1 | /* |
2 | * Copyright (c) 1999-2018 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* |
29 | * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce |
30 | * support for mandatory and extensible security protections. This notice |
31 | * is included in support of clause 2.2 (b) of the Apple Public License, |
32 | * Version 2.0. |
33 | */ |
34 | #include <stddef.h> |
35 | |
36 | #include <sys/param.h> |
37 | #include <sys/systm.h> |
38 | #include <sys/kernel.h> |
39 | #include <sys/malloc.h> |
40 | #include <sys/mbuf.h> |
41 | #include <sys/socket.h> |
42 | #include <sys/domain.h> |
43 | #include <sys/user.h> |
44 | #include <sys/random.h> |
45 | #include <sys/socketvar.h> |
46 | #include <net/if_dl.h> |
47 | #include <net/if.h> |
48 | #include <net/route.h> |
49 | #include <net/if_var.h> |
50 | #include <net/dlil.h> |
51 | #include <net/if_arp.h> |
52 | #include <net/iptap.h> |
53 | #include <net/pktap.h> |
54 | #include <sys/kern_event.h> |
55 | #include <sys/kdebug.h> |
56 | #include <sys/mcache.h> |
57 | #include <sys/syslog.h> |
58 | #include <sys/protosw.h> |
59 | #include <sys/priv.h> |
60 | |
61 | #include <kern/assert.h> |
62 | #include <kern/task.h> |
63 | #include <kern/thread.h> |
64 | #include <kern/sched_prim.h> |
65 | #include <kern/locks.h> |
66 | #include <kern/zalloc.h> |
67 | |
68 | #include <net/kpi_protocol.h> |
69 | #include <net/if_types.h> |
70 | #include <net/if_ipsec.h> |
71 | #include <net/if_llreach.h> |
72 | #include <net/if_utun.h> |
73 | #include <net/kpi_interfacefilter.h> |
74 | #include <net/classq/classq.h> |
75 | #include <net/classq/classq_sfb.h> |
76 | #include <net/flowhash.h> |
77 | #include <net/ntstat.h> |
78 | #include <net/if_llatbl.h> |
79 | #include <net/net_api_stats.h> |
80 | #include <net/if_ports_used.h> |
81 | #include <netinet/in.h> |
82 | #if INET |
83 | #include <netinet/in_var.h> |
84 | #include <netinet/igmp_var.h> |
85 | #include <netinet/ip_var.h> |
86 | #include <netinet/tcp.h> |
87 | #include <netinet/tcp_var.h> |
88 | #include <netinet/udp.h> |
89 | #include <netinet/udp_var.h> |
90 | #include <netinet/if_ether.h> |
91 | #include <netinet/in_pcb.h> |
92 | #include <netinet/in_tclass.h> |
93 | #include <netinet/ip.h> |
94 | #include <netinet/ip_icmp.h> |
95 | #include <netinet/icmp_var.h> |
96 | #endif /* INET */ |
97 | |
98 | #if INET6 |
99 | #include <net/nat464_utils.h> |
100 | #include <netinet6/in6_var.h> |
101 | #include <netinet6/nd6.h> |
102 | #include <netinet6/mld6_var.h> |
103 | #include <netinet6/scope6_var.h> |
104 | #include <netinet/ip6.h> |
105 | #include <netinet/icmp6.h> |
106 | #endif /* INET6 */ |
107 | #include <net/pf_pbuf.h> |
108 | #include <libkern/OSAtomic.h> |
109 | #include <libkern/tree.h> |
110 | |
111 | #include <dev/random/randomdev.h> |
112 | #include <machine/machine_routines.h> |
113 | |
114 | #include <mach/thread_act.h> |
115 | #include <mach/sdt.h> |
116 | |
117 | #if CONFIG_MACF |
118 | #include <sys/kauth.h> |
119 | #include <security/mac_framework.h> |
120 | #include <net/ethernet.h> |
121 | #include <net/firewire.h> |
122 | #endif |
123 | |
124 | #if PF |
125 | #include <net/pfvar.h> |
126 | #endif /* PF */ |
127 | #include <net/pktsched/pktsched.h> |
128 | |
129 | #if NECP |
130 | #include <net/necp.h> |
131 | #endif /* NECP */ |
132 | |
133 | |
134 | #define DBG_LAYER_BEG DLILDBG_CODE(DBG_DLIL_STATIC, 0) |
135 | #define DBG_LAYER_END DLILDBG_CODE(DBG_DLIL_STATIC, 2) |
136 | #define DBG_FNC_DLIL_INPUT DLILDBG_CODE(DBG_DLIL_STATIC, (1 << 8)) |
137 | #define DBG_FNC_DLIL_OUTPUT DLILDBG_CODE(DBG_DLIL_STATIC, (2 << 8)) |
138 | #define DBG_FNC_DLIL_IFOUT DLILDBG_CODE(DBG_DLIL_STATIC, (3 << 8)) |
139 | |
140 | #define MAX_FRAME_TYPE_SIZE 4 /* LONGWORDS */ |
141 | #define MAX_LINKADDR 4 /* LONGWORDS */ |
142 | #define M_NKE M_IFADDR |
143 | |
144 | #if 1 |
145 | #define DLIL_PRINTF printf |
146 | #else |
147 | #define DLIL_PRINTF kprintf |
148 | #endif |
149 | |
150 | #define IF_DATA_REQUIRE_ALIGNED_64(f) \ |
151 | _CASSERT(!(offsetof(struct if_data_internal, f) % sizeof (u_int64_t))) |
152 | |
153 | #define IFNET_IF_DATA_REQUIRE_ALIGNED_64(f) \ |
154 | _CASSERT(!(offsetof(struct ifnet, if_data.f) % sizeof (u_int64_t))) |
155 | |
156 | enum { |
157 | kProtoKPI_v1 = 1, |
158 | kProtoKPI_v2 = 2 |
159 | }; |
160 | |
161 | /* |
162 | * List of if_proto structures in if_proto_hash[] is protected by |
163 | * the ifnet lock. The rest of the fields are initialized at protocol |
164 | * attach time and never change, thus no lock required as long as |
165 | * a reference to it is valid, via if_proto_ref(). |
166 | */ |
167 | struct if_proto { |
168 | SLIST_ENTRY(if_proto) next_hash; |
169 | u_int32_t refcount; |
170 | u_int32_t detached; |
171 | struct ifnet *ifp; |
172 | protocol_family_t protocol_family; |
173 | int proto_kpi; |
174 | union { |
175 | struct { |
176 | proto_media_input input; |
177 | proto_media_preout pre_output; |
178 | proto_media_event event; |
179 | proto_media_ioctl ioctl; |
180 | proto_media_detached detached; |
181 | proto_media_resolve_multi resolve_multi; |
182 | proto_media_send_arp send_arp; |
183 | } v1; |
184 | struct { |
185 | proto_media_input_v2 input; |
186 | proto_media_preout pre_output; |
187 | proto_media_event event; |
188 | proto_media_ioctl ioctl; |
189 | proto_media_detached detached; |
190 | proto_media_resolve_multi resolve_multi; |
191 | proto_media_send_arp send_arp; |
192 | } v2; |
193 | } kpi; |
194 | }; |
195 | |
196 | SLIST_HEAD(proto_hash_entry, if_proto); |
197 | |
198 | #define DLIL_SDLDATALEN \ |
199 | (DLIL_SDLMAXLEN - offsetof(struct sockaddr_dl, sdl_data[0])) |
200 | |
201 | struct dlil_ifnet { |
202 | struct ifnet dl_if; /* public ifnet */ |
203 | /* |
204 | * DLIL private fields, protected by dl_if_lock |
205 | */ |
206 | decl_lck_mtx_data(, dl_if_lock); |
207 | TAILQ_ENTRY(dlil_ifnet) dl_if_link; /* dlil_ifnet link */ |
208 | u_int32_t dl_if_flags; /* flags (below) */ |
209 | u_int32_t dl_if_refcnt; /* refcnt */ |
210 | void (*dl_if_trace)(struct dlil_ifnet *, int); /* ref trace callback */ |
211 | void *dl_if_uniqueid; /* unique interface id */ |
212 | size_t dl_if_uniqueid_len; /* length of the unique id */ |
213 | char dl_if_namestorage[IFNAMSIZ]; /* interface name storage */ |
214 | char dl_if_xnamestorage[IFXNAMSIZ]; /* external name storage */ |
215 | struct { |
216 | struct ifaddr ifa; /* lladdr ifa */ |
217 | u_int8_t asdl[DLIL_SDLMAXLEN]; /* addr storage */ |
218 | u_int8_t msdl[DLIL_SDLMAXLEN]; /* mask storage */ |
219 | } dl_if_lladdr; |
220 | u_int8_t dl_if_descstorage[IF_DESCSIZE]; /* desc storage */ |
221 | struct dlil_threading_info dl_if_inpstorage; /* input thread storage */ |
222 | ctrace_t dl_if_attach; /* attach PC stacktrace */ |
223 | ctrace_t dl_if_detach; /* detach PC stacktrace */ |
224 | }; |
225 | |
226 | /* Values for dl_if_flags (private to DLIL) */ |
227 | #define DLIF_INUSE 0x1 /* DLIL ifnet recycler, ifnet in use */ |
228 | #define DLIF_REUSE 0x2 /* DLIL ifnet recycles, ifnet is not new */ |
229 | #define DLIF_DEBUG 0x4 /* has debugging info */ |
230 | |
231 | #define IF_REF_TRACE_HIST_SIZE 8 /* size of ref trace history */ |
232 | |
233 | /* For gdb */ |
234 | __private_extern__ unsigned int if_ref_trace_hist_size = IF_REF_TRACE_HIST_SIZE; |
235 | |
236 | struct dlil_ifnet_dbg { |
237 | struct dlil_ifnet dldbg_dlif; /* dlil_ifnet */ |
238 | u_int16_t dldbg_if_refhold_cnt; /* # ifnet references */ |
239 | u_int16_t dldbg_if_refrele_cnt; /* # ifnet releases */ |
240 | /* |
241 | * Circular lists of ifnet_{reference,release} callers. |
242 | */ |
243 | ctrace_t dldbg_if_refhold[IF_REF_TRACE_HIST_SIZE]; |
244 | ctrace_t dldbg_if_refrele[IF_REF_TRACE_HIST_SIZE]; |
245 | }; |
246 | |
247 | #define DLIL_TO_IFP(s) (&s->dl_if) |
248 | #define IFP_TO_DLIL(s) ((struct dlil_ifnet *)s) |
249 | |
250 | struct ifnet_filter { |
251 | TAILQ_ENTRY(ifnet_filter) filt_next; |
252 | u_int32_t filt_skip; |
253 | u_int32_t filt_flags; |
254 | ifnet_t filt_ifp; |
255 | const char *filt_name; |
256 | void *filt_cookie; |
257 | protocol_family_t filt_protocol; |
258 | iff_input_func filt_input; |
259 | iff_output_func filt_output; |
260 | iff_event_func filt_event; |
261 | iff_ioctl_func filt_ioctl; |
262 | iff_detached_func filt_detached; |
263 | }; |
264 | |
265 | struct proto_input_entry; |
266 | |
267 | static TAILQ_HEAD(, dlil_ifnet) dlil_ifnet_head; |
268 | static lck_grp_t *dlil_lock_group; |
269 | lck_grp_t *ifnet_lock_group; |
270 | static lck_grp_t *ifnet_head_lock_group; |
271 | static lck_grp_t *ifnet_snd_lock_group; |
272 | static lck_grp_t *ifnet_rcv_lock_group; |
273 | lck_attr_t *ifnet_lock_attr; |
274 | decl_lck_rw_data(static, ifnet_head_lock); |
275 | decl_lck_mtx_data(static, dlil_ifnet_lock); |
276 | u_int32_t dlil_filter_disable_tso_count = 0; |
277 | |
278 | #if DEBUG |
279 | static unsigned int ifnet_debug = 1; /* debugging (enabled) */ |
280 | #else |
281 | static unsigned int ifnet_debug; /* debugging (disabled) */ |
282 | #endif /* !DEBUG */ |
283 | static unsigned int dlif_size; /* size of dlil_ifnet to allocate */ |
284 | static unsigned int dlif_bufsize; /* size of dlif_size + headroom */ |
285 | static struct zone *dlif_zone; /* zone for dlil_ifnet */ |
286 | |
287 | #define DLIF_ZONE_MAX IFNETS_MAX /* maximum elements in zone */ |
288 | #define DLIF_ZONE_NAME "ifnet" /* zone name */ |
289 | |
290 | static unsigned int dlif_filt_size; /* size of ifnet_filter */ |
291 | static struct zone *dlif_filt_zone; /* zone for ifnet_filter */ |
292 | |
293 | #define DLIF_FILT_ZONE_MAX 8 /* maximum elements in zone */ |
294 | #define DLIF_FILT_ZONE_NAME "ifnet_filter" /* zone name */ |
295 | |
296 | static unsigned int dlif_phash_size; /* size of ifnet proto hash table */ |
297 | static struct zone *dlif_phash_zone; /* zone for ifnet proto hash table */ |
298 | |
299 | #define DLIF_PHASH_ZONE_MAX DLIF_ZONE_MAX /* maximum elements in zone */ |
300 | #define DLIF_PHASH_ZONE_NAME "ifnet_proto_hash" /* zone name */ |
301 | |
302 | static unsigned int dlif_proto_size; /* size of if_proto */ |
303 | static struct zone *dlif_proto_zone; /* zone for if_proto */ |
304 | |
305 | #define DLIF_PROTO_ZONE_MAX (DLIF_ZONE_MAX*2) /* maximum elements in zone */ |
306 | #define DLIF_PROTO_ZONE_NAME "ifnet_proto" /* zone name */ |
307 | |
308 | static unsigned int dlif_tcpstat_size; /* size of tcpstat_local to allocate */ |
309 | static unsigned int dlif_tcpstat_bufsize; /* size of dlif_tcpstat_size + headroom */ |
310 | static struct zone *dlif_tcpstat_zone; /* zone for tcpstat_local */ |
311 | |
312 | #define DLIF_TCPSTAT_ZONE_MAX 1 /* maximum elements in zone */ |
313 | #define DLIF_TCPSTAT_ZONE_NAME "ifnet_tcpstat" /* zone name */ |
314 | |
315 | static unsigned int dlif_udpstat_size; /* size of udpstat_local to allocate */ |
316 | static unsigned int dlif_udpstat_bufsize; /* size of dlif_udpstat_size + headroom */ |
317 | static struct zone *dlif_udpstat_zone; /* zone for udpstat_local */ |
318 | |
319 | #define DLIF_UDPSTAT_ZONE_MAX 1 /* maximum elements in zone */ |
320 | #define DLIF_UDPSTAT_ZONE_NAME "ifnet_udpstat" /* zone name */ |
321 | |
322 | static u_int32_t net_rtref; |
323 | |
324 | static struct dlil_main_threading_info dlil_main_input_thread_info; |
325 | __private_extern__ struct dlil_threading_info *dlil_main_input_thread = |
326 | (struct dlil_threading_info *)&dlil_main_input_thread_info; |
327 | |
328 | static int dlil_event_internal(struct ifnet *ifp, struct kev_msg *msg, bool update_generation); |
329 | static int dlil_detach_filter_internal(interface_filter_t filter, int detached); |
330 | static void dlil_if_trace(struct dlil_ifnet *, int); |
331 | static void if_proto_ref(struct if_proto *); |
332 | static void if_proto_free(struct if_proto *); |
333 | static struct if_proto *find_attached_proto(struct ifnet *, u_int32_t); |
334 | static u_int32_t dlil_ifp_protolist(struct ifnet *ifp, protocol_family_t *list, |
335 | u_int32_t list_count); |
336 | static void if_flt_monitor_busy(struct ifnet *); |
337 | static void if_flt_monitor_unbusy(struct ifnet *); |
338 | static void if_flt_monitor_enter(struct ifnet *); |
339 | static void if_flt_monitor_leave(struct ifnet *); |
340 | static int dlil_interface_filters_input(struct ifnet *, struct mbuf **, |
341 | char **, protocol_family_t); |
342 | static int dlil_interface_filters_output(struct ifnet *, struct mbuf **, |
343 | protocol_family_t); |
344 | static struct ifaddr *dlil_alloc_lladdr(struct ifnet *, |
345 | const struct sockaddr_dl *); |
346 | static int ifnet_lookup(struct ifnet *); |
347 | static void if_purgeaddrs(struct ifnet *); |
348 | |
349 | static errno_t ifproto_media_input_v1(struct ifnet *, protocol_family_t, |
350 | struct mbuf *, char *); |
351 | static errno_t ifproto_media_input_v2(struct ifnet *, protocol_family_t, |
352 | struct mbuf *); |
353 | static errno_t ifproto_media_preout(struct ifnet *, protocol_family_t, |
354 | mbuf_t *, const struct sockaddr *, void *, char *, char *); |
355 | static void ifproto_media_event(struct ifnet *, protocol_family_t, |
356 | const struct kev_msg *); |
357 | static errno_t ifproto_media_ioctl(struct ifnet *, protocol_family_t, |
358 | unsigned long, void *); |
359 | static errno_t ifproto_media_resolve_multi(ifnet_t, const struct sockaddr *, |
360 | struct sockaddr_dl *, size_t); |
361 | static errno_t ifproto_media_send_arp(struct ifnet *, u_short, |
362 | const struct sockaddr_dl *, const struct sockaddr *, |
363 | const struct sockaddr_dl *, const struct sockaddr *); |
364 | |
365 | static errno_t ifp_if_input(struct ifnet *ifp, struct mbuf *m_head, |
366 | struct mbuf *m_tail, const struct ifnet_stat_increment_param *s, |
367 | boolean_t poll, struct thread *tp); |
368 | static void ifp_if_input_poll(struct ifnet *, u_int32_t, u_int32_t, |
369 | struct mbuf **, struct mbuf **, u_int32_t *, u_int32_t *); |
370 | static errno_t ifp_if_ctl(struct ifnet *, ifnet_ctl_cmd_t, u_int32_t, void *); |
371 | static errno_t ifp_if_demux(struct ifnet *, struct mbuf *, char *, |
372 | protocol_family_t *); |
373 | static errno_t ifp_if_add_proto(struct ifnet *, protocol_family_t, |
374 | const struct ifnet_demux_desc *, u_int32_t); |
375 | static errno_t ifp_if_del_proto(struct ifnet *, protocol_family_t); |
376 | static errno_t ifp_if_check_multi(struct ifnet *, const struct sockaddr *); |
377 | #if CONFIG_EMBEDDED |
378 | static errno_t ifp_if_framer(struct ifnet *, struct mbuf **, |
379 | const struct sockaddr *, const char *, const char *, |
380 | u_int32_t *, u_int32_t *); |
381 | #else |
382 | static errno_t ifp_if_framer(struct ifnet *, struct mbuf **, |
383 | const struct sockaddr *, const char *, const char *); |
384 | #endif /* CONFIG_EMBEDDED */ |
385 | static errno_t ifp_if_framer_extended(struct ifnet *, struct mbuf **, |
386 | const struct sockaddr *, const char *, const char *, |
387 | u_int32_t *, u_int32_t *); |
388 | static errno_t ifp_if_set_bpf_tap(struct ifnet *, bpf_tap_mode, bpf_packet_func); |
389 | static void ifp_if_free(struct ifnet *); |
390 | static void ifp_if_event(struct ifnet *, const struct kev_msg *); |
391 | static __inline void ifp_inc_traffic_class_in(struct ifnet *, struct mbuf *); |
392 | static __inline void ifp_inc_traffic_class_out(struct ifnet *, struct mbuf *); |
393 | |
394 | static void dlil_main_input_thread_func(void *, wait_result_t); |
395 | static void dlil_input_thread_func(void *, wait_result_t); |
396 | static void dlil_rxpoll_input_thread_func(void *, wait_result_t); |
397 | static int dlil_create_input_thread(ifnet_t, struct dlil_threading_info *); |
398 | static void dlil_terminate_input_thread(struct dlil_threading_info *); |
399 | static void dlil_input_stats_add(const struct ifnet_stat_increment_param *, |
400 | struct dlil_threading_info *, boolean_t); |
401 | static void dlil_input_stats_sync(struct ifnet *, struct dlil_threading_info *); |
402 | static void dlil_input_packet_list_common(struct ifnet *, struct mbuf *, |
403 | u_int32_t, ifnet_model_t, boolean_t); |
404 | static errno_t ifnet_input_common(struct ifnet *, struct mbuf *, struct mbuf *, |
405 | const struct ifnet_stat_increment_param *, boolean_t, boolean_t); |
406 | static int dlil_is_clat_needed(protocol_family_t , mbuf_t ); |
407 | static errno_t dlil_clat46(ifnet_t, protocol_family_t *, mbuf_t *); |
408 | static errno_t dlil_clat64(ifnet_t, protocol_family_t *, mbuf_t *); |
409 | #if DEBUG || DEVELOPMENT |
410 | static void dlil_verify_sum16(void); |
411 | #endif /* DEBUG || DEVELOPMENT */ |
412 | static void dlil_output_cksum_dbg(struct ifnet *, struct mbuf *, uint32_t, |
413 | protocol_family_t); |
414 | static void dlil_input_cksum_dbg(struct ifnet *, struct mbuf *, char *, |
415 | protocol_family_t); |
416 | |
417 | static void ifnet_detacher_thread_func(void *, wait_result_t); |
418 | static int ifnet_detacher_thread_cont(int); |
419 | static void ifnet_detach_final(struct ifnet *); |
420 | static void ifnet_detaching_enqueue(struct ifnet *); |
421 | static struct ifnet *ifnet_detaching_dequeue(void); |
422 | |
423 | static void ifnet_start_thread_fn(void *, wait_result_t); |
424 | static void ifnet_poll_thread_fn(void *, wait_result_t); |
425 | static void ifnet_poll(struct ifnet *); |
426 | static errno_t ifnet_enqueue_common(struct ifnet *, void *, |
427 | classq_pkt_type_t, boolean_t, boolean_t *); |
428 | |
429 | static void ifp_src_route_copyout(struct ifnet *, struct route *); |
430 | static void ifp_src_route_copyin(struct ifnet *, struct route *); |
431 | #if INET6 |
432 | static void ifp_src_route6_copyout(struct ifnet *, struct route_in6 *); |
433 | static void ifp_src_route6_copyin(struct ifnet *, struct route_in6 *); |
434 | #endif /* INET6 */ |
435 | |
436 | static int sysctl_rxpoll SYSCTL_HANDLER_ARGS; |
437 | static int sysctl_rxpoll_mode_holdtime SYSCTL_HANDLER_ARGS; |
438 | static int sysctl_rxpoll_sample_holdtime SYSCTL_HANDLER_ARGS; |
439 | static int sysctl_rxpoll_interval_time SYSCTL_HANDLER_ARGS; |
440 | static int sysctl_rxpoll_wlowat SYSCTL_HANDLER_ARGS; |
441 | static int sysctl_rxpoll_whiwat SYSCTL_HANDLER_ARGS; |
442 | static int sysctl_sndq_maxlen SYSCTL_HANDLER_ARGS; |
443 | static int sysctl_rcvq_maxlen SYSCTL_HANDLER_ARGS; |
444 | static int sysctl_hwcksum_dbg_mode SYSCTL_HANDLER_ARGS; |
445 | static int sysctl_hwcksum_dbg_partial_rxoff_forced SYSCTL_HANDLER_ARGS; |
446 | static int sysctl_hwcksum_dbg_partial_rxoff_adj SYSCTL_HANDLER_ARGS; |
447 | |
448 | struct chain_len_stats tx_chain_len_stats; |
449 | static int sysctl_tx_chain_len_stats SYSCTL_HANDLER_ARGS; |
450 | |
451 | #if TEST_INPUT_THREAD_TERMINATION |
452 | static int sysctl_input_thread_termination_spin SYSCTL_HANDLER_ARGS; |
453 | #endif /* TEST_INPUT_THREAD_TERMINATION */ |
454 | |
455 | /* The following are protected by dlil_ifnet_lock */ |
456 | static TAILQ_HEAD(, ifnet) ifnet_detaching_head; |
457 | static u_int32_t ifnet_detaching_cnt; |
458 | static void *ifnet_delayed_run; /* wait channel for detaching thread */ |
459 | |
460 | decl_lck_mtx_data(static, ifnet_fc_lock); |
461 | |
462 | static uint32_t ifnet_flowhash_seed; |
463 | |
464 | struct ifnet_flowhash_key { |
465 | char ifk_name[IFNAMSIZ]; |
466 | uint32_t ifk_unit; |
467 | uint32_t ifk_flags; |
468 | uint32_t ifk_eflags; |
469 | uint32_t ifk_capabilities; |
470 | uint32_t ifk_capenable; |
471 | uint32_t ifk_output_sched_model; |
472 | uint32_t ifk_rand1; |
473 | uint32_t ifk_rand2; |
474 | }; |
475 | |
476 | /* Flow control entry per interface */ |
477 | struct ifnet_fc_entry { |
478 | RB_ENTRY(ifnet_fc_entry) ifce_entry; |
479 | u_int32_t ifce_flowhash; |
480 | struct ifnet *ifce_ifp; |
481 | }; |
482 | |
483 | static uint32_t ifnet_calc_flowhash(struct ifnet *); |
484 | static int ifce_cmp(const struct ifnet_fc_entry *, |
485 | const struct ifnet_fc_entry *); |
486 | static int ifnet_fc_add(struct ifnet *); |
487 | static struct ifnet_fc_entry *ifnet_fc_get(u_int32_t); |
488 | static void ifnet_fc_entry_free(struct ifnet_fc_entry *); |
489 | |
490 | /* protected by ifnet_fc_lock */ |
491 | RB_HEAD(ifnet_fc_tree, ifnet_fc_entry) ifnet_fc_tree; |
492 | RB_PROTOTYPE(ifnet_fc_tree, ifnet_fc_entry, ifce_entry, ifce_cmp); |
493 | RB_GENERATE(ifnet_fc_tree, ifnet_fc_entry, ifce_entry, ifce_cmp); |
494 | |
495 | static unsigned int ifnet_fc_zone_size; /* sizeof ifnet_fc_entry */ |
496 | static struct zone *ifnet_fc_zone; /* ifnet_fc_entry zone */ |
497 | |
498 | #define IFNET_FC_ZONE_NAME "ifnet_fc_zone" |
499 | #define IFNET_FC_ZONE_MAX 32 |
500 | |
501 | extern void bpfdetach(struct ifnet *); |
502 | extern void proto_input_run(void); |
503 | |
504 | extern uint32_t udp_count_opportunistic(unsigned int ifindex, |
505 | u_int32_t flags); |
506 | extern uint32_t tcp_count_opportunistic(unsigned int ifindex, |
507 | u_int32_t flags); |
508 | |
509 | __private_extern__ void link_rtrequest(int, struct rtentry *, struct sockaddr *); |
510 | |
511 | #if CONFIG_MACF |
512 | #ifdef CONFIG_EMBEDDED |
513 | int dlil_lladdr_ckreq = 1; |
514 | #else |
515 | int dlil_lladdr_ckreq = 0; |
516 | #endif |
517 | #endif |
518 | |
519 | #if DEBUG |
520 | int dlil_verbose = 1; |
521 | #else |
522 | int dlil_verbose = 0; |
523 | #endif /* DEBUG */ |
524 | #if IFNET_INPUT_SANITY_CHK |
525 | /* sanity checking of input packet lists received */ |
526 | static u_int32_t dlil_input_sanity_check = 0; |
527 | #endif /* IFNET_INPUT_SANITY_CHK */ |
528 | /* rate limit debug messages */ |
529 | struct timespec dlil_dbgrate = { 1, 0 }; |
530 | |
531 | SYSCTL_DECL(_net_link_generic_system); |
532 | |
533 | SYSCTL_INT(_net_link_generic_system, OID_AUTO, dlil_verbose, |
534 | CTLFLAG_RW | CTLFLAG_LOCKED, &dlil_verbose, 0, "Log DLIL error messages" ); |
535 | |
536 | #define IF_SNDQ_MINLEN 32 |
537 | u_int32_t if_sndq_maxlen = IFQ_MAXLEN; |
538 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, sndq_maxlen, |
539 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_sndq_maxlen, IFQ_MAXLEN, |
540 | sysctl_sndq_maxlen, "I" , "Default transmit queue max length" ); |
541 | |
542 | #define IF_RCVQ_MINLEN 32 |
543 | #define IF_RCVQ_MAXLEN 256 |
544 | u_int32_t if_rcvq_maxlen = IF_RCVQ_MAXLEN; |
545 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rcvq_maxlen, |
546 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rcvq_maxlen, IFQ_MAXLEN, |
547 | sysctl_rcvq_maxlen, "I" , "Default receive queue max length" ); |
548 | |
549 | #define IF_RXPOLL_DECAY 2 /* ilog2 of EWMA decay rate (4) */ |
550 | static u_int32_t if_rxpoll_decay = IF_RXPOLL_DECAY; |
551 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, rxpoll_decay, |
552 | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_decay, IF_RXPOLL_DECAY, |
553 | "ilog2 of EWMA decay rate of avg inbound packets" ); |
554 | |
555 | #define IF_RXPOLL_MODE_HOLDTIME_MIN (10ULL * 1000 * 1000) /* 10 ms */ |
556 | #define IF_RXPOLL_MODE_HOLDTIME (1000ULL * 1000 * 1000) /* 1 sec */ |
557 | static u_int64_t if_rxpoll_mode_holdtime = IF_RXPOLL_MODE_HOLDTIME; |
558 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_freeze_time, |
559 | CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_mode_holdtime, |
560 | IF_RXPOLL_MODE_HOLDTIME, sysctl_rxpoll_mode_holdtime, |
561 | "Q" , "input poll mode freeze time" ); |
562 | |
563 | #define IF_RXPOLL_SAMPLETIME_MIN (1ULL * 1000 * 1000) /* 1 ms */ |
564 | #define IF_RXPOLL_SAMPLETIME (10ULL * 1000 * 1000) /* 10 ms */ |
565 | static u_int64_t if_rxpoll_sample_holdtime = IF_RXPOLL_SAMPLETIME; |
566 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_sample_time, |
567 | CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_sample_holdtime, |
568 | IF_RXPOLL_SAMPLETIME, sysctl_rxpoll_sample_holdtime, |
569 | "Q" , "input poll sampling time" ); |
570 | |
571 | #define IF_RXPOLL_INTERVALTIME_MIN (1ULL * 1000) /* 1 us */ |
572 | #define IF_RXPOLL_INTERVALTIME (1ULL * 1000 * 1000) /* 1 ms */ |
573 | static u_int64_t if_rxpoll_interval_time = IF_RXPOLL_INTERVALTIME; |
574 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_interval_time, |
575 | CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_interval_time, |
576 | IF_RXPOLL_INTERVALTIME, sysctl_rxpoll_interval_time, |
577 | "Q" , "input poll interval (time)" ); |
578 | |
579 | #define IF_RXPOLL_INTERVAL_PKTS 0 /* 0 (disabled) */ |
580 | static u_int32_t if_rxpoll_interval_pkts = IF_RXPOLL_INTERVAL_PKTS; |
581 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, rxpoll_interval_pkts, |
582 | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_interval_pkts, |
583 | IF_RXPOLL_INTERVAL_PKTS, "input poll interval (packets)" ); |
584 | |
585 | #define IF_RXPOLL_WLOWAT 10 |
586 | static u_int32_t if_rxpoll_wlowat = IF_RXPOLL_WLOWAT; |
587 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_wakeups_lowat, |
588 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_wlowat, |
589 | IF_RXPOLL_WLOWAT, sysctl_rxpoll_wlowat, |
590 | "I" , "input poll wakeup low watermark" ); |
591 | |
592 | #define IF_RXPOLL_WHIWAT 100 |
593 | static u_int32_t if_rxpoll_whiwat = IF_RXPOLL_WHIWAT; |
594 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_wakeups_hiwat, |
595 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_whiwat, |
596 | IF_RXPOLL_WHIWAT, sysctl_rxpoll_whiwat, |
597 | "I" , "input poll wakeup high watermark" ); |
598 | |
599 | static u_int32_t if_rxpoll_max = 0; /* 0 (automatic) */ |
600 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, rxpoll_max, |
601 | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_max, 0, |
602 | "max packets per poll call" ); |
603 | |
604 | static u_int32_t if_rxpoll = 1; |
605 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll, |
606 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll, 0, |
607 | sysctl_rxpoll, "I" , "enable opportunistic input polling" ); |
608 | |
609 | #if TEST_INPUT_THREAD_TERMINATION |
610 | static u_int32_t if_input_thread_termination_spin = 0; |
611 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, input_thread_termination_spin, |
612 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, |
613 | &if_input_thread_termination_spin, 0, |
614 | sysctl_input_thread_termination_spin, |
615 | "I" , "input thread termination spin limit" ); |
616 | #endif /* TEST_INPUT_THREAD_TERMINATION */ |
617 | |
618 | static u_int32_t cur_dlil_input_threads = 0; |
619 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, dlil_input_threads, |
620 | CTLFLAG_RD | CTLFLAG_LOCKED, &cur_dlil_input_threads, 0, |
621 | "Current number of DLIL input threads" ); |
622 | |
623 | #if IFNET_INPUT_SANITY_CHK |
624 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, dlil_input_sanity_check, |
625 | CTLFLAG_RW | CTLFLAG_LOCKED, &dlil_input_sanity_check, 0, |
626 | "Turn on sanity checking in DLIL input" ); |
627 | #endif /* IFNET_INPUT_SANITY_CHK */ |
628 | |
629 | static u_int32_t if_flowadv = 1; |
630 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, flow_advisory, |
631 | CTLFLAG_RW | CTLFLAG_LOCKED, &if_flowadv, 1, |
632 | "enable flow-advisory mechanism" ); |
633 | |
634 | static u_int32_t if_delaybased_queue = 1; |
635 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, delaybased_queue, |
636 | CTLFLAG_RW | CTLFLAG_LOCKED, &if_delaybased_queue, 1, |
637 | "enable delay based dynamic queue sizing" ); |
638 | |
639 | static uint64_t hwcksum_in_invalidated = 0; |
640 | SYSCTL_QUAD(_net_link_generic_system, OID_AUTO, |
641 | hwcksum_in_invalidated, CTLFLAG_RD | CTLFLAG_LOCKED, |
642 | &hwcksum_in_invalidated, "inbound packets with invalidated hardware cksum" ); |
643 | |
644 | uint32_t hwcksum_dbg = 0; |
645 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, hwcksum_dbg, |
646 | CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_dbg, 0, |
647 | "enable hardware cksum debugging" ); |
648 | |
649 | u_int32_t ifnet_start_delayed = 0; |
650 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, start_delayed, |
651 | CTLFLAG_RW | CTLFLAG_LOCKED, &ifnet_start_delayed, 0, |
652 | "number of times start was delayed" ); |
653 | |
654 | u_int32_t ifnet_delay_start_disabled = 0; |
655 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, start_delay_disabled, |
656 | CTLFLAG_RW | CTLFLAG_LOCKED, &ifnet_delay_start_disabled, 0, |
657 | "number of times start was delayed" ); |
658 | |
659 | #define HWCKSUM_DBG_PARTIAL_FORCED 0x1 /* forced partial checksum */ |
660 | #define HWCKSUM_DBG_PARTIAL_RXOFF_ADJ 0x2 /* adjust start offset */ |
661 | #define HWCKSUM_DBG_FINALIZE_FORCED 0x10 /* forced finalize */ |
662 | #define HWCKSUM_DBG_MASK \ |
663 | (HWCKSUM_DBG_PARTIAL_FORCED | HWCKSUM_DBG_PARTIAL_RXOFF_ADJ | \ |
664 | HWCKSUM_DBG_FINALIZE_FORCED) |
665 | |
666 | static uint32_t hwcksum_dbg_mode = 0; |
667 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, hwcksum_dbg_mode, |
668 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_dbg_mode, |
669 | 0, sysctl_hwcksum_dbg_mode, "I" , "hardware cksum debugging mode" ); |
670 | |
671 | static uint64_t hwcksum_dbg_partial_forced = 0; |
672 | SYSCTL_QUAD(_net_link_generic_system, OID_AUTO, |
673 | hwcksum_dbg_partial_forced, CTLFLAG_RD | CTLFLAG_LOCKED, |
674 | &hwcksum_dbg_partial_forced, "packets forced using partial cksum" ); |
675 | |
676 | static uint64_t hwcksum_dbg_partial_forced_bytes = 0; |
677 | SYSCTL_QUAD(_net_link_generic_system, OID_AUTO, |
678 | hwcksum_dbg_partial_forced_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, |
679 | &hwcksum_dbg_partial_forced_bytes, "bytes forced using partial cksum" ); |
680 | |
681 | static uint32_t hwcksum_dbg_partial_rxoff_forced = 0; |
682 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, |
683 | hwcksum_dbg_partial_rxoff_forced, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, |
684 | &hwcksum_dbg_partial_rxoff_forced, 0, |
685 | sysctl_hwcksum_dbg_partial_rxoff_forced, "I" , |
686 | "forced partial cksum rx offset" ); |
687 | |
688 | static uint32_t hwcksum_dbg_partial_rxoff_adj = 0; |
689 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, hwcksum_dbg_partial_rxoff_adj, |
690 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_dbg_partial_rxoff_adj, |
691 | 0, sysctl_hwcksum_dbg_partial_rxoff_adj, "I" , |
692 | "adjusted partial cksum rx offset" ); |
693 | |
694 | static uint64_t hwcksum_dbg_verified = 0; |
695 | SYSCTL_QUAD(_net_link_generic_system, OID_AUTO, |
696 | hwcksum_dbg_verified, CTLFLAG_RD | CTLFLAG_LOCKED, |
697 | &hwcksum_dbg_verified, "packets verified for having good checksum" ); |
698 | |
699 | static uint64_t hwcksum_dbg_bad_cksum = 0; |
700 | SYSCTL_QUAD(_net_link_generic_system, OID_AUTO, |
701 | hwcksum_dbg_bad_cksum, CTLFLAG_RD | CTLFLAG_LOCKED, |
702 | &hwcksum_dbg_bad_cksum, "packets with bad hardware calculated checksum" ); |
703 | |
704 | static uint64_t hwcksum_dbg_bad_rxoff = 0; |
705 | SYSCTL_QUAD(_net_link_generic_system, OID_AUTO, |
706 | hwcksum_dbg_bad_rxoff, CTLFLAG_RD | CTLFLAG_LOCKED, |
707 | &hwcksum_dbg_bad_rxoff, "packets with invalid rxoff" ); |
708 | |
709 | static uint64_t hwcksum_dbg_adjusted = 0; |
710 | SYSCTL_QUAD(_net_link_generic_system, OID_AUTO, |
711 | hwcksum_dbg_adjusted, CTLFLAG_RD | CTLFLAG_LOCKED, |
712 | &hwcksum_dbg_adjusted, "packets with rxoff adjusted" ); |
713 | |
714 | static uint64_t hwcksum_dbg_finalized_hdr = 0; |
715 | SYSCTL_QUAD(_net_link_generic_system, OID_AUTO, |
716 | hwcksum_dbg_finalized_hdr, CTLFLAG_RD | CTLFLAG_LOCKED, |
717 | &hwcksum_dbg_finalized_hdr, "finalized headers" ); |
718 | |
719 | static uint64_t hwcksum_dbg_finalized_data = 0; |
720 | SYSCTL_QUAD(_net_link_generic_system, OID_AUTO, |
721 | hwcksum_dbg_finalized_data, CTLFLAG_RD | CTLFLAG_LOCKED, |
722 | &hwcksum_dbg_finalized_data, "finalized payloads" ); |
723 | |
724 | uint32_t hwcksum_tx = 1; |
725 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, hwcksum_tx, |
726 | CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_tx, 0, |
727 | "enable transmit hardware checksum offload" ); |
728 | |
729 | uint32_t hwcksum_rx = 1; |
730 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, hwcksum_rx, |
731 | CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_rx, 0, |
732 | "enable receive hardware checksum offload" ); |
733 | |
734 | SYSCTL_PROC(_net_link_generic_system, OID_AUTO, tx_chain_len_stats, |
735 | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 9, |
736 | sysctl_tx_chain_len_stats, "S" , "" ); |
737 | |
738 | uint32_t tx_chain_len_count = 0; |
739 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, tx_chain_len_count, |
740 | CTLFLAG_RW | CTLFLAG_LOCKED, &tx_chain_len_count, 0, "" ); |
741 | |
742 | static uint32_t threshold_notify = 1; /* enable/disable */ |
743 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, threshold_notify, |
744 | CTLFLAG_RW | CTLFLAG_LOCKED, &threshold_notify, 0, "" ); |
745 | |
746 | static uint32_t threshold_interval = 2; /* in seconds */ |
747 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, threshold_interval, |
748 | CTLFLAG_RW | CTLFLAG_LOCKED, &threshold_interval, 0, "" ); |
749 | |
750 | #if (DEVELOPMENT || DEBUG) |
751 | static int sysctl_get_kao_frames SYSCTL_HANDLER_ARGS; |
752 | SYSCTL_NODE(_net_link_generic_system, OID_AUTO, get_kao_frames, |
753 | CTLFLAG_RD | CTLFLAG_LOCKED, sysctl_get_kao_frames, "" ); |
754 | #endif /* DEVELOPMENT || DEBUG */ |
755 | |
756 | struct net_api_stats net_api_stats; |
757 | SYSCTL_STRUCT(_net, OID_AUTO, api_stats, CTLFLAG_RD|CTLFLAG_LOCKED, |
758 | &net_api_stats, net_api_stats, "" ); |
759 | |
760 | |
761 | unsigned int net_rxpoll = 1; |
762 | unsigned int net_affinity = 1; |
763 | static kern_return_t dlil_affinity_set(struct thread *, u_int32_t); |
764 | |
765 | extern u_int32_t inject_buckets; |
766 | |
767 | static lck_grp_attr_t *dlil_grp_attributes = NULL; |
768 | static lck_attr_t *dlil_lck_attributes = NULL; |
769 | |
770 | /* DLIL data threshold thread call */ |
771 | static void dlil_dt_tcall_fn(thread_call_param_t, thread_call_param_t); |
772 | |
773 | static void dlil_mit_tcall_fn(thread_call_param_t, thread_call_param_t); |
774 | |
775 | uint32_t dlil_rcv_mit_pkts_min = 5; |
776 | uint32_t dlil_rcv_mit_pkts_max = 64; |
777 | uint32_t dlil_rcv_mit_interval = (500 * 1000); |
778 | |
779 | #if (DEVELOPMENT || DEBUG) |
780 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, rcv_mit_pkts_min, |
781 | CTLFLAG_RW | CTLFLAG_LOCKED, &dlil_rcv_mit_pkts_min, 0, "" ); |
782 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, rcv_mit_pkts_max, |
783 | CTLFLAG_RW | CTLFLAG_LOCKED, &dlil_rcv_mit_pkts_max, 0, "" ); |
784 | SYSCTL_UINT(_net_link_generic_system, OID_AUTO, rcv_mit_interval, |
785 | CTLFLAG_RW | CTLFLAG_LOCKED, &dlil_rcv_mit_interval, 0, "" ); |
786 | #endif /* DEVELOPMENT || DEBUG */ |
787 | |
788 | |
789 | #define DLIL_INPUT_CHECK(m, ifp) { \ |
790 | struct ifnet *_rcvif = mbuf_pkthdr_rcvif(m); \ |
791 | if (_rcvif == NULL || (ifp != lo_ifp && _rcvif != ifp) || \ |
792 | !(mbuf_flags(m) & MBUF_PKTHDR)) { \ |
793 | panic_plain("%s: invalid mbuf %p\n", __func__, m); \ |
794 | /* NOTREACHED */ \ |
795 | } \ |
796 | } |
797 | |
798 | #define DLIL_EWMA(old, new, decay) do { \ |
799 | u_int32_t _avg; \ |
800 | if ((_avg = (old)) > 0) \ |
801 | _avg = (((_avg << (decay)) - _avg) + (new)) >> (decay); \ |
802 | else \ |
803 | _avg = (new); \ |
804 | (old) = _avg; \ |
805 | } while (0) |
806 | |
807 | #define MBPS (1ULL * 1000 * 1000) |
808 | #define GBPS (MBPS * 1000) |
809 | |
810 | struct rxpoll_time_tbl { |
811 | u_int64_t speed; /* downlink speed */ |
812 | u_int32_t plowat; /* packets low watermark */ |
813 | u_int32_t phiwat; /* packets high watermark */ |
814 | u_int32_t blowat; /* bytes low watermark */ |
815 | u_int32_t bhiwat; /* bytes high watermark */ |
816 | }; |
817 | |
818 | static struct rxpoll_time_tbl rxpoll_tbl[] = { |
819 | { 10 * MBPS, 2, 8, (1 * 1024), (6 * 1024) }, |
820 | { 100 * MBPS, 10, 40, (4 * 1024), (64 * 1024) }, |
821 | { 1 * GBPS, 10, 40, (4 * 1024), (64 * 1024) }, |
822 | { 10 * GBPS, 10, 40, (4 * 1024), (64 * 1024) }, |
823 | { 100 * GBPS, 10, 40, (4 * 1024), (64 * 1024) }, |
824 | { 0, 0, 0, 0, 0 } |
825 | }; |
826 | |
827 | int |
828 | proto_hash_value(u_int32_t protocol_family) |
829 | { |
830 | /* |
831 | * dlil_proto_unplumb_all() depends on the mapping between |
832 | * the hash bucket index and the protocol family defined |
833 | * here; future changes must be applied there as well. |
834 | */ |
835 | switch (protocol_family) { |
836 | case PF_INET: |
837 | return (0); |
838 | case PF_INET6: |
839 | return (1); |
840 | case PF_VLAN: |
841 | return (2); |
842 | case PF_UNSPEC: |
843 | default: |
844 | return (3); |
845 | } |
846 | } |
847 | |
848 | /* |
849 | * Caller must already be holding ifnet lock. |
850 | */ |
851 | static struct if_proto * |
852 | find_attached_proto(struct ifnet *ifp, u_int32_t protocol_family) |
853 | { |
854 | struct if_proto *proto = NULL; |
855 | u_int32_t i = proto_hash_value(protocol_family); |
856 | |
857 | ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_OWNED); |
858 | |
859 | if (ifp->if_proto_hash != NULL) |
860 | proto = SLIST_FIRST(&ifp->if_proto_hash[i]); |
861 | |
862 | while (proto != NULL && proto->protocol_family != protocol_family) |
863 | proto = SLIST_NEXT(proto, next_hash); |
864 | |
865 | if (proto != NULL) |
866 | if_proto_ref(proto); |
867 | |
868 | return (proto); |
869 | } |
870 | |
871 | static void |
872 | if_proto_ref(struct if_proto *proto) |
873 | { |
874 | atomic_add_32(&proto->refcount, 1); |
875 | } |
876 | |
877 | extern void if_rtproto_del(struct ifnet *ifp, int protocol); |
878 | |
879 | static void |
880 | if_proto_free(struct if_proto *proto) |
881 | { |
882 | u_int32_t oldval; |
883 | struct ifnet *ifp = proto->ifp; |
884 | u_int32_t proto_family = proto->protocol_family; |
885 | struct kev_dl_proto_data ev_pr_data; |
886 | |
887 | oldval = atomic_add_32_ov(&proto->refcount, -1); |
888 | if (oldval > 1) |
889 | return; |
890 | |
891 | /* No more reference on this, protocol must have been detached */ |
892 | VERIFY(proto->detached); |
893 | |
894 | if (proto->proto_kpi == kProtoKPI_v1) { |
895 | if (proto->kpi.v1.detached) |
896 | proto->kpi.v1.detached(ifp, proto->protocol_family); |
897 | } |
898 | if (proto->proto_kpi == kProtoKPI_v2) { |
899 | if (proto->kpi.v2.detached) |
900 | proto->kpi.v2.detached(ifp, proto->protocol_family); |
901 | } |
902 | |
903 | /* |
904 | * Cleanup routes that may still be in the routing table for that |
905 | * interface/protocol pair. |
906 | */ |
907 | if_rtproto_del(ifp, proto_family); |
908 | |
909 | /* |
910 | * The reserved field carries the number of protocol still attached |
911 | * (subject to change) |
912 | */ |
913 | ifnet_lock_shared(ifp); |
914 | ev_pr_data.proto_family = proto_family; |
915 | ev_pr_data.proto_remaining_count = dlil_ifp_protolist(ifp, NULL, 0); |
916 | ifnet_lock_done(ifp); |
917 | |
918 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_PROTO_DETACHED, |
919 | (struct net_event_data *)&ev_pr_data, |
920 | sizeof (struct kev_dl_proto_data)); |
921 | |
922 | if (ev_pr_data.proto_remaining_count == 0) { |
923 | /* |
924 | * The protocol count has gone to zero, mark the interface down. |
925 | * This used to be done by configd.KernelEventMonitor, but that |
926 | * is inherently prone to races (rdar://problem/30810208). |
927 | */ |
928 | (void) ifnet_set_flags(ifp, 0, IFF_UP); |
929 | (void) ifnet_ioctl(ifp, 0, SIOCSIFFLAGS, NULL); |
930 | dlil_post_sifflags_msg(ifp); |
931 | } |
932 | |
933 | zfree(dlif_proto_zone, proto); |
934 | } |
935 | |
936 | __private_extern__ void |
937 | ifnet_lock_assert(struct ifnet *ifp, ifnet_lock_assert_t what) |
938 | { |
939 | #if !MACH_ASSERT |
940 | #pragma unused(ifp) |
941 | #endif |
942 | unsigned int type = 0; |
943 | int ass = 1; |
944 | |
945 | switch (what) { |
946 | case IFNET_LCK_ASSERT_EXCLUSIVE: |
947 | type = LCK_RW_ASSERT_EXCLUSIVE; |
948 | break; |
949 | |
950 | case IFNET_LCK_ASSERT_SHARED: |
951 | type = LCK_RW_ASSERT_SHARED; |
952 | break; |
953 | |
954 | case IFNET_LCK_ASSERT_OWNED: |
955 | type = LCK_RW_ASSERT_HELD; |
956 | break; |
957 | |
958 | case IFNET_LCK_ASSERT_NOTOWNED: |
959 | /* nothing to do here for RW lock; bypass assert */ |
960 | ass = 0; |
961 | break; |
962 | |
963 | default: |
964 | panic("bad ifnet assert type: %d" , what); |
965 | /* NOTREACHED */ |
966 | } |
967 | if (ass) |
968 | LCK_RW_ASSERT(&ifp->if_lock, type); |
969 | } |
970 | |
971 | __private_extern__ void |
972 | ifnet_lock_shared(struct ifnet *ifp) |
973 | { |
974 | lck_rw_lock_shared(&ifp->if_lock); |
975 | } |
976 | |
977 | __private_extern__ void |
978 | ifnet_lock_exclusive(struct ifnet *ifp) |
979 | { |
980 | lck_rw_lock_exclusive(&ifp->if_lock); |
981 | } |
982 | |
983 | __private_extern__ void |
984 | ifnet_lock_done(struct ifnet *ifp) |
985 | { |
986 | lck_rw_done(&ifp->if_lock); |
987 | } |
988 | |
989 | #if INET |
990 | __private_extern__ void |
991 | if_inetdata_lock_shared(struct ifnet *ifp) |
992 | { |
993 | lck_rw_lock_shared(&ifp->if_inetdata_lock); |
994 | } |
995 | |
996 | __private_extern__ void |
997 | if_inetdata_lock_exclusive(struct ifnet *ifp) |
998 | { |
999 | lck_rw_lock_exclusive(&ifp->if_inetdata_lock); |
1000 | } |
1001 | |
1002 | __private_extern__ void |
1003 | if_inetdata_lock_done(struct ifnet *ifp) |
1004 | { |
1005 | lck_rw_done(&ifp->if_inetdata_lock); |
1006 | } |
1007 | #endif |
1008 | |
1009 | #if INET6 |
1010 | __private_extern__ void |
1011 | if_inet6data_lock_shared(struct ifnet *ifp) |
1012 | { |
1013 | lck_rw_lock_shared(&ifp->if_inet6data_lock); |
1014 | } |
1015 | |
1016 | __private_extern__ void |
1017 | if_inet6data_lock_exclusive(struct ifnet *ifp) |
1018 | { |
1019 | lck_rw_lock_exclusive(&ifp->if_inet6data_lock); |
1020 | } |
1021 | |
1022 | __private_extern__ void |
1023 | if_inet6data_lock_done(struct ifnet *ifp) |
1024 | { |
1025 | lck_rw_done(&ifp->if_inet6data_lock); |
1026 | } |
1027 | #endif |
1028 | |
1029 | __private_extern__ void |
1030 | ifnet_head_lock_shared(void) |
1031 | { |
1032 | lck_rw_lock_shared(&ifnet_head_lock); |
1033 | } |
1034 | |
1035 | __private_extern__ void |
1036 | ifnet_head_lock_exclusive(void) |
1037 | { |
1038 | lck_rw_lock_exclusive(&ifnet_head_lock); |
1039 | } |
1040 | |
1041 | __private_extern__ void |
1042 | ifnet_head_done(void) |
1043 | { |
1044 | lck_rw_done(&ifnet_head_lock); |
1045 | } |
1046 | |
1047 | __private_extern__ void |
1048 | ifnet_head_assert_exclusive(void) |
1049 | { |
1050 | LCK_RW_ASSERT(&ifnet_head_lock, LCK_RW_ASSERT_EXCLUSIVE); |
1051 | } |
1052 | |
1053 | /* |
1054 | * dlil_ifp_protolist |
1055 | * - get the list of protocols attached to the interface, or just the number |
1056 | * of attached protocols |
1057 | * - if the number returned is greater than 'list_count', truncation occurred |
1058 | * |
1059 | * Note: |
1060 | * - caller must already be holding ifnet lock. |
1061 | */ |
1062 | static u_int32_t |
1063 | dlil_ifp_protolist(struct ifnet *ifp, protocol_family_t *list, |
1064 | u_int32_t list_count) |
1065 | { |
1066 | u_int32_t count = 0; |
1067 | int i; |
1068 | |
1069 | ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_OWNED); |
1070 | |
1071 | if (ifp->if_proto_hash == NULL) |
1072 | goto done; |
1073 | |
1074 | for (i = 0; i < PROTO_HASH_SLOTS; i++) { |
1075 | struct if_proto *proto; |
1076 | SLIST_FOREACH(proto, &ifp->if_proto_hash[i], next_hash) { |
1077 | if (list != NULL && count < list_count) { |
1078 | list[count] = proto->protocol_family; |
1079 | } |
1080 | count++; |
1081 | } |
1082 | } |
1083 | done: |
1084 | return (count); |
1085 | } |
1086 | |
1087 | __private_extern__ u_int32_t |
1088 | if_get_protolist(struct ifnet * ifp, u_int32_t *protolist, u_int32_t count) |
1089 | { |
1090 | ifnet_lock_shared(ifp); |
1091 | count = dlil_ifp_protolist(ifp, protolist, count); |
1092 | ifnet_lock_done(ifp); |
1093 | return (count); |
1094 | } |
1095 | |
1096 | __private_extern__ void |
1097 | if_free_protolist(u_int32_t *list) |
1098 | { |
1099 | _FREE(list, M_TEMP); |
1100 | } |
1101 | |
1102 | __private_extern__ void |
1103 | dlil_post_msg(struct ifnet *ifp, u_int32_t event_subclass, |
1104 | u_int32_t event_code, struct net_event_data *event_data, |
1105 | u_int32_t event_data_len) |
1106 | { |
1107 | struct net_event_data ev_data; |
1108 | struct kev_msg ev_msg; |
1109 | |
1110 | bzero(&ev_msg, sizeof (ev_msg)); |
1111 | bzero(&ev_data, sizeof (ev_data)); |
1112 | /* |
1113 | * a net event always starts with a net_event_data structure |
1114 | * but the caller can generate a simple net event or |
1115 | * provide a longer event structure to post |
1116 | */ |
1117 | ev_msg.vendor_code = KEV_VENDOR_APPLE; |
1118 | ev_msg.kev_class = KEV_NETWORK_CLASS; |
1119 | ev_msg.kev_subclass = event_subclass; |
1120 | ev_msg.event_code = event_code; |
1121 | |
1122 | if (event_data == NULL) { |
1123 | event_data = &ev_data; |
1124 | event_data_len = sizeof (struct net_event_data); |
1125 | } |
1126 | |
1127 | strlcpy(&event_data->if_name[0], ifp->if_name, IFNAMSIZ); |
1128 | event_data->if_family = ifp->if_family; |
1129 | event_data->if_unit = (u_int32_t)ifp->if_unit; |
1130 | |
1131 | ev_msg.dv[0].data_length = event_data_len; |
1132 | ev_msg.dv[0].data_ptr = event_data; |
1133 | ev_msg.dv[1].data_length = 0; |
1134 | |
1135 | /* Don't update interface generation for quality and RRC state changess */ |
1136 | bool update_generation = (event_subclass != KEV_DL_SUBCLASS || |
1137 | (event_code != KEV_DL_LINK_QUALITY_METRIC_CHANGED && |
1138 | event_code != KEV_DL_RRC_STATE_CHANGED)); |
1139 | |
1140 | dlil_event_internal(ifp, &ev_msg, update_generation); |
1141 | } |
1142 | |
1143 | __private_extern__ int |
1144 | dlil_alloc_local_stats(struct ifnet *ifp) |
1145 | { |
1146 | int ret = EINVAL; |
1147 | void *buf, *base, **pbuf; |
1148 | |
1149 | if (ifp == NULL) |
1150 | goto end; |
1151 | |
1152 | if (ifp->if_tcp_stat == NULL && ifp->if_udp_stat == NULL) { |
1153 | /* allocate tcpstat_local structure */ |
1154 | buf = zalloc(dlif_tcpstat_zone); |
1155 | if (buf == NULL) { |
1156 | ret = ENOMEM; |
1157 | goto end; |
1158 | } |
1159 | bzero(buf, dlif_tcpstat_bufsize); |
1160 | |
1161 | /* Get the 64-bit aligned base address for this object */ |
1162 | base = (void *)P2ROUNDUP((intptr_t)buf + sizeof (u_int64_t), |
1163 | sizeof (u_int64_t)); |
1164 | VERIFY(((intptr_t)base + dlif_tcpstat_size) <= |
1165 | ((intptr_t)buf + dlif_tcpstat_bufsize)); |
1166 | |
1167 | /* |
1168 | * Wind back a pointer size from the aligned base and |
1169 | * save the original address so we can free it later. |
1170 | */ |
1171 | pbuf = (void **)((intptr_t)base - sizeof (void *)); |
1172 | *pbuf = buf; |
1173 | ifp->if_tcp_stat = base; |
1174 | |
1175 | /* allocate udpstat_local structure */ |
1176 | buf = zalloc(dlif_udpstat_zone); |
1177 | if (buf == NULL) { |
1178 | ret = ENOMEM; |
1179 | goto end; |
1180 | } |
1181 | bzero(buf, dlif_udpstat_bufsize); |
1182 | |
1183 | /* Get the 64-bit aligned base address for this object */ |
1184 | base = (void *)P2ROUNDUP((intptr_t)buf + sizeof (u_int64_t), |
1185 | sizeof (u_int64_t)); |
1186 | VERIFY(((intptr_t)base + dlif_udpstat_size) <= |
1187 | ((intptr_t)buf + dlif_udpstat_bufsize)); |
1188 | |
1189 | /* |
1190 | * Wind back a pointer size from the aligned base and |
1191 | * save the original address so we can free it later. |
1192 | */ |
1193 | pbuf = (void **)((intptr_t)base - sizeof (void *)); |
1194 | *pbuf = buf; |
1195 | ifp->if_udp_stat = base; |
1196 | |
1197 | VERIFY(IS_P2ALIGNED(ifp->if_tcp_stat, sizeof (u_int64_t)) && |
1198 | IS_P2ALIGNED(ifp->if_udp_stat, sizeof (u_int64_t))); |
1199 | |
1200 | ret = 0; |
1201 | } |
1202 | |
1203 | if (ifp->if_ipv4_stat == NULL) { |
1204 | MALLOC(ifp->if_ipv4_stat, struct if_tcp_ecn_stat *, |
1205 | sizeof (struct if_tcp_ecn_stat), M_TEMP, M_WAITOK|M_ZERO); |
1206 | if (ifp->if_ipv4_stat == NULL) { |
1207 | ret = ENOMEM; |
1208 | goto end; |
1209 | } |
1210 | } |
1211 | |
1212 | if (ifp->if_ipv6_stat == NULL) { |
1213 | MALLOC(ifp->if_ipv6_stat, struct if_tcp_ecn_stat *, |
1214 | sizeof (struct if_tcp_ecn_stat), M_TEMP, M_WAITOK|M_ZERO); |
1215 | if (ifp->if_ipv6_stat == NULL) { |
1216 | ret = ENOMEM; |
1217 | goto end; |
1218 | } |
1219 | } |
1220 | end: |
1221 | if (ret != 0) { |
1222 | if (ifp->if_tcp_stat != NULL) { |
1223 | pbuf = (void **) |
1224 | ((intptr_t)ifp->if_tcp_stat - sizeof (void *)); |
1225 | zfree(dlif_tcpstat_zone, *pbuf); |
1226 | ifp->if_tcp_stat = NULL; |
1227 | } |
1228 | if (ifp->if_udp_stat != NULL) { |
1229 | pbuf = (void **) |
1230 | ((intptr_t)ifp->if_udp_stat - sizeof (void *)); |
1231 | zfree(dlif_udpstat_zone, *pbuf); |
1232 | ifp->if_udp_stat = NULL; |
1233 | } |
1234 | if (ifp->if_ipv4_stat != NULL) { |
1235 | FREE(ifp->if_ipv4_stat, M_TEMP); |
1236 | ifp->if_ipv4_stat = NULL; |
1237 | } |
1238 | if (ifp->if_ipv6_stat != NULL) { |
1239 | FREE(ifp->if_ipv6_stat, M_TEMP); |
1240 | ifp->if_ipv6_stat = NULL; |
1241 | } |
1242 | } |
1243 | |
1244 | return (ret); |
1245 | } |
1246 | |
1247 | static int |
1248 | dlil_create_input_thread(ifnet_t ifp, struct dlil_threading_info *inp) |
1249 | { |
1250 | thread_continue_t func; |
1251 | u_int32_t limit; |
1252 | int error; |
1253 | |
1254 | /* NULL ifp indicates the main input thread, called at dlil_init time */ |
1255 | if (ifp == NULL) { |
1256 | func = dlil_main_input_thread_func; |
1257 | VERIFY(inp == dlil_main_input_thread); |
1258 | (void) strlcat(inp->input_name, |
1259 | "main_input" , DLIL_THREADNAME_LEN); |
1260 | } else if (net_rxpoll && (ifp->if_eflags & IFEF_RXPOLL)) { |
1261 | func = dlil_rxpoll_input_thread_func; |
1262 | VERIFY(inp != dlil_main_input_thread); |
1263 | (void) snprintf(inp->input_name, DLIL_THREADNAME_LEN, |
1264 | "%s_input_poll" , if_name(ifp)); |
1265 | } else { |
1266 | func = dlil_input_thread_func; |
1267 | VERIFY(inp != dlil_main_input_thread); |
1268 | (void) snprintf(inp->input_name, DLIL_THREADNAME_LEN, |
1269 | "%s_input" , if_name(ifp)); |
1270 | } |
1271 | VERIFY(inp->input_thr == THREAD_NULL); |
1272 | |
1273 | inp->lck_grp = lck_grp_alloc_init(inp->input_name, dlil_grp_attributes); |
1274 | lck_mtx_init(&inp->input_lck, inp->lck_grp, dlil_lck_attributes); |
1275 | |
1276 | inp->mode = IFNET_MODEL_INPUT_POLL_OFF; |
1277 | inp->ifp = ifp; /* NULL for main input thread */ |
1278 | |
1279 | net_timerclear(&inp->mode_holdtime); |
1280 | net_timerclear(&inp->mode_lasttime); |
1281 | net_timerclear(&inp->sample_holdtime); |
1282 | net_timerclear(&inp->sample_lasttime); |
1283 | net_timerclear(&inp->dbg_lasttime); |
1284 | |
1285 | /* |
1286 | * For interfaces that support opportunistic polling, set the |
1287 | * low and high watermarks for outstanding inbound packets/bytes. |
1288 | * Also define freeze times for transitioning between modes |
1289 | * and updating the average. |
1290 | */ |
1291 | if (ifp != NULL && net_rxpoll && (ifp->if_eflags & IFEF_RXPOLL)) { |
1292 | limit = MAX(if_rcvq_maxlen, IF_RCVQ_MINLEN); |
1293 | (void) dlil_rxpoll_set_params(ifp, NULL, FALSE); |
1294 | } else { |
1295 | limit = (u_int32_t)-1; |
1296 | } |
1297 | |
1298 | _qinit(&inp->rcvq_pkts, Q_DROPTAIL, limit, QP_MBUF); |
1299 | if (inp == dlil_main_input_thread) { |
1300 | struct dlil_main_threading_info *inpm = |
1301 | (struct dlil_main_threading_info *)inp; |
1302 | _qinit(&inpm->lo_rcvq_pkts, Q_DROPTAIL, limit, QP_MBUF); |
1303 | } |
1304 | |
1305 | error = kernel_thread_start(func, inp, &inp->input_thr); |
1306 | if (error == KERN_SUCCESS) { |
1307 | ml_thread_policy(inp->input_thr, MACHINE_GROUP, |
1308 | (MACHINE_NETWORK_GROUP|MACHINE_NETWORK_NETISR)); |
1309 | /* |
1310 | * We create an affinity set so that the matching workloop |
1311 | * thread or the starter thread (for loopback) can be |
1312 | * scheduled on the same processor set as the input thread. |
1313 | */ |
1314 | if (net_affinity) { |
1315 | struct thread *tp = inp->input_thr; |
1316 | u_int32_t tag; |
1317 | /* |
1318 | * Randomize to reduce the probability |
1319 | * of affinity tag namespace collision. |
1320 | */ |
1321 | read_frandom(&tag, sizeof (tag)); |
1322 | if (dlil_affinity_set(tp, tag) == KERN_SUCCESS) { |
1323 | thread_reference(tp); |
1324 | inp->tag = tag; |
1325 | inp->net_affinity = TRUE; |
1326 | } |
1327 | } |
1328 | } else if (inp == dlil_main_input_thread) { |
1329 | panic_plain("%s: couldn't create main input thread" , __func__); |
1330 | /* NOTREACHED */ |
1331 | } else { |
1332 | panic_plain("%s: couldn't create %s input thread" , __func__, |
1333 | if_name(ifp)); |
1334 | /* NOTREACHED */ |
1335 | } |
1336 | OSAddAtomic(1, &cur_dlil_input_threads); |
1337 | |
1338 | return (error); |
1339 | } |
1340 | |
1341 | #if TEST_INPUT_THREAD_TERMINATION |
1342 | static int |
1343 | sysctl_input_thread_termination_spin SYSCTL_HANDLER_ARGS |
1344 | { |
1345 | #pragma unused(arg1, arg2) |
1346 | uint32_t i; |
1347 | int err; |
1348 | |
1349 | i = if_input_thread_termination_spin; |
1350 | |
1351 | err = sysctl_handle_int(oidp, &i, 0, req); |
1352 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
1353 | return (err); |
1354 | |
1355 | if (net_rxpoll == 0) |
1356 | return (ENXIO); |
1357 | |
1358 | if_input_thread_termination_spin = i; |
1359 | return (err); |
1360 | } |
1361 | #endif /* TEST_INPUT_THREAD_TERMINATION */ |
1362 | |
1363 | static void |
1364 | dlil_clean_threading_info(struct dlil_threading_info *inp) |
1365 | { |
1366 | lck_mtx_destroy(&inp->input_lck, inp->lck_grp); |
1367 | lck_grp_free(inp->lck_grp); |
1368 | |
1369 | inp->input_waiting = 0; |
1370 | inp->wtot = 0; |
1371 | bzero(inp->input_name, sizeof (inp->input_name)); |
1372 | inp->ifp = NULL; |
1373 | VERIFY(qhead(&inp->rcvq_pkts) == NULL && qempty(&inp->rcvq_pkts)); |
1374 | qlimit(&inp->rcvq_pkts) = 0; |
1375 | bzero(&inp->stats, sizeof (inp->stats)); |
1376 | |
1377 | VERIFY(!inp->net_affinity); |
1378 | inp->input_thr = THREAD_NULL; |
1379 | VERIFY(inp->wloop_thr == THREAD_NULL); |
1380 | VERIFY(inp->poll_thr == THREAD_NULL); |
1381 | VERIFY(inp->tag == 0); |
1382 | |
1383 | inp->mode = IFNET_MODEL_INPUT_POLL_OFF; |
1384 | bzero(&inp->tstats, sizeof (inp->tstats)); |
1385 | bzero(&inp->pstats, sizeof (inp->pstats)); |
1386 | bzero(&inp->sstats, sizeof (inp->sstats)); |
1387 | |
1388 | net_timerclear(&inp->mode_holdtime); |
1389 | net_timerclear(&inp->mode_lasttime); |
1390 | net_timerclear(&inp->sample_holdtime); |
1391 | net_timerclear(&inp->sample_lasttime); |
1392 | net_timerclear(&inp->dbg_lasttime); |
1393 | |
1394 | #if IFNET_INPUT_SANITY_CHK |
1395 | inp->input_mbuf_cnt = 0; |
1396 | #endif /* IFNET_INPUT_SANITY_CHK */ |
1397 | } |
1398 | |
1399 | static void |
1400 | dlil_terminate_input_thread(struct dlil_threading_info *inp) |
1401 | { |
1402 | struct ifnet *ifp = inp->ifp; |
1403 | |
1404 | VERIFY(current_thread() == inp->input_thr); |
1405 | VERIFY(inp != dlil_main_input_thread); |
1406 | |
1407 | OSAddAtomic(-1, &cur_dlil_input_threads); |
1408 | |
1409 | #if TEST_INPUT_THREAD_TERMINATION |
1410 | { /* do something useless that won't get optimized away */ |
1411 | uint32_t v = 1; |
1412 | for (uint32_t i = 0; |
1413 | i < if_input_thread_termination_spin; |
1414 | i++) { |
1415 | v = (i + 1) * v; |
1416 | } |
1417 | printf("the value is %d\n" , v); |
1418 | } |
1419 | #endif /* TEST_INPUT_THREAD_TERMINATION */ |
1420 | |
1421 | lck_mtx_lock_spin(&inp->input_lck); |
1422 | VERIFY((inp->input_waiting & DLIL_INPUT_TERMINATE) != 0); |
1423 | inp->input_waiting |= DLIL_INPUT_TERMINATE_COMPLETE; |
1424 | wakeup_one((caddr_t)&inp->input_waiting); |
1425 | lck_mtx_unlock(&inp->input_lck); |
1426 | |
1427 | /* for the extra refcnt from kernel_thread_start() */ |
1428 | thread_deallocate(current_thread()); |
1429 | |
1430 | if (dlil_verbose) { |
1431 | printf("%s: input thread terminated\n" , |
1432 | if_name(ifp)); |
1433 | } |
1434 | |
1435 | /* this is the end */ |
1436 | thread_terminate(current_thread()); |
1437 | /* NOTREACHED */ |
1438 | } |
1439 | |
1440 | static kern_return_t |
1441 | dlil_affinity_set(struct thread *tp, u_int32_t tag) |
1442 | { |
1443 | thread_affinity_policy_data_t policy; |
1444 | |
1445 | bzero(&policy, sizeof (policy)); |
1446 | policy.affinity_tag = tag; |
1447 | return (thread_policy_set(tp, THREAD_AFFINITY_POLICY, |
1448 | (thread_policy_t)&policy, THREAD_AFFINITY_POLICY_COUNT)); |
1449 | } |
1450 | |
1451 | void |
1452 | dlil_init(void) |
1453 | { |
1454 | thread_t thread = THREAD_NULL; |
1455 | |
1456 | /* |
1457 | * The following fields must be 64-bit aligned for atomic operations. |
1458 | */ |
1459 | IF_DATA_REQUIRE_ALIGNED_64(ifi_ipackets); |
1460 | IF_DATA_REQUIRE_ALIGNED_64(ifi_ierrors); |
1461 | IF_DATA_REQUIRE_ALIGNED_64(ifi_opackets); |
1462 | IF_DATA_REQUIRE_ALIGNED_64(ifi_oerrors); |
1463 | IF_DATA_REQUIRE_ALIGNED_64(ifi_collisions); |
1464 | IF_DATA_REQUIRE_ALIGNED_64(ifi_ibytes); |
1465 | IF_DATA_REQUIRE_ALIGNED_64(ifi_obytes); |
1466 | IF_DATA_REQUIRE_ALIGNED_64(ifi_imcasts); |
1467 | IF_DATA_REQUIRE_ALIGNED_64(ifi_omcasts); |
1468 | IF_DATA_REQUIRE_ALIGNED_64(ifi_iqdrops); |
1469 | IF_DATA_REQUIRE_ALIGNED_64(ifi_noproto); |
1470 | IF_DATA_REQUIRE_ALIGNED_64(ifi_alignerrs); |
1471 | IF_DATA_REQUIRE_ALIGNED_64(ifi_dt_bytes); |
1472 | IF_DATA_REQUIRE_ALIGNED_64(ifi_fpackets); |
1473 | IF_DATA_REQUIRE_ALIGNED_64(ifi_fbytes); |
1474 | |
1475 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_ipackets); |
1476 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_ierrors); |
1477 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_opackets); |
1478 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_oerrors); |
1479 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_collisions); |
1480 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_ibytes); |
1481 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_obytes); |
1482 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_imcasts); |
1483 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_omcasts); |
1484 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_iqdrops); |
1485 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_noproto); |
1486 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_alignerrs); |
1487 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_dt_bytes); |
1488 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_fpackets); |
1489 | IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_fbytes); |
1490 | |
1491 | /* |
1492 | * These IF_HWASSIST_ flags must be equal to their IFNET_* counterparts. |
1493 | */ |
1494 | _CASSERT(IF_HWASSIST_CSUM_IP == IFNET_CSUM_IP); |
1495 | _CASSERT(IF_HWASSIST_CSUM_TCP == IFNET_CSUM_TCP); |
1496 | _CASSERT(IF_HWASSIST_CSUM_UDP == IFNET_CSUM_UDP); |
1497 | _CASSERT(IF_HWASSIST_CSUM_IP_FRAGS == IFNET_CSUM_FRAGMENT); |
1498 | _CASSERT(IF_HWASSIST_CSUM_FRAGMENT == IFNET_IP_FRAGMENT); |
1499 | _CASSERT(IF_HWASSIST_CSUM_TCPIPV6 == IFNET_CSUM_TCPIPV6); |
1500 | _CASSERT(IF_HWASSIST_CSUM_UDPIPV6 == IFNET_CSUM_UDPIPV6); |
1501 | _CASSERT(IF_HWASSIST_CSUM_FRAGMENT_IPV6 == IFNET_IPV6_FRAGMENT); |
1502 | _CASSERT(IF_HWASSIST_CSUM_PARTIAL == IFNET_CSUM_PARTIAL); |
1503 | _CASSERT(IF_HWASSIST_CSUM_ZERO_INVERT == IFNET_CSUM_ZERO_INVERT); |
1504 | _CASSERT(IF_HWASSIST_VLAN_TAGGING == IFNET_VLAN_TAGGING); |
1505 | _CASSERT(IF_HWASSIST_VLAN_MTU == IFNET_VLAN_MTU); |
1506 | _CASSERT(IF_HWASSIST_TSO_V4 == IFNET_TSO_IPV4); |
1507 | _CASSERT(IF_HWASSIST_TSO_V6 == IFNET_TSO_IPV6); |
1508 | |
1509 | /* |
1510 | * ... as well as the mbuf checksum flags counterparts. |
1511 | */ |
1512 | _CASSERT(CSUM_IP == IF_HWASSIST_CSUM_IP); |
1513 | _CASSERT(CSUM_TCP == IF_HWASSIST_CSUM_TCP); |
1514 | _CASSERT(CSUM_UDP == IF_HWASSIST_CSUM_UDP); |
1515 | _CASSERT(CSUM_IP_FRAGS == IF_HWASSIST_CSUM_IP_FRAGS); |
1516 | _CASSERT(CSUM_FRAGMENT == IF_HWASSIST_CSUM_FRAGMENT); |
1517 | _CASSERT(CSUM_TCPIPV6 == IF_HWASSIST_CSUM_TCPIPV6); |
1518 | _CASSERT(CSUM_UDPIPV6 == IF_HWASSIST_CSUM_UDPIPV6); |
1519 | _CASSERT(CSUM_FRAGMENT_IPV6 == IF_HWASSIST_CSUM_FRAGMENT_IPV6); |
1520 | _CASSERT(CSUM_PARTIAL == IF_HWASSIST_CSUM_PARTIAL); |
1521 | _CASSERT(CSUM_ZERO_INVERT == IF_HWASSIST_CSUM_ZERO_INVERT); |
1522 | _CASSERT(CSUM_VLAN_TAG_VALID == IF_HWASSIST_VLAN_TAGGING); |
1523 | |
1524 | /* |
1525 | * Make sure we have at least IF_LLREACH_MAXLEN in the llreach info. |
1526 | */ |
1527 | _CASSERT(IF_LLREACH_MAXLEN <= IF_LLREACHINFO_ADDRLEN); |
1528 | _CASSERT(IFNET_LLREACHINFO_ADDRLEN == IF_LLREACHINFO_ADDRLEN); |
1529 | |
1530 | _CASSERT(IFRLOGF_DLIL == IFNET_LOGF_DLIL); |
1531 | _CASSERT(IFRLOGF_FAMILY == IFNET_LOGF_FAMILY); |
1532 | _CASSERT(IFRLOGF_DRIVER == IFNET_LOGF_DRIVER); |
1533 | _CASSERT(IFRLOGF_FIRMWARE == IFNET_LOGF_FIRMWARE); |
1534 | |
1535 | _CASSERT(IFRLOGCAT_CONNECTIVITY == IFNET_LOGCAT_CONNECTIVITY); |
1536 | _CASSERT(IFRLOGCAT_QUALITY == IFNET_LOGCAT_QUALITY); |
1537 | _CASSERT(IFRLOGCAT_PERFORMANCE == IFNET_LOGCAT_PERFORMANCE); |
1538 | |
1539 | _CASSERT(IFRTYPE_FAMILY_ANY == IFNET_FAMILY_ANY); |
1540 | _CASSERT(IFRTYPE_FAMILY_LOOPBACK == IFNET_FAMILY_LOOPBACK); |
1541 | _CASSERT(IFRTYPE_FAMILY_ETHERNET == IFNET_FAMILY_ETHERNET); |
1542 | _CASSERT(IFRTYPE_FAMILY_SLIP == IFNET_FAMILY_SLIP); |
1543 | _CASSERT(IFRTYPE_FAMILY_TUN == IFNET_FAMILY_TUN); |
1544 | _CASSERT(IFRTYPE_FAMILY_VLAN == IFNET_FAMILY_VLAN); |
1545 | _CASSERT(IFRTYPE_FAMILY_PPP == IFNET_FAMILY_PPP); |
1546 | _CASSERT(IFRTYPE_FAMILY_PVC == IFNET_FAMILY_PVC); |
1547 | _CASSERT(IFRTYPE_FAMILY_DISC == IFNET_FAMILY_DISC); |
1548 | _CASSERT(IFRTYPE_FAMILY_MDECAP == IFNET_FAMILY_MDECAP); |
1549 | _CASSERT(IFRTYPE_FAMILY_GIF == IFNET_FAMILY_GIF); |
1550 | _CASSERT(IFRTYPE_FAMILY_FAITH == IFNET_FAMILY_FAITH); |
1551 | _CASSERT(IFRTYPE_FAMILY_STF == IFNET_FAMILY_STF); |
1552 | _CASSERT(IFRTYPE_FAMILY_FIREWIRE == IFNET_FAMILY_FIREWIRE); |
1553 | _CASSERT(IFRTYPE_FAMILY_BOND == IFNET_FAMILY_BOND); |
1554 | _CASSERT(IFRTYPE_FAMILY_CELLULAR == IFNET_FAMILY_CELLULAR); |
1555 | |
1556 | _CASSERT(IFRTYPE_SUBFAMILY_ANY == IFNET_SUBFAMILY_ANY); |
1557 | _CASSERT(IFRTYPE_SUBFAMILY_USB == IFNET_SUBFAMILY_USB); |
1558 | _CASSERT(IFRTYPE_SUBFAMILY_BLUETOOTH == IFNET_SUBFAMILY_BLUETOOTH); |
1559 | _CASSERT(IFRTYPE_SUBFAMILY_WIFI == IFNET_SUBFAMILY_WIFI); |
1560 | _CASSERT(IFRTYPE_SUBFAMILY_THUNDERBOLT == IFNET_SUBFAMILY_THUNDERBOLT); |
1561 | _CASSERT(IFRTYPE_SUBFAMILY_RESERVED == IFNET_SUBFAMILY_RESERVED); |
1562 | _CASSERT(IFRTYPE_SUBFAMILY_INTCOPROC == IFNET_SUBFAMILY_INTCOPROC); |
1563 | |
1564 | _CASSERT(DLIL_MODIDLEN == IFNET_MODIDLEN); |
1565 | _CASSERT(DLIL_MODARGLEN == IFNET_MODARGLEN); |
1566 | |
1567 | PE_parse_boot_argn("net_affinity" , &net_affinity, |
1568 | sizeof (net_affinity)); |
1569 | |
1570 | PE_parse_boot_argn("net_rxpoll" , &net_rxpoll, sizeof (net_rxpoll)); |
1571 | |
1572 | PE_parse_boot_argn("net_rtref" , &net_rtref, sizeof (net_rtref)); |
1573 | |
1574 | PE_parse_boot_argn("ifnet_debug" , &ifnet_debug, sizeof (ifnet_debug)); |
1575 | |
1576 | dlif_size = (ifnet_debug == 0) ? sizeof (struct dlil_ifnet) : |
1577 | sizeof (struct dlil_ifnet_dbg); |
1578 | /* Enforce 64-bit alignment for dlil_ifnet structure */ |
1579 | dlif_bufsize = dlif_size + sizeof (void *) + sizeof (u_int64_t); |
1580 | dlif_bufsize = P2ROUNDUP(dlif_bufsize, sizeof (u_int64_t)); |
1581 | dlif_zone = zinit(dlif_bufsize, DLIF_ZONE_MAX * dlif_bufsize, |
1582 | 0, DLIF_ZONE_NAME); |
1583 | if (dlif_zone == NULL) { |
1584 | panic_plain("%s: failed allocating %s" , __func__, |
1585 | DLIF_ZONE_NAME); |
1586 | /* NOTREACHED */ |
1587 | } |
1588 | zone_change(dlif_zone, Z_EXPAND, TRUE); |
1589 | zone_change(dlif_zone, Z_CALLERACCT, FALSE); |
1590 | |
1591 | dlif_filt_size = sizeof (struct ifnet_filter); |
1592 | dlif_filt_zone = zinit(dlif_filt_size, |
1593 | DLIF_FILT_ZONE_MAX * dlif_filt_size, 0, DLIF_FILT_ZONE_NAME); |
1594 | if (dlif_filt_zone == NULL) { |
1595 | panic_plain("%s: failed allocating %s" , __func__, |
1596 | DLIF_FILT_ZONE_NAME); |
1597 | /* NOTREACHED */ |
1598 | } |
1599 | zone_change(dlif_filt_zone, Z_EXPAND, TRUE); |
1600 | zone_change(dlif_filt_zone, Z_CALLERACCT, FALSE); |
1601 | |
1602 | dlif_phash_size = sizeof (struct proto_hash_entry) * PROTO_HASH_SLOTS; |
1603 | dlif_phash_zone = zinit(dlif_phash_size, |
1604 | DLIF_PHASH_ZONE_MAX * dlif_phash_size, 0, DLIF_PHASH_ZONE_NAME); |
1605 | if (dlif_phash_zone == NULL) { |
1606 | panic_plain("%s: failed allocating %s" , __func__, |
1607 | DLIF_PHASH_ZONE_NAME); |
1608 | /* NOTREACHED */ |
1609 | } |
1610 | zone_change(dlif_phash_zone, Z_EXPAND, TRUE); |
1611 | zone_change(dlif_phash_zone, Z_CALLERACCT, FALSE); |
1612 | |
1613 | dlif_proto_size = sizeof (struct if_proto); |
1614 | dlif_proto_zone = zinit(dlif_proto_size, |
1615 | DLIF_PROTO_ZONE_MAX * dlif_proto_size, 0, DLIF_PROTO_ZONE_NAME); |
1616 | if (dlif_proto_zone == NULL) { |
1617 | panic_plain("%s: failed allocating %s" , __func__, |
1618 | DLIF_PROTO_ZONE_NAME); |
1619 | /* NOTREACHED */ |
1620 | } |
1621 | zone_change(dlif_proto_zone, Z_EXPAND, TRUE); |
1622 | zone_change(dlif_proto_zone, Z_CALLERACCT, FALSE); |
1623 | |
1624 | dlif_tcpstat_size = sizeof (struct tcpstat_local); |
1625 | /* Enforce 64-bit alignment for tcpstat_local structure */ |
1626 | dlif_tcpstat_bufsize = |
1627 | dlif_tcpstat_size + sizeof (void *) + sizeof (u_int64_t); |
1628 | dlif_tcpstat_bufsize = |
1629 | P2ROUNDUP(dlif_tcpstat_bufsize, sizeof (u_int64_t)); |
1630 | dlif_tcpstat_zone = zinit(dlif_tcpstat_bufsize, |
1631 | DLIF_TCPSTAT_ZONE_MAX * dlif_tcpstat_bufsize, 0, |
1632 | DLIF_TCPSTAT_ZONE_NAME); |
1633 | if (dlif_tcpstat_zone == NULL) { |
1634 | panic_plain("%s: failed allocating %s" , __func__, |
1635 | DLIF_TCPSTAT_ZONE_NAME); |
1636 | /* NOTREACHED */ |
1637 | } |
1638 | zone_change(dlif_tcpstat_zone, Z_EXPAND, TRUE); |
1639 | zone_change(dlif_tcpstat_zone, Z_CALLERACCT, FALSE); |
1640 | |
1641 | dlif_udpstat_size = sizeof (struct udpstat_local); |
1642 | /* Enforce 64-bit alignment for udpstat_local structure */ |
1643 | dlif_udpstat_bufsize = |
1644 | dlif_udpstat_size + sizeof (void *) + sizeof (u_int64_t); |
1645 | dlif_udpstat_bufsize = |
1646 | P2ROUNDUP(dlif_udpstat_bufsize, sizeof (u_int64_t)); |
1647 | dlif_udpstat_zone = zinit(dlif_udpstat_bufsize, |
1648 | DLIF_TCPSTAT_ZONE_MAX * dlif_udpstat_bufsize, 0, |
1649 | DLIF_UDPSTAT_ZONE_NAME); |
1650 | if (dlif_udpstat_zone == NULL) { |
1651 | panic_plain("%s: failed allocating %s" , __func__, |
1652 | DLIF_UDPSTAT_ZONE_NAME); |
1653 | /* NOTREACHED */ |
1654 | } |
1655 | zone_change(dlif_udpstat_zone, Z_EXPAND, TRUE); |
1656 | zone_change(dlif_udpstat_zone, Z_CALLERACCT, FALSE); |
1657 | |
1658 | ifnet_llreach_init(); |
1659 | eventhandler_lists_ctxt_init(&ifnet_evhdlr_ctxt); |
1660 | |
1661 | TAILQ_INIT(&dlil_ifnet_head); |
1662 | TAILQ_INIT(&ifnet_head); |
1663 | TAILQ_INIT(&ifnet_detaching_head); |
1664 | TAILQ_INIT(&ifnet_ordered_head); |
1665 | |
1666 | /* Setup the lock groups we will use */ |
1667 | dlil_grp_attributes = lck_grp_attr_alloc_init(); |
1668 | |
1669 | dlil_lock_group = lck_grp_alloc_init("DLIL internal locks" , |
1670 | dlil_grp_attributes); |
1671 | ifnet_lock_group = lck_grp_alloc_init("ifnet locks" , |
1672 | dlil_grp_attributes); |
1673 | ifnet_head_lock_group = lck_grp_alloc_init("ifnet head lock" , |
1674 | dlil_grp_attributes); |
1675 | ifnet_rcv_lock_group = lck_grp_alloc_init("ifnet rcv locks" , |
1676 | dlil_grp_attributes); |
1677 | ifnet_snd_lock_group = lck_grp_alloc_init("ifnet snd locks" , |
1678 | dlil_grp_attributes); |
1679 | |
1680 | /* Setup the lock attributes we will use */ |
1681 | dlil_lck_attributes = lck_attr_alloc_init(); |
1682 | |
1683 | ifnet_lock_attr = lck_attr_alloc_init(); |
1684 | |
1685 | lck_rw_init(&ifnet_head_lock, ifnet_head_lock_group, |
1686 | dlil_lck_attributes); |
1687 | lck_mtx_init(&dlil_ifnet_lock, dlil_lock_group, dlil_lck_attributes); |
1688 | |
1689 | /* Setup interface flow control related items */ |
1690 | lck_mtx_init(&ifnet_fc_lock, dlil_lock_group, dlil_lck_attributes); |
1691 | |
1692 | ifnet_fc_zone_size = sizeof (struct ifnet_fc_entry); |
1693 | ifnet_fc_zone = zinit(ifnet_fc_zone_size, |
1694 | IFNET_FC_ZONE_MAX * ifnet_fc_zone_size, 0, IFNET_FC_ZONE_NAME); |
1695 | if (ifnet_fc_zone == NULL) { |
1696 | panic_plain("%s: failed allocating %s" , __func__, |
1697 | IFNET_FC_ZONE_NAME); |
1698 | /* NOTREACHED */ |
1699 | } |
1700 | zone_change(ifnet_fc_zone, Z_EXPAND, TRUE); |
1701 | zone_change(ifnet_fc_zone, Z_CALLERACCT, FALSE); |
1702 | |
1703 | /* Initialize interface address subsystem */ |
1704 | ifa_init(); |
1705 | |
1706 | #if PF |
1707 | /* Initialize the packet filter */ |
1708 | pfinit(); |
1709 | #endif /* PF */ |
1710 | |
1711 | /* Initialize queue algorithms */ |
1712 | classq_init(); |
1713 | |
1714 | /* Initialize packet schedulers */ |
1715 | pktsched_init(); |
1716 | |
1717 | /* Initialize flow advisory subsystem */ |
1718 | flowadv_init(); |
1719 | |
1720 | /* Initialize the pktap virtual interface */ |
1721 | pktap_init(); |
1722 | |
1723 | /* Initialize the service class to dscp map */ |
1724 | net_qos_map_init(); |
1725 | |
1726 | /* Initialize the interface port list */ |
1727 | if_ports_used_init(); |
1728 | |
1729 | /* Initialize the interface low power mode event handler */ |
1730 | if_low_power_evhdlr_init(); |
1731 | |
1732 | #if DEBUG || DEVELOPMENT |
1733 | /* Run self-tests */ |
1734 | dlil_verify_sum16(); |
1735 | #endif /* DEBUG || DEVELOPMENT */ |
1736 | |
1737 | /* Initialize link layer table */ |
1738 | lltable_glbl_init(); |
1739 | |
1740 | /* |
1741 | * Create and start up the main DLIL input thread and the interface |
1742 | * detacher threads once everything is initialized. |
1743 | */ |
1744 | dlil_create_input_thread(NULL, dlil_main_input_thread); |
1745 | |
1746 | if (kernel_thread_start(ifnet_detacher_thread_func, |
1747 | NULL, &thread) != KERN_SUCCESS) { |
1748 | panic_plain("%s: couldn't create detacher thread" , __func__); |
1749 | /* NOTREACHED */ |
1750 | } |
1751 | thread_deallocate(thread); |
1752 | |
1753 | } |
1754 | |
1755 | static void |
1756 | if_flt_monitor_busy(struct ifnet *ifp) |
1757 | { |
1758 | LCK_MTX_ASSERT(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED); |
1759 | |
1760 | ++ifp->if_flt_busy; |
1761 | VERIFY(ifp->if_flt_busy != 0); |
1762 | } |
1763 | |
1764 | static void |
1765 | if_flt_monitor_unbusy(struct ifnet *ifp) |
1766 | { |
1767 | if_flt_monitor_leave(ifp); |
1768 | } |
1769 | |
1770 | static void |
1771 | if_flt_monitor_enter(struct ifnet *ifp) |
1772 | { |
1773 | LCK_MTX_ASSERT(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED); |
1774 | |
1775 | while (ifp->if_flt_busy) { |
1776 | ++ifp->if_flt_waiters; |
1777 | (void) msleep(&ifp->if_flt_head, &ifp->if_flt_lock, |
1778 | (PZERO - 1), "if_flt_monitor" , NULL); |
1779 | } |
1780 | if_flt_monitor_busy(ifp); |
1781 | } |
1782 | |
1783 | static void |
1784 | if_flt_monitor_leave(struct ifnet *ifp) |
1785 | { |
1786 | LCK_MTX_ASSERT(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED); |
1787 | |
1788 | VERIFY(ifp->if_flt_busy != 0); |
1789 | --ifp->if_flt_busy; |
1790 | |
1791 | if (ifp->if_flt_busy == 0 && ifp->if_flt_waiters > 0) { |
1792 | ifp->if_flt_waiters = 0; |
1793 | wakeup(&ifp->if_flt_head); |
1794 | } |
1795 | } |
1796 | |
1797 | __private_extern__ int |
1798 | dlil_attach_filter(struct ifnet *ifp, const struct iff_filter *if_filter, |
1799 | interface_filter_t *filter_ref, u_int32_t flags) |
1800 | { |
1801 | int retval = 0; |
1802 | struct ifnet_filter *filter = NULL; |
1803 | |
1804 | ifnet_head_lock_shared(); |
1805 | /* Check that the interface is in the global list */ |
1806 | if (!ifnet_lookup(ifp)) { |
1807 | retval = ENXIO; |
1808 | goto done; |
1809 | } |
1810 | |
1811 | filter = zalloc(dlif_filt_zone); |
1812 | if (filter == NULL) { |
1813 | retval = ENOMEM; |
1814 | goto done; |
1815 | } |
1816 | bzero(filter, dlif_filt_size); |
1817 | |
1818 | /* refcnt held above during lookup */ |
1819 | filter->filt_flags = flags; |
1820 | filter->filt_ifp = ifp; |
1821 | filter->filt_cookie = if_filter->iff_cookie; |
1822 | filter->filt_name = if_filter->iff_name; |
1823 | filter->filt_protocol = if_filter->iff_protocol; |
1824 | /* |
1825 | * Do not install filter callbacks for internal coproc interface |
1826 | */ |
1827 | if (!IFNET_IS_INTCOPROC(ifp)) { |
1828 | filter->filt_input = if_filter->iff_input; |
1829 | filter->filt_output = if_filter->iff_output; |
1830 | filter->filt_event = if_filter->iff_event; |
1831 | filter->filt_ioctl = if_filter->iff_ioctl; |
1832 | } |
1833 | filter->filt_detached = if_filter->iff_detached; |
1834 | |
1835 | lck_mtx_lock(&ifp->if_flt_lock); |
1836 | if_flt_monitor_enter(ifp); |
1837 | |
1838 | LCK_MTX_ASSERT(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED); |
1839 | TAILQ_INSERT_TAIL(&ifp->if_flt_head, filter, filt_next); |
1840 | |
1841 | if_flt_monitor_leave(ifp); |
1842 | lck_mtx_unlock(&ifp->if_flt_lock); |
1843 | |
1844 | *filter_ref = filter; |
1845 | |
1846 | /* |
1847 | * Bump filter count and route_generation ID to let TCP |
1848 | * know it shouldn't do TSO on this connection |
1849 | */ |
1850 | if ((filter->filt_flags & DLIL_IFF_TSO) == 0) { |
1851 | OSAddAtomic(1, &dlil_filter_disable_tso_count); |
1852 | routegenid_update(); |
1853 | } |
1854 | OSIncrementAtomic64(&net_api_stats.nas_iflt_attach_count); |
1855 | INC_ATOMIC_INT64_LIM(net_api_stats.nas_iflt_attach_total); |
1856 | if ((filter->filt_flags & DLIL_IFF_INTERNAL)) { |
1857 | INC_ATOMIC_INT64_LIM(net_api_stats.nas_iflt_attach_os_total); |
1858 | } |
1859 | if (dlil_verbose) { |
1860 | printf("%s: %s filter attached\n" , if_name(ifp), |
1861 | if_filter->iff_name); |
1862 | } |
1863 | done: |
1864 | ifnet_head_done(); |
1865 | if (retval != 0 && ifp != NULL) { |
1866 | DLIL_PRINTF("%s: failed to attach %s (err=%d)\n" , |
1867 | if_name(ifp), if_filter->iff_name, retval); |
1868 | } |
1869 | if (retval != 0 && filter != NULL) |
1870 | zfree(dlif_filt_zone, filter); |
1871 | |
1872 | return (retval); |
1873 | } |
1874 | |
1875 | static int |
1876 | dlil_detach_filter_internal(interface_filter_t filter, int detached) |
1877 | { |
1878 | int retval = 0; |
1879 | |
1880 | if (detached == 0) { |
1881 | ifnet_t ifp = NULL; |
1882 | |
1883 | ifnet_head_lock_shared(); |
1884 | TAILQ_FOREACH(ifp, &ifnet_head, if_link) { |
1885 | interface_filter_t entry = NULL; |
1886 | |
1887 | lck_mtx_lock(&ifp->if_flt_lock); |
1888 | TAILQ_FOREACH(entry, &ifp->if_flt_head, filt_next) { |
1889 | if (entry != filter || entry->filt_skip) |
1890 | continue; |
1891 | /* |
1892 | * We've found a match; since it's possible |
1893 | * that the thread gets blocked in the monitor, |
1894 | * we do the lock dance. Interface should |
1895 | * not be detached since we still have a use |
1896 | * count held during filter attach. |
1897 | */ |
1898 | entry->filt_skip = 1; /* skip input/output */ |
1899 | lck_mtx_unlock(&ifp->if_flt_lock); |
1900 | ifnet_head_done(); |
1901 | |
1902 | lck_mtx_lock(&ifp->if_flt_lock); |
1903 | if_flt_monitor_enter(ifp); |
1904 | LCK_MTX_ASSERT(&ifp->if_flt_lock, |
1905 | LCK_MTX_ASSERT_OWNED); |
1906 | |
1907 | /* Remove the filter from the list */ |
1908 | TAILQ_REMOVE(&ifp->if_flt_head, filter, |
1909 | filt_next); |
1910 | |
1911 | if_flt_monitor_leave(ifp); |
1912 | lck_mtx_unlock(&ifp->if_flt_lock); |
1913 | if (dlil_verbose) { |
1914 | printf("%s: %s filter detached\n" , |
1915 | if_name(ifp), filter->filt_name); |
1916 | } |
1917 | goto destroy; |
1918 | } |
1919 | lck_mtx_unlock(&ifp->if_flt_lock); |
1920 | } |
1921 | ifnet_head_done(); |
1922 | |
1923 | /* filter parameter is not a valid filter ref */ |
1924 | retval = EINVAL; |
1925 | goto done; |
1926 | } |
1927 | |
1928 | if (dlil_verbose) |
1929 | printf("%s filter detached\n" , filter->filt_name); |
1930 | |
1931 | destroy: |
1932 | |
1933 | /* Call the detached function if there is one */ |
1934 | if (filter->filt_detached) |
1935 | filter->filt_detached(filter->filt_cookie, filter->filt_ifp); |
1936 | |
1937 | /* |
1938 | * Decrease filter count and route_generation ID to let TCP |
1939 | * know it should reevalute doing TSO or not |
1940 | */ |
1941 | if ((filter->filt_flags & DLIL_IFF_TSO) == 0) { |
1942 | OSAddAtomic(-1, &dlil_filter_disable_tso_count); |
1943 | routegenid_update(); |
1944 | } |
1945 | |
1946 | VERIFY(OSDecrementAtomic64(&net_api_stats.nas_iflt_attach_count) > 0); |
1947 | |
1948 | /* Free the filter */ |
1949 | zfree(dlif_filt_zone, filter); |
1950 | filter = NULL; |
1951 | done: |
1952 | if (retval != 0 && filter != NULL) { |
1953 | DLIL_PRINTF("failed to detach %s filter (err=%d)\n" , |
1954 | filter->filt_name, retval); |
1955 | } |
1956 | |
1957 | return (retval); |
1958 | } |
1959 | |
1960 | __private_extern__ void |
1961 | dlil_detach_filter(interface_filter_t filter) |
1962 | { |
1963 | if (filter == NULL) |
1964 | return; |
1965 | dlil_detach_filter_internal(filter, 0); |
1966 | } |
1967 | |
1968 | /* |
1969 | * Main input thread: |
1970 | * |
1971 | * a) handles all inbound packets for lo0 |
1972 | * b) handles all inbound packets for interfaces with no dedicated |
1973 | * input thread (e.g. anything but Ethernet/PDP or those that support |
1974 | * opportunistic polling.) |
1975 | * c) protocol registrations |
1976 | * d) packet injections |
1977 | */ |
1978 | __attribute__((noreturn)) |
1979 | static void |
1980 | dlil_main_input_thread_func(void *v, wait_result_t w) |
1981 | { |
1982 | #pragma unused(w) |
1983 | struct dlil_main_threading_info *inpm = v; |
1984 | struct dlil_threading_info *inp = v; |
1985 | |
1986 | VERIFY(inp == dlil_main_input_thread); |
1987 | VERIFY(inp->ifp == NULL); |
1988 | VERIFY(inp->mode == IFNET_MODEL_INPUT_POLL_OFF); |
1989 | |
1990 | while (1) { |
1991 | struct mbuf *m = NULL, *m_loop = NULL; |
1992 | u_int32_t m_cnt, m_cnt_loop; |
1993 | boolean_t proto_req; |
1994 | |
1995 | lck_mtx_lock_spin(&inp->input_lck); |
1996 | |
1997 | /* Wait until there is work to be done */ |
1998 | while (!(inp->input_waiting & ~DLIL_INPUT_RUNNING)) { |
1999 | inp->input_waiting &= ~DLIL_INPUT_RUNNING; |
2000 | (void) msleep(&inp->input_waiting, &inp->input_lck, |
2001 | (PZERO - 1) | PSPIN, inp->input_name, NULL); |
2002 | } |
2003 | |
2004 | inp->input_waiting |= DLIL_INPUT_RUNNING; |
2005 | inp->input_waiting &= ~DLIL_INPUT_WAITING; |
2006 | |
2007 | /* Main input thread cannot be terminated */ |
2008 | VERIFY(!(inp->input_waiting & DLIL_INPUT_TERMINATE)); |
2009 | |
2010 | proto_req = (inp->input_waiting & |
2011 | (DLIL_PROTO_WAITING | DLIL_PROTO_REGISTER)); |
2012 | |
2013 | /* Packets for non-dedicated interfaces other than lo0 */ |
2014 | m_cnt = qlen(&inp->rcvq_pkts); |
2015 | m = _getq_all(&inp->rcvq_pkts, NULL, NULL, NULL); |
2016 | |
2017 | /* Packets exclusive to lo0 */ |
2018 | m_cnt_loop = qlen(&inpm->lo_rcvq_pkts); |
2019 | m_loop = _getq_all(&inpm->lo_rcvq_pkts, NULL, NULL, NULL); |
2020 | |
2021 | inp->wtot = 0; |
2022 | |
2023 | lck_mtx_unlock(&inp->input_lck); |
2024 | |
2025 | /* |
2026 | * NOTE warning %%% attention !!!! |
2027 | * We should think about putting some thread starvation |
2028 | * safeguards if we deal with long chains of packets. |
2029 | */ |
2030 | if (m_loop != NULL) |
2031 | dlil_input_packet_list_extended(lo_ifp, m_loop, |
2032 | m_cnt_loop, inp->mode); |
2033 | |
2034 | if (m != NULL) |
2035 | dlil_input_packet_list_extended(NULL, m, |
2036 | m_cnt, inp->mode); |
2037 | |
2038 | if (proto_req) |
2039 | proto_input_run(); |
2040 | } |
2041 | |
2042 | /* NOTREACHED */ |
2043 | VERIFY(0); /* we should never get here */ |
2044 | } |
2045 | |
2046 | /* |
2047 | * Input thread for interfaces with legacy input model. |
2048 | */ |
2049 | static void |
2050 | dlil_input_thread_func(void *v, wait_result_t w) |
2051 | { |
2052 | #pragma unused(w) |
2053 | char thread_name[MAXTHREADNAMESIZE]; |
2054 | struct dlil_threading_info *inp = v; |
2055 | struct ifnet *ifp = inp->ifp; |
2056 | |
2057 | /* Construct the name for this thread, and then apply it. */ |
2058 | bzero(thread_name, sizeof(thread_name)); |
2059 | snprintf(thread_name, sizeof(thread_name), "dlil_input_%s" , ifp->if_xname); |
2060 | thread_set_thread_name(inp->input_thr, thread_name); |
2061 | |
2062 | VERIFY(inp != dlil_main_input_thread); |
2063 | VERIFY(ifp != NULL); |
2064 | VERIFY(!(ifp->if_eflags & IFEF_RXPOLL) || !net_rxpoll); |
2065 | VERIFY(inp->mode == IFNET_MODEL_INPUT_POLL_OFF); |
2066 | |
2067 | while (1) { |
2068 | struct mbuf *m = NULL; |
2069 | u_int32_t m_cnt; |
2070 | |
2071 | lck_mtx_lock_spin(&inp->input_lck); |
2072 | |
2073 | /* Wait until there is work to be done */ |
2074 | while (!(inp->input_waiting & ~DLIL_INPUT_RUNNING)) { |
2075 | inp->input_waiting &= ~DLIL_INPUT_RUNNING; |
2076 | (void) msleep(&inp->input_waiting, &inp->input_lck, |
2077 | (PZERO - 1) | PSPIN, inp->input_name, NULL); |
2078 | } |
2079 | |
2080 | inp->input_waiting |= DLIL_INPUT_RUNNING; |
2081 | inp->input_waiting &= ~DLIL_INPUT_WAITING; |
2082 | |
2083 | /* |
2084 | * Protocol registration and injection must always use |
2085 | * the main input thread; in theory the latter can utilize |
2086 | * the corresponding input thread where the packet arrived |
2087 | * on, but that requires our knowing the interface in advance |
2088 | * (and the benefits might not worth the trouble.) |
2089 | */ |
2090 | VERIFY(!(inp->input_waiting & |
2091 | (DLIL_PROTO_WAITING|DLIL_PROTO_REGISTER))); |
2092 | |
2093 | /* Packets for this interface */ |
2094 | m_cnt = qlen(&inp->rcvq_pkts); |
2095 | m = _getq_all(&inp->rcvq_pkts, NULL, NULL, NULL); |
2096 | |
2097 | if (inp->input_waiting & DLIL_INPUT_TERMINATE) { |
2098 | lck_mtx_unlock(&inp->input_lck); |
2099 | |
2100 | /* Free up pending packets */ |
2101 | if (m != NULL) |
2102 | mbuf_freem_list(m); |
2103 | |
2104 | dlil_terminate_input_thread(inp); |
2105 | /* NOTREACHED */ |
2106 | return; |
2107 | } |
2108 | |
2109 | inp->wtot = 0; |
2110 | |
2111 | dlil_input_stats_sync(ifp, inp); |
2112 | |
2113 | lck_mtx_unlock(&inp->input_lck); |
2114 | |
2115 | /* |
2116 | * NOTE warning %%% attention !!!! |
2117 | * We should think about putting some thread starvation |
2118 | * safeguards if we deal with long chains of packets. |
2119 | */ |
2120 | if (m != NULL) |
2121 | dlil_input_packet_list_extended(NULL, m, |
2122 | m_cnt, inp->mode); |
2123 | } |
2124 | |
2125 | /* NOTREACHED */ |
2126 | VERIFY(0); /* we should never get here */ |
2127 | } |
2128 | |
2129 | /* |
2130 | * Input thread for interfaces with opportunistic polling input model. |
2131 | */ |
2132 | static void |
2133 | dlil_rxpoll_input_thread_func(void *v, wait_result_t w) |
2134 | { |
2135 | #pragma unused(w) |
2136 | struct dlil_threading_info *inp = v; |
2137 | struct ifnet *ifp = inp->ifp; |
2138 | struct timespec ts; |
2139 | |
2140 | VERIFY(inp != dlil_main_input_thread); |
2141 | VERIFY(ifp != NULL && (ifp->if_eflags & IFEF_RXPOLL)); |
2142 | |
2143 | while (1) { |
2144 | struct mbuf *m = NULL; |
2145 | u_int32_t m_cnt, m_size, poll_req = 0; |
2146 | ifnet_model_t mode; |
2147 | struct timespec now, delta; |
2148 | u_int64_t ival; |
2149 | |
2150 | lck_mtx_lock_spin(&inp->input_lck); |
2151 | |
2152 | if ((ival = inp->rxpoll_ival) < IF_RXPOLL_INTERVALTIME_MIN) |
2153 | ival = IF_RXPOLL_INTERVALTIME_MIN; |
2154 | |
2155 | /* Link parameters changed? */ |
2156 | if (ifp->if_poll_update != 0) { |
2157 | ifp->if_poll_update = 0; |
2158 | (void) dlil_rxpoll_set_params(ifp, NULL, TRUE); |
2159 | } |
2160 | |
2161 | /* Current operating mode */ |
2162 | mode = inp->mode; |
2163 | |
2164 | /* Wait until there is work to be done */ |
2165 | while (!(inp->input_waiting & ~DLIL_INPUT_RUNNING)) { |
2166 | inp->input_waiting &= ~DLIL_INPUT_RUNNING; |
2167 | (void) msleep(&inp->input_waiting, &inp->input_lck, |
2168 | (PZERO - 1) | PSPIN, inp->input_name, NULL); |
2169 | } |
2170 | |
2171 | inp->input_waiting |= DLIL_INPUT_RUNNING; |
2172 | inp->input_waiting &= ~DLIL_INPUT_WAITING; |
2173 | |
2174 | /* |
2175 | * Protocol registration and injection must always use |
2176 | * the main input thread; in theory the latter can utilize |
2177 | * the corresponding input thread where the packet arrived |
2178 | * on, but that requires our knowing the interface in advance |
2179 | * (and the benefits might not worth the trouble.) |
2180 | */ |
2181 | VERIFY(!(inp->input_waiting & |
2182 | (DLIL_PROTO_WAITING|DLIL_PROTO_REGISTER))); |
2183 | |
2184 | if (inp->input_waiting & DLIL_INPUT_TERMINATE) { |
2185 | /* Free up pending packets */ |
2186 | lck_mtx_convert_spin(&inp->input_lck); |
2187 | _flushq(&inp->rcvq_pkts); |
2188 | if (inp->input_mit_tcall != NULL) { |
2189 | if (thread_call_isactive(inp->input_mit_tcall)) |
2190 | thread_call_cancel(inp->input_mit_tcall); |
2191 | } |
2192 | lck_mtx_unlock(&inp->input_lck); |
2193 | |
2194 | dlil_terminate_input_thread(inp); |
2195 | /* NOTREACHED */ |
2196 | return; |
2197 | } |
2198 | |
2199 | /* Total count of all packets */ |
2200 | m_cnt = qlen(&inp->rcvq_pkts); |
2201 | |
2202 | /* Total bytes of all packets */ |
2203 | m_size = qsize(&inp->rcvq_pkts); |
2204 | |
2205 | /* Packets for this interface */ |
2206 | m = _getq_all(&inp->rcvq_pkts, NULL, NULL, NULL); |
2207 | VERIFY(m != NULL || m_cnt == 0); |
2208 | |
2209 | nanouptime(&now); |
2210 | if (!net_timerisset(&inp->sample_lasttime)) |
2211 | *(&inp->sample_lasttime) = *(&now); |
2212 | |
2213 | net_timersub(&now, &inp->sample_lasttime, &delta); |
2214 | if (if_rxpoll && net_timerisset(&inp->sample_holdtime)) { |
2215 | u_int32_t ptot, btot; |
2216 | |
2217 | /* Accumulate statistics for current sampling */ |
2218 | PKTCNTR_ADD(&inp->sstats, m_cnt, m_size); |
2219 | |
2220 | if (net_timercmp(&delta, &inp->sample_holdtime, <)) |
2221 | goto skip; |
2222 | |
2223 | *(&inp->sample_lasttime) = *(&now); |
2224 | |
2225 | /* Calculate min/max of inbound bytes */ |
2226 | btot = (u_int32_t)inp->sstats.bytes; |
2227 | if (inp->rxpoll_bmin == 0 || inp->rxpoll_bmin > btot) |
2228 | inp->rxpoll_bmin = btot; |
2229 | if (btot > inp->rxpoll_bmax) |
2230 | inp->rxpoll_bmax = btot; |
2231 | |
2232 | /* Calculate EWMA of inbound bytes */ |
2233 | DLIL_EWMA(inp->rxpoll_bavg, btot, if_rxpoll_decay); |
2234 | |
2235 | /* Calculate min/max of inbound packets */ |
2236 | ptot = (u_int32_t)inp->sstats.packets; |
2237 | if (inp->rxpoll_pmin == 0 || inp->rxpoll_pmin > ptot) |
2238 | inp->rxpoll_pmin = ptot; |
2239 | if (ptot > inp->rxpoll_pmax) |
2240 | inp->rxpoll_pmax = ptot; |
2241 | |
2242 | /* Calculate EWMA of inbound packets */ |
2243 | DLIL_EWMA(inp->rxpoll_pavg, ptot, if_rxpoll_decay); |
2244 | |
2245 | /* Reset sampling statistics */ |
2246 | PKTCNTR_CLEAR(&inp->sstats); |
2247 | |
2248 | /* Calculate EWMA of wakeup requests */ |
2249 | DLIL_EWMA(inp->rxpoll_wavg, inp->wtot, if_rxpoll_decay); |
2250 | inp->wtot = 0; |
2251 | |
2252 | if (dlil_verbose) { |
2253 | if (!net_timerisset(&inp->dbg_lasttime)) |
2254 | *(&inp->dbg_lasttime) = *(&now); |
2255 | net_timersub(&now, &inp->dbg_lasttime, &delta); |
2256 | if (net_timercmp(&delta, &dlil_dbgrate, >=)) { |
2257 | *(&inp->dbg_lasttime) = *(&now); |
2258 | printf("%s: [%s] pkts avg %d max %d " |
2259 | "limits [%d/%d], wreq avg %d " |
2260 | "limits [%d/%d], bytes avg %d " |
2261 | "limits [%d/%d]\n" , if_name(ifp), |
2262 | (inp->mode == |
2263 | IFNET_MODEL_INPUT_POLL_ON) ? |
2264 | "ON" : "OFF" , inp->rxpoll_pavg, |
2265 | inp->rxpoll_pmax, |
2266 | inp->rxpoll_plowat, |
2267 | inp->rxpoll_phiwat, |
2268 | inp->rxpoll_wavg, |
2269 | inp->rxpoll_wlowat, |
2270 | inp->rxpoll_whiwat, |
2271 | inp->rxpoll_bavg, |
2272 | inp->rxpoll_blowat, |
2273 | inp->rxpoll_bhiwat); |
2274 | } |
2275 | } |
2276 | |
2277 | /* Perform mode transition, if necessary */ |
2278 | if (!net_timerisset(&inp->mode_lasttime)) |
2279 | *(&inp->mode_lasttime) = *(&now); |
2280 | |
2281 | net_timersub(&now, &inp->mode_lasttime, &delta); |
2282 | if (net_timercmp(&delta, &inp->mode_holdtime, <)) |
2283 | goto skip; |
2284 | |
2285 | if (inp->rxpoll_pavg <= inp->rxpoll_plowat && |
2286 | inp->rxpoll_bavg <= inp->rxpoll_blowat && |
2287 | inp->mode != IFNET_MODEL_INPUT_POLL_OFF) { |
2288 | mode = IFNET_MODEL_INPUT_POLL_OFF; |
2289 | } else if (inp->rxpoll_pavg >= inp->rxpoll_phiwat && |
2290 | (inp->rxpoll_bavg >= inp->rxpoll_bhiwat || |
2291 | inp->rxpoll_wavg >= inp->rxpoll_whiwat) && |
2292 | inp->mode != IFNET_MODEL_INPUT_POLL_ON) { |
2293 | mode = IFNET_MODEL_INPUT_POLL_ON; |
2294 | } |
2295 | |
2296 | if (mode != inp->mode) { |
2297 | inp->mode = mode; |
2298 | *(&inp->mode_lasttime) = *(&now); |
2299 | poll_req++; |
2300 | } |
2301 | } |
2302 | skip: |
2303 | dlil_input_stats_sync(ifp, inp); |
2304 | |
2305 | lck_mtx_unlock(&inp->input_lck); |
2306 | |
2307 | /* |
2308 | * If there's a mode change and interface is still attached, |
2309 | * perform a downcall to the driver for the new mode. Also |
2310 | * hold an IO refcnt on the interface to prevent it from |
2311 | * being detached (will be release below.) |
2312 | */ |
2313 | if (poll_req != 0 && ifnet_is_attached(ifp, 1)) { |
2314 | struct ifnet_model_params p = { mode, { 0 } }; |
2315 | errno_t err; |
2316 | |
2317 | if (dlil_verbose) { |
2318 | printf("%s: polling is now %s, " |
2319 | "pkts avg %d max %d limits [%d/%d], " |
2320 | "wreq avg %d limits [%d/%d], " |
2321 | "bytes avg %d limits [%d/%d]\n" , |
2322 | if_name(ifp), |
2323 | (mode == IFNET_MODEL_INPUT_POLL_ON) ? |
2324 | "ON" : "OFF" , inp->rxpoll_pavg, |
2325 | inp->rxpoll_pmax, inp->rxpoll_plowat, |
2326 | inp->rxpoll_phiwat, inp->rxpoll_wavg, |
2327 | inp->rxpoll_wlowat, inp->rxpoll_whiwat, |
2328 | inp->rxpoll_bavg, inp->rxpoll_blowat, |
2329 | inp->rxpoll_bhiwat); |
2330 | } |
2331 | |
2332 | if ((err = ((*ifp->if_input_ctl)(ifp, |
2333 | IFNET_CTL_SET_INPUT_MODEL, sizeof (p), &p))) != 0) { |
2334 | printf("%s: error setting polling mode " |
2335 | "to %s (%d)\n" , if_name(ifp), |
2336 | (mode == IFNET_MODEL_INPUT_POLL_ON) ? |
2337 | "ON" : "OFF" , err); |
2338 | } |
2339 | |
2340 | switch (mode) { |
2341 | case IFNET_MODEL_INPUT_POLL_OFF: |
2342 | ifnet_set_poll_cycle(ifp, NULL); |
2343 | inp->rxpoll_offreq++; |
2344 | if (err != 0) |
2345 | inp->rxpoll_offerr++; |
2346 | break; |
2347 | |
2348 | case IFNET_MODEL_INPUT_POLL_ON: |
2349 | net_nsectimer(&ival, &ts); |
2350 | ifnet_set_poll_cycle(ifp, &ts); |
2351 | ifnet_poll(ifp); |
2352 | inp->rxpoll_onreq++; |
2353 | if (err != 0) |
2354 | inp->rxpoll_onerr++; |
2355 | break; |
2356 | |
2357 | default: |
2358 | VERIFY(0); |
2359 | /* NOTREACHED */ |
2360 | } |
2361 | |
2362 | /* Release the IO refcnt */ |
2363 | ifnet_decr_iorefcnt(ifp); |
2364 | } |
2365 | |
2366 | /* |
2367 | * NOTE warning %%% attention !!!! |
2368 | * We should think about putting some thread starvation |
2369 | * safeguards if we deal with long chains of packets. |
2370 | */ |
2371 | if (m != NULL) |
2372 | dlil_input_packet_list_extended(NULL, m, m_cnt, mode); |
2373 | } |
2374 | |
2375 | /* NOTREACHED */ |
2376 | VERIFY(0); /* we should never get here */ |
2377 | } |
2378 | |
2379 | /* |
2380 | * Must be called on an attached ifnet (caller is expected to check.) |
2381 | * Caller may pass NULL for poll parameters to indicate "auto-tuning." |
2382 | */ |
2383 | errno_t |
2384 | dlil_rxpoll_set_params(struct ifnet *ifp, struct ifnet_poll_params *p, |
2385 | boolean_t locked) |
2386 | { |
2387 | struct dlil_threading_info *inp; |
2388 | u_int64_t sample_holdtime, inbw; |
2389 | |
2390 | VERIFY(ifp != NULL); |
2391 | if (!(ifp->if_eflags & IFEF_RXPOLL) || (inp = ifp->if_inp) == NULL) |
2392 | return (ENXIO); |
2393 | |
2394 | if (p != NULL) { |
2395 | if ((p->packets_lowat == 0 && p->packets_hiwat != 0) || |
2396 | (p->packets_lowat != 0 && p->packets_hiwat == 0)) |
2397 | return (EINVAL); |
2398 | if (p->packets_lowat != 0 && /* hiwat must be non-zero */ |
2399 | p->packets_lowat >= p->packets_hiwat) |
2400 | return (EINVAL); |
2401 | if ((p->bytes_lowat == 0 && p->bytes_hiwat != 0) || |
2402 | (p->bytes_lowat != 0 && p->bytes_hiwat == 0)) |
2403 | return (EINVAL); |
2404 | if (p->bytes_lowat != 0 && /* hiwat must be non-zero */ |
2405 | p->bytes_lowat >= p->bytes_hiwat) |
2406 | return (EINVAL); |
2407 | if (p->interval_time != 0 && |
2408 | p->interval_time < IF_RXPOLL_INTERVALTIME_MIN) |
2409 | p->interval_time = IF_RXPOLL_INTERVALTIME_MIN; |
2410 | } |
2411 | |
2412 | if (!locked) |
2413 | lck_mtx_lock(&inp->input_lck); |
2414 | |
2415 | LCK_MTX_ASSERT(&inp->input_lck, LCK_MTX_ASSERT_OWNED); |
2416 | |
2417 | /* |
2418 | * Normally, we'd reset the parameters to the auto-tuned values |
2419 | * if the the input thread detects a change in link rate. If the |
2420 | * driver provides its own parameters right after a link rate |
2421 | * changes, but before the input thread gets to run, we want to |
2422 | * make sure to keep the driver's values. Clearing if_poll_update |
2423 | * will achieve that. |
2424 | */ |
2425 | if (p != NULL && !locked && ifp->if_poll_update != 0) |
2426 | ifp->if_poll_update = 0; |
2427 | |
2428 | if ((inbw = ifnet_input_linkrate(ifp)) == 0 && p == NULL) { |
2429 | sample_holdtime = 0; /* polling is disabled */ |
2430 | inp->rxpoll_wlowat = inp->rxpoll_plowat = |
2431 | inp->rxpoll_blowat = 0; |
2432 | inp->rxpoll_whiwat = inp->rxpoll_phiwat = |
2433 | inp->rxpoll_bhiwat = (u_int32_t)-1; |
2434 | inp->rxpoll_plim = 0; |
2435 | inp->rxpoll_ival = IF_RXPOLL_INTERVALTIME_MIN; |
2436 | } else { |
2437 | u_int32_t plowat, phiwat, blowat, bhiwat, plim; |
2438 | u_int64_t ival; |
2439 | unsigned int n, i; |
2440 | |
2441 | for (n = 0, i = 0; rxpoll_tbl[i].speed != 0; i++) { |
2442 | if (inbw < rxpoll_tbl[i].speed) |
2443 | break; |
2444 | n = i; |
2445 | } |
2446 | /* auto-tune if caller didn't specify a value */ |
2447 | plowat = ((p == NULL || p->packets_lowat == 0) ? |
2448 | rxpoll_tbl[n].plowat : p->packets_lowat); |
2449 | phiwat = ((p == NULL || p->packets_hiwat == 0) ? |
2450 | rxpoll_tbl[n].phiwat : p->packets_hiwat); |
2451 | blowat = ((p == NULL || p->bytes_lowat == 0) ? |
2452 | rxpoll_tbl[n].blowat : p->bytes_lowat); |
2453 | bhiwat = ((p == NULL || p->bytes_hiwat == 0) ? |
2454 | rxpoll_tbl[n].bhiwat : p->bytes_hiwat); |
2455 | plim = ((p == NULL || p->packets_limit == 0) ? |
2456 | if_rxpoll_max : p->packets_limit); |
2457 | ival = ((p == NULL || p->interval_time == 0) ? |
2458 | if_rxpoll_interval_time : p->interval_time); |
2459 | |
2460 | VERIFY(plowat != 0 && phiwat != 0); |
2461 | VERIFY(blowat != 0 && bhiwat != 0); |
2462 | VERIFY(ival >= IF_RXPOLL_INTERVALTIME_MIN); |
2463 | |
2464 | sample_holdtime = if_rxpoll_sample_holdtime; |
2465 | inp->rxpoll_wlowat = if_rxpoll_wlowat; |
2466 | inp->rxpoll_whiwat = if_rxpoll_whiwat; |
2467 | inp->rxpoll_plowat = plowat; |
2468 | inp->rxpoll_phiwat = phiwat; |
2469 | inp->rxpoll_blowat = blowat; |
2470 | inp->rxpoll_bhiwat = bhiwat; |
2471 | inp->rxpoll_plim = plim; |
2472 | inp->rxpoll_ival = ival; |
2473 | } |
2474 | |
2475 | net_nsectimer(&if_rxpoll_mode_holdtime, &inp->mode_holdtime); |
2476 | net_nsectimer(&sample_holdtime, &inp->sample_holdtime); |
2477 | |
2478 | if (dlil_verbose) { |
2479 | printf("%s: speed %llu bps, sample per %llu nsec, " |
2480 | "poll interval %llu nsec, pkts per poll %u, " |
2481 | "pkt limits [%u/%u], wreq limits [%u/%u], " |
2482 | "bytes limits [%u/%u]\n" , if_name(ifp), |
2483 | inbw, sample_holdtime, inp->rxpoll_ival, inp->rxpoll_plim, |
2484 | inp->rxpoll_plowat, inp->rxpoll_phiwat, inp->rxpoll_wlowat, |
2485 | inp->rxpoll_whiwat, inp->rxpoll_blowat, inp->rxpoll_bhiwat); |
2486 | } |
2487 | |
2488 | if (!locked) |
2489 | lck_mtx_unlock(&inp->input_lck); |
2490 | |
2491 | return (0); |
2492 | } |
2493 | |
2494 | /* |
2495 | * Must be called on an attached ifnet (caller is expected to check.) |
2496 | */ |
2497 | errno_t |
2498 | dlil_rxpoll_get_params(struct ifnet *ifp, struct ifnet_poll_params *p) |
2499 | { |
2500 | struct dlil_threading_info *inp; |
2501 | |
2502 | VERIFY(ifp != NULL && p != NULL); |
2503 | if (!(ifp->if_eflags & IFEF_RXPOLL) || (inp = ifp->if_inp) == NULL) |
2504 | return (ENXIO); |
2505 | |
2506 | bzero(p, sizeof (*p)); |
2507 | |
2508 | lck_mtx_lock(&inp->input_lck); |
2509 | p->packets_limit = inp->rxpoll_plim; |
2510 | p->packets_lowat = inp->rxpoll_plowat; |
2511 | p->packets_hiwat = inp->rxpoll_phiwat; |
2512 | p->bytes_lowat = inp->rxpoll_blowat; |
2513 | p->bytes_hiwat = inp->rxpoll_bhiwat; |
2514 | p->interval_time = inp->rxpoll_ival; |
2515 | lck_mtx_unlock(&inp->input_lck); |
2516 | |
2517 | return (0); |
2518 | } |
2519 | |
2520 | errno_t |
2521 | ifnet_input(struct ifnet *ifp, struct mbuf *m_head, |
2522 | const struct ifnet_stat_increment_param *s) |
2523 | { |
2524 | return (ifnet_input_common(ifp, m_head, NULL, s, FALSE, FALSE)); |
2525 | } |
2526 | |
2527 | errno_t |
2528 | ifnet_input_extended(struct ifnet *ifp, struct mbuf *m_head, |
2529 | struct mbuf *m_tail, const struct ifnet_stat_increment_param *s) |
2530 | { |
2531 | return (ifnet_input_common(ifp, m_head, m_tail, s, TRUE, FALSE)); |
2532 | } |
2533 | |
2534 | static errno_t |
2535 | ifnet_input_common(struct ifnet *ifp, struct mbuf *m_head, struct mbuf *m_tail, |
2536 | const struct ifnet_stat_increment_param *s, boolean_t ext, boolean_t poll) |
2537 | { |
2538 | dlil_input_func input_func; |
2539 | struct ifnet_stat_increment_param _s; |
2540 | u_int32_t m_cnt = 0, m_size = 0; |
2541 | struct mbuf *last; |
2542 | errno_t err = 0; |
2543 | |
2544 | if ((m_head == NULL && !poll) || (s == NULL && ext)) { |
2545 | if (m_head != NULL) |
2546 | mbuf_freem_list(m_head); |
2547 | return (EINVAL); |
2548 | } |
2549 | |
2550 | VERIFY(m_head != NULL || (s == NULL && m_tail == NULL && !ext && poll)); |
2551 | VERIFY(m_tail == NULL || ext); |
2552 | VERIFY(s != NULL || !ext); |
2553 | |
2554 | /* |
2555 | * Drop the packet(s) if the parameters are invalid, or if the |
2556 | * interface is no longer attached; else hold an IO refcnt to |
2557 | * prevent it from being detached (will be released below.) |
2558 | */ |
2559 | if (ifp == NULL || (ifp != lo_ifp && !ifnet_is_attached(ifp, 1))) { |
2560 | if (m_head != NULL) |
2561 | mbuf_freem_list(m_head); |
2562 | return (EINVAL); |
2563 | } |
2564 | |
2565 | input_func = ifp->if_input_dlil; |
2566 | VERIFY(input_func != NULL); |
2567 | |
2568 | if (m_tail == NULL) { |
2569 | last = m_head; |
2570 | while (m_head != NULL) { |
2571 | #if IFNET_INPUT_SANITY_CHK |
2572 | if (dlil_input_sanity_check != 0) |
2573 | DLIL_INPUT_CHECK(last, ifp); |
2574 | #endif /* IFNET_INPUT_SANITY_CHK */ |
2575 | m_cnt++; |
2576 | m_size += m_length(last); |
2577 | if (mbuf_nextpkt(last) == NULL) |
2578 | break; |
2579 | last = mbuf_nextpkt(last); |
2580 | } |
2581 | m_tail = last; |
2582 | } else { |
2583 | #if IFNET_INPUT_SANITY_CHK |
2584 | if (dlil_input_sanity_check != 0) { |
2585 | last = m_head; |
2586 | while (1) { |
2587 | DLIL_INPUT_CHECK(last, ifp); |
2588 | m_cnt++; |
2589 | m_size += m_length(last); |
2590 | if (mbuf_nextpkt(last) == NULL) |
2591 | break; |
2592 | last = mbuf_nextpkt(last); |
2593 | } |
2594 | } else { |
2595 | m_cnt = s->packets_in; |
2596 | m_size = s->bytes_in; |
2597 | last = m_tail; |
2598 | } |
2599 | #else |
2600 | m_cnt = s->packets_in; |
2601 | m_size = s->bytes_in; |
2602 | last = m_tail; |
2603 | #endif /* IFNET_INPUT_SANITY_CHK */ |
2604 | } |
2605 | |
2606 | if (last != m_tail) { |
2607 | panic_plain("%s: invalid input packet chain for %s, " |
2608 | "tail mbuf %p instead of %p\n" , __func__, if_name(ifp), |
2609 | m_tail, last); |
2610 | } |
2611 | |
2612 | /* |
2613 | * Assert packet count only for the extended variant, for backwards |
2614 | * compatibility, since this came directly from the device driver. |
2615 | * Relax this assertion for input bytes, as the driver may have |
2616 | * included the link-layer headers in the computation; hence |
2617 | * m_size is just an approximation. |
2618 | */ |
2619 | if (ext && s->packets_in != m_cnt) { |
2620 | panic_plain("%s: input packet count mismatch for %s, " |
2621 | "%d instead of %d\n" , __func__, if_name(ifp), |
2622 | s->packets_in, m_cnt); |
2623 | } |
2624 | |
2625 | if (s == NULL) { |
2626 | bzero(&_s, sizeof (_s)); |
2627 | s = &_s; |
2628 | } else { |
2629 | _s = *s; |
2630 | } |
2631 | _s.packets_in = m_cnt; |
2632 | _s.bytes_in = m_size; |
2633 | |
2634 | err = (*input_func)(ifp, m_head, m_tail, s, poll, current_thread()); |
2635 | |
2636 | if (ifp != lo_ifp) { |
2637 | /* Release the IO refcnt */ |
2638 | ifnet_decr_iorefcnt(ifp); |
2639 | } |
2640 | |
2641 | return (err); |
2642 | } |
2643 | |
2644 | |
2645 | errno_t |
2646 | dlil_output_handler(struct ifnet *ifp, struct mbuf *m) |
2647 | { |
2648 | return (ifp->if_output(ifp, m)); |
2649 | } |
2650 | |
2651 | errno_t |
2652 | dlil_input_handler(struct ifnet *ifp, struct mbuf *m_head, |
2653 | struct mbuf *m_tail, const struct ifnet_stat_increment_param *s, |
2654 | boolean_t poll, struct thread *tp) |
2655 | { |
2656 | struct dlil_threading_info *inp; |
2657 | u_int32_t m_cnt = s->packets_in; |
2658 | u_int32_t m_size = s->bytes_in; |
2659 | |
2660 | if ((inp = ifp->if_inp) == NULL) |
2661 | inp = dlil_main_input_thread; |
2662 | |
2663 | /* |
2664 | * If there is a matching DLIL input thread associated with an |
2665 | * affinity set, associate this thread with the same set. We |
2666 | * will only do this once. |
2667 | */ |
2668 | lck_mtx_lock_spin(&inp->input_lck); |
2669 | if (inp != dlil_main_input_thread && inp->net_affinity && tp != NULL && |
2670 | ((!poll && inp->wloop_thr == THREAD_NULL) || |
2671 | (poll && inp->poll_thr == THREAD_NULL))) { |
2672 | u_int32_t tag = inp->tag; |
2673 | |
2674 | if (poll) { |
2675 | VERIFY(inp->poll_thr == THREAD_NULL); |
2676 | inp->poll_thr = tp; |
2677 | } else { |
2678 | VERIFY(inp->wloop_thr == THREAD_NULL); |
2679 | inp->wloop_thr = tp; |
2680 | } |
2681 | lck_mtx_unlock(&inp->input_lck); |
2682 | |
2683 | /* Associate the current thread with the new affinity tag */ |
2684 | (void) dlil_affinity_set(tp, tag); |
2685 | |
2686 | /* |
2687 | * Take a reference on the current thread; during detach, |
2688 | * we will need to refer to it in order to tear down its |
2689 | * affinity. |
2690 | */ |
2691 | thread_reference(tp); |
2692 | lck_mtx_lock_spin(&inp->input_lck); |
2693 | } |
2694 | |
2695 | VERIFY(m_head != NULL || (m_tail == NULL && m_cnt == 0)); |
2696 | |
2697 | /* |
2698 | * Because of loopbacked multicast we cannot stuff the ifp in |
2699 | * the rcvif of the packet header: loopback (lo0) packets use a |
2700 | * dedicated list so that we can later associate them with lo_ifp |
2701 | * on their way up the stack. Packets for other interfaces without |
2702 | * dedicated input threads go to the regular list. |
2703 | */ |
2704 | if (m_head != NULL) { |
2705 | if (inp == dlil_main_input_thread && ifp == lo_ifp) { |
2706 | struct dlil_main_threading_info *inpm = |
2707 | (struct dlil_main_threading_info *)inp; |
2708 | _addq_multi(&inpm->lo_rcvq_pkts, m_head, m_tail, |
2709 | m_cnt, m_size); |
2710 | } else { |
2711 | _addq_multi(&inp->rcvq_pkts, m_head, m_tail, |
2712 | m_cnt, m_size); |
2713 | } |
2714 | } |
2715 | |
2716 | #if IFNET_INPUT_SANITY_CHK |
2717 | if (dlil_input_sanity_check != 0) { |
2718 | u_int32_t count; |
2719 | struct mbuf *m0; |
2720 | |
2721 | for (m0 = m_head, count = 0; m0; m0 = mbuf_nextpkt(m0)) |
2722 | count++; |
2723 | |
2724 | if (count != m_cnt) { |
2725 | panic_plain("%s: invalid packet count %d " |
2726 | "(expected %d)\n" , if_name(ifp), |
2727 | count, m_cnt); |
2728 | /* NOTREACHED */ |
2729 | } |
2730 | |
2731 | inp->input_mbuf_cnt += m_cnt; |
2732 | } |
2733 | #endif /* IFNET_INPUT_SANITY_CHK */ |
2734 | |
2735 | dlil_input_stats_add(s, inp, poll); |
2736 | /* |
2737 | * If we're using the main input thread, synchronize the |
2738 | * stats now since we have the interface context. All |
2739 | * other cases involving dedicated input threads will |
2740 | * have their stats synchronized there. |
2741 | */ |
2742 | if (inp == dlil_main_input_thread) |
2743 | dlil_input_stats_sync(ifp, inp); |
2744 | |
2745 | if (inp->input_mit_tcall && |
2746 | qlen(&inp->rcvq_pkts) >= dlil_rcv_mit_pkts_min && |
2747 | qlen(&inp->rcvq_pkts) < dlil_rcv_mit_pkts_max && |
2748 | (ifp->if_family == IFNET_FAMILY_ETHERNET || |
2749 | ifp->if_type == IFT_CELLULAR) |
2750 | ) { |
2751 | if (!thread_call_isactive(inp->input_mit_tcall)) { |
2752 | uint64_t deadline; |
2753 | clock_interval_to_deadline(dlil_rcv_mit_interval, |
2754 | 1, &deadline); |
2755 | (void) thread_call_enter_delayed( |
2756 | inp->input_mit_tcall, deadline); |
2757 | } |
2758 | } else { |
2759 | inp->input_waiting |= DLIL_INPUT_WAITING; |
2760 | if (!(inp->input_waiting & DLIL_INPUT_RUNNING)) { |
2761 | inp->wtot++; |
2762 | wakeup_one((caddr_t)&inp->input_waiting); |
2763 | } |
2764 | } |
2765 | lck_mtx_unlock(&inp->input_lck); |
2766 | |
2767 | return (0); |
2768 | } |
2769 | |
2770 | |
2771 | static void |
2772 | ifnet_start_common(struct ifnet *ifp, boolean_t resetfc) |
2773 | { |
2774 | if (!(ifp->if_eflags & IFEF_TXSTART)) |
2775 | return; |
2776 | /* |
2777 | * If the starter thread is inactive, signal it to do work, |
2778 | * unless the interface is being flow controlled from below, |
2779 | * e.g. a virtual interface being flow controlled by a real |
2780 | * network interface beneath it, or it's been disabled via |
2781 | * a call to ifnet_disable_output(). |
2782 | */ |
2783 | lck_mtx_lock_spin(&ifp->if_start_lock); |
2784 | if (resetfc) { |
2785 | ifp->if_start_flags &= ~IFSF_FLOW_CONTROLLED; |
2786 | } else if (ifp->if_start_flags & IFSF_FLOW_CONTROLLED) { |
2787 | lck_mtx_unlock(&ifp->if_start_lock); |
2788 | return; |
2789 | } |
2790 | ifp->if_start_req++; |
2791 | if (!ifp->if_start_active && ifp->if_start_thread != THREAD_NULL && |
2792 | (resetfc || !(ifp->if_eflags & IFEF_ENQUEUE_MULTI) || |
2793 | IFCQ_LEN(&ifp->if_snd) >= ifp->if_start_delay_qlen || |
2794 | ifp->if_start_delayed == 0)) { |
2795 | (void) thread_wakeup_thread((caddr_t)&ifp->if_start_thread, |
2796 | ifp->if_start_thread); |
2797 | } |
2798 | lck_mtx_unlock(&ifp->if_start_lock); |
2799 | } |
2800 | |
2801 | void |
2802 | ifnet_start(struct ifnet *ifp) |
2803 | { |
2804 | ifnet_start_common(ifp, FALSE); |
2805 | } |
2806 | |
2807 | static void |
2808 | ifnet_start_thread_fn(void *v, wait_result_t w) |
2809 | { |
2810 | #pragma unused(w) |
2811 | struct ifnet *ifp = v; |
2812 | char ifname[IFNAMSIZ + 1]; |
2813 | char thread_name[MAXTHREADNAMESIZE]; |
2814 | struct timespec *ts = NULL; |
2815 | struct ifclassq *ifq = &ifp->if_snd; |
2816 | struct timespec delay_start_ts; |
2817 | |
2818 | /* Construct the name for this thread, and then apply it. */ |
2819 | bzero(thread_name, sizeof(thread_name)); |
2820 | (void) snprintf(thread_name, sizeof (thread_name), |
2821 | "ifnet_start_%s" , ifp->if_xname); |
2822 | thread_set_thread_name(ifp->if_start_thread, thread_name); |
2823 | |
2824 | /* |
2825 | * Treat the dedicated starter thread for lo0 as equivalent to |
2826 | * the driver workloop thread; if net_affinity is enabled for |
2827 | * the main input thread, associate this starter thread to it |
2828 | * by binding them with the same affinity tag. This is done |
2829 | * only once (as we only have one lo_ifp which never goes away.) |
2830 | */ |
2831 | if (ifp == lo_ifp) { |
2832 | struct dlil_threading_info *inp = dlil_main_input_thread; |
2833 | struct thread *tp = current_thread(); |
2834 | |
2835 | lck_mtx_lock(&inp->input_lck); |
2836 | if (inp->net_affinity) { |
2837 | u_int32_t tag = inp->tag; |
2838 | |
2839 | VERIFY(inp->wloop_thr == THREAD_NULL); |
2840 | VERIFY(inp->poll_thr == THREAD_NULL); |
2841 | inp->wloop_thr = tp; |
2842 | lck_mtx_unlock(&inp->input_lck); |
2843 | |
2844 | /* Associate this thread with the affinity tag */ |
2845 | (void) dlil_affinity_set(tp, tag); |
2846 | } else { |
2847 | lck_mtx_unlock(&inp->input_lck); |
2848 | } |
2849 | } |
2850 | |
2851 | (void) snprintf(ifname, sizeof (ifname), "%s_starter" , if_name(ifp)); |
2852 | |
2853 | lck_mtx_lock_spin(&ifp->if_start_lock); |
2854 | |
2855 | for (;;) { |
2856 | if (ifp->if_start_thread != NULL) { |
2857 | (void) msleep(&ifp->if_start_thread, |
2858 | &ifp->if_start_lock, |
2859 | (PZERO - 1) | PSPIN, ifname, ts); |
2860 | } |
2861 | /* interface is detached? */ |
2862 | if (ifp->if_start_thread == THREAD_NULL) { |
2863 | ifnet_set_start_cycle(ifp, NULL); |
2864 | lck_mtx_unlock(&ifp->if_start_lock); |
2865 | ifnet_purge(ifp); |
2866 | |
2867 | if (dlil_verbose) { |
2868 | printf("%s: starter thread terminated\n" , |
2869 | if_name(ifp)); |
2870 | } |
2871 | |
2872 | /* for the extra refcnt from kernel_thread_start() */ |
2873 | thread_deallocate(current_thread()); |
2874 | /* this is the end */ |
2875 | thread_terminate(current_thread()); |
2876 | /* NOTREACHED */ |
2877 | return; |
2878 | } |
2879 | |
2880 | ifp->if_start_active = 1; |
2881 | |
2882 | for (;;) { |
2883 | u_int32_t req = ifp->if_start_req; |
2884 | if (!IFCQ_IS_EMPTY(ifq) && |
2885 | (ifp->if_eflags & IFEF_ENQUEUE_MULTI) && |
2886 | ifp->if_start_delayed == 0 && |
2887 | IFCQ_LEN(ifq) < ifp->if_start_delay_qlen && |
2888 | (ifp->if_eflags & IFEF_DELAY_START)) { |
2889 | ifp->if_start_delayed = 1; |
2890 | ifnet_start_delayed++; |
2891 | break; |
2892 | } else { |
2893 | ifp->if_start_delayed = 0; |
2894 | } |
2895 | lck_mtx_unlock(&ifp->if_start_lock); |
2896 | |
2897 | /* |
2898 | * If no longer attached, don't call start because ifp |
2899 | * is being destroyed; else hold an IO refcnt to |
2900 | * prevent the interface from being detached (will be |
2901 | * released below.) |
2902 | */ |
2903 | if (!ifnet_is_attached(ifp, 1)) { |
2904 | lck_mtx_lock_spin(&ifp->if_start_lock); |
2905 | break; |
2906 | } |
2907 | |
2908 | /* invoke the driver's start routine */ |
2909 | ((*ifp->if_start)(ifp)); |
2910 | |
2911 | /* |
2912 | * Release the io ref count taken by ifnet_is_attached. |
2913 | */ |
2914 | ifnet_decr_iorefcnt(ifp); |
2915 | |
2916 | lck_mtx_lock_spin(&ifp->if_start_lock); |
2917 | |
2918 | /* |
2919 | * If there's no pending request or if the |
2920 | * interface has been disabled, we're done. |
2921 | */ |
2922 | if (req == ifp->if_start_req || |
2923 | (ifp->if_start_flags & IFSF_FLOW_CONTROLLED)) { |
2924 | break; |
2925 | } |
2926 | } |
2927 | |
2928 | ifp->if_start_req = 0; |
2929 | ifp->if_start_active = 0; |
2930 | |
2931 | /* |
2932 | * Wakeup N ns from now if rate-controlled by TBR, and if |
2933 | * there are still packets in the send queue which haven't |
2934 | * been dequeued so far; else sleep indefinitely (ts = NULL) |
2935 | * until ifnet_start() is called again. |
2936 | */ |
2937 | ts = ((IFCQ_TBR_IS_ENABLED(ifq) && !IFCQ_IS_EMPTY(ifq)) ? |
2938 | &ifp->if_start_cycle : NULL); |
2939 | |
2940 | if (ts == NULL && ifp->if_start_delayed == 1) { |
2941 | delay_start_ts.tv_sec = 0; |
2942 | delay_start_ts.tv_nsec = ifp->if_start_delay_timeout; |
2943 | ts = &delay_start_ts; |
2944 | } |
2945 | |
2946 | if (ts != NULL && ts->tv_sec == 0 && ts->tv_nsec == 0) |
2947 | ts = NULL; |
2948 | } |
2949 | |
2950 | /* NOTREACHED */ |
2951 | } |
2952 | |
2953 | void |
2954 | ifnet_set_start_cycle(struct ifnet *ifp, struct timespec *ts) |
2955 | { |
2956 | if (ts == NULL) |
2957 | bzero(&ifp->if_start_cycle, sizeof (ifp->if_start_cycle)); |
2958 | else |
2959 | *(&ifp->if_start_cycle) = *ts; |
2960 | |
2961 | if (ts != NULL && ts->tv_nsec != 0 && dlil_verbose) |
2962 | printf("%s: restart interval set to %lu nsec\n" , |
2963 | if_name(ifp), ts->tv_nsec); |
2964 | } |
2965 | |
2966 | static void |
2967 | ifnet_poll(struct ifnet *ifp) |
2968 | { |
2969 | /* |
2970 | * If the poller thread is inactive, signal it to do work. |
2971 | */ |
2972 | lck_mtx_lock_spin(&ifp->if_poll_lock); |
2973 | ifp->if_poll_req++; |
2974 | if (!ifp->if_poll_active && ifp->if_poll_thread != THREAD_NULL) { |
2975 | wakeup_one((caddr_t)&ifp->if_poll_thread); |
2976 | } |
2977 | lck_mtx_unlock(&ifp->if_poll_lock); |
2978 | } |
2979 | |
2980 | static void |
2981 | ifnet_poll_thread_fn(void *v, wait_result_t w) |
2982 | { |
2983 | #pragma unused(w) |
2984 | struct dlil_threading_info *inp; |
2985 | struct ifnet *ifp = v; |
2986 | char ifname[IFNAMSIZ + 1]; |
2987 | struct timespec *ts = NULL; |
2988 | struct ifnet_stat_increment_param s; |
2989 | |
2990 | snprintf(ifname, sizeof (ifname), "%s_poller" , |
2991 | if_name(ifp)); |
2992 | bzero(&s, sizeof (s)); |
2993 | |
2994 | lck_mtx_lock_spin(&ifp->if_poll_lock); |
2995 | |
2996 | inp = ifp->if_inp; |
2997 | VERIFY(inp != NULL); |
2998 | |
2999 | for (;;) { |
3000 | if (ifp->if_poll_thread != THREAD_NULL) { |
3001 | (void) msleep(&ifp->if_poll_thread, &ifp->if_poll_lock, |
3002 | (PZERO - 1) | PSPIN, ifname, ts); |
3003 | } |
3004 | |
3005 | /* interface is detached (maybe while asleep)? */ |
3006 | if (ifp->if_poll_thread == THREAD_NULL) { |
3007 | ifnet_set_poll_cycle(ifp, NULL); |
3008 | lck_mtx_unlock(&ifp->if_poll_lock); |
3009 | |
3010 | if (dlil_verbose) { |
3011 | printf("%s: poller thread terminated\n" , |
3012 | if_name(ifp)); |
3013 | } |
3014 | |
3015 | /* for the extra refcnt from kernel_thread_start() */ |
3016 | thread_deallocate(current_thread()); |
3017 | /* this is the end */ |
3018 | thread_terminate(current_thread()); |
3019 | /* NOTREACHED */ |
3020 | return; |
3021 | } |
3022 | |
3023 | ifp->if_poll_active = 1; |
3024 | for (;;) { |
3025 | struct mbuf *m_head, *m_tail; |
3026 | u_int32_t m_lim, m_cnt, m_totlen; |
3027 | u_int16_t req = ifp->if_poll_req; |
3028 | |
3029 | lck_mtx_unlock(&ifp->if_poll_lock); |
3030 | |
3031 | /* |
3032 | * If no longer attached, there's nothing to do; |
3033 | * else hold an IO refcnt to prevent the interface |
3034 | * from being detached (will be released below.) |
3035 | */ |
3036 | if (!ifnet_is_attached(ifp, 1)) { |
3037 | lck_mtx_lock_spin(&ifp->if_poll_lock); |
3038 | break; |
3039 | } |
3040 | |
3041 | m_lim = (inp->rxpoll_plim != 0) ? inp->rxpoll_plim : |
3042 | MAX((qlimit(&inp->rcvq_pkts)), |
3043 | (inp->rxpoll_phiwat << 2)); |
3044 | |
3045 | if (dlil_verbose > 1) { |
3046 | printf("%s: polling up to %d pkts, " |
3047 | "pkts avg %d max %d, wreq avg %d, " |
3048 | "bytes avg %d\n" , |
3049 | if_name(ifp), m_lim, |
3050 | inp->rxpoll_pavg, inp->rxpoll_pmax, |
3051 | inp->rxpoll_wavg, inp->rxpoll_bavg); |
3052 | } |
3053 | |
3054 | /* invoke the driver's input poll routine */ |
3055 | ((*ifp->if_input_poll)(ifp, 0, m_lim, &m_head, &m_tail, |
3056 | &m_cnt, &m_totlen)); |
3057 | |
3058 | if (m_head != NULL) { |
3059 | VERIFY(m_tail != NULL && m_cnt > 0); |
3060 | |
3061 | if (dlil_verbose > 1) { |
3062 | printf("%s: polled %d pkts, " |
3063 | "pkts avg %d max %d, wreq avg %d, " |
3064 | "bytes avg %d\n" , |
3065 | if_name(ifp), m_cnt, |
3066 | inp->rxpoll_pavg, inp->rxpoll_pmax, |
3067 | inp->rxpoll_wavg, inp->rxpoll_bavg); |
3068 | } |
3069 | |
3070 | /* stats are required for extended variant */ |
3071 | s.packets_in = m_cnt; |
3072 | s.bytes_in = m_totlen; |
3073 | |
3074 | (void) ifnet_input_common(ifp, m_head, m_tail, |
3075 | &s, TRUE, TRUE); |
3076 | } else { |
3077 | if (dlil_verbose > 1) { |
3078 | printf("%s: no packets, " |
3079 | "pkts avg %d max %d, wreq avg %d, " |
3080 | "bytes avg %d\n" , |
3081 | if_name(ifp), inp->rxpoll_pavg, |
3082 | inp->rxpoll_pmax, inp->rxpoll_wavg, |
3083 | inp->rxpoll_bavg); |
3084 | } |
3085 | |
3086 | (void) ifnet_input_common(ifp, NULL, NULL, |
3087 | NULL, FALSE, TRUE); |
3088 | } |
3089 | |
3090 | /* Release the io ref count */ |
3091 | ifnet_decr_iorefcnt(ifp); |
3092 | |
3093 | lck_mtx_lock_spin(&ifp->if_poll_lock); |
3094 | |
3095 | /* if there's no pending request, we're done */ |
3096 | if (req == ifp->if_poll_req) { |
3097 | break; |
3098 | } |
3099 | } |
3100 | ifp->if_poll_req = 0; |
3101 | ifp->if_poll_active = 0; |
3102 | |
3103 | /* |
3104 | * Wakeup N ns from now, else sleep indefinitely (ts = NULL) |
3105 | * until ifnet_poll() is called again. |
3106 | */ |
3107 | ts = &ifp->if_poll_cycle; |
3108 | if (ts->tv_sec == 0 && ts->tv_nsec == 0) |
3109 | ts = NULL; |
3110 | } |
3111 | |
3112 | /* NOTREACHED */ |
3113 | } |
3114 | |
3115 | void |
3116 | ifnet_set_poll_cycle(struct ifnet *ifp, struct timespec *ts) |
3117 | { |
3118 | if (ts == NULL) |
3119 | bzero(&ifp->if_poll_cycle, sizeof (ifp->if_poll_cycle)); |
3120 | else |
3121 | *(&ifp->if_poll_cycle) = *ts; |
3122 | |
3123 | if (ts != NULL && ts->tv_nsec != 0 && dlil_verbose) |
3124 | printf("%s: poll interval set to %lu nsec\n" , |
3125 | if_name(ifp), ts->tv_nsec); |
3126 | } |
3127 | |
3128 | void |
3129 | ifnet_purge(struct ifnet *ifp) |
3130 | { |
3131 | if (ifp != NULL && (ifp->if_eflags & IFEF_TXSTART)) |
3132 | if_qflush(ifp, 0); |
3133 | } |
3134 | |
3135 | void |
3136 | ifnet_update_sndq(struct ifclassq *ifq, cqev_t ev) |
3137 | { |
3138 | IFCQ_LOCK_ASSERT_HELD(ifq); |
3139 | |
3140 | if (!(IFCQ_IS_READY(ifq))) |
3141 | return; |
3142 | |
3143 | if (IFCQ_TBR_IS_ENABLED(ifq)) { |
3144 | struct tb_profile tb = { ifq->ifcq_tbr.tbr_rate_raw, |
3145 | ifq->ifcq_tbr.tbr_percent, 0 }; |
3146 | (void) ifclassq_tbr_set(ifq, &tb, FALSE); |
3147 | } |
3148 | |
3149 | ifclassq_update(ifq, ev); |
3150 | } |
3151 | |
3152 | void |
3153 | ifnet_update_rcv(struct ifnet *ifp, cqev_t ev) |
3154 | { |
3155 | switch (ev) { |
3156 | case CLASSQ_EV_LINK_BANDWIDTH: |
3157 | if (net_rxpoll && (ifp->if_eflags & IFEF_RXPOLL)) |
3158 | ifp->if_poll_update++; |
3159 | break; |
3160 | |
3161 | default: |
3162 | break; |
3163 | } |
3164 | } |
3165 | |
3166 | errno_t |
3167 | ifnet_set_output_sched_model(struct ifnet *ifp, u_int32_t model) |
3168 | { |
3169 | struct ifclassq *ifq; |
3170 | u_int32_t omodel; |
3171 | errno_t err; |
3172 | |
3173 | if (ifp == NULL || model >= IFNET_SCHED_MODEL_MAX) |
3174 | return (EINVAL); |
3175 | else if (!(ifp->if_eflags & IFEF_TXSTART)) |
3176 | return (ENXIO); |
3177 | |
3178 | ifq = &ifp->if_snd; |
3179 | IFCQ_LOCK(ifq); |
3180 | omodel = ifp->if_output_sched_model; |
3181 | ifp->if_output_sched_model = model; |
3182 | if ((err = ifclassq_pktsched_setup(ifq)) != 0) |
3183 | ifp->if_output_sched_model = omodel; |
3184 | IFCQ_UNLOCK(ifq); |
3185 | |
3186 | return (err); |
3187 | } |
3188 | |
3189 | errno_t |
3190 | ifnet_set_sndq_maxlen(struct ifnet *ifp, u_int32_t maxqlen) |
3191 | { |
3192 | if (ifp == NULL) |
3193 | return (EINVAL); |
3194 | else if (!(ifp->if_eflags & IFEF_TXSTART)) |
3195 | return (ENXIO); |
3196 | |
3197 | ifclassq_set_maxlen(&ifp->if_snd, maxqlen); |
3198 | |
3199 | return (0); |
3200 | } |
3201 | |
3202 | errno_t |
3203 | ifnet_get_sndq_maxlen(struct ifnet *ifp, u_int32_t *maxqlen) |
3204 | { |
3205 | if (ifp == NULL || maxqlen == NULL) |
3206 | return (EINVAL); |
3207 | else if (!(ifp->if_eflags & IFEF_TXSTART)) |
3208 | return (ENXIO); |
3209 | |
3210 | *maxqlen = ifclassq_get_maxlen(&ifp->if_snd); |
3211 | |
3212 | return (0); |
3213 | } |
3214 | |
3215 | errno_t |
3216 | ifnet_get_sndq_len(struct ifnet *ifp, u_int32_t *pkts) |
3217 | { |
3218 | errno_t err; |
3219 | |
3220 | if (ifp == NULL || pkts == NULL) |
3221 | err = EINVAL; |
3222 | else if (!(ifp->if_eflags & IFEF_TXSTART)) |
3223 | err = ENXIO; |
3224 | else |
3225 | err = ifclassq_get_len(&ifp->if_snd, MBUF_SC_UNSPEC, |
3226 | pkts, NULL); |
3227 | |
3228 | return (err); |
3229 | } |
3230 | |
3231 | errno_t |
3232 | ifnet_get_service_class_sndq_len(struct ifnet *ifp, mbuf_svc_class_t sc, |
3233 | u_int32_t *pkts, u_int32_t *bytes) |
3234 | { |
3235 | errno_t err; |
3236 | |
3237 | if (ifp == NULL || !MBUF_VALID_SC(sc) || |
3238 | (pkts == NULL && bytes == NULL)) |
3239 | err = EINVAL; |
3240 | else if (!(ifp->if_eflags & IFEF_TXSTART)) |
3241 | err = ENXIO; |
3242 | else |
3243 | err = ifclassq_get_len(&ifp->if_snd, sc, pkts, bytes); |
3244 | |
3245 | return (err); |
3246 | } |
3247 | |
3248 | errno_t |
3249 | ifnet_set_rcvq_maxlen(struct ifnet *ifp, u_int32_t maxqlen) |
3250 | { |
3251 | struct dlil_threading_info *inp; |
3252 | |
3253 | if (ifp == NULL) |
3254 | return (EINVAL); |
3255 | else if (!(ifp->if_eflags & IFEF_RXPOLL) || ifp->if_inp == NULL) |
3256 | return (ENXIO); |
3257 | |
3258 | if (maxqlen == 0) |
3259 | maxqlen = if_rcvq_maxlen; |
3260 | else if (maxqlen < IF_RCVQ_MINLEN) |
3261 | maxqlen = IF_RCVQ_MINLEN; |
3262 | |
3263 | inp = ifp->if_inp; |
3264 | lck_mtx_lock(&inp->input_lck); |
3265 | qlimit(&inp->rcvq_pkts) = maxqlen; |
3266 | lck_mtx_unlock(&inp->input_lck); |
3267 | |
3268 | return (0); |
3269 | } |
3270 | |
3271 | errno_t |
3272 | ifnet_get_rcvq_maxlen(struct ifnet *ifp, u_int32_t *maxqlen) |
3273 | { |
3274 | struct dlil_threading_info *inp; |
3275 | |
3276 | if (ifp == NULL || maxqlen == NULL) |
3277 | return (EINVAL); |
3278 | else if (!(ifp->if_eflags & IFEF_RXPOLL) || ifp->if_inp == NULL) |
3279 | return (ENXIO); |
3280 | |
3281 | inp = ifp->if_inp; |
3282 | lck_mtx_lock(&inp->input_lck); |
3283 | *maxqlen = qlimit(&inp->rcvq_pkts); |
3284 | lck_mtx_unlock(&inp->input_lck); |
3285 | return (0); |
3286 | } |
3287 | |
3288 | void |
3289 | ifnet_enqueue_multi_setup(struct ifnet *ifp, uint16_t delay_qlen, |
3290 | uint16_t delay_timeout) |
3291 | { |
3292 | if (delay_qlen > 0 && delay_timeout > 0) { |
3293 | ifp->if_eflags |= IFEF_ENQUEUE_MULTI; |
3294 | ifp->if_start_delay_qlen = min(100, delay_qlen); |
3295 | ifp->if_start_delay_timeout = min(20000, delay_timeout); |
3296 | /* convert timeout to nanoseconds */ |
3297 | ifp->if_start_delay_timeout *= 1000; |
3298 | kprintf("%s: forced IFEF_ENQUEUE_MULTI qlen %u timeout %u\n" , |
3299 | ifp->if_xname, (uint32_t)delay_qlen, |
3300 | (uint32_t)delay_timeout); |
3301 | } else { |
3302 | ifp->if_eflags &= ~IFEF_ENQUEUE_MULTI; |
3303 | } |
3304 | } |
3305 | |
3306 | static inline errno_t |
3307 | ifnet_enqueue_common(struct ifnet *ifp, void *p, classq_pkt_type_t ptype, |
3308 | boolean_t flush, boolean_t *pdrop) |
3309 | { |
3310 | volatile uint64_t *fg_ts = NULL; |
3311 | volatile uint64_t *rt_ts = NULL; |
3312 | struct mbuf *m = p; |
3313 | struct timespec now; |
3314 | u_int64_t now_nsec = 0; |
3315 | int error = 0; |
3316 | |
3317 | ASSERT(ifp->if_eflags & IFEF_TXSTART); |
3318 | |
3319 | /* |
3320 | * If packet already carries a timestamp, either from dlil_output() |
3321 | * or from flowswitch, use it here. Otherwise, record timestamp. |
3322 | * PKTF_TS_VALID is always cleared prior to entering classq, i.e. |
3323 | * the timestamp value is used internally there. |
3324 | */ |
3325 | switch (ptype) { |
3326 | case QP_MBUF: |
3327 | ASSERT(m->m_flags & M_PKTHDR); |
3328 | ASSERT(m->m_nextpkt == NULL); |
3329 | |
3330 | if (!(m->m_pkthdr.pkt_flags & PKTF_TS_VALID) || |
3331 | m->m_pkthdr.pkt_timestamp == 0) { |
3332 | nanouptime(&now); |
3333 | net_timernsec(&now, &now_nsec); |
3334 | m->m_pkthdr.pkt_timestamp = now_nsec; |
3335 | } |
3336 | m->m_pkthdr.pkt_flags &= ~PKTF_TS_VALID; |
3337 | /* |
3338 | * If the packet service class is not background, |
3339 | * update the timestamp to indicate recent activity |
3340 | * on a foreground socket. |
3341 | */ |
3342 | if ((m->m_pkthdr.pkt_flags & PKTF_FLOW_ID) && |
3343 | m->m_pkthdr.pkt_flowsrc == FLOWSRC_INPCB) { |
3344 | if (!(m->m_pkthdr.pkt_flags & PKTF_SO_BACKGROUND)) { |
3345 | ifp->if_fg_sendts = _net_uptime; |
3346 | if (fg_ts != NULL) |
3347 | *fg_ts = _net_uptime; |
3348 | } |
3349 | if (m->m_pkthdr.pkt_flags & PKTF_SO_REALTIME) { |
3350 | ifp->if_rt_sendts = _net_uptime; |
3351 | if (rt_ts != NULL) |
3352 | *rt_ts = _net_uptime; |
3353 | } |
3354 | } |
3355 | break; |
3356 | |
3357 | |
3358 | default: |
3359 | VERIFY(0); |
3360 | /* NOTREACHED */ |
3361 | } |
3362 | |
3363 | if (ifp->if_eflags & IFEF_ENQUEUE_MULTI) { |
3364 | if (now_nsec == 0) { |
3365 | nanouptime(&now); |
3366 | net_timernsec(&now, &now_nsec); |
3367 | } |
3368 | /* |
3369 | * If the driver chose to delay start callback for |
3370 | * coalescing multiple packets, Then use the following |
3371 | * heuristics to make sure that start callback will |
3372 | * be delayed only when bulk data transfer is detected. |
3373 | * 1. number of packets enqueued in (delay_win * 2) is |
3374 | * greater than or equal to the delay qlen. |
3375 | * 2. If delay_start is enabled it will stay enabled for |
3376 | * another 10 idle windows. This is to take into account |
3377 | * variable RTT and burst traffic. |
3378 | * 3. If the time elapsed since last enqueue is more |
3379 | * than 200ms we disable delaying start callback. This is |
3380 | * is to take idle time into account. |
3381 | */ |
3382 | u_int64_t dwin = (ifp->if_start_delay_timeout << 1); |
3383 | if (ifp->if_start_delay_swin > 0) { |
3384 | if ((ifp->if_start_delay_swin + dwin) > now_nsec) { |
3385 | ifp->if_start_delay_cnt++; |
3386 | } else if ((now_nsec - ifp->if_start_delay_swin) |
3387 | >= (200 * 1000 * 1000)) { |
3388 | ifp->if_start_delay_swin = now_nsec; |
3389 | ifp->if_start_delay_cnt = 1; |
3390 | ifp->if_start_delay_idle = 0; |
3391 | if (ifp->if_eflags & IFEF_DELAY_START) { |
3392 | ifp->if_eflags &= |
3393 | ~(IFEF_DELAY_START); |
3394 | ifnet_delay_start_disabled++; |
3395 | } |
3396 | } else { |
3397 | if (ifp->if_start_delay_cnt >= |
3398 | ifp->if_start_delay_qlen) { |
3399 | ifp->if_eflags |= IFEF_DELAY_START; |
3400 | ifp->if_start_delay_idle = 0; |
3401 | } else { |
3402 | if (ifp->if_start_delay_idle >= 10) { |
3403 | ifp->if_eflags &= ~(IFEF_DELAY_START); |
3404 | ifnet_delay_start_disabled++; |
3405 | } else { |
3406 | ifp->if_start_delay_idle++; |
3407 | } |
3408 | } |
3409 | ifp->if_start_delay_swin = now_nsec; |
3410 | ifp->if_start_delay_cnt = 1; |
3411 | } |
3412 | } else { |
3413 | ifp->if_start_delay_swin = now_nsec; |
3414 | ifp->if_start_delay_cnt = 1; |
3415 | ifp->if_start_delay_idle = 0; |
3416 | ifp->if_eflags &= ~(IFEF_DELAY_START); |
3417 | } |
3418 | } else { |
3419 | ifp->if_eflags &= ~(IFEF_DELAY_START); |
3420 | } |
3421 | |
3422 | switch (ptype) { |
3423 | case QP_MBUF: |
3424 | /* enqueue the packet (caller consumes object) */ |
3425 | error = ifclassq_enqueue(&ifp->if_snd, m, QP_MBUF, pdrop); |
3426 | m = NULL; |
3427 | break; |
3428 | |
3429 | |
3430 | default: |
3431 | break; |
3432 | } |
3433 | |
3434 | /* |
3435 | * Tell the driver to start dequeueing; do this even when the queue |
3436 | * for the packet is suspended (EQSUSPENDED), as the driver could still |
3437 | * be dequeueing from other unsuspended queues. |
3438 | */ |
3439 | if (!(ifp->if_eflags & IFEF_ENQUEUE_MULTI) && |
3440 | ((error == 0 && flush) || error == EQFULL || error == EQSUSPENDED)) |
3441 | ifnet_start(ifp); |
3442 | |
3443 | return (error); |
3444 | } |
3445 | |
3446 | errno_t |
3447 | ifnet_enqueue(struct ifnet *ifp, struct mbuf *m) |
3448 | { |
3449 | boolean_t pdrop; |
3450 | return (ifnet_enqueue_mbuf(ifp, m, TRUE, &pdrop)); |
3451 | } |
3452 | |
3453 | errno_t |
3454 | ifnet_enqueue_mbuf(struct ifnet *ifp, struct mbuf *m, boolean_t flush, |
3455 | boolean_t *pdrop) |
3456 | { |
3457 | if (ifp == NULL || m == NULL || !(m->m_flags & M_PKTHDR) || |
3458 | m->m_nextpkt != NULL) { |
3459 | if (m != NULL) { |
3460 | m_freem_list(m); |
3461 | *pdrop = TRUE; |
3462 | } |
3463 | return (EINVAL); |
3464 | } else if (!(ifp->if_eflags & IFEF_TXSTART) || |
3465 | !IF_FULLY_ATTACHED(ifp)) { |
3466 | /* flag tested without lock for performance */ |
3467 | m_freem(m); |
3468 | *pdrop = TRUE; |
3469 | return (ENXIO); |
3470 | } else if (!(ifp->if_flags & IFF_UP)) { |
3471 | m_freem(m); |
3472 | *pdrop = TRUE; |
3473 | return (ENETDOWN); |
3474 | } |
3475 | |
3476 | return (ifnet_enqueue_common(ifp, m, QP_MBUF, flush, pdrop)); |
3477 | } |
3478 | |
3479 | |
3480 | errno_t |
3481 | ifnet_dequeue(struct ifnet *ifp, struct mbuf **mp) |
3482 | { |
3483 | errno_t rc; |
3484 | classq_pkt_type_t ptype; |
3485 | if (ifp == NULL || mp == NULL) |
3486 | return (EINVAL); |
3487 | else if (!(ifp->if_eflags & IFEF_TXSTART) || |
3488 | ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX) |
3489 | return (ENXIO); |
3490 | if (!ifnet_is_attached(ifp, 1)) |
3491 | return (ENXIO); |
3492 | |
3493 | rc = ifclassq_dequeue(&ifp->if_snd, 1, CLASSQ_DEQUEUE_MAX_BYTE_LIMIT, |
3494 | (void **)mp, NULL, NULL, NULL, &ptype); |
3495 | VERIFY((*mp == NULL) || (ptype == QP_MBUF)); |
3496 | ifnet_decr_iorefcnt(ifp); |
3497 | |
3498 | return (rc); |
3499 | } |
3500 | |
3501 | errno_t |
3502 | ifnet_dequeue_service_class(struct ifnet *ifp, mbuf_svc_class_t sc, |
3503 | struct mbuf **mp) |
3504 | { |
3505 | errno_t rc; |
3506 | classq_pkt_type_t ptype; |
3507 | if (ifp == NULL || mp == NULL || !MBUF_VALID_SC(sc)) |
3508 | return (EINVAL); |
3509 | else if (!(ifp->if_eflags & IFEF_TXSTART) || |
3510 | ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX) |
3511 | return (ENXIO); |
3512 | if (!ifnet_is_attached(ifp, 1)) |
3513 | return (ENXIO); |
3514 | |
3515 | rc = ifclassq_dequeue_sc(&ifp->if_snd, sc, 1, |
3516 | CLASSQ_DEQUEUE_MAX_BYTE_LIMIT, (void **)mp, NULL, NULL, |
3517 | NULL, &ptype); |
3518 | VERIFY((*mp == NULL) || (ptype == QP_MBUF)); |
3519 | ifnet_decr_iorefcnt(ifp); |
3520 | return (rc); |
3521 | } |
3522 | |
3523 | errno_t |
3524 | ifnet_dequeue_multi(struct ifnet *ifp, u_int32_t pkt_limit, |
3525 | struct mbuf **head, struct mbuf **tail, u_int32_t *cnt, u_int32_t *len) |
3526 | { |
3527 | errno_t rc; |
3528 | classq_pkt_type_t ptype; |
3529 | if (ifp == NULL || head == NULL || pkt_limit < 1) |
3530 | return (EINVAL); |
3531 | else if (!(ifp->if_eflags & IFEF_TXSTART) || |
3532 | ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX) |
3533 | return (ENXIO); |
3534 | if (!ifnet_is_attached(ifp, 1)) |
3535 | return (ENXIO); |
3536 | |
3537 | rc = ifclassq_dequeue(&ifp->if_snd, pkt_limit, |
3538 | CLASSQ_DEQUEUE_MAX_BYTE_LIMIT, (void **)head, (void **)tail, cnt, |
3539 | len, &ptype); |
3540 | VERIFY((*head == NULL) || (ptype == QP_MBUF)); |
3541 | ifnet_decr_iorefcnt(ifp); |
3542 | return (rc); |
3543 | } |
3544 | |
3545 | errno_t |
3546 | ifnet_dequeue_multi_bytes(struct ifnet *ifp, u_int32_t byte_limit, |
3547 | struct mbuf **head, struct mbuf **tail, u_int32_t *cnt, u_int32_t *len) |
3548 | { |
3549 | errno_t rc; |
3550 | classq_pkt_type_t ptype; |
3551 | if (ifp == NULL || head == NULL || byte_limit < 1) |
3552 | return (EINVAL); |
3553 | else if (!(ifp->if_eflags & IFEF_TXSTART) || |
3554 | ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX) |
3555 | return (ENXIO); |
3556 | if (!ifnet_is_attached(ifp, 1)) |
3557 | return (ENXIO); |
3558 | |
3559 | rc = ifclassq_dequeue(&ifp->if_snd, CLASSQ_DEQUEUE_MAX_PKT_LIMIT, |
3560 | byte_limit, (void **)head, (void **)tail, cnt, len, &ptype); |
3561 | VERIFY((*head == NULL) || (ptype == QP_MBUF)); |
3562 | ifnet_decr_iorefcnt(ifp); |
3563 | return (rc); |
3564 | } |
3565 | |
3566 | errno_t |
3567 | ifnet_dequeue_service_class_multi(struct ifnet *ifp, mbuf_svc_class_t sc, |
3568 | u_int32_t pkt_limit, struct mbuf **head, struct mbuf **tail, u_int32_t *cnt, |
3569 | u_int32_t *len) |
3570 | { |
3571 | errno_t rc; |
3572 | classq_pkt_type_t ptype; |
3573 | if (ifp == NULL || head == NULL || pkt_limit < 1 || |
3574 | !MBUF_VALID_SC(sc)) |
3575 | return (EINVAL); |
3576 | else if (!(ifp->if_eflags & IFEF_TXSTART) || |
3577 | ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX) |
3578 | return (ENXIO); |
3579 | if (!ifnet_is_attached(ifp, 1)) |
3580 | return (ENXIO); |
3581 | |
3582 | rc = ifclassq_dequeue_sc(&ifp->if_snd, sc, pkt_limit, |
3583 | CLASSQ_DEQUEUE_MAX_BYTE_LIMIT, (void **)head, |
3584 | (void **)tail, cnt, len, &ptype); |
3585 | VERIFY((*head == NULL) || (ptype == QP_MBUF)); |
3586 | ifnet_decr_iorefcnt(ifp); |
3587 | return (rc); |
3588 | } |
3589 | |
3590 | #if !CONFIG_EMBEDDED |
3591 | errno_t |
3592 | ifnet_framer_stub(struct ifnet *ifp, struct mbuf **m, |
3593 | const struct sockaddr *dest, const char *dest_linkaddr, |
3594 | const char *frame_type, u_int32_t *pre, u_int32_t *post) |
3595 | { |
3596 | if (pre != NULL) |
3597 | *pre = 0; |
3598 | if (post != NULL) |
3599 | *post = 0; |
3600 | |
3601 | return (ifp->if_framer_legacy(ifp, m, dest, dest_linkaddr, frame_type)); |
3602 | } |
3603 | #endif /* !CONFIG_EMBEDDED */ |
3604 | |
3605 | static int |
3606 | dlil_interface_filters_input(struct ifnet *ifp, struct mbuf **m_p, |
3607 | char **, protocol_family_t protocol_family) |
3608 | { |
3609 | struct ifnet_filter *filter; |
3610 | |
3611 | /* |
3612 | * Pass the inbound packet to the interface filters |
3613 | */ |
3614 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
3615 | /* prevent filter list from changing in case we drop the lock */ |
3616 | if_flt_monitor_busy(ifp); |
3617 | TAILQ_FOREACH(filter, &ifp->if_flt_head, filt_next) { |
3618 | int result; |
3619 | |
3620 | if (!filter->filt_skip && filter->filt_input != NULL && |
3621 | (filter->filt_protocol == 0 || |
3622 | filter->filt_protocol == protocol_family)) { |
3623 | lck_mtx_unlock(&ifp->if_flt_lock); |
3624 | |
3625 | result = (*filter->filt_input)(filter->filt_cookie, |
3626 | ifp, protocol_family, m_p, frame_header_p); |
3627 | |
3628 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
3629 | if (result != 0) { |
3630 | /* we're done with the filter list */ |
3631 | if_flt_monitor_unbusy(ifp); |
3632 | lck_mtx_unlock(&ifp->if_flt_lock); |
3633 | return (result); |
3634 | } |
3635 | } |
3636 | } |
3637 | /* we're done with the filter list */ |
3638 | if_flt_monitor_unbusy(ifp); |
3639 | lck_mtx_unlock(&ifp->if_flt_lock); |
3640 | |
3641 | /* |
3642 | * Strip away M_PROTO1 bit prior to sending packet up the stack as |
3643 | * it is meant to be local to a subsystem -- if_bridge for M_PROTO1 |
3644 | */ |
3645 | if (*m_p != NULL) |
3646 | (*m_p)->m_flags &= ~M_PROTO1; |
3647 | |
3648 | return (0); |
3649 | } |
3650 | |
3651 | static int |
3652 | dlil_interface_filters_output(struct ifnet *ifp, struct mbuf **m_p, |
3653 | protocol_family_t protocol_family) |
3654 | { |
3655 | struct ifnet_filter *filter; |
3656 | |
3657 | /* |
3658 | * Pass the outbound packet to the interface filters |
3659 | */ |
3660 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
3661 | /* prevent filter list from changing in case we drop the lock */ |
3662 | if_flt_monitor_busy(ifp); |
3663 | TAILQ_FOREACH(filter, &ifp->if_flt_head, filt_next) { |
3664 | int result; |
3665 | |
3666 | if (!filter->filt_skip && filter->filt_output != NULL && |
3667 | (filter->filt_protocol == 0 || |
3668 | filter->filt_protocol == protocol_family)) { |
3669 | lck_mtx_unlock(&ifp->if_flt_lock); |
3670 | |
3671 | result = filter->filt_output(filter->filt_cookie, ifp, |
3672 | protocol_family, m_p); |
3673 | |
3674 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
3675 | if (result != 0) { |
3676 | /* we're done with the filter list */ |
3677 | if_flt_monitor_unbusy(ifp); |
3678 | lck_mtx_unlock(&ifp->if_flt_lock); |
3679 | return (result); |
3680 | } |
3681 | } |
3682 | } |
3683 | /* we're done with the filter list */ |
3684 | if_flt_monitor_unbusy(ifp); |
3685 | lck_mtx_unlock(&ifp->if_flt_lock); |
3686 | |
3687 | return (0); |
3688 | } |
3689 | |
3690 | static void |
3691 | dlil_ifproto_input(struct if_proto * ifproto, mbuf_t m) |
3692 | { |
3693 | int error; |
3694 | |
3695 | if (ifproto->proto_kpi == kProtoKPI_v1) { |
3696 | /* Version 1 protocols get one packet at a time */ |
3697 | while (m != NULL) { |
3698 | char * ; |
3699 | mbuf_t next_packet; |
3700 | |
3701 | next_packet = m->m_nextpkt; |
3702 | m->m_nextpkt = NULL; |
3703 | frame_header = m->m_pkthdr.pkt_hdr; |
3704 | m->m_pkthdr.pkt_hdr = NULL; |
3705 | error = (*ifproto->kpi.v1.input)(ifproto->ifp, |
3706 | ifproto->protocol_family, m, frame_header); |
3707 | if (error != 0 && error != EJUSTRETURN) |
3708 | m_freem(m); |
3709 | m = next_packet; |
3710 | } |
3711 | } else if (ifproto->proto_kpi == kProtoKPI_v2) { |
3712 | /* Version 2 protocols support packet lists */ |
3713 | error = (*ifproto->kpi.v2.input)(ifproto->ifp, |
3714 | ifproto->protocol_family, m); |
3715 | if (error != 0 && error != EJUSTRETURN) |
3716 | m_freem_list(m); |
3717 | } |
3718 | } |
3719 | |
3720 | static void |
3721 | dlil_input_stats_add(const struct ifnet_stat_increment_param *s, |
3722 | struct dlil_threading_info *inp, boolean_t poll) |
3723 | { |
3724 | struct ifnet_stat_increment_param *d = &inp->stats; |
3725 | |
3726 | if (s->packets_in != 0) |
3727 | d->packets_in += s->packets_in; |
3728 | if (s->bytes_in != 0) |
3729 | d->bytes_in += s->bytes_in; |
3730 | if (s->errors_in != 0) |
3731 | d->errors_in += s->errors_in; |
3732 | |
3733 | if (s->packets_out != 0) |
3734 | d->packets_out += s->packets_out; |
3735 | if (s->bytes_out != 0) |
3736 | d->bytes_out += s->bytes_out; |
3737 | if (s->errors_out != 0) |
3738 | d->errors_out += s->errors_out; |
3739 | |
3740 | if (s->collisions != 0) |
3741 | d->collisions += s->collisions; |
3742 | if (s->dropped != 0) |
3743 | d->dropped += s->dropped; |
3744 | |
3745 | if (poll) |
3746 | PKTCNTR_ADD(&inp->tstats, s->packets_in, s->bytes_in); |
3747 | } |
3748 | |
3749 | static void |
3750 | dlil_input_stats_sync(struct ifnet *ifp, struct dlil_threading_info *inp) |
3751 | { |
3752 | struct ifnet_stat_increment_param *s = &inp->stats; |
3753 | |
3754 | /* |
3755 | * Use of atomic operations is unavoidable here because |
3756 | * these stats may also be incremented elsewhere via KPIs. |
3757 | */ |
3758 | if (s->packets_in != 0) { |
3759 | atomic_add_64(&ifp->if_data.ifi_ipackets, s->packets_in); |
3760 | s->packets_in = 0; |
3761 | } |
3762 | if (s->bytes_in != 0) { |
3763 | atomic_add_64(&ifp->if_data.ifi_ibytes, s->bytes_in); |
3764 | s->bytes_in = 0; |
3765 | } |
3766 | if (s->errors_in != 0) { |
3767 | atomic_add_64(&ifp->if_data.ifi_ierrors, s->errors_in); |
3768 | s->errors_in = 0; |
3769 | } |
3770 | |
3771 | if (s->packets_out != 0) { |
3772 | atomic_add_64(&ifp->if_data.ifi_opackets, s->packets_out); |
3773 | s->packets_out = 0; |
3774 | } |
3775 | if (s->bytes_out != 0) { |
3776 | atomic_add_64(&ifp->if_data.ifi_obytes, s->bytes_out); |
3777 | s->bytes_out = 0; |
3778 | } |
3779 | if (s->errors_out != 0) { |
3780 | atomic_add_64(&ifp->if_data.ifi_oerrors, s->errors_out); |
3781 | s->errors_out = 0; |
3782 | } |
3783 | |
3784 | if (s->collisions != 0) { |
3785 | atomic_add_64(&ifp->if_data.ifi_collisions, s->collisions); |
3786 | s->collisions = 0; |
3787 | } |
3788 | if (s->dropped != 0) { |
3789 | atomic_add_64(&ifp->if_data.ifi_iqdrops, s->dropped); |
3790 | s->dropped = 0; |
3791 | } |
3792 | |
3793 | if (ifp->if_data_threshold != 0) { |
3794 | lck_mtx_convert_spin(&inp->input_lck); |
3795 | ifnet_notify_data_threshold(ifp); |
3796 | } |
3797 | |
3798 | /* |
3799 | * No need for atomic operations as they are modified here |
3800 | * only from within the DLIL input thread context. |
3801 | */ |
3802 | if (inp->tstats.packets != 0) { |
3803 | inp->pstats.ifi_poll_packets += inp->tstats.packets; |
3804 | inp->tstats.packets = 0; |
3805 | } |
3806 | if (inp->tstats.bytes != 0) { |
3807 | inp->pstats.ifi_poll_bytes += inp->tstats.bytes; |
3808 | inp->tstats.bytes = 0; |
3809 | } |
3810 | } |
3811 | |
3812 | __private_extern__ void |
3813 | dlil_input_packet_list(struct ifnet *ifp, struct mbuf *m) |
3814 | { |
3815 | return (dlil_input_packet_list_common(ifp, m, 0, |
3816 | IFNET_MODEL_INPUT_POLL_OFF, FALSE)); |
3817 | } |
3818 | |
3819 | __private_extern__ void |
3820 | dlil_input_packet_list_extended(struct ifnet *ifp, struct mbuf *m, |
3821 | u_int32_t cnt, ifnet_model_t mode) |
3822 | { |
3823 | return (dlil_input_packet_list_common(ifp, m, cnt, mode, TRUE)); |
3824 | } |
3825 | |
3826 | static void |
3827 | dlil_input_packet_list_common(struct ifnet *ifp_param, struct mbuf *m, |
3828 | u_int32_t cnt, ifnet_model_t mode, boolean_t ext) |
3829 | { |
3830 | int error = 0; |
3831 | protocol_family_t protocol_family; |
3832 | mbuf_t next_packet; |
3833 | ifnet_t ifp = ifp_param; |
3834 | char * = NULL; |
3835 | struct if_proto *last_ifproto = NULL; |
3836 | mbuf_t pkt_first = NULL; |
3837 | mbuf_t *pkt_next = NULL; |
3838 | u_int32_t poll_thresh = 0, poll_ival = 0; |
3839 | |
3840 | KERNEL_DEBUG(DBG_FNC_DLIL_INPUT | DBG_FUNC_START, 0, 0, 0, 0, 0); |
3841 | |
3842 | if (ext && mode == IFNET_MODEL_INPUT_POLL_ON && cnt > 1 && |
3843 | (poll_ival = if_rxpoll_interval_pkts) > 0) |
3844 | poll_thresh = cnt; |
3845 | |
3846 | while (m != NULL) { |
3847 | struct if_proto *ifproto = NULL; |
3848 | int iorefcnt = 0; |
3849 | uint32_t pktf_mask; /* pkt flags to preserve */ |
3850 | |
3851 | if (ifp_param == NULL) |
3852 | ifp = m->m_pkthdr.rcvif; |
3853 | |
3854 | if ((ifp->if_eflags & IFEF_RXPOLL) && poll_thresh != 0 && |
3855 | poll_ival > 0 && (--poll_thresh % poll_ival) == 0) |
3856 | ifnet_poll(ifp); |
3857 | |
3858 | /* Check if this mbuf looks valid */ |
3859 | MBUF_INPUT_CHECK(m, ifp); |
3860 | |
3861 | next_packet = m->m_nextpkt; |
3862 | m->m_nextpkt = NULL; |
3863 | frame_header = m->m_pkthdr.pkt_hdr; |
3864 | m->m_pkthdr.pkt_hdr = NULL; |
3865 | |
3866 | /* |
3867 | * Get an IO reference count if the interface is not |
3868 | * loopback (lo0) and it is attached; lo0 never goes |
3869 | * away, so optimize for that. |
3870 | */ |
3871 | if (ifp != lo_ifp) { |
3872 | if (!ifnet_is_attached(ifp, 1)) { |
3873 | m_freem(m); |
3874 | goto next; |
3875 | } |
3876 | iorefcnt = 1; |
3877 | /* |
3878 | * Preserve the time stamp if it was set. |
3879 | */ |
3880 | pktf_mask = PKTF_TS_VALID; |
3881 | } else { |
3882 | /* |
3883 | * If this arrived on lo0, preserve interface addr |
3884 | * info to allow for connectivity between loopback |
3885 | * and local interface addresses. |
3886 | */ |
3887 | pktf_mask = (PKTF_LOOP|PKTF_IFAINFO); |
3888 | } |
3889 | |
3890 | /* make sure packet comes in clean */ |
3891 | m_classifier_init(m, pktf_mask); |
3892 | |
3893 | ifp_inc_traffic_class_in(ifp, m); |
3894 | |
3895 | /* find which protocol family this packet is for */ |
3896 | ifnet_lock_shared(ifp); |
3897 | error = (*ifp->if_demux)(ifp, m, frame_header, |
3898 | &protocol_family); |
3899 | ifnet_lock_done(ifp); |
3900 | if (error != 0) { |
3901 | if (error == EJUSTRETURN) |
3902 | goto next; |
3903 | protocol_family = 0; |
3904 | } |
3905 | |
3906 | pktap_input(ifp, protocol_family, m, frame_header); |
3907 | |
3908 | /* Drop v4 packets received on CLAT46 enabled interface */ |
3909 | if (protocol_family == PF_INET && IS_INTF_CLAT46(ifp)) { |
3910 | m_freem(m); |
3911 | ip6stat.ip6s_clat464_in_v4_drop++; |
3912 | goto next; |
3913 | } |
3914 | |
3915 | /* Translate the packet if it is received on CLAT interface */ |
3916 | if (protocol_family == PF_INET6 && IS_INTF_CLAT46(ifp) |
3917 | && dlil_is_clat_needed(protocol_family, m)) { |
3918 | char *data = NULL; |
3919 | struct ether_header eh; |
3920 | struct ether_header *ehp = NULL; |
3921 | |
3922 | if (ifp->if_type == IFT_ETHER) { |
3923 | ehp = (struct ether_header *)(void *)frame_header; |
3924 | /* Skip RX Ethernet packets if they are not IPV6 */ |
3925 | if (ntohs(ehp->ether_type) != ETHERTYPE_IPV6) |
3926 | goto skip_clat; |
3927 | |
3928 | /* Keep a copy of frame_header for Ethernet packets */ |
3929 | bcopy(frame_header, (caddr_t)&eh, ETHER_HDR_LEN); |
3930 | } |
3931 | error = dlil_clat64(ifp, &protocol_family, &m); |
3932 | data = (char *) mbuf_data(m); |
3933 | if (error != 0) { |
3934 | m_freem(m); |
3935 | ip6stat.ip6s_clat464_in_drop++; |
3936 | goto next; |
3937 | } |
3938 | /* Native v6 should be No-op */ |
3939 | if (protocol_family != PF_INET) |
3940 | goto skip_clat; |
3941 | |
3942 | /* Do this only for translated v4 packets. */ |
3943 | switch (ifp->if_type) { |
3944 | case IFT_CELLULAR: |
3945 | frame_header = data; |
3946 | break; |
3947 | case IFT_ETHER: |
3948 | /* |
3949 | * Drop if the mbuf doesn't have enough |
3950 | * space for Ethernet header |
3951 | */ |
3952 | if (M_LEADINGSPACE(m) < ETHER_HDR_LEN) { |
3953 | m_free(m); |
3954 | ip6stat.ip6s_clat464_in_drop++; |
3955 | goto next; |
3956 | } |
3957 | /* |
3958 | * Set the frame_header ETHER_HDR_LEN bytes |
3959 | * preceeding the data pointer. Change |
3960 | * the ether_type too. |
3961 | */ |
3962 | frame_header = data - ETHER_HDR_LEN; |
3963 | eh.ether_type = htons(ETHERTYPE_IP); |
3964 | bcopy((caddr_t)&eh, frame_header, ETHER_HDR_LEN); |
3965 | break; |
3966 | } |
3967 | } |
3968 | skip_clat: |
3969 | if (hwcksum_dbg != 0 && !(ifp->if_flags & IFF_LOOPBACK) && |
3970 | !(m->m_pkthdr.pkt_flags & PKTF_LOOP)) |
3971 | dlil_input_cksum_dbg(ifp, m, frame_header, |
3972 | protocol_family); |
3973 | |
3974 | /* |
3975 | * For partial checksum offload, we expect the driver to |
3976 | * set the start offset indicating the start of the span |
3977 | * that is covered by the hardware-computed checksum; |
3978 | * adjust this start offset accordingly because the data |
3979 | * pointer has been advanced beyond the link-layer header. |
3980 | * |
3981 | * Don't adjust if the interface is a bridge member, as |
3982 | * the adjustment will occur from the context of the |
3983 | * bridge interface during input. |
3984 | */ |
3985 | if (ifp->if_bridge == NULL && (m->m_pkthdr.csum_flags & |
3986 | (CSUM_DATA_VALID | CSUM_PARTIAL)) == |
3987 | (CSUM_DATA_VALID | CSUM_PARTIAL)) { |
3988 | int adj; |
3989 | if (frame_header == NULL || |
3990 | frame_header < (char *)mbuf_datastart(m) || |
3991 | frame_header > (char *)m->m_data || |
3992 | (adj = (m->m_data - frame_header)) > |
3993 | m->m_pkthdr.csum_rx_start) { |
3994 | m->m_pkthdr.csum_data = 0; |
3995 | m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID; |
3996 | hwcksum_in_invalidated++; |
3997 | } else { |
3998 | m->m_pkthdr.csum_rx_start -= adj; |
3999 | } |
4000 | } |
4001 | |
4002 | if (clat_debug) |
4003 | pktap_input(ifp, protocol_family, m, frame_header); |
4004 | |
4005 | if (m->m_flags & (M_BCAST|M_MCAST)) |
4006 | atomic_add_64(&ifp->if_imcasts, 1); |
4007 | |
4008 | /* run interface filters, exclude VLAN packets PR-3586856 */ |
4009 | if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) == 0) { |
4010 | error = dlil_interface_filters_input(ifp, &m, |
4011 | &frame_header, protocol_family); |
4012 | if (error != 0) { |
4013 | if (error != EJUSTRETURN) |
4014 | m_freem(m); |
4015 | goto next; |
4016 | } |
4017 | } |
4018 | if (error != 0 || ((m->m_flags & M_PROMISC) != 0)) { |
4019 | m_freem(m); |
4020 | goto next; |
4021 | } |
4022 | |
4023 | /* Lookup the protocol attachment to this interface */ |
4024 | if (protocol_family == 0) { |
4025 | ifproto = NULL; |
4026 | } else if (last_ifproto != NULL && last_ifproto->ifp == ifp && |
4027 | (last_ifproto->protocol_family == protocol_family)) { |
4028 | VERIFY(ifproto == NULL); |
4029 | ifproto = last_ifproto; |
4030 | if_proto_ref(last_ifproto); |
4031 | } else { |
4032 | VERIFY(ifproto == NULL); |
4033 | ifnet_lock_shared(ifp); |
4034 | /* callee holds a proto refcnt upon success */ |
4035 | ifproto = find_attached_proto(ifp, protocol_family); |
4036 | ifnet_lock_done(ifp); |
4037 | } |
4038 | if (ifproto == NULL) { |
4039 | /* no protocol for this packet, discard */ |
4040 | m_freem(m); |
4041 | goto next; |
4042 | } |
4043 | if (ifproto != last_ifproto) { |
4044 | if (last_ifproto != NULL) { |
4045 | /* pass up the list for the previous protocol */ |
4046 | dlil_ifproto_input(last_ifproto, pkt_first); |
4047 | pkt_first = NULL; |
4048 | if_proto_free(last_ifproto); |
4049 | } |
4050 | last_ifproto = ifproto; |
4051 | if_proto_ref(ifproto); |
4052 | } |
4053 | /* extend the list */ |
4054 | m->m_pkthdr.pkt_hdr = frame_header; |
4055 | if (pkt_first == NULL) { |
4056 | pkt_first = m; |
4057 | } else { |
4058 | *pkt_next = m; |
4059 | } |
4060 | pkt_next = &m->m_nextpkt; |
4061 | |
4062 | next: |
4063 | if (next_packet == NULL && last_ifproto != NULL) { |
4064 | /* pass up the last list of packets */ |
4065 | dlil_ifproto_input(last_ifproto, pkt_first); |
4066 | if_proto_free(last_ifproto); |
4067 | last_ifproto = NULL; |
4068 | } |
4069 | if (ifproto != NULL) { |
4070 | if_proto_free(ifproto); |
4071 | ifproto = NULL; |
4072 | } |
4073 | |
4074 | m = next_packet; |
4075 | |
4076 | /* update the driver's multicast filter, if needed */ |
4077 | if (ifp->if_updatemcasts > 0 && if_mcasts_update(ifp) == 0) |
4078 | ifp->if_updatemcasts = 0; |
4079 | if (iorefcnt == 1) |
4080 | ifnet_decr_iorefcnt(ifp); |
4081 | } |
4082 | |
4083 | KERNEL_DEBUG(DBG_FNC_DLIL_INPUT | DBG_FUNC_END, 0, 0, 0, 0, 0); |
4084 | } |
4085 | |
4086 | errno_t |
4087 | if_mcasts_update(struct ifnet *ifp) |
4088 | { |
4089 | errno_t err; |
4090 | |
4091 | err = ifnet_ioctl(ifp, 0, SIOCADDMULTI, NULL); |
4092 | if (err == EAFNOSUPPORT) |
4093 | err = 0; |
4094 | printf("%s: %s %d suspended link-layer multicast membership(s) " |
4095 | "(err=%d)\n" , if_name(ifp), |
4096 | (err == 0 ? "successfully restored" : "failed to restore" ), |
4097 | ifp->if_updatemcasts, err); |
4098 | |
4099 | /* just return success */ |
4100 | return (0); |
4101 | } |
4102 | |
4103 | /* If ifp is set, we will increment the generation for the interface */ |
4104 | int |
4105 | dlil_post_complete_msg(struct ifnet *ifp, struct kev_msg *event) |
4106 | { |
4107 | if (ifp != NULL) { |
4108 | ifnet_increment_generation(ifp); |
4109 | } |
4110 | |
4111 | #if NECP |
4112 | necp_update_all_clients(); |
4113 | #endif /* NECP */ |
4114 | |
4115 | return (kev_post_msg(event)); |
4116 | } |
4117 | |
4118 | __private_extern__ void |
4119 | dlil_post_sifflags_msg(struct ifnet * ifp) |
4120 | { |
4121 | struct kev_msg ev_msg; |
4122 | struct net_event_data ev_data; |
4123 | |
4124 | bzero(&ev_data, sizeof (ev_data)); |
4125 | bzero(&ev_msg, sizeof (ev_msg)); |
4126 | ev_msg.vendor_code = KEV_VENDOR_APPLE; |
4127 | ev_msg.kev_class = KEV_NETWORK_CLASS; |
4128 | ev_msg.kev_subclass = KEV_DL_SUBCLASS; |
4129 | ev_msg.event_code = KEV_DL_SIFFLAGS; |
4130 | strlcpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ); |
4131 | ev_data.if_family = ifp->if_family; |
4132 | ev_data.if_unit = (u_int32_t) ifp->if_unit; |
4133 | ev_msg.dv[0].data_length = sizeof(struct net_event_data); |
4134 | ev_msg.dv[0].data_ptr = &ev_data; |
4135 | ev_msg.dv[1].data_length = 0; |
4136 | dlil_post_complete_msg(ifp, &ev_msg); |
4137 | } |
4138 | |
4139 | #define TMP_IF_PROTO_ARR_SIZE 10 |
4140 | static int |
4141 | dlil_event_internal(struct ifnet *ifp, struct kev_msg *event, bool update_generation) |
4142 | { |
4143 | struct ifnet_filter *filter = NULL; |
4144 | struct if_proto *proto = NULL; |
4145 | int if_proto_count = 0; |
4146 | struct if_proto **tmp_ifproto_arr = NULL; |
4147 | struct if_proto *tmp_ifproto_stack_arr[TMP_IF_PROTO_ARR_SIZE] = {NULL}; |
4148 | int tmp_ifproto_arr_idx = 0; |
4149 | bool tmp_malloc = false; |
4150 | |
4151 | /* |
4152 | * Pass the event to the interface filters |
4153 | */ |
4154 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
4155 | /* prevent filter list from changing in case we drop the lock */ |
4156 | if_flt_monitor_busy(ifp); |
4157 | TAILQ_FOREACH(filter, &ifp->if_flt_head, filt_next) { |
4158 | if (filter->filt_event != NULL) { |
4159 | lck_mtx_unlock(&ifp->if_flt_lock); |
4160 | |
4161 | filter->filt_event(filter->filt_cookie, ifp, |
4162 | filter->filt_protocol, event); |
4163 | |
4164 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
4165 | } |
4166 | } |
4167 | /* we're done with the filter list */ |
4168 | if_flt_monitor_unbusy(ifp); |
4169 | lck_mtx_unlock(&ifp->if_flt_lock); |
4170 | |
4171 | /* Get an io ref count if the interface is attached */ |
4172 | if (!ifnet_is_attached(ifp, 1)) |
4173 | goto done; |
4174 | |
4175 | /* |
4176 | * An embedded tmp_list_entry in if_proto may still get |
4177 | * over-written by another thread after giving up ifnet lock, |
4178 | * therefore we are avoiding embedded pointers here. |
4179 | */ |
4180 | ifnet_lock_shared(ifp); |
4181 | if_proto_count = dlil_ifp_protolist(ifp, NULL, 0); |
4182 | if (if_proto_count) { |
4183 | int i; |
4184 | VERIFY(ifp->if_proto_hash != NULL); |
4185 | if (if_proto_count <= TMP_IF_PROTO_ARR_SIZE) { |
4186 | tmp_ifproto_arr = tmp_ifproto_stack_arr; |
4187 | } else { |
4188 | MALLOC(tmp_ifproto_arr, struct if_proto **, |
4189 | sizeof (*tmp_ifproto_arr) * if_proto_count, |
4190 | M_TEMP, M_ZERO); |
4191 | if (tmp_ifproto_arr == NULL) { |
4192 | ifnet_lock_done(ifp); |
4193 | goto cleanup; |
4194 | } |
4195 | tmp_malloc = true; |
4196 | } |
4197 | |
4198 | for (i = 0; i < PROTO_HASH_SLOTS; i++) { |
4199 | SLIST_FOREACH(proto, &ifp->if_proto_hash[i], |
4200 | next_hash) { |
4201 | if_proto_ref(proto); |
4202 | tmp_ifproto_arr[tmp_ifproto_arr_idx] = proto; |
4203 | tmp_ifproto_arr_idx++; |
4204 | } |
4205 | } |
4206 | VERIFY(if_proto_count == tmp_ifproto_arr_idx); |
4207 | } |
4208 | ifnet_lock_done(ifp); |
4209 | |
4210 | for (tmp_ifproto_arr_idx = 0; tmp_ifproto_arr_idx < if_proto_count; |
4211 | tmp_ifproto_arr_idx++) { |
4212 | proto = tmp_ifproto_arr[tmp_ifproto_arr_idx]; |
4213 | VERIFY(proto != NULL); |
4214 | proto_media_event eventp = |
4215 | (proto->proto_kpi == kProtoKPI_v1 ? |
4216 | proto->kpi.v1.event : |
4217 | proto->kpi.v2.event); |
4218 | |
4219 | if (eventp != NULL) { |
4220 | eventp(ifp, proto->protocol_family, |
4221 | event); |
4222 | } |
4223 | if_proto_free(proto); |
4224 | } |
4225 | |
4226 | cleanup: |
4227 | if (tmp_malloc) { |
4228 | FREE(tmp_ifproto_arr, M_TEMP); |
4229 | } |
4230 | |
4231 | /* Pass the event to the interface */ |
4232 | if (ifp->if_event != NULL) |
4233 | ifp->if_event(ifp, event); |
4234 | |
4235 | /* Release the io ref count */ |
4236 | ifnet_decr_iorefcnt(ifp); |
4237 | done: |
4238 | return (dlil_post_complete_msg(update_generation ? ifp : NULL, event)); |
4239 | } |
4240 | |
4241 | errno_t |
4242 | ifnet_event(ifnet_t ifp, struct kern_event_msg *event) |
4243 | { |
4244 | struct kev_msg kev_msg; |
4245 | int result = 0; |
4246 | |
4247 | if (ifp == NULL || event == NULL) |
4248 | return (EINVAL); |
4249 | |
4250 | bzero(&kev_msg, sizeof (kev_msg)); |
4251 | kev_msg.vendor_code = event->vendor_code; |
4252 | kev_msg.kev_class = event->kev_class; |
4253 | kev_msg.kev_subclass = event->kev_subclass; |
4254 | kev_msg.event_code = event->event_code; |
4255 | kev_msg.dv[0].data_ptr = &event->event_data[0]; |
4256 | kev_msg.dv[0].data_length = event->total_size - KEV_MSG_HEADER_SIZE; |
4257 | kev_msg.dv[1].data_length = 0; |
4258 | |
4259 | result = dlil_event_internal(ifp, &kev_msg, TRUE); |
4260 | |
4261 | return (result); |
4262 | } |
4263 | |
4264 | #if CONFIG_MACF_NET |
4265 | #include <netinet/ip6.h> |
4266 | #include <netinet/ip.h> |
4267 | static int |
4268 | dlil_get_socket_type(struct mbuf **mp, int family, int raw) |
4269 | { |
4270 | struct mbuf *m; |
4271 | struct ip *ip; |
4272 | struct ip6_hdr *ip6; |
4273 | int type = SOCK_RAW; |
4274 | |
4275 | if (!raw) { |
4276 | switch (family) { |
4277 | case PF_INET: |
4278 | m = m_pullup(*mp, sizeof(struct ip)); |
4279 | if (m == NULL) |
4280 | break; |
4281 | *mp = m; |
4282 | ip = mtod(m, struct ip *); |
4283 | if (ip->ip_p == IPPROTO_TCP) |
4284 | type = SOCK_STREAM; |
4285 | else if (ip->ip_p == IPPROTO_UDP) |
4286 | type = SOCK_DGRAM; |
4287 | break; |
4288 | case PF_INET6: |
4289 | m = m_pullup(*mp, sizeof(struct ip6_hdr)); |
4290 | if (m == NULL) |
4291 | break; |
4292 | *mp = m; |
4293 | ip6 = mtod(m, struct ip6_hdr *); |
4294 | if (ip6->ip6_nxt == IPPROTO_TCP) |
4295 | type = SOCK_STREAM; |
4296 | else if (ip6->ip6_nxt == IPPROTO_UDP) |
4297 | type = SOCK_DGRAM; |
4298 | break; |
4299 | } |
4300 | } |
4301 | |
4302 | return (type); |
4303 | } |
4304 | #endif |
4305 | |
4306 | static void |
4307 | dlil_count_chain_len(mbuf_t m, struct chain_len_stats *cls) |
4308 | { |
4309 | mbuf_t n = m; |
4310 | int chainlen = 0; |
4311 | |
4312 | while (n != NULL) { |
4313 | chainlen++; |
4314 | n = n->m_next; |
4315 | } |
4316 | switch (chainlen) { |
4317 | case 0: |
4318 | break; |
4319 | case 1: |
4320 | atomic_add_64(&cls->cls_one, 1); |
4321 | break; |
4322 | case 2: |
4323 | atomic_add_64(&cls->cls_two, 1); |
4324 | break; |
4325 | case 3: |
4326 | atomic_add_64(&cls->cls_three, 1); |
4327 | break; |
4328 | case 4: |
4329 | atomic_add_64(&cls->cls_four, 1); |
4330 | break; |
4331 | case 5: |
4332 | default: |
4333 | atomic_add_64(&cls->cls_five_or_more, 1); |
4334 | break; |
4335 | } |
4336 | } |
4337 | |
4338 | /* |
4339 | * dlil_output |
4340 | * |
4341 | * Caller should have a lock on the protocol domain if the protocol |
4342 | * doesn't support finer grained locking. In most cases, the lock |
4343 | * will be held from the socket layer and won't be released until |
4344 | * we return back to the socket layer. |
4345 | * |
4346 | * This does mean that we must take a protocol lock before we take |
4347 | * an interface lock if we're going to take both. This makes sense |
4348 | * because a protocol is likely to interact with an ifp while it |
4349 | * is under the protocol lock. |
4350 | * |
4351 | * An advisory code will be returned if adv is not null. This |
4352 | * can be used to provide feedback about interface queues to the |
4353 | * application. |
4354 | */ |
4355 | errno_t |
4356 | dlil_output(ifnet_t ifp, protocol_family_t proto_family, mbuf_t packetlist, |
4357 | void *route, const struct sockaddr *dest, int raw, struct flowadv *adv) |
4358 | { |
4359 | char *frame_type = NULL; |
4360 | char *dst_linkaddr = NULL; |
4361 | int retval = 0; |
4362 | char frame_type_buffer[MAX_FRAME_TYPE_SIZE * 4]; |
4363 | char dst_linkaddr_buffer[MAX_LINKADDR * 4]; |
4364 | struct if_proto *proto = NULL; |
4365 | mbuf_t m = NULL; |
4366 | mbuf_t send_head = NULL; |
4367 | mbuf_t *send_tail = &send_head; |
4368 | int iorefcnt = 0; |
4369 | u_int32_t pre = 0, post = 0; |
4370 | u_int32_t fpkts = 0, fbytes = 0; |
4371 | int32_t flen = 0; |
4372 | struct timespec now; |
4373 | u_int64_t now_nsec; |
4374 | boolean_t did_clat46 = FALSE; |
4375 | protocol_family_t old_proto_family = proto_family; |
4376 | struct rtentry *rt = NULL; |
4377 | |
4378 | KERNEL_DEBUG(DBG_FNC_DLIL_OUTPUT | DBG_FUNC_START, 0, 0, 0, 0, 0); |
4379 | |
4380 | /* |
4381 | * Get an io refcnt if the interface is attached to prevent ifnet_detach |
4382 | * from happening while this operation is in progress |
4383 | */ |
4384 | if (!ifnet_is_attached(ifp, 1)) { |
4385 | retval = ENXIO; |
4386 | goto cleanup; |
4387 | } |
4388 | iorefcnt = 1; |
4389 | |
4390 | VERIFY(ifp->if_output_dlil != NULL); |
4391 | |
4392 | /* update the driver's multicast filter, if needed */ |
4393 | if (ifp->if_updatemcasts > 0 && if_mcasts_update(ifp) == 0) |
4394 | ifp->if_updatemcasts = 0; |
4395 | |
4396 | frame_type = frame_type_buffer; |
4397 | dst_linkaddr = dst_linkaddr_buffer; |
4398 | |
4399 | if (raw == 0) { |
4400 | ifnet_lock_shared(ifp); |
4401 | /* callee holds a proto refcnt upon success */ |
4402 | proto = find_attached_proto(ifp, proto_family); |
4403 | if (proto == NULL) { |
4404 | ifnet_lock_done(ifp); |
4405 | retval = ENXIO; |
4406 | goto cleanup; |
4407 | } |
4408 | ifnet_lock_done(ifp); |
4409 | } |
4410 | |
4411 | preout_again: |
4412 | if (packetlist == NULL) |
4413 | goto cleanup; |
4414 | |
4415 | m = packetlist; |
4416 | packetlist = packetlist->m_nextpkt; |
4417 | m->m_nextpkt = NULL; |
4418 | |
4419 | /* |
4420 | * Perform address family translation for the first |
4421 | * packet outside the loop in order to perform address |
4422 | * lookup for the translated proto family. |
4423 | */ |
4424 | if (proto_family == PF_INET && IS_INTF_CLAT46(ifp) && |
4425 | (ifp->if_type == IFT_CELLULAR || |
4426 | dlil_is_clat_needed(proto_family, m))) { |
4427 | retval = dlil_clat46(ifp, &proto_family, &m); |
4428 | /* |
4429 | * Go to the next packet if translation fails |
4430 | */ |
4431 | if (retval != 0) { |
4432 | m_freem(m); |
4433 | m = NULL; |
4434 | ip6stat.ip6s_clat464_out_drop++; |
4435 | /* Make sure that the proto family is PF_INET */ |
4436 | ASSERT(proto_family == PF_INET); |
4437 | goto preout_again; |
4438 | } |
4439 | /* |
4440 | * Free the old one and make it point to the IPv6 proto structure. |
4441 | * |
4442 | * Change proto for the first time we have successfully |
4443 | * performed address family translation. |
4444 | */ |
4445 | if (!did_clat46 && proto_family == PF_INET6) { |
4446 | struct sockaddr_in6 dest6; |
4447 | did_clat46 = TRUE; |
4448 | |
4449 | if (proto != NULL) |
4450 | if_proto_free(proto); |
4451 | ifnet_lock_shared(ifp); |
4452 | /* callee holds a proto refcnt upon success */ |
4453 | proto = find_attached_proto(ifp, proto_family); |
4454 | if (proto == NULL) { |
4455 | ifnet_lock_done(ifp); |
4456 | retval = ENXIO; |
4457 | m_freem(m); |
4458 | m = NULL; |
4459 | goto cleanup; |
4460 | } |
4461 | ifnet_lock_done(ifp); |
4462 | if (ifp->if_type == IFT_ETHER) { |
4463 | /* Update the dest to translated v6 address */ |
4464 | dest6.sin6_len = sizeof(struct sockaddr_in6); |
4465 | dest6.sin6_family = AF_INET6; |
4466 | dest6.sin6_addr = (mtod(m, struct ip6_hdr *))->ip6_dst; |
4467 | dest = (const struct sockaddr *)&dest6; |
4468 | |
4469 | /* |
4470 | * Lookup route to the translated destination |
4471 | * Free this route ref during cleanup |
4472 | */ |
4473 | rt = rtalloc1_scoped((struct sockaddr *)&dest6, |
4474 | 0, 0, ifp->if_index); |
4475 | |
4476 | route = rt; |
4477 | } |
4478 | } |
4479 | } |
4480 | |
4481 | /* |
4482 | * This path gets packet chain going to the same destination. |
4483 | * The pre output routine is used to either trigger resolution of |
4484 | * the next hop or retreive the next hop's link layer addressing. |
4485 | * For ex: ether_inet(6)_pre_output routine. |
4486 | * |
4487 | * If the routine returns EJUSTRETURN, it implies that packet has |
4488 | * been queued, and therefore we have to call preout_again for the |
4489 | * following packet in the chain. |
4490 | * |
4491 | * For errors other than EJUSTRETURN, the current packet is freed |
4492 | * and the rest of the chain (pointed by packetlist is freed as |
4493 | * part of clean up. |
4494 | * |
4495 | * Else if there is no error the retrieved information is used for |
4496 | * all the packets in the chain. |
4497 | */ |
4498 | if (raw == 0) { |
4499 | proto_media_preout preoutp = (proto->proto_kpi == kProtoKPI_v1 ? |
4500 | proto->kpi.v1.pre_output : proto->kpi.v2.pre_output); |
4501 | retval = 0; |
4502 | if (preoutp != NULL) { |
4503 | retval = preoutp(ifp, proto_family, &m, dest, route, |
4504 | frame_type, dst_linkaddr); |
4505 | |
4506 | if (retval != 0) { |
4507 | if (retval == EJUSTRETURN) |
4508 | goto preout_again; |
4509 | m_freem(m); |
4510 | m = NULL; |
4511 | goto cleanup; |
4512 | } |
4513 | } |
4514 | } |
4515 | |
4516 | #if CONFIG_MACF_NET |
4517 | retval = mac_ifnet_check_transmit(ifp, m, proto_family, |
4518 | dlil_get_socket_type(&m, proto_family, raw)); |
4519 | if (retval != 0) { |
4520 | m_freem(m); |
4521 | goto cleanup; |
4522 | } |
4523 | #endif |
4524 | |
4525 | do { |
4526 | /* |
4527 | * Perform address family translation if needed. |
4528 | * For now we only support stateless 4 to 6 translation |
4529 | * on the out path. |
4530 | * |
4531 | * The routine below translates IP header, updates protocol |
4532 | * checksum and also translates ICMP. |
4533 | * |
4534 | * We skip the first packet as it is already translated and |
4535 | * the proto family is set to PF_INET6. |
4536 | */ |
4537 | if (proto_family == PF_INET && IS_INTF_CLAT46(ifp) && |
4538 | (ifp->if_type == IFT_CELLULAR || |
4539 | dlil_is_clat_needed(proto_family, m))) { |
4540 | retval = dlil_clat46(ifp, &proto_family, &m); |
4541 | /* Goto the next packet if the translation fails */ |
4542 | if (retval != 0) { |
4543 | m_freem(m); |
4544 | m = NULL; |
4545 | ip6stat.ip6s_clat464_out_drop++; |
4546 | goto next; |
4547 | } |
4548 | } |
4549 | |
4550 | #if CONFIG_DTRACE |
4551 | if (!raw && proto_family == PF_INET) { |
4552 | struct ip *ip = mtod(m, struct ip *); |
4553 | DTRACE_IP6(send, struct mbuf *, m, struct inpcb *, NULL, |
4554 | struct ip *, ip, struct ifnet *, ifp, |
4555 | struct ip *, ip, struct ip6_hdr *, NULL); |
4556 | |
4557 | } else if (!raw && proto_family == PF_INET6) { |
4558 | struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *); |
4559 | DTRACE_IP6(send, struct mbuf *, m, struct inpcb *, NULL, |
4560 | struct ip6_hdr *, ip6, struct ifnet *, ifp, |
4561 | struct ip *, NULL, struct ip6_hdr *, ip6); |
4562 | } |
4563 | #endif /* CONFIG_DTRACE */ |
4564 | |
4565 | if (raw == 0 && ifp->if_framer != NULL) { |
4566 | int rcvif_set = 0; |
4567 | |
4568 | /* |
4569 | * If this is a broadcast packet that needs to be |
4570 | * looped back into the system, set the inbound ifp |
4571 | * to that of the outbound ifp. This will allow |
4572 | * us to determine that it is a legitimate packet |
4573 | * for the system. Only set the ifp if it's not |
4574 | * already set, just to be safe. |
4575 | */ |
4576 | if ((m->m_flags & (M_BCAST | M_LOOP)) && |
4577 | m->m_pkthdr.rcvif == NULL) { |
4578 | m->m_pkthdr.rcvif = ifp; |
4579 | rcvif_set = 1; |
4580 | } |
4581 | |
4582 | retval = ifp->if_framer(ifp, &m, dest, dst_linkaddr, |
4583 | frame_type, &pre, &post); |
4584 | if (retval != 0) { |
4585 | if (retval != EJUSTRETURN) |
4586 | m_freem(m); |
4587 | goto next; |
4588 | } |
4589 | |
4590 | /* |
4591 | * For partial checksum offload, adjust the start |
4592 | * and stuff offsets based on the prepended header. |
4593 | */ |
4594 | if ((m->m_pkthdr.csum_flags & |
4595 | (CSUM_DATA_VALID | CSUM_PARTIAL)) == |
4596 | (CSUM_DATA_VALID | CSUM_PARTIAL)) { |
4597 | m->m_pkthdr.csum_tx_stuff += pre; |
4598 | m->m_pkthdr.csum_tx_start += pre; |
4599 | } |
4600 | |
4601 | if (hwcksum_dbg != 0 && !(ifp->if_flags & IFF_LOOPBACK)) |
4602 | dlil_output_cksum_dbg(ifp, m, pre, |
4603 | proto_family); |
4604 | |
4605 | /* |
4606 | * Clear the ifp if it was set above, and to be |
4607 | * safe, only if it is still the same as the |
4608 | * outbound ifp we have in context. If it was |
4609 | * looped back, then a copy of it was sent to the |
4610 | * loopback interface with the rcvif set, and we |
4611 | * are clearing the one that will go down to the |
4612 | * layer below. |
4613 | */ |
4614 | if (rcvif_set && m->m_pkthdr.rcvif == ifp) |
4615 | m->m_pkthdr.rcvif = NULL; |
4616 | } |
4617 | |
4618 | /* |
4619 | * Let interface filters (if any) do their thing ... |
4620 | */ |
4621 | /* Do not pass VLAN tagged packets to filters PR-3586856 */ |
4622 | if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) == 0) { |
4623 | retval = dlil_interface_filters_output(ifp, |
4624 | &m, proto_family); |
4625 | if (retval != 0) { |
4626 | if (retval != EJUSTRETURN) |
4627 | m_freem(m); |
4628 | goto next; |
4629 | } |
4630 | } |
4631 | /* |
4632 | * Strip away M_PROTO1 bit prior to sending packet |
4633 | * to the driver as this field may be used by the driver |
4634 | */ |
4635 | m->m_flags &= ~M_PROTO1; |
4636 | |
4637 | /* |
4638 | * If the underlying interface is not capable of handling a |
4639 | * packet whose data portion spans across physically disjoint |
4640 | * pages, we need to "normalize" the packet so that we pass |
4641 | * down a chain of mbufs where each mbuf points to a span that |
4642 | * resides in the system page boundary. If the packet does |
4643 | * not cross page(s), the following is a no-op. |
4644 | */ |
4645 | if (!(ifp->if_hwassist & IFNET_MULTIPAGES)) { |
4646 | if ((m = m_normalize(m)) == NULL) |
4647 | goto next; |
4648 | } |
4649 | |
4650 | /* |
4651 | * If this is a TSO packet, make sure the interface still |
4652 | * advertise TSO capability. |
4653 | */ |
4654 | if (TSO_IPV4_NOTOK(ifp, m) || TSO_IPV6_NOTOK(ifp, m)) { |
4655 | retval = EMSGSIZE; |
4656 | m_freem(m); |
4657 | goto cleanup; |
4658 | } |
4659 | |
4660 | ifp_inc_traffic_class_out(ifp, m); |
4661 | pktap_output(ifp, proto_family, m, pre, post); |
4662 | |
4663 | /* |
4664 | * Count the number of elements in the mbuf chain |
4665 | */ |
4666 | if (tx_chain_len_count) { |
4667 | dlil_count_chain_len(m, &tx_chain_len_stats); |
4668 | } |
4669 | |
4670 | /* |
4671 | * Record timestamp; ifnet_enqueue() will use this info |
4672 | * rather than redoing the work. An optimization could |
4673 | * involve doing this just once at the top, if there are |
4674 | * no interface filters attached, but that's probably |
4675 | * not a big deal. |
4676 | */ |
4677 | nanouptime(&now); |
4678 | net_timernsec(&now, &now_nsec); |
4679 | (void) mbuf_set_timestamp(m, now_nsec, TRUE); |
4680 | |
4681 | /* |
4682 | * Discard partial sum information if this packet originated |
4683 | * from another interface; the packet would already have the |
4684 | * final checksum and we shouldn't recompute it. |
4685 | */ |
4686 | if ((m->m_pkthdr.pkt_flags & PKTF_FORWARDED) && |
4687 | (m->m_pkthdr.csum_flags & (CSUM_DATA_VALID|CSUM_PARTIAL)) == |
4688 | (CSUM_DATA_VALID|CSUM_PARTIAL)) { |
4689 | m->m_pkthdr.csum_flags &= ~CSUM_TX_FLAGS; |
4690 | m->m_pkthdr.csum_data = 0; |
4691 | } |
4692 | |
4693 | /* |
4694 | * Finally, call the driver. |
4695 | */ |
4696 | if (ifp->if_eflags & (IFEF_SENDLIST | IFEF_ENQUEUE_MULTI)) { |
4697 | if (m->m_pkthdr.pkt_flags & PKTF_FORWARDED) { |
4698 | flen += (m_pktlen(m) - (pre + post)); |
4699 | m->m_pkthdr.pkt_flags &= ~PKTF_FORWARDED; |
4700 | } |
4701 | *send_tail = m; |
4702 | send_tail = &m->m_nextpkt; |
4703 | } else { |
4704 | if (m->m_pkthdr.pkt_flags & PKTF_FORWARDED) { |
4705 | flen = (m_pktlen(m) - (pre + post)); |
4706 | m->m_pkthdr.pkt_flags &= ~PKTF_FORWARDED; |
4707 | } else { |
4708 | flen = 0; |
4709 | } |
4710 | KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_START, |
4711 | 0, 0, 0, 0, 0); |
4712 | retval = (*ifp->if_output_dlil)(ifp, m); |
4713 | if (retval == EQFULL || retval == EQSUSPENDED) { |
4714 | if (adv != NULL && adv->code == FADV_SUCCESS) { |
4715 | adv->code = (retval == EQFULL ? |
4716 | FADV_FLOW_CONTROLLED : |
4717 | FADV_SUSPENDED); |
4718 | } |
4719 | retval = 0; |
4720 | } |
4721 | if (retval == 0 && flen > 0) { |
4722 | fbytes += flen; |
4723 | fpkts++; |
4724 | } |
4725 | if (retval != 0 && dlil_verbose) { |
4726 | printf("%s: output error on %s retval = %d\n" , |
4727 | __func__, if_name(ifp), |
4728 | retval); |
4729 | } |
4730 | KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_END, |
4731 | 0, 0, 0, 0, 0); |
4732 | } |
4733 | KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_END, 0, 0, 0, 0, 0); |
4734 | |
4735 | next: |
4736 | m = packetlist; |
4737 | if (m != NULL) { |
4738 | packetlist = packetlist->m_nextpkt; |
4739 | m->m_nextpkt = NULL; |
4740 | } |
4741 | /* Reset the proto family to old proto family for CLAT */ |
4742 | if (did_clat46) |
4743 | proto_family = old_proto_family; |
4744 | } while (m != NULL); |
4745 | |
4746 | if (send_head != NULL) { |
4747 | KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_START, |
4748 | 0, 0, 0, 0, 0); |
4749 | if (ifp->if_eflags & IFEF_SENDLIST) { |
4750 | retval = (*ifp->if_output_dlil)(ifp, send_head); |
4751 | if (retval == EQFULL || retval == EQSUSPENDED) { |
4752 | if (adv != NULL) { |
4753 | adv->code = (retval == EQFULL ? |
4754 | FADV_FLOW_CONTROLLED : |
4755 | FADV_SUSPENDED); |
4756 | } |
4757 | retval = 0; |
4758 | } |
4759 | if (retval == 0 && flen > 0) { |
4760 | fbytes += flen; |
4761 | fpkts++; |
4762 | } |
4763 | if (retval != 0 && dlil_verbose) { |
4764 | printf("%s: output error on %s retval = %d\n" , |
4765 | __func__, if_name(ifp), retval); |
4766 | } |
4767 | } else { |
4768 | struct mbuf *send_m; |
4769 | int enq_cnt = 0; |
4770 | VERIFY(ifp->if_eflags & IFEF_ENQUEUE_MULTI); |
4771 | while (send_head != NULL) { |
4772 | send_m = send_head; |
4773 | send_head = send_m->m_nextpkt; |
4774 | send_m->m_nextpkt = NULL; |
4775 | retval = (*ifp->if_output_dlil)(ifp, send_m); |
4776 | if (retval == EQFULL || retval == EQSUSPENDED) { |
4777 | if (adv != NULL) { |
4778 | adv->code = (retval == EQFULL ? |
4779 | FADV_FLOW_CONTROLLED : |
4780 | FADV_SUSPENDED); |
4781 | } |
4782 | retval = 0; |
4783 | } |
4784 | if (retval == 0) { |
4785 | enq_cnt++; |
4786 | if (flen > 0) |
4787 | fpkts++; |
4788 | } |
4789 | if (retval != 0 && dlil_verbose) { |
4790 | printf("%s: output error on %s " |
4791 | "retval = %d\n" , |
4792 | __func__, if_name(ifp), retval); |
4793 | } |
4794 | } |
4795 | if (enq_cnt > 0) { |
4796 | fbytes += flen; |
4797 | ifnet_start(ifp); |
4798 | } |
4799 | } |
4800 | KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_END, 0, 0, 0, 0, 0); |
4801 | } |
4802 | |
4803 | KERNEL_DEBUG(DBG_FNC_DLIL_OUTPUT | DBG_FUNC_END, 0, 0, 0, 0, 0); |
4804 | |
4805 | cleanup: |
4806 | if (fbytes > 0) |
4807 | ifp->if_fbytes += fbytes; |
4808 | if (fpkts > 0) |
4809 | ifp->if_fpackets += fpkts; |
4810 | if (proto != NULL) |
4811 | if_proto_free(proto); |
4812 | if (packetlist) /* if any packets are left, clean up */ |
4813 | mbuf_freem_list(packetlist); |
4814 | if (retval == EJUSTRETURN) |
4815 | retval = 0; |
4816 | if (iorefcnt == 1) |
4817 | ifnet_decr_iorefcnt(ifp); |
4818 | if (rt != NULL) { |
4819 | rtfree(rt); |
4820 | rt = NULL; |
4821 | } |
4822 | |
4823 | return (retval); |
4824 | } |
4825 | |
4826 | /* |
4827 | * This routine checks if the destination address is not a loopback, link-local, |
4828 | * multicast or broadcast address. |
4829 | */ |
4830 | static int |
4831 | dlil_is_clat_needed(protocol_family_t proto_family, mbuf_t m) |
4832 | { |
4833 | int ret = 0; |
4834 | switch(proto_family) { |
4835 | case PF_INET: { |
4836 | struct ip *iph = mtod(m, struct ip *); |
4837 | if (CLAT46_NEEDED(ntohl(iph->ip_dst.s_addr))) |
4838 | ret = 1; |
4839 | break; |
4840 | } |
4841 | case PF_INET6: { |
4842 | struct ip6_hdr *ip6h = mtod(m, struct ip6_hdr *); |
4843 | if ((size_t)m_pktlen(m) >= sizeof(struct ip6_hdr) && |
4844 | CLAT64_NEEDED(&ip6h->ip6_dst)) |
4845 | ret = 1; |
4846 | break; |
4847 | } |
4848 | } |
4849 | |
4850 | return (ret); |
4851 | } |
4852 | /* |
4853 | * @brief This routine translates IPv4 packet to IPv6 packet, |
4854 | * updates protocol checksum and also translates ICMP for code |
4855 | * along with inner header translation. |
4856 | * |
4857 | * @param ifp Pointer to the interface |
4858 | * @param proto_family pointer to protocol family. It is updated if function |
4859 | * performs the translation successfully. |
4860 | * @param m Pointer to the pointer pointing to the packet. Needed because this |
4861 | * routine can end up changing the mbuf to a different one. |
4862 | * |
4863 | * @return 0 on success or else a negative value. |
4864 | */ |
4865 | static errno_t |
4866 | dlil_clat46(ifnet_t ifp, protocol_family_t *proto_family, mbuf_t *m) |
4867 | { |
4868 | VERIFY(*proto_family == PF_INET); |
4869 | VERIFY(IS_INTF_CLAT46(ifp)); |
4870 | |
4871 | pbuf_t pbuf_store, *pbuf = NULL; |
4872 | struct ip *iph = NULL; |
4873 | struct in_addr osrc, odst; |
4874 | uint8_t proto = 0; |
4875 | struct in6_ifaddr *ia6_clat_src = NULL; |
4876 | struct in6_addr *src = NULL; |
4877 | struct in6_addr dst; |
4878 | int error = 0; |
4879 | uint32_t off = 0; |
4880 | uint64_t tot_len = 0; |
4881 | uint16_t ip_id_val = 0; |
4882 | uint16_t ip_frag_off = 0; |
4883 | |
4884 | boolean_t is_frag = FALSE; |
4885 | boolean_t is_first_frag = TRUE; |
4886 | boolean_t is_last_frag = TRUE; |
4887 | |
4888 | pbuf_init_mbuf(&pbuf_store, *m, ifp); |
4889 | pbuf = &pbuf_store; |
4890 | iph = pbuf->pb_data; |
4891 | |
4892 | osrc = iph->ip_src; |
4893 | odst = iph->ip_dst; |
4894 | proto = iph->ip_p; |
4895 | off = iph->ip_hl << 2; |
4896 | ip_id_val = iph->ip_id; |
4897 | ip_frag_off = ntohs(iph->ip_off) & IP_OFFMASK; |
4898 | |
4899 | tot_len = ntohs(iph->ip_len); |
4900 | |
4901 | /* |
4902 | * For packets that are not first frags |
4903 | * we only need to adjust CSUM. |
4904 | * For 4 to 6, Fragmentation header gets appended |
4905 | * after proto translation. |
4906 | */ |
4907 | if (ntohs(iph->ip_off) & ~(IP_DF | IP_RF)) { |
4908 | is_frag = TRUE; |
4909 | |
4910 | /* If the offset is not zero, it is not first frag */ |
4911 | if (ip_frag_off != 0) |
4912 | is_first_frag = FALSE; |
4913 | |
4914 | /* If IP_MF is set, then it is not last frag */ |
4915 | if (ntohs(iph->ip_off) & IP_MF) |
4916 | is_last_frag = FALSE; |
4917 | } |
4918 | |
4919 | /* |
4920 | * Retrive the local IPv6 CLAT46 address reserved for stateless |
4921 | * translation. |
4922 | */ |
4923 | ia6_clat_src = in6ifa_ifpwithflag(ifp, IN6_IFF_CLAT46); |
4924 | if (ia6_clat_src == NULL) { |
4925 | ip6stat.ip6s_clat464_out_nov6addr_drop++; |
4926 | error = -1; |
4927 | goto cleanup; |
4928 | } |
4929 | |
4930 | src = &ia6_clat_src->ia_addr.sin6_addr; |
4931 | |
4932 | /* |
4933 | * Translate IPv4 destination to IPv6 destination by using the |
4934 | * prefixes learned through prior PLAT discovery. |
4935 | */ |
4936 | if ((error = nat464_synthesize_ipv6(ifp, &odst, &dst)) != 0) { |
4937 | ip6stat.ip6s_clat464_out_v6synthfail_drop++; |
4938 | goto cleanup; |
4939 | } |
4940 | |
4941 | /* Translate the IP header part first */ |
4942 | error = (nat464_translate_46(pbuf, off, iph->ip_tos, iph->ip_p, |
4943 | iph->ip_ttl, *src, dst, tot_len) == NT_NAT64) ? 0 : -1; |
4944 | |
4945 | iph = NULL; /* Invalidate iph as pbuf has been modified */ |
4946 | |
4947 | if (error != 0) { |
4948 | ip6stat.ip6s_clat464_out_46transfail_drop++; |
4949 | goto cleanup; |
4950 | } |
4951 | |
4952 | /* |
4953 | * Translate protocol header, update checksum, checksum flags |
4954 | * and related fields. |
4955 | */ |
4956 | error = (nat464_translate_proto(pbuf, (struct nat464_addr *)&osrc, (struct nat464_addr *)&odst, |
4957 | proto, PF_INET, PF_INET6, NT_OUT, !is_first_frag) == NT_NAT64) ? 0 : -1; |
4958 | |
4959 | if (error != 0) { |
4960 | ip6stat.ip6s_clat464_out_46proto_transfail_drop++; |
4961 | goto cleanup; |
4962 | } |
4963 | |
4964 | /* Now insert the IPv6 fragment header */ |
4965 | if (is_frag) { |
4966 | error = nat464_insert_frag46(pbuf, ip_id_val, ip_frag_off, is_last_frag); |
4967 | |
4968 | if (error != 0) { |
4969 | ip6stat.ip6s_clat464_out_46frag_transfail_drop++; |
4970 | goto cleanup; |
4971 | } |
4972 | } |
4973 | |
4974 | cleanup: |
4975 | if (ia6_clat_src != NULL) |
4976 | IFA_REMREF(&ia6_clat_src->ia_ifa); |
4977 | |
4978 | if (pbuf_is_valid(pbuf)) { |
4979 | *m = pbuf->pb_mbuf; |
4980 | pbuf->pb_mbuf = NULL; |
4981 | pbuf_destroy(pbuf); |
4982 | } else { |
4983 | error = -1; |
4984 | ip6stat.ip6s_clat464_out_invalpbuf_drop++; |
4985 | } |
4986 | |
4987 | if (error == 0) { |
4988 | *proto_family = PF_INET6; |
4989 | ip6stat.ip6s_clat464_out_success++; |
4990 | } |
4991 | |
4992 | return (error); |
4993 | } |
4994 | |
4995 | /* |
4996 | * @brief This routine translates incoming IPv6 to IPv4 packet, |
4997 | * updates protocol checksum and also translates ICMPv6 outer |
4998 | * and inner headers |
4999 | * |
5000 | * @return 0 on success or else a negative value. |
5001 | */ |
5002 | static errno_t |
5003 | dlil_clat64(ifnet_t ifp, protocol_family_t *proto_family, mbuf_t *m) |
5004 | { |
5005 | VERIFY(*proto_family == PF_INET6); |
5006 | VERIFY(IS_INTF_CLAT46(ifp)); |
5007 | |
5008 | struct ip6_hdr *ip6h = NULL; |
5009 | struct in6_addr osrc, odst; |
5010 | uint8_t proto = 0; |
5011 | struct in6_ifaddr *ia6_clat_dst = NULL; |
5012 | struct in_ifaddr *ia4_clat_dst = NULL; |
5013 | struct in_addr *dst = NULL; |
5014 | struct in_addr src; |
5015 | int error = 0; |
5016 | uint32_t off = 0; |
5017 | u_int64_t tot_len = 0; |
5018 | uint8_t tos = 0; |
5019 | boolean_t is_first_frag = TRUE; |
5020 | |
5021 | /* Incoming mbuf does not contain valid IP6 header */ |
5022 | if ((size_t)(*m)->m_pkthdr.len < sizeof(struct ip6_hdr) || |
5023 | ((size_t)(*m)->m_len < sizeof(struct ip6_hdr) && |
5024 | (*m = m_pullup(*m, sizeof(struct ip6_hdr))) == NULL)) { |
5025 | ip6stat.ip6s_clat464_in_tooshort_drop++; |
5026 | return (-1); |
5027 | } |
5028 | |
5029 | ip6h = mtod(*m, struct ip6_hdr *); |
5030 | /* Validate that mbuf contains IP payload equal to ip6_plen */ |
5031 | if ((size_t)(*m)->m_pkthdr.len < ntohs(ip6h->ip6_plen) + sizeof(struct ip6_hdr)) { |
5032 | ip6stat.ip6s_clat464_in_tooshort_drop++; |
5033 | return (-1); |
5034 | } |
5035 | |
5036 | osrc = ip6h->ip6_src; |
5037 | odst = ip6h->ip6_dst; |
5038 | |
5039 | /* |
5040 | * Retrieve the local CLAT46 reserved IPv6 address. |
5041 | * Let the packet pass if we don't find one, as the flag |
5042 | * may get set before IPv6 configuration has taken place. |
5043 | */ |
5044 | ia6_clat_dst = in6ifa_ifpwithflag(ifp, IN6_IFF_CLAT46); |
5045 | if (ia6_clat_dst == NULL) |
5046 | goto done; |
5047 | |
5048 | /* |
5049 | * Check if the original dest in the packet is same as the reserved |
5050 | * CLAT46 IPv6 address |
5051 | */ |
5052 | if (IN6_ARE_ADDR_EQUAL(&odst, &ia6_clat_dst->ia_addr.sin6_addr)) { |
5053 | pbuf_t pbuf_store, *pbuf = NULL; |
5054 | pbuf_init_mbuf(&pbuf_store, *m, ifp); |
5055 | pbuf = &pbuf_store; |
5056 | |
5057 | /* |
5058 | * Retrive the local CLAT46 IPv4 address reserved for stateless |
5059 | * translation. |
5060 | */ |
5061 | ia4_clat_dst = inifa_ifpclatv4(ifp); |
5062 | if (ia4_clat_dst == NULL) { |
5063 | IFA_REMREF(&ia6_clat_dst->ia_ifa); |
5064 | ip6stat.ip6s_clat464_in_nov4addr_drop++; |
5065 | error = -1; |
5066 | goto cleanup; |
5067 | } |
5068 | IFA_REMREF(&ia6_clat_dst->ia_ifa); |
5069 | |
5070 | /* Translate IPv6 src to IPv4 src by removing the NAT64 prefix */ |
5071 | dst = &ia4_clat_dst->ia_addr.sin_addr; |
5072 | if ((error = nat464_synthesize_ipv4(ifp, &osrc, &src)) != 0) { |
5073 | ip6stat.ip6s_clat464_in_v4synthfail_drop++; |
5074 | error = -1; |
5075 | goto cleanup; |
5076 | } |
5077 | |
5078 | ip6h = pbuf->pb_data; |
5079 | off = sizeof(struct ip6_hdr); |
5080 | proto = ip6h->ip6_nxt; |
5081 | tos = (ntohl(ip6h->ip6_flow) >> 20) & 0xff; |
5082 | tot_len = ntohs(ip6h->ip6_plen) + sizeof(struct ip6_hdr); |
5083 | |
5084 | /* |
5085 | * Translate the IP header and update the fragmentation |
5086 | * header if needed |
5087 | */ |
5088 | error = (nat464_translate_64(pbuf, off, tos, &proto, |
5089 | ip6h->ip6_hlim, src, *dst, tot_len, &is_first_frag) == NT_NAT64) ? |
5090 | 0 : -1; |
5091 | |
5092 | ip6h = NULL; /* Invalidate ip6h as pbuf has been changed */ |
5093 | |
5094 | if (error != 0) { |
5095 | ip6stat.ip6s_clat464_in_64transfail_drop++; |
5096 | goto cleanup; |
5097 | } |
5098 | |
5099 | /* |
5100 | * Translate protocol header, update checksum, checksum flags |
5101 | * and related fields. |
5102 | */ |
5103 | error = (nat464_translate_proto(pbuf, (struct nat464_addr *)&osrc, |
5104 | (struct nat464_addr *)&odst, proto, PF_INET6, PF_INET, |
5105 | NT_IN, !is_first_frag) == NT_NAT64) ? 0 : -1; |
5106 | |
5107 | if (error != 0) { |
5108 | ip6stat.ip6s_clat464_in_64proto_transfail_drop++; |
5109 | goto cleanup; |
5110 | } |
5111 | |
5112 | cleanup: |
5113 | if (ia4_clat_dst != NULL) |
5114 | IFA_REMREF(&ia4_clat_dst->ia_ifa); |
5115 | |
5116 | if (pbuf_is_valid(pbuf)) { |
5117 | *m = pbuf->pb_mbuf; |
5118 | pbuf->pb_mbuf = NULL; |
5119 | pbuf_destroy(pbuf); |
5120 | } else { |
5121 | error = -1; |
5122 | ip6stat.ip6s_clat464_in_invalpbuf_drop++; |
5123 | } |
5124 | |
5125 | if (error == 0) { |
5126 | *proto_family = PF_INET; |
5127 | ip6stat.ip6s_clat464_in_success++; |
5128 | } |
5129 | } /* CLAT traffic */ |
5130 | |
5131 | done: |
5132 | return (error); |
5133 | } |
5134 | |
5135 | errno_t |
5136 | ifnet_ioctl(ifnet_t ifp, protocol_family_t proto_fam, u_long ioctl_code, |
5137 | void *ioctl_arg) |
5138 | { |
5139 | struct ifnet_filter *filter; |
5140 | int retval = EOPNOTSUPP; |
5141 | int result = 0; |
5142 | |
5143 | if (ifp == NULL || ioctl_code == 0) |
5144 | return (EINVAL); |
5145 | |
5146 | /* Get an io ref count if the interface is attached */ |
5147 | if (!ifnet_is_attached(ifp, 1)) |
5148 | return (EOPNOTSUPP); |
5149 | |
5150 | /* |
5151 | * Run the interface filters first. |
5152 | * We want to run all filters before calling the protocol, |
5153 | * interface family, or interface. |
5154 | */ |
5155 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
5156 | /* prevent filter list from changing in case we drop the lock */ |
5157 | if_flt_monitor_busy(ifp); |
5158 | TAILQ_FOREACH(filter, &ifp->if_flt_head, filt_next) { |
5159 | if (filter->filt_ioctl != NULL && (filter->filt_protocol == 0 || |
5160 | filter->filt_protocol == proto_fam)) { |
5161 | lck_mtx_unlock(&ifp->if_flt_lock); |
5162 | |
5163 | result = filter->filt_ioctl(filter->filt_cookie, ifp, |
5164 | proto_fam, ioctl_code, ioctl_arg); |
5165 | |
5166 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
5167 | |
5168 | /* Only update retval if no one has handled the ioctl */ |
5169 | if (retval == EOPNOTSUPP || result == EJUSTRETURN) { |
5170 | if (result == ENOTSUP) |
5171 | result = EOPNOTSUPP; |
5172 | retval = result; |
5173 | if (retval != 0 && retval != EOPNOTSUPP) { |
5174 | /* we're done with the filter list */ |
5175 | if_flt_monitor_unbusy(ifp); |
5176 | lck_mtx_unlock(&ifp->if_flt_lock); |
5177 | goto cleanup; |
5178 | } |
5179 | } |
5180 | } |
5181 | } |
5182 | /* we're done with the filter list */ |
5183 | if_flt_monitor_unbusy(ifp); |
5184 | lck_mtx_unlock(&ifp->if_flt_lock); |
5185 | |
5186 | /* Allow the protocol to handle the ioctl */ |
5187 | if (proto_fam != 0) { |
5188 | struct if_proto *proto; |
5189 | |
5190 | /* callee holds a proto refcnt upon success */ |
5191 | ifnet_lock_shared(ifp); |
5192 | proto = find_attached_proto(ifp, proto_fam); |
5193 | ifnet_lock_done(ifp); |
5194 | if (proto != NULL) { |
5195 | proto_media_ioctl ioctlp = |
5196 | (proto->proto_kpi == kProtoKPI_v1 ? |
5197 | proto->kpi.v1.ioctl : proto->kpi.v2.ioctl); |
5198 | result = EOPNOTSUPP; |
5199 | if (ioctlp != NULL) |
5200 | result = ioctlp(ifp, proto_fam, ioctl_code, |
5201 | ioctl_arg); |
5202 | if_proto_free(proto); |
5203 | |
5204 | /* Only update retval if no one has handled the ioctl */ |
5205 | if (retval == EOPNOTSUPP || result == EJUSTRETURN) { |
5206 | if (result == ENOTSUP) |
5207 | result = EOPNOTSUPP; |
5208 | retval = result; |
5209 | if (retval && retval != EOPNOTSUPP) |
5210 | goto cleanup; |
5211 | } |
5212 | } |
5213 | } |
5214 | |
5215 | /* retval is either 0 or EOPNOTSUPP */ |
5216 | |
5217 | /* |
5218 | * Let the interface handle this ioctl. |
5219 | * If it returns EOPNOTSUPP, ignore that, we may have |
5220 | * already handled this in the protocol or family. |
5221 | */ |
5222 | if (ifp->if_ioctl) |
5223 | result = (*ifp->if_ioctl)(ifp, ioctl_code, ioctl_arg); |
5224 | |
5225 | /* Only update retval if no one has handled the ioctl */ |
5226 | if (retval == EOPNOTSUPP || result == EJUSTRETURN) { |
5227 | if (result == ENOTSUP) |
5228 | result = EOPNOTSUPP; |
5229 | retval = result; |
5230 | if (retval && retval != EOPNOTSUPP) { |
5231 | goto cleanup; |
5232 | } |
5233 | } |
5234 | |
5235 | cleanup: |
5236 | if (retval == EJUSTRETURN) |
5237 | retval = 0; |
5238 | |
5239 | ifnet_decr_iorefcnt(ifp); |
5240 | |
5241 | return (retval); |
5242 | } |
5243 | |
5244 | __private_extern__ errno_t |
5245 | dlil_set_bpf_tap(ifnet_t ifp, bpf_tap_mode mode, bpf_packet_func callback) |
5246 | { |
5247 | errno_t error = 0; |
5248 | |
5249 | |
5250 | if (ifp->if_set_bpf_tap) { |
5251 | /* Get an io reference on the interface if it is attached */ |
5252 | if (!ifnet_is_attached(ifp, 1)) |
5253 | return (ENXIO); |
5254 | error = ifp->if_set_bpf_tap(ifp, mode, callback); |
5255 | ifnet_decr_iorefcnt(ifp); |
5256 | } |
5257 | return (error); |
5258 | } |
5259 | |
5260 | errno_t |
5261 | dlil_resolve_multi(struct ifnet *ifp, const struct sockaddr *proto_addr, |
5262 | struct sockaddr *ll_addr, size_t ll_len) |
5263 | { |
5264 | errno_t result = EOPNOTSUPP; |
5265 | struct if_proto *proto; |
5266 | const struct sockaddr *verify; |
5267 | proto_media_resolve_multi resolvep; |
5268 | |
5269 | if (!ifnet_is_attached(ifp, 1)) |
5270 | return (result); |
5271 | |
5272 | bzero(ll_addr, ll_len); |
5273 | |
5274 | /* Call the protocol first; callee holds a proto refcnt upon success */ |
5275 | ifnet_lock_shared(ifp); |
5276 | proto = find_attached_proto(ifp, proto_addr->sa_family); |
5277 | ifnet_lock_done(ifp); |
5278 | if (proto != NULL) { |
5279 | resolvep = (proto->proto_kpi == kProtoKPI_v1 ? |
5280 | proto->kpi.v1.resolve_multi : proto->kpi.v2.resolve_multi); |
5281 | if (resolvep != NULL) |
5282 | result = resolvep(ifp, proto_addr, |
5283 | (struct sockaddr_dl *)(void *)ll_addr, ll_len); |
5284 | if_proto_free(proto); |
5285 | } |
5286 | |
5287 | /* Let the interface verify the multicast address */ |
5288 | if ((result == EOPNOTSUPP || result == 0) && ifp->if_check_multi) { |
5289 | if (result == 0) |
5290 | verify = ll_addr; |
5291 | else |
5292 | verify = proto_addr; |
5293 | result = ifp->if_check_multi(ifp, verify); |
5294 | } |
5295 | |
5296 | ifnet_decr_iorefcnt(ifp); |
5297 | return (result); |
5298 | } |
5299 | |
5300 | __private_extern__ errno_t |
5301 | dlil_send_arp_internal(ifnet_t ifp, u_short arpop, |
5302 | const struct sockaddr_dl *sender_hw, const struct sockaddr *sender_proto, |
5303 | const struct sockaddr_dl *target_hw, const struct sockaddr *target_proto) |
5304 | { |
5305 | struct if_proto *proto; |
5306 | errno_t result = 0; |
5307 | |
5308 | /* callee holds a proto refcnt upon success */ |
5309 | ifnet_lock_shared(ifp); |
5310 | proto = find_attached_proto(ifp, target_proto->sa_family); |
5311 | ifnet_lock_done(ifp); |
5312 | if (proto == NULL) { |
5313 | result = ENOTSUP; |
5314 | } else { |
5315 | proto_media_send_arp arpp; |
5316 | arpp = (proto->proto_kpi == kProtoKPI_v1 ? |
5317 | proto->kpi.v1.send_arp : proto->kpi.v2.send_arp); |
5318 | if (arpp == NULL) { |
5319 | result = ENOTSUP; |
5320 | } else { |
5321 | switch (arpop) { |
5322 | case ARPOP_REQUEST: |
5323 | arpstat.txrequests++; |
5324 | if (target_hw != NULL) |
5325 | arpstat.txurequests++; |
5326 | break; |
5327 | case ARPOP_REPLY: |
5328 | arpstat.txreplies++; |
5329 | break; |
5330 | } |
5331 | result = arpp(ifp, arpop, sender_hw, sender_proto, |
5332 | target_hw, target_proto); |
5333 | } |
5334 | if_proto_free(proto); |
5335 | } |
5336 | |
5337 | return (result); |
5338 | } |
5339 | |
5340 | struct net_thread_marks { }; |
5341 | static const struct net_thread_marks net_thread_marks_base = { }; |
5342 | |
5343 | __private_extern__ const net_thread_marks_t net_thread_marks_none = |
5344 | &net_thread_marks_base; |
5345 | |
5346 | __private_extern__ net_thread_marks_t |
5347 | net_thread_marks_push(u_int32_t push) |
5348 | { |
5349 | static const char *const base = (const void*)&net_thread_marks_base; |
5350 | u_int32_t pop = 0; |
5351 | |
5352 | if (push != 0) { |
5353 | struct uthread *uth = get_bsdthread_info(current_thread()); |
5354 | |
5355 | pop = push & ~uth->uu_network_marks; |
5356 | if (pop != 0) |
5357 | uth->uu_network_marks |= pop; |
5358 | } |
5359 | |
5360 | return ((net_thread_marks_t)&base[pop]); |
5361 | } |
5362 | |
5363 | __private_extern__ net_thread_marks_t |
5364 | net_thread_unmarks_push(u_int32_t unpush) |
5365 | { |
5366 | static const char *const base = (const void*)&net_thread_marks_base; |
5367 | u_int32_t unpop = 0; |
5368 | |
5369 | if (unpush != 0) { |
5370 | struct uthread *uth = get_bsdthread_info(current_thread()); |
5371 | |
5372 | unpop = unpush & uth->uu_network_marks; |
5373 | if (unpop != 0) |
5374 | uth->uu_network_marks &= ~unpop; |
5375 | } |
5376 | |
5377 | return ((net_thread_marks_t)&base[unpop]); |
5378 | } |
5379 | |
5380 | __private_extern__ void |
5381 | net_thread_marks_pop(net_thread_marks_t popx) |
5382 | { |
5383 | static const char *const base = (const void*)&net_thread_marks_base; |
5384 | const ptrdiff_t pop = (const char *)popx - (const char *)base; |
5385 | |
5386 | if (pop != 0) { |
5387 | static const ptrdiff_t ones = (ptrdiff_t)(u_int32_t)~0U; |
5388 | struct uthread *uth = get_bsdthread_info(current_thread()); |
5389 | |
5390 | VERIFY((pop & ones) == pop); |
5391 | VERIFY((ptrdiff_t)(uth->uu_network_marks & pop) == pop); |
5392 | uth->uu_network_marks &= ~pop; |
5393 | } |
5394 | } |
5395 | |
5396 | __private_extern__ void |
5397 | net_thread_unmarks_pop(net_thread_marks_t unpopx) |
5398 | { |
5399 | static const char *const base = (const void*)&net_thread_marks_base; |
5400 | ptrdiff_t unpop = (const char *)unpopx - (const char *)base; |
5401 | |
5402 | if (unpop != 0) { |
5403 | static const ptrdiff_t ones = (ptrdiff_t)(u_int32_t)~0U; |
5404 | struct uthread *uth = get_bsdthread_info(current_thread()); |
5405 | |
5406 | VERIFY((unpop & ones) == unpop); |
5407 | VERIFY((ptrdiff_t)(uth->uu_network_marks & unpop) == 0); |
5408 | uth->uu_network_marks |= unpop; |
5409 | } |
5410 | } |
5411 | |
5412 | __private_extern__ u_int32_t |
5413 | net_thread_is_marked(u_int32_t check) |
5414 | { |
5415 | if (check != 0) { |
5416 | struct uthread *uth = get_bsdthread_info(current_thread()); |
5417 | return (uth->uu_network_marks & check); |
5418 | } |
5419 | else |
5420 | return (0); |
5421 | } |
5422 | |
5423 | __private_extern__ u_int32_t |
5424 | net_thread_is_unmarked(u_int32_t check) |
5425 | { |
5426 | if (check != 0) { |
5427 | struct uthread *uth = get_bsdthread_info(current_thread()); |
5428 | return (~uth->uu_network_marks & check); |
5429 | } |
5430 | else |
5431 | return (0); |
5432 | } |
5433 | |
5434 | static __inline__ int |
5435 | _is_announcement(const struct sockaddr_in * sender_sin, |
5436 | const struct sockaddr_in * target_sin) |
5437 | { |
5438 | if (sender_sin == NULL) { |
5439 | return (FALSE); |
5440 | } |
5441 | return (sender_sin->sin_addr.s_addr == target_sin->sin_addr.s_addr); |
5442 | } |
5443 | |
5444 | __private_extern__ errno_t |
5445 | dlil_send_arp(ifnet_t ifp, u_short arpop, const struct sockaddr_dl *sender_hw, |
5446 | const struct sockaddr *sender_proto, const struct sockaddr_dl *target_hw, |
5447 | const struct sockaddr *target_proto0, u_int32_t rtflags) |
5448 | { |
5449 | errno_t result = 0; |
5450 | const struct sockaddr_in * sender_sin; |
5451 | const struct sockaddr_in * target_sin; |
5452 | struct sockaddr_inarp target_proto_sinarp; |
5453 | struct sockaddr *target_proto = (void *)(uintptr_t)target_proto0; |
5454 | |
5455 | if (target_proto == NULL || (sender_proto != NULL && |
5456 | sender_proto->sa_family != target_proto->sa_family)) |
5457 | return (EINVAL); |
5458 | |
5459 | /* |
5460 | * If the target is a (default) router, provide that |
5461 | * information to the send_arp callback routine. |
5462 | */ |
5463 | if (rtflags & RTF_ROUTER) { |
5464 | bcopy(target_proto, &target_proto_sinarp, |
5465 | sizeof (struct sockaddr_in)); |
5466 | target_proto_sinarp.sin_other |= SIN_ROUTER; |
5467 | target_proto = (struct sockaddr *)&target_proto_sinarp; |
5468 | } |
5469 | |
5470 | /* |
5471 | * If this is an ARP request and the target IP is IPv4LL, |
5472 | * send the request on all interfaces. The exception is |
5473 | * an announcement, which must only appear on the specific |
5474 | * interface. |
5475 | */ |
5476 | sender_sin = (struct sockaddr_in *)(void *)(uintptr_t)sender_proto; |
5477 | target_sin = (struct sockaddr_in *)(void *)(uintptr_t)target_proto; |
5478 | if (target_proto->sa_family == AF_INET && |
5479 | IN_LINKLOCAL(ntohl(target_sin->sin_addr.s_addr)) && |
5480 | ipv4_ll_arp_aware != 0 && arpop == ARPOP_REQUEST && |
5481 | !_is_announcement(target_sin, sender_sin)) { |
5482 | ifnet_t *ifp_list; |
5483 | u_int32_t count; |
5484 | u_int32_t ifp_on; |
5485 | |
5486 | result = ENOTSUP; |
5487 | |
5488 | if (ifnet_list_get(IFNET_FAMILY_ANY, &ifp_list, &count) == 0) { |
5489 | for (ifp_on = 0; ifp_on < count; ifp_on++) { |
5490 | errno_t new_result; |
5491 | ifaddr_t source_hw = NULL; |
5492 | ifaddr_t source_ip = NULL; |
5493 | struct sockaddr_in source_ip_copy; |
5494 | struct ifnet *cur_ifp = ifp_list[ifp_on]; |
5495 | |
5496 | /* |
5497 | * Only arp on interfaces marked for IPv4LL |
5498 | * ARPing. This may mean that we don't ARP on |
5499 | * the interface the subnet route points to. |
5500 | */ |
5501 | if (!(cur_ifp->if_eflags & IFEF_ARPLL)) |
5502 | continue; |
5503 | |
5504 | /* Find the source IP address */ |
5505 | ifnet_lock_shared(cur_ifp); |
5506 | source_hw = cur_ifp->if_lladdr; |
5507 | TAILQ_FOREACH(source_ip, &cur_ifp->if_addrhead, |
5508 | ifa_link) { |
5509 | IFA_LOCK(source_ip); |
5510 | if (source_ip->ifa_addr != NULL && |
5511 | source_ip->ifa_addr->sa_family == |
5512 | AF_INET) { |
5513 | /* Copy the source IP address */ |
5514 | source_ip_copy = |
5515 | *(struct sockaddr_in *) |
5516 | (void *)source_ip->ifa_addr; |
5517 | IFA_UNLOCK(source_ip); |
5518 | break; |
5519 | } |
5520 | IFA_UNLOCK(source_ip); |
5521 | } |
5522 | |
5523 | /* No IP Source, don't arp */ |
5524 | if (source_ip == NULL) { |
5525 | ifnet_lock_done(cur_ifp); |
5526 | continue; |
5527 | } |
5528 | |
5529 | IFA_ADDREF(source_hw); |
5530 | ifnet_lock_done(cur_ifp); |
5531 | |
5532 | /* Send the ARP */ |
5533 | new_result = dlil_send_arp_internal(cur_ifp, |
5534 | arpop, (struct sockaddr_dl *)(void *) |
5535 | source_hw->ifa_addr, |
5536 | (struct sockaddr *)&source_ip_copy, NULL, |
5537 | target_proto); |
5538 | |
5539 | IFA_REMREF(source_hw); |
5540 | if (result == ENOTSUP) { |
5541 | result = new_result; |
5542 | } |
5543 | } |
5544 | ifnet_list_free(ifp_list); |
5545 | } |
5546 | } else { |
5547 | result = dlil_send_arp_internal(ifp, arpop, sender_hw, |
5548 | sender_proto, target_hw, target_proto); |
5549 | } |
5550 | |
5551 | return (result); |
5552 | } |
5553 | |
5554 | /* |
5555 | * Caller must hold ifnet head lock. |
5556 | */ |
5557 | static int |
5558 | ifnet_lookup(struct ifnet *ifp) |
5559 | { |
5560 | struct ifnet *_ifp; |
5561 | |
5562 | LCK_RW_ASSERT(&ifnet_head_lock, LCK_RW_ASSERT_HELD); |
5563 | TAILQ_FOREACH(_ifp, &ifnet_head, if_link) { |
5564 | if (_ifp == ifp) |
5565 | break; |
5566 | } |
5567 | return (_ifp != NULL); |
5568 | } |
5569 | |
5570 | /* |
5571 | * Caller has to pass a non-zero refio argument to get a |
5572 | * IO reference count. This will prevent ifnet_detach from |
5573 | * being called when there are outstanding io reference counts. |
5574 | */ |
5575 | int |
5576 | ifnet_is_attached(struct ifnet *ifp, int refio) |
5577 | { |
5578 | int ret; |
5579 | |
5580 | lck_mtx_lock_spin(&ifp->if_ref_lock); |
5581 | if ((ret = IF_FULLY_ATTACHED(ifp))) { |
5582 | if (refio > 0) |
5583 | ifp->if_refio++; |
5584 | } |
5585 | lck_mtx_unlock(&ifp->if_ref_lock); |
5586 | |
5587 | return (ret); |
5588 | } |
5589 | |
5590 | /* |
5591 | * Caller must ensure the interface is attached; the assumption is that |
5592 | * there is at least an outstanding IO reference count held already. |
5593 | * Most callers would call ifnet_is_attached() instead. |
5594 | */ |
5595 | void |
5596 | ifnet_incr_iorefcnt(struct ifnet *ifp) |
5597 | { |
5598 | lck_mtx_lock_spin(&ifp->if_ref_lock); |
5599 | VERIFY(IF_FULLY_ATTACHED(ifp)); |
5600 | VERIFY(ifp->if_refio > 0); |
5601 | ifp->if_refio++; |
5602 | lck_mtx_unlock(&ifp->if_ref_lock); |
5603 | } |
5604 | |
5605 | void |
5606 | ifnet_decr_iorefcnt(struct ifnet *ifp) |
5607 | { |
5608 | lck_mtx_lock_spin(&ifp->if_ref_lock); |
5609 | VERIFY(ifp->if_refio > 0); |
5610 | VERIFY(ifp->if_refflags & (IFRF_ATTACHED | IFRF_DETACHING)); |
5611 | ifp->if_refio--; |
5612 | |
5613 | /* |
5614 | * if there are no more outstanding io references, wakeup the |
5615 | * ifnet_detach thread if detaching flag is set. |
5616 | */ |
5617 | if (ifp->if_refio == 0 && (ifp->if_refflags & IFRF_DETACHING)) |
5618 | wakeup(&(ifp->if_refio)); |
5619 | |
5620 | lck_mtx_unlock(&ifp->if_ref_lock); |
5621 | } |
5622 | |
5623 | static void |
5624 | dlil_if_trace(struct dlil_ifnet *dl_if, int refhold) |
5625 | { |
5626 | struct dlil_ifnet_dbg *dl_if_dbg = (struct dlil_ifnet_dbg *)dl_if; |
5627 | ctrace_t *tr; |
5628 | u_int32_t idx; |
5629 | u_int16_t *cnt; |
5630 | |
5631 | if (!(dl_if->dl_if_flags & DLIF_DEBUG)) { |
5632 | panic("%s: dl_if %p has no debug structure" , __func__, dl_if); |
5633 | /* NOTREACHED */ |
5634 | } |
5635 | |
5636 | if (refhold) { |
5637 | cnt = &dl_if_dbg->dldbg_if_refhold_cnt; |
5638 | tr = dl_if_dbg->dldbg_if_refhold; |
5639 | } else { |
5640 | cnt = &dl_if_dbg->dldbg_if_refrele_cnt; |
5641 | tr = dl_if_dbg->dldbg_if_refrele; |
5642 | } |
5643 | |
5644 | idx = atomic_add_16_ov(cnt, 1) % IF_REF_TRACE_HIST_SIZE; |
5645 | ctrace_record(&tr[idx]); |
5646 | } |
5647 | |
5648 | errno_t |
5649 | dlil_if_ref(struct ifnet *ifp) |
5650 | { |
5651 | struct dlil_ifnet *dl_if = (struct dlil_ifnet *)ifp; |
5652 | |
5653 | if (dl_if == NULL) |
5654 | return (EINVAL); |
5655 | |
5656 | lck_mtx_lock_spin(&dl_if->dl_if_lock); |
5657 | ++dl_if->dl_if_refcnt; |
5658 | if (dl_if->dl_if_refcnt == 0) { |
5659 | panic("%s: wraparound refcnt for ifp=%p" , __func__, ifp); |
5660 | /* NOTREACHED */ |
5661 | } |
5662 | if (dl_if->dl_if_trace != NULL) |
5663 | (*dl_if->dl_if_trace)(dl_if, TRUE); |
5664 | lck_mtx_unlock(&dl_if->dl_if_lock); |
5665 | |
5666 | return (0); |
5667 | } |
5668 | |
5669 | errno_t |
5670 | dlil_if_free(struct ifnet *ifp) |
5671 | { |
5672 | struct dlil_ifnet *dl_if = (struct dlil_ifnet *)ifp; |
5673 | bool need_release = FALSE; |
5674 | |
5675 | if (dl_if == NULL) |
5676 | return (EINVAL); |
5677 | |
5678 | lck_mtx_lock_spin(&dl_if->dl_if_lock); |
5679 | switch (dl_if->dl_if_refcnt) { |
5680 | case 0: |
5681 | panic("%s: negative refcnt for ifp=%p" , __func__, ifp); |
5682 | /* NOTREACHED */ |
5683 | break; |
5684 | case 1: |
5685 | if ((ifp->if_refflags & IFRF_EMBRYONIC) != 0) { |
5686 | need_release = TRUE; |
5687 | } |
5688 | break; |
5689 | default: |
5690 | break; |
5691 | } |
5692 | --dl_if->dl_if_refcnt; |
5693 | if (dl_if->dl_if_trace != NULL) |
5694 | (*dl_if->dl_if_trace)(dl_if, FALSE); |
5695 | lck_mtx_unlock(&dl_if->dl_if_lock); |
5696 | if (need_release) { |
5697 | dlil_if_release(ifp); |
5698 | } |
5699 | return (0); |
5700 | } |
5701 | |
5702 | static errno_t |
5703 | dlil_attach_protocol_internal(struct if_proto *proto, |
5704 | const struct ifnet_demux_desc *demux_list, u_int32_t demux_count, |
5705 | uint32_t * proto_count) |
5706 | { |
5707 | struct kev_dl_proto_data ev_pr_data; |
5708 | struct ifnet *ifp = proto->ifp; |
5709 | int retval = 0; |
5710 | u_int32_t hash_value = proto_hash_value(proto->protocol_family); |
5711 | struct if_proto *prev_proto; |
5712 | struct if_proto *_proto; |
5713 | |
5714 | /* callee holds a proto refcnt upon success */ |
5715 | ifnet_lock_exclusive(ifp); |
5716 | _proto = find_attached_proto(ifp, proto->protocol_family); |
5717 | if (_proto != NULL) { |
5718 | ifnet_lock_done(ifp); |
5719 | if_proto_free(_proto); |
5720 | return (EEXIST); |
5721 | } |
5722 | |
5723 | /* |
5724 | * Call family module add_proto routine so it can refine the |
5725 | * demux descriptors as it wishes. |
5726 | */ |
5727 | retval = ifp->if_add_proto(ifp, proto->protocol_family, demux_list, |
5728 | demux_count); |
5729 | if (retval) { |
5730 | ifnet_lock_done(ifp); |
5731 | return (retval); |
5732 | } |
5733 | |
5734 | /* |
5735 | * Insert the protocol in the hash |
5736 | */ |
5737 | prev_proto = SLIST_FIRST(&ifp->if_proto_hash[hash_value]); |
5738 | while (prev_proto != NULL && SLIST_NEXT(prev_proto, next_hash) != NULL) |
5739 | prev_proto = SLIST_NEXT(prev_proto, next_hash); |
5740 | if (prev_proto) |
5741 | SLIST_INSERT_AFTER(prev_proto, proto, next_hash); |
5742 | else |
5743 | SLIST_INSERT_HEAD(&ifp->if_proto_hash[hash_value], |
5744 | proto, next_hash); |
5745 | |
5746 | /* hold a proto refcnt for attach */ |
5747 | if_proto_ref(proto); |
5748 | |
5749 | /* |
5750 | * The reserved field carries the number of protocol still attached |
5751 | * (subject to change) |
5752 | */ |
5753 | ev_pr_data.proto_family = proto->protocol_family; |
5754 | ev_pr_data.proto_remaining_count = dlil_ifp_protolist(ifp, NULL, 0); |
5755 | |
5756 | ifnet_lock_done(ifp); |
5757 | |
5758 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_PROTO_ATTACHED, |
5759 | (struct net_event_data *)&ev_pr_data, |
5760 | sizeof (struct kev_dl_proto_data)); |
5761 | if (proto_count != NULL) { |
5762 | *proto_count = ev_pr_data.proto_remaining_count; |
5763 | } |
5764 | return (retval); |
5765 | } |
5766 | |
5767 | errno_t |
5768 | ifnet_attach_protocol(ifnet_t ifp, protocol_family_t protocol, |
5769 | const struct ifnet_attach_proto_param *proto_details) |
5770 | { |
5771 | int retval = 0; |
5772 | struct if_proto *ifproto = NULL; |
5773 | uint32_t proto_count = 0; |
5774 | |
5775 | ifnet_head_lock_shared(); |
5776 | if (ifp == NULL || protocol == 0 || proto_details == NULL) { |
5777 | retval = EINVAL; |
5778 | goto end; |
5779 | } |
5780 | /* Check that the interface is in the global list */ |
5781 | if (!ifnet_lookup(ifp)) { |
5782 | retval = ENXIO; |
5783 | goto end; |
5784 | } |
5785 | |
5786 | ifproto = zalloc(dlif_proto_zone); |
5787 | if (ifproto == NULL) { |
5788 | retval = ENOMEM; |
5789 | goto end; |
5790 | } |
5791 | bzero(ifproto, dlif_proto_size); |
5792 | |
5793 | /* refcnt held above during lookup */ |
5794 | ifproto->ifp = ifp; |
5795 | ifproto->protocol_family = protocol; |
5796 | ifproto->proto_kpi = kProtoKPI_v1; |
5797 | ifproto->kpi.v1.input = proto_details->input; |
5798 | ifproto->kpi.v1.pre_output = proto_details->pre_output; |
5799 | ifproto->kpi.v1.event = proto_details->event; |
5800 | ifproto->kpi.v1.ioctl = proto_details->ioctl; |
5801 | ifproto->kpi.v1.detached = proto_details->detached; |
5802 | ifproto->kpi.v1.resolve_multi = proto_details->resolve; |
5803 | ifproto->kpi.v1.send_arp = proto_details->send_arp; |
5804 | |
5805 | retval = dlil_attach_protocol_internal(ifproto, |
5806 | proto_details->demux_list, proto_details->demux_count, |
5807 | &proto_count); |
5808 | |
5809 | end: |
5810 | if (retval != 0 && retval != EEXIST && ifp != NULL) { |
5811 | DLIL_PRINTF("%s: failed to attach v1 protocol %d (err=%d)\n" , |
5812 | if_name(ifp), protocol, retval); |
5813 | } else { |
5814 | if (dlil_verbose) { |
5815 | printf("%s: attached v1 protocol %d (count = %d)\n" , |
5816 | if_name(ifp), |
5817 | protocol, proto_count); |
5818 | } |
5819 | } |
5820 | ifnet_head_done(); |
5821 | if (retval == 0) { |
5822 | /* |
5823 | * A protocol has been attached, mark the interface up. |
5824 | * This used to be done by configd.KernelEventMonitor, but that |
5825 | * is inherently prone to races (rdar://problem/30810208). |
5826 | */ |
5827 | (void) ifnet_set_flags(ifp, IFF_UP, IFF_UP); |
5828 | (void) ifnet_ioctl(ifp, 0, SIOCSIFFLAGS, NULL); |
5829 | dlil_post_sifflags_msg(ifp); |
5830 | } else if (ifproto != NULL) { |
5831 | zfree(dlif_proto_zone, ifproto); |
5832 | } |
5833 | return (retval); |
5834 | } |
5835 | |
5836 | errno_t |
5837 | ifnet_attach_protocol_v2(ifnet_t ifp, protocol_family_t protocol, |
5838 | const struct ifnet_attach_proto_param_v2 *proto_details) |
5839 | { |
5840 | int retval = 0; |
5841 | struct if_proto *ifproto = NULL; |
5842 | uint32_t proto_count = 0; |
5843 | |
5844 | ifnet_head_lock_shared(); |
5845 | if (ifp == NULL || protocol == 0 || proto_details == NULL) { |
5846 | retval = EINVAL; |
5847 | goto end; |
5848 | } |
5849 | /* Check that the interface is in the global list */ |
5850 | if (!ifnet_lookup(ifp)) { |
5851 | retval = ENXIO; |
5852 | goto end; |
5853 | } |
5854 | |
5855 | ifproto = zalloc(dlif_proto_zone); |
5856 | if (ifproto == NULL) { |
5857 | retval = ENOMEM; |
5858 | goto end; |
5859 | } |
5860 | bzero(ifproto, sizeof(*ifproto)); |
5861 | |
5862 | /* refcnt held above during lookup */ |
5863 | ifproto->ifp = ifp; |
5864 | ifproto->protocol_family = protocol; |
5865 | ifproto->proto_kpi = kProtoKPI_v2; |
5866 | ifproto->kpi.v2.input = proto_details->input; |
5867 | ifproto->kpi.v2.pre_output = proto_details->pre_output; |
5868 | ifproto->kpi.v2.event = proto_details->event; |
5869 | ifproto->kpi.v2.ioctl = proto_details->ioctl; |
5870 | ifproto->kpi.v2.detached = proto_details->detached; |
5871 | ifproto->kpi.v2.resolve_multi = proto_details->resolve; |
5872 | ifproto->kpi.v2.send_arp = proto_details->send_arp; |
5873 | |
5874 | retval = dlil_attach_protocol_internal(ifproto, |
5875 | proto_details->demux_list, proto_details->demux_count, |
5876 | &proto_count); |
5877 | |
5878 | end: |
5879 | if (retval != 0 && retval != EEXIST && ifp != NULL) { |
5880 | DLIL_PRINTF("%s: failed to attach v2 protocol %d (err=%d)\n" , |
5881 | if_name(ifp), protocol, retval); |
5882 | } else { |
5883 | if (dlil_verbose) { |
5884 | printf("%s: attached v2 protocol %d (count = %d)\n" , |
5885 | if_name(ifp), |
5886 | protocol, proto_count); |
5887 | } |
5888 | } |
5889 | ifnet_head_done(); |
5890 | if (retval == 0) { |
5891 | /* |
5892 | * A protocol has been attached, mark the interface up. |
5893 | * This used to be done by configd.KernelEventMonitor, but that |
5894 | * is inherently prone to races (rdar://problem/30810208). |
5895 | */ |
5896 | (void) ifnet_set_flags(ifp, IFF_UP, IFF_UP); |
5897 | (void) ifnet_ioctl(ifp, 0, SIOCSIFFLAGS, NULL); |
5898 | dlil_post_sifflags_msg(ifp); |
5899 | } else if (ifproto != NULL) { |
5900 | zfree(dlif_proto_zone, ifproto); |
5901 | } |
5902 | return (retval); |
5903 | } |
5904 | |
5905 | errno_t |
5906 | ifnet_detach_protocol(ifnet_t ifp, protocol_family_t proto_family) |
5907 | { |
5908 | struct if_proto *proto = NULL; |
5909 | int retval = 0; |
5910 | |
5911 | if (ifp == NULL || proto_family == 0) { |
5912 | retval = EINVAL; |
5913 | goto end; |
5914 | } |
5915 | |
5916 | ifnet_lock_exclusive(ifp); |
5917 | /* callee holds a proto refcnt upon success */ |
5918 | proto = find_attached_proto(ifp, proto_family); |
5919 | if (proto == NULL) { |
5920 | retval = ENXIO; |
5921 | ifnet_lock_done(ifp); |
5922 | goto end; |
5923 | } |
5924 | |
5925 | /* call family module del_proto */ |
5926 | if (ifp->if_del_proto) |
5927 | ifp->if_del_proto(ifp, proto->protocol_family); |
5928 | |
5929 | SLIST_REMOVE(&ifp->if_proto_hash[proto_hash_value(proto_family)], |
5930 | proto, if_proto, next_hash); |
5931 | |
5932 | if (proto->proto_kpi == kProtoKPI_v1) { |
5933 | proto->kpi.v1.input = ifproto_media_input_v1; |
5934 | proto->kpi.v1.pre_output = ifproto_media_preout; |
5935 | proto->kpi.v1.event = ifproto_media_event; |
5936 | proto->kpi.v1.ioctl = ifproto_media_ioctl; |
5937 | proto->kpi.v1.resolve_multi = ifproto_media_resolve_multi; |
5938 | proto->kpi.v1.send_arp = ifproto_media_send_arp; |
5939 | } else { |
5940 | proto->kpi.v2.input = ifproto_media_input_v2; |
5941 | proto->kpi.v2.pre_output = ifproto_media_preout; |
5942 | proto->kpi.v2.event = ifproto_media_event; |
5943 | proto->kpi.v2.ioctl = ifproto_media_ioctl; |
5944 | proto->kpi.v2.resolve_multi = ifproto_media_resolve_multi; |
5945 | proto->kpi.v2.send_arp = ifproto_media_send_arp; |
5946 | } |
5947 | proto->detached = 1; |
5948 | ifnet_lock_done(ifp); |
5949 | |
5950 | if (dlil_verbose) { |
5951 | printf("%s: detached %s protocol %d\n" , if_name(ifp), |
5952 | (proto->proto_kpi == kProtoKPI_v1) ? |
5953 | "v1" : "v2" , proto_family); |
5954 | } |
5955 | |
5956 | /* release proto refcnt held during protocol attach */ |
5957 | if_proto_free(proto); |
5958 | |
5959 | /* |
5960 | * Release proto refcnt held during lookup; the rest of |
5961 | * protocol detach steps will happen when the last proto |
5962 | * reference is released. |
5963 | */ |
5964 | if_proto_free(proto); |
5965 | |
5966 | end: |
5967 | return (retval); |
5968 | } |
5969 | |
5970 | |
5971 | static errno_t |
5972 | ifproto_media_input_v1(struct ifnet *ifp, protocol_family_t protocol, |
5973 | struct mbuf *packet, char *) |
5974 | { |
5975 | #pragma unused(ifp, protocol, packet, header) |
5976 | return (ENXIO); |
5977 | } |
5978 | |
5979 | static errno_t |
5980 | ifproto_media_input_v2(struct ifnet *ifp, protocol_family_t protocol, |
5981 | struct mbuf *packet) |
5982 | { |
5983 | #pragma unused(ifp, protocol, packet) |
5984 | return (ENXIO); |
5985 | |
5986 | } |
5987 | |
5988 | static errno_t |
5989 | ifproto_media_preout(struct ifnet *ifp, protocol_family_t protocol, |
5990 | mbuf_t *packet, const struct sockaddr *dest, void *route, char *frame_type, |
5991 | char *link_layer_dest) |
5992 | { |
5993 | #pragma unused(ifp, protocol, packet, dest, route, frame_type, link_layer_dest) |
5994 | return (ENXIO); |
5995 | |
5996 | } |
5997 | |
5998 | static void |
5999 | ifproto_media_event(struct ifnet *ifp, protocol_family_t protocol, |
6000 | const struct kev_msg *event) |
6001 | { |
6002 | #pragma unused(ifp, protocol, event) |
6003 | } |
6004 | |
6005 | static errno_t |
6006 | ifproto_media_ioctl(struct ifnet *ifp, protocol_family_t protocol, |
6007 | unsigned long command, void *argument) |
6008 | { |
6009 | #pragma unused(ifp, protocol, command, argument) |
6010 | return (ENXIO); |
6011 | } |
6012 | |
6013 | static errno_t |
6014 | ifproto_media_resolve_multi(ifnet_t ifp, const struct sockaddr *proto_addr, |
6015 | struct sockaddr_dl *out_ll, size_t ll_len) |
6016 | { |
6017 | #pragma unused(ifp, proto_addr, out_ll, ll_len) |
6018 | return (ENXIO); |
6019 | } |
6020 | |
6021 | static errno_t |
6022 | ifproto_media_send_arp(struct ifnet *ifp, u_short arpop, |
6023 | const struct sockaddr_dl *sender_hw, const struct sockaddr *sender_proto, |
6024 | const struct sockaddr_dl *target_hw, const struct sockaddr *target_proto) |
6025 | { |
6026 | #pragma unused(ifp, arpop, sender_hw, sender_proto, target_hw, target_proto) |
6027 | return (ENXIO); |
6028 | } |
6029 | |
6030 | extern int if_next_index(void); |
6031 | extern int tcp_ecn_outbound; |
6032 | |
6033 | errno_t |
6034 | ifnet_attach(ifnet_t ifp, const struct sockaddr_dl *ll_addr) |
6035 | { |
6036 | struct ifnet *tmp_if; |
6037 | struct ifaddr *ifa; |
6038 | struct if_data_internal if_data_saved; |
6039 | struct dlil_ifnet *dl_if = (struct dlil_ifnet *)ifp; |
6040 | struct dlil_threading_info *dl_inp; |
6041 | u_int32_t sflags = 0; |
6042 | int err; |
6043 | |
6044 | if (ifp == NULL) |
6045 | return (EINVAL); |
6046 | |
6047 | /* |
6048 | * Serialize ifnet attach using dlil_ifnet_lock, in order to |
6049 | * prevent the interface from being configured while it is |
6050 | * embryonic, as ifnet_head_lock is dropped and reacquired |
6051 | * below prior to marking the ifnet with IFRF_ATTACHED. |
6052 | */ |
6053 | dlil_if_lock(); |
6054 | ifnet_head_lock_exclusive(); |
6055 | /* Verify we aren't already on the list */ |
6056 | TAILQ_FOREACH(tmp_if, &ifnet_head, if_link) { |
6057 | if (tmp_if == ifp) { |
6058 | ifnet_head_done(); |
6059 | dlil_if_unlock(); |
6060 | return (EEXIST); |
6061 | } |
6062 | } |
6063 | |
6064 | lck_mtx_lock_spin(&ifp->if_ref_lock); |
6065 | if (!(ifp->if_refflags & IFRF_EMBRYONIC)) { |
6066 | panic_plain("%s: flags mismatch (embryonic not set) ifp=%p" , |
6067 | __func__, ifp); |
6068 | /* NOTREACHED */ |
6069 | } |
6070 | lck_mtx_unlock(&ifp->if_ref_lock); |
6071 | |
6072 | ifnet_lock_exclusive(ifp); |
6073 | |
6074 | /* Sanity check */ |
6075 | VERIFY(ifp->if_detaching_link.tqe_next == NULL); |
6076 | VERIFY(ifp->if_detaching_link.tqe_prev == NULL); |
6077 | |
6078 | if (ll_addr != NULL) { |
6079 | if (ifp->if_addrlen == 0) { |
6080 | ifp->if_addrlen = ll_addr->sdl_alen; |
6081 | } else if (ll_addr->sdl_alen != ifp->if_addrlen) { |
6082 | ifnet_lock_done(ifp); |
6083 | ifnet_head_done(); |
6084 | dlil_if_unlock(); |
6085 | return (EINVAL); |
6086 | } |
6087 | } |
6088 | |
6089 | /* |
6090 | * Allow interfaces without protocol families to attach |
6091 | * only if they have the necessary fields filled out. |
6092 | */ |
6093 | if (ifp->if_add_proto == NULL || ifp->if_del_proto == NULL) { |
6094 | DLIL_PRINTF("%s: Attempt to attach interface without " |
6095 | "family module - %d\n" , __func__, ifp->if_family); |
6096 | ifnet_lock_done(ifp); |
6097 | ifnet_head_done(); |
6098 | dlil_if_unlock(); |
6099 | return (ENODEV); |
6100 | } |
6101 | |
6102 | /* Allocate protocol hash table */ |
6103 | VERIFY(ifp->if_proto_hash == NULL); |
6104 | ifp->if_proto_hash = zalloc(dlif_phash_zone); |
6105 | if (ifp->if_proto_hash == NULL) { |
6106 | ifnet_lock_done(ifp); |
6107 | ifnet_head_done(); |
6108 | dlil_if_unlock(); |
6109 | return (ENOBUFS); |
6110 | } |
6111 | bzero(ifp->if_proto_hash, dlif_phash_size); |
6112 | |
6113 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
6114 | VERIFY(TAILQ_EMPTY(&ifp->if_flt_head)); |
6115 | TAILQ_INIT(&ifp->if_flt_head); |
6116 | VERIFY(ifp->if_flt_busy == 0); |
6117 | VERIFY(ifp->if_flt_waiters == 0); |
6118 | lck_mtx_unlock(&ifp->if_flt_lock); |
6119 | |
6120 | if (!(dl_if->dl_if_flags & DLIF_REUSE)) { |
6121 | VERIFY(LIST_EMPTY(&ifp->if_multiaddrs)); |
6122 | LIST_INIT(&ifp->if_multiaddrs); |
6123 | } |
6124 | |
6125 | VERIFY(ifp->if_allhostsinm == NULL); |
6126 | VERIFY(TAILQ_EMPTY(&ifp->if_addrhead)); |
6127 | TAILQ_INIT(&ifp->if_addrhead); |
6128 | |
6129 | if (ifp->if_index == 0) { |
6130 | int idx = if_next_index(); |
6131 | |
6132 | if (idx == -1) { |
6133 | ifp->if_index = 0; |
6134 | ifnet_lock_done(ifp); |
6135 | ifnet_head_done(); |
6136 | dlil_if_unlock(); |
6137 | return (ENOBUFS); |
6138 | } |
6139 | ifp->if_index = idx; |
6140 | } |
6141 | /* There should not be anything occupying this slot */ |
6142 | VERIFY(ifindex2ifnet[ifp->if_index] == NULL); |
6143 | |
6144 | /* allocate (if needed) and initialize a link address */ |
6145 | ifa = dlil_alloc_lladdr(ifp, ll_addr); |
6146 | if (ifa == NULL) { |
6147 | ifnet_lock_done(ifp); |
6148 | ifnet_head_done(); |
6149 | dlil_if_unlock(); |
6150 | return (ENOBUFS); |
6151 | } |
6152 | |
6153 | VERIFY(ifnet_addrs[ifp->if_index - 1] == NULL); |
6154 | ifnet_addrs[ifp->if_index - 1] = ifa; |
6155 | |
6156 | /* make this address the first on the list */ |
6157 | IFA_LOCK(ifa); |
6158 | /* hold a reference for ifnet_addrs[] */ |
6159 | IFA_ADDREF_LOCKED(ifa); |
6160 | /* if_attach_link_ifa() holds a reference for ifa_link */ |
6161 | if_attach_link_ifa(ifp, ifa); |
6162 | IFA_UNLOCK(ifa); |
6163 | |
6164 | #if CONFIG_MACF_NET |
6165 | mac_ifnet_label_associate(ifp); |
6166 | #endif |
6167 | |
6168 | TAILQ_INSERT_TAIL(&ifnet_head, ifp, if_link); |
6169 | ifindex2ifnet[ifp->if_index] = ifp; |
6170 | |
6171 | /* Hold a reference to the underlying dlil_ifnet */ |
6172 | ifnet_reference(ifp); |
6173 | |
6174 | /* Clear stats (save and restore other fields that we care) */ |
6175 | if_data_saved = ifp->if_data; |
6176 | bzero(&ifp->if_data, sizeof (ifp->if_data)); |
6177 | ifp->if_data.ifi_type = if_data_saved.ifi_type; |
6178 | ifp->if_data.ifi_typelen = if_data_saved.ifi_typelen; |
6179 | ifp->if_data.ifi_physical = if_data_saved.ifi_physical; |
6180 | ifp->if_data.ifi_addrlen = if_data_saved.ifi_addrlen; |
6181 | ifp->if_data.ifi_hdrlen = if_data_saved.ifi_hdrlen; |
6182 | ifp->if_data.ifi_mtu = if_data_saved.ifi_mtu; |
6183 | ifp->if_data.ifi_baudrate = if_data_saved.ifi_baudrate; |
6184 | ifp->if_data.ifi_hwassist = if_data_saved.ifi_hwassist; |
6185 | ifp->if_data.ifi_tso_v4_mtu = if_data_saved.ifi_tso_v4_mtu; |
6186 | ifp->if_data.ifi_tso_v6_mtu = if_data_saved.ifi_tso_v6_mtu; |
6187 | ifnet_touch_lastchange(ifp); |
6188 | |
6189 | VERIFY(ifp->if_output_sched_model == IFNET_SCHED_MODEL_NORMAL || |
6190 | ifp->if_output_sched_model == IFNET_SCHED_MODEL_DRIVER_MANAGED || |
6191 | ifp->if_output_sched_model == IFNET_SCHED_MODEL_FQ_CODEL); |
6192 | |
6193 | /* By default, use SFB and enable flow advisory */ |
6194 | sflags = PKTSCHEDF_QALG_SFB; |
6195 | if (if_flowadv) |
6196 | sflags |= PKTSCHEDF_QALG_FLOWCTL; |
6197 | |
6198 | if (if_delaybased_queue) |
6199 | sflags |= PKTSCHEDF_QALG_DELAYBASED; |
6200 | |
6201 | if (ifp->if_output_sched_model == |
6202 | IFNET_SCHED_MODEL_DRIVER_MANAGED) |
6203 | sflags |= PKTSCHEDF_QALG_DRIVER_MANAGED; |
6204 | |
6205 | /* Initialize transmit queue(s) */ |
6206 | err = ifclassq_setup(ifp, sflags, (dl_if->dl_if_flags & DLIF_REUSE)); |
6207 | if (err != 0) { |
6208 | panic_plain("%s: ifp=%p couldn't initialize transmit queue; " |
6209 | "err=%d" , __func__, ifp, err); |
6210 | /* NOTREACHED */ |
6211 | } |
6212 | |
6213 | /* Sanity checks on the input thread storage */ |
6214 | dl_inp = &dl_if->dl_if_inpstorage; |
6215 | bzero(&dl_inp->stats, sizeof (dl_inp->stats)); |
6216 | VERIFY(dl_inp->input_waiting == 0); |
6217 | VERIFY(dl_inp->wtot == 0); |
6218 | VERIFY(dl_inp->ifp == NULL); |
6219 | VERIFY(qhead(&dl_inp->rcvq_pkts) == NULL && qempty(&dl_inp->rcvq_pkts)); |
6220 | VERIFY(qlimit(&dl_inp->rcvq_pkts) == 0); |
6221 | VERIFY(!dl_inp->net_affinity); |
6222 | VERIFY(ifp->if_inp == NULL); |
6223 | VERIFY(dl_inp->input_thr == THREAD_NULL); |
6224 | VERIFY(dl_inp->wloop_thr == THREAD_NULL); |
6225 | VERIFY(dl_inp->poll_thr == THREAD_NULL); |
6226 | VERIFY(dl_inp->tag == 0); |
6227 | VERIFY(dl_inp->mode == IFNET_MODEL_INPUT_POLL_OFF); |
6228 | bzero(&dl_inp->tstats, sizeof (dl_inp->tstats)); |
6229 | bzero(&dl_inp->pstats, sizeof (dl_inp->pstats)); |
6230 | bzero(&dl_inp->sstats, sizeof (dl_inp->sstats)); |
6231 | #if IFNET_INPUT_SANITY_CHK |
6232 | VERIFY(dl_inp->input_mbuf_cnt == 0); |
6233 | #endif /* IFNET_INPUT_SANITY_CHK */ |
6234 | |
6235 | /* |
6236 | * A specific DLIL input thread is created per Ethernet/cellular |
6237 | * interface or for an interface which supports opportunistic |
6238 | * input polling. Pseudo interfaces or other types of interfaces |
6239 | * use the main input thread instead. |
6240 | */ |
6241 | if ((net_rxpoll && (ifp->if_eflags & IFEF_RXPOLL)) || |
6242 | ifp->if_type == IFT_ETHER || ifp->if_type == IFT_CELLULAR) { |
6243 | ifp->if_inp = dl_inp; |
6244 | err = dlil_create_input_thread(ifp, ifp->if_inp); |
6245 | if (err != 0) { |
6246 | panic_plain("%s: ifp=%p couldn't get an input thread; " |
6247 | "err=%d" , __func__, ifp, err); |
6248 | /* NOTREACHED */ |
6249 | } |
6250 | } |
6251 | |
6252 | if (ifp->if_inp != NULL && ifp->if_inp->input_mit_tcall == NULL) { |
6253 | ifp->if_inp->input_mit_tcall = |
6254 | thread_call_allocate_with_priority(dlil_mit_tcall_fn, |
6255 | ifp, THREAD_CALL_PRIORITY_KERNEL); |
6256 | } |
6257 | |
6258 | /* |
6259 | * If the driver supports the new transmit model, calculate flow hash |
6260 | * and create a workloop starter thread to invoke the if_start callback |
6261 | * where the packets may be dequeued and transmitted. |
6262 | */ |
6263 | if (ifp->if_eflags & IFEF_TXSTART) { |
6264 | ifp->if_flowhash = ifnet_calc_flowhash(ifp); |
6265 | VERIFY(ifp->if_flowhash != 0); |
6266 | VERIFY(ifp->if_start_thread == THREAD_NULL); |
6267 | |
6268 | ifnet_set_start_cycle(ifp, NULL); |
6269 | ifp->if_start_active = 0; |
6270 | ifp->if_start_req = 0; |
6271 | ifp->if_start_flags = 0; |
6272 | VERIFY(ifp->if_start != NULL); |
6273 | if ((err = kernel_thread_start(ifnet_start_thread_fn, |
6274 | ifp, &ifp->if_start_thread)) != KERN_SUCCESS) { |
6275 | panic_plain("%s: " |
6276 | "ifp=%p couldn't get a start thread; " |
6277 | "err=%d" , __func__, ifp, err); |
6278 | /* NOTREACHED */ |
6279 | } |
6280 | ml_thread_policy(ifp->if_start_thread, MACHINE_GROUP, |
6281 | (MACHINE_NETWORK_GROUP|MACHINE_NETWORK_WORKLOOP)); |
6282 | } else { |
6283 | ifp->if_flowhash = 0; |
6284 | } |
6285 | |
6286 | /* |
6287 | * If the driver supports the new receive model, create a poller |
6288 | * thread to invoke if_input_poll callback where the packets may |
6289 | * be dequeued from the driver and processed for reception. |
6290 | */ |
6291 | if (ifp->if_eflags & IFEF_RXPOLL) { |
6292 | VERIFY(ifp->if_input_poll != NULL); |
6293 | VERIFY(ifp->if_input_ctl != NULL); |
6294 | VERIFY(ifp->if_poll_thread == THREAD_NULL); |
6295 | |
6296 | ifnet_set_poll_cycle(ifp, NULL); |
6297 | ifp->if_poll_update = 0; |
6298 | ifp->if_poll_active = 0; |
6299 | ifp->if_poll_req = 0; |
6300 | if ((err = kernel_thread_start(ifnet_poll_thread_fn, ifp, |
6301 | &ifp->if_poll_thread)) != KERN_SUCCESS) { |
6302 | panic_plain("%s: ifp=%p couldn't get a poll thread; " |
6303 | "err=%d" , __func__, ifp, err); |
6304 | /* NOTREACHED */ |
6305 | } |
6306 | ml_thread_policy(ifp->if_poll_thread, MACHINE_GROUP, |
6307 | (MACHINE_NETWORK_GROUP|MACHINE_NETWORK_WORKLOOP)); |
6308 | } |
6309 | |
6310 | VERIFY(ifp->if_desc.ifd_maxlen == IF_DESCSIZE); |
6311 | VERIFY(ifp->if_desc.ifd_len == 0); |
6312 | VERIFY(ifp->if_desc.ifd_desc != NULL); |
6313 | |
6314 | /* Record attach PC stacktrace */ |
6315 | ctrace_record(&((struct dlil_ifnet *)ifp)->dl_if_attach); |
6316 | |
6317 | ifp->if_updatemcasts = 0; |
6318 | if (!LIST_EMPTY(&ifp->if_multiaddrs)) { |
6319 | struct ifmultiaddr *ifma; |
6320 | LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { |
6321 | IFMA_LOCK(ifma); |
6322 | if (ifma->ifma_addr->sa_family == AF_LINK || |
6323 | ifma->ifma_addr->sa_family == AF_UNSPEC) |
6324 | ifp->if_updatemcasts++; |
6325 | IFMA_UNLOCK(ifma); |
6326 | } |
6327 | |
6328 | printf("%s: attached with %d suspended link-layer multicast " |
6329 | "membership(s)\n" , if_name(ifp), |
6330 | ifp->if_updatemcasts); |
6331 | } |
6332 | |
6333 | /* Clear logging parameters */ |
6334 | bzero(&ifp->if_log, sizeof (ifp->if_log)); |
6335 | |
6336 | /* Clear foreground/realtime activity timestamps */ |
6337 | ifp->if_fg_sendts = 0; |
6338 | ifp->if_rt_sendts = 0; |
6339 | |
6340 | VERIFY(ifp->if_delegated.ifp == NULL); |
6341 | VERIFY(ifp->if_delegated.type == 0); |
6342 | VERIFY(ifp->if_delegated.family == 0); |
6343 | VERIFY(ifp->if_delegated.subfamily == 0); |
6344 | VERIFY(ifp->if_delegated.expensive == 0); |
6345 | |
6346 | VERIFY(ifp->if_agentids == NULL); |
6347 | VERIFY(ifp->if_agentcount == 0); |
6348 | |
6349 | /* Reset interface state */ |
6350 | bzero(&ifp->if_interface_state, sizeof(ifp->if_interface_state)); |
6351 | ifp->if_interface_state.valid_bitmask |= |
6352 | IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID; |
6353 | ifp->if_interface_state.interface_availability = |
6354 | IF_INTERFACE_STATE_INTERFACE_AVAILABLE; |
6355 | |
6356 | /* Initialize Link Quality Metric (loopback [lo0] is always good) */ |
6357 | if (ifp == lo_ifp) { |
6358 | ifp->if_interface_state.lqm_state = IFNET_LQM_THRESH_GOOD; |
6359 | ifp->if_interface_state.valid_bitmask |= |
6360 | IF_INTERFACE_STATE_LQM_STATE_VALID; |
6361 | } else { |
6362 | ifp->if_interface_state.lqm_state = IFNET_LQM_THRESH_UNKNOWN; |
6363 | } |
6364 | |
6365 | /* |
6366 | * Enable ECN capability on this interface depending on the |
6367 | * value of ECN global setting |
6368 | */ |
6369 | if (tcp_ecn_outbound == 2 && !IFNET_IS_CELLULAR(ifp)) { |
6370 | ifp->if_eflags |= IFEF_ECN_ENABLE; |
6371 | ifp->if_eflags &= ~IFEF_ECN_DISABLE; |
6372 | } |
6373 | |
6374 | /* |
6375 | * Built-in Cyclops always on policy for WiFi infra |
6376 | */ |
6377 | if (IFNET_IS_WIFI_INFRA(ifp) && net_qos_policy_wifi_enabled != 0) { |
6378 | errno_t error; |
6379 | |
6380 | error = if_set_qosmarking_mode(ifp, |
6381 | IFRTYPE_QOSMARKING_FASTLANE); |
6382 | if (error != 0) { |
6383 | printf("%s if_set_qosmarking_mode(%s) error %d\n" , |
6384 | __func__, ifp->if_xname, error); |
6385 | } else { |
6386 | ifp->if_eflags |= IFEF_QOSMARKING_ENABLED; |
6387 | #if (DEVELOPMENT || DEBUG) |
6388 | printf("%s fastlane enabled on %s\n" , |
6389 | __func__, ifp->if_xname); |
6390 | #endif /* (DEVELOPMENT || DEBUG) */ |
6391 | } |
6392 | } |
6393 | |
6394 | ifnet_lock_done(ifp); |
6395 | ifnet_head_done(); |
6396 | |
6397 | |
6398 | lck_mtx_lock(&ifp->if_cached_route_lock); |
6399 | /* Enable forwarding cached route */ |
6400 | ifp->if_fwd_cacheok = 1; |
6401 | /* Clean up any existing cached routes */ |
6402 | ROUTE_RELEASE(&ifp->if_fwd_route); |
6403 | bzero(&ifp->if_fwd_route, sizeof (ifp->if_fwd_route)); |
6404 | ROUTE_RELEASE(&ifp->if_src_route); |
6405 | bzero(&ifp->if_src_route, sizeof (ifp->if_src_route)); |
6406 | ROUTE_RELEASE(&ifp->if_src_route6); |
6407 | bzero(&ifp->if_src_route6, sizeof (ifp->if_src_route6)); |
6408 | lck_mtx_unlock(&ifp->if_cached_route_lock); |
6409 | |
6410 | ifnet_llreach_ifattach(ifp, (dl_if->dl_if_flags & DLIF_REUSE)); |
6411 | |
6412 | /* |
6413 | * Allocate and attach IGMPv3/MLDv2 interface specific variables |
6414 | * and trees; do this before the ifnet is marked as attached. |
6415 | * The ifnet keeps the reference to the info structures even after |
6416 | * the ifnet is detached, since the network-layer records still |
6417 | * refer to the info structures even after that. This also |
6418 | * makes it possible for them to still function after the ifnet |
6419 | * is recycled or reattached. |
6420 | */ |
6421 | #if INET |
6422 | if (IGMP_IFINFO(ifp) == NULL) { |
6423 | IGMP_IFINFO(ifp) = igmp_domifattach(ifp, M_WAITOK); |
6424 | VERIFY(IGMP_IFINFO(ifp) != NULL); |
6425 | } else { |
6426 | VERIFY(IGMP_IFINFO(ifp)->igi_ifp == ifp); |
6427 | igmp_domifreattach(IGMP_IFINFO(ifp)); |
6428 | } |
6429 | #endif /* INET */ |
6430 | #if INET6 |
6431 | if (MLD_IFINFO(ifp) == NULL) { |
6432 | MLD_IFINFO(ifp) = mld_domifattach(ifp, M_WAITOK); |
6433 | VERIFY(MLD_IFINFO(ifp) != NULL); |
6434 | } else { |
6435 | VERIFY(MLD_IFINFO(ifp)->mli_ifp == ifp); |
6436 | mld_domifreattach(MLD_IFINFO(ifp)); |
6437 | } |
6438 | #endif /* INET6 */ |
6439 | |
6440 | VERIFY(ifp->if_data_threshold == 0); |
6441 | VERIFY(ifp->if_dt_tcall != NULL); |
6442 | |
6443 | /* |
6444 | * Finally, mark this ifnet as attached. |
6445 | */ |
6446 | lck_mtx_lock(rnh_lock); |
6447 | ifnet_lock_exclusive(ifp); |
6448 | lck_mtx_lock_spin(&ifp->if_ref_lock); |
6449 | ifp->if_refflags = IFRF_ATTACHED; /* clears embryonic */ |
6450 | lck_mtx_unlock(&ifp->if_ref_lock); |
6451 | if (net_rtref) { |
6452 | /* boot-args override; enable idle notification */ |
6453 | (void) ifnet_set_idle_flags_locked(ifp, IFRF_IDLE_NOTIFY, |
6454 | IFRF_IDLE_NOTIFY); |
6455 | } else { |
6456 | /* apply previous request(s) to set the idle flags, if any */ |
6457 | (void) ifnet_set_idle_flags_locked(ifp, ifp->if_idle_new_flags, |
6458 | ifp->if_idle_new_flags_mask); |
6459 | |
6460 | } |
6461 | ifnet_lock_done(ifp); |
6462 | lck_mtx_unlock(rnh_lock); |
6463 | dlil_if_unlock(); |
6464 | |
6465 | #if PF |
6466 | /* |
6467 | * Attach packet filter to this interface, if enabled. |
6468 | */ |
6469 | pf_ifnet_hook(ifp, 1); |
6470 | #endif /* PF */ |
6471 | |
6472 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_ATTACHED, NULL, 0); |
6473 | |
6474 | if (dlil_verbose) { |
6475 | printf("%s: attached%s\n" , if_name(ifp), |
6476 | (dl_if->dl_if_flags & DLIF_REUSE) ? " (recycled)" : "" ); |
6477 | } |
6478 | |
6479 | return (0); |
6480 | } |
6481 | |
6482 | /* |
6483 | * Prepare the storage for the first/permanent link address, which must |
6484 | * must have the same lifetime as the ifnet itself. Although the link |
6485 | * address gets removed from if_addrhead and ifnet_addrs[] at detach time, |
6486 | * its location in memory must never change as it may still be referred |
6487 | * to by some parts of the system afterwards (unfortunate implementation |
6488 | * artifacts inherited from BSD.) |
6489 | * |
6490 | * Caller must hold ifnet lock as writer. |
6491 | */ |
6492 | static struct ifaddr * |
6493 | dlil_alloc_lladdr(struct ifnet *ifp, const struct sockaddr_dl *ll_addr) |
6494 | { |
6495 | struct ifaddr *ifa, *oifa; |
6496 | struct sockaddr_dl *asdl, *msdl; |
6497 | char workbuf[IFNAMSIZ*2]; |
6498 | int namelen, masklen, socksize; |
6499 | struct dlil_ifnet *dl_if = (struct dlil_ifnet *)ifp; |
6500 | |
6501 | ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_EXCLUSIVE); |
6502 | VERIFY(ll_addr == NULL || ll_addr->sdl_alen == ifp->if_addrlen); |
6503 | |
6504 | namelen = snprintf(workbuf, sizeof (workbuf), "%s" , |
6505 | if_name(ifp)); |
6506 | masklen = offsetof(struct sockaddr_dl, sdl_data[0]) |
6507 | + ((namelen > 0) ? namelen : 0); |
6508 | socksize = masklen + ifp->if_addrlen; |
6509 | #define ROUNDUP(a) (1 + (((a) - 1) | (sizeof (u_int32_t) - 1))) |
6510 | if ((u_int32_t)socksize < sizeof (struct sockaddr_dl)) |
6511 | socksize = sizeof(struct sockaddr_dl); |
6512 | socksize = ROUNDUP(socksize); |
6513 | #undef ROUNDUP |
6514 | |
6515 | ifa = ifp->if_lladdr; |
6516 | if (socksize > DLIL_SDLMAXLEN || |
6517 | (ifa != NULL && ifa != &dl_if->dl_if_lladdr.ifa)) { |
6518 | /* |
6519 | * Rare, but in the event that the link address requires |
6520 | * more storage space than DLIL_SDLMAXLEN, allocate the |
6521 | * largest possible storages for address and mask, such |
6522 | * that we can reuse the same space when if_addrlen grows. |
6523 | * This same space will be used when if_addrlen shrinks. |
6524 | */ |
6525 | if (ifa == NULL || ifa == &dl_if->dl_if_lladdr.ifa) { |
6526 | int ifasize = sizeof (*ifa) + 2 * SOCK_MAXADDRLEN; |
6527 | ifa = _MALLOC(ifasize, M_IFADDR, M_WAITOK | M_ZERO); |
6528 | if (ifa == NULL) |
6529 | return (NULL); |
6530 | ifa_lock_init(ifa); |
6531 | /* Don't set IFD_ALLOC, as this is permanent */ |
6532 | ifa->ifa_debug = IFD_LINK; |
6533 | } |
6534 | IFA_LOCK(ifa); |
6535 | /* address and mask sockaddr_dl locations */ |
6536 | asdl = (struct sockaddr_dl *)(ifa + 1); |
6537 | bzero(asdl, SOCK_MAXADDRLEN); |
6538 | msdl = (struct sockaddr_dl *)(void *) |
6539 | ((char *)asdl + SOCK_MAXADDRLEN); |
6540 | bzero(msdl, SOCK_MAXADDRLEN); |
6541 | } else { |
6542 | VERIFY(ifa == NULL || ifa == &dl_if->dl_if_lladdr.ifa); |
6543 | /* |
6544 | * Use the storage areas for address and mask within the |
6545 | * dlil_ifnet structure. This is the most common case. |
6546 | */ |
6547 | if (ifa == NULL) { |
6548 | ifa = &dl_if->dl_if_lladdr.ifa; |
6549 | ifa_lock_init(ifa); |
6550 | /* Don't set IFD_ALLOC, as this is permanent */ |
6551 | ifa->ifa_debug = IFD_LINK; |
6552 | } |
6553 | IFA_LOCK(ifa); |
6554 | /* address and mask sockaddr_dl locations */ |
6555 | asdl = (struct sockaddr_dl *)(void *)&dl_if->dl_if_lladdr.asdl; |
6556 | bzero(asdl, sizeof (dl_if->dl_if_lladdr.asdl)); |
6557 | msdl = (struct sockaddr_dl *)(void *)&dl_if->dl_if_lladdr.msdl; |
6558 | bzero(msdl, sizeof (dl_if->dl_if_lladdr.msdl)); |
6559 | } |
6560 | |
6561 | /* hold a permanent reference for the ifnet itself */ |
6562 | IFA_ADDREF_LOCKED(ifa); |
6563 | oifa = ifp->if_lladdr; |
6564 | ifp->if_lladdr = ifa; |
6565 | |
6566 | VERIFY(ifa->ifa_debug == IFD_LINK); |
6567 | ifa->ifa_ifp = ifp; |
6568 | ifa->ifa_rtrequest = link_rtrequest; |
6569 | ifa->ifa_addr = (struct sockaddr *)asdl; |
6570 | asdl->sdl_len = socksize; |
6571 | asdl->sdl_family = AF_LINK; |
6572 | if (namelen > 0) { |
6573 | bcopy(workbuf, asdl->sdl_data, min(namelen, |
6574 | sizeof (asdl->sdl_data))); |
6575 | asdl->sdl_nlen = namelen; |
6576 | } else { |
6577 | asdl->sdl_nlen = 0; |
6578 | } |
6579 | asdl->sdl_index = ifp->if_index; |
6580 | asdl->sdl_type = ifp->if_type; |
6581 | if (ll_addr != NULL) { |
6582 | asdl->sdl_alen = ll_addr->sdl_alen; |
6583 | bcopy(CONST_LLADDR(ll_addr), LLADDR(asdl), asdl->sdl_alen); |
6584 | } else { |
6585 | asdl->sdl_alen = 0; |
6586 | } |
6587 | ifa->ifa_netmask = (struct sockaddr *)msdl; |
6588 | msdl->sdl_len = masklen; |
6589 | while (namelen > 0) |
6590 | msdl->sdl_data[--namelen] = 0xff; |
6591 | IFA_UNLOCK(ifa); |
6592 | |
6593 | if (oifa != NULL) |
6594 | IFA_REMREF(oifa); |
6595 | |
6596 | return (ifa); |
6597 | } |
6598 | |
6599 | static void |
6600 | if_purgeaddrs(struct ifnet *ifp) |
6601 | { |
6602 | #if INET |
6603 | in_purgeaddrs(ifp); |
6604 | #endif /* INET */ |
6605 | #if INET6 |
6606 | in6_purgeaddrs(ifp); |
6607 | #endif /* INET6 */ |
6608 | } |
6609 | |
6610 | errno_t |
6611 | ifnet_detach(ifnet_t ifp) |
6612 | { |
6613 | struct ifnet *delegated_ifp; |
6614 | struct nd_ifinfo *ndi = NULL; |
6615 | |
6616 | if (ifp == NULL) |
6617 | return (EINVAL); |
6618 | |
6619 | ndi = ND_IFINFO(ifp); |
6620 | if (NULL != ndi) |
6621 | ndi->cga_initialized = FALSE; |
6622 | |
6623 | lck_mtx_lock(rnh_lock); |
6624 | ifnet_head_lock_exclusive(); |
6625 | ifnet_lock_exclusive(ifp); |
6626 | |
6627 | /* |
6628 | * Check to see if this interface has previously triggered |
6629 | * aggressive protocol draining; if so, decrement the global |
6630 | * refcnt and clear PR_AGGDRAIN on the route domain if |
6631 | * there are no more of such an interface around. |
6632 | */ |
6633 | (void) ifnet_set_idle_flags_locked(ifp, 0, ~0); |
6634 | |
6635 | lck_mtx_lock_spin(&ifp->if_ref_lock); |
6636 | if (!(ifp->if_refflags & IFRF_ATTACHED)) { |
6637 | lck_mtx_unlock(&ifp->if_ref_lock); |
6638 | ifnet_lock_done(ifp); |
6639 | ifnet_head_done(); |
6640 | lck_mtx_unlock(rnh_lock); |
6641 | return (EINVAL); |
6642 | } else if (ifp->if_refflags & IFRF_DETACHING) { |
6643 | /* Interface has already been detached */ |
6644 | lck_mtx_unlock(&ifp->if_ref_lock); |
6645 | ifnet_lock_done(ifp); |
6646 | ifnet_head_done(); |
6647 | lck_mtx_unlock(rnh_lock); |
6648 | return (ENXIO); |
6649 | } |
6650 | VERIFY(!(ifp->if_refflags & IFRF_EMBRYONIC)); |
6651 | /* Indicate this interface is being detached */ |
6652 | ifp->if_refflags &= ~IFRF_ATTACHED; |
6653 | ifp->if_refflags |= IFRF_DETACHING; |
6654 | lck_mtx_unlock(&ifp->if_ref_lock); |
6655 | |
6656 | if (dlil_verbose) { |
6657 | printf("%s: detaching\n" , if_name(ifp)); |
6658 | } |
6659 | |
6660 | /* clean up flow control entry object if there's any */ |
6661 | if (ifp->if_eflags & IFEF_TXSTART) { |
6662 | ifnet_flowadv(ifp->if_flowhash); |
6663 | } |
6664 | |
6665 | /* Reset ECN enable/disable flags */ |
6666 | ifp->if_eflags &= ~IFEF_ECN_DISABLE; |
6667 | ifp->if_eflags &= ~IFEF_ECN_ENABLE; |
6668 | |
6669 | /* Reset CLAT46 flag */ |
6670 | ifp->if_eflags &= ~IFEF_CLAT46; |
6671 | |
6672 | /* |
6673 | * Remove ifnet from the ifnet_head, ifindex2ifnet[]; it will |
6674 | * no longer be visible during lookups from this point. |
6675 | */ |
6676 | VERIFY(ifindex2ifnet[ifp->if_index] == ifp); |
6677 | TAILQ_REMOVE(&ifnet_head, ifp, if_link); |
6678 | ifp->if_link.tqe_next = NULL; |
6679 | ifp->if_link.tqe_prev = NULL; |
6680 | if (ifp->if_ordered_link.tqe_next != NULL || |
6681 | ifp->if_ordered_link.tqe_prev != NULL) { |
6682 | ifnet_remove_from_ordered_list(ifp); |
6683 | } |
6684 | ifindex2ifnet[ifp->if_index] = NULL; |
6685 | |
6686 | /* 18717626 - reset IFEF_IPV4_ROUTER and IFEF_IPV6_ROUTER */ |
6687 | ifp->if_eflags &= ~(IFEF_IPV4_ROUTER | IFEF_IPV6_ROUTER); |
6688 | |
6689 | /* Record detach PC stacktrace */ |
6690 | ctrace_record(&((struct dlil_ifnet *)ifp)->dl_if_detach); |
6691 | |
6692 | /* Clear logging parameters */ |
6693 | bzero(&ifp->if_log, sizeof (ifp->if_log)); |
6694 | |
6695 | /* Clear delegated interface info (reference released below) */ |
6696 | delegated_ifp = ifp->if_delegated.ifp; |
6697 | bzero(&ifp->if_delegated, sizeof (ifp->if_delegated)); |
6698 | |
6699 | /* Reset interface state */ |
6700 | bzero(&ifp->if_interface_state, sizeof(ifp->if_interface_state)); |
6701 | |
6702 | ifnet_lock_done(ifp); |
6703 | ifnet_head_done(); |
6704 | lck_mtx_unlock(rnh_lock); |
6705 | |
6706 | |
6707 | /* Release reference held on the delegated interface */ |
6708 | if (delegated_ifp != NULL) |
6709 | ifnet_release(delegated_ifp); |
6710 | |
6711 | /* Reset Link Quality Metric (unless loopback [lo0]) */ |
6712 | if (ifp != lo_ifp) |
6713 | if_lqm_update(ifp, IFNET_LQM_THRESH_OFF, 0); |
6714 | |
6715 | /* Reset TCP local statistics */ |
6716 | if (ifp->if_tcp_stat != NULL) |
6717 | bzero(ifp->if_tcp_stat, sizeof(*ifp->if_tcp_stat)); |
6718 | |
6719 | /* Reset UDP local statistics */ |
6720 | if (ifp->if_udp_stat != NULL) |
6721 | bzero(ifp->if_udp_stat, sizeof(*ifp->if_udp_stat)); |
6722 | |
6723 | /* Reset ifnet IPv4 stats */ |
6724 | if (ifp->if_ipv4_stat != NULL) |
6725 | bzero(ifp->if_ipv4_stat, sizeof(*ifp->if_ipv4_stat)); |
6726 | |
6727 | /* Reset ifnet IPv6 stats */ |
6728 | if (ifp->if_ipv6_stat != NULL) |
6729 | bzero(ifp->if_ipv6_stat, sizeof(*ifp->if_ipv6_stat)); |
6730 | |
6731 | /* Release memory held for interface link status report */ |
6732 | if (ifp->if_link_status != NULL) { |
6733 | FREE(ifp->if_link_status, M_TEMP); |
6734 | ifp->if_link_status = NULL; |
6735 | } |
6736 | |
6737 | /* Clear agent IDs */ |
6738 | if (ifp->if_agentids != NULL) { |
6739 | FREE(ifp->if_agentids, M_NETAGENT); |
6740 | ifp->if_agentids = NULL; |
6741 | } |
6742 | ifp->if_agentcount = 0; |
6743 | |
6744 | |
6745 | /* Let BPF know we're detaching */ |
6746 | bpfdetach(ifp); |
6747 | |
6748 | /* Mark the interface as DOWN */ |
6749 | if_down(ifp); |
6750 | |
6751 | /* Disable forwarding cached route */ |
6752 | lck_mtx_lock(&ifp->if_cached_route_lock); |
6753 | ifp->if_fwd_cacheok = 0; |
6754 | lck_mtx_unlock(&ifp->if_cached_route_lock); |
6755 | |
6756 | /* Disable data threshold and wait for any pending event posting */ |
6757 | ifp->if_data_threshold = 0; |
6758 | VERIFY(ifp->if_dt_tcall != NULL); |
6759 | (void) thread_call_cancel_wait(ifp->if_dt_tcall); |
6760 | |
6761 | /* |
6762 | * Drain any deferred IGMPv3/MLDv2 query responses, but keep the |
6763 | * references to the info structures and leave them attached to |
6764 | * this ifnet. |
6765 | */ |
6766 | #if INET |
6767 | igmp_domifdetach(ifp); |
6768 | #endif /* INET */ |
6769 | #if INET6 |
6770 | mld_domifdetach(ifp); |
6771 | #endif /* INET6 */ |
6772 | |
6773 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_DETACHING, NULL, 0); |
6774 | |
6775 | /* Let worker thread take care of the rest, to avoid reentrancy */ |
6776 | dlil_if_lock(); |
6777 | ifnet_detaching_enqueue(ifp); |
6778 | dlil_if_unlock(); |
6779 | |
6780 | return (0); |
6781 | } |
6782 | |
6783 | static void |
6784 | ifnet_detaching_enqueue(struct ifnet *ifp) |
6785 | { |
6786 | dlil_if_lock_assert(); |
6787 | |
6788 | ++ifnet_detaching_cnt; |
6789 | VERIFY(ifnet_detaching_cnt != 0); |
6790 | TAILQ_INSERT_TAIL(&ifnet_detaching_head, ifp, if_detaching_link); |
6791 | wakeup((caddr_t)&ifnet_delayed_run); |
6792 | } |
6793 | |
6794 | static struct ifnet * |
6795 | ifnet_detaching_dequeue(void) |
6796 | { |
6797 | struct ifnet *ifp; |
6798 | |
6799 | dlil_if_lock_assert(); |
6800 | |
6801 | ifp = TAILQ_FIRST(&ifnet_detaching_head); |
6802 | VERIFY(ifnet_detaching_cnt != 0 || ifp == NULL); |
6803 | if (ifp != NULL) { |
6804 | VERIFY(ifnet_detaching_cnt != 0); |
6805 | --ifnet_detaching_cnt; |
6806 | TAILQ_REMOVE(&ifnet_detaching_head, ifp, if_detaching_link); |
6807 | ifp->if_detaching_link.tqe_next = NULL; |
6808 | ifp->if_detaching_link.tqe_prev = NULL; |
6809 | } |
6810 | return (ifp); |
6811 | } |
6812 | |
6813 | static int |
6814 | ifnet_detacher_thread_cont(int err) |
6815 | { |
6816 | #pragma unused(err) |
6817 | struct ifnet *ifp; |
6818 | |
6819 | for (;;) { |
6820 | dlil_if_lock_assert(); |
6821 | while (ifnet_detaching_cnt == 0) { |
6822 | (void) msleep0(&ifnet_delayed_run, &dlil_ifnet_lock, |
6823 | (PZERO - 1), "ifnet_detacher_cont" , 0, |
6824 | ifnet_detacher_thread_cont); |
6825 | /* NOTREACHED */ |
6826 | } |
6827 | |
6828 | VERIFY(TAILQ_FIRST(&ifnet_detaching_head) != NULL); |
6829 | |
6830 | /* Take care of detaching ifnet */ |
6831 | ifp = ifnet_detaching_dequeue(); |
6832 | if (ifp != NULL) { |
6833 | dlil_if_unlock(); |
6834 | ifnet_detach_final(ifp); |
6835 | dlil_if_lock(); |
6836 | } |
6837 | } |
6838 | } |
6839 | |
6840 | static void |
6841 | ifnet_detacher_thread_func(void *v, wait_result_t w) |
6842 | { |
6843 | #pragma unused(v, w) |
6844 | dlil_if_lock(); |
6845 | (void) msleep0(&ifnet_delayed_run, &dlil_ifnet_lock, |
6846 | (PZERO - 1), "ifnet_detacher" , 0, ifnet_detacher_thread_cont); |
6847 | /* |
6848 | * msleep0() shouldn't have returned as PCATCH was not set; |
6849 | * therefore assert in this case. |
6850 | */ |
6851 | dlil_if_unlock(); |
6852 | VERIFY(0); |
6853 | } |
6854 | |
6855 | static void |
6856 | ifnet_detach_final(struct ifnet *ifp) |
6857 | { |
6858 | struct ifnet_filter *filter, *filter_next; |
6859 | struct ifnet_filter_head fhead; |
6860 | struct dlil_threading_info *inp; |
6861 | struct ifaddr *ifa; |
6862 | ifnet_detached_func if_free; |
6863 | int i; |
6864 | |
6865 | lck_mtx_lock(&ifp->if_ref_lock); |
6866 | if (!(ifp->if_refflags & IFRF_DETACHING)) { |
6867 | panic("%s: flags mismatch (detaching not set) ifp=%p" , |
6868 | __func__, ifp); |
6869 | /* NOTREACHED */ |
6870 | } |
6871 | |
6872 | /* |
6873 | * Wait until the existing IO references get released |
6874 | * before we proceed with ifnet_detach. This is not a |
6875 | * common case, so block without using a continuation. |
6876 | */ |
6877 | while (ifp->if_refio > 0) { |
6878 | printf("%s: Waiting for IO references on %s interface " |
6879 | "to be released\n" , __func__, if_name(ifp)); |
6880 | (void) msleep(&(ifp->if_refio), &ifp->if_ref_lock, |
6881 | (PZERO - 1), "ifnet_ioref_wait" , NULL); |
6882 | } |
6883 | lck_mtx_unlock(&ifp->if_ref_lock); |
6884 | |
6885 | /* Drain and destroy send queue */ |
6886 | ifclassq_teardown(ifp); |
6887 | |
6888 | /* Detach interface filters */ |
6889 | lck_mtx_lock(&ifp->if_flt_lock); |
6890 | if_flt_monitor_enter(ifp); |
6891 | |
6892 | LCK_MTX_ASSERT(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED); |
6893 | fhead = ifp->if_flt_head; |
6894 | TAILQ_INIT(&ifp->if_flt_head); |
6895 | |
6896 | for (filter = TAILQ_FIRST(&fhead); filter; filter = filter_next) { |
6897 | filter_next = TAILQ_NEXT(filter, filt_next); |
6898 | lck_mtx_unlock(&ifp->if_flt_lock); |
6899 | |
6900 | dlil_detach_filter_internal(filter, 1); |
6901 | lck_mtx_lock(&ifp->if_flt_lock); |
6902 | } |
6903 | if_flt_monitor_leave(ifp); |
6904 | lck_mtx_unlock(&ifp->if_flt_lock); |
6905 | |
6906 | /* Tell upper layers to drop their network addresses */ |
6907 | if_purgeaddrs(ifp); |
6908 | |
6909 | ifnet_lock_exclusive(ifp); |
6910 | |
6911 | /* Uplumb all protocols */ |
6912 | for (i = 0; i < PROTO_HASH_SLOTS; i++) { |
6913 | struct if_proto *proto; |
6914 | |
6915 | proto = SLIST_FIRST(&ifp->if_proto_hash[i]); |
6916 | while (proto != NULL) { |
6917 | protocol_family_t family = proto->protocol_family; |
6918 | ifnet_lock_done(ifp); |
6919 | proto_unplumb(family, ifp); |
6920 | ifnet_lock_exclusive(ifp); |
6921 | proto = SLIST_FIRST(&ifp->if_proto_hash[i]); |
6922 | } |
6923 | /* There should not be any protocols left */ |
6924 | VERIFY(SLIST_EMPTY(&ifp->if_proto_hash[i])); |
6925 | } |
6926 | zfree(dlif_phash_zone, ifp->if_proto_hash); |
6927 | ifp->if_proto_hash = NULL; |
6928 | |
6929 | /* Detach (permanent) link address from if_addrhead */ |
6930 | ifa = TAILQ_FIRST(&ifp->if_addrhead); |
6931 | VERIFY(ifnet_addrs[ifp->if_index - 1] == ifa); |
6932 | IFA_LOCK(ifa); |
6933 | if_detach_link_ifa(ifp, ifa); |
6934 | IFA_UNLOCK(ifa); |
6935 | |
6936 | /* Remove (permanent) link address from ifnet_addrs[] */ |
6937 | IFA_REMREF(ifa); |
6938 | ifnet_addrs[ifp->if_index - 1] = NULL; |
6939 | |
6940 | /* This interface should not be on {ifnet_head,detaching} */ |
6941 | VERIFY(ifp->if_link.tqe_next == NULL); |
6942 | VERIFY(ifp->if_link.tqe_prev == NULL); |
6943 | VERIFY(ifp->if_detaching_link.tqe_next == NULL); |
6944 | VERIFY(ifp->if_detaching_link.tqe_prev == NULL); |
6945 | VERIFY(ifp->if_ordered_link.tqe_next == NULL); |
6946 | VERIFY(ifp->if_ordered_link.tqe_prev == NULL); |
6947 | |
6948 | /* The slot should have been emptied */ |
6949 | VERIFY(ifindex2ifnet[ifp->if_index] == NULL); |
6950 | |
6951 | /* There should not be any addresses left */ |
6952 | VERIFY(TAILQ_EMPTY(&ifp->if_addrhead)); |
6953 | |
6954 | /* |
6955 | * Signal the starter thread to terminate itself. |
6956 | */ |
6957 | if (ifp->if_start_thread != THREAD_NULL) { |
6958 | lck_mtx_lock_spin(&ifp->if_start_lock); |
6959 | ifp->if_start_flags = 0; |
6960 | ifp->if_start_thread = THREAD_NULL; |
6961 | wakeup_one((caddr_t)&ifp->if_start_thread); |
6962 | lck_mtx_unlock(&ifp->if_start_lock); |
6963 | } |
6964 | |
6965 | /* |
6966 | * Signal the poller thread to terminate itself. |
6967 | */ |
6968 | if (ifp->if_poll_thread != THREAD_NULL) { |
6969 | lck_mtx_lock_spin(&ifp->if_poll_lock); |
6970 | ifp->if_poll_thread = THREAD_NULL; |
6971 | wakeup_one((caddr_t)&ifp->if_poll_thread); |
6972 | lck_mtx_unlock(&ifp->if_poll_lock); |
6973 | } |
6974 | |
6975 | /* |
6976 | * If thread affinity was set for the workloop thread, we will need |
6977 | * to tear down the affinity and release the extra reference count |
6978 | * taken at attach time. Does not apply to lo0 or other interfaces |
6979 | * without dedicated input threads. |
6980 | */ |
6981 | if ((inp = ifp->if_inp) != NULL) { |
6982 | VERIFY(inp != dlil_main_input_thread); |
6983 | |
6984 | if (inp->net_affinity) { |
6985 | struct thread *tp, *wtp, *ptp; |
6986 | |
6987 | lck_mtx_lock_spin(&inp->input_lck); |
6988 | wtp = inp->wloop_thr; |
6989 | inp->wloop_thr = THREAD_NULL; |
6990 | ptp = inp->poll_thr; |
6991 | inp->poll_thr = THREAD_NULL; |
6992 | tp = inp->input_thr; /* don't nullify now */ |
6993 | inp->tag = 0; |
6994 | inp->net_affinity = FALSE; |
6995 | lck_mtx_unlock(&inp->input_lck); |
6996 | |
6997 | /* Tear down poll thread affinity */ |
6998 | if (ptp != NULL) { |
6999 | VERIFY(ifp->if_eflags & IFEF_RXPOLL); |
7000 | (void) dlil_affinity_set(ptp, |
7001 | THREAD_AFFINITY_TAG_NULL); |
7002 | thread_deallocate(ptp); |
7003 | } |
7004 | |
7005 | /* Tear down workloop thread affinity */ |
7006 | if (wtp != NULL) { |
7007 | (void) dlil_affinity_set(wtp, |
7008 | THREAD_AFFINITY_TAG_NULL); |
7009 | thread_deallocate(wtp); |
7010 | } |
7011 | |
7012 | /* Tear down DLIL input thread affinity */ |
7013 | (void) dlil_affinity_set(tp, THREAD_AFFINITY_TAG_NULL); |
7014 | thread_deallocate(tp); |
7015 | } |
7016 | |
7017 | /* disassociate ifp DLIL input thread */ |
7018 | ifp->if_inp = NULL; |
7019 | |
7020 | /* tell the input thread to terminate */ |
7021 | lck_mtx_lock_spin(&inp->input_lck); |
7022 | inp->input_waiting |= DLIL_INPUT_TERMINATE; |
7023 | if (!(inp->input_waiting & DLIL_INPUT_RUNNING)) { |
7024 | wakeup_one((caddr_t)&inp->input_waiting); |
7025 | } |
7026 | lck_mtx_unlock(&inp->input_lck); |
7027 | ifnet_lock_done(ifp); |
7028 | |
7029 | /* wait for the input thread to terminate */ |
7030 | lck_mtx_lock_spin(&inp->input_lck); |
7031 | while ((inp->input_waiting & DLIL_INPUT_TERMINATE_COMPLETE) |
7032 | == 0) { |
7033 | (void) msleep(&inp->input_waiting, &inp->input_lck, |
7034 | (PZERO - 1) | PSPIN, inp->input_name, NULL); |
7035 | } |
7036 | lck_mtx_unlock(&inp->input_lck); |
7037 | ifnet_lock_exclusive(ifp); |
7038 | |
7039 | /* clean-up input thread state */ |
7040 | dlil_clean_threading_info(inp); |
7041 | |
7042 | } |
7043 | |
7044 | /* The driver might unload, so point these to ourselves */ |
7045 | if_free = ifp->if_free; |
7046 | ifp->if_output_dlil = ifp_if_output; |
7047 | ifp->if_output = ifp_if_output; |
7048 | ifp->if_pre_enqueue = ifp_if_output; |
7049 | ifp->if_start = ifp_if_start; |
7050 | ifp->if_output_ctl = ifp_if_ctl; |
7051 | ifp->if_input_dlil = ifp_if_input; |
7052 | ifp->if_input_poll = ifp_if_input_poll; |
7053 | ifp->if_input_ctl = ifp_if_ctl; |
7054 | ifp->if_ioctl = ifp_if_ioctl; |
7055 | ifp->if_set_bpf_tap = ifp_if_set_bpf_tap; |
7056 | ifp->if_free = ifp_if_free; |
7057 | ifp->if_demux = ifp_if_demux; |
7058 | ifp->if_event = ifp_if_event; |
7059 | ifp->if_framer_legacy = ifp_if_framer; |
7060 | ifp->if_framer = ifp_if_framer_extended; |
7061 | ifp->if_add_proto = ifp_if_add_proto; |
7062 | ifp->if_del_proto = ifp_if_del_proto; |
7063 | ifp->if_check_multi = ifp_if_check_multi; |
7064 | |
7065 | /* wipe out interface description */ |
7066 | VERIFY(ifp->if_desc.ifd_maxlen == IF_DESCSIZE); |
7067 | ifp->if_desc.ifd_len = 0; |
7068 | VERIFY(ifp->if_desc.ifd_desc != NULL); |
7069 | bzero(ifp->if_desc.ifd_desc, IF_DESCSIZE); |
7070 | |
7071 | /* there shouldn't be any delegation by now */ |
7072 | VERIFY(ifp->if_delegated.ifp == NULL); |
7073 | VERIFY(ifp->if_delegated.type == 0); |
7074 | VERIFY(ifp->if_delegated.family == 0); |
7075 | VERIFY(ifp->if_delegated.subfamily == 0); |
7076 | VERIFY(ifp->if_delegated.expensive == 0); |
7077 | |
7078 | /* QoS marking get cleared */ |
7079 | ifp->if_eflags &= ~IFEF_QOSMARKING_ENABLED; |
7080 | if_set_qosmarking_mode(ifp, IFRTYPE_QOSMARKING_MODE_NONE); |
7081 | |
7082 | |
7083 | ifnet_lock_done(ifp); |
7084 | |
7085 | #if PF |
7086 | /* |
7087 | * Detach this interface from packet filter, if enabled. |
7088 | */ |
7089 | pf_ifnet_hook(ifp, 0); |
7090 | #endif /* PF */ |
7091 | |
7092 | /* Filter list should be empty */ |
7093 | lck_mtx_lock_spin(&ifp->if_flt_lock); |
7094 | VERIFY(TAILQ_EMPTY(&ifp->if_flt_head)); |
7095 | VERIFY(ifp->if_flt_busy == 0); |
7096 | VERIFY(ifp->if_flt_waiters == 0); |
7097 | lck_mtx_unlock(&ifp->if_flt_lock); |
7098 | |
7099 | /* Last chance to drain send queue */ |
7100 | if_qflush(ifp, 0); |
7101 | |
7102 | /* Last chance to cleanup any cached route */ |
7103 | lck_mtx_lock(&ifp->if_cached_route_lock); |
7104 | VERIFY(!ifp->if_fwd_cacheok); |
7105 | ROUTE_RELEASE(&ifp->if_fwd_route); |
7106 | bzero(&ifp->if_fwd_route, sizeof (ifp->if_fwd_route)); |
7107 | ROUTE_RELEASE(&ifp->if_src_route); |
7108 | bzero(&ifp->if_src_route, sizeof (ifp->if_src_route)); |
7109 | ROUTE_RELEASE(&ifp->if_src_route6); |
7110 | bzero(&ifp->if_src_route6, sizeof (ifp->if_src_route6)); |
7111 | lck_mtx_unlock(&ifp->if_cached_route_lock); |
7112 | |
7113 | VERIFY(ifp->if_data_threshold == 0); |
7114 | VERIFY(ifp->if_dt_tcall != NULL); |
7115 | VERIFY(!thread_call_isactive(ifp->if_dt_tcall)); |
7116 | |
7117 | ifnet_llreach_ifdetach(ifp); |
7118 | |
7119 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_DETACHED, NULL, 0); |
7120 | |
7121 | /* |
7122 | * Finally, mark this ifnet as detached. |
7123 | */ |
7124 | lck_mtx_lock_spin(&ifp->if_ref_lock); |
7125 | if (!(ifp->if_refflags & IFRF_DETACHING)) { |
7126 | panic("%s: flags mismatch (detaching not set) ifp=%p" , |
7127 | __func__, ifp); |
7128 | /* NOTREACHED */ |
7129 | } |
7130 | ifp->if_refflags &= ~IFRF_DETACHING; |
7131 | lck_mtx_unlock(&ifp->if_ref_lock); |
7132 | if (if_free != NULL) |
7133 | if_free(ifp); |
7134 | |
7135 | if (dlil_verbose) |
7136 | printf("%s: detached\n" , if_name(ifp)); |
7137 | |
7138 | /* Release reference held during ifnet attach */ |
7139 | ifnet_release(ifp); |
7140 | } |
7141 | |
7142 | errno_t |
7143 | ifp_if_output(struct ifnet *ifp, struct mbuf *m) |
7144 | { |
7145 | #pragma unused(ifp) |
7146 | m_freem_list(m); |
7147 | return (0); |
7148 | } |
7149 | |
7150 | void |
7151 | ifp_if_start(struct ifnet *ifp) |
7152 | { |
7153 | ifnet_purge(ifp); |
7154 | } |
7155 | |
7156 | static errno_t |
7157 | ifp_if_input(struct ifnet *ifp, struct mbuf *m_head, |
7158 | struct mbuf *m_tail, const struct ifnet_stat_increment_param *s, |
7159 | boolean_t poll, struct thread *tp) |
7160 | { |
7161 | #pragma unused(ifp, m_tail, s, poll, tp) |
7162 | m_freem_list(m_head); |
7163 | return (ENXIO); |
7164 | } |
7165 | |
7166 | static void |
7167 | ifp_if_input_poll(struct ifnet *ifp, u_int32_t flags, u_int32_t max_cnt, |
7168 | struct mbuf **m_head, struct mbuf **m_tail, u_int32_t *cnt, u_int32_t *len) |
7169 | { |
7170 | #pragma unused(ifp, flags, max_cnt) |
7171 | if (m_head != NULL) |
7172 | *m_head = NULL; |
7173 | if (m_tail != NULL) |
7174 | *m_tail = NULL; |
7175 | if (cnt != NULL) |
7176 | *cnt = 0; |
7177 | if (len != NULL) |
7178 | *len = 0; |
7179 | } |
7180 | |
7181 | static errno_t |
7182 | ifp_if_ctl(struct ifnet *ifp, ifnet_ctl_cmd_t cmd, u_int32_t arglen, void *arg) |
7183 | { |
7184 | #pragma unused(ifp, cmd, arglen, arg) |
7185 | return (EOPNOTSUPP); |
7186 | } |
7187 | |
7188 | static errno_t |
7189 | ifp_if_demux(struct ifnet *ifp, struct mbuf *m, char *fh, protocol_family_t *pf) |
7190 | { |
7191 | #pragma unused(ifp, fh, pf) |
7192 | m_freem(m); |
7193 | return (EJUSTRETURN); |
7194 | } |
7195 | |
7196 | static errno_t |
7197 | ifp_if_add_proto(struct ifnet *ifp, protocol_family_t pf, |
7198 | const struct ifnet_demux_desc *da, u_int32_t dc) |
7199 | { |
7200 | #pragma unused(ifp, pf, da, dc) |
7201 | return (EINVAL); |
7202 | } |
7203 | |
7204 | static errno_t |
7205 | ifp_if_del_proto(struct ifnet *ifp, protocol_family_t pf) |
7206 | { |
7207 | #pragma unused(ifp, pf) |
7208 | return (EINVAL); |
7209 | } |
7210 | |
7211 | static errno_t |
7212 | ifp_if_check_multi(struct ifnet *ifp, const struct sockaddr *sa) |
7213 | { |
7214 | #pragma unused(ifp, sa) |
7215 | return (EOPNOTSUPP); |
7216 | } |
7217 | |
7218 | #if CONFIG_EMBEDDED |
7219 | static errno_t |
7220 | ifp_if_framer(struct ifnet *ifp, struct mbuf **m, |
7221 | const struct sockaddr *sa, const char *ll, const char *t, |
7222 | u_int32_t *pre, u_int32_t *post) |
7223 | #else |
7224 | static errno_t |
7225 | ifp_if_framer(struct ifnet *ifp, struct mbuf **m, |
7226 | const struct sockaddr *sa, const char *ll, const char *t) |
7227 | #endif /* !CONFIG_EMBEDDED */ |
7228 | { |
7229 | #pragma unused(ifp, m, sa, ll, t) |
7230 | #if CONFIG_EMBEDDED |
7231 | return (ifp_if_framer_extended(ifp, m, sa, ll, t, pre, post)); |
7232 | #else |
7233 | return (ifp_if_framer_extended(ifp, m, sa, ll, t, NULL, NULL)); |
7234 | #endif /* !CONFIG_EMBEDDED */ |
7235 | } |
7236 | |
7237 | static errno_t |
7238 | ifp_if_framer_extended(struct ifnet *ifp, struct mbuf **m, |
7239 | const struct sockaddr *sa, const char *ll, const char *t, |
7240 | u_int32_t *pre, u_int32_t *post) |
7241 | { |
7242 | #pragma unused(ifp, sa, ll, t) |
7243 | m_freem(*m); |
7244 | *m = NULL; |
7245 | |
7246 | if (pre != NULL) |
7247 | *pre = 0; |
7248 | if (post != NULL) |
7249 | *post = 0; |
7250 | |
7251 | return (EJUSTRETURN); |
7252 | } |
7253 | |
7254 | errno_t |
7255 | ifp_if_ioctl(struct ifnet *ifp, unsigned long cmd, void *arg) |
7256 | { |
7257 | #pragma unused(ifp, cmd, arg) |
7258 | return (EOPNOTSUPP); |
7259 | } |
7260 | |
7261 | static errno_t |
7262 | ifp_if_set_bpf_tap(struct ifnet *ifp, bpf_tap_mode tm, bpf_packet_func f) |
7263 | { |
7264 | #pragma unused(ifp, tm, f) |
7265 | /* XXX not sure what to do here */ |
7266 | return (0); |
7267 | } |
7268 | |
7269 | static void |
7270 | ifp_if_free(struct ifnet *ifp) |
7271 | { |
7272 | #pragma unused(ifp) |
7273 | } |
7274 | |
7275 | static void |
7276 | ifp_if_event(struct ifnet *ifp, const struct kev_msg *e) |
7277 | { |
7278 | #pragma unused(ifp, e) |
7279 | } |
7280 | |
7281 | int dlil_if_acquire(u_int32_t family, const void *uniqueid, |
7282 | size_t uniqueid_len, const char *ifxname, struct ifnet **ifp) |
7283 | { |
7284 | struct ifnet *ifp1 = NULL; |
7285 | struct dlil_ifnet *dlifp1 = NULL; |
7286 | void *buf, *base, **pbuf; |
7287 | int ret = 0; |
7288 | |
7289 | VERIFY(*ifp == NULL); |
7290 | dlil_if_lock(); |
7291 | /* |
7292 | * We absolutely can't have an interface with the same name |
7293 | * in in-use state. |
7294 | * To make sure of that list has to be traversed completely |
7295 | */ |
7296 | TAILQ_FOREACH(dlifp1, &dlil_ifnet_head, dl_if_link) { |
7297 | ifp1 = (struct ifnet *)dlifp1; |
7298 | |
7299 | if (ifp1->if_family != family) |
7300 | continue; |
7301 | |
7302 | /* |
7303 | * If interface is in use, return EBUSY if either unique id |
7304 | * or interface extended names are the same |
7305 | */ |
7306 | lck_mtx_lock(&dlifp1->dl_if_lock); |
7307 | if (strncmp(ifxname, ifp1->if_xname, IFXNAMSIZ) == 0) { |
7308 | if (dlifp1->dl_if_flags & DLIF_INUSE) { |
7309 | lck_mtx_unlock(&dlifp1->dl_if_lock); |
7310 | ret = EBUSY; |
7311 | goto end; |
7312 | } |
7313 | } |
7314 | |
7315 | if (uniqueid_len) { |
7316 | if (uniqueid_len == dlifp1->dl_if_uniqueid_len && |
7317 | bcmp(uniqueid, dlifp1->dl_if_uniqueid, uniqueid_len) == 0) { |
7318 | if (dlifp1->dl_if_flags & DLIF_INUSE) { |
7319 | lck_mtx_unlock(&dlifp1->dl_if_lock); |
7320 | ret = EBUSY; |
7321 | goto end; |
7322 | } else { |
7323 | dlifp1->dl_if_flags |= (DLIF_INUSE|DLIF_REUSE); |
7324 | /* Cache the first interface that can be recycled */ |
7325 | if (*ifp == NULL) |
7326 | *ifp = ifp1; |
7327 | /* |
7328 | * XXX Do not break or jump to end as we have to traverse |
7329 | * the whole list to ensure there are no name collisions |
7330 | */ |
7331 | } |
7332 | } |
7333 | } |
7334 | lck_mtx_unlock(&dlifp1->dl_if_lock); |
7335 | } |
7336 | |
7337 | /* If there's an interface that can be recycled, use that */ |
7338 | if (*ifp != NULL) |
7339 | goto end; |
7340 | |
7341 | /* no interface found, allocate a new one */ |
7342 | buf = zalloc(dlif_zone); |
7343 | if (buf == NULL) { |
7344 | ret = ENOMEM; |
7345 | goto end; |
7346 | } |
7347 | bzero(buf, dlif_bufsize); |
7348 | |
7349 | /* Get the 64-bit aligned base address for this object */ |
7350 | base = (void *)P2ROUNDUP((intptr_t)buf + sizeof (u_int64_t), |
7351 | sizeof (u_int64_t)); |
7352 | VERIFY(((intptr_t)base + dlif_size) <= ((intptr_t)buf + dlif_bufsize)); |
7353 | |
7354 | /* |
7355 | * Wind back a pointer size from the aligned base and |
7356 | * save the original address so we can free it later. |
7357 | */ |
7358 | pbuf = (void **)((intptr_t)base - sizeof (void *)); |
7359 | *pbuf = buf; |
7360 | dlifp1 = base; |
7361 | |
7362 | if (uniqueid_len) { |
7363 | MALLOC(dlifp1->dl_if_uniqueid, void *, uniqueid_len, |
7364 | M_NKE, M_WAITOK); |
7365 | if (dlifp1->dl_if_uniqueid == NULL) { |
7366 | zfree(dlif_zone, buf); |
7367 | ret = ENOMEM; |
7368 | goto end; |
7369 | } |
7370 | bcopy(uniqueid, dlifp1->dl_if_uniqueid, uniqueid_len); |
7371 | dlifp1->dl_if_uniqueid_len = uniqueid_len; |
7372 | } |
7373 | |
7374 | ifp1 = (struct ifnet *)dlifp1; |
7375 | dlifp1->dl_if_flags = DLIF_INUSE; |
7376 | if (ifnet_debug) { |
7377 | dlifp1->dl_if_flags |= DLIF_DEBUG; |
7378 | dlifp1->dl_if_trace = dlil_if_trace; |
7379 | } |
7380 | ifp1->if_name = dlifp1->dl_if_namestorage; |
7381 | ifp1->if_xname = dlifp1->dl_if_xnamestorage; |
7382 | |
7383 | /* initialize interface description */ |
7384 | ifp1->if_desc.ifd_maxlen = IF_DESCSIZE; |
7385 | ifp1->if_desc.ifd_len = 0; |
7386 | ifp1->if_desc.ifd_desc = dlifp1->dl_if_descstorage; |
7387 | |
7388 | |
7389 | #if CONFIG_MACF_NET |
7390 | mac_ifnet_label_init(ifp1); |
7391 | #endif |
7392 | |
7393 | if ((ret = dlil_alloc_local_stats(ifp1)) != 0) { |
7394 | DLIL_PRINTF("%s: failed to allocate if local stats, " |
7395 | "error: %d\n" , __func__, ret); |
7396 | /* This probably shouldn't be fatal */ |
7397 | ret = 0; |
7398 | } |
7399 | |
7400 | lck_mtx_init(&dlifp1->dl_if_lock, ifnet_lock_group, ifnet_lock_attr); |
7401 | lck_rw_init(&ifp1->if_lock, ifnet_lock_group, ifnet_lock_attr); |
7402 | lck_mtx_init(&ifp1->if_ref_lock, ifnet_lock_group, ifnet_lock_attr); |
7403 | lck_mtx_init(&ifp1->if_flt_lock, ifnet_lock_group, ifnet_lock_attr); |
7404 | lck_mtx_init(&ifp1->if_addrconfig_lock, ifnet_lock_group, |
7405 | ifnet_lock_attr); |
7406 | lck_rw_init(&ifp1->if_llreach_lock, ifnet_lock_group, ifnet_lock_attr); |
7407 | #if INET |
7408 | lck_rw_init(&ifp1->if_inetdata_lock, ifnet_lock_group, |
7409 | ifnet_lock_attr); |
7410 | ifp1->if_inetdata = NULL; |
7411 | #endif |
7412 | #if INET6 |
7413 | lck_rw_init(&ifp1->if_inet6data_lock, ifnet_lock_group, |
7414 | ifnet_lock_attr); |
7415 | ifp1->if_inet6data = NULL; |
7416 | #endif |
7417 | lck_rw_init(&ifp1->if_link_status_lock, ifnet_lock_group, |
7418 | ifnet_lock_attr); |
7419 | ifp1->if_link_status = NULL; |
7420 | |
7421 | /* for send data paths */ |
7422 | lck_mtx_init(&ifp1->if_start_lock, ifnet_snd_lock_group, |
7423 | ifnet_lock_attr); |
7424 | lck_mtx_init(&ifp1->if_cached_route_lock, ifnet_snd_lock_group, |
7425 | ifnet_lock_attr); |
7426 | lck_mtx_init(&ifp1->if_snd.ifcq_lock, ifnet_snd_lock_group, |
7427 | ifnet_lock_attr); |
7428 | |
7429 | /* for receive data paths */ |
7430 | lck_mtx_init(&ifp1->if_poll_lock, ifnet_rcv_lock_group, |
7431 | ifnet_lock_attr); |
7432 | |
7433 | /* thread call allocation is done with sleeping zalloc */ |
7434 | ifp1->if_dt_tcall = thread_call_allocate_with_options(dlil_dt_tcall_fn, |
7435 | ifp1, THREAD_CALL_PRIORITY_KERNEL, THREAD_CALL_OPTIONS_ONCE); |
7436 | if (ifp1->if_dt_tcall == NULL) { |
7437 | panic_plain("%s: couldn't create if_dt_tcall" , __func__); |
7438 | /* NOTREACHED */ |
7439 | } |
7440 | |
7441 | TAILQ_INSERT_TAIL(&dlil_ifnet_head, dlifp1, dl_if_link); |
7442 | |
7443 | *ifp = ifp1; |
7444 | |
7445 | end: |
7446 | dlil_if_unlock(); |
7447 | |
7448 | VERIFY(dlifp1 == NULL || (IS_P2ALIGNED(dlifp1, sizeof (u_int64_t)) && |
7449 | IS_P2ALIGNED(&ifp1->if_data, sizeof (u_int64_t)))); |
7450 | |
7451 | return (ret); |
7452 | } |
7453 | |
7454 | __private_extern__ void |
7455 | dlil_if_release(ifnet_t ifp) |
7456 | { |
7457 | struct dlil_ifnet *dlifp = (struct dlil_ifnet *)ifp; |
7458 | |
7459 | VERIFY(OSDecrementAtomic64(&net_api_stats.nas_ifnet_alloc_count) > 0); |
7460 | if (!(ifp->if_xflags & IFXF_ALLOC_KPI)) { |
7461 | VERIFY(OSDecrementAtomic64(&net_api_stats.nas_ifnet_alloc_os_count) > 0); |
7462 | } |
7463 | |
7464 | ifnet_lock_exclusive(ifp); |
7465 | lck_mtx_lock(&dlifp->dl_if_lock); |
7466 | dlifp->dl_if_flags &= ~DLIF_INUSE; |
7467 | strlcpy(dlifp->dl_if_namestorage, ifp->if_name, IFNAMSIZ); |
7468 | ifp->if_name = dlifp->dl_if_namestorage; |
7469 | /* Reset external name (name + unit) */ |
7470 | ifp->if_xname = dlifp->dl_if_xnamestorage; |
7471 | snprintf(__DECONST(char *, ifp->if_xname), IFXNAMSIZ, |
7472 | "%s?" , ifp->if_name); |
7473 | lck_mtx_unlock(&dlifp->dl_if_lock); |
7474 | #if CONFIG_MACF_NET |
7475 | /* |
7476 | * We can either recycle the MAC label here or in dlil_if_acquire(). |
7477 | * It seems logical to do it here but this means that anything that |
7478 | * still has a handle on ifp will now see it as unlabeled. |
7479 | * Since the interface is "dead" that may be OK. Revisit later. |
7480 | */ |
7481 | mac_ifnet_label_recycle(ifp); |
7482 | #endif |
7483 | ifnet_lock_done(ifp); |
7484 | } |
7485 | |
7486 | __private_extern__ void |
7487 | dlil_if_lock(void) |
7488 | { |
7489 | lck_mtx_lock(&dlil_ifnet_lock); |
7490 | } |
7491 | |
7492 | __private_extern__ void |
7493 | dlil_if_unlock(void) |
7494 | { |
7495 | lck_mtx_unlock(&dlil_ifnet_lock); |
7496 | } |
7497 | |
7498 | __private_extern__ void |
7499 | dlil_if_lock_assert(void) |
7500 | { |
7501 | LCK_MTX_ASSERT(&dlil_ifnet_lock, LCK_MTX_ASSERT_OWNED); |
7502 | } |
7503 | |
7504 | __private_extern__ void |
7505 | dlil_proto_unplumb_all(struct ifnet *ifp) |
7506 | { |
7507 | /* |
7508 | * if_proto_hash[0-2] are for PF_INET, PF_INET6 and PF_VLAN, where |
7509 | * each bucket contains exactly one entry; PF_VLAN does not need an |
7510 | * explicit unplumb. |
7511 | * |
7512 | * if_proto_hash[3] is for other protocols; we expect anything |
7513 | * in this bucket to respond to the DETACHING event (which would |
7514 | * have happened by now) and do the unplumb then. |
7515 | */ |
7516 | (void) proto_unplumb(PF_INET, ifp); |
7517 | #if INET6 |
7518 | (void) proto_unplumb(PF_INET6, ifp); |
7519 | #endif /* INET6 */ |
7520 | } |
7521 | |
7522 | static void |
7523 | ifp_src_route_copyout(struct ifnet *ifp, struct route *dst) |
7524 | { |
7525 | lck_mtx_lock_spin(&ifp->if_cached_route_lock); |
7526 | lck_mtx_convert_spin(&ifp->if_cached_route_lock); |
7527 | |
7528 | route_copyout(dst, &ifp->if_src_route, sizeof (*dst)); |
7529 | |
7530 | lck_mtx_unlock(&ifp->if_cached_route_lock); |
7531 | } |
7532 | |
7533 | static void |
7534 | ifp_src_route_copyin(struct ifnet *ifp, struct route *src) |
7535 | { |
7536 | lck_mtx_lock_spin(&ifp->if_cached_route_lock); |
7537 | lck_mtx_convert_spin(&ifp->if_cached_route_lock); |
7538 | |
7539 | if (ifp->if_fwd_cacheok) { |
7540 | route_copyin(src, &ifp->if_src_route, sizeof (*src)); |
7541 | } else { |
7542 | ROUTE_RELEASE(src); |
7543 | } |
7544 | lck_mtx_unlock(&ifp->if_cached_route_lock); |
7545 | } |
7546 | |
7547 | #if INET6 |
7548 | static void |
7549 | ifp_src_route6_copyout(struct ifnet *ifp, struct route_in6 *dst) |
7550 | { |
7551 | lck_mtx_lock_spin(&ifp->if_cached_route_lock); |
7552 | lck_mtx_convert_spin(&ifp->if_cached_route_lock); |
7553 | |
7554 | route_copyout((struct route *)dst, (struct route *)&ifp->if_src_route6, |
7555 | sizeof (*dst)); |
7556 | |
7557 | lck_mtx_unlock(&ifp->if_cached_route_lock); |
7558 | } |
7559 | |
7560 | static void |
7561 | ifp_src_route6_copyin(struct ifnet *ifp, struct route_in6 *src) |
7562 | { |
7563 | lck_mtx_lock_spin(&ifp->if_cached_route_lock); |
7564 | lck_mtx_convert_spin(&ifp->if_cached_route_lock); |
7565 | |
7566 | if (ifp->if_fwd_cacheok) { |
7567 | route_copyin((struct route *)src, |
7568 | (struct route *)&ifp->if_src_route6, sizeof (*src)); |
7569 | } else { |
7570 | ROUTE_RELEASE(src); |
7571 | } |
7572 | lck_mtx_unlock(&ifp->if_cached_route_lock); |
7573 | } |
7574 | #endif /* INET6 */ |
7575 | |
7576 | struct rtentry * |
7577 | ifnet_cached_rtlookup_inet(struct ifnet *ifp, struct in_addr src_ip) |
7578 | { |
7579 | struct route src_rt; |
7580 | struct sockaddr_in *dst; |
7581 | |
7582 | dst = (struct sockaddr_in *)(void *)(&src_rt.ro_dst); |
7583 | |
7584 | ifp_src_route_copyout(ifp, &src_rt); |
7585 | |
7586 | if (ROUTE_UNUSABLE(&src_rt) || src_ip.s_addr != dst->sin_addr.s_addr) { |
7587 | ROUTE_RELEASE(&src_rt); |
7588 | if (dst->sin_family != AF_INET) { |
7589 | bzero(&src_rt.ro_dst, sizeof (src_rt.ro_dst)); |
7590 | dst->sin_len = sizeof (src_rt.ro_dst); |
7591 | dst->sin_family = AF_INET; |
7592 | } |
7593 | dst->sin_addr = src_ip; |
7594 | |
7595 | VERIFY(src_rt.ro_rt == NULL); |
7596 | src_rt.ro_rt = rtalloc1_scoped((struct sockaddr *)dst, |
7597 | 0, 0, ifp->if_index); |
7598 | |
7599 | if (src_rt.ro_rt != NULL) { |
7600 | /* retain a ref, copyin consumes one */ |
7601 | struct rtentry *rte = src_rt.ro_rt; |
7602 | RT_ADDREF(rte); |
7603 | ifp_src_route_copyin(ifp, &src_rt); |
7604 | src_rt.ro_rt = rte; |
7605 | } |
7606 | } |
7607 | |
7608 | return (src_rt.ro_rt); |
7609 | } |
7610 | |
7611 | #if INET6 |
7612 | struct rtentry * |
7613 | ifnet_cached_rtlookup_inet6(struct ifnet *ifp, struct in6_addr *src_ip6) |
7614 | { |
7615 | struct route_in6 src_rt; |
7616 | |
7617 | ifp_src_route6_copyout(ifp, &src_rt); |
7618 | |
7619 | if (ROUTE_UNUSABLE(&src_rt) || |
7620 | !IN6_ARE_ADDR_EQUAL(src_ip6, &src_rt.ro_dst.sin6_addr)) { |
7621 | ROUTE_RELEASE(&src_rt); |
7622 | if (src_rt.ro_dst.sin6_family != AF_INET6) { |
7623 | bzero(&src_rt.ro_dst, sizeof (src_rt.ro_dst)); |
7624 | src_rt.ro_dst.sin6_len = sizeof (src_rt.ro_dst); |
7625 | src_rt.ro_dst.sin6_family = AF_INET6; |
7626 | } |
7627 | src_rt.ro_dst.sin6_scope_id = in6_addr2scopeid(ifp, src_ip6); |
7628 | bcopy(src_ip6, &src_rt.ro_dst.sin6_addr, |
7629 | sizeof (src_rt.ro_dst.sin6_addr)); |
7630 | |
7631 | if (src_rt.ro_rt == NULL) { |
7632 | src_rt.ro_rt = rtalloc1_scoped( |
7633 | (struct sockaddr *)&src_rt.ro_dst, 0, 0, |
7634 | ifp->if_index); |
7635 | |
7636 | if (src_rt.ro_rt != NULL) { |
7637 | /* retain a ref, copyin consumes one */ |
7638 | struct rtentry *rte = src_rt.ro_rt; |
7639 | RT_ADDREF(rte); |
7640 | ifp_src_route6_copyin(ifp, &src_rt); |
7641 | src_rt.ro_rt = rte; |
7642 | } |
7643 | } |
7644 | } |
7645 | |
7646 | return (src_rt.ro_rt); |
7647 | } |
7648 | #endif /* INET6 */ |
7649 | |
7650 | void |
7651 | if_lqm_update(struct ifnet *ifp, int lqm, int locked) |
7652 | { |
7653 | struct kev_dl_link_quality_metric_data ev_lqm_data; |
7654 | |
7655 | VERIFY(lqm >= IFNET_LQM_MIN && lqm <= IFNET_LQM_MAX); |
7656 | |
7657 | /* Normalize to edge */ |
7658 | if (lqm >= 0 && lqm <= IFNET_LQM_THRESH_ABORT) { |
7659 | lqm = IFNET_LQM_THRESH_ABORT; |
7660 | atomic_bitset_32(&tcbinfo.ipi_flags, |
7661 | INPCBINFO_HANDLE_LQM_ABORT); |
7662 | inpcb_timer_sched(&tcbinfo, INPCB_TIMER_FAST); |
7663 | } else if (lqm > IFNET_LQM_THRESH_ABORT && |
7664 | lqm <= IFNET_LQM_THRESH_MINIMALLY_VIABLE) { |
7665 | lqm = IFNET_LQM_THRESH_MINIMALLY_VIABLE; |
7666 | } else if (lqm > IFNET_LQM_THRESH_MINIMALLY_VIABLE && |
7667 | lqm <= IFNET_LQM_THRESH_POOR) { |
7668 | lqm = IFNET_LQM_THRESH_POOR; |
7669 | } else if (lqm > IFNET_LQM_THRESH_POOR && |
7670 | lqm <= IFNET_LQM_THRESH_GOOD) { |
7671 | lqm = IFNET_LQM_THRESH_GOOD; |
7672 | } |
7673 | |
7674 | /* |
7675 | * Take the lock if needed |
7676 | */ |
7677 | if (!locked) |
7678 | ifnet_lock_exclusive(ifp); |
7679 | |
7680 | if (lqm == ifp->if_interface_state.lqm_state && |
7681 | (ifp->if_interface_state.valid_bitmask & |
7682 | IF_INTERFACE_STATE_LQM_STATE_VALID)) { |
7683 | /* |
7684 | * Release the lock if was not held by the caller |
7685 | */ |
7686 | if (!locked) |
7687 | ifnet_lock_done(ifp); |
7688 | return; /* nothing to update */ |
7689 | } |
7690 | ifp->if_interface_state.valid_bitmask |= |
7691 | IF_INTERFACE_STATE_LQM_STATE_VALID; |
7692 | ifp->if_interface_state.lqm_state = lqm; |
7693 | |
7694 | /* |
7695 | * Don't want to hold the lock when issuing kernel events |
7696 | */ |
7697 | ifnet_lock_done(ifp); |
7698 | |
7699 | bzero(&ev_lqm_data, sizeof (ev_lqm_data)); |
7700 | ev_lqm_data.link_quality_metric = lqm; |
7701 | |
7702 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_LINK_QUALITY_METRIC_CHANGED, |
7703 | (struct net_event_data *)&ev_lqm_data, sizeof (ev_lqm_data)); |
7704 | |
7705 | /* |
7706 | * Reacquire the lock for the caller |
7707 | */ |
7708 | if (locked) |
7709 | ifnet_lock_exclusive(ifp); |
7710 | } |
7711 | |
7712 | static void |
7713 | if_rrc_state_update(struct ifnet *ifp, unsigned int rrc_state) |
7714 | { |
7715 | struct kev_dl_rrc_state kev; |
7716 | |
7717 | if (rrc_state == ifp->if_interface_state.rrc_state && |
7718 | (ifp->if_interface_state.valid_bitmask & |
7719 | IF_INTERFACE_STATE_RRC_STATE_VALID)) |
7720 | return; |
7721 | |
7722 | ifp->if_interface_state.valid_bitmask |= |
7723 | IF_INTERFACE_STATE_RRC_STATE_VALID; |
7724 | |
7725 | ifp->if_interface_state.rrc_state = rrc_state; |
7726 | |
7727 | /* |
7728 | * Don't want to hold the lock when issuing kernel events |
7729 | */ |
7730 | ifnet_lock_done(ifp); |
7731 | |
7732 | bzero(&kev, sizeof(struct kev_dl_rrc_state)); |
7733 | kev.rrc_state = rrc_state; |
7734 | |
7735 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_RRC_STATE_CHANGED, |
7736 | (struct net_event_data *)&kev, sizeof(struct kev_dl_rrc_state)); |
7737 | |
7738 | ifnet_lock_exclusive(ifp); |
7739 | } |
7740 | |
7741 | errno_t |
7742 | if_state_update(struct ifnet *ifp, |
7743 | struct if_interface_state *if_interface_state) |
7744 | { |
7745 | u_short if_index_available = 0; |
7746 | |
7747 | ifnet_lock_exclusive(ifp); |
7748 | |
7749 | if ((ifp->if_type != IFT_CELLULAR) && |
7750 | (if_interface_state->valid_bitmask & |
7751 | IF_INTERFACE_STATE_RRC_STATE_VALID)) { |
7752 | ifnet_lock_done(ifp); |
7753 | return (ENOTSUP); |
7754 | } |
7755 | if ((if_interface_state->valid_bitmask & |
7756 | IF_INTERFACE_STATE_LQM_STATE_VALID) && |
7757 | (if_interface_state->lqm_state < IFNET_LQM_MIN || |
7758 | if_interface_state->lqm_state > IFNET_LQM_MAX)) { |
7759 | ifnet_lock_done(ifp); |
7760 | return (EINVAL); |
7761 | } |
7762 | if ((if_interface_state->valid_bitmask & |
7763 | IF_INTERFACE_STATE_RRC_STATE_VALID) && |
7764 | if_interface_state->rrc_state != |
7765 | IF_INTERFACE_STATE_RRC_STATE_IDLE && |
7766 | if_interface_state->rrc_state != |
7767 | IF_INTERFACE_STATE_RRC_STATE_CONNECTED) { |
7768 | ifnet_lock_done(ifp); |
7769 | return (EINVAL); |
7770 | } |
7771 | |
7772 | if (if_interface_state->valid_bitmask & |
7773 | IF_INTERFACE_STATE_LQM_STATE_VALID) { |
7774 | if_lqm_update(ifp, if_interface_state->lqm_state, 1); |
7775 | } |
7776 | if (if_interface_state->valid_bitmask & |
7777 | IF_INTERFACE_STATE_RRC_STATE_VALID) { |
7778 | if_rrc_state_update(ifp, if_interface_state->rrc_state); |
7779 | } |
7780 | if (if_interface_state->valid_bitmask & |
7781 | IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID) { |
7782 | ifp->if_interface_state.valid_bitmask |= |
7783 | IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID; |
7784 | ifp->if_interface_state.interface_availability = |
7785 | if_interface_state->interface_availability; |
7786 | |
7787 | if (ifp->if_interface_state.interface_availability == |
7788 | IF_INTERFACE_STATE_INTERFACE_AVAILABLE) { |
7789 | if_index_available = ifp->if_index; |
7790 | } |
7791 | } |
7792 | ifnet_lock_done(ifp); |
7793 | |
7794 | /* |
7795 | * Check if the TCP connections going on this interface should be |
7796 | * forced to send probe packets instead of waiting for TCP timers |
7797 | * to fire. This will be done when there is an explicit |
7798 | * notification that the interface became available. |
7799 | */ |
7800 | if (if_index_available > 0) |
7801 | tcp_interface_send_probe(if_index_available); |
7802 | |
7803 | return (0); |
7804 | } |
7805 | |
7806 | void |
7807 | if_get_state(struct ifnet *ifp, |
7808 | struct if_interface_state *if_interface_state) |
7809 | { |
7810 | ifnet_lock_shared(ifp); |
7811 | |
7812 | if_interface_state->valid_bitmask = 0; |
7813 | |
7814 | if (ifp->if_interface_state.valid_bitmask & |
7815 | IF_INTERFACE_STATE_RRC_STATE_VALID) { |
7816 | if_interface_state->valid_bitmask |= |
7817 | IF_INTERFACE_STATE_RRC_STATE_VALID; |
7818 | if_interface_state->rrc_state = |
7819 | ifp->if_interface_state.rrc_state; |
7820 | } |
7821 | if (ifp->if_interface_state.valid_bitmask & |
7822 | IF_INTERFACE_STATE_LQM_STATE_VALID) { |
7823 | if_interface_state->valid_bitmask |= |
7824 | IF_INTERFACE_STATE_LQM_STATE_VALID; |
7825 | if_interface_state->lqm_state = |
7826 | ifp->if_interface_state.lqm_state; |
7827 | } |
7828 | if (ifp->if_interface_state.valid_bitmask & |
7829 | IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID) { |
7830 | if_interface_state->valid_bitmask |= |
7831 | IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID; |
7832 | if_interface_state->interface_availability = |
7833 | ifp->if_interface_state.interface_availability; |
7834 | } |
7835 | |
7836 | ifnet_lock_done(ifp); |
7837 | } |
7838 | |
7839 | errno_t |
7840 | if_probe_connectivity(struct ifnet *ifp, u_int32_t conn_probe) |
7841 | { |
7842 | ifnet_lock_exclusive(ifp); |
7843 | if (conn_probe > 1) { |
7844 | ifnet_lock_done(ifp); |
7845 | return (EINVAL); |
7846 | } |
7847 | if (conn_probe == 0) |
7848 | ifp->if_eflags &= ~IFEF_PROBE_CONNECTIVITY; |
7849 | else |
7850 | ifp->if_eflags |= IFEF_PROBE_CONNECTIVITY; |
7851 | ifnet_lock_done(ifp); |
7852 | |
7853 | #if NECP |
7854 | necp_update_all_clients(); |
7855 | #endif /* NECP */ |
7856 | |
7857 | tcp_probe_connectivity(ifp, conn_probe); |
7858 | return (0); |
7859 | } |
7860 | |
7861 | /* for uuid.c */ |
7862 | int |
7863 | uuid_get_ethernet(u_int8_t *node) |
7864 | { |
7865 | struct ifnet *ifp; |
7866 | struct sockaddr_dl *sdl; |
7867 | |
7868 | ifnet_head_lock_shared(); |
7869 | TAILQ_FOREACH(ifp, &ifnet_head, if_link) { |
7870 | ifnet_lock_shared(ifp); |
7871 | IFA_LOCK_SPIN(ifp->if_lladdr); |
7872 | sdl = (struct sockaddr_dl *)(void *)ifp->if_lladdr->ifa_addr; |
7873 | if (sdl->sdl_type == IFT_ETHER) { |
7874 | memcpy(node, LLADDR(sdl), ETHER_ADDR_LEN); |
7875 | IFA_UNLOCK(ifp->if_lladdr); |
7876 | ifnet_lock_done(ifp); |
7877 | ifnet_head_done(); |
7878 | return (0); |
7879 | } |
7880 | IFA_UNLOCK(ifp->if_lladdr); |
7881 | ifnet_lock_done(ifp); |
7882 | } |
7883 | ifnet_head_done(); |
7884 | |
7885 | return (-1); |
7886 | } |
7887 | |
7888 | static int |
7889 | sysctl_rxpoll SYSCTL_HANDLER_ARGS |
7890 | { |
7891 | #pragma unused(arg1, arg2) |
7892 | uint32_t i; |
7893 | int err; |
7894 | |
7895 | i = if_rxpoll; |
7896 | |
7897 | err = sysctl_handle_int(oidp, &i, 0, req); |
7898 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
7899 | return (err); |
7900 | |
7901 | if (net_rxpoll == 0) |
7902 | return (ENXIO); |
7903 | |
7904 | if_rxpoll = i; |
7905 | return (err); |
7906 | } |
7907 | |
7908 | static int |
7909 | sysctl_rxpoll_mode_holdtime SYSCTL_HANDLER_ARGS |
7910 | { |
7911 | #pragma unused(arg1, arg2) |
7912 | uint64_t q; |
7913 | int err; |
7914 | |
7915 | q = if_rxpoll_mode_holdtime; |
7916 | |
7917 | err = sysctl_handle_quad(oidp, &q, 0, req); |
7918 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
7919 | return (err); |
7920 | |
7921 | if (q < IF_RXPOLL_MODE_HOLDTIME_MIN) |
7922 | q = IF_RXPOLL_MODE_HOLDTIME_MIN; |
7923 | |
7924 | if_rxpoll_mode_holdtime = q; |
7925 | |
7926 | return (err); |
7927 | } |
7928 | |
7929 | static int |
7930 | sysctl_rxpoll_sample_holdtime SYSCTL_HANDLER_ARGS |
7931 | { |
7932 | #pragma unused(arg1, arg2) |
7933 | uint64_t q; |
7934 | int err; |
7935 | |
7936 | q = if_rxpoll_sample_holdtime; |
7937 | |
7938 | err = sysctl_handle_quad(oidp, &q, 0, req); |
7939 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
7940 | return (err); |
7941 | |
7942 | if (q < IF_RXPOLL_SAMPLETIME_MIN) |
7943 | q = IF_RXPOLL_SAMPLETIME_MIN; |
7944 | |
7945 | if_rxpoll_sample_holdtime = q; |
7946 | |
7947 | return (err); |
7948 | } |
7949 | |
7950 | static int |
7951 | sysctl_rxpoll_interval_time SYSCTL_HANDLER_ARGS |
7952 | { |
7953 | #pragma unused(arg1, arg2) |
7954 | uint64_t q; |
7955 | int err; |
7956 | |
7957 | q = if_rxpoll_interval_time; |
7958 | |
7959 | err = sysctl_handle_quad(oidp, &q, 0, req); |
7960 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
7961 | return (err); |
7962 | |
7963 | if (q < IF_RXPOLL_INTERVALTIME_MIN) |
7964 | q = IF_RXPOLL_INTERVALTIME_MIN; |
7965 | |
7966 | if_rxpoll_interval_time = q; |
7967 | |
7968 | return (err); |
7969 | } |
7970 | |
7971 | static int |
7972 | sysctl_rxpoll_wlowat SYSCTL_HANDLER_ARGS |
7973 | { |
7974 | #pragma unused(arg1, arg2) |
7975 | uint32_t i; |
7976 | int err; |
7977 | |
7978 | i = if_rxpoll_wlowat; |
7979 | |
7980 | err = sysctl_handle_int(oidp, &i, 0, req); |
7981 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
7982 | return (err); |
7983 | |
7984 | if (i == 0 || i >= if_rxpoll_whiwat) |
7985 | return (EINVAL); |
7986 | |
7987 | if_rxpoll_wlowat = i; |
7988 | return (err); |
7989 | } |
7990 | |
7991 | static int |
7992 | sysctl_rxpoll_whiwat SYSCTL_HANDLER_ARGS |
7993 | { |
7994 | #pragma unused(arg1, arg2) |
7995 | uint32_t i; |
7996 | int err; |
7997 | |
7998 | i = if_rxpoll_whiwat; |
7999 | |
8000 | err = sysctl_handle_int(oidp, &i, 0, req); |
8001 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
8002 | return (err); |
8003 | |
8004 | if (i <= if_rxpoll_wlowat) |
8005 | return (EINVAL); |
8006 | |
8007 | if_rxpoll_whiwat = i; |
8008 | return (err); |
8009 | } |
8010 | |
8011 | static int |
8012 | sysctl_sndq_maxlen SYSCTL_HANDLER_ARGS |
8013 | { |
8014 | #pragma unused(arg1, arg2) |
8015 | int i, err; |
8016 | |
8017 | i = if_sndq_maxlen; |
8018 | |
8019 | err = sysctl_handle_int(oidp, &i, 0, req); |
8020 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
8021 | return (err); |
8022 | |
8023 | if (i < IF_SNDQ_MINLEN) |
8024 | i = IF_SNDQ_MINLEN; |
8025 | |
8026 | if_sndq_maxlen = i; |
8027 | return (err); |
8028 | } |
8029 | |
8030 | static int |
8031 | sysctl_rcvq_maxlen SYSCTL_HANDLER_ARGS |
8032 | { |
8033 | #pragma unused(arg1, arg2) |
8034 | int i, err; |
8035 | |
8036 | i = if_rcvq_maxlen; |
8037 | |
8038 | err = sysctl_handle_int(oidp, &i, 0, req); |
8039 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
8040 | return (err); |
8041 | |
8042 | if (i < IF_RCVQ_MINLEN) |
8043 | i = IF_RCVQ_MINLEN; |
8044 | |
8045 | if_rcvq_maxlen = i; |
8046 | return (err); |
8047 | } |
8048 | |
8049 | void |
8050 | dlil_node_present(struct ifnet *ifp, struct sockaddr *sa, |
8051 | int32_t , int lqm, int npm, u_int8_t srvinfo[48]) |
8052 | { |
8053 | struct kev_dl_node_presence kev; |
8054 | struct sockaddr_dl *sdl; |
8055 | struct sockaddr_in6 *sin6; |
8056 | |
8057 | VERIFY(ifp); |
8058 | VERIFY(sa); |
8059 | VERIFY(sa->sa_family == AF_LINK || sa->sa_family == AF_INET6); |
8060 | |
8061 | bzero(&kev, sizeof (kev)); |
8062 | sin6 = &kev.sin6_node_address; |
8063 | sdl = &kev.sdl_node_address; |
8064 | nd6_alt_node_addr_decompose(ifp, sa, sdl, sin6); |
8065 | kev.rssi = rssi; |
8066 | kev.link_quality_metric = lqm; |
8067 | kev.node_proximity_metric = npm; |
8068 | bcopy(srvinfo, kev.node_service_info, sizeof (kev.node_service_info)); |
8069 | |
8070 | nd6_alt_node_present(ifp, sin6, sdl, rssi, lqm, npm); |
8071 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_NODE_PRESENCE, |
8072 | &kev.link_data, sizeof (kev)); |
8073 | } |
8074 | |
8075 | void |
8076 | dlil_node_absent(struct ifnet *ifp, struct sockaddr *sa) |
8077 | { |
8078 | struct kev_dl_node_absence kev; |
8079 | struct sockaddr_in6 *sin6; |
8080 | struct sockaddr_dl *sdl; |
8081 | |
8082 | VERIFY(ifp); |
8083 | VERIFY(sa); |
8084 | VERIFY(sa->sa_family == AF_LINK || sa->sa_family == AF_INET6); |
8085 | |
8086 | bzero(&kev, sizeof (kev)); |
8087 | sin6 = &kev.sin6_node_address; |
8088 | sdl = &kev.sdl_node_address; |
8089 | nd6_alt_node_addr_decompose(ifp, sa, sdl, sin6); |
8090 | |
8091 | nd6_alt_node_absent(ifp, sin6); |
8092 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_NODE_ABSENCE, |
8093 | &kev.link_data, sizeof (kev)); |
8094 | } |
8095 | |
8096 | const void * |
8097 | dlil_ifaddr_bytes(const struct sockaddr_dl *sdl, size_t *sizep, |
8098 | kauth_cred_t *credp) |
8099 | { |
8100 | const u_int8_t *bytes; |
8101 | size_t size; |
8102 | |
8103 | bytes = CONST_LLADDR(sdl); |
8104 | size = sdl->sdl_alen; |
8105 | |
8106 | #if CONFIG_MACF |
8107 | if (dlil_lladdr_ckreq) { |
8108 | switch (sdl->sdl_type) { |
8109 | case IFT_ETHER: |
8110 | case IFT_IEEE1394: |
8111 | break; |
8112 | default: |
8113 | credp = NULL; |
8114 | break; |
8115 | }; |
8116 | |
8117 | if (credp && mac_system_check_info(*credp, "net.link.addr" )) { |
8118 | static const u_int8_t unspec[FIREWIRE_EUI64_LEN] = { |
8119 | [0] = 2 |
8120 | }; |
8121 | |
8122 | bytes = unspec; |
8123 | } |
8124 | } |
8125 | #else |
8126 | #pragma unused(credp) |
8127 | #endif |
8128 | |
8129 | if (sizep != NULL) *sizep = size; |
8130 | return (bytes); |
8131 | } |
8132 | |
8133 | void |
8134 | dlil_report_issues(struct ifnet *ifp, u_int8_t modid[DLIL_MODIDLEN], |
8135 | u_int8_t info[DLIL_MODARGLEN]) |
8136 | { |
8137 | struct kev_dl_issues kev; |
8138 | struct timeval tv; |
8139 | |
8140 | VERIFY(ifp != NULL); |
8141 | VERIFY(modid != NULL); |
8142 | _CASSERT(sizeof (kev.modid) == DLIL_MODIDLEN); |
8143 | _CASSERT(sizeof (kev.info) == DLIL_MODARGLEN); |
8144 | |
8145 | bzero(&kev, sizeof (kev)); |
8146 | |
8147 | microtime(&tv); |
8148 | kev.timestamp = tv.tv_sec; |
8149 | bcopy(modid, &kev.modid, DLIL_MODIDLEN); |
8150 | if (info != NULL) |
8151 | bcopy(info, &kev.info, DLIL_MODARGLEN); |
8152 | |
8153 | dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_ISSUES, |
8154 | &kev.link_data, sizeof (kev)); |
8155 | } |
8156 | |
8157 | errno_t |
8158 | ifnet_getset_opportunistic(ifnet_t ifp, u_long cmd, struct ifreq *ifr, |
8159 | struct proc *p) |
8160 | { |
8161 | u_int32_t level = IFNET_THROTTLE_OFF; |
8162 | errno_t result = 0; |
8163 | |
8164 | VERIFY(cmd == SIOCSIFOPPORTUNISTIC || cmd == SIOCGIFOPPORTUNISTIC); |
8165 | |
8166 | if (cmd == SIOCSIFOPPORTUNISTIC) { |
8167 | /* |
8168 | * XXX: Use priv_check_cred() instead of root check? |
8169 | */ |
8170 | if ((result = proc_suser(p)) != 0) |
8171 | return (result); |
8172 | |
8173 | if (ifr->ifr_opportunistic.ifo_flags == |
8174 | IFRIFOF_BLOCK_OPPORTUNISTIC) |
8175 | level = IFNET_THROTTLE_OPPORTUNISTIC; |
8176 | else if (ifr->ifr_opportunistic.ifo_flags == 0) |
8177 | level = IFNET_THROTTLE_OFF; |
8178 | else |
8179 | result = EINVAL; |
8180 | |
8181 | if (result == 0) |
8182 | result = ifnet_set_throttle(ifp, level); |
8183 | } else if ((result = ifnet_get_throttle(ifp, &level)) == 0) { |
8184 | ifr->ifr_opportunistic.ifo_flags = 0; |
8185 | if (level == IFNET_THROTTLE_OPPORTUNISTIC) { |
8186 | ifr->ifr_opportunistic.ifo_flags |= |
8187 | IFRIFOF_BLOCK_OPPORTUNISTIC; |
8188 | } |
8189 | } |
8190 | |
8191 | /* |
8192 | * Return the count of current opportunistic connections |
8193 | * over the interface. |
8194 | */ |
8195 | if (result == 0) { |
8196 | uint32_t flags = 0; |
8197 | flags |= (cmd == SIOCSIFOPPORTUNISTIC) ? |
8198 | INPCB_OPPORTUNISTIC_SETCMD : 0; |
8199 | flags |= (level == IFNET_THROTTLE_OPPORTUNISTIC) ? |
8200 | INPCB_OPPORTUNISTIC_THROTTLEON : 0; |
8201 | ifr->ifr_opportunistic.ifo_inuse = |
8202 | udp_count_opportunistic(ifp->if_index, flags) + |
8203 | tcp_count_opportunistic(ifp->if_index, flags); |
8204 | } |
8205 | |
8206 | if (result == EALREADY) |
8207 | result = 0; |
8208 | |
8209 | return (result); |
8210 | } |
8211 | |
8212 | int |
8213 | ifnet_get_throttle(struct ifnet *ifp, u_int32_t *level) |
8214 | { |
8215 | struct ifclassq *ifq; |
8216 | int err = 0; |
8217 | |
8218 | if (!(ifp->if_eflags & IFEF_TXSTART)) |
8219 | return (ENXIO); |
8220 | |
8221 | *level = IFNET_THROTTLE_OFF; |
8222 | |
8223 | ifq = &ifp->if_snd; |
8224 | IFCQ_LOCK(ifq); |
8225 | /* Throttling works only for IFCQ, not ALTQ instances */ |
8226 | if (IFCQ_IS_ENABLED(ifq)) |
8227 | IFCQ_GET_THROTTLE(ifq, *level, err); |
8228 | IFCQ_UNLOCK(ifq); |
8229 | |
8230 | return (err); |
8231 | } |
8232 | |
8233 | int |
8234 | ifnet_set_throttle(struct ifnet *ifp, u_int32_t level) |
8235 | { |
8236 | struct ifclassq *ifq; |
8237 | int err = 0; |
8238 | |
8239 | if (!(ifp->if_eflags & IFEF_TXSTART)) |
8240 | return (ENXIO); |
8241 | |
8242 | ifq = &ifp->if_snd; |
8243 | |
8244 | switch (level) { |
8245 | case IFNET_THROTTLE_OFF: |
8246 | case IFNET_THROTTLE_OPPORTUNISTIC: |
8247 | break; |
8248 | default: |
8249 | return (EINVAL); |
8250 | } |
8251 | |
8252 | IFCQ_LOCK(ifq); |
8253 | if (IFCQ_IS_ENABLED(ifq)) |
8254 | IFCQ_SET_THROTTLE(ifq, level, err); |
8255 | IFCQ_UNLOCK(ifq); |
8256 | |
8257 | if (err == 0) { |
8258 | printf("%s: throttling level set to %d\n" , if_name(ifp), |
8259 | level); |
8260 | if (level == IFNET_THROTTLE_OFF) |
8261 | ifnet_start(ifp); |
8262 | } |
8263 | |
8264 | return (err); |
8265 | } |
8266 | |
8267 | errno_t |
8268 | ifnet_getset_log(ifnet_t ifp, u_long cmd, struct ifreq *ifr, |
8269 | struct proc *p) |
8270 | { |
8271 | #pragma unused(p) |
8272 | errno_t result = 0; |
8273 | uint32_t flags; |
8274 | int level, category, subcategory; |
8275 | |
8276 | VERIFY(cmd == SIOCSIFLOG || cmd == SIOCGIFLOG); |
8277 | |
8278 | if (cmd == SIOCSIFLOG) { |
8279 | if ((result = priv_check_cred(kauth_cred_get(), |
8280 | PRIV_NET_INTERFACE_CONTROL, 0)) != 0) |
8281 | return (result); |
8282 | |
8283 | level = ifr->ifr_log.ifl_level; |
8284 | if (level < IFNET_LOG_MIN || level > IFNET_LOG_MAX) |
8285 | result = EINVAL; |
8286 | |
8287 | flags = ifr->ifr_log.ifl_flags; |
8288 | if ((flags &= IFNET_LOGF_MASK) == 0) |
8289 | result = EINVAL; |
8290 | |
8291 | category = ifr->ifr_log.ifl_category; |
8292 | subcategory = ifr->ifr_log.ifl_subcategory; |
8293 | |
8294 | if (result == 0) |
8295 | result = ifnet_set_log(ifp, level, flags, |
8296 | category, subcategory); |
8297 | } else { |
8298 | result = ifnet_get_log(ifp, &level, &flags, &category, |
8299 | &subcategory); |
8300 | if (result == 0) { |
8301 | ifr->ifr_log.ifl_level = level; |
8302 | ifr->ifr_log.ifl_flags = flags; |
8303 | ifr->ifr_log.ifl_category = category; |
8304 | ifr->ifr_log.ifl_subcategory = subcategory; |
8305 | } |
8306 | } |
8307 | |
8308 | return (result); |
8309 | } |
8310 | |
8311 | int |
8312 | ifnet_set_log(struct ifnet *ifp, int32_t level, uint32_t flags, |
8313 | int32_t category, int32_t subcategory) |
8314 | { |
8315 | int err = 0; |
8316 | |
8317 | VERIFY(level >= IFNET_LOG_MIN && level <= IFNET_LOG_MAX); |
8318 | VERIFY(flags & IFNET_LOGF_MASK); |
8319 | |
8320 | /* |
8321 | * The logging level applies to all facilities; make sure to |
8322 | * update them all with the most current level. |
8323 | */ |
8324 | flags |= ifp->if_log.flags; |
8325 | |
8326 | if (ifp->if_output_ctl != NULL) { |
8327 | struct ifnet_log_params l; |
8328 | |
8329 | bzero(&l, sizeof (l)); |
8330 | l.level = level; |
8331 | l.flags = flags; |
8332 | l.flags &= ~IFNET_LOGF_DLIL; |
8333 | l.category = category; |
8334 | l.subcategory = subcategory; |
8335 | |
8336 | /* Send this request to lower layers */ |
8337 | if (l.flags != 0) { |
8338 | err = ifp->if_output_ctl(ifp, IFNET_CTL_SET_LOG, |
8339 | sizeof (l), &l); |
8340 | } |
8341 | } else if ((flags & ~IFNET_LOGF_DLIL) && ifp->if_output_ctl == NULL) { |
8342 | /* |
8343 | * If targeted to the lower layers without an output |
8344 | * control callback registered on the interface, just |
8345 | * silently ignore facilities other than ours. |
8346 | */ |
8347 | flags &= IFNET_LOGF_DLIL; |
8348 | if (flags == 0 && (!(ifp->if_log.flags & IFNET_LOGF_DLIL))) |
8349 | level = 0; |
8350 | } |
8351 | |
8352 | if (err == 0) { |
8353 | if ((ifp->if_log.level = level) == IFNET_LOG_DEFAULT) |
8354 | ifp->if_log.flags = 0; |
8355 | else |
8356 | ifp->if_log.flags |= flags; |
8357 | |
8358 | log(LOG_INFO, "%s: logging level set to %d flags=%b " |
8359 | "arg=%b, category=%d subcategory=%d\n" , if_name(ifp), |
8360 | ifp->if_log.level, ifp->if_log.flags, |
8361 | IFNET_LOGF_BITS, flags, IFNET_LOGF_BITS, |
8362 | category, subcategory); |
8363 | } |
8364 | |
8365 | return (err); |
8366 | } |
8367 | |
8368 | int |
8369 | ifnet_get_log(struct ifnet *ifp, int32_t *level, uint32_t *flags, |
8370 | int32_t *category, int32_t *subcategory) |
8371 | { |
8372 | if (level != NULL) |
8373 | *level = ifp->if_log.level; |
8374 | if (flags != NULL) |
8375 | *flags = ifp->if_log.flags; |
8376 | if (category != NULL) |
8377 | *category = ifp->if_log.category; |
8378 | if (subcategory != NULL) |
8379 | *subcategory = ifp->if_log.subcategory; |
8380 | |
8381 | return (0); |
8382 | } |
8383 | |
8384 | int |
8385 | ifnet_notify_address(struct ifnet *ifp, int af) |
8386 | { |
8387 | struct ifnet_notify_address_params na; |
8388 | |
8389 | #if PF |
8390 | (void) pf_ifaddr_hook(ifp); |
8391 | #endif /* PF */ |
8392 | |
8393 | if (ifp->if_output_ctl == NULL) |
8394 | return (EOPNOTSUPP); |
8395 | |
8396 | bzero(&na, sizeof (na)); |
8397 | na.address_family = af; |
8398 | |
8399 | return (ifp->if_output_ctl(ifp, IFNET_CTL_NOTIFY_ADDRESS, |
8400 | sizeof (na), &na)); |
8401 | } |
8402 | |
8403 | errno_t |
8404 | ifnet_flowid(struct ifnet *ifp, uint32_t *flowid) |
8405 | { |
8406 | if (ifp == NULL || flowid == NULL) { |
8407 | return (EINVAL); |
8408 | } else if (!(ifp->if_eflags & IFEF_TXSTART) || |
8409 | !IF_FULLY_ATTACHED(ifp)) { |
8410 | return (ENXIO); |
8411 | } |
8412 | |
8413 | *flowid = ifp->if_flowhash; |
8414 | |
8415 | return (0); |
8416 | } |
8417 | |
8418 | errno_t |
8419 | ifnet_disable_output(struct ifnet *ifp) |
8420 | { |
8421 | int err; |
8422 | |
8423 | if (ifp == NULL) { |
8424 | return (EINVAL); |
8425 | } else if (!(ifp->if_eflags & IFEF_TXSTART) || |
8426 | !IF_FULLY_ATTACHED(ifp)) { |
8427 | return (ENXIO); |
8428 | } |
8429 | |
8430 | if ((err = ifnet_fc_add(ifp)) == 0) { |
8431 | lck_mtx_lock_spin(&ifp->if_start_lock); |
8432 | ifp->if_start_flags |= IFSF_FLOW_CONTROLLED; |
8433 | lck_mtx_unlock(&ifp->if_start_lock); |
8434 | } |
8435 | return (err); |
8436 | } |
8437 | |
8438 | errno_t |
8439 | ifnet_enable_output(struct ifnet *ifp) |
8440 | { |
8441 | if (ifp == NULL) { |
8442 | return (EINVAL); |
8443 | } else if (!(ifp->if_eflags & IFEF_TXSTART) || |
8444 | !IF_FULLY_ATTACHED(ifp)) { |
8445 | return (ENXIO); |
8446 | } |
8447 | |
8448 | ifnet_start_common(ifp, TRUE); |
8449 | return (0); |
8450 | } |
8451 | |
8452 | void |
8453 | ifnet_flowadv(uint32_t flowhash) |
8454 | { |
8455 | struct ifnet_fc_entry *ifce; |
8456 | struct ifnet *ifp; |
8457 | |
8458 | ifce = ifnet_fc_get(flowhash); |
8459 | if (ifce == NULL) |
8460 | return; |
8461 | |
8462 | VERIFY(ifce->ifce_ifp != NULL); |
8463 | ifp = ifce->ifce_ifp; |
8464 | |
8465 | /* flow hash gets recalculated per attach, so check */ |
8466 | if (ifnet_is_attached(ifp, 1)) { |
8467 | if (ifp->if_flowhash == flowhash) |
8468 | (void) ifnet_enable_output(ifp); |
8469 | ifnet_decr_iorefcnt(ifp); |
8470 | } |
8471 | ifnet_fc_entry_free(ifce); |
8472 | } |
8473 | |
8474 | /* |
8475 | * Function to compare ifnet_fc_entries in ifnet flow control tree |
8476 | */ |
8477 | static inline int |
8478 | ifce_cmp(const struct ifnet_fc_entry *fc1, const struct ifnet_fc_entry *fc2) |
8479 | { |
8480 | return (fc1->ifce_flowhash - fc2->ifce_flowhash); |
8481 | } |
8482 | |
8483 | static int |
8484 | ifnet_fc_add(struct ifnet *ifp) |
8485 | { |
8486 | struct ifnet_fc_entry keyfc, *ifce; |
8487 | uint32_t flowhash; |
8488 | |
8489 | VERIFY(ifp != NULL && (ifp->if_eflags & IFEF_TXSTART)); |
8490 | VERIFY(ifp->if_flowhash != 0); |
8491 | flowhash = ifp->if_flowhash; |
8492 | |
8493 | bzero(&keyfc, sizeof (keyfc)); |
8494 | keyfc.ifce_flowhash = flowhash; |
8495 | |
8496 | lck_mtx_lock_spin(&ifnet_fc_lock); |
8497 | ifce = RB_FIND(ifnet_fc_tree, &ifnet_fc_tree, &keyfc); |
8498 | if (ifce != NULL && ifce->ifce_ifp == ifp) { |
8499 | /* Entry is already in ifnet_fc_tree, return */ |
8500 | lck_mtx_unlock(&ifnet_fc_lock); |
8501 | return (0); |
8502 | } |
8503 | |
8504 | if (ifce != NULL) { |
8505 | /* |
8506 | * There is a different fc entry with the same flow hash |
8507 | * but different ifp pointer. There can be a collision |
8508 | * on flow hash but the probability is low. Let's just |
8509 | * avoid adding a second one when there is a collision. |
8510 | */ |
8511 | lck_mtx_unlock(&ifnet_fc_lock); |
8512 | return (EAGAIN); |
8513 | } |
8514 | |
8515 | /* become regular mutex */ |
8516 | lck_mtx_convert_spin(&ifnet_fc_lock); |
8517 | |
8518 | ifce = zalloc(ifnet_fc_zone); |
8519 | if (ifce == NULL) { |
8520 | /* memory allocation failed */ |
8521 | lck_mtx_unlock(&ifnet_fc_lock); |
8522 | return (ENOMEM); |
8523 | } |
8524 | bzero(ifce, ifnet_fc_zone_size); |
8525 | |
8526 | ifce->ifce_flowhash = flowhash; |
8527 | ifce->ifce_ifp = ifp; |
8528 | |
8529 | RB_INSERT(ifnet_fc_tree, &ifnet_fc_tree, ifce); |
8530 | lck_mtx_unlock(&ifnet_fc_lock); |
8531 | return (0); |
8532 | } |
8533 | |
8534 | static struct ifnet_fc_entry * |
8535 | ifnet_fc_get(uint32_t flowhash) |
8536 | { |
8537 | struct ifnet_fc_entry keyfc, *ifce; |
8538 | struct ifnet *ifp; |
8539 | |
8540 | bzero(&keyfc, sizeof (keyfc)); |
8541 | keyfc.ifce_flowhash = flowhash; |
8542 | |
8543 | lck_mtx_lock_spin(&ifnet_fc_lock); |
8544 | ifce = RB_FIND(ifnet_fc_tree, &ifnet_fc_tree, &keyfc); |
8545 | if (ifce == NULL) { |
8546 | /* Entry is not present in ifnet_fc_tree, return */ |
8547 | lck_mtx_unlock(&ifnet_fc_lock); |
8548 | return (NULL); |
8549 | } |
8550 | |
8551 | RB_REMOVE(ifnet_fc_tree, &ifnet_fc_tree, ifce); |
8552 | |
8553 | VERIFY(ifce->ifce_ifp != NULL); |
8554 | ifp = ifce->ifce_ifp; |
8555 | |
8556 | /* become regular mutex */ |
8557 | lck_mtx_convert_spin(&ifnet_fc_lock); |
8558 | |
8559 | if (!ifnet_is_attached(ifp, 0)) { |
8560 | /* |
8561 | * This ifp is not attached or in the process of being |
8562 | * detached; just don't process it. |
8563 | */ |
8564 | ifnet_fc_entry_free(ifce); |
8565 | ifce = NULL; |
8566 | } |
8567 | lck_mtx_unlock(&ifnet_fc_lock); |
8568 | |
8569 | return (ifce); |
8570 | } |
8571 | |
8572 | static void |
8573 | ifnet_fc_entry_free(struct ifnet_fc_entry *ifce) |
8574 | { |
8575 | zfree(ifnet_fc_zone, ifce); |
8576 | } |
8577 | |
8578 | static uint32_t |
8579 | ifnet_calc_flowhash(struct ifnet *ifp) |
8580 | { |
8581 | struct ifnet_flowhash_key fh __attribute__((aligned(8))); |
8582 | uint32_t flowhash = 0; |
8583 | |
8584 | if (ifnet_flowhash_seed == 0) |
8585 | ifnet_flowhash_seed = RandomULong(); |
8586 | |
8587 | bzero(&fh, sizeof (fh)); |
8588 | |
8589 | (void) snprintf(fh.ifk_name, sizeof (fh.ifk_name), "%s" , ifp->if_name); |
8590 | fh.ifk_unit = ifp->if_unit; |
8591 | fh.ifk_flags = ifp->if_flags; |
8592 | fh.ifk_eflags = ifp->if_eflags; |
8593 | fh.ifk_capabilities = ifp->if_capabilities; |
8594 | fh.ifk_capenable = ifp->if_capenable; |
8595 | fh.ifk_output_sched_model = ifp->if_output_sched_model; |
8596 | fh.ifk_rand1 = RandomULong(); |
8597 | fh.ifk_rand2 = RandomULong(); |
8598 | |
8599 | try_again: |
8600 | flowhash = net_flowhash(&fh, sizeof (fh), ifnet_flowhash_seed); |
8601 | if (flowhash == 0) { |
8602 | /* try to get a non-zero flowhash */ |
8603 | ifnet_flowhash_seed = RandomULong(); |
8604 | goto try_again; |
8605 | } |
8606 | |
8607 | return (flowhash); |
8608 | } |
8609 | |
8610 | int |
8611 | ifnet_set_netsignature(struct ifnet *ifp, uint8_t family, uint8_t len, |
8612 | uint16_t flags, uint8_t *data) |
8613 | { |
8614 | #pragma unused(flags) |
8615 | int error = 0; |
8616 | |
8617 | switch (family) { |
8618 | case AF_INET: |
8619 | if_inetdata_lock_exclusive(ifp); |
8620 | if (IN_IFEXTRA(ifp) != NULL) { |
8621 | if (len == 0) { |
8622 | /* Allow clearing the signature */ |
8623 | IN_IFEXTRA(ifp)->netsig_len = 0; |
8624 | bzero(IN_IFEXTRA(ifp)->netsig, |
8625 | sizeof (IN_IFEXTRA(ifp)->netsig)); |
8626 | if_inetdata_lock_done(ifp); |
8627 | break; |
8628 | } else if (len > sizeof (IN_IFEXTRA(ifp)->netsig)) { |
8629 | error = EINVAL; |
8630 | if_inetdata_lock_done(ifp); |
8631 | break; |
8632 | } |
8633 | IN_IFEXTRA(ifp)->netsig_len = len; |
8634 | bcopy(data, IN_IFEXTRA(ifp)->netsig, len); |
8635 | } else { |
8636 | error = ENOMEM; |
8637 | } |
8638 | if_inetdata_lock_done(ifp); |
8639 | break; |
8640 | |
8641 | case AF_INET6: |
8642 | if_inet6data_lock_exclusive(ifp); |
8643 | if (IN6_IFEXTRA(ifp) != NULL) { |
8644 | if (len == 0) { |
8645 | /* Allow clearing the signature */ |
8646 | IN6_IFEXTRA(ifp)->netsig_len = 0; |
8647 | bzero(IN6_IFEXTRA(ifp)->netsig, |
8648 | sizeof (IN6_IFEXTRA(ifp)->netsig)); |
8649 | if_inet6data_lock_done(ifp); |
8650 | break; |
8651 | } else if (len > sizeof (IN6_IFEXTRA(ifp)->netsig)) { |
8652 | error = EINVAL; |
8653 | if_inet6data_lock_done(ifp); |
8654 | break; |
8655 | } |
8656 | IN6_IFEXTRA(ifp)->netsig_len = len; |
8657 | bcopy(data, IN6_IFEXTRA(ifp)->netsig, len); |
8658 | } else { |
8659 | error = ENOMEM; |
8660 | } |
8661 | if_inet6data_lock_done(ifp); |
8662 | break; |
8663 | |
8664 | default: |
8665 | error = EINVAL; |
8666 | break; |
8667 | } |
8668 | |
8669 | return (error); |
8670 | } |
8671 | |
8672 | int |
8673 | ifnet_get_netsignature(struct ifnet *ifp, uint8_t family, uint8_t *len, |
8674 | uint16_t *flags, uint8_t *data) |
8675 | { |
8676 | int error = 0; |
8677 | |
8678 | if (ifp == NULL || len == NULL || data == NULL) |
8679 | return (EINVAL); |
8680 | |
8681 | switch (family) { |
8682 | case AF_INET: |
8683 | if_inetdata_lock_shared(ifp); |
8684 | if (IN_IFEXTRA(ifp) != NULL) { |
8685 | if (*len == 0 || *len < IN_IFEXTRA(ifp)->netsig_len) { |
8686 | error = EINVAL; |
8687 | if_inetdata_lock_done(ifp); |
8688 | break; |
8689 | } |
8690 | if ((*len = IN_IFEXTRA(ifp)->netsig_len) > 0) |
8691 | bcopy(IN_IFEXTRA(ifp)->netsig, data, *len); |
8692 | else |
8693 | error = ENOENT; |
8694 | } else { |
8695 | error = ENOMEM; |
8696 | } |
8697 | if_inetdata_lock_done(ifp); |
8698 | break; |
8699 | |
8700 | case AF_INET6: |
8701 | if_inet6data_lock_shared(ifp); |
8702 | if (IN6_IFEXTRA(ifp) != NULL) { |
8703 | if (*len == 0 || *len < IN6_IFEXTRA(ifp)->netsig_len) { |
8704 | error = EINVAL; |
8705 | if_inet6data_lock_done(ifp); |
8706 | break; |
8707 | } |
8708 | if ((*len = IN6_IFEXTRA(ifp)->netsig_len) > 0) |
8709 | bcopy(IN6_IFEXTRA(ifp)->netsig, data, *len); |
8710 | else |
8711 | error = ENOENT; |
8712 | } else { |
8713 | error = ENOMEM; |
8714 | } |
8715 | if_inet6data_lock_done(ifp); |
8716 | break; |
8717 | |
8718 | default: |
8719 | error = EINVAL; |
8720 | break; |
8721 | } |
8722 | |
8723 | if (error == 0 && flags != NULL) |
8724 | *flags = 0; |
8725 | |
8726 | return (error); |
8727 | } |
8728 | |
8729 | #if INET6 |
8730 | int |
8731 | ifnet_set_nat64prefix(struct ifnet *ifp, struct ipv6_prefix *prefixes) |
8732 | { |
8733 | int i, error = 0, one_set = 0; |
8734 | |
8735 | if_inet6data_lock_exclusive(ifp); |
8736 | |
8737 | if (IN6_IFEXTRA(ifp) == NULL) { |
8738 | error = ENOMEM; |
8739 | goto out; |
8740 | } |
8741 | |
8742 | for (i = 0; i < NAT64_MAX_NUM_PREFIXES; i++) { |
8743 | uint32_t prefix_len = |
8744 | prefixes[i].prefix_len; |
8745 | struct in6_addr *prefix = |
8746 | &prefixes[i].ipv6_prefix; |
8747 | |
8748 | if (prefix_len == 0) { |
8749 | clat_log0((LOG_DEBUG, |
8750 | "NAT64 prefixes purged from Interface %s\n" , |
8751 | if_name(ifp))); |
8752 | /* Allow clearing the signature */ |
8753 | IN6_IFEXTRA(ifp)->nat64_prefixes[i].prefix_len = 0; |
8754 | bzero(&IN6_IFEXTRA(ifp)->nat64_prefixes[i].ipv6_prefix, |
8755 | sizeof(struct in6_addr)); |
8756 | |
8757 | continue; |
8758 | } else if (prefix_len != NAT64_PREFIX_LEN_32 && |
8759 | prefix_len != NAT64_PREFIX_LEN_40 && |
8760 | prefix_len != NAT64_PREFIX_LEN_48 && |
8761 | prefix_len != NAT64_PREFIX_LEN_56 && |
8762 | prefix_len != NAT64_PREFIX_LEN_64 && |
8763 | prefix_len != NAT64_PREFIX_LEN_96) { |
8764 | clat_log0((LOG_DEBUG, |
8765 | "NAT64 prefixlen is incorrect %d\n" , prefix_len)); |
8766 | error = EINVAL; |
8767 | goto out; |
8768 | } |
8769 | |
8770 | if (IN6_IS_SCOPE_EMBED(prefix)) { |
8771 | clat_log0((LOG_DEBUG, |
8772 | "NAT64 prefix has interface/link local scope.\n" )); |
8773 | error = EINVAL; |
8774 | goto out; |
8775 | } |
8776 | |
8777 | IN6_IFEXTRA(ifp)->nat64_prefixes[i].prefix_len = prefix_len; |
8778 | bcopy(prefix, &IN6_IFEXTRA(ifp)->nat64_prefixes[i].ipv6_prefix, |
8779 | sizeof(struct in6_addr)); |
8780 | clat_log0((LOG_DEBUG, |
8781 | "NAT64 prefix set to %s with prefixlen: %d\n" , |
8782 | ip6_sprintf(prefix), prefix_len)); |
8783 | one_set = 1; |
8784 | } |
8785 | |
8786 | out: |
8787 | if_inet6data_lock_done(ifp); |
8788 | |
8789 | if (error == 0 && one_set != 0) |
8790 | necp_update_all_clients(); |
8791 | |
8792 | return (error); |
8793 | } |
8794 | |
8795 | int |
8796 | ifnet_get_nat64prefix(struct ifnet *ifp, struct ipv6_prefix *prefixes) |
8797 | { |
8798 | int i, found_one = 0, error = 0; |
8799 | |
8800 | if (ifp == NULL) |
8801 | return (EINVAL); |
8802 | |
8803 | if_inet6data_lock_shared(ifp); |
8804 | |
8805 | if (IN6_IFEXTRA(ifp) == NULL) { |
8806 | error = ENOMEM; |
8807 | goto out; |
8808 | } |
8809 | |
8810 | for (i = 0; i < NAT64_MAX_NUM_PREFIXES; i++) { |
8811 | if (IN6_IFEXTRA(ifp)->nat64_prefixes[i].prefix_len != 0) |
8812 | found_one = 1; |
8813 | } |
8814 | |
8815 | if (found_one == 0) { |
8816 | error = ENOENT; |
8817 | goto out; |
8818 | } |
8819 | |
8820 | if (prefixes) |
8821 | bcopy(IN6_IFEXTRA(ifp)->nat64_prefixes, prefixes, |
8822 | sizeof(IN6_IFEXTRA(ifp)->nat64_prefixes)); |
8823 | |
8824 | out: |
8825 | if_inet6data_lock_done(ifp); |
8826 | |
8827 | return (error); |
8828 | } |
8829 | #endif |
8830 | |
8831 | static void |
8832 | dlil_output_cksum_dbg(struct ifnet *ifp, struct mbuf *m, uint32_t hoff, |
8833 | protocol_family_t pf) |
8834 | { |
8835 | #pragma unused(ifp) |
8836 | uint32_t did_sw; |
8837 | |
8838 | if (!(hwcksum_dbg_mode & HWCKSUM_DBG_FINALIZE_FORCED) || |
8839 | (m->m_pkthdr.csum_flags & (CSUM_TSO_IPV4|CSUM_TSO_IPV6))) |
8840 | return; |
8841 | |
8842 | switch (pf) { |
8843 | case PF_INET: |
8844 | did_sw = in_finalize_cksum(m, hoff, m->m_pkthdr.csum_flags); |
8845 | if (did_sw & CSUM_DELAY_IP) |
8846 | hwcksum_dbg_finalized_hdr++; |
8847 | if (did_sw & CSUM_DELAY_DATA) |
8848 | hwcksum_dbg_finalized_data++; |
8849 | break; |
8850 | #if INET6 |
8851 | case PF_INET6: |
8852 | /* |
8853 | * Checksum offload should not have been enabled when |
8854 | * extension headers exist; that also means that we |
8855 | * cannot force-finalize packets with extension headers. |
8856 | * Indicate to the callee should it skip such case by |
8857 | * setting optlen to -1. |
8858 | */ |
8859 | did_sw = in6_finalize_cksum(m, hoff, -1, -1, |
8860 | m->m_pkthdr.csum_flags); |
8861 | if (did_sw & CSUM_DELAY_IPV6_DATA) |
8862 | hwcksum_dbg_finalized_data++; |
8863 | break; |
8864 | #endif /* INET6 */ |
8865 | default: |
8866 | return; |
8867 | } |
8868 | } |
8869 | |
8870 | static void |
8871 | dlil_input_cksum_dbg(struct ifnet *ifp, struct mbuf *m, char *, |
8872 | protocol_family_t pf) |
8873 | { |
8874 | uint16_t sum = 0; |
8875 | uint32_t hlen; |
8876 | |
8877 | if (frame_header == NULL || |
8878 | frame_header < (char *)mbuf_datastart(m) || |
8879 | frame_header > (char *)m->m_data) { |
8880 | printf("%s: frame header pointer 0x%llx out of range " |
8881 | "[0x%llx,0x%llx] for mbuf 0x%llx\n" , if_name(ifp), |
8882 | (uint64_t)VM_KERNEL_ADDRPERM(frame_header), |
8883 | (uint64_t)VM_KERNEL_ADDRPERM(mbuf_datastart(m)), |
8884 | (uint64_t)VM_KERNEL_ADDRPERM(m->m_data), |
8885 | (uint64_t)VM_KERNEL_ADDRPERM(m)); |
8886 | return; |
8887 | } |
8888 | hlen = (m->m_data - frame_header); |
8889 | |
8890 | switch (pf) { |
8891 | case PF_INET: |
8892 | #if INET6 |
8893 | case PF_INET6: |
8894 | #endif /* INET6 */ |
8895 | break; |
8896 | default: |
8897 | return; |
8898 | } |
8899 | |
8900 | /* |
8901 | * Force partial checksum offload; useful to simulate cases |
8902 | * where the hardware does not support partial checksum offload, |
8903 | * in order to validate correctness throughout the layers above. |
8904 | */ |
8905 | if (hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_FORCED) { |
8906 | uint32_t foff = hwcksum_dbg_partial_rxoff_forced; |
8907 | |
8908 | if (foff > (uint32_t)m->m_pkthdr.len) |
8909 | return; |
8910 | |
8911 | m->m_pkthdr.csum_flags &= ~CSUM_RX_FLAGS; |
8912 | |
8913 | /* Compute 16-bit 1's complement sum from forced offset */ |
8914 | sum = m_sum16(m, foff, (m->m_pkthdr.len - foff)); |
8915 | |
8916 | m->m_pkthdr.csum_flags |= (CSUM_DATA_VALID | CSUM_PARTIAL); |
8917 | m->m_pkthdr.csum_rx_val = sum; |
8918 | m->m_pkthdr.csum_rx_start = (foff + hlen); |
8919 | |
8920 | hwcksum_dbg_partial_forced++; |
8921 | hwcksum_dbg_partial_forced_bytes += m->m_pkthdr.len; |
8922 | } |
8923 | |
8924 | /* |
8925 | * Partial checksum offload verification (and adjustment); |
8926 | * useful to validate and test cases where the hardware |
8927 | * supports partial checksum offload. |
8928 | */ |
8929 | if ((m->m_pkthdr.csum_flags & |
8930 | (CSUM_DATA_VALID | CSUM_PARTIAL | CSUM_PSEUDO_HDR)) == |
8931 | (CSUM_DATA_VALID | CSUM_PARTIAL)) { |
8932 | uint32_t rxoff; |
8933 | |
8934 | /* Start offset must begin after frame header */ |
8935 | rxoff = m->m_pkthdr.csum_rx_start; |
8936 | if (hlen > rxoff) { |
8937 | hwcksum_dbg_bad_rxoff++; |
8938 | if (dlil_verbose) { |
8939 | printf("%s: partial cksum start offset %d " |
8940 | "is less than frame header length %d for " |
8941 | "mbuf 0x%llx\n" , if_name(ifp), rxoff, hlen, |
8942 | (uint64_t)VM_KERNEL_ADDRPERM(m)); |
8943 | } |
8944 | return; |
8945 | } |
8946 | rxoff -= hlen; |
8947 | |
8948 | if (!(hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_FORCED)) { |
8949 | /* |
8950 | * Compute the expected 16-bit 1's complement sum; |
8951 | * skip this if we've already computed it above |
8952 | * when partial checksum offload is forced. |
8953 | */ |
8954 | sum = m_sum16(m, rxoff, (m->m_pkthdr.len - rxoff)); |
8955 | |
8956 | /* Hardware or driver is buggy */ |
8957 | if (sum != m->m_pkthdr.csum_rx_val) { |
8958 | hwcksum_dbg_bad_cksum++; |
8959 | if (dlil_verbose) { |
8960 | printf("%s: bad partial cksum value " |
8961 | "0x%x (expected 0x%x) for mbuf " |
8962 | "0x%llx [rx_start %d]\n" , |
8963 | if_name(ifp), |
8964 | m->m_pkthdr.csum_rx_val, sum, |
8965 | (uint64_t)VM_KERNEL_ADDRPERM(m), |
8966 | m->m_pkthdr.csum_rx_start); |
8967 | } |
8968 | return; |
8969 | } |
8970 | } |
8971 | hwcksum_dbg_verified++; |
8972 | |
8973 | /* |
8974 | * This code allows us to emulate various hardwares that |
8975 | * perform 16-bit 1's complement sum beginning at various |
8976 | * start offset values. |
8977 | */ |
8978 | if (hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_RXOFF_ADJ) { |
8979 | uint32_t aoff = hwcksum_dbg_partial_rxoff_adj; |
8980 | |
8981 | if (aoff == rxoff || aoff > (uint32_t)m->m_pkthdr.len) |
8982 | return; |
8983 | |
8984 | sum = m_adj_sum16(m, rxoff, aoff, |
8985 | m_pktlen(m) - aoff, sum); |
8986 | |
8987 | m->m_pkthdr.csum_rx_val = sum; |
8988 | m->m_pkthdr.csum_rx_start = (aoff + hlen); |
8989 | |
8990 | hwcksum_dbg_adjusted++; |
8991 | } |
8992 | } |
8993 | } |
8994 | |
8995 | static int |
8996 | sysctl_hwcksum_dbg_mode SYSCTL_HANDLER_ARGS |
8997 | { |
8998 | #pragma unused(arg1, arg2) |
8999 | u_int32_t i; |
9000 | int err; |
9001 | |
9002 | i = hwcksum_dbg_mode; |
9003 | |
9004 | err = sysctl_handle_int(oidp, &i, 0, req); |
9005 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
9006 | return (err); |
9007 | |
9008 | if (hwcksum_dbg == 0) |
9009 | return (ENODEV); |
9010 | |
9011 | if ((i & ~HWCKSUM_DBG_MASK) != 0) |
9012 | return (EINVAL); |
9013 | |
9014 | hwcksum_dbg_mode = (i & HWCKSUM_DBG_MASK); |
9015 | |
9016 | return (err); |
9017 | } |
9018 | |
9019 | static int |
9020 | sysctl_hwcksum_dbg_partial_rxoff_forced SYSCTL_HANDLER_ARGS |
9021 | { |
9022 | #pragma unused(arg1, arg2) |
9023 | u_int32_t i; |
9024 | int err; |
9025 | |
9026 | i = hwcksum_dbg_partial_rxoff_forced; |
9027 | |
9028 | err = sysctl_handle_int(oidp, &i, 0, req); |
9029 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
9030 | return (err); |
9031 | |
9032 | if (!(hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_FORCED)) |
9033 | return (ENODEV); |
9034 | |
9035 | hwcksum_dbg_partial_rxoff_forced = i; |
9036 | |
9037 | return (err); |
9038 | } |
9039 | |
9040 | static int |
9041 | sysctl_hwcksum_dbg_partial_rxoff_adj SYSCTL_HANDLER_ARGS |
9042 | { |
9043 | #pragma unused(arg1, arg2) |
9044 | u_int32_t i; |
9045 | int err; |
9046 | |
9047 | i = hwcksum_dbg_partial_rxoff_adj; |
9048 | |
9049 | err = sysctl_handle_int(oidp, &i, 0, req); |
9050 | if (err != 0 || req->newptr == USER_ADDR_NULL) |
9051 | return (err); |
9052 | |
9053 | if (!(hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_RXOFF_ADJ)) |
9054 | return (ENODEV); |
9055 | |
9056 | hwcksum_dbg_partial_rxoff_adj = i; |
9057 | |
9058 | return (err); |
9059 | } |
9060 | |
9061 | static int |
9062 | sysctl_tx_chain_len_stats SYSCTL_HANDLER_ARGS |
9063 | { |
9064 | #pragma unused(oidp, arg1, arg2) |
9065 | int err; |
9066 | |
9067 | if (req->oldptr == USER_ADDR_NULL) { |
9068 | |
9069 | } |
9070 | if (req->newptr != USER_ADDR_NULL) { |
9071 | return (EPERM); |
9072 | } |
9073 | err = SYSCTL_OUT(req, &tx_chain_len_stats, |
9074 | sizeof(struct chain_len_stats)); |
9075 | |
9076 | return (err); |
9077 | } |
9078 | |
9079 | |
9080 | #if DEBUG || DEVELOPMENT |
9081 | /* Blob for sum16 verification */ |
9082 | static uint8_t sumdata[] = { |
9083 | 0x1f, 0x8b, 0x08, 0x08, 0x4c, 0xe5, 0x9a, 0x4f, 0x00, 0x03, |
9084 | 0x5f, 0x00, 0x5d, 0x91, 0x41, 0x4e, 0xc4, 0x30, 0x0c, 0x45, |
9085 | 0xf7, 0x9c, 0xc2, 0x07, 0x18, 0xf5, 0x0e, 0xb0, 0xe2, 0x00, |
9086 | 0x48, 0x88, 0xa5, 0xdb, 0xba, 0x49, 0x34, 0x69, 0xdc, 0x71, |
9087 | 0x92, 0xa9, 0xc2, 0x8a, 0x6b, 0x70, 0x3d, 0x4e, 0x82, 0x93, |
9088 | 0xb4, 0x08, 0xd8, 0xc5, 0xb1, 0xfd, 0xff, 0xb3, 0xfd, 0x4c, |
9089 | 0x42, 0x5f, 0x1f, 0x9f, 0x11, 0x12, 0x43, 0xb2, 0x04, 0x93, |
9090 | 0xe0, 0x7b, 0x01, 0x0e, 0x14, 0x07, 0x78, 0xd1, 0x78, 0x75, |
9091 | 0x71, 0x71, 0xe9, 0x08, 0x84, 0x46, 0xf2, 0xc7, 0x3b, 0x09, |
9092 | 0xe7, 0xd1, 0xd3, 0x8a, 0x57, 0x92, 0x33, 0xcd, 0x39, 0xcc, |
9093 | 0xb0, 0x91, 0x89, 0xe0, 0x42, 0x53, 0x8b, 0xb7, 0x8c, 0x42, |
9094 | 0x60, 0xd9, 0x9f, 0x7a, 0x55, 0x19, 0x76, 0xcb, 0x10, 0x49, |
9095 | 0x35, 0xac, 0x0b, 0x5a, 0x3c, 0xbb, 0x65, 0x51, 0x8c, 0x90, |
9096 | 0x7c, 0x69, 0x45, 0x45, 0x81, 0xb4, 0x2b, 0x70, 0x82, 0x85, |
9097 | 0x55, 0x91, 0x17, 0x90, 0xdc, 0x14, 0x1e, 0x35, 0x52, 0xdd, |
9098 | 0x02, 0x16, 0xef, 0xb5, 0x40, 0x89, 0xe2, 0x46, 0x53, 0xad, |
9099 | 0x93, 0x6e, 0x98, 0x30, 0xe5, 0x08, 0xb7, 0xcc, 0x03, 0xbc, |
9100 | 0x71, 0x86, 0x09, 0x43, 0x0d, 0x52, 0xf5, 0xa2, 0xf5, 0xa2, |
9101 | 0x56, 0x11, 0x8d, 0xa8, 0xf5, 0xee, 0x92, 0x3d, 0xfe, 0x8c, |
9102 | 0x67, 0x71, 0x8b, 0x0e, 0x2d, 0x70, 0x77, 0xbe, 0xbe, 0xea, |
9103 | 0xbf, 0x9a, 0x8d, 0x9c, 0x53, 0x53, 0xe5, 0xe0, 0x4b, 0x87, |
9104 | 0x85, 0xd2, 0x45, 0x95, 0x30, 0xc1, 0xcc, 0xe0, 0x74, 0x54, |
9105 | 0x13, 0x58, 0xe8, 0xe8, 0x79, 0xa2, 0x09, 0x73, 0xa4, 0x0e, |
9106 | 0x39, 0x59, 0x0c, 0xe6, 0x9c, 0xb2, 0x4f, 0x06, 0x5b, 0x8e, |
9107 | 0xcd, 0x17, 0x6c, 0x5e, 0x95, 0x4d, 0x70, 0xa2, 0x0a, 0xbf, |
9108 | 0xa3, 0xcc, 0x03, 0xbc, 0x5a, 0xe7, 0x75, 0x06, 0x5e, 0x75, |
9109 | 0xef, 0x58, 0x8e, 0x15, 0xd1, 0x0a, 0x18, 0xff, 0xdd, 0xe6, |
9110 | 0x02, 0x3b, 0xb5, 0xb4, 0xa1, 0xe0, 0x72, 0xfc, 0xe3, 0xab, |
9111 | 0x07, 0xe0, 0x4d, 0x65, 0xea, 0x92, 0xeb, 0xf2, 0x7b, 0x17, |
9112 | 0x05, 0xce, 0xc6, 0xf6, 0x2b, 0xbb, 0x70, 0x3d, 0x00, 0x95, |
9113 | 0xe0, 0x07, 0x52, 0x3b, 0x58, 0xfc, 0x7c, 0x69, 0x4d, 0xe9, |
9114 | 0xf7, 0xa9, 0x66, 0x1e, 0x1e, 0xbe, 0x01, 0x69, 0x98, 0xfe, |
9115 | 0xc8, 0x28, 0x02, 0x00, 0x00 |
9116 | }; |
9117 | |
9118 | /* Precomputed 16-bit 1's complement sums for various spans of the above data */ |
9119 | static struct { |
9120 | boolean_t init; |
9121 | uint16_t len; |
9122 | uint16_t sumr; /* reference */ |
9123 | uint16_t sumrp; /* reference, precomputed */ |
9124 | } sumtbl[] = { |
9125 | { FALSE, 0, 0, 0x0000 }, |
9126 | { FALSE, 1, 0, 0x001f }, |
9127 | { FALSE, 2, 0, 0x8b1f }, |
9128 | { FALSE, 3, 0, 0x8b27 }, |
9129 | { FALSE, 7, 0, 0x790e }, |
9130 | { FALSE, 11, 0, 0xcb6d }, |
9131 | { FALSE, 20, 0, 0x20dd }, |
9132 | { FALSE, 27, 0, 0xbabd }, |
9133 | { FALSE, 32, 0, 0xf3e8 }, |
9134 | { FALSE, 37, 0, 0x197d }, |
9135 | { FALSE, 43, 0, 0x9eae }, |
9136 | { FALSE, 64, 0, 0x4678 }, |
9137 | { FALSE, 127, 0, 0x9399 }, |
9138 | { FALSE, 256, 0, 0xd147 }, |
9139 | { FALSE, 325, 0, 0x0358 }, |
9140 | }; |
9141 | #define SUMTBL_MAX ((int)sizeof (sumtbl) / (int)sizeof (sumtbl[0])) |
9142 | |
9143 | static void |
9144 | dlil_verify_sum16(void) |
9145 | { |
9146 | struct mbuf *m; |
9147 | uint8_t *buf; |
9148 | int n; |
9149 | |
9150 | /* Make sure test data plus extra room for alignment fits in cluster */ |
9151 | _CASSERT((sizeof (sumdata) + (sizeof (uint64_t) * 2)) <= MCLBYTES); |
9152 | |
9153 | kprintf("DLIL: running SUM16 self-tests ... " ); |
9154 | |
9155 | m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); |
9156 | m_align(m, sizeof(sumdata) + (sizeof (uint64_t) * 2)); |
9157 | |
9158 | buf = mtod(m, uint8_t *); /* base address */ |
9159 | |
9160 | for (n = 0; n < SUMTBL_MAX; n++) { |
9161 | uint16_t len = sumtbl[n].len; |
9162 | int i; |
9163 | |
9164 | /* Verify for all possible alignments */ |
9165 | for (i = 0; i < (int)sizeof (uint64_t); i++) { |
9166 | uint16_t sum, sumr; |
9167 | uint8_t *c; |
9168 | |
9169 | /* Copy over test data to mbuf */ |
9170 | VERIFY(len <= sizeof (sumdata)); |
9171 | c = buf + i; |
9172 | bcopy(sumdata, c, len); |
9173 | |
9174 | /* Zero-offset test (align by data pointer) */ |
9175 | m->m_data = (caddr_t)c; |
9176 | m->m_len = len; |
9177 | sum = m_sum16(m, 0, len); |
9178 | |
9179 | if (!sumtbl[n].init) { |
9180 | sumr = in_cksum_mbuf_ref(m, len, 0, 0); |
9181 | sumtbl[n].sumr = sumr; |
9182 | sumtbl[n].init = TRUE; |
9183 | } else { |
9184 | sumr = sumtbl[n].sumr; |
9185 | } |
9186 | |
9187 | /* Something is horribly broken; stop now */ |
9188 | if (sumr != sumtbl[n].sumrp) { |
9189 | panic_plain("\n%s: broken in_cksum_mbuf_ref() " |
9190 | "for len=%d align=%d sum=0x%04x " |
9191 | "[expected=0x%04x]\n" , __func__, |
9192 | len, i, sum, sumr); |
9193 | /* NOTREACHED */ |
9194 | } else if (sum != sumr) { |
9195 | panic_plain("\n%s: broken m_sum16() for len=%d " |
9196 | "align=%d sum=0x%04x [expected=0x%04x]\n" , |
9197 | __func__, len, i, sum, sumr); |
9198 | /* NOTREACHED */ |
9199 | } |
9200 | |
9201 | /* Alignment test by offset (fixed data pointer) */ |
9202 | m->m_data = (caddr_t)buf; |
9203 | m->m_len = i + len; |
9204 | sum = m_sum16(m, i, len); |
9205 | |
9206 | /* Something is horribly broken; stop now */ |
9207 | if (sum != sumr) { |
9208 | panic_plain("\n%s: broken m_sum16() for len=%d " |
9209 | "offset=%d sum=0x%04x [expected=0x%04x]\n" , |
9210 | __func__, len, i, sum, sumr); |
9211 | /* NOTREACHED */ |
9212 | } |
9213 | #if INET |
9214 | /* Simple sum16 contiguous buffer test by aligment */ |
9215 | sum = b_sum16(c, len); |
9216 | |
9217 | /* Something is horribly broken; stop now */ |
9218 | if (sum != sumr) { |
9219 | panic_plain("\n%s: broken b_sum16() for len=%d " |
9220 | "align=%d sum=0x%04x [expected=0x%04x]\n" , |
9221 | __func__, len, i, sum, sumr); |
9222 | /* NOTREACHED */ |
9223 | } |
9224 | #endif /* INET */ |
9225 | } |
9226 | } |
9227 | m_freem(m); |
9228 | |
9229 | kprintf("PASSED\n" ); |
9230 | } |
9231 | #endif /* DEBUG || DEVELOPMENT */ |
9232 | |
9233 | #define CASE_STRINGIFY(x) case x: return #x |
9234 | |
9235 | __private_extern__ const char * |
9236 | dlil_kev_dl_code_str(u_int32_t event_code) |
9237 | { |
9238 | switch (event_code) { |
9239 | CASE_STRINGIFY(KEV_DL_SIFFLAGS); |
9240 | CASE_STRINGIFY(KEV_DL_SIFMETRICS); |
9241 | CASE_STRINGIFY(KEV_DL_SIFMTU); |
9242 | CASE_STRINGIFY(KEV_DL_SIFPHYS); |
9243 | CASE_STRINGIFY(KEV_DL_SIFMEDIA); |
9244 | CASE_STRINGIFY(KEV_DL_SIFGENERIC); |
9245 | CASE_STRINGIFY(KEV_DL_ADDMULTI); |
9246 | CASE_STRINGIFY(KEV_DL_DELMULTI); |
9247 | CASE_STRINGIFY(KEV_DL_IF_ATTACHED); |
9248 | CASE_STRINGIFY(KEV_DL_IF_DETACHING); |
9249 | CASE_STRINGIFY(KEV_DL_IF_DETACHED); |
9250 | CASE_STRINGIFY(KEV_DL_LINK_OFF); |
9251 | CASE_STRINGIFY(KEV_DL_LINK_ON); |
9252 | CASE_STRINGIFY(KEV_DL_PROTO_ATTACHED); |
9253 | CASE_STRINGIFY(KEV_DL_PROTO_DETACHED); |
9254 | CASE_STRINGIFY(KEV_DL_LINK_ADDRESS_CHANGED); |
9255 | CASE_STRINGIFY(KEV_DL_WAKEFLAGS_CHANGED); |
9256 | CASE_STRINGIFY(KEV_DL_IF_IDLE_ROUTE_REFCNT); |
9257 | CASE_STRINGIFY(KEV_DL_IFCAP_CHANGED); |
9258 | CASE_STRINGIFY(KEV_DL_LINK_QUALITY_METRIC_CHANGED); |
9259 | CASE_STRINGIFY(KEV_DL_NODE_PRESENCE); |
9260 | CASE_STRINGIFY(KEV_DL_NODE_ABSENCE); |
9261 | CASE_STRINGIFY(KEV_DL_MASTER_ELECTED); |
9262 | CASE_STRINGIFY(KEV_DL_ISSUES); |
9263 | CASE_STRINGIFY(KEV_DL_IFDELEGATE_CHANGED); |
9264 | default: |
9265 | break; |
9266 | } |
9267 | return ("" ); |
9268 | } |
9269 | |
9270 | static void |
9271 | dlil_dt_tcall_fn(thread_call_param_t arg0, thread_call_param_t arg1) |
9272 | { |
9273 | #pragma unused(arg1) |
9274 | struct ifnet *ifp = arg0; |
9275 | |
9276 | if (ifnet_is_attached(ifp, 1)) { |
9277 | nstat_ifnet_threshold_reached(ifp->if_index); |
9278 | ifnet_decr_iorefcnt(ifp); |
9279 | } |
9280 | } |
9281 | |
9282 | void |
9283 | ifnet_notify_data_threshold(struct ifnet *ifp) |
9284 | { |
9285 | uint64_t bytes = (ifp->if_ibytes + ifp->if_obytes); |
9286 | uint64_t oldbytes = ifp->if_dt_bytes; |
9287 | |
9288 | ASSERT(ifp->if_dt_tcall != NULL); |
9289 | |
9290 | /* |
9291 | * If we went over the threshold, notify NetworkStatistics. |
9292 | * We rate-limit it based on the threshold interval value. |
9293 | */ |
9294 | if (threshold_notify && (bytes - oldbytes) > ifp->if_data_threshold && |
9295 | OSCompareAndSwap64(oldbytes, bytes, &ifp->if_dt_bytes) && |
9296 | !thread_call_isactive(ifp->if_dt_tcall)) { |
9297 | uint64_t tival = (threshold_interval * NSEC_PER_SEC); |
9298 | uint64_t now = mach_absolute_time(), deadline = now; |
9299 | uint64_t ival; |
9300 | |
9301 | if (tival != 0) { |
9302 | nanoseconds_to_absolutetime(tival, &ival); |
9303 | clock_deadline_for_periodic_event(ival, now, &deadline); |
9304 | (void) thread_call_enter_delayed(ifp->if_dt_tcall, |
9305 | deadline); |
9306 | } else { |
9307 | (void) thread_call_enter(ifp->if_dt_tcall); |
9308 | } |
9309 | } |
9310 | } |
9311 | |
9312 | #if (DEVELOPMENT || DEBUG) |
9313 | /* |
9314 | * The sysctl variable name contains the input parameters of |
9315 | * ifnet_get_keepalive_offload_frames() |
9316 | * ifp (interface index): name[0] |
9317 | * frames_array_count: name[1] |
9318 | * frame_data_offset: name[2] |
9319 | * The return length gives used_frames_count |
9320 | */ |
9321 | static int |
9322 | sysctl_get_kao_frames SYSCTL_HANDLER_ARGS |
9323 | { |
9324 | #pragma unused(oidp) |
9325 | int *name = (int *)arg1; |
9326 | u_int namelen = arg2; |
9327 | int idx; |
9328 | ifnet_t ifp = NULL; |
9329 | u_int32_t frames_array_count; |
9330 | size_t frame_data_offset; |
9331 | u_int32_t used_frames_count; |
9332 | struct ifnet_keepalive_offload_frame *frames_array = NULL; |
9333 | int error = 0; |
9334 | u_int32_t i; |
9335 | |
9336 | /* |
9337 | * Only root can get look at other people TCP frames |
9338 | */ |
9339 | error = proc_suser(current_proc()); |
9340 | if (error != 0) |
9341 | goto done; |
9342 | /* |
9343 | * Validate the input parameters |
9344 | */ |
9345 | if (req->newptr != USER_ADDR_NULL) { |
9346 | error = EPERM; |
9347 | goto done; |
9348 | } |
9349 | if (namelen != 3) { |
9350 | error = EINVAL; |
9351 | goto done; |
9352 | } |
9353 | if (req->oldptr == USER_ADDR_NULL) { |
9354 | error = EINVAL; |
9355 | goto done; |
9356 | } |
9357 | if (req->oldlen == 0) { |
9358 | error = EINVAL; |
9359 | goto done; |
9360 | } |
9361 | idx = name[0]; |
9362 | frames_array_count = name[1]; |
9363 | frame_data_offset = name[2]; |
9364 | |
9365 | /* Make sure the passed buffer is large enough */ |
9366 | if (frames_array_count * sizeof(struct ifnet_keepalive_offload_frame) > |
9367 | req->oldlen) { |
9368 | error = ENOMEM; |
9369 | goto done; |
9370 | } |
9371 | |
9372 | ifnet_head_lock_shared(); |
9373 | if (!IF_INDEX_IN_RANGE(idx)) { |
9374 | ifnet_head_done(); |
9375 | error = ENOENT; |
9376 | goto done; |
9377 | } |
9378 | ifp = ifindex2ifnet[idx]; |
9379 | ifnet_head_done(); |
9380 | |
9381 | frames_array = _MALLOC(frames_array_count * |
9382 | sizeof(struct ifnet_keepalive_offload_frame), M_TEMP, M_WAITOK); |
9383 | if (frames_array == NULL) { |
9384 | error = ENOMEM; |
9385 | goto done; |
9386 | } |
9387 | |
9388 | error = ifnet_get_keepalive_offload_frames(ifp, frames_array, |
9389 | frames_array_count, frame_data_offset, &used_frames_count); |
9390 | if (error != 0) { |
9391 | printf("%s: ifnet_get_keepalive_offload_frames error %d\n" , |
9392 | __func__, error); |
9393 | goto done; |
9394 | } |
9395 | |
9396 | for (i = 0; i < used_frames_count; i++) { |
9397 | error = SYSCTL_OUT(req, frames_array + i, |
9398 | sizeof(struct ifnet_keepalive_offload_frame)); |
9399 | if (error != 0) { |
9400 | goto done; |
9401 | } |
9402 | } |
9403 | done: |
9404 | if (frames_array != NULL) |
9405 | _FREE(frames_array, M_TEMP); |
9406 | return (error); |
9407 | } |
9408 | #endif /* DEVELOPMENT || DEBUG */ |
9409 | |
9410 | void |
9411 | ifnet_update_stats_per_flow(struct ifnet_stats_per_flow *ifs, |
9412 | struct ifnet *ifp) |
9413 | { |
9414 | tcp_update_stats_per_flow(ifs, ifp); |
9415 | } |
9416 | |
9417 | static void |
9418 | dlil_mit_tcall_fn(thread_call_param_t arg0, thread_call_param_t arg1) |
9419 | { |
9420 | #pragma unused(arg1) |
9421 | struct ifnet *ifp = (struct ifnet *)arg0; |
9422 | struct dlil_threading_info *inp = ifp->if_inp; |
9423 | |
9424 | ifnet_lock_shared(ifp); |
9425 | if (!IF_FULLY_ATTACHED(ifp) || inp == NULL) { |
9426 | ifnet_lock_done(ifp); |
9427 | return; |
9428 | } |
9429 | |
9430 | lck_mtx_lock_spin(&inp->input_lck); |
9431 | inp->input_waiting |= DLIL_INPUT_WAITING; |
9432 | if (!(inp->input_waiting & DLIL_INPUT_RUNNING) || |
9433 | !qempty(&inp->rcvq_pkts)) { |
9434 | inp->wtot++; |
9435 | wakeup_one((caddr_t)&inp->input_waiting); |
9436 | } |
9437 | lck_mtx_unlock(&inp->input_lck); |
9438 | ifnet_lock_done(ifp); |
9439 | } |
9440 | |