1 | /* |
2 | * Copyright (c) 2004-2024 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 | /* $NetBSD: if_bridge.c,v 1.31 2005/06/01 19:45:34 jdc Exp $ */ |
30 | /* |
31 | * Copyright 2001 Wasabi Systems, Inc. |
32 | * All rights reserved. |
33 | * |
34 | * Written by Jason R. Thorpe for Wasabi Systems, Inc. |
35 | * |
36 | * Redistribution and use in source and binary forms, with or without |
37 | * modification, are permitted provided that the following conditions |
38 | * are met: |
39 | * 1. Redistributions of source code must retain the above copyright |
40 | * notice, this list of conditions and the following disclaimer. |
41 | * 2. Redistributions in binary form must reproduce the above copyright |
42 | * notice, this list of conditions and the following disclaimer in the |
43 | * documentation and/or other materials provided with the distribution. |
44 | * 3. All advertising materials mentioning features or use of this software |
45 | * must display the following acknowledgement: |
46 | * This product includes software developed for the NetBSD Project by |
47 | * Wasabi Systems, Inc. |
48 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
49 | * or promote products derived from this software without specific prior |
50 | * written permission. |
51 | * |
52 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
53 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
54 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
55 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
56 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
57 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
58 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
59 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
60 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
61 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
62 | * POSSIBILITY OF SUCH DAMAGE. |
63 | */ |
64 | |
65 | /* |
66 | * Copyright (c) 1999, 2000 Jason L. Wright (jason@thought.net) |
67 | * All rights reserved. |
68 | * |
69 | * Redistribution and use in source and binary forms, with or without |
70 | * modification, are permitted provided that the following conditions |
71 | * are met: |
72 | * 1. Redistributions of source code must retain the above copyright |
73 | * notice, this list of conditions and the following disclaimer. |
74 | * 2. Redistributions in binary form must reproduce the above copyright |
75 | * notice, this list of conditions and the following disclaimer in the |
76 | * documentation and/or other materials provided with the distribution. |
77 | * |
78 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
79 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
80 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
81 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
82 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
83 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
84 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
85 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
86 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
87 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
88 | * POSSIBILITY OF SUCH DAMAGE. |
89 | * |
90 | * OpenBSD: if_bridge.c,v 1.60 2001/06/15 03:38:33 itojun Exp |
91 | */ |
92 | |
93 | /* |
94 | * Network interface bridge support. |
95 | * |
96 | * TODO: |
97 | * |
98 | * - Currently only supports Ethernet-like interfaces (Ethernet, |
99 | * 802.11, VLANs on Ethernet, etc.) Figure out a nice way |
100 | * to bridge other types of interfaces (FDDI-FDDI, and maybe |
101 | * consider heterogenous bridges). |
102 | * |
103 | * - GIF isn't handled due to the lack of IPPROTO_ETHERIP support. |
104 | */ |
105 | |
106 | #include <sys/cdefs.h> |
107 | |
108 | #include <sys/param.h> |
109 | #include <sys/mbuf.h> |
110 | #include <sys/malloc.h> |
111 | #include <sys/protosw.h> |
112 | #include <sys/systm.h> |
113 | #include <sys/time.h> |
114 | #include <sys/socket.h> /* for net/if.h */ |
115 | #include <sys/sockio.h> |
116 | #include <sys/kernel.h> |
117 | #include <sys/random.h> |
118 | #include <sys/syslog.h> |
119 | #include <sys/sysctl.h> |
120 | #include <sys/proc.h> |
121 | #include <sys/lock.h> |
122 | #include <sys/mcache.h> |
123 | |
124 | #include <sys/kauth.h> |
125 | |
126 | #include <kern/thread_call.h> |
127 | |
128 | #include <libkern/libkern.h> |
129 | |
130 | #include <kern/zalloc.h> |
131 | |
132 | #if NBPFILTER > 0 |
133 | #include <net/bpf.h> |
134 | #endif |
135 | #include <net/if.h> |
136 | #include <net/if_dl.h> |
137 | #include <net/if_types.h> |
138 | #include <net/if_var.h> |
139 | #include <net/if_media.h> |
140 | #include <net/net_api_stats.h> |
141 | #include <net/pfvar.h> |
142 | |
143 | #include <netinet/in.h> /* for struct arpcom */ |
144 | #include <netinet/tcp.h> /* for struct tcphdr */ |
145 | #include <netinet/in_systm.h> |
146 | #include <netinet/in_var.h> |
147 | #define _IP_VHL |
148 | #include <netinet/ip.h> |
149 | #include <netinet/ip_var.h> |
150 | #include <netinet/ip6.h> |
151 | #include <netinet6/ip6_var.h> |
152 | #ifdef DEV_CARP |
153 | #include <netinet/ip_carp.h> |
154 | #endif |
155 | #include <netinet/if_ether.h> /* for struct arpcom */ |
156 | #include <net/bridgestp.h> |
157 | #include <net/if_bridgevar.h> |
158 | #include <net/if_llc.h> |
159 | #if NVLAN > 0 |
160 | #include <net/if_vlan_var.h> |
161 | #endif /* NVLAN > 0 */ |
162 | |
163 | #include <net/if_ether.h> |
164 | #include <net/dlil.h> |
165 | #include <net/kpi_interfacefilter.h> |
166 | |
167 | #include <net/route.h> |
168 | #include <dev/random/randomdev.h> |
169 | |
170 | #include <netinet/bootp.h> |
171 | #include <netinet/dhcp.h> |
172 | |
173 | #if SKYWALK |
174 | #include <skywalk/nexus/netif/nx_netif.h> |
175 | #endif /* SKYWALK */ |
176 | |
177 | #include <net/sockaddr_utils.h> |
178 | |
179 | #include <os/log.h> |
180 | |
181 | /* |
182 | * if_bridge_debug, BR_DBGF_* |
183 | * - 'if_bridge_debug' is a bitmask of BR_DBGF_* flags that can be set |
184 | * to enable additional logs for the corresponding bridge function |
185 | * - "sysctl net.link.bridge.debug" controls the value of |
186 | * 'if_bridge_debug' |
187 | */ |
188 | static uint32_t if_bridge_debug = 0; |
189 | #define BR_DBGF_LIFECYCLE 0x0001 |
190 | #define BR_DBGF_INPUT 0x0002 |
191 | #define BR_DBGF_OUTPUT 0x0004 |
192 | #define BR_DBGF_RT_TABLE 0x0008 |
193 | #define BR_DBGF_DELAYED_CALL 0x0010 |
194 | #define BR_DBGF_IOCTL 0x0020 |
195 | #define BR_DBGF_MBUF 0x0040 |
196 | #define BR_DBGF_MCAST 0x0080 |
197 | #define BR_DBGF_HOSTFILTER 0x0100 |
198 | #define BR_DBGF_CHECKSUM 0x0200 |
199 | #define BR_DBGF_MAC_NAT 0x0400 |
200 | |
201 | /* |
202 | * if_bridge_log_level |
203 | * - 'if_bridge_log_level' ensures that by default important logs are |
204 | * logged regardless of if_bridge_debug by comparing the log level |
205 | * in BRIDGE_LOG to if_bridge_log_level |
206 | * - use "sysctl net.link.bridge.log_level" controls the value of |
207 | * 'if_bridge_log_level' |
208 | * - the default value of 'if_bridge_log_level' is LOG_NOTICE; important |
209 | * logs must use LOG_NOTICE to ensure they appear by default |
210 | */ |
211 | static int if_bridge_log_level = LOG_NOTICE; |
212 | |
213 | #define BRIDGE_DBGF_ENABLED(__flag) ((if_bridge_debug & __flag) != 0) |
214 | |
215 | /* |
216 | * BRIDGE_LOG, BRIDGE_LOG_SIMPLE |
217 | * - macros to generate the specified log conditionally based on |
218 | * the specified log level and debug flags |
219 | * - BRIDGE_LOG_SIMPLE does not include the function name in the log |
220 | */ |
221 | #define BRIDGE_LOG(__level, __dbgf, __string, ...) \ |
222 | do { \ |
223 | if (__level <= if_bridge_log_level || \ |
224 | BRIDGE_DBGF_ENABLED(__dbgf)) { \ |
225 | os_log(OS_LOG_DEFAULT, "%s: " __string, \ |
226 | __func__, ## __VA_ARGS__); \ |
227 | } \ |
228 | } while (0) |
229 | #define BRIDGE_LOG_SIMPLE(__level, __dbgf, __string, ...) \ |
230 | do { \ |
231 | if (__level <= if_bridge_log_level || \ |
232 | BRIDGE_DBGF_ENABLED(__dbgf)) { \ |
233 | os_log(OS_LOG_DEFAULT, __string, ## __VA_ARGS__); \ |
234 | } \ |
235 | } while (0) |
236 | |
237 | #define _BRIDGE_LOCK(_sc) lck_mtx_lock(&(_sc)->sc_mtx) |
238 | #define _BRIDGE_UNLOCK(_sc) lck_mtx_unlock(&(_sc)->sc_mtx) |
239 | #define BRIDGE_LOCK_ASSERT_HELD(_sc) \ |
240 | LCK_MTX_ASSERT(&(_sc)->sc_mtx, LCK_MTX_ASSERT_OWNED) |
241 | #define BRIDGE_LOCK_ASSERT_NOTHELD(_sc) \ |
242 | LCK_MTX_ASSERT(&(_sc)->sc_mtx, LCK_MTX_ASSERT_NOTOWNED) |
243 | |
244 | #define BRIDGE_LOCK_DEBUG 1 |
245 | #if BRIDGE_LOCK_DEBUG |
246 | |
247 | #define BR_LCKDBG_MAX 4 |
248 | |
249 | #define BRIDGE_LOCK(_sc) bridge_lock(_sc) |
250 | #define BRIDGE_UNLOCK(_sc) bridge_unlock(_sc) |
251 | #define BRIDGE_LOCK2REF(_sc, _err) _err = bridge_lock2ref(_sc) |
252 | #define BRIDGE_UNREF(_sc) bridge_unref(_sc) |
253 | #define BRIDGE_XLOCK(_sc) bridge_xlock(_sc) |
254 | #define BRIDGE_XDROP(_sc) bridge_xdrop(_sc) |
255 | |
256 | #else /* !BRIDGE_LOCK_DEBUG */ |
257 | |
258 | #define BRIDGE_LOCK(_sc) _BRIDGE_LOCK(_sc) |
259 | #define BRIDGE_UNLOCK(_sc) _BRIDGE_UNLOCK(_sc) |
260 | #define BRIDGE_LOCK2REF(_sc, _err) do { \ |
261 | BRIDGE_LOCK_ASSERT_HELD(_sc); \ |
262 | if ((_sc)->sc_iflist_xcnt > 0) \ |
263 | (_err) = EBUSY; \ |
264 | else { \ |
265 | (_sc)->sc_iflist_ref++; \ |
266 | (_err) = 0; \ |
267 | } \ |
268 | _BRIDGE_UNLOCK(_sc); \ |
269 | } while (0) |
270 | #define BRIDGE_UNREF(_sc) do { \ |
271 | _BRIDGE_LOCK(_sc); \ |
272 | (_sc)->sc_iflist_ref--; \ |
273 | if (((_sc)->sc_iflist_xcnt > 0) && ((_sc)->sc_iflist_ref == 0)) { \ |
274 | _BRIDGE_UNLOCK(_sc); \ |
275 | wakeup(&(_sc)->sc_cv); \ |
276 | } else \ |
277 | _BRIDGE_UNLOCK(_sc); \ |
278 | } while (0) |
279 | #define BRIDGE_XLOCK(_sc) do { \ |
280 | BRIDGE_LOCK_ASSERT_HELD(_sc); \ |
281 | (_sc)->sc_iflist_xcnt++; \ |
282 | while ((_sc)->sc_iflist_ref > 0) \ |
283 | msleep(&(_sc)->sc_cv, &(_sc)->sc_mtx, PZERO, \ |
284 | "BRIDGE_XLOCK", NULL); \ |
285 | } while (0) |
286 | #define BRIDGE_XDROP(_sc) do { \ |
287 | BRIDGE_LOCK_ASSERT_HELD(_sc); \ |
288 | (_sc)->sc_iflist_xcnt--; \ |
289 | } while (0) |
290 | |
291 | #endif /* BRIDGE_LOCK_DEBUG */ |
292 | |
293 | #if NBPFILTER > 0 |
294 | #define BRIDGE_BPF_MTAP_INPUT(sc, m) \ |
295 | if (sc->sc_bpf_input != NULL) \ |
296 | bridge_bpf_input(sc->sc_ifp, m, __func__, __LINE__) |
297 | #else /* NBPFILTER */ |
298 | #define BRIDGE_BPF_MTAP_INPUT(ifp, m) |
299 | #endif /* NBPFILTER */ |
300 | |
301 | /* |
302 | * Initial size of the route hash table. Must be a power of two. |
303 | */ |
304 | #ifndef BRIDGE_RTHASH_SIZE |
305 | #define BRIDGE_RTHASH_SIZE 16 |
306 | #endif |
307 | |
308 | /* |
309 | * Maximum size of the routing hash table |
310 | */ |
311 | #define BRIDGE_RTHASH_SIZE_MAX 2048 |
312 | |
313 | #define BRIDGE_RTHASH_MASK(sc) ((sc)->sc_rthash_size - 1) |
314 | |
315 | /* |
316 | * Maximum number of addresses to cache. |
317 | */ |
318 | #ifndef BRIDGE_RTABLE_MAX |
319 | #define BRIDGE_RTABLE_MAX 100 |
320 | #endif |
321 | |
322 | |
323 | /* |
324 | * Timeout (in seconds) for entries learned dynamically. |
325 | */ |
326 | #ifndef BRIDGE_RTABLE_TIMEOUT |
327 | #define BRIDGE_RTABLE_TIMEOUT (20 * 60) /* same as ARP */ |
328 | #endif |
329 | |
330 | /* |
331 | * Number of seconds between walks of the route list. |
332 | */ |
333 | #ifndef BRIDGE_RTABLE_PRUNE_PERIOD |
334 | #define BRIDGE_RTABLE_PRUNE_PERIOD (5 * 60) |
335 | #endif |
336 | |
337 | /* |
338 | * Number of MAC NAT entries |
339 | * - sized based on 16 clients (including MAC NAT interface) |
340 | * each with 4 addresses |
341 | */ |
342 | #ifndef BRIDGE_MAC_NAT_ENTRY_MAX |
343 | #define BRIDGE_MAC_NAT_ENTRY_MAX 64 |
344 | #endif /* BRIDGE_MAC_NAT_ENTRY_MAX */ |
345 | |
346 | /* |
347 | * List of capabilities to possibly mask on the member interface. |
348 | */ |
349 | #define BRIDGE_IFCAPS_MASK (IFCAP_TSO | IFCAP_TXCSUM) |
350 | /* |
351 | * List of capabilities to disable on the member interface. |
352 | */ |
353 | #define BRIDGE_IFCAPS_STRIP IFCAP_LRO |
354 | |
355 | /* |
356 | * Bridge interface list entry. |
357 | */ |
358 | struct bridge_iflist { |
359 | TAILQ_ENTRY(bridge_iflist) bif_next; |
360 | struct ifnet *bif_ifp; /* member if */ |
361 | struct bstp_port bif_stp; /* STP state */ |
362 | uint32_t bif_ifflags; /* member if flags */ |
363 | int bif_savedcaps; /* saved capabilities */ |
364 | uint32_t bif_addrmax; /* max # of addresses */ |
365 | uint32_t bif_addrcnt; /* cur. # of addresses */ |
366 | uint32_t bif_addrexceeded; /* # of address violations */ |
367 | |
368 | interface_filter_t bif_iff_ref; |
369 | struct bridge_softc *bif_sc; |
370 | uint32_t bif_flags; |
371 | |
372 | /* host filter */ |
373 | struct in_addr bif_hf_ipsrc; |
374 | uint8_t bif_hf_hwsrc[ETHER_ADDR_LEN]; |
375 | |
376 | struct ifbrmstats bif_stats; |
377 | }; |
378 | |
379 | static inline bool |
380 | bif_ifflags_are_set(struct bridge_iflist * bif, uint32_t flags) |
381 | { |
382 | return (bif->bif_ifflags & flags) == flags; |
383 | } |
384 | |
385 | static inline bool |
386 | bif_has_checksum_offload(struct bridge_iflist * bif) |
387 | { |
388 | return bif_ifflags_are_set(bif, IFBIF_CHECKSUM_OFFLOAD); |
389 | } |
390 | |
391 | /* fake errors to make the code clearer */ |
392 | #define _EBADIP EJUSTRETURN |
393 | #define _EBADIPCHECKSUM EJUSTRETURN |
394 | #define _EBADIPV6 EJUSTRETURN |
395 | #define _EBADUDP EJUSTRETURN |
396 | #define _EBADTCP EJUSTRETURN |
397 | #define _EBADUDPCHECKSUM EJUSTRETURN |
398 | #define _EBADTCPCHECKSUM EJUSTRETURN |
399 | |
400 | #define BIFF_PROMISC 0x01 /* promiscuous mode set */ |
401 | #define BIFF_PROTO_ATTACHED 0x02 /* protocol attached */ |
402 | #define BIFF_FILTER_ATTACHED 0x04 /* interface filter attached */ |
403 | #define BIFF_MEDIA_ACTIVE 0x08 /* interface media active */ |
404 | #define BIFF_HOST_FILTER 0x10 /* host filter enabled */ |
405 | #define BIFF_HF_HWSRC 0x20 /* host filter source MAC is set */ |
406 | #define BIFF_HF_IPSRC 0x40 /* host filter source IP is set */ |
407 | #define BIFF_INPUT_BROADCAST 0x80 /* send broadcast packets in */ |
408 | #define BIFF_IN_MEMBER_LIST 0x100 /* added to the member list */ |
409 | #define BIFF_WIFI_INFRA 0x200 /* interface is Wi-Fi infra */ |
410 | #define BIFF_ALL_MULTI 0x400 /* allmulti set */ |
411 | #define BIFF_LRO_DISABLED 0x800 /* LRO was disabled */ |
412 | #if SKYWALK |
413 | #define BIFF_FLOWSWITCH_ATTACHED 0x1000 /* we attached the flowswitch */ |
414 | #define BIFF_NETAGENT_REMOVED 0x2000 /* we removed the netagent */ |
415 | #endif /* SKYWALK */ |
416 | |
417 | /* |
418 | * mac_nat_entry |
419 | * - translates between an IP address and MAC address on a specific |
420 | * bridge interface member |
421 | */ |
422 | struct mac_nat_entry { |
423 | LIST_ENTRY(mac_nat_entry) mne_list; /* list linkage */ |
424 | struct bridge_iflist *mne_bif; /* originating interface */ |
425 | unsigned long mne_expire; /* expiration time */ |
426 | union { |
427 | struct in_addr mneu_ip; /* originating IPv4 address */ |
428 | struct in6_addr mneu_ip6; /* originating IPv6 address */ |
429 | } mne_u; |
430 | uint8_t mne_mac[ETHER_ADDR_LEN]; |
431 | uint8_t mne_flags; |
432 | uint8_t mne_reserved; |
433 | }; |
434 | #define mne_ip mne_u.mneu_ip |
435 | #define mne_ip6 mne_u.mneu_ip6 |
436 | |
437 | #define MNE_FLAGS_IPV6 0x01 /* IPv6 address */ |
438 | |
439 | LIST_HEAD(mac_nat_entry_list, mac_nat_entry); |
440 | |
441 | /* |
442 | * mac_nat_record |
443 | * - used by bridge_mac_nat_output() to convey the translation that needs |
444 | * to take place in bridge_mac_nat_translate |
445 | * - holds enough information so that the translation can be done later without |
446 | * holding the bridge lock |
447 | */ |
448 | struct mac_nat_record { |
449 | uint16_t mnr_ether_type; |
450 | union { |
451 | uint16_t mnru_arp_offset; |
452 | struct { |
453 | uint16_t mnruip_dhcp_flags; |
454 | uint16_t mnruip_udp_csum; |
455 | uint8_t ; |
456 | } mnru_ip; |
457 | struct { |
458 | uint16_t mnruip6_icmp6_len; |
459 | uint16_t mnruip6_lladdr_offset; |
460 | uint8_t mnruip6_icmp6_type; |
461 | uint8_t ; |
462 | } mnru_ip6; |
463 | } mnr_u; |
464 | }; |
465 | |
466 | #define mnr_arp_offset mnr_u.mnru_arp_offset |
467 | |
468 | #define mnr_u.mnru_ip.mnruip_header_len |
469 | #define mnr_ip_dhcp_flags mnr_u.mnru_ip.mnruip_dhcp_flags |
470 | #define mnr_ip_udp_csum mnr_u.mnru_ip.mnruip_udp_csum |
471 | |
472 | #define mnr_ip6_icmp6_len mnr_u.mnru_ip6.mnruip6_icmp6_len |
473 | #define mnr_ip6_icmp6_type mnr_u.mnru_ip6.mnruip6_icmp6_type |
474 | #define mnr_u.mnru_ip6.mnruip6_header_len |
475 | #define mnr_ip6_lladdr_offset mnr_u.mnru_ip6.mnruip6_lladdr_offset |
476 | |
477 | /* |
478 | * Bridge route node. |
479 | */ |
480 | struct bridge_rtnode { |
481 | LIST_ENTRY(bridge_rtnode) brt_hash; /* hash table linkage */ |
482 | LIST_ENTRY(bridge_rtnode) brt_list; /* list linkage */ |
483 | struct bridge_iflist *brt_dst; /* destination if */ |
484 | unsigned long brt_expire; /* expiration time */ |
485 | uint8_t brt_flags; /* address flags */ |
486 | uint8_t brt_addr[ETHER_ADDR_LEN]; |
487 | uint16_t brt_vlan; /* vlan id */ |
488 | |
489 | }; |
490 | #define brt_ifp brt_dst->bif_ifp |
491 | |
492 | /* |
493 | * Bridge delayed function call context |
494 | */ |
495 | typedef void (*bridge_delayed_func_t)(struct bridge_softc *); |
496 | |
497 | struct bridge_delayed_call { |
498 | struct bridge_softc *bdc_sc; |
499 | bridge_delayed_func_t bdc_func; /* Function to call */ |
500 | struct timespec bdc_ts; /* Time to call */ |
501 | u_int32_t bdc_flags; |
502 | thread_call_t bdc_thread_call; |
503 | }; |
504 | |
505 | #define BDCF_OUTSTANDING 0x01 /* Delayed call has been scheduled */ |
506 | #define BDCF_CANCELLING 0x02 /* May be waiting for call completion */ |
507 | |
508 | /* |
509 | * Software state for each bridge. |
510 | */ |
511 | LIST_HEAD(_bridge_rtnode_list, bridge_rtnode); |
512 | |
513 | struct bridge_softc { |
514 | struct ifnet *sc_ifp; /* make this an interface */ |
515 | u_int32_t sc_flags; |
516 | LIST_ENTRY(bridge_softc) sc_list; |
517 | decl_lck_mtx_data(, sc_mtx); |
518 | struct _bridge_rtnode_list *sc_rthash; /* our forwarding table */ |
519 | struct _bridge_rtnode_list sc_rtlist; /* list version of above */ |
520 | uint32_t sc_rthash_key; /* key for hash */ |
521 | uint32_t sc_rthash_size; /* size of the hash table */ |
522 | struct bridge_delayed_call sc_aging_timer; |
523 | struct bridge_delayed_call sc_resize_call; |
524 | TAILQ_HEAD(, bridge_iflist) sc_spanlist; /* span ports list */ |
525 | struct bstp_state sc_stp; /* STP state */ |
526 | bpf_packet_func sc_bpf_input; |
527 | bpf_packet_func sc_bpf_output; |
528 | void *sc_cv; |
529 | uint32_t sc_brtmax; /* max # of addresses */ |
530 | uint32_t sc_brtcnt; /* cur. # of addresses */ |
531 | uint32_t sc_brttimeout; /* rt timeout in seconds */ |
532 | uint32_t sc_iflist_ref; /* refcount for sc_iflist */ |
533 | uint32_t sc_iflist_xcnt; /* refcount for sc_iflist */ |
534 | TAILQ_HEAD(, bridge_iflist) sc_iflist; /* member interface list */ |
535 | uint32_t sc_brtexceeded; /* # of cache drops */ |
536 | uint32_t sc_filter_flags; /* ipf and flags */ |
537 | struct ifnet *sc_ifaddr; /* member mac copied from */ |
538 | u_char sc_defaddr[6]; /* Default MAC address */ |
539 | char sc_if_xname[IFNAMSIZ]; |
540 | |
541 | struct bridge_iflist *sc_mac_nat_bif; /* single MAC NAT interface */ |
542 | struct mac_nat_entry_list sc_mne_list; /* MAC NAT IPv4 */ |
543 | struct mac_nat_entry_list sc_mne_list_v6;/* MAC NAT IPv6 */ |
544 | uint32_t sc_mne_max; /* max # of entries */ |
545 | uint32_t sc_mne_count; /* cur. # of entries */ |
546 | uint32_t sc_mne_allocation_failures; |
547 | #if BRIDGE_LOCK_DEBUG |
548 | /* |
549 | * Locking and unlocking calling history |
550 | */ |
551 | void *lock_lr[BR_LCKDBG_MAX]; |
552 | int next_lock_lr; |
553 | void *unlock_lr[BR_LCKDBG_MAX]; |
554 | int next_unlock_lr; |
555 | #endif /* BRIDGE_LOCK_DEBUG */ |
556 | }; |
557 | |
558 | #define SCF_DETACHING 0x01 |
559 | #define SCF_RESIZING 0x02 |
560 | #define SCF_MEDIA_ACTIVE 0x04 |
561 | |
562 | typedef enum { |
563 | CHECKSUM_OPERATION_NONE = 0, |
564 | CHECKSUM_OPERATION_CLEAR_OFFLOAD = 1, |
565 | CHECKSUM_OPERATION_FINALIZE = 2, |
566 | CHECKSUM_OPERATION_COMPUTE = 3, |
567 | } ChecksumOperation; |
568 | |
569 | union iphdr { |
570 | struct ip *ip; |
571 | struct ip6_hdr *ip6; |
572 | void * ptr; |
573 | }; |
574 | |
575 | typedef struct { |
576 | u_int ip_hlen; /* IP header length */ |
577 | u_int ip_pay_len; /* length of payload (exclusive of ip_hlen) */ |
578 | u_int ip_opt_len; /* IPv6 options headers length */ |
579 | uint8_t ip_proto; /* IPPROTO_TCP, IPPROTO_UDP, etc. */ |
580 | bool ip_is_ipv4; |
581 | bool ip_is_fragmented; |
582 | union iphdr ip_hdr; /* pointer to IP header */ |
583 | void * ip_proto_hdr; /* ptr to protocol header (TCP) */ |
584 | } ip_packet_info, *ip_packet_info_t; |
585 | |
586 | struct bridge_hostfilter_stats bridge_hostfilter_stats; |
587 | |
588 | static LCK_GRP_DECLARE(bridge_lock_grp, "if_bridge" ); |
589 | #if BRIDGE_LOCK_DEBUG |
590 | static LCK_ATTR_DECLARE(bridge_lock_attr, 0, 0); |
591 | #else |
592 | static LCK_ATTR_DECLARE(bridge_lock_attr, LCK_ATTR_DEBUG, 0); |
593 | #endif |
594 | static LCK_MTX_DECLARE_ATTR(bridge_list_mtx, &bridge_lock_grp, &bridge_lock_attr); |
595 | |
596 | static int bridge_rtable_prune_period = BRIDGE_RTABLE_PRUNE_PERIOD; |
597 | |
598 | static KALLOC_TYPE_DEFINE(bridge_rtnode_pool, struct bridge_rtnode, NET_KT_DEFAULT); |
599 | static KALLOC_TYPE_DEFINE(bridge_mne_pool, struct mac_nat_entry, NET_KT_DEFAULT); |
600 | |
601 | static int bridge_clone_create(struct if_clone *, uint32_t, void *); |
602 | static int bridge_clone_destroy(struct ifnet *); |
603 | |
604 | static errno_t bridge_ioctl(struct ifnet *, u_long, void *); |
605 | #if HAS_IF_CAP |
606 | static void bridge_mutecaps(struct bridge_softc *); |
607 | static void bridge_set_ifcap(struct bridge_softc *, struct bridge_iflist *, |
608 | int); |
609 | #endif |
610 | static errno_t bridge_set_tso(struct bridge_softc *); |
611 | static void bridge_proto_attach_changed(struct ifnet *); |
612 | static int bridge_init(struct ifnet *); |
613 | #if HAS_BRIDGE_DUMMYNET |
614 | static void bridge_dummynet(struct mbuf *, struct ifnet *); |
615 | #endif |
616 | static void bridge_ifstop(struct ifnet *, int); |
617 | static int bridge_output(struct ifnet *, struct mbuf *); |
618 | static void bridge_finalize_cksum(struct ifnet *, struct mbuf *); |
619 | static void bridge_start(struct ifnet *); |
620 | static errno_t bridge_input(struct ifnet *, mbuf_t *); |
621 | static errno_t bridge_iff_input(void *, ifnet_t, protocol_family_t, |
622 | mbuf_t *, char **); |
623 | static errno_t bridge_iff_output(void *, ifnet_t, protocol_family_t, |
624 | mbuf_t *); |
625 | static errno_t bridge_member_output(struct bridge_softc *sc, ifnet_t ifp, |
626 | mbuf_t *m); |
627 | |
628 | static int bridge_enqueue(ifnet_t, struct ifnet *, |
629 | struct ifnet *, struct mbuf *, ChecksumOperation); |
630 | static void bridge_rtdelete(struct bridge_softc *, struct ifnet *ifp, int); |
631 | |
632 | static void bridge_forward(struct bridge_softc *, struct bridge_iflist *, |
633 | struct mbuf *); |
634 | |
635 | static void bridge_aging_timer(struct bridge_softc *sc); |
636 | |
637 | static void bridge_broadcast(struct bridge_softc *, struct bridge_iflist *, |
638 | struct mbuf *, int); |
639 | static void bridge_span(struct bridge_softc *, struct mbuf *); |
640 | |
641 | static int bridge_rtupdate(struct bridge_softc *, const uint8_t *, |
642 | uint16_t, struct bridge_iflist *, int, uint8_t); |
643 | static struct ifnet *bridge_rtlookup(struct bridge_softc *, const uint8_t *, |
644 | uint16_t); |
645 | static void bridge_rttrim(struct bridge_softc *); |
646 | static void bridge_rtage(struct bridge_softc *); |
647 | static void bridge_rtflush(struct bridge_softc *, int); |
648 | static int bridge_rtdaddr(struct bridge_softc *, const uint8_t *, |
649 | uint16_t); |
650 | |
651 | static int bridge_rtable_init(struct bridge_softc *); |
652 | static void bridge_rtable_fini(struct bridge_softc *); |
653 | |
654 | static void bridge_rthash_resize(struct bridge_softc *); |
655 | |
656 | static int bridge_rtnode_addr_cmp(const uint8_t *, const uint8_t *); |
657 | static struct bridge_rtnode *bridge_rtnode_lookup(struct bridge_softc *, |
658 | const uint8_t *, uint16_t); |
659 | static int bridge_rtnode_hash(struct bridge_softc *, |
660 | struct bridge_rtnode *); |
661 | static int bridge_rtnode_insert(struct bridge_softc *, |
662 | struct bridge_rtnode *); |
663 | static void bridge_rtnode_destroy(struct bridge_softc *, |
664 | struct bridge_rtnode *); |
665 | #if BRIDGESTP |
666 | static void bridge_rtable_expire(struct ifnet *, int); |
667 | static void bridge_state_change(struct ifnet *, int); |
668 | #endif /* BRIDGESTP */ |
669 | |
670 | static struct bridge_iflist *bridge_lookup_member(struct bridge_softc *, |
671 | const char *name); |
672 | static struct bridge_iflist *bridge_lookup_member_if(struct bridge_softc *, |
673 | struct ifnet *ifp); |
674 | static void bridge_delete_member(struct bridge_softc *, |
675 | struct bridge_iflist *); |
676 | static void bridge_delete_span(struct bridge_softc *, |
677 | struct bridge_iflist *); |
678 | |
679 | static int bridge_ioctl_add(struct bridge_softc *, void *); |
680 | static int bridge_ioctl_del(struct bridge_softc *, void *); |
681 | static int bridge_ioctl_gifflags(struct bridge_softc *, void *); |
682 | static int bridge_ioctl_sifflags(struct bridge_softc *, void *); |
683 | static int bridge_ioctl_scache(struct bridge_softc *, void *); |
684 | static int bridge_ioctl_gcache(struct bridge_softc *, void *); |
685 | static int bridge_ioctl_gifs32(struct bridge_softc *, void *); |
686 | static int bridge_ioctl_gifs64(struct bridge_softc *, void *); |
687 | static int bridge_ioctl_rts32(struct bridge_softc *, void *); |
688 | static int bridge_ioctl_rts64(struct bridge_softc *, void *); |
689 | static int bridge_ioctl_saddr32(struct bridge_softc *, void *); |
690 | static int bridge_ioctl_saddr64(struct bridge_softc *, void *); |
691 | static int bridge_ioctl_sto(struct bridge_softc *, void *); |
692 | static int bridge_ioctl_gto(struct bridge_softc *, void *); |
693 | static int bridge_ioctl_daddr32(struct bridge_softc *, void *); |
694 | static int bridge_ioctl_daddr64(struct bridge_softc *, void *); |
695 | static int bridge_ioctl_flush(struct bridge_softc *, void *); |
696 | static int bridge_ioctl_gpri(struct bridge_softc *, void *); |
697 | static int bridge_ioctl_spri(struct bridge_softc *, void *); |
698 | static int bridge_ioctl_ght(struct bridge_softc *, void *); |
699 | static int bridge_ioctl_sht(struct bridge_softc *, void *); |
700 | static int bridge_ioctl_gfd(struct bridge_softc *, void *); |
701 | static int bridge_ioctl_sfd(struct bridge_softc *, void *); |
702 | static int bridge_ioctl_gma(struct bridge_softc *, void *); |
703 | static int bridge_ioctl_sma(struct bridge_softc *, void *); |
704 | static int bridge_ioctl_sifprio(struct bridge_softc *, void *); |
705 | static int bridge_ioctl_sifcost(struct bridge_softc *, void *); |
706 | static int bridge_ioctl_sifmaxaddr(struct bridge_softc *, void *); |
707 | static int bridge_ioctl_addspan(struct bridge_softc *, void *); |
708 | static int bridge_ioctl_delspan(struct bridge_softc *, void *); |
709 | static int bridge_ioctl_gbparam32(struct bridge_softc *, void *); |
710 | static int bridge_ioctl_gbparam64(struct bridge_softc *, void *); |
711 | static int bridge_ioctl_grte(struct bridge_softc *, void *); |
712 | static int bridge_ioctl_gifsstp32(struct bridge_softc *, void *); |
713 | static int bridge_ioctl_gifsstp64(struct bridge_softc *, void *); |
714 | static int bridge_ioctl_sproto(struct bridge_softc *, void *); |
715 | static int bridge_ioctl_stxhc(struct bridge_softc *, void *); |
716 | static int bridge_ioctl_purge(struct bridge_softc *sc, void *); |
717 | static int bridge_ioctl_gfilt(struct bridge_softc *, void *); |
718 | static int bridge_ioctl_sfilt(struct bridge_softc *, void *); |
719 | static int bridge_ioctl_ghostfilter(struct bridge_softc *, void *); |
720 | static int bridge_ioctl_shostfilter(struct bridge_softc *, void *); |
721 | static int bridge_ioctl_gmnelist32(struct bridge_softc *, void *); |
722 | static int bridge_ioctl_gmnelist64(struct bridge_softc *, void *); |
723 | static int bridge_ioctl_gifstats32(struct bridge_softc *, void *); |
724 | static int bridge_ioctl_gifstats64(struct bridge_softc *, void *); |
725 | |
726 | static int bridge_pf(struct mbuf **, struct ifnet *, uint32_t sc_filter_flags, int input); |
727 | static int bridge_ip_checkbasic(struct mbuf **); |
728 | static int bridge_ip6_checkbasic(struct mbuf **); |
729 | |
730 | static errno_t bridge_set_bpf_tap(ifnet_t, bpf_tap_mode, bpf_packet_func); |
731 | static errno_t bridge_bpf_input(ifnet_t, struct mbuf *, const char *, int); |
732 | static errno_t bridge_bpf_output(ifnet_t, struct mbuf *); |
733 | |
734 | static void bridge_detach(ifnet_t); |
735 | static void bridge_link_event(struct ifnet *, u_int32_t); |
736 | static void bridge_iflinkevent(struct ifnet *); |
737 | static u_int32_t bridge_updatelinkstatus(struct bridge_softc *); |
738 | static int interface_media_active(struct ifnet *); |
739 | static void bridge_schedule_delayed_call(struct bridge_delayed_call *); |
740 | static void bridge_cancel_delayed_call(struct bridge_delayed_call *); |
741 | static void bridge_cleanup_delayed_call(struct bridge_delayed_call *); |
742 | static int bridge_host_filter(struct bridge_iflist *, mbuf_t *); |
743 | |
744 | static errno_t bridge_mac_nat_enable(struct bridge_softc *, |
745 | struct bridge_iflist *); |
746 | static void bridge_mac_nat_disable(struct bridge_softc *sc); |
747 | static void bridge_mac_nat_age_entries(struct bridge_softc *sc, unsigned long); |
748 | static void bridge_mac_nat_populate_entries(struct bridge_softc *sc); |
749 | static void bridge_mac_nat_flush_entries(struct bridge_softc *sc, |
750 | struct bridge_iflist *); |
751 | static ifnet_t bridge_mac_nat_input(struct bridge_softc *, mbuf_t *, |
752 | boolean_t *); |
753 | static boolean_t bridge_mac_nat_output(struct bridge_softc *, |
754 | struct bridge_iflist *, mbuf_t *, struct mac_nat_record *); |
755 | static void bridge_mac_nat_translate(mbuf_t *, struct mac_nat_record *, |
756 | const caddr_t); |
757 | static bool is_broadcast_ip_packet(mbuf_t *); |
758 | static bool in_addr_is_ours(const struct in_addr); |
759 | static bool in6_addr_is_ours(const struct in6_addr *, uint32_t); |
760 | |
761 | #define m_copypacket(m, how) m_copym(m, 0, M_COPYALL, how) |
762 | |
763 | static int |
764 | gso_tcp(struct ifnet *ifp, struct mbuf **mp, u_int mac_hlen, bool is_ipv4, |
765 | boolean_t is_tx); |
766 | |
767 | /* The default bridge vlan is 1 (IEEE 802.1Q-2003 Table 9-2) */ |
768 | #define VLANTAGOF(_m) 0 |
769 | |
770 | u_int8_t bstp_etheraddr[ETHER_ADDR_LEN] = |
771 | { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; |
772 | |
773 | static u_int8_t ethernulladdr[ETHER_ADDR_LEN] = |
774 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
775 | |
776 | #if BRIDGESTP |
777 | static struct bstp_cb_ops bridge_ops = { |
778 | .bcb_state = bridge_state_change, |
779 | .bcb_rtage = bridge_rtable_expire |
780 | }; |
781 | #endif /* BRIDGESTP */ |
782 | |
783 | SYSCTL_DECL(_net_link); |
784 | SYSCTL_NODE(_net_link, IFT_BRIDGE, bridge, CTLFLAG_RW | CTLFLAG_LOCKED, 0, |
785 | "Bridge" ); |
786 | |
787 | static int bridge_inherit_mac = 0; /* share MAC with first bridge member */ |
788 | SYSCTL_INT(_net_link_bridge, OID_AUTO, inherit_mac, |
789 | CTLFLAG_RW | CTLFLAG_LOCKED, |
790 | &bridge_inherit_mac, 0, |
791 | "Inherit MAC address from the first bridge member" ); |
792 | |
793 | SYSCTL_INT(_net_link_bridge, OID_AUTO, rtable_prune_period, |
794 | CTLFLAG_RW | CTLFLAG_LOCKED, |
795 | &bridge_rtable_prune_period, 0, |
796 | "Interval between pruning of routing table" ); |
797 | |
798 | static unsigned int bridge_rtable_hash_size_max = BRIDGE_RTHASH_SIZE_MAX; |
799 | SYSCTL_UINT(_net_link_bridge, OID_AUTO, rtable_hash_size_max, |
800 | CTLFLAG_RW | CTLFLAG_LOCKED, |
801 | &bridge_rtable_hash_size_max, 0, |
802 | "Maximum size of the routing hash table" ); |
803 | |
804 | #if BRIDGE_DELAYED_CALLBACK_DEBUG |
805 | static int bridge_delayed_callback_delay = 0; |
806 | SYSCTL_INT(_net_link_bridge, OID_AUTO, delayed_callback_delay, |
807 | CTLFLAG_RW | CTLFLAG_LOCKED, |
808 | &bridge_delayed_callback_delay, 0, |
809 | "Delay before calling delayed function" ); |
810 | #endif |
811 | |
812 | SYSCTL_STRUCT(_net_link_bridge, OID_AUTO, |
813 | hostfilterstats, CTLFLAG_RD | CTLFLAG_LOCKED, |
814 | &bridge_hostfilter_stats, bridge_hostfilter_stats, "" ); |
815 | |
816 | #if BRIDGESTP |
817 | static int log_stp = 0; /* log STP state changes */ |
818 | SYSCTL_INT(_net_link_bridge, OID_AUTO, log_stp, CTLFLAG_RW, |
819 | &log_stp, 0, "Log STP state changes" ); |
820 | #endif /* BRIDGESTP */ |
821 | |
822 | struct bridge_control { |
823 | int (*bc_func)(struct bridge_softc *, void *); |
824 | unsigned int bc_argsize; |
825 | unsigned int bc_flags; |
826 | }; |
827 | |
828 | #define VMNET_TAG "com.apple.vmnet" |
829 | #define VMNET_LOCAL_TAG VMNET_TAG ".local" |
830 | #define VMNET_BROADCAST_TAG VMNET_TAG ".broadcast" |
831 | #define VMNET_MULTICAST_TAG VMNET_TAG ".multicast" |
832 | |
833 | static u_int16_t vmnet_tag; |
834 | static u_int16_t vmnet_local_tag; |
835 | static u_int16_t vmnet_broadcast_tag; |
836 | static u_int16_t vmnet_multicast_tag; |
837 | |
838 | static u_int16_t |
839 | allocate_pf_tag(char * name) |
840 | { |
841 | u_int16_t tag; |
842 | |
843 | tag = pf_tagname2tag_ext(name); |
844 | BRIDGE_LOG(LOG_NOTICE, 0, "%s %d" , name, tag); |
845 | return tag; |
846 | } |
847 | |
848 | static void |
849 | allocate_vmnet_pf_tags(void) |
850 | { |
851 | /* allocate tags to use with PF */ |
852 | if (vmnet_tag == 0) { |
853 | vmnet_tag = allocate_pf_tag(VMNET_TAG); |
854 | } |
855 | if (vmnet_local_tag == 0) { |
856 | vmnet_local_tag = allocate_pf_tag(VMNET_LOCAL_TAG); |
857 | } |
858 | if (vmnet_broadcast_tag == 0) { |
859 | vmnet_broadcast_tag = allocate_pf_tag(VMNET_BROADCAST_TAG); |
860 | } |
861 | if (vmnet_multicast_tag == 0) { |
862 | vmnet_multicast_tag = allocate_pf_tag(VMNET_MULTICAST_TAG); |
863 | } |
864 | } |
865 | |
866 | #define BC_F_COPYIN 0x01 /* copy arguments in */ |
867 | #define BC_F_COPYOUT 0x02 /* copy arguments out */ |
868 | #define BC_F_SUSER 0x04 /* do super-user check */ |
869 | |
870 | static const struct bridge_control bridge_control_table32[] = { |
871 | { .bc_func = bridge_ioctl_add, .bc_argsize = sizeof(struct ifbreq), /* 0 */ |
872 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
873 | { .bc_func = bridge_ioctl_del, .bc_argsize = sizeof(struct ifbreq), |
874 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
875 | |
876 | { .bc_func = bridge_ioctl_gifflags, .bc_argsize = sizeof(struct ifbreq), |
877 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
878 | { .bc_func = bridge_ioctl_sifflags, .bc_argsize = sizeof(struct ifbreq), |
879 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
880 | |
881 | { .bc_func = bridge_ioctl_scache, .bc_argsize = sizeof(struct ifbrparam), |
882 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
883 | { .bc_func = bridge_ioctl_gcache, .bc_argsize = sizeof(struct ifbrparam), |
884 | .bc_flags = BC_F_COPYOUT }, |
885 | |
886 | { .bc_func = bridge_ioctl_gifs32, .bc_argsize = sizeof(struct ifbifconf32), |
887 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
888 | { .bc_func = bridge_ioctl_rts32, .bc_argsize = sizeof(struct ifbaconf32), |
889 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
890 | |
891 | { .bc_func = bridge_ioctl_saddr32, .bc_argsize = sizeof(struct ifbareq32), |
892 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
893 | |
894 | { .bc_func = bridge_ioctl_sto, .bc_argsize = sizeof(struct ifbrparam), |
895 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
896 | { .bc_func = bridge_ioctl_gto, .bc_argsize = sizeof(struct ifbrparam), /* 10 */ |
897 | .bc_flags = BC_F_COPYOUT }, |
898 | |
899 | { .bc_func = bridge_ioctl_daddr32, .bc_argsize = sizeof(struct ifbareq32), |
900 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
901 | |
902 | { .bc_func = bridge_ioctl_flush, .bc_argsize = sizeof(struct ifbreq), |
903 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
904 | |
905 | { .bc_func = bridge_ioctl_gpri, .bc_argsize = sizeof(struct ifbrparam), |
906 | .bc_flags = BC_F_COPYOUT }, |
907 | { .bc_func = bridge_ioctl_spri, .bc_argsize = sizeof(struct ifbrparam), |
908 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
909 | |
910 | { .bc_func = bridge_ioctl_ght, .bc_argsize = sizeof(struct ifbrparam), |
911 | .bc_flags = BC_F_COPYOUT }, |
912 | { .bc_func = bridge_ioctl_sht, .bc_argsize = sizeof(struct ifbrparam), |
913 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
914 | |
915 | { .bc_func = bridge_ioctl_gfd, .bc_argsize = sizeof(struct ifbrparam), |
916 | .bc_flags = BC_F_COPYOUT }, |
917 | { .bc_func = bridge_ioctl_sfd, .bc_argsize = sizeof(struct ifbrparam), |
918 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
919 | |
920 | { .bc_func = bridge_ioctl_gma, .bc_argsize = sizeof(struct ifbrparam), |
921 | .bc_flags = BC_F_COPYOUT }, |
922 | { .bc_func = bridge_ioctl_sma, .bc_argsize = sizeof(struct ifbrparam), /* 20 */ |
923 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
924 | |
925 | { .bc_func = bridge_ioctl_sifprio, .bc_argsize = sizeof(struct ifbreq), |
926 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
927 | |
928 | { .bc_func = bridge_ioctl_sifcost, .bc_argsize = sizeof(struct ifbreq), |
929 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
930 | |
931 | { .bc_func = bridge_ioctl_gfilt, .bc_argsize = sizeof(struct ifbrparam), |
932 | .bc_flags = BC_F_COPYOUT }, |
933 | { .bc_func = bridge_ioctl_sfilt, .bc_argsize = sizeof(struct ifbrparam), |
934 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
935 | |
936 | { .bc_func = bridge_ioctl_purge, .bc_argsize = sizeof(struct ifbreq), |
937 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
938 | |
939 | { .bc_func = bridge_ioctl_addspan, .bc_argsize = sizeof(struct ifbreq), |
940 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
941 | { .bc_func = bridge_ioctl_delspan, .bc_argsize = sizeof(struct ifbreq), |
942 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
943 | |
944 | { .bc_func = bridge_ioctl_gbparam32, .bc_argsize = sizeof(struct ifbropreq32), |
945 | .bc_flags = BC_F_COPYOUT }, |
946 | |
947 | { .bc_func = bridge_ioctl_grte, .bc_argsize = sizeof(struct ifbrparam), |
948 | .bc_flags = BC_F_COPYOUT }, |
949 | |
950 | { .bc_func = bridge_ioctl_gifsstp32, .bc_argsize = sizeof(struct ifbpstpconf32), /* 30 */ |
951 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
952 | |
953 | { .bc_func = bridge_ioctl_sproto, .bc_argsize = sizeof(struct ifbrparam), |
954 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
955 | |
956 | { .bc_func = bridge_ioctl_stxhc, .bc_argsize = sizeof(struct ifbrparam), |
957 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
958 | |
959 | { .bc_func = bridge_ioctl_sifmaxaddr, .bc_argsize = sizeof(struct ifbreq), |
960 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
961 | |
962 | { .bc_func = bridge_ioctl_ghostfilter, .bc_argsize = sizeof(struct ifbrhostfilter), |
963 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
964 | { .bc_func = bridge_ioctl_shostfilter, .bc_argsize = sizeof(struct ifbrhostfilter), |
965 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
966 | |
967 | { .bc_func = bridge_ioctl_gmnelist32, |
968 | .bc_argsize = sizeof(struct ifbrmnelist32), |
969 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
970 | { .bc_func = bridge_ioctl_gifstats32, |
971 | .bc_argsize = sizeof(struct ifbrmreq32), |
972 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
973 | }; |
974 | |
975 | static const struct bridge_control bridge_control_table64[] = { |
976 | { .bc_func = bridge_ioctl_add, .bc_argsize = sizeof(struct ifbreq), /* 0 */ |
977 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
978 | { .bc_func = bridge_ioctl_del, .bc_argsize = sizeof(struct ifbreq), |
979 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
980 | |
981 | { .bc_func = bridge_ioctl_gifflags, .bc_argsize = sizeof(struct ifbreq), |
982 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
983 | { .bc_func = bridge_ioctl_sifflags, .bc_argsize = sizeof(struct ifbreq), |
984 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
985 | |
986 | { .bc_func = bridge_ioctl_scache, .bc_argsize = sizeof(struct ifbrparam), |
987 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
988 | { .bc_func = bridge_ioctl_gcache, .bc_argsize = sizeof(struct ifbrparam), |
989 | .bc_flags = BC_F_COPYOUT }, |
990 | |
991 | { .bc_func = bridge_ioctl_gifs64, .bc_argsize = sizeof(struct ifbifconf64), |
992 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
993 | { .bc_func = bridge_ioctl_rts64, .bc_argsize = sizeof(struct ifbaconf64), |
994 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
995 | |
996 | { .bc_func = bridge_ioctl_saddr64, .bc_argsize = sizeof(struct ifbareq64), |
997 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
998 | |
999 | { .bc_func = bridge_ioctl_sto, .bc_argsize = sizeof(struct ifbrparam), |
1000 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1001 | { .bc_func = bridge_ioctl_gto, .bc_argsize = sizeof(struct ifbrparam), /* 10 */ |
1002 | .bc_flags = BC_F_COPYOUT }, |
1003 | |
1004 | { .bc_func = bridge_ioctl_daddr64, .bc_argsize = sizeof(struct ifbareq64), |
1005 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1006 | |
1007 | { .bc_func = bridge_ioctl_flush, .bc_argsize = sizeof(struct ifbreq), |
1008 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1009 | |
1010 | { .bc_func = bridge_ioctl_gpri, .bc_argsize = sizeof(struct ifbrparam), |
1011 | .bc_flags = BC_F_COPYOUT }, |
1012 | { .bc_func = bridge_ioctl_spri, .bc_argsize = sizeof(struct ifbrparam), |
1013 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1014 | |
1015 | { .bc_func = bridge_ioctl_ght, .bc_argsize = sizeof(struct ifbrparam), |
1016 | .bc_flags = BC_F_COPYOUT }, |
1017 | { .bc_func = bridge_ioctl_sht, .bc_argsize = sizeof(struct ifbrparam), |
1018 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1019 | |
1020 | { .bc_func = bridge_ioctl_gfd, .bc_argsize = sizeof(struct ifbrparam), |
1021 | .bc_flags = BC_F_COPYOUT }, |
1022 | { .bc_func = bridge_ioctl_sfd, .bc_argsize = sizeof(struct ifbrparam), |
1023 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1024 | |
1025 | { .bc_func = bridge_ioctl_gma, .bc_argsize = sizeof(struct ifbrparam), |
1026 | .bc_flags = BC_F_COPYOUT }, |
1027 | { .bc_func = bridge_ioctl_sma, .bc_argsize = sizeof(struct ifbrparam), /* 20 */ |
1028 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1029 | |
1030 | { .bc_func = bridge_ioctl_sifprio, .bc_argsize = sizeof(struct ifbreq), |
1031 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1032 | |
1033 | { .bc_func = bridge_ioctl_sifcost, .bc_argsize = sizeof(struct ifbreq), |
1034 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1035 | |
1036 | { .bc_func = bridge_ioctl_gfilt, .bc_argsize = sizeof(struct ifbrparam), |
1037 | .bc_flags = BC_F_COPYOUT }, |
1038 | { .bc_func = bridge_ioctl_sfilt, .bc_argsize = sizeof(struct ifbrparam), |
1039 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1040 | |
1041 | { .bc_func = bridge_ioctl_purge, .bc_argsize = sizeof(struct ifbreq), |
1042 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1043 | |
1044 | { .bc_func = bridge_ioctl_addspan, .bc_argsize = sizeof(struct ifbreq), |
1045 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1046 | { .bc_func = bridge_ioctl_delspan, .bc_argsize = sizeof(struct ifbreq), |
1047 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1048 | |
1049 | { .bc_func = bridge_ioctl_gbparam64, .bc_argsize = sizeof(struct ifbropreq64), |
1050 | .bc_flags = BC_F_COPYOUT }, |
1051 | |
1052 | { .bc_func = bridge_ioctl_grte, .bc_argsize = sizeof(struct ifbrparam), |
1053 | .bc_flags = BC_F_COPYOUT }, |
1054 | |
1055 | { .bc_func = bridge_ioctl_gifsstp64, .bc_argsize = sizeof(struct ifbpstpconf64), /* 30 */ |
1056 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
1057 | |
1058 | { .bc_func = bridge_ioctl_sproto, .bc_argsize = sizeof(struct ifbrparam), |
1059 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1060 | |
1061 | { .bc_func = bridge_ioctl_stxhc, .bc_argsize = sizeof(struct ifbrparam), |
1062 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1063 | |
1064 | { .bc_func = bridge_ioctl_sifmaxaddr, .bc_argsize = sizeof(struct ifbreq), |
1065 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1066 | |
1067 | { .bc_func = bridge_ioctl_ghostfilter, .bc_argsize = sizeof(struct ifbrhostfilter), |
1068 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
1069 | { .bc_func = bridge_ioctl_shostfilter, .bc_argsize = sizeof(struct ifbrhostfilter), |
1070 | .bc_flags = BC_F_COPYIN | BC_F_SUSER }, |
1071 | |
1072 | { .bc_func = bridge_ioctl_gmnelist64, |
1073 | .bc_argsize = sizeof(struct ifbrmnelist64), |
1074 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
1075 | { .bc_func = bridge_ioctl_gifstats64, |
1076 | .bc_argsize = sizeof(struct ifbrmreq64), |
1077 | .bc_flags = BC_F_COPYIN | BC_F_COPYOUT }, |
1078 | }; |
1079 | |
1080 | static const unsigned int bridge_control_table_size = |
1081 | sizeof(bridge_control_table32) / sizeof(bridge_control_table32[0]); |
1082 | |
1083 | static LIST_HEAD(, bridge_softc) bridge_list = |
1084 | LIST_HEAD_INITIALIZER(bridge_list); |
1085 | |
1086 | #define BRIDGENAME "bridge" |
1087 | #define BRIDGES_MAX IF_MAXUNIT |
1088 | #define BRIDGE_ZONE_MAX_ELEM MIN(IFNETS_MAX, BRIDGES_MAX) |
1089 | |
1090 | static struct if_clone bridge_cloner = |
1091 | IF_CLONE_INITIALIZER(BRIDGENAME, bridge_clone_create, bridge_clone_destroy, |
1092 | 0, BRIDGES_MAX); |
1093 | |
1094 | static int if_bridge_txstart = 0; |
1095 | SYSCTL_INT(_net_link_bridge, OID_AUTO, txstart, CTLFLAG_RW | CTLFLAG_LOCKED, |
1096 | &if_bridge_txstart, 0, "Bridge interface uses TXSTART model" ); |
1097 | |
1098 | SYSCTL_INT(_net_link_bridge, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_LOCKED, |
1099 | &if_bridge_debug, 0, "Bridge debug flags" ); |
1100 | |
1101 | SYSCTL_INT(_net_link_bridge, OID_AUTO, log_level, |
1102 | CTLFLAG_RW | CTLFLAG_LOCKED, |
1103 | &if_bridge_log_level, 0, "Bridge log level" ); |
1104 | |
1105 | static int if_bridge_segmentation = 1; |
1106 | SYSCTL_INT(_net_link_bridge, OID_AUTO, segmentation, |
1107 | CTLFLAG_RW | CTLFLAG_LOCKED, |
1108 | &if_bridge_segmentation, 0, "Bridge interface enable segmentation" ); |
1109 | |
1110 | static int if_bridge_vmnet_pf_tagging = 1; |
1111 | SYSCTL_INT(_net_link_bridge, OID_AUTO, vmnet_pf_tagging, |
1112 | CTLFLAG_RW | CTLFLAG_LOCKED, |
1113 | &if_bridge_segmentation, 0, "Bridge interface enable vmnet PF tagging" ); |
1114 | |
1115 | #define BRIDGE_TSO_REDUCE_MSS_FORWARDING_MAX 256 |
1116 | #define BRIDGE_TSO_REDUCE_MSS_FORWARDING_DEFAULT 110 |
1117 | #define BRIDGE_TSO_REDUCE_MSS_TX_MAX 256 |
1118 | #define BRIDGE_TSO_REDUCE_MSS_TX_DEFAULT 0 |
1119 | |
1120 | static u_int if_bridge_tso_reduce_mss_forwarding |
1121 | = BRIDGE_TSO_REDUCE_MSS_FORWARDING_DEFAULT; |
1122 | static u_int if_bridge_tso_reduce_mss_tx |
1123 | = BRIDGE_TSO_REDUCE_MSS_TX_DEFAULT; |
1124 | |
1125 | static int |
1126 | bridge_tso_reduce_mss(struct sysctl_req *req, u_int * val, u_int val_max) |
1127 | { |
1128 | int changed; |
1129 | int error; |
1130 | u_int new_value; |
1131 | |
1132 | error = sysctl_io_number(req, bigValue: *val, valueSize: sizeof(*val), pValue: &new_value, |
1133 | changed: &changed); |
1134 | if (error == 0 && changed != 0) { |
1135 | if (new_value > val_max) { |
1136 | return EINVAL; |
1137 | } |
1138 | *val = new_value; |
1139 | } |
1140 | return error; |
1141 | } |
1142 | |
1143 | static int |
1144 | bridge_tso_reduce_mss_forwarding_sysctl SYSCTL_HANDLER_ARGS |
1145 | { |
1146 | return bridge_tso_reduce_mss(req, val: &if_bridge_tso_reduce_mss_forwarding, |
1147 | BRIDGE_TSO_REDUCE_MSS_FORWARDING_MAX); |
1148 | } |
1149 | |
1150 | SYSCTL_PROC(_net_link_bridge, OID_AUTO, tso_reduce_mss_forwarding, |
1151 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, |
1152 | 0, 0, bridge_tso_reduce_mss_forwarding_sysctl, "IU" , |
1153 | "Bridge tso reduce mss when forwarding" ); |
1154 | |
1155 | static int |
1156 | bridge_tso_reduce_mss_tx_sysctl SYSCTL_HANDLER_ARGS |
1157 | { |
1158 | return bridge_tso_reduce_mss(req, val: &if_bridge_tso_reduce_mss_tx, |
1159 | BRIDGE_TSO_REDUCE_MSS_TX_MAX); |
1160 | } |
1161 | |
1162 | SYSCTL_PROC(_net_link_bridge, OID_AUTO, tso_reduce_mss_tx, |
1163 | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, |
1164 | 0, 0, bridge_tso_reduce_mss_tx_sysctl, "IU" , |
1165 | "Bridge tso reduce mss on transmit" ); |
1166 | |
1167 | #if DEBUG || DEVELOPMENT |
1168 | #define BRIDGE_FORCE_ONE 0x00000001 |
1169 | #define BRIDGE_FORCE_TWO 0x00000002 |
1170 | static u_int32_t if_bridge_force_errors = 0; |
1171 | SYSCTL_INT(_net_link_bridge, OID_AUTO, force_errors, |
1172 | CTLFLAG_RW | CTLFLAG_LOCKED, |
1173 | &if_bridge_force_errors, 0, "Bridge interface force errors" ); |
1174 | static inline bool |
1175 | bridge_error_is_forced(u_int32_t flags) |
1176 | { |
1177 | return (if_bridge_force_errors & flags) != 0; |
1178 | } |
1179 | |
1180 | #define BRIDGE_ERROR_GET_FORCED(__is_forced, __flags) \ |
1181 | do { \ |
1182 | __is_forced = bridge_error_is_forced(__flags); \ |
1183 | if (__is_forced) { \ |
1184 | BRIDGE_LOG(LOG_NOTICE, 0, "0x%x forced", __flags); \ |
1185 | } \ |
1186 | } while (0) |
1187 | |
1188 | /* |
1189 | * net.link.bridge.reduce_tso_mtu |
1190 | * - when non-zero, the bridge overrides the interface TSO MTU to a lower |
1191 | * value (i.e. 16K) to enable testing the "use GSO instead" path |
1192 | */ |
1193 | static int if_bridge_reduce_tso_mtu = 0; |
1194 | SYSCTL_INT(_net_link_bridge, OID_AUTO, reduce_tso_mtu, |
1195 | CTLFLAG_RW | CTLFLAG_LOCKED, |
1196 | &if_bridge_reduce_tso_mtu, 0, "Bridge interface reduce TSO MTU" ); |
1197 | |
1198 | #endif /* DEBUG || DEVELOPMENT */ |
1199 | |
1200 | static void brlog_ether_header(struct ether_header *); |
1201 | static void brlog_mbuf_data(mbuf_t, size_t, size_t); |
1202 | static void brlog_mbuf_pkthdr(mbuf_t, const char *, const char *); |
1203 | static void brlog_mbuf(mbuf_t, const char *, const char *); |
1204 | static void brlog_link(struct bridge_softc * sc); |
1205 | |
1206 | #if BRIDGE_LOCK_DEBUG |
1207 | static void bridge_lock(struct bridge_softc *); |
1208 | static void bridge_unlock(struct bridge_softc *); |
1209 | static int bridge_lock2ref(struct bridge_softc *); |
1210 | static void bridge_unref(struct bridge_softc *); |
1211 | static void bridge_xlock(struct bridge_softc *); |
1212 | static void bridge_xdrop(struct bridge_softc *); |
1213 | |
1214 | static void |
1215 | bridge_lock(struct bridge_softc *sc) |
1216 | { |
1217 | void *lr_saved = __builtin_return_address(0); |
1218 | |
1219 | BRIDGE_LOCK_ASSERT_NOTHELD(sc); |
1220 | |
1221 | _BRIDGE_LOCK(sc); |
1222 | |
1223 | sc->lock_lr[sc->next_lock_lr] = lr_saved; |
1224 | sc->next_lock_lr = (sc->next_lock_lr + 1) % SO_LCKDBG_MAX; |
1225 | } |
1226 | |
1227 | static void |
1228 | bridge_unlock(struct bridge_softc *sc) |
1229 | { |
1230 | void *lr_saved = __builtin_return_address(0); |
1231 | |
1232 | BRIDGE_LOCK_ASSERT_HELD(sc); |
1233 | |
1234 | sc->unlock_lr[sc->next_unlock_lr] = lr_saved; |
1235 | sc->next_unlock_lr = (sc->next_unlock_lr + 1) % SO_LCKDBG_MAX; |
1236 | |
1237 | _BRIDGE_UNLOCK(sc); |
1238 | } |
1239 | |
1240 | static int |
1241 | bridge_lock2ref(struct bridge_softc *sc) |
1242 | { |
1243 | int error = 0; |
1244 | void *lr_saved = __builtin_return_address(0); |
1245 | |
1246 | BRIDGE_LOCK_ASSERT_HELD(sc); |
1247 | |
1248 | if (sc->sc_iflist_xcnt > 0) { |
1249 | error = EBUSY; |
1250 | } else { |
1251 | sc->sc_iflist_ref++; |
1252 | } |
1253 | |
1254 | sc->unlock_lr[sc->next_unlock_lr] = lr_saved; |
1255 | sc->next_unlock_lr = (sc->next_unlock_lr + 1) % SO_LCKDBG_MAX; |
1256 | |
1257 | _BRIDGE_UNLOCK(sc); |
1258 | |
1259 | return error; |
1260 | } |
1261 | |
1262 | static void |
1263 | bridge_unref(struct bridge_softc *sc) |
1264 | { |
1265 | void *lr_saved = __builtin_return_address(0); |
1266 | |
1267 | BRIDGE_LOCK_ASSERT_NOTHELD(sc); |
1268 | |
1269 | _BRIDGE_LOCK(sc); |
1270 | sc->lock_lr[sc->next_lock_lr] = lr_saved; |
1271 | sc->next_lock_lr = (sc->next_lock_lr + 1) % SO_LCKDBG_MAX; |
1272 | |
1273 | sc->sc_iflist_ref--; |
1274 | |
1275 | sc->unlock_lr[sc->next_unlock_lr] = lr_saved; |
1276 | sc->next_unlock_lr = (sc->next_unlock_lr + 1) % SO_LCKDBG_MAX; |
1277 | if ((sc->sc_iflist_xcnt > 0) && (sc->sc_iflist_ref == 0)) { |
1278 | _BRIDGE_UNLOCK(sc); |
1279 | wakeup(chan: &sc->sc_cv); |
1280 | } else { |
1281 | _BRIDGE_UNLOCK(sc); |
1282 | } |
1283 | } |
1284 | |
1285 | static void |
1286 | bridge_xlock(struct bridge_softc *sc) |
1287 | { |
1288 | void *lr_saved = __builtin_return_address(0); |
1289 | |
1290 | BRIDGE_LOCK_ASSERT_HELD(sc); |
1291 | |
1292 | sc->sc_iflist_xcnt++; |
1293 | while (sc->sc_iflist_ref > 0) { |
1294 | sc->unlock_lr[sc->next_unlock_lr] = lr_saved; |
1295 | sc->next_unlock_lr = (sc->next_unlock_lr + 1) % SO_LCKDBG_MAX; |
1296 | |
1297 | msleep(chan: &sc->sc_cv, mtx: &sc->sc_mtx, PZERO, wmesg: "BRIDGE_XLOCK" , NULL); |
1298 | |
1299 | sc->lock_lr[sc->next_lock_lr] = lr_saved; |
1300 | sc->next_lock_lr = (sc->next_lock_lr + 1) % SO_LCKDBG_MAX; |
1301 | } |
1302 | } |
1303 | |
1304 | static void |
1305 | bridge_xdrop(struct bridge_softc *sc) |
1306 | { |
1307 | BRIDGE_LOCK_ASSERT_HELD(sc); |
1308 | |
1309 | sc->sc_iflist_xcnt--; |
1310 | } |
1311 | |
1312 | #endif /* BRIDGE_LOCK_DEBUG */ |
1313 | |
1314 | static void |
1315 | brlog_mbuf_pkthdr(mbuf_t m, const char *prefix, const char *suffix) |
1316 | { |
1317 | if (m) { |
1318 | BRIDGE_LOG_SIMPLE(LOG_NOTICE, 0, |
1319 | "%spktlen: %u rcvif: 0x%llx header: 0x%llx nextpkt: 0x%llx%s" , |
1320 | prefix ? prefix : "" , (unsigned int)mbuf_pkthdr_len(m), |
1321 | (uint64_t)VM_KERNEL_ADDRPERM(mbuf_pkthdr_rcvif(m)), |
1322 | (uint64_t)VM_KERNEL_ADDRPERM(mbuf_pkthdr_header(m)), |
1323 | (uint64_t)VM_KERNEL_ADDRPERM(mbuf_nextpkt(m)), |
1324 | suffix ? suffix : "" ); |
1325 | } else { |
1326 | BRIDGE_LOG_SIMPLE(LOG_NOTICE, 0, "%s<NULL>%s" , prefix, suffix); |
1327 | } |
1328 | } |
1329 | |
1330 | static void |
1331 | brlog_mbuf(mbuf_t m, const char *prefix, const char *suffix) |
1332 | { |
1333 | if (m) { |
1334 | BRIDGE_LOG_SIMPLE(LOG_NOTICE, 0, |
1335 | "%s0x%llx type: %u flags: 0x%x len: %u data: 0x%llx " |
1336 | "maxlen: %u datastart: 0x%llx next: 0x%llx%s" , |
1337 | prefix ? prefix : "" , (uint64_t)VM_KERNEL_ADDRPERM(m), |
1338 | mbuf_type(m), mbuf_flags(m), (unsigned int)mbuf_len(m), |
1339 | (uint64_t)VM_KERNEL_ADDRPERM(mbuf_data(m)), |
1340 | (unsigned int)mbuf_maxlen(m), |
1341 | (uint64_t)VM_KERNEL_ADDRPERM(mbuf_datastart(m)), |
1342 | (uint64_t)VM_KERNEL_ADDRPERM(mbuf_next(m)), |
1343 | !suffix || (mbuf_flags(m) & MBUF_PKTHDR) ? "" : suffix); |
1344 | if ((mbuf_flags(mbuf: m) & MBUF_PKTHDR)) { |
1345 | brlog_mbuf_pkthdr(m, prefix: "" , suffix); |
1346 | } |
1347 | } else { |
1348 | BRIDGE_LOG_SIMPLE(LOG_NOTICE, 0, "%s<NULL>%s" , prefix, suffix); |
1349 | } |
1350 | } |
1351 | |
1352 | static void |
1353 | brlog_mbuf_data(mbuf_t m, size_t offset, size_t len) |
1354 | { |
1355 | mbuf_t n; |
1356 | size_t i, j; |
1357 | size_t pktlen, mlen, maxlen; |
1358 | unsigned char *ptr; |
1359 | |
1360 | pktlen = mbuf_pkthdr_len(mbuf: m); |
1361 | |
1362 | if (offset > pktlen) { |
1363 | return; |
1364 | } |
1365 | |
1366 | maxlen = (pktlen - offset > len) ? len : pktlen - offset; |
1367 | n = m; |
1368 | mlen = mbuf_len(mbuf: n); |
1369 | ptr = mbuf_data(mbuf: n); |
1370 | for (i = 0, j = 0; i < maxlen; i++, j++) { |
1371 | if (j >= mlen) { |
1372 | n = mbuf_next(mbuf: n); |
1373 | if (n == 0) { |
1374 | break; |
1375 | } |
1376 | ptr = mbuf_data(mbuf: n); |
1377 | mlen = mbuf_len(mbuf: n); |
1378 | j = 0; |
1379 | } |
1380 | if (i >= offset) { |
1381 | BRIDGE_LOG_SIMPLE(LOG_NOTICE, 0, |
1382 | "%02x%s" , ptr[j], i % 2 ? " " : "" ); |
1383 | } |
1384 | } |
1385 | } |
1386 | |
1387 | static void |
1388 | (struct ether_header *eh) |
1389 | { |
1390 | BRIDGE_LOG_SIMPLE(LOG_NOTICE, 0, |
1391 | "%02x:%02x:%02x:%02x:%02x:%02x > " |
1392 | "%02x:%02x:%02x:%02x:%02x:%02x 0x%04x " , |
1393 | eh->ether_shost[0], eh->ether_shost[1], eh->ether_shost[2], |
1394 | eh->ether_shost[3], eh->ether_shost[4], eh->ether_shost[5], |
1395 | eh->ether_dhost[0], eh->ether_dhost[1], eh->ether_dhost[2], |
1396 | eh->ether_dhost[3], eh->ether_dhost[4], eh->ether_dhost[5], |
1397 | ntohs(eh->ether_type)); |
1398 | } |
1399 | |
1400 | static char * |
1401 | ether_ntop(char *buf, size_t len, const u_char *ap) |
1402 | { |
1403 | snprintf(buf, count: len, "%02x:%02x:%02x:%02x:%02x:%02x" , |
1404 | ap[0], ap[1], ap[2], ap[3], ap[4], ap[5]); |
1405 | |
1406 | return buf; |
1407 | } |
1408 | |
1409 | static void |
1410 | brlog_link(struct bridge_softc * sc) |
1411 | { |
1412 | int i; |
1413 | uint32_t sdl_buffer[(offsetof(struct sockaddr_dl, sdl_data) + |
1414 | IFNAMSIZ + ETHER_ADDR_LEN)]; |
1415 | struct sockaddr_dl *sdl = SDL((uint8_t*)&sdl_buffer); /* SDL requires byte pointer */ |
1416 | const u_char * lladdr; |
1417 | char lladdr_str[48]; |
1418 | |
1419 | memset(s: sdl, c: 0, n: sizeof(sdl_buffer)); |
1420 | sdl->sdl_family = AF_LINK; |
1421 | sdl->sdl_nlen = strlen(s: sc->sc_if_xname); |
1422 | sdl->sdl_alen = ETHER_ADDR_LEN; |
1423 | sdl->sdl_len = offsetof(struct sockaddr_dl, sdl_data); |
1424 | memcpy(dst: sdl->sdl_data, src: sc->sc_if_xname, n: sdl->sdl_nlen); |
1425 | memcpy(LLADDR(sdl), src: sc->sc_defaddr, ETHER_ADDR_LEN); |
1426 | lladdr_str[0] = '\0'; |
1427 | for (i = 0, lladdr = CONST_LLADDR(sdl); |
1428 | i < sdl->sdl_alen; |
1429 | i++, lladdr++) { |
1430 | char byte_str[4]; |
1431 | |
1432 | snprintf(byte_str, count: sizeof(byte_str), "%s%x" , i ? ":" : "" , |
1433 | *lladdr); |
1434 | strlcat(dst: lladdr_str, src: byte_str, n: sizeof(lladdr_str)); |
1435 | } |
1436 | BRIDGE_LOG_SIMPLE(LOG_NOTICE, 0, |
1437 | "%s sdl len %d index %d family %d type 0x%x nlen %d alen %d" |
1438 | " slen %d addr %s" , sc->sc_if_xname, |
1439 | sdl->sdl_len, sdl->sdl_index, |
1440 | sdl->sdl_family, sdl->sdl_type, sdl->sdl_nlen, |
1441 | sdl->sdl_alen, sdl->sdl_slen, lladdr_str); |
1442 | } |
1443 | |
1444 | |
1445 | /* |
1446 | * bridgeattach: |
1447 | * |
1448 | * Pseudo-device attach routine. |
1449 | */ |
1450 | __private_extern__ int |
1451 | bridgeattach(int n) |
1452 | { |
1453 | #pragma unused(n) |
1454 | int error; |
1455 | |
1456 | LIST_INIT(&bridge_list); |
1457 | |
1458 | #if BRIDGESTP |
1459 | bstp_sys_init(); |
1460 | #endif /* BRIDGESTP */ |
1461 | |
1462 | error = if_clone_attach(&bridge_cloner); |
1463 | if (error != 0) { |
1464 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_clone_attach failed %d" , error); |
1465 | } |
1466 | return error; |
1467 | } |
1468 | |
1469 | |
1470 | static errno_t |
1471 | bridge_ifnet_set_attrs(struct ifnet * ifp) |
1472 | { |
1473 | errno_t error; |
1474 | |
1475 | error = ifnet_set_mtu(interface: ifp, ETHERMTU); |
1476 | if (error != 0) { |
1477 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_set_mtu failed %d" , error); |
1478 | goto done; |
1479 | } |
1480 | error = ifnet_set_addrlen(interface: ifp, ETHER_ADDR_LEN); |
1481 | if (error != 0) { |
1482 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_set_addrlen failed %d" , error); |
1483 | goto done; |
1484 | } |
1485 | error = ifnet_set_hdrlen(interface: ifp, ETHER_HDR_LEN); |
1486 | if (error != 0) { |
1487 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_set_hdrlen failed %d" , error); |
1488 | goto done; |
1489 | } |
1490 | error = ifnet_set_flags(interface: ifp, |
1491 | IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST, |
1492 | mask: 0xffff); |
1493 | |
1494 | if (error != 0) { |
1495 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_set_flags failed %d" , error); |
1496 | goto done; |
1497 | } |
1498 | done: |
1499 | return error; |
1500 | } |
1501 | |
1502 | /* |
1503 | * bridge_clone_create: |
1504 | * |
1505 | * Create a new bridge instance. |
1506 | */ |
1507 | static int |
1508 | bridge_clone_create(struct if_clone *ifc, uint32_t unit, void *params) |
1509 | { |
1510 | #pragma unused(params) |
1511 | struct ifnet *ifp = NULL; |
1512 | struct bridge_softc *sc = NULL; |
1513 | struct bridge_softc *sc2 = NULL; |
1514 | struct ifnet_init_eparams init_params; |
1515 | errno_t error = 0; |
1516 | uint8_t eth_hostid[ETHER_ADDR_LEN]; |
1517 | int fb, retry, has_hostid; |
1518 | |
1519 | sc = kalloc_type(struct bridge_softc, Z_WAITOK_ZERO_NOFAIL); |
1520 | lck_mtx_init(lck: &sc->sc_mtx, grp: &bridge_lock_grp, attr: &bridge_lock_attr); |
1521 | sc->sc_brtmax = BRIDGE_RTABLE_MAX; |
1522 | sc->sc_mne_max = BRIDGE_MAC_NAT_ENTRY_MAX; |
1523 | sc->sc_brttimeout = BRIDGE_RTABLE_TIMEOUT; |
1524 | sc->sc_filter_flags = 0; |
1525 | |
1526 | TAILQ_INIT(&sc->sc_iflist); |
1527 | |
1528 | /* use the interface name as the unique id for ifp recycle */ |
1529 | snprintf(sc->sc_if_xname, count: sizeof(sc->sc_if_xname), "%s%d" , |
1530 | ifc->ifc_name, unit); |
1531 | bzero(s: &init_params, n: sizeof(init_params)); |
1532 | init_params.ver = IFNET_INIT_CURRENT_VERSION; |
1533 | init_params.len = sizeof(init_params); |
1534 | /* Initialize our routing table. */ |
1535 | error = bridge_rtable_init(sc); |
1536 | if (error != 0) { |
1537 | BRIDGE_LOG(LOG_NOTICE, 0, "bridge_rtable_init failed %d" , error); |
1538 | goto done; |
1539 | } |
1540 | TAILQ_INIT(&sc->sc_spanlist); |
1541 | if (if_bridge_txstart) { |
1542 | init_params.start = bridge_start; |
1543 | } else { |
1544 | init_params.flags = IFNET_INIT_LEGACY; |
1545 | init_params.output = bridge_output; |
1546 | } |
1547 | init_params.set_bpf_tap = bridge_set_bpf_tap; |
1548 | init_params.uniqueid = sc->sc_if_xname; |
1549 | init_params.uniqueid_len = strlen(s: sc->sc_if_xname); |
1550 | init_params.sndq_maxlen = IFQ_MAXLEN; |
1551 | init_params.name = ifc->ifc_name; |
1552 | init_params.unit = unit; |
1553 | init_params.family = IFNET_FAMILY_ETHERNET; |
1554 | init_params.type = IFT_BRIDGE; |
1555 | init_params.demux = ether_demux; |
1556 | init_params.add_proto = ether_add_proto; |
1557 | init_params.del_proto = ether_del_proto; |
1558 | init_params.check_multi = ether_check_multi; |
1559 | init_params.framer_extended = ether_frameout_extended; |
1560 | init_params.softc = sc; |
1561 | init_params.ioctl = bridge_ioctl; |
1562 | init_params.detach = bridge_detach; |
1563 | init_params.broadcast_addr = etherbroadcastaddr; |
1564 | init_params.broadcast_len = ETHER_ADDR_LEN; |
1565 | |
1566 | error = ifnet_allocate_extended(init: &init_params, interface: &ifp); |
1567 | if (error != 0) { |
1568 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_allocate failed %d" , error); |
1569 | goto done; |
1570 | } |
1571 | LIST_INIT(&sc->sc_mne_list); |
1572 | LIST_INIT(&sc->sc_mne_list_v6); |
1573 | sc->sc_ifp = ifp; |
1574 | error = bridge_ifnet_set_attrs(ifp); |
1575 | if (error != 0) { |
1576 | BRIDGE_LOG(LOG_NOTICE, 0, "bridge_ifnet_set_attrs failed %d" , |
1577 | error); |
1578 | goto done; |
1579 | } |
1580 | /* |
1581 | * Generate an ethernet address with a locally administered address. |
1582 | * |
1583 | * Since we are using random ethernet addresses for the bridge, it is |
1584 | * possible that we might have address collisions, so make sure that |
1585 | * this hardware address isn't already in use on another bridge. |
1586 | * The first try uses the "hostid" and falls back to read_frandom(); |
1587 | * for "hostid", we use the MAC address of the first-encountered |
1588 | * Ethernet-type interface that is currently configured. |
1589 | */ |
1590 | fb = 0; |
1591 | has_hostid = (uuid_get_ethernet(ð_hostid[0]) == 0); |
1592 | for (retry = 1; retry != 0;) { |
1593 | if (fb || has_hostid == 0) { |
1594 | read_frandom(buffer: &sc->sc_defaddr, ETHER_ADDR_LEN); |
1595 | sc->sc_defaddr[0] &= ~1; /* clear multicast bit */ |
1596 | sc->sc_defaddr[0] |= 2; /* set the LAA bit */ |
1597 | } else { |
1598 | bcopy(src: ð_hostid[0], dst: &sc->sc_defaddr, |
1599 | ETHER_ADDR_LEN); |
1600 | sc->sc_defaddr[0] &= ~1; /* clear multicast bit */ |
1601 | sc->sc_defaddr[0] |= 2; /* set the LAA bit */ |
1602 | sc->sc_defaddr[3] = /* stir it up a bit */ |
1603 | ((sc->sc_defaddr[3] & 0x0f) << 4) | |
1604 | ((sc->sc_defaddr[3] & 0xf0) >> 4); |
1605 | /* |
1606 | * Mix in the LSB as it's actually pretty significant, |
1607 | * see rdar://14076061 |
1608 | */ |
1609 | sc->sc_defaddr[4] = |
1610 | (((sc->sc_defaddr[4] & 0x0f) << 4) | |
1611 | ((sc->sc_defaddr[4] & 0xf0) >> 4)) ^ |
1612 | sc->sc_defaddr[5]; |
1613 | sc->sc_defaddr[5] = ifp->if_unit & 0xff; |
1614 | } |
1615 | |
1616 | fb = 1; |
1617 | retry = 0; |
1618 | lck_mtx_lock(lck: &bridge_list_mtx); |
1619 | LIST_FOREACH(sc2, &bridge_list, sc_list) { |
1620 | if (_ether_cmp(a: sc->sc_defaddr, |
1621 | IF_LLADDR(sc2->sc_ifp)) == 0) { |
1622 | retry = 1; |
1623 | } |
1624 | } |
1625 | lck_mtx_unlock(lck: &bridge_list_mtx); |
1626 | } |
1627 | |
1628 | sc->sc_flags &= ~SCF_MEDIA_ACTIVE; |
1629 | |
1630 | if (BRIDGE_DBGF_ENABLED(BR_DBGF_LIFECYCLE)) { |
1631 | brlog_link(sc); |
1632 | } |
1633 | error = ifnet_attach(interface: ifp, NULL); |
1634 | if (error != 0) { |
1635 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_attach failed %d" , error); |
1636 | goto done; |
1637 | } |
1638 | |
1639 | error = ifnet_set_lladdr_and_type(interface: ifp, lladdr: sc->sc_defaddr, ETHER_ADDR_LEN, |
1640 | IFT_ETHER); |
1641 | if (error != 0) { |
1642 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_set_lladdr_and_type failed %d" , |
1643 | error); |
1644 | goto done; |
1645 | } |
1646 | |
1647 | ifnet_set_offload(interface: ifp, |
1648 | offload: IFNET_CSUM_IP | IFNET_CSUM_TCP | IFNET_CSUM_UDP | |
1649 | IFNET_CSUM_TCPIPV6 | IFNET_CSUM_UDPIPV6 | IFNET_MULTIPAGES); |
1650 | error = bridge_set_tso(sc); |
1651 | if (error != 0) { |
1652 | BRIDGE_LOG(LOG_NOTICE, 0, "bridge_set_tso failed %d" , error); |
1653 | goto done; |
1654 | } |
1655 | #if BRIDGESTP |
1656 | bstp_attach(&sc->sc_stp, &bridge_ops); |
1657 | #endif /* BRIDGESTP */ |
1658 | |
1659 | lck_mtx_lock(lck: &bridge_list_mtx); |
1660 | LIST_INSERT_HEAD(&bridge_list, sc, sc_list); |
1661 | lck_mtx_unlock(lck: &bridge_list_mtx); |
1662 | |
1663 | /* attach as ethernet */ |
1664 | error = bpf_attach(interface: ifp, DLT_EN10MB, header_length: sizeof(struct ether_header), |
1665 | NULL, NULL); |
1666 | |
1667 | done: |
1668 | if (error != 0) { |
1669 | BRIDGE_LOG(LOG_NOTICE, 0, "failed error %d" , error); |
1670 | /* TBD: Clean up: sc, sc_rthash etc */ |
1671 | } |
1672 | |
1673 | return error; |
1674 | } |
1675 | |
1676 | /* |
1677 | * bridge_clone_destroy: |
1678 | * |
1679 | * Destroy a bridge instance. |
1680 | */ |
1681 | static int |
1682 | bridge_clone_destroy(struct ifnet *ifp) |
1683 | { |
1684 | struct bridge_softc *sc = ifp->if_softc; |
1685 | struct bridge_iflist *bif; |
1686 | errno_t error; |
1687 | |
1688 | BRIDGE_LOCK(sc); |
1689 | if ((sc->sc_flags & SCF_DETACHING)) { |
1690 | BRIDGE_UNLOCK(sc); |
1691 | return 0; |
1692 | } |
1693 | sc->sc_flags |= SCF_DETACHING; |
1694 | |
1695 | bridge_ifstop(ifp, 1); |
1696 | |
1697 | bridge_cancel_delayed_call(&sc->sc_resize_call); |
1698 | |
1699 | bridge_cleanup_delayed_call(&sc->sc_resize_call); |
1700 | bridge_cleanup_delayed_call(&sc->sc_aging_timer); |
1701 | |
1702 | error = ifnet_set_flags(interface: ifp, new_flags: 0, IFF_UP); |
1703 | if (error != 0) { |
1704 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_set_flags failed %d" , error); |
1705 | } |
1706 | |
1707 | while ((bif = TAILQ_FIRST(&sc->sc_iflist)) != NULL) { |
1708 | bridge_delete_member(sc, bif); |
1709 | } |
1710 | |
1711 | while ((bif = TAILQ_FIRST(&sc->sc_spanlist)) != NULL) { |
1712 | bridge_delete_span(sc, bif); |
1713 | } |
1714 | BRIDGE_UNLOCK(sc); |
1715 | |
1716 | error = ifnet_detach(interface: ifp); |
1717 | if (error != 0) { |
1718 | panic("%s (%d): ifnet_detach(%p) failed %d" , |
1719 | __func__, __LINE__, ifp, error); |
1720 | } |
1721 | return 0; |
1722 | } |
1723 | |
1724 | #define DRVSPEC do { \ |
1725 | if (ifd->ifd_cmd >= bridge_control_table_size) { \ |
1726 | error = EINVAL; \ |
1727 | break; \ |
1728 | } \ |
1729 | bc = &bridge_control_table[ifd->ifd_cmd]; \ |
1730 | \ |
1731 | if (cmd == SIOCGDRVSPEC && \ |
1732 | (bc->bc_flags & BC_F_COPYOUT) == 0) { \ |
1733 | error = EINVAL; \ |
1734 | break; \ |
1735 | } else if (cmd == SIOCSDRVSPEC && \ |
1736 | (bc->bc_flags & BC_F_COPYOUT) != 0) { \ |
1737 | error = EINVAL; \ |
1738 | break; \ |
1739 | } \ |
1740 | \ |
1741 | if (bc->bc_flags & BC_F_SUSER) { \ |
1742 | error = kauth_authorize_generic(kauth_cred_get(), \ |
1743 | KAUTH_GENERIC_ISSUSER); \ |
1744 | if (error) \ |
1745 | break; \ |
1746 | } \ |
1747 | \ |
1748 | if (ifd->ifd_len != bc->bc_argsize || \ |
1749 | ifd->ifd_len > sizeof (args)) { \ |
1750 | error = EINVAL; \ |
1751 | break; \ |
1752 | } \ |
1753 | \ |
1754 | bzero(&args, sizeof (args)); \ |
1755 | if (bc->bc_flags & BC_F_COPYIN) { \ |
1756 | error = copyin(ifd->ifd_data, &args, ifd->ifd_len); \ |
1757 | if (error) \ |
1758 | break; \ |
1759 | } \ |
1760 | \ |
1761 | BRIDGE_LOCK(sc); \ |
1762 | error = (*bc->bc_func)(sc, &args); \ |
1763 | BRIDGE_UNLOCK(sc); \ |
1764 | if (error) \ |
1765 | break; \ |
1766 | \ |
1767 | if (bc->bc_flags & BC_F_COPYOUT) \ |
1768 | error = copyout(&args, ifd->ifd_data, ifd->ifd_len); \ |
1769 | } while (0) |
1770 | |
1771 | static boolean_t |
1772 | interface_needs_input_broadcast(struct ifnet * ifp) |
1773 | { |
1774 | /* |
1775 | * Selectively enable input broadcast only when necessary. |
1776 | * The bridge interface itself attaches a fake protocol |
1777 | * so checking for at least two protocols means that the |
1778 | * interface is being used for something besides bridging |
1779 | * and needs to see broadcast packets from other members. |
1780 | */ |
1781 | return if_get_protolist(ifp, NULL, count: 0) >= 2; |
1782 | } |
1783 | |
1784 | static boolean_t |
1785 | bif_set_input_broadcast(struct bridge_iflist * bif, boolean_t input_broadcast) |
1786 | { |
1787 | boolean_t old_input_broadcast; |
1788 | |
1789 | old_input_broadcast = (bif->bif_flags & BIFF_INPUT_BROADCAST) != 0; |
1790 | if (input_broadcast) { |
1791 | bif->bif_flags |= BIFF_INPUT_BROADCAST; |
1792 | } else { |
1793 | bif->bif_flags &= ~BIFF_INPUT_BROADCAST; |
1794 | } |
1795 | return old_input_broadcast != input_broadcast; |
1796 | } |
1797 | |
1798 | /* |
1799 | * bridge_ioctl: |
1800 | * |
1801 | * Handle a control request from the operator. |
1802 | */ |
1803 | static errno_t |
1804 | bridge_ioctl(struct ifnet *ifp, u_long cmd, void *data) |
1805 | { |
1806 | struct bridge_softc *sc = ifp->if_softc; |
1807 | struct ifreq *ifr = (struct ifreq *)data; |
1808 | struct bridge_iflist *bif; |
1809 | int error = 0; |
1810 | |
1811 | BRIDGE_LOCK_ASSERT_NOTHELD(sc); |
1812 | |
1813 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_IOCTL, |
1814 | "ifp %s cmd 0x%08lx (%c%c [%lu] %c %lu)" , |
1815 | ifp->if_xname, cmd, (cmd & IOC_IN) ? 'I' : ' ', |
1816 | (cmd & IOC_OUT) ? 'O' : ' ', IOCPARM_LEN(cmd), |
1817 | (char)IOCGROUP(cmd), cmd & 0xff); |
1818 | |
1819 | switch (cmd) { |
1820 | case SIOCSIFADDR: |
1821 | case SIOCAIFADDR: |
1822 | ifnet_set_flags(interface: ifp, IFF_UP, IFF_UP); |
1823 | break; |
1824 | |
1825 | case SIOCGIFMEDIA32: |
1826 | case SIOCGIFMEDIA64: { |
1827 | struct ifmediareq *ifmr = (struct ifmediareq *)data; |
1828 | user_addr_t user_addr; |
1829 | |
1830 | user_addr = (cmd == SIOCGIFMEDIA64) ? |
1831 | ((struct ifmediareq64 *)ifmr)->ifmu_ulist : |
1832 | CAST_USER_ADDR_T(((struct ifmediareq32 *)ifmr)->ifmu_ulist); |
1833 | |
1834 | ifmr->ifm_status = IFM_AVALID; |
1835 | ifmr->ifm_mask = 0; |
1836 | ifmr->ifm_count = 1; |
1837 | |
1838 | BRIDGE_LOCK(sc); |
1839 | if (!(sc->sc_flags & SCF_DETACHING) && |
1840 | (sc->sc_flags & SCF_MEDIA_ACTIVE)) { |
1841 | ifmr->ifm_status |= IFM_ACTIVE; |
1842 | ifmr->ifm_active = ifmr->ifm_current = |
1843 | IFM_ETHER | IFM_AUTO; |
1844 | } else { |
1845 | ifmr->ifm_active = ifmr->ifm_current = IFM_NONE; |
1846 | } |
1847 | BRIDGE_UNLOCK(sc); |
1848 | |
1849 | if (user_addr != USER_ADDR_NULL) { |
1850 | error = copyout(&ifmr->ifm_current, user_addr, |
1851 | sizeof(int)); |
1852 | } |
1853 | break; |
1854 | } |
1855 | |
1856 | case SIOCADDMULTI: |
1857 | case SIOCDELMULTI: |
1858 | break; |
1859 | |
1860 | case SIOCSDRVSPEC32: |
1861 | case SIOCGDRVSPEC32: { |
1862 | union { |
1863 | struct ifbreq ifbreq; |
1864 | struct ifbifconf32 ifbifconf; |
1865 | struct ifbareq32 ifbareq; |
1866 | struct ifbaconf32 ifbaconf; |
1867 | struct ifbrparam ifbrparam; |
1868 | struct ifbropreq32 ifbropreq; |
1869 | } args; |
1870 | struct ifdrv32 *ifd = (struct ifdrv32 *)data; |
1871 | const struct bridge_control *bridge_control_table = |
1872 | bridge_control_table32, *bc; |
1873 | |
1874 | DRVSPEC; |
1875 | |
1876 | break; |
1877 | } |
1878 | case SIOCSDRVSPEC64: |
1879 | case SIOCGDRVSPEC64: { |
1880 | union { |
1881 | struct ifbreq ifbreq; |
1882 | struct ifbifconf64 ifbifconf; |
1883 | struct ifbareq64 ifbareq; |
1884 | struct ifbaconf64 ifbaconf; |
1885 | struct ifbrparam ifbrparam; |
1886 | struct ifbropreq64 ifbropreq; |
1887 | } args; |
1888 | struct ifdrv64 *ifd = (struct ifdrv64 *)data; |
1889 | const struct bridge_control *bridge_control_table = |
1890 | bridge_control_table64, *bc; |
1891 | |
1892 | DRVSPEC; |
1893 | |
1894 | break; |
1895 | } |
1896 | |
1897 | case SIOCSIFFLAGS: |
1898 | if (!(ifp->if_flags & IFF_UP) && |
1899 | (ifp->if_flags & IFF_RUNNING)) { |
1900 | /* |
1901 | * If interface is marked down and it is running, |
1902 | * then stop and disable it. |
1903 | */ |
1904 | BRIDGE_LOCK(sc); |
1905 | bridge_ifstop(ifp, 1); |
1906 | BRIDGE_UNLOCK(sc); |
1907 | } else if ((ifp->if_flags & IFF_UP) && |
1908 | !(ifp->if_flags & IFF_RUNNING)) { |
1909 | /* |
1910 | * If interface is marked up and it is stopped, then |
1911 | * start it. |
1912 | */ |
1913 | BRIDGE_LOCK(sc); |
1914 | error = bridge_init(ifp); |
1915 | BRIDGE_UNLOCK(sc); |
1916 | } |
1917 | break; |
1918 | |
1919 | case SIOCSIFLLADDR: |
1920 | error = ifnet_set_lladdr(interface: ifp, lladdr: ifr->ifr_addr.sa_data, |
1921 | lladdr_len: ifr->ifr_addr.sa_len); |
1922 | if (error != 0) { |
1923 | BRIDGE_LOG(LOG_NOTICE, BR_DBGF_IOCTL, |
1924 | "%s SIOCSIFLLADDR error %d" , ifp->if_xname, |
1925 | error); |
1926 | } |
1927 | break; |
1928 | |
1929 | case SIOCSIFMTU: |
1930 | if (ifr->ifr_mtu < 576) { |
1931 | error = EINVAL; |
1932 | break; |
1933 | } |
1934 | BRIDGE_LOCK(sc); |
1935 | if (TAILQ_EMPTY(&sc->sc_iflist)) { |
1936 | sc->sc_ifp->if_mtu = ifr->ifr_mtu; |
1937 | BRIDGE_UNLOCK(sc); |
1938 | break; |
1939 | } |
1940 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) { |
1941 | if (bif->bif_ifp->if_mtu != (unsigned)ifr->ifr_mtu) { |
1942 | BRIDGE_LOG(LOG_NOTICE, 0, |
1943 | "%s invalid MTU: %u(%s) != %d" , |
1944 | sc->sc_ifp->if_xname, |
1945 | bif->bif_ifp->if_mtu, |
1946 | bif->bif_ifp->if_xname, ifr->ifr_mtu); |
1947 | error = EINVAL; |
1948 | break; |
1949 | } |
1950 | } |
1951 | if (!error) { |
1952 | sc->sc_ifp->if_mtu = ifr->ifr_mtu; |
1953 | } |
1954 | BRIDGE_UNLOCK(sc); |
1955 | break; |
1956 | |
1957 | default: |
1958 | error = ether_ioctl(interface: ifp, command: cmd, data); |
1959 | if (error != 0 && error != EOPNOTSUPP) { |
1960 | BRIDGE_LOG(LOG_NOTICE, BR_DBGF_IOCTL, |
1961 | "ifp %s cmd 0x%08lx " |
1962 | "(%c%c [%lu] %c %lu) failed error: %d" , |
1963 | ifp->if_xname, cmd, |
1964 | (cmd & IOC_IN) ? 'I' : ' ', |
1965 | (cmd & IOC_OUT) ? 'O' : ' ', |
1966 | IOCPARM_LEN(cmd), (char)IOCGROUP(cmd), |
1967 | cmd & 0xff, error); |
1968 | } |
1969 | break; |
1970 | } |
1971 | BRIDGE_LOCK_ASSERT_NOTHELD(sc); |
1972 | |
1973 | return error; |
1974 | } |
1975 | |
1976 | #if HAS_IF_CAP |
1977 | /* |
1978 | * bridge_mutecaps: |
1979 | * |
1980 | * Clear or restore unwanted capabilities on the member interface |
1981 | */ |
1982 | static void |
1983 | bridge_mutecaps(struct bridge_softc *sc) |
1984 | { |
1985 | struct bridge_iflist *bif; |
1986 | int enabled, mask; |
1987 | |
1988 | /* Initial bitmask of capabilities to test */ |
1989 | mask = BRIDGE_IFCAPS_MASK; |
1990 | |
1991 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) { |
1992 | /* Every member must support it or its disabled */ |
1993 | mask &= bif->bif_savedcaps; |
1994 | } |
1995 | |
1996 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) { |
1997 | enabled = bif->bif_ifp->if_capenable; |
1998 | enabled &= ~BRIDGE_IFCAPS_STRIP; |
1999 | /* strip off mask bits and enable them again if allowed */ |
2000 | enabled &= ~BRIDGE_IFCAPS_MASK; |
2001 | enabled |= mask; |
2002 | |
2003 | bridge_set_ifcap(sc, bif, enabled); |
2004 | } |
2005 | } |
2006 | |
2007 | static void |
2008 | bridge_set_ifcap(struct bridge_softc *sc, struct bridge_iflist *bif, int set) |
2009 | { |
2010 | struct ifnet *ifp = bif->bif_ifp; |
2011 | struct ifreq ifr; |
2012 | int error; |
2013 | |
2014 | bzero(&ifr, sizeof(ifr)); |
2015 | ifr.ifr_reqcap = set; |
2016 | |
2017 | if (ifp->if_capenable != set) { |
2018 | IFF_LOCKGIANT(ifp); |
2019 | error = (*ifp->if_ioctl)(ifp, SIOCSIFCAP, (caddr_t)&ifr); |
2020 | IFF_UNLOCKGIANT(ifp); |
2021 | if (error) { |
2022 | BRIDGE_LOG(LOG_NOTICE, 0, |
2023 | "%s error setting interface capabilities on %s" , |
2024 | sc->sc_ifp->if_xname, ifp->if_xname); |
2025 | } |
2026 | } |
2027 | } |
2028 | #endif /* HAS_IF_CAP */ |
2029 | |
2030 | static errno_t |
2031 | siocsifcap(struct ifnet * ifp, uint32_t cap_enable) |
2032 | { |
2033 | struct ifreq ifr; |
2034 | |
2035 | bzero(s: &ifr, n: sizeof(ifr)); |
2036 | ifr.ifr_reqcap = cap_enable; |
2037 | return ifnet_ioctl(interface: ifp, protocol: 0, SIOCSIFCAP, ioctl_arg: &ifr); |
2038 | } |
2039 | |
2040 | static const char * |
2041 | enable_disable_str(boolean_t enable) |
2042 | { |
2043 | return enable ? "enable" : "disable" ; |
2044 | } |
2045 | |
2046 | static boolean_t |
2047 | bridge_set_lro(struct ifnet * ifp, boolean_t enable) |
2048 | { |
2049 | uint32_t cap_enable; |
2050 | uint32_t cap_supported; |
2051 | boolean_t changed = FALSE; |
2052 | boolean_t lro_enabled; |
2053 | |
2054 | cap_supported = ifnet_capabilities_supported(interface: ifp); |
2055 | if ((cap_supported & IFCAP_LRO) == 0) { |
2056 | BRIDGE_LOG(LOG_NOTICE, BR_DBGF_LIFECYCLE, |
2057 | "%s doesn't support LRO" , |
2058 | ifp->if_xname); |
2059 | goto done; |
2060 | } |
2061 | cap_enable = ifnet_capabilities_enabled(interface: ifp); |
2062 | lro_enabled = (cap_enable & IFCAP_LRO) != 0; |
2063 | if (lro_enabled != enable) { |
2064 | errno_t error; |
2065 | |
2066 | if (enable) { |
2067 | cap_enable |= IFCAP_LRO; |
2068 | } else { |
2069 | cap_enable &= ~IFCAP_LRO; |
2070 | } |
2071 | error = siocsifcap(ifp, cap_enable); |
2072 | if (error != 0) { |
2073 | BRIDGE_LOG(LOG_NOTICE, 0, |
2074 | "%s %s failed (cap 0x%x) %d" , |
2075 | ifp->if_xname, |
2076 | enable_disable_str(enable), |
2077 | cap_enable, |
2078 | error); |
2079 | } else { |
2080 | changed = TRUE; |
2081 | BRIDGE_LOG(LOG_NOTICE, BR_DBGF_LIFECYCLE, |
2082 | "%s %s success (cap 0x%x)" , |
2083 | ifp->if_xname, |
2084 | enable_disable_str(enable), |
2085 | cap_enable); |
2086 | } |
2087 | } |
2088 | done: |
2089 | return changed; |
2090 | } |
2091 | |
2092 | static errno_t |
2093 | bridge_set_tso(struct bridge_softc *sc) |
2094 | { |
2095 | struct bridge_iflist *bif; |
2096 | u_int32_t tso_v4_mtu; |
2097 | u_int32_t tso_v6_mtu; |
2098 | ifnet_offload_t offload; |
2099 | errno_t error = 0; |
2100 | |
2101 | /* By default, support TSO */ |
2102 | offload = sc->sc_ifp->if_hwassist | IFNET_TSO_IPV4 | IFNET_TSO_IPV6; |
2103 | tso_v4_mtu = IP_MAXPACKET; |
2104 | tso_v6_mtu = IP_MAXPACKET; |
2105 | |
2106 | /* Use the lowest common denominator of the members */ |
2107 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) { |
2108 | ifnet_t ifp = bif->bif_ifp; |
2109 | |
2110 | if (ifp == NULL) { |
2111 | continue; |
2112 | } |
2113 | |
2114 | if (offload & IFNET_TSO_IPV4) { |
2115 | if (ifp->if_hwassist & IFNET_TSO_IPV4) { |
2116 | if (tso_v4_mtu > ifp->if_tso_v4_mtu) { |
2117 | tso_v4_mtu = ifp->if_tso_v4_mtu; |
2118 | } |
2119 | } else { |
2120 | offload &= ~IFNET_TSO_IPV4; |
2121 | tso_v4_mtu = 0; |
2122 | } |
2123 | } |
2124 | if (offload & IFNET_TSO_IPV6) { |
2125 | if (ifp->if_hwassist & IFNET_TSO_IPV6) { |
2126 | if (tso_v6_mtu > ifp->if_tso_v6_mtu) { |
2127 | tso_v6_mtu = ifp->if_tso_v6_mtu; |
2128 | } |
2129 | } else { |
2130 | offload &= ~IFNET_TSO_IPV6; |
2131 | tso_v6_mtu = 0; |
2132 | } |
2133 | } |
2134 | } |
2135 | |
2136 | if (offload != sc->sc_ifp->if_hwassist) { |
2137 | error = ifnet_set_offload(interface: sc->sc_ifp, offload); |
2138 | if (error != 0) { |
2139 | BRIDGE_LOG(LOG_NOTICE, BR_DBGF_LIFECYCLE, |
2140 | "ifnet_set_offload(%s, 0x%x) failed %d" , |
2141 | sc->sc_ifp->if_xname, offload, error); |
2142 | goto done; |
2143 | } |
2144 | /* |
2145 | * For ifnet_set_tso_mtu() sake, the TSO MTU must be at least |
2146 | * as large as the interface MTU |
2147 | */ |
2148 | if (sc->sc_ifp->if_hwassist & IFNET_TSO_IPV4) { |
2149 | if (tso_v4_mtu < sc->sc_ifp->if_mtu) { |
2150 | tso_v4_mtu = sc->sc_ifp->if_mtu; |
2151 | } |
2152 | error = ifnet_set_tso_mtu(interface: sc->sc_ifp, AF_INET, |
2153 | mtuLen: tso_v4_mtu); |
2154 | if (error != 0) { |
2155 | BRIDGE_LOG(LOG_NOTICE, BR_DBGF_LIFECYCLE, |
2156 | "ifnet_set_tso_mtu(%s, " |
2157 | "AF_INET, %u) failed %d" , |
2158 | sc->sc_ifp->if_xname, |
2159 | tso_v4_mtu, error); |
2160 | goto done; |
2161 | } |
2162 | } |
2163 | if (sc->sc_ifp->if_hwassist & IFNET_TSO_IPV6) { |
2164 | if (tso_v6_mtu < sc->sc_ifp->if_mtu) { |
2165 | tso_v6_mtu = sc->sc_ifp->if_mtu; |
2166 | } |
2167 | error = ifnet_set_tso_mtu(interface: sc->sc_ifp, AF_INET6, |
2168 | mtuLen: tso_v6_mtu); |
2169 | if (error != 0) { |
2170 | BRIDGE_LOG(LOG_NOTICE, BR_DBGF_LIFECYCLE, |
2171 | "ifnet_set_tso_mtu(%s, " |
2172 | "AF_INET6, %u) failed %d" , |
2173 | sc->sc_ifp->if_xname, |
2174 | tso_v6_mtu, error); |
2175 | goto done; |
2176 | } |
2177 | } |
2178 | } |
2179 | done: |
2180 | return error; |
2181 | } |
2182 | |
2183 | /* |
2184 | * bridge_lookup_member: |
2185 | * |
2186 | * Lookup a bridge member interface. |
2187 | */ |
2188 | static struct bridge_iflist * |
2189 | bridge_lookup_member(struct bridge_softc *sc, const char *name) |
2190 | { |
2191 | struct bridge_iflist *bif; |
2192 | struct ifnet *ifp; |
2193 | |
2194 | BRIDGE_LOCK_ASSERT_HELD(sc); |
2195 | |
2196 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) { |
2197 | ifp = bif->bif_ifp; |
2198 | if (strcmp(s1: ifp->if_xname, s2: name) == 0) { |
2199 | return bif; |
2200 | } |
2201 | } |
2202 | |
2203 | return NULL; |
2204 | } |
2205 | |
2206 | /* |
2207 | * bridge_lookup_member_if: |
2208 | * |
2209 | * Lookup a bridge member interface by ifnet*. |
2210 | */ |
2211 | static struct bridge_iflist * |
2212 | bridge_lookup_member_if(struct bridge_softc *sc, struct ifnet *member_ifp) |
2213 | { |
2214 | struct bridge_iflist *bif; |
2215 | |
2216 | BRIDGE_LOCK_ASSERT_HELD(sc); |
2217 | |
2218 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) { |
2219 | if (bif->bif_ifp == member_ifp) { |
2220 | return bif; |
2221 | } |
2222 | } |
2223 | |
2224 | return NULL; |
2225 | } |
2226 | |
2227 | static errno_t |
2228 | bridge_iff_input(void *cookie, ifnet_t ifp, protocol_family_t protocol, |
2229 | mbuf_t *data, char **frame_ptr) |
2230 | { |
2231 | #pragma unused(protocol) |
2232 | errno_t error = 0; |
2233 | struct bridge_iflist *bif = (struct bridge_iflist *)cookie; |
2234 | struct bridge_softc *sc = bif->bif_sc; |
2235 | int included = 0; |
2236 | size_t frmlen = 0; |
2237 | mbuf_t m = *data; |
2238 | |
2239 | if ((m->m_flags & M_PROTO1)) { |
2240 | goto out; |
2241 | } |
2242 | |
2243 | if (*frame_ptr >= (char *)mbuf_datastart(mbuf: m) && |
2244 | *frame_ptr <= (char *)mbuf_data(mbuf: m)) { |
2245 | included = 1; |
2246 | frmlen = (char *)mbuf_data(mbuf: m) - *frame_ptr; |
2247 | } |
2248 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_INPUT, |
2249 | "%s from %s m 0x%llx data 0x%llx frame 0x%llx %s " |
2250 | "frmlen %lu" , sc->sc_ifp->if_xname, |
2251 | ifp->if_xname, (uint64_t)VM_KERNEL_ADDRPERM(m), |
2252 | (uint64_t)VM_KERNEL_ADDRPERM(mbuf_data(m)), |
2253 | (uint64_t)VM_KERNEL_ADDRPERM(*frame_ptr), |
2254 | included ? "inside" : "outside" , frmlen); |
2255 | if (BRIDGE_DBGF_ENABLED(BR_DBGF_MBUF)) { |
2256 | brlog_mbuf(m, prefix: "bridge_iff_input[" , suffix: "" ); |
2257 | brlog_ether_header(eh: (struct ether_header *) |
2258 | (void *)*frame_ptr); |
2259 | brlog_mbuf_data(m, offset: 0, len: 20); |
2260 | } |
2261 | if (included == 0) { |
2262 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_INPUT, "frame_ptr outside mbuf" ); |
2263 | goto out; |
2264 | } |
2265 | |
2266 | /* Move data pointer to start of frame to the link layer header */ |
2267 | (void) mbuf_setdata(mbuf: m, data: (char *)mbuf_data(mbuf: m) - frmlen, |
2268 | len: mbuf_len(mbuf: m) + frmlen); |
2269 | (void) mbuf_pkthdr_adjustlen(mbuf: m, amount: frmlen); |
2270 | |
2271 | /* make sure we can access the ethernet header */ |
2272 | if (mbuf_pkthdr_len(mbuf: m) < sizeof(struct ether_header)) { |
2273 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_INPUT, |
2274 | "short frame %lu < %lu" , |
2275 | mbuf_pkthdr_len(m), sizeof(struct ether_header)); |
2276 | goto out; |
2277 | } |
2278 | if (mbuf_len(mbuf: m) < sizeof(struct ether_header)) { |
2279 | error = mbuf_pullup(mbuf: data, len: sizeof(struct ether_header)); |
2280 | if (error != 0) { |
2281 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_INPUT, |
2282 | "mbuf_pullup(%lu) failed %d" , |
2283 | sizeof(struct ether_header), |
2284 | error); |
2285 | error = EJUSTRETURN; |
2286 | goto out; |
2287 | } |
2288 | if (m != *data) { |
2289 | m = *data; |
2290 | *frame_ptr = mbuf_data(mbuf: m); |
2291 | } |
2292 | } |
2293 | |
2294 | error = bridge_input(ifp, data); |
2295 | |
2296 | /* Adjust packet back to original */ |
2297 | if (error == 0) { |
2298 | /* bridge_input might have modified *data */ |
2299 | if (*data != m) { |
2300 | m = *data; |
2301 | *frame_ptr = mbuf_data(mbuf: m); |
2302 | } |
2303 | (void) mbuf_setdata(mbuf: m, data: (char *)mbuf_data(mbuf: m) + frmlen, |
2304 | len: mbuf_len(mbuf: m) - frmlen); |
2305 | (void) mbuf_pkthdr_adjustlen(mbuf: m, amount: -frmlen); |
2306 | } |
2307 | |
2308 | if (BRIDGE_DBGF_ENABLED(BR_DBGF_MBUF) && |
2309 | BRIDGE_DBGF_ENABLED(BR_DBGF_INPUT)) { |
2310 | brlog_mbuf(m, prefix: "bridge_iff_input]" , suffix: "" ); |
2311 | } |
2312 | |
2313 | out: |
2314 | BRIDGE_LOCK_ASSERT_NOTHELD(sc); |
2315 | |
2316 | return error; |
2317 | } |
2318 | |
2319 | static errno_t |
2320 | bridge_iff_output(void *cookie, ifnet_t ifp, protocol_family_t protocol, |
2321 | mbuf_t *data) |
2322 | { |
2323 | #pragma unused(protocol) |
2324 | errno_t error = 0; |
2325 | struct bridge_iflist *bif = (struct bridge_iflist *)cookie; |
2326 | struct bridge_softc *sc = bif->bif_sc; |
2327 | mbuf_t m = *data; |
2328 | |
2329 | if ((m->m_flags & M_PROTO1)) { |
2330 | goto out; |
2331 | } |
2332 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_OUTPUT, |
2333 | "%s from %s m 0x%llx data 0x%llx" , |
2334 | sc->sc_ifp->if_xname, ifp->if_xname, |
2335 | (uint64_t)VM_KERNEL_ADDRPERM(m), |
2336 | (uint64_t)VM_KERNEL_ADDRPERM(mbuf_data(m))); |
2337 | |
2338 | error = bridge_member_output(sc, ifp, m: data); |
2339 | if (error != 0 && error != EJUSTRETURN) { |
2340 | BRIDGE_LOG(LOG_NOTICE, BR_DBGF_OUTPUT, |
2341 | "bridge_member_output failed error %d" , |
2342 | error); |
2343 | } |
2344 | out: |
2345 | BRIDGE_LOCK_ASSERT_NOTHELD(sc); |
2346 | |
2347 | return error; |
2348 | } |
2349 | |
2350 | static void |
2351 | bridge_iff_event(void *cookie, ifnet_t ifp, protocol_family_t protocol, |
2352 | const struct kev_msg *event_msg) |
2353 | { |
2354 | #pragma unused(protocol) |
2355 | struct bridge_iflist *bif = (struct bridge_iflist *)cookie; |
2356 | struct bridge_softc *sc = bif->bif_sc; |
2357 | |
2358 | if (event_msg->vendor_code == KEV_VENDOR_APPLE && |
2359 | event_msg->kev_class == KEV_NETWORK_CLASS && |
2360 | event_msg->kev_subclass == KEV_DL_SUBCLASS) { |
2361 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_LIFECYCLE, |
2362 | "%s event_code %u - %s" , |
2363 | ifp->if_xname, event_msg->event_code, |
2364 | dlil_kev_dl_code_str(event_msg->event_code)); |
2365 | |
2366 | switch (event_msg->event_code) { |
2367 | case KEV_DL_LINK_OFF: |
2368 | case KEV_DL_LINK_ON: { |
2369 | bridge_iflinkevent(ifp); |
2370 | #if BRIDGESTP |
2371 | bstp_linkstate(ifp, event_msg->event_code); |
2372 | #endif /* BRIDGESTP */ |
2373 | break; |
2374 | } |
2375 | case KEV_DL_SIFFLAGS: { |
2376 | if ((ifp->if_flags & IFF_UP) == 0) { |
2377 | break; |
2378 | } |
2379 | if ((bif->bif_flags & BIFF_PROMISC) == 0) { |
2380 | errno_t error; |
2381 | |
2382 | error = ifnet_set_promiscuous(interface: ifp, on: 1); |
2383 | if (error != 0) { |
2384 | BRIDGE_LOG(LOG_NOTICE, 0, |
2385 | "ifnet_set_promiscuous (%s)" |
2386 | " failed %d" , ifp->if_xname, |
2387 | error); |
2388 | } else { |
2389 | bif->bif_flags |= BIFF_PROMISC; |
2390 | } |
2391 | } |
2392 | if ((bif->bif_flags & BIFF_WIFI_INFRA) != 0 && |
2393 | (bif->bif_flags & BIFF_ALL_MULTI) == 0) { |
2394 | errno_t error; |
2395 | |
2396 | error = if_allmulti(ifp, 1); |
2397 | if (error != 0) { |
2398 | BRIDGE_LOG(LOG_NOTICE, 0, |
2399 | "if_allmulti (%s)" |
2400 | " failed %d" , ifp->if_xname, |
2401 | error); |
2402 | } else { |
2403 | bif->bif_flags |= BIFF_ALL_MULTI; |
2404 | #ifdef XNU_PLATFORM_AppleTVOS |
2405 | ip6_forwarding = 1; |
2406 | #endif /* XNU_PLATFORM_AppleTVOS */ |
2407 | } |
2408 | } |
2409 | break; |
2410 | } |
2411 | case KEV_DL_IFCAP_CHANGED: { |
2412 | BRIDGE_LOCK(sc); |
2413 | bridge_set_tso(sc); |
2414 | BRIDGE_UNLOCK(sc); |
2415 | break; |
2416 | } |
2417 | case KEV_DL_PROTO_DETACHED: |
2418 | case KEV_DL_PROTO_ATTACHED: { |
2419 | bridge_proto_attach_changed(ifp); |
2420 | break; |
2421 | } |
2422 | default: |
2423 | break; |
2424 | } |
2425 | } |
2426 | } |
2427 | |
2428 | /* |
2429 | * bridge_iff_detached: |
2430 | * |
2431 | * Called when our interface filter has been detached from a |
2432 | * member interface. |
2433 | */ |
2434 | static void |
2435 | bridge_iff_detached(void *cookie, ifnet_t ifp) |
2436 | { |
2437 | #pragma unused(cookie) |
2438 | struct bridge_iflist *bif; |
2439 | struct bridge_softc *sc = ifp->if_bridge; |
2440 | |
2441 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_LIFECYCLE, "%s" , ifp->if_xname); |
2442 | |
2443 | /* Check if the interface is a bridge member */ |
2444 | if (sc != NULL) { |
2445 | BRIDGE_LOCK(sc); |
2446 | bif = bridge_lookup_member_if(sc, member_ifp: ifp); |
2447 | if (bif != NULL) { |
2448 | bridge_delete_member(sc, bif); |
2449 | } |
2450 | BRIDGE_UNLOCK(sc); |
2451 | return; |
2452 | } |
2453 | /* Check if the interface is a span port */ |
2454 | lck_mtx_lock(lck: &bridge_list_mtx); |
2455 | LIST_FOREACH(sc, &bridge_list, sc_list) { |
2456 | BRIDGE_LOCK(sc); |
2457 | TAILQ_FOREACH(bif, &sc->sc_spanlist, bif_next) |
2458 | if (ifp == bif->bif_ifp) { |
2459 | bridge_delete_span(sc, bif); |
2460 | break; |
2461 | } |
2462 | BRIDGE_UNLOCK(sc); |
2463 | } |
2464 | lck_mtx_unlock(lck: &bridge_list_mtx); |
2465 | } |
2466 | |
2467 | static errno_t |
2468 | bridge_proto_input(ifnet_t ifp, protocol_family_t protocol, mbuf_t packet, |
2469 | char *) |
2470 | { |
2471 | #pragma unused(protocol, packet, header) |
2472 | BRIDGE_LOG(LOG_NOTICE, 0, "%s unexpected packet" , |
2473 | ifp->if_xname); |
2474 | return 0; |
2475 | } |
2476 | |
2477 | static int |
2478 | bridge_attach_protocol(struct ifnet *ifp) |
2479 | { |
2480 | int error; |
2481 | struct ifnet_attach_proto_param reg; |
2482 | |
2483 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_LIFECYCLE, "%s" , ifp->if_xname); |
2484 | bzero(s: ®, n: sizeof(reg)); |
2485 | reg.input = bridge_proto_input; |
2486 | |
2487 | error = ifnet_attach_protocol(interface: ifp, PF_BRIDGE, proto_details: ®); |
2488 | if (error) { |
2489 | BRIDGE_LOG(LOG_NOTICE, 0, |
2490 | "ifnet_attach_protocol(%s) failed, %d" , |
2491 | ifp->if_xname, error); |
2492 | } |
2493 | |
2494 | return error; |
2495 | } |
2496 | |
2497 | static int |
2498 | bridge_detach_protocol(struct ifnet *ifp) |
2499 | { |
2500 | int error; |
2501 | |
2502 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_LIFECYCLE, "%s" , ifp->if_xname); |
2503 | error = ifnet_detach_protocol(interface: ifp, PF_BRIDGE); |
2504 | if (error) { |
2505 | BRIDGE_LOG(LOG_NOTICE, 0, |
2506 | "ifnet_detach_protocol(%s) failed, %d" , |
2507 | ifp->if_xname, error); |
2508 | } |
2509 | |
2510 | return error; |
2511 | } |
2512 | |
2513 | /* |
2514 | * bridge_delete_member: |
2515 | * |
2516 | * Delete the specified member interface. |
2517 | */ |
2518 | static void |
2519 | bridge_delete_member(struct bridge_softc *sc, struct bridge_iflist *bif) |
2520 | { |
2521 | #if SKYWALK |
2522 | boolean_t add_netagent = FALSE; |
2523 | #endif /* SKYWALK */ |
2524 | uint32_t bif_flags; |
2525 | struct ifnet *ifs = bif->bif_ifp, *bifp = sc->sc_ifp; |
2526 | int lladdr_changed = 0, error; |
2527 | uint8_t eaddr[ETHER_ADDR_LEN]; |
2528 | u_int32_t event_code = 0; |
2529 | |
2530 | BRIDGE_LOCK_ASSERT_HELD(sc); |
2531 | VERIFY(ifs != NULL); |
2532 | |
2533 | /* |
2534 | * Remove the member from the list first so it cannot be found anymore |
2535 | * when we release the bridge lock below |
2536 | */ |
2537 | if ((bif->bif_flags & BIFF_IN_MEMBER_LIST) != 0) { |
2538 | BRIDGE_XLOCK(sc); |
2539 | TAILQ_REMOVE(&sc->sc_iflist, bif, bif_next); |
2540 | BRIDGE_XDROP(sc); |
2541 | } |
2542 | if (sc->sc_mac_nat_bif != NULL) { |
2543 | if (bif == sc->sc_mac_nat_bif) { |
2544 | bridge_mac_nat_disable(sc); |
2545 | } else { |
2546 | bridge_mac_nat_flush_entries(sc, bif); |
2547 | } |
2548 | } |
2549 | #if BRIDGESTP |
2550 | if ((bif->bif_ifflags & IFBIF_STP) != 0) { |
2551 | bstp_disable(&bif->bif_stp); |
2552 | } |
2553 | #endif /* BRIDGESTP */ |
2554 | |
2555 | /* |
2556 | * If removing the interface that gave the bridge its mac address, set |
2557 | * the mac address of the bridge to the address of the next member, or |
2558 | * to its default address if no members are left. |
2559 | */ |
2560 | if (bridge_inherit_mac && sc->sc_ifaddr == ifs) { |
2561 | ifnet_release(interface: sc->sc_ifaddr); |
2562 | if (TAILQ_EMPTY(&sc->sc_iflist)) { |
2563 | bcopy(src: sc->sc_defaddr, dst: eaddr, ETHER_ADDR_LEN); |
2564 | sc->sc_ifaddr = NULL; |
2565 | } else { |
2566 | struct ifnet *fif = |
2567 | TAILQ_FIRST(&sc->sc_iflist)->bif_ifp; |
2568 | bcopy(IF_LLADDR(fif), dst: eaddr, ETHER_ADDR_LEN); |
2569 | sc->sc_ifaddr = fif; |
2570 | ifnet_reference(interface: fif); /* for sc_ifaddr */ |
2571 | } |
2572 | lladdr_changed = 1; |
2573 | } |
2574 | |
2575 | #if HAS_IF_CAP |
2576 | bridge_mutecaps(sc); /* recalculate now this interface is removed */ |
2577 | #endif /* HAS_IF_CAP */ |
2578 | |
2579 | error = bridge_set_tso(sc); |
2580 | if (error != 0) { |
2581 | BRIDGE_LOG(LOG_NOTICE, 0, "bridge_set_tso failed %d" , error); |
2582 | } |
2583 | |
2584 | bridge_rtdelete(sc, ifp: ifs, IFBF_FLUSHALL); |
2585 | |
2586 | KASSERT(bif->bif_addrcnt == 0, |
2587 | ("%s: %d bridge routes referenced" , __func__, bif->bif_addrcnt)); |
2588 | |
2589 | /* |
2590 | * Update link status of the bridge based on its remaining members |
2591 | */ |
2592 | event_code = bridge_updatelinkstatus(sc); |
2593 | bif_flags = bif->bif_flags; |
2594 | BRIDGE_UNLOCK(sc); |
2595 | |
2596 | /* only perform these steps if the interface is still attached */ |
2597 | if (ifnet_is_attached(ifs, refio: 1)) { |
2598 | #if SKYWALK |
2599 | add_netagent = (bif_flags & BIFF_NETAGENT_REMOVED) != 0; |
2600 | |
2601 | if ((bif_flags & BIFF_FLOWSWITCH_ATTACHED) != 0) { |
2602 | ifnet_detach_flowswitch_nexus(ifp: ifs); |
2603 | } |
2604 | #endif /* SKYWALK */ |
2605 | /* disable promiscuous mode */ |
2606 | if ((bif_flags & BIFF_PROMISC) != 0) { |
2607 | (void) ifnet_set_promiscuous(interface: ifs, on: 0); |
2608 | } |
2609 | /* disable all multi */ |
2610 | if ((bif_flags & BIFF_ALL_MULTI) != 0) { |
2611 | (void)if_allmulti(ifs, 0); |
2612 | } |
2613 | #if HAS_IF_CAP |
2614 | /* re-enable any interface capabilities */ |
2615 | bridge_set_ifcap(sc, bif, bif->bif_savedcaps); |
2616 | #endif |
2617 | /* detach bridge "protocol" */ |
2618 | if ((bif_flags & BIFF_PROTO_ATTACHED) != 0) { |
2619 | (void)bridge_detach_protocol(ifp: ifs); |
2620 | } |
2621 | /* detach interface filter */ |
2622 | if ((bif_flags & BIFF_FILTER_ATTACHED) != 0) { |
2623 | iflt_detach(filter_ref: bif->bif_iff_ref); |
2624 | } |
2625 | /* re-enable LRO */ |
2626 | if ((bif_flags & BIFF_LRO_DISABLED) != 0) { |
2627 | (void)bridge_set_lro(ifp: ifs, TRUE); |
2628 | } |
2629 | ifnet_decr_iorefcnt(ifs); |
2630 | } |
2631 | |
2632 | if (lladdr_changed && |
2633 | (error = ifnet_set_lladdr(interface: bifp, lladdr: eaddr, ETHER_ADDR_LEN)) != 0) { |
2634 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_set_lladdr failed %d" , error); |
2635 | } |
2636 | |
2637 | if (event_code != 0) { |
2638 | bridge_link_event(bifp, event_code); |
2639 | } |
2640 | |
2641 | #if BRIDGESTP |
2642 | bstp_destroy(&bif->bif_stp); /* prepare to free */ |
2643 | #endif /* BRIDGESTP */ |
2644 | |
2645 | kfree_type(struct bridge_iflist, bif); |
2646 | ifs->if_bridge = NULL; |
2647 | #if SKYWALK |
2648 | if (add_netagent && ifnet_is_attached(ifs, refio: 1)) { |
2649 | (void)ifnet_add_netagent(ifp: ifs); |
2650 | ifnet_decr_iorefcnt(ifs); |
2651 | } |
2652 | #endif /* SKYWALK */ |
2653 | |
2654 | ifnet_release(interface: ifs); |
2655 | |
2656 | BRIDGE_LOCK(sc); |
2657 | } |
2658 | |
2659 | /* |
2660 | * bridge_delete_span: |
2661 | * |
2662 | * Delete the specified span interface. |
2663 | */ |
2664 | static void |
2665 | bridge_delete_span(struct bridge_softc *sc, struct bridge_iflist *bif) |
2666 | { |
2667 | BRIDGE_LOCK_ASSERT_HELD(sc); |
2668 | |
2669 | KASSERT(bif->bif_ifp->if_bridge == NULL, |
2670 | ("%s: not a span interface" , __func__)); |
2671 | |
2672 | ifnet_release(interface: bif->bif_ifp); |
2673 | |
2674 | TAILQ_REMOVE(&sc->sc_spanlist, bif, bif_next); |
2675 | kfree_type(struct bridge_iflist, bif); |
2676 | } |
2677 | |
2678 | static int |
2679 | bridge_ioctl_add(struct bridge_softc *sc, void *arg) |
2680 | { |
2681 | struct ifbreq *req = arg; |
2682 | struct bridge_iflist *bif = NULL; |
2683 | struct ifnet *ifs, *bifp = sc->sc_ifp; |
2684 | int error = 0, lladdr_changed = 0; |
2685 | uint8_t eaddr[ETHER_ADDR_LEN]; |
2686 | struct iff_filter iff; |
2687 | u_int32_t event_code = 0; |
2688 | boolean_t input_broadcast; |
2689 | int media_active; |
2690 | boolean_t wifi_infra = FALSE; |
2691 | |
2692 | ifs = ifunit(req->ifbr_ifsname); |
2693 | if (ifs == NULL) { |
2694 | return ENOENT; |
2695 | } |
2696 | if (ifs->if_ioctl == NULL) { /* must be supported */ |
2697 | return EINVAL; |
2698 | } |
2699 | |
2700 | if (IFNET_IS_INTCOPROC(ifs) || IFNET_IS_MANAGEMENT(ifs)) { |
2701 | return EINVAL; |
2702 | } |
2703 | |
2704 | /* If it's in the span list, it can't be a member. */ |
2705 | TAILQ_FOREACH(bif, &sc->sc_spanlist, bif_next) { |
2706 | if (ifs == bif->bif_ifp) { |
2707 | return EBUSY; |
2708 | } |
2709 | } |
2710 | |
2711 | if (ifs->if_bridge == sc) { |
2712 | return EEXIST; |
2713 | } |
2714 | |
2715 | if (ifs->if_bridge != NULL) { |
2716 | return EBUSY; |
2717 | } |
2718 | |
2719 | switch (ifs->if_type) { |
2720 | case IFT_ETHER: |
2721 | if (strcmp(s1: ifs->if_name, s2: "en" ) == 0 && |
2722 | ifs->if_subfamily == IFNET_SUBFAMILY_WIFI && |
2723 | (ifs->if_eflags & IFEF_IPV4_ROUTER) == 0) { |
2724 | /* XXX is there a better way to identify Wi-Fi STA? */ |
2725 | wifi_infra = TRUE; |
2726 | } |
2727 | break; |
2728 | case IFT_L2VLAN: |
2729 | case IFT_IEEE8023ADLAG: |
2730 | break; |
2731 | case IFT_GIF: |
2732 | /* currently not supported */ |
2733 | /* FALLTHRU */ |
2734 | default: |
2735 | return EINVAL; |
2736 | } |
2737 | |
2738 | /* fail to add the interface if the MTU doesn't match */ |
2739 | if (!TAILQ_EMPTY(&sc->sc_iflist) && sc->sc_ifp->if_mtu != ifs->if_mtu) { |
2740 | BRIDGE_LOG(LOG_NOTICE, 0, "%s invalid MTU for %s" , |
2741 | sc->sc_ifp->if_xname, |
2742 | ifs->if_xname); |
2743 | return EINVAL; |
2744 | } |
2745 | |
2746 | /* there's already an interface that's doing MAC NAT */ |
2747 | if (wifi_infra && sc->sc_mac_nat_bif != NULL) { |
2748 | return EBUSY; |
2749 | } |
2750 | |
2751 | /* prevent the interface from detaching while we add the member */ |
2752 | if (!ifnet_is_attached(ifs, refio: 1)) { |
2753 | return ENXIO; |
2754 | } |
2755 | |
2756 | /* allocate a new member */ |
2757 | bif = kalloc_type(struct bridge_iflist, Z_WAITOK | Z_ZERO | Z_NOFAIL); |
2758 | bif->bif_ifp = ifs; |
2759 | ifnet_reference(interface: ifs); |
2760 | bif->bif_ifflags |= IFBIF_LEARNING | IFBIF_DISCOVER; |
2761 | #if HAS_IF_CAP |
2762 | bif->bif_savedcaps = ifs->if_capenable; |
2763 | #endif /* HAS_IF_CAP */ |
2764 | bif->bif_sc = sc; |
2765 | if (wifi_infra) { |
2766 | (void)bridge_mac_nat_enable(sc, bif); |
2767 | } |
2768 | |
2769 | if (IFNET_IS_VMNET(ifs)) { |
2770 | allocate_vmnet_pf_tags(); |
2771 | } |
2772 | /* Allow the first Ethernet member to define the MTU */ |
2773 | if (TAILQ_EMPTY(&sc->sc_iflist)) { |
2774 | sc->sc_ifp->if_mtu = ifs->if_mtu; |
2775 | } |
2776 | |
2777 | /* |
2778 | * Assign the interface's MAC address to the bridge if it's the first |
2779 | * member and the MAC address of the bridge has not been changed from |
2780 | * the default (randomly) generated one. |
2781 | */ |
2782 | if (bridge_inherit_mac && TAILQ_EMPTY(&sc->sc_iflist) && |
2783 | _ether_cmp(IF_LLADDR(sc->sc_ifp), b: sc->sc_defaddr) == 0) { |
2784 | bcopy(IF_LLADDR(ifs), dst: eaddr, ETHER_ADDR_LEN); |
2785 | sc->sc_ifaddr = ifs; |
2786 | ifnet_reference(interface: ifs); /* for sc_ifaddr */ |
2787 | lladdr_changed = 1; |
2788 | } |
2789 | |
2790 | ifs->if_bridge = sc; |
2791 | #if BRIDGESTP |
2792 | bstp_create(&sc->sc_stp, &bif->bif_stp, bif->bif_ifp); |
2793 | #endif /* BRIDGESTP */ |
2794 | |
2795 | #if HAS_IF_CAP |
2796 | /* Set interface capabilities to the intersection set of all members */ |
2797 | bridge_mutecaps(sc); |
2798 | #endif /* HAS_IF_CAP */ |
2799 | |
2800 | |
2801 | /* |
2802 | * Respect lock ordering with DLIL lock for the following operations |
2803 | */ |
2804 | BRIDGE_UNLOCK(sc); |
2805 | |
2806 | /* enable promiscuous mode */ |
2807 | error = ifnet_set_promiscuous(interface: ifs, on: 1); |
2808 | switch (error) { |
2809 | case 0: |
2810 | bif->bif_flags |= BIFF_PROMISC; |
2811 | break; |
2812 | case ENETDOWN: |
2813 | case EPWROFF: |
2814 | BRIDGE_LOG(LOG_NOTICE, 0, |
2815 | "ifnet_set_promiscuous(%s) failed %d, ignoring" , |
2816 | ifs->if_xname, error); |
2817 | /* Ignore error when device is not up */ |
2818 | error = 0; |
2819 | break; |
2820 | default: |
2821 | BRIDGE_LOG(LOG_NOTICE, 0, |
2822 | "ifnet_set_promiscuous(%s) failed %d" , |
2823 | ifs->if_xname, error); |
2824 | BRIDGE_LOCK(sc); |
2825 | goto out; |
2826 | } |
2827 | if (wifi_infra) { |
2828 | int this_error; |
2829 | |
2830 | /* Wi-Fi doesn't really support promiscuous, set allmulti */ |
2831 | bif->bif_flags |= BIFF_WIFI_INFRA; |
2832 | this_error = if_allmulti(ifs, 1); |
2833 | if (this_error == 0) { |
2834 | bif->bif_flags |= BIFF_ALL_MULTI; |
2835 | #ifdef XNU_PLATFORM_AppleTVOS |
2836 | ip6_forwarding = 1; |
2837 | #endif /* XNU_PLATFORM_AppleTVOS */ |
2838 | } else { |
2839 | BRIDGE_LOG(LOG_NOTICE, 0, |
2840 | "if_allmulti(%s) failed %d, ignoring" , |
2841 | ifs->if_xname, this_error); |
2842 | } |
2843 | } |
2844 | #if SKYWALK |
2845 | /* ensure that the flowswitch is present for native interface */ |
2846 | if (SKYWALK_NATIVE(ifs)) { |
2847 | if (ifnet_attach_flowswitch_nexus(ifp: ifs)) { |
2848 | bif->bif_flags |= BIFF_FLOWSWITCH_ATTACHED; |
2849 | } |
2850 | } |
2851 | /* remove the netagent on the flowswitch (rdar://75050182) */ |
2852 | if (if_is_fsw_netagent_enabled()) { |
2853 | (void)ifnet_remove_netagent(ifp: ifs); |
2854 | bif->bif_flags |= BIFF_NETAGENT_REMOVED; |
2855 | } |
2856 | #endif /* SKYWALK */ |
2857 | |
2858 | /* |
2859 | * install an interface filter |
2860 | */ |
2861 | memset(s: &iff, c: 0, n: sizeof(struct iff_filter)); |
2862 | iff.iff_cookie = bif; |
2863 | iff.iff_name = "com.apple.kernel.bsd.net.if_bridge" ; |
2864 | iff.iff_input = bridge_iff_input; |
2865 | iff.iff_output = bridge_iff_output; |
2866 | iff.iff_event = bridge_iff_event; |
2867 | iff.iff_detached = bridge_iff_detached; |
2868 | error = dlil_attach_filter(ifs, &iff, &bif->bif_iff_ref, |
2869 | DLIL_IFF_TSO | DLIL_IFF_INTERNAL); |
2870 | if (error != 0) { |
2871 | BRIDGE_LOG(LOG_NOTICE, 0, "iflt_attach failed %d" , error); |
2872 | BRIDGE_LOCK(sc); |
2873 | goto out; |
2874 | } |
2875 | bif->bif_flags |= BIFF_FILTER_ATTACHED; |
2876 | |
2877 | /* |
2878 | * install a dummy "bridge" protocol |
2879 | */ |
2880 | if ((error = bridge_attach_protocol(ifp: ifs)) != 0) { |
2881 | if (error != 0) { |
2882 | BRIDGE_LOG(LOG_NOTICE, 0, |
2883 | "bridge_attach_protocol failed %d" , error); |
2884 | BRIDGE_LOCK(sc); |
2885 | goto out; |
2886 | } |
2887 | } |
2888 | bif->bif_flags |= BIFF_PROTO_ATTACHED; |
2889 | |
2890 | if (lladdr_changed && |
2891 | (error = ifnet_set_lladdr(interface: bifp, lladdr: eaddr, ETHER_ADDR_LEN)) != 0) { |
2892 | BRIDGE_LOG(LOG_NOTICE, 0, "ifnet_set_lladdr failed %d" , error); |
2893 | } |
2894 | |
2895 | media_active = interface_media_active(ifs); |
2896 | |
2897 | /* disable LRO */ |
2898 | if (bridge_set_lro(ifp: ifs, FALSE)) { |
2899 | bif->bif_flags |= BIFF_LRO_DISABLED; |
2900 | } |
2901 | |
2902 | /* |
2903 | * No failures past this point. Add the member to the list. |
2904 | */ |
2905 | BRIDGE_LOCK(sc); |
2906 | bif->bif_flags |= BIFF_IN_MEMBER_LIST; |
2907 | BRIDGE_XLOCK(sc); |
2908 | TAILQ_INSERT_TAIL(&sc->sc_iflist, bif, bif_next); |
2909 | BRIDGE_XDROP(sc); |
2910 | |
2911 | /* cache the member link status */ |
2912 | if (media_active != 0) { |
2913 | bif->bif_flags |= BIFF_MEDIA_ACTIVE; |
2914 | } else { |
2915 | bif->bif_flags &= ~BIFF_MEDIA_ACTIVE; |
2916 | } |
2917 | |
2918 | /* the new member may change the link status of the bridge interface */ |
2919 | event_code = bridge_updatelinkstatus(sc); |
2920 | |
2921 | /* check whether we need input broadcast or not */ |
2922 | input_broadcast = interface_needs_input_broadcast(ifp: ifs); |
2923 | bif_set_input_broadcast(bif, input_broadcast); |
2924 | BRIDGE_UNLOCK(sc); |
2925 | |
2926 | if (event_code != 0) { |
2927 | bridge_link_event(bifp, event_code); |
2928 | } |
2929 | BRIDGE_LOG(LOG_DEBUG, BR_DBGF_LIFECYCLE, |
2930 | "%s input broadcast %s" , ifs->if_xname, |
2931 | input_broadcast ? "ENABLED" : "DISABLED" ); |
2932 | |
2933 | BRIDGE_LOCK(sc); |
2934 | bridge_set_tso(sc); |
2935 | |
2936 | out: |
2937 | /* allow the interface to detach */ |
2938 | ifnet_decr_iorefcnt(ifs); |
2939 | |
2940 | if (error != 0) { |
2941 | if (bif != NULL) { |
2942 | bridge_delete_member(sc, bif); |
2943 | } |
2944 | } else if (IFNET_IS_VMNET(ifs)) { |
2945 | INC_ATOMIC_INT64_LIM(net_api_stats.nas_vmnet_total); |
2946 | } |
2947 | |
2948 | return error; |
2949 | } |
2950 | |
2951 | static int |
2952 | bridge_ioctl_del(struct bridge_softc *sc, void *arg) |
2953 | { |
2954 | struct ifbreq *req = arg; |
2955 | struct bridge_iflist *bif; |
2956 | |
2957 | bif = bridge_lookup_member(sc, name: req->ifbr_ifsname); |
2958 | if (bif == NULL) { |
2959 | return ENOENT; |
2960 | } |
2961 | |
2962 | bridge_delete_member(sc, bif); |
2963 | |
2964 | return 0; |
2965 | } |
2966 | |
2967 | static int |
2968 | bridge_ioctl_purge(struct bridge_softc *sc, void *arg) |
2969 | { |
2970 | #pragma unused(sc, arg) |
2971 | return 0; |
2972 | } |
2973 | |
2974 | static int |
2975 | bridge_ioctl_gifflags(struct bridge_softc *sc, void *arg) |
2976 | { |
2977 | struct ifbreq *req = arg; |
2978 | struct bridge_iflist *bif; |
2979 | |
2980 | bif = bridge_lookup_member(sc, name: req->ifbr_ifsname); |
2981 | if (bif == NULL) { |
2982 | return ENOENT; |
2983 | } |
2984 | |
2985 | struct bstp_port *bp; |
2986 | |
2987 | bp = &bif->bif_stp; |
2988 | req->ifbr_state = bp->bp_state; |
2989 | req->ifbr_priority = bp->bp_priority; |
2990 | req->ifbr_path_cost = bp->bp_path_cost; |
2991 | req->ifbr_proto = bp->bp_protover; |
2992 | req->ifbr_role = bp->bp_role; |
2993 | req->ifbr_stpflags = bp->bp_flags; |
2994 | req->ifbr_ifsflags = bif->bif_ifflags; |
2995 | |
2996 | /* Copy STP state options as flags */ |
2997 | if (bp->bp_operedge) { |
2998 | req->ifbr_ifsflags |= IFBIF_BSTP_EDGE; |
2999 | } |
3000 | if (bp->bp_flags & BSTP_PORT_AUTOEDGE) { |
3001 | req->ifbr_ifsflags |= IFBIF_BSTP_AUTOEDGE; |
3002 | } |
3003 | if (bp->bp_ptp_link) { |
3004 | req->ifbr_ifsflags |= IFBIF_BSTP_PTP; |
3005 | } |
3006 | if (bp->bp_flags & BSTP_PORT_AUTOPTP) { |
3007 | req->ifbr_ifsflags |= IFBIF_BSTP_AUTOPTP; |
3008 | } |
3009 | if (bp->bp_flags & BSTP_PORT_ADMEDGE) { |
3010 | req->ifbr_ifsflags |= IFBIF_BSTP_ADMEDGE; |
3011 | } |
3012 | if (bp->bp_flags & BSTP_PORT_ADMCOST) { |
3013 | req->ifbr_ifsflags |= IFBIF_BSTP_ADMCOST; |
3014 | } |
3015 | |
3016 | req->ifbr_portno = bif->bif_ifp->if_index & 0xfff; |
3017 | req->ifbr_addrcnt = bif->bif_addrcnt; |
3018 | req->ifbr_addrmax = bif->bif_addrmax; |
3019 | req->ifbr_addrexceeded = bif->bif_addrexceeded; |
3020 | |
3021 | return 0; |
3022 | } |
3023 | |
3024 | static int |
3025 | bridge_ioctl_sifflags(struct bridge_softc *sc, void *arg) |
3026 | { |
3027 | struct ifbreq *req = arg; |
3028 | struct bridge_iflist *bif; |
3029 | #if BRIDGESTP |
3030 | struct bstp_port *bp; |
3031 | int error; |
3032 | #endif /* BRIDGESTP */ |
3033 | |
3034 | bif = bridge_lookup_member(sc, name: req->ifbr_ifsname); |
3035 | if (bif == NULL) { |
3036 | return ENOENT; |
3037 | } |
3038 | |
3039 | if (req->ifbr_ifsflags & IFBIF_SPAN) { |
3040 | /* SPAN is readonly */ |
3041 | return EINVAL; |
3042 | } |
3043 | #define _EXCLUSIVE_FLAGS (IFBIF_CHECKSUM_OFFLOAD | IFBIF_MAC_NAT) |
3044 | if ((req->ifbr_ifsflags & _EXCLUSIVE_FLAGS) == _EXCLUSIVE_FLAGS) { |
3045 | /* can't specify both MAC-NAT and checksum offload */ |
3046 | return EINVAL; |
3047 | } |
3048 | if ((req->ifbr_ifsflags & IFBIF_MAC_NAT) != 0) { |
3049 | errno_t error; |
3050 | |
3051 | error = bridge_mac_nat_enable(sc, bif); |
3052 | if (error != 0) { |
3053 | return error; |
3054 | } |
3055 | } else if (sc->sc_mac_nat_bif == bif) { |
3056 | bridge_mac_nat_disable(sc); |
3057 | } |
3058 | |
3059 | |
3060 | #if BRIDGESTP |
3061 | if (req->ifbr_ifsflags & IFBIF_STP) { |
3062 | if ((bif->bif_ifflags & IFBIF_STP) == 0) { |
3063 | error = bstp_enable(&bif->bif_stp); |
3064 | if (error) { |
3065 | return error; |
3066 | } |
3067 | } |
3068 | } else { |
3069 | if ((bif->bif_ifflags & IFBIF_STP) != 0) { |
3070 | bstp_disable(&bif->bif_stp); |
3071 | } |
3072 | } |
3073 | |
3074 | /* Pass on STP flags */ |
3075 | bp = &bif->bif_stp; |
3076 | bstp_set_edge(bp, req->ifbr_ifsflags & IFBIF_BSTP_EDGE ? 1 : 0); |
3077 | bstp_set_autoedge(bp, req->ifbr_ifsflags & IFBIF_BSTP_AUTOEDGE ? 1 : 0); |
3078 | bstp_set_ptp(bp, req->ifbr_ifsflags & IFBIF_BSTP_PTP ? 1 : 0); |
3079 | bstp_set_autoptp(bp, req->ifbr_ifsflags & IFBIF_BSTP_AUTOPTP ? 1 : 0); |
3080 | #else /* !BRIDGESTP */ |
3081 | if (req->ifbr_ifsflags & IFBIF_STP) { |
3082 | return EOPNOTSUPP; |
3083 | } |
3084 | #endif /* !BRIDGESTP */ |
3085 | |
3086 | /* Save the bits relating to the bridge */ |
3087 | bif->bif_ifflags = req->ifbr_ifsflags & IFBIFMASK; |
3088 | |
3089 | |
3090 | return 0; |
3091 | } |
3092 | |
3093 | static int |
3094 | bridge_ioctl_scache(struct bridge_softc *sc, void *arg) |
3095 | { |
3096 | struct ifbrparam *param = arg; |
3097 | |
3098 | sc->sc_brtmax = param->ifbrp_csize; |
3099 | bridge_rttrim(sc); |
3100 | return 0; |
3101 | } |
3102 | |
3103 | static int |
3104 | bridge_ioctl_gcache(struct bridge_softc *sc, void *arg) |
3105 | { |
3106 | struct ifbrparam *param = arg; |
3107 | |
3108 | param->ifbrp_csize = sc->sc_brtmax; |
3109 | |
3110 | return 0; |
3111 | } |
3112 | |
3113 | #define BRIDGE_IOCTL_GIFS do { \ |
3114 | struct bridge_iflist *bif; \ |
3115 | struct ifbreq breq; \ |
3116 | char *buf, *outbuf; \ |
3117 | unsigned int count, buflen, len; \ |
3118 | \ |
3119 | count = 0; \ |
3120 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) \ |
3121 | count++; \ |
3122 | TAILQ_FOREACH(bif, &sc->sc_spanlist, bif_next) \ |
3123 | count++; \ |
3124 | \ |
3125 | buflen = sizeof (breq) * count; \ |
3126 | if (bifc->ifbic_len == 0) { \ |
3127 | bifc->ifbic_len = buflen; \ |
3128 | return (0); \ |
3129 | } \ |
3130 | BRIDGE_UNLOCK(sc); \ |
3131 | outbuf = (char *)kalloc_data(buflen, Z_WAITOK | Z_ZERO); \ |
3132 | BRIDGE_LOCK(sc); \ |
3133 | \ |
3134 | count = 0; \ |
3135 | buf = outbuf; \ |
3136 | len = min(bifc->ifbic_len, buflen); \ |
3137 | bzero(&breq, sizeof (breq)); \ |
3138 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) { \ |
3139 | if (len < sizeof (breq)) \ |
3140 | break; \ |
3141 | \ |
3142 | snprintf(breq.ifbr_ifsname, sizeof (breq.ifbr_ifsname), \ |
3143 | "%s", bif->bif_ifp->if_xname); \ |
3144 | /* Fill in the ifbreq structure */ \ |
3145 | error = bridge_ioctl_gifflags(sc, &breq); \ |
3146 | if (error) \ |
3147 | break; \ |
3148 | memcpy(buf, &breq, sizeof (breq)); \ |
3149 | count++; \ |
3150 | buf += sizeof (breq); \ |
3151 | len -= sizeof (breq); \ |
3152 | } \ |
3153 | TAILQ_FOREACH(bif, &sc->sc_spanlist, bif_next) { \ |
3154 | if (len < sizeof (breq)) \ |
3155 | break; \ |
3156 | \ |
3157 | snprintf(breq.ifbr_ifsname, \ |
3158 | sizeof (breq.ifbr_ifsname), \ |
3159 | "%s", bif->bif_ifp->if_xname); \ |
3160 | breq.ifbr_ifsflags = bif->bif_ifflags; \ |
3161 | breq.ifbr_portno \ |
3162 | = bif->bif_ifp->if_index & 0xfff; \ |
3163 | memcpy(buf, &breq, sizeof (breq)); \ |
3164 | count++; \ |
3165 | buf += sizeof (breq); \ |
3166 | len -= sizeof (breq); \ |
3167 | } \ |
3168 | \ |
3169 | BRIDGE_UNLOCK(sc); \ |
3170 | bifc->ifbic_len = sizeof (breq) * count; \ |
3171 | error = copyout(outbuf, bifc->ifbic_req, bifc->ifbic_len); \ |
3172 | BRIDGE_LOCK(sc); \ |
3173 | kfree_data(outbuf, buflen); \ |
3174 | } while (0) |
3175 | |
3176 | static int |
3177 | bridge_ioctl_gifs64(struct bridge_softc *sc, void *arg) |
3178 | { |
3179 | struct ifbifconf64 *bifc = arg; |
3180 | int error = 0; |
3181 | |
3182 | BRIDGE_IOCTL_GIFS; |
3183 | |
3184 | return error; |
3185 | } |
3186 | |
3187 | static int |
3188 | bridge_ioctl_gifs32(struct bridge_softc *sc, void *arg) |
3189 | { |
3190 | struct ifbifconf32 *bifc = arg; |
3191 | int error = 0; |
3192 | |
3193 | BRIDGE_IOCTL_GIFS; |
3194 | |
3195 | return error; |
3196 | } |
3197 | |
3198 | #define BRIDGE_IOCTL_RTS do { \ |
3199 | struct bridge_rtnode *brt; \ |
3200 | char *buf; \ |
3201 | char *outbuf = NULL; \ |
3202 | unsigned int count, buflen, len; \ |
3203 | unsigned long now; \ |
3204 | \ |
3205 | if (bac->ifbac_len == 0) \ |
3206 | return (0); \ |
3207 | \ |
3208 | bzero(&bareq, sizeof (bareq)); \ |
3209 | count = 0; \ |
3210 | LIST_FOREACH(brt, &sc->sc_rtlist, brt_list) \ |
3211 | count++; \ |
3212 | buflen = sizeof (bareq) * count; \ |
3213 | \ |
3214 | BRIDGE_UNLOCK(sc); \ |
3215 | outbuf = (char *)kalloc_data(buflen, Z_WAITOK | Z_ZERO); \ |
3216 | BRIDGE_LOCK(sc); \ |
3217 | \ |
3218 | count = 0; \ |
3219 | buf = outbuf; \ |
3220 | len = min(bac->ifbac_len, buflen); \ |
3221 | LIST_FOREACH(brt, &sc->sc_rtlist, brt_list) { \ |
3222 | if (len < sizeof (bareq)) \ |
3223 | goto out; \ |
3224 | snprintf(bareq.ifba_ifsname, sizeof (bareq.ifba_ifsname), \ |
3225 | "%s", brt->brt_ifp->if_xname); \ |
3226 | memcpy(bareq.ifba_dst, brt->brt_addr, sizeof (brt->brt_addr)); \ |
3227 | bareq.ifba_vlan = brt->brt_vlan; \ |
3228 | if ((brt->brt_flags & IFBAF_TYPEMASK) == IFBAF_DYNAMIC) { \ |
3229 | now = (unsigned long) net_uptime(); \ |
3230 | if (now < brt->brt_expire) \ |
3231 | bareq.ifba_expire = \ |
3232 | brt->brt_expire - now; \ |
3233 | } else \ |
3234 | bareq.ifba_expire = 0; \ |
3235 | bareq.ifba_flags = brt->brt_flags; \ |
3236 | \ |
3237 | memcpy(buf, &bareq, sizeof (bareq)); \ |
3238 | count++; \ |
3239 | buf += sizeof (bareq); \ |
3240 | len -= sizeof (bareq); \ |
3241 | } \ |
3242 | out: \ |
3243 | bac->ifbac_len = sizeof (bareq) * count; \ |
3244 | if (outbuf != NULL) { \ |
3245 | BRIDGE_UNLOCK(sc); \ |
3246 | error = copyout(outbuf, bac->ifbac_req, bac->ifbac_len); \ |
3247 | kfree_data(outbuf, buflen); \ |
3248 | BRIDGE_LOCK(sc); \ |
3249 | } \ |
3250 | return (error); \ |
3251 | } while (0) |
3252 | |
3253 | static int |
3254 | bridge_ioctl_rts64(struct bridge_softc *sc, void *arg) |
3255 | { |
3256 | struct ifbaconf64 *bac = arg; |
3257 | struct ifbareq64 bareq; |
3258 | int error = 0; |
3259 | |
3260 | BRIDGE_IOCTL_RTS; |
3261 | return error; |
3262 | } |
3263 | |
3264 | static int |
3265 | bridge_ioctl_rts32(struct bridge_softc *sc, void *arg) |
3266 | { |
3267 | struct ifbaconf32 *bac = arg; |
3268 | struct ifbareq32 bareq; |
3269 | int error = 0; |
3270 | |
3271 | BRIDGE_IOCTL_RTS; |
3272 | return error; |
3273 | } |
3274 | |
3275 | static int |
3276 | bridge_ioctl_saddr32(struct bridge_softc *sc, void *arg) |
3277 | { |
3278 | struct ifbareq32 *req = arg; |
3279 | struct bridge_iflist *bif; |
3280 | int error; |
3281 | |
3282 | bif = bridge_lookup_member(sc, name: req->ifba_ifsname); |
3283 | if (bif == NULL) { |
3284 | return ENOENT; |
3285 | } |
3286 | |
3287 | error = bridge_rtupdate(sc, req->ifba_dst, req->ifba_vlan, bif, 1, |
3288 | req->ifba_flags); |
3289 | |
3290 | return error; |
3291 | } |
3292 | |
3293 | static int |
3294 | bridge_ioctl_saddr64(struct bridge_softc *sc, void *arg) |
3295 | { |
3296 | struct ifbareq64 *req = arg; |
3297 | struct bridge_iflist *bif; |
3298 | int error; |
3299 | |
3300 | bif = bridge_lookup_member(sc, name: req->ifba_ifsname); |
3301 | if (bif == NULL) { |
3302 | return ENOENT; |
3303 | } |
3304 | |
3305 | error = bridge_rtupdate(sc, req->ifba_dst, req->ifba_vlan, bif, 1, |
3306 | req->ifba_flags); |
3307 | |
3308 | return error; |
3309 | } |
3310 | |
3311 | static int |
3312 | bridge_ioctl_sto(struct bridge_softc *sc, void *arg) |
3313 | { |
3314 | struct ifbrparam *param = arg; |
3315 | |
3316 | sc->sc_brttimeout = param->ifbrp_ctime; |
3317 | return 0; |
3318 | } |
3319 | |
3320 | static int |
3321 | bridge_ioctl_gto(struct bridge_softc *sc, void *arg) |
3322 | { |
3323 | struct ifbrparam *param = arg; |
3324 | |
3325 | param->ifbrp_ctime = sc->sc_brttimeout; |
3326 | return 0; |
3327 | } |
3328 | |
3329 | static int |
3330 | bridge_ioctl_daddr32(struct bridge_softc *sc, void *arg) |
3331 | { |
3332 | struct ifbareq32 *req = arg; |
3333 | |
3334 | return bridge_rtdaddr(sc, req->ifba_dst, req->ifba_vlan); |
3335 | } |
3336 | |
3337 | static int |
3338 | bridge_ioctl_daddr64(struct bridge_softc *sc, void *arg) |
3339 | { |
3340 | struct ifbareq64 *req = arg; |
3341 | |
3342 | return bridge_rtdaddr(sc, req->ifba_dst, req->ifba_vlan); |
3343 | } |
3344 | |
3345 | static int |
3346 | bridge_ioctl_flush(struct bridge_softc *sc, void *arg) |
3347 | { |
3348 | struct ifbreq *req = arg; |
3349 | |
3350 | bridge_rtflush(sc, req->ifbr_ifsflags); |
3351 | return 0; |
3352 | } |
3353 | |
3354 | static int |
3355 | bridge_ioctl_gpri(struct bridge_softc *sc, void *arg) |
3356 | { |
3357 | struct ifbrparam *param = arg; |
3358 | struct bstp_state *bs = &sc->sc_stp; |
3359 | |
3360 | param->ifbrp_prio = bs->bs_bridge_priority; |
3361 | return 0; |
3362 | } |
3363 | |
3364 | static int |
3365 | bridge_ioctl_spri(struct bridge_softc *sc, void *arg) |
3366 | { |
3367 | #if BRIDGESTP |
3368 | struct ifbrparam *param = arg; |
3369 | |
3370 | return bstp_set_priority(&sc->sc_stp, param->ifbrp_prio); |
3371 | #else /* !BRIDGESTP */ |
3372 | #pragma unused(sc, arg) |
3373 | return EOPNOTSUPP; |
3374 | #endif /* !BRIDGESTP */ |
3375 | } |
3376 | |
3377 | static int |
3378 | bridge_ioctl_ght(struct bridge_softc *sc, void *arg) |
3379 | { |
3380 | struct ifbrparam *param = arg; |
3381 | struct bstp_state *bs = &sc->sc_stp; |
3382 | |
3383 | param->ifbrp_hellotime = bs->bs_bridge_htime >> 8; |
3384 | return 0; |
3385 | } |
3386 | |
3387 | static int |
3388 | bridge_ioctl_sht(struct bridge_softc *sc, void *arg) |
3389 | { |
3390 | #if BRIDGESTP |
3391 | struct ifbrparam *param = arg; |
3392 | |
3393 | return bstp_set_htime(&sc->sc_stp, param->ifbrp_hellotime); |
3394 | #else /* !BRIDGESTP */ |
3395 | #pragma unused(sc, arg) |
3396 | return EOPNOTSUPP; |
3397 | #endif /* !BRIDGESTP */ |
3398 | } |
3399 | |
3400 | static int |
3401 | bridge_ioctl_gfd(struct bridge_softc *sc, void *arg) |
3402 | { |
3403 | struct ifbrparam *param; |
3404 | struct bstp_state *bs; |
3405 | |
3406 | param = arg; |
3407 | bs = &sc->sc_stp; |
3408 | param->ifbrp_fwddelay = bs->bs_bridge_fdelay >> 8; |
3409 | return 0; |
3410 | } |
3411 | |
3412 | static int |
3413 | bridge_ioctl_sfd(struct bridge_softc *sc, void *arg) |
3414 | { |
3415 | #if BRIDGESTP |
3416 | struct ifbrparam *param = arg; |
3417 | |
3418 | return bstp_set_fdelay(&sc->sc_stp, param->ifbrp_fwddelay); |
3419 | #else /* !BRIDGESTP */ |
3420 | #pragma unused(sc, arg) |
3421 | return EOPNOTSUPP; |
3422 | #endif /* !BRIDGESTP */ |
3423 | } |
3424 | |
3425 | static int |
3426 | bridge_ioctl_gma(struct bridge_softc *sc, void *arg) |
3427 | { |
3428 | struct ifbrparam *param; |
3429 | struct bstp_state *bs; |
3430 | |
3431 | param = arg; |
3432 | bs = &sc->sc_stp; |
3433 | param->ifbrp_maxage = bs->bs_bridge_max_age >> 8; |
3434 | return 0; |
3435 | } |
3436 | |
3437 | static int |
3438 | bridge_ioctl_sma(struct bridge_softc *sc, void *arg) |
3439 | { |
3440 | #if BRIDGESTP |
3441 | struct ifbrparam *param = arg; |
3442 | |
3443 | return bstp_set_maxage(&sc->sc_stp, param->ifbrp_maxage); |
3444 | #else /* !BRIDGESTP */ |
3445 | #pragma unused(sc, arg) |
3446 | return EOPNOTSUPP; |
3447 | #endif /* !BRIDGESTP */ |
3448 | } |
3449 | |
3450 | static int |
3451 | bridge_ioctl_sifprio(struct bridge_softc *sc, void *arg) |
3452 | { |
3453 | #if BRIDGESTP |
3454 | struct ifbreq *req = arg; |
3455 | struct bridge_iflist *bif; |
3456 | |
3457 | bif = bridge_lookup_member(sc, req->ifbr_ifsname); |
3458 | if (bif == NULL) { |
3459 | return ENOENT; |
3460 | } |
3461 | |
3462 | return bstp_set_port_priority(&bif->bif_stp, req->ifbr_priority); |
3463 | #else /* !BRIDGESTP */ |
3464 | #pragma unused(sc, arg) |
3465 | return EOPNOTSUPP; |
3466 | #endif /* !BRIDGESTP */ |
3467 | } |
3468 | |
3469 | static int |
3470 | bridge_ioctl_sifcost(struct bridge_softc *sc, void *arg) |
3471 | { |
3472 | #if BRIDGESTP |
3473 | struct ifbreq *req = arg; |
3474 | struct bridge_iflist *bif; |
3475 | |
3476 | bif = bridge_lookup_member(sc, req->ifbr_ifsname); |
3477 | if (bif == NULL) { |
3478 | return ENOENT; |
3479 | } |
3480 | |
3481 | return bstp_set_path_cost(&bif->bif_stp, req->ifbr_path_cost); |
3482 | #else /* !BRIDGESTP */ |
3483 | #pragma unused(sc, arg) |
3484 | return EOPNOTSUPP; |
3485 | #endif /* !BRIDGESTP */ |
3486 | } |
3487 | |
3488 | static int |
3489 | bridge_ioctl_gfilt(struct bridge_softc *sc, void *arg) |
3490 | { |
3491 | struct ifbrparam *param = arg; |
3492 | |
3493 | param->ifbrp_filter = sc->sc_filter_flags; |
3494 | |
3495 | return 0; |
3496 | } |
3497 | |
3498 | static int |
3499 | bridge_ioctl_sfilt(struct bridge_softc *sc, void *arg) |
3500 | { |
3501 | struct ifbrparam *param = arg; |
3502 | |
3503 | if (param->ifbrp_filter & ~IFBF_FILT_MASK) { |
3504 | return EINVAL; |
3505 | } |
3506 | |
3507 | if (param->ifbrp_filter & IFBF_FILT_USEIPF) { |
3508 | return EINVAL; |
3509 | } |
3510 | |
3511 | sc->sc_filter_flags = param->ifbrp_filter; |
3512 | |
3513 | return 0; |
3514 | } |
3515 | |
3516 | static int |
3517 | bridge_ioctl_sifmaxaddr(struct bridge_softc *sc, void *arg) |
3518 | { |
3519 | struct ifbreq *req = arg; |
3520 | struct bridge_iflist *bif; |
3521 | |
3522 | bif = bridge_lookup_member(sc, name: req->ifbr_ifsname); |
3523 | if (bif == NULL) { |
3524 | return ENOENT; |
3525 | } |
3526 | |
3527 | bif->bif_addrmax = req->ifbr_addrmax; |
3528 | return 0; |
3529 | } |
3530 | |
3531 | static int |
3532 | bridge_ioctl_addspan(struct bridge_softc *sc, void *arg) |
3533 | { |
3534 | struct ifbreq *req = arg; |
3535 | struct bridge_iflist *bif = NULL; |
3536 | struct ifnet *ifs; |
3537 | |
3538 | ifs = ifunit(req->ifbr_ifsname); |
3539 | if (ifs == NULL) { |
3540 | return ENOENT; |
3541 | } |
3542 | |
3543 | if (IFNET_IS_INTCOPROC(ifs) || IFNET_IS_MANAGEMENT(ifs)) { |
3544 | return EINVAL; |
3545 | } |
3546 | |
3547 | TAILQ_FOREACH(bif, &sc->sc_spanlist, bif_next) |
3548 | if (ifs == bif->bif_ifp) { |
3549 | return EBUSY; |
3550 | } |
3551 | |
3552 | if (ifs->if_bridge != NULL) { |
3553 | return EBUSY; |
3554 | } |
3555 | |
3556 | switch (ifs->if_type) { |
3557 | case IFT_ETHER: |
3558 | case IFT_L2VLAN: |
3559 | case IFT_IEEE8023ADLAG: |
3560 | break; |
3561 | case IFT_GIF: |
3562 | /* currently not supported */ |
3563 | /* FALLTHRU */ |
3564 | default: |
3565 | return EINVAL; |
3566 | } |
3567 | |
3568 | bif = kalloc_type(struct bridge_iflist, Z_WAITOK | Z_ZERO | Z_NOFAIL); |
3569 | |
3570 | bif->bif_ifp = ifs; |
3571 | bif->bif_ifflags = IFBIF_SPAN; |
3572 | |
3573 | ifnet_reference(interface: bif->bif_ifp); |
3574 | |
3575 | TAILQ_INSERT_HEAD(&sc->sc_spanlist, bif, bif_next); |
3576 | |
3577 | return 0; |
3578 | } |
3579 | |
3580 | static int |
3581 | bridge_ioctl_delspan(struct bridge_softc *sc, void *arg) |
3582 | { |
3583 | struct ifbreq *req = arg; |
3584 | struct bridge_iflist *bif; |
3585 | struct ifnet *ifs; |
3586 | |
3587 | ifs = ifunit(req->ifbr_ifsname); |
3588 | if (ifs == NULL) { |
3589 | return ENOENT; |
3590 | } |
3591 | |
3592 | TAILQ_FOREACH(bif, &sc->sc_spanlist, bif_next) |
3593 | if (ifs == bif->bif_ifp) { |
3594 | break; |
3595 | } |
3596 | |
3597 | if (bif == NULL) { |
3598 | return ENOENT; |
3599 | } |
3600 | |
3601 | bridge_delete_span(sc, bif); |
3602 | |
3603 | return 0; |
3604 | } |
3605 | |
3606 | #define BRIDGE_IOCTL_GBPARAM do { \ |
3607 | struct bstp_state *bs = &sc->sc_stp; \ |
3608 | struct bstp_port *root_port; \ |
3609 | \ |
3610 | req->ifbop_maxage = bs->bs_bridge_max_age >> 8; \ |
3611 | req->ifbop_hellotime = bs->bs_bridge_htime >> 8; \ |
3612 | req->ifbop_fwddelay = bs->bs_bridge_fdelay >> 8; \ |
3613 | \ |
3614 | root_port = bs->bs_root_port; \ |
3615 | if (root_port == NULL) \ |
3616 | req->ifbop_root_port = 0; \ |
3617 | else \ |
3618 | req->ifbop_root_port = root_port->bp_ifp->if_index; \ |
3619 | \ |
3620 | req->ifbop_holdcount = bs->bs_txholdcount; \ |
3621 | req->ifbop_priority = bs->bs_bridge_priority; \ |
3622 | req->ifbop_protocol = bs->bs_protover; \ |
3623 | req->ifbop_root_path_cost = bs->bs_root_pv.pv_cost; \ |
3624 | req->ifbop_bridgeid = bs->bs_bridge_pv.pv_dbridge_id; \ |
3625 | req->ifbop_designated_root = bs->bs_root_pv.pv_root_id; \ |
3626 | req->ifbop_designated_bridge = bs->bs_root_pv.pv_dbridge_id; \ |
3627 | req->ifbop_last_tc_time.tv_sec = bs->bs_last_tc_time.tv_sec; \ |
3628 | req->ifbop_last_tc_time.tv_usec = bs->bs_last_tc_time.tv_usec; \ |
3629 | } while (0) |
3630 | |
3631 | static int |
3632 | bridge_ioctl_gbparam32(struct bridge_softc *sc, void *arg) |
3633 | { |
3634 | struct ifbropreq32 *req = arg; |
3635 | |
3636 | BRIDGE_IOCTL_GBPARAM; |
3637 | return 0; |
3638 | } |
3639 | |
3640 | static int |
3641 | bridge_ioctl_gbparam64(struct bridge_softc *sc, void *arg) |
3642 | { |
3643 | struct ifbropreq64 *req = arg; |
3644 | |
3645 | BRIDGE_IOCTL_GBPARAM; |
3646 | return 0; |
3647 | } |
3648 | |
3649 | static int |
3650 | bridge_ioctl_grte(struct bridge_softc *sc, void *arg) |
3651 | { |
3652 | struct ifbrparam *param = arg; |
3653 | |
3654 | param->ifbrp_cexceeded = sc->sc_brtexceeded; |
3655 | return 0; |
3656 | } |
3657 | |
3658 | #define BRIDGE_IOCTL_GIFSSTP do { \ |
3659 | struct bridge_iflist *bif; \ |
3660 | struct bstp_port *bp; \ |
3661 | struct ifbpstpreq bpreq; \ |
3662 | char *buf, *outbuf; \ |
3663 | unsigned int count, buflen, len; \ |
3664 | \ |
3665 | count = 0; \ |
3666 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) { \ |
3667 | if ((bif->bif_ifflags & IFBIF_STP) != 0) \ |
3668 | count++; \ |
3669 | } \ |
3670 | \ |
3671 | buflen = sizeof (bpreq) * count; \ |
3672 | if (bifstp->ifbpstp_len == 0) { \ |
3673 | bifstp->ifbpstp_len = buflen; \ |
3674 | return (0); \ |
3675 | } \ |
3676 | \ |
3677 | BRIDGE_UNLOCK(sc); \ |
3678 | outbuf = (char *)kalloc_data(buflen, Z_WAITOK | Z_ZERO); \ |
3679 | BRIDGE_LOCK(sc); \ |
3680 | \ |
3681 | count = 0; \ |
3682 | buf = outbuf; \ |
3683 | len = min(bifstp->ifbpstp_len, buflen); \ |
3684 | bzero(&bpreq, sizeof (bpreq)); \ |
3685 | TAILQ_FOREACH(bif, &sc->sc_iflist, bif_next) { \ |
3686 | if (len < sizeof (bpreq)) \ |
3687 | break; \ |
3688 | \ |
3689 | if ((bif->bif_ifflags & IFBIF_STP) == 0) \ |
3690 | continue; \ |
3691 | \ |
3692 | bp = &bif->bif_stp; \ |
3693 | bpreq.ifbp_portno = bif->bif_ifp->if_index & 0xfff; \ |
3694 | bpreq.ifbp_fwd_trans = bp->bp_forward_transitions; \ |
3695 | bpreq.ifbp_design_cost = bp->bp_desg_pv.pv_cost; \ |
3696 | bpreq.ifbp_design_port = bp->bp_desg_pv.pv_port_id; \ |
3697 | bpreq.ifbp_design_bridge = bp->bp_desg_pv.pv_dbridge_id; \ |
3698 | bpreq.ifbp_design_root = bp->bp_desg_pv.pv_root_id; \ |
3699 | \ |
3700 | memcpy(buf, &bpreq, sizeof (bpreq)); \ |
3701 | count++; \ |
3702 | buf += sizeof (bpreq); \ |
3703 | len -= sizeof (bpreq); \ |
3704 | } \ |
3705 | \ |
3706 | BRIDGE_UNLOCK(sc); \ |
3707 | bifstp->ifbpstp_len = sizeof (bpreq) * count; \ |
3708 | error = copyout(outbuf, bifstp->ifbpstp_req, bifstp->ifbpstp_len); \ |
3709 | BRIDGE_LOCK(sc); \ |
3710 | kfree_data(outbuf, buflen); \ |
3711 | return (error); \ |
3712 | } while (0) |
3713 | |
3714 | static int |
3715 | bridge_ioctl_gifsstp32(struct bridge_softc *sc, void *arg) |
3716 | { |
3717 | struct ifbpstpconf32 *bifstp = arg; |
3718 | int error = 0; |
3719 | |
3720 | BRIDGE_IOCTL_GIFSSTP; |
3721 | return error; |
3722 | } |
3723 | |
3724 | static int |
3725 | bridge_ioctl_gifsstp64(struct bridge_softc *sc, void *arg) |
3726 | { |
3727 | struct ifbpstpconf64 *bifstp = arg; |
3728 | int error = 0; |
3729 | |
3730 | BRIDGE_IOCTL_GIFSSTP; |
3731 | return error; |
3732 | } |
3733 | |
3734 | static int |
3735 | bridge_ioctl_sproto(struct bridge_softc *sc, void *arg) |
3736 | { |
3737 | #if BRIDGESTP |
3738 | struct ifbrparam *param = arg; |
3739 | |
3740 | return bstp_set_protocol(&sc->sc_stp, param->ifbrp_proto); |
3741 | #else /* !BRIDGESTP */ |
3742 | #pragma unused(sc, arg) |
3743 | return EOPNOTSUPP; |
3744 | #endif /* !BRIDGESTP */ |
3745 | } |
3746 | |
3747 | static int |
3748 | bridge_ioctl_stxhc(struct bridge_softc *sc, void *arg) |
3749 | { |
3750 | #if BRIDGESTP |
3751 | struct ifbrparam *param = arg; |
3752 | |
3753 | return bstp_set_holdcount(&sc->sc_stp, param->ifbrp_txhc); |
3754 | #else /* !BRIDGESTP */ |
3755 | #pragma unused(sc, arg) |
3756 | return EOPNOTSUPP; |
3757 | #endif /* !BRIDGESTP */ |
3758 | } |
3759 | |
3760 | |
3761 | static int |
3762 | bridge_ioctl_ghostfilter(struct bridge_softc *sc, void *arg) |
3763 | { |
3764 | struct ifbrhostfilter *req = arg; |
3765 | struct bridge_iflist *bif; |
3766 | |
3767 | bif = bridge_lookup_member(sc, name: req->ifbrhf_ifsname); |
3768 | if (bif == NULL) { |
3769 | return ENOENT; |
3770 | } |
3771 | |
3772 | bzero(s: req, n: sizeof(struct ifbrhostfilter)); |
3773 | if (bif->bif_flags & BIFF_HOST_FILTER) { |
3774 | req->ifbrhf_flags |= IFBRHF_ENABLED; |
3775 | bcopy(src: bif->bif_hf_hwsrc, dst: req->ifbrhf_hwsrca, |
3776 | ETHER_ADDR_LEN); |
3777 | req->ifbrhf_ipsrc = bif->bif_hf_ipsrc.s_addr; |
3778 | } |
3779 | return 0; |
3780 | } |
3781 | |
3782 | static int |
3783 | bridge_ioctl_shostfilter(struct bridge_softc *sc, void *arg) |
3784 | { |
3785 | struct ifbrhostfilter *req = arg; |
3786 | struct bridge_iflist *bif; |
3787 | |
3788 | bif = bridge_lookup_member(sc, name: req->ifbrhf_ifsname); |
3789 | if (bif == NULL) { |
3790 | return ENOENT; |
3791 | } |
3792 | |
3793 | if (req->ifbrhf_flags & IFBRHF_ENABLED) { |
3794 | bif->bif_flags |= BIFF_HOST_FILTER; |
3795 | |
3796 | if (req->ifbrhf_flags & IFBRHF_HWSRC) { |
3797 | bcopy(src: req->ifbrhf_hwsrca, dst: bif->bif_hf_hwsrc, |
3798 | ETHER_ADDR_LEN); |
3799 | if (bcmp(s1: req->ifbrhf_hwsrca, s2: ethernulladdr, |
3800 | ETHER_ADDR_LEN) != 0) { |
3801 | bif->bif_flags |= BIFF_HF_HWSRC; |
3802 | } else { |
3803 | bif->bif_flags &= ~BIFF_HF_HWSRC; |
3804 | } |
3805 | } |
3806 | if (req->ifbrhf_flags & IFBRHF_IPSRC) { |
3807 | bif->bif_hf_ipsrc.s_addr = req->ifbrhf_ipsrc; |
3808 | if (bif->bif_hf_ipsrc.s_addr != INADDR_ANY) { |
3809 | bif->bif_flags |= BIFF_HF_IPSRC; |
3810 | } else { |
3811 | bif->bif_flags &= ~BIFF_HF_IPSRC; |
3812 | } |
3813 | } |
3814 | } else { |
3815 | bif->bif_flags &= ~(BIFF_HOST_FILTER | BIFF_HF_HWSRC | |
3816 | BIFF_HF_IPSRC); |
3817 | bzero(s: bif->bif_hf_hwsrc, ETHER_ADDR_LEN); |
3818 | bif->bif_hf_ipsrc.s_addr = INADDR_ANY; |
3819 | } |
3820 | |
3821 | return 0; |
3822 | } |
3823 | |
3824 | static char * |
3825 | bridge_mac_nat_entry_out(struct mac_nat_entry_list * list, |
3826 | unsigned int * count_p, char *buf, unsigned int *len_p) |
3827 | { |
3828 | unsigned int count = *count_p; |
3829 | struct ifbrmne ifbmne; |
3830 | unsigned int len = *len_p; |
3831 | struct mac_nat_entry *mne; |
3832 | unsigned long now; |
3833 | |
3834 | bzero(s: &ifbmne, n: sizeof(ifbmne)); |
3835 | LIST_FOREACH(mne, list, mne_list) { |
3836 | if (len < sizeof(ifbmne)) { |
3837 | break; |
3838 | } |
3839 | snprintf(ifbmne.ifbmne_ifname, count: sizeof(ifbmne.ifbmne_ifname), |
3840 | "%s" , mne->mne_bif->bif_ifp->if_xname); |
3841 | memcpy(dst: ifbmne.ifbmne_mac, src: mne->mne_mac, |
3842 | n: sizeof(ifbmne.ifbmne_mac)); |
3843 | now = (unsigned long) net_uptime(); |
3844 | if (now < mne->mne_expire) { |
3845 | ifbmne.ifbmne_expire = mne->mne_expire - now; |
3846 | } else { |
3847 | ifbmne.ifbmne_expire = 0; |
3848 | } |
3849 | if ((mne->mne_flags & MNE_FLAGS_IPV6) != 0) { |
3850 | ifbmne.ifbmne_af = AF_INET6; |
3851 | ifbmne.ifbmne_ip6_addr = mne->mne_ip6; |
3852 | } else { |
3853 | ifbmne.ifbmne_af = AF_INET; |
3854 | ifbmne.ifbmne_ip_addr = mne->mne_ip; |
3855 | } |
3856 | memcpy(dst: buf, src: &ifbmne, n: sizeof(ifbmne)); |
3857 | count++; |
3858 | buf += sizeof(ifbmne); |
3859 | len -= sizeof(ifbmne); |
3860 | } |
3861 | *count_p = count; |
3862 | *len_p = len; |
3863 | return buf; |
3864 | } |
3865 | |
3866 | /* |
3867 | * bridge_ioctl_gmnelist() |
3868 | * Perform the get mac_nat_entry list ioctl. |
3869 | * |
3870 | * Note: |
3871 | * The struct ifbrmnelist32 and struct ifbrmnelist64 have the same |
3872 | * field size/layout except for the last field ifbml_buf, the user-supplied |
3873 | * buffer pointer. That is passed in separately via the 'user_addr' |
3874 | * parameter from the respective 32-bit or 64-bit ioctl routine. |
3875 | */ |
3876 | static int |
3877 | bridge_ioctl_gmnelist(struct bridge_softc *sc, struct ifbrmnelist32 *mnl, |
3878 | user_addr_t user_addr) |
3879 | { |
3880 | unsigned int count; |
3881 | char *buf; |
3882 | int error = 0; |
3883 | char *outbuf = NULL; |
3884 | struct mac_nat_entry *mne; |
3885 | unsigned int buflen; |
3886 | unsigned int len; |
3887 | |
3888 | mnl->ifbml_elsize = sizeof(struct ifbrmne); |
3889 | count = 0; |
3890 | LIST_FOREACH(mne, &sc->sc_mne_list, mne_list) { |
3891 | count++; |
3892 | } |
3893 | LIST_FOREACH(mne, &sc->sc_mne_list_v6, mne_list) { |
3894 | count++; |
3895 | } |
3896 | buflen = sizeof(struct ifbrmne) * count; |
3897 | if (buflen == 0 || mnl->ifbml_len == 0) { |
3898 | mnl->ifbml_len = buflen; |
3899 | return error; |
3900 | } |
3901 | BRIDGE_UNLOCK(sc); |
3902 | outbuf = (char *)kalloc_data(buflen, Z_WAITOK | Z_ZERO); |
3903 | BRIDGE_LOCK(sc); |
3904 | count = 0; |
3905 | buf = outbuf; |
3906 | len = min(a: mnl->ifbml_len, b: buflen); |
3907 | buf = bridge_mac_nat_entry_out(list: &sc->sc_mne_list, count_p: &count, buf, len_p: &len); |
3908 | buf = bridge_mac_nat_entry_out(list: &sc->sc_mne_list_v6, count_p: &count, buf, len_p: &len); |
3909 | mnl->ifbml_len = count * sizeof(struct ifbrmne); |
3910 | BRIDGE_UNLOCK(sc); |
3911 | error = copyout(outbuf, user_addr, mnl->ifbml_len); |
3912 | kfree_data(outbuf, buflen); |
3913 | BRIDGE_LOCK(sc); |
3914 | return error; |
3915 | } |
3916 | |
3917 | static int |
3918 | bridge_ioctl_gmnelist64(struct bridge_softc *sc, void *arg) |
3919 | { |
3920 | struct ifbrmnelist64 *mnl = arg; |
3921 | |
3922 | return bridge_ioctl_gmnelist(sc, mnl: arg, user_addr: mnl->ifbml_buf); |
3923 | } |
3924 | |
3925 | static int |
3926 | bridge_ioctl_gmnelist32(struct bridge_softc *sc, void *arg) |
3927 | { |
3928 | struct ifbrmnelist32 *mnl = arg; |
3929 | |
3930 | return bridge_ioctl_gmnelist(sc, mnl: arg, |
3931 | CAST_USER_ADDR_T(mnl->ifbml_buf)); |
3932 | } |
3933 | |
3934 | /* |
3935 | * bridge_ioctl_gifstats() |
3936 | * Return per-member stats. |
3937 | * |
3938 | * Note: |
3939 | * The ifbrmreq32 and ifbrmreq64 structures have the same |
3940 | * field size/layout except for the last field brmr_buf, the user-supplied |
3941 | * buffer pointer. That is passed in separately via the 'user_addr' |
3942 | * parameter from the respective 32-bit or 64-bit ioctl routine. |
3943 | */ |
3944 | static int |
3945 | bridge_ioctl_gifstats(struct bridge_softc *sc, struct ifbrmreq32 *mreq, |
3946 | user_addr_t user_addr) |
3947 | { |
3948 | struct bridge_iflist *bif; |
3949 | int error = 0; |
3950 | unsigned int buflen; |
3951 | |
3952 | bif = bridge_lookup_member(sc, name: mreq->brmr_ifname); |
3953 | if (bif == NULL) { |
3954 | error = ENOENT; |
3955 | goto done; |
3956 | } |
3957 | |
3958 | buflen = mreq->brmr_elsize = sizeof(struct ifbrmstats); |
3959 | if (buflen == 0 || mreq->brmr_len == 0) { |
3960 | <
---|