1 | /* |
2 | * Copyright (c) 2000-2024 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 | /* |
30 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
31 | * All rights reserved. |
32 | * |
33 | * Redistribution and use in source and binary forms, with or without |
34 | * modification, are permitted provided that the following conditions |
35 | * are met: |
36 | * 1. Redistributions of source code must retain the above copyright |
37 | * notice, this list of conditions and the following disclaimer. |
38 | * 2. Redistributions in binary form must reproduce the above copyright |
39 | * notice, this list of conditions and the following disclaimer in the |
40 | * documentation and/or other materials provided with the distribution. |
41 | * 3. Neither the name of the project nor the names of its contributors |
42 | * may be used to endorse or promote products derived from this software |
43 | * without specific prior written permission. |
44 | * |
45 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
46 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
47 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
48 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
49 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
50 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
51 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
52 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
53 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
54 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
55 | * SUCH DAMAGE. |
56 | */ |
57 | |
58 | /* |
59 | * Copyright (c) 1982, 1986, 1993 |
60 | * The Regents of the University of California. All rights reserved. |
61 | * |
62 | * Redistribution and use in source and binary forms, with or without |
63 | * modification, are permitted provided that the following conditions |
64 | * are met: |
65 | * 1. Redistributions of source code must retain the above copyright |
66 | * notice, this list of conditions and the following disclaimer. |
67 | * 2. Redistributions in binary form must reproduce the above copyright |
68 | * notice, this list of conditions and the following disclaimer in the |
69 | * documentation and/or other materials provided with the distribution. |
70 | * 3. All advertising materials mentioning features or use of this software |
71 | * must display the following acknowledgement: |
72 | * This product includes software developed by the University of |
73 | * California, Berkeley and its contributors. |
74 | * 4. Neither the name of the University nor the names of its contributors |
75 | * may be used to endorse or promote products derived from this software |
76 | * without specific prior written permission. |
77 | * |
78 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
79 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
80 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
81 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
82 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
83 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
84 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
85 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
86 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
87 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
88 | * SUCH DAMAGE. |
89 | * |
90 | * @(#)ip_var.h 8.1 (Berkeley) 6/10/93 |
91 | */ |
92 | |
93 | #ifndef _NETINET6_IP6_VAR_H_ |
94 | #define _NETINET6_IP6_VAR_H_ |
95 | #include <sys/appleapiopts.h> |
96 | |
97 | #ifdef BSD_KERNEL_PRIVATE |
98 | #include <kern/zalloc.h> |
99 | #include <net/ethernet.h> |
100 | |
101 | struct ip6asfrag; |
102 | /* |
103 | * IP6 reassembly queue structure. Each fragment |
104 | * being reassembled is attached to one of these structures. |
105 | */ |
106 | struct ip6q { |
107 | struct ip6asfrag *ip6q_down; |
108 | struct ip6asfrag *ip6q_up; |
109 | u_int32_t ip6q_ident; |
110 | u_int8_t ip6q_nxt; |
111 | u_int8_t ip6q_ecn; |
112 | u_int8_t ip6q_ttl; |
113 | struct in6_addr ip6q_src, ip6q_dst; |
114 | struct ip6q *ip6q_next; |
115 | struct ip6q *ip6q_prev; |
116 | int ip6q_unfrglen; /* len of unfragmentable part */ |
117 | int ip6q_nfrag; /* # of fragments */ |
118 | uint32_t ip6q_csum_flags; /* checksum flags */ |
119 | uint32_t ip6q_csum; /* partial checksum value */ |
120 | uint32_t ip6q_flags; |
121 | uint32_t ip6q_dst_ifscope, ip6q_src_ifscope; |
122 | #define IP6QF_DIRTY 0x00000001 |
123 | }; |
124 | |
125 | struct ip6_moptions { |
126 | decl_lck_mtx_data(, im6o_lock); |
127 | uint32_t im6o_refcnt; /* ref count */ |
128 | uint32_t im6o_debug; /* see ifa_debug flags */ |
129 | struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */ |
130 | u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */ |
131 | u_char im6o_multicast_loop; /* 1 >= hear sends if a member */ |
132 | u_short im6o_num_memberships; /* no. memberships this socket */ |
133 | u_short im6o_max_memberships; /* max memberships this socket */ |
134 | struct in6_multi **__counted_by(im6o_max_memberships) im6o_membership; |
135 | /* group memberships */ |
136 | struct in6_mfilter *__counted_by(im6o_max_memberships) im6o_mfilters; |
137 | /* source filters */ |
138 | void (*im6o_trace) /* callback fn for tracing refs */ |
139 | (struct ip6_moptions *, int); |
140 | }; |
141 | |
142 | #define IM6O_LOCK_ASSERT_HELD(_im6o) \ |
143 | LCK_MTX_ASSERT(&(_im6o)->im6o_lock, LCK_MTX_ASSERT_OWNED) |
144 | |
145 | #define IM6O_LOCK_ASSERT_NOTHELD(_im6o) \ |
146 | LCK_MTX_ASSERT(&(_im6o)->im6o_lock, LCK_MTX_ASSERT_NOTOWNED) |
147 | |
148 | #define IM6O_LOCK(_im6o) \ |
149 | lck_mtx_lock(&(_im6o)->im6o_lock) |
150 | |
151 | #define IM6O_LOCK_SPIN(_im6o) \ |
152 | lck_mtx_lock_spin(&(_im6o)->im6o_lock) |
153 | |
154 | #define IM6O_CONVERT_LOCK(_im6o) do { \ |
155 | IM6O_LOCK_ASSERT_HELD(_im6o); \ |
156 | lck_mtx_convert_spin(&(_im6o)->im6o_lock); \ |
157 | } while (0) |
158 | |
159 | #define IM6O_UNLOCK(_im6o) \ |
160 | lck_mtx_unlock(&(_im6o)->im6o_lock) |
161 | |
162 | #define IM6O_ADDREF(_im6o) \ |
163 | im6o_addref(_im6o, 0) |
164 | |
165 | #define IM6O_ADDREF_LOCKED(_im6o) \ |
166 | im6o_addref(_im6o, 1) |
167 | |
168 | #define IM6O_REMREF(_im6o) \ |
169 | im6o_remref(_im6o) |
170 | |
171 | struct ip6_exthdrs { |
172 | struct mbuf *ip6e_ip6; |
173 | struct mbuf *ip6e_hbh; |
174 | struct mbuf *ip6e_dest1; |
175 | struct mbuf *ip6e_rthdr; |
176 | struct mbuf *ip6e_dest2; |
177 | boolean_t merged; |
178 | }; |
179 | |
180 | /* |
181 | * Control options for outgoing packets |
182 | */ |
183 | |
184 | /* Routing header related info */ |
185 | struct ip6po_rhinfo { |
186 | struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */ |
187 | struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */ |
188 | }; |
189 | #define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr |
190 | #define ip6po_route ip6po_rhinfo.ip6po_rhi_route |
191 | |
192 | /* Nexthop related info */ |
193 | struct ip6po_nhinfo { |
194 | struct sockaddr *ip6po_nhi_nexthop; |
195 | struct route_in6 ip6po_nhi_route; /* Route to the nexthop */ |
196 | }; |
197 | #define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop |
198 | #define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_route |
199 | |
200 | struct ip6_pktopts { |
201 | struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */ |
202 | int ip6po_hlim; /* Hoplimit for outgoing packets */ |
203 | |
204 | /* Outgoing IF/address information */ |
205 | struct in6_pktinfo *ip6po_pktinfo; |
206 | |
207 | /* Next-hop address information */ |
208 | struct ip6po_nhinfo ip6po_nhinfo; |
209 | |
210 | struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */ |
211 | |
212 | /* Destination options header (before a routing header) */ |
213 | struct ip6_dest *ip6po_dest1; |
214 | |
215 | /* Routing header related info. */ |
216 | struct ip6po_rhinfo ip6po_rhinfo; |
217 | |
218 | /* Destination options header (after a routing header) */ |
219 | struct ip6_dest *ip6po_dest2; |
220 | |
221 | int ip6po_tclass; /* traffic class */ |
222 | |
223 | int ip6po_minmtu; /* fragment vs PMTU discovery policy */ |
224 | #define IP6PO_MINMTU_MCASTONLY -1 /* default; send at min MTU for multicast */ |
225 | #define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */ |
226 | #define IP6PO_MINMTU_ALL 1 /* always send at min MTU */ |
227 | |
228 | /* whether temporary addresses are preferred as source address */ |
229 | int ip6po_prefer_tempaddr; |
230 | |
231 | #define IP6PO_TEMPADDR_SYSTEM -1 /* follow the system default */ |
232 | #define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */ |
233 | #define IP6PO_TEMPADDR_PREFER 1 /* prefer temporary address */ |
234 | |
235 | int ip6po_flags; |
236 | #if 0 /* parameters in this block is obsolete. do not reuse the values. */ |
237 | #define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation. */ |
238 | #define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */ |
239 | #endif |
240 | #define IP6PO_DONTFRAG 0x04 /* no fragmentation (IPV6_DONTFRAG) */ |
241 | #define IP6PO_USECOA 0x08 /* use care of address */ |
242 | }; |
243 | |
244 | /* |
245 | * Control options for incoming packets |
246 | */ |
247 | #endif /* BSD_KERNEL_PRIVATE */ |
248 | |
249 | #define IP6S_SRCRULE_COUNT 16 |
250 | #include <netinet6/scope6_var.h> |
251 | |
252 | struct ip6stat { |
253 | u_quad_t ip6s_total; /* total packets received */ |
254 | u_quad_t ip6s_tooshort; /* packet too short */ |
255 | u_quad_t ip6s_toosmall; /* not enough data */ |
256 | u_quad_t ip6s_fragments; /* fragments received */ |
257 | u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */ |
258 | u_quad_t ip6s_fragtimeout; /* fragments timed out */ |
259 | u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */ |
260 | u_quad_t ip6s_forward; /* packets forwarded */ |
261 | u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */ |
262 | u_quad_t ip6s_redirectsent; /* packets forwarded on same net */ |
263 | u_quad_t ip6s_delivered; /* datagrams delivered to upper level */ |
264 | u_quad_t ip6s_localout; /* total ip packets generated here */ |
265 | u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */ |
266 | u_quad_t ip6s_reassembled; /* total packets reassembled ok */ |
267 | u_quad_t ip6s_atmfrag_rcvd; /* atomic fragments received */ |
268 | u_quad_t ip6s_fragmented; /* datagrams successfully fragmented */ |
269 | u_quad_t ip6s_ofragments; /* output fragments created */ |
270 | u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */ |
271 | u_quad_t ip6s_badoptions; /* error in option processing */ |
272 | u_quad_t ip6s_noroute; /* packets discarded due to no route */ |
273 | u_quad_t ip6s_badvers; /* ip6 version != 6 */ |
274 | u_quad_t ip6s_rawout; /* total raw ip packets generated */ |
275 | u_quad_t ip6s_badscope; /* scope error */ |
276 | u_quad_t ip6s_notmember; /* don't join this multicast group */ |
277 | u_quad_t ip6s_nxthist[256]; /* next header history */ |
278 | u_quad_t ip6s_m1; /* one mbuf */ |
279 | u_quad_t ip6s_m2m[32]; /* two or more mbuf */ |
280 | u_quad_t ip6s_mext1; /* one ext mbuf */ |
281 | u_quad_t ip6s_mext2m; /* two or more ext mbuf */ |
282 | u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */ |
283 | u_quad_t ip6s_nogif; /* no match gif found */ |
284 | u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */ |
285 | |
286 | /* |
287 | * statistics for improvement of the source address selection |
288 | * algorithm: |
289 | */ |
290 | /* number of times that address selection fails */ |
291 | u_quad_t ip6s_sources_none; |
292 | /* number of times that an address on the outgoing I/F is chosen */ |
293 | u_quad_t ip6s_sources_sameif[SCOPE6_ID_MAX]; |
294 | /* number of times that an address on a non-outgoing I/F is chosen */ |
295 | u_quad_t ip6s_sources_otherif[SCOPE6_ID_MAX]; |
296 | /* |
297 | * number of times that an address that has the same scope |
298 | * from the destination is chosen. |
299 | */ |
300 | u_quad_t ip6s_sources_samescope[SCOPE6_ID_MAX]; |
301 | /* |
302 | * number of times that an address that has a different scope |
303 | * from the destination is chosen. |
304 | */ |
305 | u_quad_t ip6s_sources_otherscope[SCOPE6_ID_MAX]; |
306 | /* number of times that a deprecated address is chosen */ |
307 | u_quad_t ip6s_sources_deprecated[SCOPE6_ID_MAX]; |
308 | |
309 | u_quad_t ip6s_forward_cachehit; |
310 | u_quad_t ip6s_forward_cachemiss; |
311 | |
312 | /* number of times that each rule of source selection is applied. */ |
313 | u_quad_t ip6s_sources_rule[IP6S_SRCRULE_COUNT]; |
314 | |
315 | /* number of times we ignored address on expensive secondary interfaces */ |
316 | u_quad_t ip6s_sources_skip_expensive_secondary_if; |
317 | |
318 | /* pkt dropped, no mbufs for control data */ |
319 | u_quad_t ip6s_pktdropcntrl; |
320 | |
321 | /* total packets trimmed/adjusted */ |
322 | u_quad_t ip6s_adj; |
323 | /* hwcksum info discarded during adjustment */ |
324 | u_quad_t ip6s_adj_hwcsum_clr; |
325 | |
326 | /* duplicate address detection collisions */ |
327 | u_quad_t ip6s_dad_collide; |
328 | |
329 | /* DAD NS looped back */ |
330 | u_quad_t ip6s_dad_loopcount; |
331 | |
332 | /* NECP policy related drop */ |
333 | u_quad_t ip6s_necp_policy_drop; |
334 | |
335 | /* CLAT46 stats */ |
336 | u_quad_t ip6s_clat464_in_tooshort_drop; |
337 | u_quad_t ip6s_clat464_in_nov6addr_drop; |
338 | u_quad_t ip6s_clat464_in_nov4addr_drop; |
339 | u_quad_t ip6s_clat464_in_v4synthfail_drop; |
340 | u_quad_t ip6s_clat464_in_64transfail_drop; |
341 | u_quad_t ip6s_clat464_in_64proto_transfail_drop; |
342 | u_quad_t ip6s_clat464_in_64frag_transfail_drop; |
343 | u_quad_t ip6s_clat464_in_invalpbuf_drop; |
344 | u_quad_t ip6s_clat464_in_success; |
345 | u_quad_t ip6s_clat464_in_drop; |
346 | u_quad_t ip6s_clat464_in_v4_drop; |
347 | |
348 | u_quad_t ip6s_clat464_out_nov6addr_drop; |
349 | u_quad_t ip6s_clat464_out_v6synthfail_drop; |
350 | u_quad_t ip6s_clat464_out_46transfail_drop; |
351 | u_quad_t ip6s_clat464_out_46proto_transfail_drop; |
352 | u_quad_t ip6s_clat464_out_46frag_transfail_drop; |
353 | u_quad_t ip6s_clat464_out_invalpbuf_drop; |
354 | u_quad_t ip6s_clat464_out_success; |
355 | u_quad_t ip6s_clat464_out_drop; |
356 | |
357 | u_quad_t ip6s_clat464_v6addr_conffail; |
358 | u_quad_t ip6s_clat464_plat64_pfx_setfail; |
359 | u_quad_t ip6s_clat464_plat64_pfx_getfail; |
360 | |
361 | u_quad_t ip6s_overlap_frag_drop; |
362 | |
363 | u_quad_t ip6s_rcv_if_weak_match; |
364 | u_quad_t ip6s_rcv_if_no_match; |
365 | }; |
366 | |
367 | enum ip6s_sources_rule_index { |
368 | IP6S_SRCRULE_0, IP6S_SRCRULE_1, IP6S_SRCRULE_2, IP6S_SRCRULE_3, IP6S_SRCRULE_4, |
369 | IP6S_SRCRULE_5, IP6S_SRCRULE_5_5, IP6S_SRCRULE_6, IP6S_SRCRULE_7, |
370 | IP6S_SRCRULE_7x, IP6S_SRCRULE_8 |
371 | }; |
372 | |
373 | #ifdef BSD_KERNEL_PRIVATE |
374 | /* |
375 | * IPv6 onion peeling state. |
376 | * |
377 | * This is currently allocated for packets destined to the all-nodes |
378 | * multicast address over Ethernet. IPv6 destination address information |
379 | * is now stored in the mbuf itself. |
380 | */ |
381 | struct ip6aux { |
382 | u_int32_t ip6a_flags; |
383 | #define IP6A_HASEEN 0x01 /* HA was present */ |
384 | |
385 | #ifdef notyet |
386 | #define IP6A_SWAP 0x02 /* swapped home/care-of on packet */ |
387 | #define IP6A_BRUID 0x04 /* BR Unique Identifier was present */ |
388 | #define IP6A_RTALERTSEEN 0x08 /* rtalert present */ |
389 | |
390 | /* ip6.ip6_src */ |
391 | struct in6_addr ip6a_careof; /* care-of address of the peer */ |
392 | struct in6_addr ip6a_home; /* home address of the peer */ |
393 | u_int16_t ip6a_bruid; /* BR unique identifier */ |
394 | |
395 | /* rtalert */ |
396 | u_int16_t ip6a_rtalert; /* rtalert option value */ |
397 | #endif /* notyet */ |
398 | |
399 | /* ether source address if all-nodes multicast destination */ |
400 | u_char ip6a_ehsrc[ETHER_ADDR_LEN]; |
401 | }; |
402 | |
403 | /* flags passed to ip6_output as last parameter */ |
404 | #define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */ |
405 | #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ |
406 | #define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */ |
407 | #define IPV6_FLAG_NOSRCIFSEL 0x80 /* bypas source address selection */ |
408 | #define IPV6_OUTARGS 0x100 /* has ancillary output info */ |
409 | |
410 | #ifdef BSD_KERNEL_PRIVATE |
411 | #define IP6_HDR_ALIGNED_P(_ip6) ((((uintptr_t)(_ip6)) & ((uintptr_t)3)) == 0) |
412 | |
413 | /* |
414 | * On platforms which require strict alignment (currently for anything but |
415 | * i386 or x86_64 or arm64), this macro checks whether the pointer to the IP header |
416 | * is 32-bit aligned, and assert otherwise. |
417 | */ |
418 | #if defined(__i386__) || defined(__x86_64__) || defined(__arm64__) |
419 | #define IP6_HDR_STRICT_ALIGNMENT_CHECK(_ip6) do { } while (0) |
420 | #else /* !__i386__ && !__x86_64__ && !__arm64__ */ |
421 | #define IP6_HDR_STRICT_ALIGNMENT_CHECK(_ip6) do { \ |
422 | if (!IP_HDR_ALIGNED_P(_ip6)) { \ |
423 | panic_plain("\n%s: Unaligned IPv6 header %p\n", \ |
424 | __func__, _ip6); \ |
425 | } \ |
426 | } while (0) |
427 | #endif /* !__i386__ && !__x86_64__ && !__arm64__ */ |
428 | #endif /* BSD_KERNEL_PRIVATE */ |
429 | |
430 | #include <net/flowadv.h> |
431 | |
432 | /* |
433 | * Extra information passed to ip6_output when IPV6_OUTARGS is set. |
434 | */ |
435 | struct ip6_out_args { |
436 | unsigned int ip6oa_boundif; /* bound outgoing interface */ |
437 | struct flowadv ip6oa_flowadv; /* flow advisory code */ |
438 | u_int32_t ip6oa_flags; /* IP6OAF flags (see below) */ |
439 | #define IP6OAF_SELECT_SRCIF 0x00000001 /* src interface selection */ |
440 | #define IP6OAF_BOUND_IF 0x00000002 /* boundif value is valid */ |
441 | #define IP6OAF_BOUND_SRCADDR 0x00000004 /* bound to src address */ |
442 | #define IP6OAF_NO_CELLULAR 0x00000010 /* skip IFT_CELLULAR */ |
443 | #define IP6OAF_NO_EXPENSIVE 0x00000020 /* skip IFEF_EXPENSIVE */ |
444 | #define IP6OAF_AWDL_UNRESTRICTED 0x00000040 /* privileged AWDL */ |
445 | #define IP6OAF_QOSMARKING_ALLOWED 0x00000080 /* policy allows Fastlane DSCP marking */ |
446 | #define IP6OAF_INTCOPROC_ALLOWED 0x00000100 /* access to internal coproc interfaces */ |
447 | #define IP6OAF_NO_LOW_POWER 0x00000200 /* skip low power */ |
448 | #define IP6OAF_NO_CONSTRAINED 0x00000400 /* skip IFXF_CONSTRAINED */ |
449 | #define IP6OAF_SKIP_PF 0x00000800 /* skip PF */ |
450 | #define IP6OAF_DONT_FRAG 0x00001000 /* Don't fragment */ |
451 | #define IP6OAF_REDO_QOSMARKING_POLICY 0x00002000 /* Re-evaluate QOS marking policy */ |
452 | #define IP6OAF_R_IFDENIED 0x00004000 /* return flag: denied access to interface */ |
453 | #define IP6OAF_MANAGEMENT_ALLOWED 0x00004000 /* access to management to interface */ |
454 | int ip6oa_sotc; /* traffic class for Fastlane DSCP mapping */ |
455 | int ip6oa_netsvctype; |
456 | int32_t qos_marking_gencount; |
457 | }; |
458 | |
459 | #define IP6OAF_RET_MASK (IP6OAF_R_IFDENIED) |
460 | |
461 | extern struct ip6stat ip6stat; /* statistics */ |
462 | extern int ip6_defhlim; /* default hop limit */ |
463 | extern int ip6_defmcasthlim; /* default multicast hop limit */ |
464 | extern int ip6_forwarding; /* act as router? */ |
465 | extern int ip6_gif_hlim; /* Hop limit for gif encap packet */ |
466 | extern int ip6_use_deprecated; /* allow deprecated addr as source */ |
467 | extern int ip6_rr_prune; /* router renumbering prefix */ |
468 | /* walk list every 5 sec. */ |
469 | extern int ip6_mcast_pmtu; /* enable pMTU discovery for multicast? */ |
470 | #define ip6_mapped_addr_on (!ip6_v6only) |
471 | extern int ip6_v6only; |
472 | |
473 | extern int ip6_neighborgcthresh; /* Threshold # of NDP entries for GC */ |
474 | extern int ip6_maxifprefixes; /* Max acceptable prefixes via RA per IF */ |
475 | extern int ip6_maxifdefrouters; /* Max acceptable def routers via RA */ |
476 | extern int ip6_maxdynroutes; /* Max # of routes created via redirect */ |
477 | extern int ip6_sendredirects; /* send IP redirects when forwarding? */ |
478 | extern int ip6_accept_rtadv; /* deprecated */ |
479 | extern int ip6_log_interval; |
480 | extern uint64_t ip6_log_time; |
481 | extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ |
482 | extern int ip6_dad_count; /* DupAddrDetectionTransmits */ |
483 | |
484 | /* RFC4193 Unique Local Unicast Prefixes only */ |
485 | extern int ip6_only_allow_rfc4193_prefix; |
486 | |
487 | extern int ip6_auto_flowlabel; |
488 | extern int ip6_auto_linklocal; |
489 | |
490 | extern int ip6_anonportmin; /* minimum ephemeral port */ |
491 | extern int ip6_anonportmax; /* maximum ephemeral port */ |
492 | extern int ip6_lowportmin; /* minimum reserved port */ |
493 | extern int ip6_lowportmax; /* maximum reserved port */ |
494 | |
495 | extern int ip6_use_tempaddr; /* whether to use temporary addresses. */ |
496 | extern int ip6_ula_use_tempaddr; /* whether to use temporary ULA addresses */ |
497 | |
498 | /* whether to prefer temporary addresses in the source address selection */ |
499 | extern int ip6_prefer_tempaddr; |
500 | |
501 | /* whether to use the default scope zone when unspecified */ |
502 | extern int ip6_use_defzone; |
503 | |
504 | /* how many times to try allocating cga address after conflict */ |
505 | extern int ip6_cga_conflict_retries; |
506 | #define IPV6_CGA_CONFLICT_RETRIES_DEFAULT 3 |
507 | #define IPV6_CGA_CONFLICT_RETRIES_MAX 10 |
508 | |
509 | extern struct pr_usrreqs rip6_usrreqs; |
510 | extern struct pr_usrreqs icmp6_dgram_usrreqs; |
511 | |
512 | struct sockopt; |
513 | struct inpcb; |
514 | struct ip6_hdr; |
515 | struct in6_ifaddr; |
516 | struct ip6protosw; |
517 | struct domain; |
518 | |
519 | extern int icmp6_ctloutput(struct socket *, struct sockopt *); |
520 | extern int icmp6_dgram_ctloutput(struct socket *, struct sockopt *); |
521 | extern int icmp6_dgram_send(struct socket *, int, struct mbuf *, |
522 | struct sockaddr *, struct mbuf *, struct proc *); |
523 | extern int icmp6_dgram_attach(struct socket *, int, struct proc *); |
524 | |
525 | extern void ip6_register_m_tag(void); |
526 | |
527 | extern void ip6_init(struct ip6protosw *, struct domain *); |
528 | extern void ip6_input(struct mbuf *); |
529 | extern void ip6_setsrcifaddr_info(struct mbuf *, uint32_t, struct in6_ifaddr *); |
530 | extern void ip6_setdstifaddr_info(struct mbuf *, uint32_t, struct in6_ifaddr *); |
531 | extern int ip6_getsrcifaddr_info(struct mbuf *, uint32_t *, uint32_t *); |
532 | extern int ip6_getdstifaddr_info(struct mbuf *, uint32_t *, uint32_t *); |
533 | extern uint32_t ip6_input_getsrcifscope(struct mbuf *); |
534 | extern uint32_t ip6_input_getdstifscope(struct mbuf *); |
535 | extern void ip6_output_setsrcifscope(struct mbuf *, uint32_t, struct in6_ifaddr *); |
536 | extern void ip6_output_setdstifscope(struct mbuf *, uint32_t, struct in6_ifaddr *); |
537 | extern uint32_t ip6_output_getsrcifscope(struct mbuf *); |
538 | extern uint32_t ip6_output_getdstifscope(struct mbuf *); |
539 | |
540 | extern void ip6_freepcbopts(struct ip6_pktopts *); |
541 | extern int ip6_unknown_opt(u_int8_t *, struct mbuf *, size_t); |
542 | extern char *ip6_get_prevhdr(struct mbuf *, int); |
543 | extern int ip6_nexthdr(struct mbuf *, int, int, int *); |
544 | extern int ip6_lasthdr(struct mbuf *, int, int, int *); |
545 | extern boolean_t ip6_pkt_has_ulp(struct mbuf *m); |
546 | |
547 | extern void ip6_moptions_init(void); |
548 | extern struct ip6_moptions *ip6_allocmoptions(zalloc_flags_t); |
549 | extern void im6o_addref(struct ip6_moptions *, int); |
550 | extern void im6o_remref(struct ip6_moptions *); |
551 | |
552 | extern struct ip6aux *ip6_addaux(struct mbuf *); |
553 | extern struct ip6aux *ip6_findaux(struct mbuf *); |
554 | extern void ip6_delaux(struct mbuf *); |
555 | |
556 | extern int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *, |
557 | u_int32_t *); |
558 | extern struct mbuf **ip6_savecontrol_v4(struct inpcb *, struct mbuf *, |
559 | struct mbuf **, int *); |
560 | extern int ip6_savecontrol(struct inpcb *, struct mbuf *, struct mbuf **); |
561 | extern struct mbuf *ip6_forward(struct mbuf *, struct route_in6 *, int); |
562 | extern void ip6_notify_pmtu(struct inpcb *, struct sockaddr_in6 *, u_int32_t *); |
563 | extern void ip6_mloopback(struct ifnet *, struct ifnet *, struct mbuf *, |
564 | struct sockaddr_in6 *, uint32_t, int32_t); |
565 | extern int ip6_output(struct mbuf *, struct ip6_pktopts *, struct route_in6 *, |
566 | int, struct ip6_moptions *, struct ifnet **, struct ip6_out_args *); |
567 | extern int ip6_output_list(struct mbuf *, int, struct ip6_pktopts *, |
568 | struct route_in6 *, int, struct ip6_moptions *, struct ifnet **, |
569 | struct ip6_out_args *); |
570 | extern int ip6_ctloutput(struct socket *, struct sockopt *); |
571 | extern int ip6_raw_ctloutput(struct socket *, struct sockopt *); |
572 | extern void ip6_initpktopts(struct ip6_pktopts *); |
573 | extern int ip6_setpktoptions(struct mbuf *, struct ip6_pktopts *, int, int); |
574 | extern void ip6_clearpktopts(struct ip6_pktopts *, int); |
575 | extern struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, zalloc_flags_t); |
576 | extern int ip6_optlen(struct inpcb *); |
577 | extern void ip6_drain(void); |
578 | extern int ip6_do_fragmentation(struct mbuf **, uint32_t, struct ifnet *, uint32_t, |
579 | struct ip6_hdr *, uint8_t *, uint32_t, int, uint32_t); |
580 | |
581 | extern int route6_input(struct mbuf **, int *, int); |
582 | |
583 | extern void frag6_init(void); |
584 | extern int frag6_input(struct mbuf **, int *, int); |
585 | extern void frag6_drain(void); |
586 | |
587 | extern int rip6_input(struct mbuf **, int *, int); |
588 | extern void rip6_ctlinput(int, struct sockaddr *, void *, struct ifnet *); |
589 | extern int rip6_ctloutput(struct socket *so, struct sockopt *sopt); |
590 | extern int rip6_output(struct mbuf *, struct socket *, struct sockaddr_in6 *, |
591 | struct mbuf *, int); |
592 | |
593 | extern int dest6_input(struct mbuf **, int *, int); |
594 | /* |
595 | * IPv6 source address selection hints |
596 | */ |
597 | #define IPV6_SRCSEL_HINT_PREFER_TMPADDR 0x00000001 |
598 | |
599 | extern struct ifaddr * in6_selectsrc_core_ifa(struct sockaddr_in6 *, struct ifnet *, int); |
600 | extern struct in6_addr * in6_selectsrc_core(struct sockaddr_in6 *, |
601 | uint32_t, struct ifnet *, int, struct in6_addr *, |
602 | struct ifnet **, int *, struct ifaddr **, struct route_in6 *, boolean_t); |
603 | extern struct in6_addr *in6_selectsrc(struct sockaddr_in6 *, |
604 | struct ip6_pktopts *, struct inpcb *, struct route_in6 *, |
605 | struct ifnet **, struct in6_addr *, unsigned int, int *); |
606 | extern struct in6_addrpolicy *in6_addrsel_lookup_policy(struct sockaddr_in6 *); |
607 | extern int in6_selectroute(struct sockaddr_in6 *, struct sockaddr_in6 *, |
608 | struct ip6_pktopts *, struct ip6_moptions *, struct in6_ifaddr **, |
609 | struct route_in6 *, struct ifnet **, struct rtentry **, int, |
610 | struct ip6_out_args *); |
611 | extern int ip6_setpktopts(struct mbuf *control, struct ip6_pktopts *opt, |
612 | struct ip6_pktopts *stickyopt, int uproto); |
613 | extern uint32_t ip6_randomid(uint64_t); |
614 | extern uint32_t ip6_randomflowlabel(void); |
615 | #endif /* BSD_KERNEL_PRIVATE */ |
616 | #endif /* !_NETINET6_IP6_VAR_H_ */ |
617 | |