1 /* 2 * Copyright (c) 2000-2021 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 **im6o_membership; /* group memberships */ 135 struct in6_mfilter *im6o_mfilters; /* source filters */ 136 void (*im6o_trace) /* callback fn for tracing refs */ 137 (struct ip6_moptions *, int); 138 }; 139 140 #define IM6O_LOCK_ASSERT_HELD(_im6o) \ 141 LCK_MTX_ASSERT(&(_im6o)->im6o_lock, LCK_MTX_ASSERT_OWNED) 142 143 #define IM6O_LOCK_ASSERT_NOTHELD(_im6o) \ 144 LCK_MTX_ASSERT(&(_im6o)->im6o_lock, LCK_MTX_ASSERT_NOTOWNED) 145 146 #define IM6O_LOCK(_im6o) \ 147 lck_mtx_lock(&(_im6o)->im6o_lock) 148 149 #define IM6O_LOCK_SPIN(_im6o) \ 150 lck_mtx_lock_spin(&(_im6o)->im6o_lock) 151 152 #define IM6O_CONVERT_LOCK(_im6o) do { \ 153 IM6O_LOCK_ASSERT_HELD(_im6o); \ 154 lck_mtx_convert_spin(&(_im6o)->im6o_lock); \ 155 } while (0) 156 157 #define IM6O_UNLOCK(_im6o) \ 158 lck_mtx_unlock(&(_im6o)->im6o_lock) 159 160 #define IM6O_ADDREF(_im6o) \ 161 im6o_addref(_im6o, 0) 162 163 #define IM6O_ADDREF_LOCKED(_im6o) \ 164 im6o_addref(_im6o, 1) 165 166 #define IM6O_REMREF(_im6o) \ 167 im6o_remref(_im6o) 168 169 struct ip6_exthdrs { 170 struct mbuf *ip6e_ip6; 171 struct mbuf *ip6e_hbh; 172 struct mbuf *ip6e_dest1; 173 struct mbuf *ip6e_rthdr; 174 struct mbuf *ip6e_dest2; 175 boolean_t merged; 176 }; 177 178 /* 179 * Control options for outgoing packets 180 */ 181 182 /* Routing header related info */ 183 struct ip6po_rhinfo { 184 struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */ 185 struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */ 186 }; 187 #define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr 188 #define ip6po_route ip6po_rhinfo.ip6po_rhi_route 189 190 /* Nexthop related info */ 191 struct ip6po_nhinfo { 192 struct sockaddr *ip6po_nhi_nexthop; 193 struct route_in6 ip6po_nhi_route; /* Route to the nexthop */ 194 }; 195 #define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop 196 #define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_route 197 198 struct ip6_pktopts { 199 struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */ 200 int ip6po_hlim; /* Hoplimit for outgoing packets */ 201 202 /* Outgoing IF/address information */ 203 struct in6_pktinfo *ip6po_pktinfo; 204 205 /* Next-hop address information */ 206 struct ip6po_nhinfo ip6po_nhinfo; 207 208 struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */ 209 210 /* Destination options header (before a routing header) */ 211 struct ip6_dest *ip6po_dest1; 212 213 /* Routing header related info. */ 214 struct ip6po_rhinfo ip6po_rhinfo; 215 216 /* Destination options header (after a routing header) */ 217 struct ip6_dest *ip6po_dest2; 218 219 int ip6po_tclass; /* traffic class */ 220 221 int ip6po_minmtu; /* fragment vs PMTU discovery policy */ 222 #define IP6PO_MINMTU_MCASTONLY -1 /* default; send at min MTU for multicast */ 223 #define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */ 224 #define IP6PO_MINMTU_ALL 1 /* always send at min MTU */ 225 226 /* whether temporary addresses are preferred as source address */ 227 int ip6po_prefer_tempaddr; 228 229 #define IP6PO_TEMPADDR_SYSTEM -1 /* follow the system default */ 230 #define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */ 231 #define IP6PO_TEMPADDR_PREFER 1 /* prefer temporary address */ 232 233 int ip6po_flags; 234 #if 0 /* parameters in this block is obsolete. do not reuse the values. */ 235 #define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation. */ 236 #define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */ 237 #endif 238 #define IP6PO_DONTFRAG 0x04 /* no fragmentation (IPV6_DONTFRAG) */ 239 #define IP6PO_USECOA 0x08 /* use care of address */ 240 }; 241 242 /* 243 * Control options for incoming packets 244 */ 245 #endif /* BSD_KERNEL_PRIVATE */ 246 247 #define IP6S_SRCRULE_COUNT 16 248 #include <netinet6/scope6_var.h> 249 250 struct ip6stat { 251 u_quad_t ip6s_total; /* total packets received */ 252 u_quad_t ip6s_tooshort; /* packet too short */ 253 u_quad_t ip6s_toosmall; /* not enough data */ 254 u_quad_t ip6s_fragments; /* fragments received */ 255 u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */ 256 u_quad_t ip6s_fragtimeout; /* fragments timed out */ 257 u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */ 258 u_quad_t ip6s_forward; /* packets forwarded */ 259 u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */ 260 u_quad_t ip6s_redirectsent; /* packets forwarded on same net */ 261 u_quad_t ip6s_delivered; /* datagrams delivered to upper level */ 262 u_quad_t ip6s_localout; /* total ip packets generated here */ 263 u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */ 264 u_quad_t ip6s_reassembled; /* total packets reassembled ok */ 265 u_quad_t ip6s_atmfrag_rcvd; /* atomic fragments received */ 266 u_quad_t ip6s_fragmented; /* datagrams successfully fragmented */ 267 u_quad_t ip6s_ofragments; /* output fragments created */ 268 u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */ 269 u_quad_t ip6s_badoptions; /* error in option processing */ 270 u_quad_t ip6s_noroute; /* packets discarded due to no route */ 271 u_quad_t ip6s_badvers; /* ip6 version != 6 */ 272 u_quad_t ip6s_rawout; /* total raw ip packets generated */ 273 u_quad_t ip6s_badscope; /* scope error */ 274 u_quad_t ip6s_notmember; /* don't join this multicast group */ 275 u_quad_t ip6s_nxthist[256]; /* next header history */ 276 u_quad_t ip6s_m1; /* one mbuf */ 277 u_quad_t ip6s_m2m[32]; /* two or more mbuf */ 278 u_quad_t ip6s_mext1; /* one ext mbuf */ 279 u_quad_t ip6s_mext2m; /* two or more ext mbuf */ 280 u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */ 281 u_quad_t ip6s_nogif; /* no match gif found */ 282 u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */ 283 284 /* 285 * statistics for improvement of the source address selection 286 * algorithm: 287 */ 288 /* number of times that address selection fails */ 289 u_quad_t ip6s_sources_none; 290 /* number of times that an address on the outgoing I/F is chosen */ 291 u_quad_t ip6s_sources_sameif[SCOPE6_ID_MAX]; 292 /* number of times that an address on a non-outgoing I/F is chosen */ 293 u_quad_t ip6s_sources_otherif[SCOPE6_ID_MAX]; 294 /* 295 * number of times that an address that has the same scope 296 * from the destination is chosen. 297 */ 298 u_quad_t ip6s_sources_samescope[SCOPE6_ID_MAX]; 299 /* 300 * number of times that an address that has a different scope 301 * from the destination is chosen. 302 */ 303 u_quad_t ip6s_sources_otherscope[SCOPE6_ID_MAX]; 304 /* number of times that a deprecated address is chosen */ 305 u_quad_t ip6s_sources_deprecated[SCOPE6_ID_MAX]; 306 307 u_quad_t ip6s_forward_cachehit; 308 u_quad_t ip6s_forward_cachemiss; 309 310 /* number of times that each rule of source selection is applied. */ 311 u_quad_t ip6s_sources_rule[IP6S_SRCRULE_COUNT]; 312 313 /* number of times we ignored address on expensive secondary interfaces */ 314 u_quad_t ip6s_sources_skip_expensive_secondary_if; 315 316 /* pkt dropped, no mbufs for control data */ 317 u_quad_t ip6s_pktdropcntrl; 318 319 /* total packets trimmed/adjusted */ 320 u_quad_t ip6s_adj; 321 /* hwcksum info discarded during adjustment */ 322 u_quad_t ip6s_adj_hwcsum_clr; 323 324 /* duplicate address detection collisions */ 325 u_quad_t ip6s_dad_collide; 326 327 /* DAD NS looped back */ 328 u_quad_t ip6s_dad_loopcount; 329 330 /* NECP policy related drop */ 331 u_quad_t ip6s_necp_policy_drop; 332 333 /* CLAT46 stats */ 334 u_quad_t ip6s_clat464_in_tooshort_drop; 335 u_quad_t ip6s_clat464_in_nov6addr_drop; 336 u_quad_t ip6s_clat464_in_nov4addr_drop; 337 u_quad_t ip6s_clat464_in_v4synthfail_drop; 338 u_quad_t ip6s_clat464_in_64transfail_drop; 339 u_quad_t ip6s_clat464_in_64proto_transfail_drop; 340 u_quad_t ip6s_clat464_in_64frag_transfail_drop; 341 u_quad_t ip6s_clat464_in_invalpbuf_drop; 342 u_quad_t ip6s_clat464_in_success; 343 u_quad_t ip6s_clat464_in_drop; 344 u_quad_t ip6s_clat464_in_v4_drop; 345 346 u_quad_t ip6s_clat464_out_nov6addr_drop; 347 u_quad_t ip6s_clat464_out_v6synthfail_drop; 348 u_quad_t ip6s_clat464_out_46transfail_drop; 349 u_quad_t ip6s_clat464_out_46proto_transfail_drop; 350 u_quad_t ip6s_clat464_out_46frag_transfail_drop; 351 u_quad_t ip6s_clat464_out_invalpbuf_drop; 352 u_quad_t ip6s_clat464_out_success; 353 u_quad_t ip6s_clat464_out_drop; 354 355 u_quad_t ip6s_clat464_v6addr_conffail; 356 u_quad_t ip6s_clat464_plat64_pfx_setfail; 357 u_quad_t ip6s_clat464_plat64_pfx_getfail; 358 359 u_quad_t ip6s_overlap_frag_drop; 360 361 u_quad_t ip6s_rcv_if_weak_match; 362 u_quad_t ip6s_rcv_if_no_match; 363 }; 364 365 enum ip6s_sources_rule_index { 366 IP6S_SRCRULE_0, IP6S_SRCRULE_1, IP6S_SRCRULE_2, IP6S_SRCRULE_3, IP6S_SRCRULE_4, 367 IP6S_SRCRULE_5, IP6S_SRCRULE_5_5, IP6S_SRCRULE_6, IP6S_SRCRULE_7, 368 IP6S_SRCRULE_7x, IP6S_SRCRULE_8 369 }; 370 371 #ifdef BSD_KERNEL_PRIVATE 372 /* 373 * IPv6 onion peeling state. 374 * 375 * This is currently allocated for packets destined to the all-nodes 376 * multicast address over Ethernet. IPv6 destination address information 377 * is now stored in the mbuf itself. 378 */ 379 struct ip6aux { 380 u_int32_t ip6a_flags; 381 #define IP6A_HASEEN 0x01 /* HA was present */ 382 383 #ifdef notyet 384 #define IP6A_SWAP 0x02 /* swapped home/care-of on packet */ 385 #define IP6A_BRUID 0x04 /* BR Unique Identifier was present */ 386 #define IP6A_RTALERTSEEN 0x08 /* rtalert present */ 387 388 /* ip6.ip6_src */ 389 struct in6_addr ip6a_careof; /* care-of address of the peer */ 390 struct in6_addr ip6a_home; /* home address of the peer */ 391 u_int16_t ip6a_bruid; /* BR unique identifier */ 392 393 /* rtalert */ 394 u_int16_t ip6a_rtalert; /* rtalert option value */ 395 #endif /* notyet */ 396 397 /* ether source address if all-nodes multicast destination */ 398 u_char ip6a_ehsrc[ETHER_ADDR_LEN]; 399 }; 400 401 /* flags passed to ip6_output as last parameter */ 402 #define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */ 403 #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ 404 #define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */ 405 #define IPV6_FLAG_NOSRCIFSEL 0x80 /* bypas source address selection */ 406 #define IPV6_OUTARGS 0x100 /* has ancillary output info */ 407 408 #ifdef BSD_KERNEL_PRIVATE 409 #define IP6_HDR_ALIGNED_P(_ip6) ((((uintptr_t)(_ip6)) & ((uintptr_t)3)) == 0) 410 411 /* 412 * On platforms which require strict alignment (currently for anything but 413 * i386 or x86_64), this macro checks whether the pointer to the IP header 414 * is 32-bit aligned, and assert otherwise. 415 */ 416 #if defined(__i386__) || defined(__x86_64__) 417 #define IP6_HDR_STRICT_ALIGNMENT_CHECK(_ip6) do { } while (0) 418 #else /* !__i386__ && !__x86_64__ */ 419 #define IP6_HDR_STRICT_ALIGNMENT_CHECK(_ip6) do { \ 420 if (!IP_HDR_ALIGNED_P(_ip6)) { \ 421 panic_plain("\n%s: Unaligned IPv6 header %p\n", \ 422 __func__, _ip6); \ 423 } \ 424 } while (0) 425 #endif /* !__i386__ && !__x86_64__ */ 426 #endif /* BSD_KERNEL_PRIVATE */ 427 428 #include <net/flowadv.h> 429 430 /* 431 * Extra information passed to ip6_output when IPV6_OUTARGS is set. 432 */ 433 struct ip6_out_args { 434 unsigned int ip6oa_boundif; /* bound outgoing interface */ 435 struct flowadv ip6oa_flowadv; /* flow advisory code */ 436 u_int32_t ip6oa_flags; /* IP6OAF flags (see below) */ 437 #define IP6OAF_SELECT_SRCIF 0x00000001 /* src interface selection */ 438 #define IP6OAF_BOUND_IF 0x00000002 /* boundif value is valid */ 439 #define IP6OAF_BOUND_SRCADDR 0x00000004 /* bound to src address */ 440 #define IP6OAF_NO_CELLULAR 0x00000010 /* skip IFT_CELLULAR */ 441 #define IP6OAF_NO_EXPENSIVE 0x00000020 /* skip IFEF_EXPENSIVE */ 442 #define IP6OAF_AWDL_UNRESTRICTED 0x00000040 /* privileged AWDL */ 443 #define IP6OAF_QOSMARKING_ALLOWED 0x00000080 /* policy allows Fastlane DSCP marking */ 444 #define IP6OAF_INTCOPROC_ALLOWED 0x00000100 /* access to internal coproc interfaces */ 445 #define IP6OAF_NO_LOW_POWER 0x00000200 /* skip low power */ 446 #define IP6OAF_NO_CONSTRAINED 0x00000400 /* skip IFXF_CONSTRAINED */ 447 #define IP6OAF_SKIP_PF 0x00000800 /* skip PF */ 448 #define IP6OAF_DONT_FRAG 0x00001000 /* Don't fragment */ 449 #define IP6OAF_REDO_QOSMARKING_POLICY 0x00002000 /* Re-evaluate QOS marking policy */ 450 #define IP6OAF_R_IFDENIED 0x00004000 /* return flag: denied access to interface */ 451 int ip6oa_sotc; /* traffic class for Fastlane DSCP mapping */ 452 int ip6oa_netsvctype; 453 int32_t qos_marking_gencount; 454 }; 455 456 #define IP6OAF_RET_MASK (IP6OAF_R_IFDENIED) 457 458 extern struct ip6stat ip6stat; /* statistics */ 459 extern int ip6_defhlim; /* default hop limit */ 460 extern int ip6_defmcasthlim; /* default multicast hop limit */ 461 extern int ip6_forwarding; /* act as router? */ 462 extern int ip6_gif_hlim; /* Hop limit for gif encap packet */ 463 extern int ip6_use_deprecated; /* allow deprecated addr as source */ 464 extern int ip6_rr_prune; /* router renumbering prefix */ 465 /* walk list every 5 sec. */ 466 extern int ip6_mcast_pmtu; /* enable pMTU discovery for multicast? */ 467 #define ip6_mapped_addr_on (!ip6_v6only) 468 extern int ip6_v6only; 469 470 extern int ip6_neighborgcthresh; /* Threshold # of NDP entries for GC */ 471 extern int ip6_maxifprefixes; /* Max acceptable prefixes via RA per IF */ 472 extern int ip6_maxifdefrouters; /* Max acceptable def routers via RA */ 473 extern int ip6_maxdynroutes; /* Max # of routes created via redirect */ 474 extern int ip6_sendredirects; /* send IP redirects when forwarding? */ 475 extern int ip6_accept_rtadv; /* deprecated */ 476 extern int ip6_log_interval; 477 extern uint64_t ip6_log_time; 478 extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ 479 extern int ip6_dad_count; /* DupAddrDetectionTransmits */ 480 481 /* RFC4193 Unique Local Unicast Prefixes only */ 482 extern int ip6_only_allow_rfc4193_prefix; 483 484 extern int ip6_auto_flowlabel; 485 extern int ip6_auto_linklocal; 486 487 extern int ip6_anonportmin; /* minimum ephemeral port */ 488 extern int ip6_anonportmax; /* maximum ephemeral port */ 489 extern int ip6_lowportmin; /* minimum reserved port */ 490 extern int ip6_lowportmax; /* maximum reserved port */ 491 492 extern int ip6_use_tempaddr; /* whether to use temporary addresses. */ 493 extern int ip6_ula_use_tempaddr; /* whether to use temporary ULA addresses */ 494 495 /* whether to prefer temporary addresses in the source address selection */ 496 extern int ip6_prefer_tempaddr; 497 498 /* whether to use the default scope zone when unspecified */ 499 extern int ip6_use_defzone; 500 501 /* how many times to try allocating cga address after conflict */ 502 extern int ip6_cga_conflict_retries; 503 #define IPV6_CGA_CONFLICT_RETRIES_DEFAULT 3 504 #define IPV6_CGA_CONFLICT_RETRIES_MAX 10 505 506 extern struct pr_usrreqs rip6_usrreqs; 507 extern struct pr_usrreqs icmp6_dgram_usrreqs; 508 509 struct sockopt; 510 struct inpcb; 511 struct ip6_hdr; 512 struct in6_ifaddr; 513 struct ip6protosw; 514 struct domain; 515 516 extern int icmp6_ctloutput(struct socket *, struct sockopt *); 517 extern int icmp6_dgram_ctloutput(struct socket *, struct sockopt *); 518 extern int icmp6_dgram_send(struct socket *, int, struct mbuf *, 519 struct sockaddr *, struct mbuf *, struct proc *); 520 extern int icmp6_dgram_attach(struct socket *, int, struct proc *); 521 522 extern void ip6_init(struct ip6protosw *, struct domain *); 523 extern void ip6_input(struct mbuf *); 524 extern void ip6_setsrcifaddr_info(struct mbuf *, uint32_t, struct in6_ifaddr *); 525 extern void ip6_setdstifaddr_info(struct mbuf *, uint32_t, struct in6_ifaddr *); 526 extern int ip6_getsrcifaddr_info(struct mbuf *, uint32_t *, uint32_t *); 527 extern int ip6_getdstifaddr_info(struct mbuf *, uint32_t *, uint32_t *); 528 extern uint32_t ip6_input_getsrcifscope(struct mbuf *); 529 extern uint32_t ip6_input_getdstifscope(struct mbuf *); 530 extern void ip6_output_setsrcifscope(struct mbuf *, uint32_t, struct in6_ifaddr *); 531 extern void ip6_output_setdstifscope(struct mbuf *, uint32_t, struct in6_ifaddr *); 532 extern uint32_t ip6_output_getsrcifscope(struct mbuf *); 533 extern uint32_t ip6_output_getdstifscope(struct mbuf *); 534 535 extern void ip6_freepcbopts(struct ip6_pktopts *); 536 extern int ip6_unknown_opt(u_int8_t *, struct mbuf *, size_t); 537 extern char *ip6_get_prevhdr(struct mbuf *, int); 538 extern int ip6_nexthdr(struct mbuf *, int, int, int *); 539 extern int ip6_lasthdr(struct mbuf *, int, int, int *); 540 extern boolean_t ip6_pkt_has_ulp(struct mbuf *m); 541 542 extern void ip6_moptions_init(void); 543 extern struct ip6_moptions *ip6_allocmoptions(zalloc_flags_t); 544 extern void im6o_addref(struct ip6_moptions *, int); 545 extern void im6o_remref(struct ip6_moptions *); 546 547 extern struct ip6aux *ip6_addaux(struct mbuf *); 548 extern struct ip6aux *ip6_findaux(struct mbuf *); 549 extern void ip6_delaux(struct mbuf *); 550 551 extern int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *, 552 u_int32_t *); 553 extern struct mbuf **ip6_savecontrol_v4(struct inpcb *, struct mbuf *, 554 struct mbuf **, int *); 555 extern int ip6_savecontrol(struct inpcb *, struct mbuf *, struct mbuf **); 556 extern struct mbuf *ip6_forward(struct mbuf *, struct route_in6 *, int); 557 extern void ip6_notify_pmtu(struct inpcb *, struct sockaddr_in6 *, u_int32_t *); 558 extern void ip6_mloopback(struct ifnet *, struct ifnet *, struct mbuf *, 559 struct sockaddr_in6 *, uint32_t, int32_t); 560 extern int ip6_output(struct mbuf *, struct ip6_pktopts *, struct route_in6 *, 561 int, struct ip6_moptions *, struct ifnet **, struct ip6_out_args *); 562 extern int ip6_output_list(struct mbuf *, int, struct ip6_pktopts *, 563 struct route_in6 *, int, struct ip6_moptions *, struct ifnet **, 564 struct ip6_out_args *); 565 extern int ip6_ctloutput(struct socket *, struct sockopt *); 566 extern int ip6_raw_ctloutput(struct socket *, struct sockopt *); 567 extern void ip6_initpktopts(struct ip6_pktopts *); 568 extern int ip6_setpktoptions(struct mbuf *, struct ip6_pktopts *, int, int); 569 extern void ip6_clearpktopts(struct ip6_pktopts *, int); 570 extern struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, zalloc_flags_t); 571 extern int ip6_optlen(struct inpcb *); 572 extern void ip6_drain(void); 573 extern int ip6_do_fragmentation(struct mbuf **, uint32_t, struct ifnet *, uint32_t, 574 struct ip6_hdr *, uint8_t *, uint32_t, int, uint32_t); 575 576 extern int route6_input(struct mbuf **, int *, int); 577 578 extern void frag6_init(void); 579 extern int frag6_input(struct mbuf **, int *, int); 580 extern void frag6_drain(void); 581 582 extern int rip6_input(struct mbuf **, int *, int); 583 extern void rip6_ctlinput(int, struct sockaddr *, void *, struct ifnet *); 584 extern int rip6_ctloutput(struct socket *so, struct sockopt *sopt); 585 extern int rip6_output(struct mbuf *, struct socket *, struct sockaddr_in6 *, 586 struct mbuf *, int); 587 588 extern int dest6_input(struct mbuf **, int *, int); 589 /* 590 * IPv6 source address selection hints 591 */ 592 #define IPV6_SRCSEL_HINT_PREFER_TMPADDR 0x00000001 593 594 extern struct ifaddr * in6_selectsrc_core_ifa(struct sockaddr_in6 *, struct ifnet *, int); 595 extern struct in6_addr * in6_selectsrc_core(struct sockaddr_in6 *, 596 uint32_t, struct ifnet *, int, 597 struct in6_addr *, struct ifnet **, int *, struct ifaddr **, struct route_in6 *); 598 extern struct in6_addr *in6_selectsrc(struct sockaddr_in6 *, 599 struct ip6_pktopts *, struct inpcb *, struct route_in6 *, 600 struct ifnet **, struct in6_addr *, unsigned int, int *); 601 extern struct in6_addrpolicy *in6_addrsel_lookup_policy(struct sockaddr_in6 *); 602 extern int in6_selectroute(struct sockaddr_in6 *, struct sockaddr_in6 *, 603 struct ip6_pktopts *, struct ip6_moptions *, struct in6_ifaddr **, 604 struct route_in6 *, struct ifnet **, struct rtentry **, int, 605 struct ip6_out_args *); 606 extern int ip6_setpktopts(struct mbuf *control, struct ip6_pktopts *opt, 607 struct ip6_pktopts *stickyopt, int uproto); 608 extern u_int32_t ip6_randomid(void); 609 extern u_int32_t ip6_randomflowlabel(void); 610 #endif /* BSD_KERNEL_PRIVATE */ 611 #endif /* !_NETINET6_IP6_VAR_H_ */ 612