1/* 2 * Copyright (c) 2000-2014 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 <net/ethernet.h> 99 100/* 101 * IP6 reassembly queue structure. Each fragment 102 * being reassembled is attached to one of these structures. 103 */ 104struct ip6q { 105 struct ip6asfrag *ip6q_down; 106 struct ip6asfrag *ip6q_up; 107 u_int32_t ip6q_ident; 108 u_int8_t ip6q_nxt; 109 u_int8_t ip6q_ecn; 110 u_int8_t ip6q_ttl; 111 struct in6_addr ip6q_src, ip6q_dst; 112 struct ip6q *ip6q_next; 113 struct ip6q *ip6q_prev; 114 int ip6q_unfrglen; /* len of unfragmentable part */ 115#ifdef notyet 116 u_char *ip6q_nxtp; 117#endif 118 int ip6q_nfrag; /* # of fragments */ 119 uint32_t ip6q_csum_flags; /* checksum flags */ 120 uint32_t ip6q_csum; /* partial checksum value */ 121}; 122 123struct ip6asfrag { 124 struct ip6asfrag *ip6af_down; 125 struct ip6asfrag *ip6af_up; 126 struct mbuf *ip6af_m; 127 int ip6af_offset; /* offset in ip6af_m to next header */ 128 int ip6af_frglen; /* fragmentable part length */ 129 int ip6af_off; /* fragment offset */ 130 u_int16_t ip6af_mff; /* more fragment bit in frag off */ 131}; 132 133#define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m)) 134 135struct ip6_moptions { 136 decl_lck_mtx_data(, im6o_lock); 137 uint32_t im6o_refcnt; /* ref count */ 138 uint32_t im6o_debug; /* see ifa_debug flags */ 139 struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */ 140 u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */ 141 u_char im6o_multicast_loop; /* 1 >= hear sends if a member */ 142 u_short im6o_num_memberships; /* no. memberships this socket */ 143 u_short im6o_max_memberships; /* max memberships this socket */ 144 struct in6_multi **im6o_membership; /* group memberships */ 145 struct in6_mfilter *im6o_mfilters; /* source filters */ 146 void (*im6o_trace) /* callback fn for tracing refs */ 147 (struct ip6_moptions *, int); 148}; 149 150#define IM6O_LOCK_ASSERT_HELD(_im6o) \ 151 lck_mtx_assert(&(_im6o)->im6o_lock, LCK_MTX_ASSERT_OWNED) 152 153#define IM6O_LOCK_ASSERT_NOTHELD(_im6o) \ 154 lck_mtx_assert(&(_im6o)->im6o_lock, LCK_MTX_ASSERT_NOTOWNED) 155 156#define IM6O_LOCK(_im6o) \ 157 lck_mtx_lock(&(_im6o)->im6o_lock) 158 159#define IM6O_LOCK_SPIN(_im6o) \ 160 lck_mtx_lock_spin(&(_im6o)->im6o_lock) 161 162#define IM6O_CONVERT_LOCK(_im6o) do { \ 163 IM6O_LOCK_ASSERT_HELD(_im6o); \ 164 lck_mtx_convert_spin(&(_im6o)->im6o_lock); \ 165} while (0) 166 167#define IM6O_UNLOCK(_im6o) \ 168 lck_mtx_unlock(&(_im6o)->im6o_lock) 169 170#define IM6O_ADDREF(_im6o) \ 171 im6o_addref(_im6o, 0) 172 173#define IM6O_ADDREF_LOCKED(_im6o) \ 174 im6o_addref(_im6o, 1) 175 176#define IM6O_REMREF(_im6o) \ 177 im6o_remref(_im6o) 178 179struct ip6_exthdrs { 180 struct mbuf *ip6e_ip6; 181 struct mbuf *ip6e_hbh; 182 struct mbuf *ip6e_dest1; 183 struct mbuf *ip6e_rthdr; 184 struct mbuf *ip6e_dest2; 185}; 186 187/* 188 * Control options for outgoing packets 189 */ 190 191/* Routing header related info */ 192struct ip6po_rhinfo { 193 struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */ 194 struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */ 195}; 196#define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr 197#define ip6po_route ip6po_rhinfo.ip6po_rhi_route 198 199/* Nexthop related info */ 200struct ip6po_nhinfo { 201 struct sockaddr *ip6po_nhi_nexthop; 202 struct route_in6 ip6po_nhi_route; /* Route to the nexthop */ 203}; 204#define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop 205#define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_route 206 207struct ip6_pktopts { 208 struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */ 209 int ip6po_hlim; /* Hoplimit for outgoing packets */ 210 211 /* Outgoing IF/address information */ 212 struct in6_pktinfo *ip6po_pktinfo; 213 214 /* Next-hop address information */ 215 struct ip6po_nhinfo ip6po_nhinfo; 216 217 struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */ 218 219 /* Destination options header (before a routing header) */ 220 struct ip6_dest *ip6po_dest1; 221 222 /* Routing header related info. */ 223 struct ip6po_rhinfo ip6po_rhinfo; 224 225 /* Destination options header (after a routing header) */ 226 struct ip6_dest *ip6po_dest2; 227 228 int ip6po_tclass; /* traffic class */ 229 230 int ip6po_minmtu; /* fragment vs PMTU discovery policy */ 231#define IP6PO_MINMTU_MCASTONLY -1 /* default; send at min MTU for multicast */ 232#define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */ 233#define IP6PO_MINMTU_ALL 1 /* always send at min MTU */ 234 235 /* whether temporary addresses are preferred as source address */ 236 int ip6po_prefer_tempaddr; 237 238#define IP6PO_TEMPADDR_SYSTEM -1 /* follow the system default */ 239#define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */ 240#define IP6PO_TEMPADDR_PREFER 1 /* prefer temporary address */ 241 242 int ip6po_flags; 243#if 0 /* parameters in this block is obsolete. do not reuse the values. */ 244#define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation. */ 245#define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */ 246#endif 247#define IP6PO_DONTFRAG 0x04 /* no fragmentation (IPV6_DONTFRAG) */ 248#define IP6PO_USECOA 0x08 /* use care of address */ 249}; 250 251/* 252 * Control options for incoming packets 253 */ 254#endif /* BSD_KERNEL_PRIVATE */ 255 256struct ip6stat { 257 u_quad_t ip6s_total; /* total packets received */ 258 u_quad_t ip6s_tooshort; /* packet too short */ 259 u_quad_t ip6s_toosmall; /* not enough data */ 260 u_quad_t ip6s_fragments; /* fragments received */ 261 u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */ 262 u_quad_t ip6s_fragtimeout; /* fragments timed out */ 263 u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */ 264 u_quad_t ip6s_forward; /* packets forwarded */ 265 u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */ 266 u_quad_t ip6s_redirectsent; /* packets forwarded on same net */ 267 u_quad_t ip6s_delivered; /* datagrams delivered to upper level */ 268 u_quad_t ip6s_localout; /* total ip packets generated here */ 269 u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */ 270 u_quad_t ip6s_reassembled; /* total packets reassembled ok */ 271 u_quad_t ip6s_fragmented; /* datagrams successfully fragmented */ 272 u_quad_t ip6s_ofragments; /* output fragments created */ 273 u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */ 274 u_quad_t ip6s_badoptions; /* error in option processing */ 275 u_quad_t ip6s_noroute; /* packets discarded due to no route */ 276 u_quad_t ip6s_badvers; /* ip6 version != 6 */ 277 u_quad_t ip6s_rawout; /* total raw ip packets generated */ 278 u_quad_t ip6s_badscope; /* scope error */ 279 u_quad_t ip6s_notmember; /* don't join this multicast group */ 280 u_quad_t ip6s_nxthist[256]; /* next header history */ 281 u_quad_t ip6s_m1; /* one mbuf */ 282 u_quad_t ip6s_m2m[32]; /* two or more mbuf */ 283 u_quad_t ip6s_mext1; /* one ext mbuf */ 284 u_quad_t ip6s_mext2m; /* two or more ext mbuf */ 285 u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */ 286 u_quad_t ip6s_nogif; /* no match gif found */ 287 u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */ 288 289 /* 290 * statistics for improvement of the source address selection 291 * algorithm: 292 * XXX: hardcoded 16 = # of ip6 multicast scope types + 1 293 */ 294 /* number of times that address selection fails */ 295 u_quad_t ip6s_sources_none; 296 /* number of times that an address on the outgoing I/F is chosen */ 297 u_quad_t ip6s_sources_sameif[16]; 298 /* number of times that an address on a non-outgoing I/F is chosen */ 299 u_quad_t ip6s_sources_otherif[16]; 300 /* 301 * number of times that an address that has the same scope 302 * from the destination is chosen. 303 */ 304 u_quad_t ip6s_sources_samescope[16]; 305 /* 306 * number of times that an address that has a different scope 307 * from the destination is chosen. 308 */ 309 u_quad_t ip6s_sources_otherscope[16]; 310 /* number of times that a deprecated address is chosen */ 311 u_quad_t ip6s_sources_deprecated[16]; 312 313 u_quad_t ip6s_forward_cachehit; 314 u_quad_t ip6s_forward_cachemiss; 315 316 /* number of times that each rule of source selection is applied. */ 317 u_quad_t ip6s_sources_rule[16]; 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 330enum ip6s_sources_rule_index { 331 IP6S_SRCRULE_0, IP6S_SRCRULE_1, IP6S_SRCRULE_2, IP6S_SRCRULE_3, IP6S_SRCRULE_4, 332 IP6S_SRCRULE_5, IP6S_SRCRULE_5_5, IP6S_SRCRULE_6, IP6S_SRCRULE_7, 333 IP6S_SRCRULE_7x, IP6S_SRCRULE_8 334}; 335 336#ifdef BSD_KERNEL_PRIVATE 337/* 338 * IPv6 onion peeling state. 339 * 340 * This is currently allocated for packets destined to the all-nodes 341 * multicast address over Ethernet. IPv6 destination address information 342 * is now stored in the mbuf itself. 343 */ 344struct ip6aux { 345 u_int32_t ip6a_flags; 346#define IP6A_HASEEN 0x01 /* HA was present */ 347 348#ifdef notyet 349#define IP6A_SWAP 0x02 /* swapped home/care-of on packet */ 350#define IP6A_BRUID 0x04 /* BR Unique Identifier was present */ 351#define IP6A_RTALERTSEEN 0x08 /* rtalert present */ 352 353 /* ip6.ip6_src */ 354 struct in6_addr ip6a_careof; /* care-of address of the peer */ 355 struct in6_addr ip6a_home; /* home address of the peer */ 356 u_int16_t ip6a_bruid; /* BR unique identifier */ 357 358 /* rtalert */ 359 u_int16_t ip6a_rtalert; /* rtalert option value */ 360#endif /* notyet */ 361 362 /* ether source address if all-nodes multicast destination */ 363 u_char ip6a_ehsrc[ETHER_ADDR_LEN]; 364}; 365 366/* flags passed to ip6_output as last parameter */ 367#define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */ 368#define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */ 369#define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */ 370#define IPV6_FLAG_NOSRCIFSEL 0x80 /* bypas source address selection */ 371#define IPV6_OUTARGS 0x100 /* has ancillary output info */ 372 373#ifdef BSD_KERNEL_PRIVATE 374#define IP6_HDR_ALIGNED_P(_ip6) ((((uintptr_t)(_ip6)) & ((uintptr_t)3)) == 0) 375 376/* 377 * On platforms which require strict alignment (currently for anything but 378 * i386 or x86_64), this macro checks whether the pointer to the IP header 379 * is 32-bit aligned, and assert otherwise. 380 */ 381#if defined(__i386__) || defined(__x86_64__) 382#define IP6_HDR_STRICT_ALIGNMENT_CHECK(_ip6) do { } while (0) 383#else /* !__i386__ && !__x86_64__ */ 384#define IP6_HDR_STRICT_ALIGNMENT_CHECK(_ip6) do { \ 385 if (!IP_HDR_ALIGNED_P(_ip6)) { \ 386 panic_plain("\n%s: Unaligned IPv6 header %p\n", \ 387 __func__, _ip6); \ 388 } \ 389} while (0) 390#endif /* !__i386__ && !__x86_64__ */ 391#endif /* BSD_KERNEL_PRIVATE */ 392 393#include <net/flowadv.h> 394 395/* 396 * Extra information passed to ip6_output when IPV6_OUTARGS is set. 397 */ 398struct ip6_out_args { 399 unsigned int ip6oa_boundif; /* bound outgoing interface */ 400 struct flowadv ip6oa_flowadv; /* flow advisory code */ 401 u_int32_t ip6oa_flags; /* IP6OAF flags (see below) */ 402#define IP6OAF_SELECT_SRCIF 0x00000001 /* src interface selection */ 403#define IP6OAF_BOUND_IF 0x00000002 /* boundif value is valid */ 404#define IP6OAF_BOUND_SRCADDR 0x00000004 /* bound to src address */ 405#define IP6OAF_NO_CELLULAR 0x00000010 /* skip IFT_CELLULAR */ 406#define IP6OAF_NO_EXPENSIVE 0x00000020 /* skip IFEF_EXPENSIVE */ 407#define IP6OAF_AWDL_UNRESTRICTED 0x00000040 /* privileged AWDL */ 408 u_int32_t ip6oa_retflags; /* IP6OARF return flags (see below) */ 409#define IP6OARF_IFDENIED 0x00000001 /* denied access to interface */ 410}; 411 412extern struct ip6stat ip6stat; /* statistics */ 413extern int ip6_defhlim; /* default hop limit */ 414extern int ip6_defmcasthlim; /* default multicast hop limit */ 415extern int ip6_forwarding; /* act as router? */ 416extern int ip6_gif_hlim; /* Hop limit for gif encap packet */ 417extern int ip6_use_deprecated; /* allow deprecated addr as source */ 418extern int ip6_rr_prune; /* router renumbering prefix */ 419 /* walk list every 5 sec. */ 420extern int ip6_mcast_pmtu; /* enable pMTU discovery for multicast? */ 421#define ip6_mapped_addr_on (!ip6_v6only) 422extern int ip6_v6only; 423 424extern int ip6_neighborgcthresh; /* Threshold # of NDP entries for GC */ 425extern int ip6_maxifprefixes; /* Max acceptable prefixes via RA per IF */ 426extern int ip6_maxifdefrouters; /* Max acceptable def routers via RA */ 427extern int ip6_maxdynroutes; /* Max # of routes created via redirect */ 428extern int ip6_sendredirects; /* send IP redirects when forwarding? */ 429extern int ip6_accept_rtadv; /* deprecated */ 430extern int ip6_log_interval; 431extern uint64_t ip6_log_time; 432extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ 433extern int ip6_dad_count; /* DupAddrDetectionTransmits */ 434 435/* RFC4193 Unique Local Unicast Prefixes only */ 436extern int ip6_only_allow_rfc4193_prefix; 437 438extern int ip6_auto_flowlabel; 439extern int ip6_auto_linklocal; 440 441extern int ip6_anonportmin; /* minimum ephemeral port */ 442extern int ip6_anonportmax; /* maximum ephemeral port */ 443extern int ip6_lowportmin; /* minimum reserved port */ 444extern int ip6_lowportmax; /* maximum reserved port */ 445 446extern int ip6_use_tempaddr; /* whether to use temporary addresses. */ 447 448/* whether to prefer temporary addresses in the source address selection */ 449extern int ip6_prefer_tempaddr; 450 451/* whether to use the default scope zone when unspecified */ 452extern int ip6_use_defzone; 453 454extern struct pr_usrreqs rip6_usrreqs; 455extern struct pr_usrreqs icmp6_dgram_usrreqs; 456 457extern int ip6_doscopedroute; 458 459struct sockopt; 460struct inpcb; 461struct in6_ifaddr; 462struct ip6protosw; 463struct domain; 464 465extern int icmp6_ctloutput(struct socket *, struct sockopt *); 466extern int icmp6_dgram_ctloutput(struct socket *, struct sockopt *); 467extern int icmp6_dgram_send(struct socket *, int, struct mbuf *, 468 struct sockaddr *, struct mbuf *, struct proc *); 469extern int icmp6_dgram_attach(struct socket *, int, struct proc *); 470 471extern void ip6_init(struct ip6protosw *, struct domain *); 472extern void ip6_input(struct mbuf *); 473extern void ip6_setsrcifaddr_info(struct mbuf *, uint32_t, struct in6_ifaddr *); 474extern void ip6_setdstifaddr_info(struct mbuf *, uint32_t, struct in6_ifaddr *); 475extern int ip6_getsrcifaddr_info(struct mbuf *, uint32_t *, uint32_t *); 476extern int ip6_getdstifaddr_info(struct mbuf *, uint32_t *, uint32_t *); 477extern void ip6_freepcbopts(struct ip6_pktopts *); 478extern int ip6_unknown_opt(u_int8_t *, struct mbuf *, int); 479extern char *ip6_get_prevhdr(struct mbuf *, int); 480extern int ip6_nexthdr(struct mbuf *, int, int, int *); 481extern int ip6_lasthdr(struct mbuf *, int, int, int *); 482 483extern void ip6_moptions_init(void); 484extern struct ip6_moptions *ip6_allocmoptions(int); 485extern void im6o_addref(struct ip6_moptions *, int); 486extern void im6o_remref(struct ip6_moptions *); 487 488extern struct ip6aux *ip6_addaux(struct mbuf *); 489extern struct ip6aux *ip6_findaux(struct mbuf *); 490extern void ip6_delaux(struct mbuf *); 491 492extern int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *, 493 u_int32_t *); 494extern struct mbuf **ip6_savecontrol_v4(struct inpcb *, struct mbuf *, 495 struct mbuf **, int *); 496extern int ip6_savecontrol(struct inpcb *, struct mbuf *, struct mbuf **); 497extern struct mbuf *ip6_forward(struct mbuf *, struct route_in6 *, int); 498extern void ip6_notify_pmtu(struct inpcb *, struct sockaddr_in6 *, u_int32_t *); 499extern void ip6_mloopback(struct ifnet *, struct ifnet *, struct mbuf *, 500 struct sockaddr_in6 *, uint32_t, int32_t); 501extern int ip6_output(struct mbuf *, struct ip6_pktopts *, struct route_in6 *, 502 int, struct ip6_moptions *, struct ifnet **, struct ip6_out_args *); 503extern int ip6_output_list(struct mbuf *, int, struct ip6_pktopts *, 504 struct route_in6 *, int, struct ip6_moptions *, struct ifnet **, 505 struct ip6_out_args *); 506extern int ip6_ctloutput(struct socket *, struct sockopt *); 507extern int ip6_raw_ctloutput(struct socket *, struct sockopt *); 508extern void ip6_initpktopts(struct ip6_pktopts *); 509extern int ip6_setpktoptions(struct mbuf *, struct ip6_pktopts *, int, int); 510extern void ip6_clearpktopts(struct ip6_pktopts *, int); 511extern struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, int); 512extern int ip6_optlen(struct inpcb *); 513extern void ip6_drain(void); 514 515extern int route6_input(struct mbuf **, int *, int); 516 517extern void frag6_init(void); 518extern int frag6_input(struct mbuf **, int *, int); 519extern void frag6_drain(void); 520 521extern int rip6_input(struct mbuf **, int *, int); 522extern void rip6_ctlinput(int, struct sockaddr *, void *); 523extern int rip6_ctloutput(struct socket *so, struct sockopt *sopt); 524extern int rip6_output(struct mbuf *, struct socket *, struct sockaddr_in6 *, 525 struct mbuf *, int); 526 527extern int dest6_input(struct mbuf **, int *, int); 528extern struct in6_addr *in6_selectsrc(struct sockaddr_in6 *, 529 struct ip6_pktopts *, struct inpcb *, struct route_in6 *, 530 struct ifnet **, struct in6_addr *, unsigned int, int *); 531extern struct in6_addrpolicy *in6_addrsel_lookup_policy(struct sockaddr_in6 *); 532extern int in6_selectroute(struct sockaddr_in6 *, struct sockaddr_in6 *, 533 struct ip6_pktopts *, struct ip6_moptions *, struct in6_ifaddr **, 534 struct route_in6 *, struct ifnet **, struct rtentry **, int, 535 struct ip6_out_args *); 536extern int ip6_setpktopts(struct mbuf *control, struct ip6_pktopts *opt, 537 struct ip6_pktopts *stickyopt, int uproto); 538extern u_int32_t ip6_randomid(void); 539extern u_int32_t ip6_randomflowlabel(void); 540#endif /* BSD_KERNEL_PRIVATE */ 541#endif /* !_NETINET6_IP6_VAR_H_ */ 542