1139823Simp/*- 21541Srgrimes * Copyright (c) 1985, 1986, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * Redistribution and use in source and binary forms, with or without 61541Srgrimes * modification, are permitted provided that the following conditions 71541Srgrimes * are met: 81541Srgrimes * 1. Redistributions of source code must retain the above copyright 91541Srgrimes * notice, this list of conditions and the following disclaimer. 101541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111541Srgrimes * notice, this list of conditions and the following disclaimer in the 121541Srgrimes * documentation and/or other materials provided with the distribution. 131541Srgrimes * 4. Neither the name of the University nor the names of its contributors 141541Srgrimes * may be used to endorse or promote products derived from this software 151541Srgrimes * without specific prior written permission. 161541Srgrimes * 171541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271541Srgrimes * SUCH DAMAGE. 281541Srgrimes * 2910939Swollman * @(#)in_var.h 8.2 (Berkeley) 1/9/95 3050477Speter * $FreeBSD$ 311541Srgrimes */ 321541Srgrimes 332169Spaul#ifndef _NETINET_IN_VAR_H_ 342169Spaul#define _NETINET_IN_VAR_H_ 352169Spaul 367280Swollman#include <sys/queue.h> 3784102Sjlemon#include <sys/fnv_hash.h> 38189592Sbms#include <sys/tree.h> 397280Swollman 40189592Sbmsstruct igmp_ifinfo; 41189592Sbmsstruct in_multi; 42189592Sbmsstruct lltable; 43189592Sbms 441541Srgrimes/* 45189592Sbms * IPv4 per-interface state. 46189592Sbms */ 47189592Sbmsstruct in_ifinfo { 48189592Sbms struct lltable *ii_llt; /* ARP state */ 49189592Sbms struct igmp_ifinfo *ii_igmp; /* IGMP state */ 50189592Sbms struct in_multi *ii_allhosts; /* 224.0.0.1 membership */ 51189592Sbms}; 52189592Sbms 53189592Sbms/* 541541Srgrimes * Interface address, Internet version. One of these structures 5521666Swollman * is allocated for each Internet address on an interface. 561541Srgrimes * The ifaddr structure contains the protocol-independent part 571541Srgrimes * of the structure and is assumed to be first. 581541Srgrimes */ 591541Srgrimesstruct in_ifaddr { 601541Srgrimes struct ifaddr ia_ifa; /* protocol-independent info */ 611541Srgrimes#define ia_ifp ia_ifa.ifa_ifp 621541Srgrimes#define ia_flags ia_ifa.ifa_flags 63226572Sglebius /* ia_subnet{,mask} in host order */ 64226572Sglebius u_long ia_subnet; /* subnet address */ 65226572Sglebius u_long ia_subnetmask; /* mask of subnet */ 6684102Sjlemon LIST_ENTRY(in_ifaddr) ia_hash; /* entry in bucket of inet addresses */ 6784102Sjlemon TAILQ_ENTRY(in_ifaddr) ia_link; /* list of internet addresses */ 681541Srgrimes struct sockaddr_in ia_addr; /* reserve space for interface name */ 691541Srgrimes struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */ 701541Srgrimes#define ia_broadaddr ia_dstaddr 711541Srgrimes struct sockaddr_in ia_sockmask; /* reserve space for general netmask */ 721541Srgrimes}; 731541Srgrimes 741541Srgrimesstruct in_aliasreq { 751541Srgrimes char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 761541Srgrimes struct sockaddr_in ifra_addr; 771541Srgrimes struct sockaddr_in ifra_broadaddr; 781541Srgrimes#define ifra_dstaddr ifra_broadaddr 791541Srgrimes struct sockaddr_in ifra_mask; 801541Srgrimes}; 811541Srgrimes/* 821541Srgrimes * Given a pointer to an in_ifaddr (ifaddr), 831541Srgrimes * return a pointer to the addr as a sockaddr_in. 841541Srgrimes */ 853865Sswallace#define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr)) 863865Sswallace#define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr)) 871541Srgrimes 881541Srgrimes#define IN_LNAOF(in, ifa) \ 891541Srgrimes ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask)) 901541Srgrimes 918876Srgrimes 9255205Speter#ifdef _KERNEL 937090Sbdeextern u_char inetctlerrmap[]; 941541Srgrimes 95191120Skmacy#define LLTABLE(ifp) \ 96191120Skmacy ((struct in_ifinfo *)(ifp)->if_afdata[AF_INET])->ii_llt 97133874Srwatson/* 9884102Sjlemon * Hash table for IP addresses. 9984102Sjlemon */ 100186048SbzTAILQ_HEAD(in_ifaddrhead, in_ifaddr); 101186048SbzLIST_HEAD(in_ifaddrhashhead, in_ifaddr); 10284102Sjlemon 103195699SrwatsonVNET_DECLARE(struct in_ifaddrhashhead *, in_ifaddrhashtbl); 104195699SrwatsonVNET_DECLARE(struct in_ifaddrhead, in_ifaddrhead); 105195699SrwatsonVNET_DECLARE(u_long, in_ifaddrhmask); /* mask for hash table */ 106195699Srwatson 107195727Srwatson#define V_in_ifaddrhashtbl VNET(in_ifaddrhashtbl) 108195727Srwatson#define V_in_ifaddrhead VNET(in_ifaddrhead) 109195727Srwatson#define V_in_ifaddrhmask VNET(in_ifaddrhmask) 110195699Srwatson 11184102Sjlemon#define INADDR_NHASH_LOG2 9 11284102Sjlemon#define INADDR_NHASH (1 << INADDR_NHASH_LOG2) 11384102Sjlemon#define INADDR_HASHVAL(x) fnv_32_buf((&(x)), sizeof(x), FNV1_32_INIT) 11484102Sjlemon#define INADDR_HASH(x) \ 115181803Sbz (&V_in_ifaddrhashtbl[INADDR_HASHVAL(x) & V_in_ifaddrhmask]) 11684102Sjlemon 117194951Srwatsonextern struct rwlock in_ifaddr_lock; 118194951Srwatson 119194951Srwatson#define IN_IFADDR_LOCK_ASSERT() rw_assert(&in_ifaddr_lock, RA_LOCKED) 120194951Srwatson#define IN_IFADDR_RLOCK() rw_rlock(&in_ifaddr_lock) 121194951Srwatson#define IN_IFADDR_RLOCK_ASSERT() rw_assert(&in_ifaddr_lock, RA_RLOCKED) 122194951Srwatson#define IN_IFADDR_RUNLOCK() rw_runlock(&in_ifaddr_lock) 123194951Srwatson#define IN_IFADDR_WLOCK() rw_wlock(&in_ifaddr_lock) 124194951Srwatson#define IN_IFADDR_WLOCK_ASSERT() rw_assert(&in_ifaddr_lock, RA_WLOCKED) 125194951Srwatson#define IN_IFADDR_WUNLOCK() rw_wunlock(&in_ifaddr_lock) 126194951Srwatson 127162615Sbms/* 128162625Sbms * Macro for finding the internet address structure (in_ifaddr) 129162615Sbms * corresponding to one of our IP addresses (in_addr). 130162615Sbms */ 131162615Sbms#define INADDR_TO_IFADDR(addr, ia) \ 132162615Sbms /* struct in_addr addr; */ \ 133162615Sbms /* struct in_ifaddr *ia; */ \ 134162615Sbmsdo { \ 135162615Sbms\ 136162615Sbms LIST_FOREACH(ia, INADDR_HASH((addr).s_addr), ia_hash) \ 137162615Sbms if (IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \ 138162615Sbms break; \ 139162615Sbms} while (0) 14084102Sjlemon 1411541Srgrimes/* 1421541Srgrimes * Macro for finding the interface (ifnet structure) corresponding to one 1431541Srgrimes * of our IP addresses. 1441541Srgrimes */ 1451541Srgrimes#define INADDR_TO_IFP(addr, ifp) \ 1461541Srgrimes /* struct in_addr addr; */ \ 1471541Srgrimes /* struct ifnet *ifp; */ \ 1481541Srgrimes{ \ 14979821Sru struct in_ifaddr *ia; \ 1501541Srgrimes\ 151162615Sbms INADDR_TO_IFADDR(addr, ia); \ 1521541Srgrimes (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \ 1531541Srgrimes} 1541541Srgrimes 1551541Srgrimes/* 1561541Srgrimes * Macro for finding the internet address structure (in_ifaddr) corresponding 1571541Srgrimes * to a given interface (ifnet structure). 1581541Srgrimes */ 159194760Srwatson#define IFP_TO_IA(ifp, ia) \ 160194760Srwatson /* struct ifnet *ifp; */ \ 161194760Srwatson /* struct in_ifaddr *ia; */ \ 162238713Sglebiusdo { \ 163238713Sglebius IN_IFADDR_RLOCK(); \ 164194760Srwatson for ((ia) = TAILQ_FIRST(&V_in_ifaddrhead); \ 165194760Srwatson (ia) != NULL && (ia)->ia_ifp != (ifp); \ 166194760Srwatson (ia) = TAILQ_NEXT((ia), ia_link)) \ 167194760Srwatson continue; \ 168194760Srwatson if ((ia) != NULL) \ 169194760Srwatson ifa_ref(&(ia)->ia_ifa); \ 170238713Sglebius IN_IFADDR_RUNLOCK(); \ 171238713Sglebius} while (0) 1721541Srgrimes#endif 1731541Srgrimes 1741541Srgrimes/* 175185088Szec * IP datagram reassembly. 176185088Szec */ 177185088Szec#define IPREASS_NHASH_LOG2 6 178185088Szec#define IPREASS_NHASH (1 << IPREASS_NHASH_LOG2) 179185088Szec#define IPREASS_HMASK (IPREASS_NHASH - 1) 180185088Szec#define IPREASS_HASH(x,y) \ 181185088Szec (((((x) & 0xF) | ((((x) >> 8) & 0xF) << 4)) ^ (y)) & IPREASS_HMASK) 182185088Szec 183185088Szec/* 184189592Sbms * Legacy IPv4 IGMP per-link structure. 1852531Swollman */ 1862531Swollmanstruct router_info { 18714622Sfenner struct ifnet *rti_ifp; 18814622Sfenner int rti_type; /* type of router which is querier on this interface */ 18914622Sfenner int rti_time; /* # of slow timeouts since last old query */ 190119180Srwatson SLIST_ENTRY(router_info) rti_list; 1912531Swollman}; 1922531Swollman 1932531Swollman/* 194189592Sbms * Per-interface IGMP router version information. 1951541Srgrimes */ 196189592Sbmsstruct igmp_ifinfo { 197189592Sbms LIST_ENTRY(igmp_ifinfo) igi_link; 198189592Sbms struct ifnet *igi_ifp; /* interface this instance belongs to */ 199189592Sbms uint32_t igi_version; /* IGMPv3 Host Compatibility Mode */ 200189592Sbms uint32_t igi_v1_timer; /* IGMPv1 Querier Present timer (s) */ 201189592Sbms uint32_t igi_v2_timer; /* IGMPv2 Querier Present timer (s) */ 202189592Sbms uint32_t igi_v3_timer; /* IGMPv3 General Query (interface) timer (s)*/ 203189592Sbms uint32_t igi_flags; /* IGMP per-interface flags */ 204189592Sbms uint32_t igi_rv; /* IGMPv3 Robustness Variable */ 205189592Sbms uint32_t igi_qi; /* IGMPv3 Query Interval (s) */ 206189592Sbms uint32_t igi_qri; /* IGMPv3 Query Response Interval (s) */ 207189592Sbms uint32_t igi_uri; /* IGMPv3 Unsolicited Report Interval (s) */ 208189592Sbms SLIST_HEAD(,in_multi) igi_relinmhead; /* released groups */ 209189592Sbms struct ifqueue igi_gq; /* queue of general query responses */ 210189592Sbms}; 211189592Sbms 212189592Sbms#define IGIF_SILENT 0x00000001 /* Do not use IGMP on this ifp */ 213189592Sbms#define IGIF_LOOPBACK 0x00000002 /* Send IGMP reports to loopback */ 214189592Sbms 215189592Sbms/* 216189592Sbms * IPv4 multicast IGMP-layer source entry. 217189592Sbms */ 218189592Sbmsstruct ip_msource { 219189592Sbms RB_ENTRY(ip_msource) ims_link; /* RB tree links */ 220189592Sbms in_addr_t ims_haddr; /* host byte order */ 221189592Sbms struct ims_st { 222189592Sbms uint16_t ex; /* # of exclusive members */ 223189592Sbms uint16_t in; /* # of inclusive members */ 224189592Sbms } ims_st[2]; /* state at t0, t1 */ 225189592Sbms uint8_t ims_stp; /* pending query */ 226189592Sbms}; 227189592Sbms 228189592Sbms/* 229189592Sbms * IPv4 multicast PCB-layer source entry. 230189592Sbms */ 231189592Sbmsstruct in_msource { 232189592Sbms RB_ENTRY(ip_msource) ims_link; /* RB tree links */ 233189592Sbms in_addr_t ims_haddr; /* host byte order */ 234189592Sbms uint8_t imsl_st[2]; /* state before/at commit */ 235189592Sbms}; 236189592Sbms 237189592SbmsRB_HEAD(ip_msource_tree, ip_msource); /* define struct ip_msource_tree */ 238189592Sbms 239189592Sbmsstatic __inline int 240189592Sbmsip_msource_cmp(const struct ip_msource *a, const struct ip_msource *b) 241189592Sbms{ 242189592Sbms 243189592Sbms if (a->ims_haddr < b->ims_haddr) 244189592Sbms return (-1); 245189592Sbms if (a->ims_haddr == b->ims_haddr) 246189592Sbms return (0); 247189592Sbms return (1); 248189592Sbms} 249189592SbmsRB_PROTOTYPE(ip_msource_tree, ip_msource, ims_link, ip_msource_cmp); 250189592Sbms 251189592Sbms/* 252189592Sbms * IPv4 multicast PCB-layer group filter descriptor. 253189592Sbms */ 254189592Sbmsstruct in_mfilter { 255189592Sbms struct ip_msource_tree imf_sources; /* source list for (S,G) */ 256189592Sbms u_long imf_nsrc; /* # of source entries */ 257189592Sbms uint8_t imf_st[2]; /* state before/at commit */ 258189592Sbms}; 259189592Sbms 260189592Sbms/* 261189592Sbms * IPv4 group descriptor. 262189592Sbms * 263189592Sbms * For every entry on an ifnet's if_multiaddrs list which represents 264189592Sbms * an IP multicast group, there is one of these structures. 265189592Sbms * 266189592Sbms * If any source filters are present, then a node will exist in the RB-tree 267189592Sbms * to permit fast lookup by source whenever an operation takes place. 268189592Sbms * This permits pre-order traversal when we issue reports. 269189592Sbms * Source filter trees are kept separately from the socket layer to 270189592Sbms * greatly simplify locking. 271189592Sbms * 272189592Sbms * When IGMPv3 is active, inm_timer is the response to group query timer. 273189592Sbms * The state-change timer inm_sctimer is separate; whenever state changes 274189592Sbms * for the group the state change record is generated and transmitted, 275189592Sbms * and kept if retransmissions are necessary. 276189592Sbms * 277189592Sbms * FUTURE: inm_link is now only used when groups are being purged 278189592Sbms * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 279189592Sbms * because it is at the very start of the struct, we can't do this 280189592Sbms * w/o breaking the ABI for ifmcstat. 281189592Sbms */ 2821541Srgrimesstruct in_multi { 283189592Sbms LIST_ENTRY(in_multi) inm_link; /* to-be-released by in_ifdetach */ 28421666Swollman struct in_addr inm_addr; /* IP multicast address, convenience */ 2851541Srgrimes struct ifnet *inm_ifp; /* back pointer to ifnet */ 28621666Swollman struct ifmultiaddr *inm_ifma; /* back pointer to ifmultiaddr */ 287189592Sbms u_int inm_timer; /* IGMPv1/v2 group / v3 query timer */ 288189592Sbms u_int inm_state; /* state of the membership */ 289189592Sbms void *inm_rti; /* unused, legacy field */ 290167729Sbms u_int inm_refcount; /* reference count */ 291189592Sbms 292189592Sbms /* New fields for IGMPv3 follow. */ 293189592Sbms struct igmp_ifinfo *inm_igi; /* IGMP info */ 294189592Sbms SLIST_ENTRY(in_multi) inm_nrele; /* to-be-released by IGMP */ 295189592Sbms struct ip_msource_tree inm_srcs; /* tree of sources */ 296189592Sbms u_long inm_nsrc; /* # of tree entries */ 297189592Sbms 298189592Sbms struct ifqueue inm_scq; /* queue of pending 299189592Sbms * state-change packets */ 300189592Sbms struct timeval inm_lastgsrtv; /* Time of last G-S-R query */ 301189592Sbms uint16_t inm_sctimer; /* state-change timer */ 302189592Sbms uint16_t inm_scrv; /* state-change rexmit count */ 303189592Sbms 304189592Sbms /* 305189592Sbms * SSM state counters which track state at T0 (the time the last 306189592Sbms * state-change report's RV timer went to zero) and T1 307189592Sbms * (time of pending report, i.e. now). 308189592Sbms * Used for computing IGMPv3 state-change reports. Several refcounts 309189592Sbms * are maintained here to optimize for common use-cases. 310189592Sbms */ 311189592Sbms struct inm_st { 312189592Sbms uint16_t iss_fmode; /* IGMP filter mode */ 313189592Sbms uint16_t iss_asm; /* # of ASM listeners */ 314189592Sbms uint16_t iss_ex; /* # of exclusive members */ 315189592Sbms uint16_t iss_in; /* # of inclusive members */ 316189592Sbms uint16_t iss_rec; /* # of recorded sources */ 317189592Sbms } inm_st[2]; /* state at t0, t1 */ 3181541Srgrimes}; 3191541Srgrimes 320170613Sbms/* 321189592Sbms * Helper function to derive the filter mode on a source entry 322189592Sbms * from its internal counters. Predicates are: 323189592Sbms * A source is only excluded if all listeners exclude it. 324189592Sbms * A source is only included if no listeners exclude it, 325189592Sbms * and at least one listener includes it. 326189592Sbms * May be used by ifmcstat(8). 327170613Sbms */ 328189592Sbmsstatic __inline uint8_t 329189592Sbmsims_get_mode(const struct in_multi *inm, const struct ip_msource *ims, 330189592Sbms uint8_t t) 331189592Sbms{ 332170613Sbms 333189592Sbms t = !!t; 334189592Sbms if (inm->inm_st[t].iss_ex > 0 && 335189592Sbms inm->inm_st[t].iss_ex == ims->ims_st[t].ex) 336189592Sbms return (MCAST_EXCLUDE); 337189592Sbms else if (ims->ims_st[t].in > 0 && ims->ims_st[t].ex == 0) 338189592Sbms return (MCAST_INCLUDE); 339189592Sbms return (MCAST_UNDEFINED); 340189592Sbms} 341189592Sbms 34255205Speter#ifdef _KERNEL 34344078Sdfr 34444078Sdfr#ifdef SYSCTL_DECL 345136713SandreSYSCTL_DECL(_net_inet); 34644078SdfrSYSCTL_DECL(_net_inet_ip); 34744078SdfrSYSCTL_DECL(_net_inet_raw); 34844078Sdfr#endif 34944078Sdfr 3501541Srgrimes/* 351148682Srwatson * Lock macros for IPv4 layer multicast address lists. IPv4 lock goes 352148682Srwatson * before link layer multicast locks in the lock order. In most cases, 353148682Srwatson * consumers of IN_*_MULTI() macros should acquire the locks before 354148682Srwatson * calling them; users of the in_{add,del}multi() functions should not. 355148682Srwatson */ 356148682Srwatsonextern struct mtx in_multi_mtx; 357148682Srwatson#define IN_MULTI_LOCK() mtx_lock(&in_multi_mtx) 358148682Srwatson#define IN_MULTI_UNLOCK() mtx_unlock(&in_multi_mtx) 359148682Srwatson#define IN_MULTI_LOCK_ASSERT() mtx_assert(&in_multi_mtx, MA_OWNED) 360189592Sbms#define IN_MULTI_UNLOCK_ASSERT() mtx_assert(&in_multi_mtx, MA_NOTOWNED) 361148682Srwatson 362148682Srwatson/* 363189592Sbms * Function for looking up an in_multi record for an IPv4 multicast address 364189592Sbms * on a given interface. ifp must be valid. If no record found, return NULL. 365189592Sbms * The IN_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 3661541Srgrimes */ 367189592Sbmsstatic __inline struct in_multi * 368189592Sbmsinm_lookup_locked(struct ifnet *ifp, const struct in_addr ina) 369189592Sbms{ 370189592Sbms struct ifmultiaddr *ifma; 371189592Sbms struct in_multi *inm; 3721541Srgrimes 373189592Sbms IN_MULTI_LOCK_ASSERT(); 374189592Sbms IF_ADDR_LOCK_ASSERT(ifp); 375189592Sbms 376189592Sbms inm = NULL; 377189592Sbms TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 378189592Sbms if (ifma->ifma_addr->sa_family == AF_INET) { 379189592Sbms inm = (struct in_multi *)ifma->ifma_protospec; 380189592Sbms if (inm->inm_addr.s_addr == ina.s_addr) 381189592Sbms break; 382189592Sbms inm = NULL; 383189592Sbms } 384189592Sbms } 385189592Sbms return (inm); 386189592Sbms} 387189592Sbms 3881541Srgrimes/* 389189592Sbms * Wrapper for inm_lookup_locked(). 390189592Sbms * The IF_ADDR_LOCK will be taken on ifp and released on return. 3911541Srgrimes */ 392189592Sbmsstatic __inline struct in_multi * 393189592Sbmsinm_lookup(struct ifnet *ifp, const struct in_addr ina) 394189592Sbms{ 395189592Sbms struct in_multi *inm; 3961541Srgrimes 397189592Sbms IN_MULTI_LOCK_ASSERT(); 398233200Sjhb IF_ADDR_RLOCK(ifp); 399189592Sbms inm = inm_lookup_locked(ifp, ina); 400233200Sjhb IF_ADDR_RUNLOCK(ifp); 401189592Sbms 402189592Sbms return (inm); 403189592Sbms} 404189592Sbms 405189592Sbms/* Acquire an in_multi record. */ 406189592Sbmsstatic __inline void 407189592Sbmsinm_acquire_locked(struct in_multi *inm) 408189592Sbms{ 409189592Sbms 410189592Sbms IN_MULTI_LOCK_ASSERT(); 411189592Sbms ++inm->inm_refcount; 412189592Sbms} 413189592Sbms 4141541Srgrimes/* 415189592Sbms * Return values for imo_multi_filter(). 4161541Srgrimes */ 417189592Sbms#define MCAST_PASS 0 /* Pass */ 418189592Sbms#define MCAST_NOTGMEMBER 1 /* This host not a member of group */ 419189592Sbms#define MCAST_NOTSMEMBER 2 /* This host excluded source */ 420189592Sbms#define MCAST_MUTED 3 /* [deprecated] */ 4211541Srgrimes 422178888Sjulianstruct rtentry; 42336192Sdgstruct route; 424170613Sbmsstruct ip_moptions; 425242640Smelifarostruct radix_node_head; 426170613Sbms 427189592Sbmsint imo_multi_filter(const struct ip_moptions *, const struct ifnet *, 428189592Sbms const struct sockaddr *, const struct sockaddr *); 429189592Sbmsvoid inm_commit(struct in_multi *); 430189592Sbmsvoid inm_clear_recorded(struct in_multi *); 431189592Sbmsvoid inm_print(const struct in_multi *); 432189592Sbmsint inm_record_source(struct in_multi *inm, const in_addr_t); 433189592Sbmsvoid inm_release(struct in_multi *); 434189592Sbmsvoid inm_release_locked(struct in_multi *); 435189592Sbmsstruct in_multi * 436189592Sbms in_addmulti(struct in_addr *, struct ifnet *); 43792723Salfredvoid in_delmulti(struct in_multi *); 438189592Sbmsint in_joingroup(struct ifnet *, const struct in_addr *, 439189592Sbms /*const*/ struct in_mfilter *, struct in_multi **); 440189592Sbmsint in_joingroup_locked(struct ifnet *, const struct in_addr *, 441189592Sbms /*const*/ struct in_mfilter *, struct in_multi **); 442189592Sbmsint in_leavegroup(struct in_multi *, /*const*/ struct in_mfilter *); 443189592Sbmsint in_leavegroup_locked(struct in_multi *, 444189592Sbms /*const*/ struct in_mfilter *); 44592723Salfredint in_control(struct socket *, u_long, caddr_t, struct ifnet *, 44693085Sbde struct thread *); 44792723Salfredvoid in_rtqdrain(void); 44892723Salfredvoid ip_input(struct mbuf *); 44992723Salfredint in_ifadown(struct ifaddr *ifa, int); 450222143Sqinglivoid in_ifscrub(struct ifnet *, struct in_ifaddr *, u_int); 451154518Sandrestruct mbuf *ip_fastforward(struct mbuf *); 452186119Sqinglivoid *in_domifattach(struct ifnet *); 453186119Sqinglivoid in_domifdetach(struct ifnet *, void *); 4542169Spaul 455186119Sqingli 456178888Sjulian/* XXX */ 457178888Sjulianvoid in_rtalloc_ign(struct route *ro, u_long ignflags, u_int fibnum); 458178888Sjulianvoid in_rtalloc(struct route *ro, u_int fibnum); 459178888Sjulianstruct rtentry *in_rtalloc1(struct sockaddr *, int, u_long, u_int); 460178888Sjulianvoid in_rtredirect(struct sockaddr *, struct sockaddr *, 461178888Sjulian struct sockaddr *, int, struct sockaddr *, u_int); 462178888Sjulianint in_rtrequest(int, struct sockaddr *, 463178888Sjulian struct sockaddr *, struct sockaddr *, int, struct rtentry **, u_int); 464242640Smelifarovoid in_setmatchfunc(struct radix_node_head *, int); 465178888Sjulian 466178888Sjulian#if 0 467178888Sjulianint in_rt_getifa(struct rt_addrinfo *, u_int fibnum); 468178888Sjulianint in_rtioctl(u_long, caddr_t, u_int); 469178888Sjulianint in_rtrequest1(int, struct rt_addrinfo *, struct rtentry **, u_int); 470178888Sjulian#endif 47155205Speter#endif /* _KERNEL */ 47210939Swollman 47352904Sshin/* INET6 stuff */ 47452904Sshin#include <netinet6/in6_var.h> 47552904Sshin 47610939Swollman#endif /* _NETINET_IN_VAR_H_ */ 477