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: stable/10/sys/netinet/in_var.h 309340 2016-11-30 22:20:23Z vangyzen $ 311541Srgrimes */ 321541Srgrimes 332169Spaul#ifndef _NETINET_IN_VAR_H_ 342169Spaul#define _NETINET_IN_VAR_H_ 352169Spaul 36309340Svangyzen#include <sys/callout.h> 377280Swollman#include <sys/queue.h> 3884102Sjlemon#include <sys/fnv_hash.h> 39189592Sbms#include <sys/tree.h> 407280Swollman 41189592Sbmsstruct igmp_ifinfo; 42189592Sbmsstruct in_multi; 43189592Sbmsstruct lltable; 44189592Sbms 451541Srgrimes/* 46189592Sbms * IPv4 per-interface state. 47189592Sbms */ 48189592Sbmsstruct in_ifinfo { 49189592Sbms struct lltable *ii_llt; /* ARP state */ 50189592Sbms struct igmp_ifinfo *ii_igmp; /* IGMP state */ 51189592Sbms struct in_multi *ii_allhosts; /* 224.0.0.1 membership */ 52189592Sbms}; 53189592Sbms 54189592Sbms/* 551541Srgrimes * Interface address, Internet version. One of these structures 5621666Swollman * is allocated for each Internet address on an interface. 571541Srgrimes * The ifaddr structure contains the protocol-independent part 581541Srgrimes * of the structure and is assumed to be first. 591541Srgrimes */ 601541Srgrimesstruct in_ifaddr { 611541Srgrimes struct ifaddr ia_ifa; /* protocol-independent info */ 621541Srgrimes#define ia_ifp ia_ifa.ifa_ifp 631541Srgrimes#define ia_flags ia_ifa.ifa_flags 64226401Sglebius /* ia_subnet{,mask} in host order */ 65226401Sglebius u_long ia_subnet; /* subnet address */ 66226401Sglebius u_long ia_subnetmask; /* mask of subnet */ 6784102Sjlemon LIST_ENTRY(in_ifaddr) ia_hash; /* entry in bucket of inet addresses */ 6884102Sjlemon TAILQ_ENTRY(in_ifaddr) ia_link; /* list of internet addresses */ 691541Srgrimes struct sockaddr_in ia_addr; /* reserve space for interface name */ 701541Srgrimes struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */ 711541Srgrimes#define ia_broadaddr ia_dstaddr 721541Srgrimes struct sockaddr_in ia_sockmask; /* reserve space for general netmask */ 73309340Svangyzen struct callout ia_garp_timer; /* timer for retransmitting GARPs */ 74309340Svangyzen int ia_garp_count; /* count of retransmitted GARPs */ 751541Srgrimes}; 761541Srgrimes 771541Srgrimesstruct in_aliasreq { 781541Srgrimes char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 791541Srgrimes struct sockaddr_in ifra_addr; 801541Srgrimes struct sockaddr_in ifra_broadaddr; 811541Srgrimes#define ifra_dstaddr ifra_broadaddr 821541Srgrimes struct sockaddr_in ifra_mask; 83228571Sglebius int ifra_vhid; 841541Srgrimes}; 851541Srgrimes/* 861541Srgrimes * Given a pointer to an in_ifaddr (ifaddr), 871541Srgrimes * return a pointer to the addr as a sockaddr_in. 881541Srgrimes */ 893865Sswallace#define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr)) 903865Sswallace#define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr)) 91229815Sglebius#define IA_MASKSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_sockmask)) 921541Srgrimes 931541Srgrimes#define IN_LNAOF(in, ifa) \ 941541Srgrimes ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask)) 951541Srgrimes 968876Srgrimes 9755205Speter#ifdef _KERNEL 987090Sbdeextern u_char inetctlerrmap[]; 991541Srgrimes 100191120Skmacy#define LLTABLE(ifp) \ 101191120Skmacy ((struct in_ifinfo *)(ifp)->if_afdata[AF_INET])->ii_llt 102133874Srwatson/* 10384102Sjlemon * Hash table for IP addresses. 10484102Sjlemon */ 105186048SbzTAILQ_HEAD(in_ifaddrhead, in_ifaddr); 106186048SbzLIST_HEAD(in_ifaddrhashhead, in_ifaddr); 10784102Sjlemon 108195699SrwatsonVNET_DECLARE(struct in_ifaddrhashhead *, in_ifaddrhashtbl); 109195699SrwatsonVNET_DECLARE(struct in_ifaddrhead, in_ifaddrhead); 110195699SrwatsonVNET_DECLARE(u_long, in_ifaddrhmask); /* mask for hash table */ 111195699Srwatson 112195727Srwatson#define V_in_ifaddrhashtbl VNET(in_ifaddrhashtbl) 113195727Srwatson#define V_in_ifaddrhead VNET(in_ifaddrhead) 114195727Srwatson#define V_in_ifaddrhmask VNET(in_ifaddrhmask) 115195699Srwatson 11684102Sjlemon#define INADDR_NHASH_LOG2 9 11784102Sjlemon#define INADDR_NHASH (1 << INADDR_NHASH_LOG2) 11884102Sjlemon#define INADDR_HASHVAL(x) fnv_32_buf((&(x)), sizeof(x), FNV1_32_INIT) 11984102Sjlemon#define INADDR_HASH(x) \ 120181803Sbz (&V_in_ifaddrhashtbl[INADDR_HASHVAL(x) & V_in_ifaddrhmask]) 12184102Sjlemon 122250300Sandreextern struct rwlock in_ifaddr_lock; 123194951Srwatson 124194951Srwatson#define IN_IFADDR_LOCK_ASSERT() rw_assert(&in_ifaddr_lock, RA_LOCKED) 125194951Srwatson#define IN_IFADDR_RLOCK() rw_rlock(&in_ifaddr_lock) 126194951Srwatson#define IN_IFADDR_RLOCK_ASSERT() rw_assert(&in_ifaddr_lock, RA_RLOCKED) 127194951Srwatson#define IN_IFADDR_RUNLOCK() rw_runlock(&in_ifaddr_lock) 128194951Srwatson#define IN_IFADDR_WLOCK() rw_wlock(&in_ifaddr_lock) 129194951Srwatson#define IN_IFADDR_WLOCK_ASSERT() rw_assert(&in_ifaddr_lock, RA_WLOCKED) 130194951Srwatson#define IN_IFADDR_WUNLOCK() rw_wunlock(&in_ifaddr_lock) 131194951Srwatson 132162615Sbms/* 133162625Sbms * Macro for finding the internet address structure (in_ifaddr) 134162615Sbms * corresponding to one of our IP addresses (in_addr). 135162615Sbms */ 136162615Sbms#define INADDR_TO_IFADDR(addr, ia) \ 137162615Sbms /* struct in_addr addr; */ \ 138162615Sbms /* struct in_ifaddr *ia; */ \ 139162615Sbmsdo { \ 140162615Sbms\ 141162615Sbms LIST_FOREACH(ia, INADDR_HASH((addr).s_addr), ia_hash) \ 142162615Sbms if (IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \ 143162615Sbms break; \ 144162615Sbms} while (0) 14584102Sjlemon 1461541Srgrimes/* 1471541Srgrimes * Macro for finding the interface (ifnet structure) corresponding to one 1481541Srgrimes * of our IP addresses. 1491541Srgrimes */ 1501541Srgrimes#define INADDR_TO_IFP(addr, ifp) \ 1511541Srgrimes /* struct in_addr addr; */ \ 1521541Srgrimes /* struct ifnet *ifp; */ \ 1531541Srgrimes{ \ 15479821Sru struct in_ifaddr *ia; \ 1551541Srgrimes\ 156162615Sbms INADDR_TO_IFADDR(addr, ia); \ 1571541Srgrimes (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \ 1581541Srgrimes} 1591541Srgrimes 1601541Srgrimes/* 1611541Srgrimes * Macro for finding the internet address structure (in_ifaddr) corresponding 1621541Srgrimes * to a given interface (ifnet structure). 1631541Srgrimes */ 164194760Srwatson#define IFP_TO_IA(ifp, ia) \ 165194760Srwatson /* struct ifnet *ifp; */ \ 166194760Srwatson /* struct in_ifaddr *ia; */ \ 167238572Sglebiusdo { \ 168238572Sglebius IN_IFADDR_RLOCK(); \ 169194760Srwatson for ((ia) = TAILQ_FIRST(&V_in_ifaddrhead); \ 170194760Srwatson (ia) != NULL && (ia)->ia_ifp != (ifp); \ 171194760Srwatson (ia) = TAILQ_NEXT((ia), ia_link)) \ 172194760Srwatson continue; \ 173194760Srwatson if ((ia) != NULL) \ 174194760Srwatson ifa_ref(&(ia)->ia_ifa); \ 175238572Sglebius IN_IFADDR_RUNLOCK(); \ 176238572Sglebius} while (0) 1771541Srgrimes#endif 1781541Srgrimes 1791541Srgrimes/* 180185088Szec * IP datagram reassembly. 181185088Szec */ 182185088Szec#define IPREASS_NHASH_LOG2 6 183185088Szec#define IPREASS_NHASH (1 << IPREASS_NHASH_LOG2) 184185088Szec#define IPREASS_HMASK (IPREASS_NHASH - 1) 185185088Szec#define IPREASS_HASH(x,y) \ 186185088Szec (((((x) & 0xF) | ((((x) >> 8) & 0xF) << 4)) ^ (y)) & IPREASS_HMASK) 187185088Szec 188185088Szec/* 189189592Sbms * Legacy IPv4 IGMP per-link structure. 1902531Swollman */ 1912531Swollmanstruct router_info { 19214622Sfenner struct ifnet *rti_ifp; 19314622Sfenner int rti_type; /* type of router which is querier on this interface */ 19414622Sfenner int rti_time; /* # of slow timeouts since last old query */ 195119180Srwatson SLIST_ENTRY(router_info) rti_list; 1962531Swollman}; 1972531Swollman 1982531Swollman/* 199189592Sbms * Per-interface IGMP router version information. 2001541Srgrimes */ 201189592Sbmsstruct igmp_ifinfo { 202189592Sbms LIST_ENTRY(igmp_ifinfo) igi_link; 203189592Sbms struct ifnet *igi_ifp; /* interface this instance belongs to */ 204189592Sbms uint32_t igi_version; /* IGMPv3 Host Compatibility Mode */ 205189592Sbms uint32_t igi_v1_timer; /* IGMPv1 Querier Present timer (s) */ 206189592Sbms uint32_t igi_v2_timer; /* IGMPv2 Querier Present timer (s) */ 207189592Sbms uint32_t igi_v3_timer; /* IGMPv3 General Query (interface) timer (s)*/ 208189592Sbms uint32_t igi_flags; /* IGMP per-interface flags */ 209189592Sbms uint32_t igi_rv; /* IGMPv3 Robustness Variable */ 210189592Sbms uint32_t igi_qi; /* IGMPv3 Query Interval (s) */ 211189592Sbms uint32_t igi_qri; /* IGMPv3 Query Response Interval (s) */ 212189592Sbms uint32_t igi_uri; /* IGMPv3 Unsolicited Report Interval (s) */ 213189592Sbms SLIST_HEAD(,in_multi) igi_relinmhead; /* released groups */ 214189592Sbms struct ifqueue igi_gq; /* queue of general query responses */ 215189592Sbms}; 216189592Sbms 217189592Sbms#define IGIF_SILENT 0x00000001 /* Do not use IGMP on this ifp */ 218189592Sbms#define IGIF_LOOPBACK 0x00000002 /* Send IGMP reports to loopback */ 219189592Sbms 220189592Sbms/* 221189592Sbms * IPv4 multicast IGMP-layer source entry. 222189592Sbms */ 223189592Sbmsstruct ip_msource { 224189592Sbms RB_ENTRY(ip_msource) ims_link; /* RB tree links */ 225189592Sbms in_addr_t ims_haddr; /* host byte order */ 226189592Sbms struct ims_st { 227189592Sbms uint16_t ex; /* # of exclusive members */ 228189592Sbms uint16_t in; /* # of inclusive members */ 229189592Sbms } ims_st[2]; /* state at t0, t1 */ 230189592Sbms uint8_t ims_stp; /* pending query */ 231189592Sbms}; 232189592Sbms 233189592Sbms/* 234189592Sbms * IPv4 multicast PCB-layer source entry. 235189592Sbms */ 236189592Sbmsstruct in_msource { 237189592Sbms RB_ENTRY(ip_msource) ims_link; /* RB tree links */ 238189592Sbms in_addr_t ims_haddr; /* host byte order */ 239189592Sbms uint8_t imsl_st[2]; /* state before/at commit */ 240189592Sbms}; 241189592Sbms 242189592SbmsRB_HEAD(ip_msource_tree, ip_msource); /* define struct ip_msource_tree */ 243189592Sbms 244189592Sbmsstatic __inline int 245189592Sbmsip_msource_cmp(const struct ip_msource *a, const struct ip_msource *b) 246189592Sbms{ 247189592Sbms 248189592Sbms if (a->ims_haddr < b->ims_haddr) 249189592Sbms return (-1); 250189592Sbms if (a->ims_haddr == b->ims_haddr) 251189592Sbms return (0); 252189592Sbms return (1); 253189592Sbms} 254189592SbmsRB_PROTOTYPE(ip_msource_tree, ip_msource, ims_link, ip_msource_cmp); 255189592Sbms 256189592Sbms/* 257189592Sbms * IPv4 multicast PCB-layer group filter descriptor. 258189592Sbms */ 259189592Sbmsstruct in_mfilter { 260189592Sbms struct ip_msource_tree imf_sources; /* source list for (S,G) */ 261189592Sbms u_long imf_nsrc; /* # of source entries */ 262189592Sbms uint8_t imf_st[2]; /* state before/at commit */ 263189592Sbms}; 264189592Sbms 265189592Sbms/* 266189592Sbms * IPv4 group descriptor. 267189592Sbms * 268189592Sbms * For every entry on an ifnet's if_multiaddrs list which represents 269189592Sbms * an IP multicast group, there is one of these structures. 270189592Sbms * 271189592Sbms * If any source filters are present, then a node will exist in the RB-tree 272189592Sbms * to permit fast lookup by source whenever an operation takes place. 273189592Sbms * This permits pre-order traversal when we issue reports. 274189592Sbms * Source filter trees are kept separately from the socket layer to 275189592Sbms * greatly simplify locking. 276189592Sbms * 277189592Sbms * When IGMPv3 is active, inm_timer is the response to group query timer. 278189592Sbms * The state-change timer inm_sctimer is separate; whenever state changes 279189592Sbms * for the group the state change record is generated and transmitted, 280189592Sbms * and kept if retransmissions are necessary. 281189592Sbms * 282189592Sbms * FUTURE: inm_link is now only used when groups are being purged 283189592Sbms * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but 284189592Sbms * because it is at the very start of the struct, we can't do this 285189592Sbms * w/o breaking the ABI for ifmcstat. 286189592Sbms */ 2871541Srgrimesstruct in_multi { 288189592Sbms LIST_ENTRY(in_multi) inm_link; /* to-be-released by in_ifdetach */ 28921666Swollman struct in_addr inm_addr; /* IP multicast address, convenience */ 2901541Srgrimes struct ifnet *inm_ifp; /* back pointer to ifnet */ 29121666Swollman struct ifmultiaddr *inm_ifma; /* back pointer to ifmultiaddr */ 292189592Sbms u_int inm_timer; /* IGMPv1/v2 group / v3 query timer */ 293189592Sbms u_int inm_state; /* state of the membership */ 294189592Sbms void *inm_rti; /* unused, legacy field */ 295167729Sbms u_int inm_refcount; /* reference count */ 296189592Sbms 297189592Sbms /* New fields for IGMPv3 follow. */ 298189592Sbms struct igmp_ifinfo *inm_igi; /* IGMP info */ 299189592Sbms SLIST_ENTRY(in_multi) inm_nrele; /* to-be-released by IGMP */ 300189592Sbms struct ip_msource_tree inm_srcs; /* tree of sources */ 301189592Sbms u_long inm_nsrc; /* # of tree entries */ 302189592Sbms 303189592Sbms struct ifqueue inm_scq; /* queue of pending 304189592Sbms * state-change packets */ 305189592Sbms struct timeval inm_lastgsrtv; /* Time of last G-S-R query */ 306189592Sbms uint16_t inm_sctimer; /* state-change timer */ 307189592Sbms uint16_t inm_scrv; /* state-change rexmit count */ 308189592Sbms 309189592Sbms /* 310189592Sbms * SSM state counters which track state at T0 (the time the last 311189592Sbms * state-change report's RV timer went to zero) and T1 312189592Sbms * (time of pending report, i.e. now). 313189592Sbms * Used for computing IGMPv3 state-change reports. Several refcounts 314189592Sbms * are maintained here to optimize for common use-cases. 315189592Sbms */ 316189592Sbms struct inm_st { 317189592Sbms uint16_t iss_fmode; /* IGMP filter mode */ 318189592Sbms uint16_t iss_asm; /* # of ASM listeners */ 319189592Sbms uint16_t iss_ex; /* # of exclusive members */ 320189592Sbms uint16_t iss_in; /* # of inclusive members */ 321189592Sbms uint16_t iss_rec; /* # of recorded sources */ 322189592Sbms } inm_st[2]; /* state at t0, t1 */ 3231541Srgrimes}; 3241541Srgrimes 325170613Sbms/* 326189592Sbms * Helper function to derive the filter mode on a source entry 327189592Sbms * from its internal counters. Predicates are: 328189592Sbms * A source is only excluded if all listeners exclude it. 329189592Sbms * A source is only included if no listeners exclude it, 330189592Sbms * and at least one listener includes it. 331189592Sbms * May be used by ifmcstat(8). 332170613Sbms */ 333189592Sbmsstatic __inline uint8_t 334189592Sbmsims_get_mode(const struct in_multi *inm, const struct ip_msource *ims, 335189592Sbms uint8_t t) 336189592Sbms{ 337170613Sbms 338189592Sbms t = !!t; 339189592Sbms if (inm->inm_st[t].iss_ex > 0 && 340189592Sbms inm->inm_st[t].iss_ex == ims->ims_st[t].ex) 341189592Sbms return (MCAST_EXCLUDE); 342189592Sbms else if (ims->ims_st[t].in > 0 && ims->ims_st[t].ex == 0) 343189592Sbms return (MCAST_INCLUDE); 344189592Sbms return (MCAST_UNDEFINED); 345189592Sbms} 346189592Sbms 34755205Speter#ifdef _KERNEL 34844078Sdfr 34944078Sdfr#ifdef SYSCTL_DECL 350136713SandreSYSCTL_DECL(_net_inet); 35144078SdfrSYSCTL_DECL(_net_inet_ip); 35244078SdfrSYSCTL_DECL(_net_inet_raw); 35344078Sdfr#endif 35444078Sdfr 3551541Srgrimes/* 356148682Srwatson * Lock macros for IPv4 layer multicast address lists. IPv4 lock goes 357148682Srwatson * before link layer multicast locks in the lock order. In most cases, 358148682Srwatson * consumers of IN_*_MULTI() macros should acquire the locks before 359148682Srwatson * calling them; users of the in_{add,del}multi() functions should not. 360148682Srwatson */ 361148682Srwatsonextern struct mtx in_multi_mtx; 362148682Srwatson#define IN_MULTI_LOCK() mtx_lock(&in_multi_mtx) 363148682Srwatson#define IN_MULTI_UNLOCK() mtx_unlock(&in_multi_mtx) 364148682Srwatson#define IN_MULTI_LOCK_ASSERT() mtx_assert(&in_multi_mtx, MA_OWNED) 365189592Sbms#define IN_MULTI_UNLOCK_ASSERT() mtx_assert(&in_multi_mtx, MA_NOTOWNED) 366148682Srwatson 367148682Srwatson/* 368189592Sbms * Function for looking up an in_multi record for an IPv4 multicast address 369189592Sbms * on a given interface. ifp must be valid. If no record found, return NULL. 370189592Sbms * The IN_MULTI_LOCK and IF_ADDR_LOCK on ifp must be held. 3711541Srgrimes */ 372189592Sbmsstatic __inline struct in_multi * 373189592Sbmsinm_lookup_locked(struct ifnet *ifp, const struct in_addr ina) 374189592Sbms{ 375189592Sbms struct ifmultiaddr *ifma; 376189592Sbms struct in_multi *inm; 3771541Srgrimes 378189592Sbms IN_MULTI_LOCK_ASSERT(); 379189592Sbms IF_ADDR_LOCK_ASSERT(ifp); 380189592Sbms 381189592Sbms inm = NULL; 382189592Sbms TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { 383189592Sbms if (ifma->ifma_addr->sa_family == AF_INET) { 384189592Sbms inm = (struct in_multi *)ifma->ifma_protospec; 385189592Sbms if (inm->inm_addr.s_addr == ina.s_addr) 386189592Sbms break; 387189592Sbms inm = NULL; 388189592Sbms } 389189592Sbms } 390189592Sbms return (inm); 391189592Sbms} 392189592Sbms 3931541Srgrimes/* 394189592Sbms * Wrapper for inm_lookup_locked(). 395189592Sbms * The IF_ADDR_LOCK will be taken on ifp and released on return. 3961541Srgrimes */ 397189592Sbmsstatic __inline struct in_multi * 398189592Sbmsinm_lookup(struct ifnet *ifp, const struct in_addr ina) 399189592Sbms{ 400189592Sbms struct in_multi *inm; 4011541Srgrimes 402189592Sbms IN_MULTI_LOCK_ASSERT(); 403229621Sjhb IF_ADDR_RLOCK(ifp); 404189592Sbms inm = inm_lookup_locked(ifp, ina); 405229621Sjhb IF_ADDR_RUNLOCK(ifp); 406189592Sbms 407189592Sbms return (inm); 408189592Sbms} 409189592Sbms 410189592Sbms/* Acquire an in_multi record. */ 411189592Sbmsstatic __inline void 412189592Sbmsinm_acquire_locked(struct in_multi *inm) 413189592Sbms{ 414189592Sbms 415189592Sbms IN_MULTI_LOCK_ASSERT(); 416189592Sbms ++inm->inm_refcount; 417189592Sbms} 418189592Sbms 4191541Srgrimes/* 420189592Sbms * Return values for imo_multi_filter(). 4211541Srgrimes */ 422189592Sbms#define MCAST_PASS 0 /* Pass */ 423189592Sbms#define MCAST_NOTGMEMBER 1 /* This host not a member of group */ 424189592Sbms#define MCAST_NOTSMEMBER 2 /* This host excluded source */ 425189592Sbms#define MCAST_MUTED 3 /* [deprecated] */ 4261541Srgrimes 427178888Sjulianstruct rtentry; 42836192Sdgstruct route; 429170613Sbmsstruct ip_moptions; 430241406Smelifarostruct radix_node_head; 431170613Sbms 432189592Sbmsint imo_multi_filter(const struct ip_moptions *, const struct ifnet *, 433189592Sbms const struct sockaddr *, const struct sockaddr *); 434189592Sbmsvoid inm_commit(struct in_multi *); 435189592Sbmsvoid inm_clear_recorded(struct in_multi *); 436189592Sbmsvoid inm_print(const struct in_multi *); 437189592Sbmsint inm_record_source(struct in_multi *inm, const in_addr_t); 438189592Sbmsvoid inm_release(struct in_multi *); 439189592Sbmsvoid inm_release_locked(struct in_multi *); 440189592Sbmsstruct in_multi * 441189592Sbms in_addmulti(struct in_addr *, struct ifnet *); 44292723Salfredvoid in_delmulti(struct in_multi *); 443189592Sbmsint in_joingroup(struct ifnet *, const struct in_addr *, 444189592Sbms /*const*/ struct in_mfilter *, struct in_multi **); 445189592Sbmsint in_joingroup_locked(struct ifnet *, const struct in_addr *, 446189592Sbms /*const*/ struct in_mfilter *, struct in_multi **); 447189592Sbmsint in_leavegroup(struct in_multi *, /*const*/ struct in_mfilter *); 448189592Sbmsint in_leavegroup_locked(struct in_multi *, 449189592Sbms /*const*/ struct in_mfilter *); 45092723Salfredint in_control(struct socket *, u_long, caddr_t, struct ifnet *, 45193085Sbde struct thread *); 45292723Salfredvoid in_rtqdrain(void); 453228571Sglebiusint in_addprefix(struct in_ifaddr *, int); 454228571Sglebiusint in_scrubprefix(struct in_ifaddr *, u_int); 45592723Salfredvoid ip_input(struct mbuf *); 45692723Salfredint in_ifadown(struct ifaddr *ifa, int); 457222143Sqinglivoid in_ifscrub(struct ifnet *, struct in_ifaddr *, u_int); 458295896Sgnnstruct mbuf *ip_fastforward(struct mbuf *); 459186119Sqinglivoid *in_domifattach(struct ifnet *); 460186119Sqinglivoid in_domifdetach(struct ifnet *, void *); 4612169Spaul 462186119Sqingli 463178888Sjulian/* XXX */ 464178888Sjulianvoid in_rtalloc_ign(struct route *ro, u_long ignflags, u_int fibnum); 465178888Sjulianvoid in_rtalloc(struct route *ro, u_int fibnum); 466178888Sjulianstruct rtentry *in_rtalloc1(struct sockaddr *, int, u_long, u_int); 467178888Sjulianvoid in_rtredirect(struct sockaddr *, struct sockaddr *, 468178888Sjulian struct sockaddr *, int, struct sockaddr *, u_int); 469178888Sjulianint in_rtrequest(int, struct sockaddr *, 470178888Sjulian struct sockaddr *, struct sockaddr *, int, struct rtentry **, u_int); 471241406Smelifarovoid in_setmatchfunc(struct radix_node_head *, int); 472178888Sjulian 473178888Sjulian#if 0 474178888Sjulianint in_rt_getifa(struct rt_addrinfo *, u_int fibnum); 475178888Sjulianint in_rtioctl(u_long, caddr_t, u_int); 476178888Sjulianint in_rtrequest1(int, struct rt_addrinfo *, struct rtentry **, u_int); 477178888Sjulian#endif 47855205Speter#endif /* _KERNEL */ 47910939Swollman 48052904Sshin/* INET6 stuff */ 48152904Sshin#include <netinet6/in6_var.h> 48252904Sshin 48310939Swollman#endif /* _NETINET_IN_VAR_H_ */ 484