1139823Simp/*- 21541Srgrimes * Copyright (c) 1980, 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 * 2985052Sru * @(#)route.h 8.4 (Berkeley) 1/9/95 3050477Speter * $FreeBSD: stable/11/sys/net/route.h 341241 2018-11-29 15:56:46Z markj $ 311541Srgrimes */ 321541Srgrimes 332168Spaul#ifndef _NET_ROUTE_H_ 342168Spaul#define _NET_ROUTE_H_ 352168Spaul 36262763Sglebius#include <sys/counter.h> 37271916Shrs#include <net/vnet.h> 38262763Sglebius 391541Srgrimes/* 401541Srgrimes * Kernel resident routing tables. 418876Srgrimes * 421541Srgrimes * The routing tables are initialized when interface addresses 431541Srgrimes * are set by making entries for all directly connected interfaces. 441541Srgrimes */ 451541Srgrimes 461541Srgrimes/* 47293098Smelifaro * Struct route consiste of a destination address, 48293098Smelifaro * a route entry pointer, link-layer prepend data pointer along 49293098Smelifaro * with its length. 501541Srgrimes */ 511541Srgrimesstruct route { 521541Srgrimes struct rtentry *ro_rt; 53301217Sgnn struct llentry *ro_lle; 54301217Sgnn /* 55301217Sgnn * ro_prepend and ro_plen are only used for bpf to pass in a 56301217Sgnn * preformed header. They are not cacheable. 57301217Sgnn */ 58292978Smelifaro char *ro_prepend; 59292978Smelifaro uint16_t ro_plen; 60292978Smelifaro uint16_t ro_flags; 61293098Smelifaro uint16_t ro_mtu; /* saved ro_rt mtu */ 62293098Smelifaro uint16_t spare; 631541Srgrimes struct sockaddr ro_dst; 641541Srgrimes}; 651541Srgrimes 66292978Smelifaro#define RT_L2_ME_BIT 2 /* dst L2 addr is our address */ 67292978Smelifaro#define RT_MAY_LOOP_BIT 3 /* dst may require loop copy */ 68292978Smelifaro#define RT_HAS_HEADER_BIT 4 /* mbuf already have its header prepended */ 69292978Smelifaro 70238092Sglebius#define RT_CACHING_CONTEXT 0x1 /* XXX: not used anywhere */ 71238092Sglebius#define RT_NORTREF 0x2 /* doesn't hold reference on ro_rt */ 72293544Smelifaro#define RT_L2_ME (1 << RT_L2_ME_BIT) /* 0x0004 */ 73293544Smelifaro#define RT_MAY_LOOP (1 << RT_MAY_LOOP_BIT) /* 0x0008 */ 74293544Smelifaro#define RT_HAS_HEADER (1 << RT_HAS_HEADER_BIT) /* 0x0010 */ 75225698Skmacy 76293544Smelifaro#define RT_REJECT 0x0020 /* Destination is reject */ 77293544Smelifaro#define RT_BLACKHOLE 0x0040 /* Destination is blackhole */ 78293544Smelifaro#define RT_HAS_GW 0x0080 /* Destination has GW */ 79301217Sgnn#define RT_LLE_CACHE 0x0100 /* Cache link layer */ 80293544Smelifaro 811541Srgrimesstruct rt_metrics { 821541Srgrimes u_long rmx_locks; /* Kernel must leave these values alone */ 831541Srgrimes u_long rmx_mtu; /* MTU for this path */ 841541Srgrimes u_long rmx_hopcount; /* max hops expected */ 851541Srgrimes u_long rmx_expire; /* lifetime for route, e.g. redirect */ 8613765Smpp u_long rmx_recvpipe; /* inbound delay-bandwidth product */ 8713765Smpp u_long rmx_sendpipe; /* outbound delay-bandwidth product */ 881541Srgrimes u_long rmx_ssthresh; /* outbound gateway buffer limit */ 891541Srgrimes u_long rmx_rtt; /* estimated round trip time */ 901541Srgrimes u_long rmx_rttvar; /* estimated rtt variance */ 911541Srgrimes u_long rmx_pksent; /* packets sent using this route */ 92191080Skmacy u_long rmx_weight; /* route weight */ 93191080Skmacy u_long rmx_filler[3]; /* will be used for T/TCP later */ 941541Srgrimes}; 951541Srgrimes 961541Srgrimes/* 971541Srgrimes * rmx_rtt and rmx_rttvar are stored as microseconds; 981541Srgrimes * RTTTOPRHZ(rtt) converts to a value suitable for use 991541Srgrimes * by a protocol slowtimo counter. 1001541Srgrimes */ 1011541Srgrimes#define RTM_RTTUNIT 1000000 /* units for rtt, rttvar, as units per sec */ 1021541Srgrimes#define RTTTOPRHZ(r) ((r) / (RTM_RTTUNIT / PR_SLOWHZ)) 1031541Srgrimes 104292333Smelifaro/* lle state is exported in rmx_state rt_metrics field */ 105292333Smelifaro#define rmx_state rmx_weight 106292333Smelifaro 107297225Sgnn/* 108297225Sgnn * Keep a generation count of routing table, incremented on route addition, 109297225Sgnn * so we can invalidate caches. This is accessed without a lock, as precision 110297225Sgnn * is not required. 111297225Sgnn */ 112297225Sgnntypedef volatile u_int rt_gen_t; /* tree generation (for adds) */ 113297225Sgnn#define RT_GEN(fibnum, af) rt_tables_get_gen(fibnum, af) 114297225Sgnn 115231852Sbz#define RT_DEFAULT_FIB 0 /* Explicitly mark fib=0 restricted cases */ 116260460Smelifaro#define RT_ALL_FIBS -1 /* Announce event for every fib */ 117271923Shrs#ifdef _KERNEL 118260460Smelifaroextern u_int rt_numfibs; /* number of usable routing tables */ 119271916ShrsVNET_DECLARE(u_int, rt_add_addr_allfibs); /* Announce interfaces to all fibs */ 120271916Shrs#define V_rt_add_addr_allfibs VNET(rt_add_addr_allfibs) 121271923Shrs#endif 1225833Sbde 1235833Sbde/* 1241541Srgrimes * We distinguish between routes to hosts and routes to networks, 1251541Srgrimes * preferring the former if available. For each route we infer 1261541Srgrimes * the interface to use from the gateway address supplied when 1271541Srgrimes * the route was entered. Routes that forward packets through 1281541Srgrimes * gateways are marked so that the output routines know to address the 1291541Srgrimes * gateway rather than the ultimate destination. 1301541Srgrimes */ 1311541Srgrimes#ifndef RNF_NORMAL 1321541Srgrimes#include <net/radix.h> 133178167Sqingli#ifdef RADIX_MPATH 134178167Sqingli#include <net/radix_mpath.h> 1351541Srgrimes#endif 136178167Sqingli#endif 137262767Sglebius 138262767Sglebius#if defined(_KERNEL) || defined(_WANT_RTENTRY) 1391541Srgrimesstruct rtentry { 1401541Srgrimes struct radix_node rt_nodes[2]; /* tree glue, and other values */ 141128454Sluigi /* 142128454Sluigi * XXX struct rtentry must begin with a struct radix_node (or two!) 143128454Sluigi * because the code does some casts of a 'struct radix_node *' 144128454Sluigi * to a 'struct rtentry *' 145128454Sluigi */ 146132780Skan#define rt_key(r) (*((struct sockaddr **)(&(r)->rt_nodes->rn_key))) 147132780Skan#define rt_mask(r) (*((struct sockaddr **)(&(r)->rt_nodes->rn_mask))) 1481541Srgrimes struct sockaddr *rt_gateway; /* value */ 1491541Srgrimes struct ifnet *rt_ifp; /* the answer: interface to use */ 150122922Sandre struct ifaddr *rt_ifa; /* the answer: interface address to use */ 151262763Sglebius int rt_flags; /* up/down?, host/net */ 152262763Sglebius int rt_refcnt; /* # held references */ 153262763Sglebius u_int rt_fibnum; /* which FIB */ 154262763Sglebius u_long rt_mtu; /* MTU for this path */ 155262763Sglebius u_long rt_weight; /* absolute weight */ 156262763Sglebius u_long rt_expire; /* lifetime for route, e.g. redirect */ 157262763Sglebius#define rt_endzero rt_pksent 158262763Sglebius counter_u64_t rt_pksent; /* packets sent using this route */ 159262763Sglebius struct mtx rt_mtx; /* mutex for routing entry */ 160291466Smelifaro struct rtentry *rt_chain; /* pointer to next rtentry to delete */ 1611541Srgrimes}; 162262767Sglebius#endif /* _KERNEL || _WANT_RTENTRY */ 1631541Srgrimes 1641541Srgrimes#define RTF_UP 0x1 /* route usable */ 1651541Srgrimes#define RTF_GATEWAY 0x2 /* destination is a gateway */ 1661541Srgrimes#define RTF_HOST 0x4 /* host entry (net otherwise) */ 1671541Srgrimes#define RTF_REJECT 0x8 /* host or net unreachable */ 1681541Srgrimes#define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */ 1691541Srgrimes#define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */ 1701541Srgrimes#define RTF_DONE 0x40 /* message confirmed */ 17186764Sjlemon/* 0x80 unused, was RTF_DELCLONE */ 172186119Sqingli/* 0x100 unused, was RTF_CLONING */ 1731541Srgrimes#define RTF_XRESOLVE 0x200 /* external daemon resolves name */ 174187094Sqingli#define RTF_LLINFO 0x400 /* DEPRECATED - exists ONLY for backward 175187094Sqingli compatibility */ 176186500Sqingli#define RTF_LLDATA 0x400 /* used by apps to add/del L2 entries */ 1771541Srgrimes#define RTF_STATIC 0x800 /* manually added */ 1781541Srgrimes#define RTF_BLACKHOLE 0x1000 /* just discard pkts (during updates) */ 1791541Srgrimes#define RTF_PROTO2 0x4000 /* protocol specific routing flag */ 1801541Srgrimes#define RTF_PROTO1 0x8000 /* protocol specific routing flag */ 181263203Sglebius/* 0x10000 unused, was RTF_PRCLONING */ 182186119Sqingli/* 0x20000 unused, was RTF_WASCLONED */ 1835099Swollman#define RTF_PROTO3 0x40000 /* protocol specific routing flag */ 184274611Smelifaro#define RTF_FIXEDMTU 0x80000 /* MTU was explicitly specified */ 185248070Smelifaro#define RTF_PINNED 0x100000 /* route is immutable */ 18615652Swollman#define RTF_LOCAL 0x200000 /* route represents a local address */ 18715652Swollman#define RTF_BROADCAST 0x400000 /* route represents a bcast address */ 18815652Swollman#define RTF_MULTICAST 0x800000 /* route represents a mcast address */ 189191080Skmacy /* 0x8000000 and up unassigned */ 190191080Skmacy#define RTF_STICKY 0x10000000 /* always route dst->src */ 1911541Srgrimes 192320134Sae#define RTF_RNH_LOCKED 0x40000000 /* radix node head is locked */ 193191080Skmacy 194252184Sqingli#define RTF_GWFLAG_COMPAT 0x80000000 /* a compatibility bit for interacting 195252184Sqingli with existing routing apps */ 196252184Sqingli 197156750Sandre/* Mask of RTF flags that are allowed to be modified by RTM_CHANGE. */ 198156750Sandre#define RTF_FMASK \ 199156750Sandre (RTF_PROTO1 | RTF_PROTO2 | RTF_PROTO3 | RTF_BLACKHOLE | \ 200191080Skmacy RTF_REJECT | RTF_STATIC | RTF_STICKY) 201156750Sandre 2021541Srgrimes/* 203291993Smelifaro * fib_ nexthop API flags. 204291993Smelifaro */ 205291993Smelifaro 206291993Smelifaro/* Consumer-visible nexthop info flags */ 207291993Smelifaro#define NHF_REJECT 0x0010 /* RTF_REJECT */ 208291993Smelifaro#define NHF_BLACKHOLE 0x0020 /* RTF_BLACKHOLE */ 209291993Smelifaro#define NHF_REDIRECT 0x0040 /* RTF_DYNAMIC|RTF_MODIFIED */ 210291993Smelifaro#define NHF_DEFAULT 0x0080 /* Default route */ 211291993Smelifaro#define NHF_BROADCAST 0x0100 /* RTF_BROADCAST */ 212291993Smelifaro#define NHF_GATEWAY 0x0200 /* RTF_GATEWAY */ 213291993Smelifaro 214291993Smelifaro/* Nexthop request flags */ 215291993Smelifaro#define NHR_IFAIF 0x01 /* Return ifa_ifp interface */ 216291993Smelifaro#define NHR_REF 0x02 /* For future use */ 217291993Smelifaro 218293159Smelifaro/* Control plane route request flags */ 219293159Smelifaro#define NHR_COPY 0x100 /* Copy rte data */ 220293159Smelifaro 221293611Smelifaro#ifdef _KERNEL 222293544Smelifaro/* rte<>ro_flags translation */ 223293544Smelifarostatic inline void 224293544Smelifarort_update_ro_flags(struct route *ro) 225293544Smelifaro{ 226293544Smelifaro int rt_flags = ro->ro_rt->rt_flags; 227293544Smelifaro 228293544Smelifaro ro->ro_flags &= ~ (RT_REJECT|RT_BLACKHOLE|RT_HAS_GW); 229293544Smelifaro 230293656Smelifaro ro->ro_flags |= (rt_flags & RTF_REJECT) ? RT_REJECT : 0; 231293544Smelifaro ro->ro_flags |= (rt_flags & RTF_BLACKHOLE) ? RT_BLACKHOLE : 0; 232293544Smelifaro ro->ro_flags |= (rt_flags & RTF_GATEWAY) ? RT_HAS_GW : 0; 233293544Smelifaro} 234293611Smelifaro#endif 235293544Smelifaro 236291993Smelifaro/* 2371541Srgrimes * Routing statistics. 2381541Srgrimes */ 2391541Srgrimesstruct rtstat { 2401541Srgrimes short rts_badredirect; /* bogus redirect calls */ 2411541Srgrimes short rts_dynamic; /* routes created by redirects */ 2421541Srgrimes short rts_newgateway; /* routes modified by redirects */ 2431541Srgrimes short rts_unreach; /* lookups which failed */ 2441541Srgrimes short rts_wildcard; /* lookups satisfied by a wildcard */ 2451541Srgrimes}; 2461541Srgrimes/* 2471541Srgrimes * Structures for routing messages. 2481541Srgrimes */ 2491541Srgrimesstruct rt_msghdr { 2501541Srgrimes u_short rtm_msglen; /* to skip over non-understood messages */ 2511541Srgrimes u_char rtm_version; /* future binary compatibility */ 2521541Srgrimes u_char rtm_type; /* message type */ 2531541Srgrimes u_short rtm_index; /* index for associated ifp */ 254341241Smarkj u_short _rtm_spare1; 2551541Srgrimes int rtm_flags; /* flags, incl. kern & message, e.g. DONE */ 2561541Srgrimes int rtm_addrs; /* bitmask identifying sockaddrs in msg */ 2571541Srgrimes pid_t rtm_pid; /* identify sender */ 2581541Srgrimes int rtm_seq; /* for sender to identify action */ 2591541Srgrimes int rtm_errno; /* why failed */ 260156750Sandre int rtm_fmask; /* bitmask used in RTM_CHANGE message */ 2611541Srgrimes u_long rtm_inits; /* which metrics we are initializing */ 2621541Srgrimes struct rt_metrics rtm_rmx; /* metrics themselves */ 2631541Srgrimes}; 2641541Srgrimes 265191124Skmacy#define RTM_VERSION 5 /* Up the ante and ignore older versions */ 2661541Srgrimes 26751252Sru/* 26851252Sru * Message types. 26951252Sru */ 2701541Srgrimes#define RTM_ADD 0x1 /* Add Route */ 2711541Srgrimes#define RTM_DELETE 0x2 /* Delete Route */ 2721541Srgrimes#define RTM_CHANGE 0x3 /* Change Metrics or flags */ 2731541Srgrimes#define RTM_GET 0x4 /* Report Metrics */ 2741541Srgrimes#define RTM_LOSING 0x5 /* Kernel Suspects Partitioning */ 2751541Srgrimes#define RTM_REDIRECT 0x6 /* Told to use different route */ 2761541Srgrimes#define RTM_MISS 0x7 /* Lookup failed on this address */ 2771541Srgrimes#define RTM_LOCK 0x8 /* fix specified metrics */ 278263203Sglebius /* 0x9 */ 279263203Sglebius /* 0xa */ 2801541Srgrimes#define RTM_RESOLVE 0xb /* req to resolve dst to LL addr */ 2811541Srgrimes#define RTM_NEWADDR 0xc /* address being added to iface */ 2821541Srgrimes#define RTM_DELADDR 0xd /* address being removed from iface */ 2831541Srgrimes#define RTM_IFINFO 0xe /* iface going up/down etc. */ 28421666Swollman#define RTM_NEWMADDR 0xf /* mcast group membership being added to if */ 28521666Swollman#define RTM_DELMADDR 0x10 /* mcast group membership being deleted */ 28689498Sru#define RTM_IFANNOUNCE 0x11 /* iface arrival/departure */ 287136155Ssam#define RTM_IEEE80211 0x12 /* IEEE80211 wireless event */ 2881541Srgrimes 28951252Sru/* 29051252Sru * Bitmask values for rtm_inits and rmx_locks. 29151252Sru */ 2921541Srgrimes#define RTV_MTU 0x1 /* init or lock _mtu */ 2931541Srgrimes#define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */ 29451252Sru#define RTV_EXPIRE 0x4 /* init or lock _expire */ 2951541Srgrimes#define RTV_RPIPE 0x8 /* init or lock _recvpipe */ 2961541Srgrimes#define RTV_SPIPE 0x10 /* init or lock _sendpipe */ 2971541Srgrimes#define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */ 2981541Srgrimes#define RTV_RTT 0x40 /* init or lock _rtt */ 2991541Srgrimes#define RTV_RTTVAR 0x80 /* init or lock _rttvar */ 300191080Skmacy#define RTV_WEIGHT 0x100 /* init or lock _weight */ 3011541Srgrimes 3021541Srgrimes/* 30351252Sru * Bitmask values for rtm_addrs. 3041541Srgrimes */ 3051541Srgrimes#define RTA_DST 0x1 /* destination sockaddr present */ 3061541Srgrimes#define RTA_GATEWAY 0x2 /* gateway sockaddr present */ 3071541Srgrimes#define RTA_NETMASK 0x4 /* netmask sockaddr present */ 3081541Srgrimes#define RTA_GENMASK 0x8 /* cloning mask sockaddr present */ 3091541Srgrimes#define RTA_IFP 0x10 /* interface name sockaddr present */ 3101541Srgrimes#define RTA_IFA 0x20 /* interface addr sockaddr present */ 3111541Srgrimes#define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */ 3121541Srgrimes#define RTA_BRD 0x80 /* for NEWADDR, broadcast or p-p dest addr */ 3131541Srgrimes 3141541Srgrimes/* 3151541Srgrimes * Index offsets for sockaddr array for alternate internal encoding. 3161541Srgrimes */ 3171541Srgrimes#define RTAX_DST 0 /* destination sockaddr present */ 3181541Srgrimes#define RTAX_GATEWAY 1 /* gateway sockaddr present */ 3191541Srgrimes#define RTAX_NETMASK 2 /* netmask sockaddr present */ 3201541Srgrimes#define RTAX_GENMASK 3 /* cloning mask sockaddr present */ 3211541Srgrimes#define RTAX_IFP 4 /* interface name sockaddr present */ 3221541Srgrimes#define RTAX_IFA 5 /* interface addr sockaddr present */ 3231541Srgrimes#define RTAX_AUTHOR 6 /* sockaddr for author of redirect */ 3241541Srgrimes#define RTAX_BRD 7 /* for NEWADDR, broadcast or p-p dest addr */ 3251541Srgrimes#define RTAX_MAX 8 /* size of array to allocate */ 3261541Srgrimes 327291466Smelifarotypedef int rt_filter_f_t(const struct rtentry *, void *); 328291466Smelifaro 3291541Srgrimesstruct rt_addrinfo { 330291466Smelifaro int rti_addrs; /* Route RTF_ flags */ 331291466Smelifaro int rti_flags; /* Route RTF_ flags */ 332291466Smelifaro struct sockaddr *rti_info[RTAX_MAX]; /* Sockaddr data */ 333291466Smelifaro struct ifaddr *rti_ifa; /* value of rt_ifa addr */ 334291466Smelifaro struct ifnet *rti_ifp; /* route interface */ 335291466Smelifaro rt_filter_f_t *rti_filter; /* filter function */ 336291466Smelifaro void *rti_filterdata; /* filter paramenters */ 337291466Smelifaro u_long rti_mflags; /* metrics RTV_ flags */ 338291466Smelifaro u_long rti_spare; /* Will be used for fib */ 339291466Smelifaro struct rt_metrics *rti_rmx; /* Pointer to route metrics */ 3401541Srgrimes}; 3411541Srgrimes 342128185Sluigi/* 343128185Sluigi * This macro returns the size of a struct sockaddr when passed 344128185Sluigi * through a routing socket. Basically we round up sa_len to 345128185Sluigi * a multiple of sizeof(long), with a minimum of sizeof(long). 346128185Sluigi * The check for a NULL pointer is just a convenience, probably never used. 347128185Sluigi * The case sa_len == 0 should only apply to empty structures. 348128185Sluigi */ 349128185Sluigi#define SA_SIZE(sa) \ 350128185Sluigi ( (!(sa) || ((struct sockaddr *)(sa))->sa_len == 0) ? \ 351128185Sluigi sizeof(long) : \ 352128185Sluigi 1 + ( (((struct sockaddr *)(sa))->sa_len - 1) | (sizeof(long) - 1) ) ) 353128185Sluigi 354264973Smelifaro#define sa_equal(a, b) ( \ 355287476Smelifaro (((const struct sockaddr *)(a))->sa_len == ((const struct sockaddr *)(b))->sa_len) && \ 356287476Smelifaro (bcmp((a), (b), ((const struct sockaddr *)(b))->sa_len) == 0)) 357264973Smelifaro 35855205Speter#ifdef _KERNEL 359117752Shsu 360205222Sqingli#define RT_LINK_IS_UP(ifp) (!((ifp)->if_capabilities & IFCAP_LINKSTATE) \ 361205024Sqingli || (ifp)->if_link_state == LINK_STATE_UP) 362204902Sqingli 363120727Ssam#define RT_LOCK_INIT(_rt) \ 364120727Ssam mtx_init(&(_rt)->rt_mtx, "rtentry", NULL, MTX_DEF | MTX_DUPOK) 365120727Ssam#define RT_LOCK(_rt) mtx_lock(&(_rt)->rt_mtx) 366120727Ssam#define RT_UNLOCK(_rt) mtx_unlock(&(_rt)->rt_mtx) 367120727Ssam#define RT_LOCK_DESTROY(_rt) mtx_destroy(&(_rt)->rt_mtx) 368120727Ssam#define RT_LOCK_ASSERT(_rt) mtx_assert(&(_rt)->rt_mtx, MA_OWNED) 369262806Sglebius#define RT_UNLOCK_COND(_rt) do { \ 370262806Sglebius if (mtx_owned(&(_rt)->rt_mtx)) \ 371262806Sglebius mtx_unlock(&(_rt)->rt_mtx); \ 372262806Sglebius} while (0) 373117752Shsu 374122334Ssam#define RT_ADDREF(_rt) do { \ 375122334Ssam RT_LOCK_ASSERT(_rt); \ 376122334Ssam KASSERT((_rt)->rt_refcnt >= 0, \ 377186119Sqingli ("negative refcnt %d", (_rt)->rt_refcnt)); \ 378122334Ssam (_rt)->rt_refcnt++; \ 379150130Sandre} while (0) 380182801Sjulian 381122334Ssam#define RT_REMREF(_rt) do { \ 382122334Ssam RT_LOCK_ASSERT(_rt); \ 383122334Ssam KASSERT((_rt)->rt_refcnt > 0, \ 384186119Sqingli ("bogus refcnt %d", (_rt)->rt_refcnt)); \ 385122334Ssam (_rt)->rt_refcnt--; \ 386150130Sandre} while (0) 387122334Ssam 388122334Ssam#define RTFREE_LOCKED(_rt) do { \ 389183017Sjulian if ((_rt)->rt_refcnt <= 1) \ 390183017Sjulian rtfree(_rt); \ 391183017Sjulian else { \ 392183017Sjulian RT_REMREF(_rt); \ 393183017Sjulian RT_UNLOCK(_rt); \ 394183017Sjulian } \ 395183017Sjulian /* guard against invalid refs */ \ 396183017Sjulian _rt = 0; \ 397183017Sjulian} while (0) 398182801Sjulian 399122334Ssam#define RTFREE(_rt) do { \ 400183017Sjulian RT_LOCK(_rt); \ 401183017Sjulian RTFREE_LOCKED(_rt); \ 402183017Sjulian} while (0) 4031541Srgrimes 404238092Sglebius#define RO_RTFREE(_ro) do { \ 405238092Sglebius if ((_ro)->ro_rt) { \ 406238092Sglebius if ((_ro)->ro_flags & RT_NORTREF) { \ 407238092Sglebius (_ro)->ro_flags &= ~RT_NORTREF; \ 408238092Sglebius (_ro)->ro_rt = NULL; \ 409301217Sgnn (_ro)->ro_lle = NULL; \ 410238092Sglebius } else { \ 411238092Sglebius RT_LOCK((_ro)->ro_rt); \ 412238092Sglebius RTFREE_LOCKED((_ro)->ro_rt); \ 413238092Sglebius } \ 414238092Sglebius } \ 415238092Sglebius} while (0) 416238092Sglebius 417297225Sgnn/* 418297225Sgnn * Validate a cached route based on a supplied cookie. If there is an 419297225Sgnn * out-of-date cache, simply free it. Update the generation number 420297225Sgnn * for the new allocation 421297225Sgnn */ 422297225Sgnn#define RT_VALIDATE(ro, cookiep, fibnum) do { \ 423297225Sgnn rt_gen_t cookie = RT_GEN(fibnum, (ro)->ro_dst.sa_family); \ 424301217Sgnn if (*(cookiep) != cookie) { \ 425301217Sgnn if ((ro)->ro_rt != NULL) { \ 426301217Sgnn RTFREE((ro)->ro_rt); \ 427301217Sgnn (ro)->ro_rt = NULL; \ 428301217Sgnn } \ 429297225Sgnn *(cookiep) = cookie; \ 430297225Sgnn } \ 431297225Sgnn} while (0) 432297225Sgnn 43321666Swollmanstruct ifmultiaddr; 434294706Smelifarostruct rib_head; 43521666Swollman 436136155Ssamvoid rt_ieee80211msg(struct ifnet *, int, void *, size_t); 43792725Salfredvoid rt_ifannouncemsg(struct ifnet *, int); 43892725Salfredvoid rt_ifmsg(struct ifnet *); 43992725Salfredvoid rt_missmsg(int, struct rt_addrinfo *, int, int); 440225837Sbzvoid rt_missmsg_fib(int, struct rt_addrinfo *, int, int, int); 44192725Salfredvoid rt_newaddrmsg(int, struct ifaddr *, int, struct rtentry *); 442225837Sbzvoid rt_newaddrmsg_fib(int, struct ifaddr *, int, struct rtentry *, int); 443260488Smelifaroint rt_addrmsg(int, struct ifaddr *, int); 444260488Smelifaroint rt_routemsg(int, struct ifnet *ifp, int, struct rtentry *, int); 44592725Salfredvoid rt_newmaddrmsg(int, struct ifmultiaddr *); 44692725Salfredint rt_setgate(struct rtentry *, struct sockaddr *, struct sockaddr *); 447201282Sqinglivoid rt_maskedcopy(struct sockaddr *, struct sockaddr *, struct sockaddr *); 448294706Smelifarostruct rib_head *rt_table_init(int); 449294706Smelifarovoid rt_table_destroy(struct rib_head *); 450297234Sbzu_int rt_tables_get_gen(int table, int fam); 451128621Sluigi 452260488Smelifaroint rtsock_addrmsg(int, struct ifaddr *, int); 453260488Smelifaroint rtsock_routemsg(int, struct ifnet *ifp, int, struct rtentry *, int); 454260488Smelifaro 455128621Sluigi/* 456128621Sluigi * Note the following locking behavior: 457128621Sluigi * 458128621Sluigi * rtalloc1() returns a locked rtentry 459128621Sluigi * 460128621Sluigi * rtfree() and RTFREE_LOCKED() require a locked rtentry 461128621Sluigi * 462128621Sluigi * RTFREE() uses an unlocked entry. 463128621Sluigi */ 464128621Sluigi 465178888Sjulianvoid rtfree(struct rtentry *); 466274611Smelifarovoid rt_updatemtu(struct ifnet *); 467178888Sjulian 468286458Smelifarotypedef int rt_walktree_f_t(struct rtentry *, void *); 469294706Smelifarotypedef void rt_setwarg_t(struct rib_head *, uint32_t, int, void *); 470286594Smelifarovoid rt_foreach_fib_walk(int af, rt_setwarg_t *, rt_walktree_f_t *, void *); 471291466Smelifarovoid rt_foreach_fib_walk_del(int af, rt_filter_f_t *filter_f, void *arg); 472301502Sbzvoid rt_flushifroutes_af(struct ifnet *, int); 473286458Smelifarovoid rt_flushifroutes(struct ifnet *ifp); 474286458Smelifaro 475178888Sjulian/* XXX MRT COMPAT VERSIONS THAT SET UNIVERSE to 0 */ 476178888Sjulian/* Thes are used by old code not yet converted to use multiple FIBS */ 477120727Ssamstruct rtentry *rtalloc1(struct sockaddr *, int, u_long); 47892725Salfredint rtinit(struct ifaddr *, int, int); 479174559Skmacy 480178888Sjulian/* XXX MRT NEW VERSIONS THAT USE FIBs 481178888Sjulian * For now the protocol indepedent versions are the same as the AF_INET ones 482178888Sjulian * but this will change.. 483178888Sjulian */ 484178888Sjulianint rt_getifa_fib(struct rt_addrinfo *, u_int fibnum); 485178888Sjulianvoid rtalloc_ign_fib(struct route *ro, u_long ignflags, u_int fibnum); 486178888Sjulianstruct rtentry *rtalloc1_fib(struct sockaddr *, int, u_long, u_int); 487178888Sjulianint rtioctl_fib(u_long, caddr_t, u_int); 488178888Sjulianvoid rtredirect_fib(struct sockaddr *, struct sockaddr *, 489178888Sjulian struct sockaddr *, int, struct sockaddr *, u_int); 490178888Sjulianint rtrequest_fib(int, struct sockaddr *, 491178888Sjulian struct sockaddr *, struct sockaddr *, int, struct rtentry **, u_int); 492178888Sjulianint rtrequest1_fib(int, struct rt_addrinfo *, struct rtentry **, u_int); 493293159Smelifaroint rib_lookup_info(uint32_t, const struct sockaddr *, uint32_t, uint32_t, 494293159Smelifaro struct rt_addrinfo *); 495293159Smelifarovoid rib_free_info(struct rt_addrinfo *info); 496178888Sjulian 4971541Srgrimes#endif 4982168Spaul 4992168Spaul#endif 500