1 /* $OpenBSD: if_bridge.h,v 1.73 2021/11/11 10:03:10 claudio Exp $ */ 2 3 /* 4 * Copyright (c) 1999, 2000 Jason L. Wright (jason@thought.net) 5 * Copyright (c) 2006 Andrew Thompson (thompsa@FreeBSD.org) 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * Effort sponsored in part by the Defense Advanced Research Projects 30 * Agency (DARPA) and Air Force Research Laboratory, Air Force 31 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 32 * 33 */ 34 35 #ifndef _NET_IF_BRIDGE_H_ 36 #define _NET_IF_BRIDGE_H_ 37 38 #include <sys/smr.h> 39 #include <sys/timeout.h> 40 #include <net/pfvar.h> 41 42 /* 43 * Bridge control request: add/delete member interfaces. 44 */ 45 struct ifbreq { 46 char ifbr_name[IFNAMSIZ]; /* bridge ifs name */ 47 char ifbr_ifsname[IFNAMSIZ]; /* member ifs name */ 48 u_int32_t ifbr_ifsflags; /* member ifs flags */ 49 u_int32_t ifbr_portno; /* member port number */ 50 u_int32_t ifbr_protected; /* protected domains */ 51 52 u_int8_t ifbr_state; /* member stp state */ 53 u_int8_t ifbr_priority; /* member stp priority */ 54 u_int32_t ifbr_path_cost; /* member stp path cost */ 55 u_int32_t ifbr_stpflags; /* member stp flags */ 56 u_int8_t ifbr_proto; /* member stp protocol */ 57 u_int8_t ifbr_role; /* member stp role */ 58 u_int32_t ifbr_fwd_trans; /* member stp fwd transitions */ 59 u_int64_t ifbr_desg_bridge; /* member stp designated bridge */ 60 u_int32_t ifbr_desg_port; /* member stp designated port */ 61 u_int64_t ifbr_root_bridge; /* member stp root bridge */ 62 u_int32_t ifbr_root_cost; /* member stp root cost */ 63 u_int32_t ifbr_root_port; /* member stp root port */ 64 }; 65 66 /* SIOCBRDGIFFLGS, SIOCBRDGIFFLGS */ 67 #define IFBIF_LEARNING 0x0001 /* ifs can learn */ 68 #define IFBIF_DISCOVER 0x0002 /* ifs sends packets w/unknown dest */ 69 #define IFBIF_BLOCKNONIP 0x0004 /* ifs blocks non-IP/ARP in/out */ 70 #define IFBIF_STP 0x0008 /* ifs participates in spanning tree */ 71 #define IFBIF_BSTP_EDGE 0x0010 /* member stp edge port */ 72 #define IFBIF_BSTP_AUTOEDGE 0x0020 /* member stp autoedge enabled */ 73 #define IFBIF_BSTP_PTP 0x0040 /* member stp ptp */ 74 #define IFBIF_BSTP_AUTOPTP 0x0080 /* member stp autoptp enabled */ 75 #define IFBIF_SPAN 0x0100 /* ifs is a span port (ro) */ 76 #define IFBIF_LOCAL 0x1000 /* local port in switch(4) */ 77 #define IFBIF_RO_MASK 0x0f00 /* read only bits */ 78 79 /* SIOCBRDGFLUSH */ 80 #define IFBF_FLUSHDYN 0x0 /* flush dynamic addresses only */ 81 #define IFBF_FLUSHALL 0x1 /* flush all addresses from cache */ 82 83 /* port states */ 84 #define BSTP_IFSTATE_DISABLED 0 85 #define BSTP_IFSTATE_LISTENING 1 86 #define BSTP_IFSTATE_LEARNING 2 87 #define BSTP_IFSTATE_FORWARDING 3 88 #define BSTP_IFSTATE_BLOCKING 4 89 #define BSTP_IFSTATE_DISCARDING 5 90 91 #define BSTP_TCSTATE_ACTIVE 1 92 #define BSTP_TCSTATE_DETECTED 2 93 #define BSTP_TCSTATE_INACTIVE 3 94 #define BSTP_TCSTATE_LEARNING 4 95 #define BSTP_TCSTATE_PROPAG 5 96 #define BSTP_TCSTATE_ACK 6 97 #define BSTP_TCSTATE_TC 7 98 #define BSTP_TCSTATE_TCN 8 99 100 #define BSTP_ROLE_DISABLED 0 101 #define BSTP_ROLE_ROOT 1 102 #define BSTP_ROLE_DESIGNATED 2 103 #define BSTP_ROLE_ALTERNATE 3 104 #define BSTP_ROLE_BACKUP 4 105 106 /* 107 * Interface list structure 108 */ 109 struct ifbifconf { 110 char ifbic_name[IFNAMSIZ]; /* bridge ifs name */ 111 u_int32_t ifbic_len; /* buffer size */ 112 union { 113 caddr_t ifbicu_buf; 114 struct ifbreq *ifbicu_req; 115 } ifbic_ifbicu; 116 #define ifbic_buf ifbic_ifbicu.ifbicu_buf 117 #define ifbic_req ifbic_ifbicu.ifbicu_req 118 }; 119 120 /* 121 * Bridge address request 122 */ 123 struct ifbareq { 124 char ifba_name[IFNAMSIZ]; /* bridge name */ 125 char ifba_ifsname[IFNAMSIZ]; /* destination ifs */ 126 u_int8_t ifba_age; /* address age */ 127 u_int8_t ifba_flags; /* address flags */ 128 struct ether_addr ifba_dst; /* destination addr */ 129 struct sockaddr_storage ifba_dstsa; /* tunnel endpoint */ 130 }; 131 132 #define IFBAF_TYPEMASK 0x03 /* address type mask */ 133 #define IFBAF_DYNAMIC 0x00 /* dynamically learned */ 134 #define IFBAF_STATIC 0x01 /* static address */ 135 136 struct ifbaconf { 137 char ifbac_name[IFNAMSIZ]; /* bridge ifs name */ 138 u_int32_t ifbac_len; /* buffer size */ 139 union { 140 caddr_t ifbacu_buf; /* buffer */ 141 struct ifbareq *ifbacu_req; /* request pointer */ 142 } ifbac_ifbacu; 143 #define ifbac_buf ifbac_ifbacu.ifbacu_buf 144 #define ifbac_req ifbac_ifbacu.ifbacu_req 145 }; 146 147 struct ifbrparam { 148 char ifbrp_name[IFNAMSIZ]; 149 union { 150 u_int32_t ifbrpu_csize; /* cache size */ 151 int ifbrpu_ctime; /* cache time (sec) */ 152 u_int16_t ifbrpu_prio; /* bridge priority */ 153 u_int8_t ifbrpu_hellotime; /* hello time (sec) */ 154 u_int8_t ifbrpu_fwddelay; /* fwd delay (sec) */ 155 u_int8_t ifbrpu_maxage; /* max age (sec) */ 156 u_int8_t ifbrpu_proto; /* bridge protocol */ 157 u_int8_t ifbrpu_txhc; /* bpdu tx holdcount */ 158 } ifbrp_ifbrpu; 159 }; 160 #define ifbrp_csize ifbrp_ifbrpu.ifbrpu_csize 161 #define ifbrp_ctime ifbrp_ifbrpu.ifbrpu_ctime 162 #define ifbrp_prio ifbrp_ifbrpu.ifbrpu_prio 163 #define ifbrp_proto ifbrp_ifbrpu.ifbrpu_proto 164 #define ifbrp_txhc ifbrp_ifbrpu.ifbrpu_txhc 165 #define ifbrp_hellotime ifbrp_ifbrpu.ifbrpu_hellotime 166 #define ifbrp_fwddelay ifbrp_ifbrpu.ifbrpu_fwddelay 167 #define ifbrp_maxage ifbrp_ifbrpu.ifbrpu_maxage 168 169 /* Protocol versions */ 170 #define BSTP_PROTO_ID 0x00 171 #define BSTP_PROTO_STP 0x00 172 #define BSTP_PROTO_RSTP 0x02 173 #define BSTP_PROTO_MAX BSTP_PROTO_RSTP 174 175 /* 176 * Bridge current operational parameters structure. 177 */ 178 struct ifbropreq { 179 char ifbop_name[IFNAMSIZ]; 180 u_int8_t ifbop_holdcount; 181 u_int8_t ifbop_maxage; 182 u_int8_t ifbop_hellotime; 183 u_int8_t ifbop_fwddelay; 184 u_int8_t ifbop_protocol; 185 u_int16_t ifbop_priority; 186 u_int64_t ifbop_root_bridge; 187 u_int16_t ifbop_root_port; 188 u_int32_t ifbop_root_path_cost; 189 u_int64_t ifbop_desg_bridge; 190 struct timeval ifbop_last_tc_time; 191 }; 192 193 /* 194 * Bridge mac rules 195 */ 196 struct ifbrarpf { 197 u_int16_t brla_flags; 198 u_int16_t brla_op; 199 struct ether_addr brla_sha; 200 struct in_addr brla_spa; 201 struct ether_addr brla_tha; 202 struct in_addr brla_tpa; 203 }; 204 #define BRLA_ARP 0x01 205 #define BRLA_RARP 0x02 206 #define BRLA_SHA 0x10 207 #define BRLA_SPA 0x20 208 #define BRLA_THA 0x40 209 #define BRLA_TPA 0x80 210 211 struct ifbrlreq { 212 char ifbr_name[IFNAMSIZ]; /* bridge ifs name */ 213 char ifbr_ifsname[IFNAMSIZ]; /* member ifs name */ 214 u_int8_t ifbr_action; /* disposition */ 215 u_int8_t ifbr_flags; /* flags */ 216 struct ether_addr ifbr_src; /* source mac */ 217 struct ether_addr ifbr_dst; /* destination mac */ 218 char ifbr_tagname[PF_TAG_NAME_SIZE]; /* pf tagname */ 219 struct ifbrarpf ifbr_arpf; /* arp filter */ 220 }; 221 #define BRL_ACTION_BLOCK 0x01 /* block frame */ 222 #define BRL_ACTION_PASS 0x02 /* pass frame */ 223 #define BRL_FLAG_IN 0x08 /* input rule */ 224 #define BRL_FLAG_OUT 0x04 /* output rule */ 225 #define BRL_FLAG_SRCVALID 0x02 /* src valid */ 226 #define BRL_FLAG_DSTVALID 0x01 /* dst valid */ 227 228 struct ifbrlconf { 229 char ifbrl_name[IFNAMSIZ]; /* bridge ifs name */ 230 char ifbrl_ifsname[IFNAMSIZ];/* member ifs name */ 231 u_int32_t ifbrl_len; /* buffer size */ 232 union { 233 caddr_t ifbrlu_buf; 234 struct ifbrlreq *ifbrlu_req; 235 } ifbrl_ifbrlu; 236 #define ifbrl_buf ifbrl_ifbrlu.ifbrlu_buf 237 #define ifbrl_req ifbrl_ifbrlu.ifbrlu_req 238 }; 239 240 #ifdef _KERNEL 241 242 #include <sys/mutex.h> 243 244 /* STP port flags */ 245 #define BSTP_PORT_CANMIGRATE 0x0001 246 #define BSTP_PORT_NEWINFO 0x0002 247 #define BSTP_PORT_DISPUTED 0x0004 248 #define BSTP_PORT_ADMCOST 0x0008 249 #define BSTP_PORT_AUTOEDGE 0x0010 250 #define BSTP_PORT_AUTOPTP 0x0020 251 252 /* BPDU priority */ 253 #define BSTP_PDU_SUPERIOR 1 254 #define BSTP_PDU_REPEATED 2 255 #define BSTP_PDU_INFERIOR 3 256 #define BSTP_PDU_INFERIORALT 4 257 #define BSTP_PDU_OTHER 5 258 259 /* BPDU flags */ 260 #define BSTP_PDU_PRMASK 0x0c /* Port Role */ 261 #define BSTP_PDU_PRSHIFT 2 /* Port Role offset */ 262 #define BSTP_PDU_F_UNKN 0x00 /* Unknown port (00) */ 263 #define BSTP_PDU_F_ALT 0x01 /* Alt/Backup port (01) */ 264 #define BSTP_PDU_F_ROOT 0x02 /* Root port (10) */ 265 #define BSTP_PDU_F_DESG 0x03 /* Designated port (11) */ 266 267 #define BSTP_PDU_STPMASK 0x81 /* strip unused STP flags */ 268 #define BSTP_PDU_RSTPMASK 0x7f /* strip unused RSTP flags */ 269 #define BSTP_PDU_F_TC 0x01 /* Topology change */ 270 #define BSTP_PDU_F_P 0x02 /* Proposal flag */ 271 #define BSTP_PDU_F_L 0x10 /* Learning flag */ 272 #define BSTP_PDU_F_F 0x20 /* Forwarding flag */ 273 #define BSTP_PDU_F_A 0x40 /* Agreement flag */ 274 #define BSTP_PDU_F_TCA 0x80 /* Topology change ack */ 275 276 /* 277 * Bridge filtering rules 278 */ 279 SIMPLEQ_HEAD(brl_head, brl_node); 280 281 struct brl_node { 282 SIMPLEQ_ENTRY(brl_node) brl_next; /* next rule */ 283 struct ether_addr brl_src; /* source mac address */ 284 struct ether_addr brl_dst; /* destination mac address */ 285 u_int16_t brl_tag; /* pf tag ID */ 286 u_int8_t brl_action; /* what to do with match */ 287 u_int8_t brl_flags; /* comparison flags */ 288 struct ifbrarpf brl_arpf; /* arp filter */ 289 }; 290 291 struct bstp_timer { 292 u_int16_t active; 293 u_int16_t value; 294 u_int32_t latched; 295 }; 296 297 struct bstp_pri_vector { 298 u_int64_t pv_root_id; 299 u_int32_t pv_cost; 300 u_int64_t pv_dbridge_id; 301 u_int16_t pv_dport_id; 302 u_int16_t pv_port_id; 303 }; 304 305 struct bstp_config_unit { 306 struct bstp_pri_vector cu_pv; 307 u_int16_t cu_message_age; 308 u_int16_t cu_max_age; 309 u_int16_t cu_forward_delay; 310 u_int16_t cu_hello_time; 311 u_int8_t cu_message_type; 312 u_int8_t cu_topology_change_ack; 313 u_int8_t cu_topology_change; 314 u_int8_t cu_proposal; 315 u_int8_t cu_agree; 316 u_int8_t cu_learning; 317 u_int8_t cu_forwarding; 318 u_int8_t cu_role; 319 }; 320 321 struct bstp_tcn_unit { 322 u_int8_t tu_message_type; 323 }; 324 325 struct bstp_port { 326 LIST_ENTRY(bstp_port) bp_next; 327 unsigned int bp_ifindex; /* parent interface index */ 328 struct bstp_state *bp_bs; 329 struct task bp_ltask; /* if linkstate hook */ 330 u_int8_t bp_active; 331 u_int8_t bp_protover; 332 u_int32_t bp_flags; 333 u_int32_t bp_path_cost; 334 u_int16_t bp_port_msg_age; 335 u_int16_t bp_port_max_age; 336 u_int16_t bp_port_fdelay; 337 u_int16_t bp_port_htime; 338 u_int16_t bp_desg_msg_age; 339 u_int16_t bp_desg_max_age; 340 u_int16_t bp_desg_fdelay; 341 u_int16_t bp_desg_htime; 342 struct bstp_timer bp_edge_delay_timer; 343 struct bstp_timer bp_forward_delay_timer; 344 struct bstp_timer bp_hello_timer; 345 struct bstp_timer bp_message_age_timer; 346 struct bstp_timer bp_migrate_delay_timer; 347 struct bstp_timer bp_recent_backup_timer; 348 struct bstp_timer bp_recent_root_timer; 349 struct bstp_timer bp_tc_timer; 350 struct bstp_config_unit bp_msg_cu; 351 struct bstp_pri_vector bp_desg_pv; 352 struct bstp_pri_vector bp_port_pv; 353 u_int16_t bp_port_id; 354 u_int8_t bp_state; 355 u_int8_t bp_tcstate; 356 u_int8_t bp_role; 357 u_int8_t bp_infois; 358 u_int8_t bp_tc_ack; 359 u_int8_t bp_tc_prop; 360 u_int8_t bp_fdbflush; 361 u_int8_t bp_priority; 362 u_int8_t bp_ptp_link; 363 u_int8_t bp_agree; 364 u_int8_t bp_agreed; 365 u_int8_t bp_sync; 366 u_int8_t bp_synced; 367 u_int8_t bp_proposing; 368 u_int8_t bp_proposed; 369 u_int8_t bp_operedge; 370 u_int8_t bp_reroot; 371 u_int8_t bp_rcvdtc; 372 u_int8_t bp_rcvdtca; 373 u_int8_t bp_rcvdtcn; 374 u_int32_t bp_forward_transitions; 375 u_int8_t bp_txcount; 376 }; 377 378 /* 379 * Software state for each bridge STP. 380 */ 381 struct bstp_state { 382 unsigned int bs_ifindex; 383 struct bstp_pri_vector bs_bridge_pv; 384 struct bstp_pri_vector bs_root_pv; 385 struct bstp_port *bs_root_port; 386 u_int8_t bs_protover; 387 u_int16_t bs_migration_delay; 388 u_int16_t bs_edge_delay; 389 u_int16_t bs_bridge_max_age; 390 u_int16_t bs_bridge_fdelay; 391 u_int16_t bs_bridge_htime; 392 u_int16_t bs_root_msg_age; 393 u_int16_t bs_root_max_age; 394 u_int16_t bs_root_fdelay; 395 u_int16_t bs_root_htime; 396 u_int16_t bs_hold_time; 397 u_int16_t bs_bridge_priority; 398 u_int8_t bs_txholdcount; 399 u_int8_t bs_allsynced; 400 struct timeout bs_bstptimeout; /* stp timeout */ 401 struct bstp_timer bs_link_timer; 402 struct timeval bs_last_tc_time; 403 LIST_HEAD(, bstp_port) bs_bplist; 404 }; 405 406 /* 407 * Bridge interface list 408 * 409 * Locks used to protect struct members in this file: 410 * I immutable after creation 411 * k kernel lock 412 */ 413 struct bridge_iflist { 414 SMR_SLIST_ENTRY(bridge_iflist) bif_next; /* [k] next in list */ 415 struct bridge_softc *bridge_sc; /* [I] sc backpointer */ 416 struct bstp_port *bif_stp; /* [I] STP port state */ 417 struct brl_head bif_brlin; /* [k] input rules */ 418 struct brl_head bif_brlout; /* [k] output rules */ 419 struct ifnet *ifp; /* [I] net interface */ 420 u_int32_t bif_flags; /* member flags */ 421 u_int32_t bif_protected; /* protected domains */ 422 struct task bif_dtask; 423 }; 424 #define bif_state bif_stp->bp_state 425 426 /* 427 * XXX ip_ipsp.h's sockaddr_union should be converted to sockaddr * 428 * passing with correct sa_len, then a good approach for cleaning this 429 * will become more clear. 430 */ 431 union brsockaddr_union { 432 struct sockaddr sa; 433 struct sockaddr_in sin; 434 struct sockaddr_in6 sin6; 435 }; 436 437 /* 438 * Bridge tunnel tagging 439 */ 440 struct bridge_tunneltag { 441 union brsockaddr_union brtag_peer; 442 union brsockaddr_union brtag_local; 443 u_int32_t brtag_id; 444 }; 445 446 /* 447 * Bridge route node 448 */ 449 struct bridge_rtnode { 450 LIST_ENTRY(bridge_rtnode) brt_next; /* next in list */ 451 unsigned int brt_ifidx; /* destination ifs */ 452 u_int8_t brt_flags; /* address flags */ 453 u_int8_t brt_age; /* age counter */ 454 struct ether_addr brt_addr; /* dst addr */ 455 struct bridge_tunneltag brt_tunnel; /* tunnel endpoint */ 456 }; 457 #define brt_family brt_tunnel.brtag_peer.sa.sa_family 458 459 #ifndef BRIDGE_RTABLE_SIZE 460 #define BRIDGE_RTABLE_SIZE 1024 461 #endif 462 #define BRIDGE_RTABLE_MASK (BRIDGE_RTABLE_SIZE - 1) 463 464 /* 465 * Software state for each bridge 466 * 467 * Locks used to protect struct members in this file: 468 * I immutable after creation 469 * m per-softc mutex 470 * k kernel lock 471 */ 472 struct bridge_softc { 473 struct ifnet sc_if; /* the interface */ 474 uint32_t sc_brtmax; /* [m] max # addresses */ 475 uint32_t sc_brtcnt; /* [m] current # addrs */ 476 int sc_brttimeout; /* timeout ticks */ 477 uint64_t sc_hashkey[2]; /* [I] siphash key */ 478 struct timeout sc_brtimeout; /* timeout state */ 479 struct bstp_state *sc_stp; /* stp state */ 480 SMR_SLIST_HEAD(, bridge_iflist) sc_iflist; /* [k] interface list */ 481 SMR_SLIST_HEAD(, bridge_iflist) sc_spanlist; /* [k] span ports */ 482 struct mutex sc_mtx; /* mutex */ 483 LIST_HEAD(, bridge_rtnode) sc_rts[BRIDGE_RTABLE_SIZE]; /* [m] hash table */ 484 }; 485 486 extern const u_int8_t bstp_etheraddr[]; 487 struct llc; 488 489 int bridge_enqueue(struct ifnet *, struct mbuf *); 490 void bridge_update(struct ifnet *, struct ether_addr *, int); 491 void bridge_rtdelete(struct bridge_softc *, struct ifnet *, int); 492 void bridge_rtagenode(struct ifnet *, int); 493 struct bridge_tunneltag *bridge_tunnel(struct mbuf *); 494 struct bridge_tunneltag *bridge_tunneltag(struct mbuf *); 495 void bridge_tunneluntag(struct mbuf *); 496 void bridge_copyaddr(struct sockaddr *, struct sockaddr *); 497 void bridge_copytag(struct bridge_tunneltag *, struct bridge_tunneltag *); 498 499 struct bstp_state *bstp_create(void); 500 void bstp_enable(struct bstp_state *bs, unsigned int); 501 void bstp_disable(struct bstp_state *bs); 502 void bstp_destroy(struct bstp_state *); 503 void bstp_initialization(struct bstp_state *); 504 void bstp_stop(struct bstp_state *); 505 int bstp_ioctl(struct ifnet *, u_long, caddr_t); 506 struct bstp_port *bstp_add(struct bstp_state *, struct ifnet *); 507 void bstp_delete(struct bstp_port *); 508 struct mbuf *bstp_input(struct bstp_state *, struct bstp_port *, 509 struct ether_header *, struct mbuf *); 510 void bstp_ifstate(void *); 511 u_int8_t bstp_getstate(struct bstp_state *, struct bstp_port *); 512 void bstp_ifsflags(struct bstp_port *, u_int); 513 514 int bridgectl_ioctl(struct ifnet *, u_long, caddr_t); 515 int bridge_rtupdate(struct bridge_softc *, 516 struct ether_addr *, struct ifnet *, int, u_int8_t, struct mbuf *); 517 unsigned int bridge_rtlookup(struct ifnet *, 518 struct ether_addr *, struct mbuf *); 519 void bridge_rtflush(struct bridge_softc *, int); 520 void bridge_rtage(void *); 521 522 u_int8_t bridge_filterrule(struct brl_head *, struct ether_header *, 523 struct mbuf *); 524 void bridge_flushrule(struct bridge_iflist *); 525 526 void bridge_fragment(struct ifnet *, struct ifnet *, struct ether_header *, 527 struct mbuf *); 528 struct bridge_iflist *bridge_getbif(struct ifnet *); 529 int bridge_findbif(struct bridge_softc *, const char *, 530 struct bridge_iflist **); 531 532 #endif /* _KERNEL */ 533 #endif /* _NET_IF_BRIDGE_H_ */ 534