1 /* $OpenBSD: if_bridge.h,v 1.58 2018/12/07 16:19:40 mpi 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/timeout.h> 39 #include <net/pfvar.h> 40 41 /* 42 * Bridge control request: add/delete member interfaces. 43 */ 44 struct ifbreq { 45 char ifbr_name[IFNAMSIZ]; /* bridge ifs name */ 46 char ifbr_ifsname[IFNAMSIZ]; /* member ifs name */ 47 u_int32_t ifbr_ifsflags; /* member ifs flags */ 48 u_int32_t ifbr_portno; /* member port number */ 49 u_int32_t ifbr_protected; /* protected domains */ 50 51 u_int8_t ifbr_state; /* member stp state */ 52 u_int8_t ifbr_priority; /* member stp priority */ 53 u_int32_t ifbr_path_cost; /* member stp path cost */ 54 u_int32_t ifbr_stpflags; /* member stp flags */ 55 u_int8_t ifbr_proto; /* member stp protocol */ 56 u_int8_t ifbr_role; /* member stp role */ 57 u_int32_t ifbr_fwd_trans; /* member stp fwd transitions */ 58 u_int64_t ifbr_desg_bridge; /* member stp designated bridge */ 59 u_int32_t ifbr_desg_port; /* member stp designated port */ 60 u_int64_t ifbr_root_bridge; /* member stp root bridge */ 61 u_int32_t ifbr_root_cost; /* member stp root cost */ 62 u_int32_t ifbr_root_port; /* member stp root port */ 63 }; 64 65 /* SIOCBRDGIFFLGS, SIOCBRDGIFFLGS */ 66 #define IFBIF_LEARNING 0x0001 /* ifs can learn */ 67 #define IFBIF_DISCOVER 0x0002 /* ifs sends packets w/unknown dest */ 68 #define IFBIF_BLOCKNONIP 0x0004 /* ifs blocks non-IP/ARP in/out */ 69 #define IFBIF_STP 0x0008 /* ifs participates in spanning tree */ 70 #define IFBIF_BSTP_EDGE 0x0010 /* member stp edge port */ 71 #define IFBIF_BSTP_AUTOEDGE 0x0020 /* member stp autoedge enabled */ 72 #define IFBIF_BSTP_PTP 0x0040 /* member stp ptp */ 73 #define IFBIF_BSTP_AUTOPTP 0x0080 /* member stp autoptp enabled */ 74 #define IFBIF_SPAN 0x0100 /* ifs is a span port (ro) */ 75 #define IFBIF_LOCAL 0x1000 /* local port in switch(4) */ 76 #define IFBIF_RO_MASK 0x0f00 /* read only bits */ 77 78 /* SIOCBRDGFLUSH */ 79 #define IFBF_FLUSHDYN 0x0 /* flush dynamic addresses only */ 80 #define IFBF_FLUSHALL 0x1 /* flush all addresses from cache */ 81 82 /* port states */ 83 #define BSTP_IFSTATE_DISABLED 0 84 #define BSTP_IFSTATE_LISTENING 1 85 #define BSTP_IFSTATE_LEARNING 2 86 #define BSTP_IFSTATE_FORWARDING 3 87 #define BSTP_IFSTATE_BLOCKING 4 88 #define BSTP_IFSTATE_DISCARDING 5 89 90 #define BSTP_TCSTATE_ACTIVE 1 91 #define BSTP_TCSTATE_DETECTED 2 92 #define BSTP_TCSTATE_INACTIVE 3 93 #define BSTP_TCSTATE_LEARNING 4 94 #define BSTP_TCSTATE_PROPAG 5 95 #define BSTP_TCSTATE_ACK 6 96 #define BSTP_TCSTATE_TC 7 97 #define BSTP_TCSTATE_TCN 8 98 99 #define BSTP_ROLE_DISABLED 0 100 #define BSTP_ROLE_ROOT 1 101 #define BSTP_ROLE_DESIGNATED 2 102 #define BSTP_ROLE_ALTERNATE 3 103 #define BSTP_ROLE_BACKUP 4 104 105 /* 106 * Interface list structure 107 */ 108 struct ifbifconf { 109 char ifbic_name[IFNAMSIZ]; /* bridge ifs name */ 110 u_int32_t ifbic_len; /* buffer size */ 111 union { 112 caddr_t ifbicu_buf; 113 struct ifbreq *ifbicu_req; 114 } ifbic_ifbicu; 115 #define ifbic_buf ifbic_ifbicu.ifbicu_buf 116 #define ifbic_req ifbic_ifbicu.ifbicu_req 117 }; 118 119 /* 120 * Bridge address request 121 */ 122 struct ifbareq { 123 char ifba_name[IFNAMSIZ]; /* bridge name */ 124 char ifba_ifsname[IFNAMSIZ]; /* destination ifs */ 125 u_int8_t ifba_age; /* address age */ 126 u_int8_t ifba_flags; /* address flags */ 127 struct ether_addr ifba_dst; /* destination addr */ 128 struct sockaddr_storage ifba_dstsa; /* tunnel endpoint */ 129 }; 130 131 #define IFBAF_TYPEMASK 0x03 /* address type mask */ 132 #define IFBAF_DYNAMIC 0x00 /* dynamically learned */ 133 #define IFBAF_STATIC 0x01 /* static address */ 134 135 struct ifbaconf { 136 char ifbac_name[IFNAMSIZ]; /* bridge ifs name */ 137 u_int32_t ifbac_len; /* buffer size */ 138 union { 139 caddr_t ifbacu_buf; /* buffer */ 140 struct ifbareq *ifbacu_req; /* request pointer */ 141 } ifbac_ifbacu; 142 #define ifbac_buf ifbac_ifbacu.ifbacu_buf 143 #define ifbac_req ifbac_ifbacu.ifbacu_req 144 }; 145 146 struct ifbrparam { 147 char ifbrp_name[IFNAMSIZ]; 148 union { 149 u_int32_t ifbrpu_csize; /* cache size */ 150 int ifbrpu_ctime; /* cache time (sec) */ 151 u_int16_t ifbrpu_prio; /* bridge priority */ 152 u_int8_t ifbrpu_hellotime; /* hello time (sec) */ 153 u_int8_t ifbrpu_fwddelay; /* fwd delay (sec) */ 154 u_int8_t ifbrpu_maxage; /* max age (sec) */ 155 u_int8_t ifbrpu_proto; /* bridge protocol */ 156 u_int8_t ifbrpu_txhc; /* bpdu tx holdcount */ 157 u_int64_t ifbrpu_datapath; /* datapath-id */ 158 u_int32_t ifbrpu_maxgroup; /* group size */ 159 } ifbrp_ifbrpu; 160 }; 161 #define ifbrp_csize ifbrp_ifbrpu.ifbrpu_csize 162 #define ifbrp_ctime ifbrp_ifbrpu.ifbrpu_ctime 163 #define ifbrp_prio ifbrp_ifbrpu.ifbrpu_prio 164 #define ifbrp_proto ifbrp_ifbrpu.ifbrpu_proto 165 #define ifbrp_txhc ifbrp_ifbrpu.ifbrpu_txhc 166 #define ifbrp_hellotime ifbrp_ifbrpu.ifbrpu_hellotime 167 #define ifbrp_fwddelay ifbrp_ifbrpu.ifbrpu_fwddelay 168 #define ifbrp_maxage ifbrp_ifbrpu.ifbrpu_maxage 169 #define ifbrp_datapath ifbrp_ifbrpu.ifbrpu_datapath 170 #define ifbrp_maxflow ifbrp_ifbrpu.ifbrpu_csize 171 #define ifbrp_maxgroup ifbrp_ifbrpu.ifbrpu_maxgroup 172 173 /* Protocol versions */ 174 #define BSTP_PROTO_ID 0x00 175 #define BSTP_PROTO_STP 0x00 176 #define BSTP_PROTO_RSTP 0x02 177 #define BSTP_PROTO_MAX BSTP_PROTO_RSTP 178 179 /* 180 * Bridge current operational parameters structure. 181 */ 182 struct ifbropreq { 183 char ifbop_name[IFNAMSIZ]; 184 u_int8_t ifbop_holdcount; 185 u_int8_t ifbop_maxage; 186 u_int8_t ifbop_hellotime; 187 u_int8_t ifbop_fwddelay; 188 u_int8_t ifbop_protocol; 189 u_int16_t ifbop_priority; 190 u_int64_t ifbop_root_bridge; 191 u_int16_t ifbop_root_port; 192 u_int32_t ifbop_root_path_cost; 193 u_int64_t ifbop_desg_bridge; 194 struct timeval ifbop_last_tc_time; 195 }; 196 197 /* 198 * Bridge mac rules 199 */ 200 struct ifbrarpf { 201 u_int16_t brla_flags; 202 u_int16_t brla_op; 203 struct ether_addr brla_sha; 204 struct in_addr brla_spa; 205 struct ether_addr brla_tha; 206 struct in_addr brla_tpa; 207 }; 208 #define BRLA_ARP 0x01 209 #define BRLA_RARP 0x02 210 #define BRLA_SHA 0x10 211 #define BRLA_SPA 0x20 212 #define BRLA_THA 0x40 213 #define BRLA_TPA 0x80 214 215 struct ifbrlreq { 216 char ifbr_name[IFNAMSIZ]; /* bridge ifs name */ 217 char ifbr_ifsname[IFNAMSIZ]; /* member ifs name */ 218 u_int8_t ifbr_action; /* disposition */ 219 u_int8_t ifbr_flags; /* flags */ 220 struct ether_addr ifbr_src; /* source mac */ 221 struct ether_addr ifbr_dst; /* destination mac */ 222 char ifbr_tagname[PF_TAG_NAME_SIZE]; /* pf tagname */ 223 struct ifbrarpf ifbr_arpf; /* arp filter */ 224 }; 225 #define BRL_ACTION_BLOCK 0x01 /* block frame */ 226 #define BRL_ACTION_PASS 0x02 /* pass frame */ 227 #define BRL_FLAG_IN 0x08 /* input rule */ 228 #define BRL_FLAG_OUT 0x04 /* output rule */ 229 #define BRL_FLAG_SRCVALID 0x02 /* src valid */ 230 #define BRL_FLAG_DSTVALID 0x01 /* dst valid */ 231 232 struct ifbrlconf { 233 char ifbrl_name[IFNAMSIZ]; /* bridge ifs name */ 234 char ifbrl_ifsname[IFNAMSIZ];/* member ifs name */ 235 u_int32_t ifbrl_len; /* buffer size */ 236 union { 237 caddr_t ifbrlu_buf; 238 struct ifbrlreq *ifbrlu_req; 239 } ifbrl_ifbrlu; 240 #define ifbrl_buf ifbrl_ifbrlu.ifbrlu_buf 241 #define ifbrl_req ifbrl_ifbrlu.ifbrlu_req 242 }; 243 244 #ifdef _KERNEL 245 /* STP port flags */ 246 #define BSTP_PORT_CANMIGRATE 0x0001 247 #define BSTP_PORT_NEWINFO 0x0002 248 #define BSTP_PORT_DISPUTED 0x0004 249 #define BSTP_PORT_ADMCOST 0x0008 250 #define BSTP_PORT_AUTOEDGE 0x0010 251 #define BSTP_PORT_AUTOPTP 0x0020 252 253 /* BPDU priority */ 254 #define BSTP_PDU_SUPERIOR 1 255 #define BSTP_PDU_REPEATED 2 256 #define BSTP_PDU_INFERIOR 3 257 #define BSTP_PDU_INFERIORALT 4 258 #define BSTP_PDU_OTHER 5 259 260 /* BPDU flags */ 261 #define BSTP_PDU_PRMASK 0x0c /* Port Role */ 262 #define BSTP_PDU_PRSHIFT 2 /* Port Role offset */ 263 #define BSTP_PDU_F_UNKN 0x00 /* Unknown port (00) */ 264 #define BSTP_PDU_F_ALT 0x01 /* Alt/Backup port (01) */ 265 #define BSTP_PDU_F_ROOT 0x02 /* Root port (10) */ 266 #define BSTP_PDU_F_DESG 0x03 /* Designated port (11) */ 267 268 #define BSTP_PDU_STPMASK 0x81 /* strip unused STP flags */ 269 #define BSTP_PDU_RSTPMASK 0x7f /* strip unused RSTP flags */ 270 #define BSTP_PDU_F_TC 0x01 /* Topology change */ 271 #define BSTP_PDU_F_P 0x02 /* Proposal flag */ 272 #define BSTP_PDU_F_L 0x10 /* Learning flag */ 273 #define BSTP_PDU_F_F 0x20 /* Forwarding flag */ 274 #define BSTP_PDU_F_A 0x40 /* Agreement flag */ 275 #define BSTP_PDU_F_TCA 0x80 /* Topology change ack */ 276 277 /* 278 * Bridge filtering rules 279 */ 280 SIMPLEQ_HEAD(brl_head, brl_node); 281 282 struct brl_node { 283 SIMPLEQ_ENTRY(brl_node) brl_next; /* next rule */ 284 struct ether_addr brl_src; /* source mac address */ 285 struct ether_addr brl_dst; /* destination mac address */ 286 u_int16_t brl_tag; /* pf tag ID */ 287 u_int8_t brl_action; /* what to do with match */ 288 u_int8_t brl_flags; /* comparision flags */ 289 struct ifbrarpf brl_arpf; /* arp filter */ 290 }; 291 292 struct bstp_timer { 293 u_int16_t active; 294 u_int16_t value; 295 u_int32_t latched; 296 }; 297 298 struct bstp_pri_vector { 299 u_int64_t pv_root_id; 300 u_int32_t pv_cost; 301 u_int64_t pv_dbridge_id; 302 u_int16_t pv_dport_id; 303 u_int16_t pv_port_id; 304 }; 305 306 struct bstp_config_unit { 307 struct bstp_pri_vector cu_pv; 308 u_int16_t cu_message_age; 309 u_int16_t cu_max_age; 310 u_int16_t cu_forward_delay; 311 u_int16_t cu_hello_time; 312 u_int8_t cu_message_type; 313 u_int8_t cu_topology_change_ack; 314 u_int8_t cu_topology_change; 315 u_int8_t cu_proposal; 316 u_int8_t cu_agree; 317 u_int8_t cu_learning; 318 u_int8_t cu_forwarding; 319 u_int8_t cu_role; 320 }; 321 322 struct bstp_tcn_unit { 323 u_int8_t tu_message_type; 324 }; 325 326 struct bstp_port { 327 LIST_ENTRY(bstp_port) bp_next; 328 struct ifnet *bp_ifp; /* parent if */ 329 struct bstp_state *bp_bs; 330 void *bp_lhcookie; /* if linkstate hook */ 331 u_int8_t bp_active; 332 u_int8_t bp_protover; 333 u_int32_t bp_flags; 334 u_int32_t bp_path_cost; 335 u_int16_t bp_port_msg_age; 336 u_int16_t bp_port_max_age; 337 u_int16_t bp_port_fdelay; 338 u_int16_t bp_port_htime; 339 u_int16_t bp_desg_msg_age; 340 u_int16_t bp_desg_max_age; 341 u_int16_t bp_desg_fdelay; 342 u_int16_t bp_desg_htime; 343 struct bstp_timer bp_edge_delay_timer; 344 struct bstp_timer bp_forward_delay_timer; 345 struct bstp_timer bp_hello_timer; 346 struct bstp_timer bp_message_age_timer; 347 struct bstp_timer bp_migrate_delay_timer; 348 struct bstp_timer bp_recent_backup_timer; 349 struct bstp_timer bp_recent_root_timer; 350 struct bstp_timer bp_tc_timer; 351 struct bstp_config_unit bp_msg_cu; 352 struct bstp_pri_vector bp_desg_pv; 353 struct bstp_pri_vector bp_port_pv; 354 u_int16_t bp_port_id; 355 u_int8_t bp_state; 356 u_int8_t bp_tcstate; 357 u_int8_t bp_role; 358 u_int8_t bp_infois; 359 u_int8_t bp_tc_ack; 360 u_int8_t bp_tc_prop; 361 u_int8_t bp_fdbflush; 362 u_int8_t bp_priority; 363 u_int8_t bp_ptp_link; 364 u_int8_t bp_agree; 365 u_int8_t bp_agreed; 366 u_int8_t bp_sync; 367 u_int8_t bp_synced; 368 u_int8_t bp_proposing; 369 u_int8_t bp_proposed; 370 u_int8_t bp_operedge; 371 u_int8_t bp_reroot; 372 u_int8_t bp_rcvdtc; 373 u_int8_t bp_rcvdtca; 374 u_int8_t bp_rcvdtcn; 375 u_int32_t bp_forward_transitions; 376 u_int8_t bp_txcount; 377 }; 378 379 /* 380 * Software state for each bridge STP. 381 */ 382 struct bstp_state { 383 struct ifnet *bs_ifp; 384 struct bstp_pri_vector bs_bridge_pv; 385 struct bstp_pri_vector bs_root_pv; 386 struct bstp_port *bs_root_port; 387 u_int8_t bs_protover; 388 u_int16_t bs_migration_delay; 389 u_int16_t bs_edge_delay; 390 u_int16_t bs_bridge_max_age; 391 u_int16_t bs_bridge_fdelay; 392 u_int16_t bs_bridge_htime; 393 u_int16_t bs_root_msg_age; 394 u_int16_t bs_root_max_age; 395 u_int16_t bs_root_fdelay; 396 u_int16_t bs_root_htime; 397 u_int16_t bs_hold_time; 398 u_int16_t bs_bridge_priority; 399 u_int8_t bs_txholdcount; 400 u_int8_t bs_allsynced; 401 struct timeout bs_bstptimeout; /* stp timeout */ 402 struct bstp_timer bs_link_timer; 403 struct timeval bs_last_tc_time; 404 LIST_HEAD(, bstp_port) bs_bplist; 405 }; 406 #define bs_ifflags bs_ifp->if_flags 407 408 /* 409 * Bridge interface list 410 */ 411 struct bridge_iflist { 412 TAILQ_ENTRY(bridge_iflist) next; /* next in list */ 413 struct bridge_softc *bridge_sc; 414 struct bstp_port *bif_stp; /* STP port state */ 415 struct brl_head bif_brlin; /* input rules */ 416 struct brl_head bif_brlout; /* output rules */ 417 struct ifnet *ifp; /* member interface */ 418 u_int32_t bif_flags; /* member flags */ 419 u_int32_t bif_protected; /* protected domains */ 420 void *bif_dhcookie; 421 }; 422 #define bif_state bif_stp->bp_state 423 424 #define SAME_BRIDGE(_bp1, _bp2) \ 425 (_bp1 && _bp2 && ((struct bridge_iflist *)_bp1)->bridge_sc == \ 426 ((struct bridge_iflist *)_bp2)->bridge_sc) 427 428 /* 429 * XXX ip_ipsp.h's sockaddr_union should be converted to sockaddr * 430 * passing with correct sa_len, then a good approach for cleaning this 431 * will become more clear. 432 */ 433 union brsockaddr_union { 434 struct sockaddr sa; 435 struct sockaddr_in sin; 436 struct sockaddr_in6 sin6; 437 }; 438 439 /* 440 * Bridge tunnel tagging 441 */ 442 struct bridge_tunneltag { 443 union brsockaddr_union brtag_peer; 444 union brsockaddr_union brtag_local; 445 u_int32_t brtag_id; 446 }; 447 448 /* 449 * Bridge route node 450 */ 451 struct bridge_rtnode { 452 LIST_ENTRY(bridge_rtnode) brt_next; /* next in list */ 453 struct ifnet *brt_if; /* destination ifs */ 454 u_int8_t brt_flags; /* address flags */ 455 u_int8_t brt_age; /* age counter */ 456 struct ether_addr brt_addr; /* dst addr */ 457 struct bridge_tunneltag brt_tunnel; /* tunnel endpoint */ 458 }; 459 460 #ifndef BRIDGE_RTABLE_SIZE 461 #define BRIDGE_RTABLE_SIZE 1024 462 #endif 463 #define BRIDGE_RTABLE_MASK (BRIDGE_RTABLE_SIZE - 1) 464 465 /* 466 * Software state for each bridge 467 */ 468 struct bridge_softc { 469 struct ifnet sc_if; /* the interface */ 470 u_int32_t sc_brtmax; /* max # addresses */ 471 u_int32_t sc_brtcnt; /* current # addrs */ 472 int sc_brttimeout; /* timeout ticks */ 473 u_int64_t sc_hashkey[2]; /* siphash key */ 474 struct timeout sc_brtimeout; /* timeout state */ 475 struct bstp_state *sc_stp; /* stp state */ 476 TAILQ_HEAD(, bridge_iflist) sc_iflist; /* interface list */ 477 TAILQ_HEAD(, bridge_iflist) sc_spanlist; /* span ports */ 478 LIST_HEAD(, bridge_rtnode) sc_rts[BRIDGE_RTABLE_SIZE]; /* hash table */ 479 }; 480 481 extern const u_int8_t bstp_etheraddr[]; 482 struct llc; 483 484 int bridge_output(struct ifnet *, struct mbuf *, struct sockaddr *, 485 struct rtentry *); 486 void bridge_update(struct ifnet *, struct ether_addr *, int); 487 void bridge_rtdelete(struct bridge_softc *, struct ifnet *, int); 488 void bridge_rtagenode(struct ifnet *, int); 489 struct bridge_tunneltag *bridge_tunnel(struct mbuf *); 490 struct bridge_tunneltag *bridge_tunneltag(struct mbuf *); 491 void bridge_tunneluntag(struct mbuf *); 492 void bridge_copyaddr(struct sockaddr *, struct sockaddr *); 493 void bridge_copytag(struct bridge_tunneltag *, struct bridge_tunneltag *); 494 495 struct bstp_state *bstp_create(struct ifnet *); 496 void bstp_destroy(struct bstp_state *); 497 void bstp_initialization(struct bstp_state *); 498 void bstp_stop(struct bstp_state *); 499 int bstp_ioctl(struct ifnet *, u_long, caddr_t); 500 struct bstp_port *bstp_add(struct bstp_state *, struct ifnet *); 501 void bstp_delete(struct bstp_port *); 502 struct mbuf *bstp_input(struct bstp_state *, struct bstp_port *, 503 struct ether_header *, struct mbuf *); 504 void bstp_ifstate(void *); 505 u_int8_t bstp_getstate(struct bstp_state *, struct bstp_port *); 506 void bstp_ifsflags(struct bstp_port *, u_int); 507 508 int bridgectl_ioctl(struct ifnet *, u_long, caddr_t); 509 struct ifnet *bridge_rtupdate(struct bridge_softc *, 510 struct ether_addr *, struct ifnet *ifp, int, u_int8_t, struct mbuf *); 511 struct bridge_rtnode *bridge_rtlookup(struct bridge_softc *, 512 struct ether_addr *); 513 void bridge_rtflush(struct bridge_softc *, int); 514 void bridge_rtage(void *); 515 516 u_int8_t bridge_filterrule(struct brl_head *, struct ether_header *, 517 struct mbuf *); 518 void bridge_flushrule(struct bridge_iflist *); 519 520 void bridge_fragment(struct ifnet *, struct ifnet *, struct ether_header *, 521 struct mbuf *); 522 523 #endif /* _KERNEL */ 524 #endif /* _NET_IF_BRIDGE_H_ */ 525