1/* $NetBSD: if_bridgevar.h,v 1.4 2003/07/08 07:13:50 itojun Exp $ */ 2 3/* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * Copyright (c) 1999, 2000 Jason L. Wright (jason@thought.net) 40 * All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by Jason L. Wright 53 * 4. The name of the author may not be used to endorse or promote products 54 * derived from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 58 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 59 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 60 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 61 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 62 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 63 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 64 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 65 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 66 * POSSIBILITY OF SUCH DAMAGE. 67 * 68 * OpenBSD: if_bridge.h,v 1.14 2001/03/22 03:48:29 jason Exp 69 * 70 * $FreeBSD$ 71 */ 72 73/* 74 * Data structure and control definitions for bridge interfaces. 75 */ 76 77#include <sys/callout.h> 78#include <sys/queue.h> 79#include <sys/condvar.h> 80 81/* 82 * Commands used in the SIOCSDRVSPEC ioctl. Note the lookup of the 83 * bridge interface itself is keyed off the ifdrv structure. 84 */ 85#define BRDGADD 0 /* add bridge member (ifbreq) */ 86#define BRDGDEL 1 /* delete bridge member (ifbreq) */ 87#define BRDGGIFFLGS 2 /* get member if flags (ifbreq) */ 88#define BRDGSIFFLGS 3 /* set member if flags (ifbreq) */ 89#define BRDGSCACHE 4 /* set cache size (ifbrparam) */ 90#define BRDGGCACHE 5 /* get cache size (ifbrparam) */ 91#define BRDGGIFS 6 /* get member list (ifbifconf) */ 92#define BRDGRTS 7 /* get address list (ifbaconf) */ 93#define BRDGSADDR 8 /* set static address (ifbareq) */ 94#define BRDGSTO 9 /* set cache timeout (ifbrparam) */ 95#define BRDGGTO 10 /* get cache timeout (ifbrparam) */ 96#define BRDGDADDR 11 /* delete address (ifbareq) */ 97#define BRDGFLUSH 12 /* flush address cache (ifbreq) */ 98 99#define BRDGGPRI 13 /* get priority (ifbrparam) */ 100#define BRDGSPRI 14 /* set priority (ifbrparam) */ 101#define BRDGGHT 15 /* get hello time (ifbrparam) */ 102#define BRDGSHT 16 /* set hello time (ifbrparam) */ 103#define BRDGGFD 17 /* get forward delay (ifbrparam) */ 104#define BRDGSFD 18 /* set forward delay (ifbrparam) */ 105#define BRDGGMA 19 /* get max age (ifbrparam) */ 106#define BRDGSMA 20 /* set max age (ifbrparam) */ 107#define BRDGSIFPRIO 21 /* set if priority (ifbreq) */ 108#define BRDGSIFCOST 22 /* set if path cost (ifbreq) */ 109#define BRDGADDS 23 /* add bridge span member (ifbreq) */ 110#define BRDGDELS 24 /* delete bridge span member (ifbreq) */ 111#define BRDGPARAM 25 /* get bridge STP params (ifbropreq) */ 112#define BRDGGRTE 26 /* get cache drops (ifbrparam) */ 113#define BRDGGIFSSTP 27 /* get member STP params list 114 * (ifbpstpconf) */ 115#define BRDGSPROTO 28 /* set protocol (ifbrparam) */ 116#define BRDGSTXHC 29 /* set tx hold count (ifbrparam) */ 117#define BRDGSIFAMAX 30 /* set max interface addrs (ifbreq) */ 118 119/* 120 * Generic bridge control request. 121 */ 122struct ifbreq { 123 char ifbr_ifsname[IFNAMSIZ]; /* member if name */ 124 uint32_t ifbr_ifsflags; /* member if flags */ 125 uint32_t ifbr_stpflags; /* member if STP flags */ 126 uint32_t ifbr_path_cost; /* member if STP cost */ 127 uint8_t ifbr_portno; /* member if port number */ 128 uint8_t ifbr_priority; /* member if STP priority */ 129 uint8_t ifbr_proto; /* member if STP protocol */ 130 uint8_t ifbr_role; /* member if STP role */ 131 uint8_t ifbr_state; /* member if STP state */ 132 uint32_t ifbr_addrcnt; /* member if addr number */ 133 uint32_t ifbr_addrmax; /* member if addr max */ 134 uint32_t ifbr_addrexceeded; /* member if addr violations */ 135 uint8_t pad[32]; 136}; 137 138/* BRDGGIFFLAGS, BRDGSIFFLAGS */ 139#define IFBIF_LEARNING 0x0001 /* if can learn */ 140#define IFBIF_DISCOVER 0x0002 /* if sends packets w/ unknown dest. */ 141#define IFBIF_STP 0x0004 /* if participates in spanning tree */ 142#define IFBIF_SPAN 0x0008 /* if is a span port */ 143#define IFBIF_STICKY 0x0010 /* if learned addresses stick */ 144#define IFBIF_BSTP_EDGE 0x0020 /* member stp edge port */ 145#define IFBIF_BSTP_AUTOEDGE 0x0040 /* member stp autoedge enabled */ 146#define IFBIF_BSTP_PTP 0x0080 /* member stp point to point */ 147#define IFBIF_BSTP_AUTOPTP 0x0100 /* member stp autoptp enabled */ 148#define IFBIF_BSTP_ADMEDGE 0x0200 /* member stp admin edge enabled */ 149#define IFBIF_BSTP_ADMCOST 0x0400 /* member stp admin path cost */ 150#define IFBIF_PRIVATE 0x0800 /* if is a private segment */ 151 152#define IFBIFBITS "\020\001LEARNING\002DISCOVER\003STP\004SPAN" \ 153 "\005STICKY\014PRIVATE\006EDGE\007AUTOEDGE\010PTP" \ 154 "\011AUTOPTP" 155#define IFBIFMASK ~(IFBIF_BSTP_EDGE|IFBIF_BSTP_AUTOEDGE|IFBIF_BSTP_PTP| \ 156 IFBIF_BSTP_AUTOPTP|IFBIF_BSTP_ADMEDGE| \ 157 IFBIF_BSTP_ADMCOST) /* not saved */ 158 159/* BRDGFLUSH */ 160#define IFBF_FLUSHDYN 0x00 /* flush learned addresses only */ 161#define IFBF_FLUSHALL 0x01 /* flush all addresses */ 162 163/* 164 * Interface list structure. 165 */ 166struct ifbifconf { 167 uint32_t ifbic_len; /* buffer size */ 168 union { 169 caddr_t ifbicu_buf; 170 struct ifbreq *ifbicu_req; 171 } ifbic_ifbicu; 172#define ifbic_buf ifbic_ifbicu.ifbicu_buf 173#define ifbic_req ifbic_ifbicu.ifbicu_req 174}; 175 176/* 177 * Bridge address request. 178 */ 179struct ifbareq { 180 char ifba_ifsname[IFNAMSIZ]; /* member if name */ 181 unsigned long ifba_expire; /* address expire time */ 182 uint8_t ifba_flags; /* address flags */ 183 uint8_t ifba_dst[ETHER_ADDR_LEN];/* destination address */ 184 uint16_t ifba_vlan; /* vlan id */ 185}; 186 187#define IFBAF_TYPEMASK 0x03 /* address type mask */ 188#define IFBAF_DYNAMIC 0x00 /* dynamically learned address */ 189#define IFBAF_STATIC 0x01 /* static address */ 190#define IFBAF_STICKY 0x02 /* sticky address */ 191 192#define IFBAFBITS "\020\1STATIC\2STICKY" 193 194/* 195 * Address list structure. 196 */ 197struct ifbaconf { 198 uint32_t ifbac_len; /* buffer size */ 199 union { 200 caddr_t ifbacu_buf; 201 struct ifbareq *ifbacu_req; 202 } ifbac_ifbacu; 203#define ifbac_buf ifbac_ifbacu.ifbacu_buf 204#define ifbac_req ifbac_ifbacu.ifbacu_req 205}; 206 207/* 208 * Bridge parameter structure. 209 */ 210struct ifbrparam { 211 union { 212 uint32_t ifbrpu_int32; 213 uint16_t ifbrpu_int16; 214 uint8_t ifbrpu_int8; 215 } ifbrp_ifbrpu; 216}; 217#define ifbrp_csize ifbrp_ifbrpu.ifbrpu_int32 /* cache size */ 218#define ifbrp_ctime ifbrp_ifbrpu.ifbrpu_int32 /* cache time (sec) */ 219#define ifbrp_prio ifbrp_ifbrpu.ifbrpu_int16 /* bridge priority */ 220#define ifbrp_proto ifbrp_ifbrpu.ifbrpu_int8 /* bridge protocol */ 221#define ifbrp_txhc ifbrp_ifbrpu.ifbrpu_int8 /* bpdu tx holdcount */ 222#define ifbrp_hellotime ifbrp_ifbrpu.ifbrpu_int8 /* hello time (sec) */ 223#define ifbrp_fwddelay ifbrp_ifbrpu.ifbrpu_int8 /* fwd time (sec) */ 224#define ifbrp_maxage ifbrp_ifbrpu.ifbrpu_int8 /* max age (sec) */ 225#define ifbrp_cexceeded ifbrp_ifbrpu.ifbrpu_int32 /* # of cache dropped 226 * adresses */ 227/* 228 * Bridge current operational parameters structure. 229 */ 230struct ifbropreq { 231 uint8_t ifbop_holdcount; 232 uint8_t ifbop_maxage; 233 uint8_t ifbop_hellotime; 234 uint8_t ifbop_fwddelay; 235 uint8_t ifbop_protocol; 236 uint16_t ifbop_priority; 237 uint16_t ifbop_root_port; 238 uint32_t ifbop_root_path_cost; 239 uint64_t ifbop_bridgeid; 240 uint64_t ifbop_designated_root; 241 uint64_t ifbop_designated_bridge; 242 struct timeval ifbop_last_tc_time; 243}; 244 245/* 246 * Bridge member operational STP params structure. 247 */ 248struct ifbpstpreq { 249 uint8_t ifbp_portno; /* bp STP port number */ 250 uint32_t ifbp_fwd_trans; /* bp STP fwd transitions */ 251 uint32_t ifbp_design_cost; /* bp STP designated cost */ 252 uint32_t ifbp_design_port; /* bp STP designated port */ 253 uint64_t ifbp_design_bridge; /* bp STP designated bridge */ 254 uint64_t ifbp_design_root; /* bp STP designated root */ 255}; 256 257/* 258 * Bridge STP ports list structure. 259 */ 260struct ifbpstpconf { 261 uint32_t ifbpstp_len; /* buffer size */ 262 union { 263 caddr_t ifbpstpu_buf; 264 struct ifbpstpreq *ifbpstpu_req; 265 } ifbpstp_ifbpstpu; 266#define ifbpstp_buf ifbpstp_ifbpstpu.ifbpstpu_buf 267#define ifbpstp_req ifbpstp_ifbpstpu.ifbpstpu_req 268}; 269 270#ifdef _KERNEL 271 272#define BRIDGE_LOCK_INIT(_sc) do { \ 273 mtx_init(&(_sc)->sc_mtx, "if_bridge", NULL, MTX_DEF); \ 274 cv_init(&(_sc)->sc_cv, "if_bridge_cv"); \ 275} while (0) 276#define BRIDGE_LOCK_DESTROY(_sc) do { \ 277 mtx_destroy(&(_sc)->sc_mtx); \ 278 cv_destroy(&(_sc)->sc_cv); \ 279} while (0) 280#define BRIDGE_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) 281#define BRIDGE_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) 282#define BRIDGE_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED) 283#define BRIDGE_LOCK2REF(_sc, _err) do { \ 284 mtx_assert(&(_sc)->sc_mtx, MA_OWNED); \ 285 if ((_sc)->sc_iflist_xcnt > 0) \ 286 (_err) = EBUSY; \ 287 else \ 288 (_sc)->sc_iflist_ref++; \ 289 mtx_unlock(&(_sc)->sc_mtx); \ 290} while (0) 291#define BRIDGE_UNREF(_sc) do { \ 292 mtx_lock(&(_sc)->sc_mtx); \ 293 (_sc)->sc_iflist_ref--; \ 294 if (((_sc)->sc_iflist_xcnt > 0) && ((_sc)->sc_iflist_ref == 0)) \ 295 cv_broadcast(&(_sc)->sc_cv); \ 296 mtx_unlock(&(_sc)->sc_mtx); \ 297} while (0) 298#define BRIDGE_XLOCK(_sc) do { \ 299 mtx_assert(&(_sc)->sc_mtx, MA_OWNED); \ 300 (_sc)->sc_iflist_xcnt++; \ 301 while ((_sc)->sc_iflist_ref > 0) \ 302 cv_wait(&(_sc)->sc_cv, &(_sc)->sc_mtx); \ 303} while (0) 304#define BRIDGE_XDROP(_sc) do { \ 305 mtx_assert(&(_sc)->sc_mtx, MA_OWNED); \ 306 (_sc)->sc_iflist_xcnt--; \ 307} while (0) 308 309#define BRIDGE_INPUT(_ifp, _m) do { \ 310 KASSERT(bridge_input_p != NULL, \ 311 ("%s: if_bridge not loaded!", __func__)); \ 312 _m = (*bridge_input_p)(_ifp, _m); \ 313 if (_m != NULL) \ 314 _ifp = _m->m_pkthdr.rcvif; \ 315} while (0) 316 317#define BRIDGE_OUTPUT(_ifp, _m, _err) do { \ 318 KASSERT(bridge_output_p != NULL, \ 319 ("%s: if_bridge not loaded!", __func__)); \ 320 _err = (*bridge_output_p)(_ifp, _m, NULL, NULL); \ 321} while (0) 322 323extern struct mbuf *(*bridge_input_p)(struct ifnet *, struct mbuf *); 324extern int (*bridge_output_p)(struct ifnet *, struct mbuf *, 325 struct sockaddr *, struct rtentry *); 326extern void (*bridge_dn_p)(struct mbuf *, struct ifnet *); 327 328#endif /* _KERNEL */ 329