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 BRDGSEDGE 30 /* set edge status (ifbreq) */ 118 #define BRDGSAEDGE 31 /* set autoedge status (ifbreq) */ 119 120 /* 121 * Generic bridge control request. 122 */ 123 struct ifbreq { 124 char ifbr_ifsname[IFNAMSIZ]; /* member if name */ 125 uint32_t ifbr_ifsflags; /* member if flags */ 126 uint32_t ifbr_stpflags; /* member if STP flags */ 127 uint8_t ifbr_edge; /* member if STP edge */ 128 uint8_t ifbr_autoedge; /* member if STP autoedge */ 129 uint8_t ifbr_p2p; /* member if STP p2p */ 130 uint32_t ifbr_path_cost; /* member if STP cost */ 131 uint8_t ifbr_portno; /* member if port number */ 132 uint8_t ifbr_priority; /* member if STP priority */ 133 uint8_t ifbr_proto; /* member if STP protocol */ 134 uint8_t ifbr_role; /* member if STP role */ 135 uint8_t ifbr_state; /* member if STP state */ 136 }; 137 138 /* BRDGGIFFLAGS, BRDGSIFFLAGS */ 139 #define IFBIF_LEARNING 0x01 /* if can learn */ 140 #define IFBIF_DISCOVER 0x02 /* if sends packets w/ unknown dest. */ 141 #define IFBIF_STP 0x04 /* if participates in spanning tree */ 142 #define IFBIF_SPAN 0x08 /* if is a span port */ 143 144 #define IFBIFBITS "\020\1LEARNING\2DISCOVER\3STP\4SPAN" 145 146 /* BRDGFLUSH */ 147 #define IFBF_FLUSHDYN 0x00 /* flush learned addresses only */ 148 #define IFBF_FLUSHALL 0x01 /* flush all addresses */ 149 150 /* 151 * Interface list structure. 152 */ 153 struct ifbifconf { 154 uint32_t ifbic_len; /* buffer size */ 155 union { 156 caddr_t ifbicu_buf; 157 struct ifbreq *ifbicu_req; 158 } ifbic_ifbicu; 159 #define ifbic_buf ifbic_ifbicu.ifbicu_buf 160 #define ifbic_req ifbic_ifbicu.ifbicu_req 161 }; 162 163 /* 164 * Bridge address request. 165 */ 166 struct ifbareq { 167 char ifba_ifsname[IFNAMSIZ]; /* member if name */ 168 unsigned long ifba_expire; /* address expire time */ 169 uint8_t ifba_flags; /* address flags */ 170 uint8_t ifba_dst[ETHER_ADDR_LEN];/* destination address */ 171 }; 172 173 #define IFBAF_TYPEMASK 0x03 /* address type mask */ 174 #define IFBAF_DYNAMIC 0x00 /* dynamically learned address */ 175 #define IFBAF_STATIC 0x01 /* static address */ 176 177 #define IFBAFBITS "\020\1STATIC" 178 179 /* 180 * Address list structure. 181 */ 182 struct ifbaconf { 183 uint32_t ifbac_len; /* buffer size */ 184 union { 185 caddr_t ifbacu_buf; 186 struct ifbareq *ifbacu_req; 187 } ifbac_ifbacu; 188 #define ifbac_buf ifbac_ifbacu.ifbacu_buf 189 #define ifbac_req ifbac_ifbacu.ifbacu_req 190 }; 191 192 /* 193 * Bridge parameter structure. 194 */ 195 struct ifbrparam { 196 union { 197 uint32_t ifbrpu_int32; 198 uint16_t ifbrpu_int16; 199 uint8_t ifbrpu_int8; 200 } ifbrp_ifbrpu; 201 }; 202 #define ifbrp_csize ifbrp_ifbrpu.ifbrpu_int32 /* cache size */ 203 #define ifbrp_ctime ifbrp_ifbrpu.ifbrpu_int32 /* cache time (sec) */ 204 #define ifbrp_prio ifbrp_ifbrpu.ifbrpu_int16 /* bridge priority */ 205 #define ifbrp_proto ifbrp_ifbrpu.ifbrpu_int8 /* bridge protocol */ 206 #define ifbrp_txhc ifbrp_ifbrpu.ifbrpu_int8 /* bpdu tx holdcount */ 207 #define ifbrp_hellotime ifbrp_ifbrpu.ifbrpu_int8 /* hello time (sec) */ 208 #define ifbrp_fwddelay ifbrp_ifbrpu.ifbrpu_int8 /* fwd time (sec) */ 209 #define ifbrp_maxage ifbrp_ifbrpu.ifbrpu_int8 /* max age (sec) */ 210 #define ifbrp_cexceeded ifbrp_ifbrpu.ifbrpu_int32 /* # of cache dropped 211 * adresses */ 212 /* 213 * Bridge current operational parameters structure. 214 */ 215 struct ifbropreq { 216 uint8_t ifbop_holdcount; 217 uint8_t ifbop_maxage; 218 uint8_t ifbop_hellotime; 219 uint8_t ifbop_fwddelay; 220 uint8_t ifbop_protocol; 221 uint16_t ifbop_priority; 222 uint16_t ifbop_root_port; 223 uint32_t ifbop_root_path_cost; 224 uint64_t ifbop_designated_root; 225 struct timeval ifbop_last_tc_time; 226 }; 227 228 /* 229 * Bridge member operational STP params structure. 230 */ 231 struct ifbpstpreq { 232 uint8_t ifbp_portno; /* bp STP port number */ 233 uint32_t ifbp_fwd_trans; /* bp STP fwd transitions */ 234 uint32_t ifbp_design_cost; /* bp STP designated cost */ 235 uint32_t ifbp_design_port; /* bp STP designated port */ 236 uint64_t ifbp_design_bridge; /* bp STP designated bridge */ 237 uint64_t ifbp_design_root; /* bp STP designated root */ 238 }; 239 240 /* 241 * Bridge STP ports list structure. 242 */ 243 struct ifbpstpconf { 244 uint32_t ifbpstp_len; /* buffer size */ 245 union { 246 caddr_t ifbpstpu_buf; 247 struct ifbpstpreq *ifbpstpu_req; 248 } ifbpstp_ifbpstpu; 249 #define ifbpstp_buf ifbpstp_ifbpstpu.ifbpstpu_buf 250 #define ifbpstp_req ifbpstp_ifbpstpu.ifbpstpu_req 251 }; 252 253 #ifdef _KERNEL 254 255 #define BRIDGE_LOCK_INIT(_sc) do { \ 256 mtx_init(&(_sc)->sc_mtx, "if_bridge", NULL, MTX_DEF); \ 257 cv_init(&(_sc)->sc_cv, "if_bridge_cv"); \ 258 } while (0) 259 #define BRIDGE_LOCK_DESTROY(_sc) do { \ 260 mtx_destroy(&(_sc)->sc_mtx); \ 261 cv_destroy(&(_sc)->sc_cv); \ 262 } while (0) 263 #define BRIDGE_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) 264 #define BRIDGE_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) 265 #define BRIDGE_LOCKED(_sc) mtx_owned(&(_sc)->sc_mtx) 266 #define BRIDGE_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED) 267 #define BRIDGE_LOCK2REF(_sc, _err) do { \ 268 mtx_assert(&(_sc)->sc_mtx, MA_OWNED); \ 269 if ((_sc)->sc_iflist_xcnt > 0) \ 270 (_err) = EBUSY; \ 271 else \ 272 (_sc)->sc_iflist_ref++; \ 273 mtx_unlock(&(_sc)->sc_mtx); \ 274 } while (0) 275 #define BRIDGE_UNREF(_sc) do { \ 276 mtx_lock(&(_sc)->sc_mtx); \ 277 (_sc)->sc_iflist_ref--; \ 278 if (((_sc)->sc_iflist_xcnt > 0) && ((_sc)->sc_iflist_ref == 0)) \ 279 cv_broadcast(&(_sc)->sc_cv); \ 280 mtx_unlock(&(_sc)->sc_mtx); \ 281 } while (0) 282 #define BRIDGE_XLOCK(_sc) do { \ 283 mtx_assert(&(_sc)->sc_mtx, MA_OWNED); \ 284 (_sc)->sc_iflist_xcnt++; \ 285 while ((_sc)->sc_iflist_ref > 0) \ 286 cv_wait(&(_sc)->sc_cv, &(_sc)->sc_mtx); \ 287 } while (0) 288 #define BRIDGE_XDROP(_sc) do { \ 289 mtx_assert(&(_sc)->sc_mtx, MA_OWNED); \ 290 (_sc)->sc_iflist_xcnt--; \ 291 } while (0) 292 293 #define BRIDGE_INPUT(_ifp, _m) do { \ 294 KASSERT(bridge_input_p != NULL, \ 295 ("%s: if_bridge not loaded!", __func__)); \ 296 _m = (*bridge_input_p)(_ifp, _m); \ 297 if (_m != NULL) \ 298 _ifp = _m->m_pkthdr.rcvif; \ 299 } while (0) 300 301 #define BRIDGE_OUTPUT(_ifp, _m, _err) do { \ 302 KASSERT(bridge_output_p != NULL, \ 303 ("%s: if_bridge not loaded!", __func__)); \ 304 _err = (*bridge_output_p)(_ifp, _m, NULL, NULL); \ 305 } while (0) 306 307 extern struct mbuf *(*bridge_input_p)(struct ifnet *, struct mbuf *); 308 extern int (*bridge_output_p)(struct ifnet *, struct mbuf *, 309 struct sockaddr *, struct rtentry *); 310 extern void (*bridge_dn_p)(struct mbuf *, struct ifnet *); 311 312 #endif /* _KERNEL */ 313