1 /*- 2 * Copyright 2001 Wasabi Systems, Inc. 3 * All rights reserved. 4 * 5 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the NetBSD Project by 18 * Wasabi Systems, Inc. 19 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 20 * or promote products derived from this software without specific prior 21 * written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 * 35 * $FreeBSD: src/sbin/ifconfig/ifbridge.c,v 1.1.2.2 2005/12/28 04:12:58 thompsa Exp $ 36 * $DragonFly: src/sbin/ifconfig/ifbridge.c,v 1.2 2006/06/30 16:50:01 geekgod Exp $ 37 */ 38 39 #include <sys/param.h> 40 #include <sys/ioctl.h> 41 #include <sys/socket.h> 42 #include <sys/sockio.h> 43 44 #include <stdlib.h> 45 #include <unistd.h> 46 47 #include <net/ethernet.h> 48 #include <net/if.h> 49 #include <net/bridge/if_bridgevar.h> 50 #include <net/route.h> 51 52 #include <ctype.h> 53 #include <stdio.h> 54 #include <string.h> 55 #include <stdlib.h> 56 #include <unistd.h> 57 #include <err.h> 58 #include <errno.h> 59 60 #include "ifconfig.h" 61 62 static int 63 get_val(const char *cp, u_long *valp) 64 { 65 char *endptr; 66 u_long val; 67 68 errno = 0; 69 val = strtoul(cp, &endptr, 0); 70 if (cp[0] == '\0' || endptr[0] != '\0' || errno == ERANGE) 71 return (-1); 72 73 *valp = val; 74 return (0); 75 } 76 77 static int 78 do_cmd(int sock, u_long op, void *arg, size_t argsize, int set) 79 { 80 struct ifdrv ifd; 81 82 memset(&ifd, 0, sizeof(ifd)); 83 84 strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name)); 85 ifd.ifd_cmd = op; 86 ifd.ifd_len = argsize; 87 ifd.ifd_data = arg; 88 89 return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd)); 90 } 91 92 static void 93 do_bridgeflag(int sock, const char *ifs, int flag, int set) 94 { 95 struct ifbreq req; 96 97 strlcpy(req.ifbr_ifsname, ifs, sizeof(req.ifbr_ifsname)); 98 99 if (do_cmd(sock, BRDGGIFFLGS, &req, sizeof(req), 0) < 0) 100 err(1, "unable to get bridge flags"); 101 102 if (set) 103 req.ifbr_ifsflags |= flag; 104 else 105 req.ifbr_ifsflags &= ~flag; 106 107 if (do_cmd(sock, BRDGSIFFLGS, &req, sizeof(req), 1) < 0) 108 err(1, "unable to set bridge flags"); 109 } 110 111 static void 112 bridge_interfaces(int s, const char *prefix) 113 { 114 static const char *stpstates[] = { 115 "disabled", 116 "listening", 117 "learning", 118 "forwarding", 119 "blocking", 120 }; 121 struct ifbifconf bifc; 122 struct ifbreq *req; 123 char *inbuf = NULL, *ninbuf; 124 char *p, *pad; 125 int i, len = 8192; 126 127 pad = strdup(prefix); 128 if (pad == NULL) 129 err(1, "strdup"); 130 /* replace the prefix with whitespace */ 131 for (p = pad; *p != '\0'; p++) { 132 if(isprint(*p)) 133 *p = ' '; 134 } 135 136 for (;;) { 137 ninbuf = realloc(inbuf, len); 138 if (ninbuf == NULL) 139 err(1, "unable to allocate interface buffer"); 140 bifc.ifbic_len = len; 141 bifc.ifbic_buf = inbuf = ninbuf; 142 if (do_cmd(s, BRDGGIFS, &bifc, sizeof(bifc), 0) < 0) 143 err(1, "unable to get interface list"); 144 if ((bifc.ifbic_len + sizeof(*req)) < len) 145 break; 146 len *= 2; 147 } 148 149 for (i = 0; i < bifc.ifbic_len / sizeof(*req); i++) { 150 req = bifc.ifbic_req + i; 151 printf("%s%s ", prefix, req->ifbr_ifsname); 152 printb("flags", req->ifbr_ifsflags, IFBIFBITS); 153 printf("\n"); 154 155 if (req->ifbr_ifsflags & IFBIF_STP) { 156 printf("%s", pad); 157 printf("port %u priority %u", 158 req->ifbr_portno, req->ifbr_priority); 159 printf(" path cost %u", req->ifbr_path_cost); 160 if (req->ifbr_state < 161 sizeof(stpstates) / sizeof(stpstates[0])) 162 printf(" %s", stpstates[req->ifbr_state]); 163 else 164 printf(" <unknown state %d>", 165 req->ifbr_state); 166 printf("\n"); 167 } 168 } 169 170 free(inbuf); 171 } 172 173 static void 174 bridge_addresses(int s, const char *prefix) 175 { 176 struct ifbaconf ifbac; 177 struct ifbareq *ifba; 178 char *inbuf = NULL, *ninbuf; 179 int i, len = 8192; 180 struct ether_addr ea; 181 182 for (;;) { 183 ninbuf = realloc(inbuf, len); 184 if (ninbuf == NULL) 185 err(1, "unable to allocate address buffer"); 186 ifbac.ifbac_len = len; 187 ifbac.ifbac_buf = inbuf = ninbuf; 188 if (do_cmd(s, BRDGRTS, &ifbac, sizeof(ifbac), 0) < 0) 189 err(1, "unable to get address cache"); 190 if ((ifbac.ifbac_len + sizeof(*ifba)) < len) 191 break; 192 len *= 2; 193 } 194 195 for (i = 0; i < ifbac.ifbac_len / sizeof(*ifba); i++) { 196 ifba = ifbac.ifbac_req + i; 197 memcpy(ea.octet, ifba->ifba_dst, 198 sizeof(ea.octet)); 199 printf("%s%s %s %lu ", prefix, ether_ntoa(&ea), 200 ifba->ifba_ifsname, ifba->ifba_expire); 201 printb("flags", ifba->ifba_flags, IFBAFBITS); 202 printf("\n"); 203 } 204 205 free(inbuf); 206 } 207 208 static void 209 bridge_status(int s) 210 { 211 struct ifbrparam param; 212 u_int16_t pri; 213 u_int8_t ht, fd, ma; 214 215 if (do_cmd(s, BRDGGPRI, ¶m, sizeof(param), 0) < 0) 216 return; 217 pri = param.ifbrp_prio; 218 219 if (do_cmd(s, BRDGGHT, ¶m, sizeof(param), 0) < 0) 220 return; 221 ht = param.ifbrp_hellotime; 222 223 if (do_cmd(s, BRDGGFD, ¶m, sizeof(param), 0) < 0) 224 return; 225 fd = param.ifbrp_fwddelay; 226 227 if (do_cmd(s, BRDGGMA, ¶m, sizeof(param), 0) < 0) 228 return; 229 ma = param.ifbrp_maxage; 230 231 printf("\tpriority %u hellotime %u fwddelay %u maxage %u\n", 232 pri, ht, fd, ma); 233 234 bridge_interfaces(s, "\tmember: "); 235 236 return; 237 238 } 239 240 static void 241 setbridge_add(const char *val, int d, int s, const struct afswtch *afp) 242 { 243 struct ifbreq req; 244 245 memset(&req, 0, sizeof(req)); 246 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 247 if (do_cmd(s, BRDGADD, &req, sizeof(req), 1) < 0) 248 err(1, "BRDGADD %s", val); 249 } 250 251 static void 252 setbridge_delete(const char *val, int d, int s, const struct afswtch *afp) 253 { 254 struct ifbreq req; 255 256 memset(&req, 0, sizeof(req)); 257 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 258 if (do_cmd(s, BRDGDEL, &req, sizeof(req), 1) < 0) 259 err(1, "BRDGDEL %s", val); 260 } 261 262 static void 263 setbridge_discover(const char *val, int d, int s, const struct afswtch *afp) 264 { 265 266 do_bridgeflag(s, val, IFBIF_DISCOVER, 1); 267 } 268 269 static void 270 unsetbridge_discover(const char *val, int d, int s, const struct afswtch *afp) 271 { 272 273 do_bridgeflag(s, val, IFBIF_DISCOVER, 0); 274 } 275 276 static void 277 setbridge_learn(const char *val, int d, int s, const struct afswtch *afp) 278 { 279 280 do_bridgeflag(s, val, IFBIF_LEARNING, 1); 281 } 282 283 static void 284 unsetbridge_learn(const char *val, int d, int s, const struct afswtch *afp) 285 { 286 287 do_bridgeflag(s, val, IFBIF_LEARNING, 0); 288 } 289 290 static void 291 setbridge_span(const char *val, int d, int s, const struct afswtch *afp) 292 { 293 struct ifbreq req; 294 295 memset(&req, 0, sizeof(req)); 296 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 297 if (do_cmd(s, BRDGADDS, &req, sizeof(req), 1) < 0) 298 err(1, "BRDGADDS %s", val); 299 } 300 301 static void 302 unsetbridge_span(const char *val, int d, int s, const struct afswtch *afp) 303 { 304 struct ifbreq req; 305 306 memset(&req, 0, sizeof(req)); 307 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 308 if (do_cmd(s, BRDGDELS, &req, sizeof(req), 1) < 0) 309 err(1, "BRDGDELS %s", val); 310 } 311 312 static void 313 setbridge_stp(const char *val, int d, int s, const struct afswtch *afp) 314 { 315 316 do_bridgeflag(s, val, IFBIF_STP, 1); 317 } 318 319 static void 320 unsetbridge_stp(const char *val, int d, int s, const struct afswtch *afp) 321 { 322 323 do_bridgeflag(s, val, IFBIF_STP, 0); 324 } 325 326 static void 327 setbridge_flush(const char *val, int d, int s, const struct afswtch *afp) 328 { 329 struct ifbreq req; 330 331 memset(&req, 0, sizeof(req)); 332 req.ifbr_ifsflags = IFBF_FLUSHDYN; 333 if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0) 334 err(1, "BRDGFLUSH"); 335 } 336 337 static void 338 setbridge_flushall(const char *val, int d, int s, const struct afswtch *afp) 339 { 340 struct ifbreq req; 341 342 memset(&req, 0, sizeof(req)); 343 req.ifbr_ifsflags = IFBF_FLUSHALL; 344 if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0) 345 err(1, "BRDGFLUSH"); 346 } 347 348 static void 349 setbridge_static(const char *val, const char *mac, int s, 350 const struct afswtch *afp) 351 { 352 struct ifbareq req; 353 struct ether_addr *ea; 354 355 memset(&req, 0, sizeof(req)); 356 strlcpy(req.ifba_ifsname, val, sizeof(req.ifba_ifsname)); 357 358 ea = ether_aton(mac); 359 if (ea == NULL) 360 errx(1, "%s: invalid address: %s", val, mac); 361 362 memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst)); 363 req.ifba_flags = IFBAF_STATIC; 364 365 if (do_cmd(s, BRDGSADDR, &req, sizeof(req), 1) < 0) 366 err(1, "BRDGSADDR %s", val); 367 } 368 369 static void 370 setbridge_deladdr(const char *val, int d, int s, const struct afswtch *afp) 371 { 372 struct ifbareq req; 373 struct ether_addr *ea; 374 375 memset(&req, 0, sizeof(req)); 376 377 ea = ether_aton(val); 378 if (ea == NULL) 379 errx(1, "invalid address: %s", val); 380 381 memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst)); 382 383 if (do_cmd(s, BRDGDADDR, &req, sizeof(req), 1) < 0) 384 err(1, "BRDGDADDR %s", val); 385 } 386 387 static void 388 getbridge_addr(const char *val, int d, int s, const struct afswtch *afp) 389 { 390 bridge_addresses(s, ""); 391 } 392 393 static void 394 setbridge_maxaddr(const char *arg, int d, int s, const struct afswtch *afp) 395 { 396 struct ifbrparam param; 397 u_long val; 398 399 if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0) 400 errx(1, "invalid value: %s", arg); 401 402 param.ifbrp_csize = val & 0xffffffff; 403 404 if (do_cmd(s, BRDGSCACHE, ¶m, sizeof(param), 1) < 0) 405 err(1, "BRDGSCACHE %s", arg); 406 } 407 408 static void 409 setbridge_hellotime(const char *arg, int d, int s, const struct afswtch *afp) 410 { 411 struct ifbrparam param; 412 u_long val; 413 414 if (get_val(arg, &val) < 0 || (val & ~0xff) != 0) 415 errx(1, "invalid value: %s", arg); 416 417 param.ifbrp_hellotime = val & 0xff; 418 419 if (do_cmd(s, BRDGSHT, ¶m, sizeof(param), 1) < 0) 420 err(1, "BRDGSHT %s", arg); 421 } 422 423 static void 424 setbridge_fwddelay(const char *arg, int d, int s, const struct afswtch *afp) 425 { 426 struct ifbrparam param; 427 u_long val; 428 429 if (get_val(arg, &val) < 0 || (val & ~0xff) != 0) 430 errx(1, "invalid value: %s", arg); 431 432 param.ifbrp_fwddelay = val & 0xff; 433 434 if (do_cmd(s, BRDGSFD, ¶m, sizeof(param), 1) < 0) 435 err(1, "BRDGSFD %s", arg); 436 } 437 438 static void 439 setbridge_maxage(const char *arg, int d, int s, const struct afswtch *afp) 440 { 441 struct ifbrparam param; 442 u_long val; 443 444 if (get_val(arg, &val) < 0 || (val & ~0xff) != 0) 445 errx(1, "invalid value: %s", arg); 446 447 param.ifbrp_maxage = val & 0xff; 448 449 if (do_cmd(s, BRDGSMA, ¶m, sizeof(param), 1) < 0) 450 err(1, "BRDGSMA %s", arg); 451 } 452 453 static void 454 setbridge_priority(const char *arg, int d, int s, const struct afswtch *afp) 455 { 456 struct ifbrparam param; 457 u_long val; 458 459 if (get_val(arg, &val) < 0 || (val & ~0xffff) != 0) 460 errx(1, "invalid value: %s", arg); 461 462 param.ifbrp_prio = val & 0xffff; 463 464 if (do_cmd(s, BRDGSPRI, ¶m, sizeof(param), 1) < 0) 465 err(1, "BRDGSPRI %s", arg); 466 } 467 468 static void 469 setbridge_ifpriority(const char *ifn, const char *pri, int s, 470 const struct afswtch *afp) 471 { 472 struct ifbreq req; 473 u_long val; 474 475 memset(&req, 0, sizeof(req)); 476 477 if (get_val(pri, &val) < 0 || (val & ~0xff) != 0) 478 errx(1, "invalid value: %s", pri); 479 480 strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname)); 481 req.ifbr_priority = val & 0xff; 482 483 if (do_cmd(s, BRDGSIFPRIO, &req, sizeof(req), 1) < 0) 484 err(1, "BRDGSIFPRIO %s", pri); 485 } 486 487 static void 488 setbridge_ifpathcost(const char *ifn, const char *cost, int s, 489 const struct afswtch *afp) 490 { 491 struct ifbreq req; 492 u_long val; 493 494 memset(&req, 0, sizeof(req)); 495 496 if (get_val(cost, &val) < 0 || (val & ~0xff) != 0) 497 errx(1, "invalid value: %s", cost); 498 499 strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname)); 500 req.ifbr_path_cost = val & 0xffff; 501 502 if (do_cmd(s, BRDGSIFCOST, &req, sizeof(req), 1) < 0) 503 err(1, "BRDGSIFCOST %s", cost); 504 } 505 506 static void 507 setbridge_timeout(const char *arg, int d, int s, const struct afswtch *afp) 508 { 509 struct ifbrparam param; 510 u_long val; 511 512 if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0) 513 errx(1, "invalid value: %s", arg); 514 515 param.ifbrp_ctime = val & 0xffffffff; 516 517 if (do_cmd(s, BRDGSTO, ¶m, sizeof(param), 1) < 0) 518 err(1, "BRDGSTO %s", arg); 519 } 520 521 static struct cmd bridge_cmds[] = { 522 DEF_CMD_ARG("addm", setbridge_add), 523 DEF_CMD_ARG("deletem", setbridge_delete), 524 DEF_CMD_ARG("discover", setbridge_discover), 525 DEF_CMD_ARG("-discover", unsetbridge_discover), 526 DEF_CMD_ARG("learn", setbridge_learn), 527 DEF_CMD_ARG("-learn", unsetbridge_learn), 528 DEF_CMD_ARG("span", setbridge_span), 529 DEF_CMD_ARG("-span", unsetbridge_span), 530 DEF_CMD_ARG("stp", setbridge_stp), 531 DEF_CMD_ARG("-stp", unsetbridge_stp), 532 DEF_CMD("flush", 0, setbridge_flush), 533 DEF_CMD("flushall", 0, setbridge_flushall), 534 DEF_CMD_ARG2("static", setbridge_static), 535 DEF_CMD_ARG("deladdr", setbridge_deladdr), 536 DEF_CMD("addr", 1, getbridge_addr), 537 DEF_CMD_ARG("maxaddr", setbridge_maxaddr), 538 DEF_CMD_ARG("hellotime", setbridge_hellotime), 539 DEF_CMD_ARG("fwddelay", setbridge_fwddelay), 540 DEF_CMD_ARG("maxage", setbridge_maxage), 541 DEF_CMD_ARG("priority", setbridge_priority), 542 DEF_CMD_ARG2("ifpriority", setbridge_ifpriority), 543 DEF_CMD_ARG2("ifpathcost", setbridge_ifpathcost), 544 DEF_CMD_ARG("timeout", setbridge_timeout), 545 }; 546 static struct afswtch af_bridge = { 547 .af_name = "af_bridge", 548 .af_af = AF_UNSPEC, 549 .af_other_status = bridge_status, 550 }; 551 552 static __constructor void 553 bridge_ctor(void) 554 { 555 #define N(a) (sizeof(a) / sizeof(a[0])) 556 int i; 557 558 for (i = 0; i < N(bridge_cmds); i++) 559 cmd_register(&bridge_cmds[i]); 560 af_register(&af_bridge); 561 #undef N 562 } 563