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 */ 37 38 #include <sys/param.h> 39 #include <sys/ioctl.h> 40 #include <sys/socket.h> 41 #include <sys/sockio.h> 42 43 #include <stdlib.h> 44 #include <unistd.h> 45 46 #include <net/ethernet.h> 47 #include <net/if.h> 48 #include <net/bridge/if_bridgevar.h> 49 #include <net/route.h> 50 51 #include <ctype.h> 52 #include <stdio.h> 53 #include <string.h> 54 #include <err.h> 55 #include <errno.h> 56 57 #include "ifconfig.h" 58 59 static int 60 get_val(const char *cp, u_long *valp) 61 { 62 char *endptr; 63 u_long val; 64 65 errno = 0; 66 val = strtoul(cp, &endptr, 0); 67 if (cp[0] == '\0' || endptr[0] != '\0' || errno == ERANGE) 68 return (-1); 69 70 *valp = val; 71 return (0); 72 } 73 74 static int 75 do_cmd(int sock, u_long op, void *arg, size_t argsize, int set) 76 { 77 struct ifdrv ifd; 78 79 memset(&ifd, 0, sizeof(ifd)); 80 81 strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name)); 82 ifd.ifd_cmd = op; 83 ifd.ifd_len = argsize; 84 ifd.ifd_data = arg; 85 86 return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd)); 87 } 88 89 static void 90 do_bridgeflag(int sock, const char *ifs, int flag, int set) 91 { 92 struct ifbreq req; 93 94 strlcpy(req.ifbr_ifsname, ifs, sizeof(req.ifbr_ifsname)); 95 96 if (do_cmd(sock, BRDGGIFFLGS, &req, sizeof(req), 0) < 0) 97 err(1, "unable to get bridge flags"); 98 99 if (set) 100 req.ifbr_ifsflags |= flag; 101 else 102 req.ifbr_ifsflags &= ~flag; 103 104 if (do_cmd(sock, BRDGSIFFLGS, &req, sizeof(req), 1) < 0) 105 err(1, "unable to set bridge flags"); 106 } 107 108 static void 109 bridge_interfaces(int s, const char *prefix) 110 { 111 static const char *stpstates[] = { 112 "disabled", 113 "listening", 114 "learning", 115 "forwarding", 116 "blocking", 117 "bonded", 118 "blocking (link1)" 119 }; 120 struct ifbifconf bifc; 121 struct ifbreq *req; 122 char *inbuf = NULL, *ninbuf; 123 char *p, *pad; 124 int i, len = 8192; 125 126 pad = strdup(prefix); 127 if (pad == NULL) 128 err(1, "strdup"); 129 /* replace the prefix with whitespace */ 130 for (p = pad; *p != '\0'; p++) { 131 if(isprint(*p)) 132 *p = ' '; 133 } 134 135 for (;;) { 136 ninbuf = realloc(inbuf, len); 137 if (ninbuf == NULL) 138 err(1, "unable to allocate interface buffer"); 139 bifc.ifbic_len = len; 140 bifc.ifbic_buf = inbuf = ninbuf; 141 if (do_cmd(s, BRDGGIFS, &bifc, sizeof(bifc), 0) < 0) 142 err(1, "unable to get interface list"); 143 if ((bifc.ifbic_len + sizeof(*req)) < len) 144 break; 145 len *= 2; 146 } 147 148 for (i = 0; i < bifc.ifbic_len / sizeof(*req); i++) { 149 req = bifc.ifbic_req + i; 150 printf("%s%s ", prefix, req->ifbr_ifsname); 151 printb("flags", req->ifbr_ifsflags, IFBIFBITS); 152 printf("\n"); 153 154 if (req->ifbr_ifsflags & IFBIF_STP) { 155 printf("%s", pad); 156 printf("port %u priority %u", 157 req->ifbr_portno, req->ifbr_priority); 158 printf(" pathcost %u", req->ifbr_path_cost); 159 if (req->ifbr_state < NELEM(stpstates)) 160 printf(" %s", stpstates[req->ifbr_state]); 161 else 162 printf(" <unknown state %d>", 163 req->ifbr_state); 164 printf("\n"); 165 printf("%sbondweight %u\n", 166 pad, req->ifbr_bond_weight); 167 printf("%sdesignated root: %016jx\n", 168 pad, (intmax_t)req->ifbr_designated_root); 169 printf("%sdesignated bridge: %016jx\n", 170 pad, (intmax_t)req->ifbr_designated_bridge); 171 printf("%sdesignated cost: %u\n", 172 pad, req->ifbr_designated_cost); 173 printf("%sdesignated port: %u\n", 174 pad, req->ifbr_designated_port); 175 if (verbose) { 176 printf("%speer root: %016jx\n", 177 pad, (intmax_t)req->ifbr_peer_root); 178 printf("%speer bridge: %016jx\n", 179 pad, (intmax_t)req->ifbr_peer_bridge); 180 printf("%speer cost: %u\n", 181 pad, req->ifbr_peer_cost); 182 printf("%speer port: %u\n", 183 pad, req->ifbr_peer_port); 184 } 185 } 186 } 187 188 free(inbuf); 189 } 190 191 static void 192 bridge_addresses(int s, const char *prefix) 193 { 194 struct ifbaconf ifbac; 195 struct ifbareq *ifba; 196 char *inbuf = NULL, *ninbuf; 197 int i, len = 8192; 198 struct ether_addr ea; 199 200 for (;;) { 201 ninbuf = realloc(inbuf, len); 202 if (ninbuf == NULL) 203 err(1, "unable to allocate address buffer"); 204 ifbac.ifbac_len = len; 205 ifbac.ifbac_buf = inbuf = ninbuf; 206 if (do_cmd(s, BRDGRTS, &ifbac, sizeof(ifbac), 0) < 0) 207 err(1, "unable to get address cache"); 208 if ((ifbac.ifbac_len + sizeof(*ifba)) < len) 209 break; 210 len *= 2; 211 } 212 213 for (i = 0; i < ifbac.ifbac_len / sizeof(*ifba); i++) { 214 ifba = ifbac.ifbac_req + i; 215 memcpy(ea.octet, ifba->ifba_dst, 216 sizeof(ea.octet)); 217 printf("%s%s %s %lu ", prefix, ether_ntoa(&ea), 218 ifba->ifba_ifsname, ifba->ifba_expire); 219 printb("flags", ifba->ifba_flags, IFBAFBITS); 220 printf("\n"); 221 } 222 223 free(inbuf); 224 } 225 226 static void 227 bridge_status(int s) 228 { 229 struct ifbrparam param; 230 u_int16_t pri; 231 u_int8_t ht, fd, ma; 232 233 if (do_cmd(s, BRDGGPRI, ¶m, sizeof(param), 0) < 0) 234 return; 235 pri = param.ifbrp_prio; 236 237 if (do_cmd(s, BRDGGHT, ¶m, sizeof(param), 0) < 0) 238 return; 239 ht = param.ifbrp_hellotime; 240 241 if (do_cmd(s, BRDGGFD, ¶m, sizeof(param), 0) < 0) 242 return; 243 fd = param.ifbrp_fwddelay; 244 245 if (do_cmd(s, BRDGGMA, ¶m, sizeof(param), 0) < 0) 246 return; 247 ma = param.ifbrp_maxage; 248 249 printf("\tpriority %u hellotime %u fwddelay %u maxage %u\n", 250 pri, ht, fd, ma); 251 252 bridge_interfaces(s, "\tmember: "); 253 254 return; 255 256 } 257 258 static void 259 setbridge_add(const char *val, int d, int s, const struct afswtch *afp) 260 { 261 struct ifbreq req; 262 263 memset(&req, 0, sizeof(req)); 264 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 265 if (do_cmd(s, BRDGADD, &req, sizeof(req), 1) < 0) 266 err(1, "BRDGADD %s", val); 267 } 268 269 static void 270 setbridge_delete(const char *val, int d, int s, const struct afswtch *afp) 271 { 272 struct ifbreq req; 273 274 memset(&req, 0, sizeof(req)); 275 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 276 if (do_cmd(s, BRDGDEL, &req, sizeof(req), 1) < 0) 277 err(1, "BRDGDEL %s", val); 278 } 279 280 static void 281 setbridge_discover(const char *val, int d, int s, const struct afswtch *afp) 282 { 283 284 do_bridgeflag(s, val, IFBIF_DISCOVER, 1); 285 } 286 287 static void 288 unsetbridge_discover(const char *val, int d, int s, const struct afswtch *afp) 289 { 290 291 do_bridgeflag(s, val, IFBIF_DISCOVER, 0); 292 } 293 294 static void 295 setbridge_learn(const char *val, int d, int s, const struct afswtch *afp) 296 { 297 298 do_bridgeflag(s, val, IFBIF_LEARNING, 1); 299 } 300 301 static void 302 unsetbridge_learn(const char *val, int d, int s, const struct afswtch *afp) 303 { 304 305 do_bridgeflag(s, val, IFBIF_LEARNING, 0); 306 } 307 308 static void 309 setbridge_span(const char *val, int d, int s, const struct afswtch *afp) 310 { 311 struct ifbreq req; 312 313 memset(&req, 0, sizeof(req)); 314 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 315 if (do_cmd(s, BRDGADDS, &req, sizeof(req), 1) < 0) 316 err(1, "BRDGADDS %s", val); 317 } 318 319 static void 320 unsetbridge_span(const char *val, int d, int s, const struct afswtch *afp) 321 { 322 struct ifbreq req; 323 324 memset(&req, 0, sizeof(req)); 325 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 326 if (do_cmd(s, BRDGDELS, &req, sizeof(req), 1) < 0) 327 err(1, "BRDGDELS %s", val); 328 } 329 330 static void 331 setbridge_stp(const char *val, int d, int s, const struct afswtch *afp) 332 { 333 334 do_bridgeflag(s, val, IFBIF_STP, 1); 335 } 336 337 static void 338 unsetbridge_stp(const char *val, int d, int s, const struct afswtch *afp) 339 { 340 341 do_bridgeflag(s, val, IFBIF_STP, 0); 342 } 343 344 static void 345 setbridge_flush(const char *val, int d, int s, const struct afswtch *afp) 346 { 347 struct ifbreq req; 348 349 memset(&req, 0, sizeof(req)); 350 req.ifbr_ifsflags = IFBF_FLUSHDYN; 351 if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0) 352 err(1, "BRDGFLUSH"); 353 } 354 355 static void 356 setbridge_flushall(const char *val, int d, int s, const struct afswtch *afp) 357 { 358 struct ifbreq req; 359 360 memset(&req, 0, sizeof(req)); 361 req.ifbr_ifsflags = IFBF_FLUSHALL; 362 if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0) 363 err(1, "BRDGFLUSH"); 364 } 365 366 static void 367 setbridge_static(const char *val, const char *mac, int s, 368 const struct afswtch *afp) 369 { 370 struct ifbareq req; 371 struct ether_addr *ea; 372 373 memset(&req, 0, sizeof(req)); 374 strlcpy(req.ifba_ifsname, val, sizeof(req.ifba_ifsname)); 375 376 ea = ether_aton(mac); 377 if (ea == NULL) 378 errx(1, "%s: invalid address: %s", val, mac); 379 380 memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst)); 381 req.ifba_flags = IFBAF_STATIC; 382 383 if (do_cmd(s, BRDGSADDR, &req, sizeof(req), 1) < 0) 384 err(1, "BRDGSADDR %s", val); 385 } 386 387 static void 388 setbridge_deladdr(const char *val, int d, int s, const struct afswtch *afp) 389 { 390 struct ifbareq req; 391 struct ether_addr *ea; 392 393 memset(&req, 0, sizeof(req)); 394 395 ea = ether_aton(val); 396 if (ea == NULL) 397 errx(1, "invalid address: %s", val); 398 399 memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst)); 400 401 if (do_cmd(s, BRDGDADDR, &req, sizeof(req), 1) < 0) 402 err(1, "BRDGDADDR %s", val); 403 } 404 405 static void 406 getbridge_addr(const char *val, int d, int s, const struct afswtch *afp) 407 { 408 bridge_addresses(s, ""); 409 } 410 411 static void 412 setbridge_maxaddr(const char *arg, int d, int s, const struct afswtch *afp) 413 { 414 struct ifbrparam param; 415 u_long val; 416 417 if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0) 418 errx(1, "invalid value: %s", arg); 419 420 param.ifbrp_csize = val & 0xffffffff; 421 422 if (do_cmd(s, BRDGSCACHE, ¶m, sizeof(param), 1) < 0) 423 err(1, "BRDGSCACHE %s", arg); 424 } 425 426 static void 427 setbridge_hellotime(const char *arg, int d, int s, const struct afswtch *afp) 428 { 429 struct ifbrparam param; 430 u_long val; 431 432 if (get_val(arg, &val) < 0 || (val & ~0xff) != 0) 433 errx(1, "invalid value: %s", arg); 434 435 param.ifbrp_hellotime = val & 0xff; 436 437 if (do_cmd(s, BRDGSHT, ¶m, sizeof(param), 1) < 0) 438 err(1, "BRDGSHT %s", arg); 439 } 440 441 static void 442 setbridge_fwddelay(const char *arg, int d, int s, const struct afswtch *afp) 443 { 444 struct ifbrparam param; 445 u_long val; 446 447 if (get_val(arg, &val) < 0 || (val & ~0xff) != 0) 448 errx(1, "invalid value: %s", arg); 449 450 param.ifbrp_fwddelay = val & 0xff; 451 452 if (do_cmd(s, BRDGSFD, ¶m, sizeof(param), 1) < 0) 453 err(1, "BRDGSFD %s", arg); 454 } 455 456 static void 457 setbridge_maxage(const char *arg, int d, int s, const struct afswtch *afp) 458 { 459 struct ifbrparam param; 460 u_long val; 461 462 if (get_val(arg, &val) < 0 || (val & ~0xff) != 0) 463 errx(1, "invalid value: %s", arg); 464 465 param.ifbrp_maxage = val & 0xff; 466 467 if (do_cmd(s, BRDGSMA, ¶m, sizeof(param), 1) < 0) 468 err(1, "BRDGSMA %s", arg); 469 } 470 471 static void 472 setbridge_priority(const char *arg, int d, int s, const struct afswtch *afp) 473 { 474 struct ifbrparam param; 475 u_long val; 476 477 if (get_val(arg, &val) < 0 || (val & ~0xffff) != 0) 478 errx(1, "invalid value: %s", arg); 479 480 param.ifbrp_prio = val & 0xffff; 481 482 if (do_cmd(s, BRDGSPRI, ¶m, sizeof(param), 1) < 0) 483 err(1, "BRDGSPRI %s", arg); 484 } 485 486 static void 487 setbridge_ifpriority(const char *ifn, const char *pri, int s, 488 const struct afswtch *afp) 489 { 490 struct ifbreq req; 491 u_long val; 492 493 memset(&req, 0, sizeof(req)); 494 495 if (get_val(pri, &val) < 0 || (val & ~0xff) != 0) 496 errx(1, "invalid value: %s", pri); 497 498 strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname)); 499 req.ifbr_priority = val & 0xff; 500 501 if (do_cmd(s, BRDGSIFPRIO, &req, sizeof(req), 1) < 0) 502 err(1, "BRDGSIFPRIO %s", pri); 503 } 504 505 static void 506 setbridge_ifpathcost(const char *ifn, const char *cost, int s, 507 const struct afswtch *afp) 508 { 509 struct ifbreq req; 510 u_long val; 511 512 memset(&req, 0, sizeof(req)); 513 514 if (get_val(cost, &val) < 0 || (val & ~0xff) != 0) 515 errx(1, "invalid value: %s", cost); 516 517 strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname)); 518 req.ifbr_path_cost = val & 0xffff; 519 520 if (do_cmd(s, BRDGSIFCOST, &req, sizeof(req), 1) < 0) 521 err(1, "BRDGSIFCOST %s", cost); 522 } 523 524 static void 525 setbridge_ifbondweight(const char *ifn, const char *cost, int s, 526 const struct afswtch *afp) 527 { 528 struct ifbreq req; 529 u_long val; 530 531 memset(&req, 0, sizeof(req)); 532 533 if (get_val(cost, &val) < 0 || (val & ~0xff) != 0) 534 errx(1, "invalid value: %s", cost); 535 536 strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname)); 537 if (val > 65535) 538 val = 65535; 539 req.ifbr_bond_weight = (uint16_t)val; 540 541 if (do_cmd(s, BRDGSBONDWGHT, &req, sizeof(req), 1) < 0) 542 err(1, "BRDGSBONDWGHT %s", cost); 543 } 544 545 static void 546 setbridge_timeout(const char *arg, int d, int s, const struct afswtch *afp) 547 { 548 struct ifbrparam param; 549 u_long val; 550 551 if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0) 552 errx(1, "invalid value: %s", arg); 553 554 param.ifbrp_ctime = val & 0xffffffff; 555 556 if (do_cmd(s, BRDGSTO, ¶m, sizeof(param), 1) < 0) 557 err(1, "BRDGSTO %s", arg); 558 } 559 560 static struct cmd bridge_cmds[] = { 561 DEF_CMD_ARG("addm", setbridge_add), 562 DEF_CMD_ARG("deletem", setbridge_delete), 563 DEF_CMD_ARG("discover", setbridge_discover), 564 DEF_CMD_ARG("-discover", unsetbridge_discover), 565 DEF_CMD_ARG("learn", setbridge_learn), 566 DEF_CMD_ARG("-learn", unsetbridge_learn), 567 DEF_CMD_ARG("span", setbridge_span), 568 DEF_CMD_ARG("-span", unsetbridge_span), 569 DEF_CMD_ARG("stp", setbridge_stp), 570 DEF_CMD_ARG("-stp", unsetbridge_stp), 571 DEF_CMD("flush", 0, setbridge_flush), 572 DEF_CMD("flushall", 0, setbridge_flushall), 573 DEF_CMD_ARG2("static", setbridge_static), 574 DEF_CMD_ARG("deladdr", setbridge_deladdr), 575 DEF_CMD("addr", 1, getbridge_addr), 576 DEF_CMD_ARG("maxaddr", setbridge_maxaddr), 577 DEF_CMD_ARG("hellotime", setbridge_hellotime), 578 DEF_CMD_ARG("fwddelay", setbridge_fwddelay), 579 DEF_CMD_ARG("maxage", setbridge_maxage), 580 DEF_CMD_ARG("priority", setbridge_priority), 581 DEF_CMD_ARG2("ifpriority", setbridge_ifpriority), 582 DEF_CMD_ARG2("ifpathcost", setbridge_ifpathcost), 583 DEF_CMD_ARG2("ifbondweight", setbridge_ifbondweight), 584 DEF_CMD_ARG("timeout", setbridge_timeout), 585 }; 586 static struct afswtch af_bridge = { 587 .af_name = "af_bridge", 588 .af_af = AF_UNSPEC, 589 .af_other_status = bridge_status, 590 }; 591 592 static __constructor(101) void 593 bridge_ctor(void) 594 { 595 #define N(a) (sizeof(a) / sizeof(a[0])) 596 int i; 597 598 for (i = 0; i < N(bridge_cmds); i++) 599 cmd_register(&bridge_cmds[i]); 600 af_register(&af_bridge); 601 #undef N 602 } 603