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 #include <net/if.h> 43 #include <net/route.h> 44 #include <net/ethernet.h> 45 #include <net/bridge/if_bridgevar.h> 46 47 #include <ctype.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <unistd.h> 52 #include <err.h> 53 #include <errno.h> 54 55 #include "ifconfig.h" 56 57 static int 58 get_val(const char *cp, u_long *valp) 59 { 60 char *endptr; 61 u_long val; 62 63 errno = 0; 64 val = strtoul(cp, &endptr, 0); 65 if (cp[0] == '\0' || endptr[0] != '\0' || errno == ERANGE) 66 return (-1); 67 68 *valp = val; 69 return (0); 70 } 71 72 static int 73 do_cmd(int sock, u_long op, void *arg, size_t argsize, int set) 74 { 75 struct ifdrv ifd; 76 77 memset(&ifd, 0, sizeof(ifd)); 78 79 strlcpy(ifd.ifd_name, IfName, sizeof(ifd.ifd_name)); 80 ifd.ifd_cmd = op; 81 ifd.ifd_len = argsize; 82 ifd.ifd_data = arg; 83 84 return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd)); 85 } 86 87 static void 88 do_bridgeflag(int sock, const char *ifs, int flag, int set) 89 { 90 struct ifbreq req; 91 92 strlcpy(req.ifbr_ifsname, ifs, sizeof(req.ifbr_ifsname)); 93 94 if (do_cmd(sock, BRDGGIFFLGS, &req, sizeof(req), 0) < 0) 95 err(1, "unable to get bridge flags"); 96 97 if (set) 98 req.ifbr_ifsflags |= flag; 99 else 100 req.ifbr_ifsflags &= ~flag; 101 102 if (do_cmd(sock, BRDGSIFFLGS, &req, sizeof(req), 1) < 0) 103 err(1, "unable to set bridge flags"); 104 } 105 106 static void 107 bridge_interfaces(int s, const char *prefix) 108 { 109 static const char *stpstates[] = { 110 "disabled", 111 "listening", 112 "learning", 113 "forwarding", 114 "blocking", 115 "bonded", 116 "blocking (link1)" 117 }; 118 struct ifbifconf bifc; 119 struct ifbreq *req; 120 char *inbuf = NULL, *ninbuf; 121 char *p, *pad; 122 size_t i, len = 8192; 123 124 pad = strdup(prefix); 125 if (pad == NULL) 126 err(1, "strdup"); 127 /* replace the prefix with whitespace */ 128 for (p = pad; *p != '\0'; p++) { 129 if(isprint(*p)) 130 *p = ' '; 131 } 132 133 for (;;) { 134 ninbuf = realloc(inbuf, len); 135 if (ninbuf == NULL) 136 err(1, "unable to allocate interface buffer"); 137 bifc.ifbic_len = len; 138 bifc.ifbic_buf = inbuf = ninbuf; 139 if (do_cmd(s, BRDGGIFS, &bifc, sizeof(bifc), 0) < 0) 140 err(1, "unable to get interface list"); 141 if ((bifc.ifbic_len + sizeof(*req)) < len) 142 break; 143 len *= 2; 144 } 145 146 for (i = 0; i < bifc.ifbic_len / sizeof(*req); i++) { 147 req = bifc.ifbic_req + i; 148 printf("%s%s ", prefix, req->ifbr_ifsname); 149 printb("flags", req->ifbr_ifsflags, IFBIFBITS); 150 printf("\n"); 151 152 if (req->ifbr_ifsflags & IFBIF_STP) { 153 printf("%s", pad); 154 printf("port %u priority %u", 155 req->ifbr_portno, req->ifbr_priority); 156 printf(" pathcost %u", req->ifbr_path_cost); 157 if (req->ifbr_state < nitems(stpstates)) 158 printf(" %s", stpstates[req->ifbr_state]); 159 else 160 printf(" <unknown state %d>", 161 req->ifbr_state); 162 printf("\n"); 163 printf("%sbondweight %u\n", 164 pad, req->ifbr_bond_weight); 165 printf("%sdesignated root: %016jx\n", 166 pad, (uintmax_t)req->ifbr_designated_root); 167 printf("%sdesignated bridge: %016jx\n", 168 pad, (uintmax_t)req->ifbr_designated_bridge); 169 printf("%sdesignated cost: %u\n", 170 pad, req->ifbr_designated_cost); 171 printf("%sdesignated port: %u\n", 172 pad, req->ifbr_designated_port); 173 if (verbose) { 174 printf("%speer root: %016jx\n", 175 pad, (uintmax_t)req->ifbr_peer_root); 176 printf("%speer bridge: %016jx\n", 177 pad, (uintmax_t)req->ifbr_peer_bridge); 178 printf("%speer cost: %u\n", 179 pad, req->ifbr_peer_cost); 180 printf("%speer port: %u\n", 181 pad, req->ifbr_peer_port); 182 } 183 } 184 } 185 186 free(inbuf); 187 } 188 189 static void 190 bridge_addresses(int s, const char *prefix) 191 { 192 struct ifbaconf ifbac; 193 struct ifbareq *ifba; 194 struct ether_addr ea; 195 char *inbuf = NULL, *ninbuf; 196 size_t i, len = 8192; 197 198 for (;;) { 199 ninbuf = realloc(inbuf, len); 200 if (ninbuf == NULL) 201 err(1, "unable to allocate address buffer"); 202 ifbac.ifbac_len = len; 203 ifbac.ifbac_buf = inbuf = ninbuf; 204 if (do_cmd(s, BRDGRTS, &ifbac, sizeof(ifbac), 0) < 0) 205 err(1, "unable to get address cache"); 206 if ((ifbac.ifbac_len + sizeof(*ifba)) < len) 207 break; 208 len *= 2; 209 } 210 211 for (i = 0; i < ifbac.ifbac_len / sizeof(*ifba); i++) { 212 ifba = ifbac.ifbac_req + i; 213 memcpy(ea.octet, ifba->ifba_dst, 214 sizeof(ea.octet)); 215 printf("%s%s %s %lu ", prefix, ether_ntoa(&ea), 216 ifba->ifba_ifsname, ifba->ifba_expire); 217 printb("flags", ifba->ifba_flags, IFBAFBITS); 218 printf("\n"); 219 } 220 221 free(inbuf); 222 } 223 224 static void 225 bridge_status(int s) 226 { 227 struct ifbrparam param; 228 u_int16_t pri; 229 u_int8_t ht, fd, ma; 230 231 if (do_cmd(s, BRDGGPRI, ¶m, sizeof(param), 0) < 0) 232 return; 233 pri = param.ifbrp_prio; 234 235 if (do_cmd(s, BRDGGHT, ¶m, sizeof(param), 0) < 0) 236 return; 237 ht = param.ifbrp_hellotime; 238 239 if (do_cmd(s, BRDGGFD, ¶m, sizeof(param), 0) < 0) 240 return; 241 fd = param.ifbrp_fwddelay; 242 243 if (do_cmd(s, BRDGGMA, ¶m, sizeof(param), 0) < 0) 244 return; 245 ma = param.ifbrp_maxage; 246 247 printf("\tpriority %u hellotime %u fwddelay %u maxage %u\n", 248 pri, ht, fd, ma); 249 250 bridge_interfaces(s, "\tmember: "); 251 252 return; 253 254 } 255 256 static void 257 setbridge_add(const char *val, int d __unused, int s, 258 const struct afswtch *afp __unused) 259 { 260 struct ifbreq req; 261 262 memset(&req, 0, sizeof(req)); 263 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 264 if (do_cmd(s, BRDGADD, &req, sizeof(req), 1) < 0) 265 err(1, "BRDGADD %s", val); 266 } 267 268 static void 269 setbridge_delete(const char *val, int d __unused, int s, 270 const struct afswtch *afp __unused) 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 __unused, int s, 282 const struct afswtch *afp __unused) 283 { 284 do_bridgeflag(s, val, IFBIF_DISCOVER, 1); 285 } 286 287 static void 288 unsetbridge_discover(const char *val, int d __unused, int s, 289 const struct afswtch *afp __unused) 290 { 291 do_bridgeflag(s, val, IFBIF_DISCOVER, 0); 292 } 293 294 static void 295 setbridge_learn(const char *val, int d __unused, int s, 296 const struct afswtch *afp __unused) 297 { 298 do_bridgeflag(s, val, IFBIF_LEARNING, 1); 299 } 300 301 static void 302 unsetbridge_learn(const char *val, int d __unused, int s, 303 const struct afswtch *afp __unused) 304 { 305 do_bridgeflag(s, val, IFBIF_LEARNING, 0); 306 } 307 308 static void 309 setbridge_span(const char *val, int d __unused, int s, 310 const struct afswtch *afp __unused) 311 { 312 struct ifbreq req; 313 314 memset(&req, 0, sizeof(req)); 315 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 316 if (do_cmd(s, BRDGADDS, &req, sizeof(req), 1) < 0) 317 err(1, "BRDGADDS %s", val); 318 } 319 320 static void 321 unsetbridge_span(const char *val, int d __unused, int s, 322 const struct afswtch *afp __unused) 323 { 324 struct ifbreq req; 325 326 memset(&req, 0, sizeof(req)); 327 strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname)); 328 if (do_cmd(s, BRDGDELS, &req, sizeof(req), 1) < 0) 329 err(1, "BRDGDELS %s", val); 330 } 331 332 static void 333 setbridge_stp(const char *val, int d __unused, int s, 334 const struct afswtch *afp __unused) 335 { 336 do_bridgeflag(s, val, IFBIF_STP, 1); 337 } 338 339 static void 340 unsetbridge_stp(const char *val, int d __unused, int s, 341 const struct afswtch *afp __unused) 342 { 343 do_bridgeflag(s, val, IFBIF_STP, 0); 344 } 345 346 static void 347 setbridge_flush(const char *val __unused, int d __unused, int s, 348 const struct afswtch *afp __unused) 349 { 350 struct ifbreq req; 351 352 memset(&req, 0, sizeof(req)); 353 req.ifbr_ifsflags = IFBF_FLUSHDYN; 354 if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0) 355 err(1, "BRDGFLUSH"); 356 } 357 358 static void 359 setbridge_flushall(const char *val __unused, int d __unused, int s, 360 const struct afswtch *afp __unused) 361 { 362 struct ifbreq req; 363 364 memset(&req, 0, sizeof(req)); 365 req.ifbr_ifsflags = IFBF_FLUSHALL; 366 if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0) 367 err(1, "BRDGFLUSH"); 368 } 369 370 static void 371 setbridge_static(const char *val, const char *mac, int s, 372 const struct afswtch *afp __unused) 373 { 374 struct ifbareq req; 375 struct ether_addr *ea; 376 377 memset(&req, 0, sizeof(req)); 378 strlcpy(req.ifba_ifsname, val, sizeof(req.ifba_ifsname)); 379 380 ea = ether_aton(mac); 381 if (ea == NULL) 382 errx(1, "%s: invalid address: %s", val, mac); 383 384 memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst)); 385 req.ifba_flags = IFBAF_STATIC; 386 387 if (do_cmd(s, BRDGSADDR, &req, sizeof(req), 1) < 0) 388 err(1, "BRDGSADDR %s", val); 389 } 390 391 static void 392 setbridge_deladdr(const char *val, int d __unused, int s, 393 const struct afswtch *afp __unused) 394 { 395 struct ifbareq req; 396 struct ether_addr *ea; 397 398 memset(&req, 0, sizeof(req)); 399 400 ea = ether_aton(val); 401 if (ea == NULL) 402 errx(1, "invalid address: %s", val); 403 404 memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst)); 405 406 if (do_cmd(s, BRDGDADDR, &req, sizeof(req), 1) < 0) 407 err(1, "BRDGDADDR %s", val); 408 } 409 410 static void 411 getbridge_addr(const char *val __unused, int d __unused, int s, 412 const struct afswtch *afp __unused) 413 { 414 bridge_addresses(s, ""); 415 } 416 417 static void 418 setbridge_maxaddr(const char *arg, int d __unused, int s, 419 const struct afswtch *afp __unused) 420 { 421 struct ifbrparam param; 422 u_long val; 423 424 if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0) 425 errx(1, "invalid value: %s", arg); 426 427 param.ifbrp_csize = val & 0xffffffff; 428 429 if (do_cmd(s, BRDGSCACHE, ¶m, sizeof(param), 1) < 0) 430 err(1, "BRDGSCACHE %s", arg); 431 } 432 433 static void 434 setbridge_hellotime(const char *arg, int d __unused, int s, 435 const struct afswtch *afp __unused) 436 { 437 struct ifbrparam param; 438 u_long val; 439 440 if (get_val(arg, &val) < 0 || (val & ~0xff) != 0) 441 errx(1, "invalid value: %s", arg); 442 443 param.ifbrp_hellotime = val & 0xff; 444 445 if (do_cmd(s, BRDGSHT, ¶m, sizeof(param), 1) < 0) 446 err(1, "BRDGSHT %s", arg); 447 } 448 449 static void 450 setbridge_fwddelay(const char *arg, int d __unused, int s, 451 const struct afswtch *afp __unused) 452 { 453 struct ifbrparam param; 454 u_long val; 455 456 if (get_val(arg, &val) < 0 || (val & ~0xff) != 0) 457 errx(1, "invalid value: %s", arg); 458 459 param.ifbrp_fwddelay = val & 0xff; 460 461 if (do_cmd(s, BRDGSFD, ¶m, sizeof(param), 1) < 0) 462 err(1, "BRDGSFD %s", arg); 463 } 464 465 static void 466 setbridge_maxage(const char *arg, int d __unused, int s, 467 const struct afswtch *afp __unused) 468 { 469 struct ifbrparam param; 470 u_long val; 471 472 if (get_val(arg, &val) < 0 || (val & ~0xff) != 0) 473 errx(1, "invalid value: %s", arg); 474 475 param.ifbrp_maxage = val & 0xff; 476 477 if (do_cmd(s, BRDGSMA, ¶m, sizeof(param), 1) < 0) 478 err(1, "BRDGSMA %s", arg); 479 } 480 481 static void 482 setbridge_priority(const char *arg, int d __unused, int s, 483 const struct afswtch *afp __unused) 484 { 485 struct ifbrparam param; 486 u_long val; 487 488 if (get_val(arg, &val) < 0 || (val & ~0xffff) != 0) 489 errx(1, "invalid value: %s", arg); 490 491 param.ifbrp_prio = val & 0xffff; 492 493 if (do_cmd(s, BRDGSPRI, ¶m, sizeof(param), 1) < 0) 494 err(1, "BRDGSPRI %s", arg); 495 } 496 497 static void 498 setbridge_ifpriority(const char *ifn, const char *pri, int s, 499 const struct afswtch *afp __unused) 500 { 501 struct ifbreq req; 502 u_long val; 503 504 memset(&req, 0, sizeof(req)); 505 506 if (get_val(pri, &val) < 0 || (val & ~0xff) != 0) 507 errx(1, "invalid value: %s", pri); 508 509 strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname)); 510 req.ifbr_priority = val & 0xff; 511 512 if (do_cmd(s, BRDGSIFPRIO, &req, sizeof(req), 1) < 0) 513 err(1, "BRDGSIFPRIO %s", pri); 514 } 515 516 static void 517 setbridge_ifpathcost(const char *ifn, const char *cost, int s, 518 const struct afswtch *afp __unused) 519 { 520 struct ifbreq req; 521 u_long val; 522 523 memset(&req, 0, sizeof(req)); 524 525 if (get_val(cost, &val) < 0 || (val & ~0xff) != 0) 526 errx(1, "invalid value: %s", cost); 527 528 strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname)); 529 req.ifbr_path_cost = val & 0xffff; 530 531 if (do_cmd(s, BRDGSIFCOST, &req, sizeof(req), 1) < 0) 532 err(1, "BRDGSIFCOST %s", cost); 533 } 534 535 static void 536 setbridge_ifbondweight(const char *ifn, const char *cost, int s, 537 const struct afswtch *afp __unused) 538 { 539 struct ifbreq req; 540 u_long val; 541 542 memset(&req, 0, sizeof(req)); 543 544 if (get_val(cost, &val) < 0 || (val & ~0xff) != 0) 545 errx(1, "invalid value: %s", cost); 546 547 strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname)); 548 if (val > 65535) 549 val = 65535; 550 req.ifbr_bond_weight = (uint16_t)val; 551 552 if (do_cmd(s, BRDGSBONDWGHT, &req, sizeof(req), 1) < 0) 553 err(1, "BRDGSBONDWGHT %s", cost); 554 } 555 556 static void 557 setbridge_timeout(const char *arg, int d __unused, int s, 558 const struct afswtch *afp __unused) 559 { 560 struct ifbrparam param; 561 u_long val; 562 563 if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0) 564 errx(1, "invalid value: %s", arg); 565 566 param.ifbrp_ctime = val & 0xffffffff; 567 568 if (do_cmd(s, BRDGSTO, ¶m, sizeof(param), 1) < 0) 569 err(1, "BRDGSTO %s", arg); 570 } 571 572 static struct cmd bridge_cmds[] = { 573 DEF_CMD_ARG("addm", setbridge_add), 574 DEF_CMD_ARG("deletem", setbridge_delete), 575 DEF_CMD_ARG("discover", setbridge_discover), 576 DEF_CMD_ARG("-discover", unsetbridge_discover), 577 DEF_CMD_ARG("learn", setbridge_learn), 578 DEF_CMD_ARG("-learn", unsetbridge_learn), 579 DEF_CMD_ARG("span", setbridge_span), 580 DEF_CMD_ARG("-span", unsetbridge_span), 581 DEF_CMD_ARG("stp", setbridge_stp), 582 DEF_CMD_ARG("-stp", unsetbridge_stp), 583 DEF_CMD("flush", 0, setbridge_flush), 584 DEF_CMD("flushall", 0, setbridge_flushall), 585 DEF_CMD_ARG2("static", setbridge_static), 586 DEF_CMD_ARG("deladdr", setbridge_deladdr), 587 DEF_CMD("addr", 1, getbridge_addr), 588 DEF_CMD_ARG("maxaddr", setbridge_maxaddr), 589 DEF_CMD_ARG("hellotime", setbridge_hellotime), 590 DEF_CMD_ARG("fwddelay", setbridge_fwddelay), 591 DEF_CMD_ARG("maxage", setbridge_maxage), 592 DEF_CMD_ARG("priority", setbridge_priority), 593 DEF_CMD_ARG2("ifpriority", setbridge_ifpriority), 594 DEF_CMD_ARG2("ifpathcost", setbridge_ifpathcost), 595 DEF_CMD_ARG2("ifbondweight", setbridge_ifbondweight), 596 DEF_CMD_ARG("timeout", setbridge_timeout), 597 }; 598 static struct afswtch af_bridge = { 599 .af_name = "af_bridge", 600 .af_af = AF_UNSPEC, 601 .af_other_status = bridge_status, 602 }; 603 604 __constructor(141) 605 static void 606 bridge_ctor(void) 607 { 608 size_t i; 609 610 for (i = 0; i < nitems(bridge_cmds); i++) 611 cmd_register(&bridge_cmds[i]); 612 613 af_register(&af_bridge); 614 } 615