1 /* $OpenBSD: show.c,v 1.107 2016/09/05 14:23:38 claudio Exp $ */ 2 /* $NetBSD: show.c,v 1.1 1996/11/15 18:01:41 gwr Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/socket.h> 34 #include <sys/sysctl.h> 35 36 #include <net/if.h> 37 #include <net/if_dl.h> 38 #include <net/if_types.h> 39 #include <net/route.h> 40 #include <netinet/in.h> 41 #include <netinet/if_ether.h> 42 #include <netmpls/mpls.h> 43 #include <arpa/inet.h> 44 45 #include <err.h> 46 #include <errno.h> 47 #include <netdb.h> 48 #include <stdio.h> 49 #include <stddef.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 #include <limits.h> 54 55 #include "show.h" 56 57 char *any_ntoa(const struct sockaddr *); 58 char *link_print(struct sockaddr *); 59 char *label_print(struct sockaddr *); 60 61 #define ROUNDUP(a) \ 62 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 63 #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 64 65 /* 66 * Definitions for showing gateway flags. 67 */ 68 struct bits { 69 int b_mask; 70 char b_val; 71 }; 72 static const struct bits bits[] = { 73 { RTF_UP, 'U' }, 74 { RTF_GATEWAY, 'G' }, 75 { RTF_HOST, 'H' }, 76 { RTF_REJECT, 'R' }, 77 { RTF_DYNAMIC, 'D' }, 78 { RTF_MODIFIED, 'M' }, 79 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 80 { RTF_CLONING, 'C' }, 81 { RTF_MULTICAST,'m' }, 82 { RTF_LLINFO, 'L' }, 83 { RTF_STATIC, 'S' }, 84 { RTF_BLACKHOLE,'B' }, 85 { RTF_PROTO3, '3' }, 86 { RTF_PROTO2, '2' }, 87 { RTF_PROTO1, '1' }, 88 { RTF_CLONED, 'c' }, 89 { RTF_CACHED, 'h' }, 90 { RTF_MPATH, 'P' }, 91 { RTF_MPLS, 'T' }, 92 { RTF_LOCAL, 'l' }, 93 { RTF_BFD, 'F' }, 94 { RTF_BROADCAST,'b' }, 95 { RTF_CONNECTED,'n' }, 96 { 0 } 97 }; 98 99 int WID_DST(int); 100 void pr_rthdr(int); 101 void p_rtentry(struct rt_msghdr *); 102 void pr_family(int); 103 void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int); 104 void p_sockaddr_mpls(struct sockaddr *, struct sockaddr *, int, int); 105 void p_flags(int, char *); 106 char *routename4(in_addr_t); 107 char *routename6(struct sockaddr_in6 *); 108 char *netname4(in_addr_t, struct sockaddr_in *); 109 char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 110 111 /* 112 * Print routing tables. 113 */ 114 void 115 p_rttables(int af, u_int tableid, int hastable, char prio) 116 { 117 struct rt_msghdr *rtm; 118 char *buf = NULL, *next, *lim = NULL; 119 size_t needed; 120 int mib[7], mcnt; 121 struct sockaddr *sa; 122 123 mib[0] = CTL_NET; 124 mib[1] = PF_ROUTE; 125 mib[2] = 0; 126 mib[3] = af; 127 mib[4] = NET_RT_DUMP; 128 mib[5] = prio; 129 if (hastable) { 130 mib[6] = tableid; 131 mcnt = 7; 132 } else 133 mcnt = 6; 134 135 while (1) { 136 if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1) 137 err(1, "route-sysctl-estimate"); 138 if (needed == 0) 139 break; 140 if ((buf = realloc(buf, needed)) == NULL) 141 err(1, NULL); 142 if (sysctl(mib, mcnt, buf, &needed, NULL, 0) == -1) { 143 if (errno == ENOMEM) 144 continue; 145 err(1, "sysctl of routing table"); 146 } 147 lim = buf + needed; 148 break; 149 } 150 151 if (pledge("stdio rpath dns", NULL) == -1) 152 err(1, "pledge"); 153 154 printf("Routing tables\n"); 155 156 if (buf) { 157 for (next = buf; next < lim; next += rtm->rtm_msglen) { 158 rtm = (struct rt_msghdr *)next; 159 if (rtm->rtm_version != RTM_VERSION) 160 continue; 161 sa = (struct sockaddr *)(next + rtm->rtm_hdrlen); 162 p_rtentry(rtm); 163 } 164 free(buf); 165 buf = NULL; 166 } 167 } 168 169 /* 170 * column widths; each followed by one space 171 * width of destination/gateway column 172 * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4 173 */ 174 #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18) 175 176 int 177 WID_DST(int af) 178 { 179 180 if (nflag) 181 switch (af) { 182 case AF_MPLS: 183 return 9; 184 case AF_INET6: 185 return 34; 186 default: 187 return 18; 188 } 189 else 190 switch (af) { 191 case AF_MPLS: 192 return 9; 193 default: 194 return 18; 195 } 196 } 197 198 /* 199 * Print header for routing table columns. 200 */ 201 void 202 pr_rthdr(int af) 203 { 204 switch (af) { 205 case PF_KEY: 206 printf("%-18s %-5s %-18s %-5s %-5s %-22s\n", 207 "Source", "Port", "Destination", 208 "Port", "Proto", "SA(Address/Proto/Type/Direction)"); 209 break; 210 case PF_MPLS: 211 printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n", 212 "In label", "Out label", "Op", "Gateway", 213 "Flags", "Refs", "Use", "Mtu", "Prio", "Interface"); 214 break; 215 default: 216 printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s %4.4s %s", 217 WID_DST(af), WID_DST(af), "Destination", 218 WID_GW(af), WID_GW(af), "Gateway", 219 "Flags", "Refs", "Use", "Mtu", "Prio", "Iface"); 220 if (verbose) 221 printf(" %s", "Label"); 222 putchar('\n'); 223 break; 224 } 225 } 226 227 static void 228 get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info) 229 { 230 int i; 231 232 for (i = 0; i < RTAX_MAX; i++) { 233 if (addrs & (1 << i)) { 234 rti_info[i] = sa; 235 sa = (struct sockaddr *)((char *)(sa) + 236 ROUNDUP(sa->sa_len)); 237 } else 238 rti_info[i] = NULL; 239 } 240 } 241 242 /* 243 * Print a routing table entry. 244 */ 245 void 246 p_rtentry(struct rt_msghdr *rtm) 247 { 248 static int old_af = -1; 249 struct sockaddr *sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen); 250 struct sockaddr *mask, *rti_info[RTAX_MAX]; 251 char ifbuf[IF_NAMESIZE]; 252 char *label; 253 254 if (sa->sa_family == AF_KEY) 255 return; 256 257 get_rtaddrs(rtm->rtm_addrs, sa, rti_info); 258 259 if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) { 260 return; 261 } 262 263 if (strlen(so_label.rtlabel.sr_label)) { 264 if (!rti_info[RTAX_LABEL]) 265 return; 266 label = ((struct sockaddr_rtlabel *)rti_info[RTAX_LABEL])-> 267 sr_label; 268 if (strcmp(label, so_label.rtlabel.sr_label)) 269 return; 270 } 271 272 if (old_af != sa->sa_family) { 273 old_af = sa->sa_family; 274 pr_family(sa->sa_family); 275 pr_rthdr(sa->sa_family); 276 } 277 278 mask = rti_info[RTAX_NETMASK]; 279 if ((sa = rti_info[RTAX_DST]) == NULL) 280 return; 281 282 p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family)); 283 p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls, 284 WID_DST(sa->sa_family)); 285 286 p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST, 287 WID_GW(sa->sa_family)); 288 289 p_flags(rtm->rtm_flags, "%-6.6s "); 290 printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt, 291 rtm->rtm_rmx.rmx_pksent); 292 if (rtm->rtm_rmx.rmx_mtu) 293 printf("%5u ", rtm->rtm_rmx.rmx_mtu); 294 else 295 printf("%5s ", "-"); 296 putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' '); 297 printf(" %2d %-5.16s", rtm->rtm_priority, 298 if_indextoname(rtm->rtm_index, ifbuf)); 299 if (verbose && rti_info[RTAX_LABEL]) 300 printf(" %s", routename(rti_info[RTAX_LABEL])); 301 putchar('\n'); 302 } 303 304 /* 305 * Print address family header before a section of the routing table. 306 */ 307 void 308 pr_family(int af) 309 { 310 char *afname; 311 312 switch (af) { 313 case AF_INET: 314 afname = "Internet"; 315 break; 316 case AF_INET6: 317 afname = "Internet6"; 318 break; 319 case PF_KEY: 320 afname = "Encap"; 321 break; 322 case AF_MPLS: 323 afname = "MPLS"; 324 break; 325 default: 326 afname = NULL; 327 break; 328 } 329 if (afname) 330 printf("\n%s:\n", afname); 331 else 332 printf("\nProtocol Family %d:\n", af); 333 } 334 335 void 336 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 337 { 338 char *cp; 339 340 switch (sa->sa_family) { 341 case AF_INET6: 342 { 343 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 344 struct in6_addr *in6 = &sa6->sin6_addr; 345 346 /* 347 * XXX: This is a special workaround for KAME kernels. 348 * sin6_scope_id field of SA should be set in the future. 349 */ 350 if (IN6_IS_ADDR_LINKLOCAL(in6) || 351 IN6_IS_ADDR_MC_LINKLOCAL(in6) || 352 IN6_IS_ADDR_MC_INTFACELOCAL(in6)) { 353 /* XXX: override is ok? */ 354 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *) 355 &in6->s6_addr[2]); 356 *(u_short *)&in6->s6_addr[2] = 0; 357 } 358 if (flags & RTF_HOST) 359 cp = routename((struct sockaddr *)sa6); 360 else 361 cp = netname((struct sockaddr *)sa6, mask); 362 break; 363 } 364 case AF_MPLS: 365 return; 366 default: 367 if ((flags & RTF_HOST) || mask == NULL) 368 cp = routename(sa); 369 else 370 cp = netname(sa, mask); 371 break; 372 } 373 if (width < 0) 374 printf("%s", cp); 375 else { 376 if (nflag) 377 printf("%-*s ", width, cp); 378 else 379 printf("%-*.*s ", width, width, cp); 380 } 381 } 382 383 static char line[HOST_NAME_MAX+1]; 384 static char domain[HOST_NAME_MAX+1]; 385 386 void 387 p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width) 388 { 389 if (in->sa_family != AF_MPLS) 390 return; 391 392 if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) { 393 printf("%-*s ", width, label_print(in)); 394 printf("%-*s ", width, label_print(NULL)); 395 } else { 396 printf("%-*s ", width, label_print(in)); 397 printf("%-*s ", width, label_print(out)); 398 } 399 400 printf("%-6s ", mpls_op(flags)); 401 } 402 403 void 404 p_flags(int f, char *format) 405 { 406 char name[33], *flags; 407 const struct bits *p = bits; 408 409 for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++) 410 if (p->b_mask & f) 411 *flags++ = p->b_val; 412 *flags = '\0'; 413 printf(format, name); 414 } 415 416 char * 417 routename(struct sockaddr *sa) 418 { 419 char *cp = NULL; 420 static int first = 1; 421 422 if (first) { 423 first = 0; 424 if (gethostname(domain, sizeof(domain)) == 0 && 425 (cp = strchr(domain, '.'))) 426 (void)strlcpy(domain, cp + 1, sizeof(domain)); 427 else 428 domain[0] = '\0'; 429 cp = NULL; 430 } 431 432 if (sa->sa_len == 0) { 433 (void)strlcpy(line, "default", sizeof(line)); 434 return (line); 435 } 436 437 switch (sa->sa_family) { 438 case AF_INET: 439 return 440 (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr)); 441 442 case AF_INET6: 443 { 444 struct sockaddr_in6 sin6; 445 446 memset(&sin6, 0, sizeof(sin6)); 447 memcpy(&sin6, sa, sa->sa_len); 448 sin6.sin6_len = sizeof(struct sockaddr_in6); 449 sin6.sin6_family = AF_INET6; 450 if (sa->sa_len == sizeof(struct sockaddr_in6) && 451 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 452 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) || 453 IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) && 454 sin6.sin6_scope_id == 0) { 455 sin6.sin6_scope_id = 456 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 457 sin6.sin6_addr.s6_addr[2] = 0; 458 sin6.sin6_addr.s6_addr[3] = 0; 459 } 460 return (routename6(&sin6)); 461 } 462 463 case AF_LINK: 464 return (link_print(sa)); 465 case AF_MPLS: 466 return (label_print(sa)); 467 case AF_UNSPEC: 468 if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) { 469 static char name[RTLABEL_LEN + 2]; 470 struct sockaddr_rtlabel *sr; 471 472 sr = (struct sockaddr_rtlabel *)sa; 473 snprintf(name, sizeof(name), "\"%s\"", sr->sr_label); 474 return (name); 475 } 476 /* FALLTHROUGH */ 477 default: 478 (void)snprintf(line, sizeof(line), "(%d) %s", 479 sa->sa_family, any_ntoa(sa)); 480 break; 481 } 482 return (line); 483 } 484 485 char * 486 routename4(in_addr_t in) 487 { 488 char *cp = NULL; 489 struct in_addr ina; 490 struct hostent *hp; 491 492 if (in == INADDR_ANY) 493 cp = "default"; 494 if (!cp && !nflag) { 495 if ((hp = gethostbyaddr((char *)&in, 496 sizeof(in), AF_INET)) != NULL) { 497 if ((cp = strchr(hp->h_name, '.')) && 498 !strcmp(cp + 1, domain)) 499 *cp = '\0'; 500 cp = hp->h_name; 501 } 502 } 503 ina.s_addr = in; 504 strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line)); 505 506 return (line); 507 } 508 509 char * 510 routename6(struct sockaddr_in6 *sin6) 511 { 512 int niflags = 0; 513 514 if (nflag) 515 niflags |= NI_NUMERICHOST; 516 else 517 niflags |= NI_NOFQDN; 518 519 if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len, 520 line, sizeof(line), NULL, 0, niflags) != 0) 521 strncpy(line, "invalid", sizeof(line)); 522 523 return (line); 524 } 525 526 /* 527 * Return the name of the network whose address is given. 528 * The address is assumed to be that of a net or subnet, not a host. 529 */ 530 char * 531 netname4(in_addr_t in, struct sockaddr_in *maskp) 532 { 533 char *cp = NULL; 534 struct netent *np = NULL; 535 in_addr_t mask; 536 int mbits; 537 538 in = ntohl(in); 539 mask = maskp && maskp->sin_len != 0 ? ntohl(maskp->sin_addr.s_addr) : 0; 540 if (!nflag && in != INADDR_ANY) { 541 if ((np = getnetbyaddr(in, AF_INET)) != NULL) 542 cp = np->n_name; 543 } 544 if (in == INADDR_ANY && mask == INADDR_ANY) 545 cp = "default"; 546 mbits = mask ? 33 - ffs(mask) : 0; 547 if (cp) 548 strlcpy(line, cp, sizeof(line)); 549 #define C(x) ((x) & 0xff) 550 else if (mbits < 9) 551 snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits); 552 else if (mbits < 17) 553 snprintf(line, sizeof(line), "%u.%u/%d", 554 C(in >> 24) , C(in >> 16), mbits); 555 else if (mbits < 25) 556 snprintf(line, sizeof(line), "%u.%u.%u/%d", 557 C(in >> 24), C(in >> 16), C(in >> 8), mbits); 558 else 559 snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24), 560 C(in >> 16), C(in >> 8), C(in), mbits); 561 #undef C 562 return (line); 563 } 564 565 char * 566 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 567 { 568 struct sockaddr_in6 sin6; 569 u_char *p; 570 int masklen, final = 0, illegal = 0; 571 int i, lim, flag, error; 572 char hbuf[NI_MAXHOST]; 573 574 sin6 = *sa6; 575 576 flag = 0; 577 masklen = 0; 578 if (mask) { 579 lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr); 580 lim = lim < (int)sizeof(struct in6_addr) ? 581 lim : (int)sizeof(struct in6_addr); 582 for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) { 583 if (final && *p) { 584 illegal++; 585 sin6.sin6_addr.s6_addr[i++] = 0x00; 586 continue; 587 } 588 589 switch (*p & 0xff) { 590 case 0xff: 591 masklen += 8; 592 break; 593 case 0xfe: 594 masklen += 7; 595 final++; 596 break; 597 case 0xfc: 598 masklen += 6; 599 final++; 600 break; 601 case 0xf8: 602 masklen += 5; 603 final++; 604 break; 605 case 0xf0: 606 masklen += 4; 607 final++; 608 break; 609 case 0xe0: 610 masklen += 3; 611 final++; 612 break; 613 case 0xc0: 614 masklen += 2; 615 final++; 616 break; 617 case 0x80: 618 masklen += 1; 619 final++; 620 break; 621 case 0x00: 622 final++; 623 break; 624 default: 625 final++; 626 illegal++; 627 break; 628 } 629 630 if (!illegal) 631 sin6.sin6_addr.s6_addr[i++] &= *p; 632 else 633 sin6.sin6_addr.s6_addr[i++] = 0x00; 634 } 635 while (i < (int)sizeof(struct in6_addr)) 636 sin6.sin6_addr.s6_addr[i++] = 0x00; 637 } else 638 masklen = 128; 639 640 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) 641 return ("default"); 642 643 if (illegal) 644 warnx("illegal prefixlen"); 645 646 if (nflag) 647 flag |= NI_NUMERICHOST; 648 error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 649 hbuf, sizeof(hbuf), NULL, 0, flag); 650 if (error) 651 snprintf(hbuf, sizeof(hbuf), "invalid"); 652 653 snprintf(line, sizeof(line), "%s/%d", hbuf, masklen); 654 return (line); 655 } 656 657 /* 658 * Return the name of the network whose address is given. 659 * The address is assumed to be that of a net or subnet, not a host. 660 */ 661 char * 662 netname(struct sockaddr *sa, struct sockaddr *mask) 663 { 664 switch (sa->sa_family) { 665 case AF_INET: 666 return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr, 667 (struct sockaddr_in *)mask); 668 case AF_INET6: 669 return netname6((struct sockaddr_in6 *)sa, 670 (struct sockaddr_in6 *)mask); 671 case AF_LINK: 672 return (link_print(sa)); 673 case AF_MPLS: 674 return (label_print(sa)); 675 default: 676 snprintf(line, sizeof(line), "af %d: %s", 677 sa->sa_family, any_ntoa(sa)); 678 break; 679 } 680 return (line); 681 } 682 683 static const char hexlist[] = "0123456789abcdef"; 684 685 char * 686 any_ntoa(const struct sockaddr *sa) 687 { 688 static char obuf[240]; 689 const char *in = sa->sa_data; 690 char *out = obuf; 691 int len = sa->sa_len - offsetof(struct sockaddr, sa_data); 692 693 *out++ = 'Q'; 694 do { 695 *out++ = hexlist[(*in >> 4) & 15]; 696 *out++ = hexlist[(*in++) & 15]; 697 *out++ = '.'; 698 } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]); 699 out[-1] = '\0'; 700 return (obuf); 701 } 702 703 char * 704 link_print(struct sockaddr *sa) 705 { 706 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 707 u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen; 708 709 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 710 sdl->sdl_slen == 0) { 711 (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index); 712 return (line); 713 } 714 switch (sdl->sdl_type) { 715 case IFT_ETHER: 716 case IFT_CARP: 717 return (ether_ntoa((struct ether_addr *)lla)); 718 default: 719 return (link_ntoa(sdl)); 720 } 721 } 722 723 char * 724 mpls_op(u_int32_t type) 725 { 726 switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) { 727 case MPLS_OP_LOCAL: 728 return ("LOCAL"); 729 case MPLS_OP_POP: 730 return ("POP"); 731 case MPLS_OP_SWAP: 732 return ("SWAP"); 733 case MPLS_OP_PUSH: 734 return ("PUSH"); 735 default: 736 return ("?"); 737 } 738 } 739 740 char * 741 label_print(struct sockaddr *sa) 742 { 743 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 744 745 if (smpls) 746 (void)snprintf(line, sizeof(line), "%u", 747 ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET); 748 else 749 (void)snprintf(line, sizeof(line), "-"); 750 751 return (line); 752 } 753