1 /* $OpenBSD: show.c,v 1.58 2021/01/24 08:58:50 florian 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 "netstat.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 p_rtentry(struct rt_msghdr *); 101 void pr_family(int); 102 void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int); 103 void p_sockaddr_mpls(struct sockaddr *, struct sockaddr *, int, int); 104 void p_flags(int, char *); 105 char *routename4(in_addr_t); 106 char *routename6(struct sockaddr_in6 *); 107 108 size_t 109 get_sysctl(const int *mib, u_int mcnt, char **buf) 110 { 111 size_t needed; 112 113 while (1) { 114 if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1) 115 err(1, "sysctl-estimate"); 116 if (needed == 0) 117 break; 118 if ((*buf = realloc(*buf, needed)) == NULL) 119 err(1, NULL); 120 if (sysctl(mib, mcnt, *buf, &needed, NULL, 0) == -1) { 121 if (errno == ENOMEM) 122 continue; 123 err(1, "sysctl"); 124 } 125 break; 126 } 127 128 return needed; 129 } 130 131 /* 132 * Print routing tables. 133 */ 134 void 135 p_rttables(int af, u_int tableid) 136 { 137 struct rt_msghdr *rtm; 138 char *buf = NULL, *next, *lim = NULL; 139 size_t needed; 140 int mib[7], mcnt; 141 142 mib[0] = CTL_NET; 143 mib[1] = PF_ROUTE; 144 mib[2] = 0; 145 mib[3] = af; 146 mib[4] = NET_RT_DUMP; 147 mib[5] = 0; 148 mib[6] = tableid; 149 mcnt = 7; 150 151 needed = get_sysctl(mib, mcnt, &buf); 152 lim = buf + needed; 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 p_rtentry(rtm); 162 } 163 } 164 free(buf); 165 } 166 167 /* 168 * column widths; each followed by one space 169 * width of destination/gateway column 170 * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4 171 */ 172 #define WID_GW(af) ((af) == AF_INET6 ? 30 : 18) 173 174 int 175 WID_DST(int af) 176 { 177 178 switch (af) { 179 case AF_MPLS: 180 return 9; 181 case AF_INET6: 182 return 34; 183 default: 184 return 18; 185 } 186 } 187 188 /* 189 * Print header for routing table columns. 190 */ 191 void 192 pr_rthdr(int af, int Aflag) 193 { 194 if (Aflag) 195 printf("%-*.*s ", PLEN, PLEN, "Address"); 196 switch (af) { 197 case PF_KEY: 198 printf("%-18s %-5s %-18s %-5s %-5s %-22s\n", 199 "Source", "Port", "Destination", 200 "Port", "Proto", "SA(Address/Proto/Type/Direction)"); 201 break; 202 case PF_MPLS: 203 printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n", 204 "In label", "Out label", "Op", "Gateway", 205 "Flags", "Refs", "Use", "Mtu", "Prio", "Interface"); 206 break; 207 default: 208 printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s %4.4s %s", 209 WID_DST(af), WID_DST(af), "Destination", 210 WID_GW(af), WID_GW(af), "Gateway", 211 "Flags", "Refs", "Use", "Mtu", "Prio", "Iface"); 212 if (vflag && !Aflag) 213 printf(" %s", "Label"); 214 putchar('\n'); 215 break; 216 } 217 } 218 219 static void 220 get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info) 221 { 222 int i; 223 224 for (i = 0; i < RTAX_MAX; i++) { 225 if (addrs & (1 << i)) { 226 rti_info[i] = sa; 227 sa = (struct sockaddr *)((char *)(sa) + 228 ROUNDUP(sa->sa_len)); 229 } else 230 rti_info[i] = NULL; 231 } 232 } 233 234 /* 235 * Print a routing table entry. 236 */ 237 void 238 p_rtentry(struct rt_msghdr *rtm) 239 { 240 static int old_af = -1; 241 struct sockaddr *sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen); 242 struct sockaddr *mask, *rti_info[RTAX_MAX]; 243 char ifbuf[IF_NAMESIZE]; 244 245 if (sa->sa_family == AF_KEY) 246 return; 247 248 get_rtaddrs(rtm->rtm_addrs, sa, rti_info); 249 250 if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) { 251 return; 252 } 253 if (old_af != sa->sa_family) { 254 old_af = sa->sa_family; 255 pr_family(sa->sa_family); 256 pr_rthdr(sa->sa_family, 0); 257 } 258 259 mask = rti_info[RTAX_NETMASK]; 260 if ((sa = rti_info[RTAX_DST]) == NULL) 261 return; 262 263 p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family)); 264 p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls, 265 WID_DST(sa->sa_family)); 266 267 p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST, 268 WID_GW(sa->sa_family)); 269 270 p_flags(rtm->rtm_flags, "%-6.6s "); 271 printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt, 272 rtm->rtm_rmx.rmx_pksent); 273 if (rtm->rtm_rmx.rmx_mtu) 274 printf("%5u ", rtm->rtm_rmx.rmx_mtu); 275 else 276 printf("%5s ", "-"); 277 putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' '); 278 printf(" %2d %-5.16s", rtm->rtm_priority, 279 if_indextoname(rtm->rtm_index, ifbuf)); 280 if (vflag && rti_info[RTAX_LABEL]) 281 printf(" %s", ((struct sockaddr_rtlabel *) 282 rti_info[RTAX_LABEL])->sr_label); 283 putchar('\n'); 284 } 285 286 /* 287 * Print address family header before a section of the routing table. 288 */ 289 void 290 pr_family(int af) 291 { 292 char *afname; 293 294 switch (af) { 295 case AF_INET: 296 afname = "Internet"; 297 break; 298 case AF_INET6: 299 afname = "Internet6"; 300 break; 301 case PF_KEY: 302 afname = "Encap"; 303 break; 304 case AF_MPLS: 305 afname = "MPLS"; 306 break; 307 default: 308 afname = NULL; 309 break; 310 } 311 if (afname) 312 printf("\n%s:\n", afname); 313 else 314 printf("\nProtocol Family %d:\n", af); 315 } 316 317 void 318 p_addr(struct sockaddr *sa, struct sockaddr *mask, int flags) 319 { 320 p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family)); 321 } 322 323 void 324 p_gwaddr(struct sockaddr *sa, int af) 325 { 326 p_sockaddr(sa, 0, RTF_HOST, WID_GW(af)); 327 } 328 329 void 330 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 331 { 332 char *cp; 333 334 switch (sa->sa_family) { 335 case AF_INET6: 336 { 337 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 338 #ifdef __KAME__ 339 struct in6_addr *in6 = &sa6->sin6_addr; 340 341 /* 342 * XXX: This is a special workaround for KAME kernels. 343 * sin6_scope_id field of SA should be set in the future. 344 */ 345 if ((IN6_IS_ADDR_LINKLOCAL(in6) || 346 IN6_IS_ADDR_MC_LINKLOCAL(in6) || 347 IN6_IS_ADDR_MC_INTFACELOCAL(in6)) && 348 sa6->sin6_scope_id == 0) { 349 /* XXX: override is ok? */ 350 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *) 351 &in6->s6_addr[2]); 352 *(u_short *)&in6->s6_addr[2] = 0; 353 } 354 #endif 355 if (flags & RTF_HOST) 356 cp = routename((struct sockaddr *)sa6); 357 else 358 cp = netname((struct sockaddr *)sa6, mask); 359 break; 360 } 361 case AF_MPLS: 362 return; 363 default: 364 if ((flags & RTF_HOST) || mask == NULL) 365 cp = routename(sa); 366 else 367 cp = netname(sa, mask); 368 break; 369 } 370 if (width < 0) 371 printf("%s", cp); 372 else { 373 if (nflag) 374 printf("%-*s ", width, cp); 375 else 376 printf("%-*.*s ", width, width, cp); 377 } 378 } 379 380 static char line[HOST_NAME_MAX+1]; 381 static char domain[HOST_NAME_MAX+1]; 382 383 void 384 p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width) 385 { 386 if (in->sa_family != AF_MPLS) 387 return; 388 389 if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) { 390 printf("%-*s ", width, label_print(in)); 391 printf("%-*s ", width, label_print(NULL)); 392 } else { 393 printf("%-*s ", width, label_print(in)); 394 printf("%-*s ", width, label_print(out)); 395 } 396 397 printf("%-6s ", mpls_op(flags)); 398 } 399 400 void 401 p_flags(int f, char *format) 402 { 403 char name[33], *flags; 404 const struct bits *p = bits; 405 406 for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++) 407 if (p->b_mask & f) 408 *flags++ = p->b_val; 409 *flags = '\0'; 410 printf(format, name); 411 } 412 413 char * 414 routename(struct sockaddr *sa) 415 { 416 char *cp = NULL; 417 static int first = 1; 418 419 if (first) { 420 first = 0; 421 if (gethostname(domain, sizeof(domain)) == 0 && 422 (cp = strchr(domain, '.'))) 423 (void)strlcpy(domain, cp + 1, sizeof(domain)); 424 else 425 domain[0] = '\0'; 426 cp = NULL; 427 } 428 429 if (sa->sa_len == 0) { 430 (void)strlcpy(line, "default", sizeof(line)); 431 return (line); 432 } 433 434 switch (sa->sa_family) { 435 case AF_INET: 436 return 437 (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr)); 438 439 case AF_INET6: 440 { 441 struct sockaddr_in6 sin6; 442 443 memset(&sin6, 0, sizeof(sin6)); 444 memcpy(&sin6, sa, sa->sa_len); 445 sin6.sin6_family = AF_INET6; 446 #ifdef __KAME__ 447 if (sa->sa_len == sizeof(struct sockaddr_in6) && 448 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 449 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) || 450 IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) && 451 sin6.sin6_scope_id == 0) { 452 sin6.sin6_scope_id = 453 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 454 sin6.sin6_addr.s6_addr[2] = 0; 455 sin6.sin6_addr.s6_addr[3] = 0; 456 } 457 #endif 458 return (routename6(&sin6)); 459 } 460 461 case AF_LINK: 462 return (link_print(sa)); 463 case AF_MPLS: 464 return (label_print(sa)); 465 case AF_UNSPEC: 466 if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) { 467 static char name[RTLABEL_LEN]; 468 struct sockaddr_rtlabel *sr; 469 470 sr = (struct sockaddr_rtlabel *)sa; 471 (void)strlcpy(name, sr->sr_label, sizeof(name)); 472 return (name); 473 } 474 /* FALLTHROUGH */ 475 default: 476 (void)snprintf(line, sizeof(line), "(%d) %s", 477 sa->sa_family, any_ntoa(sa)); 478 break; 479 } 480 return (line); 481 } 482 483 char * 484 routename4(in_addr_t in) 485 { 486 char *cp = NULL; 487 struct in_addr ina; 488 struct hostent *hp; 489 490 if (!cp && !nflag) { 491 if ((hp = gethostbyaddr((char *)&in, 492 sizeof(in), AF_INET)) != NULL) { 493 if ((cp = strchr(hp->h_name, '.')) && 494 !strcmp(cp + 1, domain)) 495 *cp = '\0'; 496 cp = hp->h_name; 497 } 498 } 499 ina.s_addr = in; 500 strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line)); 501 502 return (line); 503 } 504 505 char * 506 routename6(struct sockaddr_in6 *sin6) 507 { 508 int niflags = 0; 509 510 if (nflag) 511 niflags |= NI_NUMERICHOST; 512 else 513 niflags |= NI_NOFQDN; 514 515 if (getnameinfo((struct sockaddr *)sin6, sizeof(*sin6), 516 line, sizeof(line), NULL, 0, niflags) != 0) 517 strncpy(line, "invalid", sizeof(line)); 518 519 return (line); 520 } 521 522 /* 523 * Return the name of the network whose address is given. 524 * The address is assumed to be that of a net or subnet, not a host. 525 */ 526 char * 527 netname4(in_addr_t in, in_addr_t mask) 528 { 529 int mbits; 530 531 in = ntohl(in); 532 mask = ntohl(mask); 533 mbits = mask ? 33 - ffs(mask) : 0; 534 if (in == INADDR_ANY && mask == INADDR_ANY) 535 strlcpy(line, "default", sizeof(line)); 536 #define C(x) ((x) & 0xff) 537 else if (mbits < 9) 538 snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits); 539 else if (mbits < 17) 540 snprintf(line, sizeof(line), "%u.%u/%d", 541 C(in >> 24) , C(in >> 16), mbits); 542 else if (mbits < 25) 543 snprintf(line, sizeof(line), "%u.%u.%u/%d", 544 C(in >> 24), C(in >> 16), C(in >> 8), mbits); 545 else 546 snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24), 547 C(in >> 16), C(in >> 8), C(in), mbits); 548 #undef C 549 return (line); 550 } 551 552 char * 553 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 554 { 555 struct sockaddr_in6 sin6; 556 u_char *p; 557 int masklen, final = 0, illegal = 0; 558 int i, lim, flag, error; 559 char hbuf[NI_MAXHOST]; 560 561 sin6 = *sa6; 562 563 flag = 0; 564 masklen = 0; 565 if (mask) { 566 lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr); 567 lim = lim < (int)sizeof(struct in6_addr) ? 568 lim : (int)sizeof(struct in6_addr); 569 for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) { 570 if (final && *p) { 571 illegal++; 572 sin6.sin6_addr.s6_addr[i++] = 0x00; 573 continue; 574 } 575 576 switch (*p & 0xff) { 577 case 0xff: 578 masklen += 8; 579 break; 580 case 0xfe: 581 masklen += 7; 582 final++; 583 break; 584 case 0xfc: 585 masklen += 6; 586 final++; 587 break; 588 case 0xf8: 589 masklen += 5; 590 final++; 591 break; 592 case 0xf0: 593 masklen += 4; 594 final++; 595 break; 596 case 0xe0: 597 masklen += 3; 598 final++; 599 break; 600 case 0xc0: 601 masklen += 2; 602 final++; 603 break; 604 case 0x80: 605 masklen += 1; 606 final++; 607 break; 608 case 0x00: 609 final++; 610 break; 611 default: 612 final++; 613 illegal++; 614 break; 615 } 616 617 if (!illegal) 618 sin6.sin6_addr.s6_addr[i++] &= *p; 619 else 620 sin6.sin6_addr.s6_addr[i++] = 0x00; 621 } 622 while (i < (int)sizeof(struct in6_addr)) 623 sin6.sin6_addr.s6_addr[i++] = 0x00; 624 } else 625 masklen = 128; 626 627 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) 628 return ("default"); 629 630 if (illegal) 631 warnx("illegal prefixlen"); 632 633 if (nflag) 634 flag |= NI_NUMERICHOST; 635 error = getnameinfo((struct sockaddr *)&sin6, sizeof(sin6), 636 hbuf, sizeof(hbuf), NULL, 0, flag); 637 if (error) 638 snprintf(hbuf, sizeof(hbuf), "invalid"); 639 640 snprintf(line, sizeof(line), "%s/%d", hbuf, masklen); 641 return (line); 642 } 643 644 /* 645 * Return the name of the network whose address is given. 646 * The address is assumed to be that of a net or subnet, not a host. 647 */ 648 char * 649 netname(struct sockaddr *sa, struct sockaddr *mask) 650 { 651 switch (sa->sa_family) { 652 case AF_INET: 653 return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr, 654 mask->sa_len == 0 ? 0 : 655 ((struct sockaddr_in *)mask)->sin_addr.s_addr); 656 case AF_INET6: 657 return netname6((struct sockaddr_in6 *)sa, 658 (struct sockaddr_in6 *)mask); 659 case AF_LINK: 660 return (link_print(sa)); 661 case AF_MPLS: 662 return (label_print(sa)); 663 default: 664 snprintf(line, sizeof(line), "af %d: %s", 665 sa->sa_family, any_ntoa(sa)); 666 break; 667 } 668 return (line); 669 } 670 671 static const char hexlist[] = "0123456789abcdef"; 672 673 char * 674 any_ntoa(const struct sockaddr *sa) 675 { 676 static char obuf[240]; 677 const char *in = sa->sa_data; 678 char *out = obuf; 679 int len = sa->sa_len - offsetof(struct sockaddr, sa_data); 680 681 *out++ = 'Q'; 682 do { 683 *out++ = hexlist[(*in >> 4) & 15]; 684 *out++ = hexlist[(*in++) & 15]; 685 *out++ = '.'; 686 } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]); 687 out[-1] = '\0'; 688 return (obuf); 689 } 690 691 char * 692 link_print(struct sockaddr *sa) 693 { 694 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 695 u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen; 696 697 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 698 sdl->sdl_slen == 0) { 699 (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index); 700 return (line); 701 } 702 switch (sdl->sdl_type) { 703 case IFT_ETHER: 704 case IFT_CARP: 705 return (ether_ntoa((struct ether_addr *)lla)); 706 default: 707 return (link_ntoa(sdl)); 708 } 709 } 710 711 char * 712 mpls_op(u_int32_t type) 713 { 714 switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) { 715 case MPLS_OP_LOCAL: 716 return ("LOCAL"); 717 case MPLS_OP_POP: 718 return ("POP"); 719 case MPLS_OP_SWAP: 720 return ("SWAP"); 721 case MPLS_OP_PUSH: 722 return ("PUSH"); 723 default: 724 return ("?"); 725 } 726 } 727 728 char * 729 label_print(struct sockaddr *sa) 730 { 731 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 732 733 if (smpls) 734 (void)snprintf(line, sizeof(line), "%u", 735 ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET); 736 else 737 (void)snprintf(line, sizeof(line), "-"); 738 739 return (line); 740 } 741