1 /* $OpenBSD: show.c,v 1.114 2018/08/31 15:18:02 yasuoka 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_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 char *netname4(in_addr_t, struct sockaddr_in *); 108 char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 109 110 size_t 111 get_sysctl(const int *mib, u_int mcnt, char **buf) 112 { 113 size_t needed; 114 115 while (1) { 116 if (sysctl(mib, mcnt, NULL, &needed, NULL, 0) == -1) 117 err(1, "sysctl-estimate"); 118 if (needed == 0) 119 break; 120 if ((*buf = realloc(*buf, needed)) == NULL) 121 err(1, NULL); 122 if (sysctl(mib, mcnt, *buf, &needed, NULL, 0) == -1) { 123 if (errno == ENOMEM) 124 continue; 125 err(1, "sysctl"); 126 } 127 break; 128 } 129 130 return needed; 131 } 132 133 /* 134 * Print routing tables. 135 */ 136 void 137 p_rttables(int af, u_int tableid, char prio) 138 { 139 struct rt_msghdr *rtm; 140 char *buf = NULL, *next, *lim = NULL; 141 size_t needed; 142 int mib[7], mcnt; 143 144 mib[0] = CTL_NET; 145 mib[1] = PF_ROUTE; 146 mib[2] = 0; 147 mib[3] = af; 148 mib[4] = NET_RT_DUMP; 149 mib[5] = prio; 150 mib[6] = tableid; 151 mcnt = 7; 152 153 needed = get_sysctl(mib, mcnt, &buf); 154 lim = buf + needed; 155 156 if (pledge("stdio dns", NULL) == -1) 157 err(1, "pledge"); 158 159 printf("Routing tables\n"); 160 161 if (buf) { 162 for (next = buf; next < lim; next += rtm->rtm_msglen) { 163 rtm = (struct rt_msghdr *)next; 164 if (rtm->rtm_version != RTM_VERSION) 165 continue; 166 p_rtentry(rtm); 167 } 168 } 169 free(buf); 170 } 171 172 /* 173 * column widths; each followed by one space 174 * width of destination/gateway column 175 * strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4 176 */ 177 #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18) 178 179 int 180 WID_DST(int af) 181 { 182 183 if (nflag) 184 switch (af) { 185 case AF_MPLS: 186 return 9; 187 case AF_INET6: 188 return 34; 189 default: 190 return 18; 191 } 192 else 193 switch (af) { 194 case AF_MPLS: 195 return 9; 196 default: 197 return 18; 198 } 199 } 200 201 /* 202 * Print header for routing table columns. 203 */ 204 void 205 pr_rthdr(int af) 206 { 207 switch (af) { 208 case PF_KEY: 209 printf("%-18s %-5s %-18s %-5s %-5s %-22s\n", 210 "Source", "Port", "Destination", 211 "Port", "Proto", "SA(Address/Proto/Type/Direction)"); 212 break; 213 case PF_MPLS: 214 printf("%-9s %-9s %-6s %-18s %-6.6s %5.5s %8.8s %5.5s %4.4s %s\n", 215 "In label", "Out label", "Op", "Gateway", 216 "Flags", "Refs", "Use", "Mtu", "Prio", "Interface"); 217 break; 218 default: 219 printf("%-*.*s %-*.*s %-6.6s %5.5s %8.8s %5.5s %4.4s %s", 220 WID_DST(af), WID_DST(af), "Destination", 221 WID_GW(af), WID_GW(af), "Gateway", 222 "Flags", "Refs", "Use", "Mtu", "Prio", "Iface"); 223 if (verbose) 224 printf(" %s", "Label"); 225 putchar('\n'); 226 break; 227 } 228 } 229 230 void 231 get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info) 232 { 233 int i; 234 235 for (i = 0; i < RTAX_MAX; i++) { 236 if (addrs & (1 << i)) { 237 rti_info[i] = sa; 238 sa = (struct sockaddr *)((char *)(sa) + 239 ROUNDUP(sa->sa_len)); 240 } else 241 rti_info[i] = NULL; 242 } 243 } 244 245 /* 246 * Print a routing table entry. 247 */ 248 void 249 p_rtentry(struct rt_msghdr *rtm) 250 { 251 static int old_af = -1; 252 struct sockaddr *sa = (struct sockaddr *)((char *)rtm + rtm->rtm_hdrlen); 253 struct sockaddr *mask, *rti_info[RTAX_MAX]; 254 char ifbuf[IF_NAMESIZE]; 255 char *label; 256 257 if (sa->sa_family == AF_KEY) 258 return; 259 260 get_rtaddrs(rtm->rtm_addrs, sa, rti_info); 261 262 if (Fflag && rti_info[RTAX_GATEWAY]->sa_family != sa->sa_family) { 263 return; 264 } 265 266 if (strlen(so_label.rtlabel.sr_label)) { 267 if (!rti_info[RTAX_LABEL]) 268 return; 269 label = ((struct sockaddr_rtlabel *)rti_info[RTAX_LABEL])-> 270 sr_label; 271 if (strcmp(label, so_label.rtlabel.sr_label)) 272 return; 273 } 274 275 if (old_af != sa->sa_family) { 276 old_af = sa->sa_family; 277 pr_family(sa->sa_family); 278 pr_rthdr(sa->sa_family); 279 } 280 281 mask = rti_info[RTAX_NETMASK]; 282 if ((sa = rti_info[RTAX_DST]) == NULL) 283 return; 284 285 p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family)); 286 p_sockaddr_mpls(sa, rti_info[RTAX_SRC], rtm->rtm_mpls, 287 WID_DST(sa->sa_family)); 288 289 p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST, 290 WID_GW(sa->sa_family)); 291 292 p_flags(rtm->rtm_flags, "%-6.6s "); 293 printf("%5u %8llu ", rtm->rtm_rmx.rmx_refcnt, 294 rtm->rtm_rmx.rmx_pksent); 295 if (rtm->rtm_rmx.rmx_mtu) 296 printf("%5u ", rtm->rtm_rmx.rmx_mtu); 297 else 298 printf("%5s ", "-"); 299 putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' '); 300 printf(" %2d %-5.16s", rtm->rtm_priority, 301 if_indextoname(rtm->rtm_index, ifbuf)); 302 if (verbose && rti_info[RTAX_LABEL]) 303 printf(" %s", routename(rti_info[RTAX_LABEL])); 304 putchar('\n'); 305 } 306 307 /* 308 * Print address family header before a section of the routing table. 309 */ 310 void 311 pr_family(int af) 312 { 313 char *afname; 314 315 switch (af) { 316 case AF_INET: 317 afname = "Internet"; 318 break; 319 case AF_INET6: 320 afname = "Internet6"; 321 break; 322 case PF_KEY: 323 afname = "Encap"; 324 break; 325 case AF_MPLS: 326 afname = "MPLS"; 327 break; 328 default: 329 afname = NULL; 330 break; 331 } 332 if (afname) 333 printf("\n%s:\n", afname); 334 else 335 printf("\nProtocol Family %d:\n", af); 336 } 337 338 void 339 p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 340 { 341 char *cp; 342 343 switch (sa->sa_family) { 344 case AF_INET6: 345 { 346 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 347 struct in6_addr *in6 = &sa6->sin6_addr; 348 349 /* 350 * XXX: This is a special workaround for KAME kernels. 351 * sin6_scope_id field of SA should be set in the future. 352 */ 353 if (IN6_IS_ADDR_LINKLOCAL(in6) || 354 IN6_IS_ADDR_MC_LINKLOCAL(in6) || 355 IN6_IS_ADDR_MC_INTFACELOCAL(in6)) { 356 /* XXX: override is ok? */ 357 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *) 358 &in6->s6_addr[2]); 359 *(u_short *)&in6->s6_addr[2] = 0; 360 } 361 if (flags & RTF_HOST) 362 cp = routename((struct sockaddr *)sa6); 363 else 364 cp = netname((struct sockaddr *)sa6, mask); 365 break; 366 } 367 case AF_MPLS: 368 return; 369 default: 370 if ((flags & RTF_HOST) || mask == NULL) 371 cp = routename(sa); 372 else 373 cp = netname(sa, mask); 374 break; 375 } 376 if (width < 0) 377 printf("%s", cp); 378 else { 379 if (nflag) 380 printf("%-*s ", width, cp); 381 else 382 printf("%-*.*s ", width, width, cp); 383 } 384 } 385 386 static char line[HOST_NAME_MAX+1]; 387 static char domain[HOST_NAME_MAX+1]; 388 389 void 390 p_sockaddr_mpls(struct sockaddr *in, struct sockaddr *out, int flags, int width) 391 { 392 if (in->sa_family != AF_MPLS) 393 return; 394 395 if (flags & MPLS_OP_POP || flags == MPLS_OP_LOCAL) { 396 printf("%-*s ", width, label_print(in)); 397 printf("%-*s ", width, label_print(NULL)); 398 } else { 399 printf("%-*s ", width, label_print(in)); 400 printf("%-*s ", width, label_print(out)); 401 } 402 403 printf("%-6s ", mpls_op(flags)); 404 } 405 406 void 407 p_flags(int f, char *format) 408 { 409 char name[33], *flags; 410 const struct bits *p = bits; 411 412 for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++) 413 if (p->b_mask & f) 414 *flags++ = p->b_val; 415 *flags = '\0'; 416 printf(format, name); 417 } 418 419 char * 420 routename(struct sockaddr *sa) 421 { 422 char *cp = NULL; 423 static int first = 1; 424 425 if (first) { 426 first = 0; 427 if (gethostname(domain, sizeof(domain)) == 0 && 428 (cp = strchr(domain, '.'))) 429 (void)strlcpy(domain, cp + 1, sizeof(domain)); 430 else 431 domain[0] = '\0'; 432 cp = NULL; 433 } 434 435 if (sa->sa_len == 0) { 436 (void)strlcpy(line, "default", sizeof(line)); 437 return (line); 438 } 439 440 switch (sa->sa_family) { 441 case AF_INET: 442 return 443 (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr)); 444 445 case AF_INET6: 446 { 447 struct sockaddr_in6 sin6; 448 449 memset(&sin6, 0, sizeof(sin6)); 450 memcpy(&sin6, sa, sa->sa_len); 451 sin6.sin6_len = sizeof(struct sockaddr_in6); 452 sin6.sin6_family = AF_INET6; 453 if (sa->sa_len == sizeof(struct sockaddr_in6) && 454 (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) || 455 IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr) || 456 IN6_IS_ADDR_MC_INTFACELOCAL(&sin6.sin6_addr)) && 457 sin6.sin6_scope_id == 0) { 458 sin6.sin6_scope_id = 459 ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]); 460 sin6.sin6_addr.s6_addr[2] = 0; 461 sin6.sin6_addr.s6_addr[3] = 0; 462 } 463 return (routename6(&sin6)); 464 } 465 466 case AF_LINK: 467 return (link_print(sa)); 468 case AF_MPLS: 469 return (label_print(sa)); 470 case AF_UNSPEC: 471 if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) { 472 static char name[RTLABEL_LEN + 2]; 473 struct sockaddr_rtlabel *sr; 474 475 sr = (struct sockaddr_rtlabel *)sa; 476 snprintf(name, sizeof(name), "\"%s\"", sr->sr_label); 477 return (name); 478 } 479 /* FALLTHROUGH */ 480 default: 481 (void)snprintf(line, sizeof(line), "(%d) %s", 482 sa->sa_family, any_ntoa(sa)); 483 break; 484 } 485 return (line); 486 } 487 488 char * 489 routename4(in_addr_t in) 490 { 491 char *cp = NULL; 492 struct in_addr ina; 493 struct hostent *hp; 494 495 if (!cp && !nflag) { 496 if ((hp = gethostbyaddr((char *)&in, 497 sizeof(in), AF_INET)) != NULL) { 498 if ((cp = strchr(hp->h_name, '.')) && 499 !strcmp(cp + 1, domain)) 500 *cp = '\0'; 501 cp = hp->h_name; 502 } 503 } 504 ina.s_addr = in; 505 strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line)); 506 507 return (line); 508 } 509 510 char * 511 routename6(struct sockaddr_in6 *sin6) 512 { 513 int niflags = 0; 514 515 if (nflag) 516 niflags |= NI_NUMERICHOST; 517 else 518 niflags |= NI_NOFQDN; 519 520 if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len, 521 line, sizeof(line), NULL, 0, niflags) != 0) 522 strncpy(line, "invalid", sizeof(line)); 523 524 return (line); 525 } 526 527 char * 528 netname4(in_addr_t in, struct sockaddr_in *maskp) 529 { 530 char *cp = NULL; 531 struct hostent *hp; 532 in_addr_t mask; 533 int mbits; 534 535 mask = maskp && maskp->sin_len != 0 ? ntohl(maskp->sin_addr.s_addr) : 0; 536 if (!nflag && in != INADDR_ANY) { 537 if ((hp = gethostbyaddr((char *)&in, 538 sizeof(in), AF_INET)) != NULL) 539 cp = hp->h_name; 540 } 541 if (in == INADDR_ANY && mask == INADDR_ANY) 542 cp = "default"; 543 mbits = mask ? 33 - ffs(mask) : 0; 544 in = ntohl(in); 545 if (cp) 546 strlcpy(line, cp, sizeof(line)); 547 #define C(x) ((x) & 0xff) 548 else if (mbits < 9) 549 snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits); 550 else if (mbits < 17) 551 snprintf(line, sizeof(line), "%u.%u/%d", 552 C(in >> 24) , C(in >> 16), mbits); 553 else if (mbits < 25) 554 snprintf(line, sizeof(line), "%u.%u.%u/%d", 555 C(in >> 24), C(in >> 16), C(in >> 8), mbits); 556 else 557 snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24), 558 C(in >> 16), C(in >> 8), C(in), mbits); 559 #undef C 560 return (line); 561 } 562 563 char * 564 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 565 { 566 struct sockaddr_in6 sin6; 567 u_char *p; 568 int masklen, final = 0, illegal = 0; 569 int i, lim, flag, error; 570 char hbuf[NI_MAXHOST]; 571 572 sin6 = *sa6; 573 574 flag = 0; 575 masklen = 0; 576 if (mask) { 577 lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr); 578 lim = lim < (int)sizeof(struct in6_addr) ? 579 lim : (int)sizeof(struct in6_addr); 580 for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) { 581 if (final && *p) { 582 illegal++; 583 sin6.sin6_addr.s6_addr[i++] = 0x00; 584 continue; 585 } 586 587 switch (*p & 0xff) { 588 case 0xff: 589 masklen += 8; 590 break; 591 case 0xfe: 592 masklen += 7; 593 final++; 594 break; 595 case 0xfc: 596 masklen += 6; 597 final++; 598 break; 599 case 0xf8: 600 masklen += 5; 601 final++; 602 break; 603 case 0xf0: 604 masklen += 4; 605 final++; 606 break; 607 case 0xe0: 608 masklen += 3; 609 final++; 610 break; 611 case 0xc0: 612 masklen += 2; 613 final++; 614 break; 615 case 0x80: 616 masklen += 1; 617 final++; 618 break; 619 case 0x00: 620 final++; 621 break; 622 default: 623 final++; 624 illegal++; 625 break; 626 } 627 628 if (!illegal) 629 sin6.sin6_addr.s6_addr[i++] &= *p; 630 else 631 sin6.sin6_addr.s6_addr[i++] = 0x00; 632 } 633 while (i < (int)sizeof(struct in6_addr)) 634 sin6.sin6_addr.s6_addr[i++] = 0x00; 635 } else 636 masklen = 128; 637 638 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) 639 return ("default"); 640 641 if (illegal) 642 warnx("illegal prefixlen"); 643 644 if (nflag) 645 flag |= NI_NUMERICHOST; 646 error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, 647 hbuf, sizeof(hbuf), NULL, 0, flag); 648 if (error) 649 snprintf(hbuf, sizeof(hbuf), "invalid"); 650 651 snprintf(line, sizeof(line), "%s/%d", hbuf, masklen); 652 return (line); 653 } 654 655 /* 656 * Return the name of the network whose address is given. 657 * The address is assumed to be that of a net or subnet, not a host. 658 */ 659 char * 660 netname(struct sockaddr *sa, struct sockaddr *mask) 661 { 662 switch (sa->sa_family) { 663 case AF_INET: 664 return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr, 665 (struct sockaddr_in *)mask); 666 case AF_INET6: 667 return netname6((struct sockaddr_in6 *)sa, 668 (struct sockaddr_in6 *)mask); 669 case AF_LINK: 670 return (link_print(sa)); 671 case AF_MPLS: 672 return (label_print(sa)); 673 default: 674 snprintf(line, sizeof(line), "af %d: %s", 675 sa->sa_family, any_ntoa(sa)); 676 break; 677 } 678 return (line); 679 } 680 681 static const char hexlist[] = "0123456789abcdef"; 682 683 char * 684 any_ntoa(const struct sockaddr *sa) 685 { 686 static char obuf[240]; 687 const char *in = sa->sa_data; 688 char *out = obuf; 689 int len = sa->sa_len - offsetof(struct sockaddr, sa_data); 690 691 *out++ = 'Q'; 692 do { 693 *out++ = hexlist[(*in >> 4) & 15]; 694 *out++ = hexlist[(*in++) & 15]; 695 *out++ = '.'; 696 } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]); 697 out[-1] = '\0'; 698 return (obuf); 699 } 700 701 char * 702 link_print(struct sockaddr *sa) 703 { 704 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 705 u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen; 706 707 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 708 sdl->sdl_slen == 0) { 709 (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index); 710 return (line); 711 } 712 switch (sdl->sdl_type) { 713 case IFT_ETHER: 714 case IFT_CARP: 715 return (ether_ntoa((struct ether_addr *)lla)); 716 default: 717 return (link_ntoa(sdl)); 718 } 719 } 720 721 char * 722 mpls_op(u_int32_t type) 723 { 724 switch (type & (MPLS_OP_PUSH | MPLS_OP_POP | MPLS_OP_SWAP)) { 725 case MPLS_OP_LOCAL: 726 return ("LOCAL"); 727 case MPLS_OP_POP: 728 return ("POP"); 729 case MPLS_OP_SWAP: 730 return ("SWAP"); 731 case MPLS_OP_PUSH: 732 return ("PUSH"); 733 default: 734 return ("?"); 735 } 736 } 737 738 char * 739 label_print(struct sockaddr *sa) 740 { 741 struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; 742 743 if (smpls) 744 (void)snprintf(line, sizeof(line), "%u", 745 ntohl(smpls->smpls_label) >> MPLS_LABEL_OFFSET); 746 else 747 (void)snprintf(line, sizeof(line), "-"); 748 749 return (line); 750 } 751