1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/protosw.h> 34 #include <sys/socket.h> 35 #include <sys/socketvar.h> 36 #include <sys/sysctl.h> 37 #include <sys/time.h> 38 39 #include <net/ethernet.h> 40 #include <net/if.h> 41 #include <net/if_dl.h> 42 #include <net/if_types.h> 43 #include <net/route.h> 44 45 #include <netinet/in.h> 46 #include <netgraph/ng_socket.h> 47 48 #include <arpa/inet.h> 49 #include <ifaddrs.h> 50 #include <libutil.h> 51 #include <netdb.h> 52 #include <stdbool.h> 53 #include <stdint.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <stdbool.h> 57 #include <string.h> 58 #include <sysexits.h> 59 #include <unistd.h> 60 #include <libxo/xo.h> 61 #include "netstat.h" 62 #include "common.h" 63 #include "nl_defs.h" 64 65 /* 66 * Definitions for showing gateway flags. 67 */ 68 struct bits rt_bits[] = { 69 { RTF_UP, 'U', "up" }, 70 { RTF_GATEWAY, 'G', "gateway" }, 71 { RTF_HOST, 'H', "host" }, 72 { RTF_REJECT, 'R', "reject" }, 73 { RTF_DYNAMIC, 'D', "dynamic" }, 74 { RTF_MODIFIED, 'M', "modified" }, 75 { RTF_DONE, 'd', "done" }, /* Completed -- for routing msgs only */ 76 { RTF_XRESOLVE, 'X', "xresolve" }, 77 { RTF_STATIC, 'S', "static" }, 78 { RTF_PROTO1, '1', "proto1" }, 79 { RTF_PROTO2, '2', "proto2" }, 80 { RTF_PROTO3, '3', "proto3" }, 81 { RTF_BLACKHOLE,'B', "blackhole" }, 82 { RTF_BROADCAST,'b', "broadcast" }, 83 #ifdef RTF_LLINFO 84 { RTF_LLINFO, 'L', "llinfo" }, 85 #endif 86 { 0 , 0, NULL } 87 }; 88 89 #ifdef WITHOUT_NETLINK 90 static struct ifmap_entry *ifmap; 91 static size_t ifmap_size; 92 #endif 93 static struct timespec uptime; 94 95 static const char *netname4(in_addr_t, in_addr_t); 96 #ifdef INET6 97 static const char *netname6(struct sockaddr_in6 *, struct sockaddr_in6 *); 98 #endif 99 #ifdef WITHOUT_NETLINK 100 static void p_rtable_sysctl(int, int); 101 static void p_rtentry_sysctl(const char *name, struct rt_msghdr *); 102 #endif 103 static void domask(char *, size_t, u_long); 104 105 const uint32_t rt_default_weight = RT_DEFAULT_WEIGHT; 106 107 /* 108 * Print routing tables. 109 */ 110 void 111 routepr(int fibnum, int af) 112 { 113 size_t intsize; 114 int numfibs; 115 116 if (live == 0) 117 return; 118 119 intsize = sizeof(int); 120 if (fibnum == -1 && 121 sysctlbyname("net.my_fibnum", &fibnum, &intsize, NULL, 0) == -1) 122 fibnum = 0; 123 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 124 numfibs = 1; 125 if (fibnum < 0 || fibnum > numfibs - 1) 126 xo_errx(EX_USAGE, "%d: invalid fib", fibnum); 127 /* 128 * Since kernel & userland use different timebase 129 * (time_uptime vs time_second) and we are reading kernel memory 130 * directly we should do rt_expire --> expire_time conversion. 131 */ 132 if (clock_gettime(CLOCK_UPTIME, &uptime) < 0) 133 xo_err(EX_OSERR, "clock_gettime() failed"); 134 135 xo_open_container("route-information"); 136 xo_emit("{T:Routing tables}"); 137 if (fibnum) 138 xo_emit(" ({L:fib}: {:fib/%d})", fibnum); 139 xo_emit("\n"); 140 #ifdef WITHOUT_NETLINK 141 p_rtable_sysctl(fibnum, af); 142 #else 143 p_rtable_netlink(fibnum, af); 144 #endif 145 xo_close_container("route-information"); 146 } 147 148 149 /* 150 * Print address family header before a section of the routing table. 151 */ 152 void 153 pr_family(int af1) 154 { 155 const char *afname; 156 157 switch (af1) { 158 case AF_INET: 159 afname = "Internet"; 160 break; 161 #ifdef INET6 162 case AF_INET6: 163 afname = "Internet6"; 164 break; 165 #endif /*INET6*/ 166 case AF_ISO: 167 afname = "ISO"; 168 break; 169 case AF_CCITT: 170 afname = "X.25"; 171 break; 172 case AF_NETGRAPH: 173 afname = "Netgraph"; 174 break; 175 default: 176 afname = NULL; 177 break; 178 } 179 if (afname) 180 xo_emit("\n{k:address-family/%s}:\n", afname); 181 else 182 xo_emit("\n{L:Protocol Family} {k:address-family/%d}:\n", af1); 183 } 184 185 /* column widths; each followed by one space */ 186 #define WID_IF_DEFAULT (Wflag ? IFNAMSIZ : 12) /* width of netif column */ 187 #ifndef INET6 188 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ 189 #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ 190 #else 191 #define WID_DST_DEFAULT(af) \ 192 ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) 193 #define WID_GW_DEFAULT(af) \ 194 ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) 195 #endif /*INET6*/ 196 197 struct _wid wid; 198 199 /* 200 * Print header for routing table columns. 201 */ 202 void 203 pr_rthdr(int af1 __unused) 204 { 205 206 if (Wflag) { 207 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 208 "{T:/%*.*s} {T:/%*.*s} {T:/%*s}\n", 209 wid.dst, wid.dst, "Destination", 210 wid.gw, wid.gw, "Gateway", 211 wid.flags, wid.flags, "Flags", 212 wid.mtu, wid.mtu, "Nhop#", 213 wid.mtu, wid.mtu, "Mtu", 214 wid.iface, wid.iface, "Netif", 215 wid.expire, "Expire"); 216 } else { 217 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} " 218 "{T:/%*s}\n", 219 wid.dst, wid.dst, "Destination", 220 wid.gw, wid.gw, "Gateway", 221 wid.flags, wid.flags, "Flags", 222 wid.iface, wid.iface, "Netif", 223 wid.expire, "Expire"); 224 } 225 } 226 227 void 228 set_wid(int fam) 229 { 230 wid.dst = WID_DST_DEFAULT(fam); 231 wid.gw = WID_GW_DEFAULT(fam); 232 wid.flags = 6; 233 wid.pksent = 8; 234 wid.mtu = 6; 235 wid.iface = WID_IF_DEFAULT; 236 wid.expire = 6; 237 } 238 239 #ifdef WITHOUT_NETLINK 240 static void 241 p_rtable_sysctl(int fibnum, int af) 242 { 243 size_t needed; 244 int mib[7]; 245 char *buf, *next, *lim; 246 struct rt_msghdr *rtm; 247 struct sockaddr *sa; 248 int fam = AF_UNSPEC; 249 int need_table_close = false; 250 251 ifmap = prepare_ifmap(&ifmap_size); 252 253 mib[0] = CTL_NET; 254 mib[1] = PF_ROUTE; 255 mib[2] = 0; 256 mib[3] = af; 257 mib[4] = NET_RT_DUMP; 258 mib[5] = 0; 259 mib[6] = fibnum; 260 if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) 261 xo_err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d estimate", af, 262 fibnum); 263 if ((buf = malloc(needed)) == NULL) 264 xo_errx(EX_OSERR, "malloc(%lu)", (unsigned long)needed); 265 if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) 266 xo_err(EX_OSERR, "sysctl: net.route.0.%d.dump.%d", af, fibnum); 267 lim = buf + needed; 268 xo_open_container("route-table"); 269 xo_open_list("rt-family"); 270 for (next = buf; next < lim; next += rtm->rtm_msglen) { 271 rtm = (struct rt_msghdr *)next; 272 if (rtm->rtm_version != RTM_VERSION) 273 continue; 274 /* 275 * Peek inside header to determine AF 276 */ 277 sa = (struct sockaddr *)(rtm + 1); 278 /* Only print family first time. */ 279 if (fam != sa->sa_family) { 280 if (need_table_close) { 281 xo_close_list("rt-entry"); 282 xo_close_instance("rt-family"); 283 } 284 need_table_close = true; 285 fam = sa->sa_family; 286 set_wid(fam); 287 xo_open_instance("rt-family"); 288 pr_family(fam); 289 xo_open_list("rt-entry"); 290 291 pr_rthdr(fam); 292 } 293 p_rtentry_sysctl("rt-entry", rtm); 294 } 295 if (need_table_close) { 296 xo_close_list("rt-entry"); 297 xo_close_instance("rt-family"); 298 } 299 xo_close_list("rt-family"); 300 xo_close_container("route-table"); 301 free(buf); 302 } 303 304 static void 305 p_rtentry_sysctl(const char *name, struct rt_msghdr *rtm) 306 { 307 struct sockaddr *sa, *addr[RTAX_MAX]; 308 char buffer[128]; 309 char prettyname[128]; 310 int i, protrusion; 311 312 xo_open_instance(name); 313 sa = (struct sockaddr *)(rtm + 1); 314 for (i = 0; i < RTAX_MAX; i++) { 315 if (rtm->rtm_addrs & (1 << i)) { 316 addr[i] = sa; 317 sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa)); 318 } 319 } 320 321 protrusion = p_sockaddr("destination", addr[RTAX_DST], 322 addr[RTAX_NETMASK], 323 rtm->rtm_flags, wid.dst); 324 protrusion = p_sockaddr("gateway", addr[RTAX_GATEWAY], NULL, RTF_HOST, 325 wid.gw - protrusion); 326 snprintf(buffer, sizeof(buffer), "{[:-%d}{:flags/%%s}{]:} ", 327 wid.flags - protrusion); 328 p_flags(rtm->rtm_flags, buffer); 329 /* Output path weight as non-visual property */ 330 xo_emit("{e:weight/%u}", rtm->rtm_rmx.rmx_weight); 331 if (Wflag) { 332 /* XXX: use=0? */ 333 xo_emit("{t:nhop/%*lu} ", wid.mtu, rtm->rtm_rmx.rmx_nhidx); 334 335 if (rtm->rtm_rmx.rmx_mtu != 0) 336 xo_emit("{t:mtu/%*lu} ", wid.mtu, rtm->rtm_rmx.rmx_mtu); 337 else 338 xo_emit("{P:/%*s} ", wid.mtu, ""); 339 } 340 341 memset(prettyname, 0, sizeof(prettyname)); 342 if (rtm->rtm_index < ifmap_size) { 343 strlcpy(prettyname, ifmap[rtm->rtm_index].ifname, 344 sizeof(prettyname)); 345 if (*prettyname == '\0') 346 strlcpy(prettyname, "---", sizeof(prettyname)); 347 } 348 349 if (Wflag) 350 xo_emit("{t:interface-name/%*s}", wid.iface, prettyname); 351 else 352 xo_emit("{t:interface-name/%*.*s}", wid.iface, wid.iface, 353 prettyname); 354 if (rtm->rtm_rmx.rmx_expire) { 355 time_t expire_time; 356 357 if ((expire_time = rtm->rtm_rmx.rmx_expire - uptime.tv_sec) > 0) 358 xo_emit(" {:expire-time/%*d}", wid.expire, 359 (int)expire_time); 360 } 361 362 xo_emit("\n"); 363 xo_close_instance(name); 364 } 365 #endif 366 367 int 368 p_sockaddr(const char *name, struct sockaddr *sa, struct sockaddr *mask, 369 int flags, int width) 370 { 371 const char *cp; 372 char buf[128]; 373 int protrusion; 374 375 cp = fmt_sockaddr(sa, mask, flags); 376 377 if (width < 0) { 378 snprintf(buf, sizeof(buf), "{:%s/%%s} ", name); 379 xo_emit(buf, cp); 380 protrusion = 0; 381 } else { 382 if (Wflag != 0 || numeric_addr) { 383 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%s}{]:} ", 384 -width, name); 385 xo_emit(buf, cp); 386 protrusion = strlen(cp) - width; 387 if (protrusion < 0) 388 protrusion = 0; 389 } else { 390 snprintf(buf, sizeof(buf), "{[:%d}{:%s/%%-.*s}{]:} ", 391 -width, name); 392 xo_emit(buf, width, cp); 393 protrusion = 0; 394 } 395 } 396 return (protrusion); 397 } 398 399 const char * 400 fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) 401 { 402 static char buf[128]; 403 const char *cp; 404 405 if (sa == NULL) 406 return ("null"); 407 408 switch(sa->sa_family) { 409 #ifdef INET6 410 case AF_INET6: 411 /* 412 * The sa6->sin6_scope_id must be filled here because 413 * this sockaddr is extracted from kmem(4) directly 414 * and has KAME-specific embedded scope id in 415 * sa6->sin6_addr.s6_addr[2]. 416 */ 417 in6_fillscopeid(satosin6(sa)); 418 /* FALLTHROUGH */ 419 #endif /*INET6*/ 420 case AF_INET: 421 if (flags & RTF_HOST) 422 cp = routename(sa, numeric_addr); 423 else if (mask) 424 cp = netname(sa, mask); 425 else 426 cp = netname(sa, NULL); 427 break; 428 case AF_NETGRAPH: 429 { 430 strlcpy(buf, ((struct sockaddr_ng *)sa)->sg_data, 431 sizeof(buf)); 432 cp = buf; 433 break; 434 } 435 case AF_LINK: 436 { 437 #if 0 438 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 439 440 /* Interface route. */ 441 if (sdl->sdl_nlen) 442 cp = sdl->sdl_data; 443 else 444 #endif 445 cp = routename(sa, 1); 446 break; 447 } 448 default: 449 { 450 u_char *s = (u_char *)sa->sa_data, *slim; 451 char *cq, *cqlim; 452 453 cq = buf; 454 slim = sa->sa_len + (u_char *) sa; 455 cqlim = cq + sizeof(buf) - sizeof(" ffff"); 456 snprintf(cq, sizeof(buf), "(%d)", sa->sa_family); 457 cq += strlen(cq); 458 while (s < slim && cq < cqlim) { 459 snprintf(cq, sizeof(" ff"), " %02x", *s++); 460 cq += strlen(cq); 461 if (s < slim) { 462 snprintf(cq, sizeof("ff"), "%02x", *s++); 463 cq += strlen(cq); 464 } 465 } 466 cp = buf; 467 } 468 } 469 470 return (cp); 471 } 472 473 void 474 p_flags(int f, const char *format) 475 { 476 477 print_flags_generic(f, rt_bits, format, "flags_pretty"); 478 } 479 480 481 char * 482 routename(struct sockaddr *sa, int flags) 483 { 484 static char line[NI_MAXHOST]; 485 int error, f; 486 487 f = (flags) ? NI_NUMERICHOST : 0; 488 error = getnameinfo(sa, sa->sa_len, line, sizeof(line), 489 NULL, 0, f); 490 if (error) { 491 const void *src; 492 switch (sa->sa_family) { 493 #ifdef INET 494 case AF_INET: 495 src = &satosin(sa)->sin_addr; 496 break; 497 #endif /* INET */ 498 #ifdef INET6 499 case AF_INET6: 500 src = &satosin6(sa)->sin6_addr; 501 break; 502 #endif /* INET6 */ 503 default: 504 return(line); 505 } 506 inet_ntop(sa->sa_family, src, line, sizeof(line) - 1); 507 return (line); 508 } 509 trimdomain(line, strlen(line)); 510 511 return (line); 512 } 513 514 #define NSHIFT(m) ( \ 515 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 516 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 517 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 518 0) 519 520 static void 521 domask(char *dst, size_t buflen, u_long mask) 522 { 523 int b, i; 524 525 if (mask == 0) { 526 *dst = '\0'; 527 return; 528 } 529 i = 0; 530 for (b = 0; b < 32; b++) 531 if (mask & (1 << b)) { 532 int bb; 533 534 i = b; 535 for (bb = b+1; bb < 32; bb++) 536 if (!(mask & (1 << bb))) { 537 i = -1; /* noncontig */ 538 break; 539 } 540 break; 541 } 542 if (i == -1) 543 snprintf(dst, buflen, "&0x%lx", mask); 544 else 545 snprintf(dst, buflen, "/%d", 32-i); 546 } 547 548 /* 549 * Return the name of the network whose address is given. 550 */ 551 const char * 552 netname(struct sockaddr *sa, struct sockaddr *mask) 553 { 554 switch (sa->sa_family) { 555 case AF_INET: 556 if (mask != NULL) 557 return (netname4(satosin(sa)->sin_addr.s_addr, 558 satosin(mask)->sin_addr.s_addr)); 559 else 560 return (netname4(satosin(sa)->sin_addr.s_addr, 561 INADDR_ANY)); 562 break; 563 #ifdef INET6 564 case AF_INET6: 565 return (netname6(satosin6(sa), satosin6(mask))); 566 #endif /* INET6 */ 567 default: 568 return (NULL); 569 } 570 } 571 572 static const char * 573 netname4(in_addr_t in, in_addr_t mask) 574 { 575 char *cp = 0; 576 static char line[MAXHOSTNAMELEN + sizeof("&0xffffffff")]; 577 char nline[INET_ADDRSTRLEN]; 578 struct netent *np = 0; 579 in_addr_t i; 580 581 if (!numeric_addr && in == INADDR_ANY && mask == 0) { 582 strlcpy(line, "default", sizeof(line)); 583 return (line); 584 } 585 586 /* It is ok to supply host address. */ 587 in &= mask; 588 589 i = ntohl(in); 590 if (!numeric_addr && i) { 591 np = getnetbyaddr(i >> NSHIFT(ntohl(mask)), AF_INET); 592 if (np != NULL) { 593 cp = np->n_name; 594 trimdomain(cp, strlen(cp)); 595 } 596 } 597 if (cp != NULL) 598 strlcpy(line, cp, sizeof(line)); 599 else { 600 inet_ntop(AF_INET, &in, nline, sizeof(nline)); 601 strlcpy(line, nline, sizeof(line)); 602 domask(line + strlen(line), sizeof(line) - strlen(line), ntohl(mask)); 603 } 604 605 return (line); 606 } 607 608 #undef NSHIFT 609 610 #ifdef INET6 611 void 612 in6_fillscopeid(struct sockaddr_in6 *sa6) 613 { 614 #if defined(__KAME__) 615 /* 616 * XXX: This is a special workaround for KAME kernels. 617 * sin6_scope_id field of SA should be set in the future. 618 */ 619 if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) || 620 IN6_IS_ADDR_MC_NODELOCAL(&sa6->sin6_addr) || 621 IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) { 622 if (sa6->sin6_scope_id == 0) 623 sa6->sin6_scope_id = 624 ntohs(*(u_int16_t *)&sa6->sin6_addr.s6_addr[2]); 625 sa6->sin6_addr.s6_addr[2] = sa6->sin6_addr.s6_addr[3] = 0; 626 } 627 #endif 628 } 629 630 /* Mask to length table. To check an invalid value, (length + 1) is used. */ 631 static const u_char masktolen[256] = { 632 [0xff] = 8 + 1, 633 [0xfe] = 7 + 1, 634 [0xfc] = 6 + 1, 635 [0xf8] = 5 + 1, 636 [0xf0] = 4 + 1, 637 [0xe0] = 3 + 1, 638 [0xc0] = 2 + 1, 639 [0x80] = 1 + 1, 640 [0x00] = 0 + 1, 641 }; 642 643 static const char * 644 netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) 645 { 646 static char line[NI_MAXHOST + sizeof("/xxx") - 1]; 647 struct sockaddr_in6 addr; 648 char nline[NI_MAXHOST]; 649 char maskbuf[sizeof("/xxx")]; 650 u_char *p, *lim; 651 u_char masklen; 652 int i; 653 bool illegal = false; 654 655 if (mask) { 656 p = (u_char *)&mask->sin6_addr; 657 for (masklen = 0, lim = p + 16; p < lim; p++) { 658 if (masktolen[*p] > 0) { 659 /* -1 is required. */ 660 masklen += (masktolen[*p] - 1); 661 } else 662 illegal = true; 663 } 664 if (illegal) 665 xo_error("illegal prefixlen\n"); 666 667 memcpy(&addr, sa6, sizeof(addr)); 668 for (i = 0; i < 16; ++i) 669 addr.sin6_addr.s6_addr[i] &= 670 mask->sin6_addr.s6_addr[i]; 671 sa6 = &addr; 672 } 673 else 674 masklen = 128; 675 676 if (!numeric_addr && masklen == 0 && 677 IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 678 return("default"); 679 680 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, nline, sizeof(nline), 681 NULL, 0, NI_NUMERICHOST); 682 if (numeric_addr) 683 strlcpy(line, nline, sizeof(line)); 684 else 685 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, 686 sizeof(line), NULL, 0, 0); 687 if (numeric_addr || strcmp(line, nline) == 0) { 688 snprintf(maskbuf, sizeof(maskbuf), "/%d", masklen); 689 strlcat(line, maskbuf, sizeof(line)); 690 } 691 692 return (line); 693 } 694 #endif /*INET6*/ 695 696 /* 697 * Print routing statistics 698 */ 699 void 700 rt_stats(void) 701 { 702 struct rtstat rtstat; 703 704 if (fetch_stats("net.route.stats", nl[N_RTSTAT].n_value, &rtstat, 705 sizeof(rtstat), kread_counters) != 0) 706 return; 707 708 xo_emit("{T:routing}:\n"); 709 710 #define p(f, m) if (rtstat.f || sflag <= 1) \ 711 xo_emit(m, rtstat.f, plural(rtstat.f)) 712 713 p(rts_badredirect, "\t{:bad-redirects/%ju} " 714 "{N:/bad routing redirect%s}\n"); 715 p(rts_dynamic, "\t{:dynamically-created/%ju} " 716 "{N:/dynamically created route%s}\n"); 717 p(rts_newgateway, "\t{:new-gateways/%ju} " 718 "{N:/new gateway%s due to redirects}\n"); 719 p(rts_unreach, "\t{:unreachable-destination/%ju} " 720 "{N:/destination%s found unreachable}\n"); 721 p(rts_wildcard, "\t{:wildcard-uses/%ju} " 722 "{N:/use%s of a wildcard route}\n"); 723 #undef p 724 } 725