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-rw-r--r--networking/route.c703
1 files changed, 703 insertions, 0 deletions
diff --git a/networking/route.c b/networking/route.c
new file mode 100644
index 000000000..a8926f44e
--- /dev/null
+++ b/networking/route.c
@@ -0,0 +1,703 @@
1/* vi: set sw=4 ts=4: */
2/* route
3 *
4 * Similar to the standard Unix route, but with only the necessary
5 * parts for AF_INET and AF_INET6
6 *
7 * Bjorn Wesen, Axis Communications AB
8 *
9 * Author of the original route:
10 * Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
11 * (derived from FvK's 'route.c 1.70 01/04/94')
12 *
13 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
14 *
15 * $Id: route.c,v 1.26 2004/03/19 23:27:08 mjn3 Exp $
16 *
17 * displayroute() code added by Vladimir N. Oleynik <dzo@simtreas.ru>
18 * adjustments by Larry Doolittle <LRDoolittle@lbl.gov>
19 *
20 * IPV6 support added by Bart Visscher <magick@linux-fan.com>
21 */
22
23/* 2004/03/09 Manuel Novoa III <mjn3@codepoet.org>
24 *
25 * Rewritten to fix several bugs, add additional error checking, and
26 * remove ridiculous amounts of bloat.
27 */
28
29#include "busybox.h"
30#include "inet_common.h"
31#include <getopt.h>
32#include <net/route.h>
33#include <net/if.h>
34
35
36#ifndef RTF_UP
37/* Keep this in sync with /usr/src/linux/include/linux/route.h */
38#define RTF_UP 0x0001 /* route usable */
39#define RTF_GATEWAY 0x0002 /* destination is a gateway */
40#define RTF_HOST 0x0004 /* host entry (net otherwise) */
41#define RTF_REINSTATE 0x0008 /* reinstate route after tmout */
42#define RTF_DYNAMIC 0x0010 /* created dyn. (by redirect) */
43#define RTF_MODIFIED 0x0020 /* modified dyn. (by redirect) */
44#define RTF_MTU 0x0040 /* specific MTU for this route */
45#ifndef RTF_MSS
46#define RTF_MSS RTF_MTU /* Compatibility :-( */
47#endif
48#define RTF_WINDOW 0x0080 /* per route window clamping */
49#define RTF_IRTT 0x0100 /* Initial round trip time */
50#define RTF_REJECT 0x0200 /* Reject route */
51#endif
52
53#if defined (SIOCADDRTOLD) || defined (RTF_IRTT) /* route */
54#define HAVE_NEW_ADDRT 1
55#endif
56
57#if HAVE_NEW_ADDRT
58#define mask_in_addr(x) (((struct sockaddr_in *)&((x).rt_genmask))->sin_addr.s_addr)
59#define full_mask(x) (x)
60#else
61#define mask_in_addr(x) ((x).rt_genmask)
62#define full_mask(x) (((struct sockaddr_in *)&(x))->sin_addr.s_addr)
63#endif
64
65/* The RTACTION entries must agree with tbl_verb[] below! */
66#define RTACTION_ADD 1
67#define RTACTION_DEL 2
68
69/* For the various tbl_*[] arrays, the 1st byte is the offset to
70 * the next entry and the 2nd byte is return value. */
71
72#define NET_FLAG 1
73#define HOST_FLAG 2
74
75/* We remap '-' to '#' to avoid problems with getopt. */
76static const char tbl_hash_net_host[] =
77 "\007\001#net\0"
78/* "\010\002#host\0" */
79 "\007\002#host" /* Since last, we can save a byte. */
80;
81
82#define KW_TAKES_ARG 020
83#define KW_SETS_FLAG 040
84
85#define KW_IPVx_METRIC 020
86#define KW_IPVx_NETMASK 021
87#define KW_IPVx_GATEWAY 022
88#define KW_IPVx_MSS 023
89#define KW_IPVx_WINDOW 024
90#define KW_IPVx_IRTT 025
91#define KW_IPVx_DEVICE 026
92
93#define KW_IPVx_FLAG_ONLY 040
94#define KW_IPVx_REJECT 040
95#define KW_IPVx_MOD 041
96#define KW_IPVx_DYN 042
97#define KW_IPVx_REINSTATE 043
98
99static const char tbl_ipvx[] =
100 /* 020 is the "takes an arg" bit */
101#if HAVE_NEW_ADDRT
102 "\011\020metric\0"
103#endif
104 "\012\021netmask\0"
105 "\005\022gw\0"
106 "\012\022gateway\0"
107 "\006\023mss\0"
108 "\011\024window\0"
109#ifdef RTF_IRTT
110 "\007\025irtt\0"
111#endif
112 "\006\026dev\0"
113 "\011\026device\0"
114 /* 040 is the "sets a flag" bit - MUST match flags_ipvx[] values below. */
115#ifdef RTF_REJECT
116 "\011\040reject\0"
117#endif
118 "\006\041mod\0"
119 "\006\042dyn\0"
120/* "\014\043reinstate\0" */
121 "\013\043reinstate" /* Since last, we can save a byte. */
122;
123
124static const int flags_ipvx[] = { /* MUST match tbl_ipvx[] values above. */
125#ifdef RTF_REJECT
126 RTF_REJECT,
127#endif
128 RTF_MODIFIED,
129 RTF_DYNAMIC,
130 RTF_REINSTATE
131};
132
133static int kw_lookup(const char *kwtbl, char ***pargs)
134{
135 if (**pargs) {
136 do {
137 if (strcmp(kwtbl+2, **pargs) == 0) { /* Found a match. */
138 *pargs += 1;
139 if (kwtbl[1] & KW_TAKES_ARG) {
140 if (!**pargs) { /* No more args! */
141 bb_show_usage();
142 }
143 *pargs += 1; /* Calling routine will use args[-1]. */
144 }
145 return kwtbl[1];
146 }
147 kwtbl += *kwtbl;
148 } while (*kwtbl);
149 }
150 return 0;
151}
152
153/* Add or delete a route, depending on action. */
154
155static void INET_setroute(int action, char **args)
156{
157 struct rtentry rt;
158 const char *netmask = NULL;
159 int skfd, isnet, xflag;
160
161 /* Grab the -net or -host options. Remember they were transformed. */
162 xflag = kw_lookup(tbl_hash_net_host, &args);
163
164 /* If we did grab -net or -host, make sure we still have an arg left. */
165 if (*args == NULL) {
166 bb_show_usage();
167 }
168
169 /* Clean out the RTREQ structure. */
170 memset((char *) &rt, 0, sizeof(struct rtentry));
171
172 {
173 const char *target = *args++;
174 char *prefix;
175
176 /* recognize x.x.x.x/mask format. */
177 prefix = strchr(target, '/');
178 if(prefix) {
179 int prefix_len;
180
181 prefix_len = xatoul_range(prefix+1, 0, 32);
182 mask_in_addr(rt) = htonl( ~ (0xffffffffUL >> prefix_len));
183 *prefix = '\0';
184#if HAVE_NEW_ADDRT
185 rt.rt_genmask.sa_family = AF_INET;
186#endif
187 } else {
188 /* Default netmask. */
189 netmask = bb_str_default;
190 }
191 /* Prefer hostname lookup is -host flag (xflag==1) was given. */
192 isnet = INET_resolve(target, (struct sockaddr_in *) &rt.rt_dst,
193 (xflag & HOST_FLAG));
194 if (isnet < 0) {
195 bb_error_msg_and_die("resolving %s", target);
196 }
197 if(prefix) {
198 /* do not destroy prefix for process args */
199 *prefix = '/';
200 }
201 }
202
203 if (xflag) { /* Reinit isnet if -net or -host was specified. */
204 isnet = (xflag & NET_FLAG);
205 }
206
207 /* Fill in the other fields. */
208 rt.rt_flags = ((isnet) ? RTF_UP : (RTF_UP | RTF_HOST));
209
210 while (*args) {
211 int k = kw_lookup(tbl_ipvx, &args);
212 const char *args_m1 = args[-1];
213
214 if (k & KW_IPVx_FLAG_ONLY) {
215 rt.rt_flags |= flags_ipvx[k & 3];
216 continue;
217 }
218
219#if HAVE_NEW_ADDRT
220 if (k == KW_IPVx_METRIC) {
221 rt.rt_metric = xatoul(args_m1) + 1;
222 continue;
223 }
224#endif
225
226 if (k == KW_IPVx_NETMASK) {
227 struct sockaddr mask;
228
229 if (mask_in_addr(rt)) {
230 bb_show_usage();
231 }
232
233 netmask = args_m1;
234 isnet = INET_resolve(netmask, (struct sockaddr_in *) &mask, 0);
235 if (isnet < 0) {
236 bb_error_msg_and_die("resolving %s", netmask);
237 }
238 rt.rt_genmask = full_mask(mask);
239 continue;
240 }
241
242 if (k == KW_IPVx_GATEWAY) {
243 if (rt.rt_flags & RTF_GATEWAY) {
244 bb_show_usage();
245 }
246
247 isnet = INET_resolve(args_m1,
248 (struct sockaddr_in *) &rt.rt_gateway, 1);
249 rt.rt_flags |= RTF_GATEWAY;
250
251 if (isnet) {
252 if (isnet < 0) {
253 bb_error_msg_and_die("resolving %s", args_m1);
254 }
255 bb_error_msg_and_die("gateway %s is a NETWORK", args_m1);
256 }
257 continue;
258 }
259
260 if (k == KW_IPVx_MSS) { /* Check valid MSS bounds. */
261 rt.rt_flags |= RTF_MSS;
262 rt.rt_mss = xatoul_range(args_m1, 64, 32768);
263 continue;
264 }
265
266 if (k == KW_IPVx_WINDOW) { /* Check valid window bounds. */
267 rt.rt_flags |= RTF_WINDOW;
268 rt.rt_window = xatoul_range(args_m1, 128, INT_MAX);
269 continue;
270 }
271
272#ifdef RTF_IRTT
273 if (k == KW_IPVx_IRTT) {
274 rt.rt_flags |= RTF_IRTT;
275 rt.rt_irtt = xatoul(args_m1);
276 rt.rt_irtt *= (sysconf(_SC_CLK_TCK) / 100); /* FIXME */
277#if 0 /* FIXME: do we need to check anything of this? */
278 if (rt.rt_irtt < 1 || rt.rt_irtt > (120 * HZ)) {
279 bb_error_msg_and_die("bad irtt");
280 }
281#endif
282 continue;
283 }
284#endif
285
286 /* Device is special in that it can be the last arg specified
287 * and doesn't requre the dev/device keyword in that case. */
288 if (!rt.rt_dev && ((k == KW_IPVx_DEVICE) || (!k && !*++args))) {
289 /* Don't use args_m1 here since args may have changed! */
290 rt.rt_dev = args[-1];
291 continue;
292 }
293
294 /* Nothing matched. */
295 bb_show_usage();
296 }
297
298#ifdef RTF_REJECT
299 if ((rt.rt_flags & RTF_REJECT) && !rt.rt_dev) {
300 rt.rt_dev = "lo";
301 }
302#endif
303
304 /* sanity checks.. */
305 if (mask_in_addr(rt)) {
306 unsigned long mask = mask_in_addr(rt);
307
308 mask = ~ntohl(mask);
309 if ((rt.rt_flags & RTF_HOST) && mask != 0xffffffff) {
310 bb_error_msg_and_die("netmask %.8x and host route conflict",
311 (unsigned int) mask);
312 }
313 if (mask & (mask + 1)) {
314 bb_error_msg_and_die("bogus netmask %s", netmask);
315 }
316 mask = ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr;
317 if (mask & ~mask_in_addr(rt)) {
318 bb_error_msg_and_die("netmask and route address conflict");
319 }
320 }
321
322 /* Fill out netmask if still unset */
323 if ((action == RTACTION_ADD) && (rt.rt_flags & RTF_HOST)) {
324 mask_in_addr(rt) = 0xffffffff;
325 }
326
327 /* Create a socket to the INET kernel. */
328 skfd = xsocket(AF_INET, SOCK_DGRAM, 0);
329
330 if (ioctl(skfd, ((action==RTACTION_ADD) ? SIOCADDRT : SIOCDELRT), &rt)<0) {
331 bb_perror_msg_and_die("SIOC[ADD|DEL]RT");
332 }
333
334 if (ENABLE_FEATURE_CLEAN_UP) close(skfd);
335}
336
337#ifdef CONFIG_FEATURE_IPV6
338
339static void INET6_setroute(int action, char **args)
340{
341 struct sockaddr_in6 sa6;
342 struct in6_rtmsg rt;
343 int prefix_len, skfd;
344 const char *devname;
345
346 /* We know args isn't NULL from the check in route_main. */
347 const char *target = *args++;
348
349 if (strcmp(target, bb_str_default) == 0) {
350 prefix_len = 0;
351 memset(&sa6, 0, sizeof(sa6));
352 } else {
353 char *cp;
354 if ((cp = strchr(target, '/'))) { /* Yes... const to non is ok. */
355 *cp = 0;
356 prefix_len = xatoul_range(cp+1, 0, 128);
357 } else {
358 prefix_len = 128;
359 }
360 if (INET6_resolve(target, (struct sockaddr_in6 *) &sa6) < 0) {
361 bb_error_msg_and_die("resolving %s", target);
362 }
363 }
364
365 /* Clean out the RTREQ structure. */
366 memset((char *) &rt, 0, sizeof(struct in6_rtmsg));
367
368 memcpy(&rt.rtmsg_dst, sa6.sin6_addr.s6_addr, sizeof(struct in6_addr));
369
370 /* Fill in the other fields. */
371 rt.rtmsg_dst_len = prefix_len;
372 rt.rtmsg_flags = ((prefix_len == 128) ? (RTF_UP|RTF_HOST) : RTF_UP);
373 rt.rtmsg_metric = 1;
374
375 devname = NULL;
376
377 while (*args) {
378 int k = kw_lookup(tbl_ipvx, &args);
379 const char *args_m1 = args[-1];
380
381 if ((k == KW_IPVx_MOD) || (k == KW_IPVx_DYN)) {
382 rt.rtmsg_flags |= flags_ipvx[k & 3];
383 continue;
384 }
385
386 if (k == KW_IPVx_METRIC) {
387 rt.rtmsg_metric = xatoul(args_m1);
388 continue;
389 }
390
391 if (k == KW_IPVx_GATEWAY) {
392 if (rt.rtmsg_flags & RTF_GATEWAY) {
393 bb_show_usage();
394 }
395
396 if (INET6_resolve(args_m1, (struct sockaddr_in6 *) &sa6) < 0) {
397 bb_error_msg_and_die("resolving %s", args_m1);
398 }
399 memcpy(&rt.rtmsg_gateway, sa6.sin6_addr.s6_addr,
400 sizeof(struct in6_addr));
401 rt.rtmsg_flags |= RTF_GATEWAY;
402 continue;
403 }
404
405 /* Device is special in that it can be the last arg specified
406 * and doesn't requre the dev/device keyword in that case. */
407 if (!devname && ((k == KW_IPVx_DEVICE) || (!k && !*++args))) {
408 /* Don't use args_m1 here since args may have changed! */
409 devname = args[-1];
410 continue;
411 }
412
413 /* Nothing matched. */
414 bb_show_usage();
415 }
416
417 /* Create a socket to the INET6 kernel. */
418 skfd = xsocket(AF_INET6, SOCK_DGRAM, 0);
419
420 rt.rtmsg_ifindex = 0;
421
422 if (devname) {
423 struct ifreq ifr;
424 memset(&ifr, 0, sizeof(ifr));
425 strncpy(ifr.ifr_name, devname, sizeof(ifr.ifr_name));
426
427 if (ioctl(skfd, SIOGIFINDEX, &ifr) < 0) {
428 bb_perror_msg_and_die("SIOGIFINDEX");
429 }
430 rt.rtmsg_ifindex = ifr.ifr_ifindex;
431 }
432
433 /* Tell the kernel to accept this route. */
434 if (ioctl(skfd, ((action==RTACTION_ADD) ? SIOCADDRT : SIOCDELRT), &rt)<0) {
435 bb_perror_msg_and_die("SIOC[ADD|DEL]RT");
436 }
437
438 if (ENABLE_FEATURE_CLEAN_UP) close(skfd);
439}
440#endif
441
442static const unsigned int flagvals[] = { /* Must agree with flagchars[]. */
443 RTF_GATEWAY,
444 RTF_HOST,
445 RTF_REINSTATE,
446 RTF_DYNAMIC,
447 RTF_MODIFIED,
448#ifdef CONFIG_FEATURE_IPV6
449 RTF_DEFAULT,
450 RTF_ADDRCONF,
451 RTF_CACHE
452#endif
453};
454
455#define IPV4_MASK (RTF_GATEWAY|RTF_HOST|RTF_REINSTATE|RTF_DYNAMIC|RTF_MODIFIED)
456#define IPV6_MASK (RTF_GATEWAY|RTF_HOST|RTF_DEFAULT|RTF_ADDRCONF|RTF_CACHE)
457
458static const char flagchars[] = /* Must agree with flagvals[]. */
459 "GHRDM"
460#ifdef CONFIG_FEATURE_IPV6
461 "DAC"
462#endif
463;
464
465static
466#ifndef CONFIG_FEATURE_IPV6
467__inline
468#endif
469void set_flags(char *flagstr, int flags)
470{
471 int i;
472
473 *flagstr++ = 'U';
474
475 for (i=0 ; (*flagstr = flagchars[i]) != 0 ; i++) {
476 if (flags & flagvals[i]) {
477 ++flagstr;
478 }
479 }
480}
481
482/* also used in netstat */
483void displayroutes(int noresolve, int netstatfmt);
484void displayroutes(int noresolve, int netstatfmt)
485{
486 char devname[64], flags[16], sdest[16], sgw[16];
487 unsigned long int d, g, m;
488 int flgs, ref, use, metric, mtu, win, ir;
489 struct sockaddr_in s_addr;
490 struct in_addr mask;
491
492 FILE *fp = xfopen("/proc/net/route", "r");
493
494 printf("Kernel IP routing table\n"
495 "Destination Gateway Genmask"
496 " Flags %s Iface\n",
497 netstatfmt ? " MSS Window irtt" : "Metric Ref Use");
498
499 if (fscanf(fp, "%*[^\n]\n") < 0) { /* Skip the first line. */
500 goto ERROR; /* Empty or missing line, or read error. */
501 }
502 while (1) {
503 int r;
504 r = fscanf(fp, "%63s%lx%lx%X%d%d%d%lx%d%d%d\n",
505 devname, &d, &g, &flgs, &ref, &use, &metric, &m,
506 &mtu, &win, &ir);
507 if (r != 11) {
508 if ((r < 0) && feof(fp)) { /* EOF with no (nonspace) chars read. */
509 break;
510 }
511 ERROR:
512 bb_error_msg_and_die("fscanf");
513 }
514
515 if (!(flgs & RTF_UP)) { /* Skip interfaces that are down. */
516 continue;
517 }
518
519 set_flags(flags, (flgs & IPV4_MASK));
520#ifdef RTF_REJECT
521 if (flgs & RTF_REJECT) {
522 flags[0] = '!';
523 }
524#endif
525
526 memset(&s_addr, 0, sizeof(struct sockaddr_in));
527 s_addr.sin_family = AF_INET;
528 s_addr.sin_addr.s_addr = d;
529 INET_rresolve(sdest, sizeof(sdest), &s_addr,
530 (noresolve | 0x8000), m); /* Default instead of *. */
531
532 s_addr.sin_addr.s_addr = g;
533 INET_rresolve(sgw, sizeof(sgw), &s_addr,
534 (noresolve | 0x4000), m); /* Host instead of net. */
535
536 mask.s_addr = m;
537 printf("%-16s%-16s%-16s%-6s", sdest, sgw, inet_ntoa(mask), flags);
538 if (netstatfmt) {
539 printf("%5d %-5d %6d %s\n", mtu, win, ir, devname);
540 } else {
541 printf("%-6d %-2d %7d %s\n", metric, ref, use, devname);
542 }
543 }
544}
545
546#ifdef CONFIG_FEATURE_IPV6
547
548static void INET6_displayroutes(int noresolve)
549{
550 char addr6[128], naddr6[128];
551 /* In addr6x, we store both 40-byte ':'-delimited ipv6 addresses.
552 * We read the non-delimited strings into the tail of the buffer
553 * using fscanf and then modify the buffer by shifting forward
554 * while inserting ':'s and the nul terminator for the first string.
555 * Hence the strings are at addr6x and addr6x+40. This generates
556 * _much_ less code than the previous (upstream) approach. */
557 char addr6x[80];
558 char iface[16], flags[16];
559 int iflags, metric, refcnt, use, prefix_len, slen;
560 struct sockaddr_in6 snaddr6;
561
562 FILE *fp = xfopen("/proc/net/ipv6_route", "r");
563
564 printf("Kernel IPv6 routing table\n%-44s%-40s"
565 "Flags Metric Ref Use Iface\n",
566 "Destination", "Next Hop");
567
568 while (1) {
569 int r;
570 r = fscanf(fp, "%32s%x%*s%x%32s%x%x%x%x%s\n",
571 addr6x+14, &prefix_len, &slen, addr6x+40+7,
572 &metric, &use, &refcnt, &iflags, iface);
573 if (r != 9) {
574 if ((r < 0) && feof(fp)) { /* EOF with no (nonspace) chars read. */
575 break;
576 }
577 ERROR:
578 bb_error_msg_and_die("fscanf");
579 }
580
581 /* Do the addr6x shift-and-insert changes to ':'-delimit addresses.
582 * For now, always do this to validate the proc route format, even
583 * if the interface is down. */
584 {
585 int i = 0;
586 char *p = addr6x+14;
587
588 do {
589 if (!*p) {
590 if (i==40) { /* nul terminator for 1st address? */
591 addr6x[39] = 0; /* Fixup... need 0 instead of ':'. */
592 ++p; /* Skip and continue. */
593 continue;
594 }
595 goto ERROR;
596 }
597 addr6x[i++] = *p++;
598 if (!((i+1)%5)) {
599 addr6x[i++] = ':';
600 }
601 } while (i < 40+28+7);
602 }
603
604 if (!(iflags & RTF_UP)) { /* Skip interfaces that are down. */
605 continue;
606 }
607
608 set_flags(flags, (iflags & IPV6_MASK));
609
610 r = 0;
611 do {
612 inet_pton(AF_INET6, addr6x + r,
613 (struct sockaddr *) &snaddr6.sin6_addr);
614 snaddr6.sin6_family = AF_INET6;
615 INET6_rresolve(naddr6, sizeof(naddr6),
616 (struct sockaddr_in6 *) &snaddr6,
617 0x0fff /* Apparently, upstream never resolves. */
618 );
619
620 if (!r) { /* 1st pass */
621 snprintf(addr6, sizeof(addr6), "%s/%d", naddr6, prefix_len);
622 r += 40;
623 } else { /* 2nd pass */
624 /* Print the info. */
625 printf("%-43s %-39s %-5s %-6d %-2d %7d %-8s\n",
626 addr6, naddr6, flags, metric, refcnt, use, iface);
627 break;
628 }
629 } while (1);
630 }
631}
632
633#endif
634
635#define ROUTE_OPT_A 0x01
636#define ROUTE_OPT_n 0x02
637#define ROUTE_OPT_e 0x04
638#define ROUTE_OPT_INET6 0x08 /* Not an actual option. See below. */
639
640/* 1st byte is offset to next entry offset. 2nd byte is return value. */
641static const char tbl_verb[] = /* 2nd byte matches RTACTION_* code */
642 "\006\001add\0"
643 "\006\002del\0"
644/* "\011\002delete\0" */
645 "\010\002delete" /* Since last, we can save a byte. */
646;
647
648int route_main(int argc, char **argv)
649{
650 unsigned opt;
651 int what;
652 char *family;
653 char **p;
654
655 /* First, remap '-net' and '-host' to avoid getopt problems. */
656 p = argv;
657 while (*++p) {
658 if ((strcmp(*p, "-net") == 0) || (strcmp(*p, "-host") == 0)) {
659 p[0][0] = '#';
660 }
661 }
662
663 opt = getopt32(argc, argv, "A:ne", &family);
664
665 if ((opt & ROUTE_OPT_A) && strcmp(family, "inet")) {
666#ifdef CONFIG_FEATURE_IPV6
667 if (strcmp(family, "inet6") == 0) {
668 opt |= ROUTE_OPT_INET6; /* Set flag for ipv6. */
669 } else
670#endif
671 bb_show_usage();
672 }
673
674 argv += optind;
675
676 /* No more args means display the routing table. */
677 if (!*argv) {
678 int noresolve = (opt & ROUTE_OPT_n) ? 0x0fff : 0;
679#ifdef CONFIG_FEATURE_IPV6
680 if (opt & ROUTE_OPT_INET6)
681 INET6_displayroutes(noresolve);
682 else
683#endif
684 displayroutes(noresolve, opt & ROUTE_OPT_e);
685
686 fflush_stdout_and_exit(EXIT_SUCCESS);
687 }
688
689 /* Check verb. At the moment, must be add, del, or delete. */
690 what = kw_lookup(tbl_verb, &argv);
691 if (!what || !*argv) { /* Unknown verb or no more args. */
692 bb_show_usage();
693 }
694
695#ifdef CONFIG_FEATURE_IPV6
696 if (opt & ROUTE_OPT_INET6)
697 INET6_setroute(what, argv);
698 else
699#endif
700 INET_setroute(what, argv);
701
702 return EXIT_SUCCESS;
703}
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