source: MondoRescue/branches/2.2.5/mindi-busybox/networking/route.c@ 1765

Last change on this file since 1765 was 1765, checked in by Bruno Cornec, 16 years ago

Update to busybox 1.7.2
File size: 17.2 KB
Line 
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 *
16 * displayroute() code added by Vladimir N. Oleynik <dzo@simtreas.ru>
17 * adjustments by Larry Doolittle <LRDoolittle@lbl.gov>
18 *
19 * IPV6 support added by Bart Visscher <magick@linux-fan.com>
20 */
21
22/* 2004/03/09 Manuel Novoa III <mjn3@codepoet.org>
23 *
24 * Rewritten to fix several bugs, add additional error checking, and
25 * remove ridiculous amounts of bloat.
26 */
27
28#include <getopt.h>
29#include <net/route.h>
30#include <net/if.h>
31
32#include "libbb.h"
33#include "inet_common.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[] ALIGN1 =
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[] ALIGN1 =
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(&rt, 0, sizeof(rt));
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 = (char*)"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 (action == RTACTION_ADD)
331 xioctl(skfd, SIOCADDRT, &rt);
332 else
333 xioctl(skfd, SIOCDELRT, &rt);
334
335 if (ENABLE_FEATURE_CLEAN_UP) close(skfd);
336}
337
338#if ENABLE_FEATURE_IPV6
339
340static void INET6_setroute(int action, char **args)
341{
342 struct sockaddr_in6 sa6;
343 struct in6_rtmsg rt;
344 int prefix_len, skfd;
345 const char *devname;
346
347 /* We know args isn't NULL from the check in route_main. */
348 const char *target = *args++;
349
350 if (strcmp(target, bb_str_default) == 0) {
351 prefix_len = 0;
352 memset(&sa6, 0, sizeof(sa6));
353 } else {
354 char *cp;
355 if ((cp = strchr(target, '/'))) { /* Yes... const to non is ok. */
356 *cp = 0;
357 prefix_len = xatoul_range(cp+1, 0, 128);
358 } else {
359 prefix_len = 128;
360 }
361 if (INET6_resolve(target, (struct sockaddr_in6 *) &sa6) < 0) {
362 bb_error_msg_and_die("resolving %s", target);
363 }
364 }
365
366 /* Clean out the RTREQ structure. */
367 memset(&rt, 0, sizeof(rt));
368
369 memcpy(&rt.rtmsg_dst, sa6.sin6_addr.s6_addr, sizeof(struct in6_addr));
370
371 /* Fill in the other fields. */
372 rt.rtmsg_dst_len = prefix_len;
373 rt.rtmsg_flags = ((prefix_len == 128) ? (RTF_UP|RTF_HOST) : RTF_UP);
374 rt.rtmsg_metric = 1;
375
376 devname = NULL;
377
378 while (*args) {
379 int k = kw_lookup(tbl_ipvx, &args);
380 const char *args_m1 = args[-1];
381
382 if ((k == KW_IPVx_MOD) || (k == KW_IPVx_DYN)) {
383 rt.rtmsg_flags |= flags_ipvx[k & 3];
384 continue;
385 }
386
387 if (k == KW_IPVx_METRIC) {
388 rt.rtmsg_metric = xatoul(args_m1);
389 continue;
390 }
391
392 if (k == KW_IPVx_GATEWAY) {
393 if (rt.rtmsg_flags & RTF_GATEWAY) {
394 bb_show_usage();
395 }
396
397 if (INET6_resolve(args_m1, (struct sockaddr_in6 *) &sa6) < 0) {
398 bb_error_msg_and_die("resolving %s", args_m1);
399 }
400 memcpy(&rt.rtmsg_gateway, sa6.sin6_addr.s6_addr,
401 sizeof(struct in6_addr));
402 rt.rtmsg_flags |= RTF_GATEWAY;
403 continue;
404 }
405
406 /* Device is special in that it can be the last arg specified
407 * and doesn't requre the dev/device keyword in that case. */
408 if (!devname && ((k == KW_IPVx_DEVICE) || (!k && !*++args))) {
409 /* Don't use args_m1 here since args may have changed! */
410 devname = args[-1];
411 continue;
412 }
413
414 /* Nothing matched. */
415 bb_show_usage();
416 }
417
418 /* Create a socket to the INET6 kernel. */
419 skfd = xsocket(AF_INET6, SOCK_DGRAM, 0);
420
421 rt.rtmsg_ifindex = 0;
422
423 if (devname) {
424 struct ifreq ifr;
425 memset(&ifr, 0, sizeof(ifr));
426 strncpy(ifr.ifr_name, devname, sizeof(ifr.ifr_name));
427 xioctl(skfd, SIOGIFINDEX, &ifr);
428 rt.rtmsg_ifindex = ifr.ifr_ifindex;
429 }
430
431 /* Tell the kernel to accept this route. */
432 if (action == RTACTION_ADD)
433 xioctl(skfd, SIOCADDRT, &rt);
434 else
435 xioctl(skfd, SIOCDELRT, &rt);
436
437 if (ENABLE_FEATURE_CLEAN_UP) close(skfd);
438}
439#endif
440
441static const unsigned flagvals[] = { /* Must agree with flagchars[]. */
442 RTF_GATEWAY,
443 RTF_HOST,
444 RTF_REINSTATE,
445 RTF_DYNAMIC,
446 RTF_MODIFIED,
447#if ENABLE_FEATURE_IPV6
448 RTF_DEFAULT,
449 RTF_ADDRCONF,
450 RTF_CACHE
451#endif
452};
453
454#define IPV4_MASK (RTF_GATEWAY|RTF_HOST|RTF_REINSTATE|RTF_DYNAMIC|RTF_MODIFIED)
455#define IPV6_MASK (RTF_GATEWAY|RTF_HOST|RTF_DEFAULT|RTF_ADDRCONF|RTF_CACHE)
456
457/* Must agree with flagvals[]. */
458static const char flagchars[] ALIGN1 =
459 "GHRDM"
460#if ENABLE_FEATURE_IPV6
461 "DAC"
462#endif
463;
464
465static void set_flags(char *flagstr, int flags)
466{
467 int i;
468
469 *flagstr++ = 'U';
470
471 for (i = 0; (*flagstr = flagchars[i]) != 0; i++) {
472 if (flags & flagvals[i]) {
473 ++flagstr;
474 }
475 }
476}
477
478/* also used in netstat */
479void bb_displayroutes(int noresolve, int netstatfmt)
480{
481 char devname[64], flags[16], *sdest, *sgw;
482 unsigned long d, g, m;
483 int flgs, ref, use, metric, mtu, win, ir;
484 struct sockaddr_in s_addr;
485 struct in_addr mask;
486
487 FILE *fp = xfopen("/proc/net/route", "r");
488
489 printf("Kernel IP routing table\n"
490 "Destination Gateway Genmask Flags %s Iface\n",
491 netstatfmt ? " MSS Window irtt" : "Metric Ref Use");
492
493 if (fscanf(fp, "%*[^\n]\n") < 0) { /* Skip the first line. */
494 goto ERROR; /* Empty or missing line, or read error. */
495 }
496 while (1) {
497 int r;
498 r = fscanf(fp, "%63s%lx%lx%X%d%d%d%lx%d%d%d\n",
499 devname, &d, &g, &flgs, &ref, &use, &metric, &m,
500 &mtu, &win, &ir);
501 if (r != 11) {
502 if ((r < 0) && feof(fp)) { /* EOF with no (nonspace) chars read. */
503 break;
504 }
505 ERROR:
506 bb_error_msg_and_die("fscanf");
507 }
508
509 if (!(flgs & RTF_UP)) { /* Skip interfaces that are down. */
510 continue;
511 }
512
513 set_flags(flags, (flgs & IPV4_MASK));
514#ifdef RTF_REJECT
515 if (flgs & RTF_REJECT) {
516 flags[0] = '!';
517 }
518#endif
519
520 memset(&s_addr, 0, sizeof(struct sockaddr_in));
521 s_addr.sin_family = AF_INET;
522 s_addr.sin_addr.s_addr = d;
523 sdest = INET_rresolve(&s_addr, (noresolve | 0x8000), m); /* 'default' instead of '*' */
524 s_addr.sin_addr.s_addr = g;
525 sgw = INET_rresolve(&s_addr, (noresolve | 0x4000), m); /* Host instead of net */
526 mask.s_addr = m;
527 /* "%15.15s" truncates hostnames, do we really want that? */
528 printf("%-15.15s %-15.15s %-16s%-6s", sdest, sgw, inet_ntoa(mask), flags);
529 free(sdest);
530 free(sgw);
531 if (netstatfmt) {
532 printf("%5d %-5d %6d %s\n", mtu, win, ir, devname);
533 } else {
534 printf("%-6d %-2d %7d %s\n", metric, ref, use, devname);
535 }
536 }
537}
538
539#if ENABLE_FEATURE_IPV6
540
541static void INET6_displayroutes(int noresolve)
542{
543 char addr6[128], *naddr6;
544 /* In addr6x, we store both 40-byte ':'-delimited ipv6 addresses.
545 * We read the non-delimited strings into the tail of the buffer
546 * using fscanf and then modify the buffer by shifting forward
547 * while inserting ':'s and the nul terminator for the first string.
548 * Hence the strings are at addr6x and addr6x+40. This generates
549 * _much_ less code than the previous (upstream) approach. */
550 char addr6x[80];
551 char iface[16], flags[16];
552 int iflags, metric, refcnt, use, prefix_len, slen;
553 struct sockaddr_in6 snaddr6;
554
555 FILE *fp = xfopen("/proc/net/ipv6_route", "r");
556
557 printf("Kernel IPv6 routing table\n%-44s%-40s"
558 "Flags Metric Ref Use Iface\n",
559 "Destination", "Next Hop");
560
561 while (1) {
562 int r;
563 r = fscanf(fp, "%32s%x%*s%x%32s%x%x%x%x%s\n",
564 addr6x+14, &prefix_len, &slen, addr6x+40+7,
565 &metric, &use, &refcnt, &iflags, iface);
566 if (r != 9) {
567 if ((r < 0) && feof(fp)) { /* EOF with no (nonspace) chars read. */
568 break;
569 }
570 ERROR:
571 bb_error_msg_and_die("fscanf");
572 }
573
574 /* Do the addr6x shift-and-insert changes to ':'-delimit addresses.
575 * For now, always do this to validate the proc route format, even
576 * if the interface is down. */
577 {
578 int i = 0;
579 char *p = addr6x+14;
580
581 do {
582 if (!*p) {
583 if (i == 40) { /* nul terminator for 1st address? */
584 addr6x[39] = 0; /* Fixup... need 0 instead of ':'. */
585 ++p; /* Skip and continue. */
586 continue;
587 }
588 goto ERROR;
589 }
590 addr6x[i++] = *p++;
591 if (!((i+1) % 5)) {
592 addr6x[i++] = ':';
593 }
594 } while (i < 40+28+7);
595 }
596
597 if (!(iflags & RTF_UP)) { /* Skip interfaces that are down. */
598 continue;
599 }
600
601 set_flags(flags, (iflags & IPV6_MASK));
602
603 r = 0;
604 do {
605 inet_pton(AF_INET6, addr6x + r,
606 (struct sockaddr *) &snaddr6.sin6_addr);
607 snaddr6.sin6_family = AF_INET6;
608 naddr6 = INET6_rresolve((struct sockaddr_in6 *) &snaddr6,
609 0x0fff /* Apparently, upstream never resolves. */
610 );
611
612 if (!r) { /* 1st pass */
613 snprintf(addr6, sizeof(addr6), "%s/%d", naddr6, prefix_len);
614 r += 40;
615 free(naddr6);
616 } else { /* 2nd pass */
617 /* Print the info. */
618 printf("%-43s %-39s %-5s %-6d %-2d %7d %-8s\n",
619 addr6, naddr6, flags, metric, refcnt, use, iface);
620 free(naddr6);
621 break;
622 }
623 } while (1);
624 }
625}
626
627#endif
628
629#define ROUTE_OPT_A 0x01
630#define ROUTE_OPT_n 0x02
631#define ROUTE_OPT_e 0x04
632#define ROUTE_OPT_INET6 0x08 /* Not an actual option. See below. */
633
634/* 1st byte is offset to next entry offset. 2nd byte is return value. */
635/* 2nd byte matches RTACTION_* code */
636static const char tbl_verb[] ALIGN1 =
637 "\006\001add\0"
638 "\006\002del\0"
639/* "\011\002delete\0" */
640 "\010\002delete" /* Since it's last, we can save a byte. */
641;
642
643int route_main(int argc, char **argv);
644int route_main(int argc, char **argv)
645{
646 unsigned opt;
647 int what;
648 char *family;
649 char **p;
650
651 /* First, remap '-net' and '-host' to avoid getopt problems. */
652 p = argv;
653 while (*++p) {
654 if (strcmp(*p, "-net") == 0 || strcmp(*p, "-host") == 0) {
655 p[0][0] = '#';
656 }
657 }
658
659 opt = getopt32(argv, "A:ne", &family);
660
661 if ((opt & ROUTE_OPT_A) && strcmp(family, "inet") != 0) {
662#if ENABLE_FEATURE_IPV6
663 if (strcmp(family, "inet6") == 0) {
664 opt |= ROUTE_OPT_INET6; /* Set flag for ipv6. */
665 } else
666#endif
667 bb_show_usage();
668 }
669
670 argv += optind;
671
672 /* No more args means display the routing table. */
673 if (!*argv) {
674 int noresolve = (opt & ROUTE_OPT_n) ? 0x0fff : 0;
675#if ENABLE_FEATURE_IPV6
676 if (opt & ROUTE_OPT_INET6)
677 INET6_displayroutes(noresolve);
678 else
679#endif
680 bb_displayroutes(noresolve, opt & ROUTE_OPT_e);
681
682 fflush_stdout_and_exit(EXIT_SUCCESS);
683 }
684
685 /* Check verb. At the moment, must be add, del, or delete. */
686 what = kw_lookup(tbl_verb, &argv);
687 if (!what || !*argv) { /* Unknown verb or no more args. */
688 bb_show_usage();
689 }
690
691#if ENABLE_FEATURE_IPV6
692 if (opt & ROUTE_OPT_INET6)
693 INET6_setroute(what, argv);
694 else
695#endif
696 INET_setroute(what, argv);
697
698 return EXIT_SUCCESS;
699}
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