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Commit | Line | Data |
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aba5acdf SH |
1 | /* |
2 | * ipneigh.c "ip neigh". | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | * | |
aba5acdf SH |
11 | */ |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
16 | #include <syslog.h> | |
17 | #include <fcntl.h> | |
18 | #include <string.h> | |
19 | #include <sys/time.h> | |
aba5acdf SH |
20 | #include <sys/socket.h> |
21 | #include <netinet/in.h> | |
22 | #include <netinet/ip.h> | |
23 | ||
24 | #include "rt_names.h" | |
25 | #include "utils.h" | |
26 | #include "ip_common.h" | |
27 | ||
28 | #define NUD_VALID (NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE|NUD_PROBE|NUD_STALE|NUD_DELAY) | |
66081849 | 29 | #define MAX_ROUNDS 10 |
aba5acdf SH |
30 | |
31 | static struct | |
32 | { | |
33 | int family; | |
56f5daac | 34 | int index; |
aba5acdf SH |
35 | int state; |
36 | int unused_only; | |
37 | inet_prefix pfx; | |
38 | int flushed; | |
39 | char *flushb; | |
40 | int flushp; | |
41 | int flushe; | |
0d238ca2 | 42 | int master; |
aba5acdf SH |
43 | } filter; |
44 | ||
45 | static void usage(void) __attribute__((noreturn)); | |
46 | ||
47 | static void usage(void) | |
48 | { | |
03a0cf20 PS |
49 | fprintf(stderr, "Usage: ip neigh { add | del | change | replace }\n" |
50 | " { ADDR [ lladdr LLADDR ] [ nud STATE ] | proxy ADDR } [ dev DEV ]\n"); | |
51 | fprintf(stderr, " ip neigh { show | flush } [ proxy ] [ to PREFIX ] [ dev DEV ] [ nud STATE ]\n\n"); | |
52 | fprintf(stderr, "STATE := { permanent | noarp | stale | reachable | none |\n" | |
56f5daac | 53 | " incomplete | delay | probe | failed }\n"); |
aba5acdf SH |
54 | exit(-1); |
55 | } | |
56 | ||
56f5daac | 57 | static int nud_state_a2n(unsigned int *state, const char *arg) |
aba5acdf SH |
58 | { |
59 | if (matches(arg, "permanent") == 0) | |
60 | *state = NUD_PERMANENT; | |
61 | else if (matches(arg, "reachable") == 0) | |
62 | *state = NUD_REACHABLE; | |
63 | else if (strcmp(arg, "noarp") == 0) | |
64 | *state = NUD_NOARP; | |
65 | else if (strcmp(arg, "none") == 0) | |
66 | *state = NUD_NONE; | |
67 | else if (strcmp(arg, "stale") == 0) | |
68 | *state = NUD_STALE; | |
69 | else if (strcmp(arg, "incomplete") == 0) | |
70 | *state = NUD_INCOMPLETE; | |
71 | else if (strcmp(arg, "delay") == 0) | |
72 | *state = NUD_DELAY; | |
73 | else if (strcmp(arg, "probe") == 0) | |
74 | *state = NUD_PROBE; | |
75 | else if (matches(arg, "failed") == 0) | |
76 | *state = NUD_FAILED; | |
77 | else { | |
78 | if (get_unsigned(state, arg, 0)) | |
79 | return -1; | |
56f5daac | 80 | if (*state >= 0x100 || (*state&((*state)-1))) |
aba5acdf SH |
81 | return -1; |
82 | } | |
83 | return 0; | |
84 | } | |
85 | ||
aba5acdf SH |
86 | static int flush_update(void) |
87 | { | |
f31a37f7 | 88 | if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) { |
1fb0a998 | 89 | perror("Failed to send flush request"); |
aba5acdf SH |
90 | return -1; |
91 | } | |
92 | filter.flushp = 0; | |
93 | return 0; | |
94 | } | |
95 | ||
96 | ||
97 | static int ipneigh_modify(int cmd, int flags, int argc, char **argv) | |
98 | { | |
aba5acdf | 99 | struct { |
4806867a SH |
100 | struct nlmsghdr n; |
101 | struct ndmsg ndm; | |
56f5daac | 102 | char buf[256]; |
aba5acdf | 103 | } req; |
e834eb8e | 104 | char *dev = NULL; |
aba5acdf | 105 | int dst_ok = 0; |
e834eb8e | 106 | int dev_ok = 0; |
aba5acdf | 107 | int lladdr_ok = 0; |
56f5daac | 108 | char *lla = NULL; |
aba5acdf SH |
109 | inet_prefix dst; |
110 | ||
111 | memset(&req, 0, sizeof(req)); | |
112 | ||
113 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)); | |
114 | req.n.nlmsg_flags = NLM_F_REQUEST|flags; | |
115 | req.n.nlmsg_type = cmd; | |
116 | req.ndm.ndm_family = preferred_family; | |
117 | req.ndm.ndm_state = NUD_PERMANENT; | |
118 | ||
119 | while (argc > 0) { | |
120 | if (matches(*argv, "lladdr") == 0) { | |
121 | NEXT_ARG(); | |
122 | if (lladdr_ok) | |
123 | duparg("lladdr", *argv); | |
124 | lla = *argv; | |
125 | lladdr_ok = 1; | |
126 | } else if (strcmp(*argv, "nud") == 0) { | |
56f5daac SH |
127 | unsigned int state; |
128 | ||
aba5acdf SH |
129 | NEXT_ARG(); |
130 | if (nud_state_a2n(&state, *argv)) | |
131 | invarg("nud state is bad", *argv); | |
132 | req.ndm.ndm_state = state; | |
133 | } else if (matches(*argv, "proxy") == 0) { | |
134 | NEXT_ARG(); | |
135 | if (matches(*argv, "help") == 0) | |
136 | usage(); | |
137 | if (dst_ok) | |
138 | duparg("address", *argv); | |
139 | get_addr(&dst, *argv, preferred_family); | |
140 | dst_ok = 1; | |
e834eb8e | 141 | dev_ok = 1; |
aba5acdf SH |
142 | req.ndm.ndm_flags |= NTF_PROXY; |
143 | } else if (strcmp(*argv, "dev") == 0) { | |
144 | NEXT_ARG(); | |
e834eb8e KK |
145 | dev = *argv; |
146 | dev_ok = 1; | |
aba5acdf SH |
147 | } else { |
148 | if (strcmp(*argv, "to") == 0) { | |
149 | NEXT_ARG(); | |
150 | } | |
151 | if (matches(*argv, "help") == 0) { | |
152 | NEXT_ARG(); | |
153 | } | |
154 | if (dst_ok) | |
155 | duparg2("to", *argv); | |
156 | get_addr(&dst, *argv, preferred_family); | |
157 | dst_ok = 1; | |
158 | } | |
159 | argc--; argv++; | |
160 | } | |
e834eb8e | 161 | if (!dev_ok || !dst_ok || dst.family == AF_UNSPEC) { |
aba5acdf SH |
162 | fprintf(stderr, "Device and destination are required arguments.\n"); |
163 | exit(-1); | |
164 | } | |
165 | req.ndm.ndm_family = dst.family; | |
542b0cc7 SH |
166 | if (addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen) < 0) |
167 | return -1; | |
aba5acdf SH |
168 | |
169 | if (lla && strcmp(lla, "null")) { | |
7b565754 | 170 | char llabuf[20]; |
aba5acdf SH |
171 | int l; |
172 | ||
173 | l = ll_addr_a2n(llabuf, sizeof(llabuf), lla); | |
542b0cc7 SH |
174 | if (l < 0) |
175 | return -1; | |
176 | ||
177 | if (addattr_l(&req.n, sizeof(req), NDA_LLADDR, llabuf, l) < 0) | |
178 | return -1; | |
aba5acdf SH |
179 | } |
180 | ||
aba5acdf SH |
181 | ll_init_map(&rth); |
182 | ||
e834eb8e KK |
183 | if (dev && (req.ndm.ndm_ifindex = ll_name_to_index(dev)) == 0) { |
184 | fprintf(stderr, "Cannot find device \"%s\"\n", dev); | |
aba5acdf SH |
185 | return -1; |
186 | } | |
187 | ||
c079e121 | 188 | if (rtnl_talk(&rth, &req.n, NULL, 0) < 0) |
aba5acdf SH |
189 | exit(2); |
190 | ||
351efcde | 191 | return 0; |
aba5acdf SH |
192 | } |
193 | ||
194 | ||
50772dc5 | 195 | int print_neigh(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) |
aba5acdf | 196 | { |
56f5daac | 197 | FILE *fp = (FILE *)arg; |
aba5acdf SH |
198 | struct ndmsg *r = NLMSG_DATA(n); |
199 | int len = n->nlmsg_len; | |
56f5daac | 200 | struct rtattr *tb[NDA_MAX+1]; |
0d238ca2 | 201 | static int logit = 1; |
aba5acdf | 202 | |
1556e29d DS |
203 | if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH && |
204 | n->nlmsg_type != RTM_GETNEIGH) { | |
aba5acdf SH |
205 | fprintf(stderr, "Not RTM_NEWNEIGH: %08x %08x %08x\n", |
206 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); | |
ae665a52 | 207 | |
aba5acdf SH |
208 | return 0; |
209 | } | |
210 | len -= NLMSG_LENGTH(sizeof(*r)); | |
211 | if (len < 0) { | |
212 | fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); | |
213 | return -1; | |
214 | } | |
215 | ||
216 | if (filter.flushb && n->nlmsg_type != RTM_NEWNEIGH) | |
217 | return 0; | |
218 | ||
219 | if (filter.family && filter.family != r->ndm_family) | |
220 | return 0; | |
221 | if (filter.index && filter.index != r->ndm_ifindex) | |
222 | return 0; | |
223 | if (!(filter.state&r->ndm_state) && | |
1dac7817 | 224 | !(r->ndm_flags & NTF_PROXY) && |
aba5acdf | 225 | (r->ndm_state || !(filter.state&0x100)) && |
56f5daac | 226 | (r->ndm_family != AF_DECnet)) |
aba5acdf SH |
227 | return 0; |
228 | ||
0d238ca2 DA |
229 | if (filter.master && !(n->nlmsg_flags & NLM_F_DUMP_FILTERED)) { |
230 | if (logit) { | |
231 | logit = 0; | |
232 | fprintf(fp, | |
233 | "\nWARNING: Kernel does not support filtering by master device\n\n"); | |
234 | } | |
235 | } | |
236 | ||
aba5acdf SH |
237 | parse_rtattr(tb, NDA_MAX, NDA_RTA(r), n->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); |
238 | ||
239 | if (tb[NDA_DST]) { | |
240 | if (filter.pfx.family) { | |
241 | inet_prefix dst; | |
56f5daac | 242 | |
aba5acdf SH |
243 | memset(&dst, 0, sizeof(dst)); |
244 | dst.family = r->ndm_family; | |
245 | memcpy(&dst.data, RTA_DATA(tb[NDA_DST]), RTA_PAYLOAD(tb[NDA_DST])); | |
246 | if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) | |
247 | return 0; | |
248 | } | |
249 | } | |
250 | if (filter.unused_only && tb[NDA_CACHEINFO]) { | |
251 | struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]); | |
56f5daac | 252 | |
aba5acdf SH |
253 | if (ci->ndm_refcnt) |
254 | return 0; | |
255 | } | |
256 | ||
257 | if (filter.flushb) { | |
258 | struct nlmsghdr *fn; | |
56f5daac | 259 | |
aba5acdf SH |
260 | if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) { |
261 | if (flush_update()) | |
262 | return -1; | |
263 | } | |
56f5daac | 264 | fn = (struct nlmsghdr *)(filter.flushb + NLMSG_ALIGN(filter.flushp)); |
aba5acdf SH |
265 | memcpy(fn, n, n->nlmsg_len); |
266 | fn->nlmsg_type = RTM_DELNEIGH; | |
267 | fn->nlmsg_flags = NLM_F_REQUEST; | |
351efcde | 268 | fn->nlmsg_seq = ++rth.seq; |
56f5daac | 269 | filter.flushp = (((char *)fn) + n->nlmsg_len) - filter.flushb; |
aba5acdf SH |
270 | filter.flushed++; |
271 | if (show_stats < 2) | |
272 | return 0; | |
273 | } | |
274 | ||
6ea3ebaf | 275 | if (n->nlmsg_type == RTM_DELNEIGH) |
39ca4879 | 276 | fprintf(fp, "Deleted "); |
1556e29d DS |
277 | else if (n->nlmsg_type == RTM_GETNEIGH) |
278 | fprintf(fp, "miss "); | |
aba5acdf | 279 | if (tb[NDA_DST]) { |
ae665a52 | 280 | fprintf(fp, "%s ", |
aba5acdf SH |
281 | format_host(r->ndm_family, |
282 | RTA_PAYLOAD(tb[NDA_DST]), | |
a418e451 | 283 | RTA_DATA(tb[NDA_DST]))); |
aba5acdf SH |
284 | } |
285 | if (!filter.index && r->ndm_ifindex) | |
286 | fprintf(fp, "dev %s ", ll_index_to_name(r->ndm_ifindex)); | |
287 | if (tb[NDA_LLADDR]) { | |
288 | SPRINT_BUF(b1); | |
289 | fprintf(fp, "lladdr %s", ll_addr_n2a(RTA_DATA(tb[NDA_LLADDR]), | |
290 | RTA_PAYLOAD(tb[NDA_LLADDR]), | |
291 | ll_index_to_type(r->ndm_ifindex), | |
292 | b1, sizeof(b1))); | |
293 | } | |
294 | if (r->ndm_flags & NTF_ROUTER) { | |
295 | fprintf(fp, " router"); | |
296 | } | |
1dac7817 TZ |
297 | if (r->ndm_flags & NTF_PROXY) { |
298 | fprintf(fp, " proxy"); | |
299 | } | |
aba5acdf | 300 | if (tb[NDA_CACHEINFO] && show_stats) { |
aba5acdf | 301 | struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]); |
6a34d291 SH |
302 | int hz = get_user_hz(); |
303 | ||
aba5acdf SH |
304 | if (ci->ndm_refcnt) |
305 | printf(" ref %d", ci->ndm_refcnt); | |
306 | fprintf(fp, " used %d/%d/%d", ci->ndm_used/hz, | |
307 | ci->ndm_confirmed/hz, ci->ndm_updated/hz); | |
308 | } | |
309 | ||
69410a49 | 310 | if (tb[NDA_PROBES] && show_stats) { |
ff24746c | 311 | __u32 p = rta_getattr_u32(tb[NDA_PROBES]); |
56f5daac | 312 | |
69410a49 | 313 | fprintf(fp, " probes %u", p); |
314 | } | |
315 | ||
aba5acdf | 316 | if (r->ndm_state) { |
435ac6b8 | 317 | int nud = r->ndm_state; |
56f5daac | 318 | |
435ac6b8 | 319 | fprintf(fp, " "); |
320 | ||
321 | #define PRINT_FLAG(f) if (nud & NUD_##f) { \ | |
322 | nud &= ~NUD_##f; fprintf(fp, #f "%s", nud ? "," : ""); } | |
323 | PRINT_FLAG(INCOMPLETE); | |
324 | PRINT_FLAG(REACHABLE); | |
325 | PRINT_FLAG(STALE); | |
326 | PRINT_FLAG(DELAY); | |
327 | PRINT_FLAG(PROBE); | |
328 | PRINT_FLAG(FAILED); | |
329 | PRINT_FLAG(NOARP); | |
330 | PRINT_FLAG(PERMANENT); | |
331 | #undef PRINT_FLAG | |
aba5acdf SH |
332 | } |
333 | fprintf(fp, "\n"); | |
334 | ||
335 | fflush(fp); | |
336 | return 0; | |
337 | } | |
338 | ||
093b7646 | 339 | void ipneigh_reset_filter(int ifindex) |
aba5acdf SH |
340 | { |
341 | memset(&filter, 0, sizeof(filter)); | |
342 | filter.state = ~0; | |
093b7646 | 343 | filter.index = ifindex; |
aba5acdf SH |
344 | } |
345 | ||
d1f28cf1 | 346 | static int do_show_or_flush(int argc, char **argv, int flush) |
aba5acdf | 347 | { |
0d238ca2 DA |
348 | struct { |
349 | struct nlmsghdr n; | |
350 | struct ndmsg ndm; | |
56f5daac | 351 | char buf[256]; |
0d238ca2 | 352 | } req; |
aba5acdf | 353 | char *filter_dev = NULL; |
aba5acdf | 354 | int state_given = 0; |
0d238ca2 DA |
355 | |
356 | memset(&req, 0, sizeof(req)); | |
357 | ||
358 | req.n.nlmsg_type = RTM_GETNEIGH; | |
359 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)); | |
aba5acdf | 360 | |
093b7646 | 361 | ipneigh_reset_filter(0); |
aba5acdf SH |
362 | |
363 | if (!filter.family) | |
364 | filter.family = preferred_family; | |
365 | ||
366 | if (flush) { | |
367 | if (argc <= 0) { | |
368 | fprintf(stderr, "Flush requires arguments.\n"); | |
369 | return -1; | |
370 | } | |
371 | filter.state = ~(NUD_PERMANENT|NUD_NOARP); | |
372 | } else | |
373 | filter.state = 0xFF & ~NUD_NOARP; | |
374 | ||
375 | while (argc > 0) { | |
376 | if (strcmp(*argv, "dev") == 0) { | |
377 | NEXT_ARG(); | |
378 | if (filter_dev) | |
379 | duparg("dev", *argv); | |
380 | filter_dev = *argv; | |
0d238ca2 DA |
381 | } else if (strcmp(*argv, "master") == 0) { |
382 | int ifindex; | |
56f5daac | 383 | |
0d238ca2 DA |
384 | NEXT_ARG(); |
385 | ifindex = ll_name_to_index(*argv); | |
386 | if (!ifindex) | |
387 | invarg("Device does not exist\n", *argv); | |
388 | addattr32(&req.n, sizeof(req), NDA_MASTER, ifindex); | |
389 | filter.master = ifindex; | |
aba5acdf SH |
390 | } else if (strcmp(*argv, "unused") == 0) { |
391 | filter.unused_only = 1; | |
392 | } else if (strcmp(*argv, "nud") == 0) { | |
56f5daac SH |
393 | unsigned int state; |
394 | ||
aba5acdf SH |
395 | NEXT_ARG(); |
396 | if (!state_given) { | |
397 | state_given = 1; | |
398 | filter.state = 0; | |
399 | } | |
400 | if (nud_state_a2n(&state, *argv)) { | |
401 | if (strcmp(*argv, "all") != 0) | |
402 | invarg("nud state is bad", *argv); | |
403 | state = ~0; | |
404 | if (flush) | |
405 | state &= ~NUD_NOARP; | |
406 | } | |
407 | if (state == 0) | |
408 | state = 0x100; | |
409 | filter.state |= state; | |
1dac7817 | 410 | } else if (strcmp(*argv, "proxy") == 0) |
0d238ca2 | 411 | req.ndm.ndm_flags = NTF_PROXY; |
1dac7817 | 412 | else { |
aba5acdf SH |
413 | if (strcmp(*argv, "to") == 0) { |
414 | NEXT_ARG(); | |
415 | } | |
416 | if (matches(*argv, "help") == 0) | |
417 | usage(); | |
418 | get_prefix(&filter.pfx, *argv, filter.family); | |
419 | if (filter.family == AF_UNSPEC) | |
420 | filter.family = filter.pfx.family; | |
421 | } | |
422 | argc--; argv++; | |
423 | } | |
424 | ||
aba5acdf SH |
425 | ll_init_map(&rth); |
426 | ||
427 | if (filter_dev) { | |
428 | if ((filter.index = ll_name_to_index(filter_dev)) == 0) { | |
429 | fprintf(stderr, "Cannot find device \"%s\"\n", filter_dev); | |
430 | return -1; | |
431 | } | |
b8c75324 | 432 | addattr32(&req.n, sizeof(req), NDA_IFINDEX, filter.index); |
aba5acdf SH |
433 | } |
434 | ||
435 | if (flush) { | |
436 | int round = 0; | |
437 | char flushb[4096-512]; | |
438 | ||
439 | filter.flushb = flushb; | |
440 | filter.flushp = 0; | |
441 | filter.flushe = sizeof(flushb); | |
aba5acdf SH |
442 | filter.state &= ~NUD_FAILED; |
443 | ||
66081849 | 444 | while (round < MAX_ROUNDS) { |
aba5acdf SH |
445 | if (rtnl_wilddump_request(&rth, filter.family, RTM_GETNEIGH) < 0) { |
446 | perror("Cannot send dump request"); | |
447 | exit(1); | |
448 | } | |
449 | filter.flushed = 0; | |
cd70f3f5 | 450 | if (rtnl_dump_filter(&rth, print_neigh, stdout) < 0) { |
aba5acdf SH |
451 | fprintf(stderr, "Flush terminated\n"); |
452 | exit(1); | |
453 | } | |
454 | if (filter.flushed == 0) { | |
f0b34d2d AH |
455 | if (show_stats) { |
456 | if (round == 0) | |
457 | printf("Nothing to flush.\n"); | |
458 | else | |
56f5daac | 459 | printf("*** Flush is complete after %d round%s ***\n", round, round > 1?"s":""); |
f0b34d2d | 460 | } |
aba5acdf SH |
461 | fflush(stdout); |
462 | return 0; | |
463 | } | |
464 | round++; | |
465 | if (flush_update() < 0) | |
466 | exit(1); | |
467 | if (show_stats) { | |
468 | printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed); | |
469 | fflush(stdout); | |
470 | } | |
471 | } | |
66081849 SH |
472 | printf("*** Flush not complete bailing out after %d rounds\n", |
473 | MAX_ROUNDS); | |
474 | return 1; | |
aba5acdf SH |
475 | } |
476 | ||
0d238ca2 | 477 | req.ndm.ndm_family = filter.family; |
1dac7817 | 478 | |
0d238ca2 | 479 | if (rtnl_dump_request_n(&rth, &req.n) < 0) { |
aba5acdf SH |
480 | perror("Cannot send dump request"); |
481 | exit(1); | |
482 | } | |
483 | ||
cd70f3f5 | 484 | if (rtnl_dump_filter(&rth, print_neigh, stdout) < 0) { |
aba5acdf SH |
485 | fprintf(stderr, "Dump terminated\n"); |
486 | exit(1); | |
487 | } | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
492 | int do_ipneigh(int argc, char **argv) | |
493 | { | |
494 | if (argc > 0) { | |
495 | if (matches(*argv, "add") == 0) | |
496 | return ipneigh_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1); | |
497 | if (matches(*argv, "change") == 0 || | |
498 | strcmp(*argv, "chg") == 0) | |
499 | return ipneigh_modify(RTM_NEWNEIGH, NLM_F_REPLACE, argc-1, argv+1); | |
500 | if (matches(*argv, "replace") == 0) | |
501 | return ipneigh_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1); | |
502 | if (matches(*argv, "delete") == 0) | |
503 | return ipneigh_modify(RTM_DELNEIGH, 0, argc-1, argv+1); | |
504 | if (matches(*argv, "get") == 0) { | |
505 | fprintf(stderr, "Sorry, \"neigh get\" is not implemented :-(\n"); | |
506 | return -1; | |
507 | } | |
508 | if (matches(*argv, "show") == 0 || | |
509 | matches(*argv, "lst") == 0 || | |
510 | matches(*argv, "list") == 0) | |
511 | return do_show_or_flush(argc-1, argv+1, 0); | |
512 | if (matches(*argv, "flush") == 0) | |
513 | return do_show_or_flush(argc-1, argv+1, 1); | |
514 | if (matches(*argv, "help") == 0) | |
515 | usage(); | |
516 | } else | |
517 | return do_show_or_flush(0, NULL, 0); | |
518 | ||
519 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip neigh help\".\n", *argv); | |
520 | exit(-1); | |
521 | } |