osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 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 | * |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 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> |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 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) |
shemminger | 6608184 | 2005-08-16 21:10:51 +0000 | [diff] [blame] | 29 | #define MAX_ROUNDS 10 |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 30 | |
| 31 | static struct |
| 32 | { |
| 33 | int family; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 34 | int index; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 35 | int state; |
| 36 | int unused_only; |
| 37 | inet_prefix pfx; |
| 38 | int flushed; |
| 39 | char *flushb; |
| 40 | int flushp; |
| 41 | int flushe; |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 42 | int master; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 43 | } filter; |
| 44 | |
| 45 | static void usage(void) __attribute__((noreturn)); |
| 46 | |
| 47 | static void usage(void) |
| 48 | { |
Phil Sutter | 03a0cf2 | 2016-03-04 20:07:21 +0100 | [diff] [blame] | 49 | fprintf(stderr, "Usage: ip neigh { add | del | change | replace }\n" |
| 50 | " { ADDR [ lladdr LLADDR ] [ nud STATE ] | proxy ADDR } [ dev DEV ]\n"); |
David Ahern | 5db1ada | 2016-06-29 11:26:59 -0700 | [diff] [blame] | 51 | fprintf(stderr, " ip neigh { show | flush } [ proxy ] [ to PREFIX ] [ dev DEV ] [ nud STATE ]\n"); |
| 52 | fprintf(stderr, " [ vrf NAME ]\n\n"); |
Phil Sutter | 03a0cf2 | 2016-03-04 20:07:21 +0100 | [diff] [blame] | 53 | fprintf(stderr, "STATE := { permanent | noarp | stale | reachable | none |\n" |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 54 | " incomplete | delay | probe | failed }\n"); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 55 | exit(-1); |
| 56 | } |
| 57 | |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 58 | static int nud_state_a2n(unsigned int *state, const char *arg) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 59 | { |
| 60 | if (matches(arg, "permanent") == 0) |
| 61 | *state = NUD_PERMANENT; |
| 62 | else if (matches(arg, "reachable") == 0) |
| 63 | *state = NUD_REACHABLE; |
| 64 | else if (strcmp(arg, "noarp") == 0) |
| 65 | *state = NUD_NOARP; |
| 66 | else if (strcmp(arg, "none") == 0) |
| 67 | *state = NUD_NONE; |
| 68 | else if (strcmp(arg, "stale") == 0) |
| 69 | *state = NUD_STALE; |
| 70 | else if (strcmp(arg, "incomplete") == 0) |
| 71 | *state = NUD_INCOMPLETE; |
| 72 | else if (strcmp(arg, "delay") == 0) |
| 73 | *state = NUD_DELAY; |
| 74 | else if (strcmp(arg, "probe") == 0) |
| 75 | *state = NUD_PROBE; |
| 76 | else if (matches(arg, "failed") == 0) |
| 77 | *state = NUD_FAILED; |
| 78 | else { |
| 79 | if (get_unsigned(state, arg, 0)) |
| 80 | return -1; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 81 | if (*state >= 0x100 || (*state&((*state)-1))) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 82 | return -1; |
| 83 | } |
| 84 | return 0; |
| 85 | } |
| 86 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 87 | static int flush_update(void) |
| 88 | { |
Stephen Hemminger | f31a37f | 2008-01-31 21:38:58 -0800 | [diff] [blame] | 89 | if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) { |
Stephen Hemminger | 1fb0a99 | 2008-01-26 11:08:31 -0800 | [diff] [blame] | 90 | perror("Failed to send flush request"); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 91 | return -1; |
| 92 | } |
| 93 | filter.flushp = 0; |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | |
| 98 | static int ipneigh_modify(int cmd, int flags, int argc, char **argv) |
| 99 | { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 100 | struct { |
Stephen Hemminger | 4806867 | 2014-02-17 10:56:31 -0800 | [diff] [blame] | 101 | struct nlmsghdr n; |
| 102 | struct ndmsg ndm; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 103 | char buf[256]; |
Phil Sutter | d17b136 | 2016-07-18 16:48:42 +0200 | [diff] [blame] | 104 | } req = { |
| 105 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)), |
| 106 | .n.nlmsg_flags = NLM_F_REQUEST | flags, |
| 107 | .n.nlmsg_type = cmd, |
| 108 | .ndm.ndm_family = preferred_family, |
| 109 | .ndm.ndm_state = NUD_PERMANENT, |
| 110 | }; |
Konstantin Khlebnikov | e834eb8 | 2015-12-01 01:17:06 +0300 | [diff] [blame] | 111 | char *dev = NULL; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 112 | int dst_ok = 0; |
Konstantin Khlebnikov | e834eb8 | 2015-12-01 01:17:06 +0300 | [diff] [blame] | 113 | int dev_ok = 0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 114 | int lladdr_ok = 0; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 115 | char *lla = NULL; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 116 | inet_prefix dst; |
| 117 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 118 | while (argc > 0) { |
| 119 | if (matches(*argv, "lladdr") == 0) { |
| 120 | NEXT_ARG(); |
| 121 | if (lladdr_ok) |
| 122 | duparg("lladdr", *argv); |
| 123 | lla = *argv; |
| 124 | lladdr_ok = 1; |
| 125 | } else if (strcmp(*argv, "nud") == 0) { |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 126 | unsigned int state; |
| 127 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 128 | NEXT_ARG(); |
| 129 | if (nud_state_a2n(&state, *argv)) |
| 130 | invarg("nud state is bad", *argv); |
| 131 | req.ndm.ndm_state = state; |
| 132 | } else if (matches(*argv, "proxy") == 0) { |
| 133 | NEXT_ARG(); |
| 134 | if (matches(*argv, "help") == 0) |
| 135 | usage(); |
| 136 | if (dst_ok) |
| 137 | duparg("address", *argv); |
| 138 | get_addr(&dst, *argv, preferred_family); |
| 139 | dst_ok = 1; |
Konstantin Khlebnikov | e834eb8 | 2015-12-01 01:17:06 +0300 | [diff] [blame] | 140 | dev_ok = 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 141 | req.ndm.ndm_flags |= NTF_PROXY; |
| 142 | } else if (strcmp(*argv, "dev") == 0) { |
| 143 | NEXT_ARG(); |
Konstantin Khlebnikov | e834eb8 | 2015-12-01 01:17:06 +0300 | [diff] [blame] | 144 | dev = *argv; |
| 145 | dev_ok = 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 146 | } else { |
| 147 | if (strcmp(*argv, "to") == 0) { |
| 148 | NEXT_ARG(); |
| 149 | } |
| 150 | if (matches(*argv, "help") == 0) { |
| 151 | NEXT_ARG(); |
| 152 | } |
| 153 | if (dst_ok) |
| 154 | duparg2("to", *argv); |
| 155 | get_addr(&dst, *argv, preferred_family); |
| 156 | dst_ok = 1; |
| 157 | } |
| 158 | argc--; argv++; |
| 159 | } |
Konstantin Khlebnikov | e834eb8 | 2015-12-01 01:17:06 +0300 | [diff] [blame] | 160 | if (!dev_ok || !dst_ok || dst.family == AF_UNSPEC) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 161 | fprintf(stderr, "Device and destination are required arguments.\n"); |
| 162 | exit(-1); |
| 163 | } |
| 164 | req.ndm.ndm_family = dst.family; |
Stephen Hemminger | 542b0cc | 2015-01-13 18:06:16 -0800 | [diff] [blame] | 165 | if (addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen) < 0) |
| 166 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 167 | |
| 168 | if (lla && strcmp(lla, "null")) { |
shemminger | 7b56575 | 2006-03-21 23:57:50 +0000 | [diff] [blame] | 169 | char llabuf[20]; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 170 | int l; |
| 171 | |
| 172 | l = ll_addr_a2n(llabuf, sizeof(llabuf), lla); |
Stephen Hemminger | 542b0cc | 2015-01-13 18:06:16 -0800 | [diff] [blame] | 173 | if (l < 0) |
| 174 | return -1; |
| 175 | |
| 176 | if (addattr_l(&req.n, sizeof(req), NDA_LLADDR, llabuf, l) < 0) |
| 177 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 178 | } |
| 179 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 180 | ll_init_map(&rth); |
| 181 | |
Konstantin Khlebnikov | e834eb8 | 2015-12-01 01:17:06 +0300 | [diff] [blame] | 182 | if (dev && (req.ndm.ndm_ifindex = ll_name_to_index(dev)) == 0) { |
| 183 | fprintf(stderr, "Cannot find device \"%s\"\n", dev); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 184 | return -1; |
| 185 | } |
| 186 | |
Stephen Hemminger | c079e12 | 2015-05-27 12:26:14 -0700 | [diff] [blame] | 187 | if (rtnl_talk(&rth, &req.n, NULL, 0) < 0) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 188 | exit(2); |
| 189 | |
shemminger | 351efcd | 2005-09-01 19:21:50 +0000 | [diff] [blame] | 190 | return 0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | |
osdl.net!shemminger | 50772dc | 2004-12-07 21:48:29 +0000 | [diff] [blame] | 194 | int print_neigh(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 195 | { |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 196 | FILE *fp = (FILE *)arg; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 197 | struct ndmsg *r = NLMSG_DATA(n); |
| 198 | int len = n->nlmsg_len; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 199 | struct rtattr *tb[NDA_MAX+1]; |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 200 | static int logit = 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 201 | |
David L Stevens | 1556e29 | 2012-12-12 10:02:19 -0800 | [diff] [blame] | 202 | if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH && |
| 203 | n->nlmsg_type != RTM_GETNEIGH) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 204 | fprintf(stderr, "Not RTM_NEWNEIGH: %08x %08x %08x\n", |
| 205 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 206 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 207 | return 0; |
| 208 | } |
| 209 | len -= NLMSG_LENGTH(sizeof(*r)); |
| 210 | if (len < 0) { |
| 211 | fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); |
| 212 | return -1; |
| 213 | } |
| 214 | |
| 215 | if (filter.flushb && n->nlmsg_type != RTM_NEWNEIGH) |
| 216 | return 0; |
| 217 | |
| 218 | if (filter.family && filter.family != r->ndm_family) |
| 219 | return 0; |
| 220 | if (filter.index && filter.index != r->ndm_ifindex) |
| 221 | return 0; |
| 222 | if (!(filter.state&r->ndm_state) && |
Tony Zelenoff | 1dac781 | 2012-01-26 04:50:04 +0000 | [diff] [blame] | 223 | !(r->ndm_flags & NTF_PROXY) && |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 224 | (r->ndm_state || !(filter.state&0x100)) && |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 225 | (r->ndm_family != AF_DECnet)) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 226 | return 0; |
| 227 | |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 228 | if (filter.master && !(n->nlmsg_flags & NLM_F_DUMP_FILTERED)) { |
| 229 | if (logit) { |
| 230 | logit = 0; |
| 231 | fprintf(fp, |
| 232 | "\nWARNING: Kernel does not support filtering by master device\n\n"); |
| 233 | } |
| 234 | } |
| 235 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 236 | parse_rtattr(tb, NDA_MAX, NDA_RTA(r), n->nlmsg_len - NLMSG_LENGTH(sizeof(*r))); |
| 237 | |
| 238 | if (tb[NDA_DST]) { |
| 239 | if (filter.pfx.family) { |
Phil Sutter | d17b136 | 2016-07-18 16:48:42 +0200 | [diff] [blame] | 240 | inet_prefix dst = { .family = r->ndm_family }; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 241 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 242 | memcpy(&dst.data, RTA_DATA(tb[NDA_DST]), RTA_PAYLOAD(tb[NDA_DST])); |
| 243 | if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen)) |
| 244 | return 0; |
| 245 | } |
| 246 | } |
| 247 | if (filter.unused_only && tb[NDA_CACHEINFO]) { |
| 248 | struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]); |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 249 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 250 | if (ci->ndm_refcnt) |
| 251 | return 0; |
| 252 | } |
| 253 | |
| 254 | if (filter.flushb) { |
| 255 | struct nlmsghdr *fn; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 256 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 257 | if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) { |
| 258 | if (flush_update()) |
| 259 | return -1; |
| 260 | } |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 261 | fn = (struct nlmsghdr *)(filter.flushb + NLMSG_ALIGN(filter.flushp)); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 262 | memcpy(fn, n, n->nlmsg_len); |
| 263 | fn->nlmsg_type = RTM_DELNEIGH; |
| 264 | fn->nlmsg_flags = NLM_F_REQUEST; |
shemminger | 351efcd | 2005-09-01 19:21:50 +0000 | [diff] [blame] | 265 | fn->nlmsg_seq = ++rth.seq; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 266 | filter.flushp = (((char *)fn) + n->nlmsg_len) - filter.flushb; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 267 | filter.flushed++; |
| 268 | if (show_stats < 2) |
| 269 | return 0; |
| 270 | } |
| 271 | |
Nicolas Dichtel | 6ea3eba | 2012-10-08 09:48:23 -0700 | [diff] [blame] | 272 | if (n->nlmsg_type == RTM_DELNEIGH) |
Roopa Prabhu | 39ca487 | 2015-10-15 11:47:43 -0700 | [diff] [blame] | 273 | fprintf(fp, "Deleted "); |
David L Stevens | 1556e29 | 2012-12-12 10:02:19 -0800 | [diff] [blame] | 274 | else if (n->nlmsg_type == RTM_GETNEIGH) |
| 275 | fprintf(fp, "miss "); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 276 | if (tb[NDA_DST]) { |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 277 | fprintf(fp, "%s ", |
Phil Sutter | d49f934 | 2016-03-22 19:35:17 +0100 | [diff] [blame] | 278 | format_host_rta(r->ndm_family, tb[NDA_DST])); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 279 | } |
| 280 | if (!filter.index && r->ndm_ifindex) |
| 281 | fprintf(fp, "dev %s ", ll_index_to_name(r->ndm_ifindex)); |
| 282 | if (tb[NDA_LLADDR]) { |
| 283 | SPRINT_BUF(b1); |
| 284 | fprintf(fp, "lladdr %s", ll_addr_n2a(RTA_DATA(tb[NDA_LLADDR]), |
| 285 | RTA_PAYLOAD(tb[NDA_LLADDR]), |
| 286 | ll_index_to_type(r->ndm_ifindex), |
| 287 | b1, sizeof(b1))); |
| 288 | } |
| 289 | if (r->ndm_flags & NTF_ROUTER) { |
| 290 | fprintf(fp, " router"); |
| 291 | } |
Tony Zelenoff | 1dac781 | 2012-01-26 04:50:04 +0000 | [diff] [blame] | 292 | if (r->ndm_flags & NTF_PROXY) { |
| 293 | fprintf(fp, " proxy"); |
| 294 | } |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 295 | if (tb[NDA_CACHEINFO] && show_stats) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 296 | struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]); |
Stephen Hemminger | 6a34d29 | 2008-06-20 12:37:42 -0700 | [diff] [blame] | 297 | int hz = get_user_hz(); |
| 298 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 299 | if (ci->ndm_refcnt) |
| 300 | printf(" ref %d", ci->ndm_refcnt); |
| 301 | fprintf(fp, " used %d/%d/%d", ci->ndm_used/hz, |
| 302 | ci->ndm_confirmed/hz, ci->ndm_updated/hz); |
| 303 | } |
| 304 | |
net[shemminger]!shemminger | 69410a4 | 2005-03-10 19:01:07 +0000 | [diff] [blame] | 305 | if (tb[NDA_PROBES] && show_stats) { |
Stephen Hemminger | ff24746 | 2012-04-10 08:47:55 -0700 | [diff] [blame] | 306 | __u32 p = rta_getattr_u32(tb[NDA_PROBES]); |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 307 | |
net[shemminger]!shemminger | 69410a4 | 2005-03-10 19:01:07 +0000 | [diff] [blame] | 308 | fprintf(fp, " probes %u", p); |
| 309 | } |
| 310 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 311 | if (r->ndm_state) { |
ch[shemminger]!tgraf | 435ac6b | 2004-12-07 23:55:01 +0000 | [diff] [blame] | 312 | int nud = r->ndm_state; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 313 | |
ch[shemminger]!tgraf | 435ac6b | 2004-12-07 23:55:01 +0000 | [diff] [blame] | 314 | fprintf(fp, " "); |
| 315 | |
| 316 | #define PRINT_FLAG(f) if (nud & NUD_##f) { \ |
| 317 | nud &= ~NUD_##f; fprintf(fp, #f "%s", nud ? "," : ""); } |
| 318 | PRINT_FLAG(INCOMPLETE); |
| 319 | PRINT_FLAG(REACHABLE); |
| 320 | PRINT_FLAG(STALE); |
| 321 | PRINT_FLAG(DELAY); |
| 322 | PRINT_FLAG(PROBE); |
| 323 | PRINT_FLAG(FAILED); |
| 324 | PRINT_FLAG(NOARP); |
| 325 | PRINT_FLAG(PERMANENT); |
| 326 | #undef PRINT_FLAG |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 327 | } |
| 328 | fprintf(fp, "\n"); |
| 329 | |
| 330 | fflush(fp); |
| 331 | return 0; |
| 332 | } |
| 333 | |
vadimk | 093b764 | 2014-10-20 12:25:17 +0300 | [diff] [blame] | 334 | void ipneigh_reset_filter(int ifindex) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 335 | { |
| 336 | memset(&filter, 0, sizeof(filter)); |
| 337 | filter.state = ~0; |
vadimk | 093b764 | 2014-10-20 12:25:17 +0300 | [diff] [blame] | 338 | filter.index = ifindex; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 339 | } |
| 340 | |
Stephen Hemminger | d1f28cf | 2013-02-12 11:09:03 -0800 | [diff] [blame] | 341 | static int do_show_or_flush(int argc, char **argv, int flush) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 342 | { |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 343 | struct { |
| 344 | struct nlmsghdr n; |
| 345 | struct ndmsg ndm; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 346 | char buf[256]; |
Phil Sutter | d17b136 | 2016-07-18 16:48:42 +0200 | [diff] [blame] | 347 | } req = { |
| 348 | .n.nlmsg_type = RTM_GETNEIGH, |
| 349 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)), |
| 350 | }; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 351 | char *filter_dev = NULL; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 352 | int state_given = 0; |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 353 | |
vadimk | 093b764 | 2014-10-20 12:25:17 +0300 | [diff] [blame] | 354 | ipneigh_reset_filter(0); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 355 | |
| 356 | if (!filter.family) |
| 357 | filter.family = preferred_family; |
| 358 | |
| 359 | if (flush) { |
| 360 | if (argc <= 0) { |
| 361 | fprintf(stderr, "Flush requires arguments.\n"); |
| 362 | return -1; |
| 363 | } |
| 364 | filter.state = ~(NUD_PERMANENT|NUD_NOARP); |
| 365 | } else |
| 366 | filter.state = 0xFF & ~NUD_NOARP; |
| 367 | |
| 368 | while (argc > 0) { |
| 369 | if (strcmp(*argv, "dev") == 0) { |
| 370 | NEXT_ARG(); |
| 371 | if (filter_dev) |
| 372 | duparg("dev", *argv); |
| 373 | filter_dev = *argv; |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 374 | } else if (strcmp(*argv, "master") == 0) { |
| 375 | int ifindex; |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 376 | |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 377 | NEXT_ARG(); |
| 378 | ifindex = ll_name_to_index(*argv); |
| 379 | if (!ifindex) |
| 380 | invarg("Device does not exist\n", *argv); |
| 381 | addattr32(&req.n, sizeof(req), NDA_MASTER, ifindex); |
| 382 | filter.master = ifindex; |
David Ahern | 5db1ada | 2016-06-29 11:26:59 -0700 | [diff] [blame] | 383 | } else if (strcmp(*argv, "vrf") == 0) { |
| 384 | int ifindex; |
| 385 | |
| 386 | NEXT_ARG(); |
| 387 | ifindex = ll_name_to_index(*argv); |
| 388 | if (!ifindex) |
| 389 | invarg("Not a valid VRF name\n", *argv); |
| 390 | if (!name_is_vrf(*argv)) |
| 391 | invarg("Not a valid VRF name\n", *argv); |
| 392 | addattr32(&req.n, sizeof(req), NDA_MASTER, ifindex); |
| 393 | filter.master = ifindex; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 394 | } else if (strcmp(*argv, "unused") == 0) { |
| 395 | filter.unused_only = 1; |
| 396 | } else if (strcmp(*argv, "nud") == 0) { |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 397 | unsigned int state; |
| 398 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 399 | NEXT_ARG(); |
| 400 | if (!state_given) { |
| 401 | state_given = 1; |
| 402 | filter.state = 0; |
| 403 | } |
| 404 | if (nud_state_a2n(&state, *argv)) { |
| 405 | if (strcmp(*argv, "all") != 0) |
| 406 | invarg("nud state is bad", *argv); |
| 407 | state = ~0; |
| 408 | if (flush) |
| 409 | state &= ~NUD_NOARP; |
| 410 | } |
| 411 | if (state == 0) |
| 412 | state = 0x100; |
| 413 | filter.state |= state; |
Tony Zelenoff | 1dac781 | 2012-01-26 04:50:04 +0000 | [diff] [blame] | 414 | } else if (strcmp(*argv, "proxy") == 0) |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 415 | req.ndm.ndm_flags = NTF_PROXY; |
Tony Zelenoff | 1dac781 | 2012-01-26 04:50:04 +0000 | [diff] [blame] | 416 | else { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 417 | if (strcmp(*argv, "to") == 0) { |
| 418 | NEXT_ARG(); |
| 419 | } |
| 420 | if (matches(*argv, "help") == 0) |
| 421 | usage(); |
| 422 | get_prefix(&filter.pfx, *argv, filter.family); |
| 423 | if (filter.family == AF_UNSPEC) |
| 424 | filter.family = filter.pfx.family; |
| 425 | } |
| 426 | argc--; argv++; |
| 427 | } |
| 428 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 429 | ll_init_map(&rth); |
| 430 | |
| 431 | if (filter_dev) { |
| 432 | if ((filter.index = ll_name_to_index(filter_dev)) == 0) { |
| 433 | fprintf(stderr, "Cannot find device \"%s\"\n", filter_dev); |
| 434 | return -1; |
| 435 | } |
David Ahern | b8c7532 | 2015-10-07 10:23:24 -0700 | [diff] [blame] | 436 | addattr32(&req.n, sizeof(req), NDA_IFINDEX, filter.index); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 437 | } |
| 438 | |
Jeff Harris | 1c346dc | 2016-04-14 14:15:03 -0400 | [diff] [blame] | 439 | req.ndm.ndm_family = filter.family; |
| 440 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 441 | if (flush) { |
| 442 | int round = 0; |
| 443 | char flushb[4096-512]; |
| 444 | |
| 445 | filter.flushb = flushb; |
| 446 | filter.flushp = 0; |
| 447 | filter.flushe = sizeof(flushb); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 448 | filter.state &= ~NUD_FAILED; |
| 449 | |
shemminger | 6608184 | 2005-08-16 21:10:51 +0000 | [diff] [blame] | 450 | while (round < MAX_ROUNDS) { |
Jeff Harris | 1c346dc | 2016-04-14 14:15:03 -0400 | [diff] [blame] | 451 | if (rtnl_dump_request_n(&rth, &req.n) < 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 452 | perror("Cannot send dump request"); |
| 453 | exit(1); |
| 454 | } |
| 455 | filter.flushed = 0; |
Stephen Hemminger | cd70f3f | 2011-12-28 10:37:12 -0800 | [diff] [blame] | 456 | if (rtnl_dump_filter(&rth, print_neigh, stdout) < 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 457 | fprintf(stderr, "Flush terminated\n"); |
| 458 | exit(1); |
| 459 | } |
| 460 | if (filter.flushed == 0) { |
Andreas Henriksson | f0b34d2 | 2008-08-29 19:52:48 +0200 | [diff] [blame] | 461 | if (show_stats) { |
| 462 | if (round == 0) |
| 463 | printf("Nothing to flush.\n"); |
| 464 | else |
Stephen Hemminger | 56f5daa | 2016-03-21 11:52:19 -0700 | [diff] [blame] | 465 | printf("*** Flush is complete after %d round%s ***\n", round, round > 1?"s":""); |
Andreas Henriksson | f0b34d2 | 2008-08-29 19:52:48 +0200 | [diff] [blame] | 466 | } |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 467 | fflush(stdout); |
| 468 | return 0; |
| 469 | } |
| 470 | round++; |
| 471 | if (flush_update() < 0) |
| 472 | exit(1); |
| 473 | if (show_stats) { |
| 474 | printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed); |
| 475 | fflush(stdout); |
| 476 | } |
| 477 | } |
shemminger | 6608184 | 2005-08-16 21:10:51 +0000 | [diff] [blame] | 478 | printf("*** Flush not complete bailing out after %d rounds\n", |
| 479 | MAX_ROUNDS); |
| 480 | return 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 481 | } |
| 482 | |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 483 | if (rtnl_dump_request_n(&rth, &req.n) < 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 484 | perror("Cannot send dump request"); |
| 485 | exit(1); |
| 486 | } |
| 487 | |
Stephen Hemminger | cd70f3f | 2011-12-28 10:37:12 -0800 | [diff] [blame] | 488 | if (rtnl_dump_filter(&rth, print_neigh, stdout) < 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 489 | fprintf(stderr, "Dump terminated\n"); |
| 490 | exit(1); |
| 491 | } |
| 492 | |
| 493 | return 0; |
| 494 | } |
| 495 | |
| 496 | int do_ipneigh(int argc, char **argv) |
| 497 | { |
| 498 | if (argc > 0) { |
| 499 | if (matches(*argv, "add") == 0) |
| 500 | return ipneigh_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1); |
| 501 | if (matches(*argv, "change") == 0 || |
| 502 | strcmp(*argv, "chg") == 0) |
| 503 | return ipneigh_modify(RTM_NEWNEIGH, NLM_F_REPLACE, argc-1, argv+1); |
| 504 | if (matches(*argv, "replace") == 0) |
| 505 | return ipneigh_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1); |
| 506 | if (matches(*argv, "delete") == 0) |
| 507 | return ipneigh_modify(RTM_DELNEIGH, 0, argc-1, argv+1); |
| 508 | if (matches(*argv, "get") == 0) { |
| 509 | fprintf(stderr, "Sorry, \"neigh get\" is not implemented :-(\n"); |
| 510 | return -1; |
| 511 | } |
| 512 | if (matches(*argv, "show") == 0 || |
| 513 | matches(*argv, "lst") == 0 || |
| 514 | matches(*argv, "list") == 0) |
| 515 | return do_show_or_flush(argc-1, argv+1, 0); |
| 516 | if (matches(*argv, "flush") == 0) |
| 517 | return do_show_or_flush(argc-1, argv+1, 1); |
| 518 | if (matches(*argv, "help") == 0) |
| 519 | usage(); |
| 520 | } else |
| 521 | return do_show_or_flush(0, NULL, 0); |
| 522 | |
| 523 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip neigh help\".\n", *argv); |
| 524 | exit(-1); |
| 525 | } |