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aba5acdf SH |
1 | /* |
2 | * iproute.c "ip route". | |
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> | |
33551240 | 19 | #include <time.h> |
aba5acdf SH |
20 | #include <sys/time.h> |
21 | #include <sys/socket.h> | |
22 | #include <netinet/in.h> | |
23 | #include <netinet/ip.h> | |
24 | #include <arpa/inet.h> | |
25 | #include <linux/in_route.h> | |
f4ff11e3 | 26 | #include <errno.h> |
aba5acdf SH |
27 | |
28 | #include "rt_names.h" | |
29 | #include "utils.h" | |
30 | #include "ip_common.h" | |
31 | ||
32 | #ifndef RTAX_RTTVAR | |
33 | #define RTAX_RTTVAR RTAX_HOPS | |
34 | #endif | |
35 | ||
f4ff11e3 DS |
36 | enum list_action { |
37 | IPROUTE_LIST, | |
38 | IPROUTE_FLUSH, | |
39 | IPROUTE_SAVE, | |
40 | }; | |
f38c7334 SH |
41 | static const char *mx_names[RTAX_MAX+1] = { |
42 | [RTAX_MTU] = "mtu", | |
43 | [RTAX_WINDOW] = "window", | |
44 | [RTAX_RTT] = "rtt", | |
45 | [RTAX_RTTVAR] = "rttvar", | |
46 | [RTAX_SSTHRESH] = "ssthresh", | |
47 | [RTAX_CWND] = "cwnd", | |
48 | [RTAX_ADVMSS] = "advmss", | |
49 | [RTAX_REORDERING]="reordering", | |
50 | [RTAX_HOPLIMIT] = "hoplimit", | |
51 | [RTAX_INITCWND] = "initcwnd", | |
52 | [RTAX_FEATURES] = "features", | |
54e0b2e7 | 53 | [RTAX_RTO_MIN] = "rto_min", |
f5fd8003 | 54 | [RTAX_INITRWND] = "initrwnd", |
b37f2c89 | 55 | [RTAX_QUICKACK] = "quickack", |
6ef87f9c | 56 | [RTAX_CC_ALGO] = "congctl", |
f38c7334 | 57 | }; |
aba5acdf SH |
58 | static void usage(void) __attribute__((noreturn)); |
59 | ||
60 | static void usage(void) | |
61 | { | |
62 | fprintf(stderr, "Usage: ip route { list | flush } SELECTOR\n"); | |
f4ff11e3 DS |
63 | fprintf(stderr, " ip route save SELECTOR\n"); |
64 | fprintf(stderr, " ip route restore\n"); | |
93b79863 | 65 | fprintf(stderr, " ip route showdump\n"); |
aba5acdf | 66 | fprintf(stderr, " ip route get ADDRESS [ from ADDRESS iif STRING ]\n"); |
8f480637 | 67 | fprintf(stderr, " [ oif STRING ] [ tos TOS ]\n"); |
b0373bfb | 68 | fprintf(stderr, " [ mark NUMBER ]\n"); |
c0c44bfe | 69 | fprintf(stderr, " ip route { add | del | change | append | replace } ROUTE\n"); |
aba5acdf SH |
70 | fprintf(stderr, "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n"); |
71 | fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n"); | |
72 | fprintf(stderr, " [ type TYPE ] [ scope SCOPE ]\n"); | |
73 | fprintf(stderr, "ROUTE := NODE_SPEC [ INFO_SPEC ]\n"); | |
74 | fprintf(stderr, "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n"); | |
75 | fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n"); | |
76 | fprintf(stderr, " [ scope SCOPE ] [ metric METRIC ]\n"); | |
77 | fprintf(stderr, "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n"); | |
93ae2835 EB |
78 | fprintf(stderr, "NH := [ via [ FAMILY ] ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS\n"); |
79 | fprintf(stderr, "FAMILY := [ inet | inet6 | ipx | dnet | bridge | link ]"); | |
6f7a9f4d | 80 | fprintf(stderr, "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]\n"); |
8f480637 | 81 | fprintf(stderr, " [ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]\n"); |
a1f1143e | 82 | fprintf(stderr, " [ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]\n"); |
576c63ee | 83 | fprintf(stderr, " [ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]\n"); |
f5fd8003 | 84 | fprintf(stderr, " [ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]\n"); |
6ef87f9c | 85 | fprintf(stderr, " [ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]\n"); |
aba5acdf SH |
86 | fprintf(stderr, "TYPE := [ unicast | local | broadcast | multicast | throw |\n"); |
87 | fprintf(stderr, " unreachable | prohibit | blackhole | nat ]\n"); | |
88 | fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n"); | |
89 | fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n"); | |
aba5acdf SH |
90 | fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n"); |
91 | fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n"); | |
9b2cdc00 | 92 | fprintf(stderr, "TIME := NUMBER[s|ms]\n"); |
b37f2c89 | 93 | fprintf(stderr, "BOOL := [1|0]\n"); |
29d1f730 | 94 | fprintf(stderr, "FEATURES := ecn\n"); |
aba5acdf SH |
95 | exit(-1); |
96 | } | |
97 | ||
98 | ||
99 | static struct | |
100 | { | |
caae16b3 | 101 | unsigned int tb; |
bd4bcdad | 102 | int cloned; |
aba5acdf SH |
103 | int flushed; |
104 | char *flushb; | |
105 | int flushp; | |
106 | int flushe; | |
aba5acdf SH |
107 | int protocol, protocolmask; |
108 | int scope, scopemask; | |
109 | int type, typemask; | |
110 | int tos, tosmask; | |
111 | int iif, iifmask; | |
112 | int oif, oifmask; | |
b0373bfb | 113 | int mark, markmask; |
aba5acdf SH |
114 | int realm, realmmask; |
115 | inet_prefix rprefsrc; | |
116 | inet_prefix rvia; | |
117 | inet_prefix rdst; | |
118 | inet_prefix mdst; | |
119 | inet_prefix rsrc; | |
120 | inet_prefix msrc; | |
121 | } filter; | |
122 | ||
123 | static int flush_update(void) | |
124 | { | |
f31a37f7 | 125 | if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) { |
1fb0a998 | 126 | perror("Failed to send flush request"); |
aba5acdf SH |
127 | return -1; |
128 | } | |
129 | filter.flushp = 0; | |
130 | return 0; | |
131 | } | |
132 | ||
d1f28cf1 | 133 | static int filter_nlmsg(struct nlmsghdr *n, struct rtattr **tb, int host_len) |
aba5acdf | 134 | { |
aba5acdf | 135 | struct rtmsg *r = NLMSG_DATA(n); |
aba5acdf SH |
136 | inet_prefix dst; |
137 | inet_prefix src; | |
aba5acdf | 138 | inet_prefix via; |
f4ff11e3 | 139 | inet_prefix prefsrc; |
34e95647 | 140 | __u32 table; |
f4ff11e3 | 141 | static int ip6_multiple_tables; |
aba5acdf | 142 | |
34e95647 PM |
143 | table = rtm_get_table(r, tb); |
144 | ||
145 | if (r->rtm_family == AF_INET6 && table != RT_TABLE_MAIN) | |
e0b29fe7 PM |
146 | ip6_multiple_tables = 1; |
147 | ||
44792827 UW |
148 | if (filter.cloned == !(r->rtm_flags&RTM_F_CLONED)) |
149 | return 0; | |
150 | ||
e0b29fe7 | 151 | if (r->rtm_family == AF_INET6 && !ip6_multiple_tables) { |
aba5acdf | 152 | if (filter.tb) { |
bd4bcdad PM |
153 | if (filter.tb == RT_TABLE_LOCAL) { |
154 | if (r->rtm_type != RTN_LOCAL) | |
aba5acdf | 155 | return 0; |
bd4bcdad PM |
156 | } else if (filter.tb == RT_TABLE_MAIN) { |
157 | if (r->rtm_type == RTN_LOCAL) | |
aba5acdf | 158 | return 0; |
bd4bcdad PM |
159 | } else { |
160 | return 0; | |
aba5acdf SH |
161 | } |
162 | } | |
163 | } else { | |
34e95647 | 164 | if (filter.tb > 0 && filter.tb != table) |
aba5acdf SH |
165 | return 0; |
166 | } | |
167 | if ((filter.protocol^r->rtm_protocol)&filter.protocolmask) | |
168 | return 0; | |
169 | if ((filter.scope^r->rtm_scope)&filter.scopemask) | |
170 | return 0; | |
171 | if ((filter.type^r->rtm_type)&filter.typemask) | |
172 | return 0; | |
173 | if ((filter.tos^r->rtm_tos)&filter.tosmask) | |
174 | return 0; | |
175 | if (filter.rdst.family && | |
176 | (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len)) | |
177 | return 0; | |
178 | if (filter.mdst.family && | |
179 | (r->rtm_family != filter.mdst.family || | |
180 | (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len))) | |
181 | return 0; | |
182 | if (filter.rsrc.family && | |
183 | (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len)) | |
184 | return 0; | |
185 | if (filter.msrc.family && | |
186 | (r->rtm_family != filter.msrc.family || | |
187 | (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len))) | |
188 | return 0; | |
93ae2835 EB |
189 | if (filter.rvia.family) { |
190 | int family = r->rtm_family; | |
191 | if (tb[RTA_VIA]) { | |
192 | struct rtvia *via = RTA_DATA(tb[RTA_VIA]); | |
193 | family = via->rtvia_family; | |
194 | } | |
195 | if (family != filter.rvia.family) | |
196 | return 0; | |
197 | } | |
aba5acdf SH |
198 | if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family) |
199 | return 0; | |
200 | ||
aba5acdf SH |
201 | memset(&dst, 0, sizeof(dst)); |
202 | dst.family = r->rtm_family; | |
203 | if (tb[RTA_DST]) | |
204 | memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8); | |
205 | if (filter.rsrc.family || filter.msrc.family) { | |
206 | memset(&src, 0, sizeof(src)); | |
207 | src.family = r->rtm_family; | |
208 | if (tb[RTA_SRC]) | |
209 | memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8); | |
210 | } | |
211 | if (filter.rvia.bitlen>0) { | |
212 | memset(&via, 0, sizeof(via)); | |
213 | via.family = r->rtm_family; | |
214 | if (tb[RTA_GATEWAY]) | |
7849fb55 | 215 | memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len/8); |
93ae2835 EB |
216 | if (tb[RTA_VIA]) { |
217 | size_t len = RTA_PAYLOAD(tb[RTA_VIA]) - 2; | |
218 | struct rtvia *rtvia = RTA_DATA(tb[RTA_VIA]); | |
219 | via.family = rtvia->rtvia_family; | |
220 | memcpy(&via.data, rtvia->rtvia_addr, len); | |
221 | } | |
aba5acdf SH |
222 | } |
223 | if (filter.rprefsrc.bitlen>0) { | |
224 | memset(&prefsrc, 0, sizeof(prefsrc)); | |
225 | prefsrc.family = r->rtm_family; | |
226 | if (tb[RTA_PREFSRC]) | |
7849fb55 | 227 | memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len/8); |
aba5acdf SH |
228 | } |
229 | ||
230 | if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen)) | |
231 | return 0; | |
232 | if (filter.mdst.family && filter.mdst.bitlen >= 0 && | |
233 | inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len)) | |
234 | return 0; | |
235 | ||
236 | if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen)) | |
237 | return 0; | |
238 | if (filter.msrc.family && filter.msrc.bitlen >= 0 && | |
239 | inet_addr_match(&src, &filter.msrc, r->rtm_src_len)) | |
240 | return 0; | |
241 | ||
242 | if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen)) | |
243 | return 0; | |
244 | if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen)) | |
245 | return 0; | |
246 | if (filter.realmmask) { | |
247 | __u32 realms = 0; | |
248 | if (tb[RTA_FLOW]) | |
ff24746c | 249 | realms = rta_getattr_u32(tb[RTA_FLOW]); |
aba5acdf SH |
250 | if ((realms^filter.realm)&filter.realmmask) |
251 | return 0; | |
252 | } | |
253 | if (filter.iifmask) { | |
254 | int iif = 0; | |
255 | if (tb[RTA_IIF]) | |
256 | iif = *(int*)RTA_DATA(tb[RTA_IIF]); | |
257 | if ((iif^filter.iif)&filter.iifmask) | |
258 | return 0; | |
259 | } | |
260 | if (filter.oifmask) { | |
261 | int oif = 0; | |
262 | if (tb[RTA_OIF]) | |
263 | oif = *(int*)RTA_DATA(tb[RTA_OIF]); | |
264 | if ((oif^filter.oif)&filter.oifmask) | |
265 | return 0; | |
266 | } | |
b0373bfb ED |
267 | if (filter.markmask) { |
268 | int mark = 0; | |
269 | if (tb[RTA_MARK]) | |
270 | mark = *(int *)RTA_DATA(tb[RTA_MARK]); | |
271 | if ((mark ^ filter.mark) & filter.markmask) | |
272 | return 0; | |
273 | } | |
ae665a52 | 274 | if (filter.flushb && |
aba5acdf SH |
275 | r->rtm_family == AF_INET6 && |
276 | r->rtm_dst_len == 0 && | |
277 | r->rtm_type == RTN_UNREACHABLE && | |
278 | tb[RTA_PRIORITY] && | |
279 | *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1) | |
280 | return 0; | |
281 | ||
f4ff11e3 DS |
282 | return 1; |
283 | } | |
284 | ||
29d1f730 FW |
285 | static void print_rtax_features(FILE *fp, unsigned int features) |
286 | { | |
287 | unsigned int of = features; | |
288 | ||
289 | if (features & RTAX_FEATURE_ECN) { | |
290 | fprintf(fp, " ecn"); | |
291 | features &= ~RTAX_FEATURE_ECN; | |
292 | } | |
293 | ||
294 | if (features) | |
295 | fprintf(fp, " 0x%x", of); | |
296 | } | |
297 | ||
f4ff11e3 DS |
298 | int print_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) |
299 | { | |
300 | FILE *fp = (FILE*)arg; | |
301 | struct rtmsg *r = NLMSG_DATA(n); | |
302 | int len = n->nlmsg_len; | |
303 | struct rtattr * tb[RTA_MAX+1]; | |
304 | char abuf[256]; | |
f3a2ddc1 | 305 | int host_len; |
f4ff11e3 DS |
306 | __u32 table; |
307 | SPRINT_BUF(b1); | |
308 | static int hz; | |
309 | ||
310 | if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) { | |
311 | fprintf(stderr, "Not a route: %08x %08x %08x\n", | |
312 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); | |
313 | return 0; | |
314 | } | |
315 | if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE) | |
316 | return 0; | |
317 | len -= NLMSG_LENGTH(sizeof(*r)); | |
318 | if (len < 0) { | |
319 | fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); | |
320 | return -1; | |
321 | } | |
322 | ||
f3a2ddc1 | 323 | host_len = af_bit_len(r->rtm_family); |
f4ff11e3 DS |
324 | |
325 | parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len); | |
326 | table = rtm_get_table(r, tb); | |
327 | ||
328 | if (!filter_nlmsg(n, tb, host_len)) | |
329 | return 0; | |
330 | ||
aba5acdf SH |
331 | if (filter.flushb) { |
332 | struct nlmsghdr *fn; | |
333 | if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) { | |
334 | if (flush_update()) | |
335 | return -1; | |
336 | } | |
337 | fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp)); | |
338 | memcpy(fn, n, n->nlmsg_len); | |
339 | fn->nlmsg_type = RTM_DELROUTE; | |
340 | fn->nlmsg_flags = NLM_F_REQUEST; | |
351efcde | 341 | fn->nlmsg_seq = ++rth.seq; |
aba5acdf SH |
342 | filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb; |
343 | filter.flushed++; | |
344 | if (show_stats < 2) | |
345 | return 0; | |
346 | } | |
347 | ||
348 | if (n->nlmsg_type == RTM_DELROUTE) | |
349 | fprintf(fp, "Deleted "); | |
577e5a53 | 350 | if ((r->rtm_type != RTN_UNICAST || show_details > 0) && !filter.type) |
aba5acdf SH |
351 | fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1))); |
352 | ||
353 | if (tb[RTA_DST]) { | |
354 | if (r->rtm_dst_len != host_len) { | |
355 | fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family, | |
26dcdf3a EB |
356 | RTA_PAYLOAD(tb[RTA_DST]), |
357 | RTA_DATA(tb[RTA_DST]), | |
358 | abuf, sizeof(abuf)), | |
aba5acdf SH |
359 | r->rtm_dst_len |
360 | ); | |
361 | } else { | |
362 | fprintf(fp, "%s ", format_host(r->rtm_family, | |
363 | RTA_PAYLOAD(tb[RTA_DST]), | |
364 | RTA_DATA(tb[RTA_DST]), | |
365 | abuf, sizeof(abuf)) | |
366 | ); | |
367 | } | |
368 | } else if (r->rtm_dst_len) { | |
369 | fprintf(fp, "0/%d ", r->rtm_dst_len); | |
370 | } else { | |
371 | fprintf(fp, "default "); | |
372 | } | |
373 | if (tb[RTA_SRC]) { | |
374 | if (r->rtm_src_len != host_len) { | |
375 | fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family, | |
26dcdf3a EB |
376 | RTA_PAYLOAD(tb[RTA_SRC]), |
377 | RTA_DATA(tb[RTA_SRC]), | |
378 | abuf, sizeof(abuf)), | |
aba5acdf SH |
379 | r->rtm_src_len |
380 | ); | |
381 | } else { | |
382 | fprintf(fp, "from %s ", format_host(r->rtm_family, | |
383 | RTA_PAYLOAD(tb[RTA_SRC]), | |
384 | RTA_DATA(tb[RTA_SRC]), | |
385 | abuf, sizeof(abuf)) | |
386 | ); | |
387 | } | |
388 | } else if (r->rtm_src_len) { | |
389 | fprintf(fp, "from 0/%u ", r->rtm_src_len); | |
390 | } | |
6f7a9f4d EB |
391 | if (tb[RTA_NEWDST]) { |
392 | fprintf(fp, "as to %s ", format_host(r->rtm_family, | |
393 | RTA_PAYLOAD(tb[RTA_NEWDST]), | |
394 | RTA_DATA(tb[RTA_NEWDST]), | |
395 | abuf, sizeof(abuf)) | |
396 | ); | |
397 | } | |
aba5acdf SH |
398 | if (r->rtm_tos && filter.tosmask != -1) { |
399 | SPRINT_BUF(b1); | |
400 | fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1))); | |
401 | } | |
02d2ae55 | 402 | |
aba5acdf | 403 | if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) { |
ae665a52 | 404 | fprintf(fp, "via %s ", |
aba5acdf SH |
405 | format_host(r->rtm_family, |
406 | RTA_PAYLOAD(tb[RTA_GATEWAY]), | |
407 | RTA_DATA(tb[RTA_GATEWAY]), | |
408 | abuf, sizeof(abuf))); | |
409 | } | |
93ae2835 EB |
410 | if (tb[RTA_VIA]) { |
411 | size_t len = RTA_PAYLOAD(tb[RTA_VIA]) - 2; | |
412 | struct rtvia *via = RTA_DATA(tb[RTA_VIA]); | |
413 | fprintf(fp, "via %s %s ", | |
414 | family_name(via->rtvia_family), | |
415 | format_host(via->rtvia_family, len, via->rtvia_addr, | |
416 | abuf, sizeof(abuf))); | |
417 | } | |
aba5acdf SH |
418 | if (tb[RTA_OIF] && filter.oifmask != -1) |
419 | fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF]))); | |
420 | ||
421 | if (!(r->rtm_flags&RTM_F_CLONED)) { | |
577e5a53 | 422 | if ((table != RT_TABLE_MAIN || show_details > 0) && !filter.tb) |
34e95647 | 423 | fprintf(fp, " table %s ", rtnl_rttable_n2a(table, b1, sizeof(b1))); |
577e5a53 | 424 | if ((r->rtm_protocol != RTPROT_BOOT || show_details > 0) && filter.protocolmask != -1) |
aba5acdf | 425 | fprintf(fp, " proto %s ", rtnl_rtprot_n2a(r->rtm_protocol, b1, sizeof(b1))); |
577e5a53 | 426 | if ((r->rtm_scope != RT_SCOPE_UNIVERSE || show_details > 0) && filter.scopemask != -1) |
aba5acdf SH |
427 | fprintf(fp, " scope %s ", rtnl_rtscope_n2a(r->rtm_scope, b1, sizeof(b1))); |
428 | } | |
429 | if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) { | |
430 | /* Do not use format_host(). It is our local addr | |
431 | and symbolic name will not be useful. | |
432 | */ | |
ae665a52 | 433 | fprintf(fp, " src %s ", |
aba5acdf | 434 | rt_addr_n2a(r->rtm_family, |
26dcdf3a | 435 | RTA_PAYLOAD(tb[RTA_PREFSRC]), |
aba5acdf SH |
436 | RTA_DATA(tb[RTA_PREFSRC]), |
437 | abuf, sizeof(abuf))); | |
438 | } | |
439 | if (tb[RTA_PRIORITY]) | |
ff24746c | 440 | fprintf(fp, " metric %u ", rta_getattr_u32(tb[RTA_PRIORITY])); |
aba5acdf SH |
441 | if (r->rtm_flags & RTNH_F_DEAD) |
442 | fprintf(fp, "dead "); | |
443 | if (r->rtm_flags & RTNH_F_ONLINK) | |
444 | fprintf(fp, "onlink "); | |
445 | if (r->rtm_flags & RTNH_F_PERVASIVE) | |
446 | fprintf(fp, "pervasive "); | |
655444bd SF |
447 | if (r->rtm_flags & RTNH_F_EXTERNAL) |
448 | fprintf(fp, "external "); | |
aba5acdf SH |
449 | if (r->rtm_flags & RTM_F_NOTIFY) |
450 | fprintf(fp, "notify "); | |
b0373bfb ED |
451 | if (tb[RTA_MARK]) { |
452 | unsigned int mark = *(unsigned int*)RTA_DATA(tb[RTA_MARK]); | |
453 | if (mark) { | |
454 | if (mark >= 16) | |
455 | fprintf(fp, " mark 0x%x", mark); | |
456 | else | |
457 | fprintf(fp, " mark %u", mark); | |
458 | } | |
459 | } | |
aba5acdf SH |
460 | |
461 | if (tb[RTA_FLOW] && filter.realmmask != ~0U) { | |
ff24746c | 462 | __u32 to = rta_getattr_u32(tb[RTA_FLOW]); |
aba5acdf SH |
463 | __u32 from = to>>16; |
464 | to &= 0xFFFF; | |
465 | fprintf(fp, "realm%s ", from ? "s" : ""); | |
466 | if (from) { | |
467 | fprintf(fp, "%s/", | |
468 | rtnl_rtrealm_n2a(from, b1, sizeof(b1))); | |
469 | } | |
470 | fprintf(fp, "%s ", | |
471 | rtnl_rtrealm_n2a(to, b1, sizeof(b1))); | |
472 | } | |
473 | if ((r->rtm_flags&RTM_F_CLONED) && r->rtm_family == AF_INET) { | |
474 | __u32 flags = r->rtm_flags&~0xFFFF; | |
475 | int first = 1; | |
476 | ||
477 | fprintf(fp, "%s cache ", _SL_); | |
478 | ||
479 | #define PRTFL(fl,flname) if (flags&RTCF_##fl) { \ | |
480 | flags &= ~RTCF_##fl; \ | |
481 | fprintf(fp, "%s" flname "%s", first ? "<" : "", flags ? "," : "> "); \ | |
482 | first = 0; } | |
483 | PRTFL(LOCAL, "local"); | |
484 | PRTFL(REJECT, "reject"); | |
485 | PRTFL(MULTICAST, "mc"); | |
486 | PRTFL(BROADCAST, "brd"); | |
487 | PRTFL(DNAT, "dst-nat"); | |
488 | PRTFL(SNAT, "src-nat"); | |
489 | PRTFL(MASQ, "masq"); | |
490 | PRTFL(DIRECTDST, "dst-direct"); | |
491 | PRTFL(DIRECTSRC, "src-direct"); | |
492 | PRTFL(REDIRECTED, "redirected"); | |
493 | PRTFL(DOREDIRECT, "redirect"); | |
494 | PRTFL(FAST, "fastroute"); | |
495 | PRTFL(NOTIFY, "notify"); | |
496 | PRTFL(TPROXY, "proxy"); | |
63a0f20a | 497 | |
aba5acdf SH |
498 | if (flags) |
499 | fprintf(fp, "%s%x> ", first ? "<" : "", flags); | |
500 | if (tb[RTA_CACHEINFO]) { | |
501 | struct rta_cacheinfo *ci = RTA_DATA(tb[RTA_CACHEINFO]); | |
aba5acdf | 502 | if (!hz) |
5e8bc631 | 503 | hz = get_user_hz(); |
aba5acdf SH |
504 | if (ci->rta_expires != 0) |
505 | fprintf(fp, " expires %dsec", ci->rta_expires/hz); | |
506 | if (ci->rta_error != 0) | |
507 | fprintf(fp, " error %d", ci->rta_error); | |
508 | if (show_stats) { | |
509 | if (ci->rta_clntref) | |
510 | fprintf(fp, " users %d", ci->rta_clntref); | |
511 | if (ci->rta_used != 0) | |
512 | fprintf(fp, " used %d", ci->rta_used); | |
513 | if (ci->rta_lastuse != 0) | |
514 | fprintf(fp, " age %dsec", ci->rta_lastuse/hz); | |
515 | } | |
aba5acdf SH |
516 | if (ci->rta_id) |
517 | fprintf(fp, " ipid 0x%04x", ci->rta_id); | |
518 | if (ci->rta_ts || ci->rta_tsage) | |
d5b7420a SH |
519 | fprintf(fp, " ts 0x%x tsage %dsec", |
520 | ci->rta_ts, ci->rta_tsage); | |
aba5acdf SH |
521 | } |
522 | } else if (r->rtm_family == AF_INET6) { | |
523 | struct rta_cacheinfo *ci = NULL; | |
524 | if (tb[RTA_CACHEINFO]) | |
525 | ci = RTA_DATA(tb[RTA_CACHEINFO]); | |
526 | if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) { | |
aba5acdf | 527 | if (!hz) |
5e8bc631 | 528 | hz = get_user_hz(); |
aba5acdf SH |
529 | if (r->rtm_flags & RTM_F_CLONED) |
530 | fprintf(fp, "%s cache ", _SL_); | |
531 | if (ci->rta_expires) | |
532 | fprintf(fp, " expires %dsec", ci->rta_expires/hz); | |
533 | if (ci->rta_error != 0) | |
534 | fprintf(fp, " error %d", ci->rta_error); | |
535 | if (show_stats) { | |
536 | if (ci->rta_clntref) | |
537 | fprintf(fp, " users %d", ci->rta_clntref); | |
538 | if (ci->rta_used != 0) | |
539 | fprintf(fp, " used %d", ci->rta_used); | |
540 | if (ci->rta_lastuse != 0) | |
541 | fprintf(fp, " age %dsec", ci->rta_lastuse/hz); | |
542 | } | |
543 | } else if (ci) { | |
544 | if (ci->rta_error != 0) | |
545 | fprintf(fp, " error %d", ci->rta_error); | |
546 | } | |
547 | } | |
548 | if (tb[RTA_METRICS]) { | |
549 | int i; | |
550 | unsigned mxlock = 0; | |
551 | struct rtattr *mxrta[RTAX_MAX+1]; | |
552 | ||
aba5acdf SH |
553 | parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(tb[RTA_METRICS]), |
554 | RTA_PAYLOAD(tb[RTA_METRICS])); | |
555 | if (mxrta[RTAX_LOCK]) | |
556 | mxlock = *(unsigned*)RTA_DATA(mxrta[RTAX_LOCK]); | |
557 | ||
f38c7334 | 558 | for (i=2; i<= RTAX_MAX; i++) { |
6ef87f9c | 559 | __u32 val; |
ced61d7d | 560 | |
aba5acdf SH |
561 | if (mxrta[i] == NULL) |
562 | continue; | |
6a79240b SH |
563 | |
564 | if (i < sizeof(mx_names)/sizeof(char*) && mx_names[i]) | |
565 | fprintf(fp, " %s", mx_names[i]); | |
aba5acdf | 566 | else |
5e8bc631 | 567 | fprintf(fp, " metric %d", i); |
6ef87f9c | 568 | |
aba5acdf SH |
569 | if (mxlock & (1<<i)) |
570 | fprintf(fp, " lock"); | |
6ef87f9c DB |
571 | if (i != RTAX_CC_ALGO) |
572 | val = rta_getattr_u32(mxrta[i]); | |
aba5acdf | 573 | |
ced61d7d | 574 | switch (i) { |
29d1f730 FW |
575 | case RTAX_FEATURES: |
576 | print_rtax_features(fp, val); | |
577 | break; | |
ced61d7d | 578 | case RTAX_HOPLIMIT: |
62011a0b | 579 | if ((int)val == -1) |
ced61d7d SH |
580 | val = 0; |
581 | /* fall through */ | |
582 | default: | |
583 | fprintf(fp, " %u", val); | |
584 | break; | |
aba5acdf | 585 | |
ced61d7d SH |
586 | case RTAX_RTT: |
587 | case RTAX_RTTVAR: | |
588 | case RTAX_RTO_MIN: | |
aba5acdf SH |
589 | if (i == RTAX_RTT) |
590 | val /= 8; | |
54e0b2e7 | 591 | else if (i == RTAX_RTTVAR) |
aba5acdf | 592 | val /= 4; |
ced61d7d | 593 | |
9b2cdc00 GR |
594 | if (val >= 1000) |
595 | fprintf(fp, " %gs", val/1e3); | |
aba5acdf | 596 | else |
9b2cdc00 | 597 | fprintf(fp, " %ums", val); |
6ef87f9c DB |
598 | break; |
599 | case RTAX_CC_ALGO: | |
600 | fprintf(fp, " %s", rta_getattr_str(mxrta[i])); | |
601 | break; | |
aba5acdf SH |
602 | } |
603 | } | |
604 | } | |
605 | if (tb[RTA_IIF] && filter.iifmask != -1) { | |
606 | fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF]))); | |
607 | } | |
608 | if (tb[RTA_MULTIPATH]) { | |
609 | struct rtnexthop *nh = RTA_DATA(tb[RTA_MULTIPATH]); | |
610 | int first = 0; | |
611 | ||
612 | len = RTA_PAYLOAD(tb[RTA_MULTIPATH]); | |
613 | ||
614 | for (;;) { | |
615 | if (len < sizeof(*nh)) | |
616 | break; | |
617 | if (nh->rtnh_len > len) | |
618 | break; | |
619 | if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) { | |
620 | if (first) | |
621 | fprintf(fp, " Oifs:"); | |
622 | else | |
623 | fprintf(fp, " "); | |
624 | } else | |
625 | fprintf(fp, "%s\tnexthop", _SL_); | |
626 | if (nh->rtnh_len > sizeof(*nh)) { | |
aba5acdf SH |
627 | parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh), nh->rtnh_len - sizeof(*nh)); |
628 | if (tb[RTA_GATEWAY]) { | |
ae665a52 | 629 | fprintf(fp, " via %s ", |
aba5acdf SH |
630 | format_host(r->rtm_family, |
631 | RTA_PAYLOAD(tb[RTA_GATEWAY]), | |
632 | RTA_DATA(tb[RTA_GATEWAY]), | |
633 | abuf, sizeof(abuf))); | |
634 | } | |
93ae2835 EB |
635 | if (tb[RTA_VIA]) { |
636 | size_t len = RTA_PAYLOAD(tb[RTA_VIA]) - 2; | |
637 | struct rtvia *via = RTA_DATA(tb[RTA_VIA]); | |
638 | fprintf(fp, "via %s %s ", | |
639 | family_name(via->rtvia_family), | |
640 | format_host(via->rtvia_family, len, via->rtvia_addr, | |
641 | abuf, sizeof(abuf))); | |
642 | } | |
f4f6d640 | 643 | if (tb[RTA_FLOW]) { |
ff24746c | 644 | __u32 to = rta_getattr_u32(tb[RTA_FLOW]); |
f4f6d640 PM |
645 | __u32 from = to>>16; |
646 | to &= 0xFFFF; | |
647 | fprintf(fp, " realm%s ", from ? "s" : ""); | |
648 | if (from) { | |
649 | fprintf(fp, "%s/", | |
650 | rtnl_rtrealm_n2a(from, b1, sizeof(b1))); | |
651 | } | |
652 | fprintf(fp, "%s", | |
653 | rtnl_rtrealm_n2a(to, b1, sizeof(b1))); | |
654 | } | |
aba5acdf SH |
655 | } |
656 | if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) { | |
657 | fprintf(fp, " %s", ll_index_to_name(nh->rtnh_ifindex)); | |
658 | if (nh->rtnh_hops != 1) | |
659 | fprintf(fp, "(ttl>%d)", nh->rtnh_hops); | |
660 | } else { | |
661 | fprintf(fp, " dev %s", ll_index_to_name(nh->rtnh_ifindex)); | |
662 | fprintf(fp, " weight %d", nh->rtnh_hops+1); | |
663 | } | |
664 | if (nh->rtnh_flags & RTNH_F_DEAD) | |
665 | fprintf(fp, " dead"); | |
666 | if (nh->rtnh_flags & RTNH_F_ONLINK) | |
667 | fprintf(fp, " onlink"); | |
668 | if (nh->rtnh_flags & RTNH_F_PERVASIVE) | |
669 | fprintf(fp, " pervasive"); | |
670 | len -= NLMSG_ALIGN(nh->rtnh_len); | |
671 | nh = RTNH_NEXT(nh); | |
672 | } | |
673 | } | |
674 | fprintf(fp, "\n"); | |
675 | fflush(fp); | |
676 | return 0; | |
677 | } | |
678 | ||
679 | ||
d1f28cf1 SH |
680 | static int parse_one_nh(struct rtmsg *r, struct rtattr *rta, |
681 | struct rtnexthop *rtnh, | |
682 | int *argcp, char ***argvp) | |
aba5acdf SH |
683 | { |
684 | int argc = *argcp; | |
685 | char **argv = *argvp; | |
686 | ||
687 | while (++argv, --argc > 0) { | |
688 | if (strcmp(*argv, "via") == 0) { | |
4d6c3796 | 689 | inet_prefix addr; |
93ae2835 | 690 | int family; |
aba5acdf | 691 | NEXT_ARG(); |
93ae2835 EB |
692 | family = read_family(*argv); |
693 | if (family == AF_UNSPEC) | |
694 | family = r->rtm_family; | |
695 | else | |
696 | NEXT_ARG(); | |
697 | get_addr(&addr, *argv, family); | |
4d6c3796 VB |
698 | if (r->rtm_family == AF_UNSPEC) |
699 | r->rtm_family = addr.family; | |
93ae2835 EB |
700 | if (addr.family == r->rtm_family) { |
701 | rta_addattr_l(rta, 4096, RTA_GATEWAY, &addr.data, addr.bytelen); | |
702 | rtnh->rtnh_len += sizeof(struct rtattr) + addr.bytelen; | |
703 | } else { | |
704 | rta_addattr_l(rta, 4096, RTA_VIA, &addr.family, addr.bytelen+2); | |
705 | rtnh->rtnh_len += sizeof(struct rtattr) + addr.bytelen+2; | |
706 | } | |
aba5acdf SH |
707 | } else if (strcmp(*argv, "dev") == 0) { |
708 | NEXT_ARG(); | |
709 | if ((rtnh->rtnh_ifindex = ll_name_to_index(*argv)) == 0) { | |
710 | fprintf(stderr, "Cannot find device \"%s\"\n", *argv); | |
711 | exit(1); | |
712 | } | |
713 | } else if (strcmp(*argv, "weight") == 0) { | |
714 | unsigned w; | |
715 | NEXT_ARG(); | |
716 | if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256) | |
717 | invarg("\"weight\" is invalid\n", *argv); | |
718 | rtnh->rtnh_hops = w - 1; | |
719 | } else if (strcmp(*argv, "onlink") == 0) { | |
720 | rtnh->rtnh_flags |= RTNH_F_ONLINK; | |
f4f6d640 PM |
721 | } else if (matches(*argv, "realms") == 0) { |
722 | __u32 realm; | |
723 | NEXT_ARG(); | |
724 | if (get_rt_realms(&realm, *argv)) | |
725 | invarg("\"realm\" value is invalid\n", *argv); | |
726 | rta_addattr32(rta, 4096, RTA_FLOW, realm); | |
727 | rtnh->rtnh_len += sizeof(struct rtattr) + 4; | |
aba5acdf SH |
728 | } else |
729 | break; | |
730 | } | |
731 | *argcp = argc; | |
732 | *argvp = argv; | |
733 | return 0; | |
734 | } | |
735 | ||
d1f28cf1 SH |
736 | static int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r, |
737 | int argc, char **argv) | |
aba5acdf SH |
738 | { |
739 | char buf[1024]; | |
740 | struct rtattr *rta = (void*)buf; | |
741 | struct rtnexthop *rtnh; | |
742 | ||
743 | rta->rta_type = RTA_MULTIPATH; | |
744 | rta->rta_len = RTA_LENGTH(0); | |
745 | rtnh = RTA_DATA(rta); | |
746 | ||
747 | while (argc > 0) { | |
748 | if (strcmp(*argv, "nexthop") != 0) { | |
749 | fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv); | |
750 | exit(-1); | |
751 | } | |
752 | if (argc <= 1) { | |
753 | fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n"); | |
754 | exit(-1); | |
755 | } | |
756 | memset(rtnh, 0, sizeof(*rtnh)); | |
757 | rtnh->rtnh_len = sizeof(*rtnh); | |
758 | rta->rta_len += rtnh->rtnh_len; | |
4d6c3796 | 759 | parse_one_nh(r, rta, rtnh, &argc, &argv); |
aba5acdf SH |
760 | rtnh = RTNH_NEXT(rtnh); |
761 | } | |
762 | ||
763 | if (rta->rta_len > RTA_LENGTH(0)) | |
764 | addattr_l(n, 1024, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta)); | |
765 | return 0; | |
766 | } | |
767 | ||
d1f28cf1 | 768 | static int iproute_modify(int cmd, unsigned flags, int argc, char **argv) |
aba5acdf | 769 | { |
aba5acdf | 770 | struct { |
4806867a SH |
771 | struct nlmsghdr n; |
772 | struct rtmsg r; | |
773 | char buf[1024]; | |
aba5acdf SH |
774 | } req; |
775 | char mxbuf[256]; | |
776 | struct rtattr * mxrta = (void*)mxbuf; | |
777 | unsigned mxlock = 0; | |
778 | char *d = NULL; | |
779 | int gw_ok = 0; | |
780 | int dst_ok = 0; | |
781 | int nhs_ok = 0; | |
782 | int scope_ok = 0; | |
783 | int table_ok = 0; | |
54e0b2e7 | 784 | int raw = 0; |
aba5acdf SH |
785 | |
786 | memset(&req, 0, sizeof(req)); | |
787 | ||
788 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); | |
789 | req.n.nlmsg_flags = NLM_F_REQUEST|flags; | |
790 | req.n.nlmsg_type = cmd; | |
791 | req.r.rtm_family = preferred_family; | |
792 | req.r.rtm_table = RT_TABLE_MAIN; | |
793 | req.r.rtm_scope = RT_SCOPE_NOWHERE; | |
794 | ||
795 | if (cmd != RTM_DELROUTE) { | |
796 | req.r.rtm_protocol = RTPROT_BOOT; | |
797 | req.r.rtm_scope = RT_SCOPE_UNIVERSE; | |
798 | req.r.rtm_type = RTN_UNICAST; | |
799 | } | |
800 | ||
801 | mxrta->rta_type = RTA_METRICS; | |
802 | mxrta->rta_len = RTA_LENGTH(0); | |
803 | ||
804 | while (argc > 0) { | |
805 | if (strcmp(*argv, "src") == 0) { | |
806 | inet_prefix addr; | |
807 | NEXT_ARG(); | |
808 | get_addr(&addr, *argv, req.r.rtm_family); | |
809 | if (req.r.rtm_family == AF_UNSPEC) | |
810 | req.r.rtm_family = addr.family; | |
811 | addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen); | |
6f7a9f4d EB |
812 | } else if (strcmp(*argv, "as") == 0) { |
813 | inet_prefix addr; | |
814 | NEXT_ARG(); | |
815 | if (strcmp(*argv, "to") == 0) { | |
816 | NEXT_ARG(); | |
817 | } | |
818 | get_addr(&addr, *argv, req.r.rtm_family); | |
819 | if (req.r.rtm_family == AF_UNSPEC) | |
820 | req.r.rtm_family = addr.family; | |
821 | addattr_l(&req.n, sizeof(req), RTA_NEWDST, &addr.data, addr.bytelen); | |
aba5acdf SH |
822 | } else if (strcmp(*argv, "via") == 0) { |
823 | inet_prefix addr; | |
93ae2835 | 824 | int family; |
aba5acdf SH |
825 | gw_ok = 1; |
826 | NEXT_ARG(); | |
93ae2835 EB |
827 | family = read_family(*argv); |
828 | if (family == AF_UNSPEC) | |
829 | family = req.r.rtm_family; | |
830 | else | |
831 | NEXT_ARG(); | |
832 | get_addr(&addr, *argv, family); | |
aba5acdf SH |
833 | if (req.r.rtm_family == AF_UNSPEC) |
834 | req.r.rtm_family = addr.family; | |
93ae2835 EB |
835 | if (addr.family == req.r.rtm_family) |
836 | addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen); | |
837 | else | |
838 | addattr_l(&req.n, sizeof(req), RTA_VIA, &addr.family, addr.bytelen+2); | |
aba5acdf SH |
839 | } else if (strcmp(*argv, "from") == 0) { |
840 | inet_prefix addr; | |
841 | NEXT_ARG(); | |
842 | get_prefix(&addr, *argv, req.r.rtm_family); | |
843 | if (req.r.rtm_family == AF_UNSPEC) | |
844 | req.r.rtm_family = addr.family; | |
845 | if (addr.bytelen) | |
846 | addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen); | |
847 | req.r.rtm_src_len = addr.bitlen; | |
848 | } else if (strcmp(*argv, "tos") == 0 || | |
849 | matches(*argv, "dsfield") == 0) { | |
850 | __u32 tos; | |
851 | NEXT_ARG(); | |
852 | if (rtnl_dsfield_a2n(&tos, *argv)) | |
853 | invarg("\"tos\" value is invalid\n", *argv); | |
854 | req.r.rtm_tos = tos; | |
855 | } else if (matches(*argv, "metric") == 0 || | |
856 | matches(*argv, "priority") == 0 || | |
857 | matches(*argv, "preference") == 0) { | |
858 | __u32 metric; | |
859 | NEXT_ARG(); | |
860 | if (get_u32(&metric, *argv, 0)) | |
861 | invarg("\"metric\" value is invalid\n", *argv); | |
862 | addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric); | |
863 | } else if (strcmp(*argv, "scope") == 0) { | |
f332d169 | 864 | __u32 scope = 0; |
aba5acdf SH |
865 | NEXT_ARG(); |
866 | if (rtnl_rtscope_a2n(&scope, *argv)) | |
867 | invarg("invalid \"scope\" value\n", *argv); | |
868 | req.r.rtm_scope = scope; | |
869 | scope_ok = 1; | |
870 | } else if (strcmp(*argv, "mtu") == 0) { | |
871 | unsigned mtu; | |
872 | NEXT_ARG(); | |
873 | if (strcmp(*argv, "lock") == 0) { | |
874 | mxlock |= (1<<RTAX_MTU); | |
875 | NEXT_ARG(); | |
876 | } | |
877 | if (get_unsigned(&mtu, *argv, 0)) | |
878 | invarg("\"mtu\" value is invalid\n", *argv); | |
879 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu); | |
71e58151 GBY |
880 | } else if (strcmp(*argv, "hoplimit") == 0) { |
881 | unsigned hoplimit; | |
882 | NEXT_ARG(); | |
883 | if (strcmp(*argv, "lock") == 0) { | |
884 | mxlock |= (1<<RTAX_HOPLIMIT); | |
885 | NEXT_ARG(); | |
886 | } | |
887 | if (get_unsigned(&hoplimit, *argv, 0)) | |
888 | invarg("\"hoplimit\" value is invalid\n", *argv); | |
889 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_HOPLIMIT, hoplimit); | |
aba5acdf SH |
890 | } else if (strcmp(*argv, "advmss") == 0) { |
891 | unsigned mss; | |
892 | NEXT_ARG(); | |
893 | if (strcmp(*argv, "lock") == 0) { | |
894 | mxlock |= (1<<RTAX_ADVMSS); | |
895 | NEXT_ARG(); | |
896 | } | |
897 | if (get_unsigned(&mss, *argv, 0)) | |
898 | invarg("\"mss\" value is invalid\n", *argv); | |
899 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss); | |
aba5acdf SH |
900 | } else if (matches(*argv, "reordering") == 0) { |
901 | unsigned reord; | |
902 | NEXT_ARG(); | |
903 | if (strcmp(*argv, "lock") == 0) { | |
904 | mxlock |= (1<<RTAX_REORDERING); | |
905 | NEXT_ARG(); | |
906 | } | |
907 | if (get_unsigned(&reord, *argv, 0)) | |
908 | invarg("\"reordering\" value is invalid\n", *argv); | |
909 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord); | |
aba5acdf SH |
910 | } else if (strcmp(*argv, "rtt") == 0) { |
911 | unsigned rtt; | |
912 | NEXT_ARG(); | |
913 | if (strcmp(*argv, "lock") == 0) { | |
914 | mxlock |= (1<<RTAX_RTT); | |
915 | NEXT_ARG(); | |
916 | } | |
81d03dc3 | 917 | if (get_time_rtt(&rtt, *argv, &raw)) |
aba5acdf | 918 | invarg("\"rtt\" value is invalid\n", *argv); |
0612519e | 919 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT, |
54e0b2e7 RJ |
920 | (raw) ? rtt : rtt * 8); |
921 | } else if (strcmp(*argv, "rto_min") == 0) { | |
922 | unsigned rto_min; | |
923 | NEXT_ARG(); | |
924 | mxlock |= (1<<RTAX_RTO_MIN); | |
81d03dc3 | 925 | if (get_time_rtt(&rto_min, *argv, &raw)) |
54e0b2e7 RJ |
926 | invarg("\"rto_min\" value is invalid\n", |
927 | *argv); | |
928 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTO_MIN, | |
929 | rto_min); | |
aba5acdf SH |
930 | } else if (matches(*argv, "window") == 0) { |
931 | unsigned win; | |
932 | NEXT_ARG(); | |
933 | if (strcmp(*argv, "lock") == 0) { | |
934 | mxlock |= (1<<RTAX_WINDOW); | |
935 | NEXT_ARG(); | |
936 | } | |
937 | if (get_unsigned(&win, *argv, 0)) | |
938 | invarg("\"window\" value is invalid\n", *argv); | |
939 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win); | |
940 | } else if (matches(*argv, "cwnd") == 0) { | |
941 | unsigned win; | |
942 | NEXT_ARG(); | |
943 | if (strcmp(*argv, "lock") == 0) { | |
944 | mxlock |= (1<<RTAX_CWND); | |
945 | NEXT_ARG(); | |
946 | } | |
947 | if (get_unsigned(&win, *argv, 0)) | |
948 | invarg("\"cwnd\" value is invalid\n", *argv); | |
949 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win); | |
a1f1143e VW |
950 | } else if (matches(*argv, "initcwnd") == 0) { |
951 | unsigned win; | |
952 | NEXT_ARG(); | |
953 | if (strcmp(*argv, "lock") == 0) { | |
954 | mxlock |= (1<<RTAX_INITCWND); | |
955 | NEXT_ARG(); | |
956 | } | |
957 | if (get_unsigned(&win, *argv, 0)) | |
958 | invarg("\"initcwnd\" value is invalid\n", *argv); | |
959 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITCWND, win); | |
f5fd8003 | 960 | } else if (matches(*argv, "initrwnd") == 0) { |
961 | unsigned win; | |
962 | NEXT_ARG(); | |
963 | if (strcmp(*argv, "lock") == 0) { | |
964 | mxlock |= (1<<RTAX_INITRWND); | |
965 | NEXT_ARG(); | |
966 | } | |
967 | if (get_unsigned(&win, *argv, 0)) | |
968 | invarg("\"initrwnd\" value is invalid\n", *argv); | |
969 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_INITRWND, win); | |
29d1f730 FW |
970 | } else if (matches(*argv, "features") == 0) { |
971 | unsigned int features = 0; | |
972 | ||
973 | while (argc > 0) { | |
974 | NEXT_ARG(); | |
975 | ||
976 | if (strcmp(*argv, "ecn") == 0) | |
977 | features |= RTAX_FEATURE_ECN; | |
978 | else | |
979 | invarg("\"features\" value not valid\n", *argv); | |
980 | break; | |
981 | } | |
982 | ||
983 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_FEATURES, features); | |
b37f2c89 CW |
984 | } else if (matches(*argv, "quickack") == 0) { |
985 | unsigned quickack; | |
986 | NEXT_ARG(); | |
987 | if (get_unsigned(&quickack, *argv, 0)) | |
988 | invarg("\"quickack\" value is invalid\n", *argv); | |
989 | if (quickack != 1 && quickack != 0) | |
990 | invarg("\"quickack\" value should be 0 or 1\n", *argv); | |
991 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_QUICKACK, quickack); | |
6ef87f9c DB |
992 | } else if (matches(*argv, "congctl") == 0) { |
993 | NEXT_ARG(); | |
994 | if (strcmp(*argv, "lock") == 0) { | |
995 | mxlock |= 1 << RTAX_CC_ALGO; | |
996 | NEXT_ARG(); | |
997 | } | |
998 | rta_addattr_l(mxrta, sizeof(mxbuf), RTAX_CC_ALGO, *argv, | |
999 | strlen(*argv)); | |
aba5acdf SH |
1000 | } else if (matches(*argv, "rttvar") == 0) { |
1001 | unsigned win; | |
1002 | NEXT_ARG(); | |
1003 | if (strcmp(*argv, "lock") == 0) { | |
1004 | mxlock |= (1<<RTAX_RTTVAR); | |
1005 | NEXT_ARG(); | |
1006 | } | |
81d03dc3 | 1007 | if (get_time_rtt(&win, *argv, &raw)) |
aba5acdf | 1008 | invarg("\"rttvar\" value is invalid\n", *argv); |
54e0b2e7 RJ |
1009 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR, |
1010 | (raw) ? win : win * 4); | |
aba5acdf SH |
1011 | } else if (matches(*argv, "ssthresh") == 0) { |
1012 | unsigned win; | |
1013 | NEXT_ARG(); | |
1014 | if (strcmp(*argv, "lock") == 0) { | |
1015 | mxlock |= (1<<RTAX_SSTHRESH); | |
1016 | NEXT_ARG(); | |
1017 | } | |
1018 | if (get_unsigned(&win, *argv, 0)) | |
1019 | invarg("\"ssthresh\" value is invalid\n", *argv); | |
1020 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win); | |
1021 | } else if (matches(*argv, "realms") == 0) { | |
1022 | __u32 realm; | |
1023 | NEXT_ARG(); | |
1024 | if (get_rt_realms(&realm, *argv)) | |
1025 | invarg("\"realm\" value is invalid\n", *argv); | |
1026 | addattr32(&req.n, sizeof(req), RTA_FLOW, realm); | |
1027 | } else if (strcmp(*argv, "onlink") == 0) { | |
1028 | req.r.rtm_flags |= RTNH_F_ONLINK; | |
aba5acdf SH |
1029 | } else if (strcmp(*argv, "nexthop") == 0) { |
1030 | nhs_ok = 1; | |
1031 | break; | |
1032 | } else if (matches(*argv, "protocol") == 0) { | |
f332d169 | 1033 | __u32 prot; |
aba5acdf SH |
1034 | NEXT_ARG(); |
1035 | if (rtnl_rtprot_a2n(&prot, *argv)) | |
1036 | invarg("\"protocol\" value is invalid\n", *argv); | |
1037 | req.r.rtm_protocol = prot; | |
aba5acdf | 1038 | } else if (matches(*argv, "table") == 0) { |
f332d169 | 1039 | __u32 tid; |
aba5acdf SH |
1040 | NEXT_ARG(); |
1041 | if (rtnl_rttable_a2n(&tid, *argv)) | |
1042 | invarg("\"table\" value is invalid\n", *argv); | |
34e95647 PM |
1043 | if (tid < 256) |
1044 | req.r.rtm_table = tid; | |
1045 | else { | |
1046 | req.r.rtm_table = RT_TABLE_UNSPEC; | |
1047 | addattr32(&req.n, sizeof(req), RTA_TABLE, tid); | |
1048 | } | |
aba5acdf SH |
1049 | table_ok = 1; |
1050 | } else if (strcmp(*argv, "dev") == 0 || | |
1051 | strcmp(*argv, "oif") == 0) { | |
1052 | NEXT_ARG(); | |
1053 | d = *argv; | |
1054 | } else { | |
1055 | int type; | |
1056 | inet_prefix dst; | |
1057 | ||
1058 | if (strcmp(*argv, "to") == 0) { | |
1059 | NEXT_ARG(); | |
1060 | } | |
1061 | if ((**argv < '0' || **argv > '9') && | |
1062 | rtnl_rtntype_a2n(&type, *argv) == 0) { | |
1063 | NEXT_ARG(); | |
1064 | req.r.rtm_type = type; | |
aba5acdf SH |
1065 | } |
1066 | ||
1067 | if (matches(*argv, "help") == 0) | |
1068 | usage(); | |
1069 | if (dst_ok) | |
1070 | duparg2("to", *argv); | |
1071 | get_prefix(&dst, *argv, req.r.rtm_family); | |
1072 | if (req.r.rtm_family == AF_UNSPEC) | |
1073 | req.r.rtm_family = dst.family; | |
1074 | req.r.rtm_dst_len = dst.bitlen; | |
1075 | dst_ok = 1; | |
1076 | if (dst.bytelen) | |
1077 | addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen); | |
1078 | } | |
1079 | argc--; argv++; | |
1080 | } | |
1081 | ||
922b4822 PS |
1082 | if (!dst_ok) |
1083 | usage(); | |
1084 | ||
aba5acdf SH |
1085 | if (d || nhs_ok) { |
1086 | int idx; | |
1087 | ||
aba5acdf SH |
1088 | if (d) { |
1089 | if ((idx = ll_name_to_index(d)) == 0) { | |
1090 | fprintf(stderr, "Cannot find device \"%s\"\n", d); | |
1091 | return -1; | |
1092 | } | |
1093 | addattr32(&req.n, sizeof(req), RTA_OIF, idx); | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | if (mxrta->rta_len > RTA_LENGTH(0)) { | |
1098 | if (mxlock) | |
1099 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock); | |
1100 | addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta)); | |
1101 | } | |
1102 | ||
1103 | if (nhs_ok) | |
1104 | parse_nexthops(&req.n, &req.r, argc, argv); | |
1105 | ||
1106 | if (!table_ok) { | |
1107 | if (req.r.rtm_type == RTN_LOCAL || | |
1108 | req.r.rtm_type == RTN_BROADCAST || | |
1109 | req.r.rtm_type == RTN_NAT || | |
1110 | req.r.rtm_type == RTN_ANYCAST) | |
1111 | req.r.rtm_table = RT_TABLE_LOCAL; | |
1112 | } | |
1113 | if (!scope_ok) { | |
1114 | if (req.r.rtm_type == RTN_LOCAL || | |
1115 | req.r.rtm_type == RTN_NAT) | |
1116 | req.r.rtm_scope = RT_SCOPE_HOST; | |
1117 | else if (req.r.rtm_type == RTN_BROADCAST || | |
1118 | req.r.rtm_type == RTN_MULTICAST || | |
1119 | req.r.rtm_type == RTN_ANYCAST) | |
1120 | req.r.rtm_scope = RT_SCOPE_LINK; | |
1121 | else if (req.r.rtm_type == RTN_UNICAST || | |
1122 | req.r.rtm_type == RTN_UNSPEC) { | |
1123 | if (cmd == RTM_DELROUTE) | |
1124 | req.r.rtm_scope = RT_SCOPE_NOWHERE; | |
1125 | else if (!gw_ok && !nhs_ok) | |
1126 | req.r.rtm_scope = RT_SCOPE_LINK; | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | if (req.r.rtm_family == AF_UNSPEC) | |
1131 | req.r.rtm_family = AF_INET; | |
1132 | ||
cd70f3f5 | 1133 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0) |
42ecedd4 | 1134 | return -1; |
aba5acdf SH |
1135 | |
1136 | return 0; | |
1137 | } | |
1138 | ||
1139 | static int rtnl_rtcache_request(struct rtnl_handle *rth, int family) | |
1140 | { | |
1141 | struct { | |
1142 | struct nlmsghdr nlh; | |
1143 | struct rtmsg rtm; | |
1144 | } req; | |
1145 | struct sockaddr_nl nladdr; | |
1146 | ||
1147 | memset(&nladdr, 0, sizeof(nladdr)); | |
1148 | memset(&req, 0, sizeof(req)); | |
1149 | nladdr.nl_family = AF_NETLINK; | |
1150 | ||
1151 | req.nlh.nlmsg_len = sizeof(req); | |
1152 | req.nlh.nlmsg_type = RTM_GETROUTE; | |
1153 | req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST; | |
1154 | req.nlh.nlmsg_pid = 0; | |
1155 | req.nlh.nlmsg_seq = rth->dump = ++rth->seq; | |
1156 | req.rtm.rtm_family = family; | |
1157 | req.rtm.rtm_flags |= RTM_F_CLONED; | |
1158 | ||
1159 | return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr)); | |
1160 | } | |
1161 | ||
1162 | static int iproute_flush_cache(void) | |
1163 | { | |
1164 | #define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush" | |
1165 | ||
1166 | int len; | |
1167 | int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY); | |
1168 | char *buffer = "-1"; | |
1169 | ||
1170 | if (flush_fd < 0) { | |
1171 | fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH); | |
1172 | return -1; | |
1173 | } | |
1174 | ||
1175 | len = strlen (buffer); | |
ae665a52 | 1176 | |
aba5acdf SH |
1177 | if ((write (flush_fd, (void *)buffer, len)) < len) { |
1178 | fprintf (stderr, "Cannot flush routing cache\n"); | |
25352af7 | 1179 | close(flush_fd); |
aba5acdf SH |
1180 | return -1; |
1181 | } | |
1182 | close(flush_fd); | |
1183 | return 0; | |
1184 | } | |
1185 | ||
76c61b34 PE |
1186 | static __u32 route_dump_magic = 0x45311224; |
1187 | ||
d1f28cf1 SH |
1188 | static int save_route(const struct sockaddr_nl *who, struct nlmsghdr *n, |
1189 | void *arg) | |
f4ff11e3 DS |
1190 | { |
1191 | int ret; | |
1192 | int len = n->nlmsg_len; | |
1193 | struct rtmsg *r = NLMSG_DATA(n); | |
1194 | struct rtattr *tb[RTA_MAX+1]; | |
f3a2ddc1 | 1195 | int host_len; |
f4ff11e3 | 1196 | |
f3a2ddc1 | 1197 | host_len = af_bit_len(r->rtm_family); |
f4ff11e3 DS |
1198 | len -= NLMSG_LENGTH(sizeof(*r)); |
1199 | parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len); | |
1200 | ||
1201 | if (!filter_nlmsg(n, tb, host_len)) | |
1202 | return 0; | |
1203 | ||
1204 | ret = write(STDOUT_FILENO, n, n->nlmsg_len); | |
1205 | if ((ret > 0) && (ret != n->nlmsg_len)) { | |
1206 | fprintf(stderr, "Short write while saving nlmsg\n"); | |
1207 | ret = -EIO; | |
1208 | } | |
1209 | ||
1210 | return ret == n->nlmsg_len ? 0 : ret; | |
1211 | } | |
aba5acdf | 1212 | |
76c61b34 PE |
1213 | static int save_route_prep(void) |
1214 | { | |
1215 | int ret; | |
1216 | ||
1217 | if (isatty(STDOUT_FILENO)) { | |
14645ec2 | 1218 | fprintf(stderr, "Not sending a binary stream to stdout\n"); |
76c61b34 PE |
1219 | return -1; |
1220 | } | |
1221 | ||
1222 | ret = write(STDOUT_FILENO, &route_dump_magic, sizeof(route_dump_magic)); | |
1223 | if (ret != sizeof(route_dump_magic)) { | |
1224 | fprintf(stderr, "Can't write magic to dump file\n"); | |
1225 | return -1; | |
1226 | } | |
1227 | ||
1228 | return 0; | |
1229 | } | |
1230 | ||
f4ff11e3 | 1231 | static int iproute_list_flush_or_save(int argc, char **argv, int action) |
aba5acdf SH |
1232 | { |
1233 | int do_ipv6 = preferred_family; | |
aba5acdf SH |
1234 | char *id = NULL; |
1235 | char *od = NULL; | |
b0373bfb | 1236 | unsigned int mark = 0; |
f4ff11e3 DS |
1237 | rtnl_filter_t filter_fn; |
1238 | ||
76c61b34 PE |
1239 | if (action == IPROUTE_SAVE) { |
1240 | if (save_route_prep()) | |
1241 | return -1; | |
1242 | ||
f4ff11e3 | 1243 | filter_fn = save_route; |
76c61b34 | 1244 | } else |
f4ff11e3 | 1245 | filter_fn = print_route; |
aba5acdf | 1246 | |
093b7646 | 1247 | iproute_reset_filter(0); |
aba5acdf SH |
1248 | filter.tb = RT_TABLE_MAIN; |
1249 | ||
f4ff11e3 | 1250 | if ((action == IPROUTE_FLUSH) && argc <= 0) { |
aba5acdf SH |
1251 | fprintf(stderr, "\"ip route flush\" requires arguments.\n"); |
1252 | return -1; | |
1253 | } | |
1254 | ||
1255 | while (argc > 0) { | |
1256 | if (matches(*argv, "table") == 0) { | |
f332d169 | 1257 | __u32 tid; |
aba5acdf SH |
1258 | NEXT_ARG(); |
1259 | if (rtnl_rttable_a2n(&tid, *argv)) { | |
1260 | if (strcmp(*argv, "all") == 0) { | |
bd4bcdad | 1261 | filter.tb = 0; |
aba5acdf | 1262 | } else if (strcmp(*argv, "cache") == 0) { |
bd4bcdad | 1263 | filter.cloned = 1; |
aba5acdf SH |
1264 | } else if (strcmp(*argv, "help") == 0) { |
1265 | usage(); | |
1266 | } else { | |
1267 | invarg("table id value is invalid\n", *argv); | |
1268 | } | |
bd4bcdad PM |
1269 | } else |
1270 | filter.tb = tid; | |
aba5acdf SH |
1271 | } else if (matches(*argv, "cached") == 0 || |
1272 | matches(*argv, "cloned") == 0) { | |
bd4bcdad | 1273 | filter.cloned = 1; |
aba5acdf SH |
1274 | } else if (strcmp(*argv, "tos") == 0 || |
1275 | matches(*argv, "dsfield") == 0) { | |
1276 | __u32 tos; | |
1277 | NEXT_ARG(); | |
1278 | if (rtnl_dsfield_a2n(&tos, *argv)) | |
1279 | invarg("TOS value is invalid\n", *argv); | |
1280 | filter.tos = tos; | |
1281 | filter.tosmask = -1; | |
1282 | } else if (matches(*argv, "protocol") == 0) { | |
f332d169 | 1283 | __u32 prot = 0; |
aba5acdf SH |
1284 | NEXT_ARG(); |
1285 | filter.protocolmask = -1; | |
1286 | if (rtnl_rtprot_a2n(&prot, *argv)) { | |
1287 | if (strcmp(*argv, "all") != 0) | |
1288 | invarg("invalid \"protocol\"\n", *argv); | |
1289 | prot = 0; | |
1290 | filter.protocolmask = 0; | |
1291 | } | |
1292 | filter.protocol = prot; | |
1293 | } else if (matches(*argv, "scope") == 0) { | |
f332d169 | 1294 | __u32 scope = 0; |
aba5acdf SH |
1295 | NEXT_ARG(); |
1296 | filter.scopemask = -1; | |
1297 | if (rtnl_rtscope_a2n(&scope, *argv)) { | |
1298 | if (strcmp(*argv, "all") != 0) | |
1299 | invarg("invalid \"scope\"\n", *argv); | |
1300 | scope = RT_SCOPE_NOWHERE; | |
1301 | filter.scopemask = 0; | |
1302 | } | |
1303 | filter.scope = scope; | |
1304 | } else if (matches(*argv, "type") == 0) { | |
1305 | int type; | |
1306 | NEXT_ARG(); | |
1307 | filter.typemask = -1; | |
1308 | if (rtnl_rtntype_a2n(&type, *argv)) | |
1309 | invarg("node type value is invalid\n", *argv); | |
1310 | filter.type = type; | |
1311 | } else if (strcmp(*argv, "dev") == 0 || | |
1312 | strcmp(*argv, "oif") == 0) { | |
1313 | NEXT_ARG(); | |
1314 | od = *argv; | |
1315 | } else if (strcmp(*argv, "iif") == 0) { | |
1316 | NEXT_ARG(); | |
1317 | id = *argv; | |
b0373bfb ED |
1318 | } else if (strcmp(*argv, "mark") == 0) { |
1319 | NEXT_ARG(); | |
1320 | get_unsigned(&mark, *argv, 0); | |
1321 | filter.markmask = -1; | |
aba5acdf | 1322 | } else if (strcmp(*argv, "via") == 0) { |
93ae2835 | 1323 | int family; |
aba5acdf | 1324 | NEXT_ARG(); |
93ae2835 EB |
1325 | family = read_family(*argv); |
1326 | if (family == AF_UNSPEC) | |
1327 | family = do_ipv6; | |
1328 | else | |
1329 | NEXT_ARG(); | |
1330 | get_prefix(&filter.rvia, *argv, family); | |
aba5acdf SH |
1331 | } else if (strcmp(*argv, "src") == 0) { |
1332 | NEXT_ARG(); | |
1333 | get_prefix(&filter.rprefsrc, *argv, do_ipv6); | |
1334 | } else if (matches(*argv, "realms") == 0) { | |
1335 | __u32 realm; | |
1336 | NEXT_ARG(); | |
1337 | if (get_rt_realms(&realm, *argv)) | |
1338 | invarg("invalid realms\n", *argv); | |
1339 | filter.realm = realm; | |
1340 | filter.realmmask = ~0U; | |
1341 | if ((filter.realm&0xFFFF) == 0 && | |
1342 | (*argv)[strlen(*argv) - 1] == '/') | |
1343 | filter.realmmask &= ~0xFFFF; | |
1344 | if ((filter.realm&0xFFFF0000U) == 0 && | |
1345 | (strchr(*argv, '/') == NULL || | |
1346 | (*argv)[0] == '/')) | |
1347 | filter.realmmask &= ~0xFFFF0000U; | |
1348 | } else if (matches(*argv, "from") == 0) { | |
1349 | NEXT_ARG(); | |
1350 | if (matches(*argv, "root") == 0) { | |
1351 | NEXT_ARG(); | |
1352 | get_prefix(&filter.rsrc, *argv, do_ipv6); | |
1353 | } else if (matches(*argv, "match") == 0) { | |
1354 | NEXT_ARG(); | |
1355 | get_prefix(&filter.msrc, *argv, do_ipv6); | |
1356 | } else { | |
1357 | if (matches(*argv, "exact") == 0) { | |
1358 | NEXT_ARG(); | |
1359 | } | |
1360 | get_prefix(&filter.msrc, *argv, do_ipv6); | |
1361 | filter.rsrc = filter.msrc; | |
1362 | } | |
1363 | } else { | |
1364 | if (matches(*argv, "to") == 0) { | |
1365 | NEXT_ARG(); | |
1366 | } | |
1367 | if (matches(*argv, "root") == 0) { | |
1368 | NEXT_ARG(); | |
1369 | get_prefix(&filter.rdst, *argv, do_ipv6); | |
1370 | } else if (matches(*argv, "match") == 0) { | |
1371 | NEXT_ARG(); | |
1372 | get_prefix(&filter.mdst, *argv, do_ipv6); | |
1373 | } else { | |
1374 | if (matches(*argv, "exact") == 0) { | |
1375 | NEXT_ARG(); | |
1376 | } | |
1377 | get_prefix(&filter.mdst, *argv, do_ipv6); | |
1378 | filter.rdst = filter.mdst; | |
1379 | } | |
1380 | } | |
1381 | argc--; argv++; | |
1382 | } | |
1383 | ||
1384 | if (do_ipv6 == AF_UNSPEC && filter.tb) | |
1385 | do_ipv6 = AF_INET; | |
1386 | ||
aba5acdf SH |
1387 | if (id || od) { |
1388 | int idx; | |
1389 | ||
1390 | if (id) { | |
1391 | if ((idx = ll_name_to_index(id)) == 0) { | |
1392 | fprintf(stderr, "Cannot find device \"%s\"\n", id); | |
1393 | return -1; | |
1394 | } | |
1395 | filter.iif = idx; | |
1396 | filter.iifmask = -1; | |
1397 | } | |
1398 | if (od) { | |
1399 | if ((idx = ll_name_to_index(od)) == 0) { | |
1400 | fprintf(stderr, "Cannot find device \"%s\"\n", od); | |
1401 | return -1; | |
1402 | } | |
1403 | filter.oif = idx; | |
1404 | filter.oifmask = -1; | |
1405 | } | |
1406 | } | |
b0373bfb | 1407 | filter.mark = mark; |
aba5acdf | 1408 | |
f4ff11e3 | 1409 | if (action == IPROUTE_FLUSH) { |
aba5acdf SH |
1410 | int round = 0; |
1411 | char flushb[4096-512]; | |
33551240 | 1412 | time_t start = time(0); |
aba5acdf | 1413 | |
bd4bcdad | 1414 | if (filter.cloned) { |
aba5acdf SH |
1415 | if (do_ipv6 != AF_INET6) { |
1416 | iproute_flush_cache(); | |
1417 | if (show_stats) | |
1418 | printf("*** IPv4 routing cache is flushed.\n"); | |
1419 | } | |
1420 | if (do_ipv6 == AF_INET) | |
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | filter.flushb = flushb; | |
1425 | filter.flushp = 0; | |
1426 | filter.flushe = sizeof(flushb); | |
aba5acdf SH |
1427 | |
1428 | for (;;) { | |
1429 | if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) { | |
1430 | perror("Cannot send dump request"); | |
1431 | exit(1); | |
1432 | } | |
1433 | filter.flushed = 0; | |
cd70f3f5 | 1434 | if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) { |
aba5acdf SH |
1435 | fprintf(stderr, "Flush terminated\n"); |
1436 | exit(1); | |
1437 | } | |
1438 | if (filter.flushed == 0) { | |
f0b34d2d AH |
1439 | if (show_stats) { |
1440 | if (round == 0 && (!filter.cloned || do_ipv6 == AF_INET6)) | |
1441 | printf("Nothing to flush.\n"); | |
1442 | else | |
1443 | printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":""); | |
1444 | } | |
aba5acdf SH |
1445 | fflush(stdout); |
1446 | return 0; | |
1447 | } | |
1448 | round++; | |
1449 | if (flush_update() < 0) | |
1450 | exit(1); | |
33551240 SH |
1451 | |
1452 | if (time(0) - start > 30) { | |
1453 | printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n", | |
5d8a7529 | 1454 | (long)(time(0) - start), filter.flushed); |
33551240 SH |
1455 | exit(1); |
1456 | } | |
1457 | ||
aba5acdf SH |
1458 | if (show_stats) { |
1459 | printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed); | |
1460 | fflush(stdout); | |
1461 | } | |
1462 | } | |
1463 | } | |
1464 | ||
bd4bcdad | 1465 | if (!filter.cloned) { |
aba5acdf SH |
1466 | if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) { |
1467 | perror("Cannot send dump request"); | |
1468 | exit(1); | |
1469 | } | |
1470 | } else { | |
1471 | if (rtnl_rtcache_request(&rth, do_ipv6) < 0) { | |
1472 | perror("Cannot send dump request"); | |
1473 | exit(1); | |
1474 | } | |
1475 | } | |
1476 | ||
cd70f3f5 | 1477 | if (rtnl_dump_filter(&rth, filter_fn, stdout) < 0) { |
aba5acdf SH |
1478 | fprintf(stderr, "Dump terminated\n"); |
1479 | exit(1); | |
1480 | } | |
1481 | ||
1482 | exit(0); | |
1483 | } | |
1484 | ||
1485 | ||
d1f28cf1 | 1486 | static int iproute_get(int argc, char **argv) |
aba5acdf | 1487 | { |
aba5acdf | 1488 | struct { |
4806867a SH |
1489 | struct nlmsghdr n; |
1490 | struct rtmsg r; | |
1491 | char buf[1024]; | |
aba5acdf SH |
1492 | } req; |
1493 | char *idev = NULL; | |
1494 | char *odev = NULL; | |
1495 | int connected = 0; | |
1496 | int from_ok = 0; | |
b0373bfb | 1497 | unsigned int mark = 0; |
aba5acdf SH |
1498 | |
1499 | memset(&req, 0, sizeof(req)); | |
1500 | ||
093b7646 | 1501 | iproute_reset_filter(0); |
c73f3e02 | 1502 | filter.cloned = 2; |
aba5acdf SH |
1503 | |
1504 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); | |
1505 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
1506 | req.n.nlmsg_type = RTM_GETROUTE; | |
1507 | req.r.rtm_family = preferred_family; | |
1508 | req.r.rtm_table = 0; | |
1509 | req.r.rtm_protocol = 0; | |
1510 | req.r.rtm_scope = 0; | |
1511 | req.r.rtm_type = 0; | |
1512 | req.r.rtm_src_len = 0; | |
1513 | req.r.rtm_dst_len = 0; | |
1514 | req.r.rtm_tos = 0; | |
ae665a52 | 1515 | |
aba5acdf SH |
1516 | while (argc > 0) { |
1517 | if (strcmp(*argv, "tos") == 0 || | |
1518 | matches(*argv, "dsfield") == 0) { | |
1519 | __u32 tos; | |
1520 | NEXT_ARG(); | |
1521 | if (rtnl_dsfield_a2n(&tos, *argv)) | |
1522 | invarg("TOS value is invalid\n", *argv); | |
1523 | req.r.rtm_tos = tos; | |
1524 | } else if (matches(*argv, "from") == 0) { | |
1525 | inet_prefix addr; | |
1526 | NEXT_ARG(); | |
1527 | if (matches(*argv, "help") == 0) | |
1528 | usage(); | |
1529 | from_ok = 1; | |
1530 | get_prefix(&addr, *argv, req.r.rtm_family); | |
1531 | if (req.r.rtm_family == AF_UNSPEC) | |
1532 | req.r.rtm_family = addr.family; | |
1533 | if (addr.bytelen) | |
1534 | addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen); | |
1535 | req.r.rtm_src_len = addr.bitlen; | |
1536 | } else if (matches(*argv, "iif") == 0) { | |
1537 | NEXT_ARG(); | |
1538 | idev = *argv; | |
b0373bfb ED |
1539 | } else if (matches(*argv, "mark") == 0) { |
1540 | NEXT_ARG(); | |
1541 | get_unsigned(&mark, *argv, 0); | |
aba5acdf SH |
1542 | } else if (matches(*argv, "oif") == 0 || |
1543 | strcmp(*argv, "dev") == 0) { | |
1544 | NEXT_ARG(); | |
1545 | odev = *argv; | |
1546 | } else if (matches(*argv, "notify") == 0) { | |
1547 | req.r.rtm_flags |= RTM_F_NOTIFY; | |
1548 | } else if (matches(*argv, "connected") == 0) { | |
1549 | connected = 1; | |
1550 | } else { | |
1551 | inet_prefix addr; | |
1552 | if (strcmp(*argv, "to") == 0) { | |
1553 | NEXT_ARG(); | |
1554 | } | |
1555 | if (matches(*argv, "help") == 0) | |
1556 | usage(); | |
1557 | get_prefix(&addr, *argv, req.r.rtm_family); | |
1558 | if (req.r.rtm_family == AF_UNSPEC) | |
1559 | req.r.rtm_family = addr.family; | |
1560 | if (addr.bytelen) | |
1561 | addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen); | |
1562 | req.r.rtm_dst_len = addr.bitlen; | |
1563 | } | |
1564 | argc--; argv++; | |
1565 | } | |
1566 | ||
1567 | if (req.r.rtm_dst_len == 0) { | |
14645ec2 | 1568 | fprintf(stderr, "need at least a destination address\n"); |
aba5acdf SH |
1569 | exit(1); |
1570 | } | |
1571 | ||
aba5acdf SH |
1572 | if (idev || odev) { |
1573 | int idx; | |
1574 | ||
1575 | if (idev) { | |
1576 | if ((idx = ll_name_to_index(idev)) == 0) { | |
1577 | fprintf(stderr, "Cannot find device \"%s\"\n", idev); | |
1578 | return -1; | |
1579 | } | |
1580 | addattr32(&req.n, sizeof(req), RTA_IIF, idx); | |
1581 | } | |
1582 | if (odev) { | |
1583 | if ((idx = ll_name_to_index(odev)) == 0) { | |
1584 | fprintf(stderr, "Cannot find device \"%s\"\n", odev); | |
1585 | return -1; | |
1586 | } | |
1587 | addattr32(&req.n, sizeof(req), RTA_OIF, idx); | |
1588 | } | |
1589 | } | |
b0373bfb ED |
1590 | if (mark) |
1591 | addattr32(&req.n, sizeof(req), RTA_MARK, mark); | |
aba5acdf SH |
1592 | |
1593 | if (req.r.rtm_family == AF_UNSPEC) | |
1594 | req.r.rtm_family = AF_INET; | |
1595 | ||
cd70f3f5 | 1596 | if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0) |
aba5acdf SH |
1597 | exit(2); |
1598 | ||
1599 | if (connected && !from_ok) { | |
1600 | struct rtmsg *r = NLMSG_DATA(&req.n); | |
1601 | int len = req.n.nlmsg_len; | |
1602 | struct rtattr * tb[RTA_MAX+1]; | |
1603 | ||
1604 | if (print_route(NULL, &req.n, (void*)stdout) < 0) { | |
1605 | fprintf(stderr, "An error :-)\n"); | |
1606 | exit(1); | |
1607 | } | |
1608 | ||
1609 | if (req.n.nlmsg_type != RTM_NEWROUTE) { | |
1610 | fprintf(stderr, "Not a route?\n"); | |
1611 | return -1; | |
1612 | } | |
1613 | len -= NLMSG_LENGTH(sizeof(*r)); | |
1614 | if (len < 0) { | |
1615 | fprintf(stderr, "Wrong len %d\n", len); | |
1616 | return -1; | |
1617 | } | |
1618 | ||
aba5acdf SH |
1619 | parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len); |
1620 | ||
1621 | if (tb[RTA_PREFSRC]) { | |
1622 | tb[RTA_PREFSRC]->rta_type = RTA_SRC; | |
1623 | r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]); | |
1624 | } else if (!tb[RTA_SRC]) { | |
1625 | fprintf(stderr, "Failed to connect the route\n"); | |
1626 | return -1; | |
1627 | } | |
1628 | if (!odev && tb[RTA_OIF]) | |
1629 | tb[RTA_OIF]->rta_type = 0; | |
1630 | if (tb[RTA_GATEWAY]) | |
1631 | tb[RTA_GATEWAY]->rta_type = 0; | |
93ae2835 EB |
1632 | if (tb[RTA_VIA]) |
1633 | tb[RTA_VIA]->rta_type = 0; | |
aba5acdf SH |
1634 | if (!idev && tb[RTA_IIF]) |
1635 | tb[RTA_IIF]->rta_type = 0; | |
1636 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
1637 | req.n.nlmsg_type = RTM_GETROUTE; | |
1638 | ||
cd70f3f5 | 1639 | if (rtnl_talk(&rth, &req.n, 0, 0, &req.n) < 0) |
aba5acdf SH |
1640 | exit(2); |
1641 | } | |
1642 | ||
1643 | if (print_route(NULL, &req.n, (void*)stdout) < 0) { | |
1644 | fprintf(stderr, "An error :-)\n"); | |
1645 | exit(1); | |
1646 | } | |
1647 | ||
1648 | exit(0); | |
1649 | } | |
1650 | ||
d1f28cf1 SH |
1651 | static int restore_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n, |
1652 | void *arg) | |
f4ff11e3 DS |
1653 | { |
1654 | int ret; | |
1655 | ||
1656 | n->nlmsg_flags |= NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK; | |
1657 | ||
1658 | ll_init_map(&rth); | |
1659 | ||
cd70f3f5 | 1660 | ret = rtnl_talk(&rth, n, 0, 0, n); |
f4ff11e3 DS |
1661 | if ((ret < 0) && (errno == EEXIST)) |
1662 | ret = 0; | |
1663 | ||
1664 | return ret; | |
1665 | } | |
1666 | ||
76c61b34 PE |
1667 | static int route_dump_check_magic(void) |
1668 | { | |
1669 | int ret; | |
1670 | __u32 magic = 0; | |
1671 | ||
1672 | if (isatty(STDIN_FILENO)) { | |
1673 | fprintf(stderr, "Can't restore route dump from a terminal\n"); | |
1674 | return -1; | |
1675 | } | |
1676 | ||
1677 | ret = fread(&magic, sizeof(magic), 1, stdin); | |
1678 | if (magic != route_dump_magic) { | |
1679 | fprintf(stderr, "Magic mismatch (%d elems, %x magic)\n", ret, magic); | |
1680 | return -1; | |
1681 | } | |
1682 | ||
1683 | return 0; | |
1684 | } | |
1685 | ||
d1f28cf1 | 1686 | static int iproute_restore(void) |
f4ff11e3 | 1687 | { |
76c61b34 PE |
1688 | if (route_dump_check_magic()) |
1689 | exit(-1); | |
1690 | ||
f4ff11e3 DS |
1691 | exit(rtnl_from_file(stdin, &restore_handler, NULL)); |
1692 | } | |
1693 | ||
93b79863 PE |
1694 | static int show_handler(const struct sockaddr_nl *nl, struct nlmsghdr *n, void *arg) |
1695 | { | |
1696 | print_route(nl, n, stdout); | |
1697 | return 0; | |
1698 | } | |
1699 | ||
1700 | static int iproute_showdump(void) | |
1701 | { | |
1702 | if (route_dump_check_magic()) | |
1703 | exit(-1); | |
1704 | ||
1705 | exit(rtnl_from_file(stdin, &show_handler, NULL)); | |
1706 | } | |
1707 | ||
093b7646 | 1708 | void iproute_reset_filter(int ifindex) |
aba5acdf SH |
1709 | { |
1710 | memset(&filter, 0, sizeof(filter)); | |
1711 | filter.mdst.bitlen = -1; | |
1712 | filter.msrc.bitlen = -1; | |
093b7646 | 1713 | filter.oif = ifindex; |
1714 | if (filter.oif > 0) | |
1715 | filter.oifmask = -1; | |
aba5acdf SH |
1716 | } |
1717 | ||
1718 | int do_iproute(int argc, char **argv) | |
1719 | { | |
1720 | if (argc < 1) | |
f4ff11e3 | 1721 | return iproute_list_flush_or_save(0, NULL, IPROUTE_LIST); |
ae665a52 | 1722 | |
aba5acdf SH |
1723 | if (matches(*argv, "add") == 0) |
1724 | return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL, | |
1725 | argc-1, argv+1); | |
1726 | if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0) | |
1727 | return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE, | |
1728 | argc-1, argv+1); | |
1729 | if (matches(*argv, "replace") == 0) | |
1730 | return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE, | |
1731 | argc-1, argv+1); | |
1732 | if (matches(*argv, "prepend") == 0) | |
1733 | return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE, | |
1734 | argc-1, argv+1); | |
1735 | if (matches(*argv, "append") == 0) | |
1736 | return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND, | |
1737 | argc-1, argv+1); | |
1738 | if (matches(*argv, "test") == 0) | |
1739 | return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL, | |
1740 | argc-1, argv+1); | |
1741 | if (matches(*argv, "delete") == 0) | |
1742 | return iproute_modify(RTM_DELROUTE, 0, | |
1743 | argc-1, argv+1); | |
1744 | if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0 | |
1745 | || matches(*argv, "lst") == 0) | |
f4ff11e3 | 1746 | return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_LIST); |
aba5acdf SH |
1747 | if (matches(*argv, "get") == 0) |
1748 | return iproute_get(argc-1, argv+1); | |
1749 | if (matches(*argv, "flush") == 0) | |
f4ff11e3 DS |
1750 | return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_FLUSH); |
1751 | if (matches(*argv, "save") == 0) | |
1752 | return iproute_list_flush_or_save(argc-1, argv+1, IPROUTE_SAVE); | |
1753 | if (matches(*argv, "restore") == 0) | |
1754 | return iproute_restore(); | |
93b79863 PE |
1755 | if (matches(*argv, "showdump") == 0) |
1756 | return iproute_showdump(); | |
aba5acdf SH |
1757 | if (matches(*argv, "help") == 0) |
1758 | usage(); | |
1759 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv); | |
1760 | exit(-1); | |
1761 | } | |
1762 |