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aba5acdf SH |
1 | /* |
2 | * iplink.c "ip link". | |
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 | * | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
16 | #include <syslog.h> | |
17 | #include <fcntl.h> | |
1d934839 | 18 | #include <dlfcn.h> |
aba5acdf SH |
19 | #include <errno.h> |
20 | #include <sys/socket.h> | |
21 | #include <linux/if.h> | |
22 | #include <linux/if_packet.h> | |
23 | #include <linux/if_ether.h> | |
24 | #include <linux/sockios.h> | |
25 | #include <netinet/in.h> | |
26 | #include <arpa/inet.h> | |
27 | #include <string.h> | |
28 | #include <sys/ioctl.h> | |
29 | #include <linux/sockios.h> | |
fbea6115 | 30 | #include <stdbool.h> |
aba5acdf SH |
31 | |
32 | #include "rt_names.h" | |
33 | #include "utils.h" | |
34 | #include "ip_common.h" | |
c7272ca7 | 35 | #include "xdp.h" |
c3087c10 | 36 | #include "namespace.h" |
aba5acdf | 37 | |
1d934839 | 38 | #define IPLINK_IOCTL_COMPAT 1 |
5e3bb534 | 39 | #ifndef LIBDIR |
5c434a9e | 40 | #define LIBDIR "/usr/lib" |
b514b358 | 41 | #endif |
aba5acdf SH |
42 | |
43 | static void usage(void) __attribute__((noreturn)); | |
750a405a | 44 | static int iplink_have_newlink(void); |
aba5acdf SH |
45 | |
46 | void iplink_usage(void) | |
47 | { | |
750a405a | 48 | if (iplink_have_newlink()) { |
6773bcc2 SH |
49 | fprintf(stderr, |
50 | "Usage: ip link add [link DEV] [ name ] NAME\n" | |
51 | " [ txqueuelen PACKETS ]\n" | |
52 | " [ address LLADDR ]\n" | |
53 | " [ broadcast LLADDR ]\n" | |
54 | " [ mtu MTU ] [index IDX ]\n" | |
55 | " [ numtxqueues QUEUE_COUNT ]\n" | |
56 | " [ numrxqueues QUEUE_COUNT ]\n" | |
57 | " type TYPE [ ARGS ]\n" | |
c7272ca7 | 58 | "\n" |
6773bcc2 SH |
59 | " ip link delete { DEVICE | dev DEVICE | group DEVGROUP } type TYPE [ ARGS ]\n" |
60 | "\n" | |
61 | " ip link set { DEVICE | dev DEVICE | group DEVGROUP }\n" | |
62 | " [ { up | down } ]\n" | |
63 | " [ type TYPE ARGS ]\n"); | |
750a405a SH |
64 | } else |
65 | fprintf(stderr, "Usage: ip link set DEVICE [ { up | down } ]\n"); | |
66 | ||
6773bcc2 SH |
67 | fprintf(stderr, |
68 | " [ arp { on | off } ]\n" | |
69 | " [ dynamic { on | off } ]\n" | |
70 | " [ multicast { on | off } ]\n" | |
71 | " [ allmulticast { on | off } ]\n" | |
72 | " [ promisc { on | off } ]\n" | |
73 | " [ trailers { on | off } ]\n" | |
74 | " [ txqueuelen PACKETS ]\n" | |
75 | " [ name NEWNAME ]\n" | |
76 | " [ address LLADDR ]\n" | |
77 | " [ broadcast LLADDR ]\n" | |
78 | " [ mtu MTU ]\n" | |
79 | " [ netns { PID | NAME } ]\n" | |
80 | " [ link-netnsid ID ]\n" | |
81 | " [ alias NAME ]\n" | |
82 | " [ vf NUM [ mac LLADDR ]\n" | |
83 | " [ vlan VLANID [ qos VLAN-QOS ] [ proto VLAN-PROTO ] ]\n" | |
6773bcc2 SH |
84 | " [ rate TXRATE ]\n" |
85 | " [ max_tx_rate TXRATE ]\n" | |
86 | " [ min_tx_rate TXRATE ]\n" | |
6773bcc2 SH |
87 | " [ spoofchk { on | off} ]\n" |
88 | " [ query_rss { on | off} ]\n" | |
89 | " [ state { auto | enable | disable} ] ]\n" | |
90 | " [ trust { on | off} ] ]\n" | |
c7272ca7 DB |
91 | " [ xdp { off |\n" |
92 | " object FILE [ section NAME ] [ verbose ] |\n" | |
93 | " pinned FILE } ]\n" | |
6773bcc2 SH |
94 | " [ master DEVICE ][ vrf NAME ]\n" |
95 | " [ nomaster ]\n" | |
96 | " [ addrgenmode { eui64 | none | stable_secret | random } ]\n" | |
97 | " [ protodown { on | off } ]\n" | |
c7272ca7 | 98 | "\n" |
6773bcc2 | 99 | " ip link show [ DEVICE | group GROUP ] [up] [master DEV] [vrf NAME] [type TYPE]\n"); |
750a405a | 100 | |
94f1a22a NA |
101 | fprintf(stderr, "\n ip link xstats type TYPE [ ARGS ]\n"); |
102 | ||
750a405a | 103 | if (iplink_have_newlink()) { |
6773bcc2 | 104 | fprintf(stderr, |
c7272ca7 DB |
105 | "\n" |
106 | " ip link help [ TYPE ]\n" | |
107 | "\n" | |
6773bcc2 | 108 | "TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | macvtap |\n" |
6bd1ea28 ZS |
109 | " bridge | bond | team | ipoib | ip6tnl | ipip | sit | vxlan |\n" |
110 | " gre | gretap | ip6gre | ip6gretap | vti | nlmon | team_slave |\n" | |
6773bcc2 | 111 | " bond_slave | ipvlan | geneve | bridge_slave | vrf | macsec }\n"); |
750a405a | 112 | } |
aba5acdf SH |
113 | exit(-1); |
114 | } | |
115 | ||
116 | static void usage(void) | |
117 | { | |
118 | iplink_usage(); | |
119 | } | |
120 | ||
14645ec2 | 121 | static int on_off(const char *msg, const char *realval) |
aba5acdf | 122 | { |
6c5ffb9a SH |
123 | fprintf(stderr, |
124 | "Error: argument of \"%s\" must be \"on\" or \"off\", not \"%s\"\n", | |
125 | msg, realval); | |
aba5acdf SH |
126 | return -1; |
127 | } | |
128 | ||
1d934839 PM |
129 | static void *BODY; /* cached dlopen(NULL) handle */ |
130 | static struct link_util *linkutil_list; | |
131 | ||
22a84711 | 132 | struct link_util *get_link_kind(const char *id) |
1d934839 PM |
133 | { |
134 | void *dlh; | |
135 | char buf[256]; | |
136 | struct link_util *l; | |
137 | ||
138 | for (l = linkutil_list; l; l = l->next) | |
22a84711 | 139 | if (strcmp(l->id, id) == 0) |
1d934839 PM |
140 | return l; |
141 | ||
5e3bb534 | 142 | snprintf(buf, sizeof(buf), LIBDIR "/ip/link_%s.so", id); |
1d934839 PM |
143 | dlh = dlopen(buf, RTLD_LAZY); |
144 | if (dlh == NULL) { | |
145 | /* look in current binary, only open once */ | |
146 | dlh = BODY; | |
147 | if (dlh == NULL) { | |
148 | dlh = BODY = dlopen(NULL, RTLD_LAZY); | |
149 | if (dlh == NULL) | |
150 | return NULL; | |
151 | } | |
152 | } | |
153 | ||
22a84711 | 154 | snprintf(buf, sizeof(buf), "%s_link_util", id); |
1d934839 PM |
155 | l = dlsym(dlh, buf); |
156 | if (l == NULL) | |
157 | return NULL; | |
158 | ||
159 | l->next = linkutil_list; | |
160 | linkutil_list = l; | |
161 | return l; | |
162 | } | |
163 | ||
d1f28cf1 | 164 | static int get_link_mode(const char *mode) |
82499282 | 165 | { |
4ccfb44d | 166 | if (strcasecmp(mode, "default") == 0) |
82499282 | 167 | return IF_LINK_MODE_DEFAULT; |
4ccfb44d | 168 | if (strcasecmp(mode, "dormant") == 0) |
82499282 SH |
169 | return IF_LINK_MODE_DORMANT; |
170 | return -1; | |
171 | } | |
172 | ||
ff7c2084 JP |
173 | static int get_addr_gen_mode(const char *mode) |
174 | { | |
175 | if (strcasecmp(mode, "eui64") == 0) | |
176 | return IN6_ADDR_GEN_MODE_EUI64; | |
177 | if (strcasecmp(mode, "none") == 0) | |
178 | return IN6_ADDR_GEN_MODE_NONE; | |
8e098dd8 BM |
179 | if (strcasecmp(mode, "stable_secret") == 0) |
180 | return IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
8e12bc0a BM |
181 | if (strcasecmp(mode, "random") == 0) |
182 | return IN6_ADDR_GEN_MODE_RANDOM; | |
ff7c2084 JP |
183 | return -1; |
184 | } | |
185 | ||
1d934839 PM |
186 | #if IPLINK_IOCTL_COMPAT |
187 | static int have_rtnl_newlink = -1; | |
188 | ||
189 | static int accept_msg(const struct sockaddr_nl *who, | |
0628cddd | 190 | struct rtnl_ctrl_data *ctrl, |
1d934839 PM |
191 | struct nlmsghdr *n, void *arg) |
192 | { | |
193 | struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(n); | |
194 | ||
66e529f5 PM |
195 | if (n->nlmsg_type == NLMSG_ERROR && |
196 | (err->error == -EOPNOTSUPP || err->error == -EINVAL)) | |
1d934839 PM |
197 | have_rtnl_newlink = 0; |
198 | else | |
199 | have_rtnl_newlink = 1; | |
200 | return -1; | |
201 | } | |
202 | ||
203 | static int iplink_have_newlink(void) | |
204 | { | |
205 | struct { | |
206 | struct nlmsghdr n; | |
207 | struct ifinfomsg i; | |
208 | char buf[1024]; | |
d17b136f PS |
209 | } req = { |
210 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)), | |
211 | .n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK, | |
212 | .n.nlmsg_type = RTM_NEWLINK, | |
213 | .i.ifi_family = AF_UNSPEC, | |
214 | }; | |
1d934839 PM |
215 | |
216 | if (have_rtnl_newlink < 0) { | |
d2468da0 SH |
217 | if (rtnl_send(&rth, &req.n, req.n.nlmsg_len) < 0) { |
218 | perror("request send failed"); | |
219 | exit(1); | |
220 | } | |
1d934839 PM |
221 | rtnl_listen(&rth, accept_msg, NULL); |
222 | } | |
223 | return have_rtnl_newlink; | |
224 | } | |
225 | #else /* IPLINK_IOCTL_COMPAT */ | |
226 | static int iplink_have_newlink(void) | |
227 | { | |
228 | return 1; | |
229 | } | |
230 | #endif /* ! IPLINK_IOCTL_COMPAT */ | |
231 | ||
8fe58d58 PS |
232 | static int nl_get_ll_addr_len(unsigned int dev_index) |
233 | { | |
234 | int len; | |
235 | struct iplink_req req = { | |
236 | .n = { | |
237 | .nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)), | |
238 | .nlmsg_type = RTM_GETLINK, | |
239 | .nlmsg_flags = NLM_F_REQUEST | |
240 | }, | |
241 | .i = { | |
242 | .ifi_family = preferred_family, | |
243 | .ifi_index = dev_index, | |
244 | } | |
245 | }; | |
246 | struct rtattr *tb[IFLA_MAX+1]; | |
247 | ||
248 | if (rtnl_talk(&rth, &req.n, &req.n, sizeof(req)) < 0) | |
249 | return -1; | |
250 | ||
251 | len = req.n.nlmsg_len - NLMSG_LENGTH(sizeof(req.i)); | |
252 | if (len < 0) | |
253 | return -1; | |
254 | ||
255 | parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(&req.i), len, NLA_F_NESTED); | |
256 | if (!tb[IFLA_ADDRESS]) | |
257 | return -1; | |
258 | ||
259 | return RTA_PAYLOAD(tb[IFLA_ADDRESS]); | |
260 | } | |
261 | ||
56e9f0ab MS |
262 | static void iplink_parse_vf_vlan_info(int vf, int *argcp, char ***argvp, |
263 | struct ifla_vf_vlan_info *ivvip) | |
264 | { | |
265 | int argc = *argcp; | |
266 | char **argv = *argvp; | |
267 | ||
268 | NEXT_ARG(); | |
269 | if (get_unsigned(&ivvip->vlan, *argv, 0)) | |
270 | invarg("Invalid \"vlan\" value\n", *argv); | |
271 | ||
272 | ivvip->vf = vf; | |
273 | ivvip->qos = 0; | |
274 | ivvip->vlan_proto = htons(ETH_P_8021Q); | |
275 | if (NEXT_ARG_OK()) { | |
276 | NEXT_ARG(); | |
277 | if (matches(*argv, "qos") == 0) { | |
278 | NEXT_ARG(); | |
279 | if (get_unsigned(&ivvip->qos, *argv, 0)) | |
280 | invarg("Invalid \"qos\" value\n", *argv); | |
281 | } else { | |
282 | /* rewind arg */ | |
283 | PREV_ARG(); | |
284 | } | |
285 | } | |
286 | if (NEXT_ARG_OK()) { | |
287 | NEXT_ARG(); | |
288 | if (matches(*argv, "proto") == 0) { | |
289 | NEXT_ARG(); | |
290 | if (ll_proto_a2n(&ivvip->vlan_proto, *argv)) | |
291 | invarg("protocol is invalid\n", *argv); | |
292 | if (ivvip->vlan_proto != htons(ETH_P_8021AD) && | |
293 | ivvip->vlan_proto != htons(ETH_P_8021Q)) { | |
294 | SPRINT_BUF(b1); | |
295 | SPRINT_BUF(b2); | |
296 | char msg[64 + sizeof(b1) + sizeof(b2)]; | |
297 | ||
6773bcc2 | 298 | sprintf(msg, "Invalid \"vlan protocol\" value - supported %s, %s\n", |
56e9f0ab MS |
299 | ll_proto_n2a(htons(ETH_P_8021Q), |
300 | b1, sizeof(b1)), | |
301 | ll_proto_n2a(htons(ETH_P_8021AD), | |
302 | b2, sizeof(b2))); | |
303 | invarg(msg, *argv); | |
304 | } | |
305 | } else { | |
306 | /* rewind arg */ | |
307 | PREV_ARG(); | |
308 | } | |
309 | } | |
310 | ||
311 | *argcp = argc; | |
312 | *argvp = argv; | |
313 | } | |
314 | ||
d1f28cf1 | 315 | static int iplink_parse_vf(int vf, int *argcp, char ***argvp, |
f89a2a05 | 316 | struct iplink_req *req, int dev_index) |
3fd86630 | 317 | { |
f89a2a05 SC |
318 | char new_rate_api = 0, count = 0, override_legacy_rate = 0; |
319 | struct ifla_vf_rate tivt; | |
3fd86630 CW |
320 | int len, argc = *argcp; |
321 | char **argv = *argvp; | |
322 | struct rtattr *vfinfo; | |
1598b9ef | 323 | |
f89a2a05 SC |
324 | tivt.min_tx_rate = -1; |
325 | tivt.max_tx_rate = -1; | |
326 | ||
1598b9ef | 327 | vfinfo = addattr_nest(&req->n, sizeof(*req), IFLA_VF_INFO); |
3fd86630 | 328 | |
f89a2a05 SC |
329 | while (NEXT_ARG_OK()) { |
330 | NEXT_ARG(); | |
331 | count++; | |
332 | if (!matches(*argv, "max_tx_rate")) { | |
333 | /* new API in use */ | |
334 | new_rate_api = 1; | |
335 | /* override legacy rate */ | |
336 | override_legacy_rate = 1; | |
337 | } else if (!matches(*argv, "min_tx_rate")) { | |
338 | /* new API in use */ | |
339 | new_rate_api = 1; | |
340 | } | |
341 | } | |
342 | ||
343 | while (count--) { | |
344 | /* rewind arg */ | |
345 | PREV_ARG(); | |
346 | } | |
347 | ||
3fd86630 CW |
348 | while (NEXT_ARG_OK()) { |
349 | NEXT_ARG(); | |
1598b9ef | 350 | if (matches(*argv, "mac") == 0) { |
a89193a7 | 351 | struct ifla_vf_mac ivm = { 0 }; |
8fe58d58 | 352 | int halen = nl_get_ll_addr_len(dev_index); |
6c5ffb9a | 353 | |
3fd86630 | 354 | NEXT_ARG(); |
1598b9ef SH |
355 | ivm.vf = vf; |
356 | len = ll_addr_a2n((char *)ivm.mac, 32, *argv); | |
357 | if (len < 0) | |
358 | return -1; | |
8fe58d58 PS |
359 | if (halen > 0 && len != halen) { |
360 | fprintf(stderr, | |
361 | "Invalid address length %d - must be %d bytes\n", | |
362 | len, halen); | |
363 | return -1; | |
364 | } | |
ef0a738c SH |
365 | addattr_l(&req->n, sizeof(*req), IFLA_VF_MAC, |
366 | &ivm, sizeof(ivm)); | |
3fd86630 | 367 | } else if (matches(*argv, "vlan") == 0) { |
56e9f0ab | 368 | struct ifla_vf_vlan_info ivvi; |
6c5ffb9a | 369 | |
56e9f0ab MS |
370 | iplink_parse_vf_vlan_info(vf, &argc, &argv, &ivvi); |
371 | /* support the old interface in case of older kernel*/ | |
372 | if (ivvi.vlan_proto == htons(ETH_P_8021Q)) { | |
373 | struct ifla_vf_vlan ivv; | |
374 | ||
375 | ivv.vf = ivvi.vf; | |
376 | ivv.vlan = ivvi.vlan; | |
377 | ivv.qos = ivvi.qos; | |
378 | addattr_l(&req->n, sizeof(*req), | |
379 | IFLA_VF_VLAN, &ivv, sizeof(ivv)); | |
380 | } else { | |
381 | struct rtattr *vfvlanlist; | |
382 | ||
383 | vfvlanlist = addattr_nest(&req->n, sizeof(*req), | |
384 | IFLA_VF_VLAN_LIST); | |
385 | addattr_l(&req->n, sizeof(*req), | |
386 | IFLA_VF_VLAN_INFO, &ivvi, | |
387 | sizeof(ivvi)); | |
388 | ||
389 | while (NEXT_ARG_OK()) { | |
3fd86630 | 390 | NEXT_ARG(); |
56e9f0ab MS |
391 | if (matches(*argv, "vlan") != 0) { |
392 | PREV_ARG(); | |
393 | break; | |
394 | } | |
395 | iplink_parse_vf_vlan_info(vf, &argc, | |
396 | &argv, &ivvi); | |
397 | addattr_l(&req->n, sizeof(*req), | |
398 | IFLA_VF_VLAN_INFO, &ivvi, | |
399 | sizeof(ivvi)); | |
3fd86630 | 400 | } |
56e9f0ab | 401 | addattr_nest_end(&req->n, vfvlanlist); |
3fd86630 | 402 | } |
3fd86630 | 403 | } else if (matches(*argv, "rate") == 0) { |
1598b9ef | 404 | struct ifla_vf_tx_rate ivt; |
6c5ffb9a | 405 | |
3fd86630 | 406 | NEXT_ARG(); |
6c5ffb9a | 407 | if (get_unsigned(&ivt.rate, *argv, 0)) |
1598b9ef | 408 | invarg("Invalid \"rate\" value\n", *argv); |
6c5ffb9a | 409 | |
1598b9ef | 410 | ivt.vf = vf; |
f89a2a05 SC |
411 | if (!new_rate_api) |
412 | addattr_l(&req->n, sizeof(*req), | |
413 | IFLA_VF_TX_RATE, &ivt, sizeof(ivt)); | |
414 | else if (!override_legacy_rate) | |
415 | tivt.max_tx_rate = ivt.rate; | |
416 | ||
417 | } else if (matches(*argv, "max_tx_rate") == 0) { | |
418 | NEXT_ARG(); | |
419 | if (get_unsigned(&tivt.max_tx_rate, *argv, 0)) | |
420 | invarg("Invalid \"max tx rate\" value\n", | |
421 | *argv); | |
422 | tivt.vf = vf; | |
423 | ||
424 | } else if (matches(*argv, "min_tx_rate") == 0) { | |
425 | NEXT_ARG(); | |
426 | if (get_unsigned(&tivt.min_tx_rate, *argv, 0)) | |
427 | invarg("Invalid \"min tx rate\" value\n", | |
428 | *argv); | |
429 | tivt.vf = vf; | |
af89576d | 430 | |
7b8179c7 GR |
431 | } else if (matches(*argv, "spoofchk") == 0) { |
432 | struct ifla_vf_spoofchk ivs; | |
6c5ffb9a | 433 | |
7b8179c7 GR |
434 | NEXT_ARG(); |
435 | if (matches(*argv, "on") == 0) | |
436 | ivs.setting = 1; | |
437 | else if (matches(*argv, "off") == 0) | |
438 | ivs.setting = 0; | |
439 | else | |
ff1e35ed | 440 | return on_off("spoofchk", *argv); |
7b8179c7 | 441 | ivs.vf = vf; |
ef0a738c SH |
442 | addattr_l(&req->n, sizeof(*req), IFLA_VF_SPOOFCHK, |
443 | &ivs, sizeof(ivs)); | |
7b8179c7 | 444 | |
6c55c8c4 VZ |
445 | } else if (matches(*argv, "query_rss") == 0) { |
446 | struct ifla_vf_rss_query_en ivs; | |
6c5ffb9a | 447 | |
6c55c8c4 VZ |
448 | NEXT_ARG(); |
449 | if (matches(*argv, "on") == 0) | |
450 | ivs.setting = 1; | |
451 | else if (matches(*argv, "off") == 0) | |
452 | ivs.setting = 0; | |
453 | else | |
ff1e35ed | 454 | return on_off("query_rss", *argv); |
6c55c8c4 | 455 | ivs.vf = vf; |
ef0a738c SH |
456 | addattr_l(&req->n, sizeof(*req), IFLA_VF_RSS_QUERY_EN, |
457 | &ivs, sizeof(ivs)); | |
6c55c8c4 | 458 | |
b6d77d9e HS |
459 | } else if (matches(*argv, "trust") == 0) { |
460 | struct ifla_vf_trust ivt; | |
56f5daac | 461 | |
b6d77d9e HS |
462 | NEXT_ARG(); |
463 | if (matches(*argv, "on") == 0) | |
464 | ivt.setting = 1; | |
465 | else if (matches(*argv, "off") == 0) | |
466 | ivt.setting = 0; | |
467 | else | |
468 | invarg("Invalid \"trust\" value\n", *argv); | |
469 | ivt.vf = vf; | |
ef0a738c SH |
470 | addattr_l(&req->n, sizeof(*req), IFLA_VF_TRUST, |
471 | &ivt, sizeof(ivt)); | |
b6d77d9e | 472 | |
07fa9c15 RE |
473 | } else if (matches(*argv, "state") == 0) { |
474 | struct ifla_vf_link_state ivl; | |
6c5ffb9a | 475 | |
07fa9c15 RE |
476 | NEXT_ARG(); |
477 | if (matches(*argv, "auto") == 0) | |
478 | ivl.link_state = IFLA_VF_LINK_STATE_AUTO; | |
479 | else if (matches(*argv, "enable") == 0) | |
480 | ivl.link_state = IFLA_VF_LINK_STATE_ENABLE; | |
481 | else if (matches(*argv, "disable") == 0) | |
482 | ivl.link_state = IFLA_VF_LINK_STATE_DISABLE; | |
483 | else | |
484 | invarg("Invalid \"state\" value\n", *argv); | |
485 | ivl.vf = vf; | |
ef0a738c SH |
486 | addattr_l(&req->n, sizeof(*req), IFLA_VF_LINK_STATE, |
487 | &ivl, sizeof(ivl)); | |
d91fb3f4 EC |
488 | } else if (matches(*argv, "node_guid") == 0) { |
489 | struct ifla_vf_guid ivg; | |
490 | ||
491 | NEXT_ARG(); | |
492 | ivg.vf = vf; | |
493 | if (get_guid(&ivg.guid, *argv)) { | |
494 | invarg("Invalid GUID format\n", *argv); | |
495 | return -1; | |
496 | } | |
ef0a738c SH |
497 | addattr_l(&req->n, sizeof(*req), IFLA_VF_IB_NODE_GUID, |
498 | &ivg, sizeof(ivg)); | |
d91fb3f4 EC |
499 | } else if (matches(*argv, "port_guid") == 0) { |
500 | struct ifla_vf_guid ivg; | |
501 | ||
502 | NEXT_ARG(); | |
503 | ivg.vf = vf; | |
504 | if (get_guid(&ivg.guid, *argv)) { | |
505 | invarg("Invalid GUID format\n", *argv); | |
506 | return -1; | |
507 | } | |
ef0a738c SH |
508 | addattr_l(&req->n, sizeof(*req), IFLA_VF_IB_PORT_GUID, |
509 | &ivg, sizeof(ivg)); | |
3fd86630 CW |
510 | } else { |
511 | /* rewind arg */ | |
512 | PREV_ARG(); | |
513 | break; | |
514 | } | |
515 | } | |
516 | ||
f89a2a05 SC |
517 | if (new_rate_api) { |
518 | int tmin, tmax; | |
9a02651a | 519 | |
f89a2a05 SC |
520 | if (tivt.min_tx_rate == -1 || tivt.max_tx_rate == -1) { |
521 | ipaddr_get_vf_rate(tivt.vf, &tmin, &tmax, dev_index); | |
522 | if (tivt.min_tx_rate == -1) | |
523 | tivt.min_tx_rate = tmin; | |
524 | if (tivt.max_tx_rate == -1) | |
525 | tivt.max_tx_rate = tmax; | |
526 | } | |
527 | addattr_l(&req->n, sizeof(*req), IFLA_VF_RATE, &tivt, | |
528 | sizeof(tivt)); | |
529 | } | |
530 | ||
3fd86630 CW |
531 | if (argc == *argcp) |
532 | incomplete_command(); | |
533 | ||
1598b9ef | 534 | addattr_nest_end(&req->n, vfinfo); |
3fd86630 CW |
535 | |
536 | *argcp = argc; | |
537 | *argvp = argv; | |
1598b9ef | 538 | return 0; |
3fd86630 CW |
539 | } |
540 | ||
909dfe2c | 541 | int iplink_parse(int argc, char **argv, struct iplink_req *req, |
6c5ffb9a SH |
542 | char **name, char **type, char **link, char **dev, |
543 | int *group, int *index) | |
1d934839 | 544 | { |
909dfe2c PE |
545 | int ret, len; |
546 | char abuf[32]; | |
1d934839 PM |
547 | int qlen = -1; |
548 | int mtu = -1; | |
e2613dc8 | 549 | int netns = -1; |
ae7229d5 | 550 | int vf = -1; |
d992f3e6 JP |
551 | int numtxqueues = -1; |
552 | int numrxqueues = -1; | |
9a02651a | 553 | int dev_index = 0; |
ccdcbf35 | 554 | int link_netnsid = -1; |
8fe58d58 | 555 | int addr_len = 0; |
1d934839 | 556 | |
db02608b | 557 | *group = -1; |
909dfe2c | 558 | ret = argc; |
1d934839 PM |
559 | |
560 | while (argc > 0) { | |
561 | if (strcmp(*argv, "up") == 0) { | |
909dfe2c PE |
562 | req->i.ifi_change |= IFF_UP; |
563 | req->i.ifi_flags |= IFF_UP; | |
1d934839 | 564 | } else if (strcmp(*argv, "down") == 0) { |
909dfe2c PE |
565 | req->i.ifi_change |= IFF_UP; |
566 | req->i.ifi_flags &= ~IFF_UP; | |
1d934839 PM |
567 | } else if (strcmp(*argv, "name") == 0) { |
568 | NEXT_ARG(); | |
909dfe2c | 569 | *name = *argv; |
5e25cf77 PE |
570 | } else if (strcmp(*argv, "index") == 0) { |
571 | NEXT_ARG(); | |
572 | *index = atoi(*argv); | |
3c682146 WC |
573 | if (*index < 0) |
574 | invarg("Invalid \"index\" value", *argv); | |
1d934839 PM |
575 | } else if (matches(*argv, "link") == 0) { |
576 | NEXT_ARG(); | |
909dfe2c | 577 | *link = *argv; |
1d934839 PM |
578 | } else if (matches(*argv, "address") == 0) { |
579 | NEXT_ARG(); | |
8fe58d58 | 580 | addr_len = ll_addr_a2n(abuf, sizeof(abuf), *argv); |
0aae2346 | 581 | if (addr_len < 0) |
cb2eb999 | 582 | return -1; |
8fe58d58 | 583 | addattr_l(&req->n, sizeof(*req), IFLA_ADDRESS, abuf, addr_len); |
1d934839 | 584 | } else if (matches(*argv, "broadcast") == 0 || |
6c5ffb9a | 585 | strcmp(*argv, "brd") == 0) { |
1d934839 PM |
586 | NEXT_ARG(); |
587 | len = ll_addr_a2n(abuf, sizeof(abuf), *argv); | |
cb2eb999 AH |
588 | if (len < 0) |
589 | return -1; | |
909dfe2c | 590 | addattr_l(&req->n, sizeof(*req), IFLA_BROADCAST, abuf, len); |
1d934839 | 591 | } else if (matches(*argv, "txqueuelen") == 0 || |
6c5ffb9a SH |
592 | strcmp(*argv, "qlen") == 0 || |
593 | matches(*argv, "txqlen") == 0) { | |
1d934839 PM |
594 | NEXT_ARG(); |
595 | if (qlen != -1) | |
596 | duparg("txqueuelen", *argv); | |
597 | if (get_integer(&qlen, *argv, 0)) | |
598 | invarg("Invalid \"txqueuelen\" value\n", *argv); | |
909dfe2c | 599 | addattr_l(&req->n, sizeof(*req), IFLA_TXQLEN, &qlen, 4); |
1d934839 PM |
600 | } else if (strcmp(*argv, "mtu") == 0) { |
601 | NEXT_ARG(); | |
602 | if (mtu != -1) | |
603 | duparg("mtu", *argv); | |
604 | if (get_integer(&mtu, *argv, 0)) | |
605 | invarg("Invalid \"mtu\" value\n", *argv); | |
909dfe2c | 606 | addattr_l(&req->n, sizeof(*req), IFLA_MTU, &mtu, 4); |
c7272ca7 DB |
607 | } else if (strcmp(*argv, "xdp") == 0) { |
608 | NEXT_ARG(); | |
609 | if (xdp_parse(&argc, &argv, req)) | |
610 | exit(-1); | |
4b726cb1 SH |
611 | } else if (strcmp(*argv, "netns") == 0) { |
612 | NEXT_ARG(); | |
613 | if (netns != -1) | |
614 | duparg("netns", *argv); | |
6c5ffb9a SH |
615 | netns = netns_get_fd(*argv); |
616 | if (netns >= 0) | |
ef0a738c SH |
617 | addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_FD, |
618 | &netns, 4); | |
0dc34c77 | 619 | else if (get_integer(&netns, *argv, 0) == 0) |
ef0a738c SH |
620 | addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_PID, |
621 | &netns, 4); | |
0dc34c77 | 622 | else |
4b726cb1 | 623 | invarg("Invalid \"netns\" value\n", *argv); |
1d934839 PM |
624 | } else if (strcmp(*argv, "multicast") == 0) { |
625 | NEXT_ARG(); | |
909dfe2c | 626 | req->i.ifi_change |= IFF_MULTICAST; |
6c5ffb9a SH |
627 | |
628 | if (strcmp(*argv, "on") == 0) | |
909dfe2c | 629 | req->i.ifi_flags |= IFF_MULTICAST; |
6c5ffb9a | 630 | else if (strcmp(*argv, "off") == 0) |
909dfe2c | 631 | req->i.ifi_flags &= ~IFF_MULTICAST; |
6c5ffb9a | 632 | else |
14645ec2 | 633 | return on_off("multicast", *argv); |
1d934839 PM |
634 | } else if (strcmp(*argv, "allmulticast") == 0) { |
635 | NEXT_ARG(); | |
909dfe2c | 636 | req->i.ifi_change |= IFF_ALLMULTI; |
6c5ffb9a SH |
637 | |
638 | if (strcmp(*argv, "on") == 0) | |
909dfe2c | 639 | req->i.ifi_flags |= IFF_ALLMULTI; |
6c5ffb9a | 640 | else if (strcmp(*argv, "off") == 0) |
909dfe2c | 641 | req->i.ifi_flags &= ~IFF_ALLMULTI; |
6c5ffb9a | 642 | else |
14645ec2 | 643 | return on_off("allmulticast", *argv); |
1d934839 PM |
644 | } else if (strcmp(*argv, "promisc") == 0) { |
645 | NEXT_ARG(); | |
909dfe2c | 646 | req->i.ifi_change |= IFF_PROMISC; |
6c5ffb9a SH |
647 | |
648 | if (strcmp(*argv, "on") == 0) | |
909dfe2c | 649 | req->i.ifi_flags |= IFF_PROMISC; |
6c5ffb9a | 650 | else if (strcmp(*argv, "off") == 0) |
909dfe2c | 651 | req->i.ifi_flags &= ~IFF_PROMISC; |
6c5ffb9a | 652 | else |
14645ec2 | 653 | return on_off("promisc", *argv); |
1d934839 PM |
654 | } else if (strcmp(*argv, "trailers") == 0) { |
655 | NEXT_ARG(); | |
909dfe2c | 656 | req->i.ifi_change |= IFF_NOTRAILERS; |
6c5ffb9a SH |
657 | |
658 | if (strcmp(*argv, "off") == 0) | |
909dfe2c | 659 | req->i.ifi_flags |= IFF_NOTRAILERS; |
6c5ffb9a | 660 | else if (strcmp(*argv, "on") == 0) |
909dfe2c | 661 | req->i.ifi_flags &= ~IFF_NOTRAILERS; |
6c5ffb9a | 662 | else |
14645ec2 | 663 | return on_off("trailers", *argv); |
1d934839 PM |
664 | } else if (strcmp(*argv, "arp") == 0) { |
665 | NEXT_ARG(); | |
909dfe2c | 666 | req->i.ifi_change |= IFF_NOARP; |
6c5ffb9a SH |
667 | |
668 | if (strcmp(*argv, "on") == 0) | |
909dfe2c | 669 | req->i.ifi_flags &= ~IFF_NOARP; |
6c5ffb9a | 670 | else if (strcmp(*argv, "off") == 0) |
909dfe2c | 671 | req->i.ifi_flags |= IFF_NOARP; |
6c5ffb9a | 672 | else |
e543a6a8 | 673 | return on_off("arp", *argv); |
ae7229d5 | 674 | } else if (strcmp(*argv, "vf") == 0) { |
1598b9ef | 675 | struct rtattr *vflist; |
6c5ffb9a | 676 | |
ae7229d5 | 677 | NEXT_ARG(); |
6c5ffb9a | 678 | if (get_integer(&vf, *argv, 0)) |
ae7229d5 | 679 | invarg("Invalid \"vf\" value\n", *argv); |
6c5ffb9a | 680 | |
1598b9ef SH |
681 | vflist = addattr_nest(&req->n, sizeof(*req), |
682 | IFLA_VFINFO_LIST); | |
9a02651a SH |
683 | if (dev_index == 0) |
684 | missarg("dev"); | |
685 | ||
f89a2a05 | 686 | len = iplink_parse_vf(vf, &argc, &argv, req, dev_index); |
1598b9ef SH |
687 | if (len < 0) |
688 | return -1; | |
689 | addattr_nest_end(&req->n, vflist); | |
a1e191b9 JP |
690 | } else if (matches(*argv, "master") == 0) { |
691 | int ifindex; | |
6c5ffb9a | 692 | |
a1e191b9 JP |
693 | NEXT_ARG(); |
694 | ifindex = ll_name_to_index(*argv); | |
695 | if (!ifindex) | |
696 | invarg("Device does not exist\n", *argv); | |
697 | addattr_l(&req->n, sizeof(*req), IFLA_MASTER, | |
698 | &ifindex, 4); | |
104444c2 DA |
699 | } else if (strcmp(*argv, "vrf") == 0) { |
700 | int ifindex; | |
701 | ||
702 | NEXT_ARG(); | |
703 | ifindex = ll_name_to_index(*argv); | |
704 | if (!ifindex) | |
705 | invarg("Not a valid VRF name\n", *argv); | |
706 | if (!name_is_vrf(*argv)) | |
707 | invarg("Not a valid VRF name\n", *argv); | |
708 | addattr_l(&req->n, sizeof(*req), IFLA_MASTER, | |
709 | &ifindex, sizeof(ifindex)); | |
a1e191b9 JP |
710 | } else if (matches(*argv, "nomaster") == 0) { |
711 | int ifindex = 0; | |
6c5ffb9a | 712 | |
a1e191b9 JP |
713 | addattr_l(&req->n, sizeof(*req), IFLA_MASTER, |
714 | &ifindex, 4); | |
1d934839 PM |
715 | } else if (matches(*argv, "dynamic") == 0) { |
716 | NEXT_ARG(); | |
909dfe2c | 717 | req->i.ifi_change |= IFF_DYNAMIC; |
6c5ffb9a SH |
718 | |
719 | if (strcmp(*argv, "on") == 0) | |
909dfe2c | 720 | req->i.ifi_flags |= IFF_DYNAMIC; |
6c5ffb9a | 721 | else if (strcmp(*argv, "off") == 0) |
909dfe2c | 722 | req->i.ifi_flags &= ~IFF_DYNAMIC; |
6c5ffb9a | 723 | else |
14645ec2 | 724 | return on_off("dynamic", *argv); |
1d934839 PM |
725 | } else if (matches(*argv, "type") == 0) { |
726 | NEXT_ARG(); | |
909dfe2c | 727 | *type = *argv; |
1d934839 PM |
728 | argc--; argv++; |
729 | break; | |
ace9c961 SH |
730 | } else if (matches(*argv, "alias") == 0) { |
731 | NEXT_ARG(); | |
732 | addattr_l(&req->n, sizeof(*req), IFLA_IFALIAS, | |
733 | *argv, strlen(*argv)); | |
734 | argc--; argv++; | |
735 | break; | |
db02608b VD |
736 | } else if (strcmp(*argv, "group") == 0) { |
737 | NEXT_ARG(); | |
738 | if (*group != -1) | |
739 | duparg("group", *argv); | |
740 | if (rtnl_group_a2n(group, *argv)) | |
741 | invarg("Invalid \"group\" value\n", *argv); | |
82499282 SH |
742 | } else if (strcmp(*argv, "mode") == 0) { |
743 | int mode; | |
6c5ffb9a | 744 | |
82499282 | 745 | NEXT_ARG(); |
4ccfb44d | 746 | mode = get_link_mode(*argv); |
82499282 SH |
747 | if (mode < 0) |
748 | invarg("Invalid link mode\n", *argv); | |
749 | addattr8(&req->n, sizeof(*req), IFLA_LINKMODE, mode); | |
4f2fdd44 SH |
750 | } else if (strcmp(*argv, "state") == 0) { |
751 | int state; | |
6c5ffb9a | 752 | |
4f2fdd44 SH |
753 | NEXT_ARG(); |
754 | state = get_operstate(*argv); | |
755 | if (state < 0) | |
756 | invarg("Invalid operstate\n", *argv); | |
757 | ||
758 | addattr8(&req->n, sizeof(*req), IFLA_OPERSTATE, state); | |
d992f3e6 JP |
759 | } else if (matches(*argv, "numtxqueues") == 0) { |
760 | NEXT_ARG(); | |
761 | if (numtxqueues != -1) | |
762 | duparg("numtxqueues", *argv); | |
763 | if (get_integer(&numtxqueues, *argv, 0)) | |
764 | invarg("Invalid \"numtxqueues\" value\n", *argv); | |
765 | addattr_l(&req->n, sizeof(*req), IFLA_NUM_TX_QUEUES, | |
766 | &numtxqueues, 4); | |
767 | } else if (matches(*argv, "numrxqueues") == 0) { | |
768 | NEXT_ARG(); | |
769 | if (numrxqueues != -1) | |
770 | duparg("numrxqueues", *argv); | |
771 | if (get_integer(&numrxqueues, *argv, 0)) | |
772 | invarg("Invalid \"numrxqueues\" value\n", *argv); | |
773 | addattr_l(&req->n, sizeof(*req), IFLA_NUM_RX_QUEUES, | |
774 | &numrxqueues, 4); | |
ff7c2084 JP |
775 | } else if (matches(*argv, "addrgenmode") == 0) { |
776 | struct rtattr *afs, *afs6; | |
777 | int mode; | |
6c5ffb9a | 778 | |
ff7c2084 JP |
779 | NEXT_ARG(); |
780 | mode = get_addr_gen_mode(*argv); | |
781 | if (mode < 0) | |
782 | invarg("Invalid address generation mode\n", *argv); | |
783 | afs = addattr_nest(&req->n, sizeof(*req), IFLA_AF_SPEC); | |
784 | afs6 = addattr_nest(&req->n, sizeof(*req), AF_INET6); | |
ef0a738c SH |
785 | addattr8(&req->n, sizeof(*req), |
786 | IFLA_INET6_ADDR_GEN_MODE, mode); | |
ff7c2084 JP |
787 | addattr_nest_end(&req->n, afs6); |
788 | addattr_nest_end(&req->n, afs); | |
ccdcbf35 ND |
789 | } else if (matches(*argv, "link-netnsid") == 0) { |
790 | NEXT_ARG(); | |
791 | if (link_netnsid != -1) | |
792 | duparg("link-netnsid", *argv); | |
793 | if (get_integer(&link_netnsid, *argv, 0)) | |
794 | invarg("Invalid \"link-netnsid\" value\n", *argv); | |
795 | addattr32(&req->n, sizeof(*req), IFLA_LINK_NETNSID, | |
796 | link_netnsid); | |
18864827 AK |
797 | } else if (strcmp(*argv, "protodown") == 0) { |
798 | unsigned int proto_down; | |
799 | ||
800 | NEXT_ARG(); | |
801 | if (strcmp(*argv, "on") == 0) | |
802 | proto_down = 1; | |
803 | else if (strcmp(*argv, "off") == 0) | |
804 | proto_down = 0; | |
805 | else | |
806 | return on_off("protodown", *argv); | |
807 | addattr8(&req->n, sizeof(*req), IFLA_PROTO_DOWN, | |
808 | proto_down); | |
1d934839 | 809 | } else { |
05325552 PM |
810 | if (matches(*argv, "help") == 0) |
811 | usage(); | |
940a96e6 PS |
812 | |
813 | if (strcmp(*argv, "dev") == 0) | |
814 | NEXT_ARG(); | |
909dfe2c | 815 | if (*dev) |
1d934839 | 816 | duparg2("dev", *argv); |
909dfe2c | 817 | *dev = *argv; |
f89a2a05 | 818 | dev_index = ll_name_to_index(*dev); |
1d934839 PM |
819 | } |
820 | argc--; argv++; | |
821 | } | |
822 | ||
8fe58d58 PS |
823 | if (dev_index && addr_len) { |
824 | int halen = nl_get_ll_addr_len(dev_index); | |
ef0a738c | 825 | |
8fe58d58 PS |
826 | if (halen >= 0 && halen != addr_len) { |
827 | fprintf(stderr, | |
ef0a738c SH |
828 | "Invalid address length %d - must be %d bytes\n", |
829 | addr_len, halen); | |
8fe58d58 PS |
830 | return -1; |
831 | } | |
832 | } | |
833 | ||
909dfe2c PE |
834 | return ret - argc; |
835 | } | |
836 | ||
837 | static int iplink_modify(int cmd, unsigned int flags, int argc, char **argv) | |
838 | { | |
839 | int len; | |
840 | char *dev = NULL; | |
841 | char *name = NULL; | |
842 | char *link = NULL; | |
843 | char *type = NULL; | |
3c682146 | 844 | int index = -1; |
db02608b | 845 | int group; |
909dfe2c | 846 | struct link_util *lu = NULL; |
d17b136f PS |
847 | struct iplink_req req = { |
848 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)), | |
849 | .n.nlmsg_flags = NLM_F_REQUEST | flags, | |
850 | .n.nlmsg_type = cmd, | |
851 | .i.ifi_family = preferred_family, | |
852 | }; | |
909dfe2c PE |
853 | int ret; |
854 | ||
ef0a738c SH |
855 | ret = iplink_parse(argc, argv, |
856 | &req, &name, &type, &link, &dev, &group, &index); | |
909dfe2c PE |
857 | if (ret < 0) |
858 | return ret; | |
859 | ||
860 | argc -= ret; | |
861 | argv += ret; | |
db02608b VD |
862 | |
863 | if (group != -1) { | |
864 | if (dev) | |
865 | addattr_l(&req.n, sizeof(req), IFLA_GROUP, | |
866 | &group, sizeof(group)); | |
867 | else { | |
868 | if (argc) { | |
6773bcc2 SH |
869 | fprintf(stderr, |
870 | "Garbage instead of arguments \"%s ...\". Try \"ip link help\".\n", | |
871 | *argv); | |
db02608b VD |
872 | return -1; |
873 | } | |
874 | if (flags & NLM_F_CREATE) { | |
56f5daac | 875 | fprintf(stderr, "group cannot be used when creating devices.\n"); |
db02608b VD |
876 | return -1; |
877 | } | |
878 | ||
879 | req.i.ifi_index = 0; | |
880 | addattr32(&req.n, sizeof(req), IFLA_GROUP, group); | |
c079e121 | 881 | if (rtnl_talk(&rth, &req.n, NULL, 0) < 0) |
f921f567 | 882 | return -2; |
db02608b VD |
883 | return 0; |
884 | } | |
885 | } | |
886 | ||
1d934839 PM |
887 | if (!(flags & NLM_F_CREATE)) { |
888 | if (!dev) { | |
56f5daac | 889 | fprintf(stderr, "Not enough information: \"dev\" argument is required.\n"); |
1d934839 PM |
890 | exit(-1); |
891 | } | |
3c682146 | 892 | if (cmd == RTM_NEWLINK && index != -1) { |
56f5daac | 893 | fprintf(stderr, "index can be used only when creating devices.\n"); |
3c682146 WC |
894 | exit(-1); |
895 | } | |
1d934839 PM |
896 | |
897 | req.i.ifi_index = ll_name_to_index(dev); | |
898 | if (req.i.ifi_index == 0) { | |
899 | fprintf(stderr, "Cannot find device \"%s\"\n", dev); | |
900 | return -1; | |
901 | } | |
902 | } else { | |
903 | /* Allow "ip link add dev" and "ip link add name" */ | |
904 | if (!name) | |
905 | name = dev; | |
906 | ||
907 | if (link) { | |
908 | int ifindex; | |
909 | ||
910 | ifindex = ll_name_to_index(link); | |
911 | if (ifindex == 0) { | |
912 | fprintf(stderr, "Cannot find device \"%s\"\n", | |
913 | link); | |
914 | return -1; | |
915 | } | |
916 | addattr_l(&req.n, sizeof(req), IFLA_LINK, &ifindex, 4); | |
917 | } | |
5e25cf77 | 918 | |
68ac9ab3 AW |
919 | if (index == -1) |
920 | req.i.ifi_index = 0; | |
921 | else | |
922 | req.i.ifi_index = index; | |
1d934839 PM |
923 | } |
924 | ||
925 | if (name) { | |
926 | len = strlen(name) + 1; | |
ca78b0e7 | 927 | if (len == 1) |
ef0a738c SH |
928 | invarg("\"\" is not a valid device identifier\n", |
929 | "name"); | |
1d934839 | 930 | if (len > IFNAMSIZ) |
ca78b0e7 | 931 | invarg("\"name\" too long\n", name); |
1d934839 PM |
932 | addattr_l(&req.n, sizeof(req), IFLA_IFNAME, name, len); |
933 | } | |
934 | ||
09fa3279 | 935 | if (type) { |
a1e2e5fc | 936 | struct rtattr *linkinfo; |
22a84711 | 937 | char *ulinep = strchr(type, '_'); |
620ddeda NA |
938 | int iflatype; |
939 | ||
a1e2e5fc | 940 | linkinfo = addattr_nest(&req.n, sizeof(req), IFLA_LINKINFO); |
09fa3279 SH |
941 | addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, type, |
942 | strlen(type)); | |
943 | ||
22a84711 HL |
944 | lu = get_link_kind(type); |
945 | if (ulinep && !strcmp(ulinep, "_slave")) | |
620ddeda | 946 | iflatype = IFLA_INFO_SLAVE_DATA; |
22a84711 | 947 | else |
620ddeda | 948 | iflatype = IFLA_INFO_DATA; |
09fa3279 | 949 | if (lu && argc) { |
ef0a738c SH |
950 | struct rtattr *data = addattr_nest(&req.n, |
951 | sizeof(req), iflatype); | |
09fa3279 SH |
952 | |
953 | if (lu->parse_opt && | |
954 | lu->parse_opt(lu, argc, argv, &req.n)) | |
955 | return -1; | |
956 | ||
a1e2e5fc | 957 | addattr_nest_end(&req.n, data); |
09fa3279 SH |
958 | } else if (argc) { |
959 | if (matches(*argv, "help") == 0) | |
960 | usage(); | |
6773bcc2 SH |
961 | fprintf(stderr, |
962 | "Garbage instead of arguments \"%s ...\". Try \"ip link help\".\n", | |
963 | *argv); | |
09fa3279 SH |
964 | return -1; |
965 | } | |
a1e2e5fc | 966 | addattr_nest_end(&req.n, linkinfo); |
09fa3279 | 967 | } else if (flags & NLM_F_CREATE) { |
56f5daac | 968 | fprintf(stderr, "Not enough information: \"type\" argument is required\n"); |
09fa3279 SH |
969 | return -1; |
970 | } | |
971 | ||
c079e121 | 972 | if (rtnl_talk(&rth, &req.n, NULL, 0) < 0) |
f921f567 | 973 | return -2; |
1d934839 PM |
974 | |
975 | return 0; | |
976 | } | |
977 | ||
50b9950d RP |
978 | int iplink_get(unsigned int flags, char *name, __u32 filt_mask) |
979 | { | |
980 | int len; | |
d17b136f PS |
981 | struct iplink_req req = { |
982 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)), | |
983 | .n.nlmsg_flags = NLM_F_REQUEST | flags, | |
984 | .n.nlmsg_type = RTM_GETLINK, | |
985 | .i.ifi_family = preferred_family, | |
986 | }; | |
c079e121 SH |
987 | struct { |
988 | struct nlmsghdr n; | |
989 | char buf[16384]; | |
990 | } answer; | |
50b9950d | 991 | |
50b9950d RP |
992 | if (name) { |
993 | len = strlen(name) + 1; | |
994 | if (len == 1) | |
995 | invarg("\"\" is not a valid device identifier\n", | |
996 | "name"); | |
997 | if (len > IFNAMSIZ) | |
998 | invarg("\"name\" too long\n", name); | |
999 | addattr_l(&req.n, sizeof(req), IFLA_IFNAME, name, len); | |
1000 | } | |
1001 | addattr32(&req.n, sizeof(req), IFLA_EXT_MASK, filt_mask); | |
1002 | ||
c079e121 | 1003 | if (rtnl_talk(&rth, &req.n, &answer.n, sizeof(answer)) < 0) |
50b9950d RP |
1004 | return -2; |
1005 | ||
5d295bb8 AG |
1006 | if (brief) |
1007 | print_linkinfo_brief(NULL, &answer.n, stdout); | |
1008 | else | |
1009 | print_linkinfo(NULL, &answer.n, stdout); | |
50b9950d RP |
1010 | |
1011 | return 0; | |
1012 | } | |
1013 | ||
1d934839 | 1014 | #if IPLINK_IOCTL_COMPAT |
aba5acdf SH |
1015 | static int get_ctl_fd(void) |
1016 | { | |
1017 | int s_errno; | |
1018 | int fd; | |
1019 | ||
1020 | fd = socket(PF_INET, SOCK_DGRAM, 0); | |
1021 | if (fd >= 0) | |
1022 | return fd; | |
1023 | s_errno = errno; | |
1024 | fd = socket(PF_PACKET, SOCK_DGRAM, 0); | |
1025 | if (fd >= 0) | |
1026 | return fd; | |
1027 | fd = socket(PF_INET6, SOCK_DGRAM, 0); | |
1028 | if (fd >= 0) | |
1029 | return fd; | |
1030 | errno = s_errno; | |
1031 | perror("Cannot create control socket"); | |
1032 | return -1; | |
1033 | } | |
1034 | ||
71058eb8 | 1035 | static int do_chflags(const char *dev, __u32 flags, __u32 mask) |
aba5acdf SH |
1036 | { |
1037 | struct ifreq ifr; | |
1038 | int fd; | |
1039 | int err; | |
1040 | ||
71058eb8 | 1041 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
aba5acdf SH |
1042 | fd = get_ctl_fd(); |
1043 | if (fd < 0) | |
1044 | return -1; | |
1045 | err = ioctl(fd, SIOCGIFFLAGS, &ifr); | |
1046 | if (err) { | |
1047 | perror("SIOCGIFFLAGS"); | |
1048 | close(fd); | |
1049 | return -1; | |
1050 | } | |
1051 | if ((ifr.ifr_flags^flags)&mask) { | |
1052 | ifr.ifr_flags &= ~mask; | |
1053 | ifr.ifr_flags |= mask&flags; | |
1054 | err = ioctl(fd, SIOCSIFFLAGS, &ifr); | |
1055 | if (err) | |
1056 | perror("SIOCSIFFLAGS"); | |
1057 | } | |
1058 | close(fd); | |
1059 | return err; | |
1060 | } | |
1061 | ||
71058eb8 | 1062 | static int do_changename(const char *dev, const char *newdev) |
aba5acdf SH |
1063 | { |
1064 | struct ifreq ifr; | |
1065 | int fd; | |
1066 | int err; | |
1067 | ||
71058eb8 SH |
1068 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
1069 | strncpy(ifr.ifr_newname, newdev, IFNAMSIZ); | |
aba5acdf SH |
1070 | fd = get_ctl_fd(); |
1071 | if (fd < 0) | |
1072 | return -1; | |
1073 | err = ioctl(fd, SIOCSIFNAME, &ifr); | |
1074 | if (err) { | |
1075 | perror("SIOCSIFNAME"); | |
1076 | close(fd); | |
1077 | return -1; | |
1078 | } | |
1079 | close(fd); | |
1080 | return err; | |
1081 | } | |
1082 | ||
71058eb8 | 1083 | static int set_qlen(const char *dev, int qlen) |
aba5acdf | 1084 | { |
d17b136f | 1085 | struct ifreq ifr = { .ifr_qlen = qlen }; |
aba5acdf SH |
1086 | int s; |
1087 | ||
1088 | s = get_ctl_fd(); | |
1089 | if (s < 0) | |
1090 | return -1; | |
1091 | ||
ae665a52 | 1092 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
aba5acdf SH |
1093 | if (ioctl(s, SIOCSIFTXQLEN, &ifr) < 0) { |
1094 | perror("SIOCSIFXQLEN"); | |
1095 | close(s); | |
1096 | return -1; | |
1097 | } | |
1098 | close(s); | |
1099 | ||
ae665a52 | 1100 | return 0; |
aba5acdf SH |
1101 | } |
1102 | ||
71058eb8 | 1103 | static int set_mtu(const char *dev, int mtu) |
aba5acdf | 1104 | { |
d17b136f | 1105 | struct ifreq ifr = { .ifr_mtu = mtu }; |
aba5acdf SH |
1106 | int s; |
1107 | ||
1108 | s = get_ctl_fd(); | |
1109 | if (s < 0) | |
1110 | return -1; | |
1111 | ||
ae665a52 | 1112 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
aba5acdf SH |
1113 | if (ioctl(s, SIOCSIFMTU, &ifr) < 0) { |
1114 | perror("SIOCSIFMTU"); | |
1115 | close(s); | |
1116 | return -1; | |
1117 | } | |
1118 | close(s); | |
1119 | ||
ae665a52 | 1120 | return 0; |
aba5acdf SH |
1121 | } |
1122 | ||
71058eb8 | 1123 | static int get_address(const char *dev, int *htype) |
aba5acdf | 1124 | { |
d17b136f PS |
1125 | struct ifreq ifr = {}; |
1126 | struct sockaddr_ll me = { | |
1127 | .sll_family = AF_PACKET, | |
1128 | .sll_protocol = htons(ETH_P_LOOP), | |
1129 | }; | |
f332d169 | 1130 | socklen_t alen; |
aba5acdf SH |
1131 | int s; |
1132 | ||
1133 | s = socket(PF_PACKET, SOCK_DGRAM, 0); | |
ae665a52 | 1134 | if (s < 0) { |
aba5acdf SH |
1135 | perror("socket(PF_PACKET)"); |
1136 | return -1; | |
1137 | } | |
1138 | ||
71058eb8 | 1139 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
aba5acdf SH |
1140 | if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) { |
1141 | perror("SIOCGIFINDEX"); | |
1142 | close(s); | |
1143 | return -1; | |
1144 | } | |
1145 | ||
aba5acdf | 1146 | me.sll_ifindex = ifr.ifr_ifindex; |
6c5ffb9a | 1147 | if (bind(s, (struct sockaddr *)&me, sizeof(me)) == -1) { |
aba5acdf SH |
1148 | perror("bind"); |
1149 | close(s); | |
1150 | return -1; | |
1151 | } | |
1152 | ||
1153 | alen = sizeof(me); | |
6c5ffb9a | 1154 | if (getsockname(s, (struct sockaddr *)&me, &alen) == -1) { |
aba5acdf SH |
1155 | perror("getsockname"); |
1156 | close(s); | |
1157 | return -1; | |
1158 | } | |
1159 | close(s); | |
1160 | *htype = me.sll_hatype; | |
1161 | return me.sll_halen; | |
1162 | } | |
1163 | ||
ae665a52 | 1164 | static int parse_address(const char *dev, int hatype, int halen, |
7b565754 | 1165 | char *lla, struct ifreq *ifr) |
aba5acdf SH |
1166 | { |
1167 | int alen; | |
1168 | ||
1169 | memset(ifr, 0, sizeof(*ifr)); | |
71058eb8 | 1170 | strncpy(ifr->ifr_name, dev, IFNAMSIZ); |
aba5acdf SH |
1171 | ifr->ifr_hwaddr.sa_family = hatype; |
1172 | alen = ll_addr_a2n(ifr->ifr_hwaddr.sa_data, 14, lla); | |
1173 | if (alen < 0) | |
1174 | return -1; | |
1175 | if (alen != halen) { | |
ef0a738c SH |
1176 | fprintf(stderr, "Wrong address (%s) length: expected %d bytes\n", |
1177 | lla, halen); | |
aba5acdf SH |
1178 | return -1; |
1179 | } | |
ae665a52 | 1180 | return 0; |
aba5acdf SH |
1181 | } |
1182 | ||
1183 | static int set_address(struct ifreq *ifr, int brd) | |
1184 | { | |
1185 | int s; | |
1186 | ||
1187 | s = get_ctl_fd(); | |
1188 | if (s < 0) | |
1189 | return -1; | |
1190 | if (ioctl(s, brd?SIOCSIFHWBROADCAST:SIOCSIFHWADDR, ifr) < 0) { | |
1191 | perror(brd?"SIOCSIFHWBROADCAST":"SIOCSIFHWADDR"); | |
1192 | close(s); | |
1193 | return -1; | |
1194 | } | |
1195 | close(s); | |
ae665a52 | 1196 | return 0; |
aba5acdf SH |
1197 | } |
1198 | ||
aba5acdf SH |
1199 | static int do_set(int argc, char **argv) |
1200 | { | |
1201 | char *dev = NULL; | |
1202 | __u32 mask = 0; | |
1203 | __u32 flags = 0; | |
1204 | int qlen = -1; | |
1205 | int mtu = -1; | |
1206 | char *newaddr = NULL; | |
1207 | char *newbrd = NULL; | |
1208 | struct ifreq ifr0, ifr1; | |
1209 | char *newname = NULL; | |
1210 | int htype, halen; | |
1211 | ||
1212 | while (argc > 0) { | |
1213 | if (strcmp(*argv, "up") == 0) { | |
1214 | mask |= IFF_UP; | |
1215 | flags |= IFF_UP; | |
1216 | } else if (strcmp(*argv, "down") == 0) { | |
1217 | mask |= IFF_UP; | |
1218 | flags &= ~IFF_UP; | |
1219 | } else if (strcmp(*argv, "name") == 0) { | |
1220 | NEXT_ARG(); | |
1221 | newname = *argv; | |
1222 | } else if (matches(*argv, "address") == 0) { | |
1223 | NEXT_ARG(); | |
1224 | newaddr = *argv; | |
1225 | } else if (matches(*argv, "broadcast") == 0 || | |
1226 | strcmp(*argv, "brd") == 0) { | |
1227 | NEXT_ARG(); | |
1228 | newbrd = *argv; | |
1229 | } else if (matches(*argv, "txqueuelen") == 0 || | |
1230 | strcmp(*argv, "qlen") == 0 || | |
1231 | matches(*argv, "txqlen") == 0) { | |
1232 | NEXT_ARG(); | |
1233 | if (qlen != -1) | |
1234 | duparg("txqueuelen", *argv); | |
1235 | if (get_integer(&qlen, *argv, 0)) | |
1236 | invarg("Invalid \"txqueuelen\" value\n", *argv); | |
1237 | } else if (strcmp(*argv, "mtu") == 0) { | |
1238 | NEXT_ARG(); | |
1239 | if (mtu != -1) | |
1240 | duparg("mtu", *argv); | |
1241 | if (get_integer(&mtu, *argv, 0)) | |
1242 | invarg("Invalid \"mtu\" value\n", *argv); | |
1243 | } else if (strcmp(*argv, "multicast") == 0) { | |
1244 | NEXT_ARG(); | |
1245 | mask |= IFF_MULTICAST; | |
6c5ffb9a SH |
1246 | |
1247 | if (strcmp(*argv, "on") == 0) | |
aba5acdf | 1248 | flags |= IFF_MULTICAST; |
6c5ffb9a | 1249 | else if (strcmp(*argv, "off") == 0) |
aba5acdf | 1250 | flags &= ~IFF_MULTICAST; |
6c5ffb9a | 1251 | else |
14645ec2 | 1252 | return on_off("multicast", *argv); |
d27b1b5b | 1253 | } else if (strcmp(*argv, "allmulticast") == 0) { |
1254 | NEXT_ARG(); | |
1255 | mask |= IFF_ALLMULTI; | |
6c5ffb9a SH |
1256 | |
1257 | if (strcmp(*argv, "on") == 0) | |
d27b1b5b | 1258 | flags |= IFF_ALLMULTI; |
6c5ffb9a | 1259 | else if (strcmp(*argv, "off") == 0) |
d27b1b5b | 1260 | flags &= ~IFF_ALLMULTI; |
6c5ffb9a | 1261 | else |
14645ec2 | 1262 | return on_off("allmulticast", *argv); |
d27b1b5b | 1263 | } else if (strcmp(*argv, "promisc") == 0) { |
1264 | NEXT_ARG(); | |
1265 | mask |= IFF_PROMISC; | |
6c5ffb9a SH |
1266 | |
1267 | if (strcmp(*argv, "on") == 0) | |
d27b1b5b | 1268 | flags |= IFF_PROMISC; |
6c5ffb9a | 1269 | else if (strcmp(*argv, "off") == 0) |
d27b1b5b | 1270 | flags &= ~IFF_PROMISC; |
6c5ffb9a | 1271 | else |
14645ec2 | 1272 | return on_off("promisc", *argv); |
d27b1b5b | 1273 | } else if (strcmp(*argv, "trailers") == 0) { |
1274 | NEXT_ARG(); | |
1275 | mask |= IFF_NOTRAILERS; | |
6c5ffb9a SH |
1276 | |
1277 | if (strcmp(*argv, "off") == 0) | |
d27b1b5b | 1278 | flags |= IFF_NOTRAILERS; |
6c5ffb9a | 1279 | else if (strcmp(*argv, "on") == 0) |
d27b1b5b | 1280 | flags &= ~IFF_NOTRAILERS; |
6c5ffb9a | 1281 | else |
14645ec2 | 1282 | return on_off("trailers", *argv); |
aba5acdf SH |
1283 | } else if (strcmp(*argv, "arp") == 0) { |
1284 | NEXT_ARG(); | |
1285 | mask |= IFF_NOARP; | |
6c5ffb9a SH |
1286 | |
1287 | if (strcmp(*argv, "on") == 0) | |
aba5acdf | 1288 | flags &= ~IFF_NOARP; |
6c5ffb9a | 1289 | else if (strcmp(*argv, "off") == 0) |
aba5acdf | 1290 | flags |= IFF_NOARP; |
6c5ffb9a | 1291 | else |
ff1e35ed | 1292 | return on_off("arp", *argv); |
aba5acdf SH |
1293 | } else if (matches(*argv, "dynamic") == 0) { |
1294 | NEXT_ARG(); | |
1295 | mask |= IFF_DYNAMIC; | |
6c5ffb9a SH |
1296 | |
1297 | if (strcmp(*argv, "on") == 0) | |
aba5acdf | 1298 | flags |= IFF_DYNAMIC; |
6c5ffb9a | 1299 | else if (strcmp(*argv, "off") == 0) |
aba5acdf | 1300 | flags &= ~IFF_DYNAMIC; |
6c5ffb9a | 1301 | else |
14645ec2 | 1302 | return on_off("dynamic", *argv); |
aba5acdf | 1303 | } else { |
6c5ffb9a | 1304 | if (strcmp(*argv, "dev") == 0) |
aba5acdf | 1305 | NEXT_ARG(); |
8aacb9bb | 1306 | else if (matches(*argv, "help") == 0) |
aba5acdf | 1307 | usage(); |
6c5ffb9a | 1308 | |
aba5acdf SH |
1309 | if (dev) |
1310 | duparg2("dev", *argv); | |
1311 | dev = *argv; | |
1312 | } | |
1313 | argc--; argv++; | |
1314 | } | |
1315 | ||
1316 | if (!dev) { | |
ef0a738c SH |
1317 | fprintf(stderr, |
1318 | "Not enough of information: \"dev\" argument is required.\n"); | |
aba5acdf SH |
1319 | exit(-1); |
1320 | } | |
1321 | ||
1322 | if (newaddr || newbrd) { | |
1323 | halen = get_address(dev, &htype); | |
1324 | if (halen < 0) | |
1325 | return -1; | |
1326 | if (newaddr) { | |
1327 | if (parse_address(dev, htype, halen, newaddr, &ifr0) < 0) | |
1328 | return -1; | |
1329 | } | |
1330 | if (newbrd) { | |
1331 | if (parse_address(dev, htype, halen, newbrd, &ifr1) < 0) | |
ae665a52 | 1332 | return -1; |
aba5acdf SH |
1333 | } |
1334 | } | |
1335 | ||
1336 | if (newname && strcmp(dev, newname)) { | |
ca78b0e7 PM |
1337 | if (strlen(newname) == 0) |
1338 | invarg("\"\" is not a valid device identifier\n", "name"); | |
aba5acdf SH |
1339 | if (do_changename(dev, newname) < 0) |
1340 | return -1; | |
1341 | dev = newname; | |
1342 | } | |
ae665a52 | 1343 | if (qlen != -1) { |
aba5acdf | 1344 | if (set_qlen(dev, qlen) < 0) |
ae665a52 | 1345 | return -1; |
aba5acdf | 1346 | } |
ae665a52 | 1347 | if (mtu != -1) { |
aba5acdf | 1348 | if (set_mtu(dev, mtu) < 0) |
ae665a52 | 1349 | return -1; |
aba5acdf SH |
1350 | } |
1351 | if (newaddr || newbrd) { | |
1352 | if (newbrd) { | |
1353 | if (set_address(&ifr1, 1) < 0) | |
ae665a52 | 1354 | return -1; |
aba5acdf SH |
1355 | } |
1356 | if (newaddr) { | |
1357 | if (set_address(&ifr0, 0) < 0) | |
1358 | return -1; | |
1359 | } | |
1360 | } | |
1361 | if (mask) | |
1362 | return do_chflags(dev, flags, mask); | |
1363 | return 0; | |
1364 | } | |
1d934839 | 1365 | #endif /* IPLINK_IOCTL_COMPAT */ |
aba5acdf | 1366 | |
561e650e | 1367 | static void do_help(int argc, char **argv) |
1368 | { | |
1369 | struct link_util *lu = NULL; | |
1370 | ||
1371 | if (argc <= 0) { | |
1372 | usage(); | |
6c5ffb9a | 1373 | return; |
561e650e | 1374 | } |
1375 | ||
1376 | lu = get_link_kind(*argv); | |
561e650e | 1377 | if (lu && lu->print_help) |
1378 | lu->print_help(lu, argc-1, argv+1, stdout); | |
1379 | else | |
1380 | usage(); | |
1381 | } | |
1382 | ||
aba5acdf SH |
1383 | int do_iplink(int argc, char **argv) |
1384 | { | |
6843d36e ZS |
1385 | if (argc < 1) |
1386 | return ipaddr_list_link(0, NULL); | |
1387 | ||
1388 | if (iplink_have_newlink()) { | |
1389 | if (matches(*argv, "add") == 0) | |
1390 | return iplink_modify(RTM_NEWLINK, | |
6c5ffb9a SH |
1391 | NLM_F_CREATE|NLM_F_EXCL, |
1392 | argc-1, argv+1); | |
6843d36e | 1393 | if (matches(*argv, "set") == 0 || |
6c5ffb9a | 1394 | matches(*argv, "change") == 0) |
6843d36e | 1395 | return iplink_modify(RTM_NEWLINK, 0, |
6c5ffb9a | 1396 | argc-1, argv+1); |
6843d36e ZS |
1397 | if (matches(*argv, "replace") == 0) |
1398 | return iplink_modify(RTM_NEWLINK, | |
6c5ffb9a SH |
1399 | NLM_F_CREATE|NLM_F_REPLACE, |
1400 | argc-1, argv+1); | |
6843d36e ZS |
1401 | if (matches(*argv, "delete") == 0) |
1402 | return iplink_modify(RTM_DELLINK, 0, | |
6c5ffb9a | 1403 | argc-1, argv+1); |
6843d36e | 1404 | } else { |
1d934839 | 1405 | #if IPLINK_IOCTL_COMPAT |
6843d36e ZS |
1406 | if (matches(*argv, "set") == 0) |
1407 | return do_set(argc-1, argv+1); | |
1d934839 | 1408 | #endif |
6843d36e | 1409 | } |
6c5ffb9a | 1410 | |
6843d36e | 1411 | if (matches(*argv, "show") == 0 || |
6c5ffb9a SH |
1412 | matches(*argv, "lst") == 0 || |
1413 | matches(*argv, "list") == 0) | |
6843d36e | 1414 | return ipaddr_list_link(argc-1, argv+1); |
6c5ffb9a | 1415 | |
94f1a22a NA |
1416 | if (matches(*argv, "xstats") == 0) |
1417 | return iplink_ifla_xstats(argc-1, argv+1); | |
1418 | ||
6843d36e ZS |
1419 | if (matches(*argv, "help") == 0) { |
1420 | do_help(argc-1, argv+1); | |
1421 | return 0; | |
1422 | } | |
aba5acdf | 1423 | |
6843d36e | 1424 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip link help\".\n", |
6c5ffb9a | 1425 | *argv); |
aba5acdf SH |
1426 | exit(-1); |
1427 | } |