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Merge branch 'iproute2-master' into iproute2-next
[mirror_iproute2.git] / ip / iplink.c
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 <fcntl.h>
17 #include <dlfcn.h>
18 #include <errno.h>
19 #include <sys/socket.h>
20 #include <linux/if.h>
21 #include <linux/if_packet.h>
22 #include <linux/if_ether.h>
23 #include <linux/sockios.h>
24 #include <netinet/in.h>
25 #include <arpa/inet.h>
26 #include <string.h>
27 #include <sys/ioctl.h>
28 #include <stdbool.h>
29 #include <linux/mpls.h>
30
31 #include "rt_names.h"
32 #include "utils.h"
33 #include "ip_common.h"
34 #include "namespace.h"
35
36 #define IPLINK_IOCTL_COMPAT 1
37 #ifndef LIBDIR
38 #define LIBDIR "/usr/lib"
39 #endif
40
41 #ifndef GSO_MAX_SIZE
42 #define GSO_MAX_SIZE 65536
43 #endif
44 #ifndef GSO_MAX_SEGS
45 #define GSO_MAX_SEGS 65535
46 #endif
47
48
49 static void usage(void) __attribute__((noreturn));
50 static int iplink_have_newlink(void);
51
52 void iplink_usage(void)
53 {
54 if (iplink_have_newlink()) {
55 fprintf(stderr,
56 "Usage: ip link add [link DEV] [ name ] NAME\n"
57 " [ txqueuelen PACKETS ]\n"
58 " [ address LLADDR ]\n"
59 " [ broadcast LLADDR ]\n"
60 " [ mtu MTU ] [index IDX ]\n"
61 " [ numtxqueues QUEUE_COUNT ]\n"
62 " [ numrxqueues QUEUE_COUNT ]\n"
63 " type TYPE [ ARGS ]\n"
64 "\n"
65 " ip link delete { DEVICE | dev DEVICE | group DEVGROUP } type TYPE [ ARGS ]\n"
66 "\n"
67 " ip link set { DEVICE | dev DEVICE | group DEVGROUP }\n"
68 " [ { up | down } ]\n"
69 " [ type TYPE ARGS ]\n");
70 } else
71 fprintf(stderr,
72 "Usage: ip link set DEVICE [ { up | down } ]\n");
73
74 fprintf(stderr,
75 " [ arp { on | off } ]\n"
76 " [ dynamic { on | off } ]\n"
77 " [ multicast { on | off } ]\n"
78 " [ allmulticast { on | off } ]\n"
79 " [ promisc { on | off } ]\n"
80 " [ trailers { on | off } ]\n"
81 " [ carrier { on | off } ]\n"
82 " [ txqueuelen PACKETS ]\n"
83 " [ name NEWNAME ]\n"
84 " [ address LLADDR ]\n"
85 " [ broadcast LLADDR ]\n"
86 " [ mtu MTU ]\n"
87 " [ netns { PID | NAME } ]\n"
88 " [ link-netnsid ID ]\n"
89 " [ alias NAME ]\n"
90 " [ vf NUM [ mac LLADDR ]\n"
91 " [ vlan VLANID [ qos VLAN-QOS ] [ proto VLAN-PROTO ] ]\n"
92 " [ rate TXRATE ]\n"
93 " [ max_tx_rate TXRATE ]\n"
94 " [ min_tx_rate TXRATE ]\n"
95 " [ spoofchk { on | off} ]\n"
96 " [ query_rss { on | off} ]\n"
97 " [ state { auto | enable | disable} ] ]\n"
98 " [ trust { on | off} ] ]\n"
99 " [ node_guid { eui64 } ]\n"
100 " [ port_guid { eui64 } ]\n"
101 " [ xdp { off |\n"
102 " object FILE [ section NAME ] [ verbose ] |\n"
103 " pinned FILE } ]\n"
104 " [ master DEVICE ][ vrf NAME ]\n"
105 " [ nomaster ]\n"
106 " [ addrgenmode { eui64 | none | stable_secret | random } ]\n"
107 " [ protodown { on | off } ]\n"
108 " [ gso_max_size BYTES ] | [ gso_max_segs PACKETS ]\n"
109 "\n"
110 " ip link show [ DEVICE | group GROUP ] [up] [master DEV] [vrf NAME] [type TYPE]\n");
111
112 fprintf(stderr, "\n ip link xstats type TYPE [ ARGS ]\n");
113 fprintf(stderr, "\n ip link afstats [ dev DEVICE ]\n");
114
115 if (iplink_have_newlink()) {
116 fprintf(stderr,
117 "\n"
118 " ip link help [ TYPE ]\n"
119 "\n"
120 "TYPE := { vlan | veth | vcan | vxcan | dummy | ifb | macvlan | macvtap |\n"
121 " bridge | bond | team | ipoib | ip6tnl | ipip | sit | vxlan |\n"
122 " gre | gretap | erspan | ip6gre | ip6gretap | ip6erspan |\n"
123 " vti | nlmon | team_slave | bond_slave | ipvlan | geneve |\n"
124 " bridge_slave | vrf | macsec | netdevsim }\n");
125 }
126 exit(-1);
127 }
128
129 static void usage(void)
130 {
131 iplink_usage();
132 }
133
134 static int on_off(const char *msg, const char *realval)
135 {
136 fprintf(stderr,
137 "Error: argument of \"%s\" must be \"on\" or \"off\", not \"%s\"\n",
138 msg, realval);
139 return -1;
140 }
141
142 static void *BODY; /* cached dlopen(NULL) handle */
143 static struct link_util *linkutil_list;
144
145 struct link_util *get_link_kind(const char *id)
146 {
147 void *dlh;
148 char buf[256];
149 struct link_util *l;
150
151 for (l = linkutil_list; l; l = l->next)
152 if (strcmp(l->id, id) == 0)
153 return l;
154
155 snprintf(buf, sizeof(buf), LIBDIR "/ip/link_%s.so", id);
156 dlh = dlopen(buf, RTLD_LAZY);
157 if (dlh == NULL) {
158 /* look in current binary, only open once */
159 dlh = BODY;
160 if (dlh == NULL) {
161 dlh = BODY = dlopen(NULL, RTLD_LAZY);
162 if (dlh == NULL)
163 return NULL;
164 }
165 }
166
167 snprintf(buf, sizeof(buf), "%s_link_util", id);
168 l = dlsym(dlh, buf);
169 if (l == NULL)
170 return NULL;
171
172 l->next = linkutil_list;
173 linkutil_list = l;
174 return l;
175 }
176
177 static int get_link_mode(const char *mode)
178 {
179 if (strcasecmp(mode, "default") == 0)
180 return IF_LINK_MODE_DEFAULT;
181 if (strcasecmp(mode, "dormant") == 0)
182 return IF_LINK_MODE_DORMANT;
183 return -1;
184 }
185
186 static int get_addr_gen_mode(const char *mode)
187 {
188 if (strcasecmp(mode, "eui64") == 0)
189 return IN6_ADDR_GEN_MODE_EUI64;
190 if (strcasecmp(mode, "none") == 0)
191 return IN6_ADDR_GEN_MODE_NONE;
192 if (strcasecmp(mode, "stable_secret") == 0)
193 return IN6_ADDR_GEN_MODE_STABLE_PRIVACY;
194 if (strcasecmp(mode, "random") == 0)
195 return IN6_ADDR_GEN_MODE_RANDOM;
196 return -1;
197 }
198
199 #if IPLINK_IOCTL_COMPAT
200 static int have_rtnl_newlink = -1;
201
202 static int accept_msg(const struct sockaddr_nl *who,
203 struct rtnl_ctrl_data *ctrl,
204 struct nlmsghdr *n, void *arg)
205 {
206 struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(n);
207
208 if (n->nlmsg_type == NLMSG_ERROR &&
209 (err->error == -EOPNOTSUPP || err->error == -EINVAL))
210 have_rtnl_newlink = 0;
211 else
212 have_rtnl_newlink = 1;
213 return -1;
214 }
215
216 static int iplink_have_newlink(void)
217 {
218 struct {
219 struct nlmsghdr n;
220 struct ifinfomsg i;
221 char buf[1024];
222 } req = {
223 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
224 .n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
225 .n.nlmsg_type = RTM_NEWLINK,
226 .i.ifi_family = AF_UNSPEC,
227 };
228
229 if (have_rtnl_newlink < 0) {
230 if (rtnl_send(&rth, &req.n, req.n.nlmsg_len) < 0) {
231 perror("request send failed");
232 exit(1);
233 }
234 rtnl_listen(&rth, accept_msg, NULL);
235 }
236 return have_rtnl_newlink;
237 }
238 #else /* IPLINK_IOCTL_COMPAT */
239 static int iplink_have_newlink(void)
240 {
241 return 1;
242 }
243 #endif /* ! IPLINK_IOCTL_COMPAT */
244
245 static int nl_get_ll_addr_len(unsigned int dev_index)
246 {
247 int len;
248 struct iplink_req req = {
249 .n = {
250 .nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
251 .nlmsg_type = RTM_GETLINK,
252 .nlmsg_flags = NLM_F_REQUEST
253 },
254 .i = {
255 .ifi_family = preferred_family,
256 .ifi_index = dev_index,
257 }
258 };
259 struct nlmsghdr *answer;
260 struct rtattr *tb[IFLA_MAX+1];
261
262 if (rtnl_talk(&rth, &req.n, &answer) < 0)
263 return -1;
264
265 len = answer->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg));
266 if (len < 0) {
267 free(answer);
268 return -1;
269 }
270
271 parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(NLMSG_DATA(answer)),
272 len, NLA_F_NESTED);
273 if (!tb[IFLA_ADDRESS]) {
274 free(answer);
275 return -1;
276 }
277
278 len = RTA_PAYLOAD(tb[IFLA_ADDRESS]);
279 free(answer);
280 return len;
281 }
282
283 static void iplink_parse_vf_vlan_info(int vf, int *argcp, char ***argvp,
284 struct ifla_vf_vlan_info *ivvip)
285 {
286 int argc = *argcp;
287 char **argv = *argvp;
288 unsigned int vci;
289
290 NEXT_ARG();
291 if (get_unsigned(&vci, *argv, 0) || vci > 4095)
292 invarg("Invalid \"vlan\" value\n", *argv);
293
294 ivvip->vlan = vci;
295 ivvip->vf = vf;
296 ivvip->qos = 0;
297 ivvip->vlan_proto = htons(ETH_P_8021Q);
298 if (NEXT_ARG_OK()) {
299 NEXT_ARG();
300 if (matches(*argv, "qos") == 0) {
301 NEXT_ARG();
302 if (get_unsigned(&ivvip->qos, *argv, 0))
303 invarg("Invalid \"qos\" value\n", *argv);
304 } else {
305 /* rewind arg */
306 PREV_ARG();
307 }
308 }
309 if (NEXT_ARG_OK()) {
310 NEXT_ARG();
311 if (matches(*argv, "proto") == 0) {
312 NEXT_ARG();
313 if (ll_proto_a2n(&ivvip->vlan_proto, *argv))
314 invarg("protocol is invalid\n", *argv);
315 if (ivvip->vlan_proto != htons(ETH_P_8021AD) &&
316 ivvip->vlan_proto != htons(ETH_P_8021Q)) {
317 SPRINT_BUF(b1);
318 SPRINT_BUF(b2);
319 char msg[64 + sizeof(b1) + sizeof(b2)];
320
321 sprintf(msg,
322 "Invalid \"vlan protocol\" value - supported %s, %s\n",
323 ll_proto_n2a(htons(ETH_P_8021Q),
324 b1, sizeof(b1)),
325 ll_proto_n2a(htons(ETH_P_8021AD),
326 b2, sizeof(b2)));
327 invarg(msg, *argv);
328 }
329 } else {
330 /* rewind arg */
331 PREV_ARG();
332 }
333 }
334
335 *argcp = argc;
336 *argvp = argv;
337 }
338
339 static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
340 struct iplink_req *req, int dev_index)
341 {
342 char new_rate_api = 0, count = 0, override_legacy_rate = 0;
343 struct ifla_vf_rate tivt;
344 int len, argc = *argcp;
345 char **argv = *argvp;
346 struct rtattr *vfinfo;
347
348 tivt.min_tx_rate = -1;
349 tivt.max_tx_rate = -1;
350
351 vfinfo = addattr_nest(&req->n, sizeof(*req), IFLA_VF_INFO);
352
353 while (NEXT_ARG_OK()) {
354 NEXT_ARG();
355 count++;
356 if (!matches(*argv, "max_tx_rate")) {
357 /* new API in use */
358 new_rate_api = 1;
359 /* override legacy rate */
360 override_legacy_rate = 1;
361 } else if (!matches(*argv, "min_tx_rate")) {
362 /* new API in use */
363 new_rate_api = 1;
364 }
365 }
366
367 while (count--) {
368 /* rewind arg */
369 PREV_ARG();
370 }
371
372 while (NEXT_ARG_OK()) {
373 NEXT_ARG();
374 if (matches(*argv, "mac") == 0) {
375 struct ifla_vf_mac ivm = { 0 };
376 int halen = nl_get_ll_addr_len(dev_index);
377
378 NEXT_ARG();
379 ivm.vf = vf;
380 len = ll_addr_a2n((char *)ivm.mac, 32, *argv);
381 if (len < 0)
382 return -1;
383 if (halen > 0 && len != halen) {
384 fprintf(stderr,
385 "Invalid address length %d - must be %d bytes\n",
386 len, halen);
387 return -1;
388 }
389 addattr_l(&req->n, sizeof(*req), IFLA_VF_MAC,
390 &ivm, sizeof(ivm));
391 } else if (matches(*argv, "vlan") == 0) {
392 struct ifla_vf_vlan_info ivvi;
393
394 iplink_parse_vf_vlan_info(vf, &argc, &argv, &ivvi);
395 /* support the old interface in case of older kernel*/
396 if (ivvi.vlan_proto == htons(ETH_P_8021Q)) {
397 struct ifla_vf_vlan ivv;
398
399 ivv.vf = ivvi.vf;
400 ivv.vlan = ivvi.vlan;
401 ivv.qos = ivvi.qos;
402 addattr_l(&req->n, sizeof(*req),
403 IFLA_VF_VLAN, &ivv, sizeof(ivv));
404 } else {
405 struct rtattr *vfvlanlist;
406
407 vfvlanlist = addattr_nest(&req->n, sizeof(*req),
408 IFLA_VF_VLAN_LIST);
409 addattr_l(&req->n, sizeof(*req),
410 IFLA_VF_VLAN_INFO, &ivvi,
411 sizeof(ivvi));
412
413 while (NEXT_ARG_OK()) {
414 NEXT_ARG();
415 if (matches(*argv, "vlan") != 0) {
416 PREV_ARG();
417 break;
418 }
419 iplink_parse_vf_vlan_info(vf, &argc,
420 &argv, &ivvi);
421 addattr_l(&req->n, sizeof(*req),
422 IFLA_VF_VLAN_INFO, &ivvi,
423 sizeof(ivvi));
424 }
425 addattr_nest_end(&req->n, vfvlanlist);
426 }
427 } else if (matches(*argv, "rate") == 0) {
428 struct ifla_vf_tx_rate ivt;
429
430 NEXT_ARG();
431 if (get_unsigned(&ivt.rate, *argv, 0))
432 invarg("Invalid \"rate\" value\n", *argv);
433
434 ivt.vf = vf;
435 if (!new_rate_api)
436 addattr_l(&req->n, sizeof(*req),
437 IFLA_VF_TX_RATE, &ivt, sizeof(ivt));
438 else if (!override_legacy_rate)
439 tivt.max_tx_rate = ivt.rate;
440
441 } else if (matches(*argv, "max_tx_rate") == 0) {
442 NEXT_ARG();
443 if (get_unsigned(&tivt.max_tx_rate, *argv, 0))
444 invarg("Invalid \"max tx rate\" value\n",
445 *argv);
446 tivt.vf = vf;
447
448 } else if (matches(*argv, "min_tx_rate") == 0) {
449 NEXT_ARG();
450 if (get_unsigned(&tivt.min_tx_rate, *argv, 0))
451 invarg("Invalid \"min tx rate\" value\n",
452 *argv);
453 tivt.vf = vf;
454
455 } else if (matches(*argv, "spoofchk") == 0) {
456 struct ifla_vf_spoofchk ivs;
457
458 NEXT_ARG();
459 if (matches(*argv, "on") == 0)
460 ivs.setting = 1;
461 else if (matches(*argv, "off") == 0)
462 ivs.setting = 0;
463 else
464 return on_off("spoofchk", *argv);
465 ivs.vf = vf;
466 addattr_l(&req->n, sizeof(*req), IFLA_VF_SPOOFCHK,
467 &ivs, sizeof(ivs));
468
469 } else if (matches(*argv, "query_rss") == 0) {
470 struct ifla_vf_rss_query_en ivs;
471
472 NEXT_ARG();
473 if (matches(*argv, "on") == 0)
474 ivs.setting = 1;
475 else if (matches(*argv, "off") == 0)
476 ivs.setting = 0;
477 else
478 return on_off("query_rss", *argv);
479 ivs.vf = vf;
480 addattr_l(&req->n, sizeof(*req), IFLA_VF_RSS_QUERY_EN,
481 &ivs, sizeof(ivs));
482
483 } else if (matches(*argv, "trust") == 0) {
484 struct ifla_vf_trust ivt;
485
486 NEXT_ARG();
487 if (matches(*argv, "on") == 0)
488 ivt.setting = 1;
489 else if (matches(*argv, "off") == 0)
490 ivt.setting = 0;
491 else
492 invarg("Invalid \"trust\" value\n", *argv);
493 ivt.vf = vf;
494 addattr_l(&req->n, sizeof(*req), IFLA_VF_TRUST,
495 &ivt, sizeof(ivt));
496
497 } else if (matches(*argv, "state") == 0) {
498 struct ifla_vf_link_state ivl;
499
500 NEXT_ARG();
501 if (matches(*argv, "auto") == 0)
502 ivl.link_state = IFLA_VF_LINK_STATE_AUTO;
503 else if (matches(*argv, "enable") == 0)
504 ivl.link_state = IFLA_VF_LINK_STATE_ENABLE;
505 else if (matches(*argv, "disable") == 0)
506 ivl.link_state = IFLA_VF_LINK_STATE_DISABLE;
507 else
508 invarg("Invalid \"state\" value\n", *argv);
509 ivl.vf = vf;
510 addattr_l(&req->n, sizeof(*req), IFLA_VF_LINK_STATE,
511 &ivl, sizeof(ivl));
512 } else if (matches(*argv, "node_guid") == 0) {
513 struct ifla_vf_guid ivg;
514
515 NEXT_ARG();
516 ivg.vf = vf;
517 if (get_guid(&ivg.guid, *argv)) {
518 invarg("Invalid GUID format\n", *argv);
519 return -1;
520 }
521 addattr_l(&req->n, sizeof(*req), IFLA_VF_IB_NODE_GUID,
522 &ivg, sizeof(ivg));
523 } else if (matches(*argv, "port_guid") == 0) {
524 struct ifla_vf_guid ivg;
525
526 NEXT_ARG();
527 ivg.vf = vf;
528 if (get_guid(&ivg.guid, *argv)) {
529 invarg("Invalid GUID format\n", *argv);
530 return -1;
531 }
532 addattr_l(&req->n, sizeof(*req), IFLA_VF_IB_PORT_GUID,
533 &ivg, sizeof(ivg));
534 } else {
535 /* rewind arg */
536 PREV_ARG();
537 break;
538 }
539 }
540
541 if (new_rate_api) {
542 int tmin, tmax;
543
544 if (tivt.min_tx_rate == -1 || tivt.max_tx_rate == -1) {
545 ipaddr_get_vf_rate(tivt.vf, &tmin, &tmax, dev_index);
546 if (tivt.min_tx_rate == -1)
547 tivt.min_tx_rate = tmin;
548 if (tivt.max_tx_rate == -1)
549 tivt.max_tx_rate = tmax;
550 }
551
552 if (tivt.max_tx_rate && tivt.min_tx_rate > tivt.max_tx_rate) {
553 fprintf(stderr,
554 "Invalid min_tx_rate %d - must be <= max_tx_rate %d\n",
555 tivt.min_tx_rate, tivt.max_tx_rate);
556 return -1;
557 }
558
559 addattr_l(&req->n, sizeof(*req), IFLA_VF_RATE, &tivt,
560 sizeof(tivt));
561 }
562
563 if (argc == *argcp)
564 incomplete_command();
565
566 addattr_nest_end(&req->n, vfinfo);
567
568 *argcp = argc;
569 *argvp = argv;
570 return 0;
571 }
572
573 int iplink_parse(int argc, char **argv, struct iplink_req *req, char **type)
574 {
575 char *name = NULL;
576 char *dev = NULL;
577 char *link = NULL;
578 int ret, len;
579 char abuf[32];
580 int qlen = -1;
581 int mtu = -1;
582 int netns = -1;
583 int vf = -1;
584 int numtxqueues = -1;
585 int numrxqueues = -1;
586 int dev_index = 0;
587 int link_netnsid = -1;
588 int index = 0;
589 int group = -1;
590 int addr_len = 0;
591
592 ret = argc;
593
594 while (argc > 0) {
595 if (strcmp(*argv, "up") == 0) {
596 req->i.ifi_change |= IFF_UP;
597 req->i.ifi_flags |= IFF_UP;
598 } else if (strcmp(*argv, "down") == 0) {
599 req->i.ifi_change |= IFF_UP;
600 req->i.ifi_flags &= ~IFF_UP;
601 } else if (strcmp(*argv, "name") == 0) {
602 NEXT_ARG();
603 if (name)
604 duparg("name", *argv);
605 if (check_ifname(*argv))
606 invarg("\"name\" not a valid ifname", *argv);
607 name = *argv;
608 if (!dev) {
609 dev = name;
610 dev_index = ll_name_to_index(dev);
611 }
612 } else if (strcmp(*argv, "index") == 0) {
613 NEXT_ARG();
614 if (index)
615 duparg("index", *argv);
616 index = atoi(*argv);
617 if (index <= 0)
618 invarg("Invalid \"index\" value", *argv);
619 } else if (matches(*argv, "link") == 0) {
620 NEXT_ARG();
621 link = *argv;
622 } else if (matches(*argv, "address") == 0) {
623 NEXT_ARG();
624 addr_len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
625 if (addr_len < 0)
626 return -1;
627 addattr_l(&req->n, sizeof(*req),
628 IFLA_ADDRESS, abuf, addr_len);
629 } else if (matches(*argv, "broadcast") == 0 ||
630 strcmp(*argv, "brd") == 0) {
631 NEXT_ARG();
632 len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
633 if (len < 0)
634 return -1;
635 addattr_l(&req->n, sizeof(*req),
636 IFLA_BROADCAST, abuf, len);
637 } else if (matches(*argv, "txqueuelen") == 0 ||
638 strcmp(*argv, "qlen") == 0 ||
639 matches(*argv, "txqlen") == 0) {
640 NEXT_ARG();
641 if (qlen != -1)
642 duparg("txqueuelen", *argv);
643 if (get_integer(&qlen, *argv, 0))
644 invarg("Invalid \"txqueuelen\" value\n", *argv);
645 addattr_l(&req->n, sizeof(*req),
646 IFLA_TXQLEN, &qlen, 4);
647 } else if (strcmp(*argv, "mtu") == 0) {
648 NEXT_ARG();
649 if (mtu != -1)
650 duparg("mtu", *argv);
651 if (get_integer(&mtu, *argv, 0))
652 invarg("Invalid \"mtu\" value\n", *argv);
653 addattr_l(&req->n, sizeof(*req), IFLA_MTU, &mtu, 4);
654 } else if (strcmp(*argv, "xdpgeneric") == 0 ||
655 strcmp(*argv, "xdpdrv") == 0 ||
656 strcmp(*argv, "xdpoffload") == 0 ||
657 strcmp(*argv, "xdp") == 0) {
658 bool generic = strcmp(*argv, "xdpgeneric") == 0;
659 bool drv = strcmp(*argv, "xdpdrv") == 0;
660 bool offload = strcmp(*argv, "xdpoffload") == 0;
661
662 NEXT_ARG();
663 if (xdp_parse(&argc, &argv, req, dev_index,
664 generic, drv, offload))
665 exit(-1);
666
667 if (offload && name == dev)
668 dev = NULL;
669 } else if (strcmp(*argv, "netns") == 0) {
670 NEXT_ARG();
671 if (netns != -1)
672 duparg("netns", *argv);
673 netns = netns_get_fd(*argv);
674 if (netns >= 0)
675 addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_FD,
676 &netns, 4);
677 else if (get_integer(&netns, *argv, 0) == 0)
678 addattr_l(&req->n, sizeof(*req),
679 IFLA_NET_NS_PID, &netns, 4);
680 else
681 invarg("Invalid \"netns\" value\n", *argv);
682 } else if (strcmp(*argv, "multicast") == 0) {
683 NEXT_ARG();
684 req->i.ifi_change |= IFF_MULTICAST;
685
686 if (strcmp(*argv, "on") == 0)
687 req->i.ifi_flags |= IFF_MULTICAST;
688 else if (strcmp(*argv, "off") == 0)
689 req->i.ifi_flags &= ~IFF_MULTICAST;
690 else
691 return on_off("multicast", *argv);
692 } else if (strcmp(*argv, "allmulticast") == 0) {
693 NEXT_ARG();
694 req->i.ifi_change |= IFF_ALLMULTI;
695
696 if (strcmp(*argv, "on") == 0)
697 req->i.ifi_flags |= IFF_ALLMULTI;
698 else if (strcmp(*argv, "off") == 0)
699 req->i.ifi_flags &= ~IFF_ALLMULTI;
700 else
701 return on_off("allmulticast", *argv);
702 } else if (strcmp(*argv, "promisc") == 0) {
703 NEXT_ARG();
704 req->i.ifi_change |= IFF_PROMISC;
705
706 if (strcmp(*argv, "on") == 0)
707 req->i.ifi_flags |= IFF_PROMISC;
708 else if (strcmp(*argv, "off") == 0)
709 req->i.ifi_flags &= ~IFF_PROMISC;
710 else
711 return on_off("promisc", *argv);
712 } else if (strcmp(*argv, "trailers") == 0) {
713 NEXT_ARG();
714 req->i.ifi_change |= IFF_NOTRAILERS;
715
716 if (strcmp(*argv, "off") == 0)
717 req->i.ifi_flags |= IFF_NOTRAILERS;
718 else if (strcmp(*argv, "on") == 0)
719 req->i.ifi_flags &= ~IFF_NOTRAILERS;
720 else
721 return on_off("trailers", *argv);
722 } else if (strcmp(*argv, "arp") == 0) {
723 NEXT_ARG();
724 req->i.ifi_change |= IFF_NOARP;
725
726 if (strcmp(*argv, "on") == 0)
727 req->i.ifi_flags &= ~IFF_NOARP;
728 else if (strcmp(*argv, "off") == 0)
729 req->i.ifi_flags |= IFF_NOARP;
730 else
731 return on_off("arp", *argv);
732 } else if (strcmp(*argv, "carrier") == 0) {
733 int carrier;
734
735 NEXT_ARG();
736 if (strcmp(*argv, "on") == 0)
737 carrier = 1;
738 else if (strcmp(*argv, "off") == 0)
739 carrier = 0;
740 else
741 return on_off("carrier", *argv);
742
743 addattr8(&req->n, sizeof(*req), IFLA_CARRIER, carrier);
744 } else if (strcmp(*argv, "vf") == 0) {
745 struct rtattr *vflist;
746
747 NEXT_ARG();
748 if (get_integer(&vf, *argv, 0))
749 invarg("Invalid \"vf\" value\n", *argv);
750
751 vflist = addattr_nest(&req->n, sizeof(*req),
752 IFLA_VFINFO_LIST);
753 if (dev_index == 0)
754 missarg("dev");
755
756 len = iplink_parse_vf(vf, &argc, &argv, req, dev_index);
757 if (len < 0)
758 return -1;
759 addattr_nest_end(&req->n, vflist);
760
761 if (name == dev)
762 dev = NULL;
763 } else if (matches(*argv, "master") == 0) {
764 int ifindex;
765
766 NEXT_ARG();
767 ifindex = ll_name_to_index(*argv);
768 if (!ifindex)
769 invarg("Device does not exist\n", *argv);
770 addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
771 &ifindex, 4);
772 } else if (strcmp(*argv, "vrf") == 0) {
773 int ifindex;
774
775 NEXT_ARG();
776 ifindex = ll_name_to_index(*argv);
777 if (!ifindex)
778 invarg("Not a valid VRF name\n", *argv);
779 if (!name_is_vrf(*argv))
780 invarg("Not a valid VRF name\n", *argv);
781 addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
782 &ifindex, sizeof(ifindex));
783 } else if (matches(*argv, "nomaster") == 0) {
784 int ifindex = 0;
785
786 addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
787 &ifindex, 4);
788 } else if (matches(*argv, "dynamic") == 0) {
789 NEXT_ARG();
790 req->i.ifi_change |= IFF_DYNAMIC;
791
792 if (strcmp(*argv, "on") == 0)
793 req->i.ifi_flags |= IFF_DYNAMIC;
794 else if (strcmp(*argv, "off") == 0)
795 req->i.ifi_flags &= ~IFF_DYNAMIC;
796 else
797 return on_off("dynamic", *argv);
798 } else if (matches(*argv, "type") == 0) {
799 NEXT_ARG();
800 *type = *argv;
801 argc--; argv++;
802 break;
803 } else if (matches(*argv, "alias") == 0) {
804 NEXT_ARG();
805 len = strlen(*argv);
806 if (len >= IFALIASZ)
807 invarg("alias too long\n", *argv);
808 addattr_l(&req->n, sizeof(*req), IFLA_IFALIAS,
809 *argv, len);
810 } else if (strcmp(*argv, "group") == 0) {
811 NEXT_ARG();
812 if (group != -1)
813 duparg("group", *argv);
814 if (rtnl_group_a2n(&group, *argv))
815 invarg("Invalid \"group\" value\n", *argv);
816 addattr32(&req->n, sizeof(*req), IFLA_GROUP, group);
817 } else if (strcmp(*argv, "mode") == 0) {
818 int mode;
819
820 NEXT_ARG();
821 mode = get_link_mode(*argv);
822 if (mode < 0)
823 invarg("Invalid link mode\n", *argv);
824 addattr8(&req->n, sizeof(*req), IFLA_LINKMODE, mode);
825 } else if (strcmp(*argv, "state") == 0) {
826 int state;
827
828 NEXT_ARG();
829 state = get_operstate(*argv);
830 if (state < 0)
831 invarg("Invalid operstate\n", *argv);
832
833 addattr8(&req->n, sizeof(*req), IFLA_OPERSTATE, state);
834 } else if (matches(*argv, "numtxqueues") == 0) {
835 NEXT_ARG();
836 if (numtxqueues != -1)
837 duparg("numtxqueues", *argv);
838 if (get_integer(&numtxqueues, *argv, 0))
839 invarg("Invalid \"numtxqueues\" value\n",
840 *argv);
841 addattr_l(&req->n, sizeof(*req), IFLA_NUM_TX_QUEUES,
842 &numtxqueues, 4);
843 } else if (matches(*argv, "numrxqueues") == 0) {
844 NEXT_ARG();
845 if (numrxqueues != -1)
846 duparg("numrxqueues", *argv);
847 if (get_integer(&numrxqueues, *argv, 0))
848 invarg("Invalid \"numrxqueues\" value\n",
849 *argv);
850 addattr_l(&req->n, sizeof(*req), IFLA_NUM_RX_QUEUES,
851 &numrxqueues, 4);
852 } else if (matches(*argv, "addrgenmode") == 0) {
853 struct rtattr *afs, *afs6;
854 int mode;
855
856 NEXT_ARG();
857 mode = get_addr_gen_mode(*argv);
858 if (mode < 0)
859 invarg("Invalid address generation mode\n",
860 *argv);
861 afs = addattr_nest(&req->n, sizeof(*req), IFLA_AF_SPEC);
862 afs6 = addattr_nest(&req->n, sizeof(*req), AF_INET6);
863 addattr8(&req->n, sizeof(*req),
864 IFLA_INET6_ADDR_GEN_MODE, mode);
865 addattr_nest_end(&req->n, afs6);
866 addattr_nest_end(&req->n, afs);
867 } else if (matches(*argv, "link-netnsid") == 0) {
868 NEXT_ARG();
869 if (link_netnsid != -1)
870 duparg("link-netnsid", *argv);
871 if (get_integer(&link_netnsid, *argv, 0))
872 invarg("Invalid \"link-netnsid\" value\n",
873 *argv);
874 addattr32(&req->n, sizeof(*req), IFLA_LINK_NETNSID,
875 link_netnsid);
876 } else if (strcmp(*argv, "protodown") == 0) {
877 unsigned int proto_down;
878
879 NEXT_ARG();
880 if (strcmp(*argv, "on") == 0)
881 proto_down = 1;
882 else if (strcmp(*argv, "off") == 0)
883 proto_down = 0;
884 else
885 return on_off("protodown", *argv);
886 addattr8(&req->n, sizeof(*req), IFLA_PROTO_DOWN,
887 proto_down);
888 } else if (strcmp(*argv, "gso_max_size") == 0) {
889 unsigned int max_size;
890
891 NEXT_ARG();
892 if (get_unsigned(&max_size, *argv, 0) ||
893 max_size > GSO_MAX_SIZE)
894 invarg("Invalid \"gso_max_size\" value\n",
895 *argv);
896 addattr32(&req->n, sizeof(*req),
897 IFLA_GSO_MAX_SIZE, max_size);
898 } else if (strcmp(*argv, "gso_max_segs") == 0) {
899 unsigned int max_segs;
900
901 NEXT_ARG();
902 if (get_unsigned(&max_segs, *argv, 0) ||
903 max_segs > GSO_MAX_SEGS)
904 invarg("Invalid \"gso_max_segs\" value\n",
905 *argv);
906 addattr32(&req->n, sizeof(*req),
907 IFLA_GSO_MAX_SEGS, max_segs);
908 } else {
909 if (matches(*argv, "help") == 0)
910 usage();
911
912 if (strcmp(*argv, "dev") == 0)
913 NEXT_ARG();
914 if (dev != name)
915 duparg2("dev", *argv);
916 if (check_ifname(*argv))
917 invarg("\"dev\" not a valid ifname", *argv);
918 dev = *argv;
919 dev_index = ll_name_to_index(dev);
920 }
921 argc--; argv++;
922 }
923
924 ret -= argc;
925
926 /* Allow "ip link add dev" and "ip link add name" */
927 if (!name)
928 name = dev;
929 else if (!dev)
930 dev = name;
931 else if (!strcmp(name, dev))
932 name = dev;
933
934 if (dev_index && addr_len) {
935 int halen = nl_get_ll_addr_len(dev_index);
936
937 if (halen >= 0 && halen != addr_len) {
938 fprintf(stderr,
939 "Invalid address length %d - must be %d bytes\n",
940 addr_len, halen);
941 return -1;
942 }
943 }
944
945 if (!(req->n.nlmsg_flags & NLM_F_CREATE) && index) {
946 fprintf(stderr,
947 "index can be used only when creating devices.\n");
948 exit(-1);
949 }
950
951 if (group != -1) {
952 if (!dev) {
953 if (argc) {
954 fprintf(stderr,
955 "Garbage instead of arguments \"%s ...\". Try \"ip link help\".\n",
956 *argv);
957 exit(-1);
958 }
959 if (req->n.nlmsg_flags & NLM_F_CREATE) {
960 fprintf(stderr,
961 "group cannot be used when creating devices.\n");
962 exit(-1);
963 }
964
965 *type = NULL;
966 return ret;
967 }
968 }
969
970 if (!(req->n.nlmsg_flags & NLM_F_CREATE)) {
971 if (!dev) {
972 fprintf(stderr,
973 "Not enough information: \"dev\" argument is required.\n");
974 exit(-1);
975 }
976
977 req->i.ifi_index = ll_name_to_index(dev);
978 if (!req->i.ifi_index)
979 return nodev(dev);
980
981 /* Not renaming to the same name */
982 if (name == dev)
983 name = NULL;
984 } else {
985 if (name != dev) {
986 fprintf(stderr,
987 "both \"name\" and \"dev\" cannot be used when creating devices.\n");
988 exit(-1);
989 }
990
991 if (link) {
992 int ifindex;
993
994 ifindex = ll_name_to_index(link);
995 if (!ifindex)
996 return nodev(link);
997 addattr32(&req->n, sizeof(*req), IFLA_LINK, ifindex);
998 }
999
1000 req->i.ifi_index = index;
1001 }
1002
1003 if (name) {
1004 addattr_l(&req->n, sizeof(*req),
1005 IFLA_IFNAME, name, strlen(name) + 1);
1006 }
1007
1008 return ret;
1009 }
1010
1011 static int iplink_modify(int cmd, unsigned int flags, int argc, char **argv)
1012 {
1013 char *type = NULL;
1014 struct iplink_req req = {
1015 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
1016 .n.nlmsg_flags = NLM_F_REQUEST | flags,
1017 .n.nlmsg_type = cmd,
1018 .i.ifi_family = preferred_family,
1019 };
1020 int ret;
1021
1022 ret = iplink_parse(argc, argv, &req, &type);
1023 if (ret < 0)
1024 return ret;
1025
1026 if (type) {
1027 struct link_util *lu;
1028 struct rtattr *linkinfo;
1029 char *ulinep = strchr(type, '_');
1030 int iflatype;
1031
1032 linkinfo = addattr_nest(&req.n, sizeof(req), IFLA_LINKINFO);
1033 addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, type,
1034 strlen(type));
1035
1036 lu = get_link_kind(type);
1037 if (ulinep && !strcmp(ulinep, "_slave"))
1038 iflatype = IFLA_INFO_SLAVE_DATA;
1039 else
1040 iflatype = IFLA_INFO_DATA;
1041
1042 argc -= ret;
1043 argv += ret;
1044
1045 if (lu && argc) {
1046 struct rtattr *data;
1047
1048 data = addattr_nest(&req.n, sizeof(req), iflatype);
1049
1050 if (lu->parse_opt &&
1051 lu->parse_opt(lu, argc, argv, &req.n))
1052 return -1;
1053
1054 addattr_nest_end(&req.n, data);
1055 } else if (argc) {
1056 if (matches(*argv, "help") == 0)
1057 usage();
1058 fprintf(stderr,
1059 "Garbage instead of arguments \"%s ...\". Try \"ip link help\".\n",
1060 *argv);
1061 return -1;
1062 }
1063 addattr_nest_end(&req.n, linkinfo);
1064 } else if (flags & NLM_F_CREATE) {
1065 fprintf(stderr,
1066 "Not enough information: \"type\" argument is required\n");
1067 return -1;
1068 }
1069
1070 if (rtnl_talk(&rth, &req.n, NULL) < 0)
1071 return -2;
1072
1073 return 0;
1074 }
1075
1076 int iplink_get(unsigned int flags, char *name, __u32 filt_mask)
1077 {
1078 struct iplink_req req = {
1079 .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
1080 .n.nlmsg_flags = NLM_F_REQUEST | flags,
1081 .n.nlmsg_type = RTM_GETLINK,
1082 .i.ifi_family = preferred_family,
1083 };
1084 struct nlmsghdr *answer;
1085
1086 if (name) {
1087 addattr_l(&req.n, sizeof(req),
1088 IFLA_IFNAME, name, strlen(name) + 1);
1089 }
1090 addattr32(&req.n, sizeof(req), IFLA_EXT_MASK, filt_mask);
1091
1092 if (rtnl_talk(&rth, &req.n, &answer) < 0)
1093 return -2;
1094
1095 open_json_object(NULL);
1096 print_linkinfo(NULL, answer, stdout);
1097 close_json_object();
1098
1099 free(answer);
1100 return 0;
1101 }
1102
1103 #if IPLINK_IOCTL_COMPAT
1104 static int get_ctl_fd(void)
1105 {
1106 int s_errno;
1107 int fd;
1108
1109 fd = socket(PF_INET, SOCK_DGRAM, 0);
1110 if (fd >= 0)
1111 return fd;
1112 s_errno = errno;
1113 fd = socket(PF_PACKET, SOCK_DGRAM, 0);
1114 if (fd >= 0)
1115 return fd;
1116 fd = socket(PF_INET6, SOCK_DGRAM, 0);
1117 if (fd >= 0)
1118 return fd;
1119 errno = s_errno;
1120 perror("Cannot create control socket");
1121 return -1;
1122 }
1123
1124 static int do_chflags(const char *dev, __u32 flags, __u32 mask)
1125 {
1126 struct ifreq ifr;
1127 int fd;
1128 int err;
1129
1130 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
1131 fd = get_ctl_fd();
1132 if (fd < 0)
1133 return -1;
1134 err = ioctl(fd, SIOCGIFFLAGS, &ifr);
1135 if (err) {
1136 perror("SIOCGIFFLAGS");
1137 close(fd);
1138 return -1;
1139 }
1140 if ((ifr.ifr_flags^flags)&mask) {
1141 ifr.ifr_flags &= ~mask;
1142 ifr.ifr_flags |= mask&flags;
1143 err = ioctl(fd, SIOCSIFFLAGS, &ifr);
1144 if (err)
1145 perror("SIOCSIFFLAGS");
1146 }
1147 close(fd);
1148 return err;
1149 }
1150
1151 static int do_changename(const char *dev, const char *newdev)
1152 {
1153 struct ifreq ifr;
1154 int fd;
1155 int err;
1156
1157 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
1158 strncpy(ifr.ifr_newname, newdev, IFNAMSIZ);
1159 fd = get_ctl_fd();
1160 if (fd < 0)
1161 return -1;
1162 err = ioctl(fd, SIOCSIFNAME, &ifr);
1163 if (err) {
1164 perror("SIOCSIFNAME");
1165 close(fd);
1166 return -1;
1167 }
1168 close(fd);
1169 return err;
1170 }
1171
1172 static int set_qlen(const char *dev, int qlen)
1173 {
1174 struct ifreq ifr = { .ifr_qlen = qlen };
1175 int s;
1176
1177 s = get_ctl_fd();
1178 if (s < 0)
1179 return -1;
1180
1181 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
1182 if (ioctl(s, SIOCSIFTXQLEN, &ifr) < 0) {
1183 perror("SIOCSIFXQLEN");
1184 close(s);
1185 return -1;
1186 }
1187 close(s);
1188
1189 return 0;
1190 }
1191
1192 static int set_mtu(const char *dev, int mtu)
1193 {
1194 struct ifreq ifr = { .ifr_mtu = mtu };
1195 int s;
1196
1197 s = get_ctl_fd();
1198 if (s < 0)
1199 return -1;
1200
1201 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
1202 if (ioctl(s, SIOCSIFMTU, &ifr) < 0) {
1203 perror("SIOCSIFMTU");
1204 close(s);
1205 return -1;
1206 }
1207 close(s);
1208
1209 return 0;
1210 }
1211
1212 static int get_address(const char *dev, int *htype)
1213 {
1214 struct ifreq ifr = {};
1215 struct sockaddr_ll me = {
1216 .sll_family = AF_PACKET,
1217 .sll_protocol = htons(ETH_P_LOOP),
1218 };
1219 socklen_t alen;
1220 int s;
1221
1222 s = socket(PF_PACKET, SOCK_DGRAM, 0);
1223 if (s < 0) {
1224 perror("socket(PF_PACKET)");
1225 return -1;
1226 }
1227
1228 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
1229 if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
1230 perror("SIOCGIFINDEX");
1231 close(s);
1232 return -1;
1233 }
1234
1235 me.sll_ifindex = ifr.ifr_ifindex;
1236 if (bind(s, (struct sockaddr *)&me, sizeof(me)) == -1) {
1237 perror("bind");
1238 close(s);
1239 return -1;
1240 }
1241
1242 alen = sizeof(me);
1243 if (getsockname(s, (struct sockaddr *)&me, &alen) == -1) {
1244 perror("getsockname");
1245 close(s);
1246 return -1;
1247 }
1248 close(s);
1249 *htype = me.sll_hatype;
1250 return me.sll_halen;
1251 }
1252
1253 static int parse_address(const char *dev, int hatype, int halen,
1254 char *lla, struct ifreq *ifr)
1255 {
1256 int alen;
1257
1258 memset(ifr, 0, sizeof(*ifr));
1259 strncpy(ifr->ifr_name, dev, IFNAMSIZ);
1260 ifr->ifr_hwaddr.sa_family = hatype;
1261 alen = ll_addr_a2n(ifr->ifr_hwaddr.sa_data, 14, lla);
1262 if (alen < 0)
1263 return -1;
1264 if (alen != halen) {
1265 fprintf(stderr,
1266 "Wrong address (%s) length: expected %d bytes\n",
1267 lla, halen);
1268 return -1;
1269 }
1270 return 0;
1271 }
1272
1273 static int set_address(struct ifreq *ifr, int brd)
1274 {
1275 int s;
1276
1277 s = get_ctl_fd();
1278 if (s < 0)
1279 return -1;
1280 if (ioctl(s, brd?SIOCSIFHWBROADCAST:SIOCSIFHWADDR, ifr) < 0) {
1281 perror(brd?"SIOCSIFHWBROADCAST":"SIOCSIFHWADDR");
1282 close(s);
1283 return -1;
1284 }
1285 close(s);
1286 return 0;
1287 }
1288
1289 static int do_set(int argc, char **argv)
1290 {
1291 char *dev = NULL;
1292 __u32 mask = 0;
1293 __u32 flags = 0;
1294 int qlen = -1;
1295 int mtu = -1;
1296 char *newaddr = NULL;
1297 char *newbrd = NULL;
1298 struct ifreq ifr0, ifr1;
1299 char *newname = NULL;
1300 int htype, halen;
1301
1302 while (argc > 0) {
1303 if (strcmp(*argv, "up") == 0) {
1304 mask |= IFF_UP;
1305 flags |= IFF_UP;
1306 } else if (strcmp(*argv, "down") == 0) {
1307 mask |= IFF_UP;
1308 flags &= ~IFF_UP;
1309 } else if (strcmp(*argv, "name") == 0) {
1310 NEXT_ARG();
1311 if (check_ifname(*argv))
1312 invarg("\"name\" not a valid ifname", *argv);
1313 newname = *argv;
1314 } else if (matches(*argv, "address") == 0) {
1315 NEXT_ARG();
1316 newaddr = *argv;
1317 } else if (matches(*argv, "broadcast") == 0 ||
1318 strcmp(*argv, "brd") == 0) {
1319 NEXT_ARG();
1320 newbrd = *argv;
1321 } else if (matches(*argv, "txqueuelen") == 0 ||
1322 strcmp(*argv, "qlen") == 0 ||
1323 matches(*argv, "txqlen") == 0) {
1324 NEXT_ARG();
1325 if (qlen != -1)
1326 duparg("txqueuelen", *argv);
1327 if (get_integer(&qlen, *argv, 0))
1328 invarg("Invalid \"txqueuelen\" value\n", *argv);
1329 } else if (strcmp(*argv, "mtu") == 0) {
1330 NEXT_ARG();
1331 if (mtu != -1)
1332 duparg("mtu", *argv);
1333 if (get_integer(&mtu, *argv, 0))
1334 invarg("Invalid \"mtu\" value\n", *argv);
1335 } else if (strcmp(*argv, "multicast") == 0) {
1336 NEXT_ARG();
1337 mask |= IFF_MULTICAST;
1338
1339 if (strcmp(*argv, "on") == 0)
1340 flags |= IFF_MULTICAST;
1341 else if (strcmp(*argv, "off") == 0)
1342 flags &= ~IFF_MULTICAST;
1343 else
1344 return on_off("multicast", *argv);
1345 } else if (strcmp(*argv, "allmulticast") == 0) {
1346 NEXT_ARG();
1347 mask |= IFF_ALLMULTI;
1348
1349 if (strcmp(*argv, "on") == 0)
1350 flags |= IFF_ALLMULTI;
1351 else if (strcmp(*argv, "off") == 0)
1352 flags &= ~IFF_ALLMULTI;
1353 else
1354 return on_off("allmulticast", *argv);
1355 } else if (strcmp(*argv, "promisc") == 0) {
1356 NEXT_ARG();
1357 mask |= IFF_PROMISC;
1358
1359 if (strcmp(*argv, "on") == 0)
1360 flags |= IFF_PROMISC;
1361 else if (strcmp(*argv, "off") == 0)
1362 flags &= ~IFF_PROMISC;
1363 else
1364 return on_off("promisc", *argv);
1365 } else if (strcmp(*argv, "trailers") == 0) {
1366 NEXT_ARG();
1367 mask |= IFF_NOTRAILERS;
1368
1369 if (strcmp(*argv, "off") == 0)
1370 flags |= IFF_NOTRAILERS;
1371 else if (strcmp(*argv, "on") == 0)
1372 flags &= ~IFF_NOTRAILERS;
1373 else
1374 return on_off("trailers", *argv);
1375 } else if (strcmp(*argv, "arp") == 0) {
1376 NEXT_ARG();
1377 mask |= IFF_NOARP;
1378
1379 if (strcmp(*argv, "on") == 0)
1380 flags &= ~IFF_NOARP;
1381 else if (strcmp(*argv, "off") == 0)
1382 flags |= IFF_NOARP;
1383 else
1384 return on_off("arp", *argv);
1385 } else if (matches(*argv, "dynamic") == 0) {
1386 NEXT_ARG();
1387 mask |= IFF_DYNAMIC;
1388
1389 if (strcmp(*argv, "on") == 0)
1390 flags |= IFF_DYNAMIC;
1391 else if (strcmp(*argv, "off") == 0)
1392 flags &= ~IFF_DYNAMIC;
1393 else
1394 return on_off("dynamic", *argv);
1395 } else {
1396 if (strcmp(*argv, "dev") == 0)
1397 NEXT_ARG();
1398 else if (matches(*argv, "help") == 0)
1399 usage();
1400
1401 if (dev)
1402 duparg2("dev", *argv);
1403 if (check_ifname(*argv))
1404 invarg("\"dev\" not a valid ifname", *argv);
1405 dev = *argv;
1406 }
1407 argc--; argv++;
1408 }
1409
1410 if (!dev) {
1411 fprintf(stderr,
1412 "Not enough of information: \"dev\" argument is required.\n");
1413 exit(-1);
1414 }
1415
1416 if (newaddr || newbrd) {
1417 halen = get_address(dev, &htype);
1418 if (halen < 0)
1419 return -1;
1420 if (newaddr) {
1421 if (parse_address(dev, htype, halen,
1422 newaddr, &ifr0) < 0)
1423 return -1;
1424 }
1425 if (newbrd) {
1426 if (parse_address(dev, htype, halen,
1427 newbrd, &ifr1) < 0)
1428 return -1;
1429 }
1430 }
1431
1432 if (newname && strcmp(dev, newname)) {
1433 if (do_changename(dev, newname) < 0)
1434 return -1;
1435 dev = newname;
1436 }
1437 if (qlen != -1) {
1438 if (set_qlen(dev, qlen) < 0)
1439 return -1;
1440 }
1441 if (mtu != -1) {
1442 if (set_mtu(dev, mtu) < 0)
1443 return -1;
1444 }
1445 if (newaddr || newbrd) {
1446 if (newbrd) {
1447 if (set_address(&ifr1, 1) < 0)
1448 return -1;
1449 }
1450 if (newaddr) {
1451 if (set_address(&ifr0, 0) < 0)
1452 return -1;
1453 }
1454 }
1455 if (mask)
1456 return do_chflags(dev, flags, mask);
1457 return 0;
1458 }
1459 #endif /* IPLINK_IOCTL_COMPAT */
1460
1461 static void print_mpls_stats(FILE *fp, struct rtattr *attr)
1462 {
1463 struct rtattr *mrtb[MPLS_STATS_MAX+1];
1464 struct mpls_link_stats *stats;
1465
1466 parse_rtattr(mrtb, MPLS_STATS_MAX, RTA_DATA(attr),
1467 RTA_PAYLOAD(attr));
1468 if (!mrtb[MPLS_STATS_LINK])
1469 return;
1470
1471 stats = RTA_DATA(mrtb[MPLS_STATS_LINK]);
1472
1473 fprintf(fp, " mpls:\n");
1474 fprintf(fp, " RX: bytes packets errors dropped noroute\n");
1475 fprintf(fp, " ");
1476 print_num(fp, 10, stats->rx_bytes);
1477 print_num(fp, 8, stats->rx_packets);
1478 print_num(fp, 7, stats->rx_errors);
1479 print_num(fp, 8, stats->rx_dropped);
1480 print_num(fp, 7, stats->rx_noroute);
1481 fprintf(fp, "\n");
1482 fprintf(fp, " TX: bytes packets errors dropped\n");
1483 fprintf(fp, " ");
1484 print_num(fp, 10, stats->tx_bytes);
1485 print_num(fp, 8, stats->tx_packets);
1486 print_num(fp, 7, stats->tx_errors);
1487 print_num(fp, 7, stats->tx_dropped);
1488 fprintf(fp, "\n");
1489 }
1490
1491 static void print_af_stats_attr(FILE *fp, int ifindex, struct rtattr *attr)
1492 {
1493 bool if_printed = false;
1494 struct rtattr *i;
1495 int rem;
1496
1497 rem = RTA_PAYLOAD(attr);
1498 for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
1499 if (preferred_family != AF_UNSPEC &&
1500 i->rta_type != preferred_family)
1501 continue;
1502
1503 if (!if_printed) {
1504 fprintf(fp, "%u: %s\n", ifindex,
1505 ll_index_to_name(ifindex));
1506 if_printed = true;
1507 }
1508
1509 switch (i->rta_type) {
1510 case AF_MPLS:
1511 print_mpls_stats(fp, i);
1512 break;
1513 default:
1514 fprintf(fp, " unknown af(%d)\n", i->rta_type);
1515 break;
1516 }
1517 }
1518 }
1519
1520 struct af_stats_ctx {
1521 FILE *fp;
1522 int ifindex;
1523 };
1524
1525 static int print_af_stats(const struct sockaddr_nl *who,
1526 struct nlmsghdr *n,
1527 void *arg)
1528 {
1529 struct if_stats_msg *ifsm = NLMSG_DATA(n);
1530 struct rtattr *tb[IFLA_STATS_MAX+1];
1531 int len = n->nlmsg_len;
1532 struct af_stats_ctx *ctx = arg;
1533 FILE *fp = ctx->fp;
1534
1535 len -= NLMSG_LENGTH(sizeof(*ifsm));
1536 if (len < 0) {
1537 fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
1538 return -1;
1539 }
1540
1541 if (ctx->ifindex && ifsm->ifindex != ctx->ifindex)
1542 return 0;
1543
1544 parse_rtattr(tb, IFLA_STATS_MAX, IFLA_STATS_RTA(ifsm), len);
1545
1546 if (tb[IFLA_STATS_AF_SPEC])
1547 print_af_stats_attr(fp, ifsm->ifindex, tb[IFLA_STATS_AF_SPEC]);
1548
1549 fflush(fp);
1550 return 0;
1551 }
1552
1553 static int iplink_afstats(int argc, char **argv)
1554 {
1555 __u32 filt_mask = IFLA_STATS_FILTER_BIT(IFLA_STATS_AF_SPEC);
1556 const char *filter_dev = NULL;
1557 struct af_stats_ctx ctx = {
1558 .fp = stdout,
1559 .ifindex = 0,
1560 };
1561
1562 while (argc > 0) {
1563 if (strcmp(*argv, "dev") == 0) {
1564 NEXT_ARG();
1565 if (filter_dev)
1566 duparg2("dev", *argv);
1567 filter_dev = *argv;
1568 } else if (matches(*argv, "help") == 0) {
1569 usage();
1570 } else {
1571 fprintf(stderr,
1572 "Command \"%s\" is unknown, try \"ip link help\".\n",
1573 *argv);
1574 exit(-1);
1575 }
1576
1577 argv++; argc--;
1578 }
1579
1580 if (filter_dev) {
1581 ctx.ifindex = ll_name_to_index(filter_dev);
1582 if (ctx.ifindex <= 0) {
1583 fprintf(stderr,
1584 "Device \"%s\" does not exist.\n",
1585 filter_dev);
1586 return -1;
1587 }
1588 }
1589
1590 if (rtnl_wilddump_stats_req_filter(&rth, AF_UNSPEC,
1591 RTM_GETSTATS,
1592 filt_mask) < 0) {
1593 perror("Cannont send dump request");
1594 return 1;
1595 }
1596
1597 if (rtnl_dump_filter(&rth, print_af_stats, &ctx) < 0) {
1598 fprintf(stderr, "Dump terminated\n");
1599 return 1;
1600 }
1601
1602 return 0;
1603 }
1604
1605 static void do_help(int argc, char **argv)
1606 {
1607 struct link_util *lu = NULL;
1608
1609 if (argc <= 0) {
1610 usage();
1611 return;
1612 }
1613
1614 lu = get_link_kind(*argv);
1615 if (lu && lu->print_help)
1616 lu->print_help(lu, argc-1, argv+1, stdout);
1617 else
1618 usage();
1619 }
1620
1621 int do_iplink(int argc, char **argv)
1622 {
1623 if (argc < 1)
1624 return ipaddr_list_link(0, NULL);
1625
1626 if (iplink_have_newlink()) {
1627 if (matches(*argv, "add") == 0)
1628 return iplink_modify(RTM_NEWLINK,
1629 NLM_F_CREATE|NLM_F_EXCL,
1630 argc-1, argv+1);
1631 if (matches(*argv, "set") == 0 ||
1632 matches(*argv, "change") == 0)
1633 return iplink_modify(RTM_NEWLINK, 0,
1634 argc-1, argv+1);
1635 if (matches(*argv, "replace") == 0)
1636 return iplink_modify(RTM_NEWLINK,
1637 NLM_F_CREATE|NLM_F_REPLACE,
1638 argc-1, argv+1);
1639 if (matches(*argv, "delete") == 0)
1640 return iplink_modify(RTM_DELLINK, 0,
1641 argc-1, argv+1);
1642 } else {
1643 #if IPLINK_IOCTL_COMPAT
1644 if (matches(*argv, "set") == 0)
1645 return do_set(argc-1, argv+1);
1646 #endif
1647 }
1648
1649 if (matches(*argv, "show") == 0 ||
1650 matches(*argv, "lst") == 0 ||
1651 matches(*argv, "list") == 0)
1652 return ipaddr_list_link(argc-1, argv+1);
1653
1654 if (matches(*argv, "xstats") == 0)
1655 return iplink_ifla_xstats(argc-1, argv+1);
1656
1657 if (matches(*argv, "afstats") == 0) {
1658 iplink_afstats(argc-1, argv+1);
1659 return 0;
1660 }
1661
1662 if (matches(*argv, "help") == 0) {
1663 do_help(argc-1, argv+1);
1664 return 0;
1665 }
1666
1667 fprintf(stderr, "Command \"%s\" is unknown, try \"ip link help\".\n",
1668 *argv);
1669 exit(-1);
1670 }
Upstream mirror of iproute2