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.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
20 #include <sys/socket.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>
28 #include <sys/ioctl.h>
29 #include <linux/sockios.h>
33 #include "ip_common.h"
35 #define IPLINK_IOCTL_COMPAT 1
37 #define LIBDIR "/usr/lib/"
40 static void usage(void) __attribute__((noreturn));
41 static int iplink_have_newlink(void);
43 void iplink_usage(void)
45 if (iplink_have_newlink()) {
46 fprintf(stderr, "Usage: ip link add [link DEV] [ name ] NAME\n");
47 fprintf(stderr, " [ txqueuelen PACKETS ]\n");
48 fprintf(stderr, " [ address LLADDR ]\n");
49 fprintf(stderr, " [ broadcast LLADDR ]\n");
50 fprintf(stderr, " [ mtu MTU ]\n");
51 fprintf(stderr, " type TYPE [ ARGS ]\n");
52 fprintf(stderr, " ip link delete DEV type TYPE [ ARGS ]\n");
53 fprintf(stderr, "\n");
54 fprintf(stderr, " ip link set { dev DEVICE | group DEVGROUP } [ { up | down } ]\n");
56 fprintf(stderr, "Usage: ip link set DEVICE [ { up | down } ]\n");
58 fprintf(stderr, " [ arp { on | off } ]\n");
59 fprintf(stderr, " [ dynamic { on | off } ]\n");
60 fprintf(stderr, " [ multicast { on | off } ]\n");
61 fprintf(stderr, " [ allmulticast { on | off } ]\n");
62 fprintf(stderr, " [ promisc { on | off } ]\n");
63 fprintf(stderr, " [ trailers { on | off } ]\n");
64 fprintf(stderr, " [ txqueuelen PACKETS ]\n");
65 fprintf(stderr, " [ name NEWNAME ]\n");
66 fprintf(stderr, " [ address LLADDR ]\n");
67 fprintf(stderr, " [ broadcast LLADDR ]\n");
68 fprintf(stderr, " [ mtu MTU ]\n");
69 fprintf(stderr, " [ netns PID ]\n");
70 fprintf(stderr, " [ netns NAME ]\n");
71 fprintf(stderr, " [ alias NAME ]\n");
72 fprintf(stderr, " [ vf NUM [ mac LLADDR ]\n");
73 fprintf(stderr, " [ vlan VLANID [ qos VLAN-QOS ] ]\n");
75 fprintf(stderr, " [ rate TXRATE ] ] \n");
77 fprintf(stderr, " [ spoofchk { on | off} ] ] \n");
78 fprintf(stderr, " [ master DEVICE ]\n");
79 fprintf(stderr, " [ nomaster ]\n");
80 fprintf(stderr, " ip link show [ DEVICE | group GROUP ]\n");
82 if (iplink_have_newlink()) {
83 fprintf(stderr, "\n");
84 fprintf(stderr, "TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | can | bridge }\n");
89 static void usage(void)
94 static int on_off(char *msg)
96 fprintf(stderr, "Error: argument of \"%s\" must be \"on\" or \"off\"\n", msg);
100 static void *BODY; /* cached dlopen(NULL) handle */
101 static struct link_util *linkutil_list;
103 struct link_util *get_link_kind(const char *id)
109 for (l = linkutil_list; l; l = l->next)
110 if (strcmp(l->id, id) == 0)
113 snprintf(buf, sizeof(buf), LIBDIR "/ip/link_%s.so", id);
114 dlh = dlopen(buf, RTLD_LAZY);
116 /* look in current binary, only open once */
119 dlh = BODY = dlopen(NULL, RTLD_LAZY);
125 snprintf(buf, sizeof(buf), "%s_link_util", id);
130 l->next = linkutil_list;
135 int get_link_mode(const char *mode)
137 if (strcasecmp(mode, "default") == 0)
138 return IF_LINK_MODE_DEFAULT;
139 if (strcasecmp(mode, "dormant") == 0)
140 return IF_LINK_MODE_DORMANT;
144 #if IPLINK_IOCTL_COMPAT
145 static int have_rtnl_newlink = -1;
147 static int accept_msg(const struct sockaddr_nl *who,
148 struct nlmsghdr *n, void *arg)
150 struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(n);
152 if (n->nlmsg_type == NLMSG_ERROR &&
153 (err->error == -EOPNOTSUPP || err->error == -EINVAL))
154 have_rtnl_newlink = 0;
156 have_rtnl_newlink = 1;
160 static int iplink_have_newlink(void)
168 if (have_rtnl_newlink < 0) {
169 memset(&req, 0, sizeof(req));
171 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
172 req.n.nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK;
173 req.n.nlmsg_type = RTM_NEWLINK;
174 req.i.ifi_family = AF_UNSPEC;
176 rtnl_send(&rth, &req.n, req.n.nlmsg_len);
177 rtnl_listen(&rth, accept_msg, NULL);
179 return have_rtnl_newlink;
181 #else /* IPLINK_IOCTL_COMPAT */
182 static int iplink_have_newlink(void)
186 #endif /* ! IPLINK_IOCTL_COMPAT */
194 int iplink_parse_vf(int vf, int *argcp, char ***argvp,
195 struct iplink_req *req)
197 int len, argc = *argcp;
198 char **argv = *argvp;
199 struct rtattr *vfinfo;
201 vfinfo = addattr_nest(&req->n, sizeof(*req), IFLA_VF_INFO);
203 while (NEXT_ARG_OK()) {
205 if (matches(*argv, "mac") == 0) {
206 struct ifla_vf_mac ivm;
209 len = ll_addr_a2n((char *)ivm.mac, 32, *argv);
212 addattr_l(&req->n, sizeof(*req), IFLA_VF_MAC, &ivm, sizeof(ivm));
213 } else if (matches(*argv, "vlan") == 0) {
214 struct ifla_vf_vlan ivv;
216 if (get_unsigned(&ivv.vlan, *argv, 0)) {
217 invarg("Invalid \"vlan\" value\n", *argv);
223 if (matches(*argv, "qos") == 0) {
225 if (get_unsigned(&ivv.qos, *argv, 0)) {
226 invarg("Invalid \"qos\" value\n", *argv);
233 addattr_l(&req->n, sizeof(*req), IFLA_VF_VLAN, &ivv, sizeof(ivv));
234 } else if (matches(*argv, "rate") == 0) {
235 struct ifla_vf_tx_rate ivt;
237 if (get_unsigned(&ivt.rate, *argv, 0)) {
238 invarg("Invalid \"rate\" value\n", *argv);
241 addattr_l(&req->n, sizeof(*req), IFLA_VF_TX_RATE, &ivt, sizeof(ivt));
243 } else if (matches(*argv, "spoofchk") == 0) {
244 struct ifla_vf_spoofchk ivs;
246 if (matches(*argv, "on") == 0)
248 else if (matches(*argv, "off") == 0)
251 invarg("Invalid \"spoofchk\" value\n", *argv);
253 addattr_l(&req->n, sizeof(*req), IFLA_VF_SPOOFCHK, &ivs, sizeof(ivs));
263 incomplete_command();
265 addattr_nest_end(&req->n, vfinfo);
273 int iplink_parse(int argc, char **argv, struct iplink_req *req,
274 char **name, char **type, char **link, char **dev, int *group)
287 if (strcmp(*argv, "up") == 0) {
288 req->i.ifi_change |= IFF_UP;
289 req->i.ifi_flags |= IFF_UP;
290 } else if (strcmp(*argv, "down") == 0) {
291 req->i.ifi_change |= IFF_UP;
292 req->i.ifi_flags &= ~IFF_UP;
293 } else if (strcmp(*argv, "name") == 0) {
296 } else if (matches(*argv, "link") == 0) {
299 } else if (matches(*argv, "address") == 0) {
301 len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
304 addattr_l(&req->n, sizeof(*req), IFLA_ADDRESS, abuf, len);
305 } else if (matches(*argv, "broadcast") == 0 ||
306 strcmp(*argv, "brd") == 0) {
308 len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
311 addattr_l(&req->n, sizeof(*req), IFLA_BROADCAST, abuf, len);
312 } else if (matches(*argv, "txqueuelen") == 0 ||
313 strcmp(*argv, "qlen") == 0 ||
314 matches(*argv, "txqlen") == 0) {
317 duparg("txqueuelen", *argv);
318 if (get_integer(&qlen, *argv, 0))
319 invarg("Invalid \"txqueuelen\" value\n", *argv);
320 addattr_l(&req->n, sizeof(*req), IFLA_TXQLEN, &qlen, 4);
321 } else if (strcmp(*argv, "mtu") == 0) {
324 duparg("mtu", *argv);
325 if (get_integer(&mtu, *argv, 0))
326 invarg("Invalid \"mtu\" value\n", *argv);
327 addattr_l(&req->n, sizeof(*req), IFLA_MTU, &mtu, 4);
328 } else if (strcmp(*argv, "netns") == 0) {
331 duparg("netns", *argv);
332 if ((netns = get_netns_fd(*argv)) >= 0)
333 addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_FD, &netns, 4);
334 else if (get_integer(&netns, *argv, 0) == 0)
335 addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_PID, &netns, 4);
337 invarg("Invalid \"netns\" value\n", *argv);
338 } else if (strcmp(*argv, "multicast") == 0) {
340 req->i.ifi_change |= IFF_MULTICAST;
341 if (strcmp(*argv, "on") == 0) {
342 req->i.ifi_flags |= IFF_MULTICAST;
343 } else if (strcmp(*argv, "off") == 0) {
344 req->i.ifi_flags &= ~IFF_MULTICAST;
346 return on_off("multicast");
347 } else if (strcmp(*argv, "allmulticast") == 0) {
349 req->i.ifi_change |= IFF_ALLMULTI;
350 if (strcmp(*argv, "on") == 0) {
351 req->i.ifi_flags |= IFF_ALLMULTI;
352 } else if (strcmp(*argv, "off") == 0) {
353 req->i.ifi_flags &= ~IFF_ALLMULTI;
355 return on_off("allmulticast");
356 } else if (strcmp(*argv, "promisc") == 0) {
358 req->i.ifi_change |= IFF_PROMISC;
359 if (strcmp(*argv, "on") == 0) {
360 req->i.ifi_flags |= IFF_PROMISC;
361 } else if (strcmp(*argv, "off") == 0) {
362 req->i.ifi_flags &= ~IFF_PROMISC;
364 return on_off("promisc");
365 } else if (strcmp(*argv, "trailers") == 0) {
367 req->i.ifi_change |= IFF_NOTRAILERS;
368 if (strcmp(*argv, "off") == 0) {
369 req->i.ifi_flags |= IFF_NOTRAILERS;
370 } else if (strcmp(*argv, "on") == 0) {
371 req->i.ifi_flags &= ~IFF_NOTRAILERS;
373 return on_off("trailers");
374 } else if (strcmp(*argv, "arp") == 0) {
376 req->i.ifi_change |= IFF_NOARP;
377 if (strcmp(*argv, "on") == 0) {
378 req->i.ifi_flags &= ~IFF_NOARP;
379 } else if (strcmp(*argv, "off") == 0) {
380 req->i.ifi_flags |= IFF_NOARP;
382 return on_off("noarp");
383 } else if (strcmp(*argv, "vf") == 0) {
384 struct rtattr *vflist;
386 if (get_integer(&vf, *argv, 0)) {
387 invarg("Invalid \"vf\" value\n", *argv);
389 vflist = addattr_nest(&req->n, sizeof(*req),
391 len = iplink_parse_vf(vf, &argc, &argv, req);
394 addattr_nest_end(&req->n, vflist);
395 } else if (matches(*argv, "master") == 0) {
398 ifindex = ll_name_to_index(*argv);
400 invarg("Device does not exist\n", *argv);
401 addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
403 } else if (matches(*argv, "nomaster") == 0) {
405 addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
407 } else if (matches(*argv, "dynamic") == 0) {
409 req->i.ifi_change |= IFF_DYNAMIC;
410 if (strcmp(*argv, "on") == 0) {
411 req->i.ifi_flags |= IFF_DYNAMIC;
412 } else if (strcmp(*argv, "off") == 0) {
413 req->i.ifi_flags &= ~IFF_DYNAMIC;
415 return on_off("dynamic");
416 } else if (matches(*argv, "type") == 0) {
421 } else if (matches(*argv, "alias") == 0) {
423 addattr_l(&req->n, sizeof(*req), IFLA_IFALIAS,
424 *argv, strlen(*argv));
427 } else if (strcmp(*argv, "group") == 0) {
430 duparg("group", *argv);
431 if (rtnl_group_a2n(group, *argv))
432 invarg("Invalid \"group\" value\n", *argv);
433 } else if (strcmp(*argv, "mode") == 0) {
436 mode = get_link_mode(*argv);
438 invarg("Invalid link mode\n", *argv);
439 addattr8(&req->n, sizeof(*req), IFLA_LINKMODE, mode);
440 } else if (strcmp(*argv, "state") == 0) {
443 state = get_operstate(*argv);
445 invarg("Invalid operstate\n", *argv);
447 addattr8(&req->n, sizeof(*req), IFLA_OPERSTATE, state);
449 if (strcmp(*argv, "dev") == 0) {
452 if (matches(*argv, "help") == 0)
455 duparg2("dev", *argv);
464 static int iplink_modify(int cmd, unsigned int flags, int argc, char **argv)
472 struct link_util *lu = NULL;
473 struct iplink_req req;
476 memset(&req, 0, sizeof(req));
478 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
479 req.n.nlmsg_flags = NLM_F_REQUEST|flags;
480 req.n.nlmsg_type = cmd;
481 req.i.ifi_family = preferred_family;
483 ret = iplink_parse(argc, argv, &req, &name, &type, &link, &dev, &group);
492 addattr_l(&req.n, sizeof(req), IFLA_GROUP,
493 &group, sizeof(group));
496 fprintf(stderr, "Garbage instead of arguments "
497 "\"%s ...\". Try \"ip link "
501 if (flags & NLM_F_CREATE) {
502 fprintf(stderr, "group cannot be used when "
503 "creating devices.\n");
508 addattr32(&req.n, sizeof(req), IFLA_GROUP, group);
509 if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
517 if (!(flags & NLM_F_CREATE)) {
519 fprintf(stderr, "Not enough information: \"dev\" "
520 "argument is required.\n");
524 req.i.ifi_index = ll_name_to_index(dev);
525 if (req.i.ifi_index == 0) {
526 fprintf(stderr, "Cannot find device \"%s\"\n", dev);
530 /* Allow "ip link add dev" and "ip link add name" */
537 ifindex = ll_name_to_index(link);
539 fprintf(stderr, "Cannot find device \"%s\"\n",
543 addattr_l(&req.n, sizeof(req), IFLA_LINK, &ifindex, 4);
548 len = strlen(name) + 1;
550 invarg("\"\" is not a valid device identifier\n", "name");
552 invarg("\"name\" too long\n", name);
553 addattr_l(&req.n, sizeof(req), IFLA_IFNAME, name, len);
557 struct rtattr *linkinfo = NLMSG_TAIL(&req.n);
558 addattr_l(&req.n, sizeof(req), IFLA_LINKINFO, NULL, 0);
559 addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, type,
562 lu = get_link_kind(type);
564 struct rtattr * data = NLMSG_TAIL(&req.n);
565 addattr_l(&req.n, sizeof(req), IFLA_INFO_DATA, NULL, 0);
568 lu->parse_opt(lu, argc, argv, &req.n))
571 data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;
573 if (matches(*argv, "help") == 0)
575 fprintf(stderr, "Garbage instead of arguments \"%s ...\". "
576 "Try \"ip link help\".\n", *argv);
579 linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo;
580 } else if (flags & NLM_F_CREATE) {
581 fprintf(stderr, "Not enough information: \"type\" argument "
586 if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
592 #if IPLINK_IOCTL_COMPAT
593 static int get_ctl_fd(void)
598 fd = socket(PF_INET, SOCK_DGRAM, 0);
602 fd = socket(PF_PACKET, SOCK_DGRAM, 0);
605 fd = socket(PF_INET6, SOCK_DGRAM, 0);
609 perror("Cannot create control socket");
613 static int do_chflags(const char *dev, __u32 flags, __u32 mask)
619 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
623 err = ioctl(fd, SIOCGIFFLAGS, &ifr);
625 perror("SIOCGIFFLAGS");
629 if ((ifr.ifr_flags^flags)&mask) {
630 ifr.ifr_flags &= ~mask;
631 ifr.ifr_flags |= mask&flags;
632 err = ioctl(fd, SIOCSIFFLAGS, &ifr);
634 perror("SIOCSIFFLAGS");
640 static int do_changename(const char *dev, const char *newdev)
646 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
647 strncpy(ifr.ifr_newname, newdev, IFNAMSIZ);
651 err = ioctl(fd, SIOCSIFNAME, &ifr);
653 perror("SIOCSIFNAME");
661 static int set_qlen(const char *dev, int qlen)
670 memset(&ifr, 0, sizeof(ifr));
671 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
673 if (ioctl(s, SIOCSIFTXQLEN, &ifr) < 0) {
674 perror("SIOCSIFXQLEN");
683 static int set_mtu(const char *dev, int mtu)
692 memset(&ifr, 0, sizeof(ifr));
693 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
695 if (ioctl(s, SIOCSIFMTU, &ifr) < 0) {
696 perror("SIOCSIFMTU");
705 static int get_address(const char *dev, int *htype)
708 struct sockaddr_ll me;
712 s = socket(PF_PACKET, SOCK_DGRAM, 0);
714 perror("socket(PF_PACKET)");
718 memset(&ifr, 0, sizeof(ifr));
719 strncpy(ifr.ifr_name, dev, IFNAMSIZ);
720 if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
721 perror("SIOCGIFINDEX");
726 memset(&me, 0, sizeof(me));
727 me.sll_family = AF_PACKET;
728 me.sll_ifindex = ifr.ifr_ifindex;
729 me.sll_protocol = htons(ETH_P_LOOP);
730 if (bind(s, (struct sockaddr*)&me, sizeof(me)) == -1) {
737 if (getsockname(s, (struct sockaddr*)&me, &alen) == -1) {
738 perror("getsockname");
743 *htype = me.sll_hatype;
747 static int parse_address(const char *dev, int hatype, int halen,
748 char *lla, struct ifreq *ifr)
752 memset(ifr, 0, sizeof(*ifr));
753 strncpy(ifr->ifr_name, dev, IFNAMSIZ);
754 ifr->ifr_hwaddr.sa_family = hatype;
755 alen = ll_addr_a2n(ifr->ifr_hwaddr.sa_data, 14, lla);
759 fprintf(stderr, "Wrong address (%s) length: expected %d bytes\n", lla, halen);
765 static int set_address(struct ifreq *ifr, int brd)
772 if (ioctl(s, brd?SIOCSIFHWBROADCAST:SIOCSIFHWADDR, ifr) < 0) {
773 perror(brd?"SIOCSIFHWBROADCAST":"SIOCSIFHWADDR");
782 static int do_set(int argc, char **argv)
789 char *newaddr = NULL;
791 struct ifreq ifr0, ifr1;
792 char *newname = NULL;
796 if (strcmp(*argv, "up") == 0) {
799 } else if (strcmp(*argv, "down") == 0) {
802 } else if (strcmp(*argv, "name") == 0) {
805 } else if (matches(*argv, "address") == 0) {
808 } else if (matches(*argv, "broadcast") == 0 ||
809 strcmp(*argv, "brd") == 0) {
812 } else if (matches(*argv, "txqueuelen") == 0 ||
813 strcmp(*argv, "qlen") == 0 ||
814 matches(*argv, "txqlen") == 0) {
817 duparg("txqueuelen", *argv);
818 if (get_integer(&qlen, *argv, 0))
819 invarg("Invalid \"txqueuelen\" value\n", *argv);
820 } else if (strcmp(*argv, "mtu") == 0) {
823 duparg("mtu", *argv);
824 if (get_integer(&mtu, *argv, 0))
825 invarg("Invalid \"mtu\" value\n", *argv);
826 } else if (strcmp(*argv, "multicast") == 0) {
828 mask |= IFF_MULTICAST;
829 if (strcmp(*argv, "on") == 0) {
830 flags |= IFF_MULTICAST;
831 } else if (strcmp(*argv, "off") == 0) {
832 flags &= ~IFF_MULTICAST;
834 return on_off("multicast");
835 } else if (strcmp(*argv, "allmulticast") == 0) {
837 mask |= IFF_ALLMULTI;
838 if (strcmp(*argv, "on") == 0) {
839 flags |= IFF_ALLMULTI;
840 } else if (strcmp(*argv, "off") == 0) {
841 flags &= ~IFF_ALLMULTI;
843 return on_off("allmulticast");
844 } else if (strcmp(*argv, "promisc") == 0) {
847 if (strcmp(*argv, "on") == 0) {
848 flags |= IFF_PROMISC;
849 } else if (strcmp(*argv, "off") == 0) {
850 flags &= ~IFF_PROMISC;
852 return on_off("promisc");
853 } else if (strcmp(*argv, "trailers") == 0) {
855 mask |= IFF_NOTRAILERS;
856 if (strcmp(*argv, "off") == 0) {
857 flags |= IFF_NOTRAILERS;
858 } else if (strcmp(*argv, "on") == 0) {
859 flags &= ~IFF_NOTRAILERS;
861 return on_off("trailers");
862 } else if (strcmp(*argv, "arp") == 0) {
865 if (strcmp(*argv, "on") == 0) {
867 } else if (strcmp(*argv, "off") == 0) {
870 return on_off("noarp");
871 } else if (matches(*argv, "dynamic") == 0) {
874 if (strcmp(*argv, "on") == 0) {
875 flags |= IFF_DYNAMIC;
876 } else if (strcmp(*argv, "off") == 0) {
877 flags &= ~IFF_DYNAMIC;
879 return on_off("dynamic");
881 if (strcmp(*argv, "dev") == 0) {
884 if (matches(*argv, "help") == 0)
887 duparg2("dev", *argv);
894 fprintf(stderr, "Not enough of information: \"dev\" argument is required.\n");
898 if (newaddr || newbrd) {
899 halen = get_address(dev, &htype);
903 if (parse_address(dev, htype, halen, newaddr, &ifr0) < 0)
907 if (parse_address(dev, htype, halen, newbrd, &ifr1) < 0)
912 if (newname && strcmp(dev, newname)) {
913 if (strlen(newname) == 0)
914 invarg("\"\" is not a valid device identifier\n", "name");
915 if (do_changename(dev, newname) < 0)
920 if (set_qlen(dev, qlen) < 0)
924 if (set_mtu(dev, mtu) < 0)
927 if (newaddr || newbrd) {
929 if (set_address(&ifr1, 1) < 0)
933 if (set_address(&ifr0, 0) < 0)
938 return do_chflags(dev, flags, mask);
941 #endif /* IPLINK_IOCTL_COMPAT */
943 int do_iplink(int argc, char **argv)
946 if (iplink_have_newlink()) {
947 if (matches(*argv, "add") == 0)
948 return iplink_modify(RTM_NEWLINK,
949 NLM_F_CREATE|NLM_F_EXCL,
951 if (matches(*argv, "set") == 0 ||
952 matches(*argv, "change") == 0)
953 return iplink_modify(RTM_NEWLINK, 0,
955 if (matches(*argv, "replace") == 0)
956 return iplink_modify(RTM_NEWLINK,
957 NLM_F_CREATE|NLM_F_REPLACE,
959 if (matches(*argv, "delete") == 0)
960 return iplink_modify(RTM_DELLINK, 0,
963 #if IPLINK_IOCTL_COMPAT
964 if (matches(*argv, "set") == 0)
965 return do_set(argc-1, argv+1);
968 if (matches(*argv, "show") == 0 ||
969 matches(*argv, "lst") == 0 ||
970 matches(*argv, "list") == 0)
971 return ipaddr_list_link(argc-1, argv+1);
972 if (matches(*argv, "help") == 0)
975 return ipaddr_list_link(0, NULL);
977 fprintf(stderr, "Command \"%s\" is unknown, try \"ip link help\".\n", *argv);