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8#include <net/if.h>
9
10#include <netpacket/packet.h>
11#include <netinet/if_ether.h>
12
13#include <linux/if_vlan.h>
14#include "ip_common.h"
15#include "rt_names.h"
16#include "utils.h"
17
18#undef ETH_P_8021AD
19#define ETH_P_8021AD 0x88A8
20#undef VLAN_FLAG_REORDER_HDR
21#define VLAN_FLAG_REORDER_HDR 0x1
22#undef VLAN_FLAG_GVRP
23#define VLAN_FLAG_GVRP 0x2
24#undef VLAN_FLAG_LOOSE_BINDING
25#define VLAN_FLAG_LOOSE_BINDING 0x4
26#undef VLAN_FLAG_MVRP
27#define VLAN_FLAG_MVRP 0x8
28#undef IFLA_VLAN_PROTOCOL
29#define IFLA_VLAN_PROTOCOL 5
30
31#ifndef IFLA_LINKINFO
32# define IFLA_LINKINFO 18
33# define IFLA_INFO_KIND 1
34# define IFLA_INFO_DATA 2
35#endif
36
37#ifndef IFLA_VLAN_MAX
38# define IFLA_VLAN_ID 1
39# define IFLA_VLAN_FLAGS 2
40struct ifla_vlan_flags {
41 uint32_t flags;
42 uint32_t mask;
43};
44#endif
45
46
47#define SIOCSIFNAME 0x8923
48
49#if 0
50# define dbg(...) bb_error_msg(__VA_ARGS__)
51#else
52# define dbg(...) ((void)0)
53#endif
54
55
56#define str_on_off "on\0""off\0"
57
58
59static int get_ctl_fd(void)
60{
61 int fd;
62
63 fd = socket(PF_INET, SOCK_DGRAM, 0);
64 if (fd >= 0)
65 return fd;
66 fd = socket(PF_PACKET, SOCK_DGRAM, 0);
67 if (fd >= 0)
68 return fd;
69 return xsocket(PF_INET6, SOCK_DGRAM, 0);
70}
71
72
73static void do_chflags(char *dev, uint32_t flags, uint32_t mask)
74{
75 struct ifreq ifr;
76 int fd;
77
78 strncpy_IFNAMSIZ(ifr.ifr_name, dev);
79 fd = get_ctl_fd();
80 xioctl(fd, SIOCGIFFLAGS, &ifr);
81 if ((ifr.ifr_flags ^ flags) & mask) {
82 ifr.ifr_flags &= ~mask;
83 ifr.ifr_flags |= mask & flags;
84 xioctl(fd, SIOCSIFFLAGS, &ifr);
85 }
86 close(fd);
87}
88
89
90static void do_changename(char *dev, char *newdev)
91{
92 struct ifreq ifr;
93 int fd;
94
95 strncpy_IFNAMSIZ(ifr.ifr_name, dev);
96 strncpy_IFNAMSIZ(ifr.ifr_newname, newdev);
97 fd = get_ctl_fd();
98 xioctl(fd, SIOCSIFNAME, &ifr);
99 close(fd);
100}
101
102
103static void set_qlen(char *dev, int qlen)
104{
105 struct ifreq ifr;
106 int s;
107
108 s = get_ctl_fd();
109 memset(&ifr, 0, sizeof(ifr));
110 strncpy_IFNAMSIZ(ifr.ifr_name, dev);
111 ifr.ifr_qlen = qlen;
112 xioctl(s, SIOCSIFTXQLEN, &ifr);
113 close(s);
114}
115
116
117static void set_mtu(char *dev, int mtu)
118{
119 struct ifreq ifr;
120 int s;
121
122 s = get_ctl_fd();
123 memset(&ifr, 0, sizeof(ifr));
124 strncpy_IFNAMSIZ(ifr.ifr_name, dev);
125 ifr.ifr_mtu = mtu;
126 xioctl(s, SIOCSIFMTU, &ifr);
127 close(s);
128}
129
130
131static void set_master(char *dev, int master)
132{
133 struct rtnl_handle rth;
134 struct {
135 struct nlmsghdr n;
136 struct ifinfomsg i;
137 char buf[1024];
138 } req;
139
140 memset(&req, 0, sizeof(req));
141
142 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
143 req.n.nlmsg_flags = NLM_F_REQUEST;
144 req.n.nlmsg_type = RTM_NEWLINK;
145 req.i.ifi_family = preferred_family;
146
147 xrtnl_open(&rth);
148 req.i.ifi_index = xll_name_to_index(dev);
149
150 addattr_l(&req.n, sizeof(req), IFLA_MASTER, &master, 4);
151 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
152 xfunc_die();
153}
154
155
156static int get_address(char *dev, int *htype)
157{
158 struct ifreq ifr;
159 struct sockaddr_ll me;
160 int s;
161
162 s = xsocket(PF_PACKET, SOCK_DGRAM, 0);
163
164
165 strncpy_IFNAMSIZ(ifr.ifr_name, dev);
166 xioctl(s, SIOCGIFINDEX, &ifr);
167
168 memset(&me, 0, sizeof(me));
169 me.sll_family = AF_PACKET;
170 me.sll_ifindex = ifr.ifr_ifindex;
171 me.sll_protocol = htons(ETH_P_LOOP);
172 xbind(s, (struct sockaddr*)&me, sizeof(me));
173 bb_getsockname(s, (struct sockaddr*)&me, sizeof(me));
174
175
176
177 close(s);
178 *htype = me.sll_hatype;
179 return me.sll_halen;
180}
181
182
183static void parse_address(char *dev, int hatype, int halen, char *lla, struct ifreq *ifr)
184{
185 int alen;
186
187 memset(ifr, 0, sizeof(*ifr));
188 strncpy_IFNAMSIZ(ifr->ifr_name, dev);
189 ifr->ifr_hwaddr.sa_family = hatype;
190
191 alen = hatype == 1 ? 14 : 19;
192 alen = ll_addr_a2n((unsigned char *)(ifr->ifr_hwaddr.sa_data), alen, lla);
193 if (alen < 0)
194 exit(EXIT_FAILURE);
195 if (alen != halen) {
196 bb_error_msg_and_die("wrong address (%s) length: expected %d bytes", lla, halen);
197 }
198}
199
200
201static void set_address(struct ifreq *ifr, int brd)
202{
203 int s;
204
205 s = get_ctl_fd();
206 if (brd)
207 xioctl(s, SIOCSIFHWBROADCAST, ifr);
208 else
209 xioctl(s, SIOCSIFHWADDR, ifr);
210 close(s);
211}
212
213
214static void die_must_be_on_off(const char *msg) NORETURN;
215static void die_must_be_on_off(const char *msg)
216{
217 bb_error_msg_and_die("argument of \"%s\" must be \"on\" or \"off\"", msg);
218}
219
220
221static int do_set(char **argv)
222{
223 char *dev = NULL;
224 uint32_t mask = 0;
225 uint32_t flags = 0;
226 int qlen = -1;
227 int mtu = -1;
228 int master = -1;
229 char *newaddr = NULL;
230 char *newbrd = NULL;
231 struct ifreq ifr0, ifr1;
232 char *newname = NULL;
233 int htype, halen;
234
235 static const char keywords[] ALIGN1 =
236 "up\0""down\0""name\0""mtu\0""qlen\0""multicast\0"
237 "arp\0""promisc\0""address\0"
238 "master\0""nomaster\0"
239 "dev\0" ;
240 enum { ARG_up = 0, ARG_down, ARG_name, ARG_mtu, ARG_qlen, ARG_multicast,
241 ARG_arp, ARG_promisc, ARG_addr,
242 ARG_master, ARG_nomaster,
243 ARG_dev };
244 enum { PARM_on = 0, PARM_off };
245 smalluint key;
246
247 while (*argv) {
248
249
250 key = index_in_substrings(keywords, *argv);
251 if (key == ARG_up) {
252 mask |= IFF_UP;
253 flags |= IFF_UP;
254 } else if (key == ARG_down) {
255 mask |= IFF_UP;
256 flags &= ~IFF_UP;
257 } else if (key == ARG_name) {
258 NEXT_ARG();
259 newname = *argv;
260 } else if (key == ARG_mtu) {
261 NEXT_ARG();
262 if (mtu != -1)
263 duparg("mtu", *argv);
264 mtu = get_unsigned(*argv, "mtu");
265 } else if (key == ARG_qlen) {
266
267 NEXT_ARG();
268 if (qlen != -1)
269 duparg("qlen", *argv);
270 qlen = get_unsigned(*argv, "qlen");
271 } else if (key == ARG_addr) {
272 NEXT_ARG();
273 newaddr = *argv;
274 } else if (key == ARG_master) {
275 NEXT_ARG();
276 master = xll_name_to_index(*argv);
277 } else if (key == ARG_nomaster) {
278 master = 0;
279 } else if (key >= ARG_dev) {
280
281 if (key == ARG_dev) {
282 NEXT_ARG();
283 }
284 if (dev)
285 duparg2("dev", *argv);
286 dev = *argv;
287 } else {
288
289 int param;
290 NEXT_ARG();
291 param = index_in_strings(str_on_off, *argv);
292 if (key == ARG_multicast) {
293 if (param < 0)
294 die_must_be_on_off("multicast");
295 mask |= IFF_MULTICAST;
296 if (param == PARM_on)
297 flags |= IFF_MULTICAST;
298 else
299 flags &= ~IFF_MULTICAST;
300 } else if (key == ARG_arp) {
301 if (param < 0)
302 die_must_be_on_off("arp");
303 mask |= IFF_NOARP;
304 if (param == PARM_on)
305 flags &= ~IFF_NOARP;
306 else
307 flags |= IFF_NOARP;
308 } else if (key == ARG_promisc) {
309 if (param < 0)
310 die_must_be_on_off("promisc");
311 mask |= IFF_PROMISC;
312 if (param == PARM_on)
313 flags |= IFF_PROMISC;
314 else
315 flags &= ~IFF_PROMISC;
316 }
317 }
318
319
320#if 0
321 } else if (matches(*argv, "broadcast") == 0 ||
322 strcmp(*argv, "brd") == 0) {
323 NEXT_ARG();
324 len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
325 if (len < 0)
326 return -1;
327 addattr_l(&req->n, sizeof(*req), IFLA_BROADCAST, abuf, len);
328 } else if (strcmp(*argv, "netns") == 0) {
329 NEXT_ARG();
330 if (netns != -1)
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);
336 else
337 invarg_1_to_2(*argv, "netns");
338 } else if (strcmp(*argv, "allmulticast") == 0) {
339 NEXT_ARG();
340 req->i.ifi_change |= IFF_ALLMULTI;
341 if (strcmp(*argv, "on") == 0) {
342 req->i.ifi_flags |= IFF_ALLMULTI;
343 } else if (strcmp(*argv, "off") == 0) {
344 req->i.ifi_flags &= ~IFF_ALLMULTI;
345 } else
346 return on_off("allmulticast", *argv);
347 } else if (strcmp(*argv, "trailers") == 0) {
348 NEXT_ARG();
349 req->i.ifi_change |= IFF_NOTRAILERS;
350 if (strcmp(*argv, "off") == 0) {
351 req->i.ifi_flags |= IFF_NOTRAILERS;
352 } else if (strcmp(*argv, "on") == 0) {
353 req->i.ifi_flags &= ~IFF_NOTRAILERS;
354 } else
355 return on_off("trailers", *argv);
356 } else if (strcmp(*argv, "vf") == 0) {
357 struct rtattr *vflist;
358 NEXT_ARG();
359 if (get_integer(&vf, *argv, 0)) {
360 invarg_1_to_2(*argv, "vf");
361 }
362 vflist = addattr_nest(&req->n, sizeof(*req),
363 IFLA_VFINFO_LIST);
364 len = iplink_parse_vf(vf, &argc, &argv, req);
365 if (len < 0)
366 return -1;
367 addattr_nest_end(&req->n, vflist);
368 } else if (matches(*argv, "master") == 0) {
369 int ifindex;
370 NEXT_ARG();
371 ifindex = ll_name_to_index(*argv);
372 if (!ifindex)
373 invarg_1_to_2(*argv, "master");
374 addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
375 &ifindex, 4);
376 } else if (matches(*argv, "nomaster") == 0) {
377 int ifindex = 0;
378 addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
379 &ifindex, 4);
380 } else if (matches(*argv, "dynamic") == 0) {
381 NEXT_ARG();
382 req->i.ifi_change |= IFF_DYNAMIC;
383 if (strcmp(*argv, "on") == 0) {
384 req->i.ifi_flags |= IFF_DYNAMIC;
385 } else if (strcmp(*argv, "off") == 0) {
386 req->i.ifi_flags &= ~IFF_DYNAMIC;
387 } else
388 return on_off("dynamic", *argv);
389 } else if (matches(*argv, "alias") == 0) {
390 NEXT_ARG();
391 addattr_l(&req->n, sizeof(*req), IFLA_IFALIAS,
392 *argv, strlen(*argv));
393 argc--; argv++;
394 break;
395 } else if (strcmp(*argv, "group") == 0) {
396 NEXT_ARG();
397 if (*group != -1)
398 duparg("group", *argv);
399 if (rtnl_group_a2n(group, *argv))
400 invarg_1_to_2(*argv, "group");
401 } else if (strcmp(*argv, "mode") == 0) {
402 int mode;
403 NEXT_ARG();
404 mode = get_link_mode(*argv);
405 if (mode < 0)
406 invarg_1_to_2(*argv, "mode");
407 addattr8(&req->n, sizeof(*req), IFLA_LINKMODE, mode);
408 } else if (strcmp(*argv, "state") == 0) {
409 int state;
410 NEXT_ARG();
411 state = get_operstate(*argv);
412 if (state < 0)
413 invarg_1_to_2(*argv, "state");
414 addattr8(&req->n, sizeof(*req), IFLA_OPERSTATE, state);
415 } else if (matches(*argv, "numtxqueues") == 0) {
416 NEXT_ARG();
417 if (numtxqueues != -1)
418 duparg("numtxqueues", *argv);
419 if (get_integer(&numtxqueues, *argv, 0))
420 invarg_1_to_2(*argv, "numtxqueues");
421 addattr_l(&req->n, sizeof(*req), IFLA_NUM_TX_QUEUES,
422 &numtxqueues, 4);
423 } else if (matches(*argv, "numrxqueues") == 0) {
424 NEXT_ARG();
425 if (numrxqueues != -1)
426 duparg("numrxqueues", *argv);
427 if (get_integer(&numrxqueues, *argv, 0))
428 invarg_1_to_2(*argv, "numrxqueues");
429 addattr_l(&req->n, sizeof(*req), IFLA_NUM_RX_QUEUES,
430 &numrxqueues, 4);
431 }
432#endif
433
434 argv++;
435 }
436
437 if (!dev) {
438 bb_error_msg_and_die(bb_msg_requires_arg, "\"dev\"");
439 }
440
441 if (newaddr || newbrd) {
442 halen = get_address(dev, &htype);
443 if (newaddr) {
444 parse_address(dev, htype, halen, newaddr, &ifr0);
445 set_address(&ifr0, 0);
446 }
447 if (newbrd) {
448 parse_address(dev, htype, halen, newbrd, &ifr1);
449 set_address(&ifr1, 1);
450 }
451 }
452
453 if (newname && strcmp(dev, newname)) {
454 do_changename(dev, newname);
455 dev = newname;
456 }
457 if (qlen != -1) {
458 set_qlen(dev, qlen);
459 }
460 if (mtu != -1) {
461 set_mtu(dev, mtu);
462 }
463 if (master != -1) {
464 set_master(dev, master);
465 }
466 if (mask)
467 do_chflags(dev, flags, mask);
468 return 0;
469}
470
471static int ipaddr_list_link(char **argv)
472{
473 preferred_family = AF_PACKET;
474 return ipaddr_list_or_flush(argv, 0);
475}
476
477static void vlan_parse_opt(char **argv, struct nlmsghdr *n, unsigned int size)
478{
479 static const char keywords[] ALIGN1 =
480 "id\0"
481 "protocol\0"
482 "reorder_hdr\0"
483 "gvrp\0"
484 "mvrp\0"
485 "loose_binding\0"
486 ;
487 static const char protocols[] ALIGN1 =
488 "802.1q\0"
489 "802.1ad\0"
490 ;
491 enum {
492 ARG_id = 0,
493 ARG_protocol,
494 ARG_reorder_hdr,
495 ARG_gvrp,
496 ARG_mvrp,
497 ARG_loose_binding,
498 };
499 enum {
500 PROTO_8021Q = 0,
501 PROTO_8021AD,
502 };
503 enum {
504 PARM_on = 0,
505 PARM_off
506 };
507 int arg;
508 uint16_t id, proto;
509 struct ifla_vlan_flags flags = {};
510
511 while (*argv) {
512 arg = index_in_substrings(keywords, *argv);
513 if (arg < 0)
514 invarg_1_to_2(*argv, "type vlan");
515
516 NEXT_ARG();
517 if (arg == ARG_id) {
518 id = get_u16(*argv, "id");
519 addattr_l(n, size, IFLA_VLAN_ID, &id, sizeof(id));
520 } else if (arg == ARG_protocol) {
521 arg = index_in_substrings(protocols, str_tolower(*argv));
522 if (arg == PROTO_8021Q)
523 proto = htons(ETH_P_8021Q);
524 else if (arg == PROTO_8021AD)
525 proto = htons(ETH_P_8021AD);
526 else
527 bb_error_msg_and_die("unknown VLAN encapsulation protocol '%s'",
528 *argv);
529 addattr_l(n, size, IFLA_VLAN_PROTOCOL, &proto, sizeof(proto));
530 } else {
531 int param = index_in_strings(str_on_off, *argv);
532 if (param < 0)
533 die_must_be_on_off(nth_string(keywords, arg));
534
535 if (arg == ARG_reorder_hdr) {
536 flags.mask |= VLAN_FLAG_REORDER_HDR;
537 flags.flags &= ~VLAN_FLAG_REORDER_HDR;
538 if (param == PARM_on)
539 flags.flags |= VLAN_FLAG_REORDER_HDR;
540 } else if (arg == ARG_gvrp) {
541 flags.mask |= VLAN_FLAG_GVRP;
542 flags.flags &= ~VLAN_FLAG_GVRP;
543 if (param == PARM_on)
544 flags.flags |= VLAN_FLAG_GVRP;
545 } else if (arg == ARG_mvrp) {
546 flags.mask |= VLAN_FLAG_MVRP;
547 flags.flags &= ~VLAN_FLAG_MVRP;
548 if (param == PARM_on)
549 flags.flags |= VLAN_FLAG_MVRP;
550 } else {
551 flags.mask |= VLAN_FLAG_LOOSE_BINDING;
552 flags.flags &= ~VLAN_FLAG_LOOSE_BINDING;
553 if (param == PARM_on)
554 flags.flags |= VLAN_FLAG_LOOSE_BINDING;
555 }
556 }
557 argv++;
558 }
559
560 if (flags.mask)
561 addattr_l(n, size, IFLA_VLAN_FLAGS, &flags, sizeof(flags));
562}
563
564static void vrf_parse_opt(char **argv, struct nlmsghdr *n, unsigned int size)
565{
566
567
568
569#if !defined(IFLA_VRF_MAX)
570# define IFLA_VRF_TABLE 1
571#endif
572 uint32_t table;
573
574 if (strcmp(*argv, "table") != 0)
575 invarg_1_to_2(*argv, "type vrf");
576
577 NEXT_ARG();
578 table = get_u32(*argv, "table");
579 addattr_l(n, size, IFLA_VRF_TABLE, &table, sizeof(table));
580}
581
582#ifndef NLMSG_TAIL
583#define NLMSG_TAIL(nmsg) \
584 ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
585#endif
586
587static int do_add_or_delete(char **argv, const unsigned rtm)
588{
589 static const char keywords[] ALIGN1 =
590 "link\0""name\0""type\0""dev\0""address\0";
591 enum {
592 ARG_link,
593 ARG_name,
594 ARG_type,
595 ARG_dev,
596 ARG_address,
597 };
598 struct rtnl_handle rth;
599 struct {
600 struct nlmsghdr n;
601 struct ifinfomsg i;
602 char buf[1024];
603 } req;
604 smalluint arg;
605 char *name_str = NULL;
606 char *link_str = NULL;
607 char *type_str = NULL;
608 char *dev_str = NULL;
609 char *address_str = NULL;
610
611 memset(&req, 0, sizeof(req));
612
613 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
614 req.n.nlmsg_flags = NLM_F_REQUEST;
615 req.n.nlmsg_type = rtm;
616 req.i.ifi_family = preferred_family;
617 if (rtm == RTM_NEWLINK)
618 req.n.nlmsg_flags |= NLM_F_CREATE|NLM_F_EXCL;
619
620
621
622 while (*argv) {
623 arg = index_in_substrings(keywords, *argv);
624 if (arg == ARG_type) {
625 NEXT_ARG();
626 type_str = *argv++;
627 dbg("type_str:'%s'", type_str);
628 break;
629 }
630 if (arg == ARG_link) {
631 NEXT_ARG();
632 link_str = *argv;
633 dbg("link_str:'%s'", link_str);
634 } else if (arg == ARG_name) {
635 NEXT_ARG();
636 name_str = *argv;
637 dbg("name_str:'%s'", name_str);
638 } else if (arg == ARG_address) {
639 NEXT_ARG();
640 address_str = *argv;
641 dbg("address_str:'%s'", address_str);
642 } else {
643 if (arg == ARG_dev) {
644 if (dev_str)
645 duparg(*argv, "dev");
646 NEXT_ARG();
647 }
648 dev_str = *argv;
649 dbg("dev_str:'%s'", dev_str);
650 }
651 argv++;
652 }
653 xrtnl_open(&rth);
654 ll_init_map(&rth);
655 if (type_str) {
656 struct rtattr *linkinfo = NLMSG_TAIL(&req.n);
657
658 addattr_l(&req.n, sizeof(req), IFLA_LINKINFO, NULL, 0);
659 addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, type_str,
660 strlen(type_str));
661
662 if (*argv) {
663 struct rtattr *data = NLMSG_TAIL(&req.n);
664 addattr_l(&req.n, sizeof(req), IFLA_INFO_DATA, NULL, 0);
665
666 if (strcmp(type_str, "vlan") == 0)
667 vlan_parse_opt(argv, &req.n, sizeof(req));
668 else if (strcmp(type_str, "vrf") == 0)
669 vrf_parse_opt(argv, &req.n, sizeof(req));
670
671 data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;
672 }
673
674 linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo;
675 }
676
677 if (!name_str)
678 name_str = dev_str;
679 else if (!dev_str)
680 dev_str = name_str;
681
682
683
684 if (rtm != RTM_NEWLINK) {
685 if (!dev_str)
686 return 1;
687 req.i.ifi_index = xll_name_to_index(dev_str);
688 } else {
689 if (link_str) {
690 int idx = xll_name_to_index(link_str);
691 addattr_l(&req.n, sizeof(req), IFLA_LINK, &idx, 4);
692 }
693 if (address_str) {
694 unsigned char abuf[32];
695 int len = ll_addr_a2n(abuf, sizeof(abuf), address_str);
696 dbg("address len:%d", len);
697 if (len < 0)
698 return -1;
699 addattr_l(&req.n, sizeof(req), IFLA_ADDRESS, abuf, len);
700 }
701 }
702 if (name_str) {
703 const size_t name_len = strlen(name_str) + 1;
704 if (name_len < 2 || name_len > IFNAMSIZ)
705 invarg_1_to_2(name_str, "name");
706 addattr_l(&req.n, sizeof(req), IFLA_IFNAME, name_str, name_len);
707 }
708 if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
709 return 2;
710 return 0;
711}
712
713
714int FAST_FUNC do_iplink(char **argv)
715{
716 static const char keywords[] ALIGN1 =
717 "add\0""delete\0""set\0""show\0""lst\0""list\0";
718
719 xfunc_error_retval = 2;
720 if (*argv) {
721 int key = index_in_substrings(keywords, *argv);
722 if (key < 0)
723 invarg_1_to_2(*argv, applet_name);
724 argv++;
725 if (key <= 1)
726 return do_add_or_delete(argv, key ? RTM_DELLINK : RTM_NEWLINK);
727 if (key == 2)
728 return do_set(argv);
729 }
730
731 return ipaddr_list_link(argv);
732}
733
