1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
|
---|
4 | * Patrick McHardy <kaber@trash.net>
|
---|
5 | *
|
---|
6 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
7 | */
|
---|
8 | #include <net/if.h>
|
---|
9 | /*#include <net/if_packet.h> - not needed? */
|
---|
10 | #include <netpacket/packet.h>
|
---|
11 | #include <netinet/if_ether.h>
|
---|
12 |
|
---|
13 | #include <linux/if_vlan.h>
|
---|
14 | #include "ip_common.h" /* #include "libbb.h" is inside */
|
---|
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
|
---|
40 | struct ifla_vlan_flags {
|
---|
41 | uint32_t flags;
|
---|
42 | uint32_t mask;
|
---|
43 | };
|
---|
44 | #endif
|
---|
45 |
|
---|
46 | /* taken from linux/sockios.h */
|
---|
47 | #define SIOCSIFNAME 0x8923 /* set interface name */
|
---|
48 |
|
---|
49 | #if 0
|
---|
50 | # define dbg(...) bb_error_msg(__VA_ARGS__)
|
---|
51 | #else
|
---|
52 | # define dbg(...) ((void)0)
|
---|
53 | #endif
|
---|
54 |
|
---|
55 | /* Exits on error */
|
---|
56 | static int get_ctl_fd(void)
|
---|
57 | {
|
---|
58 | int fd;
|
---|
59 |
|
---|
60 | fd = socket(PF_INET, SOCK_DGRAM, 0);
|
---|
61 | if (fd >= 0)
|
---|
62 | return fd;
|
---|
63 | fd = socket(PF_PACKET, SOCK_DGRAM, 0);
|
---|
64 | if (fd >= 0)
|
---|
65 | return fd;
|
---|
66 | return xsocket(PF_INET6, SOCK_DGRAM, 0);
|
---|
67 | }
|
---|
68 |
|
---|
69 | /* Exits on error */
|
---|
70 | static void do_chflags(char *dev, uint32_t flags, uint32_t mask)
|
---|
71 | {
|
---|
72 | struct ifreq ifr;
|
---|
73 | int fd;
|
---|
74 |
|
---|
75 | strncpy_IFNAMSIZ(ifr.ifr_name, dev);
|
---|
76 | fd = get_ctl_fd();
|
---|
77 | xioctl(fd, SIOCGIFFLAGS, &ifr);
|
---|
78 | if ((ifr.ifr_flags ^ flags) & mask) {
|
---|
79 | ifr.ifr_flags &= ~mask;
|
---|
80 | ifr.ifr_flags |= mask & flags;
|
---|
81 | xioctl(fd, SIOCSIFFLAGS, &ifr);
|
---|
82 | }
|
---|
83 | close(fd);
|
---|
84 | }
|
---|
85 |
|
---|
86 | /* Exits on error */
|
---|
87 | static void do_changename(char *dev, char *newdev)
|
---|
88 | {
|
---|
89 | struct ifreq ifr;
|
---|
90 | int fd;
|
---|
91 |
|
---|
92 | strncpy_IFNAMSIZ(ifr.ifr_name, dev);
|
---|
93 | strncpy_IFNAMSIZ(ifr.ifr_newname, newdev);
|
---|
94 | fd = get_ctl_fd();
|
---|
95 | xioctl(fd, SIOCSIFNAME, &ifr);
|
---|
96 | close(fd);
|
---|
97 | }
|
---|
98 |
|
---|
99 | /* Exits on error */
|
---|
100 | static void set_qlen(char *dev, int qlen)
|
---|
101 | {
|
---|
102 | struct ifreq ifr;
|
---|
103 | int s;
|
---|
104 |
|
---|
105 | s = get_ctl_fd();
|
---|
106 | memset(&ifr, 0, sizeof(ifr));
|
---|
107 | strncpy_IFNAMSIZ(ifr.ifr_name, dev);
|
---|
108 | ifr.ifr_qlen = qlen;
|
---|
109 | xioctl(s, SIOCSIFTXQLEN, &ifr);
|
---|
110 | close(s);
|
---|
111 | }
|
---|
112 |
|
---|
113 | /* Exits on error */
|
---|
114 | static void set_mtu(char *dev, int mtu)
|
---|
115 | {
|
---|
116 | struct ifreq ifr;
|
---|
117 | int s;
|
---|
118 |
|
---|
119 | s = get_ctl_fd();
|
---|
120 | memset(&ifr, 0, sizeof(ifr));
|
---|
121 | strncpy_IFNAMSIZ(ifr.ifr_name, dev);
|
---|
122 | ifr.ifr_mtu = mtu;
|
---|
123 | xioctl(s, SIOCSIFMTU, &ifr);
|
---|
124 | close(s);
|
---|
125 | }
|
---|
126 |
|
---|
127 | /* Exits on error */
|
---|
128 | static int get_address(char *dev, int *htype)
|
---|
129 | {
|
---|
130 | struct ifreq ifr;
|
---|
131 | struct sockaddr_ll me;
|
---|
132 | socklen_t alen;
|
---|
133 | int s;
|
---|
134 |
|
---|
135 | s = xsocket(PF_PACKET, SOCK_DGRAM, 0);
|
---|
136 |
|
---|
137 | memset(&ifr, 0, sizeof(ifr));
|
---|
138 | strncpy_IFNAMSIZ(ifr.ifr_name, dev);
|
---|
139 | xioctl(s, SIOCGIFINDEX, &ifr);
|
---|
140 |
|
---|
141 | memset(&me, 0, sizeof(me));
|
---|
142 | me.sll_family = AF_PACKET;
|
---|
143 | me.sll_ifindex = ifr.ifr_ifindex;
|
---|
144 | me.sll_protocol = htons(ETH_P_LOOP);
|
---|
145 | xbind(s, (struct sockaddr*)&me, sizeof(me));
|
---|
146 | alen = sizeof(me);
|
---|
147 | getsockname(s, (struct sockaddr*)&me, &alen);
|
---|
148 | //never happens:
|
---|
149 | //if (getsockname(s, (struct sockaddr*)&me, &alen) == -1)
|
---|
150 | // bb_perror_msg_and_die("getsockname");
|
---|
151 | close(s);
|
---|
152 | *htype = me.sll_hatype;
|
---|
153 | return me.sll_halen;
|
---|
154 | }
|
---|
155 |
|
---|
156 | /* Exits on error */
|
---|
157 | static void parse_address(char *dev, int hatype, int halen, char *lla, struct ifreq *ifr)
|
---|
158 | {
|
---|
159 | int alen;
|
---|
160 |
|
---|
161 | memset(ifr, 0, sizeof(*ifr));
|
---|
162 | strncpy_IFNAMSIZ(ifr->ifr_name, dev);
|
---|
163 | ifr->ifr_hwaddr.sa_family = hatype;
|
---|
164 |
|
---|
165 | alen = hatype == 1/*ARPHRD_ETHER*/ ? 14/*ETH_HLEN*/ : 19/*INFINIBAND_HLEN*/;
|
---|
166 | alen = ll_addr_a2n((unsigned char *)(ifr->ifr_hwaddr.sa_data), alen, lla);
|
---|
167 | if (alen < 0)
|
---|
168 | exit(EXIT_FAILURE);
|
---|
169 | if (alen != halen) {
|
---|
170 | bb_error_msg_and_die("wrong address (%s) length: expected %d bytes", lla, halen);
|
---|
171 | }
|
---|
172 | }
|
---|
173 |
|
---|
174 | /* Exits on error */
|
---|
175 | static void set_address(struct ifreq *ifr, int brd)
|
---|
176 | {
|
---|
177 | int s;
|
---|
178 |
|
---|
179 | s = get_ctl_fd();
|
---|
180 | if (brd)
|
---|
181 | xioctl(s, SIOCSIFHWBROADCAST, ifr);
|
---|
182 | else
|
---|
183 | xioctl(s, SIOCSIFHWADDR, ifr);
|
---|
184 | close(s);
|
---|
185 | }
|
---|
186 |
|
---|
187 |
|
---|
188 | static void die_must_be_on_off(const char *msg) NORETURN;
|
---|
189 | static void die_must_be_on_off(const char *msg)
|
---|
190 | {
|
---|
191 | bb_error_msg_and_die("argument of \"%s\" must be \"on\" or \"off\"", msg);
|
---|
192 | }
|
---|
193 |
|
---|
194 | /* Return value becomes exitcode. It's okay to not return at all */
|
---|
195 | static int do_set(char **argv)
|
---|
196 | {
|
---|
197 | char *dev = NULL;
|
---|
198 | uint32_t mask = 0;
|
---|
199 | uint32_t flags = 0;
|
---|
200 | int qlen = -1;
|
---|
201 | int mtu = -1;
|
---|
202 | char *newaddr = NULL;
|
---|
203 | char *newbrd = NULL;
|
---|
204 | struct ifreq ifr0, ifr1;
|
---|
205 | char *newname = NULL;
|
---|
206 | int htype, halen;
|
---|
207 | static const char keywords[] ALIGN1 =
|
---|
208 | "up\0""down\0""name\0""mtu\0""qlen\0""multicast\0"
|
---|
209 | "arp\0""address\0""dev\0";
|
---|
210 | enum { ARG_up = 0, ARG_down, ARG_name, ARG_mtu, ARG_qlen, ARG_multicast,
|
---|
211 | ARG_arp, ARG_addr, ARG_dev };
|
---|
212 | static const char str_on_off[] ALIGN1 = "on\0""off\0";
|
---|
213 | enum { PARM_on = 0, PARM_off };
|
---|
214 | smalluint key;
|
---|
215 |
|
---|
216 | while (*argv) {
|
---|
217 | /* substring search ensures that e.g. "addr" and "address"
|
---|
218 | * are both accepted */
|
---|
219 | key = index_in_substrings(keywords, *argv);
|
---|
220 | if (key == ARG_up) {
|
---|
221 | mask |= IFF_UP;
|
---|
222 | flags |= IFF_UP;
|
---|
223 | } else if (key == ARG_down) {
|
---|
224 | mask |= IFF_UP;
|
---|
225 | flags &= ~IFF_UP;
|
---|
226 | } else if (key == ARG_name) {
|
---|
227 | NEXT_ARG();
|
---|
228 | newname = *argv;
|
---|
229 | } else if (key == ARG_mtu) {
|
---|
230 | NEXT_ARG();
|
---|
231 | if (mtu != -1)
|
---|
232 | duparg("mtu", *argv);
|
---|
233 | mtu = get_unsigned(*argv, "mtu");
|
---|
234 | } else if (key == ARG_qlen) {
|
---|
235 | NEXT_ARG();
|
---|
236 | if (qlen != -1)
|
---|
237 | duparg("qlen", *argv);
|
---|
238 | qlen = get_unsigned(*argv, "qlen");
|
---|
239 | } else if (key == ARG_addr) {
|
---|
240 | NEXT_ARG();
|
---|
241 | newaddr = *argv;
|
---|
242 | } else if (key >= ARG_dev) {
|
---|
243 | if (key == ARG_dev) {
|
---|
244 | NEXT_ARG();
|
---|
245 | }
|
---|
246 | if (dev)
|
---|
247 | duparg2("dev", *argv);
|
---|
248 | dev = *argv;
|
---|
249 | } else {
|
---|
250 | int param;
|
---|
251 | NEXT_ARG();
|
---|
252 | param = index_in_strings(str_on_off, *argv);
|
---|
253 | if (key == ARG_multicast) {
|
---|
254 | if (param < 0)
|
---|
255 | die_must_be_on_off("multicast");
|
---|
256 | mask |= IFF_MULTICAST;
|
---|
257 | if (param == PARM_on)
|
---|
258 | flags |= IFF_MULTICAST;
|
---|
259 | else
|
---|
260 | flags &= ~IFF_MULTICAST;
|
---|
261 | } else if (key == ARG_arp) {
|
---|
262 | if (param < 0)
|
---|
263 | die_must_be_on_off("arp");
|
---|
264 | mask |= IFF_NOARP;
|
---|
265 | if (param == PARM_on)
|
---|
266 | flags &= ~IFF_NOARP;
|
---|
267 | else
|
---|
268 | flags |= IFF_NOARP;
|
---|
269 | }
|
---|
270 | }
|
---|
271 | argv++;
|
---|
272 | }
|
---|
273 |
|
---|
274 | if (!dev) {
|
---|
275 | bb_error_msg_and_die(bb_msg_requires_arg, "\"dev\"");
|
---|
276 | }
|
---|
277 |
|
---|
278 | if (newaddr || newbrd) {
|
---|
279 | halen = get_address(dev, &htype);
|
---|
280 | if (newaddr) {
|
---|
281 | parse_address(dev, htype, halen, newaddr, &ifr0);
|
---|
282 | set_address(&ifr0, 0);
|
---|
283 | }
|
---|
284 | if (newbrd) {
|
---|
285 | parse_address(dev, htype, halen, newbrd, &ifr1);
|
---|
286 | set_address(&ifr1, 1);
|
---|
287 | }
|
---|
288 | }
|
---|
289 |
|
---|
290 | if (newname && strcmp(dev, newname)) {
|
---|
291 | do_changename(dev, newname);
|
---|
292 | dev = newname;
|
---|
293 | }
|
---|
294 | if (qlen != -1) {
|
---|
295 | set_qlen(dev, qlen);
|
---|
296 | }
|
---|
297 | if (mtu != -1) {
|
---|
298 | set_mtu(dev, mtu);
|
---|
299 | }
|
---|
300 | if (mask)
|
---|
301 | do_chflags(dev, flags, mask);
|
---|
302 | return 0;
|
---|
303 | }
|
---|
304 |
|
---|
305 | static int ipaddr_list_link(char **argv)
|
---|
306 | {
|
---|
307 | preferred_family = AF_PACKET;
|
---|
308 | return ipaddr_list_or_flush(argv, 0);
|
---|
309 | }
|
---|
310 |
|
---|
311 | static void vlan_parse_opt(char **argv, struct nlmsghdr *n, unsigned int size)
|
---|
312 | {
|
---|
313 | static const char keywords[] ALIGN1 =
|
---|
314 | "id\0"
|
---|
315 | "protocol\0"
|
---|
316 | "reorder_hdr\0"
|
---|
317 | "gvrp\0"
|
---|
318 | "mvrp\0"
|
---|
319 | "loose_binding\0"
|
---|
320 | ;
|
---|
321 | static const char protocols[] ALIGN1 =
|
---|
322 | "802.1q\0"
|
---|
323 | "802.1ad\0"
|
---|
324 | ;
|
---|
325 | static const char str_on_off[] ALIGN1 =
|
---|
326 | "on\0"
|
---|
327 | "off\0"
|
---|
328 | ;
|
---|
329 | enum {
|
---|
330 | ARG_id = 0,
|
---|
331 | ARG_reorder_hdr,
|
---|
332 | ARG_gvrp,
|
---|
333 | ARG_mvrp,
|
---|
334 | ARG_loose_binding,
|
---|
335 | ARG_protocol,
|
---|
336 | };
|
---|
337 | enum {
|
---|
338 | PROTO_8021Q = 0,
|
---|
339 | PROTO_8021AD,
|
---|
340 | };
|
---|
341 | enum {
|
---|
342 | PARM_on = 0,
|
---|
343 | PARM_off
|
---|
344 | };
|
---|
345 | int arg;
|
---|
346 | uint16_t id, proto;
|
---|
347 | struct ifla_vlan_flags flags = {};
|
---|
348 |
|
---|
349 | while (*argv) {
|
---|
350 | arg = index_in_substrings(keywords, *argv);
|
---|
351 | if (arg < 0)
|
---|
352 | invarg_1_to_2(*argv, "type vlan");
|
---|
353 |
|
---|
354 | NEXT_ARG();
|
---|
355 | if (arg == ARG_id) {
|
---|
356 | id = get_u16(*argv, "id");
|
---|
357 | addattr_l(n, size, IFLA_VLAN_ID, &id, sizeof(id));
|
---|
358 | } else if (arg == ARG_protocol) {
|
---|
359 | arg = index_in_substrings(protocols, *argv);
|
---|
360 | if (arg == PROTO_8021Q)
|
---|
361 | proto = ETH_P_8021Q;
|
---|
362 | else if (arg == PROTO_8021AD)
|
---|
363 | proto = ETH_P_8021AD;
|
---|
364 | else
|
---|
365 | bb_error_msg_and_die("unknown VLAN encapsulation protocol '%s'",
|
---|
366 | *argv);
|
---|
367 | addattr_l(n, size, IFLA_VLAN_PROTOCOL, &proto, sizeof(proto));
|
---|
368 | } else {
|
---|
369 | int param = index_in_strings(str_on_off, *argv);
|
---|
370 | if (param < 0)
|
---|
371 | die_must_be_on_off(nth_string(keywords, arg));
|
---|
372 |
|
---|
373 | if (arg == ARG_reorder_hdr) {
|
---|
374 | flags.mask |= VLAN_FLAG_REORDER_HDR;
|
---|
375 | flags.flags &= ~VLAN_FLAG_REORDER_HDR;
|
---|
376 | if (param == PARM_on)
|
---|
377 | flags.flags |= VLAN_FLAG_REORDER_HDR;
|
---|
378 | } else if (arg == ARG_gvrp) {
|
---|
379 | flags.mask |= VLAN_FLAG_GVRP;
|
---|
380 | flags.flags &= ~VLAN_FLAG_GVRP;
|
---|
381 | if (param == PARM_on)
|
---|
382 | flags.flags |= VLAN_FLAG_GVRP;
|
---|
383 | } else if (arg == ARG_mvrp) {
|
---|
384 | flags.mask |= VLAN_FLAG_MVRP;
|
---|
385 | flags.flags &= ~VLAN_FLAG_MVRP;
|
---|
386 | if (param == PARM_on)
|
---|
387 | flags.flags |= VLAN_FLAG_MVRP;
|
---|
388 | } else { /*if (arg == ARG_loose_binding) */
|
---|
389 | flags.mask |= VLAN_FLAG_LOOSE_BINDING;
|
---|
390 | flags.flags &= ~VLAN_FLAG_LOOSE_BINDING;
|
---|
391 | if (param == PARM_on)
|
---|
392 | flags.flags |= VLAN_FLAG_LOOSE_BINDING;
|
---|
393 | }
|
---|
394 | }
|
---|
395 | argv++;
|
---|
396 | }
|
---|
397 |
|
---|
398 | if (flags.mask)
|
---|
399 | addattr_l(n, size, IFLA_VLAN_FLAGS, &flags, sizeof(flags));
|
---|
400 | }
|
---|
401 |
|
---|
402 | #ifndef NLMSG_TAIL
|
---|
403 | #define NLMSG_TAIL(nmsg) \
|
---|
404 | ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
|
---|
405 | #endif
|
---|
406 | /* Return value becomes exitcode. It's okay to not return at all */
|
---|
407 | static int do_add_or_delete(char **argv, const unsigned rtm)
|
---|
408 | {
|
---|
409 | static const char keywords[] ALIGN1 =
|
---|
410 | "link\0""name\0""type\0""dev\0""address\0";
|
---|
411 | enum {
|
---|
412 | ARG_link,
|
---|
413 | ARG_name,
|
---|
414 | ARG_type,
|
---|
415 | ARG_dev,
|
---|
416 | ARG_address,
|
---|
417 | };
|
---|
418 | struct rtnl_handle rth;
|
---|
419 | struct {
|
---|
420 | struct nlmsghdr n;
|
---|
421 | struct ifinfomsg i;
|
---|
422 | char buf[1024];
|
---|
423 | } req;
|
---|
424 | smalluint arg;
|
---|
425 | char *name_str = NULL;
|
---|
426 | char *link_str = NULL;
|
---|
427 | char *type_str = NULL;
|
---|
428 | char *dev_str = NULL;
|
---|
429 | char *address_str = NULL;
|
---|
430 |
|
---|
431 | memset(&req, 0, sizeof(req));
|
---|
432 |
|
---|
433 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
|
---|
434 | req.n.nlmsg_flags = NLM_F_REQUEST;
|
---|
435 | req.n.nlmsg_type = rtm;
|
---|
436 | req.i.ifi_family = preferred_family;
|
---|
437 | if (rtm == RTM_NEWLINK)
|
---|
438 | req.n.nlmsg_flags |= NLM_F_CREATE|NLM_F_EXCL;
|
---|
439 |
|
---|
440 | while (*argv) {
|
---|
441 | arg = index_in_substrings(keywords, *argv);
|
---|
442 | if (arg == ARG_type) {
|
---|
443 | NEXT_ARG();
|
---|
444 | type_str = *argv++;
|
---|
445 | dbg("type_str:'%s'", type_str);
|
---|
446 | break;
|
---|
447 | }
|
---|
448 | if (arg == ARG_link) {
|
---|
449 | NEXT_ARG();
|
---|
450 | link_str = *argv;
|
---|
451 | dbg("link_str:'%s'", link_str);
|
---|
452 | } else if (arg == ARG_name) {
|
---|
453 | NEXT_ARG();
|
---|
454 | name_str = *argv;
|
---|
455 | dbg("name_str:'%s'", name_str);
|
---|
456 | } else if (arg == ARG_address) {
|
---|
457 | NEXT_ARG();
|
---|
458 | address_str = *argv;
|
---|
459 | dbg("address_str:'%s'", name_str);
|
---|
460 | } else {
|
---|
461 | if (arg == ARG_dev) {
|
---|
462 | if (dev_str)
|
---|
463 | duparg(*argv, "dev");
|
---|
464 | NEXT_ARG();
|
---|
465 | }
|
---|
466 | dev_str = *argv;
|
---|
467 | dbg("dev_str:'%s'", dev_str);
|
---|
468 | }
|
---|
469 | argv++;
|
---|
470 | }
|
---|
471 | xrtnl_open(&rth);
|
---|
472 | ll_init_map(&rth);
|
---|
473 | if (type_str) {
|
---|
474 | struct rtattr *linkinfo = NLMSG_TAIL(&req.n);
|
---|
475 |
|
---|
476 | addattr_l(&req.n, sizeof(req), IFLA_LINKINFO, NULL, 0);
|
---|
477 | addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, type_str,
|
---|
478 | strlen(type_str));
|
---|
479 |
|
---|
480 | if (*argv) {
|
---|
481 | struct rtattr *data = NLMSG_TAIL(&req.n);
|
---|
482 | addattr_l(&req.n, sizeof(req), IFLA_INFO_DATA, NULL, 0);
|
---|
483 |
|
---|
484 | if (strcmp(type_str, "vlan") == 0)
|
---|
485 | vlan_parse_opt(argv, &req.n, sizeof(req));
|
---|
486 |
|
---|
487 | data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;
|
---|
488 | }
|
---|
489 |
|
---|
490 | linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo;
|
---|
491 | }
|
---|
492 | if (rtm != RTM_NEWLINK) {
|
---|
493 | if (!dev_str)
|
---|
494 | return 1; /* Need a device to delete */
|
---|
495 | req.i.ifi_index = xll_name_to_index(dev_str);
|
---|
496 | } else {
|
---|
497 | if (!name_str)
|
---|
498 | name_str = dev_str;
|
---|
499 | if (link_str) {
|
---|
500 | int idx = xll_name_to_index(link_str);
|
---|
501 | addattr_l(&req.n, sizeof(req), IFLA_LINK, &idx, 4);
|
---|
502 | }
|
---|
503 | if (address_str) {
|
---|
504 | unsigned char abuf[32];
|
---|
505 | int len = ll_addr_a2n(abuf, sizeof(abuf), address_str);
|
---|
506 | dbg("address len:%d", len);
|
---|
507 | if (len < 0)
|
---|
508 | return -1;
|
---|
509 | addattr_l(&req.n, sizeof(req), IFLA_ADDRESS, abuf, len);
|
---|
510 | }
|
---|
511 | }
|
---|
512 | if (name_str) {
|
---|
513 | const size_t name_len = strlen(name_str) + 1;
|
---|
514 | if (name_len < 2 || name_len > IFNAMSIZ)
|
---|
515 | invarg_1_to_2(name_str, "name");
|
---|
516 | addattr_l(&req.n, sizeof(req), IFLA_IFNAME, name_str, name_len);
|
---|
517 | }
|
---|
518 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
|
---|
519 | return 2;
|
---|
520 | return 0;
|
---|
521 | }
|
---|
522 |
|
---|
523 | /* Other keywords recognized by iproute2-3.12.0: */
|
---|
524 | #if 0
|
---|
525 | } else if (matches(*argv, "broadcast") == 0 ||
|
---|
526 | strcmp(*argv, "brd") == 0) {
|
---|
527 | NEXT_ARG();
|
---|
528 | len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
|
---|
529 | if (len < 0)
|
---|
530 | return -1;
|
---|
531 | addattr_l(&req->n, sizeof(*req), IFLA_BROADCAST, abuf, len);
|
---|
532 | } else if (matches(*argv, "txqueuelen") == 0 ||
|
---|
533 | strcmp(*argv, "qlen") == 0 ||
|
---|
534 | matches(*argv, "txqlen") == 0) {
|
---|
535 | NEXT_ARG();
|
---|
536 | if (qlen != -1)
|
---|
537 | duparg("txqueuelen", *argv);
|
---|
538 | if (get_integer(&qlen, *argv, 0))
|
---|
539 | invarg_1_to_2(*argv, "txqueuelen");
|
---|
540 | addattr_l(&req->n, sizeof(*req), IFLA_TXQLEN, &qlen, 4);
|
---|
541 | } else if (strcmp(*argv, "mtu") == 0) {
|
---|
542 | NEXT_ARG();
|
---|
543 | if (mtu != -1)
|
---|
544 | duparg("mtu", *argv);
|
---|
545 | if (get_integer(&mtu, *argv, 0))
|
---|
546 | invarg_1_to_2(*argv, "mtu");
|
---|
547 | addattr_l(&req->n, sizeof(*req), IFLA_MTU, &mtu, 4);
|
---|
548 | } else if (strcmp(*argv, "netns") == 0) {
|
---|
549 | NEXT_ARG();
|
---|
550 | if (netns != -1)
|
---|
551 | duparg("netns", *argv);
|
---|
552 | if ((netns = get_netns_fd(*argv)) >= 0)
|
---|
553 | addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_FD, &netns, 4);
|
---|
554 | else if (get_integer(&netns, *argv, 0) == 0)
|
---|
555 | addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_PID, &netns, 4);
|
---|
556 | else
|
---|
557 | invarg_1_to_2(*argv, "netns");
|
---|
558 | } else if (strcmp(*argv, "multicast") == 0) {
|
---|
559 | NEXT_ARG();
|
---|
560 | req->i.ifi_change |= IFF_MULTICAST;
|
---|
561 | if (strcmp(*argv, "on") == 0) {
|
---|
562 | req->i.ifi_flags |= IFF_MULTICAST;
|
---|
563 | } else if (strcmp(*argv, "off") == 0) {
|
---|
564 | req->i.ifi_flags &= ~IFF_MULTICAST;
|
---|
565 | } else
|
---|
566 | return on_off("multicast", *argv);
|
---|
567 | } else if (strcmp(*argv, "allmulticast") == 0) {
|
---|
568 | NEXT_ARG();
|
---|
569 | req->i.ifi_change |= IFF_ALLMULTI;
|
---|
570 | if (strcmp(*argv, "on") == 0) {
|
---|
571 | req->i.ifi_flags |= IFF_ALLMULTI;
|
---|
572 | } else if (strcmp(*argv, "off") == 0) {
|
---|
573 | req->i.ifi_flags &= ~IFF_ALLMULTI;
|
---|
574 | } else
|
---|
575 | return on_off("allmulticast", *argv);
|
---|
576 | } else if (strcmp(*argv, "promisc") == 0) {
|
---|
577 | NEXT_ARG();
|
---|
578 | req->i.ifi_change |= IFF_PROMISC;
|
---|
579 | if (strcmp(*argv, "on") == 0) {
|
---|
580 | req->i.ifi_flags |= IFF_PROMISC;
|
---|
581 | } else if (strcmp(*argv, "off") == 0) {
|
---|
582 | req->i.ifi_flags &= ~IFF_PROMISC;
|
---|
583 | } else
|
---|
584 | return on_off("promisc", *argv);
|
---|
585 | } else if (strcmp(*argv, "trailers") == 0) {
|
---|
586 | NEXT_ARG();
|
---|
587 | req->i.ifi_change |= IFF_NOTRAILERS;
|
---|
588 | if (strcmp(*argv, "off") == 0) {
|
---|
589 | req->i.ifi_flags |= IFF_NOTRAILERS;
|
---|
590 | } else if (strcmp(*argv, "on") == 0) {
|
---|
591 | req->i.ifi_flags &= ~IFF_NOTRAILERS;
|
---|
592 | } else
|
---|
593 | return on_off("trailers", *argv);
|
---|
594 | } else if (strcmp(*argv, "arp") == 0) {
|
---|
595 | NEXT_ARG();
|
---|
596 | req->i.ifi_change |= IFF_NOARP;
|
---|
597 | if (strcmp(*argv, "on") == 0) {
|
---|
598 | req->i.ifi_flags &= ~IFF_NOARP;
|
---|
599 | } else if (strcmp(*argv, "off") == 0) {
|
---|
600 | req->i.ifi_flags |= IFF_NOARP;
|
---|
601 | } else
|
---|
602 | return on_off("noarp", *argv);
|
---|
603 | } else if (strcmp(*argv, "vf") == 0) {
|
---|
604 | struct rtattr *vflist;
|
---|
605 | NEXT_ARG();
|
---|
606 | if (get_integer(&vf, *argv, 0)) {
|
---|
607 | invarg_1_to_2(*argv, "vf");
|
---|
608 | }
|
---|
609 | vflist = addattr_nest(&req->n, sizeof(*req),
|
---|
610 | IFLA_VFINFO_LIST);
|
---|
611 | len = iplink_parse_vf(vf, &argc, &argv, req);
|
---|
612 | if (len < 0)
|
---|
613 | return -1;
|
---|
614 | addattr_nest_end(&req->n, vflist);
|
---|
615 | } else if (matches(*argv, "master") == 0) {
|
---|
616 | int ifindex;
|
---|
617 | NEXT_ARG();
|
---|
618 | ifindex = ll_name_to_index(*argv);
|
---|
619 | if (!ifindex)
|
---|
620 | invarg_1_to_2(*argv, "master");
|
---|
621 | addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
|
---|
622 | &ifindex, 4);
|
---|
623 | } else if (matches(*argv, "nomaster") == 0) {
|
---|
624 | int ifindex = 0;
|
---|
625 | addattr_l(&req->n, sizeof(*req), IFLA_MASTER,
|
---|
626 | &ifindex, 4);
|
---|
627 | } else if (matches(*argv, "dynamic") == 0) {
|
---|
628 | NEXT_ARG();
|
---|
629 | req->i.ifi_change |= IFF_DYNAMIC;
|
---|
630 | if (strcmp(*argv, "on") == 0) {
|
---|
631 | req->i.ifi_flags |= IFF_DYNAMIC;
|
---|
632 | } else if (strcmp(*argv, "off") == 0) {
|
---|
633 | req->i.ifi_flags &= ~IFF_DYNAMIC;
|
---|
634 | } else
|
---|
635 | return on_off("dynamic", *argv);
|
---|
636 | } else if (matches(*argv, "alias") == 0) {
|
---|
637 | NEXT_ARG();
|
---|
638 | addattr_l(&req->n, sizeof(*req), IFLA_IFALIAS,
|
---|
639 | *argv, strlen(*argv));
|
---|
640 | argc--; argv++;
|
---|
641 | break;
|
---|
642 | } else if (strcmp(*argv, "group") == 0) {
|
---|
643 | NEXT_ARG();
|
---|
644 | if (*group != -1)
|
---|
645 | duparg("group", *argv);
|
---|
646 | if (rtnl_group_a2n(group, *argv))
|
---|
647 | invarg_1_to_2(*argv, "group");
|
---|
648 | } else if (strcmp(*argv, "mode") == 0) {
|
---|
649 | int mode;
|
---|
650 | NEXT_ARG();
|
---|
651 | mode = get_link_mode(*argv);
|
---|
652 | if (mode < 0)
|
---|
653 | invarg_1_to_2(*argv, "mode");
|
---|
654 | addattr8(&req->n, sizeof(*req), IFLA_LINKMODE, mode);
|
---|
655 | } else if (strcmp(*argv, "state") == 0) {
|
---|
656 | int state;
|
---|
657 | NEXT_ARG();
|
---|
658 | state = get_operstate(*argv);
|
---|
659 | if (state < 0)
|
---|
660 | invarg_1_to_2(*argv, "state");
|
---|
661 | addattr8(&req->n, sizeof(*req), IFLA_OPERSTATE, state);
|
---|
662 | } else if (matches(*argv, "numtxqueues") == 0) {
|
---|
663 | NEXT_ARG();
|
---|
664 | if (numtxqueues != -1)
|
---|
665 | duparg("numtxqueues", *argv);
|
---|
666 | if (get_integer(&numtxqueues, *argv, 0))
|
---|
667 | invarg_1_to_2(*argv, "numtxqueues");
|
---|
668 | addattr_l(&req->n, sizeof(*req), IFLA_NUM_TX_QUEUES,
|
---|
669 | &numtxqueues, 4);
|
---|
670 | } else if (matches(*argv, "numrxqueues") == 0) {
|
---|
671 | NEXT_ARG();
|
---|
672 | if (numrxqueues != -1)
|
---|
673 | duparg("numrxqueues", *argv);
|
---|
674 | if (get_integer(&numrxqueues, *argv, 0))
|
---|
675 | invarg_1_to_2(*argv, "numrxqueues");
|
---|
676 | addattr_l(&req->n, sizeof(*req), IFLA_NUM_RX_QUEUES,
|
---|
677 | &numrxqueues, 4);
|
---|
678 | }
|
---|
679 | #endif
|
---|
680 |
|
---|
681 | /* Return value becomes exitcode. It's okay to not return at all */
|
---|
682 | int FAST_FUNC do_iplink(char **argv)
|
---|
683 | {
|
---|
684 | static const char keywords[] ALIGN1 =
|
---|
685 | "add\0""delete\0""set\0""show\0""lst\0""list\0";
|
---|
686 | if (*argv) {
|
---|
687 | int key = index_in_substrings(keywords, *argv);
|
---|
688 | if (key < 0) /* invalid argument */
|
---|
689 | invarg_1_to_2(*argv, applet_name);
|
---|
690 | argv++;
|
---|
691 | if (key <= 1) /* add/delete */
|
---|
692 | return do_add_or_delete(argv, key ? RTM_DELLINK : RTM_NEWLINK);
|
---|
693 | if (key == 2) /* set */
|
---|
694 | return do_set(argv);
|
---|
695 | }
|
---|
696 | /* show, lst, list */
|
---|
697 | return ipaddr_list_link(argv);
|
---|
698 | }
|
---|