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f579559b TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <netinet/ether.h> | |
23 | #include <linux/if.h> | |
4cc7a82c | 24 | #include <unistd.h> |
f579559b | 25 | |
f579559b | 26 | #include "util.h" |
505f8da7 | 27 | #include "virt.h" |
5a8bcb67 | 28 | #include "fileio.h" |
1346b1f0 | 29 | #include "bus-util.h" |
5a8bcb67 LP |
30 | #include "udev-util.h" |
31 | #include "libudev-private.h" | |
c6f7c917 | 32 | #include "network-internal.h" |
5a8bcb67 LP |
33 | #include "networkd-link.h" |
34 | #include "networkd-netdev.h" | |
ed942a9e | 35 | #include "conf-parser.h" |
fe8db0c5 TG |
36 | #include "dhcp-lease-internal.h" |
37 | ||
78c958f8 TG |
38 | static bool link_dhcp6_enabled(Link *link) { |
39 | if (link->flags & IFF_LOOPBACK) | |
40 | return false; | |
41 | ||
42 | if (!link->network) | |
43 | return false; | |
44 | ||
45 | return IN_SET(link->network->dhcp, DHCP_SUPPORT_V6, DHCP_SUPPORT_BOTH); | |
46 | } | |
47 | ||
48 | static bool link_dhcp4_enabled(Link *link) { | |
49 | if (link->flags & IFF_LOOPBACK) | |
50 | return false; | |
51 | ||
52 | if (!link->network) | |
53 | return false; | |
54 | ||
55 | return IN_SET(link->network->dhcp, DHCP_SUPPORT_V4, DHCP_SUPPORT_BOTH); | |
56 | } | |
57 | ||
58 | static bool link_dhcp4_server_enabled(Link *link) { | |
59 | if (link->flags & IFF_LOOPBACK) | |
60 | return false; | |
61 | ||
62 | if (!link->network) | |
63 | return false; | |
64 | ||
65 | return link->network->dhcp_server; | |
66 | } | |
67 | ||
68 | static bool link_ipv4ll_enabled(Link *link) { | |
69 | if (link->flags & IFF_LOOPBACK) | |
70 | return false; | |
71 | ||
72 | if (!link->network) | |
73 | return false; | |
74 | ||
75 | return link->network->ipv4ll; | |
76 | } | |
77 | ||
ce43e484 SS |
78 | static bool link_lldp_enabled(Link *link) { |
79 | if (link->flags & IFF_LOOPBACK) | |
80 | return false; | |
81 | ||
82 | if (!link->network) | |
83 | return false; | |
84 | ||
5a8bcb67 | 85 | if (link->network->bridge) |
ce43e484 SS |
86 | return false; |
87 | ||
88 | return link->network->lldp; | |
89 | } | |
90 | ||
5a8bcb67 LP |
91 | static bool link_ip_forward_enabled(Link *link) { |
92 | if (link->flags & IFF_LOOPBACK) | |
93 | return false; | |
94 | ||
95 | if (!link->network) | |
96 | return false; | |
97 | ||
98 | return link->network->ip_forward; | |
99 | } | |
100 | ||
51d18171 TG |
101 | #define FLAG_STRING(string, flag, old, new) \ |
102 | (((old ^ new) & flag) \ | |
103 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
104 | : "") | |
105 | ||
106 | static int link_update_flags(Link *link, sd_rtnl_message *m) { | |
107 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; | |
108 | uint8_t operstate; | |
109 | int r; | |
110 | ||
111 | assert(link); | |
112 | ||
113 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
114 | if (r < 0) { | |
79008bdd | 115 | log_link_warning(link, "Could not get link flags"); |
51d18171 TG |
116 | return r; |
117 | } | |
118 | ||
119 | r = sd_rtnl_message_read_u8(m, IFLA_OPERSTATE, &operstate); | |
120 | if (r < 0) | |
121 | /* if we got a message without operstate, take it to mean | |
122 | the state was unchanged */ | |
123 | operstate = link->kernel_operstate; | |
124 | ||
125 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
126 | return 0; | |
127 | ||
128 | if (link->flags != flags) { | |
79008bdd | 129 | log_link_debug(link, "flags change:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", |
51d18171 TG |
130 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
131 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
132 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
133 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
134 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
135 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
136 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
137 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
138 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
139 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
140 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
141 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
142 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
143 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
144 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
145 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
146 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
147 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
148 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
149 | ||
150 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
151 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
152 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
153 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
154 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
155 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
156 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
157 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
158 | ||
159 | /* link flags are currently at most 18 bits, let's align to | |
160 | * printing 20 */ | |
161 | if (unknown_flags_added) | |
79008bdd | 162 | log_link_debug(link, |
51d18171 TG |
163 | "unknown link flags gained: %#.5x (ignoring)", |
164 | unknown_flags_added); | |
165 | ||
166 | if (unknown_flags_removed) | |
79008bdd | 167 | log_link_debug(link, |
51d18171 TG |
168 | "unknown link flags lost: %#.5x (ignoring)", |
169 | unknown_flags_removed); | |
170 | } | |
171 | ||
172 | link->flags = flags; | |
173 | link->kernel_operstate = operstate; | |
174 | ||
175 | link_save(link); | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
505f8da7 | 180 | static int link_new(Manager *manager, sd_rtnl_message *message, Link **ret) { |
14b746f7 | 181 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 182 | uint16_t type; |
ca4e095a | 183 | const char *ifname; |
505f8da7 | 184 | int r, ifindex; |
f579559b | 185 | |
0c2f9b84 | 186 | assert(manager); |
505f8da7 | 187 | assert(message); |
f579559b TG |
188 | assert(ret); |
189 | ||
505f8da7 TG |
190 | r = sd_rtnl_message_get_type(message, &type); |
191 | if (r < 0) | |
192 | return r; | |
193 | else if (type != RTM_NEWLINK) | |
194 | return -EINVAL; | |
195 | ||
196 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
197 | if (r < 0) | |
198 | return r; | |
199 | else if (ifindex <= 0) | |
200 | return -EINVAL; | |
201 | ||
202 | r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &ifname); | |
203 | if (r < 0) | |
204 | return r; | |
205 | ||
f579559b TG |
206 | link = new0(Link, 1); |
207 | if (!link) | |
208 | return -ENOMEM; | |
209 | ||
14b746f7 | 210 | link->n_ref = 1; |
5a3eb5a7 | 211 | link->manager = manager; |
8434fd5c | 212 | link->state = LINK_STATE_PENDING; |
505f8da7 TG |
213 | link->ifindex = ifindex; |
214 | link->ifname = strdup(ifname); | |
215 | if (!link->ifname) | |
216 | return -ENOMEM; | |
f579559b | 217 | |
512922f8 TG |
218 | r = sd_rtnl_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
219 | if (r < 0) | |
79008bdd | 220 | log_link_debug(link, "MAC address not found for new device, continuing without"); |
512922f8 | 221 | |
3c9b8860 TG |
222 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", |
223 | link->ifindex); | |
fe8db0c5 | 224 | if (r < 0) |
315db1a8 | 225 | return -ENOMEM; |
fe8db0c5 | 226 | |
3c9b8860 TG |
227 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", |
228 | link->ifindex); | |
68a8723c TG |
229 | if (r < 0) |
230 | return -ENOMEM; | |
231 | ||
49699bac SS |
232 | r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", |
233 | link->ifindex); | |
234 | if (r < 0) | |
235 | return -ENOMEM; | |
236 | ||
237 | ||
d5099efc | 238 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
239 | if (r < 0) |
240 | return r; | |
241 | ||
242 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
243 | if (r < 0) |
244 | return r; | |
245 | ||
51d18171 TG |
246 | r = link_update_flags(link, message); |
247 | if (r < 0) | |
248 | return r; | |
249 | ||
f579559b TG |
250 | *ret = link; |
251 | link = NULL; | |
252 | ||
253 | return 0; | |
254 | } | |
255 | ||
14b746f7 | 256 | static void link_free(Link *link) { |
428fd0a7 TG |
257 | Address *address; |
258 | ||
f579559b TG |
259 | if (!link) |
260 | return; | |
261 | ||
428fd0a7 TG |
262 | while ((address = link->addresses)) { |
263 | LIST_REMOVE(addresses, link->addresses, address); | |
264 | address_free(address); | |
265 | } | |
266 | ||
11bf3cce LP |
267 | while ((address = link->pool_addresses)) { |
268 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
269 | address_free(address); | |
270 | } | |
271 | ||
bfcdba8d | 272 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 273 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 274 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 275 | |
68a8723c TG |
276 | unlink(link->lease_file); |
277 | free(link->lease_file); | |
278 | ||
49699bac SS |
279 | unlink(link->lldp_file); |
280 | free(link->lldp_file); | |
281 | ||
56cd007a | 282 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 283 | sd_dhcp6_client_unref(link->dhcp6_client); |
6b66097b | 284 | sd_icmp6_nd_unref(link->icmp6_router_discovery); |
4138fb2c | 285 | |
28aeb07f | 286 | if (link->manager) |
ae06ab10 | 287 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 288 | |
c166a070 | 289 | free(link->ifname); |
68a8723c TG |
290 | |
291 | unlink(link->state_file); | |
fe8db0c5 | 292 | free(link->state_file); |
c166a070 | 293 | |
b5db00e5 UTL |
294 | udev_device_unref(link->udev_device); |
295 | ||
f579559b TG |
296 | free(link); |
297 | } | |
298 | ||
14b746f7 TG |
299 | Link *link_unref(Link *link) { |
300 | if (link && (-- link->n_ref <= 0)) | |
301 | link_free(link); | |
302 | ||
303 | return NULL; | |
304 | } | |
305 | ||
306 | Link *link_ref(Link *link) { | |
307 | if (link) | |
308 | assert_se(++ link->n_ref >= 2); | |
309 | ||
310 | return link; | |
311 | } | |
312 | ||
11a7f229 TG |
313 | int link_get(Manager *m, int ifindex, Link **ret) { |
314 | Link *link; | |
11a7f229 TG |
315 | |
316 | assert(m); | |
11a7f229 TG |
317 | assert(ifindex); |
318 | assert(ret); | |
319 | ||
ae06ab10 | 320 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
321 | if (!link) |
322 | return -ENODEV; | |
323 | ||
324 | *ret = link; | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
370e9930 TG |
329 | void link_drop(Link *link) { |
330 | if (!link || link->state == LINK_STATE_LINGER) | |
331 | return; | |
332 | ||
333 | link->state = LINK_STATE_LINGER; | |
334 | ||
79008bdd | 335 | log_link_debug(link, "link removed"); |
370e9930 TG |
336 | |
337 | link_unref(link); | |
338 | ||
339 | return; | |
340 | } | |
341 | ||
57bd6899 TG |
342 | static void link_enter_unmanaged(Link *link) { |
343 | assert(link); | |
344 | ||
79008bdd | 345 | log_link_debug(link, "unmanaged"); |
57bd6899 TG |
346 | |
347 | link->state = LINK_STATE_UNMANAGED; | |
348 | ||
349 | link_save(link); | |
350 | } | |
351 | ||
111bb8f9 TG |
352 | static int link_stop_clients(Link *link) { |
353 | int r = 0, k; | |
354 | ||
355 | assert(link); | |
356 | assert(link->manager); | |
357 | assert(link->manager->event); | |
358 | ||
359 | if (!link->network) | |
360 | return 0; | |
361 | ||
ba179154 | 362 | if (link->dhcp_client) { |
111bb8f9 TG |
363 | k = sd_dhcp_client_stop(link->dhcp_client); |
364 | if (k < 0) { | |
79008bdd | 365 | log_link_warning(link, "Could not stop DHCPv4 client: %s", |
3c9b8860 | 366 | strerror(-r)); |
111bb8f9 TG |
367 | r = k; |
368 | } | |
369 | } | |
370 | ||
ba179154 | 371 | if (link->ipv4ll) { |
111bb8f9 TG |
372 | k = sd_ipv4ll_stop(link->ipv4ll); |
373 | if (k < 0) { | |
79008bdd | 374 | log_link_warning(link, "Could not stop IPv4 link-local: %s", |
3c9b8860 | 375 | strerror(-r)); |
111bb8f9 | 376 | r = k; |
dd43110f TG |
377 | } |
378 | } | |
379 | ||
ba179154 | 380 | if(link->icmp6_router_discovery) { |
1873a3d3 PF |
381 | |
382 | if (link->dhcp6_client) { | |
383 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
384 | if (k < 0) { | |
79008bdd | 385 | log_link_warning(link, "Could not stop DHCPv6 client: %s", |
3c9b8860 | 386 | strerror(-r)); |
1873a3d3 PF |
387 | r = k; |
388 | } | |
389 | } | |
4138fb2c | 390 | |
1873a3d3 | 391 | k = sd_icmp6_nd_stop(link->icmp6_router_discovery); |
4138fb2c | 392 | if (k < 0) { |
79008bdd | 393 | log_link_warning(link, |
3c9b8860 TG |
394 | "Could not stop ICMPv6 router discovery: %s", |
395 | strerror(-r)); | |
4138fb2c PF |
396 | r = k; |
397 | } | |
398 | } | |
399 | ||
ce43e484 SS |
400 | if (link->lldp) { |
401 | ||
402 | k = sd_lldp_stop(link->lldp); | |
403 | if (k < 0) { | |
404 | log_link_warning(link, "Could not stop LLDP : %s", | |
405 | strerror(-r)); | |
406 | r = k; | |
407 | } | |
408 | } | |
409 | ||
111bb8f9 TG |
410 | return r; |
411 | } | |
412 | ||
b22d8a00 | 413 | void link_enter_failed(Link *link) { |
ef1ba606 | 414 | assert(link); |
f882c247 | 415 | |
370e9930 | 416 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
417 | return; |
418 | ||
79008bdd | 419 | log_link_warning(link, "failed"); |
449f7554 | 420 | |
ef1ba606 | 421 | link->state = LINK_STATE_FAILED; |
fe8db0c5 | 422 | |
111bb8f9 TG |
423 | link_stop_clients(link); |
424 | ||
fe8db0c5 | 425 | link_save(link); |
f882c247 TG |
426 | } |
427 | ||
4f434938 LP |
428 | static Address* link_find_dhcp_server_address(Link *link) { |
429 | Address *address; | |
430 | ||
431 | assert(link); | |
432 | assert(link->network); | |
433 | ||
434 | /* The the first statically configured address if there is any */ | |
435 | LIST_FOREACH(addresses, address, link->network->static_addresses) { | |
436 | ||
437 | if (address->family != AF_INET) | |
438 | continue; | |
439 | ||
af93291c | 440 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
441 | continue; |
442 | ||
443 | return address; | |
444 | } | |
445 | ||
446 | /* If that didn't work, find a suitable address we got from the pool */ | |
447 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
448 | if (address->family != AF_INET) | |
449 | continue; | |
450 | ||
451 | return address; | |
452 | } | |
453 | ||
454 | return NULL; | |
455 | } | |
456 | ||
dd43110f TG |
457 | static int link_enter_configured(Link *link) { |
458 | int r; | |
459 | ||
460 | assert(link); | |
461 | assert(link->network); | |
462 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
463 | ||
78c958f8 | 464 | if (link_dhcp4_server_enabled(link) && |
7c16313f | 465 | !sd_dhcp_server_is_running(link->dhcp_server)) { |
4f434938 LP |
466 | struct in_addr pool_start; |
467 | Address *address; | |
468 | ||
469 | address = link_find_dhcp_server_address(link); | |
470 | if (!address) { | |
79008bdd | 471 | log_link_warning(link, |
3c9b8860 | 472 | "Failed to find suitable address for DHCPv4 server instance."); |
4f434938 LP |
473 | link_enter_failed(link); |
474 | return 0; | |
475 | } | |
476 | ||
79008bdd | 477 | log_link_debug(link, "offering DHCPv4 leases"); |
dd43110f | 478 | |
3c9b8860 TG |
479 | r = sd_dhcp_server_set_address(link->dhcp_server, |
480 | &address->in_addr.in, | |
481 | address->prefixlen); | |
4f434938 LP |
482 | if (r < 0) |
483 | return r; | |
484 | ||
485 | /* offer 32 addresses starting from the address following the server address */ | |
486 | pool_start.s_addr = htobe32(be32toh(address->in_addr.in.s_addr) + 1); | |
487 | r = sd_dhcp_server_set_lease_pool(link->dhcp_server, | |
488 | &pool_start, 32); | |
489 | if (r < 0) | |
490 | return r; | |
491 | ||
492 | /* TODO: | |
493 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
494 | &main_address->in_addr.in); | |
495 | if (r < 0) | |
496 | return r; | |
497 | ||
498 | r = sd_dhcp_server_set_prefixlen(link->dhcp_server, | |
499 | main_address->prefixlen); | |
500 | if (r < 0) | |
501 | return r; | |
502 | */ | |
503 | ||
dd43110f TG |
504 | r = sd_dhcp_server_start(link->dhcp_server); |
505 | if (r < 0) { | |
79008bdd | 506 | log_link_warning(link, "could not start DHCPv4 server " |
dd43110f TG |
507 | "instance: %s", strerror(-r)); |
508 | ||
509 | link_enter_failed(link); | |
510 | ||
511 | return 0; | |
512 | } | |
513 | } | |
514 | ||
79008bdd | 515 | log_link_info(link, "link configured"); |
dd43110f TG |
516 | |
517 | link->state = LINK_STATE_CONFIGURED; | |
518 | ||
519 | link_save(link); | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
3c9b8860 TG |
524 | void link_client_handler(Link *link) { |
525 | assert(link); | |
526 | assert(link->network); | |
527 | ||
528 | if (!link->static_configured) | |
529 | return; | |
530 | ||
78c958f8 | 531 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
532 | if (!link->ipv4ll_address || |
533 | !link->ipv4ll_route) | |
534 | return; | |
535 | ||
78c958f8 | 536 | if (link_dhcp4_enabled(link) && !link->dhcp4_configured) |
3c9b8860 TG |
537 | return; |
538 | ||
9fdaa992 TG |
539 | if (link->state != LINK_STATE_CONFIGURED) |
540 | link_enter_configured(link); | |
3c9b8860 TG |
541 | |
542 | return; | |
543 | } | |
544 | ||
f882c247 | 545 | static int route_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
5da8149f | 546 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
547 | int r; |
548 | ||
3c9b8860 | 549 | assert(link->link_messages > 0); |
370e9930 TG |
550 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
551 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
552 | LINK_STATE_LINGER)); | |
f882c247 | 553 | |
3c9b8860 | 554 | link->link_messages --; |
f882c247 | 555 | |
77a008c0 | 556 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
557 | return 1; |
558 | ||
559 | r = sd_rtnl_message_get_errno(m); | |
c166a070 | 560 | if (r < 0 && r != -EEXIST) |
6c861f0a | 561 | log_link_warning_errno(link, -r, "%-*s: could not set route: %m", IFNAMSIZ, link->ifname); |
f882c247 | 562 | |
3c9b8860 | 563 | if (link->link_messages == 0) { |
79008bdd | 564 | log_link_debug(link, "routes set"); |
3c9b8860 TG |
565 | link->static_configured = true; |
566 | link_client_handler(link); | |
dd3efc09 | 567 | } |
f882c247 TG |
568 | |
569 | return 1; | |
570 | } | |
571 | ||
572 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 573 | Route *rt; |
f882c247 TG |
574 | int r; |
575 | ||
576 | assert(link); | |
577 | assert(link->network); | |
ef1ba606 | 578 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 579 | |
ef1ba606 | 580 | link->state = LINK_STATE_SETTING_ROUTES; |
f882c247 | 581 | |
3d3d4255 | 582 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 583 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 584 | if (r < 0) { |
79008bdd | 585 | log_link_warning(link, |
3c9b8860 | 586 | "could not set routes: %s", |
b1666580 | 587 | strerror(-r)); |
3c9b8860 | 588 | link_enter_failed(link); |
a6cc569e TG |
589 | return r; |
590 | } | |
591 | ||
3c9b8860 | 592 | link->link_messages ++; |
8ddbeaa2 | 593 | } |
f5be5601 | 594 | |
3c9b8860 TG |
595 | if (link->link_messages == 0) { |
596 | link->static_configured = true; | |
597 | link_client_handler(link); | |
431ca2ce | 598 | } else |
79008bdd | 599 | log_link_debug(link, "setting routes"); |
f882c247 TG |
600 | |
601 | return 0; | |
602 | } | |
603 | ||
b22d8a00 | 604 | int link_route_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
5da8149f | 605 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
606 | int r; |
607 | ||
608 | assert(m); | |
609 | assert(link); | |
610 | assert(link->ifname); | |
611 | ||
5da8149f | 612 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
613 | return 1; |
614 | ||
615 | r = sd_rtnl_message_get_errno(m); | |
b90b025a | 616 | if (r < 0 && r != -ESRCH) |
6c861f0a | 617 | log_link_warning_errno(link, -r, "%-*s: could not drop route: %m", IFNAMSIZ, link->ifname); |
5c1d3fc9 | 618 | |
5bdd314c | 619 | return 1; |
5c1d3fc9 UTL |
620 | } |
621 | ||
f882c247 | 622 | static int address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
5da8149f | 623 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
624 | int r; |
625 | ||
4958aee4 | 626 | assert(rtnl); |
f5be5601 TG |
627 | assert(m); |
628 | assert(link); | |
629 | assert(link->ifname); | |
3c9b8860 | 630 | assert(link->link_messages > 0); |
370e9930 TG |
631 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
632 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 633 | |
3c9b8860 | 634 | link->link_messages --; |
f882c247 | 635 | |
5da8149f | 636 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
637 | return 1; |
638 | ||
639 | r = sd_rtnl_message_get_errno(m); | |
c166a070 | 640 | if (r < 0 && r != -EEXIST) |
6c861f0a | 641 | log_link_warning_errno(link, -r, "%-*s: could not set address: %m", IFNAMSIZ, link->ifname); |
45af44d4 TG |
642 | else if (r >= 0) |
643 | link_rtnl_process_address(rtnl, m, link->manager); | |
f882c247 | 644 | |
3c9b8860 | 645 | if (link->link_messages == 0) { |
79008bdd | 646 | log_link_debug(link, "addresses set"); |
ef1ba606 | 647 | link_enter_set_routes(link); |
dd3efc09 | 648 | } |
f882c247 TG |
649 | |
650 | return 1; | |
651 | } | |
652 | ||
653 | static int link_enter_set_addresses(Link *link) { | |
a6cc569e | 654 | Address *ad; |
f882c247 TG |
655 | int r; |
656 | ||
657 | assert(link); | |
658 | assert(link->network); | |
f5be5601 | 659 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 660 | |
ef1ba606 | 661 | link->state = LINK_STATE_SETTING_ADDRESSES; |
f882c247 | 662 | |
3d3d4255 | 663 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
a6cc569e | 664 | r = address_configure(ad, link, &address_handler); |
dd3efc09 | 665 | if (r < 0) { |
5a8bcb67 | 666 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
667 | link_enter_failed(link); |
668 | return r; | |
669 | } | |
670 | ||
3c9b8860 | 671 | link->link_messages ++; |
f882c247 TG |
672 | } |
673 | ||
3c9b8860 | 674 | if (link->link_messages == 0) { |
431ca2ce TG |
675 | link_enter_set_routes(link); |
676 | } else | |
79008bdd | 677 | log_link_debug(link, "setting addresses"); |
431ca2ce | 678 | |
f882c247 TG |
679 | return 0; |
680 | } | |
681 | ||
b22d8a00 | 682 | int link_address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
5da8149f | 683 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
684 | int r; |
685 | ||
686 | assert(m); | |
687 | assert(link); | |
688 | assert(link->ifname); | |
689 | ||
5da8149f | 690 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
691 | return 1; |
692 | ||
693 | r = sd_rtnl_message_get_errno(m); | |
b90b025a | 694 | if (r < 0 && r != -EADDRNOTAVAIL) |
6c861f0a | 695 | log_link_warning_errno(link, -r, "%-*s: could not drop address: %m", IFNAMSIZ, link->ifname); |
ff254138 | 696 | |
5bdd314c | 697 | return 1; |
ff254138 TG |
698 | } |
699 | ||
b98b483b AR |
700 | static int link_set_bridge_fdb(const Link *const link) { |
701 | FdbEntry *fdb_entry; | |
702 | int r = 0; | |
703 | ||
704 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
705 | r = fdb_entry_configure(link->manager->rtnl, fdb_entry, link->ifindex); | |
706 | if(r < 0) { | |
707 | log_link_error(link, "Failed to add MAC entry to static MAC table: %s", strerror(-r)); | |
708 | break; | |
709 | } | |
710 | } | |
711 | ||
712 | return r; | |
713 | } | |
714 | ||
e1853b00 SS |
715 | static int link_set_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
716 | _cleanup_link_unref_ Link *link = userdata; | |
717 | int r; | |
718 | ||
00e8d83a | 719 | log_link_debug(link, "set link"); |
e1853b00 SS |
720 | |
721 | r = sd_rtnl_message_get_errno(m); | |
722 | if (r < 0 && r != -EEXIST) { | |
00e8d83a | 723 | log_link_struct(link, LOG_ERR, |
e1853b00 SS |
724 | "MESSAGE=%-*s: could not join netdev: %s", |
725 | IFNAMSIZ, | |
726 | link->ifname, strerror(-r), | |
727 | "ERRNO=%d", -r, | |
728 | NULL); | |
729 | link_enter_failed(link); | |
730 | return 1; | |
731 | } | |
732 | ||
733 | return 0; | |
734 | } | |
735 | ||
3c9b8860 TG |
736 | static int set_hostname_handler(sd_bus *bus, sd_bus_message *m, void *userdata, |
737 | sd_bus_error *ret_error) { | |
5da8149f | 738 | _cleanup_link_unref_ Link *link = userdata; |
1346b1f0 TG |
739 | int r; |
740 | ||
b226d99b TG |
741 | assert(link); |
742 | ||
5da8149f | 743 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 744 | return 1; |
370e9930 | 745 | |
1346b1f0 | 746 | r = sd_bus_message_get_errno(m); |
70b34f5d | 747 | if (r > 0) |
79008bdd | 748 | log_link_warning(link, "Could not set hostname: %s", |
3c9b8860 | 749 | strerror(r)); |
1346b1f0 TG |
750 | |
751 | return 1; | |
752 | } | |
753 | ||
3c9b8860 | 754 | int link_set_hostname(Link *link, const char *hostname) { |
1346b1f0 TG |
755 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
756 | int r = 0; | |
757 | ||
b226d99b TG |
758 | assert(link); |
759 | assert(link->manager); | |
1346b1f0 TG |
760 | assert(hostname); |
761 | ||
79008bdd | 762 | log_link_debug(link, "Setting transient hostname: '%s'", hostname); |
1346b1f0 | 763 | |
3c9b8860 TG |
764 | if (!link->manager->bus) { |
765 | /* TODO: replace by assert when we can rely on kdbus */ | |
79008bdd | 766 | log_link_info(link, |
3c9b8860 | 767 | "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
768 | return 0; |
769 | } | |
770 | ||
1346b1f0 | 771 | r = sd_bus_message_new_method_call( |
b226d99b | 772 | link->manager->bus, |
151b9b96 | 773 | &m, |
1346b1f0 TG |
774 | "org.freedesktop.hostname1", |
775 | "/org/freedesktop/hostname1", | |
776 | "org.freedesktop.hostname1", | |
151b9b96 | 777 | "SetHostname"); |
1346b1f0 TG |
778 | if (r < 0) |
779 | return r; | |
780 | ||
781 | r = sd_bus_message_append(m, "sb", hostname, false); | |
782 | if (r < 0) | |
783 | return r; | |
784 | ||
3c9b8860 TG |
785 | r = sd_bus_call_async(link->manager->bus, NULL, m, set_hostname_handler, |
786 | link, 0); | |
5da8149f | 787 | if (r < 0) { |
79008bdd | 788 | log_link_error(link, "Could not set transient hostname: %s", |
3c9b8860 | 789 | strerror(-r)); |
5da8149f TG |
790 | return r; |
791 | } | |
b226d99b TG |
792 | |
793 | link_ref(link); | |
1346b1f0 | 794 | |
5da8149f | 795 | return 0; |
1346b1f0 TG |
796 | } |
797 | ||
4f882b2a | 798 | static int set_mtu_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
5da8149f | 799 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
800 | int r; |
801 | ||
802 | assert(m); | |
803 | assert(link); | |
804 | assert(link->ifname); | |
805 | ||
5da8149f | 806 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
807 | return 1; |
808 | ||
809 | r = sd_rtnl_message_get_errno(m); | |
c9ccc19f | 810 | if (r < 0) |
6c861f0a | 811 | log_link_warning_errno(link, -r, "%-*s: could not set MTU: %m", IFNAMSIZ, link->ifname); |
4f882b2a TG |
812 | |
813 | return 1; | |
814 | } | |
815 | ||
3c9b8860 | 816 | int link_set_mtu(Link *link, uint32_t mtu) { |
cf6a8911 | 817 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
4f882b2a TG |
818 | int r; |
819 | ||
820 | assert(link); | |
821 | assert(link->manager); | |
822 | assert(link->manager->rtnl); | |
823 | ||
79008bdd | 824 | log_link_debug(link, "setting MTU: %" PRIu32, mtu); |
4f882b2a | 825 | |
151b9b96 LP |
826 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, |
827 | RTM_SETLINK, link->ifindex); | |
4f882b2a | 828 | if (r < 0) { |
79008bdd | 829 | log_link_error(link, "Could not allocate RTM_SETLINK message"); |
4f882b2a TG |
830 | return r; |
831 | } | |
832 | ||
833 | r = sd_rtnl_message_append_u32(req, IFLA_MTU, mtu); | |
834 | if (r < 0) { | |
79008bdd | 835 | log_link_error(link, "Could not append MTU: %s", strerror(-r)); |
4f882b2a TG |
836 | return r; |
837 | } | |
838 | ||
3c9b8860 TG |
839 | r = sd_rtnl_call_async(link->manager->rtnl, req, set_mtu_handler, link, |
840 | 0, NULL); | |
4f882b2a | 841 | if (r < 0) { |
79008bdd | 842 | log_link_error(link, |
3c9b8860 TG |
843 | "Could not send rtnetlink message: %s", |
844 | strerror(-r)); | |
4f882b2a TG |
845 | return r; |
846 | } | |
847 | ||
ae941762 | 848 | link_ref(link); |
b226d99b | 849 | |
4f882b2a TG |
850 | return 0; |
851 | } | |
852 | ||
e1853b00 SS |
853 | static int link_set_bridge(Link *link) { |
854 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; | |
855 | int r; | |
856 | ||
857 | assert(link); | |
858 | assert(link->network); | |
859 | ||
860 | if(link->network->cost == 0) | |
861 | return 0; | |
862 | ||
863 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
864 | RTM_SETLINK, link->ifindex); | |
865 | if (r < 0) { | |
00e8d83a | 866 | log_link_error(link, "Could not allocate RTM_SETLINK message"); |
e1853b00 SS |
867 | return r; |
868 | } | |
869 | ||
870 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
871 | if (r < 0) { | |
00e8d83a | 872 | log_link_error(link, |
e1853b00 SS |
873 | "Could not set message family %s", strerror(-r)); |
874 | return r; | |
875 | } | |
876 | ||
877 | r = sd_rtnl_message_open_container(req, IFLA_PROTINFO); | |
878 | if (r < 0) { | |
00e8d83a | 879 | log_link_error(link, |
e1853b00 SS |
880 | "Could not append IFLA_PROTINFO attribute: %s", |
881 | strerror(-r)); | |
882 | return r; | |
883 | } | |
884 | ||
885 | if(link->network->cost != 0) { | |
886 | r = sd_rtnl_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); | |
887 | if (r < 0) { | |
00e8d83a | 888 | log_link_error(link, |
e1853b00 SS |
889 | "Could not append IFLA_BRPORT_COST attribute: %s", |
890 | strerror(-r)); | |
891 | return r; | |
892 | } | |
893 | } | |
894 | ||
895 | r = sd_rtnl_message_close_container(req); | |
896 | if (r < 0) { | |
00e8d83a | 897 | log_link_error(link, |
e1853b00 SS |
898 | "Could not append IFLA_LINKINFO attribute: %s", |
899 | strerror(-r)); | |
900 | return r; | |
901 | } | |
902 | ||
903 | r = sd_rtnl_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); | |
904 | if (r < 0) { | |
00e8d83a | 905 | log_link_error(link, |
e1853b00 SS |
906 | "Could not send rtnetlink message: %s", |
907 | strerror(-r)); | |
908 | return r; | |
909 | } | |
910 | ||
911 | link_ref(link); | |
912 | ||
913 | return r; | |
914 | } | |
915 | ||
49699bac SS |
916 | static void lldp_handler(sd_lldp *lldp, int event, void *userdata) { |
917 | Link *link = userdata; | |
918 | int r; | |
919 | ||
920 | assert(link); | |
921 | assert(link->network); | |
922 | assert(link->manager); | |
923 | ||
924 | if (event != UPDATE_INFO) | |
925 | return; | |
926 | ||
927 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
928 | if (r < 0) | |
929 | log_link_warning(link, "could not save LLDP"); | |
930 | ||
931 | } | |
932 | ||
ff254138 TG |
933 | static int link_acquire_conf(Link *link) { |
934 | int r; | |
935 | ||
936 | assert(link); | |
937 | assert(link->network); | |
ff254138 TG |
938 | assert(link->manager); |
939 | assert(link->manager->event); | |
940 | ||
78c958f8 | 941 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 942 | assert(link->ipv4ll); |
ff254138 | 943 | |
79008bdd | 944 | log_link_debug(link, "acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
945 | |
946 | r = sd_ipv4ll_start(link->ipv4ll); | |
124fa2c6 | 947 | if (r < 0) { |
79008bdd | 948 | log_link_warning(link, "could not acquire IPv4 " |
124fa2c6 | 949 | "link-local address"); |
ff254138 | 950 | return r; |
124fa2c6 | 951 | } |
5c1d3fc9 UTL |
952 | } |
953 | ||
78c958f8 | 954 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 955 | assert(link->dhcp_client); |
ff254138 | 956 | |
79008bdd | 957 | log_link_debug(link, "acquiring DHCPv4 lease"); |
ab47d620 | 958 | |
5c1d3fc9 | 959 | r = sd_dhcp_client_start(link->dhcp_client); |
124fa2c6 | 960 | if (r < 0) { |
79008bdd | 961 | log_link_warning(link, "could not acquire DHCPv4 " |
124fa2c6 | 962 | "lease"); |
5c1d3fc9 | 963 | return r; |
124fa2c6 | 964 | } |
5c1d3fc9 | 965 | } |
ff254138 | 966 | |
78c958f8 | 967 | if (link_dhcp6_enabled(link)) { |
4138fb2c PF |
968 | assert(link->icmp6_router_discovery); |
969 | ||
79008bdd | 970 | log_link_debug(link, "discovering IPv6 routers"); |
4138fb2c PF |
971 | |
972 | r = sd_icmp6_router_solicitation_start(link->icmp6_router_discovery); | |
973 | if (r < 0) { | |
79008bdd | 974 | log_link_warning(link, |
3c9b8860 | 975 | "could not start IPv6 router discovery"); |
4138fb2c PF |
976 | return r; |
977 | } | |
978 | } | |
979 | ||
ce43e484 SS |
980 | if (link_lldp_enabled(link)) { |
981 | assert(link->lldp); | |
982 | ||
983 | log_link_debug(link, "Starting LLDP"); | |
984 | ||
985 | r = sd_lldp_start(link->lldp); | |
986 | if (r < 0) { | |
987 | log_link_warning(link, "could not start LLDP "); | |
988 | return r; | |
989 | } | |
990 | } | |
991 | ||
ff254138 TG |
992 | return 0; |
993 | } | |
994 | ||
a61bb41c | 995 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
996 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
997 | ||
a61bb41c | 998 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
999 | return true; |
1000 | ||
a61bb41c | 1001 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1002 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1003 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1004 | return true; |
1005 | ||
1006 | return false; | |
1007 | } | |
1008 | ||
dd3efc09 | 1009 | static int link_up_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
5da8149f | 1010 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1011 | int r; |
1012 | ||
1746cf2a TG |
1013 | assert(link); |
1014 | ||
5da8149f | 1015 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1016 | return 1; |
1017 | ||
dd3efc09 | 1018 | r = sd_rtnl_message_get_errno(m); |
45ad2c13 | 1019 | if (r < 0) { |
9b86b393 TG |
1020 | /* we warn but don't fail the link, as it may |
1021 | be brought up later */ | |
6c861f0a | 1022 | log_link_warning_errno(link, -r, "%-*s: could not bring up interface: %m", IFNAMSIZ, link->ifname); |
45ad2c13 TG |
1023 | } |
1024 | ||
f882c247 TG |
1025 | return 1; |
1026 | } | |
1027 | ||
1028 | static int link_up(Link *link) { | |
cf6a8911 | 1029 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
f579559b TG |
1030 | int r; |
1031 | ||
f882c247 | 1032 | assert(link); |
c106cc36 | 1033 | assert(link->network); |
f882c247 TG |
1034 | assert(link->manager); |
1035 | assert(link->manager->rtnl); | |
1036 | ||
79008bdd | 1037 | log_link_debug(link, "bringing link up"); |
449f7554 | 1038 | |
151b9b96 LP |
1039 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, |
1040 | RTM_SETLINK, link->ifindex); | |
f579559b | 1041 | if (r < 0) { |
79008bdd | 1042 | log_link_error(link, "Could not allocate RTM_SETLINK message"); |
f579559b TG |
1043 | return r; |
1044 | } | |
1045 | ||
5d4795f3 | 1046 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
fc25d7f8 | 1047 | if (r < 0) { |
79008bdd | 1048 | log_link_error(link, "Could not set link flags: %s", |
3c9b8860 | 1049 | strerror(-r)); |
fc25d7f8 TG |
1050 | return r; |
1051 | } | |
1052 | ||
c106cc36 TG |
1053 | if (link->network->mac) { |
1054 | r = sd_rtnl_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); | |
1055 | if (r < 0) { | |
1056 | log_link_error(link, "Could not set MAC address: %s", strerror(-r)); | |
1057 | return r; | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | if (link->network->mtu) { | |
1062 | r = sd_rtnl_message_append_u32(req, IFLA_MTU, link->network->mtu); | |
1063 | if (r < 0) { | |
1064 | log_link_error(link, "Could not set MTU: %s", strerror(-r)); | |
1065 | return r; | |
1066 | } | |
1067 | } | |
1068 | ||
3c9b8860 TG |
1069 | r = sd_rtnl_call_async(link->manager->rtnl, req, link_up_handler, link, |
1070 | 0, NULL); | |
f579559b | 1071 | if (r < 0) { |
79008bdd | 1072 | log_link_error(link, |
3c9b8860 TG |
1073 | "Could not send rtnetlink message: %s", |
1074 | strerror(-r)); | |
f579559b TG |
1075 | return r; |
1076 | } | |
1077 | ||
b226d99b TG |
1078 | link_ref(link); |
1079 | ||
f882c247 TG |
1080 | return 0; |
1081 | } | |
1082 | ||
3f265037 | 1083 | static int link_joined(Link *link) { |
f882c247 TG |
1084 | int r; |
1085 | ||
ef1ba606 | 1086 | assert(link); |
f5be5601 | 1087 | assert(link->network); |
dd3efc09 | 1088 | |
505f8da7 TG |
1089 | if (!(link->flags & IFF_UP)) { |
1090 | r = link_up(link); | |
1091 | if (r < 0) { | |
1092 | link_enter_failed(link); | |
1093 | return r; | |
1094 | } | |
ef1ba606 | 1095 | } |
f882c247 | 1096 | |
e1853b00 SS |
1097 | if(link->network->bridge) { |
1098 | r = link_set_bridge(link); | |
1099 | if (r < 0) { | |
00e8d83a | 1100 | log_link_error(link, |
e1853b00 SS |
1101 | "Could not set bridge message: %s", |
1102 | strerror(-r)); | |
1103 | } | |
1104 | } | |
1105 | ||
fb6730c4 | 1106 | return link_enter_set_addresses(link); |
02b59d57 TG |
1107 | } |
1108 | ||
3c9b8860 TG |
1109 | static int netdev_join_handler(sd_rtnl *rtnl, sd_rtnl_message *m, |
1110 | void *userdata) { | |
5da8149f | 1111 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1112 | int r; |
1113 | ||
1746cf2a | 1114 | assert(link); |
ef1ba606 | 1115 | assert(link->network); |
02b59d57 | 1116 | |
52433f6b TG |
1117 | link->enslaving --; |
1118 | ||
5da8149f | 1119 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1120 | return 1; |
1121 | ||
1122 | r = sd_rtnl_message_get_errno(m); | |
856f962c | 1123 | if (r < 0 && r != -EEXIST) { |
6c861f0a | 1124 | log_link_error_errno(link, -r, "%-*s: could not join netdev: %m", IFNAMSIZ, link->ifname); |
ef1ba606 TG |
1125 | link_enter_failed(link); |
1126 | return 1; | |
ba179154 | 1127 | } else |
79008bdd | 1128 | log_link_debug(link, "joined netdev"); |
02b59d57 | 1129 | |
856f962c | 1130 | if (link->enslaving <= 0) |
3f265037 | 1131 | link_joined(link); |
02b59d57 TG |
1132 | |
1133 | return 1; | |
1134 | } | |
1135 | ||
3f265037 | 1136 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1137 | NetDev *netdev; |
672682a6 | 1138 | Iterator i; |
02b59d57 TG |
1139 | int r; |
1140 | ||
1141 | assert(link); | |
1142 | assert(link->network); | |
8434fd5c | 1143 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1144 | |
52433f6b | 1145 | link->state = LINK_STATE_ENSLAVING; |
02b59d57 | 1146 | |
fe8db0c5 TG |
1147 | link_save(link); |
1148 | ||
7951dea2 SS |
1149 | if (!link->network->bridge && |
1150 | !link->network->bond && | |
6a0a2f86 | 1151 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1152 | return link_joined(link); |
02b59d57 | 1153 | |
d9c67ea1 | 1154 | if (link->network->bond) { |
6c861f0a | 1155 | log_link_struct(link, LOG_DEBUG, |
97578344 | 1156 | "MESSAGE=%-*s: enslaving by '%s'", |
987efa17 | 1157 | IFNAMSIZ, |
af4e9e2c | 1158 | link->ifname, link->network->bond->ifname, |
aa9f1140 | 1159 | NETDEVIF(link->network->bond), |
52433f6b | 1160 | NULL); |
449f7554 | 1161 | |
3f265037 | 1162 | r = netdev_join(link->network->bond, link, &netdev_join_handler); |
52433f6b | 1163 | if (r < 0) { |
6c861f0a | 1164 | log_link_struct(link, LOG_WARNING, |
3f265037 | 1165 | "MESSAGE=%-*s: could not join netdev '%s': %s", |
987efa17 | 1166 | IFNAMSIZ, |
3c9b8860 TG |
1167 | link->ifname, link->network->bond->ifname, |
1168 | strerror(-r), | |
aa9f1140 | 1169 | NETDEVIF(link->network->bond), |
52433f6b TG |
1170 | NULL); |
1171 | link_enter_failed(link); | |
1172 | return r; | |
1173 | } | |
1174 | ||
0ad6148e MO |
1175 | link->enslaving ++; |
1176 | } | |
1177 | ||
d9c67ea1 | 1178 | if (link->network->bridge) { |
6c861f0a | 1179 | log_link_struct(link, LOG_DEBUG, |
97578344 | 1180 | "MESSAGE=%-*s: enslaving by '%s'", |
987efa17 | 1181 | IFNAMSIZ, |
af4e9e2c | 1182 | link->ifname, link->network->bridge->ifname, |
aa9f1140 | 1183 | NETDEVIF(link->network->bridge), |
0ad6148e MO |
1184 | NULL); |
1185 | ||
3c9b8860 TG |
1186 | r = netdev_join(link->network->bridge, link, |
1187 | &netdev_join_handler); | |
0ad6148e | 1188 | if (r < 0) { |
6c861f0a | 1189 | log_link_struct(link, LOG_WARNING, |
3f265037 | 1190 | "MESSAGE=%-*s: could not join netdev '%s': %s", |
987efa17 | 1191 | IFNAMSIZ, |
3c9b8860 TG |
1192 | link->ifname, link->network->bridge->ifname, |
1193 | strerror(-r), | |
aa9f1140 | 1194 | NETDEVIF(link->network->bridge), |
0ad6148e MO |
1195 | NULL); |
1196 | link_enter_failed(link); | |
1197 | return r; | |
1198 | } | |
1199 | ||
52433f6b TG |
1200 | link->enslaving ++; |
1201 | } | |
1202 | ||
6a0a2f86 | 1203 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
6c861f0a | 1204 | log_link_struct(link, LOG_DEBUG, |
97578344 | 1205 | "MESSAGE=%-*s: enslaving by '%s'", |
987efa17 | 1206 | IFNAMSIZ, |
3c9b8860 TG |
1207 | link->ifname, netdev->ifname, NETDEVIF(netdev), |
1208 | NULL); | |
7951dea2 | 1209 | |
6a0a2f86 | 1210 | r = netdev_join(netdev, link, &netdev_join_handler); |
7951dea2 | 1211 | if (r < 0) { |
6c861f0a | 1212 | log_link_struct(link, LOG_WARNING, |
3f265037 | 1213 | "MESSAGE=%-*s: could not join netdev '%s': %s", |
987efa17 | 1214 | IFNAMSIZ, |
3c9b8860 TG |
1215 | link->ifname, netdev->ifname, |
1216 | strerror(-r), | |
6a0a2f86 | 1217 | NETDEVIF(netdev), NULL); |
326cb406 SS |
1218 | link_enter_failed(link); |
1219 | return r; | |
1220 | } | |
1221 | ||
326cb406 SS |
1222 | link->enslaving ++; |
1223 | } | |
1224 | ||
ef1ba606 TG |
1225 | return 0; |
1226 | } | |
1227 | ||
5a8bcb67 LP |
1228 | static int link_set_ip_forward(Link *link) { |
1229 | const char *p = NULL; | |
1230 | int r; | |
1231 | ||
1232 | p = strappenda("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding"); | |
1233 | r = write_string_file_no_create(p, link_ip_forward_enabled(link) ? "1" : "0"); | |
1234 | if (r < 0) | |
1235 | log_link_warning_errno(link, r, "Cannot configure IP forwarding for interface: %m"); | |
1236 | ||
1237 | return 0; | |
1238 | } | |
1239 | ||
a748b692 | 1240 | static int link_configure(Link *link) { |
02b59d57 TG |
1241 | int r; |
1242 | ||
ef1ba606 | 1243 | assert(link); |
b22d8a00 | 1244 | assert(link->network); |
8434fd5c | 1245 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 1246 | |
b98b483b AR |
1247 | r = link_set_bridge_fdb(link); |
1248 | if (r < 0) | |
1249 | return r; | |
1250 | ||
5a8bcb67 LP |
1251 | r = link_set_ip_forward(link); |
1252 | if (r < 0) | |
1253 | return r; | |
1254 | ||
78c958f8 | 1255 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 1256 | r = ipv4ll_configure(link); |
eb34d4af TG |
1257 | if (r < 0) |
1258 | return r; | |
1259 | } | |
1260 | ||
78c958f8 | 1261 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 1262 | r = dhcp4_configure(link); |
eb34d4af TG |
1263 | if (r < 0) |
1264 | return r; | |
eb34d4af TG |
1265 | } |
1266 | ||
78c958f8 | 1267 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
1268 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
1269 | if (r < 0) | |
1270 | return r; | |
1271 | ||
1272 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
1273 | if (r < 0) | |
1274 | return r; | |
dd43110f TG |
1275 | } |
1276 | ||
78c958f8 | 1277 | if (link_dhcp6_enabled(link)) { |
5c79bd79 | 1278 | r = icmp6_configure(link); |
4138fb2c PF |
1279 | if (r < 0) |
1280 | return r; | |
1281 | } | |
1282 | ||
ce43e484 SS |
1283 | if (link_lldp_enabled(link)) { |
1284 | r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp); | |
1285 | if (r < 0) | |
1286 | return r; | |
1287 | ||
1288 | r = sd_lldp_attach_event(link->lldp, NULL, 0); | |
1289 | if (r < 0) | |
1290 | return r; | |
49699bac SS |
1291 | |
1292 | r = sd_lldp_set_callback(link->lldp, | |
1293 | lldp_handler, link); | |
1294 | if (r < 0) | |
1295 | return r; | |
ce43e484 SS |
1296 | } |
1297 | ||
a61bb41c | 1298 | if (link_has_carrier(link)) { |
1e9be60b TG |
1299 | r = link_acquire_conf(link); |
1300 | if (r < 0) | |
1301 | return r; | |
cc544d5f | 1302 | } |
1e9be60b | 1303 | |
3f265037 | 1304 | return link_enter_join_netdev(link); |
505f8da7 TG |
1305 | } |
1306 | ||
3c9b8860 TG |
1307 | static int link_initialized_and_synced(sd_rtnl *rtnl, sd_rtnl_message *m, |
1308 | void *userdata) { | |
5da8149f | 1309 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 1310 | Network *network; |
505f8da7 TG |
1311 | int r; |
1312 | ||
1313 | assert(link); | |
1314 | assert(link->ifname); | |
1315 | assert(link->manager); | |
1316 | ||
8434fd5c | 1317 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 1318 | return 1; |
505f8da7 | 1319 | |
79008bdd | 1320 | log_link_debug(link, "link state is up-to-date"); |
505f8da7 | 1321 | |
3c9b8860 TG |
1322 | r = network_get(link->manager, link->udev_device, link->ifname, |
1323 | &link->mac, &network); | |
57bd6899 TG |
1324 | if (r == -ENOENT) { |
1325 | link_enter_unmanaged(link); | |
5da8149f | 1326 | return 1; |
57bd6899 TG |
1327 | } else if (r < 0) |
1328 | return r; | |
505f8da7 | 1329 | |
bd2efe92 | 1330 | if (link->flags & IFF_LOOPBACK) { |
78c958f8 | 1331 | if (network->ipv4ll) |
79008bdd | 1332 | log_link_debug(link, "ignoring IPv4LL for loopback link"); |
78c958f8 TG |
1333 | |
1334 | if (network->dhcp != DHCP_SUPPORT_NONE) | |
79008bdd | 1335 | log_link_debug(link, "ignoring DHCP clients for loopback link"); |
78c958f8 TG |
1336 | |
1337 | if (network->dhcp_server) | |
79008bdd | 1338 | log_link_debug(link, "ignoring DHCP server for loopback link"); |
bd2efe92 TG |
1339 | } |
1340 | ||
505f8da7 TG |
1341 | r = network_apply(link->manager, network, link); |
1342 | if (r < 0) | |
1343 | return r; | |
1344 | ||
a748b692 TG |
1345 | r = link_configure(link); |
1346 | if (r < 0) | |
1347 | return r; | |
1348 | ||
5da8149f | 1349 | return 1; |
505f8da7 TG |
1350 | } |
1351 | ||
4f561e8e TG |
1352 | int link_initialized(Link *link, struct udev_device *device) { |
1353 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; | |
1354 | int r; | |
1355 | ||
1356 | assert(link); | |
1357 | assert(link->manager); | |
1358 | assert(link->manager->rtnl); | |
1359 | assert(device); | |
1360 | ||
8434fd5c | 1361 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
1362 | return 0; |
1363 | ||
679b3605 TG |
1364 | if (link->udev_device) |
1365 | return 0; | |
1366 | ||
79008bdd | 1367 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
1368 | |
1369 | link->udev_device = udev_device_ref(device); | |
1370 | ||
3c9b8860 TG |
1371 | /* udev has initialized the link, but we don't know if we have yet |
1372 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
1373 | * when it returns we know that the pending NEWLINKs have already been | |
1374 | * processed and that we are up-to-date */ | |
4f561e8e | 1375 | |
3c9b8860 TG |
1376 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
1377 | link->ifindex); | |
4f561e8e TG |
1378 | if (r < 0) |
1379 | return r; | |
1380 | ||
3c9b8860 TG |
1381 | r = sd_rtnl_call_async(link->manager->rtnl, req, |
1382 | link_initialized_and_synced, link, 0, NULL); | |
4f561e8e TG |
1383 | if (r < 0) |
1384 | return r; | |
1385 | ||
5da8149f TG |
1386 | link_ref(link); |
1387 | ||
4f561e8e TG |
1388 | return 0; |
1389 | } | |
1390 | ||
5a8bcb67 LP |
1391 | static Address* link_get_equal_address(Link *link, Address *needle) { |
1392 | Address *i; | |
1393 | ||
1394 | assert(link); | |
1395 | assert(needle); | |
1396 | ||
1397 | LIST_FOREACH(addresses, i, link->addresses) | |
1398 | if (address_equal(i, needle)) | |
1399 | return i; | |
1400 | ||
1401 | return NULL; | |
1402 | } | |
1403 | ||
45af44d4 | 1404 | int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) { |
fbbeb65a TG |
1405 | Manager *m = userdata; |
1406 | Link *link = NULL; | |
1407 | uint16_t type; | |
1408 | _cleanup_address_free_ Address *address = NULL; | |
5a8bcb67 LP |
1409 | Address *existing; |
1410 | char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX]; | |
c6d3b303 | 1411 | const char *valid_str = NULL; |
fbbeb65a TG |
1412 | int r, ifindex; |
1413 | ||
1414 | assert(rtnl); | |
1415 | assert(message); | |
1416 | assert(m); | |
1417 | ||
45af44d4 TG |
1418 | if (sd_rtnl_message_is_error(message)) { |
1419 | r = sd_rtnl_message_get_errno(message); | |
1420 | if (r < 0) | |
1421 | log_warning_errno(r, "rtnl: failed to receive address: %m"); | |
1422 | ||
1423 | return 0; | |
1424 | } | |
1425 | ||
fbbeb65a TG |
1426 | r = sd_rtnl_message_get_type(message, &type); |
1427 | if (r < 0) { | |
1428 | log_warning("rtnl: could not get message type"); | |
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | r = sd_rtnl_message_addr_get_ifindex(message, &ifindex); | |
45af44d4 TG |
1433 | if (r < 0) { |
1434 | log_warning_errno(r, "rtnl: could not get ifindex: %m"); | |
1435 | return 0; | |
1436 | } else if (ifindex <= 0) { | |
1437 | log_warning("rtnl: received address message with invalid ifindex: %d", ifindex); | |
fbbeb65a TG |
1438 | return 0; |
1439 | } else { | |
1440 | r = link_get(m, ifindex, &link); | |
1441 | if (r < 0 || !link) { | |
1e19f352 | 1442 | log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex); |
fbbeb65a TG |
1443 | return 0; |
1444 | } | |
1445 | } | |
1446 | ||
1447 | r = address_new_dynamic(&address); | |
1448 | if (r < 0) | |
393c0c5e | 1449 | return r; |
fbbeb65a TG |
1450 | |
1451 | r = sd_rtnl_message_addr_get_family(message, &address->family); | |
1452 | if (r < 0 || !IN_SET(address->family, AF_INET, AF_INET6)) { | |
5a8bcb67 | 1453 | log_link_warning(link, "rtnl: received address with invalid family, ignoring"); |
fbbeb65a TG |
1454 | return 0; |
1455 | } | |
1456 | ||
1457 | r = sd_rtnl_message_addr_get_prefixlen(message, &address->prefixlen); | |
1458 | if (r < 0) { | |
5a8bcb67 | 1459 | log_link_warning(link, "rtnl: received address with invalid prefixlen, ignoring"); |
e375dcde TG |
1460 | return 0; |
1461 | } | |
1462 | ||
1463 | r = sd_rtnl_message_addr_get_scope(message, &address->scope); | |
1464 | if (r < 0) { | |
5a8bcb67 | 1465 | log_link_warning(link, "rtnl: received address with invalid scope, ignoring"); |
fbbeb65a TG |
1466 | return 0; |
1467 | } | |
1468 | ||
81163121 TG |
1469 | r = sd_rtnl_message_addr_get_flags(message, &address->flags); |
1470 | if (r < 0) { | |
5a8bcb67 | 1471 | log_link_warning(link, "rtnl: received address with invalid flags, ignoring"); |
81163121 TG |
1472 | return 0; |
1473 | } | |
1474 | ||
fbbeb65a TG |
1475 | switch (address->family) { |
1476 | case AF_INET: | |
5a8bcb67 | 1477 | r = sd_rtnl_message_read_in_addr(message, IFA_LOCAL, &address->in_addr.in); |
fbbeb65a | 1478 | if (r < 0) { |
5a8bcb67 | 1479 | log_link_warning(link, "rtnl: received address without valid address, ignoring"); |
fbbeb65a TG |
1480 | return 0; |
1481 | } | |
1482 | ||
1483 | break; | |
1484 | ||
1485 | case AF_INET6: | |
5a8bcb67 | 1486 | r = sd_rtnl_message_read_in6_addr(message, IFA_ADDRESS, &address->in_addr.in6); |
fbbeb65a | 1487 | if (r < 0) { |
5a8bcb67 | 1488 | log_link_warning(link, "rtnl: received address without valid address, ignoring"); |
fbbeb65a TG |
1489 | return 0; |
1490 | } | |
1491 | ||
1492 | break; | |
1493 | ||
1494 | default: | |
1495 | assert_not_reached("invalid address family"); | |
1496 | } | |
1497 | ||
5a8bcb67 | 1498 | if (!inet_ntop(address->family, &address->in_addr, buf, INET6_ADDRSTRLEN)) { |
79008bdd | 1499 | log_link_warning(link, "could not print address"); |
fbbeb65a TG |
1500 | return 0; |
1501 | } | |
1502 | ||
5a8bcb67 | 1503 | r = sd_rtnl_message_read_cache_info(message, IFA_CACHEINFO, &address->cinfo); |
c6d3b303 TG |
1504 | if (r >= 0) { |
1505 | if (address->cinfo.ifa_valid == CACHE_INFO_INFINITY_LIFE_TIME) | |
1506 | valid_str = "ever"; | |
1507 | else | |
1508 | valid_str = format_timespan(valid_buf, FORMAT_TIMESPAN_MAX, | |
1509 | address->cinfo.ifa_valid * USEC_PER_SEC, | |
1510 | USEC_PER_SEC); | |
1511 | } | |
1512 | ||
5a8bcb67 LP |
1513 | existing = link_get_equal_address(link, address); |
1514 | ||
1515 | switch (type) { | |
1516 | case RTM_NEWADDR: | |
1517 | if (existing) { | |
1518 | log_link_debug(link, "Updating address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); | |
428fd0a7 | 1519 | |
428fd0a7 | 1520 | |
5a8bcb67 LP |
1521 | existing->scope = address->scope; |
1522 | existing->flags = address->flags; | |
1523 | existing->cinfo = address->cinfo; | |
428fd0a7 | 1524 | |
5a8bcb67 LP |
1525 | } else { |
1526 | log_link_debug(link, "Adding address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); | |
428fd0a7 | 1527 | |
5a8bcb67 LP |
1528 | LIST_PREPEND(addresses, link->addresses, address); |
1529 | address_establish(address, link); | |
fbbeb65a | 1530 | |
5a8bcb67 | 1531 | address = NULL; |
428fd0a7 | 1532 | |
5a8bcb67 LP |
1533 | link_save(link); |
1534 | } | |
f5602be9 | 1535 | |
428fd0a7 | 1536 | break; |
5a8bcb67 | 1537 | |
fbbeb65a | 1538 | case RTM_DELADDR: |
428fd0a7 | 1539 | |
5a8bcb67 LP |
1540 | if (existing) { |
1541 | log_link_debug(link, "Removing address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); | |
1542 | address_release(existing, link); | |
1543 | LIST_REMOVE(addresses, link->addresses, existing); | |
1544 | address_free(existing); | |
393c0c5e | 1545 | } else |
5a8bcb67 | 1546 | log_link_warning(link, "Removing non-existent address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); |
f5602be9 | 1547 | |
fbbeb65a TG |
1548 | break; |
1549 | default: | |
1550 | assert_not_reached("Received invalid RTNL message type"); | |
1551 | } | |
1552 | ||
1553 | return 1; | |
1554 | } | |
1555 | ||
505f8da7 TG |
1556 | int link_add(Manager *m, sd_rtnl_message *message, Link **ret) { |
1557 | Link *link; | |
1558 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
1559 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
1560 | int r; | |
1561 | ||
1562 | assert(m); | |
fbbeb65a | 1563 | assert(m->rtnl); |
505f8da7 TG |
1564 | assert(message); |
1565 | assert(ret); | |
1566 | ||
1567 | r = link_new(m, message, ret); | |
1568 | if (r < 0) | |
1569 | return r; | |
1570 | ||
1571 | link = *ret; | |
1572 | ||
79008bdd | 1573 | log_link_debug(link, "link %d added", link->ifindex); |
505f8da7 TG |
1574 | |
1575 | if (detect_container(NULL) <= 0) { | |
1576 | /* not in a container, udev will be around */ | |
ae06ab10 | 1577 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 TG |
1578 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
1579 | if (!device) { | |
79008bdd | 1580 | log_link_warning(link, |
3c9b8860 | 1581 | "could not find udev device: %m"); |
9fecce80 | 1582 | return -errno; |
505f8da7 TG |
1583 | } |
1584 | ||
3c4cb064 | 1585 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 1586 | /* not yet ready */ |
79008bdd | 1587 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 1588 | return 0; |
3c4cb064 | 1589 | } |
505f8da7 | 1590 | |
4f561e8e TG |
1591 | r = link_initialized(link, device); |
1592 | if (r < 0) | |
1593 | return r; | |
1594 | } else { | |
5da8149f TG |
1595 | /* we are calling a callback directly, so must take a ref */ |
1596 | link_ref(link); | |
1597 | ||
4f561e8e TG |
1598 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
1599 | if (r < 0) | |
1600 | return r; | |
1601 | } | |
505f8da7 | 1602 | |
a748b692 TG |
1603 | return 0; |
1604 | } | |
1605 | ||
22936833 | 1606 | int link_update(Link *link, sd_rtnl_message *m) { |
c49b33ac | 1607 | struct ether_addr mac; |
ca4e095a | 1608 | const char *ifname; |
afe7fd56 | 1609 | uint32_t mtu; |
a61bb41c | 1610 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
1611 | int r; |
1612 | ||
dd3efc09 | 1613 | assert(link); |
b8941f74 | 1614 | assert(link->ifname); |
22936833 TG |
1615 | assert(m); |
1616 | ||
7619683b TG |
1617 | if (link->state == LINK_STATE_LINGER) { |
1618 | link_ref(link); | |
79008bdd | 1619 | log_link_info(link, "link readded"); |
7619683b TG |
1620 | link->state = LINK_STATE_ENSLAVING; |
1621 | } | |
1622 | ||
b8941f74 TG |
1623 | r = sd_rtnl_message_read_string(m, IFLA_IFNAME, &ifname); |
1624 | if (r >= 0 && !streq(ifname, link->ifname)) { | |
79008bdd | 1625 | log_link_info(link, "renamed to %s", ifname); |
b8941f74 TG |
1626 | |
1627 | free(link->ifname); | |
1628 | link->ifname = strdup(ifname); | |
1629 | if (!link->ifname) | |
1630 | return -ENOMEM; | |
1631 | } | |
1632 | ||
afe7fd56 TG |
1633 | r = sd_rtnl_message_read_u32(m, IFLA_MTU, &mtu); |
1634 | if (r >= 0 && mtu > 0) { | |
1635 | link->mtu = mtu; | |
1636 | if (!link->original_mtu) { | |
1637 | link->original_mtu = mtu; | |
79008bdd | 1638 | log_link_debug(link, "saved original MTU: %" |
afe7fd56 TG |
1639 | PRIu32, link->original_mtu); |
1640 | } | |
1641 | ||
1642 | if (link->dhcp_client) { | |
3c9b8860 TG |
1643 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
1644 | link->mtu); | |
afe7fd56 | 1645 | if (r < 0) { |
79008bdd | 1646 | log_link_warning(link, |
3c9b8860 | 1647 | "Could not update MTU in DHCP client: %s", |
afe7fd56 TG |
1648 | strerror(-r)); |
1649 | return r; | |
1650 | } | |
1651 | } | |
9842de0d | 1652 | } |
69629de9 | 1653 | |
e9189a1f TG |
1654 | /* The kernel may broadcast NEWLINK messages without the MAC address |
1655 | set, simply ignore them. */ | |
c49b33ac | 1656 | r = sd_rtnl_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 1657 | if (r >= 0) { |
3c9b8860 TG |
1658 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
1659 | ETH_ALEN)) { | |
c49b33ac | 1660 | |
3c9b8860 TG |
1661 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
1662 | ETH_ALEN); | |
c49b33ac | 1663 | |
79008bdd | 1664 | log_link_debug(link, "MAC address: " |
20861203 TG |
1665 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
1666 | mac.ether_addr_octet[0], | |
1667 | mac.ether_addr_octet[1], | |
1668 | mac.ether_addr_octet[2], | |
1669 | mac.ether_addr_octet[3], | |
1670 | mac.ether_addr_octet[4], | |
1671 | mac.ether_addr_octet[5]); | |
c49b33ac | 1672 | |
20861203 TG |
1673 | if (link->ipv4ll) { |
1674 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
1675 | if (r < 0) { | |
79008bdd | 1676 | log_link_warning(link, |
3c9b8860 | 1677 | "Could not update MAC address in IPv4LL client: %s", |
20861203 TG |
1678 | strerror(-r)); |
1679 | return r; | |
1680 | } | |
c49b33ac | 1681 | } |
c49b33ac | 1682 | |
20861203 | 1683 | if (link->dhcp_client) { |
3c9b8860 | 1684 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
1685 | (const uint8_t *) &link->mac, |
1686 | sizeof (link->mac), | |
1687 | ARPHRD_ETHER); | |
20861203 | 1688 | if (r < 0) { |
79008bdd | 1689 | log_link_warning(link, |
3c9b8860 | 1690 | "Could not update MAC address in DHCP client: %s", |
20861203 TG |
1691 | strerror(-r)); |
1692 | return r; | |
1693 | } | |
c49b33ac | 1694 | } |
4138fb2c PF |
1695 | |
1696 | if (link->dhcp6_client) { | |
1697 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
1698 | (const uint8_t *) &link->mac, |
1699 | sizeof (link->mac), | |
1700 | ARPHRD_ETHER); | |
4138fb2c | 1701 | if (r < 0) { |
79008bdd | 1702 | log_link_warning(link, |
3c9b8860 | 1703 | "Could not update MAC address in DHCPv6 client: %s", |
4138fb2c PF |
1704 | strerror(-r)); |
1705 | return r; | |
1706 | } | |
1707 | } | |
c49b33ac | 1708 | } |
4f882b2a TG |
1709 | } |
1710 | ||
a61bb41c TG |
1711 | had_carrier = link_has_carrier(link); |
1712 | ||
1713 | r = link_update_flags(link, m); | |
1714 | if (r < 0) | |
1715 | return r; | |
1716 | ||
1717 | carrier_gained = !had_carrier && link_has_carrier(link); | |
1718 | carrier_lost = had_carrier && !link_has_carrier(link); | |
1719 | ||
1720 | if (carrier_gained) { | |
79008bdd | 1721 | log_link_info(link, "gained carrier"); |
a61bb41c TG |
1722 | |
1723 | if (link->network) { | |
1724 | r = link_acquire_conf(link); | |
1725 | if (r < 0) { | |
1726 | link_enter_failed(link); | |
1727 | return r; | |
1728 | } | |
1729 | } | |
1730 | } else if (carrier_lost) { | |
79008bdd | 1731 | log_link_info(link, "lost carrier"); |
a61bb41c TG |
1732 | |
1733 | r = link_stop_clients(link); | |
1734 | if (r < 0) { | |
1735 | link_enter_failed(link); | |
1736 | return r; | |
1737 | } | |
1738 | } | |
1739 | ||
1740 | return 0; | |
dd3efc09 | 1741 | } |
fe8db0c5 | 1742 | |
e375dcde TG |
1743 | static void link_update_operstate(Link *link) { |
1744 | ||
1745 | assert(link); | |
1746 | ||
1747 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
1748 | link->operstate = LINK_OPERSTATE_DORMANT; | |
a61bb41c | 1749 | else if (link_has_carrier(link)) { |
e375dcde TG |
1750 | Address *address; |
1751 | uint8_t scope = RT_SCOPE_NOWHERE; | |
1752 | ||
1753 | /* if we have carrier, check what addresses we have */ | |
1754 | LIST_FOREACH(addresses, address, link->addresses) { | |
81163121 TG |
1755 | if (address->flags & (IFA_F_TENTATIVE | IFA_F_DEPRECATED)) |
1756 | continue; | |
1757 | ||
e375dcde TG |
1758 | if (address->scope < scope) |
1759 | scope = address->scope; | |
1760 | } | |
1761 | ||
1762 | if (scope < RT_SCOPE_SITE) | |
1763 | /* universally accessible addresses found */ | |
1764 | link->operstate = LINK_OPERSTATE_ROUTABLE; | |
1765 | else if (scope < RT_SCOPE_HOST) | |
1766 | /* only link or site local addresses found */ | |
1767 | link->operstate = LINK_OPERSTATE_DEGRADED; | |
1768 | else | |
1769 | /* no useful addresses found */ | |
1770 | link->operstate = LINK_OPERSTATE_CARRIER; | |
54cba0b1 | 1771 | } else if (link->flags & IFF_UP) |
d3df0e39 | 1772 | link->operstate = LINK_OPERSTATE_NO_CARRIER; |
54cba0b1 | 1773 | else |
d3df0e39 | 1774 | link->operstate = LINK_OPERSTATE_OFF; |
e375dcde TG |
1775 | } |
1776 | ||
fe8db0c5 | 1777 | int link_save(Link *link) { |
68a8723c | 1778 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 1779 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 1780 | const char *admin_state, *oper_state; |
fe8db0c5 TG |
1781 | int r; |
1782 | ||
1783 | assert(link); | |
1784 | assert(link->state_file); | |
68a8723c | 1785 | assert(link->lease_file); |
bbf7c048 TG |
1786 | assert(link->manager); |
1787 | ||
e375dcde TG |
1788 | link_update_operstate(link); |
1789 | ||
bbf7c048 TG |
1790 | r = manager_save(link->manager); |
1791 | if (r < 0) | |
1792 | return r; | |
fe8db0c5 | 1793 | |
370e9930 TG |
1794 | if (link->state == LINK_STATE_LINGER) { |
1795 | unlink(link->state_file); | |
1796 | return 0; | |
1797 | } | |
1798 | ||
deb2e523 TG |
1799 | admin_state = link_state_to_string(link->state); |
1800 | assert(admin_state); | |
1801 | ||
e375dcde TG |
1802 | oper_state = link_operstate_to_string(link->operstate); |
1803 | assert(oper_state); | |
deb2e523 | 1804 | |
fe8db0c5 TG |
1805 | r = fopen_temporary(link->state_file, &f, &temp_path); |
1806 | if (r < 0) | |
c2d6bd61 | 1807 | return r; |
fe8db0c5 TG |
1808 | |
1809 | fchmod(fileno(f), 0644); | |
1810 | ||
1811 | fprintf(f, | |
1812 | "# This is private data. Do not parse.\n" | |
deb2e523 | 1813 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
1814 | "OPER_STATE=%s\n", |
1815 | admin_state, oper_state); | |
fe8db0c5 | 1816 | |
bcb7a07e | 1817 | if (link->network) { |
ea352b40 LP |
1818 | char **address, **domain; |
1819 | bool space; | |
b0e39c82 | 1820 | |
adc5b2e2 TG |
1821 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
1822 | ||
b0e39c82 | 1823 | fputs("DNS=", f); |
ea352b40 LP |
1824 | space = false; |
1825 | STRV_FOREACH(address, link->network->dns) { | |
1826 | if (space) | |
1827 | fputc(' ', f); | |
1828 | fputs(*address, f); | |
1829 | space = true; | |
1830 | } | |
d5314fff | 1831 | |
b0e39c82 TG |
1832 | if (link->network->dhcp_dns && |
1833 | link->dhcp_lease) { | |
1834 | const struct in_addr *addresses; | |
1835 | ||
1836 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
1837 | if (r > 0) { | |
ea352b40 LP |
1838 | if (space) |
1839 | fputc(' ', f); | |
b0e39c82 | 1840 | serialize_in_addrs(f, addresses, r); |
b0e39c82 TG |
1841 | } |
1842 | } | |
1843 | ||
b0e39c82 TG |
1844 | fputs("\n", f); |
1845 | ||
1846 | fprintf(f, "NTP="); | |
ea352b40 LP |
1847 | space = false; |
1848 | STRV_FOREACH(address, link->network->ntp) { | |
1849 | if (space) | |
1850 | fputc(' ', f); | |
1851 | fputs(*address, f); | |
1852 | space = true; | |
1853 | } | |
d5314fff | 1854 | |
b0e39c82 TG |
1855 | if (link->network->dhcp_ntp && |
1856 | link->dhcp_lease) { | |
1857 | const struct in_addr *addresses; | |
1858 | ||
1859 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
1860 | if (r > 0) { | |
ea352b40 LP |
1861 | if (space) |
1862 | fputc(' ', f); | |
b0e39c82 | 1863 | serialize_in_addrs(f, addresses, r); |
b0e39c82 TG |
1864 | } |
1865 | } | |
1866 | ||
b0e39c82 | 1867 | fputs("\n", f); |
bd8f6538 | 1868 | |
6192b846 | 1869 | fprintf(f, "DOMAINS="); |
ea352b40 LP |
1870 | space = false; |
1871 | STRV_FOREACH(domain, link->network->domains) { | |
1872 | if (space) | |
1873 | fputc(' ', f); | |
1874 | fputs(*domain, f); | |
1875 | space = true; | |
1876 | } | |
d5314fff | 1877 | |
ad0734e8 | 1878 | if (link->network->dhcp_domains && |
9b4d1882 TG |
1879 | link->dhcp_lease) { |
1880 | const char *domainname; | |
1881 | ||
1882 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
6192b846 | 1883 | if (r >= 0) { |
ea352b40 LP |
1884 | if (space) |
1885 | fputc(' ', f); | |
6192b846 | 1886 | fputs(domainname, f); |
6192b846 | 1887 | } |
9b4d1882 TG |
1888 | } |
1889 | ||
6192b846 TG |
1890 | fputs("\n", f); |
1891 | ||
67272d15 TG |
1892 | fprintf(f, "WILDCARD_DOMAIN=%s\n", |
1893 | yes_no(link->network->wildcard_domain)); | |
1894 | ||
3c9b8860 TG |
1895 | fprintf(f, "LLMNR=%s\n", |
1896 | llmnr_support_to_string(link->network->llmnr)); | |
bcb7a07e | 1897 | } |
7374f9d8 | 1898 | |
fe8db0c5 | 1899 | if (link->dhcp_lease) { |
d9876a52 TG |
1900 | assert(link->network); |
1901 | ||
1dc24d5f | 1902 | r = sd_dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 1903 | if (r < 0) |
c2d6bd61 | 1904 | goto fail; |
fe8db0c5 | 1905 | |
7374f9d8 | 1906 | fprintf(f, |
b0e39c82 TG |
1907 | "DHCP_LEASE=%s\n", |
1908 | link->lease_file); | |
deb2e523 | 1909 | } else |
68a8723c | 1910 | unlink(link->lease_file); |
fe8db0c5 | 1911 | |
49699bac SS |
1912 | if (link->lldp) { |
1913 | assert(link->network); | |
1914 | ||
1915 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
1916 | if (r < 0) | |
1917 | goto fail; | |
1918 | ||
1919 | fprintf(f, | |
1920 | "LLDP_FILE=%s\n", | |
1921 | link->lldp_file); | |
1922 | } else | |
1923 | unlink(link->lldp_file); | |
1924 | ||
c2d6bd61 LP |
1925 | r = fflush_and_check(f); |
1926 | if (r < 0) | |
1927 | goto fail; | |
fe8db0c5 | 1928 | |
c2d6bd61 | 1929 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 1930 | r = -errno; |
c2d6bd61 | 1931 | goto fail; |
fe8db0c5 TG |
1932 | } |
1933 | ||
c2d6bd61 | 1934 | return 0; |
c2d6bd61 | 1935 | fail: |
79008bdd | 1936 | log_link_error(link, "Failed to save link data to %s: %s", link->state_file, strerror(-r)); |
c2d6bd61 LP |
1937 | unlink(link->state_file); |
1938 | unlink(temp_path); | |
fe8db0c5 TG |
1939 | return r; |
1940 | } | |
1941 | ||
1942 | static const char* const link_state_table[_LINK_STATE_MAX] = { | |
8434fd5c | 1943 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
1944 | [LINK_STATE_ENSLAVING] = "configuring", |
1945 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
1946 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
1947 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 1948 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 1949 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 1950 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
1951 | }; |
1952 | ||
1953 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
1954 | |
1955 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
1956 | [LINK_OPERSTATE_OFF] = "off", |
1957 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
1958 | [LINK_OPERSTATE_DORMANT] = "dormant", |
1959 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
1960 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
1961 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
1962 | }; | |
1963 | ||
1964 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |