]>
Commit | Line | Data |
---|---|---|
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 | |
b5efdb8a | 26 | #include "alloc-util.h" |
1346b1f0 | 27 | #include "bus-util.h" |
bd91b83e | 28 | #include "dhcp-lease-internal.h" |
3ffd4af2 | 29 | #include "fd-util.h" |
cf1d700d TG |
30 | #include "fileio.h" |
31 | #include "netlink-util.h" | |
c6f7c917 | 32 | #include "network-internal.h" |
3ffd4af2 LP |
33 | #include "networkd-link.h" |
34 | #include "networkd-netdev.h" | |
cf1d700d TG |
35 | #include "set.h" |
36 | #include "socket-util.h" | |
15a5e950 | 37 | #include "stdio-util.h" |
8b43440b | 38 | #include "string-table.h" |
cf1d700d TG |
39 | #include "udev-util.h" |
40 | #include "util.h" | |
41 | #include "virt.h" | |
fc2f9534 | 42 | |
a97dcc12 | 43 | bool link_dhcp6_enabled(Link *link) { |
78c958f8 TG |
44 | if (link->flags & IFF_LOOPBACK) |
45 | return false; | |
46 | ||
47 | if (!link->network) | |
48 | return false; | |
49 | ||
e0ee46f2 | 50 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
51 | } |
52 | ||
a97dcc12 | 53 | bool link_dhcp4_enabled(Link *link) { |
78c958f8 TG |
54 | if (link->flags & IFF_LOOPBACK) |
55 | return false; | |
56 | ||
57 | if (!link->network) | |
58 | return false; | |
59 | ||
e0ee46f2 | 60 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
61 | } |
62 | ||
a97dcc12 | 63 | bool link_dhcp4_server_enabled(Link *link) { |
78c958f8 TG |
64 | if (link->flags & IFF_LOOPBACK) |
65 | return false; | |
66 | ||
67 | if (!link->network) | |
68 | return false; | |
69 | ||
70 | return link->network->dhcp_server; | |
71 | } | |
72 | ||
a97dcc12 | 73 | bool link_ipv4ll_enabled(Link *link) { |
78c958f8 TG |
74 | if (link->flags & IFF_LOOPBACK) |
75 | return false; | |
76 | ||
77 | if (!link->network) | |
78 | return false; | |
79 | ||
e0ee46f2 | 80 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
81 | } |
82 | ||
83 | bool link_ipv6ll_enabled(Link *link) { | |
84 | if (link->flags & IFF_LOOPBACK) | |
85 | return false; | |
86 | ||
87 | if (!link->network) | |
88 | return false; | |
89 | ||
e0ee46f2 | 90 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
91 | } |
92 | ||
a97dcc12 | 93 | bool link_lldp_enabled(Link *link) { |
ce43e484 SS |
94 | if (link->flags & IFF_LOOPBACK) |
95 | return false; | |
96 | ||
97 | if (!link->network) | |
98 | return false; | |
99 | ||
5a8bcb67 | 100 | if (link->network->bridge) |
ce43e484 SS |
101 | return false; |
102 | ||
103 | return link->network->lldp; | |
104 | } | |
105 | ||
769d324c | 106 | static bool link_ipv4_forward_enabled(Link *link) { |
5a8bcb67 LP |
107 | if (link->flags & IFF_LOOPBACK) |
108 | return false; | |
109 | ||
110 | if (!link->network) | |
111 | return false; | |
112 | ||
765afd5c LP |
113 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
114 | return false; | |
115 | ||
e0ee46f2 | 116 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
117 | } |
118 | ||
119 | static bool link_ipv6_forward_enabled(Link *link) { | |
765afd5c LP |
120 | |
121 | if (!socket_ipv6_is_supported()) | |
122 | return false; | |
123 | ||
769d324c LP |
124 | if (link->flags & IFF_LOOPBACK) |
125 | return false; | |
126 | ||
127 | if (!link->network) | |
128 | return false; | |
129 | ||
765afd5c LP |
130 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
131 | return false; | |
132 | ||
e0ee46f2 | 133 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
134 | } |
135 | ||
f5a8c43f TG |
136 | bool link_ipv6_accept_ra_enabled(Link *link) { |
137 | if (link->flags & IFF_LOOPBACK) | |
138 | return false; | |
139 | ||
140 | if (!link->network) | |
141 | return false; | |
142 | ||
143 | /* If unset use system default (enabled if local forwarding is disabled. | |
144 | * disabled if local forwarding is enabled). | |
145 | * If set, ignore or enforce RA independent of local forwarding state. | |
146 | */ | |
147 | if (link->network->ipv6_accept_ra < 0) | |
148 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ | |
149 | return !link_ipv6_forward_enabled(link); | |
150 | else if (link->network->ipv6_accept_ra > 0) | |
151 | /* accept RA even if ip_forward is enabled */ | |
152 | return true; | |
153 | else | |
154 | /* ignore RA */ | |
155 | return false; | |
156 | } | |
157 | ||
1f0d9695 | 158 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
d68e2e59 LP |
159 | |
160 | if (!socket_ipv6_is_supported()) | |
161 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; | |
162 | ||
49092e22 | 163 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 164 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
165 | |
166 | if (!link->network) | |
1f0d9695 | 167 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
168 | |
169 | return link->network->ipv6_privacy_extensions; | |
170 | } | |
171 | ||
84de38c5 TG |
172 | void link_update_operstate(Link *link) { |
173 | LinkOperationalState operstate; | |
174 | assert(link); | |
175 | ||
176 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
177 | operstate = LINK_OPERSTATE_DORMANT; | |
178 | else if (link_has_carrier(link)) { | |
179 | Address *address; | |
180 | uint8_t scope = RT_SCOPE_NOWHERE; | |
181 | Iterator i; | |
182 | ||
183 | /* if we have carrier, check what addresses we have */ | |
184 | SET_FOREACH(address, link->addresses, i) { | |
185 | if (!address_is_ready(address)) | |
186 | continue; | |
187 | ||
188 | if (address->scope < scope) | |
189 | scope = address->scope; | |
190 | } | |
191 | ||
192 | /* for operstate we also take foreign addresses into account */ | |
193 | SET_FOREACH(address, link->addresses_foreign, i) { | |
194 | if (!address_is_ready(address)) | |
195 | continue; | |
196 | ||
197 | if (address->scope < scope) | |
198 | scope = address->scope; | |
199 | } | |
200 | ||
201 | if (scope < RT_SCOPE_SITE) | |
202 | /* universally accessible addresses found */ | |
203 | operstate = LINK_OPERSTATE_ROUTABLE; | |
204 | else if (scope < RT_SCOPE_HOST) | |
205 | /* only link or site local addresses found */ | |
206 | operstate = LINK_OPERSTATE_DEGRADED; | |
207 | else | |
208 | /* no useful addresses found */ | |
209 | operstate = LINK_OPERSTATE_CARRIER; | |
210 | } else if (link->flags & IFF_UP) | |
211 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
212 | else | |
213 | operstate = LINK_OPERSTATE_OFF; | |
214 | ||
215 | if (link->operstate != operstate) { | |
216 | link->operstate = operstate; | |
217 | link_send_changed(link, "OperationalState", NULL); | |
218 | link_dirty(link); | |
219 | manager_dirty(link->manager); | |
220 | } | |
221 | } | |
222 | ||
51d18171 TG |
223 | #define FLAG_STRING(string, flag, old, new) \ |
224 | (((old ^ new) & flag) \ | |
225 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
226 | : "") | |
227 | ||
1c4baffc | 228 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
229 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
230 | uint8_t operstate; | |
231 | int r; | |
232 | ||
233 | assert(link); | |
234 | ||
235 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
236 | if (r < 0) |
237 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 238 | |
1c4baffc | 239 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
240 | if (r < 0) |
241 | /* if we got a message without operstate, take it to mean | |
242 | the state was unchanged */ | |
243 | operstate = link->kernel_operstate; | |
244 | ||
245 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
246 | return 0; | |
247 | ||
248 | if (link->flags != flags) { | |
6a7a4e4d | 249 | 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 |
250 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
251 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
252 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
253 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
254 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
255 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
256 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
257 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
258 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
259 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
260 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
261 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
262 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
263 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
264 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
265 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
266 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
267 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
268 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
269 | ||
270 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
271 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
272 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
273 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
274 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
275 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
276 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
277 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
278 | ||
279 | /* link flags are currently at most 18 bits, let's align to | |
280 | * printing 20 */ | |
281 | if (unknown_flags_added) | |
79008bdd | 282 | log_link_debug(link, |
6a7a4e4d | 283 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
284 | unknown_flags_added); |
285 | ||
286 | if (unknown_flags_removed) | |
79008bdd | 287 | log_link_debug(link, |
6a7a4e4d | 288 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
289 | unknown_flags_removed); |
290 | } | |
291 | ||
292 | link->flags = flags; | |
293 | link->kernel_operstate = operstate; | |
294 | ||
84de38c5 | 295 | link_update_operstate(link); |
51d18171 TG |
296 | |
297 | return 0; | |
298 | } | |
299 | ||
1c4baffc | 300 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 301 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 302 | uint16_t type; |
ca4e095a | 303 | const char *ifname; |
505f8da7 | 304 | int r, ifindex; |
f579559b | 305 | |
0c2f9b84 | 306 | assert(manager); |
505f8da7 | 307 | assert(message); |
f579559b TG |
308 | assert(ret); |
309 | ||
1c4baffc | 310 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
311 | if (r < 0) |
312 | return r; | |
313 | else if (type != RTM_NEWLINK) | |
314 | return -EINVAL; | |
315 | ||
316 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
317 | if (r < 0) | |
318 | return r; | |
319 | else if (ifindex <= 0) | |
320 | return -EINVAL; | |
321 | ||
1c4baffc | 322 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
323 | if (r < 0) |
324 | return r; | |
325 | ||
f579559b TG |
326 | link = new0(Link, 1); |
327 | if (!link) | |
328 | return -ENOMEM; | |
329 | ||
14b746f7 | 330 | link->n_ref = 1; |
5a3eb5a7 | 331 | link->manager = manager; |
8434fd5c | 332 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 333 | link->rtnl_extended_attrs = true; |
505f8da7 TG |
334 | link->ifindex = ifindex; |
335 | link->ifname = strdup(ifname); | |
336 | if (!link->ifname) | |
337 | return -ENOMEM; | |
f579559b | 338 | |
1c4baffc | 339 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 340 | if (r < 0) |
79008bdd | 341 | log_link_debug(link, "MAC address not found for new device, continuing without"); |
512922f8 | 342 | |
3c9b8860 TG |
343 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", |
344 | link->ifindex); | |
fe8db0c5 | 345 | if (r < 0) |
315db1a8 | 346 | return -ENOMEM; |
fe8db0c5 | 347 | |
3c9b8860 TG |
348 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", |
349 | link->ifindex); | |
68a8723c TG |
350 | if (r < 0) |
351 | return -ENOMEM; | |
352 | ||
49699bac SS |
353 | r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", |
354 | link->ifindex); | |
355 | if (r < 0) | |
356 | return -ENOMEM; | |
357 | ||
358 | ||
d5099efc | 359 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
360 | if (r < 0) |
361 | return r; | |
362 | ||
363 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
364 | if (r < 0) |
365 | return r; | |
366 | ||
51d18171 TG |
367 | r = link_update_flags(link, message); |
368 | if (r < 0) | |
369 | return r; | |
370 | ||
f579559b TG |
371 | *ret = link; |
372 | link = NULL; | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
14b746f7 | 377 | static void link_free(Link *link) { |
428fd0a7 | 378 | Address *address; |
0d4ad91d AR |
379 | Iterator i; |
380 | Link *carrier; | |
428fd0a7 | 381 | |
f579559b TG |
382 | if (!link) |
383 | return; | |
384 | ||
cf1d700d TG |
385 | while (!set_isempty(link->addresses)) |
386 | address_free(set_first(link->addresses)); | |
387 | ||
adda1ed9 TG |
388 | while (!set_isempty(link->addresses_foreign)) |
389 | address_free(set_first(link->addresses_foreign)); | |
390 | ||
4701725c HV |
391 | link->addresses = set_free(link->addresses); |
392 | ||
393 | link->addresses_foreign = set_free(link->addresses_foreign); | |
adda1ed9 | 394 | |
11bf3cce LP |
395 | while ((address = link->pool_addresses)) { |
396 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
397 | address_free(address); | |
398 | } | |
399 | ||
bfcdba8d | 400 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 401 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 402 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 403 | |
68a8723c TG |
404 | free(link->lease_file); |
405 | ||
4afd3348 | 406 | sd_lldp_unref(link->lldp); |
07e10d1a | 407 | |
49699bac SS |
408 | free(link->lldp_file); |
409 | ||
56cd007a | 410 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 411 | sd_dhcp6_client_unref(link->dhcp6_client); |
de1e9928 | 412 | sd_ndisc_unref(link->ndisc_router_discovery); |
4138fb2c | 413 | |
28aeb07f | 414 | if (link->manager) |
ae06ab10 | 415 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 416 | |
c166a070 | 417 | free(link->ifname); |
68a8723c | 418 | |
84de38c5 | 419 | (void)unlink(link->state_file); |
fe8db0c5 | 420 | free(link->state_file); |
c166a070 | 421 | |
b5db00e5 UTL |
422 | udev_device_unref(link->udev_device); |
423 | ||
0d4ad91d AR |
424 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
425 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
426 | hashmap_free(link->bound_to_links); | |
427 | ||
428 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
429 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
430 | hashmap_free(link->bound_by_links); | |
431 | ||
f579559b TG |
432 | free(link); |
433 | } | |
434 | ||
14b746f7 | 435 | Link *link_unref(Link *link) { |
957325b7 TG |
436 | if (!link) |
437 | return NULL; | |
438 | ||
439 | assert(link->n_ref > 0); | |
440 | ||
441 | link->n_ref --; | |
442 | ||
443 | if (link->n_ref > 0) | |
444 | return NULL; | |
445 | ||
446 | link_free(link); | |
14b746f7 TG |
447 | |
448 | return NULL; | |
449 | } | |
450 | ||
451 | Link *link_ref(Link *link) { | |
957325b7 TG |
452 | if (!link) |
453 | return NULL; | |
454 | ||
455 | assert(link->n_ref > 0); | |
456 | ||
457 | link->n_ref ++; | |
14b746f7 TG |
458 | |
459 | return link; | |
460 | } | |
461 | ||
11a7f229 TG |
462 | int link_get(Manager *m, int ifindex, Link **ret) { |
463 | Link *link; | |
11a7f229 TG |
464 | |
465 | assert(m); | |
11a7f229 TG |
466 | assert(ifindex); |
467 | assert(ret); | |
468 | ||
ae06ab10 | 469 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
470 | if (!link) |
471 | return -ENODEV; | |
472 | ||
473 | *ret = link; | |
474 | ||
475 | return 0; | |
476 | } | |
477 | ||
e331e246 TG |
478 | static void link_set_state(Link *link, LinkState state) { |
479 | assert(link); | |
480 | ||
481 | if (link->state == state) | |
482 | return; | |
483 | ||
484 | link->state = state; | |
485 | ||
486 | link_send_changed(link, "AdministrativeState", NULL); | |
487 | ||
488 | return; | |
489 | } | |
490 | ||
57bd6899 TG |
491 | static void link_enter_unmanaged(Link *link) { |
492 | assert(link); | |
493 | ||
6a7a4e4d | 494 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 495 | |
e331e246 | 496 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 497 | |
84de38c5 | 498 | link_dirty(link); |
57bd6899 TG |
499 | } |
500 | ||
111bb8f9 TG |
501 | static int link_stop_clients(Link *link) { |
502 | int r = 0, k; | |
503 | ||
504 | assert(link); | |
505 | assert(link->manager); | |
506 | assert(link->manager->event); | |
507 | ||
ba179154 | 508 | if (link->dhcp_client) { |
111bb8f9 | 509 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d LP |
510 | if (k < 0) |
511 | r = log_link_warning_errno(link, r, "Could not stop DHCPv4 client: %m"); | |
111bb8f9 TG |
512 | } |
513 | ||
ba179154 | 514 | if (link->ipv4ll) { |
111bb8f9 | 515 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d LP |
516 | if (k < 0) |
517 | r = log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m"); | |
dd43110f TG |
518 | } |
519 | ||
f5a8c43f TG |
520 | if (link->dhcp6_client) { |
521 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
522 | if (k < 0) | |
523 | r = log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); | |
524 | } | |
4138fb2c | 525 | |
f5a8c43f | 526 | if (link->ndisc_router_discovery) { |
de1e9928 | 527 | k = sd_ndisc_stop(link->ndisc_router_discovery); |
6a7a4e4d | 528 | if (k < 0) |
ceabaf0f | 529 | r = log_link_warning_errno(link, r, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
530 | } |
531 | ||
ce43e484 | 532 | if (link->lldp) { |
ce43e484 | 533 | k = sd_lldp_stop(link->lldp); |
6a7a4e4d LP |
534 | if (k < 0) |
535 | r = log_link_warning_errno(link, r, "Could not stop LLDP: %m"); | |
ce43e484 SS |
536 | } |
537 | ||
111bb8f9 TG |
538 | return r; |
539 | } | |
540 | ||
b22d8a00 | 541 | void link_enter_failed(Link *link) { |
ef1ba606 | 542 | assert(link); |
f882c247 | 543 | |
370e9930 | 544 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
545 | return; |
546 | ||
6a7a4e4d | 547 | log_link_warning(link, "Failed"); |
449f7554 | 548 | |
e331e246 | 549 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 550 | |
111bb8f9 TG |
551 | link_stop_clients(link); |
552 | ||
84de38c5 | 553 | link_dirty(link); |
f882c247 TG |
554 | } |
555 | ||
4f434938 LP |
556 | static Address* link_find_dhcp_server_address(Link *link) { |
557 | Address *address; | |
558 | ||
559 | assert(link); | |
560 | assert(link->network); | |
561 | ||
d4cdbea5 | 562 | /* The first statically configured address if there is any */ |
4f434938 LP |
563 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
564 | ||
565 | if (address->family != AF_INET) | |
566 | continue; | |
567 | ||
af93291c | 568 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
569 | continue; |
570 | ||
571 | return address; | |
572 | } | |
573 | ||
574 | /* If that didn't work, find a suitable address we got from the pool */ | |
575 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
576 | if (address->family != AF_INET) | |
577 | continue; | |
578 | ||
579 | return address; | |
580 | } | |
581 | ||
582 | return NULL; | |
583 | } | |
584 | ||
dd43110f | 585 | static int link_enter_configured(Link *link) { |
dd43110f TG |
586 | assert(link); |
587 | assert(link->network); | |
588 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
589 | ||
6a7a4e4d | 590 | log_link_info(link, "Configured"); |
dd43110f | 591 | |
e331e246 | 592 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 593 | |
84de38c5 | 594 | link_dirty(link); |
dd43110f TG |
595 | |
596 | return 0; | |
597 | } | |
598 | ||
8012cd39 TG |
599 | void link_check_ready(Link *link) { |
600 | Address *a; | |
601 | Iterator i; | |
602 | ||
3c9b8860 | 603 | assert(link); |
adda1ed9 TG |
604 | |
605 | if (!link->network) | |
606 | return; | |
3c9b8860 TG |
607 | |
608 | if (!link->static_configured) | |
609 | return; | |
610 | ||
78c958f8 | 611 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
612 | if (!link->ipv4ll_address || |
613 | !link->ipv4ll_route) | |
614 | return; | |
615 | ||
e7ab854c | 616 | if (link_ipv6ll_enabled(link)) |
c601ebf7 | 617 | if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) > 0) |
e7ab854c TG |
618 | return; |
619 | ||
3ada37a2 PF |
620 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
621 | !link->dhcp4_configured) || | |
622 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
623 | !link->dhcp6_configured) || | |
624 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
625 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
18d29550 PF |
626 | return; |
627 | ||
fe307276 TG |
628 | if (link_ipv6_accept_ra_enabled(link) && !link->ndisc_configured) |
629 | return; | |
630 | ||
8012cd39 TG |
631 | SET_FOREACH(a, link->addresses, i) |
632 | if (!address_is_ready(a)) | |
633 | return; | |
634 | ||
9fdaa992 TG |
635 | if (link->state != LINK_STATE_CONFIGURED) |
636 | link_enter_configured(link); | |
3c9b8860 TG |
637 | |
638 | return; | |
639 | } | |
640 | ||
1c4baffc | 641 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 642 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
643 | int r; |
644 | ||
3c9b8860 | 645 | assert(link->link_messages > 0); |
370e9930 TG |
646 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
647 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
648 | LINK_STATE_LINGER)); | |
f882c247 | 649 | |
3c9b8860 | 650 | link->link_messages --; |
f882c247 | 651 | |
77a008c0 | 652 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
653 | return 1; |
654 | ||
1c4baffc | 655 | r = sd_netlink_message_get_errno(m); |
c166a070 | 656 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 657 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 658 | |
3c9b8860 | 659 | if (link->link_messages == 0) { |
6a7a4e4d | 660 | log_link_debug(link, "Routes set"); |
3c9b8860 | 661 | link->static_configured = true; |
8012cd39 | 662 | link_check_ready(link); |
dd3efc09 | 663 | } |
f882c247 TG |
664 | |
665 | return 1; | |
666 | } | |
667 | ||
668 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 669 | Route *rt; |
f882c247 TG |
670 | int r; |
671 | ||
672 | assert(link); | |
673 | assert(link->network); | |
ef1ba606 | 674 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 675 | |
e331e246 | 676 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 677 | |
3d3d4255 | 678 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 679 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 680 | if (r < 0) { |
6a7a4e4d | 681 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 682 | link_enter_failed(link); |
a6cc569e TG |
683 | return r; |
684 | } | |
685 | ||
3c9b8860 | 686 | link->link_messages ++; |
8ddbeaa2 | 687 | } |
f5be5601 | 688 | |
3c9b8860 TG |
689 | if (link->link_messages == 0) { |
690 | link->static_configured = true; | |
8012cd39 | 691 | link_check_ready(link); |
431ca2ce | 692 | } else |
6a7a4e4d | 693 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
694 | |
695 | return 0; | |
696 | } | |
697 | ||
91b5f997 | 698 | int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 699 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
700 | int r; |
701 | ||
702 | assert(m); | |
703 | assert(link); | |
704 | assert(link->ifname); | |
705 | ||
5da8149f | 706 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
707 | return 1; |
708 | ||
1c4baffc | 709 | r = sd_netlink_message_get_errno(m); |
b90b025a | 710 | if (r < 0 && r != -ESRCH) |
a2fae7bb | 711 | log_link_warning_errno(link, r, "Could not drop route: %m"); |
5c1d3fc9 | 712 | |
5bdd314c | 713 | return 1; |
5c1d3fc9 UTL |
714 | } |
715 | ||
1c4baffc | 716 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 717 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
718 | int r; |
719 | ||
4958aee4 | 720 | assert(rtnl); |
f5be5601 TG |
721 | assert(m); |
722 | assert(link); | |
723 | assert(link->ifname); | |
3c9b8860 | 724 | assert(link->link_messages > 0); |
370e9930 TG |
725 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
726 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 727 | |
3c9b8860 | 728 | link->link_messages --; |
f882c247 | 729 | |
5da8149f | 730 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
731 | return 1; |
732 | ||
1c4baffc | 733 | r = sd_netlink_message_get_errno(m); |
c166a070 | 734 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 735 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 736 | else if (r >= 0) |
200a0868 | 737 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 738 | |
3c9b8860 | 739 | if (link->link_messages == 0) { |
6a7a4e4d | 740 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 741 | link_enter_set_routes(link); |
dd3efc09 | 742 | } |
f882c247 TG |
743 | |
744 | return 1; | |
745 | } | |
746 | ||
4f5f911e LP |
747 | static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
748 | _cleanup_free_ struct in_addr *addresses = NULL; | |
749 | size_t n_addresses = 0, n_allocated = 0; | |
750 | char **a; | |
751 | ||
752 | log_debug("Copying DNS server information from %s", link->ifname); | |
753 | ||
754 | if (!link->network) | |
755 | return 0; | |
756 | ||
757 | STRV_FOREACH(a, link->network->dns) { | |
758 | struct in_addr ia; | |
759 | ||
760 | /* Only look for IPv4 addresses */ | |
761 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
762 | continue; | |
763 | ||
764 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
765 | return log_oom(); | |
766 | ||
767 | addresses[n_addresses++] = ia; | |
768 | } | |
769 | ||
770 | if (link->network->dhcp_dns && | |
771 | link->dhcp_lease) { | |
772 | const struct in_addr *da = NULL; | |
773 | int n; | |
774 | ||
775 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
776 | if (n > 0) { | |
777 | ||
778 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
779 | return log_oom(); | |
780 | ||
781 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
782 | n_addresses += n; | |
783 | } | |
784 | } | |
785 | ||
786 | if (n_addresses <= 0) | |
787 | return 0; | |
788 | ||
789 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
790 | } | |
791 | ||
792 | static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { | |
793 | _cleanup_free_ struct in_addr *addresses = NULL; | |
794 | size_t n_addresses = 0, n_allocated = 0; | |
795 | char **a; | |
796 | ||
797 | if (!link->network) | |
798 | return 0; | |
799 | ||
800 | log_debug("Copying NTP server information from %s", link->ifname); | |
801 | ||
802 | STRV_FOREACH(a, link->network->ntp) { | |
803 | struct in_addr ia; | |
804 | ||
805 | /* Only look for IPv4 addresses */ | |
806 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
807 | continue; | |
808 | ||
809 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
810 | return log_oom(); | |
811 | ||
812 | addresses[n_addresses++] = ia; | |
813 | } | |
814 | ||
815 | if (link->network->dhcp_ntp && | |
816 | link->dhcp_lease) { | |
817 | const struct in_addr *da = NULL; | |
818 | int n; | |
819 | ||
820 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
821 | if (n > 0) { | |
822 | ||
823 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
824 | return log_oom(); | |
825 | ||
826 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
827 | n_addresses += n; | |
828 | } | |
829 | } | |
830 | ||
831 | if (n_addresses <= 0) | |
832 | return 0; | |
833 | ||
834 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
835 | } | |
836 | ||
f882c247 | 837 | static int link_enter_set_addresses(Link *link) { |
a6cc569e | 838 | Address *ad; |
f882c247 TG |
839 | int r; |
840 | ||
841 | assert(link); | |
842 | assert(link->network); | |
f5be5601 | 843 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 844 | |
e331e246 | 845 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 846 | |
3d3d4255 | 847 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
66669078 | 848 | r = address_configure(ad, link, &address_handler, false); |
dd3efc09 | 849 | if (r < 0) { |
5a8bcb67 | 850 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
851 | link_enter_failed(link); |
852 | return r; | |
853 | } | |
854 | ||
3c9b8860 | 855 | link->link_messages ++; |
f882c247 TG |
856 | } |
857 | ||
d4cdbea5 TG |
858 | /* now that we can figure out a default address for the dhcp server, |
859 | start it */ | |
860 | if (link_dhcp4_server_enabled(link)) { | |
d4cdbea5 | 861 | Address *address; |
4f5f911e LP |
862 | Link *uplink = NULL; |
863 | bool acquired_uplink = false; | |
d4cdbea5 TG |
864 | |
865 | address = link_find_dhcp_server_address(link); | |
866 | if (!address) { | |
6a7a4e4d | 867 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
868 | link_enter_failed(link); |
869 | return 0; | |
870 | } | |
871 | ||
61986155 | 872 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
873 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
874 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
875 | if (r < 0) |
876 | return r; | |
877 | ||
878 | /* TODO: | |
879 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
880 | &main_address->in_addr.in); | |
881 | if (r < 0) | |
882 | return r; | |
d4cdbea5 TG |
883 | */ |
884 | ||
586ac6f7 LP |
885 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
886 | r = sd_dhcp_server_set_max_lease_time( | |
887 | link->dhcp_server, | |
888 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
889 | if (r < 0) | |
890 | return r; | |
891 | } | |
892 | ||
893 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
894 | r = sd_dhcp_server_set_default_lease_time( | |
895 | link->dhcp_server, | |
896 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
897 | if (r < 0) | |
898 | return r; | |
899 | } | |
900 | ||
1a04db0f LP |
901 | if (link->network->dhcp_server_emit_dns) { |
902 | ||
4f5f911e | 903 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 904 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
905 | else { |
906 | uplink = manager_find_uplink(link->manager, link); | |
907 | acquired_uplink = true; | |
908 | ||
909 | if (!uplink) { | |
910 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
911 | r = 0; | |
912 | } else | |
913 | r = link_push_dns_to_dhcp_server(uplink, link->dhcp_server); | |
914 | } | |
915 | if (r < 0) | |
916 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
917 | } |
918 | ||
919 | ||
920 | if (link->network->dhcp_server_emit_ntp) { | |
921 | ||
4f5f911e | 922 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 923 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
924 | else { |
925 | if (!acquired_uplink) | |
926 | uplink = manager_find_uplink(link->manager, link); | |
927 | ||
928 | if (!uplink) { | |
929 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
930 | r = 0; | |
931 | } else | |
932 | r = link_push_ntp_to_dhcp_server(uplink, link->dhcp_server); | |
933 | ||
934 | } | |
935 | if (r < 0) | |
936 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
937 | } |
938 | ||
8eb9058d LP |
939 | if (link->network->dhcp_server_emit_timezone) { |
940 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 941 | const char *tz = NULL; |
8eb9058d LP |
942 | |
943 | if (link->network->dhcp_server_timezone) | |
944 | tz = link->network->dhcp_server_timezone; | |
945 | else { | |
946 | r = get_timezone(&buffer); | |
947 | if (r < 0) | |
948 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
949 | else | |
950 | tz = buffer; | |
951 | } | |
952 | ||
953 | if (tz) { | |
954 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
955 | if (r < 0) | |
956 | return r; | |
957 | } | |
958 | } | |
959 | ||
d4cdbea5 TG |
960 | r = sd_dhcp_server_start(link->dhcp_server); |
961 | if (r < 0) { | |
6a7a4e4d | 962 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
963 | |
964 | link_enter_failed(link); | |
965 | ||
966 | return 0; | |
967 | } | |
968 | ||
6a7a4e4d | 969 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
970 | } |
971 | ||
6a7a4e4d | 972 | if (link->link_messages == 0) |
431ca2ce | 973 | link_enter_set_routes(link); |
6a7a4e4d LP |
974 | else |
975 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 976 | |
f882c247 TG |
977 | return 0; |
978 | } | |
979 | ||
91b5f997 | 980 | int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 981 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
982 | int r; |
983 | ||
984 | assert(m); | |
985 | assert(link); | |
986 | assert(link->ifname); | |
987 | ||
5da8149f | 988 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
989 | return 1; |
990 | ||
1c4baffc | 991 | r = sd_netlink_message_get_errno(m); |
b90b025a | 992 | if (r < 0 && r != -EADDRNOTAVAIL) |
a2fae7bb | 993 | log_link_warning_errno(link, r, "Could not drop address: %m"); |
ff254138 | 994 | |
5bdd314c | 995 | return 1; |
ff254138 TG |
996 | } |
997 | ||
a245ced0 | 998 | static int link_set_bridge_fdb(Link *const link) { |
b98b483b AR |
999 | FdbEntry *fdb_entry; |
1000 | int r = 0; | |
1001 | ||
1002 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
ea6ec096 | 1003 | r = fdb_entry_configure(link, fdb_entry); |
b98b483b | 1004 | if(r < 0) { |
6a7a4e4d | 1005 | log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
b98b483b AR |
1006 | break; |
1007 | } | |
1008 | } | |
1009 | ||
1010 | return r; | |
1011 | } | |
1012 | ||
1c4baffc | 1013 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
1014 | _cleanup_link_unref_ Link *link = userdata; |
1015 | int r; | |
1016 | ||
6a7a4e4d | 1017 | log_link_debug(link, "Set link"); |
e1853b00 | 1018 | |
1c4baffc | 1019 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 1020 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 1021 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
1022 | link_enter_failed(link); |
1023 | return 1; | |
1024 | } | |
1025 | ||
1026 | return 0; | |
1027 | } | |
1028 | ||
19070062 | 1029 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
5da8149f | 1030 | _cleanup_link_unref_ Link *link = userdata; |
21b80ad1 | 1031 | const sd_bus_error *e; |
1346b1f0 | 1032 | |
19070062 | 1033 | assert(m); |
b226d99b TG |
1034 | assert(link); |
1035 | ||
5da8149f | 1036 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 1037 | return 1; |
370e9930 | 1038 | |
21b80ad1 LP |
1039 | e = sd_bus_message_get_error(m); |
1040 | if (e) | |
1041 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); | |
1346b1f0 TG |
1042 | |
1043 | return 1; | |
1044 | } | |
1045 | ||
3c9b8860 | 1046 | int link_set_hostname(Link *link, const char *hostname) { |
21b80ad1 | 1047 | int r; |
1346b1f0 | 1048 | |
b226d99b TG |
1049 | assert(link); |
1050 | assert(link->manager); | |
1346b1f0 | 1051 | |
dce391e7 | 1052 | log_link_debug(link, "Setting transient hostname: '%s'", strna(hostname)); |
1346b1f0 | 1053 | |
3c9b8860 TG |
1054 | if (!link->manager->bus) { |
1055 | /* TODO: replace by assert when we can rely on kdbus */ | |
6a7a4e4d | 1056 | log_link_info(link, "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
1057 | return 0; |
1058 | } | |
1059 | ||
9c34154a | 1060 | r = sd_bus_call_method_async( |
b226d99b | 1061 | link->manager->bus, |
9c34154a | 1062 | NULL, |
1346b1f0 TG |
1063 | "org.freedesktop.hostname1", |
1064 | "/org/freedesktop/hostname1", | |
1065 | "org.freedesktop.hostname1", | |
9c34154a UTL |
1066 | "SetHostname", |
1067 | set_hostname_handler, | |
1068 | link, | |
1069 | "sb", | |
1070 | hostname, | |
1071 | false); | |
1346b1f0 | 1072 | |
6a7a4e4d LP |
1073 | if (r < 0) |
1074 | return log_link_error_errno(link, r, "Could not set transient hostname: %m"); | |
b226d99b TG |
1075 | |
1076 | link_ref(link); | |
1346b1f0 | 1077 | |
5da8149f | 1078 | return 0; |
1346b1f0 TG |
1079 | } |
1080 | ||
21b80ad1 LP |
1081 | static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
1082 | _cleanup_link_unref_ Link *link = userdata; | |
1083 | const sd_bus_error *e; | |
1084 | ||
1085 | assert(m); | |
1086 | assert(link); | |
1087 | ||
1088 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1089 | return 1; | |
1090 | ||
1091 | e = sd_bus_message_get_error(m); | |
1092 | if (e) | |
1093 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); | |
1094 | ||
1095 | return 1; | |
1096 | } | |
1097 | ||
64d6c229 | 1098 | int link_set_timezone(Link *link, const char *tz) { |
21b80ad1 LP |
1099 | int r; |
1100 | ||
1101 | assert(link); | |
1102 | assert(link->manager); | |
64d6c229 | 1103 | assert(tz); |
21b80ad1 | 1104 | |
64d6c229 | 1105 | log_link_debug(link, "Setting system timezone: '%s'", tz); |
21b80ad1 LP |
1106 | |
1107 | if (!link->manager->bus) { | |
1108 | log_link_info(link, "Not connected to system bus, ignoring timezone."); | |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | r = sd_bus_call_method_async( | |
1113 | link->manager->bus, | |
1114 | NULL, | |
1115 | "org.freedesktop.timedate1", | |
1116 | "/org/freedesktop/timedate1", | |
1117 | "org.freedesktop.timedate1", | |
1118 | "SetTimezone", | |
1119 | set_timezone_handler, | |
1120 | link, | |
1121 | "sb", | |
64d6c229 | 1122 | tz, |
21b80ad1 LP |
1123 | false); |
1124 | if (r < 0) | |
1125 | return log_link_error_errno(link, r, "Could not set timezone: %m"); | |
1126 | ||
1127 | link_ref(link); | |
1128 | ||
1129 | return 0; | |
1130 | } | |
1131 | ||
1c4baffc | 1132 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1133 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
1134 | int r; |
1135 | ||
1136 | assert(m); | |
1137 | assert(link); | |
1138 | assert(link->ifname); | |
1139 | ||
5da8149f | 1140 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1141 | return 1; |
1142 | ||
1c4baffc | 1143 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 1144 | if (r < 0) |
a2fae7bb | 1145 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
4f882b2a TG |
1146 | |
1147 | return 1; | |
1148 | } | |
1149 | ||
3c9b8860 | 1150 | int link_set_mtu(Link *link, uint32_t mtu) { |
4afd3348 | 1151 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f882b2a TG |
1152 | int r; |
1153 | ||
1154 | assert(link); | |
1155 | assert(link->manager); | |
1156 | assert(link->manager->rtnl); | |
1157 | ||
6a7a4e4d | 1158 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1159 | |
6a7a4e4d LP |
1160 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1161 | if (r < 0) | |
1162 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1163 | |
1c4baffc | 1164 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1165 | if (r < 0) |
1166 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1167 | |
1c4baffc | 1168 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
1169 | if (r < 0) |
1170 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1171 | |
ae941762 | 1172 | link_ref(link); |
b226d99b | 1173 | |
4f882b2a TG |
1174 | return 0; |
1175 | } | |
1176 | ||
e1853b00 | 1177 | static int link_set_bridge(Link *link) { |
4afd3348 | 1178 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
e1853b00 SS |
1179 | int r; |
1180 | ||
1181 | assert(link); | |
1182 | assert(link->network); | |
1183 | ||
6a7a4e4d LP |
1184 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1185 | if (r < 0) | |
1186 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1187 | |
1188 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1189 | if (r < 0) |
1190 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1191 | |
1c4baffc | 1192 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1193 | if (r < 0) |
1194 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1195 | |
84c34096 | 1196 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, !link->network->use_bpdu); |
eb7ff4dd SS |
1197 | if (r < 0) |
1198 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1199 | ||
1200 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1201 | if (r < 0) | |
1202 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1203 | ||
1204 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1205 | if (r < 0) | |
1206 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1207 | ||
23da66bb | 1208 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, !link->network->allow_port_to_be_root); |
eb7ff4dd SS |
1209 | if (r < 0) |
1210 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
1211 | ||
1212 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1213 | if (r < 0) | |
1214 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
1215 | ||
e1853b00 | 1216 | if(link->network->cost != 0) { |
1c4baffc | 1217 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1218 | if (r < 0) |
1219 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 SS |
1220 | } |
1221 | ||
1c4baffc | 1222 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1223 | if (r < 0) |
1224 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1225 | |
1c4baffc | 1226 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
1227 | if (r < 0) |
1228 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1229 | |
1230 | link_ref(link); | |
1231 | ||
1232 | return r; | |
1233 | } | |
1234 | ||
49699bac SS |
1235 | static void lldp_handler(sd_lldp *lldp, int event, void *userdata) { |
1236 | Link *link = userdata; | |
1237 | int r; | |
1238 | ||
1239 | assert(link); | |
1240 | assert(link->network); | |
1241 | assert(link->manager); | |
1242 | ||
9ef61f2e DH |
1243 | switch (event) { |
1244 | case SD_LLDP_EVENT_UPDATE_INFO: | |
1245 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
1246 | if (r < 0) | |
1247 | log_link_warning_errno(link, r, "Could not save LLDP: %m"); | |
49699bac | 1248 | |
9ef61f2e DH |
1249 | break; |
1250 | default: | |
1251 | break; | |
1252 | } | |
49699bac SS |
1253 | } |
1254 | ||
e7ab854c TG |
1255 | static int link_acquire_ipv6_conf(Link *link) { |
1256 | int r; | |
1257 | ||
1258 | assert(link); | |
1259 | ||
1260 | if (link_dhcp6_enabled(link)) { | |
1261 | assert(link->dhcp6_client); | |
c601ebf7 | 1262 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); |
e7ab854c TG |
1263 | |
1264 | log_link_debug(link, "Acquiring DHCPv6 lease"); | |
1265 | ||
c601ebf7 TG |
1266 | r = sd_dhcp6_client_set_local_address(link->dhcp6_client, &link->ipv6ll_address); |
1267 | if (r < 0 && r != -EBUSY) | |
1268 | return log_link_warning_errno(link, r, "Could not set IPv6LL address in DHCP client: %m"); | |
1269 | ||
e7ab854c | 1270 | r = sd_dhcp6_client_start(link->dhcp6_client); |
63348d13 | 1271 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1272 | return log_link_warning_errno(link, r, "Could not acquire DHCPv6 lease: %m"); |
1273 | } | |
1274 | ||
1275 | if (link_ipv6_accept_ra_enabled(link)) { | |
1276 | assert(link->ndisc_router_discovery); | |
1277 | ||
1278 | log_link_debug(link, "Discovering IPv6 routers"); | |
1279 | ||
1280 | r = sd_ndisc_router_discovery_start(link->ndisc_router_discovery); | |
63348d13 | 1281 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1282 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
1283 | } | |
1284 | ||
1285 | return 0; | |
1286 | } | |
1287 | ||
ff254138 TG |
1288 | static int link_acquire_conf(Link *link) { |
1289 | int r; | |
1290 | ||
1291 | assert(link); | |
1292 | assert(link->network); | |
ff254138 TG |
1293 | assert(link->manager); |
1294 | assert(link->manager->event); | |
1295 | ||
78c958f8 | 1296 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1297 | assert(link->ipv4ll); |
ff254138 | 1298 | |
6a7a4e4d | 1299 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1300 | |
1301 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1302 | if (r < 0) |
1303 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1304 | } |
1305 | ||
78c958f8 | 1306 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1307 | assert(link->dhcp_client); |
ff254138 | 1308 | |
6a7a4e4d | 1309 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1310 | |
5c1d3fc9 | 1311 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1312 | if (r < 0) |
1313 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1314 | } |
ff254138 | 1315 | |
ce43e484 SS |
1316 | if (link_lldp_enabled(link)) { |
1317 | assert(link->lldp); | |
1318 | ||
1319 | log_link_debug(link, "Starting LLDP"); | |
1320 | ||
1321 | r = sd_lldp_start(link->lldp); | |
6a7a4e4d LP |
1322 | if (r < 0) |
1323 | return log_link_warning_errno(link, r, "Could not start LLDP: %m"); | |
ce43e484 SS |
1324 | } |
1325 | ||
ff254138 TG |
1326 | return 0; |
1327 | } | |
1328 | ||
a61bb41c | 1329 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1330 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1331 | ||
a61bb41c | 1332 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1333 | return true; |
1334 | ||
a61bb41c | 1335 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1336 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1337 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1338 | return true; |
1339 | ||
1340 | return false; | |
1341 | } | |
1342 | ||
1c4baffc | 1343 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1344 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1345 | int r; |
1346 | ||
1746cf2a TG |
1347 | assert(link); |
1348 | ||
5da8149f | 1349 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1350 | return 1; |
1351 | ||
1c4baffc | 1352 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
1353 | if (r < 0) |
1354 | /* we warn but don't fail the link, as it may be | |
1355 | brought up later */ | |
a2fae7bb | 1356 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1357 | |
f882c247 TG |
1358 | return 1; |
1359 | } | |
1360 | ||
1361 | static int link_up(Link *link) { | |
4afd3348 | 1362 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
5c3072ea | 1363 | uint8_t ipv6ll_mode; |
f579559b TG |
1364 | int r; |
1365 | ||
f882c247 | 1366 | assert(link); |
c106cc36 | 1367 | assert(link->network); |
f882c247 TG |
1368 | assert(link->manager); |
1369 | assert(link->manager->rtnl); | |
1370 | ||
6a7a4e4d | 1371 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1372 | |
6a7a4e4d LP |
1373 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1374 | if (r < 0) | |
1375 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1376 | |
5d4795f3 | 1377 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1378 | if (r < 0) |
1379 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1380 | |
c106cc36 | 1381 | if (link->network->mac) { |
1c4baffc | 1382 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1383 | if (r < 0) |
1384 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1385 | } |
1386 | ||
1387 | if (link->network->mtu) { | |
1c4baffc | 1388 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1389 | if (r < 0) |
1390 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1391 | } |
1392 | ||
1c4baffc | 1393 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1394 | if (r < 0) |
1395 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1396 | |
01d28f81 TG |
1397 | if (socket_ipv6_is_supported()) { |
1398 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ | |
1c4baffc | 1399 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1400 | if (r < 0) |
1401 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1402 | |
01d28f81 | 1403 | ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE; |
1c4baffc | 1404 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1405 | if (r < 0) |
1406 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1407 | |
01d28f81 | 1408 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1409 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1410 | if (r < 0) |
1411 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1412 | } | |
1413 | ||
1c4baffc | 1414 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1415 | if (r < 0) |
01d28f81 | 1416 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1417 | } |
d0d6a4cd | 1418 | |
1c4baffc | 1419 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1420 | if (r < 0) |
1421 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1422 | |
1c4baffc | 1423 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1424 | if (r < 0) |
1425 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1426 | |
b226d99b TG |
1427 | link_ref(link); |
1428 | ||
f882c247 TG |
1429 | return 0; |
1430 | } | |
1431 | ||
1c4baffc | 1432 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1433 | _cleanup_link_unref_ Link *link = userdata; |
1434 | int r; | |
1435 | ||
1436 | assert(link); | |
1437 | ||
1438 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1439 | return 1; | |
1440 | ||
1c4baffc | 1441 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1442 | if (r < 0) |
a2fae7bb | 1443 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d AR |
1444 | |
1445 | return 1; | |
1446 | } | |
1447 | ||
1448 | static int link_down(Link *link) { | |
4afd3348 | 1449 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
0d4ad91d AR |
1450 | int r; |
1451 | ||
1452 | assert(link); | |
1453 | assert(link->manager); | |
1454 | assert(link->manager->rtnl); | |
1455 | ||
6a7a4e4d | 1456 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1457 | |
1458 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1459 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1460 | if (r < 0) |
1461 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1462 | |
1463 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1464 | if (r < 0) |
1465 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1466 | |
1c4baffc | 1467 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1468 | if (r < 0) |
1469 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1470 | |
1471 | link_ref(link); | |
1472 | ||
1473 | return 0; | |
1474 | } | |
1475 | ||
1476 | static int link_handle_bound_to_list(Link *link) { | |
1477 | Link *l; | |
1478 | Iterator i; | |
1479 | int r; | |
1480 | bool required_up = false; | |
1481 | bool link_is_up = false; | |
1482 | ||
1483 | assert(link); | |
1484 | ||
1485 | if (hashmap_isempty(link->bound_to_links)) | |
1486 | return 0; | |
1487 | ||
1488 | if (link->flags & IFF_UP) | |
1489 | link_is_up = true; | |
1490 | ||
1491 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1492 | if (link_has_carrier(l)) { | |
1493 | required_up = true; | |
1494 | break; | |
1495 | } | |
1496 | ||
1497 | if (!required_up && link_is_up) { | |
1498 | r = link_down(link); | |
1499 | if (r < 0) | |
1500 | return r; | |
1501 | } else if (required_up && !link_is_up) { | |
1502 | r = link_up(link); | |
1503 | if (r < 0) | |
1504 | return r; | |
1505 | } | |
1506 | ||
1507 | return 0; | |
1508 | } | |
1509 | ||
1510 | static int link_handle_bound_by_list(Link *link) { | |
1511 | Iterator i; | |
1512 | Link *l; | |
1513 | int r; | |
1514 | ||
1515 | assert(link); | |
1516 | ||
1517 | if (hashmap_isempty(link->bound_by_links)) | |
1518 | return 0; | |
1519 | ||
1520 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1521 | r = link_handle_bound_to_list(l); | |
1522 | if (r < 0) | |
1523 | return r; | |
1524 | } | |
1525 | ||
1526 | return 0; | |
1527 | } | |
1528 | ||
1529 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1530 | int r; | |
1531 | ||
1532 | assert(link); | |
1533 | assert(carrier); | |
1534 | ||
1535 | if (link == carrier) | |
1536 | return 0; | |
1537 | ||
1538 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1539 | return 0; | |
1540 | ||
1541 | r = hashmap_ensure_allocated(h, NULL); | |
1542 | if (r < 0) | |
1543 | return r; | |
1544 | ||
1545 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1546 | if (r < 0) | |
1547 | return r; | |
1548 | ||
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | static int link_new_bound_by_list(Link *link) { | |
1553 | Manager *m; | |
1554 | Link *carrier; | |
1555 | Iterator i; | |
1556 | int r; | |
1557 | bool list_updated = false; | |
1558 | ||
1559 | assert(link); | |
1560 | assert(link->manager); | |
1561 | ||
1562 | m = link->manager; | |
1563 | ||
1564 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1565 | if (!carrier->network) | |
1566 | continue; | |
1567 | ||
1568 | if (strv_isempty(carrier->network->bind_carrier)) | |
1569 | continue; | |
1570 | ||
1571 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1572 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1573 | if (r < 0) | |
1574 | return r; | |
1575 | ||
1576 | list_updated = true; | |
1577 | } | |
1578 | } | |
1579 | ||
1580 | if (list_updated) | |
84de38c5 | 1581 | link_dirty(link); |
0d4ad91d AR |
1582 | |
1583 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) { | |
1584 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); | |
1585 | if (r < 0) | |
1586 | return r; | |
1587 | ||
84de38c5 | 1588 | link_dirty(carrier); |
0d4ad91d AR |
1589 | } |
1590 | ||
1591 | return 0; | |
1592 | } | |
1593 | ||
1594 | static int link_new_bound_to_list(Link *link) { | |
1595 | Manager *m; | |
1596 | Link *carrier; | |
1597 | Iterator i; | |
1598 | int r; | |
1599 | bool list_updated = false; | |
1600 | ||
1601 | assert(link); | |
1602 | assert(link->manager); | |
1603 | ||
1604 | if (!link->network) | |
1605 | return 0; | |
1606 | ||
1607 | if (strv_isempty(link->network->bind_carrier)) | |
1608 | return 0; | |
1609 | ||
1610 | m = link->manager; | |
1611 | ||
1612 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1613 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1614 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1615 | if (r < 0) | |
1616 | return r; | |
1617 | ||
1618 | list_updated = true; | |
1619 | } | |
1620 | } | |
1621 | ||
1622 | if (list_updated) | |
84de38c5 | 1623 | link_dirty(link); |
0d4ad91d AR |
1624 | |
1625 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1626 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1627 | if (r < 0) | |
1628 | return r; | |
1629 | ||
84de38c5 | 1630 | link_dirty(carrier); |
0d4ad91d AR |
1631 | } |
1632 | ||
1633 | return 0; | |
1634 | } | |
1635 | ||
1636 | static int link_new_carrier_maps(Link *link) { | |
1637 | int r; | |
1638 | ||
1639 | r = link_new_bound_by_list(link); | |
1640 | if (r < 0) | |
1641 | return r; | |
1642 | ||
1643 | r = link_handle_bound_by_list(link); | |
1644 | if (r < 0) | |
1645 | return r; | |
1646 | ||
1647 | r = link_new_bound_to_list(link); | |
1648 | if (r < 0) | |
1649 | return r; | |
1650 | ||
1651 | r = link_handle_bound_to_list(link); | |
1652 | if (r < 0) | |
1653 | return r; | |
1654 | ||
1655 | return 0; | |
1656 | } | |
1657 | ||
1658 | static void link_free_bound_to_list(Link *link) { | |
1659 | Link *bound_to; | |
1660 | Iterator i; | |
1661 | ||
1662 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
1663 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
1664 | ||
1665 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1666 | link_dirty(bound_to); |
0d4ad91d AR |
1667 | } |
1668 | ||
1669 | return; | |
1670 | } | |
1671 | ||
1672 | static void link_free_bound_by_list(Link *link) { | |
1673 | Link *bound_by; | |
1674 | Iterator i; | |
1675 | ||
1676 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
1677 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
1678 | ||
1679 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1680 | link_dirty(bound_by); |
0d4ad91d AR |
1681 | link_handle_bound_to_list(bound_by); |
1682 | } | |
1683 | } | |
1684 | ||
1685 | return; | |
1686 | } | |
1687 | ||
1688 | static void link_free_carrier_maps(Link *link) { | |
1689 | bool list_updated = false; | |
1690 | ||
1691 | assert(link); | |
1692 | ||
1693 | if (!hashmap_isempty(link->bound_to_links)) { | |
1694 | link_free_bound_to_list(link); | |
1695 | list_updated = true; | |
1696 | } | |
1697 | ||
1698 | if (!hashmap_isempty(link->bound_by_links)) { | |
1699 | link_free_bound_by_list(link); | |
1700 | list_updated = true; | |
1701 | } | |
1702 | ||
1703 | if (list_updated) | |
84de38c5 | 1704 | link_dirty(link); |
0d4ad91d AR |
1705 | |
1706 | return; | |
1707 | } | |
1708 | ||
1709 | void link_drop(Link *link) { | |
1710 | if (!link || link->state == LINK_STATE_LINGER) | |
1711 | return; | |
1712 | ||
1713 | link_set_state(link, LINK_STATE_LINGER); | |
1714 | ||
1715 | link_free_carrier_maps(link); | |
1716 | ||
6a7a4e4d | 1717 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1718 | |
84de38c5 | 1719 | (void)unlink(link->state_file); |
0d4ad91d AR |
1720 | link_unref(link); |
1721 | ||
1722 | return; | |
1723 | } | |
1724 | ||
3f265037 | 1725 | static int link_joined(Link *link) { |
f882c247 TG |
1726 | int r; |
1727 | ||
ef1ba606 | 1728 | assert(link); |
f5be5601 | 1729 | assert(link->network); |
dd3efc09 | 1730 | |
0d4ad91d AR |
1731 | if (!hashmap_isempty(link->bound_to_links)) { |
1732 | r = link_handle_bound_to_list(link); | |
1733 | if (r < 0) | |
1734 | return r; | |
1735 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1736 | r = link_up(link); |
1737 | if (r < 0) { | |
1738 | link_enter_failed(link); | |
1739 | return r; | |
1740 | } | |
ef1ba606 | 1741 | } |
f882c247 | 1742 | |
e1853b00 SS |
1743 | if(link->network->bridge) { |
1744 | r = link_set_bridge(link); | |
6a7a4e4d LP |
1745 | if (r < 0) |
1746 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
1747 | } |
1748 | ||
fb6730c4 | 1749 | return link_enter_set_addresses(link); |
02b59d57 TG |
1750 | } |
1751 | ||
62e2d5bb | 1752 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1753 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1754 | int r; |
1755 | ||
1746cf2a | 1756 | assert(link); |
ef1ba606 | 1757 | assert(link->network); |
02b59d57 | 1758 | |
52433f6b TG |
1759 | link->enslaving --; |
1760 | ||
5da8149f | 1761 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1762 | return 1; |
1763 | ||
1c4baffc | 1764 | r = sd_netlink_message_get_errno(m); |
856f962c | 1765 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 1766 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
1767 | link_enter_failed(link); |
1768 | return 1; | |
ba179154 | 1769 | } else |
6a7a4e4d | 1770 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 1771 | |
856f962c | 1772 | if (link->enslaving <= 0) |
3f265037 | 1773 | link_joined(link); |
02b59d57 TG |
1774 | |
1775 | return 1; | |
1776 | } | |
1777 | ||
3f265037 | 1778 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1779 | NetDev *netdev; |
672682a6 | 1780 | Iterator i; |
02b59d57 TG |
1781 | int r; |
1782 | ||
1783 | assert(link); | |
1784 | assert(link->network); | |
8434fd5c | 1785 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1786 | |
e331e246 | 1787 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 1788 | |
84de38c5 | 1789 | link_dirty(link); |
fe8db0c5 | 1790 | |
7951dea2 SS |
1791 | if (!link->network->bridge && |
1792 | !link->network->bond && | |
6a0a2f86 | 1793 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1794 | return link_joined(link); |
02b59d57 | 1795 | |
d9c67ea1 | 1796 | if (link->network->bond) { |
f2341e0a LP |
1797 | log_struct(LOG_DEBUG, |
1798 | LOG_LINK_INTERFACE(link), | |
1799 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1800 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
1801 | NULL); | |
1802 | ||
1803 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 1804 | if (r < 0) { |
f2341e0a LP |
1805 | log_struct_errno(LOG_WARNING, r, |
1806 | LOG_LINK_INTERFACE(link), | |
1807 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1808 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
1809 | NULL); | |
1810 | ||
52433f6b TG |
1811 | link_enter_failed(link); |
1812 | return r; | |
1813 | } | |
1814 | ||
0ad6148e MO |
1815 | link->enslaving ++; |
1816 | } | |
1817 | ||
d9c67ea1 | 1818 | if (link->network->bridge) { |
f2341e0a LP |
1819 | log_struct(LOG_DEBUG, |
1820 | LOG_LINK_INTERFACE(link), | |
1821 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1822 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
1823 | NULL); | |
1824 | ||
1825 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 1826 | if (r < 0) { |
f2341e0a LP |
1827 | log_struct_errno(LOG_WARNING, r, |
1828 | LOG_LINK_INTERFACE(link), | |
1829 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1830 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
1831 | NULL), | |
0ad6148e MO |
1832 | link_enter_failed(link); |
1833 | return r; | |
1834 | } | |
1835 | ||
52433f6b TG |
1836 | link->enslaving ++; |
1837 | } | |
1838 | ||
6a0a2f86 | 1839 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 1840 | |
f2341e0a LP |
1841 | log_struct(LOG_DEBUG, |
1842 | LOG_LINK_INTERFACE(link), | |
1843 | LOG_NETDEV_INTERFACE(netdev), | |
1844 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
1845 | NULL); | |
1846 | ||
1847 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 1848 | if (r < 0) { |
f2341e0a LP |
1849 | log_struct_errno(LOG_WARNING, r, |
1850 | LOG_LINK_INTERFACE(link), | |
1851 | LOG_NETDEV_INTERFACE(netdev), | |
1852 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
1853 | NULL); | |
326cb406 SS |
1854 | link_enter_failed(link); |
1855 | return r; | |
1856 | } | |
1857 | ||
326cb406 SS |
1858 | link->enslaving ++; |
1859 | } | |
1860 | ||
ef1ba606 TG |
1861 | return 0; |
1862 | } | |
1863 | ||
769d324c | 1864 | static int link_set_ipv4_forward(Link *link) { |
5a8bcb67 LP |
1865 | int r; |
1866 | ||
765afd5c | 1867 | if (!link_ipv4_forward_enabled(link)) |
15dee3f0 LP |
1868 | return 0; |
1869 | ||
765afd5c LP |
1870 | /* We propagate the forwarding flag from one interface to the |
1871 | * global setting one way. This means: as long as at least one | |
1872 | * interface was configured at any time that had IP forwarding | |
1873 | * enabled the setting will stay on for good. We do this | |
1874 | * primarily to keep IPv4 and IPv6 packet forwarding behaviour | |
1875 | * somewhat in sync (see below). */ | |
15dee3f0 | 1876 | |
765afd5c | 1877 | r = write_string_file("/proc/sys/net/ipv4/ip_forward", "1", WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
eb3da901 | 1878 | if (r < 0) |
765afd5c | 1879 | log_link_warning_errno(link, r, "Cannot turn on IPv4 packet forwarding, ignoring: %m"); |
43c6d5ab | 1880 | |
769d324c LP |
1881 | return 0; |
1882 | } | |
1883 | ||
1884 | static int link_set_ipv6_forward(Link *link) { | |
769d324c LP |
1885 | int r; |
1886 | ||
765afd5c | 1887 | if (!link_ipv6_forward_enabled(link)) |
8add5f79 NO |
1888 | return 0; |
1889 | ||
765afd5c LP |
1890 | /* On Linux, the IPv6 stack does not not know a per-interface |
1891 | * packet forwarding setting: either packet forwarding is on | |
1892 | * for all, or off for all. We hence don't bother with a | |
1893 | * per-interface setting, but simply propagate the interface | |
1894 | * flag, if it is set, to the global flag, one-way. Note that | |
1895 | * while IPv4 would allow a per-interface flag, we expose the | |
1896 | * same behaviour there and also propagate the setting from | |
1897 | * one to all, to keep things simple (see above). */ | |
15dee3f0 | 1898 | |
765afd5c | 1899 | r = write_string_file("/proc/sys/net/ipv6/conf/all/forwarding", "1", WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
eb3da901 | 1900 | if (r < 0) |
765afd5c | 1901 | log_link_warning_errno(link, r, "Cannot configure IPv6 packet forwarding, ignoring: %m"); |
5a8bcb67 LP |
1902 | |
1903 | return 0; | |
1904 | } | |
1905 | ||
49092e22 | 1906 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 LP |
1907 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; |
1908 | IPv6PrivacyExtensions s; | |
49092e22 SS |
1909 | const char *p = NULL; |
1910 | int r; | |
1911 | ||
1f0d9695 | 1912 | s = link_ipv6_privacy_extensions(link); |
66a6bd68 | 1913 | if (s < 0) |
49092e22 SS |
1914 | return 0; |
1915 | ||
1916 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
66a6bd68 | 1917 | xsprintf(buf, "%u", (unsigned) link->network->ipv6_privacy_extensions); |
49092e22 | 1918 | |
eb3da901 LP |
1919 | r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
1920 | if (r < 0) | |
49092e22 SS |
1921 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
1922 | ||
1923 | return 0; | |
1924 | } | |
1925 | ||
4f2e437a | 1926 | static int link_set_ipv6_accept_ra(Link *link) { |
3b015d40 | 1927 | const char *p = NULL; |
4f2e437a SS |
1928 | int r; |
1929 | ||
1930 | /* Make this a NOP if IPv6 is not available */ | |
1931 | if (!socket_ipv6_is_supported()) | |
1932 | return 0; | |
1933 | ||
1934 | if (link->flags & IFF_LOOPBACK) | |
1935 | return 0; | |
1936 | ||
d68e2e59 LP |
1937 | if (!link->network) |
1938 | return 0; | |
1939 | ||
4f2e437a | 1940 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); |
4f2e437a | 1941 | |
fe307276 TG |
1942 | /* We handle router advertisments ourselves, tell the kernel to GTFO */ |
1943 | r = write_string_file(p, "0", WRITE_STRING_FILE_VERIFY_ON_FAILURE); | |
eb3da901 | 1944 | if (r < 0) |
fe307276 | 1945 | log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface: %m"); |
4f2e437a SS |
1946 | |
1947 | return 0; | |
1948 | } | |
1949 | ||
8749cbcd | 1950 | static int link_set_ipv6_dad_transmits(Link *link) { |
66a6bd68 | 1951 | char buf[DECIMAL_STR_MAX(int) + 1]; |
8749cbcd SS |
1952 | const char *p = NULL; |
1953 | int r; | |
1954 | ||
1955 | /* Make this a NOP if IPv6 is not available */ | |
1956 | if (!socket_ipv6_is_supported()) | |
1957 | return 0; | |
1958 | ||
1959 | if (link->flags & IFF_LOOPBACK) | |
1960 | return 0; | |
1961 | ||
d68e2e59 LP |
1962 | if (!link->network) |
1963 | return 0; | |
1964 | ||
8749cbcd SS |
1965 | if (link->network->ipv6_dad_transmits < 0) |
1966 | return 0; | |
1967 | ||
1968 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); | |
66a6bd68 | 1969 | xsprintf(buf, "%i", link->network->ipv6_dad_transmits); |
8749cbcd | 1970 | |
eb3da901 LP |
1971 | r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
1972 | if (r < 0) | |
8749cbcd | 1973 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); |
8749cbcd SS |
1974 | |
1975 | return 0; | |
1976 | } | |
1977 | ||
b69c3180 | 1978 | static int link_set_ipv6_hop_limit(Link *link) { |
66a6bd68 | 1979 | char buf[DECIMAL_STR_MAX(int) + 1]; |
b69c3180 SS |
1980 | const char *p = NULL; |
1981 | int r; | |
1982 | ||
1983 | /* Make this a NOP if IPv6 is not available */ | |
1984 | if (!socket_ipv6_is_supported()) | |
1985 | return 0; | |
1986 | ||
1987 | if (link->flags & IFF_LOOPBACK) | |
1988 | return 0; | |
1989 | ||
d68e2e59 LP |
1990 | if (!link->network) |
1991 | return 0; | |
1992 | ||
b69c3180 SS |
1993 | if (link->network->ipv6_hop_limit < 0) |
1994 | return 0; | |
1995 | ||
1996 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/hop_limit"); | |
66a6bd68 | 1997 | xsprintf(buf, "%i", link->network->ipv6_hop_limit); |
b69c3180 | 1998 | |
eb3da901 LP |
1999 | r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
2000 | if (r < 0) | |
b69c3180 | 2001 | log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m"); |
b69c3180 SS |
2002 | |
2003 | return 0; | |
2004 | } | |
2005 | ||
5e5b137a TG |
2006 | static int link_drop_foreign_config(Link *link) { |
2007 | Address *address; | |
2008 | Route *route; | |
2009 | Iterator i; | |
2010 | int r; | |
2011 | ||
2012 | SET_FOREACH(address, link->addresses_foreign, i) { | |
fe307276 | 2013 | /* we consider IPv6LL addresses to be managed by the kernel */ |
5e5b137a TG |
2014 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1) |
2015 | continue; | |
2016 | ||
2017 | r = address_remove(address, link, link_address_remove_handler); | |
2018 | if (r < 0) | |
2019 | return r; | |
2020 | } | |
2021 | ||
2022 | SET_FOREACH(route, link->routes_foreign, i) { | |
fe307276 | 2023 | /* do not touch routes managed by the kernel */ |
5e5b137a TG |
2024 | if (route->protocol == RTPROT_KERNEL) |
2025 | continue; | |
2026 | ||
2027 | r = route_remove(route, link, link_address_remove_handler); | |
2028 | if (r < 0) | |
2029 | return r; | |
2030 | } | |
2031 | ||
2032 | return 0; | |
2033 | } | |
2034 | ||
a748b692 | 2035 | static int link_configure(Link *link) { |
02b59d57 TG |
2036 | int r; |
2037 | ||
ef1ba606 | 2038 | assert(link); |
b22d8a00 | 2039 | assert(link->network); |
8434fd5c | 2040 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 2041 | |
e5d44b34 CH |
2042 | /* Drop foreign config, but ignore loopback device. |
2043 | * We do not want to remove loopback address. */ | |
2044 | if (!(link->flags & IFF_LOOPBACK)) { | |
2045 | r = link_drop_foreign_config(link); | |
2046 | if (r < 0) | |
2047 | return r; | |
2048 | } | |
5e5b137a | 2049 | |
b98b483b AR |
2050 | r = link_set_bridge_fdb(link); |
2051 | if (r < 0) | |
2052 | return r; | |
2053 | ||
769d324c LP |
2054 | r = link_set_ipv4_forward(link); |
2055 | if (r < 0) | |
2056 | return r; | |
2057 | ||
2058 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
2059 | if (r < 0) |
2060 | return r; | |
2061 | ||
49092e22 SS |
2062 | r = link_set_ipv6_privacy_extensions(link); |
2063 | if (r < 0) | |
2064 | return r; | |
2065 | ||
4f2e437a SS |
2066 | r = link_set_ipv6_accept_ra(link); |
2067 | if (r < 0) | |
2068 | return r; | |
2069 | ||
8749cbcd SS |
2070 | r = link_set_ipv6_dad_transmits(link); |
2071 | if (r < 0) | |
2072 | return r; | |
b69c3180 SS |
2073 | |
2074 | r = link_set_ipv6_hop_limit(link); | |
2075 | if (r < 0) | |
2076 | return r; | |
8749cbcd | 2077 | |
78c958f8 | 2078 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 2079 | r = ipv4ll_configure(link); |
eb34d4af TG |
2080 | if (r < 0) |
2081 | return r; | |
2082 | } | |
2083 | ||
78c958f8 | 2084 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 2085 | r = dhcp4_configure(link); |
eb34d4af TG |
2086 | if (r < 0) |
2087 | return r; | |
eb34d4af TG |
2088 | } |
2089 | ||
78c958f8 | 2090 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
2091 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
2092 | if (r < 0) | |
2093 | return r; | |
2094 | ||
2095 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
2096 | if (r < 0) | |
2097 | return r; | |
dd43110f TG |
2098 | } |
2099 | ||
62379e88 TG |
2100 | if (link_dhcp6_enabled(link) || |
2101 | link_ipv6_accept_ra_enabled(link)) { | |
f5a8c43f TG |
2102 | r = dhcp6_configure(link); |
2103 | if (r < 0) | |
2104 | return r; | |
2105 | } | |
2106 | ||
2107 | if (link_ipv6_accept_ra_enabled(link)) { | |
de1e9928 | 2108 | r = ndisc_configure(link); |
4138fb2c PF |
2109 | if (r < 0) |
2110 | return r; | |
2111 | } | |
2112 | ||
ce43e484 SS |
2113 | if (link_lldp_enabled(link)) { |
2114 | r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp); | |
2115 | if (r < 0) | |
2116 | return r; | |
2117 | ||
2118 | r = sd_lldp_attach_event(link->lldp, NULL, 0); | |
2119 | if (r < 0) | |
2120 | return r; | |
49699bac SS |
2121 | |
2122 | r = sd_lldp_set_callback(link->lldp, | |
2123 | lldp_handler, link); | |
2124 | if (r < 0) | |
2125 | return r; | |
ce43e484 SS |
2126 | } |
2127 | ||
a61bb41c | 2128 | if (link_has_carrier(link)) { |
1e9be60b TG |
2129 | r = link_acquire_conf(link); |
2130 | if (r < 0) | |
2131 | return r; | |
e7ab854c | 2132 | |
c601ebf7 | 2133 | if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) == 0) { |
e7ab854c TG |
2134 | r = link_acquire_ipv6_conf(link); |
2135 | if (r < 0) | |
2136 | return r; | |
2137 | } | |
cc544d5f | 2138 | } |
1e9be60b | 2139 | |
3f265037 | 2140 | return link_enter_join_netdev(link); |
505f8da7 TG |
2141 | } |
2142 | ||
1c4baffc | 2143 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 2144 | void *userdata) { |
5da8149f | 2145 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 2146 | Network *network; |
505f8da7 TG |
2147 | int r; |
2148 | ||
2149 | assert(link); | |
2150 | assert(link->ifname); | |
2151 | assert(link->manager); | |
2152 | ||
8434fd5c | 2153 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 2154 | return 1; |
505f8da7 | 2155 | |
6a7a4e4d | 2156 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 2157 | |
0d4ad91d AR |
2158 | r = link_new_bound_by_list(link); |
2159 | if (r < 0) | |
2160 | return r; | |
2161 | ||
2162 | r = link_handle_bound_by_list(link); | |
2163 | if (r < 0) | |
2164 | return r; | |
2165 | ||
c4a03a56 TG |
2166 | if (!link->network) { |
2167 | r = network_get(link->manager, link->udev_device, link->ifname, | |
2168 | &link->mac, &network); | |
2169 | if (r == -ENOENT) { | |
2170 | link_enter_unmanaged(link); | |
2171 | return 1; | |
2172 | } else if (r < 0) | |
2173 | return r; | |
505f8da7 | 2174 | |
c4a03a56 TG |
2175 | if (link->flags & IFF_LOOPBACK) { |
2176 | if (network->link_local != ADDRESS_FAMILY_NO) | |
2177 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 2178 | |
c4a03a56 TG |
2179 | if (network->dhcp != ADDRESS_FAMILY_NO) |
2180 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 2181 | |
c4a03a56 TG |
2182 | if (network->dhcp_server) |
2183 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
2184 | } | |
bd2efe92 | 2185 | |
c4a03a56 TG |
2186 | r = network_apply(link->manager, network, link); |
2187 | if (r < 0) | |
2188 | return r; | |
2189 | } | |
505f8da7 | 2190 | |
0d4ad91d AR |
2191 | r = link_new_bound_to_list(link); |
2192 | if (r < 0) | |
2193 | return r; | |
2194 | ||
a748b692 TG |
2195 | r = link_configure(link); |
2196 | if (r < 0) | |
2197 | return r; | |
2198 | ||
5da8149f | 2199 | return 1; |
505f8da7 TG |
2200 | } |
2201 | ||
4f561e8e | 2202 | int link_initialized(Link *link, struct udev_device *device) { |
4afd3348 | 2203 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f561e8e TG |
2204 | int r; |
2205 | ||
2206 | assert(link); | |
2207 | assert(link->manager); | |
2208 | assert(link->manager->rtnl); | |
2209 | assert(device); | |
2210 | ||
8434fd5c | 2211 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2212 | return 0; |
2213 | ||
679b3605 TG |
2214 | if (link->udev_device) |
2215 | return 0; | |
2216 | ||
79008bdd | 2217 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
2218 | |
2219 | link->udev_device = udev_device_ref(device); | |
2220 | ||
3c9b8860 TG |
2221 | /* udev has initialized the link, but we don't know if we have yet |
2222 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2223 | * when it returns we know that the pending NEWLINKs have already been | |
2224 | * processed and that we are up-to-date */ | |
4f561e8e | 2225 | |
3c9b8860 TG |
2226 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2227 | link->ifindex); | |
4f561e8e TG |
2228 | if (r < 0) |
2229 | return r; | |
2230 | ||
1c4baffc | 2231 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 2232 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
2233 | if (r < 0) |
2234 | return r; | |
2235 | ||
5da8149f TG |
2236 | link_ref(link); |
2237 | ||
4f561e8e TG |
2238 | return 0; |
2239 | } | |
2240 | ||
c4a03a56 | 2241 | static int link_load(Link *link) { |
0bc70f1d TG |
2242 | _cleanup_free_ char *network_file = NULL, |
2243 | *addresses = NULL, | |
f703cc2c | 2244 | *routes = NULL, |
0bc70f1d TG |
2245 | *dhcp4_address = NULL, |
2246 | *ipv4ll_address = NULL; | |
2247 | union in_addr_union address; | |
f703cc2c | 2248 | union in_addr_union route_dst; |
c598ac76 | 2249 | const char *p; |
c4a03a56 TG |
2250 | int r; |
2251 | ||
2252 | assert(link); | |
2253 | ||
2254 | r = parse_env_file(link->state_file, NEWLINE, | |
2255 | "NETWORK_FILE", &network_file, | |
2256 | "ADDRESSES", &addresses, | |
f703cc2c | 2257 | "ROUTES", &routes, |
0bc70f1d TG |
2258 | "DHCP4_ADDRESS", &dhcp4_address, |
2259 | "IPV4LL_ADDRESS", &ipv4ll_address, | |
c4a03a56 TG |
2260 | NULL); |
2261 | if (r < 0 && r != -ENOENT) | |
2262 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
2263 | ||
2264 | if (network_file) { | |
2265 | Network *network; | |
2266 | char *suffix; | |
2267 | ||
2268 | /* drop suffix */ | |
2269 | suffix = strrchr(network_file, '.'); | |
2270 | if (!suffix) { | |
2271 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
2272 | goto network_file_fail; | |
2273 | } | |
2274 | *suffix = '\0'; | |
2275 | ||
2276 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
2277 | if (r < 0) { | |
2278 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
2279 | goto network_file_fail; | |
2280 | } | |
2281 | ||
2282 | r = network_apply(link->manager, network, link); | |
2283 | if (r < 0) | |
2284 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
2285 | } | |
2286 | ||
2287 | network_file_fail: | |
2288 | ||
2289 | if (addresses) { | |
c598ac76 | 2290 | p = addresses; |
c4a03a56 | 2291 | |
c598ac76 TG |
2292 | for (;;) { |
2293 | _cleanup_free_ char *address_str = NULL; | |
c4a03a56 TG |
2294 | char *prefixlen_str; |
2295 | int family; | |
2296 | unsigned char prefixlen; | |
c4a03a56 | 2297 | |
c598ac76 TG |
2298 | r = extract_first_word(&p, &address_str, NULL, 0); |
2299 | if (r < 0) { | |
2300 | log_link_debug_errno(link, r, "Failed to extract next address string: %m"); | |
2301 | continue; | |
928bc597 TA |
2302 | } |
2303 | if (r == 0) | |
c598ac76 TG |
2304 | break; |
2305 | ||
2306 | prefixlen_str = strchr(address_str, '/'); | |
c4a03a56 | 2307 | if (!prefixlen_str) { |
c598ac76 | 2308 | log_link_debug(link, "Failed to parse address and prefix length %s", address_str); |
c4a03a56 TG |
2309 | continue; |
2310 | } | |
2311 | ||
2312 | *prefixlen_str ++ = '\0'; | |
2313 | ||
2314 | r = sscanf(prefixlen_str, "%hhu", &prefixlen); | |
2315 | if (r != 1) { | |
2316 | log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str); | |
2317 | continue; | |
2318 | } | |
2319 | ||
c598ac76 | 2320 | r = in_addr_from_string_auto(address_str, &family, &address); |
c4a03a56 | 2321 | if (r < 0) { |
c598ac76 | 2322 | log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str); |
c4a03a56 TG |
2323 | continue; |
2324 | } | |
2325 | ||
2326 | r = address_add(link, family, &address, prefixlen, NULL); | |
2327 | if (r < 0) | |
2328 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
2329 | } | |
2330 | } | |
2331 | ||
f703cc2c | 2332 | if (routes) { |
74544b4e TA |
2333 | p = routes; |
2334 | ||
c598ac76 | 2335 | for (;;) { |
f833694d | 2336 | Route *route; |
c598ac76 | 2337 | _cleanup_free_ char *route_str = NULL; |
4afd3348 | 2338 | _cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL; |
f833694d | 2339 | usec_t lifetime; |
f703cc2c TG |
2340 | char *prefixlen_str; |
2341 | int family; | |
2342 | unsigned char prefixlen, tos, table; | |
2343 | uint32_t priority; | |
2344 | ||
c598ac76 TG |
2345 | r = extract_first_word(&p, &route_str, NULL, 0); |
2346 | if (r < 0) { | |
2347 | log_link_debug_errno(link, r, "Failed to extract next route string: %m"); | |
2348 | continue; | |
928bc597 TA |
2349 | } |
2350 | if (r == 0) | |
c598ac76 TG |
2351 | break; |
2352 | ||
2353 | prefixlen_str = strchr(route_str, '/'); | |
f703cc2c | 2354 | if (!prefixlen_str) { |
c598ac76 | 2355 | log_link_debug(link, "Failed to parse route %s", route_str); |
f703cc2c TG |
2356 | continue; |
2357 | } | |
2358 | ||
2359 | *prefixlen_str ++ = '\0'; | |
2360 | ||
f833694d TG |
2361 | r = sscanf(prefixlen_str, "%hhu/%hhu/%"SCNu32"/%hhu/"USEC_FMT, &prefixlen, &tos, &priority, &table, &lifetime); |
2362 | if (r != 5) { | |
2363 | log_link_debug(link, | |
2364 | "Failed to parse destination prefix length, tos, priority, table or expiration %s", | |
2365 | prefixlen_str); | |
f703cc2c TG |
2366 | continue; |
2367 | } | |
2368 | ||
c598ac76 | 2369 | r = in_addr_from_string_auto(route_str, &family, &route_dst); |
f703cc2c | 2370 | if (r < 0) { |
c598ac76 | 2371 | log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str); |
f703cc2c TG |
2372 | continue; |
2373 | } | |
2374 | ||
f833694d | 2375 | r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route); |
f703cc2c TG |
2376 | if (r < 0) |
2377 | return log_link_error_errno(link, r, "Failed to add route: %m"); | |
f833694d TG |
2378 | |
2379 | if (lifetime != USEC_INFINITY) { | |
2380 | r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), lifetime, | |
2381 | 0, route_expire_handler, route); | |
2382 | if (r < 0) | |
2383 | log_link_warning_errno(link, r, "Could not arm route expiration handler: %m"); | |
2384 | } | |
2385 | ||
2386 | route->lifetime = lifetime; | |
2387 | sd_event_source_unref(route->expire); | |
2388 | route->expire = expire; | |
2389 | expire = NULL; | |
f703cc2c TG |
2390 | } |
2391 | } | |
2392 | ||
0bc70f1d TG |
2393 | if (dhcp4_address) { |
2394 | r = in_addr_from_string(AF_INET, dhcp4_address, &address); | |
2395 | if (r < 0) { | |
2396 | log_link_debug_errno(link, r, "Falied to parse DHCPv4 address %s: %m", dhcp4_address); | |
2397 | goto dhcp4_address_fail; | |
2398 | } | |
2399 | ||
2400 | r = sd_dhcp_client_new(&link->dhcp_client); | |
2401 | if (r < 0) | |
2402 | return log_link_error_errno(link, r, "Falied to create DHCPv4 client: %m"); | |
2403 | ||
2404 | r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in); | |
2405 | if (r < 0) | |
2406 | return log_link_error_errno(link, r, "Falied to set inital DHCPv4 address %s: %m", dhcp4_address); | |
2407 | } | |
2408 | ||
2409 | dhcp4_address_fail: | |
2410 | ||
2411 | if (ipv4ll_address) { | |
2412 | r = in_addr_from_string(AF_INET, ipv4ll_address, &address); | |
2413 | if (r < 0) { | |
2414 | log_link_debug_errno(link, r, "Falied to parse IPv4LL address %s: %m", ipv4ll_address); | |
2415 | goto ipv4ll_address_fail; | |
2416 | } | |
2417 | ||
2418 | r = sd_ipv4ll_new(&link->ipv4ll); | |
2419 | if (r < 0) | |
2420 | return log_link_error_errno(link, r, "Falied to create IPv4LL client: %m"); | |
2421 | ||
2422 | r = sd_ipv4ll_set_address(link->ipv4ll, &address.in); | |
2423 | if (r < 0) | |
2424 | return log_link_error_errno(link, r, "Falied to set inital IPv4LL address %s: %m", ipv4ll_address); | |
2425 | } | |
2426 | ||
2427 | ipv4ll_address_fail: | |
2428 | ||
c4a03a56 TG |
2429 | return 0; |
2430 | } | |
2431 | ||
1c4baffc | 2432 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
2433 | Link *link; |
2434 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
2435 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
2436 | int r; | |
2437 | ||
2438 | assert(m); | |
fbbeb65a | 2439 | assert(m->rtnl); |
505f8da7 TG |
2440 | assert(message); |
2441 | assert(ret); | |
2442 | ||
2443 | r = link_new(m, message, ret); | |
2444 | if (r < 0) | |
2445 | return r; | |
2446 | ||
2447 | link = *ret; | |
2448 | ||
6a7a4e4d | 2449 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2450 | |
c4a03a56 TG |
2451 | r = link_load(link); |
2452 | if (r < 0) | |
2453 | return r; | |
2454 | ||
75f86906 | 2455 | if (detect_container() <= 0) { |
505f8da7 | 2456 | /* not in a container, udev will be around */ |
ae06ab10 | 2457 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 2458 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
5c416fc4 TG |
2459 | if (!device) { |
2460 | r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
2461 | goto failed; | |
2462 | } | |
505f8da7 | 2463 | |
3c4cb064 | 2464 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 2465 | /* not yet ready */ |
79008bdd | 2466 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2467 | return 0; |
3c4cb064 | 2468 | } |
505f8da7 | 2469 | |
4f561e8e TG |
2470 | r = link_initialized(link, device); |
2471 | if (r < 0) | |
5c416fc4 | 2472 | goto failed; |
4f561e8e | 2473 | } else { |
5da8149f TG |
2474 | /* we are calling a callback directly, so must take a ref */ |
2475 | link_ref(link); | |
2476 | ||
4f561e8e TG |
2477 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
2478 | if (r < 0) | |
5c416fc4 | 2479 | goto failed; |
4f561e8e | 2480 | } |
505f8da7 | 2481 | |
a748b692 | 2482 | return 0; |
5c416fc4 TG |
2483 | failed: |
2484 | link_enter_failed(link); | |
2485 | return r; | |
a748b692 TG |
2486 | } |
2487 | ||
c601ebf7 | 2488 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
e7ab854c TG |
2489 | int r; |
2490 | ||
2491 | assert(link); | |
2492 | ||
2493 | log_link_info(link, "Gained IPv6LL"); | |
2494 | ||
c601ebf7 | 2495 | link->ipv6ll_address = *address; |
e7ab854c TG |
2496 | link_check_ready(link); |
2497 | ||
a56a2048 | 2498 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_PENDING, LINK_STATE_UNMANAGED, LINK_STATE_FAILED)) { |
e7ab854c TG |
2499 | r = link_acquire_ipv6_conf(link); |
2500 | if (r < 0) { | |
2501 | link_enter_failed(link); | |
2502 | return r; | |
2503 | } | |
2504 | } | |
2505 | ||
2506 | return 0; | |
2507 | } | |
2508 | ||
9c0a72f9 TG |
2509 | static int link_carrier_gained(Link *link) { |
2510 | int r; | |
2511 | ||
2512 | assert(link); | |
2513 | ||
a56a2048 | 2514 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_PENDING, LINK_STATE_UNMANAGED, LINK_STATE_FAILED)) { |
9c0a72f9 TG |
2515 | r = link_acquire_conf(link); |
2516 | if (r < 0) { | |
2517 | link_enter_failed(link); | |
2518 | return r; | |
2519 | } | |
2520 | } | |
2521 | ||
0d4ad91d AR |
2522 | r = link_handle_bound_by_list(link); |
2523 | if (r < 0) | |
2524 | return r; | |
2525 | ||
9c0a72f9 TG |
2526 | return 0; |
2527 | } | |
2528 | ||
2529 | static int link_carrier_lost(Link *link) { | |
2530 | int r; | |
2531 | ||
2532 | assert(link); | |
2533 | ||
2534 | r = link_stop_clients(link); | |
2535 | if (r < 0) { | |
2536 | link_enter_failed(link); | |
2537 | return r; | |
2538 | } | |
2539 | ||
0d4ad91d AR |
2540 | r = link_handle_bound_by_list(link); |
2541 | if (r < 0) | |
2542 | return r; | |
2543 | ||
9c0a72f9 TG |
2544 | return 0; |
2545 | } | |
2546 | ||
2547 | int link_carrier_reset(Link *link) { | |
2548 | int r; | |
2549 | ||
2550 | assert(link); | |
2551 | ||
2552 | if (link_has_carrier(link)) { | |
2553 | r = link_carrier_lost(link); | |
2554 | if (r < 0) | |
2555 | return r; | |
2556 | ||
2557 | r = link_carrier_gained(link); | |
2558 | if (r < 0) | |
2559 | return r; | |
2560 | ||
6a7a4e4d | 2561 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2562 | } |
2563 | ||
2564 | return 0; | |
2565 | } | |
2566 | ||
2567 | ||
1c4baffc | 2568 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 2569 | struct ether_addr mac; |
ca4e095a | 2570 | const char *ifname; |
afe7fd56 | 2571 | uint32_t mtu; |
a61bb41c | 2572 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
2573 | int r; |
2574 | ||
dd3efc09 | 2575 | assert(link); |
b8941f74 | 2576 | assert(link->ifname); |
22936833 TG |
2577 | assert(m); |
2578 | ||
7619683b TG |
2579 | if (link->state == LINK_STATE_LINGER) { |
2580 | link_ref(link); | |
6a7a4e4d | 2581 | log_link_info(link, "Link readded"); |
e331e246 | 2582 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
2583 | |
2584 | r = link_new_carrier_maps(link); | |
2585 | if (r < 0) | |
2586 | return r; | |
7619683b TG |
2587 | } |
2588 | ||
1c4baffc | 2589 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2590 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 2591 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 2592 | |
0d4ad91d AR |
2593 | link_free_carrier_maps(link); |
2594 | ||
2fc09a9c DM |
2595 | r = free_and_strdup(&link->ifname, ifname); |
2596 | if (r < 0) | |
2597 | return r; | |
0d4ad91d AR |
2598 | |
2599 | r = link_new_carrier_maps(link); | |
2600 | if (r < 0) | |
2601 | return r; | |
b8941f74 TG |
2602 | } |
2603 | ||
1c4baffc | 2604 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2605 | if (r >= 0 && mtu > 0) { |
2606 | link->mtu = mtu; | |
2607 | if (!link->original_mtu) { | |
2608 | link->original_mtu = mtu; | |
6a7a4e4d | 2609 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2610 | } |
2611 | ||
2612 | if (link->dhcp_client) { | |
3c9b8860 TG |
2613 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2614 | link->mtu); | |
afe7fd56 | 2615 | if (r < 0) { |
6a7a4e4d | 2616 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
2617 | return r; |
2618 | } | |
2619 | } | |
9842de0d | 2620 | } |
69629de9 | 2621 | |
e9189a1f TG |
2622 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2623 | set, simply ignore them. */ | |
1c4baffc | 2624 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2625 | if (r >= 0) { |
3c9b8860 TG |
2626 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2627 | ETH_ALEN)) { | |
c49b33ac | 2628 | |
3c9b8860 TG |
2629 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2630 | ETH_ALEN); | |
c49b33ac | 2631 | |
79008bdd | 2632 | log_link_debug(link, "MAC address: " |
20861203 TG |
2633 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
2634 | mac.ether_addr_octet[0], | |
2635 | mac.ether_addr_octet[1], | |
2636 | mac.ether_addr_octet[2], | |
2637 | mac.ether_addr_octet[3], | |
2638 | mac.ether_addr_octet[4], | |
2639 | mac.ether_addr_octet[5]); | |
c49b33ac | 2640 | |
20861203 TG |
2641 | if (link->ipv4ll) { |
2642 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
2643 | if (r < 0) |
2644 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 2645 | } |
c49b33ac | 2646 | |
20861203 | 2647 | if (link->dhcp_client) { |
3c9b8860 | 2648 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
2649 | (const uint8_t *) &link->mac, |
2650 | sizeof (link->mac), | |
2651 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2652 | if (r < 0) |
2653 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
c49b33ac | 2654 | } |
4138fb2c PF |
2655 | |
2656 | if (link->dhcp6_client) { | |
2657 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
2658 | (const uint8_t *) &link->mac, |
2659 | sizeof (link->mac), | |
2660 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2661 | if (r < 0) |
2662 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
4138fb2c | 2663 | } |
c49b33ac | 2664 | } |
4f882b2a TG |
2665 | } |
2666 | ||
a61bb41c TG |
2667 | had_carrier = link_has_carrier(link); |
2668 | ||
2669 | r = link_update_flags(link, m); | |
2670 | if (r < 0) | |
2671 | return r; | |
2672 | ||
2673 | carrier_gained = !had_carrier && link_has_carrier(link); | |
2674 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2675 | ||
2676 | if (carrier_gained) { | |
6a7a4e4d | 2677 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2678 | |
9c0a72f9 TG |
2679 | r = link_carrier_gained(link); |
2680 | if (r < 0) | |
2681 | return r; | |
a61bb41c | 2682 | } else if (carrier_lost) { |
6a7a4e4d | 2683 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2684 | |
9c0a72f9 TG |
2685 | r = link_carrier_lost(link); |
2686 | if (r < 0) | |
a61bb41c | 2687 | return r; |
9c0a72f9 | 2688 | |
a61bb41c TG |
2689 | } |
2690 | ||
2691 | return 0; | |
dd3efc09 | 2692 | } |
fe8db0c5 TG |
2693 | |
2694 | int link_save(Link *link) { | |
68a8723c | 2695 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2696 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2697 | const char *admin_state, *oper_state; |
e7780c8d | 2698 | Address *a; |
c1eb9872 | 2699 | Route *route; |
e7780c8d | 2700 | Iterator i; |
fe8db0c5 TG |
2701 | int r; |
2702 | ||
2703 | assert(link); | |
2704 | assert(link->state_file); | |
68a8723c | 2705 | assert(link->lease_file); |
bbf7c048 TG |
2706 | assert(link->manager); |
2707 | ||
370e9930 TG |
2708 | if (link->state == LINK_STATE_LINGER) { |
2709 | unlink(link->state_file); | |
2710 | return 0; | |
2711 | } | |
2712 | ||
deb2e523 TG |
2713 | admin_state = link_state_to_string(link->state); |
2714 | assert(admin_state); | |
2715 | ||
e375dcde TG |
2716 | oper_state = link_operstate_to_string(link->operstate); |
2717 | assert(oper_state); | |
deb2e523 | 2718 | |
fe8db0c5 TG |
2719 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2720 | if (r < 0) | |
6a7a4e4d | 2721 | goto fail; |
fe8db0c5 TG |
2722 | |
2723 | fchmod(fileno(f), 0644); | |
2724 | ||
2725 | fprintf(f, | |
2726 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2727 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
2728 | "OPER_STATE=%s\n", |
2729 | admin_state, oper_state); | |
fe8db0c5 | 2730 | |
bcb7a07e | 2731 | if (link->network) { |
ea352b40 LP |
2732 | char **address, **domain; |
2733 | bool space; | |
07bdc70d PF |
2734 | sd_dhcp6_lease *dhcp6_lease = NULL; |
2735 | ||
2736 | if (link->dhcp6_client) { | |
4058d339 TG |
2737 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, &dhcp6_lease); |
2738 | if (r < 0 && r != -ENOMSG) | |
07bdc70d PF |
2739 | log_link_debug(link, "No DHCPv6 lease"); |
2740 | } | |
b0e39c82 | 2741 | |
adc5b2e2 TG |
2742 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2743 | ||
b0e39c82 | 2744 | fputs("DNS=", f); |
ea352b40 LP |
2745 | space = false; |
2746 | STRV_FOREACH(address, link->network->dns) { | |
2747 | if (space) | |
2748 | fputc(' ', f); | |
2749 | fputs(*address, f); | |
2750 | space = true; | |
2751 | } | |
d5314fff | 2752 | |
b0e39c82 TG |
2753 | if (link->network->dhcp_dns && |
2754 | link->dhcp_lease) { | |
2755 | const struct in_addr *addresses; | |
2756 | ||
2757 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
2758 | if (r > 0) { | |
ea352b40 LP |
2759 | if (space) |
2760 | fputc(' ', f); | |
b0e39c82 | 2761 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2762 | space = true; |
2763 | } | |
2764 | } | |
2765 | ||
2766 | if (link->network->dhcp_dns && dhcp6_lease) { | |
2767 | struct in6_addr *in6_addrs; | |
2768 | ||
2769 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
2770 | if (r > 0) { | |
2771 | if (space) | |
2772 | fputc(' ', f); | |
2773 | serialize_in6_addrs(f, in6_addrs, r); | |
b0e39c82 TG |
2774 | } |
2775 | } | |
2776 | ||
2ce40956 | 2777 | fputc('\n', f); |
b0e39c82 | 2778 | |
2ce40956 | 2779 | fputs("NTP=", f); |
ea352b40 LP |
2780 | space = false; |
2781 | STRV_FOREACH(address, link->network->ntp) { | |
2782 | if (space) | |
2783 | fputc(' ', f); | |
2784 | fputs(*address, f); | |
2785 | space = true; | |
2786 | } | |
d5314fff | 2787 | |
b0e39c82 TG |
2788 | if (link->network->dhcp_ntp && |
2789 | link->dhcp_lease) { | |
2790 | const struct in_addr *addresses; | |
2791 | ||
2792 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
2793 | if (r > 0) { | |
ea352b40 LP |
2794 | if (space) |
2795 | fputc(' ', f); | |
b0e39c82 | 2796 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2797 | space = true; |
2798 | } | |
2799 | } | |
2800 | ||
2801 | if (link->network->dhcp_ntp && dhcp6_lease) { | |
2802 | struct in6_addr *in6_addrs; | |
2803 | char **hosts; | |
2804 | char **hostname; | |
2805 | ||
2806 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
2807 | &in6_addrs); | |
2808 | if (r > 0) { | |
2809 | if (space) | |
2810 | fputc(' ', f); | |
2811 | serialize_in6_addrs(f, in6_addrs, r); | |
2812 | space = true; | |
2813 | } | |
2814 | ||
2815 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
2816 | if (r > 0) { | |
2817 | STRV_FOREACH(hostname, hosts) { | |
2818 | if (space) | |
2819 | fputc(' ', f); | |
2820 | fputs(*hostname, f); | |
2821 | space = true; | |
2822 | } | |
b0e39c82 TG |
2823 | } |
2824 | } | |
2825 | ||
2ce40956 | 2826 | fputc('\n', f); |
bd8f6538 | 2827 | |
2ce40956 | 2828 | fputs("DOMAINS=", f); |
ea352b40 LP |
2829 | space = false; |
2830 | STRV_FOREACH(domain, link->network->domains) { | |
2831 | if (space) | |
2832 | fputc(' ', f); | |
2833 | fputs(*domain, f); | |
2834 | space = true; | |
2835 | } | |
d5314fff | 2836 | |
ad0734e8 | 2837 | if (link->network->dhcp_domains && |
9b4d1882 TG |
2838 | link->dhcp_lease) { |
2839 | const char *domainname; | |
2840 | ||
2841 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
6192b846 | 2842 | if (r >= 0) { |
ea352b40 LP |
2843 | if (space) |
2844 | fputc(' ', f); | |
6192b846 | 2845 | fputs(domainname, f); |
07bdc70d PF |
2846 | space = true; |
2847 | } | |
2848 | } | |
2849 | ||
2850 | if (link->network->dhcp_domains && dhcp6_lease) { | |
2851 | char **domains; | |
2852 | ||
2853 | r = sd_dhcp6_lease_get_domains(dhcp6_lease, &domains); | |
2854 | if (r >= 0) { | |
2855 | STRV_FOREACH(domain, domains) { | |
2856 | if (space) | |
2857 | fputc(' ', f); | |
2858 | fputs(*domain, f); | |
2859 | space = true; | |
2860 | } | |
6192b846 | 2861 | } |
9b4d1882 TG |
2862 | } |
2863 | ||
2ce40956 | 2864 | fputc('\n', f); |
6192b846 | 2865 | |
67272d15 TG |
2866 | fprintf(f, "WILDCARD_DOMAIN=%s\n", |
2867 | yes_no(link->network->wildcard_domain)); | |
2868 | ||
3c9b8860 | 2869 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 2870 | resolve_support_to_string(link->network->llmnr)); |
e7780c8d | 2871 | |
2ce40956 | 2872 | fputs("ADDRESSES=", f); |
e7780c8d TG |
2873 | space = false; |
2874 | SET_FOREACH(a, link->addresses, i) { | |
2875 | _cleanup_free_ char *address_str = NULL; | |
2876 | ||
2877 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
2878 | if (r < 0) | |
2879 | goto fail; | |
2880 | ||
e7780c8d TG |
2881 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
2882 | space = true; | |
2883 | } | |
2884 | ||
2ce40956 | 2885 | fputc('\n', f); |
c1eb9872 TG |
2886 | |
2887 | fputs("ROUTES=", f); | |
2888 | space = false; | |
2889 | SET_FOREACH(route, link->routes, i) { | |
2890 | _cleanup_free_ char *route_str = NULL; | |
2891 | ||
2892 | r = in_addr_to_string(route->family, &route->dst, &route_str); | |
2893 | if (r < 0) | |
2894 | goto fail; | |
2895 | ||
f833694d TG |
2896 | fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%hhu/"USEC_FMT, space ? " " : "", route_str, |
2897 | route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime); | |
c1eb9872 TG |
2898 | space = true; |
2899 | } | |
2900 | ||
2901 | fputc('\n', f); | |
bcb7a07e | 2902 | } |
7374f9d8 | 2903 | |
0d4ad91d AR |
2904 | if (!hashmap_isempty(link->bound_to_links)) { |
2905 | Link *carrier; | |
0d4ad91d AR |
2906 | bool space = false; |
2907 | ||
2908 | fputs("CARRIER_BOUND_TO=", f); | |
2909 | HASHMAP_FOREACH(carrier, link->bound_to_links, i) { | |
2910 | if (space) | |
2911 | fputc(' ', f); | |
2912 | fputs(carrier->ifname, f); | |
2913 | space = true; | |
2914 | } | |
2915 | ||
2ce40956 | 2916 | fputc('\n', f); |
0d4ad91d AR |
2917 | } |
2918 | ||
2919 | if (!hashmap_isempty(link->bound_by_links)) { | |
2920 | Link *carrier; | |
0d4ad91d AR |
2921 | bool space = false; |
2922 | ||
2923 | fputs("CARRIER_BOUND_BY=", f); | |
0d4ad91d AR |
2924 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
2925 | if (space) | |
2926 | fputc(' ', f); | |
2927 | fputs(carrier->ifname, f); | |
2928 | space = true; | |
2929 | } | |
2930 | ||
2ce40956 | 2931 | fputc('\n', f); |
0d4ad91d AR |
2932 | } |
2933 | ||
8eb9058d | 2934 | if (link->dhcp_lease) { |
0bc70f1d | 2935 | struct in_addr address; |
8eb9058d LP |
2936 | const char *tz = NULL; |
2937 | ||
0bc70f1d TG |
2938 | assert(link->network); |
2939 | ||
8eb9058d LP |
2940 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); |
2941 | if (r >= 0) | |
2942 | fprintf(f, "TIMEZONE=%s\n", tz); | |
8eb9058d | 2943 | |
0bc70f1d TG |
2944 | r = sd_dhcp_lease_get_address(link->dhcp_lease, &address); |
2945 | if (r >= 0) { | |
2946 | fputs("DHCP4_ADDRESS=", f); | |
2947 | serialize_in_addrs(f, &address, 1); | |
2948 | fputc('\n', f); | |
2949 | } | |
d9876a52 | 2950 | |
bd91b83e | 2951 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 2952 | if (r < 0) |
c2d6bd61 | 2953 | goto fail; |
fe8db0c5 | 2954 | |
7374f9d8 | 2955 | fprintf(f, |
b0e39c82 TG |
2956 | "DHCP_LEASE=%s\n", |
2957 | link->lease_file); | |
deb2e523 | 2958 | } else |
68a8723c | 2959 | unlink(link->lease_file); |
fe8db0c5 | 2960 | |
0bc70f1d TG |
2961 | if (link->ipv4ll) { |
2962 | struct in_addr address; | |
2963 | ||
2964 | r = sd_ipv4ll_get_address(link->ipv4ll, &address); | |
2965 | if (r >= 0) { | |
2966 | fputs("IPV4LL_ADDRESS=", f); | |
2967 | serialize_in_addrs(f, &address, 1); | |
2968 | fputc('\n', f); | |
2969 | } | |
2970 | } | |
2971 | ||
49699bac SS |
2972 | if (link->lldp) { |
2973 | assert(link->network); | |
2974 | ||
2975 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
2976 | if (r < 0) | |
2977 | goto fail; | |
2978 | ||
2979 | fprintf(f, | |
2980 | "LLDP_FILE=%s\n", | |
2981 | link->lldp_file); | |
2982 | } else | |
2983 | unlink(link->lldp_file); | |
2984 | ||
c2d6bd61 LP |
2985 | r = fflush_and_check(f); |
2986 | if (r < 0) | |
2987 | goto fail; | |
fe8db0c5 | 2988 | |
c2d6bd61 | 2989 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 2990 | r = -errno; |
c2d6bd61 | 2991 | goto fail; |
fe8db0c5 TG |
2992 | } |
2993 | ||
c2d6bd61 | 2994 | return 0; |
dacd6cee | 2995 | |
c2d6bd61 | 2996 | fail: |
6a7a4e4d | 2997 | (void) unlink(link->state_file); |
6a7a4e4d LP |
2998 | if (temp_path) |
2999 | (void) unlink(temp_path); | |
3000 | ||
dacd6cee | 3001 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
3002 | } |
3003 | ||
84de38c5 TG |
3004 | /* The serialized state in /run is no longer up-to-date. */ |
3005 | void link_dirty(Link *link) { | |
3006 | int r; | |
3007 | ||
3008 | assert(link); | |
3009 | ||
3010 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); | |
3011 | if (r < 0) | |
3012 | /* allocation errors are ignored */ | |
3013 | return; | |
3014 | ||
3015 | r = set_put(link->manager->dirty_links, link); | |
3016 | if (r < 0) | |
3017 | /* allocation errors are ignored */ | |
3018 | return; | |
3019 | ||
3020 | link_ref(link); | |
3021 | } | |
3022 | ||
3023 | /* The serialized state in /run is up-to-date */ | |
3024 | void link_clean(Link *link) { | |
3025 | assert(link); | |
3026 | assert(link->manager); | |
3027 | ||
3028 | set_remove(link->manager->dirty_links, link); | |
3029 | link_unref(link); | |
3030 | } | |
3031 | ||
fe8db0c5 | 3032 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 3033 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
3034 | [LINK_STATE_ENSLAVING] = "configuring", |
3035 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
3036 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
3037 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 3038 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 3039 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 3040 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
3041 | }; |
3042 | ||
3043 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
3044 | |
3045 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
3046 | [LINK_OPERSTATE_OFF] = "off", |
3047 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
3048 | [LINK_OPERSTATE_DORMANT] = "dormant", |
3049 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
3050 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
3051 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
3052 | }; | |
3053 | ||
3054 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |