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f579559b TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <netinet/ether.h> | |
23 | #include <linux/if.h> | |
4cc7a82c | 24 | #include <unistd.h> |
f579559b | 25 | |
b5efdb8a | 26 | #include "alloc-util.h" |
1346b1f0 | 27 | #include "bus-util.h" |
bd91b83e | 28 | #include "dhcp-lease-internal.h" |
f833694d | 29 | #include "event-util.h" |
3ffd4af2 | 30 | #include "fd-util.h" |
cf1d700d TG |
31 | #include "fileio.h" |
32 | #include "netlink-util.h" | |
c6f7c917 | 33 | #include "network-internal.h" |
3ffd4af2 LP |
34 | #include "networkd-link.h" |
35 | #include "networkd-netdev.h" | |
cf1d700d TG |
36 | #include "set.h" |
37 | #include "socket-util.h" | |
15a5e950 | 38 | #include "stdio-util.h" |
8b43440b | 39 | #include "string-table.h" |
cf1d700d TG |
40 | #include "udev-util.h" |
41 | #include "util.h" | |
42 | #include "virt.h" | |
fc2f9534 | 43 | |
a97dcc12 | 44 | bool link_dhcp6_enabled(Link *link) { |
78c958f8 TG |
45 | if (link->flags & IFF_LOOPBACK) |
46 | return false; | |
47 | ||
48 | if (!link->network) | |
49 | return false; | |
50 | ||
e0ee46f2 | 51 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
52 | } |
53 | ||
a97dcc12 | 54 | bool link_dhcp4_enabled(Link *link) { |
78c958f8 TG |
55 | if (link->flags & IFF_LOOPBACK) |
56 | return false; | |
57 | ||
58 | if (!link->network) | |
59 | return false; | |
60 | ||
e0ee46f2 | 61 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
62 | } |
63 | ||
a97dcc12 | 64 | bool link_dhcp4_server_enabled(Link *link) { |
78c958f8 TG |
65 | if (link->flags & IFF_LOOPBACK) |
66 | return false; | |
67 | ||
68 | if (!link->network) | |
69 | return false; | |
70 | ||
71 | return link->network->dhcp_server; | |
72 | } | |
73 | ||
a97dcc12 | 74 | bool link_ipv4ll_enabled(Link *link) { |
78c958f8 TG |
75 | if (link->flags & IFF_LOOPBACK) |
76 | return false; | |
77 | ||
78 | if (!link->network) | |
79 | return false; | |
80 | ||
e0ee46f2 | 81 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
82 | } |
83 | ||
84 | bool link_ipv6ll_enabled(Link *link) { | |
85 | if (link->flags & IFF_LOOPBACK) | |
86 | return false; | |
87 | ||
88 | if (!link->network) | |
89 | return false; | |
90 | ||
e0ee46f2 | 91 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
92 | } |
93 | ||
a97dcc12 | 94 | bool link_lldp_enabled(Link *link) { |
ce43e484 SS |
95 | if (link->flags & IFF_LOOPBACK) |
96 | return false; | |
97 | ||
98 | if (!link->network) | |
99 | return false; | |
100 | ||
5a8bcb67 | 101 | if (link->network->bridge) |
ce43e484 SS |
102 | return false; |
103 | ||
104 | return link->network->lldp; | |
105 | } | |
106 | ||
769d324c | 107 | static bool link_ipv4_forward_enabled(Link *link) { |
5a8bcb67 LP |
108 | if (link->flags & IFF_LOOPBACK) |
109 | return false; | |
110 | ||
111 | if (!link->network) | |
112 | return false; | |
113 | ||
e0ee46f2 | 114 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
115 | } |
116 | ||
117 | static bool link_ipv6_forward_enabled(Link *link) { | |
118 | if (link->flags & IFF_LOOPBACK) | |
119 | return false; | |
120 | ||
121 | if (!link->network) | |
122 | return false; | |
123 | ||
e0ee46f2 | 124 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
125 | } |
126 | ||
f5a8c43f TG |
127 | bool link_ipv6_accept_ra_enabled(Link *link) { |
128 | if (link->flags & IFF_LOOPBACK) | |
129 | return false; | |
130 | ||
131 | if (!link->network) | |
132 | return false; | |
133 | ||
134 | /* If unset use system default (enabled if local forwarding is disabled. | |
135 | * disabled if local forwarding is enabled). | |
136 | * If set, ignore or enforce RA independent of local forwarding state. | |
137 | */ | |
138 | if (link->network->ipv6_accept_ra < 0) | |
139 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ | |
140 | return !link_ipv6_forward_enabled(link); | |
141 | else if (link->network->ipv6_accept_ra > 0) | |
142 | /* accept RA even if ip_forward is enabled */ | |
143 | return true; | |
144 | else | |
145 | /* ignore RA */ | |
146 | return false; | |
147 | } | |
148 | ||
1f0d9695 | 149 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
49092e22 | 150 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 151 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
152 | |
153 | if (!link->network) | |
1f0d9695 | 154 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
155 | |
156 | return link->network->ipv6_privacy_extensions; | |
157 | } | |
158 | ||
84de38c5 TG |
159 | void link_update_operstate(Link *link) { |
160 | LinkOperationalState operstate; | |
161 | assert(link); | |
162 | ||
163 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
164 | operstate = LINK_OPERSTATE_DORMANT; | |
165 | else if (link_has_carrier(link)) { | |
166 | Address *address; | |
167 | uint8_t scope = RT_SCOPE_NOWHERE; | |
168 | Iterator i; | |
169 | ||
170 | /* if we have carrier, check what addresses we have */ | |
171 | SET_FOREACH(address, link->addresses, i) { | |
172 | if (!address_is_ready(address)) | |
173 | continue; | |
174 | ||
175 | if (address->scope < scope) | |
176 | scope = address->scope; | |
177 | } | |
178 | ||
179 | /* for operstate we also take foreign addresses into account */ | |
180 | SET_FOREACH(address, link->addresses_foreign, i) { | |
181 | if (!address_is_ready(address)) | |
182 | continue; | |
183 | ||
184 | if (address->scope < scope) | |
185 | scope = address->scope; | |
186 | } | |
187 | ||
188 | if (scope < RT_SCOPE_SITE) | |
189 | /* universally accessible addresses found */ | |
190 | operstate = LINK_OPERSTATE_ROUTABLE; | |
191 | else if (scope < RT_SCOPE_HOST) | |
192 | /* only link or site local addresses found */ | |
193 | operstate = LINK_OPERSTATE_DEGRADED; | |
194 | else | |
195 | /* no useful addresses found */ | |
196 | operstate = LINK_OPERSTATE_CARRIER; | |
197 | } else if (link->flags & IFF_UP) | |
198 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
199 | else | |
200 | operstate = LINK_OPERSTATE_OFF; | |
201 | ||
202 | if (link->operstate != operstate) { | |
203 | link->operstate = operstate; | |
204 | link_send_changed(link, "OperationalState", NULL); | |
205 | link_dirty(link); | |
206 | manager_dirty(link->manager); | |
207 | } | |
208 | } | |
209 | ||
51d18171 TG |
210 | #define FLAG_STRING(string, flag, old, new) \ |
211 | (((old ^ new) & flag) \ | |
212 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
213 | : "") | |
214 | ||
1c4baffc | 215 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
216 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
217 | uint8_t operstate; | |
218 | int r; | |
219 | ||
220 | assert(link); | |
221 | ||
222 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
223 | if (r < 0) |
224 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 225 | |
1c4baffc | 226 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
227 | if (r < 0) |
228 | /* if we got a message without operstate, take it to mean | |
229 | the state was unchanged */ | |
230 | operstate = link->kernel_operstate; | |
231 | ||
232 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
233 | return 0; | |
234 | ||
235 | if (link->flags != flags) { | |
6a7a4e4d | 236 | 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 |
237 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
238 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
239 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
240 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
241 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
242 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
243 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
244 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
245 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
246 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
247 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
248 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
249 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
250 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
251 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
252 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
253 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
254 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
255 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
256 | ||
257 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
258 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
259 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
260 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
261 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
262 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
263 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
264 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
265 | ||
266 | /* link flags are currently at most 18 bits, let's align to | |
267 | * printing 20 */ | |
268 | if (unknown_flags_added) | |
79008bdd | 269 | log_link_debug(link, |
6a7a4e4d | 270 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
271 | unknown_flags_added); |
272 | ||
273 | if (unknown_flags_removed) | |
79008bdd | 274 | log_link_debug(link, |
6a7a4e4d | 275 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
276 | unknown_flags_removed); |
277 | } | |
278 | ||
279 | link->flags = flags; | |
280 | link->kernel_operstate = operstate; | |
281 | ||
84de38c5 | 282 | link_update_operstate(link); |
51d18171 TG |
283 | |
284 | return 0; | |
285 | } | |
286 | ||
1c4baffc | 287 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 288 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 289 | uint16_t type; |
ca4e095a | 290 | const char *ifname; |
505f8da7 | 291 | int r, ifindex; |
f579559b | 292 | |
0c2f9b84 | 293 | assert(manager); |
505f8da7 | 294 | assert(message); |
f579559b TG |
295 | assert(ret); |
296 | ||
1c4baffc | 297 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
298 | if (r < 0) |
299 | return r; | |
300 | else if (type != RTM_NEWLINK) | |
301 | return -EINVAL; | |
302 | ||
303 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
304 | if (r < 0) | |
305 | return r; | |
306 | else if (ifindex <= 0) | |
307 | return -EINVAL; | |
308 | ||
1c4baffc | 309 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
310 | if (r < 0) |
311 | return r; | |
312 | ||
f579559b TG |
313 | link = new0(Link, 1); |
314 | if (!link) | |
315 | return -ENOMEM; | |
316 | ||
14b746f7 | 317 | link->n_ref = 1; |
5a3eb5a7 | 318 | link->manager = manager; |
8434fd5c | 319 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 320 | link->rtnl_extended_attrs = true; |
505f8da7 TG |
321 | link->ifindex = ifindex; |
322 | link->ifname = strdup(ifname); | |
323 | if (!link->ifname) | |
324 | return -ENOMEM; | |
f579559b | 325 | |
1c4baffc | 326 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 327 | if (r < 0) |
79008bdd | 328 | log_link_debug(link, "MAC address not found for new device, continuing without"); |
512922f8 | 329 | |
3c9b8860 TG |
330 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", |
331 | link->ifindex); | |
fe8db0c5 | 332 | if (r < 0) |
315db1a8 | 333 | return -ENOMEM; |
fe8db0c5 | 334 | |
3c9b8860 TG |
335 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", |
336 | link->ifindex); | |
68a8723c TG |
337 | if (r < 0) |
338 | return -ENOMEM; | |
339 | ||
49699bac SS |
340 | r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", |
341 | link->ifindex); | |
342 | if (r < 0) | |
343 | return -ENOMEM; | |
344 | ||
345 | ||
d5099efc | 346 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
347 | if (r < 0) |
348 | return r; | |
349 | ||
350 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
351 | if (r < 0) |
352 | return r; | |
353 | ||
51d18171 TG |
354 | r = link_update_flags(link, message); |
355 | if (r < 0) | |
356 | return r; | |
357 | ||
f579559b TG |
358 | *ret = link; |
359 | link = NULL; | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
14b746f7 | 364 | static void link_free(Link *link) { |
428fd0a7 | 365 | Address *address; |
0d4ad91d AR |
366 | Iterator i; |
367 | Link *carrier; | |
428fd0a7 | 368 | |
f579559b TG |
369 | if (!link) |
370 | return; | |
371 | ||
cf1d700d TG |
372 | while (!set_isempty(link->addresses)) |
373 | address_free(set_first(link->addresses)); | |
374 | ||
adda1ed9 TG |
375 | while (!set_isempty(link->addresses_foreign)) |
376 | address_free(set_first(link->addresses_foreign)); | |
377 | ||
4701725c HV |
378 | link->addresses = set_free(link->addresses); |
379 | ||
380 | link->addresses_foreign = set_free(link->addresses_foreign); | |
adda1ed9 | 381 | |
11bf3cce LP |
382 | while ((address = link->pool_addresses)) { |
383 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
384 | address_free(address); | |
385 | } | |
386 | ||
bfcdba8d | 387 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 388 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 389 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 390 | |
68a8723c TG |
391 | free(link->lease_file); |
392 | ||
07e10d1a TG |
393 | sd_lldp_free(link->lldp); |
394 | ||
49699bac SS |
395 | free(link->lldp_file); |
396 | ||
56cd007a | 397 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 398 | sd_dhcp6_client_unref(link->dhcp6_client); |
de1e9928 | 399 | sd_ndisc_unref(link->ndisc_router_discovery); |
4138fb2c | 400 | |
28aeb07f | 401 | if (link->manager) |
ae06ab10 | 402 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 403 | |
c166a070 | 404 | free(link->ifname); |
68a8723c | 405 | |
84de38c5 | 406 | (void)unlink(link->state_file); |
fe8db0c5 | 407 | free(link->state_file); |
c166a070 | 408 | |
b5db00e5 UTL |
409 | udev_device_unref(link->udev_device); |
410 | ||
0d4ad91d AR |
411 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
412 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
413 | hashmap_free(link->bound_to_links); | |
414 | ||
415 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
416 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
417 | hashmap_free(link->bound_by_links); | |
418 | ||
f579559b TG |
419 | free(link); |
420 | } | |
421 | ||
14b746f7 | 422 | Link *link_unref(Link *link) { |
957325b7 TG |
423 | if (!link) |
424 | return NULL; | |
425 | ||
426 | assert(link->n_ref > 0); | |
427 | ||
428 | link->n_ref --; | |
429 | ||
430 | if (link->n_ref > 0) | |
431 | return NULL; | |
432 | ||
433 | link_free(link); | |
14b746f7 TG |
434 | |
435 | return NULL; | |
436 | } | |
437 | ||
438 | Link *link_ref(Link *link) { | |
957325b7 TG |
439 | if (!link) |
440 | return NULL; | |
441 | ||
442 | assert(link->n_ref > 0); | |
443 | ||
444 | link->n_ref ++; | |
14b746f7 TG |
445 | |
446 | return link; | |
447 | } | |
448 | ||
11a7f229 TG |
449 | int link_get(Manager *m, int ifindex, Link **ret) { |
450 | Link *link; | |
11a7f229 TG |
451 | |
452 | assert(m); | |
11a7f229 TG |
453 | assert(ifindex); |
454 | assert(ret); | |
455 | ||
ae06ab10 | 456 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
457 | if (!link) |
458 | return -ENODEV; | |
459 | ||
460 | *ret = link; | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
e331e246 TG |
465 | static void link_set_state(Link *link, LinkState state) { |
466 | assert(link); | |
467 | ||
468 | if (link->state == state) | |
469 | return; | |
470 | ||
471 | link->state = state; | |
472 | ||
473 | link_send_changed(link, "AdministrativeState", NULL); | |
474 | ||
475 | return; | |
476 | } | |
477 | ||
57bd6899 TG |
478 | static void link_enter_unmanaged(Link *link) { |
479 | assert(link); | |
480 | ||
6a7a4e4d | 481 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 482 | |
e331e246 | 483 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 484 | |
84de38c5 | 485 | link_dirty(link); |
57bd6899 TG |
486 | } |
487 | ||
111bb8f9 TG |
488 | static int link_stop_clients(Link *link) { |
489 | int r = 0, k; | |
490 | ||
491 | assert(link); | |
492 | assert(link->manager); | |
493 | assert(link->manager->event); | |
494 | ||
495 | if (!link->network) | |
496 | return 0; | |
497 | ||
ba179154 | 498 | if (link->dhcp_client) { |
111bb8f9 | 499 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d LP |
500 | if (k < 0) |
501 | r = log_link_warning_errno(link, r, "Could not stop DHCPv4 client: %m"); | |
111bb8f9 TG |
502 | } |
503 | ||
ba179154 | 504 | if (link->ipv4ll) { |
111bb8f9 | 505 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d LP |
506 | if (k < 0) |
507 | r = log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m"); | |
dd43110f TG |
508 | } |
509 | ||
f5a8c43f TG |
510 | if (link->dhcp6_client) { |
511 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
512 | if (k < 0) | |
513 | r = log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); | |
514 | } | |
4138fb2c | 515 | |
f5a8c43f | 516 | if (link->ndisc_router_discovery) { |
de1e9928 | 517 | k = sd_ndisc_stop(link->ndisc_router_discovery); |
6a7a4e4d | 518 | if (k < 0) |
ceabaf0f | 519 | r = log_link_warning_errno(link, r, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
520 | } |
521 | ||
ce43e484 | 522 | if (link->lldp) { |
ce43e484 | 523 | k = sd_lldp_stop(link->lldp); |
6a7a4e4d LP |
524 | if (k < 0) |
525 | r = log_link_warning_errno(link, r, "Could not stop LLDP: %m"); | |
ce43e484 SS |
526 | } |
527 | ||
111bb8f9 TG |
528 | return r; |
529 | } | |
530 | ||
b22d8a00 | 531 | void link_enter_failed(Link *link) { |
ef1ba606 | 532 | assert(link); |
f882c247 | 533 | |
370e9930 | 534 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
535 | return; |
536 | ||
6a7a4e4d | 537 | log_link_warning(link, "Failed"); |
449f7554 | 538 | |
e331e246 | 539 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 540 | |
111bb8f9 TG |
541 | link_stop_clients(link); |
542 | ||
84de38c5 | 543 | link_dirty(link); |
f882c247 TG |
544 | } |
545 | ||
4f434938 LP |
546 | static Address* link_find_dhcp_server_address(Link *link) { |
547 | Address *address; | |
548 | ||
549 | assert(link); | |
550 | assert(link->network); | |
551 | ||
d4cdbea5 | 552 | /* The first statically configured address if there is any */ |
4f434938 LP |
553 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
554 | ||
555 | if (address->family != AF_INET) | |
556 | continue; | |
557 | ||
af93291c | 558 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
559 | continue; |
560 | ||
561 | return address; | |
562 | } | |
563 | ||
564 | /* If that didn't work, find a suitable address we got from the pool */ | |
565 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
566 | if (address->family != AF_INET) | |
567 | continue; | |
568 | ||
569 | return address; | |
570 | } | |
571 | ||
572 | return NULL; | |
573 | } | |
574 | ||
dd43110f | 575 | static int link_enter_configured(Link *link) { |
dd43110f TG |
576 | assert(link); |
577 | assert(link->network); | |
578 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
579 | ||
6a7a4e4d | 580 | log_link_info(link, "Configured"); |
dd43110f | 581 | |
e331e246 | 582 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 583 | |
84de38c5 | 584 | link_dirty(link); |
dd43110f TG |
585 | |
586 | return 0; | |
587 | } | |
588 | ||
8012cd39 TG |
589 | void link_check_ready(Link *link) { |
590 | Address *a; | |
591 | Iterator i; | |
592 | ||
3c9b8860 | 593 | assert(link); |
adda1ed9 TG |
594 | |
595 | if (!link->network) | |
596 | return; | |
3c9b8860 TG |
597 | |
598 | if (!link->static_configured) | |
599 | return; | |
600 | ||
78c958f8 | 601 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
602 | if (!link->ipv4ll_address || |
603 | !link->ipv4ll_route) | |
604 | return; | |
605 | ||
3ada37a2 PF |
606 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
607 | !link->dhcp4_configured) || | |
608 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
609 | !link->dhcp6_configured) || | |
610 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
611 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
18d29550 PF |
612 | return; |
613 | ||
8012cd39 TG |
614 | SET_FOREACH(a, link->addresses, i) |
615 | if (!address_is_ready(a)) | |
616 | return; | |
617 | ||
9fdaa992 TG |
618 | if (link->state != LINK_STATE_CONFIGURED) |
619 | link_enter_configured(link); | |
3c9b8860 TG |
620 | |
621 | return; | |
622 | } | |
623 | ||
1c4baffc | 624 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 625 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
626 | int r; |
627 | ||
3c9b8860 | 628 | assert(link->link_messages > 0); |
370e9930 TG |
629 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
630 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
631 | LINK_STATE_LINGER)); | |
f882c247 | 632 | |
3c9b8860 | 633 | link->link_messages --; |
f882c247 | 634 | |
77a008c0 | 635 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
636 | return 1; |
637 | ||
1c4baffc | 638 | r = sd_netlink_message_get_errno(m); |
c166a070 | 639 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 640 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 641 | |
3c9b8860 | 642 | if (link->link_messages == 0) { |
6a7a4e4d | 643 | log_link_debug(link, "Routes set"); |
3c9b8860 | 644 | link->static_configured = true; |
8012cd39 | 645 | link_check_ready(link); |
dd3efc09 | 646 | } |
f882c247 TG |
647 | |
648 | return 1; | |
649 | } | |
650 | ||
651 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 652 | Route *rt; |
f882c247 TG |
653 | int r; |
654 | ||
655 | assert(link); | |
656 | assert(link->network); | |
ef1ba606 | 657 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 658 | |
e331e246 | 659 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 660 | |
3d3d4255 | 661 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 662 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 663 | if (r < 0) { |
6a7a4e4d | 664 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 665 | link_enter_failed(link); |
a6cc569e TG |
666 | return r; |
667 | } | |
668 | ||
3c9b8860 | 669 | link->link_messages ++; |
8ddbeaa2 | 670 | } |
f5be5601 | 671 | |
3c9b8860 TG |
672 | if (link->link_messages == 0) { |
673 | link->static_configured = true; | |
8012cd39 | 674 | link_check_ready(link); |
431ca2ce | 675 | } else |
6a7a4e4d | 676 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
677 | |
678 | return 0; | |
679 | } | |
680 | ||
91b5f997 | 681 | int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 682 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
683 | int r; |
684 | ||
685 | assert(m); | |
686 | assert(link); | |
687 | assert(link->ifname); | |
688 | ||
5da8149f | 689 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
690 | return 1; |
691 | ||
1c4baffc | 692 | r = sd_netlink_message_get_errno(m); |
b90b025a | 693 | if (r < 0 && r != -ESRCH) |
a2fae7bb | 694 | log_link_warning_errno(link, r, "Could not drop route: %m"); |
5c1d3fc9 | 695 | |
5bdd314c | 696 | return 1; |
5c1d3fc9 UTL |
697 | } |
698 | ||
1c4baffc | 699 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 700 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
701 | int r; |
702 | ||
4958aee4 | 703 | assert(rtnl); |
f5be5601 TG |
704 | assert(m); |
705 | assert(link); | |
706 | assert(link->ifname); | |
3c9b8860 | 707 | assert(link->link_messages > 0); |
370e9930 TG |
708 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
709 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 710 | |
3c9b8860 | 711 | link->link_messages --; |
f882c247 | 712 | |
5da8149f | 713 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
714 | return 1; |
715 | ||
1c4baffc | 716 | r = sd_netlink_message_get_errno(m); |
c166a070 | 717 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 718 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 719 | else if (r >= 0) |
200a0868 | 720 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 721 | |
3c9b8860 | 722 | if (link->link_messages == 0) { |
6a7a4e4d | 723 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 724 | link_enter_set_routes(link); |
dd3efc09 | 725 | } |
f882c247 TG |
726 | |
727 | return 1; | |
728 | } | |
729 | ||
4f5f911e LP |
730 | static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
731 | _cleanup_free_ struct in_addr *addresses = NULL; | |
732 | size_t n_addresses = 0, n_allocated = 0; | |
733 | char **a; | |
734 | ||
735 | log_debug("Copying DNS server information from %s", link->ifname); | |
736 | ||
737 | if (!link->network) | |
738 | return 0; | |
739 | ||
740 | STRV_FOREACH(a, link->network->dns) { | |
741 | struct in_addr ia; | |
742 | ||
743 | /* Only look for IPv4 addresses */ | |
744 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
745 | continue; | |
746 | ||
747 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
748 | return log_oom(); | |
749 | ||
750 | addresses[n_addresses++] = ia; | |
751 | } | |
752 | ||
753 | if (link->network->dhcp_dns && | |
754 | link->dhcp_lease) { | |
755 | const struct in_addr *da = NULL; | |
756 | int n; | |
757 | ||
758 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
759 | if (n > 0) { | |
760 | ||
761 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
762 | return log_oom(); | |
763 | ||
764 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
765 | n_addresses += n; | |
766 | } | |
767 | } | |
768 | ||
769 | if (n_addresses <= 0) | |
770 | return 0; | |
771 | ||
772 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
773 | } | |
774 | ||
775 | static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { | |
776 | _cleanup_free_ struct in_addr *addresses = NULL; | |
777 | size_t n_addresses = 0, n_allocated = 0; | |
778 | char **a; | |
779 | ||
780 | if (!link->network) | |
781 | return 0; | |
782 | ||
783 | log_debug("Copying NTP server information from %s", link->ifname); | |
784 | ||
785 | STRV_FOREACH(a, link->network->ntp) { | |
786 | struct in_addr ia; | |
787 | ||
788 | /* Only look for IPv4 addresses */ | |
789 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
790 | continue; | |
791 | ||
792 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
793 | return log_oom(); | |
794 | ||
795 | addresses[n_addresses++] = ia; | |
796 | } | |
797 | ||
798 | if (link->network->dhcp_ntp && | |
799 | link->dhcp_lease) { | |
800 | const struct in_addr *da = NULL; | |
801 | int n; | |
802 | ||
803 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
804 | if (n > 0) { | |
805 | ||
806 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
807 | return log_oom(); | |
808 | ||
809 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
810 | n_addresses += n; | |
811 | } | |
812 | } | |
813 | ||
814 | if (n_addresses <= 0) | |
815 | return 0; | |
816 | ||
817 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
818 | } | |
819 | ||
f882c247 | 820 | static int link_enter_set_addresses(Link *link) { |
a6cc569e | 821 | Address *ad; |
f882c247 TG |
822 | int r; |
823 | ||
824 | assert(link); | |
825 | assert(link->network); | |
f5be5601 | 826 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 827 | |
e331e246 | 828 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 829 | |
3d3d4255 | 830 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
66669078 | 831 | r = address_configure(ad, link, &address_handler, false); |
dd3efc09 | 832 | if (r < 0) { |
5a8bcb67 | 833 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
834 | link_enter_failed(link); |
835 | return r; | |
836 | } | |
837 | ||
3c9b8860 | 838 | link->link_messages ++; |
f882c247 TG |
839 | } |
840 | ||
d4cdbea5 TG |
841 | /* now that we can figure out a default address for the dhcp server, |
842 | start it */ | |
843 | if (link_dhcp4_server_enabled(link)) { | |
d4cdbea5 | 844 | Address *address; |
4f5f911e LP |
845 | Link *uplink = NULL; |
846 | bool acquired_uplink = false; | |
d4cdbea5 TG |
847 | |
848 | address = link_find_dhcp_server_address(link); | |
849 | if (!address) { | |
6a7a4e4d | 850 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
851 | link_enter_failed(link); |
852 | return 0; | |
853 | } | |
854 | ||
61986155 | 855 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
856 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
857 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
858 | if (r < 0) |
859 | return r; | |
860 | ||
861 | /* TODO: | |
862 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
863 | &main_address->in_addr.in); | |
864 | if (r < 0) | |
865 | return r; | |
d4cdbea5 TG |
866 | */ |
867 | ||
586ac6f7 LP |
868 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
869 | r = sd_dhcp_server_set_max_lease_time( | |
870 | link->dhcp_server, | |
871 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
872 | if (r < 0) | |
873 | return r; | |
874 | } | |
875 | ||
876 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
877 | r = sd_dhcp_server_set_default_lease_time( | |
878 | link->dhcp_server, | |
879 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
880 | if (r < 0) | |
881 | return r; | |
882 | } | |
883 | ||
1a04db0f LP |
884 | if (link->network->dhcp_server_emit_dns) { |
885 | ||
4f5f911e | 886 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 887 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
888 | else { |
889 | uplink = manager_find_uplink(link->manager, link); | |
890 | acquired_uplink = true; | |
891 | ||
892 | if (!uplink) { | |
893 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
894 | r = 0; | |
895 | } else | |
896 | r = link_push_dns_to_dhcp_server(uplink, link->dhcp_server); | |
897 | } | |
898 | if (r < 0) | |
899 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
900 | } |
901 | ||
902 | ||
903 | if (link->network->dhcp_server_emit_ntp) { | |
904 | ||
4f5f911e | 905 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 906 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
907 | else { |
908 | if (!acquired_uplink) | |
909 | uplink = manager_find_uplink(link->manager, link); | |
910 | ||
911 | if (!uplink) { | |
912 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
913 | r = 0; | |
914 | } else | |
915 | r = link_push_ntp_to_dhcp_server(uplink, link->dhcp_server); | |
916 | ||
917 | } | |
918 | if (r < 0) | |
919 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
920 | } |
921 | ||
8eb9058d LP |
922 | if (link->network->dhcp_server_emit_timezone) { |
923 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 924 | const char *tz = NULL; |
8eb9058d LP |
925 | |
926 | if (link->network->dhcp_server_timezone) | |
927 | tz = link->network->dhcp_server_timezone; | |
928 | else { | |
929 | r = get_timezone(&buffer); | |
930 | if (r < 0) | |
931 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
932 | else | |
933 | tz = buffer; | |
934 | } | |
935 | ||
936 | if (tz) { | |
937 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
938 | if (r < 0) | |
939 | return r; | |
940 | } | |
941 | } | |
942 | ||
d4cdbea5 TG |
943 | r = sd_dhcp_server_start(link->dhcp_server); |
944 | if (r < 0) { | |
6a7a4e4d | 945 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
946 | |
947 | link_enter_failed(link); | |
948 | ||
949 | return 0; | |
950 | } | |
951 | ||
6a7a4e4d | 952 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
953 | } |
954 | ||
6a7a4e4d | 955 | if (link->link_messages == 0) |
431ca2ce | 956 | link_enter_set_routes(link); |
6a7a4e4d LP |
957 | else |
958 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 959 | |
f882c247 TG |
960 | return 0; |
961 | } | |
962 | ||
91b5f997 | 963 | int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 964 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
965 | int r; |
966 | ||
967 | assert(m); | |
968 | assert(link); | |
969 | assert(link->ifname); | |
970 | ||
5da8149f | 971 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
972 | return 1; |
973 | ||
1c4baffc | 974 | r = sd_netlink_message_get_errno(m); |
b90b025a | 975 | if (r < 0 && r != -EADDRNOTAVAIL) |
a2fae7bb | 976 | log_link_warning_errno(link, r, "Could not drop address: %m"); |
ff254138 | 977 | |
5bdd314c | 978 | return 1; |
ff254138 TG |
979 | } |
980 | ||
a245ced0 | 981 | static int link_set_bridge_fdb(Link *const link) { |
b98b483b AR |
982 | FdbEntry *fdb_entry; |
983 | int r = 0; | |
984 | ||
985 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
ea6ec096 | 986 | r = fdb_entry_configure(link, fdb_entry); |
b98b483b | 987 | if(r < 0) { |
6a7a4e4d | 988 | log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
b98b483b AR |
989 | break; |
990 | } | |
991 | } | |
992 | ||
993 | return r; | |
994 | } | |
995 | ||
1c4baffc | 996 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
997 | _cleanup_link_unref_ Link *link = userdata; |
998 | int r; | |
999 | ||
6a7a4e4d | 1000 | log_link_debug(link, "Set link"); |
e1853b00 | 1001 | |
1c4baffc | 1002 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 1003 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 1004 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
1005 | link_enter_failed(link); |
1006 | return 1; | |
1007 | } | |
1008 | ||
1009 | return 0; | |
1010 | } | |
1011 | ||
19070062 | 1012 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
5da8149f | 1013 | _cleanup_link_unref_ Link *link = userdata; |
21b80ad1 | 1014 | const sd_bus_error *e; |
1346b1f0 | 1015 | |
19070062 | 1016 | assert(m); |
b226d99b TG |
1017 | assert(link); |
1018 | ||
5da8149f | 1019 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 1020 | return 1; |
370e9930 | 1021 | |
21b80ad1 LP |
1022 | e = sd_bus_message_get_error(m); |
1023 | if (e) | |
1024 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); | |
1346b1f0 TG |
1025 | |
1026 | return 1; | |
1027 | } | |
1028 | ||
3c9b8860 | 1029 | int link_set_hostname(Link *link, const char *hostname) { |
21b80ad1 | 1030 | int r; |
1346b1f0 | 1031 | |
b226d99b TG |
1032 | assert(link); |
1033 | assert(link->manager); | |
1346b1f0 | 1034 | |
dce391e7 | 1035 | log_link_debug(link, "Setting transient hostname: '%s'", strna(hostname)); |
1346b1f0 | 1036 | |
3c9b8860 TG |
1037 | if (!link->manager->bus) { |
1038 | /* TODO: replace by assert when we can rely on kdbus */ | |
6a7a4e4d | 1039 | log_link_info(link, "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
1040 | return 0; |
1041 | } | |
1042 | ||
9c34154a | 1043 | r = sd_bus_call_method_async( |
b226d99b | 1044 | link->manager->bus, |
9c34154a | 1045 | NULL, |
1346b1f0 TG |
1046 | "org.freedesktop.hostname1", |
1047 | "/org/freedesktop/hostname1", | |
1048 | "org.freedesktop.hostname1", | |
9c34154a UTL |
1049 | "SetHostname", |
1050 | set_hostname_handler, | |
1051 | link, | |
1052 | "sb", | |
1053 | hostname, | |
1054 | false); | |
1346b1f0 | 1055 | |
6a7a4e4d LP |
1056 | if (r < 0) |
1057 | return log_link_error_errno(link, r, "Could not set transient hostname: %m"); | |
b226d99b TG |
1058 | |
1059 | link_ref(link); | |
1346b1f0 | 1060 | |
5da8149f | 1061 | return 0; |
1346b1f0 TG |
1062 | } |
1063 | ||
21b80ad1 LP |
1064 | static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
1065 | _cleanup_link_unref_ Link *link = userdata; | |
1066 | const sd_bus_error *e; | |
1067 | ||
1068 | assert(m); | |
1069 | assert(link); | |
1070 | ||
1071 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1072 | return 1; | |
1073 | ||
1074 | e = sd_bus_message_get_error(m); | |
1075 | if (e) | |
1076 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); | |
1077 | ||
1078 | return 1; | |
1079 | } | |
1080 | ||
64d6c229 | 1081 | int link_set_timezone(Link *link, const char *tz) { |
21b80ad1 LP |
1082 | int r; |
1083 | ||
1084 | assert(link); | |
1085 | assert(link->manager); | |
64d6c229 | 1086 | assert(tz); |
21b80ad1 | 1087 | |
64d6c229 | 1088 | log_link_debug(link, "Setting system timezone: '%s'", tz); |
21b80ad1 LP |
1089 | |
1090 | if (!link->manager->bus) { | |
1091 | log_link_info(link, "Not connected to system bus, ignoring timezone."); | |
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | r = sd_bus_call_method_async( | |
1096 | link->manager->bus, | |
1097 | NULL, | |
1098 | "org.freedesktop.timedate1", | |
1099 | "/org/freedesktop/timedate1", | |
1100 | "org.freedesktop.timedate1", | |
1101 | "SetTimezone", | |
1102 | set_timezone_handler, | |
1103 | link, | |
1104 | "sb", | |
64d6c229 | 1105 | tz, |
21b80ad1 LP |
1106 | false); |
1107 | if (r < 0) | |
1108 | return log_link_error_errno(link, r, "Could not set timezone: %m"); | |
1109 | ||
1110 | link_ref(link); | |
1111 | ||
1112 | return 0; | |
1113 | } | |
1114 | ||
1c4baffc | 1115 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1116 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
1117 | int r; |
1118 | ||
1119 | assert(m); | |
1120 | assert(link); | |
1121 | assert(link->ifname); | |
1122 | ||
5da8149f | 1123 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1124 | return 1; |
1125 | ||
1c4baffc | 1126 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 1127 | if (r < 0) |
a2fae7bb | 1128 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
4f882b2a TG |
1129 | |
1130 | return 1; | |
1131 | } | |
1132 | ||
3c9b8860 | 1133 | int link_set_mtu(Link *link, uint32_t mtu) { |
1c4baffc | 1134 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f882b2a TG |
1135 | int r; |
1136 | ||
1137 | assert(link); | |
1138 | assert(link->manager); | |
1139 | assert(link->manager->rtnl); | |
1140 | ||
6a7a4e4d | 1141 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1142 | |
6a7a4e4d LP |
1143 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1144 | if (r < 0) | |
1145 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1146 | |
1c4baffc | 1147 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1148 | if (r < 0) |
1149 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1150 | |
1c4baffc | 1151 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
1152 | if (r < 0) |
1153 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1154 | |
ae941762 | 1155 | link_ref(link); |
b226d99b | 1156 | |
4f882b2a TG |
1157 | return 0; |
1158 | } | |
1159 | ||
e1853b00 | 1160 | static int link_set_bridge(Link *link) { |
1c4baffc | 1161 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
e1853b00 SS |
1162 | int r; |
1163 | ||
1164 | assert(link); | |
1165 | assert(link->network); | |
1166 | ||
6a7a4e4d LP |
1167 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1168 | if (r < 0) | |
1169 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1170 | |
1171 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1172 | if (r < 0) |
1173 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1174 | |
1c4baffc | 1175 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1176 | if (r < 0) |
1177 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1178 | |
84c34096 | 1179 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, !link->network->use_bpdu); |
eb7ff4dd SS |
1180 | if (r < 0) |
1181 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1182 | ||
1183 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1184 | if (r < 0) | |
1185 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1186 | ||
1187 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1188 | if (r < 0) | |
1189 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1190 | ||
23da66bb | 1191 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, !link->network->allow_port_to_be_root); |
eb7ff4dd SS |
1192 | if (r < 0) |
1193 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
1194 | ||
1195 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1196 | if (r < 0) | |
1197 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
1198 | ||
e1853b00 | 1199 | if(link->network->cost != 0) { |
1c4baffc | 1200 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1201 | if (r < 0) |
1202 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 SS |
1203 | } |
1204 | ||
1c4baffc | 1205 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1206 | if (r < 0) |
1207 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1208 | |
1c4baffc | 1209 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
1210 | if (r < 0) |
1211 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1212 | |
1213 | link_ref(link); | |
1214 | ||
1215 | return r; | |
1216 | } | |
1217 | ||
49699bac SS |
1218 | static void lldp_handler(sd_lldp *lldp, int event, void *userdata) { |
1219 | Link *link = userdata; | |
1220 | int r; | |
1221 | ||
1222 | assert(link); | |
1223 | assert(link->network); | |
1224 | assert(link->manager); | |
1225 | ||
9ef61f2e DH |
1226 | switch (event) { |
1227 | case SD_LLDP_EVENT_UPDATE_INFO: | |
1228 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
1229 | if (r < 0) | |
1230 | log_link_warning_errno(link, r, "Could not save LLDP: %m"); | |
49699bac | 1231 | |
9ef61f2e DH |
1232 | break; |
1233 | default: | |
1234 | break; | |
1235 | } | |
49699bac SS |
1236 | } |
1237 | ||
ff254138 TG |
1238 | static int link_acquire_conf(Link *link) { |
1239 | int r; | |
1240 | ||
1241 | assert(link); | |
1242 | assert(link->network); | |
ff254138 TG |
1243 | assert(link->manager); |
1244 | assert(link->manager->event); | |
1245 | ||
78c958f8 | 1246 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1247 | assert(link->ipv4ll); |
ff254138 | 1248 | |
6a7a4e4d | 1249 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1250 | |
1251 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1252 | if (r < 0) |
1253 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1254 | } |
1255 | ||
78c958f8 | 1256 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1257 | assert(link->dhcp_client); |
ff254138 | 1258 | |
6a7a4e4d | 1259 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1260 | |
5c1d3fc9 | 1261 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1262 | if (r < 0) |
1263 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1264 | } |
ff254138 | 1265 | |
78c958f8 | 1266 | if (link_dhcp6_enabled(link)) { |
f5a8c43f TG |
1267 | assert(link->dhcp6_client); |
1268 | ||
1269 | log_link_debug(link, "Acquiring DHCPv6 lease"); | |
1270 | ||
1271 | r = sd_dhcp6_client_start(link->dhcp6_client); | |
1272 | if (r < 0) | |
1273 | return log_link_warning_errno(link, r, "Could not acquire DHCPv6 lease: %m"); | |
1274 | } | |
1275 | ||
1276 | if (link_ipv6_accept_ra_enabled(link)) { | |
de1e9928 | 1277 | assert(link->ndisc_router_discovery); |
4138fb2c | 1278 | |
6a7a4e4d | 1279 | log_link_debug(link, "Discovering IPv6 routers"); |
4138fb2c | 1280 | |
de1e9928 | 1281 | r = sd_ndisc_router_discovery_start(link->ndisc_router_discovery); |
6a7a4e4d | 1282 | if (r < 0) |
ceabaf0f | 1283 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
4138fb2c PF |
1284 | } |
1285 | ||
ce43e484 SS |
1286 | if (link_lldp_enabled(link)) { |
1287 | assert(link->lldp); | |
1288 | ||
1289 | log_link_debug(link, "Starting LLDP"); | |
1290 | ||
1291 | r = sd_lldp_start(link->lldp); | |
6a7a4e4d LP |
1292 | if (r < 0) |
1293 | return log_link_warning_errno(link, r, "Could not start LLDP: %m"); | |
ce43e484 SS |
1294 | } |
1295 | ||
ff254138 TG |
1296 | return 0; |
1297 | } | |
1298 | ||
a61bb41c | 1299 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1300 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1301 | ||
a61bb41c | 1302 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1303 | return true; |
1304 | ||
a61bb41c | 1305 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1306 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1307 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1308 | return true; |
1309 | ||
1310 | return false; | |
1311 | } | |
1312 | ||
1c4baffc | 1313 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1314 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1315 | int r; |
1316 | ||
1746cf2a TG |
1317 | assert(link); |
1318 | ||
5da8149f | 1319 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1320 | return 1; |
1321 | ||
1c4baffc | 1322 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
1323 | if (r < 0) |
1324 | /* we warn but don't fail the link, as it may be | |
1325 | brought up later */ | |
a2fae7bb | 1326 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1327 | |
f882c247 TG |
1328 | return 1; |
1329 | } | |
1330 | ||
1331 | static int link_up(Link *link) { | |
1c4baffc | 1332 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
5c3072ea | 1333 | uint8_t ipv6ll_mode; |
f579559b TG |
1334 | int r; |
1335 | ||
f882c247 | 1336 | assert(link); |
c106cc36 | 1337 | assert(link->network); |
f882c247 TG |
1338 | assert(link->manager); |
1339 | assert(link->manager->rtnl); | |
1340 | ||
6a7a4e4d | 1341 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1342 | |
6a7a4e4d LP |
1343 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1344 | if (r < 0) | |
1345 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1346 | |
5d4795f3 | 1347 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1348 | if (r < 0) |
1349 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1350 | |
c106cc36 | 1351 | if (link->network->mac) { |
1c4baffc | 1352 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1353 | if (r < 0) |
1354 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1355 | } |
1356 | ||
1357 | if (link->network->mtu) { | |
1c4baffc | 1358 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1359 | if (r < 0) |
1360 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1361 | } |
1362 | ||
1c4baffc | 1363 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1364 | if (r < 0) |
1365 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1366 | |
01d28f81 TG |
1367 | if (socket_ipv6_is_supported()) { |
1368 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ | |
1c4baffc | 1369 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1370 | if (r < 0) |
1371 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1372 | |
01d28f81 | 1373 | ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE; |
1c4baffc | 1374 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1375 | if (r < 0) |
1376 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1377 | |
01d28f81 | 1378 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1379 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1380 | if (r < 0) |
1381 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1382 | } | |
1383 | ||
1c4baffc | 1384 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1385 | if (r < 0) |
01d28f81 | 1386 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1387 | } |
d0d6a4cd | 1388 | |
1c4baffc | 1389 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1390 | if (r < 0) |
1391 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1392 | |
1c4baffc | 1393 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1394 | if (r < 0) |
1395 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1396 | |
b226d99b TG |
1397 | link_ref(link); |
1398 | ||
f882c247 TG |
1399 | return 0; |
1400 | } | |
1401 | ||
1c4baffc | 1402 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1403 | _cleanup_link_unref_ Link *link = userdata; |
1404 | int r; | |
1405 | ||
1406 | assert(link); | |
1407 | ||
1408 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1409 | return 1; | |
1410 | ||
1c4baffc | 1411 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1412 | if (r < 0) |
a2fae7bb | 1413 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d AR |
1414 | |
1415 | return 1; | |
1416 | } | |
1417 | ||
1418 | static int link_down(Link *link) { | |
1c4baffc | 1419 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
0d4ad91d AR |
1420 | int r; |
1421 | ||
1422 | assert(link); | |
1423 | assert(link->manager); | |
1424 | assert(link->manager->rtnl); | |
1425 | ||
6a7a4e4d | 1426 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1427 | |
1428 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1429 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1430 | if (r < 0) |
1431 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1432 | |
1433 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1434 | if (r < 0) |
1435 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1436 | |
1c4baffc | 1437 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1438 | if (r < 0) |
1439 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1440 | |
1441 | link_ref(link); | |
1442 | ||
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | static int link_handle_bound_to_list(Link *link) { | |
1447 | Link *l; | |
1448 | Iterator i; | |
1449 | int r; | |
1450 | bool required_up = false; | |
1451 | bool link_is_up = false; | |
1452 | ||
1453 | assert(link); | |
1454 | ||
1455 | if (hashmap_isempty(link->bound_to_links)) | |
1456 | return 0; | |
1457 | ||
1458 | if (link->flags & IFF_UP) | |
1459 | link_is_up = true; | |
1460 | ||
1461 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1462 | if (link_has_carrier(l)) { | |
1463 | required_up = true; | |
1464 | break; | |
1465 | } | |
1466 | ||
1467 | if (!required_up && link_is_up) { | |
1468 | r = link_down(link); | |
1469 | if (r < 0) | |
1470 | return r; | |
1471 | } else if (required_up && !link_is_up) { | |
1472 | r = link_up(link); | |
1473 | if (r < 0) | |
1474 | return r; | |
1475 | } | |
1476 | ||
1477 | return 0; | |
1478 | } | |
1479 | ||
1480 | static int link_handle_bound_by_list(Link *link) { | |
1481 | Iterator i; | |
1482 | Link *l; | |
1483 | int r; | |
1484 | ||
1485 | assert(link); | |
1486 | ||
1487 | if (hashmap_isempty(link->bound_by_links)) | |
1488 | return 0; | |
1489 | ||
1490 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1491 | r = link_handle_bound_to_list(l); | |
1492 | if (r < 0) | |
1493 | return r; | |
1494 | } | |
1495 | ||
1496 | return 0; | |
1497 | } | |
1498 | ||
1499 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1500 | int r; | |
1501 | ||
1502 | assert(link); | |
1503 | assert(carrier); | |
1504 | ||
1505 | if (link == carrier) | |
1506 | return 0; | |
1507 | ||
1508 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1509 | return 0; | |
1510 | ||
1511 | r = hashmap_ensure_allocated(h, NULL); | |
1512 | if (r < 0) | |
1513 | return r; | |
1514 | ||
1515 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1516 | if (r < 0) | |
1517 | return r; | |
1518 | ||
1519 | return 0; | |
1520 | } | |
1521 | ||
1522 | static int link_new_bound_by_list(Link *link) { | |
1523 | Manager *m; | |
1524 | Link *carrier; | |
1525 | Iterator i; | |
1526 | int r; | |
1527 | bool list_updated = false; | |
1528 | ||
1529 | assert(link); | |
1530 | assert(link->manager); | |
1531 | ||
1532 | m = link->manager; | |
1533 | ||
1534 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1535 | if (!carrier->network) | |
1536 | continue; | |
1537 | ||
1538 | if (strv_isempty(carrier->network->bind_carrier)) | |
1539 | continue; | |
1540 | ||
1541 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1542 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1543 | if (r < 0) | |
1544 | return r; | |
1545 | ||
1546 | list_updated = true; | |
1547 | } | |
1548 | } | |
1549 | ||
1550 | if (list_updated) | |
84de38c5 | 1551 | link_dirty(link); |
0d4ad91d AR |
1552 | |
1553 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) { | |
1554 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); | |
1555 | if (r < 0) | |
1556 | return r; | |
1557 | ||
84de38c5 | 1558 | link_dirty(carrier); |
0d4ad91d AR |
1559 | } |
1560 | ||
1561 | return 0; | |
1562 | } | |
1563 | ||
1564 | static int link_new_bound_to_list(Link *link) { | |
1565 | Manager *m; | |
1566 | Link *carrier; | |
1567 | Iterator i; | |
1568 | int r; | |
1569 | bool list_updated = false; | |
1570 | ||
1571 | assert(link); | |
1572 | assert(link->manager); | |
1573 | ||
1574 | if (!link->network) | |
1575 | return 0; | |
1576 | ||
1577 | if (strv_isempty(link->network->bind_carrier)) | |
1578 | return 0; | |
1579 | ||
1580 | m = link->manager; | |
1581 | ||
1582 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1583 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1584 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1585 | if (r < 0) | |
1586 | return r; | |
1587 | ||
1588 | list_updated = true; | |
1589 | } | |
1590 | } | |
1591 | ||
1592 | if (list_updated) | |
84de38c5 | 1593 | link_dirty(link); |
0d4ad91d AR |
1594 | |
1595 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1596 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1597 | if (r < 0) | |
1598 | return r; | |
1599 | ||
84de38c5 | 1600 | link_dirty(carrier); |
0d4ad91d AR |
1601 | } |
1602 | ||
1603 | return 0; | |
1604 | } | |
1605 | ||
1606 | static int link_new_carrier_maps(Link *link) { | |
1607 | int r; | |
1608 | ||
1609 | r = link_new_bound_by_list(link); | |
1610 | if (r < 0) | |
1611 | return r; | |
1612 | ||
1613 | r = link_handle_bound_by_list(link); | |
1614 | if (r < 0) | |
1615 | return r; | |
1616 | ||
1617 | r = link_new_bound_to_list(link); | |
1618 | if (r < 0) | |
1619 | return r; | |
1620 | ||
1621 | r = link_handle_bound_to_list(link); | |
1622 | if (r < 0) | |
1623 | return r; | |
1624 | ||
1625 | return 0; | |
1626 | } | |
1627 | ||
1628 | static void link_free_bound_to_list(Link *link) { | |
1629 | Link *bound_to; | |
1630 | Iterator i; | |
1631 | ||
1632 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
1633 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
1634 | ||
1635 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1636 | link_dirty(bound_to); |
0d4ad91d AR |
1637 | } |
1638 | ||
1639 | return; | |
1640 | } | |
1641 | ||
1642 | static void link_free_bound_by_list(Link *link) { | |
1643 | Link *bound_by; | |
1644 | Iterator i; | |
1645 | ||
1646 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
1647 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
1648 | ||
1649 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1650 | link_dirty(bound_by); |
0d4ad91d AR |
1651 | link_handle_bound_to_list(bound_by); |
1652 | } | |
1653 | } | |
1654 | ||
1655 | return; | |
1656 | } | |
1657 | ||
1658 | static void link_free_carrier_maps(Link *link) { | |
1659 | bool list_updated = false; | |
1660 | ||
1661 | assert(link); | |
1662 | ||
1663 | if (!hashmap_isempty(link->bound_to_links)) { | |
1664 | link_free_bound_to_list(link); | |
1665 | list_updated = true; | |
1666 | } | |
1667 | ||
1668 | if (!hashmap_isempty(link->bound_by_links)) { | |
1669 | link_free_bound_by_list(link); | |
1670 | list_updated = true; | |
1671 | } | |
1672 | ||
1673 | if (list_updated) | |
84de38c5 | 1674 | link_dirty(link); |
0d4ad91d AR |
1675 | |
1676 | return; | |
1677 | } | |
1678 | ||
1679 | void link_drop(Link *link) { | |
1680 | if (!link || link->state == LINK_STATE_LINGER) | |
1681 | return; | |
1682 | ||
1683 | link_set_state(link, LINK_STATE_LINGER); | |
1684 | ||
1685 | link_free_carrier_maps(link); | |
1686 | ||
6a7a4e4d | 1687 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1688 | |
84de38c5 | 1689 | (void)unlink(link->state_file); |
0d4ad91d AR |
1690 | link_unref(link); |
1691 | ||
1692 | return; | |
1693 | } | |
1694 | ||
3f265037 | 1695 | static int link_joined(Link *link) { |
f882c247 TG |
1696 | int r; |
1697 | ||
ef1ba606 | 1698 | assert(link); |
f5be5601 | 1699 | assert(link->network); |
dd3efc09 | 1700 | |
0d4ad91d AR |
1701 | if (!hashmap_isempty(link->bound_to_links)) { |
1702 | r = link_handle_bound_to_list(link); | |
1703 | if (r < 0) | |
1704 | return r; | |
1705 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1706 | r = link_up(link); |
1707 | if (r < 0) { | |
1708 | link_enter_failed(link); | |
1709 | return r; | |
1710 | } | |
ef1ba606 | 1711 | } |
f882c247 | 1712 | |
e1853b00 SS |
1713 | if(link->network->bridge) { |
1714 | r = link_set_bridge(link); | |
6a7a4e4d LP |
1715 | if (r < 0) |
1716 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
1717 | } |
1718 | ||
fb6730c4 | 1719 | return link_enter_set_addresses(link); |
02b59d57 TG |
1720 | } |
1721 | ||
62e2d5bb | 1722 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1723 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1724 | int r; |
1725 | ||
1746cf2a | 1726 | assert(link); |
ef1ba606 | 1727 | assert(link->network); |
02b59d57 | 1728 | |
52433f6b TG |
1729 | link->enslaving --; |
1730 | ||
5da8149f | 1731 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1732 | return 1; |
1733 | ||
1c4baffc | 1734 | r = sd_netlink_message_get_errno(m); |
856f962c | 1735 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 1736 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
1737 | link_enter_failed(link); |
1738 | return 1; | |
ba179154 | 1739 | } else |
6a7a4e4d | 1740 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 1741 | |
856f962c | 1742 | if (link->enslaving <= 0) |
3f265037 | 1743 | link_joined(link); |
02b59d57 TG |
1744 | |
1745 | return 1; | |
1746 | } | |
1747 | ||
3f265037 | 1748 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1749 | NetDev *netdev; |
672682a6 | 1750 | Iterator i; |
02b59d57 TG |
1751 | int r; |
1752 | ||
1753 | assert(link); | |
1754 | assert(link->network); | |
8434fd5c | 1755 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1756 | |
e331e246 | 1757 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 1758 | |
84de38c5 | 1759 | link_dirty(link); |
fe8db0c5 | 1760 | |
7951dea2 SS |
1761 | if (!link->network->bridge && |
1762 | !link->network->bond && | |
6a0a2f86 | 1763 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1764 | return link_joined(link); |
02b59d57 | 1765 | |
d9c67ea1 | 1766 | if (link->network->bond) { |
f2341e0a LP |
1767 | log_struct(LOG_DEBUG, |
1768 | LOG_LINK_INTERFACE(link), | |
1769 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1770 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
1771 | NULL); | |
1772 | ||
1773 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 1774 | if (r < 0) { |
f2341e0a LP |
1775 | log_struct_errno(LOG_WARNING, r, |
1776 | LOG_LINK_INTERFACE(link), | |
1777 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1778 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
1779 | NULL); | |
1780 | ||
52433f6b TG |
1781 | link_enter_failed(link); |
1782 | return r; | |
1783 | } | |
1784 | ||
0ad6148e MO |
1785 | link->enslaving ++; |
1786 | } | |
1787 | ||
d9c67ea1 | 1788 | if (link->network->bridge) { |
f2341e0a LP |
1789 | log_struct(LOG_DEBUG, |
1790 | LOG_LINK_INTERFACE(link), | |
1791 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1792 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
1793 | NULL); | |
1794 | ||
1795 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 1796 | if (r < 0) { |
f2341e0a LP |
1797 | log_struct_errno(LOG_WARNING, r, |
1798 | LOG_LINK_INTERFACE(link), | |
1799 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1800 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
1801 | NULL), | |
0ad6148e MO |
1802 | link_enter_failed(link); |
1803 | return r; | |
1804 | } | |
1805 | ||
52433f6b TG |
1806 | link->enslaving ++; |
1807 | } | |
1808 | ||
6a0a2f86 | 1809 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 1810 | |
f2341e0a LP |
1811 | log_struct(LOG_DEBUG, |
1812 | LOG_LINK_INTERFACE(link), | |
1813 | LOG_NETDEV_INTERFACE(netdev), | |
1814 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
1815 | NULL); | |
1816 | ||
1817 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 1818 | if (r < 0) { |
f2341e0a LP |
1819 | log_struct_errno(LOG_WARNING, r, |
1820 | LOG_LINK_INTERFACE(link), | |
1821 | LOG_NETDEV_INTERFACE(netdev), | |
1822 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
1823 | NULL); | |
326cb406 SS |
1824 | link_enter_failed(link); |
1825 | return r; | |
1826 | } | |
1827 | ||
326cb406 SS |
1828 | link->enslaving ++; |
1829 | } | |
1830 | ||
ef1ba606 TG |
1831 | return 0; |
1832 | } | |
1833 | ||
769d324c | 1834 | static int link_set_ipv4_forward(Link *link) { |
15dee3f0 | 1835 | const char *p = NULL, *v; |
5a8bcb67 LP |
1836 | int r; |
1837 | ||
15dee3f0 LP |
1838 | if (link->flags & IFF_LOOPBACK) |
1839 | return 0; | |
1840 | ||
8add5f79 NO |
1841 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1842 | return 0; | |
1843 | ||
63c372cb | 1844 | p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1845 | v = one_zero(link_ipv4_forward_enabled(link)); |
1846 | ||
4c1fc3e4 | 1847 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1848 | if (r < 0) { |
1849 | /* If the right value is set anyway, don't complain */ | |
1850 | if (verify_one_line_file(p, v) > 0) | |
1851 | return 0; | |
1852 | ||
43c6d5ab | 1853 | log_link_warning_errno(link, r, "Cannot configure IPv4 forwarding for interface %s: %m", link->ifname); |
15dee3f0 | 1854 | } |
43c6d5ab | 1855 | |
769d324c LP |
1856 | return 0; |
1857 | } | |
1858 | ||
1859 | static int link_set_ipv6_forward(Link *link) { | |
15dee3f0 | 1860 | const char *p = NULL, *v = NULL; |
769d324c LP |
1861 | int r; |
1862 | ||
fe027299 LP |
1863 | /* Make this a NOP if IPv6 is not available */ |
1864 | if (!socket_ipv6_is_supported()) | |
1865 | return 0; | |
1866 | ||
15dee3f0 LP |
1867 | if (link->flags & IFF_LOOPBACK) |
1868 | return 0; | |
1869 | ||
8add5f79 NO |
1870 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1871 | return 0; | |
1872 | ||
63c372cb | 1873 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1874 | v = one_zero(link_ipv6_forward_enabled(link)); |
1875 | ||
4c1fc3e4 | 1876 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1877 | if (r < 0) { |
1878 | /* If the right value is set anyway, don't complain */ | |
1879 | if (verify_one_line_file(p, v) > 0) | |
1880 | return 0; | |
1881 | ||
769d324c | 1882 | log_link_warning_errno(link, r, "Cannot configure IPv6 forwarding for interface: %m"); |
15dee3f0 | 1883 | } |
5a8bcb67 LP |
1884 | |
1885 | return 0; | |
1886 | } | |
1887 | ||
49092e22 | 1888 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 LP |
1889 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; |
1890 | IPv6PrivacyExtensions s; | |
49092e22 SS |
1891 | const char *p = NULL; |
1892 | int r; | |
1893 | ||
1894 | /* Make this a NOP if IPv6 is not available */ | |
1895 | if (!socket_ipv6_is_supported()) | |
1896 | return 0; | |
1897 | ||
1f0d9695 LP |
1898 | s = link_ipv6_privacy_extensions(link); |
1899 | if (s == _IPV6_PRIVACY_EXTENSIONS_INVALID) | |
49092e22 SS |
1900 | return 0; |
1901 | ||
1902 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
1903 | xsprintf(buf, "%u", link->network->ipv6_privacy_extensions); | |
1904 | ||
4c1fc3e4 | 1905 | r = write_string_file(p, buf, 0); |
1f0d9695 LP |
1906 | if (r < 0) { |
1907 | /* If the right value is set anyway, don't complain */ | |
1908 | if (verify_one_line_file(p, buf) > 0) | |
1909 | return 0; | |
1910 | ||
49092e22 | 1911 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
1f0d9695 | 1912 | } |
49092e22 SS |
1913 | |
1914 | return 0; | |
1915 | } | |
1916 | ||
4f2e437a SS |
1917 | static int link_set_ipv6_accept_ra(Link *link) { |
1918 | const char *p = NULL, *v = NULL; | |
4f2e437a SS |
1919 | int r; |
1920 | ||
1921 | /* Make this a NOP if IPv6 is not available */ | |
1922 | if (!socket_ipv6_is_supported()) | |
1923 | return 0; | |
1924 | ||
1925 | if (link->flags & IFF_LOOPBACK) | |
1926 | return 0; | |
1927 | ||
6a512301 GM |
1928 | /* If unset use system default (enabled if local forwarding is disabled. |
1929 | * disabled if local forwarding is enabled). | |
1930 | * If set, ignore or enforce RA independent of local forwarding state. | |
4f2e437a | 1931 | */ |
ebf98081 | 1932 | if (link->network->ipv6_accept_ra < 0) |
6a512301 GM |
1933 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ |
1934 | v = "1"; | |
ebf98081 | 1935 | else if (link->network->ipv6_accept_ra > 0) |
6a512301 GM |
1936 | /* "2" means accept RA even if ip_forward is enabled */ |
1937 | v = "2"; | |
ebf98081 | 1938 | else |
6a512301 GM |
1939 | /* "0" means ignore RA */ |
1940 | v = "0"; | |
ebf98081 | 1941 | |
4f2e437a | 1942 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); |
4f2e437a SS |
1943 | |
1944 | r = write_string_file(p, v, 0); | |
1945 | if (r < 0) { | |
1946 | /* If the right value is set anyway, don't complain */ | |
1947 | if (verify_one_line_file(p, v) > 0) | |
1948 | return 0; | |
1949 | ||
1950 | log_link_warning_errno(link, r, "Cannot configure IPv6 accept_ra for interface: %m"); | |
1951 | } | |
1952 | ||
1953 | return 0; | |
1954 | } | |
1955 | ||
8749cbcd SS |
1956 | static int link_set_ipv6_dad_transmits(Link *link) { |
1957 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; | |
1958 | const char *p = NULL; | |
1959 | int r; | |
1960 | ||
1961 | /* Make this a NOP if IPv6 is not available */ | |
1962 | if (!socket_ipv6_is_supported()) | |
1963 | return 0; | |
1964 | ||
1965 | if (link->flags & IFF_LOOPBACK) | |
1966 | return 0; | |
1967 | ||
1968 | if (link->network->ipv6_dad_transmits < 0) | |
1969 | return 0; | |
1970 | ||
1971 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); | |
1972 | ||
1973 | xsprintf(buf, "%u", link->network->ipv6_dad_transmits); | |
1974 | ||
1975 | r = write_string_file(p, buf, 0); | |
1976 | if (r < 0) { | |
1977 | /* If the right value is set anyway, don't complain */ | |
1978 | if (verify_one_line_file(p, buf) > 0) | |
1979 | return 0; | |
1980 | ||
1981 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); | |
1982 | } | |
1983 | ||
1984 | return 0; | |
1985 | } | |
1986 | ||
b69c3180 SS |
1987 | static int link_set_ipv6_hop_limit(Link *link) { |
1988 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; | |
1989 | const char *p = NULL; | |
1990 | int r; | |
1991 | ||
1992 | /* Make this a NOP if IPv6 is not available */ | |
1993 | if (!socket_ipv6_is_supported()) | |
1994 | return 0; | |
1995 | ||
1996 | if (link->flags & IFF_LOOPBACK) | |
1997 | return 0; | |
1998 | ||
1999 | if (link->network->ipv6_hop_limit < 0) | |
2000 | return 0; | |
2001 | ||
2002 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/hop_limit"); | |
2003 | ||
2004 | xsprintf(buf, "%u", link->network->ipv6_hop_limit); | |
2005 | ||
2006 | r = write_string_file(p, buf, 0); | |
2007 | if (r < 0) { | |
2008 | /* If the right value is set anyway, don't complain */ | |
2009 | if (verify_one_line_file(p, buf) > 0) | |
2010 | return 0; | |
2011 | ||
2012 | log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m"); | |
2013 | } | |
2014 | ||
2015 | return 0; | |
2016 | } | |
2017 | ||
a748b692 | 2018 | static int link_configure(Link *link) { |
02b59d57 TG |
2019 | int r; |
2020 | ||
ef1ba606 | 2021 | assert(link); |
b22d8a00 | 2022 | assert(link->network); |
8434fd5c | 2023 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 2024 | |
b98b483b AR |
2025 | r = link_set_bridge_fdb(link); |
2026 | if (r < 0) | |
2027 | return r; | |
2028 | ||
769d324c LP |
2029 | r = link_set_ipv4_forward(link); |
2030 | if (r < 0) | |
2031 | return r; | |
2032 | ||
2033 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
2034 | if (r < 0) |
2035 | return r; | |
2036 | ||
49092e22 SS |
2037 | r = link_set_ipv6_privacy_extensions(link); |
2038 | if (r < 0) | |
2039 | return r; | |
2040 | ||
4f2e437a SS |
2041 | r = link_set_ipv6_accept_ra(link); |
2042 | if (r < 0) | |
2043 | return r; | |
2044 | ||
8749cbcd SS |
2045 | r = link_set_ipv6_dad_transmits(link); |
2046 | if (r < 0) | |
2047 | return r; | |
b69c3180 SS |
2048 | |
2049 | r = link_set_ipv6_hop_limit(link); | |
2050 | if (r < 0) | |
2051 | return r; | |
8749cbcd | 2052 | |
78c958f8 | 2053 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 2054 | r = ipv4ll_configure(link); |
eb34d4af TG |
2055 | if (r < 0) |
2056 | return r; | |
2057 | } | |
2058 | ||
78c958f8 | 2059 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 2060 | r = dhcp4_configure(link); |
eb34d4af TG |
2061 | if (r < 0) |
2062 | return r; | |
eb34d4af TG |
2063 | } |
2064 | ||
78c958f8 | 2065 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
2066 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
2067 | if (r < 0) | |
2068 | return r; | |
2069 | ||
2070 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
2071 | if (r < 0) | |
2072 | return r; | |
dd43110f TG |
2073 | } |
2074 | ||
78c958f8 | 2075 | if (link_dhcp6_enabled(link)) { |
f5a8c43f TG |
2076 | r = dhcp6_configure(link); |
2077 | if (r < 0) | |
2078 | return r; | |
2079 | } | |
2080 | ||
2081 | if (link_ipv6_accept_ra_enabled(link)) { | |
de1e9928 | 2082 | r = ndisc_configure(link); |
4138fb2c PF |
2083 | if (r < 0) |
2084 | return r; | |
2085 | } | |
2086 | ||
ce43e484 SS |
2087 | if (link_lldp_enabled(link)) { |
2088 | r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp); | |
2089 | if (r < 0) | |
2090 | return r; | |
2091 | ||
2092 | r = sd_lldp_attach_event(link->lldp, NULL, 0); | |
2093 | if (r < 0) | |
2094 | return r; | |
49699bac SS |
2095 | |
2096 | r = sd_lldp_set_callback(link->lldp, | |
2097 | lldp_handler, link); | |
2098 | if (r < 0) | |
2099 | return r; | |
ce43e484 SS |
2100 | } |
2101 | ||
a61bb41c | 2102 | if (link_has_carrier(link)) { |
1e9be60b TG |
2103 | r = link_acquire_conf(link); |
2104 | if (r < 0) | |
2105 | return r; | |
cc544d5f | 2106 | } |
1e9be60b | 2107 | |
3f265037 | 2108 | return link_enter_join_netdev(link); |
505f8da7 TG |
2109 | } |
2110 | ||
1c4baffc | 2111 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 2112 | void *userdata) { |
5da8149f | 2113 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 2114 | Network *network; |
505f8da7 TG |
2115 | int r; |
2116 | ||
2117 | assert(link); | |
2118 | assert(link->ifname); | |
2119 | assert(link->manager); | |
2120 | ||
8434fd5c | 2121 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 2122 | return 1; |
505f8da7 | 2123 | |
6a7a4e4d | 2124 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 2125 | |
0d4ad91d AR |
2126 | r = link_new_bound_by_list(link); |
2127 | if (r < 0) | |
2128 | return r; | |
2129 | ||
2130 | r = link_handle_bound_by_list(link); | |
2131 | if (r < 0) | |
2132 | return r; | |
2133 | ||
c4a03a56 TG |
2134 | if (!link->network) { |
2135 | r = network_get(link->manager, link->udev_device, link->ifname, | |
2136 | &link->mac, &network); | |
2137 | if (r == -ENOENT) { | |
2138 | link_enter_unmanaged(link); | |
2139 | return 1; | |
2140 | } else if (r < 0) | |
2141 | return r; | |
505f8da7 | 2142 | |
c4a03a56 TG |
2143 | if (link->flags & IFF_LOOPBACK) { |
2144 | if (network->link_local != ADDRESS_FAMILY_NO) | |
2145 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 2146 | |
c4a03a56 TG |
2147 | if (network->dhcp != ADDRESS_FAMILY_NO) |
2148 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 2149 | |
c4a03a56 TG |
2150 | if (network->dhcp_server) |
2151 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
2152 | } | |
bd2efe92 | 2153 | |
c4a03a56 TG |
2154 | r = network_apply(link->manager, network, link); |
2155 | if (r < 0) | |
2156 | return r; | |
2157 | } | |
505f8da7 | 2158 | |
0d4ad91d AR |
2159 | r = link_new_bound_to_list(link); |
2160 | if (r < 0) | |
2161 | return r; | |
2162 | ||
a748b692 TG |
2163 | r = link_configure(link); |
2164 | if (r < 0) | |
2165 | return r; | |
2166 | ||
5da8149f | 2167 | return 1; |
505f8da7 TG |
2168 | } |
2169 | ||
4f561e8e | 2170 | int link_initialized(Link *link, struct udev_device *device) { |
1c4baffc | 2171 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f561e8e TG |
2172 | int r; |
2173 | ||
2174 | assert(link); | |
2175 | assert(link->manager); | |
2176 | assert(link->manager->rtnl); | |
2177 | assert(device); | |
2178 | ||
8434fd5c | 2179 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2180 | return 0; |
2181 | ||
679b3605 TG |
2182 | if (link->udev_device) |
2183 | return 0; | |
2184 | ||
79008bdd | 2185 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
2186 | |
2187 | link->udev_device = udev_device_ref(device); | |
2188 | ||
3c9b8860 TG |
2189 | /* udev has initialized the link, but we don't know if we have yet |
2190 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2191 | * when it returns we know that the pending NEWLINKs have already been | |
2192 | * processed and that we are up-to-date */ | |
4f561e8e | 2193 | |
3c9b8860 TG |
2194 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2195 | link->ifindex); | |
4f561e8e TG |
2196 | if (r < 0) |
2197 | return r; | |
2198 | ||
1c4baffc | 2199 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 2200 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
2201 | if (r < 0) |
2202 | return r; | |
2203 | ||
5da8149f TG |
2204 | link_ref(link); |
2205 | ||
4f561e8e TG |
2206 | return 0; |
2207 | } | |
2208 | ||
c4a03a56 | 2209 | static int link_load(Link *link) { |
0bc70f1d TG |
2210 | _cleanup_free_ char *network_file = NULL, |
2211 | *addresses = NULL, | |
f703cc2c | 2212 | *routes = NULL, |
0bc70f1d TG |
2213 | *dhcp4_address = NULL, |
2214 | *ipv4ll_address = NULL; | |
2215 | union in_addr_union address; | |
f703cc2c | 2216 | union in_addr_union route_dst; |
c598ac76 | 2217 | const char *p; |
c4a03a56 TG |
2218 | int r; |
2219 | ||
2220 | assert(link); | |
2221 | ||
2222 | r = parse_env_file(link->state_file, NEWLINE, | |
2223 | "NETWORK_FILE", &network_file, | |
2224 | "ADDRESSES", &addresses, | |
f703cc2c | 2225 | "ROUTES", &routes, |
0bc70f1d TG |
2226 | "DHCP4_ADDRESS", &dhcp4_address, |
2227 | "IPV4LL_ADDRESS", &ipv4ll_address, | |
c4a03a56 TG |
2228 | NULL); |
2229 | if (r < 0 && r != -ENOENT) | |
2230 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
2231 | ||
2232 | if (network_file) { | |
2233 | Network *network; | |
2234 | char *suffix; | |
2235 | ||
2236 | /* drop suffix */ | |
2237 | suffix = strrchr(network_file, '.'); | |
2238 | if (!suffix) { | |
2239 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
2240 | goto network_file_fail; | |
2241 | } | |
2242 | *suffix = '\0'; | |
2243 | ||
2244 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
2245 | if (r < 0) { | |
2246 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
2247 | goto network_file_fail; | |
2248 | } | |
2249 | ||
2250 | r = network_apply(link->manager, network, link); | |
2251 | if (r < 0) | |
2252 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
2253 | } | |
2254 | ||
2255 | network_file_fail: | |
2256 | ||
2257 | if (addresses) { | |
c598ac76 | 2258 | p = addresses; |
c4a03a56 | 2259 | |
c598ac76 TG |
2260 | for (;;) { |
2261 | _cleanup_free_ char *address_str = NULL; | |
c4a03a56 TG |
2262 | char *prefixlen_str; |
2263 | int family; | |
2264 | unsigned char prefixlen; | |
c4a03a56 | 2265 | |
c598ac76 TG |
2266 | r = extract_first_word(&p, &address_str, NULL, 0); |
2267 | if (r < 0) { | |
2268 | log_link_debug_errno(link, r, "Failed to extract next address string: %m"); | |
2269 | continue; | |
2270 | } if (r == 0) | |
2271 | break; | |
2272 | ||
2273 | prefixlen_str = strchr(address_str, '/'); | |
c4a03a56 | 2274 | if (!prefixlen_str) { |
c598ac76 | 2275 | log_link_debug(link, "Failed to parse address and prefix length %s", address_str); |
c4a03a56 TG |
2276 | continue; |
2277 | } | |
2278 | ||
2279 | *prefixlen_str ++ = '\0'; | |
2280 | ||
2281 | r = sscanf(prefixlen_str, "%hhu", &prefixlen); | |
2282 | if (r != 1) { | |
2283 | log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str); | |
2284 | continue; | |
2285 | } | |
2286 | ||
c598ac76 | 2287 | r = in_addr_from_string_auto(address_str, &family, &address); |
c4a03a56 | 2288 | if (r < 0) { |
c598ac76 | 2289 | log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str); |
c4a03a56 TG |
2290 | continue; |
2291 | } | |
2292 | ||
2293 | r = address_add(link, family, &address, prefixlen, NULL); | |
2294 | if (r < 0) | |
2295 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
2296 | } | |
2297 | } | |
2298 | ||
f703cc2c | 2299 | if (routes) { |
c598ac76 | 2300 | for (;;) { |
f833694d | 2301 | Route *route; |
c598ac76 | 2302 | _cleanup_free_ char *route_str = NULL; |
f833694d TG |
2303 | _cleanup_event_source_unref_ sd_event_source *expire = NULL; |
2304 | usec_t lifetime; | |
f703cc2c TG |
2305 | char *prefixlen_str; |
2306 | int family; | |
2307 | unsigned char prefixlen, tos, table; | |
2308 | uint32_t priority; | |
2309 | ||
c598ac76 TG |
2310 | r = extract_first_word(&p, &route_str, NULL, 0); |
2311 | if (r < 0) { | |
2312 | log_link_debug_errno(link, r, "Failed to extract next route string: %m"); | |
2313 | continue; | |
2314 | } if (r == 0) | |
2315 | break; | |
2316 | ||
2317 | prefixlen_str = strchr(route_str, '/'); | |
f703cc2c | 2318 | if (!prefixlen_str) { |
c598ac76 | 2319 | log_link_debug(link, "Failed to parse route %s", route_str); |
f703cc2c TG |
2320 | continue; |
2321 | } | |
2322 | ||
2323 | *prefixlen_str ++ = '\0'; | |
2324 | ||
f833694d TG |
2325 | r = sscanf(prefixlen_str, "%hhu/%hhu/%"SCNu32"/%hhu/"USEC_FMT, &prefixlen, &tos, &priority, &table, &lifetime); |
2326 | if (r != 5) { | |
2327 | log_link_debug(link, | |
2328 | "Failed to parse destination prefix length, tos, priority, table or expiration %s", | |
2329 | prefixlen_str); | |
f703cc2c TG |
2330 | continue; |
2331 | } | |
2332 | ||
c598ac76 | 2333 | r = in_addr_from_string_auto(route_str, &family, &route_dst); |
f703cc2c | 2334 | if (r < 0) { |
c598ac76 | 2335 | log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str); |
f703cc2c TG |
2336 | continue; |
2337 | } | |
2338 | ||
f833694d | 2339 | r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route); |
f703cc2c TG |
2340 | if (r < 0) |
2341 | return log_link_error_errno(link, r, "Failed to add route: %m"); | |
f833694d TG |
2342 | |
2343 | if (lifetime != USEC_INFINITY) { | |
2344 | r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), lifetime, | |
2345 | 0, route_expire_handler, route); | |
2346 | if (r < 0) | |
2347 | log_link_warning_errno(link, r, "Could not arm route expiration handler: %m"); | |
2348 | } | |
2349 | ||
2350 | route->lifetime = lifetime; | |
2351 | sd_event_source_unref(route->expire); | |
2352 | route->expire = expire; | |
2353 | expire = NULL; | |
f703cc2c TG |
2354 | } |
2355 | } | |
2356 | ||
0bc70f1d TG |
2357 | if (dhcp4_address) { |
2358 | r = in_addr_from_string(AF_INET, dhcp4_address, &address); | |
2359 | if (r < 0) { | |
2360 | log_link_debug_errno(link, r, "Falied to parse DHCPv4 address %s: %m", dhcp4_address); | |
2361 | goto dhcp4_address_fail; | |
2362 | } | |
2363 | ||
2364 | r = sd_dhcp_client_new(&link->dhcp_client); | |
2365 | if (r < 0) | |
2366 | return log_link_error_errno(link, r, "Falied to create DHCPv4 client: %m"); | |
2367 | ||
2368 | r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in); | |
2369 | if (r < 0) | |
2370 | return log_link_error_errno(link, r, "Falied to set inital DHCPv4 address %s: %m", dhcp4_address); | |
2371 | } | |
2372 | ||
2373 | dhcp4_address_fail: | |
2374 | ||
2375 | if (ipv4ll_address) { | |
2376 | r = in_addr_from_string(AF_INET, ipv4ll_address, &address); | |
2377 | if (r < 0) { | |
2378 | log_link_debug_errno(link, r, "Falied to parse IPv4LL address %s: %m", ipv4ll_address); | |
2379 | goto ipv4ll_address_fail; | |
2380 | } | |
2381 | ||
2382 | r = sd_ipv4ll_new(&link->ipv4ll); | |
2383 | if (r < 0) | |
2384 | return log_link_error_errno(link, r, "Falied to create IPv4LL client: %m"); | |
2385 | ||
2386 | r = sd_ipv4ll_set_address(link->ipv4ll, &address.in); | |
2387 | if (r < 0) | |
2388 | return log_link_error_errno(link, r, "Falied to set inital IPv4LL address %s: %m", ipv4ll_address); | |
2389 | } | |
2390 | ||
2391 | ipv4ll_address_fail: | |
2392 | ||
c4a03a56 TG |
2393 | return 0; |
2394 | } | |
2395 | ||
1c4baffc | 2396 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
2397 | Link *link; |
2398 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
2399 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
2400 | int r; | |
2401 | ||
2402 | assert(m); | |
fbbeb65a | 2403 | assert(m->rtnl); |
505f8da7 TG |
2404 | assert(message); |
2405 | assert(ret); | |
2406 | ||
2407 | r = link_new(m, message, ret); | |
2408 | if (r < 0) | |
2409 | return r; | |
2410 | ||
2411 | link = *ret; | |
2412 | ||
6a7a4e4d | 2413 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2414 | |
c4a03a56 TG |
2415 | r = link_load(link); |
2416 | if (r < 0) | |
2417 | return r; | |
2418 | ||
75f86906 | 2419 | if (detect_container() <= 0) { |
505f8da7 | 2420 | /* not in a container, udev will be around */ |
ae06ab10 | 2421 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 2422 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
5c416fc4 TG |
2423 | if (!device) { |
2424 | r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
2425 | goto failed; | |
2426 | } | |
505f8da7 | 2427 | |
3c4cb064 | 2428 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 2429 | /* not yet ready */ |
79008bdd | 2430 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2431 | return 0; |
3c4cb064 | 2432 | } |
505f8da7 | 2433 | |
4f561e8e TG |
2434 | r = link_initialized(link, device); |
2435 | if (r < 0) | |
5c416fc4 | 2436 | goto failed; |
4f561e8e | 2437 | } else { |
5da8149f TG |
2438 | /* we are calling a callback directly, so must take a ref */ |
2439 | link_ref(link); | |
2440 | ||
4f561e8e TG |
2441 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
2442 | if (r < 0) | |
5c416fc4 | 2443 | goto failed; |
4f561e8e | 2444 | } |
505f8da7 | 2445 | |
a748b692 | 2446 | return 0; |
5c416fc4 TG |
2447 | failed: |
2448 | link_enter_failed(link); | |
2449 | return r; | |
a748b692 TG |
2450 | } |
2451 | ||
9c0a72f9 TG |
2452 | static int link_carrier_gained(Link *link) { |
2453 | int r; | |
2454 | ||
2455 | assert(link); | |
2456 | ||
2457 | if (link->network) { | |
2458 | r = link_acquire_conf(link); | |
2459 | if (r < 0) { | |
2460 | link_enter_failed(link); | |
2461 | return r; | |
2462 | } | |
2463 | } | |
2464 | ||
0d4ad91d AR |
2465 | r = link_handle_bound_by_list(link); |
2466 | if (r < 0) | |
2467 | return r; | |
2468 | ||
9c0a72f9 TG |
2469 | return 0; |
2470 | } | |
2471 | ||
2472 | static int link_carrier_lost(Link *link) { | |
2473 | int r; | |
2474 | ||
2475 | assert(link); | |
2476 | ||
2477 | r = link_stop_clients(link); | |
2478 | if (r < 0) { | |
2479 | link_enter_failed(link); | |
2480 | return r; | |
2481 | } | |
2482 | ||
0d4ad91d AR |
2483 | r = link_handle_bound_by_list(link); |
2484 | if (r < 0) | |
2485 | return r; | |
2486 | ||
9c0a72f9 TG |
2487 | return 0; |
2488 | } | |
2489 | ||
2490 | int link_carrier_reset(Link *link) { | |
2491 | int r; | |
2492 | ||
2493 | assert(link); | |
2494 | ||
2495 | if (link_has_carrier(link)) { | |
2496 | r = link_carrier_lost(link); | |
2497 | if (r < 0) | |
2498 | return r; | |
2499 | ||
2500 | r = link_carrier_gained(link); | |
2501 | if (r < 0) | |
2502 | return r; | |
2503 | ||
6a7a4e4d | 2504 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2505 | } |
2506 | ||
2507 | return 0; | |
2508 | } | |
2509 | ||
2510 | ||
1c4baffc | 2511 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 2512 | struct ether_addr mac; |
ca4e095a | 2513 | const char *ifname; |
afe7fd56 | 2514 | uint32_t mtu; |
a61bb41c | 2515 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
2516 | int r; |
2517 | ||
dd3efc09 | 2518 | assert(link); |
b8941f74 | 2519 | assert(link->ifname); |
22936833 TG |
2520 | assert(m); |
2521 | ||
7619683b TG |
2522 | if (link->state == LINK_STATE_LINGER) { |
2523 | link_ref(link); | |
6a7a4e4d | 2524 | log_link_info(link, "Link readded"); |
e331e246 | 2525 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
2526 | |
2527 | r = link_new_carrier_maps(link); | |
2528 | if (r < 0) | |
2529 | return r; | |
7619683b TG |
2530 | } |
2531 | ||
1c4baffc | 2532 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2533 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 2534 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 2535 | |
0d4ad91d AR |
2536 | link_free_carrier_maps(link); |
2537 | ||
2fc09a9c DM |
2538 | r = free_and_strdup(&link->ifname, ifname); |
2539 | if (r < 0) | |
2540 | return r; | |
0d4ad91d AR |
2541 | |
2542 | r = link_new_carrier_maps(link); | |
2543 | if (r < 0) | |
2544 | return r; | |
b8941f74 TG |
2545 | } |
2546 | ||
1c4baffc | 2547 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2548 | if (r >= 0 && mtu > 0) { |
2549 | link->mtu = mtu; | |
2550 | if (!link->original_mtu) { | |
2551 | link->original_mtu = mtu; | |
6a7a4e4d | 2552 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2553 | } |
2554 | ||
2555 | if (link->dhcp_client) { | |
3c9b8860 TG |
2556 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2557 | link->mtu); | |
afe7fd56 | 2558 | if (r < 0) { |
6a7a4e4d | 2559 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
2560 | return r; |
2561 | } | |
2562 | } | |
9842de0d | 2563 | } |
69629de9 | 2564 | |
e9189a1f TG |
2565 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2566 | set, simply ignore them. */ | |
1c4baffc | 2567 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2568 | if (r >= 0) { |
3c9b8860 TG |
2569 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2570 | ETH_ALEN)) { | |
c49b33ac | 2571 | |
3c9b8860 TG |
2572 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2573 | ETH_ALEN); | |
c49b33ac | 2574 | |
79008bdd | 2575 | log_link_debug(link, "MAC address: " |
20861203 TG |
2576 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
2577 | mac.ether_addr_octet[0], | |
2578 | mac.ether_addr_octet[1], | |
2579 | mac.ether_addr_octet[2], | |
2580 | mac.ether_addr_octet[3], | |
2581 | mac.ether_addr_octet[4], | |
2582 | mac.ether_addr_octet[5]); | |
c49b33ac | 2583 | |
20861203 TG |
2584 | if (link->ipv4ll) { |
2585 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
2586 | if (r < 0) |
2587 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 2588 | } |
c49b33ac | 2589 | |
20861203 | 2590 | if (link->dhcp_client) { |
3c9b8860 | 2591 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
2592 | (const uint8_t *) &link->mac, |
2593 | sizeof (link->mac), | |
2594 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2595 | if (r < 0) |
2596 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
c49b33ac | 2597 | } |
4138fb2c PF |
2598 | |
2599 | if (link->dhcp6_client) { | |
2600 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
2601 | (const uint8_t *) &link->mac, |
2602 | sizeof (link->mac), | |
2603 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2604 | if (r < 0) |
2605 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
4138fb2c | 2606 | } |
c49b33ac | 2607 | } |
4f882b2a TG |
2608 | } |
2609 | ||
a61bb41c TG |
2610 | had_carrier = link_has_carrier(link); |
2611 | ||
2612 | r = link_update_flags(link, m); | |
2613 | if (r < 0) | |
2614 | return r; | |
2615 | ||
2616 | carrier_gained = !had_carrier && link_has_carrier(link); | |
2617 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2618 | ||
2619 | if (carrier_gained) { | |
6a7a4e4d | 2620 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2621 | |
9c0a72f9 TG |
2622 | r = link_carrier_gained(link); |
2623 | if (r < 0) | |
2624 | return r; | |
a61bb41c | 2625 | } else if (carrier_lost) { |
6a7a4e4d | 2626 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2627 | |
9c0a72f9 TG |
2628 | r = link_carrier_lost(link); |
2629 | if (r < 0) | |
a61bb41c | 2630 | return r; |
9c0a72f9 | 2631 | |
a61bb41c TG |
2632 | } |
2633 | ||
2634 | return 0; | |
dd3efc09 | 2635 | } |
fe8db0c5 TG |
2636 | |
2637 | int link_save(Link *link) { | |
68a8723c | 2638 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2639 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2640 | const char *admin_state, *oper_state; |
e7780c8d | 2641 | Address *a; |
c1eb9872 | 2642 | Route *route; |
e7780c8d | 2643 | Iterator i; |
fe8db0c5 TG |
2644 | int r; |
2645 | ||
2646 | assert(link); | |
2647 | assert(link->state_file); | |
68a8723c | 2648 | assert(link->lease_file); |
bbf7c048 TG |
2649 | assert(link->manager); |
2650 | ||
370e9930 TG |
2651 | if (link->state == LINK_STATE_LINGER) { |
2652 | unlink(link->state_file); | |
2653 | return 0; | |
2654 | } | |
2655 | ||
deb2e523 TG |
2656 | admin_state = link_state_to_string(link->state); |
2657 | assert(admin_state); | |
2658 | ||
e375dcde TG |
2659 | oper_state = link_operstate_to_string(link->operstate); |
2660 | assert(oper_state); | |
deb2e523 | 2661 | |
fe8db0c5 TG |
2662 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2663 | if (r < 0) | |
6a7a4e4d | 2664 | goto fail; |
fe8db0c5 TG |
2665 | |
2666 | fchmod(fileno(f), 0644); | |
2667 | ||
2668 | fprintf(f, | |
2669 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2670 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
2671 | "OPER_STATE=%s\n", |
2672 | admin_state, oper_state); | |
fe8db0c5 | 2673 | |
bcb7a07e | 2674 | if (link->network) { |
ea352b40 LP |
2675 | char **address, **domain; |
2676 | bool space; | |
07bdc70d PF |
2677 | sd_dhcp6_lease *dhcp6_lease = NULL; |
2678 | ||
2679 | if (link->dhcp6_client) { | |
2680 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, | |
2681 | &dhcp6_lease); | |
2682 | if (r < 0) | |
2683 | log_link_debug(link, "No DHCPv6 lease"); | |
2684 | } | |
b0e39c82 | 2685 | |
adc5b2e2 TG |
2686 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2687 | ||
b0e39c82 | 2688 | fputs("DNS=", f); |
ea352b40 LP |
2689 | space = false; |
2690 | STRV_FOREACH(address, link->network->dns) { | |
2691 | if (space) | |
2692 | fputc(' ', f); | |
2693 | fputs(*address, f); | |
2694 | space = true; | |
2695 | } | |
d5314fff | 2696 | |
b0e39c82 TG |
2697 | if (link->network->dhcp_dns && |
2698 | link->dhcp_lease) { | |
2699 | const struct in_addr *addresses; | |
2700 | ||
2701 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
2702 | if (r > 0) { | |
ea352b40 LP |
2703 | if (space) |
2704 | fputc(' ', f); | |
b0e39c82 | 2705 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2706 | space = true; |
2707 | } | |
2708 | } | |
2709 | ||
2710 | if (link->network->dhcp_dns && dhcp6_lease) { | |
2711 | struct in6_addr *in6_addrs; | |
2712 | ||
2713 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
2714 | if (r > 0) { | |
2715 | if (space) | |
2716 | fputc(' ', f); | |
2717 | serialize_in6_addrs(f, in6_addrs, r); | |
b0e39c82 TG |
2718 | } |
2719 | } | |
2720 | ||
2ce40956 | 2721 | fputc('\n', f); |
b0e39c82 | 2722 | |
2ce40956 | 2723 | fputs("NTP=", f); |
ea352b40 LP |
2724 | space = false; |
2725 | STRV_FOREACH(address, link->network->ntp) { | |
2726 | if (space) | |
2727 | fputc(' ', f); | |
2728 | fputs(*address, f); | |
2729 | space = true; | |
2730 | } | |
d5314fff | 2731 | |
b0e39c82 TG |
2732 | if (link->network->dhcp_ntp && |
2733 | link->dhcp_lease) { | |
2734 | const struct in_addr *addresses; | |
2735 | ||
2736 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
2737 | if (r > 0) { | |
ea352b40 LP |
2738 | if (space) |
2739 | fputc(' ', f); | |
b0e39c82 | 2740 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2741 | space = true; |
2742 | } | |
2743 | } | |
2744 | ||
2745 | if (link->network->dhcp_ntp && dhcp6_lease) { | |
2746 | struct in6_addr *in6_addrs; | |
2747 | char **hosts; | |
2748 | char **hostname; | |
2749 | ||
2750 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
2751 | &in6_addrs); | |
2752 | if (r > 0) { | |
2753 | if (space) | |
2754 | fputc(' ', f); | |
2755 | serialize_in6_addrs(f, in6_addrs, r); | |
2756 | space = true; | |
2757 | } | |
2758 | ||
2759 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
2760 | if (r > 0) { | |
2761 | STRV_FOREACH(hostname, hosts) { | |
2762 | if (space) | |
2763 | fputc(' ', f); | |
2764 | fputs(*hostname, f); | |
2765 | space = true; | |
2766 | } | |
b0e39c82 TG |
2767 | } |
2768 | } | |
2769 | ||
2ce40956 | 2770 | fputc('\n', f); |
bd8f6538 | 2771 | |
2ce40956 | 2772 | fputs("DOMAINS=", f); |
ea352b40 LP |
2773 | space = false; |
2774 | STRV_FOREACH(domain, link->network->domains) { | |
2775 | if (space) | |
2776 | fputc(' ', f); | |
2777 | fputs(*domain, f); | |
2778 | space = true; | |
2779 | } | |
d5314fff | 2780 | |
ad0734e8 | 2781 | if (link->network->dhcp_domains && |
9b4d1882 TG |
2782 | link->dhcp_lease) { |
2783 | const char *domainname; | |
2784 | ||
2785 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
6192b846 | 2786 | if (r >= 0) { |
ea352b40 LP |
2787 | if (space) |
2788 | fputc(' ', f); | |
6192b846 | 2789 | fputs(domainname, f); |
07bdc70d PF |
2790 | space = true; |
2791 | } | |
2792 | } | |
2793 | ||
2794 | if (link->network->dhcp_domains && dhcp6_lease) { | |
2795 | char **domains; | |
2796 | ||
2797 | r = sd_dhcp6_lease_get_domains(dhcp6_lease, &domains); | |
2798 | if (r >= 0) { | |
2799 | STRV_FOREACH(domain, domains) { | |
2800 | if (space) | |
2801 | fputc(' ', f); | |
2802 | fputs(*domain, f); | |
2803 | space = true; | |
2804 | } | |
6192b846 | 2805 | } |
9b4d1882 TG |
2806 | } |
2807 | ||
2ce40956 | 2808 | fputc('\n', f); |
6192b846 | 2809 | |
67272d15 TG |
2810 | fprintf(f, "WILDCARD_DOMAIN=%s\n", |
2811 | yes_no(link->network->wildcard_domain)); | |
2812 | ||
3c9b8860 | 2813 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 2814 | resolve_support_to_string(link->network->llmnr)); |
e7780c8d | 2815 | |
2ce40956 | 2816 | fputs("ADDRESSES=", f); |
e7780c8d TG |
2817 | space = false; |
2818 | SET_FOREACH(a, link->addresses, i) { | |
2819 | _cleanup_free_ char *address_str = NULL; | |
2820 | ||
2821 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
2822 | if (r < 0) | |
2823 | goto fail; | |
2824 | ||
e7780c8d TG |
2825 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
2826 | space = true; | |
2827 | } | |
2828 | ||
2ce40956 | 2829 | fputc('\n', f); |
c1eb9872 TG |
2830 | |
2831 | fputs("ROUTES=", f); | |
2832 | space = false; | |
2833 | SET_FOREACH(route, link->routes, i) { | |
2834 | _cleanup_free_ char *route_str = NULL; | |
2835 | ||
2836 | r = in_addr_to_string(route->family, &route->dst, &route_str); | |
2837 | if (r < 0) | |
2838 | goto fail; | |
2839 | ||
f833694d TG |
2840 | fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%hhu/"USEC_FMT, space ? " " : "", route_str, |
2841 | route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime); | |
c1eb9872 TG |
2842 | space = true; |
2843 | } | |
2844 | ||
2845 | fputc('\n', f); | |
bcb7a07e | 2846 | } |
7374f9d8 | 2847 | |
0d4ad91d AR |
2848 | if (!hashmap_isempty(link->bound_to_links)) { |
2849 | Link *carrier; | |
0d4ad91d AR |
2850 | bool space = false; |
2851 | ||
2852 | fputs("CARRIER_BOUND_TO=", f); | |
2853 | HASHMAP_FOREACH(carrier, link->bound_to_links, i) { | |
2854 | if (space) | |
2855 | fputc(' ', f); | |
2856 | fputs(carrier->ifname, f); | |
2857 | space = true; | |
2858 | } | |
2859 | ||
2ce40956 | 2860 | fputc('\n', f); |
0d4ad91d AR |
2861 | } |
2862 | ||
2863 | if (!hashmap_isempty(link->bound_by_links)) { | |
2864 | Link *carrier; | |
0d4ad91d AR |
2865 | bool space = false; |
2866 | ||
2867 | fputs("CARRIER_BOUND_BY=", f); | |
0d4ad91d AR |
2868 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
2869 | if (space) | |
2870 | fputc(' ', f); | |
2871 | fputs(carrier->ifname, f); | |
2872 | space = true; | |
2873 | } | |
2874 | ||
2ce40956 | 2875 | fputc('\n', f); |
0d4ad91d AR |
2876 | } |
2877 | ||
8eb9058d | 2878 | if (link->dhcp_lease) { |
0bc70f1d | 2879 | struct in_addr address; |
8eb9058d LP |
2880 | const char *tz = NULL; |
2881 | ||
0bc70f1d TG |
2882 | assert(link->network); |
2883 | ||
8eb9058d LP |
2884 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); |
2885 | if (r >= 0) | |
2886 | fprintf(f, "TIMEZONE=%s\n", tz); | |
8eb9058d | 2887 | |
0bc70f1d TG |
2888 | r = sd_dhcp_lease_get_address(link->dhcp_lease, &address); |
2889 | if (r >= 0) { | |
2890 | fputs("DHCP4_ADDRESS=", f); | |
2891 | serialize_in_addrs(f, &address, 1); | |
2892 | fputc('\n', f); | |
2893 | } | |
d9876a52 | 2894 | |
bd91b83e | 2895 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 2896 | if (r < 0) |
c2d6bd61 | 2897 | goto fail; |
fe8db0c5 | 2898 | |
7374f9d8 | 2899 | fprintf(f, |
b0e39c82 TG |
2900 | "DHCP_LEASE=%s\n", |
2901 | link->lease_file); | |
deb2e523 | 2902 | } else |
68a8723c | 2903 | unlink(link->lease_file); |
fe8db0c5 | 2904 | |
0bc70f1d TG |
2905 | if (link->ipv4ll) { |
2906 | struct in_addr address; | |
2907 | ||
2908 | r = sd_ipv4ll_get_address(link->ipv4ll, &address); | |
2909 | if (r >= 0) { | |
2910 | fputs("IPV4LL_ADDRESS=", f); | |
2911 | serialize_in_addrs(f, &address, 1); | |
2912 | fputc('\n', f); | |
2913 | } | |
2914 | } | |
2915 | ||
49699bac SS |
2916 | if (link->lldp) { |
2917 | assert(link->network); | |
2918 | ||
2919 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
2920 | if (r < 0) | |
2921 | goto fail; | |
2922 | ||
2923 | fprintf(f, | |
2924 | "LLDP_FILE=%s\n", | |
2925 | link->lldp_file); | |
2926 | } else | |
2927 | unlink(link->lldp_file); | |
2928 | ||
c2d6bd61 LP |
2929 | r = fflush_and_check(f); |
2930 | if (r < 0) | |
2931 | goto fail; | |
fe8db0c5 | 2932 | |
c2d6bd61 | 2933 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 2934 | r = -errno; |
c2d6bd61 | 2935 | goto fail; |
fe8db0c5 TG |
2936 | } |
2937 | ||
c2d6bd61 | 2938 | return 0; |
dacd6cee | 2939 | |
c2d6bd61 | 2940 | fail: |
6a7a4e4d | 2941 | (void) unlink(link->state_file); |
6a7a4e4d LP |
2942 | if (temp_path) |
2943 | (void) unlink(temp_path); | |
2944 | ||
dacd6cee | 2945 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
2946 | } |
2947 | ||
84de38c5 TG |
2948 | /* The serialized state in /run is no longer up-to-date. */ |
2949 | void link_dirty(Link *link) { | |
2950 | int r; | |
2951 | ||
2952 | assert(link); | |
2953 | ||
2954 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); | |
2955 | if (r < 0) | |
2956 | /* allocation errors are ignored */ | |
2957 | return; | |
2958 | ||
2959 | r = set_put(link->manager->dirty_links, link); | |
2960 | if (r < 0) | |
2961 | /* allocation errors are ignored */ | |
2962 | return; | |
2963 | ||
2964 | link_ref(link); | |
2965 | } | |
2966 | ||
2967 | /* The serialized state in /run is up-to-date */ | |
2968 | void link_clean(Link *link) { | |
2969 | assert(link); | |
2970 | assert(link->manager); | |
2971 | ||
2972 | set_remove(link->manager->dirty_links, link); | |
2973 | link_unref(link); | |
2974 | } | |
2975 | ||
fe8db0c5 | 2976 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 2977 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
2978 | [LINK_STATE_ENSLAVING] = "configuring", |
2979 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
2980 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
2981 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 2982 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2983 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2984 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2985 | }; |
2986 | ||
2987 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
2988 | |
2989 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
2990 | [LINK_OPERSTATE_OFF] = "off", |
2991 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
2992 | [LINK_OPERSTATE_DORMANT] = "dormant", |
2993 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
2994 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
2995 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
2996 | }; | |
2997 | ||
2998 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |