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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 | |
1346b1f0 | 26 | #include "bus-util.h" |
bd91b83e | 27 | #include "dhcp-lease-internal.h" |
cf1d700d TG |
28 | #include "fileio.h" |
29 | #include "netlink-util.h" | |
c6f7c917 | 30 | #include "network-internal.h" |
cf1d700d TG |
31 | #include "set.h" |
32 | #include "socket-util.h" | |
33 | #include "udev-util.h" | |
34 | #include "util.h" | |
35 | #include "virt.h" | |
fc2f9534 | 36 | |
5a8bcb67 LP |
37 | #include "networkd-link.h" |
38 | #include "networkd-netdev.h" | |
fe8db0c5 | 39 | |
a97dcc12 | 40 | bool link_dhcp6_enabled(Link *link) { |
78c958f8 TG |
41 | if (link->flags & IFF_LOOPBACK) |
42 | return false; | |
43 | ||
44 | if (!link->network) | |
45 | return false; | |
46 | ||
e0ee46f2 | 47 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
48 | } |
49 | ||
a97dcc12 | 50 | bool link_dhcp4_enabled(Link *link) { |
78c958f8 TG |
51 | if (link->flags & IFF_LOOPBACK) |
52 | return false; | |
53 | ||
54 | if (!link->network) | |
55 | return false; | |
56 | ||
e0ee46f2 | 57 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
58 | } |
59 | ||
a97dcc12 | 60 | bool link_dhcp4_server_enabled(Link *link) { |
78c958f8 TG |
61 | if (link->flags & IFF_LOOPBACK) |
62 | return false; | |
63 | ||
64 | if (!link->network) | |
65 | return false; | |
66 | ||
67 | return link->network->dhcp_server; | |
68 | } | |
69 | ||
a97dcc12 | 70 | bool link_ipv4ll_enabled(Link *link) { |
78c958f8 TG |
71 | if (link->flags & IFF_LOOPBACK) |
72 | return false; | |
73 | ||
74 | if (!link->network) | |
75 | return false; | |
76 | ||
e0ee46f2 | 77 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
78 | } |
79 | ||
80 | bool link_ipv6ll_enabled(Link *link) { | |
81 | if (link->flags & IFF_LOOPBACK) | |
82 | return false; | |
83 | ||
84 | if (!link->network) | |
85 | return false; | |
86 | ||
e0ee46f2 | 87 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
88 | } |
89 | ||
a97dcc12 | 90 | bool link_lldp_enabled(Link *link) { |
ce43e484 SS |
91 | if (link->flags & IFF_LOOPBACK) |
92 | return false; | |
93 | ||
94 | if (!link->network) | |
95 | return false; | |
96 | ||
5a8bcb67 | 97 | if (link->network->bridge) |
ce43e484 SS |
98 | return false; |
99 | ||
100 | return link->network->lldp; | |
101 | } | |
102 | ||
769d324c | 103 | static bool link_ipv4_forward_enabled(Link *link) { |
5a8bcb67 LP |
104 | if (link->flags & IFF_LOOPBACK) |
105 | return false; | |
106 | ||
107 | if (!link->network) | |
108 | return false; | |
109 | ||
e0ee46f2 | 110 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
111 | } |
112 | ||
113 | static bool link_ipv6_forward_enabled(Link *link) { | |
114 | if (link->flags & IFF_LOOPBACK) | |
115 | return false; | |
116 | ||
117 | if (!link->network) | |
118 | return false; | |
119 | ||
e0ee46f2 | 120 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
121 | } |
122 | ||
1f0d9695 | 123 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
49092e22 | 124 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 125 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
126 | |
127 | if (!link->network) | |
1f0d9695 | 128 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
129 | |
130 | return link->network->ipv6_privacy_extensions; | |
131 | } | |
132 | ||
84de38c5 TG |
133 | void link_update_operstate(Link *link) { |
134 | LinkOperationalState operstate; | |
135 | assert(link); | |
136 | ||
137 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
138 | operstate = LINK_OPERSTATE_DORMANT; | |
139 | else if (link_has_carrier(link)) { | |
140 | Address *address; | |
141 | uint8_t scope = RT_SCOPE_NOWHERE; | |
142 | Iterator i; | |
143 | ||
144 | /* if we have carrier, check what addresses we have */ | |
145 | SET_FOREACH(address, link->addresses, i) { | |
146 | if (!address_is_ready(address)) | |
147 | continue; | |
148 | ||
149 | if (address->scope < scope) | |
150 | scope = address->scope; | |
151 | } | |
152 | ||
153 | /* for operstate we also take foreign addresses into account */ | |
154 | SET_FOREACH(address, link->addresses_foreign, i) { | |
155 | if (!address_is_ready(address)) | |
156 | continue; | |
157 | ||
158 | if (address->scope < scope) | |
159 | scope = address->scope; | |
160 | } | |
161 | ||
162 | if (scope < RT_SCOPE_SITE) | |
163 | /* universally accessible addresses found */ | |
164 | operstate = LINK_OPERSTATE_ROUTABLE; | |
165 | else if (scope < RT_SCOPE_HOST) | |
166 | /* only link or site local addresses found */ | |
167 | operstate = LINK_OPERSTATE_DEGRADED; | |
168 | else | |
169 | /* no useful addresses found */ | |
170 | operstate = LINK_OPERSTATE_CARRIER; | |
171 | } else if (link->flags & IFF_UP) | |
172 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
173 | else | |
174 | operstate = LINK_OPERSTATE_OFF; | |
175 | ||
176 | if (link->operstate != operstate) { | |
177 | link->operstate = operstate; | |
178 | link_send_changed(link, "OperationalState", NULL); | |
179 | link_dirty(link); | |
180 | manager_dirty(link->manager); | |
181 | } | |
182 | } | |
183 | ||
51d18171 TG |
184 | #define FLAG_STRING(string, flag, old, new) \ |
185 | (((old ^ new) & flag) \ | |
186 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
187 | : "") | |
188 | ||
1c4baffc | 189 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
190 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
191 | uint8_t operstate; | |
192 | int r; | |
193 | ||
194 | assert(link); | |
195 | ||
196 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
197 | if (r < 0) |
198 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 199 | |
1c4baffc | 200 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
201 | if (r < 0) |
202 | /* if we got a message without operstate, take it to mean | |
203 | the state was unchanged */ | |
204 | operstate = link->kernel_operstate; | |
205 | ||
206 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
207 | return 0; | |
208 | ||
209 | if (link->flags != flags) { | |
6a7a4e4d | 210 | 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 |
211 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
212 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
213 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
214 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
215 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
216 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
217 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
218 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
219 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
220 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
221 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
222 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
223 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
224 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
225 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
226 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
227 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
228 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
229 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
230 | ||
231 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
232 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
233 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
234 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
235 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
236 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
237 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
238 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
239 | ||
240 | /* link flags are currently at most 18 bits, let's align to | |
241 | * printing 20 */ | |
242 | if (unknown_flags_added) | |
79008bdd | 243 | log_link_debug(link, |
6a7a4e4d | 244 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
245 | unknown_flags_added); |
246 | ||
247 | if (unknown_flags_removed) | |
79008bdd | 248 | log_link_debug(link, |
6a7a4e4d | 249 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
250 | unknown_flags_removed); |
251 | } | |
252 | ||
253 | link->flags = flags; | |
254 | link->kernel_operstate = operstate; | |
255 | ||
84de38c5 | 256 | link_update_operstate(link); |
51d18171 TG |
257 | |
258 | return 0; | |
259 | } | |
260 | ||
1c4baffc | 261 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 262 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 263 | uint16_t type; |
ca4e095a | 264 | const char *ifname; |
505f8da7 | 265 | int r, ifindex; |
f579559b | 266 | |
0c2f9b84 | 267 | assert(manager); |
505f8da7 | 268 | assert(message); |
f579559b TG |
269 | assert(ret); |
270 | ||
1c4baffc | 271 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
272 | if (r < 0) |
273 | return r; | |
274 | else if (type != RTM_NEWLINK) | |
275 | return -EINVAL; | |
276 | ||
277 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
278 | if (r < 0) | |
279 | return r; | |
280 | else if (ifindex <= 0) | |
281 | return -EINVAL; | |
282 | ||
1c4baffc | 283 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
284 | if (r < 0) |
285 | return r; | |
286 | ||
f579559b TG |
287 | link = new0(Link, 1); |
288 | if (!link) | |
289 | return -ENOMEM; | |
290 | ||
14b746f7 | 291 | link->n_ref = 1; |
5a3eb5a7 | 292 | link->manager = manager; |
8434fd5c | 293 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 294 | link->rtnl_extended_attrs = true; |
505f8da7 TG |
295 | link->ifindex = ifindex; |
296 | link->ifname = strdup(ifname); | |
297 | if (!link->ifname) | |
298 | return -ENOMEM; | |
f579559b | 299 | |
1c4baffc | 300 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 301 | if (r < 0) |
79008bdd | 302 | log_link_debug(link, "MAC address not found for new device, continuing without"); |
512922f8 | 303 | |
3c9b8860 TG |
304 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", |
305 | link->ifindex); | |
fe8db0c5 | 306 | if (r < 0) |
315db1a8 | 307 | return -ENOMEM; |
fe8db0c5 | 308 | |
3c9b8860 TG |
309 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", |
310 | link->ifindex); | |
68a8723c TG |
311 | if (r < 0) |
312 | return -ENOMEM; | |
313 | ||
49699bac SS |
314 | r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", |
315 | link->ifindex); | |
316 | if (r < 0) | |
317 | return -ENOMEM; | |
318 | ||
319 | ||
d5099efc | 320 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
321 | if (r < 0) |
322 | return r; | |
323 | ||
324 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
325 | if (r < 0) |
326 | return r; | |
327 | ||
51d18171 TG |
328 | r = link_update_flags(link, message); |
329 | if (r < 0) | |
330 | return r; | |
331 | ||
f579559b TG |
332 | *ret = link; |
333 | link = NULL; | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
14b746f7 | 338 | static void link_free(Link *link) { |
428fd0a7 | 339 | Address *address; |
0d4ad91d AR |
340 | Iterator i; |
341 | Link *carrier; | |
428fd0a7 | 342 | |
f579559b TG |
343 | if (!link) |
344 | return; | |
345 | ||
cf1d700d TG |
346 | while (!set_isempty(link->addresses)) |
347 | address_free(set_first(link->addresses)); | |
348 | ||
349 | set_free(link->addresses); | |
428fd0a7 | 350 | |
adda1ed9 TG |
351 | while (!set_isempty(link->addresses_foreign)) |
352 | address_free(set_first(link->addresses_foreign)); | |
353 | ||
354 | set_free(link->addresses_foreign); | |
355 | ||
11bf3cce LP |
356 | while ((address = link->pool_addresses)) { |
357 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
358 | address_free(address); | |
359 | } | |
360 | ||
bfcdba8d | 361 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 362 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 363 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 364 | |
68a8723c TG |
365 | free(link->lease_file); |
366 | ||
07e10d1a TG |
367 | sd_lldp_free(link->lldp); |
368 | ||
49699bac SS |
369 | free(link->lldp_file); |
370 | ||
56cd007a | 371 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 372 | sd_dhcp6_client_unref(link->dhcp6_client); |
de1e9928 | 373 | sd_ndisc_unref(link->ndisc_router_discovery); |
4138fb2c | 374 | |
28aeb07f | 375 | if (link->manager) |
ae06ab10 | 376 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 377 | |
c166a070 | 378 | free(link->ifname); |
68a8723c | 379 | |
84de38c5 | 380 | (void)unlink(link->state_file); |
fe8db0c5 | 381 | free(link->state_file); |
c166a070 | 382 | |
b5db00e5 UTL |
383 | udev_device_unref(link->udev_device); |
384 | ||
0d4ad91d AR |
385 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
386 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
387 | hashmap_free(link->bound_to_links); | |
388 | ||
389 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
390 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
391 | hashmap_free(link->bound_by_links); | |
392 | ||
f579559b TG |
393 | free(link); |
394 | } | |
395 | ||
14b746f7 | 396 | Link *link_unref(Link *link) { |
957325b7 TG |
397 | if (!link) |
398 | return NULL; | |
399 | ||
400 | assert(link->n_ref > 0); | |
401 | ||
402 | link->n_ref --; | |
403 | ||
404 | if (link->n_ref > 0) | |
405 | return NULL; | |
406 | ||
407 | link_free(link); | |
14b746f7 TG |
408 | |
409 | return NULL; | |
410 | } | |
411 | ||
412 | Link *link_ref(Link *link) { | |
957325b7 TG |
413 | if (!link) |
414 | return NULL; | |
415 | ||
416 | assert(link->n_ref > 0); | |
417 | ||
418 | link->n_ref ++; | |
14b746f7 TG |
419 | |
420 | return link; | |
421 | } | |
422 | ||
11a7f229 TG |
423 | int link_get(Manager *m, int ifindex, Link **ret) { |
424 | Link *link; | |
11a7f229 TG |
425 | |
426 | assert(m); | |
11a7f229 TG |
427 | assert(ifindex); |
428 | assert(ret); | |
429 | ||
ae06ab10 | 430 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
431 | if (!link) |
432 | return -ENODEV; | |
433 | ||
434 | *ret = link; | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
e331e246 TG |
439 | static void link_set_state(Link *link, LinkState state) { |
440 | assert(link); | |
441 | ||
442 | if (link->state == state) | |
443 | return; | |
444 | ||
445 | link->state = state; | |
446 | ||
447 | link_send_changed(link, "AdministrativeState", NULL); | |
448 | ||
449 | return; | |
450 | } | |
451 | ||
57bd6899 TG |
452 | static void link_enter_unmanaged(Link *link) { |
453 | assert(link); | |
454 | ||
6a7a4e4d | 455 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 456 | |
e331e246 | 457 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 458 | |
84de38c5 | 459 | link_dirty(link); |
57bd6899 TG |
460 | } |
461 | ||
111bb8f9 TG |
462 | static int link_stop_clients(Link *link) { |
463 | int r = 0, k; | |
464 | ||
465 | assert(link); | |
466 | assert(link->manager); | |
467 | assert(link->manager->event); | |
468 | ||
469 | if (!link->network) | |
470 | return 0; | |
471 | ||
ba179154 | 472 | if (link->dhcp_client) { |
111bb8f9 | 473 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d LP |
474 | if (k < 0) |
475 | r = log_link_warning_errno(link, r, "Could not stop DHCPv4 client: %m"); | |
111bb8f9 TG |
476 | } |
477 | ||
ba179154 | 478 | if (link->ipv4ll) { |
111bb8f9 | 479 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d LP |
480 | if (k < 0) |
481 | r = log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m"); | |
dd43110f TG |
482 | } |
483 | ||
de1e9928 | 484 | if(link->ndisc_router_discovery) { |
1873a3d3 PF |
485 | if (link->dhcp6_client) { |
486 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
6a7a4e4d LP |
487 | if (k < 0) |
488 | r = log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); | |
1873a3d3 | 489 | } |
4138fb2c | 490 | |
de1e9928 | 491 | k = sd_ndisc_stop(link->ndisc_router_discovery); |
6a7a4e4d LP |
492 | if (k < 0) |
493 | r = log_link_warning_errno(link, r, "Could not stop ICMPv6 router discovery: %m"); | |
4138fb2c PF |
494 | } |
495 | ||
ce43e484 | 496 | if (link->lldp) { |
ce43e484 | 497 | k = sd_lldp_stop(link->lldp); |
6a7a4e4d LP |
498 | if (k < 0) |
499 | r = log_link_warning_errno(link, r, "Could not stop LLDP: %m"); | |
ce43e484 SS |
500 | } |
501 | ||
111bb8f9 TG |
502 | return r; |
503 | } | |
504 | ||
b22d8a00 | 505 | void link_enter_failed(Link *link) { |
ef1ba606 | 506 | assert(link); |
f882c247 | 507 | |
370e9930 | 508 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
509 | return; |
510 | ||
6a7a4e4d | 511 | log_link_warning(link, "Failed"); |
449f7554 | 512 | |
e331e246 | 513 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 514 | |
111bb8f9 TG |
515 | link_stop_clients(link); |
516 | ||
84de38c5 | 517 | link_dirty(link); |
f882c247 TG |
518 | } |
519 | ||
4f434938 LP |
520 | static Address* link_find_dhcp_server_address(Link *link) { |
521 | Address *address; | |
522 | ||
523 | assert(link); | |
524 | assert(link->network); | |
525 | ||
d4cdbea5 | 526 | /* The first statically configured address if there is any */ |
4f434938 LP |
527 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
528 | ||
529 | if (address->family != AF_INET) | |
530 | continue; | |
531 | ||
af93291c | 532 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
533 | continue; |
534 | ||
535 | return address; | |
536 | } | |
537 | ||
538 | /* If that didn't work, find a suitable address we got from the pool */ | |
539 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
540 | if (address->family != AF_INET) | |
541 | continue; | |
542 | ||
543 | return address; | |
544 | } | |
545 | ||
546 | return NULL; | |
547 | } | |
548 | ||
dd43110f | 549 | static int link_enter_configured(Link *link) { |
dd43110f TG |
550 | assert(link); |
551 | assert(link->network); | |
552 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
553 | ||
6a7a4e4d | 554 | log_link_info(link, "Configured"); |
dd43110f | 555 | |
e331e246 | 556 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 557 | |
84de38c5 | 558 | link_dirty(link); |
dd43110f TG |
559 | |
560 | return 0; | |
561 | } | |
562 | ||
8012cd39 TG |
563 | void link_check_ready(Link *link) { |
564 | Address *a; | |
565 | Iterator i; | |
566 | ||
3c9b8860 | 567 | assert(link); |
adda1ed9 TG |
568 | |
569 | if (!link->network) | |
570 | return; | |
3c9b8860 TG |
571 | |
572 | if (!link->static_configured) | |
573 | return; | |
574 | ||
78c958f8 | 575 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
576 | if (!link->ipv4ll_address || |
577 | !link->ipv4ll_route) | |
578 | return; | |
579 | ||
3ada37a2 PF |
580 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
581 | !link->dhcp4_configured) || | |
582 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
583 | !link->dhcp6_configured) || | |
584 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
585 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
18d29550 PF |
586 | return; |
587 | ||
8012cd39 TG |
588 | SET_FOREACH(a, link->addresses, i) |
589 | if (!address_is_ready(a)) | |
590 | return; | |
591 | ||
9fdaa992 TG |
592 | if (link->state != LINK_STATE_CONFIGURED) |
593 | link_enter_configured(link); | |
3c9b8860 TG |
594 | |
595 | return; | |
596 | } | |
597 | ||
1c4baffc | 598 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 599 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
600 | int r; |
601 | ||
3c9b8860 | 602 | assert(link->link_messages > 0); |
370e9930 TG |
603 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
604 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
605 | LINK_STATE_LINGER)); | |
f882c247 | 606 | |
3c9b8860 | 607 | link->link_messages --; |
f882c247 | 608 | |
77a008c0 | 609 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
610 | return 1; |
611 | ||
1c4baffc | 612 | r = sd_netlink_message_get_errno(m); |
c166a070 | 613 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 614 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 615 | |
3c9b8860 | 616 | if (link->link_messages == 0) { |
6a7a4e4d | 617 | log_link_debug(link, "Routes set"); |
3c9b8860 | 618 | link->static_configured = true; |
8012cd39 | 619 | link_check_ready(link); |
dd3efc09 | 620 | } |
f882c247 TG |
621 | |
622 | return 1; | |
623 | } | |
624 | ||
625 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 626 | Route *rt; |
f882c247 TG |
627 | int r; |
628 | ||
629 | assert(link); | |
630 | assert(link->network); | |
ef1ba606 | 631 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 632 | |
e331e246 | 633 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 634 | |
3d3d4255 | 635 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 636 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 637 | if (r < 0) { |
6a7a4e4d | 638 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 639 | link_enter_failed(link); |
a6cc569e TG |
640 | return r; |
641 | } | |
642 | ||
3c9b8860 | 643 | link->link_messages ++; |
8ddbeaa2 | 644 | } |
f5be5601 | 645 | |
3c9b8860 TG |
646 | if (link->link_messages == 0) { |
647 | link->static_configured = true; | |
8012cd39 | 648 | link_check_ready(link); |
431ca2ce | 649 | } else |
6a7a4e4d | 650 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
651 | |
652 | return 0; | |
653 | } | |
654 | ||
91b5f997 | 655 | int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 656 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
657 | int r; |
658 | ||
659 | assert(m); | |
660 | assert(link); | |
661 | assert(link->ifname); | |
662 | ||
5da8149f | 663 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
664 | return 1; |
665 | ||
1c4baffc | 666 | r = sd_netlink_message_get_errno(m); |
b90b025a | 667 | if (r < 0 && r != -ESRCH) |
a2fae7bb | 668 | log_link_warning_errno(link, r, "Could not drop route: %m"); |
5c1d3fc9 | 669 | |
5bdd314c | 670 | return 1; |
5c1d3fc9 UTL |
671 | } |
672 | ||
1c4baffc | 673 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 674 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
675 | int r; |
676 | ||
4958aee4 | 677 | assert(rtnl); |
f5be5601 TG |
678 | assert(m); |
679 | assert(link); | |
680 | assert(link->ifname); | |
3c9b8860 | 681 | assert(link->link_messages > 0); |
370e9930 TG |
682 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
683 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 684 | |
3c9b8860 | 685 | link->link_messages --; |
f882c247 | 686 | |
5da8149f | 687 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
688 | return 1; |
689 | ||
1c4baffc | 690 | r = sd_netlink_message_get_errno(m); |
c166a070 | 691 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 692 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 693 | else if (r >= 0) |
200a0868 | 694 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 695 | |
3c9b8860 | 696 | if (link->link_messages == 0) { |
6a7a4e4d | 697 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 698 | link_enter_set_routes(link); |
dd3efc09 | 699 | } |
f882c247 TG |
700 | |
701 | return 1; | |
702 | } | |
703 | ||
4f5f911e LP |
704 | static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
705 | _cleanup_free_ struct in_addr *addresses = NULL; | |
706 | size_t n_addresses = 0, n_allocated = 0; | |
707 | char **a; | |
708 | ||
709 | log_debug("Copying DNS server information from %s", link->ifname); | |
710 | ||
711 | if (!link->network) | |
712 | return 0; | |
713 | ||
714 | STRV_FOREACH(a, link->network->dns) { | |
715 | struct in_addr ia; | |
716 | ||
717 | /* Only look for IPv4 addresses */ | |
718 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
719 | continue; | |
720 | ||
721 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
722 | return log_oom(); | |
723 | ||
724 | addresses[n_addresses++] = ia; | |
725 | } | |
726 | ||
727 | if (link->network->dhcp_dns && | |
728 | link->dhcp_lease) { | |
729 | const struct in_addr *da = NULL; | |
730 | int n; | |
731 | ||
732 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
733 | if (n > 0) { | |
734 | ||
735 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
736 | return log_oom(); | |
737 | ||
738 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
739 | n_addresses += n; | |
740 | } | |
741 | } | |
742 | ||
743 | if (n_addresses <= 0) | |
744 | return 0; | |
745 | ||
746 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
747 | } | |
748 | ||
749 | static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { | |
750 | _cleanup_free_ struct in_addr *addresses = NULL; | |
751 | size_t n_addresses = 0, n_allocated = 0; | |
752 | char **a; | |
753 | ||
754 | if (!link->network) | |
755 | return 0; | |
756 | ||
757 | log_debug("Copying NTP server information from %s", link->ifname); | |
758 | ||
759 | STRV_FOREACH(a, link->network->ntp) { | |
760 | struct in_addr ia; | |
761 | ||
762 | /* Only look for IPv4 addresses */ | |
763 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
764 | continue; | |
765 | ||
766 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
767 | return log_oom(); | |
768 | ||
769 | addresses[n_addresses++] = ia; | |
770 | } | |
771 | ||
772 | if (link->network->dhcp_ntp && | |
773 | link->dhcp_lease) { | |
774 | const struct in_addr *da = NULL; | |
775 | int n; | |
776 | ||
777 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
778 | if (n > 0) { | |
779 | ||
780 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
781 | return log_oom(); | |
782 | ||
783 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
784 | n_addresses += n; | |
785 | } | |
786 | } | |
787 | ||
788 | if (n_addresses <= 0) | |
789 | return 0; | |
790 | ||
791 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
792 | } | |
793 | ||
f882c247 | 794 | static int link_enter_set_addresses(Link *link) { |
a6cc569e | 795 | Address *ad; |
f882c247 TG |
796 | int r; |
797 | ||
798 | assert(link); | |
799 | assert(link->network); | |
f5be5601 | 800 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 801 | |
e331e246 | 802 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 803 | |
3d3d4255 | 804 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
66669078 | 805 | r = address_configure(ad, link, &address_handler, false); |
dd3efc09 | 806 | if (r < 0) { |
5a8bcb67 | 807 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
808 | link_enter_failed(link); |
809 | return r; | |
810 | } | |
811 | ||
3c9b8860 | 812 | link->link_messages ++; |
f882c247 TG |
813 | } |
814 | ||
d4cdbea5 TG |
815 | /* now that we can figure out a default address for the dhcp server, |
816 | start it */ | |
817 | if (link_dhcp4_server_enabled(link)) { | |
d4cdbea5 | 818 | Address *address; |
4f5f911e LP |
819 | Link *uplink = NULL; |
820 | bool acquired_uplink = false; | |
d4cdbea5 TG |
821 | |
822 | address = link_find_dhcp_server_address(link); | |
823 | if (!address) { | |
6a7a4e4d | 824 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
825 | link_enter_failed(link); |
826 | return 0; | |
827 | } | |
828 | ||
61986155 | 829 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
830 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
831 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
832 | if (r < 0) |
833 | return r; | |
834 | ||
835 | /* TODO: | |
836 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
837 | &main_address->in_addr.in); | |
838 | if (r < 0) | |
839 | return r; | |
d4cdbea5 TG |
840 | */ |
841 | ||
586ac6f7 LP |
842 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
843 | r = sd_dhcp_server_set_max_lease_time( | |
844 | link->dhcp_server, | |
845 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
846 | if (r < 0) | |
847 | return r; | |
848 | } | |
849 | ||
850 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
851 | r = sd_dhcp_server_set_default_lease_time( | |
852 | link->dhcp_server, | |
853 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
854 | if (r < 0) | |
855 | return r; | |
856 | } | |
857 | ||
1a04db0f LP |
858 | if (link->network->dhcp_server_emit_dns) { |
859 | ||
4f5f911e | 860 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 861 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
862 | else { |
863 | uplink = manager_find_uplink(link->manager, link); | |
864 | acquired_uplink = true; | |
865 | ||
866 | if (!uplink) { | |
867 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
868 | r = 0; | |
869 | } else | |
870 | r = link_push_dns_to_dhcp_server(uplink, link->dhcp_server); | |
871 | } | |
872 | if (r < 0) | |
873 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
874 | } |
875 | ||
876 | ||
877 | if (link->network->dhcp_server_emit_ntp) { | |
878 | ||
4f5f911e | 879 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 880 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
881 | else { |
882 | if (!acquired_uplink) | |
883 | uplink = manager_find_uplink(link->manager, link); | |
884 | ||
885 | if (!uplink) { | |
886 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
887 | r = 0; | |
888 | } else | |
889 | r = link_push_ntp_to_dhcp_server(uplink, link->dhcp_server); | |
890 | ||
891 | } | |
892 | if (r < 0) | |
893 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
894 | } |
895 | ||
8eb9058d LP |
896 | if (link->network->dhcp_server_emit_timezone) { |
897 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 898 | const char *tz = NULL; |
8eb9058d LP |
899 | |
900 | if (link->network->dhcp_server_timezone) | |
901 | tz = link->network->dhcp_server_timezone; | |
902 | else { | |
903 | r = get_timezone(&buffer); | |
904 | if (r < 0) | |
905 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
906 | else | |
907 | tz = buffer; | |
908 | } | |
909 | ||
910 | if (tz) { | |
911 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
912 | if (r < 0) | |
913 | return r; | |
914 | } | |
915 | } | |
916 | ||
d4cdbea5 TG |
917 | r = sd_dhcp_server_start(link->dhcp_server); |
918 | if (r < 0) { | |
6a7a4e4d | 919 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
920 | |
921 | link_enter_failed(link); | |
922 | ||
923 | return 0; | |
924 | } | |
925 | ||
6a7a4e4d | 926 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
927 | } |
928 | ||
6a7a4e4d | 929 | if (link->link_messages == 0) |
431ca2ce | 930 | link_enter_set_routes(link); |
6a7a4e4d LP |
931 | else |
932 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 933 | |
f882c247 TG |
934 | return 0; |
935 | } | |
936 | ||
91b5f997 | 937 | int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 938 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
939 | int r; |
940 | ||
941 | assert(m); | |
942 | assert(link); | |
943 | assert(link->ifname); | |
944 | ||
5da8149f | 945 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
946 | return 1; |
947 | ||
1c4baffc | 948 | r = sd_netlink_message_get_errno(m); |
b90b025a | 949 | if (r < 0 && r != -EADDRNOTAVAIL) |
a2fae7bb | 950 | log_link_warning_errno(link, r, "Could not drop address: %m"); |
ff254138 | 951 | |
5bdd314c | 952 | return 1; |
ff254138 TG |
953 | } |
954 | ||
a245ced0 | 955 | static int link_set_bridge_fdb(Link *const link) { |
b98b483b AR |
956 | FdbEntry *fdb_entry; |
957 | int r = 0; | |
958 | ||
959 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
ea6ec096 | 960 | r = fdb_entry_configure(link, fdb_entry); |
b98b483b | 961 | if(r < 0) { |
6a7a4e4d | 962 | log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
b98b483b AR |
963 | break; |
964 | } | |
965 | } | |
966 | ||
967 | return r; | |
968 | } | |
969 | ||
1c4baffc | 970 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
971 | _cleanup_link_unref_ Link *link = userdata; |
972 | int r; | |
973 | ||
6a7a4e4d | 974 | log_link_debug(link, "Set link"); |
e1853b00 | 975 | |
1c4baffc | 976 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 977 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 978 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
979 | link_enter_failed(link); |
980 | return 1; | |
981 | } | |
982 | ||
983 | return 0; | |
984 | } | |
985 | ||
19070062 | 986 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
5da8149f | 987 | _cleanup_link_unref_ Link *link = userdata; |
21b80ad1 | 988 | const sd_bus_error *e; |
1346b1f0 | 989 | |
19070062 | 990 | assert(m); |
b226d99b TG |
991 | assert(link); |
992 | ||
5da8149f | 993 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 994 | return 1; |
370e9930 | 995 | |
21b80ad1 LP |
996 | e = sd_bus_message_get_error(m); |
997 | if (e) | |
998 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); | |
1346b1f0 TG |
999 | |
1000 | return 1; | |
1001 | } | |
1002 | ||
3c9b8860 | 1003 | int link_set_hostname(Link *link, const char *hostname) { |
21b80ad1 | 1004 | int r; |
1346b1f0 | 1005 | |
b226d99b TG |
1006 | assert(link); |
1007 | assert(link->manager); | |
1346b1f0 | 1008 | |
dce391e7 | 1009 | log_link_debug(link, "Setting transient hostname: '%s'", strna(hostname)); |
1346b1f0 | 1010 | |
3c9b8860 TG |
1011 | if (!link->manager->bus) { |
1012 | /* TODO: replace by assert when we can rely on kdbus */ | |
6a7a4e4d | 1013 | log_link_info(link, "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
1014 | return 0; |
1015 | } | |
1016 | ||
9c34154a | 1017 | r = sd_bus_call_method_async( |
b226d99b | 1018 | link->manager->bus, |
9c34154a | 1019 | NULL, |
1346b1f0 TG |
1020 | "org.freedesktop.hostname1", |
1021 | "/org/freedesktop/hostname1", | |
1022 | "org.freedesktop.hostname1", | |
9c34154a UTL |
1023 | "SetHostname", |
1024 | set_hostname_handler, | |
1025 | link, | |
1026 | "sb", | |
1027 | hostname, | |
1028 | false); | |
1346b1f0 | 1029 | |
6a7a4e4d LP |
1030 | if (r < 0) |
1031 | return log_link_error_errno(link, r, "Could not set transient hostname: %m"); | |
b226d99b TG |
1032 | |
1033 | link_ref(link); | |
1346b1f0 | 1034 | |
5da8149f | 1035 | return 0; |
1346b1f0 TG |
1036 | } |
1037 | ||
21b80ad1 LP |
1038 | static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
1039 | _cleanup_link_unref_ Link *link = userdata; | |
1040 | const sd_bus_error *e; | |
1041 | ||
1042 | assert(m); | |
1043 | assert(link); | |
1044 | ||
1045 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1046 | return 1; | |
1047 | ||
1048 | e = sd_bus_message_get_error(m); | |
1049 | if (e) | |
1050 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); | |
1051 | ||
1052 | return 1; | |
1053 | } | |
1054 | ||
64d6c229 | 1055 | int link_set_timezone(Link *link, const char *tz) { |
21b80ad1 LP |
1056 | int r; |
1057 | ||
1058 | assert(link); | |
1059 | assert(link->manager); | |
64d6c229 | 1060 | assert(tz); |
21b80ad1 | 1061 | |
64d6c229 | 1062 | log_link_debug(link, "Setting system timezone: '%s'", tz); |
21b80ad1 LP |
1063 | |
1064 | if (!link->manager->bus) { | |
1065 | log_link_info(link, "Not connected to system bus, ignoring timezone."); | |
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | r = sd_bus_call_method_async( | |
1070 | link->manager->bus, | |
1071 | NULL, | |
1072 | "org.freedesktop.timedate1", | |
1073 | "/org/freedesktop/timedate1", | |
1074 | "org.freedesktop.timedate1", | |
1075 | "SetTimezone", | |
1076 | set_timezone_handler, | |
1077 | link, | |
1078 | "sb", | |
64d6c229 | 1079 | tz, |
21b80ad1 LP |
1080 | false); |
1081 | if (r < 0) | |
1082 | return log_link_error_errno(link, r, "Could not set timezone: %m"); | |
1083 | ||
1084 | link_ref(link); | |
1085 | ||
1086 | return 0; | |
1087 | } | |
1088 | ||
1c4baffc | 1089 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1090 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
1091 | int r; |
1092 | ||
1093 | assert(m); | |
1094 | assert(link); | |
1095 | assert(link->ifname); | |
1096 | ||
5da8149f | 1097 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1098 | return 1; |
1099 | ||
1c4baffc | 1100 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 1101 | if (r < 0) |
a2fae7bb | 1102 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
4f882b2a TG |
1103 | |
1104 | return 1; | |
1105 | } | |
1106 | ||
3c9b8860 | 1107 | int link_set_mtu(Link *link, uint32_t mtu) { |
1c4baffc | 1108 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f882b2a TG |
1109 | int r; |
1110 | ||
1111 | assert(link); | |
1112 | assert(link->manager); | |
1113 | assert(link->manager->rtnl); | |
1114 | ||
6a7a4e4d | 1115 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1116 | |
6a7a4e4d LP |
1117 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1118 | if (r < 0) | |
1119 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1120 | |
1c4baffc | 1121 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1122 | if (r < 0) |
1123 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1124 | |
1c4baffc | 1125 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
1126 | if (r < 0) |
1127 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1128 | |
ae941762 | 1129 | link_ref(link); |
b226d99b | 1130 | |
4f882b2a TG |
1131 | return 0; |
1132 | } | |
1133 | ||
e1853b00 | 1134 | static int link_set_bridge(Link *link) { |
1c4baffc | 1135 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
e1853b00 SS |
1136 | int r; |
1137 | ||
1138 | assert(link); | |
1139 | assert(link->network); | |
1140 | ||
6a7a4e4d LP |
1141 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1142 | if (r < 0) | |
1143 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1144 | |
1145 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1146 | if (r < 0) |
1147 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1148 | |
1c4baffc | 1149 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1150 | if (r < 0) |
1151 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1152 | |
84c34096 | 1153 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, !link->network->use_bpdu); |
eb7ff4dd SS |
1154 | if (r < 0) |
1155 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1156 | ||
1157 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1158 | if (r < 0) | |
1159 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1160 | ||
1161 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1162 | if (r < 0) | |
1163 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1164 | ||
23da66bb | 1165 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, !link->network->allow_port_to_be_root); |
eb7ff4dd SS |
1166 | if (r < 0) |
1167 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
1168 | ||
1169 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1170 | if (r < 0) | |
1171 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
1172 | ||
e1853b00 | 1173 | if(link->network->cost != 0) { |
1c4baffc | 1174 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1175 | if (r < 0) |
1176 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 SS |
1177 | } |
1178 | ||
1c4baffc | 1179 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1180 | if (r < 0) |
1181 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1182 | |
1c4baffc | 1183 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
1184 | if (r < 0) |
1185 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1186 | |
1187 | link_ref(link); | |
1188 | ||
1189 | return r; | |
1190 | } | |
1191 | ||
49699bac SS |
1192 | static void lldp_handler(sd_lldp *lldp, int event, void *userdata) { |
1193 | Link *link = userdata; | |
1194 | int r; | |
1195 | ||
1196 | assert(link); | |
1197 | assert(link->network); | |
1198 | assert(link->manager); | |
1199 | ||
9ef61f2e DH |
1200 | switch (event) { |
1201 | case SD_LLDP_EVENT_UPDATE_INFO: | |
1202 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
1203 | if (r < 0) | |
1204 | log_link_warning_errno(link, r, "Could not save LLDP: %m"); | |
49699bac | 1205 | |
9ef61f2e DH |
1206 | break; |
1207 | default: | |
1208 | break; | |
1209 | } | |
49699bac SS |
1210 | } |
1211 | ||
ff254138 TG |
1212 | static int link_acquire_conf(Link *link) { |
1213 | int r; | |
1214 | ||
1215 | assert(link); | |
1216 | assert(link->network); | |
ff254138 TG |
1217 | assert(link->manager); |
1218 | assert(link->manager->event); | |
1219 | ||
78c958f8 | 1220 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1221 | assert(link->ipv4ll); |
ff254138 | 1222 | |
6a7a4e4d | 1223 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1224 | |
1225 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1226 | if (r < 0) |
1227 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1228 | } |
1229 | ||
78c958f8 | 1230 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1231 | assert(link->dhcp_client); |
ff254138 | 1232 | |
6a7a4e4d | 1233 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1234 | |
5c1d3fc9 | 1235 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1236 | if (r < 0) |
1237 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1238 | } |
ff254138 | 1239 | |
78c958f8 | 1240 | if (link_dhcp6_enabled(link)) { |
de1e9928 | 1241 | assert(link->ndisc_router_discovery); |
4138fb2c | 1242 | |
6a7a4e4d | 1243 | log_link_debug(link, "Discovering IPv6 routers"); |
4138fb2c | 1244 | |
de1e9928 | 1245 | r = sd_ndisc_router_discovery_start(link->ndisc_router_discovery); |
6a7a4e4d LP |
1246 | if (r < 0) |
1247 | return log_link_warning_errno(link, r, "Could not start IPv6 router discovery: %m"); | |
4138fb2c PF |
1248 | } |
1249 | ||
ce43e484 SS |
1250 | if (link_lldp_enabled(link)) { |
1251 | assert(link->lldp); | |
1252 | ||
1253 | log_link_debug(link, "Starting LLDP"); | |
1254 | ||
1255 | r = sd_lldp_start(link->lldp); | |
6a7a4e4d LP |
1256 | if (r < 0) |
1257 | return log_link_warning_errno(link, r, "Could not start LLDP: %m"); | |
ce43e484 SS |
1258 | } |
1259 | ||
ff254138 TG |
1260 | return 0; |
1261 | } | |
1262 | ||
a61bb41c | 1263 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1264 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1265 | ||
a61bb41c | 1266 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1267 | return true; |
1268 | ||
a61bb41c | 1269 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1270 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1271 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1272 | return true; |
1273 | ||
1274 | return false; | |
1275 | } | |
1276 | ||
1c4baffc | 1277 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1278 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1279 | int r; |
1280 | ||
1746cf2a TG |
1281 | assert(link); |
1282 | ||
5da8149f | 1283 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1284 | return 1; |
1285 | ||
1c4baffc | 1286 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
1287 | if (r < 0) |
1288 | /* we warn but don't fail the link, as it may be | |
1289 | brought up later */ | |
a2fae7bb | 1290 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1291 | |
f882c247 TG |
1292 | return 1; |
1293 | } | |
1294 | ||
1295 | static int link_up(Link *link) { | |
1c4baffc | 1296 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
5c3072ea | 1297 | uint8_t ipv6ll_mode; |
f579559b TG |
1298 | int r; |
1299 | ||
f882c247 | 1300 | assert(link); |
c106cc36 | 1301 | assert(link->network); |
f882c247 TG |
1302 | assert(link->manager); |
1303 | assert(link->manager->rtnl); | |
1304 | ||
6a7a4e4d | 1305 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1306 | |
6a7a4e4d LP |
1307 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1308 | if (r < 0) | |
1309 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1310 | |
5d4795f3 | 1311 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1312 | if (r < 0) |
1313 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1314 | |
c106cc36 | 1315 | if (link->network->mac) { |
1c4baffc | 1316 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1317 | if (r < 0) |
1318 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1319 | } |
1320 | ||
1321 | if (link->network->mtu) { | |
1c4baffc | 1322 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1323 | if (r < 0) |
1324 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1325 | } |
1326 | ||
1c4baffc | 1327 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1328 | if (r < 0) |
1329 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1330 | |
01d28f81 TG |
1331 | if (socket_ipv6_is_supported()) { |
1332 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ | |
1c4baffc | 1333 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1334 | if (r < 0) |
1335 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1336 | |
01d28f81 | 1337 | ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE; |
1c4baffc | 1338 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1339 | if (r < 0) |
1340 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1341 | |
01d28f81 | 1342 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1343 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1344 | if (r < 0) |
1345 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1346 | } | |
1347 | ||
1c4baffc | 1348 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1349 | if (r < 0) |
01d28f81 | 1350 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1351 | } |
d0d6a4cd | 1352 | |
1c4baffc | 1353 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1354 | if (r < 0) |
1355 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1356 | |
1c4baffc | 1357 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1358 | if (r < 0) |
1359 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1360 | |
b226d99b TG |
1361 | link_ref(link); |
1362 | ||
f882c247 TG |
1363 | return 0; |
1364 | } | |
1365 | ||
1c4baffc | 1366 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1367 | _cleanup_link_unref_ Link *link = userdata; |
1368 | int r; | |
1369 | ||
1370 | assert(link); | |
1371 | ||
1372 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1373 | return 1; | |
1374 | ||
1c4baffc | 1375 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1376 | if (r < 0) |
a2fae7bb | 1377 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d AR |
1378 | |
1379 | return 1; | |
1380 | } | |
1381 | ||
1382 | static int link_down(Link *link) { | |
1c4baffc | 1383 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
0d4ad91d AR |
1384 | int r; |
1385 | ||
1386 | assert(link); | |
1387 | assert(link->manager); | |
1388 | assert(link->manager->rtnl); | |
1389 | ||
6a7a4e4d | 1390 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1391 | |
1392 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1393 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1394 | if (r < 0) |
1395 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1396 | |
1397 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1398 | if (r < 0) |
1399 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1400 | |
1c4baffc | 1401 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1402 | if (r < 0) |
1403 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1404 | |
1405 | link_ref(link); | |
1406 | ||
1407 | return 0; | |
1408 | } | |
1409 | ||
1410 | static int link_handle_bound_to_list(Link *link) { | |
1411 | Link *l; | |
1412 | Iterator i; | |
1413 | int r; | |
1414 | bool required_up = false; | |
1415 | bool link_is_up = false; | |
1416 | ||
1417 | assert(link); | |
1418 | ||
1419 | if (hashmap_isempty(link->bound_to_links)) | |
1420 | return 0; | |
1421 | ||
1422 | if (link->flags & IFF_UP) | |
1423 | link_is_up = true; | |
1424 | ||
1425 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1426 | if (link_has_carrier(l)) { | |
1427 | required_up = true; | |
1428 | break; | |
1429 | } | |
1430 | ||
1431 | if (!required_up && link_is_up) { | |
1432 | r = link_down(link); | |
1433 | if (r < 0) | |
1434 | return r; | |
1435 | } else if (required_up && !link_is_up) { | |
1436 | r = link_up(link); | |
1437 | if (r < 0) | |
1438 | return r; | |
1439 | } | |
1440 | ||
1441 | return 0; | |
1442 | } | |
1443 | ||
1444 | static int link_handle_bound_by_list(Link *link) { | |
1445 | Iterator i; | |
1446 | Link *l; | |
1447 | int r; | |
1448 | ||
1449 | assert(link); | |
1450 | ||
1451 | if (hashmap_isempty(link->bound_by_links)) | |
1452 | return 0; | |
1453 | ||
1454 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1455 | r = link_handle_bound_to_list(l); | |
1456 | if (r < 0) | |
1457 | return r; | |
1458 | } | |
1459 | ||
1460 | return 0; | |
1461 | } | |
1462 | ||
1463 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1464 | int r; | |
1465 | ||
1466 | assert(link); | |
1467 | assert(carrier); | |
1468 | ||
1469 | if (link == carrier) | |
1470 | return 0; | |
1471 | ||
1472 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1473 | return 0; | |
1474 | ||
1475 | r = hashmap_ensure_allocated(h, NULL); | |
1476 | if (r < 0) | |
1477 | return r; | |
1478 | ||
1479 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1480 | if (r < 0) | |
1481 | return r; | |
1482 | ||
1483 | return 0; | |
1484 | } | |
1485 | ||
1486 | static int link_new_bound_by_list(Link *link) { | |
1487 | Manager *m; | |
1488 | Link *carrier; | |
1489 | Iterator i; | |
1490 | int r; | |
1491 | bool list_updated = false; | |
1492 | ||
1493 | assert(link); | |
1494 | assert(link->manager); | |
1495 | ||
1496 | m = link->manager; | |
1497 | ||
1498 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1499 | if (!carrier->network) | |
1500 | continue; | |
1501 | ||
1502 | if (strv_isempty(carrier->network->bind_carrier)) | |
1503 | continue; | |
1504 | ||
1505 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1506 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1507 | if (r < 0) | |
1508 | return r; | |
1509 | ||
1510 | list_updated = true; | |
1511 | } | |
1512 | } | |
1513 | ||
1514 | if (list_updated) | |
84de38c5 | 1515 | link_dirty(link); |
0d4ad91d AR |
1516 | |
1517 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) { | |
1518 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); | |
1519 | if (r < 0) | |
1520 | return r; | |
1521 | ||
84de38c5 | 1522 | link_dirty(carrier); |
0d4ad91d AR |
1523 | } |
1524 | ||
1525 | return 0; | |
1526 | } | |
1527 | ||
1528 | static int link_new_bound_to_list(Link *link) { | |
1529 | Manager *m; | |
1530 | Link *carrier; | |
1531 | Iterator i; | |
1532 | int r; | |
1533 | bool list_updated = false; | |
1534 | ||
1535 | assert(link); | |
1536 | assert(link->manager); | |
1537 | ||
1538 | if (!link->network) | |
1539 | return 0; | |
1540 | ||
1541 | if (strv_isempty(link->network->bind_carrier)) | |
1542 | return 0; | |
1543 | ||
1544 | m = link->manager; | |
1545 | ||
1546 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1547 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1548 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1549 | if (r < 0) | |
1550 | return r; | |
1551 | ||
1552 | list_updated = true; | |
1553 | } | |
1554 | } | |
1555 | ||
1556 | if (list_updated) | |
84de38c5 | 1557 | link_dirty(link); |
0d4ad91d AR |
1558 | |
1559 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1560 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1561 | if (r < 0) | |
1562 | return r; | |
1563 | ||
84de38c5 | 1564 | link_dirty(carrier); |
0d4ad91d AR |
1565 | } |
1566 | ||
1567 | return 0; | |
1568 | } | |
1569 | ||
1570 | static int link_new_carrier_maps(Link *link) { | |
1571 | int r; | |
1572 | ||
1573 | r = link_new_bound_by_list(link); | |
1574 | if (r < 0) | |
1575 | return r; | |
1576 | ||
1577 | r = link_handle_bound_by_list(link); | |
1578 | if (r < 0) | |
1579 | return r; | |
1580 | ||
1581 | r = link_new_bound_to_list(link); | |
1582 | if (r < 0) | |
1583 | return r; | |
1584 | ||
1585 | r = link_handle_bound_to_list(link); | |
1586 | if (r < 0) | |
1587 | return r; | |
1588 | ||
1589 | return 0; | |
1590 | } | |
1591 | ||
1592 | static void link_free_bound_to_list(Link *link) { | |
1593 | Link *bound_to; | |
1594 | Iterator i; | |
1595 | ||
1596 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
1597 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
1598 | ||
1599 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1600 | link_dirty(bound_to); |
0d4ad91d AR |
1601 | } |
1602 | ||
1603 | return; | |
1604 | } | |
1605 | ||
1606 | static void link_free_bound_by_list(Link *link) { | |
1607 | Link *bound_by; | |
1608 | Iterator i; | |
1609 | ||
1610 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
1611 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
1612 | ||
1613 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1614 | link_dirty(bound_by); |
0d4ad91d AR |
1615 | link_handle_bound_to_list(bound_by); |
1616 | } | |
1617 | } | |
1618 | ||
1619 | return; | |
1620 | } | |
1621 | ||
1622 | static void link_free_carrier_maps(Link *link) { | |
1623 | bool list_updated = false; | |
1624 | ||
1625 | assert(link); | |
1626 | ||
1627 | if (!hashmap_isempty(link->bound_to_links)) { | |
1628 | link_free_bound_to_list(link); | |
1629 | list_updated = true; | |
1630 | } | |
1631 | ||
1632 | if (!hashmap_isempty(link->bound_by_links)) { | |
1633 | link_free_bound_by_list(link); | |
1634 | list_updated = true; | |
1635 | } | |
1636 | ||
1637 | if (list_updated) | |
84de38c5 | 1638 | link_dirty(link); |
0d4ad91d AR |
1639 | |
1640 | return; | |
1641 | } | |
1642 | ||
1643 | void link_drop(Link *link) { | |
1644 | if (!link || link->state == LINK_STATE_LINGER) | |
1645 | return; | |
1646 | ||
1647 | link_set_state(link, LINK_STATE_LINGER); | |
1648 | ||
1649 | link_free_carrier_maps(link); | |
1650 | ||
6a7a4e4d | 1651 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1652 | |
84de38c5 | 1653 | (void)unlink(link->state_file); |
0d4ad91d AR |
1654 | link_unref(link); |
1655 | ||
1656 | return; | |
1657 | } | |
1658 | ||
3f265037 | 1659 | static int link_joined(Link *link) { |
f882c247 TG |
1660 | int r; |
1661 | ||
ef1ba606 | 1662 | assert(link); |
f5be5601 | 1663 | assert(link->network); |
dd3efc09 | 1664 | |
0d4ad91d AR |
1665 | if (!hashmap_isempty(link->bound_to_links)) { |
1666 | r = link_handle_bound_to_list(link); | |
1667 | if (r < 0) | |
1668 | return r; | |
1669 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1670 | r = link_up(link); |
1671 | if (r < 0) { | |
1672 | link_enter_failed(link); | |
1673 | return r; | |
1674 | } | |
ef1ba606 | 1675 | } |
f882c247 | 1676 | |
e1853b00 SS |
1677 | if(link->network->bridge) { |
1678 | r = link_set_bridge(link); | |
6a7a4e4d LP |
1679 | if (r < 0) |
1680 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
1681 | } |
1682 | ||
fb6730c4 | 1683 | return link_enter_set_addresses(link); |
02b59d57 TG |
1684 | } |
1685 | ||
62e2d5bb | 1686 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1687 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1688 | int r; |
1689 | ||
1746cf2a | 1690 | assert(link); |
ef1ba606 | 1691 | assert(link->network); |
02b59d57 | 1692 | |
52433f6b TG |
1693 | link->enslaving --; |
1694 | ||
5da8149f | 1695 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1696 | return 1; |
1697 | ||
1c4baffc | 1698 | r = sd_netlink_message_get_errno(m); |
856f962c | 1699 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 1700 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
1701 | link_enter_failed(link); |
1702 | return 1; | |
ba179154 | 1703 | } else |
6a7a4e4d | 1704 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 1705 | |
856f962c | 1706 | if (link->enslaving <= 0) |
3f265037 | 1707 | link_joined(link); |
02b59d57 TG |
1708 | |
1709 | return 1; | |
1710 | } | |
1711 | ||
3f265037 | 1712 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1713 | NetDev *netdev; |
672682a6 | 1714 | Iterator i; |
02b59d57 TG |
1715 | int r; |
1716 | ||
1717 | assert(link); | |
1718 | assert(link->network); | |
8434fd5c | 1719 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1720 | |
e331e246 | 1721 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 1722 | |
84de38c5 | 1723 | link_dirty(link); |
fe8db0c5 | 1724 | |
7951dea2 SS |
1725 | if (!link->network->bridge && |
1726 | !link->network->bond && | |
6a0a2f86 | 1727 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1728 | return link_joined(link); |
02b59d57 | 1729 | |
d9c67ea1 | 1730 | if (link->network->bond) { |
f2341e0a LP |
1731 | log_struct(LOG_DEBUG, |
1732 | LOG_LINK_INTERFACE(link), | |
1733 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1734 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
1735 | NULL); | |
1736 | ||
1737 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 1738 | if (r < 0) { |
f2341e0a LP |
1739 | log_struct_errno(LOG_WARNING, r, |
1740 | LOG_LINK_INTERFACE(link), | |
1741 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1742 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
1743 | NULL); | |
1744 | ||
52433f6b TG |
1745 | link_enter_failed(link); |
1746 | return r; | |
1747 | } | |
1748 | ||
0ad6148e MO |
1749 | link->enslaving ++; |
1750 | } | |
1751 | ||
d9c67ea1 | 1752 | if (link->network->bridge) { |
f2341e0a LP |
1753 | log_struct(LOG_DEBUG, |
1754 | LOG_LINK_INTERFACE(link), | |
1755 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1756 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
1757 | NULL); | |
1758 | ||
1759 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 1760 | if (r < 0) { |
f2341e0a LP |
1761 | log_struct_errno(LOG_WARNING, r, |
1762 | LOG_LINK_INTERFACE(link), | |
1763 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1764 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
1765 | NULL), | |
0ad6148e MO |
1766 | link_enter_failed(link); |
1767 | return r; | |
1768 | } | |
1769 | ||
52433f6b TG |
1770 | link->enslaving ++; |
1771 | } | |
1772 | ||
6a0a2f86 | 1773 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 1774 | |
f2341e0a LP |
1775 | log_struct(LOG_DEBUG, |
1776 | LOG_LINK_INTERFACE(link), | |
1777 | LOG_NETDEV_INTERFACE(netdev), | |
1778 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
1779 | NULL); | |
1780 | ||
1781 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 1782 | if (r < 0) { |
f2341e0a LP |
1783 | log_struct_errno(LOG_WARNING, r, |
1784 | LOG_LINK_INTERFACE(link), | |
1785 | LOG_NETDEV_INTERFACE(netdev), | |
1786 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
1787 | NULL); | |
326cb406 SS |
1788 | link_enter_failed(link); |
1789 | return r; | |
1790 | } | |
1791 | ||
326cb406 SS |
1792 | link->enslaving ++; |
1793 | } | |
1794 | ||
ef1ba606 TG |
1795 | return 0; |
1796 | } | |
1797 | ||
769d324c | 1798 | static int link_set_ipv4_forward(Link *link) { |
15dee3f0 | 1799 | const char *p = NULL, *v; |
5a8bcb67 LP |
1800 | int r; |
1801 | ||
15dee3f0 LP |
1802 | if (link->flags & IFF_LOOPBACK) |
1803 | return 0; | |
1804 | ||
8add5f79 NO |
1805 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1806 | return 0; | |
1807 | ||
63c372cb | 1808 | p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1809 | v = one_zero(link_ipv4_forward_enabled(link)); |
1810 | ||
4c1fc3e4 | 1811 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1812 | if (r < 0) { |
1813 | /* If the right value is set anyway, don't complain */ | |
1814 | if (verify_one_line_file(p, v) > 0) | |
1815 | return 0; | |
1816 | ||
43c6d5ab | 1817 | log_link_warning_errno(link, r, "Cannot configure IPv4 forwarding for interface %s: %m", link->ifname); |
15dee3f0 | 1818 | } |
43c6d5ab | 1819 | |
769d324c LP |
1820 | return 0; |
1821 | } | |
1822 | ||
1823 | static int link_set_ipv6_forward(Link *link) { | |
15dee3f0 | 1824 | const char *p = NULL, *v = NULL; |
769d324c LP |
1825 | int r; |
1826 | ||
fe027299 LP |
1827 | /* Make this a NOP if IPv6 is not available */ |
1828 | if (!socket_ipv6_is_supported()) | |
1829 | return 0; | |
1830 | ||
15dee3f0 LP |
1831 | if (link->flags & IFF_LOOPBACK) |
1832 | return 0; | |
1833 | ||
8add5f79 NO |
1834 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1835 | return 0; | |
1836 | ||
63c372cb | 1837 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1838 | v = one_zero(link_ipv6_forward_enabled(link)); |
1839 | ||
4c1fc3e4 | 1840 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1841 | if (r < 0) { |
1842 | /* If the right value is set anyway, don't complain */ | |
1843 | if (verify_one_line_file(p, v) > 0) | |
1844 | return 0; | |
1845 | ||
769d324c | 1846 | log_link_warning_errno(link, r, "Cannot configure IPv6 forwarding for interface: %m"); |
15dee3f0 | 1847 | } |
5a8bcb67 LP |
1848 | |
1849 | return 0; | |
1850 | } | |
1851 | ||
49092e22 | 1852 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 LP |
1853 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; |
1854 | IPv6PrivacyExtensions s; | |
49092e22 SS |
1855 | const char *p = NULL; |
1856 | int r; | |
1857 | ||
1858 | /* Make this a NOP if IPv6 is not available */ | |
1859 | if (!socket_ipv6_is_supported()) | |
1860 | return 0; | |
1861 | ||
1f0d9695 LP |
1862 | s = link_ipv6_privacy_extensions(link); |
1863 | if (s == _IPV6_PRIVACY_EXTENSIONS_INVALID) | |
49092e22 SS |
1864 | return 0; |
1865 | ||
1866 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
1867 | xsprintf(buf, "%u", link->network->ipv6_privacy_extensions); | |
1868 | ||
4c1fc3e4 | 1869 | r = write_string_file(p, buf, 0); |
1f0d9695 LP |
1870 | if (r < 0) { |
1871 | /* If the right value is set anyway, don't complain */ | |
1872 | if (verify_one_line_file(p, buf) > 0) | |
1873 | return 0; | |
1874 | ||
49092e22 | 1875 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
1f0d9695 | 1876 | } |
49092e22 SS |
1877 | |
1878 | return 0; | |
1879 | } | |
1880 | ||
4f2e437a SS |
1881 | static int link_set_ipv6_accept_ra(Link *link) { |
1882 | const char *p = NULL, *v = NULL; | |
4f2e437a SS |
1883 | int r; |
1884 | ||
1885 | /* Make this a NOP if IPv6 is not available */ | |
1886 | if (!socket_ipv6_is_supported()) | |
1887 | return 0; | |
1888 | ||
1889 | if (link->flags & IFF_LOOPBACK) | |
1890 | return 0; | |
1891 | ||
6a512301 GM |
1892 | /* If unset use system default (enabled if local forwarding is disabled. |
1893 | * disabled if local forwarding is enabled). | |
1894 | * If set, ignore or enforce RA independent of local forwarding state. | |
4f2e437a | 1895 | */ |
ebf98081 | 1896 | if (link->network->ipv6_accept_ra < 0) |
6a512301 GM |
1897 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ |
1898 | v = "1"; | |
ebf98081 | 1899 | else if (link->network->ipv6_accept_ra > 0) |
6a512301 GM |
1900 | /* "2" means accept RA even if ip_forward is enabled */ |
1901 | v = "2"; | |
ebf98081 | 1902 | else |
6a512301 GM |
1903 | /* "0" means ignore RA */ |
1904 | v = "0"; | |
ebf98081 | 1905 | |
4f2e437a | 1906 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); |
4f2e437a SS |
1907 | |
1908 | r = write_string_file(p, v, 0); | |
1909 | if (r < 0) { | |
1910 | /* If the right value is set anyway, don't complain */ | |
1911 | if (verify_one_line_file(p, v) > 0) | |
1912 | return 0; | |
1913 | ||
1914 | log_link_warning_errno(link, r, "Cannot configure IPv6 accept_ra for interface: %m"); | |
1915 | } | |
1916 | ||
1917 | return 0; | |
1918 | } | |
1919 | ||
8749cbcd SS |
1920 | static int link_set_ipv6_dad_transmits(Link *link) { |
1921 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; | |
1922 | const char *p = NULL; | |
1923 | int r; | |
1924 | ||
1925 | /* Make this a NOP if IPv6 is not available */ | |
1926 | if (!socket_ipv6_is_supported()) | |
1927 | return 0; | |
1928 | ||
1929 | if (link->flags & IFF_LOOPBACK) | |
1930 | return 0; | |
1931 | ||
1932 | if (link->network->ipv6_dad_transmits < 0) | |
1933 | return 0; | |
1934 | ||
1935 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); | |
1936 | ||
1937 | xsprintf(buf, "%u", link->network->ipv6_dad_transmits); | |
1938 | ||
1939 | r = write_string_file(p, buf, 0); | |
1940 | if (r < 0) { | |
1941 | /* If the right value is set anyway, don't complain */ | |
1942 | if (verify_one_line_file(p, buf) > 0) | |
1943 | return 0; | |
1944 | ||
1945 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); | |
1946 | } | |
1947 | ||
1948 | return 0; | |
1949 | } | |
1950 | ||
a748b692 | 1951 | static int link_configure(Link *link) { |
02b59d57 TG |
1952 | int r; |
1953 | ||
ef1ba606 | 1954 | assert(link); |
b22d8a00 | 1955 | assert(link->network); |
8434fd5c | 1956 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 1957 | |
b98b483b AR |
1958 | r = link_set_bridge_fdb(link); |
1959 | if (r < 0) | |
1960 | return r; | |
1961 | ||
769d324c LP |
1962 | r = link_set_ipv4_forward(link); |
1963 | if (r < 0) | |
1964 | return r; | |
1965 | ||
1966 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
1967 | if (r < 0) |
1968 | return r; | |
1969 | ||
49092e22 SS |
1970 | r = link_set_ipv6_privacy_extensions(link); |
1971 | if (r < 0) | |
1972 | return r; | |
1973 | ||
4f2e437a SS |
1974 | r = link_set_ipv6_accept_ra(link); |
1975 | if (r < 0) | |
1976 | return r; | |
1977 | ||
8749cbcd SS |
1978 | r = link_set_ipv6_dad_transmits(link); |
1979 | if (r < 0) | |
1980 | return r; | |
1981 | ||
78c958f8 | 1982 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 1983 | r = ipv4ll_configure(link); |
eb34d4af TG |
1984 | if (r < 0) |
1985 | return r; | |
1986 | } | |
1987 | ||
78c958f8 | 1988 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 1989 | r = dhcp4_configure(link); |
eb34d4af TG |
1990 | if (r < 0) |
1991 | return r; | |
eb34d4af TG |
1992 | } |
1993 | ||
78c958f8 | 1994 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
1995 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
1996 | if (r < 0) | |
1997 | return r; | |
1998 | ||
1999 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
2000 | if (r < 0) | |
2001 | return r; | |
dd43110f TG |
2002 | } |
2003 | ||
78c958f8 | 2004 | if (link_dhcp6_enabled(link)) { |
de1e9928 | 2005 | r = ndisc_configure(link); |
4138fb2c PF |
2006 | if (r < 0) |
2007 | return r; | |
2008 | } | |
2009 | ||
ce43e484 SS |
2010 | if (link_lldp_enabled(link)) { |
2011 | r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp); | |
2012 | if (r < 0) | |
2013 | return r; | |
2014 | ||
2015 | r = sd_lldp_attach_event(link->lldp, NULL, 0); | |
2016 | if (r < 0) | |
2017 | return r; | |
49699bac SS |
2018 | |
2019 | r = sd_lldp_set_callback(link->lldp, | |
2020 | lldp_handler, link); | |
2021 | if (r < 0) | |
2022 | return r; | |
ce43e484 SS |
2023 | } |
2024 | ||
a61bb41c | 2025 | if (link_has_carrier(link)) { |
1e9be60b TG |
2026 | r = link_acquire_conf(link); |
2027 | if (r < 0) | |
2028 | return r; | |
cc544d5f | 2029 | } |
1e9be60b | 2030 | |
3f265037 | 2031 | return link_enter_join_netdev(link); |
505f8da7 TG |
2032 | } |
2033 | ||
1c4baffc | 2034 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 2035 | void *userdata) { |
5da8149f | 2036 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 2037 | Network *network; |
505f8da7 TG |
2038 | int r; |
2039 | ||
2040 | assert(link); | |
2041 | assert(link->ifname); | |
2042 | assert(link->manager); | |
2043 | ||
8434fd5c | 2044 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 2045 | return 1; |
505f8da7 | 2046 | |
6a7a4e4d | 2047 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 2048 | |
0d4ad91d AR |
2049 | r = link_new_bound_by_list(link); |
2050 | if (r < 0) | |
2051 | return r; | |
2052 | ||
2053 | r = link_handle_bound_by_list(link); | |
2054 | if (r < 0) | |
2055 | return r; | |
2056 | ||
3c9b8860 TG |
2057 | r = network_get(link->manager, link->udev_device, link->ifname, |
2058 | &link->mac, &network); | |
57bd6899 TG |
2059 | if (r == -ENOENT) { |
2060 | link_enter_unmanaged(link); | |
5da8149f | 2061 | return 1; |
57bd6899 TG |
2062 | } else if (r < 0) |
2063 | return r; | |
505f8da7 | 2064 | |
bd2efe92 | 2065 | if (link->flags & IFF_LOOPBACK) { |
d0d6a4cd | 2066 | if (network->link_local != ADDRESS_FAMILY_NO) |
6a7a4e4d | 2067 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); |
78c958f8 | 2068 | |
cb9fc36a | 2069 | if (network->dhcp != ADDRESS_FAMILY_NO) |
6a7a4e4d | 2070 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); |
78c958f8 TG |
2071 | |
2072 | if (network->dhcp_server) | |
6a7a4e4d | 2073 | log_link_debug(link, "Ignoring DHCP server for loopback link"); |
bd2efe92 TG |
2074 | } |
2075 | ||
505f8da7 TG |
2076 | r = network_apply(link->manager, network, link); |
2077 | if (r < 0) | |
2078 | return r; | |
2079 | ||
0d4ad91d AR |
2080 | r = link_new_bound_to_list(link); |
2081 | if (r < 0) | |
2082 | return r; | |
2083 | ||
a748b692 TG |
2084 | r = link_configure(link); |
2085 | if (r < 0) | |
2086 | return r; | |
2087 | ||
5da8149f | 2088 | return 1; |
505f8da7 TG |
2089 | } |
2090 | ||
4f561e8e | 2091 | int link_initialized(Link *link, struct udev_device *device) { |
1c4baffc | 2092 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f561e8e TG |
2093 | int r; |
2094 | ||
2095 | assert(link); | |
2096 | assert(link->manager); | |
2097 | assert(link->manager->rtnl); | |
2098 | assert(device); | |
2099 | ||
8434fd5c | 2100 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2101 | return 0; |
2102 | ||
679b3605 TG |
2103 | if (link->udev_device) |
2104 | return 0; | |
2105 | ||
79008bdd | 2106 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
2107 | |
2108 | link->udev_device = udev_device_ref(device); | |
2109 | ||
3c9b8860 TG |
2110 | /* udev has initialized the link, but we don't know if we have yet |
2111 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2112 | * when it returns we know that the pending NEWLINKs have already been | |
2113 | * processed and that we are up-to-date */ | |
4f561e8e | 2114 | |
3c9b8860 TG |
2115 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2116 | link->ifindex); | |
4f561e8e TG |
2117 | if (r < 0) |
2118 | return r; | |
2119 | ||
1c4baffc | 2120 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 2121 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
2122 | if (r < 0) |
2123 | return r; | |
2124 | ||
5da8149f TG |
2125 | link_ref(link); |
2126 | ||
4f561e8e TG |
2127 | return 0; |
2128 | } | |
2129 | ||
1c4baffc | 2130 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
2131 | Link *link; |
2132 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
2133 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
2134 | int r; | |
2135 | ||
2136 | assert(m); | |
fbbeb65a | 2137 | assert(m->rtnl); |
505f8da7 TG |
2138 | assert(message); |
2139 | assert(ret); | |
2140 | ||
2141 | r = link_new(m, message, ret); | |
2142 | if (r < 0) | |
2143 | return r; | |
2144 | ||
2145 | link = *ret; | |
2146 | ||
6a7a4e4d | 2147 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2148 | |
75f86906 | 2149 | if (detect_container() <= 0) { |
505f8da7 | 2150 | /* not in a container, udev will be around */ |
ae06ab10 | 2151 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 2152 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
5c416fc4 TG |
2153 | if (!device) { |
2154 | r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
2155 | goto failed; | |
2156 | } | |
505f8da7 | 2157 | |
3c4cb064 | 2158 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 2159 | /* not yet ready */ |
79008bdd | 2160 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2161 | return 0; |
3c4cb064 | 2162 | } |
505f8da7 | 2163 | |
4f561e8e TG |
2164 | r = link_initialized(link, device); |
2165 | if (r < 0) | |
5c416fc4 | 2166 | goto failed; |
4f561e8e | 2167 | } else { |
5da8149f TG |
2168 | /* we are calling a callback directly, so must take a ref */ |
2169 | link_ref(link); | |
2170 | ||
4f561e8e TG |
2171 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
2172 | if (r < 0) | |
5c416fc4 | 2173 | goto failed; |
4f561e8e | 2174 | } |
505f8da7 | 2175 | |
a748b692 | 2176 | return 0; |
5c416fc4 TG |
2177 | failed: |
2178 | link_enter_failed(link); | |
2179 | return r; | |
a748b692 TG |
2180 | } |
2181 | ||
9c0a72f9 TG |
2182 | static int link_carrier_gained(Link *link) { |
2183 | int r; | |
2184 | ||
2185 | assert(link); | |
2186 | ||
2187 | if (link->network) { | |
2188 | r = link_acquire_conf(link); | |
2189 | if (r < 0) { | |
2190 | link_enter_failed(link); | |
2191 | return r; | |
2192 | } | |
2193 | } | |
2194 | ||
0d4ad91d AR |
2195 | r = link_handle_bound_by_list(link); |
2196 | if (r < 0) | |
2197 | return r; | |
2198 | ||
9c0a72f9 TG |
2199 | return 0; |
2200 | } | |
2201 | ||
2202 | static int link_carrier_lost(Link *link) { | |
2203 | int r; | |
2204 | ||
2205 | assert(link); | |
2206 | ||
2207 | r = link_stop_clients(link); | |
2208 | if (r < 0) { | |
2209 | link_enter_failed(link); | |
2210 | return r; | |
2211 | } | |
2212 | ||
0d4ad91d AR |
2213 | r = link_handle_bound_by_list(link); |
2214 | if (r < 0) | |
2215 | return r; | |
2216 | ||
9c0a72f9 TG |
2217 | return 0; |
2218 | } | |
2219 | ||
2220 | int link_carrier_reset(Link *link) { | |
2221 | int r; | |
2222 | ||
2223 | assert(link); | |
2224 | ||
2225 | if (link_has_carrier(link)) { | |
2226 | r = link_carrier_lost(link); | |
2227 | if (r < 0) | |
2228 | return r; | |
2229 | ||
2230 | r = link_carrier_gained(link); | |
2231 | if (r < 0) | |
2232 | return r; | |
2233 | ||
6a7a4e4d | 2234 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2235 | } |
2236 | ||
2237 | return 0; | |
2238 | } | |
2239 | ||
2240 | ||
1c4baffc | 2241 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 2242 | struct ether_addr mac; |
ca4e095a | 2243 | const char *ifname; |
afe7fd56 | 2244 | uint32_t mtu; |
a61bb41c | 2245 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
2246 | int r; |
2247 | ||
dd3efc09 | 2248 | assert(link); |
b8941f74 | 2249 | assert(link->ifname); |
22936833 TG |
2250 | assert(m); |
2251 | ||
7619683b TG |
2252 | if (link->state == LINK_STATE_LINGER) { |
2253 | link_ref(link); | |
6a7a4e4d | 2254 | log_link_info(link, "Link readded"); |
e331e246 | 2255 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
2256 | |
2257 | r = link_new_carrier_maps(link); | |
2258 | if (r < 0) | |
2259 | return r; | |
7619683b TG |
2260 | } |
2261 | ||
1c4baffc | 2262 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2263 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 2264 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 2265 | |
0d4ad91d AR |
2266 | link_free_carrier_maps(link); |
2267 | ||
2fc09a9c DM |
2268 | r = free_and_strdup(&link->ifname, ifname); |
2269 | if (r < 0) | |
2270 | return r; | |
0d4ad91d AR |
2271 | |
2272 | r = link_new_carrier_maps(link); | |
2273 | if (r < 0) | |
2274 | return r; | |
b8941f74 TG |
2275 | } |
2276 | ||
1c4baffc | 2277 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2278 | if (r >= 0 && mtu > 0) { |
2279 | link->mtu = mtu; | |
2280 | if (!link->original_mtu) { | |
2281 | link->original_mtu = mtu; | |
6a7a4e4d | 2282 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2283 | } |
2284 | ||
2285 | if (link->dhcp_client) { | |
3c9b8860 TG |
2286 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2287 | link->mtu); | |
afe7fd56 | 2288 | if (r < 0) { |
6a7a4e4d | 2289 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
2290 | return r; |
2291 | } | |
2292 | } | |
9842de0d | 2293 | } |
69629de9 | 2294 | |
e9189a1f TG |
2295 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2296 | set, simply ignore them. */ | |
1c4baffc | 2297 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2298 | if (r >= 0) { |
3c9b8860 TG |
2299 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2300 | ETH_ALEN)) { | |
c49b33ac | 2301 | |
3c9b8860 TG |
2302 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2303 | ETH_ALEN); | |
c49b33ac | 2304 | |
79008bdd | 2305 | log_link_debug(link, "MAC address: " |
20861203 TG |
2306 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
2307 | mac.ether_addr_octet[0], | |
2308 | mac.ether_addr_octet[1], | |
2309 | mac.ether_addr_octet[2], | |
2310 | mac.ether_addr_octet[3], | |
2311 | mac.ether_addr_octet[4], | |
2312 | mac.ether_addr_octet[5]); | |
c49b33ac | 2313 | |
20861203 TG |
2314 | if (link->ipv4ll) { |
2315 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
2316 | if (r < 0) |
2317 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 2318 | } |
c49b33ac | 2319 | |
20861203 | 2320 | if (link->dhcp_client) { |
3c9b8860 | 2321 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
2322 | (const uint8_t *) &link->mac, |
2323 | sizeof (link->mac), | |
2324 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2325 | if (r < 0) |
2326 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
c49b33ac | 2327 | } |
4138fb2c PF |
2328 | |
2329 | if (link->dhcp6_client) { | |
2330 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
2331 | (const uint8_t *) &link->mac, |
2332 | sizeof (link->mac), | |
2333 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2334 | if (r < 0) |
2335 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
4138fb2c | 2336 | } |
c49b33ac | 2337 | } |
4f882b2a TG |
2338 | } |
2339 | ||
a61bb41c TG |
2340 | had_carrier = link_has_carrier(link); |
2341 | ||
2342 | r = link_update_flags(link, m); | |
2343 | if (r < 0) | |
2344 | return r; | |
2345 | ||
2346 | carrier_gained = !had_carrier && link_has_carrier(link); | |
2347 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2348 | ||
2349 | if (carrier_gained) { | |
6a7a4e4d | 2350 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2351 | |
9c0a72f9 TG |
2352 | r = link_carrier_gained(link); |
2353 | if (r < 0) | |
2354 | return r; | |
a61bb41c | 2355 | } else if (carrier_lost) { |
6a7a4e4d | 2356 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2357 | |
9c0a72f9 TG |
2358 | r = link_carrier_lost(link); |
2359 | if (r < 0) | |
a61bb41c | 2360 | return r; |
9c0a72f9 | 2361 | |
a61bb41c TG |
2362 | } |
2363 | ||
2364 | return 0; | |
dd3efc09 | 2365 | } |
fe8db0c5 TG |
2366 | |
2367 | int link_save(Link *link) { | |
68a8723c | 2368 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2369 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2370 | const char *admin_state, *oper_state; |
e7780c8d TG |
2371 | Address *a; |
2372 | Iterator i; | |
fe8db0c5 TG |
2373 | int r; |
2374 | ||
2375 | assert(link); | |
2376 | assert(link->state_file); | |
68a8723c | 2377 | assert(link->lease_file); |
bbf7c048 TG |
2378 | assert(link->manager); |
2379 | ||
370e9930 TG |
2380 | if (link->state == LINK_STATE_LINGER) { |
2381 | unlink(link->state_file); | |
2382 | return 0; | |
2383 | } | |
2384 | ||
deb2e523 TG |
2385 | admin_state = link_state_to_string(link->state); |
2386 | assert(admin_state); | |
2387 | ||
e375dcde TG |
2388 | oper_state = link_operstate_to_string(link->operstate); |
2389 | assert(oper_state); | |
deb2e523 | 2390 | |
fe8db0c5 TG |
2391 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2392 | if (r < 0) | |
6a7a4e4d | 2393 | goto fail; |
fe8db0c5 TG |
2394 | |
2395 | fchmod(fileno(f), 0644); | |
2396 | ||
2397 | fprintf(f, | |
2398 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2399 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
2400 | "OPER_STATE=%s\n", |
2401 | admin_state, oper_state); | |
fe8db0c5 | 2402 | |
bcb7a07e | 2403 | if (link->network) { |
ea352b40 LP |
2404 | char **address, **domain; |
2405 | bool space; | |
07bdc70d PF |
2406 | sd_dhcp6_lease *dhcp6_lease = NULL; |
2407 | ||
2408 | if (link->dhcp6_client) { | |
2409 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, | |
2410 | &dhcp6_lease); | |
2411 | if (r < 0) | |
2412 | log_link_debug(link, "No DHCPv6 lease"); | |
2413 | } | |
b0e39c82 | 2414 | |
adc5b2e2 TG |
2415 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2416 | ||
b0e39c82 | 2417 | fputs("DNS=", f); |
ea352b40 LP |
2418 | space = false; |
2419 | STRV_FOREACH(address, link->network->dns) { | |
2420 | if (space) | |
2421 | fputc(' ', f); | |
2422 | fputs(*address, f); | |
2423 | space = true; | |
2424 | } | |
d5314fff | 2425 | |
b0e39c82 TG |
2426 | if (link->network->dhcp_dns && |
2427 | link->dhcp_lease) { | |
2428 | const struct in_addr *addresses; | |
2429 | ||
2430 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
2431 | if (r > 0) { | |
ea352b40 LP |
2432 | if (space) |
2433 | fputc(' ', f); | |
b0e39c82 | 2434 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2435 | space = true; |
2436 | } | |
2437 | } | |
2438 | ||
2439 | if (link->network->dhcp_dns && dhcp6_lease) { | |
2440 | struct in6_addr *in6_addrs; | |
2441 | ||
2442 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
2443 | if (r > 0) { | |
2444 | if (space) | |
2445 | fputc(' ', f); | |
2446 | serialize_in6_addrs(f, in6_addrs, r); | |
b0e39c82 TG |
2447 | } |
2448 | } | |
2449 | ||
b0e39c82 TG |
2450 | fputs("\n", f); |
2451 | ||
2452 | fprintf(f, "NTP="); | |
ea352b40 LP |
2453 | space = false; |
2454 | STRV_FOREACH(address, link->network->ntp) { | |
2455 | if (space) | |
2456 | fputc(' ', f); | |
2457 | fputs(*address, f); | |
2458 | space = true; | |
2459 | } | |
d5314fff | 2460 | |
b0e39c82 TG |
2461 | if (link->network->dhcp_ntp && |
2462 | link->dhcp_lease) { | |
2463 | const struct in_addr *addresses; | |
2464 | ||
2465 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
2466 | if (r > 0) { | |
ea352b40 LP |
2467 | if (space) |
2468 | fputc(' ', f); | |
b0e39c82 | 2469 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2470 | space = true; |
2471 | } | |
2472 | } | |
2473 | ||
2474 | if (link->network->dhcp_ntp && dhcp6_lease) { | |
2475 | struct in6_addr *in6_addrs; | |
2476 | char **hosts; | |
2477 | char **hostname; | |
2478 | ||
2479 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
2480 | &in6_addrs); | |
2481 | if (r > 0) { | |
2482 | if (space) | |
2483 | fputc(' ', f); | |
2484 | serialize_in6_addrs(f, in6_addrs, r); | |
2485 | space = true; | |
2486 | } | |
2487 | ||
2488 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
2489 | if (r > 0) { | |
2490 | STRV_FOREACH(hostname, hosts) { | |
2491 | if (space) | |
2492 | fputc(' ', f); | |
2493 | fputs(*hostname, f); | |
2494 | space = true; | |
2495 | } | |
b0e39c82 TG |
2496 | } |
2497 | } | |
2498 | ||
b0e39c82 | 2499 | fputs("\n", f); |
bd8f6538 | 2500 | |
6192b846 | 2501 | fprintf(f, "DOMAINS="); |
ea352b40 LP |
2502 | space = false; |
2503 | STRV_FOREACH(domain, link->network->domains) { | |
2504 | if (space) | |
2505 | fputc(' ', f); | |
2506 | fputs(*domain, f); | |
2507 | space = true; | |
2508 | } | |
d5314fff | 2509 | |
ad0734e8 | 2510 | if (link->network->dhcp_domains && |
9b4d1882 TG |
2511 | link->dhcp_lease) { |
2512 | const char *domainname; | |
2513 | ||
2514 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
6192b846 | 2515 | if (r >= 0) { |
ea352b40 LP |
2516 | if (space) |
2517 | fputc(' ', f); | |
6192b846 | 2518 | fputs(domainname, f); |
07bdc70d PF |
2519 | space = true; |
2520 | } | |
2521 | } | |
2522 | ||
2523 | if (link->network->dhcp_domains && dhcp6_lease) { | |
2524 | char **domains; | |
2525 | ||
2526 | r = sd_dhcp6_lease_get_domains(dhcp6_lease, &domains); | |
2527 | if (r >= 0) { | |
2528 | STRV_FOREACH(domain, domains) { | |
2529 | if (space) | |
2530 | fputc(' ', f); | |
2531 | fputs(*domain, f); | |
2532 | space = true; | |
2533 | } | |
6192b846 | 2534 | } |
9b4d1882 TG |
2535 | } |
2536 | ||
6192b846 TG |
2537 | fputs("\n", f); |
2538 | ||
67272d15 TG |
2539 | fprintf(f, "WILDCARD_DOMAIN=%s\n", |
2540 | yes_no(link->network->wildcard_domain)); | |
2541 | ||
3c9b8860 | 2542 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 2543 | resolve_support_to_string(link->network->llmnr)); |
e7780c8d TG |
2544 | |
2545 | fprintf(f, "ADDRESSES="); | |
2546 | space = false; | |
2547 | SET_FOREACH(a, link->addresses, i) { | |
2548 | _cleanup_free_ char *address_str = NULL; | |
2549 | ||
2550 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
2551 | if (r < 0) | |
2552 | goto fail; | |
2553 | ||
e7780c8d TG |
2554 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
2555 | space = true; | |
2556 | } | |
2557 | ||
2558 | fputs("\n", f); | |
bcb7a07e | 2559 | } |
7374f9d8 | 2560 | |
0d4ad91d AR |
2561 | if (!hashmap_isempty(link->bound_to_links)) { |
2562 | Link *carrier; | |
0d4ad91d AR |
2563 | bool space = false; |
2564 | ||
2565 | fputs("CARRIER_BOUND_TO=", f); | |
2566 | HASHMAP_FOREACH(carrier, link->bound_to_links, i) { | |
2567 | if (space) | |
2568 | fputc(' ', f); | |
2569 | fputs(carrier->ifname, f); | |
2570 | space = true; | |
2571 | } | |
2572 | ||
2573 | fputs("\n", f); | |
2574 | } | |
2575 | ||
2576 | if (!hashmap_isempty(link->bound_by_links)) { | |
2577 | Link *carrier; | |
0d4ad91d AR |
2578 | bool space = false; |
2579 | ||
2580 | fputs("CARRIER_BOUND_BY=", f); | |
0d4ad91d AR |
2581 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
2582 | if (space) | |
2583 | fputc(' ', f); | |
2584 | fputs(carrier->ifname, f); | |
2585 | space = true; | |
2586 | } | |
2587 | ||
2588 | fputs("\n", f); | |
2589 | } | |
2590 | ||
8eb9058d LP |
2591 | if (link->dhcp_lease) { |
2592 | const char *tz = NULL; | |
2593 | ||
2594 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); | |
2595 | if (r >= 0) | |
2596 | fprintf(f, "TIMEZONE=%s\n", tz); | |
2597 | } | |
2598 | ||
fe8db0c5 | 2599 | if (link->dhcp_lease) { |
d9876a52 TG |
2600 | assert(link->network); |
2601 | ||
bd91b83e | 2602 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 2603 | if (r < 0) |
c2d6bd61 | 2604 | goto fail; |
fe8db0c5 | 2605 | |
7374f9d8 | 2606 | fprintf(f, |
b0e39c82 TG |
2607 | "DHCP_LEASE=%s\n", |
2608 | link->lease_file); | |
deb2e523 | 2609 | } else |
68a8723c | 2610 | unlink(link->lease_file); |
fe8db0c5 | 2611 | |
49699bac SS |
2612 | if (link->lldp) { |
2613 | assert(link->network); | |
2614 | ||
2615 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
2616 | if (r < 0) | |
2617 | goto fail; | |
2618 | ||
2619 | fprintf(f, | |
2620 | "LLDP_FILE=%s\n", | |
2621 | link->lldp_file); | |
2622 | } else | |
2623 | unlink(link->lldp_file); | |
2624 | ||
c2d6bd61 LP |
2625 | r = fflush_and_check(f); |
2626 | if (r < 0) | |
2627 | goto fail; | |
fe8db0c5 | 2628 | |
c2d6bd61 | 2629 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 2630 | r = -errno; |
c2d6bd61 | 2631 | goto fail; |
fe8db0c5 TG |
2632 | } |
2633 | ||
c2d6bd61 | 2634 | return 0; |
dacd6cee | 2635 | |
c2d6bd61 | 2636 | fail: |
6a7a4e4d | 2637 | (void) unlink(link->state_file); |
6a7a4e4d LP |
2638 | if (temp_path) |
2639 | (void) unlink(temp_path); | |
2640 | ||
dacd6cee | 2641 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
2642 | } |
2643 | ||
84de38c5 TG |
2644 | /* The serialized state in /run is no longer up-to-date. */ |
2645 | void link_dirty(Link *link) { | |
2646 | int r; | |
2647 | ||
2648 | assert(link); | |
2649 | ||
2650 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); | |
2651 | if (r < 0) | |
2652 | /* allocation errors are ignored */ | |
2653 | return; | |
2654 | ||
2655 | r = set_put(link->manager->dirty_links, link); | |
2656 | if (r < 0) | |
2657 | /* allocation errors are ignored */ | |
2658 | return; | |
2659 | ||
2660 | link_ref(link); | |
2661 | } | |
2662 | ||
2663 | /* The serialized state in /run is up-to-date */ | |
2664 | void link_clean(Link *link) { | |
2665 | assert(link); | |
2666 | assert(link->manager); | |
2667 | ||
2668 | set_remove(link->manager->dirty_links, link); | |
2669 | link_unref(link); | |
2670 | } | |
2671 | ||
fe8db0c5 | 2672 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 2673 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
2674 | [LINK_STATE_ENSLAVING] = "configuring", |
2675 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
2676 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
2677 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 2678 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2679 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2680 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2681 | }; |
2682 | ||
2683 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
2684 | |
2685 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
2686 | [LINK_OPERSTATE_OFF] = "off", |
2687 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
2688 | [LINK_OPERSTATE_DORMANT] = "dormant", |
2689 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
2690 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
2691 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
2692 | }; | |
2693 | ||
2694 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |