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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" |
3ffd4af2 | 28 | #include "fd-util.h" |
cf1d700d TG |
29 | #include "fileio.h" |
30 | #include "netlink-util.h" | |
c6f7c917 | 31 | #include "network-internal.h" |
3ffd4af2 LP |
32 | #include "networkd-link.h" |
33 | #include "networkd-netdev.h" | |
cf1d700d TG |
34 | #include "set.h" |
35 | #include "socket-util.h" | |
8b43440b | 36 | #include "string-table.h" |
cf1d700d TG |
37 | #include "udev-util.h" |
38 | #include "util.h" | |
39 | #include "virt.h" | |
fc2f9534 | 40 | |
a97dcc12 | 41 | bool link_dhcp6_enabled(Link *link) { |
78c958f8 TG |
42 | if (link->flags & IFF_LOOPBACK) |
43 | return false; | |
44 | ||
45 | if (!link->network) | |
46 | return false; | |
47 | ||
e0ee46f2 | 48 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
49 | } |
50 | ||
a97dcc12 | 51 | bool link_dhcp4_enabled(Link *link) { |
78c958f8 TG |
52 | if (link->flags & IFF_LOOPBACK) |
53 | return false; | |
54 | ||
55 | if (!link->network) | |
56 | return false; | |
57 | ||
e0ee46f2 | 58 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
59 | } |
60 | ||
a97dcc12 | 61 | bool link_dhcp4_server_enabled(Link *link) { |
78c958f8 TG |
62 | if (link->flags & IFF_LOOPBACK) |
63 | return false; | |
64 | ||
65 | if (!link->network) | |
66 | return false; | |
67 | ||
68 | return link->network->dhcp_server; | |
69 | } | |
70 | ||
a97dcc12 | 71 | bool link_ipv4ll_enabled(Link *link) { |
78c958f8 TG |
72 | if (link->flags & IFF_LOOPBACK) |
73 | return false; | |
74 | ||
75 | if (!link->network) | |
76 | return false; | |
77 | ||
e0ee46f2 | 78 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
79 | } |
80 | ||
81 | bool link_ipv6ll_enabled(Link *link) { | |
82 | if (link->flags & IFF_LOOPBACK) | |
83 | return false; | |
84 | ||
85 | if (!link->network) | |
86 | return false; | |
87 | ||
e0ee46f2 | 88 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
89 | } |
90 | ||
a97dcc12 | 91 | bool link_lldp_enabled(Link *link) { |
ce43e484 SS |
92 | if (link->flags & IFF_LOOPBACK) |
93 | return false; | |
94 | ||
95 | if (!link->network) | |
96 | return false; | |
97 | ||
5a8bcb67 | 98 | if (link->network->bridge) |
ce43e484 SS |
99 | return false; |
100 | ||
101 | return link->network->lldp; | |
102 | } | |
103 | ||
769d324c | 104 | static bool link_ipv4_forward_enabled(Link *link) { |
5a8bcb67 LP |
105 | if (link->flags & IFF_LOOPBACK) |
106 | return false; | |
107 | ||
108 | if (!link->network) | |
109 | return false; | |
110 | ||
e0ee46f2 | 111 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
112 | } |
113 | ||
114 | static bool link_ipv6_forward_enabled(Link *link) { | |
115 | if (link->flags & IFF_LOOPBACK) | |
116 | return false; | |
117 | ||
118 | if (!link->network) | |
119 | return false; | |
120 | ||
e0ee46f2 | 121 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
122 | } |
123 | ||
1f0d9695 | 124 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
49092e22 | 125 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 126 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
127 | |
128 | if (!link->network) | |
1f0d9695 | 129 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
130 | |
131 | return link->network->ipv6_privacy_extensions; | |
132 | } | |
133 | ||
84de38c5 TG |
134 | void link_update_operstate(Link *link) { |
135 | LinkOperationalState operstate; | |
136 | assert(link); | |
137 | ||
138 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
139 | operstate = LINK_OPERSTATE_DORMANT; | |
140 | else if (link_has_carrier(link)) { | |
141 | Address *address; | |
142 | uint8_t scope = RT_SCOPE_NOWHERE; | |
143 | Iterator i; | |
144 | ||
145 | /* if we have carrier, check what addresses we have */ | |
146 | SET_FOREACH(address, link->addresses, i) { | |
147 | if (!address_is_ready(address)) | |
148 | continue; | |
149 | ||
150 | if (address->scope < scope) | |
151 | scope = address->scope; | |
152 | } | |
153 | ||
154 | /* for operstate we also take foreign addresses into account */ | |
155 | SET_FOREACH(address, link->addresses_foreign, i) { | |
156 | if (!address_is_ready(address)) | |
157 | continue; | |
158 | ||
159 | if (address->scope < scope) | |
160 | scope = address->scope; | |
161 | } | |
162 | ||
163 | if (scope < RT_SCOPE_SITE) | |
164 | /* universally accessible addresses found */ | |
165 | operstate = LINK_OPERSTATE_ROUTABLE; | |
166 | else if (scope < RT_SCOPE_HOST) | |
167 | /* only link or site local addresses found */ | |
168 | operstate = LINK_OPERSTATE_DEGRADED; | |
169 | else | |
170 | /* no useful addresses found */ | |
171 | operstate = LINK_OPERSTATE_CARRIER; | |
172 | } else if (link->flags & IFF_UP) | |
173 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
174 | else | |
175 | operstate = LINK_OPERSTATE_OFF; | |
176 | ||
177 | if (link->operstate != operstate) { | |
178 | link->operstate = operstate; | |
179 | link_send_changed(link, "OperationalState", NULL); | |
180 | link_dirty(link); | |
181 | manager_dirty(link->manager); | |
182 | } | |
183 | } | |
184 | ||
51d18171 TG |
185 | #define FLAG_STRING(string, flag, old, new) \ |
186 | (((old ^ new) & flag) \ | |
187 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
188 | : "") | |
189 | ||
1c4baffc | 190 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
191 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
192 | uint8_t operstate; | |
193 | int r; | |
194 | ||
195 | assert(link); | |
196 | ||
197 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
198 | if (r < 0) |
199 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 200 | |
1c4baffc | 201 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
202 | if (r < 0) |
203 | /* if we got a message without operstate, take it to mean | |
204 | the state was unchanged */ | |
205 | operstate = link->kernel_operstate; | |
206 | ||
207 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
208 | return 0; | |
209 | ||
210 | if (link->flags != flags) { | |
6a7a4e4d | 211 | 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 |
212 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
213 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
214 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
215 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
216 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
217 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
218 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
219 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
220 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
221 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
222 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
223 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
224 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
225 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
226 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
227 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
228 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
229 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
230 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
231 | ||
232 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
233 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
234 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
235 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
236 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
237 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
238 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
239 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
240 | ||
241 | /* link flags are currently at most 18 bits, let's align to | |
242 | * printing 20 */ | |
243 | if (unknown_flags_added) | |
79008bdd | 244 | log_link_debug(link, |
6a7a4e4d | 245 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
246 | unknown_flags_added); |
247 | ||
248 | if (unknown_flags_removed) | |
79008bdd | 249 | log_link_debug(link, |
6a7a4e4d | 250 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
251 | unknown_flags_removed); |
252 | } | |
253 | ||
254 | link->flags = flags; | |
255 | link->kernel_operstate = operstate; | |
256 | ||
84de38c5 | 257 | link_update_operstate(link); |
51d18171 TG |
258 | |
259 | return 0; | |
260 | } | |
261 | ||
1c4baffc | 262 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 263 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 264 | uint16_t type; |
ca4e095a | 265 | const char *ifname; |
505f8da7 | 266 | int r, ifindex; |
f579559b | 267 | |
0c2f9b84 | 268 | assert(manager); |
505f8da7 | 269 | assert(message); |
f579559b TG |
270 | assert(ret); |
271 | ||
1c4baffc | 272 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
273 | if (r < 0) |
274 | return r; | |
275 | else if (type != RTM_NEWLINK) | |
276 | return -EINVAL; | |
277 | ||
278 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
279 | if (r < 0) | |
280 | return r; | |
281 | else if (ifindex <= 0) | |
282 | return -EINVAL; | |
283 | ||
1c4baffc | 284 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
285 | if (r < 0) |
286 | return r; | |
287 | ||
f579559b TG |
288 | link = new0(Link, 1); |
289 | if (!link) | |
290 | return -ENOMEM; | |
291 | ||
14b746f7 | 292 | link->n_ref = 1; |
5a3eb5a7 | 293 | link->manager = manager; |
8434fd5c | 294 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 295 | link->rtnl_extended_attrs = true; |
505f8da7 TG |
296 | link->ifindex = ifindex; |
297 | link->ifname = strdup(ifname); | |
298 | if (!link->ifname) | |
299 | return -ENOMEM; | |
f579559b | 300 | |
1c4baffc | 301 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 302 | if (r < 0) |
79008bdd | 303 | log_link_debug(link, "MAC address not found for new device, continuing without"); |
512922f8 | 304 | |
3c9b8860 TG |
305 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", |
306 | link->ifindex); | |
fe8db0c5 | 307 | if (r < 0) |
315db1a8 | 308 | return -ENOMEM; |
fe8db0c5 | 309 | |
3c9b8860 TG |
310 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", |
311 | link->ifindex); | |
68a8723c TG |
312 | if (r < 0) |
313 | return -ENOMEM; | |
314 | ||
49699bac SS |
315 | r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", |
316 | link->ifindex); | |
317 | if (r < 0) | |
318 | return -ENOMEM; | |
319 | ||
320 | ||
d5099efc | 321 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
322 | if (r < 0) |
323 | return r; | |
324 | ||
325 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
326 | if (r < 0) |
327 | return r; | |
328 | ||
51d18171 TG |
329 | r = link_update_flags(link, message); |
330 | if (r < 0) | |
331 | return r; | |
332 | ||
f579559b TG |
333 | *ret = link; |
334 | link = NULL; | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
14b746f7 | 339 | static void link_free(Link *link) { |
428fd0a7 | 340 | Address *address; |
0d4ad91d AR |
341 | Iterator i; |
342 | Link *carrier; | |
428fd0a7 | 343 | |
f579559b TG |
344 | if (!link) |
345 | return; | |
346 | ||
cf1d700d TG |
347 | while (!set_isempty(link->addresses)) |
348 | address_free(set_first(link->addresses)); | |
349 | ||
350 | set_free(link->addresses); | |
428fd0a7 | 351 | |
adda1ed9 TG |
352 | while (!set_isempty(link->addresses_foreign)) |
353 | address_free(set_first(link->addresses_foreign)); | |
354 | ||
355 | set_free(link->addresses_foreign); | |
356 | ||
11bf3cce LP |
357 | while ((address = link->pool_addresses)) { |
358 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
359 | address_free(address); | |
360 | } | |
361 | ||
bfcdba8d | 362 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 363 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 364 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 365 | |
68a8723c TG |
366 | free(link->lease_file); |
367 | ||
07e10d1a TG |
368 | sd_lldp_free(link->lldp); |
369 | ||
49699bac SS |
370 | free(link->lldp_file); |
371 | ||
56cd007a | 372 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 373 | sd_dhcp6_client_unref(link->dhcp6_client); |
de1e9928 | 374 | sd_ndisc_unref(link->ndisc_router_discovery); |
4138fb2c | 375 | |
28aeb07f | 376 | if (link->manager) |
ae06ab10 | 377 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 378 | |
c166a070 | 379 | free(link->ifname); |
68a8723c | 380 | |
84de38c5 | 381 | (void)unlink(link->state_file); |
fe8db0c5 | 382 | free(link->state_file); |
c166a070 | 383 | |
b5db00e5 UTL |
384 | udev_device_unref(link->udev_device); |
385 | ||
0d4ad91d AR |
386 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
387 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
388 | hashmap_free(link->bound_to_links); | |
389 | ||
390 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
391 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
392 | hashmap_free(link->bound_by_links); | |
393 | ||
f579559b TG |
394 | free(link); |
395 | } | |
396 | ||
14b746f7 | 397 | Link *link_unref(Link *link) { |
957325b7 TG |
398 | if (!link) |
399 | return NULL; | |
400 | ||
401 | assert(link->n_ref > 0); | |
402 | ||
403 | link->n_ref --; | |
404 | ||
405 | if (link->n_ref > 0) | |
406 | return NULL; | |
407 | ||
408 | link_free(link); | |
14b746f7 TG |
409 | |
410 | return NULL; | |
411 | } | |
412 | ||
413 | Link *link_ref(Link *link) { | |
957325b7 TG |
414 | if (!link) |
415 | return NULL; | |
416 | ||
417 | assert(link->n_ref > 0); | |
418 | ||
419 | link->n_ref ++; | |
14b746f7 TG |
420 | |
421 | return link; | |
422 | } | |
423 | ||
11a7f229 TG |
424 | int link_get(Manager *m, int ifindex, Link **ret) { |
425 | Link *link; | |
11a7f229 TG |
426 | |
427 | assert(m); | |
11a7f229 TG |
428 | assert(ifindex); |
429 | assert(ret); | |
430 | ||
ae06ab10 | 431 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
432 | if (!link) |
433 | return -ENODEV; | |
434 | ||
435 | *ret = link; | |
436 | ||
437 | return 0; | |
438 | } | |
439 | ||
e331e246 TG |
440 | static void link_set_state(Link *link, LinkState state) { |
441 | assert(link); | |
442 | ||
443 | if (link->state == state) | |
444 | return; | |
445 | ||
446 | link->state = state; | |
447 | ||
448 | link_send_changed(link, "AdministrativeState", NULL); | |
449 | ||
450 | return; | |
451 | } | |
452 | ||
57bd6899 TG |
453 | static void link_enter_unmanaged(Link *link) { |
454 | assert(link); | |
455 | ||
6a7a4e4d | 456 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 457 | |
e331e246 | 458 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 459 | |
84de38c5 | 460 | link_dirty(link); |
57bd6899 TG |
461 | } |
462 | ||
111bb8f9 TG |
463 | static int link_stop_clients(Link *link) { |
464 | int r = 0, k; | |
465 | ||
466 | assert(link); | |
467 | assert(link->manager); | |
468 | assert(link->manager->event); | |
469 | ||
470 | if (!link->network) | |
471 | return 0; | |
472 | ||
ba179154 | 473 | if (link->dhcp_client) { |
111bb8f9 | 474 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d LP |
475 | if (k < 0) |
476 | r = log_link_warning_errno(link, r, "Could not stop DHCPv4 client: %m"); | |
111bb8f9 TG |
477 | } |
478 | ||
ba179154 | 479 | if (link->ipv4ll) { |
111bb8f9 | 480 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d LP |
481 | if (k < 0) |
482 | r = log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m"); | |
dd43110f TG |
483 | } |
484 | ||
de1e9928 | 485 | if(link->ndisc_router_discovery) { |
1873a3d3 PF |
486 | if (link->dhcp6_client) { |
487 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
6a7a4e4d LP |
488 | if (k < 0) |
489 | r = log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); | |
1873a3d3 | 490 | } |
4138fb2c | 491 | |
de1e9928 | 492 | k = sd_ndisc_stop(link->ndisc_router_discovery); |
6a7a4e4d | 493 | if (k < 0) |
ceabaf0f | 494 | r = log_link_warning_errno(link, r, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
495 | } |
496 | ||
ce43e484 | 497 | if (link->lldp) { |
ce43e484 | 498 | k = sd_lldp_stop(link->lldp); |
6a7a4e4d LP |
499 | if (k < 0) |
500 | r = log_link_warning_errno(link, r, "Could not stop LLDP: %m"); | |
ce43e484 SS |
501 | } |
502 | ||
111bb8f9 TG |
503 | return r; |
504 | } | |
505 | ||
b22d8a00 | 506 | void link_enter_failed(Link *link) { |
ef1ba606 | 507 | assert(link); |
f882c247 | 508 | |
370e9930 | 509 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
510 | return; |
511 | ||
6a7a4e4d | 512 | log_link_warning(link, "Failed"); |
449f7554 | 513 | |
e331e246 | 514 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 515 | |
111bb8f9 TG |
516 | link_stop_clients(link); |
517 | ||
84de38c5 | 518 | link_dirty(link); |
f882c247 TG |
519 | } |
520 | ||
4f434938 LP |
521 | static Address* link_find_dhcp_server_address(Link *link) { |
522 | Address *address; | |
523 | ||
524 | assert(link); | |
525 | assert(link->network); | |
526 | ||
d4cdbea5 | 527 | /* The first statically configured address if there is any */ |
4f434938 LP |
528 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
529 | ||
530 | if (address->family != AF_INET) | |
531 | continue; | |
532 | ||
af93291c | 533 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
534 | continue; |
535 | ||
536 | return address; | |
537 | } | |
538 | ||
539 | /* If that didn't work, find a suitable address we got from the pool */ | |
540 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
541 | if (address->family != AF_INET) | |
542 | continue; | |
543 | ||
544 | return address; | |
545 | } | |
546 | ||
547 | return NULL; | |
548 | } | |
549 | ||
dd43110f | 550 | static int link_enter_configured(Link *link) { |
dd43110f TG |
551 | assert(link); |
552 | assert(link->network); | |
553 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
554 | ||
6a7a4e4d | 555 | log_link_info(link, "Configured"); |
dd43110f | 556 | |
e331e246 | 557 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 558 | |
84de38c5 | 559 | link_dirty(link); |
dd43110f TG |
560 | |
561 | return 0; | |
562 | } | |
563 | ||
8012cd39 TG |
564 | void link_check_ready(Link *link) { |
565 | Address *a; | |
566 | Iterator i; | |
567 | ||
3c9b8860 | 568 | assert(link); |
adda1ed9 TG |
569 | |
570 | if (!link->network) | |
571 | return; | |
3c9b8860 TG |
572 | |
573 | if (!link->static_configured) | |
574 | return; | |
575 | ||
78c958f8 | 576 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
577 | if (!link->ipv4ll_address || |
578 | !link->ipv4ll_route) | |
579 | return; | |
580 | ||
3ada37a2 PF |
581 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
582 | !link->dhcp4_configured) || | |
583 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
584 | !link->dhcp6_configured) || | |
585 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
586 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
18d29550 PF |
587 | return; |
588 | ||
8012cd39 TG |
589 | SET_FOREACH(a, link->addresses, i) |
590 | if (!address_is_ready(a)) | |
591 | return; | |
592 | ||
9fdaa992 TG |
593 | if (link->state != LINK_STATE_CONFIGURED) |
594 | link_enter_configured(link); | |
3c9b8860 TG |
595 | |
596 | return; | |
597 | } | |
598 | ||
1c4baffc | 599 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 600 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
601 | int r; |
602 | ||
3c9b8860 | 603 | assert(link->link_messages > 0); |
370e9930 TG |
604 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
605 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
606 | LINK_STATE_LINGER)); | |
f882c247 | 607 | |
3c9b8860 | 608 | link->link_messages --; |
f882c247 | 609 | |
77a008c0 | 610 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
611 | return 1; |
612 | ||
1c4baffc | 613 | r = sd_netlink_message_get_errno(m); |
c166a070 | 614 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 615 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 616 | |
3c9b8860 | 617 | if (link->link_messages == 0) { |
6a7a4e4d | 618 | log_link_debug(link, "Routes set"); |
3c9b8860 | 619 | link->static_configured = true; |
8012cd39 | 620 | link_check_ready(link); |
dd3efc09 | 621 | } |
f882c247 TG |
622 | |
623 | return 1; | |
624 | } | |
625 | ||
626 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 627 | Route *rt; |
f882c247 TG |
628 | int r; |
629 | ||
630 | assert(link); | |
631 | assert(link->network); | |
ef1ba606 | 632 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 633 | |
e331e246 | 634 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 635 | |
3d3d4255 | 636 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 637 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 638 | if (r < 0) { |
6a7a4e4d | 639 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 640 | link_enter_failed(link); |
a6cc569e TG |
641 | return r; |
642 | } | |
643 | ||
3c9b8860 | 644 | link->link_messages ++; |
8ddbeaa2 | 645 | } |
f5be5601 | 646 | |
3c9b8860 TG |
647 | if (link->link_messages == 0) { |
648 | link->static_configured = true; | |
8012cd39 | 649 | link_check_ready(link); |
431ca2ce | 650 | } else |
6a7a4e4d | 651 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
652 | |
653 | return 0; | |
654 | } | |
655 | ||
91b5f997 | 656 | int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 657 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
658 | int r; |
659 | ||
660 | assert(m); | |
661 | assert(link); | |
662 | assert(link->ifname); | |
663 | ||
5da8149f | 664 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
665 | return 1; |
666 | ||
1c4baffc | 667 | r = sd_netlink_message_get_errno(m); |
b90b025a | 668 | if (r < 0 && r != -ESRCH) |
a2fae7bb | 669 | log_link_warning_errno(link, r, "Could not drop route: %m"); |
5c1d3fc9 | 670 | |
5bdd314c | 671 | return 1; |
5c1d3fc9 UTL |
672 | } |
673 | ||
1c4baffc | 674 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 675 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
676 | int r; |
677 | ||
4958aee4 | 678 | assert(rtnl); |
f5be5601 TG |
679 | assert(m); |
680 | assert(link); | |
681 | assert(link->ifname); | |
3c9b8860 | 682 | assert(link->link_messages > 0); |
370e9930 TG |
683 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
684 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 685 | |
3c9b8860 | 686 | link->link_messages --; |
f882c247 | 687 | |
5da8149f | 688 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
689 | return 1; |
690 | ||
1c4baffc | 691 | r = sd_netlink_message_get_errno(m); |
c166a070 | 692 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 693 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 694 | else if (r >= 0) |
200a0868 | 695 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 696 | |
3c9b8860 | 697 | if (link->link_messages == 0) { |
6a7a4e4d | 698 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 699 | link_enter_set_routes(link); |
dd3efc09 | 700 | } |
f882c247 TG |
701 | |
702 | return 1; | |
703 | } | |
704 | ||
4f5f911e LP |
705 | static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
706 | _cleanup_free_ struct in_addr *addresses = NULL; | |
707 | size_t n_addresses = 0, n_allocated = 0; | |
708 | char **a; | |
709 | ||
710 | log_debug("Copying DNS server information from %s", link->ifname); | |
711 | ||
712 | if (!link->network) | |
713 | return 0; | |
714 | ||
715 | STRV_FOREACH(a, link->network->dns) { | |
716 | struct in_addr ia; | |
717 | ||
718 | /* Only look for IPv4 addresses */ | |
719 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
720 | continue; | |
721 | ||
722 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
723 | return log_oom(); | |
724 | ||
725 | addresses[n_addresses++] = ia; | |
726 | } | |
727 | ||
728 | if (link->network->dhcp_dns && | |
729 | link->dhcp_lease) { | |
730 | const struct in_addr *da = NULL; | |
731 | int n; | |
732 | ||
733 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
734 | if (n > 0) { | |
735 | ||
736 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
737 | return log_oom(); | |
738 | ||
739 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
740 | n_addresses += n; | |
741 | } | |
742 | } | |
743 | ||
744 | if (n_addresses <= 0) | |
745 | return 0; | |
746 | ||
747 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
748 | } | |
749 | ||
750 | static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { | |
751 | _cleanup_free_ struct in_addr *addresses = NULL; | |
752 | size_t n_addresses = 0, n_allocated = 0; | |
753 | char **a; | |
754 | ||
755 | if (!link->network) | |
756 | return 0; | |
757 | ||
758 | log_debug("Copying NTP server information from %s", link->ifname); | |
759 | ||
760 | STRV_FOREACH(a, link->network->ntp) { | |
761 | struct in_addr ia; | |
762 | ||
763 | /* Only look for IPv4 addresses */ | |
764 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
765 | continue; | |
766 | ||
767 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
768 | return log_oom(); | |
769 | ||
770 | addresses[n_addresses++] = ia; | |
771 | } | |
772 | ||
773 | if (link->network->dhcp_ntp && | |
774 | link->dhcp_lease) { | |
775 | const struct in_addr *da = NULL; | |
776 | int n; | |
777 | ||
778 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
779 | if (n > 0) { | |
780 | ||
781 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
782 | return log_oom(); | |
783 | ||
784 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
785 | n_addresses += n; | |
786 | } | |
787 | } | |
788 | ||
789 | if (n_addresses <= 0) | |
790 | return 0; | |
791 | ||
792 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
793 | } | |
794 | ||
f882c247 | 795 | static int link_enter_set_addresses(Link *link) { |
a6cc569e | 796 | Address *ad; |
f882c247 TG |
797 | int r; |
798 | ||
799 | assert(link); | |
800 | assert(link->network); | |
f5be5601 | 801 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 802 | |
e331e246 | 803 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 804 | |
3d3d4255 | 805 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
66669078 | 806 | r = address_configure(ad, link, &address_handler, false); |
dd3efc09 | 807 | if (r < 0) { |
5a8bcb67 | 808 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
809 | link_enter_failed(link); |
810 | return r; | |
811 | } | |
812 | ||
3c9b8860 | 813 | link->link_messages ++; |
f882c247 TG |
814 | } |
815 | ||
d4cdbea5 TG |
816 | /* now that we can figure out a default address for the dhcp server, |
817 | start it */ | |
818 | if (link_dhcp4_server_enabled(link)) { | |
d4cdbea5 | 819 | Address *address; |
4f5f911e LP |
820 | Link *uplink = NULL; |
821 | bool acquired_uplink = false; | |
d4cdbea5 TG |
822 | |
823 | address = link_find_dhcp_server_address(link); | |
824 | if (!address) { | |
6a7a4e4d | 825 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
826 | link_enter_failed(link); |
827 | return 0; | |
828 | } | |
829 | ||
61986155 | 830 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
831 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
832 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
833 | if (r < 0) |
834 | return r; | |
835 | ||
836 | /* TODO: | |
837 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
838 | &main_address->in_addr.in); | |
839 | if (r < 0) | |
840 | return r; | |
d4cdbea5 TG |
841 | */ |
842 | ||
586ac6f7 LP |
843 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
844 | r = sd_dhcp_server_set_max_lease_time( | |
845 | link->dhcp_server, | |
846 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
847 | if (r < 0) | |
848 | return r; | |
849 | } | |
850 | ||
851 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
852 | r = sd_dhcp_server_set_default_lease_time( | |
853 | link->dhcp_server, | |
854 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
855 | if (r < 0) | |
856 | return r; | |
857 | } | |
858 | ||
1a04db0f LP |
859 | if (link->network->dhcp_server_emit_dns) { |
860 | ||
4f5f911e | 861 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 862 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
863 | else { |
864 | uplink = manager_find_uplink(link->manager, link); | |
865 | acquired_uplink = true; | |
866 | ||
867 | if (!uplink) { | |
868 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
869 | r = 0; | |
870 | } else | |
871 | r = link_push_dns_to_dhcp_server(uplink, link->dhcp_server); | |
872 | } | |
873 | if (r < 0) | |
874 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
875 | } |
876 | ||
877 | ||
878 | if (link->network->dhcp_server_emit_ntp) { | |
879 | ||
4f5f911e | 880 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 881 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
882 | else { |
883 | if (!acquired_uplink) | |
884 | uplink = manager_find_uplink(link->manager, link); | |
885 | ||
886 | if (!uplink) { | |
887 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
888 | r = 0; | |
889 | } else | |
890 | r = link_push_ntp_to_dhcp_server(uplink, link->dhcp_server); | |
891 | ||
892 | } | |
893 | if (r < 0) | |
894 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
895 | } |
896 | ||
8eb9058d LP |
897 | if (link->network->dhcp_server_emit_timezone) { |
898 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 899 | const char *tz = NULL; |
8eb9058d LP |
900 | |
901 | if (link->network->dhcp_server_timezone) | |
902 | tz = link->network->dhcp_server_timezone; | |
903 | else { | |
904 | r = get_timezone(&buffer); | |
905 | if (r < 0) | |
906 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
907 | else | |
908 | tz = buffer; | |
909 | } | |
910 | ||
911 | if (tz) { | |
912 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
913 | if (r < 0) | |
914 | return r; | |
915 | } | |
916 | } | |
917 | ||
d4cdbea5 TG |
918 | r = sd_dhcp_server_start(link->dhcp_server); |
919 | if (r < 0) { | |
6a7a4e4d | 920 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
921 | |
922 | link_enter_failed(link); | |
923 | ||
924 | return 0; | |
925 | } | |
926 | ||
6a7a4e4d | 927 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
928 | } |
929 | ||
6a7a4e4d | 930 | if (link->link_messages == 0) |
431ca2ce | 931 | link_enter_set_routes(link); |
6a7a4e4d LP |
932 | else |
933 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 934 | |
f882c247 TG |
935 | return 0; |
936 | } | |
937 | ||
91b5f997 | 938 | int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 939 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
940 | int r; |
941 | ||
942 | assert(m); | |
943 | assert(link); | |
944 | assert(link->ifname); | |
945 | ||
5da8149f | 946 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
947 | return 1; |
948 | ||
1c4baffc | 949 | r = sd_netlink_message_get_errno(m); |
b90b025a | 950 | if (r < 0 && r != -EADDRNOTAVAIL) |
a2fae7bb | 951 | log_link_warning_errno(link, r, "Could not drop address: %m"); |
ff254138 | 952 | |
5bdd314c | 953 | return 1; |
ff254138 TG |
954 | } |
955 | ||
a245ced0 | 956 | static int link_set_bridge_fdb(Link *const link) { |
b98b483b AR |
957 | FdbEntry *fdb_entry; |
958 | int r = 0; | |
959 | ||
960 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
ea6ec096 | 961 | r = fdb_entry_configure(link, fdb_entry); |
b98b483b | 962 | if(r < 0) { |
6a7a4e4d | 963 | log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
b98b483b AR |
964 | break; |
965 | } | |
966 | } | |
967 | ||
968 | return r; | |
969 | } | |
970 | ||
1c4baffc | 971 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
972 | _cleanup_link_unref_ Link *link = userdata; |
973 | int r; | |
974 | ||
6a7a4e4d | 975 | log_link_debug(link, "Set link"); |
e1853b00 | 976 | |
1c4baffc | 977 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 978 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 979 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
980 | link_enter_failed(link); |
981 | return 1; | |
982 | } | |
983 | ||
984 | return 0; | |
985 | } | |
986 | ||
19070062 | 987 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
5da8149f | 988 | _cleanup_link_unref_ Link *link = userdata; |
21b80ad1 | 989 | const sd_bus_error *e; |
1346b1f0 | 990 | |
19070062 | 991 | assert(m); |
b226d99b TG |
992 | assert(link); |
993 | ||
5da8149f | 994 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 995 | return 1; |
370e9930 | 996 | |
21b80ad1 LP |
997 | e = sd_bus_message_get_error(m); |
998 | if (e) | |
999 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); | |
1346b1f0 TG |
1000 | |
1001 | return 1; | |
1002 | } | |
1003 | ||
3c9b8860 | 1004 | int link_set_hostname(Link *link, const char *hostname) { |
21b80ad1 | 1005 | int r; |
1346b1f0 | 1006 | |
b226d99b TG |
1007 | assert(link); |
1008 | assert(link->manager); | |
1346b1f0 | 1009 | |
dce391e7 | 1010 | log_link_debug(link, "Setting transient hostname: '%s'", strna(hostname)); |
1346b1f0 | 1011 | |
3c9b8860 TG |
1012 | if (!link->manager->bus) { |
1013 | /* TODO: replace by assert when we can rely on kdbus */ | |
6a7a4e4d | 1014 | log_link_info(link, "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
1015 | return 0; |
1016 | } | |
1017 | ||
9c34154a | 1018 | r = sd_bus_call_method_async( |
b226d99b | 1019 | link->manager->bus, |
9c34154a | 1020 | NULL, |
1346b1f0 TG |
1021 | "org.freedesktop.hostname1", |
1022 | "/org/freedesktop/hostname1", | |
1023 | "org.freedesktop.hostname1", | |
9c34154a UTL |
1024 | "SetHostname", |
1025 | set_hostname_handler, | |
1026 | link, | |
1027 | "sb", | |
1028 | hostname, | |
1029 | false); | |
1346b1f0 | 1030 | |
6a7a4e4d LP |
1031 | if (r < 0) |
1032 | return log_link_error_errno(link, r, "Could not set transient hostname: %m"); | |
b226d99b TG |
1033 | |
1034 | link_ref(link); | |
1346b1f0 | 1035 | |
5da8149f | 1036 | return 0; |
1346b1f0 TG |
1037 | } |
1038 | ||
21b80ad1 LP |
1039 | static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
1040 | _cleanup_link_unref_ Link *link = userdata; | |
1041 | const sd_bus_error *e; | |
1042 | ||
1043 | assert(m); | |
1044 | assert(link); | |
1045 | ||
1046 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1047 | return 1; | |
1048 | ||
1049 | e = sd_bus_message_get_error(m); | |
1050 | if (e) | |
1051 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); | |
1052 | ||
1053 | return 1; | |
1054 | } | |
1055 | ||
64d6c229 | 1056 | int link_set_timezone(Link *link, const char *tz) { |
21b80ad1 LP |
1057 | int r; |
1058 | ||
1059 | assert(link); | |
1060 | assert(link->manager); | |
64d6c229 | 1061 | assert(tz); |
21b80ad1 | 1062 | |
64d6c229 | 1063 | log_link_debug(link, "Setting system timezone: '%s'", tz); |
21b80ad1 LP |
1064 | |
1065 | if (!link->manager->bus) { | |
1066 | log_link_info(link, "Not connected to system bus, ignoring timezone."); | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | r = sd_bus_call_method_async( | |
1071 | link->manager->bus, | |
1072 | NULL, | |
1073 | "org.freedesktop.timedate1", | |
1074 | "/org/freedesktop/timedate1", | |
1075 | "org.freedesktop.timedate1", | |
1076 | "SetTimezone", | |
1077 | set_timezone_handler, | |
1078 | link, | |
1079 | "sb", | |
64d6c229 | 1080 | tz, |
21b80ad1 LP |
1081 | false); |
1082 | if (r < 0) | |
1083 | return log_link_error_errno(link, r, "Could not set timezone: %m"); | |
1084 | ||
1085 | link_ref(link); | |
1086 | ||
1087 | return 0; | |
1088 | } | |
1089 | ||
1c4baffc | 1090 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1091 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
1092 | int r; |
1093 | ||
1094 | assert(m); | |
1095 | assert(link); | |
1096 | assert(link->ifname); | |
1097 | ||
5da8149f | 1098 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1099 | return 1; |
1100 | ||
1c4baffc | 1101 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 1102 | if (r < 0) |
a2fae7bb | 1103 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
4f882b2a TG |
1104 | |
1105 | return 1; | |
1106 | } | |
1107 | ||
3c9b8860 | 1108 | int link_set_mtu(Link *link, uint32_t mtu) { |
1c4baffc | 1109 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f882b2a TG |
1110 | int r; |
1111 | ||
1112 | assert(link); | |
1113 | assert(link->manager); | |
1114 | assert(link->manager->rtnl); | |
1115 | ||
6a7a4e4d | 1116 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1117 | |
6a7a4e4d LP |
1118 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1119 | if (r < 0) | |
1120 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1121 | |
1c4baffc | 1122 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1123 | if (r < 0) |
1124 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1125 | |
1c4baffc | 1126 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
1127 | if (r < 0) |
1128 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1129 | |
ae941762 | 1130 | link_ref(link); |
b226d99b | 1131 | |
4f882b2a TG |
1132 | return 0; |
1133 | } | |
1134 | ||
e1853b00 | 1135 | static int link_set_bridge(Link *link) { |
1c4baffc | 1136 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
e1853b00 SS |
1137 | int r; |
1138 | ||
1139 | assert(link); | |
1140 | assert(link->network); | |
1141 | ||
6a7a4e4d LP |
1142 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1143 | if (r < 0) | |
1144 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1145 | |
1146 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1147 | if (r < 0) |
1148 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1149 | |
1c4baffc | 1150 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1151 | if (r < 0) |
1152 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1153 | |
84c34096 | 1154 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, !link->network->use_bpdu); |
eb7ff4dd SS |
1155 | if (r < 0) |
1156 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1157 | ||
1158 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1159 | if (r < 0) | |
1160 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1161 | ||
1162 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1163 | if (r < 0) | |
1164 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1165 | ||
23da66bb | 1166 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, !link->network->allow_port_to_be_root); |
eb7ff4dd SS |
1167 | if (r < 0) |
1168 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
1169 | ||
1170 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1171 | if (r < 0) | |
1172 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
1173 | ||
e1853b00 | 1174 | if(link->network->cost != 0) { |
1c4baffc | 1175 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1176 | if (r < 0) |
1177 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 SS |
1178 | } |
1179 | ||
1c4baffc | 1180 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1181 | if (r < 0) |
1182 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1183 | |
1c4baffc | 1184 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
1185 | if (r < 0) |
1186 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1187 | |
1188 | link_ref(link); | |
1189 | ||
1190 | return r; | |
1191 | } | |
1192 | ||
49699bac SS |
1193 | static void lldp_handler(sd_lldp *lldp, int event, void *userdata) { |
1194 | Link *link = userdata; | |
1195 | int r; | |
1196 | ||
1197 | assert(link); | |
1198 | assert(link->network); | |
1199 | assert(link->manager); | |
1200 | ||
9ef61f2e DH |
1201 | switch (event) { |
1202 | case SD_LLDP_EVENT_UPDATE_INFO: | |
1203 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
1204 | if (r < 0) | |
1205 | log_link_warning_errno(link, r, "Could not save LLDP: %m"); | |
49699bac | 1206 | |
9ef61f2e DH |
1207 | break; |
1208 | default: | |
1209 | break; | |
1210 | } | |
49699bac SS |
1211 | } |
1212 | ||
ff254138 TG |
1213 | static int link_acquire_conf(Link *link) { |
1214 | int r; | |
1215 | ||
1216 | assert(link); | |
1217 | assert(link->network); | |
ff254138 TG |
1218 | assert(link->manager); |
1219 | assert(link->manager->event); | |
1220 | ||
78c958f8 | 1221 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1222 | assert(link->ipv4ll); |
ff254138 | 1223 | |
6a7a4e4d | 1224 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1225 | |
1226 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1227 | if (r < 0) |
1228 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1229 | } |
1230 | ||
78c958f8 | 1231 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1232 | assert(link->dhcp_client); |
ff254138 | 1233 | |
6a7a4e4d | 1234 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1235 | |
5c1d3fc9 | 1236 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1237 | if (r < 0) |
1238 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1239 | } |
ff254138 | 1240 | |
78c958f8 | 1241 | if (link_dhcp6_enabled(link)) { |
de1e9928 | 1242 | assert(link->ndisc_router_discovery); |
4138fb2c | 1243 | |
6a7a4e4d | 1244 | log_link_debug(link, "Discovering IPv6 routers"); |
4138fb2c | 1245 | |
de1e9928 | 1246 | r = sd_ndisc_router_discovery_start(link->ndisc_router_discovery); |
6a7a4e4d | 1247 | if (r < 0) |
ceabaf0f | 1248 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
4138fb2c PF |
1249 | } |
1250 | ||
ce43e484 SS |
1251 | if (link_lldp_enabled(link)) { |
1252 | assert(link->lldp); | |
1253 | ||
1254 | log_link_debug(link, "Starting LLDP"); | |
1255 | ||
1256 | r = sd_lldp_start(link->lldp); | |
6a7a4e4d LP |
1257 | if (r < 0) |
1258 | return log_link_warning_errno(link, r, "Could not start LLDP: %m"); | |
ce43e484 SS |
1259 | } |
1260 | ||
ff254138 TG |
1261 | return 0; |
1262 | } | |
1263 | ||
a61bb41c | 1264 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1265 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1266 | ||
a61bb41c | 1267 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1268 | return true; |
1269 | ||
a61bb41c | 1270 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1271 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1272 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1273 | return true; |
1274 | ||
1275 | return false; | |
1276 | } | |
1277 | ||
1c4baffc | 1278 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1279 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1280 | int r; |
1281 | ||
1746cf2a TG |
1282 | assert(link); |
1283 | ||
5da8149f | 1284 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1285 | return 1; |
1286 | ||
1c4baffc | 1287 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
1288 | if (r < 0) |
1289 | /* we warn but don't fail the link, as it may be | |
1290 | brought up later */ | |
a2fae7bb | 1291 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1292 | |
f882c247 TG |
1293 | return 1; |
1294 | } | |
1295 | ||
1296 | static int link_up(Link *link) { | |
1c4baffc | 1297 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
5c3072ea | 1298 | uint8_t ipv6ll_mode; |
f579559b TG |
1299 | int r; |
1300 | ||
f882c247 | 1301 | assert(link); |
c106cc36 | 1302 | assert(link->network); |
f882c247 TG |
1303 | assert(link->manager); |
1304 | assert(link->manager->rtnl); | |
1305 | ||
6a7a4e4d | 1306 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1307 | |
6a7a4e4d LP |
1308 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1309 | if (r < 0) | |
1310 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1311 | |
5d4795f3 | 1312 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1313 | if (r < 0) |
1314 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1315 | |
c106cc36 | 1316 | if (link->network->mac) { |
1c4baffc | 1317 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1318 | if (r < 0) |
1319 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1320 | } |
1321 | ||
1322 | if (link->network->mtu) { | |
1c4baffc | 1323 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1324 | if (r < 0) |
1325 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1326 | } |
1327 | ||
1c4baffc | 1328 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1329 | if (r < 0) |
1330 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1331 | |
01d28f81 TG |
1332 | if (socket_ipv6_is_supported()) { |
1333 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ | |
1c4baffc | 1334 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1335 | if (r < 0) |
1336 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1337 | |
01d28f81 | 1338 | ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE; |
1c4baffc | 1339 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1340 | if (r < 0) |
1341 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1342 | |
01d28f81 | 1343 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1344 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1345 | if (r < 0) |
1346 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1347 | } | |
1348 | ||
1c4baffc | 1349 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1350 | if (r < 0) |
01d28f81 | 1351 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1352 | } |
d0d6a4cd | 1353 | |
1c4baffc | 1354 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1355 | if (r < 0) |
1356 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1357 | |
1c4baffc | 1358 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1359 | if (r < 0) |
1360 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1361 | |
b226d99b TG |
1362 | link_ref(link); |
1363 | ||
f882c247 TG |
1364 | return 0; |
1365 | } | |
1366 | ||
1c4baffc | 1367 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1368 | _cleanup_link_unref_ Link *link = userdata; |
1369 | int r; | |
1370 | ||
1371 | assert(link); | |
1372 | ||
1373 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1374 | return 1; | |
1375 | ||
1c4baffc | 1376 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1377 | if (r < 0) |
a2fae7bb | 1378 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d AR |
1379 | |
1380 | return 1; | |
1381 | } | |
1382 | ||
1383 | static int link_down(Link *link) { | |
1c4baffc | 1384 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
0d4ad91d AR |
1385 | int r; |
1386 | ||
1387 | assert(link); | |
1388 | assert(link->manager); | |
1389 | assert(link->manager->rtnl); | |
1390 | ||
6a7a4e4d | 1391 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1392 | |
1393 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1394 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1395 | if (r < 0) |
1396 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1397 | |
1398 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1399 | if (r < 0) |
1400 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1401 | |
1c4baffc | 1402 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1403 | if (r < 0) |
1404 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1405 | |
1406 | link_ref(link); | |
1407 | ||
1408 | return 0; | |
1409 | } | |
1410 | ||
1411 | static int link_handle_bound_to_list(Link *link) { | |
1412 | Link *l; | |
1413 | Iterator i; | |
1414 | int r; | |
1415 | bool required_up = false; | |
1416 | bool link_is_up = false; | |
1417 | ||
1418 | assert(link); | |
1419 | ||
1420 | if (hashmap_isempty(link->bound_to_links)) | |
1421 | return 0; | |
1422 | ||
1423 | if (link->flags & IFF_UP) | |
1424 | link_is_up = true; | |
1425 | ||
1426 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1427 | if (link_has_carrier(l)) { | |
1428 | required_up = true; | |
1429 | break; | |
1430 | } | |
1431 | ||
1432 | if (!required_up && link_is_up) { | |
1433 | r = link_down(link); | |
1434 | if (r < 0) | |
1435 | return r; | |
1436 | } else if (required_up && !link_is_up) { | |
1437 | r = link_up(link); | |
1438 | if (r < 0) | |
1439 | return r; | |
1440 | } | |
1441 | ||
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | static int link_handle_bound_by_list(Link *link) { | |
1446 | Iterator i; | |
1447 | Link *l; | |
1448 | int r; | |
1449 | ||
1450 | assert(link); | |
1451 | ||
1452 | if (hashmap_isempty(link->bound_by_links)) | |
1453 | return 0; | |
1454 | ||
1455 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1456 | r = link_handle_bound_to_list(l); | |
1457 | if (r < 0) | |
1458 | return r; | |
1459 | } | |
1460 | ||
1461 | return 0; | |
1462 | } | |
1463 | ||
1464 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1465 | int r; | |
1466 | ||
1467 | assert(link); | |
1468 | assert(carrier); | |
1469 | ||
1470 | if (link == carrier) | |
1471 | return 0; | |
1472 | ||
1473 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1474 | return 0; | |
1475 | ||
1476 | r = hashmap_ensure_allocated(h, NULL); | |
1477 | if (r < 0) | |
1478 | return r; | |
1479 | ||
1480 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1481 | if (r < 0) | |
1482 | return r; | |
1483 | ||
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | static int link_new_bound_by_list(Link *link) { | |
1488 | Manager *m; | |
1489 | Link *carrier; | |
1490 | Iterator i; | |
1491 | int r; | |
1492 | bool list_updated = false; | |
1493 | ||
1494 | assert(link); | |
1495 | assert(link->manager); | |
1496 | ||
1497 | m = link->manager; | |
1498 | ||
1499 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1500 | if (!carrier->network) | |
1501 | continue; | |
1502 | ||
1503 | if (strv_isempty(carrier->network->bind_carrier)) | |
1504 | continue; | |
1505 | ||
1506 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1507 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1508 | if (r < 0) | |
1509 | return r; | |
1510 | ||
1511 | list_updated = true; | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | if (list_updated) | |
84de38c5 | 1516 | link_dirty(link); |
0d4ad91d AR |
1517 | |
1518 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) { | |
1519 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); | |
1520 | if (r < 0) | |
1521 | return r; | |
1522 | ||
84de38c5 | 1523 | link_dirty(carrier); |
0d4ad91d AR |
1524 | } |
1525 | ||
1526 | return 0; | |
1527 | } | |
1528 | ||
1529 | static int link_new_bound_to_list(Link *link) { | |
1530 | Manager *m; | |
1531 | Link *carrier; | |
1532 | Iterator i; | |
1533 | int r; | |
1534 | bool list_updated = false; | |
1535 | ||
1536 | assert(link); | |
1537 | assert(link->manager); | |
1538 | ||
1539 | if (!link->network) | |
1540 | return 0; | |
1541 | ||
1542 | if (strv_isempty(link->network->bind_carrier)) | |
1543 | return 0; | |
1544 | ||
1545 | m = link->manager; | |
1546 | ||
1547 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1548 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1549 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1550 | if (r < 0) | |
1551 | return r; | |
1552 | ||
1553 | list_updated = true; | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | if (list_updated) | |
84de38c5 | 1558 | link_dirty(link); |
0d4ad91d AR |
1559 | |
1560 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1561 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1562 | if (r < 0) | |
1563 | return r; | |
1564 | ||
84de38c5 | 1565 | link_dirty(carrier); |
0d4ad91d AR |
1566 | } |
1567 | ||
1568 | return 0; | |
1569 | } | |
1570 | ||
1571 | static int link_new_carrier_maps(Link *link) { | |
1572 | int r; | |
1573 | ||
1574 | r = link_new_bound_by_list(link); | |
1575 | if (r < 0) | |
1576 | return r; | |
1577 | ||
1578 | r = link_handle_bound_by_list(link); | |
1579 | if (r < 0) | |
1580 | return r; | |
1581 | ||
1582 | r = link_new_bound_to_list(link); | |
1583 | if (r < 0) | |
1584 | return r; | |
1585 | ||
1586 | r = link_handle_bound_to_list(link); | |
1587 | if (r < 0) | |
1588 | return r; | |
1589 | ||
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | static void link_free_bound_to_list(Link *link) { | |
1594 | Link *bound_to; | |
1595 | Iterator i; | |
1596 | ||
1597 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
1598 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
1599 | ||
1600 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1601 | link_dirty(bound_to); |
0d4ad91d AR |
1602 | } |
1603 | ||
1604 | return; | |
1605 | } | |
1606 | ||
1607 | static void link_free_bound_by_list(Link *link) { | |
1608 | Link *bound_by; | |
1609 | Iterator i; | |
1610 | ||
1611 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
1612 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
1613 | ||
1614 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1615 | link_dirty(bound_by); |
0d4ad91d AR |
1616 | link_handle_bound_to_list(bound_by); |
1617 | } | |
1618 | } | |
1619 | ||
1620 | return; | |
1621 | } | |
1622 | ||
1623 | static void link_free_carrier_maps(Link *link) { | |
1624 | bool list_updated = false; | |
1625 | ||
1626 | assert(link); | |
1627 | ||
1628 | if (!hashmap_isempty(link->bound_to_links)) { | |
1629 | link_free_bound_to_list(link); | |
1630 | list_updated = true; | |
1631 | } | |
1632 | ||
1633 | if (!hashmap_isempty(link->bound_by_links)) { | |
1634 | link_free_bound_by_list(link); | |
1635 | list_updated = true; | |
1636 | } | |
1637 | ||
1638 | if (list_updated) | |
84de38c5 | 1639 | link_dirty(link); |
0d4ad91d AR |
1640 | |
1641 | return; | |
1642 | } | |
1643 | ||
1644 | void link_drop(Link *link) { | |
1645 | if (!link || link->state == LINK_STATE_LINGER) | |
1646 | return; | |
1647 | ||
1648 | link_set_state(link, LINK_STATE_LINGER); | |
1649 | ||
1650 | link_free_carrier_maps(link); | |
1651 | ||
6a7a4e4d | 1652 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1653 | |
84de38c5 | 1654 | (void)unlink(link->state_file); |
0d4ad91d AR |
1655 | link_unref(link); |
1656 | ||
1657 | return; | |
1658 | } | |
1659 | ||
3f265037 | 1660 | static int link_joined(Link *link) { |
f882c247 TG |
1661 | int r; |
1662 | ||
ef1ba606 | 1663 | assert(link); |
f5be5601 | 1664 | assert(link->network); |
dd3efc09 | 1665 | |
0d4ad91d AR |
1666 | if (!hashmap_isempty(link->bound_to_links)) { |
1667 | r = link_handle_bound_to_list(link); | |
1668 | if (r < 0) | |
1669 | return r; | |
1670 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1671 | r = link_up(link); |
1672 | if (r < 0) { | |
1673 | link_enter_failed(link); | |
1674 | return r; | |
1675 | } | |
ef1ba606 | 1676 | } |
f882c247 | 1677 | |
e1853b00 SS |
1678 | if(link->network->bridge) { |
1679 | r = link_set_bridge(link); | |
6a7a4e4d LP |
1680 | if (r < 0) |
1681 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
1682 | } |
1683 | ||
fb6730c4 | 1684 | return link_enter_set_addresses(link); |
02b59d57 TG |
1685 | } |
1686 | ||
62e2d5bb | 1687 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1688 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1689 | int r; |
1690 | ||
1746cf2a | 1691 | assert(link); |
ef1ba606 | 1692 | assert(link->network); |
02b59d57 | 1693 | |
52433f6b TG |
1694 | link->enslaving --; |
1695 | ||
5da8149f | 1696 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1697 | return 1; |
1698 | ||
1c4baffc | 1699 | r = sd_netlink_message_get_errno(m); |
856f962c | 1700 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 1701 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
1702 | link_enter_failed(link); |
1703 | return 1; | |
ba179154 | 1704 | } else |
6a7a4e4d | 1705 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 1706 | |
856f962c | 1707 | if (link->enslaving <= 0) |
3f265037 | 1708 | link_joined(link); |
02b59d57 TG |
1709 | |
1710 | return 1; | |
1711 | } | |
1712 | ||
3f265037 | 1713 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1714 | NetDev *netdev; |
672682a6 | 1715 | Iterator i; |
02b59d57 TG |
1716 | int r; |
1717 | ||
1718 | assert(link); | |
1719 | assert(link->network); | |
8434fd5c | 1720 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1721 | |
e331e246 | 1722 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 1723 | |
84de38c5 | 1724 | link_dirty(link); |
fe8db0c5 | 1725 | |
7951dea2 SS |
1726 | if (!link->network->bridge && |
1727 | !link->network->bond && | |
6a0a2f86 | 1728 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1729 | return link_joined(link); |
02b59d57 | 1730 | |
d9c67ea1 | 1731 | if (link->network->bond) { |
f2341e0a LP |
1732 | log_struct(LOG_DEBUG, |
1733 | LOG_LINK_INTERFACE(link), | |
1734 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1735 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
1736 | NULL); | |
1737 | ||
1738 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 1739 | if (r < 0) { |
f2341e0a LP |
1740 | log_struct_errno(LOG_WARNING, r, |
1741 | LOG_LINK_INTERFACE(link), | |
1742 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1743 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
1744 | NULL); | |
1745 | ||
52433f6b TG |
1746 | link_enter_failed(link); |
1747 | return r; | |
1748 | } | |
1749 | ||
0ad6148e MO |
1750 | link->enslaving ++; |
1751 | } | |
1752 | ||
d9c67ea1 | 1753 | if (link->network->bridge) { |
f2341e0a LP |
1754 | log_struct(LOG_DEBUG, |
1755 | LOG_LINK_INTERFACE(link), | |
1756 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1757 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
1758 | NULL); | |
1759 | ||
1760 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 1761 | if (r < 0) { |
f2341e0a LP |
1762 | log_struct_errno(LOG_WARNING, r, |
1763 | LOG_LINK_INTERFACE(link), | |
1764 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1765 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
1766 | NULL), | |
0ad6148e MO |
1767 | link_enter_failed(link); |
1768 | return r; | |
1769 | } | |
1770 | ||
52433f6b TG |
1771 | link->enslaving ++; |
1772 | } | |
1773 | ||
6a0a2f86 | 1774 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 1775 | |
f2341e0a LP |
1776 | log_struct(LOG_DEBUG, |
1777 | LOG_LINK_INTERFACE(link), | |
1778 | LOG_NETDEV_INTERFACE(netdev), | |
1779 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
1780 | NULL); | |
1781 | ||
1782 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 1783 | if (r < 0) { |
f2341e0a LP |
1784 | log_struct_errno(LOG_WARNING, r, |
1785 | LOG_LINK_INTERFACE(link), | |
1786 | LOG_NETDEV_INTERFACE(netdev), | |
1787 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
1788 | NULL); | |
326cb406 SS |
1789 | link_enter_failed(link); |
1790 | return r; | |
1791 | } | |
1792 | ||
326cb406 SS |
1793 | link->enslaving ++; |
1794 | } | |
1795 | ||
ef1ba606 TG |
1796 | return 0; |
1797 | } | |
1798 | ||
769d324c | 1799 | static int link_set_ipv4_forward(Link *link) { |
15dee3f0 | 1800 | const char *p = NULL, *v; |
5a8bcb67 LP |
1801 | int r; |
1802 | ||
15dee3f0 LP |
1803 | if (link->flags & IFF_LOOPBACK) |
1804 | return 0; | |
1805 | ||
8add5f79 NO |
1806 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1807 | return 0; | |
1808 | ||
63c372cb | 1809 | p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1810 | v = one_zero(link_ipv4_forward_enabled(link)); |
1811 | ||
4c1fc3e4 | 1812 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1813 | if (r < 0) { |
1814 | /* If the right value is set anyway, don't complain */ | |
1815 | if (verify_one_line_file(p, v) > 0) | |
1816 | return 0; | |
1817 | ||
43c6d5ab | 1818 | log_link_warning_errno(link, r, "Cannot configure IPv4 forwarding for interface %s: %m", link->ifname); |
15dee3f0 | 1819 | } |
43c6d5ab | 1820 | |
769d324c LP |
1821 | return 0; |
1822 | } | |
1823 | ||
1824 | static int link_set_ipv6_forward(Link *link) { | |
15dee3f0 | 1825 | const char *p = NULL, *v = NULL; |
769d324c LP |
1826 | int r; |
1827 | ||
fe027299 LP |
1828 | /* Make this a NOP if IPv6 is not available */ |
1829 | if (!socket_ipv6_is_supported()) | |
1830 | return 0; | |
1831 | ||
15dee3f0 LP |
1832 | if (link->flags & IFF_LOOPBACK) |
1833 | return 0; | |
1834 | ||
8add5f79 NO |
1835 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1836 | return 0; | |
1837 | ||
63c372cb | 1838 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1839 | v = one_zero(link_ipv6_forward_enabled(link)); |
1840 | ||
4c1fc3e4 | 1841 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1842 | if (r < 0) { |
1843 | /* If the right value is set anyway, don't complain */ | |
1844 | if (verify_one_line_file(p, v) > 0) | |
1845 | return 0; | |
1846 | ||
769d324c | 1847 | log_link_warning_errno(link, r, "Cannot configure IPv6 forwarding for interface: %m"); |
15dee3f0 | 1848 | } |
5a8bcb67 LP |
1849 | |
1850 | return 0; | |
1851 | } | |
1852 | ||
49092e22 | 1853 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 LP |
1854 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; |
1855 | IPv6PrivacyExtensions s; | |
49092e22 SS |
1856 | const char *p = NULL; |
1857 | int r; | |
1858 | ||
1859 | /* Make this a NOP if IPv6 is not available */ | |
1860 | if (!socket_ipv6_is_supported()) | |
1861 | return 0; | |
1862 | ||
1f0d9695 LP |
1863 | s = link_ipv6_privacy_extensions(link); |
1864 | if (s == _IPV6_PRIVACY_EXTENSIONS_INVALID) | |
49092e22 SS |
1865 | return 0; |
1866 | ||
1867 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
1868 | xsprintf(buf, "%u", link->network->ipv6_privacy_extensions); | |
1869 | ||
4c1fc3e4 | 1870 | r = write_string_file(p, buf, 0); |
1f0d9695 LP |
1871 | if (r < 0) { |
1872 | /* If the right value is set anyway, don't complain */ | |
1873 | if (verify_one_line_file(p, buf) > 0) | |
1874 | return 0; | |
1875 | ||
49092e22 | 1876 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
1f0d9695 | 1877 | } |
49092e22 SS |
1878 | |
1879 | return 0; | |
1880 | } | |
1881 | ||
4f2e437a SS |
1882 | static int link_set_ipv6_accept_ra(Link *link) { |
1883 | const char *p = NULL, *v = NULL; | |
4f2e437a SS |
1884 | int r; |
1885 | ||
1886 | /* Make this a NOP if IPv6 is not available */ | |
1887 | if (!socket_ipv6_is_supported()) | |
1888 | return 0; | |
1889 | ||
1890 | if (link->flags & IFF_LOOPBACK) | |
1891 | return 0; | |
1892 | ||
6a512301 GM |
1893 | /* If unset use system default (enabled if local forwarding is disabled. |
1894 | * disabled if local forwarding is enabled). | |
1895 | * If set, ignore or enforce RA independent of local forwarding state. | |
4f2e437a | 1896 | */ |
ebf98081 | 1897 | if (link->network->ipv6_accept_ra < 0) |
6a512301 GM |
1898 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ |
1899 | v = "1"; | |
ebf98081 | 1900 | else if (link->network->ipv6_accept_ra > 0) |
6a512301 GM |
1901 | /* "2" means accept RA even if ip_forward is enabled */ |
1902 | v = "2"; | |
ebf98081 | 1903 | else |
6a512301 GM |
1904 | /* "0" means ignore RA */ |
1905 | v = "0"; | |
ebf98081 | 1906 | |
4f2e437a | 1907 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); |
4f2e437a SS |
1908 | |
1909 | r = write_string_file(p, v, 0); | |
1910 | if (r < 0) { | |
1911 | /* If the right value is set anyway, don't complain */ | |
1912 | if (verify_one_line_file(p, v) > 0) | |
1913 | return 0; | |
1914 | ||
1915 | log_link_warning_errno(link, r, "Cannot configure IPv6 accept_ra for interface: %m"); | |
1916 | } | |
1917 | ||
1918 | return 0; | |
1919 | } | |
1920 | ||
8749cbcd SS |
1921 | static int link_set_ipv6_dad_transmits(Link *link) { |
1922 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; | |
1923 | const char *p = NULL; | |
1924 | int r; | |
1925 | ||
1926 | /* Make this a NOP if IPv6 is not available */ | |
1927 | if (!socket_ipv6_is_supported()) | |
1928 | return 0; | |
1929 | ||
1930 | if (link->flags & IFF_LOOPBACK) | |
1931 | return 0; | |
1932 | ||
1933 | if (link->network->ipv6_dad_transmits < 0) | |
1934 | return 0; | |
1935 | ||
1936 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); | |
1937 | ||
1938 | xsprintf(buf, "%u", link->network->ipv6_dad_transmits); | |
1939 | ||
1940 | r = write_string_file(p, buf, 0); | |
1941 | if (r < 0) { | |
1942 | /* If the right value is set anyway, don't complain */ | |
1943 | if (verify_one_line_file(p, buf) > 0) | |
1944 | return 0; | |
1945 | ||
1946 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); | |
1947 | } | |
1948 | ||
1949 | return 0; | |
1950 | } | |
1951 | ||
a748b692 | 1952 | static int link_configure(Link *link) { |
02b59d57 TG |
1953 | int r; |
1954 | ||
ef1ba606 | 1955 | assert(link); |
b22d8a00 | 1956 | assert(link->network); |
8434fd5c | 1957 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 1958 | |
b98b483b AR |
1959 | r = link_set_bridge_fdb(link); |
1960 | if (r < 0) | |
1961 | return r; | |
1962 | ||
769d324c LP |
1963 | r = link_set_ipv4_forward(link); |
1964 | if (r < 0) | |
1965 | return r; | |
1966 | ||
1967 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
1968 | if (r < 0) |
1969 | return r; | |
1970 | ||
49092e22 SS |
1971 | r = link_set_ipv6_privacy_extensions(link); |
1972 | if (r < 0) | |
1973 | return r; | |
1974 | ||
4f2e437a SS |
1975 | r = link_set_ipv6_accept_ra(link); |
1976 | if (r < 0) | |
1977 | return r; | |
1978 | ||
8749cbcd SS |
1979 | r = link_set_ipv6_dad_transmits(link); |
1980 | if (r < 0) | |
1981 | return r; | |
1982 | ||
78c958f8 | 1983 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 1984 | r = ipv4ll_configure(link); |
eb34d4af TG |
1985 | if (r < 0) |
1986 | return r; | |
1987 | } | |
1988 | ||
78c958f8 | 1989 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 1990 | r = dhcp4_configure(link); |
eb34d4af TG |
1991 | if (r < 0) |
1992 | return r; | |
eb34d4af TG |
1993 | } |
1994 | ||
78c958f8 | 1995 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
1996 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
1997 | if (r < 0) | |
1998 | return r; | |
1999 | ||
2000 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
2001 | if (r < 0) | |
2002 | return r; | |
dd43110f TG |
2003 | } |
2004 | ||
78c958f8 | 2005 | if (link_dhcp6_enabled(link)) { |
de1e9928 | 2006 | r = ndisc_configure(link); |
4138fb2c PF |
2007 | if (r < 0) |
2008 | return r; | |
2009 | } | |
2010 | ||
ce43e484 SS |
2011 | if (link_lldp_enabled(link)) { |
2012 | r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp); | |
2013 | if (r < 0) | |
2014 | return r; | |
2015 | ||
2016 | r = sd_lldp_attach_event(link->lldp, NULL, 0); | |
2017 | if (r < 0) | |
2018 | return r; | |
49699bac SS |
2019 | |
2020 | r = sd_lldp_set_callback(link->lldp, | |
2021 | lldp_handler, link); | |
2022 | if (r < 0) | |
2023 | return r; | |
ce43e484 SS |
2024 | } |
2025 | ||
a61bb41c | 2026 | if (link_has_carrier(link)) { |
1e9be60b TG |
2027 | r = link_acquire_conf(link); |
2028 | if (r < 0) | |
2029 | return r; | |
cc544d5f | 2030 | } |
1e9be60b | 2031 | |
3f265037 | 2032 | return link_enter_join_netdev(link); |
505f8da7 TG |
2033 | } |
2034 | ||
1c4baffc | 2035 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 2036 | void *userdata) { |
5da8149f | 2037 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 2038 | Network *network; |
505f8da7 TG |
2039 | int r; |
2040 | ||
2041 | assert(link); | |
2042 | assert(link->ifname); | |
2043 | assert(link->manager); | |
2044 | ||
8434fd5c | 2045 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 2046 | return 1; |
505f8da7 | 2047 | |
6a7a4e4d | 2048 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 2049 | |
0d4ad91d AR |
2050 | r = link_new_bound_by_list(link); |
2051 | if (r < 0) | |
2052 | return r; | |
2053 | ||
2054 | r = link_handle_bound_by_list(link); | |
2055 | if (r < 0) | |
2056 | return r; | |
2057 | ||
3c9b8860 TG |
2058 | r = network_get(link->manager, link->udev_device, link->ifname, |
2059 | &link->mac, &network); | |
57bd6899 TG |
2060 | if (r == -ENOENT) { |
2061 | link_enter_unmanaged(link); | |
5da8149f | 2062 | return 1; |
57bd6899 TG |
2063 | } else if (r < 0) |
2064 | return r; | |
505f8da7 | 2065 | |
bd2efe92 | 2066 | if (link->flags & IFF_LOOPBACK) { |
d0d6a4cd | 2067 | if (network->link_local != ADDRESS_FAMILY_NO) |
6a7a4e4d | 2068 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); |
78c958f8 | 2069 | |
cb9fc36a | 2070 | if (network->dhcp != ADDRESS_FAMILY_NO) |
6a7a4e4d | 2071 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); |
78c958f8 TG |
2072 | |
2073 | if (network->dhcp_server) | |
6a7a4e4d | 2074 | log_link_debug(link, "Ignoring DHCP server for loopback link"); |
bd2efe92 TG |
2075 | } |
2076 | ||
505f8da7 TG |
2077 | r = network_apply(link->manager, network, link); |
2078 | if (r < 0) | |
2079 | return r; | |
2080 | ||
0d4ad91d AR |
2081 | r = link_new_bound_to_list(link); |
2082 | if (r < 0) | |
2083 | return r; | |
2084 | ||
a748b692 TG |
2085 | r = link_configure(link); |
2086 | if (r < 0) | |
2087 | return r; | |
2088 | ||
5da8149f | 2089 | return 1; |
505f8da7 TG |
2090 | } |
2091 | ||
4f561e8e | 2092 | int link_initialized(Link *link, struct udev_device *device) { |
1c4baffc | 2093 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f561e8e TG |
2094 | int r; |
2095 | ||
2096 | assert(link); | |
2097 | assert(link->manager); | |
2098 | assert(link->manager->rtnl); | |
2099 | assert(device); | |
2100 | ||
8434fd5c | 2101 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2102 | return 0; |
2103 | ||
679b3605 TG |
2104 | if (link->udev_device) |
2105 | return 0; | |
2106 | ||
79008bdd | 2107 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
2108 | |
2109 | link->udev_device = udev_device_ref(device); | |
2110 | ||
3c9b8860 TG |
2111 | /* udev has initialized the link, but we don't know if we have yet |
2112 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2113 | * when it returns we know that the pending NEWLINKs have already been | |
2114 | * processed and that we are up-to-date */ | |
4f561e8e | 2115 | |
3c9b8860 TG |
2116 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2117 | link->ifindex); | |
4f561e8e TG |
2118 | if (r < 0) |
2119 | return r; | |
2120 | ||
1c4baffc | 2121 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 2122 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
2123 | if (r < 0) |
2124 | return r; | |
2125 | ||
5da8149f TG |
2126 | link_ref(link); |
2127 | ||
4f561e8e TG |
2128 | return 0; |
2129 | } | |
2130 | ||
1c4baffc | 2131 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
2132 | Link *link; |
2133 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
2134 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
2135 | int r; | |
2136 | ||
2137 | assert(m); | |
fbbeb65a | 2138 | assert(m->rtnl); |
505f8da7 TG |
2139 | assert(message); |
2140 | assert(ret); | |
2141 | ||
2142 | r = link_new(m, message, ret); | |
2143 | if (r < 0) | |
2144 | return r; | |
2145 | ||
2146 | link = *ret; | |
2147 | ||
6a7a4e4d | 2148 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2149 | |
75f86906 | 2150 | if (detect_container() <= 0) { |
505f8da7 | 2151 | /* not in a container, udev will be around */ |
ae06ab10 | 2152 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 2153 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
5c416fc4 TG |
2154 | if (!device) { |
2155 | r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
2156 | goto failed; | |
2157 | } | |
505f8da7 | 2158 | |
3c4cb064 | 2159 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 2160 | /* not yet ready */ |
79008bdd | 2161 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2162 | return 0; |
3c4cb064 | 2163 | } |
505f8da7 | 2164 | |
4f561e8e TG |
2165 | r = link_initialized(link, device); |
2166 | if (r < 0) | |
5c416fc4 | 2167 | goto failed; |
4f561e8e | 2168 | } else { |
5da8149f TG |
2169 | /* we are calling a callback directly, so must take a ref */ |
2170 | link_ref(link); | |
2171 | ||
4f561e8e TG |
2172 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
2173 | if (r < 0) | |
5c416fc4 | 2174 | goto failed; |
4f561e8e | 2175 | } |
505f8da7 | 2176 | |
a748b692 | 2177 | return 0; |
5c416fc4 TG |
2178 | failed: |
2179 | link_enter_failed(link); | |
2180 | return r; | |
a748b692 TG |
2181 | } |
2182 | ||
9c0a72f9 TG |
2183 | static int link_carrier_gained(Link *link) { |
2184 | int r; | |
2185 | ||
2186 | assert(link); | |
2187 | ||
2188 | if (link->network) { | |
2189 | r = link_acquire_conf(link); | |
2190 | if (r < 0) { | |
2191 | link_enter_failed(link); | |
2192 | return r; | |
2193 | } | |
2194 | } | |
2195 | ||
0d4ad91d AR |
2196 | r = link_handle_bound_by_list(link); |
2197 | if (r < 0) | |
2198 | return r; | |
2199 | ||
9c0a72f9 TG |
2200 | return 0; |
2201 | } | |
2202 | ||
2203 | static int link_carrier_lost(Link *link) { | |
2204 | int r; | |
2205 | ||
2206 | assert(link); | |
2207 | ||
2208 | r = link_stop_clients(link); | |
2209 | if (r < 0) { | |
2210 | link_enter_failed(link); | |
2211 | return r; | |
2212 | } | |
2213 | ||
0d4ad91d AR |
2214 | r = link_handle_bound_by_list(link); |
2215 | if (r < 0) | |
2216 | return r; | |
2217 | ||
9c0a72f9 TG |
2218 | return 0; |
2219 | } | |
2220 | ||
2221 | int link_carrier_reset(Link *link) { | |
2222 | int r; | |
2223 | ||
2224 | assert(link); | |
2225 | ||
2226 | if (link_has_carrier(link)) { | |
2227 | r = link_carrier_lost(link); | |
2228 | if (r < 0) | |
2229 | return r; | |
2230 | ||
2231 | r = link_carrier_gained(link); | |
2232 | if (r < 0) | |
2233 | return r; | |
2234 | ||
6a7a4e4d | 2235 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2236 | } |
2237 | ||
2238 | return 0; | |
2239 | } | |
2240 | ||
2241 | ||
1c4baffc | 2242 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 2243 | struct ether_addr mac; |
ca4e095a | 2244 | const char *ifname; |
afe7fd56 | 2245 | uint32_t mtu; |
a61bb41c | 2246 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
2247 | int r; |
2248 | ||
dd3efc09 | 2249 | assert(link); |
b8941f74 | 2250 | assert(link->ifname); |
22936833 TG |
2251 | assert(m); |
2252 | ||
7619683b TG |
2253 | if (link->state == LINK_STATE_LINGER) { |
2254 | link_ref(link); | |
6a7a4e4d | 2255 | log_link_info(link, "Link readded"); |
e331e246 | 2256 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
2257 | |
2258 | r = link_new_carrier_maps(link); | |
2259 | if (r < 0) | |
2260 | return r; | |
7619683b TG |
2261 | } |
2262 | ||
1c4baffc | 2263 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2264 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 2265 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 2266 | |
0d4ad91d AR |
2267 | link_free_carrier_maps(link); |
2268 | ||
2fc09a9c DM |
2269 | r = free_and_strdup(&link->ifname, ifname); |
2270 | if (r < 0) | |
2271 | return r; | |
0d4ad91d AR |
2272 | |
2273 | r = link_new_carrier_maps(link); | |
2274 | if (r < 0) | |
2275 | return r; | |
b8941f74 TG |
2276 | } |
2277 | ||
1c4baffc | 2278 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2279 | if (r >= 0 && mtu > 0) { |
2280 | link->mtu = mtu; | |
2281 | if (!link->original_mtu) { | |
2282 | link->original_mtu = mtu; | |
6a7a4e4d | 2283 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2284 | } |
2285 | ||
2286 | if (link->dhcp_client) { | |
3c9b8860 TG |
2287 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2288 | link->mtu); | |
afe7fd56 | 2289 | if (r < 0) { |
6a7a4e4d | 2290 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
2291 | return r; |
2292 | } | |
2293 | } | |
9842de0d | 2294 | } |
69629de9 | 2295 | |
e9189a1f TG |
2296 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2297 | set, simply ignore them. */ | |
1c4baffc | 2298 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2299 | if (r >= 0) { |
3c9b8860 TG |
2300 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2301 | ETH_ALEN)) { | |
c49b33ac | 2302 | |
3c9b8860 TG |
2303 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2304 | ETH_ALEN); | |
c49b33ac | 2305 | |
79008bdd | 2306 | log_link_debug(link, "MAC address: " |
20861203 TG |
2307 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
2308 | mac.ether_addr_octet[0], | |
2309 | mac.ether_addr_octet[1], | |
2310 | mac.ether_addr_octet[2], | |
2311 | mac.ether_addr_octet[3], | |
2312 | mac.ether_addr_octet[4], | |
2313 | mac.ether_addr_octet[5]); | |
c49b33ac | 2314 | |
20861203 TG |
2315 | if (link->ipv4ll) { |
2316 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
2317 | if (r < 0) |
2318 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 2319 | } |
c49b33ac | 2320 | |
20861203 | 2321 | if (link->dhcp_client) { |
3c9b8860 | 2322 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
2323 | (const uint8_t *) &link->mac, |
2324 | sizeof (link->mac), | |
2325 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2326 | if (r < 0) |
2327 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
c49b33ac | 2328 | } |
4138fb2c PF |
2329 | |
2330 | if (link->dhcp6_client) { | |
2331 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
2332 | (const uint8_t *) &link->mac, |
2333 | sizeof (link->mac), | |
2334 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2335 | if (r < 0) |
2336 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
4138fb2c | 2337 | } |
c49b33ac | 2338 | } |
4f882b2a TG |
2339 | } |
2340 | ||
a61bb41c TG |
2341 | had_carrier = link_has_carrier(link); |
2342 | ||
2343 | r = link_update_flags(link, m); | |
2344 | if (r < 0) | |
2345 | return r; | |
2346 | ||
2347 | carrier_gained = !had_carrier && link_has_carrier(link); | |
2348 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2349 | ||
2350 | if (carrier_gained) { | |
6a7a4e4d | 2351 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2352 | |
9c0a72f9 TG |
2353 | r = link_carrier_gained(link); |
2354 | if (r < 0) | |
2355 | return r; | |
a61bb41c | 2356 | } else if (carrier_lost) { |
6a7a4e4d | 2357 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2358 | |
9c0a72f9 TG |
2359 | r = link_carrier_lost(link); |
2360 | if (r < 0) | |
a61bb41c | 2361 | return r; |
9c0a72f9 | 2362 | |
a61bb41c TG |
2363 | } |
2364 | ||
2365 | return 0; | |
dd3efc09 | 2366 | } |
fe8db0c5 TG |
2367 | |
2368 | int link_save(Link *link) { | |
68a8723c | 2369 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2370 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2371 | const char *admin_state, *oper_state; |
e7780c8d TG |
2372 | Address *a; |
2373 | Iterator i; | |
fe8db0c5 TG |
2374 | int r; |
2375 | ||
2376 | assert(link); | |
2377 | assert(link->state_file); | |
68a8723c | 2378 | assert(link->lease_file); |
bbf7c048 TG |
2379 | assert(link->manager); |
2380 | ||
370e9930 TG |
2381 | if (link->state == LINK_STATE_LINGER) { |
2382 | unlink(link->state_file); | |
2383 | return 0; | |
2384 | } | |
2385 | ||
deb2e523 TG |
2386 | admin_state = link_state_to_string(link->state); |
2387 | assert(admin_state); | |
2388 | ||
e375dcde TG |
2389 | oper_state = link_operstate_to_string(link->operstate); |
2390 | assert(oper_state); | |
deb2e523 | 2391 | |
fe8db0c5 TG |
2392 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2393 | if (r < 0) | |
6a7a4e4d | 2394 | goto fail; |
fe8db0c5 TG |
2395 | |
2396 | fchmod(fileno(f), 0644); | |
2397 | ||
2398 | fprintf(f, | |
2399 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2400 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
2401 | "OPER_STATE=%s\n", |
2402 | admin_state, oper_state); | |
fe8db0c5 | 2403 | |
bcb7a07e | 2404 | if (link->network) { |
ea352b40 LP |
2405 | char **address, **domain; |
2406 | bool space; | |
07bdc70d PF |
2407 | sd_dhcp6_lease *dhcp6_lease = NULL; |
2408 | ||
2409 | if (link->dhcp6_client) { | |
2410 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, | |
2411 | &dhcp6_lease); | |
2412 | if (r < 0) | |
2413 | log_link_debug(link, "No DHCPv6 lease"); | |
2414 | } | |
b0e39c82 | 2415 | |
adc5b2e2 TG |
2416 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2417 | ||
b0e39c82 | 2418 | fputs("DNS=", f); |
ea352b40 LP |
2419 | space = false; |
2420 | STRV_FOREACH(address, link->network->dns) { | |
2421 | if (space) | |
2422 | fputc(' ', f); | |
2423 | fputs(*address, f); | |
2424 | space = true; | |
2425 | } | |
d5314fff | 2426 | |
b0e39c82 TG |
2427 | if (link->network->dhcp_dns && |
2428 | link->dhcp_lease) { | |
2429 | const struct in_addr *addresses; | |
2430 | ||
2431 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
2432 | if (r > 0) { | |
ea352b40 LP |
2433 | if (space) |
2434 | fputc(' ', f); | |
b0e39c82 | 2435 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2436 | space = true; |
2437 | } | |
2438 | } | |
2439 | ||
2440 | if (link->network->dhcp_dns && dhcp6_lease) { | |
2441 | struct in6_addr *in6_addrs; | |
2442 | ||
2443 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
2444 | if (r > 0) { | |
2445 | if (space) | |
2446 | fputc(' ', f); | |
2447 | serialize_in6_addrs(f, in6_addrs, r); | |
b0e39c82 TG |
2448 | } |
2449 | } | |
2450 | ||
b0e39c82 TG |
2451 | fputs("\n", f); |
2452 | ||
2453 | fprintf(f, "NTP="); | |
ea352b40 LP |
2454 | space = false; |
2455 | STRV_FOREACH(address, link->network->ntp) { | |
2456 | if (space) | |
2457 | fputc(' ', f); | |
2458 | fputs(*address, f); | |
2459 | space = true; | |
2460 | } | |
d5314fff | 2461 | |
b0e39c82 TG |
2462 | if (link->network->dhcp_ntp && |
2463 | link->dhcp_lease) { | |
2464 | const struct in_addr *addresses; | |
2465 | ||
2466 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
2467 | if (r > 0) { | |
ea352b40 LP |
2468 | if (space) |
2469 | fputc(' ', f); | |
b0e39c82 | 2470 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2471 | space = true; |
2472 | } | |
2473 | } | |
2474 | ||
2475 | if (link->network->dhcp_ntp && dhcp6_lease) { | |
2476 | struct in6_addr *in6_addrs; | |
2477 | char **hosts; | |
2478 | char **hostname; | |
2479 | ||
2480 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
2481 | &in6_addrs); | |
2482 | if (r > 0) { | |
2483 | if (space) | |
2484 | fputc(' ', f); | |
2485 | serialize_in6_addrs(f, in6_addrs, r); | |
2486 | space = true; | |
2487 | } | |
2488 | ||
2489 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
2490 | if (r > 0) { | |
2491 | STRV_FOREACH(hostname, hosts) { | |
2492 | if (space) | |
2493 | fputc(' ', f); | |
2494 | fputs(*hostname, f); | |
2495 | space = true; | |
2496 | } | |
b0e39c82 TG |
2497 | } |
2498 | } | |
2499 | ||
b0e39c82 | 2500 | fputs("\n", f); |
bd8f6538 | 2501 | |
6192b846 | 2502 | fprintf(f, "DOMAINS="); |
ea352b40 LP |
2503 | space = false; |
2504 | STRV_FOREACH(domain, link->network->domains) { | |
2505 | if (space) | |
2506 | fputc(' ', f); | |
2507 | fputs(*domain, f); | |
2508 | space = true; | |
2509 | } | |
d5314fff | 2510 | |
ad0734e8 | 2511 | if (link->network->dhcp_domains && |
9b4d1882 TG |
2512 | link->dhcp_lease) { |
2513 | const char *domainname; | |
2514 | ||
2515 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
6192b846 | 2516 | if (r >= 0) { |
ea352b40 LP |
2517 | if (space) |
2518 | fputc(' ', f); | |
6192b846 | 2519 | fputs(domainname, f); |
07bdc70d PF |
2520 | space = true; |
2521 | } | |
2522 | } | |
2523 | ||
2524 | if (link->network->dhcp_domains && dhcp6_lease) { | |
2525 | char **domains; | |
2526 | ||
2527 | r = sd_dhcp6_lease_get_domains(dhcp6_lease, &domains); | |
2528 | if (r >= 0) { | |
2529 | STRV_FOREACH(domain, domains) { | |
2530 | if (space) | |
2531 | fputc(' ', f); | |
2532 | fputs(*domain, f); | |
2533 | space = true; | |
2534 | } | |
6192b846 | 2535 | } |
9b4d1882 TG |
2536 | } |
2537 | ||
6192b846 TG |
2538 | fputs("\n", f); |
2539 | ||
67272d15 TG |
2540 | fprintf(f, "WILDCARD_DOMAIN=%s\n", |
2541 | yes_no(link->network->wildcard_domain)); | |
2542 | ||
3c9b8860 | 2543 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 2544 | resolve_support_to_string(link->network->llmnr)); |
e7780c8d TG |
2545 | |
2546 | fprintf(f, "ADDRESSES="); | |
2547 | space = false; | |
2548 | SET_FOREACH(a, link->addresses, i) { | |
2549 | _cleanup_free_ char *address_str = NULL; | |
2550 | ||
2551 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
2552 | if (r < 0) | |
2553 | goto fail; | |
2554 | ||
e7780c8d TG |
2555 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
2556 | space = true; | |
2557 | } | |
2558 | ||
2559 | fputs("\n", f); | |
bcb7a07e | 2560 | } |
7374f9d8 | 2561 | |
0d4ad91d AR |
2562 | if (!hashmap_isempty(link->bound_to_links)) { |
2563 | Link *carrier; | |
0d4ad91d AR |
2564 | bool space = false; |
2565 | ||
2566 | fputs("CARRIER_BOUND_TO=", f); | |
2567 | HASHMAP_FOREACH(carrier, link->bound_to_links, i) { | |
2568 | if (space) | |
2569 | fputc(' ', f); | |
2570 | fputs(carrier->ifname, f); | |
2571 | space = true; | |
2572 | } | |
2573 | ||
2574 | fputs("\n", f); | |
2575 | } | |
2576 | ||
2577 | if (!hashmap_isempty(link->bound_by_links)) { | |
2578 | Link *carrier; | |
0d4ad91d AR |
2579 | bool space = false; |
2580 | ||
2581 | fputs("CARRIER_BOUND_BY=", f); | |
0d4ad91d AR |
2582 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
2583 | if (space) | |
2584 | fputc(' ', f); | |
2585 | fputs(carrier->ifname, f); | |
2586 | space = true; | |
2587 | } | |
2588 | ||
2589 | fputs("\n", f); | |
2590 | } | |
2591 | ||
8eb9058d LP |
2592 | if (link->dhcp_lease) { |
2593 | const char *tz = NULL; | |
2594 | ||
2595 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); | |
2596 | if (r >= 0) | |
2597 | fprintf(f, "TIMEZONE=%s\n", tz); | |
2598 | } | |
2599 | ||
fe8db0c5 | 2600 | if (link->dhcp_lease) { |
d9876a52 TG |
2601 | assert(link->network); |
2602 | ||
bd91b83e | 2603 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 2604 | if (r < 0) |
c2d6bd61 | 2605 | goto fail; |
fe8db0c5 | 2606 | |
7374f9d8 | 2607 | fprintf(f, |
b0e39c82 TG |
2608 | "DHCP_LEASE=%s\n", |
2609 | link->lease_file); | |
deb2e523 | 2610 | } else |
68a8723c | 2611 | unlink(link->lease_file); |
fe8db0c5 | 2612 | |
49699bac SS |
2613 | if (link->lldp) { |
2614 | assert(link->network); | |
2615 | ||
2616 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
2617 | if (r < 0) | |
2618 | goto fail; | |
2619 | ||
2620 | fprintf(f, | |
2621 | "LLDP_FILE=%s\n", | |
2622 | link->lldp_file); | |
2623 | } else | |
2624 | unlink(link->lldp_file); | |
2625 | ||
c2d6bd61 LP |
2626 | r = fflush_and_check(f); |
2627 | if (r < 0) | |
2628 | goto fail; | |
fe8db0c5 | 2629 | |
c2d6bd61 | 2630 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 2631 | r = -errno; |
c2d6bd61 | 2632 | goto fail; |
fe8db0c5 TG |
2633 | } |
2634 | ||
c2d6bd61 | 2635 | return 0; |
dacd6cee | 2636 | |
c2d6bd61 | 2637 | fail: |
6a7a4e4d | 2638 | (void) unlink(link->state_file); |
6a7a4e4d LP |
2639 | if (temp_path) |
2640 | (void) unlink(temp_path); | |
2641 | ||
dacd6cee | 2642 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
2643 | } |
2644 | ||
84de38c5 TG |
2645 | /* The serialized state in /run is no longer up-to-date. */ |
2646 | void link_dirty(Link *link) { | |
2647 | int r; | |
2648 | ||
2649 | assert(link); | |
2650 | ||
2651 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); | |
2652 | if (r < 0) | |
2653 | /* allocation errors are ignored */ | |
2654 | return; | |
2655 | ||
2656 | r = set_put(link->manager->dirty_links, link); | |
2657 | if (r < 0) | |
2658 | /* allocation errors are ignored */ | |
2659 | return; | |
2660 | ||
2661 | link_ref(link); | |
2662 | } | |
2663 | ||
2664 | /* The serialized state in /run is up-to-date */ | |
2665 | void link_clean(Link *link) { | |
2666 | assert(link); | |
2667 | assert(link->manager); | |
2668 | ||
2669 | set_remove(link->manager->dirty_links, link); | |
2670 | link_unref(link); | |
2671 | } | |
2672 | ||
fe8db0c5 | 2673 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 2674 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
2675 | [LINK_STATE_ENSLAVING] = "configuring", |
2676 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
2677 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
2678 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 2679 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2680 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2681 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2682 | }; |
2683 | ||
2684 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
2685 | |
2686 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
2687 | [LINK_OPERSTATE_OFF] = "off", |
2688 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
2689 | [LINK_OPERSTATE_DORMANT] = "dormant", |
2690 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
2691 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
2692 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
2693 | }; | |
2694 | ||
2695 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |