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f579559b TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <netinet/ether.h> | |
23 | #include <linux/if.h> | |
4cc7a82c | 24 | #include <unistd.h> |
f579559b | 25 | |
b5efdb8a | 26 | #include "alloc-util.h" |
1346b1f0 | 27 | #include "bus-util.h" |
bd91b83e | 28 | #include "dhcp-lease-internal.h" |
3ffd4af2 | 29 | #include "fd-util.h" |
cf1d700d TG |
30 | #include "fileio.h" |
31 | #include "netlink-util.h" | |
c6f7c917 | 32 | #include "network-internal.h" |
3ffd4af2 LP |
33 | #include "networkd-link.h" |
34 | #include "networkd-netdev.h" | |
cf1d700d TG |
35 | #include "set.h" |
36 | #include "socket-util.h" | |
15a5e950 | 37 | #include "stdio-util.h" |
8b43440b | 38 | #include "string-table.h" |
cf1d700d TG |
39 | #include "udev-util.h" |
40 | #include "util.h" | |
41 | #include "virt.h" | |
fc2f9534 | 42 | |
a97dcc12 | 43 | bool link_dhcp6_enabled(Link *link) { |
78c958f8 TG |
44 | if (link->flags & IFF_LOOPBACK) |
45 | return false; | |
46 | ||
47 | if (!link->network) | |
48 | return false; | |
49 | ||
e0ee46f2 | 50 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
51 | } |
52 | ||
a97dcc12 | 53 | bool link_dhcp4_enabled(Link *link) { |
78c958f8 TG |
54 | if (link->flags & IFF_LOOPBACK) |
55 | return false; | |
56 | ||
57 | if (!link->network) | |
58 | return false; | |
59 | ||
e0ee46f2 | 60 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
61 | } |
62 | ||
a97dcc12 | 63 | bool link_dhcp4_server_enabled(Link *link) { |
78c958f8 TG |
64 | if (link->flags & IFF_LOOPBACK) |
65 | return false; | |
66 | ||
67 | if (!link->network) | |
68 | return false; | |
69 | ||
70 | return link->network->dhcp_server; | |
71 | } | |
72 | ||
a97dcc12 | 73 | bool link_ipv4ll_enabled(Link *link) { |
78c958f8 TG |
74 | if (link->flags & IFF_LOOPBACK) |
75 | return false; | |
76 | ||
77 | if (!link->network) | |
78 | return false; | |
79 | ||
e0ee46f2 | 80 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
81 | } |
82 | ||
83 | bool link_ipv6ll_enabled(Link *link) { | |
84 | if (link->flags & IFF_LOOPBACK) | |
85 | return false; | |
86 | ||
87 | if (!link->network) | |
88 | return false; | |
89 | ||
e0ee46f2 | 90 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
91 | } |
92 | ||
a97dcc12 | 93 | bool link_lldp_enabled(Link *link) { |
ce43e484 SS |
94 | if (link->flags & IFF_LOOPBACK) |
95 | return false; | |
96 | ||
97 | if (!link->network) | |
98 | return false; | |
99 | ||
5a8bcb67 | 100 | if (link->network->bridge) |
ce43e484 SS |
101 | return false; |
102 | ||
103 | return link->network->lldp; | |
104 | } | |
105 | ||
769d324c | 106 | static bool link_ipv4_forward_enabled(Link *link) { |
5a8bcb67 LP |
107 | if (link->flags & IFF_LOOPBACK) |
108 | return false; | |
109 | ||
110 | if (!link->network) | |
111 | return false; | |
112 | ||
e0ee46f2 | 113 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
114 | } |
115 | ||
116 | static bool link_ipv6_forward_enabled(Link *link) { | |
117 | if (link->flags & IFF_LOOPBACK) | |
118 | return false; | |
119 | ||
120 | if (!link->network) | |
121 | return false; | |
122 | ||
e0ee46f2 | 123 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
124 | } |
125 | ||
1f0d9695 | 126 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
49092e22 | 127 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 128 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
129 | |
130 | if (!link->network) | |
1f0d9695 | 131 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
132 | |
133 | return link->network->ipv6_privacy_extensions; | |
134 | } | |
135 | ||
84de38c5 TG |
136 | void link_update_operstate(Link *link) { |
137 | LinkOperationalState operstate; | |
138 | assert(link); | |
139 | ||
140 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
141 | operstate = LINK_OPERSTATE_DORMANT; | |
142 | else if (link_has_carrier(link)) { | |
143 | Address *address; | |
144 | uint8_t scope = RT_SCOPE_NOWHERE; | |
145 | Iterator i; | |
146 | ||
147 | /* if we have carrier, check what addresses we have */ | |
148 | SET_FOREACH(address, link->addresses, i) { | |
149 | if (!address_is_ready(address)) | |
150 | continue; | |
151 | ||
152 | if (address->scope < scope) | |
153 | scope = address->scope; | |
154 | } | |
155 | ||
156 | /* for operstate we also take foreign addresses into account */ | |
157 | SET_FOREACH(address, link->addresses_foreign, i) { | |
158 | if (!address_is_ready(address)) | |
159 | continue; | |
160 | ||
161 | if (address->scope < scope) | |
162 | scope = address->scope; | |
163 | } | |
164 | ||
165 | if (scope < RT_SCOPE_SITE) | |
166 | /* universally accessible addresses found */ | |
167 | operstate = LINK_OPERSTATE_ROUTABLE; | |
168 | else if (scope < RT_SCOPE_HOST) | |
169 | /* only link or site local addresses found */ | |
170 | operstate = LINK_OPERSTATE_DEGRADED; | |
171 | else | |
172 | /* no useful addresses found */ | |
173 | operstate = LINK_OPERSTATE_CARRIER; | |
174 | } else if (link->flags & IFF_UP) | |
175 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
176 | else | |
177 | operstate = LINK_OPERSTATE_OFF; | |
178 | ||
179 | if (link->operstate != operstate) { | |
180 | link->operstate = operstate; | |
181 | link_send_changed(link, "OperationalState", NULL); | |
182 | link_dirty(link); | |
183 | manager_dirty(link->manager); | |
184 | } | |
185 | } | |
186 | ||
51d18171 TG |
187 | #define FLAG_STRING(string, flag, old, new) \ |
188 | (((old ^ new) & flag) \ | |
189 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
190 | : "") | |
191 | ||
1c4baffc | 192 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
193 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
194 | uint8_t operstate; | |
195 | int r; | |
196 | ||
197 | assert(link); | |
198 | ||
199 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
200 | if (r < 0) |
201 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 202 | |
1c4baffc | 203 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
204 | if (r < 0) |
205 | /* if we got a message without operstate, take it to mean | |
206 | the state was unchanged */ | |
207 | operstate = link->kernel_operstate; | |
208 | ||
209 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
210 | return 0; | |
211 | ||
212 | if (link->flags != flags) { | |
6a7a4e4d | 213 | 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 |
214 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
215 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
216 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
217 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
218 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
219 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
220 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
221 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
222 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
223 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
224 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
225 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
226 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
227 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
228 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
229 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
230 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
231 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
232 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
233 | ||
234 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
235 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
236 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
237 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
238 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
239 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
240 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
241 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
242 | ||
243 | /* link flags are currently at most 18 bits, let's align to | |
244 | * printing 20 */ | |
245 | if (unknown_flags_added) | |
79008bdd | 246 | log_link_debug(link, |
6a7a4e4d | 247 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
248 | unknown_flags_added); |
249 | ||
250 | if (unknown_flags_removed) | |
79008bdd | 251 | log_link_debug(link, |
6a7a4e4d | 252 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
253 | unknown_flags_removed); |
254 | } | |
255 | ||
256 | link->flags = flags; | |
257 | link->kernel_operstate = operstate; | |
258 | ||
84de38c5 | 259 | link_update_operstate(link); |
51d18171 TG |
260 | |
261 | return 0; | |
262 | } | |
263 | ||
1c4baffc | 264 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 265 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 266 | uint16_t type; |
ca4e095a | 267 | const char *ifname; |
505f8da7 | 268 | int r, ifindex; |
f579559b | 269 | |
0c2f9b84 | 270 | assert(manager); |
505f8da7 | 271 | assert(message); |
f579559b TG |
272 | assert(ret); |
273 | ||
1c4baffc | 274 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
275 | if (r < 0) |
276 | return r; | |
277 | else if (type != RTM_NEWLINK) | |
278 | return -EINVAL; | |
279 | ||
280 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
281 | if (r < 0) | |
282 | return r; | |
283 | else if (ifindex <= 0) | |
284 | return -EINVAL; | |
285 | ||
1c4baffc | 286 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
287 | if (r < 0) |
288 | return r; | |
289 | ||
f579559b TG |
290 | link = new0(Link, 1); |
291 | if (!link) | |
292 | return -ENOMEM; | |
293 | ||
14b746f7 | 294 | link->n_ref = 1; |
5a3eb5a7 | 295 | link->manager = manager; |
8434fd5c | 296 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 297 | link->rtnl_extended_attrs = true; |
505f8da7 TG |
298 | link->ifindex = ifindex; |
299 | link->ifname = strdup(ifname); | |
300 | if (!link->ifname) | |
301 | return -ENOMEM; | |
f579559b | 302 | |
1c4baffc | 303 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 304 | if (r < 0) |
79008bdd | 305 | log_link_debug(link, "MAC address not found for new device, continuing without"); |
512922f8 | 306 | |
3c9b8860 TG |
307 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", |
308 | link->ifindex); | |
fe8db0c5 | 309 | if (r < 0) |
315db1a8 | 310 | return -ENOMEM; |
fe8db0c5 | 311 | |
3c9b8860 TG |
312 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", |
313 | link->ifindex); | |
68a8723c TG |
314 | if (r < 0) |
315 | return -ENOMEM; | |
316 | ||
49699bac SS |
317 | r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", |
318 | link->ifindex); | |
319 | if (r < 0) | |
320 | return -ENOMEM; | |
321 | ||
322 | ||
d5099efc | 323 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
324 | if (r < 0) |
325 | return r; | |
326 | ||
327 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
328 | if (r < 0) |
329 | return r; | |
330 | ||
51d18171 TG |
331 | r = link_update_flags(link, message); |
332 | if (r < 0) | |
333 | return r; | |
334 | ||
f579559b TG |
335 | *ret = link; |
336 | link = NULL; | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
14b746f7 | 341 | static void link_free(Link *link) { |
428fd0a7 | 342 | Address *address; |
0d4ad91d AR |
343 | Iterator i; |
344 | Link *carrier; | |
428fd0a7 | 345 | |
f579559b TG |
346 | if (!link) |
347 | return; | |
348 | ||
cf1d700d TG |
349 | while (!set_isempty(link->addresses)) |
350 | address_free(set_first(link->addresses)); | |
351 | ||
352 | set_free(link->addresses); | |
428fd0a7 | 353 | |
adda1ed9 TG |
354 | while (!set_isempty(link->addresses_foreign)) |
355 | address_free(set_first(link->addresses_foreign)); | |
356 | ||
357 | set_free(link->addresses_foreign); | |
358 | ||
11bf3cce LP |
359 | while ((address = link->pool_addresses)) { |
360 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
361 | address_free(address); | |
362 | } | |
363 | ||
bfcdba8d | 364 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 365 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 366 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 367 | |
68a8723c TG |
368 | free(link->lease_file); |
369 | ||
07e10d1a TG |
370 | sd_lldp_free(link->lldp); |
371 | ||
49699bac SS |
372 | free(link->lldp_file); |
373 | ||
56cd007a | 374 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 375 | sd_dhcp6_client_unref(link->dhcp6_client); |
de1e9928 | 376 | sd_ndisc_unref(link->ndisc_router_discovery); |
4138fb2c | 377 | |
28aeb07f | 378 | if (link->manager) |
ae06ab10 | 379 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 380 | |
c166a070 | 381 | free(link->ifname); |
68a8723c | 382 | |
84de38c5 | 383 | (void)unlink(link->state_file); |
fe8db0c5 | 384 | free(link->state_file); |
c166a070 | 385 | |
b5db00e5 UTL |
386 | udev_device_unref(link->udev_device); |
387 | ||
0d4ad91d AR |
388 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
389 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
390 | hashmap_free(link->bound_to_links); | |
391 | ||
392 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
393 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
394 | hashmap_free(link->bound_by_links); | |
395 | ||
f579559b TG |
396 | free(link); |
397 | } | |
398 | ||
14b746f7 | 399 | Link *link_unref(Link *link) { |
957325b7 TG |
400 | if (!link) |
401 | return NULL; | |
402 | ||
403 | assert(link->n_ref > 0); | |
404 | ||
405 | link->n_ref --; | |
406 | ||
407 | if (link->n_ref > 0) | |
408 | return NULL; | |
409 | ||
410 | link_free(link); | |
14b746f7 TG |
411 | |
412 | return NULL; | |
413 | } | |
414 | ||
415 | Link *link_ref(Link *link) { | |
957325b7 TG |
416 | if (!link) |
417 | return NULL; | |
418 | ||
419 | assert(link->n_ref > 0); | |
420 | ||
421 | link->n_ref ++; | |
14b746f7 TG |
422 | |
423 | return link; | |
424 | } | |
425 | ||
11a7f229 TG |
426 | int link_get(Manager *m, int ifindex, Link **ret) { |
427 | Link *link; | |
11a7f229 TG |
428 | |
429 | assert(m); | |
11a7f229 TG |
430 | assert(ifindex); |
431 | assert(ret); | |
432 | ||
ae06ab10 | 433 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
434 | if (!link) |
435 | return -ENODEV; | |
436 | ||
437 | *ret = link; | |
438 | ||
439 | return 0; | |
440 | } | |
441 | ||
e331e246 TG |
442 | static void link_set_state(Link *link, LinkState state) { |
443 | assert(link); | |
444 | ||
445 | if (link->state == state) | |
446 | return; | |
447 | ||
448 | link->state = state; | |
449 | ||
450 | link_send_changed(link, "AdministrativeState", NULL); | |
451 | ||
452 | return; | |
453 | } | |
454 | ||
57bd6899 TG |
455 | static void link_enter_unmanaged(Link *link) { |
456 | assert(link); | |
457 | ||
6a7a4e4d | 458 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 459 | |
e331e246 | 460 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 461 | |
84de38c5 | 462 | link_dirty(link); |
57bd6899 TG |
463 | } |
464 | ||
111bb8f9 TG |
465 | static int link_stop_clients(Link *link) { |
466 | int r = 0, k; | |
467 | ||
468 | assert(link); | |
469 | assert(link->manager); | |
470 | assert(link->manager->event); | |
471 | ||
472 | if (!link->network) | |
473 | return 0; | |
474 | ||
ba179154 | 475 | if (link->dhcp_client) { |
111bb8f9 | 476 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d LP |
477 | if (k < 0) |
478 | r = log_link_warning_errno(link, r, "Could not stop DHCPv4 client: %m"); | |
111bb8f9 TG |
479 | } |
480 | ||
ba179154 | 481 | if (link->ipv4ll) { |
111bb8f9 | 482 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d LP |
483 | if (k < 0) |
484 | r = log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m"); | |
dd43110f TG |
485 | } |
486 | ||
de1e9928 | 487 | if(link->ndisc_router_discovery) { |
1873a3d3 PF |
488 | if (link->dhcp6_client) { |
489 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
6a7a4e4d LP |
490 | if (k < 0) |
491 | r = log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); | |
1873a3d3 | 492 | } |
4138fb2c | 493 | |
de1e9928 | 494 | k = sd_ndisc_stop(link->ndisc_router_discovery); |
6a7a4e4d | 495 | if (k < 0) |
ceabaf0f | 496 | r = log_link_warning_errno(link, r, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
497 | } |
498 | ||
ce43e484 | 499 | if (link->lldp) { |
ce43e484 | 500 | k = sd_lldp_stop(link->lldp); |
6a7a4e4d LP |
501 | if (k < 0) |
502 | r = log_link_warning_errno(link, r, "Could not stop LLDP: %m"); | |
ce43e484 SS |
503 | } |
504 | ||
111bb8f9 TG |
505 | return r; |
506 | } | |
507 | ||
b22d8a00 | 508 | void link_enter_failed(Link *link) { |
ef1ba606 | 509 | assert(link); |
f882c247 | 510 | |
370e9930 | 511 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
512 | return; |
513 | ||
6a7a4e4d | 514 | log_link_warning(link, "Failed"); |
449f7554 | 515 | |
e331e246 | 516 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 517 | |
111bb8f9 TG |
518 | link_stop_clients(link); |
519 | ||
84de38c5 | 520 | link_dirty(link); |
f882c247 TG |
521 | } |
522 | ||
4f434938 LP |
523 | static Address* link_find_dhcp_server_address(Link *link) { |
524 | Address *address; | |
525 | ||
526 | assert(link); | |
527 | assert(link->network); | |
528 | ||
d4cdbea5 | 529 | /* The first statically configured address if there is any */ |
4f434938 LP |
530 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
531 | ||
532 | if (address->family != AF_INET) | |
533 | continue; | |
534 | ||
af93291c | 535 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
536 | continue; |
537 | ||
538 | return address; | |
539 | } | |
540 | ||
541 | /* If that didn't work, find a suitable address we got from the pool */ | |
542 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
543 | if (address->family != AF_INET) | |
544 | continue; | |
545 | ||
546 | return address; | |
547 | } | |
548 | ||
549 | return NULL; | |
550 | } | |
551 | ||
dd43110f | 552 | static int link_enter_configured(Link *link) { |
dd43110f TG |
553 | assert(link); |
554 | assert(link->network); | |
555 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
556 | ||
6a7a4e4d | 557 | log_link_info(link, "Configured"); |
dd43110f | 558 | |
e331e246 | 559 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 560 | |
84de38c5 | 561 | link_dirty(link); |
dd43110f TG |
562 | |
563 | return 0; | |
564 | } | |
565 | ||
8012cd39 TG |
566 | void link_check_ready(Link *link) { |
567 | Address *a; | |
568 | Iterator i; | |
569 | ||
3c9b8860 | 570 | assert(link); |
adda1ed9 TG |
571 | |
572 | if (!link->network) | |
573 | return; | |
3c9b8860 TG |
574 | |
575 | if (!link->static_configured) | |
576 | return; | |
577 | ||
78c958f8 | 578 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
579 | if (!link->ipv4ll_address || |
580 | !link->ipv4ll_route) | |
581 | return; | |
582 | ||
3ada37a2 PF |
583 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
584 | !link->dhcp4_configured) || | |
585 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
586 | !link->dhcp6_configured) || | |
587 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
588 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
18d29550 PF |
589 | return; |
590 | ||
8012cd39 TG |
591 | SET_FOREACH(a, link->addresses, i) |
592 | if (!address_is_ready(a)) | |
593 | return; | |
594 | ||
9fdaa992 TG |
595 | if (link->state != LINK_STATE_CONFIGURED) |
596 | link_enter_configured(link); | |
3c9b8860 TG |
597 | |
598 | return; | |
599 | } | |
600 | ||
1c4baffc | 601 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 602 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
603 | int r; |
604 | ||
3c9b8860 | 605 | assert(link->link_messages > 0); |
370e9930 TG |
606 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
607 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
608 | LINK_STATE_LINGER)); | |
f882c247 | 609 | |
3c9b8860 | 610 | link->link_messages --; |
f882c247 | 611 | |
77a008c0 | 612 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
613 | return 1; |
614 | ||
1c4baffc | 615 | r = sd_netlink_message_get_errno(m); |
c166a070 | 616 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 617 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 618 | |
3c9b8860 | 619 | if (link->link_messages == 0) { |
6a7a4e4d | 620 | log_link_debug(link, "Routes set"); |
3c9b8860 | 621 | link->static_configured = true; |
8012cd39 | 622 | link_check_ready(link); |
dd3efc09 | 623 | } |
f882c247 TG |
624 | |
625 | return 1; | |
626 | } | |
627 | ||
628 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 629 | Route *rt; |
f882c247 TG |
630 | int r; |
631 | ||
632 | assert(link); | |
633 | assert(link->network); | |
ef1ba606 | 634 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 635 | |
e331e246 | 636 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 637 | |
3d3d4255 | 638 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 639 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 640 | if (r < 0) { |
6a7a4e4d | 641 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 642 | link_enter_failed(link); |
a6cc569e TG |
643 | return r; |
644 | } | |
645 | ||
3c9b8860 | 646 | link->link_messages ++; |
8ddbeaa2 | 647 | } |
f5be5601 | 648 | |
3c9b8860 TG |
649 | if (link->link_messages == 0) { |
650 | link->static_configured = true; | |
8012cd39 | 651 | link_check_ready(link); |
431ca2ce | 652 | } else |
6a7a4e4d | 653 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
654 | |
655 | return 0; | |
656 | } | |
657 | ||
91b5f997 | 658 | int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 659 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
660 | int r; |
661 | ||
662 | assert(m); | |
663 | assert(link); | |
664 | assert(link->ifname); | |
665 | ||
5da8149f | 666 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
667 | return 1; |
668 | ||
1c4baffc | 669 | r = sd_netlink_message_get_errno(m); |
b90b025a | 670 | if (r < 0 && r != -ESRCH) |
a2fae7bb | 671 | log_link_warning_errno(link, r, "Could not drop route: %m"); |
5c1d3fc9 | 672 | |
5bdd314c | 673 | return 1; |
5c1d3fc9 UTL |
674 | } |
675 | ||
1c4baffc | 676 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 677 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
678 | int r; |
679 | ||
4958aee4 | 680 | assert(rtnl); |
f5be5601 TG |
681 | assert(m); |
682 | assert(link); | |
683 | assert(link->ifname); | |
3c9b8860 | 684 | assert(link->link_messages > 0); |
370e9930 TG |
685 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
686 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 687 | |
3c9b8860 | 688 | link->link_messages --; |
f882c247 | 689 | |
5da8149f | 690 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
691 | return 1; |
692 | ||
1c4baffc | 693 | r = sd_netlink_message_get_errno(m); |
c166a070 | 694 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 695 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 696 | else if (r >= 0) |
200a0868 | 697 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 698 | |
3c9b8860 | 699 | if (link->link_messages == 0) { |
6a7a4e4d | 700 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 701 | link_enter_set_routes(link); |
dd3efc09 | 702 | } |
f882c247 TG |
703 | |
704 | return 1; | |
705 | } | |
706 | ||
4f5f911e LP |
707 | static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
708 | _cleanup_free_ struct in_addr *addresses = NULL; | |
709 | size_t n_addresses = 0, n_allocated = 0; | |
710 | char **a; | |
711 | ||
712 | log_debug("Copying DNS server information from %s", link->ifname); | |
713 | ||
714 | if (!link->network) | |
715 | return 0; | |
716 | ||
717 | STRV_FOREACH(a, link->network->dns) { | |
718 | struct in_addr ia; | |
719 | ||
720 | /* Only look for IPv4 addresses */ | |
721 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
722 | continue; | |
723 | ||
724 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
725 | return log_oom(); | |
726 | ||
727 | addresses[n_addresses++] = ia; | |
728 | } | |
729 | ||
730 | if (link->network->dhcp_dns && | |
731 | link->dhcp_lease) { | |
732 | const struct in_addr *da = NULL; | |
733 | int n; | |
734 | ||
735 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
736 | if (n > 0) { | |
737 | ||
738 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
739 | return log_oom(); | |
740 | ||
741 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
742 | n_addresses += n; | |
743 | } | |
744 | } | |
745 | ||
746 | if (n_addresses <= 0) | |
747 | return 0; | |
748 | ||
749 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
750 | } | |
751 | ||
752 | static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { | |
753 | _cleanup_free_ struct in_addr *addresses = NULL; | |
754 | size_t n_addresses = 0, n_allocated = 0; | |
755 | char **a; | |
756 | ||
757 | if (!link->network) | |
758 | return 0; | |
759 | ||
760 | log_debug("Copying NTP server information from %s", link->ifname); | |
761 | ||
762 | STRV_FOREACH(a, link->network->ntp) { | |
763 | struct in_addr ia; | |
764 | ||
765 | /* Only look for IPv4 addresses */ | |
766 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
767 | continue; | |
768 | ||
769 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
770 | return log_oom(); | |
771 | ||
772 | addresses[n_addresses++] = ia; | |
773 | } | |
774 | ||
775 | if (link->network->dhcp_ntp && | |
776 | link->dhcp_lease) { | |
777 | const struct in_addr *da = NULL; | |
778 | int n; | |
779 | ||
780 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
781 | if (n > 0) { | |
782 | ||
783 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
784 | return log_oom(); | |
785 | ||
786 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
787 | n_addresses += n; | |
788 | } | |
789 | } | |
790 | ||
791 | if (n_addresses <= 0) | |
792 | return 0; | |
793 | ||
794 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
795 | } | |
796 | ||
f882c247 | 797 | static int link_enter_set_addresses(Link *link) { |
a6cc569e | 798 | Address *ad; |
f882c247 TG |
799 | int r; |
800 | ||
801 | assert(link); | |
802 | assert(link->network); | |
f5be5601 | 803 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 804 | |
e331e246 | 805 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 806 | |
3d3d4255 | 807 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
66669078 | 808 | r = address_configure(ad, link, &address_handler, false); |
dd3efc09 | 809 | if (r < 0) { |
5a8bcb67 | 810 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
811 | link_enter_failed(link); |
812 | return r; | |
813 | } | |
814 | ||
3c9b8860 | 815 | link->link_messages ++; |
f882c247 TG |
816 | } |
817 | ||
d4cdbea5 TG |
818 | /* now that we can figure out a default address for the dhcp server, |
819 | start it */ | |
820 | if (link_dhcp4_server_enabled(link)) { | |
d4cdbea5 | 821 | Address *address; |
4f5f911e LP |
822 | Link *uplink = NULL; |
823 | bool acquired_uplink = false; | |
d4cdbea5 TG |
824 | |
825 | address = link_find_dhcp_server_address(link); | |
826 | if (!address) { | |
6a7a4e4d | 827 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
828 | link_enter_failed(link); |
829 | return 0; | |
830 | } | |
831 | ||
61986155 | 832 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
833 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
834 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
835 | if (r < 0) |
836 | return r; | |
837 | ||
838 | /* TODO: | |
839 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
840 | &main_address->in_addr.in); | |
841 | if (r < 0) | |
842 | return r; | |
d4cdbea5 TG |
843 | */ |
844 | ||
586ac6f7 LP |
845 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
846 | r = sd_dhcp_server_set_max_lease_time( | |
847 | link->dhcp_server, | |
848 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
849 | if (r < 0) | |
850 | return r; | |
851 | } | |
852 | ||
853 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
854 | r = sd_dhcp_server_set_default_lease_time( | |
855 | link->dhcp_server, | |
856 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
857 | if (r < 0) | |
858 | return r; | |
859 | } | |
860 | ||
1a04db0f LP |
861 | if (link->network->dhcp_server_emit_dns) { |
862 | ||
4f5f911e | 863 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 864 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
865 | else { |
866 | uplink = manager_find_uplink(link->manager, link); | |
867 | acquired_uplink = true; | |
868 | ||
869 | if (!uplink) { | |
870 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
871 | r = 0; | |
872 | } else | |
873 | r = link_push_dns_to_dhcp_server(uplink, link->dhcp_server); | |
874 | } | |
875 | if (r < 0) | |
876 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
877 | } |
878 | ||
879 | ||
880 | if (link->network->dhcp_server_emit_ntp) { | |
881 | ||
4f5f911e | 882 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 883 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
884 | else { |
885 | if (!acquired_uplink) | |
886 | uplink = manager_find_uplink(link->manager, link); | |
887 | ||
888 | if (!uplink) { | |
889 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
890 | r = 0; | |
891 | } else | |
892 | r = link_push_ntp_to_dhcp_server(uplink, link->dhcp_server); | |
893 | ||
894 | } | |
895 | if (r < 0) | |
896 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
897 | } |
898 | ||
8eb9058d LP |
899 | if (link->network->dhcp_server_emit_timezone) { |
900 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 901 | const char *tz = NULL; |
8eb9058d LP |
902 | |
903 | if (link->network->dhcp_server_timezone) | |
904 | tz = link->network->dhcp_server_timezone; | |
905 | else { | |
906 | r = get_timezone(&buffer); | |
907 | if (r < 0) | |
908 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
909 | else | |
910 | tz = buffer; | |
911 | } | |
912 | ||
913 | if (tz) { | |
914 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
915 | if (r < 0) | |
916 | return r; | |
917 | } | |
918 | } | |
919 | ||
d4cdbea5 TG |
920 | r = sd_dhcp_server_start(link->dhcp_server); |
921 | if (r < 0) { | |
6a7a4e4d | 922 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
923 | |
924 | link_enter_failed(link); | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
6a7a4e4d | 929 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
930 | } |
931 | ||
6a7a4e4d | 932 | if (link->link_messages == 0) |
431ca2ce | 933 | link_enter_set_routes(link); |
6a7a4e4d LP |
934 | else |
935 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 936 | |
f882c247 TG |
937 | return 0; |
938 | } | |
939 | ||
91b5f997 | 940 | int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 941 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
942 | int r; |
943 | ||
944 | assert(m); | |
945 | assert(link); | |
946 | assert(link->ifname); | |
947 | ||
5da8149f | 948 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
949 | return 1; |
950 | ||
1c4baffc | 951 | r = sd_netlink_message_get_errno(m); |
b90b025a | 952 | if (r < 0 && r != -EADDRNOTAVAIL) |
a2fae7bb | 953 | log_link_warning_errno(link, r, "Could not drop address: %m"); |
ff254138 | 954 | |
5bdd314c | 955 | return 1; |
ff254138 TG |
956 | } |
957 | ||
a245ced0 | 958 | static int link_set_bridge_fdb(Link *const link) { |
b98b483b AR |
959 | FdbEntry *fdb_entry; |
960 | int r = 0; | |
961 | ||
962 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
ea6ec096 | 963 | r = fdb_entry_configure(link, fdb_entry); |
b98b483b | 964 | if(r < 0) { |
6a7a4e4d | 965 | log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
b98b483b AR |
966 | break; |
967 | } | |
968 | } | |
969 | ||
970 | return r; | |
971 | } | |
972 | ||
1c4baffc | 973 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
974 | _cleanup_link_unref_ Link *link = userdata; |
975 | int r; | |
976 | ||
6a7a4e4d | 977 | log_link_debug(link, "Set link"); |
e1853b00 | 978 | |
1c4baffc | 979 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 980 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 981 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
982 | link_enter_failed(link); |
983 | return 1; | |
984 | } | |
985 | ||
986 | return 0; | |
987 | } | |
988 | ||
19070062 | 989 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
5da8149f | 990 | _cleanup_link_unref_ Link *link = userdata; |
21b80ad1 | 991 | const sd_bus_error *e; |
1346b1f0 | 992 | |
19070062 | 993 | assert(m); |
b226d99b TG |
994 | assert(link); |
995 | ||
5da8149f | 996 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 997 | return 1; |
370e9930 | 998 | |
21b80ad1 LP |
999 | e = sd_bus_message_get_error(m); |
1000 | if (e) | |
1001 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); | |
1346b1f0 TG |
1002 | |
1003 | return 1; | |
1004 | } | |
1005 | ||
3c9b8860 | 1006 | int link_set_hostname(Link *link, const char *hostname) { |
21b80ad1 | 1007 | int r; |
1346b1f0 | 1008 | |
b226d99b TG |
1009 | assert(link); |
1010 | assert(link->manager); | |
1346b1f0 | 1011 | |
dce391e7 | 1012 | log_link_debug(link, "Setting transient hostname: '%s'", strna(hostname)); |
1346b1f0 | 1013 | |
3c9b8860 TG |
1014 | if (!link->manager->bus) { |
1015 | /* TODO: replace by assert when we can rely on kdbus */ | |
6a7a4e4d | 1016 | log_link_info(link, "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
1017 | return 0; |
1018 | } | |
1019 | ||
9c34154a | 1020 | r = sd_bus_call_method_async( |
b226d99b | 1021 | link->manager->bus, |
9c34154a | 1022 | NULL, |
1346b1f0 TG |
1023 | "org.freedesktop.hostname1", |
1024 | "/org/freedesktop/hostname1", | |
1025 | "org.freedesktop.hostname1", | |
9c34154a UTL |
1026 | "SetHostname", |
1027 | set_hostname_handler, | |
1028 | link, | |
1029 | "sb", | |
1030 | hostname, | |
1031 | false); | |
1346b1f0 | 1032 | |
6a7a4e4d LP |
1033 | if (r < 0) |
1034 | return log_link_error_errno(link, r, "Could not set transient hostname: %m"); | |
b226d99b TG |
1035 | |
1036 | link_ref(link); | |
1346b1f0 | 1037 | |
5da8149f | 1038 | return 0; |
1346b1f0 TG |
1039 | } |
1040 | ||
21b80ad1 LP |
1041 | static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
1042 | _cleanup_link_unref_ Link *link = userdata; | |
1043 | const sd_bus_error *e; | |
1044 | ||
1045 | assert(m); | |
1046 | assert(link); | |
1047 | ||
1048 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1049 | return 1; | |
1050 | ||
1051 | e = sd_bus_message_get_error(m); | |
1052 | if (e) | |
1053 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); | |
1054 | ||
1055 | return 1; | |
1056 | } | |
1057 | ||
64d6c229 | 1058 | int link_set_timezone(Link *link, const char *tz) { |
21b80ad1 LP |
1059 | int r; |
1060 | ||
1061 | assert(link); | |
1062 | assert(link->manager); | |
64d6c229 | 1063 | assert(tz); |
21b80ad1 | 1064 | |
64d6c229 | 1065 | log_link_debug(link, "Setting system timezone: '%s'", tz); |
21b80ad1 LP |
1066 | |
1067 | if (!link->manager->bus) { | |
1068 | log_link_info(link, "Not connected to system bus, ignoring timezone."); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | r = sd_bus_call_method_async( | |
1073 | link->manager->bus, | |
1074 | NULL, | |
1075 | "org.freedesktop.timedate1", | |
1076 | "/org/freedesktop/timedate1", | |
1077 | "org.freedesktop.timedate1", | |
1078 | "SetTimezone", | |
1079 | set_timezone_handler, | |
1080 | link, | |
1081 | "sb", | |
64d6c229 | 1082 | tz, |
21b80ad1 LP |
1083 | false); |
1084 | if (r < 0) | |
1085 | return log_link_error_errno(link, r, "Could not set timezone: %m"); | |
1086 | ||
1087 | link_ref(link); | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
1c4baffc | 1092 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1093 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
1094 | int r; |
1095 | ||
1096 | assert(m); | |
1097 | assert(link); | |
1098 | assert(link->ifname); | |
1099 | ||
5da8149f | 1100 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1101 | return 1; |
1102 | ||
1c4baffc | 1103 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 1104 | if (r < 0) |
a2fae7bb | 1105 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
4f882b2a TG |
1106 | |
1107 | return 1; | |
1108 | } | |
1109 | ||
3c9b8860 | 1110 | int link_set_mtu(Link *link, uint32_t mtu) { |
1c4baffc | 1111 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f882b2a TG |
1112 | int r; |
1113 | ||
1114 | assert(link); | |
1115 | assert(link->manager); | |
1116 | assert(link->manager->rtnl); | |
1117 | ||
6a7a4e4d | 1118 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1119 | |
6a7a4e4d LP |
1120 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1121 | if (r < 0) | |
1122 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1123 | |
1c4baffc | 1124 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1125 | if (r < 0) |
1126 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1127 | |
1c4baffc | 1128 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
1129 | if (r < 0) |
1130 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1131 | |
ae941762 | 1132 | link_ref(link); |
b226d99b | 1133 | |
4f882b2a TG |
1134 | return 0; |
1135 | } | |
1136 | ||
e1853b00 | 1137 | static int link_set_bridge(Link *link) { |
1c4baffc | 1138 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
e1853b00 SS |
1139 | int r; |
1140 | ||
1141 | assert(link); | |
1142 | assert(link->network); | |
1143 | ||
6a7a4e4d LP |
1144 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1145 | if (r < 0) | |
1146 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1147 | |
1148 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1149 | if (r < 0) |
1150 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1151 | |
1c4baffc | 1152 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1153 | if (r < 0) |
1154 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1155 | |
84c34096 | 1156 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, !link->network->use_bpdu); |
eb7ff4dd SS |
1157 | if (r < 0) |
1158 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1159 | ||
1160 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1161 | if (r < 0) | |
1162 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1163 | ||
1164 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1165 | if (r < 0) | |
1166 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1167 | ||
23da66bb | 1168 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, !link->network->allow_port_to_be_root); |
eb7ff4dd SS |
1169 | if (r < 0) |
1170 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
1171 | ||
1172 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1173 | if (r < 0) | |
1174 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
1175 | ||
e1853b00 | 1176 | if(link->network->cost != 0) { |
1c4baffc | 1177 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1178 | if (r < 0) |
1179 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 SS |
1180 | } |
1181 | ||
1c4baffc | 1182 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1183 | if (r < 0) |
1184 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1185 | |
1c4baffc | 1186 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
1187 | if (r < 0) |
1188 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1189 | |
1190 | link_ref(link); | |
1191 | ||
1192 | return r; | |
1193 | } | |
1194 | ||
49699bac SS |
1195 | static void lldp_handler(sd_lldp *lldp, int event, void *userdata) { |
1196 | Link *link = userdata; | |
1197 | int r; | |
1198 | ||
1199 | assert(link); | |
1200 | assert(link->network); | |
1201 | assert(link->manager); | |
1202 | ||
9ef61f2e DH |
1203 | switch (event) { |
1204 | case SD_LLDP_EVENT_UPDATE_INFO: | |
1205 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
1206 | if (r < 0) | |
1207 | log_link_warning_errno(link, r, "Could not save LLDP: %m"); | |
49699bac | 1208 | |
9ef61f2e DH |
1209 | break; |
1210 | default: | |
1211 | break; | |
1212 | } | |
49699bac SS |
1213 | } |
1214 | ||
ff254138 TG |
1215 | static int link_acquire_conf(Link *link) { |
1216 | int r; | |
1217 | ||
1218 | assert(link); | |
1219 | assert(link->network); | |
ff254138 TG |
1220 | assert(link->manager); |
1221 | assert(link->manager->event); | |
1222 | ||
78c958f8 | 1223 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1224 | assert(link->ipv4ll); |
ff254138 | 1225 | |
6a7a4e4d | 1226 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1227 | |
1228 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1229 | if (r < 0) |
1230 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1231 | } |
1232 | ||
78c958f8 | 1233 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1234 | assert(link->dhcp_client); |
ff254138 | 1235 | |
6a7a4e4d | 1236 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1237 | |
5c1d3fc9 | 1238 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1239 | if (r < 0) |
1240 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1241 | } |
ff254138 | 1242 | |
78c958f8 | 1243 | if (link_dhcp6_enabled(link)) { |
de1e9928 | 1244 | assert(link->ndisc_router_discovery); |
4138fb2c | 1245 | |
6a7a4e4d | 1246 | log_link_debug(link, "Discovering IPv6 routers"); |
4138fb2c | 1247 | |
de1e9928 | 1248 | r = sd_ndisc_router_discovery_start(link->ndisc_router_discovery); |
6a7a4e4d | 1249 | if (r < 0) |
ceabaf0f | 1250 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
4138fb2c PF |
1251 | } |
1252 | ||
ce43e484 SS |
1253 | if (link_lldp_enabled(link)) { |
1254 | assert(link->lldp); | |
1255 | ||
1256 | log_link_debug(link, "Starting LLDP"); | |
1257 | ||
1258 | r = sd_lldp_start(link->lldp); | |
6a7a4e4d LP |
1259 | if (r < 0) |
1260 | return log_link_warning_errno(link, r, "Could not start LLDP: %m"); | |
ce43e484 SS |
1261 | } |
1262 | ||
ff254138 TG |
1263 | return 0; |
1264 | } | |
1265 | ||
a61bb41c | 1266 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1267 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1268 | ||
a61bb41c | 1269 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1270 | return true; |
1271 | ||
a61bb41c | 1272 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1273 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1274 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1275 | return true; |
1276 | ||
1277 | return false; | |
1278 | } | |
1279 | ||
1c4baffc | 1280 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1281 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1282 | int r; |
1283 | ||
1746cf2a TG |
1284 | assert(link); |
1285 | ||
5da8149f | 1286 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1287 | return 1; |
1288 | ||
1c4baffc | 1289 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
1290 | if (r < 0) |
1291 | /* we warn but don't fail the link, as it may be | |
1292 | brought up later */ | |
a2fae7bb | 1293 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1294 | |
f882c247 TG |
1295 | return 1; |
1296 | } | |
1297 | ||
1298 | static int link_up(Link *link) { | |
1c4baffc | 1299 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
5c3072ea | 1300 | uint8_t ipv6ll_mode; |
f579559b TG |
1301 | int r; |
1302 | ||
f882c247 | 1303 | assert(link); |
c106cc36 | 1304 | assert(link->network); |
f882c247 TG |
1305 | assert(link->manager); |
1306 | assert(link->manager->rtnl); | |
1307 | ||
6a7a4e4d | 1308 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1309 | |
6a7a4e4d LP |
1310 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1311 | if (r < 0) | |
1312 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1313 | |
5d4795f3 | 1314 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1315 | if (r < 0) |
1316 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1317 | |
c106cc36 | 1318 | if (link->network->mac) { |
1c4baffc | 1319 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1320 | if (r < 0) |
1321 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1322 | } |
1323 | ||
1324 | if (link->network->mtu) { | |
1c4baffc | 1325 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1326 | if (r < 0) |
1327 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1328 | } |
1329 | ||
1c4baffc | 1330 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1331 | if (r < 0) |
1332 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1333 | |
01d28f81 TG |
1334 | if (socket_ipv6_is_supported()) { |
1335 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ | |
1c4baffc | 1336 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1337 | if (r < 0) |
1338 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1339 | |
01d28f81 | 1340 | ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE; |
1c4baffc | 1341 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1342 | if (r < 0) |
1343 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1344 | |
01d28f81 | 1345 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1346 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1347 | if (r < 0) |
1348 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1349 | } | |
1350 | ||
1c4baffc | 1351 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1352 | if (r < 0) |
01d28f81 | 1353 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1354 | } |
d0d6a4cd | 1355 | |
1c4baffc | 1356 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1357 | if (r < 0) |
1358 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1359 | |
1c4baffc | 1360 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1361 | if (r < 0) |
1362 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1363 | |
b226d99b TG |
1364 | link_ref(link); |
1365 | ||
f882c247 TG |
1366 | return 0; |
1367 | } | |
1368 | ||
1c4baffc | 1369 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1370 | _cleanup_link_unref_ Link *link = userdata; |
1371 | int r; | |
1372 | ||
1373 | assert(link); | |
1374 | ||
1375 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1376 | return 1; | |
1377 | ||
1c4baffc | 1378 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1379 | if (r < 0) |
a2fae7bb | 1380 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d AR |
1381 | |
1382 | return 1; | |
1383 | } | |
1384 | ||
1385 | static int link_down(Link *link) { | |
1c4baffc | 1386 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
0d4ad91d AR |
1387 | int r; |
1388 | ||
1389 | assert(link); | |
1390 | assert(link->manager); | |
1391 | assert(link->manager->rtnl); | |
1392 | ||
6a7a4e4d | 1393 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1394 | |
1395 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1396 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1397 | if (r < 0) |
1398 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1399 | |
1400 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1401 | if (r < 0) |
1402 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1403 | |
1c4baffc | 1404 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1405 | if (r < 0) |
1406 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1407 | |
1408 | link_ref(link); | |
1409 | ||
1410 | return 0; | |
1411 | } | |
1412 | ||
1413 | static int link_handle_bound_to_list(Link *link) { | |
1414 | Link *l; | |
1415 | Iterator i; | |
1416 | int r; | |
1417 | bool required_up = false; | |
1418 | bool link_is_up = false; | |
1419 | ||
1420 | assert(link); | |
1421 | ||
1422 | if (hashmap_isempty(link->bound_to_links)) | |
1423 | return 0; | |
1424 | ||
1425 | if (link->flags & IFF_UP) | |
1426 | link_is_up = true; | |
1427 | ||
1428 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1429 | if (link_has_carrier(l)) { | |
1430 | required_up = true; | |
1431 | break; | |
1432 | } | |
1433 | ||
1434 | if (!required_up && link_is_up) { | |
1435 | r = link_down(link); | |
1436 | if (r < 0) | |
1437 | return r; | |
1438 | } else if (required_up && !link_is_up) { | |
1439 | r = link_up(link); | |
1440 | if (r < 0) | |
1441 | return r; | |
1442 | } | |
1443 | ||
1444 | return 0; | |
1445 | } | |
1446 | ||
1447 | static int link_handle_bound_by_list(Link *link) { | |
1448 | Iterator i; | |
1449 | Link *l; | |
1450 | int r; | |
1451 | ||
1452 | assert(link); | |
1453 | ||
1454 | if (hashmap_isempty(link->bound_by_links)) | |
1455 | return 0; | |
1456 | ||
1457 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1458 | r = link_handle_bound_to_list(l); | |
1459 | if (r < 0) | |
1460 | return r; | |
1461 | } | |
1462 | ||
1463 | return 0; | |
1464 | } | |
1465 | ||
1466 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1467 | int r; | |
1468 | ||
1469 | assert(link); | |
1470 | assert(carrier); | |
1471 | ||
1472 | if (link == carrier) | |
1473 | return 0; | |
1474 | ||
1475 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1476 | return 0; | |
1477 | ||
1478 | r = hashmap_ensure_allocated(h, NULL); | |
1479 | if (r < 0) | |
1480 | return r; | |
1481 | ||
1482 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1483 | if (r < 0) | |
1484 | return r; | |
1485 | ||
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | static int link_new_bound_by_list(Link *link) { | |
1490 | Manager *m; | |
1491 | Link *carrier; | |
1492 | Iterator i; | |
1493 | int r; | |
1494 | bool list_updated = false; | |
1495 | ||
1496 | assert(link); | |
1497 | assert(link->manager); | |
1498 | ||
1499 | m = link->manager; | |
1500 | ||
1501 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1502 | if (!carrier->network) | |
1503 | continue; | |
1504 | ||
1505 | if (strv_isempty(carrier->network->bind_carrier)) | |
1506 | continue; | |
1507 | ||
1508 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1509 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1510 | if (r < 0) | |
1511 | return r; | |
1512 | ||
1513 | list_updated = true; | |
1514 | } | |
1515 | } | |
1516 | ||
1517 | if (list_updated) | |
84de38c5 | 1518 | link_dirty(link); |
0d4ad91d AR |
1519 | |
1520 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) { | |
1521 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); | |
1522 | if (r < 0) | |
1523 | return r; | |
1524 | ||
84de38c5 | 1525 | link_dirty(carrier); |
0d4ad91d AR |
1526 | } |
1527 | ||
1528 | return 0; | |
1529 | } | |
1530 | ||
1531 | static int link_new_bound_to_list(Link *link) { | |
1532 | Manager *m; | |
1533 | Link *carrier; | |
1534 | Iterator i; | |
1535 | int r; | |
1536 | bool list_updated = false; | |
1537 | ||
1538 | assert(link); | |
1539 | assert(link->manager); | |
1540 | ||
1541 | if (!link->network) | |
1542 | return 0; | |
1543 | ||
1544 | if (strv_isempty(link->network->bind_carrier)) | |
1545 | return 0; | |
1546 | ||
1547 | m = link->manager; | |
1548 | ||
1549 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1550 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1551 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1552 | if (r < 0) | |
1553 | return r; | |
1554 | ||
1555 | list_updated = true; | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | if (list_updated) | |
84de38c5 | 1560 | link_dirty(link); |
0d4ad91d AR |
1561 | |
1562 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1563 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1564 | if (r < 0) | |
1565 | return r; | |
1566 | ||
84de38c5 | 1567 | link_dirty(carrier); |
0d4ad91d AR |
1568 | } |
1569 | ||
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | static int link_new_carrier_maps(Link *link) { | |
1574 | int r; | |
1575 | ||
1576 | r = link_new_bound_by_list(link); | |
1577 | if (r < 0) | |
1578 | return r; | |
1579 | ||
1580 | r = link_handle_bound_by_list(link); | |
1581 | if (r < 0) | |
1582 | return r; | |
1583 | ||
1584 | r = link_new_bound_to_list(link); | |
1585 | if (r < 0) | |
1586 | return r; | |
1587 | ||
1588 | r = link_handle_bound_to_list(link); | |
1589 | if (r < 0) | |
1590 | return r; | |
1591 | ||
1592 | return 0; | |
1593 | } | |
1594 | ||
1595 | static void link_free_bound_to_list(Link *link) { | |
1596 | Link *bound_to; | |
1597 | Iterator i; | |
1598 | ||
1599 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
1600 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
1601 | ||
1602 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1603 | link_dirty(bound_to); |
0d4ad91d AR |
1604 | } |
1605 | ||
1606 | return; | |
1607 | } | |
1608 | ||
1609 | static void link_free_bound_by_list(Link *link) { | |
1610 | Link *bound_by; | |
1611 | Iterator i; | |
1612 | ||
1613 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
1614 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
1615 | ||
1616 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1617 | link_dirty(bound_by); |
0d4ad91d AR |
1618 | link_handle_bound_to_list(bound_by); |
1619 | } | |
1620 | } | |
1621 | ||
1622 | return; | |
1623 | } | |
1624 | ||
1625 | static void link_free_carrier_maps(Link *link) { | |
1626 | bool list_updated = false; | |
1627 | ||
1628 | assert(link); | |
1629 | ||
1630 | if (!hashmap_isempty(link->bound_to_links)) { | |
1631 | link_free_bound_to_list(link); | |
1632 | list_updated = true; | |
1633 | } | |
1634 | ||
1635 | if (!hashmap_isempty(link->bound_by_links)) { | |
1636 | link_free_bound_by_list(link); | |
1637 | list_updated = true; | |
1638 | } | |
1639 | ||
1640 | if (list_updated) | |
84de38c5 | 1641 | link_dirty(link); |
0d4ad91d AR |
1642 | |
1643 | return; | |
1644 | } | |
1645 | ||
1646 | void link_drop(Link *link) { | |
1647 | if (!link || link->state == LINK_STATE_LINGER) | |
1648 | return; | |
1649 | ||
1650 | link_set_state(link, LINK_STATE_LINGER); | |
1651 | ||
1652 | link_free_carrier_maps(link); | |
1653 | ||
6a7a4e4d | 1654 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1655 | |
84de38c5 | 1656 | (void)unlink(link->state_file); |
0d4ad91d AR |
1657 | link_unref(link); |
1658 | ||
1659 | return; | |
1660 | } | |
1661 | ||
3f265037 | 1662 | static int link_joined(Link *link) { |
f882c247 TG |
1663 | int r; |
1664 | ||
ef1ba606 | 1665 | assert(link); |
f5be5601 | 1666 | assert(link->network); |
dd3efc09 | 1667 | |
0d4ad91d AR |
1668 | if (!hashmap_isempty(link->bound_to_links)) { |
1669 | r = link_handle_bound_to_list(link); | |
1670 | if (r < 0) | |
1671 | return r; | |
1672 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1673 | r = link_up(link); |
1674 | if (r < 0) { | |
1675 | link_enter_failed(link); | |
1676 | return r; | |
1677 | } | |
ef1ba606 | 1678 | } |
f882c247 | 1679 | |
e1853b00 SS |
1680 | if(link->network->bridge) { |
1681 | r = link_set_bridge(link); | |
6a7a4e4d LP |
1682 | if (r < 0) |
1683 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
1684 | } |
1685 | ||
fb6730c4 | 1686 | return link_enter_set_addresses(link); |
02b59d57 TG |
1687 | } |
1688 | ||
62e2d5bb | 1689 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1690 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1691 | int r; |
1692 | ||
1746cf2a | 1693 | assert(link); |
ef1ba606 | 1694 | assert(link->network); |
02b59d57 | 1695 | |
52433f6b TG |
1696 | link->enslaving --; |
1697 | ||
5da8149f | 1698 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1699 | return 1; |
1700 | ||
1c4baffc | 1701 | r = sd_netlink_message_get_errno(m); |
856f962c | 1702 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 1703 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
1704 | link_enter_failed(link); |
1705 | return 1; | |
ba179154 | 1706 | } else |
6a7a4e4d | 1707 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 1708 | |
856f962c | 1709 | if (link->enslaving <= 0) |
3f265037 | 1710 | link_joined(link); |
02b59d57 TG |
1711 | |
1712 | return 1; | |
1713 | } | |
1714 | ||
3f265037 | 1715 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1716 | NetDev *netdev; |
672682a6 | 1717 | Iterator i; |
02b59d57 TG |
1718 | int r; |
1719 | ||
1720 | assert(link); | |
1721 | assert(link->network); | |
8434fd5c | 1722 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1723 | |
e331e246 | 1724 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 1725 | |
84de38c5 | 1726 | link_dirty(link); |
fe8db0c5 | 1727 | |
7951dea2 SS |
1728 | if (!link->network->bridge && |
1729 | !link->network->bond && | |
6a0a2f86 | 1730 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1731 | return link_joined(link); |
02b59d57 | 1732 | |
d9c67ea1 | 1733 | if (link->network->bond) { |
f2341e0a LP |
1734 | log_struct(LOG_DEBUG, |
1735 | LOG_LINK_INTERFACE(link), | |
1736 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1737 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
1738 | NULL); | |
1739 | ||
1740 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 1741 | if (r < 0) { |
f2341e0a LP |
1742 | log_struct_errno(LOG_WARNING, r, |
1743 | LOG_LINK_INTERFACE(link), | |
1744 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1745 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
1746 | NULL); | |
1747 | ||
52433f6b TG |
1748 | link_enter_failed(link); |
1749 | return r; | |
1750 | } | |
1751 | ||
0ad6148e MO |
1752 | link->enslaving ++; |
1753 | } | |
1754 | ||
d9c67ea1 | 1755 | if (link->network->bridge) { |
f2341e0a LP |
1756 | log_struct(LOG_DEBUG, |
1757 | LOG_LINK_INTERFACE(link), | |
1758 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1759 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
1760 | NULL); | |
1761 | ||
1762 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 1763 | if (r < 0) { |
f2341e0a LP |
1764 | log_struct_errno(LOG_WARNING, r, |
1765 | LOG_LINK_INTERFACE(link), | |
1766 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1767 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
1768 | NULL), | |
0ad6148e MO |
1769 | link_enter_failed(link); |
1770 | return r; | |
1771 | } | |
1772 | ||
52433f6b TG |
1773 | link->enslaving ++; |
1774 | } | |
1775 | ||
6a0a2f86 | 1776 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 1777 | |
f2341e0a LP |
1778 | log_struct(LOG_DEBUG, |
1779 | LOG_LINK_INTERFACE(link), | |
1780 | LOG_NETDEV_INTERFACE(netdev), | |
1781 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
1782 | NULL); | |
1783 | ||
1784 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 1785 | if (r < 0) { |
f2341e0a LP |
1786 | log_struct_errno(LOG_WARNING, r, |
1787 | LOG_LINK_INTERFACE(link), | |
1788 | LOG_NETDEV_INTERFACE(netdev), | |
1789 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
1790 | NULL); | |
326cb406 SS |
1791 | link_enter_failed(link); |
1792 | return r; | |
1793 | } | |
1794 | ||
326cb406 SS |
1795 | link->enslaving ++; |
1796 | } | |
1797 | ||
ef1ba606 TG |
1798 | return 0; |
1799 | } | |
1800 | ||
769d324c | 1801 | static int link_set_ipv4_forward(Link *link) { |
15dee3f0 | 1802 | const char *p = NULL, *v; |
5a8bcb67 LP |
1803 | int r; |
1804 | ||
15dee3f0 LP |
1805 | if (link->flags & IFF_LOOPBACK) |
1806 | return 0; | |
1807 | ||
8add5f79 NO |
1808 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1809 | return 0; | |
1810 | ||
63c372cb | 1811 | p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1812 | v = one_zero(link_ipv4_forward_enabled(link)); |
1813 | ||
4c1fc3e4 | 1814 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1815 | if (r < 0) { |
1816 | /* If the right value is set anyway, don't complain */ | |
1817 | if (verify_one_line_file(p, v) > 0) | |
1818 | return 0; | |
1819 | ||
43c6d5ab | 1820 | log_link_warning_errno(link, r, "Cannot configure IPv4 forwarding for interface %s: %m", link->ifname); |
15dee3f0 | 1821 | } |
43c6d5ab | 1822 | |
769d324c LP |
1823 | return 0; |
1824 | } | |
1825 | ||
1826 | static int link_set_ipv6_forward(Link *link) { | |
15dee3f0 | 1827 | const char *p = NULL, *v = NULL; |
769d324c LP |
1828 | int r; |
1829 | ||
fe027299 LP |
1830 | /* Make this a NOP if IPv6 is not available */ |
1831 | if (!socket_ipv6_is_supported()) | |
1832 | return 0; | |
1833 | ||
15dee3f0 LP |
1834 | if (link->flags & IFF_LOOPBACK) |
1835 | return 0; | |
1836 | ||
8add5f79 NO |
1837 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1838 | return 0; | |
1839 | ||
63c372cb | 1840 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1841 | v = one_zero(link_ipv6_forward_enabled(link)); |
1842 | ||
4c1fc3e4 | 1843 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1844 | if (r < 0) { |
1845 | /* If the right value is set anyway, don't complain */ | |
1846 | if (verify_one_line_file(p, v) > 0) | |
1847 | return 0; | |
1848 | ||
769d324c | 1849 | log_link_warning_errno(link, r, "Cannot configure IPv6 forwarding for interface: %m"); |
15dee3f0 | 1850 | } |
5a8bcb67 LP |
1851 | |
1852 | return 0; | |
1853 | } | |
1854 | ||
49092e22 | 1855 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 LP |
1856 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; |
1857 | IPv6PrivacyExtensions s; | |
49092e22 SS |
1858 | const char *p = NULL; |
1859 | int r; | |
1860 | ||
1861 | /* Make this a NOP if IPv6 is not available */ | |
1862 | if (!socket_ipv6_is_supported()) | |
1863 | return 0; | |
1864 | ||
1f0d9695 LP |
1865 | s = link_ipv6_privacy_extensions(link); |
1866 | if (s == _IPV6_PRIVACY_EXTENSIONS_INVALID) | |
49092e22 SS |
1867 | return 0; |
1868 | ||
1869 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
1870 | xsprintf(buf, "%u", link->network->ipv6_privacy_extensions); | |
1871 | ||
4c1fc3e4 | 1872 | r = write_string_file(p, buf, 0); |
1f0d9695 LP |
1873 | if (r < 0) { |
1874 | /* If the right value is set anyway, don't complain */ | |
1875 | if (verify_one_line_file(p, buf) > 0) | |
1876 | return 0; | |
1877 | ||
49092e22 | 1878 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
1f0d9695 | 1879 | } |
49092e22 SS |
1880 | |
1881 | return 0; | |
1882 | } | |
1883 | ||
4f2e437a SS |
1884 | static int link_set_ipv6_accept_ra(Link *link) { |
1885 | const char *p = NULL, *v = NULL; | |
4f2e437a SS |
1886 | int r; |
1887 | ||
1888 | /* Make this a NOP if IPv6 is not available */ | |
1889 | if (!socket_ipv6_is_supported()) | |
1890 | return 0; | |
1891 | ||
1892 | if (link->flags & IFF_LOOPBACK) | |
1893 | return 0; | |
1894 | ||
6a512301 GM |
1895 | /* If unset use system default (enabled if local forwarding is disabled. |
1896 | * disabled if local forwarding is enabled). | |
1897 | * If set, ignore or enforce RA independent of local forwarding state. | |
4f2e437a | 1898 | */ |
ebf98081 | 1899 | if (link->network->ipv6_accept_ra < 0) |
6a512301 GM |
1900 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ |
1901 | v = "1"; | |
ebf98081 | 1902 | else if (link->network->ipv6_accept_ra > 0) |
6a512301 GM |
1903 | /* "2" means accept RA even if ip_forward is enabled */ |
1904 | v = "2"; | |
ebf98081 | 1905 | else |
6a512301 GM |
1906 | /* "0" means ignore RA */ |
1907 | v = "0"; | |
ebf98081 | 1908 | |
4f2e437a | 1909 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); |
4f2e437a SS |
1910 | |
1911 | r = write_string_file(p, v, 0); | |
1912 | if (r < 0) { | |
1913 | /* If the right value is set anyway, don't complain */ | |
1914 | if (verify_one_line_file(p, v) > 0) | |
1915 | return 0; | |
1916 | ||
1917 | log_link_warning_errno(link, r, "Cannot configure IPv6 accept_ra for interface: %m"); | |
1918 | } | |
1919 | ||
1920 | return 0; | |
1921 | } | |
1922 | ||
8749cbcd SS |
1923 | static int link_set_ipv6_dad_transmits(Link *link) { |
1924 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; | |
1925 | const char *p = NULL; | |
1926 | int r; | |
1927 | ||
1928 | /* Make this a NOP if IPv6 is not available */ | |
1929 | if (!socket_ipv6_is_supported()) | |
1930 | return 0; | |
1931 | ||
1932 | if (link->flags & IFF_LOOPBACK) | |
1933 | return 0; | |
1934 | ||
1935 | if (link->network->ipv6_dad_transmits < 0) | |
1936 | return 0; | |
1937 | ||
1938 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); | |
1939 | ||
1940 | xsprintf(buf, "%u", link->network->ipv6_dad_transmits); | |
1941 | ||
1942 | r = write_string_file(p, buf, 0); | |
1943 | if (r < 0) { | |
1944 | /* If the right value is set anyway, don't complain */ | |
1945 | if (verify_one_line_file(p, buf) > 0) | |
1946 | return 0; | |
1947 | ||
1948 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); | |
1949 | } | |
1950 | ||
1951 | return 0; | |
1952 | } | |
1953 | ||
a748b692 | 1954 | static int link_configure(Link *link) { |
02b59d57 TG |
1955 | int r; |
1956 | ||
ef1ba606 | 1957 | assert(link); |
b22d8a00 | 1958 | assert(link->network); |
8434fd5c | 1959 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 1960 | |
b98b483b AR |
1961 | r = link_set_bridge_fdb(link); |
1962 | if (r < 0) | |
1963 | return r; | |
1964 | ||
769d324c LP |
1965 | r = link_set_ipv4_forward(link); |
1966 | if (r < 0) | |
1967 | return r; | |
1968 | ||
1969 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
1970 | if (r < 0) |
1971 | return r; | |
1972 | ||
49092e22 SS |
1973 | r = link_set_ipv6_privacy_extensions(link); |
1974 | if (r < 0) | |
1975 | return r; | |
1976 | ||
4f2e437a SS |
1977 | r = link_set_ipv6_accept_ra(link); |
1978 | if (r < 0) | |
1979 | return r; | |
1980 | ||
8749cbcd SS |
1981 | r = link_set_ipv6_dad_transmits(link); |
1982 | if (r < 0) | |
1983 | return r; | |
1984 | ||
78c958f8 | 1985 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 1986 | r = ipv4ll_configure(link); |
eb34d4af TG |
1987 | if (r < 0) |
1988 | return r; | |
1989 | } | |
1990 | ||
78c958f8 | 1991 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 1992 | r = dhcp4_configure(link); |
eb34d4af TG |
1993 | if (r < 0) |
1994 | return r; | |
eb34d4af TG |
1995 | } |
1996 | ||
78c958f8 | 1997 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
1998 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
1999 | if (r < 0) | |
2000 | return r; | |
2001 | ||
2002 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
2003 | if (r < 0) | |
2004 | return r; | |
dd43110f TG |
2005 | } |
2006 | ||
78c958f8 | 2007 | if (link_dhcp6_enabled(link)) { |
de1e9928 | 2008 | r = ndisc_configure(link); |
4138fb2c PF |
2009 | if (r < 0) |
2010 | return r; | |
2011 | } | |
2012 | ||
ce43e484 SS |
2013 | if (link_lldp_enabled(link)) { |
2014 | r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp); | |
2015 | if (r < 0) | |
2016 | return r; | |
2017 | ||
2018 | r = sd_lldp_attach_event(link->lldp, NULL, 0); | |
2019 | if (r < 0) | |
2020 | return r; | |
49699bac SS |
2021 | |
2022 | r = sd_lldp_set_callback(link->lldp, | |
2023 | lldp_handler, link); | |
2024 | if (r < 0) | |
2025 | return r; | |
ce43e484 SS |
2026 | } |
2027 | ||
a61bb41c | 2028 | if (link_has_carrier(link)) { |
1e9be60b TG |
2029 | r = link_acquire_conf(link); |
2030 | if (r < 0) | |
2031 | return r; | |
cc544d5f | 2032 | } |
1e9be60b | 2033 | |
3f265037 | 2034 | return link_enter_join_netdev(link); |
505f8da7 TG |
2035 | } |
2036 | ||
1c4baffc | 2037 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 2038 | void *userdata) { |
5da8149f | 2039 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 2040 | Network *network; |
505f8da7 TG |
2041 | int r; |
2042 | ||
2043 | assert(link); | |
2044 | assert(link->ifname); | |
2045 | assert(link->manager); | |
2046 | ||
8434fd5c | 2047 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 2048 | return 1; |
505f8da7 | 2049 | |
6a7a4e4d | 2050 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 2051 | |
0d4ad91d AR |
2052 | r = link_new_bound_by_list(link); |
2053 | if (r < 0) | |
2054 | return r; | |
2055 | ||
2056 | r = link_handle_bound_by_list(link); | |
2057 | if (r < 0) | |
2058 | return r; | |
2059 | ||
3c9b8860 TG |
2060 | r = network_get(link->manager, link->udev_device, link->ifname, |
2061 | &link->mac, &network); | |
57bd6899 TG |
2062 | if (r == -ENOENT) { |
2063 | link_enter_unmanaged(link); | |
5da8149f | 2064 | return 1; |
57bd6899 TG |
2065 | } else if (r < 0) |
2066 | return r; | |
505f8da7 | 2067 | |
bd2efe92 | 2068 | if (link->flags & IFF_LOOPBACK) { |
d0d6a4cd | 2069 | if (network->link_local != ADDRESS_FAMILY_NO) |
6a7a4e4d | 2070 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); |
78c958f8 | 2071 | |
cb9fc36a | 2072 | if (network->dhcp != ADDRESS_FAMILY_NO) |
6a7a4e4d | 2073 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); |
78c958f8 TG |
2074 | |
2075 | if (network->dhcp_server) | |
6a7a4e4d | 2076 | log_link_debug(link, "Ignoring DHCP server for loopback link"); |
bd2efe92 TG |
2077 | } |
2078 | ||
505f8da7 TG |
2079 | r = network_apply(link->manager, network, link); |
2080 | if (r < 0) | |
2081 | return r; | |
2082 | ||
0d4ad91d AR |
2083 | r = link_new_bound_to_list(link); |
2084 | if (r < 0) | |
2085 | return r; | |
2086 | ||
a748b692 TG |
2087 | r = link_configure(link); |
2088 | if (r < 0) | |
2089 | return r; | |
2090 | ||
5da8149f | 2091 | return 1; |
505f8da7 TG |
2092 | } |
2093 | ||
4f561e8e | 2094 | int link_initialized(Link *link, struct udev_device *device) { |
1c4baffc | 2095 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f561e8e TG |
2096 | int r; |
2097 | ||
2098 | assert(link); | |
2099 | assert(link->manager); | |
2100 | assert(link->manager->rtnl); | |
2101 | assert(device); | |
2102 | ||
8434fd5c | 2103 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2104 | return 0; |
2105 | ||
679b3605 TG |
2106 | if (link->udev_device) |
2107 | return 0; | |
2108 | ||
79008bdd | 2109 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
2110 | |
2111 | link->udev_device = udev_device_ref(device); | |
2112 | ||
3c9b8860 TG |
2113 | /* udev has initialized the link, but we don't know if we have yet |
2114 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2115 | * when it returns we know that the pending NEWLINKs have already been | |
2116 | * processed and that we are up-to-date */ | |
4f561e8e | 2117 | |
3c9b8860 TG |
2118 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2119 | link->ifindex); | |
4f561e8e TG |
2120 | if (r < 0) |
2121 | return r; | |
2122 | ||
1c4baffc | 2123 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 2124 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
2125 | if (r < 0) |
2126 | return r; | |
2127 | ||
5da8149f TG |
2128 | link_ref(link); |
2129 | ||
4f561e8e TG |
2130 | return 0; |
2131 | } | |
2132 | ||
1c4baffc | 2133 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
2134 | Link *link; |
2135 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
2136 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
2137 | int r; | |
2138 | ||
2139 | assert(m); | |
fbbeb65a | 2140 | assert(m->rtnl); |
505f8da7 TG |
2141 | assert(message); |
2142 | assert(ret); | |
2143 | ||
2144 | r = link_new(m, message, ret); | |
2145 | if (r < 0) | |
2146 | return r; | |
2147 | ||
2148 | link = *ret; | |
2149 | ||
6a7a4e4d | 2150 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2151 | |
75f86906 | 2152 | if (detect_container() <= 0) { |
505f8da7 | 2153 | /* not in a container, udev will be around */ |
ae06ab10 | 2154 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 2155 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
5c416fc4 TG |
2156 | if (!device) { |
2157 | r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
2158 | goto failed; | |
2159 | } | |
505f8da7 | 2160 | |
3c4cb064 | 2161 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 2162 | /* not yet ready */ |
79008bdd | 2163 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2164 | return 0; |
3c4cb064 | 2165 | } |
505f8da7 | 2166 | |
4f561e8e TG |
2167 | r = link_initialized(link, device); |
2168 | if (r < 0) | |
5c416fc4 | 2169 | goto failed; |
4f561e8e | 2170 | } else { |
5da8149f TG |
2171 | /* we are calling a callback directly, so must take a ref */ |
2172 | link_ref(link); | |
2173 | ||
4f561e8e TG |
2174 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
2175 | if (r < 0) | |
5c416fc4 | 2176 | goto failed; |
4f561e8e | 2177 | } |
505f8da7 | 2178 | |
a748b692 | 2179 | return 0; |
5c416fc4 TG |
2180 | failed: |
2181 | link_enter_failed(link); | |
2182 | return r; | |
a748b692 TG |
2183 | } |
2184 | ||
9c0a72f9 TG |
2185 | static int link_carrier_gained(Link *link) { |
2186 | int r; | |
2187 | ||
2188 | assert(link); | |
2189 | ||
2190 | if (link->network) { | |
2191 | r = link_acquire_conf(link); | |
2192 | if (r < 0) { | |
2193 | link_enter_failed(link); | |
2194 | return r; | |
2195 | } | |
2196 | } | |
2197 | ||
0d4ad91d AR |
2198 | r = link_handle_bound_by_list(link); |
2199 | if (r < 0) | |
2200 | return r; | |
2201 | ||
9c0a72f9 TG |
2202 | return 0; |
2203 | } | |
2204 | ||
2205 | static int link_carrier_lost(Link *link) { | |
2206 | int r; | |
2207 | ||
2208 | assert(link); | |
2209 | ||
2210 | r = link_stop_clients(link); | |
2211 | if (r < 0) { | |
2212 | link_enter_failed(link); | |
2213 | return r; | |
2214 | } | |
2215 | ||
0d4ad91d AR |
2216 | r = link_handle_bound_by_list(link); |
2217 | if (r < 0) | |
2218 | return r; | |
2219 | ||
9c0a72f9 TG |
2220 | return 0; |
2221 | } | |
2222 | ||
2223 | int link_carrier_reset(Link *link) { | |
2224 | int r; | |
2225 | ||
2226 | assert(link); | |
2227 | ||
2228 | if (link_has_carrier(link)) { | |
2229 | r = link_carrier_lost(link); | |
2230 | if (r < 0) | |
2231 | return r; | |
2232 | ||
2233 | r = link_carrier_gained(link); | |
2234 | if (r < 0) | |
2235 | return r; | |
2236 | ||
6a7a4e4d | 2237 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2238 | } |
2239 | ||
2240 | return 0; | |
2241 | } | |
2242 | ||
2243 | ||
1c4baffc | 2244 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 2245 | struct ether_addr mac; |
ca4e095a | 2246 | const char *ifname; |
afe7fd56 | 2247 | uint32_t mtu; |
a61bb41c | 2248 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
2249 | int r; |
2250 | ||
dd3efc09 | 2251 | assert(link); |
b8941f74 | 2252 | assert(link->ifname); |
22936833 TG |
2253 | assert(m); |
2254 | ||
7619683b TG |
2255 | if (link->state == LINK_STATE_LINGER) { |
2256 | link_ref(link); | |
6a7a4e4d | 2257 | log_link_info(link, "Link readded"); |
e331e246 | 2258 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
2259 | |
2260 | r = link_new_carrier_maps(link); | |
2261 | if (r < 0) | |
2262 | return r; | |
7619683b TG |
2263 | } |
2264 | ||
1c4baffc | 2265 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2266 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 2267 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 2268 | |
0d4ad91d AR |
2269 | link_free_carrier_maps(link); |
2270 | ||
2fc09a9c DM |
2271 | r = free_and_strdup(&link->ifname, ifname); |
2272 | if (r < 0) | |
2273 | return r; | |
0d4ad91d AR |
2274 | |
2275 | r = link_new_carrier_maps(link); | |
2276 | if (r < 0) | |
2277 | return r; | |
b8941f74 TG |
2278 | } |
2279 | ||
1c4baffc | 2280 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2281 | if (r >= 0 && mtu > 0) { |
2282 | link->mtu = mtu; | |
2283 | if (!link->original_mtu) { | |
2284 | link->original_mtu = mtu; | |
6a7a4e4d | 2285 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2286 | } |
2287 | ||
2288 | if (link->dhcp_client) { | |
3c9b8860 TG |
2289 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2290 | link->mtu); | |
afe7fd56 | 2291 | if (r < 0) { |
6a7a4e4d | 2292 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
2293 | return r; |
2294 | } | |
2295 | } | |
9842de0d | 2296 | } |
69629de9 | 2297 | |
e9189a1f TG |
2298 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2299 | set, simply ignore them. */ | |
1c4baffc | 2300 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2301 | if (r >= 0) { |
3c9b8860 TG |
2302 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2303 | ETH_ALEN)) { | |
c49b33ac | 2304 | |
3c9b8860 TG |
2305 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2306 | ETH_ALEN); | |
c49b33ac | 2307 | |
79008bdd | 2308 | log_link_debug(link, "MAC address: " |
20861203 TG |
2309 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
2310 | mac.ether_addr_octet[0], | |
2311 | mac.ether_addr_octet[1], | |
2312 | mac.ether_addr_octet[2], | |
2313 | mac.ether_addr_octet[3], | |
2314 | mac.ether_addr_octet[4], | |
2315 | mac.ether_addr_octet[5]); | |
c49b33ac | 2316 | |
20861203 TG |
2317 | if (link->ipv4ll) { |
2318 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
2319 | if (r < 0) |
2320 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 2321 | } |
c49b33ac | 2322 | |
20861203 | 2323 | if (link->dhcp_client) { |
3c9b8860 | 2324 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
2325 | (const uint8_t *) &link->mac, |
2326 | sizeof (link->mac), | |
2327 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2328 | if (r < 0) |
2329 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
c49b33ac | 2330 | } |
4138fb2c PF |
2331 | |
2332 | if (link->dhcp6_client) { | |
2333 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
2334 | (const uint8_t *) &link->mac, |
2335 | sizeof (link->mac), | |
2336 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2337 | if (r < 0) |
2338 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
4138fb2c | 2339 | } |
c49b33ac | 2340 | } |
4f882b2a TG |
2341 | } |
2342 | ||
a61bb41c TG |
2343 | had_carrier = link_has_carrier(link); |
2344 | ||
2345 | r = link_update_flags(link, m); | |
2346 | if (r < 0) | |
2347 | return r; | |
2348 | ||
2349 | carrier_gained = !had_carrier && link_has_carrier(link); | |
2350 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2351 | ||
2352 | if (carrier_gained) { | |
6a7a4e4d | 2353 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2354 | |
9c0a72f9 TG |
2355 | r = link_carrier_gained(link); |
2356 | if (r < 0) | |
2357 | return r; | |
a61bb41c | 2358 | } else if (carrier_lost) { |
6a7a4e4d | 2359 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2360 | |
9c0a72f9 TG |
2361 | r = link_carrier_lost(link); |
2362 | if (r < 0) | |
a61bb41c | 2363 | return r; |
9c0a72f9 | 2364 | |
a61bb41c TG |
2365 | } |
2366 | ||
2367 | return 0; | |
dd3efc09 | 2368 | } |
fe8db0c5 TG |
2369 | |
2370 | int link_save(Link *link) { | |
68a8723c | 2371 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2372 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2373 | const char *admin_state, *oper_state; |
e7780c8d TG |
2374 | Address *a; |
2375 | Iterator i; | |
fe8db0c5 TG |
2376 | int r; |
2377 | ||
2378 | assert(link); | |
2379 | assert(link->state_file); | |
68a8723c | 2380 | assert(link->lease_file); |
bbf7c048 TG |
2381 | assert(link->manager); |
2382 | ||
370e9930 TG |
2383 | if (link->state == LINK_STATE_LINGER) { |
2384 | unlink(link->state_file); | |
2385 | return 0; | |
2386 | } | |
2387 | ||
deb2e523 TG |
2388 | admin_state = link_state_to_string(link->state); |
2389 | assert(admin_state); | |
2390 | ||
e375dcde TG |
2391 | oper_state = link_operstate_to_string(link->operstate); |
2392 | assert(oper_state); | |
deb2e523 | 2393 | |
fe8db0c5 TG |
2394 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2395 | if (r < 0) | |
6a7a4e4d | 2396 | goto fail; |
fe8db0c5 TG |
2397 | |
2398 | fchmod(fileno(f), 0644); | |
2399 | ||
2400 | fprintf(f, | |
2401 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2402 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
2403 | "OPER_STATE=%s\n", |
2404 | admin_state, oper_state); | |
fe8db0c5 | 2405 | |
bcb7a07e | 2406 | if (link->network) { |
ea352b40 LP |
2407 | char **address, **domain; |
2408 | bool space; | |
07bdc70d PF |
2409 | sd_dhcp6_lease *dhcp6_lease = NULL; |
2410 | ||
2411 | if (link->dhcp6_client) { | |
2412 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, | |
2413 | &dhcp6_lease); | |
2414 | if (r < 0) | |
2415 | log_link_debug(link, "No DHCPv6 lease"); | |
2416 | } | |
b0e39c82 | 2417 | |
adc5b2e2 TG |
2418 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2419 | ||
b0e39c82 | 2420 | fputs("DNS=", f); |
ea352b40 LP |
2421 | space = false; |
2422 | STRV_FOREACH(address, link->network->dns) { | |
2423 | if (space) | |
2424 | fputc(' ', f); | |
2425 | fputs(*address, f); | |
2426 | space = true; | |
2427 | } | |
d5314fff | 2428 | |
b0e39c82 TG |
2429 | if (link->network->dhcp_dns && |
2430 | link->dhcp_lease) { | |
2431 | const struct in_addr *addresses; | |
2432 | ||
2433 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
2434 | if (r > 0) { | |
ea352b40 LP |
2435 | if (space) |
2436 | fputc(' ', f); | |
b0e39c82 | 2437 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2438 | space = true; |
2439 | } | |
2440 | } | |
2441 | ||
2442 | if (link->network->dhcp_dns && dhcp6_lease) { | |
2443 | struct in6_addr *in6_addrs; | |
2444 | ||
2445 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
2446 | if (r > 0) { | |
2447 | if (space) | |
2448 | fputc(' ', f); | |
2449 | serialize_in6_addrs(f, in6_addrs, r); | |
b0e39c82 TG |
2450 | } |
2451 | } | |
2452 | ||
b0e39c82 TG |
2453 | fputs("\n", f); |
2454 | ||
2455 | fprintf(f, "NTP="); | |
ea352b40 LP |
2456 | space = false; |
2457 | STRV_FOREACH(address, link->network->ntp) { | |
2458 | if (space) | |
2459 | fputc(' ', f); | |
2460 | fputs(*address, f); | |
2461 | space = true; | |
2462 | } | |
d5314fff | 2463 | |
b0e39c82 TG |
2464 | if (link->network->dhcp_ntp && |
2465 | link->dhcp_lease) { | |
2466 | const struct in_addr *addresses; | |
2467 | ||
2468 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
2469 | if (r > 0) { | |
ea352b40 LP |
2470 | if (space) |
2471 | fputc(' ', f); | |
b0e39c82 | 2472 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2473 | space = true; |
2474 | } | |
2475 | } | |
2476 | ||
2477 | if (link->network->dhcp_ntp && dhcp6_lease) { | |
2478 | struct in6_addr *in6_addrs; | |
2479 | char **hosts; | |
2480 | char **hostname; | |
2481 | ||
2482 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
2483 | &in6_addrs); | |
2484 | if (r > 0) { | |
2485 | if (space) | |
2486 | fputc(' ', f); | |
2487 | serialize_in6_addrs(f, in6_addrs, r); | |
2488 | space = true; | |
2489 | } | |
2490 | ||
2491 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
2492 | if (r > 0) { | |
2493 | STRV_FOREACH(hostname, hosts) { | |
2494 | if (space) | |
2495 | fputc(' ', f); | |
2496 | fputs(*hostname, f); | |
2497 | space = true; | |
2498 | } | |
b0e39c82 TG |
2499 | } |
2500 | } | |
2501 | ||
b0e39c82 | 2502 | fputs("\n", f); |
bd8f6538 | 2503 | |
6192b846 | 2504 | fprintf(f, "DOMAINS="); |
ea352b40 LP |
2505 | space = false; |
2506 | STRV_FOREACH(domain, link->network->domains) { | |
2507 | if (space) | |
2508 | fputc(' ', f); | |
2509 | fputs(*domain, f); | |
2510 | space = true; | |
2511 | } | |
d5314fff | 2512 | |
ad0734e8 | 2513 | if (link->network->dhcp_domains && |
9b4d1882 TG |
2514 | link->dhcp_lease) { |
2515 | const char *domainname; | |
2516 | ||
2517 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
6192b846 | 2518 | if (r >= 0) { |
ea352b40 LP |
2519 | if (space) |
2520 | fputc(' ', f); | |
6192b846 | 2521 | fputs(domainname, f); |
07bdc70d PF |
2522 | space = true; |
2523 | } | |
2524 | } | |
2525 | ||
2526 | if (link->network->dhcp_domains && dhcp6_lease) { | |
2527 | char **domains; | |
2528 | ||
2529 | r = sd_dhcp6_lease_get_domains(dhcp6_lease, &domains); | |
2530 | if (r >= 0) { | |
2531 | STRV_FOREACH(domain, domains) { | |
2532 | if (space) | |
2533 | fputc(' ', f); | |
2534 | fputs(*domain, f); | |
2535 | space = true; | |
2536 | } | |
6192b846 | 2537 | } |
9b4d1882 TG |
2538 | } |
2539 | ||
6192b846 TG |
2540 | fputs("\n", f); |
2541 | ||
67272d15 TG |
2542 | fprintf(f, "WILDCARD_DOMAIN=%s\n", |
2543 | yes_no(link->network->wildcard_domain)); | |
2544 | ||
3c9b8860 | 2545 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 2546 | resolve_support_to_string(link->network->llmnr)); |
e7780c8d TG |
2547 | |
2548 | fprintf(f, "ADDRESSES="); | |
2549 | space = false; | |
2550 | SET_FOREACH(a, link->addresses, i) { | |
2551 | _cleanup_free_ char *address_str = NULL; | |
2552 | ||
2553 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
2554 | if (r < 0) | |
2555 | goto fail; | |
2556 | ||
e7780c8d TG |
2557 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
2558 | space = true; | |
2559 | } | |
2560 | ||
2561 | fputs("\n", f); | |
bcb7a07e | 2562 | } |
7374f9d8 | 2563 | |
0d4ad91d AR |
2564 | if (!hashmap_isempty(link->bound_to_links)) { |
2565 | Link *carrier; | |
0d4ad91d AR |
2566 | bool space = false; |
2567 | ||
2568 | fputs("CARRIER_BOUND_TO=", f); | |
2569 | HASHMAP_FOREACH(carrier, link->bound_to_links, i) { | |
2570 | if (space) | |
2571 | fputc(' ', f); | |
2572 | fputs(carrier->ifname, f); | |
2573 | space = true; | |
2574 | } | |
2575 | ||
2576 | fputs("\n", f); | |
2577 | } | |
2578 | ||
2579 | if (!hashmap_isempty(link->bound_by_links)) { | |
2580 | Link *carrier; | |
0d4ad91d AR |
2581 | bool space = false; |
2582 | ||
2583 | fputs("CARRIER_BOUND_BY=", f); | |
0d4ad91d AR |
2584 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
2585 | if (space) | |
2586 | fputc(' ', f); | |
2587 | fputs(carrier->ifname, f); | |
2588 | space = true; | |
2589 | } | |
2590 | ||
2591 | fputs("\n", f); | |
2592 | } | |
2593 | ||
8eb9058d LP |
2594 | if (link->dhcp_lease) { |
2595 | const char *tz = NULL; | |
2596 | ||
2597 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); | |
2598 | if (r >= 0) | |
2599 | fprintf(f, "TIMEZONE=%s\n", tz); | |
2600 | } | |
2601 | ||
fe8db0c5 | 2602 | if (link->dhcp_lease) { |
d9876a52 TG |
2603 | assert(link->network); |
2604 | ||
bd91b83e | 2605 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 2606 | if (r < 0) |
c2d6bd61 | 2607 | goto fail; |
fe8db0c5 | 2608 | |
7374f9d8 | 2609 | fprintf(f, |
b0e39c82 TG |
2610 | "DHCP_LEASE=%s\n", |
2611 | link->lease_file); | |
deb2e523 | 2612 | } else |
68a8723c | 2613 | unlink(link->lease_file); |
fe8db0c5 | 2614 | |
49699bac SS |
2615 | if (link->lldp) { |
2616 | assert(link->network); | |
2617 | ||
2618 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
2619 | if (r < 0) | |
2620 | goto fail; | |
2621 | ||
2622 | fprintf(f, | |
2623 | "LLDP_FILE=%s\n", | |
2624 | link->lldp_file); | |
2625 | } else | |
2626 | unlink(link->lldp_file); | |
2627 | ||
c2d6bd61 LP |
2628 | r = fflush_and_check(f); |
2629 | if (r < 0) | |
2630 | goto fail; | |
fe8db0c5 | 2631 | |
c2d6bd61 | 2632 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 2633 | r = -errno; |
c2d6bd61 | 2634 | goto fail; |
fe8db0c5 TG |
2635 | } |
2636 | ||
c2d6bd61 | 2637 | return 0; |
dacd6cee | 2638 | |
c2d6bd61 | 2639 | fail: |
6a7a4e4d | 2640 | (void) unlink(link->state_file); |
6a7a4e4d LP |
2641 | if (temp_path) |
2642 | (void) unlink(temp_path); | |
2643 | ||
dacd6cee | 2644 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
2645 | } |
2646 | ||
84de38c5 TG |
2647 | /* The serialized state in /run is no longer up-to-date. */ |
2648 | void link_dirty(Link *link) { | |
2649 | int r; | |
2650 | ||
2651 | assert(link); | |
2652 | ||
2653 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); | |
2654 | if (r < 0) | |
2655 | /* allocation errors are ignored */ | |
2656 | return; | |
2657 | ||
2658 | r = set_put(link->manager->dirty_links, link); | |
2659 | if (r < 0) | |
2660 | /* allocation errors are ignored */ | |
2661 | return; | |
2662 | ||
2663 | link_ref(link); | |
2664 | } | |
2665 | ||
2666 | /* The serialized state in /run is up-to-date */ | |
2667 | void link_clean(Link *link) { | |
2668 | assert(link); | |
2669 | assert(link->manager); | |
2670 | ||
2671 | set_remove(link->manager->dirty_links, link); | |
2672 | link_unref(link); | |
2673 | } | |
2674 | ||
fe8db0c5 | 2675 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 2676 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
2677 | [LINK_STATE_ENSLAVING] = "configuring", |
2678 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
2679 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
2680 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 2681 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2682 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2683 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2684 | }; |
2685 | ||
2686 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
2687 | |
2688 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
2689 | [LINK_OPERSTATE_OFF] = "off", |
2690 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
2691 | [LINK_OPERSTATE_DORMANT] = "dormant", |
2692 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
2693 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
2694 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
2695 | }; | |
2696 | ||
2697 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |