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