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f579559b TG |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
20 | #include <netinet/ether.h> | |
21 | #include <linux/if.h> | |
4cc7a82c | 22 | #include <unistd.h> |
f579559b | 23 | |
b5efdb8a | 24 | #include "alloc-util.h" |
1346b1f0 | 25 | #include "bus-util.h" |
bd91b83e | 26 | #include "dhcp-lease-internal.h" |
3ffd4af2 | 27 | #include "fd-util.h" |
cf1d700d | 28 | #include "fileio.h" |
34437b4f | 29 | #include "lldp.h" |
cf1d700d | 30 | #include "netlink-util.h" |
c6f7c917 | 31 | #include "network-internal.h" |
3ffd4af2 | 32 | #include "networkd-link.h" |
8e1ad1ea | 33 | #include "networkd-lldp-tx.h" |
3ffd4af2 | 34 | #include "networkd-netdev.h" |
cf1d700d TG |
35 | #include "set.h" |
36 | #include "socket-util.h" | |
15a5e950 | 37 | #include "stdio-util.h" |
8b43440b | 38 | #include "string-table.h" |
cf1d700d TG |
39 | #include "udev-util.h" |
40 | #include "util.h" | |
41 | #include "virt.h" | |
fc2f9534 | 42 | |
b9d74c40 LP |
43 | static bool link_dhcp6_enabled(Link *link) { |
44 | assert(link); | |
45 | ||
78c958f8 TG |
46 | if (link->flags & IFF_LOOPBACK) |
47 | return false; | |
48 | ||
49 | if (!link->network) | |
50 | return false; | |
51 | ||
e0ee46f2 | 52 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
53 | } |
54 | ||
b9d74c40 LP |
55 | static bool link_dhcp4_enabled(Link *link) { |
56 | assert(link); | |
57 | ||
78c958f8 TG |
58 | if (link->flags & IFF_LOOPBACK) |
59 | return false; | |
60 | ||
61 | if (!link->network) | |
62 | return false; | |
63 | ||
e0ee46f2 | 64 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
65 | } |
66 | ||
b9d74c40 LP |
67 | static bool link_dhcp4_server_enabled(Link *link) { |
68 | assert(link); | |
69 | ||
78c958f8 TG |
70 | if (link->flags & IFF_LOOPBACK) |
71 | return false; | |
72 | ||
73 | if (!link->network) | |
74 | return false; | |
75 | ||
76 | return link->network->dhcp_server; | |
77 | } | |
78 | ||
b9d74c40 LP |
79 | static bool link_ipv4ll_enabled(Link *link) { |
80 | assert(link); | |
81 | ||
78c958f8 TG |
82 | if (link->flags & IFF_LOOPBACK) |
83 | return false; | |
84 | ||
85 | if (!link->network) | |
86 | return false; | |
87 | ||
e0ee46f2 | 88 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
89 | } |
90 | ||
b9d74c40 LP |
91 | static bool link_ipv6ll_enabled(Link *link) { |
92 | assert(link); | |
93 | ||
d0d6a4cd TG |
94 | if (link->flags & IFF_LOOPBACK) |
95 | return false; | |
96 | ||
97 | if (!link->network) | |
98 | return false; | |
99 | ||
e0ee46f2 | 100 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
101 | } |
102 | ||
8e1ad1ea | 103 | static bool link_lldp_rx_enabled(Link *link) { |
b710e6b6 LP |
104 | assert(link); |
105 | ||
ce43e484 SS |
106 | if (link->flags & IFF_LOOPBACK) |
107 | return false; | |
108 | ||
b710e6b6 LP |
109 | if (link->iftype != ARPHRD_ETHER) |
110 | return false; | |
111 | ||
ce43e484 SS |
112 | if (!link->network) |
113 | return false; | |
114 | ||
5a8bcb67 | 115 | if (link->network->bridge) |
ce43e484 SS |
116 | return false; |
117 | ||
34437b4f | 118 | return link->network->lldp_mode != LLDP_MODE_NO; |
ce43e484 SS |
119 | } |
120 | ||
8e1ad1ea LP |
121 | static bool link_lldp_tx_enabled(Link *link) { |
122 | assert(link); | |
123 | ||
124 | if (link->flags & IFF_LOOPBACK) | |
125 | return false; | |
126 | ||
127 | if (link->iftype != ARPHRD_ETHER) | |
128 | return false; | |
129 | ||
130 | if (!link->network) | |
131 | return false; | |
132 | ||
133 | return link->network->lldp_emit; | |
134 | } | |
135 | ||
769d324c | 136 | static bool link_ipv4_forward_enabled(Link *link) { |
b9d74c40 LP |
137 | assert(link); |
138 | ||
5a8bcb67 LP |
139 | if (link->flags & IFF_LOOPBACK) |
140 | return false; | |
141 | ||
142 | if (!link->network) | |
143 | return false; | |
144 | ||
765afd5c LP |
145 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
146 | return false; | |
147 | ||
e0ee46f2 | 148 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
149 | } |
150 | ||
151 | static bool link_ipv6_forward_enabled(Link *link) { | |
b9d74c40 | 152 | assert(link); |
765afd5c LP |
153 | |
154 | if (!socket_ipv6_is_supported()) | |
155 | return false; | |
156 | ||
769d324c LP |
157 | if (link->flags & IFF_LOOPBACK) |
158 | return false; | |
159 | ||
160 | if (!link->network) | |
161 | return false; | |
162 | ||
765afd5c LP |
163 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
164 | return false; | |
165 | ||
e0ee46f2 | 166 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
167 | } |
168 | ||
b9d74c40 LP |
169 | static bool link_ipv6_accept_ra_enabled(Link *link) { |
170 | assert(link); | |
171 | ||
f5a8c43f TG |
172 | if (link->flags & IFF_LOOPBACK) |
173 | return false; | |
174 | ||
175 | if (!link->network) | |
176 | return false; | |
177 | ||
178 | /* If unset use system default (enabled if local forwarding is disabled. | |
179 | * disabled if local forwarding is enabled). | |
180 | * If set, ignore or enforce RA independent of local forwarding state. | |
181 | */ | |
182 | if (link->network->ipv6_accept_ra < 0) | |
183 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ | |
184 | return !link_ipv6_forward_enabled(link); | |
185 | else if (link->network->ipv6_accept_ra > 0) | |
186 | /* accept RA even if ip_forward is enabled */ | |
187 | return true; | |
188 | else | |
189 | /* ignore RA */ | |
190 | return false; | |
191 | } | |
192 | ||
1f0d9695 | 193 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
d68e2e59 LP |
194 | |
195 | if (!socket_ipv6_is_supported()) | |
196 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; | |
197 | ||
49092e22 | 198 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 199 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
200 | |
201 | if (!link->network) | |
1f0d9695 | 202 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
203 | |
204 | return link->network->ipv6_privacy_extensions; | |
205 | } | |
206 | ||
84de38c5 TG |
207 | void link_update_operstate(Link *link) { |
208 | LinkOperationalState operstate; | |
209 | assert(link); | |
210 | ||
211 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
212 | operstate = LINK_OPERSTATE_DORMANT; | |
213 | else if (link_has_carrier(link)) { | |
214 | Address *address; | |
215 | uint8_t scope = RT_SCOPE_NOWHERE; | |
216 | Iterator i; | |
217 | ||
218 | /* if we have carrier, check what addresses we have */ | |
219 | SET_FOREACH(address, link->addresses, i) { | |
220 | if (!address_is_ready(address)) | |
221 | continue; | |
222 | ||
223 | if (address->scope < scope) | |
224 | scope = address->scope; | |
225 | } | |
226 | ||
227 | /* for operstate we also take foreign addresses into account */ | |
228 | SET_FOREACH(address, link->addresses_foreign, i) { | |
229 | if (!address_is_ready(address)) | |
230 | continue; | |
231 | ||
232 | if (address->scope < scope) | |
233 | scope = address->scope; | |
234 | } | |
235 | ||
236 | if (scope < RT_SCOPE_SITE) | |
237 | /* universally accessible addresses found */ | |
238 | operstate = LINK_OPERSTATE_ROUTABLE; | |
239 | else if (scope < RT_SCOPE_HOST) | |
240 | /* only link or site local addresses found */ | |
241 | operstate = LINK_OPERSTATE_DEGRADED; | |
242 | else | |
243 | /* no useful addresses found */ | |
244 | operstate = LINK_OPERSTATE_CARRIER; | |
245 | } else if (link->flags & IFF_UP) | |
246 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
247 | else | |
248 | operstate = LINK_OPERSTATE_OFF; | |
249 | ||
250 | if (link->operstate != operstate) { | |
251 | link->operstate = operstate; | |
252 | link_send_changed(link, "OperationalState", NULL); | |
253 | link_dirty(link); | |
254 | manager_dirty(link->manager); | |
255 | } | |
256 | } | |
257 | ||
51d18171 TG |
258 | #define FLAG_STRING(string, flag, old, new) \ |
259 | (((old ^ new) & flag) \ | |
260 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
261 | : "") | |
262 | ||
1c4baffc | 263 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
264 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
265 | uint8_t operstate; | |
266 | int r; | |
267 | ||
268 | assert(link); | |
269 | ||
270 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
271 | if (r < 0) |
272 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 273 | |
1c4baffc | 274 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
275 | if (r < 0) |
276 | /* if we got a message without operstate, take it to mean | |
277 | the state was unchanged */ | |
278 | operstate = link->kernel_operstate; | |
279 | ||
280 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
281 | return 0; | |
282 | ||
283 | if (link->flags != flags) { | |
6a7a4e4d | 284 | 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 |
285 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
286 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
287 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
288 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
289 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
290 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
291 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
292 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
293 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
294 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
295 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
296 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
297 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
298 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
299 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
300 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
301 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
302 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
303 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
304 | ||
305 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
306 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
307 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
308 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
309 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
310 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
311 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
312 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
313 | ||
314 | /* link flags are currently at most 18 bits, let's align to | |
315 | * printing 20 */ | |
316 | if (unknown_flags_added) | |
79008bdd | 317 | log_link_debug(link, |
6a7a4e4d | 318 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
319 | unknown_flags_added); |
320 | ||
321 | if (unknown_flags_removed) | |
79008bdd | 322 | log_link_debug(link, |
6a7a4e4d | 323 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
324 | unknown_flags_removed); |
325 | } | |
326 | ||
327 | link->flags = flags; | |
328 | link->kernel_operstate = operstate; | |
329 | ||
84de38c5 | 330 | link_update_operstate(link); |
51d18171 TG |
331 | |
332 | return 0; | |
333 | } | |
334 | ||
1c4baffc | 335 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 336 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 337 | uint16_t type; |
ca4e095a | 338 | const char *ifname; |
505f8da7 | 339 | int r, ifindex; |
b710e6b6 | 340 | unsigned short iftype; |
f579559b | 341 | |
0c2f9b84 | 342 | assert(manager); |
505f8da7 | 343 | assert(message); |
f579559b TG |
344 | assert(ret); |
345 | ||
1c4baffc | 346 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
347 | if (r < 0) |
348 | return r; | |
349 | else if (type != RTM_NEWLINK) | |
350 | return -EINVAL; | |
351 | ||
352 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
353 | if (r < 0) | |
354 | return r; | |
355 | else if (ifindex <= 0) | |
356 | return -EINVAL; | |
357 | ||
b710e6b6 LP |
358 | r = sd_rtnl_message_link_get_type(message, &iftype); |
359 | if (r < 0) | |
360 | return r; | |
361 | ||
1c4baffc | 362 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
363 | if (r < 0) |
364 | return r; | |
365 | ||
f579559b TG |
366 | link = new0(Link, 1); |
367 | if (!link) | |
368 | return -ENOMEM; | |
369 | ||
14b746f7 | 370 | link->n_ref = 1; |
5a3eb5a7 | 371 | link->manager = manager; |
8434fd5c | 372 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 373 | link->rtnl_extended_attrs = true; |
505f8da7 | 374 | link->ifindex = ifindex; |
b710e6b6 | 375 | link->iftype = iftype; |
505f8da7 TG |
376 | link->ifname = strdup(ifname); |
377 | if (!link->ifname) | |
378 | return -ENOMEM; | |
f579559b | 379 | |
1c4baffc | 380 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 381 | if (r < 0) |
34437b4f | 382 | log_link_debug_errno(link, r, "MAC address not found for new device, continuing without"); |
512922f8 | 383 | |
34437b4f | 384 | if (asprintf(&link->state_file, "/run/systemd/netif/links/%d", link->ifindex) < 0) |
315db1a8 | 385 | return -ENOMEM; |
fe8db0c5 | 386 | |
34437b4f | 387 | if (asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", link->ifindex) < 0) |
68a8723c TG |
388 | return -ENOMEM; |
389 | ||
34437b4f | 390 | if (asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", link->ifindex) < 0) |
49699bac SS |
391 | return -ENOMEM; |
392 | ||
d5099efc | 393 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
394 | if (r < 0) |
395 | return r; | |
396 | ||
397 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
398 | if (r < 0) |
399 | return r; | |
400 | ||
51d18171 TG |
401 | r = link_update_flags(link, message); |
402 | if (r < 0) | |
403 | return r; | |
404 | ||
f579559b TG |
405 | *ret = link; |
406 | link = NULL; | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
14b746f7 | 411 | static void link_free(Link *link) { |
428fd0a7 | 412 | Address *address; |
0d4ad91d AR |
413 | Iterator i; |
414 | Link *carrier; | |
428fd0a7 | 415 | |
f579559b TG |
416 | if (!link) |
417 | return; | |
418 | ||
cf1d700d TG |
419 | while (!set_isempty(link->addresses)) |
420 | address_free(set_first(link->addresses)); | |
421 | ||
adda1ed9 TG |
422 | while (!set_isempty(link->addresses_foreign)) |
423 | address_free(set_first(link->addresses_foreign)); | |
424 | ||
4701725c HV |
425 | link->addresses = set_free(link->addresses); |
426 | ||
427 | link->addresses_foreign = set_free(link->addresses_foreign); | |
adda1ed9 | 428 | |
11bf3cce LP |
429 | while ((address = link->pool_addresses)) { |
430 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
431 | address_free(address); | |
432 | } | |
433 | ||
bfcdba8d | 434 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 435 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 436 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 437 | |
8e1ad1ea LP |
438 | link_lldp_tx_stop(link); |
439 | ||
68a8723c TG |
440 | free(link->lease_file); |
441 | ||
4afd3348 | 442 | sd_lldp_unref(link->lldp); |
49699bac SS |
443 | free(link->lldp_file); |
444 | ||
56cd007a | 445 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 446 | sd_dhcp6_client_unref(link->dhcp6_client); |
de1e9928 | 447 | sd_ndisc_unref(link->ndisc_router_discovery); |
4138fb2c | 448 | |
28aeb07f | 449 | if (link->manager) |
ae06ab10 | 450 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 451 | |
c166a070 | 452 | free(link->ifname); |
68a8723c | 453 | |
84de38c5 | 454 | (void)unlink(link->state_file); |
fe8db0c5 | 455 | free(link->state_file); |
c166a070 | 456 | |
b5db00e5 UTL |
457 | udev_device_unref(link->udev_device); |
458 | ||
0d4ad91d AR |
459 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
460 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
461 | hashmap_free(link->bound_to_links); | |
462 | ||
463 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
464 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
465 | hashmap_free(link->bound_by_links); | |
466 | ||
f579559b TG |
467 | free(link); |
468 | } | |
469 | ||
14b746f7 | 470 | Link *link_unref(Link *link) { |
957325b7 TG |
471 | if (!link) |
472 | return NULL; | |
473 | ||
474 | assert(link->n_ref > 0); | |
475 | ||
313cefa1 | 476 | link->n_ref--; |
957325b7 TG |
477 | |
478 | if (link->n_ref > 0) | |
479 | return NULL; | |
480 | ||
481 | link_free(link); | |
14b746f7 TG |
482 | |
483 | return NULL; | |
484 | } | |
485 | ||
486 | Link *link_ref(Link *link) { | |
957325b7 TG |
487 | if (!link) |
488 | return NULL; | |
489 | ||
490 | assert(link->n_ref > 0); | |
491 | ||
313cefa1 | 492 | link->n_ref++; |
14b746f7 TG |
493 | |
494 | return link; | |
495 | } | |
496 | ||
11a7f229 TG |
497 | int link_get(Manager *m, int ifindex, Link **ret) { |
498 | Link *link; | |
11a7f229 TG |
499 | |
500 | assert(m); | |
11a7f229 TG |
501 | assert(ifindex); |
502 | assert(ret); | |
503 | ||
ae06ab10 | 504 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
505 | if (!link) |
506 | return -ENODEV; | |
507 | ||
508 | *ret = link; | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
e331e246 TG |
513 | static void link_set_state(Link *link, LinkState state) { |
514 | assert(link); | |
515 | ||
516 | if (link->state == state) | |
517 | return; | |
518 | ||
519 | link->state = state; | |
520 | ||
521 | link_send_changed(link, "AdministrativeState", NULL); | |
522 | ||
523 | return; | |
524 | } | |
525 | ||
57bd6899 TG |
526 | static void link_enter_unmanaged(Link *link) { |
527 | assert(link); | |
528 | ||
6a7a4e4d | 529 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 530 | |
e331e246 | 531 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 532 | |
84de38c5 | 533 | link_dirty(link); |
57bd6899 TG |
534 | } |
535 | ||
111bb8f9 TG |
536 | static int link_stop_clients(Link *link) { |
537 | int r = 0, k; | |
538 | ||
539 | assert(link); | |
540 | assert(link->manager); | |
541 | assert(link->manager->event); | |
542 | ||
ba179154 | 543 | if (link->dhcp_client) { |
111bb8f9 | 544 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 545 | if (k < 0) |
36c7d709 | 546 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
547 | } |
548 | ||
ba179154 | 549 | if (link->ipv4ll) { |
111bb8f9 | 550 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d | 551 | if (k < 0) |
36c7d709 | 552 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); |
dd43110f TG |
553 | } |
554 | ||
f5a8c43f TG |
555 | if (link->dhcp6_client) { |
556 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
557 | if (k < 0) | |
36c7d709 | 558 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); |
f5a8c43f | 559 | } |
4138fb2c | 560 | |
f5a8c43f | 561 | if (link->ndisc_router_discovery) { |
de1e9928 | 562 | k = sd_ndisc_stop(link->ndisc_router_discovery); |
6a7a4e4d | 563 | if (k < 0) |
36c7d709 | 564 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
565 | } |
566 | ||
8e1ad1ea | 567 | link_lldp_tx_stop(link); |
111bb8f9 TG |
568 | return r; |
569 | } | |
570 | ||
b22d8a00 | 571 | void link_enter_failed(Link *link) { |
ef1ba606 | 572 | assert(link); |
f882c247 | 573 | |
370e9930 | 574 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
575 | return; |
576 | ||
6a7a4e4d | 577 | log_link_warning(link, "Failed"); |
449f7554 | 578 | |
e331e246 | 579 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 580 | |
111bb8f9 TG |
581 | link_stop_clients(link); |
582 | ||
84de38c5 | 583 | link_dirty(link); |
f882c247 TG |
584 | } |
585 | ||
4f434938 LP |
586 | static Address* link_find_dhcp_server_address(Link *link) { |
587 | Address *address; | |
588 | ||
589 | assert(link); | |
590 | assert(link->network); | |
591 | ||
d4cdbea5 | 592 | /* The first statically configured address if there is any */ |
4f434938 LP |
593 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
594 | ||
595 | if (address->family != AF_INET) | |
596 | continue; | |
597 | ||
af93291c | 598 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
599 | continue; |
600 | ||
601 | return address; | |
602 | } | |
603 | ||
604 | /* If that didn't work, find a suitable address we got from the pool */ | |
605 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
606 | if (address->family != AF_INET) | |
607 | continue; | |
608 | ||
609 | return address; | |
610 | } | |
611 | ||
612 | return NULL; | |
613 | } | |
614 | ||
dd43110f | 615 | static int link_enter_configured(Link *link) { |
dd43110f TG |
616 | assert(link); |
617 | assert(link->network); | |
618 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
619 | ||
6a7a4e4d | 620 | log_link_info(link, "Configured"); |
dd43110f | 621 | |
e331e246 | 622 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 623 | |
84de38c5 | 624 | link_dirty(link); |
dd43110f TG |
625 | |
626 | return 0; | |
627 | } | |
628 | ||
8012cd39 TG |
629 | void link_check_ready(Link *link) { |
630 | Address *a; | |
631 | Iterator i; | |
632 | ||
3c9b8860 | 633 | assert(link); |
adda1ed9 TG |
634 | |
635 | if (!link->network) | |
636 | return; | |
3c9b8860 TG |
637 | |
638 | if (!link->static_configured) | |
639 | return; | |
640 | ||
78c958f8 | 641 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
642 | if (!link->ipv4ll_address || |
643 | !link->ipv4ll_route) | |
644 | return; | |
645 | ||
e7ab854c | 646 | if (link_ipv6ll_enabled(link)) |
c601ebf7 | 647 | if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) > 0) |
e7ab854c TG |
648 | return; |
649 | ||
3ada37a2 PF |
650 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
651 | !link->dhcp4_configured) || | |
652 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
653 | !link->dhcp6_configured) || | |
654 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
655 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
18d29550 PF |
656 | return; |
657 | ||
fe307276 TG |
658 | if (link_ipv6_accept_ra_enabled(link) && !link->ndisc_configured) |
659 | return; | |
660 | ||
8012cd39 TG |
661 | SET_FOREACH(a, link->addresses, i) |
662 | if (!address_is_ready(a)) | |
663 | return; | |
664 | ||
9fdaa992 TG |
665 | if (link->state != LINK_STATE_CONFIGURED) |
666 | link_enter_configured(link); | |
3c9b8860 TG |
667 | |
668 | return; | |
669 | } | |
670 | ||
1c4baffc | 671 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 672 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
673 | int r; |
674 | ||
3c9b8860 | 675 | assert(link->link_messages > 0); |
370e9930 TG |
676 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
677 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
678 | LINK_STATE_LINGER)); | |
f882c247 | 679 | |
313cefa1 | 680 | link->link_messages--; |
f882c247 | 681 | |
77a008c0 | 682 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
683 | return 1; |
684 | ||
1c4baffc | 685 | r = sd_netlink_message_get_errno(m); |
c166a070 | 686 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 687 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 688 | |
3c9b8860 | 689 | if (link->link_messages == 0) { |
6a7a4e4d | 690 | log_link_debug(link, "Routes set"); |
3c9b8860 | 691 | link->static_configured = true; |
8012cd39 | 692 | link_check_ready(link); |
dd3efc09 | 693 | } |
f882c247 TG |
694 | |
695 | return 1; | |
696 | } | |
697 | ||
698 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 699 | Route *rt; |
f882c247 TG |
700 | int r; |
701 | ||
702 | assert(link); | |
703 | assert(link->network); | |
ef1ba606 | 704 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 705 | |
e331e246 | 706 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 707 | |
3d3d4255 | 708 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 709 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 710 | if (r < 0) { |
6a7a4e4d | 711 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 712 | link_enter_failed(link); |
a6cc569e TG |
713 | return r; |
714 | } | |
715 | ||
313cefa1 | 716 | link->link_messages++; |
8ddbeaa2 | 717 | } |
f5be5601 | 718 | |
3c9b8860 TG |
719 | if (link->link_messages == 0) { |
720 | link->static_configured = true; | |
8012cd39 | 721 | link_check_ready(link); |
431ca2ce | 722 | } else |
6a7a4e4d | 723 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
724 | |
725 | return 0; | |
726 | } | |
727 | ||
91b5f997 | 728 | int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 729 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
730 | int r; |
731 | ||
732 | assert(m); | |
733 | assert(link); | |
734 | assert(link->ifname); | |
735 | ||
5da8149f | 736 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
737 | return 1; |
738 | ||
1c4baffc | 739 | r = sd_netlink_message_get_errno(m); |
b90b025a | 740 | if (r < 0 && r != -ESRCH) |
a2fae7bb | 741 | log_link_warning_errno(link, r, "Could not drop route: %m"); |
5c1d3fc9 | 742 | |
5bdd314c | 743 | return 1; |
5c1d3fc9 UTL |
744 | } |
745 | ||
1c4baffc | 746 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 747 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
748 | int r; |
749 | ||
4958aee4 | 750 | assert(rtnl); |
f5be5601 TG |
751 | assert(m); |
752 | assert(link); | |
753 | assert(link->ifname); | |
3c9b8860 | 754 | assert(link->link_messages > 0); |
370e9930 TG |
755 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
756 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 757 | |
313cefa1 | 758 | link->link_messages--; |
f882c247 | 759 | |
5da8149f | 760 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
761 | return 1; |
762 | ||
1c4baffc | 763 | r = sd_netlink_message_get_errno(m); |
c166a070 | 764 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 765 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 766 | else if (r >= 0) |
200a0868 | 767 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 768 | |
3c9b8860 | 769 | if (link->link_messages == 0) { |
6a7a4e4d | 770 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 771 | link_enter_set_routes(link); |
dd3efc09 | 772 | } |
f882c247 TG |
773 | |
774 | return 1; | |
775 | } | |
776 | ||
4f5f911e LP |
777 | static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
778 | _cleanup_free_ struct in_addr *addresses = NULL; | |
779 | size_t n_addresses = 0, n_allocated = 0; | |
780 | char **a; | |
781 | ||
782 | log_debug("Copying DNS server information from %s", link->ifname); | |
783 | ||
784 | if (!link->network) | |
785 | return 0; | |
786 | ||
787 | STRV_FOREACH(a, link->network->dns) { | |
788 | struct in_addr ia; | |
789 | ||
790 | /* Only look for IPv4 addresses */ | |
791 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
792 | continue; | |
793 | ||
794 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
795 | return log_oom(); | |
796 | ||
797 | addresses[n_addresses++] = ia; | |
798 | } | |
799 | ||
27cb34f5 | 800 | if (link->network->dhcp_use_dns && |
4f5f911e LP |
801 | link->dhcp_lease) { |
802 | const struct in_addr *da = NULL; | |
803 | int n; | |
804 | ||
805 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
806 | if (n > 0) { | |
807 | ||
808 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
809 | return log_oom(); | |
810 | ||
811 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
812 | n_addresses += n; | |
813 | } | |
814 | } | |
815 | ||
816 | if (n_addresses <= 0) | |
817 | return 0; | |
818 | ||
819 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
820 | } | |
821 | ||
822 | static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { | |
823 | _cleanup_free_ struct in_addr *addresses = NULL; | |
824 | size_t n_addresses = 0, n_allocated = 0; | |
825 | char **a; | |
826 | ||
827 | if (!link->network) | |
828 | return 0; | |
829 | ||
830 | log_debug("Copying NTP server information from %s", link->ifname); | |
831 | ||
832 | STRV_FOREACH(a, link->network->ntp) { | |
833 | struct in_addr ia; | |
834 | ||
835 | /* Only look for IPv4 addresses */ | |
836 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
837 | continue; | |
838 | ||
839 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
840 | return log_oom(); | |
841 | ||
842 | addresses[n_addresses++] = ia; | |
843 | } | |
844 | ||
27cb34f5 | 845 | if (link->network->dhcp_use_ntp && |
4f5f911e LP |
846 | link->dhcp_lease) { |
847 | const struct in_addr *da = NULL; | |
848 | int n; | |
849 | ||
850 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
851 | if (n > 0) { | |
852 | ||
853 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
854 | return log_oom(); | |
855 | ||
856 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
857 | n_addresses += n; | |
858 | } | |
859 | } | |
860 | ||
861 | if (n_addresses <= 0) | |
862 | return 0; | |
863 | ||
864 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
865 | } | |
866 | ||
f882c247 | 867 | static int link_enter_set_addresses(Link *link) { |
a6cc569e | 868 | Address *ad; |
f882c247 TG |
869 | int r; |
870 | ||
871 | assert(link); | |
872 | assert(link->network); | |
f5be5601 | 873 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 874 | |
e331e246 | 875 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 876 | |
3d3d4255 | 877 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
66669078 | 878 | r = address_configure(ad, link, &address_handler, false); |
dd3efc09 | 879 | if (r < 0) { |
5a8bcb67 | 880 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
881 | link_enter_failed(link); |
882 | return r; | |
883 | } | |
884 | ||
313cefa1 | 885 | link->link_messages++; |
f882c247 TG |
886 | } |
887 | ||
d4cdbea5 TG |
888 | /* now that we can figure out a default address for the dhcp server, |
889 | start it */ | |
890 | if (link_dhcp4_server_enabled(link)) { | |
d4cdbea5 | 891 | Address *address; |
4f5f911e LP |
892 | Link *uplink = NULL; |
893 | bool acquired_uplink = false; | |
d4cdbea5 TG |
894 | |
895 | address = link_find_dhcp_server_address(link); | |
896 | if (!address) { | |
6a7a4e4d | 897 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
898 | link_enter_failed(link); |
899 | return 0; | |
900 | } | |
901 | ||
61986155 | 902 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
903 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
904 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
905 | if (r < 0) |
906 | return r; | |
907 | ||
908 | /* TODO: | |
909 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
910 | &main_address->in_addr.in); | |
911 | if (r < 0) | |
912 | return r; | |
d4cdbea5 TG |
913 | */ |
914 | ||
586ac6f7 LP |
915 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
916 | r = sd_dhcp_server_set_max_lease_time( | |
917 | link->dhcp_server, | |
918 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
919 | if (r < 0) | |
920 | return r; | |
921 | } | |
922 | ||
923 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
924 | r = sd_dhcp_server_set_default_lease_time( | |
925 | link->dhcp_server, | |
926 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
927 | if (r < 0) | |
928 | return r; | |
929 | } | |
930 | ||
1a04db0f LP |
931 | if (link->network->dhcp_server_emit_dns) { |
932 | ||
4f5f911e | 933 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 934 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
935 | else { |
936 | uplink = manager_find_uplink(link->manager, link); | |
937 | acquired_uplink = true; | |
938 | ||
939 | if (!uplink) { | |
940 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
941 | r = 0; | |
942 | } else | |
943 | r = link_push_dns_to_dhcp_server(uplink, link->dhcp_server); | |
944 | } | |
945 | if (r < 0) | |
946 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
947 | } |
948 | ||
949 | ||
950 | if (link->network->dhcp_server_emit_ntp) { | |
951 | ||
4f5f911e | 952 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 953 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
954 | else { |
955 | if (!acquired_uplink) | |
956 | uplink = manager_find_uplink(link->manager, link); | |
957 | ||
958 | if (!uplink) { | |
959 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
960 | r = 0; | |
961 | } else | |
962 | r = link_push_ntp_to_dhcp_server(uplink, link->dhcp_server); | |
963 | ||
964 | } | |
965 | if (r < 0) | |
966 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
967 | } |
968 | ||
8eb9058d LP |
969 | if (link->network->dhcp_server_emit_timezone) { |
970 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 971 | const char *tz = NULL; |
8eb9058d LP |
972 | |
973 | if (link->network->dhcp_server_timezone) | |
974 | tz = link->network->dhcp_server_timezone; | |
975 | else { | |
976 | r = get_timezone(&buffer); | |
977 | if (r < 0) | |
978 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
979 | else | |
980 | tz = buffer; | |
981 | } | |
982 | ||
983 | if (tz) { | |
984 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
985 | if (r < 0) | |
986 | return r; | |
987 | } | |
988 | } | |
989 | ||
d4cdbea5 TG |
990 | r = sd_dhcp_server_start(link->dhcp_server); |
991 | if (r < 0) { | |
6a7a4e4d | 992 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
993 | |
994 | link_enter_failed(link); | |
995 | ||
996 | return 0; | |
997 | } | |
998 | ||
6a7a4e4d | 999 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
1000 | } |
1001 | ||
6a7a4e4d | 1002 | if (link->link_messages == 0) |
431ca2ce | 1003 | link_enter_set_routes(link); |
6a7a4e4d LP |
1004 | else |
1005 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 1006 | |
f882c247 TG |
1007 | return 0; |
1008 | } | |
1009 | ||
91b5f997 | 1010 | int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1011 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
1012 | int r; |
1013 | ||
1014 | assert(m); | |
1015 | assert(link); | |
1016 | assert(link->ifname); | |
1017 | ||
5da8149f | 1018 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
1019 | return 1; |
1020 | ||
1c4baffc | 1021 | r = sd_netlink_message_get_errno(m); |
b90b025a | 1022 | if (r < 0 && r != -EADDRNOTAVAIL) |
a2fae7bb | 1023 | log_link_warning_errno(link, r, "Could not drop address: %m"); |
ff254138 | 1024 | |
5bdd314c | 1025 | return 1; |
ff254138 TG |
1026 | } |
1027 | ||
a245ced0 | 1028 | static int link_set_bridge_fdb(Link *const link) { |
b98b483b AR |
1029 | FdbEntry *fdb_entry; |
1030 | int r = 0; | |
1031 | ||
1032 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
ea6ec096 | 1033 | r = fdb_entry_configure(link, fdb_entry); |
9ed794a3 | 1034 | if (r < 0) { |
6a7a4e4d | 1035 | log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
b98b483b AR |
1036 | break; |
1037 | } | |
1038 | } | |
1039 | ||
1040 | return r; | |
1041 | } | |
1042 | ||
1c4baffc | 1043 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
1044 | _cleanup_link_unref_ Link *link = userdata; |
1045 | int r; | |
1046 | ||
6a7a4e4d | 1047 | log_link_debug(link, "Set link"); |
e1853b00 | 1048 | |
1c4baffc | 1049 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 1050 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 1051 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
1052 | link_enter_failed(link); |
1053 | return 1; | |
1054 | } | |
1055 | ||
1056 | return 0; | |
1057 | } | |
1058 | ||
19070062 | 1059 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
5da8149f | 1060 | _cleanup_link_unref_ Link *link = userdata; |
21b80ad1 | 1061 | const sd_bus_error *e; |
1346b1f0 | 1062 | |
19070062 | 1063 | assert(m); |
b226d99b TG |
1064 | assert(link); |
1065 | ||
5da8149f | 1066 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 1067 | return 1; |
370e9930 | 1068 | |
21b80ad1 LP |
1069 | e = sd_bus_message_get_error(m); |
1070 | if (e) | |
1071 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); | |
1346b1f0 TG |
1072 | |
1073 | return 1; | |
1074 | } | |
1075 | ||
3c9b8860 | 1076 | int link_set_hostname(Link *link, const char *hostname) { |
21b80ad1 | 1077 | int r; |
1346b1f0 | 1078 | |
b226d99b TG |
1079 | assert(link); |
1080 | assert(link->manager); | |
1346b1f0 | 1081 | |
dce391e7 | 1082 | log_link_debug(link, "Setting transient hostname: '%s'", strna(hostname)); |
1346b1f0 | 1083 | |
3c9b8860 TG |
1084 | if (!link->manager->bus) { |
1085 | /* TODO: replace by assert when we can rely on kdbus */ | |
6a7a4e4d | 1086 | log_link_info(link, "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
1087 | return 0; |
1088 | } | |
1089 | ||
9c34154a | 1090 | r = sd_bus_call_method_async( |
b226d99b | 1091 | link->manager->bus, |
9c34154a | 1092 | NULL, |
1346b1f0 TG |
1093 | "org.freedesktop.hostname1", |
1094 | "/org/freedesktop/hostname1", | |
1095 | "org.freedesktop.hostname1", | |
9c34154a UTL |
1096 | "SetHostname", |
1097 | set_hostname_handler, | |
1098 | link, | |
1099 | "sb", | |
1100 | hostname, | |
1101 | false); | |
1346b1f0 | 1102 | |
6a7a4e4d LP |
1103 | if (r < 0) |
1104 | return log_link_error_errno(link, r, "Could not set transient hostname: %m"); | |
b226d99b TG |
1105 | |
1106 | link_ref(link); | |
1346b1f0 | 1107 | |
5da8149f | 1108 | return 0; |
1346b1f0 TG |
1109 | } |
1110 | ||
21b80ad1 LP |
1111 | static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
1112 | _cleanup_link_unref_ Link *link = userdata; | |
1113 | const sd_bus_error *e; | |
1114 | ||
1115 | assert(m); | |
1116 | assert(link); | |
1117 | ||
1118 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1119 | return 1; | |
1120 | ||
1121 | e = sd_bus_message_get_error(m); | |
1122 | if (e) | |
1123 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); | |
1124 | ||
1125 | return 1; | |
1126 | } | |
1127 | ||
64d6c229 | 1128 | int link_set_timezone(Link *link, const char *tz) { |
21b80ad1 LP |
1129 | int r; |
1130 | ||
1131 | assert(link); | |
1132 | assert(link->manager); | |
64d6c229 | 1133 | assert(tz); |
21b80ad1 | 1134 | |
64d6c229 | 1135 | log_link_debug(link, "Setting system timezone: '%s'", tz); |
21b80ad1 LP |
1136 | |
1137 | if (!link->manager->bus) { | |
1138 | log_link_info(link, "Not connected to system bus, ignoring timezone."); | |
1139 | return 0; | |
1140 | } | |
1141 | ||
1142 | r = sd_bus_call_method_async( | |
1143 | link->manager->bus, | |
1144 | NULL, | |
1145 | "org.freedesktop.timedate1", | |
1146 | "/org/freedesktop/timedate1", | |
1147 | "org.freedesktop.timedate1", | |
1148 | "SetTimezone", | |
1149 | set_timezone_handler, | |
1150 | link, | |
1151 | "sb", | |
64d6c229 | 1152 | tz, |
21b80ad1 LP |
1153 | false); |
1154 | if (r < 0) | |
1155 | return log_link_error_errno(link, r, "Could not set timezone: %m"); | |
1156 | ||
1157 | link_ref(link); | |
1158 | ||
1159 | return 0; | |
1160 | } | |
1161 | ||
1c4baffc | 1162 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1163 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
1164 | int r; |
1165 | ||
1166 | assert(m); | |
1167 | assert(link); | |
1168 | assert(link->ifname); | |
1169 | ||
5da8149f | 1170 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1171 | return 1; |
1172 | ||
1c4baffc | 1173 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 1174 | if (r < 0) |
a2fae7bb | 1175 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
4f882b2a TG |
1176 | |
1177 | return 1; | |
1178 | } | |
1179 | ||
3c9b8860 | 1180 | int link_set_mtu(Link *link, uint32_t mtu) { |
4afd3348 | 1181 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f882b2a TG |
1182 | int r; |
1183 | ||
1184 | assert(link); | |
1185 | assert(link->manager); | |
1186 | assert(link->manager->rtnl); | |
1187 | ||
6a7a4e4d | 1188 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1189 | |
6a7a4e4d LP |
1190 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1191 | if (r < 0) | |
1192 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1193 | |
1c4baffc | 1194 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1195 | if (r < 0) |
1196 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1197 | |
1c4baffc | 1198 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
1199 | if (r < 0) |
1200 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1201 | |
ae941762 | 1202 | link_ref(link); |
b226d99b | 1203 | |
4f882b2a TG |
1204 | return 0; |
1205 | } | |
1206 | ||
e1853b00 | 1207 | static int link_set_bridge(Link *link) { |
4afd3348 | 1208 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
e1853b00 SS |
1209 | int r; |
1210 | ||
1211 | assert(link); | |
1212 | assert(link->network); | |
1213 | ||
6a7a4e4d LP |
1214 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1215 | if (r < 0) | |
1216 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1217 | |
1218 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1219 | if (r < 0) |
1220 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1221 | |
1c4baffc | 1222 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1223 | if (r < 0) |
1224 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1225 | |
84c34096 | 1226 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, !link->network->use_bpdu); |
eb7ff4dd SS |
1227 | if (r < 0) |
1228 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1229 | ||
1230 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1231 | if (r < 0) | |
1232 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1233 | ||
1234 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1235 | if (r < 0) | |
1236 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1237 | ||
23da66bb | 1238 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, !link->network->allow_port_to_be_root); |
eb7ff4dd SS |
1239 | if (r < 0) |
1240 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
1241 | ||
1242 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1243 | if (r < 0) | |
1244 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
1245 | ||
34437b4f | 1246 | if (link->network->cost != 0) { |
1c4baffc | 1247 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1248 | if (r < 0) |
1249 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 SS |
1250 | } |
1251 | ||
1c4baffc | 1252 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1253 | if (r < 0) |
1254 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1255 | |
1c4baffc | 1256 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
1257 | if (r < 0) |
1258 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1259 | |
1260 | link_ref(link); | |
1261 | ||
1262 | return r; | |
1263 | } | |
1264 | ||
34437b4f LP |
1265 | static int link_lldp_save(Link *link) { |
1266 | _cleanup_free_ char *temp_path = NULL; | |
1267 | _cleanup_fclose_ FILE *f = NULL; | |
1268 | sd_lldp_neighbor **l = NULL; | |
1269 | int n = 0, r, i; | |
49699bac SS |
1270 | |
1271 | assert(link); | |
34437b4f LP |
1272 | assert(link->lldp_file); |
1273 | ||
1274 | if (!link->lldp) { | |
1275 | (void) unlink(link->lldp_file); | |
1276 | return 0; | |
1277 | } | |
1278 | ||
1279 | r = sd_lldp_get_neighbors(link->lldp, &l); | |
1280 | if (r < 0) | |
1281 | goto finish; | |
1282 | if (r == 0) { | |
1283 | (void) unlink(link->lldp_file); | |
1284 | goto finish; | |
1285 | } | |
1286 | ||
1287 | n = r; | |
1288 | ||
1289 | r = fopen_temporary(link->lldp_file, &f, &temp_path); | |
1290 | if (r < 0) | |
1291 | goto finish; | |
1292 | ||
1293 | fchmod(fileno(f), 0644); | |
49699bac | 1294 | |
34437b4f LP |
1295 | for (i = 0; i < n; i++) { |
1296 | const void *p; | |
1297 | le64_t u; | |
1298 | size_t sz; | |
1299 | ||
1300 | r = sd_lldp_neighbor_get_raw(l[i], &p, &sz); | |
9ef61f2e | 1301 | if (r < 0) |
34437b4f LP |
1302 | goto finish; |
1303 | ||
1304 | u = htole64(sz); | |
1305 | (void) fwrite(&u, 1, sizeof(u), f); | |
1306 | (void) fwrite(p, 1, sz, f); | |
1307 | } | |
49699bac | 1308 | |
34437b4f LP |
1309 | r = fflush_and_check(f); |
1310 | if (r < 0) | |
1311 | goto finish; | |
1312 | ||
1313 | if (rename(temp_path, link->lldp_file) < 0) { | |
1314 | r = -errno; | |
1315 | goto finish; | |
9ef61f2e | 1316 | } |
34437b4f LP |
1317 | |
1318 | finish: | |
1319 | if (r < 0) { | |
1320 | (void) unlink(link->lldp_file); | |
1321 | if (temp_path) | |
1322 | (void) unlink(temp_path); | |
1323 | ||
1324 | log_link_error_errno(link, r, "Failed to save LLDP data to %s: %m", link->lldp_file); | |
1325 | } | |
1326 | ||
1327 | if (l) { | |
1328 | for (i = 0; i < n; i++) | |
1329 | sd_lldp_neighbor_unref(l[i]); | |
1330 | free(l); | |
1331 | } | |
1332 | ||
1333 | return r; | |
1334 | } | |
1335 | ||
90dffb22 | 1336 | static void lldp_handler(sd_lldp *lldp, sd_lldp_event event, sd_lldp_neighbor *n, void *userdata) { |
34437b4f | 1337 | Link *link = userdata; |
90dffb22 | 1338 | int r; |
34437b4f LP |
1339 | |
1340 | assert(link); | |
1341 | ||
1342 | (void) link_lldp_save(link); | |
90dffb22 LP |
1343 | |
1344 | if (link_lldp_tx_enabled(link) && event == SD_LLDP_EVENT_ADDED) { | |
1345 | /* If we received information about a new neighbor, restart the LLDP "fast" logic */ | |
1346 | ||
1347 | log_link_debug(link, "Received LLDP datagram from previously unknown neighbor, restarting 'fast' LLDP transmission."); | |
1348 | ||
1349 | r = link_lldp_tx_start(link); | |
1350 | if (r < 0) | |
1351 | log_link_warning_errno(link, r, "Failed to restart LLDP transmission: %m"); | |
1352 | } | |
49699bac SS |
1353 | } |
1354 | ||
e7ab854c TG |
1355 | static int link_acquire_ipv6_conf(Link *link) { |
1356 | int r; | |
1357 | ||
1358 | assert(link); | |
1359 | ||
1360 | if (link_dhcp6_enabled(link)) { | |
1361 | assert(link->dhcp6_client); | |
c601ebf7 | 1362 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); |
e7ab854c TG |
1363 | |
1364 | log_link_debug(link, "Acquiring DHCPv6 lease"); | |
1365 | ||
c601ebf7 TG |
1366 | r = sd_dhcp6_client_set_local_address(link->dhcp6_client, &link->ipv6ll_address); |
1367 | if (r < 0 && r != -EBUSY) | |
1368 | return log_link_warning_errno(link, r, "Could not set IPv6LL address in DHCP client: %m"); | |
1369 | ||
e7ab854c | 1370 | r = sd_dhcp6_client_start(link->dhcp6_client); |
63348d13 | 1371 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1372 | return log_link_warning_errno(link, r, "Could not acquire DHCPv6 lease: %m"); |
1373 | } | |
1374 | ||
1375 | if (link_ipv6_accept_ra_enabled(link)) { | |
1376 | assert(link->ndisc_router_discovery); | |
1377 | ||
1378 | log_link_debug(link, "Discovering IPv6 routers"); | |
1379 | ||
1380 | r = sd_ndisc_router_discovery_start(link->ndisc_router_discovery); | |
63348d13 | 1381 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1382 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
1383 | } | |
1384 | ||
1385 | return 0; | |
1386 | } | |
1387 | ||
ff254138 TG |
1388 | static int link_acquire_conf(Link *link) { |
1389 | int r; | |
1390 | ||
1391 | assert(link); | |
1392 | assert(link->network); | |
ff254138 TG |
1393 | assert(link->manager); |
1394 | assert(link->manager->event); | |
1395 | ||
78c958f8 | 1396 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1397 | assert(link->ipv4ll); |
ff254138 | 1398 | |
6a7a4e4d | 1399 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1400 | |
1401 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1402 | if (r < 0) |
1403 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1404 | } |
1405 | ||
78c958f8 | 1406 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1407 | assert(link->dhcp_client); |
ff254138 | 1408 | |
6a7a4e4d | 1409 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1410 | |
5c1d3fc9 | 1411 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1412 | if (r < 0) |
1413 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1414 | } |
ff254138 | 1415 | |
8e1ad1ea LP |
1416 | if (link_lldp_tx_enabled(link)) { |
1417 | r = link_lldp_tx_start(link); | |
1418 | if (r < 0) | |
1419 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
1420 | } | |
1421 | ||
ff254138 TG |
1422 | return 0; |
1423 | } | |
1424 | ||
a61bb41c | 1425 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1426 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1427 | ||
a61bb41c | 1428 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1429 | return true; |
1430 | ||
a61bb41c | 1431 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1432 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1433 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1434 | return true; |
1435 | ||
1436 | return false; | |
1437 | } | |
1438 | ||
1c4baffc | 1439 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1440 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1441 | int r; |
1442 | ||
1746cf2a TG |
1443 | assert(link); |
1444 | ||
5da8149f | 1445 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1446 | return 1; |
1447 | ||
1c4baffc | 1448 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
1449 | if (r < 0) |
1450 | /* we warn but don't fail the link, as it may be | |
1451 | brought up later */ | |
a2fae7bb | 1452 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1453 | |
f882c247 TG |
1454 | return 1; |
1455 | } | |
1456 | ||
1457 | static int link_up(Link *link) { | |
4afd3348 | 1458 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
5c3072ea | 1459 | uint8_t ipv6ll_mode; |
f579559b TG |
1460 | int r; |
1461 | ||
f882c247 | 1462 | assert(link); |
c106cc36 | 1463 | assert(link->network); |
f882c247 TG |
1464 | assert(link->manager); |
1465 | assert(link->manager->rtnl); | |
1466 | ||
6a7a4e4d | 1467 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1468 | |
6a7a4e4d LP |
1469 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1470 | if (r < 0) | |
1471 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1472 | |
5d4795f3 | 1473 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1474 | if (r < 0) |
1475 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1476 | |
c106cc36 | 1477 | if (link->network->mac) { |
1c4baffc | 1478 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1479 | if (r < 0) |
1480 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1481 | } |
1482 | ||
1483 | if (link->network->mtu) { | |
1c4baffc | 1484 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1485 | if (r < 0) |
1486 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1487 | } |
1488 | ||
1c4baffc | 1489 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1490 | if (r < 0) |
1491 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1492 | |
01d28f81 TG |
1493 | if (socket_ipv6_is_supported()) { |
1494 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ | |
1c4baffc | 1495 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1496 | if (r < 0) |
1497 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1498 | |
01d28f81 | 1499 | ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE; |
1c4baffc | 1500 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1501 | if (r < 0) |
1502 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1503 | |
01d28f81 | 1504 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1505 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1506 | if (r < 0) |
1507 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1508 | } | |
1509 | ||
1c4baffc | 1510 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1511 | if (r < 0) |
01d28f81 | 1512 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1513 | } |
d0d6a4cd | 1514 | |
1c4baffc | 1515 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1516 | if (r < 0) |
1517 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1518 | |
1c4baffc | 1519 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1520 | if (r < 0) |
1521 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1522 | |
b226d99b TG |
1523 | link_ref(link); |
1524 | ||
f882c247 TG |
1525 | return 0; |
1526 | } | |
1527 | ||
1c4baffc | 1528 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1529 | _cleanup_link_unref_ Link *link = userdata; |
1530 | int r; | |
1531 | ||
1532 | assert(link); | |
1533 | ||
1534 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1535 | return 1; | |
1536 | ||
1c4baffc | 1537 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1538 | if (r < 0) |
a2fae7bb | 1539 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d AR |
1540 | |
1541 | return 1; | |
1542 | } | |
1543 | ||
1544 | static int link_down(Link *link) { | |
4afd3348 | 1545 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
0d4ad91d AR |
1546 | int r; |
1547 | ||
1548 | assert(link); | |
1549 | assert(link->manager); | |
1550 | assert(link->manager->rtnl); | |
1551 | ||
6a7a4e4d | 1552 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1553 | |
1554 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1555 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1556 | if (r < 0) |
1557 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1558 | |
1559 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1560 | if (r < 0) |
1561 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1562 | |
1c4baffc | 1563 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1564 | if (r < 0) |
1565 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1566 | |
1567 | link_ref(link); | |
1568 | ||
1569 | return 0; | |
1570 | } | |
1571 | ||
1572 | static int link_handle_bound_to_list(Link *link) { | |
1573 | Link *l; | |
1574 | Iterator i; | |
1575 | int r; | |
1576 | bool required_up = false; | |
1577 | bool link_is_up = false; | |
1578 | ||
1579 | assert(link); | |
1580 | ||
1581 | if (hashmap_isempty(link->bound_to_links)) | |
1582 | return 0; | |
1583 | ||
1584 | if (link->flags & IFF_UP) | |
1585 | link_is_up = true; | |
1586 | ||
1587 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1588 | if (link_has_carrier(l)) { | |
1589 | required_up = true; | |
1590 | break; | |
1591 | } | |
1592 | ||
1593 | if (!required_up && link_is_up) { | |
1594 | r = link_down(link); | |
1595 | if (r < 0) | |
1596 | return r; | |
1597 | } else if (required_up && !link_is_up) { | |
1598 | r = link_up(link); | |
1599 | if (r < 0) | |
1600 | return r; | |
1601 | } | |
1602 | ||
1603 | return 0; | |
1604 | } | |
1605 | ||
1606 | static int link_handle_bound_by_list(Link *link) { | |
1607 | Iterator i; | |
1608 | Link *l; | |
1609 | int r; | |
1610 | ||
1611 | assert(link); | |
1612 | ||
1613 | if (hashmap_isempty(link->bound_by_links)) | |
1614 | return 0; | |
1615 | ||
1616 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1617 | r = link_handle_bound_to_list(l); | |
1618 | if (r < 0) | |
1619 | return r; | |
1620 | } | |
1621 | ||
1622 | return 0; | |
1623 | } | |
1624 | ||
1625 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1626 | int r; | |
1627 | ||
1628 | assert(link); | |
1629 | assert(carrier); | |
1630 | ||
1631 | if (link == carrier) | |
1632 | return 0; | |
1633 | ||
1634 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1635 | return 0; | |
1636 | ||
1637 | r = hashmap_ensure_allocated(h, NULL); | |
1638 | if (r < 0) | |
1639 | return r; | |
1640 | ||
1641 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1642 | if (r < 0) | |
1643 | return r; | |
1644 | ||
1645 | return 0; | |
1646 | } | |
1647 | ||
1648 | static int link_new_bound_by_list(Link *link) { | |
1649 | Manager *m; | |
1650 | Link *carrier; | |
1651 | Iterator i; | |
1652 | int r; | |
1653 | bool list_updated = false; | |
1654 | ||
1655 | assert(link); | |
1656 | assert(link->manager); | |
1657 | ||
1658 | m = link->manager; | |
1659 | ||
b295beea | 1660 | HASHMAP_FOREACH(carrier, m->links, i) { |
0d4ad91d AR |
1661 | if (!carrier->network) |
1662 | continue; | |
1663 | ||
1664 | if (strv_isempty(carrier->network->bind_carrier)) | |
1665 | continue; | |
1666 | ||
1667 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1668 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1669 | if (r < 0) | |
1670 | return r; | |
1671 | ||
1672 | list_updated = true; | |
1673 | } | |
1674 | } | |
1675 | ||
1676 | if (list_updated) | |
84de38c5 | 1677 | link_dirty(link); |
0d4ad91d | 1678 | |
b295beea | 1679 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
0d4ad91d AR |
1680 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
1681 | if (r < 0) | |
1682 | return r; | |
1683 | ||
84de38c5 | 1684 | link_dirty(carrier); |
0d4ad91d AR |
1685 | } |
1686 | ||
1687 | return 0; | |
1688 | } | |
1689 | ||
1690 | static int link_new_bound_to_list(Link *link) { | |
1691 | Manager *m; | |
1692 | Link *carrier; | |
1693 | Iterator i; | |
1694 | int r; | |
1695 | bool list_updated = false; | |
1696 | ||
1697 | assert(link); | |
1698 | assert(link->manager); | |
1699 | ||
1700 | if (!link->network) | |
1701 | return 0; | |
1702 | ||
1703 | if (strv_isempty(link->network->bind_carrier)) | |
1704 | return 0; | |
1705 | ||
1706 | m = link->manager; | |
1707 | ||
1708 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1709 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1710 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1711 | if (r < 0) | |
1712 | return r; | |
1713 | ||
1714 | list_updated = true; | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | if (list_updated) | |
84de38c5 | 1719 | link_dirty(link); |
0d4ad91d AR |
1720 | |
1721 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1722 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1723 | if (r < 0) | |
1724 | return r; | |
1725 | ||
84de38c5 | 1726 | link_dirty(carrier); |
0d4ad91d AR |
1727 | } |
1728 | ||
1729 | return 0; | |
1730 | } | |
1731 | ||
1732 | static int link_new_carrier_maps(Link *link) { | |
1733 | int r; | |
1734 | ||
1735 | r = link_new_bound_by_list(link); | |
1736 | if (r < 0) | |
1737 | return r; | |
1738 | ||
1739 | r = link_handle_bound_by_list(link); | |
1740 | if (r < 0) | |
1741 | return r; | |
1742 | ||
1743 | r = link_new_bound_to_list(link); | |
1744 | if (r < 0) | |
1745 | return r; | |
1746 | ||
1747 | r = link_handle_bound_to_list(link); | |
1748 | if (r < 0) | |
1749 | return r; | |
1750 | ||
1751 | return 0; | |
1752 | } | |
1753 | ||
1754 | static void link_free_bound_to_list(Link *link) { | |
1755 | Link *bound_to; | |
1756 | Iterator i; | |
1757 | ||
1758 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
1759 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
1760 | ||
1761 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1762 | link_dirty(bound_to); |
0d4ad91d AR |
1763 | } |
1764 | ||
1765 | return; | |
1766 | } | |
1767 | ||
1768 | static void link_free_bound_by_list(Link *link) { | |
1769 | Link *bound_by; | |
1770 | Iterator i; | |
1771 | ||
1772 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
1773 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
1774 | ||
1775 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1776 | link_dirty(bound_by); |
0d4ad91d AR |
1777 | link_handle_bound_to_list(bound_by); |
1778 | } | |
1779 | } | |
1780 | ||
1781 | return; | |
1782 | } | |
1783 | ||
1784 | static void link_free_carrier_maps(Link *link) { | |
1785 | bool list_updated = false; | |
1786 | ||
1787 | assert(link); | |
1788 | ||
1789 | if (!hashmap_isempty(link->bound_to_links)) { | |
1790 | link_free_bound_to_list(link); | |
1791 | list_updated = true; | |
1792 | } | |
1793 | ||
1794 | if (!hashmap_isempty(link->bound_by_links)) { | |
1795 | link_free_bound_by_list(link); | |
1796 | list_updated = true; | |
1797 | } | |
1798 | ||
1799 | if (list_updated) | |
84de38c5 | 1800 | link_dirty(link); |
0d4ad91d AR |
1801 | |
1802 | return; | |
1803 | } | |
1804 | ||
1805 | void link_drop(Link *link) { | |
1806 | if (!link || link->state == LINK_STATE_LINGER) | |
1807 | return; | |
1808 | ||
1809 | link_set_state(link, LINK_STATE_LINGER); | |
1810 | ||
1811 | link_free_carrier_maps(link); | |
1812 | ||
6a7a4e4d | 1813 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1814 | |
84de38c5 | 1815 | (void)unlink(link->state_file); |
0d4ad91d AR |
1816 | link_unref(link); |
1817 | ||
1818 | return; | |
1819 | } | |
1820 | ||
3f265037 | 1821 | static int link_joined(Link *link) { |
f882c247 TG |
1822 | int r; |
1823 | ||
ef1ba606 | 1824 | assert(link); |
f5be5601 | 1825 | assert(link->network); |
dd3efc09 | 1826 | |
0d4ad91d AR |
1827 | if (!hashmap_isempty(link->bound_to_links)) { |
1828 | r = link_handle_bound_to_list(link); | |
1829 | if (r < 0) | |
1830 | return r; | |
1831 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1832 | r = link_up(link); |
1833 | if (r < 0) { | |
1834 | link_enter_failed(link); | |
1835 | return r; | |
1836 | } | |
ef1ba606 | 1837 | } |
f882c247 | 1838 | |
9ed794a3 | 1839 | if (link->network->bridge) { |
e1853b00 | 1840 | r = link_set_bridge(link); |
6a7a4e4d LP |
1841 | if (r < 0) |
1842 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
1843 | } |
1844 | ||
fb6730c4 | 1845 | return link_enter_set_addresses(link); |
02b59d57 TG |
1846 | } |
1847 | ||
62e2d5bb | 1848 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1849 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1850 | int r; |
1851 | ||
1746cf2a | 1852 | assert(link); |
ef1ba606 | 1853 | assert(link->network); |
02b59d57 | 1854 | |
313cefa1 | 1855 | link->enslaving--; |
52433f6b | 1856 | |
5da8149f | 1857 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1858 | return 1; |
1859 | ||
1c4baffc | 1860 | r = sd_netlink_message_get_errno(m); |
856f962c | 1861 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 1862 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
1863 | link_enter_failed(link); |
1864 | return 1; | |
ba179154 | 1865 | } else |
6a7a4e4d | 1866 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 1867 | |
856f962c | 1868 | if (link->enslaving <= 0) |
3f265037 | 1869 | link_joined(link); |
02b59d57 TG |
1870 | |
1871 | return 1; | |
1872 | } | |
1873 | ||
3f265037 | 1874 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1875 | NetDev *netdev; |
672682a6 | 1876 | Iterator i; |
02b59d57 TG |
1877 | int r; |
1878 | ||
1879 | assert(link); | |
1880 | assert(link->network); | |
8434fd5c | 1881 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1882 | |
e331e246 | 1883 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 1884 | |
84de38c5 | 1885 | link_dirty(link); |
fe8db0c5 | 1886 | |
7951dea2 SS |
1887 | if (!link->network->bridge && |
1888 | !link->network->bond && | |
6a0a2f86 | 1889 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1890 | return link_joined(link); |
02b59d57 | 1891 | |
d9c67ea1 | 1892 | if (link->network->bond) { |
f2341e0a LP |
1893 | log_struct(LOG_DEBUG, |
1894 | LOG_LINK_INTERFACE(link), | |
1895 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1896 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
1897 | NULL); | |
1898 | ||
1899 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 1900 | if (r < 0) { |
f2341e0a LP |
1901 | log_struct_errno(LOG_WARNING, r, |
1902 | LOG_LINK_INTERFACE(link), | |
1903 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1904 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
1905 | NULL); | |
1906 | ||
52433f6b TG |
1907 | link_enter_failed(link); |
1908 | return r; | |
1909 | } | |
1910 | ||
313cefa1 | 1911 | link->enslaving++; |
0ad6148e MO |
1912 | } |
1913 | ||
d9c67ea1 | 1914 | if (link->network->bridge) { |
f2341e0a LP |
1915 | log_struct(LOG_DEBUG, |
1916 | LOG_LINK_INTERFACE(link), | |
1917 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1918 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
1919 | NULL); | |
1920 | ||
1921 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 1922 | if (r < 0) { |
f2341e0a LP |
1923 | log_struct_errno(LOG_WARNING, r, |
1924 | LOG_LINK_INTERFACE(link), | |
1925 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1926 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
1927 | NULL), | |
0ad6148e MO |
1928 | link_enter_failed(link); |
1929 | return r; | |
1930 | } | |
1931 | ||
313cefa1 | 1932 | link->enslaving++; |
52433f6b TG |
1933 | } |
1934 | ||
6a0a2f86 | 1935 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 1936 | |
f2341e0a LP |
1937 | log_struct(LOG_DEBUG, |
1938 | LOG_LINK_INTERFACE(link), | |
1939 | LOG_NETDEV_INTERFACE(netdev), | |
1940 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
1941 | NULL); | |
1942 | ||
1943 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 1944 | if (r < 0) { |
f2341e0a LP |
1945 | log_struct_errno(LOG_WARNING, r, |
1946 | LOG_LINK_INTERFACE(link), | |
1947 | LOG_NETDEV_INTERFACE(netdev), | |
1948 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
1949 | NULL); | |
326cb406 SS |
1950 | link_enter_failed(link); |
1951 | return r; | |
1952 | } | |
1953 | ||
313cefa1 | 1954 | link->enslaving++; |
326cb406 SS |
1955 | } |
1956 | ||
ef1ba606 TG |
1957 | return 0; |
1958 | } | |
1959 | ||
769d324c | 1960 | static int link_set_ipv4_forward(Link *link) { |
5a8bcb67 LP |
1961 | int r; |
1962 | ||
765afd5c | 1963 | if (!link_ipv4_forward_enabled(link)) |
15dee3f0 LP |
1964 | return 0; |
1965 | ||
765afd5c LP |
1966 | /* We propagate the forwarding flag from one interface to the |
1967 | * global setting one way. This means: as long as at least one | |
1968 | * interface was configured at any time that had IP forwarding | |
1969 | * enabled the setting will stay on for good. We do this | |
1970 | * primarily to keep IPv4 and IPv6 packet forwarding behaviour | |
1971 | * somewhat in sync (see below). */ | |
15dee3f0 | 1972 | |
765afd5c | 1973 | r = write_string_file("/proc/sys/net/ipv4/ip_forward", "1", WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
eb3da901 | 1974 | if (r < 0) |
765afd5c | 1975 | log_link_warning_errno(link, r, "Cannot turn on IPv4 packet forwarding, ignoring: %m"); |
43c6d5ab | 1976 | |
769d324c LP |
1977 | return 0; |
1978 | } | |
1979 | ||
1980 | static int link_set_ipv6_forward(Link *link) { | |
769d324c LP |
1981 | int r; |
1982 | ||
765afd5c | 1983 | if (!link_ipv6_forward_enabled(link)) |
8add5f79 NO |
1984 | return 0; |
1985 | ||
765afd5c LP |
1986 | /* On Linux, the IPv6 stack does not not know a per-interface |
1987 | * packet forwarding setting: either packet forwarding is on | |
1988 | * for all, or off for all. We hence don't bother with a | |
1989 | * per-interface setting, but simply propagate the interface | |
1990 | * flag, if it is set, to the global flag, one-way. Note that | |
1991 | * while IPv4 would allow a per-interface flag, we expose the | |
1992 | * same behaviour there and also propagate the setting from | |
1993 | * one to all, to keep things simple (see above). */ | |
15dee3f0 | 1994 | |
765afd5c | 1995 | r = write_string_file("/proc/sys/net/ipv6/conf/all/forwarding", "1", WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
eb3da901 | 1996 | if (r < 0) |
765afd5c | 1997 | log_link_warning_errno(link, r, "Cannot configure IPv6 packet forwarding, ignoring: %m"); |
5a8bcb67 LP |
1998 | |
1999 | return 0; | |
2000 | } | |
2001 | ||
49092e22 | 2002 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 LP |
2003 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; |
2004 | IPv6PrivacyExtensions s; | |
49092e22 SS |
2005 | const char *p = NULL; |
2006 | int r; | |
2007 | ||
1f0d9695 | 2008 | s = link_ipv6_privacy_extensions(link); |
66a6bd68 | 2009 | if (s < 0) |
49092e22 SS |
2010 | return 0; |
2011 | ||
2012 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
66a6bd68 | 2013 | xsprintf(buf, "%u", (unsigned) link->network->ipv6_privacy_extensions); |
49092e22 | 2014 | |
eb3da901 LP |
2015 | r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
2016 | if (r < 0) | |
49092e22 SS |
2017 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
2018 | ||
2019 | return 0; | |
2020 | } | |
2021 | ||
4f2e437a | 2022 | static int link_set_ipv6_accept_ra(Link *link) { |
3b015d40 | 2023 | const char *p = NULL; |
4f2e437a SS |
2024 | int r; |
2025 | ||
2026 | /* Make this a NOP if IPv6 is not available */ | |
2027 | if (!socket_ipv6_is_supported()) | |
2028 | return 0; | |
2029 | ||
2030 | if (link->flags & IFF_LOOPBACK) | |
2031 | return 0; | |
2032 | ||
d68e2e59 LP |
2033 | if (!link->network) |
2034 | return 0; | |
2035 | ||
4f2e437a | 2036 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); |
4f2e437a | 2037 | |
fe307276 TG |
2038 | /* We handle router advertisments ourselves, tell the kernel to GTFO */ |
2039 | r = write_string_file(p, "0", WRITE_STRING_FILE_VERIFY_ON_FAILURE); | |
eb3da901 | 2040 | if (r < 0) |
fe307276 | 2041 | log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface: %m"); |
4f2e437a SS |
2042 | |
2043 | return 0; | |
2044 | } | |
2045 | ||
8749cbcd | 2046 | static int link_set_ipv6_dad_transmits(Link *link) { |
66a6bd68 | 2047 | char buf[DECIMAL_STR_MAX(int) + 1]; |
8749cbcd SS |
2048 | const char *p = NULL; |
2049 | int r; | |
2050 | ||
2051 | /* Make this a NOP if IPv6 is not available */ | |
2052 | if (!socket_ipv6_is_supported()) | |
2053 | return 0; | |
2054 | ||
2055 | if (link->flags & IFF_LOOPBACK) | |
2056 | return 0; | |
2057 | ||
d68e2e59 LP |
2058 | if (!link->network) |
2059 | return 0; | |
2060 | ||
8749cbcd SS |
2061 | if (link->network->ipv6_dad_transmits < 0) |
2062 | return 0; | |
2063 | ||
2064 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); | |
66a6bd68 | 2065 | xsprintf(buf, "%i", link->network->ipv6_dad_transmits); |
8749cbcd | 2066 | |
eb3da901 LP |
2067 | r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
2068 | if (r < 0) | |
8749cbcd | 2069 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); |
8749cbcd SS |
2070 | |
2071 | return 0; | |
2072 | } | |
2073 | ||
b69c3180 | 2074 | static int link_set_ipv6_hop_limit(Link *link) { |
66a6bd68 | 2075 | char buf[DECIMAL_STR_MAX(int) + 1]; |
b69c3180 SS |
2076 | const char *p = NULL; |
2077 | int r; | |
2078 | ||
2079 | /* Make this a NOP if IPv6 is not available */ | |
2080 | if (!socket_ipv6_is_supported()) | |
2081 | return 0; | |
2082 | ||
2083 | if (link->flags & IFF_LOOPBACK) | |
2084 | return 0; | |
2085 | ||
d68e2e59 LP |
2086 | if (!link->network) |
2087 | return 0; | |
2088 | ||
b69c3180 SS |
2089 | if (link->network->ipv6_hop_limit < 0) |
2090 | return 0; | |
2091 | ||
2092 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/hop_limit"); | |
66a6bd68 | 2093 | xsprintf(buf, "%i", link->network->ipv6_hop_limit); |
b69c3180 | 2094 | |
eb3da901 LP |
2095 | r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
2096 | if (r < 0) | |
b69c3180 | 2097 | log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m"); |
b69c3180 SS |
2098 | |
2099 | return 0; | |
2100 | } | |
2101 | ||
5e5b137a TG |
2102 | static int link_drop_foreign_config(Link *link) { |
2103 | Address *address; | |
2104 | Route *route; | |
2105 | Iterator i; | |
2106 | int r; | |
2107 | ||
2108 | SET_FOREACH(address, link->addresses_foreign, i) { | |
fe307276 | 2109 | /* we consider IPv6LL addresses to be managed by the kernel */ |
5e5b137a TG |
2110 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1) |
2111 | continue; | |
2112 | ||
2113 | r = address_remove(address, link, link_address_remove_handler); | |
2114 | if (r < 0) | |
2115 | return r; | |
2116 | } | |
2117 | ||
2118 | SET_FOREACH(route, link->routes_foreign, i) { | |
fe307276 | 2119 | /* do not touch routes managed by the kernel */ |
5e5b137a TG |
2120 | if (route->protocol == RTPROT_KERNEL) |
2121 | continue; | |
2122 | ||
2123 | r = route_remove(route, link, link_address_remove_handler); | |
2124 | if (r < 0) | |
2125 | return r; | |
2126 | } | |
2127 | ||
2128 | return 0; | |
2129 | } | |
2130 | ||
273eec24 LP |
2131 | static int link_update_lldp(Link *link) { |
2132 | int r; | |
2133 | ||
2134 | assert(link); | |
2135 | ||
2136 | if (!link->lldp) | |
2137 | return 0; | |
2138 | ||
2139 | if (link->flags & IFF_UP) { | |
2140 | r = sd_lldp_start(link->lldp); | |
2141 | if (r > 0) | |
2142 | log_link_debug(link, "Started LLDP."); | |
2143 | } else { | |
2144 | r = sd_lldp_stop(link->lldp); | |
2145 | if (r > 0) | |
2146 | log_link_debug(link, "Stopped LLDP."); | |
2147 | } | |
2148 | ||
2149 | return r; | |
2150 | } | |
2151 | ||
a748b692 | 2152 | static int link_configure(Link *link) { |
02b59d57 TG |
2153 | int r; |
2154 | ||
ef1ba606 | 2155 | assert(link); |
b22d8a00 | 2156 | assert(link->network); |
8434fd5c | 2157 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 2158 | |
02e28621 ДГ |
2159 | /* Drop foreign config, but ignore loopback or critical devices. |
2160 | * We do not want to remove loopback address or addresses used for root NFS. */ | |
2161 | if (!(link->flags & IFF_LOOPBACK) && !(link->network->dhcp_critical)) { | |
e5d44b34 CH |
2162 | r = link_drop_foreign_config(link); |
2163 | if (r < 0) | |
2164 | return r; | |
2165 | } | |
5e5b137a | 2166 | |
b98b483b AR |
2167 | r = link_set_bridge_fdb(link); |
2168 | if (r < 0) | |
2169 | return r; | |
2170 | ||
769d324c LP |
2171 | r = link_set_ipv4_forward(link); |
2172 | if (r < 0) | |
2173 | return r; | |
2174 | ||
2175 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
2176 | if (r < 0) |
2177 | return r; | |
2178 | ||
49092e22 SS |
2179 | r = link_set_ipv6_privacy_extensions(link); |
2180 | if (r < 0) | |
2181 | return r; | |
2182 | ||
4f2e437a SS |
2183 | r = link_set_ipv6_accept_ra(link); |
2184 | if (r < 0) | |
2185 | return r; | |
2186 | ||
8749cbcd SS |
2187 | r = link_set_ipv6_dad_transmits(link); |
2188 | if (r < 0) | |
2189 | return r; | |
b69c3180 SS |
2190 | |
2191 | r = link_set_ipv6_hop_limit(link); | |
2192 | if (r < 0) | |
2193 | return r; | |
8749cbcd | 2194 | |
78c958f8 | 2195 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 2196 | r = ipv4ll_configure(link); |
eb34d4af TG |
2197 | if (r < 0) |
2198 | return r; | |
2199 | } | |
2200 | ||
78c958f8 | 2201 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 2202 | r = dhcp4_configure(link); |
eb34d4af TG |
2203 | if (r < 0) |
2204 | return r; | |
eb34d4af TG |
2205 | } |
2206 | ||
78c958f8 | 2207 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
2208 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
2209 | if (r < 0) | |
2210 | return r; | |
2211 | ||
2212 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
2213 | if (r < 0) | |
2214 | return r; | |
dd43110f TG |
2215 | } |
2216 | ||
62379e88 TG |
2217 | if (link_dhcp6_enabled(link) || |
2218 | link_ipv6_accept_ra_enabled(link)) { | |
f5a8c43f TG |
2219 | r = dhcp6_configure(link); |
2220 | if (r < 0) | |
2221 | return r; | |
2222 | } | |
2223 | ||
2224 | if (link_ipv6_accept_ra_enabled(link)) { | |
de1e9928 | 2225 | r = ndisc_configure(link); |
4138fb2c PF |
2226 | if (r < 0) |
2227 | return r; | |
2228 | } | |
2229 | ||
8e1ad1ea | 2230 | if (link_lldp_rx_enabled(link)) { |
34437b4f LP |
2231 | r = sd_lldp_new(&link->lldp, link->ifindex); |
2232 | if (r < 0) | |
2233 | return r; | |
2234 | ||
2235 | r = sd_lldp_match_capabilities(link->lldp, | |
2236 | link->network->lldp_mode == LLDP_MODE_ROUTERS_ONLY ? | |
2237 | _LLDP_SYSTEM_CAPABILITIES_ALL_ROUTERS : | |
2238 | _LLDP_SYSTEM_CAPABILITIES_ALL); | |
ce43e484 SS |
2239 | if (r < 0) |
2240 | return r; | |
2241 | ||
b553a6b1 LP |
2242 | r = sd_lldp_set_filter_address(link->lldp, &link->mac); |
2243 | if (r < 0) | |
2244 | return r; | |
2245 | ||
ce43e484 SS |
2246 | r = sd_lldp_attach_event(link->lldp, NULL, 0); |
2247 | if (r < 0) | |
2248 | return r; | |
49699bac | 2249 | |
032b27f5 | 2250 | r = sd_lldp_set_callback(link->lldp, lldp_handler, link); |
49699bac SS |
2251 | if (r < 0) |
2252 | return r; | |
273eec24 LP |
2253 | |
2254 | r = link_update_lldp(link); | |
2255 | if (r < 0) | |
2256 | return r; | |
ce43e484 SS |
2257 | } |
2258 | ||
a61bb41c | 2259 | if (link_has_carrier(link)) { |
1e9be60b TG |
2260 | r = link_acquire_conf(link); |
2261 | if (r < 0) | |
2262 | return r; | |
e7ab854c | 2263 | |
c601ebf7 | 2264 | if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) == 0) { |
e7ab854c TG |
2265 | r = link_acquire_ipv6_conf(link); |
2266 | if (r < 0) | |
2267 | return r; | |
2268 | } | |
cc544d5f | 2269 | } |
1e9be60b | 2270 | |
3f265037 | 2271 | return link_enter_join_netdev(link); |
505f8da7 TG |
2272 | } |
2273 | ||
1c4baffc | 2274 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 2275 | void *userdata) { |
5da8149f | 2276 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 2277 | Network *network; |
505f8da7 TG |
2278 | int r; |
2279 | ||
2280 | assert(link); | |
2281 | assert(link->ifname); | |
2282 | assert(link->manager); | |
2283 | ||
8434fd5c | 2284 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 2285 | return 1; |
505f8da7 | 2286 | |
6a7a4e4d | 2287 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 2288 | |
0d4ad91d AR |
2289 | r = link_new_bound_by_list(link); |
2290 | if (r < 0) | |
2291 | return r; | |
2292 | ||
2293 | r = link_handle_bound_by_list(link); | |
2294 | if (r < 0) | |
2295 | return r; | |
2296 | ||
c4a03a56 TG |
2297 | if (!link->network) { |
2298 | r = network_get(link->manager, link->udev_device, link->ifname, | |
2299 | &link->mac, &network); | |
2300 | if (r == -ENOENT) { | |
2301 | link_enter_unmanaged(link); | |
2302 | return 1; | |
2303 | } else if (r < 0) | |
2304 | return r; | |
505f8da7 | 2305 | |
c4a03a56 TG |
2306 | if (link->flags & IFF_LOOPBACK) { |
2307 | if (network->link_local != ADDRESS_FAMILY_NO) | |
2308 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 2309 | |
c4a03a56 TG |
2310 | if (network->dhcp != ADDRESS_FAMILY_NO) |
2311 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 2312 | |
c4a03a56 TG |
2313 | if (network->dhcp_server) |
2314 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
2315 | } | |
bd2efe92 | 2316 | |
c4a03a56 TG |
2317 | r = network_apply(link->manager, network, link); |
2318 | if (r < 0) | |
2319 | return r; | |
2320 | } | |
505f8da7 | 2321 | |
0d4ad91d AR |
2322 | r = link_new_bound_to_list(link); |
2323 | if (r < 0) | |
2324 | return r; | |
2325 | ||
a748b692 TG |
2326 | r = link_configure(link); |
2327 | if (r < 0) | |
2328 | return r; | |
2329 | ||
5da8149f | 2330 | return 1; |
505f8da7 TG |
2331 | } |
2332 | ||
4f561e8e | 2333 | int link_initialized(Link *link, struct udev_device *device) { |
4afd3348 | 2334 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f561e8e TG |
2335 | int r; |
2336 | ||
2337 | assert(link); | |
2338 | assert(link->manager); | |
2339 | assert(link->manager->rtnl); | |
2340 | assert(device); | |
2341 | ||
8434fd5c | 2342 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2343 | return 0; |
2344 | ||
679b3605 TG |
2345 | if (link->udev_device) |
2346 | return 0; | |
2347 | ||
79008bdd | 2348 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
2349 | |
2350 | link->udev_device = udev_device_ref(device); | |
2351 | ||
3c9b8860 TG |
2352 | /* udev has initialized the link, but we don't know if we have yet |
2353 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2354 | * when it returns we know that the pending NEWLINKs have already been | |
2355 | * processed and that we are up-to-date */ | |
4f561e8e | 2356 | |
3c9b8860 TG |
2357 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2358 | link->ifindex); | |
4f561e8e TG |
2359 | if (r < 0) |
2360 | return r; | |
2361 | ||
1c4baffc | 2362 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 2363 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
2364 | if (r < 0) |
2365 | return r; | |
2366 | ||
5da8149f TG |
2367 | link_ref(link); |
2368 | ||
4f561e8e TG |
2369 | return 0; |
2370 | } | |
2371 | ||
c4a03a56 | 2372 | static int link_load(Link *link) { |
0bc70f1d TG |
2373 | _cleanup_free_ char *network_file = NULL, |
2374 | *addresses = NULL, | |
f703cc2c | 2375 | *routes = NULL, |
0bc70f1d TG |
2376 | *dhcp4_address = NULL, |
2377 | *ipv4ll_address = NULL; | |
2378 | union in_addr_union address; | |
f703cc2c | 2379 | union in_addr_union route_dst; |
c598ac76 | 2380 | const char *p; |
c4a03a56 TG |
2381 | int r; |
2382 | ||
2383 | assert(link); | |
2384 | ||
2385 | r = parse_env_file(link->state_file, NEWLINE, | |
2386 | "NETWORK_FILE", &network_file, | |
2387 | "ADDRESSES", &addresses, | |
f703cc2c | 2388 | "ROUTES", &routes, |
0bc70f1d TG |
2389 | "DHCP4_ADDRESS", &dhcp4_address, |
2390 | "IPV4LL_ADDRESS", &ipv4ll_address, | |
c4a03a56 TG |
2391 | NULL); |
2392 | if (r < 0 && r != -ENOENT) | |
2393 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
2394 | ||
2395 | if (network_file) { | |
2396 | Network *network; | |
2397 | char *suffix; | |
2398 | ||
2399 | /* drop suffix */ | |
2400 | suffix = strrchr(network_file, '.'); | |
2401 | if (!suffix) { | |
2402 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
2403 | goto network_file_fail; | |
2404 | } | |
2405 | *suffix = '\0'; | |
2406 | ||
2407 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
2408 | if (r < 0) { | |
2409 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
2410 | goto network_file_fail; | |
2411 | } | |
2412 | ||
2413 | r = network_apply(link->manager, network, link); | |
2414 | if (r < 0) | |
2415 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
2416 | } | |
2417 | ||
2418 | network_file_fail: | |
2419 | ||
2420 | if (addresses) { | |
c598ac76 | 2421 | p = addresses; |
c4a03a56 | 2422 | |
c598ac76 TG |
2423 | for (;;) { |
2424 | _cleanup_free_ char *address_str = NULL; | |
c4a03a56 TG |
2425 | char *prefixlen_str; |
2426 | int family; | |
2427 | unsigned char prefixlen; | |
c4a03a56 | 2428 | |
c598ac76 TG |
2429 | r = extract_first_word(&p, &address_str, NULL, 0); |
2430 | if (r < 0) { | |
2431 | log_link_debug_errno(link, r, "Failed to extract next address string: %m"); | |
2432 | continue; | |
928bc597 TA |
2433 | } |
2434 | if (r == 0) | |
c598ac76 TG |
2435 | break; |
2436 | ||
2437 | prefixlen_str = strchr(address_str, '/'); | |
c4a03a56 | 2438 | if (!prefixlen_str) { |
c598ac76 | 2439 | log_link_debug(link, "Failed to parse address and prefix length %s", address_str); |
c4a03a56 TG |
2440 | continue; |
2441 | } | |
2442 | ||
313cefa1 | 2443 | *prefixlen_str++ = '\0'; |
c4a03a56 TG |
2444 | |
2445 | r = sscanf(prefixlen_str, "%hhu", &prefixlen); | |
2446 | if (r != 1) { | |
2447 | log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str); | |
2448 | continue; | |
2449 | } | |
2450 | ||
c598ac76 | 2451 | r = in_addr_from_string_auto(address_str, &family, &address); |
c4a03a56 | 2452 | if (r < 0) { |
c598ac76 | 2453 | log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str); |
c4a03a56 TG |
2454 | continue; |
2455 | } | |
2456 | ||
2457 | r = address_add(link, family, &address, prefixlen, NULL); | |
2458 | if (r < 0) | |
2459 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
2460 | } | |
2461 | } | |
2462 | ||
f703cc2c | 2463 | if (routes) { |
74544b4e TA |
2464 | p = routes; |
2465 | ||
c598ac76 | 2466 | for (;;) { |
f833694d | 2467 | Route *route; |
c598ac76 | 2468 | _cleanup_free_ char *route_str = NULL; |
4afd3348 | 2469 | _cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL; |
f833694d | 2470 | usec_t lifetime; |
f703cc2c TG |
2471 | char *prefixlen_str; |
2472 | int family; | |
2473 | unsigned char prefixlen, tos, table; | |
2474 | uint32_t priority; | |
2475 | ||
c598ac76 TG |
2476 | r = extract_first_word(&p, &route_str, NULL, 0); |
2477 | if (r < 0) { | |
2478 | log_link_debug_errno(link, r, "Failed to extract next route string: %m"); | |
2479 | continue; | |
928bc597 TA |
2480 | } |
2481 | if (r == 0) | |
c598ac76 TG |
2482 | break; |
2483 | ||
2484 | prefixlen_str = strchr(route_str, '/'); | |
f703cc2c | 2485 | if (!prefixlen_str) { |
c598ac76 | 2486 | log_link_debug(link, "Failed to parse route %s", route_str); |
f703cc2c TG |
2487 | continue; |
2488 | } | |
2489 | ||
313cefa1 | 2490 | *prefixlen_str++ = '\0'; |
f703cc2c | 2491 | |
f833694d TG |
2492 | r = sscanf(prefixlen_str, "%hhu/%hhu/%"SCNu32"/%hhu/"USEC_FMT, &prefixlen, &tos, &priority, &table, &lifetime); |
2493 | if (r != 5) { | |
2494 | log_link_debug(link, | |
2495 | "Failed to parse destination prefix length, tos, priority, table or expiration %s", | |
2496 | prefixlen_str); | |
f703cc2c TG |
2497 | continue; |
2498 | } | |
2499 | ||
c598ac76 | 2500 | r = in_addr_from_string_auto(route_str, &family, &route_dst); |
f703cc2c | 2501 | if (r < 0) { |
c598ac76 | 2502 | log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str); |
f703cc2c TG |
2503 | continue; |
2504 | } | |
2505 | ||
f833694d | 2506 | r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route); |
f703cc2c TG |
2507 | if (r < 0) |
2508 | return log_link_error_errno(link, r, "Failed to add route: %m"); | |
f833694d TG |
2509 | |
2510 | if (lifetime != USEC_INFINITY) { | |
2511 | r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), lifetime, | |
2512 | 0, route_expire_handler, route); | |
2513 | if (r < 0) | |
2514 | log_link_warning_errno(link, r, "Could not arm route expiration handler: %m"); | |
2515 | } | |
2516 | ||
2517 | route->lifetime = lifetime; | |
2518 | sd_event_source_unref(route->expire); | |
2519 | route->expire = expire; | |
2520 | expire = NULL; | |
f703cc2c TG |
2521 | } |
2522 | } | |
2523 | ||
0bc70f1d TG |
2524 | if (dhcp4_address) { |
2525 | r = in_addr_from_string(AF_INET, dhcp4_address, &address); | |
2526 | if (r < 0) { | |
2527 | log_link_debug_errno(link, r, "Falied to parse DHCPv4 address %s: %m", dhcp4_address); | |
2528 | goto dhcp4_address_fail; | |
2529 | } | |
2530 | ||
2531 | r = sd_dhcp_client_new(&link->dhcp_client); | |
2532 | if (r < 0) | |
2533 | return log_link_error_errno(link, r, "Falied to create DHCPv4 client: %m"); | |
2534 | ||
2535 | r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in); | |
2536 | if (r < 0) | |
2537 | return log_link_error_errno(link, r, "Falied to set inital DHCPv4 address %s: %m", dhcp4_address); | |
2538 | } | |
2539 | ||
2540 | dhcp4_address_fail: | |
2541 | ||
2542 | if (ipv4ll_address) { | |
2543 | r = in_addr_from_string(AF_INET, ipv4ll_address, &address); | |
2544 | if (r < 0) { | |
2545 | log_link_debug_errno(link, r, "Falied to parse IPv4LL address %s: %m", ipv4ll_address); | |
2546 | goto ipv4ll_address_fail; | |
2547 | } | |
2548 | ||
2549 | r = sd_ipv4ll_new(&link->ipv4ll); | |
2550 | if (r < 0) | |
2551 | return log_link_error_errno(link, r, "Falied to create IPv4LL client: %m"); | |
2552 | ||
2553 | r = sd_ipv4ll_set_address(link->ipv4ll, &address.in); | |
2554 | if (r < 0) | |
2555 | return log_link_error_errno(link, r, "Falied to set inital IPv4LL address %s: %m", ipv4ll_address); | |
2556 | } | |
2557 | ||
2558 | ipv4ll_address_fail: | |
2559 | ||
c4a03a56 TG |
2560 | return 0; |
2561 | } | |
2562 | ||
1c4baffc | 2563 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
2564 | Link *link; |
2565 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
2566 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
2567 | int r; | |
2568 | ||
2569 | assert(m); | |
fbbeb65a | 2570 | assert(m->rtnl); |
505f8da7 TG |
2571 | assert(message); |
2572 | assert(ret); | |
2573 | ||
2574 | r = link_new(m, message, ret); | |
2575 | if (r < 0) | |
2576 | return r; | |
2577 | ||
2578 | link = *ret; | |
2579 | ||
6a7a4e4d | 2580 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2581 | |
c4a03a56 TG |
2582 | r = link_load(link); |
2583 | if (r < 0) | |
2584 | return r; | |
2585 | ||
75f86906 | 2586 | if (detect_container() <= 0) { |
505f8da7 | 2587 | /* not in a container, udev will be around */ |
ae06ab10 | 2588 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 2589 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
5c416fc4 TG |
2590 | if (!device) { |
2591 | r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
2592 | goto failed; | |
2593 | } | |
505f8da7 | 2594 | |
3c4cb064 | 2595 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 2596 | /* not yet ready */ |
79008bdd | 2597 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2598 | return 0; |
3c4cb064 | 2599 | } |
505f8da7 | 2600 | |
4f561e8e TG |
2601 | r = link_initialized(link, device); |
2602 | if (r < 0) | |
5c416fc4 | 2603 | goto failed; |
4f561e8e | 2604 | } else { |
5da8149f TG |
2605 | /* we are calling a callback directly, so must take a ref */ |
2606 | link_ref(link); | |
2607 | ||
4f561e8e TG |
2608 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
2609 | if (r < 0) | |
5c416fc4 | 2610 | goto failed; |
4f561e8e | 2611 | } |
505f8da7 | 2612 | |
a748b692 | 2613 | return 0; |
5c416fc4 TG |
2614 | failed: |
2615 | link_enter_failed(link); | |
2616 | return r; | |
a748b692 TG |
2617 | } |
2618 | ||
c601ebf7 | 2619 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
e7ab854c TG |
2620 | int r; |
2621 | ||
2622 | assert(link); | |
2623 | ||
2624 | log_link_info(link, "Gained IPv6LL"); | |
2625 | ||
c601ebf7 | 2626 | link->ipv6ll_address = *address; |
e7ab854c TG |
2627 | link_check_ready(link); |
2628 | ||
201f0c91 | 2629 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_UNMANAGED, LINK_STATE_FAILED)) { |
e7ab854c TG |
2630 | r = link_acquire_ipv6_conf(link); |
2631 | if (r < 0) { | |
2632 | link_enter_failed(link); | |
2633 | return r; | |
2634 | } | |
2635 | } | |
2636 | ||
2637 | return 0; | |
2638 | } | |
2639 | ||
9c0a72f9 TG |
2640 | static int link_carrier_gained(Link *link) { |
2641 | int r; | |
2642 | ||
2643 | assert(link); | |
2644 | ||
201f0c91 | 2645 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_UNMANAGED, LINK_STATE_FAILED)) { |
9c0a72f9 TG |
2646 | r = link_acquire_conf(link); |
2647 | if (r < 0) { | |
2648 | link_enter_failed(link); | |
2649 | return r; | |
2650 | } | |
2651 | } | |
2652 | ||
0d4ad91d AR |
2653 | r = link_handle_bound_by_list(link); |
2654 | if (r < 0) | |
2655 | return r; | |
2656 | ||
9c0a72f9 TG |
2657 | return 0; |
2658 | } | |
2659 | ||
2660 | static int link_carrier_lost(Link *link) { | |
2661 | int r; | |
2662 | ||
2663 | assert(link); | |
2664 | ||
2665 | r = link_stop_clients(link); | |
2666 | if (r < 0) { | |
2667 | link_enter_failed(link); | |
2668 | return r; | |
2669 | } | |
2670 | ||
0d4ad91d AR |
2671 | r = link_handle_bound_by_list(link); |
2672 | if (r < 0) | |
2673 | return r; | |
2674 | ||
9c0a72f9 TG |
2675 | return 0; |
2676 | } | |
2677 | ||
2678 | int link_carrier_reset(Link *link) { | |
2679 | int r; | |
2680 | ||
2681 | assert(link); | |
2682 | ||
2683 | if (link_has_carrier(link)) { | |
2684 | r = link_carrier_lost(link); | |
2685 | if (r < 0) | |
2686 | return r; | |
2687 | ||
2688 | r = link_carrier_gained(link); | |
2689 | if (r < 0) | |
2690 | return r; | |
2691 | ||
6a7a4e4d | 2692 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2693 | } |
2694 | ||
2695 | return 0; | |
2696 | } | |
2697 | ||
1c4baffc | 2698 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 2699 | struct ether_addr mac; |
ca4e095a | 2700 | const char *ifname; |
afe7fd56 | 2701 | uint32_t mtu; |
a61bb41c | 2702 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
2703 | int r; |
2704 | ||
dd3efc09 | 2705 | assert(link); |
b8941f74 | 2706 | assert(link->ifname); |
22936833 TG |
2707 | assert(m); |
2708 | ||
7619683b TG |
2709 | if (link->state == LINK_STATE_LINGER) { |
2710 | link_ref(link); | |
6a7a4e4d | 2711 | log_link_info(link, "Link readded"); |
e331e246 | 2712 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
2713 | |
2714 | r = link_new_carrier_maps(link); | |
2715 | if (r < 0) | |
2716 | return r; | |
7619683b TG |
2717 | } |
2718 | ||
1c4baffc | 2719 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2720 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 2721 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 2722 | |
0d4ad91d AR |
2723 | link_free_carrier_maps(link); |
2724 | ||
2fc09a9c DM |
2725 | r = free_and_strdup(&link->ifname, ifname); |
2726 | if (r < 0) | |
2727 | return r; | |
0d4ad91d AR |
2728 | |
2729 | r = link_new_carrier_maps(link); | |
2730 | if (r < 0) | |
2731 | return r; | |
b8941f74 TG |
2732 | } |
2733 | ||
1c4baffc | 2734 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2735 | if (r >= 0 && mtu > 0) { |
2736 | link->mtu = mtu; | |
2737 | if (!link->original_mtu) { | |
2738 | link->original_mtu = mtu; | |
6a7a4e4d | 2739 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2740 | } |
2741 | ||
2742 | if (link->dhcp_client) { | |
3c9b8860 TG |
2743 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2744 | link->mtu); | |
afe7fd56 | 2745 | if (r < 0) { |
6a7a4e4d | 2746 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
2747 | return r; |
2748 | } | |
2749 | } | |
9842de0d | 2750 | } |
69629de9 | 2751 | |
e9189a1f TG |
2752 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2753 | set, simply ignore them. */ | |
1c4baffc | 2754 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2755 | if (r >= 0) { |
3c9b8860 TG |
2756 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2757 | ETH_ALEN)) { | |
c49b33ac | 2758 | |
3c9b8860 TG |
2759 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2760 | ETH_ALEN); | |
c49b33ac | 2761 | |
79008bdd | 2762 | log_link_debug(link, "MAC address: " |
20861203 TG |
2763 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
2764 | mac.ether_addr_octet[0], | |
2765 | mac.ether_addr_octet[1], | |
2766 | mac.ether_addr_octet[2], | |
2767 | mac.ether_addr_octet[3], | |
2768 | mac.ether_addr_octet[4], | |
2769 | mac.ether_addr_octet[5]); | |
c49b33ac | 2770 | |
20861203 TG |
2771 | if (link->ipv4ll) { |
2772 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
2773 | if (r < 0) |
2774 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 2775 | } |
c49b33ac | 2776 | |
20861203 | 2777 | if (link->dhcp_client) { |
3c9b8860 | 2778 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
2779 | (const uint8_t *) &link->mac, |
2780 | sizeof (link->mac), | |
2781 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2782 | if (r < 0) |
2783 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
c49b33ac | 2784 | } |
4138fb2c PF |
2785 | |
2786 | if (link->dhcp6_client) { | |
2787 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
2788 | (const uint8_t *) &link->mac, |
2789 | sizeof (link->mac), | |
2790 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2791 | if (r < 0) |
2792 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
4138fb2c | 2793 | } |
c49b33ac | 2794 | } |
4f882b2a TG |
2795 | } |
2796 | ||
a61bb41c TG |
2797 | had_carrier = link_has_carrier(link); |
2798 | ||
2799 | r = link_update_flags(link, m); | |
2800 | if (r < 0) | |
2801 | return r; | |
2802 | ||
273eec24 LP |
2803 | r = link_update_lldp(link); |
2804 | if (r < 0) | |
2805 | return r; | |
2806 | ||
a61bb41c TG |
2807 | carrier_gained = !had_carrier && link_has_carrier(link); |
2808 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2809 | ||
2810 | if (carrier_gained) { | |
6a7a4e4d | 2811 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2812 | |
9c0a72f9 TG |
2813 | r = link_carrier_gained(link); |
2814 | if (r < 0) | |
2815 | return r; | |
a61bb41c | 2816 | } else if (carrier_lost) { |
6a7a4e4d | 2817 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2818 | |
9c0a72f9 TG |
2819 | r = link_carrier_lost(link); |
2820 | if (r < 0) | |
a61bb41c | 2821 | return r; |
a61bb41c TG |
2822 | } |
2823 | ||
2824 | return 0; | |
dd3efc09 | 2825 | } |
fe8db0c5 | 2826 | |
b295beea LP |
2827 | static void print_link_hashmap(FILE *f, const char *prefix, Hashmap* h) { |
2828 | bool space = false; | |
2829 | Iterator i; | |
2830 | Link *link; | |
2831 | ||
2832 | assert(f); | |
2833 | assert(prefix); | |
2834 | ||
2835 | if (hashmap_isempty(h)) | |
2836 | return; | |
2837 | ||
2838 | fputs(prefix, f); | |
2839 | HASHMAP_FOREACH(link, h, i) { | |
2840 | if (space) | |
2841 | fputc(' ', f); | |
2842 | ||
2843 | fprintf(f, "%i", link->ifindex); | |
2844 | space = true; | |
2845 | } | |
2846 | ||
2847 | fputc('\n', f); | |
2848 | } | |
2849 | ||
fe8db0c5 | 2850 | int link_save(Link *link) { |
68a8723c | 2851 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2852 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2853 | const char *admin_state, *oper_state; |
e7780c8d | 2854 | Address *a; |
c1eb9872 | 2855 | Route *route; |
e7780c8d | 2856 | Iterator i; |
fe8db0c5 TG |
2857 | int r; |
2858 | ||
2859 | assert(link); | |
2860 | assert(link->state_file); | |
68a8723c | 2861 | assert(link->lease_file); |
bbf7c048 TG |
2862 | assert(link->manager); |
2863 | ||
370e9930 TG |
2864 | if (link->state == LINK_STATE_LINGER) { |
2865 | unlink(link->state_file); | |
2866 | return 0; | |
2867 | } | |
2868 | ||
34437b4f LP |
2869 | link_lldp_save(link); |
2870 | ||
deb2e523 TG |
2871 | admin_state = link_state_to_string(link->state); |
2872 | assert(admin_state); | |
2873 | ||
e375dcde TG |
2874 | oper_state = link_operstate_to_string(link->operstate); |
2875 | assert(oper_state); | |
deb2e523 | 2876 | |
fe8db0c5 TG |
2877 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2878 | if (r < 0) | |
6a7a4e4d | 2879 | goto fail; |
fe8db0c5 TG |
2880 | |
2881 | fchmod(fileno(f), 0644); | |
2882 | ||
2883 | fprintf(f, | |
2884 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2885 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
2886 | "OPER_STATE=%s\n", |
2887 | admin_state, oper_state); | |
fe8db0c5 | 2888 | |
bcb7a07e | 2889 | if (link->network) { |
ea352b40 | 2890 | bool space; |
07bdc70d | 2891 | sd_dhcp6_lease *dhcp6_lease = NULL; |
b2a81c0b LP |
2892 | const char *dhcp_domainname = NULL; |
2893 | char **dhcp6_domains = NULL; | |
07bdc70d PF |
2894 | |
2895 | if (link->dhcp6_client) { | |
4058d339 TG |
2896 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, &dhcp6_lease); |
2897 | if (r < 0 && r != -ENOMSG) | |
07bdc70d PF |
2898 | log_link_debug(link, "No DHCPv6 lease"); |
2899 | } | |
b0e39c82 | 2900 | |
adc5b2e2 TG |
2901 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2902 | ||
b0e39c82 | 2903 | fputs("DNS=", f); |
ea352b40 | 2904 | space = false; |
3df9bec5 | 2905 | fputstrv(f, link->network->dns, NULL, &space); |
d5314fff | 2906 | |
27cb34f5 | 2907 | if (link->network->dhcp_use_dns && |
b0e39c82 TG |
2908 | link->dhcp_lease) { |
2909 | const struct in_addr *addresses; | |
2910 | ||
2911 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
2912 | if (r > 0) { | |
ea352b40 LP |
2913 | if (space) |
2914 | fputc(' ', f); | |
b0e39c82 | 2915 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2916 | space = true; |
2917 | } | |
2918 | } | |
2919 | ||
27cb34f5 | 2920 | if (link->network->dhcp_use_dns && dhcp6_lease) { |
07bdc70d PF |
2921 | struct in6_addr *in6_addrs; |
2922 | ||
2923 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
2924 | if (r > 0) { | |
2925 | if (space) | |
2926 | fputc(' ', f); | |
2927 | serialize_in6_addrs(f, in6_addrs, r); | |
b0e39c82 TG |
2928 | } |
2929 | } | |
2930 | ||
2ce40956 | 2931 | fputc('\n', f); |
b0e39c82 | 2932 | |
2ce40956 | 2933 | fputs("NTP=", f); |
ea352b40 | 2934 | space = false; |
3df9bec5 | 2935 | fputstrv(f, link->network->ntp, NULL, &space); |
d5314fff | 2936 | |
27cb34f5 | 2937 | if (link->network->dhcp_use_ntp && |
b0e39c82 TG |
2938 | link->dhcp_lease) { |
2939 | const struct in_addr *addresses; | |
2940 | ||
2941 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
2942 | if (r > 0) { | |
ea352b40 LP |
2943 | if (space) |
2944 | fputc(' ', f); | |
b0e39c82 | 2945 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2946 | space = true; |
2947 | } | |
2948 | } | |
2949 | ||
27cb34f5 | 2950 | if (link->network->dhcp_use_ntp && dhcp6_lease) { |
07bdc70d PF |
2951 | struct in6_addr *in6_addrs; |
2952 | char **hosts; | |
07bdc70d PF |
2953 | |
2954 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
2955 | &in6_addrs); | |
2956 | if (r > 0) { | |
2957 | if (space) | |
2958 | fputc(' ', f); | |
2959 | serialize_in6_addrs(f, in6_addrs, r); | |
2960 | space = true; | |
2961 | } | |
2962 | ||
2963 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
3df9bec5 LP |
2964 | if (r > 0) |
2965 | fputstrv(f, hosts, NULL, &space); | |
b0e39c82 TG |
2966 | } |
2967 | ||
2ce40956 | 2968 | fputc('\n', f); |
bd8f6538 | 2969 | |
b2a81c0b LP |
2970 | if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
2971 | if (link->dhcp_lease) | |
2972 | (void) sd_dhcp_lease_get_domainname(link->dhcp_lease, &dhcp_domainname); | |
9b4d1882 | 2973 | |
b2a81c0b LP |
2974 | if (dhcp6_lease) |
2975 | (void) sd_dhcp6_lease_get_domains(dhcp6_lease, &dhcp6_domains); | |
07bdc70d PF |
2976 | } |
2977 | ||
b2a81c0b LP |
2978 | fputs("DOMAINS=", f); |
2979 | fputstrv(f, link->network->search_domains, NULL, &space); | |
07bdc70d | 2980 | |
d390f8ef LP |
2981 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES && dhcp_domainname) |
2982 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
9b4d1882 | 2983 | |
b2a81c0b LP |
2984 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES && dhcp6_domains) |
2985 | fputstrv(f, dhcp6_domains, NULL, &space); | |
2986 | ||
2ce40956 | 2987 | fputc('\n', f); |
6192b846 | 2988 | |
3df9bec5 LP |
2989 | fputs("ROUTE_DOMAINS=", f); |
2990 | fputstrv(f, link->network->route_domains, NULL, NULL); | |
b2a81c0b | 2991 | |
d390f8ef LP |
2992 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE && dhcp_domainname) |
2993 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b2a81c0b LP |
2994 | |
2995 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE && dhcp6_domains) | |
2996 | fputstrv(f, dhcp6_domains, NULL, &space); | |
2997 | ||
3df9bec5 | 2998 | fputc('\n', f); |
67272d15 | 2999 | |
3c9b8860 | 3000 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 3001 | resolve_support_to_string(link->network->llmnr)); |
aaa297d4 LP |
3002 | fprintf(f, "MDNS=%s\n", |
3003 | resolve_support_to_string(link->network->mdns)); | |
e7780c8d | 3004 | |
ad6c0475 LP |
3005 | if (link->network->dnssec_mode != _DNSSEC_MODE_INVALID) |
3006 | fprintf(f, "DNSSEC=%s\n", | |
3007 | dnssec_mode_to_string(link->network->dnssec_mode)); | |
3008 | ||
8a516214 LP |
3009 | if (!set_isempty(link->network->dnssec_negative_trust_anchors)) { |
3010 | const char *n; | |
3011 | ||
3012 | fputs("DNSSEC_NTA=", f); | |
3013 | space = false; | |
d390f8ef LP |
3014 | SET_FOREACH(n, link->network->dnssec_negative_trust_anchors, i) |
3015 | fputs_with_space(f, n, NULL, &space); | |
8a516214 LP |
3016 | fputc('\n', f); |
3017 | } | |
3018 | ||
2ce40956 | 3019 | fputs("ADDRESSES=", f); |
e7780c8d TG |
3020 | space = false; |
3021 | SET_FOREACH(a, link->addresses, i) { | |
3022 | _cleanup_free_ char *address_str = NULL; | |
3023 | ||
3024 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
3025 | if (r < 0) | |
3026 | goto fail; | |
3027 | ||
e7780c8d TG |
3028 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
3029 | space = true; | |
3030 | } | |
2ce40956 | 3031 | fputc('\n', f); |
c1eb9872 TG |
3032 | |
3033 | fputs("ROUTES=", f); | |
3034 | space = false; | |
3035 | SET_FOREACH(route, link->routes, i) { | |
3036 | _cleanup_free_ char *route_str = NULL; | |
3037 | ||
3038 | r = in_addr_to_string(route->family, &route->dst, &route_str); | |
3039 | if (r < 0) | |
3040 | goto fail; | |
3041 | ||
f833694d TG |
3042 | fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%hhu/"USEC_FMT, space ? " " : "", route_str, |
3043 | route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime); | |
c1eb9872 TG |
3044 | space = true; |
3045 | } | |
3046 | ||
3047 | fputc('\n', f); | |
bcb7a07e | 3048 | } |
7374f9d8 | 3049 | |
b295beea LP |
3050 | print_link_hashmap(f, "CARRIER_BOUND_TO=", link->bound_to_links); |
3051 | print_link_hashmap(f, "CARRIER_BOUND_BY=", link->bound_by_links); | |
0d4ad91d | 3052 | |
8eb9058d | 3053 | if (link->dhcp_lease) { |
0bc70f1d | 3054 | struct in_addr address; |
8eb9058d LP |
3055 | const char *tz = NULL; |
3056 | ||
0bc70f1d TG |
3057 | assert(link->network); |
3058 | ||
8eb9058d LP |
3059 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); |
3060 | if (r >= 0) | |
3061 | fprintf(f, "TIMEZONE=%s\n", tz); | |
8eb9058d | 3062 | |
0bc70f1d TG |
3063 | r = sd_dhcp_lease_get_address(link->dhcp_lease, &address); |
3064 | if (r >= 0) { | |
3065 | fputs("DHCP4_ADDRESS=", f); | |
3066 | serialize_in_addrs(f, &address, 1); | |
3067 | fputc('\n', f); | |
3068 | } | |
d9876a52 | 3069 | |
bd91b83e | 3070 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 3071 | if (r < 0) |
c2d6bd61 | 3072 | goto fail; |
fe8db0c5 | 3073 | |
7374f9d8 | 3074 | fprintf(f, |
b0e39c82 TG |
3075 | "DHCP_LEASE=%s\n", |
3076 | link->lease_file); | |
deb2e523 | 3077 | } else |
68a8723c | 3078 | unlink(link->lease_file); |
fe8db0c5 | 3079 | |
0bc70f1d TG |
3080 | if (link->ipv4ll) { |
3081 | struct in_addr address; | |
3082 | ||
3083 | r = sd_ipv4ll_get_address(link->ipv4ll, &address); | |
3084 | if (r >= 0) { | |
3085 | fputs("IPV4LL_ADDRESS=", f); | |
3086 | serialize_in_addrs(f, &address, 1); | |
3087 | fputc('\n', f); | |
3088 | } | |
3089 | } | |
3090 | ||
c2d6bd61 LP |
3091 | r = fflush_and_check(f); |
3092 | if (r < 0) | |
3093 | goto fail; | |
fe8db0c5 | 3094 | |
c2d6bd61 | 3095 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 3096 | r = -errno; |
c2d6bd61 | 3097 | goto fail; |
fe8db0c5 TG |
3098 | } |
3099 | ||
c2d6bd61 | 3100 | return 0; |
dacd6cee | 3101 | |
c2d6bd61 | 3102 | fail: |
6a7a4e4d | 3103 | (void) unlink(link->state_file); |
6a7a4e4d LP |
3104 | if (temp_path) |
3105 | (void) unlink(temp_path); | |
3106 | ||
dacd6cee | 3107 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
3108 | } |
3109 | ||
84de38c5 TG |
3110 | /* The serialized state in /run is no longer up-to-date. */ |
3111 | void link_dirty(Link *link) { | |
3112 | int r; | |
3113 | ||
3114 | assert(link); | |
3115 | ||
3116 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); | |
3117 | if (r < 0) | |
3118 | /* allocation errors are ignored */ | |
3119 | return; | |
3120 | ||
3121 | r = set_put(link->manager->dirty_links, link); | |
3122 | if (r < 0) | |
3123 | /* allocation errors are ignored */ | |
3124 | return; | |
3125 | ||
3126 | link_ref(link); | |
3127 | } | |
3128 | ||
3129 | /* The serialized state in /run is up-to-date */ | |
3130 | void link_clean(Link *link) { | |
3131 | assert(link); | |
3132 | assert(link->manager); | |
3133 | ||
3134 | set_remove(link->manager->dirty_links, link); | |
3135 | link_unref(link); | |
3136 | } | |
3137 | ||
fe8db0c5 | 3138 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 3139 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
3140 | [LINK_STATE_ENSLAVING] = "configuring", |
3141 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
3142 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
3143 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 3144 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 3145 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 3146 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
3147 | }; |
3148 | ||
3149 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
3150 | |
3151 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
3152 | [LINK_OPERSTATE_OFF] = "off", |
3153 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
3154 | [LINK_OPERSTATE_DORMANT] = "dormant", |
3155 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
3156 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
3157 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
3158 | }; | |
3159 | ||
3160 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |