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f579559b TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <netinet/ether.h> | |
23 | #include <linux/if.h> | |
4cc7a82c | 24 | #include <unistd.h> |
f579559b | 25 | |
b5efdb8a | 26 | #include "alloc-util.h" |
1346b1f0 | 27 | #include "bus-util.h" |
bd91b83e | 28 | #include "dhcp-lease-internal.h" |
f833694d | 29 | #include "event-util.h" |
3ffd4af2 | 30 | #include "fd-util.h" |
cf1d700d TG |
31 | #include "fileio.h" |
32 | #include "netlink-util.h" | |
c6f7c917 | 33 | #include "network-internal.h" |
3ffd4af2 LP |
34 | #include "networkd-link.h" |
35 | #include "networkd-netdev.h" | |
cf1d700d TG |
36 | #include "set.h" |
37 | #include "socket-util.h" | |
15a5e950 | 38 | #include "stdio-util.h" |
8b43440b | 39 | #include "string-table.h" |
cf1d700d TG |
40 | #include "udev-util.h" |
41 | #include "util.h" | |
42 | #include "virt.h" | |
fc2f9534 | 43 | |
a97dcc12 | 44 | bool link_dhcp6_enabled(Link *link) { |
78c958f8 TG |
45 | if (link->flags & IFF_LOOPBACK) |
46 | return false; | |
47 | ||
48 | if (!link->network) | |
49 | return false; | |
50 | ||
e0ee46f2 | 51 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
52 | } |
53 | ||
a97dcc12 | 54 | bool link_dhcp4_enabled(Link *link) { |
78c958f8 TG |
55 | if (link->flags & IFF_LOOPBACK) |
56 | return false; | |
57 | ||
58 | if (!link->network) | |
59 | return false; | |
60 | ||
e0ee46f2 | 61 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
62 | } |
63 | ||
a97dcc12 | 64 | bool link_dhcp4_server_enabled(Link *link) { |
78c958f8 TG |
65 | if (link->flags & IFF_LOOPBACK) |
66 | return false; | |
67 | ||
68 | if (!link->network) | |
69 | return false; | |
70 | ||
71 | return link->network->dhcp_server; | |
72 | } | |
73 | ||
a97dcc12 | 74 | bool link_ipv4ll_enabled(Link *link) { |
78c958f8 TG |
75 | if (link->flags & IFF_LOOPBACK) |
76 | return false; | |
77 | ||
78 | if (!link->network) | |
79 | return false; | |
80 | ||
e0ee46f2 | 81 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
82 | } |
83 | ||
84 | bool link_ipv6ll_enabled(Link *link) { | |
85 | if (link->flags & IFF_LOOPBACK) | |
86 | return false; | |
87 | ||
88 | if (!link->network) | |
89 | return false; | |
90 | ||
e0ee46f2 | 91 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
92 | } |
93 | ||
a97dcc12 | 94 | bool link_lldp_enabled(Link *link) { |
ce43e484 SS |
95 | if (link->flags & IFF_LOOPBACK) |
96 | return false; | |
97 | ||
98 | if (!link->network) | |
99 | return false; | |
100 | ||
5a8bcb67 | 101 | if (link->network->bridge) |
ce43e484 SS |
102 | return false; |
103 | ||
104 | return link->network->lldp; | |
105 | } | |
106 | ||
769d324c | 107 | static bool link_ipv4_forward_enabled(Link *link) { |
5a8bcb67 LP |
108 | if (link->flags & IFF_LOOPBACK) |
109 | return false; | |
110 | ||
111 | if (!link->network) | |
112 | return false; | |
113 | ||
e0ee46f2 | 114 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
115 | } |
116 | ||
117 | static bool link_ipv6_forward_enabled(Link *link) { | |
118 | if (link->flags & IFF_LOOPBACK) | |
119 | return false; | |
120 | ||
121 | if (!link->network) | |
122 | return false; | |
123 | ||
e0ee46f2 | 124 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
125 | } |
126 | ||
1f0d9695 | 127 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
49092e22 | 128 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 129 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
130 | |
131 | if (!link->network) | |
1f0d9695 | 132 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
133 | |
134 | return link->network->ipv6_privacy_extensions; | |
135 | } | |
136 | ||
84de38c5 TG |
137 | void link_update_operstate(Link *link) { |
138 | LinkOperationalState operstate; | |
139 | assert(link); | |
140 | ||
141 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
142 | operstate = LINK_OPERSTATE_DORMANT; | |
143 | else if (link_has_carrier(link)) { | |
144 | Address *address; | |
145 | uint8_t scope = RT_SCOPE_NOWHERE; | |
146 | Iterator i; | |
147 | ||
148 | /* if we have carrier, check what addresses we have */ | |
149 | SET_FOREACH(address, link->addresses, i) { | |
150 | if (!address_is_ready(address)) | |
151 | continue; | |
152 | ||
153 | if (address->scope < scope) | |
154 | scope = address->scope; | |
155 | } | |
156 | ||
157 | /* for operstate we also take foreign addresses into account */ | |
158 | SET_FOREACH(address, link->addresses_foreign, i) { | |
159 | if (!address_is_ready(address)) | |
160 | continue; | |
161 | ||
162 | if (address->scope < scope) | |
163 | scope = address->scope; | |
164 | } | |
165 | ||
166 | if (scope < RT_SCOPE_SITE) | |
167 | /* universally accessible addresses found */ | |
168 | operstate = LINK_OPERSTATE_ROUTABLE; | |
169 | else if (scope < RT_SCOPE_HOST) | |
170 | /* only link or site local addresses found */ | |
171 | operstate = LINK_OPERSTATE_DEGRADED; | |
172 | else | |
173 | /* no useful addresses found */ | |
174 | operstate = LINK_OPERSTATE_CARRIER; | |
175 | } else if (link->flags & IFF_UP) | |
176 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
177 | else | |
178 | operstate = LINK_OPERSTATE_OFF; | |
179 | ||
180 | if (link->operstate != operstate) { | |
181 | link->operstate = operstate; | |
182 | link_send_changed(link, "OperationalState", NULL); | |
183 | link_dirty(link); | |
184 | manager_dirty(link->manager); | |
185 | } | |
186 | } | |
187 | ||
51d18171 TG |
188 | #define FLAG_STRING(string, flag, old, new) \ |
189 | (((old ^ new) & flag) \ | |
190 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
191 | : "") | |
192 | ||
1c4baffc | 193 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
194 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
195 | uint8_t operstate; | |
196 | int r; | |
197 | ||
198 | assert(link); | |
199 | ||
200 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
201 | if (r < 0) |
202 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 203 | |
1c4baffc | 204 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
205 | if (r < 0) |
206 | /* if we got a message without operstate, take it to mean | |
207 | the state was unchanged */ | |
208 | operstate = link->kernel_operstate; | |
209 | ||
210 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
211 | return 0; | |
212 | ||
213 | if (link->flags != flags) { | |
6a7a4e4d | 214 | 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 |
215 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
216 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
217 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
218 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
219 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
220 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
221 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
222 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
223 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
224 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
225 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
226 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
227 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
228 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
229 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
230 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
231 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
232 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
233 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
234 | ||
235 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
236 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
237 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
238 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
239 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
240 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
241 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
242 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
243 | ||
244 | /* link flags are currently at most 18 bits, let's align to | |
245 | * printing 20 */ | |
246 | if (unknown_flags_added) | |
79008bdd | 247 | log_link_debug(link, |
6a7a4e4d | 248 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
249 | unknown_flags_added); |
250 | ||
251 | if (unknown_flags_removed) | |
79008bdd | 252 | log_link_debug(link, |
6a7a4e4d | 253 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
254 | unknown_flags_removed); |
255 | } | |
256 | ||
257 | link->flags = flags; | |
258 | link->kernel_operstate = operstate; | |
259 | ||
84de38c5 | 260 | link_update_operstate(link); |
51d18171 TG |
261 | |
262 | return 0; | |
263 | } | |
264 | ||
1c4baffc | 265 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 266 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 267 | uint16_t type; |
ca4e095a | 268 | const char *ifname; |
505f8da7 | 269 | int r, ifindex; |
f579559b | 270 | |
0c2f9b84 | 271 | assert(manager); |
505f8da7 | 272 | assert(message); |
f579559b TG |
273 | assert(ret); |
274 | ||
1c4baffc | 275 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
276 | if (r < 0) |
277 | return r; | |
278 | else if (type != RTM_NEWLINK) | |
279 | return -EINVAL; | |
280 | ||
281 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
282 | if (r < 0) | |
283 | return r; | |
284 | else if (ifindex <= 0) | |
285 | return -EINVAL; | |
286 | ||
1c4baffc | 287 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
288 | if (r < 0) |
289 | return r; | |
290 | ||
f579559b TG |
291 | link = new0(Link, 1); |
292 | if (!link) | |
293 | return -ENOMEM; | |
294 | ||
14b746f7 | 295 | link->n_ref = 1; |
5a3eb5a7 | 296 | link->manager = manager; |
8434fd5c | 297 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 298 | link->rtnl_extended_attrs = true; |
505f8da7 TG |
299 | link->ifindex = ifindex; |
300 | link->ifname = strdup(ifname); | |
301 | if (!link->ifname) | |
302 | return -ENOMEM; | |
f579559b | 303 | |
1c4baffc | 304 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 305 | if (r < 0) |
79008bdd | 306 | log_link_debug(link, "MAC address not found for new device, continuing without"); |
512922f8 | 307 | |
3c9b8860 TG |
308 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", |
309 | link->ifindex); | |
fe8db0c5 | 310 | if (r < 0) |
315db1a8 | 311 | return -ENOMEM; |
fe8db0c5 | 312 | |
3c9b8860 TG |
313 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", |
314 | link->ifindex); | |
68a8723c TG |
315 | if (r < 0) |
316 | return -ENOMEM; | |
317 | ||
49699bac SS |
318 | r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", |
319 | link->ifindex); | |
320 | if (r < 0) | |
321 | return -ENOMEM; | |
322 | ||
323 | ||
d5099efc | 324 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
325 | if (r < 0) |
326 | return r; | |
327 | ||
328 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
329 | if (r < 0) |
330 | return r; | |
331 | ||
51d18171 TG |
332 | r = link_update_flags(link, message); |
333 | if (r < 0) | |
334 | return r; | |
335 | ||
f579559b TG |
336 | *ret = link; |
337 | link = NULL; | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
14b746f7 | 342 | static void link_free(Link *link) { |
428fd0a7 | 343 | Address *address; |
0d4ad91d AR |
344 | Iterator i; |
345 | Link *carrier; | |
428fd0a7 | 346 | |
f579559b TG |
347 | if (!link) |
348 | return; | |
349 | ||
cf1d700d TG |
350 | while (!set_isempty(link->addresses)) |
351 | address_free(set_first(link->addresses)); | |
352 | ||
adda1ed9 TG |
353 | while (!set_isempty(link->addresses_foreign)) |
354 | address_free(set_first(link->addresses_foreign)); | |
355 | ||
4701725c HV |
356 | link->addresses = set_free(link->addresses); |
357 | ||
358 | link->addresses_foreign = set_free(link->addresses_foreign); | |
adda1ed9 | 359 | |
11bf3cce LP |
360 | while ((address = link->pool_addresses)) { |
361 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
362 | address_free(address); | |
363 | } | |
364 | ||
bfcdba8d | 365 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 366 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 367 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 368 | |
68a8723c TG |
369 | free(link->lease_file); |
370 | ||
07e10d1a TG |
371 | sd_lldp_free(link->lldp); |
372 | ||
49699bac SS |
373 | free(link->lldp_file); |
374 | ||
56cd007a | 375 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 376 | sd_dhcp6_client_unref(link->dhcp6_client); |
de1e9928 | 377 | sd_ndisc_unref(link->ndisc_router_discovery); |
4138fb2c | 378 | |
28aeb07f | 379 | if (link->manager) |
ae06ab10 | 380 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 381 | |
c166a070 | 382 | free(link->ifname); |
68a8723c | 383 | |
84de38c5 | 384 | (void)unlink(link->state_file); |
fe8db0c5 | 385 | free(link->state_file); |
c166a070 | 386 | |
b5db00e5 UTL |
387 | udev_device_unref(link->udev_device); |
388 | ||
0d4ad91d AR |
389 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
390 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
391 | hashmap_free(link->bound_to_links); | |
392 | ||
393 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
394 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
395 | hashmap_free(link->bound_by_links); | |
396 | ||
f579559b TG |
397 | free(link); |
398 | } | |
399 | ||
14b746f7 | 400 | Link *link_unref(Link *link) { |
957325b7 TG |
401 | if (!link) |
402 | return NULL; | |
403 | ||
404 | assert(link->n_ref > 0); | |
405 | ||
406 | link->n_ref --; | |
407 | ||
408 | if (link->n_ref > 0) | |
409 | return NULL; | |
410 | ||
411 | link_free(link); | |
14b746f7 TG |
412 | |
413 | return NULL; | |
414 | } | |
415 | ||
416 | Link *link_ref(Link *link) { | |
957325b7 TG |
417 | if (!link) |
418 | return NULL; | |
419 | ||
420 | assert(link->n_ref > 0); | |
421 | ||
422 | link->n_ref ++; | |
14b746f7 TG |
423 | |
424 | return link; | |
425 | } | |
426 | ||
11a7f229 TG |
427 | int link_get(Manager *m, int ifindex, Link **ret) { |
428 | Link *link; | |
11a7f229 TG |
429 | |
430 | assert(m); | |
11a7f229 TG |
431 | assert(ifindex); |
432 | assert(ret); | |
433 | ||
ae06ab10 | 434 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
435 | if (!link) |
436 | return -ENODEV; | |
437 | ||
438 | *ret = link; | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
e331e246 TG |
443 | static void link_set_state(Link *link, LinkState state) { |
444 | assert(link); | |
445 | ||
446 | if (link->state == state) | |
447 | return; | |
448 | ||
449 | link->state = state; | |
450 | ||
451 | link_send_changed(link, "AdministrativeState", NULL); | |
452 | ||
453 | return; | |
454 | } | |
455 | ||
57bd6899 TG |
456 | static void link_enter_unmanaged(Link *link) { |
457 | assert(link); | |
458 | ||
6a7a4e4d | 459 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 460 | |
e331e246 | 461 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 462 | |
84de38c5 | 463 | link_dirty(link); |
57bd6899 TG |
464 | } |
465 | ||
111bb8f9 TG |
466 | static int link_stop_clients(Link *link) { |
467 | int r = 0, k; | |
468 | ||
469 | assert(link); | |
470 | assert(link->manager); | |
471 | assert(link->manager->event); | |
472 | ||
473 | if (!link->network) | |
474 | return 0; | |
475 | ||
ba179154 | 476 | if (link->dhcp_client) { |
111bb8f9 | 477 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d LP |
478 | if (k < 0) |
479 | r = log_link_warning_errno(link, r, "Could not stop DHCPv4 client: %m"); | |
111bb8f9 TG |
480 | } |
481 | ||
ba179154 | 482 | if (link->ipv4ll) { |
111bb8f9 | 483 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d LP |
484 | if (k < 0) |
485 | r = log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m"); | |
dd43110f TG |
486 | } |
487 | ||
de1e9928 | 488 | if(link->ndisc_router_discovery) { |
1873a3d3 PF |
489 | if (link->dhcp6_client) { |
490 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
6a7a4e4d LP |
491 | if (k < 0) |
492 | r = log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); | |
1873a3d3 | 493 | } |
4138fb2c | 494 | |
de1e9928 | 495 | k = sd_ndisc_stop(link->ndisc_router_discovery); |
6a7a4e4d | 496 | if (k < 0) |
ceabaf0f | 497 | r = log_link_warning_errno(link, r, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
498 | } |
499 | ||
ce43e484 | 500 | if (link->lldp) { |
ce43e484 | 501 | k = sd_lldp_stop(link->lldp); |
6a7a4e4d LP |
502 | if (k < 0) |
503 | r = log_link_warning_errno(link, r, "Could not stop LLDP: %m"); | |
ce43e484 SS |
504 | } |
505 | ||
111bb8f9 TG |
506 | return r; |
507 | } | |
508 | ||
b22d8a00 | 509 | void link_enter_failed(Link *link) { |
ef1ba606 | 510 | assert(link); |
f882c247 | 511 | |
370e9930 | 512 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
513 | return; |
514 | ||
6a7a4e4d | 515 | log_link_warning(link, "Failed"); |
449f7554 | 516 | |
e331e246 | 517 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 518 | |
111bb8f9 TG |
519 | link_stop_clients(link); |
520 | ||
84de38c5 | 521 | link_dirty(link); |
f882c247 TG |
522 | } |
523 | ||
4f434938 LP |
524 | static Address* link_find_dhcp_server_address(Link *link) { |
525 | Address *address; | |
526 | ||
527 | assert(link); | |
528 | assert(link->network); | |
529 | ||
d4cdbea5 | 530 | /* The first statically configured address if there is any */ |
4f434938 LP |
531 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
532 | ||
533 | if (address->family != AF_INET) | |
534 | continue; | |
535 | ||
af93291c | 536 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
537 | continue; |
538 | ||
539 | return address; | |
540 | } | |
541 | ||
542 | /* If that didn't work, find a suitable address we got from the pool */ | |
543 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
544 | if (address->family != AF_INET) | |
545 | continue; | |
546 | ||
547 | return address; | |
548 | } | |
549 | ||
550 | return NULL; | |
551 | } | |
552 | ||
dd43110f | 553 | static int link_enter_configured(Link *link) { |
dd43110f TG |
554 | assert(link); |
555 | assert(link->network); | |
556 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
557 | ||
6a7a4e4d | 558 | log_link_info(link, "Configured"); |
dd43110f | 559 | |
e331e246 | 560 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 561 | |
84de38c5 | 562 | link_dirty(link); |
dd43110f TG |
563 | |
564 | return 0; | |
565 | } | |
566 | ||
8012cd39 TG |
567 | void link_check_ready(Link *link) { |
568 | Address *a; | |
569 | Iterator i; | |
570 | ||
3c9b8860 | 571 | assert(link); |
adda1ed9 TG |
572 | |
573 | if (!link->network) | |
574 | return; | |
3c9b8860 TG |
575 | |
576 | if (!link->static_configured) | |
577 | return; | |
578 | ||
78c958f8 | 579 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
580 | if (!link->ipv4ll_address || |
581 | !link->ipv4ll_route) | |
582 | return; | |
583 | ||
3ada37a2 PF |
584 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
585 | !link->dhcp4_configured) || | |
586 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
587 | !link->dhcp6_configured) || | |
588 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
589 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
18d29550 PF |
590 | return; |
591 | ||
8012cd39 TG |
592 | SET_FOREACH(a, link->addresses, i) |
593 | if (!address_is_ready(a)) | |
594 | return; | |
595 | ||
9fdaa992 TG |
596 | if (link->state != LINK_STATE_CONFIGURED) |
597 | link_enter_configured(link); | |
3c9b8860 TG |
598 | |
599 | return; | |
600 | } | |
601 | ||
1c4baffc | 602 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 603 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
604 | int r; |
605 | ||
3c9b8860 | 606 | assert(link->link_messages > 0); |
370e9930 TG |
607 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
608 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
609 | LINK_STATE_LINGER)); | |
f882c247 | 610 | |
3c9b8860 | 611 | link->link_messages --; |
f882c247 | 612 | |
77a008c0 | 613 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
614 | return 1; |
615 | ||
1c4baffc | 616 | r = sd_netlink_message_get_errno(m); |
c166a070 | 617 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 618 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 619 | |
3c9b8860 | 620 | if (link->link_messages == 0) { |
6a7a4e4d | 621 | log_link_debug(link, "Routes set"); |
3c9b8860 | 622 | link->static_configured = true; |
8012cd39 | 623 | link_check_ready(link); |
dd3efc09 | 624 | } |
f882c247 TG |
625 | |
626 | return 1; | |
627 | } | |
628 | ||
629 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 630 | Route *rt; |
f882c247 TG |
631 | int r; |
632 | ||
633 | assert(link); | |
634 | assert(link->network); | |
ef1ba606 | 635 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 636 | |
e331e246 | 637 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 638 | |
3d3d4255 | 639 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 640 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 641 | if (r < 0) { |
6a7a4e4d | 642 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 643 | link_enter_failed(link); |
a6cc569e TG |
644 | return r; |
645 | } | |
646 | ||
3c9b8860 | 647 | link->link_messages ++; |
8ddbeaa2 | 648 | } |
f5be5601 | 649 | |
3c9b8860 TG |
650 | if (link->link_messages == 0) { |
651 | link->static_configured = true; | |
8012cd39 | 652 | link_check_ready(link); |
431ca2ce | 653 | } else |
6a7a4e4d | 654 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
655 | |
656 | return 0; | |
657 | } | |
658 | ||
91b5f997 | 659 | int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 660 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
661 | int r; |
662 | ||
663 | assert(m); | |
664 | assert(link); | |
665 | assert(link->ifname); | |
666 | ||
5da8149f | 667 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
668 | return 1; |
669 | ||
1c4baffc | 670 | r = sd_netlink_message_get_errno(m); |
b90b025a | 671 | if (r < 0 && r != -ESRCH) |
a2fae7bb | 672 | log_link_warning_errno(link, r, "Could not drop route: %m"); |
5c1d3fc9 | 673 | |
5bdd314c | 674 | return 1; |
5c1d3fc9 UTL |
675 | } |
676 | ||
1c4baffc | 677 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 678 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
679 | int r; |
680 | ||
4958aee4 | 681 | assert(rtnl); |
f5be5601 TG |
682 | assert(m); |
683 | assert(link); | |
684 | assert(link->ifname); | |
3c9b8860 | 685 | assert(link->link_messages > 0); |
370e9930 TG |
686 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
687 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 688 | |
3c9b8860 | 689 | link->link_messages --; |
f882c247 | 690 | |
5da8149f | 691 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
692 | return 1; |
693 | ||
1c4baffc | 694 | r = sd_netlink_message_get_errno(m); |
c166a070 | 695 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 696 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 697 | else if (r >= 0) |
200a0868 | 698 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 699 | |
3c9b8860 | 700 | if (link->link_messages == 0) { |
6a7a4e4d | 701 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 702 | link_enter_set_routes(link); |
dd3efc09 | 703 | } |
f882c247 TG |
704 | |
705 | return 1; | |
706 | } | |
707 | ||
4f5f911e LP |
708 | static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
709 | _cleanup_free_ struct in_addr *addresses = NULL; | |
710 | size_t n_addresses = 0, n_allocated = 0; | |
711 | char **a; | |
712 | ||
713 | log_debug("Copying DNS server information from %s", link->ifname); | |
714 | ||
715 | if (!link->network) | |
716 | return 0; | |
717 | ||
718 | STRV_FOREACH(a, link->network->dns) { | |
719 | struct in_addr ia; | |
720 | ||
721 | /* Only look for IPv4 addresses */ | |
722 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
723 | continue; | |
724 | ||
725 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
726 | return log_oom(); | |
727 | ||
728 | addresses[n_addresses++] = ia; | |
729 | } | |
730 | ||
731 | if (link->network->dhcp_dns && | |
732 | link->dhcp_lease) { | |
733 | const struct in_addr *da = NULL; | |
734 | int n; | |
735 | ||
736 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
737 | if (n > 0) { | |
738 | ||
739 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
740 | return log_oom(); | |
741 | ||
742 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
743 | n_addresses += n; | |
744 | } | |
745 | } | |
746 | ||
747 | if (n_addresses <= 0) | |
748 | return 0; | |
749 | ||
750 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
751 | } | |
752 | ||
753 | static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { | |
754 | _cleanup_free_ struct in_addr *addresses = NULL; | |
755 | size_t n_addresses = 0, n_allocated = 0; | |
756 | char **a; | |
757 | ||
758 | if (!link->network) | |
759 | return 0; | |
760 | ||
761 | log_debug("Copying NTP server information from %s", link->ifname); | |
762 | ||
763 | STRV_FOREACH(a, link->network->ntp) { | |
764 | struct in_addr ia; | |
765 | ||
766 | /* Only look for IPv4 addresses */ | |
767 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
768 | continue; | |
769 | ||
770 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
771 | return log_oom(); | |
772 | ||
773 | addresses[n_addresses++] = ia; | |
774 | } | |
775 | ||
776 | if (link->network->dhcp_ntp && | |
777 | link->dhcp_lease) { | |
778 | const struct in_addr *da = NULL; | |
779 | int n; | |
780 | ||
781 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
782 | if (n > 0) { | |
783 | ||
784 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
785 | return log_oom(); | |
786 | ||
787 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
788 | n_addresses += n; | |
789 | } | |
790 | } | |
791 | ||
792 | if (n_addresses <= 0) | |
793 | return 0; | |
794 | ||
795 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
796 | } | |
797 | ||
f882c247 | 798 | static int link_enter_set_addresses(Link *link) { |
a6cc569e | 799 | Address *ad; |
f882c247 TG |
800 | int r; |
801 | ||
802 | assert(link); | |
803 | assert(link->network); | |
f5be5601 | 804 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 805 | |
e331e246 | 806 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 807 | |
3d3d4255 | 808 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
66669078 | 809 | r = address_configure(ad, link, &address_handler, false); |
dd3efc09 | 810 | if (r < 0) { |
5a8bcb67 | 811 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
812 | link_enter_failed(link); |
813 | return r; | |
814 | } | |
815 | ||
3c9b8860 | 816 | link->link_messages ++; |
f882c247 TG |
817 | } |
818 | ||
d4cdbea5 TG |
819 | /* now that we can figure out a default address for the dhcp server, |
820 | start it */ | |
821 | if (link_dhcp4_server_enabled(link)) { | |
d4cdbea5 | 822 | Address *address; |
4f5f911e LP |
823 | Link *uplink = NULL; |
824 | bool acquired_uplink = false; | |
d4cdbea5 TG |
825 | |
826 | address = link_find_dhcp_server_address(link); | |
827 | if (!address) { | |
6a7a4e4d | 828 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
829 | link_enter_failed(link); |
830 | return 0; | |
831 | } | |
832 | ||
61986155 | 833 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
834 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
835 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
836 | if (r < 0) |
837 | return r; | |
838 | ||
839 | /* TODO: | |
840 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
841 | &main_address->in_addr.in); | |
842 | if (r < 0) | |
843 | return r; | |
d4cdbea5 TG |
844 | */ |
845 | ||
586ac6f7 LP |
846 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
847 | r = sd_dhcp_server_set_max_lease_time( | |
848 | link->dhcp_server, | |
849 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
850 | if (r < 0) | |
851 | return r; | |
852 | } | |
853 | ||
854 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
855 | r = sd_dhcp_server_set_default_lease_time( | |
856 | link->dhcp_server, | |
857 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
858 | if (r < 0) | |
859 | return r; | |
860 | } | |
861 | ||
1a04db0f LP |
862 | if (link->network->dhcp_server_emit_dns) { |
863 | ||
4f5f911e | 864 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 865 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
866 | else { |
867 | uplink = manager_find_uplink(link->manager, link); | |
868 | acquired_uplink = true; | |
869 | ||
870 | if (!uplink) { | |
871 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
872 | r = 0; | |
873 | } else | |
874 | r = link_push_dns_to_dhcp_server(uplink, link->dhcp_server); | |
875 | } | |
876 | if (r < 0) | |
877 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
878 | } |
879 | ||
880 | ||
881 | if (link->network->dhcp_server_emit_ntp) { | |
882 | ||
4f5f911e | 883 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 884 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
885 | else { |
886 | if (!acquired_uplink) | |
887 | uplink = manager_find_uplink(link->manager, link); | |
888 | ||
889 | if (!uplink) { | |
890 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
891 | r = 0; | |
892 | } else | |
893 | r = link_push_ntp_to_dhcp_server(uplink, link->dhcp_server); | |
894 | ||
895 | } | |
896 | if (r < 0) | |
897 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
898 | } |
899 | ||
8eb9058d LP |
900 | if (link->network->dhcp_server_emit_timezone) { |
901 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 902 | const char *tz = NULL; |
8eb9058d LP |
903 | |
904 | if (link->network->dhcp_server_timezone) | |
905 | tz = link->network->dhcp_server_timezone; | |
906 | else { | |
907 | r = get_timezone(&buffer); | |
908 | if (r < 0) | |
909 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
910 | else | |
911 | tz = buffer; | |
912 | } | |
913 | ||
914 | if (tz) { | |
915 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
916 | if (r < 0) | |
917 | return r; | |
918 | } | |
919 | } | |
920 | ||
d4cdbea5 TG |
921 | r = sd_dhcp_server_start(link->dhcp_server); |
922 | if (r < 0) { | |
6a7a4e4d | 923 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
924 | |
925 | link_enter_failed(link); | |
926 | ||
927 | return 0; | |
928 | } | |
929 | ||
6a7a4e4d | 930 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
931 | } |
932 | ||
6a7a4e4d | 933 | if (link->link_messages == 0) |
431ca2ce | 934 | link_enter_set_routes(link); |
6a7a4e4d LP |
935 | else |
936 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 937 | |
f882c247 TG |
938 | return 0; |
939 | } | |
940 | ||
91b5f997 | 941 | int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 942 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
943 | int r; |
944 | ||
945 | assert(m); | |
946 | assert(link); | |
947 | assert(link->ifname); | |
948 | ||
5da8149f | 949 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
950 | return 1; |
951 | ||
1c4baffc | 952 | r = sd_netlink_message_get_errno(m); |
b90b025a | 953 | if (r < 0 && r != -EADDRNOTAVAIL) |
a2fae7bb | 954 | log_link_warning_errno(link, r, "Could not drop address: %m"); |
ff254138 | 955 | |
5bdd314c | 956 | return 1; |
ff254138 TG |
957 | } |
958 | ||
a245ced0 | 959 | static int link_set_bridge_fdb(Link *const link) { |
b98b483b AR |
960 | FdbEntry *fdb_entry; |
961 | int r = 0; | |
962 | ||
963 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
ea6ec096 | 964 | r = fdb_entry_configure(link, fdb_entry); |
b98b483b | 965 | if(r < 0) { |
6a7a4e4d | 966 | log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
b98b483b AR |
967 | break; |
968 | } | |
969 | } | |
970 | ||
971 | return r; | |
972 | } | |
973 | ||
1c4baffc | 974 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
975 | _cleanup_link_unref_ Link *link = userdata; |
976 | int r; | |
977 | ||
6a7a4e4d | 978 | log_link_debug(link, "Set link"); |
e1853b00 | 979 | |
1c4baffc | 980 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 981 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 982 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
983 | link_enter_failed(link); |
984 | return 1; | |
985 | } | |
986 | ||
987 | return 0; | |
988 | } | |
989 | ||
19070062 | 990 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
5da8149f | 991 | _cleanup_link_unref_ Link *link = userdata; |
21b80ad1 | 992 | const sd_bus_error *e; |
1346b1f0 | 993 | |
19070062 | 994 | assert(m); |
b226d99b TG |
995 | assert(link); |
996 | ||
5da8149f | 997 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 998 | return 1; |
370e9930 | 999 | |
21b80ad1 LP |
1000 | e = sd_bus_message_get_error(m); |
1001 | if (e) | |
1002 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); | |
1346b1f0 TG |
1003 | |
1004 | return 1; | |
1005 | } | |
1006 | ||
3c9b8860 | 1007 | int link_set_hostname(Link *link, const char *hostname) { |
21b80ad1 | 1008 | int r; |
1346b1f0 | 1009 | |
b226d99b TG |
1010 | assert(link); |
1011 | assert(link->manager); | |
1346b1f0 | 1012 | |
dce391e7 | 1013 | log_link_debug(link, "Setting transient hostname: '%s'", strna(hostname)); |
1346b1f0 | 1014 | |
3c9b8860 TG |
1015 | if (!link->manager->bus) { |
1016 | /* TODO: replace by assert when we can rely on kdbus */ | |
6a7a4e4d | 1017 | log_link_info(link, "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
1018 | return 0; |
1019 | } | |
1020 | ||
9c34154a | 1021 | r = sd_bus_call_method_async( |
b226d99b | 1022 | link->manager->bus, |
9c34154a | 1023 | NULL, |
1346b1f0 TG |
1024 | "org.freedesktop.hostname1", |
1025 | "/org/freedesktop/hostname1", | |
1026 | "org.freedesktop.hostname1", | |
9c34154a UTL |
1027 | "SetHostname", |
1028 | set_hostname_handler, | |
1029 | link, | |
1030 | "sb", | |
1031 | hostname, | |
1032 | false); | |
1346b1f0 | 1033 | |
6a7a4e4d LP |
1034 | if (r < 0) |
1035 | return log_link_error_errno(link, r, "Could not set transient hostname: %m"); | |
b226d99b TG |
1036 | |
1037 | link_ref(link); | |
1346b1f0 | 1038 | |
5da8149f | 1039 | return 0; |
1346b1f0 TG |
1040 | } |
1041 | ||
21b80ad1 LP |
1042 | static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
1043 | _cleanup_link_unref_ Link *link = userdata; | |
1044 | const sd_bus_error *e; | |
1045 | ||
1046 | assert(m); | |
1047 | assert(link); | |
1048 | ||
1049 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1050 | return 1; | |
1051 | ||
1052 | e = sd_bus_message_get_error(m); | |
1053 | if (e) | |
1054 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); | |
1055 | ||
1056 | return 1; | |
1057 | } | |
1058 | ||
64d6c229 | 1059 | int link_set_timezone(Link *link, const char *tz) { |
21b80ad1 LP |
1060 | int r; |
1061 | ||
1062 | assert(link); | |
1063 | assert(link->manager); | |
64d6c229 | 1064 | assert(tz); |
21b80ad1 | 1065 | |
64d6c229 | 1066 | log_link_debug(link, "Setting system timezone: '%s'", tz); |
21b80ad1 LP |
1067 | |
1068 | if (!link->manager->bus) { | |
1069 | log_link_info(link, "Not connected to system bus, ignoring timezone."); | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | r = sd_bus_call_method_async( | |
1074 | link->manager->bus, | |
1075 | NULL, | |
1076 | "org.freedesktop.timedate1", | |
1077 | "/org/freedesktop/timedate1", | |
1078 | "org.freedesktop.timedate1", | |
1079 | "SetTimezone", | |
1080 | set_timezone_handler, | |
1081 | link, | |
1082 | "sb", | |
64d6c229 | 1083 | tz, |
21b80ad1 LP |
1084 | false); |
1085 | if (r < 0) | |
1086 | return log_link_error_errno(link, r, "Could not set timezone: %m"); | |
1087 | ||
1088 | link_ref(link); | |
1089 | ||
1090 | return 0; | |
1091 | } | |
1092 | ||
1c4baffc | 1093 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1094 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
1095 | int r; |
1096 | ||
1097 | assert(m); | |
1098 | assert(link); | |
1099 | assert(link->ifname); | |
1100 | ||
5da8149f | 1101 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1102 | return 1; |
1103 | ||
1c4baffc | 1104 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 1105 | if (r < 0) |
a2fae7bb | 1106 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
4f882b2a TG |
1107 | |
1108 | return 1; | |
1109 | } | |
1110 | ||
3c9b8860 | 1111 | int link_set_mtu(Link *link, uint32_t mtu) { |
1c4baffc | 1112 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f882b2a TG |
1113 | int r; |
1114 | ||
1115 | assert(link); | |
1116 | assert(link->manager); | |
1117 | assert(link->manager->rtnl); | |
1118 | ||
6a7a4e4d | 1119 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1120 | |
6a7a4e4d LP |
1121 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1122 | if (r < 0) | |
1123 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1124 | |
1c4baffc | 1125 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1126 | if (r < 0) |
1127 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1128 | |
1c4baffc | 1129 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
1130 | if (r < 0) |
1131 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1132 | |
ae941762 | 1133 | link_ref(link); |
b226d99b | 1134 | |
4f882b2a TG |
1135 | return 0; |
1136 | } | |
1137 | ||
e1853b00 | 1138 | static int link_set_bridge(Link *link) { |
1c4baffc | 1139 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
e1853b00 SS |
1140 | int r; |
1141 | ||
1142 | assert(link); | |
1143 | assert(link->network); | |
1144 | ||
6a7a4e4d LP |
1145 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1146 | if (r < 0) | |
1147 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1148 | |
1149 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1150 | if (r < 0) |
1151 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1152 | |
1c4baffc | 1153 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1154 | if (r < 0) |
1155 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1156 | |
84c34096 | 1157 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, !link->network->use_bpdu); |
eb7ff4dd SS |
1158 | if (r < 0) |
1159 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1160 | ||
1161 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1162 | if (r < 0) | |
1163 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1164 | ||
1165 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1166 | if (r < 0) | |
1167 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1168 | ||
23da66bb | 1169 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, !link->network->allow_port_to_be_root); |
eb7ff4dd SS |
1170 | if (r < 0) |
1171 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
1172 | ||
1173 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1174 | if (r < 0) | |
1175 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
1176 | ||
e1853b00 | 1177 | if(link->network->cost != 0) { |
1c4baffc | 1178 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1179 | if (r < 0) |
1180 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 SS |
1181 | } |
1182 | ||
1c4baffc | 1183 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1184 | if (r < 0) |
1185 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1186 | |
1c4baffc | 1187 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
1188 | if (r < 0) |
1189 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1190 | |
1191 | link_ref(link); | |
1192 | ||
1193 | return r; | |
1194 | } | |
1195 | ||
49699bac SS |
1196 | static void lldp_handler(sd_lldp *lldp, int event, void *userdata) { |
1197 | Link *link = userdata; | |
1198 | int r; | |
1199 | ||
1200 | assert(link); | |
1201 | assert(link->network); | |
1202 | assert(link->manager); | |
1203 | ||
9ef61f2e DH |
1204 | switch (event) { |
1205 | case SD_LLDP_EVENT_UPDATE_INFO: | |
1206 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
1207 | if (r < 0) | |
1208 | log_link_warning_errno(link, r, "Could not save LLDP: %m"); | |
49699bac | 1209 | |
9ef61f2e DH |
1210 | break; |
1211 | default: | |
1212 | break; | |
1213 | } | |
49699bac SS |
1214 | } |
1215 | ||
ff254138 TG |
1216 | static int link_acquire_conf(Link *link) { |
1217 | int r; | |
1218 | ||
1219 | assert(link); | |
1220 | assert(link->network); | |
ff254138 TG |
1221 | assert(link->manager); |
1222 | assert(link->manager->event); | |
1223 | ||
78c958f8 | 1224 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1225 | assert(link->ipv4ll); |
ff254138 | 1226 | |
6a7a4e4d | 1227 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1228 | |
1229 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1230 | if (r < 0) |
1231 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1232 | } |
1233 | ||
78c958f8 | 1234 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1235 | assert(link->dhcp_client); |
ff254138 | 1236 | |
6a7a4e4d | 1237 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1238 | |
5c1d3fc9 | 1239 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1240 | if (r < 0) |
1241 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1242 | } |
ff254138 | 1243 | |
78c958f8 | 1244 | if (link_dhcp6_enabled(link)) { |
de1e9928 | 1245 | assert(link->ndisc_router_discovery); |
4138fb2c | 1246 | |
6a7a4e4d | 1247 | log_link_debug(link, "Discovering IPv6 routers"); |
4138fb2c | 1248 | |
de1e9928 | 1249 | r = sd_ndisc_router_discovery_start(link->ndisc_router_discovery); |
6a7a4e4d | 1250 | if (r < 0) |
ceabaf0f | 1251 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
4138fb2c PF |
1252 | } |
1253 | ||
ce43e484 SS |
1254 | if (link_lldp_enabled(link)) { |
1255 | assert(link->lldp); | |
1256 | ||
1257 | log_link_debug(link, "Starting LLDP"); | |
1258 | ||
1259 | r = sd_lldp_start(link->lldp); | |
6a7a4e4d LP |
1260 | if (r < 0) |
1261 | return log_link_warning_errno(link, r, "Could not start LLDP: %m"); | |
ce43e484 SS |
1262 | } |
1263 | ||
ff254138 TG |
1264 | return 0; |
1265 | } | |
1266 | ||
a61bb41c | 1267 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1268 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1269 | ||
a61bb41c | 1270 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1271 | return true; |
1272 | ||
a61bb41c | 1273 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1274 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1275 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1276 | return true; |
1277 | ||
1278 | return false; | |
1279 | } | |
1280 | ||
1c4baffc | 1281 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1282 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1283 | int r; |
1284 | ||
1746cf2a TG |
1285 | assert(link); |
1286 | ||
5da8149f | 1287 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1288 | return 1; |
1289 | ||
1c4baffc | 1290 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
1291 | if (r < 0) |
1292 | /* we warn but don't fail the link, as it may be | |
1293 | brought up later */ | |
a2fae7bb | 1294 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1295 | |
f882c247 TG |
1296 | return 1; |
1297 | } | |
1298 | ||
1299 | static int link_up(Link *link) { | |
1c4baffc | 1300 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
5c3072ea | 1301 | uint8_t ipv6ll_mode; |
f579559b TG |
1302 | int r; |
1303 | ||
f882c247 | 1304 | assert(link); |
c106cc36 | 1305 | assert(link->network); |
f882c247 TG |
1306 | assert(link->manager); |
1307 | assert(link->manager->rtnl); | |
1308 | ||
6a7a4e4d | 1309 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1310 | |
6a7a4e4d LP |
1311 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1312 | if (r < 0) | |
1313 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1314 | |
5d4795f3 | 1315 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1316 | if (r < 0) |
1317 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1318 | |
c106cc36 | 1319 | if (link->network->mac) { |
1c4baffc | 1320 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1321 | if (r < 0) |
1322 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1323 | } |
1324 | ||
1325 | if (link->network->mtu) { | |
1c4baffc | 1326 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1327 | if (r < 0) |
1328 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1329 | } |
1330 | ||
1c4baffc | 1331 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1332 | if (r < 0) |
1333 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1334 | |
01d28f81 TG |
1335 | if (socket_ipv6_is_supported()) { |
1336 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ | |
1c4baffc | 1337 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1338 | if (r < 0) |
1339 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1340 | |
01d28f81 | 1341 | ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE; |
1c4baffc | 1342 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1343 | if (r < 0) |
1344 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1345 | |
01d28f81 | 1346 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1347 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1348 | if (r < 0) |
1349 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1350 | } | |
1351 | ||
1c4baffc | 1352 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1353 | if (r < 0) |
01d28f81 | 1354 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1355 | } |
d0d6a4cd | 1356 | |
1c4baffc | 1357 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1358 | if (r < 0) |
1359 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1360 | |
1c4baffc | 1361 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1362 | if (r < 0) |
1363 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1364 | |
b226d99b TG |
1365 | link_ref(link); |
1366 | ||
f882c247 TG |
1367 | return 0; |
1368 | } | |
1369 | ||
1c4baffc | 1370 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1371 | _cleanup_link_unref_ Link *link = userdata; |
1372 | int r; | |
1373 | ||
1374 | assert(link); | |
1375 | ||
1376 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1377 | return 1; | |
1378 | ||
1c4baffc | 1379 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1380 | if (r < 0) |
a2fae7bb | 1381 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d AR |
1382 | |
1383 | return 1; | |
1384 | } | |
1385 | ||
1386 | static int link_down(Link *link) { | |
1c4baffc | 1387 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
0d4ad91d AR |
1388 | int r; |
1389 | ||
1390 | assert(link); | |
1391 | assert(link->manager); | |
1392 | assert(link->manager->rtnl); | |
1393 | ||
6a7a4e4d | 1394 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1395 | |
1396 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1397 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1398 | if (r < 0) |
1399 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1400 | |
1401 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1402 | if (r < 0) |
1403 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1404 | |
1c4baffc | 1405 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1406 | if (r < 0) |
1407 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1408 | |
1409 | link_ref(link); | |
1410 | ||
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | static int link_handle_bound_to_list(Link *link) { | |
1415 | Link *l; | |
1416 | Iterator i; | |
1417 | int r; | |
1418 | bool required_up = false; | |
1419 | bool link_is_up = false; | |
1420 | ||
1421 | assert(link); | |
1422 | ||
1423 | if (hashmap_isempty(link->bound_to_links)) | |
1424 | return 0; | |
1425 | ||
1426 | if (link->flags & IFF_UP) | |
1427 | link_is_up = true; | |
1428 | ||
1429 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1430 | if (link_has_carrier(l)) { | |
1431 | required_up = true; | |
1432 | break; | |
1433 | } | |
1434 | ||
1435 | if (!required_up && link_is_up) { | |
1436 | r = link_down(link); | |
1437 | if (r < 0) | |
1438 | return r; | |
1439 | } else if (required_up && !link_is_up) { | |
1440 | r = link_up(link); | |
1441 | if (r < 0) | |
1442 | return r; | |
1443 | } | |
1444 | ||
1445 | return 0; | |
1446 | } | |
1447 | ||
1448 | static int link_handle_bound_by_list(Link *link) { | |
1449 | Iterator i; | |
1450 | Link *l; | |
1451 | int r; | |
1452 | ||
1453 | assert(link); | |
1454 | ||
1455 | if (hashmap_isempty(link->bound_by_links)) | |
1456 | return 0; | |
1457 | ||
1458 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1459 | r = link_handle_bound_to_list(l); | |
1460 | if (r < 0) | |
1461 | return r; | |
1462 | } | |
1463 | ||
1464 | return 0; | |
1465 | } | |
1466 | ||
1467 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1468 | int r; | |
1469 | ||
1470 | assert(link); | |
1471 | assert(carrier); | |
1472 | ||
1473 | if (link == carrier) | |
1474 | return 0; | |
1475 | ||
1476 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1477 | return 0; | |
1478 | ||
1479 | r = hashmap_ensure_allocated(h, NULL); | |
1480 | if (r < 0) | |
1481 | return r; | |
1482 | ||
1483 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1484 | if (r < 0) | |
1485 | return r; | |
1486 | ||
1487 | return 0; | |
1488 | } | |
1489 | ||
1490 | static int link_new_bound_by_list(Link *link) { | |
1491 | Manager *m; | |
1492 | Link *carrier; | |
1493 | Iterator i; | |
1494 | int r; | |
1495 | bool list_updated = false; | |
1496 | ||
1497 | assert(link); | |
1498 | assert(link->manager); | |
1499 | ||
1500 | m = link->manager; | |
1501 | ||
1502 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1503 | if (!carrier->network) | |
1504 | continue; | |
1505 | ||
1506 | if (strv_isempty(carrier->network->bind_carrier)) | |
1507 | continue; | |
1508 | ||
1509 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1510 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1511 | if (r < 0) | |
1512 | return r; | |
1513 | ||
1514 | list_updated = true; | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | if (list_updated) | |
84de38c5 | 1519 | link_dirty(link); |
0d4ad91d AR |
1520 | |
1521 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) { | |
1522 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); | |
1523 | if (r < 0) | |
1524 | return r; | |
1525 | ||
84de38c5 | 1526 | link_dirty(carrier); |
0d4ad91d AR |
1527 | } |
1528 | ||
1529 | return 0; | |
1530 | } | |
1531 | ||
1532 | static int link_new_bound_to_list(Link *link) { | |
1533 | Manager *m; | |
1534 | Link *carrier; | |
1535 | Iterator i; | |
1536 | int r; | |
1537 | bool list_updated = false; | |
1538 | ||
1539 | assert(link); | |
1540 | assert(link->manager); | |
1541 | ||
1542 | if (!link->network) | |
1543 | return 0; | |
1544 | ||
1545 | if (strv_isempty(link->network->bind_carrier)) | |
1546 | return 0; | |
1547 | ||
1548 | m = link->manager; | |
1549 | ||
1550 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1551 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1552 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1553 | if (r < 0) | |
1554 | return r; | |
1555 | ||
1556 | list_updated = true; | |
1557 | } | |
1558 | } | |
1559 | ||
1560 | if (list_updated) | |
84de38c5 | 1561 | link_dirty(link); |
0d4ad91d AR |
1562 | |
1563 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1564 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1565 | if (r < 0) | |
1566 | return r; | |
1567 | ||
84de38c5 | 1568 | link_dirty(carrier); |
0d4ad91d AR |
1569 | } |
1570 | ||
1571 | return 0; | |
1572 | } | |
1573 | ||
1574 | static int link_new_carrier_maps(Link *link) { | |
1575 | int r; | |
1576 | ||
1577 | r = link_new_bound_by_list(link); | |
1578 | if (r < 0) | |
1579 | return r; | |
1580 | ||
1581 | r = link_handle_bound_by_list(link); | |
1582 | if (r < 0) | |
1583 | return r; | |
1584 | ||
1585 | r = link_new_bound_to_list(link); | |
1586 | if (r < 0) | |
1587 | return r; | |
1588 | ||
1589 | r = link_handle_bound_to_list(link); | |
1590 | if (r < 0) | |
1591 | return r; | |
1592 | ||
1593 | return 0; | |
1594 | } | |
1595 | ||
1596 | static void link_free_bound_to_list(Link *link) { | |
1597 | Link *bound_to; | |
1598 | Iterator i; | |
1599 | ||
1600 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
1601 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
1602 | ||
1603 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1604 | link_dirty(bound_to); |
0d4ad91d AR |
1605 | } |
1606 | ||
1607 | return; | |
1608 | } | |
1609 | ||
1610 | static void link_free_bound_by_list(Link *link) { | |
1611 | Link *bound_by; | |
1612 | Iterator i; | |
1613 | ||
1614 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
1615 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
1616 | ||
1617 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1618 | link_dirty(bound_by); |
0d4ad91d AR |
1619 | link_handle_bound_to_list(bound_by); |
1620 | } | |
1621 | } | |
1622 | ||
1623 | return; | |
1624 | } | |
1625 | ||
1626 | static void link_free_carrier_maps(Link *link) { | |
1627 | bool list_updated = false; | |
1628 | ||
1629 | assert(link); | |
1630 | ||
1631 | if (!hashmap_isempty(link->bound_to_links)) { | |
1632 | link_free_bound_to_list(link); | |
1633 | list_updated = true; | |
1634 | } | |
1635 | ||
1636 | if (!hashmap_isempty(link->bound_by_links)) { | |
1637 | link_free_bound_by_list(link); | |
1638 | list_updated = true; | |
1639 | } | |
1640 | ||
1641 | if (list_updated) | |
84de38c5 | 1642 | link_dirty(link); |
0d4ad91d AR |
1643 | |
1644 | return; | |
1645 | } | |
1646 | ||
1647 | void link_drop(Link *link) { | |
1648 | if (!link || link->state == LINK_STATE_LINGER) | |
1649 | return; | |
1650 | ||
1651 | link_set_state(link, LINK_STATE_LINGER); | |
1652 | ||
1653 | link_free_carrier_maps(link); | |
1654 | ||
6a7a4e4d | 1655 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1656 | |
84de38c5 | 1657 | (void)unlink(link->state_file); |
0d4ad91d AR |
1658 | link_unref(link); |
1659 | ||
1660 | return; | |
1661 | } | |
1662 | ||
3f265037 | 1663 | static int link_joined(Link *link) { |
f882c247 TG |
1664 | int r; |
1665 | ||
ef1ba606 | 1666 | assert(link); |
f5be5601 | 1667 | assert(link->network); |
dd3efc09 | 1668 | |
0d4ad91d AR |
1669 | if (!hashmap_isempty(link->bound_to_links)) { |
1670 | r = link_handle_bound_to_list(link); | |
1671 | if (r < 0) | |
1672 | return r; | |
1673 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1674 | r = link_up(link); |
1675 | if (r < 0) { | |
1676 | link_enter_failed(link); | |
1677 | return r; | |
1678 | } | |
ef1ba606 | 1679 | } |
f882c247 | 1680 | |
e1853b00 SS |
1681 | if(link->network->bridge) { |
1682 | r = link_set_bridge(link); | |
6a7a4e4d LP |
1683 | if (r < 0) |
1684 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
1685 | } |
1686 | ||
fb6730c4 | 1687 | return link_enter_set_addresses(link); |
02b59d57 TG |
1688 | } |
1689 | ||
62e2d5bb | 1690 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1691 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1692 | int r; |
1693 | ||
1746cf2a | 1694 | assert(link); |
ef1ba606 | 1695 | assert(link->network); |
02b59d57 | 1696 | |
52433f6b TG |
1697 | link->enslaving --; |
1698 | ||
5da8149f | 1699 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1700 | return 1; |
1701 | ||
1c4baffc | 1702 | r = sd_netlink_message_get_errno(m); |
856f962c | 1703 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 1704 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
1705 | link_enter_failed(link); |
1706 | return 1; | |
ba179154 | 1707 | } else |
6a7a4e4d | 1708 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 1709 | |
856f962c | 1710 | if (link->enslaving <= 0) |
3f265037 | 1711 | link_joined(link); |
02b59d57 TG |
1712 | |
1713 | return 1; | |
1714 | } | |
1715 | ||
3f265037 | 1716 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1717 | NetDev *netdev; |
672682a6 | 1718 | Iterator i; |
02b59d57 TG |
1719 | int r; |
1720 | ||
1721 | assert(link); | |
1722 | assert(link->network); | |
8434fd5c | 1723 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1724 | |
e331e246 | 1725 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 1726 | |
84de38c5 | 1727 | link_dirty(link); |
fe8db0c5 | 1728 | |
7951dea2 SS |
1729 | if (!link->network->bridge && |
1730 | !link->network->bond && | |
6a0a2f86 | 1731 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1732 | return link_joined(link); |
02b59d57 | 1733 | |
d9c67ea1 | 1734 | if (link->network->bond) { |
f2341e0a LP |
1735 | log_struct(LOG_DEBUG, |
1736 | LOG_LINK_INTERFACE(link), | |
1737 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1738 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
1739 | NULL); | |
1740 | ||
1741 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 1742 | if (r < 0) { |
f2341e0a LP |
1743 | log_struct_errno(LOG_WARNING, r, |
1744 | LOG_LINK_INTERFACE(link), | |
1745 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1746 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
1747 | NULL); | |
1748 | ||
52433f6b TG |
1749 | link_enter_failed(link); |
1750 | return r; | |
1751 | } | |
1752 | ||
0ad6148e MO |
1753 | link->enslaving ++; |
1754 | } | |
1755 | ||
d9c67ea1 | 1756 | if (link->network->bridge) { |
f2341e0a LP |
1757 | log_struct(LOG_DEBUG, |
1758 | LOG_LINK_INTERFACE(link), | |
1759 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1760 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
1761 | NULL); | |
1762 | ||
1763 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 1764 | if (r < 0) { |
f2341e0a LP |
1765 | log_struct_errno(LOG_WARNING, r, |
1766 | LOG_LINK_INTERFACE(link), | |
1767 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1768 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
1769 | NULL), | |
0ad6148e MO |
1770 | link_enter_failed(link); |
1771 | return r; | |
1772 | } | |
1773 | ||
52433f6b TG |
1774 | link->enslaving ++; |
1775 | } | |
1776 | ||
6a0a2f86 | 1777 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 1778 | |
f2341e0a LP |
1779 | log_struct(LOG_DEBUG, |
1780 | LOG_LINK_INTERFACE(link), | |
1781 | LOG_NETDEV_INTERFACE(netdev), | |
1782 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
1783 | NULL); | |
1784 | ||
1785 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 1786 | if (r < 0) { |
f2341e0a LP |
1787 | log_struct_errno(LOG_WARNING, r, |
1788 | LOG_LINK_INTERFACE(link), | |
1789 | LOG_NETDEV_INTERFACE(netdev), | |
1790 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
1791 | NULL); | |
326cb406 SS |
1792 | link_enter_failed(link); |
1793 | return r; | |
1794 | } | |
1795 | ||
326cb406 SS |
1796 | link->enslaving ++; |
1797 | } | |
1798 | ||
ef1ba606 TG |
1799 | return 0; |
1800 | } | |
1801 | ||
769d324c | 1802 | static int link_set_ipv4_forward(Link *link) { |
15dee3f0 | 1803 | const char *p = NULL, *v; |
5a8bcb67 LP |
1804 | int r; |
1805 | ||
15dee3f0 LP |
1806 | if (link->flags & IFF_LOOPBACK) |
1807 | return 0; | |
1808 | ||
8add5f79 NO |
1809 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1810 | return 0; | |
1811 | ||
63c372cb | 1812 | p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1813 | v = one_zero(link_ipv4_forward_enabled(link)); |
1814 | ||
4c1fc3e4 | 1815 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1816 | if (r < 0) { |
1817 | /* If the right value is set anyway, don't complain */ | |
1818 | if (verify_one_line_file(p, v) > 0) | |
1819 | return 0; | |
1820 | ||
43c6d5ab | 1821 | log_link_warning_errno(link, r, "Cannot configure IPv4 forwarding for interface %s: %m", link->ifname); |
15dee3f0 | 1822 | } |
43c6d5ab | 1823 | |
769d324c LP |
1824 | return 0; |
1825 | } | |
1826 | ||
1827 | static int link_set_ipv6_forward(Link *link) { | |
15dee3f0 | 1828 | const char *p = NULL, *v = NULL; |
769d324c LP |
1829 | int r; |
1830 | ||
fe027299 LP |
1831 | /* Make this a NOP if IPv6 is not available */ |
1832 | if (!socket_ipv6_is_supported()) | |
1833 | return 0; | |
1834 | ||
15dee3f0 LP |
1835 | if (link->flags & IFF_LOOPBACK) |
1836 | return 0; | |
1837 | ||
8add5f79 NO |
1838 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1839 | return 0; | |
1840 | ||
63c372cb | 1841 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1842 | v = one_zero(link_ipv6_forward_enabled(link)); |
1843 | ||
4c1fc3e4 | 1844 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1845 | if (r < 0) { |
1846 | /* If the right value is set anyway, don't complain */ | |
1847 | if (verify_one_line_file(p, v) > 0) | |
1848 | return 0; | |
1849 | ||
769d324c | 1850 | log_link_warning_errno(link, r, "Cannot configure IPv6 forwarding for interface: %m"); |
15dee3f0 | 1851 | } |
5a8bcb67 LP |
1852 | |
1853 | return 0; | |
1854 | } | |
1855 | ||
49092e22 | 1856 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 LP |
1857 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; |
1858 | IPv6PrivacyExtensions s; | |
49092e22 SS |
1859 | const char *p = NULL; |
1860 | int r; | |
1861 | ||
1862 | /* Make this a NOP if IPv6 is not available */ | |
1863 | if (!socket_ipv6_is_supported()) | |
1864 | return 0; | |
1865 | ||
1f0d9695 LP |
1866 | s = link_ipv6_privacy_extensions(link); |
1867 | if (s == _IPV6_PRIVACY_EXTENSIONS_INVALID) | |
49092e22 SS |
1868 | return 0; |
1869 | ||
1870 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
1871 | xsprintf(buf, "%u", link->network->ipv6_privacy_extensions); | |
1872 | ||
4c1fc3e4 | 1873 | r = write_string_file(p, buf, 0); |
1f0d9695 LP |
1874 | if (r < 0) { |
1875 | /* If the right value is set anyway, don't complain */ | |
1876 | if (verify_one_line_file(p, buf) > 0) | |
1877 | return 0; | |
1878 | ||
49092e22 | 1879 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
1f0d9695 | 1880 | } |
49092e22 SS |
1881 | |
1882 | return 0; | |
1883 | } | |
1884 | ||
4f2e437a SS |
1885 | static int link_set_ipv6_accept_ra(Link *link) { |
1886 | const char *p = NULL, *v = NULL; | |
4f2e437a SS |
1887 | int r; |
1888 | ||
1889 | /* Make this a NOP if IPv6 is not available */ | |
1890 | if (!socket_ipv6_is_supported()) | |
1891 | return 0; | |
1892 | ||
1893 | if (link->flags & IFF_LOOPBACK) | |
1894 | return 0; | |
1895 | ||
6a512301 GM |
1896 | /* If unset use system default (enabled if local forwarding is disabled. |
1897 | * disabled if local forwarding is enabled). | |
1898 | * If set, ignore or enforce RA independent of local forwarding state. | |
4f2e437a | 1899 | */ |
ebf98081 | 1900 | if (link->network->ipv6_accept_ra < 0) |
6a512301 GM |
1901 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ |
1902 | v = "1"; | |
ebf98081 | 1903 | else if (link->network->ipv6_accept_ra > 0) |
6a512301 GM |
1904 | /* "2" means accept RA even if ip_forward is enabled */ |
1905 | v = "2"; | |
ebf98081 | 1906 | else |
6a512301 GM |
1907 | /* "0" means ignore RA */ |
1908 | v = "0"; | |
ebf98081 | 1909 | |
4f2e437a | 1910 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); |
4f2e437a SS |
1911 | |
1912 | r = write_string_file(p, v, 0); | |
1913 | if (r < 0) { | |
1914 | /* If the right value is set anyway, don't complain */ | |
1915 | if (verify_one_line_file(p, v) > 0) | |
1916 | return 0; | |
1917 | ||
1918 | log_link_warning_errno(link, r, "Cannot configure IPv6 accept_ra for interface: %m"); | |
1919 | } | |
1920 | ||
1921 | return 0; | |
1922 | } | |
1923 | ||
8749cbcd SS |
1924 | static int link_set_ipv6_dad_transmits(Link *link) { |
1925 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; | |
1926 | const char *p = NULL; | |
1927 | int r; | |
1928 | ||
1929 | /* Make this a NOP if IPv6 is not available */ | |
1930 | if (!socket_ipv6_is_supported()) | |
1931 | return 0; | |
1932 | ||
1933 | if (link->flags & IFF_LOOPBACK) | |
1934 | return 0; | |
1935 | ||
1936 | if (link->network->ipv6_dad_transmits < 0) | |
1937 | return 0; | |
1938 | ||
1939 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); | |
1940 | ||
1941 | xsprintf(buf, "%u", link->network->ipv6_dad_transmits); | |
1942 | ||
1943 | r = write_string_file(p, buf, 0); | |
1944 | if (r < 0) { | |
1945 | /* If the right value is set anyway, don't complain */ | |
1946 | if (verify_one_line_file(p, buf) > 0) | |
1947 | return 0; | |
1948 | ||
1949 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); | |
1950 | } | |
1951 | ||
1952 | return 0; | |
1953 | } | |
1954 | ||
b69c3180 SS |
1955 | static int link_set_ipv6_hop_limit(Link *link) { |
1956 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; | |
1957 | const char *p = NULL; | |
1958 | int r; | |
1959 | ||
1960 | /* Make this a NOP if IPv6 is not available */ | |
1961 | if (!socket_ipv6_is_supported()) | |
1962 | return 0; | |
1963 | ||
1964 | if (link->flags & IFF_LOOPBACK) | |
1965 | return 0; | |
1966 | ||
1967 | if (link->network->ipv6_hop_limit < 0) | |
1968 | return 0; | |
1969 | ||
1970 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/hop_limit"); | |
1971 | ||
1972 | xsprintf(buf, "%u", link->network->ipv6_hop_limit); | |
1973 | ||
1974 | r = write_string_file(p, buf, 0); | |
1975 | if (r < 0) { | |
1976 | /* If the right value is set anyway, don't complain */ | |
1977 | if (verify_one_line_file(p, buf) > 0) | |
1978 | return 0; | |
1979 | ||
1980 | log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m"); | |
1981 | } | |
1982 | ||
1983 | return 0; | |
1984 | } | |
1985 | ||
a748b692 | 1986 | static int link_configure(Link *link) { |
02b59d57 TG |
1987 | int r; |
1988 | ||
ef1ba606 | 1989 | assert(link); |
b22d8a00 | 1990 | assert(link->network); |
8434fd5c | 1991 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 1992 | |
b98b483b AR |
1993 | r = link_set_bridge_fdb(link); |
1994 | if (r < 0) | |
1995 | return r; | |
1996 | ||
769d324c LP |
1997 | r = link_set_ipv4_forward(link); |
1998 | if (r < 0) | |
1999 | return r; | |
2000 | ||
2001 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
2002 | if (r < 0) |
2003 | return r; | |
2004 | ||
49092e22 SS |
2005 | r = link_set_ipv6_privacy_extensions(link); |
2006 | if (r < 0) | |
2007 | return r; | |
2008 | ||
4f2e437a SS |
2009 | r = link_set_ipv6_accept_ra(link); |
2010 | if (r < 0) | |
2011 | return r; | |
2012 | ||
8749cbcd SS |
2013 | r = link_set_ipv6_dad_transmits(link); |
2014 | if (r < 0) | |
2015 | return r; | |
b69c3180 SS |
2016 | |
2017 | r = link_set_ipv6_hop_limit(link); | |
2018 | if (r < 0) | |
2019 | return r; | |
8749cbcd | 2020 | |
78c958f8 | 2021 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 2022 | r = ipv4ll_configure(link); |
eb34d4af TG |
2023 | if (r < 0) |
2024 | return r; | |
2025 | } | |
2026 | ||
78c958f8 | 2027 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 2028 | r = dhcp4_configure(link); |
eb34d4af TG |
2029 | if (r < 0) |
2030 | return r; | |
eb34d4af TG |
2031 | } |
2032 | ||
78c958f8 | 2033 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
2034 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
2035 | if (r < 0) | |
2036 | return r; | |
2037 | ||
2038 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
2039 | if (r < 0) | |
2040 | return r; | |
dd43110f TG |
2041 | } |
2042 | ||
78c958f8 | 2043 | if (link_dhcp6_enabled(link)) { |
de1e9928 | 2044 | r = ndisc_configure(link); |
4138fb2c PF |
2045 | if (r < 0) |
2046 | return r; | |
2047 | } | |
2048 | ||
ce43e484 SS |
2049 | if (link_lldp_enabled(link)) { |
2050 | r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp); | |
2051 | if (r < 0) | |
2052 | return r; | |
2053 | ||
2054 | r = sd_lldp_attach_event(link->lldp, NULL, 0); | |
2055 | if (r < 0) | |
2056 | return r; | |
49699bac SS |
2057 | |
2058 | r = sd_lldp_set_callback(link->lldp, | |
2059 | lldp_handler, link); | |
2060 | if (r < 0) | |
2061 | return r; | |
ce43e484 SS |
2062 | } |
2063 | ||
a61bb41c | 2064 | if (link_has_carrier(link)) { |
1e9be60b TG |
2065 | r = link_acquire_conf(link); |
2066 | if (r < 0) | |
2067 | return r; | |
cc544d5f | 2068 | } |
1e9be60b | 2069 | |
3f265037 | 2070 | return link_enter_join_netdev(link); |
505f8da7 TG |
2071 | } |
2072 | ||
1c4baffc | 2073 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 2074 | void *userdata) { |
5da8149f | 2075 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 2076 | Network *network; |
505f8da7 TG |
2077 | int r; |
2078 | ||
2079 | assert(link); | |
2080 | assert(link->ifname); | |
2081 | assert(link->manager); | |
2082 | ||
8434fd5c | 2083 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 2084 | return 1; |
505f8da7 | 2085 | |
6a7a4e4d | 2086 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 2087 | |
0d4ad91d AR |
2088 | r = link_new_bound_by_list(link); |
2089 | if (r < 0) | |
2090 | return r; | |
2091 | ||
2092 | r = link_handle_bound_by_list(link); | |
2093 | if (r < 0) | |
2094 | return r; | |
2095 | ||
c4a03a56 TG |
2096 | if (!link->network) { |
2097 | r = network_get(link->manager, link->udev_device, link->ifname, | |
2098 | &link->mac, &network); | |
2099 | if (r == -ENOENT) { | |
2100 | link_enter_unmanaged(link); | |
2101 | return 1; | |
2102 | } else if (r < 0) | |
2103 | return r; | |
505f8da7 | 2104 | |
c4a03a56 TG |
2105 | if (link->flags & IFF_LOOPBACK) { |
2106 | if (network->link_local != ADDRESS_FAMILY_NO) | |
2107 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 2108 | |
c4a03a56 TG |
2109 | if (network->dhcp != ADDRESS_FAMILY_NO) |
2110 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 2111 | |
c4a03a56 TG |
2112 | if (network->dhcp_server) |
2113 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
2114 | } | |
bd2efe92 | 2115 | |
c4a03a56 TG |
2116 | r = network_apply(link->manager, network, link); |
2117 | if (r < 0) | |
2118 | return r; | |
2119 | } | |
505f8da7 | 2120 | |
0d4ad91d AR |
2121 | r = link_new_bound_to_list(link); |
2122 | if (r < 0) | |
2123 | return r; | |
2124 | ||
a748b692 TG |
2125 | r = link_configure(link); |
2126 | if (r < 0) | |
2127 | return r; | |
2128 | ||
5da8149f | 2129 | return 1; |
505f8da7 TG |
2130 | } |
2131 | ||
4f561e8e | 2132 | int link_initialized(Link *link, struct udev_device *device) { |
1c4baffc | 2133 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f561e8e TG |
2134 | int r; |
2135 | ||
2136 | assert(link); | |
2137 | assert(link->manager); | |
2138 | assert(link->manager->rtnl); | |
2139 | assert(device); | |
2140 | ||
8434fd5c | 2141 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2142 | return 0; |
2143 | ||
679b3605 TG |
2144 | if (link->udev_device) |
2145 | return 0; | |
2146 | ||
79008bdd | 2147 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
2148 | |
2149 | link->udev_device = udev_device_ref(device); | |
2150 | ||
3c9b8860 TG |
2151 | /* udev has initialized the link, but we don't know if we have yet |
2152 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2153 | * when it returns we know that the pending NEWLINKs have already been | |
2154 | * processed and that we are up-to-date */ | |
4f561e8e | 2155 | |
3c9b8860 TG |
2156 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2157 | link->ifindex); | |
4f561e8e TG |
2158 | if (r < 0) |
2159 | return r; | |
2160 | ||
1c4baffc | 2161 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 2162 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
2163 | if (r < 0) |
2164 | return r; | |
2165 | ||
5da8149f TG |
2166 | link_ref(link); |
2167 | ||
4f561e8e TG |
2168 | return 0; |
2169 | } | |
2170 | ||
c4a03a56 | 2171 | static int link_load(Link *link) { |
0bc70f1d TG |
2172 | _cleanup_free_ char *network_file = NULL, |
2173 | *addresses = NULL, | |
f703cc2c | 2174 | *routes = NULL, |
0bc70f1d TG |
2175 | *dhcp4_address = NULL, |
2176 | *ipv4ll_address = NULL; | |
2177 | union in_addr_union address; | |
f703cc2c | 2178 | union in_addr_union route_dst; |
c598ac76 | 2179 | const char *p; |
c4a03a56 TG |
2180 | int r; |
2181 | ||
2182 | assert(link); | |
2183 | ||
2184 | r = parse_env_file(link->state_file, NEWLINE, | |
2185 | "NETWORK_FILE", &network_file, | |
2186 | "ADDRESSES", &addresses, | |
f703cc2c | 2187 | "ROUTES", &routes, |
0bc70f1d TG |
2188 | "DHCP4_ADDRESS", &dhcp4_address, |
2189 | "IPV4LL_ADDRESS", &ipv4ll_address, | |
c4a03a56 TG |
2190 | NULL); |
2191 | if (r < 0 && r != -ENOENT) | |
2192 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
2193 | ||
2194 | if (network_file) { | |
2195 | Network *network; | |
2196 | char *suffix; | |
2197 | ||
2198 | /* drop suffix */ | |
2199 | suffix = strrchr(network_file, '.'); | |
2200 | if (!suffix) { | |
2201 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
2202 | goto network_file_fail; | |
2203 | } | |
2204 | *suffix = '\0'; | |
2205 | ||
2206 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
2207 | if (r < 0) { | |
2208 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
2209 | goto network_file_fail; | |
2210 | } | |
2211 | ||
2212 | r = network_apply(link->manager, network, link); | |
2213 | if (r < 0) | |
2214 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
2215 | } | |
2216 | ||
2217 | network_file_fail: | |
2218 | ||
2219 | if (addresses) { | |
c598ac76 | 2220 | p = addresses; |
c4a03a56 | 2221 | |
c598ac76 TG |
2222 | for (;;) { |
2223 | _cleanup_free_ char *address_str = NULL; | |
c4a03a56 TG |
2224 | char *prefixlen_str; |
2225 | int family; | |
2226 | unsigned char prefixlen; | |
c4a03a56 | 2227 | |
c598ac76 TG |
2228 | r = extract_first_word(&p, &address_str, NULL, 0); |
2229 | if (r < 0) { | |
2230 | log_link_debug_errno(link, r, "Failed to extract next address string: %m"); | |
2231 | continue; | |
2232 | } if (r == 0) | |
2233 | break; | |
2234 | ||
2235 | prefixlen_str = strchr(address_str, '/'); | |
c4a03a56 | 2236 | if (!prefixlen_str) { |
c598ac76 | 2237 | log_link_debug(link, "Failed to parse address and prefix length %s", address_str); |
c4a03a56 TG |
2238 | continue; |
2239 | } | |
2240 | ||
2241 | *prefixlen_str ++ = '\0'; | |
2242 | ||
2243 | r = sscanf(prefixlen_str, "%hhu", &prefixlen); | |
2244 | if (r != 1) { | |
2245 | log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str); | |
2246 | continue; | |
2247 | } | |
2248 | ||
c598ac76 | 2249 | r = in_addr_from_string_auto(address_str, &family, &address); |
c4a03a56 | 2250 | if (r < 0) { |
c598ac76 | 2251 | log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str); |
c4a03a56 TG |
2252 | continue; |
2253 | } | |
2254 | ||
2255 | r = address_add(link, family, &address, prefixlen, NULL); | |
2256 | if (r < 0) | |
2257 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
2258 | } | |
2259 | } | |
2260 | ||
f703cc2c | 2261 | if (routes) { |
c598ac76 | 2262 | for (;;) { |
f833694d | 2263 | Route *route; |
c598ac76 | 2264 | _cleanup_free_ char *route_str = NULL; |
f833694d TG |
2265 | _cleanup_event_source_unref_ sd_event_source *expire = NULL; |
2266 | usec_t lifetime; | |
f703cc2c TG |
2267 | char *prefixlen_str; |
2268 | int family; | |
2269 | unsigned char prefixlen, tos, table; | |
2270 | uint32_t priority; | |
2271 | ||
c598ac76 TG |
2272 | r = extract_first_word(&p, &route_str, NULL, 0); |
2273 | if (r < 0) { | |
2274 | log_link_debug_errno(link, r, "Failed to extract next route string: %m"); | |
2275 | continue; | |
2276 | } if (r == 0) | |
2277 | break; | |
2278 | ||
2279 | prefixlen_str = strchr(route_str, '/'); | |
f703cc2c | 2280 | if (!prefixlen_str) { |
c598ac76 | 2281 | log_link_debug(link, "Failed to parse route %s", route_str); |
f703cc2c TG |
2282 | continue; |
2283 | } | |
2284 | ||
2285 | *prefixlen_str ++ = '\0'; | |
2286 | ||
f833694d TG |
2287 | r = sscanf(prefixlen_str, "%hhu/%hhu/%"SCNu32"/%hhu/"USEC_FMT, &prefixlen, &tos, &priority, &table, &lifetime); |
2288 | if (r != 5) { | |
2289 | log_link_debug(link, | |
2290 | "Failed to parse destination prefix length, tos, priority, table or expiration %s", | |
2291 | prefixlen_str); | |
f703cc2c TG |
2292 | continue; |
2293 | } | |
2294 | ||
c598ac76 | 2295 | r = in_addr_from_string_auto(route_str, &family, &route_dst); |
f703cc2c | 2296 | if (r < 0) { |
c598ac76 | 2297 | log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str); |
f703cc2c TG |
2298 | continue; |
2299 | } | |
2300 | ||
f833694d | 2301 | r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route); |
f703cc2c TG |
2302 | if (r < 0) |
2303 | return log_link_error_errno(link, r, "Failed to add route: %m"); | |
f833694d TG |
2304 | |
2305 | if (lifetime != USEC_INFINITY) { | |
2306 | r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), lifetime, | |
2307 | 0, route_expire_handler, route); | |
2308 | if (r < 0) | |
2309 | log_link_warning_errno(link, r, "Could not arm route expiration handler: %m"); | |
2310 | } | |
2311 | ||
2312 | route->lifetime = lifetime; | |
2313 | sd_event_source_unref(route->expire); | |
2314 | route->expire = expire; | |
2315 | expire = NULL; | |
f703cc2c TG |
2316 | } |
2317 | } | |
2318 | ||
0bc70f1d TG |
2319 | if (dhcp4_address) { |
2320 | r = in_addr_from_string(AF_INET, dhcp4_address, &address); | |
2321 | if (r < 0) { | |
2322 | log_link_debug_errno(link, r, "Falied to parse DHCPv4 address %s: %m", dhcp4_address); | |
2323 | goto dhcp4_address_fail; | |
2324 | } | |
2325 | ||
2326 | r = sd_dhcp_client_new(&link->dhcp_client); | |
2327 | if (r < 0) | |
2328 | return log_link_error_errno(link, r, "Falied to create DHCPv4 client: %m"); | |
2329 | ||
2330 | r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in); | |
2331 | if (r < 0) | |
2332 | return log_link_error_errno(link, r, "Falied to set inital DHCPv4 address %s: %m", dhcp4_address); | |
2333 | } | |
2334 | ||
2335 | dhcp4_address_fail: | |
2336 | ||
2337 | if (ipv4ll_address) { | |
2338 | r = in_addr_from_string(AF_INET, ipv4ll_address, &address); | |
2339 | if (r < 0) { | |
2340 | log_link_debug_errno(link, r, "Falied to parse IPv4LL address %s: %m", ipv4ll_address); | |
2341 | goto ipv4ll_address_fail; | |
2342 | } | |
2343 | ||
2344 | r = sd_ipv4ll_new(&link->ipv4ll); | |
2345 | if (r < 0) | |
2346 | return log_link_error_errno(link, r, "Falied to create IPv4LL client: %m"); | |
2347 | ||
2348 | r = sd_ipv4ll_set_address(link->ipv4ll, &address.in); | |
2349 | if (r < 0) | |
2350 | return log_link_error_errno(link, r, "Falied to set inital IPv4LL address %s: %m", ipv4ll_address); | |
2351 | } | |
2352 | ||
2353 | ipv4ll_address_fail: | |
2354 | ||
c4a03a56 TG |
2355 | return 0; |
2356 | } | |
2357 | ||
1c4baffc | 2358 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
2359 | Link *link; |
2360 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
2361 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
2362 | int r; | |
2363 | ||
2364 | assert(m); | |
fbbeb65a | 2365 | assert(m->rtnl); |
505f8da7 TG |
2366 | assert(message); |
2367 | assert(ret); | |
2368 | ||
2369 | r = link_new(m, message, ret); | |
2370 | if (r < 0) | |
2371 | return r; | |
2372 | ||
2373 | link = *ret; | |
2374 | ||
6a7a4e4d | 2375 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2376 | |
c4a03a56 TG |
2377 | r = link_load(link); |
2378 | if (r < 0) | |
2379 | return r; | |
2380 | ||
75f86906 | 2381 | if (detect_container() <= 0) { |
505f8da7 | 2382 | /* not in a container, udev will be around */ |
ae06ab10 | 2383 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 2384 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
5c416fc4 TG |
2385 | if (!device) { |
2386 | r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
2387 | goto failed; | |
2388 | } | |
505f8da7 | 2389 | |
3c4cb064 | 2390 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 2391 | /* not yet ready */ |
79008bdd | 2392 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2393 | return 0; |
3c4cb064 | 2394 | } |
505f8da7 | 2395 | |
4f561e8e TG |
2396 | r = link_initialized(link, device); |
2397 | if (r < 0) | |
5c416fc4 | 2398 | goto failed; |
4f561e8e | 2399 | } else { |
5da8149f TG |
2400 | /* we are calling a callback directly, so must take a ref */ |
2401 | link_ref(link); | |
2402 | ||
4f561e8e TG |
2403 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
2404 | if (r < 0) | |
5c416fc4 | 2405 | goto failed; |
4f561e8e | 2406 | } |
505f8da7 | 2407 | |
a748b692 | 2408 | return 0; |
5c416fc4 TG |
2409 | failed: |
2410 | link_enter_failed(link); | |
2411 | return r; | |
a748b692 TG |
2412 | } |
2413 | ||
9c0a72f9 TG |
2414 | static int link_carrier_gained(Link *link) { |
2415 | int r; | |
2416 | ||
2417 | assert(link); | |
2418 | ||
2419 | if (link->network) { | |
2420 | r = link_acquire_conf(link); | |
2421 | if (r < 0) { | |
2422 | link_enter_failed(link); | |
2423 | return r; | |
2424 | } | |
2425 | } | |
2426 | ||
0d4ad91d AR |
2427 | r = link_handle_bound_by_list(link); |
2428 | if (r < 0) | |
2429 | return r; | |
2430 | ||
9c0a72f9 TG |
2431 | return 0; |
2432 | } | |
2433 | ||
2434 | static int link_carrier_lost(Link *link) { | |
2435 | int r; | |
2436 | ||
2437 | assert(link); | |
2438 | ||
2439 | r = link_stop_clients(link); | |
2440 | if (r < 0) { | |
2441 | link_enter_failed(link); | |
2442 | return r; | |
2443 | } | |
2444 | ||
0d4ad91d AR |
2445 | r = link_handle_bound_by_list(link); |
2446 | if (r < 0) | |
2447 | return r; | |
2448 | ||
9c0a72f9 TG |
2449 | return 0; |
2450 | } | |
2451 | ||
2452 | int link_carrier_reset(Link *link) { | |
2453 | int r; | |
2454 | ||
2455 | assert(link); | |
2456 | ||
2457 | if (link_has_carrier(link)) { | |
2458 | r = link_carrier_lost(link); | |
2459 | if (r < 0) | |
2460 | return r; | |
2461 | ||
2462 | r = link_carrier_gained(link); | |
2463 | if (r < 0) | |
2464 | return r; | |
2465 | ||
6a7a4e4d | 2466 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2467 | } |
2468 | ||
2469 | return 0; | |
2470 | } | |
2471 | ||
2472 | ||
1c4baffc | 2473 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 2474 | struct ether_addr mac; |
ca4e095a | 2475 | const char *ifname; |
afe7fd56 | 2476 | uint32_t mtu; |
a61bb41c | 2477 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
2478 | int r; |
2479 | ||
dd3efc09 | 2480 | assert(link); |
b8941f74 | 2481 | assert(link->ifname); |
22936833 TG |
2482 | assert(m); |
2483 | ||
7619683b TG |
2484 | if (link->state == LINK_STATE_LINGER) { |
2485 | link_ref(link); | |
6a7a4e4d | 2486 | log_link_info(link, "Link readded"); |
e331e246 | 2487 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
2488 | |
2489 | r = link_new_carrier_maps(link); | |
2490 | if (r < 0) | |
2491 | return r; | |
7619683b TG |
2492 | } |
2493 | ||
1c4baffc | 2494 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2495 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 2496 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 2497 | |
0d4ad91d AR |
2498 | link_free_carrier_maps(link); |
2499 | ||
2fc09a9c DM |
2500 | r = free_and_strdup(&link->ifname, ifname); |
2501 | if (r < 0) | |
2502 | return r; | |
0d4ad91d AR |
2503 | |
2504 | r = link_new_carrier_maps(link); | |
2505 | if (r < 0) | |
2506 | return r; | |
b8941f74 TG |
2507 | } |
2508 | ||
1c4baffc | 2509 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2510 | if (r >= 0 && mtu > 0) { |
2511 | link->mtu = mtu; | |
2512 | if (!link->original_mtu) { | |
2513 | link->original_mtu = mtu; | |
6a7a4e4d | 2514 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2515 | } |
2516 | ||
2517 | if (link->dhcp_client) { | |
3c9b8860 TG |
2518 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2519 | link->mtu); | |
afe7fd56 | 2520 | if (r < 0) { |
6a7a4e4d | 2521 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
2522 | return r; |
2523 | } | |
2524 | } | |
9842de0d | 2525 | } |
69629de9 | 2526 | |
e9189a1f TG |
2527 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2528 | set, simply ignore them. */ | |
1c4baffc | 2529 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2530 | if (r >= 0) { |
3c9b8860 TG |
2531 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2532 | ETH_ALEN)) { | |
c49b33ac | 2533 | |
3c9b8860 TG |
2534 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2535 | ETH_ALEN); | |
c49b33ac | 2536 | |
79008bdd | 2537 | log_link_debug(link, "MAC address: " |
20861203 TG |
2538 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
2539 | mac.ether_addr_octet[0], | |
2540 | mac.ether_addr_octet[1], | |
2541 | mac.ether_addr_octet[2], | |
2542 | mac.ether_addr_octet[3], | |
2543 | mac.ether_addr_octet[4], | |
2544 | mac.ether_addr_octet[5]); | |
c49b33ac | 2545 | |
20861203 TG |
2546 | if (link->ipv4ll) { |
2547 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
2548 | if (r < 0) |
2549 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 2550 | } |
c49b33ac | 2551 | |
20861203 | 2552 | if (link->dhcp_client) { |
3c9b8860 | 2553 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
2554 | (const uint8_t *) &link->mac, |
2555 | sizeof (link->mac), | |
2556 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2557 | if (r < 0) |
2558 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
c49b33ac | 2559 | } |
4138fb2c PF |
2560 | |
2561 | if (link->dhcp6_client) { | |
2562 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
2563 | (const uint8_t *) &link->mac, |
2564 | sizeof (link->mac), | |
2565 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2566 | if (r < 0) |
2567 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
4138fb2c | 2568 | } |
c49b33ac | 2569 | } |
4f882b2a TG |
2570 | } |
2571 | ||
a61bb41c TG |
2572 | had_carrier = link_has_carrier(link); |
2573 | ||
2574 | r = link_update_flags(link, m); | |
2575 | if (r < 0) | |
2576 | return r; | |
2577 | ||
2578 | carrier_gained = !had_carrier && link_has_carrier(link); | |
2579 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2580 | ||
2581 | if (carrier_gained) { | |
6a7a4e4d | 2582 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2583 | |
9c0a72f9 TG |
2584 | r = link_carrier_gained(link); |
2585 | if (r < 0) | |
2586 | return r; | |
a61bb41c | 2587 | } else if (carrier_lost) { |
6a7a4e4d | 2588 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2589 | |
9c0a72f9 TG |
2590 | r = link_carrier_lost(link); |
2591 | if (r < 0) | |
a61bb41c | 2592 | return r; |
9c0a72f9 | 2593 | |
a61bb41c TG |
2594 | } |
2595 | ||
2596 | return 0; | |
dd3efc09 | 2597 | } |
fe8db0c5 TG |
2598 | |
2599 | int link_save(Link *link) { | |
68a8723c | 2600 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2601 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2602 | const char *admin_state, *oper_state; |
e7780c8d | 2603 | Address *a; |
c1eb9872 | 2604 | Route *route; |
e7780c8d | 2605 | Iterator i; |
fe8db0c5 TG |
2606 | int r; |
2607 | ||
2608 | assert(link); | |
2609 | assert(link->state_file); | |
68a8723c | 2610 | assert(link->lease_file); |
bbf7c048 TG |
2611 | assert(link->manager); |
2612 | ||
370e9930 TG |
2613 | if (link->state == LINK_STATE_LINGER) { |
2614 | unlink(link->state_file); | |
2615 | return 0; | |
2616 | } | |
2617 | ||
deb2e523 TG |
2618 | admin_state = link_state_to_string(link->state); |
2619 | assert(admin_state); | |
2620 | ||
e375dcde TG |
2621 | oper_state = link_operstate_to_string(link->operstate); |
2622 | assert(oper_state); | |
deb2e523 | 2623 | |
fe8db0c5 TG |
2624 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2625 | if (r < 0) | |
6a7a4e4d | 2626 | goto fail; |
fe8db0c5 TG |
2627 | |
2628 | fchmod(fileno(f), 0644); | |
2629 | ||
2630 | fprintf(f, | |
2631 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2632 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
2633 | "OPER_STATE=%s\n", |
2634 | admin_state, oper_state); | |
fe8db0c5 | 2635 | |
bcb7a07e | 2636 | if (link->network) { |
ea352b40 LP |
2637 | char **address, **domain; |
2638 | bool space; | |
07bdc70d PF |
2639 | sd_dhcp6_lease *dhcp6_lease = NULL; |
2640 | ||
2641 | if (link->dhcp6_client) { | |
2642 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, | |
2643 | &dhcp6_lease); | |
2644 | if (r < 0) | |
2645 | log_link_debug(link, "No DHCPv6 lease"); | |
2646 | } | |
b0e39c82 | 2647 | |
adc5b2e2 TG |
2648 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2649 | ||
b0e39c82 | 2650 | fputs("DNS=", f); |
ea352b40 LP |
2651 | space = false; |
2652 | STRV_FOREACH(address, link->network->dns) { | |
2653 | if (space) | |
2654 | fputc(' ', f); | |
2655 | fputs(*address, f); | |
2656 | space = true; | |
2657 | } | |
d5314fff | 2658 | |
b0e39c82 TG |
2659 | if (link->network->dhcp_dns && |
2660 | link->dhcp_lease) { | |
2661 | const struct in_addr *addresses; | |
2662 | ||
2663 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
2664 | if (r > 0) { | |
ea352b40 LP |
2665 | if (space) |
2666 | fputc(' ', f); | |
b0e39c82 | 2667 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2668 | space = true; |
2669 | } | |
2670 | } | |
2671 | ||
2672 | if (link->network->dhcp_dns && dhcp6_lease) { | |
2673 | struct in6_addr *in6_addrs; | |
2674 | ||
2675 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
2676 | if (r > 0) { | |
2677 | if (space) | |
2678 | fputc(' ', f); | |
2679 | serialize_in6_addrs(f, in6_addrs, r); | |
b0e39c82 TG |
2680 | } |
2681 | } | |
2682 | ||
2ce40956 | 2683 | fputc('\n', f); |
b0e39c82 | 2684 | |
2ce40956 | 2685 | fputs("NTP=", f); |
ea352b40 LP |
2686 | space = false; |
2687 | STRV_FOREACH(address, link->network->ntp) { | |
2688 | if (space) | |
2689 | fputc(' ', f); | |
2690 | fputs(*address, f); | |
2691 | space = true; | |
2692 | } | |
d5314fff | 2693 | |
b0e39c82 TG |
2694 | if (link->network->dhcp_ntp && |
2695 | link->dhcp_lease) { | |
2696 | const struct in_addr *addresses; | |
2697 | ||
2698 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
2699 | if (r > 0) { | |
ea352b40 LP |
2700 | if (space) |
2701 | fputc(' ', f); | |
b0e39c82 | 2702 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2703 | space = true; |
2704 | } | |
2705 | } | |
2706 | ||
2707 | if (link->network->dhcp_ntp && dhcp6_lease) { | |
2708 | struct in6_addr *in6_addrs; | |
2709 | char **hosts; | |
2710 | char **hostname; | |
2711 | ||
2712 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
2713 | &in6_addrs); | |
2714 | if (r > 0) { | |
2715 | if (space) | |
2716 | fputc(' ', f); | |
2717 | serialize_in6_addrs(f, in6_addrs, r); | |
2718 | space = true; | |
2719 | } | |
2720 | ||
2721 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
2722 | if (r > 0) { | |
2723 | STRV_FOREACH(hostname, hosts) { | |
2724 | if (space) | |
2725 | fputc(' ', f); | |
2726 | fputs(*hostname, f); | |
2727 | space = true; | |
2728 | } | |
b0e39c82 TG |
2729 | } |
2730 | } | |
2731 | ||
2ce40956 | 2732 | fputc('\n', f); |
bd8f6538 | 2733 | |
2ce40956 | 2734 | fputs("DOMAINS=", f); |
ea352b40 LP |
2735 | space = false; |
2736 | STRV_FOREACH(domain, link->network->domains) { | |
2737 | if (space) | |
2738 | fputc(' ', f); | |
2739 | fputs(*domain, f); | |
2740 | space = true; | |
2741 | } | |
d5314fff | 2742 | |
ad0734e8 | 2743 | if (link->network->dhcp_domains && |
9b4d1882 TG |
2744 | link->dhcp_lease) { |
2745 | const char *domainname; | |
2746 | ||
2747 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
6192b846 | 2748 | if (r >= 0) { |
ea352b40 LP |
2749 | if (space) |
2750 | fputc(' ', f); | |
6192b846 | 2751 | fputs(domainname, f); |
07bdc70d PF |
2752 | space = true; |
2753 | } | |
2754 | } | |
2755 | ||
2756 | if (link->network->dhcp_domains && dhcp6_lease) { | |
2757 | char **domains; | |
2758 | ||
2759 | r = sd_dhcp6_lease_get_domains(dhcp6_lease, &domains); | |
2760 | if (r >= 0) { | |
2761 | STRV_FOREACH(domain, domains) { | |
2762 | if (space) | |
2763 | fputc(' ', f); | |
2764 | fputs(*domain, f); | |
2765 | space = true; | |
2766 | } | |
6192b846 | 2767 | } |
9b4d1882 TG |
2768 | } |
2769 | ||
2ce40956 | 2770 | fputc('\n', f); |
6192b846 | 2771 | |
67272d15 TG |
2772 | fprintf(f, "WILDCARD_DOMAIN=%s\n", |
2773 | yes_no(link->network->wildcard_domain)); | |
2774 | ||
3c9b8860 | 2775 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 2776 | resolve_support_to_string(link->network->llmnr)); |
e7780c8d | 2777 | |
2ce40956 | 2778 | fputs("ADDRESSES=", f); |
e7780c8d TG |
2779 | space = false; |
2780 | SET_FOREACH(a, link->addresses, i) { | |
2781 | _cleanup_free_ char *address_str = NULL; | |
2782 | ||
2783 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
2784 | if (r < 0) | |
2785 | goto fail; | |
2786 | ||
e7780c8d TG |
2787 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
2788 | space = true; | |
2789 | } | |
2790 | ||
2ce40956 | 2791 | fputc('\n', f); |
c1eb9872 TG |
2792 | |
2793 | fputs("ROUTES=", f); | |
2794 | space = false; | |
2795 | SET_FOREACH(route, link->routes, i) { | |
2796 | _cleanup_free_ char *route_str = NULL; | |
2797 | ||
2798 | r = in_addr_to_string(route->family, &route->dst, &route_str); | |
2799 | if (r < 0) | |
2800 | goto fail; | |
2801 | ||
f833694d TG |
2802 | fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%hhu/"USEC_FMT, space ? " " : "", route_str, |
2803 | route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime); | |
c1eb9872 TG |
2804 | space = true; |
2805 | } | |
2806 | ||
2807 | fputc('\n', f); | |
bcb7a07e | 2808 | } |
7374f9d8 | 2809 | |
0d4ad91d AR |
2810 | if (!hashmap_isempty(link->bound_to_links)) { |
2811 | Link *carrier; | |
0d4ad91d AR |
2812 | bool space = false; |
2813 | ||
2814 | fputs("CARRIER_BOUND_TO=", f); | |
2815 | HASHMAP_FOREACH(carrier, link->bound_to_links, i) { | |
2816 | if (space) | |
2817 | fputc(' ', f); | |
2818 | fputs(carrier->ifname, f); | |
2819 | space = true; | |
2820 | } | |
2821 | ||
2ce40956 | 2822 | fputc('\n', f); |
0d4ad91d AR |
2823 | } |
2824 | ||
2825 | if (!hashmap_isempty(link->bound_by_links)) { | |
2826 | Link *carrier; | |
0d4ad91d AR |
2827 | bool space = false; |
2828 | ||
2829 | fputs("CARRIER_BOUND_BY=", f); | |
0d4ad91d AR |
2830 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
2831 | if (space) | |
2832 | fputc(' ', f); | |
2833 | fputs(carrier->ifname, f); | |
2834 | space = true; | |
2835 | } | |
2836 | ||
2ce40956 | 2837 | fputc('\n', f); |
0d4ad91d AR |
2838 | } |
2839 | ||
8eb9058d | 2840 | if (link->dhcp_lease) { |
0bc70f1d | 2841 | struct in_addr address; |
8eb9058d LP |
2842 | const char *tz = NULL; |
2843 | ||
0bc70f1d TG |
2844 | assert(link->network); |
2845 | ||
8eb9058d LP |
2846 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); |
2847 | if (r >= 0) | |
2848 | fprintf(f, "TIMEZONE=%s\n", tz); | |
8eb9058d | 2849 | |
0bc70f1d TG |
2850 | r = sd_dhcp_lease_get_address(link->dhcp_lease, &address); |
2851 | if (r >= 0) { | |
2852 | fputs("DHCP4_ADDRESS=", f); | |
2853 | serialize_in_addrs(f, &address, 1); | |
2854 | fputc('\n', f); | |
2855 | } | |
d9876a52 | 2856 | |
bd91b83e | 2857 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 2858 | if (r < 0) |
c2d6bd61 | 2859 | goto fail; |
fe8db0c5 | 2860 | |
7374f9d8 | 2861 | fprintf(f, |
b0e39c82 TG |
2862 | "DHCP_LEASE=%s\n", |
2863 | link->lease_file); | |
deb2e523 | 2864 | } else |
68a8723c | 2865 | unlink(link->lease_file); |
fe8db0c5 | 2866 | |
0bc70f1d TG |
2867 | if (link->ipv4ll) { |
2868 | struct in_addr address; | |
2869 | ||
2870 | r = sd_ipv4ll_get_address(link->ipv4ll, &address); | |
2871 | if (r >= 0) { | |
2872 | fputs("IPV4LL_ADDRESS=", f); | |
2873 | serialize_in_addrs(f, &address, 1); | |
2874 | fputc('\n', f); | |
2875 | } | |
2876 | } | |
2877 | ||
49699bac SS |
2878 | if (link->lldp) { |
2879 | assert(link->network); | |
2880 | ||
2881 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
2882 | if (r < 0) | |
2883 | goto fail; | |
2884 | ||
2885 | fprintf(f, | |
2886 | "LLDP_FILE=%s\n", | |
2887 | link->lldp_file); | |
2888 | } else | |
2889 | unlink(link->lldp_file); | |
2890 | ||
c2d6bd61 LP |
2891 | r = fflush_and_check(f); |
2892 | if (r < 0) | |
2893 | goto fail; | |
fe8db0c5 | 2894 | |
c2d6bd61 | 2895 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 2896 | r = -errno; |
c2d6bd61 | 2897 | goto fail; |
fe8db0c5 TG |
2898 | } |
2899 | ||
c2d6bd61 | 2900 | return 0; |
dacd6cee | 2901 | |
c2d6bd61 | 2902 | fail: |
6a7a4e4d | 2903 | (void) unlink(link->state_file); |
6a7a4e4d LP |
2904 | if (temp_path) |
2905 | (void) unlink(temp_path); | |
2906 | ||
dacd6cee | 2907 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
2908 | } |
2909 | ||
84de38c5 TG |
2910 | /* The serialized state in /run is no longer up-to-date. */ |
2911 | void link_dirty(Link *link) { | |
2912 | int r; | |
2913 | ||
2914 | assert(link); | |
2915 | ||
2916 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); | |
2917 | if (r < 0) | |
2918 | /* allocation errors are ignored */ | |
2919 | return; | |
2920 | ||
2921 | r = set_put(link->manager->dirty_links, link); | |
2922 | if (r < 0) | |
2923 | /* allocation errors are ignored */ | |
2924 | return; | |
2925 | ||
2926 | link_ref(link); | |
2927 | } | |
2928 | ||
2929 | /* The serialized state in /run is up-to-date */ | |
2930 | void link_clean(Link *link) { | |
2931 | assert(link); | |
2932 | assert(link->manager); | |
2933 | ||
2934 | set_remove(link->manager->dirty_links, link); | |
2935 | link_unref(link); | |
2936 | } | |
2937 | ||
fe8db0c5 | 2938 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 2939 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
2940 | [LINK_STATE_ENSLAVING] = "configuring", |
2941 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
2942 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
2943 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 2944 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2945 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2946 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2947 | }; |
2948 | ||
2949 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
2950 | |
2951 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
2952 | [LINK_OPERSTATE_OFF] = "off", |
2953 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
2954 | [LINK_OPERSTATE_DORMANT] = "dormant", |
2955 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
2956 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
2957 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
2958 | }; | |
2959 | ||
2960 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |