]>
Commit | Line | Data |
---|---|---|
f579559b TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <netinet/ether.h> | |
23 | #include <linux/if.h> | |
4cc7a82c | 24 | #include <unistd.h> |
f579559b | 25 | |
1346b1f0 | 26 | #include "bus-util.h" |
bd91b83e | 27 | #include "dhcp-lease-internal.h" |
cf1d700d TG |
28 | #include "fileio.h" |
29 | #include "netlink-util.h" | |
c6f7c917 | 30 | #include "network-internal.h" |
cf1d700d TG |
31 | #include "set.h" |
32 | #include "socket-util.h" | |
33 | #include "udev-util.h" | |
34 | #include "util.h" | |
35 | #include "virt.h" | |
fc2f9534 | 36 | |
5a8bcb67 LP |
37 | #include "networkd-link.h" |
38 | #include "networkd-netdev.h" | |
fe8db0c5 | 39 | |
a97dcc12 | 40 | bool link_dhcp6_enabled(Link *link) { |
78c958f8 TG |
41 | if (link->flags & IFF_LOOPBACK) |
42 | return false; | |
43 | ||
44 | if (!link->network) | |
45 | return false; | |
46 | ||
e0ee46f2 | 47 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
48 | } |
49 | ||
a97dcc12 | 50 | bool link_dhcp4_enabled(Link *link) { |
78c958f8 TG |
51 | if (link->flags & IFF_LOOPBACK) |
52 | return false; | |
53 | ||
54 | if (!link->network) | |
55 | return false; | |
56 | ||
e0ee46f2 | 57 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
58 | } |
59 | ||
a97dcc12 | 60 | bool link_dhcp4_server_enabled(Link *link) { |
78c958f8 TG |
61 | if (link->flags & IFF_LOOPBACK) |
62 | return false; | |
63 | ||
64 | if (!link->network) | |
65 | return false; | |
66 | ||
67 | return link->network->dhcp_server; | |
68 | } | |
69 | ||
a97dcc12 | 70 | bool link_ipv4ll_enabled(Link *link) { |
78c958f8 TG |
71 | if (link->flags & IFF_LOOPBACK) |
72 | return false; | |
73 | ||
74 | if (!link->network) | |
75 | return false; | |
76 | ||
e0ee46f2 | 77 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
78 | } |
79 | ||
80 | bool link_ipv6ll_enabled(Link *link) { | |
81 | if (link->flags & IFF_LOOPBACK) | |
82 | return false; | |
83 | ||
84 | if (!link->network) | |
85 | return false; | |
86 | ||
e0ee46f2 | 87 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
88 | } |
89 | ||
a97dcc12 | 90 | bool link_lldp_enabled(Link *link) { |
ce43e484 SS |
91 | if (link->flags & IFF_LOOPBACK) |
92 | return false; | |
93 | ||
94 | if (!link->network) | |
95 | return false; | |
96 | ||
5a8bcb67 | 97 | if (link->network->bridge) |
ce43e484 SS |
98 | return false; |
99 | ||
100 | return link->network->lldp; | |
101 | } | |
102 | ||
769d324c | 103 | static bool link_ipv4_forward_enabled(Link *link) { |
5a8bcb67 LP |
104 | if (link->flags & IFF_LOOPBACK) |
105 | return false; | |
106 | ||
107 | if (!link->network) | |
108 | return false; | |
109 | ||
e0ee46f2 | 110 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
111 | } |
112 | ||
113 | static bool link_ipv6_forward_enabled(Link *link) { | |
114 | if (link->flags & IFF_LOOPBACK) | |
115 | return false; | |
116 | ||
117 | if (!link->network) | |
118 | return false; | |
119 | ||
e0ee46f2 | 120 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
121 | } |
122 | ||
1f0d9695 | 123 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
49092e22 | 124 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 125 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
126 | |
127 | if (!link->network) | |
1f0d9695 | 128 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
129 | |
130 | return link->network->ipv6_privacy_extensions; | |
131 | } | |
132 | ||
51d18171 TG |
133 | #define FLAG_STRING(string, flag, old, new) \ |
134 | (((old ^ new) & flag) \ | |
135 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
136 | : "") | |
137 | ||
1c4baffc | 138 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
139 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
140 | uint8_t operstate; | |
141 | int r; | |
142 | ||
143 | assert(link); | |
144 | ||
145 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
146 | if (r < 0) |
147 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 148 | |
1c4baffc | 149 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
150 | if (r < 0) |
151 | /* if we got a message without operstate, take it to mean | |
152 | the state was unchanged */ | |
153 | operstate = link->kernel_operstate; | |
154 | ||
155 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
156 | return 0; | |
157 | ||
158 | if (link->flags != flags) { | |
6a7a4e4d | 159 | 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 |
160 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
161 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
162 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
163 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
164 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
165 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
166 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
167 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
168 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
169 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
170 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
171 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
172 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
173 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
174 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
175 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
176 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
177 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
178 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
179 | ||
180 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
181 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
182 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
183 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
184 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
185 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
186 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
187 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
188 | ||
189 | /* link flags are currently at most 18 bits, let's align to | |
190 | * printing 20 */ | |
191 | if (unknown_flags_added) | |
79008bdd | 192 | log_link_debug(link, |
6a7a4e4d | 193 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
194 | unknown_flags_added); |
195 | ||
196 | if (unknown_flags_removed) | |
79008bdd | 197 | log_link_debug(link, |
6a7a4e4d | 198 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
199 | unknown_flags_removed); |
200 | } | |
201 | ||
202 | link->flags = flags; | |
203 | link->kernel_operstate = operstate; | |
204 | ||
205 | link_save(link); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
1c4baffc | 210 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 211 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 212 | uint16_t type; |
ca4e095a | 213 | const char *ifname; |
505f8da7 | 214 | int r, ifindex; |
f579559b | 215 | |
0c2f9b84 | 216 | assert(manager); |
505f8da7 | 217 | assert(message); |
f579559b TG |
218 | assert(ret); |
219 | ||
1c4baffc | 220 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
221 | if (r < 0) |
222 | return r; | |
223 | else if (type != RTM_NEWLINK) | |
224 | return -EINVAL; | |
225 | ||
226 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
227 | if (r < 0) | |
228 | return r; | |
229 | else if (ifindex <= 0) | |
230 | return -EINVAL; | |
231 | ||
1c4baffc | 232 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
233 | if (r < 0) |
234 | return r; | |
235 | ||
f579559b TG |
236 | link = new0(Link, 1); |
237 | if (!link) | |
238 | return -ENOMEM; | |
239 | ||
14b746f7 | 240 | link->n_ref = 1; |
5a3eb5a7 | 241 | link->manager = manager; |
8434fd5c | 242 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 243 | link->rtnl_extended_attrs = true; |
505f8da7 TG |
244 | link->ifindex = ifindex; |
245 | link->ifname = strdup(ifname); | |
246 | if (!link->ifname) | |
247 | return -ENOMEM; | |
f579559b | 248 | |
1c4baffc | 249 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 250 | if (r < 0) |
79008bdd | 251 | log_link_debug(link, "MAC address not found for new device, continuing without"); |
512922f8 | 252 | |
3c9b8860 TG |
253 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", |
254 | link->ifindex); | |
fe8db0c5 | 255 | if (r < 0) |
315db1a8 | 256 | return -ENOMEM; |
fe8db0c5 | 257 | |
3c9b8860 TG |
258 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", |
259 | link->ifindex); | |
68a8723c TG |
260 | if (r < 0) |
261 | return -ENOMEM; | |
262 | ||
49699bac SS |
263 | r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", |
264 | link->ifindex); | |
265 | if (r < 0) | |
266 | return -ENOMEM; | |
267 | ||
268 | ||
d5099efc | 269 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
270 | if (r < 0) |
271 | return r; | |
272 | ||
273 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
274 | if (r < 0) |
275 | return r; | |
276 | ||
51d18171 TG |
277 | r = link_update_flags(link, message); |
278 | if (r < 0) | |
279 | return r; | |
280 | ||
f579559b TG |
281 | *ret = link; |
282 | link = NULL; | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
14b746f7 | 287 | static void link_free(Link *link) { |
428fd0a7 | 288 | Address *address; |
0d4ad91d AR |
289 | Iterator i; |
290 | Link *carrier; | |
428fd0a7 | 291 | |
f579559b TG |
292 | if (!link) |
293 | return; | |
294 | ||
cf1d700d TG |
295 | while (!set_isempty(link->addresses)) |
296 | address_free(set_first(link->addresses)); | |
297 | ||
298 | set_free(link->addresses); | |
428fd0a7 | 299 | |
adda1ed9 TG |
300 | while (!set_isempty(link->addresses_foreign)) |
301 | address_free(set_first(link->addresses_foreign)); | |
302 | ||
303 | set_free(link->addresses_foreign); | |
304 | ||
11bf3cce LP |
305 | while ((address = link->pool_addresses)) { |
306 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
307 | address_free(address); | |
308 | } | |
309 | ||
bfcdba8d | 310 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 311 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 312 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 313 | |
68a8723c TG |
314 | free(link->lease_file); |
315 | ||
07e10d1a TG |
316 | sd_lldp_free(link->lldp); |
317 | ||
49699bac SS |
318 | free(link->lldp_file); |
319 | ||
56cd007a | 320 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 321 | sd_dhcp6_client_unref(link->dhcp6_client); |
6b66097b | 322 | sd_icmp6_nd_unref(link->icmp6_router_discovery); |
4138fb2c | 323 | |
28aeb07f | 324 | if (link->manager) |
ae06ab10 | 325 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 326 | |
c166a070 | 327 | free(link->ifname); |
68a8723c | 328 | |
fe8db0c5 | 329 | free(link->state_file); |
c166a070 | 330 | |
b5db00e5 UTL |
331 | udev_device_unref(link->udev_device); |
332 | ||
0d4ad91d AR |
333 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
334 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
335 | hashmap_free(link->bound_to_links); | |
336 | ||
337 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
338 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
339 | hashmap_free(link->bound_by_links); | |
340 | ||
f579559b TG |
341 | free(link); |
342 | } | |
343 | ||
14b746f7 | 344 | Link *link_unref(Link *link) { |
957325b7 TG |
345 | if (!link) |
346 | return NULL; | |
347 | ||
348 | assert(link->n_ref > 0); | |
349 | ||
350 | link->n_ref --; | |
351 | ||
352 | if (link->n_ref > 0) | |
353 | return NULL; | |
354 | ||
355 | link_free(link); | |
14b746f7 TG |
356 | |
357 | return NULL; | |
358 | } | |
359 | ||
360 | Link *link_ref(Link *link) { | |
957325b7 TG |
361 | if (!link) |
362 | return NULL; | |
363 | ||
364 | assert(link->n_ref > 0); | |
365 | ||
366 | link->n_ref ++; | |
14b746f7 TG |
367 | |
368 | return link; | |
369 | } | |
370 | ||
11a7f229 TG |
371 | int link_get(Manager *m, int ifindex, Link **ret) { |
372 | Link *link; | |
11a7f229 TG |
373 | |
374 | assert(m); | |
11a7f229 TG |
375 | assert(ifindex); |
376 | assert(ret); | |
377 | ||
ae06ab10 | 378 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
379 | if (!link) |
380 | return -ENODEV; | |
381 | ||
382 | *ret = link; | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
e331e246 TG |
387 | static void link_set_state(Link *link, LinkState state) { |
388 | assert(link); | |
389 | ||
390 | if (link->state == state) | |
391 | return; | |
392 | ||
393 | link->state = state; | |
394 | ||
395 | link_send_changed(link, "AdministrativeState", NULL); | |
396 | ||
397 | return; | |
398 | } | |
399 | ||
57bd6899 TG |
400 | static void link_enter_unmanaged(Link *link) { |
401 | assert(link); | |
402 | ||
6a7a4e4d | 403 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 404 | |
e331e246 | 405 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 TG |
406 | |
407 | link_save(link); | |
408 | } | |
409 | ||
111bb8f9 TG |
410 | static int link_stop_clients(Link *link) { |
411 | int r = 0, k; | |
412 | ||
413 | assert(link); | |
414 | assert(link->manager); | |
415 | assert(link->manager->event); | |
416 | ||
417 | if (!link->network) | |
418 | return 0; | |
419 | ||
ba179154 | 420 | if (link->dhcp_client) { |
111bb8f9 | 421 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d LP |
422 | if (k < 0) |
423 | r = log_link_warning_errno(link, r, "Could not stop DHCPv4 client: %m"); | |
111bb8f9 TG |
424 | } |
425 | ||
ba179154 | 426 | if (link->ipv4ll) { |
111bb8f9 | 427 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d LP |
428 | if (k < 0) |
429 | r = log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m"); | |
dd43110f TG |
430 | } |
431 | ||
ba179154 | 432 | if(link->icmp6_router_discovery) { |
1873a3d3 PF |
433 | if (link->dhcp6_client) { |
434 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
6a7a4e4d LP |
435 | if (k < 0) |
436 | r = log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); | |
1873a3d3 | 437 | } |
4138fb2c | 438 | |
1873a3d3 | 439 | k = sd_icmp6_nd_stop(link->icmp6_router_discovery); |
6a7a4e4d LP |
440 | if (k < 0) |
441 | r = log_link_warning_errno(link, r, "Could not stop ICMPv6 router discovery: %m"); | |
4138fb2c PF |
442 | } |
443 | ||
ce43e484 | 444 | if (link->lldp) { |
ce43e484 | 445 | k = sd_lldp_stop(link->lldp); |
6a7a4e4d LP |
446 | if (k < 0) |
447 | r = log_link_warning_errno(link, r, "Could not stop LLDP: %m"); | |
ce43e484 SS |
448 | } |
449 | ||
111bb8f9 TG |
450 | return r; |
451 | } | |
452 | ||
b22d8a00 | 453 | void link_enter_failed(Link *link) { |
ef1ba606 | 454 | assert(link); |
f882c247 | 455 | |
370e9930 | 456 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
457 | return; |
458 | ||
6a7a4e4d | 459 | log_link_warning(link, "Failed"); |
449f7554 | 460 | |
e331e246 | 461 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 462 | |
111bb8f9 TG |
463 | link_stop_clients(link); |
464 | ||
fe8db0c5 | 465 | link_save(link); |
f882c247 TG |
466 | } |
467 | ||
4f434938 LP |
468 | static Address* link_find_dhcp_server_address(Link *link) { |
469 | Address *address; | |
470 | ||
471 | assert(link); | |
472 | assert(link->network); | |
473 | ||
d4cdbea5 | 474 | /* The first statically configured address if there is any */ |
4f434938 LP |
475 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
476 | ||
477 | if (address->family != AF_INET) | |
478 | continue; | |
479 | ||
af93291c | 480 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
481 | continue; |
482 | ||
483 | return address; | |
484 | } | |
485 | ||
486 | /* If that didn't work, find a suitable address we got from the pool */ | |
487 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
488 | if (address->family != AF_INET) | |
489 | continue; | |
490 | ||
491 | return address; | |
492 | } | |
493 | ||
494 | return NULL; | |
495 | } | |
496 | ||
dd43110f | 497 | static int link_enter_configured(Link *link) { |
dd43110f TG |
498 | assert(link); |
499 | assert(link->network); | |
500 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
501 | ||
6a7a4e4d | 502 | log_link_info(link, "Configured"); |
dd43110f | 503 | |
e331e246 | 504 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f TG |
505 | |
506 | link_save(link); | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
8012cd39 TG |
511 | void link_check_ready(Link *link) { |
512 | Address *a; | |
513 | Iterator i; | |
514 | ||
3c9b8860 | 515 | assert(link); |
adda1ed9 TG |
516 | |
517 | if (!link->network) | |
518 | return; | |
3c9b8860 TG |
519 | |
520 | if (!link->static_configured) | |
521 | return; | |
522 | ||
78c958f8 | 523 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
524 | if (!link->ipv4ll_address || |
525 | !link->ipv4ll_route) | |
526 | return; | |
527 | ||
3ada37a2 PF |
528 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
529 | !link->dhcp4_configured) || | |
530 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
531 | !link->dhcp6_configured) || | |
532 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
533 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
18d29550 PF |
534 | return; |
535 | ||
8012cd39 TG |
536 | SET_FOREACH(a, link->addresses, i) |
537 | if (!address_is_ready(a)) | |
538 | return; | |
539 | ||
9fdaa992 TG |
540 | if (link->state != LINK_STATE_CONFIGURED) |
541 | link_enter_configured(link); | |
3c9b8860 TG |
542 | |
543 | return; | |
544 | } | |
545 | ||
1c4baffc | 546 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 547 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
548 | int r; |
549 | ||
3c9b8860 | 550 | assert(link->link_messages > 0); |
370e9930 TG |
551 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
552 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
553 | LINK_STATE_LINGER)); | |
f882c247 | 554 | |
3c9b8860 | 555 | link->link_messages --; |
f882c247 | 556 | |
77a008c0 | 557 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
558 | return 1; |
559 | ||
1c4baffc | 560 | r = sd_netlink_message_get_errno(m); |
c166a070 | 561 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 562 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 563 | |
3c9b8860 | 564 | if (link->link_messages == 0) { |
6a7a4e4d | 565 | log_link_debug(link, "Routes set"); |
3c9b8860 | 566 | link->static_configured = true; |
8012cd39 | 567 | link_check_ready(link); |
dd3efc09 | 568 | } |
f882c247 TG |
569 | |
570 | return 1; | |
571 | } | |
572 | ||
573 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 574 | Route *rt; |
f882c247 TG |
575 | int r; |
576 | ||
577 | assert(link); | |
578 | assert(link->network); | |
ef1ba606 | 579 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 580 | |
e331e246 | 581 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 582 | |
3d3d4255 | 583 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 584 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 585 | if (r < 0) { |
6a7a4e4d | 586 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 587 | link_enter_failed(link); |
a6cc569e TG |
588 | return r; |
589 | } | |
590 | ||
3c9b8860 | 591 | link->link_messages ++; |
8ddbeaa2 | 592 | } |
f5be5601 | 593 | |
3c9b8860 TG |
594 | if (link->link_messages == 0) { |
595 | link->static_configured = true; | |
8012cd39 | 596 | link_check_ready(link); |
431ca2ce | 597 | } else |
6a7a4e4d | 598 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
599 | |
600 | return 0; | |
601 | } | |
602 | ||
91b5f997 | 603 | int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 604 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
605 | int r; |
606 | ||
607 | assert(m); | |
608 | assert(link); | |
609 | assert(link->ifname); | |
610 | ||
5da8149f | 611 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
612 | return 1; |
613 | ||
1c4baffc | 614 | r = sd_netlink_message_get_errno(m); |
b90b025a | 615 | if (r < 0 && r != -ESRCH) |
a2fae7bb | 616 | log_link_warning_errno(link, r, "Could not drop route: %m"); |
5c1d3fc9 | 617 | |
5bdd314c | 618 | return 1; |
5c1d3fc9 UTL |
619 | } |
620 | ||
1c4baffc | 621 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 622 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
623 | int r; |
624 | ||
4958aee4 | 625 | assert(rtnl); |
f5be5601 TG |
626 | assert(m); |
627 | assert(link); | |
628 | assert(link->ifname); | |
3c9b8860 | 629 | assert(link->link_messages > 0); |
370e9930 TG |
630 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
631 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 632 | |
3c9b8860 | 633 | link->link_messages --; |
f882c247 | 634 | |
5da8149f | 635 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
636 | return 1; |
637 | ||
1c4baffc | 638 | r = sd_netlink_message_get_errno(m); |
c166a070 | 639 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 640 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 641 | else if (r >= 0) |
200a0868 | 642 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 643 | |
3c9b8860 | 644 | if (link->link_messages == 0) { |
6a7a4e4d | 645 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 646 | link_enter_set_routes(link); |
dd3efc09 | 647 | } |
f882c247 TG |
648 | |
649 | return 1; | |
650 | } | |
651 | ||
4f5f911e LP |
652 | static int link_push_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
653 | _cleanup_free_ struct in_addr *addresses = NULL; | |
654 | size_t n_addresses = 0, n_allocated = 0; | |
655 | char **a; | |
656 | ||
657 | log_debug("Copying DNS server information from %s", link->ifname); | |
658 | ||
659 | if (!link->network) | |
660 | return 0; | |
661 | ||
662 | STRV_FOREACH(a, link->network->dns) { | |
663 | struct in_addr ia; | |
664 | ||
665 | /* Only look for IPv4 addresses */ | |
666 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
667 | continue; | |
668 | ||
669 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
670 | return log_oom(); | |
671 | ||
672 | addresses[n_addresses++] = ia; | |
673 | } | |
674 | ||
675 | if (link->network->dhcp_dns && | |
676 | link->dhcp_lease) { | |
677 | const struct in_addr *da = NULL; | |
678 | int n; | |
679 | ||
680 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
681 | if (n > 0) { | |
682 | ||
683 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
684 | return log_oom(); | |
685 | ||
686 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
687 | n_addresses += n; | |
688 | } | |
689 | } | |
690 | ||
691 | if (n_addresses <= 0) | |
692 | return 0; | |
693 | ||
694 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
695 | } | |
696 | ||
697 | static int link_push_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { | |
698 | _cleanup_free_ struct in_addr *addresses = NULL; | |
699 | size_t n_addresses = 0, n_allocated = 0; | |
700 | char **a; | |
701 | ||
702 | if (!link->network) | |
703 | return 0; | |
704 | ||
705 | log_debug("Copying NTP server information from %s", link->ifname); | |
706 | ||
707 | STRV_FOREACH(a, link->network->ntp) { | |
708 | struct in_addr ia; | |
709 | ||
710 | /* Only look for IPv4 addresses */ | |
711 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
712 | continue; | |
713 | ||
714 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
715 | return log_oom(); | |
716 | ||
717 | addresses[n_addresses++] = ia; | |
718 | } | |
719 | ||
720 | if (link->network->dhcp_ntp && | |
721 | link->dhcp_lease) { | |
722 | const struct in_addr *da = NULL; | |
723 | int n; | |
724 | ||
725 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
726 | if (n > 0) { | |
727 | ||
728 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
729 | return log_oom(); | |
730 | ||
731 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
732 | n_addresses += n; | |
733 | } | |
734 | } | |
735 | ||
736 | if (n_addresses <= 0) | |
737 | return 0; | |
738 | ||
739 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
740 | } | |
741 | ||
f882c247 | 742 | static int link_enter_set_addresses(Link *link) { |
a6cc569e | 743 | Address *ad; |
f882c247 TG |
744 | int r; |
745 | ||
746 | assert(link); | |
747 | assert(link->network); | |
f5be5601 | 748 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 749 | |
e331e246 | 750 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 751 | |
3d3d4255 | 752 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
66669078 | 753 | r = address_configure(ad, link, &address_handler, false); |
dd3efc09 | 754 | if (r < 0) { |
5a8bcb67 | 755 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
756 | link_enter_failed(link); |
757 | return r; | |
758 | } | |
759 | ||
3c9b8860 | 760 | link->link_messages ++; |
f882c247 TG |
761 | } |
762 | ||
d4cdbea5 TG |
763 | /* now that we can figure out a default address for the dhcp server, |
764 | start it */ | |
765 | if (link_dhcp4_server_enabled(link)) { | |
d4cdbea5 | 766 | Address *address; |
4f5f911e LP |
767 | Link *uplink = NULL; |
768 | bool acquired_uplink = false; | |
d4cdbea5 TG |
769 | |
770 | address = link_find_dhcp_server_address(link); | |
771 | if (!address) { | |
6a7a4e4d | 772 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
773 | link_enter_failed(link); |
774 | return 0; | |
775 | } | |
776 | ||
61986155 | 777 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
778 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
779 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
780 | if (r < 0) |
781 | return r; | |
782 | ||
783 | /* TODO: | |
784 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
785 | &main_address->in_addr.in); | |
786 | if (r < 0) | |
787 | return r; | |
d4cdbea5 TG |
788 | */ |
789 | ||
586ac6f7 LP |
790 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
791 | r = sd_dhcp_server_set_max_lease_time( | |
792 | link->dhcp_server, | |
793 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
794 | if (r < 0) | |
795 | return r; | |
796 | } | |
797 | ||
798 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
799 | r = sd_dhcp_server_set_default_lease_time( | |
800 | link->dhcp_server, | |
801 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
802 | if (r < 0) | |
803 | return r; | |
804 | } | |
805 | ||
1a04db0f LP |
806 | if (link->network->dhcp_server_emit_dns) { |
807 | ||
4f5f911e | 808 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 809 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
810 | else { |
811 | uplink = manager_find_uplink(link->manager, link); | |
812 | acquired_uplink = true; | |
813 | ||
814 | if (!uplink) { | |
815 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
816 | r = 0; | |
817 | } else | |
818 | r = link_push_dns_to_dhcp_server(uplink, link->dhcp_server); | |
819 | } | |
820 | if (r < 0) | |
821 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
822 | } |
823 | ||
824 | ||
825 | if (link->network->dhcp_server_emit_ntp) { | |
826 | ||
4f5f911e | 827 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 828 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
829 | else { |
830 | if (!acquired_uplink) | |
831 | uplink = manager_find_uplink(link->manager, link); | |
832 | ||
833 | if (!uplink) { | |
834 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
835 | r = 0; | |
836 | } else | |
837 | r = link_push_ntp_to_dhcp_server(uplink, link->dhcp_server); | |
838 | ||
839 | } | |
840 | if (r < 0) | |
841 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
842 | } |
843 | ||
8eb9058d LP |
844 | if (link->network->dhcp_server_emit_timezone) { |
845 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 846 | const char *tz = NULL; |
8eb9058d LP |
847 | |
848 | if (link->network->dhcp_server_timezone) | |
849 | tz = link->network->dhcp_server_timezone; | |
850 | else { | |
851 | r = get_timezone(&buffer); | |
852 | if (r < 0) | |
853 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
854 | else | |
855 | tz = buffer; | |
856 | } | |
857 | ||
858 | if (tz) { | |
859 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
860 | if (r < 0) | |
861 | return r; | |
862 | } | |
863 | } | |
864 | ||
d4cdbea5 TG |
865 | r = sd_dhcp_server_start(link->dhcp_server); |
866 | if (r < 0) { | |
6a7a4e4d | 867 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
868 | |
869 | link_enter_failed(link); | |
870 | ||
871 | return 0; | |
872 | } | |
873 | ||
6a7a4e4d | 874 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
875 | } |
876 | ||
6a7a4e4d | 877 | if (link->link_messages == 0) |
431ca2ce | 878 | link_enter_set_routes(link); |
6a7a4e4d LP |
879 | else |
880 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 881 | |
f882c247 TG |
882 | return 0; |
883 | } | |
884 | ||
91b5f997 | 885 | int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 886 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
887 | int r; |
888 | ||
889 | assert(m); | |
890 | assert(link); | |
891 | assert(link->ifname); | |
892 | ||
5da8149f | 893 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
894 | return 1; |
895 | ||
1c4baffc | 896 | r = sd_netlink_message_get_errno(m); |
b90b025a | 897 | if (r < 0 && r != -EADDRNOTAVAIL) |
a2fae7bb | 898 | log_link_warning_errno(link, r, "Could not drop address: %m"); |
ff254138 | 899 | |
5bdd314c | 900 | return 1; |
ff254138 TG |
901 | } |
902 | ||
a245ced0 | 903 | static int link_set_bridge_fdb(Link *const link) { |
b98b483b AR |
904 | FdbEntry *fdb_entry; |
905 | int r = 0; | |
906 | ||
907 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
ea6ec096 | 908 | r = fdb_entry_configure(link, fdb_entry); |
b98b483b | 909 | if(r < 0) { |
6a7a4e4d | 910 | log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
b98b483b AR |
911 | break; |
912 | } | |
913 | } | |
914 | ||
915 | return r; | |
916 | } | |
917 | ||
1c4baffc | 918 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
919 | _cleanup_link_unref_ Link *link = userdata; |
920 | int r; | |
921 | ||
6a7a4e4d | 922 | log_link_debug(link, "Set link"); |
e1853b00 | 923 | |
1c4baffc | 924 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 925 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 926 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
927 | link_enter_failed(link); |
928 | return 1; | |
929 | } | |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
19070062 | 934 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
5da8149f | 935 | _cleanup_link_unref_ Link *link = userdata; |
21b80ad1 | 936 | const sd_bus_error *e; |
1346b1f0 | 937 | |
19070062 | 938 | assert(m); |
b226d99b TG |
939 | assert(link); |
940 | ||
5da8149f | 941 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 942 | return 1; |
370e9930 | 943 | |
21b80ad1 LP |
944 | e = sd_bus_message_get_error(m); |
945 | if (e) | |
946 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set hostname: %s", e->message); | |
1346b1f0 TG |
947 | |
948 | return 1; | |
949 | } | |
950 | ||
3c9b8860 | 951 | int link_set_hostname(Link *link, const char *hostname) { |
21b80ad1 | 952 | int r; |
1346b1f0 | 953 | |
b226d99b TG |
954 | assert(link); |
955 | assert(link->manager); | |
1346b1f0 | 956 | |
dce391e7 | 957 | log_link_debug(link, "Setting transient hostname: '%s'", strna(hostname)); |
1346b1f0 | 958 | |
3c9b8860 TG |
959 | if (!link->manager->bus) { |
960 | /* TODO: replace by assert when we can rely on kdbus */ | |
6a7a4e4d | 961 | log_link_info(link, "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
962 | return 0; |
963 | } | |
964 | ||
9c34154a | 965 | r = sd_bus_call_method_async( |
b226d99b | 966 | link->manager->bus, |
9c34154a | 967 | NULL, |
1346b1f0 TG |
968 | "org.freedesktop.hostname1", |
969 | "/org/freedesktop/hostname1", | |
970 | "org.freedesktop.hostname1", | |
9c34154a UTL |
971 | "SetHostname", |
972 | set_hostname_handler, | |
973 | link, | |
974 | "sb", | |
975 | hostname, | |
976 | false); | |
1346b1f0 | 977 | |
6a7a4e4d LP |
978 | if (r < 0) |
979 | return log_link_error_errno(link, r, "Could not set transient hostname: %m"); | |
b226d99b TG |
980 | |
981 | link_ref(link); | |
1346b1f0 | 982 | |
5da8149f | 983 | return 0; |
1346b1f0 TG |
984 | } |
985 | ||
21b80ad1 LP |
986 | static int set_timezone_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
987 | _cleanup_link_unref_ Link *link = userdata; | |
988 | const sd_bus_error *e; | |
989 | ||
990 | assert(m); | |
991 | assert(link); | |
992 | ||
993 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
994 | return 1; | |
995 | ||
996 | e = sd_bus_message_get_error(m); | |
997 | if (e) | |
998 | log_link_warning_errno(link, sd_bus_error_get_errno(e), "Could not set timezone: %s", e->message); | |
999 | ||
1000 | return 1; | |
1001 | } | |
1002 | ||
64d6c229 | 1003 | int link_set_timezone(Link *link, const char *tz) { |
21b80ad1 LP |
1004 | int r; |
1005 | ||
1006 | assert(link); | |
1007 | assert(link->manager); | |
64d6c229 | 1008 | assert(tz); |
21b80ad1 | 1009 | |
64d6c229 | 1010 | log_link_debug(link, "Setting system timezone: '%s'", tz); |
21b80ad1 LP |
1011 | |
1012 | if (!link->manager->bus) { | |
1013 | log_link_info(link, "Not connected to system bus, ignoring timezone."); | |
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | r = sd_bus_call_method_async( | |
1018 | link->manager->bus, | |
1019 | NULL, | |
1020 | "org.freedesktop.timedate1", | |
1021 | "/org/freedesktop/timedate1", | |
1022 | "org.freedesktop.timedate1", | |
1023 | "SetTimezone", | |
1024 | set_timezone_handler, | |
1025 | link, | |
1026 | "sb", | |
64d6c229 | 1027 | tz, |
21b80ad1 LP |
1028 | false); |
1029 | if (r < 0) | |
1030 | return log_link_error_errno(link, r, "Could not set timezone: %m"); | |
1031 | ||
1032 | link_ref(link); | |
1033 | ||
1034 | return 0; | |
1035 | } | |
1036 | ||
1c4baffc | 1037 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1038 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
1039 | int r; |
1040 | ||
1041 | assert(m); | |
1042 | assert(link); | |
1043 | assert(link->ifname); | |
1044 | ||
5da8149f | 1045 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1046 | return 1; |
1047 | ||
1c4baffc | 1048 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 1049 | if (r < 0) |
a2fae7bb | 1050 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
4f882b2a TG |
1051 | |
1052 | return 1; | |
1053 | } | |
1054 | ||
3c9b8860 | 1055 | int link_set_mtu(Link *link, uint32_t mtu) { |
1c4baffc | 1056 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f882b2a TG |
1057 | int r; |
1058 | ||
1059 | assert(link); | |
1060 | assert(link->manager); | |
1061 | assert(link->manager->rtnl); | |
1062 | ||
6a7a4e4d | 1063 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1064 | |
6a7a4e4d LP |
1065 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1066 | if (r < 0) | |
1067 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1068 | |
1c4baffc | 1069 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1070 | if (r < 0) |
1071 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1072 | |
1c4baffc | 1073 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
1074 | if (r < 0) |
1075 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1076 | |
ae941762 | 1077 | link_ref(link); |
b226d99b | 1078 | |
4f882b2a TG |
1079 | return 0; |
1080 | } | |
1081 | ||
e1853b00 | 1082 | static int link_set_bridge(Link *link) { |
1c4baffc | 1083 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
e1853b00 SS |
1084 | int r; |
1085 | ||
1086 | assert(link); | |
1087 | assert(link->network); | |
1088 | ||
6a7a4e4d LP |
1089 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1090 | if (r < 0) | |
1091 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1092 | |
1093 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1094 | if (r < 0) |
1095 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1096 | |
1c4baffc | 1097 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1098 | if (r < 0) |
1099 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1100 | |
84c34096 | 1101 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, !link->network->use_bpdu); |
eb7ff4dd SS |
1102 | if (r < 0) |
1103 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1104 | ||
1105 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1106 | if (r < 0) | |
1107 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1108 | ||
1109 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1110 | if (r < 0) | |
1111 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1112 | ||
23da66bb | 1113 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, !link->network->allow_port_to_be_root); |
eb7ff4dd SS |
1114 | if (r < 0) |
1115 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
1116 | ||
1117 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1118 | if (r < 0) | |
1119 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
1120 | ||
e1853b00 | 1121 | if(link->network->cost != 0) { |
1c4baffc | 1122 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1123 | if (r < 0) |
1124 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 SS |
1125 | } |
1126 | ||
1c4baffc | 1127 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1128 | if (r < 0) |
1129 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1130 | |
1c4baffc | 1131 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
1132 | if (r < 0) |
1133 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1134 | |
1135 | link_ref(link); | |
1136 | ||
1137 | return r; | |
1138 | } | |
1139 | ||
49699bac SS |
1140 | static void lldp_handler(sd_lldp *lldp, int event, void *userdata) { |
1141 | Link *link = userdata; | |
1142 | int r; | |
1143 | ||
1144 | assert(link); | |
1145 | assert(link->network); | |
1146 | assert(link->manager); | |
1147 | ||
9ef61f2e DH |
1148 | switch (event) { |
1149 | case SD_LLDP_EVENT_UPDATE_INFO: | |
1150 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
1151 | if (r < 0) | |
1152 | log_link_warning_errno(link, r, "Could not save LLDP: %m"); | |
49699bac | 1153 | |
9ef61f2e DH |
1154 | break; |
1155 | default: | |
1156 | break; | |
1157 | } | |
49699bac SS |
1158 | } |
1159 | ||
ff254138 TG |
1160 | static int link_acquire_conf(Link *link) { |
1161 | int r; | |
1162 | ||
1163 | assert(link); | |
1164 | assert(link->network); | |
ff254138 TG |
1165 | assert(link->manager); |
1166 | assert(link->manager->event); | |
1167 | ||
78c958f8 | 1168 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1169 | assert(link->ipv4ll); |
ff254138 | 1170 | |
6a7a4e4d | 1171 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1172 | |
1173 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1174 | if (r < 0) |
1175 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1176 | } |
1177 | ||
78c958f8 | 1178 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1179 | assert(link->dhcp_client); |
ff254138 | 1180 | |
6a7a4e4d | 1181 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1182 | |
5c1d3fc9 | 1183 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1184 | if (r < 0) |
1185 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1186 | } |
ff254138 | 1187 | |
78c958f8 | 1188 | if (link_dhcp6_enabled(link)) { |
4138fb2c PF |
1189 | assert(link->icmp6_router_discovery); |
1190 | ||
6a7a4e4d | 1191 | log_link_debug(link, "Discovering IPv6 routers"); |
4138fb2c PF |
1192 | |
1193 | r = sd_icmp6_router_solicitation_start(link->icmp6_router_discovery); | |
6a7a4e4d LP |
1194 | if (r < 0) |
1195 | return log_link_warning_errno(link, r, "Could not start IPv6 router discovery: %m"); | |
4138fb2c PF |
1196 | } |
1197 | ||
ce43e484 SS |
1198 | if (link_lldp_enabled(link)) { |
1199 | assert(link->lldp); | |
1200 | ||
1201 | log_link_debug(link, "Starting LLDP"); | |
1202 | ||
1203 | r = sd_lldp_start(link->lldp); | |
6a7a4e4d LP |
1204 | if (r < 0) |
1205 | return log_link_warning_errno(link, r, "Could not start LLDP: %m"); | |
ce43e484 SS |
1206 | } |
1207 | ||
ff254138 TG |
1208 | return 0; |
1209 | } | |
1210 | ||
a61bb41c | 1211 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1212 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1213 | ||
a61bb41c | 1214 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1215 | return true; |
1216 | ||
a61bb41c | 1217 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1218 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1219 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1220 | return true; |
1221 | ||
1222 | return false; | |
1223 | } | |
1224 | ||
1c4baffc | 1225 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1226 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1227 | int r; |
1228 | ||
1746cf2a TG |
1229 | assert(link); |
1230 | ||
5da8149f | 1231 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1232 | return 1; |
1233 | ||
1c4baffc | 1234 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
1235 | if (r < 0) |
1236 | /* we warn but don't fail the link, as it may be | |
1237 | brought up later */ | |
a2fae7bb | 1238 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1239 | |
f882c247 TG |
1240 | return 1; |
1241 | } | |
1242 | ||
1243 | static int link_up(Link *link) { | |
1c4baffc | 1244 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
5c3072ea | 1245 | uint8_t ipv6ll_mode; |
f579559b TG |
1246 | int r; |
1247 | ||
f882c247 | 1248 | assert(link); |
c106cc36 | 1249 | assert(link->network); |
f882c247 TG |
1250 | assert(link->manager); |
1251 | assert(link->manager->rtnl); | |
1252 | ||
6a7a4e4d | 1253 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1254 | |
6a7a4e4d LP |
1255 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1256 | if (r < 0) | |
1257 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1258 | |
5d4795f3 | 1259 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1260 | if (r < 0) |
1261 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1262 | |
c106cc36 | 1263 | if (link->network->mac) { |
1c4baffc | 1264 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1265 | if (r < 0) |
1266 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1267 | } |
1268 | ||
1269 | if (link->network->mtu) { | |
1c4baffc | 1270 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1271 | if (r < 0) |
1272 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1273 | } |
1274 | ||
1c4baffc | 1275 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1276 | if (r < 0) |
1277 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1278 | |
01d28f81 TG |
1279 | if (socket_ipv6_is_supported()) { |
1280 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ | |
1c4baffc | 1281 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1282 | if (r < 0) |
1283 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1284 | |
01d28f81 | 1285 | ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE; |
1c4baffc | 1286 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1287 | if (r < 0) |
1288 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1289 | |
01d28f81 | 1290 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1291 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1292 | if (r < 0) |
1293 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1294 | } | |
1295 | ||
1c4baffc | 1296 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1297 | if (r < 0) |
01d28f81 | 1298 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1299 | } |
d0d6a4cd | 1300 | |
1c4baffc | 1301 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1302 | if (r < 0) |
1303 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1304 | |
1c4baffc | 1305 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1306 | if (r < 0) |
1307 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1308 | |
b226d99b TG |
1309 | link_ref(link); |
1310 | ||
f882c247 TG |
1311 | return 0; |
1312 | } | |
1313 | ||
1c4baffc | 1314 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1315 | _cleanup_link_unref_ Link *link = userdata; |
1316 | int r; | |
1317 | ||
1318 | assert(link); | |
1319 | ||
1320 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1321 | return 1; | |
1322 | ||
1c4baffc | 1323 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1324 | if (r < 0) |
a2fae7bb | 1325 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d AR |
1326 | |
1327 | return 1; | |
1328 | } | |
1329 | ||
1330 | static int link_down(Link *link) { | |
1c4baffc | 1331 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
0d4ad91d AR |
1332 | int r; |
1333 | ||
1334 | assert(link); | |
1335 | assert(link->manager); | |
1336 | assert(link->manager->rtnl); | |
1337 | ||
6a7a4e4d | 1338 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1339 | |
1340 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1341 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1342 | if (r < 0) |
1343 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1344 | |
1345 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1346 | if (r < 0) |
1347 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1348 | |
1c4baffc | 1349 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1350 | if (r < 0) |
1351 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1352 | |
1353 | link_ref(link); | |
1354 | ||
1355 | return 0; | |
1356 | } | |
1357 | ||
1358 | static int link_handle_bound_to_list(Link *link) { | |
1359 | Link *l; | |
1360 | Iterator i; | |
1361 | int r; | |
1362 | bool required_up = false; | |
1363 | bool link_is_up = false; | |
1364 | ||
1365 | assert(link); | |
1366 | ||
1367 | if (hashmap_isempty(link->bound_to_links)) | |
1368 | return 0; | |
1369 | ||
1370 | if (link->flags & IFF_UP) | |
1371 | link_is_up = true; | |
1372 | ||
1373 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1374 | if (link_has_carrier(l)) { | |
1375 | required_up = true; | |
1376 | break; | |
1377 | } | |
1378 | ||
1379 | if (!required_up && link_is_up) { | |
1380 | r = link_down(link); | |
1381 | if (r < 0) | |
1382 | return r; | |
1383 | } else if (required_up && !link_is_up) { | |
1384 | r = link_up(link); | |
1385 | if (r < 0) | |
1386 | return r; | |
1387 | } | |
1388 | ||
1389 | return 0; | |
1390 | } | |
1391 | ||
1392 | static int link_handle_bound_by_list(Link *link) { | |
1393 | Iterator i; | |
1394 | Link *l; | |
1395 | int r; | |
1396 | ||
1397 | assert(link); | |
1398 | ||
1399 | if (hashmap_isempty(link->bound_by_links)) | |
1400 | return 0; | |
1401 | ||
1402 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1403 | r = link_handle_bound_to_list(l); | |
1404 | if (r < 0) | |
1405 | return r; | |
1406 | } | |
1407 | ||
1408 | return 0; | |
1409 | } | |
1410 | ||
1411 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1412 | int r; | |
1413 | ||
1414 | assert(link); | |
1415 | assert(carrier); | |
1416 | ||
1417 | if (link == carrier) | |
1418 | return 0; | |
1419 | ||
1420 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1421 | return 0; | |
1422 | ||
1423 | r = hashmap_ensure_allocated(h, NULL); | |
1424 | if (r < 0) | |
1425 | return r; | |
1426 | ||
1427 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1428 | if (r < 0) | |
1429 | return r; | |
1430 | ||
1431 | return 0; | |
1432 | } | |
1433 | ||
1434 | static int link_new_bound_by_list(Link *link) { | |
1435 | Manager *m; | |
1436 | Link *carrier; | |
1437 | Iterator i; | |
1438 | int r; | |
1439 | bool list_updated = false; | |
1440 | ||
1441 | assert(link); | |
1442 | assert(link->manager); | |
1443 | ||
1444 | m = link->manager; | |
1445 | ||
1446 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1447 | if (!carrier->network) | |
1448 | continue; | |
1449 | ||
1450 | if (strv_isempty(carrier->network->bind_carrier)) | |
1451 | continue; | |
1452 | ||
1453 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1454 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1455 | if (r < 0) | |
1456 | return r; | |
1457 | ||
1458 | list_updated = true; | |
1459 | } | |
1460 | } | |
1461 | ||
1462 | if (list_updated) | |
1463 | link_save(link); | |
1464 | ||
1465 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) { | |
1466 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); | |
1467 | if (r < 0) | |
1468 | return r; | |
1469 | ||
1470 | link_save(carrier); | |
1471 | } | |
1472 | ||
1473 | return 0; | |
1474 | } | |
1475 | ||
1476 | static int link_new_bound_to_list(Link *link) { | |
1477 | Manager *m; | |
1478 | Link *carrier; | |
1479 | Iterator i; | |
1480 | int r; | |
1481 | bool list_updated = false; | |
1482 | ||
1483 | assert(link); | |
1484 | assert(link->manager); | |
1485 | ||
1486 | if (!link->network) | |
1487 | return 0; | |
1488 | ||
1489 | if (strv_isempty(link->network->bind_carrier)) | |
1490 | return 0; | |
1491 | ||
1492 | m = link->manager; | |
1493 | ||
1494 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1495 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1496 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1497 | if (r < 0) | |
1498 | return r; | |
1499 | ||
1500 | list_updated = true; | |
1501 | } | |
1502 | } | |
1503 | ||
1504 | if (list_updated) | |
1505 | link_save(link); | |
1506 | ||
1507 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1508 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1509 | if (r < 0) | |
1510 | return r; | |
1511 | ||
1512 | link_save(carrier); | |
1513 | } | |
1514 | ||
1515 | return 0; | |
1516 | } | |
1517 | ||
1518 | static int link_new_carrier_maps(Link *link) { | |
1519 | int r; | |
1520 | ||
1521 | r = link_new_bound_by_list(link); | |
1522 | if (r < 0) | |
1523 | return r; | |
1524 | ||
1525 | r = link_handle_bound_by_list(link); | |
1526 | if (r < 0) | |
1527 | return r; | |
1528 | ||
1529 | r = link_new_bound_to_list(link); | |
1530 | if (r < 0) | |
1531 | return r; | |
1532 | ||
1533 | r = link_handle_bound_to_list(link); | |
1534 | if (r < 0) | |
1535 | return r; | |
1536 | ||
1537 | return 0; | |
1538 | } | |
1539 | ||
1540 | static void link_free_bound_to_list(Link *link) { | |
1541 | Link *bound_to; | |
1542 | Iterator i; | |
1543 | ||
1544 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
1545 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
1546 | ||
1547 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
1548 | link_save(bound_to); | |
1549 | } | |
1550 | ||
1551 | return; | |
1552 | } | |
1553 | ||
1554 | static void link_free_bound_by_list(Link *link) { | |
1555 | Link *bound_by; | |
1556 | Iterator i; | |
1557 | ||
1558 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
1559 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
1560 | ||
1561 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
1562 | link_save(bound_by); | |
1563 | link_handle_bound_to_list(bound_by); | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | return; | |
1568 | } | |
1569 | ||
1570 | static void link_free_carrier_maps(Link *link) { | |
1571 | bool list_updated = false; | |
1572 | ||
1573 | assert(link); | |
1574 | ||
1575 | if (!hashmap_isempty(link->bound_to_links)) { | |
1576 | link_free_bound_to_list(link); | |
1577 | list_updated = true; | |
1578 | } | |
1579 | ||
1580 | if (!hashmap_isempty(link->bound_by_links)) { | |
1581 | link_free_bound_by_list(link); | |
1582 | list_updated = true; | |
1583 | } | |
1584 | ||
1585 | if (list_updated) | |
1586 | link_save(link); | |
1587 | ||
1588 | return; | |
1589 | } | |
1590 | ||
1591 | void link_drop(Link *link) { | |
1592 | if (!link || link->state == LINK_STATE_LINGER) | |
1593 | return; | |
1594 | ||
1595 | link_set_state(link, LINK_STATE_LINGER); | |
1596 | ||
1597 | link_free_carrier_maps(link); | |
1598 | ||
6a7a4e4d | 1599 | log_link_debug(link, "Link removed"); |
0d4ad91d AR |
1600 | |
1601 | link_unref(link); | |
1602 | ||
1603 | return; | |
1604 | } | |
1605 | ||
3f265037 | 1606 | static int link_joined(Link *link) { |
f882c247 TG |
1607 | int r; |
1608 | ||
ef1ba606 | 1609 | assert(link); |
f5be5601 | 1610 | assert(link->network); |
dd3efc09 | 1611 | |
0d4ad91d AR |
1612 | if (!hashmap_isempty(link->bound_to_links)) { |
1613 | r = link_handle_bound_to_list(link); | |
1614 | if (r < 0) | |
1615 | return r; | |
1616 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1617 | r = link_up(link); |
1618 | if (r < 0) { | |
1619 | link_enter_failed(link); | |
1620 | return r; | |
1621 | } | |
ef1ba606 | 1622 | } |
f882c247 | 1623 | |
e1853b00 SS |
1624 | if(link->network->bridge) { |
1625 | r = link_set_bridge(link); | |
6a7a4e4d LP |
1626 | if (r < 0) |
1627 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
1628 | } |
1629 | ||
fb6730c4 | 1630 | return link_enter_set_addresses(link); |
02b59d57 TG |
1631 | } |
1632 | ||
62e2d5bb | 1633 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1634 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1635 | int r; |
1636 | ||
1746cf2a | 1637 | assert(link); |
ef1ba606 | 1638 | assert(link->network); |
02b59d57 | 1639 | |
52433f6b TG |
1640 | link->enslaving --; |
1641 | ||
5da8149f | 1642 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1643 | return 1; |
1644 | ||
1c4baffc | 1645 | r = sd_netlink_message_get_errno(m); |
856f962c | 1646 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 1647 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
1648 | link_enter_failed(link); |
1649 | return 1; | |
ba179154 | 1650 | } else |
6a7a4e4d | 1651 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 1652 | |
856f962c | 1653 | if (link->enslaving <= 0) |
3f265037 | 1654 | link_joined(link); |
02b59d57 TG |
1655 | |
1656 | return 1; | |
1657 | } | |
1658 | ||
3f265037 | 1659 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1660 | NetDev *netdev; |
672682a6 | 1661 | Iterator i; |
02b59d57 TG |
1662 | int r; |
1663 | ||
1664 | assert(link); | |
1665 | assert(link->network); | |
8434fd5c | 1666 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1667 | |
e331e246 | 1668 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 1669 | |
fe8db0c5 TG |
1670 | link_save(link); |
1671 | ||
7951dea2 SS |
1672 | if (!link->network->bridge && |
1673 | !link->network->bond && | |
6a0a2f86 | 1674 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1675 | return link_joined(link); |
02b59d57 | 1676 | |
d9c67ea1 | 1677 | if (link->network->bond) { |
f2341e0a LP |
1678 | log_struct(LOG_DEBUG, |
1679 | LOG_LINK_INTERFACE(link), | |
1680 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1681 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
1682 | NULL); | |
1683 | ||
1684 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 1685 | if (r < 0) { |
f2341e0a LP |
1686 | log_struct_errno(LOG_WARNING, r, |
1687 | LOG_LINK_INTERFACE(link), | |
1688 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1689 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
1690 | NULL); | |
1691 | ||
52433f6b TG |
1692 | link_enter_failed(link); |
1693 | return r; | |
1694 | } | |
1695 | ||
0ad6148e MO |
1696 | link->enslaving ++; |
1697 | } | |
1698 | ||
d9c67ea1 | 1699 | if (link->network->bridge) { |
f2341e0a LP |
1700 | log_struct(LOG_DEBUG, |
1701 | LOG_LINK_INTERFACE(link), | |
1702 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1703 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
1704 | NULL); | |
1705 | ||
1706 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 1707 | if (r < 0) { |
f2341e0a LP |
1708 | log_struct_errno(LOG_WARNING, r, |
1709 | LOG_LINK_INTERFACE(link), | |
1710 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1711 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
1712 | NULL), | |
0ad6148e MO |
1713 | link_enter_failed(link); |
1714 | return r; | |
1715 | } | |
1716 | ||
52433f6b TG |
1717 | link->enslaving ++; |
1718 | } | |
1719 | ||
6a0a2f86 | 1720 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 1721 | |
f2341e0a LP |
1722 | log_struct(LOG_DEBUG, |
1723 | LOG_LINK_INTERFACE(link), | |
1724 | LOG_NETDEV_INTERFACE(netdev), | |
1725 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
1726 | NULL); | |
1727 | ||
1728 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 1729 | if (r < 0) { |
f2341e0a LP |
1730 | log_struct_errno(LOG_WARNING, r, |
1731 | LOG_LINK_INTERFACE(link), | |
1732 | LOG_NETDEV_INTERFACE(netdev), | |
1733 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
1734 | NULL); | |
326cb406 SS |
1735 | link_enter_failed(link); |
1736 | return r; | |
1737 | } | |
1738 | ||
326cb406 SS |
1739 | link->enslaving ++; |
1740 | } | |
1741 | ||
ef1ba606 TG |
1742 | return 0; |
1743 | } | |
1744 | ||
769d324c | 1745 | static int link_set_ipv4_forward(Link *link) { |
15dee3f0 | 1746 | const char *p = NULL, *v; |
5a8bcb67 LP |
1747 | int r; |
1748 | ||
15dee3f0 LP |
1749 | if (link->flags & IFF_LOOPBACK) |
1750 | return 0; | |
1751 | ||
8add5f79 NO |
1752 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1753 | return 0; | |
1754 | ||
63c372cb | 1755 | p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1756 | v = one_zero(link_ipv4_forward_enabled(link)); |
1757 | ||
4c1fc3e4 | 1758 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1759 | if (r < 0) { |
1760 | /* If the right value is set anyway, don't complain */ | |
1761 | if (verify_one_line_file(p, v) > 0) | |
1762 | return 0; | |
1763 | ||
43c6d5ab | 1764 | log_link_warning_errno(link, r, "Cannot configure IPv4 forwarding for interface %s: %m", link->ifname); |
15dee3f0 | 1765 | } |
43c6d5ab | 1766 | |
769d324c LP |
1767 | return 0; |
1768 | } | |
1769 | ||
1770 | static int link_set_ipv6_forward(Link *link) { | |
15dee3f0 | 1771 | const char *p = NULL, *v = NULL; |
769d324c LP |
1772 | int r; |
1773 | ||
fe027299 LP |
1774 | /* Make this a NOP if IPv6 is not available */ |
1775 | if (!socket_ipv6_is_supported()) | |
1776 | return 0; | |
1777 | ||
15dee3f0 LP |
1778 | if (link->flags & IFF_LOOPBACK) |
1779 | return 0; | |
1780 | ||
8add5f79 NO |
1781 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1782 | return 0; | |
1783 | ||
63c372cb | 1784 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding"); |
15dee3f0 LP |
1785 | v = one_zero(link_ipv6_forward_enabled(link)); |
1786 | ||
4c1fc3e4 | 1787 | r = write_string_file(p, v, 0); |
15dee3f0 LP |
1788 | if (r < 0) { |
1789 | /* If the right value is set anyway, don't complain */ | |
1790 | if (verify_one_line_file(p, v) > 0) | |
1791 | return 0; | |
1792 | ||
769d324c | 1793 | log_link_warning_errno(link, r, "Cannot configure IPv6 forwarding for interface: %m"); |
15dee3f0 | 1794 | } |
5a8bcb67 LP |
1795 | |
1796 | return 0; | |
1797 | } | |
1798 | ||
49092e22 | 1799 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 LP |
1800 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; |
1801 | IPv6PrivacyExtensions s; | |
49092e22 SS |
1802 | const char *p = NULL; |
1803 | int r; | |
1804 | ||
1805 | /* Make this a NOP if IPv6 is not available */ | |
1806 | if (!socket_ipv6_is_supported()) | |
1807 | return 0; | |
1808 | ||
1f0d9695 LP |
1809 | s = link_ipv6_privacy_extensions(link); |
1810 | if (s == _IPV6_PRIVACY_EXTENSIONS_INVALID) | |
49092e22 SS |
1811 | return 0; |
1812 | ||
1813 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
1814 | xsprintf(buf, "%u", link->network->ipv6_privacy_extensions); | |
1815 | ||
4c1fc3e4 | 1816 | r = write_string_file(p, buf, 0); |
1f0d9695 LP |
1817 | if (r < 0) { |
1818 | /* If the right value is set anyway, don't complain */ | |
1819 | if (verify_one_line_file(p, buf) > 0) | |
1820 | return 0; | |
1821 | ||
49092e22 | 1822 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
1f0d9695 | 1823 | } |
49092e22 SS |
1824 | |
1825 | return 0; | |
1826 | } | |
1827 | ||
4f2e437a SS |
1828 | static int link_set_ipv6_accept_ra(Link *link) { |
1829 | const char *p = NULL, *v = NULL; | |
4f2e437a SS |
1830 | int r; |
1831 | ||
1832 | /* Make this a NOP if IPv6 is not available */ | |
1833 | if (!socket_ipv6_is_supported()) | |
1834 | return 0; | |
1835 | ||
1836 | if (link->flags & IFF_LOOPBACK) | |
1837 | return 0; | |
1838 | ||
6a512301 GM |
1839 | /* If unset use system default (enabled if local forwarding is disabled. |
1840 | * disabled if local forwarding is enabled). | |
1841 | * If set, ignore or enforce RA independent of local forwarding state. | |
4f2e437a | 1842 | */ |
ebf98081 | 1843 | if (link->network->ipv6_accept_ra < 0) |
6a512301 GM |
1844 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ |
1845 | v = "1"; | |
ebf98081 | 1846 | else if (link->network->ipv6_accept_ra > 0) |
6a512301 GM |
1847 | /* "2" means accept RA even if ip_forward is enabled */ |
1848 | v = "2"; | |
ebf98081 | 1849 | else |
6a512301 GM |
1850 | /* "0" means ignore RA */ |
1851 | v = "0"; | |
ebf98081 | 1852 | |
4f2e437a | 1853 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); |
4f2e437a SS |
1854 | |
1855 | r = write_string_file(p, v, 0); | |
1856 | if (r < 0) { | |
1857 | /* If the right value is set anyway, don't complain */ | |
1858 | if (verify_one_line_file(p, v) > 0) | |
1859 | return 0; | |
1860 | ||
1861 | log_link_warning_errno(link, r, "Cannot configure IPv6 accept_ra for interface: %m"); | |
1862 | } | |
1863 | ||
1864 | return 0; | |
1865 | } | |
1866 | ||
8749cbcd SS |
1867 | static int link_set_ipv6_dad_transmits(Link *link) { |
1868 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; | |
1869 | const char *p = NULL; | |
1870 | int r; | |
1871 | ||
1872 | /* Make this a NOP if IPv6 is not available */ | |
1873 | if (!socket_ipv6_is_supported()) | |
1874 | return 0; | |
1875 | ||
1876 | if (link->flags & IFF_LOOPBACK) | |
1877 | return 0; | |
1878 | ||
1879 | if (link->network->ipv6_dad_transmits < 0) | |
1880 | return 0; | |
1881 | ||
1882 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); | |
1883 | ||
1884 | xsprintf(buf, "%u", link->network->ipv6_dad_transmits); | |
1885 | ||
1886 | r = write_string_file(p, buf, 0); | |
1887 | if (r < 0) { | |
1888 | /* If the right value is set anyway, don't complain */ | |
1889 | if (verify_one_line_file(p, buf) > 0) | |
1890 | return 0; | |
1891 | ||
1892 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); | |
1893 | } | |
1894 | ||
1895 | return 0; | |
1896 | } | |
1897 | ||
a748b692 | 1898 | static int link_configure(Link *link) { |
02b59d57 TG |
1899 | int r; |
1900 | ||
ef1ba606 | 1901 | assert(link); |
b22d8a00 | 1902 | assert(link->network); |
8434fd5c | 1903 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 1904 | |
b98b483b AR |
1905 | r = link_set_bridge_fdb(link); |
1906 | if (r < 0) | |
1907 | return r; | |
1908 | ||
769d324c LP |
1909 | r = link_set_ipv4_forward(link); |
1910 | if (r < 0) | |
1911 | return r; | |
1912 | ||
1913 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
1914 | if (r < 0) |
1915 | return r; | |
1916 | ||
49092e22 SS |
1917 | r = link_set_ipv6_privacy_extensions(link); |
1918 | if (r < 0) | |
1919 | return r; | |
1920 | ||
4f2e437a SS |
1921 | r = link_set_ipv6_accept_ra(link); |
1922 | if (r < 0) | |
1923 | return r; | |
1924 | ||
8749cbcd SS |
1925 | r = link_set_ipv6_dad_transmits(link); |
1926 | if (r < 0) | |
1927 | return r; | |
1928 | ||
78c958f8 | 1929 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 1930 | r = ipv4ll_configure(link); |
eb34d4af TG |
1931 | if (r < 0) |
1932 | return r; | |
1933 | } | |
1934 | ||
78c958f8 | 1935 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 1936 | r = dhcp4_configure(link); |
eb34d4af TG |
1937 | if (r < 0) |
1938 | return r; | |
eb34d4af TG |
1939 | } |
1940 | ||
78c958f8 | 1941 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
1942 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
1943 | if (r < 0) | |
1944 | return r; | |
1945 | ||
1946 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
1947 | if (r < 0) | |
1948 | return r; | |
dd43110f TG |
1949 | } |
1950 | ||
78c958f8 | 1951 | if (link_dhcp6_enabled(link)) { |
5c79bd79 | 1952 | r = icmp6_configure(link); |
4138fb2c PF |
1953 | if (r < 0) |
1954 | return r; | |
1955 | } | |
1956 | ||
ce43e484 SS |
1957 | if (link_lldp_enabled(link)) { |
1958 | r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp); | |
1959 | if (r < 0) | |
1960 | return r; | |
1961 | ||
1962 | r = sd_lldp_attach_event(link->lldp, NULL, 0); | |
1963 | if (r < 0) | |
1964 | return r; | |
49699bac SS |
1965 | |
1966 | r = sd_lldp_set_callback(link->lldp, | |
1967 | lldp_handler, link); | |
1968 | if (r < 0) | |
1969 | return r; | |
ce43e484 SS |
1970 | } |
1971 | ||
a61bb41c | 1972 | if (link_has_carrier(link)) { |
1e9be60b TG |
1973 | r = link_acquire_conf(link); |
1974 | if (r < 0) | |
1975 | return r; | |
cc544d5f | 1976 | } |
1e9be60b | 1977 | |
3f265037 | 1978 | return link_enter_join_netdev(link); |
505f8da7 TG |
1979 | } |
1980 | ||
1c4baffc | 1981 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 1982 | void *userdata) { |
5da8149f | 1983 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 1984 | Network *network; |
505f8da7 TG |
1985 | int r; |
1986 | ||
1987 | assert(link); | |
1988 | assert(link->ifname); | |
1989 | assert(link->manager); | |
1990 | ||
8434fd5c | 1991 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 1992 | return 1; |
505f8da7 | 1993 | |
6a7a4e4d | 1994 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 1995 | |
0d4ad91d AR |
1996 | r = link_new_bound_by_list(link); |
1997 | if (r < 0) | |
1998 | return r; | |
1999 | ||
2000 | r = link_handle_bound_by_list(link); | |
2001 | if (r < 0) | |
2002 | return r; | |
2003 | ||
3c9b8860 TG |
2004 | r = network_get(link->manager, link->udev_device, link->ifname, |
2005 | &link->mac, &network); | |
57bd6899 TG |
2006 | if (r == -ENOENT) { |
2007 | link_enter_unmanaged(link); | |
5da8149f | 2008 | return 1; |
57bd6899 TG |
2009 | } else if (r < 0) |
2010 | return r; | |
505f8da7 | 2011 | |
bd2efe92 | 2012 | if (link->flags & IFF_LOOPBACK) { |
d0d6a4cd | 2013 | if (network->link_local != ADDRESS_FAMILY_NO) |
6a7a4e4d | 2014 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); |
78c958f8 | 2015 | |
cb9fc36a | 2016 | if (network->dhcp != ADDRESS_FAMILY_NO) |
6a7a4e4d | 2017 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); |
78c958f8 TG |
2018 | |
2019 | if (network->dhcp_server) | |
6a7a4e4d | 2020 | log_link_debug(link, "Ignoring DHCP server for loopback link"); |
bd2efe92 TG |
2021 | } |
2022 | ||
505f8da7 TG |
2023 | r = network_apply(link->manager, network, link); |
2024 | if (r < 0) | |
2025 | return r; | |
2026 | ||
0d4ad91d AR |
2027 | r = link_new_bound_to_list(link); |
2028 | if (r < 0) | |
2029 | return r; | |
2030 | ||
a748b692 TG |
2031 | r = link_configure(link); |
2032 | if (r < 0) | |
2033 | return r; | |
2034 | ||
5da8149f | 2035 | return 1; |
505f8da7 TG |
2036 | } |
2037 | ||
4f561e8e | 2038 | int link_initialized(Link *link, struct udev_device *device) { |
1c4baffc | 2039 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f561e8e TG |
2040 | int r; |
2041 | ||
2042 | assert(link); | |
2043 | assert(link->manager); | |
2044 | assert(link->manager->rtnl); | |
2045 | assert(device); | |
2046 | ||
8434fd5c | 2047 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2048 | return 0; |
2049 | ||
679b3605 TG |
2050 | if (link->udev_device) |
2051 | return 0; | |
2052 | ||
79008bdd | 2053 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
2054 | |
2055 | link->udev_device = udev_device_ref(device); | |
2056 | ||
3c9b8860 TG |
2057 | /* udev has initialized the link, but we don't know if we have yet |
2058 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2059 | * when it returns we know that the pending NEWLINKs have already been | |
2060 | * processed and that we are up-to-date */ | |
4f561e8e | 2061 | |
3c9b8860 TG |
2062 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2063 | link->ifindex); | |
4f561e8e TG |
2064 | if (r < 0) |
2065 | return r; | |
2066 | ||
1c4baffc | 2067 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 2068 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
2069 | if (r < 0) |
2070 | return r; | |
2071 | ||
5da8149f TG |
2072 | link_ref(link); |
2073 | ||
4f561e8e TG |
2074 | return 0; |
2075 | } | |
2076 | ||
1c4baffc | 2077 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
2078 | Link *link; |
2079 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
2080 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
2081 | int r; | |
2082 | ||
2083 | assert(m); | |
fbbeb65a | 2084 | assert(m->rtnl); |
505f8da7 TG |
2085 | assert(message); |
2086 | assert(ret); | |
2087 | ||
2088 | r = link_new(m, message, ret); | |
2089 | if (r < 0) | |
2090 | return r; | |
2091 | ||
2092 | link = *ret; | |
2093 | ||
6a7a4e4d | 2094 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2095 | |
75f86906 | 2096 | if (detect_container() <= 0) { |
505f8da7 | 2097 | /* not in a container, udev will be around */ |
ae06ab10 | 2098 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 2099 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
5c416fc4 TG |
2100 | if (!device) { |
2101 | r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
2102 | goto failed; | |
2103 | } | |
505f8da7 | 2104 | |
3c4cb064 | 2105 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 2106 | /* not yet ready */ |
79008bdd | 2107 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2108 | return 0; |
3c4cb064 | 2109 | } |
505f8da7 | 2110 | |
4f561e8e TG |
2111 | r = link_initialized(link, device); |
2112 | if (r < 0) | |
5c416fc4 | 2113 | goto failed; |
4f561e8e | 2114 | } else { |
5da8149f TG |
2115 | /* we are calling a callback directly, so must take a ref */ |
2116 | link_ref(link); | |
2117 | ||
4f561e8e TG |
2118 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
2119 | if (r < 0) | |
5c416fc4 | 2120 | goto failed; |
4f561e8e | 2121 | } |
505f8da7 | 2122 | |
a748b692 | 2123 | return 0; |
5c416fc4 TG |
2124 | failed: |
2125 | link_enter_failed(link); | |
2126 | return r; | |
a748b692 TG |
2127 | } |
2128 | ||
9c0a72f9 TG |
2129 | static int link_carrier_gained(Link *link) { |
2130 | int r; | |
2131 | ||
2132 | assert(link); | |
2133 | ||
2134 | if (link->network) { | |
2135 | r = link_acquire_conf(link); | |
2136 | if (r < 0) { | |
2137 | link_enter_failed(link); | |
2138 | return r; | |
2139 | } | |
2140 | } | |
2141 | ||
0d4ad91d AR |
2142 | r = link_handle_bound_by_list(link); |
2143 | if (r < 0) | |
2144 | return r; | |
2145 | ||
9c0a72f9 TG |
2146 | return 0; |
2147 | } | |
2148 | ||
2149 | static int link_carrier_lost(Link *link) { | |
2150 | int r; | |
2151 | ||
2152 | assert(link); | |
2153 | ||
2154 | r = link_stop_clients(link); | |
2155 | if (r < 0) { | |
2156 | link_enter_failed(link); | |
2157 | return r; | |
2158 | } | |
2159 | ||
0d4ad91d AR |
2160 | r = link_handle_bound_by_list(link); |
2161 | if (r < 0) | |
2162 | return r; | |
2163 | ||
9c0a72f9 TG |
2164 | return 0; |
2165 | } | |
2166 | ||
2167 | int link_carrier_reset(Link *link) { | |
2168 | int r; | |
2169 | ||
2170 | assert(link); | |
2171 | ||
2172 | if (link_has_carrier(link)) { | |
2173 | r = link_carrier_lost(link); | |
2174 | if (r < 0) | |
2175 | return r; | |
2176 | ||
2177 | r = link_carrier_gained(link); | |
2178 | if (r < 0) | |
2179 | return r; | |
2180 | ||
6a7a4e4d | 2181 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2182 | } |
2183 | ||
2184 | return 0; | |
2185 | } | |
2186 | ||
2187 | ||
1c4baffc | 2188 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 2189 | struct ether_addr mac; |
ca4e095a | 2190 | const char *ifname; |
afe7fd56 | 2191 | uint32_t mtu; |
a61bb41c | 2192 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
2193 | int r; |
2194 | ||
dd3efc09 | 2195 | assert(link); |
b8941f74 | 2196 | assert(link->ifname); |
22936833 TG |
2197 | assert(m); |
2198 | ||
7619683b TG |
2199 | if (link->state == LINK_STATE_LINGER) { |
2200 | link_ref(link); | |
6a7a4e4d | 2201 | log_link_info(link, "Link readded"); |
e331e246 | 2202 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
2203 | |
2204 | r = link_new_carrier_maps(link); | |
2205 | if (r < 0) | |
2206 | return r; | |
7619683b TG |
2207 | } |
2208 | ||
1c4baffc | 2209 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2210 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 2211 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 2212 | |
0d4ad91d AR |
2213 | link_free_carrier_maps(link); |
2214 | ||
2fc09a9c DM |
2215 | r = free_and_strdup(&link->ifname, ifname); |
2216 | if (r < 0) | |
2217 | return r; | |
0d4ad91d AR |
2218 | |
2219 | r = link_new_carrier_maps(link); | |
2220 | if (r < 0) | |
2221 | return r; | |
b8941f74 TG |
2222 | } |
2223 | ||
1c4baffc | 2224 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2225 | if (r >= 0 && mtu > 0) { |
2226 | link->mtu = mtu; | |
2227 | if (!link->original_mtu) { | |
2228 | link->original_mtu = mtu; | |
6a7a4e4d | 2229 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2230 | } |
2231 | ||
2232 | if (link->dhcp_client) { | |
3c9b8860 TG |
2233 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2234 | link->mtu); | |
afe7fd56 | 2235 | if (r < 0) { |
6a7a4e4d | 2236 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
2237 | return r; |
2238 | } | |
2239 | } | |
9842de0d | 2240 | } |
69629de9 | 2241 | |
e9189a1f TG |
2242 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2243 | set, simply ignore them. */ | |
1c4baffc | 2244 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2245 | if (r >= 0) { |
3c9b8860 TG |
2246 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2247 | ETH_ALEN)) { | |
c49b33ac | 2248 | |
3c9b8860 TG |
2249 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2250 | ETH_ALEN); | |
c49b33ac | 2251 | |
79008bdd | 2252 | log_link_debug(link, "MAC address: " |
20861203 TG |
2253 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
2254 | mac.ether_addr_octet[0], | |
2255 | mac.ether_addr_octet[1], | |
2256 | mac.ether_addr_octet[2], | |
2257 | mac.ether_addr_octet[3], | |
2258 | mac.ether_addr_octet[4], | |
2259 | mac.ether_addr_octet[5]); | |
c49b33ac | 2260 | |
20861203 TG |
2261 | if (link->ipv4ll) { |
2262 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
2263 | if (r < 0) |
2264 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 2265 | } |
c49b33ac | 2266 | |
20861203 | 2267 | if (link->dhcp_client) { |
3c9b8860 | 2268 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
2269 | (const uint8_t *) &link->mac, |
2270 | sizeof (link->mac), | |
2271 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2272 | if (r < 0) |
2273 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
c49b33ac | 2274 | } |
4138fb2c PF |
2275 | |
2276 | if (link->dhcp6_client) { | |
2277 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
2278 | (const uint8_t *) &link->mac, |
2279 | sizeof (link->mac), | |
2280 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2281 | if (r < 0) |
2282 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
4138fb2c | 2283 | } |
c49b33ac | 2284 | } |
4f882b2a TG |
2285 | } |
2286 | ||
a61bb41c TG |
2287 | had_carrier = link_has_carrier(link); |
2288 | ||
2289 | r = link_update_flags(link, m); | |
2290 | if (r < 0) | |
2291 | return r; | |
2292 | ||
2293 | carrier_gained = !had_carrier && link_has_carrier(link); | |
2294 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2295 | ||
2296 | if (carrier_gained) { | |
6a7a4e4d | 2297 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2298 | |
9c0a72f9 TG |
2299 | r = link_carrier_gained(link); |
2300 | if (r < 0) | |
2301 | return r; | |
a61bb41c | 2302 | } else if (carrier_lost) { |
6a7a4e4d | 2303 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2304 | |
9c0a72f9 TG |
2305 | r = link_carrier_lost(link); |
2306 | if (r < 0) | |
a61bb41c | 2307 | return r; |
9c0a72f9 | 2308 | |
a61bb41c TG |
2309 | } |
2310 | ||
2311 | return 0; | |
dd3efc09 | 2312 | } |
fe8db0c5 | 2313 | |
e375dcde | 2314 | static void link_update_operstate(Link *link) { |
e331e246 | 2315 | LinkOperationalState operstate; |
e375dcde TG |
2316 | assert(link); |
2317 | ||
2318 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
e331e246 | 2319 | operstate = LINK_OPERSTATE_DORMANT; |
a61bb41c | 2320 | else if (link_has_carrier(link)) { |
e375dcde TG |
2321 | Address *address; |
2322 | uint8_t scope = RT_SCOPE_NOWHERE; | |
cf1d700d | 2323 | Iterator i; |
e375dcde TG |
2324 | |
2325 | /* if we have carrier, check what addresses we have */ | |
cf1d700d | 2326 | SET_FOREACH(address, link->addresses, i) { |
ce6c77eb | 2327 | if (!address_is_ready(address)) |
81163121 TG |
2328 | continue; |
2329 | ||
e375dcde TG |
2330 | if (address->scope < scope) |
2331 | scope = address->scope; | |
2332 | } | |
2333 | ||
adda1ed9 TG |
2334 | /* for operstate we also take foreign addresses into account */ |
2335 | SET_FOREACH(address, link->addresses_foreign, i) { | |
2336 | if (!address_is_ready(address)) | |
2337 | continue; | |
2338 | ||
2339 | if (address->scope < scope) | |
2340 | scope = address->scope; | |
2341 | } | |
2342 | ||
e375dcde TG |
2343 | if (scope < RT_SCOPE_SITE) |
2344 | /* universally accessible addresses found */ | |
e331e246 | 2345 | operstate = LINK_OPERSTATE_ROUTABLE; |
e375dcde TG |
2346 | else if (scope < RT_SCOPE_HOST) |
2347 | /* only link or site local addresses found */ | |
e331e246 | 2348 | operstate = LINK_OPERSTATE_DEGRADED; |
e375dcde TG |
2349 | else |
2350 | /* no useful addresses found */ | |
e331e246 | 2351 | operstate = LINK_OPERSTATE_CARRIER; |
54cba0b1 | 2352 | } else if (link->flags & IFF_UP) |
e331e246 | 2353 | operstate = LINK_OPERSTATE_NO_CARRIER; |
54cba0b1 | 2354 | else |
e331e246 TG |
2355 | operstate = LINK_OPERSTATE_OFF; |
2356 | ||
2357 | if (link->operstate != operstate) { | |
2358 | link->operstate = operstate; | |
2359 | link_send_changed(link, "OperationalState", NULL); | |
2360 | } | |
e375dcde TG |
2361 | } |
2362 | ||
fe8db0c5 | 2363 | int link_save(Link *link) { |
68a8723c | 2364 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2365 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2366 | const char *admin_state, *oper_state; |
e7780c8d TG |
2367 | Address *a; |
2368 | Iterator i; | |
fe8db0c5 TG |
2369 | int r; |
2370 | ||
2371 | assert(link); | |
2372 | assert(link->state_file); | |
68a8723c | 2373 | assert(link->lease_file); |
bbf7c048 TG |
2374 | assert(link->manager); |
2375 | ||
e375dcde TG |
2376 | link_update_operstate(link); |
2377 | ||
bbf7c048 TG |
2378 | r = manager_save(link->manager); |
2379 | if (r < 0) | |
2380 | return r; | |
fe8db0c5 | 2381 | |
370e9930 TG |
2382 | if (link->state == LINK_STATE_LINGER) { |
2383 | unlink(link->state_file); | |
2384 | return 0; | |
2385 | } | |
2386 | ||
deb2e523 TG |
2387 | admin_state = link_state_to_string(link->state); |
2388 | assert(admin_state); | |
2389 | ||
e375dcde TG |
2390 | oper_state = link_operstate_to_string(link->operstate); |
2391 | assert(oper_state); | |
deb2e523 | 2392 | |
fe8db0c5 TG |
2393 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2394 | if (r < 0) | |
6a7a4e4d | 2395 | goto fail; |
fe8db0c5 TG |
2396 | |
2397 | fchmod(fileno(f), 0644); | |
2398 | ||
2399 | fprintf(f, | |
2400 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2401 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
2402 | "OPER_STATE=%s\n", |
2403 | admin_state, oper_state); | |
fe8db0c5 | 2404 | |
bcb7a07e | 2405 | if (link->network) { |
ea352b40 LP |
2406 | char **address, **domain; |
2407 | bool space; | |
07bdc70d PF |
2408 | sd_dhcp6_lease *dhcp6_lease = NULL; |
2409 | ||
2410 | if (link->dhcp6_client) { | |
2411 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, | |
2412 | &dhcp6_lease); | |
2413 | if (r < 0) | |
2414 | log_link_debug(link, "No DHCPv6 lease"); | |
2415 | } | |
b0e39c82 | 2416 | |
adc5b2e2 TG |
2417 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2418 | ||
b0e39c82 | 2419 | fputs("DNS=", f); |
ea352b40 LP |
2420 | space = false; |
2421 | STRV_FOREACH(address, link->network->dns) { | |
2422 | if (space) | |
2423 | fputc(' ', f); | |
2424 | fputs(*address, f); | |
2425 | space = true; | |
2426 | } | |
d5314fff | 2427 | |
b0e39c82 TG |
2428 | if (link->network->dhcp_dns && |
2429 | link->dhcp_lease) { | |
2430 | const struct in_addr *addresses; | |
2431 | ||
2432 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
2433 | if (r > 0) { | |
ea352b40 LP |
2434 | if (space) |
2435 | fputc(' ', f); | |
b0e39c82 | 2436 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2437 | space = true; |
2438 | } | |
2439 | } | |
2440 | ||
2441 | if (link->network->dhcp_dns && dhcp6_lease) { | |
2442 | struct in6_addr *in6_addrs; | |
2443 | ||
2444 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
2445 | if (r > 0) { | |
2446 | if (space) | |
2447 | fputc(' ', f); | |
2448 | serialize_in6_addrs(f, in6_addrs, r); | |
b0e39c82 TG |
2449 | } |
2450 | } | |
2451 | ||
b0e39c82 TG |
2452 | fputs("\n", f); |
2453 | ||
2454 | fprintf(f, "NTP="); | |
ea352b40 LP |
2455 | space = false; |
2456 | STRV_FOREACH(address, link->network->ntp) { | |
2457 | if (space) | |
2458 | fputc(' ', f); | |
2459 | fputs(*address, f); | |
2460 | space = true; | |
2461 | } | |
d5314fff | 2462 | |
b0e39c82 TG |
2463 | if (link->network->dhcp_ntp && |
2464 | link->dhcp_lease) { | |
2465 | const struct in_addr *addresses; | |
2466 | ||
2467 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
2468 | if (r > 0) { | |
ea352b40 LP |
2469 | if (space) |
2470 | fputc(' ', f); | |
b0e39c82 | 2471 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
2472 | space = true; |
2473 | } | |
2474 | } | |
2475 | ||
2476 | if (link->network->dhcp_ntp && dhcp6_lease) { | |
2477 | struct in6_addr *in6_addrs; | |
2478 | char **hosts; | |
2479 | char **hostname; | |
2480 | ||
2481 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
2482 | &in6_addrs); | |
2483 | if (r > 0) { | |
2484 | if (space) | |
2485 | fputc(' ', f); | |
2486 | serialize_in6_addrs(f, in6_addrs, r); | |
2487 | space = true; | |
2488 | } | |
2489 | ||
2490 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
2491 | if (r > 0) { | |
2492 | STRV_FOREACH(hostname, hosts) { | |
2493 | if (space) | |
2494 | fputc(' ', f); | |
2495 | fputs(*hostname, f); | |
2496 | space = true; | |
2497 | } | |
b0e39c82 TG |
2498 | } |
2499 | } | |
2500 | ||
b0e39c82 | 2501 | fputs("\n", f); |
bd8f6538 | 2502 | |
6192b846 | 2503 | fprintf(f, "DOMAINS="); |
ea352b40 LP |
2504 | space = false; |
2505 | STRV_FOREACH(domain, link->network->domains) { | |
2506 | if (space) | |
2507 | fputc(' ', f); | |
2508 | fputs(*domain, f); | |
2509 | space = true; | |
2510 | } | |
d5314fff | 2511 | |
ad0734e8 | 2512 | if (link->network->dhcp_domains && |
9b4d1882 TG |
2513 | link->dhcp_lease) { |
2514 | const char *domainname; | |
2515 | ||
2516 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
6192b846 | 2517 | if (r >= 0) { |
ea352b40 LP |
2518 | if (space) |
2519 | fputc(' ', f); | |
6192b846 | 2520 | fputs(domainname, f); |
07bdc70d PF |
2521 | space = true; |
2522 | } | |
2523 | } | |
2524 | ||
2525 | if (link->network->dhcp_domains && dhcp6_lease) { | |
2526 | char **domains; | |
2527 | ||
2528 | r = sd_dhcp6_lease_get_domains(dhcp6_lease, &domains); | |
2529 | if (r >= 0) { | |
2530 | STRV_FOREACH(domain, domains) { | |
2531 | if (space) | |
2532 | fputc(' ', f); | |
2533 | fputs(*domain, f); | |
2534 | space = true; | |
2535 | } | |
6192b846 | 2536 | } |
9b4d1882 TG |
2537 | } |
2538 | ||
6192b846 TG |
2539 | fputs("\n", f); |
2540 | ||
67272d15 TG |
2541 | fprintf(f, "WILDCARD_DOMAIN=%s\n", |
2542 | yes_no(link->network->wildcard_domain)); | |
2543 | ||
3c9b8860 | 2544 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 2545 | resolve_support_to_string(link->network->llmnr)); |
e7780c8d TG |
2546 | |
2547 | fprintf(f, "ADDRESSES="); | |
2548 | space = false; | |
2549 | SET_FOREACH(a, link->addresses, i) { | |
2550 | _cleanup_free_ char *address_str = NULL; | |
2551 | ||
2552 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
2553 | if (r < 0) | |
2554 | goto fail; | |
2555 | ||
2556 | if (space) | |
2557 | fputc(' ', f); | |
2558 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); | |
2559 | space = true; | |
2560 | } | |
2561 | ||
2562 | fputs("\n", f); | |
bcb7a07e | 2563 | } |
7374f9d8 | 2564 | |
0d4ad91d AR |
2565 | if (!hashmap_isempty(link->bound_to_links)) { |
2566 | Link *carrier; | |
0d4ad91d AR |
2567 | bool space = false; |
2568 | ||
2569 | fputs("CARRIER_BOUND_TO=", f); | |
2570 | HASHMAP_FOREACH(carrier, link->bound_to_links, i) { | |
2571 | if (space) | |
2572 | fputc(' ', f); | |
2573 | fputs(carrier->ifname, f); | |
2574 | space = true; | |
2575 | } | |
2576 | ||
2577 | fputs("\n", f); | |
2578 | } | |
2579 | ||
2580 | if (!hashmap_isempty(link->bound_by_links)) { | |
2581 | Link *carrier; | |
0d4ad91d AR |
2582 | bool space = false; |
2583 | ||
2584 | fputs("CARRIER_BOUND_BY=", f); | |
0d4ad91d AR |
2585 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
2586 | if (space) | |
2587 | fputc(' ', f); | |
2588 | fputs(carrier->ifname, f); | |
2589 | space = true; | |
2590 | } | |
2591 | ||
2592 | fputs("\n", f); | |
2593 | } | |
2594 | ||
8eb9058d LP |
2595 | if (link->dhcp_lease) { |
2596 | const char *tz = NULL; | |
2597 | ||
2598 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); | |
2599 | if (r >= 0) | |
2600 | fprintf(f, "TIMEZONE=%s\n", tz); | |
2601 | } | |
2602 | ||
fe8db0c5 | 2603 | if (link->dhcp_lease) { |
d9876a52 TG |
2604 | assert(link->network); |
2605 | ||
bd91b83e | 2606 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 2607 | if (r < 0) |
c2d6bd61 | 2608 | goto fail; |
fe8db0c5 | 2609 | |
7374f9d8 | 2610 | fprintf(f, |
b0e39c82 TG |
2611 | "DHCP_LEASE=%s\n", |
2612 | link->lease_file); | |
deb2e523 | 2613 | } else |
68a8723c | 2614 | unlink(link->lease_file); |
fe8db0c5 | 2615 | |
49699bac SS |
2616 | if (link->lldp) { |
2617 | assert(link->network); | |
2618 | ||
2619 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
2620 | if (r < 0) | |
2621 | goto fail; | |
2622 | ||
2623 | fprintf(f, | |
2624 | "LLDP_FILE=%s\n", | |
2625 | link->lldp_file); | |
2626 | } else | |
2627 | unlink(link->lldp_file); | |
2628 | ||
c2d6bd61 LP |
2629 | r = fflush_and_check(f); |
2630 | if (r < 0) | |
2631 | goto fail; | |
fe8db0c5 | 2632 | |
c2d6bd61 | 2633 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 2634 | r = -errno; |
c2d6bd61 | 2635 | goto fail; |
fe8db0c5 TG |
2636 | } |
2637 | ||
c2d6bd61 | 2638 | return 0; |
dacd6cee | 2639 | |
c2d6bd61 | 2640 | fail: |
6a7a4e4d | 2641 | (void) unlink(link->state_file); |
6a7a4e4d LP |
2642 | if (temp_path) |
2643 | (void) unlink(temp_path); | |
2644 | ||
dacd6cee | 2645 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
2646 | } |
2647 | ||
2648 | static const char* const link_state_table[_LINK_STATE_MAX] = { | |
8434fd5c | 2649 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
2650 | [LINK_STATE_ENSLAVING] = "configuring", |
2651 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
2652 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
2653 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 2654 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2655 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2656 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2657 | }; |
2658 | ||
2659 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
2660 | |
2661 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
2662 | [LINK_OPERSTATE_OFF] = "off", |
2663 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
2664 | [LINK_OPERSTATE_DORMANT] = "dormant", |
2665 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
2666 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
2667 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
2668 | }; | |
2669 | ||
2670 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |