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f579559b TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <netinet/ether.h> | |
23 | #include <linux/if.h> | |
4cc7a82c | 24 | #include <unistd.h> |
f579559b | 25 | |
f579559b | 26 | #include "util.h" |
505f8da7 | 27 | #include "virt.h" |
5a8bcb67 | 28 | #include "fileio.h" |
fe027299 | 29 | #include "socket-util.h" |
1346b1f0 | 30 | #include "bus-util.h" |
5a8bcb67 | 31 | #include "udev-util.h" |
c6f7c917 | 32 | #include "network-internal.h" |
5a8bcb67 LP |
33 | #include "networkd-link.h" |
34 | #include "networkd-netdev.h" | |
fe8db0c5 | 35 | |
a97dcc12 | 36 | bool link_dhcp6_enabled(Link *link) { |
78c958f8 TG |
37 | if (link->flags & IFF_LOOPBACK) |
38 | return false; | |
39 | ||
40 | if (!link->network) | |
41 | return false; | |
42 | ||
e0ee46f2 | 43 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
44 | } |
45 | ||
a97dcc12 | 46 | bool link_dhcp4_enabled(Link *link) { |
78c958f8 TG |
47 | if (link->flags & IFF_LOOPBACK) |
48 | return false; | |
49 | ||
50 | if (!link->network) | |
51 | return false; | |
52 | ||
e0ee46f2 | 53 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
54 | } |
55 | ||
a97dcc12 | 56 | bool link_dhcp4_server_enabled(Link *link) { |
78c958f8 TG |
57 | if (link->flags & IFF_LOOPBACK) |
58 | return false; | |
59 | ||
60 | if (!link->network) | |
61 | return false; | |
62 | ||
63 | return link->network->dhcp_server; | |
64 | } | |
65 | ||
a97dcc12 | 66 | bool link_ipv4ll_enabled(Link *link) { |
78c958f8 TG |
67 | if (link->flags & IFF_LOOPBACK) |
68 | return false; | |
69 | ||
70 | if (!link->network) | |
71 | return false; | |
72 | ||
e0ee46f2 | 73 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
74 | } |
75 | ||
76 | bool link_ipv6ll_enabled(Link *link) { | |
77 | if (link->flags & IFF_LOOPBACK) | |
78 | return false; | |
79 | ||
80 | if (!link->network) | |
81 | return false; | |
82 | ||
e0ee46f2 | 83 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
84 | } |
85 | ||
a97dcc12 | 86 | bool link_lldp_enabled(Link *link) { |
ce43e484 SS |
87 | if (link->flags & IFF_LOOPBACK) |
88 | return false; | |
89 | ||
90 | if (!link->network) | |
91 | return false; | |
92 | ||
5a8bcb67 | 93 | if (link->network->bridge) |
ce43e484 SS |
94 | return false; |
95 | ||
96 | return link->network->lldp; | |
97 | } | |
98 | ||
769d324c | 99 | static bool link_ipv4_forward_enabled(Link *link) { |
5a8bcb67 LP |
100 | if (link->flags & IFF_LOOPBACK) |
101 | return false; | |
102 | ||
103 | if (!link->network) | |
104 | return false; | |
105 | ||
e0ee46f2 | 106 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
107 | } |
108 | ||
109 | static bool link_ipv6_forward_enabled(Link *link) { | |
110 | if (link->flags & IFF_LOOPBACK) | |
111 | return false; | |
112 | ||
113 | if (!link->network) | |
114 | return false; | |
115 | ||
e0ee46f2 | 116 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
117 | } |
118 | ||
49092e22 SS |
119 | static bool link_ipv6_privacy_extensions_enabled(Link *link) { |
120 | if (link->flags & IFF_LOOPBACK) | |
121 | return false; | |
122 | ||
123 | if (!link->network) | |
124 | return false; | |
125 | ||
126 | if (link->network->ipv6_privacy_extensions == _IPV6_PRIVACY_EXTENSIONS_INVALID) | |
127 | return false; | |
128 | ||
129 | return link->network->ipv6_privacy_extensions; | |
130 | } | |
131 | ||
51d18171 TG |
132 | #define FLAG_STRING(string, flag, old, new) \ |
133 | (((old ^ new) & flag) \ | |
134 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
135 | : "") | |
136 | ||
1c4baffc | 137 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
138 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
139 | uint8_t operstate; | |
140 | int r; | |
141 | ||
142 | assert(link); | |
143 | ||
144 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
145 | if (r < 0) |
146 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 147 | |
1c4baffc | 148 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
149 | if (r < 0) |
150 | /* if we got a message without operstate, take it to mean | |
151 | the state was unchanged */ | |
152 | operstate = link->kernel_operstate; | |
153 | ||
154 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
155 | return 0; | |
156 | ||
157 | if (link->flags != flags) { | |
6a7a4e4d | 158 | 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 |
159 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
160 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
161 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
162 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
163 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
164 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
165 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
166 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
167 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
168 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
169 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
170 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
171 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
172 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
173 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
174 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
175 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
176 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
177 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
178 | ||
179 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
180 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
181 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
182 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
183 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
184 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
185 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
186 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
187 | ||
188 | /* link flags are currently at most 18 bits, let's align to | |
189 | * printing 20 */ | |
190 | if (unknown_flags_added) | |
79008bdd | 191 | log_link_debug(link, |
6a7a4e4d | 192 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
193 | unknown_flags_added); |
194 | ||
195 | if (unknown_flags_removed) | |
79008bdd | 196 | log_link_debug(link, |
6a7a4e4d | 197 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
198 | unknown_flags_removed); |
199 | } | |
200 | ||
201 | link->flags = flags; | |
202 | link->kernel_operstate = operstate; | |
203 | ||
204 | link_save(link); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
1c4baffc | 209 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 210 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 211 | uint16_t type; |
ca4e095a | 212 | const char *ifname; |
505f8da7 | 213 | int r, ifindex; |
f579559b | 214 | |
0c2f9b84 | 215 | assert(manager); |
505f8da7 | 216 | assert(message); |
f579559b TG |
217 | assert(ret); |
218 | ||
1c4baffc | 219 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
220 | if (r < 0) |
221 | return r; | |
222 | else if (type != RTM_NEWLINK) | |
223 | return -EINVAL; | |
224 | ||
225 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
226 | if (r < 0) | |
227 | return r; | |
228 | else if (ifindex <= 0) | |
229 | return -EINVAL; | |
230 | ||
1c4baffc | 231 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
232 | if (r < 0) |
233 | return r; | |
234 | ||
f579559b TG |
235 | link = new0(Link, 1); |
236 | if (!link) | |
237 | return -ENOMEM; | |
238 | ||
14b746f7 | 239 | link->n_ref = 1; |
5a3eb5a7 | 240 | link->manager = manager; |
8434fd5c | 241 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 242 | link->rtnl_extended_attrs = true; |
505f8da7 TG |
243 | link->ifindex = ifindex; |
244 | link->ifname = strdup(ifname); | |
245 | if (!link->ifname) | |
246 | return -ENOMEM; | |
f579559b | 247 | |
1c4baffc | 248 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 249 | if (r < 0) |
79008bdd | 250 | log_link_debug(link, "MAC address not found for new device, continuing without"); |
512922f8 | 251 | |
3c9b8860 TG |
252 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%d", |
253 | link->ifindex); | |
fe8db0c5 | 254 | if (r < 0) |
315db1a8 | 255 | return -ENOMEM; |
fe8db0c5 | 256 | |
3c9b8860 TG |
257 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", |
258 | link->ifindex); | |
68a8723c TG |
259 | if (r < 0) |
260 | return -ENOMEM; | |
261 | ||
49699bac SS |
262 | r = asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", |
263 | link->ifindex); | |
264 | if (r < 0) | |
265 | return -ENOMEM; | |
266 | ||
267 | ||
d5099efc | 268 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
269 | if (r < 0) |
270 | return r; | |
271 | ||
272 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
273 | if (r < 0) |
274 | return r; | |
275 | ||
51d18171 TG |
276 | r = link_update_flags(link, message); |
277 | if (r < 0) | |
278 | return r; | |
279 | ||
f579559b TG |
280 | *ret = link; |
281 | link = NULL; | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
14b746f7 | 286 | static void link_free(Link *link) { |
428fd0a7 | 287 | Address *address; |
0d4ad91d AR |
288 | Iterator i; |
289 | Link *carrier; | |
428fd0a7 | 290 | |
f579559b TG |
291 | if (!link) |
292 | return; | |
293 | ||
428fd0a7 TG |
294 | while ((address = link->addresses)) { |
295 | LIST_REMOVE(addresses, link->addresses, address); | |
296 | address_free(address); | |
297 | } | |
298 | ||
11bf3cce LP |
299 | while ((address = link->pool_addresses)) { |
300 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
301 | address_free(address); | |
302 | } | |
303 | ||
bfcdba8d | 304 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 305 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 306 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 307 | |
68a8723c TG |
308 | free(link->lease_file); |
309 | ||
07e10d1a TG |
310 | sd_lldp_free(link->lldp); |
311 | ||
49699bac SS |
312 | free(link->lldp_file); |
313 | ||
56cd007a | 314 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 315 | sd_dhcp6_client_unref(link->dhcp6_client); |
6b66097b | 316 | sd_icmp6_nd_unref(link->icmp6_router_discovery); |
4138fb2c | 317 | |
28aeb07f | 318 | if (link->manager) |
ae06ab10 | 319 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 320 | |
c166a070 | 321 | free(link->ifname); |
68a8723c | 322 | |
fe8db0c5 | 323 | free(link->state_file); |
c166a070 | 324 | |
b5db00e5 UTL |
325 | udev_device_unref(link->udev_device); |
326 | ||
0d4ad91d AR |
327 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
328 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
329 | hashmap_free(link->bound_to_links); | |
330 | ||
331 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
332 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
333 | hashmap_free(link->bound_by_links); | |
334 | ||
f579559b TG |
335 | free(link); |
336 | } | |
337 | ||
14b746f7 TG |
338 | Link *link_unref(Link *link) { |
339 | if (link && (-- link->n_ref <= 0)) | |
340 | link_free(link); | |
341 | ||
342 | return NULL; | |
343 | } | |
344 | ||
345 | Link *link_ref(Link *link) { | |
346 | if (link) | |
347 | assert_se(++ link->n_ref >= 2); | |
348 | ||
349 | return link; | |
350 | } | |
351 | ||
11a7f229 TG |
352 | int link_get(Manager *m, int ifindex, Link **ret) { |
353 | Link *link; | |
11a7f229 TG |
354 | |
355 | assert(m); | |
11a7f229 TG |
356 | assert(ifindex); |
357 | assert(ret); | |
358 | ||
ae06ab10 | 359 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
360 | if (!link) |
361 | return -ENODEV; | |
362 | ||
363 | *ret = link; | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
e331e246 TG |
368 | static void link_set_state(Link *link, LinkState state) { |
369 | assert(link); | |
370 | ||
371 | if (link->state == state) | |
372 | return; | |
373 | ||
374 | link->state = state; | |
375 | ||
376 | link_send_changed(link, "AdministrativeState", NULL); | |
377 | ||
378 | return; | |
379 | } | |
380 | ||
57bd6899 TG |
381 | static void link_enter_unmanaged(Link *link) { |
382 | assert(link); | |
383 | ||
6a7a4e4d | 384 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 385 | |
e331e246 | 386 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 TG |
387 | |
388 | link_save(link); | |
389 | } | |
390 | ||
111bb8f9 TG |
391 | static int link_stop_clients(Link *link) { |
392 | int r = 0, k; | |
393 | ||
394 | assert(link); | |
395 | assert(link->manager); | |
396 | assert(link->manager->event); | |
397 | ||
398 | if (!link->network) | |
399 | return 0; | |
400 | ||
ba179154 | 401 | if (link->dhcp_client) { |
111bb8f9 | 402 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d LP |
403 | if (k < 0) |
404 | r = log_link_warning_errno(link, r, "Could not stop DHCPv4 client: %m"); | |
111bb8f9 TG |
405 | } |
406 | ||
ba179154 | 407 | if (link->ipv4ll) { |
111bb8f9 | 408 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d LP |
409 | if (k < 0) |
410 | r = log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m"); | |
dd43110f TG |
411 | } |
412 | ||
ba179154 | 413 | if(link->icmp6_router_discovery) { |
1873a3d3 PF |
414 | if (link->dhcp6_client) { |
415 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
6a7a4e4d LP |
416 | if (k < 0) |
417 | r = log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); | |
1873a3d3 | 418 | } |
4138fb2c | 419 | |
1873a3d3 | 420 | k = sd_icmp6_nd_stop(link->icmp6_router_discovery); |
6a7a4e4d LP |
421 | if (k < 0) |
422 | r = log_link_warning_errno(link, r, "Could not stop ICMPv6 router discovery: %m"); | |
4138fb2c PF |
423 | } |
424 | ||
ce43e484 | 425 | if (link->lldp) { |
ce43e484 | 426 | k = sd_lldp_stop(link->lldp); |
6a7a4e4d LP |
427 | if (k < 0) |
428 | r = log_link_warning_errno(link, r, "Could not stop LLDP: %m"); | |
ce43e484 SS |
429 | } |
430 | ||
111bb8f9 TG |
431 | return r; |
432 | } | |
433 | ||
b22d8a00 | 434 | void link_enter_failed(Link *link) { |
ef1ba606 | 435 | assert(link); |
f882c247 | 436 | |
370e9930 | 437 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
438 | return; |
439 | ||
6a7a4e4d | 440 | log_link_warning(link, "Failed"); |
449f7554 | 441 | |
e331e246 | 442 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 443 | |
111bb8f9 TG |
444 | link_stop_clients(link); |
445 | ||
fe8db0c5 | 446 | link_save(link); |
f882c247 TG |
447 | } |
448 | ||
4f434938 LP |
449 | static Address* link_find_dhcp_server_address(Link *link) { |
450 | Address *address; | |
451 | ||
452 | assert(link); | |
453 | assert(link->network); | |
454 | ||
d4cdbea5 | 455 | /* The first statically configured address if there is any */ |
4f434938 LP |
456 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
457 | ||
458 | if (address->family != AF_INET) | |
459 | continue; | |
460 | ||
af93291c | 461 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
462 | continue; |
463 | ||
464 | return address; | |
465 | } | |
466 | ||
467 | /* If that didn't work, find a suitable address we got from the pool */ | |
468 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
469 | if (address->family != AF_INET) | |
470 | continue; | |
471 | ||
472 | return address; | |
473 | } | |
474 | ||
475 | return NULL; | |
476 | } | |
477 | ||
dd43110f | 478 | static int link_enter_configured(Link *link) { |
dd43110f TG |
479 | assert(link); |
480 | assert(link->network); | |
481 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
482 | ||
6a7a4e4d | 483 | log_link_info(link, "Configured"); |
dd43110f | 484 | |
e331e246 | 485 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f TG |
486 | |
487 | link_save(link); | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
3c9b8860 TG |
492 | void link_client_handler(Link *link) { |
493 | assert(link); | |
494 | assert(link->network); | |
495 | ||
496 | if (!link->static_configured) | |
497 | return; | |
498 | ||
78c958f8 | 499 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
500 | if (!link->ipv4ll_address || |
501 | !link->ipv4ll_route) | |
502 | return; | |
503 | ||
78c958f8 | 504 | if (link_dhcp4_enabled(link) && !link->dhcp4_configured) |
3c9b8860 TG |
505 | return; |
506 | ||
9fdaa992 TG |
507 | if (link->state != LINK_STATE_CONFIGURED) |
508 | link_enter_configured(link); | |
3c9b8860 TG |
509 | |
510 | return; | |
511 | } | |
512 | ||
1c4baffc | 513 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 514 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
515 | int r; |
516 | ||
3c9b8860 | 517 | assert(link->link_messages > 0); |
370e9930 TG |
518 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
519 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
520 | LINK_STATE_LINGER)); | |
f882c247 | 521 | |
3c9b8860 | 522 | link->link_messages --; |
f882c247 | 523 | |
77a008c0 | 524 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
525 | return 1; |
526 | ||
1c4baffc | 527 | r = sd_netlink_message_get_errno(m); |
c166a070 | 528 | if (r < 0 && r != -EEXIST) |
6a7a4e4d | 529 | log_link_warning_errno(link, r, "%-*s: could not set route: %m", IFNAMSIZ, link->ifname); |
f882c247 | 530 | |
3c9b8860 | 531 | if (link->link_messages == 0) { |
6a7a4e4d | 532 | log_link_debug(link, "Routes set"); |
3c9b8860 TG |
533 | link->static_configured = true; |
534 | link_client_handler(link); | |
dd3efc09 | 535 | } |
f882c247 TG |
536 | |
537 | return 1; | |
538 | } | |
539 | ||
540 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 541 | Route *rt; |
f882c247 TG |
542 | int r; |
543 | ||
544 | assert(link); | |
545 | assert(link->network); | |
ef1ba606 | 546 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 547 | |
e331e246 | 548 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 549 | |
3d3d4255 | 550 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 551 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 552 | if (r < 0) { |
6a7a4e4d | 553 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 554 | link_enter_failed(link); |
a6cc569e TG |
555 | return r; |
556 | } | |
557 | ||
3c9b8860 | 558 | link->link_messages ++; |
8ddbeaa2 | 559 | } |
f5be5601 | 560 | |
3c9b8860 TG |
561 | if (link->link_messages == 0) { |
562 | link->static_configured = true; | |
563 | link_client_handler(link); | |
431ca2ce | 564 | } else |
6a7a4e4d | 565 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
566 | |
567 | return 0; | |
568 | } | |
569 | ||
1c4baffc | 570 | int link_route_drop_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 571 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
572 | int r; |
573 | ||
574 | assert(m); | |
575 | assert(link); | |
576 | assert(link->ifname); | |
577 | ||
5da8149f | 578 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
579 | return 1; |
580 | ||
1c4baffc | 581 | r = sd_netlink_message_get_errno(m); |
b90b025a | 582 | if (r < 0 && r != -ESRCH) |
6a7a4e4d | 583 | log_link_warning_errno(link, r, "%-*s: could not drop route: %m", IFNAMSIZ, link->ifname); |
5c1d3fc9 | 584 | |
5bdd314c | 585 | return 1; |
5c1d3fc9 UTL |
586 | } |
587 | ||
1c4baffc | 588 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 589 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
590 | int r; |
591 | ||
4958aee4 | 592 | assert(rtnl); |
f5be5601 TG |
593 | assert(m); |
594 | assert(link); | |
595 | assert(link->ifname); | |
3c9b8860 | 596 | assert(link->link_messages > 0); |
370e9930 TG |
597 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
598 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 599 | |
3c9b8860 | 600 | link->link_messages --; |
f882c247 | 601 | |
5da8149f | 602 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
603 | return 1; |
604 | ||
1c4baffc | 605 | r = sd_netlink_message_get_errno(m); |
c166a070 | 606 | if (r < 0 && r != -EEXIST) |
6a7a4e4d | 607 | log_link_warning_errno(link, r, "%-*s: could not set address: %m", IFNAMSIZ, link->ifname); |
45af44d4 TG |
608 | else if (r >= 0) |
609 | link_rtnl_process_address(rtnl, m, link->manager); | |
f882c247 | 610 | |
3c9b8860 | 611 | if (link->link_messages == 0) { |
6a7a4e4d | 612 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 613 | link_enter_set_routes(link); |
dd3efc09 | 614 | } |
f882c247 TG |
615 | |
616 | return 1; | |
617 | } | |
618 | ||
619 | static int link_enter_set_addresses(Link *link) { | |
a6cc569e | 620 | Address *ad; |
f882c247 TG |
621 | int r; |
622 | ||
623 | assert(link); | |
624 | assert(link->network); | |
f5be5601 | 625 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 626 | |
e331e246 | 627 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 628 | |
3d3d4255 | 629 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
a6cc569e | 630 | r = address_configure(ad, link, &address_handler); |
dd3efc09 | 631 | if (r < 0) { |
5a8bcb67 | 632 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 TG |
633 | link_enter_failed(link); |
634 | return r; | |
635 | } | |
636 | ||
3c9b8860 | 637 | link->link_messages ++; |
f882c247 TG |
638 | } |
639 | ||
d4cdbea5 TG |
640 | /* now that we can figure out a default address for the dhcp server, |
641 | start it */ | |
642 | if (link_dhcp4_server_enabled(link)) { | |
643 | struct in_addr pool_start; | |
644 | Address *address; | |
645 | ||
646 | address = link_find_dhcp_server_address(link); | |
647 | if (!address) { | |
6a7a4e4d | 648 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
649 | link_enter_failed(link); |
650 | return 0; | |
651 | } | |
652 | ||
653 | r = sd_dhcp_server_set_address(link->dhcp_server, | |
654 | &address->in_addr.in, | |
655 | address->prefixlen); | |
656 | if (r < 0) | |
657 | return r; | |
658 | ||
659 | /* offer 32 addresses starting from the address following the server address */ | |
660 | pool_start.s_addr = htobe32(be32toh(address->in_addr.in.s_addr) + 1); | |
661 | r = sd_dhcp_server_set_lease_pool(link->dhcp_server, | |
662 | &pool_start, 32); | |
663 | if (r < 0) | |
664 | return r; | |
665 | ||
666 | /* TODO: | |
667 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
668 | &main_address->in_addr.in); | |
669 | if (r < 0) | |
670 | return r; | |
671 | ||
672 | r = sd_dhcp_server_set_prefixlen(link->dhcp_server, | |
673 | main_address->prefixlen); | |
674 | if (r < 0) | |
675 | return r; | |
676 | */ | |
677 | ||
678 | r = sd_dhcp_server_start(link->dhcp_server); | |
679 | if (r < 0) { | |
6a7a4e4d | 680 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
681 | |
682 | link_enter_failed(link); | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
6a7a4e4d | 687 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
688 | } |
689 | ||
6a7a4e4d | 690 | if (link->link_messages == 0) |
431ca2ce | 691 | link_enter_set_routes(link); |
6a7a4e4d LP |
692 | else |
693 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 694 | |
f882c247 TG |
695 | return 0; |
696 | } | |
697 | ||
1c4baffc | 698 | int link_address_drop_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 699 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
700 | int r; |
701 | ||
702 | assert(m); | |
703 | assert(link); | |
704 | assert(link->ifname); | |
705 | ||
5da8149f | 706 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
707 | return 1; |
708 | ||
1c4baffc | 709 | r = sd_netlink_message_get_errno(m); |
b90b025a | 710 | if (r < 0 && r != -EADDRNOTAVAIL) |
6a7a4e4d | 711 | log_link_warning_errno(link, r, "%-*s: could not drop address: %m", IFNAMSIZ, link->ifname); |
ff254138 | 712 | |
5bdd314c | 713 | return 1; |
ff254138 TG |
714 | } |
715 | ||
a245ced0 | 716 | static int link_set_bridge_fdb(Link *const link) { |
b98b483b AR |
717 | FdbEntry *fdb_entry; |
718 | int r = 0; | |
719 | ||
720 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
ea6ec096 | 721 | r = fdb_entry_configure(link, fdb_entry); |
b98b483b | 722 | if(r < 0) { |
6a7a4e4d | 723 | log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
b98b483b AR |
724 | break; |
725 | } | |
726 | } | |
727 | ||
728 | return r; | |
729 | } | |
730 | ||
1c4baffc | 731 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
732 | _cleanup_link_unref_ Link *link = userdata; |
733 | int r; | |
734 | ||
6a7a4e4d | 735 | log_link_debug(link, "Set link"); |
e1853b00 | 736 | |
1c4baffc | 737 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 738 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 739 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
740 | link_enter_failed(link); |
741 | return 1; | |
742 | } | |
743 | ||
744 | return 0; | |
745 | } | |
746 | ||
19070062 | 747 | static int set_hostname_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
5da8149f | 748 | _cleanup_link_unref_ Link *link = userdata; |
1346b1f0 TG |
749 | int r; |
750 | ||
19070062 | 751 | assert(m); |
b226d99b TG |
752 | assert(link); |
753 | ||
5da8149f | 754 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
370e9930 | 755 | return 1; |
370e9930 | 756 | |
1346b1f0 | 757 | r = sd_bus_message_get_errno(m); |
70b34f5d | 758 | if (r > 0) |
6a7a4e4d | 759 | log_link_warning_errno(link, r, "Could not set hostname: %m"); |
1346b1f0 TG |
760 | |
761 | return 1; | |
762 | } | |
763 | ||
3c9b8860 | 764 | int link_set_hostname(Link *link, const char *hostname) { |
1346b1f0 TG |
765 | int r = 0; |
766 | ||
b226d99b TG |
767 | assert(link); |
768 | assert(link->manager); | |
1346b1f0 TG |
769 | assert(hostname); |
770 | ||
79008bdd | 771 | log_link_debug(link, "Setting transient hostname: '%s'", hostname); |
1346b1f0 | 772 | |
3c9b8860 TG |
773 | if (!link->manager->bus) { |
774 | /* TODO: replace by assert when we can rely on kdbus */ | |
6a7a4e4d | 775 | log_link_info(link, "Not connected to system bus, ignoring transient hostname."); |
bcbca829 TG |
776 | return 0; |
777 | } | |
778 | ||
9c34154a | 779 | r = sd_bus_call_method_async( |
b226d99b | 780 | link->manager->bus, |
9c34154a | 781 | NULL, |
1346b1f0 TG |
782 | "org.freedesktop.hostname1", |
783 | "/org/freedesktop/hostname1", | |
784 | "org.freedesktop.hostname1", | |
9c34154a UTL |
785 | "SetHostname", |
786 | set_hostname_handler, | |
787 | link, | |
788 | "sb", | |
789 | hostname, | |
790 | false); | |
1346b1f0 | 791 | |
6a7a4e4d LP |
792 | if (r < 0) |
793 | return log_link_error_errno(link, r, "Could not set transient hostname: %m"); | |
b226d99b TG |
794 | |
795 | link_ref(link); | |
1346b1f0 | 796 | |
5da8149f | 797 | return 0; |
1346b1f0 TG |
798 | } |
799 | ||
1c4baffc | 800 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 801 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
802 | int r; |
803 | ||
804 | assert(m); | |
805 | assert(link); | |
806 | assert(link->ifname); | |
807 | ||
5da8149f | 808 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
809 | return 1; |
810 | ||
1c4baffc | 811 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 812 | if (r < 0) |
6a7a4e4d | 813 | log_link_warning_errno(link, r, "%-*s: could not set MTU: %m", IFNAMSIZ, link->ifname); |
4f882b2a TG |
814 | |
815 | return 1; | |
816 | } | |
817 | ||
3c9b8860 | 818 | int link_set_mtu(Link *link, uint32_t mtu) { |
1c4baffc | 819 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f882b2a TG |
820 | int r; |
821 | ||
822 | assert(link); | |
823 | assert(link->manager); | |
824 | assert(link->manager->rtnl); | |
825 | ||
6a7a4e4d | 826 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 827 | |
6a7a4e4d LP |
828 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
829 | if (r < 0) | |
830 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 831 | |
1c4baffc | 832 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
833 | if (r < 0) |
834 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 835 | |
1c4baffc | 836 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
837 | if (r < 0) |
838 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 839 | |
ae941762 | 840 | link_ref(link); |
b226d99b | 841 | |
4f882b2a TG |
842 | return 0; |
843 | } | |
844 | ||
e1853b00 | 845 | static int link_set_bridge(Link *link) { |
1c4baffc | 846 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
e1853b00 SS |
847 | int r; |
848 | ||
849 | assert(link); | |
850 | assert(link->network); | |
851 | ||
852 | if(link->network->cost == 0) | |
853 | return 0; | |
854 | ||
6a7a4e4d LP |
855 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
856 | if (r < 0) | |
857 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
858 | |
859 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
860 | if (r < 0) |
861 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 862 | |
1c4baffc | 863 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
864 | if (r < 0) |
865 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 SS |
866 | |
867 | if(link->network->cost != 0) { | |
1c4baffc | 868 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
869 | if (r < 0) |
870 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 SS |
871 | } |
872 | ||
1c4baffc | 873 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
874 | if (r < 0) |
875 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 876 | |
1c4baffc | 877 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
878 | if (r < 0) |
879 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
880 | |
881 | link_ref(link); | |
882 | ||
883 | return r; | |
884 | } | |
885 | ||
49699bac SS |
886 | static void lldp_handler(sd_lldp *lldp, int event, void *userdata) { |
887 | Link *link = userdata; | |
888 | int r; | |
889 | ||
890 | assert(link); | |
891 | assert(link->network); | |
892 | assert(link->manager); | |
893 | ||
894 | if (event != UPDATE_INFO) | |
895 | return; | |
896 | ||
897 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
898 | if (r < 0) | |
6a7a4e4d | 899 | log_link_warning_errno(link, r, "Could not save LLDP: %m"); |
49699bac SS |
900 | |
901 | } | |
902 | ||
ff254138 TG |
903 | static int link_acquire_conf(Link *link) { |
904 | int r; | |
905 | ||
906 | assert(link); | |
907 | assert(link->network); | |
ff254138 TG |
908 | assert(link->manager); |
909 | assert(link->manager->event); | |
910 | ||
78c958f8 | 911 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 912 | assert(link->ipv4ll); |
ff254138 | 913 | |
6a7a4e4d | 914 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
915 | |
916 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
917 | if (r < 0) |
918 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
919 | } |
920 | ||
78c958f8 | 921 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 922 | assert(link->dhcp_client); |
ff254138 | 923 | |
6a7a4e4d | 924 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 925 | |
5c1d3fc9 | 926 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
927 | if (r < 0) |
928 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 929 | } |
ff254138 | 930 | |
78c958f8 | 931 | if (link_dhcp6_enabled(link)) { |
4138fb2c PF |
932 | assert(link->icmp6_router_discovery); |
933 | ||
6a7a4e4d | 934 | log_link_debug(link, "Discovering IPv6 routers"); |
4138fb2c PF |
935 | |
936 | r = sd_icmp6_router_solicitation_start(link->icmp6_router_discovery); | |
6a7a4e4d LP |
937 | if (r < 0) |
938 | return log_link_warning_errno(link, r, "Could not start IPv6 router discovery: %m"); | |
4138fb2c PF |
939 | } |
940 | ||
ce43e484 SS |
941 | if (link_lldp_enabled(link)) { |
942 | assert(link->lldp); | |
943 | ||
944 | log_link_debug(link, "Starting LLDP"); | |
945 | ||
946 | r = sd_lldp_start(link->lldp); | |
6a7a4e4d LP |
947 | if (r < 0) |
948 | return log_link_warning_errno(link, r, "Could not start LLDP: %m"); | |
ce43e484 SS |
949 | } |
950 | ||
ff254138 TG |
951 | return 0; |
952 | } | |
953 | ||
a61bb41c | 954 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
955 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
956 | ||
a61bb41c | 957 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
958 | return true; |
959 | ||
a61bb41c | 960 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 961 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 962 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
963 | return true; |
964 | ||
965 | return false; | |
966 | } | |
967 | ||
1c4baffc | 968 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 969 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
970 | int r; |
971 | ||
1746cf2a TG |
972 | assert(link); |
973 | ||
5da8149f | 974 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
975 | return 1; |
976 | ||
1c4baffc | 977 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
978 | if (r < 0) |
979 | /* we warn but don't fail the link, as it may be | |
980 | brought up later */ | |
981 | log_link_warning_errno(link, r, "%-*s: could not bring up interface: %m", IFNAMSIZ, link->ifname); | |
45ad2c13 | 982 | |
f882c247 TG |
983 | return 1; |
984 | } | |
985 | ||
986 | static int link_up(Link *link) { | |
1c4baffc | 987 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
5c3072ea | 988 | uint8_t ipv6ll_mode; |
f579559b TG |
989 | int r; |
990 | ||
f882c247 | 991 | assert(link); |
c106cc36 | 992 | assert(link->network); |
f882c247 TG |
993 | assert(link->manager); |
994 | assert(link->manager->rtnl); | |
995 | ||
6a7a4e4d | 996 | log_link_debug(link, "Bringing link up"); |
449f7554 | 997 | |
6a7a4e4d LP |
998 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
999 | if (r < 0) | |
1000 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1001 | |
5d4795f3 | 1002 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1003 | if (r < 0) |
1004 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1005 | |
c106cc36 | 1006 | if (link->network->mac) { |
1c4baffc | 1007 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1008 | if (r < 0) |
1009 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1010 | } |
1011 | ||
1012 | if (link->network->mtu) { | |
1c4baffc | 1013 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1014 | if (r < 0) |
1015 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1016 | } |
1017 | ||
1c4baffc | 1018 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1019 | if (r < 0) |
1020 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1021 | |
01d28f81 TG |
1022 | if (socket_ipv6_is_supported()) { |
1023 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ | |
1c4baffc | 1024 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1025 | if (r < 0) |
1026 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1027 | |
01d28f81 | 1028 | ipv6ll_mode = link_ipv6ll_enabled(link) ? IN6_ADDR_GEN_MODE_EUI64 : IN6_ADDR_GEN_MODE_NONE; |
1c4baffc | 1029 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1030 | if (r < 0) |
1031 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1032 | |
01d28f81 | 1033 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1034 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1035 | if (r < 0) |
1036 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1037 | } | |
1038 | ||
1c4baffc | 1039 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1040 | if (r < 0) |
01d28f81 | 1041 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1042 | } |
d0d6a4cd | 1043 | |
1c4baffc | 1044 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1045 | if (r < 0) |
1046 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1047 | |
1c4baffc | 1048 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1049 | if (r < 0) |
1050 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1051 | |
b226d99b TG |
1052 | link_ref(link); |
1053 | ||
f882c247 TG |
1054 | return 0; |
1055 | } | |
1056 | ||
1c4baffc | 1057 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1058 | _cleanup_link_unref_ Link *link = userdata; |
1059 | int r; | |
1060 | ||
1061 | assert(link); | |
1062 | ||
1063 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1064 | return 1; | |
1065 | ||
1c4baffc | 1066 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1067 | if (r < 0) |
6a7a4e4d | 1068 | log_link_warning_errno(link, r, "%-*s: could not bring down interface: %m", IFNAMSIZ, link->ifname); |
0d4ad91d AR |
1069 | |
1070 | return 1; | |
1071 | } | |
1072 | ||
1073 | static int link_down(Link *link) { | |
1c4baffc | 1074 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
0d4ad91d AR |
1075 | int r; |
1076 | ||
1077 | assert(link); | |
1078 | assert(link->manager); | |
1079 | assert(link->manager->rtnl); | |
1080 | ||
6a7a4e4d | 1081 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1082 | |
1083 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1084 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1085 | if (r < 0) |
1086 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1087 | |
1088 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1089 | if (r < 0) |
1090 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1091 | |
1c4baffc | 1092 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1093 | if (r < 0) |
1094 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1095 | |
1096 | link_ref(link); | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | ||
1101 | static int link_handle_bound_to_list(Link *link) { | |
1102 | Link *l; | |
1103 | Iterator i; | |
1104 | int r; | |
1105 | bool required_up = false; | |
1106 | bool link_is_up = false; | |
1107 | ||
1108 | assert(link); | |
1109 | ||
1110 | if (hashmap_isempty(link->bound_to_links)) | |
1111 | return 0; | |
1112 | ||
1113 | if (link->flags & IFF_UP) | |
1114 | link_is_up = true; | |
1115 | ||
1116 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1117 | if (link_has_carrier(l)) { | |
1118 | required_up = true; | |
1119 | break; | |
1120 | } | |
1121 | ||
1122 | if (!required_up && link_is_up) { | |
1123 | r = link_down(link); | |
1124 | if (r < 0) | |
1125 | return r; | |
1126 | } else if (required_up && !link_is_up) { | |
1127 | r = link_up(link); | |
1128 | if (r < 0) | |
1129 | return r; | |
1130 | } | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | ||
1135 | static int link_handle_bound_by_list(Link *link) { | |
1136 | Iterator i; | |
1137 | Link *l; | |
1138 | int r; | |
1139 | ||
1140 | assert(link); | |
1141 | ||
1142 | if (hashmap_isempty(link->bound_by_links)) | |
1143 | return 0; | |
1144 | ||
1145 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1146 | r = link_handle_bound_to_list(l); | |
1147 | if (r < 0) | |
1148 | return r; | |
1149 | } | |
1150 | ||
1151 | return 0; | |
1152 | } | |
1153 | ||
1154 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1155 | int r; | |
1156 | ||
1157 | assert(link); | |
1158 | assert(carrier); | |
1159 | ||
1160 | if (link == carrier) | |
1161 | return 0; | |
1162 | ||
1163 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1164 | return 0; | |
1165 | ||
1166 | r = hashmap_ensure_allocated(h, NULL); | |
1167 | if (r < 0) | |
1168 | return r; | |
1169 | ||
1170 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1171 | if (r < 0) | |
1172 | return r; | |
1173 | ||
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | static int link_new_bound_by_list(Link *link) { | |
1178 | Manager *m; | |
1179 | Link *carrier; | |
1180 | Iterator i; | |
1181 | int r; | |
1182 | bool list_updated = false; | |
1183 | ||
1184 | assert(link); | |
1185 | assert(link->manager); | |
1186 | ||
1187 | m = link->manager; | |
1188 | ||
1189 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1190 | if (!carrier->network) | |
1191 | continue; | |
1192 | ||
1193 | if (strv_isempty(carrier->network->bind_carrier)) | |
1194 | continue; | |
1195 | ||
1196 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1197 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1198 | if (r < 0) | |
1199 | return r; | |
1200 | ||
1201 | list_updated = true; | |
1202 | } | |
1203 | } | |
1204 | ||
1205 | if (list_updated) | |
1206 | link_save(link); | |
1207 | ||
1208 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) { | |
1209 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); | |
1210 | if (r < 0) | |
1211 | return r; | |
1212 | ||
1213 | link_save(carrier); | |
1214 | } | |
1215 | ||
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | static int link_new_bound_to_list(Link *link) { | |
1220 | Manager *m; | |
1221 | Link *carrier; | |
1222 | Iterator i; | |
1223 | int r; | |
1224 | bool list_updated = false; | |
1225 | ||
1226 | assert(link); | |
1227 | assert(link->manager); | |
1228 | ||
1229 | if (!link->network) | |
1230 | return 0; | |
1231 | ||
1232 | if (strv_isempty(link->network->bind_carrier)) | |
1233 | return 0; | |
1234 | ||
1235 | m = link->manager; | |
1236 | ||
1237 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1238 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1239 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1240 | if (r < 0) | |
1241 | return r; | |
1242 | ||
1243 | list_updated = true; | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | if (list_updated) | |
1248 | link_save(link); | |
1249 | ||
1250 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1251 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1252 | if (r < 0) | |
1253 | return r; | |
1254 | ||
1255 | link_save(carrier); | |
1256 | } | |
1257 | ||
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | static int link_new_carrier_maps(Link *link) { | |
1262 | int r; | |
1263 | ||
1264 | r = link_new_bound_by_list(link); | |
1265 | if (r < 0) | |
1266 | return r; | |
1267 | ||
1268 | r = link_handle_bound_by_list(link); | |
1269 | if (r < 0) | |
1270 | return r; | |
1271 | ||
1272 | r = link_new_bound_to_list(link); | |
1273 | if (r < 0) | |
1274 | return r; | |
1275 | ||
1276 | r = link_handle_bound_to_list(link); | |
1277 | if (r < 0) | |
1278 | return r; | |
1279 | ||
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | static void link_free_bound_to_list(Link *link) { | |
1284 | Link *bound_to; | |
1285 | Iterator i; | |
1286 | ||
1287 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
1288 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
1289 | ||
1290 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
1291 | link_save(bound_to); | |
1292 | } | |
1293 | ||
1294 | return; | |
1295 | } | |
1296 | ||
1297 | static void link_free_bound_by_list(Link *link) { | |
1298 | Link *bound_by; | |
1299 | Iterator i; | |
1300 | ||
1301 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
1302 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
1303 | ||
1304 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
1305 | link_save(bound_by); | |
1306 | link_handle_bound_to_list(bound_by); | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | return; | |
1311 | } | |
1312 | ||
1313 | static void link_free_carrier_maps(Link *link) { | |
1314 | bool list_updated = false; | |
1315 | ||
1316 | assert(link); | |
1317 | ||
1318 | if (!hashmap_isempty(link->bound_to_links)) { | |
1319 | link_free_bound_to_list(link); | |
1320 | list_updated = true; | |
1321 | } | |
1322 | ||
1323 | if (!hashmap_isempty(link->bound_by_links)) { | |
1324 | link_free_bound_by_list(link); | |
1325 | list_updated = true; | |
1326 | } | |
1327 | ||
1328 | if (list_updated) | |
1329 | link_save(link); | |
1330 | ||
1331 | return; | |
1332 | } | |
1333 | ||
1334 | void link_drop(Link *link) { | |
1335 | if (!link || link->state == LINK_STATE_LINGER) | |
1336 | return; | |
1337 | ||
1338 | link_set_state(link, LINK_STATE_LINGER); | |
1339 | ||
1340 | link_free_carrier_maps(link); | |
1341 | ||
6a7a4e4d | 1342 | log_link_debug(link, "Link removed"); |
0d4ad91d AR |
1343 | |
1344 | link_unref(link); | |
1345 | ||
1346 | return; | |
1347 | } | |
1348 | ||
3f265037 | 1349 | static int link_joined(Link *link) { |
f882c247 TG |
1350 | int r; |
1351 | ||
ef1ba606 | 1352 | assert(link); |
f5be5601 | 1353 | assert(link->network); |
dd3efc09 | 1354 | |
0d4ad91d AR |
1355 | if (!hashmap_isempty(link->bound_to_links)) { |
1356 | r = link_handle_bound_to_list(link); | |
1357 | if (r < 0) | |
1358 | return r; | |
1359 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1360 | r = link_up(link); |
1361 | if (r < 0) { | |
1362 | link_enter_failed(link); | |
1363 | return r; | |
1364 | } | |
ef1ba606 | 1365 | } |
f882c247 | 1366 | |
e1853b00 SS |
1367 | if(link->network->bridge) { |
1368 | r = link_set_bridge(link); | |
6a7a4e4d LP |
1369 | if (r < 0) |
1370 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
1371 | } |
1372 | ||
fb6730c4 | 1373 | return link_enter_set_addresses(link); |
02b59d57 TG |
1374 | } |
1375 | ||
62e2d5bb | 1376 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1377 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
1378 | int r; |
1379 | ||
1746cf2a | 1380 | assert(link); |
ef1ba606 | 1381 | assert(link->network); |
02b59d57 | 1382 | |
52433f6b TG |
1383 | link->enslaving --; |
1384 | ||
5da8149f | 1385 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1386 | return 1; |
1387 | ||
1c4baffc | 1388 | r = sd_netlink_message_get_errno(m); |
856f962c | 1389 | if (r < 0 && r != -EEXIST) { |
6a7a4e4d | 1390 | log_link_error_errno(link, r, "%-*s: could not join netdev: %m", IFNAMSIZ, link->ifname); |
ef1ba606 TG |
1391 | link_enter_failed(link); |
1392 | return 1; | |
ba179154 | 1393 | } else |
6a7a4e4d | 1394 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 1395 | |
856f962c | 1396 | if (link->enslaving <= 0) |
3f265037 | 1397 | link_joined(link); |
02b59d57 TG |
1398 | |
1399 | return 1; | |
1400 | } | |
1401 | ||
3f265037 | 1402 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1403 | NetDev *netdev; |
672682a6 | 1404 | Iterator i; |
02b59d57 TG |
1405 | int r; |
1406 | ||
1407 | assert(link); | |
1408 | assert(link->network); | |
8434fd5c | 1409 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 1410 | |
e331e246 | 1411 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 1412 | |
fe8db0c5 TG |
1413 | link_save(link); |
1414 | ||
7951dea2 SS |
1415 | if (!link->network->bridge && |
1416 | !link->network->bond && | |
6a0a2f86 | 1417 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 1418 | return link_joined(link); |
02b59d57 | 1419 | |
d9c67ea1 | 1420 | if (link->network->bond) { |
f2341e0a LP |
1421 | log_struct(LOG_DEBUG, |
1422 | LOG_LINK_INTERFACE(link), | |
1423 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1424 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
1425 | NULL); | |
1426 | ||
1427 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 1428 | if (r < 0) { |
f2341e0a LP |
1429 | log_struct_errno(LOG_WARNING, r, |
1430 | LOG_LINK_INTERFACE(link), | |
1431 | LOG_NETDEV_INTERFACE(link->network->bond), | |
1432 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
1433 | NULL); | |
1434 | ||
52433f6b TG |
1435 | link_enter_failed(link); |
1436 | return r; | |
1437 | } | |
1438 | ||
0ad6148e MO |
1439 | link->enslaving ++; |
1440 | } | |
1441 | ||
d9c67ea1 | 1442 | if (link->network->bridge) { |
f2341e0a LP |
1443 | log_struct(LOG_DEBUG, |
1444 | LOG_LINK_INTERFACE(link), | |
1445 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1446 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
1447 | NULL); | |
1448 | ||
1449 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 1450 | if (r < 0) { |
f2341e0a LP |
1451 | log_struct_errno(LOG_WARNING, r, |
1452 | LOG_LINK_INTERFACE(link), | |
1453 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
1454 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
1455 | NULL), | |
0ad6148e MO |
1456 | link_enter_failed(link); |
1457 | return r; | |
1458 | } | |
1459 | ||
52433f6b TG |
1460 | link->enslaving ++; |
1461 | } | |
1462 | ||
6a0a2f86 | 1463 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 1464 | |
f2341e0a LP |
1465 | log_struct(LOG_DEBUG, |
1466 | LOG_LINK_INTERFACE(link), | |
1467 | LOG_NETDEV_INTERFACE(netdev), | |
1468 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
1469 | NULL); | |
1470 | ||
1471 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 1472 | if (r < 0) { |
f2341e0a LP |
1473 | log_struct_errno(LOG_WARNING, r, |
1474 | LOG_LINK_INTERFACE(link), | |
1475 | LOG_NETDEV_INTERFACE(netdev), | |
1476 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
1477 | NULL); | |
326cb406 SS |
1478 | link_enter_failed(link); |
1479 | return r; | |
1480 | } | |
1481 | ||
326cb406 SS |
1482 | link->enslaving ++; |
1483 | } | |
1484 | ||
ef1ba606 TG |
1485 | return 0; |
1486 | } | |
1487 | ||
769d324c | 1488 | static int link_set_ipv4_forward(Link *link) { |
5a8bcb67 LP |
1489 | const char *p = NULL; |
1490 | int r; | |
1491 | ||
8add5f79 NO |
1492 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1493 | return 0; | |
1494 | ||
63c372cb | 1495 | p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding"); |
505c5f6d | 1496 | r = write_string_file_no_create(p, one_zero(link_ipv4_forward_enabled(link))); |
5a8bcb67 | 1497 | if (r < 0) |
43c6d5ab LP |
1498 | log_link_warning_errno(link, r, "Cannot configure IPv4 forwarding for interface %s: %m", link->ifname); |
1499 | ||
769d324c LP |
1500 | return 0; |
1501 | } | |
1502 | ||
1503 | static int link_set_ipv6_forward(Link *link) { | |
1504 | const char *p = NULL; | |
1505 | int r; | |
1506 | ||
fe027299 LP |
1507 | /* Make this a NOP if IPv6 is not available */ |
1508 | if (!socket_ipv6_is_supported()) | |
1509 | return 0; | |
1510 | ||
8add5f79 NO |
1511 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
1512 | return 0; | |
1513 | ||
63c372cb | 1514 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/forwarding"); |
769d324c LP |
1515 | r = write_string_file_no_create(p, one_zero(link_ipv6_forward_enabled(link))); |
1516 | if (r < 0) | |
1517 | log_link_warning_errno(link, r, "Cannot configure IPv6 forwarding for interface: %m"); | |
5a8bcb67 LP |
1518 | |
1519 | return 0; | |
1520 | } | |
1521 | ||
49092e22 SS |
1522 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1523 | char buf[2 * DECIMAL_STR_MAX(unsigned) + 1]; | |
1524 | const char *p = NULL; | |
1525 | int r; | |
1526 | ||
1527 | /* Make this a NOP if IPv6 is not available */ | |
1528 | if (!socket_ipv6_is_supported()) | |
1529 | return 0; | |
1530 | ||
1531 | if (!link_ipv6_privacy_extensions_enabled(link)) | |
1532 | return 0; | |
1533 | ||
1534 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
1535 | xsprintf(buf, "%u", link->network->ipv6_privacy_extensions); | |
1536 | ||
1537 | r = write_string_file_no_create(p, buf); | |
1538 | if (r < 0) | |
1539 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); | |
1540 | ||
1541 | return 0; | |
1542 | } | |
1543 | ||
a748b692 | 1544 | static int link_configure(Link *link) { |
02b59d57 TG |
1545 | int r; |
1546 | ||
ef1ba606 | 1547 | assert(link); |
b22d8a00 | 1548 | assert(link->network); |
8434fd5c | 1549 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 1550 | |
b98b483b AR |
1551 | r = link_set_bridge_fdb(link); |
1552 | if (r < 0) | |
1553 | return r; | |
1554 | ||
769d324c LP |
1555 | r = link_set_ipv4_forward(link); |
1556 | if (r < 0) | |
1557 | return r; | |
1558 | ||
1559 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
1560 | if (r < 0) |
1561 | return r; | |
1562 | ||
49092e22 SS |
1563 | r = link_set_ipv6_privacy_extensions(link); |
1564 | if (r < 0) | |
1565 | return r; | |
1566 | ||
78c958f8 | 1567 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 1568 | r = ipv4ll_configure(link); |
eb34d4af TG |
1569 | if (r < 0) |
1570 | return r; | |
1571 | } | |
1572 | ||
78c958f8 | 1573 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 1574 | r = dhcp4_configure(link); |
eb34d4af TG |
1575 | if (r < 0) |
1576 | return r; | |
eb34d4af TG |
1577 | } |
1578 | ||
78c958f8 | 1579 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
1580 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
1581 | if (r < 0) | |
1582 | return r; | |
1583 | ||
1584 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
1585 | if (r < 0) | |
1586 | return r; | |
dd43110f TG |
1587 | } |
1588 | ||
78c958f8 | 1589 | if (link_dhcp6_enabled(link)) { |
5c79bd79 | 1590 | r = icmp6_configure(link); |
4138fb2c PF |
1591 | if (r < 0) |
1592 | return r; | |
1593 | } | |
1594 | ||
ce43e484 SS |
1595 | if (link_lldp_enabled(link)) { |
1596 | r = sd_lldp_new(link->ifindex, link->ifname, &link->mac, &link->lldp); | |
1597 | if (r < 0) | |
1598 | return r; | |
1599 | ||
1600 | r = sd_lldp_attach_event(link->lldp, NULL, 0); | |
1601 | if (r < 0) | |
1602 | return r; | |
49699bac SS |
1603 | |
1604 | r = sd_lldp_set_callback(link->lldp, | |
1605 | lldp_handler, link); | |
1606 | if (r < 0) | |
1607 | return r; | |
ce43e484 SS |
1608 | } |
1609 | ||
a61bb41c | 1610 | if (link_has_carrier(link)) { |
1e9be60b TG |
1611 | r = link_acquire_conf(link); |
1612 | if (r < 0) | |
1613 | return r; | |
cc544d5f | 1614 | } |
1e9be60b | 1615 | |
3f265037 | 1616 | return link_enter_join_netdev(link); |
505f8da7 TG |
1617 | } |
1618 | ||
1c4baffc | 1619 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 1620 | void *userdata) { |
5da8149f | 1621 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 1622 | Network *network; |
505f8da7 TG |
1623 | int r; |
1624 | ||
1625 | assert(link); | |
1626 | assert(link->ifname); | |
1627 | assert(link->manager); | |
1628 | ||
8434fd5c | 1629 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 1630 | return 1; |
505f8da7 | 1631 | |
6a7a4e4d | 1632 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 1633 | |
0d4ad91d AR |
1634 | r = link_new_bound_by_list(link); |
1635 | if (r < 0) | |
1636 | return r; | |
1637 | ||
1638 | r = link_handle_bound_by_list(link); | |
1639 | if (r < 0) | |
1640 | return r; | |
1641 | ||
3c9b8860 TG |
1642 | r = network_get(link->manager, link->udev_device, link->ifname, |
1643 | &link->mac, &network); | |
57bd6899 TG |
1644 | if (r == -ENOENT) { |
1645 | link_enter_unmanaged(link); | |
5da8149f | 1646 | return 1; |
57bd6899 TG |
1647 | } else if (r < 0) |
1648 | return r; | |
505f8da7 | 1649 | |
bd2efe92 | 1650 | if (link->flags & IFF_LOOPBACK) { |
d0d6a4cd | 1651 | if (network->link_local != ADDRESS_FAMILY_NO) |
6a7a4e4d | 1652 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); |
78c958f8 | 1653 | |
cb9fc36a | 1654 | if (network->dhcp != ADDRESS_FAMILY_NO) |
6a7a4e4d | 1655 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); |
78c958f8 TG |
1656 | |
1657 | if (network->dhcp_server) | |
6a7a4e4d | 1658 | log_link_debug(link, "Ignoring DHCP server for loopback link"); |
bd2efe92 TG |
1659 | } |
1660 | ||
505f8da7 TG |
1661 | r = network_apply(link->manager, network, link); |
1662 | if (r < 0) | |
1663 | return r; | |
1664 | ||
0d4ad91d AR |
1665 | r = link_new_bound_to_list(link); |
1666 | if (r < 0) | |
1667 | return r; | |
1668 | ||
a748b692 TG |
1669 | r = link_configure(link); |
1670 | if (r < 0) | |
1671 | return r; | |
1672 | ||
5da8149f | 1673 | return 1; |
505f8da7 TG |
1674 | } |
1675 | ||
4f561e8e | 1676 | int link_initialized(Link *link, struct udev_device *device) { |
1c4baffc | 1677 | _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL; |
4f561e8e TG |
1678 | int r; |
1679 | ||
1680 | assert(link); | |
1681 | assert(link->manager); | |
1682 | assert(link->manager->rtnl); | |
1683 | assert(device); | |
1684 | ||
8434fd5c | 1685 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
1686 | return 0; |
1687 | ||
679b3605 TG |
1688 | if (link->udev_device) |
1689 | return 0; | |
1690 | ||
79008bdd | 1691 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
1692 | |
1693 | link->udev_device = udev_device_ref(device); | |
1694 | ||
3c9b8860 TG |
1695 | /* udev has initialized the link, but we don't know if we have yet |
1696 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
1697 | * when it returns we know that the pending NEWLINKs have already been | |
1698 | * processed and that we are up-to-date */ | |
4f561e8e | 1699 | |
3c9b8860 TG |
1700 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
1701 | link->ifindex); | |
4f561e8e TG |
1702 | if (r < 0) |
1703 | return r; | |
1704 | ||
1c4baffc | 1705 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 1706 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
1707 | if (r < 0) |
1708 | return r; | |
1709 | ||
5da8149f TG |
1710 | link_ref(link); |
1711 | ||
4f561e8e TG |
1712 | return 0; |
1713 | } | |
1714 | ||
5a8bcb67 LP |
1715 | static Address* link_get_equal_address(Link *link, Address *needle) { |
1716 | Address *i; | |
1717 | ||
1718 | assert(link); | |
1719 | assert(needle); | |
1720 | ||
1721 | LIST_FOREACH(addresses, i, link->addresses) | |
1722 | if (address_equal(i, needle)) | |
1723 | return i; | |
1724 | ||
1725 | return NULL; | |
1726 | } | |
1727 | ||
1c4baffc | 1728 | int link_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { |
fbbeb65a TG |
1729 | Manager *m = userdata; |
1730 | Link *link = NULL; | |
1731 | uint16_t type; | |
1732 | _cleanup_address_free_ Address *address = NULL; | |
851c9f82 | 1733 | unsigned char flags; |
5a8bcb67 LP |
1734 | Address *existing; |
1735 | char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX]; | |
c6d3b303 | 1736 | const char *valid_str = NULL; |
fbbeb65a TG |
1737 | int r, ifindex; |
1738 | ||
1739 | assert(rtnl); | |
1740 | assert(message); | |
1741 | assert(m); | |
1742 | ||
1c4baffc TG |
1743 | if (sd_netlink_message_is_error(message)) { |
1744 | r = sd_netlink_message_get_errno(message); | |
45af44d4 TG |
1745 | if (r < 0) |
1746 | log_warning_errno(r, "rtnl: failed to receive address: %m"); | |
1747 | ||
1748 | return 0; | |
1749 | } | |
1750 | ||
1c4baffc | 1751 | r = sd_netlink_message_get_type(message, &type); |
fbbeb65a | 1752 | if (r < 0) { |
6a7a4e4d | 1753 | log_warning_errno(r, "rtnl: could not get message type: %m"); |
fbbeb65a | 1754 | return 0; |
cdfee943 TG |
1755 | } else if (type != RTM_NEWADDR && type != RTM_DELADDR) { |
1756 | log_warning("rtnl: received unexpected message type when processing address"); | |
1757 | return 0; | |
fbbeb65a TG |
1758 | } |
1759 | ||
1760 | r = sd_rtnl_message_addr_get_ifindex(message, &ifindex); | |
45af44d4 | 1761 | if (r < 0) { |
cdfee943 | 1762 | log_warning_errno(r, "rtnl: could not get ifindex from address: %m"); |
45af44d4 TG |
1763 | return 0; |
1764 | } else if (ifindex <= 0) { | |
1765 | log_warning("rtnl: received address message with invalid ifindex: %d", ifindex); | |
fbbeb65a TG |
1766 | return 0; |
1767 | } else { | |
1768 | r = link_get(m, ifindex, &link); | |
1769 | if (r < 0 || !link) { | |
6a24f148 TG |
1770 | /* when enumerating we might be out of sync, but we will |
1771 | * get the address again, so just ignore it */ | |
1772 | if (!m->enumerating) | |
1773 | log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex); | |
fbbeb65a TG |
1774 | return 0; |
1775 | } | |
1776 | } | |
1777 | ||
1778 | r = address_new_dynamic(&address); | |
1779 | if (r < 0) | |
393c0c5e | 1780 | return r; |
fbbeb65a TG |
1781 | |
1782 | r = sd_rtnl_message_addr_get_family(message, &address->family); | |
1783 | if (r < 0 || !IN_SET(address->family, AF_INET, AF_INET6)) { | |
6a7a4e4d | 1784 | log_link_warning(link, "rtnl: received address with invalid family, ignoring."); |
fbbeb65a TG |
1785 | return 0; |
1786 | } | |
1787 | ||
1788 | r = sd_rtnl_message_addr_get_prefixlen(message, &address->prefixlen); | |
1789 | if (r < 0) { | |
6a7a4e4d | 1790 | log_link_warning_errno(link, r, "rtnl: received address with invalid prefixlen, ignoring: %m"); |
e375dcde TG |
1791 | return 0; |
1792 | } | |
1793 | ||
1794 | r = sd_rtnl_message_addr_get_scope(message, &address->scope); | |
1795 | if (r < 0) { | |
6a7a4e4d | 1796 | log_link_warning_errno(link, r, "rtnl: received address with invalid scope, ignoring: %m"); |
fbbeb65a TG |
1797 | return 0; |
1798 | } | |
1799 | ||
851c9f82 | 1800 | r = sd_rtnl_message_addr_get_flags(message, &flags); |
81163121 | 1801 | if (r < 0) { |
6a7a4e4d | 1802 | log_link_warning_errno(link, r, "rtnl: received address with invalid flags, ignoring: %m"); |
81163121 TG |
1803 | return 0; |
1804 | } | |
851c9f82 | 1805 | address->flags = flags; |
81163121 | 1806 | |
fbbeb65a TG |
1807 | switch (address->family) { |
1808 | case AF_INET: | |
1c4baffc | 1809 | r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &address->in_addr.in); |
fbbeb65a | 1810 | if (r < 0) { |
6a7a4e4d | 1811 | log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m"); |
fbbeb65a TG |
1812 | return 0; |
1813 | } | |
1814 | ||
1815 | break; | |
1816 | ||
1817 | case AF_INET6: | |
1c4baffc | 1818 | r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &address->in_addr.in6); |
fbbeb65a | 1819 | if (r < 0) { |
6a7a4e4d | 1820 | log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m"); |
fbbeb65a TG |
1821 | return 0; |
1822 | } | |
1823 | ||
1824 | break; | |
1825 | ||
1826 | default: | |
1827 | assert_not_reached("invalid address family"); | |
1828 | } | |
1829 | ||
5a8bcb67 | 1830 | if (!inet_ntop(address->family, &address->in_addr, buf, INET6_ADDRSTRLEN)) { |
6a7a4e4d | 1831 | log_link_warning(link, "Could not print address"); |
fbbeb65a TG |
1832 | return 0; |
1833 | } | |
1834 | ||
1c4baffc | 1835 | r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &address->cinfo); |
c6d3b303 TG |
1836 | if (r >= 0) { |
1837 | if (address->cinfo.ifa_valid == CACHE_INFO_INFINITY_LIFE_TIME) | |
1838 | valid_str = "ever"; | |
1839 | else | |
1840 | valid_str = format_timespan(valid_buf, FORMAT_TIMESPAN_MAX, | |
1841 | address->cinfo.ifa_valid * USEC_PER_SEC, | |
1842 | USEC_PER_SEC); | |
1843 | } | |
1844 | ||
5a8bcb67 LP |
1845 | existing = link_get_equal_address(link, address); |
1846 | ||
1847 | switch (type) { | |
1848 | case RTM_NEWADDR: | |
1849 | if (existing) { | |
1850 | log_link_debug(link, "Updating address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); | |
428fd0a7 | 1851 | |
428fd0a7 | 1852 | |
5a8bcb67 LP |
1853 | existing->scope = address->scope; |
1854 | existing->flags = address->flags; | |
1855 | existing->cinfo = address->cinfo; | |
428fd0a7 | 1856 | |
5a8bcb67 LP |
1857 | } else { |
1858 | log_link_debug(link, "Adding address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); | |
428fd0a7 | 1859 | |
5a8bcb67 LP |
1860 | LIST_PREPEND(addresses, link->addresses, address); |
1861 | address_establish(address, link); | |
fbbeb65a | 1862 | |
5a8bcb67 | 1863 | address = NULL; |
428fd0a7 | 1864 | |
5a8bcb67 LP |
1865 | link_save(link); |
1866 | } | |
f5602be9 | 1867 | |
428fd0a7 | 1868 | break; |
5a8bcb67 | 1869 | |
fbbeb65a | 1870 | case RTM_DELADDR: |
428fd0a7 | 1871 | |
5a8bcb67 LP |
1872 | if (existing) { |
1873 | log_link_debug(link, "Removing address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); | |
1874 | address_release(existing, link); | |
1875 | LIST_REMOVE(addresses, link->addresses, existing); | |
1876 | address_free(existing); | |
393c0c5e | 1877 | } else |
5a8bcb67 | 1878 | log_link_warning(link, "Removing non-existent address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); |
f5602be9 | 1879 | |
fbbeb65a TG |
1880 | break; |
1881 | default: | |
1882 | assert_not_reached("Received invalid RTNL message type"); | |
1883 | } | |
1884 | ||
1885 | return 1; | |
1886 | } | |
1887 | ||
1c4baffc | 1888 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
1889 | Link *link; |
1890 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
1891 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
1892 | int r; | |
1893 | ||
1894 | assert(m); | |
fbbeb65a | 1895 | assert(m->rtnl); |
505f8da7 TG |
1896 | assert(message); |
1897 | assert(ret); | |
1898 | ||
1899 | r = link_new(m, message, ret); | |
1900 | if (r < 0) | |
1901 | return r; | |
1902 | ||
1903 | link = *ret; | |
1904 | ||
6a7a4e4d | 1905 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 TG |
1906 | |
1907 | if (detect_container(NULL) <= 0) { | |
1908 | /* not in a container, udev will be around */ | |
ae06ab10 | 1909 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 1910 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
6a7a4e4d LP |
1911 | if (!device) |
1912 | return log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
505f8da7 | 1913 | |
3c4cb064 | 1914 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 1915 | /* not yet ready */ |
79008bdd | 1916 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 1917 | return 0; |
3c4cb064 | 1918 | } |
505f8da7 | 1919 | |
4f561e8e TG |
1920 | r = link_initialized(link, device); |
1921 | if (r < 0) | |
1922 | return r; | |
1923 | } else { | |
5da8149f TG |
1924 | /* we are calling a callback directly, so must take a ref */ |
1925 | link_ref(link); | |
1926 | ||
4f561e8e TG |
1927 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
1928 | if (r < 0) | |
1929 | return r; | |
1930 | } | |
505f8da7 | 1931 | |
a748b692 TG |
1932 | return 0; |
1933 | } | |
1934 | ||
9c0a72f9 TG |
1935 | static int link_carrier_gained(Link *link) { |
1936 | int r; | |
1937 | ||
1938 | assert(link); | |
1939 | ||
1940 | if (link->network) { | |
1941 | r = link_acquire_conf(link); | |
1942 | if (r < 0) { | |
1943 | link_enter_failed(link); | |
1944 | return r; | |
1945 | } | |
1946 | } | |
1947 | ||
0d4ad91d AR |
1948 | r = link_handle_bound_by_list(link); |
1949 | if (r < 0) | |
1950 | return r; | |
1951 | ||
9c0a72f9 TG |
1952 | return 0; |
1953 | } | |
1954 | ||
1955 | static int link_carrier_lost(Link *link) { | |
1956 | int r; | |
1957 | ||
1958 | assert(link); | |
1959 | ||
1960 | r = link_stop_clients(link); | |
1961 | if (r < 0) { | |
1962 | link_enter_failed(link); | |
1963 | return r; | |
1964 | } | |
1965 | ||
0d4ad91d AR |
1966 | r = link_handle_bound_by_list(link); |
1967 | if (r < 0) | |
1968 | return r; | |
1969 | ||
9c0a72f9 TG |
1970 | return 0; |
1971 | } | |
1972 | ||
1973 | int link_carrier_reset(Link *link) { | |
1974 | int r; | |
1975 | ||
1976 | assert(link); | |
1977 | ||
1978 | if (link_has_carrier(link)) { | |
1979 | r = link_carrier_lost(link); | |
1980 | if (r < 0) | |
1981 | return r; | |
1982 | ||
1983 | r = link_carrier_gained(link); | |
1984 | if (r < 0) | |
1985 | return r; | |
1986 | ||
6a7a4e4d | 1987 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
1988 | } |
1989 | ||
1990 | return 0; | |
1991 | } | |
1992 | ||
1993 | ||
1c4baffc | 1994 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 1995 | struct ether_addr mac; |
ca4e095a | 1996 | const char *ifname; |
afe7fd56 | 1997 | uint32_t mtu; |
a61bb41c | 1998 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
1999 | int r; |
2000 | ||
dd3efc09 | 2001 | assert(link); |
b8941f74 | 2002 | assert(link->ifname); |
22936833 TG |
2003 | assert(m); |
2004 | ||
7619683b TG |
2005 | if (link->state == LINK_STATE_LINGER) { |
2006 | link_ref(link); | |
6a7a4e4d | 2007 | log_link_info(link, "Link readded"); |
e331e246 | 2008 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
2009 | |
2010 | r = link_new_carrier_maps(link); | |
2011 | if (r < 0) | |
2012 | return r; | |
7619683b TG |
2013 | } |
2014 | ||
1c4baffc | 2015 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2016 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 2017 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 2018 | |
0d4ad91d AR |
2019 | link_free_carrier_maps(link); |
2020 | ||
b8941f74 TG |
2021 | free(link->ifname); |
2022 | link->ifname = strdup(ifname); | |
2023 | if (!link->ifname) | |
2024 | return -ENOMEM; | |
0d4ad91d AR |
2025 | |
2026 | r = link_new_carrier_maps(link); | |
2027 | if (r < 0) | |
2028 | return r; | |
b8941f74 TG |
2029 | } |
2030 | ||
1c4baffc | 2031 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2032 | if (r >= 0 && mtu > 0) { |
2033 | link->mtu = mtu; | |
2034 | if (!link->original_mtu) { | |
2035 | link->original_mtu = mtu; | |
6a7a4e4d | 2036 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2037 | } |
2038 | ||
2039 | if (link->dhcp_client) { | |
3c9b8860 TG |
2040 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2041 | link->mtu); | |
afe7fd56 | 2042 | if (r < 0) { |
6a7a4e4d | 2043 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
2044 | return r; |
2045 | } | |
2046 | } | |
9842de0d | 2047 | } |
69629de9 | 2048 | |
e9189a1f TG |
2049 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2050 | set, simply ignore them. */ | |
1c4baffc | 2051 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2052 | if (r >= 0) { |
3c9b8860 TG |
2053 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2054 | ETH_ALEN)) { | |
c49b33ac | 2055 | |
3c9b8860 TG |
2056 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
2057 | ETH_ALEN); | |
c49b33ac | 2058 | |
79008bdd | 2059 | log_link_debug(link, "MAC address: " |
20861203 TG |
2060 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
2061 | mac.ether_addr_octet[0], | |
2062 | mac.ether_addr_octet[1], | |
2063 | mac.ether_addr_octet[2], | |
2064 | mac.ether_addr_octet[3], | |
2065 | mac.ether_addr_octet[4], | |
2066 | mac.ether_addr_octet[5]); | |
c49b33ac | 2067 | |
20861203 TG |
2068 | if (link->ipv4ll) { |
2069 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
2070 | if (r < 0) |
2071 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 2072 | } |
c49b33ac | 2073 | |
20861203 | 2074 | if (link->dhcp_client) { |
3c9b8860 | 2075 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
2076 | (const uint8_t *) &link->mac, |
2077 | sizeof (link->mac), | |
2078 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2079 | if (r < 0) |
2080 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
c49b33ac | 2081 | } |
4138fb2c PF |
2082 | |
2083 | if (link->dhcp6_client) { | |
2084 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, | |
76253e73 DW |
2085 | (const uint8_t *) &link->mac, |
2086 | sizeof (link->mac), | |
2087 | ARPHRD_ETHER); | |
6a7a4e4d LP |
2088 | if (r < 0) |
2089 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
4138fb2c | 2090 | } |
c49b33ac | 2091 | } |
4f882b2a TG |
2092 | } |
2093 | ||
a61bb41c TG |
2094 | had_carrier = link_has_carrier(link); |
2095 | ||
2096 | r = link_update_flags(link, m); | |
2097 | if (r < 0) | |
2098 | return r; | |
2099 | ||
2100 | carrier_gained = !had_carrier && link_has_carrier(link); | |
2101 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2102 | ||
2103 | if (carrier_gained) { | |
6a7a4e4d | 2104 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2105 | |
9c0a72f9 TG |
2106 | r = link_carrier_gained(link); |
2107 | if (r < 0) | |
2108 | return r; | |
a61bb41c | 2109 | } else if (carrier_lost) { |
6a7a4e4d | 2110 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2111 | |
9c0a72f9 TG |
2112 | r = link_carrier_lost(link); |
2113 | if (r < 0) | |
a61bb41c | 2114 | return r; |
9c0a72f9 | 2115 | |
a61bb41c TG |
2116 | } |
2117 | ||
2118 | return 0; | |
dd3efc09 | 2119 | } |
fe8db0c5 | 2120 | |
e375dcde | 2121 | static void link_update_operstate(Link *link) { |
e331e246 | 2122 | LinkOperationalState operstate; |
e375dcde TG |
2123 | assert(link); |
2124 | ||
2125 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
e331e246 | 2126 | operstate = LINK_OPERSTATE_DORMANT; |
a61bb41c | 2127 | else if (link_has_carrier(link)) { |
e375dcde TG |
2128 | Address *address; |
2129 | uint8_t scope = RT_SCOPE_NOWHERE; | |
2130 | ||
2131 | /* if we have carrier, check what addresses we have */ | |
2132 | LIST_FOREACH(addresses, address, link->addresses) { | |
81163121 TG |
2133 | if (address->flags & (IFA_F_TENTATIVE | IFA_F_DEPRECATED)) |
2134 | continue; | |
2135 | ||
e375dcde TG |
2136 | if (address->scope < scope) |
2137 | scope = address->scope; | |
2138 | } | |
2139 | ||
2140 | if (scope < RT_SCOPE_SITE) | |
2141 | /* universally accessible addresses found */ | |
e331e246 | 2142 | operstate = LINK_OPERSTATE_ROUTABLE; |
e375dcde TG |
2143 | else if (scope < RT_SCOPE_HOST) |
2144 | /* only link or site local addresses found */ | |
e331e246 | 2145 | operstate = LINK_OPERSTATE_DEGRADED; |
e375dcde TG |
2146 | else |
2147 | /* no useful addresses found */ | |
e331e246 | 2148 | operstate = LINK_OPERSTATE_CARRIER; |
54cba0b1 | 2149 | } else if (link->flags & IFF_UP) |
e331e246 | 2150 | operstate = LINK_OPERSTATE_NO_CARRIER; |
54cba0b1 | 2151 | else |
e331e246 TG |
2152 | operstate = LINK_OPERSTATE_OFF; |
2153 | ||
2154 | if (link->operstate != operstate) { | |
2155 | link->operstate = operstate; | |
2156 | link_send_changed(link, "OperationalState", NULL); | |
2157 | } | |
e375dcde TG |
2158 | } |
2159 | ||
fe8db0c5 | 2160 | int link_save(Link *link) { |
68a8723c | 2161 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2162 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2163 | const char *admin_state, *oper_state; |
fe8db0c5 TG |
2164 | int r; |
2165 | ||
2166 | assert(link); | |
2167 | assert(link->state_file); | |
68a8723c | 2168 | assert(link->lease_file); |
bbf7c048 TG |
2169 | assert(link->manager); |
2170 | ||
e375dcde TG |
2171 | link_update_operstate(link); |
2172 | ||
bbf7c048 TG |
2173 | r = manager_save(link->manager); |
2174 | if (r < 0) | |
2175 | return r; | |
fe8db0c5 | 2176 | |
370e9930 TG |
2177 | if (link->state == LINK_STATE_LINGER) { |
2178 | unlink(link->state_file); | |
2179 | return 0; | |
2180 | } | |
2181 | ||
deb2e523 TG |
2182 | admin_state = link_state_to_string(link->state); |
2183 | assert(admin_state); | |
2184 | ||
e375dcde TG |
2185 | oper_state = link_operstate_to_string(link->operstate); |
2186 | assert(oper_state); | |
deb2e523 | 2187 | |
fe8db0c5 TG |
2188 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2189 | if (r < 0) | |
6a7a4e4d | 2190 | goto fail; |
fe8db0c5 TG |
2191 | |
2192 | fchmod(fileno(f), 0644); | |
2193 | ||
2194 | fprintf(f, | |
2195 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2196 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
2197 | "OPER_STATE=%s\n", |
2198 | admin_state, oper_state); | |
fe8db0c5 | 2199 | |
bcb7a07e | 2200 | if (link->network) { |
ea352b40 LP |
2201 | char **address, **domain; |
2202 | bool space; | |
b0e39c82 | 2203 | |
adc5b2e2 TG |
2204 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2205 | ||
b0e39c82 | 2206 | fputs("DNS=", f); |
ea352b40 LP |
2207 | space = false; |
2208 | STRV_FOREACH(address, link->network->dns) { | |
2209 | if (space) | |
2210 | fputc(' ', f); | |
2211 | fputs(*address, f); | |
2212 | space = true; | |
2213 | } | |
d5314fff | 2214 | |
b0e39c82 TG |
2215 | if (link->network->dhcp_dns && |
2216 | link->dhcp_lease) { | |
2217 | const struct in_addr *addresses; | |
2218 | ||
2219 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
2220 | if (r > 0) { | |
ea352b40 LP |
2221 | if (space) |
2222 | fputc(' ', f); | |
b0e39c82 | 2223 | serialize_in_addrs(f, addresses, r); |
b0e39c82 TG |
2224 | } |
2225 | } | |
2226 | ||
b0e39c82 TG |
2227 | fputs("\n", f); |
2228 | ||
2229 | fprintf(f, "NTP="); | |
ea352b40 LP |
2230 | space = false; |
2231 | STRV_FOREACH(address, link->network->ntp) { | |
2232 | if (space) | |
2233 | fputc(' ', f); | |
2234 | fputs(*address, f); | |
2235 | space = true; | |
2236 | } | |
d5314fff | 2237 | |
b0e39c82 TG |
2238 | if (link->network->dhcp_ntp && |
2239 | link->dhcp_lease) { | |
2240 | const struct in_addr *addresses; | |
2241 | ||
2242 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
2243 | if (r > 0) { | |
ea352b40 LP |
2244 | if (space) |
2245 | fputc(' ', f); | |
b0e39c82 | 2246 | serialize_in_addrs(f, addresses, r); |
b0e39c82 TG |
2247 | } |
2248 | } | |
2249 | ||
b0e39c82 | 2250 | fputs("\n", f); |
bd8f6538 | 2251 | |
6192b846 | 2252 | fprintf(f, "DOMAINS="); |
ea352b40 LP |
2253 | space = false; |
2254 | STRV_FOREACH(domain, link->network->domains) { | |
2255 | if (space) | |
2256 | fputc(' ', f); | |
2257 | fputs(*domain, f); | |
2258 | space = true; | |
2259 | } | |
d5314fff | 2260 | |
ad0734e8 | 2261 | if (link->network->dhcp_domains && |
9b4d1882 TG |
2262 | link->dhcp_lease) { |
2263 | const char *domainname; | |
2264 | ||
2265 | r = sd_dhcp_lease_get_domainname(link->dhcp_lease, &domainname); | |
6192b846 | 2266 | if (r >= 0) { |
ea352b40 LP |
2267 | if (space) |
2268 | fputc(' ', f); | |
6192b846 | 2269 | fputs(domainname, f); |
6192b846 | 2270 | } |
9b4d1882 TG |
2271 | } |
2272 | ||
6192b846 TG |
2273 | fputs("\n", f); |
2274 | ||
67272d15 TG |
2275 | fprintf(f, "WILDCARD_DOMAIN=%s\n", |
2276 | yes_no(link->network->wildcard_domain)); | |
2277 | ||
3c9b8860 TG |
2278 | fprintf(f, "LLMNR=%s\n", |
2279 | llmnr_support_to_string(link->network->llmnr)); | |
bcb7a07e | 2280 | } |
7374f9d8 | 2281 | |
0d4ad91d AR |
2282 | if (!hashmap_isempty(link->bound_to_links)) { |
2283 | Link *carrier; | |
2284 | Iterator i; | |
2285 | bool space = false; | |
2286 | ||
2287 | fputs("CARRIER_BOUND_TO=", f); | |
2288 | HASHMAP_FOREACH(carrier, link->bound_to_links, i) { | |
2289 | if (space) | |
2290 | fputc(' ', f); | |
2291 | fputs(carrier->ifname, f); | |
2292 | space = true; | |
2293 | } | |
2294 | ||
2295 | fputs("\n", f); | |
2296 | } | |
2297 | ||
2298 | if (!hashmap_isempty(link->bound_by_links)) { | |
2299 | Link *carrier; | |
2300 | Iterator i; | |
2301 | bool space = false; | |
2302 | ||
2303 | fputs("CARRIER_BOUND_BY=", f); | |
0d4ad91d AR |
2304 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
2305 | if (space) | |
2306 | fputc(' ', f); | |
2307 | fputs(carrier->ifname, f); | |
2308 | space = true; | |
2309 | } | |
2310 | ||
2311 | fputs("\n", f); | |
2312 | } | |
2313 | ||
fe8db0c5 | 2314 | if (link->dhcp_lease) { |
d9876a52 TG |
2315 | assert(link->network); |
2316 | ||
1dc24d5f | 2317 | r = sd_dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 2318 | if (r < 0) |
c2d6bd61 | 2319 | goto fail; |
fe8db0c5 | 2320 | |
7374f9d8 | 2321 | fprintf(f, |
b0e39c82 TG |
2322 | "DHCP_LEASE=%s\n", |
2323 | link->lease_file); | |
deb2e523 | 2324 | } else |
68a8723c | 2325 | unlink(link->lease_file); |
fe8db0c5 | 2326 | |
49699bac SS |
2327 | if (link->lldp) { |
2328 | assert(link->network); | |
2329 | ||
2330 | r = sd_lldp_save(link->lldp, link->lldp_file); | |
2331 | if (r < 0) | |
2332 | goto fail; | |
2333 | ||
2334 | fprintf(f, | |
2335 | "LLDP_FILE=%s\n", | |
2336 | link->lldp_file); | |
2337 | } else | |
2338 | unlink(link->lldp_file); | |
2339 | ||
c2d6bd61 LP |
2340 | r = fflush_and_check(f); |
2341 | if (r < 0) | |
2342 | goto fail; | |
fe8db0c5 | 2343 | |
c2d6bd61 | 2344 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 2345 | r = -errno; |
c2d6bd61 | 2346 | goto fail; |
fe8db0c5 TG |
2347 | } |
2348 | ||
c2d6bd61 | 2349 | return 0; |
c2d6bd61 | 2350 | fail: |
6a7a4e4d LP |
2351 | log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
2352 | (void) unlink(link->state_file); | |
2353 | ||
2354 | if (temp_path) | |
2355 | (void) unlink(temp_path); | |
2356 | ||
fe8db0c5 TG |
2357 | return r; |
2358 | } | |
2359 | ||
2360 | static const char* const link_state_table[_LINK_STATE_MAX] = { | |
8434fd5c | 2361 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
2362 | [LINK_STATE_ENSLAVING] = "configuring", |
2363 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
2364 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
2365 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 2366 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2367 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2368 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2369 | }; |
2370 | ||
2371 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
2372 | |
2373 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
2374 | [LINK_OPERSTATE_OFF] = "off", |
2375 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
2376 | [LINK_OPERSTATE_DORMANT] = "dormant", |
2377 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
2378 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
2379 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
2380 | }; | |
2381 | ||
2382 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |