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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> | |
24 | ||
25 | #include "networkd.h" | |
26 | #include "libudev-private.h" | |
505f8da7 | 27 | #include "udev-util.h" |
f579559b | 28 | #include "util.h" |
505f8da7 | 29 | #include "virt.h" |
1346b1f0 | 30 | #include "bus-util.h" |
c6f7c917 | 31 | #include "network-internal.h" |
f579559b | 32 | |
3a67e927 | 33 | #include "network-util.h" |
fe8db0c5 TG |
34 | #include "dhcp-lease-internal.h" |
35 | ||
aba496a5 UTL |
36 | static int ipv4ll_address_update(Link *link, bool deprecate); |
37 | static bool ipv4ll_is_bound(sd_ipv4ll *ll); | |
38 | ||
505f8da7 | 39 | static int link_new(Manager *manager, sd_rtnl_message *message, Link **ret) { |
14b746f7 | 40 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 TG |
41 | uint16_t type; |
42 | char *ifname; | |
43 | int r, ifindex; | |
f579559b | 44 | |
0c2f9b84 TG |
45 | assert(manager); |
46 | assert(manager->links); | |
505f8da7 | 47 | assert(message); |
f579559b TG |
48 | assert(ret); |
49 | ||
505f8da7 TG |
50 | r = sd_rtnl_message_get_type(message, &type); |
51 | if (r < 0) | |
52 | return r; | |
53 | else if (type != RTM_NEWLINK) | |
54 | return -EINVAL; | |
55 | ||
56 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
57 | if (r < 0) | |
58 | return r; | |
59 | else if (ifindex <= 0) | |
60 | return -EINVAL; | |
61 | ||
62 | r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &ifname); | |
63 | if (r < 0) | |
64 | return r; | |
65 | ||
f579559b TG |
66 | link = new0(Link, 1); |
67 | if (!link) | |
68 | return -ENOMEM; | |
69 | ||
14b746f7 | 70 | link->n_ref = 1; |
5a3eb5a7 | 71 | link->manager = manager; |
505f8da7 TG |
72 | link->state = LINK_STATE_INITIALIZING; |
73 | link->ifindex = ifindex; | |
74 | link->ifname = strdup(ifname); | |
75 | if (!link->ifname) | |
76 | return -ENOMEM; | |
f579559b | 77 | |
512922f8 TG |
78 | r = sd_rtnl_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
79 | if (r < 0) | |
80 | return r; | |
81 | ||
85b5673b | 82 | r = asprintf(&link->state_file, "/run/systemd/netif/links/%"PRIu64, |
315db1a8 | 83 | link->ifindex); |
fe8db0c5 | 84 | if (r < 0) |
315db1a8 | 85 | return -ENOMEM; |
fe8db0c5 | 86 | |
85b5673b | 87 | r = asprintf(&link->lease_file, "/run/systemd/netif/leases/%"PRIu64, |
68a8723c TG |
88 | link->ifindex); |
89 | if (r < 0) | |
90 | return -ENOMEM; | |
91 | ||
0617ffab | 92 | r = hashmap_put(manager->links, &link->ifindex, link); |
f579559b TG |
93 | if (r < 0) |
94 | return r; | |
95 | ||
96 | *ret = link; | |
97 | link = NULL; | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
14b746f7 | 102 | static void link_free(Link *link) { |
428fd0a7 TG |
103 | Address *address; |
104 | ||
f579559b TG |
105 | if (!link) |
106 | return; | |
107 | ||
0617ffab | 108 | assert(link->manager); |
f579559b | 109 | |
428fd0a7 TG |
110 | while ((address = link->addresses)) { |
111 | LIST_REMOVE(addresses, link->addresses, address); | |
112 | address_free(address); | |
113 | } | |
114 | ||
e5b04c8d | 115 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 116 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 117 | |
68a8723c TG |
118 | unlink(link->lease_file); |
119 | free(link->lease_file); | |
120 | ||
56cd007a | 121 | sd_ipv4ll_unref(link->ipv4ll); |
5c1d3fc9 | 122 | |
0617ffab | 123 | hashmap_remove(link->manager->links, &link->ifindex); |
f579559b | 124 | |
c166a070 | 125 | free(link->ifname); |
68a8723c TG |
126 | |
127 | unlink(link->state_file); | |
fe8db0c5 | 128 | free(link->state_file); |
c166a070 | 129 | |
b5db00e5 UTL |
130 | udev_device_unref(link->udev_device); |
131 | ||
f579559b TG |
132 | free(link); |
133 | } | |
134 | ||
14b746f7 TG |
135 | Link *link_unref(Link *link) { |
136 | if (link && (-- link->n_ref <= 0)) | |
137 | link_free(link); | |
138 | ||
139 | return NULL; | |
140 | } | |
141 | ||
142 | Link *link_ref(Link *link) { | |
143 | if (link) | |
144 | assert_se(++ link->n_ref >= 2); | |
145 | ||
146 | return link; | |
147 | } | |
148 | ||
11a7f229 TG |
149 | int link_get(Manager *m, int ifindex, Link **ret) { |
150 | Link *link; | |
151 | uint64_t ifindex_64; | |
152 | ||
153 | assert(m); | |
154 | assert(m->links); | |
155 | assert(ifindex); | |
156 | assert(ret); | |
157 | ||
158 | ifindex_64 = ifindex; | |
159 | link = hashmap_get(m->links, &ifindex_64); | |
160 | if (!link) | |
161 | return -ENODEV; | |
162 | ||
163 | *ret = link; | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
370e9930 TG |
168 | void link_drop(Link *link) { |
169 | if (!link || link->state == LINK_STATE_LINGER) | |
170 | return; | |
171 | ||
172 | link->state = LINK_STATE_LINGER; | |
173 | ||
7619683b | 174 | log_debug_link(link, "link removed"); |
370e9930 TG |
175 | |
176 | link_unref(link); | |
177 | ||
178 | return; | |
179 | } | |
180 | ||
57bd6899 TG |
181 | static void link_enter_unmanaged(Link *link) { |
182 | assert(link); | |
183 | ||
df9aa406 | 184 | log_debug_link(link, "unmanaged"); |
57bd6899 TG |
185 | |
186 | link->state = LINK_STATE_UNMANAGED; | |
187 | ||
188 | link_save(link); | |
189 | } | |
190 | ||
111bb8f9 TG |
191 | static int link_stop_clients(Link *link) { |
192 | int r = 0, k; | |
193 | ||
194 | assert(link); | |
195 | assert(link->manager); | |
196 | assert(link->manager->event); | |
197 | ||
198 | if (!link->network) | |
199 | return 0; | |
200 | ||
201 | if (link->network->dhcp) { | |
202 | assert(link->dhcp_client); | |
203 | ||
204 | k = sd_dhcp_client_stop(link->dhcp_client); | |
205 | if (k < 0) { | |
206 | log_warning_link(link, "Could not stop DHCPv4 client: %s", strerror(-r)); | |
207 | r = k; | |
208 | } | |
209 | } | |
210 | ||
211 | if (link->network->ipv4ll) { | |
212 | assert(link->ipv4ll); | |
213 | ||
214 | k = sd_ipv4ll_stop(link->ipv4ll); | |
215 | if (k < 0) { | |
216 | log_warning_link(link, "Could not stop IPv4 link-local: %s", strerror(-r)); | |
217 | r = k; | |
218 | } | |
219 | } | |
220 | ||
dd43110f TG |
221 | if (link->network->dhcp_server) { |
222 | assert(link->dhcp_server); | |
223 | ||
224 | k = sd_dhcp_server_stop(link->dhcp_server); | |
225 | if (k < 0) { | |
226 | log_warning_link(link, "Could not stop DHCPv4 server: %s", strerror(-r)); | |
227 | r = k; | |
228 | } | |
229 | } | |
230 | ||
111bb8f9 TG |
231 | return r; |
232 | } | |
233 | ||
ef1ba606 TG |
234 | static void link_enter_failed(Link *link) { |
235 | assert(link); | |
f882c247 | 236 | |
370e9930 | 237 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
238 | return; |
239 | ||
39032b87 | 240 | log_warning_link(link, "failed"); |
449f7554 | 241 | |
ef1ba606 | 242 | link->state = LINK_STATE_FAILED; |
fe8db0c5 | 243 | |
111bb8f9 TG |
244 | link_stop_clients(link); |
245 | ||
fe8db0c5 | 246 | link_save(link); |
f882c247 TG |
247 | } |
248 | ||
dd43110f TG |
249 | static int link_enter_configured(Link *link) { |
250 | int r; | |
251 | ||
252 | assert(link); | |
253 | assert(link->network); | |
254 | assert(link->state == LINK_STATE_SETTING_ROUTES); | |
255 | ||
256 | ||
257 | if (link->network->dhcp_server) { | |
258 | log_debug_link(link, "offering DHCPv4 leases"); | |
259 | ||
260 | r = sd_dhcp_server_start(link->dhcp_server); | |
261 | if (r < 0) { | |
262 | log_warning_link(link, "could not start DHCPv4 server " | |
263 | "instance: %s", strerror(-r)); | |
264 | ||
265 | link_enter_failed(link); | |
266 | ||
267 | return 0; | |
268 | } | |
269 | } | |
270 | ||
271 | log_info_link(link, "link configured"); | |
272 | ||
273 | link->state = LINK_STATE_CONFIGURED; | |
274 | ||
275 | link_save(link); | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
f882c247 TG |
280 | static int route_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
281 | Link *link = userdata; | |
282 | int r; | |
283 | ||
f5be5601 | 284 | assert(link->route_messages > 0); |
370e9930 TG |
285 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
286 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
287 | LINK_STATE_LINGER)); | |
f882c247 | 288 | |
f5be5601 | 289 | link->route_messages --; |
f882c247 | 290 | |
370e9930 | 291 | if (IN_SET(LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
b226d99b | 292 | link_unref(link); |
f882c247 | 293 | return 1; |
b226d99b | 294 | } |
f882c247 TG |
295 | |
296 | r = sd_rtnl_message_get_errno(m); | |
c166a070 | 297 | if (r < 0 && r != -EEXIST) |
c9ccc19f | 298 | log_struct_link(LOG_WARNING, link, |
97578344 | 299 | "MESSAGE=%-*s: could not set route: %s", |
987efa17 | 300 | IFNAMSIZ, |
c9ccc19f TG |
301 | link->ifname, strerror(-r), |
302 | "ERRNO=%d", -r, | |
303 | NULL); | |
f882c247 | 304 | |
f5be5601 TG |
305 | /* we might have received an old reply after moving back to SETTING_ADDRESSES, |
306 | * ignore it */ | |
307 | if (link->route_messages == 0 && link->state == LINK_STATE_SETTING_ROUTES) { | |
39032b87 | 308 | log_debug_link(link, "routes set"); |
dd3efc09 TG |
309 | link_enter_configured(link); |
310 | } | |
f882c247 | 311 | |
b226d99b TG |
312 | link_unref(link); |
313 | ||
f882c247 TG |
314 | return 1; |
315 | } | |
316 | ||
317 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 318 | Route *rt; |
f882c247 TG |
319 | int r; |
320 | ||
321 | assert(link); | |
322 | assert(link->network); | |
ef1ba606 | 323 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 324 | |
ef1ba606 | 325 | link->state = LINK_STATE_SETTING_ROUTES; |
f882c247 | 326 | |
5c1d3fc9 | 327 | if (!link->network->static_routes && !link->dhcp_lease && |
370e9930 | 328 | (!link->ipv4ll || ipv4ll_is_bound(link->ipv4ll) == false)) |
dd3efc09 | 329 | return link_enter_configured(link); |
f882c247 | 330 | |
39032b87 | 331 | log_debug_link(link, "setting routes"); |
449f7554 | 332 | |
3d3d4255 | 333 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
a6cc569e | 334 | r = route_configure(rt, link, &route_handler); |
dd3efc09 | 335 | if (r < 0) { |
3333d748 ZJS |
336 | log_warning_link(link, |
337 | "could not set routes: %s", strerror(-r)); | |
ef1ba606 TG |
338 | link_enter_failed(link); |
339 | return r; | |
dd3efc09 | 340 | } |
c166a070 | 341 | |
b226d99b | 342 | link_ref(link); |
f5be5601 TG |
343 | link->route_messages ++; |
344 | } | |
345 | ||
5c1d3fc9 UTL |
346 | if (link->ipv4ll && !link->dhcp_lease) { |
347 | _cleanup_route_free_ Route *route = NULL; | |
348 | struct in_addr addr; | |
349 | ||
350 | r = sd_ipv4ll_get_address(link->ipv4ll, &addr); | |
351 | if (r < 0 && r != -ENOENT) { | |
352 | log_warning_link(link, "IPV4LL error: no address: %s", | |
353 | strerror(-r)); | |
354 | return r; | |
355 | } | |
356 | ||
357 | if (r != -ENOENT) { | |
358 | r = route_new_dynamic(&route); | |
359 | if (r < 0) { | |
360 | log_error_link(link, "Could not allocate route: %s", | |
361 | strerror(-r)); | |
362 | return r; | |
363 | } | |
364 | ||
365 | route->family = AF_INET; | |
366 | route->scope = RT_SCOPE_LINK; | |
367 | route->metrics = 99; | |
368 | ||
369 | r = route_configure(route, link, &route_handler); | |
370 | if (r < 0) { | |
371 | log_warning_link(link, | |
372 | "could not set routes: %s", strerror(-r)); | |
373 | link_enter_failed(link); | |
374 | return r; | |
375 | } | |
376 | ||
b226d99b | 377 | link_ref(link); |
5c1d3fc9 UTL |
378 | link->route_messages ++; |
379 | } | |
380 | } | |
381 | ||
a6cc569e TG |
382 | if (link->dhcp_lease) { |
383 | _cleanup_route_free_ Route *route = NULL; | |
9765ce69 | 384 | _cleanup_route_free_ Route *route_gw = NULL; |
a6cc569e TG |
385 | struct in_addr gateway; |
386 | ||
387 | r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway); | |
8ddbeaa2 UTL |
388 | if (r < 0 && r != -ENOENT) { |
389 | log_warning_link(link, "DHCP error: %s", strerror(-r)); | |
a6cc569e TG |
390 | return r; |
391 | } | |
392 | ||
8ddbeaa2 UTL |
393 | if (r >= 0) { |
394 | r = route_new_dynamic(&route); | |
395 | if (r < 0) { | |
396 | log_error_link(link, "Could not allocate route: %s", | |
397 | strerror(-r)); | |
398 | return r; | |
399 | } | |
a6cc569e | 400 | |
8ddbeaa2 UTL |
401 | r = route_new_dynamic(&route_gw); |
402 | if (r < 0) { | |
403 | log_error_link(link, "Could not allocate route: %s", | |
404 | strerror(-r)); | |
405 | return r; | |
406 | } | |
9765ce69 | 407 | |
8ddbeaa2 UTL |
408 | /* The dhcp netmask may mask out the gateway. Add an explicit |
409 | * route for the gw host so that we can route no matter the | |
410 | * netmask or existing kernel route tables. */ | |
411 | route_gw->family = AF_INET; | |
412 | route_gw->dst_addr.in = gateway; | |
413 | route_gw->dst_prefixlen = 32; | |
414 | route_gw->scope = RT_SCOPE_LINK; | |
9765ce69 | 415 | |
8ddbeaa2 UTL |
416 | r = route_configure(route_gw, link, &route_handler); |
417 | if (r < 0) { | |
418 | log_warning_link(link, | |
419 | "could not set host route: %s", strerror(-r)); | |
420 | return r; | |
421 | } | |
9765ce69 | 422 | |
b226d99b | 423 | link_ref(link); |
8ddbeaa2 | 424 | link->route_messages ++; |
9765ce69 | 425 | |
8ddbeaa2 UTL |
426 | route->family = AF_INET; |
427 | route->in_addr.in = gateway; | |
a6cc569e | 428 | |
8ddbeaa2 UTL |
429 | r = route_configure(route, link, &route_handler); |
430 | if (r < 0) { | |
431 | log_warning_link(link, | |
432 | "could not set routes: %s", strerror(-r)); | |
433 | link_enter_failed(link); | |
434 | return r; | |
435 | } | |
436 | ||
b226d99b | 437 | link_ref(link); |
8ddbeaa2 | 438 | link->route_messages ++; |
f5be5601 | 439 | } |
8ddbeaa2 | 440 | } |
f5be5601 | 441 | |
8ddbeaa2 UTL |
442 | if (link->route_messages == 0) { |
443 | link_enter_configured(link); | |
f882c247 TG |
444 | } |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
5c1d3fc9 UTL |
449 | static int route_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
450 | Link *link = userdata; | |
451 | int r; | |
452 | ||
453 | assert(m); | |
454 | assert(link); | |
455 | assert(link->ifname); | |
456 | ||
370e9930 | 457 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
b226d99b | 458 | link_unref(link); |
5c1d3fc9 | 459 | return 1; |
b226d99b | 460 | } |
5c1d3fc9 UTL |
461 | |
462 | r = sd_rtnl_message_get_errno(m); | |
b90b025a | 463 | if (r < 0 && r != -ESRCH) |
5c1d3fc9 | 464 | log_struct_link(LOG_WARNING, link, |
97578344 | 465 | "MESSAGE=%-*s: could not drop route: %s", |
987efa17 | 466 | IFNAMSIZ, |
5c1d3fc9 UTL |
467 | link->ifname, strerror(-r), |
468 | "ERRNO=%d", -r, | |
469 | NULL); | |
470 | ||
b226d99b TG |
471 | link_unref(link); |
472 | ||
5c1d3fc9 UTL |
473 | return 0; |
474 | } | |
475 | ||
f882c247 TG |
476 | static int address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
477 | Link *link = userdata; | |
478 | int r; | |
479 | ||
f5be5601 TG |
480 | assert(m); |
481 | assert(link); | |
482 | assert(link->ifname); | |
483 | assert(link->addr_messages > 0); | |
370e9930 TG |
484 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
485 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 486 | |
f5be5601 | 487 | link->addr_messages --; |
f882c247 | 488 | |
370e9930 | 489 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
b226d99b | 490 | link_unref(link); |
f882c247 | 491 | return 1; |
b226d99b | 492 | } |
f882c247 TG |
493 | |
494 | r = sd_rtnl_message_get_errno(m); | |
c166a070 | 495 | if (r < 0 && r != -EEXIST) |
c9ccc19f | 496 | log_struct_link(LOG_WARNING, link, |
97578344 | 497 | "MESSAGE=%-*s: could not set address: %s", |
987efa17 | 498 | IFNAMSIZ, |
3333d748 ZJS |
499 | link->ifname, strerror(-r), |
500 | "ERRNO=%d", -r, | |
501 | NULL); | |
f882c247 | 502 | |
f5be5601 | 503 | if (link->addr_messages == 0) { |
39032b87 | 504 | log_debug_link(link, "addresses set"); |
ef1ba606 | 505 | link_enter_set_routes(link); |
dd3efc09 | 506 | } |
f882c247 | 507 | |
b226d99b TG |
508 | link_unref(link); |
509 | ||
f882c247 TG |
510 | return 1; |
511 | } | |
512 | ||
513 | static int link_enter_set_addresses(Link *link) { | |
a6cc569e | 514 | Address *ad; |
f882c247 TG |
515 | int r; |
516 | ||
517 | assert(link); | |
518 | assert(link->network); | |
f5be5601 | 519 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 520 | |
ef1ba606 | 521 | link->state = LINK_STATE_SETTING_ADDRESSES; |
f882c247 | 522 | |
5c1d3fc9 | 523 | if (!link->network->static_addresses && !link->dhcp_lease && |
aba496a5 | 524 | (!link->ipv4ll || ipv4ll_is_bound(link->ipv4ll) == false)) |
ef1ba606 | 525 | return link_enter_set_routes(link); |
f882c247 | 526 | |
39032b87 | 527 | log_debug_link(link, "setting addresses"); |
449f7554 | 528 | |
3d3d4255 | 529 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
a6cc569e | 530 | r = address_configure(ad, link, &address_handler); |
dd3efc09 | 531 | if (r < 0) { |
3333d748 ZJS |
532 | log_warning_link(link, |
533 | "could not set addresses: %s", strerror(-r)); | |
ef1ba606 TG |
534 | link_enter_failed(link); |
535 | return r; | |
dd3efc09 | 536 | } |
c166a070 | 537 | |
b226d99b | 538 | link_ref(link); |
f5be5601 TG |
539 | link->addr_messages ++; |
540 | } | |
541 | ||
5c1d3fc9 UTL |
542 | if (link->ipv4ll && !link->dhcp_lease) { |
543 | _cleanup_address_free_ Address *ll_addr = NULL; | |
544 | struct in_addr addr; | |
545 | ||
546 | r = sd_ipv4ll_get_address(link->ipv4ll, &addr); | |
547 | if (r < 0 && r != -ENOENT) { | |
548 | log_warning_link(link, "IPV4LL error: no address: %s", | |
549 | strerror(-r)); | |
550 | return r; | |
551 | } | |
552 | ||
553 | if (r != -ENOENT) { | |
554 | r = address_new_dynamic(&ll_addr); | |
555 | if (r < 0) { | |
556 | log_error_link(link, "Could not allocate address: %s", strerror(-r)); | |
557 | return r; | |
558 | } | |
559 | ||
560 | ll_addr->family = AF_INET; | |
561 | ll_addr->in_addr.in = addr; | |
562 | ll_addr->prefixlen = 16; | |
563 | ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htonl(0xfffffffflu >> ll_addr->prefixlen); | |
564 | ll_addr->scope = RT_SCOPE_LINK; | |
565 | ||
566 | r = address_configure(ll_addr, link, &address_handler); | |
567 | if (r < 0) { | |
568 | log_warning_link(link, | |
569 | "could not set addresses: %s", strerror(-r)); | |
570 | link_enter_failed(link); | |
571 | return r; | |
572 | } | |
573 | ||
b226d99b | 574 | link_ref(link); |
5c1d3fc9 UTL |
575 | link->addr_messages ++; |
576 | } | |
577 | } | |
578 | ||
a6cc569e TG |
579 | if (link->dhcp_lease) { |
580 | _cleanup_address_free_ Address *address = NULL; | |
581 | struct in_addr addr; | |
582 | struct in_addr netmask; | |
583 | unsigned prefixlen; | |
584 | ||
585 | r = sd_dhcp_lease_get_address(link->dhcp_lease, &addr); | |
586 | if (r < 0) { | |
587 | log_warning_link(link, "DHCP error: no address: %s", | |
588 | strerror(-r)); | |
589 | return r; | |
590 | } | |
591 | ||
592 | r = sd_dhcp_lease_get_netmask(link->dhcp_lease, &netmask); | |
593 | if (r < 0) { | |
594 | log_warning_link(link, "DHCP error: no netmask: %s", | |
595 | strerror(-r)); | |
596 | return r; | |
597 | } | |
598 | ||
599 | prefixlen = net_netmask_to_prefixlen(&netmask); | |
600 | ||
601 | r = address_new_dynamic(&address); | |
602 | if (r < 0) { | |
603 | log_error_link(link, "Could not allocate address: %s", | |
604 | strerror(-r)); | |
605 | return r; | |
606 | } | |
607 | ||
608 | address->family = AF_INET; | |
609 | address->in_addr.in = addr; | |
610 | address->prefixlen = prefixlen; | |
611 | address->broadcast.s_addr = addr.s_addr | ~netmask.s_addr; | |
612 | ||
613 | r = address_configure(address, link, &address_handler); | |
f5be5601 | 614 | if (r < 0) { |
3333d748 ZJS |
615 | log_warning_link(link, |
616 | "could not set addresses: %s", strerror(-r)); | |
f5be5601 TG |
617 | link_enter_failed(link); |
618 | return r; | |
619 | } | |
620 | ||
b226d99b | 621 | link_ref(link); |
f5be5601 | 622 | link->addr_messages ++; |
f882c247 TG |
623 | } |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
aba496a5 UTL |
628 | static int address_update_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
629 | Link *link = userdata; | |
630 | int r; | |
631 | ||
632 | assert(m); | |
633 | assert(link); | |
634 | assert(link->ifname); | |
635 | ||
370e9930 | 636 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
b226d99b | 637 | link_unref(link); |
aba496a5 | 638 | return 1; |
b226d99b | 639 | } |
aba496a5 UTL |
640 | |
641 | r = sd_rtnl_message_get_errno(m); | |
642 | if (r < 0 && r != -ENOENT) | |
643 | log_struct_link(LOG_WARNING, link, | |
97578344 | 644 | "MESSAGE=%-*s: could not update address: %s", |
987efa17 | 645 | IFNAMSIZ, |
aba496a5 UTL |
646 | link->ifname, strerror(-r), |
647 | "ERRNO=%d", -r, | |
648 | NULL); | |
649 | ||
b226d99b TG |
650 | link_unref(link); |
651 | ||
aba496a5 UTL |
652 | return 0; |
653 | } | |
654 | ||
ff254138 TG |
655 | static int address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
656 | Link *link = userdata; | |
657 | int r; | |
658 | ||
659 | assert(m); | |
660 | assert(link); | |
661 | assert(link->ifname); | |
662 | ||
370e9930 | 663 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
b226d99b | 664 | link_unref(link); |
ff254138 | 665 | return 1; |
b226d99b | 666 | } |
ff254138 TG |
667 | |
668 | r = sd_rtnl_message_get_errno(m); | |
b90b025a | 669 | if (r < 0 && r != -EADDRNOTAVAIL) |
c9ccc19f | 670 | log_struct_link(LOG_WARNING, link, |
97578344 | 671 | "MESSAGE=%-*s: could not drop address: %s", |
987efa17 | 672 | IFNAMSIZ, |
c9ccc19f TG |
673 | link->ifname, strerror(-r), |
674 | "ERRNO=%d", -r, | |
675 | NULL); | |
ff254138 | 676 | |
b226d99b TG |
677 | link_unref(link); |
678 | ||
5c1d3fc9 | 679 | return 0; |
ff254138 TG |
680 | } |
681 | ||
1346b1f0 | 682 | static int set_hostname_handler(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
b226d99b | 683 | Link *link = userdata; |
1346b1f0 TG |
684 | int r; |
685 | ||
b226d99b TG |
686 | assert(link); |
687 | ||
370e9930 TG |
688 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
689 | link_unref(link); | |
690 | return 1; | |
691 | } | |
692 | ||
1346b1f0 TG |
693 | r = sd_bus_message_get_errno(m); |
694 | if (r < 0) | |
987efa17 | 695 | log_warning_link(link, "Could not set hostname: %s", strerror(-r)); |
1346b1f0 | 696 | |
b226d99b TG |
697 | link_unref(link); |
698 | ||
1346b1f0 TG |
699 | return 1; |
700 | } | |
701 | ||
b226d99b | 702 | static int link_set_hostname(Link *link, const char *hostname) { |
1346b1f0 TG |
703 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
704 | int r = 0; | |
705 | ||
b226d99b TG |
706 | assert(link); |
707 | assert(link->manager); | |
1346b1f0 TG |
708 | assert(hostname); |
709 | ||
b226d99b | 710 | log_debug_link(link, "Setting transient hostname: '%s'", hostname); |
1346b1f0 | 711 | |
b226d99b TG |
712 | if (!link->manager->bus) { /* TODO: replace by assert when we can rely on kdbus */ |
713 | log_info_link(link, "Not connected to system bus, ignoring transient hostname."); | |
bcbca829 TG |
714 | return 0; |
715 | } | |
716 | ||
1346b1f0 | 717 | r = sd_bus_message_new_method_call( |
b226d99b | 718 | link->manager->bus, |
151b9b96 | 719 | &m, |
1346b1f0 TG |
720 | "org.freedesktop.hostname1", |
721 | "/org/freedesktop/hostname1", | |
722 | "org.freedesktop.hostname1", | |
151b9b96 | 723 | "SetHostname"); |
1346b1f0 TG |
724 | if (r < 0) |
725 | return r; | |
726 | ||
727 | r = sd_bus_message_append(m, "sb", hostname, false); | |
728 | if (r < 0) | |
729 | return r; | |
730 | ||
19befb2d | 731 | r = sd_bus_call_async(link->manager->bus, NULL, m, set_hostname_handler, link, 0); |
1346b1f0 | 732 | if (r < 0) |
b226d99b TG |
733 | log_error_link(link, "Could not set transient hostname: %s", strerror(-r)); |
734 | ||
735 | link_ref(link); | |
1346b1f0 TG |
736 | |
737 | return r; | |
738 | } | |
739 | ||
4f882b2a TG |
740 | static int set_mtu_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
741 | Link *link = userdata; | |
742 | int r; | |
743 | ||
744 | assert(m); | |
745 | assert(link); | |
746 | assert(link->ifname); | |
747 | ||
370e9930 | 748 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
b226d99b | 749 | link_unref(link); |
4f882b2a | 750 | return 1; |
b226d99b | 751 | } |
4f882b2a TG |
752 | |
753 | r = sd_rtnl_message_get_errno(m); | |
c9ccc19f TG |
754 | if (r < 0) |
755 | log_struct_link(LOG_WARNING, link, | |
97578344 TG |
756 | "MESSAGE=%-*s: could not set MTU: %s", |
757 | IFNAMSIZ, link->ifname, strerror(-r), | |
c9ccc19f TG |
758 | "ERRNO=%d", -r, |
759 | NULL); | |
4f882b2a | 760 | |
b226d99b TG |
761 | link_unref(link); |
762 | ||
4f882b2a TG |
763 | return 1; |
764 | } | |
765 | ||
766 | static int link_set_mtu(Link *link, uint32_t mtu) { | |
cf6a8911 | 767 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
4f882b2a TG |
768 | int r; |
769 | ||
770 | assert(link); | |
771 | assert(link->manager); | |
772 | assert(link->manager->rtnl); | |
773 | ||
774 | log_debug_link(link, "setting MTU: %" PRIu32, mtu); | |
775 | ||
151b9b96 LP |
776 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, |
777 | RTM_SETLINK, link->ifindex); | |
4f882b2a TG |
778 | if (r < 0) { |
779 | log_error_link(link, "Could not allocate RTM_SETLINK message"); | |
780 | return r; | |
781 | } | |
782 | ||
783 | r = sd_rtnl_message_append_u32(req, IFLA_MTU, mtu); | |
784 | if (r < 0) { | |
785 | log_error_link(link, "Could not append MTU: %s", strerror(-r)); | |
786 | return r; | |
787 | } | |
788 | ||
789 | r = sd_rtnl_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); | |
790 | if (r < 0) { | |
791 | log_error_link(link, | |
792 | "Could not send rtnetlink message: %s", strerror(-r)); | |
793 | return r; | |
794 | } | |
795 | ||
b226d99b TG |
796 | link_unref(link); |
797 | ||
4f882b2a TG |
798 | return 0; |
799 | } | |
800 | ||
a6cc569e TG |
801 | static int dhcp_lease_lost(Link *link) { |
802 | _cleanup_address_free_ Address *address = NULL; | |
3e790eae UTL |
803 | _cleanup_route_free_ Route *route_gw = NULL; |
804 | _cleanup_route_free_ Route *route = NULL; | |
a6cc569e TG |
805 | struct in_addr addr; |
806 | struct in_addr netmask; | |
3e790eae | 807 | struct in_addr gateway; |
a6cc569e | 808 | unsigned prefixlen; |
ff254138 TG |
809 | int r; |
810 | ||
811 | assert(link); | |
a6cc569e | 812 | assert(link->dhcp_lease); |
ff254138 | 813 | |
14efd761 TG |
814 | log_warning_link(link, "DHCP lease lost"); |
815 | ||
a6cc569e TG |
816 | r = address_new_dynamic(&address); |
817 | if (r >= 0) { | |
8ddbeaa2 | 818 | r = sd_dhcp_lease_get_router(link->dhcp_lease, &gateway); |
3e790eae | 819 | if (r >= 0) { |
8ddbeaa2 UTL |
820 | r = route_new_dynamic(&route_gw); |
821 | if (r >= 0) { | |
822 | route_gw->family = AF_INET; | |
823 | route_gw->dst_addr.in = gateway; | |
824 | route_gw->dst_prefixlen = 32; | |
825 | route_gw->scope = RT_SCOPE_LINK; | |
826 | ||
827 | route_drop(route_gw, link, &route_drop_handler); | |
b226d99b | 828 | link_ref(link); |
8ddbeaa2 | 829 | } |
3e790eae | 830 | |
8ddbeaa2 UTL |
831 | r = route_new_dynamic(&route); |
832 | if (r >= 0) { | |
833 | route->family = AF_INET; | |
834 | route->in_addr.in = gateway; | |
3e790eae | 835 | |
8ddbeaa2 | 836 | route_drop(route, link, &route_drop_handler); |
b226d99b | 837 | link_ref(link); |
8ddbeaa2 | 838 | } |
3e790eae UTL |
839 | } |
840 | ||
8ddbeaa2 UTL |
841 | sd_dhcp_lease_get_address(link->dhcp_lease, &addr); |
842 | sd_dhcp_lease_get_netmask(link->dhcp_lease, &netmask); | |
843 | prefixlen = net_netmask_to_prefixlen(&netmask); | |
844 | ||
a6cc569e TG |
845 | address->family = AF_INET; |
846 | address->in_addr.in = addr; | |
847 | address->prefixlen = prefixlen; | |
ff254138 | 848 | |
5c1d3fc9 | 849 | address_drop(address, link, &address_drop_handler); |
b226d99b | 850 | link_ref(link); |
c07aeadf | 851 | } |
eb27aeca | 852 | |
c07aeadf TG |
853 | if (link->network->dhcp_mtu) { |
854 | uint16_t mtu; | |
ff254138 | 855 | |
a6cc569e | 856 | r = sd_dhcp_lease_get_mtu(link->dhcp_lease, &mtu); |
c07aeadf TG |
857 | if (r >= 0 && link->original_mtu != mtu) { |
858 | r = link_set_mtu(link, link->original_mtu); | |
859 | if (r < 0) { | |
860 | log_warning_link(link, "DHCP error: could not reset MTU"); | |
861 | link_enter_failed(link); | |
862 | return r; | |
863 | } | |
ff254138 | 864 | } |
c07aeadf | 865 | } |
ff254138 | 866 | |
c07aeadf | 867 | if (link->network->dhcp_hostname) { |
216816c6 TG |
868 | const char *hostname = NULL; |
869 | ||
870 | r = sd_dhcp_lease_get_hostname(link->dhcp_lease, &hostname); | |
871 | if (r >= 0 && hostname) { | |
b226d99b | 872 | r = link_set_hostname(link, ""); |
216816c6 | 873 | if (r < 0) |
987efa17 | 874 | log_error_link(link, "Failed to reset transient hostname"); |
216816c6 | 875 | } |
c07aeadf | 876 | } |
4f882b2a | 877 | |
a6cc569e TG |
878 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); |
879 | ||
c07aeadf TG |
880 | return 0; |
881 | } | |
4f882b2a | 882 | |
c07aeadf | 883 | static int dhcp_lease_acquired(sd_dhcp_client *client, Link *link) { |
a6cc569e | 884 | sd_dhcp_lease *lease; |
c07aeadf TG |
885 | struct in_addr address; |
886 | struct in_addr netmask; | |
887 | struct in_addr gateway; | |
888 | unsigned prefixlen; | |
c07aeadf | 889 | int r; |
1346b1f0 | 890 | |
c07aeadf TG |
891 | assert(client); |
892 | assert(link); | |
ff254138 | 893 | |
a6cc569e TG |
894 | r = sd_dhcp_client_get_lease(client, &lease); |
895 | if (r < 0) { | |
896 | log_warning_link(link, "DHCP error: no lease: %s", | |
897 | strerror(-r)); | |
898 | return r; | |
899 | } | |
900 | ||
901 | r = sd_dhcp_lease_get_address(lease, &address); | |
ff254138 | 902 | if (r < 0) { |
c07aeadf TG |
903 | log_warning_link(link, "DHCP error: no address: %s", |
904 | strerror(-r)); | |
905 | return r; | |
ff254138 TG |
906 | } |
907 | ||
a6cc569e | 908 | r = sd_dhcp_lease_get_netmask(lease, &netmask); |
ff254138 | 909 | if (r < 0) { |
c07aeadf TG |
910 | log_warning_link(link, "DHCP error: no netmask: %s", |
911 | strerror(-r)); | |
912 | return r; | |
ff254138 TG |
913 | } |
914 | ||
377a218f | 915 | prefixlen = net_netmask_to_prefixlen(&netmask); |
ff254138 | 916 | |
a6cc569e | 917 | r = sd_dhcp_lease_get_router(lease, &gateway); |
8ddbeaa2 UTL |
918 | if (r < 0 && r != -ENOENT) { |
919 | log_warning_link(link, "DHCP error: %s", strerror(-r)); | |
c07aeadf | 920 | return r; |
ff254138 TG |
921 | } |
922 | ||
8ddbeaa2 UTL |
923 | if (r >= 0) |
924 | log_struct_link(LOG_INFO, link, | |
97578344 | 925 | "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u via %u.%u.%u.%u", |
987efa17 | 926 | IFNAMSIZ, |
8ddbeaa2 UTL |
927 | link->ifname, |
928 | ADDRESS_FMT_VAL(address), | |
929 | prefixlen, | |
930 | ADDRESS_FMT_VAL(gateway), | |
931 | "ADDRESS=%u.%u.%u.%u", | |
932 | ADDRESS_FMT_VAL(address), | |
933 | "PREFIXLEN=%u", | |
934 | prefixlen, | |
935 | "GATEWAY=%u.%u.%u.%u", | |
936 | ADDRESS_FMT_VAL(gateway), | |
937 | NULL); | |
938 | else | |
939 | log_struct_link(LOG_INFO, link, | |
97578344 | 940 | "MESSAGE=%-*s: DHCPv4 address %u.%u.%u.%u/%u", |
987efa17 | 941 | IFNAMSIZ, |
8ddbeaa2 UTL |
942 | link->ifname, |
943 | ADDRESS_FMT_VAL(address), | |
944 | prefixlen, | |
945 | "ADDRESS=%u.%u.%u.%u", | |
946 | ADDRESS_FMT_VAL(address), | |
947 | "PREFIXLEN=%u", | |
948 | prefixlen, | |
949 | NULL); | |
c07aeadf | 950 | |
d50cf59b TG |
951 | link->dhcp_lease = lease; |
952 | ||
c07aeadf TG |
953 | if (link->network->dhcp_mtu) { |
954 | uint16_t mtu; | |
955 | ||
a6cc569e | 956 | r = sd_dhcp_lease_get_mtu(lease, &mtu); |
c07aeadf TG |
957 | if (r >= 0) { |
958 | r = link_set_mtu(link, mtu); | |
959 | if (r < 0) | |
960 | log_error_link(link, "Failed to set MTU " | |
961 | "to %" PRIu16, mtu); | |
962 | } | |
963 | } | |
ff254138 | 964 | |
c07aeadf TG |
965 | if (link->network->dhcp_hostname) { |
966 | const char *hostname; | |
ff254138 | 967 | |
a6cc569e | 968 | r = sd_dhcp_lease_get_hostname(lease, &hostname); |
c07aeadf | 969 | if (r >= 0) { |
b226d99b | 970 | r = link_set_hostname(link, hostname); |
c07aeadf | 971 | if (r < 0) |
987efa17 | 972 | log_error_link(link, "Failed to set transient hostname " |
c07aeadf | 973 | "to '%s'", hostname); |
3bef724f | 974 | } |
c07aeadf | 975 | } |
3bef724f | 976 | |
c07aeadf TG |
977 | link_enter_set_addresses(link); |
978 | ||
979 | return 0; | |
980 | } | |
981 | ||
982 | static void dhcp_handler(sd_dhcp_client *client, int event, void *userdata) { | |
983 | Link *link = userdata; | |
aba496a5 | 984 | int r = 0; |
c07aeadf TG |
985 | |
986 | assert(link); | |
987 | assert(link->network); | |
988 | assert(link->manager); | |
989 | ||
370e9930 | 990 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
c07aeadf TG |
991 | return; |
992 | ||
993 | switch (event) { | |
994 | case DHCP_EVENT_NO_LEASE: | |
995 | log_debug_link(link, "IP address in use."); | |
996 | break; | |
997 | case DHCP_EVENT_EXPIRED: | |
998 | case DHCP_EVENT_STOP: | |
999 | case DHCP_EVENT_IP_CHANGE: | |
1000 | if (link->network->dhcp_critical) { | |
1001 | log_error_link(link, "DHCPv4 connection considered system critical, " | |
1002 | "ignoring request to reconfigure it."); | |
1003 | return; | |
4f882b2a | 1004 | } |
4f882b2a | 1005 | |
17256461 UTL |
1006 | if (link->dhcp_lease) { |
1007 | r = dhcp_lease_lost(link); | |
1008 | if (r < 0) { | |
1009 | link_enter_failed(link); | |
1010 | return; | |
1011 | } | |
c07aeadf | 1012 | } |
1346b1f0 | 1013 | |
c07aeadf TG |
1014 | if (event == DHCP_EVENT_IP_CHANGE) { |
1015 | r = dhcp_lease_acquired(client, link); | |
1016 | if (r < 0) { | |
1017 | link_enter_failed(link); | |
1018 | return; | |
1019 | } | |
1346b1f0 | 1020 | } |
1346b1f0 | 1021 | |
5c1d3fc9 | 1022 | if (event == DHCP_EVENT_EXPIRED && link->network->ipv4ll) { |
aba496a5 UTL |
1023 | if (!sd_ipv4ll_is_running(link->ipv4ll)) |
1024 | r = sd_ipv4ll_start(link->ipv4ll); | |
1025 | else if (ipv4ll_is_bound(link->ipv4ll)) | |
1026 | r = ipv4ll_address_update(link, false); | |
5c1d3fc9 UTL |
1027 | if (r < 0) { |
1028 | link_enter_failed(link); | |
1029 | return; | |
1030 | } | |
1031 | } | |
1032 | ||
c07aeadf TG |
1033 | break; |
1034 | case DHCP_EVENT_IP_ACQUIRE: | |
1035 | r = dhcp_lease_acquired(client, link); | |
1036 | if (r < 0) { | |
1037 | link_enter_failed(link); | |
1038 | return; | |
1039 | } | |
5c1d3fc9 | 1040 | if (link->ipv4ll) { |
aba496a5 UTL |
1041 | if (ipv4ll_is_bound(link->ipv4ll)) |
1042 | r = ipv4ll_address_update(link, true); | |
1043 | else | |
1044 | r = sd_ipv4ll_stop(link->ipv4ll); | |
5c1d3fc9 UTL |
1045 | if (r < 0) { |
1046 | link_enter_failed(link); | |
1047 | return; | |
1048 | } | |
1049 | } | |
c07aeadf TG |
1050 | break; |
1051 | default: | |
1052 | if (event < 0) | |
1053 | log_warning_link(link, "DHCP error: %s", strerror(-event)); | |
1054 | else | |
1055 | log_warning_link(link, "DHCP unknown event: %d", event); | |
c07aeadf | 1056 | break; |
ff254138 TG |
1057 | } |
1058 | ||
1059 | return; | |
1060 | } | |
1061 | ||
aba496a5 UTL |
1062 | static int ipv4ll_address_update(Link *link, bool deprecate) { |
1063 | int r; | |
1064 | struct in_addr addr; | |
1065 | ||
1066 | assert(link); | |
1067 | ||
1068 | r = sd_ipv4ll_get_address(link->ipv4ll, &addr); | |
1069 | if (r >= 0) { | |
1070 | _cleanup_address_free_ Address *address = NULL; | |
1071 | ||
1072 | log_debug_link(link, "IPv4 link-local %s %u.%u.%u.%u", | |
1073 | deprecate ? "deprecate" : "approve", | |
1074 | ADDRESS_FMT_VAL(addr)); | |
1075 | ||
1076 | r = address_new_dynamic(&address); | |
1077 | if (r < 0) { | |
1078 | log_error_link(link, "Could not allocate address: %s", strerror(-r)); | |
1079 | return r; | |
1080 | } | |
1081 | ||
1082 | address->family = AF_INET; | |
1083 | address->in_addr.in = addr; | |
1084 | address->prefixlen = 16; | |
1085 | address->scope = RT_SCOPE_LINK; | |
1086 | address->cinfo.ifa_prefered = deprecate ? 0 : CACHE_INFO_INFINITY_LIFE_TIME; | |
1087 | address->broadcast.s_addr = address->in_addr.in.s_addr | htonl(0xfffffffflu >> address->prefixlen); | |
1088 | ||
1089 | address_update(address, link, &address_update_handler); | |
b226d99b | 1090 | link_ref(link); |
aba496a5 UTL |
1091 | } |
1092 | ||
1093 | return 0; | |
1094 | ||
1095 | } | |
1096 | ||
1097 | static int ipv4ll_address_lost(Link *link) { | |
5c1d3fc9 UTL |
1098 | int r; |
1099 | struct in_addr addr; | |
1100 | ||
5c1d3fc9 UTL |
1101 | assert(link); |
1102 | ||
1103 | r = sd_ipv4ll_get_address(link->ipv4ll, &addr); | |
1104 | if (r >= 0) { | |
1105 | _cleanup_address_free_ Address *address = NULL; | |
1106 | _cleanup_route_free_ Route *route = NULL; | |
1107 | ||
1108 | log_debug_link(link, "IPv4 link-local release %u.%u.%u.%u", | |
1109 | ADDRESS_FMT_VAL(addr)); | |
1110 | ||
1111 | r = address_new_dynamic(&address); | |
1112 | if (r < 0) { | |
1113 | log_error_link(link, "Could not allocate address: %s", strerror(-r)); | |
1114 | return r; | |
1115 | } | |
1116 | ||
1117 | address->family = AF_INET; | |
1118 | address->in_addr.in = addr; | |
1119 | address->prefixlen = 16; | |
1120 | address->scope = RT_SCOPE_LINK; | |
1121 | ||
1122 | address_drop(address, link, &address_drop_handler); | |
b226d99b | 1123 | link_ref(link); |
5c1d3fc9 UTL |
1124 | |
1125 | r = route_new_dynamic(&route); | |
1126 | if (r < 0) { | |
1127 | log_error_link(link, "Could not allocate route: %s", | |
1128 | strerror(-r)); | |
1129 | return r; | |
1130 | } | |
1131 | ||
1132 | route->family = AF_INET; | |
1133 | route->scope = RT_SCOPE_LINK; | |
1134 | route->metrics = 99; | |
1135 | ||
1136 | route_drop(route, link, &route_drop_handler); | |
b226d99b | 1137 | link_ref(link); |
5c1d3fc9 UTL |
1138 | } |
1139 | ||
1140 | return 0; | |
1141 | } | |
1142 | ||
aba496a5 UTL |
1143 | static bool ipv4ll_is_bound(sd_ipv4ll *ll) { |
1144 | int r; | |
1145 | struct in_addr addr; | |
1146 | ||
1147 | assert(ll); | |
1148 | ||
1149 | r = sd_ipv4ll_get_address(ll, &addr); | |
1150 | if (r < 0) | |
1151 | return false; | |
1152 | return true; | |
1153 | } | |
1154 | ||
5c1d3fc9 UTL |
1155 | static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) { |
1156 | struct in_addr address; | |
1157 | int r; | |
1158 | ||
1159 | assert(ll); | |
1160 | assert(link); | |
1161 | ||
1162 | r = sd_ipv4ll_get_address(ll, &address); | |
1163 | if (r < 0) | |
1164 | return r; | |
1165 | ||
1166 | log_struct_link(LOG_INFO, link, | |
97578344 | 1167 | "MESSAGE=%-*s: IPv4 link-local address %u.%u.%u.%u", |
987efa17 | 1168 | IFNAMSIZ, |
5c1d3fc9 UTL |
1169 | link->ifname, |
1170 | ADDRESS_FMT_VAL(address), | |
1171 | NULL); | |
1172 | ||
1173 | link_enter_set_addresses(link); | |
1174 | ||
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | static void ipv4ll_handler(sd_ipv4ll *ll, int event, void *userdata){ | |
1179 | Link *link = userdata; | |
1180 | int r; | |
1181 | ||
1182 | assert(link); | |
1183 | assert(link->network); | |
1184 | assert(link->manager); | |
1185 | ||
370e9930 TG |
1186 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1187 | return; | |
1188 | ||
5c1d3fc9 UTL |
1189 | switch(event) { |
1190 | case IPV4LL_EVENT_STOP: | |
1191 | case IPV4LL_EVENT_CONFLICT: | |
aba496a5 | 1192 | r = ipv4ll_address_lost(link); |
5c1d3fc9 UTL |
1193 | if (r < 0) { |
1194 | link_enter_failed(link); | |
1195 | return; | |
1196 | } | |
1197 | break; | |
1198 | case IPV4LL_EVENT_BIND: | |
1199 | r = ipv4ll_address_claimed(ll, link); | |
1200 | if (r < 0) { | |
1201 | link_enter_failed(link); | |
1202 | return; | |
1203 | } | |
1204 | break; | |
1205 | default: | |
1206 | if (event < 0) | |
1207 | log_warning_link(link, "IPv4 link-local error: %s", strerror(-event)); | |
1208 | else | |
1209 | log_warning_link(link, "IPv4 link-local unknown event: %d", event); | |
1210 | break; | |
1211 | } | |
1212 | } | |
1213 | ||
ff254138 TG |
1214 | static int link_acquire_conf(Link *link) { |
1215 | int r; | |
1216 | ||
1217 | assert(link); | |
1218 | assert(link->network); | |
ff254138 TG |
1219 | assert(link->manager); |
1220 | assert(link->manager->event); | |
1221 | ||
5c1d3fc9 | 1222 | if (link->network->ipv4ll) { |
eb34d4af | 1223 | assert(link->ipv4ll); |
ff254138 | 1224 | |
5c1d3fc9 UTL |
1225 | log_debug_link(link, "acquiring IPv4 link-local address"); |
1226 | ||
1227 | r = sd_ipv4ll_start(link->ipv4ll); | |
124fa2c6 TG |
1228 | if (r < 0) { |
1229 | log_warning_link(link, "could not acquire IPv4 " | |
1230 | "link-local address"); | |
ff254138 | 1231 | return r; |
124fa2c6 | 1232 | } |
5c1d3fc9 UTL |
1233 | } |
1234 | ||
1235 | if (link->network->dhcp) { | |
eb34d4af | 1236 | assert(link->dhcp_client); |
ff254138 | 1237 | |
5c1d3fc9 | 1238 | log_debug_link(link, "acquiring DHCPv4 lease"); |
ab47d620 | 1239 | |
5c1d3fc9 | 1240 | r = sd_dhcp_client_start(link->dhcp_client); |
124fa2c6 TG |
1241 | if (r < 0) { |
1242 | log_warning_link(link, "could not acquire DHCPv4 " | |
1243 | "lease"); | |
5c1d3fc9 | 1244 | return r; |
124fa2c6 | 1245 | } |
5c1d3fc9 | 1246 | } |
ff254138 TG |
1247 | |
1248 | return 0; | |
1249 | } | |
1250 | ||
bbf7c048 | 1251 | bool link_has_carrier(unsigned flags, uint8_t operstate) { |
deb2e523 TG |
1252 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1253 | ||
1254 | if (operstate == IF_OPER_UP) | |
1255 | return true; | |
1256 | ||
1257 | if (operstate == IF_OPER_UNKNOWN) | |
1258 | /* operstate may not be implemented, so fall back to flags */ | |
1259 | if ((flags & IFF_LOWER_UP) && !(flags & IFF_DORMANT)) | |
1260 | return true; | |
1261 | ||
1262 | return false; | |
1263 | } | |
1264 | ||
389cc5f7 TG |
1265 | #define FLAG_STRING(string, flag, old, new) \ |
1266 | (((old ^ new) & flag) \ | |
1267 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
1268 | : "") | |
1269 | ||
1e9be60b | 1270 | static int link_update_flags(Link *link, sd_rtnl_message *m) { |
389cc5f7 | 1271 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
1e9be60b TG |
1272 | uint8_t operstate; |
1273 | bool carrier_gained = false, carrier_lost = false; | |
ff254138 TG |
1274 | int r; |
1275 | ||
1276 | assert(link); | |
ff254138 | 1277 | |
1e9be60b TG |
1278 | r = sd_rtnl_message_link_get_flags(m, &flags); |
1279 | if (r < 0) { | |
1280 | log_warning_link(link, "Could not get link flags"); | |
1281 | return r; | |
1282 | } | |
1283 | ||
1284 | r = sd_rtnl_message_read_u8(m, IFLA_OPERSTATE, &operstate); | |
1285 | if (r < 0) | |
1286 | /* if we got a message without operstate, take it to mean | |
1287 | the state was unchanged */ | |
e375dcde | 1288 | operstate = link->kernel_operstate; |
1e9be60b | 1289 | |
e375dcde | 1290 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) |
efbc88b8 | 1291 | return 0; |
efbc88b8 | 1292 | |
389cc5f7 TG |
1293 | if (link->flags != flags) { |
1294 | log_debug_link(link, "flags change:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", | |
1295 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), | |
1296 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
1297 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
1298 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
1299 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
1300 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
1301 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
1302 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
1303 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
1304 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
1305 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
1306 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
1307 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
1308 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
1309 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
1310 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
1311 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
1312 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
1313 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
1314 | ||
1315 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
1316 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
1317 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
1318 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
1319 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
1320 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
1321 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
1322 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
1323 | ||
1324 | /* link flags are currently at most 18 bits, let's align to printing 20 */ | |
1325 | if (unknown_flags_added) | |
1326 | log_debug_link(link, "unknown link flags gained: %#.5x (ignoring)", | |
1327 | unknown_flags_added); | |
1328 | ||
1329 | if (unknown_flags_removed) | |
1330 | log_debug_link(link, "unknown link flags lost: %#.5x (ignoring)", | |
1331 | unknown_flags_removed); | |
1332 | } | |
505f8da7 | 1333 | |
e375dcde | 1334 | carrier_gained = !link_has_carrier(link->flags, link->kernel_operstate) && |
1e9be60b | 1335 | link_has_carrier(flags, operstate); |
e375dcde | 1336 | carrier_lost = link_has_carrier(link->flags, link->kernel_operstate) && |
1e9be60b TG |
1337 | !link_has_carrier(flags, operstate); |
1338 | ||
1339 | link->flags = flags; | |
e375dcde | 1340 | link->kernel_operstate = operstate; |
1e9be60b | 1341 | |
deb2e523 TG |
1342 | link_save(link); |
1343 | ||
99b4cc3e TG |
1344 | if (link->state == LINK_STATE_FAILED || |
1345 | link->state == LINK_STATE_UNMANAGED) | |
1346 | return 0; | |
1347 | ||
7cc832b9 TG |
1348 | if (carrier_gained) { |
1349 | log_info_link(link, "gained carrier"); | |
ffba6166 | 1350 | |
1e9be60b | 1351 | if (link->network) { |
ffba6166 TG |
1352 | r = link_acquire_conf(link); |
1353 | if (r < 0) { | |
ffba6166 TG |
1354 | link_enter_failed(link); |
1355 | return r; | |
ff254138 | 1356 | } |
ffba6166 | 1357 | } |
7cc832b9 TG |
1358 | } else if (carrier_lost) { |
1359 | log_info_link(link, "lost carrier"); | |
efbc88b8 | 1360 | |
1e9be60b TG |
1361 | r = link_stop_clients(link); |
1362 | if (r < 0) { | |
1363 | link_enter_failed(link); | |
1364 | return r; | |
ff254138 TG |
1365 | } |
1366 | } | |
1367 | ||
ff254138 TG |
1368 | return 0; |
1369 | } | |
1370 | ||
dd3efc09 TG |
1371 | static int link_up_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
1372 | Link *link = userdata; | |
1373 | int r; | |
1374 | ||
1746cf2a TG |
1375 | assert(link); |
1376 | ||
370e9930 | 1377 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
b226d99b | 1378 | link_unref(link); |
1746cf2a | 1379 | return 1; |
b226d99b | 1380 | } |
1746cf2a | 1381 | |
dd3efc09 | 1382 | r = sd_rtnl_message_get_errno(m); |
45ad2c13 | 1383 | if (r < 0) { |
9b86b393 TG |
1384 | /* we warn but don't fail the link, as it may |
1385 | be brought up later */ | |
76800848 | 1386 | log_struct_link(LOG_WARNING, link, |
97578344 | 1387 | "MESSAGE=%-*s: could not bring up interface: %s", |
987efa17 | 1388 | IFNAMSIZ, |
c9ccc19f TG |
1389 | link->ifname, strerror(-r), |
1390 | "ERRNO=%d", -r, | |
1391 | NULL); | |
45ad2c13 TG |
1392 | } |
1393 | ||
b226d99b TG |
1394 | link_unref(link); |
1395 | ||
f882c247 TG |
1396 | return 1; |
1397 | } | |
1398 | ||
1399 | static int link_up(Link *link) { | |
cf6a8911 | 1400 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
f579559b TG |
1401 | int r; |
1402 | ||
f882c247 TG |
1403 | assert(link); |
1404 | assert(link->manager); | |
1405 | assert(link->manager->rtnl); | |
1406 | ||
39032b87 | 1407 | log_debug_link(link, "bringing link up"); |
449f7554 | 1408 | |
151b9b96 LP |
1409 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, |
1410 | RTM_SETLINK, link->ifindex); | |
f579559b | 1411 | if (r < 0) { |
39032b87 | 1412 | log_error_link(link, "Could not allocate RTM_SETLINK message"); |
f579559b TG |
1413 | return r; |
1414 | } | |
1415 | ||
5d4795f3 | 1416 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
fc25d7f8 | 1417 | if (r < 0) { |
3333d748 | 1418 | log_error_link(link, "Could not set link flags: %s", strerror(-r)); |
fc25d7f8 TG |
1419 | return r; |
1420 | } | |
1421 | ||
dd3efc09 | 1422 | r = sd_rtnl_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
f579559b | 1423 | if (r < 0) { |
3333d748 ZJS |
1424 | log_error_link(link, |
1425 | "Could not send rtnetlink message: %s", strerror(-r)); | |
f579559b TG |
1426 | return r; |
1427 | } | |
1428 | ||
b226d99b TG |
1429 | link_ref(link); |
1430 | ||
f882c247 TG |
1431 | return 0; |
1432 | } | |
1433 | ||
52433f6b | 1434 | static int link_enslaved(Link *link) { |
f882c247 TG |
1435 | int r; |
1436 | ||
ef1ba606 | 1437 | assert(link); |
52433f6b | 1438 | assert(link->state == LINK_STATE_ENSLAVING); |
f5be5601 | 1439 | assert(link->network); |
dd3efc09 | 1440 | |
505f8da7 TG |
1441 | if (!(link->flags & IFF_UP)) { |
1442 | r = link_up(link); | |
1443 | if (r < 0) { | |
1444 | link_enter_failed(link); | |
1445 | return r; | |
1446 | } | |
ef1ba606 | 1447 | } |
f882c247 | 1448 | |
5c1d3fc9 | 1449 | if (!link->network->dhcp && !link->network->ipv4ll) |
1746cf2a | 1450 | return link_enter_set_addresses(link); |
ef1ba606 TG |
1451 | |
1452 | return 0; | |
02b59d57 TG |
1453 | } |
1454 | ||
52433f6b | 1455 | static int enslave_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
02b59d57 TG |
1456 | Link *link = userdata; |
1457 | int r; | |
1458 | ||
1746cf2a | 1459 | assert(link); |
370e9930 TG |
1460 | assert(IN_SET(link->state, LINK_STATE_ENSLAVING, LINK_STATE_FAILED, |
1461 | LINK_STATE_LINGER)); | |
ef1ba606 | 1462 | assert(link->network); |
02b59d57 | 1463 | |
52433f6b TG |
1464 | link->enslaving --; |
1465 | ||
370e9930 | 1466 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
b226d99b | 1467 | link_unref(link); |
02b59d57 | 1468 | return 1; |
b226d99b | 1469 | } |
02b59d57 TG |
1470 | |
1471 | r = sd_rtnl_message_get_errno(m); | |
ef1ba606 | 1472 | if (r < 0) { |
c9ccc19f | 1473 | log_struct_link(LOG_ERR, link, |
97578344 | 1474 | "MESSAGE=%-*s: could not enslave: %s", |
987efa17 | 1475 | IFNAMSIZ, |
c9ccc19f TG |
1476 | link->ifname, strerror(-r), |
1477 | "ERRNO=%d", -r, | |
1478 | NULL); | |
ef1ba606 | 1479 | link_enter_failed(link); |
b226d99b | 1480 | link_unref(link); |
ef1ba606 | 1481 | return 1; |
3333d748 | 1482 | } |
02b59d57 | 1483 | |
52433f6b | 1484 | log_debug_link(link, "enslaved"); |
ab47d620 | 1485 | |
52433f6b TG |
1486 | if (link->enslaving == 0) |
1487 | link_enslaved(link); | |
02b59d57 | 1488 | |
b226d99b TG |
1489 | link_unref(link); |
1490 | ||
02b59d57 TG |
1491 | return 1; |
1492 | } | |
1493 | ||
52433f6b | 1494 | static int link_enter_enslave(Link *link) { |
fe6b2d55 | 1495 | NetDev *vlan, *macvlan; |
672682a6 | 1496 | Iterator i; |
02b59d57 TG |
1497 | int r; |
1498 | ||
1499 | assert(link); | |
1500 | assert(link->network); | |
505f8da7 | 1501 | assert(link->state == LINK_STATE_INITIALIZING); |
02b59d57 | 1502 | |
52433f6b | 1503 | link->state = LINK_STATE_ENSLAVING; |
02b59d57 | 1504 | |
fe8db0c5 TG |
1505 | link_save(link); |
1506 | ||
7951dea2 SS |
1507 | if (!link->network->bridge && |
1508 | !link->network->bond && | |
1509 | !link->network->tunnel && | |
fe6b2d55 TG |
1510 | hashmap_isempty(link->network->vlans) && |
1511 | hashmap_isempty(link->network->macvlans)) | |
52433f6b | 1512 | return link_enslaved(link); |
02b59d57 | 1513 | |
d9c67ea1 | 1514 | if (link->network->bond) { |
52433f6b | 1515 | log_struct_link(LOG_DEBUG, link, |
97578344 | 1516 | "MESSAGE=%-*s: enslaving by '%s'", |
987efa17 | 1517 | IFNAMSIZ, |
af4e9e2c | 1518 | link->ifname, link->network->bond->ifname, |
d9c67ea1 | 1519 | NETDEV(link->network->bond), |
52433f6b | 1520 | NULL); |
449f7554 | 1521 | |
d9c67ea1 | 1522 | r = netdev_enslave(link->network->bond, link, &enslave_handler); |
52433f6b TG |
1523 | if (r < 0) { |
1524 | log_struct_link(LOG_WARNING, link, | |
97578344 | 1525 | "MESSAGE=%-*s: could not enslave by '%s': %s", |
987efa17 | 1526 | IFNAMSIZ, |
af4e9e2c | 1527 | link->ifname, link->network->bond->ifname, strerror(-r), |
d9c67ea1 | 1528 | NETDEV(link->network->bond), |
52433f6b TG |
1529 | NULL); |
1530 | link_enter_failed(link); | |
1531 | return r; | |
1532 | } | |
1533 | ||
b226d99b | 1534 | link_ref(link); |
0ad6148e MO |
1535 | link->enslaving ++; |
1536 | } | |
1537 | ||
d9c67ea1 | 1538 | if (link->network->bridge) { |
0ad6148e | 1539 | log_struct_link(LOG_DEBUG, link, |
97578344 | 1540 | "MESSAGE=%-*s: enslaving by '%s'", |
987efa17 | 1541 | IFNAMSIZ, |
af4e9e2c | 1542 | link->ifname, link->network->bridge->ifname, |
d9c67ea1 | 1543 | NETDEV(link->network->bridge), |
0ad6148e MO |
1544 | NULL); |
1545 | ||
d9c67ea1 | 1546 | r = netdev_enslave(link->network->bridge, link, &enslave_handler); |
0ad6148e MO |
1547 | if (r < 0) { |
1548 | log_struct_link(LOG_WARNING, link, | |
97578344 | 1549 | "MESSAGE=%-*s: could not enslave by '%s': %s", |
987efa17 | 1550 | IFNAMSIZ, |
af4e9e2c | 1551 | link->ifname, link->network->bridge->ifname, strerror(-r), |
d9c67ea1 | 1552 | NETDEV(link->network->bridge), |
0ad6148e MO |
1553 | NULL); |
1554 | link_enter_failed(link); | |
1555 | return r; | |
1556 | } | |
1557 | ||
b226d99b | 1558 | link_ref(link); |
52433f6b TG |
1559 | link->enslaving ++; |
1560 | } | |
1561 | ||
7951dea2 SS |
1562 | if (link->network->tunnel) { |
1563 | log_struct_link(LOG_DEBUG, link, | |
97578344 | 1564 | "MESSAGE=%-*s: enslaving by '%s'", |
987efa17 | 1565 | IFNAMSIZ, |
af4e9e2c | 1566 | link->ifname, link->network->tunnel->ifname, |
7951dea2 SS |
1567 | NETDEV(link->network->tunnel), |
1568 | NULL); | |
1569 | ||
1570 | r = netdev_enslave(link->network->tunnel, link, &enslave_handler); | |
1571 | if (r < 0) { | |
1572 | log_struct_link(LOG_WARNING, link, | |
97578344 | 1573 | "MESSAGE=%-*s: could not enslave by '%s': %s", |
987efa17 | 1574 | IFNAMSIZ, |
af4e9e2c | 1575 | link->ifname, link->network->tunnel->ifname, strerror(-r), |
7951dea2 SS |
1576 | NETDEV(link->network->tunnel), |
1577 | NULL); | |
1578 | link_enter_failed(link); | |
1579 | return r; | |
1580 | } | |
1581 | ||
1582 | link_ref(link); | |
1583 | link->enslaving ++; | |
1584 | } | |
1585 | ||
672682a6 | 1586 | HASHMAP_FOREACH(vlan, link->network->vlans, i) { |
52433f6b | 1587 | log_struct_link(LOG_DEBUG, link, |
97578344 | 1588 | "MESSAGE=%-*s: enslaving by '%s'", |
987efa17 | 1589 | IFNAMSIZ, |
af4e9e2c | 1590 | link->ifname, vlan->ifname, NETDEV(vlan), NULL); |
52433f6b | 1591 | |
672682a6 | 1592 | r = netdev_enslave(vlan, link, &enslave_handler); |
52433f6b TG |
1593 | if (r < 0) { |
1594 | log_struct_link(LOG_WARNING, link, | |
97578344 | 1595 | "MESSAGE=%-*s: could not enslave by '%s': %s", |
987efa17 | 1596 | IFNAMSIZ, |
af4e9e2c | 1597 | link->ifname, vlan->ifname, strerror(-r), |
672682a6 | 1598 | NETDEV(vlan), NULL); |
52433f6b TG |
1599 | link_enter_failed(link); |
1600 | return r; | |
1601 | } | |
1602 | ||
b226d99b | 1603 | link_ref(link); |
52433f6b | 1604 | link->enslaving ++; |
ef1ba606 TG |
1605 | } |
1606 | ||
fe6b2d55 TG |
1607 | HASHMAP_FOREACH(macvlan, link->network->macvlans, i) { |
1608 | log_struct_link(LOG_DEBUG, link, | |
97578344 | 1609 | "MESSAGE=%-*s: enslaving by '%s'", |
987efa17 | 1610 | IFNAMSIZ, |
af4e9e2c | 1611 | link->ifname, macvlan->ifname, NETDEV(macvlan), NULL); |
fe6b2d55 TG |
1612 | |
1613 | r = netdev_enslave(macvlan, link, &enslave_handler); | |
1614 | if (r < 0) { | |
1615 | log_struct_link(LOG_WARNING, link, | |
97578344 | 1616 | "MESSAGE=%-*s: could not enslave by '%s': %s", |
987efa17 | 1617 | IFNAMSIZ, |
af4e9e2c | 1618 | link->ifname, macvlan->ifname, strerror(-r), |
fe6b2d55 TG |
1619 | NETDEV(macvlan), NULL); |
1620 | link_enter_failed(link); | |
1621 | return r; | |
1622 | } | |
1623 | ||
b226d99b | 1624 | link_ref(link); |
fe6b2d55 TG |
1625 | link->enslaving ++; |
1626 | } | |
1627 | ||
ef1ba606 TG |
1628 | return 0; |
1629 | } | |
1630 | ||
a748b692 | 1631 | static int link_configure(Link *link) { |
02b59d57 TG |
1632 | int r; |
1633 | ||
ef1ba606 | 1634 | assert(link); |
505f8da7 | 1635 | assert(link->state == LINK_STATE_INITIALIZING); |
a748b692 | 1636 | |
eb34d4af | 1637 | if (link->network->ipv4ll) { |
b5db00e5 | 1638 | uint8_t seed[8]; |
45ad2c13 | 1639 | |
eb34d4af TG |
1640 | r = sd_ipv4ll_new(&link->ipv4ll); |
1641 | if (r < 0) | |
1642 | return r; | |
1643 | ||
505f8da7 TG |
1644 | if (link->udev_device) { |
1645 | r = net_get_unique_predictable_data(link->udev_device, seed); | |
1646 | if (r >= 0) { | |
1647 | r = sd_ipv4ll_set_address_seed(link->ipv4ll, seed); | |
1648 | if (r < 0) | |
1649 | return r; | |
1650 | } | |
b5db00e5 UTL |
1651 | } |
1652 | ||
eb34d4af TG |
1653 | r = sd_ipv4ll_attach_event(link->ipv4ll, NULL, 0); |
1654 | if (r < 0) | |
1655 | return r; | |
1656 | ||
4bb40e81 TG |
1657 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); |
1658 | if (r < 0) | |
1659 | return r; | |
1660 | ||
eb34d4af TG |
1661 | r = sd_ipv4ll_set_index(link->ipv4ll, link->ifindex); |
1662 | if (r < 0) | |
1663 | return r; | |
1664 | ||
1665 | r = sd_ipv4ll_set_callback(link->ipv4ll, ipv4ll_handler, link); | |
1666 | if (r < 0) | |
1667 | return r; | |
1668 | } | |
1669 | ||
1670 | if (link->network->dhcp) { | |
1671 | r = sd_dhcp_client_new(&link->dhcp_client); | |
1672 | if (r < 0) | |
1673 | return r; | |
1674 | ||
1675 | r = sd_dhcp_client_attach_event(link->dhcp_client, NULL, 0); | |
1676 | if (r < 0) | |
1677 | return r; | |
1678 | ||
4bb40e81 TG |
1679 | r = sd_dhcp_client_set_mac(link->dhcp_client, &link->mac); |
1680 | if (r < 0) | |
1681 | return r; | |
1682 | ||
eb34d4af TG |
1683 | r = sd_dhcp_client_set_index(link->dhcp_client, link->ifindex); |
1684 | if (r < 0) | |
1685 | return r; | |
1686 | ||
1687 | r = sd_dhcp_client_set_callback(link->dhcp_client, dhcp_handler, link); | |
1688 | if (r < 0) | |
1689 | return r; | |
1690 | ||
1691 | if (link->network->dhcp_mtu) { | |
1692 | r = sd_dhcp_client_set_request_option(link->dhcp_client, 26); | |
1693 | if (r < 0) | |
1694 | return r; | |
1695 | } | |
1696 | } | |
1697 | ||
dd43110f TG |
1698 | if (link->network->dhcp_server) { |
1699 | Address *address; | |
1700 | ||
1701 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); | |
1702 | if (r < 0) | |
1703 | return r; | |
1704 | ||
1705 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
1706 | if (r < 0) | |
1707 | return r; | |
1708 | ||
1709 | LIST_FOREACH(addresses, address, | |
1710 | link->network->static_addresses) { | |
1711 | struct in_addr pool_start; | |
1712 | ||
1713 | if (address->family != AF_INET) | |
1714 | continue; | |
1715 | ||
1716 | /* currently this is picked essentially at random */ | |
1717 | r = sd_dhcp_server_set_address(link->dhcp_server, | |
1718 | &address->in_addr.in); | |
1719 | if (r < 0) | |
1720 | return r; | |
1721 | ||
1722 | /* offer 32 addresses starting from the address following the server address */ | |
1723 | pool_start.s_addr = htobe32(be32toh(address->in_addr.in.s_addr) + 1); | |
1724 | r = sd_dhcp_server_set_lease_pool(link->dhcp_server, | |
1725 | &pool_start, 32); | |
1726 | ||
1727 | break; | |
1728 | } | |
1729 | ||
1730 | /* TODO: | |
1731 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
1732 | &main_address->in_addr.in); | |
1733 | if (r < 0) | |
1734 | return r; | |
1735 | ||
1736 | r = sd_dhcp_server_set_prefixlen(link->dhcp_server, | |
1737 | main_address->prefixlen); | |
1738 | if (r < 0) | |
1739 | return r; | |
1740 | */ | |
1741 | } | |
1742 | ||
1743 | if (link_has_carrier(link->flags, link->operstate)) { | |
1e9be60b TG |
1744 | r = link_acquire_conf(link); |
1745 | if (r < 0) | |
1746 | return r; | |
cc544d5f | 1747 | } |
1e9be60b | 1748 | |
505f8da7 TG |
1749 | return link_enter_enslave(link); |
1750 | } | |
1751 | ||
1752 | int link_initialized(Link *link, struct udev_device *device) { | |
1753 | Network *network; | |
505f8da7 TG |
1754 | int r; |
1755 | ||
1756 | assert(link); | |
1757 | assert(link->ifname); | |
1758 | assert(link->manager); | |
1759 | ||
1760 | if (link->state != LINK_STATE_INITIALIZING) | |
1761 | return 0; | |
1762 | ||
1763 | if (device) | |
1764 | link->udev_device = udev_device_ref(device); | |
1765 | ||
16cd414b | 1766 | log_debug_link(link, "udev initialized link"); |
505f8da7 TG |
1767 | |
1768 | r = network_get(link->manager, device, link->ifname, &link->mac, &network); | |
57bd6899 TG |
1769 | if (r == -ENOENT) { |
1770 | link_enter_unmanaged(link); | |
1771 | return 0; | |
1772 | } else if (r < 0) | |
1773 | return r; | |
505f8da7 TG |
1774 | |
1775 | r = network_apply(link->manager, network, link); | |
1776 | if (r < 0) | |
1777 | return r; | |
1778 | ||
a748b692 TG |
1779 | r = link_configure(link); |
1780 | if (r < 0) | |
1781 | return r; | |
1782 | ||
505f8da7 TG |
1783 | return 0; |
1784 | } | |
1785 | ||
fbbeb65a TG |
1786 | int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) { |
1787 | Manager *m = userdata; | |
1788 | Link *link = NULL; | |
1789 | uint16_t type; | |
1790 | _cleanup_address_free_ Address *address = NULL; | |
428fd0a7 | 1791 | Address *ad; |
fbbeb65a | 1792 | char buf[INET6_ADDRSTRLEN]; |
428fd0a7 | 1793 | bool address_dropped = false; |
fbbeb65a TG |
1794 | int r, ifindex; |
1795 | ||
1796 | assert(rtnl); | |
1797 | assert(message); | |
1798 | assert(m); | |
1799 | ||
1800 | r = sd_rtnl_message_get_type(message, &type); | |
1801 | if (r < 0) { | |
1802 | log_warning("rtnl: could not get message type"); | |
1803 | return 0; | |
1804 | } | |
1805 | ||
1806 | r = sd_rtnl_message_addr_get_ifindex(message, &ifindex); | |
1807 | if (r < 0 || ifindex <= 0) { | |
5ea846cc | 1808 | log_warning("rtnl: received address message without valid ifindex, ignoring"); |
fbbeb65a TG |
1809 | return 0; |
1810 | } else { | |
1811 | r = link_get(m, ifindex, &link); | |
1812 | if (r < 0 || !link) { | |
5ea846cc | 1813 | log_warning("rtnl: received address for a nonexistent link, ignoring"); |
fbbeb65a TG |
1814 | return 0; |
1815 | } | |
1816 | } | |
1817 | ||
1818 | r = address_new_dynamic(&address); | |
1819 | if (r < 0) | |
1820 | return 0; | |
1821 | ||
1822 | r = sd_rtnl_message_addr_get_family(message, &address->family); | |
1823 | if (r < 0 || !IN_SET(address->family, AF_INET, AF_INET6)) { | |
987efa17 | 1824 | log_warning_link(link, "rtnl: received address with invalid family, ignoring"); |
fbbeb65a TG |
1825 | return 0; |
1826 | } | |
1827 | ||
1828 | r = sd_rtnl_message_addr_get_prefixlen(message, &address->prefixlen); | |
1829 | if (r < 0) { | |
e375dcde TG |
1830 | log_warning_link(link, "rtnl: received address with invalid prefixlen, ignoring"); |
1831 | return 0; | |
1832 | } | |
1833 | ||
1834 | r = sd_rtnl_message_addr_get_scope(message, &address->scope); | |
1835 | if (r < 0) { | |
1836 | log_warning_link(link, "rtnl: received address with invalid scope, ignoring"); | |
fbbeb65a TG |
1837 | return 0; |
1838 | } | |
1839 | ||
1840 | switch (address->family) { | |
1841 | case AF_INET: | |
1842 | r = sd_rtnl_message_read_in_addr(message, IFA_LOCAL, &address->in_addr.in); | |
1843 | if (r < 0) { | |
987efa17 | 1844 | log_warning_link(link, "rtnl: received address without valid address, ignoring"); |
fbbeb65a TG |
1845 | return 0; |
1846 | } | |
1847 | ||
1848 | break; | |
1849 | ||
1850 | case AF_INET6: | |
1851 | r = sd_rtnl_message_read_in6_addr(message, IFA_ADDRESS, &address->in_addr.in6); | |
1852 | if (r < 0) { | |
987efa17 | 1853 | log_warning_link(link, "rtnl: received address without valid address, ignoring"); |
fbbeb65a TG |
1854 | return 0; |
1855 | } | |
1856 | ||
1857 | break; | |
1858 | ||
1859 | default: | |
1860 | assert_not_reached("invalid address family"); | |
1861 | } | |
1862 | ||
1863 | if (!inet_ntop(address->family, &address->in_addr, buf, INET6_ADDRSTRLEN)) { | |
987efa17 | 1864 | log_warning_link(link, "could not print address"); |
fbbeb65a TG |
1865 | return 0; |
1866 | } | |
1867 | ||
428fd0a7 TG |
1868 | LIST_FOREACH(addresses, ad, link->addresses) { |
1869 | if (address_equal(ad, address)) { | |
1870 | LIST_REMOVE(addresses, link->addresses, ad); | |
1871 | ||
1872 | address_free(ad); | |
1873 | ||
1874 | address_dropped = true; | |
1875 | ||
1876 | break; | |
1877 | } | |
1878 | } | |
1879 | ||
fbbeb65a TG |
1880 | switch (type) { |
1881 | case RTM_NEWADDR: | |
428fd0a7 TG |
1882 | if (!address_dropped) |
1883 | log_debug_link(link, "added address: %s/%u", buf, | |
1884 | address->prefixlen); | |
fbbeb65a | 1885 | |
428fd0a7 TG |
1886 | LIST_PREPEND(addresses, link->addresses, address); |
1887 | address = NULL; | |
1888 | ||
f5602be9 TG |
1889 | link_save(link); |
1890 | ||
428fd0a7 | 1891 | break; |
fbbeb65a | 1892 | case RTM_DELADDR: |
f5602be9 | 1893 | if (address_dropped) { |
428fd0a7 TG |
1894 | log_debug_link(link, "removed address: %s/%u", buf, |
1895 | address->prefixlen); | |
1896 | ||
f5602be9 TG |
1897 | link_save(link); |
1898 | } | |
1899 | ||
fbbeb65a TG |
1900 | break; |
1901 | default: | |
1902 | assert_not_reached("Received invalid RTNL message type"); | |
1903 | } | |
1904 | ||
1905 | return 1; | |
1906 | } | |
1907 | ||
1908 | static int link_get_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { | |
1909 | Link *link = userdata; | |
1910 | int r; | |
1911 | ||
1912 | assert(rtnl); | |
1913 | assert(m); | |
1914 | assert(link); | |
1915 | ||
1916 | for (; m; m = sd_rtnl_message_next(m)) { | |
1917 | r = sd_rtnl_message_get_errno(m); | |
1918 | if (r < 0) { | |
1919 | log_debug_link(link, "getting address failed: %s", strerror(-r)); | |
1920 | continue; | |
1921 | } | |
1922 | ||
1923 | r = link_rtnl_process_address(rtnl, m, link->manager); | |
1924 | if (r < 0) | |
1925 | log_warning_link(link, "could not process address: %s", strerror(-r)); | |
1926 | } | |
1927 | ||
1928 | return 1; | |
1929 | } | |
1930 | ||
505f8da7 TG |
1931 | int link_add(Manager *m, sd_rtnl_message *message, Link **ret) { |
1932 | Link *link; | |
fbbeb65a | 1933 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
505f8da7 TG |
1934 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; |
1935 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
1936 | int r; | |
1937 | ||
1938 | assert(m); | |
fbbeb65a | 1939 | assert(m->rtnl); |
505f8da7 TG |
1940 | assert(message); |
1941 | assert(ret); | |
1942 | ||
1943 | r = link_new(m, message, ret); | |
1944 | if (r < 0) | |
1945 | return r; | |
1946 | ||
1947 | link = *ret; | |
1948 | ||
5261692f | 1949 | log_debug_link(link, "link %"PRIu64" added", link->ifindex); |
505f8da7 | 1950 | |
fbbeb65a TG |
1951 | r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, link->ifindex, 0); |
1952 | if (r < 0) | |
1953 | return r; | |
1954 | ||
1955 | r = sd_rtnl_call_async(m->rtnl, req, link_get_address_handler, link, 0, NULL); | |
1956 | if (r < 0) | |
1957 | return r; | |
1958 | ||
505f8da7 TG |
1959 | if (detect_container(NULL) <= 0) { |
1960 | /* not in a container, udev will be around */ | |
1961 | sprintf(ifindex_str, "n%"PRIu64, link->ifindex); | |
1962 | device = udev_device_new_from_device_id(m->udev, ifindex_str); | |
1963 | if (!device) { | |
1964 | log_warning_link(link, "could not find udev device"); | |
1965 | return -errno; | |
1966 | } | |
1967 | ||
3c4cb064 | 1968 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 1969 | /* not yet ready */ |
16cd414b | 1970 | log_debug_link(link, "udev initializing link..."); |
505f8da7 | 1971 | return 0; |
3c4cb064 | 1972 | } |
505f8da7 TG |
1973 | } |
1974 | ||
1975 | r = link_initialized(link, device); | |
1976 | if (r < 0) | |
1977 | return r; | |
1978 | ||
a748b692 TG |
1979 | return 0; |
1980 | } | |
1981 | ||
22936833 | 1982 | int link_update(Link *link, sd_rtnl_message *m) { |
c49b33ac | 1983 | struct ether_addr mac; |
b8941f74 | 1984 | char *ifname; |
22936833 TG |
1985 | int r; |
1986 | ||
dd3efc09 | 1987 | assert(link); |
b8941f74 | 1988 | assert(link->ifname); |
22936833 TG |
1989 | assert(m); |
1990 | ||
7619683b TG |
1991 | if (link->state == LINK_STATE_LINGER) { |
1992 | link_ref(link); | |
1993 | log_info_link(link, "link readded"); | |
1994 | link->state = LINK_STATE_ENSLAVING; | |
1995 | } | |
1996 | ||
b8941f74 TG |
1997 | r = sd_rtnl_message_read_string(m, IFLA_IFNAME, &ifname); |
1998 | if (r >= 0 && !streq(ifname, link->ifname)) { | |
1999 | log_info_link(link, "renamed to %s", ifname); | |
2000 | ||
2001 | free(link->ifname); | |
2002 | link->ifname = strdup(ifname); | |
2003 | if (!link->ifname) | |
2004 | return -ENOMEM; | |
2005 | } | |
2006 | ||
505f8da7 | 2007 | if (!link->original_mtu) { |
9842de0d TG |
2008 | r = sd_rtnl_message_read_u16(m, IFLA_MTU, &link->original_mtu); |
2009 | if (r >= 0) | |
2010 | log_debug_link(link, "saved original MTU: %" | |
2011 | PRIu16, link->original_mtu); | |
2012 | } | |
69629de9 | 2013 | |
e9189a1f TG |
2014 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2015 | set, simply ignore them. */ | |
c49b33ac | 2016 | r = sd_rtnl_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 2017 | if (r >= 0) { |
20861203 | 2018 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN)) { |
c49b33ac | 2019 | |
20861203 | 2020 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN); |
c49b33ac | 2021 | |
20861203 TG |
2022 | log_debug_link(link, "MAC address: " |
2023 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", | |
2024 | mac.ether_addr_octet[0], | |
2025 | mac.ether_addr_octet[1], | |
2026 | mac.ether_addr_octet[2], | |
2027 | mac.ether_addr_octet[3], | |
2028 | mac.ether_addr_octet[4], | |
2029 | mac.ether_addr_octet[5]); | |
c49b33ac | 2030 | |
20861203 TG |
2031 | if (link->ipv4ll) { |
2032 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
2033 | if (r < 0) { | |
2034 | log_warning_link(link, "Could not update MAC " | |
2035 | "address in IPv4LL client: %s", | |
2036 | strerror(-r)); | |
2037 | return r; | |
2038 | } | |
c49b33ac | 2039 | } |
c49b33ac | 2040 | |
20861203 TG |
2041 | if (link->dhcp_client) { |
2042 | r = sd_dhcp_client_set_mac(link->dhcp_client, &link->mac); | |
2043 | if (r < 0) { | |
2044 | log_warning_link(link, "Could not update MAC " | |
2045 | "address in DHCP client: %s", | |
2046 | strerror(-r)); | |
2047 | return r; | |
2048 | } | |
c49b33ac TG |
2049 | } |
2050 | } | |
4f882b2a TG |
2051 | } |
2052 | ||
1e9be60b | 2053 | return link_update_flags(link, m); |
dd3efc09 | 2054 | } |
fe8db0c5 | 2055 | |
7374f9d8 TG |
2056 | static void serialize_addresses(FILE *f, const char *key, Address *address) { |
2057 | Address *ad; | |
2058 | ||
2059 | assert(f); | |
2060 | assert(key); | |
2061 | ||
2062 | if (!address) | |
2063 | return; | |
2064 | ||
2065 | fprintf(f, "%s=", key); | |
2066 | ||
2067 | LIST_FOREACH(addresses, ad, address) { | |
2068 | char buf[INET6_ADDRSTRLEN]; | |
2069 | ||
d408b506 | 2070 | if (inet_ntop(ad->family, &ad->in_addr, buf, INET6_ADDRSTRLEN)) |
7374f9d8 TG |
2071 | fprintf(f, "%s%s", buf, (ad->addresses_next) ? " ": ""); |
2072 | } | |
2073 | ||
2074 | fputs("\n", f); | |
2075 | } | |
2076 | ||
e375dcde TG |
2077 | static void link_update_operstate(Link *link) { |
2078 | ||
2079 | assert(link); | |
2080 | ||
2081 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
2082 | link->operstate = LINK_OPERSTATE_DORMANT; | |
2083 | else if (link_has_carrier(link->flags, link->kernel_operstate)) { | |
2084 | Address *address; | |
2085 | uint8_t scope = RT_SCOPE_NOWHERE; | |
2086 | ||
2087 | /* if we have carrier, check what addresses we have */ | |
2088 | LIST_FOREACH(addresses, address, link->addresses) { | |
2089 | if (address->scope < scope) | |
2090 | scope = address->scope; | |
2091 | } | |
2092 | ||
2093 | if (scope < RT_SCOPE_SITE) | |
2094 | /* universally accessible addresses found */ | |
2095 | link->operstate = LINK_OPERSTATE_ROUTABLE; | |
2096 | else if (scope < RT_SCOPE_HOST) | |
2097 | /* only link or site local addresses found */ | |
2098 | link->operstate = LINK_OPERSTATE_DEGRADED; | |
2099 | else | |
2100 | /* no useful addresses found */ | |
2101 | link->operstate = LINK_OPERSTATE_CARRIER; | |
2102 | } else | |
2103 | link->operstate = LINK_OPERSTATE_UNKNOWN; | |
2104 | } | |
2105 | ||
fe8db0c5 | 2106 | int link_save(Link *link) { |
68a8723c | 2107 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 2108 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 2109 | const char *admin_state, *oper_state; |
fe8db0c5 TG |
2110 | int r; |
2111 | ||
2112 | assert(link); | |
2113 | assert(link->state_file); | |
68a8723c | 2114 | assert(link->lease_file); |
bbf7c048 TG |
2115 | assert(link->manager); |
2116 | ||
e375dcde TG |
2117 | link_update_operstate(link); |
2118 | ||
bbf7c048 TG |
2119 | r = manager_save(link->manager); |
2120 | if (r < 0) | |
2121 | return r; | |
fe8db0c5 | 2122 | |
370e9930 TG |
2123 | if (link->state == LINK_STATE_LINGER) { |
2124 | unlink(link->state_file); | |
2125 | return 0; | |
2126 | } | |
2127 | ||
deb2e523 TG |
2128 | admin_state = link_state_to_string(link->state); |
2129 | assert(admin_state); | |
2130 | ||
e375dcde TG |
2131 | oper_state = link_operstate_to_string(link->operstate); |
2132 | assert(oper_state); | |
deb2e523 | 2133 | |
fe8db0c5 TG |
2134 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2135 | if (r < 0) | |
2136 | goto finish; | |
2137 | ||
2138 | fchmod(fileno(f), 0644); | |
2139 | ||
2140 | fprintf(f, | |
2141 | "# This is private data. Do not parse.\n" | |
deb2e523 TG |
2142 | "ADMIN_STATE=%s\n" |
2143 | "OPER_STATE=%s\n" | |
2144 | "FLAGS=%u\n", | |
2145 | admin_state, oper_state, link->flags); | |
fe8db0c5 | 2146 | |
bcb7a07e | 2147 | if (link->network) { |
7374f9d8 | 2148 | serialize_addresses(f, "DNS", link->network->dns); |
bcb7a07e TG |
2149 | serialize_addresses(f, "NTP", link->network->ntp); |
2150 | } | |
7374f9d8 | 2151 | |
fe8db0c5 | 2152 | if (link->dhcp_lease) { |
68a8723c | 2153 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 TG |
2154 | if (r < 0) |
2155 | goto finish; | |
2156 | ||
7374f9d8 TG |
2157 | fprintf(f, |
2158 | "DHCP_LEASE=%s\n" | |
bcb7a07e TG |
2159 | "DHCP_USE_DNS=%s\n" |
2160 | "DHCP_USE_NTP=%s\n", | |
2161 | link->lease_file, | |
2162 | yes_no(link->network->dhcp_dns), | |
2163 | yes_no(link->network->dhcp_ntp)); | |
deb2e523 | 2164 | } else |
68a8723c | 2165 | unlink(link->lease_file); |
fe8db0c5 TG |
2166 | |
2167 | fflush(f); | |
2168 | ||
2169 | if (ferror(f) || rename(temp_path, link->state_file) < 0) { | |
2170 | r = -errno; | |
2171 | unlink(link->state_file); | |
2172 | unlink(temp_path); | |
2173 | } | |
2174 | ||
2175 | finish: | |
2176 | if (r < 0) | |
987efa17 | 2177 | log_error_link(link, "Failed to save link data to %s: %s", link->state_file, strerror(-r)); |
fe8db0c5 TG |
2178 | |
2179 | return r; | |
2180 | } | |
2181 | ||
2182 | static const char* const link_state_table[_LINK_STATE_MAX] = { | |
deb2e523 | 2183 | [LINK_STATE_INITIALIZING] = "initializing", |
fe8db0c5 TG |
2184 | [LINK_STATE_ENSLAVING] = "configuring", |
2185 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
2186 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
2187 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 2188 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2189 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2190 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2191 | }; |
2192 | ||
2193 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
2194 | |
2195 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
2196 | [LINK_OPERSTATE_UNKNOWN] = "unknown", | |
2197 | [LINK_OPERSTATE_DORMANT] = "dormant", | |
2198 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
2199 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
2200 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
2201 | }; | |
2202 | ||
2203 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |