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f579559b TG |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
20 | #include <netinet/ether.h> | |
21 | #include <linux/if.h> | |
4cc7a82c | 22 | #include <unistd.h> |
f579559b | 23 | |
b5efdb8a | 24 | #include "alloc-util.h" |
1346b1f0 | 25 | #include "bus-util.h" |
bd91b83e | 26 | #include "dhcp-lease-internal.h" |
3ffd4af2 | 27 | #include "fd-util.h" |
cf1d700d TG |
28 | #include "fileio.h" |
29 | #include "netlink-util.h" | |
c6f7c917 | 30 | #include "network-internal.h" |
a0e5c15d | 31 | #include "networkd-ipv6-proxy-ndp.h" |
8e1ad1ea | 32 | #include "networkd-lldp-tx.h" |
23f53b99 | 33 | #include "networkd-manager.h" |
1e7a0e21 | 34 | #include "networkd-ndisc.h" |
cf1d700d TG |
35 | #include "set.h" |
36 | #include "socket-util.h" | |
15a5e950 | 37 | #include "stdio-util.h" |
8b43440b | 38 | #include "string-table.h" |
cf1d700d TG |
39 | #include "udev-util.h" |
40 | #include "util.h" | |
41 | #include "virt.h" | |
fc2f9534 | 42 | |
b9d74c40 LP |
43 | static bool link_dhcp6_enabled(Link *link) { |
44 | assert(link); | |
45 | ||
fa709992 LP |
46 | if (!socket_ipv6_is_supported()) |
47 | return false; | |
48 | ||
78c958f8 TG |
49 | if (link->flags & IFF_LOOPBACK) |
50 | return false; | |
51 | ||
52 | if (!link->network) | |
53 | return false; | |
54 | ||
e0ee46f2 | 55 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
56 | } |
57 | ||
b9d74c40 LP |
58 | static bool link_dhcp4_enabled(Link *link) { |
59 | assert(link); | |
60 | ||
78c958f8 TG |
61 | if (link->flags & IFF_LOOPBACK) |
62 | return false; | |
63 | ||
64 | if (!link->network) | |
65 | return false; | |
66 | ||
e0ee46f2 | 67 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
68 | } |
69 | ||
b9d74c40 LP |
70 | static bool link_dhcp4_server_enabled(Link *link) { |
71 | assert(link); | |
72 | ||
78c958f8 TG |
73 | if (link->flags & IFF_LOOPBACK) |
74 | return false; | |
75 | ||
76 | if (!link->network) | |
77 | return false; | |
78 | ||
79 | return link->network->dhcp_server; | |
80 | } | |
81 | ||
b9d74c40 LP |
82 | static bool link_ipv4ll_enabled(Link *link) { |
83 | assert(link); | |
84 | ||
78c958f8 TG |
85 | if (link->flags & IFF_LOOPBACK) |
86 | return false; | |
87 | ||
88 | if (!link->network) | |
89 | return false; | |
90 | ||
e0ee46f2 | 91 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
92 | } |
93 | ||
b9d74c40 LP |
94 | static bool link_ipv6ll_enabled(Link *link) { |
95 | assert(link); | |
96 | ||
fa709992 LP |
97 | if (!socket_ipv6_is_supported()) |
98 | return false; | |
99 | ||
d0d6a4cd TG |
100 | if (link->flags & IFF_LOOPBACK) |
101 | return false; | |
102 | ||
103 | if (!link->network) | |
104 | return false; | |
105 | ||
e0ee46f2 | 106 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
107 | } |
108 | ||
439689c6 SS |
109 | static bool link_ipv6_enabled(Link *link) { |
110 | assert(link); | |
111 | ||
112 | if (!socket_ipv6_is_supported()) | |
113 | return false; | |
114 | ||
2b00a4e0 TY |
115 | if (link->network->bridge) |
116 | return false; | |
117 | ||
4cef7fe3 TY |
118 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
119 | return link_ipv6ll_enabled(link) || network_has_static_ipv6_addresses(link->network); | |
439689c6 SS |
120 | } |
121 | ||
8e1ad1ea | 122 | static bool link_lldp_rx_enabled(Link *link) { |
b710e6b6 LP |
123 | assert(link); |
124 | ||
ce43e484 SS |
125 | if (link->flags & IFF_LOOPBACK) |
126 | return false; | |
127 | ||
b710e6b6 LP |
128 | if (link->iftype != ARPHRD_ETHER) |
129 | return false; | |
130 | ||
ce43e484 SS |
131 | if (!link->network) |
132 | return false; | |
133 | ||
5a8bcb67 | 134 | if (link->network->bridge) |
ce43e484 SS |
135 | return false; |
136 | ||
34437b4f | 137 | return link->network->lldp_mode != LLDP_MODE_NO; |
ce43e484 SS |
138 | } |
139 | ||
7272b25e | 140 | static bool link_lldp_emit_enabled(Link *link) { |
8e1ad1ea LP |
141 | assert(link); |
142 | ||
143 | if (link->flags & IFF_LOOPBACK) | |
144 | return false; | |
145 | ||
146 | if (link->iftype != ARPHRD_ETHER) | |
147 | return false; | |
148 | ||
149 | if (!link->network) | |
150 | return false; | |
151 | ||
7272b25e | 152 | return link->network->lldp_emit != LLDP_EMIT_NO; |
8e1ad1ea LP |
153 | } |
154 | ||
769d324c | 155 | static bool link_ipv4_forward_enabled(Link *link) { |
b9d74c40 LP |
156 | assert(link); |
157 | ||
5a8bcb67 LP |
158 | if (link->flags & IFF_LOOPBACK) |
159 | return false; | |
160 | ||
161 | if (!link->network) | |
162 | return false; | |
163 | ||
765afd5c LP |
164 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
165 | return false; | |
166 | ||
e0ee46f2 | 167 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
168 | } |
169 | ||
170 | static bool link_ipv6_forward_enabled(Link *link) { | |
b9d74c40 | 171 | assert(link); |
765afd5c LP |
172 | |
173 | if (!socket_ipv6_is_supported()) | |
174 | return false; | |
175 | ||
769d324c LP |
176 | if (link->flags & IFF_LOOPBACK) |
177 | return false; | |
178 | ||
179 | if (!link->network) | |
180 | return false; | |
181 | ||
765afd5c LP |
182 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
183 | return false; | |
184 | ||
e0ee46f2 | 185 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
186 | } |
187 | ||
23d8b221 SS |
188 | static bool link_proxy_arp_enabled(Link *link) { |
189 | assert(link); | |
190 | ||
191 | if (link->flags & IFF_LOOPBACK) | |
192 | return false; | |
193 | ||
194 | if (!link->network) | |
195 | return false; | |
196 | ||
197 | if (link->network->proxy_arp < 0) | |
198 | return false; | |
199 | ||
200 | return true; | |
201 | } | |
202 | ||
b9d74c40 LP |
203 | static bool link_ipv6_accept_ra_enabled(Link *link) { |
204 | assert(link); | |
205 | ||
fa709992 LP |
206 | if (!socket_ipv6_is_supported()) |
207 | return false; | |
208 | ||
f5a8c43f TG |
209 | if (link->flags & IFF_LOOPBACK) |
210 | return false; | |
211 | ||
212 | if (!link->network) | |
213 | return false; | |
214 | ||
215 | /* If unset use system default (enabled if local forwarding is disabled. | |
216 | * disabled if local forwarding is enabled). | |
217 | * If set, ignore or enforce RA independent of local forwarding state. | |
218 | */ | |
219 | if (link->network->ipv6_accept_ra < 0) | |
220 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ | |
221 | return !link_ipv6_forward_enabled(link); | |
222 | else if (link->network->ipv6_accept_ra > 0) | |
223 | /* accept RA even if ip_forward is enabled */ | |
224 | return true; | |
225 | else | |
226 | /* ignore RA */ | |
227 | return false; | |
228 | } | |
229 | ||
1f0d9695 | 230 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
fa709992 | 231 | assert(link); |
d68e2e59 LP |
232 | |
233 | if (!socket_ipv6_is_supported()) | |
234 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; | |
235 | ||
49092e22 | 236 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 237 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
238 | |
239 | if (!link->network) | |
1f0d9695 | 240 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
241 | |
242 | return link->network->ipv6_privacy_extensions; | |
243 | } | |
244 | ||
439689c6 SS |
245 | static int link_enable_ipv6(Link *link) { |
246 | const char *p = NULL; | |
247 | bool disabled; | |
248 | int r; | |
249 | ||
250 | if (link->flags & IFF_LOOPBACK) | |
251 | return 0; | |
252 | ||
253 | disabled = !link_ipv6_enabled(link); | |
254 | ||
255 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/disable_ipv6"); | |
256 | ||
257 | r = write_string_file(p, one_zero(disabled), WRITE_STRING_FILE_VERIFY_ON_FAILURE); | |
258 | if (r < 0) | |
b106c586 ZJS |
259 | log_link_warning_errno(link, r, "Cannot %s IPv6 for interface %s: %m", |
260 | enable_disable(!disabled), link->ifname); | |
2d37cd53 | 261 | else |
b106c586 | 262 | log_link_info(link, "IPv6 successfully %sd", enable_disable(!disabled)); |
439689c6 SS |
263 | |
264 | return 0; | |
265 | } | |
266 | ||
84de38c5 TG |
267 | void link_update_operstate(Link *link) { |
268 | LinkOperationalState operstate; | |
269 | assert(link); | |
270 | ||
271 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
272 | operstate = LINK_OPERSTATE_DORMANT; | |
273 | else if (link_has_carrier(link)) { | |
274 | Address *address; | |
275 | uint8_t scope = RT_SCOPE_NOWHERE; | |
276 | Iterator i; | |
277 | ||
278 | /* if we have carrier, check what addresses we have */ | |
279 | SET_FOREACH(address, link->addresses, i) { | |
280 | if (!address_is_ready(address)) | |
281 | continue; | |
282 | ||
283 | if (address->scope < scope) | |
284 | scope = address->scope; | |
285 | } | |
286 | ||
287 | /* for operstate we also take foreign addresses into account */ | |
288 | SET_FOREACH(address, link->addresses_foreign, i) { | |
289 | if (!address_is_ready(address)) | |
290 | continue; | |
291 | ||
292 | if (address->scope < scope) | |
293 | scope = address->scope; | |
294 | } | |
295 | ||
296 | if (scope < RT_SCOPE_SITE) | |
297 | /* universally accessible addresses found */ | |
298 | operstate = LINK_OPERSTATE_ROUTABLE; | |
299 | else if (scope < RT_SCOPE_HOST) | |
300 | /* only link or site local addresses found */ | |
301 | operstate = LINK_OPERSTATE_DEGRADED; | |
302 | else | |
303 | /* no useful addresses found */ | |
304 | operstate = LINK_OPERSTATE_CARRIER; | |
305 | } else if (link->flags & IFF_UP) | |
306 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
307 | else | |
308 | operstate = LINK_OPERSTATE_OFF; | |
309 | ||
310 | if (link->operstate != operstate) { | |
311 | link->operstate = operstate; | |
312 | link_send_changed(link, "OperationalState", NULL); | |
313 | link_dirty(link); | |
84de38c5 TG |
314 | } |
315 | } | |
316 | ||
51d18171 TG |
317 | #define FLAG_STRING(string, flag, old, new) \ |
318 | (((old ^ new) & flag) \ | |
319 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
320 | : "") | |
321 | ||
1c4baffc | 322 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
323 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
324 | uint8_t operstate; | |
325 | int r; | |
326 | ||
327 | assert(link); | |
328 | ||
329 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
330 | if (r < 0) |
331 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 332 | |
1c4baffc | 333 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
334 | if (r < 0) |
335 | /* if we got a message without operstate, take it to mean | |
336 | the state was unchanged */ | |
337 | operstate = link->kernel_operstate; | |
338 | ||
339 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
340 | return 0; | |
341 | ||
342 | if (link->flags != flags) { | |
6a7a4e4d | 343 | 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 |
344 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
345 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
346 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
347 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
348 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
349 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
350 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
351 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
352 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
353 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
354 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
355 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
356 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
357 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
358 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
359 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
360 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
361 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
362 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
363 | ||
364 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
365 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
366 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
367 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
368 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
369 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
370 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
371 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
372 | ||
373 | /* link flags are currently at most 18 bits, let's align to | |
374 | * printing 20 */ | |
375 | if (unknown_flags_added) | |
79008bdd | 376 | log_link_debug(link, |
6a7a4e4d | 377 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
378 | unknown_flags_added); |
379 | ||
380 | if (unknown_flags_removed) | |
79008bdd | 381 | log_link_debug(link, |
6a7a4e4d | 382 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
383 | unknown_flags_removed); |
384 | } | |
385 | ||
386 | link->flags = flags; | |
387 | link->kernel_operstate = operstate; | |
388 | ||
84de38c5 | 389 | link_update_operstate(link); |
51d18171 TG |
390 | |
391 | return 0; | |
392 | } | |
393 | ||
1c4baffc | 394 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
14b746f7 | 395 | _cleanup_link_unref_ Link *link = NULL; |
505f8da7 | 396 | uint16_t type; |
6cad256d | 397 | const char *ifname, *kind = NULL; |
505f8da7 | 398 | int r, ifindex; |
b710e6b6 | 399 | unsigned short iftype; |
f579559b | 400 | |
0c2f9b84 | 401 | assert(manager); |
505f8da7 | 402 | assert(message); |
f579559b TG |
403 | assert(ret); |
404 | ||
6cad256d TJ |
405 | /* check for link kind */ |
406 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
407 | if (r == 0) { | |
408 | (void)sd_netlink_message_read_string(message, IFLA_INFO_KIND, &kind); | |
409 | r = sd_netlink_message_exit_container(message); | |
410 | if (r < 0) | |
411 | return r; | |
412 | } | |
413 | ||
1c4baffc | 414 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
415 | if (r < 0) |
416 | return r; | |
417 | else if (type != RTM_NEWLINK) | |
418 | return -EINVAL; | |
419 | ||
420 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
421 | if (r < 0) | |
422 | return r; | |
423 | else if (ifindex <= 0) | |
424 | return -EINVAL; | |
425 | ||
b710e6b6 LP |
426 | r = sd_rtnl_message_link_get_type(message, &iftype); |
427 | if (r < 0) | |
428 | return r; | |
429 | ||
1c4baffc | 430 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
431 | if (r < 0) |
432 | return r; | |
433 | ||
f579559b TG |
434 | link = new0(Link, 1); |
435 | if (!link) | |
436 | return -ENOMEM; | |
437 | ||
14b746f7 | 438 | link->n_ref = 1; |
5a3eb5a7 | 439 | link->manager = manager; |
8434fd5c | 440 | link->state = LINK_STATE_PENDING; |
be3a09b7 | 441 | link->rtnl_extended_attrs = true; |
505f8da7 | 442 | link->ifindex = ifindex; |
b710e6b6 | 443 | link->iftype = iftype; |
505f8da7 TG |
444 | link->ifname = strdup(ifname); |
445 | if (!link->ifname) | |
446 | return -ENOMEM; | |
f579559b | 447 | |
6cad256d TJ |
448 | if (kind) { |
449 | link->kind = strdup(kind); | |
450 | if (!link->kind) | |
451 | return -ENOMEM; | |
452 | } | |
453 | ||
1c4baffc | 454 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 455 | if (r < 0) |
34437b4f | 456 | log_link_debug_errno(link, r, "MAC address not found for new device, continuing without"); |
512922f8 | 457 | |
34437b4f | 458 | if (asprintf(&link->state_file, "/run/systemd/netif/links/%d", link->ifindex) < 0) |
315db1a8 | 459 | return -ENOMEM; |
fe8db0c5 | 460 | |
34437b4f | 461 | if (asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", link->ifindex) < 0) |
68a8723c TG |
462 | return -ENOMEM; |
463 | ||
34437b4f | 464 | if (asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", link->ifindex) < 0) |
49699bac SS |
465 | return -ENOMEM; |
466 | ||
d5099efc | 467 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
468 | if (r < 0) |
469 | return r; | |
470 | ||
471 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
472 | if (r < 0) |
473 | return r; | |
474 | ||
51d18171 TG |
475 | r = link_update_flags(link, message); |
476 | if (r < 0) | |
477 | return r; | |
478 | ||
f579559b TG |
479 | *ret = link; |
480 | link = NULL; | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
14b746f7 | 485 | static void link_free(Link *link) { |
428fd0a7 | 486 | Address *address; |
0d4ad91d AR |
487 | Iterator i; |
488 | Link *carrier; | |
428fd0a7 | 489 | |
f579559b TG |
490 | if (!link) |
491 | return; | |
492 | ||
cf1d700d TG |
493 | while (!set_isempty(link->addresses)) |
494 | address_free(set_first(link->addresses)); | |
495 | ||
adda1ed9 TG |
496 | while (!set_isempty(link->addresses_foreign)) |
497 | address_free(set_first(link->addresses_foreign)); | |
498 | ||
4701725c HV |
499 | link->addresses = set_free(link->addresses); |
500 | ||
501 | link->addresses_foreign = set_free(link->addresses_foreign); | |
adda1ed9 | 502 | |
11bf3cce LP |
503 | while ((address = link->pool_addresses)) { |
504 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
505 | address_free(address); | |
506 | } | |
507 | ||
bfcdba8d | 508 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 509 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 510 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 511 | |
7272b25e | 512 | link_lldp_emit_stop(link); |
8e1ad1ea | 513 | |
68a8723c TG |
514 | free(link->lease_file); |
515 | ||
4afd3348 | 516 | sd_lldp_unref(link->lldp); |
49699bac SS |
517 | free(link->lldp_file); |
518 | ||
c69305ff LP |
519 | ndisc_flush(link); |
520 | ||
56cd007a | 521 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 522 | sd_dhcp6_client_unref(link->dhcp6_client); |
1e7a0e21 LP |
523 | sd_ndisc_unref(link->ndisc); |
524 | ||
28aeb07f | 525 | if (link->manager) |
ae06ab10 | 526 | hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); |
f579559b | 527 | |
c166a070 | 528 | free(link->ifname); |
68a8723c | 529 | |
ceac4078 | 530 | free(link->kind); |
6cad256d | 531 | |
84de38c5 | 532 | (void)unlink(link->state_file); |
fe8db0c5 | 533 | free(link->state_file); |
c166a070 | 534 | |
b5db00e5 UTL |
535 | udev_device_unref(link->udev_device); |
536 | ||
0d4ad91d AR |
537 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
538 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
539 | hashmap_free(link->bound_to_links); | |
540 | ||
541 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
542 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
543 | hashmap_free(link->bound_by_links); | |
544 | ||
f579559b TG |
545 | free(link); |
546 | } | |
547 | ||
14b746f7 | 548 | Link *link_unref(Link *link) { |
957325b7 TG |
549 | if (!link) |
550 | return NULL; | |
551 | ||
552 | assert(link->n_ref > 0); | |
553 | ||
313cefa1 | 554 | link->n_ref--; |
957325b7 TG |
555 | |
556 | if (link->n_ref > 0) | |
557 | return NULL; | |
558 | ||
559 | link_free(link); | |
14b746f7 TG |
560 | |
561 | return NULL; | |
562 | } | |
563 | ||
564 | Link *link_ref(Link *link) { | |
957325b7 TG |
565 | if (!link) |
566 | return NULL; | |
567 | ||
568 | assert(link->n_ref > 0); | |
569 | ||
313cefa1 | 570 | link->n_ref++; |
14b746f7 TG |
571 | |
572 | return link; | |
573 | } | |
574 | ||
11a7f229 TG |
575 | int link_get(Manager *m, int ifindex, Link **ret) { |
576 | Link *link; | |
11a7f229 TG |
577 | |
578 | assert(m); | |
11a7f229 TG |
579 | assert(ifindex); |
580 | assert(ret); | |
581 | ||
ae06ab10 | 582 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
583 | if (!link) |
584 | return -ENODEV; | |
585 | ||
586 | *ret = link; | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
e331e246 TG |
591 | static void link_set_state(Link *link, LinkState state) { |
592 | assert(link); | |
593 | ||
594 | if (link->state == state) | |
595 | return; | |
596 | ||
597 | link->state = state; | |
598 | ||
599 | link_send_changed(link, "AdministrativeState", NULL); | |
e331e246 TG |
600 | } |
601 | ||
57bd6899 TG |
602 | static void link_enter_unmanaged(Link *link) { |
603 | assert(link); | |
604 | ||
6a7a4e4d | 605 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 606 | |
e331e246 | 607 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 608 | |
84de38c5 | 609 | link_dirty(link); |
57bd6899 TG |
610 | } |
611 | ||
111bb8f9 TG |
612 | static int link_stop_clients(Link *link) { |
613 | int r = 0, k; | |
614 | ||
615 | assert(link); | |
616 | assert(link->manager); | |
617 | assert(link->manager->event); | |
618 | ||
ba179154 | 619 | if (link->dhcp_client) { |
111bb8f9 | 620 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 621 | if (k < 0) |
36c7d709 | 622 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
623 | } |
624 | ||
ba179154 | 625 | if (link->ipv4ll) { |
111bb8f9 | 626 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d | 627 | if (k < 0) |
36c7d709 | 628 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); |
dd43110f TG |
629 | } |
630 | ||
f5a8c43f TG |
631 | if (link->dhcp6_client) { |
632 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
633 | if (k < 0) | |
36c7d709 | 634 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); |
f5a8c43f | 635 | } |
4138fb2c | 636 | |
1e7a0e21 LP |
637 | if (link->ndisc) { |
638 | k = sd_ndisc_stop(link->ndisc); | |
6a7a4e4d | 639 | if (k < 0) |
36c7d709 | 640 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
641 | } |
642 | ||
7272b25e | 643 | link_lldp_emit_stop(link); |
111bb8f9 TG |
644 | return r; |
645 | } | |
646 | ||
b22d8a00 | 647 | void link_enter_failed(Link *link) { |
ef1ba606 | 648 | assert(link); |
f882c247 | 649 | |
370e9930 | 650 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
651 | return; |
652 | ||
6a7a4e4d | 653 | log_link_warning(link, "Failed"); |
449f7554 | 654 | |
e331e246 | 655 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 656 | |
111bb8f9 TG |
657 | link_stop_clients(link); |
658 | ||
84de38c5 | 659 | link_dirty(link); |
f882c247 TG |
660 | } |
661 | ||
4f434938 LP |
662 | static Address* link_find_dhcp_server_address(Link *link) { |
663 | Address *address; | |
664 | ||
665 | assert(link); | |
666 | assert(link->network); | |
667 | ||
d4cdbea5 | 668 | /* The first statically configured address if there is any */ |
4f434938 LP |
669 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
670 | ||
671 | if (address->family != AF_INET) | |
672 | continue; | |
673 | ||
af93291c | 674 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
675 | continue; |
676 | ||
677 | return address; | |
678 | } | |
679 | ||
680 | /* If that didn't work, find a suitable address we got from the pool */ | |
681 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
682 | if (address->family != AF_INET) | |
683 | continue; | |
684 | ||
685 | return address; | |
686 | } | |
687 | ||
688 | return NULL; | |
689 | } | |
690 | ||
e3a7b048 | 691 | static void link_enter_configured(Link *link) { |
dd43110f TG |
692 | assert(link); |
693 | assert(link->network); | |
e3a7b048 SS |
694 | |
695 | if (link->state != LINK_STATE_SETTING_ROUTES) | |
696 | return; | |
dd43110f | 697 | |
6a7a4e4d | 698 | log_link_info(link, "Configured"); |
dd43110f | 699 | |
e331e246 | 700 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 701 | |
84de38c5 | 702 | link_dirty(link); |
dd43110f TG |
703 | } |
704 | ||
8012cd39 TG |
705 | void link_check_ready(Link *link) { |
706 | Address *a; | |
707 | Iterator i; | |
708 | ||
3c9b8860 | 709 | assert(link); |
adda1ed9 | 710 | |
7209086d SS |
711 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
712 | return; | |
713 | ||
adda1ed9 TG |
714 | if (!link->network) |
715 | return; | |
3c9b8860 TG |
716 | |
717 | if (!link->static_configured) | |
718 | return; | |
719 | ||
78c958f8 | 720 | if (link_ipv4ll_enabled(link)) |
3c9b8860 TG |
721 | if (!link->ipv4ll_address || |
722 | !link->ipv4ll_route) | |
723 | return; | |
724 | ||
e7ab854c | 725 | if (link_ipv6ll_enabled(link)) |
c601ebf7 | 726 | if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) > 0) |
e7ab854c TG |
727 | return; |
728 | ||
3ada37a2 PF |
729 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
730 | !link->dhcp4_configured) || | |
731 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
732 | !link->dhcp6_configured) || | |
733 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
734 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
18d29550 PF |
735 | return; |
736 | ||
fe307276 TG |
737 | if (link_ipv6_accept_ra_enabled(link) && !link->ndisc_configured) |
738 | return; | |
739 | ||
8012cd39 TG |
740 | SET_FOREACH(a, link->addresses, i) |
741 | if (!address_is_ready(a)) | |
742 | return; | |
743 | ||
9fdaa992 TG |
744 | if (link->state != LINK_STATE_CONFIGURED) |
745 | link_enter_configured(link); | |
3c9b8860 TG |
746 | |
747 | return; | |
748 | } | |
749 | ||
1c4baffc | 750 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 751 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
752 | int r; |
753 | ||
3c9b8860 | 754 | assert(link->link_messages > 0); |
370e9930 TG |
755 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
756 | LINK_STATE_SETTING_ROUTES, LINK_STATE_FAILED, | |
757 | LINK_STATE_LINGER)); | |
f882c247 | 758 | |
313cefa1 | 759 | link->link_messages--; |
f882c247 | 760 | |
77a008c0 | 761 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
762 | return 1; |
763 | ||
1c4baffc | 764 | r = sd_netlink_message_get_errno(m); |
c166a070 | 765 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 766 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 767 | |
3c9b8860 | 768 | if (link->link_messages == 0) { |
6a7a4e4d | 769 | log_link_debug(link, "Routes set"); |
3c9b8860 | 770 | link->static_configured = true; |
8012cd39 | 771 | link_check_ready(link); |
dd3efc09 | 772 | } |
f882c247 TG |
773 | |
774 | return 1; | |
775 | } | |
776 | ||
777 | static int link_enter_set_routes(Link *link) { | |
a6cc569e | 778 | Route *rt; |
f882c247 TG |
779 | int r; |
780 | ||
781 | assert(link); | |
782 | assert(link->network); | |
ef1ba606 | 783 | assert(link->state == LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 784 | |
e331e246 | 785 | link_set_state(link, LINK_STATE_SETTING_ROUTES); |
f882c247 | 786 | |
3d3d4255 | 787 | LIST_FOREACH(routes, rt, link->network->static_routes) { |
483d099e | 788 | r = route_configure(rt, link, route_handler); |
dd3efc09 | 789 | if (r < 0) { |
6a7a4e4d | 790 | log_link_warning_errno(link, r, "Could not set routes: %m"); |
3c9b8860 | 791 | link_enter_failed(link); |
a6cc569e TG |
792 | return r; |
793 | } | |
794 | ||
313cefa1 | 795 | link->link_messages++; |
8ddbeaa2 | 796 | } |
f5be5601 | 797 | |
3c9b8860 TG |
798 | if (link->link_messages == 0) { |
799 | link->static_configured = true; | |
8012cd39 | 800 | link_check_ready(link); |
431ca2ce | 801 | } else |
6a7a4e4d | 802 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
803 | |
804 | return 0; | |
805 | } | |
806 | ||
91b5f997 | 807 | int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 808 | _cleanup_link_unref_ Link *link = userdata; |
5c1d3fc9 UTL |
809 | int r; |
810 | ||
811 | assert(m); | |
812 | assert(link); | |
813 | assert(link->ifname); | |
814 | ||
5da8149f | 815 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
5c1d3fc9 UTL |
816 | return 1; |
817 | ||
1c4baffc | 818 | r = sd_netlink_message_get_errno(m); |
b90b025a | 819 | if (r < 0 && r != -ESRCH) |
a2fae7bb | 820 | log_link_warning_errno(link, r, "Could not drop route: %m"); |
5c1d3fc9 | 821 | |
5bdd314c | 822 | return 1; |
5c1d3fc9 UTL |
823 | } |
824 | ||
1c4baffc | 825 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 826 | _cleanup_link_unref_ Link *link = userdata; |
f882c247 TG |
827 | int r; |
828 | ||
4958aee4 | 829 | assert(rtnl); |
f5be5601 TG |
830 | assert(m); |
831 | assert(link); | |
832 | assert(link->ifname); | |
3c9b8860 | 833 | assert(link->link_messages > 0); |
370e9930 TG |
834 | assert(IN_SET(link->state, LINK_STATE_SETTING_ADDRESSES, |
835 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 836 | |
313cefa1 | 837 | link->link_messages--; |
f882c247 | 838 | |
5da8149f | 839 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
840 | return 1; |
841 | ||
1c4baffc | 842 | r = sd_netlink_message_get_errno(m); |
c166a070 | 843 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 844 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 845 | else if (r >= 0) |
200a0868 | 846 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 847 | |
3c9b8860 | 848 | if (link->link_messages == 0) { |
6a7a4e4d | 849 | log_link_debug(link, "Addresses set"); |
ef1ba606 | 850 | link_enter_set_routes(link); |
dd3efc09 | 851 | } |
f882c247 TG |
852 | |
853 | return 1; | |
854 | } | |
855 | ||
95b74ef6 SS |
856 | static int address_label_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
857 | _cleanup_link_unref_ Link *link = userdata; | |
858 | int r; | |
859 | ||
860 | assert(rtnl); | |
861 | assert(m); | |
862 | assert(link); | |
863 | assert(link->ifname); | |
864 | assert(link->link_messages > 0); | |
865 | ||
866 | link->link_messages--; | |
867 | ||
868 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
869 | return 1; | |
870 | ||
871 | r = sd_netlink_message_get_errno(m); | |
872 | if (r < 0 && r != -EEXIST) | |
873 | log_link_warning_errno(link, r, "could not set address label: %m"); | |
874 | else if (r >= 0) | |
875 | manager_rtnl_process_address(rtnl, m, link->manager); | |
876 | ||
877 | if (link->link_messages == 0) { | |
878 | log_link_debug(link, "Addresses label set"); | |
879 | link_enter_set_routes(link); | |
880 | } | |
881 | ||
882 | return 1; | |
883 | } | |
884 | ||
a380b2d4 | 885 | static int link_push_uplink_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
4f5f911e LP |
886 | _cleanup_free_ struct in_addr *addresses = NULL; |
887 | size_t n_addresses = 0, n_allocated = 0; | |
5512a963 | 888 | unsigned i; |
4f5f911e LP |
889 | |
890 | log_debug("Copying DNS server information from %s", link->ifname); | |
891 | ||
892 | if (!link->network) | |
893 | return 0; | |
894 | ||
5512a963 | 895 | for (i = 0; i < link->network->n_dns; i++) { |
49ad6829 | 896 | struct in_addr ia; |
4f5f911e LP |
897 | |
898 | /* Only look for IPv4 addresses */ | |
5512a963 | 899 | if (link->network->dns[i].family != AF_INET) |
4f5f911e LP |
900 | continue; |
901 | ||
49ad6829 LP |
902 | ia = link->network->dns[i].address.in; |
903 | ||
904 | /* Never propagate obviously borked data */ | |
905 | if (in4_addr_is_null(&ia) || in4_addr_is_localhost(&ia)) | |
906 | continue; | |
907 | ||
4f5f911e LP |
908 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) |
909 | return log_oom(); | |
910 | ||
49ad6829 | 911 | addresses[n_addresses++] = ia; |
4f5f911e LP |
912 | } |
913 | ||
5512a963 | 914 | if (link->network->dhcp_use_dns && link->dhcp_lease) { |
4f5f911e LP |
915 | const struct in_addr *da = NULL; |
916 | int n; | |
917 | ||
918 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
919 | if (n > 0) { | |
920 | ||
921 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
922 | return log_oom(); | |
923 | ||
924 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
925 | n_addresses += n; | |
926 | } | |
927 | } | |
928 | ||
929 | if (n_addresses <= 0) | |
930 | return 0; | |
931 | ||
932 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
933 | } | |
934 | ||
a380b2d4 | 935 | static int link_push_uplink_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
4f5f911e LP |
936 | _cleanup_free_ struct in_addr *addresses = NULL; |
937 | size_t n_addresses = 0, n_allocated = 0; | |
938 | char **a; | |
939 | ||
940 | if (!link->network) | |
941 | return 0; | |
942 | ||
943 | log_debug("Copying NTP server information from %s", link->ifname); | |
944 | ||
945 | STRV_FOREACH(a, link->network->ntp) { | |
946 | struct in_addr ia; | |
947 | ||
948 | /* Only look for IPv4 addresses */ | |
949 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
950 | continue; | |
49ad6829 LP |
951 | |
952 | /* Never propagate obviously borked data */ | |
953 | if (in4_addr_is_null(&ia) || in4_addr_is_localhost(&ia)) | |
954 | continue; | |
4f5f911e LP |
955 | |
956 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
957 | return log_oom(); | |
958 | ||
959 | addresses[n_addresses++] = ia; | |
960 | } | |
961 | ||
5512a963 | 962 | if (link->network->dhcp_use_ntp && link->dhcp_lease) { |
4f5f911e LP |
963 | const struct in_addr *da = NULL; |
964 | int n; | |
965 | ||
966 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
967 | if (n > 0) { | |
968 | ||
969 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
970 | return log_oom(); | |
971 | ||
972 | memcpy(addresses + n_addresses, da, n * sizeof(struct in_addr)); | |
973 | n_addresses += n; | |
974 | } | |
975 | } | |
976 | ||
977 | if (n_addresses <= 0) | |
978 | return 0; | |
979 | ||
980 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
981 | } | |
982 | ||
f6bb7ac5 TJ |
983 | static int link_set_bridge_fdb(Link *link) { |
984 | FdbEntry *fdb_entry; | |
197e2809 | 985 | int r; |
f6bb7ac5 TJ |
986 | |
987 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
988 | r = fdb_entry_configure(link, fdb_entry); | |
197e2809 | 989 | if (r < 0) |
f6bb7ac5 | 990 | return log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
f6bb7ac5 TJ |
991 | } |
992 | ||
197e2809 | 993 | return 0; |
f6bb7ac5 TJ |
994 | } |
995 | ||
f882c247 | 996 | static int link_enter_set_addresses(Link *link) { |
95b74ef6 | 997 | AddressLabel *label; |
a6cc569e | 998 | Address *ad; |
f882c247 TG |
999 | int r; |
1000 | ||
1001 | assert(link); | |
1002 | assert(link->network); | |
f5be5601 | 1003 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 1004 | |
f6bb7ac5 TJ |
1005 | r = link_set_bridge_fdb(link); |
1006 | if (r < 0) | |
1007 | return r; | |
1008 | ||
e331e246 | 1009 | link_set_state(link, LINK_STATE_SETTING_ADDRESSES); |
f882c247 | 1010 | |
3d3d4255 | 1011 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
483d099e | 1012 | r = address_configure(ad, link, address_handler, false); |
dd3efc09 | 1013 | if (r < 0) { |
5a8bcb67 | 1014 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 | 1015 | link_enter_failed(link); |
95b74ef6 SS |
1016 | return r; |
1017 | } | |
1018 | ||
1019 | link->link_messages++; | |
1020 | } | |
1021 | ||
1022 | LIST_FOREACH(labels, label, link->network->address_labels) { | |
1023 | r = address_label_configure(label, link, address_label_handler, false); | |
1024 | if (r < 0) { | |
1025 | log_link_warning_errno(link, r, "Could not set address label: %m"); | |
1026 | link_enter_failed(link); | |
f5be5601 TG |
1027 | return r; |
1028 | } | |
1029 | ||
313cefa1 | 1030 | link->link_messages++; |
f882c247 TG |
1031 | } |
1032 | ||
d4cdbea5 TG |
1033 | /* now that we can figure out a default address for the dhcp server, |
1034 | start it */ | |
1035 | if (link_dhcp4_server_enabled(link)) { | |
d4cdbea5 | 1036 | Address *address; |
4f5f911e LP |
1037 | Link *uplink = NULL; |
1038 | bool acquired_uplink = false; | |
d4cdbea5 TG |
1039 | |
1040 | address = link_find_dhcp_server_address(link); | |
1041 | if (!address) { | |
6a7a4e4d | 1042 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
1043 | link_enter_failed(link); |
1044 | return 0; | |
1045 | } | |
1046 | ||
61986155 | 1047 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
1048 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
1049 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
1050 | if (r < 0) |
1051 | return r; | |
1052 | ||
1053 | /* TODO: | |
1054 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
1055 | &main_address->in_addr.in); | |
1056 | if (r < 0) | |
1057 | return r; | |
d4cdbea5 TG |
1058 | */ |
1059 | ||
586ac6f7 LP |
1060 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
1061 | r = sd_dhcp_server_set_max_lease_time( | |
1062 | link->dhcp_server, | |
1063 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
1064 | if (r < 0) | |
1065 | return r; | |
1066 | } | |
1067 | ||
1068 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
1069 | r = sd_dhcp_server_set_default_lease_time( | |
1070 | link->dhcp_server, | |
1071 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
1072 | if (r < 0) | |
1073 | return r; | |
1074 | } | |
1075 | ||
1a04db0f LP |
1076 | if (link->network->dhcp_server_emit_dns) { |
1077 | ||
4f5f911e | 1078 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 1079 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
1080 | else { |
1081 | uplink = manager_find_uplink(link->manager, link); | |
1082 | acquired_uplink = true; | |
1083 | ||
1084 | if (!uplink) { | |
1085 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
1086 | r = 0; | |
1087 | } else | |
a380b2d4 | 1088 | r = link_push_uplink_dns_to_dhcp_server(uplink, link->dhcp_server); |
4f5f911e LP |
1089 | } |
1090 | if (r < 0) | |
1091 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
1092 | } |
1093 | ||
1094 | ||
1095 | if (link->network->dhcp_server_emit_ntp) { | |
1096 | ||
4f5f911e | 1097 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 1098 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
1099 | else { |
1100 | if (!acquired_uplink) | |
1101 | uplink = manager_find_uplink(link->manager, link); | |
1102 | ||
1103 | if (!uplink) { | |
1104 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
1105 | r = 0; | |
1106 | } else | |
a380b2d4 | 1107 | r = link_push_uplink_ntp_to_dhcp_server(uplink, link->dhcp_server); |
4f5f911e LP |
1108 | |
1109 | } | |
1110 | if (r < 0) | |
1111 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
1112 | } |
1113 | ||
77ff6022 CG |
1114 | r = sd_dhcp_server_set_emit_router(link->dhcp_server, link->network->dhcp_server_emit_router); |
1115 | if (r < 0) { | |
1116 | log_link_warning_errno(link, r, "Failed to set router emission for DHCP server: %m"); | |
1117 | return r; | |
1118 | } | |
1119 | ||
8eb9058d LP |
1120 | if (link->network->dhcp_server_emit_timezone) { |
1121 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 1122 | const char *tz = NULL; |
8eb9058d LP |
1123 | |
1124 | if (link->network->dhcp_server_timezone) | |
1125 | tz = link->network->dhcp_server_timezone; | |
1126 | else { | |
1127 | r = get_timezone(&buffer); | |
1128 | if (r < 0) | |
1129 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
1130 | else | |
1131 | tz = buffer; | |
1132 | } | |
1133 | ||
1134 | if (tz) { | |
1135 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
1136 | if (r < 0) | |
1137 | return r; | |
1138 | } | |
1139 | } | |
1140 | ||
d4cdbea5 TG |
1141 | r = sd_dhcp_server_start(link->dhcp_server); |
1142 | if (r < 0) { | |
6a7a4e4d | 1143 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); |
d4cdbea5 TG |
1144 | |
1145 | link_enter_failed(link); | |
1146 | ||
1147 | return 0; | |
1148 | } | |
1149 | ||
6a7a4e4d | 1150 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
1151 | } |
1152 | ||
6a7a4e4d | 1153 | if (link->link_messages == 0) |
431ca2ce | 1154 | link_enter_set_routes(link); |
6a7a4e4d LP |
1155 | else |
1156 | log_link_debug(link, "Setting addresses"); | |
431ca2ce | 1157 | |
f882c247 TG |
1158 | return 0; |
1159 | } | |
1160 | ||
91b5f997 | 1161 | int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1162 | _cleanup_link_unref_ Link *link = userdata; |
ff254138 TG |
1163 | int r; |
1164 | ||
1165 | assert(m); | |
1166 | assert(link); | |
1167 | assert(link->ifname); | |
1168 | ||
5da8149f | 1169 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
ff254138 TG |
1170 | return 1; |
1171 | ||
1c4baffc | 1172 | r = sd_netlink_message_get_errno(m); |
b90b025a | 1173 | if (r < 0 && r != -EADDRNOTAVAIL) |
a2fae7bb | 1174 | log_link_warning_errno(link, r, "Could not drop address: %m"); |
ff254138 | 1175 | |
5bdd314c | 1176 | return 1; |
ff254138 TG |
1177 | } |
1178 | ||
13b498f9 TJ |
1179 | static int link_set_bridge_vlan(Link *link) { |
1180 | int r = 0; | |
1181 | ||
1182 | r = br_vlan_configure(link, link->network->pvid, link->network->br_vid_bitmap, link->network->br_untagged_bitmap); | |
1183 | if (r < 0) | |
1184 | log_link_error_errno(link, r, "Failed to assign VLANs to bridge port: %m"); | |
1185 | ||
1186 | return r; | |
1187 | } | |
1188 | ||
a60a720c | 1189 | static int link_set_proxy_arp(Link *link) { |
23d8b221 SS |
1190 | const char *p = NULL; |
1191 | int r; | |
1192 | ||
1193 | if (!link_proxy_arp_enabled(link)) | |
1194 | return 0; | |
1195 | ||
1196 | p = strjoina("/proc/sys/net/ipv4/conf/", link->ifname, "/proxy_arp"); | |
1197 | ||
1198 | r = write_string_file(p, one_zero(link->network->proxy_arp), WRITE_STRING_FILE_VERIFY_ON_FAILURE); | |
1199 | if (r < 0) | |
1200 | log_link_warning_errno(link, r, "Cannot configure proxy ARP for interface: %m"); | |
1201 | ||
1202 | return 0; | |
1203 | } | |
1204 | ||
1c4baffc | 1205 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
e1853b00 SS |
1206 | _cleanup_link_unref_ Link *link = userdata; |
1207 | int r; | |
1208 | ||
6a7a4e4d | 1209 | log_link_debug(link, "Set link"); |
e1853b00 | 1210 | |
1c4baffc | 1211 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 1212 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 1213 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 SS |
1214 | link_enter_failed(link); |
1215 | return 1; | |
1216 | } | |
1217 | ||
1218 | return 0; | |
1219 | } | |
1220 | ||
1c4baffc | 1221 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1222 | _cleanup_link_unref_ Link *link = userdata; |
4f882b2a TG |
1223 | int r; |
1224 | ||
1225 | assert(m); | |
1226 | assert(link); | |
1227 | assert(link->ifname); | |
1228 | ||
5da8149f | 1229 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1230 | return 1; |
1231 | ||
1c4baffc | 1232 | r = sd_netlink_message_get_errno(m); |
c9ccc19f | 1233 | if (r < 0) |
a2fae7bb | 1234 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
4f882b2a TG |
1235 | |
1236 | return 1; | |
1237 | } | |
1238 | ||
3c9b8860 | 1239 | int link_set_mtu(Link *link, uint32_t mtu) { |
4afd3348 | 1240 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f882b2a TG |
1241 | int r; |
1242 | ||
1243 | assert(link); | |
1244 | assert(link->manager); | |
1245 | assert(link->manager->rtnl); | |
1246 | ||
6a7a4e4d | 1247 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1248 | |
6a7a4e4d LP |
1249 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1250 | if (r < 0) | |
1251 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1252 | |
1c4baffc | 1253 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1254 | if (r < 0) |
1255 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1256 | |
1c4baffc | 1257 | r = sd_netlink_call_async(link->manager->rtnl, req, set_mtu_handler, link, 0, NULL); |
6a7a4e4d LP |
1258 | if (r < 0) |
1259 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1260 | |
ae941762 | 1261 | link_ref(link); |
b226d99b | 1262 | |
4f882b2a TG |
1263 | return 0; |
1264 | } | |
1265 | ||
99d2baa2 SS |
1266 | static int set_flags_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
1267 | _cleanup_link_unref_ Link *link = userdata; | |
1268 | int r; | |
1269 | ||
1270 | assert(m); | |
1271 | assert(link); | |
1272 | assert(link->ifname); | |
1273 | ||
1274 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1275 | return 1; | |
1276 | ||
1277 | r = sd_netlink_message_get_errno(m); | |
1278 | if (r < 0) | |
1279 | log_link_warning_errno(link, r, "Could not set link flags: %m"); | |
1280 | ||
1281 | return 1; | |
1282 | } | |
1283 | ||
1284 | static int link_set_flags(Link *link) { | |
1285 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1286 | unsigned ifi_change = 0; | |
1287 | unsigned ifi_flags = 0; | |
1288 | int r; | |
1289 | ||
1290 | assert(link); | |
1291 | assert(link->manager); | |
1292 | assert(link->manager->rtnl); | |
1293 | ||
1294 | if (link->flags & IFF_LOOPBACK) | |
1295 | return 0; | |
1296 | ||
1297 | if (!link->network) | |
1298 | return 0; | |
1299 | ||
1300 | if (link->network->arp < 0) | |
1301 | return 0; | |
1302 | ||
1303 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1304 | if (r < 0) | |
1305 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1306 | ||
1307 | if (link->network->arp >= 0) { | |
1308 | ifi_change |= IFF_NOARP; | |
1ed1f50f | 1309 | ifi_flags |= link->network->arp ? 0 : IFF_NOARP; |
99d2baa2 SS |
1310 | } |
1311 | ||
1312 | r = sd_rtnl_message_link_set_flags(req, ifi_flags, ifi_change); | |
1313 | if (r < 0) | |
1314 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
1315 | ||
1316 | r = sd_netlink_call_async(link->manager->rtnl, req, set_flags_handler, link, 0, NULL); | |
1317 | if (r < 0) | |
1318 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1319 | ||
1320 | link_ref(link); | |
1321 | ||
1322 | return 0; | |
1323 | } | |
1324 | ||
e1853b00 | 1325 | static int link_set_bridge(Link *link) { |
4afd3348 | 1326 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
e1853b00 SS |
1327 | int r; |
1328 | ||
1329 | assert(link); | |
1330 | assert(link->network); | |
1331 | ||
6a7a4e4d LP |
1332 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1333 | if (r < 0) | |
1334 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1335 | |
1336 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1337 | if (r < 0) |
1338 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1339 | |
1c4baffc | 1340 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1341 | if (r < 0) |
1342 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1343 | |
84c34096 | 1344 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, !link->network->use_bpdu); |
eb7ff4dd SS |
1345 | if (r < 0) |
1346 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1347 | ||
1348 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1349 | if (r < 0) | |
1350 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1351 | ||
1352 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1353 | if (r < 0) | |
1354 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1355 | ||
23da66bb | 1356 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, !link->network->allow_port_to_be_root); |
eb7ff4dd SS |
1357 | if (r < 0) |
1358 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
1359 | ||
1360 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1361 | if (r < 0) | |
1362 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
1363 | ||
34437b4f | 1364 | if (link->network->cost != 0) { |
1c4baffc | 1365 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1366 | if (r < 0) |
1367 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 | 1368 | } |
b56be296 DJL |
1369 | if (link->network->priority != LINK_BRIDGE_PORT_PRIORITY_INVALID) { |
1370 | r = sd_netlink_message_append_u16(req, IFLA_BRPORT_PRIORITY, link->network->priority); | |
1371 | if (r < 0) | |
1372 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PRIORITY attribute: %m"); | |
1373 | } | |
e1853b00 | 1374 | |
1c4baffc | 1375 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1376 | if (r < 0) |
1377 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1378 | |
1c4baffc | 1379 | r = sd_netlink_call_async(link->manager->rtnl, req, link_set_handler, link, 0, NULL); |
6a7a4e4d LP |
1380 | if (r < 0) |
1381 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1382 | |
1383 | link_ref(link); | |
1384 | ||
1385 | return r; | |
1386 | } | |
1387 | ||
eb64b435 SS |
1388 | static int link_bond_set(Link *link) { |
1389 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1390 | int r; | |
1391 | ||
1392 | assert(link); | |
1393 | assert(link->network); | |
1394 | ||
1395 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_NEWLINK, link->network->bond->ifindex); | |
1396 | if (r < 0) | |
1397 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1398 | ||
1399 | r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK); | |
1400 | if (r < 0) | |
1401 | return log_link_error_errno(link, r, "Could not set netlink flags: %m"); | |
1402 | ||
1403 | r = sd_netlink_message_open_container(req, IFLA_LINKINFO); | |
1404 | if (r < 0) | |
1405 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
1406 | ||
1407 | r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, "bond"); | |
1408 | if (r < 0) | |
1409 | return log_link_error_errno(link, r, "Could not append IFLA_INFO_DATA attribute: %m"); | |
1410 | ||
1411 | if (link->network->active_slave) { | |
1412 | r = sd_netlink_message_append_u32(req, IFLA_BOND_ACTIVE_SLAVE, link->ifindex); | |
1413 | if (r < 0) | |
1414 | return log_link_error_errno(link, r, "Could not append IFLA_BOND_ACTIVE_SLAVE attribute: %m"); | |
1415 | } | |
1416 | ||
1417 | if (link->network->primary_slave) { | |
1418 | r = sd_netlink_message_append_u32(req, IFLA_BOND_PRIMARY, link->ifindex); | |
1419 | if (r < 0) | |
1420 | return log_link_error_errno(link, r, "Could not append IFLA_BOND_PRIMARY attribute: %m"); | |
1421 | } | |
1422 | ||
1423 | r = sd_netlink_message_close_container(req); | |
1424 | if (r < 0) | |
1425 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
1426 | ||
1427 | r = sd_netlink_message_close_container(req); | |
1428 | if (r < 0) | |
1429 | return log_link_error_errno(link, r, "Could not append IFLA_INFO_DATA attribute: %m"); | |
1430 | ||
1431 | r = sd_netlink_call_async(link->manager->rtnl, req, set_flags_handler, link, 0, NULL); | |
1432 | if (r < 0) | |
1433 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1434 | ||
1435 | link_ref(link); | |
1436 | ||
1437 | return r; | |
1438 | } | |
1439 | ||
34437b4f LP |
1440 | static int link_lldp_save(Link *link) { |
1441 | _cleanup_free_ char *temp_path = NULL; | |
1442 | _cleanup_fclose_ FILE *f = NULL; | |
1443 | sd_lldp_neighbor **l = NULL; | |
1444 | int n = 0, r, i; | |
49699bac SS |
1445 | |
1446 | assert(link); | |
34437b4f LP |
1447 | assert(link->lldp_file); |
1448 | ||
1449 | if (!link->lldp) { | |
1450 | (void) unlink(link->lldp_file); | |
1451 | return 0; | |
1452 | } | |
1453 | ||
1454 | r = sd_lldp_get_neighbors(link->lldp, &l); | |
1455 | if (r < 0) | |
1456 | goto finish; | |
1457 | if (r == 0) { | |
1458 | (void) unlink(link->lldp_file); | |
1459 | goto finish; | |
1460 | } | |
1461 | ||
1462 | n = r; | |
1463 | ||
1464 | r = fopen_temporary(link->lldp_file, &f, &temp_path); | |
1465 | if (r < 0) | |
1466 | goto finish; | |
1467 | ||
1468 | fchmod(fileno(f), 0644); | |
49699bac | 1469 | |
34437b4f LP |
1470 | for (i = 0; i < n; i++) { |
1471 | const void *p; | |
1472 | le64_t u; | |
1473 | size_t sz; | |
1474 | ||
1475 | r = sd_lldp_neighbor_get_raw(l[i], &p, &sz); | |
9ef61f2e | 1476 | if (r < 0) |
34437b4f LP |
1477 | goto finish; |
1478 | ||
1479 | u = htole64(sz); | |
1480 | (void) fwrite(&u, 1, sizeof(u), f); | |
1481 | (void) fwrite(p, 1, sz, f); | |
1482 | } | |
49699bac | 1483 | |
34437b4f LP |
1484 | r = fflush_and_check(f); |
1485 | if (r < 0) | |
1486 | goto finish; | |
1487 | ||
1488 | if (rename(temp_path, link->lldp_file) < 0) { | |
1489 | r = -errno; | |
1490 | goto finish; | |
9ef61f2e | 1491 | } |
34437b4f LP |
1492 | |
1493 | finish: | |
1494 | if (r < 0) { | |
1495 | (void) unlink(link->lldp_file); | |
1496 | if (temp_path) | |
1497 | (void) unlink(temp_path); | |
1498 | ||
1499 | log_link_error_errno(link, r, "Failed to save LLDP data to %s: %m", link->lldp_file); | |
1500 | } | |
1501 | ||
1502 | if (l) { | |
1503 | for (i = 0; i < n; i++) | |
1504 | sd_lldp_neighbor_unref(l[i]); | |
1505 | free(l); | |
1506 | } | |
1507 | ||
1508 | return r; | |
1509 | } | |
1510 | ||
90dffb22 | 1511 | static void lldp_handler(sd_lldp *lldp, sd_lldp_event event, sd_lldp_neighbor *n, void *userdata) { |
34437b4f | 1512 | Link *link = userdata; |
90dffb22 | 1513 | int r; |
34437b4f LP |
1514 | |
1515 | assert(link); | |
1516 | ||
1517 | (void) link_lldp_save(link); | |
90dffb22 | 1518 | |
7272b25e | 1519 | if (link_lldp_emit_enabled(link) && event == SD_LLDP_EVENT_ADDED) { |
90dffb22 LP |
1520 | /* If we received information about a new neighbor, restart the LLDP "fast" logic */ |
1521 | ||
1522 | log_link_debug(link, "Received LLDP datagram from previously unknown neighbor, restarting 'fast' LLDP transmission."); | |
1523 | ||
7272b25e | 1524 | r = link_lldp_emit_start(link); |
90dffb22 LP |
1525 | if (r < 0) |
1526 | log_link_warning_errno(link, r, "Failed to restart LLDP transmission: %m"); | |
1527 | } | |
49699bac SS |
1528 | } |
1529 | ||
e7ab854c TG |
1530 | static int link_acquire_ipv6_conf(Link *link) { |
1531 | int r; | |
1532 | ||
1533 | assert(link); | |
1534 | ||
1535 | if (link_dhcp6_enabled(link)) { | |
1536 | assert(link->dhcp6_client); | |
c601ebf7 | 1537 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); |
e7ab854c | 1538 | |
720bec40 TY |
1539 | /* start DHCPv6 client in stateless mode */ |
1540 | r = dhcp6_request_address(link, true); | |
63348d13 | 1541 | if (r < 0 && r != -EBUSY) |
e7ab854c | 1542 | return log_link_warning_errno(link, r, "Could not acquire DHCPv6 lease: %m"); |
720bec40 TY |
1543 | else |
1544 | log_link_debug(link, "Acquiring DHCPv6 lease"); | |
e7ab854c TG |
1545 | } |
1546 | ||
1547 | if (link_ipv6_accept_ra_enabled(link)) { | |
1e7a0e21 | 1548 | assert(link->ndisc); |
e7ab854c TG |
1549 | |
1550 | log_link_debug(link, "Discovering IPv6 routers"); | |
1551 | ||
1e7a0e21 | 1552 | r = sd_ndisc_start(link->ndisc); |
63348d13 | 1553 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1554 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
1555 | } | |
1556 | ||
1557 | return 0; | |
1558 | } | |
1559 | ||
6fc25497 | 1560 | static int link_acquire_ipv4_conf(Link *link) { |
ff254138 TG |
1561 | int r; |
1562 | ||
1563 | assert(link); | |
1564 | assert(link->network); | |
ff254138 TG |
1565 | assert(link->manager); |
1566 | assert(link->manager->event); | |
1567 | ||
78c958f8 | 1568 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1569 | assert(link->ipv4ll); |
ff254138 | 1570 | |
6a7a4e4d | 1571 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1572 | |
1573 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1574 | if (r < 0) |
1575 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1576 | } |
1577 | ||
78c958f8 | 1578 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1579 | assert(link->dhcp_client); |
ff254138 | 1580 | |
6a7a4e4d | 1581 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1582 | |
5c1d3fc9 | 1583 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1584 | if (r < 0) |
1585 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1586 | } |
ff254138 | 1587 | |
6fc25497 SS |
1588 | return 0; |
1589 | } | |
1590 | ||
1591 | static int link_acquire_conf(Link *link) { | |
1592 | int r; | |
1593 | ||
1594 | assert(link); | |
1595 | ||
1596 | r = link_acquire_ipv4_conf(link); | |
1597 | if (r < 0) | |
1598 | return r; | |
1599 | ||
1600 | if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) == 0) { | |
1601 | r = link_acquire_ipv6_conf(link); | |
1602 | if (r < 0) | |
1603 | return r; | |
1604 | } | |
1605 | ||
7272b25e LP |
1606 | if (link_lldp_emit_enabled(link)) { |
1607 | r = link_lldp_emit_start(link); | |
8e1ad1ea LP |
1608 | if (r < 0) |
1609 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
1610 | } | |
1611 | ||
ff254138 TG |
1612 | return 0; |
1613 | } | |
1614 | ||
a61bb41c | 1615 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1616 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1617 | ||
a61bb41c | 1618 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1619 | return true; |
1620 | ||
a61bb41c | 1621 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1622 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1623 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1624 | return true; |
1625 | ||
1626 | return false; | |
1627 | } | |
1628 | ||
1c4baffc | 1629 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 1630 | _cleanup_link_unref_ Link *link = userdata; |
dd3efc09 TG |
1631 | int r; |
1632 | ||
1746cf2a TG |
1633 | assert(link); |
1634 | ||
5da8149f | 1635 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1636 | return 1; |
1637 | ||
1c4baffc | 1638 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d LP |
1639 | if (r < 0) |
1640 | /* we warn but don't fail the link, as it may be | |
1641 | brought up later */ | |
a2fae7bb | 1642 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1643 | |
f882c247 TG |
1644 | return 1; |
1645 | } | |
1646 | ||
1647 | static int link_up(Link *link) { | |
4afd3348 | 1648 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
5c3072ea | 1649 | uint8_t ipv6ll_mode; |
f579559b TG |
1650 | int r; |
1651 | ||
f882c247 | 1652 | assert(link); |
c106cc36 | 1653 | assert(link->network); |
f882c247 TG |
1654 | assert(link->manager); |
1655 | assert(link->manager->rtnl); | |
1656 | ||
6a7a4e4d | 1657 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1658 | |
6a7a4e4d LP |
1659 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1660 | if (r < 0) | |
1661 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1662 | |
2b2d8603 | 1663 | /* set it free if not enslaved with networkd */ |
6cb955c6 | 1664 | if (!link->network->bridge && !link->network->bond && !link->network->vrf) { |
2b2d8603 TY |
1665 | r = sd_netlink_message_append_u32(req, IFLA_MASTER, 0); |
1666 | if (r < 0) | |
1667 | return log_link_error_errno(link, r, "Could not append IFLA_MASTER attribute: %m"); | |
1668 | } | |
1669 | ||
5d4795f3 | 1670 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1671 | if (r < 0) |
1672 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1673 | |
c106cc36 | 1674 | if (link->network->mac) { |
1c4baffc | 1675 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1676 | if (r < 0) |
1677 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1678 | } |
1679 | ||
4cef7fe3 | 1680 | /* If IPv6 not configured (no static IPv6 address and IPv6LL autoconfiguration is disabled) |
2b00a4e0 | 1681 | for this interface, or if it is a bridge slave, then disable IPv6 else enable it. */ |
439689c6 SS |
1682 | (void) link_enable_ipv6(link); |
1683 | ||
c106cc36 | 1684 | if (link->network->mtu) { |
439689c6 SS |
1685 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes |
1686 | on the interface. Bump up MTU bytes to IPV6_MTU_MIN. */ | |
1687 | if (link_ipv6_enabled(link) && link->network->mtu < IPV6_MIN_MTU) { | |
1688 | ||
1689 | log_link_warning(link, "Bumping MTU to " STRINGIFY(IPV6_MIN_MTU) ", as " | |
1690 | "IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes: %m"); | |
1691 | ||
1692 | link->network->mtu = IPV6_MIN_MTU; | |
1693 | } | |
1694 | ||
1c4baffc | 1695 | r = sd_netlink_message_append_u32(req, IFLA_MTU, link->network->mtu); |
6a7a4e4d LP |
1696 | if (r < 0) |
1697 | return log_link_error_errno(link, r, "Could not set MTU: %m"); | |
c106cc36 TG |
1698 | } |
1699 | ||
1c4baffc | 1700 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
6a7a4e4d LP |
1701 | if (r < 0) |
1702 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1703 | |
439689c6 | 1704 | if (link_ipv6_enabled(link)) { |
01d28f81 | 1705 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ |
1c4baffc | 1706 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
1707 | if (r < 0) |
1708 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 1709 | |
fbc38f23 TY |
1710 | if (!link_ipv6ll_enabled(link)) |
1711 | ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE; | |
1712 | else { | |
1713 | const char *p = NULL; | |
1714 | _cleanup_free_ char *stable_secret = NULL; | |
1715 | ||
1716 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/stable_secret"); | |
1717 | r = read_one_line_file(p, &stable_secret); | |
1718 | ||
1719 | if (r < 0) | |
1720 | ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64; | |
1721 | else | |
1722 | ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
1723 | } | |
1c4baffc | 1724 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); |
01d28f81 TG |
1725 | if (r < 0) |
1726 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
d0d6a4cd | 1727 | |
01d28f81 | 1728 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 1729 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
1730 | if (r < 0) |
1731 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
1732 | } | |
1733 | ||
1c4baffc | 1734 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 1735 | if (r < 0) |
01d28f81 | 1736 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
7f77697a | 1737 | } |
d0d6a4cd | 1738 | |
1c4baffc | 1739 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1740 | if (r < 0) |
1741 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
d0d6a4cd | 1742 | |
1c4baffc | 1743 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); |
6a7a4e4d LP |
1744 | if (r < 0) |
1745 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1746 | |
b226d99b TG |
1747 | link_ref(link); |
1748 | ||
f882c247 TG |
1749 | return 0; |
1750 | } | |
1751 | ||
1c4baffc | 1752 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
0d4ad91d AR |
1753 | _cleanup_link_unref_ Link *link = userdata; |
1754 | int r; | |
1755 | ||
1756 | assert(link); | |
1757 | ||
1758 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1759 | return 1; | |
1760 | ||
1c4baffc | 1761 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1762 | if (r < 0) |
a2fae7bb | 1763 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d AR |
1764 | |
1765 | return 1; | |
1766 | } | |
1767 | ||
1768 | static int link_down(Link *link) { | |
4afd3348 | 1769 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
0d4ad91d AR |
1770 | int r; |
1771 | ||
1772 | assert(link); | |
1773 | assert(link->manager); | |
1774 | assert(link->manager->rtnl); | |
1775 | ||
6a7a4e4d | 1776 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1777 | |
1778 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1779 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1780 | if (r < 0) |
1781 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1782 | |
1783 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1784 | if (r < 0) |
1785 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1786 | |
1c4baffc | 1787 | r = sd_netlink_call_async(link->manager->rtnl, req, link_down_handler, link, 0, NULL); |
6a7a4e4d LP |
1788 | if (r < 0) |
1789 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1790 | |
1791 | link_ref(link); | |
1792 | ||
1793 | return 0; | |
1794 | } | |
1795 | ||
92c918b0 SS |
1796 | static int link_up_can(Link *link) { |
1797 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1798 | int r; | |
1799 | ||
1800 | assert(link); | |
1801 | ||
1802 | log_link_debug(link, "Bringing CAN link up"); | |
1803 | ||
1804 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1805 | if (r < 0) | |
1806 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1807 | ||
1808 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); | |
1809 | if (r < 0) | |
1810 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
1811 | ||
1812 | r = sd_netlink_call_async(link->manager->rtnl, req, link_up_handler, link, 0, NULL); | |
1813 | if (r < 0) | |
1814 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1815 | ||
1816 | link_ref(link); | |
1817 | ||
1818 | return 0; | |
1819 | } | |
1820 | ||
0d4ad91d AR |
1821 | static int link_handle_bound_to_list(Link *link) { |
1822 | Link *l; | |
1823 | Iterator i; | |
1824 | int r; | |
1825 | bool required_up = false; | |
1826 | bool link_is_up = false; | |
1827 | ||
1828 | assert(link); | |
1829 | ||
1830 | if (hashmap_isempty(link->bound_to_links)) | |
1831 | return 0; | |
1832 | ||
1833 | if (link->flags & IFF_UP) | |
1834 | link_is_up = true; | |
1835 | ||
1836 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
1837 | if (link_has_carrier(l)) { | |
1838 | required_up = true; | |
1839 | break; | |
1840 | } | |
1841 | ||
1842 | if (!required_up && link_is_up) { | |
1843 | r = link_down(link); | |
1844 | if (r < 0) | |
1845 | return r; | |
1846 | } else if (required_up && !link_is_up) { | |
1847 | r = link_up(link); | |
1848 | if (r < 0) | |
1849 | return r; | |
1850 | } | |
1851 | ||
1852 | return 0; | |
1853 | } | |
1854 | ||
1855 | static int link_handle_bound_by_list(Link *link) { | |
1856 | Iterator i; | |
1857 | Link *l; | |
1858 | int r; | |
1859 | ||
1860 | assert(link); | |
1861 | ||
1862 | if (hashmap_isempty(link->bound_by_links)) | |
1863 | return 0; | |
1864 | ||
1865 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
1866 | r = link_handle_bound_to_list(l); | |
1867 | if (r < 0) | |
1868 | return r; | |
1869 | } | |
1870 | ||
1871 | return 0; | |
1872 | } | |
1873 | ||
1874 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1875 | int r; | |
1876 | ||
1877 | assert(link); | |
1878 | assert(carrier); | |
1879 | ||
1880 | if (link == carrier) | |
1881 | return 0; | |
1882 | ||
1883 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1884 | return 0; | |
1885 | ||
1886 | r = hashmap_ensure_allocated(h, NULL); | |
1887 | if (r < 0) | |
1888 | return r; | |
1889 | ||
1890 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1891 | if (r < 0) | |
1892 | return r; | |
1893 | ||
1894 | return 0; | |
1895 | } | |
1896 | ||
1897 | static int link_new_bound_by_list(Link *link) { | |
1898 | Manager *m; | |
1899 | Link *carrier; | |
1900 | Iterator i; | |
1901 | int r; | |
1902 | bool list_updated = false; | |
1903 | ||
1904 | assert(link); | |
1905 | assert(link->manager); | |
1906 | ||
1907 | m = link->manager; | |
1908 | ||
b295beea | 1909 | HASHMAP_FOREACH(carrier, m->links, i) { |
0d4ad91d AR |
1910 | if (!carrier->network) |
1911 | continue; | |
1912 | ||
1913 | if (strv_isempty(carrier->network->bind_carrier)) | |
1914 | continue; | |
1915 | ||
1916 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
1917 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
1918 | if (r < 0) | |
1919 | return r; | |
1920 | ||
1921 | list_updated = true; | |
1922 | } | |
1923 | } | |
1924 | ||
1925 | if (list_updated) | |
84de38c5 | 1926 | link_dirty(link); |
0d4ad91d | 1927 | |
b295beea | 1928 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
0d4ad91d AR |
1929 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
1930 | if (r < 0) | |
1931 | return r; | |
1932 | ||
84de38c5 | 1933 | link_dirty(carrier); |
0d4ad91d AR |
1934 | } |
1935 | ||
1936 | return 0; | |
1937 | } | |
1938 | ||
1939 | static int link_new_bound_to_list(Link *link) { | |
1940 | Manager *m; | |
1941 | Link *carrier; | |
1942 | Iterator i; | |
1943 | int r; | |
1944 | bool list_updated = false; | |
1945 | ||
1946 | assert(link); | |
1947 | assert(link->manager); | |
1948 | ||
1949 | if (!link->network) | |
1950 | return 0; | |
1951 | ||
1952 | if (strv_isempty(link->network->bind_carrier)) | |
1953 | return 0; | |
1954 | ||
1955 | m = link->manager; | |
1956 | ||
1957 | HASHMAP_FOREACH (carrier, m->links, i) { | |
1958 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
1959 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
1960 | if (r < 0) | |
1961 | return r; | |
1962 | ||
1963 | list_updated = true; | |
1964 | } | |
1965 | } | |
1966 | ||
1967 | if (list_updated) | |
84de38c5 | 1968 | link_dirty(link); |
0d4ad91d AR |
1969 | |
1970 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
1971 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
1972 | if (r < 0) | |
1973 | return r; | |
1974 | ||
84de38c5 | 1975 | link_dirty(carrier); |
0d4ad91d AR |
1976 | } |
1977 | ||
1978 | return 0; | |
1979 | } | |
1980 | ||
1981 | static int link_new_carrier_maps(Link *link) { | |
1982 | int r; | |
1983 | ||
1984 | r = link_new_bound_by_list(link); | |
1985 | if (r < 0) | |
1986 | return r; | |
1987 | ||
1988 | r = link_handle_bound_by_list(link); | |
1989 | if (r < 0) | |
1990 | return r; | |
1991 | ||
1992 | r = link_new_bound_to_list(link); | |
1993 | if (r < 0) | |
1994 | return r; | |
1995 | ||
1996 | r = link_handle_bound_to_list(link); | |
1997 | if (r < 0) | |
1998 | return r; | |
1999 | ||
2000 | return 0; | |
2001 | } | |
2002 | ||
2003 | static void link_free_bound_to_list(Link *link) { | |
2004 | Link *bound_to; | |
2005 | Iterator i; | |
2006 | ||
2007 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
2008 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
2009 | ||
2010 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 2011 | link_dirty(bound_to); |
0d4ad91d AR |
2012 | } |
2013 | ||
2014 | return; | |
2015 | } | |
2016 | ||
2017 | static void link_free_bound_by_list(Link *link) { | |
2018 | Link *bound_by; | |
2019 | Iterator i; | |
2020 | ||
2021 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
2022 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
2023 | ||
2024 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 2025 | link_dirty(bound_by); |
0d4ad91d AR |
2026 | link_handle_bound_to_list(bound_by); |
2027 | } | |
2028 | } | |
2029 | ||
2030 | return; | |
2031 | } | |
2032 | ||
2033 | static void link_free_carrier_maps(Link *link) { | |
2034 | bool list_updated = false; | |
2035 | ||
2036 | assert(link); | |
2037 | ||
2038 | if (!hashmap_isempty(link->bound_to_links)) { | |
2039 | link_free_bound_to_list(link); | |
2040 | list_updated = true; | |
2041 | } | |
2042 | ||
2043 | if (!hashmap_isempty(link->bound_by_links)) { | |
2044 | link_free_bound_by_list(link); | |
2045 | list_updated = true; | |
2046 | } | |
2047 | ||
2048 | if (list_updated) | |
84de38c5 | 2049 | link_dirty(link); |
0d4ad91d AR |
2050 | |
2051 | return; | |
2052 | } | |
2053 | ||
2054 | void link_drop(Link *link) { | |
2055 | if (!link || link->state == LINK_STATE_LINGER) | |
2056 | return; | |
2057 | ||
2058 | link_set_state(link, LINK_STATE_LINGER); | |
2059 | ||
2060 | link_free_carrier_maps(link); | |
2061 | ||
6a7a4e4d | 2062 | log_link_debug(link, "Link removed"); |
0d4ad91d | 2063 | |
84de38c5 | 2064 | (void)unlink(link->state_file); |
0d4ad91d AR |
2065 | link_unref(link); |
2066 | ||
2067 | return; | |
2068 | } | |
2069 | ||
3f265037 | 2070 | static int link_joined(Link *link) { |
f882c247 TG |
2071 | int r; |
2072 | ||
ef1ba606 | 2073 | assert(link); |
f5be5601 | 2074 | assert(link->network); |
dd3efc09 | 2075 | |
0d4ad91d AR |
2076 | if (!hashmap_isempty(link->bound_to_links)) { |
2077 | r = link_handle_bound_to_list(link); | |
2078 | if (r < 0) | |
2079 | return r; | |
2080 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
2081 | r = link_up(link); |
2082 | if (r < 0) { | |
2083 | link_enter_failed(link); | |
2084 | return r; | |
2085 | } | |
ef1ba606 | 2086 | } |
f882c247 | 2087 | |
9ed794a3 | 2088 | if (link->network->bridge) { |
e1853b00 | 2089 | r = link_set_bridge(link); |
6a7a4e4d LP |
2090 | if (r < 0) |
2091 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
e1853b00 SS |
2092 | } |
2093 | ||
eb64b435 SS |
2094 | if (link->network->bond) { |
2095 | r = link_bond_set(link); | |
2096 | if (r < 0) | |
2097 | log_link_error_errno(link, r, "Could not set bond message: %m"); | |
2098 | } | |
2099 | ||
ffff9abe TJ |
2100 | if (link->network->use_br_vlan && |
2101 | (link->network->bridge || streq_ptr("bridge", link->kind))) { | |
13b498f9 TJ |
2102 | r = link_set_bridge_vlan(link); |
2103 | if (r < 0) | |
2104 | log_link_error_errno(link, r, "Could not set bridge vlan: %m"); | |
2105 | } | |
2106 | ||
fb6730c4 | 2107 | return link_enter_set_addresses(link); |
02b59d57 TG |
2108 | } |
2109 | ||
62e2d5bb | 2110 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { |
5da8149f | 2111 | _cleanup_link_unref_ Link *link = userdata; |
02b59d57 TG |
2112 | int r; |
2113 | ||
1746cf2a | 2114 | assert(link); |
ef1ba606 | 2115 | assert(link->network); |
02b59d57 | 2116 | |
313cefa1 | 2117 | link->enslaving--; |
52433f6b | 2118 | |
5da8149f | 2119 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
2120 | return 1; |
2121 | ||
1c4baffc | 2122 | r = sd_netlink_message_get_errno(m); |
856f962c | 2123 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 2124 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
2125 | link_enter_failed(link); |
2126 | return 1; | |
ba179154 | 2127 | } else |
6a7a4e4d | 2128 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 2129 | |
856f962c | 2130 | if (link->enslaving <= 0) |
3f265037 | 2131 | link_joined(link); |
02b59d57 TG |
2132 | |
2133 | return 1; | |
2134 | } | |
2135 | ||
3f265037 | 2136 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 2137 | NetDev *netdev; |
672682a6 | 2138 | Iterator i; |
02b59d57 TG |
2139 | int r; |
2140 | ||
2141 | assert(link); | |
2142 | assert(link->network); | |
8434fd5c | 2143 | assert(link->state == LINK_STATE_PENDING); |
02b59d57 | 2144 | |
e331e246 | 2145 | link_set_state(link, LINK_STATE_ENSLAVING); |
02b59d57 | 2146 | |
84de38c5 | 2147 | link_dirty(link); |
fe8db0c5 | 2148 | |
7951dea2 SS |
2149 | if (!link->network->bridge && |
2150 | !link->network->bond && | |
6cb955c6 | 2151 | !link->network->vrf && |
6a0a2f86 | 2152 | hashmap_isempty(link->network->stacked_netdevs)) |
3f265037 | 2153 | return link_joined(link); |
02b59d57 | 2154 | |
d9c67ea1 | 2155 | if (link->network->bond) { |
f2341e0a LP |
2156 | log_struct(LOG_DEBUG, |
2157 | LOG_LINK_INTERFACE(link), | |
2158 | LOG_NETDEV_INTERFACE(link->network->bond), | |
2159 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname), | |
2160 | NULL); | |
2161 | ||
2162 | r = netdev_join(link->network->bond, link, netdev_join_handler); | |
52433f6b | 2163 | if (r < 0) { |
f2341e0a LP |
2164 | log_struct_errno(LOG_WARNING, r, |
2165 | LOG_LINK_INTERFACE(link), | |
2166 | LOG_NETDEV_INTERFACE(link->network->bond), | |
2167 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname), | |
2168 | NULL); | |
2169 | ||
52433f6b TG |
2170 | link_enter_failed(link); |
2171 | return r; | |
2172 | } | |
2173 | ||
313cefa1 | 2174 | link->enslaving++; |
0ad6148e MO |
2175 | } |
2176 | ||
d9c67ea1 | 2177 | if (link->network->bridge) { |
f2341e0a LP |
2178 | log_struct(LOG_DEBUG, |
2179 | LOG_LINK_INTERFACE(link), | |
2180 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
2181 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname), | |
2182 | NULL); | |
2183 | ||
2184 | r = netdev_join(link->network->bridge, link, netdev_join_handler); | |
0ad6148e | 2185 | if (r < 0) { |
f2341e0a LP |
2186 | log_struct_errno(LOG_WARNING, r, |
2187 | LOG_LINK_INTERFACE(link), | |
2188 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
2189 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname), | |
2190 | NULL), | |
0ad6148e MO |
2191 | link_enter_failed(link); |
2192 | return r; | |
2193 | } | |
2194 | ||
313cefa1 | 2195 | link->enslaving++; |
52433f6b TG |
2196 | } |
2197 | ||
6cb955c6 AR |
2198 | if (link->network->vrf) { |
2199 | log_struct(LOG_DEBUG, | |
2200 | LOG_LINK_INTERFACE(link), | |
2201 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
2202 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->vrf->ifname), | |
2203 | NULL); | |
2204 | r = netdev_join(link->network->vrf, link, netdev_join_handler); | |
2205 | if (r < 0) { | |
2206 | log_struct_errno(LOG_WARNING, r, | |
2207 | LOG_LINK_INTERFACE(link), | |
2208 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
2209 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->vrf->ifname), | |
2210 | NULL); | |
2211 | link_enter_failed(link); | |
2212 | return r; | |
2213 | } | |
2214 | ||
2215 | link->enslaving++; | |
2216 | } | |
2217 | ||
6a0a2f86 | 2218 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 2219 | |
f2341e0a LP |
2220 | log_struct(LOG_DEBUG, |
2221 | LOG_LINK_INTERFACE(link), | |
2222 | LOG_NETDEV_INTERFACE(netdev), | |
2223 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname), | |
2224 | NULL); | |
2225 | ||
2226 | r = netdev_join(netdev, link, netdev_join_handler); | |
7951dea2 | 2227 | if (r < 0) { |
f2341e0a LP |
2228 | log_struct_errno(LOG_WARNING, r, |
2229 | LOG_LINK_INTERFACE(link), | |
2230 | LOG_NETDEV_INTERFACE(netdev), | |
2231 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname), | |
2232 | NULL); | |
326cb406 SS |
2233 | link_enter_failed(link); |
2234 | return r; | |
2235 | } | |
2236 | ||
313cefa1 | 2237 | link->enslaving++; |
326cb406 SS |
2238 | } |
2239 | ||
ef1ba606 TG |
2240 | return 0; |
2241 | } | |
2242 | ||
769d324c | 2243 | static int link_set_ipv4_forward(Link *link) { |
5a8bcb67 LP |
2244 | int r; |
2245 | ||
765afd5c | 2246 | if (!link_ipv4_forward_enabled(link)) |
15dee3f0 LP |
2247 | return 0; |
2248 | ||
765afd5c LP |
2249 | /* We propagate the forwarding flag from one interface to the |
2250 | * global setting one way. This means: as long as at least one | |
2251 | * interface was configured at any time that had IP forwarding | |
2252 | * enabled the setting will stay on for good. We do this | |
2253 | * primarily to keep IPv4 and IPv6 packet forwarding behaviour | |
2254 | * somewhat in sync (see below). */ | |
15dee3f0 | 2255 | |
765afd5c | 2256 | r = write_string_file("/proc/sys/net/ipv4/ip_forward", "1", WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
eb3da901 | 2257 | if (r < 0) |
765afd5c | 2258 | log_link_warning_errno(link, r, "Cannot turn on IPv4 packet forwarding, ignoring: %m"); |
43c6d5ab | 2259 | |
769d324c LP |
2260 | return 0; |
2261 | } | |
2262 | ||
2263 | static int link_set_ipv6_forward(Link *link) { | |
769d324c LP |
2264 | int r; |
2265 | ||
765afd5c | 2266 | if (!link_ipv6_forward_enabled(link)) |
8add5f79 NO |
2267 | return 0; |
2268 | ||
61233823 | 2269 | /* On Linux, the IPv6 stack does not know a per-interface |
765afd5c LP |
2270 | * packet forwarding setting: either packet forwarding is on |
2271 | * for all, or off for all. We hence don't bother with a | |
2272 | * per-interface setting, but simply propagate the interface | |
2273 | * flag, if it is set, to the global flag, one-way. Note that | |
2274 | * while IPv4 would allow a per-interface flag, we expose the | |
2275 | * same behaviour there and also propagate the setting from | |
2276 | * one to all, to keep things simple (see above). */ | |
15dee3f0 | 2277 | |
765afd5c | 2278 | r = write_string_file("/proc/sys/net/ipv6/conf/all/forwarding", "1", WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
eb3da901 | 2279 | if (r < 0) |
765afd5c | 2280 | log_link_warning_errno(link, r, "Cannot configure IPv6 packet forwarding, ignoring: %m"); |
5a8bcb67 LP |
2281 | |
2282 | return 0; | |
2283 | } | |
2284 | ||
49092e22 | 2285 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 LP |
2286 | char buf[DECIMAL_STR_MAX(unsigned) + 1]; |
2287 | IPv6PrivacyExtensions s; | |
49092e22 SS |
2288 | const char *p = NULL; |
2289 | int r; | |
2290 | ||
1f0d9695 | 2291 | s = link_ipv6_privacy_extensions(link); |
66a6bd68 | 2292 | if (s < 0) |
49092e22 SS |
2293 | return 0; |
2294 | ||
2295 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/use_tempaddr"); | |
66a6bd68 | 2296 | xsprintf(buf, "%u", (unsigned) link->network->ipv6_privacy_extensions); |
49092e22 | 2297 | |
eb3da901 LP |
2298 | r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
2299 | if (r < 0) | |
49092e22 SS |
2300 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
2301 | ||
2302 | return 0; | |
2303 | } | |
2304 | ||
4f2e437a | 2305 | static int link_set_ipv6_accept_ra(Link *link) { |
3b015d40 | 2306 | const char *p = NULL; |
4f2e437a SS |
2307 | int r; |
2308 | ||
2309 | /* Make this a NOP if IPv6 is not available */ | |
2310 | if (!socket_ipv6_is_supported()) | |
2311 | return 0; | |
2312 | ||
2313 | if (link->flags & IFF_LOOPBACK) | |
2314 | return 0; | |
2315 | ||
d68e2e59 LP |
2316 | if (!link->network) |
2317 | return 0; | |
2318 | ||
4f2e437a | 2319 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); |
4f2e437a | 2320 | |
0053598f | 2321 | /* We handle router advertisements ourselves, tell the kernel to GTFO */ |
fe307276 | 2322 | r = write_string_file(p, "0", WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
eb3da901 | 2323 | if (r < 0) |
fe307276 | 2324 | log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface: %m"); |
4f2e437a SS |
2325 | |
2326 | return 0; | |
2327 | } | |
2328 | ||
8749cbcd | 2329 | static int link_set_ipv6_dad_transmits(Link *link) { |
66a6bd68 | 2330 | char buf[DECIMAL_STR_MAX(int) + 1]; |
8749cbcd SS |
2331 | const char *p = NULL; |
2332 | int r; | |
2333 | ||
2334 | /* Make this a NOP if IPv6 is not available */ | |
2335 | if (!socket_ipv6_is_supported()) | |
2336 | return 0; | |
2337 | ||
2338 | if (link->flags & IFF_LOOPBACK) | |
2339 | return 0; | |
2340 | ||
d68e2e59 LP |
2341 | if (!link->network) |
2342 | return 0; | |
2343 | ||
8749cbcd SS |
2344 | if (link->network->ipv6_dad_transmits < 0) |
2345 | return 0; | |
2346 | ||
2347 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); | |
66a6bd68 | 2348 | xsprintf(buf, "%i", link->network->ipv6_dad_transmits); |
8749cbcd | 2349 | |
eb3da901 LP |
2350 | r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
2351 | if (r < 0) | |
8749cbcd | 2352 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); |
8749cbcd SS |
2353 | |
2354 | return 0; | |
2355 | } | |
2356 | ||
b69c3180 | 2357 | static int link_set_ipv6_hop_limit(Link *link) { |
66a6bd68 | 2358 | char buf[DECIMAL_STR_MAX(int) + 1]; |
b69c3180 SS |
2359 | const char *p = NULL; |
2360 | int r; | |
2361 | ||
2362 | /* Make this a NOP if IPv6 is not available */ | |
2363 | if (!socket_ipv6_is_supported()) | |
2364 | return 0; | |
2365 | ||
2366 | if (link->flags & IFF_LOOPBACK) | |
2367 | return 0; | |
2368 | ||
d68e2e59 LP |
2369 | if (!link->network) |
2370 | return 0; | |
2371 | ||
b69c3180 SS |
2372 | if (link->network->ipv6_hop_limit < 0) |
2373 | return 0; | |
2374 | ||
2375 | p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/hop_limit"); | |
66a6bd68 | 2376 | xsprintf(buf, "%i", link->network->ipv6_hop_limit); |
b69c3180 | 2377 | |
eb3da901 LP |
2378 | r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE); |
2379 | if (r < 0) | |
b69c3180 | 2380 | log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m"); |
b69c3180 SS |
2381 | |
2382 | return 0; | |
2383 | } | |
2384 | ||
5e5b137a TG |
2385 | static int link_drop_foreign_config(Link *link) { |
2386 | Address *address; | |
2387 | Route *route; | |
2388 | Iterator i; | |
2389 | int r; | |
2390 | ||
2391 | SET_FOREACH(address, link->addresses_foreign, i) { | |
fe307276 | 2392 | /* we consider IPv6LL addresses to be managed by the kernel */ |
5e5b137a TG |
2393 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1) |
2394 | continue; | |
2395 | ||
2396 | r = address_remove(address, link, link_address_remove_handler); | |
2397 | if (r < 0) | |
2398 | return r; | |
2399 | } | |
2400 | ||
2401 | SET_FOREACH(route, link->routes_foreign, i) { | |
fe307276 | 2402 | /* do not touch routes managed by the kernel */ |
5e5b137a TG |
2403 | if (route->protocol == RTPROT_KERNEL) |
2404 | continue; | |
2405 | ||
3fb1ac5d | 2406 | r = route_remove(route, link, link_route_remove_handler); |
5e5b137a TG |
2407 | if (r < 0) |
2408 | return r; | |
2409 | } | |
2410 | ||
2411 | return 0; | |
2412 | } | |
2413 | ||
3104883d SS |
2414 | static int link_drop_config(Link *link) { |
2415 | Address *address; | |
2416 | Route *route; | |
2417 | Iterator i; | |
2418 | int r; | |
2419 | ||
2420 | SET_FOREACH(address, link->addresses, i) { | |
2421 | /* we consider IPv6LL addresses to be managed by the kernel */ | |
2422 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1) | |
2423 | continue; | |
2424 | ||
2425 | r = address_remove(address, link, link_address_remove_handler); | |
2426 | if (r < 0) | |
2427 | return r; | |
2428 | } | |
2429 | ||
2430 | SET_FOREACH(route, link->routes, i) { | |
2431 | /* do not touch routes managed by the kernel */ | |
2432 | if (route->protocol == RTPROT_KERNEL) | |
2433 | continue; | |
2434 | ||
2435 | r = route_remove(route, link, link_route_remove_handler); | |
2436 | if (r < 0) | |
2437 | return r; | |
2438 | } | |
2439 | ||
c69305ff LP |
2440 | ndisc_flush(link); |
2441 | ||
3104883d SS |
2442 | return 0; |
2443 | } | |
2444 | ||
273eec24 LP |
2445 | static int link_update_lldp(Link *link) { |
2446 | int r; | |
2447 | ||
2448 | assert(link); | |
2449 | ||
2450 | if (!link->lldp) | |
2451 | return 0; | |
2452 | ||
2453 | if (link->flags & IFF_UP) { | |
2454 | r = sd_lldp_start(link->lldp); | |
2455 | if (r > 0) | |
2456 | log_link_debug(link, "Started LLDP."); | |
2457 | } else { | |
2458 | r = sd_lldp_stop(link->lldp); | |
2459 | if (r > 0) | |
2460 | log_link_debug(link, "Stopped LLDP."); | |
2461 | } | |
2462 | ||
2463 | return r; | |
2464 | } | |
2465 | ||
a748b692 | 2466 | static int link_configure(Link *link) { |
02b59d57 TG |
2467 | int r; |
2468 | ||
ef1ba606 | 2469 | assert(link); |
b22d8a00 | 2470 | assert(link->network); |
8434fd5c | 2471 | assert(link->state == LINK_STATE_PENDING); |
a748b692 | 2472 | |
92c918b0 SS |
2473 | if (streq_ptr(link->kind, "vcan")) { |
2474 | ||
2475 | if (!(link->flags & IFF_UP)) { | |
2476 | r = link_up_can(link); | |
2477 | if (r < 0) { | |
2478 | link_enter_failed(link); | |
2479 | return r; | |
2480 | } | |
2481 | } | |
2482 | ||
2483 | return 0; | |
2484 | } | |
2485 | ||
02e28621 ДГ |
2486 | /* Drop foreign config, but ignore loopback or critical devices. |
2487 | * We do not want to remove loopback address or addresses used for root NFS. */ | |
2488 | if (!(link->flags & IFF_LOOPBACK) && !(link->network->dhcp_critical)) { | |
e5d44b34 CH |
2489 | r = link_drop_foreign_config(link); |
2490 | if (r < 0) | |
2491 | return r; | |
2492 | } | |
5e5b137a | 2493 | |
23d8b221 SS |
2494 | r = link_set_proxy_arp(link); |
2495 | if (r < 0) | |
2496 | return r; | |
2497 | ||
a0e5c15d FK |
2498 | r = ipv6_proxy_ndp_addresses_configure(link); |
2499 | if (r < 0) | |
2500 | return r; | |
2501 | ||
769d324c LP |
2502 | r = link_set_ipv4_forward(link); |
2503 | if (r < 0) | |
2504 | return r; | |
2505 | ||
2506 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
2507 | if (r < 0) |
2508 | return r; | |
2509 | ||
49092e22 SS |
2510 | r = link_set_ipv6_privacy_extensions(link); |
2511 | if (r < 0) | |
2512 | return r; | |
2513 | ||
4f2e437a SS |
2514 | r = link_set_ipv6_accept_ra(link); |
2515 | if (r < 0) | |
2516 | return r; | |
2517 | ||
8749cbcd SS |
2518 | r = link_set_ipv6_dad_transmits(link); |
2519 | if (r < 0) | |
2520 | return r; | |
b69c3180 SS |
2521 | |
2522 | r = link_set_ipv6_hop_limit(link); | |
2523 | if (r < 0) | |
2524 | return r; | |
8749cbcd | 2525 | |
99d2baa2 SS |
2526 | r = link_set_flags(link); |
2527 | if (r < 0) | |
2528 | return r; | |
2529 | ||
78c958f8 | 2530 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 2531 | r = ipv4ll_configure(link); |
eb34d4af TG |
2532 | if (r < 0) |
2533 | return r; | |
2534 | } | |
2535 | ||
78c958f8 | 2536 | if (link_dhcp4_enabled(link)) { |
3c9b8860 | 2537 | r = dhcp4_configure(link); |
eb34d4af TG |
2538 | if (r < 0) |
2539 | return r; | |
eb34d4af TG |
2540 | } |
2541 | ||
78c958f8 | 2542 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
2543 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
2544 | if (r < 0) | |
2545 | return r; | |
2546 | ||
2547 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
2548 | if (r < 0) | |
2549 | return r; | |
dd43110f TG |
2550 | } |
2551 | ||
62379e88 TG |
2552 | if (link_dhcp6_enabled(link) || |
2553 | link_ipv6_accept_ra_enabled(link)) { | |
f5a8c43f TG |
2554 | r = dhcp6_configure(link); |
2555 | if (r < 0) | |
2556 | return r; | |
2557 | } | |
2558 | ||
2559 | if (link_ipv6_accept_ra_enabled(link)) { | |
de1e9928 | 2560 | r = ndisc_configure(link); |
4138fb2c PF |
2561 | if (r < 0) |
2562 | return r; | |
2563 | } | |
2564 | ||
8e1ad1ea | 2565 | if (link_lldp_rx_enabled(link)) { |
fc6a313b LP |
2566 | r = sd_lldp_new(&link->lldp); |
2567 | if (r < 0) | |
2568 | return r; | |
2569 | ||
2570 | r = sd_lldp_set_ifindex(link->lldp, link->ifindex); | |
34437b4f LP |
2571 | if (r < 0) |
2572 | return r; | |
2573 | ||
2574 | r = sd_lldp_match_capabilities(link->lldp, | |
2575 | link->network->lldp_mode == LLDP_MODE_ROUTERS_ONLY ? | |
6afa6767 BG |
2576 | SD_LLDP_SYSTEM_CAPABILITIES_ALL_ROUTERS : |
2577 | SD_LLDP_SYSTEM_CAPABILITIES_ALL); | |
ce43e484 SS |
2578 | if (r < 0) |
2579 | return r; | |
2580 | ||
b553a6b1 LP |
2581 | r = sd_lldp_set_filter_address(link->lldp, &link->mac); |
2582 | if (r < 0) | |
2583 | return r; | |
2584 | ||
ce43e484 SS |
2585 | r = sd_lldp_attach_event(link->lldp, NULL, 0); |
2586 | if (r < 0) | |
2587 | return r; | |
49699bac | 2588 | |
032b27f5 | 2589 | r = sd_lldp_set_callback(link->lldp, lldp_handler, link); |
49699bac SS |
2590 | if (r < 0) |
2591 | return r; | |
273eec24 LP |
2592 | |
2593 | r = link_update_lldp(link); | |
2594 | if (r < 0) | |
2595 | return r; | |
ce43e484 SS |
2596 | } |
2597 | ||
a61bb41c | 2598 | if (link_has_carrier(link)) { |
1e9be60b TG |
2599 | r = link_acquire_conf(link); |
2600 | if (r < 0) | |
2601 | return r; | |
cc544d5f | 2602 | } |
1e9be60b | 2603 | |
3f265037 | 2604 | return link_enter_join_netdev(link); |
505f8da7 TG |
2605 | } |
2606 | ||
1c4baffc | 2607 | static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, |
3c9b8860 | 2608 | void *userdata) { |
5da8149f | 2609 | _cleanup_link_unref_ Link *link = userdata; |
505f8da7 | 2610 | Network *network; |
505f8da7 TG |
2611 | int r; |
2612 | ||
2613 | assert(link); | |
2614 | assert(link->ifname); | |
2615 | assert(link->manager); | |
2616 | ||
8434fd5c | 2617 | if (link->state != LINK_STATE_PENDING) |
5da8149f | 2618 | return 1; |
505f8da7 | 2619 | |
6a7a4e4d | 2620 | log_link_debug(link, "Link state is up-to-date"); |
505f8da7 | 2621 | |
0d4ad91d AR |
2622 | r = link_new_bound_by_list(link); |
2623 | if (r < 0) | |
2624 | return r; | |
2625 | ||
2626 | r = link_handle_bound_by_list(link); | |
2627 | if (r < 0) | |
2628 | return r; | |
2629 | ||
c4a03a56 TG |
2630 | if (!link->network) { |
2631 | r = network_get(link->manager, link->udev_device, link->ifname, | |
2632 | &link->mac, &network); | |
2633 | if (r == -ENOENT) { | |
2634 | link_enter_unmanaged(link); | |
2635 | return 1; | |
a09dc546 DM |
2636 | } else if (r == 0 && network->unmanaged) { |
2637 | link_enter_unmanaged(link); | |
2638 | return 0; | |
c4a03a56 TG |
2639 | } else if (r < 0) |
2640 | return r; | |
505f8da7 | 2641 | |
c4a03a56 TG |
2642 | if (link->flags & IFF_LOOPBACK) { |
2643 | if (network->link_local != ADDRESS_FAMILY_NO) | |
2644 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 2645 | |
c4a03a56 TG |
2646 | if (network->dhcp != ADDRESS_FAMILY_NO) |
2647 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 2648 | |
c4a03a56 TG |
2649 | if (network->dhcp_server) |
2650 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
2651 | } | |
bd2efe92 | 2652 | |
7d342c03 | 2653 | r = network_apply(network, link); |
c4a03a56 TG |
2654 | if (r < 0) |
2655 | return r; | |
2656 | } | |
505f8da7 | 2657 | |
0d4ad91d AR |
2658 | r = link_new_bound_to_list(link); |
2659 | if (r < 0) | |
2660 | return r; | |
2661 | ||
a748b692 TG |
2662 | r = link_configure(link); |
2663 | if (r < 0) | |
2664 | return r; | |
2665 | ||
5da8149f | 2666 | return 1; |
505f8da7 TG |
2667 | } |
2668 | ||
4f561e8e | 2669 | int link_initialized(Link *link, struct udev_device *device) { |
4afd3348 | 2670 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f561e8e TG |
2671 | int r; |
2672 | ||
2673 | assert(link); | |
2674 | assert(link->manager); | |
2675 | assert(link->manager->rtnl); | |
2676 | assert(device); | |
2677 | ||
8434fd5c | 2678 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2679 | return 0; |
2680 | ||
679b3605 TG |
2681 | if (link->udev_device) |
2682 | return 0; | |
2683 | ||
79008bdd | 2684 | log_link_debug(link, "udev initialized link"); |
4f561e8e TG |
2685 | |
2686 | link->udev_device = udev_device_ref(device); | |
2687 | ||
3c9b8860 TG |
2688 | /* udev has initialized the link, but we don't know if we have yet |
2689 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2690 | * when it returns we know that the pending NEWLINKs have already been | |
2691 | * processed and that we are up-to-date */ | |
4f561e8e | 2692 | |
3c9b8860 TG |
2693 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2694 | link->ifindex); | |
4f561e8e TG |
2695 | if (r < 0) |
2696 | return r; | |
2697 | ||
1c4baffc | 2698 | r = sd_netlink_call_async(link->manager->rtnl, req, |
3c9b8860 | 2699 | link_initialized_and_synced, link, 0, NULL); |
4f561e8e TG |
2700 | if (r < 0) |
2701 | return r; | |
2702 | ||
5da8149f TG |
2703 | link_ref(link); |
2704 | ||
4f561e8e TG |
2705 | return 0; |
2706 | } | |
2707 | ||
c4a03a56 | 2708 | static int link_load(Link *link) { |
0bc70f1d TG |
2709 | _cleanup_free_ char *network_file = NULL, |
2710 | *addresses = NULL, | |
f703cc2c | 2711 | *routes = NULL, |
0bc70f1d TG |
2712 | *dhcp4_address = NULL, |
2713 | *ipv4ll_address = NULL; | |
2714 | union in_addr_union address; | |
f703cc2c | 2715 | union in_addr_union route_dst; |
c598ac76 | 2716 | const char *p; |
c4a03a56 TG |
2717 | int r; |
2718 | ||
2719 | assert(link); | |
2720 | ||
2721 | r = parse_env_file(link->state_file, NEWLINE, | |
2722 | "NETWORK_FILE", &network_file, | |
2723 | "ADDRESSES", &addresses, | |
f703cc2c | 2724 | "ROUTES", &routes, |
0bc70f1d TG |
2725 | "DHCP4_ADDRESS", &dhcp4_address, |
2726 | "IPV4LL_ADDRESS", &ipv4ll_address, | |
c4a03a56 TG |
2727 | NULL); |
2728 | if (r < 0 && r != -ENOENT) | |
2729 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
2730 | ||
2731 | if (network_file) { | |
2732 | Network *network; | |
2733 | char *suffix; | |
2734 | ||
2735 | /* drop suffix */ | |
2736 | suffix = strrchr(network_file, '.'); | |
2737 | if (!suffix) { | |
2738 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
2739 | goto network_file_fail; | |
2740 | } | |
2741 | *suffix = '\0'; | |
2742 | ||
2743 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
2744 | if (r < 0) { | |
2745 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
2746 | goto network_file_fail; | |
2747 | } | |
2748 | ||
7d342c03 | 2749 | r = network_apply(network, link); |
c4a03a56 TG |
2750 | if (r < 0) |
2751 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
2752 | } | |
2753 | ||
2754 | network_file_fail: | |
2755 | ||
2756 | if (addresses) { | |
c598ac76 | 2757 | p = addresses; |
c4a03a56 | 2758 | |
c598ac76 TG |
2759 | for (;;) { |
2760 | _cleanup_free_ char *address_str = NULL; | |
c4a03a56 TG |
2761 | char *prefixlen_str; |
2762 | int family; | |
2763 | unsigned char prefixlen; | |
c4a03a56 | 2764 | |
c598ac76 TG |
2765 | r = extract_first_word(&p, &address_str, NULL, 0); |
2766 | if (r < 0) { | |
2767 | log_link_debug_errno(link, r, "Failed to extract next address string: %m"); | |
2768 | continue; | |
928bc597 TA |
2769 | } |
2770 | if (r == 0) | |
c598ac76 TG |
2771 | break; |
2772 | ||
2773 | prefixlen_str = strchr(address_str, '/'); | |
c4a03a56 | 2774 | if (!prefixlen_str) { |
c598ac76 | 2775 | log_link_debug(link, "Failed to parse address and prefix length %s", address_str); |
c4a03a56 TG |
2776 | continue; |
2777 | } | |
2778 | ||
313cefa1 | 2779 | *prefixlen_str++ = '\0'; |
c4a03a56 TG |
2780 | |
2781 | r = sscanf(prefixlen_str, "%hhu", &prefixlen); | |
2782 | if (r != 1) { | |
2783 | log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str); | |
2784 | continue; | |
2785 | } | |
2786 | ||
c598ac76 | 2787 | r = in_addr_from_string_auto(address_str, &family, &address); |
c4a03a56 | 2788 | if (r < 0) { |
c598ac76 | 2789 | log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str); |
c4a03a56 TG |
2790 | continue; |
2791 | } | |
2792 | ||
2793 | r = address_add(link, family, &address, prefixlen, NULL); | |
2794 | if (r < 0) | |
2795 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
2796 | } | |
2797 | } | |
2798 | ||
f703cc2c | 2799 | if (routes) { |
74544b4e TA |
2800 | p = routes; |
2801 | ||
c598ac76 | 2802 | for (;;) { |
f833694d | 2803 | Route *route; |
c598ac76 | 2804 | _cleanup_free_ char *route_str = NULL; |
4afd3348 | 2805 | _cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL; |
f833694d | 2806 | usec_t lifetime; |
f703cc2c TG |
2807 | char *prefixlen_str; |
2808 | int family; | |
2809 | unsigned char prefixlen, tos, table; | |
2810 | uint32_t priority; | |
2811 | ||
c598ac76 TG |
2812 | r = extract_first_word(&p, &route_str, NULL, 0); |
2813 | if (r < 0) { | |
2814 | log_link_debug_errno(link, r, "Failed to extract next route string: %m"); | |
2815 | continue; | |
928bc597 TA |
2816 | } |
2817 | if (r == 0) | |
c598ac76 TG |
2818 | break; |
2819 | ||
2820 | prefixlen_str = strchr(route_str, '/'); | |
f703cc2c | 2821 | if (!prefixlen_str) { |
c598ac76 | 2822 | log_link_debug(link, "Failed to parse route %s", route_str); |
f703cc2c TG |
2823 | continue; |
2824 | } | |
2825 | ||
313cefa1 | 2826 | *prefixlen_str++ = '\0'; |
f703cc2c | 2827 | |
f833694d TG |
2828 | r = sscanf(prefixlen_str, "%hhu/%hhu/%"SCNu32"/%hhu/"USEC_FMT, &prefixlen, &tos, &priority, &table, &lifetime); |
2829 | if (r != 5) { | |
2830 | log_link_debug(link, | |
2831 | "Failed to parse destination prefix length, tos, priority, table or expiration %s", | |
2832 | prefixlen_str); | |
f703cc2c TG |
2833 | continue; |
2834 | } | |
2835 | ||
c598ac76 | 2836 | r = in_addr_from_string_auto(route_str, &family, &route_dst); |
f703cc2c | 2837 | if (r < 0) { |
c598ac76 | 2838 | log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str); |
f703cc2c TG |
2839 | continue; |
2840 | } | |
2841 | ||
f833694d | 2842 | r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route); |
f703cc2c TG |
2843 | if (r < 0) |
2844 | return log_link_error_errno(link, r, "Failed to add route: %m"); | |
f833694d TG |
2845 | |
2846 | if (lifetime != USEC_INFINITY) { | |
2847 | r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), lifetime, | |
2848 | 0, route_expire_handler, route); | |
2849 | if (r < 0) | |
2850 | log_link_warning_errno(link, r, "Could not arm route expiration handler: %m"); | |
2851 | } | |
2852 | ||
2853 | route->lifetime = lifetime; | |
2854 | sd_event_source_unref(route->expire); | |
2855 | route->expire = expire; | |
2856 | expire = NULL; | |
f703cc2c TG |
2857 | } |
2858 | } | |
2859 | ||
0bc70f1d TG |
2860 | if (dhcp4_address) { |
2861 | r = in_addr_from_string(AF_INET, dhcp4_address, &address); | |
2862 | if (r < 0) { | |
b68d26b8 | 2863 | log_link_debug_errno(link, r, "Failed to parse DHCPv4 address %s: %m", dhcp4_address); |
0bc70f1d TG |
2864 | goto dhcp4_address_fail; |
2865 | } | |
2866 | ||
2867 | r = sd_dhcp_client_new(&link->dhcp_client); | |
2868 | if (r < 0) | |
b68d26b8 | 2869 | return log_link_error_errno(link, r, "Failed to create DHCPv4 client: %m"); |
0bc70f1d TG |
2870 | |
2871 | r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in); | |
2872 | if (r < 0) | |
b68d26b8 | 2873 | return log_link_error_errno(link, r, "Failed to set initial DHCPv4 address %s: %m", dhcp4_address); |
0bc70f1d TG |
2874 | } |
2875 | ||
2876 | dhcp4_address_fail: | |
2877 | ||
2878 | if (ipv4ll_address) { | |
2879 | r = in_addr_from_string(AF_INET, ipv4ll_address, &address); | |
2880 | if (r < 0) { | |
b68d26b8 | 2881 | log_link_debug_errno(link, r, "Failed to parse IPv4LL address %s: %m", ipv4ll_address); |
0bc70f1d TG |
2882 | goto ipv4ll_address_fail; |
2883 | } | |
2884 | ||
2885 | r = sd_ipv4ll_new(&link->ipv4ll); | |
2886 | if (r < 0) | |
b68d26b8 | 2887 | return log_link_error_errno(link, r, "Failed to create IPv4LL client: %m"); |
0bc70f1d TG |
2888 | |
2889 | r = sd_ipv4ll_set_address(link->ipv4ll, &address.in); | |
2890 | if (r < 0) | |
b68d26b8 | 2891 | return log_link_error_errno(link, r, "Failed to set initial IPv4LL address %s: %m", ipv4ll_address); |
0bc70f1d TG |
2892 | } |
2893 | ||
2894 | ipv4ll_address_fail: | |
2895 | ||
c4a03a56 TG |
2896 | return 0; |
2897 | } | |
2898 | ||
1c4baffc | 2899 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
505f8da7 TG |
2900 | Link *link; |
2901 | _cleanup_udev_device_unref_ struct udev_device *device = NULL; | |
2902 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; | |
2903 | int r; | |
2904 | ||
2905 | assert(m); | |
fbbeb65a | 2906 | assert(m->rtnl); |
505f8da7 TG |
2907 | assert(message); |
2908 | assert(ret); | |
2909 | ||
2910 | r = link_new(m, message, ret); | |
2911 | if (r < 0) | |
2912 | return r; | |
2913 | ||
2914 | link = *ret; | |
2915 | ||
6a7a4e4d | 2916 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2917 | |
c4a03a56 TG |
2918 | r = link_load(link); |
2919 | if (r < 0) | |
2920 | return r; | |
2921 | ||
75f86906 | 2922 | if (detect_container() <= 0) { |
505f8da7 | 2923 | /* not in a container, udev will be around */ |
ae06ab10 | 2924 | sprintf(ifindex_str, "n%d", link->ifindex); |
505f8da7 | 2925 | device = udev_device_new_from_device_id(m->udev, ifindex_str); |
5c416fc4 TG |
2926 | if (!device) { |
2927 | r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); | |
2928 | goto failed; | |
2929 | } | |
505f8da7 | 2930 | |
3c4cb064 | 2931 | if (udev_device_get_is_initialized(device) <= 0) { |
505f8da7 | 2932 | /* not yet ready */ |
79008bdd | 2933 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2934 | return 0; |
3c4cb064 | 2935 | } |
505f8da7 | 2936 | |
4f561e8e TG |
2937 | r = link_initialized(link, device); |
2938 | if (r < 0) | |
5c416fc4 | 2939 | goto failed; |
4f561e8e | 2940 | } else { |
5da8149f TG |
2941 | /* we are calling a callback directly, so must take a ref */ |
2942 | link_ref(link); | |
2943 | ||
4f561e8e TG |
2944 | r = link_initialized_and_synced(m->rtnl, NULL, link); |
2945 | if (r < 0) | |
5c416fc4 | 2946 | goto failed; |
4f561e8e | 2947 | } |
505f8da7 | 2948 | |
a748b692 | 2949 | return 0; |
5c416fc4 TG |
2950 | failed: |
2951 | link_enter_failed(link); | |
2952 | return r; | |
a748b692 TG |
2953 | } |
2954 | ||
c601ebf7 | 2955 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
e7ab854c TG |
2956 | int r; |
2957 | ||
2958 | assert(link); | |
2959 | ||
2960 | log_link_info(link, "Gained IPv6LL"); | |
2961 | ||
c601ebf7 | 2962 | link->ipv6ll_address = *address; |
e7ab854c TG |
2963 | link_check_ready(link); |
2964 | ||
201f0c91 | 2965 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_UNMANAGED, LINK_STATE_FAILED)) { |
e7ab854c TG |
2966 | r = link_acquire_ipv6_conf(link); |
2967 | if (r < 0) { | |
2968 | link_enter_failed(link); | |
2969 | return r; | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | return 0; | |
2974 | } | |
2975 | ||
9c0a72f9 TG |
2976 | static int link_carrier_gained(Link *link) { |
2977 | int r; | |
2978 | ||
2979 | assert(link); | |
2980 | ||
201f0c91 | 2981 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_UNMANAGED, LINK_STATE_FAILED)) { |
9c0a72f9 TG |
2982 | r = link_acquire_conf(link); |
2983 | if (r < 0) { | |
2984 | link_enter_failed(link); | |
2985 | return r; | |
2986 | } | |
6fc25497 SS |
2987 | |
2988 | r = link_enter_set_addresses(link); | |
2989 | if (r < 0) | |
2990 | return r; | |
9c0a72f9 TG |
2991 | } |
2992 | ||
0d4ad91d AR |
2993 | r = link_handle_bound_by_list(link); |
2994 | if (r < 0) | |
2995 | return r; | |
2996 | ||
9c0a72f9 TG |
2997 | return 0; |
2998 | } | |
2999 | ||
3000 | static int link_carrier_lost(Link *link) { | |
3001 | int r; | |
3002 | ||
3003 | assert(link); | |
3004 | ||
3005 | r = link_stop_clients(link); | |
3006 | if (r < 0) { | |
3007 | link_enter_failed(link); | |
3008 | return r; | |
3009 | } | |
3010 | ||
3104883d SS |
3011 | r = link_drop_config(link); |
3012 | if (r < 0) | |
3013 | return r; | |
3014 | ||
f258e948 MP |
3015 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING)) { |
3016 | log_link_debug(link, "State is %s, dropping config", link_state_to_string(link->state)); | |
c436d553 MM |
3017 | r = link_drop_foreign_config(link); |
3018 | if (r < 0) | |
3019 | return r; | |
3020 | } | |
3104883d | 3021 | |
0d4ad91d AR |
3022 | r = link_handle_bound_by_list(link); |
3023 | if (r < 0) | |
3024 | return r; | |
3025 | ||
9c0a72f9 TG |
3026 | return 0; |
3027 | } | |
3028 | ||
3029 | int link_carrier_reset(Link *link) { | |
3030 | int r; | |
3031 | ||
3032 | assert(link); | |
3033 | ||
3034 | if (link_has_carrier(link)) { | |
3035 | r = link_carrier_lost(link); | |
3036 | if (r < 0) | |
3037 | return r; | |
3038 | ||
3039 | r = link_carrier_gained(link); | |
3040 | if (r < 0) | |
3041 | return r; | |
3042 | ||
6a7a4e4d | 3043 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
3044 | } |
3045 | ||
3046 | return 0; | |
3047 | } | |
3048 | ||
1c4baffc | 3049 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 3050 | struct ether_addr mac; |
ca4e095a | 3051 | const char *ifname; |
afe7fd56 | 3052 | uint32_t mtu; |
a61bb41c | 3053 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
3054 | int r; |
3055 | ||
dd3efc09 | 3056 | assert(link); |
b8941f74 | 3057 | assert(link->ifname); |
22936833 TG |
3058 | assert(m); |
3059 | ||
7619683b TG |
3060 | if (link->state == LINK_STATE_LINGER) { |
3061 | link_ref(link); | |
6a7a4e4d | 3062 | log_link_info(link, "Link readded"); |
e331e246 | 3063 | link_set_state(link, LINK_STATE_ENSLAVING); |
0d4ad91d AR |
3064 | |
3065 | r = link_new_carrier_maps(link); | |
3066 | if (r < 0) | |
3067 | return r; | |
7619683b TG |
3068 | } |
3069 | ||
1c4baffc | 3070 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 3071 | if (r >= 0 && !streq(ifname, link->ifname)) { |
6a7a4e4d | 3072 | log_link_info(link, "Renamed to %s", ifname); |
b8941f74 | 3073 | |
0d4ad91d AR |
3074 | link_free_carrier_maps(link); |
3075 | ||
2fc09a9c DM |
3076 | r = free_and_strdup(&link->ifname, ifname); |
3077 | if (r < 0) | |
3078 | return r; | |
0d4ad91d AR |
3079 | |
3080 | r = link_new_carrier_maps(link); | |
3081 | if (r < 0) | |
3082 | return r; | |
b8941f74 TG |
3083 | } |
3084 | ||
1c4baffc | 3085 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
3086 | if (r >= 0 && mtu > 0) { |
3087 | link->mtu = mtu; | |
3088 | if (!link->original_mtu) { | |
3089 | link->original_mtu = mtu; | |
6a7a4e4d | 3090 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
3091 | } |
3092 | ||
3093 | if (link->dhcp_client) { | |
3c9b8860 TG |
3094 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
3095 | link->mtu); | |
afe7fd56 | 3096 | if (r < 0) { |
6a7a4e4d | 3097 | log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); |
afe7fd56 TG |
3098 | return r; |
3099 | } | |
3100 | } | |
9842de0d | 3101 | } |
69629de9 | 3102 | |
e9189a1f TG |
3103 | /* The kernel may broadcast NEWLINK messages without the MAC address |
3104 | set, simply ignore them. */ | |
1c4baffc | 3105 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 3106 | if (r >= 0) { |
3c9b8860 TG |
3107 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
3108 | ETH_ALEN)) { | |
c49b33ac | 3109 | |
3c9b8860 TG |
3110 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
3111 | ETH_ALEN); | |
c49b33ac | 3112 | |
79008bdd | 3113 | log_link_debug(link, "MAC address: " |
20861203 TG |
3114 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
3115 | mac.ether_addr_octet[0], | |
3116 | mac.ether_addr_octet[1], | |
3117 | mac.ether_addr_octet[2], | |
3118 | mac.ether_addr_octet[3], | |
3119 | mac.ether_addr_octet[4], | |
3120 | mac.ether_addr_octet[5]); | |
c49b33ac | 3121 | |
20861203 TG |
3122 | if (link->ipv4ll) { |
3123 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
3124 | if (r < 0) |
3125 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 3126 | } |
c49b33ac | 3127 | |
20861203 | 3128 | if (link->dhcp_client) { |
8341a5c3 ZJS |
3129 | const DUID *duid = link_duid(link); |
3130 | ||
3c9b8860 | 3131 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
3132 | (const uint8_t *) &link->mac, |
3133 | sizeof (link->mac), | |
3134 | ARPHRD_ETHER); | |
6a7a4e4d LP |
3135 | if (r < 0) |
3136 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
413708d1 | 3137 | |
8341a5c3 ZJS |
3138 | r = sd_dhcp_client_set_iaid_duid(link->dhcp_client, |
3139 | link->network->iaid, | |
3140 | duid->type, | |
3141 | duid->raw_data_len > 0 ? duid->raw_data : NULL, | |
3142 | duid->raw_data_len); | |
413708d1 VK |
3143 | if (r < 0) |
3144 | return log_link_warning_errno(link, r, "Could not update DUID/IAID in DHCP client: %m"); | |
c49b33ac | 3145 | } |
4138fb2c PF |
3146 | |
3147 | if (link->dhcp6_client) { | |
8341a5c3 ZJS |
3148 | const DUID* duid = link_duid(link); |
3149 | ||
4138fb2c | 3150 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, |
76253e73 DW |
3151 | (const uint8_t *) &link->mac, |
3152 | sizeof (link->mac), | |
3153 | ARPHRD_ETHER); | |
6a7a4e4d LP |
3154 | if (r < 0) |
3155 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
413708d1 VK |
3156 | |
3157 | r = sd_dhcp6_client_set_iaid(link->dhcp6_client, | |
3158 | link->network->iaid); | |
3159 | if (r < 0) | |
3160 | return log_link_warning_errno(link, r, "Could not update DHCPv6 IAID: %m"); | |
3161 | ||
8341a5c3 ZJS |
3162 | r = sd_dhcp6_client_set_duid(link->dhcp6_client, |
3163 | duid->type, | |
3164 | duid->raw_data_len > 0 ? duid->raw_data : NULL, | |
3165 | duid->raw_data_len); | |
413708d1 VK |
3166 | if (r < 0) |
3167 | return log_link_warning_errno(link, r, "Could not update DHCPv6 DUID: %m"); | |
4138fb2c | 3168 | } |
c49b33ac | 3169 | } |
4f882b2a TG |
3170 | } |
3171 | ||
a61bb41c TG |
3172 | had_carrier = link_has_carrier(link); |
3173 | ||
3174 | r = link_update_flags(link, m); | |
3175 | if (r < 0) | |
3176 | return r; | |
3177 | ||
273eec24 LP |
3178 | r = link_update_lldp(link); |
3179 | if (r < 0) | |
3180 | return r; | |
3181 | ||
a61bb41c TG |
3182 | carrier_gained = !had_carrier && link_has_carrier(link); |
3183 | carrier_lost = had_carrier && !link_has_carrier(link); | |
3184 | ||
3185 | if (carrier_gained) { | |
6a7a4e4d | 3186 | log_link_info(link, "Gained carrier"); |
a61bb41c | 3187 | |
9c0a72f9 TG |
3188 | r = link_carrier_gained(link); |
3189 | if (r < 0) | |
3190 | return r; | |
a61bb41c | 3191 | } else if (carrier_lost) { |
6a7a4e4d | 3192 | log_link_info(link, "Lost carrier"); |
a61bb41c | 3193 | |
9c0a72f9 TG |
3194 | r = link_carrier_lost(link); |
3195 | if (r < 0) | |
a61bb41c | 3196 | return r; |
a61bb41c TG |
3197 | } |
3198 | ||
3199 | return 0; | |
dd3efc09 | 3200 | } |
fe8db0c5 | 3201 | |
b295beea LP |
3202 | static void print_link_hashmap(FILE *f, const char *prefix, Hashmap* h) { |
3203 | bool space = false; | |
3204 | Iterator i; | |
3205 | Link *link; | |
3206 | ||
3207 | assert(f); | |
3208 | assert(prefix); | |
3209 | ||
3210 | if (hashmap_isempty(h)) | |
3211 | return; | |
3212 | ||
3213 | fputs(prefix, f); | |
3214 | HASHMAP_FOREACH(link, h, i) { | |
3215 | if (space) | |
3216 | fputc(' ', f); | |
3217 | ||
3218 | fprintf(f, "%i", link->ifindex); | |
3219 | space = true; | |
3220 | } | |
3221 | ||
3222 | fputc('\n', f); | |
3223 | } | |
3224 | ||
fe8db0c5 | 3225 | int link_save(Link *link) { |
68a8723c | 3226 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 3227 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 3228 | const char *admin_state, *oper_state; |
e7780c8d | 3229 | Address *a; |
c1eb9872 | 3230 | Route *route; |
e7780c8d | 3231 | Iterator i; |
fe8db0c5 TG |
3232 | int r; |
3233 | ||
3234 | assert(link); | |
3235 | assert(link->state_file); | |
68a8723c | 3236 | assert(link->lease_file); |
bbf7c048 TG |
3237 | assert(link->manager); |
3238 | ||
370e9930 TG |
3239 | if (link->state == LINK_STATE_LINGER) { |
3240 | unlink(link->state_file); | |
3241 | return 0; | |
3242 | } | |
3243 | ||
34437b4f LP |
3244 | link_lldp_save(link); |
3245 | ||
deb2e523 TG |
3246 | admin_state = link_state_to_string(link->state); |
3247 | assert(admin_state); | |
3248 | ||
e375dcde TG |
3249 | oper_state = link_operstate_to_string(link->operstate); |
3250 | assert(oper_state); | |
deb2e523 | 3251 | |
fe8db0c5 TG |
3252 | r = fopen_temporary(link->state_file, &f, &temp_path); |
3253 | if (r < 0) | |
6a7a4e4d | 3254 | goto fail; |
fe8db0c5 | 3255 | |
5512a963 | 3256 | (void) fchmod(fileno(f), 0644); |
fe8db0c5 TG |
3257 | |
3258 | fprintf(f, | |
3259 | "# This is private data. Do not parse.\n" | |
deb2e523 | 3260 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
3261 | "OPER_STATE=%s\n", |
3262 | admin_state, oper_state); | |
fe8db0c5 | 3263 | |
bcb7a07e | 3264 | if (link->network) { |
ea352b40 | 3265 | bool space; |
07bdc70d | 3266 | sd_dhcp6_lease *dhcp6_lease = NULL; |
b2a81c0b LP |
3267 | const char *dhcp_domainname = NULL; |
3268 | char **dhcp6_domains = NULL; | |
5512a963 | 3269 | unsigned j; |
07bdc70d PF |
3270 | |
3271 | if (link->dhcp6_client) { | |
4058d339 TG |
3272 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, &dhcp6_lease); |
3273 | if (r < 0 && r != -ENOMSG) | |
07bdc70d PF |
3274 | log_link_debug(link, "No DHCPv6 lease"); |
3275 | } | |
b0e39c82 | 3276 | |
adc5b2e2 TG |
3277 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
3278 | ||
b0e39c82 | 3279 | fputs("DNS=", f); |
ea352b40 | 3280 | space = false; |
5512a963 LP |
3281 | |
3282 | for (j = 0; j < link->network->n_dns; j++) { | |
3283 | _cleanup_free_ char *b = NULL; | |
3284 | ||
3285 | r = in_addr_to_string(link->network->dns[j].family, | |
3286 | &link->network->dns[j].address, &b); | |
3287 | if (r < 0) { | |
3288 | log_debug_errno(r, "Failed to format address, ignoring: %m"); | |
3289 | continue; | |
3290 | } | |
3291 | ||
3292 | if (space) | |
3293 | fputc(' ', f); | |
3294 | fputs(b, f); | |
3295 | space = true; | |
3296 | } | |
d5314fff | 3297 | |
27cb34f5 | 3298 | if (link->network->dhcp_use_dns && |
b0e39c82 TG |
3299 | link->dhcp_lease) { |
3300 | const struct in_addr *addresses; | |
3301 | ||
3302 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
3303 | if (r > 0) { | |
ea352b40 LP |
3304 | if (space) |
3305 | fputc(' ', f); | |
b0e39c82 | 3306 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
3307 | space = true; |
3308 | } | |
3309 | } | |
3310 | ||
27cb34f5 | 3311 | if (link->network->dhcp_use_dns && dhcp6_lease) { |
07bdc70d PF |
3312 | struct in6_addr *in6_addrs; |
3313 | ||
3314 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
3315 | if (r > 0) { | |
3316 | if (space) | |
3317 | fputc(' ', f); | |
3318 | serialize_in6_addrs(f, in6_addrs, r); | |
1e7a0e21 LP |
3319 | space = true; |
3320 | } | |
3321 | } | |
3322 | ||
3323 | /* Make sure to flush out old entries before we use the NDISC data */ | |
3324 | ndisc_vacuum(link); | |
3325 | ||
3326 | if (link->network->dhcp_use_dns && link->ndisc_rdnss) { | |
3327 | NDiscRDNSS *dd; | |
3328 | ||
3329 | SET_FOREACH(dd, link->ndisc_rdnss, i) { | |
3330 | if (space) | |
3331 | fputc(' ', f); | |
3332 | ||
3333 | serialize_in6_addrs(f, &dd->address, 1); | |
3334 | space = true; | |
b0e39c82 TG |
3335 | } |
3336 | } | |
3337 | ||
2ce40956 | 3338 | fputc('\n', f); |
b0e39c82 | 3339 | |
2ce40956 | 3340 | fputs("NTP=", f); |
ea352b40 | 3341 | space = false; |
3df9bec5 | 3342 | fputstrv(f, link->network->ntp, NULL, &space); |
d5314fff | 3343 | |
27cb34f5 | 3344 | if (link->network->dhcp_use_ntp && |
b0e39c82 TG |
3345 | link->dhcp_lease) { |
3346 | const struct in_addr *addresses; | |
3347 | ||
3348 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
3349 | if (r > 0) { | |
ea352b40 LP |
3350 | if (space) |
3351 | fputc(' ', f); | |
b0e39c82 | 3352 | serialize_in_addrs(f, addresses, r); |
07bdc70d PF |
3353 | space = true; |
3354 | } | |
3355 | } | |
3356 | ||
27cb34f5 | 3357 | if (link->network->dhcp_use_ntp && dhcp6_lease) { |
07bdc70d PF |
3358 | struct in6_addr *in6_addrs; |
3359 | char **hosts; | |
07bdc70d PF |
3360 | |
3361 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
3362 | &in6_addrs); | |
3363 | if (r > 0) { | |
3364 | if (space) | |
3365 | fputc(' ', f); | |
3366 | serialize_in6_addrs(f, in6_addrs, r); | |
3367 | space = true; | |
3368 | } | |
3369 | ||
3370 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
3df9bec5 LP |
3371 | if (r > 0) |
3372 | fputstrv(f, hosts, NULL, &space); | |
b0e39c82 TG |
3373 | } |
3374 | ||
2ce40956 | 3375 | fputc('\n', f); |
bd8f6538 | 3376 | |
b2a81c0b LP |
3377 | if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
3378 | if (link->dhcp_lease) | |
3379 | (void) sd_dhcp_lease_get_domainname(link->dhcp_lease, &dhcp_domainname); | |
b2a81c0b LP |
3380 | if (dhcp6_lease) |
3381 | (void) sd_dhcp6_lease_get_domains(dhcp6_lease, &dhcp6_domains); | |
07bdc70d PF |
3382 | } |
3383 | ||
b2a81c0b LP |
3384 | fputs("DOMAINS=", f); |
3385 | fputstrv(f, link->network->search_domains, NULL, &space); | |
07bdc70d | 3386 | |
1e7a0e21 LP |
3387 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) { |
3388 | NDiscDNSSL *dd; | |
9b4d1882 | 3389 | |
1e7a0e21 LP |
3390 | if (dhcp_domainname) |
3391 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
3392 | if (dhcp6_domains) | |
3393 | fputstrv(f, dhcp6_domains, NULL, &space); | |
3394 | ||
3395 | SET_FOREACH(dd, link->ndisc_dnssl, i) | |
3396 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); | |
3397 | } | |
b2a81c0b | 3398 | |
2ce40956 | 3399 | fputc('\n', f); |
6192b846 | 3400 | |
3df9bec5 LP |
3401 | fputs("ROUTE_DOMAINS=", f); |
3402 | fputstrv(f, link->network->route_domains, NULL, NULL); | |
b2a81c0b | 3403 | |
1e7a0e21 LP |
3404 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE) { |
3405 | NDiscDNSSL *dd; | |
b2a81c0b | 3406 | |
1e7a0e21 LP |
3407 | if (dhcp_domainname) |
3408 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
3409 | if (dhcp6_domains) | |
3410 | fputstrv(f, dhcp6_domains, NULL, &space); | |
3411 | ||
3412 | SET_FOREACH(dd, link->ndisc_dnssl, i) | |
3413 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); | |
3414 | } | |
b2a81c0b | 3415 | |
3df9bec5 | 3416 | fputc('\n', f); |
67272d15 | 3417 | |
3c9b8860 | 3418 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 3419 | resolve_support_to_string(link->network->llmnr)); |
aaa297d4 LP |
3420 | fprintf(f, "MDNS=%s\n", |
3421 | resolve_support_to_string(link->network->mdns)); | |
e7780c8d | 3422 | |
ad6c0475 LP |
3423 | if (link->network->dnssec_mode != _DNSSEC_MODE_INVALID) |
3424 | fprintf(f, "DNSSEC=%s\n", | |
3425 | dnssec_mode_to_string(link->network->dnssec_mode)); | |
3426 | ||
8a516214 LP |
3427 | if (!set_isempty(link->network->dnssec_negative_trust_anchors)) { |
3428 | const char *n; | |
3429 | ||
3430 | fputs("DNSSEC_NTA=", f); | |
3431 | space = false; | |
d390f8ef LP |
3432 | SET_FOREACH(n, link->network->dnssec_negative_trust_anchors, i) |
3433 | fputs_with_space(f, n, NULL, &space); | |
8a516214 LP |
3434 | fputc('\n', f); |
3435 | } | |
3436 | ||
2ce40956 | 3437 | fputs("ADDRESSES=", f); |
e7780c8d TG |
3438 | space = false; |
3439 | SET_FOREACH(a, link->addresses, i) { | |
3440 | _cleanup_free_ char *address_str = NULL; | |
3441 | ||
3442 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
3443 | if (r < 0) | |
3444 | goto fail; | |
3445 | ||
e7780c8d TG |
3446 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
3447 | space = true; | |
3448 | } | |
2ce40956 | 3449 | fputc('\n', f); |
c1eb9872 TG |
3450 | |
3451 | fputs("ROUTES=", f); | |
3452 | space = false; | |
3453 | SET_FOREACH(route, link->routes, i) { | |
3454 | _cleanup_free_ char *route_str = NULL; | |
3455 | ||
3456 | r = in_addr_to_string(route->family, &route->dst, &route_str); | |
3457 | if (r < 0) | |
3458 | goto fail; | |
3459 | ||
f833694d TG |
3460 | fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%hhu/"USEC_FMT, space ? " " : "", route_str, |
3461 | route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime); | |
c1eb9872 TG |
3462 | space = true; |
3463 | } | |
3464 | ||
3465 | fputc('\n', f); | |
bcb7a07e | 3466 | } |
7374f9d8 | 3467 | |
b295beea LP |
3468 | print_link_hashmap(f, "CARRIER_BOUND_TO=", link->bound_to_links); |
3469 | print_link_hashmap(f, "CARRIER_BOUND_BY=", link->bound_by_links); | |
0d4ad91d | 3470 | |
8eb9058d | 3471 | if (link->dhcp_lease) { |
0bc70f1d | 3472 | struct in_addr address; |
8eb9058d LP |
3473 | const char *tz = NULL; |
3474 | ||
0bc70f1d TG |
3475 | assert(link->network); |
3476 | ||
8eb9058d LP |
3477 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); |
3478 | if (r >= 0) | |
3479 | fprintf(f, "TIMEZONE=%s\n", tz); | |
8eb9058d | 3480 | |
0bc70f1d TG |
3481 | r = sd_dhcp_lease_get_address(link->dhcp_lease, &address); |
3482 | if (r >= 0) { | |
3483 | fputs("DHCP4_ADDRESS=", f); | |
3484 | serialize_in_addrs(f, &address, 1); | |
3485 | fputc('\n', f); | |
3486 | } | |
d9876a52 | 3487 | |
bd91b83e | 3488 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 3489 | if (r < 0) |
c2d6bd61 | 3490 | goto fail; |
fe8db0c5 | 3491 | |
7374f9d8 | 3492 | fprintf(f, |
b0e39c82 TG |
3493 | "DHCP_LEASE=%s\n", |
3494 | link->lease_file); | |
deb2e523 | 3495 | } else |
68a8723c | 3496 | unlink(link->lease_file); |
fe8db0c5 | 3497 | |
0bc70f1d TG |
3498 | if (link->ipv4ll) { |
3499 | struct in_addr address; | |
3500 | ||
3501 | r = sd_ipv4ll_get_address(link->ipv4ll, &address); | |
3502 | if (r >= 0) { | |
3503 | fputs("IPV4LL_ADDRESS=", f); | |
3504 | serialize_in_addrs(f, &address, 1); | |
3505 | fputc('\n', f); | |
3506 | } | |
3507 | } | |
3508 | ||
c2d6bd61 LP |
3509 | r = fflush_and_check(f); |
3510 | if (r < 0) | |
3511 | goto fail; | |
fe8db0c5 | 3512 | |
c2d6bd61 | 3513 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 3514 | r = -errno; |
c2d6bd61 | 3515 | goto fail; |
fe8db0c5 TG |
3516 | } |
3517 | ||
c2d6bd61 | 3518 | return 0; |
dacd6cee | 3519 | |
c2d6bd61 | 3520 | fail: |
6a7a4e4d | 3521 | (void) unlink(link->state_file); |
6a7a4e4d LP |
3522 | if (temp_path) |
3523 | (void) unlink(temp_path); | |
3524 | ||
dacd6cee | 3525 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
3526 | } |
3527 | ||
84de38c5 TG |
3528 | /* The serialized state in /run is no longer up-to-date. */ |
3529 | void link_dirty(Link *link) { | |
3530 | int r; | |
3531 | ||
3532 | assert(link); | |
3533 | ||
0c241a37 SS |
3534 | /* mark manager dirty as link is dirty */ |
3535 | manager_dirty(link->manager); | |
3536 | ||
84de38c5 TG |
3537 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); |
3538 | if (r < 0) | |
3539 | /* allocation errors are ignored */ | |
3540 | return; | |
3541 | ||
3542 | r = set_put(link->manager->dirty_links, link); | |
0c241a37 SS |
3543 | if (r <= 0) |
3544 | /* don't take another ref if the link was already dirty */ | |
84de38c5 TG |
3545 | return; |
3546 | ||
3547 | link_ref(link); | |
3548 | } | |
3549 | ||
3550 | /* The serialized state in /run is up-to-date */ | |
3551 | void link_clean(Link *link) { | |
3552 | assert(link); | |
3553 | assert(link->manager); | |
3554 | ||
3555 | set_remove(link->manager->dirty_links, link); | |
3556 | link_unref(link); | |
3557 | } | |
3558 | ||
fe8db0c5 | 3559 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 3560 | [LINK_STATE_PENDING] = "pending", |
fe8db0c5 TG |
3561 | [LINK_STATE_ENSLAVING] = "configuring", |
3562 | [LINK_STATE_SETTING_ADDRESSES] = "configuring", | |
3563 | [LINK_STATE_SETTING_ROUTES] = "configuring", | |
3564 | [LINK_STATE_CONFIGURED] = "configured", | |
57bd6899 | 3565 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 3566 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 3567 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
3568 | }; |
3569 | ||
3570 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
e375dcde TG |
3571 | |
3572 | static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { | |
d3df0e39 TG |
3573 | [LINK_OPERSTATE_OFF] = "off", |
3574 | [LINK_OPERSTATE_NO_CARRIER] = "no-carrier", | |
e375dcde TG |
3575 | [LINK_OPERSTATE_DORMANT] = "dormant", |
3576 | [LINK_OPERSTATE_CARRIER] = "carrier", | |
3577 | [LINK_OPERSTATE_DEGRADED] = "degraded", | |
3578 | [LINK_OPERSTATE_ROUTABLE] = "routable", | |
3579 | }; | |
3580 | ||
3581 | DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); |