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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
f579559b | 2 | |
9aa5d8ba | 3 | #include <netinet/in.h> |
f579559b | 4 | #include <linux/if.h> |
06828bb6 | 5 | #include <linux/can/netlink.h> |
4cc7a82c | 6 | #include <unistd.h> |
f579559b | 7 | |
b5efdb8a | 8 | #include "alloc-util.h" |
1346b1f0 | 9 | #include "bus-util.h" |
27dfc982 | 10 | #include "dhcp-identifier.h" |
bd91b83e | 11 | #include "dhcp-lease-internal.h" |
686d13b9 | 12 | #include "env-file.h" |
3ffd4af2 | 13 | #include "fd-util.h" |
cf1d700d | 14 | #include "fileio.h" |
ef118d00 | 15 | #include "missing_network.h" |
bdb9f580 | 16 | #include "netdev/vrf.h" |
cf1d700d | 17 | #include "netlink-util.h" |
c6f7c917 | 18 | #include "network-internal.h" |
a0e5c15d | 19 | #include "networkd-ipv6-proxy-ndp.h" |
8e1ad1ea | 20 | #include "networkd-lldp-tx.h" |
23f53b99 | 21 | #include "networkd-manager.h" |
1e7a0e21 | 22 | #include "networkd-ndisc.h" |
e4a71bf3 | 23 | #include "networkd-neighbor.h" |
7465dd22 | 24 | #include "networkd-radv.h" |
bce67bbe | 25 | #include "networkd-routing-policy-rule.h" |
cf1d700d TG |
26 | #include "set.h" |
27 | #include "socket-util.h" | |
15a5e950 | 28 | #include "stdio-util.h" |
8b43440b | 29 | #include "string-table.h" |
51517f9e | 30 | #include "strv.h" |
62e021a9 | 31 | #include "sysctl-util.h" |
e4de7287 | 32 | #include "tmpfile-util.h" |
299ad32d | 33 | #include "udev-util.h" |
cf1d700d TG |
34 | #include "util.h" |
35 | #include "virt.h" | |
fc2f9534 | 36 | |
bdb9f580 YW |
37 | uint32_t link_get_vrf_table(Link *link) { |
38 | return link->network->vrf ? VRF(link->network->vrf)->table : RT_TABLE_MAIN; | |
39 | } | |
40 | ||
41 | uint32_t link_get_dhcp_route_table(Link *link) { | |
42 | /* When the interface is part of an VRF use the VRFs routing table, unless | |
43 | * another table is explicitly specified. */ | |
44 | if (link->network->dhcp_route_table_set) | |
45 | return link->network->dhcp_route_table; | |
46 | return link_get_vrf_table(link); | |
47 | } | |
48 | ||
49 | uint32_t link_get_ipv6_accept_ra_route_table(Link *link) { | |
50 | if (link->network->ipv6_accept_ra_route_table_set) | |
51 | return link->network->ipv6_accept_ra_route_table; | |
52 | return link_get_vrf_table(link); | |
53 | } | |
54 | ||
f24648a6 YW |
55 | DUID* link_get_duid(Link *link) { |
56 | if (link->network->duid.type != _DUID_TYPE_INVALID) | |
57 | return &link->network->duid; | |
58 | else | |
59 | return &link->manager->duid; | |
60 | } | |
61 | ||
b9d74c40 LP |
62 | static bool link_dhcp6_enabled(Link *link) { |
63 | assert(link); | |
64 | ||
fa709992 LP |
65 | if (!socket_ipv6_is_supported()) |
66 | return false; | |
67 | ||
78c958f8 TG |
68 | if (link->flags & IFF_LOOPBACK) |
69 | return false; | |
70 | ||
71 | if (!link->network) | |
72 | return false; | |
73 | ||
f2bfcdb9 YW |
74 | if (link->network->bond) |
75 | return false; | |
76 | ||
4b600505 YW |
77 | if (manager_sysctl_ipv6_enabled(link->manager) == 0) |
78 | return false; | |
79 | ||
e0ee46f2 | 80 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
81 | } |
82 | ||
b9d74c40 LP |
83 | static bool link_dhcp4_enabled(Link *link) { |
84 | assert(link); | |
85 | ||
78c958f8 TG |
86 | if (link->flags & IFF_LOOPBACK) |
87 | return false; | |
88 | ||
89 | if (!link->network) | |
90 | return false; | |
91 | ||
f2bfcdb9 YW |
92 | if (link->network->bond) |
93 | return false; | |
94 | ||
e0ee46f2 | 95 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
96 | } |
97 | ||
b9d74c40 LP |
98 | static bool link_dhcp4_server_enabled(Link *link) { |
99 | assert(link); | |
100 | ||
78c958f8 TG |
101 | if (link->flags & IFF_LOOPBACK) |
102 | return false; | |
103 | ||
104 | if (!link->network) | |
105 | return false; | |
106 | ||
f2bfcdb9 YW |
107 | if (link->network->bond) |
108 | return false; | |
109 | ||
78c958f8 TG |
110 | return link->network->dhcp_server; |
111 | } | |
112 | ||
8bc17bb3 | 113 | bool link_ipv4ll_enabled(Link *link) { |
b9d74c40 LP |
114 | assert(link); |
115 | ||
78c958f8 TG |
116 | if (link->flags & IFF_LOOPBACK) |
117 | return false; | |
118 | ||
119 | if (!link->network) | |
120 | return false; | |
121 | ||
89b9a975 | 122 | if (STRPTR_IN_SET(link->kind, "vrf", "wireguard")) |
a8f5bba6 JD |
123 | return false; |
124 | ||
f2bfcdb9 YW |
125 | if (link->network->bond) |
126 | return false; | |
127 | ||
e0ee46f2 | 128 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
d0d6a4cd TG |
129 | } |
130 | ||
8bc17bb3 SS |
131 | bool link_ipv4ll_fallback_enabled(Link *link) { |
132 | assert(link); | |
133 | ||
134 | if (link->flags & IFF_LOOPBACK) | |
135 | return false; | |
136 | ||
137 | if (!link->network) | |
138 | return false; | |
139 | ||
140 | if (STRPTR_IN_SET(link->kind, "vrf", "wireguard")) | |
141 | return false; | |
142 | ||
143 | if (link->network->bond) | |
144 | return false; | |
145 | ||
146 | return link->network->link_local & ADDRESS_FAMILY_FALLBACK_IPV4; | |
147 | } | |
148 | ||
b9d74c40 LP |
149 | static bool link_ipv6ll_enabled(Link *link) { |
150 | assert(link); | |
151 | ||
fa709992 LP |
152 | if (!socket_ipv6_is_supported()) |
153 | return false; | |
154 | ||
d0d6a4cd TG |
155 | if (link->flags & IFF_LOOPBACK) |
156 | return false; | |
157 | ||
158 | if (!link->network) | |
159 | return false; | |
160 | ||
89b9a975 | 161 | if (STRPTR_IN_SET(link->kind, "vrf", "wireguard")) |
a8f5bba6 JD |
162 | return false; |
163 | ||
f2bfcdb9 YW |
164 | if (link->network->bond) |
165 | return false; | |
166 | ||
4b600505 YW |
167 | if (manager_sysctl_ipv6_enabled(link->manager) == 0) |
168 | return false; | |
169 | ||
e0ee46f2 | 170 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
171 | } |
172 | ||
439689c6 SS |
173 | static bool link_ipv6_enabled(Link *link) { |
174 | assert(link); | |
175 | ||
176 | if (!socket_ipv6_is_supported()) | |
177 | return false; | |
178 | ||
b102cdca | 179 | if (link->network->bond) |
2b00a4e0 TY |
180 | return false; |
181 | ||
4b600505 YW |
182 | if (manager_sysctl_ipv6_enabled(link->manager) == 0) |
183 | return false; | |
184 | ||
4cef7fe3 TY |
185 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
186 | return link_ipv6ll_enabled(link) || network_has_static_ipv6_addresses(link->network); | |
439689c6 SS |
187 | } |
188 | ||
7465dd22 PF |
189 | static bool link_radv_enabled(Link *link) { |
190 | assert(link); | |
191 | ||
192 | if (!link_ipv6ll_enabled(link)) | |
193 | return false; | |
194 | ||
55a7c78b | 195 | return link->network->router_prefix_delegation != RADV_PREFIX_DELEGATION_NONE; |
7465dd22 PF |
196 | } |
197 | ||
8e1ad1ea | 198 | static bool link_lldp_rx_enabled(Link *link) { |
b710e6b6 LP |
199 | assert(link); |
200 | ||
ce43e484 SS |
201 | if (link->flags & IFF_LOOPBACK) |
202 | return false; | |
203 | ||
b710e6b6 LP |
204 | if (link->iftype != ARPHRD_ETHER) |
205 | return false; | |
206 | ||
ce43e484 SS |
207 | if (!link->network) |
208 | return false; | |
209 | ||
764febc2 SS |
210 | /* LLDP should be handled on bridge slaves as those have a direct |
211 | * connection to their peers not on the bridge master. Linux doesn't | |
212 | * even (by default) forward lldp packets to the bridge master.*/ | |
213 | if (streq_ptr("bridge", link->kind)) | |
ce43e484 SS |
214 | return false; |
215 | ||
34437b4f | 216 | return link->network->lldp_mode != LLDP_MODE_NO; |
ce43e484 SS |
217 | } |
218 | ||
769d324c | 219 | static bool link_ipv4_forward_enabled(Link *link) { |
b9d74c40 LP |
220 | assert(link); |
221 | ||
5a8bcb67 LP |
222 | if (link->flags & IFF_LOOPBACK) |
223 | return false; | |
224 | ||
225 | if (!link->network) | |
226 | return false; | |
227 | ||
765afd5c LP |
228 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
229 | return false; | |
230 | ||
e0ee46f2 | 231 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
232 | } |
233 | ||
234 | static bool link_ipv6_forward_enabled(Link *link) { | |
b9d74c40 | 235 | assert(link); |
765afd5c LP |
236 | |
237 | if (!socket_ipv6_is_supported()) | |
238 | return false; | |
239 | ||
769d324c LP |
240 | if (link->flags & IFF_LOOPBACK) |
241 | return false; | |
242 | ||
243 | if (!link->network) | |
244 | return false; | |
245 | ||
765afd5c LP |
246 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
247 | return false; | |
248 | ||
4b600505 YW |
249 | if (manager_sysctl_ipv6_enabled(link->manager) == 0) |
250 | return false; | |
251 | ||
e0ee46f2 | 252 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
253 | } |
254 | ||
23d8b221 SS |
255 | static bool link_proxy_arp_enabled(Link *link) { |
256 | assert(link); | |
257 | ||
258 | if (link->flags & IFF_LOOPBACK) | |
259 | return false; | |
260 | ||
261 | if (!link->network) | |
262 | return false; | |
263 | ||
264 | if (link->network->proxy_arp < 0) | |
265 | return false; | |
266 | ||
267 | return true; | |
268 | } | |
269 | ||
b9d74c40 LP |
270 | static bool link_ipv6_accept_ra_enabled(Link *link) { |
271 | assert(link); | |
272 | ||
fa709992 LP |
273 | if (!socket_ipv6_is_supported()) |
274 | return false; | |
275 | ||
f5a8c43f TG |
276 | if (link->flags & IFF_LOOPBACK) |
277 | return false; | |
278 | ||
279 | if (!link->network) | |
280 | return false; | |
281 | ||
702c979f SS |
282 | if (!link_ipv6ll_enabled(link)) |
283 | return false; | |
284 | ||
f5a8c43f TG |
285 | /* If unset use system default (enabled if local forwarding is disabled. |
286 | * disabled if local forwarding is enabled). | |
287 | * If set, ignore or enforce RA independent of local forwarding state. | |
288 | */ | |
289 | if (link->network->ipv6_accept_ra < 0) | |
290 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ | |
291 | return !link_ipv6_forward_enabled(link); | |
292 | else if (link->network->ipv6_accept_ra > 0) | |
293 | /* accept RA even if ip_forward is enabled */ | |
294 | return true; | |
295 | else | |
296 | /* ignore RA */ | |
297 | return false; | |
298 | } | |
299 | ||
1f0d9695 | 300 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
fa709992 | 301 | assert(link); |
d68e2e59 LP |
302 | |
303 | if (!socket_ipv6_is_supported()) | |
304 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; | |
305 | ||
49092e22 | 306 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 307 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
308 | |
309 | if (!link->network) | |
1f0d9695 | 310 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
311 | |
312 | return link->network->ipv6_privacy_extensions; | |
313 | } | |
314 | ||
439689c6 | 315 | static int link_enable_ipv6(Link *link) { |
439689c6 SS |
316 | bool disabled; |
317 | int r; | |
318 | ||
319 | if (link->flags & IFF_LOOPBACK) | |
320 | return 0; | |
321 | ||
322 | disabled = !link_ipv6_enabled(link); | |
323 | ||
62e021a9 | 324 | r = sysctl_write_ip_property_boolean(AF_INET6, link->ifname, "disable_ipv6", disabled); |
439689c6 | 325 | if (r < 0) |
c98b3545 | 326 | log_link_warning_errno(link, r, "Cannot %s IPv6: %m", enable_disable(!disabled)); |
2d37cd53 | 327 | else |
b106c586 | 328 | log_link_info(link, "IPv6 successfully %sd", enable_disable(!disabled)); |
439689c6 SS |
329 | |
330 | return 0; | |
331 | } | |
332 | ||
34bf3c00 YW |
333 | static bool link_is_enslaved(Link *link) { |
334 | if (link->flags & IFF_SLAVE) | |
335 | /* Even if the link is not managed by networkd, honor IFF_SLAVE flag. */ | |
336 | return true; | |
337 | ||
338 | if (!link->enslaved_raw) | |
339 | return false; | |
340 | ||
341 | if (!link->network) | |
342 | return false; | |
343 | ||
344 | if (link->network->bridge) | |
345 | /* TODO: support the case when link is not managed by networkd. */ | |
346 | return true; | |
347 | ||
348 | return false; | |
349 | } | |
350 | ||
45e11abf YW |
351 | static void link_update_master_operstate(Link *link, NetDev *netdev) { |
352 | Link *master; | |
353 | ||
354 | if (!netdev) | |
355 | return; | |
356 | ||
357 | if (link_get(link->manager, netdev->ifindex, &master) < 0) | |
358 | return; | |
359 | ||
360 | link_update_operstate(master, true); | |
361 | } | |
362 | ||
363 | void link_update_operstate(Link *link, bool also_update_master) { | |
84de38c5 | 364 | LinkOperationalState operstate; |
45e11abf | 365 | Iterator i; |
14153d1b | 366 | |
84de38c5 TG |
367 | assert(link); |
368 | ||
369 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
370 | operstate = LINK_OPERSTATE_DORMANT; | |
371 | else if (link_has_carrier(link)) { | |
372 | Address *address; | |
373 | uint8_t scope = RT_SCOPE_NOWHERE; | |
84de38c5 TG |
374 | |
375 | /* if we have carrier, check what addresses we have */ | |
376 | SET_FOREACH(address, link->addresses, i) { | |
377 | if (!address_is_ready(address)) | |
378 | continue; | |
379 | ||
380 | if (address->scope < scope) | |
381 | scope = address->scope; | |
382 | } | |
383 | ||
384 | /* for operstate we also take foreign addresses into account */ | |
385 | SET_FOREACH(address, link->addresses_foreign, i) { | |
386 | if (!address_is_ready(address)) | |
387 | continue; | |
388 | ||
389 | if (address->scope < scope) | |
390 | scope = address->scope; | |
391 | } | |
392 | ||
393 | if (scope < RT_SCOPE_SITE) | |
394 | /* universally accessible addresses found */ | |
395 | operstate = LINK_OPERSTATE_ROUTABLE; | |
396 | else if (scope < RT_SCOPE_HOST) | |
397 | /* only link or site local addresses found */ | |
398 | operstate = LINK_OPERSTATE_DEGRADED; | |
399 | else | |
400 | /* no useful addresses found */ | |
401 | operstate = LINK_OPERSTATE_CARRIER; | |
402 | } else if (link->flags & IFF_UP) | |
403 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
404 | else | |
405 | operstate = LINK_OPERSTATE_OFF; | |
406 | ||
14153d1b | 407 | if (IN_SET(operstate, LINK_OPERSTATE_DEGRADED, LINK_OPERSTATE_CARRIER) && |
34bf3c00 | 408 | link_is_enslaved(link)) |
14153d1b YW |
409 | operstate = LINK_OPERSTATE_ENSLAVED; |
410 | ||
c9cc0383 | 411 | if (operstate >= LINK_OPERSTATE_CARRIER) { |
959f65d3 YW |
412 | Link *slave; |
413 | ||
5f707e12 | 414 | SET_FOREACH(slave, link->slaves, i) { |
959f65d3 YW |
415 | link_update_operstate(slave, false); |
416 | ||
c9cc0383 YW |
417 | if (slave->operstate < LINK_OPERSTATE_CARRIER) |
418 | operstate = LINK_OPERSTATE_DEGRADED_CARRIER; | |
959f65d3 YW |
419 | } |
420 | } | |
421 | ||
84de38c5 TG |
422 | if (link->operstate != operstate) { |
423 | link->operstate = operstate; | |
424 | link_send_changed(link, "OperationalState", NULL); | |
425 | link_dirty(link); | |
84de38c5 | 426 | } |
959f65d3 | 427 | |
45e11abf YW |
428 | if (also_update_master && link->network) { |
429 | link_update_master_operstate(link, link->network->bond); | |
430 | link_update_master_operstate(link, link->network->bridge); | |
959f65d3 | 431 | } |
84de38c5 TG |
432 | } |
433 | ||
51d18171 TG |
434 | #define FLAG_STRING(string, flag, old, new) \ |
435 | (((old ^ new) & flag) \ | |
436 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
437 | : "") | |
438 | ||
1c4baffc | 439 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
440 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
441 | uint8_t operstate; | |
442 | int r; | |
443 | ||
444 | assert(link); | |
445 | ||
446 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
447 | if (r < 0) |
448 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 449 | |
1c4baffc | 450 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
451 | if (r < 0) |
452 | /* if we got a message without operstate, take it to mean | |
453 | the state was unchanged */ | |
454 | operstate = link->kernel_operstate; | |
455 | ||
456 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
457 | return 0; | |
458 | ||
459 | if (link->flags != flags) { | |
6a7a4e4d | 460 | 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 |
461 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
462 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
463 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
464 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
465 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
466 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
467 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
468 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
469 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
470 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
471 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
472 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
473 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
474 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
475 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
476 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
477 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
478 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
479 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
480 | ||
481 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
482 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
483 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
484 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
485 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
486 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
487 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
488 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
489 | ||
490 | /* link flags are currently at most 18 bits, let's align to | |
491 | * printing 20 */ | |
492 | if (unknown_flags_added) | |
79008bdd | 493 | log_link_debug(link, |
6a7a4e4d | 494 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
495 | unknown_flags_added); |
496 | ||
497 | if (unknown_flags_removed) | |
79008bdd | 498 | log_link_debug(link, |
6a7a4e4d | 499 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
500 | unknown_flags_removed); |
501 | } | |
502 | ||
503 | link->flags = flags; | |
504 | link->kernel_operstate = operstate; | |
505 | ||
959f65d3 | 506 | link_update_operstate(link, true); |
51d18171 TG |
507 | |
508 | return 0; | |
509 | } | |
510 | ||
1c4baffc | 511 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
8e766630 | 512 | _cleanup_(link_unrefp) Link *link = NULL; |
505f8da7 | 513 | uint16_t type; |
6cad256d | 514 | const char *ifname, *kind = NULL; |
505f8da7 | 515 | int r, ifindex; |
b710e6b6 | 516 | unsigned short iftype; |
f579559b | 517 | |
0c2f9b84 | 518 | assert(manager); |
505f8da7 | 519 | assert(message); |
f579559b TG |
520 | assert(ret); |
521 | ||
6cad256d TJ |
522 | /* check for link kind */ |
523 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
524 | if (r == 0) { | |
db2f8a2e | 525 | (void) sd_netlink_message_read_string(message, IFLA_INFO_KIND, &kind); |
6cad256d TJ |
526 | r = sd_netlink_message_exit_container(message); |
527 | if (r < 0) | |
528 | return r; | |
529 | } | |
530 | ||
1c4baffc | 531 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
532 | if (r < 0) |
533 | return r; | |
534 | else if (type != RTM_NEWLINK) | |
535 | return -EINVAL; | |
536 | ||
537 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
538 | if (r < 0) | |
539 | return r; | |
540 | else if (ifindex <= 0) | |
541 | return -EINVAL; | |
542 | ||
b710e6b6 LP |
543 | r = sd_rtnl_message_link_get_type(message, &iftype); |
544 | if (r < 0) | |
545 | return r; | |
546 | ||
1c4baffc | 547 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
548 | if (r < 0) |
549 | return r; | |
550 | ||
17f9c355 | 551 | link = new(Link, 1); |
f579559b TG |
552 | if (!link) |
553 | return -ENOMEM; | |
554 | ||
17f9c355 YW |
555 | *link = (Link) { |
556 | .n_ref = 1, | |
557 | .manager = manager, | |
558 | .state = LINK_STATE_PENDING, | |
559 | .rtnl_extended_attrs = true, | |
560 | .ifindex = ifindex, | |
561 | .iftype = iftype, | |
562 | }; | |
563 | ||
505f8da7 TG |
564 | link->ifname = strdup(ifname); |
565 | if (!link->ifname) | |
566 | return -ENOMEM; | |
f579559b | 567 | |
6cad256d TJ |
568 | if (kind) { |
569 | link->kind = strdup(kind); | |
570 | if (!link->kind) | |
571 | return -ENOMEM; | |
572 | } | |
573 | ||
cbff7170 TJ |
574 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t *)&link->master_ifindex); |
575 | if (r < 0) | |
576 | log_link_debug_errno(link, r, "New device has no master, continuing without"); | |
577 | ||
1c4baffc | 578 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 579 | if (r < 0) |
34437b4f | 580 | log_link_debug_errno(link, r, "MAC address not found for new device, continuing without"); |
512922f8 | 581 | |
34437b4f | 582 | if (asprintf(&link->state_file, "/run/systemd/netif/links/%d", link->ifindex) < 0) |
315db1a8 | 583 | return -ENOMEM; |
fe8db0c5 | 584 | |
34437b4f | 585 | if (asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", link->ifindex) < 0) |
68a8723c TG |
586 | return -ENOMEM; |
587 | ||
34437b4f | 588 | if (asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", link->ifindex) < 0) |
49699bac SS |
589 | return -ENOMEM; |
590 | ||
d5099efc | 591 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
592 | if (r < 0) |
593 | return r; | |
594 | ||
595 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
596 | if (r < 0) |
597 | return r; | |
598 | ||
51d18171 TG |
599 | r = link_update_flags(link, message); |
600 | if (r < 0) | |
601 | return r; | |
602 | ||
1cc6c93a | 603 | *ret = TAKE_PTR(link); |
f579559b TG |
604 | |
605 | return 0; | |
606 | } | |
607 | ||
8301aa0b | 608 | static Link *link_free(Link *link) { |
428fd0a7 TG |
609 | Address *address; |
610 | ||
8301aa0b | 611 | assert(link); |
f579559b | 612 | |
f535e354 YW |
613 | link->routes = set_free_with_destructor(link->routes, route_free); |
614 | link->routes_foreign = set_free_with_destructor(link->routes_foreign, route_free); | |
adda1ed9 | 615 | |
f535e354 YW |
616 | link->addresses = set_free_with_destructor(link->addresses, address_free); |
617 | link->addresses_foreign = set_free_with_destructor(link->addresses_foreign, address_free); | |
adda1ed9 | 618 | |
11bf3cce LP |
619 | while ((address = link->pool_addresses)) { |
620 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
621 | address_free(address); | |
622 | } | |
623 | ||
bfcdba8d | 624 | sd_dhcp_server_unref(link->dhcp_server); |
e5b04c8d | 625 | sd_dhcp_client_unref(link->dhcp_client); |
a6cc569e | 626 | sd_dhcp_lease_unref(link->dhcp_lease); |
f5be5601 | 627 | |
7272b25e | 628 | link_lldp_emit_stop(link); |
8e1ad1ea | 629 | |
68a8723c TG |
630 | free(link->lease_file); |
631 | ||
4afd3348 | 632 | sd_lldp_unref(link->lldp); |
49699bac SS |
633 | free(link->lldp_file); |
634 | ||
c69305ff LP |
635 | ndisc_flush(link); |
636 | ||
56cd007a | 637 | sd_ipv4ll_unref(link->ipv4ll); |
4138fb2c | 638 | sd_dhcp6_client_unref(link->dhcp6_client); |
1e7a0e21 | 639 | sd_ndisc_unref(link->ndisc); |
7465dd22 | 640 | sd_radv_unref(link->radv); |
1e7a0e21 | 641 | |
c166a070 | 642 | free(link->ifname); |
ceac4078 | 643 | free(link->kind); |
6cad256d | 644 | |
db2f8a2e | 645 | (void) unlink(link->state_file); |
fe8db0c5 | 646 | free(link->state_file); |
c166a070 | 647 | |
51517f9e | 648 | sd_device_unref(link->sd_device); |
b5db00e5 | 649 | |
0d4ad91d | 650 | hashmap_free(link->bound_to_links); |
0d4ad91d AR |
651 | hashmap_free(link->bound_by_links); |
652 | ||
5f707e12 | 653 | set_free_with_destructor(link->slaves, link_unref); |
033295c1 | 654 | |
c9c908a6 YW |
655 | network_unref(link->network); |
656 | ||
8301aa0b | 657 | return mfree(link); |
14b746f7 TG |
658 | } |
659 | ||
8301aa0b | 660 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 661 | |
11a7f229 TG |
662 | int link_get(Manager *m, int ifindex, Link **ret) { |
663 | Link *link; | |
11a7f229 TG |
664 | |
665 | assert(m); | |
11a7f229 TG |
666 | assert(ifindex); |
667 | assert(ret); | |
668 | ||
ae06ab10 | 669 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
670 | if (!link) |
671 | return -ENODEV; | |
672 | ||
673 | *ret = link; | |
674 | ||
675 | return 0; | |
676 | } | |
677 | ||
e331e246 TG |
678 | static void link_set_state(Link *link, LinkState state) { |
679 | assert(link); | |
680 | ||
681 | if (link->state == state) | |
682 | return; | |
683 | ||
0beb9542 YW |
684 | log_link_debug(link, "State changed: %s -> %s", |
685 | link_state_to_string(link->state), | |
686 | link_state_to_string(state)); | |
687 | ||
e331e246 TG |
688 | link->state = state; |
689 | ||
690 | link_send_changed(link, "AdministrativeState", NULL); | |
e331e246 TG |
691 | } |
692 | ||
57bd6899 TG |
693 | static void link_enter_unmanaged(Link *link) { |
694 | assert(link); | |
695 | ||
6a7a4e4d | 696 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 697 | |
e331e246 | 698 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 699 | |
84de38c5 | 700 | link_dirty(link); |
57bd6899 TG |
701 | } |
702 | ||
946f8e14 | 703 | int link_stop_clients(Link *link) { |
111bb8f9 TG |
704 | int r = 0, k; |
705 | ||
706 | assert(link); | |
707 | assert(link->manager); | |
708 | assert(link->manager->event); | |
709 | ||
ba179154 | 710 | if (link->dhcp_client) { |
111bb8f9 | 711 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 712 | if (k < 0) |
36c7d709 | 713 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
714 | } |
715 | ||
ba179154 | 716 | if (link->ipv4ll) { |
111bb8f9 | 717 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d | 718 | if (k < 0) |
36c7d709 | 719 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); |
dd43110f TG |
720 | } |
721 | ||
f5a8c43f TG |
722 | if (link->dhcp6_client) { |
723 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
724 | if (k < 0) | |
36c7d709 | 725 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); |
f5a8c43f | 726 | } |
4138fb2c | 727 | |
1e7a0e21 LP |
728 | if (link->ndisc) { |
729 | k = sd_ndisc_stop(link->ndisc); | |
6a7a4e4d | 730 | if (k < 0) |
36c7d709 | 731 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
732 | } |
733 | ||
7465dd22 PF |
734 | if (link->radv) { |
735 | k = sd_radv_stop(link->radv); | |
736 | if (k < 0) | |
737 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
738 | } | |
739 | ||
7272b25e | 740 | link_lldp_emit_stop(link); |
111bb8f9 TG |
741 | return r; |
742 | } | |
743 | ||
b22d8a00 | 744 | void link_enter_failed(Link *link) { |
ef1ba606 | 745 | assert(link); |
f882c247 | 746 | |
370e9930 | 747 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
748 | return; |
749 | ||
6a7a4e4d | 750 | log_link_warning(link, "Failed"); |
449f7554 | 751 | |
e331e246 | 752 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 753 | |
111bb8f9 TG |
754 | link_stop_clients(link); |
755 | ||
84de38c5 | 756 | link_dirty(link); |
f882c247 TG |
757 | } |
758 | ||
4f434938 LP |
759 | static Address* link_find_dhcp_server_address(Link *link) { |
760 | Address *address; | |
761 | ||
762 | assert(link); | |
763 | assert(link->network); | |
764 | ||
d4cdbea5 | 765 | /* The first statically configured address if there is any */ |
4f434938 LP |
766 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
767 | ||
768 | if (address->family != AF_INET) | |
769 | continue; | |
770 | ||
af93291c | 771 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
772 | continue; |
773 | ||
774 | return address; | |
775 | } | |
776 | ||
777 | /* If that didn't work, find a suitable address we got from the pool */ | |
778 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
779 | if (address->family != AF_INET) | |
780 | continue; | |
781 | ||
782 | return address; | |
783 | } | |
784 | ||
785 | return NULL; | |
786 | } | |
787 | ||
7033af49 YW |
788 | static int link_join_netdevs_after_configured(Link *link) { |
789 | NetDev *netdev; | |
790 | Iterator i; | |
791 | int r; | |
792 | ||
793 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { | |
794 | if (netdev->ifindex > 0) | |
795 | /* Assume already enslaved. */ | |
796 | continue; | |
797 | ||
798 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_AFTER_CONFIGURED) | |
799 | continue; | |
800 | ||
801 | log_struct(LOG_DEBUG, | |
802 | LOG_LINK_INTERFACE(link), | |
803 | LOG_NETDEV_INTERFACE(netdev), | |
804 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); | |
805 | ||
806 | r = netdev_join(netdev, link, NULL); | |
807 | if (r < 0) | |
808 | return log_struct_errno(LOG_WARNING, r, | |
809 | LOG_LINK_INTERFACE(link), | |
810 | LOG_NETDEV_INTERFACE(netdev), | |
811 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); | |
812 | } | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
e3a7b048 | 817 | static void link_enter_configured(Link *link) { |
dd43110f TG |
818 | assert(link); |
819 | assert(link->network); | |
e3a7b048 | 820 | |
289e6774 | 821 | if (link->state != LINK_STATE_CONFIGURING) |
e3a7b048 | 822 | return; |
dd43110f | 823 | |
6a7a4e4d | 824 | log_link_info(link, "Configured"); |
dd43110f | 825 | |
e331e246 | 826 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 827 | |
7033af49 YW |
828 | (void) link_join_netdevs_after_configured(link); |
829 | ||
84de38c5 | 830 | link_dirty(link); |
dd43110f TG |
831 | } |
832 | ||
47079967 | 833 | static int link_request_set_routing_policy_rule(Link *link) { |
8a9b3a23 SS |
834 | RoutingPolicyRule *rule, *rrule = NULL; |
835 | int r; | |
836 | ||
837 | assert(link); | |
838 | assert(link->network); | |
839 | ||
2428613f YW |
840 | link_set_state(link, LINK_STATE_CONFIGURING); |
841 | link->routing_policy_rules_configured = false; | |
842 | ||
8a9b3a23 SS |
843 | LIST_FOREACH(rules, rule, link->network->rules) { |
844 | r = routing_policy_rule_get(link->manager, rule->family, &rule->from, rule->from_prefixlen, &rule->to, | |
926062f0 SS |
845 | rule->to_prefixlen, rule->tos, rule->fwmark, rule->table, rule->iif, rule->oif, |
846 | rule->protocol, &rule->sport, &rule->dport, &rrule); | |
e6b65ab7 | 847 | if (r == 0) { |
8a9b3a23 SS |
848 | (void) routing_policy_rule_make_local(link->manager, rrule); |
849 | continue; | |
850 | } | |
851 | ||
29889b4d | 852 | r = routing_policy_rule_configure(rule, link, NULL, false); |
8a9b3a23 SS |
853 | if (r < 0) { |
854 | log_link_warning_errno(link, r, "Could not set routing policy rules: %m"); | |
855 | link_enter_failed(link); | |
856 | return r; | |
857 | } | |
858 | ||
7715629e | 859 | link->routing_policy_rule_messages++; |
8a9b3a23 SS |
860 | } |
861 | ||
862 | routing_policy_rule_purge(link->manager, link); | |
7715629e ST |
863 | if (link->routing_policy_rule_messages == 0) { |
864 | link->routing_policy_rules_configured = true; | |
865 | link_check_ready(link); | |
866 | } else | |
867 | log_link_debug(link, "Setting routing policy rules"); | |
8a9b3a23 SS |
868 | |
869 | return 0; | |
870 | } | |
871 | ||
302a796f | 872 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
f882c247 TG |
873 | int r; |
874 | ||
1046bf9b | 875 | assert(link); |
7715629e | 876 | assert(link->route_messages > 0); |
289e6774 WKI |
877 | assert(IN_SET(link->state, LINK_STATE_CONFIGURING, |
878 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 879 | |
7715629e | 880 | link->route_messages--; |
f882c247 | 881 | |
77a008c0 | 882 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
883 | return 1; |
884 | ||
1c4baffc | 885 | r = sd_netlink_message_get_errno(m); |
c166a070 | 886 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 887 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 888 | |
7715629e | 889 | if (link->route_messages == 0) { |
6a7a4e4d | 890 | log_link_debug(link, "Routes set"); |
7715629e | 891 | link->static_routes_configured = true; |
8012cd39 | 892 | link_check_ready(link); |
dd3efc09 | 893 | } |
f882c247 TG |
894 | |
895 | return 1; | |
896 | } | |
897 | ||
b5799eeb | 898 | int link_request_set_routes(Link *link) { |
bf61b05a LP |
899 | enum { |
900 | PHASE_NON_GATEWAY, /* First phase: Routes without a gateway */ | |
901 | PHASE_GATEWAY, /* Second phase: Routes with a gateway */ | |
902 | _PHASE_MAX | |
903 | } phase; | |
a6cc569e | 904 | Route *rt; |
f882c247 TG |
905 | int r; |
906 | ||
907 | assert(link); | |
908 | assert(link->network); | |
c42ff3a1 WKI |
909 | assert(link->addresses_configured); |
910 | assert(link->address_messages == 0); | |
289e6774 | 911 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 912 | |
289e6774 | 913 | link_set_state(link, LINK_STATE_CONFIGURING); |
2428613f | 914 | link->static_routes_configured = false; |
27c34f73 | 915 | |
47079967 | 916 | r = link_request_set_routing_policy_rule(link); |
f3ef324d YW |
917 | if (r < 0) |
918 | return r; | |
f882c247 | 919 | |
bf61b05a LP |
920 | /* First add the routes that enable us to talk to gateways, then add in the others that need a gateway. */ |
921 | for (phase = 0; phase < _PHASE_MAX; phase++) | |
922 | LIST_FOREACH(routes, rt, link->network->static_routes) { | |
0d34228f | 923 | |
bf61b05a LP |
924 | if (in_addr_is_null(rt->family, &rt->gw) != (phase == PHASE_NON_GATEWAY)) |
925 | continue; | |
a6cc569e | 926 | |
0d34228f SS |
927 | r = route_configure(rt, link, route_handler); |
928 | if (r < 0) { | |
929 | log_link_warning_errno(link, r, "Could not set routes: %m"); | |
930 | link_enter_failed(link); | |
931 | return r; | |
932 | } | |
933 | ||
934 | link->route_messages++; | |
935 | } | |
f5be5601 | 936 | |
7715629e ST |
937 | if (link->route_messages == 0) { |
938 | link->static_routes_configured = true; | |
8012cd39 | 939 | link_check_ready(link); |
431ca2ce | 940 | } else |
6a7a4e4d | 941 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
942 | |
943 | return 0; | |
944 | } | |
945 | ||
6accfd31 DA |
946 | void link_check_ready(Link *link) { |
947 | Address *a; | |
948 | Iterator i; | |
949 | ||
950 | assert(link); | |
951 | ||
952 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
953 | return; | |
954 | ||
955 | if (!link->network) | |
956 | return; | |
957 | ||
958 | if (!link->addresses_configured) | |
959 | return; | |
960 | ||
961 | if (!link->neighbors_configured) | |
962 | return; | |
963 | ||
6aa5773b DA |
964 | SET_FOREACH(a, link->addresses, i) |
965 | if (!address_is_ready(a)) | |
966 | return; | |
967 | ||
968 | if (!link->addresses_ready) { | |
969 | link->addresses_ready = true; | |
970 | link_request_set_routes(link); | |
971 | } | |
972 | ||
6accfd31 DA |
973 | if (!link->static_routes_configured) |
974 | return; | |
975 | ||
976 | if (!link->routing_policy_rules_configured) | |
977 | return; | |
978 | ||
6c0c041a YW |
979 | if (link_ipv4ll_enabled(link) && !(link->ipv4ll_address && link->ipv4ll_route)) |
980 | return; | |
6accfd31 | 981 | |
b102cdca YW |
982 | if (link_ipv6ll_enabled(link) && |
983 | in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) | |
984 | return; | |
6accfd31 | 985 | |
552081a4 | 986 | if ((link_dhcp4_enabled(link) || link_dhcp6_enabled(link)) && |
6c0c041a YW |
987 | !(link->dhcp4_configured || link->dhcp6_configured) && |
988 | !(link_ipv4ll_fallback_enabled(link) && link->ipv4ll_address && link->ipv4ll_route)) | |
989 | /* When DHCP is enabled, at least one protocol must provide an address, or | |
990 | * an IPv4ll fallback address must be configured. */ | |
b102cdca | 991 | return; |
6accfd31 | 992 | |
b102cdca YW |
993 | if (link_ipv6_accept_ra_enabled(link) && !link->ndisc_configured) |
994 | return; | |
6accfd31 | 995 | |
6accfd31 DA |
996 | if (link->state != LINK_STATE_CONFIGURED) |
997 | link_enter_configured(link); | |
998 | ||
999 | return; | |
1000 | } | |
1001 | ||
e4a71bf3 WKI |
1002 | static int link_request_set_neighbors(Link *link) { |
1003 | Neighbor *neighbor; | |
1004 | int r; | |
1005 | ||
1006 | assert(link); | |
1007 | assert(link->network); | |
1008 | assert(link->state != _LINK_STATE_INVALID); | |
1009 | ||
1010 | link_set_state(link, LINK_STATE_CONFIGURING); | |
2428613f | 1011 | link->neighbors_configured = false; |
e4a71bf3 WKI |
1012 | |
1013 | LIST_FOREACH(neighbors, neighbor, link->network->neighbors) { | |
1014 | r = neighbor_configure(neighbor, link, NULL); | |
1015 | if (r < 0) { | |
1016 | log_link_warning_errno(link, r, "Could not set neighbor: %m"); | |
1017 | link_enter_failed(link); | |
1018 | return r; | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | if (link->neighbor_messages == 0) { | |
1023 | link->neighbors_configured = true; | |
1024 | link_check_ready(link); | |
1025 | } else | |
1026 | log_link_debug(link, "Setting neighbors"); | |
1027 | ||
1028 | return 0; | |
1029 | } | |
1030 | ||
302a796f | 1031 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
f882c247 TG |
1032 | int r; |
1033 | ||
4958aee4 | 1034 | assert(rtnl); |
f5be5601 TG |
1035 | assert(m); |
1036 | assert(link); | |
1037 | assert(link->ifname); | |
7715629e | 1038 | assert(link->address_messages > 0); |
289e6774 | 1039 | assert(IN_SET(link->state, LINK_STATE_CONFIGURING, |
370e9930 | 1040 | LINK_STATE_FAILED, LINK_STATE_LINGER)); |
f882c247 | 1041 | |
7715629e | 1042 | link->address_messages--; |
f882c247 | 1043 | |
5da8149f | 1044 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
1045 | return 1; |
1046 | ||
1c4baffc | 1047 | r = sd_netlink_message_get_errno(m); |
c166a070 | 1048 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 1049 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 1050 | else if (r >= 0) |
200a0868 | 1051 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 1052 | |
7715629e | 1053 | if (link->address_messages == 0) { |
6a7a4e4d | 1054 | log_link_debug(link, "Addresses set"); |
c42ff3a1 | 1055 | link->addresses_configured = true; |
6aa5773b | 1056 | link_check_ready(link); |
dd3efc09 | 1057 | } |
f882c247 TG |
1058 | |
1059 | return 1; | |
1060 | } | |
1061 | ||
a380b2d4 | 1062 | static int link_push_uplink_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
4f5f911e LP |
1063 | _cleanup_free_ struct in_addr *addresses = NULL; |
1064 | size_t n_addresses = 0, n_allocated = 0; | |
5512a963 | 1065 | unsigned i; |
4f5f911e LP |
1066 | |
1067 | log_debug("Copying DNS server information from %s", link->ifname); | |
1068 | ||
1069 | if (!link->network) | |
1070 | return 0; | |
1071 | ||
5512a963 | 1072 | for (i = 0; i < link->network->n_dns; i++) { |
49ad6829 | 1073 | struct in_addr ia; |
4f5f911e LP |
1074 | |
1075 | /* Only look for IPv4 addresses */ | |
5512a963 | 1076 | if (link->network->dns[i].family != AF_INET) |
4f5f911e LP |
1077 | continue; |
1078 | ||
49ad6829 LP |
1079 | ia = link->network->dns[i].address.in; |
1080 | ||
1081 | /* Never propagate obviously borked data */ | |
1082 | if (in4_addr_is_null(&ia) || in4_addr_is_localhost(&ia)) | |
1083 | continue; | |
1084 | ||
4f5f911e LP |
1085 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) |
1086 | return log_oom(); | |
1087 | ||
49ad6829 | 1088 | addresses[n_addresses++] = ia; |
4f5f911e LP |
1089 | } |
1090 | ||
5512a963 | 1091 | if (link->network->dhcp_use_dns && link->dhcp_lease) { |
4f5f911e | 1092 | const struct in_addr *da = NULL; |
072320ea | 1093 | int j, n; |
4f5f911e LP |
1094 | |
1095 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
1096 | if (n > 0) { | |
1097 | ||
1098 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
1099 | return log_oom(); | |
1100 | ||
072320ea TH |
1101 | for (j = 0; j < n; j++) |
1102 | if (in4_addr_is_non_local(&da[j])) | |
1103 | addresses[n_addresses++] = da[j]; | |
4f5f911e LP |
1104 | } |
1105 | } | |
1106 | ||
1107 | if (n_addresses <= 0) | |
1108 | return 0; | |
1109 | ||
1110 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
1111 | } | |
1112 | ||
a380b2d4 | 1113 | static int link_push_uplink_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
4f5f911e LP |
1114 | _cleanup_free_ struct in_addr *addresses = NULL; |
1115 | size_t n_addresses = 0, n_allocated = 0; | |
1116 | char **a; | |
1117 | ||
1118 | if (!link->network) | |
1119 | return 0; | |
1120 | ||
1121 | log_debug("Copying NTP server information from %s", link->ifname); | |
1122 | ||
1123 | STRV_FOREACH(a, link->network->ntp) { | |
004aadca | 1124 | union in_addr_union ia; |
4f5f911e LP |
1125 | |
1126 | /* Only look for IPv4 addresses */ | |
004aadca | 1127 | if (in_addr_from_string(AF_INET, *a, &ia) <= 0) |
4f5f911e | 1128 | continue; |
49ad6829 LP |
1129 | |
1130 | /* Never propagate obviously borked data */ | |
004aadca | 1131 | if (in4_addr_is_null(&ia.in) || in4_addr_is_localhost(&ia.in)) |
49ad6829 | 1132 | continue; |
4f5f911e LP |
1133 | |
1134 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
1135 | return log_oom(); | |
1136 | ||
004aadca | 1137 | addresses[n_addresses++] = ia.in; |
4f5f911e LP |
1138 | } |
1139 | ||
5512a963 | 1140 | if (link->network->dhcp_use_ntp && link->dhcp_lease) { |
4f5f911e | 1141 | const struct in_addr *da = NULL; |
072320ea | 1142 | int j, n; |
4f5f911e LP |
1143 | |
1144 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
1145 | if (n > 0) { | |
1146 | ||
1147 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
1148 | return log_oom(); | |
1149 | ||
072320ea TH |
1150 | for (j = 0; j < n; j++) |
1151 | if (in4_addr_is_non_local(&da[j])) | |
1152 | addresses[n_addresses++] = da[j]; | |
4f5f911e LP |
1153 | } |
1154 | } | |
1155 | ||
1156 | if (n_addresses <= 0) | |
1157 | return 0; | |
1158 | ||
1159 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
1160 | } | |
1161 | ||
f6bb7ac5 TJ |
1162 | static int link_set_bridge_fdb(Link *link) { |
1163 | FdbEntry *fdb_entry; | |
197e2809 | 1164 | int r; |
f6bb7ac5 TJ |
1165 | |
1166 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
1167 | r = fdb_entry_configure(link, fdb_entry); | |
197e2809 | 1168 | if (r < 0) |
f6bb7ac5 | 1169 | return log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
f6bb7ac5 TJ |
1170 | } |
1171 | ||
197e2809 | 1172 | return 0; |
f6bb7ac5 TJ |
1173 | } |
1174 | ||
289e6774 | 1175 | static int link_request_set_addresses(Link *link) { |
95b74ef6 | 1176 | AddressLabel *label; |
a6cc569e | 1177 | Address *ad; |
f882c247 TG |
1178 | int r; |
1179 | ||
1180 | assert(link); | |
1181 | assert(link->network); | |
f5be5601 | 1182 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 1183 | |
2428613f YW |
1184 | link_set_state(link, LINK_STATE_CONFIGURING); |
1185 | ||
1186 | /* Reset all *_configured flags we are configuring. */ | |
1187 | link->addresses_configured = false; | |
6aa5773b | 1188 | link->addresses_ready = false; |
2428613f YW |
1189 | link->neighbors_configured = false; |
1190 | link->static_routes_configured = false; | |
1191 | link->routing_policy_rules_configured = false; | |
1192 | ||
f6bb7ac5 TJ |
1193 | r = link_set_bridge_fdb(link); |
1194 | if (r < 0) | |
1195 | return r; | |
1196 | ||
f3ef324d YW |
1197 | r = link_request_set_neighbors(link); |
1198 | if (r < 0) | |
1199 | return r; | |
e4a71bf3 | 1200 | |
3d3d4255 | 1201 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
a47a6dae YW |
1202 | bool update; |
1203 | ||
1204 | update = address_get(link, ad->family, &ad->in_addr, ad->prefixlen, NULL) > 0; | |
1205 | ||
1206 | r = address_configure(ad, link, address_handler, update); | |
dd3efc09 | 1207 | if (r < 0) { |
5a8bcb67 | 1208 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 | 1209 | link_enter_failed(link); |
95b74ef6 SS |
1210 | return r; |
1211 | } | |
1212 | ||
7715629e | 1213 | link->address_messages++; |
95b74ef6 SS |
1214 | } |
1215 | ||
1216 | LIST_FOREACH(labels, label, link->network->address_labels) { | |
cccf9517 | 1217 | r = address_label_configure(label, link, NULL, false); |
95b74ef6 SS |
1218 | if (r < 0) { |
1219 | log_link_warning_errno(link, r, "Could not set address label: %m"); | |
1220 | link_enter_failed(link); | |
f5be5601 TG |
1221 | return r; |
1222 | } | |
1223 | ||
7715629e | 1224 | link->address_label_messages++; |
f882c247 TG |
1225 | } |
1226 | ||
d4cdbea5 TG |
1227 | /* now that we can figure out a default address for the dhcp server, |
1228 | start it */ | |
708c425d | 1229 | if (link_dhcp4_server_enabled(link) && (link->flags & IFF_UP)) { |
d4cdbea5 | 1230 | Address *address; |
4f5f911e LP |
1231 | Link *uplink = NULL; |
1232 | bool acquired_uplink = false; | |
d4cdbea5 TG |
1233 | |
1234 | address = link_find_dhcp_server_address(link); | |
1235 | if (!address) { | |
6a7a4e4d | 1236 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
1237 | link_enter_failed(link); |
1238 | return 0; | |
1239 | } | |
1240 | ||
61986155 | 1241 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
1242 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
1243 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
1244 | if (r < 0) |
1245 | return r; | |
1246 | ||
1247 | /* TODO: | |
1248 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
1249 | &main_address->in_addr.in); | |
1250 | if (r < 0) | |
1251 | return r; | |
d4cdbea5 TG |
1252 | */ |
1253 | ||
586ac6f7 LP |
1254 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
1255 | r = sd_dhcp_server_set_max_lease_time( | |
1256 | link->dhcp_server, | |
1257 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
1258 | if (r < 0) | |
1259 | return r; | |
1260 | } | |
1261 | ||
1262 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
1263 | r = sd_dhcp_server_set_default_lease_time( | |
1264 | link->dhcp_server, | |
1265 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
1266 | if (r < 0) | |
1267 | return r; | |
1268 | } | |
1269 | ||
1a04db0f LP |
1270 | if (link->network->dhcp_server_emit_dns) { |
1271 | ||
4f5f911e | 1272 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 1273 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
1274 | else { |
1275 | uplink = manager_find_uplink(link->manager, link); | |
1276 | acquired_uplink = true; | |
1277 | ||
1278 | if (!uplink) { | |
1279 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
1280 | r = 0; | |
1281 | } else | |
a380b2d4 | 1282 | r = link_push_uplink_dns_to_dhcp_server(uplink, link->dhcp_server); |
4f5f911e LP |
1283 | } |
1284 | if (r < 0) | |
1285 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
1286 | } |
1287 | ||
1a04db0f LP |
1288 | if (link->network->dhcp_server_emit_ntp) { |
1289 | ||
4f5f911e | 1290 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 1291 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
1292 | else { |
1293 | if (!acquired_uplink) | |
1294 | uplink = manager_find_uplink(link->manager, link); | |
1295 | ||
1296 | if (!uplink) { | |
1297 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
1298 | r = 0; | |
1299 | } else | |
a380b2d4 | 1300 | r = link_push_uplink_ntp_to_dhcp_server(uplink, link->dhcp_server); |
4f5f911e LP |
1301 | |
1302 | } | |
1303 | if (r < 0) | |
1304 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
1305 | } |
1306 | ||
77ff6022 | 1307 | r = sd_dhcp_server_set_emit_router(link->dhcp_server, link->network->dhcp_server_emit_router); |
fc95c359 YW |
1308 | if (r < 0) |
1309 | return log_link_warning_errno(link, r, "Failed to set router emission for DHCP server: %m"); | |
77ff6022 | 1310 | |
8eb9058d LP |
1311 | if (link->network->dhcp_server_emit_timezone) { |
1312 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 1313 | const char *tz = NULL; |
8eb9058d LP |
1314 | |
1315 | if (link->network->dhcp_server_timezone) | |
1316 | tz = link->network->dhcp_server_timezone; | |
1317 | else { | |
1318 | r = get_timezone(&buffer); | |
1319 | if (r < 0) | |
1320 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
1321 | else | |
1322 | tz = buffer; | |
1323 | } | |
1324 | ||
1325 | if (tz) { | |
1326 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
1327 | if (r < 0) | |
1328 | return r; | |
1329 | } | |
1330 | } | |
7da7340a RJ |
1331 | if (!sd_dhcp_server_is_running(link->dhcp_server)) { |
1332 | r = sd_dhcp_server_start(link->dhcp_server); | |
1333 | if (r < 0) { | |
1334 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); | |
8eb9058d | 1335 | |
7da7340a | 1336 | link_enter_failed(link); |
d4cdbea5 | 1337 | |
7da7340a RJ |
1338 | return 0; |
1339 | } | |
f3ef324d | 1340 | } |
d4cdbea5 | 1341 | |
6a7a4e4d | 1342 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
1343 | } |
1344 | ||
c42ff3a1 WKI |
1345 | if (link->address_messages == 0) { |
1346 | link->addresses_configured = true; | |
6aa5773b | 1347 | link_check_ready(link); |
c42ff3a1 | 1348 | } else |
6a7a4e4d | 1349 | log_link_debug(link, "Setting addresses"); |
431ca2ce | 1350 | |
f882c247 TG |
1351 | return 0; |
1352 | } | |
1353 | ||
13b498f9 TJ |
1354 | static int link_set_bridge_vlan(Link *link) { |
1355 | int r = 0; | |
1356 | ||
1357 | r = br_vlan_configure(link, link->network->pvid, link->network->br_vid_bitmap, link->network->br_untagged_bitmap); | |
1358 | if (r < 0) | |
1359 | log_link_error_errno(link, r, "Failed to assign VLANs to bridge port: %m"); | |
1360 | ||
1361 | return r; | |
1362 | } | |
1363 | ||
a60a720c | 1364 | static int link_set_proxy_arp(Link *link) { |
23d8b221 SS |
1365 | int r; |
1366 | ||
1367 | if (!link_proxy_arp_enabled(link)) | |
1368 | return 0; | |
1369 | ||
62e021a9 | 1370 | r = sysctl_write_ip_property_boolean(AF_INET, link->ifname, "proxy_arp", link->network->proxy_arp > 0); |
23d8b221 SS |
1371 | if (r < 0) |
1372 | log_link_warning_errno(link, r, "Cannot configure proxy ARP for interface: %m"); | |
1373 | ||
1374 | return 0; | |
1375 | } | |
1376 | ||
302a796f | 1377 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
e1853b00 SS |
1378 | int r; |
1379 | ||
1046bf9b YW |
1380 | assert(link); |
1381 | ||
6a7a4e4d | 1382 | log_link_debug(link, "Set link"); |
e1853b00 | 1383 | |
1c4baffc | 1384 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 1385 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 1386 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 | 1387 | link_enter_failed(link); |
e1853b00 SS |
1388 | } |
1389 | ||
0ae286e6 | 1390 | return 1; |
e1853b00 SS |
1391 | } |
1392 | ||
55dc8c4a YW |
1393 | static int link_configure_after_setting_mtu(Link *link); |
1394 | ||
302a796f | 1395 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4f882b2a TG |
1396 | int r; |
1397 | ||
1398 | assert(m); | |
1399 | assert(link); | |
1400 | assert(link->ifname); | |
1401 | ||
55dc8c4a YW |
1402 | link->setting_mtu = false; |
1403 | ||
5da8149f | 1404 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1405 | return 1; |
1406 | ||
1c4baffc | 1407 | r = sd_netlink_message_get_errno(m); |
55dc8c4a | 1408 | if (r < 0) { |
a2fae7bb | 1409 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
55dc8c4a YW |
1410 | return 1; |
1411 | } | |
1412 | ||
1413 | log_link_debug(link, "Setting MTU done."); | |
1414 | ||
bd08ce56 | 1415 | if (link->state == LINK_STATE_INITIALIZED) |
55dc8c4a | 1416 | (void) link_configure_after_setting_mtu(link); |
4f882b2a TG |
1417 | |
1418 | return 1; | |
1419 | } | |
1420 | ||
40288ece | 1421 | int link_set_mtu(Link *link, uint32_t mtu, bool force) { |
4afd3348 | 1422 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f882b2a TG |
1423 | int r; |
1424 | ||
1425 | assert(link); | |
1426 | assert(link->manager); | |
1427 | assert(link->manager->rtnl); | |
1428 | ||
40288ece YW |
1429 | if (mtu == 0 || link->setting_mtu) |
1430 | return 0; | |
1431 | ||
1432 | if (force ? link->mtu == mtu : link->mtu >= mtu) | |
ee493106 YW |
1433 | return 0; |
1434 | ||
6a7a4e4d | 1435 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1436 | |
6a7a4e4d LP |
1437 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1438 | if (r < 0) | |
1439 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1440 | |
44b598a1 | 1441 | /* If IPv6 not configured (no static IPv6 address and IPv6LL autoconfiguration is disabled) |
b102cdca | 1442 | * for this interface, then disable IPv6 else enable it. */ |
44b598a1 SS |
1443 | (void) link_enable_ipv6(link); |
1444 | ||
1445 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes | |
72c2500b YW |
1446 | * on the interface. Bump up MTU bytes to IPV6_MTU_MIN. */ |
1447 | if (link_ipv6_enabled(link) && mtu < IPV6_MIN_MTU) { | |
44b598a1 SS |
1448 | |
1449 | log_link_warning(link, "Bumping MTU to " STRINGIFY(IPV6_MIN_MTU) ", as " | |
1450 | "IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes: %m"); | |
1451 | ||
72c2500b | 1452 | mtu = IPV6_MIN_MTU; |
44b598a1 SS |
1453 | } |
1454 | ||
1c4baffc | 1455 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1456 | if (r < 0) |
1457 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1458 | |
302a796f YW |
1459 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_mtu_handler, |
1460 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1461 | if (r < 0) |
1462 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1463 | |
ae941762 | 1464 | link_ref(link); |
1046bf9b | 1465 | link->setting_mtu = true; |
b226d99b | 1466 | |
4f882b2a TG |
1467 | return 0; |
1468 | } | |
1469 | ||
302a796f | 1470 | static int set_flags_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
99d2baa2 SS |
1471 | int r; |
1472 | ||
1473 | assert(m); | |
1474 | assert(link); | |
1475 | assert(link->ifname); | |
1476 | ||
1477 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1478 | return 1; | |
1479 | ||
1480 | r = sd_netlink_message_get_errno(m); | |
1481 | if (r < 0) | |
1482 | log_link_warning_errno(link, r, "Could not set link flags: %m"); | |
1483 | ||
1484 | return 1; | |
1485 | } | |
1486 | ||
1487 | static int link_set_flags(Link *link) { | |
1488 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1489 | unsigned ifi_change = 0; | |
1490 | unsigned ifi_flags = 0; | |
1491 | int r; | |
1492 | ||
1493 | assert(link); | |
1494 | assert(link->manager); | |
1495 | assert(link->manager->rtnl); | |
1496 | ||
1497 | if (link->flags & IFF_LOOPBACK) | |
1498 | return 0; | |
1499 | ||
1500 | if (!link->network) | |
1501 | return 0; | |
1502 | ||
866e6b7a | 1503 | if (link->network->arp < 0 && link->network->multicast < 0 && link->network->allmulticast < 0) |
99d2baa2 SS |
1504 | return 0; |
1505 | ||
1506 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1507 | if (r < 0) | |
1508 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1509 | ||
1510 | if (link->network->arp >= 0) { | |
1511 | ifi_change |= IFF_NOARP; | |
e6ebebbe SS |
1512 | SET_FLAG(ifi_flags, IFF_NOARP, link->network->arp == 0); |
1513 | } | |
1514 | ||
1515 | if (link->network->multicast >= 0) { | |
1516 | ifi_change |= IFF_MULTICAST; | |
1517 | SET_FLAG(ifi_flags, IFF_MULTICAST, link->network->multicast); | |
99d2baa2 SS |
1518 | } |
1519 | ||
866e6b7a SS |
1520 | if (link->network->allmulticast >= 0) { |
1521 | ifi_change |= IFF_ALLMULTI; | |
1522 | SET_FLAG(ifi_flags, IFF_ALLMULTI, link->network->allmulticast); | |
1523 | } | |
1524 | ||
99d2baa2 SS |
1525 | r = sd_rtnl_message_link_set_flags(req, ifi_flags, ifi_change); |
1526 | if (r < 0) | |
1527 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
1528 | ||
302a796f YW |
1529 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_flags_handler, |
1530 | link_netlink_destroy_callback, link); | |
99d2baa2 SS |
1531 | if (r < 0) |
1532 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1533 | ||
1534 | link_ref(link); | |
1535 | ||
1536 | return 0; | |
1537 | } | |
1538 | ||
e1853b00 | 1539 | static int link_set_bridge(Link *link) { |
4afd3348 | 1540 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
e1853b00 SS |
1541 | int r; |
1542 | ||
1543 | assert(link); | |
1544 | assert(link->network); | |
1545 | ||
6a7a4e4d LP |
1546 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1547 | if (r < 0) | |
1548 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1549 | |
1550 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1551 | if (r < 0) |
1552 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1553 | |
1c4baffc | 1554 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1555 | if (r < 0) |
1556 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1557 | |
7f9915f0 SS |
1558 | if (link->network->use_bpdu >= 0) { |
1559 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, link->network->use_bpdu); | |
1560 | if (r < 0) | |
1561 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1562 | } | |
eb7ff4dd | 1563 | |
7f9915f0 SS |
1564 | if (link->network->hairpin >= 0) { |
1565 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1566 | if (r < 0) | |
1567 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1568 | } | |
eb7ff4dd | 1569 | |
7f9915f0 SS |
1570 | if (link->network->fast_leave >= 0) { |
1571 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1572 | if (r < 0) | |
1573 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1574 | } | |
eb7ff4dd | 1575 | |
7f9915f0 SS |
1576 | if (link->network->allow_port_to_be_root >= 0) { |
1577 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, link->network->allow_port_to_be_root); | |
1578 | if (r < 0) | |
1579 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
7f9915f0 SS |
1580 | } |
1581 | ||
1582 | if (link->network->unicast_flood >= 0) { | |
1583 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1584 | if (r < 0) | |
1585 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
d3aa8b49 | 1586 | } |
7f9915f0 | 1587 | |
7f15b714 TJ |
1588 | if (link->network->multicast_flood >= 0) { |
1589 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_FLOOD, link->network->multicast_flood); | |
1590 | if (r < 0) | |
1591 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MCAST_FLOOD attribute: %m"); | |
1592 | } | |
1593 | ||
d3aa8b49 SS |
1594 | if (link->network->multicast_to_unicast >= 0) { |
1595 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_TO_UCAST, link->network->multicast_to_unicast); | |
1596 | if (r < 0) | |
1597 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MCAST_TO_UCAST attribute: %m"); | |
7f9915f0 | 1598 | } |
eb7ff4dd | 1599 | |
7f15b714 TJ |
1600 | if (link->network->neighbor_suppression >= 0) { |
1601 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_NEIGH_SUPPRESS, link->network->neighbor_suppression); | |
1602 | if (r < 0) | |
1603 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_NEIGH_SUPPRESS attribute: %m"); | |
1604 | } | |
1605 | ||
1606 | if (link->network->learning >= 0) { | |
1607 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_LEARNING, link->network->learning); | |
1608 | if (r < 0) | |
1609 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_LEARNING attribute: %m"); | |
1610 | } | |
1611 | ||
1087623b SS |
1612 | if (link->network->bridge_proxy_arp >= 0) { |
1613 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROXYARP, link->network->bridge_proxy_arp); | |
1614 | if (r < 0) | |
1615 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROXYARP attribute: %m"); | |
1616 | } | |
1617 | ||
1618 | if (link->network->bridge_proxy_arp_wifi >= 0) { | |
1619 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROXYARP_WIFI, link->network->bridge_proxy_arp_wifi); | |
1620 | if (r < 0) | |
1621 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROXYARP_WIFI attribute: %m"); | |
1622 | } | |
1623 | ||
34437b4f | 1624 | if (link->network->cost != 0) { |
1c4baffc | 1625 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1626 | if (r < 0) |
1627 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 | 1628 | } |
d3aa8b49 | 1629 | |
b56be296 DJL |
1630 | if (link->network->priority != LINK_BRIDGE_PORT_PRIORITY_INVALID) { |
1631 | r = sd_netlink_message_append_u16(req, IFLA_BRPORT_PRIORITY, link->network->priority); | |
1632 | if (r < 0) | |
1633 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PRIORITY attribute: %m"); | |
1634 | } | |
e1853b00 | 1635 | |
0fadb2a4 SS |
1636 | if (link->network->multicast_router != _MULTICAST_ROUTER_INVALID) { |
1637 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MULTICAST_ROUTER, link->network->multicast_router); | |
1638 | if (r < 0) | |
1639 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MULTICAST_ROUTER attribute: %m"); | |
1640 | } | |
1641 | ||
1c4baffc | 1642 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1643 | if (r < 0) |
1644 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1645 | |
302a796f YW |
1646 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_set_handler, |
1647 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1648 | if (r < 0) |
1649 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1650 | |
1651 | link_ref(link); | |
1652 | ||
1653 | return r; | |
1654 | } | |
1655 | ||
7fcee284 YW |
1656 | static int link_set_bond_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1657 | int r; | |
1658 | ||
1659 | assert(m); | |
1660 | assert(link); | |
1661 | assert(link->ifname); | |
1662 | ||
1663 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1664 | return 1; | |
1665 | ||
1666 | r = sd_netlink_message_get_errno(m); | |
1667 | if (r < 0) { | |
1668 | log_link_warning_errno(link, r, "Could not set bonding interface: %m"); | |
1669 | return 1; | |
1670 | } | |
1671 | ||
1672 | return 1; | |
1673 | } | |
1674 | ||
1675 | static int link_set_bond(Link *link) { | |
eb64b435 SS |
1676 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
1677 | int r; | |
1678 | ||
1679 | assert(link); | |
1680 | assert(link->network); | |
1681 | ||
1682 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_NEWLINK, link->network->bond->ifindex); | |
1683 | if (r < 0) | |
1684 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1685 | ||
1686 | r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK); | |
1687 | if (r < 0) | |
1688 | return log_link_error_errno(link, r, "Could not set netlink flags: %m"); | |
1689 | ||
1690 | r = sd_netlink_message_open_container(req, IFLA_LINKINFO); | |
1691 | if (r < 0) | |
1692 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
1693 | ||
1694 | r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, "bond"); | |
1695 | if (r < 0) | |
1696 | return log_link_error_errno(link, r, "Could not append IFLA_INFO_DATA attribute: %m"); | |
1697 | ||
1698 | if (link->network->active_slave) { | |
1699 | r = sd_netlink_message_append_u32(req, IFLA_BOND_ACTIVE_SLAVE, link->ifindex); | |
1700 | if (r < 0) | |
1701 | return log_link_error_errno(link, r, "Could not append IFLA_BOND_ACTIVE_SLAVE attribute: %m"); | |
1702 | } | |
1703 | ||
1704 | if (link->network->primary_slave) { | |
1705 | r = sd_netlink_message_append_u32(req, IFLA_BOND_PRIMARY, link->ifindex); | |
1706 | if (r < 0) | |
1707 | return log_link_error_errno(link, r, "Could not append IFLA_BOND_PRIMARY attribute: %m"); | |
1708 | } | |
1709 | ||
1710 | r = sd_netlink_message_close_container(req); | |
1711 | if (r < 0) | |
1712 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
1713 | ||
1714 | r = sd_netlink_message_close_container(req); | |
1715 | if (r < 0) | |
1716 | return log_link_error_errno(link, r, "Could not append IFLA_INFO_DATA attribute: %m"); | |
1717 | ||
7fcee284 | 1718 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_set_bond_handler, |
302a796f | 1719 | link_netlink_destroy_callback, link); |
eb64b435 SS |
1720 | if (r < 0) |
1721 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1722 | ||
1723 | link_ref(link); | |
1724 | ||
1725 | return r; | |
1726 | } | |
1727 | ||
34437b4f LP |
1728 | static int link_lldp_save(Link *link) { |
1729 | _cleanup_free_ char *temp_path = NULL; | |
1730 | _cleanup_fclose_ FILE *f = NULL; | |
1731 | sd_lldp_neighbor **l = NULL; | |
1732 | int n = 0, r, i; | |
49699bac SS |
1733 | |
1734 | assert(link); | |
34437b4f LP |
1735 | assert(link->lldp_file); |
1736 | ||
1737 | if (!link->lldp) { | |
1738 | (void) unlink(link->lldp_file); | |
1739 | return 0; | |
1740 | } | |
1741 | ||
1742 | r = sd_lldp_get_neighbors(link->lldp, &l); | |
1743 | if (r < 0) | |
1744 | goto finish; | |
1745 | if (r == 0) { | |
1746 | (void) unlink(link->lldp_file); | |
1747 | goto finish; | |
1748 | } | |
1749 | ||
1750 | n = r; | |
1751 | ||
1752 | r = fopen_temporary(link->lldp_file, &f, &temp_path); | |
1753 | if (r < 0) | |
1754 | goto finish; | |
1755 | ||
1756 | fchmod(fileno(f), 0644); | |
49699bac | 1757 | |
34437b4f LP |
1758 | for (i = 0; i < n; i++) { |
1759 | const void *p; | |
1760 | le64_t u; | |
1761 | size_t sz; | |
1762 | ||
1763 | r = sd_lldp_neighbor_get_raw(l[i], &p, &sz); | |
9ef61f2e | 1764 | if (r < 0) |
34437b4f LP |
1765 | goto finish; |
1766 | ||
1767 | u = htole64(sz); | |
1768 | (void) fwrite(&u, 1, sizeof(u), f); | |
1769 | (void) fwrite(p, 1, sz, f); | |
1770 | } | |
49699bac | 1771 | |
34437b4f LP |
1772 | r = fflush_and_check(f); |
1773 | if (r < 0) | |
1774 | goto finish; | |
1775 | ||
1776 | if (rename(temp_path, link->lldp_file) < 0) { | |
1777 | r = -errno; | |
1778 | goto finish; | |
9ef61f2e | 1779 | } |
34437b4f LP |
1780 | |
1781 | finish: | |
1782 | if (r < 0) { | |
1783 | (void) unlink(link->lldp_file); | |
1784 | if (temp_path) | |
1785 | (void) unlink(temp_path); | |
1786 | ||
1787 | log_link_error_errno(link, r, "Failed to save LLDP data to %s: %m", link->lldp_file); | |
1788 | } | |
1789 | ||
1790 | if (l) { | |
1791 | for (i = 0; i < n; i++) | |
1792 | sd_lldp_neighbor_unref(l[i]); | |
1793 | free(l); | |
1794 | } | |
1795 | ||
1796 | return r; | |
1797 | } | |
1798 | ||
90dffb22 | 1799 | static void lldp_handler(sd_lldp *lldp, sd_lldp_event event, sd_lldp_neighbor *n, void *userdata) { |
34437b4f | 1800 | Link *link = userdata; |
90dffb22 | 1801 | int r; |
34437b4f LP |
1802 | |
1803 | assert(link); | |
1804 | ||
1805 | (void) link_lldp_save(link); | |
90dffb22 | 1806 | |
7272b25e | 1807 | if (link_lldp_emit_enabled(link) && event == SD_LLDP_EVENT_ADDED) { |
90dffb22 LP |
1808 | /* If we received information about a new neighbor, restart the LLDP "fast" logic */ |
1809 | ||
1810 | log_link_debug(link, "Received LLDP datagram from previously unknown neighbor, restarting 'fast' LLDP transmission."); | |
1811 | ||
7272b25e | 1812 | r = link_lldp_emit_start(link); |
90dffb22 LP |
1813 | if (r < 0) |
1814 | log_link_warning_errno(link, r, "Failed to restart LLDP transmission: %m"); | |
1815 | } | |
49699bac SS |
1816 | } |
1817 | ||
e7ab854c TG |
1818 | static int link_acquire_ipv6_conf(Link *link) { |
1819 | int r; | |
1820 | ||
1821 | assert(link); | |
1822 | ||
e7ab854c | 1823 | if (link_ipv6_accept_ra_enabled(link)) { |
1e7a0e21 | 1824 | assert(link->ndisc); |
e7ab854c TG |
1825 | |
1826 | log_link_debug(link, "Discovering IPv6 routers"); | |
1827 | ||
1e7a0e21 | 1828 | r = sd_ndisc_start(link->ndisc); |
63348d13 | 1829 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1830 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
1831 | } | |
1832 | ||
7465dd22 PF |
1833 | if (link_radv_enabled(link)) { |
1834 | assert(link->radv); | |
1835 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); | |
1836 | ||
1837 | log_link_debug(link, "Starting IPv6 Router Advertisements"); | |
1838 | ||
1839 | r = sd_radv_start(link->radv); | |
1840 | if (r < 0 && r != -EBUSY) | |
1841 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Advertisement: %m"); | |
1842 | } | |
1843 | ||
10752343 PF |
1844 | (void) dhcp6_request_prefix_delegation(link); |
1845 | ||
e7ab854c TG |
1846 | return 0; |
1847 | } | |
1848 | ||
6fc25497 | 1849 | static int link_acquire_ipv4_conf(Link *link) { |
ff254138 TG |
1850 | int r; |
1851 | ||
1852 | assert(link); | |
ff254138 TG |
1853 | assert(link->manager); |
1854 | assert(link->manager->event); | |
1855 | ||
78c958f8 | 1856 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1857 | assert(link->ipv4ll); |
ff254138 | 1858 | |
6a7a4e4d | 1859 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1860 | |
1861 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1862 | if (r < 0) |
1863 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1864 | } |
1865 | ||
78c958f8 | 1866 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1867 | assert(link->dhcp_client); |
ff254138 | 1868 | |
6a7a4e4d | 1869 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1870 | |
5c1d3fc9 | 1871 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1872 | if (r < 0) |
1873 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1874 | } |
ff254138 | 1875 | |
6fc25497 SS |
1876 | return 0; |
1877 | } | |
1878 | ||
1879 | static int link_acquire_conf(Link *link) { | |
1880 | int r; | |
1881 | ||
1882 | assert(link); | |
1883 | ||
1884 | r = link_acquire_ipv4_conf(link); | |
1885 | if (r < 0) | |
1886 | return r; | |
1887 | ||
3f7cc080 | 1888 | if (!in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) { |
6fc25497 SS |
1889 | r = link_acquire_ipv6_conf(link); |
1890 | if (r < 0) | |
1891 | return r; | |
1892 | } | |
1893 | ||
7272b25e LP |
1894 | if (link_lldp_emit_enabled(link)) { |
1895 | r = link_lldp_emit_start(link); | |
8e1ad1ea LP |
1896 | if (r < 0) |
1897 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
1898 | } | |
1899 | ||
ff254138 TG |
1900 | return 0; |
1901 | } | |
1902 | ||
a61bb41c | 1903 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1904 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1905 | ||
a61bb41c | 1906 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1907 | return true; |
1908 | ||
a61bb41c | 1909 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1910 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1911 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1912 | return true; |
1913 | ||
1914 | return false; | |
1915 | } | |
1916 | ||
0e2fdb83 SS |
1917 | static int link_address_genmode_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1918 | int r; | |
1919 | ||
1920 | assert(link); | |
1921 | ||
1922 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1923 | return 1; | |
1924 | ||
1925 | r = sd_netlink_message_get_errno(m); | |
1926 | if (r < 0) | |
1927 | log_link_warning_errno(link, r, "Could not set address genmode for interface: %m"); | |
1928 | ||
1929 | return 1; | |
1930 | } | |
1931 | ||
1932 | static int link_configure_addrgen_mode(Link *link) { | |
1933 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1934 | uint8_t ipv6ll_mode; | |
1935 | int r; | |
1936 | ||
1937 | assert(link); | |
1938 | assert(link->network); | |
1939 | assert(link->manager); | |
1940 | assert(link->manager->rtnl); | |
1941 | ||
1942 | log_link_debug(link, "Setting address genmode for link"); | |
1943 | ||
1944 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1945 | if (r < 0) | |
1946 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1947 | ||
1948 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); | |
1949 | if (r < 0) | |
1950 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
1951 | ||
1952 | r = sd_netlink_message_open_container(req, AF_INET6); | |
1953 | if (r < 0) | |
1954 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
1955 | ||
1956 | if (!link_ipv6ll_enabled(link)) | |
1957 | ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE; | |
826a3602 | 1958 | else if (sysctl_read_ip_property(AF_INET6, link->ifname, "stable_secret", NULL) < 0) |
0e2fdb83 | 1959 | /* The file may not exist. And event if it exists, when stable_secret is unset, |
826a3602 YW |
1960 | * reading the file fails with EIO. */ |
1961 | ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64; | |
1962 | else | |
1963 | ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
0e2fdb83 SS |
1964 | |
1965 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); | |
1966 | if (r < 0) | |
1967 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
1968 | ||
1969 | r = sd_netlink_message_close_container(req); | |
1970 | if (r < 0) | |
1971 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); | |
1972 | ||
1973 | r = sd_netlink_message_close_container(req); | |
1974 | if (r < 0) | |
1975 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
1976 | ||
1977 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_address_genmode_handler, | |
1978 | link_netlink_destroy_callback, link); | |
1979 | if (r < 0) | |
1980 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1981 | ||
1982 | link_ref(link); | |
1983 | ||
1984 | return 0; | |
1985 | } | |
1986 | ||
302a796f | 1987 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
dd3efc09 TG |
1988 | int r; |
1989 | ||
1746cf2a TG |
1990 | assert(link); |
1991 | ||
5da8149f | 1992 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1993 | return 1; |
1994 | ||
1c4baffc | 1995 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d | 1996 | if (r < 0) |
26d6b214 | 1997 | /* we warn but don't fail the link, as it may be brought up later */ |
a2fae7bb | 1998 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 1999 | |
f882c247 TG |
2000 | return 1; |
2001 | } | |
2002 | ||
1cc84f3b | 2003 | static int link_up(Link *link) { |
4afd3348 | 2004 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
f579559b TG |
2005 | int r; |
2006 | ||
f882c247 | 2007 | assert(link); |
c106cc36 | 2008 | assert(link->network); |
f882c247 TG |
2009 | assert(link->manager); |
2010 | assert(link->manager->rtnl); | |
2011 | ||
6a7a4e4d | 2012 | log_link_debug(link, "Bringing link up"); |
449f7554 | 2013 | |
6a7a4e4d LP |
2014 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
2015 | if (r < 0) | |
2016 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 2017 | |
2b2d8603 | 2018 | /* set it free if not enslaved with networkd */ |
6cb955c6 | 2019 | if (!link->network->bridge && !link->network->bond && !link->network->vrf) { |
2b2d8603 TY |
2020 | r = sd_netlink_message_append_u32(req, IFLA_MASTER, 0); |
2021 | if (r < 0) | |
2022 | return log_link_error_errno(link, r, "Could not append IFLA_MASTER attribute: %m"); | |
2023 | } | |
2024 | ||
5d4795f3 | 2025 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
2026 | if (r < 0) |
2027 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 2028 | |
c106cc36 | 2029 | if (link->network->mac) { |
1c4baffc | 2030 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
2031 | if (r < 0) |
2032 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
2033 | } |
2034 | ||
439689c6 | 2035 | if (link_ipv6_enabled(link)) { |
4eb086a3 SS |
2036 | uint8_t ipv6ll_mode; |
2037 | ||
0e2fdb83 SS |
2038 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
2039 | if (r < 0) | |
2040 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
2041 | ||
01d28f81 | 2042 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ |
1c4baffc | 2043 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
2044 | if (r < 0) |
2045 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 2046 | |
01d28f81 | 2047 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 2048 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
2049 | if (r < 0) |
2050 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
2051 | } | |
2052 | ||
4eb086a3 SS |
2053 | if (!link_ipv6ll_enabled(link)) |
2054 | ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE; | |
2055 | else if (sysctl_read_ip_property(AF_INET6, link->ifname, "stable_secret", NULL) < 0) | |
2056 | /* The file may not exist. And event if it exists, when stable_secret is unset, | |
2057 | * reading the file fails with EIO. */ | |
2058 | ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64; | |
2059 | else | |
2060 | ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
2061 | ||
2062 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); | |
2063 | if (r < 0) | |
2064 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
2065 | ||
1c4baffc | 2066 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 2067 | if (r < 0) |
01d28f81 | 2068 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
d0d6a4cd | 2069 | |
0e2fdb83 SS |
2070 | r = sd_netlink_message_close_container(req); |
2071 | if (r < 0) | |
2072 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
2073 | } | |
d0d6a4cd | 2074 | |
302a796f YW |
2075 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_up_handler, |
2076 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
2077 | if (r < 0) |
2078 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 2079 | |
b226d99b TG |
2080 | link_ref(link); |
2081 | ||
f882c247 TG |
2082 | return 0; |
2083 | } | |
2084 | ||
bd5038f8 MKB |
2085 | static int link_up_can(Link *link) { |
2086 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
2087 | int r; | |
2088 | ||
2089 | assert(link); | |
2090 | ||
2091 | log_link_debug(link, "Bringing CAN link up"); | |
2092 | ||
2093 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
2094 | if (r < 0) | |
2095 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
2096 | ||
2097 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); | |
2098 | if (r < 0) | |
2099 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
2100 | ||
302a796f YW |
2101 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_up_handler, |
2102 | link_netlink_destroy_callback, link); | |
bd5038f8 MKB |
2103 | if (r < 0) |
2104 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
2105 | ||
2106 | link_ref(link); | |
2107 | ||
2108 | return 0; | |
2109 | } | |
2110 | ||
06828bb6 HP |
2111 | static int link_set_can(Link *link) { |
2112 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; | |
2113 | int r; | |
2114 | ||
2115 | assert(link); | |
2116 | assert(link->network); | |
2117 | assert(link->manager); | |
2118 | assert(link->manager->rtnl); | |
2119 | ||
2120 | log_link_debug(link, "link_set_can"); | |
2121 | ||
2122 | r = sd_rtnl_message_new_link(link->manager->rtnl, &m, RTM_NEWLINK, link->ifindex); | |
2123 | if (r < 0) | |
2124 | return log_link_error_errno(link, r, "Failed to allocate netlink message: %m"); | |
2125 | ||
2126 | r = sd_netlink_message_set_flags(m, NLM_F_REQUEST | NLM_F_ACK); | |
2127 | if (r < 0) | |
2128 | return log_link_error_errno(link, r, "Could not set netlink flags: %m"); | |
2129 | ||
2130 | r = sd_netlink_message_open_container(m, IFLA_LINKINFO); | |
2131 | if (r < 0) | |
2132 | return log_link_error_errno(link, r, "Failed to open netlink container: %m"); | |
2133 | ||
2134 | r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, link->kind); | |
2135 | if (r < 0) | |
2136 | return log_link_error_errno(link, r, "Could not append IFLA_INFO_DATA attribute: %m"); | |
2137 | ||
2138 | if (link->network->can_bitrate > 0 || link->network->can_sample_point > 0) { | |
2139 | struct can_bittiming bt = { | |
2140 | .bitrate = link->network->can_bitrate, | |
2141 | .sample_point = link->network->can_sample_point, | |
2142 | }; | |
2143 | ||
2144 | if (link->network->can_bitrate > UINT32_MAX) { | |
2145 | log_link_error(link, "bitrate (%zu) too big.", link->network->can_bitrate); | |
2146 | return -ERANGE; | |
2147 | } | |
2148 | ||
2149 | log_link_debug(link, "Setting bitrate = %d bit/s", bt.bitrate); | |
2150 | if (link->network->can_sample_point > 0) | |
2151 | log_link_debug(link, "Setting sample point = %d.%d%%", bt.sample_point / 10, bt.sample_point % 10); | |
2152 | else | |
2153 | log_link_debug(link, "Using default sample point"); | |
2154 | ||
2155 | r = sd_netlink_message_append_data(m, IFLA_CAN_BITTIMING, &bt, sizeof(bt)); | |
2156 | if (r < 0) | |
2157 | return log_link_error_errno(link, r, "Could not append IFLA_CAN_BITTIMING attribute: %m"); | |
2158 | } | |
2159 | ||
2160 | if (link->network->can_restart_us > 0) { | |
2161 | char time_string[FORMAT_TIMESPAN_MAX]; | |
2162 | uint64_t restart_ms; | |
2163 | ||
2164 | if (link->network->can_restart_us == USEC_INFINITY) | |
2165 | restart_ms = 0; | |
2166 | else | |
2167 | restart_ms = DIV_ROUND_UP(link->network->can_restart_us, USEC_PER_MSEC); | |
2168 | ||
2169 | format_timespan(time_string, FORMAT_TIMESPAN_MAX, restart_ms * 1000, MSEC_PER_SEC); | |
2170 | ||
2171 | if (restart_ms > UINT32_MAX) { | |
2172 | log_link_error(link, "restart timeout (%s) too big.", time_string); | |
2173 | return -ERANGE; | |
2174 | } | |
2175 | ||
2176 | log_link_debug(link, "Setting restart = %s", time_string); | |
2177 | ||
2178 | r = sd_netlink_message_append_u32(m, IFLA_CAN_RESTART_MS, restart_ms); | |
2179 | if (r < 0) | |
2180 | return log_link_error_errno(link, r, "Could not append IFLA_CAN_RESTART_MS attribute: %m"); | |
2181 | } | |
2182 | ||
c423be28 CG |
2183 | if (link->network->can_triple_sampling >= 0) { |
2184 | struct can_ctrlmode cm = { | |
2185 | .mask = CAN_CTRLMODE_3_SAMPLES, | |
2186 | .flags = link->network->can_triple_sampling ? CAN_CTRLMODE_3_SAMPLES : 0, | |
2187 | }; | |
2188 | ||
2189 | log_link_debug(link, "%sabling triple-sampling", link->network->can_triple_sampling ? "En" : "Dis"); | |
2190 | ||
2191 | r = sd_netlink_message_append_data(m, IFLA_CAN_CTRLMODE, &cm, sizeof(cm)); | |
2192 | if (r < 0) | |
2193 | return log_link_error_errno(link, r, "Could not append IFLA_CAN_CTRLMODE attribute: %m"); | |
2194 | } | |
2195 | ||
06828bb6 HP |
2196 | r = sd_netlink_message_close_container(m); |
2197 | if (r < 0) | |
2198 | return log_link_error_errno(link, r, "Failed to close netlink container: %m"); | |
2199 | ||
2200 | r = sd_netlink_message_close_container(m); | |
2201 | if (r < 0) | |
2202 | return log_link_error_errno(link, r, "Failed to close netlink container: %m"); | |
2203 | ||
302a796f YW |
2204 | r = netlink_call_async(link->manager->rtnl, NULL, m, link_set_handler, |
2205 | link_netlink_destroy_callback, link); | |
06828bb6 HP |
2206 | if (r < 0) |
2207 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
2208 | ||
2209 | link_ref(link); | |
2210 | ||
2211 | if (!(link->flags & IFF_UP)) { | |
2212 | r = link_up_can(link); | |
2213 | if (r < 0) { | |
2214 | link_enter_failed(link); | |
2215 | return r; | |
2216 | } | |
2217 | } | |
2218 | ||
2219 | log_link_debug(link, "link_set_can done"); | |
2220 | ||
2221 | return r; | |
2222 | } | |
2223 | ||
302a796f | 2224 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
0d4ad91d AR |
2225 | int r; |
2226 | ||
2227 | assert(link); | |
2228 | ||
2229 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
2230 | return 1; | |
2231 | ||
1c4baffc | 2232 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 2233 | if (r < 0) |
a2fae7bb | 2234 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d | 2235 | |
1046bf9b | 2236 | if (streq_ptr(link->kind, "can")) |
06828bb6 | 2237 | link_set_can(link); |
06828bb6 | 2238 | |
0d4ad91d AR |
2239 | return 1; |
2240 | } | |
2241 | ||
14b6bb77 | 2242 | int link_down(Link *link) { |
4afd3348 | 2243 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
0d4ad91d AR |
2244 | int r; |
2245 | ||
2246 | assert(link); | |
2247 | assert(link->manager); | |
2248 | assert(link->manager->rtnl); | |
2249 | ||
6a7a4e4d | 2250 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
2251 | |
2252 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
2253 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
2254 | if (r < 0) |
2255 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
2256 | |
2257 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
2258 | if (r < 0) |
2259 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 2260 | |
302a796f YW |
2261 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_down_handler, |
2262 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
2263 | if (r < 0) |
2264 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
2265 | |
2266 | link_ref(link); | |
2267 | ||
2268 | return 0; | |
2269 | } | |
2270 | ||
2271 | static int link_handle_bound_to_list(Link *link) { | |
2272 | Link *l; | |
2273 | Iterator i; | |
2274 | int r; | |
2275 | bool required_up = false; | |
2276 | bool link_is_up = false; | |
2277 | ||
2278 | assert(link); | |
2279 | ||
2280 | if (hashmap_isempty(link->bound_to_links)) | |
2281 | return 0; | |
2282 | ||
2283 | if (link->flags & IFF_UP) | |
2284 | link_is_up = true; | |
2285 | ||
2286 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
2287 | if (link_has_carrier(l)) { | |
2288 | required_up = true; | |
2289 | break; | |
2290 | } | |
2291 | ||
2292 | if (!required_up && link_is_up) { | |
2293 | r = link_down(link); | |
2294 | if (r < 0) | |
2295 | return r; | |
2296 | } else if (required_up && !link_is_up) { | |
2297 | r = link_up(link); | |
2298 | if (r < 0) | |
2299 | return r; | |
2300 | } | |
2301 | ||
2302 | return 0; | |
2303 | } | |
2304 | ||
2305 | static int link_handle_bound_by_list(Link *link) { | |
2306 | Iterator i; | |
2307 | Link *l; | |
2308 | int r; | |
2309 | ||
2310 | assert(link); | |
2311 | ||
2312 | if (hashmap_isempty(link->bound_by_links)) | |
2313 | return 0; | |
2314 | ||
2315 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
2316 | r = link_handle_bound_to_list(l); | |
2317 | if (r < 0) | |
2318 | return r; | |
2319 | } | |
2320 | ||
2321 | return 0; | |
2322 | } | |
2323 | ||
2324 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
2325 | int r; | |
2326 | ||
2327 | assert(link); | |
2328 | assert(carrier); | |
2329 | ||
2330 | if (link == carrier) | |
2331 | return 0; | |
2332 | ||
2333 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
2334 | return 0; | |
2335 | ||
2336 | r = hashmap_ensure_allocated(h, NULL); | |
2337 | if (r < 0) | |
2338 | return r; | |
2339 | ||
2340 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
2341 | if (r < 0) | |
2342 | return r; | |
2343 | ||
2344 | return 0; | |
2345 | } | |
2346 | ||
2347 | static int link_new_bound_by_list(Link *link) { | |
2348 | Manager *m; | |
2349 | Link *carrier; | |
2350 | Iterator i; | |
2351 | int r; | |
2352 | bool list_updated = false; | |
2353 | ||
2354 | assert(link); | |
2355 | assert(link->manager); | |
2356 | ||
2357 | m = link->manager; | |
2358 | ||
b295beea | 2359 | HASHMAP_FOREACH(carrier, m->links, i) { |
0d4ad91d AR |
2360 | if (!carrier->network) |
2361 | continue; | |
2362 | ||
2363 | if (strv_isempty(carrier->network->bind_carrier)) | |
2364 | continue; | |
2365 | ||
2366 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
2367 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
2368 | if (r < 0) | |
2369 | return r; | |
2370 | ||
2371 | list_updated = true; | |
2372 | } | |
2373 | } | |
2374 | ||
2375 | if (list_updated) | |
84de38c5 | 2376 | link_dirty(link); |
0d4ad91d | 2377 | |
b295beea | 2378 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
0d4ad91d AR |
2379 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
2380 | if (r < 0) | |
2381 | return r; | |
2382 | ||
84de38c5 | 2383 | link_dirty(carrier); |
0d4ad91d AR |
2384 | } |
2385 | ||
2386 | return 0; | |
2387 | } | |
2388 | ||
2389 | static int link_new_bound_to_list(Link *link) { | |
2390 | Manager *m; | |
2391 | Link *carrier; | |
2392 | Iterator i; | |
2393 | int r; | |
2394 | bool list_updated = false; | |
2395 | ||
2396 | assert(link); | |
2397 | assert(link->manager); | |
2398 | ||
2399 | if (!link->network) | |
2400 | return 0; | |
2401 | ||
2402 | if (strv_isempty(link->network->bind_carrier)) | |
2403 | return 0; | |
2404 | ||
2405 | m = link->manager; | |
2406 | ||
2407 | HASHMAP_FOREACH (carrier, m->links, i) { | |
2408 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
2409 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
2410 | if (r < 0) | |
2411 | return r; | |
2412 | ||
2413 | list_updated = true; | |
2414 | } | |
2415 | } | |
2416 | ||
2417 | if (list_updated) | |
84de38c5 | 2418 | link_dirty(link); |
0d4ad91d AR |
2419 | |
2420 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
2421 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
2422 | if (r < 0) | |
2423 | return r; | |
2424 | ||
84de38c5 | 2425 | link_dirty(carrier); |
0d4ad91d AR |
2426 | } |
2427 | ||
2428 | return 0; | |
2429 | } | |
2430 | ||
2431 | static int link_new_carrier_maps(Link *link) { | |
2432 | int r; | |
2433 | ||
2434 | r = link_new_bound_by_list(link); | |
2435 | if (r < 0) | |
2436 | return r; | |
2437 | ||
2438 | r = link_handle_bound_by_list(link); | |
2439 | if (r < 0) | |
2440 | return r; | |
2441 | ||
2442 | r = link_new_bound_to_list(link); | |
2443 | if (r < 0) | |
2444 | return r; | |
2445 | ||
2446 | r = link_handle_bound_to_list(link); | |
2447 | if (r < 0) | |
2448 | return r; | |
2449 | ||
2450 | return 0; | |
2451 | } | |
2452 | ||
2453 | static void link_free_bound_to_list(Link *link) { | |
2454 | Link *bound_to; | |
2455 | Iterator i; | |
2456 | ||
2457 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
2458 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
2459 | ||
2460 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 2461 | link_dirty(bound_to); |
0d4ad91d AR |
2462 | } |
2463 | ||
2464 | return; | |
2465 | } | |
2466 | ||
2467 | static void link_free_bound_by_list(Link *link) { | |
2468 | Link *bound_by; | |
2469 | Iterator i; | |
2470 | ||
2471 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
2472 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
2473 | ||
2474 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 2475 | link_dirty(bound_by); |
0d4ad91d AR |
2476 | link_handle_bound_to_list(bound_by); |
2477 | } | |
2478 | } | |
2479 | ||
2480 | return; | |
2481 | } | |
2482 | ||
2483 | static void link_free_carrier_maps(Link *link) { | |
2484 | bool list_updated = false; | |
2485 | ||
2486 | assert(link); | |
2487 | ||
2488 | if (!hashmap_isempty(link->bound_to_links)) { | |
2489 | link_free_bound_to_list(link); | |
2490 | list_updated = true; | |
2491 | } | |
2492 | ||
2493 | if (!hashmap_isempty(link->bound_by_links)) { | |
2494 | link_free_bound_by_list(link); | |
2495 | list_updated = true; | |
2496 | } | |
2497 | ||
2498 | if (list_updated) | |
84de38c5 | 2499 | link_dirty(link); |
0d4ad91d AR |
2500 | |
2501 | return; | |
2502 | } | |
2503 | ||
5f707e12 YW |
2504 | static int link_append_to_master(Link *link, NetDev *netdev) { |
2505 | Link *master; | |
2506 | int r; | |
2507 | ||
2508 | assert(link); | |
2509 | assert(netdev); | |
2510 | ||
2511 | r = link_get(link->manager, netdev->ifindex, &master); | |
2512 | if (r < 0) | |
2513 | return r; | |
2514 | ||
2515 | r = set_ensure_allocated(&master->slaves, NULL); | |
2516 | if (r < 0) | |
2517 | return r; | |
2518 | ||
2519 | r = set_put(master->slaves, link); | |
2520 | if (r < 0) | |
2521 | return r; | |
2522 | ||
2523 | link_ref(link); | |
2524 | return 0; | |
2525 | } | |
2526 | ||
2527 | static void link_drop_from_master(Link *link, NetDev *netdev) { | |
2528 | Link *master; | |
2529 | ||
2530 | assert(link); | |
2531 | ||
2532 | if (!link->manager || !netdev) | |
2533 | return; | |
2534 | ||
2535 | if (link_get(link->manager, netdev->ifindex, &master) < 0) | |
2536 | return; | |
2537 | ||
2538 | link_unref(set_remove(master->slaves, link)); | |
2539 | } | |
2540 | ||
2541 | static void link_detach_from_manager(Link *link) { | |
2542 | if (!link || !link->manager) | |
2543 | return; | |
2544 | ||
2545 | link_unref(set_remove(link->manager->links_requesting_uuid, link)); | |
2546 | link_clean(link); | |
2547 | ||
2548 | /* The following must be called at last. */ | |
2549 | assert_se(hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)) == link); | |
2550 | link_unref(link); | |
2551 | } | |
2552 | ||
0d4ad91d AR |
2553 | void link_drop(Link *link) { |
2554 | if (!link || link->state == LINK_STATE_LINGER) | |
2555 | return; | |
2556 | ||
2557 | link_set_state(link, LINK_STATE_LINGER); | |
2558 | ||
2559 | link_free_carrier_maps(link); | |
2560 | ||
5f707e12 YW |
2561 | if (link->network) { |
2562 | link_drop_from_master(link, link->network->bridge); | |
2563 | link_drop_from_master(link, link->network->bond); | |
2564 | } | |
2565 | ||
6a7a4e4d | 2566 | log_link_debug(link, "Link removed"); |
0d4ad91d | 2567 | |
db2f8a2e | 2568 | (void) unlink(link->state_file); |
c4397d94 | 2569 | link_detach_from_manager(link); |
0d4ad91d AR |
2570 | } |
2571 | ||
3f265037 | 2572 | static int link_joined(Link *link) { |
f882c247 TG |
2573 | int r; |
2574 | ||
ef1ba606 | 2575 | assert(link); |
f5be5601 | 2576 | assert(link->network); |
dd3efc09 | 2577 | |
0d4ad91d AR |
2578 | if (!hashmap_isempty(link->bound_to_links)) { |
2579 | r = link_handle_bound_to_list(link); | |
2580 | if (r < 0) | |
2581 | return r; | |
2582 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
2583 | r = link_up(link); |
2584 | if (r < 0) { | |
2585 | link_enter_failed(link); | |
2586 | return r; | |
2587 | } | |
ef1ba606 | 2588 | } |
f882c247 | 2589 | |
9ed794a3 | 2590 | if (link->network->bridge) { |
e1853b00 | 2591 | r = link_set_bridge(link); |
6a7a4e4d LP |
2592 | if (r < 0) |
2593 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
45e11abf YW |
2594 | |
2595 | r = link_append_to_master(link, link->network->bridge); | |
2596 | if (r < 0) | |
2597 | log_link_error_errno(link, r, "Failed to add to bridge master's slave list: %m"); | |
e1853b00 SS |
2598 | } |
2599 | ||
eb64b435 | 2600 | if (link->network->bond) { |
7fcee284 | 2601 | r = link_set_bond(link); |
eb64b435 SS |
2602 | if (r < 0) |
2603 | log_link_error_errno(link, r, "Could not set bond message: %m"); | |
959f65d3 | 2604 | |
45e11abf | 2605 | r = link_append_to_master(link, link->network->bond); |
959f65d3 YW |
2606 | if (r < 0) |
2607 | log_link_error_errno(link, r, "Failed to add to bond master's slave list: %m"); | |
eb64b435 SS |
2608 | } |
2609 | ||
ffff9abe TJ |
2610 | if (link->network->use_br_vlan && |
2611 | (link->network->bridge || streq_ptr("bridge", link->kind))) { | |
13b498f9 TJ |
2612 | r = link_set_bridge_vlan(link); |
2613 | if (r < 0) | |
2614 | log_link_error_errno(link, r, "Could not set bridge vlan: %m"); | |
2615 | } | |
2616 | ||
c1835a42 RM |
2617 | /* Skip setting up addresses until it gets carrier, |
2618 | or it would try to set addresses twice, | |
2619 | which is bad for non-idempotent steps. */ | |
dad2d78e | 2620 | if (!link_has_carrier(link) && !link->network->configure_without_carrier) |
c1835a42 RM |
2621 | return 0; |
2622 | ||
289e6774 | 2623 | return link_request_set_addresses(link); |
02b59d57 TG |
2624 | } |
2625 | ||
302a796f | 2626 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
02b59d57 TG |
2627 | int r; |
2628 | ||
1746cf2a | 2629 | assert(link); |
ef1ba606 | 2630 | assert(link->network); |
34bf3c00 YW |
2631 | assert(link->enslaving > 0); |
2632 | assert(!link->enslaved_raw); | |
02b59d57 | 2633 | |
313cefa1 | 2634 | link->enslaving--; |
52433f6b | 2635 | |
5da8149f | 2636 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
2637 | return 1; |
2638 | ||
1c4baffc | 2639 | r = sd_netlink_message_get_errno(m); |
856f962c | 2640 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 2641 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
2642 | link_enter_failed(link); |
2643 | return 1; | |
ba179154 | 2644 | } else |
6a7a4e4d | 2645 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 2646 | |
34bf3c00 YW |
2647 | if (link->enslaving == 0) { |
2648 | link->enslaved_raw = true; | |
3f265037 | 2649 | link_joined(link); |
34bf3c00 | 2650 | } |
02b59d57 TG |
2651 | |
2652 | return 1; | |
2653 | } | |
2654 | ||
3f265037 | 2655 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 2656 | NetDev *netdev; |
672682a6 | 2657 | Iterator i; |
02b59d57 TG |
2658 | int r; |
2659 | ||
2660 | assert(link); | |
2661 | assert(link->network); | |
bd08ce56 | 2662 | assert(link->state == LINK_STATE_INITIALIZED); |
02b59d57 | 2663 | |
289e6774 | 2664 | link_set_state(link, LINK_STATE_CONFIGURING); |
02b59d57 | 2665 | |
84de38c5 | 2666 | link_dirty(link); |
34bf3c00 YW |
2667 | link->enslaving = 0; |
2668 | link->enslaved_raw = false; | |
02b59d57 | 2669 | |
d9c67ea1 | 2670 | if (link->network->bond) { |
cbff7170 TJ |
2671 | if (link->network->bond->state == NETDEV_STATE_READY && |
2672 | link->network->bond->ifindex == link->master_ifindex) | |
2673 | return link_joined(link); | |
2674 | ||
f2341e0a LP |
2675 | log_struct(LOG_DEBUG, |
2676 | LOG_LINK_INTERFACE(link), | |
2677 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 2678 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname)); |
f2341e0a | 2679 | |
34bf3c00 YW |
2680 | link->enslaving++; |
2681 | ||
f2341e0a | 2682 | r = netdev_join(link->network->bond, link, netdev_join_handler); |
52433f6b | 2683 | if (r < 0) { |
f2341e0a LP |
2684 | log_struct_errno(LOG_WARNING, r, |
2685 | LOG_LINK_INTERFACE(link), | |
2686 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 2687 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname)); |
52433f6b TG |
2688 | link_enter_failed(link); |
2689 | return r; | |
2690 | } | |
0ad6148e MO |
2691 | } |
2692 | ||
d9c67ea1 | 2693 | if (link->network->bridge) { |
f2341e0a LP |
2694 | log_struct(LOG_DEBUG, |
2695 | LOG_LINK_INTERFACE(link), | |
2696 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 2697 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname)); |
f2341e0a | 2698 | |
34bf3c00 YW |
2699 | link->enslaving++; |
2700 | ||
f2341e0a | 2701 | r = netdev_join(link->network->bridge, link, netdev_join_handler); |
0ad6148e | 2702 | if (r < 0) { |
f2341e0a LP |
2703 | log_struct_errno(LOG_WARNING, r, |
2704 | LOG_LINK_INTERFACE(link), | |
2705 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 2706 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname)); |
0ad6148e MO |
2707 | link_enter_failed(link); |
2708 | return r; | |
2709 | } | |
52433f6b TG |
2710 | } |
2711 | ||
6cb955c6 AR |
2712 | if (link->network->vrf) { |
2713 | log_struct(LOG_DEBUG, | |
2714 | LOG_LINK_INTERFACE(link), | |
2715 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 ZJS |
2716 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->vrf->ifname)); |
2717 | ||
34bf3c00 YW |
2718 | link->enslaving++; |
2719 | ||
6cb955c6 AR |
2720 | r = netdev_join(link->network->vrf, link, netdev_join_handler); |
2721 | if (r < 0) { | |
2722 | log_struct_errno(LOG_WARNING, r, | |
2723 | LOG_LINK_INTERFACE(link), | |
2724 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 | 2725 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->vrf->ifname)); |
6cb955c6 AR |
2726 | link_enter_failed(link); |
2727 | return r; | |
2728 | } | |
6cb955c6 AR |
2729 | } |
2730 | ||
6a0a2f86 | 2731 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 2732 | |
2b6db913 YW |
2733 | if (netdev->ifindex > 0) |
2734 | /* Assume already enslaved. */ | |
a63e5daa | 2735 | continue; |
a63e5daa | 2736 | |
7033af49 YW |
2737 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_STACKED) |
2738 | continue; | |
2739 | ||
f2341e0a LP |
2740 | log_struct(LOG_DEBUG, |
2741 | LOG_LINK_INTERFACE(link), | |
2742 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 2743 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); |
f2341e0a | 2744 | |
34bf3c00 YW |
2745 | link->enslaving++; |
2746 | ||
f2341e0a | 2747 | r = netdev_join(netdev, link, netdev_join_handler); |
7951dea2 | 2748 | if (r < 0) { |
f2341e0a LP |
2749 | log_struct_errno(LOG_WARNING, r, |
2750 | LOG_LINK_INTERFACE(link), | |
2751 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 2752 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); |
326cb406 SS |
2753 | link_enter_failed(link); |
2754 | return r; | |
2755 | } | |
326cb406 SS |
2756 | } |
2757 | ||
34bf3c00 YW |
2758 | if (link->enslaving == 0) |
2759 | return link_joined(link); | |
2760 | ||
ef1ba606 TG |
2761 | return 0; |
2762 | } | |
2763 | ||
769d324c | 2764 | static int link_set_ipv4_forward(Link *link) { |
5a8bcb67 LP |
2765 | int r; |
2766 | ||
765afd5c | 2767 | if (!link_ipv4_forward_enabled(link)) |
15dee3f0 LP |
2768 | return 0; |
2769 | ||
765afd5c LP |
2770 | /* We propagate the forwarding flag from one interface to the |
2771 | * global setting one way. This means: as long as at least one | |
2772 | * interface was configured at any time that had IP forwarding | |
2773 | * enabled the setting will stay on for good. We do this | |
2774 | * primarily to keep IPv4 and IPv6 packet forwarding behaviour | |
2775 | * somewhat in sync (see below). */ | |
15dee3f0 | 2776 | |
62e021a9 | 2777 | r = sysctl_write_ip_property(AF_INET, NULL, "ip_forward", "1"); |
eb3da901 | 2778 | if (r < 0) |
765afd5c | 2779 | log_link_warning_errno(link, r, "Cannot turn on IPv4 packet forwarding, ignoring: %m"); |
43c6d5ab | 2780 | |
769d324c LP |
2781 | return 0; |
2782 | } | |
2783 | ||
2784 | static int link_set_ipv6_forward(Link *link) { | |
769d324c LP |
2785 | int r; |
2786 | ||
765afd5c | 2787 | if (!link_ipv6_forward_enabled(link)) |
8add5f79 NO |
2788 | return 0; |
2789 | ||
61233823 | 2790 | /* On Linux, the IPv6 stack does not know a per-interface |
765afd5c LP |
2791 | * packet forwarding setting: either packet forwarding is on |
2792 | * for all, or off for all. We hence don't bother with a | |
2793 | * per-interface setting, but simply propagate the interface | |
2794 | * flag, if it is set, to the global flag, one-way. Note that | |
2795 | * while IPv4 would allow a per-interface flag, we expose the | |
2796 | * same behaviour there and also propagate the setting from | |
2797 | * one to all, to keep things simple (see above). */ | |
15dee3f0 | 2798 | |
62e021a9 | 2799 | r = sysctl_write_ip_property(AF_INET6, "all", "forwarding", "1"); |
eb3da901 | 2800 | if (r < 0) |
765afd5c | 2801 | log_link_warning_errno(link, r, "Cannot configure IPv6 packet forwarding, ignoring: %m"); |
5a8bcb67 LP |
2802 | |
2803 | return 0; | |
2804 | } | |
2805 | ||
49092e22 | 2806 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 | 2807 | IPv6PrivacyExtensions s; |
49092e22 SS |
2808 | int r; |
2809 | ||
1f0d9695 | 2810 | s = link_ipv6_privacy_extensions(link); |
66a6bd68 | 2811 | if (s < 0) |
49092e22 SS |
2812 | return 0; |
2813 | ||
62e021a9 | 2814 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "use_tempaddr", (int) link->network->ipv6_privacy_extensions); |
eb3da901 | 2815 | if (r < 0) |
49092e22 SS |
2816 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
2817 | ||
2818 | return 0; | |
2819 | } | |
2820 | ||
4f2e437a | 2821 | static int link_set_ipv6_accept_ra(Link *link) { |
4f2e437a SS |
2822 | int r; |
2823 | ||
2824 | /* Make this a NOP if IPv6 is not available */ | |
2825 | if (!socket_ipv6_is_supported()) | |
2826 | return 0; | |
2827 | ||
2828 | if (link->flags & IFF_LOOPBACK) | |
2829 | return 0; | |
2830 | ||
d68e2e59 LP |
2831 | if (!link->network) |
2832 | return 0; | |
2833 | ||
62e021a9 | 2834 | r = sysctl_write_ip_property(AF_INET6, link->ifname, "accept_ra", "0"); |
eb3da901 | 2835 | if (r < 0) |
fe307276 | 2836 | log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface: %m"); |
4f2e437a SS |
2837 | |
2838 | return 0; | |
2839 | } | |
2840 | ||
8749cbcd | 2841 | static int link_set_ipv6_dad_transmits(Link *link) { |
8749cbcd SS |
2842 | int r; |
2843 | ||
2844 | /* Make this a NOP if IPv6 is not available */ | |
2845 | if (!socket_ipv6_is_supported()) | |
2846 | return 0; | |
2847 | ||
2848 | if (link->flags & IFF_LOOPBACK) | |
2849 | return 0; | |
2850 | ||
d68e2e59 LP |
2851 | if (!link->network) |
2852 | return 0; | |
2853 | ||
8749cbcd SS |
2854 | if (link->network->ipv6_dad_transmits < 0) |
2855 | return 0; | |
2856 | ||
62e021a9 | 2857 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "dad_transmits", link->network->ipv6_dad_transmits); |
eb3da901 | 2858 | if (r < 0) |
8749cbcd | 2859 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); |
8749cbcd SS |
2860 | |
2861 | return 0; | |
2862 | } | |
2863 | ||
b69c3180 | 2864 | static int link_set_ipv6_hop_limit(Link *link) { |
b69c3180 SS |
2865 | int r; |
2866 | ||
2867 | /* Make this a NOP if IPv6 is not available */ | |
2868 | if (!socket_ipv6_is_supported()) | |
2869 | return 0; | |
2870 | ||
2871 | if (link->flags & IFF_LOOPBACK) | |
2872 | return 0; | |
2873 | ||
d68e2e59 LP |
2874 | if (!link->network) |
2875 | return 0; | |
2876 | ||
b69c3180 SS |
2877 | if (link->network->ipv6_hop_limit < 0) |
2878 | return 0; | |
2879 | ||
62e021a9 | 2880 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "hop_limit", link->network->ipv6_hop_limit); |
eb3da901 | 2881 | if (r < 0) |
b69c3180 | 2882 | log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m"); |
b69c3180 SS |
2883 | |
2884 | return 0; | |
2885 | } | |
2886 | ||
11102cba | 2887 | static int link_set_ipv6_mtu(Link *link) { |
11102cba SS |
2888 | int r; |
2889 | ||
2890 | /* Make this a NOP if IPv6 is not available */ | |
2891 | if (!socket_ipv6_is_supported()) | |
2892 | return 0; | |
2893 | ||
2894 | if (link->flags & IFF_LOOPBACK) | |
2895 | return 0; | |
2896 | ||
2897 | if (link->network->ipv6_mtu == 0) | |
2898 | return 0; | |
2899 | ||
62e021a9 | 2900 | r = sysctl_write_ip_property_uint32(AF_INET6, link->ifname, "mtu", link->network->ipv6_mtu); |
11102cba SS |
2901 | if (r < 0) |
2902 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface: %m"); | |
2903 | ||
2904 | return 0; | |
2905 | } | |
2906 | ||
30226d27 TJ |
2907 | static bool link_is_static_address_configured(Link *link, Address *address) { |
2908 | Address *net_address; | |
2909 | ||
2910 | assert(link); | |
2911 | assert(address); | |
2912 | ||
2913 | if (!link->network) | |
2914 | return false; | |
2915 | ||
2916 | LIST_FOREACH(addresses, net_address, link->network->static_addresses) | |
2917 | if (address_equal(net_address, address)) | |
2918 | return true; | |
2919 | ||
2920 | return false; | |
2921 | } | |
2922 | ||
7ecf0c3e TJ |
2923 | static bool link_is_static_route_configured(Link *link, Route *route) { |
2924 | Route *net_route; | |
2925 | ||
2926 | assert(link); | |
2927 | assert(route); | |
2928 | ||
2929 | if (!link->network) | |
2930 | return false; | |
2931 | ||
2932 | LIST_FOREACH(routes, net_route, link->network->static_routes) | |
2933 | if (route_equal(net_route, route)) | |
2934 | return true; | |
2935 | ||
2936 | return false; | |
2937 | } | |
2938 | ||
5e5b137a TG |
2939 | static int link_drop_foreign_config(Link *link) { |
2940 | Address *address; | |
2941 | Route *route; | |
2942 | Iterator i; | |
2943 | int r; | |
2944 | ||
2945 | SET_FOREACH(address, link->addresses_foreign, i) { | |
fe307276 | 2946 | /* we consider IPv6LL addresses to be managed by the kernel */ |
5e5b137a TG |
2947 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1) |
2948 | continue; | |
2949 | ||
30226d27 TJ |
2950 | if (link_is_static_address_configured(link, address)) { |
2951 | r = address_add(link, address->family, &address->in_addr, address->prefixlen, NULL); | |
2952 | if (r < 0) | |
2953 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
2954 | } else { | |
63ae0569 | 2955 | r = address_remove(address, link, NULL); |
30226d27 TJ |
2956 | if (r < 0) |
2957 | return r; | |
2958 | } | |
5e5b137a TG |
2959 | } |
2960 | ||
2961 | SET_FOREACH(route, link->routes_foreign, i) { | |
fe307276 | 2962 | /* do not touch routes managed by the kernel */ |
5e5b137a TG |
2963 | if (route->protocol == RTPROT_KERNEL) |
2964 | continue; | |
2965 | ||
7ecf0c3e TJ |
2966 | if (link_is_static_route_configured(link, route)) { |
2967 | r = route_add(link, route->family, &route->dst, route->dst_prefixlen, route->tos, route->priority, route->table, NULL); | |
2968 | if (r < 0) | |
2969 | return r; | |
2970 | } else { | |
4645ad47 | 2971 | r = route_remove(route, link, NULL); |
7ecf0c3e TJ |
2972 | if (r < 0) |
2973 | return r; | |
2974 | } | |
5e5b137a TG |
2975 | } |
2976 | ||
2977 | return 0; | |
2978 | } | |
2979 | ||
3104883d | 2980 | static int link_drop_config(Link *link) { |
410a7f15 | 2981 | Address *address, *pool_address; |
3104883d SS |
2982 | Route *route; |
2983 | Iterator i; | |
2984 | int r; | |
2985 | ||
2986 | SET_FOREACH(address, link->addresses, i) { | |
2987 | /* we consider IPv6LL addresses to be managed by the kernel */ | |
2988 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1) | |
2989 | continue; | |
2990 | ||
63ae0569 | 2991 | r = address_remove(address, link, NULL); |
3104883d SS |
2992 | if (r < 0) |
2993 | return r; | |
410a7f15 RM |
2994 | |
2995 | /* If this address came from an address pool, clean up the pool */ | |
2996 | LIST_FOREACH(addresses, pool_address, link->pool_addresses) { | |
2997 | if (address_equal(address, pool_address)) { | |
2998 | LIST_REMOVE(addresses, link->pool_addresses, pool_address); | |
2999 | address_free(pool_address); | |
3000 | break; | |
3001 | } | |
3002 | } | |
3104883d SS |
3003 | } |
3004 | ||
3005 | SET_FOREACH(route, link->routes, i) { | |
3006 | /* do not touch routes managed by the kernel */ | |
3007 | if (route->protocol == RTPROT_KERNEL) | |
3008 | continue; | |
3009 | ||
4645ad47 | 3010 | r = route_remove(route, link, NULL); |
3104883d SS |
3011 | if (r < 0) |
3012 | return r; | |
3013 | } | |
3014 | ||
c69305ff LP |
3015 | ndisc_flush(link); |
3016 | ||
3104883d SS |
3017 | return 0; |
3018 | } | |
3019 | ||
273eec24 LP |
3020 | static int link_update_lldp(Link *link) { |
3021 | int r; | |
3022 | ||
3023 | assert(link); | |
3024 | ||
3025 | if (!link->lldp) | |
3026 | return 0; | |
3027 | ||
3028 | if (link->flags & IFF_UP) { | |
3029 | r = sd_lldp_start(link->lldp); | |
be7468f0 SS |
3030 | if (r < 0) |
3031 | return log_link_warning_errno(link, r, "Failed to start LLDP: %m"); | |
273eec24 LP |
3032 | if (r > 0) |
3033 | log_link_debug(link, "Started LLDP."); | |
3034 | } else { | |
3035 | r = sd_lldp_stop(link->lldp); | |
be7468f0 SS |
3036 | if (r < 0) |
3037 | return log_link_warning_errno(link, r, "Failed to stop LLDP: %m"); | |
273eec24 LP |
3038 | if (r > 0) |
3039 | log_link_debug(link, "Stopped LLDP."); | |
3040 | } | |
3041 | ||
3042 | return r; | |
3043 | } | |
3044 | ||
93ea7750 MKB |
3045 | static int link_configure_can(Link *link) { |
3046 | int r; | |
3047 | ||
06828bb6 HP |
3048 | if (streq_ptr(link->kind, "can")) { |
3049 | /* The CAN interface must be down to configure bitrate, etc... */ | |
3050 | if ((link->flags & IFF_UP)) { | |
3051 | r = link_down(link); | |
3052 | if (r < 0) { | |
3053 | link_enter_failed(link); | |
3054 | return r; | |
3055 | } | |
3056 | ||
3057 | return 0; | |
3058 | } | |
3059 | ||
3060 | return link_set_can(link); | |
3061 | } | |
3062 | ||
93ea7750 MKB |
3063 | if (!(link->flags & IFF_UP)) { |
3064 | r = link_up_can(link); | |
3065 | if (r < 0) { | |
3066 | link_enter_failed(link); | |
3067 | return r; | |
3068 | } | |
3069 | } | |
3070 | ||
3071 | return 0; | |
3072 | } | |
3073 | ||
a748b692 | 3074 | static int link_configure(Link *link) { |
02b59d57 TG |
3075 | int r; |
3076 | ||
ef1ba606 | 3077 | assert(link); |
b22d8a00 | 3078 | assert(link->network); |
bd08ce56 | 3079 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 3080 | |
06828bb6 | 3081 | if (STRPTR_IN_SET(link->kind, "can", "vcan")) |
93ea7750 | 3082 | return link_configure_can(link); |
92c918b0 | 3083 | |
02e28621 ДГ |
3084 | /* Drop foreign config, but ignore loopback or critical devices. |
3085 | * We do not want to remove loopback address or addresses used for root NFS. */ | |
3086 | if (!(link->flags & IFF_LOOPBACK) && !(link->network->dhcp_critical)) { | |
e5d44b34 CH |
3087 | r = link_drop_foreign_config(link); |
3088 | if (r < 0) | |
3089 | return r; | |
3090 | } | |
5e5b137a | 3091 | |
23d8b221 SS |
3092 | r = link_set_proxy_arp(link); |
3093 | if (r < 0) | |
3094 | return r; | |
3095 | ||
a0e5c15d FK |
3096 | r = ipv6_proxy_ndp_addresses_configure(link); |
3097 | if (r < 0) | |
3098 | return r; | |
3099 | ||
769d324c LP |
3100 | r = link_set_ipv4_forward(link); |
3101 | if (r < 0) | |
3102 | return r; | |
3103 | ||
3104 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
3105 | if (r < 0) |
3106 | return r; | |
3107 | ||
49092e22 SS |
3108 | r = link_set_ipv6_privacy_extensions(link); |
3109 | if (r < 0) | |
3110 | return r; | |
3111 | ||
4f2e437a SS |
3112 | r = link_set_ipv6_accept_ra(link); |
3113 | if (r < 0) | |
3114 | return r; | |
3115 | ||
8749cbcd SS |
3116 | r = link_set_ipv6_dad_transmits(link); |
3117 | if (r < 0) | |
3118 | return r; | |
b69c3180 SS |
3119 | |
3120 | r = link_set_ipv6_hop_limit(link); | |
3121 | if (r < 0) | |
3122 | return r; | |
8749cbcd | 3123 | |
99d2baa2 SS |
3124 | r = link_set_flags(link); |
3125 | if (r < 0) | |
3126 | return r; | |
3127 | ||
11102cba SS |
3128 | r = link_set_ipv6_mtu(link); |
3129 | if (r < 0) | |
3130 | return r; | |
3131 | ||
8bc17bb3 | 3132 | if (link_ipv4ll_enabled(link) || link_ipv4ll_fallback_enabled(link)) { |
b22d8a00 | 3133 | r = ipv4ll_configure(link); |
eb34d4af TG |
3134 | if (r < 0) |
3135 | return r; | |
3136 | } | |
3137 | ||
78c958f8 | 3138 | if (link_dhcp4_enabled(link)) { |
64b21ece MV |
3139 | r = dhcp4_set_promote_secondaries(link); |
3140 | if (r < 0) | |
3141 | return r; | |
3142 | ||
3c9b8860 | 3143 | r = dhcp4_configure(link); |
eb34d4af TG |
3144 | if (r < 0) |
3145 | return r; | |
eb34d4af TG |
3146 | } |
3147 | ||
78c958f8 | 3148 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
3149 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
3150 | if (r < 0) | |
3151 | return r; | |
3152 | ||
3153 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
3154 | if (r < 0) | |
3155 | return r; | |
dd43110f TG |
3156 | } |
3157 | ||
62379e88 TG |
3158 | if (link_dhcp6_enabled(link) || |
3159 | link_ipv6_accept_ra_enabled(link)) { | |
f5a8c43f TG |
3160 | r = dhcp6_configure(link); |
3161 | if (r < 0) | |
3162 | return r; | |
3163 | } | |
3164 | ||
3165 | if (link_ipv6_accept_ra_enabled(link)) { | |
de1e9928 | 3166 | r = ndisc_configure(link); |
4138fb2c PF |
3167 | if (r < 0) |
3168 | return r; | |
3169 | } | |
3170 | ||
7465dd22 PF |
3171 | if (link_radv_enabled(link)) { |
3172 | r = radv_configure(link); | |
3173 | if (r < 0) | |
3174 | return r; | |
3175 | } | |
3176 | ||
8e1ad1ea | 3177 | if (link_lldp_rx_enabled(link)) { |
fc6a313b LP |
3178 | r = sd_lldp_new(&link->lldp); |
3179 | if (r < 0) | |
3180 | return r; | |
3181 | ||
3182 | r = sd_lldp_set_ifindex(link->lldp, link->ifindex); | |
34437b4f LP |
3183 | if (r < 0) |
3184 | return r; | |
3185 | ||
3186 | r = sd_lldp_match_capabilities(link->lldp, | |
3187 | link->network->lldp_mode == LLDP_MODE_ROUTERS_ONLY ? | |
6afa6767 BG |
3188 | SD_LLDP_SYSTEM_CAPABILITIES_ALL_ROUTERS : |
3189 | SD_LLDP_SYSTEM_CAPABILITIES_ALL); | |
ce43e484 SS |
3190 | if (r < 0) |
3191 | return r; | |
3192 | ||
b553a6b1 LP |
3193 | r = sd_lldp_set_filter_address(link->lldp, &link->mac); |
3194 | if (r < 0) | |
3195 | return r; | |
3196 | ||
ce43e484 SS |
3197 | r = sd_lldp_attach_event(link->lldp, NULL, 0); |
3198 | if (r < 0) | |
3199 | return r; | |
49699bac | 3200 | |
032b27f5 | 3201 | r = sd_lldp_set_callback(link->lldp, lldp_handler, link); |
49699bac SS |
3202 | if (r < 0) |
3203 | return r; | |
273eec24 LP |
3204 | |
3205 | r = link_update_lldp(link); | |
3206 | if (r < 0) | |
3207 | return r; | |
ce43e484 SS |
3208 | } |
3209 | ||
40288ece YW |
3210 | r = link_set_mtu(link, link->network->mtu, link->network->mtu_is_set); |
3211 | if (r < 0) | |
3212 | return r; | |
44b598a1 | 3213 | |
0e2fdb83 SS |
3214 | if (socket_ipv6_is_supported()) { |
3215 | r = link_configure_addrgen_mode(link); | |
3216 | if (r < 0) | |
3217 | return r; | |
3218 | } | |
3219 | ||
55dc8c4a YW |
3220 | return link_configure_after_setting_mtu(link); |
3221 | } | |
3222 | ||
3223 | static int link_configure_after_setting_mtu(Link *link) { | |
3224 | int r; | |
3225 | ||
3226 | assert(link); | |
3227 | assert(link->network); | |
bd08ce56 | 3228 | assert(link->state == LINK_STATE_INITIALIZED); |
55dc8c4a YW |
3229 | |
3230 | if (link->setting_mtu) | |
3231 | return 0; | |
3232 | ||
dad2d78e | 3233 | if (link_has_carrier(link) || link->network->configure_without_carrier) { |
1e9be60b TG |
3234 | r = link_acquire_conf(link); |
3235 | if (r < 0) | |
3236 | return r; | |
cc544d5f | 3237 | } |
1e9be60b | 3238 | |
3f265037 | 3239 | return link_enter_join_netdev(link); |
505f8da7 TG |
3240 | } |
3241 | ||
27dfc982 YW |
3242 | static int duid_set_uuid(DUID *duid, sd_id128_t uuid) { |
3243 | assert(duid); | |
3244 | ||
3245 | if (duid->raw_data_len > 0) | |
3246 | return 0; | |
3247 | ||
3248 | if (duid->type != DUID_TYPE_UUID) | |
3249 | return -EINVAL; | |
3250 | ||
3251 | memcpy(&duid->raw_data, &uuid, sizeof(sd_id128_t)); | |
3252 | duid->raw_data_len = sizeof(sd_id128_t); | |
3253 | ||
3254 | return 1; | |
3255 | } | |
3256 | ||
3257 | int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { | |
3258 | Manager *manager = userdata; | |
3259 | const sd_bus_error *e; | |
3260 | const void *a; | |
3261 | size_t sz; | |
3262 | DUID *duid; | |
3263 | Link *link; | |
3264 | int r; | |
3265 | ||
3266 | assert(m); | |
3267 | assert(manager); | |
3268 | ||
3269 | e = sd_bus_message_get_error(m); | |
3270 | if (e) { | |
3271 | log_error_errno(sd_bus_error_get_errno(e), | |
ab4dd984 | 3272 | "Could not get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %s", |
27dfc982 YW |
3273 | e->message); |
3274 | goto configure; | |
3275 | } | |
3276 | ||
3277 | r = sd_bus_message_read_array(m, 'y', &a, &sz); | |
3278 | if (r < 0) | |
3279 | goto configure; | |
3280 | ||
3281 | if (sz != sizeof(sd_id128_t)) { | |
ab4dd984 | 3282 | log_error("Invalid product UUID. Falling back to use machine-app-specific ID as DUID-UUID."); |
27dfc982 YW |
3283 | goto configure; |
3284 | } | |
3285 | ||
3286 | memcpy(&manager->product_uuid, a, sz); | |
3287 | while ((duid = set_steal_first(manager->duids_requesting_uuid))) | |
3288 | (void) duid_set_uuid(duid, manager->product_uuid); | |
3289 | ||
3290 | manager->duids_requesting_uuid = set_free(manager->duids_requesting_uuid); | |
3291 | ||
3292 | configure: | |
3293 | while ((link = set_steal_first(manager->links_requesting_uuid))) { | |
3294 | r = link_configure(link); | |
3295 | if (r < 0) | |
3296 | log_link_error_errno(link, r, "Failed to configure link: %m"); | |
3297 | } | |
3298 | ||
3299 | manager->links_requesting_uuid = set_free(manager->links_requesting_uuid); | |
3300 | ||
3301 | /* To avoid calling GetProductUUID() bus method so frequently, set the flag below | |
3302 | * even if the method fails. */ | |
3303 | manager->has_product_uuid = true; | |
3304 | ||
3305 | return 1; | |
3306 | } | |
3307 | ||
3308 | static bool link_requires_uuid(Link *link) { | |
3309 | const DUID *duid; | |
3310 | ||
3311 | assert(link); | |
3312 | assert(link->manager); | |
3313 | assert(link->network); | |
3314 | ||
3315 | duid = link_get_duid(link); | |
3316 | if (duid->type != DUID_TYPE_UUID || duid->raw_data_len != 0) | |
3317 | return false; | |
3318 | ||
3319 | if (link_dhcp4_enabled(link) && IN_SET(link->network->dhcp_client_identifier, DHCP_CLIENT_ID_DUID, DHCP_CLIENT_ID_DUID_ONLY)) | |
3320 | return true; | |
3321 | ||
3322 | if (link_dhcp6_enabled(link) || link_ipv6_accept_ra_enabled(link)) | |
3323 | return true; | |
3324 | ||
3325 | return false; | |
3326 | } | |
3327 | ||
3328 | static int link_configure_duid(Link *link) { | |
3329 | Manager *m; | |
3330 | DUID *duid; | |
3331 | int r; | |
3332 | ||
3333 | assert(link); | |
3334 | assert(link->manager); | |
3335 | assert(link->network); | |
3336 | ||
3337 | m = link->manager; | |
3338 | duid = link_get_duid(link); | |
3339 | ||
3340 | if (!link_requires_uuid(link)) | |
3341 | return 1; | |
3342 | ||
3343 | if (m->has_product_uuid) { | |
3344 | (void) duid_set_uuid(duid, m->product_uuid); | |
3345 | return 1; | |
3346 | } | |
3347 | ||
3348 | if (!m->links_requesting_uuid) { | |
3349 | r = manager_request_product_uuid(m, link); | |
3350 | if (r < 0) { | |
3351 | if (r == -ENOMEM) | |
3352 | return r; | |
3353 | ||
ab4dd984 ZJS |
3354 | log_link_warning_errno(link, r, |
3355 | "Failed to get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %m"); | |
27dfc982 YW |
3356 | return 1; |
3357 | } | |
3358 | } else { | |
3359 | r = set_put(m->links_requesting_uuid, link); | |
3360 | if (r < 0) | |
3361 | return log_oom(); | |
3362 | ||
3363 | r = set_put(m->duids_requesting_uuid, duid); | |
3364 | if (r < 0) | |
3365 | return log_oom(); | |
3366 | } | |
3367 | ||
3368 | return 0; | |
3369 | } | |
3370 | ||
e6bf7774 | 3371 | static int link_initialized_and_synced(Link *link) { |
505f8da7 | 3372 | Network *network; |
505f8da7 TG |
3373 | int r; |
3374 | ||
3375 | assert(link); | |
3376 | assert(link->ifname); | |
3377 | assert(link->manager); | |
3378 | ||
bd08ce56 YW |
3379 | /* We may get called either from the asynchronous netlink callback, |
3380 | * or directly for link_add() if running in a container. See link_add(). */ | |
3381 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) | |
4232cf04 | 3382 | return 0; |
505f8da7 | 3383 | |
6a7a4e4d | 3384 | log_link_debug(link, "Link state is up-to-date"); |
bd08ce56 | 3385 | link_set_state(link, LINK_STATE_INITIALIZED); |
505f8da7 | 3386 | |
0d4ad91d AR |
3387 | r = link_new_bound_by_list(link); |
3388 | if (r < 0) | |
3389 | return r; | |
3390 | ||
3391 | r = link_handle_bound_by_list(link); | |
3392 | if (r < 0) | |
3393 | return r; | |
3394 | ||
c4a03a56 | 3395 | if (!link->network) { |
51517f9e | 3396 | r = network_get(link->manager, link->sd_device, link->ifname, |
c4a03a56 TG |
3397 | &link->mac, &network); |
3398 | if (r == -ENOENT) { | |
3399 | link_enter_unmanaged(link); | |
4232cf04 | 3400 | return 0; |
a09dc546 DM |
3401 | } else if (r == 0 && network->unmanaged) { |
3402 | link_enter_unmanaged(link); | |
3403 | return 0; | |
c4a03a56 TG |
3404 | } else if (r < 0) |
3405 | return r; | |
505f8da7 | 3406 | |
c4a03a56 TG |
3407 | if (link->flags & IFF_LOOPBACK) { |
3408 | if (network->link_local != ADDRESS_FAMILY_NO) | |
3409 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 3410 | |
c4a03a56 TG |
3411 | if (network->dhcp != ADDRESS_FAMILY_NO) |
3412 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 3413 | |
c4a03a56 TG |
3414 | if (network->dhcp_server) |
3415 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
3416 | } | |
bd2efe92 | 3417 | |
7d342c03 | 3418 | r = network_apply(network, link); |
c4a03a56 TG |
3419 | if (r < 0) |
3420 | return r; | |
3421 | } | |
505f8da7 | 3422 | |
0d4ad91d AR |
3423 | r = link_new_bound_to_list(link); |
3424 | if (r < 0) | |
3425 | return r; | |
3426 | ||
27dfc982 YW |
3427 | /* link_configure_duid() returns 0 if it requests product UUID. In that case, |
3428 | * link_configure() is called later asynchronously. */ | |
3429 | r = link_configure_duid(link); | |
3430 | if (r <= 0) | |
3431 | return r; | |
3432 | ||
a748b692 TG |
3433 | r = link_configure(link); |
3434 | if (r < 0) | |
3435 | return r; | |
3436 | ||
4232cf04 | 3437 | return 0; |
505f8da7 TG |
3438 | } |
3439 | ||
302a796f YW |
3440 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
3441 | (void) link_initialized_and_synced(link); | |
e6bf7774 YW |
3442 | return 1; |
3443 | } | |
3444 | ||
51517f9e | 3445 | int link_initialized(Link *link, sd_device *device) { |
4afd3348 | 3446 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f561e8e TG |
3447 | int r; |
3448 | ||
3449 | assert(link); | |
3450 | assert(link->manager); | |
3451 | assert(link->manager->rtnl); | |
3452 | assert(device); | |
3453 | ||
8434fd5c | 3454 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
3455 | return 0; |
3456 | ||
51517f9e | 3457 | if (link->sd_device) |
679b3605 TG |
3458 | return 0; |
3459 | ||
79008bdd | 3460 | log_link_debug(link, "udev initialized link"); |
bd08ce56 | 3461 | link_set_state(link, LINK_STATE_INITIALIZED); |
4f561e8e | 3462 | |
51517f9e | 3463 | link->sd_device = sd_device_ref(device); |
4f561e8e | 3464 | |
3c9b8860 TG |
3465 | /* udev has initialized the link, but we don't know if we have yet |
3466 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
3467 | * when it returns we know that the pending NEWLINKs have already been | |
3468 | * processed and that we are up-to-date */ | |
4f561e8e | 3469 | |
3c9b8860 TG |
3470 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
3471 | link->ifindex); | |
4f561e8e TG |
3472 | if (r < 0) |
3473 | return r; | |
3474 | ||
302a796f YW |
3475 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_initialized_handler, |
3476 | link_netlink_destroy_callback, link); | |
4f561e8e TG |
3477 | if (r < 0) |
3478 | return r; | |
3479 | ||
5da8149f TG |
3480 | link_ref(link); |
3481 | ||
4f561e8e TG |
3482 | return 0; |
3483 | } | |
3484 | ||
c4a03a56 | 3485 | static int link_load(Link *link) { |
0bc70f1d TG |
3486 | _cleanup_free_ char *network_file = NULL, |
3487 | *addresses = NULL, | |
f703cc2c | 3488 | *routes = NULL, |
0bc70f1d TG |
3489 | *dhcp4_address = NULL, |
3490 | *ipv4ll_address = NULL; | |
3491 | union in_addr_union address; | |
f703cc2c | 3492 | union in_addr_union route_dst; |
c598ac76 | 3493 | const char *p; |
c4a03a56 TG |
3494 | int r; |
3495 | ||
3496 | assert(link); | |
3497 | ||
aa8fbc74 | 3498 | r = parse_env_file(NULL, link->state_file, |
c4a03a56 TG |
3499 | "NETWORK_FILE", &network_file, |
3500 | "ADDRESSES", &addresses, | |
f703cc2c | 3501 | "ROUTES", &routes, |
0bc70f1d | 3502 | "DHCP4_ADDRESS", &dhcp4_address, |
13df9c39 | 3503 | "IPV4LL_ADDRESS", &ipv4ll_address); |
c4a03a56 TG |
3504 | if (r < 0 && r != -ENOENT) |
3505 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
3506 | ||
3507 | if (network_file) { | |
3508 | Network *network; | |
3509 | char *suffix; | |
3510 | ||
3511 | /* drop suffix */ | |
3512 | suffix = strrchr(network_file, '.'); | |
3513 | if (!suffix) { | |
3514 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
3515 | goto network_file_fail; | |
3516 | } | |
3517 | *suffix = '\0'; | |
3518 | ||
3519 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
3520 | if (r < 0) { | |
3521 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
3522 | goto network_file_fail; | |
3523 | } | |
3524 | ||
7d342c03 | 3525 | r = network_apply(network, link); |
c4a03a56 TG |
3526 | if (r < 0) |
3527 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
3528 | } | |
3529 | ||
3530 | network_file_fail: | |
3531 | ||
3532 | if (addresses) { | |
c598ac76 | 3533 | p = addresses; |
c4a03a56 | 3534 | |
c598ac76 TG |
3535 | for (;;) { |
3536 | _cleanup_free_ char *address_str = NULL; | |
c4a03a56 TG |
3537 | char *prefixlen_str; |
3538 | int family; | |
3539 | unsigned char prefixlen; | |
c4a03a56 | 3540 | |
c598ac76 TG |
3541 | r = extract_first_word(&p, &address_str, NULL, 0); |
3542 | if (r < 0) { | |
3543 | log_link_debug_errno(link, r, "Failed to extract next address string: %m"); | |
3544 | continue; | |
928bc597 TA |
3545 | } |
3546 | if (r == 0) | |
c598ac76 TG |
3547 | break; |
3548 | ||
3549 | prefixlen_str = strchr(address_str, '/'); | |
c4a03a56 | 3550 | if (!prefixlen_str) { |
c598ac76 | 3551 | log_link_debug(link, "Failed to parse address and prefix length %s", address_str); |
c4a03a56 TG |
3552 | continue; |
3553 | } | |
3554 | ||
313cefa1 | 3555 | *prefixlen_str++ = '\0'; |
c4a03a56 TG |
3556 | |
3557 | r = sscanf(prefixlen_str, "%hhu", &prefixlen); | |
3558 | if (r != 1) { | |
3559 | log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str); | |
3560 | continue; | |
3561 | } | |
3562 | ||
c598ac76 | 3563 | r = in_addr_from_string_auto(address_str, &family, &address); |
c4a03a56 | 3564 | if (r < 0) { |
c598ac76 | 3565 | log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str); |
c4a03a56 TG |
3566 | continue; |
3567 | } | |
3568 | ||
3569 | r = address_add(link, family, &address, prefixlen, NULL); | |
3570 | if (r < 0) | |
3571 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
3572 | } | |
3573 | } | |
3574 | ||
f703cc2c | 3575 | if (routes) { |
74544b4e TA |
3576 | p = routes; |
3577 | ||
c598ac76 | 3578 | for (;;) { |
f833694d | 3579 | Route *route; |
c598ac76 | 3580 | _cleanup_free_ char *route_str = NULL; |
4afd3348 | 3581 | _cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL; |
f833694d | 3582 | usec_t lifetime; |
f703cc2c TG |
3583 | char *prefixlen_str; |
3584 | int family; | |
3585 | unsigned char prefixlen, tos, table; | |
3586 | uint32_t priority; | |
3587 | ||
c598ac76 TG |
3588 | r = extract_first_word(&p, &route_str, NULL, 0); |
3589 | if (r < 0) { | |
3590 | log_link_debug_errno(link, r, "Failed to extract next route string: %m"); | |
3591 | continue; | |
928bc597 TA |
3592 | } |
3593 | if (r == 0) | |
c598ac76 TG |
3594 | break; |
3595 | ||
3596 | prefixlen_str = strchr(route_str, '/'); | |
f703cc2c | 3597 | if (!prefixlen_str) { |
c598ac76 | 3598 | log_link_debug(link, "Failed to parse route %s", route_str); |
f703cc2c TG |
3599 | continue; |
3600 | } | |
3601 | ||
313cefa1 | 3602 | *prefixlen_str++ = '\0'; |
f703cc2c | 3603 | |
f833694d TG |
3604 | r = sscanf(prefixlen_str, "%hhu/%hhu/%"SCNu32"/%hhu/"USEC_FMT, &prefixlen, &tos, &priority, &table, &lifetime); |
3605 | if (r != 5) { | |
3606 | log_link_debug(link, | |
3607 | "Failed to parse destination prefix length, tos, priority, table or expiration %s", | |
3608 | prefixlen_str); | |
f703cc2c TG |
3609 | continue; |
3610 | } | |
3611 | ||
c598ac76 | 3612 | r = in_addr_from_string_auto(route_str, &family, &route_dst); |
f703cc2c | 3613 | if (r < 0) { |
c598ac76 | 3614 | log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str); |
f703cc2c TG |
3615 | continue; |
3616 | } | |
3617 | ||
f833694d | 3618 | r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route); |
f703cc2c TG |
3619 | if (r < 0) |
3620 | return log_link_error_errno(link, r, "Failed to add route: %m"); | |
f833694d | 3621 | |
f02ba163 | 3622 | if (lifetime != USEC_INFINITY && !kernel_route_expiration_supported()) { |
f833694d TG |
3623 | r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), lifetime, |
3624 | 0, route_expire_handler, route); | |
3625 | if (r < 0) | |
3626 | log_link_warning_errno(link, r, "Could not arm route expiration handler: %m"); | |
3627 | } | |
3628 | ||
3629 | route->lifetime = lifetime; | |
3630 | sd_event_source_unref(route->expire); | |
1cc6c93a | 3631 | route->expire = TAKE_PTR(expire); |
f703cc2c TG |
3632 | } |
3633 | } | |
3634 | ||
0bc70f1d TG |
3635 | if (dhcp4_address) { |
3636 | r = in_addr_from_string(AF_INET, dhcp4_address, &address); | |
3637 | if (r < 0) { | |
b68d26b8 | 3638 | log_link_debug_errno(link, r, "Failed to parse DHCPv4 address %s: %m", dhcp4_address); |
0bc70f1d TG |
3639 | goto dhcp4_address_fail; |
3640 | } | |
3641 | ||
b1c626f6 | 3642 | r = sd_dhcp_client_new(&link->dhcp_client, link->network ? link->network->dhcp_anonymize : 0); |
0bc70f1d | 3643 | if (r < 0) |
b68d26b8 | 3644 | return log_link_error_errno(link, r, "Failed to create DHCPv4 client: %m"); |
0bc70f1d TG |
3645 | |
3646 | r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in); | |
3647 | if (r < 0) | |
b68d26b8 | 3648 | return log_link_error_errno(link, r, "Failed to set initial DHCPv4 address %s: %m", dhcp4_address); |
0bc70f1d TG |
3649 | } |
3650 | ||
3651 | dhcp4_address_fail: | |
3652 | ||
3653 | if (ipv4ll_address) { | |
3654 | r = in_addr_from_string(AF_INET, ipv4ll_address, &address); | |
3655 | if (r < 0) { | |
b68d26b8 | 3656 | log_link_debug_errno(link, r, "Failed to parse IPv4LL address %s: %m", ipv4ll_address); |
0bc70f1d TG |
3657 | goto ipv4ll_address_fail; |
3658 | } | |
3659 | ||
3660 | r = sd_ipv4ll_new(&link->ipv4ll); | |
3661 | if (r < 0) | |
b68d26b8 | 3662 | return log_link_error_errno(link, r, "Failed to create IPv4LL client: %m"); |
0bc70f1d TG |
3663 | |
3664 | r = sd_ipv4ll_set_address(link->ipv4ll, &address.in); | |
3665 | if (r < 0) | |
b68d26b8 | 3666 | return log_link_error_errno(link, r, "Failed to set initial IPv4LL address %s: %m", ipv4ll_address); |
0bc70f1d TG |
3667 | } |
3668 | ||
3669 | ipv4ll_address_fail: | |
3670 | ||
c4a03a56 TG |
3671 | return 0; |
3672 | } | |
3673 | ||
1c4baffc | 3674 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
51517f9e | 3675 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
505f8da7 | 3676 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; |
51517f9e | 3677 | Link *link; |
5a937ea2 | 3678 | int r; |
505f8da7 TG |
3679 | |
3680 | assert(m); | |
fbbeb65a | 3681 | assert(m->rtnl); |
505f8da7 TG |
3682 | assert(message); |
3683 | assert(ret); | |
3684 | ||
3685 | r = link_new(m, message, ret); | |
3686 | if (r < 0) | |
3687 | return r; | |
3688 | ||
3689 | link = *ret; | |
3690 | ||
6a7a4e4d | 3691 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 3692 | |
c4a03a56 TG |
3693 | r = link_load(link); |
3694 | if (r < 0) | |
3695 | return r; | |
3696 | ||
75f86906 | 3697 | if (detect_container() <= 0) { |
505f8da7 | 3698 | /* not in a container, udev will be around */ |
ae06ab10 | 3699 | sprintf(ifindex_str, "n%d", link->ifindex); |
51517f9e YW |
3700 | r = sd_device_new_from_device_id(&device, ifindex_str); |
3701 | if (r < 0) { | |
3702 | log_link_warning_errno(link, r, "Could not find device: %m"); | |
5c416fc4 TG |
3703 | goto failed; |
3704 | } | |
505f8da7 | 3705 | |
5a937ea2 | 3706 | r = sd_device_get_is_initialized(device); |
51517f9e YW |
3707 | if (r < 0) { |
3708 | log_link_warning_errno(link, r, "Could not determine whether the device is initialized or not: %m"); | |
3709 | goto failed; | |
3710 | } | |
5a937ea2 | 3711 | if (r == 0) { |
505f8da7 | 3712 | /* not yet ready */ |
79008bdd | 3713 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 3714 | return 0; |
3c4cb064 | 3715 | } |
505f8da7 | 3716 | |
299ad32d YW |
3717 | r = device_is_renaming(device); |
3718 | if (r < 0) { | |
3719 | log_link_warning_errno(link, r, "Failed to determine the device is renamed or not: %m"); | |
3720 | goto failed; | |
3721 | } | |
3722 | if (r > 0) { | |
3723 | log_link_debug(link, "Interface is under renaming, pending initialization."); | |
3724 | return 0; | |
3725 | } | |
3726 | ||
4f561e8e TG |
3727 | r = link_initialized(link, device); |
3728 | if (r < 0) | |
5c416fc4 | 3729 | goto failed; |
4f561e8e | 3730 | } else { |
e6bf7774 | 3731 | r = link_initialized_and_synced(link); |
4f561e8e | 3732 | if (r < 0) |
5c416fc4 | 3733 | goto failed; |
4f561e8e | 3734 | } |
505f8da7 | 3735 | |
a748b692 | 3736 | return 0; |
5c416fc4 TG |
3737 | failed: |
3738 | link_enter_failed(link); | |
3739 | return r; | |
a748b692 TG |
3740 | } |
3741 | ||
c601ebf7 | 3742 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
e7ab854c TG |
3743 | int r; |
3744 | ||
3745 | assert(link); | |
3746 | ||
3747 | log_link_info(link, "Gained IPv6LL"); | |
3748 | ||
c601ebf7 | 3749 | link->ipv6ll_address = *address; |
e7ab854c TG |
3750 | link_check_ready(link); |
3751 | ||
b9ea3d2e | 3752 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
e7ab854c TG |
3753 | r = link_acquire_ipv6_conf(link); |
3754 | if (r < 0) { | |
3755 | link_enter_failed(link); | |
3756 | return r; | |
3757 | } | |
3758 | } | |
3759 | ||
3760 | return 0; | |
3761 | } | |
3762 | ||
9c0a72f9 TG |
3763 | static int link_carrier_gained(Link *link) { |
3764 | int r; | |
3765 | ||
3766 | assert(link); | |
3767 | ||
b9ea3d2e | 3768 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
9c0a72f9 TG |
3769 | r = link_acquire_conf(link); |
3770 | if (r < 0) { | |
3771 | link_enter_failed(link); | |
3772 | return r; | |
3773 | } | |
6fc25497 | 3774 | |
289e6774 | 3775 | r = link_request_set_addresses(link); |
6fc25497 SS |
3776 | if (r < 0) |
3777 | return r; | |
9c0a72f9 TG |
3778 | } |
3779 | ||
0d4ad91d AR |
3780 | r = link_handle_bound_by_list(link); |
3781 | if (r < 0) | |
3782 | return r; | |
3783 | ||
9c0a72f9 TG |
3784 | return 0; |
3785 | } | |
3786 | ||
3787 | static int link_carrier_lost(Link *link) { | |
3788 | int r; | |
3789 | ||
3790 | assert(link); | |
3791 | ||
25e992ba | 3792 | if (link->network && link->network->ignore_carrier_loss) |
93b4dab5 SS |
3793 | return 0; |
3794 | ||
fbdb6605 | 3795 | /* Some devices reset itself while setting the MTU. This causes the DHCP client fall into a loop. |
55dc8c4a YW |
3796 | * setting_mtu keep track whether the device got reset because of setting MTU and does not drop the |
3797 | * configuration and stop the clients as well. */ | |
97e7fb39 SS |
3798 | if (link->setting_mtu) |
3799 | return 0; | |
3800 | ||
9c0a72f9 TG |
3801 | r = link_stop_clients(link); |
3802 | if (r < 0) { | |
3803 | link_enter_failed(link); | |
3804 | return r; | |
3805 | } | |
3806 | ||
28464ae0 SS |
3807 | if (link_dhcp4_server_enabled(link)) |
3808 | (void) sd_dhcp_server_stop(link->dhcp_server); | |
45a9eac9 | 3809 | |
3104883d SS |
3810 | r = link_drop_config(link); |
3811 | if (r < 0) | |
3812 | return r; | |
3813 | ||
f258e948 MP |
3814 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING)) { |
3815 | log_link_debug(link, "State is %s, dropping config", link_state_to_string(link->state)); | |
c436d553 MM |
3816 | r = link_drop_foreign_config(link); |
3817 | if (r < 0) | |
3818 | return r; | |
3819 | } | |
3104883d | 3820 | |
0d4ad91d AR |
3821 | r = link_handle_bound_by_list(link); |
3822 | if (r < 0) | |
3823 | return r; | |
3824 | ||
9c0a72f9 TG |
3825 | return 0; |
3826 | } | |
3827 | ||
3828 | int link_carrier_reset(Link *link) { | |
3829 | int r; | |
3830 | ||
3831 | assert(link); | |
3832 | ||
3833 | if (link_has_carrier(link)) { | |
3834 | r = link_carrier_lost(link); | |
3835 | if (r < 0) | |
3836 | return r; | |
3837 | ||
3838 | r = link_carrier_gained(link); | |
3839 | if (r < 0) | |
3840 | return r; | |
3841 | ||
6a7a4e4d | 3842 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
3843 | } |
3844 | ||
3845 | return 0; | |
3846 | } | |
3847 | ||
1c4baffc | 3848 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 3849 | struct ether_addr mac; |
ca4e095a | 3850 | const char *ifname; |
afe7fd56 | 3851 | uint32_t mtu; |
a61bb41c | 3852 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
3853 | int r; |
3854 | ||
dd3efc09 | 3855 | assert(link); |
b8941f74 | 3856 | assert(link->ifname); |
22936833 TG |
3857 | assert(m); |
3858 | ||
7619683b | 3859 | if (link->state == LINK_STATE_LINGER) { |
5238e957 | 3860 | log_link_info(link, "Link re-added"); |
289e6774 | 3861 | link_set_state(link, LINK_STATE_CONFIGURING); |
0d4ad91d AR |
3862 | |
3863 | r = link_new_carrier_maps(link); | |
3864 | if (r < 0) | |
3865 | return r; | |
7619683b TG |
3866 | } |
3867 | ||
1c4baffc | 3868 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 3869 | if (r >= 0 && !streq(ifname, link->ifname)) { |
30de2b89 | 3870 | Manager *manager = link->manager; |
b8941f74 | 3871 | |
30de2b89 | 3872 | log_link_info(link, "Interface name change detected, %s has been renamed to %s.", link->ifname, ifname); |
0d4ad91d | 3873 | |
30de2b89 YW |
3874 | link_drop(link); |
3875 | r = link_add(manager, m, &link); | |
3876 | if (r < 0) | |
3877 | return r; | |
b8941f74 TG |
3878 | } |
3879 | ||
1c4baffc | 3880 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
3881 | if (r >= 0 && mtu > 0) { |
3882 | link->mtu = mtu; | |
4e964aa0 | 3883 | if (link->original_mtu == 0) { |
afe7fd56 | 3884 | link->original_mtu = mtu; |
6a7a4e4d | 3885 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
3886 | } |
3887 | ||
3888 | if (link->dhcp_client) { | |
3c9b8860 TG |
3889 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
3890 | link->mtu); | |
fc95c359 YW |
3891 | if (r < 0) |
3892 | return log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); | |
afe7fd56 | 3893 | } |
7465dd22 PF |
3894 | |
3895 | if (link->radv) { | |
3896 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
3897 | if (r < 0) | |
3898 | return log_link_warning_errno(link, r, "Could not set MTU for Router Advertisement: %m"); | |
3899 | } | |
9842de0d | 3900 | } |
69629de9 | 3901 | |
e9189a1f TG |
3902 | /* The kernel may broadcast NEWLINK messages without the MAC address |
3903 | set, simply ignore them. */ | |
1c4baffc | 3904 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 3905 | if (r >= 0) { |
3c9b8860 TG |
3906 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
3907 | ETH_ALEN)) { | |
c49b33ac | 3908 | |
3c9b8860 TG |
3909 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
3910 | ETH_ALEN); | |
c49b33ac | 3911 | |
79008bdd | 3912 | log_link_debug(link, "MAC address: " |
20861203 TG |
3913 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
3914 | mac.ether_addr_octet[0], | |
3915 | mac.ether_addr_octet[1], | |
3916 | mac.ether_addr_octet[2], | |
3917 | mac.ether_addr_octet[3], | |
3918 | mac.ether_addr_octet[4], | |
3919 | mac.ether_addr_octet[5]); | |
c49b33ac | 3920 | |
20861203 TG |
3921 | if (link->ipv4ll) { |
3922 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
3923 | if (r < 0) |
3924 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 3925 | } |
c49b33ac | 3926 | |
20861203 | 3927 | if (link->dhcp_client) { |
3c9b8860 | 3928 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
3929 | (const uint8_t *) &link->mac, |
3930 | sizeof (link->mac), | |
3931 | ARPHRD_ETHER); | |
6a7a4e4d LP |
3932 | if (r < 0) |
3933 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
413708d1 | 3934 | |
fff1f40c YW |
3935 | r = dhcp4_set_client_identifier(link); |
3936 | if (r < 0) | |
3937 | return r; | |
c49b33ac | 3938 | } |
4138fb2c PF |
3939 | |
3940 | if (link->dhcp6_client) { | |
f24648a6 | 3941 | const DUID* duid = link_get_duid(link); |
8341a5c3 | 3942 | |
4138fb2c | 3943 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, |
76253e73 DW |
3944 | (const uint8_t *) &link->mac, |
3945 | sizeof (link->mac), | |
3946 | ARPHRD_ETHER); | |
6a7a4e4d LP |
3947 | if (r < 0) |
3948 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
413708d1 | 3949 | |
8217ed5e TH |
3950 | if (link->network->iaid_set) { |
3951 | r = sd_dhcp6_client_set_iaid(link->dhcp6_client, | |
3952 | link->network->iaid); | |
3953 | if (r < 0) | |
3954 | return log_link_warning_errno(link, r, "Could not update DHCPv6 IAID: %m"); | |
3955 | } | |
413708d1 | 3956 | |
8341a5c3 ZJS |
3957 | r = sd_dhcp6_client_set_duid(link->dhcp6_client, |
3958 | duid->type, | |
3959 | duid->raw_data_len > 0 ? duid->raw_data : NULL, | |
3960 | duid->raw_data_len); | |
413708d1 VK |
3961 | if (r < 0) |
3962 | return log_link_warning_errno(link, r, "Could not update DHCPv6 DUID: %m"); | |
4138fb2c | 3963 | } |
7465dd22 PF |
3964 | |
3965 | if (link->radv) { | |
3966 | r = sd_radv_set_mac(link->radv, &link->mac); | |
3967 | if (r < 0) | |
3968 | return log_link_warning_errno(link, r, "Could not update MAC for Router Advertisement: %m"); | |
3969 | } | |
420d2058 SS |
3970 | |
3971 | if (link->ndisc) { | |
3972 | r = sd_ndisc_set_mac(link->ndisc, &link->mac); | |
3973 | if (r < 0) | |
3974 | return log_link_warning_errno(link, r, "Could not update MAC for ndisc: %m"); | |
3975 | } | |
c49b33ac | 3976 | } |
4f882b2a TG |
3977 | } |
3978 | ||
a61bb41c TG |
3979 | had_carrier = link_has_carrier(link); |
3980 | ||
3981 | r = link_update_flags(link, m); | |
3982 | if (r < 0) | |
3983 | return r; | |
3984 | ||
273eec24 LP |
3985 | r = link_update_lldp(link); |
3986 | if (r < 0) | |
3987 | return r; | |
3988 | ||
a61bb41c TG |
3989 | carrier_gained = !had_carrier && link_has_carrier(link); |
3990 | carrier_lost = had_carrier && !link_has_carrier(link); | |
3991 | ||
3992 | if (carrier_gained) { | |
6a7a4e4d | 3993 | log_link_info(link, "Gained carrier"); |
a61bb41c | 3994 | |
9c0a72f9 TG |
3995 | r = link_carrier_gained(link); |
3996 | if (r < 0) | |
3997 | return r; | |
a61bb41c | 3998 | } else if (carrier_lost) { |
6a7a4e4d | 3999 | log_link_info(link, "Lost carrier"); |
a61bb41c | 4000 | |
9c0a72f9 TG |
4001 | r = link_carrier_lost(link); |
4002 | if (r < 0) | |
a61bb41c | 4003 | return r; |
a61bb41c TG |
4004 | } |
4005 | ||
4006 | return 0; | |
dd3efc09 | 4007 | } |
fe8db0c5 | 4008 | |
b295beea LP |
4009 | static void print_link_hashmap(FILE *f, const char *prefix, Hashmap* h) { |
4010 | bool space = false; | |
4011 | Iterator i; | |
4012 | Link *link; | |
4013 | ||
4014 | assert(f); | |
4015 | assert(prefix); | |
4016 | ||
4017 | if (hashmap_isempty(h)) | |
4018 | return; | |
4019 | ||
0d536673 | 4020 | fputs(prefix, f); |
b295beea LP |
4021 | HASHMAP_FOREACH(link, h, i) { |
4022 | if (space) | |
0d536673 | 4023 | fputc(' ', f); |
b295beea LP |
4024 | |
4025 | fprintf(f, "%i", link->ifindex); | |
4026 | space = true; | |
4027 | } | |
4028 | ||
0d536673 | 4029 | fputc('\n', f); |
b295beea LP |
4030 | } |
4031 | ||
fe8db0c5 | 4032 | int link_save(Link *link) { |
68a8723c | 4033 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 4034 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 4035 | const char *admin_state, *oper_state; |
e7780c8d | 4036 | Address *a; |
c1eb9872 | 4037 | Route *route; |
e7780c8d | 4038 | Iterator i; |
fe8db0c5 TG |
4039 | int r; |
4040 | ||
4041 | assert(link); | |
4042 | assert(link->state_file); | |
68a8723c | 4043 | assert(link->lease_file); |
bbf7c048 TG |
4044 | assert(link->manager); |
4045 | ||
370e9930 | 4046 | if (link->state == LINK_STATE_LINGER) { |
6990fb6b | 4047 | (void) unlink(link->state_file); |
370e9930 TG |
4048 | return 0; |
4049 | } | |
4050 | ||
34437b4f LP |
4051 | link_lldp_save(link); |
4052 | ||
deb2e523 TG |
4053 | admin_state = link_state_to_string(link->state); |
4054 | assert(admin_state); | |
4055 | ||
e375dcde TG |
4056 | oper_state = link_operstate_to_string(link->operstate); |
4057 | assert(oper_state); | |
deb2e523 | 4058 | |
fe8db0c5 TG |
4059 | r = fopen_temporary(link->state_file, &f, &temp_path); |
4060 | if (r < 0) | |
6a7a4e4d | 4061 | goto fail; |
fe8db0c5 | 4062 | |
5512a963 | 4063 | (void) fchmod(fileno(f), 0644); |
fe8db0c5 TG |
4064 | |
4065 | fprintf(f, | |
4066 | "# This is private data. Do not parse.\n" | |
deb2e523 | 4067 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
4068 | "OPER_STATE=%s\n", |
4069 | admin_state, oper_state); | |
fe8db0c5 | 4070 | |
bcb7a07e | 4071 | if (link->network) { |
ea352b40 | 4072 | bool space; |
07bdc70d | 4073 | sd_dhcp6_lease *dhcp6_lease = NULL; |
b2a81c0b LP |
4074 | const char *dhcp_domainname = NULL; |
4075 | char **dhcp6_domains = NULL; | |
b85bc551 | 4076 | char **dhcp_domains = NULL; |
5512a963 | 4077 | unsigned j; |
07bdc70d | 4078 | |
c1a38904 MTL |
4079 | fprintf(f, "REQUIRED_FOR_ONLINE=%s\n", |
4080 | yes_no(link->network->required_for_online)); | |
4081 | ||
4ac77d63 YW |
4082 | fprintf(f, "REQUIRED_OPER_STATE_FOR_ONLINE=%s\n", |
4083 | strempty(link_operstate_to_string(link->network->required_operstate_for_online))); | |
4084 | ||
07bdc70d | 4085 | if (link->dhcp6_client) { |
4058d339 TG |
4086 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, &dhcp6_lease); |
4087 | if (r < 0 && r != -ENOMSG) | |
07bdc70d PF |
4088 | log_link_debug(link, "No DHCPv6 lease"); |
4089 | } | |
b0e39c82 | 4090 | |
adc5b2e2 TG |
4091 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
4092 | ||
0d536673 | 4093 | fputs("DNS=", f); |
ea352b40 | 4094 | space = false; |
5512a963 LP |
4095 | |
4096 | for (j = 0; j < link->network->n_dns; j++) { | |
4097 | _cleanup_free_ char *b = NULL; | |
4098 | ||
4099 | r = in_addr_to_string(link->network->dns[j].family, | |
4100 | &link->network->dns[j].address, &b); | |
4101 | if (r < 0) { | |
4102 | log_debug_errno(r, "Failed to format address, ignoring: %m"); | |
4103 | continue; | |
4104 | } | |
4105 | ||
4106 | if (space) | |
0d536673 LP |
4107 | fputc(' ', f); |
4108 | fputs(b, f); | |
5512a963 LP |
4109 | space = true; |
4110 | } | |
d5314fff | 4111 | |
27cb34f5 | 4112 | if (link->network->dhcp_use_dns && |
b0e39c82 TG |
4113 | link->dhcp_lease) { |
4114 | const struct in_addr *addresses; | |
4115 | ||
4116 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
072320ea TH |
4117 | if (r > 0) |
4118 | if (serialize_in_addrs(f, addresses, r, space, in4_addr_is_non_local) > 0) | |
4119 | space = true; | |
07bdc70d PF |
4120 | } |
4121 | ||
27cb34f5 | 4122 | if (link->network->dhcp_use_dns && dhcp6_lease) { |
07bdc70d PF |
4123 | struct in6_addr *in6_addrs; |
4124 | ||
4125 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
4126 | if (r > 0) { | |
4127 | if (space) | |
0d536673 | 4128 | fputc(' ', f); |
07bdc70d | 4129 | serialize_in6_addrs(f, in6_addrs, r); |
1e7a0e21 LP |
4130 | space = true; |
4131 | } | |
4132 | } | |
4133 | ||
4134 | /* Make sure to flush out old entries before we use the NDISC data */ | |
4135 | ndisc_vacuum(link); | |
4136 | ||
b296797f | 4137 | if (link->network->ipv6_accept_ra_use_dns && link->ndisc_rdnss) { |
1e7a0e21 LP |
4138 | NDiscRDNSS *dd; |
4139 | ||
4140 | SET_FOREACH(dd, link->ndisc_rdnss, i) { | |
4141 | if (space) | |
0d536673 | 4142 | fputc(' ', f); |
1e7a0e21 LP |
4143 | |
4144 | serialize_in6_addrs(f, &dd->address, 1); | |
4145 | space = true; | |
b0e39c82 TG |
4146 | } |
4147 | } | |
4148 | ||
0d536673 | 4149 | fputc('\n', f); |
b0e39c82 | 4150 | |
0d536673 | 4151 | fputs("NTP=", f); |
ea352b40 | 4152 | space = false; |
3df9bec5 | 4153 | fputstrv(f, link->network->ntp, NULL, &space); |
d5314fff | 4154 | |
27cb34f5 | 4155 | if (link->network->dhcp_use_ntp && |
b0e39c82 TG |
4156 | link->dhcp_lease) { |
4157 | const struct in_addr *addresses; | |
4158 | ||
4159 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
072320ea TH |
4160 | if (r > 0) |
4161 | if (serialize_in_addrs(f, addresses, r, space, in4_addr_is_non_local) > 0) | |
4162 | space = true; | |
07bdc70d PF |
4163 | } |
4164 | ||
27cb34f5 | 4165 | if (link->network->dhcp_use_ntp && dhcp6_lease) { |
07bdc70d PF |
4166 | struct in6_addr *in6_addrs; |
4167 | char **hosts; | |
07bdc70d PF |
4168 | |
4169 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
4170 | &in6_addrs); | |
4171 | if (r > 0) { | |
4172 | if (space) | |
0d536673 | 4173 | fputc(' ', f); |
07bdc70d PF |
4174 | serialize_in6_addrs(f, in6_addrs, r); |
4175 | space = true; | |
4176 | } | |
4177 | ||
4178 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
3df9bec5 LP |
4179 | if (r > 0) |
4180 | fputstrv(f, hosts, NULL, &space); | |
b0e39c82 TG |
4181 | } |
4182 | ||
0d536673 | 4183 | fputc('\n', f); |
bd8f6538 | 4184 | |
b2a81c0b | 4185 | if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
b85bc551 | 4186 | if (link->dhcp_lease) { |
b2a81c0b | 4187 | (void) sd_dhcp_lease_get_domainname(link->dhcp_lease, &dhcp_domainname); |
b85bc551 DW |
4188 | (void) sd_dhcp_lease_get_search_domains(link->dhcp_lease, &dhcp_domains); |
4189 | } | |
b2a81c0b LP |
4190 | if (dhcp6_lease) |
4191 | (void) sd_dhcp6_lease_get_domains(dhcp6_lease, &dhcp6_domains); | |
07bdc70d PF |
4192 | } |
4193 | ||
5e2a51d5 | 4194 | ordered_set_print(f, "DOMAINS=", link->network->search_domains); |
07bdc70d | 4195 | |
1e7a0e21 LP |
4196 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) { |
4197 | NDiscDNSSL *dd; | |
9b4d1882 | 4198 | |
1e7a0e21 LP |
4199 | if (dhcp_domainname) |
4200 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
4201 | if (dhcp_domains) |
4202 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
4203 | if (dhcp6_domains) |
4204 | fputstrv(f, dhcp6_domains, NULL, &space); | |
4205 | ||
4206 | SET_FOREACH(dd, link->ndisc_dnssl, i) | |
4207 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); | |
4208 | } | |
b2a81c0b | 4209 | |
0d536673 | 4210 | fputc('\n', f); |
6192b846 | 4211 | |
5e2a51d5 | 4212 | ordered_set_print(f, "ROUTE_DOMAINS=", link->network->route_domains); |
b2a81c0b | 4213 | |
1e7a0e21 LP |
4214 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE) { |
4215 | NDiscDNSSL *dd; | |
b2a81c0b | 4216 | |
1e7a0e21 LP |
4217 | if (dhcp_domainname) |
4218 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
4219 | if (dhcp_domains) |
4220 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
4221 | if (dhcp6_domains) |
4222 | fputstrv(f, dhcp6_domains, NULL, &space); | |
4223 | ||
4224 | SET_FOREACH(dd, link->ndisc_dnssl, i) | |
4225 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); | |
4226 | } | |
b2a81c0b | 4227 | |
0d536673 | 4228 | fputc('\n', f); |
67272d15 | 4229 | |
3c9b8860 | 4230 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 4231 | resolve_support_to_string(link->network->llmnr)); |
aaa297d4 LP |
4232 | fprintf(f, "MDNS=%s\n", |
4233 | resolve_support_to_string(link->network->mdns)); | |
7ece6f58 LP |
4234 | if (link->network->dns_default_route >= 0) |
4235 | fprintf(f, "DNS_DEFAULT_ROUTE=%s\n", yes_no(link->network->dns_default_route)); | |
e7780c8d | 4236 | |
c9299be2 IT |
4237 | if (link->network->dns_over_tls_mode != _DNS_OVER_TLS_MODE_INVALID) |
4238 | fprintf(f, "DNS_OVER_TLS=%s\n", | |
4239 | dns_over_tls_mode_to_string(link->network->dns_over_tls_mode)); | |
d050561a | 4240 | |
ad6c0475 LP |
4241 | if (link->network->dnssec_mode != _DNSSEC_MODE_INVALID) |
4242 | fprintf(f, "DNSSEC=%s\n", | |
4243 | dnssec_mode_to_string(link->network->dnssec_mode)); | |
4244 | ||
8a516214 LP |
4245 | if (!set_isempty(link->network->dnssec_negative_trust_anchors)) { |
4246 | const char *n; | |
4247 | ||
0d536673 | 4248 | fputs("DNSSEC_NTA=", f); |
8a516214 | 4249 | space = false; |
d390f8ef LP |
4250 | SET_FOREACH(n, link->network->dnssec_negative_trust_anchors, i) |
4251 | fputs_with_space(f, n, NULL, &space); | |
0d536673 | 4252 | fputc('\n', f); |
8a516214 LP |
4253 | } |
4254 | ||
0d536673 | 4255 | fputs("ADDRESSES=", f); |
e7780c8d TG |
4256 | space = false; |
4257 | SET_FOREACH(a, link->addresses, i) { | |
4258 | _cleanup_free_ char *address_str = NULL; | |
4259 | ||
4260 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
4261 | if (r < 0) | |
4262 | goto fail; | |
4263 | ||
e7780c8d TG |
4264 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
4265 | space = true; | |
4266 | } | |
0d536673 | 4267 | fputc('\n', f); |
c1eb9872 | 4268 | |
0d536673 | 4269 | fputs("ROUTES=", f); |
c1eb9872 TG |
4270 | space = false; |
4271 | SET_FOREACH(route, link->routes, i) { | |
4272 | _cleanup_free_ char *route_str = NULL; | |
4273 | ||
4274 | r = in_addr_to_string(route->family, &route->dst, &route_str); | |
4275 | if (r < 0) | |
4276 | goto fail; | |
4277 | ||
ecc3f340 ZJS |
4278 | fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%"PRIu32"/"USEC_FMT, |
4279 | space ? " " : "", route_str, | |
f833694d | 4280 | route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime); |
c1eb9872 TG |
4281 | space = true; |
4282 | } | |
4283 | ||
0d536673 | 4284 | fputc('\n', f); |
bcb7a07e | 4285 | } |
7374f9d8 | 4286 | |
b295beea LP |
4287 | print_link_hashmap(f, "CARRIER_BOUND_TO=", link->bound_to_links); |
4288 | print_link_hashmap(f, "CARRIER_BOUND_BY=", link->bound_by_links); | |
0d4ad91d | 4289 | |
8eb9058d | 4290 | if (link->dhcp_lease) { |
0bc70f1d | 4291 | struct in_addr address; |
8eb9058d LP |
4292 | const char *tz = NULL; |
4293 | ||
0bc70f1d TG |
4294 | assert(link->network); |
4295 | ||
8eb9058d LP |
4296 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); |
4297 | if (r >= 0) | |
4298 | fprintf(f, "TIMEZONE=%s\n", tz); | |
8eb9058d | 4299 | |
0bc70f1d TG |
4300 | r = sd_dhcp_lease_get_address(link->dhcp_lease, &address); |
4301 | if (r >= 0) { | |
0d536673 | 4302 | fputs("DHCP4_ADDRESS=", f); |
072320ea | 4303 | serialize_in_addrs(f, &address, 1, false, NULL); |
0d536673 | 4304 | fputc('\n', f); |
0bc70f1d | 4305 | } |
d9876a52 | 4306 | |
bd91b83e | 4307 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 4308 | if (r < 0) |
c2d6bd61 | 4309 | goto fail; |
fe8db0c5 | 4310 | |
7374f9d8 | 4311 | fprintf(f, |
b0e39c82 TG |
4312 | "DHCP_LEASE=%s\n", |
4313 | link->lease_file); | |
deb2e523 | 4314 | } else |
6990fb6b | 4315 | (void) unlink(link->lease_file); |
fe8db0c5 | 4316 | |
0bc70f1d TG |
4317 | if (link->ipv4ll) { |
4318 | struct in_addr address; | |
4319 | ||
4320 | r = sd_ipv4ll_get_address(link->ipv4ll, &address); | |
4321 | if (r >= 0) { | |
0d536673 | 4322 | fputs("IPV4LL_ADDRESS=", f); |
072320ea | 4323 | serialize_in_addrs(f, &address, 1, false, NULL); |
0d536673 | 4324 | fputc('\n', f); |
0bc70f1d TG |
4325 | } |
4326 | } | |
4327 | ||
c2d6bd61 LP |
4328 | r = fflush_and_check(f); |
4329 | if (r < 0) | |
4330 | goto fail; | |
fe8db0c5 | 4331 | |
c2d6bd61 | 4332 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 4333 | r = -errno; |
c2d6bd61 | 4334 | goto fail; |
fe8db0c5 TG |
4335 | } |
4336 | ||
c2d6bd61 | 4337 | return 0; |
dacd6cee | 4338 | |
c2d6bd61 | 4339 | fail: |
6a7a4e4d | 4340 | (void) unlink(link->state_file); |
6a7a4e4d LP |
4341 | if (temp_path) |
4342 | (void) unlink(temp_path); | |
4343 | ||
dacd6cee | 4344 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
4345 | } |
4346 | ||
84de38c5 TG |
4347 | /* The serialized state in /run is no longer up-to-date. */ |
4348 | void link_dirty(Link *link) { | |
4349 | int r; | |
4350 | ||
4351 | assert(link); | |
4352 | ||
0c241a37 SS |
4353 | /* mark manager dirty as link is dirty */ |
4354 | manager_dirty(link->manager); | |
4355 | ||
84de38c5 TG |
4356 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); |
4357 | if (r < 0) | |
4358 | /* allocation errors are ignored */ | |
4359 | return; | |
4360 | ||
4361 | r = set_put(link->manager->dirty_links, link); | |
0c241a37 SS |
4362 | if (r <= 0) |
4363 | /* don't take another ref if the link was already dirty */ | |
84de38c5 TG |
4364 | return; |
4365 | ||
4366 | link_ref(link); | |
4367 | } | |
4368 | ||
4369 | /* The serialized state in /run is up-to-date */ | |
4370 | void link_clean(Link *link) { | |
4371 | assert(link); | |
4372 | assert(link->manager); | |
4373 | ||
1046bf9b | 4374 | link_unref(set_remove(link->manager->dirty_links, link)); |
84de38c5 TG |
4375 | } |
4376 | ||
fe8db0c5 | 4377 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 4378 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 4379 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 4380 | [LINK_STATE_CONFIGURING] = "configuring", |
fe8db0c5 | 4381 | [LINK_STATE_CONFIGURED] = "configured", |
57bd6899 | 4382 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 4383 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 4384 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
4385 | }; |
4386 | ||
4387 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); |