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