]>
Commit | Line | Data |
---|---|---|
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 | ||
b9d74c40 LP |
113 | static bool link_ipv4ll_enabled(Link *link) { |
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 | ||
b9d74c40 LP |
131 | static bool link_ipv6ll_enabled(Link *link) { |
132 | assert(link); | |
133 | ||
fa709992 LP |
134 | if (!socket_ipv6_is_supported()) |
135 | return false; | |
136 | ||
d0d6a4cd TG |
137 | if (link->flags & IFF_LOOPBACK) |
138 | return false; | |
139 | ||
140 | if (!link->network) | |
141 | return false; | |
142 | ||
89b9a975 | 143 | if (STRPTR_IN_SET(link->kind, "vrf", "wireguard")) |
a8f5bba6 JD |
144 | return false; |
145 | ||
f2bfcdb9 YW |
146 | if (link->network->bond) |
147 | return false; | |
148 | ||
4b600505 YW |
149 | if (manager_sysctl_ipv6_enabled(link->manager) == 0) |
150 | return false; | |
151 | ||
e0ee46f2 | 152 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
153 | } |
154 | ||
439689c6 SS |
155 | static bool link_ipv6_enabled(Link *link) { |
156 | assert(link); | |
157 | ||
158 | if (!socket_ipv6_is_supported()) | |
159 | return false; | |
160 | ||
b102cdca | 161 | if (link->network->bond) |
2b00a4e0 TY |
162 | return false; |
163 | ||
4b600505 YW |
164 | if (manager_sysctl_ipv6_enabled(link->manager) == 0) |
165 | return false; | |
166 | ||
4cef7fe3 TY |
167 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
168 | return link_ipv6ll_enabled(link) || network_has_static_ipv6_addresses(link->network); | |
439689c6 SS |
169 | } |
170 | ||
7465dd22 PF |
171 | static bool link_radv_enabled(Link *link) { |
172 | assert(link); | |
173 | ||
174 | if (!link_ipv6ll_enabled(link)) | |
175 | return false; | |
176 | ||
55a7c78b | 177 | return link->network->router_prefix_delegation != RADV_PREFIX_DELEGATION_NONE; |
7465dd22 PF |
178 | } |
179 | ||
8e1ad1ea | 180 | static bool link_lldp_rx_enabled(Link *link) { |
b710e6b6 LP |
181 | assert(link); |
182 | ||
ce43e484 SS |
183 | if (link->flags & IFF_LOOPBACK) |
184 | return false; | |
185 | ||
b710e6b6 LP |
186 | if (link->iftype != ARPHRD_ETHER) |
187 | return false; | |
188 | ||
ce43e484 SS |
189 | if (!link->network) |
190 | return false; | |
191 | ||
764febc2 SS |
192 | /* LLDP should be handled on bridge slaves as those have a direct |
193 | * connection to their peers not on the bridge master. Linux doesn't | |
194 | * even (by default) forward lldp packets to the bridge master.*/ | |
195 | if (streq_ptr("bridge", link->kind)) | |
ce43e484 SS |
196 | return false; |
197 | ||
34437b4f | 198 | return link->network->lldp_mode != LLDP_MODE_NO; |
ce43e484 SS |
199 | } |
200 | ||
7272b25e | 201 | static bool link_lldp_emit_enabled(Link *link) { |
8e1ad1ea LP |
202 | assert(link); |
203 | ||
204 | if (link->flags & IFF_LOOPBACK) | |
205 | return false; | |
206 | ||
207 | if (link->iftype != ARPHRD_ETHER) | |
208 | return false; | |
209 | ||
210 | if (!link->network) | |
211 | return false; | |
212 | ||
7272b25e | 213 | return link->network->lldp_emit != LLDP_EMIT_NO; |
8e1ad1ea LP |
214 | } |
215 | ||
769d324c | 216 | static bool link_ipv4_forward_enabled(Link *link) { |
b9d74c40 LP |
217 | assert(link); |
218 | ||
5a8bcb67 LP |
219 | if (link->flags & IFF_LOOPBACK) |
220 | return false; | |
221 | ||
222 | if (!link->network) | |
223 | return false; | |
224 | ||
765afd5c LP |
225 | if (link->network->ip_forward == _ADDRESS_FAMILY_BOOLEAN_INVALID) |
226 | return false; | |
227 | ||
e0ee46f2 | 228 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
229 | } |
230 | ||
231 | static bool link_ipv6_forward_enabled(Link *link) { | |
b9d74c40 | 232 | assert(link); |
765afd5c LP |
233 | |
234 | if (!socket_ipv6_is_supported()) | |
235 | return false; | |
236 | ||
769d324c 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 | ||
4b600505 YW |
246 | if (manager_sysctl_ipv6_enabled(link->manager) == 0) |
247 | return false; | |
248 | ||
e0ee46f2 | 249 | return link->network->ip_forward & ADDRESS_FAMILY_IPV6; |
5a8bcb67 LP |
250 | } |
251 | ||
23d8b221 SS |
252 | static bool link_proxy_arp_enabled(Link *link) { |
253 | assert(link); | |
254 | ||
255 | if (link->flags & IFF_LOOPBACK) | |
256 | return false; | |
257 | ||
258 | if (!link->network) | |
259 | return false; | |
260 | ||
261 | if (link->network->proxy_arp < 0) | |
262 | return false; | |
263 | ||
264 | return true; | |
265 | } | |
266 | ||
b9d74c40 LP |
267 | static bool link_ipv6_accept_ra_enabled(Link *link) { |
268 | assert(link); | |
269 | ||
fa709992 LP |
270 | if (!socket_ipv6_is_supported()) |
271 | return false; | |
272 | ||
f5a8c43f TG |
273 | if (link->flags & IFF_LOOPBACK) |
274 | return false; | |
275 | ||
276 | if (!link->network) | |
277 | return false; | |
278 | ||
702c979f SS |
279 | if (!link_ipv6ll_enabled(link)) |
280 | return false; | |
281 | ||
f5a8c43f TG |
282 | /* If unset use system default (enabled if local forwarding is disabled. |
283 | * disabled if local forwarding is enabled). | |
284 | * If set, ignore or enforce RA independent of local forwarding state. | |
285 | */ | |
286 | if (link->network->ipv6_accept_ra < 0) | |
287 | /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ | |
288 | return !link_ipv6_forward_enabled(link); | |
289 | else if (link->network->ipv6_accept_ra > 0) | |
290 | /* accept RA even if ip_forward is enabled */ | |
291 | return true; | |
292 | else | |
293 | /* ignore RA */ | |
294 | return false; | |
295 | } | |
296 | ||
1f0d9695 | 297 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
fa709992 | 298 | assert(link); |
d68e2e59 LP |
299 | |
300 | if (!socket_ipv6_is_supported()) | |
301 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; | |
302 | ||
49092e22 | 303 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 304 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
305 | |
306 | if (!link->network) | |
1f0d9695 | 307 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
308 | |
309 | return link->network->ipv6_privacy_extensions; | |
310 | } | |
311 | ||
439689c6 | 312 | static int link_enable_ipv6(Link *link) { |
439689c6 SS |
313 | bool disabled; |
314 | int r; | |
315 | ||
316 | if (link->flags & IFF_LOOPBACK) | |
317 | return 0; | |
318 | ||
319 | disabled = !link_ipv6_enabled(link); | |
320 | ||
62e021a9 | 321 | r = sysctl_write_ip_property_boolean(AF_INET6, link->ifname, "disable_ipv6", disabled); |
439689c6 | 322 | if (r < 0) |
b106c586 ZJS |
323 | log_link_warning_errno(link, r, "Cannot %s IPv6 for interface %s: %m", |
324 | enable_disable(!disabled), link->ifname); | |
2d37cd53 | 325 | else |
b106c586 | 326 | log_link_info(link, "IPv6 successfully %sd", enable_disable(!disabled)); |
439689c6 SS |
327 | |
328 | return 0; | |
329 | } | |
330 | ||
34bf3c00 YW |
331 | static bool link_is_enslaved(Link *link) { |
332 | if (link->flags & IFF_SLAVE) | |
333 | /* Even if the link is not managed by networkd, honor IFF_SLAVE flag. */ | |
334 | return true; | |
335 | ||
336 | if (!link->enslaved_raw) | |
337 | return false; | |
338 | ||
339 | if (!link->network) | |
340 | return false; | |
341 | ||
342 | if (link->network->bridge) | |
343 | /* TODO: support the case when link is not managed by networkd. */ | |
344 | return true; | |
345 | ||
346 | return false; | |
347 | } | |
348 | ||
45e11abf YW |
349 | static void link_update_master_operstate(Link *link, NetDev *netdev) { |
350 | Link *master; | |
351 | ||
352 | if (!netdev) | |
353 | return; | |
354 | ||
355 | if (link_get(link->manager, netdev->ifindex, &master) < 0) | |
356 | return; | |
357 | ||
358 | link_update_operstate(master, true); | |
359 | } | |
360 | ||
361 | void link_update_operstate(Link *link, bool also_update_master) { | |
84de38c5 | 362 | LinkOperationalState operstate; |
45e11abf | 363 | Iterator i; |
14153d1b | 364 | |
84de38c5 TG |
365 | assert(link); |
366 | ||
367 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
368 | operstate = LINK_OPERSTATE_DORMANT; | |
369 | else if (link_has_carrier(link)) { | |
370 | Address *address; | |
371 | uint8_t scope = RT_SCOPE_NOWHERE; | |
84de38c5 TG |
372 | |
373 | /* if we have carrier, check what addresses we have */ | |
374 | SET_FOREACH(address, link->addresses, i) { | |
375 | if (!address_is_ready(address)) | |
376 | continue; | |
377 | ||
378 | if (address->scope < scope) | |
379 | scope = address->scope; | |
380 | } | |
381 | ||
382 | /* for operstate we also take foreign addresses into account */ | |
383 | SET_FOREACH(address, link->addresses_foreign, i) { | |
384 | if (!address_is_ready(address)) | |
385 | continue; | |
386 | ||
387 | if (address->scope < scope) | |
388 | scope = address->scope; | |
389 | } | |
390 | ||
391 | if (scope < RT_SCOPE_SITE) | |
392 | /* universally accessible addresses found */ | |
393 | operstate = LINK_OPERSTATE_ROUTABLE; | |
394 | else if (scope < RT_SCOPE_HOST) | |
395 | /* only link or site local addresses found */ | |
396 | operstate = LINK_OPERSTATE_DEGRADED; | |
397 | else | |
398 | /* no useful addresses found */ | |
399 | operstate = LINK_OPERSTATE_CARRIER; | |
400 | } else if (link->flags & IFF_UP) | |
401 | operstate = LINK_OPERSTATE_NO_CARRIER; | |
402 | else | |
403 | operstate = LINK_OPERSTATE_OFF; | |
404 | ||
14153d1b | 405 | if (IN_SET(operstate, LINK_OPERSTATE_DEGRADED, LINK_OPERSTATE_CARRIER) && |
34bf3c00 | 406 | link_is_enslaved(link)) |
14153d1b YW |
407 | operstate = LINK_OPERSTATE_ENSLAVED; |
408 | ||
c9cc0383 | 409 | if (operstate >= LINK_OPERSTATE_CARRIER) { |
959f65d3 YW |
410 | Link *slave; |
411 | ||
5f707e12 | 412 | SET_FOREACH(slave, link->slaves, i) { |
959f65d3 YW |
413 | link_update_operstate(slave, false); |
414 | ||
c9cc0383 YW |
415 | if (slave->operstate < LINK_OPERSTATE_CARRIER) |
416 | operstate = LINK_OPERSTATE_DEGRADED_CARRIER; | |
959f65d3 YW |
417 | } |
418 | } | |
419 | ||
84de38c5 TG |
420 | if (link->operstate != operstate) { |
421 | link->operstate = operstate; | |
422 | link_send_changed(link, "OperationalState", NULL); | |
423 | link_dirty(link); | |
84de38c5 | 424 | } |
959f65d3 | 425 | |
45e11abf YW |
426 | if (also_update_master && link->network) { |
427 | link_update_master_operstate(link, link->network->bond); | |
428 | link_update_master_operstate(link, link->network->bridge); | |
959f65d3 | 429 | } |
84de38c5 TG |
430 | } |
431 | ||
51d18171 TG |
432 | #define FLAG_STRING(string, flag, old, new) \ |
433 | (((old ^ new) & flag) \ | |
434 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
435 | : "") | |
436 | ||
1c4baffc | 437 | static int link_update_flags(Link *link, sd_netlink_message *m) { |
51d18171 TG |
438 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
439 | uint8_t operstate; | |
440 | int r; | |
441 | ||
442 | assert(link); | |
443 | ||
444 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
445 | if (r < 0) |
446 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 447 | |
1c4baffc | 448 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
449 | if (r < 0) |
450 | /* if we got a message without operstate, take it to mean | |
451 | the state was unchanged */ | |
452 | operstate = link->kernel_operstate; | |
453 | ||
454 | if ((link->flags == flags) && (link->kernel_operstate == operstate)) | |
455 | return 0; | |
456 | ||
457 | if (link->flags != flags) { | |
6a7a4e4d | 458 | 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 |
459 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
460 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
461 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
462 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
463 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
464 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
465 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
466 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
467 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
468 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
469 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
470 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
471 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
472 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
473 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
474 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
475 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
476 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
477 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
478 | ||
479 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
480 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
481 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
482 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
483 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
484 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
485 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
486 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
487 | ||
488 | /* link flags are currently at most 18 bits, let's align to | |
489 | * printing 20 */ | |
490 | if (unknown_flags_added) | |
79008bdd | 491 | log_link_debug(link, |
6a7a4e4d | 492 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
493 | unknown_flags_added); |
494 | ||
495 | if (unknown_flags_removed) | |
79008bdd | 496 | log_link_debug(link, |
6a7a4e4d | 497 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
498 | unknown_flags_removed); |
499 | } | |
500 | ||
501 | link->flags = flags; | |
502 | link->kernel_operstate = operstate; | |
503 | ||
959f65d3 | 504 | link_update_operstate(link, true); |
51d18171 TG |
505 | |
506 | return 0; | |
507 | } | |
508 | ||
1046bf9b YW |
509 | DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_unref); |
510 | ||
1c4baffc | 511 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
8e766630 | 512 | _cleanup_(link_unrefp) Link *link = NULL; |
505f8da7 | 513 | uint16_t type; |
6cad256d | 514 | const char *ifname, *kind = NULL; |
505f8da7 | 515 | int r, ifindex; |
b710e6b6 | 516 | unsigned short iftype; |
f579559b | 517 | |
0c2f9b84 | 518 | assert(manager); |
505f8da7 | 519 | assert(message); |
f579559b TG |
520 | assert(ret); |
521 | ||
6cad256d TJ |
522 | /* check for link kind */ |
523 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
524 | if (r == 0) { | |
db2f8a2e | 525 | (void) sd_netlink_message_read_string(message, IFLA_INFO_KIND, &kind); |
6cad256d TJ |
526 | r = sd_netlink_message_exit_container(message); |
527 | if (r < 0) | |
528 | return r; | |
529 | } | |
530 | ||
1c4baffc | 531 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
532 | if (r < 0) |
533 | return r; | |
534 | else if (type != RTM_NEWLINK) | |
535 | return -EINVAL; | |
536 | ||
537 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
538 | if (r < 0) | |
539 | return r; | |
540 | else if (ifindex <= 0) | |
541 | return -EINVAL; | |
542 | ||
b710e6b6 LP |
543 | r = sd_rtnl_message_link_get_type(message, &iftype); |
544 | if (r < 0) | |
545 | return r; | |
546 | ||
1c4baffc | 547 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
548 | if (r < 0) |
549 | return r; | |
550 | ||
17f9c355 | 551 | link = new(Link, 1); |
f579559b TG |
552 | if (!link) |
553 | return -ENOMEM; | |
554 | ||
17f9c355 YW |
555 | *link = (Link) { |
556 | .n_ref = 1, | |
557 | .manager = manager, | |
558 | .state = LINK_STATE_PENDING, | |
559 | .rtnl_extended_attrs = true, | |
560 | .ifindex = ifindex, | |
561 | .iftype = iftype, | |
562 | }; | |
563 | ||
505f8da7 TG |
564 | link->ifname = strdup(ifname); |
565 | if (!link->ifname) | |
566 | return -ENOMEM; | |
f579559b | 567 | |
6cad256d TJ |
568 | if (kind) { |
569 | link->kind = strdup(kind); | |
570 | if (!link->kind) | |
571 | return -ENOMEM; | |
572 | } | |
573 | ||
cbff7170 TJ |
574 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t *)&link->master_ifindex); |
575 | if (r < 0) | |
576 | log_link_debug_errno(link, r, "New device has no master, continuing without"); | |
577 | ||
1c4baffc | 578 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 579 | if (r < 0) |
34437b4f | 580 | log_link_debug_errno(link, r, "MAC address not found for new device, continuing without"); |
512922f8 | 581 | |
34437b4f | 582 | if (asprintf(&link->state_file, "/run/systemd/netif/links/%d", link->ifindex) < 0) |
315db1a8 | 583 | return -ENOMEM; |
fe8db0c5 | 584 | |
34437b4f | 585 | if (asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", link->ifindex) < 0) |
68a8723c TG |
586 | return -ENOMEM; |
587 | ||
34437b4f | 588 | if (asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", link->ifindex) < 0) |
49699bac SS |
589 | return -ENOMEM; |
590 | ||
d5099efc | 591 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
592 | if (r < 0) |
593 | return r; | |
594 | ||
595 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
596 | if (r < 0) |
597 | return r; | |
598 | ||
51d18171 TG |
599 | r = link_update_flags(link, message); |
600 | if (r < 0) | |
601 | return r; | |
602 | ||
1cc6c93a | 603 | *ret = TAKE_PTR(link); |
f579559b TG |
604 | |
605 | return 0; | |
606 | } | |
607 | ||
8301aa0b | 608 | static Link *link_free(Link *link) { |
5f707e12 | 609 | Link *carrier; |
428fd0a7 | 610 | Address *address; |
ddfc4f6e | 611 | Route *route; |
bce67bbe | 612 | Iterator i; |
428fd0a7 | 613 | |
8301aa0b | 614 | assert(link); |
f579559b | 615 | |
ddfc4f6e YW |
616 | while ((route = set_first(link->routes))) |
617 | route_free(route); | |
618 | ||
619 | while ((route = set_first(link->routes_foreign))) | |
620 | route_free(route); | |
621 | ||
622 | link->routes = set_free(link->routes); | |
623 | link->routes_foreign = set_free(link->routes_foreign); | |
624 | ||
0ade014c YW |
625 | while ((address = set_first(link->addresses))) |
626 | address_free(address); | |
cf1d700d | 627 | |
0ade014c YW |
628 | while ((address = set_first(link->addresses_foreign))) |
629 | address_free(address); | |
adda1ed9 | 630 | |
4701725c | 631 | link->addresses = set_free(link->addresses); |
4701725c | 632 | link->addresses_foreign = set_free(link->addresses_foreign); |
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 AR |
665 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) |
666 | hashmap_remove(link->bound_to_links, INT_TO_PTR(carrier->ifindex)); | |
667 | hashmap_free(link->bound_to_links); | |
668 | ||
669 | HASHMAP_FOREACH (carrier, link->bound_by_links, i) | |
670 | hashmap_remove(link->bound_by_links, INT_TO_PTR(carrier->ifindex)); | |
671 | hashmap_free(link->bound_by_links); | |
672 | ||
5f707e12 | 673 | set_free_with_destructor(link->slaves, link_unref); |
033295c1 | 674 | |
8301aa0b | 675 | return mfree(link); |
14b746f7 TG |
676 | } |
677 | ||
8301aa0b | 678 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 679 | |
11a7f229 TG |
680 | int link_get(Manager *m, int ifindex, Link **ret) { |
681 | Link *link; | |
11a7f229 TG |
682 | |
683 | assert(m); | |
11a7f229 TG |
684 | assert(ifindex); |
685 | assert(ret); | |
686 | ||
ae06ab10 | 687 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
688 | if (!link) |
689 | return -ENODEV; | |
690 | ||
691 | *ret = link; | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
e331e246 TG |
696 | static void link_set_state(Link *link, LinkState state) { |
697 | assert(link); | |
698 | ||
699 | if (link->state == state) | |
700 | return; | |
701 | ||
0beb9542 YW |
702 | log_link_debug(link, "State changed: %s -> %s", |
703 | link_state_to_string(link->state), | |
704 | link_state_to_string(state)); | |
705 | ||
e331e246 TG |
706 | link->state = state; |
707 | ||
708 | link_send_changed(link, "AdministrativeState", NULL); | |
e331e246 TG |
709 | } |
710 | ||
57bd6899 TG |
711 | static void link_enter_unmanaged(Link *link) { |
712 | assert(link); | |
713 | ||
6a7a4e4d | 714 | log_link_debug(link, "Unmanaged"); |
57bd6899 | 715 | |
e331e246 | 716 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 717 | |
84de38c5 | 718 | link_dirty(link); |
57bd6899 TG |
719 | } |
720 | ||
111bb8f9 TG |
721 | static int link_stop_clients(Link *link) { |
722 | int r = 0, k; | |
723 | ||
724 | assert(link); | |
725 | assert(link->manager); | |
726 | assert(link->manager->event); | |
727 | ||
ba179154 | 728 | if (link->dhcp_client) { |
111bb8f9 | 729 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 730 | if (k < 0) |
36c7d709 | 731 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
732 | } |
733 | ||
ba179154 | 734 | if (link->ipv4ll) { |
111bb8f9 | 735 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d | 736 | if (k < 0) |
36c7d709 | 737 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); |
dd43110f TG |
738 | } |
739 | ||
f5a8c43f TG |
740 | if (link->dhcp6_client) { |
741 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
742 | if (k < 0) | |
36c7d709 | 743 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); |
f5a8c43f | 744 | } |
4138fb2c | 745 | |
1e7a0e21 LP |
746 | if (link->ndisc) { |
747 | k = sd_ndisc_stop(link->ndisc); | |
6a7a4e4d | 748 | if (k < 0) |
36c7d709 | 749 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
750 | } |
751 | ||
7465dd22 PF |
752 | if (link->radv) { |
753 | k = sd_radv_stop(link->radv); | |
754 | if (k < 0) | |
755 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
756 | } | |
757 | ||
7272b25e | 758 | link_lldp_emit_stop(link); |
111bb8f9 TG |
759 | return r; |
760 | } | |
761 | ||
b22d8a00 | 762 | void link_enter_failed(Link *link) { |
ef1ba606 | 763 | assert(link); |
f882c247 | 764 | |
370e9930 | 765 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
766 | return; |
767 | ||
6a7a4e4d | 768 | log_link_warning(link, "Failed"); |
449f7554 | 769 | |
e331e246 | 770 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 771 | |
111bb8f9 TG |
772 | link_stop_clients(link); |
773 | ||
84de38c5 | 774 | link_dirty(link); |
f882c247 TG |
775 | } |
776 | ||
4f434938 LP |
777 | static Address* link_find_dhcp_server_address(Link *link) { |
778 | Address *address; | |
779 | ||
780 | assert(link); | |
781 | assert(link->network); | |
782 | ||
d4cdbea5 | 783 | /* The first statically configured address if there is any */ |
4f434938 LP |
784 | LIST_FOREACH(addresses, address, link->network->static_addresses) { |
785 | ||
786 | if (address->family != AF_INET) | |
787 | continue; | |
788 | ||
af93291c | 789 | if (in_addr_is_null(address->family, &address->in_addr)) |
4f434938 LP |
790 | continue; |
791 | ||
792 | return address; | |
793 | } | |
794 | ||
795 | /* If that didn't work, find a suitable address we got from the pool */ | |
796 | LIST_FOREACH(addresses, address, link->pool_addresses) { | |
797 | if (address->family != AF_INET) | |
798 | continue; | |
799 | ||
800 | return address; | |
801 | } | |
802 | ||
803 | return NULL; | |
804 | } | |
805 | ||
7033af49 YW |
806 | static int link_join_netdevs_after_configured(Link *link) { |
807 | NetDev *netdev; | |
808 | Iterator i; | |
809 | int r; | |
810 | ||
811 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { | |
812 | if (netdev->ifindex > 0) | |
813 | /* Assume already enslaved. */ | |
814 | continue; | |
815 | ||
816 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_AFTER_CONFIGURED) | |
817 | continue; | |
818 | ||
819 | log_struct(LOG_DEBUG, | |
820 | LOG_LINK_INTERFACE(link), | |
821 | LOG_NETDEV_INTERFACE(netdev), | |
822 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); | |
823 | ||
824 | r = netdev_join(netdev, link, NULL); | |
825 | if (r < 0) | |
826 | return log_struct_errno(LOG_WARNING, r, | |
827 | LOG_LINK_INTERFACE(link), | |
828 | LOG_NETDEV_INTERFACE(netdev), | |
829 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); | |
830 | } | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
e3a7b048 | 835 | static void link_enter_configured(Link *link) { |
dd43110f TG |
836 | assert(link); |
837 | assert(link->network); | |
e3a7b048 | 838 | |
289e6774 | 839 | if (link->state != LINK_STATE_CONFIGURING) |
e3a7b048 | 840 | return; |
dd43110f | 841 | |
6a7a4e4d | 842 | log_link_info(link, "Configured"); |
dd43110f | 843 | |
e331e246 | 844 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 845 | |
7033af49 YW |
846 | (void) link_join_netdevs_after_configured(link); |
847 | ||
84de38c5 | 848 | link_dirty(link); |
dd43110f TG |
849 | } |
850 | ||
47079967 | 851 | static int link_request_set_routing_policy_rule(Link *link) { |
8a9b3a23 SS |
852 | RoutingPolicyRule *rule, *rrule = NULL; |
853 | int r; | |
854 | ||
855 | assert(link); | |
856 | assert(link->network); | |
857 | ||
2428613f YW |
858 | link_set_state(link, LINK_STATE_CONFIGURING); |
859 | link->routing_policy_rules_configured = false; | |
860 | ||
8a9b3a23 SS |
861 | LIST_FOREACH(rules, rule, link->network->rules) { |
862 | r = routing_policy_rule_get(link->manager, rule->family, &rule->from, rule->from_prefixlen, &rule->to, | |
926062f0 SS |
863 | rule->to_prefixlen, rule->tos, rule->fwmark, rule->table, rule->iif, rule->oif, |
864 | rule->protocol, &rule->sport, &rule->dport, &rrule); | |
e6b65ab7 | 865 | if (r == 0) { |
8a9b3a23 SS |
866 | (void) routing_policy_rule_make_local(link->manager, rrule); |
867 | continue; | |
868 | } | |
869 | ||
29889b4d | 870 | r = routing_policy_rule_configure(rule, link, NULL, false); |
8a9b3a23 SS |
871 | if (r < 0) { |
872 | log_link_warning_errno(link, r, "Could not set routing policy rules: %m"); | |
873 | link_enter_failed(link); | |
874 | return r; | |
875 | } | |
876 | ||
7715629e | 877 | link->routing_policy_rule_messages++; |
8a9b3a23 SS |
878 | } |
879 | ||
880 | routing_policy_rule_purge(link->manager, link); | |
7715629e ST |
881 | if (link->routing_policy_rule_messages == 0) { |
882 | link->routing_policy_rules_configured = true; | |
883 | link_check_ready(link); | |
884 | } else | |
885 | log_link_debug(link, "Setting routing policy rules"); | |
8a9b3a23 SS |
886 | |
887 | return 0; | |
888 | } | |
889 | ||
302a796f | 890 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
f882c247 TG |
891 | int r; |
892 | ||
1046bf9b | 893 | assert(link); |
7715629e | 894 | assert(link->route_messages > 0); |
289e6774 WKI |
895 | assert(IN_SET(link->state, LINK_STATE_CONFIGURING, |
896 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 897 | |
7715629e | 898 | link->route_messages--; |
f882c247 | 899 | |
77a008c0 | 900 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
901 | return 1; |
902 | ||
1c4baffc | 903 | r = sd_netlink_message_get_errno(m); |
c166a070 | 904 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 905 | log_link_warning_errno(link, r, "Could not set route: %m"); |
f882c247 | 906 | |
7715629e | 907 | if (link->route_messages == 0) { |
6a7a4e4d | 908 | log_link_debug(link, "Routes set"); |
7715629e | 909 | link->static_routes_configured = true; |
8012cd39 | 910 | link_check_ready(link); |
dd3efc09 | 911 | } |
f882c247 TG |
912 | |
913 | return 1; | |
914 | } | |
915 | ||
b5799eeb | 916 | int link_request_set_routes(Link *link) { |
bf61b05a LP |
917 | enum { |
918 | PHASE_NON_GATEWAY, /* First phase: Routes without a gateway */ | |
919 | PHASE_GATEWAY, /* Second phase: Routes with a gateway */ | |
920 | _PHASE_MAX | |
921 | } phase; | |
a6cc569e | 922 | Route *rt; |
f882c247 TG |
923 | int r; |
924 | ||
925 | assert(link); | |
926 | assert(link->network); | |
c42ff3a1 WKI |
927 | assert(link->addresses_configured); |
928 | assert(link->address_messages == 0); | |
289e6774 | 929 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 930 | |
289e6774 | 931 | link_set_state(link, LINK_STATE_CONFIGURING); |
2428613f | 932 | link->static_routes_configured = false; |
27c34f73 | 933 | |
47079967 | 934 | r = link_request_set_routing_policy_rule(link); |
f3ef324d YW |
935 | if (r < 0) |
936 | return r; | |
f882c247 | 937 | |
bf61b05a LP |
938 | /* First add the routes that enable us to talk to gateways, then add in the others that need a gateway. */ |
939 | for (phase = 0; phase < _PHASE_MAX; phase++) | |
940 | LIST_FOREACH(routes, rt, link->network->static_routes) { | |
0d34228f | 941 | |
bf61b05a LP |
942 | if (in_addr_is_null(rt->family, &rt->gw) != (phase == PHASE_NON_GATEWAY)) |
943 | continue; | |
a6cc569e | 944 | |
0d34228f SS |
945 | r = route_configure(rt, link, route_handler); |
946 | if (r < 0) { | |
947 | log_link_warning_errno(link, r, "Could not set routes: %m"); | |
948 | link_enter_failed(link); | |
949 | return r; | |
950 | } | |
951 | ||
952 | link->route_messages++; | |
953 | } | |
f5be5601 | 954 | |
7715629e ST |
955 | if (link->route_messages == 0) { |
956 | link->static_routes_configured = true; | |
8012cd39 | 957 | link_check_ready(link); |
431ca2ce | 958 | } else |
6a7a4e4d | 959 | log_link_debug(link, "Setting routes"); |
f882c247 TG |
960 | |
961 | return 0; | |
962 | } | |
963 | ||
6accfd31 DA |
964 | void link_check_ready(Link *link) { |
965 | Address *a; | |
966 | Iterator i; | |
967 | ||
968 | assert(link); | |
969 | ||
970 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
971 | return; | |
972 | ||
973 | if (!link->network) | |
974 | return; | |
975 | ||
976 | if (!link->addresses_configured) | |
977 | return; | |
978 | ||
979 | if (!link->neighbors_configured) | |
980 | return; | |
981 | ||
6aa5773b DA |
982 | SET_FOREACH(a, link->addresses, i) |
983 | if (!address_is_ready(a)) | |
984 | return; | |
985 | ||
986 | if (!link->addresses_ready) { | |
987 | link->addresses_ready = true; | |
988 | link_request_set_routes(link); | |
989 | } | |
990 | ||
6accfd31 DA |
991 | if (!link->static_routes_configured) |
992 | return; | |
993 | ||
994 | if (!link->routing_policy_rules_configured) | |
995 | return; | |
996 | ||
997 | if (link_ipv4ll_enabled(link)) | |
998 | if (!link->ipv4ll_address || | |
999 | !link->ipv4ll_route) | |
1000 | return; | |
1001 | ||
b102cdca YW |
1002 | if (link_ipv6ll_enabled(link) && |
1003 | in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) | |
1004 | return; | |
6accfd31 | 1005 | |
b102cdca YW |
1006 | if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && |
1007 | !link->dhcp4_configured) || | |
1008 | (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && | |
1009 | !link->dhcp6_configured) || | |
1010 | (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && | |
1011 | !link->dhcp4_configured && !link->dhcp6_configured)) | |
1012 | return; | |
6accfd31 | 1013 | |
b102cdca YW |
1014 | if (link_ipv6_accept_ra_enabled(link) && !link->ndisc_configured) |
1015 | return; | |
6accfd31 | 1016 | |
6accfd31 DA |
1017 | if (link->state != LINK_STATE_CONFIGURED) |
1018 | link_enter_configured(link); | |
1019 | ||
1020 | return; | |
1021 | } | |
1022 | ||
e4a71bf3 WKI |
1023 | static int link_request_set_neighbors(Link *link) { |
1024 | Neighbor *neighbor; | |
1025 | int r; | |
1026 | ||
1027 | assert(link); | |
1028 | assert(link->network); | |
1029 | assert(link->state != _LINK_STATE_INVALID); | |
1030 | ||
1031 | link_set_state(link, LINK_STATE_CONFIGURING); | |
2428613f | 1032 | link->neighbors_configured = false; |
e4a71bf3 WKI |
1033 | |
1034 | LIST_FOREACH(neighbors, neighbor, link->network->neighbors) { | |
1035 | r = neighbor_configure(neighbor, link, NULL); | |
1036 | if (r < 0) { | |
1037 | log_link_warning_errno(link, r, "Could not set neighbor: %m"); | |
1038 | link_enter_failed(link); | |
1039 | return r; | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | if (link->neighbor_messages == 0) { | |
1044 | link->neighbors_configured = true; | |
1045 | link_check_ready(link); | |
1046 | } else | |
1047 | log_link_debug(link, "Setting neighbors"); | |
1048 | ||
1049 | return 0; | |
1050 | } | |
1051 | ||
302a796f | 1052 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
f882c247 TG |
1053 | int r; |
1054 | ||
4958aee4 | 1055 | assert(rtnl); |
f5be5601 TG |
1056 | assert(m); |
1057 | assert(link); | |
1058 | assert(link->ifname); | |
7715629e | 1059 | assert(link->address_messages > 0); |
289e6774 | 1060 | assert(IN_SET(link->state, LINK_STATE_CONFIGURING, |
370e9930 | 1061 | LINK_STATE_FAILED, LINK_STATE_LINGER)); |
f882c247 | 1062 | |
7715629e | 1063 | link->address_messages--; |
f882c247 | 1064 | |
5da8149f | 1065 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
1066 | return 1; |
1067 | ||
1c4baffc | 1068 | r = sd_netlink_message_get_errno(m); |
c166a070 | 1069 | if (r < 0 && r != -EEXIST) |
a2fae7bb | 1070 | log_link_warning_errno(link, r, "could not set address: %m"); |
45af44d4 | 1071 | else if (r >= 0) |
200a0868 | 1072 | manager_rtnl_process_address(rtnl, m, link->manager); |
f882c247 | 1073 | |
7715629e | 1074 | if (link->address_messages == 0) { |
6a7a4e4d | 1075 | log_link_debug(link, "Addresses set"); |
c42ff3a1 | 1076 | link->addresses_configured = true; |
6aa5773b | 1077 | link_check_ready(link); |
dd3efc09 | 1078 | } |
f882c247 TG |
1079 | |
1080 | return 1; | |
1081 | } | |
1082 | ||
a380b2d4 | 1083 | static int link_push_uplink_dns_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
4f5f911e LP |
1084 | _cleanup_free_ struct in_addr *addresses = NULL; |
1085 | size_t n_addresses = 0, n_allocated = 0; | |
5512a963 | 1086 | unsigned i; |
4f5f911e LP |
1087 | |
1088 | log_debug("Copying DNS server information from %s", link->ifname); | |
1089 | ||
1090 | if (!link->network) | |
1091 | return 0; | |
1092 | ||
5512a963 | 1093 | for (i = 0; i < link->network->n_dns; i++) { |
49ad6829 | 1094 | struct in_addr ia; |
4f5f911e LP |
1095 | |
1096 | /* Only look for IPv4 addresses */ | |
5512a963 | 1097 | if (link->network->dns[i].family != AF_INET) |
4f5f911e LP |
1098 | continue; |
1099 | ||
49ad6829 LP |
1100 | ia = link->network->dns[i].address.in; |
1101 | ||
1102 | /* Never propagate obviously borked data */ | |
1103 | if (in4_addr_is_null(&ia) || in4_addr_is_localhost(&ia)) | |
1104 | continue; | |
1105 | ||
4f5f911e LP |
1106 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) |
1107 | return log_oom(); | |
1108 | ||
49ad6829 | 1109 | addresses[n_addresses++] = ia; |
4f5f911e LP |
1110 | } |
1111 | ||
5512a963 | 1112 | if (link->network->dhcp_use_dns && link->dhcp_lease) { |
4f5f911e | 1113 | const struct in_addr *da = NULL; |
072320ea | 1114 | int j, n; |
4f5f911e LP |
1115 | |
1116 | n = sd_dhcp_lease_get_dns(link->dhcp_lease, &da); | |
1117 | if (n > 0) { | |
1118 | ||
1119 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
1120 | return log_oom(); | |
1121 | ||
072320ea TH |
1122 | for (j = 0; j < n; j++) |
1123 | if (in4_addr_is_non_local(&da[j])) | |
1124 | addresses[n_addresses++] = da[j]; | |
4f5f911e LP |
1125 | } |
1126 | } | |
1127 | ||
1128 | if (n_addresses <= 0) | |
1129 | return 0; | |
1130 | ||
1131 | return sd_dhcp_server_set_dns(s, addresses, n_addresses); | |
1132 | } | |
1133 | ||
a380b2d4 | 1134 | static int link_push_uplink_ntp_to_dhcp_server(Link *link, sd_dhcp_server *s) { |
4f5f911e LP |
1135 | _cleanup_free_ struct in_addr *addresses = NULL; |
1136 | size_t n_addresses = 0, n_allocated = 0; | |
1137 | char **a; | |
1138 | ||
1139 | if (!link->network) | |
1140 | return 0; | |
1141 | ||
1142 | log_debug("Copying NTP server information from %s", link->ifname); | |
1143 | ||
1144 | STRV_FOREACH(a, link->network->ntp) { | |
1145 | struct in_addr ia; | |
1146 | ||
1147 | /* Only look for IPv4 addresses */ | |
1148 | if (inet_pton(AF_INET, *a, &ia) <= 0) | |
1149 | continue; | |
49ad6829 LP |
1150 | |
1151 | /* Never propagate obviously borked data */ | |
1152 | if (in4_addr_is_null(&ia) || in4_addr_is_localhost(&ia)) | |
1153 | continue; | |
4f5f911e LP |
1154 | |
1155 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + 1)) | |
1156 | return log_oom(); | |
1157 | ||
1158 | addresses[n_addresses++] = ia; | |
1159 | } | |
1160 | ||
5512a963 | 1161 | if (link->network->dhcp_use_ntp && link->dhcp_lease) { |
4f5f911e | 1162 | const struct in_addr *da = NULL; |
072320ea | 1163 | int j, n; |
4f5f911e LP |
1164 | |
1165 | n = sd_dhcp_lease_get_ntp(link->dhcp_lease, &da); | |
1166 | if (n > 0) { | |
1167 | ||
1168 | if (!GREEDY_REALLOC(addresses, n_allocated, n_addresses + n)) | |
1169 | return log_oom(); | |
1170 | ||
072320ea TH |
1171 | for (j = 0; j < n; j++) |
1172 | if (in4_addr_is_non_local(&da[j])) | |
1173 | addresses[n_addresses++] = da[j]; | |
4f5f911e LP |
1174 | } |
1175 | } | |
1176 | ||
1177 | if (n_addresses <= 0) | |
1178 | return 0; | |
1179 | ||
1180 | return sd_dhcp_server_set_ntp(s, addresses, n_addresses); | |
1181 | } | |
1182 | ||
f6bb7ac5 TJ |
1183 | static int link_set_bridge_fdb(Link *link) { |
1184 | FdbEntry *fdb_entry; | |
197e2809 | 1185 | int r; |
f6bb7ac5 TJ |
1186 | |
1187 | LIST_FOREACH(static_fdb_entries, fdb_entry, link->network->static_fdb_entries) { | |
1188 | r = fdb_entry_configure(link, fdb_entry); | |
197e2809 | 1189 | if (r < 0) |
f6bb7ac5 | 1190 | return log_link_error_errno(link, r, "Failed to add MAC entry to static MAC table: %m"); |
f6bb7ac5 TJ |
1191 | } |
1192 | ||
197e2809 | 1193 | return 0; |
f6bb7ac5 TJ |
1194 | } |
1195 | ||
289e6774 | 1196 | static int link_request_set_addresses(Link *link) { |
95b74ef6 | 1197 | AddressLabel *label; |
a6cc569e | 1198 | Address *ad; |
f882c247 TG |
1199 | int r; |
1200 | ||
1201 | assert(link); | |
1202 | assert(link->network); | |
f5be5601 | 1203 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 1204 | |
2428613f YW |
1205 | link_set_state(link, LINK_STATE_CONFIGURING); |
1206 | ||
1207 | /* Reset all *_configured flags we are configuring. */ | |
1208 | link->addresses_configured = false; | |
6aa5773b | 1209 | link->addresses_ready = false; |
2428613f YW |
1210 | link->neighbors_configured = false; |
1211 | link->static_routes_configured = false; | |
1212 | link->routing_policy_rules_configured = false; | |
1213 | ||
f6bb7ac5 TJ |
1214 | r = link_set_bridge_fdb(link); |
1215 | if (r < 0) | |
1216 | return r; | |
1217 | ||
f3ef324d YW |
1218 | r = link_request_set_neighbors(link); |
1219 | if (r < 0) | |
1220 | return r; | |
e4a71bf3 | 1221 | |
3d3d4255 | 1222 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
a47a6dae YW |
1223 | bool update; |
1224 | ||
1225 | update = address_get(link, ad->family, &ad->in_addr, ad->prefixlen, NULL) > 0; | |
1226 | ||
1227 | r = address_configure(ad, link, address_handler, update); | |
dd3efc09 | 1228 | if (r < 0) { |
5a8bcb67 | 1229 | log_link_warning_errno(link, r, "Could not set addresses: %m"); |
f5be5601 | 1230 | link_enter_failed(link); |
95b74ef6 SS |
1231 | return r; |
1232 | } | |
1233 | ||
7715629e | 1234 | link->address_messages++; |
95b74ef6 SS |
1235 | } |
1236 | ||
1237 | LIST_FOREACH(labels, label, link->network->address_labels) { | |
cccf9517 | 1238 | r = address_label_configure(label, link, NULL, false); |
95b74ef6 SS |
1239 | if (r < 0) { |
1240 | log_link_warning_errno(link, r, "Could not set address label: %m"); | |
1241 | link_enter_failed(link); | |
f5be5601 TG |
1242 | return r; |
1243 | } | |
1244 | ||
7715629e | 1245 | link->address_label_messages++; |
f882c247 TG |
1246 | } |
1247 | ||
d4cdbea5 TG |
1248 | /* now that we can figure out a default address for the dhcp server, |
1249 | start it */ | |
708c425d | 1250 | if (link_dhcp4_server_enabled(link) && (link->flags & IFF_UP)) { |
d4cdbea5 | 1251 | Address *address; |
4f5f911e LP |
1252 | Link *uplink = NULL; |
1253 | bool acquired_uplink = false; | |
d4cdbea5 TG |
1254 | |
1255 | address = link_find_dhcp_server_address(link); | |
1256 | if (!address) { | |
6a7a4e4d | 1257 | log_link_warning(link, "Failed to find suitable address for DHCPv4 server instance."); |
d4cdbea5 TG |
1258 | link_enter_failed(link); |
1259 | return 0; | |
1260 | } | |
1261 | ||
61986155 | 1262 | /* use the server address' subnet as the pool */ |
9b3a67c5 TG |
1263 | r = sd_dhcp_server_configure_pool(link->dhcp_server, &address->in_addr.in, address->prefixlen, |
1264 | link->network->dhcp_server_pool_offset, link->network->dhcp_server_pool_size); | |
d4cdbea5 TG |
1265 | if (r < 0) |
1266 | return r; | |
1267 | ||
1268 | /* TODO: | |
1269 | r = sd_dhcp_server_set_router(link->dhcp_server, | |
1270 | &main_address->in_addr.in); | |
1271 | if (r < 0) | |
1272 | return r; | |
d4cdbea5 TG |
1273 | */ |
1274 | ||
586ac6f7 LP |
1275 | if (link->network->dhcp_server_max_lease_time_usec > 0) { |
1276 | r = sd_dhcp_server_set_max_lease_time( | |
1277 | link->dhcp_server, | |
1278 | DIV_ROUND_UP(link->network->dhcp_server_max_lease_time_usec, USEC_PER_SEC)); | |
1279 | if (r < 0) | |
1280 | return r; | |
1281 | } | |
1282 | ||
1283 | if (link->network->dhcp_server_default_lease_time_usec > 0) { | |
1284 | r = sd_dhcp_server_set_default_lease_time( | |
1285 | link->dhcp_server, | |
1286 | DIV_ROUND_UP(link->network->dhcp_server_default_lease_time_usec, USEC_PER_SEC)); | |
1287 | if (r < 0) | |
1288 | return r; | |
1289 | } | |
1290 | ||
1a04db0f LP |
1291 | if (link->network->dhcp_server_emit_dns) { |
1292 | ||
4f5f911e | 1293 | if (link->network->n_dhcp_server_dns > 0) |
1a04db0f | 1294 | r = sd_dhcp_server_set_dns(link->dhcp_server, link->network->dhcp_server_dns, link->network->n_dhcp_server_dns); |
4f5f911e LP |
1295 | else { |
1296 | uplink = manager_find_uplink(link->manager, link); | |
1297 | acquired_uplink = true; | |
1298 | ||
1299 | if (!uplink) { | |
1300 | log_link_debug(link, "Not emitting DNS server information on link, couldn't find suitable uplink."); | |
1301 | r = 0; | |
1302 | } else | |
a380b2d4 | 1303 | r = link_push_uplink_dns_to_dhcp_server(uplink, link->dhcp_server); |
4f5f911e LP |
1304 | } |
1305 | if (r < 0) | |
1306 | log_link_warning_errno(link, r, "Failed to set DNS server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
1307 | } |
1308 | ||
1a04db0f LP |
1309 | if (link->network->dhcp_server_emit_ntp) { |
1310 | ||
4f5f911e | 1311 | if (link->network->n_dhcp_server_ntp > 0) |
1a04db0f | 1312 | r = sd_dhcp_server_set_ntp(link->dhcp_server, link->network->dhcp_server_ntp, link->network->n_dhcp_server_ntp); |
4f5f911e LP |
1313 | else { |
1314 | if (!acquired_uplink) | |
1315 | uplink = manager_find_uplink(link->manager, link); | |
1316 | ||
1317 | if (!uplink) { | |
1318 | log_link_debug(link, "Not emitting NTP server information on link, couldn't find suitable uplink."); | |
1319 | r = 0; | |
1320 | } else | |
a380b2d4 | 1321 | r = link_push_uplink_ntp_to_dhcp_server(uplink, link->dhcp_server); |
4f5f911e LP |
1322 | |
1323 | } | |
1324 | if (r < 0) | |
1325 | log_link_warning_errno(link, r, "Failed to set NTP server for DHCP server, ignoring: %m"); | |
1a04db0f LP |
1326 | } |
1327 | ||
77ff6022 | 1328 | r = sd_dhcp_server_set_emit_router(link->dhcp_server, link->network->dhcp_server_emit_router); |
fc95c359 YW |
1329 | if (r < 0) |
1330 | return log_link_warning_errno(link, r, "Failed to set router emission for DHCP server: %m"); | |
77ff6022 | 1331 | |
8eb9058d LP |
1332 | if (link->network->dhcp_server_emit_timezone) { |
1333 | _cleanup_free_ char *buffer = NULL; | |
0ab8a1b6 | 1334 | const char *tz = NULL; |
8eb9058d LP |
1335 | |
1336 | if (link->network->dhcp_server_timezone) | |
1337 | tz = link->network->dhcp_server_timezone; | |
1338 | else { | |
1339 | r = get_timezone(&buffer); | |
1340 | if (r < 0) | |
1341 | log_warning_errno(r, "Failed to determine timezone: %m"); | |
1342 | else | |
1343 | tz = buffer; | |
1344 | } | |
1345 | ||
1346 | if (tz) { | |
1347 | r = sd_dhcp_server_set_timezone(link->dhcp_server, tz); | |
1348 | if (r < 0) | |
1349 | return r; | |
1350 | } | |
1351 | } | |
7da7340a RJ |
1352 | if (!sd_dhcp_server_is_running(link->dhcp_server)) { |
1353 | r = sd_dhcp_server_start(link->dhcp_server); | |
1354 | if (r < 0) { | |
1355 | log_link_warning_errno(link, r, "Could not start DHCPv4 server instance: %m"); | |
8eb9058d | 1356 | |
7da7340a | 1357 | link_enter_failed(link); |
d4cdbea5 | 1358 | |
7da7340a RJ |
1359 | return 0; |
1360 | } | |
f3ef324d | 1361 | } |
d4cdbea5 | 1362 | |
6a7a4e4d | 1363 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
1364 | } |
1365 | ||
c42ff3a1 WKI |
1366 | if (link->address_messages == 0) { |
1367 | link->addresses_configured = true; | |
6aa5773b | 1368 | link_check_ready(link); |
c42ff3a1 | 1369 | } else |
6a7a4e4d | 1370 | log_link_debug(link, "Setting addresses"); |
431ca2ce | 1371 | |
f882c247 TG |
1372 | return 0; |
1373 | } | |
1374 | ||
13b498f9 TJ |
1375 | static int link_set_bridge_vlan(Link *link) { |
1376 | int r = 0; | |
1377 | ||
1378 | r = br_vlan_configure(link, link->network->pvid, link->network->br_vid_bitmap, link->network->br_untagged_bitmap); | |
1379 | if (r < 0) | |
1380 | log_link_error_errno(link, r, "Failed to assign VLANs to bridge port: %m"); | |
1381 | ||
1382 | return r; | |
1383 | } | |
1384 | ||
a60a720c | 1385 | static int link_set_proxy_arp(Link *link) { |
23d8b221 SS |
1386 | int r; |
1387 | ||
1388 | if (!link_proxy_arp_enabled(link)) | |
1389 | return 0; | |
1390 | ||
62e021a9 | 1391 | r = sysctl_write_ip_property_boolean(AF_INET, link->ifname, "proxy_arp", link->network->proxy_arp > 0); |
23d8b221 SS |
1392 | if (r < 0) |
1393 | log_link_warning_errno(link, r, "Cannot configure proxy ARP for interface: %m"); | |
1394 | ||
1395 | return 0; | |
1396 | } | |
1397 | ||
302a796f | 1398 | static int link_set_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
e1853b00 SS |
1399 | int r; |
1400 | ||
1046bf9b YW |
1401 | assert(link); |
1402 | ||
6a7a4e4d | 1403 | log_link_debug(link, "Set link"); |
e1853b00 | 1404 | |
1c4baffc | 1405 | r = sd_netlink_message_get_errno(m); |
e1853b00 | 1406 | if (r < 0 && r != -EEXIST) { |
f2341e0a | 1407 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
e1853b00 | 1408 | link_enter_failed(link); |
e1853b00 SS |
1409 | } |
1410 | ||
0ae286e6 | 1411 | return 1; |
e1853b00 SS |
1412 | } |
1413 | ||
55dc8c4a YW |
1414 | static int link_configure_after_setting_mtu(Link *link); |
1415 | ||
302a796f | 1416 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4f882b2a TG |
1417 | int r; |
1418 | ||
1419 | assert(m); | |
1420 | assert(link); | |
1421 | assert(link->ifname); | |
1422 | ||
55dc8c4a YW |
1423 | link->setting_mtu = false; |
1424 | ||
5da8149f | 1425 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1426 | return 1; |
1427 | ||
1c4baffc | 1428 | r = sd_netlink_message_get_errno(m); |
55dc8c4a | 1429 | if (r < 0) { |
a2fae7bb | 1430 | log_link_warning_errno(link, r, "Could not set MTU: %m"); |
55dc8c4a YW |
1431 | return 1; |
1432 | } | |
1433 | ||
1434 | log_link_debug(link, "Setting MTU done."); | |
1435 | ||
bd08ce56 | 1436 | if (link->state == LINK_STATE_INITIALIZED) |
55dc8c4a | 1437 | (void) link_configure_after_setting_mtu(link); |
4f882b2a TG |
1438 | |
1439 | return 1; | |
1440 | } | |
1441 | ||
40288ece | 1442 | int link_set_mtu(Link *link, uint32_t mtu, bool force) { |
4afd3348 | 1443 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f882b2a TG |
1444 | int r; |
1445 | ||
1446 | assert(link); | |
1447 | assert(link->manager); | |
1448 | assert(link->manager->rtnl); | |
1449 | ||
40288ece YW |
1450 | if (mtu == 0 || link->setting_mtu) |
1451 | return 0; | |
1452 | ||
1453 | if (force ? link->mtu == mtu : link->mtu >= mtu) | |
ee493106 YW |
1454 | return 0; |
1455 | ||
6a7a4e4d | 1456 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1457 | |
6a7a4e4d LP |
1458 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1459 | if (r < 0) | |
1460 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1461 | |
44b598a1 | 1462 | /* If IPv6 not configured (no static IPv6 address and IPv6LL autoconfiguration is disabled) |
b102cdca | 1463 | * for this interface, then disable IPv6 else enable it. */ |
44b598a1 SS |
1464 | (void) link_enable_ipv6(link); |
1465 | ||
1466 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes | |
72c2500b YW |
1467 | * on the interface. Bump up MTU bytes to IPV6_MTU_MIN. */ |
1468 | if (link_ipv6_enabled(link) && mtu < IPV6_MIN_MTU) { | |
44b598a1 SS |
1469 | |
1470 | log_link_warning(link, "Bumping MTU to " STRINGIFY(IPV6_MIN_MTU) ", as " | |
1471 | "IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes: %m"); | |
1472 | ||
72c2500b | 1473 | mtu = IPV6_MIN_MTU; |
44b598a1 SS |
1474 | } |
1475 | ||
1c4baffc | 1476 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1477 | if (r < 0) |
1478 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1479 | |
302a796f YW |
1480 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_mtu_handler, |
1481 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1482 | if (r < 0) |
1483 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1484 | |
ae941762 | 1485 | link_ref(link); |
1046bf9b | 1486 | link->setting_mtu = true; |
b226d99b | 1487 | |
4f882b2a TG |
1488 | return 0; |
1489 | } | |
1490 | ||
302a796f | 1491 | static int set_flags_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
99d2baa2 SS |
1492 | int r; |
1493 | ||
1494 | assert(m); | |
1495 | assert(link); | |
1496 | assert(link->ifname); | |
1497 | ||
1498 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1499 | return 1; | |
1500 | ||
1501 | r = sd_netlink_message_get_errno(m); | |
1502 | if (r < 0) | |
1503 | log_link_warning_errno(link, r, "Could not set link flags: %m"); | |
1504 | ||
1505 | return 1; | |
1506 | } | |
1507 | ||
1508 | static int link_set_flags(Link *link) { | |
1509 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1510 | unsigned ifi_change = 0; | |
1511 | unsigned ifi_flags = 0; | |
1512 | int r; | |
1513 | ||
1514 | assert(link); | |
1515 | assert(link->manager); | |
1516 | assert(link->manager->rtnl); | |
1517 | ||
1518 | if (link->flags & IFF_LOOPBACK) | |
1519 | return 0; | |
1520 | ||
1521 | if (!link->network) | |
1522 | return 0; | |
1523 | ||
866e6b7a | 1524 | if (link->network->arp < 0 && link->network->multicast < 0 && link->network->allmulticast < 0) |
99d2baa2 SS |
1525 | return 0; |
1526 | ||
1527 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1528 | if (r < 0) | |
1529 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1530 | ||
1531 | if (link->network->arp >= 0) { | |
1532 | ifi_change |= IFF_NOARP; | |
e6ebebbe SS |
1533 | SET_FLAG(ifi_flags, IFF_NOARP, link->network->arp == 0); |
1534 | } | |
1535 | ||
1536 | if (link->network->multicast >= 0) { | |
1537 | ifi_change |= IFF_MULTICAST; | |
1538 | SET_FLAG(ifi_flags, IFF_MULTICAST, link->network->multicast); | |
99d2baa2 SS |
1539 | } |
1540 | ||
866e6b7a SS |
1541 | if (link->network->allmulticast >= 0) { |
1542 | ifi_change |= IFF_ALLMULTI; | |
1543 | SET_FLAG(ifi_flags, IFF_ALLMULTI, link->network->allmulticast); | |
1544 | } | |
1545 | ||
99d2baa2 SS |
1546 | r = sd_rtnl_message_link_set_flags(req, ifi_flags, ifi_change); |
1547 | if (r < 0) | |
1548 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
1549 | ||
302a796f YW |
1550 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_flags_handler, |
1551 | link_netlink_destroy_callback, link); | |
99d2baa2 SS |
1552 | if (r < 0) |
1553 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1554 | ||
1555 | link_ref(link); | |
1556 | ||
1557 | return 0; | |
1558 | } | |
1559 | ||
e1853b00 | 1560 | static int link_set_bridge(Link *link) { |
4afd3348 | 1561 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
e1853b00 SS |
1562 | int r; |
1563 | ||
1564 | assert(link); | |
1565 | assert(link->network); | |
1566 | ||
6a7a4e4d LP |
1567 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1568 | if (r < 0) | |
1569 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
e1853b00 SS |
1570 | |
1571 | r = sd_rtnl_message_link_set_family(req, PF_BRIDGE); | |
6a7a4e4d LP |
1572 | if (r < 0) |
1573 | return log_link_error_errno(link, r, "Could not set message family: %m"); | |
e1853b00 | 1574 | |
1c4baffc | 1575 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); |
6a7a4e4d LP |
1576 | if (r < 0) |
1577 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
e1853b00 | 1578 | |
7f9915f0 SS |
1579 | if (link->network->use_bpdu >= 0) { |
1580 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, link->network->use_bpdu); | |
1581 | if (r < 0) | |
1582 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
1583 | } | |
eb7ff4dd | 1584 | |
7f9915f0 SS |
1585 | if (link->network->hairpin >= 0) { |
1586 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
1587 | if (r < 0) | |
1588 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
1589 | } | |
eb7ff4dd | 1590 | |
7f9915f0 SS |
1591 | if (link->network->fast_leave >= 0) { |
1592 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
1593 | if (r < 0) | |
1594 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
1595 | } | |
eb7ff4dd | 1596 | |
7f9915f0 SS |
1597 | if (link->network->allow_port_to_be_root >= 0) { |
1598 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, link->network->allow_port_to_be_root); | |
1599 | if (r < 0) | |
1600 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
eb7ff4dd | 1601 | |
7f9915f0 SS |
1602 | } |
1603 | ||
1604 | if (link->network->unicast_flood >= 0) { | |
1605 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
1606 | if (r < 0) | |
1607 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
d3aa8b49 | 1608 | } |
7f9915f0 | 1609 | |
7f15b714 TJ |
1610 | if (link->network->multicast_flood >= 0) { |
1611 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_FLOOD, link->network->multicast_flood); | |
1612 | if (r < 0) | |
1613 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MCAST_FLOOD attribute: %m"); | |
1614 | } | |
1615 | ||
d3aa8b49 SS |
1616 | if (link->network->multicast_to_unicast >= 0) { |
1617 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_TO_UCAST, link->network->multicast_to_unicast); | |
1618 | if (r < 0) | |
1619 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MCAST_TO_UCAST attribute: %m"); | |
7f9915f0 | 1620 | } |
eb7ff4dd | 1621 | |
7f15b714 TJ |
1622 | if (link->network->neighbor_suppression >= 0) { |
1623 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_NEIGH_SUPPRESS, link->network->neighbor_suppression); | |
1624 | if (r < 0) | |
1625 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_NEIGH_SUPPRESS attribute: %m"); | |
1626 | } | |
1627 | ||
1628 | if (link->network->learning >= 0) { | |
1629 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_LEARNING, link->network->learning); | |
1630 | if (r < 0) | |
1631 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_LEARNING attribute: %m"); | |
1632 | } | |
1633 | ||
34437b4f | 1634 | if (link->network->cost != 0) { |
1c4baffc | 1635 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); |
6a7a4e4d LP |
1636 | if (r < 0) |
1637 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
e1853b00 | 1638 | } |
d3aa8b49 | 1639 | |
b56be296 DJL |
1640 | if (link->network->priority != LINK_BRIDGE_PORT_PRIORITY_INVALID) { |
1641 | r = sd_netlink_message_append_u16(req, IFLA_BRPORT_PRIORITY, link->network->priority); | |
1642 | if (r < 0) | |
1643 | return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PRIORITY attribute: %m"); | |
1644 | } | |
e1853b00 | 1645 | |
1c4baffc | 1646 | r = sd_netlink_message_close_container(req); |
6a7a4e4d LP |
1647 | if (r < 0) |
1648 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
e1853b00 | 1649 | |
302a796f YW |
1650 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_set_handler, |
1651 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1652 | if (r < 0) |
1653 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
e1853b00 SS |
1654 | |
1655 | link_ref(link); | |
1656 | ||
1657 | return r; | |
1658 | } | |
1659 | ||
7fcee284 YW |
1660 | static int link_set_bond_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1661 | int r; | |
1662 | ||
1663 | assert(m); | |
1664 | assert(link); | |
1665 | assert(link->ifname); | |
1666 | ||
1667 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1668 | return 1; | |
1669 | ||
1670 | r = sd_netlink_message_get_errno(m); | |
1671 | if (r < 0) { | |
1672 | log_link_warning_errno(link, r, "Could not set bonding interface: %m"); | |
1673 | return 1; | |
1674 | } | |
1675 | ||
1676 | return 1; | |
1677 | } | |
1678 | ||
1679 | static int link_set_bond(Link *link) { | |
eb64b435 SS |
1680 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
1681 | int r; | |
1682 | ||
1683 | assert(link); | |
1684 | assert(link->network); | |
1685 | ||
1686 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_NEWLINK, link->network->bond->ifindex); | |
1687 | if (r < 0) | |
1688 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1689 | ||
1690 | r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK); | |
1691 | if (r < 0) | |
1692 | return log_link_error_errno(link, r, "Could not set netlink flags: %m"); | |
1693 | ||
1694 | r = sd_netlink_message_open_container(req, IFLA_LINKINFO); | |
1695 | if (r < 0) | |
1696 | return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m"); | |
1697 | ||
1698 | r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, "bond"); | |
1699 | if (r < 0) | |
1700 | return log_link_error_errno(link, r, "Could not append IFLA_INFO_DATA attribute: %m"); | |
1701 | ||
1702 | if (link->network->active_slave) { | |
1703 | r = sd_netlink_message_append_u32(req, IFLA_BOND_ACTIVE_SLAVE, link->ifindex); | |
1704 | if (r < 0) | |
1705 | return log_link_error_errno(link, r, "Could not append IFLA_BOND_ACTIVE_SLAVE attribute: %m"); | |
1706 | } | |
1707 | ||
1708 | if (link->network->primary_slave) { | |
1709 | r = sd_netlink_message_append_u32(req, IFLA_BOND_PRIMARY, link->ifindex); | |
1710 | if (r < 0) | |
1711 | return log_link_error_errno(link, r, "Could not append IFLA_BOND_PRIMARY attribute: %m"); | |
1712 | } | |
1713 | ||
1714 | r = sd_netlink_message_close_container(req); | |
1715 | if (r < 0) | |
1716 | return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m"); | |
1717 | ||
1718 | r = sd_netlink_message_close_container(req); | |
1719 | if (r < 0) | |
1720 | return log_link_error_errno(link, r, "Could not append IFLA_INFO_DATA attribute: %m"); | |
1721 | ||
7fcee284 | 1722 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_set_bond_handler, |
302a796f | 1723 | link_netlink_destroy_callback, link); |
eb64b435 SS |
1724 | if (r < 0) |
1725 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1726 | ||
1727 | link_ref(link); | |
1728 | ||
1729 | return r; | |
1730 | } | |
1731 | ||
34437b4f LP |
1732 | static int link_lldp_save(Link *link) { |
1733 | _cleanup_free_ char *temp_path = NULL; | |
1734 | _cleanup_fclose_ FILE *f = NULL; | |
1735 | sd_lldp_neighbor **l = NULL; | |
1736 | int n = 0, r, i; | |
49699bac SS |
1737 | |
1738 | assert(link); | |
34437b4f LP |
1739 | assert(link->lldp_file); |
1740 | ||
1741 | if (!link->lldp) { | |
1742 | (void) unlink(link->lldp_file); | |
1743 | return 0; | |
1744 | } | |
1745 | ||
1746 | r = sd_lldp_get_neighbors(link->lldp, &l); | |
1747 | if (r < 0) | |
1748 | goto finish; | |
1749 | if (r == 0) { | |
1750 | (void) unlink(link->lldp_file); | |
1751 | goto finish; | |
1752 | } | |
1753 | ||
1754 | n = r; | |
1755 | ||
1756 | r = fopen_temporary(link->lldp_file, &f, &temp_path); | |
1757 | if (r < 0) | |
1758 | goto finish; | |
1759 | ||
1760 | fchmod(fileno(f), 0644); | |
49699bac | 1761 | |
34437b4f LP |
1762 | for (i = 0; i < n; i++) { |
1763 | const void *p; | |
1764 | le64_t u; | |
1765 | size_t sz; | |
1766 | ||
1767 | r = sd_lldp_neighbor_get_raw(l[i], &p, &sz); | |
9ef61f2e | 1768 | if (r < 0) |
34437b4f LP |
1769 | goto finish; |
1770 | ||
1771 | u = htole64(sz); | |
1772 | (void) fwrite(&u, 1, sizeof(u), f); | |
1773 | (void) fwrite(p, 1, sz, f); | |
1774 | } | |
49699bac | 1775 | |
34437b4f LP |
1776 | r = fflush_and_check(f); |
1777 | if (r < 0) | |
1778 | goto finish; | |
1779 | ||
1780 | if (rename(temp_path, link->lldp_file) < 0) { | |
1781 | r = -errno; | |
1782 | goto finish; | |
9ef61f2e | 1783 | } |
34437b4f LP |
1784 | |
1785 | finish: | |
1786 | if (r < 0) { | |
1787 | (void) unlink(link->lldp_file); | |
1788 | if (temp_path) | |
1789 | (void) unlink(temp_path); | |
1790 | ||
1791 | log_link_error_errno(link, r, "Failed to save LLDP data to %s: %m", link->lldp_file); | |
1792 | } | |
1793 | ||
1794 | if (l) { | |
1795 | for (i = 0; i < n; i++) | |
1796 | sd_lldp_neighbor_unref(l[i]); | |
1797 | free(l); | |
1798 | } | |
1799 | ||
1800 | return r; | |
1801 | } | |
1802 | ||
90dffb22 | 1803 | static void lldp_handler(sd_lldp *lldp, sd_lldp_event event, sd_lldp_neighbor *n, void *userdata) { |
34437b4f | 1804 | Link *link = userdata; |
90dffb22 | 1805 | int r; |
34437b4f LP |
1806 | |
1807 | assert(link); | |
1808 | ||
1809 | (void) link_lldp_save(link); | |
90dffb22 | 1810 | |
7272b25e | 1811 | if (link_lldp_emit_enabled(link) && event == SD_LLDP_EVENT_ADDED) { |
90dffb22 LP |
1812 | /* If we received information about a new neighbor, restart the LLDP "fast" logic */ |
1813 | ||
1814 | log_link_debug(link, "Received LLDP datagram from previously unknown neighbor, restarting 'fast' LLDP transmission."); | |
1815 | ||
7272b25e | 1816 | r = link_lldp_emit_start(link); |
90dffb22 LP |
1817 | if (r < 0) |
1818 | log_link_warning_errno(link, r, "Failed to restart LLDP transmission: %m"); | |
1819 | } | |
49699bac SS |
1820 | } |
1821 | ||
e7ab854c TG |
1822 | static int link_acquire_ipv6_conf(Link *link) { |
1823 | int r; | |
1824 | ||
1825 | assert(link); | |
1826 | ||
e7ab854c | 1827 | if (link_ipv6_accept_ra_enabled(link)) { |
1e7a0e21 | 1828 | assert(link->ndisc); |
e7ab854c TG |
1829 | |
1830 | log_link_debug(link, "Discovering IPv6 routers"); | |
1831 | ||
1e7a0e21 | 1832 | r = sd_ndisc_start(link->ndisc); |
63348d13 | 1833 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1834 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
1835 | } | |
1836 | ||
7465dd22 PF |
1837 | if (link_radv_enabled(link)) { |
1838 | assert(link->radv); | |
1839 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); | |
1840 | ||
1841 | log_link_debug(link, "Starting IPv6 Router Advertisements"); | |
1842 | ||
1843 | r = sd_radv_start(link->radv); | |
1844 | if (r < 0 && r != -EBUSY) | |
1845 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Advertisement: %m"); | |
1846 | } | |
1847 | ||
10752343 PF |
1848 | (void) dhcp6_request_prefix_delegation(link); |
1849 | ||
e7ab854c TG |
1850 | return 0; |
1851 | } | |
1852 | ||
6fc25497 | 1853 | static int link_acquire_ipv4_conf(Link *link) { |
ff254138 TG |
1854 | int r; |
1855 | ||
1856 | assert(link); | |
ff254138 TG |
1857 | assert(link->manager); |
1858 | assert(link->manager->event); | |
1859 | ||
78c958f8 | 1860 | if (link_ipv4ll_enabled(link)) { |
eb34d4af | 1861 | assert(link->ipv4ll); |
ff254138 | 1862 | |
6a7a4e4d | 1863 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1864 | |
1865 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1866 | if (r < 0) |
1867 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1868 | } |
1869 | ||
78c958f8 | 1870 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1871 | assert(link->dhcp_client); |
ff254138 | 1872 | |
6a7a4e4d | 1873 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1874 | |
5c1d3fc9 | 1875 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1876 | if (r < 0) |
1877 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1878 | } |
ff254138 | 1879 | |
6fc25497 SS |
1880 | return 0; |
1881 | } | |
1882 | ||
1883 | static int link_acquire_conf(Link *link) { | |
1884 | int r; | |
1885 | ||
1886 | assert(link); | |
1887 | ||
1888 | r = link_acquire_ipv4_conf(link); | |
1889 | if (r < 0) | |
1890 | return r; | |
1891 | ||
3f7cc080 | 1892 | if (!in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) { |
6fc25497 SS |
1893 | r = link_acquire_ipv6_conf(link); |
1894 | if (r < 0) | |
1895 | return r; | |
1896 | } | |
1897 | ||
7272b25e LP |
1898 | if (link_lldp_emit_enabled(link)) { |
1899 | r = link_lldp_emit_start(link); | |
8e1ad1ea LP |
1900 | if (r < 0) |
1901 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
1902 | } | |
1903 | ||
ff254138 TG |
1904 | return 0; |
1905 | } | |
1906 | ||
a61bb41c | 1907 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1908 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1909 | ||
a61bb41c | 1910 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1911 | return true; |
1912 | ||
a61bb41c | 1913 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1914 | /* operstate may not be implemented, so fall back to flags */ |
a61bb41c | 1915 | if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) |
deb2e523 TG |
1916 | return true; |
1917 | ||
1918 | return false; | |
1919 | } | |
1920 | ||
0e2fdb83 SS |
1921 | static int link_address_genmode_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1922 | int r; | |
1923 | ||
1924 | assert(link); | |
1925 | ||
1926 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1927 | return 1; | |
1928 | ||
1929 | r = sd_netlink_message_get_errno(m); | |
1930 | if (r < 0) | |
1931 | log_link_warning_errno(link, r, "Could not set address genmode for interface: %m"); | |
1932 | ||
1933 | return 1; | |
1934 | } | |
1935 | ||
1936 | static int link_configure_addrgen_mode(Link *link) { | |
1937 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1938 | uint8_t ipv6ll_mode; | |
1939 | int r; | |
1940 | ||
1941 | assert(link); | |
1942 | assert(link->network); | |
1943 | assert(link->manager); | |
1944 | assert(link->manager->rtnl); | |
1945 | ||
1946 | log_link_debug(link, "Setting address genmode for link"); | |
1947 | ||
1948 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1949 | if (r < 0) | |
1950 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1951 | ||
1952 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); | |
1953 | if (r < 0) | |
1954 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
1955 | ||
1956 | r = sd_netlink_message_open_container(req, AF_INET6); | |
1957 | if (r < 0) | |
1958 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
1959 | ||
1960 | if (!link_ipv6ll_enabled(link)) | |
1961 | ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE; | |
826a3602 | 1962 | else if (sysctl_read_ip_property(AF_INET6, link->ifname, "stable_secret", NULL) < 0) |
0e2fdb83 | 1963 | /* The file may not exist. And event if it exists, when stable_secret is unset, |
826a3602 YW |
1964 | * reading the file fails with EIO. */ |
1965 | ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64; | |
1966 | else | |
1967 | ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
0e2fdb83 SS |
1968 | |
1969 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); | |
1970 | if (r < 0) | |
1971 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
1972 | ||
1973 | r = sd_netlink_message_close_container(req); | |
1974 | if (r < 0) | |
1975 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); | |
1976 | ||
1977 | r = sd_netlink_message_close_container(req); | |
1978 | if (r < 0) | |
1979 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
1980 | ||
1981 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_address_genmode_handler, | |
1982 | link_netlink_destroy_callback, link); | |
1983 | if (r < 0) | |
1984 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1985 | ||
1986 | link_ref(link); | |
1987 | ||
1988 | return 0; | |
1989 | } | |
1990 | ||
302a796f | 1991 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
dd3efc09 TG |
1992 | int r; |
1993 | ||
1746cf2a TG |
1994 | assert(link); |
1995 | ||
5da8149f | 1996 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1997 | return 1; |
1998 | ||
1c4baffc | 1999 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d | 2000 | if (r < 0) |
26d6b214 | 2001 | /* we warn but don't fail the link, as it may be brought up later */ |
a2fae7bb | 2002 | log_link_warning_errno(link, r, "Could not bring up interface: %m"); |
45ad2c13 | 2003 | |
f882c247 TG |
2004 | return 1; |
2005 | } | |
2006 | ||
1cc84f3b | 2007 | static int link_up(Link *link) { |
4afd3348 | 2008 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
f579559b TG |
2009 | int r; |
2010 | ||
f882c247 | 2011 | assert(link); |
c106cc36 | 2012 | assert(link->network); |
f882c247 TG |
2013 | assert(link->manager); |
2014 | assert(link->manager->rtnl); | |
2015 | ||
6a7a4e4d | 2016 | log_link_debug(link, "Bringing link up"); |
449f7554 | 2017 | |
6a7a4e4d LP |
2018 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
2019 | if (r < 0) | |
2020 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 2021 | |
2b2d8603 | 2022 | /* set it free if not enslaved with networkd */ |
6cb955c6 | 2023 | if (!link->network->bridge && !link->network->bond && !link->network->vrf) { |
2b2d8603 TY |
2024 | r = sd_netlink_message_append_u32(req, IFLA_MASTER, 0); |
2025 | if (r < 0) | |
2026 | return log_link_error_errno(link, r, "Could not append IFLA_MASTER attribute: %m"); | |
2027 | } | |
2028 | ||
5d4795f3 | 2029 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
2030 | if (r < 0) |
2031 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 2032 | |
c106cc36 | 2033 | if (link->network->mac) { |
1c4baffc | 2034 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
2035 | if (r < 0) |
2036 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
2037 | } |
2038 | ||
439689c6 | 2039 | if (link_ipv6_enabled(link)) { |
0e2fdb83 SS |
2040 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); |
2041 | if (r < 0) | |
2042 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
2043 | ||
01d28f81 | 2044 | /* if the kernel lacks ipv6 support setting IFF_UP fails if any ipv6 options are passed */ |
1c4baffc | 2045 | r = sd_netlink_message_open_container(req, AF_INET6); |
01d28f81 TG |
2046 | if (r < 0) |
2047 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
d0d6a4cd | 2048 | |
01d28f81 | 2049 | if (!in_addr_is_null(AF_INET6, &link->network->ipv6_token)) { |
1c4baffc | 2050 | r = sd_netlink_message_append_in6_addr(req, IFLA_INET6_TOKEN, &link->network->ipv6_token.in6); |
01d28f81 TG |
2051 | if (r < 0) |
2052 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_TOKEN: %m"); | |
2053 | } | |
2054 | ||
1c4baffc | 2055 | r = sd_netlink_message_close_container(req); |
6a7a4e4d | 2056 | if (r < 0) |
01d28f81 | 2057 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); |
d0d6a4cd | 2058 | |
0e2fdb83 SS |
2059 | r = sd_netlink_message_close_container(req); |
2060 | if (r < 0) | |
2061 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
2062 | } | |
d0d6a4cd | 2063 | |
302a796f YW |
2064 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_up_handler, |
2065 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
2066 | if (r < 0) |
2067 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 2068 | |
b226d99b TG |
2069 | link_ref(link); |
2070 | ||
f882c247 TG |
2071 | return 0; |
2072 | } | |
2073 | ||
bd5038f8 MKB |
2074 | static int link_up_can(Link *link) { |
2075 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
2076 | int r; | |
2077 | ||
2078 | assert(link); | |
2079 | ||
2080 | log_link_debug(link, "Bringing CAN link up"); | |
2081 | ||
2082 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
2083 | if (r < 0) | |
2084 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
2085 | ||
2086 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); | |
2087 | if (r < 0) | |
2088 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
2089 | ||
302a796f YW |
2090 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_up_handler, |
2091 | link_netlink_destroy_callback, link); | |
bd5038f8 MKB |
2092 | if (r < 0) |
2093 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
2094 | ||
2095 | link_ref(link); | |
2096 | ||
2097 | return 0; | |
2098 | } | |
2099 | ||
06828bb6 HP |
2100 | static int link_set_can(Link *link) { |
2101 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; | |
2102 | int r; | |
2103 | ||
2104 | assert(link); | |
2105 | assert(link->network); | |
2106 | assert(link->manager); | |
2107 | assert(link->manager->rtnl); | |
2108 | ||
2109 | log_link_debug(link, "link_set_can"); | |
2110 | ||
2111 | r = sd_rtnl_message_new_link(link->manager->rtnl, &m, RTM_NEWLINK, link->ifindex); | |
2112 | if (r < 0) | |
2113 | return log_link_error_errno(link, r, "Failed to allocate netlink message: %m"); | |
2114 | ||
2115 | r = sd_netlink_message_set_flags(m, NLM_F_REQUEST | NLM_F_ACK); | |
2116 | if (r < 0) | |
2117 | return log_link_error_errno(link, r, "Could not set netlink flags: %m"); | |
2118 | ||
2119 | r = sd_netlink_message_open_container(m, IFLA_LINKINFO); | |
2120 | if (r < 0) | |
2121 | return log_link_error_errno(link, r, "Failed to open netlink container: %m"); | |
2122 | ||
2123 | r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, link->kind); | |
2124 | if (r < 0) | |
2125 | return log_link_error_errno(link, r, "Could not append IFLA_INFO_DATA attribute: %m"); | |
2126 | ||
2127 | if (link->network->can_bitrate > 0 || link->network->can_sample_point > 0) { | |
2128 | struct can_bittiming bt = { | |
2129 | .bitrate = link->network->can_bitrate, | |
2130 | .sample_point = link->network->can_sample_point, | |
2131 | }; | |
2132 | ||
2133 | if (link->network->can_bitrate > UINT32_MAX) { | |
2134 | log_link_error(link, "bitrate (%zu) too big.", link->network->can_bitrate); | |
2135 | return -ERANGE; | |
2136 | } | |
2137 | ||
2138 | log_link_debug(link, "Setting bitrate = %d bit/s", bt.bitrate); | |
2139 | if (link->network->can_sample_point > 0) | |
2140 | log_link_debug(link, "Setting sample point = %d.%d%%", bt.sample_point / 10, bt.sample_point % 10); | |
2141 | else | |
2142 | log_link_debug(link, "Using default sample point"); | |
2143 | ||
2144 | r = sd_netlink_message_append_data(m, IFLA_CAN_BITTIMING, &bt, sizeof(bt)); | |
2145 | if (r < 0) | |
2146 | return log_link_error_errno(link, r, "Could not append IFLA_CAN_BITTIMING attribute: %m"); | |
2147 | } | |
2148 | ||
2149 | if (link->network->can_restart_us > 0) { | |
2150 | char time_string[FORMAT_TIMESPAN_MAX]; | |
2151 | uint64_t restart_ms; | |
2152 | ||
2153 | if (link->network->can_restart_us == USEC_INFINITY) | |
2154 | restart_ms = 0; | |
2155 | else | |
2156 | restart_ms = DIV_ROUND_UP(link->network->can_restart_us, USEC_PER_MSEC); | |
2157 | ||
2158 | format_timespan(time_string, FORMAT_TIMESPAN_MAX, restart_ms * 1000, MSEC_PER_SEC); | |
2159 | ||
2160 | if (restart_ms > UINT32_MAX) { | |
2161 | log_link_error(link, "restart timeout (%s) too big.", time_string); | |
2162 | return -ERANGE; | |
2163 | } | |
2164 | ||
2165 | log_link_debug(link, "Setting restart = %s", time_string); | |
2166 | ||
2167 | r = sd_netlink_message_append_u32(m, IFLA_CAN_RESTART_MS, restart_ms); | |
2168 | if (r < 0) | |
2169 | return log_link_error_errno(link, r, "Could not append IFLA_CAN_RESTART_MS attribute: %m"); | |
2170 | } | |
2171 | ||
c423be28 CG |
2172 | if (link->network->can_triple_sampling >= 0) { |
2173 | struct can_ctrlmode cm = { | |
2174 | .mask = CAN_CTRLMODE_3_SAMPLES, | |
2175 | .flags = link->network->can_triple_sampling ? CAN_CTRLMODE_3_SAMPLES : 0, | |
2176 | }; | |
2177 | ||
2178 | log_link_debug(link, "%sabling triple-sampling", link->network->can_triple_sampling ? "En" : "Dis"); | |
2179 | ||
2180 | r = sd_netlink_message_append_data(m, IFLA_CAN_CTRLMODE, &cm, sizeof(cm)); | |
2181 | if (r < 0) | |
2182 | return log_link_error_errno(link, r, "Could not append IFLA_CAN_CTRLMODE attribute: %m"); | |
2183 | } | |
2184 | ||
06828bb6 HP |
2185 | r = sd_netlink_message_close_container(m); |
2186 | if (r < 0) | |
2187 | return log_link_error_errno(link, r, "Failed to close netlink container: %m"); | |
2188 | ||
2189 | r = sd_netlink_message_close_container(m); | |
2190 | if (r < 0) | |
2191 | return log_link_error_errno(link, r, "Failed to close netlink container: %m"); | |
2192 | ||
302a796f YW |
2193 | r = netlink_call_async(link->manager->rtnl, NULL, m, link_set_handler, |
2194 | link_netlink_destroy_callback, link); | |
06828bb6 HP |
2195 | if (r < 0) |
2196 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
2197 | ||
2198 | link_ref(link); | |
2199 | ||
2200 | if (!(link->flags & IFF_UP)) { | |
2201 | r = link_up_can(link); | |
2202 | if (r < 0) { | |
2203 | link_enter_failed(link); | |
2204 | return r; | |
2205 | } | |
2206 | } | |
2207 | ||
2208 | log_link_debug(link, "link_set_can done"); | |
2209 | ||
2210 | return r; | |
2211 | } | |
2212 | ||
302a796f | 2213 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
0d4ad91d AR |
2214 | int r; |
2215 | ||
2216 | assert(link); | |
2217 | ||
2218 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
2219 | return 1; | |
2220 | ||
1c4baffc | 2221 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 2222 | if (r < 0) |
a2fae7bb | 2223 | log_link_warning_errno(link, r, "Could not bring down interface: %m"); |
0d4ad91d | 2224 | |
1046bf9b | 2225 | if (streq_ptr(link->kind, "can")) |
06828bb6 | 2226 | link_set_can(link); |
06828bb6 | 2227 | |
0d4ad91d AR |
2228 | return 1; |
2229 | } | |
2230 | ||
14b6bb77 | 2231 | int link_down(Link *link) { |
4afd3348 | 2232 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
0d4ad91d AR |
2233 | int r; |
2234 | ||
2235 | assert(link); | |
2236 | assert(link->manager); | |
2237 | assert(link->manager->rtnl); | |
2238 | ||
6a7a4e4d | 2239 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
2240 | |
2241 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
2242 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
2243 | if (r < 0) |
2244 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
2245 | |
2246 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
2247 | if (r < 0) |
2248 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 2249 | |
302a796f YW |
2250 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_down_handler, |
2251 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
2252 | if (r < 0) |
2253 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
2254 | |
2255 | link_ref(link); | |
2256 | ||
2257 | return 0; | |
2258 | } | |
2259 | ||
2260 | static int link_handle_bound_to_list(Link *link) { | |
2261 | Link *l; | |
2262 | Iterator i; | |
2263 | int r; | |
2264 | bool required_up = false; | |
2265 | bool link_is_up = false; | |
2266 | ||
2267 | assert(link); | |
2268 | ||
2269 | if (hashmap_isempty(link->bound_to_links)) | |
2270 | return 0; | |
2271 | ||
2272 | if (link->flags & IFF_UP) | |
2273 | link_is_up = true; | |
2274 | ||
2275 | HASHMAP_FOREACH (l, link->bound_to_links, i) | |
2276 | if (link_has_carrier(l)) { | |
2277 | required_up = true; | |
2278 | break; | |
2279 | } | |
2280 | ||
2281 | if (!required_up && link_is_up) { | |
2282 | r = link_down(link); | |
2283 | if (r < 0) | |
2284 | return r; | |
2285 | } else if (required_up && !link_is_up) { | |
2286 | r = link_up(link); | |
2287 | if (r < 0) | |
2288 | return r; | |
2289 | } | |
2290 | ||
2291 | return 0; | |
2292 | } | |
2293 | ||
2294 | static int link_handle_bound_by_list(Link *link) { | |
2295 | Iterator i; | |
2296 | Link *l; | |
2297 | int r; | |
2298 | ||
2299 | assert(link); | |
2300 | ||
2301 | if (hashmap_isempty(link->bound_by_links)) | |
2302 | return 0; | |
2303 | ||
2304 | HASHMAP_FOREACH (l, link->bound_by_links, i) { | |
2305 | r = link_handle_bound_to_list(l); | |
2306 | if (r < 0) | |
2307 | return r; | |
2308 | } | |
2309 | ||
2310 | return 0; | |
2311 | } | |
2312 | ||
2313 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
2314 | int r; | |
2315 | ||
2316 | assert(link); | |
2317 | assert(carrier); | |
2318 | ||
2319 | if (link == carrier) | |
2320 | return 0; | |
2321 | ||
2322 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
2323 | return 0; | |
2324 | ||
2325 | r = hashmap_ensure_allocated(h, NULL); | |
2326 | if (r < 0) | |
2327 | return r; | |
2328 | ||
2329 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
2330 | if (r < 0) | |
2331 | return r; | |
2332 | ||
2333 | return 0; | |
2334 | } | |
2335 | ||
2336 | static int link_new_bound_by_list(Link *link) { | |
2337 | Manager *m; | |
2338 | Link *carrier; | |
2339 | Iterator i; | |
2340 | int r; | |
2341 | bool list_updated = false; | |
2342 | ||
2343 | assert(link); | |
2344 | assert(link->manager); | |
2345 | ||
2346 | m = link->manager; | |
2347 | ||
b295beea | 2348 | HASHMAP_FOREACH(carrier, m->links, i) { |
0d4ad91d AR |
2349 | if (!carrier->network) |
2350 | continue; | |
2351 | ||
2352 | if (strv_isempty(carrier->network->bind_carrier)) | |
2353 | continue; | |
2354 | ||
2355 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname, 0)) { | |
2356 | r = link_put_carrier(link, carrier, &link->bound_by_links); | |
2357 | if (r < 0) | |
2358 | return r; | |
2359 | ||
2360 | list_updated = true; | |
2361 | } | |
2362 | } | |
2363 | ||
2364 | if (list_updated) | |
84de38c5 | 2365 | link_dirty(link); |
0d4ad91d | 2366 | |
b295beea | 2367 | HASHMAP_FOREACH(carrier, link->bound_by_links, i) { |
0d4ad91d AR |
2368 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
2369 | if (r < 0) | |
2370 | return r; | |
2371 | ||
84de38c5 | 2372 | link_dirty(carrier); |
0d4ad91d AR |
2373 | } |
2374 | ||
2375 | return 0; | |
2376 | } | |
2377 | ||
2378 | static int link_new_bound_to_list(Link *link) { | |
2379 | Manager *m; | |
2380 | Link *carrier; | |
2381 | Iterator i; | |
2382 | int r; | |
2383 | bool list_updated = false; | |
2384 | ||
2385 | assert(link); | |
2386 | assert(link->manager); | |
2387 | ||
2388 | if (!link->network) | |
2389 | return 0; | |
2390 | ||
2391 | if (strv_isempty(link->network->bind_carrier)) | |
2392 | return 0; | |
2393 | ||
2394 | m = link->manager; | |
2395 | ||
2396 | HASHMAP_FOREACH (carrier, m->links, i) { | |
2397 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname, 0)) { | |
2398 | r = link_put_carrier(link, carrier, &link->bound_to_links); | |
2399 | if (r < 0) | |
2400 | return r; | |
2401 | ||
2402 | list_updated = true; | |
2403 | } | |
2404 | } | |
2405 | ||
2406 | if (list_updated) | |
84de38c5 | 2407 | link_dirty(link); |
0d4ad91d AR |
2408 | |
2409 | HASHMAP_FOREACH (carrier, link->bound_to_links, i) { | |
2410 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); | |
2411 | if (r < 0) | |
2412 | return r; | |
2413 | ||
84de38c5 | 2414 | link_dirty(carrier); |
0d4ad91d AR |
2415 | } |
2416 | ||
2417 | return 0; | |
2418 | } | |
2419 | ||
2420 | static int link_new_carrier_maps(Link *link) { | |
2421 | int r; | |
2422 | ||
2423 | r = link_new_bound_by_list(link); | |
2424 | if (r < 0) | |
2425 | return r; | |
2426 | ||
2427 | r = link_handle_bound_by_list(link); | |
2428 | if (r < 0) | |
2429 | return r; | |
2430 | ||
2431 | r = link_new_bound_to_list(link); | |
2432 | if (r < 0) | |
2433 | return r; | |
2434 | ||
2435 | r = link_handle_bound_to_list(link); | |
2436 | if (r < 0) | |
2437 | return r; | |
2438 | ||
2439 | return 0; | |
2440 | } | |
2441 | ||
2442 | static void link_free_bound_to_list(Link *link) { | |
2443 | Link *bound_to; | |
2444 | Iterator i; | |
2445 | ||
2446 | HASHMAP_FOREACH (bound_to, link->bound_to_links, i) { | |
2447 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); | |
2448 | ||
2449 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 2450 | link_dirty(bound_to); |
0d4ad91d AR |
2451 | } |
2452 | ||
2453 | return; | |
2454 | } | |
2455 | ||
2456 | static void link_free_bound_by_list(Link *link) { | |
2457 | Link *bound_by; | |
2458 | Iterator i; | |
2459 | ||
2460 | HASHMAP_FOREACH (bound_by, link->bound_by_links, i) { | |
2461 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); | |
2462 | ||
2463 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 2464 | link_dirty(bound_by); |
0d4ad91d AR |
2465 | link_handle_bound_to_list(bound_by); |
2466 | } | |
2467 | } | |
2468 | ||
2469 | return; | |
2470 | } | |
2471 | ||
2472 | static void link_free_carrier_maps(Link *link) { | |
2473 | bool list_updated = false; | |
2474 | ||
2475 | assert(link); | |
2476 | ||
2477 | if (!hashmap_isempty(link->bound_to_links)) { | |
2478 | link_free_bound_to_list(link); | |
2479 | list_updated = true; | |
2480 | } | |
2481 | ||
2482 | if (!hashmap_isempty(link->bound_by_links)) { | |
2483 | link_free_bound_by_list(link); | |
2484 | list_updated = true; | |
2485 | } | |
2486 | ||
2487 | if (list_updated) | |
84de38c5 | 2488 | link_dirty(link); |
0d4ad91d AR |
2489 | |
2490 | return; | |
2491 | } | |
2492 | ||
5f707e12 YW |
2493 | static int link_append_to_master(Link *link, NetDev *netdev) { |
2494 | Link *master; | |
2495 | int r; | |
2496 | ||
2497 | assert(link); | |
2498 | assert(netdev); | |
2499 | ||
2500 | r = link_get(link->manager, netdev->ifindex, &master); | |
2501 | if (r < 0) | |
2502 | return r; | |
2503 | ||
2504 | r = set_ensure_allocated(&master->slaves, NULL); | |
2505 | if (r < 0) | |
2506 | return r; | |
2507 | ||
2508 | r = set_put(master->slaves, link); | |
2509 | if (r < 0) | |
2510 | return r; | |
2511 | ||
2512 | link_ref(link); | |
2513 | return 0; | |
2514 | } | |
2515 | ||
2516 | static void link_drop_from_master(Link *link, NetDev *netdev) { | |
2517 | Link *master; | |
2518 | ||
2519 | assert(link); | |
2520 | ||
2521 | if (!link->manager || !netdev) | |
2522 | return; | |
2523 | ||
2524 | if (link_get(link->manager, netdev->ifindex, &master) < 0) | |
2525 | return; | |
2526 | ||
2527 | link_unref(set_remove(master->slaves, link)); | |
2528 | } | |
2529 | ||
2530 | static void link_detach_from_manager(Link *link) { | |
2531 | if (!link || !link->manager) | |
2532 | return; | |
2533 | ||
2534 | link_unref(set_remove(link->manager->links_requesting_uuid, link)); | |
2535 | link_clean(link); | |
2536 | ||
2537 | /* The following must be called at last. */ | |
2538 | assert_se(hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)) == link); | |
2539 | link_unref(link); | |
2540 | } | |
2541 | ||
0d4ad91d AR |
2542 | void link_drop(Link *link) { |
2543 | if (!link || link->state == LINK_STATE_LINGER) | |
2544 | return; | |
2545 | ||
2546 | link_set_state(link, LINK_STATE_LINGER); | |
2547 | ||
2548 | link_free_carrier_maps(link); | |
2549 | ||
5f707e12 YW |
2550 | if (link->network) { |
2551 | link_drop_from_master(link, link->network->bridge); | |
2552 | link_drop_from_master(link, link->network->bond); | |
2553 | } | |
2554 | ||
6a7a4e4d | 2555 | log_link_debug(link, "Link removed"); |
0d4ad91d | 2556 | |
db2f8a2e | 2557 | (void) unlink(link->state_file); |
c4397d94 | 2558 | link_detach_from_manager(link); |
0d4ad91d AR |
2559 | } |
2560 | ||
3f265037 | 2561 | static int link_joined(Link *link) { |
f882c247 TG |
2562 | int r; |
2563 | ||
ef1ba606 | 2564 | assert(link); |
f5be5601 | 2565 | assert(link->network); |
dd3efc09 | 2566 | |
0d4ad91d AR |
2567 | if (!hashmap_isempty(link->bound_to_links)) { |
2568 | r = link_handle_bound_to_list(link); | |
2569 | if (r < 0) | |
2570 | return r; | |
2571 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
2572 | r = link_up(link); |
2573 | if (r < 0) { | |
2574 | link_enter_failed(link); | |
2575 | return r; | |
2576 | } | |
ef1ba606 | 2577 | } |
f882c247 | 2578 | |
9ed794a3 | 2579 | if (link->network->bridge) { |
e1853b00 | 2580 | r = link_set_bridge(link); |
6a7a4e4d LP |
2581 | if (r < 0) |
2582 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
45e11abf YW |
2583 | |
2584 | r = link_append_to_master(link, link->network->bridge); | |
2585 | if (r < 0) | |
2586 | log_link_error_errno(link, r, "Failed to add to bridge master's slave list: %m"); | |
e1853b00 SS |
2587 | } |
2588 | ||
eb64b435 | 2589 | if (link->network->bond) { |
7fcee284 | 2590 | r = link_set_bond(link); |
eb64b435 SS |
2591 | if (r < 0) |
2592 | log_link_error_errno(link, r, "Could not set bond message: %m"); | |
959f65d3 | 2593 | |
45e11abf | 2594 | r = link_append_to_master(link, link->network->bond); |
959f65d3 YW |
2595 | if (r < 0) |
2596 | log_link_error_errno(link, r, "Failed to add to bond master's slave list: %m"); | |
eb64b435 SS |
2597 | } |
2598 | ||
ffff9abe TJ |
2599 | if (link->network->use_br_vlan && |
2600 | (link->network->bridge || streq_ptr("bridge", link->kind))) { | |
13b498f9 TJ |
2601 | r = link_set_bridge_vlan(link); |
2602 | if (r < 0) | |
2603 | log_link_error_errno(link, r, "Could not set bridge vlan: %m"); | |
2604 | } | |
2605 | ||
c1835a42 RM |
2606 | /* Skip setting up addresses until it gets carrier, |
2607 | or it would try to set addresses twice, | |
2608 | which is bad for non-idempotent steps. */ | |
dad2d78e | 2609 | if (!link_has_carrier(link) && !link->network->configure_without_carrier) |
c1835a42 RM |
2610 | return 0; |
2611 | ||
289e6774 | 2612 | return link_request_set_addresses(link); |
02b59d57 TG |
2613 | } |
2614 | ||
302a796f | 2615 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
02b59d57 TG |
2616 | int r; |
2617 | ||
1746cf2a | 2618 | assert(link); |
ef1ba606 | 2619 | assert(link->network); |
34bf3c00 YW |
2620 | assert(link->enslaving > 0); |
2621 | assert(!link->enslaved_raw); | |
02b59d57 | 2622 | |
313cefa1 | 2623 | link->enslaving--; |
52433f6b | 2624 | |
5da8149f | 2625 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
2626 | return 1; |
2627 | ||
1c4baffc | 2628 | r = sd_netlink_message_get_errno(m); |
856f962c | 2629 | if (r < 0 && r != -EEXIST) { |
a2fae7bb | 2630 | log_link_error_errno(link, r, "Could not join netdev: %m"); |
ef1ba606 TG |
2631 | link_enter_failed(link); |
2632 | return 1; | |
ba179154 | 2633 | } else |
6a7a4e4d | 2634 | log_link_debug(link, "Joined netdev"); |
02b59d57 | 2635 | |
34bf3c00 YW |
2636 | if (link->enslaving == 0) { |
2637 | link->enslaved_raw = true; | |
3f265037 | 2638 | link_joined(link); |
34bf3c00 | 2639 | } |
02b59d57 TG |
2640 | |
2641 | return 1; | |
2642 | } | |
2643 | ||
3f265037 | 2644 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 2645 | NetDev *netdev; |
672682a6 | 2646 | Iterator i; |
02b59d57 TG |
2647 | int r; |
2648 | ||
2649 | assert(link); | |
2650 | assert(link->network); | |
bd08ce56 | 2651 | assert(link->state == LINK_STATE_INITIALIZED); |
02b59d57 | 2652 | |
289e6774 | 2653 | link_set_state(link, LINK_STATE_CONFIGURING); |
02b59d57 | 2654 | |
84de38c5 | 2655 | link_dirty(link); |
34bf3c00 YW |
2656 | link->enslaving = 0; |
2657 | link->enslaved_raw = false; | |
02b59d57 | 2658 | |
d9c67ea1 | 2659 | if (link->network->bond) { |
cbff7170 TJ |
2660 | if (link->network->bond->state == NETDEV_STATE_READY && |
2661 | link->network->bond->ifindex == link->master_ifindex) | |
2662 | return link_joined(link); | |
2663 | ||
f2341e0a LP |
2664 | log_struct(LOG_DEBUG, |
2665 | LOG_LINK_INTERFACE(link), | |
2666 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 2667 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname)); |
f2341e0a | 2668 | |
34bf3c00 YW |
2669 | link->enslaving++; |
2670 | ||
f2341e0a | 2671 | r = netdev_join(link->network->bond, link, netdev_join_handler); |
52433f6b | 2672 | if (r < 0) { |
f2341e0a LP |
2673 | log_struct_errno(LOG_WARNING, r, |
2674 | LOG_LINK_INTERFACE(link), | |
2675 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 2676 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname)); |
52433f6b TG |
2677 | link_enter_failed(link); |
2678 | return r; | |
2679 | } | |
0ad6148e MO |
2680 | } |
2681 | ||
d9c67ea1 | 2682 | if (link->network->bridge) { |
f2341e0a LP |
2683 | log_struct(LOG_DEBUG, |
2684 | LOG_LINK_INTERFACE(link), | |
2685 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 2686 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname)); |
f2341e0a | 2687 | |
34bf3c00 YW |
2688 | link->enslaving++; |
2689 | ||
f2341e0a | 2690 | r = netdev_join(link->network->bridge, link, netdev_join_handler); |
0ad6148e | 2691 | if (r < 0) { |
f2341e0a LP |
2692 | log_struct_errno(LOG_WARNING, r, |
2693 | LOG_LINK_INTERFACE(link), | |
2694 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 2695 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname)); |
0ad6148e MO |
2696 | link_enter_failed(link); |
2697 | return r; | |
2698 | } | |
52433f6b TG |
2699 | } |
2700 | ||
6cb955c6 AR |
2701 | if (link->network->vrf) { |
2702 | log_struct(LOG_DEBUG, | |
2703 | LOG_LINK_INTERFACE(link), | |
2704 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 ZJS |
2705 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->vrf->ifname)); |
2706 | ||
34bf3c00 YW |
2707 | link->enslaving++; |
2708 | ||
6cb955c6 AR |
2709 | r = netdev_join(link->network->vrf, link, netdev_join_handler); |
2710 | if (r < 0) { | |
2711 | log_struct_errno(LOG_WARNING, r, | |
2712 | LOG_LINK_INTERFACE(link), | |
2713 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 | 2714 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->vrf->ifname)); |
6cb955c6 AR |
2715 | link_enter_failed(link); |
2716 | return r; | |
2717 | } | |
6cb955c6 AR |
2718 | } |
2719 | ||
6a0a2f86 | 2720 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs, i) { |
7951dea2 | 2721 | |
2b6db913 YW |
2722 | if (netdev->ifindex > 0) |
2723 | /* Assume already enslaved. */ | |
a63e5daa | 2724 | continue; |
a63e5daa | 2725 | |
7033af49 YW |
2726 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_STACKED) |
2727 | continue; | |
2728 | ||
f2341e0a LP |
2729 | log_struct(LOG_DEBUG, |
2730 | LOG_LINK_INTERFACE(link), | |
2731 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 2732 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); |
f2341e0a | 2733 | |
34bf3c00 YW |
2734 | link->enslaving++; |
2735 | ||
f2341e0a | 2736 | r = netdev_join(netdev, link, netdev_join_handler); |
7951dea2 | 2737 | if (r < 0) { |
f2341e0a LP |
2738 | log_struct_errno(LOG_WARNING, r, |
2739 | LOG_LINK_INTERFACE(link), | |
2740 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 2741 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); |
326cb406 SS |
2742 | link_enter_failed(link); |
2743 | return r; | |
2744 | } | |
326cb406 SS |
2745 | } |
2746 | ||
34bf3c00 YW |
2747 | if (link->enslaving == 0) |
2748 | return link_joined(link); | |
2749 | ||
ef1ba606 TG |
2750 | return 0; |
2751 | } | |
2752 | ||
769d324c | 2753 | static int link_set_ipv4_forward(Link *link) { |
5a8bcb67 LP |
2754 | int r; |
2755 | ||
765afd5c | 2756 | if (!link_ipv4_forward_enabled(link)) |
15dee3f0 LP |
2757 | return 0; |
2758 | ||
765afd5c LP |
2759 | /* We propagate the forwarding flag from one interface to the |
2760 | * global setting one way. This means: as long as at least one | |
2761 | * interface was configured at any time that had IP forwarding | |
2762 | * enabled the setting will stay on for good. We do this | |
2763 | * primarily to keep IPv4 and IPv6 packet forwarding behaviour | |
2764 | * somewhat in sync (see below). */ | |
15dee3f0 | 2765 | |
62e021a9 | 2766 | r = sysctl_write_ip_property(AF_INET, NULL, "ip_forward", "1"); |
eb3da901 | 2767 | if (r < 0) |
765afd5c | 2768 | log_link_warning_errno(link, r, "Cannot turn on IPv4 packet forwarding, ignoring: %m"); |
43c6d5ab | 2769 | |
769d324c LP |
2770 | return 0; |
2771 | } | |
2772 | ||
2773 | static int link_set_ipv6_forward(Link *link) { | |
769d324c LP |
2774 | int r; |
2775 | ||
765afd5c | 2776 | if (!link_ipv6_forward_enabled(link)) |
8add5f79 NO |
2777 | return 0; |
2778 | ||
61233823 | 2779 | /* On Linux, the IPv6 stack does not know a per-interface |
765afd5c LP |
2780 | * packet forwarding setting: either packet forwarding is on |
2781 | * for all, or off for all. We hence don't bother with a | |
2782 | * per-interface setting, but simply propagate the interface | |
2783 | * flag, if it is set, to the global flag, one-way. Note that | |
2784 | * while IPv4 would allow a per-interface flag, we expose the | |
2785 | * same behaviour there and also propagate the setting from | |
2786 | * one to all, to keep things simple (see above). */ | |
15dee3f0 | 2787 | |
62e021a9 | 2788 | r = sysctl_write_ip_property(AF_INET6, "all", "forwarding", "1"); |
eb3da901 | 2789 | if (r < 0) |
765afd5c | 2790 | log_link_warning_errno(link, r, "Cannot configure IPv6 packet forwarding, ignoring: %m"); |
5a8bcb67 LP |
2791 | |
2792 | return 0; | |
2793 | } | |
2794 | ||
49092e22 | 2795 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 | 2796 | IPv6PrivacyExtensions s; |
49092e22 SS |
2797 | int r; |
2798 | ||
1f0d9695 | 2799 | s = link_ipv6_privacy_extensions(link); |
66a6bd68 | 2800 | if (s < 0) |
49092e22 SS |
2801 | return 0; |
2802 | ||
62e021a9 | 2803 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "use_tempaddr", (int) link->network->ipv6_privacy_extensions); |
eb3da901 | 2804 | if (r < 0) |
49092e22 SS |
2805 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
2806 | ||
2807 | return 0; | |
2808 | } | |
2809 | ||
4f2e437a | 2810 | static int link_set_ipv6_accept_ra(Link *link) { |
4f2e437a SS |
2811 | int r; |
2812 | ||
2813 | /* Make this a NOP if IPv6 is not available */ | |
2814 | if (!socket_ipv6_is_supported()) | |
2815 | return 0; | |
2816 | ||
2817 | if (link->flags & IFF_LOOPBACK) | |
2818 | return 0; | |
2819 | ||
d68e2e59 LP |
2820 | if (!link->network) |
2821 | return 0; | |
2822 | ||
62e021a9 | 2823 | r = sysctl_write_ip_property(AF_INET6, link->ifname, "accept_ra", "0"); |
eb3da901 | 2824 | if (r < 0) |
fe307276 | 2825 | log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface: %m"); |
4f2e437a SS |
2826 | |
2827 | return 0; | |
2828 | } | |
2829 | ||
8749cbcd | 2830 | static int link_set_ipv6_dad_transmits(Link *link) { |
8749cbcd SS |
2831 | int r; |
2832 | ||
2833 | /* Make this a NOP if IPv6 is not available */ | |
2834 | if (!socket_ipv6_is_supported()) | |
2835 | return 0; | |
2836 | ||
2837 | if (link->flags & IFF_LOOPBACK) | |
2838 | return 0; | |
2839 | ||
d68e2e59 LP |
2840 | if (!link->network) |
2841 | return 0; | |
2842 | ||
8749cbcd SS |
2843 | if (link->network->ipv6_dad_transmits < 0) |
2844 | return 0; | |
2845 | ||
62e021a9 | 2846 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "dad_transmits", link->network->ipv6_dad_transmits); |
eb3da901 | 2847 | if (r < 0) |
8749cbcd | 2848 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); |
8749cbcd SS |
2849 | |
2850 | return 0; | |
2851 | } | |
2852 | ||
b69c3180 | 2853 | static int link_set_ipv6_hop_limit(Link *link) { |
b69c3180 SS |
2854 | int r; |
2855 | ||
2856 | /* Make this a NOP if IPv6 is not available */ | |
2857 | if (!socket_ipv6_is_supported()) | |
2858 | return 0; | |
2859 | ||
2860 | if (link->flags & IFF_LOOPBACK) | |
2861 | return 0; | |
2862 | ||
d68e2e59 LP |
2863 | if (!link->network) |
2864 | return 0; | |
2865 | ||
b69c3180 SS |
2866 | if (link->network->ipv6_hop_limit < 0) |
2867 | return 0; | |
2868 | ||
62e021a9 | 2869 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "hop_limit", link->network->ipv6_hop_limit); |
eb3da901 | 2870 | if (r < 0) |
b69c3180 | 2871 | log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m"); |
b69c3180 SS |
2872 | |
2873 | return 0; | |
2874 | } | |
2875 | ||
11102cba | 2876 | static int link_set_ipv6_mtu(Link *link) { |
11102cba SS |
2877 | int r; |
2878 | ||
2879 | /* Make this a NOP if IPv6 is not available */ | |
2880 | if (!socket_ipv6_is_supported()) | |
2881 | return 0; | |
2882 | ||
2883 | if (link->flags & IFF_LOOPBACK) | |
2884 | return 0; | |
2885 | ||
2886 | if (link->network->ipv6_mtu == 0) | |
2887 | return 0; | |
2888 | ||
62e021a9 | 2889 | r = sysctl_write_ip_property_uint32(AF_INET6, link->ifname, "mtu", link->network->ipv6_mtu); |
11102cba SS |
2890 | if (r < 0) |
2891 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface: %m"); | |
2892 | ||
2893 | return 0; | |
2894 | } | |
2895 | ||
30226d27 TJ |
2896 | static bool link_is_static_address_configured(Link *link, Address *address) { |
2897 | Address *net_address; | |
2898 | ||
2899 | assert(link); | |
2900 | assert(address); | |
2901 | ||
2902 | if (!link->network) | |
2903 | return false; | |
2904 | ||
2905 | LIST_FOREACH(addresses, net_address, link->network->static_addresses) | |
2906 | if (address_equal(net_address, address)) | |
2907 | return true; | |
2908 | ||
2909 | return false; | |
2910 | } | |
2911 | ||
7ecf0c3e TJ |
2912 | static bool link_is_static_route_configured(Link *link, Route *route) { |
2913 | Route *net_route; | |
2914 | ||
2915 | assert(link); | |
2916 | assert(route); | |
2917 | ||
2918 | if (!link->network) | |
2919 | return false; | |
2920 | ||
2921 | LIST_FOREACH(routes, net_route, link->network->static_routes) | |
2922 | if (route_equal(net_route, route)) | |
2923 | return true; | |
2924 | ||
2925 | return false; | |
2926 | } | |
2927 | ||
5e5b137a TG |
2928 | static int link_drop_foreign_config(Link *link) { |
2929 | Address *address; | |
2930 | Route *route; | |
2931 | Iterator i; | |
2932 | int r; | |
2933 | ||
2934 | SET_FOREACH(address, link->addresses_foreign, i) { | |
fe307276 | 2935 | /* we consider IPv6LL addresses to be managed by the kernel */ |
5e5b137a TG |
2936 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1) |
2937 | continue; | |
2938 | ||
30226d27 TJ |
2939 | if (link_is_static_address_configured(link, address)) { |
2940 | r = address_add(link, address->family, &address->in_addr, address->prefixlen, NULL); | |
2941 | if (r < 0) | |
2942 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
2943 | } else { | |
63ae0569 | 2944 | r = address_remove(address, link, NULL); |
30226d27 TJ |
2945 | if (r < 0) |
2946 | return r; | |
2947 | } | |
5e5b137a TG |
2948 | } |
2949 | ||
2950 | SET_FOREACH(route, link->routes_foreign, i) { | |
fe307276 | 2951 | /* do not touch routes managed by the kernel */ |
5e5b137a TG |
2952 | if (route->protocol == RTPROT_KERNEL) |
2953 | continue; | |
2954 | ||
7ecf0c3e TJ |
2955 | if (link_is_static_route_configured(link, route)) { |
2956 | r = route_add(link, route->family, &route->dst, route->dst_prefixlen, route->tos, route->priority, route->table, NULL); | |
2957 | if (r < 0) | |
2958 | return r; | |
2959 | } else { | |
4645ad47 | 2960 | r = route_remove(route, link, NULL); |
7ecf0c3e TJ |
2961 | if (r < 0) |
2962 | return r; | |
2963 | } | |
5e5b137a TG |
2964 | } |
2965 | ||
2966 | return 0; | |
2967 | } | |
2968 | ||
3104883d | 2969 | static int link_drop_config(Link *link) { |
410a7f15 | 2970 | Address *address, *pool_address; |
3104883d SS |
2971 | Route *route; |
2972 | Iterator i; | |
2973 | int r; | |
2974 | ||
2975 | SET_FOREACH(address, link->addresses, i) { | |
2976 | /* we consider IPv6LL addresses to be managed by the kernel */ | |
2977 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1) | |
2978 | continue; | |
2979 | ||
63ae0569 | 2980 | r = address_remove(address, link, NULL); |
3104883d SS |
2981 | if (r < 0) |
2982 | return r; | |
410a7f15 RM |
2983 | |
2984 | /* If this address came from an address pool, clean up the pool */ | |
2985 | LIST_FOREACH(addresses, pool_address, link->pool_addresses) { | |
2986 | if (address_equal(address, pool_address)) { | |
2987 | LIST_REMOVE(addresses, link->pool_addresses, pool_address); | |
2988 | address_free(pool_address); | |
2989 | break; | |
2990 | } | |
2991 | } | |
3104883d SS |
2992 | } |
2993 | ||
2994 | SET_FOREACH(route, link->routes, i) { | |
2995 | /* do not touch routes managed by the kernel */ | |
2996 | if (route->protocol == RTPROT_KERNEL) | |
2997 | continue; | |
2998 | ||
4645ad47 | 2999 | r = route_remove(route, link, NULL); |
3104883d SS |
3000 | if (r < 0) |
3001 | return r; | |
3002 | } | |
3003 | ||
c69305ff LP |
3004 | ndisc_flush(link); |
3005 | ||
3104883d SS |
3006 | return 0; |
3007 | } | |
3008 | ||
273eec24 LP |
3009 | static int link_update_lldp(Link *link) { |
3010 | int r; | |
3011 | ||
3012 | assert(link); | |
3013 | ||
3014 | if (!link->lldp) | |
3015 | return 0; | |
3016 | ||
3017 | if (link->flags & IFF_UP) { | |
3018 | r = sd_lldp_start(link->lldp); | |
3019 | if (r > 0) | |
3020 | log_link_debug(link, "Started LLDP."); | |
3021 | } else { | |
3022 | r = sd_lldp_stop(link->lldp); | |
3023 | if (r > 0) | |
3024 | log_link_debug(link, "Stopped LLDP."); | |
3025 | } | |
3026 | ||
3027 | return r; | |
3028 | } | |
3029 | ||
93ea7750 MKB |
3030 | static int link_configure_can(Link *link) { |
3031 | int r; | |
3032 | ||
06828bb6 HP |
3033 | if (streq_ptr(link->kind, "can")) { |
3034 | /* The CAN interface must be down to configure bitrate, etc... */ | |
3035 | if ((link->flags & IFF_UP)) { | |
3036 | r = link_down(link); | |
3037 | if (r < 0) { | |
3038 | link_enter_failed(link); | |
3039 | return r; | |
3040 | } | |
3041 | ||
3042 | return 0; | |
3043 | } | |
3044 | ||
3045 | return link_set_can(link); | |
3046 | } | |
3047 | ||
93ea7750 MKB |
3048 | if (!(link->flags & IFF_UP)) { |
3049 | r = link_up_can(link); | |
3050 | if (r < 0) { | |
3051 | link_enter_failed(link); | |
3052 | return r; | |
3053 | } | |
3054 | } | |
3055 | ||
3056 | return 0; | |
3057 | } | |
3058 | ||
a748b692 | 3059 | static int link_configure(Link *link) { |
02b59d57 TG |
3060 | int r; |
3061 | ||
ef1ba606 | 3062 | assert(link); |
b22d8a00 | 3063 | assert(link->network); |
bd08ce56 | 3064 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 3065 | |
06828bb6 | 3066 | if (STRPTR_IN_SET(link->kind, "can", "vcan")) |
93ea7750 | 3067 | return link_configure_can(link); |
92c918b0 | 3068 | |
02e28621 ДГ |
3069 | /* Drop foreign config, but ignore loopback or critical devices. |
3070 | * We do not want to remove loopback address or addresses used for root NFS. */ | |
3071 | if (!(link->flags & IFF_LOOPBACK) && !(link->network->dhcp_critical)) { | |
e5d44b34 CH |
3072 | r = link_drop_foreign_config(link); |
3073 | if (r < 0) | |
3074 | return r; | |
3075 | } | |
5e5b137a | 3076 | |
23d8b221 SS |
3077 | r = link_set_proxy_arp(link); |
3078 | if (r < 0) | |
3079 | return r; | |
3080 | ||
a0e5c15d FK |
3081 | r = ipv6_proxy_ndp_addresses_configure(link); |
3082 | if (r < 0) | |
3083 | return r; | |
3084 | ||
769d324c LP |
3085 | r = link_set_ipv4_forward(link); |
3086 | if (r < 0) | |
3087 | return r; | |
3088 | ||
3089 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
3090 | if (r < 0) |
3091 | return r; | |
3092 | ||
49092e22 SS |
3093 | r = link_set_ipv6_privacy_extensions(link); |
3094 | if (r < 0) | |
3095 | return r; | |
3096 | ||
4f2e437a SS |
3097 | r = link_set_ipv6_accept_ra(link); |
3098 | if (r < 0) | |
3099 | return r; | |
3100 | ||
8749cbcd SS |
3101 | r = link_set_ipv6_dad_transmits(link); |
3102 | if (r < 0) | |
3103 | return r; | |
b69c3180 SS |
3104 | |
3105 | r = link_set_ipv6_hop_limit(link); | |
3106 | if (r < 0) | |
3107 | return r; | |
8749cbcd | 3108 | |
99d2baa2 SS |
3109 | r = link_set_flags(link); |
3110 | if (r < 0) | |
3111 | return r; | |
3112 | ||
11102cba SS |
3113 | r = link_set_ipv6_mtu(link); |
3114 | if (r < 0) | |
3115 | return r; | |
3116 | ||
78c958f8 | 3117 | if (link_ipv4ll_enabled(link)) { |
b22d8a00 | 3118 | r = ipv4ll_configure(link); |
eb34d4af TG |
3119 | if (r < 0) |
3120 | return r; | |
3121 | } | |
3122 | ||
78c958f8 | 3123 | if (link_dhcp4_enabled(link)) { |
64b21ece MV |
3124 | r = dhcp4_set_promote_secondaries(link); |
3125 | if (r < 0) | |
3126 | return r; | |
3127 | ||
3c9b8860 | 3128 | r = dhcp4_configure(link); |
eb34d4af TG |
3129 | if (r < 0) |
3130 | return r; | |
eb34d4af TG |
3131 | } |
3132 | ||
78c958f8 | 3133 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
3134 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
3135 | if (r < 0) | |
3136 | return r; | |
3137 | ||
3138 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
3139 | if (r < 0) | |
3140 | return r; | |
dd43110f TG |
3141 | } |
3142 | ||
62379e88 TG |
3143 | if (link_dhcp6_enabled(link) || |
3144 | link_ipv6_accept_ra_enabled(link)) { | |
f5a8c43f TG |
3145 | r = dhcp6_configure(link); |
3146 | if (r < 0) | |
3147 | return r; | |
3148 | } | |
3149 | ||
3150 | if (link_ipv6_accept_ra_enabled(link)) { | |
de1e9928 | 3151 | r = ndisc_configure(link); |
4138fb2c PF |
3152 | if (r < 0) |
3153 | return r; | |
3154 | } | |
3155 | ||
7465dd22 PF |
3156 | if (link_radv_enabled(link)) { |
3157 | r = radv_configure(link); | |
3158 | if (r < 0) | |
3159 | return r; | |
3160 | } | |
3161 | ||
8e1ad1ea | 3162 | if (link_lldp_rx_enabled(link)) { |
fc6a313b LP |
3163 | r = sd_lldp_new(&link->lldp); |
3164 | if (r < 0) | |
3165 | return r; | |
3166 | ||
3167 | r = sd_lldp_set_ifindex(link->lldp, link->ifindex); | |
34437b4f LP |
3168 | if (r < 0) |
3169 | return r; | |
3170 | ||
3171 | r = sd_lldp_match_capabilities(link->lldp, | |
3172 | link->network->lldp_mode == LLDP_MODE_ROUTERS_ONLY ? | |
6afa6767 BG |
3173 | SD_LLDP_SYSTEM_CAPABILITIES_ALL_ROUTERS : |
3174 | SD_LLDP_SYSTEM_CAPABILITIES_ALL); | |
ce43e484 SS |
3175 | if (r < 0) |
3176 | return r; | |
3177 | ||
b553a6b1 LP |
3178 | r = sd_lldp_set_filter_address(link->lldp, &link->mac); |
3179 | if (r < 0) | |
3180 | return r; | |
3181 | ||
ce43e484 SS |
3182 | r = sd_lldp_attach_event(link->lldp, NULL, 0); |
3183 | if (r < 0) | |
3184 | return r; | |
49699bac | 3185 | |
032b27f5 | 3186 | r = sd_lldp_set_callback(link->lldp, lldp_handler, link); |
49699bac SS |
3187 | if (r < 0) |
3188 | return r; | |
273eec24 LP |
3189 | |
3190 | r = link_update_lldp(link); | |
3191 | if (r < 0) | |
3192 | return r; | |
ce43e484 SS |
3193 | } |
3194 | ||
40288ece YW |
3195 | r = link_set_mtu(link, link->network->mtu, link->network->mtu_is_set); |
3196 | if (r < 0) | |
3197 | return r; | |
44b598a1 | 3198 | |
0e2fdb83 SS |
3199 | if (socket_ipv6_is_supported()) { |
3200 | r = link_configure_addrgen_mode(link); | |
3201 | if (r < 0) | |
3202 | return r; | |
3203 | } | |
3204 | ||
55dc8c4a YW |
3205 | return link_configure_after_setting_mtu(link); |
3206 | } | |
3207 | ||
3208 | static int link_configure_after_setting_mtu(Link *link) { | |
3209 | int r; | |
3210 | ||
3211 | assert(link); | |
3212 | assert(link->network); | |
bd08ce56 | 3213 | assert(link->state == LINK_STATE_INITIALIZED); |
55dc8c4a YW |
3214 | |
3215 | if (link->setting_mtu) | |
3216 | return 0; | |
3217 | ||
dad2d78e | 3218 | if (link_has_carrier(link) || link->network->configure_without_carrier) { |
1e9be60b TG |
3219 | r = link_acquire_conf(link); |
3220 | if (r < 0) | |
3221 | return r; | |
cc544d5f | 3222 | } |
1e9be60b | 3223 | |
3f265037 | 3224 | return link_enter_join_netdev(link); |
505f8da7 TG |
3225 | } |
3226 | ||
27dfc982 YW |
3227 | static int duid_set_uuid(DUID *duid, sd_id128_t uuid) { |
3228 | assert(duid); | |
3229 | ||
3230 | if (duid->raw_data_len > 0) | |
3231 | return 0; | |
3232 | ||
3233 | if (duid->type != DUID_TYPE_UUID) | |
3234 | return -EINVAL; | |
3235 | ||
3236 | memcpy(&duid->raw_data, &uuid, sizeof(sd_id128_t)); | |
3237 | duid->raw_data_len = sizeof(sd_id128_t); | |
3238 | ||
3239 | return 1; | |
3240 | } | |
3241 | ||
3242 | int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { | |
3243 | Manager *manager = userdata; | |
3244 | const sd_bus_error *e; | |
3245 | const void *a; | |
3246 | size_t sz; | |
3247 | DUID *duid; | |
3248 | Link *link; | |
3249 | int r; | |
3250 | ||
3251 | assert(m); | |
3252 | assert(manager); | |
3253 | ||
3254 | e = sd_bus_message_get_error(m); | |
3255 | if (e) { | |
3256 | log_error_errno(sd_bus_error_get_errno(e), | |
ab4dd984 | 3257 | "Could not get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %s", |
27dfc982 YW |
3258 | e->message); |
3259 | goto configure; | |
3260 | } | |
3261 | ||
3262 | r = sd_bus_message_read_array(m, 'y', &a, &sz); | |
3263 | if (r < 0) | |
3264 | goto configure; | |
3265 | ||
3266 | if (sz != sizeof(sd_id128_t)) { | |
ab4dd984 | 3267 | log_error("Invalid product UUID. Falling back to use machine-app-specific ID as DUID-UUID."); |
27dfc982 YW |
3268 | goto configure; |
3269 | } | |
3270 | ||
3271 | memcpy(&manager->product_uuid, a, sz); | |
3272 | while ((duid = set_steal_first(manager->duids_requesting_uuid))) | |
3273 | (void) duid_set_uuid(duid, manager->product_uuid); | |
3274 | ||
3275 | manager->duids_requesting_uuid = set_free(manager->duids_requesting_uuid); | |
3276 | ||
3277 | configure: | |
3278 | while ((link = set_steal_first(manager->links_requesting_uuid))) { | |
3279 | r = link_configure(link); | |
3280 | if (r < 0) | |
3281 | log_link_error_errno(link, r, "Failed to configure link: %m"); | |
3282 | } | |
3283 | ||
3284 | manager->links_requesting_uuid = set_free(manager->links_requesting_uuid); | |
3285 | ||
3286 | /* To avoid calling GetProductUUID() bus method so frequently, set the flag below | |
3287 | * even if the method fails. */ | |
3288 | manager->has_product_uuid = true; | |
3289 | ||
3290 | return 1; | |
3291 | } | |
3292 | ||
3293 | static bool link_requires_uuid(Link *link) { | |
3294 | const DUID *duid; | |
3295 | ||
3296 | assert(link); | |
3297 | assert(link->manager); | |
3298 | assert(link->network); | |
3299 | ||
3300 | duid = link_get_duid(link); | |
3301 | if (duid->type != DUID_TYPE_UUID || duid->raw_data_len != 0) | |
3302 | return false; | |
3303 | ||
3304 | if (link_dhcp4_enabled(link) && IN_SET(link->network->dhcp_client_identifier, DHCP_CLIENT_ID_DUID, DHCP_CLIENT_ID_DUID_ONLY)) | |
3305 | return true; | |
3306 | ||
3307 | if (link_dhcp6_enabled(link) || link_ipv6_accept_ra_enabled(link)) | |
3308 | return true; | |
3309 | ||
3310 | return false; | |
3311 | } | |
3312 | ||
3313 | static int link_configure_duid(Link *link) { | |
3314 | Manager *m; | |
3315 | DUID *duid; | |
3316 | int r; | |
3317 | ||
3318 | assert(link); | |
3319 | assert(link->manager); | |
3320 | assert(link->network); | |
3321 | ||
3322 | m = link->manager; | |
3323 | duid = link_get_duid(link); | |
3324 | ||
3325 | if (!link_requires_uuid(link)) | |
3326 | return 1; | |
3327 | ||
3328 | if (m->has_product_uuid) { | |
3329 | (void) duid_set_uuid(duid, m->product_uuid); | |
3330 | return 1; | |
3331 | } | |
3332 | ||
3333 | if (!m->links_requesting_uuid) { | |
3334 | r = manager_request_product_uuid(m, link); | |
3335 | if (r < 0) { | |
3336 | if (r == -ENOMEM) | |
3337 | return r; | |
3338 | ||
ab4dd984 ZJS |
3339 | log_link_warning_errno(link, r, |
3340 | "Failed to get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %m"); | |
27dfc982 YW |
3341 | return 1; |
3342 | } | |
3343 | } else { | |
3344 | r = set_put(m->links_requesting_uuid, link); | |
3345 | if (r < 0) | |
3346 | return log_oom(); | |
3347 | ||
3348 | r = set_put(m->duids_requesting_uuid, duid); | |
3349 | if (r < 0) | |
3350 | return log_oom(); | |
3351 | } | |
3352 | ||
3353 | return 0; | |
3354 | } | |
3355 | ||
e6bf7774 | 3356 | static int link_initialized_and_synced(Link *link) { |
505f8da7 | 3357 | Network *network; |
505f8da7 TG |
3358 | int r; |
3359 | ||
3360 | assert(link); | |
3361 | assert(link->ifname); | |
3362 | assert(link->manager); | |
3363 | ||
bd08ce56 YW |
3364 | /* We may get called either from the asynchronous netlink callback, |
3365 | * or directly for link_add() if running in a container. See link_add(). */ | |
3366 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) | |
4232cf04 | 3367 | return 0; |
505f8da7 | 3368 | |
6a7a4e4d | 3369 | log_link_debug(link, "Link state is up-to-date"); |
bd08ce56 | 3370 | link_set_state(link, LINK_STATE_INITIALIZED); |
505f8da7 | 3371 | |
0d4ad91d AR |
3372 | r = link_new_bound_by_list(link); |
3373 | if (r < 0) | |
3374 | return r; | |
3375 | ||
3376 | r = link_handle_bound_by_list(link); | |
3377 | if (r < 0) | |
3378 | return r; | |
3379 | ||
c4a03a56 | 3380 | if (!link->network) { |
51517f9e | 3381 | r = network_get(link->manager, link->sd_device, link->ifname, |
c4a03a56 TG |
3382 | &link->mac, &network); |
3383 | if (r == -ENOENT) { | |
3384 | link_enter_unmanaged(link); | |
4232cf04 | 3385 | return 0; |
a09dc546 DM |
3386 | } else if (r == 0 && network->unmanaged) { |
3387 | link_enter_unmanaged(link); | |
3388 | return 0; | |
c4a03a56 TG |
3389 | } else if (r < 0) |
3390 | return r; | |
505f8da7 | 3391 | |
c4a03a56 TG |
3392 | if (link->flags & IFF_LOOPBACK) { |
3393 | if (network->link_local != ADDRESS_FAMILY_NO) | |
3394 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 3395 | |
c4a03a56 TG |
3396 | if (network->dhcp != ADDRESS_FAMILY_NO) |
3397 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 3398 | |
c4a03a56 TG |
3399 | if (network->dhcp_server) |
3400 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
3401 | } | |
bd2efe92 | 3402 | |
7d342c03 | 3403 | r = network_apply(network, link); |
c4a03a56 TG |
3404 | if (r < 0) |
3405 | return r; | |
3406 | } | |
505f8da7 | 3407 | |
0d4ad91d AR |
3408 | r = link_new_bound_to_list(link); |
3409 | if (r < 0) | |
3410 | return r; | |
3411 | ||
27dfc982 YW |
3412 | /* link_configure_duid() returns 0 if it requests product UUID. In that case, |
3413 | * link_configure() is called later asynchronously. */ | |
3414 | r = link_configure_duid(link); | |
3415 | if (r <= 0) | |
3416 | return r; | |
3417 | ||
a748b692 TG |
3418 | r = link_configure(link); |
3419 | if (r < 0) | |
3420 | return r; | |
3421 | ||
4232cf04 | 3422 | return 0; |
505f8da7 TG |
3423 | } |
3424 | ||
302a796f YW |
3425 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
3426 | (void) link_initialized_and_synced(link); | |
e6bf7774 YW |
3427 | return 1; |
3428 | } | |
3429 | ||
51517f9e | 3430 | int link_initialized(Link *link, sd_device *device) { |
4afd3348 | 3431 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f561e8e TG |
3432 | int r; |
3433 | ||
3434 | assert(link); | |
3435 | assert(link->manager); | |
3436 | assert(link->manager->rtnl); | |
3437 | assert(device); | |
3438 | ||
8434fd5c | 3439 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
3440 | return 0; |
3441 | ||
51517f9e | 3442 | if (link->sd_device) |
679b3605 TG |
3443 | return 0; |
3444 | ||
79008bdd | 3445 | log_link_debug(link, "udev initialized link"); |
bd08ce56 | 3446 | link_set_state(link, LINK_STATE_INITIALIZED); |
4f561e8e | 3447 | |
51517f9e | 3448 | link->sd_device = sd_device_ref(device); |
4f561e8e | 3449 | |
3c9b8860 TG |
3450 | /* udev has initialized the link, but we don't know if we have yet |
3451 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
3452 | * when it returns we know that the pending NEWLINKs have already been | |
3453 | * processed and that we are up-to-date */ | |
4f561e8e | 3454 | |
3c9b8860 TG |
3455 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
3456 | link->ifindex); | |
4f561e8e TG |
3457 | if (r < 0) |
3458 | return r; | |
3459 | ||
302a796f YW |
3460 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_initialized_handler, |
3461 | link_netlink_destroy_callback, link); | |
4f561e8e TG |
3462 | if (r < 0) |
3463 | return r; | |
3464 | ||
5da8149f TG |
3465 | link_ref(link); |
3466 | ||
4f561e8e TG |
3467 | return 0; |
3468 | } | |
3469 | ||
c4a03a56 | 3470 | static int link_load(Link *link) { |
0bc70f1d TG |
3471 | _cleanup_free_ char *network_file = NULL, |
3472 | *addresses = NULL, | |
f703cc2c | 3473 | *routes = NULL, |
0bc70f1d TG |
3474 | *dhcp4_address = NULL, |
3475 | *ipv4ll_address = NULL; | |
3476 | union in_addr_union address; | |
f703cc2c | 3477 | union in_addr_union route_dst; |
c598ac76 | 3478 | const char *p; |
c4a03a56 TG |
3479 | int r; |
3480 | ||
3481 | assert(link); | |
3482 | ||
aa8fbc74 | 3483 | r = parse_env_file(NULL, link->state_file, |
c4a03a56 TG |
3484 | "NETWORK_FILE", &network_file, |
3485 | "ADDRESSES", &addresses, | |
f703cc2c | 3486 | "ROUTES", &routes, |
0bc70f1d | 3487 | "DHCP4_ADDRESS", &dhcp4_address, |
13df9c39 | 3488 | "IPV4LL_ADDRESS", &ipv4ll_address); |
c4a03a56 TG |
3489 | if (r < 0 && r != -ENOENT) |
3490 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
3491 | ||
3492 | if (network_file) { | |
3493 | Network *network; | |
3494 | char *suffix; | |
3495 | ||
3496 | /* drop suffix */ | |
3497 | suffix = strrchr(network_file, '.'); | |
3498 | if (!suffix) { | |
3499 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
3500 | goto network_file_fail; | |
3501 | } | |
3502 | *suffix = '\0'; | |
3503 | ||
3504 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
3505 | if (r < 0) { | |
3506 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
3507 | goto network_file_fail; | |
3508 | } | |
3509 | ||
7d342c03 | 3510 | r = network_apply(network, link); |
c4a03a56 TG |
3511 | if (r < 0) |
3512 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
3513 | } | |
3514 | ||
3515 | network_file_fail: | |
3516 | ||
3517 | if (addresses) { | |
c598ac76 | 3518 | p = addresses; |
c4a03a56 | 3519 | |
c598ac76 TG |
3520 | for (;;) { |
3521 | _cleanup_free_ char *address_str = NULL; | |
c4a03a56 TG |
3522 | char *prefixlen_str; |
3523 | int family; | |
3524 | unsigned char prefixlen; | |
c4a03a56 | 3525 | |
c598ac76 TG |
3526 | r = extract_first_word(&p, &address_str, NULL, 0); |
3527 | if (r < 0) { | |
3528 | log_link_debug_errno(link, r, "Failed to extract next address string: %m"); | |
3529 | continue; | |
928bc597 TA |
3530 | } |
3531 | if (r == 0) | |
c598ac76 TG |
3532 | break; |
3533 | ||
3534 | prefixlen_str = strchr(address_str, '/'); | |
c4a03a56 | 3535 | if (!prefixlen_str) { |
c598ac76 | 3536 | log_link_debug(link, "Failed to parse address and prefix length %s", address_str); |
c4a03a56 TG |
3537 | continue; |
3538 | } | |
3539 | ||
313cefa1 | 3540 | *prefixlen_str++ = '\0'; |
c4a03a56 TG |
3541 | |
3542 | r = sscanf(prefixlen_str, "%hhu", &prefixlen); | |
3543 | if (r != 1) { | |
3544 | log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str); | |
3545 | continue; | |
3546 | } | |
3547 | ||
c598ac76 | 3548 | r = in_addr_from_string_auto(address_str, &family, &address); |
c4a03a56 | 3549 | if (r < 0) { |
c598ac76 | 3550 | log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str); |
c4a03a56 TG |
3551 | continue; |
3552 | } | |
3553 | ||
3554 | r = address_add(link, family, &address, prefixlen, NULL); | |
3555 | if (r < 0) | |
3556 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
3557 | } | |
3558 | } | |
3559 | ||
f703cc2c | 3560 | if (routes) { |
74544b4e TA |
3561 | p = routes; |
3562 | ||
c598ac76 | 3563 | for (;;) { |
f833694d | 3564 | Route *route; |
c598ac76 | 3565 | _cleanup_free_ char *route_str = NULL; |
4afd3348 | 3566 | _cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL; |
f833694d | 3567 | usec_t lifetime; |
f703cc2c TG |
3568 | char *prefixlen_str; |
3569 | int family; | |
3570 | unsigned char prefixlen, tos, table; | |
3571 | uint32_t priority; | |
3572 | ||
c598ac76 TG |
3573 | r = extract_first_word(&p, &route_str, NULL, 0); |
3574 | if (r < 0) { | |
3575 | log_link_debug_errno(link, r, "Failed to extract next route string: %m"); | |
3576 | continue; | |
928bc597 TA |
3577 | } |
3578 | if (r == 0) | |
c598ac76 TG |
3579 | break; |
3580 | ||
3581 | prefixlen_str = strchr(route_str, '/'); | |
f703cc2c | 3582 | if (!prefixlen_str) { |
c598ac76 | 3583 | log_link_debug(link, "Failed to parse route %s", route_str); |
f703cc2c TG |
3584 | continue; |
3585 | } | |
3586 | ||
313cefa1 | 3587 | *prefixlen_str++ = '\0'; |
f703cc2c | 3588 | |
f833694d TG |
3589 | r = sscanf(prefixlen_str, "%hhu/%hhu/%"SCNu32"/%hhu/"USEC_FMT, &prefixlen, &tos, &priority, &table, &lifetime); |
3590 | if (r != 5) { | |
3591 | log_link_debug(link, | |
3592 | "Failed to parse destination prefix length, tos, priority, table or expiration %s", | |
3593 | prefixlen_str); | |
f703cc2c TG |
3594 | continue; |
3595 | } | |
3596 | ||
c598ac76 | 3597 | r = in_addr_from_string_auto(route_str, &family, &route_dst); |
f703cc2c | 3598 | if (r < 0) { |
c598ac76 | 3599 | log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str); |
f703cc2c TG |
3600 | continue; |
3601 | } | |
3602 | ||
f833694d | 3603 | r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route); |
f703cc2c TG |
3604 | if (r < 0) |
3605 | return log_link_error_errno(link, r, "Failed to add route: %m"); | |
f833694d | 3606 | |
f02ba163 | 3607 | if (lifetime != USEC_INFINITY && !kernel_route_expiration_supported()) { |
f833694d TG |
3608 | r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), lifetime, |
3609 | 0, route_expire_handler, route); | |
3610 | if (r < 0) | |
3611 | log_link_warning_errno(link, r, "Could not arm route expiration handler: %m"); | |
3612 | } | |
3613 | ||
3614 | route->lifetime = lifetime; | |
3615 | sd_event_source_unref(route->expire); | |
1cc6c93a | 3616 | route->expire = TAKE_PTR(expire); |
f703cc2c TG |
3617 | } |
3618 | } | |
3619 | ||
0bc70f1d TG |
3620 | if (dhcp4_address) { |
3621 | r = in_addr_from_string(AF_INET, dhcp4_address, &address); | |
3622 | if (r < 0) { | |
b68d26b8 | 3623 | log_link_debug_errno(link, r, "Failed to parse DHCPv4 address %s: %m", dhcp4_address); |
0bc70f1d TG |
3624 | goto dhcp4_address_fail; |
3625 | } | |
3626 | ||
b1c626f6 | 3627 | r = sd_dhcp_client_new(&link->dhcp_client, link->network ? link->network->dhcp_anonymize : 0); |
0bc70f1d | 3628 | if (r < 0) |
b68d26b8 | 3629 | return log_link_error_errno(link, r, "Failed to create DHCPv4 client: %m"); |
0bc70f1d TG |
3630 | |
3631 | r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in); | |
3632 | if (r < 0) | |
b68d26b8 | 3633 | return log_link_error_errno(link, r, "Failed to set initial DHCPv4 address %s: %m", dhcp4_address); |
0bc70f1d TG |
3634 | } |
3635 | ||
3636 | dhcp4_address_fail: | |
3637 | ||
3638 | if (ipv4ll_address) { | |
3639 | r = in_addr_from_string(AF_INET, ipv4ll_address, &address); | |
3640 | if (r < 0) { | |
b68d26b8 | 3641 | log_link_debug_errno(link, r, "Failed to parse IPv4LL address %s: %m", ipv4ll_address); |
0bc70f1d TG |
3642 | goto ipv4ll_address_fail; |
3643 | } | |
3644 | ||
3645 | r = sd_ipv4ll_new(&link->ipv4ll); | |
3646 | if (r < 0) | |
b68d26b8 | 3647 | return log_link_error_errno(link, r, "Failed to create IPv4LL client: %m"); |
0bc70f1d TG |
3648 | |
3649 | r = sd_ipv4ll_set_address(link->ipv4ll, &address.in); | |
3650 | if (r < 0) | |
b68d26b8 | 3651 | return log_link_error_errno(link, r, "Failed to set initial IPv4LL address %s: %m", ipv4ll_address); |
0bc70f1d TG |
3652 | } |
3653 | ||
3654 | ipv4ll_address_fail: | |
3655 | ||
c4a03a56 TG |
3656 | return 0; |
3657 | } | |
3658 | ||
1c4baffc | 3659 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
51517f9e | 3660 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
505f8da7 | 3661 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; |
51517f9e | 3662 | Link *link; |
5a937ea2 | 3663 | int r; |
505f8da7 TG |
3664 | |
3665 | assert(m); | |
fbbeb65a | 3666 | assert(m->rtnl); |
505f8da7 TG |
3667 | assert(message); |
3668 | assert(ret); | |
3669 | ||
3670 | r = link_new(m, message, ret); | |
3671 | if (r < 0) | |
3672 | return r; | |
3673 | ||
3674 | link = *ret; | |
3675 | ||
6a7a4e4d | 3676 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 3677 | |
c4a03a56 TG |
3678 | r = link_load(link); |
3679 | if (r < 0) | |
3680 | return r; | |
3681 | ||
75f86906 | 3682 | if (detect_container() <= 0) { |
505f8da7 | 3683 | /* not in a container, udev will be around */ |
ae06ab10 | 3684 | sprintf(ifindex_str, "n%d", link->ifindex); |
51517f9e YW |
3685 | r = sd_device_new_from_device_id(&device, ifindex_str); |
3686 | if (r < 0) { | |
3687 | log_link_warning_errno(link, r, "Could not find device: %m"); | |
5c416fc4 TG |
3688 | goto failed; |
3689 | } | |
505f8da7 | 3690 | |
5a937ea2 | 3691 | r = sd_device_get_is_initialized(device); |
51517f9e YW |
3692 | if (r < 0) { |
3693 | log_link_warning_errno(link, r, "Could not determine whether the device is initialized or not: %m"); | |
3694 | goto failed; | |
3695 | } | |
5a937ea2 | 3696 | if (r == 0) { |
505f8da7 | 3697 | /* not yet ready */ |
79008bdd | 3698 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 3699 | return 0; |
3c4cb064 | 3700 | } |
505f8da7 | 3701 | |
299ad32d YW |
3702 | r = device_is_renaming(device); |
3703 | if (r < 0) { | |
3704 | log_link_warning_errno(link, r, "Failed to determine the device is renamed or not: %m"); | |
3705 | goto failed; | |
3706 | } | |
3707 | if (r > 0) { | |
3708 | log_link_debug(link, "Interface is under renaming, pending initialization."); | |
3709 | return 0; | |
3710 | } | |
3711 | ||
4f561e8e TG |
3712 | r = link_initialized(link, device); |
3713 | if (r < 0) | |
5c416fc4 | 3714 | goto failed; |
4f561e8e | 3715 | } else { |
e6bf7774 | 3716 | r = link_initialized_and_synced(link); |
4f561e8e | 3717 | if (r < 0) |
5c416fc4 | 3718 | goto failed; |
4f561e8e | 3719 | } |
505f8da7 | 3720 | |
a748b692 | 3721 | return 0; |
5c416fc4 TG |
3722 | failed: |
3723 | link_enter_failed(link); | |
3724 | return r; | |
a748b692 TG |
3725 | } |
3726 | ||
c601ebf7 | 3727 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
e7ab854c TG |
3728 | int r; |
3729 | ||
3730 | assert(link); | |
3731 | ||
3732 | log_link_info(link, "Gained IPv6LL"); | |
3733 | ||
c601ebf7 | 3734 | link->ipv6ll_address = *address; |
e7ab854c TG |
3735 | link_check_ready(link); |
3736 | ||
201f0c91 | 3737 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_UNMANAGED, LINK_STATE_FAILED)) { |
e7ab854c TG |
3738 | r = link_acquire_ipv6_conf(link); |
3739 | if (r < 0) { | |
3740 | link_enter_failed(link); | |
3741 | return r; | |
3742 | } | |
3743 | } | |
3744 | ||
3745 | return 0; | |
3746 | } | |
3747 | ||
9c0a72f9 TG |
3748 | static int link_carrier_gained(Link *link) { |
3749 | int r; | |
3750 | ||
3751 | assert(link); | |
3752 | ||
201f0c91 | 3753 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_UNMANAGED, LINK_STATE_FAILED)) { |
9c0a72f9 TG |
3754 | r = link_acquire_conf(link); |
3755 | if (r < 0) { | |
3756 | link_enter_failed(link); | |
3757 | return r; | |
3758 | } | |
6fc25497 | 3759 | |
289e6774 | 3760 | r = link_request_set_addresses(link); |
6fc25497 SS |
3761 | if (r < 0) |
3762 | return r; | |
9c0a72f9 TG |
3763 | } |
3764 | ||
0d4ad91d AR |
3765 | r = link_handle_bound_by_list(link); |
3766 | if (r < 0) | |
3767 | return r; | |
3768 | ||
9c0a72f9 TG |
3769 | return 0; |
3770 | } | |
3771 | ||
3772 | static int link_carrier_lost(Link *link) { | |
3773 | int r; | |
3774 | ||
3775 | assert(link); | |
3776 | ||
25e992ba | 3777 | if (link->network && link->network->ignore_carrier_loss) |
93b4dab5 SS |
3778 | return 0; |
3779 | ||
fbdb6605 | 3780 | /* Some devices reset itself while setting the MTU. This causes the DHCP client fall into a loop. |
55dc8c4a YW |
3781 | * setting_mtu keep track whether the device got reset because of setting MTU and does not drop the |
3782 | * configuration and stop the clients as well. */ | |
97e7fb39 SS |
3783 | if (link->setting_mtu) |
3784 | return 0; | |
3785 | ||
9c0a72f9 TG |
3786 | r = link_stop_clients(link); |
3787 | if (r < 0) { | |
3788 | link_enter_failed(link); | |
3789 | return r; | |
3790 | } | |
3791 | ||
28464ae0 SS |
3792 | if (link_dhcp4_server_enabled(link)) |
3793 | (void) sd_dhcp_server_stop(link->dhcp_server); | |
45a9eac9 | 3794 | |
3104883d SS |
3795 | r = link_drop_config(link); |
3796 | if (r < 0) | |
3797 | return r; | |
3798 | ||
f258e948 MP |
3799 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING)) { |
3800 | log_link_debug(link, "State is %s, dropping config", link_state_to_string(link->state)); | |
c436d553 MM |
3801 | r = link_drop_foreign_config(link); |
3802 | if (r < 0) | |
3803 | return r; | |
3804 | } | |
3104883d | 3805 | |
0d4ad91d AR |
3806 | r = link_handle_bound_by_list(link); |
3807 | if (r < 0) | |
3808 | return r; | |
3809 | ||
9c0a72f9 TG |
3810 | return 0; |
3811 | } | |
3812 | ||
3813 | int link_carrier_reset(Link *link) { | |
3814 | int r; | |
3815 | ||
3816 | assert(link); | |
3817 | ||
3818 | if (link_has_carrier(link)) { | |
3819 | r = link_carrier_lost(link); | |
3820 | if (r < 0) | |
3821 | return r; | |
3822 | ||
3823 | r = link_carrier_gained(link); | |
3824 | if (r < 0) | |
3825 | return r; | |
3826 | ||
6a7a4e4d | 3827 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
3828 | } |
3829 | ||
3830 | return 0; | |
3831 | } | |
3832 | ||
1c4baffc | 3833 | int link_update(Link *link, sd_netlink_message *m) { |
c49b33ac | 3834 | struct ether_addr mac; |
ca4e095a | 3835 | const char *ifname; |
afe7fd56 | 3836 | uint32_t mtu; |
a61bb41c | 3837 | bool had_carrier, carrier_gained, carrier_lost; |
22936833 TG |
3838 | int r; |
3839 | ||
dd3efc09 | 3840 | assert(link); |
b8941f74 | 3841 | assert(link->ifname); |
22936833 TG |
3842 | assert(m); |
3843 | ||
7619683b | 3844 | if (link->state == LINK_STATE_LINGER) { |
5238e957 | 3845 | log_link_info(link, "Link re-added"); |
289e6774 | 3846 | link_set_state(link, LINK_STATE_CONFIGURING); |
0d4ad91d AR |
3847 | |
3848 | r = link_new_carrier_maps(link); | |
3849 | if (r < 0) | |
3850 | return r; | |
7619683b TG |
3851 | } |
3852 | ||
1c4baffc | 3853 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 3854 | if (r >= 0 && !streq(ifname, link->ifname)) { |
30de2b89 | 3855 | Manager *manager = link->manager; |
b8941f74 | 3856 | |
30de2b89 | 3857 | log_link_info(link, "Interface name change detected, %s has been renamed to %s.", link->ifname, ifname); |
0d4ad91d | 3858 | |
30de2b89 YW |
3859 | link_drop(link); |
3860 | r = link_add(manager, m, &link); | |
3861 | if (r < 0) | |
3862 | return r; | |
b8941f74 TG |
3863 | } |
3864 | ||
1c4baffc | 3865 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
3866 | if (r >= 0 && mtu > 0) { |
3867 | link->mtu = mtu; | |
4e964aa0 | 3868 | if (link->original_mtu == 0) { |
afe7fd56 | 3869 | link->original_mtu = mtu; |
6a7a4e4d | 3870 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
3871 | } |
3872 | ||
3873 | if (link->dhcp_client) { | |
3c9b8860 TG |
3874 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
3875 | link->mtu); | |
fc95c359 YW |
3876 | if (r < 0) |
3877 | return log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); | |
afe7fd56 | 3878 | } |
7465dd22 PF |
3879 | |
3880 | if (link->radv) { | |
3881 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
3882 | if (r < 0) | |
3883 | return log_link_warning_errno(link, r, "Could not set MTU for Router Advertisement: %m"); | |
3884 | } | |
9842de0d | 3885 | } |
69629de9 | 3886 | |
e9189a1f TG |
3887 | /* The kernel may broadcast NEWLINK messages without the MAC address |
3888 | set, simply ignore them. */ | |
1c4baffc | 3889 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
e9189a1f | 3890 | if (r >= 0) { |
3c9b8860 TG |
3891 | if (memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, |
3892 | ETH_ALEN)) { | |
c49b33ac | 3893 | |
3c9b8860 TG |
3894 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, |
3895 | ETH_ALEN); | |
c49b33ac | 3896 | |
79008bdd | 3897 | log_link_debug(link, "MAC address: " |
20861203 TG |
3898 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", |
3899 | mac.ether_addr_octet[0], | |
3900 | mac.ether_addr_octet[1], | |
3901 | mac.ether_addr_octet[2], | |
3902 | mac.ether_addr_octet[3], | |
3903 | mac.ether_addr_octet[4], | |
3904 | mac.ether_addr_octet[5]); | |
c49b33ac | 3905 | |
20861203 TG |
3906 | if (link->ipv4ll) { |
3907 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); | |
6a7a4e4d LP |
3908 | if (r < 0) |
3909 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
c49b33ac | 3910 | } |
c49b33ac | 3911 | |
20861203 | 3912 | if (link->dhcp_client) { |
3c9b8860 | 3913 | r = sd_dhcp_client_set_mac(link->dhcp_client, |
76253e73 DW |
3914 | (const uint8_t *) &link->mac, |
3915 | sizeof (link->mac), | |
3916 | ARPHRD_ETHER); | |
6a7a4e4d LP |
3917 | if (r < 0) |
3918 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
413708d1 | 3919 | |
fff1f40c YW |
3920 | r = dhcp4_set_client_identifier(link); |
3921 | if (r < 0) | |
3922 | return r; | |
c49b33ac | 3923 | } |
4138fb2c PF |
3924 | |
3925 | if (link->dhcp6_client) { | |
f24648a6 | 3926 | const DUID* duid = link_get_duid(link); |
8341a5c3 | 3927 | |
4138fb2c | 3928 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, |
76253e73 DW |
3929 | (const uint8_t *) &link->mac, |
3930 | sizeof (link->mac), | |
3931 | ARPHRD_ETHER); | |
6a7a4e4d LP |
3932 | if (r < 0) |
3933 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
413708d1 | 3934 | |
8217ed5e TH |
3935 | if (link->network->iaid_set) { |
3936 | r = sd_dhcp6_client_set_iaid(link->dhcp6_client, | |
3937 | link->network->iaid); | |
3938 | if (r < 0) | |
3939 | return log_link_warning_errno(link, r, "Could not update DHCPv6 IAID: %m"); | |
3940 | } | |
413708d1 | 3941 | |
8341a5c3 ZJS |
3942 | r = sd_dhcp6_client_set_duid(link->dhcp6_client, |
3943 | duid->type, | |
3944 | duid->raw_data_len > 0 ? duid->raw_data : NULL, | |
3945 | duid->raw_data_len); | |
413708d1 VK |
3946 | if (r < 0) |
3947 | return log_link_warning_errno(link, r, "Could not update DHCPv6 DUID: %m"); | |
4138fb2c | 3948 | } |
7465dd22 PF |
3949 | |
3950 | if (link->radv) { | |
3951 | r = sd_radv_set_mac(link->radv, &link->mac); | |
3952 | if (r < 0) | |
3953 | return log_link_warning_errno(link, r, "Could not update MAC for Router Advertisement: %m"); | |
3954 | } | |
420d2058 SS |
3955 | |
3956 | if (link->ndisc) { | |
3957 | r = sd_ndisc_set_mac(link->ndisc, &link->mac); | |
3958 | if (r < 0) | |
3959 | return log_link_warning_errno(link, r, "Could not update MAC for ndisc: %m"); | |
3960 | } | |
c49b33ac | 3961 | } |
4f882b2a TG |
3962 | } |
3963 | ||
a61bb41c TG |
3964 | had_carrier = link_has_carrier(link); |
3965 | ||
3966 | r = link_update_flags(link, m); | |
3967 | if (r < 0) | |
3968 | return r; | |
3969 | ||
273eec24 LP |
3970 | r = link_update_lldp(link); |
3971 | if (r < 0) | |
3972 | return r; | |
3973 | ||
a61bb41c TG |
3974 | carrier_gained = !had_carrier && link_has_carrier(link); |
3975 | carrier_lost = had_carrier && !link_has_carrier(link); | |
3976 | ||
3977 | if (carrier_gained) { | |
6a7a4e4d | 3978 | log_link_info(link, "Gained carrier"); |
a61bb41c | 3979 | |
9c0a72f9 TG |
3980 | r = link_carrier_gained(link); |
3981 | if (r < 0) | |
3982 | return r; | |
a61bb41c | 3983 | } else if (carrier_lost) { |
6a7a4e4d | 3984 | log_link_info(link, "Lost carrier"); |
a61bb41c | 3985 | |
9c0a72f9 TG |
3986 | r = link_carrier_lost(link); |
3987 | if (r < 0) | |
a61bb41c | 3988 | return r; |
a61bb41c TG |
3989 | } |
3990 | ||
3991 | return 0; | |
dd3efc09 | 3992 | } |
fe8db0c5 | 3993 | |
b295beea LP |
3994 | static void print_link_hashmap(FILE *f, const char *prefix, Hashmap* h) { |
3995 | bool space = false; | |
3996 | Iterator i; | |
3997 | Link *link; | |
3998 | ||
3999 | assert(f); | |
4000 | assert(prefix); | |
4001 | ||
4002 | if (hashmap_isempty(h)) | |
4003 | return; | |
4004 | ||
0d536673 | 4005 | fputs(prefix, f); |
b295beea LP |
4006 | HASHMAP_FOREACH(link, h, i) { |
4007 | if (space) | |
0d536673 | 4008 | fputc(' ', f); |
b295beea LP |
4009 | |
4010 | fprintf(f, "%i", link->ifindex); | |
4011 | space = true; | |
4012 | } | |
4013 | ||
0d536673 | 4014 | fputc('\n', f); |
b295beea LP |
4015 | } |
4016 | ||
fe8db0c5 | 4017 | int link_save(Link *link) { |
68a8723c | 4018 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 4019 | _cleanup_fclose_ FILE *f = NULL; |
e375dcde | 4020 | const char *admin_state, *oper_state; |
e7780c8d | 4021 | Address *a; |
c1eb9872 | 4022 | Route *route; |
e7780c8d | 4023 | Iterator i; |
fe8db0c5 TG |
4024 | int r; |
4025 | ||
4026 | assert(link); | |
4027 | assert(link->state_file); | |
68a8723c | 4028 | assert(link->lease_file); |
bbf7c048 TG |
4029 | assert(link->manager); |
4030 | ||
370e9930 | 4031 | if (link->state == LINK_STATE_LINGER) { |
6990fb6b | 4032 | (void) unlink(link->state_file); |
370e9930 TG |
4033 | return 0; |
4034 | } | |
4035 | ||
34437b4f LP |
4036 | link_lldp_save(link); |
4037 | ||
deb2e523 TG |
4038 | admin_state = link_state_to_string(link->state); |
4039 | assert(admin_state); | |
4040 | ||
e375dcde TG |
4041 | oper_state = link_operstate_to_string(link->operstate); |
4042 | assert(oper_state); | |
deb2e523 | 4043 | |
fe8db0c5 TG |
4044 | r = fopen_temporary(link->state_file, &f, &temp_path); |
4045 | if (r < 0) | |
6a7a4e4d | 4046 | goto fail; |
fe8db0c5 | 4047 | |
5512a963 | 4048 | (void) fchmod(fileno(f), 0644); |
fe8db0c5 TG |
4049 | |
4050 | fprintf(f, | |
4051 | "# This is private data. Do not parse.\n" | |
deb2e523 | 4052 | "ADMIN_STATE=%s\n" |
6dcaa6f5 TG |
4053 | "OPER_STATE=%s\n", |
4054 | admin_state, oper_state); | |
fe8db0c5 | 4055 | |
bcb7a07e | 4056 | if (link->network) { |
ea352b40 | 4057 | bool space; |
07bdc70d | 4058 | sd_dhcp6_lease *dhcp6_lease = NULL; |
b2a81c0b LP |
4059 | const char *dhcp_domainname = NULL; |
4060 | char **dhcp6_domains = NULL; | |
b85bc551 | 4061 | char **dhcp_domains = NULL; |
5512a963 | 4062 | unsigned j; |
07bdc70d | 4063 | |
c1a38904 MTL |
4064 | fprintf(f, "REQUIRED_FOR_ONLINE=%s\n", |
4065 | yes_no(link->network->required_for_online)); | |
4066 | ||
4ac77d63 YW |
4067 | fprintf(f, "REQUIRED_OPER_STATE_FOR_ONLINE=%s\n", |
4068 | strempty(link_operstate_to_string(link->network->required_operstate_for_online))); | |
4069 | ||
07bdc70d | 4070 | if (link->dhcp6_client) { |
4058d339 TG |
4071 | r = sd_dhcp6_client_get_lease(link->dhcp6_client, &dhcp6_lease); |
4072 | if (r < 0 && r != -ENOMSG) | |
07bdc70d PF |
4073 | log_link_debug(link, "No DHCPv6 lease"); |
4074 | } | |
b0e39c82 | 4075 | |
adc5b2e2 TG |
4076 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
4077 | ||
0d536673 | 4078 | fputs("DNS=", f); |
ea352b40 | 4079 | space = false; |
5512a963 LP |
4080 | |
4081 | for (j = 0; j < link->network->n_dns; j++) { | |
4082 | _cleanup_free_ char *b = NULL; | |
4083 | ||
4084 | r = in_addr_to_string(link->network->dns[j].family, | |
4085 | &link->network->dns[j].address, &b); | |
4086 | if (r < 0) { | |
4087 | log_debug_errno(r, "Failed to format address, ignoring: %m"); | |
4088 | continue; | |
4089 | } | |
4090 | ||
4091 | if (space) | |
0d536673 LP |
4092 | fputc(' ', f); |
4093 | fputs(b, f); | |
5512a963 LP |
4094 | space = true; |
4095 | } | |
d5314fff | 4096 | |
27cb34f5 | 4097 | if (link->network->dhcp_use_dns && |
b0e39c82 TG |
4098 | link->dhcp_lease) { |
4099 | const struct in_addr *addresses; | |
4100 | ||
4101 | r = sd_dhcp_lease_get_dns(link->dhcp_lease, &addresses); | |
072320ea TH |
4102 | if (r > 0) |
4103 | if (serialize_in_addrs(f, addresses, r, space, in4_addr_is_non_local) > 0) | |
4104 | space = true; | |
07bdc70d PF |
4105 | } |
4106 | ||
27cb34f5 | 4107 | if (link->network->dhcp_use_dns && dhcp6_lease) { |
07bdc70d PF |
4108 | struct in6_addr *in6_addrs; |
4109 | ||
4110 | r = sd_dhcp6_lease_get_dns(dhcp6_lease, &in6_addrs); | |
4111 | if (r > 0) { | |
4112 | if (space) | |
0d536673 | 4113 | fputc(' ', f); |
07bdc70d | 4114 | serialize_in6_addrs(f, in6_addrs, r); |
1e7a0e21 LP |
4115 | space = true; |
4116 | } | |
4117 | } | |
4118 | ||
4119 | /* Make sure to flush out old entries before we use the NDISC data */ | |
4120 | ndisc_vacuum(link); | |
4121 | ||
b296797f | 4122 | if (link->network->ipv6_accept_ra_use_dns && link->ndisc_rdnss) { |
1e7a0e21 LP |
4123 | NDiscRDNSS *dd; |
4124 | ||
4125 | SET_FOREACH(dd, link->ndisc_rdnss, i) { | |
4126 | if (space) | |
0d536673 | 4127 | fputc(' ', f); |
1e7a0e21 LP |
4128 | |
4129 | serialize_in6_addrs(f, &dd->address, 1); | |
4130 | space = true; | |
b0e39c82 TG |
4131 | } |
4132 | } | |
4133 | ||
0d536673 | 4134 | fputc('\n', f); |
b0e39c82 | 4135 | |
0d536673 | 4136 | fputs("NTP=", f); |
ea352b40 | 4137 | space = false; |
3df9bec5 | 4138 | fputstrv(f, link->network->ntp, NULL, &space); |
d5314fff | 4139 | |
27cb34f5 | 4140 | if (link->network->dhcp_use_ntp && |
b0e39c82 TG |
4141 | link->dhcp_lease) { |
4142 | const struct in_addr *addresses; | |
4143 | ||
4144 | r = sd_dhcp_lease_get_ntp(link->dhcp_lease, &addresses); | |
072320ea TH |
4145 | if (r > 0) |
4146 | if (serialize_in_addrs(f, addresses, r, space, in4_addr_is_non_local) > 0) | |
4147 | space = true; | |
07bdc70d PF |
4148 | } |
4149 | ||
27cb34f5 | 4150 | if (link->network->dhcp_use_ntp && dhcp6_lease) { |
07bdc70d PF |
4151 | struct in6_addr *in6_addrs; |
4152 | char **hosts; | |
07bdc70d PF |
4153 | |
4154 | r = sd_dhcp6_lease_get_ntp_addrs(dhcp6_lease, | |
4155 | &in6_addrs); | |
4156 | if (r > 0) { | |
4157 | if (space) | |
0d536673 | 4158 | fputc(' ', f); |
07bdc70d PF |
4159 | serialize_in6_addrs(f, in6_addrs, r); |
4160 | space = true; | |
4161 | } | |
4162 | ||
4163 | r = sd_dhcp6_lease_get_ntp_fqdn(dhcp6_lease, &hosts); | |
3df9bec5 LP |
4164 | if (r > 0) |
4165 | fputstrv(f, hosts, NULL, &space); | |
b0e39c82 TG |
4166 | } |
4167 | ||
0d536673 | 4168 | fputc('\n', f); |
bd8f6538 | 4169 | |
b2a81c0b | 4170 | if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
b85bc551 | 4171 | if (link->dhcp_lease) { |
b2a81c0b | 4172 | (void) sd_dhcp_lease_get_domainname(link->dhcp_lease, &dhcp_domainname); |
b85bc551 DW |
4173 | (void) sd_dhcp_lease_get_search_domains(link->dhcp_lease, &dhcp_domains); |
4174 | } | |
b2a81c0b LP |
4175 | if (dhcp6_lease) |
4176 | (void) sd_dhcp6_lease_get_domains(dhcp6_lease, &dhcp6_domains); | |
07bdc70d PF |
4177 | } |
4178 | ||
5e2a51d5 | 4179 | ordered_set_print(f, "DOMAINS=", link->network->search_domains); |
07bdc70d | 4180 | |
1e7a0e21 LP |
4181 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) { |
4182 | NDiscDNSSL *dd; | |
9b4d1882 | 4183 | |
1e7a0e21 LP |
4184 | if (dhcp_domainname) |
4185 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
4186 | if (dhcp_domains) |
4187 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
4188 | if (dhcp6_domains) |
4189 | fputstrv(f, dhcp6_domains, NULL, &space); | |
4190 | ||
4191 | SET_FOREACH(dd, link->ndisc_dnssl, i) | |
4192 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); | |
4193 | } | |
b2a81c0b | 4194 | |
0d536673 | 4195 | fputc('\n', f); |
6192b846 | 4196 | |
5e2a51d5 | 4197 | ordered_set_print(f, "ROUTE_DOMAINS=", link->network->route_domains); |
b2a81c0b | 4198 | |
1e7a0e21 LP |
4199 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE) { |
4200 | NDiscDNSSL *dd; | |
b2a81c0b | 4201 | |
1e7a0e21 LP |
4202 | if (dhcp_domainname) |
4203 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
4204 | if (dhcp_domains) |
4205 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
4206 | if (dhcp6_domains) |
4207 | fputstrv(f, dhcp6_domains, NULL, &space); | |
4208 | ||
4209 | SET_FOREACH(dd, link->ndisc_dnssl, i) | |
4210 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); | |
4211 | } | |
b2a81c0b | 4212 | |
0d536673 | 4213 | fputc('\n', f); |
67272d15 | 4214 | |
3c9b8860 | 4215 | fprintf(f, "LLMNR=%s\n", |
a7e5da6e | 4216 | resolve_support_to_string(link->network->llmnr)); |
aaa297d4 LP |
4217 | fprintf(f, "MDNS=%s\n", |
4218 | resolve_support_to_string(link->network->mdns)); | |
7ece6f58 LP |
4219 | if (link->network->dns_default_route >= 0) |
4220 | fprintf(f, "DNS_DEFAULT_ROUTE=%s\n", yes_no(link->network->dns_default_route)); | |
e7780c8d | 4221 | |
c9299be2 IT |
4222 | if (link->network->dns_over_tls_mode != _DNS_OVER_TLS_MODE_INVALID) |
4223 | fprintf(f, "DNS_OVER_TLS=%s\n", | |
4224 | dns_over_tls_mode_to_string(link->network->dns_over_tls_mode)); | |
d050561a | 4225 | |
ad6c0475 LP |
4226 | if (link->network->dnssec_mode != _DNSSEC_MODE_INVALID) |
4227 | fprintf(f, "DNSSEC=%s\n", | |
4228 | dnssec_mode_to_string(link->network->dnssec_mode)); | |
4229 | ||
8a516214 LP |
4230 | if (!set_isempty(link->network->dnssec_negative_trust_anchors)) { |
4231 | const char *n; | |
4232 | ||
0d536673 | 4233 | fputs("DNSSEC_NTA=", f); |
8a516214 | 4234 | space = false; |
d390f8ef LP |
4235 | SET_FOREACH(n, link->network->dnssec_negative_trust_anchors, i) |
4236 | fputs_with_space(f, n, NULL, &space); | |
0d536673 | 4237 | fputc('\n', f); |
8a516214 LP |
4238 | } |
4239 | ||
0d536673 | 4240 | fputs("ADDRESSES=", f); |
e7780c8d TG |
4241 | space = false; |
4242 | SET_FOREACH(a, link->addresses, i) { | |
4243 | _cleanup_free_ char *address_str = NULL; | |
4244 | ||
4245 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
4246 | if (r < 0) | |
4247 | goto fail; | |
4248 | ||
e7780c8d TG |
4249 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
4250 | space = true; | |
4251 | } | |
0d536673 | 4252 | fputc('\n', f); |
c1eb9872 | 4253 | |
0d536673 | 4254 | fputs("ROUTES=", f); |
c1eb9872 TG |
4255 | space = false; |
4256 | SET_FOREACH(route, link->routes, i) { | |
4257 | _cleanup_free_ char *route_str = NULL; | |
4258 | ||
4259 | r = in_addr_to_string(route->family, &route->dst, &route_str); | |
4260 | if (r < 0) | |
4261 | goto fail; | |
4262 | ||
ecc3f340 ZJS |
4263 | fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%"PRIu32"/"USEC_FMT, |
4264 | space ? " " : "", route_str, | |
f833694d | 4265 | route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime); |
c1eb9872 TG |
4266 | space = true; |
4267 | } | |
4268 | ||
0d536673 | 4269 | fputc('\n', f); |
bcb7a07e | 4270 | } |
7374f9d8 | 4271 | |
b295beea LP |
4272 | print_link_hashmap(f, "CARRIER_BOUND_TO=", link->bound_to_links); |
4273 | print_link_hashmap(f, "CARRIER_BOUND_BY=", link->bound_by_links); | |
0d4ad91d | 4274 | |
8eb9058d | 4275 | if (link->dhcp_lease) { |
0bc70f1d | 4276 | struct in_addr address; |
8eb9058d LP |
4277 | const char *tz = NULL; |
4278 | ||
0bc70f1d TG |
4279 | assert(link->network); |
4280 | ||
8eb9058d LP |
4281 | r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); |
4282 | if (r >= 0) | |
4283 | fprintf(f, "TIMEZONE=%s\n", tz); | |
8eb9058d | 4284 | |
0bc70f1d TG |
4285 | r = sd_dhcp_lease_get_address(link->dhcp_lease, &address); |
4286 | if (r >= 0) { | |
0d536673 | 4287 | fputs("DHCP4_ADDRESS=", f); |
072320ea | 4288 | serialize_in_addrs(f, &address, 1, false, NULL); |
0d536673 | 4289 | fputc('\n', f); |
0bc70f1d | 4290 | } |
d9876a52 | 4291 | |
bd91b83e | 4292 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 4293 | if (r < 0) |
c2d6bd61 | 4294 | goto fail; |
fe8db0c5 | 4295 | |
7374f9d8 | 4296 | fprintf(f, |
b0e39c82 TG |
4297 | "DHCP_LEASE=%s\n", |
4298 | link->lease_file); | |
deb2e523 | 4299 | } else |
6990fb6b | 4300 | (void) unlink(link->lease_file); |
fe8db0c5 | 4301 | |
0bc70f1d TG |
4302 | if (link->ipv4ll) { |
4303 | struct in_addr address; | |
4304 | ||
4305 | r = sd_ipv4ll_get_address(link->ipv4ll, &address); | |
4306 | if (r >= 0) { | |
0d536673 | 4307 | fputs("IPV4LL_ADDRESS=", f); |
072320ea | 4308 | serialize_in_addrs(f, &address, 1, false, NULL); |
0d536673 | 4309 | fputc('\n', f); |
0bc70f1d TG |
4310 | } |
4311 | } | |
4312 | ||
c2d6bd61 LP |
4313 | r = fflush_and_check(f); |
4314 | if (r < 0) | |
4315 | goto fail; | |
fe8db0c5 | 4316 | |
c2d6bd61 | 4317 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 4318 | r = -errno; |
c2d6bd61 | 4319 | goto fail; |
fe8db0c5 TG |
4320 | } |
4321 | ||
c2d6bd61 | 4322 | return 0; |
dacd6cee | 4323 | |
c2d6bd61 | 4324 | fail: |
6a7a4e4d | 4325 | (void) unlink(link->state_file); |
6a7a4e4d LP |
4326 | if (temp_path) |
4327 | (void) unlink(temp_path); | |
4328 | ||
dacd6cee | 4329 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
4330 | } |
4331 | ||
84de38c5 TG |
4332 | /* The serialized state in /run is no longer up-to-date. */ |
4333 | void link_dirty(Link *link) { | |
4334 | int r; | |
4335 | ||
4336 | assert(link); | |
4337 | ||
0c241a37 SS |
4338 | /* mark manager dirty as link is dirty */ |
4339 | manager_dirty(link->manager); | |
4340 | ||
84de38c5 TG |
4341 | r = set_ensure_allocated(&link->manager->dirty_links, NULL); |
4342 | if (r < 0) | |
4343 | /* allocation errors are ignored */ | |
4344 | return; | |
4345 | ||
4346 | r = set_put(link->manager->dirty_links, link); | |
0c241a37 SS |
4347 | if (r <= 0) |
4348 | /* don't take another ref if the link was already dirty */ | |
84de38c5 TG |
4349 | return; |
4350 | ||
4351 | link_ref(link); | |
4352 | } | |
4353 | ||
4354 | /* The serialized state in /run is up-to-date */ | |
4355 | void link_clean(Link *link) { | |
4356 | assert(link); | |
4357 | assert(link->manager); | |
4358 | ||
1046bf9b | 4359 | link_unref(set_remove(link->manager->dirty_links, link)); |
84de38c5 TG |
4360 | } |
4361 | ||
fe8db0c5 | 4362 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 4363 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 4364 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 4365 | [LINK_STATE_CONFIGURING] = "configuring", |
fe8db0c5 | 4366 | [LINK_STATE_CONFIGURED] = "configured", |
57bd6899 | 4367 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 4368 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 4369 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
4370 | }; |
4371 | ||
4372 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); |