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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
f579559b | 2 | |
9aa5d8ba | 3 | #include <netinet/in.h> |
f579559b | 4 | #include <linux/if.h> |
8f815e8b | 5 | #include <linux/if_arp.h> |
518cd6b5 | 6 | #include <linux/if_link.h> |
4cc7a82c | 7 | #include <unistd.h> |
f579559b | 8 | |
b5efdb8a | 9 | #include "alloc-util.h" |
737f1405 YW |
10 | #include "bond.h" |
11 | #include "bridge.h" | |
1346b1f0 | 12 | #include "bus-util.h" |
27dfc982 | 13 | #include "dhcp-identifier.h" |
bd91b83e | 14 | #include "dhcp-lease-internal.h" |
686d13b9 | 15 | #include "env-file.h" |
4bb7cc82 | 16 | #include "ethtool-util.h" |
3ffd4af2 | 17 | #include "fd-util.h" |
cf1d700d | 18 | #include "fileio.h" |
737f1405 | 19 | #include "ipvlan.h" |
ef118d00 | 20 | #include "missing_network.h" |
cf1d700d | 21 | #include "netlink-util.h" |
c6f7c917 | 22 | #include "network-internal.h" |
fb486c90 | 23 | #include "networkd-address-label.h" |
3ddcbeea | 24 | #include "networkd-can.h" |
8fcf1d61 | 25 | #include "networkd-dhcp-server.h" |
ca5ad760 YW |
26 | #include "networkd-dhcp4.h" |
27 | #include "networkd-dhcp6.h" | |
28 | #include "networkd-ipv4ll.h" | |
a0e5c15d | 29 | #include "networkd-ipv6-proxy-ndp.h" |
6a1af3d4 YW |
30 | #include "networkd-link-bus.h" |
31 | #include "networkd-link.h" | |
8e1ad1ea | 32 | #include "networkd-lldp-tx.h" |
23f53b99 | 33 | #include "networkd-manager.h" |
1e7a0e21 | 34 | #include "networkd-ndisc.h" |
e4a71bf3 | 35 | #include "networkd-neighbor.h" |
75156ccb | 36 | #include "networkd-nexthop.h" |
518cd6b5 | 37 | #include "networkd-sriov.h" |
7465dd22 | 38 | #include "networkd-radv.h" |
bce67bbe | 39 | #include "networkd-routing-policy-rule.h" |
8d968fdd | 40 | #include "networkd-wifi.h" |
cf1d700d TG |
41 | #include "set.h" |
42 | #include "socket-util.h" | |
bf331d87 | 43 | #include "stat-util.h" |
15a5e950 | 44 | #include "stdio-util.h" |
8b43440b | 45 | #include "string-table.h" |
51517f9e | 46 | #include "strv.h" |
62e021a9 | 47 | #include "sysctl-util.h" |
34658df2 | 48 | #include "tc.h" |
e4de7287 | 49 | #include "tmpfile-util.h" |
299ad32d | 50 | #include "udev-util.h" |
cf1d700d | 51 | #include "util.h" |
737f1405 | 52 | #include "vrf.h" |
fc2f9534 | 53 | |
bdb9f580 YW |
54 | uint32_t link_get_vrf_table(Link *link) { |
55 | return link->network->vrf ? VRF(link->network->vrf)->table : RT_TABLE_MAIN; | |
56 | } | |
57 | ||
58 | uint32_t link_get_dhcp_route_table(Link *link) { | |
59 | /* When the interface is part of an VRF use the VRFs routing table, unless | |
60 | * another table is explicitly specified. */ | |
61 | if (link->network->dhcp_route_table_set) | |
62 | return link->network->dhcp_route_table; | |
63 | return link_get_vrf_table(link); | |
64 | } | |
65 | ||
66 | uint32_t link_get_ipv6_accept_ra_route_table(Link *link) { | |
67 | if (link->network->ipv6_accept_ra_route_table_set) | |
68 | return link->network->ipv6_accept_ra_route_table; | |
69 | return link_get_vrf_table(link); | |
70 | } | |
71 | ||
f24648a6 YW |
72 | DUID* link_get_duid(Link *link) { |
73 | if (link->network->duid.type != _DUID_TYPE_INVALID) | |
74 | return &link->network->duid; | |
75 | else | |
76 | return &link->manager->duid; | |
77 | } | |
78 | ||
b9d74c40 LP |
79 | static bool link_dhcp6_enabled(Link *link) { |
80 | assert(link); | |
81 | ||
fa709992 LP |
82 | if (!socket_ipv6_is_supported()) |
83 | return false; | |
84 | ||
78c958f8 TG |
85 | if (link->flags & IFF_LOOPBACK) |
86 | return false; | |
87 | ||
88 | if (!link->network) | |
89 | return false; | |
90 | ||
f2bfcdb9 YW |
91 | if (link->network->bond) |
92 | return false; | |
93 | ||
500b96eb | 94 | if (link->iftype == ARPHRD_CAN) |
af9ba57a YW |
95 | return false; |
96 | ||
e0ee46f2 | 97 | return link->network->dhcp & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
98 | } |
99 | ||
b9d74c40 LP |
100 | static bool link_dhcp4_enabled(Link *link) { |
101 | assert(link); | |
102 | ||
78c958f8 TG |
103 | if (link->flags & IFF_LOOPBACK) |
104 | return false; | |
105 | ||
106 | if (!link->network) | |
107 | return false; | |
108 | ||
f2bfcdb9 YW |
109 | if (link->network->bond) |
110 | return false; | |
111 | ||
500b96eb | 112 | if (link->iftype == ARPHRD_CAN) |
af9ba57a YW |
113 | return false; |
114 | ||
e0ee46f2 | 115 | return link->network->dhcp & ADDRESS_FAMILY_IPV4; |
78c958f8 TG |
116 | } |
117 | ||
b9d74c40 LP |
118 | static bool link_dhcp4_server_enabled(Link *link) { |
119 | assert(link); | |
120 | ||
78c958f8 TG |
121 | if (link->flags & IFF_LOOPBACK) |
122 | return false; | |
123 | ||
124 | if (!link->network) | |
125 | return false; | |
126 | ||
f2bfcdb9 YW |
127 | if (link->network->bond) |
128 | return false; | |
129 | ||
500b96eb | 130 | if (link->iftype == ARPHRD_CAN) |
af9ba57a YW |
131 | return false; |
132 | ||
78c958f8 TG |
133 | return link->network->dhcp_server; |
134 | } | |
135 | ||
2d792895 | 136 | bool link_ipv4ll_enabled(Link *link, AddressFamily mask) { |
b9d74c40 | 137 | assert(link); |
910feb78 | 138 | assert((mask & ~(ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_FALLBACK_IPV4)) == 0); |
b9d74c40 | 139 | |
78c958f8 TG |
140 | if (link->flags & IFF_LOOPBACK) |
141 | return false; | |
142 | ||
143 | if (!link->network) | |
144 | return false; | |
145 | ||
500b96eb | 146 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
147 | return false; |
148 | ||
98d20a17 | 149 | if (STRPTR_IN_SET(link->kind, |
150 | "vrf", "wireguard", "ipip", "gre", "ip6gre","ip6tnl", "sit", "vti", | |
b0486c73 | 151 | "vti6", "nlmon", "xfrm", "bareudp")) |
a8f5bba6 JD |
152 | return false; |
153 | ||
f410d463 YW |
154 | /* L3 or L3S mode do not support ARP. */ |
155 | if (IN_SET(link_get_ipvlan_mode(link), NETDEV_IPVLAN_MODE_L3, NETDEV_IPVLAN_MODE_L3S)) | |
156 | return false; | |
157 | ||
f2bfcdb9 YW |
158 | if (link->network->bond) |
159 | return false; | |
160 | ||
910feb78 | 161 | return link->network->link_local & mask; |
8bc17bb3 SS |
162 | } |
163 | ||
b9d74c40 LP |
164 | static bool link_ipv6ll_enabled(Link *link) { |
165 | assert(link); | |
166 | ||
fa709992 LP |
167 | if (!socket_ipv6_is_supported()) |
168 | return false; | |
169 | ||
d0d6a4cd TG |
170 | if (link->flags & IFF_LOOPBACK) |
171 | return false; | |
172 | ||
173 | if (!link->network) | |
174 | return false; | |
175 | ||
500b96eb | 176 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
177 | return false; |
178 | ||
179 | if (STRPTR_IN_SET(link->kind, "vrf", "wireguard", "ipip", "gre", "sit", "vti", "nlmon")) | |
a8f5bba6 JD |
180 | return false; |
181 | ||
f2bfcdb9 YW |
182 | if (link->network->bond) |
183 | return false; | |
184 | ||
e0ee46f2 | 185 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
186 | } |
187 | ||
439689c6 SS |
188 | static bool link_ipv6_enabled(Link *link) { |
189 | assert(link); | |
190 | ||
191 | if (!socket_ipv6_is_supported()) | |
192 | return false; | |
193 | ||
b102cdca | 194 | if (link->network->bond) |
2b00a4e0 TY |
195 | return false; |
196 | ||
500b96eb | 197 | if (link->iftype == ARPHRD_CAN) |
af9ba57a YW |
198 | return false; |
199 | ||
4cef7fe3 | 200 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
adfeee49 YW |
201 | if (link_ipv6ll_enabled(link)) |
202 | return true; | |
203 | ||
204 | if (network_has_static_ipv6_configurations(link->network)) | |
205 | return true; | |
206 | ||
207 | return false; | |
439689c6 SS |
208 | } |
209 | ||
7465dd22 PF |
210 | static bool link_radv_enabled(Link *link) { |
211 | assert(link); | |
212 | ||
213 | if (!link_ipv6ll_enabled(link)) | |
214 | return false; | |
215 | ||
55a7c78b | 216 | return link->network->router_prefix_delegation != RADV_PREFIX_DELEGATION_NONE; |
7465dd22 PF |
217 | } |
218 | ||
769d324c | 219 | static bool link_ipv4_forward_enabled(Link *link) { |
b9d74c40 LP |
220 | assert(link); |
221 | ||
5a8bcb67 LP |
222 | if (link->flags & IFF_LOOPBACK) |
223 | return false; | |
224 | ||
225 | if (!link->network) | |
226 | return false; | |
227 | ||
2d792895 | 228 | if (link->network->ip_forward == _ADDRESS_FAMILY_INVALID) |
765afd5c LP |
229 | return false; |
230 | ||
e0ee46f2 | 231 | return link->network->ip_forward & ADDRESS_FAMILY_IPV4; |
769d324c LP |
232 | } |
233 | ||
234 | static bool link_ipv6_forward_enabled(Link *link) { | |
b9d74c40 | 235 | assert(link); |
765afd5c LP |
236 | |
237 | if (!socket_ipv6_is_supported()) | |
238 | return false; | |
239 | ||
769d324c LP |
240 | if (link->flags & IFF_LOOPBACK) |
241 | return false; | |
242 | ||
243 | if (!link->network) | |
244 | return false; | |
245 | ||
2d792895 | 246 | if (link->network->ip_forward == _ADDRESS_FAMILY_INVALID) |
765afd5c LP |
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 | ||
57ad7607 | 312 | static int link_update_ipv6_sysctl(Link *link) { |
482efedc | 313 | bool enabled; |
439689c6 SS |
314 | int r; |
315 | ||
316 | if (link->flags & IFF_LOOPBACK) | |
317 | return 0; | |
318 | ||
482efedc SS |
319 | enabled = link_ipv6_enabled(link); |
320 | if (enabled) { | |
321 | r = sysctl_write_ip_property_boolean(AF_INET6, link->ifname, "disable_ipv6", false); | |
322 | if (r < 0) | |
57ad7607 ZJS |
323 | return log_link_warning_errno(link, r, "Cannot enable IPv6: %m"); |
324 | ||
325 | log_link_info(link, "IPv6 successfully enabled"); | |
482efedc | 326 | } |
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 | ||
34bf3c00 YW |
336 | if (!link->network) |
337 | return false; | |
338 | ||
bb262ef0 | 339 | if (link->master_ifindex > 0 && link->network->bridge) |
34bf3c00 YW |
340 | return true; |
341 | ||
bb262ef0 YW |
342 | /* TODO: add conditions for other netdevs. */ |
343 | ||
34bf3c00 YW |
344 | return false; |
345 | } | |
346 | ||
45e11abf YW |
347 | static void link_update_master_operstate(Link *link, NetDev *netdev) { |
348 | Link *master; | |
349 | ||
350 | if (!netdev) | |
351 | return; | |
352 | ||
7936917e YW |
353 | if (netdev->ifindex <= 0) |
354 | return; | |
355 | ||
45e11abf YW |
356 | if (link_get(link->manager, netdev->ifindex, &master) < 0) |
357 | return; | |
358 | ||
359 | link_update_operstate(master, true); | |
360 | } | |
361 | ||
362 | void link_update_operstate(Link *link, bool also_update_master) { | |
84de38c5 | 363 | LinkOperationalState operstate; |
1678fbb3 YW |
364 | LinkCarrierState carrier_state; |
365 | LinkAddressState address_state; | |
35c5a9ca | 366 | _cleanup_strv_free_ char **p = NULL; |
1678fbb3 | 367 | uint8_t scope = RT_SCOPE_NOWHERE; |
35c5a9ca | 368 | bool changed = false; |
1678fbb3 | 369 | Address *address; |
14153d1b | 370 | |
84de38c5 TG |
371 | assert(link); |
372 | ||
373 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
1678fbb3 | 374 | carrier_state = LINK_CARRIER_STATE_DORMANT; |
84de38c5 | 375 | else if (link_has_carrier(link)) { |
1678fbb3 YW |
376 | if (link_is_enslaved(link)) |
377 | carrier_state = LINK_CARRIER_STATE_ENSLAVED; | |
84de38c5 | 378 | else |
1678fbb3 | 379 | carrier_state = LINK_CARRIER_STATE_CARRIER; |
84de38c5 | 380 | } else if (link->flags & IFF_UP) |
1678fbb3 | 381 | carrier_state = LINK_CARRIER_STATE_NO_CARRIER; |
84de38c5 | 382 | else |
1678fbb3 | 383 | carrier_state = LINK_CARRIER_STATE_OFF; |
84de38c5 | 384 | |
1678fbb3 | 385 | if (carrier_state >= LINK_CARRIER_STATE_CARRIER) { |
959f65d3 YW |
386 | Link *slave; |
387 | ||
90e74a66 | 388 | SET_FOREACH(slave, link->slaves) { |
959f65d3 | 389 | link_update_operstate(slave, false); |
84de38c5 | 390 | |
1678fbb3 YW |
391 | if (slave->carrier_state < LINK_CARRIER_STATE_CARRIER) |
392 | carrier_state = LINK_CARRIER_STATE_DEGRADED_CARRIER; | |
84de38c5 | 393 | } |
959f65d3 | 394 | } |
84de38c5 | 395 | |
90e74a66 | 396 | SET_FOREACH(address, link->addresses) { |
1678fbb3 YW |
397 | if (!address_is_ready(address)) |
398 | continue; | |
84de38c5 | 399 | |
1678fbb3 YW |
400 | if (address->scope < scope) |
401 | scope = address->scope; | |
402 | } | |
84de38c5 | 403 | |
1678fbb3 | 404 | /* for operstate we also take foreign addresses into account */ |
90e74a66 | 405 | SET_FOREACH(address, link->addresses_foreign) { |
1678fbb3 YW |
406 | if (!address_is_ready(address)) |
407 | continue; | |
408 | ||
409 | if (address->scope < scope) | |
410 | scope = address->scope; | |
411 | } | |
412 | ||
413 | if (scope < RT_SCOPE_SITE) | |
414 | /* universally accessible addresses found */ | |
415 | address_state = LINK_ADDRESS_STATE_ROUTABLE; | |
416 | else if (scope < RT_SCOPE_HOST) | |
417 | /* only link or site local addresses found */ | |
418 | address_state = LINK_ADDRESS_STATE_DEGRADED; | |
84de38c5 | 419 | else |
1678fbb3 YW |
420 | /* no useful addresses found */ |
421 | address_state = LINK_ADDRESS_STATE_OFF; | |
422 | ||
423 | /* Mapping of address and carrier state vs operational state | |
424 | * carrier state | |
425 | * | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
426 | * ------------------------------------------------------------------------------ | |
427 | * off | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
428 | * address_state degraded | off | no-carrier | dormant | degraded-carrier | degraded | enslaved | |
429 | * routable | off | no-carrier | dormant | degraded-carrier | routable | routable | |
430 | */ | |
84de38c5 | 431 | |
1678fbb3 YW |
432 | if (carrier_state < LINK_CARRIER_STATE_CARRIER || address_state == LINK_ADDRESS_STATE_OFF) |
433 | operstate = (LinkOperationalState) carrier_state; | |
434 | else if (address_state == LINK_ADDRESS_STATE_ROUTABLE) | |
435 | operstate = LINK_OPERSTATE_ROUTABLE; | |
436 | else if (carrier_state == LINK_CARRIER_STATE_CARRIER) | |
437 | operstate = LINK_OPERSTATE_DEGRADED; | |
438 | else | |
14153d1b YW |
439 | operstate = LINK_OPERSTATE_ENSLAVED; |
440 | ||
35c5a9ca YW |
441 | if (link->carrier_state != carrier_state) { |
442 | link->carrier_state = carrier_state; | |
443 | changed = true; | |
444 | if (strv_extend(&p, "CarrierState") < 0) | |
445 | log_oom(); | |
446 | } | |
959f65d3 | 447 | |
35c5a9ca YW |
448 | if (link->address_state != address_state) { |
449 | link->address_state = address_state; | |
450 | changed = true; | |
451 | if (strv_extend(&p, "AddressState") < 0) | |
452 | log_oom(); | |
959f65d3 YW |
453 | } |
454 | ||
84de38c5 TG |
455 | if (link->operstate != operstate) { |
456 | link->operstate = operstate; | |
35c5a9ca YW |
457 | changed = true; |
458 | if (strv_extend(&p, "OperationalState") < 0) | |
459 | log_oom(); | |
84de38c5 | 460 | } |
959f65d3 | 461 | |
35c5a9ca YW |
462 | if (p) |
463 | link_send_changed_strv(link, p); | |
464 | if (changed) | |
465 | link_dirty(link); | |
466 | ||
45e11abf YW |
467 | if (also_update_master && link->network) { |
468 | link_update_master_operstate(link, link->network->bond); | |
469 | link_update_master_operstate(link, link->network->bridge); | |
959f65d3 | 470 | } |
84de38c5 TG |
471 | } |
472 | ||
51d18171 TG |
473 | #define FLAG_STRING(string, flag, old, new) \ |
474 | (((old ^ new) & flag) \ | |
475 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
476 | : "") | |
477 | ||
bb262ef0 | 478 | static int link_update_flags(Link *link, sd_netlink_message *m, bool force_update_operstate) { |
51d18171 TG |
479 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
480 | uint8_t operstate; | |
481 | int r; | |
482 | ||
483 | assert(link); | |
484 | ||
485 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
486 | if (r < 0) |
487 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 488 | |
1c4baffc | 489 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
490 | if (r < 0) |
491 | /* if we got a message without operstate, take it to mean | |
492 | the state was unchanged */ | |
493 | operstate = link->kernel_operstate; | |
494 | ||
bb262ef0 | 495 | if (!force_update_operstate && (link->flags == flags) && (link->kernel_operstate == operstate)) |
51d18171 TG |
496 | return 0; |
497 | ||
498 | if (link->flags != flags) { | |
6a7a4e4d | 499 | 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 |
500 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
501 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
502 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
503 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
504 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
505 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
506 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
507 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
508 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
509 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
510 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
511 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
512 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
513 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
514 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
515 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
516 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
517 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
518 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
519 | ||
520 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
521 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
522 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
523 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
524 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
525 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
526 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
527 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
528 | ||
529 | /* link flags are currently at most 18 bits, let's align to | |
530 | * printing 20 */ | |
531 | if (unknown_flags_added) | |
79008bdd | 532 | log_link_debug(link, |
6a7a4e4d | 533 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
534 | unknown_flags_added); |
535 | ||
536 | if (unknown_flags_removed) | |
79008bdd | 537 | log_link_debug(link, |
6a7a4e4d | 538 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
539 | unknown_flags_removed); |
540 | } | |
541 | ||
542 | link->flags = flags; | |
543 | link->kernel_operstate = operstate; | |
544 | ||
959f65d3 | 545 | link_update_operstate(link, true); |
51d18171 TG |
546 | |
547 | return 0; | |
548 | } | |
549 | ||
1c4baffc | 550 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
8e766630 | 551 | _cleanup_(link_unrefp) Link *link = NULL; |
6cad256d | 552 | const char *ifname, *kind = NULL; |
b710e6b6 | 553 | unsigned short iftype; |
572b21d9 YW |
554 | int r, ifindex; |
555 | uint16_t type; | |
f579559b | 556 | |
0c2f9b84 | 557 | assert(manager); |
505f8da7 | 558 | assert(message); |
f579559b TG |
559 | assert(ret); |
560 | ||
6cad256d TJ |
561 | /* check for link kind */ |
562 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
563 | if (r == 0) { | |
db2f8a2e | 564 | (void) sd_netlink_message_read_string(message, IFLA_INFO_KIND, &kind); |
6cad256d TJ |
565 | r = sd_netlink_message_exit_container(message); |
566 | if (r < 0) | |
567 | return r; | |
568 | } | |
569 | ||
1c4baffc | 570 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
571 | if (r < 0) |
572 | return r; | |
573 | else if (type != RTM_NEWLINK) | |
574 | return -EINVAL; | |
575 | ||
576 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
577 | if (r < 0) | |
578 | return r; | |
579 | else if (ifindex <= 0) | |
580 | return -EINVAL; | |
581 | ||
b710e6b6 LP |
582 | r = sd_rtnl_message_link_get_type(message, &iftype); |
583 | if (r < 0) | |
584 | return r; | |
585 | ||
1c4baffc | 586 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
587 | if (r < 0) |
588 | return r; | |
589 | ||
17f9c355 | 590 | link = new(Link, 1); |
f579559b TG |
591 | if (!link) |
592 | return -ENOMEM; | |
593 | ||
17f9c355 YW |
594 | *link = (Link) { |
595 | .n_ref = 1, | |
596 | .manager = manager, | |
597 | .state = LINK_STATE_PENDING, | |
17f9c355 YW |
598 | .ifindex = ifindex, |
599 | .iftype = iftype, | |
15761549 YW |
600 | |
601 | .n_dns = (unsigned) -1, | |
602 | .dns_default_route = -1, | |
603 | .llmnr = _RESOLVE_SUPPORT_INVALID, | |
604 | .mdns = _RESOLVE_SUPPORT_INVALID, | |
605 | .dnssec_mode = _DNSSEC_MODE_INVALID, | |
606 | .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID, | |
17f9c355 YW |
607 | }; |
608 | ||
505f8da7 TG |
609 | link->ifname = strdup(ifname); |
610 | if (!link->ifname) | |
611 | return -ENOMEM; | |
f579559b | 612 | |
6cad256d TJ |
613 | if (kind) { |
614 | link->kind = strdup(kind); | |
615 | if (!link->kind) | |
616 | return -ENOMEM; | |
617 | } | |
618 | ||
cbff7170 TJ |
619 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t *)&link->master_ifindex); |
620 | if (r < 0) | |
621 | log_link_debug_errno(link, r, "New device has no master, continuing without"); | |
622 | ||
1c4baffc | 623 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 624 | if (r < 0) |
34437b4f | 625 | log_link_debug_errno(link, r, "MAC address not found for new device, continuing without"); |
512922f8 | 626 | |
c643bda5 | 627 | r = ethtool_get_permanent_macaddr(&manager->ethtool_fd, link->ifname, &link->permanent_mac); |
4bb7cc82 YW |
628 | if (r < 0) |
629 | log_link_debug_errno(link, r, "Permanent MAC address not found for new device, continuing without: %m"); | |
630 | ||
c643bda5 YW |
631 | r = ethtool_get_driver(&manager->ethtool_fd, link->ifname, &link->driver); |
632 | if (r < 0) | |
633 | log_link_debug_errno(link, r, "Failed to get driver, continuing without: %m"); | |
634 | ||
572b21d9 YW |
635 | r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &link->alternative_names); |
636 | if (r < 0 && r != -ENODATA) | |
637 | return r; | |
638 | ||
34437b4f | 639 | if (asprintf(&link->state_file, "/run/systemd/netif/links/%d", link->ifindex) < 0) |
315db1a8 | 640 | return -ENOMEM; |
fe8db0c5 | 641 | |
34437b4f | 642 | if (asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", link->ifindex) < 0) |
68a8723c TG |
643 | return -ENOMEM; |
644 | ||
34437b4f | 645 | if (asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", link->ifindex) < 0) |
49699bac SS |
646 | return -ENOMEM; |
647 | ||
d5099efc | 648 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
649 | if (r < 0) |
650 | return r; | |
651 | ||
652 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
653 | if (r < 0) |
654 | return r; | |
655 | ||
bb262ef0 | 656 | r = link_update_flags(link, message, false); |
51d18171 TG |
657 | if (r < 0) |
658 | return r; | |
659 | ||
1cc6c93a | 660 | *ret = TAKE_PTR(link); |
f579559b TG |
661 | |
662 | return 0; | |
663 | } | |
664 | ||
15761549 YW |
665 | void link_ntp_settings_clear(Link *link) { |
666 | link->ntp = strv_free(link->ntp); | |
667 | } | |
668 | ||
669 | void link_dns_settings_clear(Link *link) { | |
e77bd3fd YW |
670 | if (link->n_dns != (unsigned) -1) |
671 | for (unsigned i = 0; i < link->n_dns; i++) | |
672 | in_addr_full_free(link->dns[i]); | |
15761549 YW |
673 | link->dns = mfree(link->dns); |
674 | link->n_dns = (unsigned) -1; | |
675 | ||
676 | link->search_domains = ordered_set_free_free(link->search_domains); | |
677 | link->route_domains = ordered_set_free_free(link->route_domains); | |
678 | ||
679 | link->dns_default_route = -1; | |
680 | link->llmnr = _RESOLVE_SUPPORT_INVALID; | |
681 | link->mdns = _RESOLVE_SUPPORT_INVALID; | |
682 | link->dnssec_mode = _DNSSEC_MODE_INVALID; | |
683 | link->dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID; | |
684 | ||
685 | link->dnssec_negative_trust_anchors = set_free_free(link->dnssec_negative_trust_anchors); | |
686 | } | |
687 | ||
1a6bb31f YW |
688 | static void link_free_engines(Link *link) { |
689 | if (!link) | |
690 | return; | |
691 | ||
692 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); | |
693 | link->dhcp_client = sd_dhcp_client_unref(link->dhcp_client); | |
694 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); | |
1a6bb31f YW |
695 | |
696 | link->lldp = sd_lldp_unref(link->lldp); | |
697 | ||
698 | ndisc_flush(link); | |
699 | ||
700 | link->ipv4ll = sd_ipv4ll_unref(link->ipv4ll); | |
701 | link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); | |
1633c457 | 702 | link->dhcp6_lease = sd_dhcp6_lease_unref(link->dhcp6_lease); |
1a6bb31f YW |
703 | link->ndisc = sd_ndisc_unref(link->ndisc); |
704 | link->radv = sd_radv_unref(link->radv); | |
705 | } | |
706 | ||
8301aa0b | 707 | static Link *link_free(Link *link) { |
428fd0a7 TG |
708 | Address *address; |
709 | ||
8301aa0b | 710 | assert(link); |
f579559b | 711 | |
15761549 YW |
712 | link_ntp_settings_clear(link); |
713 | link_dns_settings_clear(link); | |
714 | ||
8eec0b9d YW |
715 | link->routes = set_free(link->routes); |
716 | link->routes_foreign = set_free(link->routes_foreign); | |
6e537f62 YW |
717 | link->dhcp_routes = set_free(link->dhcp_routes); |
718 | link->dhcp_routes_old = set_free(link->dhcp_routes_old); | |
1633c457 YW |
719 | link->dhcp6_routes = set_free(link->dhcp6_routes); |
720 | link->dhcp6_routes_old = set_free(link->dhcp6_routes_old); | |
721 | link->dhcp6_pd_routes = set_free(link->dhcp6_pd_routes); | |
722 | link->dhcp6_pd_routes_old = set_free(link->dhcp6_pd_routes_old); | |
69203fba | 723 | link->ndisc_routes = set_free(link->ndisc_routes); |
adda1ed9 | 724 | |
8eec0b9d YW |
725 | link->nexthops = set_free(link->nexthops); |
726 | link->nexthops_foreign = set_free(link->nexthops_foreign); | |
c16c7808 | 727 | |
8eec0b9d YW |
728 | link->neighbors = set_free(link->neighbors); |
729 | link->neighbors_foreign = set_free(link->neighbors_foreign); | |
d1bdafd2 | 730 | |
8eec0b9d YW |
731 | link->addresses = set_free(link->addresses); |
732 | link->addresses_foreign = set_free(link->addresses_foreign); | |
e5526518 | 733 | link->static_addresses = set_free(link->static_addresses); |
1633c457 YW |
734 | link->dhcp6_addresses = set_free(link->dhcp6_addresses); |
735 | link->dhcp6_addresses_old = set_free(link->dhcp6_addresses_old); | |
736 | link->dhcp6_pd_addresses = set_free(link->dhcp6_pd_addresses); | |
737 | link->dhcp6_pd_addresses_old = set_free(link->dhcp6_pd_addresses_old); | |
69203fba | 738 | link->ndisc_addresses = set_free(link->ndisc_addresses); |
adda1ed9 | 739 | |
11bf3cce LP |
740 | while ((address = link->pool_addresses)) { |
741 | LIST_REMOVE(addresses, link->pool_addresses, address); | |
742 | address_free(address); | |
743 | } | |
744 | ||
7272b25e | 745 | link_lldp_emit_stop(link); |
1a6bb31f | 746 | link_free_engines(link); |
68a8723c | 747 | free(link->lease_file); |
49699bac SS |
748 | free(link->lldp_file); |
749 | ||
c166a070 | 750 | free(link->ifname); |
572b21d9 | 751 | strv_free(link->alternative_names); |
ceac4078 | 752 | free(link->kind); |
8d968fdd | 753 | free(link->ssid); |
c643bda5 | 754 | free(link->driver); |
6cad256d | 755 | |
db2f8a2e | 756 | (void) unlink(link->state_file); |
fe8db0c5 | 757 | free(link->state_file); |
c166a070 | 758 | |
51517f9e | 759 | sd_device_unref(link->sd_device); |
b5db00e5 | 760 | |
0d4ad91d | 761 | hashmap_free(link->bound_to_links); |
0d4ad91d AR |
762 | hashmap_free(link->bound_by_links); |
763 | ||
5f707e12 | 764 | set_free_with_destructor(link->slaves, link_unref); |
033295c1 | 765 | |
c9c908a6 YW |
766 | network_unref(link->network); |
767 | ||
8301aa0b | 768 | return mfree(link); |
14b746f7 TG |
769 | } |
770 | ||
8301aa0b | 771 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 772 | |
11a7f229 TG |
773 | int link_get(Manager *m, int ifindex, Link **ret) { |
774 | Link *link; | |
11a7f229 TG |
775 | |
776 | assert(m); | |
e856ed00 | 777 | assert(ifindex > 0); |
11a7f229 TG |
778 | assert(ret); |
779 | ||
ae06ab10 | 780 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
781 | if (!link) |
782 | return -ENODEV; | |
783 | ||
784 | *ret = link; | |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
af9ba57a | 789 | void link_set_state(Link *link, LinkState state) { |
e331e246 TG |
790 | assert(link); |
791 | ||
792 | if (link->state == state) | |
793 | return; | |
794 | ||
0beb9542 YW |
795 | log_link_debug(link, "State changed: %s -> %s", |
796 | link_state_to_string(link->state), | |
797 | link_state_to_string(state)); | |
798 | ||
e331e246 TG |
799 | link->state = state; |
800 | ||
801 | link_send_changed(link, "AdministrativeState", NULL); | |
e331e246 TG |
802 | } |
803 | ||
57bd6899 TG |
804 | static void link_enter_unmanaged(Link *link) { |
805 | assert(link); | |
806 | ||
e331e246 | 807 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 808 | |
84de38c5 | 809 | link_dirty(link); |
57bd6899 TG |
810 | } |
811 | ||
95355a28 | 812 | int link_stop_clients(Link *link, bool may_keep_dhcp) { |
111bb8f9 | 813 | int r = 0, k; |
051e77ca | 814 | Address *ad; |
111bb8f9 TG |
815 | |
816 | assert(link); | |
817 | assert(link->manager); | |
818 | assert(link->manager->event); | |
819 | ||
80060352 ZJS |
820 | bool keep_dhcp = may_keep_dhcp && |
821 | link->network && | |
822 | (link->manager->restarting || | |
823 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP_ON_STOP)); | |
824 | ||
825 | if (link->dhcp_client && !keep_dhcp) { | |
111bb8f9 | 826 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 827 | if (k < 0) |
36c7d709 | 828 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
829 | } |
830 | ||
ba179154 | 831 | if (link->ipv4ll) { |
111bb8f9 | 832 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d | 833 | if (k < 0) |
36c7d709 | 834 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); |
dd43110f TG |
835 | } |
836 | ||
051e77ca SS |
837 | if (link->network) |
838 | LIST_FOREACH(addresses, ad, link->network->static_addresses) | |
839 | if (ad->acd && sd_ipv4acd_is_running(ad->acd) == 0) { | |
840 | k = sd_ipv4acd_stop(ad->acd); | |
841 | if (k < 0) | |
842 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client: %m"); | |
843 | } | |
844 | ||
f5a8c43f TG |
845 | if (link->dhcp6_client) { |
846 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
847 | if (k < 0) | |
36c7d709 | 848 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); |
f5a8c43f | 849 | } |
4138fb2c | 850 | |
1633c457 YW |
851 | if (link_dhcp6_pd_is_enabled(link)) { |
852 | k = dhcp6_pd_remove(link); | |
853 | if (k < 0) | |
854 | r = log_link_warning_errno(link, k, "Could not remove DHCPv6 PD addresses and routes: %m"); | |
855 | } | |
856 | ||
1e7a0e21 LP |
857 | if (link->ndisc) { |
858 | k = sd_ndisc_stop(link->ndisc); | |
6a7a4e4d | 859 | if (k < 0) |
36c7d709 | 860 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
861 | } |
862 | ||
7465dd22 | 863 | if (link->radv) { |
290696e5 | 864 | k = sd_radv_stop(link->radv); |
7465dd22 PF |
865 | if (k < 0) |
866 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
867 | } | |
868 | ||
7272b25e | 869 | link_lldp_emit_stop(link); |
111bb8f9 TG |
870 | return r; |
871 | } | |
872 | ||
b22d8a00 | 873 | void link_enter_failed(Link *link) { |
ef1ba606 | 874 | assert(link); |
f882c247 | 875 | |
370e9930 | 876 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
877 | return; |
878 | ||
6a7a4e4d | 879 | log_link_warning(link, "Failed"); |
449f7554 | 880 | |
e331e246 | 881 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 882 | |
95355a28 | 883 | link_stop_clients(link, false); |
111bb8f9 | 884 | |
84de38c5 | 885 | link_dirty(link); |
f882c247 TG |
886 | } |
887 | ||
7033af49 YW |
888 | static int link_join_netdevs_after_configured(Link *link) { |
889 | NetDev *netdev; | |
7033af49 YW |
890 | int r; |
891 | ||
90e74a66 | 892 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
7033af49 YW |
893 | if (netdev->ifindex > 0) |
894 | /* Assume already enslaved. */ | |
895 | continue; | |
896 | ||
897 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_AFTER_CONFIGURED) | |
898 | continue; | |
899 | ||
900 | log_struct(LOG_DEBUG, | |
901 | LOG_LINK_INTERFACE(link), | |
902 | LOG_NETDEV_INTERFACE(netdev), | |
903 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); | |
904 | ||
905 | r = netdev_join(netdev, link, NULL); | |
906 | if (r < 0) | |
907 | return log_struct_errno(LOG_WARNING, r, | |
908 | LOG_LINK_INTERFACE(link), | |
909 | LOG_NETDEV_INTERFACE(netdev), | |
910 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); | |
911 | } | |
912 | ||
913 | return 0; | |
914 | } | |
915 | ||
e3a7b048 | 916 | static void link_enter_configured(Link *link) { |
dd43110f TG |
917 | assert(link); |
918 | assert(link->network); | |
e3a7b048 | 919 | |
289e6774 | 920 | if (link->state != LINK_STATE_CONFIGURING) |
e3a7b048 | 921 | return; |
dd43110f | 922 | |
e331e246 | 923 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 924 | |
7033af49 YW |
925 | (void) link_join_netdevs_after_configured(link); |
926 | ||
84de38c5 | 927 | link_dirty(link); |
dd43110f TG |
928 | } |
929 | ||
302a796f | 930 | static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
f882c247 TG |
931 | int r; |
932 | ||
1046bf9b | 933 | assert(link); |
7715629e | 934 | assert(link->route_messages > 0); |
289e6774 WKI |
935 | assert(IN_SET(link->state, LINK_STATE_CONFIGURING, |
936 | LINK_STATE_FAILED, LINK_STATE_LINGER)); | |
f882c247 | 937 | |
7715629e | 938 | link->route_messages--; |
f882c247 | 939 | |
77a008c0 | 940 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
941 | return 1; |
942 | ||
1c4baffc | 943 | r = sd_netlink_message_get_errno(m); |
4ff296b0 | 944 | if (r < 0 && r != -EEXIST) { |
5ecb131d | 945 | log_link_message_warning_errno(link, m, r, "Could not set route"); |
4ff296b0 YW |
946 | link_enter_failed(link); |
947 | return 1; | |
948 | } | |
f882c247 | 949 | |
7715629e | 950 | if (link->route_messages == 0) { |
6a7a4e4d | 951 | log_link_debug(link, "Routes set"); |
7715629e | 952 | link->static_routes_configured = true; |
c133770a | 953 | link_set_nexthop(link); |
dd3efc09 | 954 | } |
f882c247 TG |
955 | |
956 | return 1; | |
957 | } | |
958 | ||
b5799eeb | 959 | int link_request_set_routes(Link *link) { |
bf61b05a LP |
960 | enum { |
961 | PHASE_NON_GATEWAY, /* First phase: Routes without a gateway */ | |
962 | PHASE_GATEWAY, /* Second phase: Routes with a gateway */ | |
963 | _PHASE_MAX | |
964 | } phase; | |
a6cc569e | 965 | Route *rt; |
f882c247 TG |
966 | int r; |
967 | ||
968 | assert(link); | |
969 | assert(link->network); | |
289e6774 | 970 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 971 | |
2428613f | 972 | link->static_routes_configured = false; |
27c34f73 | 973 | |
e5526518 YW |
974 | if (!link->addresses_ready) |
975 | return 0; | |
976 | ||
4e2ef9d9 YW |
977 | if (!link_has_carrier(link) && !link->network->configure_without_carrier) |
978 | /* During configuring addresses, the link lost its carrier. As networkd is dropping | |
979 | * the addresses now, let's not configure the routes either. */ | |
980 | return 0; | |
981 | ||
c0ec4746 | 982 | r = link_set_routing_policy_rules(link); |
f3ef324d YW |
983 | if (r < 0) |
984 | return r; | |
f882c247 | 985 | |
bf61b05a LP |
986 | /* First add the routes that enable us to talk to gateways, then add in the others that need a gateway. */ |
987 | for (phase = 0; phase < _PHASE_MAX; phase++) | |
988 | LIST_FOREACH(routes, rt, link->network->static_routes) { | |
1985c54f YW |
989 | if (rt->gateway_from_dhcp) |
990 | continue; | |
0d34228f | 991 | |
6ff5cc6b | 992 | if ((in_addr_is_null(rt->family, &rt->gw) && ordered_set_isempty(rt->multipath_routes)) != (phase == PHASE_NON_GATEWAY)) |
bf61b05a | 993 | continue; |
a6cc569e | 994 | |
80b0e860 | 995 | r = route_configure(rt, link, route_handler, NULL); |
4ff296b0 YW |
996 | if (r < 0) |
997 | return log_link_warning_errno(link, r, "Could not set routes: %m"); | |
c4423317 YW |
998 | if (r > 0) |
999 | link->route_messages++; | |
0d34228f | 1000 | } |
f5be5601 | 1001 | |
7715629e ST |
1002 | if (link->route_messages == 0) { |
1003 | link->static_routes_configured = true; | |
c133770a | 1004 | link_set_nexthop(link); |
b425c3ae | 1005 | } else { |
6a7a4e4d | 1006 | log_link_debug(link, "Setting routes"); |
b425c3ae YW |
1007 | link_set_state(link, LINK_STATE_CONFIGURING); |
1008 | } | |
f882c247 TG |
1009 | |
1010 | return 0; | |
1011 | } | |
1012 | ||
6accfd31 DA |
1013 | void link_check_ready(Link *link) { |
1014 | Address *a; | |
6accfd31 DA |
1015 | |
1016 | assert(link); | |
1017 | ||
5f58af25 YW |
1018 | if (link->state == LINK_STATE_CONFIGURED) |
1019 | return; | |
1020 | ||
1021 | if (link->state != LINK_STATE_CONFIGURING) { | |
1022 | log_link_debug(link, "%s(): link is in %s state.", __func__, link_state_to_string(link->state)); | |
6accfd31 | 1023 | return; |
39373cb9 | 1024 | } |
6accfd31 DA |
1025 | |
1026 | if (!link->network) | |
1027 | return; | |
1028 | ||
39373cb9 YW |
1029 | if (!link->addresses_configured) { |
1030 | log_link_debug(link, "%s(): static addresses are not configured.", __func__); | |
6accfd31 | 1031 | return; |
39373cb9 | 1032 | } |
6accfd31 | 1033 | |
39373cb9 YW |
1034 | if (!link->neighbors_configured) { |
1035 | log_link_debug(link, "%s(): static neighbors are not configured.", __func__); | |
6accfd31 | 1036 | return; |
39373cb9 | 1037 | } |
6accfd31 | 1038 | |
90e74a66 | 1039 | SET_FOREACH(a, link->addresses) |
39373cb9 YW |
1040 | if (!address_is_ready(a)) { |
1041 | _cleanup_free_ char *str = NULL; | |
1042 | ||
1043 | (void) in_addr_to_string(a->family, &a->in_addr, &str); | |
1044 | log_link_debug(link, "%s(): an address %s/%d is not ready.", __func__, strnull(str), a->prefixlen); | |
6aa5773b | 1045 | return; |
39373cb9 | 1046 | } |
6aa5773b | 1047 | |
39373cb9 YW |
1048 | if (!link->static_routes_configured) { |
1049 | log_link_debug(link, "%s(): static routes are not configured.", __func__); | |
6accfd31 | 1050 | return; |
39373cb9 | 1051 | } |
6accfd31 | 1052 | |
39373cb9 YW |
1053 | if (!link->static_nexthops_configured) { |
1054 | log_link_debug(link, "%s(): static nexthops are not configured.", __func__); | |
c16c7808 | 1055 | return; |
39373cb9 | 1056 | } |
c16c7808 | 1057 | |
39373cb9 YW |
1058 | if (!link->routing_policy_rules_configured) { |
1059 | log_link_debug(link, "%s(): static routing policy rules are not configured.", __func__); | |
6accfd31 | 1060 | return; |
39373cb9 | 1061 | } |
6accfd31 | 1062 | |
39373cb9 YW |
1063 | if (!link->tc_configured) { |
1064 | log_link_debug(link, "%s(): traffic controls are not configured.", __func__); | |
4ecdcb07 | 1065 | return; |
39373cb9 | 1066 | } |
4ecdcb07 | 1067 | |
39373cb9 YW |
1068 | if (!link->sr_iov_configured) { |
1069 | log_link_debug(link, "%s(): SR-IOV is not configured.", __func__); | |
518cd6b5 | 1070 | return; |
39373cb9 | 1071 | } |
518cd6b5 | 1072 | |
1f241589 YW |
1073 | if (!link->bridge_mdb_configured) { |
1074 | log_link_debug(link, "%s(): Bridge MDB is not configured.", __func__); | |
1075 | return; | |
1076 | } | |
1077 | ||
463797c1 | 1078 | if (link_has_carrier(link) || !link->network->configure_without_carrier) { |
50550722 YW |
1079 | bool has_ndisc_address = false; |
1080 | NDiscAddress *n; | |
6accfd31 | 1081 | |
1c09d84e | 1082 | if (link_ipv4ll_enabled(link, ADDRESS_FAMILY_IPV4) && !link->ipv4ll_address_configured) { |
39373cb9 | 1083 | log_link_debug(link, "%s(): IPv4LL is not configured.", __func__); |
463797c1 | 1084 | return; |
39373cb9 | 1085 | } |
6accfd31 | 1086 | |
463797c1 | 1087 | if (link_ipv6ll_enabled(link) && |
39373cb9 YW |
1088 | in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) { |
1089 | log_link_debug(link, "%s(): IPv6LL is not configured.", __func__); | |
463797c1 | 1090 | return; |
39373cb9 | 1091 | } |
6accfd31 | 1092 | |
90e74a66 | 1093 | SET_FOREACH(n, link->ndisc_addresses) |
50550722 YW |
1094 | if (!n->marked) { |
1095 | has_ndisc_address = true; | |
1096 | break; | |
1097 | } | |
1098 | ||
15797d6a | 1099 | if ((link_dhcp4_enabled(link) || link_dhcp6_enabled(link)) && |
50550722 | 1100 | !link->dhcp_address && set_isempty(link->dhcp6_addresses) && !has_ndisc_address && |
15797d6a YW |
1101 | !(link_ipv4ll_enabled(link, ADDRESS_FAMILY_FALLBACK_IPV4) && link->ipv4ll_address_configured)) { |
1102 | log_link_debug(link, "%s(): DHCP4 or DHCP6 is enabled but no dynamic address is assigned yet.", __func__); | |
659ad3a0 YW |
1103 | return; |
1104 | } | |
1105 | ||
1633c457 | 1106 | if (link_dhcp4_enabled(link) || link_dhcp6_enabled(link) || link_dhcp6_pd_is_enabled(link) || link_ipv6_accept_ra_enabled(link)) { |
39373cb9 YW |
1107 | if (!link->dhcp4_configured && |
1108 | !(link->dhcp6_address_configured && link->dhcp6_route_configured) && | |
1109 | !(link->dhcp6_pd_address_configured && link->dhcp6_pd_route_configured) && | |
d98c546d | 1110 | !(link->ndisc_addresses_configured && link->ndisc_routes_configured) && |
1c09d84e | 1111 | !(link_ipv4ll_enabled(link, ADDRESS_FAMILY_FALLBACK_IPV4) && link->ipv4ll_address_configured)) { |
39373cb9 YW |
1112 | /* When DHCP or RA is enabled, at least one protocol must provide an address, or |
1113 | * an IPv4ll fallback address must be configured. */ | |
1114 | log_link_debug(link, "%s(): dynamic addresses or routes are not configured.", __func__); | |
1115 | return; | |
1116 | } | |
1117 | ||
d98c546d | 1118 | log_link_debug(link, "%s(): dhcp4:%s dhcp6_addresses:%s dhcp_routes:%s dhcp_pd_addresses:%s dhcp_pd_routes:%s ndisc_addresses:%s ndisc_routes:%s", |
39373cb9 YW |
1119 | __func__, |
1120 | yes_no(link->dhcp4_configured), | |
1121 | yes_no(link->dhcp6_address_configured), | |
1122 | yes_no(link->dhcp6_route_configured), | |
1123 | yes_no(link->dhcp6_pd_address_configured), | |
1124 | yes_no(link->dhcp6_pd_route_configured), | |
d98c546d YW |
1125 | yes_no(link->ndisc_addresses_configured), |
1126 | yes_no(link->ndisc_routes_configured)); | |
39373cb9 | 1127 | } |
463797c1 | 1128 | } |
6accfd31 | 1129 | |
5f58af25 | 1130 | link_enter_configured(link); |
6accfd31 DA |
1131 | |
1132 | return; | |
1133 | } | |
1134 | ||
e5526518 YW |
1135 | static int static_address_ready_callback(Address *address) { |
1136 | Address *a; | |
e5526518 YW |
1137 | Link *link; |
1138 | ||
1139 | assert(address); | |
1140 | assert(address->link); | |
1141 | ||
1142 | link = address->link; | |
1143 | ||
1144 | if (!link->addresses_configured) | |
1145 | return 0; | |
1146 | ||
90e74a66 | 1147 | SET_FOREACH(a, link->static_addresses) |
e5526518 YW |
1148 | if (!address_is_ready(a)) { |
1149 | _cleanup_free_ char *str = NULL; | |
1150 | ||
1151 | (void) in_addr_to_string(a->family, &a->in_addr, &str); | |
1152 | log_link_debug(link, "an address %s/%u is not ready", strnull(str), a->prefixlen); | |
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | /* This should not be called again */ | |
90e74a66 | 1157 | SET_FOREACH(a, link->static_addresses) |
e5526518 YW |
1158 | a->callback = NULL; |
1159 | ||
1160 | link->addresses_ready = true; | |
1161 | ||
1162 | return link_request_set_routes(link); | |
1163 | } | |
1164 | ||
3650173f | 1165 | static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
f882c247 TG |
1166 | int r; |
1167 | ||
4958aee4 | 1168 | assert(rtnl); |
f5be5601 TG |
1169 | assert(m); |
1170 | assert(link); | |
1171 | assert(link->ifname); | |
7715629e | 1172 | assert(link->address_messages > 0); |
289e6774 | 1173 | assert(IN_SET(link->state, LINK_STATE_CONFIGURING, |
370e9930 | 1174 | LINK_STATE_FAILED, LINK_STATE_LINGER)); |
f882c247 | 1175 | |
7715629e | 1176 | link->address_messages--; |
f882c247 | 1177 | |
5da8149f | 1178 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
f882c247 TG |
1179 | return 1; |
1180 | ||
1c4baffc | 1181 | r = sd_netlink_message_get_errno(m); |
4ff296b0 | 1182 | if (r < 0 && r != -EEXIST) { |
5ecb131d | 1183 | log_link_message_warning_errno(link, m, r, "Could not set address"); |
4ff296b0 YW |
1184 | link_enter_failed(link); |
1185 | return 1; | |
1186 | } else if (r >= 0) | |
1187 | (void) manager_rtnl_process_address(rtnl, m, link->manager); | |
f882c247 | 1188 | |
7715629e | 1189 | if (link->address_messages == 0) { |
e5526518 YW |
1190 | Address *a; |
1191 | ||
6a7a4e4d | 1192 | log_link_debug(link, "Addresses set"); |
c42ff3a1 | 1193 | link->addresses_configured = true; |
e5526518 YW |
1194 | |
1195 | /* When all static addresses are already ready, then static_address_ready_callback() | |
1196 | * will not be called automatically. So, call it here. */ | |
1197 | a = set_first(link->static_addresses); | |
1198 | if (!a) { | |
1199 | log_link_warning(link, "No static address is stored."); | |
1200 | link_enter_failed(link); | |
1201 | return 1; | |
1202 | } | |
1203 | if (!a->callback) { | |
1204 | log_link_warning(link, "Address ready callback is not set."); | |
1205 | link_enter_failed(link); | |
1206 | return 1; | |
1207 | } | |
1208 | r = a->callback(a); | |
1209 | if (r < 0) | |
1210 | link_enter_failed(link); | |
dd3efc09 | 1211 | } |
f882c247 TG |
1212 | |
1213 | return 1; | |
1214 | } | |
1215 | ||
e5526518 YW |
1216 | static int static_address_configure(Address *address, Link *link, bool update) { |
1217 | Address *ret; | |
197e2809 | 1218 | int r; |
f6bb7ac5 | 1219 | |
e5526518 YW |
1220 | assert(address); |
1221 | assert(link); | |
1222 | ||
1223 | r = address_configure(address, link, address_handler, update, &ret); | |
1224 | if (r < 0) | |
1225 | return log_link_warning_errno(link, r, "Could not configure static address: %m"); | |
1226 | ||
1227 | link->address_messages++; | |
1228 | ||
1229 | r = set_ensure_put(&link->static_addresses, &address_hash_ops, ret); | |
1230 | if (r < 0) | |
1231 | return log_link_warning_errno(link, r, "Failed to store static address: %m"); | |
1232 | ||
1233 | ret->callback = static_address_ready_callback; | |
f6bb7ac5 | 1234 | |
197e2809 | 1235 | return 0; |
f6bb7ac5 TJ |
1236 | } |
1237 | ||
289e6774 | 1238 | static int link_request_set_addresses(Link *link) { |
a6cc569e | 1239 | Address *ad; |
bd6379ec | 1240 | Prefix *p; |
f882c247 TG |
1241 | int r; |
1242 | ||
1243 | assert(link); | |
1244 | assert(link->network); | |
f5be5601 | 1245 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 1246 | |
9b966cee YW |
1247 | if (link->address_remove_messages != 0) { |
1248 | log_link_debug(link, "Removing old addresses, new addresses will be configured later."); | |
1249 | link->request_static_addresses = true; | |
1250 | return 0; | |
1251 | } | |
1252 | ||
2428613f | 1253 | /* Reset all *_configured flags we are configuring. */ |
9b966cee | 1254 | link->request_static_addresses = false; |
2428613f | 1255 | link->addresses_configured = false; |
6aa5773b | 1256 | link->addresses_ready = false; |
2428613f YW |
1257 | link->neighbors_configured = false; |
1258 | link->static_routes_configured = false; | |
c16c7808 | 1259 | link->static_nexthops_configured = false; |
2428613f YW |
1260 | link->routing_policy_rules_configured = false; |
1261 | ||
f6bb7ac5 TJ |
1262 | r = link_set_bridge_fdb(link); |
1263 | if (r < 0) | |
1264 | return r; | |
1265 | ||
1f241589 YW |
1266 | r = link_set_bridge_mdb(link); |
1267 | if (r < 0) | |
1268 | return r; | |
1269 | ||
58f1fe9a | 1270 | r = link_set_neighbors(link); |
f3ef324d YW |
1271 | if (r < 0) |
1272 | return r; | |
e4a71bf3 | 1273 | |
3d3d4255 | 1274 | LIST_FOREACH(addresses, ad, link->network->static_addresses) { |
a47a6dae YW |
1275 | bool update; |
1276 | ||
6f5d73ab YW |
1277 | if (ad->family == AF_INET6 && !in_addr_is_null(ad->family, &ad->in_addr_peer)) |
1278 | update = address_get(link, ad->family, &ad->in_addr_peer, ad->prefixlen, NULL) > 0; | |
1279 | else | |
1280 | update = address_get(link, ad->family, &ad->in_addr, ad->prefixlen, NULL) > 0; | |
a47a6dae | 1281 | |
e5526518 | 1282 | r = static_address_configure(ad, link, update); |
4ff296b0 | 1283 | if (r < 0) |
e5526518 | 1284 | return r; |
95b74ef6 SS |
1285 | } |
1286 | ||
61c0ef4f | 1287 | if (link->network->router_prefix_delegation & RADV_PREFIX_DELEGATION_STATIC) |
bd6379ec SS |
1288 | LIST_FOREACH(prefixes, p, link->network->static_prefixes) { |
1289 | _cleanup_(address_freep) Address *address = NULL; | |
1290 | ||
1291 | if (!p->assign) | |
1292 | continue; | |
1293 | ||
1294 | r = address_new(&address); | |
1295 | if (r < 0) | |
e5526518 | 1296 | return log_oom(); |
bd6379ec SS |
1297 | |
1298 | r = sd_radv_prefix_get_prefix(p->radv_prefix, &address->in_addr.in6, &address->prefixlen); | |
1299 | if (r < 0) | |
e5526518 | 1300 | return log_link_warning_errno(link, r, "Could not get RA prefix: %m"); |
bd6379ec SS |
1301 | |
1302 | r = generate_ipv6_eui_64_address(link, &address->in_addr.in6); | |
1303 | if (r < 0) | |
e5526518 | 1304 | return log_link_warning_errno(link, r, "Could not generate EUI64 address: %m"); |
bd6379ec SS |
1305 | |
1306 | address->family = AF_INET6; | |
e5526518 | 1307 | r = static_address_configure(address, link, true); |
bd6379ec | 1308 | if (r < 0) |
e5526518 | 1309 | return r; |
bd6379ec SS |
1310 | } |
1311 | ||
fe2bc17c YW |
1312 | r = link_set_address_labels(link); |
1313 | if (r < 0) | |
1314 | return r; | |
f882c247 | 1315 | |
e5526518 | 1316 | /* now that we can figure out a default address for the dhcp server, start it */ |
708c425d | 1317 | if (link_dhcp4_server_enabled(link) && (link->flags & IFF_UP)) { |
8fcf1d61 | 1318 | r = dhcp4_server_configure(link); |
4ff296b0 | 1319 | if (r < 0) |
d4cdbea5 | 1320 | return r; |
6a7a4e4d | 1321 | log_link_debug(link, "Offering DHCPv4 leases"); |
d4cdbea5 TG |
1322 | } |
1323 | ||
c42ff3a1 WKI |
1324 | if (link->address_messages == 0) { |
1325 | link->addresses_configured = true; | |
e5526518 YW |
1326 | link->addresses_ready = true; |
1327 | r = link_request_set_routes(link); | |
1328 | if (r < 0) | |
1329 | return r; | |
b425c3ae | 1330 | } else { |
6a7a4e4d | 1331 | log_link_debug(link, "Setting addresses"); |
b425c3ae YW |
1332 | link_set_state(link, LINK_STATE_CONFIGURING); |
1333 | } | |
431ca2ce | 1334 | |
f882c247 TG |
1335 | return 0; |
1336 | } | |
1337 | ||
13b498f9 | 1338 | static int link_set_bridge_vlan(Link *link) { |
86e2be7b | 1339 | int r; |
13b498f9 TJ |
1340 | |
1341 | r = br_vlan_configure(link, link->network->pvid, link->network->br_vid_bitmap, link->network->br_untagged_bitmap); | |
1342 | if (r < 0) | |
1343 | log_link_error_errno(link, r, "Failed to assign VLANs to bridge port: %m"); | |
1344 | ||
1345 | return r; | |
1346 | } | |
1347 | ||
a60a720c | 1348 | static int link_set_proxy_arp(Link *link) { |
23d8b221 SS |
1349 | int r; |
1350 | ||
1351 | if (!link_proxy_arp_enabled(link)) | |
1352 | return 0; | |
1353 | ||
62e021a9 | 1354 | r = sysctl_write_ip_property_boolean(AF_INET, link->ifname, "proxy_arp", link->network->proxy_arp > 0); |
23d8b221 SS |
1355 | if (r < 0) |
1356 | log_link_warning_errno(link, r, "Cannot configure proxy ARP for interface: %m"); | |
1357 | ||
1358 | return 0; | |
1359 | } | |
1360 | ||
3a390124 | 1361 | static int link_configure_continue(Link *link); |
55dc8c4a | 1362 | |
302a796f | 1363 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4f882b2a TG |
1364 | int r; |
1365 | ||
1366 | assert(m); | |
1367 | assert(link); | |
1368 | assert(link->ifname); | |
1369 | ||
55dc8c4a YW |
1370 | link->setting_mtu = false; |
1371 | ||
5da8149f | 1372 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1373 | return 1; |
1374 | ||
1c4baffc | 1375 | r = sd_netlink_message_get_errno(m); |
4ff296b0 | 1376 | if (r < 0) |
5ecb131d | 1377 | log_link_message_warning_errno(link, m, r, "Could not set MTU, ignoring"); |
4ff296b0 YW |
1378 | else |
1379 | log_link_debug(link, "Setting MTU done."); | |
55dc8c4a | 1380 | |
4ff296b0 | 1381 | if (link->state == LINK_STATE_INITIALIZED) { |
3a390124 | 1382 | r = link_configure_continue(link); |
4ff296b0 YW |
1383 | if (r < 0) |
1384 | link_enter_failed(link); | |
1385 | } | |
4f882b2a TG |
1386 | |
1387 | return 1; | |
1388 | } | |
1389 | ||
933c70a0 | 1390 | int link_set_mtu(Link *link, uint32_t mtu) { |
4afd3348 | 1391 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f882b2a TG |
1392 | int r; |
1393 | ||
1394 | assert(link); | |
1395 | assert(link->manager); | |
1396 | assert(link->manager->rtnl); | |
1397 | ||
40288ece YW |
1398 | if (mtu == 0 || link->setting_mtu) |
1399 | return 0; | |
1400 | ||
933c70a0 | 1401 | if (link->mtu == mtu) |
ee493106 YW |
1402 | return 0; |
1403 | ||
6a7a4e4d | 1404 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1405 | |
6a7a4e4d LP |
1406 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1407 | if (r < 0) | |
1408 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1409 | |
44b598a1 | 1410 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes |
72c2500b YW |
1411 | * on the interface. Bump up MTU bytes to IPV6_MTU_MIN. */ |
1412 | if (link_ipv6_enabled(link) && mtu < IPV6_MIN_MTU) { | |
44b598a1 SS |
1413 | |
1414 | log_link_warning(link, "Bumping MTU to " STRINGIFY(IPV6_MIN_MTU) ", as " | |
d236718c | 1415 | "IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes"); |
44b598a1 | 1416 | |
72c2500b | 1417 | mtu = IPV6_MIN_MTU; |
44b598a1 SS |
1418 | } |
1419 | ||
1c4baffc | 1420 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1421 | if (r < 0) |
1422 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1423 | |
302a796f YW |
1424 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_mtu_handler, |
1425 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1426 | if (r < 0) |
1427 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1428 | |
ae941762 | 1429 | link_ref(link); |
1046bf9b | 1430 | link->setting_mtu = true; |
b226d99b | 1431 | |
4f882b2a TG |
1432 | return 0; |
1433 | } | |
1434 | ||
f6fcc1c2 YW |
1435 | static bool link_reduces_vlan_mtu(Link *link) { |
1436 | /* See netif_reduces_vlan_mtu() in kernel. */ | |
1437 | return streq_ptr(link->kind, "macsec"); | |
1438 | } | |
1439 | ||
1440 | static uint32_t link_get_requested_mtu_by_stacked_netdevs(Link *link) { | |
1441 | uint32_t mtu = 0; | |
1442 | NetDev *dev; | |
f6fcc1c2 | 1443 | |
90e74a66 | 1444 | HASHMAP_FOREACH(dev, link->network->stacked_netdevs) |
f6fcc1c2 YW |
1445 | if (dev->kind == NETDEV_KIND_VLAN && dev->mtu > 0) |
1446 | /* See vlan_dev_change_mtu() in kernel. */ | |
1447 | mtu = MAX(mtu, link_reduces_vlan_mtu(link) ? dev->mtu + 4 : dev->mtu); | |
1448 | ||
1449 | else if (dev->kind == NETDEV_KIND_MACVLAN && dev->mtu > mtu) | |
1450 | /* See macvlan_change_mtu() in kernel. */ | |
1451 | mtu = dev->mtu; | |
1452 | ||
1453 | return mtu; | |
1454 | } | |
1455 | ||
1456 | static int link_configure_mtu(Link *link) { | |
1457 | uint32_t mtu; | |
1458 | ||
1459 | assert(link); | |
1460 | assert(link->network); | |
1461 | ||
1462 | if (link->network->mtu > 0) | |
1463 | return link_set_mtu(link, link->network->mtu); | |
1464 | ||
1465 | mtu = link_get_requested_mtu_by_stacked_netdevs(link); | |
1466 | if (link->mtu >= mtu) | |
1467 | return 0; | |
1468 | ||
1469 | log_link_notice(link, "Bumping MTU bytes from %"PRIu32" to %"PRIu32" because of stacked device. " | |
1470 | "If it is not desired, then please explicitly specify MTUBytes= setting.", | |
1471 | link->mtu, mtu); | |
1472 | ||
1473 | return link_set_mtu(link, mtu); | |
1474 | } | |
1475 | ||
302a796f | 1476 | static int set_flags_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
99d2baa2 SS |
1477 | int r; |
1478 | ||
1479 | assert(m); | |
1480 | assert(link); | |
1481 | assert(link->ifname); | |
1482 | ||
1483 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1484 | return 1; | |
1485 | ||
1486 | r = sd_netlink_message_get_errno(m); | |
1487 | if (r < 0) | |
5ecb131d | 1488 | log_link_message_warning_errno(link, m, r, "Could not set link flags, ignoring"); |
99d2baa2 SS |
1489 | |
1490 | return 1; | |
1491 | } | |
1492 | ||
1493 | static int link_set_flags(Link *link) { | |
1494 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1495 | unsigned ifi_change = 0; | |
1496 | unsigned ifi_flags = 0; | |
1497 | int r; | |
1498 | ||
1499 | assert(link); | |
1500 | assert(link->manager); | |
1501 | assert(link->manager->rtnl); | |
1502 | ||
1503 | if (link->flags & IFF_LOOPBACK) | |
1504 | return 0; | |
1505 | ||
1506 | if (!link->network) | |
1507 | return 0; | |
1508 | ||
866e6b7a | 1509 | if (link->network->arp < 0 && link->network->multicast < 0 && link->network->allmulticast < 0) |
99d2baa2 SS |
1510 | return 0; |
1511 | ||
1512 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1513 | if (r < 0) | |
1514 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1515 | ||
1516 | if (link->network->arp >= 0) { | |
1517 | ifi_change |= IFF_NOARP; | |
e6ebebbe SS |
1518 | SET_FLAG(ifi_flags, IFF_NOARP, link->network->arp == 0); |
1519 | } | |
1520 | ||
1521 | if (link->network->multicast >= 0) { | |
1522 | ifi_change |= IFF_MULTICAST; | |
1523 | SET_FLAG(ifi_flags, IFF_MULTICAST, link->network->multicast); | |
99d2baa2 SS |
1524 | } |
1525 | ||
866e6b7a SS |
1526 | if (link->network->allmulticast >= 0) { |
1527 | ifi_change |= IFF_ALLMULTI; | |
1528 | SET_FLAG(ifi_flags, IFF_ALLMULTI, link->network->allmulticast); | |
1529 | } | |
1530 | ||
99d2baa2 SS |
1531 | r = sd_rtnl_message_link_set_flags(req, ifi_flags, ifi_change); |
1532 | if (r < 0) | |
1533 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
1534 | ||
302a796f YW |
1535 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_flags_handler, |
1536 | link_netlink_destroy_callback, link); | |
99d2baa2 SS |
1537 | if (r < 0) |
1538 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1539 | ||
1540 | link_ref(link); | |
1541 | ||
1542 | return 0; | |
1543 | } | |
1544 | ||
e7ab854c TG |
1545 | static int link_acquire_ipv6_conf(Link *link) { |
1546 | int r; | |
1547 | ||
1548 | assert(link); | |
1549 | ||
e7ab854c | 1550 | if (link_ipv6_accept_ra_enabled(link)) { |
1e7a0e21 | 1551 | assert(link->ndisc); |
e7ab854c TG |
1552 | |
1553 | log_link_debug(link, "Discovering IPv6 routers"); | |
1554 | ||
1e7a0e21 | 1555 | r = sd_ndisc_start(link->ndisc); |
63348d13 | 1556 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1557 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
1558 | } | |
1559 | ||
7465dd22 PF |
1560 | if (link_radv_enabled(link)) { |
1561 | assert(link->radv); | |
1562 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); | |
1563 | ||
1564 | log_link_debug(link, "Starting IPv6 Router Advertisements"); | |
1565 | ||
fd3ef936 YW |
1566 | r = radv_emit_dns(link); |
1567 | if (r < 0) | |
1568 | return log_link_warning_errno(link, r, "Failed to configure DNS or Domains in IPv6 Router Advertisement: %m"); | |
1569 | ||
7465dd22 PF |
1570 | r = sd_radv_start(link->radv); |
1571 | if (r < 0 && r != -EBUSY) | |
1572 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Advertisement: %m"); | |
1573 | } | |
1574 | ||
838d39af SS |
1575 | if (link_dhcp6_enabled(link) && IN_SET(link->network->dhcp6_without_ra, |
1576 | DHCP6_CLIENT_START_MODE_INFORMATION_REQUEST, | |
1577 | DHCP6_CLIENT_START_MODE_SOLICIT)) { | |
cd305af1 SS |
1578 | assert(link->dhcp6_client); |
1579 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); | |
1580 | ||
838d39af | 1581 | r = dhcp6_request_address(link, link->network->dhcp6_without_ra == DHCP6_CLIENT_START_MODE_INFORMATION_REQUEST); |
cd305af1 | 1582 | if (r < 0 && r != -EBUSY) |
1633c457 | 1583 | return log_link_warning_errno(link, r, "Could not acquire DHCPv6 lease: %m"); |
cd305af1 SS |
1584 | else |
1585 | log_link_debug(link, "Acquiring DHCPv6 lease"); | |
1586 | } | |
1587 | ||
1633c457 YW |
1588 | r = dhcp6_request_prefix_delegation(link); |
1589 | if (r < 0) | |
1590 | return log_link_warning_errno(link, r, "Failed to request DHCPv6 prefix delegation: %m"); | |
10752343 | 1591 | |
e7ab854c TG |
1592 | return 0; |
1593 | } | |
1594 | ||
6fc25497 | 1595 | static int link_acquire_ipv4_conf(Link *link) { |
ff254138 TG |
1596 | int r; |
1597 | ||
1598 | assert(link); | |
ff254138 TG |
1599 | assert(link->manager); |
1600 | assert(link->manager->event); | |
1601 | ||
910feb78 | 1602 | if (link_ipv4ll_enabled(link, ADDRESS_FAMILY_IPV4)) { |
eb34d4af | 1603 | assert(link->ipv4ll); |
ff254138 | 1604 | |
6a7a4e4d | 1605 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1606 | |
1607 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1608 | if (r < 0) |
1609 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1610 | } |
1611 | ||
78c958f8 | 1612 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1613 | assert(link->dhcp_client); |
ff254138 | 1614 | |
6a7a4e4d | 1615 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1616 | |
5c1d3fc9 | 1617 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1618 | if (r < 0) |
1619 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1620 | } |
ff254138 | 1621 | |
6fc25497 SS |
1622 | return 0; |
1623 | } | |
1624 | ||
1625 | static int link_acquire_conf(Link *link) { | |
1626 | int r; | |
1627 | ||
1628 | assert(link); | |
1629 | ||
1630 | r = link_acquire_ipv4_conf(link); | |
1631 | if (r < 0) | |
1632 | return r; | |
1633 | ||
3f7cc080 | 1634 | if (!in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) { |
6fc25497 SS |
1635 | r = link_acquire_ipv6_conf(link); |
1636 | if (r < 0) | |
1637 | return r; | |
1638 | } | |
1639 | ||
7272b25e LP |
1640 | if (link_lldp_emit_enabled(link)) { |
1641 | r = link_lldp_emit_start(link); | |
8e1ad1ea LP |
1642 | if (r < 0) |
1643 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
1644 | } | |
1645 | ||
ff254138 TG |
1646 | return 0; |
1647 | } | |
1648 | ||
a61bb41c | 1649 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1650 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1651 | ||
a61bb41c | 1652 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1653 | return true; |
1654 | ||
a61bb41c | 1655 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1656 | /* operstate may not be implemented, so fall back to flags */ |
b26ea308 YW |
1657 | if (FLAGS_SET(link->flags, IFF_LOWER_UP | IFF_RUNNING) && |
1658 | !FLAGS_SET(link->flags, IFF_DORMANT)) | |
deb2e523 TG |
1659 | return true; |
1660 | ||
1661 | return false; | |
1662 | } | |
1663 | ||
0e2fdb83 SS |
1664 | static int link_address_genmode_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1665 | int r; | |
1666 | ||
1667 | assert(link); | |
1668 | ||
9524014e DS |
1669 | link->setting_genmode = false; |
1670 | ||
0e2fdb83 SS |
1671 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1672 | return 1; | |
1673 | ||
1674 | r = sd_netlink_message_get_errno(m); | |
1675 | if (r < 0) | |
5ecb131d | 1676 | log_link_message_warning_errno(link, m, r, "Could not set address genmode for interface, ignoring"); |
9524014e DS |
1677 | else |
1678 | log_link_debug(link, "Setting address genmode done."); | |
1679 | ||
1680 | if (link->state == LINK_STATE_INITIALIZED) { | |
1681 | r = link_configure_continue(link); | |
1682 | if (r < 0) | |
1683 | link_enter_failed(link); | |
1684 | } | |
0e2fdb83 SS |
1685 | |
1686 | return 1; | |
1687 | } | |
1688 | ||
1689 | static int link_configure_addrgen_mode(Link *link) { | |
1690 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1691 | uint8_t ipv6ll_mode; | |
1692 | int r; | |
1693 | ||
1694 | assert(link); | |
1695 | assert(link->network); | |
1696 | assert(link->manager); | |
1697 | assert(link->manager->rtnl); | |
1698 | ||
9524014e | 1699 | if (!socket_ipv6_is_supported() || link->setting_genmode) |
9f6e82e6 YW |
1700 | return 0; |
1701 | ||
0e2fdb83 SS |
1702 | log_link_debug(link, "Setting address genmode for link"); |
1703 | ||
1704 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1705 | if (r < 0) | |
1706 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1707 | ||
1708 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); | |
1709 | if (r < 0) | |
1710 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
1711 | ||
1712 | r = sd_netlink_message_open_container(req, AF_INET6); | |
1713 | if (r < 0) | |
1714 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
1715 | ||
1716 | if (!link_ipv6ll_enabled(link)) | |
1717 | ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE; | |
6f6296b9 | 1718 | else if (link->network->ipv6ll_address_gen_mode < 0) { |
a6f1848a SS |
1719 | r = sysctl_read_ip_property(AF_INET6, link->ifname, "stable_secret", NULL); |
1720 | if (r < 0) { | |
1721 | /* The file may not exist. And even if it exists, when stable_secret is unset, | |
1722 | * reading the file fails with EIO. */ | |
1723 | log_link_debug_errno(link, r, "Failed to read sysctl property stable_secret: %m"); | |
1724 | ||
1725 | ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64; | |
1726 | } else | |
1727 | ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
1728 | } else | |
6f6296b9 | 1729 | ipv6ll_mode = link->network->ipv6ll_address_gen_mode; |
0e2fdb83 SS |
1730 | |
1731 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); | |
1732 | if (r < 0) | |
1733 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
1734 | ||
1735 | r = sd_netlink_message_close_container(req); | |
1736 | if (r < 0) | |
1737 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); | |
1738 | ||
1739 | r = sd_netlink_message_close_container(req); | |
1740 | if (r < 0) | |
1741 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
1742 | ||
1743 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_address_genmode_handler, | |
1744 | link_netlink_destroy_callback, link); | |
1745 | if (r < 0) | |
1746 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1747 | ||
1748 | link_ref(link); | |
9524014e | 1749 | link->setting_genmode = true; |
0e2fdb83 SS |
1750 | |
1751 | return 0; | |
1752 | } | |
1753 | ||
302a796f | 1754 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
dd3efc09 TG |
1755 | int r; |
1756 | ||
1746cf2a TG |
1757 | assert(link); |
1758 | ||
5da8149f | 1759 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1760 | return 1; |
1761 | ||
1c4baffc | 1762 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d | 1763 | if (r < 0) |
26d6b214 | 1764 | /* we warn but don't fail the link, as it may be brought up later */ |
5ecb131d | 1765 | log_link_message_warning_errno(link, m, r, "Could not bring up interface"); |
45ad2c13 | 1766 | |
f882c247 TG |
1767 | return 1; |
1768 | } | |
1769 | ||
1cc84f3b | 1770 | static int link_up(Link *link) { |
4afd3348 | 1771 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
f579559b TG |
1772 | int r; |
1773 | ||
f882c247 | 1774 | assert(link); |
c106cc36 | 1775 | assert(link->network); |
f882c247 TG |
1776 | assert(link->manager); |
1777 | assert(link->manager->rtnl); | |
1778 | ||
6a7a4e4d | 1779 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1780 | |
6a7a4e4d LP |
1781 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1782 | if (r < 0) | |
1783 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1784 | |
2b2d8603 | 1785 | /* set it free if not enslaved with networkd */ |
6cb955c6 | 1786 | if (!link->network->bridge && !link->network->bond && !link->network->vrf) { |
2b2d8603 TY |
1787 | r = sd_netlink_message_append_u32(req, IFLA_MASTER, 0); |
1788 | if (r < 0) | |
1789 | return log_link_error_errno(link, r, "Could not append IFLA_MASTER attribute: %m"); | |
1790 | } | |
1791 | ||
5d4795f3 | 1792 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1793 | if (r < 0) |
1794 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1795 | |
c106cc36 | 1796 | if (link->network->mac) { |
1c4baffc | 1797 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1798 | if (r < 0) |
1799 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1800 | } |
1801 | ||
302a796f YW |
1802 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_up_handler, |
1803 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1804 | if (r < 0) |
1805 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1806 | |
b226d99b TG |
1807 | link_ref(link); |
1808 | ||
f882c247 TG |
1809 | return 0; |
1810 | } | |
1811 | ||
302a796f | 1812 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
0d4ad91d AR |
1813 | int r; |
1814 | ||
1815 | assert(link); | |
1816 | ||
1817 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1818 | return 1; | |
1819 | ||
1c4baffc | 1820 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1821 | if (r < 0) |
5ecb131d | 1822 | log_link_message_warning_errno(link, m, r, "Could not bring down interface"); |
0d4ad91d AR |
1823 | |
1824 | return 1; | |
1825 | } | |
1826 | ||
8e54db83 | 1827 | int link_down(Link *link, link_netlink_message_handler_t callback) { |
4afd3348 | 1828 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
0d4ad91d AR |
1829 | int r; |
1830 | ||
1831 | assert(link); | |
1832 | assert(link->manager); | |
1833 | assert(link->manager->rtnl); | |
1834 | ||
6a7a4e4d | 1835 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1836 | |
1837 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1838 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1839 | if (r < 0) |
1840 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1841 | |
1842 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1843 | if (r < 0) |
1844 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1845 | |
8e54db83 YW |
1846 | r = netlink_call_async(link->manager->rtnl, NULL, req, |
1847 | callback ?: link_down_handler, | |
302a796f | 1848 | link_netlink_destroy_callback, link); |
6a7a4e4d LP |
1849 | if (r < 0) |
1850 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1851 | |
1852 | link_ref(link); | |
1853 | ||
1854 | return 0; | |
1855 | } | |
1856 | ||
89fe6535 SS |
1857 | static int link_group_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1858 | int r; | |
1859 | ||
1860 | assert(link); | |
1861 | ||
1862 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1863 | return 1; | |
1864 | ||
1865 | r = sd_netlink_message_get_errno(m); | |
1866 | if (r < 0) | |
1867 | log_link_message_warning_errno(link, m, r, "Could not set group for the interface"); | |
1868 | ||
1869 | return 1; | |
1870 | } | |
1871 | ||
1872 | static int link_set_group(Link *link) { | |
1873 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1874 | int r; | |
1875 | ||
1876 | assert(link); | |
1877 | assert(link->network); | |
1878 | assert(link->manager); | |
1879 | assert(link->manager->rtnl); | |
1880 | ||
1881 | if (link->network->group <= 0) | |
1882 | return 0; | |
1883 | ||
1884 | log_link_debug(link, "Setting group"); | |
1885 | ||
1886 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1887 | if (r < 0) | |
1888 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1889 | ||
1890 | r = sd_netlink_message_append_u32(req, IFLA_GROUP, link->network->group); | |
1891 | if (r < 0) | |
1892 | return log_link_error_errno(link, r, "Could not set link group: %m"); | |
1893 | ||
1894 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_group_handler, | |
1895 | link_netlink_destroy_callback, link); | |
1896 | if (r < 0) | |
1897 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1898 | ||
1899 | link_ref(link); | |
1900 | ||
1901 | return 0; | |
1902 | } | |
1903 | ||
0d4ad91d AR |
1904 | static int link_handle_bound_to_list(Link *link) { |
1905 | Link *l; | |
0d4ad91d AR |
1906 | int r; |
1907 | bool required_up = false; | |
1908 | bool link_is_up = false; | |
1909 | ||
1910 | assert(link); | |
1911 | ||
1912 | if (hashmap_isempty(link->bound_to_links)) | |
1913 | return 0; | |
1914 | ||
1915 | if (link->flags & IFF_UP) | |
1916 | link_is_up = true; | |
1917 | ||
90e74a66 | 1918 | HASHMAP_FOREACH (l, link->bound_to_links) |
0d4ad91d AR |
1919 | if (link_has_carrier(l)) { |
1920 | required_up = true; | |
1921 | break; | |
1922 | } | |
1923 | ||
1924 | if (!required_up && link_is_up) { | |
8e54db83 | 1925 | r = link_down(link, NULL); |
0d4ad91d AR |
1926 | if (r < 0) |
1927 | return r; | |
1928 | } else if (required_up && !link_is_up) { | |
1929 | r = link_up(link); | |
1930 | if (r < 0) | |
1931 | return r; | |
1932 | } | |
1933 | ||
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | static int link_handle_bound_by_list(Link *link) { | |
0d4ad91d AR |
1938 | Link *l; |
1939 | int r; | |
1940 | ||
1941 | assert(link); | |
1942 | ||
1943 | if (hashmap_isempty(link->bound_by_links)) | |
1944 | return 0; | |
1945 | ||
90e74a66 | 1946 | HASHMAP_FOREACH (l, link->bound_by_links) { |
0d4ad91d AR |
1947 | r = link_handle_bound_to_list(l); |
1948 | if (r < 0) | |
1949 | return r; | |
1950 | } | |
1951 | ||
1952 | return 0; | |
1953 | } | |
1954 | ||
1955 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1956 | int r; | |
1957 | ||
1958 | assert(link); | |
1959 | assert(carrier); | |
1960 | ||
1961 | if (link == carrier) | |
1962 | return 0; | |
1963 | ||
1964 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1965 | return 0; | |
1966 | ||
1967 | r = hashmap_ensure_allocated(h, NULL); | |
1968 | if (r < 0) | |
1969 | return r; | |
1970 | ||
1971 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1972 | if (r < 0) | |
1973 | return r; | |
1974 | ||
1975 | return 0; | |
1976 | } | |
1977 | ||
1978 | static int link_new_bound_by_list(Link *link) { | |
1979 | Manager *m; | |
1980 | Link *carrier; | |
0d4ad91d AR |
1981 | int r; |
1982 | bool list_updated = false; | |
1983 | ||
1984 | assert(link); | |
1985 | assert(link->manager); | |
1986 | ||
1987 | m = link->manager; | |
1988 | ||
90e74a66 | 1989 | HASHMAP_FOREACH(carrier, m->links) { |
0d4ad91d AR |
1990 | if (!carrier->network) |
1991 | continue; | |
1992 | ||
1993 | if (strv_isempty(carrier->network->bind_carrier)) | |
1994 | continue; | |
1995 | ||
191a3f16 | 1996 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname)) { |
0d4ad91d AR |
1997 | r = link_put_carrier(link, carrier, &link->bound_by_links); |
1998 | if (r < 0) | |
1999 | return r; | |
2000 | ||
2001 | list_updated = true; | |
2002 | } | |
2003 | } | |
2004 | ||
2005 | if (list_updated) | |
84de38c5 | 2006 | link_dirty(link); |
0d4ad91d | 2007 | |
90e74a66 | 2008 | HASHMAP_FOREACH(carrier, link->bound_by_links) { |
0d4ad91d AR |
2009 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
2010 | if (r < 0) | |
2011 | return r; | |
2012 | ||
84de38c5 | 2013 | link_dirty(carrier); |
0d4ad91d AR |
2014 | } |
2015 | ||
2016 | return 0; | |
2017 | } | |
2018 | ||
2019 | static int link_new_bound_to_list(Link *link) { | |
2020 | Manager *m; | |
2021 | Link *carrier; | |
0d4ad91d AR |
2022 | int r; |
2023 | bool list_updated = false; | |
2024 | ||
2025 | assert(link); | |
2026 | assert(link->manager); | |
2027 | ||
2028 | if (!link->network) | |
2029 | return 0; | |
2030 | ||
2031 | if (strv_isempty(link->network->bind_carrier)) | |
2032 | return 0; | |
2033 | ||
2034 | m = link->manager; | |
2035 | ||
90e74a66 | 2036 | HASHMAP_FOREACH (carrier, m->links) { |
191a3f16 | 2037 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname)) { |
0d4ad91d AR |
2038 | r = link_put_carrier(link, carrier, &link->bound_to_links); |
2039 | if (r < 0) | |
2040 | return r; | |
2041 | ||
2042 | list_updated = true; | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | if (list_updated) | |
84de38c5 | 2047 | link_dirty(link); |
0d4ad91d | 2048 | |
90e74a66 | 2049 | HASHMAP_FOREACH (carrier, link->bound_to_links) { |
0d4ad91d AR |
2050 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); |
2051 | if (r < 0) | |
2052 | return r; | |
2053 | ||
84de38c5 | 2054 | link_dirty(carrier); |
0d4ad91d AR |
2055 | } |
2056 | ||
2057 | return 0; | |
2058 | } | |
2059 | ||
2060 | static int link_new_carrier_maps(Link *link) { | |
2061 | int r; | |
2062 | ||
2063 | r = link_new_bound_by_list(link); | |
2064 | if (r < 0) | |
2065 | return r; | |
2066 | ||
2067 | r = link_handle_bound_by_list(link); | |
2068 | if (r < 0) | |
2069 | return r; | |
2070 | ||
2071 | r = link_new_bound_to_list(link); | |
2072 | if (r < 0) | |
2073 | return r; | |
2074 | ||
2075 | r = link_handle_bound_to_list(link); | |
2076 | if (r < 0) | |
2077 | return r; | |
2078 | ||
2079 | return 0; | |
2080 | } | |
2081 | ||
2082 | static void link_free_bound_to_list(Link *link) { | |
2083 | Link *bound_to; | |
0d4ad91d | 2084 | |
90e74a66 | 2085 | HASHMAP_FOREACH (bound_to, link->bound_to_links) { |
0d4ad91d AR |
2086 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); |
2087 | ||
2088 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 2089 | link_dirty(bound_to); |
0d4ad91d AR |
2090 | } |
2091 | ||
2092 | return; | |
2093 | } | |
2094 | ||
2095 | static void link_free_bound_by_list(Link *link) { | |
2096 | Link *bound_by; | |
0d4ad91d | 2097 | |
90e74a66 | 2098 | HASHMAP_FOREACH (bound_by, link->bound_by_links) { |
0d4ad91d AR |
2099 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); |
2100 | ||
2101 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 2102 | link_dirty(bound_by); |
0d4ad91d AR |
2103 | link_handle_bound_to_list(bound_by); |
2104 | } | |
2105 | } | |
2106 | ||
2107 | return; | |
2108 | } | |
2109 | ||
2110 | static void link_free_carrier_maps(Link *link) { | |
2111 | bool list_updated = false; | |
2112 | ||
2113 | assert(link); | |
2114 | ||
2115 | if (!hashmap_isempty(link->bound_to_links)) { | |
2116 | link_free_bound_to_list(link); | |
2117 | list_updated = true; | |
2118 | } | |
2119 | ||
2120 | if (!hashmap_isempty(link->bound_by_links)) { | |
2121 | link_free_bound_by_list(link); | |
2122 | list_updated = true; | |
2123 | } | |
2124 | ||
2125 | if (list_updated) | |
84de38c5 | 2126 | link_dirty(link); |
0d4ad91d AR |
2127 | |
2128 | return; | |
2129 | } | |
2130 | ||
5f707e12 YW |
2131 | static int link_append_to_master(Link *link, NetDev *netdev) { |
2132 | Link *master; | |
2133 | int r; | |
2134 | ||
2135 | assert(link); | |
2136 | assert(netdev); | |
2137 | ||
2138 | r = link_get(link->manager, netdev->ifindex, &master); | |
2139 | if (r < 0) | |
2140 | return r; | |
2141 | ||
de7fef4b | 2142 | r = set_ensure_put(&master->slaves, NULL, link); |
38288f0b | 2143 | if (r <= 0) |
5f707e12 YW |
2144 | return r; |
2145 | ||
2146 | link_ref(link); | |
2147 | return 0; | |
2148 | } | |
2149 | ||
2150 | static void link_drop_from_master(Link *link, NetDev *netdev) { | |
2151 | Link *master; | |
2152 | ||
2153 | assert(link); | |
2154 | ||
2155 | if (!link->manager || !netdev) | |
2156 | return; | |
2157 | ||
2158 | if (link_get(link->manager, netdev->ifindex, &master) < 0) | |
2159 | return; | |
2160 | ||
2161 | link_unref(set_remove(master->slaves, link)); | |
2162 | } | |
2163 | ||
2164 | static void link_detach_from_manager(Link *link) { | |
2165 | if (!link || !link->manager) | |
2166 | return; | |
2167 | ||
2168 | link_unref(set_remove(link->manager->links_requesting_uuid, link)); | |
2169 | link_clean(link); | |
2170 | ||
2171 | /* The following must be called at last. */ | |
2172 | assert_se(hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)) == link); | |
2173 | link_unref(link); | |
2174 | } | |
2175 | ||
0d4ad91d AR |
2176 | void link_drop(Link *link) { |
2177 | if (!link || link->state == LINK_STATE_LINGER) | |
2178 | return; | |
2179 | ||
2180 | link_set_state(link, LINK_STATE_LINGER); | |
2181 | ||
2182 | link_free_carrier_maps(link); | |
2183 | ||
5f707e12 YW |
2184 | if (link->network) { |
2185 | link_drop_from_master(link, link->network->bridge); | |
2186 | link_drop_from_master(link, link->network->bond); | |
2187 | } | |
2188 | ||
6a7a4e4d | 2189 | log_link_debug(link, "Link removed"); |
0d4ad91d | 2190 | |
db2f8a2e | 2191 | (void) unlink(link->state_file); |
c4397d94 | 2192 | link_detach_from_manager(link); |
0d4ad91d AR |
2193 | } |
2194 | ||
3f265037 | 2195 | static int link_joined(Link *link) { |
f882c247 TG |
2196 | int r; |
2197 | ||
ef1ba606 | 2198 | assert(link); |
f5be5601 | 2199 | assert(link->network); |
dd3efc09 | 2200 | |
0d4ad91d AR |
2201 | if (!hashmap_isempty(link->bound_to_links)) { |
2202 | r = link_handle_bound_to_list(link); | |
2203 | if (r < 0) | |
2204 | return r; | |
2205 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
2206 | r = link_up(link); |
2207 | if (r < 0) { | |
2208 | link_enter_failed(link); | |
2209 | return r; | |
2210 | } | |
ef1ba606 | 2211 | } |
f882c247 | 2212 | |
9ed794a3 | 2213 | if (link->network->bridge) { |
e1853b00 | 2214 | r = link_set_bridge(link); |
6a7a4e4d LP |
2215 | if (r < 0) |
2216 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
45e11abf YW |
2217 | |
2218 | r = link_append_to_master(link, link->network->bridge); | |
2219 | if (r < 0) | |
2220 | log_link_error_errno(link, r, "Failed to add to bridge master's slave list: %m"); | |
e1853b00 SS |
2221 | } |
2222 | ||
eb64b435 | 2223 | if (link->network->bond) { |
7fcee284 | 2224 | r = link_set_bond(link); |
eb64b435 SS |
2225 | if (r < 0) |
2226 | log_link_error_errno(link, r, "Could not set bond message: %m"); | |
959f65d3 | 2227 | |
45e11abf | 2228 | r = link_append_to_master(link, link->network->bond); |
959f65d3 YW |
2229 | if (r < 0) |
2230 | log_link_error_errno(link, r, "Failed to add to bond master's slave list: %m"); | |
eb64b435 SS |
2231 | } |
2232 | ||
ffff9abe TJ |
2233 | if (link->network->use_br_vlan && |
2234 | (link->network->bridge || streq_ptr("bridge", link->kind))) { | |
13b498f9 TJ |
2235 | r = link_set_bridge_vlan(link); |
2236 | if (r < 0) | |
2237 | log_link_error_errno(link, r, "Could not set bridge vlan: %m"); | |
2238 | } | |
2239 | ||
c1835a42 RM |
2240 | /* Skip setting up addresses until it gets carrier, |
2241 | or it would try to set addresses twice, | |
2242 | which is bad for non-idempotent steps. */ | |
dad2d78e | 2243 | if (!link_has_carrier(link) && !link->network->configure_without_carrier) |
c1835a42 RM |
2244 | return 0; |
2245 | ||
b425c3ae | 2246 | link_set_state(link, LINK_STATE_CONFIGURING); |
289e6774 | 2247 | return link_request_set_addresses(link); |
02b59d57 TG |
2248 | } |
2249 | ||
302a796f | 2250 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
02b59d57 TG |
2251 | int r; |
2252 | ||
1746cf2a | 2253 | assert(link); |
ef1ba606 | 2254 | assert(link->network); |
34bf3c00 | 2255 | assert(link->enslaving > 0); |
02b59d57 | 2256 | |
313cefa1 | 2257 | link->enslaving--; |
52433f6b | 2258 | |
5da8149f | 2259 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
2260 | return 1; |
2261 | ||
1c4baffc | 2262 | r = sd_netlink_message_get_errno(m); |
856f962c | 2263 | if (r < 0 && r != -EEXIST) { |
5ecb131d | 2264 | log_link_message_warning_errno(link, m, r, "Could not join netdev"); |
ef1ba606 TG |
2265 | link_enter_failed(link); |
2266 | return 1; | |
4ff296b0 YW |
2267 | } |
2268 | ||
2269 | log_link_debug(link, "Joined netdev"); | |
02b59d57 | 2270 | |
34bf3c00 | 2271 | if (link->enslaving == 0) { |
4ff296b0 YW |
2272 | r = link_joined(link); |
2273 | if (r < 0) | |
2274 | link_enter_failed(link); | |
34bf3c00 | 2275 | } |
02b59d57 TG |
2276 | |
2277 | return 1; | |
2278 | } | |
2279 | ||
3f265037 | 2280 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 2281 | NetDev *netdev; |
02b59d57 TG |
2282 | int r; |
2283 | ||
2284 | assert(link); | |
2285 | assert(link->network); | |
bd08ce56 | 2286 | assert(link->state == LINK_STATE_INITIALIZED); |
02b59d57 | 2287 | |
289e6774 | 2288 | link_set_state(link, LINK_STATE_CONFIGURING); |
02b59d57 | 2289 | |
84de38c5 | 2290 | link_dirty(link); |
34bf3c00 | 2291 | link->enslaving = 0; |
02b59d57 | 2292 | |
d9c67ea1 | 2293 | if (link->network->bond) { |
cbff7170 TJ |
2294 | if (link->network->bond->state == NETDEV_STATE_READY && |
2295 | link->network->bond->ifindex == link->master_ifindex) | |
2296 | return link_joined(link); | |
2297 | ||
f2341e0a LP |
2298 | log_struct(LOG_DEBUG, |
2299 | LOG_LINK_INTERFACE(link), | |
2300 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 2301 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname)); |
f2341e0a | 2302 | |
34bf3c00 YW |
2303 | link->enslaving++; |
2304 | ||
f2341e0a | 2305 | r = netdev_join(link->network->bond, link, netdev_join_handler); |
52433f6b | 2306 | if (r < 0) { |
f2341e0a LP |
2307 | log_struct_errno(LOG_WARNING, r, |
2308 | LOG_LINK_INTERFACE(link), | |
2309 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 2310 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname)); |
52433f6b TG |
2311 | link_enter_failed(link); |
2312 | return r; | |
2313 | } | |
0ad6148e MO |
2314 | } |
2315 | ||
d9c67ea1 | 2316 | if (link->network->bridge) { |
f2341e0a LP |
2317 | log_struct(LOG_DEBUG, |
2318 | LOG_LINK_INTERFACE(link), | |
2319 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 2320 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname)); |
f2341e0a | 2321 | |
34bf3c00 YW |
2322 | link->enslaving++; |
2323 | ||
f2341e0a | 2324 | r = netdev_join(link->network->bridge, link, netdev_join_handler); |
0ad6148e | 2325 | if (r < 0) { |
f2341e0a LP |
2326 | log_struct_errno(LOG_WARNING, r, |
2327 | LOG_LINK_INTERFACE(link), | |
2328 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 2329 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname)); |
0ad6148e MO |
2330 | link_enter_failed(link); |
2331 | return r; | |
2332 | } | |
52433f6b TG |
2333 | } |
2334 | ||
6cb955c6 AR |
2335 | if (link->network->vrf) { |
2336 | log_struct(LOG_DEBUG, | |
2337 | LOG_LINK_INTERFACE(link), | |
2338 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 ZJS |
2339 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->vrf->ifname)); |
2340 | ||
34bf3c00 YW |
2341 | link->enslaving++; |
2342 | ||
6cb955c6 AR |
2343 | r = netdev_join(link->network->vrf, link, netdev_join_handler); |
2344 | if (r < 0) { | |
2345 | log_struct_errno(LOG_WARNING, r, | |
2346 | LOG_LINK_INTERFACE(link), | |
2347 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 | 2348 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->vrf->ifname)); |
6cb955c6 AR |
2349 | link_enter_failed(link); |
2350 | return r; | |
2351 | } | |
6cb955c6 AR |
2352 | } |
2353 | ||
90e74a66 | 2354 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
7951dea2 | 2355 | |
2b6db913 YW |
2356 | if (netdev->ifindex > 0) |
2357 | /* Assume already enslaved. */ | |
a63e5daa | 2358 | continue; |
a63e5daa | 2359 | |
7033af49 YW |
2360 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_STACKED) |
2361 | continue; | |
2362 | ||
f2341e0a LP |
2363 | log_struct(LOG_DEBUG, |
2364 | LOG_LINK_INTERFACE(link), | |
2365 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 2366 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); |
f2341e0a | 2367 | |
34bf3c00 YW |
2368 | link->enslaving++; |
2369 | ||
f2341e0a | 2370 | r = netdev_join(netdev, link, netdev_join_handler); |
7951dea2 | 2371 | if (r < 0) { |
f2341e0a LP |
2372 | log_struct_errno(LOG_WARNING, r, |
2373 | LOG_LINK_INTERFACE(link), | |
2374 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 2375 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); |
326cb406 SS |
2376 | link_enter_failed(link); |
2377 | return r; | |
2378 | } | |
326cb406 SS |
2379 | } |
2380 | ||
34bf3c00 YW |
2381 | if (link->enslaving == 0) |
2382 | return link_joined(link); | |
2383 | ||
ef1ba606 TG |
2384 | return 0; |
2385 | } | |
2386 | ||
769d324c | 2387 | static int link_set_ipv4_forward(Link *link) { |
5a8bcb67 LP |
2388 | int r; |
2389 | ||
765afd5c | 2390 | if (!link_ipv4_forward_enabled(link)) |
15dee3f0 LP |
2391 | return 0; |
2392 | ||
765afd5c LP |
2393 | /* We propagate the forwarding flag from one interface to the |
2394 | * global setting one way. This means: as long as at least one | |
2395 | * interface was configured at any time that had IP forwarding | |
2396 | * enabled the setting will stay on for good. We do this | |
2397 | * primarily to keep IPv4 and IPv6 packet forwarding behaviour | |
2398 | * somewhat in sync (see below). */ | |
15dee3f0 | 2399 | |
62e021a9 | 2400 | r = sysctl_write_ip_property(AF_INET, NULL, "ip_forward", "1"); |
eb3da901 | 2401 | if (r < 0) |
765afd5c | 2402 | log_link_warning_errno(link, r, "Cannot turn on IPv4 packet forwarding, ignoring: %m"); |
43c6d5ab | 2403 | |
769d324c LP |
2404 | return 0; |
2405 | } | |
2406 | ||
2407 | static int link_set_ipv6_forward(Link *link) { | |
769d324c LP |
2408 | int r; |
2409 | ||
765afd5c | 2410 | if (!link_ipv6_forward_enabled(link)) |
8add5f79 NO |
2411 | return 0; |
2412 | ||
61233823 | 2413 | /* On Linux, the IPv6 stack does not know a per-interface |
765afd5c LP |
2414 | * packet forwarding setting: either packet forwarding is on |
2415 | * for all, or off for all. We hence don't bother with a | |
2416 | * per-interface setting, but simply propagate the interface | |
2417 | * flag, if it is set, to the global flag, one-way. Note that | |
2418 | * while IPv4 would allow a per-interface flag, we expose the | |
2419 | * same behaviour there and also propagate the setting from | |
2420 | * one to all, to keep things simple (see above). */ | |
15dee3f0 | 2421 | |
62e021a9 | 2422 | r = sysctl_write_ip_property(AF_INET6, "all", "forwarding", "1"); |
eb3da901 | 2423 | if (r < 0) |
765afd5c | 2424 | log_link_warning_errno(link, r, "Cannot configure IPv6 packet forwarding, ignoring: %m"); |
5a8bcb67 LP |
2425 | |
2426 | return 0; | |
2427 | } | |
2428 | ||
49092e22 | 2429 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 | 2430 | IPv6PrivacyExtensions s; |
49092e22 SS |
2431 | int r; |
2432 | ||
1f0d9695 | 2433 | s = link_ipv6_privacy_extensions(link); |
66a6bd68 | 2434 | if (s < 0) |
49092e22 SS |
2435 | return 0; |
2436 | ||
62e021a9 | 2437 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "use_tempaddr", (int) link->network->ipv6_privacy_extensions); |
eb3da901 | 2438 | if (r < 0) |
49092e22 SS |
2439 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
2440 | ||
2441 | return 0; | |
2442 | } | |
2443 | ||
4f2e437a | 2444 | static int link_set_ipv6_accept_ra(Link *link) { |
4f2e437a SS |
2445 | int r; |
2446 | ||
2447 | /* Make this a NOP if IPv6 is not available */ | |
2448 | if (!socket_ipv6_is_supported()) | |
2449 | return 0; | |
2450 | ||
2451 | if (link->flags & IFF_LOOPBACK) | |
2452 | return 0; | |
2453 | ||
d68e2e59 LP |
2454 | if (!link->network) |
2455 | return 0; | |
2456 | ||
62e021a9 | 2457 | r = sysctl_write_ip_property(AF_INET6, link->ifname, "accept_ra", "0"); |
eb3da901 | 2458 | if (r < 0) |
fe307276 | 2459 | log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface: %m"); |
4f2e437a SS |
2460 | |
2461 | return 0; | |
2462 | } | |
2463 | ||
8749cbcd | 2464 | static int link_set_ipv6_dad_transmits(Link *link) { |
8749cbcd SS |
2465 | int r; |
2466 | ||
2467 | /* Make this a NOP if IPv6 is not available */ | |
2468 | if (!socket_ipv6_is_supported()) | |
2469 | return 0; | |
2470 | ||
2471 | if (link->flags & IFF_LOOPBACK) | |
2472 | return 0; | |
2473 | ||
d68e2e59 LP |
2474 | if (!link->network) |
2475 | return 0; | |
2476 | ||
8749cbcd SS |
2477 | if (link->network->ipv6_dad_transmits < 0) |
2478 | return 0; | |
2479 | ||
62e021a9 | 2480 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "dad_transmits", link->network->ipv6_dad_transmits); |
eb3da901 | 2481 | if (r < 0) |
8749cbcd | 2482 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); |
8749cbcd SS |
2483 | |
2484 | return 0; | |
2485 | } | |
2486 | ||
b69c3180 | 2487 | static int link_set_ipv6_hop_limit(Link *link) { |
b69c3180 SS |
2488 | int r; |
2489 | ||
2490 | /* Make this a NOP if IPv6 is not available */ | |
2491 | if (!socket_ipv6_is_supported()) | |
2492 | return 0; | |
2493 | ||
2494 | if (link->flags & IFF_LOOPBACK) | |
2495 | return 0; | |
2496 | ||
d68e2e59 LP |
2497 | if (!link->network) |
2498 | return 0; | |
2499 | ||
b69c3180 SS |
2500 | if (link->network->ipv6_hop_limit < 0) |
2501 | return 0; | |
2502 | ||
62e021a9 | 2503 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "hop_limit", link->network->ipv6_hop_limit); |
eb3da901 | 2504 | if (r < 0) |
b69c3180 | 2505 | log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m"); |
b69c3180 SS |
2506 | |
2507 | return 0; | |
2508 | } | |
2509 | ||
11102cba | 2510 | static int link_set_ipv6_mtu(Link *link) { |
11102cba SS |
2511 | int r; |
2512 | ||
2513 | /* Make this a NOP if IPv6 is not available */ | |
2514 | if (!socket_ipv6_is_supported()) | |
2515 | return 0; | |
2516 | ||
2517 | if (link->flags & IFF_LOOPBACK) | |
2518 | return 0; | |
2519 | ||
2520 | if (link->network->ipv6_mtu == 0) | |
2521 | return 0; | |
2522 | ||
d236718c DS |
2523 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes |
2524 | * on the interface. Bump up IPv6 MTU bytes to IPV6_MTU_MIN. */ | |
2525 | if (link->network->ipv6_mtu < IPV6_MIN_MTU) { | |
2526 | log_link_notice(link, "Bumping IPv6 MTU to "STRINGIFY(IPV6_MIN_MTU)" byte minimum required"); | |
2527 | link->network->ipv6_mtu = IPV6_MIN_MTU; | |
2528 | } | |
2529 | ||
62e021a9 | 2530 | r = sysctl_write_ip_property_uint32(AF_INET6, link->ifname, "mtu", link->network->ipv6_mtu); |
d236718c DS |
2531 | if (r < 0) { |
2532 | if (link->mtu < link->network->ipv6_mtu) | |
2533 | log_link_warning(link, "Cannot set IPv6 MTU %"PRIu32" higher than device MTU %"PRIu32, | |
2534 | link->network->ipv6_mtu, link->mtu); | |
2535 | else | |
2536 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface: %m"); | |
2537 | } | |
2538 | ||
2539 | link->ipv6_mtu_set = true; | |
11102cba SS |
2540 | |
2541 | return 0; | |
2542 | } | |
2543 | ||
94d76d07 YW |
2544 | static int link_set_ipv4_accept_local(Link *link) { |
2545 | int r; | |
2546 | ||
2547 | if (link->flags & IFF_LOOPBACK) | |
2548 | return 0; | |
2549 | ||
2550 | if (link->network->ipv4_accept_local < 0) | |
2551 | return 0; | |
2552 | ||
2553 | r = sysctl_write_ip_property_boolean(AF_INET, link->ifname, "accept_local", link->network->ipv4_accept_local); | |
2554 | if (r < 0) | |
2555 | log_link_warning_errno(link, r, "Cannot set IPv4 accept_local flag for interface: %m"); | |
2556 | ||
2557 | return 0; | |
2558 | } | |
2559 | ||
30226d27 TJ |
2560 | static bool link_is_static_address_configured(Link *link, Address *address) { |
2561 | Address *net_address; | |
2562 | ||
2563 | assert(link); | |
2564 | assert(address); | |
2565 | ||
2566 | if (!link->network) | |
2567 | return false; | |
2568 | ||
2569 | LIST_FOREACH(addresses, net_address, link->network->static_addresses) | |
2570 | if (address_equal(net_address, address)) | |
2571 | return true; | |
6f5d73ab YW |
2572 | else if (address->family == AF_INET6 && net_address->family == AF_INET6 && |
2573 | in_addr_equal(AF_INET6, &address->in_addr, &net_address->in_addr_peer) > 0) | |
2574 | return true; | |
30226d27 TJ |
2575 | |
2576 | return false; | |
2577 | } | |
2578 | ||
7ecf0c3e TJ |
2579 | static bool link_is_static_route_configured(Link *link, Route *route) { |
2580 | Route *net_route; | |
2581 | ||
2582 | assert(link); | |
2583 | assert(route); | |
2584 | ||
2585 | if (!link->network) | |
2586 | return false; | |
2587 | ||
2588 | LIST_FOREACH(routes, net_route, link->network->static_routes) | |
2589 | if (route_equal(net_route, route)) | |
2590 | return true; | |
2591 | ||
2592 | return false; | |
2593 | } | |
2594 | ||
db51778f YW |
2595 | static bool link_address_is_dynamic(Link *link, Address *address) { |
2596 | Route *route; | |
db51778f YW |
2597 | |
2598 | assert(link); | |
2599 | assert(address); | |
2600 | ||
2601 | if (address->cinfo.ifa_prefered != CACHE_INFO_INFINITY_LIFE_TIME) | |
2602 | return true; | |
2603 | ||
2604 | /* Even when the address is leased from a DHCP server, networkd assign the address | |
2605 | * without lifetime when KeepConfiguration=dhcp. So, let's check that we have | |
2606 | * corresponding routes with RTPROT_DHCP. */ | |
90e74a66 | 2607 | SET_FOREACH(route, link->routes_foreign) { |
db51778f YW |
2608 | if (route->protocol != RTPROT_DHCP) |
2609 | continue; | |
2610 | ||
2611 | if (address->family != route->family) | |
2612 | continue; | |
2613 | ||
2614 | if (in_addr_equal(address->family, &address->in_addr, &route->prefsrc)) | |
2615 | return true; | |
2616 | } | |
2617 | ||
2618 | return false; | |
2619 | } | |
2620 | ||
0917a271 DS |
2621 | static int link_enumerate_ipv6_tentative_addresses(Link *link) { |
2622 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; | |
2623 | sd_netlink_message *addr; | |
2624 | int r; | |
2625 | ||
2626 | assert(link); | |
2627 | assert(link->manager); | |
2628 | assert(link->manager->rtnl); | |
2629 | ||
2630 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_GETADDR, 0, AF_INET6); | |
2631 | if (r < 0) | |
2632 | return r; | |
2633 | ||
2634 | r = sd_netlink_call(link->manager->rtnl, req, 0, &reply); | |
2635 | if (r < 0) | |
2636 | return r; | |
2637 | ||
2638 | for (addr = reply; addr; addr = sd_netlink_message_next(addr)) { | |
2639 | unsigned char flags; | |
2640 | int ifindex; | |
2641 | ||
2642 | r = sd_rtnl_message_addr_get_ifindex(addr, &ifindex); | |
2643 | if (r < 0) { | |
2644 | log_link_warning_errno(link, r, "rtnl: invalid ifindex, ignoring: %m"); | |
2645 | continue; | |
2646 | } else if (link->ifindex != ifindex) | |
2647 | continue; | |
2648 | ||
2649 | r = sd_rtnl_message_addr_get_flags(addr, &flags); | |
2650 | if (r < 0) { | |
2651 | log_link_warning_errno(link, r, "rtnl: received address message with invalid flags, ignoring: %m"); | |
2652 | continue; | |
2653 | } else if (!(flags & IFA_F_TENTATIVE)) | |
2654 | continue; | |
2655 | ||
2656 | log_link_debug(link, "Found tentative ipv6 link-local address"); | |
2657 | (void) manager_rtnl_process_address(link->manager->rtnl, addr, link->manager); | |
2658 | } | |
2659 | ||
2660 | return 0; | |
2661 | } | |
2662 | ||
5e5b137a TG |
2663 | static int link_drop_foreign_config(Link *link) { |
2664 | Address *address; | |
2665 | Route *route; | |
5e5b137a TG |
2666 | int r; |
2667 | ||
0917a271 DS |
2668 | /* The kernel doesn't notify us about tentative addresses; |
2669 | * so if ipv6ll is disabled, we need to enumerate them now so we can drop them below */ | |
2670 | if (!link_ipv6ll_enabled(link)) { | |
2671 | r = link_enumerate_ipv6_tentative_addresses(link); | |
2672 | if (r < 0) | |
2673 | return r; | |
2674 | } | |
2675 | ||
90e74a66 | 2676 | SET_FOREACH(address, link->addresses_foreign) { |
fe307276 | 2677 | /* we consider IPv6LL addresses to be managed by the kernel */ |
5539fc0f | 2678 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1 && link_ipv6ll_enabled(link)) |
5e5b137a TG |
2679 | continue; |
2680 | ||
db51778f | 2681 | if (link_address_is_dynamic(link, address)) { |
b1b0b42e | 2682 | if (link->network && FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP)) |
db51778f | 2683 | continue; |
b1b0b42e | 2684 | } else if (link->network && FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_STATIC)) |
db51778f YW |
2685 | continue; |
2686 | ||
30226d27 TJ |
2687 | if (link_is_static_address_configured(link, address)) { |
2688 | r = address_add(link, address->family, &address->in_addr, address->prefixlen, NULL); | |
2689 | if (r < 0) | |
2690 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
2691 | } else { | |
63ae0569 | 2692 | r = address_remove(address, link, NULL); |
30226d27 TJ |
2693 | if (r < 0) |
2694 | return r; | |
2695 | } | |
5e5b137a TG |
2696 | } |
2697 | ||
59048336 YW |
2698 | r = link_drop_foreign_neighbors(link); |
2699 | if (r < 0) | |
2700 | return r; | |
d1bdafd2 | 2701 | |
90e74a66 | 2702 | SET_FOREACH(route, link->routes_foreign) { |
fe307276 | 2703 | /* do not touch routes managed by the kernel */ |
5e5b137a TG |
2704 | if (route->protocol == RTPROT_KERNEL) |
2705 | continue; | |
2706 | ||
bd7d6cec YW |
2707 | /* do not touch multicast route added by kernel */ |
2708 | /* FIXME: Why the kernel adds this route with protocol RTPROT_BOOT??? We need to investigate that. | |
2709 | * https://tools.ietf.org/html/rfc4862#section-5.4 may explain why. */ | |
2710 | if (route->protocol == RTPROT_BOOT && | |
2711 | route->family == AF_INET6 && | |
2712 | route->dst_prefixlen == 8 && | |
2713 | in_addr_equal(AF_INET6, &route->dst, &(union in_addr_union) { .in6 = {{{ 0xff,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 }}} })) | |
2714 | continue; | |
2715 | ||
b1b0b42e | 2716 | if (route->protocol == RTPROT_STATIC && link->network && |
db51778f YW |
2717 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_STATIC)) |
2718 | continue; | |
2719 | ||
b1b0b42e | 2720 | if (route->protocol == RTPROT_DHCP && link->network && |
db51778f YW |
2721 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP)) |
2722 | continue; | |
2723 | ||
7ecf0c3e | 2724 | if (link_is_static_route_configured(link, route)) { |
f1368755 | 2725 | r = route_add(link, route, NULL); |
7ecf0c3e TJ |
2726 | if (r < 0) |
2727 | return r; | |
2728 | } else { | |
4645ad47 | 2729 | r = route_remove(route, link, NULL); |
7ecf0c3e TJ |
2730 | if (r < 0) |
2731 | return r; | |
2732 | } | |
5e5b137a TG |
2733 | } |
2734 | ||
2735 | return 0; | |
2736 | } | |
2737 | ||
9b966cee YW |
2738 | static int remove_static_address_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
2739 | int r; | |
2740 | ||
2741 | assert(m); | |
2742 | assert(link); | |
2743 | assert(link->ifname); | |
2744 | assert(link->address_remove_messages > 0); | |
2745 | ||
2746 | link->address_remove_messages--; | |
2747 | ||
2748 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
2749 | return 1; | |
2750 | ||
2751 | r = sd_netlink_message_get_errno(m); | |
2752 | if (r < 0 && r != -EADDRNOTAVAIL) | |
2753 | log_link_message_warning_errno(link, m, r, "Could not drop address"); | |
2754 | else if (r >= 0) | |
2755 | (void) manager_rtnl_process_address(rtnl, m, link->manager); | |
2756 | ||
2757 | if (link->address_remove_messages == 0 && link->request_static_addresses) { | |
2758 | link_set_state(link, LINK_STATE_CONFIGURING); | |
2759 | r = link_request_set_addresses(link); | |
2760 | if (r < 0) | |
2761 | link_enter_failed(link); | |
2762 | } | |
2763 | ||
2764 | return 1; | |
2765 | } | |
2766 | ||
3104883d | 2767 | static int link_drop_config(Link *link) { |
410a7f15 | 2768 | Address *address, *pool_address; |
3104883d | 2769 | Route *route; |
3104883d SS |
2770 | int r; |
2771 | ||
90e74a66 | 2772 | SET_FOREACH(address, link->addresses) { |
3104883d | 2773 | /* we consider IPv6LL addresses to be managed by the kernel */ |
5539fc0f | 2774 | if (address->family == AF_INET6 && in_addr_is_link_local(AF_INET6, &address->in_addr) == 1 && link_ipv6ll_enabled(link)) |
3104883d SS |
2775 | continue; |
2776 | ||
9b966cee | 2777 | r = address_remove(address, link, remove_static_address_handler); |
3104883d SS |
2778 | if (r < 0) |
2779 | return r; | |
410a7f15 | 2780 | |
9b966cee YW |
2781 | link->address_remove_messages++; |
2782 | ||
410a7f15 | 2783 | /* If this address came from an address pool, clean up the pool */ |
b6766fb1 | 2784 | LIST_FOREACH(addresses, pool_address, link->pool_addresses) |
410a7f15 RM |
2785 | if (address_equal(address, pool_address)) { |
2786 | LIST_REMOVE(addresses, link->pool_addresses, pool_address); | |
2787 | address_free(pool_address); | |
2788 | break; | |
2789 | } | |
3104883d SS |
2790 | } |
2791 | ||
59048336 YW |
2792 | r = link_drop_neighbors(link); |
2793 | if (r < 0) | |
2794 | return r; | |
d1bdafd2 | 2795 | |
90e74a66 | 2796 | SET_FOREACH(route, link->routes) { |
3104883d SS |
2797 | /* do not touch routes managed by the kernel */ |
2798 | if (route->protocol == RTPROT_KERNEL) | |
2799 | continue; | |
2800 | ||
4645ad47 | 2801 | r = route_remove(route, link, NULL); |
3104883d SS |
2802 | if (r < 0) |
2803 | return r; | |
2804 | } | |
2805 | ||
c69305ff LP |
2806 | ndisc_flush(link); |
2807 | ||
3104883d SS |
2808 | return 0; |
2809 | } | |
2810 | ||
051e77ca SS |
2811 | static int link_configure_ipv4_dad(Link *link) { |
2812 | Address *address; | |
2813 | int r; | |
2814 | ||
2815 | assert(link); | |
2816 | assert(link->network); | |
2817 | ||
2818 | LIST_FOREACH(addresses, address, link->network->static_addresses) | |
2819 | if (address->family == AF_INET && | |
2820 | FLAGS_SET(address->duplicate_address_detection, ADDRESS_FAMILY_IPV4)) { | |
2821 | r = configure_ipv4_duplicate_address_detection(link, address); | |
2822 | if (r < 0) | |
2823 | return log_link_error_errno(link, r, "Failed to configure IPv4ACD: %m"); | |
2824 | } | |
2825 | ||
2826 | return 0; | |
2827 | } | |
2828 | ||
34658df2 YW |
2829 | static int link_configure_traffic_control(Link *link) { |
2830 | TrafficControl *tc; | |
02b59d57 TG |
2831 | int r; |
2832 | ||
34658df2 YW |
2833 | link->tc_configured = false; |
2834 | link->tc_messages = 0; | |
4ecdcb07 | 2835 | |
90e74a66 | 2836 | ORDERED_HASHMAP_FOREACH(tc, link->network->tc_by_section) { |
34658df2 | 2837 | r = traffic_control_configure(link, tc); |
4ecdcb07 YW |
2838 | if (r < 0) |
2839 | return r; | |
2840 | } | |
2841 | ||
34658df2 YW |
2842 | if (link->tc_messages == 0) |
2843 | link->tc_configured = true; | |
4ecdcb07 | 2844 | else |
34658df2 | 2845 | log_link_debug(link, "Configuring traffic control"); |
4ecdcb07 YW |
2846 | |
2847 | return 0; | |
2848 | } | |
2849 | ||
518cd6b5 SS |
2850 | static int link_configure_sr_iov(Link *link) { |
2851 | SRIOV *sr_iov; | |
518cd6b5 SS |
2852 | int r; |
2853 | ||
2854 | link->sr_iov_configured = false; | |
2855 | link->sr_iov_messages = 0; | |
2856 | ||
90e74a66 | 2857 | ORDERED_HASHMAP_FOREACH(sr_iov, link->network->sr_iov_by_section) { |
518cd6b5 SS |
2858 | r = sr_iov_configure(link, sr_iov); |
2859 | if (r < 0) | |
2860 | return r; | |
2861 | } | |
2862 | ||
2863 | if (link->sr_iov_messages == 0) | |
2864 | link->sr_iov_configured = true; | |
2865 | else | |
2866 | log_link_debug(link, "Configuring SR-IOV"); | |
2867 | ||
2868 | return 0; | |
2869 | } | |
2870 | ||
4ecdcb07 YW |
2871 | static int link_configure(Link *link) { |
2872 | int r; | |
2873 | ||
ef1ba606 | 2874 | assert(link); |
b22d8a00 | 2875 | assert(link->network); |
bd08ce56 | 2876 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 2877 | |
34658df2 | 2878 | r = link_configure_traffic_control(link); |
4ecdcb07 YW |
2879 | if (r < 0) |
2880 | return r; | |
2881 | ||
518cd6b5 SS |
2882 | r = link_configure_sr_iov(link); |
2883 | if (r < 0) | |
2884 | return r; | |
2885 | ||
500b96eb | 2886 | if (link->iftype == ARPHRD_CAN) |
93ea7750 | 2887 | return link_configure_can(link); |
92c918b0 | 2888 | |
482efedc SS |
2889 | /* If IPv6 configured that is static IPv6 address and IPv6LL autoconfiguration is enabled |
2890 | * for this interface, then enable IPv6 */ | |
57ad7607 | 2891 | (void) link_update_ipv6_sysctl(link); |
482efedc | 2892 | |
23d8b221 SS |
2893 | r = link_set_proxy_arp(link); |
2894 | if (r < 0) | |
2895 | return r; | |
2896 | ||
a0e5c15d FK |
2897 | r = ipv6_proxy_ndp_addresses_configure(link); |
2898 | if (r < 0) | |
2899 | return r; | |
2900 | ||
769d324c LP |
2901 | r = link_set_ipv4_forward(link); |
2902 | if (r < 0) | |
2903 | return r; | |
2904 | ||
2905 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
2906 | if (r < 0) |
2907 | return r; | |
2908 | ||
49092e22 SS |
2909 | r = link_set_ipv6_privacy_extensions(link); |
2910 | if (r < 0) | |
2911 | return r; | |
2912 | ||
4f2e437a SS |
2913 | r = link_set_ipv6_accept_ra(link); |
2914 | if (r < 0) | |
2915 | return r; | |
2916 | ||
8749cbcd SS |
2917 | r = link_set_ipv6_dad_transmits(link); |
2918 | if (r < 0) | |
2919 | return r; | |
b69c3180 SS |
2920 | |
2921 | r = link_set_ipv6_hop_limit(link); | |
2922 | if (r < 0) | |
2923 | return r; | |
8749cbcd | 2924 | |
94d76d07 YW |
2925 | r = link_set_ipv4_accept_local(link); |
2926 | if (r < 0) | |
2927 | return r; | |
2928 | ||
99d2baa2 SS |
2929 | r = link_set_flags(link); |
2930 | if (r < 0) | |
2931 | return r; | |
2932 | ||
89fe6535 SS |
2933 | r = link_set_group(link); |
2934 | if (r < 0) | |
2935 | return r; | |
2936 | ||
910feb78 | 2937 | if (link_ipv4ll_enabled(link, ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_FALLBACK_IPV4)) { |
b22d8a00 | 2938 | r = ipv4ll_configure(link); |
eb34d4af TG |
2939 | if (r < 0) |
2940 | return r; | |
2941 | } | |
2942 | ||
78c958f8 | 2943 | if (link_dhcp4_enabled(link)) { |
64b21ece MV |
2944 | r = dhcp4_set_promote_secondaries(link); |
2945 | if (r < 0) | |
2946 | return r; | |
2947 | ||
3c9b8860 | 2948 | r = dhcp4_configure(link); |
eb34d4af TG |
2949 | if (r < 0) |
2950 | return r; | |
eb34d4af TG |
2951 | } |
2952 | ||
78c958f8 | 2953 | if (link_dhcp4_server_enabled(link)) { |
dd43110f TG |
2954 | r = sd_dhcp_server_new(&link->dhcp_server, link->ifindex); |
2955 | if (r < 0) | |
2956 | return r; | |
2957 | ||
2958 | r = sd_dhcp_server_attach_event(link->dhcp_server, NULL, 0); | |
2959 | if (r < 0) | |
2960 | return r; | |
dd43110f TG |
2961 | } |
2962 | ||
62379e88 TG |
2963 | if (link_dhcp6_enabled(link) || |
2964 | link_ipv6_accept_ra_enabled(link)) { | |
f5a8c43f TG |
2965 | r = dhcp6_configure(link); |
2966 | if (r < 0) | |
2967 | return r; | |
2968 | } | |
2969 | ||
2970 | if (link_ipv6_accept_ra_enabled(link)) { | |
de1e9928 | 2971 | r = ndisc_configure(link); |
4138fb2c PF |
2972 | if (r < 0) |
2973 | return r; | |
2974 | } | |
2975 | ||
7465dd22 PF |
2976 | if (link_radv_enabled(link)) { |
2977 | r = radv_configure(link); | |
2978 | if (r < 0) | |
2979 | return r; | |
2980 | } | |
2981 | ||
8e1ad1ea | 2982 | if (link_lldp_rx_enabled(link)) { |
7f853950 | 2983 | r = link_lldp_rx_configure(link); |
273eec24 LP |
2984 | if (r < 0) |
2985 | return r; | |
ce43e484 SS |
2986 | } |
2987 | ||
f6fcc1c2 | 2988 | r = link_configure_mtu(link); |
40288ece YW |
2989 | if (r < 0) |
2990 | return r; | |
44b598a1 | 2991 | |
9f6e82e6 YW |
2992 | r = link_configure_addrgen_mode(link); |
2993 | if (r < 0) | |
2994 | return r; | |
0e2fdb83 | 2995 | |
051e77ca SS |
2996 | r = link_configure_ipv4_dad(link); |
2997 | if (r < 0) | |
2998 | return r; | |
2999 | ||
3a390124 DS |
3000 | return link_configure_continue(link); |
3001 | } | |
3002 | ||
3003 | /* The configuration continues in this separate function, instead of | |
3004 | * including this in the above link_configure() function, for two | |
3005 | * reasons: | |
3006 | * 1) some devices reset the link when the mtu is set, which caused | |
3007 | * an infinite loop here in networkd; see: | |
3008 | * https://github.com/systemd/systemd/issues/6593 | |
3009 | * https://github.com/systemd/systemd/issues/9831 | |
3010 | * 2) if ipv6ll is disabled, then bringing the interface up must be | |
3011 | * delayed until after we get confirmation from the kernel that | |
3012 | * the addr_gen_mode parameter has been set (via netlink), see: | |
3013 | * https://github.com/systemd/systemd/issues/13882 | |
3014 | */ | |
3015 | static int link_configure_continue(Link *link) { | |
55dc8c4a YW |
3016 | int r; |
3017 | ||
3018 | assert(link); | |
3019 | assert(link->network); | |
bd08ce56 | 3020 | assert(link->state == LINK_STATE_INITIALIZED); |
55dc8c4a | 3021 | |
9524014e | 3022 | if (link->setting_mtu || link->setting_genmode) |
55dc8c4a YW |
3023 | return 0; |
3024 | ||
4c649652 DS |
3025 | /* Drop foreign config, but ignore loopback or critical devices. |
3026 | * We do not want to remove loopback address or addresses used for root NFS. */ | |
3027 | if (!(link->flags & IFF_LOOPBACK) && | |
3028 | link->network->keep_configuration != KEEP_CONFIGURATION_YES) { | |
3029 | r = link_drop_foreign_config(link); | |
3030 | if (r < 0) | |
3031 | return r; | |
3032 | } | |
3033 | ||
d236718c DS |
3034 | /* The kernel resets ipv6 mtu after changing device mtu; |
3035 | * we must set this here, after we've set device mtu */ | |
3036 | r = link_set_ipv6_mtu(link); | |
3037 | if (r < 0) | |
3038 | return r; | |
3039 | ||
dad2d78e | 3040 | if (link_has_carrier(link) || link->network->configure_without_carrier) { |
1e9be60b TG |
3041 | r = link_acquire_conf(link); |
3042 | if (r < 0) | |
3043 | return r; | |
cc544d5f | 3044 | } |
1e9be60b | 3045 | |
3f265037 | 3046 | return link_enter_join_netdev(link); |
505f8da7 TG |
3047 | } |
3048 | ||
27dfc982 YW |
3049 | static int duid_set_uuid(DUID *duid, sd_id128_t uuid) { |
3050 | assert(duid); | |
3051 | ||
3052 | if (duid->raw_data_len > 0) | |
3053 | return 0; | |
3054 | ||
3055 | if (duid->type != DUID_TYPE_UUID) | |
3056 | return -EINVAL; | |
3057 | ||
3058 | memcpy(&duid->raw_data, &uuid, sizeof(sd_id128_t)); | |
3059 | duid->raw_data_len = sizeof(sd_id128_t); | |
3060 | ||
3061 | return 1; | |
3062 | } | |
3063 | ||
3064 | int get_product_uuid_handler(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { | |
3065 | Manager *manager = userdata; | |
3066 | const sd_bus_error *e; | |
3067 | const void *a; | |
3068 | size_t sz; | |
3069 | DUID *duid; | |
3070 | Link *link; | |
3071 | int r; | |
3072 | ||
3073 | assert(m); | |
3074 | assert(manager); | |
3075 | ||
3076 | e = sd_bus_message_get_error(m); | |
3077 | if (e) { | |
3078 | log_error_errno(sd_bus_error_get_errno(e), | |
ab4dd984 | 3079 | "Could not get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %s", |
27dfc982 YW |
3080 | e->message); |
3081 | goto configure; | |
3082 | } | |
3083 | ||
3084 | r = sd_bus_message_read_array(m, 'y', &a, &sz); | |
3085 | if (r < 0) | |
3086 | goto configure; | |
3087 | ||
3088 | if (sz != sizeof(sd_id128_t)) { | |
ab4dd984 | 3089 | log_error("Invalid product UUID. Falling back to use machine-app-specific ID as DUID-UUID."); |
27dfc982 YW |
3090 | goto configure; |
3091 | } | |
3092 | ||
3093 | memcpy(&manager->product_uuid, a, sz); | |
3094 | while ((duid = set_steal_first(manager->duids_requesting_uuid))) | |
3095 | (void) duid_set_uuid(duid, manager->product_uuid); | |
3096 | ||
3097 | manager->duids_requesting_uuid = set_free(manager->duids_requesting_uuid); | |
3098 | ||
3099 | configure: | |
3100 | while ((link = set_steal_first(manager->links_requesting_uuid))) { | |
3dc2e7af YW |
3101 | link_unref(link); |
3102 | ||
27dfc982 YW |
3103 | r = link_configure(link); |
3104 | if (r < 0) | |
4ff296b0 | 3105 | link_enter_failed(link); |
27dfc982 YW |
3106 | } |
3107 | ||
3108 | manager->links_requesting_uuid = set_free(manager->links_requesting_uuid); | |
3109 | ||
3110 | /* To avoid calling GetProductUUID() bus method so frequently, set the flag below | |
3111 | * even if the method fails. */ | |
3112 | manager->has_product_uuid = true; | |
3113 | ||
3114 | return 1; | |
3115 | } | |
3116 | ||
3117 | static bool link_requires_uuid(Link *link) { | |
3118 | const DUID *duid; | |
3119 | ||
3120 | assert(link); | |
3121 | assert(link->manager); | |
3122 | assert(link->network); | |
3123 | ||
3124 | duid = link_get_duid(link); | |
3125 | if (duid->type != DUID_TYPE_UUID || duid->raw_data_len != 0) | |
3126 | return false; | |
3127 | ||
3128 | if (link_dhcp4_enabled(link) && IN_SET(link->network->dhcp_client_identifier, DHCP_CLIENT_ID_DUID, DHCP_CLIENT_ID_DUID_ONLY)) | |
3129 | return true; | |
3130 | ||
3131 | if (link_dhcp6_enabled(link) || link_ipv6_accept_ra_enabled(link)) | |
3132 | return true; | |
3133 | ||
3134 | return false; | |
3135 | } | |
3136 | ||
3137 | static int link_configure_duid(Link *link) { | |
3138 | Manager *m; | |
3139 | DUID *duid; | |
3140 | int r; | |
3141 | ||
3142 | assert(link); | |
3143 | assert(link->manager); | |
3144 | assert(link->network); | |
3145 | ||
3146 | m = link->manager; | |
3147 | duid = link_get_duid(link); | |
3148 | ||
3149 | if (!link_requires_uuid(link)) | |
3150 | return 1; | |
3151 | ||
3152 | if (m->has_product_uuid) { | |
3153 | (void) duid_set_uuid(duid, m->product_uuid); | |
3154 | return 1; | |
3155 | } | |
3156 | ||
3157 | if (!m->links_requesting_uuid) { | |
3158 | r = manager_request_product_uuid(m, link); | |
3159 | if (r < 0) { | |
3160 | if (r == -ENOMEM) | |
3161 | return r; | |
3162 | ||
ab4dd984 ZJS |
3163 | log_link_warning_errno(link, r, |
3164 | "Failed to get product UUID. Falling back to use machine-app-specific ID as DUID-UUID: %m"); | |
27dfc982 YW |
3165 | return 1; |
3166 | } | |
3167 | } else { | |
3168 | r = set_put(m->links_requesting_uuid, link); | |
3169 | if (r < 0) | |
3170 | return log_oom(); | |
39dbd0c7 ZJS |
3171 | if (r > 0) |
3172 | link_ref(link); | |
27dfc982 YW |
3173 | |
3174 | r = set_put(m->duids_requesting_uuid, duid); | |
3175 | if (r < 0) | |
3176 | return log_oom(); | |
3177 | } | |
3178 | ||
3179 | return 0; | |
3180 | } | |
3181 | ||
572b21d9 | 3182 | static int link_reconfigure_internal(Link *link, sd_netlink_message *m, bool force) { |
ad932b15 YW |
3183 | Network *network; |
3184 | int r; | |
3185 | ||
572b21d9 YW |
3186 | if (m) { |
3187 | _cleanup_strv_free_ char **s = NULL; | |
3188 | ||
3189 | r = sd_netlink_message_get_errno(m); | |
3190 | if (r < 0) | |
3191 | return r; | |
3192 | ||
3193 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); | |
3194 | if (r < 0 && r != -ENODATA) | |
3195 | return r; | |
3196 | ||
3197 | strv_free_and_replace(link->alternative_names, s); | |
3198 | } | |
3199 | ||
c643bda5 YW |
3200 | r = network_get(link->manager, link->iftype, link->sd_device, |
3201 | link->ifname, link->alternative_names, link->driver, | |
3202 | &link->mac, &link->permanent_mac, | |
3203 | link->wlan_iftype, link->ssid, &link->bssid, &network); | |
ad932b15 YW |
3204 | if (r == -ENOENT) { |
3205 | link_enter_unmanaged(link); | |
3206 | return 0; | |
3207 | } else if (r == 0 && network->unmanaged) { | |
3208 | link_enter_unmanaged(link); | |
3209 | return 0; | |
3210 | } else if (r < 0) | |
3211 | return r; | |
3212 | ||
99b8517c | 3213 | if (link->network == network && !force) |
ad932b15 YW |
3214 | return 0; |
3215 | ||
3216 | log_link_info(link, "Re-configuring with %s", network->filename); | |
3217 | ||
3218 | /* Dropping old .network file */ | |
3219 | r = link_stop_clients(link, false); | |
572b21d9 | 3220 | if (r < 0) |
ad932b15 | 3221 | return r; |
ad932b15 YW |
3222 | |
3223 | if (link_dhcp4_server_enabled(link)) | |
3224 | (void) sd_dhcp_server_stop(link->dhcp_server); | |
3225 | ||
3226 | r = link_drop_config(link); | |
3227 | if (r < 0) | |
3228 | return r; | |
3229 | ||
2c7b826d | 3230 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
ad932b15 YW |
3231 | log_link_debug(link, "State is %s, dropping config", link_state_to_string(link->state)); |
3232 | r = link_drop_foreign_config(link); | |
3233 | if (r < 0) | |
3234 | return r; | |
3235 | } | |
3236 | ||
3237 | link_free_carrier_maps(link); | |
3238 | link_free_engines(link); | |
3239 | link->network = network_unref(link->network); | |
3240 | ||
3241 | /* Then, apply new .network file */ | |
3242 | r = network_apply(network, link); | |
3243 | if (r < 0) | |
3244 | return r; | |
3245 | ||
3246 | r = link_new_carrier_maps(link); | |
3247 | if (r < 0) | |
3248 | return r; | |
3249 | ||
3250 | link_set_state(link, LINK_STATE_INITIALIZED); | |
8ae7b8a1 | 3251 | link_dirty(link); |
ad932b15 YW |
3252 | |
3253 | /* link_configure_duid() returns 0 if it requests product UUID. In that case, | |
3254 | * link_configure() is called later asynchronously. */ | |
3255 | r = link_configure_duid(link); | |
3256 | if (r <= 0) | |
3257 | return r; | |
3258 | ||
3259 | r = link_configure(link); | |
3260 | if (r < 0) | |
3261 | return r; | |
3262 | ||
3263 | return 0; | |
3264 | } | |
3265 | ||
572b21d9 YW |
3266 | static int link_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
3267 | int r; | |
3268 | ||
3269 | r = link_reconfigure_internal(link, m, false); | |
3270 | if (r < 0) | |
3271 | link_enter_failed(link); | |
3272 | ||
3273 | return 1; | |
3274 | } | |
3275 | ||
3276 | static int link_force_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
3277 | int r; | |
3278 | ||
3279 | r = link_reconfigure_internal(link, m, true); | |
3280 | if (r < 0) | |
3281 | link_enter_failed(link); | |
3282 | ||
3283 | return 1; | |
3284 | } | |
3285 | ||
3286 | int link_reconfigure(Link *link, bool force) { | |
3287 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
3288 | int r; | |
3289 | ||
2c0d7ed3 YW |
3290 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_LINGER)) |
3291 | return 0; | |
3292 | ||
572b21d9 YW |
3293 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
3294 | link->ifindex); | |
3295 | if (r < 0) | |
3296 | return r; | |
3297 | ||
3298 | r = netlink_call_async(link->manager->rtnl, NULL, req, | |
3299 | force ? link_force_reconfigure_handler : link_reconfigure_handler, | |
3300 | link_netlink_destroy_callback, link); | |
3301 | if (r < 0) | |
3302 | return r; | |
3303 | ||
3304 | link_ref(link); | |
3305 | ||
3306 | return 0; | |
3307 | } | |
3308 | ||
e6bf7774 | 3309 | static int link_initialized_and_synced(Link *link) { |
505f8da7 | 3310 | Network *network; |
505f8da7 TG |
3311 | int r; |
3312 | ||
3313 | assert(link); | |
3314 | assert(link->ifname); | |
3315 | assert(link->manager); | |
3316 | ||
bd08ce56 YW |
3317 | /* We may get called either from the asynchronous netlink callback, |
3318 | * or directly for link_add() if running in a container. See link_add(). */ | |
3319 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) | |
4232cf04 | 3320 | return 0; |
505f8da7 | 3321 | |
6a7a4e4d | 3322 | log_link_debug(link, "Link state is up-to-date"); |
bd08ce56 | 3323 | link_set_state(link, LINK_STATE_INITIALIZED); |
505f8da7 | 3324 | |
0d4ad91d AR |
3325 | r = link_new_bound_by_list(link); |
3326 | if (r < 0) | |
3327 | return r; | |
3328 | ||
3329 | r = link_handle_bound_by_list(link); | |
3330 | if (r < 0) | |
3331 | return r; | |
3332 | ||
c4a03a56 | 3333 | if (!link->network) { |
0894cfe4 | 3334 | r = wifi_get_info(link); |
8d968fdd YW |
3335 | if (r < 0) |
3336 | return r; | |
3337 | ||
c643bda5 YW |
3338 | r = network_get(link->manager, link->iftype, link->sd_device, |
3339 | link->ifname, link->alternative_names, link->driver, | |
3340 | &link->mac, &link->permanent_mac, | |
3341 | link->wlan_iftype, link->ssid, &link->bssid, &network); | |
c4a03a56 TG |
3342 | if (r == -ENOENT) { |
3343 | link_enter_unmanaged(link); | |
4232cf04 | 3344 | return 0; |
a09dc546 DM |
3345 | } else if (r == 0 && network->unmanaged) { |
3346 | link_enter_unmanaged(link); | |
3347 | return 0; | |
c4a03a56 TG |
3348 | } else if (r < 0) |
3349 | return r; | |
505f8da7 | 3350 | |
c4a03a56 TG |
3351 | if (link->flags & IFF_LOOPBACK) { |
3352 | if (network->link_local != ADDRESS_FAMILY_NO) | |
3353 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 3354 | |
c4a03a56 TG |
3355 | if (network->dhcp != ADDRESS_FAMILY_NO) |
3356 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 3357 | |
c4a03a56 TG |
3358 | if (network->dhcp_server) |
3359 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
3360 | } | |
bd2efe92 | 3361 | |
7d342c03 | 3362 | r = network_apply(network, link); |
c4a03a56 TG |
3363 | if (r < 0) |
3364 | return r; | |
3365 | } | |
505f8da7 | 3366 | |
0d4ad91d AR |
3367 | r = link_new_bound_to_list(link); |
3368 | if (r < 0) | |
3369 | return r; | |
3370 | ||
27dfc982 YW |
3371 | /* link_configure_duid() returns 0 if it requests product UUID. In that case, |
3372 | * link_configure() is called later asynchronously. */ | |
3373 | r = link_configure_duid(link); | |
3374 | if (r <= 0) | |
3375 | return r; | |
3376 | ||
a748b692 TG |
3377 | r = link_configure(link); |
3378 | if (r < 0) | |
3379 | return r; | |
3380 | ||
4232cf04 | 3381 | return 0; |
505f8da7 TG |
3382 | } |
3383 | ||
302a796f | 3384 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
572b21d9 | 3385 | _cleanup_strv_free_ char **s = NULL; |
4ff296b0 YW |
3386 | int r; |
3387 | ||
572b21d9 YW |
3388 | r = sd_netlink_message_get_errno(m); |
3389 | if (r < 0) { | |
40681e5c | 3390 | log_link_warning_errno(link, r, "Failed to wait for the interface to be initialized: %m"); |
572b21d9 YW |
3391 | link_enter_failed(link); |
3392 | return 0; | |
3393 | } | |
3394 | ||
3395 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); | |
3396 | if (r < 0 && r != -ENODATA) { | |
3397 | link_enter_failed(link); | |
3398 | return 0; | |
3399 | } | |
3400 | ||
3401 | strv_free_and_replace(link->alternative_names, s); | |
3402 | ||
4ff296b0 YW |
3403 | r = link_initialized_and_synced(link); |
3404 | if (r < 0) | |
3405 | link_enter_failed(link); | |
e6bf7774 YW |
3406 | return 1; |
3407 | } | |
3408 | ||
51517f9e | 3409 | int link_initialized(Link *link, sd_device *device) { |
4afd3348 | 3410 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f561e8e TG |
3411 | int r; |
3412 | ||
3413 | assert(link); | |
3414 | assert(link->manager); | |
3415 | assert(link->manager->rtnl); | |
3416 | assert(device); | |
3417 | ||
8434fd5c | 3418 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
3419 | return 0; |
3420 | ||
51517f9e | 3421 | if (link->sd_device) |
679b3605 TG |
3422 | return 0; |
3423 | ||
79008bdd | 3424 | log_link_debug(link, "udev initialized link"); |
bd08ce56 | 3425 | link_set_state(link, LINK_STATE_INITIALIZED); |
4f561e8e | 3426 | |
51517f9e | 3427 | link->sd_device = sd_device_ref(device); |
4f561e8e | 3428 | |
3c9b8860 TG |
3429 | /* udev has initialized the link, but we don't know if we have yet |
3430 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
3431 | * when it returns we know that the pending NEWLINKs have already been | |
3432 | * processed and that we are up-to-date */ | |
4f561e8e | 3433 | |
3c9b8860 TG |
3434 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
3435 | link->ifindex); | |
4f561e8e TG |
3436 | if (r < 0) |
3437 | return r; | |
3438 | ||
302a796f YW |
3439 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_initialized_handler, |
3440 | link_netlink_destroy_callback, link); | |
4f561e8e TG |
3441 | if (r < 0) |
3442 | return r; | |
3443 | ||
5da8149f TG |
3444 | link_ref(link); |
3445 | ||
4f561e8e TG |
3446 | return 0; |
3447 | } | |
3448 | ||
c4a03a56 | 3449 | static int link_load(Link *link) { |
0bc70f1d TG |
3450 | _cleanup_free_ char *network_file = NULL, |
3451 | *addresses = NULL, | |
f703cc2c | 3452 | *routes = NULL, |
0bc70f1d TG |
3453 | *dhcp4_address = NULL, |
3454 | *ipv4ll_address = NULL; | |
3455 | union in_addr_union address; | |
c4a03a56 TG |
3456 | int r; |
3457 | ||
3458 | assert(link); | |
3459 | ||
aa8fbc74 | 3460 | r = parse_env_file(NULL, link->state_file, |
c4a03a56 TG |
3461 | "NETWORK_FILE", &network_file, |
3462 | "ADDRESSES", &addresses, | |
f703cc2c | 3463 | "ROUTES", &routes, |
0bc70f1d | 3464 | "DHCP4_ADDRESS", &dhcp4_address, |
13df9c39 | 3465 | "IPV4LL_ADDRESS", &ipv4ll_address); |
c4a03a56 TG |
3466 | if (r < 0 && r != -ENOENT) |
3467 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
3468 | ||
3469 | if (network_file) { | |
3470 | Network *network; | |
3471 | char *suffix; | |
3472 | ||
3473 | /* drop suffix */ | |
3474 | suffix = strrchr(network_file, '.'); | |
3475 | if (!suffix) { | |
3476 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
3477 | goto network_file_fail; | |
3478 | } | |
3479 | *suffix = '\0'; | |
3480 | ||
3481 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
3482 | if (r < 0) { | |
3483 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
3484 | goto network_file_fail; | |
3485 | } | |
3486 | ||
7d342c03 | 3487 | r = network_apply(network, link); |
c4a03a56 TG |
3488 | if (r < 0) |
3489 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
3490 | } | |
3491 | ||
3492 | network_file_fail: | |
3493 | ||
1f68f772 ZJS |
3494 | for (const char *p = addresses; p; ) { |
3495 | _cleanup_free_ char *address_str = NULL; | |
3496 | char *prefixlen_str; | |
3497 | int family; | |
3498 | unsigned char prefixlen; | |
c4a03a56 | 3499 | |
1f68f772 ZJS |
3500 | r = extract_first_word(&p, &address_str, NULL, 0); |
3501 | if (r < 0) | |
3502 | log_link_warning_errno(link, r, "failed to parse ADDRESSES: %m"); | |
3503 | if (r <= 0) | |
3504 | break; | |
c4a03a56 | 3505 | |
1f68f772 ZJS |
3506 | prefixlen_str = strchr(address_str, '/'); |
3507 | if (!prefixlen_str) { | |
3508 | log_link_debug(link, "Failed to parse address and prefix length %s", address_str); | |
3509 | continue; | |
3510 | } | |
3511 | *prefixlen_str++ = '\0'; | |
c4a03a56 | 3512 | |
1f68f772 ZJS |
3513 | r = sscanf(prefixlen_str, "%hhu", &prefixlen); |
3514 | if (r != 1) { | |
3515 | log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str); | |
3516 | continue; | |
3517 | } | |
c4a03a56 | 3518 | |
1f68f772 ZJS |
3519 | r = in_addr_from_string_auto(address_str, &family, &address); |
3520 | if (r < 0) { | |
3521 | log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str); | |
3522 | continue; | |
c4a03a56 | 3523 | } |
c4a03a56 | 3524 | |
1f68f772 ZJS |
3525 | r = address_add(link, family, &address, prefixlen, NULL); |
3526 | if (r < 0) | |
3527 | return log_link_error_errno(link, r, "Failed to add address: %m"); | |
3528 | } | |
74544b4e | 3529 | |
1f68f772 ZJS |
3530 | for (const char *p = routes; p; ) { |
3531 | _cleanup_(sd_event_source_unrefp) sd_event_source *expire = NULL; | |
3532 | _cleanup_(route_freep) Route *tmp = NULL; | |
3533 | _cleanup_free_ char *route_str = NULL; | |
3534 | char *prefixlen_str; | |
3535 | Route *route; | |
f703cc2c | 3536 | |
1f68f772 ZJS |
3537 | r = extract_first_word(&p, &route_str, NULL, 0); |
3538 | if (r < 0) | |
3539 | log_link_debug_errno(link, r, "failed to parse ROUTES: %m"); | |
3540 | if (r <= 0) | |
3541 | break; | |
c598ac76 | 3542 | |
1f68f772 ZJS |
3543 | prefixlen_str = strchr(route_str, '/'); |
3544 | if (!prefixlen_str) { | |
3545 | log_link_debug(link, "Failed to parse route %s", route_str); | |
3546 | continue; | |
3547 | } | |
3548 | *prefixlen_str++ = '\0'; | |
f703cc2c | 3549 | |
1f68f772 ZJS |
3550 | r = route_new(&tmp); |
3551 | if (r < 0) | |
3552 | return log_oom(); | |
f703cc2c | 3553 | |
1f68f772 ZJS |
3554 | r = sscanf(prefixlen_str, |
3555 | "%hhu/%hhu/%"SCNu32"/%"PRIu32"/"USEC_FMT, | |
3556 | &tmp->dst_prefixlen, | |
3557 | &tmp->tos, | |
3558 | &tmp->priority, | |
3559 | &tmp->table, | |
3560 | &tmp->lifetime); | |
3561 | if (r != 5) { | |
3562 | log_link_debug(link, | |
3563 | "Failed to parse destination prefix length, tos, priority, table or expiration %s", | |
3564 | prefixlen_str); | |
3565 | continue; | |
3566 | } | |
f1368755 | 3567 | |
1f68f772 ZJS |
3568 | r = in_addr_from_string_auto(route_str, &tmp->family, &tmp->dst); |
3569 | if (r < 0) { | |
3570 | log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str); | |
3571 | continue; | |
3572 | } | |
f703cc2c | 3573 | |
1f68f772 ZJS |
3574 | r = route_add(link, tmp, &route); |
3575 | if (r < 0) | |
3576 | return log_link_error_errno(link, r, "Failed to add route: %m"); | |
f703cc2c | 3577 | |
1f68f772 ZJS |
3578 | if (route->lifetime != USEC_INFINITY && !kernel_route_expiration_supported()) { |
3579 | r = sd_event_add_time(link->manager->event, &expire, | |
3580 | clock_boottime_or_monotonic(), | |
3581 | route->lifetime, 0, route_expire_handler, route); | |
f703cc2c | 3582 | if (r < 0) |
1f68f772 | 3583 | log_link_warning_errno(link, r, "Could not arm route expiration handler: %m"); |
f703cc2c | 3584 | } |
1f68f772 ZJS |
3585 | |
3586 | sd_event_source_unref(route->expire); | |
3587 | route->expire = TAKE_PTR(expire); | |
f703cc2c TG |
3588 | } |
3589 | ||
0bc70f1d TG |
3590 | if (dhcp4_address) { |
3591 | r = in_addr_from_string(AF_INET, dhcp4_address, &address); | |
3592 | if (r < 0) { | |
b68d26b8 | 3593 | log_link_debug_errno(link, r, "Failed to parse DHCPv4 address %s: %m", dhcp4_address); |
0bc70f1d TG |
3594 | goto dhcp4_address_fail; |
3595 | } | |
3596 | ||
b1c626f6 | 3597 | r = sd_dhcp_client_new(&link->dhcp_client, link->network ? link->network->dhcp_anonymize : 0); |
0bc70f1d | 3598 | if (r < 0) |
b68d26b8 | 3599 | return log_link_error_errno(link, r, "Failed to create DHCPv4 client: %m"); |
0bc70f1d | 3600 | |
1b43e246 DS |
3601 | r = sd_dhcp_client_attach_event(link->dhcp_client, NULL, 0); |
3602 | if (r < 0) | |
3603 | return log_link_error_errno(link, r, "Failed to attach DHCPv4 event: %m"); | |
3604 | ||
0bc70f1d TG |
3605 | r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in); |
3606 | if (r < 0) | |
b68d26b8 | 3607 | return log_link_error_errno(link, r, "Failed to set initial DHCPv4 address %s: %m", dhcp4_address); |
0bc70f1d TG |
3608 | } |
3609 | ||
3610 | dhcp4_address_fail: | |
3611 | ||
3612 | if (ipv4ll_address) { | |
3613 | r = in_addr_from_string(AF_INET, ipv4ll_address, &address); | |
3614 | if (r < 0) { | |
b68d26b8 | 3615 | log_link_debug_errno(link, r, "Failed to parse IPv4LL address %s: %m", ipv4ll_address); |
0bc70f1d TG |
3616 | goto ipv4ll_address_fail; |
3617 | } | |
3618 | ||
3619 | r = sd_ipv4ll_new(&link->ipv4ll); | |
3620 | if (r < 0) | |
b68d26b8 | 3621 | return log_link_error_errno(link, r, "Failed to create IPv4LL client: %m"); |
0bc70f1d | 3622 | |
1b43e246 DS |
3623 | r = sd_ipv4ll_attach_event(link->ipv4ll, NULL, 0); |
3624 | if (r < 0) | |
3625 | return log_link_error_errno(link, r, "Failed to attach IPv4LL event: %m"); | |
3626 | ||
0bc70f1d TG |
3627 | r = sd_ipv4ll_set_address(link->ipv4ll, &address.in); |
3628 | if (r < 0) | |
b68d26b8 | 3629 | return log_link_error_errno(link, r, "Failed to set initial IPv4LL address %s: %m", ipv4ll_address); |
0bc70f1d TG |
3630 | } |
3631 | ||
3632 | ipv4ll_address_fail: | |
3633 | ||
c4a03a56 TG |
3634 | return 0; |
3635 | } | |
3636 | ||
1c4baffc | 3637 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
51517f9e | 3638 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
505f8da7 | 3639 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; |
51517f9e | 3640 | Link *link; |
5a937ea2 | 3641 | int r; |
505f8da7 TG |
3642 | |
3643 | assert(m); | |
fbbeb65a | 3644 | assert(m->rtnl); |
505f8da7 TG |
3645 | assert(message); |
3646 | assert(ret); | |
3647 | ||
3648 | r = link_new(m, message, ret); | |
3649 | if (r < 0) | |
3650 | return r; | |
3651 | ||
3652 | link = *ret; | |
3653 | ||
6a7a4e4d | 3654 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 3655 | |
c4a03a56 TG |
3656 | r = link_load(link); |
3657 | if (r < 0) | |
3658 | return r; | |
3659 | ||
bf331d87 YW |
3660 | if (path_is_read_only_fs("/sys") <= 0) { |
3661 | /* udev should be around */ | |
ae06ab10 | 3662 | sprintf(ifindex_str, "n%d", link->ifindex); |
51517f9e YW |
3663 | r = sd_device_new_from_device_id(&device, ifindex_str); |
3664 | if (r < 0) { | |
4d59e14f YW |
3665 | log_link_warning_errno(link, r, "Could not find device, waiting for device initialization: %m"); |
3666 | return 0; | |
5c416fc4 | 3667 | } |
505f8da7 | 3668 | |
5a937ea2 | 3669 | r = sd_device_get_is_initialized(device); |
51517f9e | 3670 | if (r < 0) { |
bf331d87 | 3671 | log_link_warning_errno(link, r, "Could not determine whether the device is initialized: %m"); |
51517f9e YW |
3672 | goto failed; |
3673 | } | |
5a937ea2 | 3674 | if (r == 0) { |
505f8da7 | 3675 | /* not yet ready */ |
79008bdd | 3676 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 3677 | return 0; |
3c4cb064 | 3678 | } |
505f8da7 | 3679 | |
299ad32d YW |
3680 | r = device_is_renaming(device); |
3681 | if (r < 0) { | |
bf331d87 | 3682 | log_link_warning_errno(link, r, "Failed to determine the device is being renamed: %m"); |
299ad32d YW |
3683 | goto failed; |
3684 | } | |
3685 | if (r > 0) { | |
bf331d87 | 3686 | log_link_debug(link, "Interface is being renamed, pending initialization."); |
299ad32d YW |
3687 | return 0; |
3688 | } | |
3689 | ||
4f561e8e TG |
3690 | r = link_initialized(link, device); |
3691 | if (r < 0) | |
5c416fc4 | 3692 | goto failed; |
4f561e8e | 3693 | } else { |
e6bf7774 | 3694 | r = link_initialized_and_synced(link); |
4f561e8e | 3695 | if (r < 0) |
5c416fc4 | 3696 | goto failed; |
4f561e8e | 3697 | } |
505f8da7 | 3698 | |
a748b692 | 3699 | return 0; |
5c416fc4 TG |
3700 | failed: |
3701 | link_enter_failed(link); | |
3702 | return r; | |
a748b692 TG |
3703 | } |
3704 | ||
c601ebf7 | 3705 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
e7ab854c TG |
3706 | int r; |
3707 | ||
3708 | assert(link); | |
3709 | ||
3710 | log_link_info(link, "Gained IPv6LL"); | |
3711 | ||
c601ebf7 | 3712 | link->ipv6ll_address = *address; |
e7ab854c TG |
3713 | link_check_ready(link); |
3714 | ||
b9ea3d2e | 3715 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
e7ab854c TG |
3716 | r = link_acquire_ipv6_conf(link); |
3717 | if (r < 0) { | |
3718 | link_enter_failed(link); | |
3719 | return r; | |
3720 | } | |
3721 | } | |
3722 | ||
3723 | return 0; | |
3724 | } | |
3725 | ||
9c0a72f9 TG |
3726 | static int link_carrier_gained(Link *link) { |
3727 | int r; | |
3728 | ||
3729 | assert(link); | |
3730 | ||
0894cfe4 | 3731 | r = wifi_get_info(link); |
8d968fdd YW |
3732 | if (r < 0) |
3733 | return r; | |
3734 | if (r > 0) { | |
572b21d9 YW |
3735 | r = link_reconfigure_internal(link, NULL, false); |
3736 | if (r < 0) { | |
3737 | link_enter_failed(link); | |
8d968fdd | 3738 | return r; |
572b21d9 | 3739 | } |
8d968fdd YW |
3740 | } |
3741 | ||
b9ea3d2e | 3742 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
9c0a72f9 TG |
3743 | r = link_acquire_conf(link); |
3744 | if (r < 0) { | |
3745 | link_enter_failed(link); | |
3746 | return r; | |
3747 | } | |
6fc25497 | 3748 | |
b425c3ae | 3749 | link_set_state(link, LINK_STATE_CONFIGURING); |
289e6774 | 3750 | r = link_request_set_addresses(link); |
6fc25497 SS |
3751 | if (r < 0) |
3752 | return r; | |
9c0a72f9 TG |
3753 | } |
3754 | ||
0d4ad91d AR |
3755 | r = link_handle_bound_by_list(link); |
3756 | if (r < 0) | |
3757 | return r; | |
3758 | ||
1f241589 YW |
3759 | if (!link->bridge_mdb_configured) { |
3760 | r = link_set_bridge_mdb(link); | |
3761 | if (r < 0) | |
3762 | return r; | |
3763 | } | |
3764 | ||
3765 | if (streq_ptr(link->kind, "bridge")) { | |
3766 | Link *slave; | |
3767 | ||
3768 | SET_FOREACH(slave, link->slaves) { | |
3769 | if (slave->bridge_mdb_configured) | |
3770 | continue; | |
3771 | ||
3772 | r = link_set_bridge_mdb(slave); | |
3773 | if (r < 0) | |
3774 | link_enter_failed(slave); | |
3775 | } | |
3776 | } | |
3db468ea | 3777 | |
9c0a72f9 TG |
3778 | return 0; |
3779 | } | |
3780 | ||
3781 | static int link_carrier_lost(Link *link) { | |
3782 | int r; | |
3783 | ||
3784 | assert(link); | |
3785 | ||
25e992ba | 3786 | if (link->network && link->network->ignore_carrier_loss) |
93b4dab5 SS |
3787 | return 0; |
3788 | ||
fbdb6605 | 3789 | /* Some devices reset itself while setting the MTU. This causes the DHCP client fall into a loop. |
55dc8c4a YW |
3790 | * setting_mtu keep track whether the device got reset because of setting MTU and does not drop the |
3791 | * configuration and stop the clients as well. */ | |
97e7fb39 SS |
3792 | if (link->setting_mtu) |
3793 | return 0; | |
3794 | ||
95355a28 | 3795 | r = link_stop_clients(link, false); |
9c0a72f9 TG |
3796 | if (r < 0) { |
3797 | link_enter_failed(link); | |
3798 | return r; | |
3799 | } | |
3800 | ||
28464ae0 SS |
3801 | if (link_dhcp4_server_enabled(link)) |
3802 | (void) sd_dhcp_server_stop(link->dhcp_server); | |
45a9eac9 | 3803 | |
3104883d SS |
3804 | r = link_drop_config(link); |
3805 | if (r < 0) | |
3806 | return r; | |
3807 | ||
2c7b826d | 3808 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
f258e948 | 3809 | log_link_debug(link, "State is %s, dropping config", link_state_to_string(link->state)); |
c436d553 MM |
3810 | r = link_drop_foreign_config(link); |
3811 | if (r < 0) | |
3812 | return r; | |
3813 | } | |
3104883d | 3814 | |
0d4ad91d AR |
3815 | r = link_handle_bound_by_list(link); |
3816 | if (r < 0) | |
3817 | return r; | |
3818 | ||
9c0a72f9 TG |
3819 | return 0; |
3820 | } | |
3821 | ||
3822 | int link_carrier_reset(Link *link) { | |
3823 | int r; | |
3824 | ||
3825 | assert(link); | |
3826 | ||
3827 | if (link_has_carrier(link)) { | |
3828 | r = link_carrier_lost(link); | |
3829 | if (r < 0) | |
3830 | return r; | |
3831 | ||
3832 | r = link_carrier_gained(link); | |
3833 | if (r < 0) | |
3834 | return r; | |
3835 | ||
6a7a4e4d | 3836 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
3837 | } |
3838 | ||
3839 | return 0; | |
3840 | } | |
3841 | ||
d236718c DS |
3842 | /* This is called every time an interface admin state changes to up; |
3843 | * specifically, when IFF_UP flag changes from unset to set */ | |
3844 | static int link_admin_state_up(Link *link) { | |
3845 | int r; | |
3846 | ||
3847 | /* We set the ipv6 mtu after the device mtu, but the kernel resets | |
3848 | * ipv6 mtu on NETDEV_UP, so we need to reset it. The check for | |
3849 | * ipv6_mtu_set prevents this from trying to set it too early before | |
3850 | * the link->network has been setup; we only need to reset it | |
3851 | * here if we've already set it during normal initialization. */ | |
3852 | if (link->ipv6_mtu_set) { | |
3853 | r = link_set_ipv6_mtu(link); | |
3854 | if (r < 0) | |
3855 | return r; | |
3856 | } | |
3857 | ||
3858 | return 0; | |
3859 | } | |
3860 | ||
1c4baffc | 3861 | int link_update(Link *link, sd_netlink_message *m) { |
572b21d9 | 3862 | _cleanup_strv_free_ char **s = NULL; |
c49b33ac | 3863 | struct ether_addr mac; |
ca4e095a | 3864 | const char *ifname; |
afe7fd56 | 3865 | uint32_t mtu; |
d236718c | 3866 | bool had_carrier, carrier_gained, carrier_lost, link_was_admin_up; |
bb262ef0 | 3867 | int old_master, r; |
22936833 | 3868 | |
dd3efc09 | 3869 | assert(link); |
b8941f74 | 3870 | assert(link->ifname); |
22936833 TG |
3871 | assert(m); |
3872 | ||
7619683b | 3873 | if (link->state == LINK_STATE_LINGER) { |
5238e957 | 3874 | log_link_info(link, "Link re-added"); |
289e6774 | 3875 | link_set_state(link, LINK_STATE_CONFIGURING); |
0d4ad91d AR |
3876 | |
3877 | r = link_new_carrier_maps(link); | |
3878 | if (r < 0) | |
3879 | return r; | |
7619683b TG |
3880 | } |
3881 | ||
1c4baffc | 3882 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 3883 | if (r >= 0 && !streq(ifname, link->ifname)) { |
30de2b89 | 3884 | Manager *manager = link->manager; |
b8941f74 | 3885 | |
30de2b89 | 3886 | log_link_info(link, "Interface name change detected, %s has been renamed to %s.", link->ifname, ifname); |
0d4ad91d | 3887 | |
30de2b89 YW |
3888 | link_drop(link); |
3889 | r = link_add(manager, m, &link); | |
3890 | if (r < 0) | |
3891 | return r; | |
b8941f74 TG |
3892 | } |
3893 | ||
572b21d9 YW |
3894 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); |
3895 | if (r >= 0) | |
3896 | strv_free_and_replace(link->alternative_names, s); | |
3897 | ||
1c4baffc | 3898 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
3899 | if (r >= 0 && mtu > 0) { |
3900 | link->mtu = mtu; | |
4e964aa0 | 3901 | if (link->original_mtu == 0) { |
afe7fd56 | 3902 | link->original_mtu = mtu; |
6a7a4e4d | 3903 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
3904 | } |
3905 | ||
3906 | if (link->dhcp_client) { | |
3c9b8860 TG |
3907 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
3908 | link->mtu); | |
fc95c359 YW |
3909 | if (r < 0) |
3910 | return log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); | |
afe7fd56 | 3911 | } |
7465dd22 PF |
3912 | |
3913 | if (link->radv) { | |
3914 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
3915 | if (r < 0) | |
3916 | return log_link_warning_errno(link, r, "Could not set MTU for Router Advertisement: %m"); | |
3917 | } | |
9842de0d | 3918 | } |
69629de9 | 3919 | |
e9189a1f TG |
3920 | /* The kernel may broadcast NEWLINK messages without the MAC address |
3921 | set, simply ignore them. */ | |
1c4baffc | 3922 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
807667f7 YW |
3923 | if (r >= 0 && memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN) != 0) { |
3924 | ||
3925 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN); | |
3926 | ||
3927 | log_link_debug(link, "Gained new MAC address: " | |
3928 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", | |
3929 | mac.ether_addr_octet[0], | |
3930 | mac.ether_addr_octet[1], | |
3931 | mac.ether_addr_octet[2], | |
3932 | mac.ether_addr_octet[3], | |
3933 | mac.ether_addr_octet[4], | |
3934 | mac.ether_addr_octet[5]); | |
3935 | ||
3936 | if (link->ipv4ll) { | |
3937 | bool restart = sd_ipv4ll_is_running(link->ipv4ll) > 0; | |
3938 | ||
3939 | if (restart) { | |
3940 | r = sd_ipv4ll_stop(link->ipv4ll); | |
6a7a4e4d | 3941 | if (r < 0) |
807667f7 | 3942 | return log_link_warning_errno(link, r, "Could not stop IPv4LL client: %m"); |
c49b33ac | 3943 | } |
c49b33ac | 3944 | |
807667f7 YW |
3945 | r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); |
3946 | if (r < 0) | |
3947 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
3948 | ||
3949 | if (restart) { | |
3950 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d | 3951 | if (r < 0) |
807667f7 YW |
3952 | return log_link_warning_errno(link, r, "Could not restart IPv4LL client: %m"); |
3953 | } | |
3954 | } | |
3955 | ||
3956 | if (link->dhcp_client) { | |
3957 | r = sd_dhcp_client_set_mac(link->dhcp_client, | |
3958 | (const uint8_t *) &link->mac, | |
3959 | sizeof (link->mac), | |
3960 | ARPHRD_ETHER); | |
3961 | if (r < 0) | |
3962 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
3963 | ||
3964 | r = dhcp4_set_client_identifier(link); | |
3965 | if (r < 0) | |
3966 | return log_link_warning_errno(link, r, "Could not set DHCP client identifier: %m"); | |
3967 | } | |
413708d1 | 3968 | |
807667f7 YW |
3969 | if (link->dhcp6_client) { |
3970 | const DUID* duid = link_get_duid(link); | |
3971 | bool restart = sd_dhcp6_client_is_running(link->dhcp6_client) > 0; | |
3972 | ||
3973 | if (restart) { | |
3974 | r = sd_dhcp6_client_stop(link->dhcp6_client); | |
fff1f40c | 3975 | if (r < 0) |
807667f7 | 3976 | return log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); |
c49b33ac | 3977 | } |
4138fb2c | 3978 | |
807667f7 YW |
3979 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, |
3980 | (const uint8_t *) &link->mac, | |
3981 | sizeof (link->mac), | |
3982 | ARPHRD_ETHER); | |
3983 | if (r < 0) | |
3984 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
8341a5c3 | 3985 | |
807667f7 YW |
3986 | if (link->network->iaid_set) { |
3987 | r = sd_dhcp6_client_set_iaid(link->dhcp6_client, link->network->iaid); | |
6a7a4e4d | 3988 | if (r < 0) |
807667f7 YW |
3989 | return log_link_warning_errno(link, r, "Could not update DHCPv6 IAID: %m"); |
3990 | } | |
3991 | ||
3992 | r = sd_dhcp6_client_set_duid(link->dhcp6_client, | |
3993 | duid->type, | |
3994 | duid->raw_data_len > 0 ? duid->raw_data : NULL, | |
3995 | duid->raw_data_len); | |
3996 | if (r < 0) | |
3997 | return log_link_warning_errno(link, r, "Could not update DHCPv6 DUID: %m"); | |
3998 | ||
3999 | if (restart) { | |
4000 | r = sd_dhcp6_client_start(link->dhcp6_client); | |
413708d1 | 4001 | if (r < 0) |
807667f7 | 4002 | return log_link_warning_errno(link, r, "Could not restart DHCPv6 client: %m"); |
4138fb2c | 4003 | } |
807667f7 | 4004 | } |
7465dd22 | 4005 | |
807667f7 YW |
4006 | if (link->radv) { |
4007 | bool restart = sd_radv_is_running(link->radv); | |
4008 | ||
4009 | if (restart) { | |
4010 | r = sd_radv_stop(link->radv); | |
7465dd22 | 4011 | if (r < 0) |
807667f7 | 4012 | return log_link_warning_errno(link, r, "Could not stop Router Advertisement: %m"); |
7465dd22 | 4013 | } |
420d2058 | 4014 | |
807667f7 YW |
4015 | r = sd_radv_set_mac(link->radv, &link->mac); |
4016 | if (r < 0) | |
4017 | return log_link_warning_errno(link, r, "Could not update MAC for Router Advertisement: %m"); | |
4018 | ||
4019 | if (restart) { | |
4020 | r = sd_radv_start(link->radv); | |
420d2058 | 4021 | if (r < 0) |
807667f7 | 4022 | return log_link_warning_errno(link, r, "Could not restart Router Advertisement: %m"); |
420d2058 | 4023 | } |
c49b33ac | 4024 | } |
807667f7 YW |
4025 | |
4026 | if (link->ndisc) { | |
4027 | r = sd_ndisc_set_mac(link->ndisc, &link->mac); | |
4028 | if (r < 0) | |
4029 | return log_link_warning_errno(link, r, "Could not update MAC for NDisc: %m"); | |
4030 | } | |
4f882b2a TG |
4031 | } |
4032 | ||
bb262ef0 YW |
4033 | old_master = link->master_ifindex; |
4034 | (void) sd_netlink_message_read_u32(m, IFLA_MASTER, (uint32_t *) &link->master_ifindex); | |
4035 | ||
d236718c | 4036 | link_was_admin_up = link->flags & IFF_UP; |
a61bb41c TG |
4037 | had_carrier = link_has_carrier(link); |
4038 | ||
bb262ef0 | 4039 | r = link_update_flags(link, m, old_master != link->master_ifindex); |
a61bb41c TG |
4040 | if (r < 0) |
4041 | return r; | |
4042 | ||
d236718c DS |
4043 | if (!link_was_admin_up && (link->flags & IFF_UP)) { |
4044 | log_link_info(link, "Link UP"); | |
4045 | ||
4046 | r = link_admin_state_up(link); | |
4047 | if (r < 0) | |
4048 | return r; | |
4049 | } else if (link_was_admin_up && !(link->flags & IFF_UP)) | |
4050 | log_link_info(link, "Link DOWN"); | |
4051 | ||
273eec24 LP |
4052 | r = link_update_lldp(link); |
4053 | if (r < 0) | |
4054 | return r; | |
4055 | ||
a61bb41c TG |
4056 | carrier_gained = !had_carrier && link_has_carrier(link); |
4057 | carrier_lost = had_carrier && !link_has_carrier(link); | |
4058 | ||
4059 | if (carrier_gained) { | |
6a7a4e4d | 4060 | log_link_info(link, "Gained carrier"); |
a61bb41c | 4061 | |
9c0a72f9 TG |
4062 | r = link_carrier_gained(link); |
4063 | if (r < 0) | |
4064 | return r; | |
a61bb41c | 4065 | } else if (carrier_lost) { |
6a7a4e4d | 4066 | log_link_info(link, "Lost carrier"); |
a61bb41c | 4067 | |
9c0a72f9 TG |
4068 | r = link_carrier_lost(link); |
4069 | if (r < 0) | |
a61bb41c | 4070 | return r; |
a61bb41c TG |
4071 | } |
4072 | ||
4073 | return 0; | |
dd3efc09 | 4074 | } |
fe8db0c5 | 4075 | |
b295beea LP |
4076 | static void print_link_hashmap(FILE *f, const char *prefix, Hashmap* h) { |
4077 | bool space = false; | |
b295beea LP |
4078 | Link *link; |
4079 | ||
4080 | assert(f); | |
4081 | assert(prefix); | |
4082 | ||
4083 | if (hashmap_isempty(h)) | |
4084 | return; | |
4085 | ||
0d536673 | 4086 | fputs(prefix, f); |
90e74a66 | 4087 | HASHMAP_FOREACH(link, h) { |
b295beea | 4088 | if (space) |
0d536673 | 4089 | fputc(' ', f); |
b295beea LP |
4090 | |
4091 | fprintf(f, "%i", link->ifindex); | |
4092 | space = true; | |
4093 | } | |
4094 | ||
0d536673 | 4095 | fputc('\n', f); |
b295beea LP |
4096 | } |
4097 | ||
64581765 | 4098 | static void link_save_dns(Link *link, FILE *f, struct in_addr_full **dns, unsigned n_dns, bool *space) { |
dddc8d1e | 4099 | for (unsigned j = 0; j < n_dns; j++) { |
e77bd3fd | 4100 | const char *str; |
15761549 | 4101 | |
64581765 YW |
4102 | if (dns[j]->ifindex != 0 && dns[j]->ifindex != link->ifindex) |
4103 | continue; | |
4104 | ||
e77bd3fd YW |
4105 | str = in_addr_full_to_string(dns[j]); |
4106 | if (!str) | |
15761549 | 4107 | continue; |
15761549 YW |
4108 | |
4109 | if (*space) | |
4110 | fputc(' ', f); | |
e77bd3fd | 4111 | fputs(str, f); |
15761549 YW |
4112 | *space = true; |
4113 | } | |
4114 | } | |
4115 | ||
d5e172d2 ZJS |
4116 | static void serialize_addresses( |
4117 | FILE *f, | |
4118 | const char *lvalue, | |
4119 | bool *space, | |
4120 | char **addresses, | |
4121 | sd_dhcp_lease *lease, | |
4122 | bool conditional, | |
ddb82ec2 | 4123 | sd_dhcp_lease_server_type what, |
d5e172d2 ZJS |
4124 | sd_dhcp6_lease *lease6, |
4125 | bool conditional6, | |
4126 | int (*lease6_get_addr)(sd_dhcp6_lease*, const struct in6_addr**), | |
4127 | int (*lease6_get_fqdn)(sd_dhcp6_lease*, char ***)) { | |
4128 | int r; | |
4129 | ||
4130 | bool _space = false; | |
4131 | if (!space) | |
4132 | space = &_space; | |
4133 | ||
4134 | if (lvalue) | |
4135 | fprintf(f, "%s=", lvalue); | |
4136 | fputstrv(f, addresses, NULL, space); | |
4137 | ||
4138 | if (lease && conditional) { | |
4139 | const struct in_addr *lease_addresses; | |
4140 | ||
4141 | r = sd_dhcp_lease_get_servers(lease, what, &lease_addresses); | |
4142 | if (r > 0) | |
d8bff5cc | 4143 | serialize_in_addrs(f, lease_addresses, r, space, in4_addr_is_non_local); |
d5e172d2 ZJS |
4144 | } |
4145 | ||
4146 | if (lease6 && conditional6 && lease6_get_addr) { | |
4147 | const struct in6_addr *in6_addrs; | |
4148 | ||
4149 | r = lease6_get_addr(lease6, &in6_addrs); | |
d8bff5cc ZJS |
4150 | if (r > 0) |
4151 | serialize_in6_addrs(f, in6_addrs, r, space); | |
d5e172d2 ZJS |
4152 | } |
4153 | ||
4154 | if (lease6 && conditional6 && lease6_get_fqdn) { | |
4155 | char **in6_hosts; | |
4156 | ||
4157 | r = lease6_get_fqdn(lease6, &in6_hosts); | |
4158 | if (r > 0) | |
4159 | fputstrv(f, in6_hosts, NULL, space); | |
4160 | } | |
4161 | ||
4162 | if (lvalue) | |
4163 | fputc('\n', f); | |
4164 | } | |
4165 | ||
fe8db0c5 | 4166 | int link_save(Link *link) { |
d361b373 | 4167 | const char *admin_state, *oper_state, *carrier_state, *address_state; |
68a8723c | 4168 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 | 4169 | _cleanup_fclose_ FILE *f = NULL; |
c1eb9872 | 4170 | Route *route; |
18d8a2cf | 4171 | Address *a; |
fe8db0c5 TG |
4172 | int r; |
4173 | ||
4174 | assert(link); | |
4175 | assert(link->state_file); | |
68a8723c | 4176 | assert(link->lease_file); |
bbf7c048 TG |
4177 | assert(link->manager); |
4178 | ||
370e9930 | 4179 | if (link->state == LINK_STATE_LINGER) { |
6990fb6b | 4180 | (void) unlink(link->state_file); |
370e9930 TG |
4181 | return 0; |
4182 | } | |
4183 | ||
34437b4f LP |
4184 | link_lldp_save(link); |
4185 | ||
deb2e523 TG |
4186 | admin_state = link_state_to_string(link->state); |
4187 | assert(admin_state); | |
4188 | ||
e375dcde TG |
4189 | oper_state = link_operstate_to_string(link->operstate); |
4190 | assert(oper_state); | |
deb2e523 | 4191 | |
ac999bf0 YW |
4192 | carrier_state = link_carrier_state_to_string(link->carrier_state); |
4193 | assert(carrier_state); | |
4194 | ||
4195 | address_state = link_address_state_to_string(link->address_state); | |
4196 | assert(address_state); | |
4197 | ||
fe8db0c5 TG |
4198 | r = fopen_temporary(link->state_file, &f, &temp_path); |
4199 | if (r < 0) | |
6a7a4e4d | 4200 | goto fail; |
fe8db0c5 | 4201 | |
5512a963 | 4202 | (void) fchmod(fileno(f), 0644); |
fe8db0c5 TG |
4203 | |
4204 | fprintf(f, | |
4205 | "# This is private data. Do not parse.\n" | |
deb2e523 | 4206 | "ADMIN_STATE=%s\n" |
ac999bf0 YW |
4207 | "OPER_STATE=%s\n" |
4208 | "CARRIER_STATE=%s\n" | |
4209 | "ADDRESS_STATE=%s\n", | |
4210 | admin_state, oper_state, carrier_state, address_state); | |
fe8db0c5 | 4211 | |
bcb7a07e | 4212 | if (link->network) { |
fe0e16db YW |
4213 | char **dhcp6_domains = NULL, **dhcp_domains = NULL; |
4214 | const char *dhcp_domainname = NULL, *p; | |
fe0e16db | 4215 | bool space; |
07bdc70d | 4216 | |
c1a38904 MTL |
4217 | fprintf(f, "REQUIRED_FOR_ONLINE=%s\n", |
4218 | yes_no(link->network->required_for_online)); | |
4219 | ||
d5e172d2 ZJS |
4220 | LinkOperationalStateRange st = link->network->required_operstate_for_online; |
4221 | fprintf(f, "REQUIRED_OPER_STATE_FOR_ONLINE=%s%s%s\n", | |
4222 | strempty(link_operstate_to_string(st.min)), | |
4223 | st.max != LINK_OPERSTATE_RANGE_DEFAULT.max ? ":" : "", | |
4224 | st.max != LINK_OPERSTATE_RANGE_DEFAULT.max ? strempty(link_operstate_to_string(st.max)) : ""); | |
4ac77d63 | 4225 | |
adc5b2e2 TG |
4226 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
4227 | ||
d5e172d2 ZJS |
4228 | /************************************************************/ |
4229 | ||
0d536673 | 4230 | fputs("DNS=", f); |
ea352b40 | 4231 | space = false; |
15761549 | 4232 | if (link->n_dns != (unsigned) -1) |
64581765 | 4233 | link_save_dns(link, f, link->dns, link->n_dns, &space); |
15761549 | 4234 | else |
64581765 | 4235 | link_save_dns(link, f, link->network->dns, link->network->n_dns, &space); |
d5314fff | 4236 | |
d5e172d2 ZJS |
4237 | serialize_addresses(f, NULL, &space, |
4238 | NULL, | |
4239 | link->dhcp_lease, | |
4240 | link->network->dhcp_use_dns, | |
ddb82ec2 | 4241 | SD_DHCP_LEASE_DNS, |
1633c457 | 4242 | link->dhcp6_lease, |
d5e172d2 ZJS |
4243 | link->network->dhcp6_use_dns, |
4244 | sd_dhcp6_lease_get_dns, | |
4245 | NULL); | |
1e7a0e21 | 4246 | |
a8c10331 | 4247 | /* Make sure to flush out old entries before we use the NDisc data */ |
1e7a0e21 LP |
4248 | ndisc_vacuum(link); |
4249 | ||
b296797f | 4250 | if (link->network->ipv6_accept_ra_use_dns && link->ndisc_rdnss) { |
1e7a0e21 LP |
4251 | NDiscRDNSS *dd; |
4252 | ||
90e74a66 | 4253 | SET_FOREACH(dd, link->ndisc_rdnss) |
d8bff5cc | 4254 | serialize_in6_addrs(f, &dd->address, 1, &space); |
299d578f SS |
4255 | } |
4256 | ||
4257 | fputc('\n', f); | |
4258 | ||
d5e172d2 ZJS |
4259 | /************************************************************/ |
4260 | ||
4261 | serialize_addresses(f, "NTP", NULL, | |
4262 | link->ntp ?: link->network->ntp, | |
4263 | link->dhcp_lease, | |
4264 | link->network->dhcp_use_ntp, | |
ddb82ec2 | 4265 | SD_DHCP_LEASE_NTP, |
1633c457 | 4266 | link->dhcp6_lease, |
d5e172d2 ZJS |
4267 | link->network->dhcp6_use_ntp, |
4268 | sd_dhcp6_lease_get_ntp_addrs, | |
4269 | sd_dhcp6_lease_get_ntp_fqdn); | |
4270 | ||
4271 | serialize_addresses(f, "SIP", NULL, | |
2a71d57f | 4272 | NULL, |
d5e172d2 ZJS |
4273 | link->dhcp_lease, |
4274 | link->network->dhcp_use_sip, | |
ddb82ec2 | 4275 | SD_DHCP_LEASE_SIP, |
2a71d57f | 4276 | NULL, false, NULL, NULL); |
d5e172d2 ZJS |
4277 | |
4278 | /************************************************************/ | |
bd8f6538 | 4279 | |
b2a81c0b | 4280 | if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
b85bc551 | 4281 | if (link->dhcp_lease) { |
b2a81c0b | 4282 | (void) sd_dhcp_lease_get_domainname(link->dhcp_lease, &dhcp_domainname); |
b85bc551 DW |
4283 | (void) sd_dhcp_lease_get_search_domains(link->dhcp_lease, &dhcp_domains); |
4284 | } | |
1633c457 YW |
4285 | if (link->dhcp6_lease) |
4286 | (void) sd_dhcp6_lease_get_domains(link->dhcp6_lease, &dhcp6_domains); | |
07bdc70d PF |
4287 | } |
4288 | ||
fe0e16db YW |
4289 | fputs("DOMAINS=", f); |
4290 | space = false; | |
90e74a66 | 4291 | ORDERED_SET_FOREACH(p, link->search_domains ?: link->network->search_domains) |
fe0e16db | 4292 | fputs_with_space(f, p, NULL, &space); |
07bdc70d | 4293 | |
1e7a0e21 | 4294 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) { |
1e7a0e21 LP |
4295 | if (dhcp_domainname) |
4296 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
4297 | if (dhcp_domains) |
4298 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
4299 | if (dhcp6_domains) |
4300 | fputstrv(f, dhcp6_domains, NULL, &space); | |
a0cd6da5 YW |
4301 | } |
4302 | ||
4303 | if (link->network->ipv6_accept_ra_use_domains == DHCP_USE_DOMAINS_YES) { | |
4304 | NDiscDNSSL *dd; | |
1e7a0e21 | 4305 | |
90e74a66 | 4306 | SET_FOREACH(dd, link->ndisc_dnssl) |
1e7a0e21 LP |
4307 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); |
4308 | } | |
b2a81c0b | 4309 | |
0d536673 | 4310 | fputc('\n', f); |
6192b846 | 4311 | |
d5e172d2 ZJS |
4312 | /************************************************************/ |
4313 | ||
fe0e16db YW |
4314 | fputs("ROUTE_DOMAINS=", f); |
4315 | space = false; | |
90e74a66 | 4316 | ORDERED_SET_FOREACH(p, link->route_domains ?: link->network->route_domains) |
fe0e16db | 4317 | fputs_with_space(f, p, NULL, &space); |
b2a81c0b | 4318 | |
1e7a0e21 | 4319 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE) { |
1e7a0e21 LP |
4320 | if (dhcp_domainname) |
4321 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
4322 | if (dhcp_domains) |
4323 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
4324 | if (dhcp6_domains) |
4325 | fputstrv(f, dhcp6_domains, NULL, &space); | |
a0cd6da5 YW |
4326 | } |
4327 | ||
4328 | if (link->network->ipv6_accept_ra_use_domains == DHCP_USE_DOMAINS_ROUTE) { | |
4329 | NDiscDNSSL *dd; | |
1e7a0e21 | 4330 | |
90e74a66 | 4331 | SET_FOREACH(dd, link->ndisc_dnssl) |
1e7a0e21 LP |
4332 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); |
4333 | } | |
b2a81c0b | 4334 | |
0d536673 | 4335 | fputc('\n', f); |
67272d15 | 4336 | |
d5e172d2 ZJS |
4337 | /************************************************************/ |
4338 | ||
3c9b8860 | 4339 | fprintf(f, "LLMNR=%s\n", |
15761549 | 4340 | resolve_support_to_string(link->llmnr >= 0 ? link->llmnr : link->network->llmnr)); |
d5e172d2 ZJS |
4341 | |
4342 | /************************************************************/ | |
4343 | ||
aaa297d4 | 4344 | fprintf(f, "MDNS=%s\n", |
15761549 | 4345 | resolve_support_to_string(link->mdns >= 0 ? link->mdns : link->network->mdns)); |
15761549 | 4346 | |
d5e172d2 ZJS |
4347 | /************************************************************/ |
4348 | ||
4349 | int dns_default_route = | |
4350 | link->dns_default_route >= 0 ? link->dns_default_route : | |
4351 | link->network->dns_default_route; | |
4352 | if (dns_default_route >= 0) | |
4353 | fprintf(f, "DNS_DEFAULT_ROUTE=%s\n", yes_no(dns_default_route)); | |
4354 | ||
4355 | /************************************************************/ | |
4356 | ||
4357 | DnsOverTlsMode dns_over_tls_mode = | |
4358 | link->dns_over_tls_mode != _DNS_OVER_TLS_MODE_INVALID ? link->dns_over_tls_mode : | |
4359 | link->network->dns_over_tls_mode; | |
4360 | if (dns_over_tls_mode != _DNS_OVER_TLS_MODE_INVALID) | |
4361 | fprintf(f, "DNS_OVER_TLS=%s\n", dns_over_tls_mode_to_string(dns_over_tls_mode)); | |
4362 | ||
4363 | /************************************************************/ | |
4364 | ||
4365 | DnssecMode dnssec_mode = | |
4366 | link->dnssec_mode != _DNSSEC_MODE_INVALID ? link->dnssec_mode : | |
4367 | link->network->dnssec_mode; | |
4368 | if (dnssec_mode != _DNSSEC_MODE_INVALID) | |
4369 | fprintf(f, "DNSSEC=%s\n", dnssec_mode_to_string(dnssec_mode)); | |
4370 | ||
4371 | /************************************************************/ | |
4372 | ||
4373 | Set *nta_anchors = link->dnssec_negative_trust_anchors; | |
4374 | if (set_isempty(nta_anchors)) | |
4375 | nta_anchors = link->network->dnssec_negative_trust_anchors; | |
4376 | ||
4377 | if (!set_isempty(nta_anchors)) { | |
8a516214 LP |
4378 | const char *n; |
4379 | ||
0d536673 | 4380 | fputs("DNSSEC_NTA=", f); |
8a516214 | 4381 | space = false; |
90e74a66 | 4382 | SET_FOREACH(n, nta_anchors) |
d390f8ef | 4383 | fputs_with_space(f, n, NULL, &space); |
0d536673 | 4384 | fputc('\n', f); |
8a516214 LP |
4385 | } |
4386 | ||
d5e172d2 ZJS |
4387 | /************************************************************/ |
4388 | ||
0d536673 | 4389 | fputs("ADDRESSES=", f); |
e7780c8d | 4390 | space = false; |
90e74a66 | 4391 | SET_FOREACH(a, link->addresses) { |
e7780c8d TG |
4392 | _cleanup_free_ char *address_str = NULL; |
4393 | ||
4394 | r = in_addr_to_string(a->family, &a->in_addr, &address_str); | |
4395 | if (r < 0) | |
4396 | goto fail; | |
4397 | ||
e7780c8d TG |
4398 | fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); |
4399 | space = true; | |
4400 | } | |
0d536673 | 4401 | fputc('\n', f); |
c1eb9872 | 4402 | |
d5e172d2 ZJS |
4403 | /************************************************************/ |
4404 | ||
0d536673 | 4405 | fputs("ROUTES=", f); |
c1eb9872 | 4406 | space = false; |
90e74a66 | 4407 | SET_FOREACH(route, link->routes) { |
c1eb9872 TG |
4408 | _cleanup_free_ char *route_str = NULL; |
4409 | ||
4410 | r = in_addr_to_string(route->family, &route->dst, &route_str); | |
4411 | if (r < 0) | |
4412 | goto fail; | |
4413 | ||
ecc3f340 ZJS |
4414 | fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%"PRIu32"/"USEC_FMT, |
4415 | space ? " " : "", route_str, | |
f833694d | 4416 | route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime); |
c1eb9872 TG |
4417 | space = true; |
4418 | } | |
4419 | ||
0d536673 | 4420 | fputc('\n', f); |
bcb7a07e | 4421 | } |
7374f9d8 | 4422 | |
b295beea LP |
4423 | print_link_hashmap(f, "CARRIER_BOUND_TO=", link->bound_to_links); |
4424 | print_link_hashmap(f, "CARRIER_BOUND_BY=", link->bound_by_links); | |
0d4ad91d | 4425 | |
8eb9058d | 4426 | if (link->dhcp_lease) { |
bd91b83e | 4427 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 4428 | if (r < 0) |
c2d6bd61 | 4429 | goto fail; |
fe8db0c5 | 4430 | |
7374f9d8 | 4431 | fprintf(f, |
b0e39c82 TG |
4432 | "DHCP_LEASE=%s\n", |
4433 | link->lease_file); | |
deb2e523 | 4434 | } else |
6990fb6b | 4435 | (void) unlink(link->lease_file); |
fe8db0c5 | 4436 | |
0bc70f1d TG |
4437 | if (link->ipv4ll) { |
4438 | struct in_addr address; | |
4439 | ||
4440 | r = sd_ipv4ll_get_address(link->ipv4ll, &address); | |
4441 | if (r >= 0) { | |
0d536673 | 4442 | fputs("IPV4LL_ADDRESS=", f); |
072320ea | 4443 | serialize_in_addrs(f, &address, 1, false, NULL); |
0d536673 | 4444 | fputc('\n', f); |
0bc70f1d TG |
4445 | } |
4446 | } | |
4447 | ||
7e738e7b SS |
4448 | if (link->dhcp6_client) { |
4449 | _cleanup_free_ char *duid = NULL; | |
4450 | uint32_t iaid; | |
4451 | ||
4452 | r = sd_dhcp6_client_get_iaid(link->dhcp6_client, &iaid); | |
4453 | if (r >= 0) | |
4454 | fprintf(f, "DHCP6_CLIENT_IAID=0x%x\n", iaid); | |
4455 | ||
4456 | r = sd_dhcp6_client_duid_as_string(link->dhcp6_client, &duid); | |
4457 | if (r >= 0) | |
4458 | fprintf(f, "DHCP6_CLIENT_DUID=%s\n", duid); | |
4459 | } | |
18d8a2cf | 4460 | |
c2d6bd61 LP |
4461 | r = fflush_and_check(f); |
4462 | if (r < 0) | |
4463 | goto fail; | |
fe8db0c5 | 4464 | |
c2d6bd61 | 4465 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 4466 | r = -errno; |
c2d6bd61 | 4467 | goto fail; |
fe8db0c5 TG |
4468 | } |
4469 | ||
c2d6bd61 | 4470 | return 0; |
dacd6cee | 4471 | |
c2d6bd61 | 4472 | fail: |
6a7a4e4d | 4473 | (void) unlink(link->state_file); |
6a7a4e4d LP |
4474 | if (temp_path) |
4475 | (void) unlink(temp_path); | |
4476 | ||
dacd6cee | 4477 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
4478 | } |
4479 | ||
84de38c5 TG |
4480 | /* The serialized state in /run is no longer up-to-date. */ |
4481 | void link_dirty(Link *link) { | |
4482 | int r; | |
4483 | ||
4484 | assert(link); | |
4485 | ||
0c241a37 SS |
4486 | /* mark manager dirty as link is dirty */ |
4487 | manager_dirty(link->manager); | |
4488 | ||
de7fef4b | 4489 | r = set_ensure_put(&link->manager->dirty_links, NULL, link); |
0c241a37 | 4490 | if (r <= 0) |
de7fef4b | 4491 | /* Ignore allocation errors and don't take another ref if the link was already dirty */ |
84de38c5 | 4492 | return; |
84de38c5 TG |
4493 | link_ref(link); |
4494 | } | |
4495 | ||
4496 | /* The serialized state in /run is up-to-date */ | |
4497 | void link_clean(Link *link) { | |
4498 | assert(link); | |
4499 | assert(link->manager); | |
4500 | ||
1046bf9b | 4501 | link_unref(set_remove(link->manager->dirty_links, link)); |
84de38c5 TG |
4502 | } |
4503 | ||
c2a65950 YW |
4504 | int link_save_and_clean(Link *link) { |
4505 | int r; | |
4506 | ||
4507 | r = link_save(link); | |
4508 | if (r < 0) | |
4509 | return r; | |
4510 | ||
4511 | link_clean(link); | |
4512 | return 0; | |
4513 | } | |
4514 | ||
fe8db0c5 | 4515 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 4516 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 4517 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 4518 | [LINK_STATE_CONFIGURING] = "configuring", |
fe8db0c5 | 4519 | [LINK_STATE_CONFIGURED] = "configured", |
57bd6899 | 4520 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 4521 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 4522 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
4523 | }; |
4524 | ||
4525 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
5ecb131d YW |
4526 | |
4527 | int log_link_message_full_errno(Link *link, sd_netlink_message *m, int level, int err, const char *msg) { | |
4528 | const char *err_msg = NULL; | |
4529 | ||
4530 | (void) sd_netlink_message_read_string(m, NLMSGERR_ATTR_MSG, &err_msg); | |
d157714b YW |
4531 | return log_link_full_errno(link, level, err, |
4532 | "%s: %s%s%s%m", | |
4533 | msg, | |
4534 | strempty(err_msg), | |
4535 | err_msg && !endswith(err_msg, ".") ? "." : "", | |
4536 | err_msg ? " " : ""); | |
5ecb131d | 4537 | } |