]>
Commit | Line | Data |
---|---|---|
db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
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> |
8430841b | 7 | #include <sys/socket.h> |
4cc7a82c | 8 | #include <unistd.h> |
f579559b | 9 | |
b5efdb8a | 10 | #include "alloc-util.h" |
c0267a59 | 11 | #include "batadv.h" |
737f1405 YW |
12 | #include "bond.h" |
13 | #include "bridge.h" | |
1346b1f0 | 14 | #include "bus-util.h" |
3be9d62a YW |
15 | #include "device-private.h" |
16 | #include "device-util.h" | |
27dfc982 | 17 | #include "dhcp-identifier.h" |
bd91b83e | 18 | #include "dhcp-lease-internal.h" |
686d13b9 | 19 | #include "env-file.h" |
4bb7cc82 | 20 | #include "ethtool-util.h" |
3ffd4af2 | 21 | #include "fd-util.h" |
cf1d700d | 22 | #include "fileio.h" |
af664001 | 23 | #include "fs-util.h" |
737f1405 | 24 | #include "ipvlan.h" |
ef118d00 | 25 | #include "missing_network.h" |
cf1d700d | 26 | #include "netlink-util.h" |
c6f7c917 | 27 | #include "network-internal.h" |
fb486c90 | 28 | #include "networkd-address-label.h" |
093e3533 | 29 | #include "networkd-address.h" |
9671ae9d | 30 | #include "networkd-bridge-fdb.h" |
ff9e0783 | 31 | #include "networkd-bridge-mdb.h" |
3ddcbeea | 32 | #include "networkd-can.h" |
8fcf1d61 | 33 | #include "networkd-dhcp-server.h" |
ca5ad760 YW |
34 | #include "networkd-dhcp4.h" |
35 | #include "networkd-dhcp6.h" | |
36 | #include "networkd-ipv4ll.h" | |
76c5a0f2 | 37 | #include "networkd-ipv6-proxy-ndp.h" |
6a1af3d4 YW |
38 | #include "networkd-link-bus.h" |
39 | #include "networkd-link.h" | |
8e1ad1ea | 40 | #include "networkd-lldp-tx.h" |
23f53b99 | 41 | #include "networkd-manager.h" |
1e7a0e21 | 42 | #include "networkd-ndisc.h" |
e4a71bf3 | 43 | #include "networkd-neighbor.h" |
75156ccb | 44 | #include "networkd-nexthop.h" |
19d9a5ad | 45 | #include "networkd-queue.h" |
7465dd22 | 46 | #include "networkd-radv.h" |
bce67bbe | 47 | #include "networkd-routing-policy-rule.h" |
0fa8ee6c | 48 | #include "networkd-setlink.h" |
19d9a5ad | 49 | #include "networkd-sriov.h" |
3b5a4fc6 | 50 | #include "networkd-state-file.h" |
19d9a5ad | 51 | #include "networkd-sysctl.h" |
8d968fdd | 52 | #include "networkd-wifi.h" |
cf1d700d TG |
53 | #include "set.h" |
54 | #include "socket-util.h" | |
bf331d87 | 55 | #include "stat-util.h" |
15a5e950 | 56 | #include "stdio-util.h" |
8b43440b | 57 | #include "string-table.h" |
51517f9e | 58 | #include "strv.h" |
34658df2 | 59 | #include "tc.h" |
e4de7287 | 60 | #include "tmpfile-util.h" |
299ad32d | 61 | #include "udev-util.h" |
cf1d700d | 62 | #include "util.h" |
737f1405 | 63 | #include "vrf.h" |
fc2f9534 | 64 | |
3ca1fab7 | 65 | bool link_ipv4ll_enabled(Link *link) { |
b9d74c40 LP |
66 | assert(link); |
67 | ||
78c958f8 TG |
68 | if (link->flags & IFF_LOOPBACK) |
69 | return false; | |
70 | ||
71 | if (!link->network) | |
72 | return false; | |
73 | ||
500b96eb | 74 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
75 | return false; |
76 | ||
a1e35fca YW |
77 | if (link->hw_addr.length != ETH_ALEN) |
78 | return false; | |
79 | ||
80 | if (ether_addr_is_null(&link->hw_addr.ether)) | |
81 | return false; | |
82 | ||
98d20a17 | 83 | if (STRPTR_IN_SET(link->kind, |
84 | "vrf", "wireguard", "ipip", "gre", "ip6gre","ip6tnl", "sit", "vti", | |
b0486c73 | 85 | "vti6", "nlmon", "xfrm", "bareudp")) |
a8f5bba6 JD |
86 | return false; |
87 | ||
f410d463 YW |
88 | /* L3 or L3S mode do not support ARP. */ |
89 | if (IN_SET(link_get_ipvlan_mode(link), NETDEV_IPVLAN_MODE_L3, NETDEV_IPVLAN_MODE_L3S)) | |
90 | return false; | |
91 | ||
f2bfcdb9 YW |
92 | if (link->network->bond) |
93 | return false; | |
94 | ||
3ca1fab7 | 95 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
8bc17bb3 SS |
96 | } |
97 | ||
f8f2f880 | 98 | bool link_ipv6ll_enabled(Link *link) { |
b9d74c40 LP |
99 | assert(link); |
100 | ||
fa709992 LP |
101 | if (!socket_ipv6_is_supported()) |
102 | return false; | |
103 | ||
d0d6a4cd TG |
104 | if (link->flags & IFF_LOOPBACK) |
105 | return false; | |
106 | ||
107 | if (!link->network) | |
108 | return false; | |
109 | ||
500b96eb | 110 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
111 | return false; |
112 | ||
113 | if (STRPTR_IN_SET(link->kind, "vrf", "wireguard", "ipip", "gre", "sit", "vti", "nlmon")) | |
a8f5bba6 JD |
114 | return false; |
115 | ||
f2bfcdb9 YW |
116 | if (link->network->bond) |
117 | return false; | |
118 | ||
e0ee46f2 | 119 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
120 | } |
121 | ||
5e0534f1 | 122 | bool link_ipv6_enabled(Link *link) { |
439689c6 SS |
123 | assert(link); |
124 | ||
125 | if (!socket_ipv6_is_supported()) | |
126 | return false; | |
127 | ||
b102cdca | 128 | if (link->network->bond) |
2b00a4e0 TY |
129 | return false; |
130 | ||
500b96eb | 131 | if (link->iftype == ARPHRD_CAN) |
af9ba57a YW |
132 | return false; |
133 | ||
4cef7fe3 | 134 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
adfeee49 YW |
135 | if (link_ipv6ll_enabled(link)) |
136 | return true; | |
137 | ||
138 | if (network_has_static_ipv6_configurations(link->network)) | |
139 | return true; | |
140 | ||
141 | return false; | |
439689c6 SS |
142 | } |
143 | ||
7191a57a YW |
144 | bool link_is_ready_to_configure(Link *link, bool allow_unmanaged) { |
145 | assert(link); | |
146 | ||
8e4b1b35 | 147 | if (!link->network) { |
7191a57a YW |
148 | if (!allow_unmanaged) |
149 | return false; | |
150 | ||
151 | return link_has_carrier(link); | |
152 | } | |
153 | ||
154 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) | |
155 | return false; | |
156 | ||
baa95d22 YW |
157 | if (!link->network->configure_without_carrier) { |
158 | if (link->set_flags_messages > 0) | |
159 | return false; | |
160 | ||
161 | if (!link_has_carrier(link)) | |
162 | return false; | |
163 | } | |
7191a57a | 164 | |
0fa8ee6c YW |
165 | if (link->set_link_messages > 0) |
166 | return false; | |
167 | ||
71a754f7 YW |
168 | if (!link->stacked_netdevs_created) |
169 | return false; | |
71a754f7 | 170 | |
112a0972 YW |
171 | if (!link->activated) |
172 | return false; | |
112a0972 | 173 | |
7191a57a YW |
174 | return true; |
175 | } | |
176 | ||
15761549 YW |
177 | void link_ntp_settings_clear(Link *link) { |
178 | link->ntp = strv_free(link->ntp); | |
179 | } | |
180 | ||
181 | void link_dns_settings_clear(Link *link) { | |
f5fbe71d | 182 | if (link->n_dns != UINT_MAX) |
e77bd3fd YW |
183 | for (unsigned i = 0; i < link->n_dns; i++) |
184 | in_addr_full_free(link->dns[i]); | |
15761549 | 185 | link->dns = mfree(link->dns); |
f5fbe71d | 186 | link->n_dns = UINT_MAX; |
15761549 | 187 | |
6e4571f0 YW |
188 | link->search_domains = ordered_set_free(link->search_domains); |
189 | link->route_domains = ordered_set_free(link->route_domains); | |
15761549 YW |
190 | |
191 | link->dns_default_route = -1; | |
192 | link->llmnr = _RESOLVE_SUPPORT_INVALID; | |
193 | link->mdns = _RESOLVE_SUPPORT_INVALID; | |
194 | link->dnssec_mode = _DNSSEC_MODE_INVALID; | |
195 | link->dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID; | |
196 | ||
197 | link->dnssec_negative_trust_anchors = set_free_free(link->dnssec_negative_trust_anchors); | |
198 | } | |
199 | ||
1a6bb31f YW |
200 | static void link_free_engines(Link *link) { |
201 | if (!link) | |
202 | return; | |
203 | ||
204 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); | |
205 | link->dhcp_client = sd_dhcp_client_unref(link->dhcp_client); | |
206 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); | |
1c494872 | 207 | link->dhcp_acd = sd_ipv4acd_unref(link->dhcp_acd); |
1a6bb31f YW |
208 | |
209 | link->lldp = sd_lldp_unref(link->lldp); | |
1c494872 | 210 | link_lldp_emit_stop(link); |
1a6bb31f YW |
211 | |
212 | ndisc_flush(link); | |
213 | ||
214 | link->ipv4ll = sd_ipv4ll_unref(link->ipv4ll); | |
215 | link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); | |
1633c457 | 216 | link->dhcp6_lease = sd_dhcp6_lease_unref(link->dhcp6_lease); |
1a6bb31f YW |
217 | link->ndisc = sd_ndisc_unref(link->ndisc); |
218 | link->radv = sd_radv_unref(link->radv); | |
7abe175c YW |
219 | |
220 | ipv4_dad_unref(link); | |
1a6bb31f YW |
221 | } |
222 | ||
8301aa0b | 223 | static Link *link_free(Link *link) { |
8301aa0b | 224 | assert(link); |
f579559b | 225 | |
15761549 YW |
226 | link_ntp_settings_clear(link); |
227 | link_dns_settings_clear(link); | |
228 | ||
8eec0b9d YW |
229 | link->routes = set_free(link->routes); |
230 | link->routes_foreign = set_free(link->routes_foreign); | |
6e537f62 YW |
231 | link->dhcp_routes = set_free(link->dhcp_routes); |
232 | link->dhcp_routes_old = set_free(link->dhcp_routes_old); | |
1633c457 YW |
233 | link->dhcp6_routes = set_free(link->dhcp6_routes); |
234 | link->dhcp6_routes_old = set_free(link->dhcp6_routes_old); | |
235 | link->dhcp6_pd_routes = set_free(link->dhcp6_pd_routes); | |
236 | link->dhcp6_pd_routes_old = set_free(link->dhcp6_pd_routes_old); | |
69203fba | 237 | link->ndisc_routes = set_free(link->ndisc_routes); |
adda1ed9 | 238 | |
8eec0b9d YW |
239 | link->nexthops = set_free(link->nexthops); |
240 | link->nexthops_foreign = set_free(link->nexthops_foreign); | |
c16c7808 | 241 | |
8eec0b9d YW |
242 | link->neighbors = set_free(link->neighbors); |
243 | link->neighbors_foreign = set_free(link->neighbors_foreign); | |
d1bdafd2 | 244 | |
8eec0b9d YW |
245 | link->addresses = set_free(link->addresses); |
246 | link->addresses_foreign = set_free(link->addresses_foreign); | |
aa651e88 | 247 | link->pool_addresses = set_free(link->pool_addresses); |
e5526518 | 248 | link->static_addresses = set_free(link->static_addresses); |
1633c457 YW |
249 | link->dhcp6_addresses = set_free(link->dhcp6_addresses); |
250 | link->dhcp6_addresses_old = set_free(link->dhcp6_addresses_old); | |
251 | link->dhcp6_pd_addresses = set_free(link->dhcp6_pd_addresses); | |
252 | link->dhcp6_pd_addresses_old = set_free(link->dhcp6_pd_addresses_old); | |
69203fba | 253 | link->ndisc_addresses = set_free(link->ndisc_addresses); |
adda1ed9 | 254 | |
4b409e85 YW |
255 | link->dhcp6_pd_prefixes = set_free(link->dhcp6_pd_prefixes); |
256 | ||
1a6bb31f | 257 | link_free_engines(link); |
49699bac | 258 | |
c166a070 | 259 | free(link->ifname); |
572b21d9 | 260 | strv_free(link->alternative_names); |
ceac4078 | 261 | free(link->kind); |
8d968fdd | 262 | free(link->ssid); |
c643bda5 | 263 | free(link->driver); |
6cad256d | 264 | |
a34e58d4 YW |
265 | unlink_and_free(link->lease_file); |
266 | unlink_and_free(link->lldp_file); | |
267 | unlink_and_free(link->state_file); | |
c166a070 | 268 | |
51517f9e | 269 | sd_device_unref(link->sd_device); |
b5db00e5 | 270 | |
0d4ad91d | 271 | hashmap_free(link->bound_to_links); |
0d4ad91d AR |
272 | hashmap_free(link->bound_by_links); |
273 | ||
5f707e12 | 274 | set_free_with_destructor(link->slaves, link_unref); |
033295c1 | 275 | |
c9c908a6 YW |
276 | network_unref(link->network); |
277 | ||
8301aa0b | 278 | return mfree(link); |
14b746f7 TG |
279 | } |
280 | ||
8301aa0b | 281 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 282 | |
6eab614d | 283 | int link_get_by_index(Manager *m, int ifindex, Link **ret) { |
11a7f229 | 284 | Link *link; |
11a7f229 TG |
285 | |
286 | assert(m); | |
e856ed00 | 287 | assert(ifindex > 0); |
11a7f229 | 288 | |
6eab614d | 289 | link = hashmap_get(m->links_by_index, INT_TO_PTR(ifindex)); |
11a7f229 TG |
290 | if (!link) |
291 | return -ENODEV; | |
292 | ||
0b54c870 YW |
293 | if (ret) |
294 | *ret = link; | |
295 | return 0; | |
296 | } | |
297 | ||
298 | int link_get_by_name(Manager *m, const char *ifname, Link **ret) { | |
299 | Link *link; | |
300 | ||
301 | assert(m); | |
302 | assert(ifname); | |
11a7f229 | 303 | |
0b54c870 YW |
304 | link = hashmap_get(m->links_by_name, ifname); |
305 | if (!link) | |
306 | return -ENODEV; | |
307 | ||
308 | if (ret) | |
309 | *ret = link; | |
11a7f229 TG |
310 | return 0; |
311 | } | |
312 | ||
fe321d45 YW |
313 | int link_get_by_hw_addr(Manager *m, const struct hw_addr_data *hw_addr, Link **ret) { |
314 | Link *link; | |
315 | ||
316 | assert(m); | |
317 | assert(hw_addr); | |
318 | ||
319 | link = hashmap_get(m->links_by_hw_addr, hw_addr); | |
320 | if (!link) | |
321 | return -ENODEV; | |
322 | ||
323 | if (ret) | |
324 | *ret = link; | |
325 | return 0; | |
326 | } | |
327 | ||
81357285 YW |
328 | int link_get_master(Link *link, Link **ret) { |
329 | assert(link); | |
330 | assert(link->manager); | |
331 | assert(ret); | |
332 | ||
333 | if (link->master_ifindex <= 0 || link->master_ifindex == link->ifindex) | |
334 | return -ENODEV; | |
335 | ||
6eab614d | 336 | return link_get_by_index(link->manager, link->master_ifindex, ret); |
81357285 YW |
337 | } |
338 | ||
af9ba57a | 339 | void link_set_state(Link *link, LinkState state) { |
e331e246 TG |
340 | assert(link); |
341 | ||
342 | if (link->state == state) | |
343 | return; | |
344 | ||
0beb9542 YW |
345 | log_link_debug(link, "State changed: %s -> %s", |
346 | link_state_to_string(link->state), | |
347 | link_state_to_string(state)); | |
348 | ||
e331e246 TG |
349 | link->state = state; |
350 | ||
351 | link_send_changed(link, "AdministrativeState", NULL); | |
9092113d | 352 | link_dirty(link); |
e331e246 TG |
353 | } |
354 | ||
2a99eed0 | 355 | int link_stop_engines(Link *link, bool may_keep_dhcp) { |
111bb8f9 TG |
356 | int r = 0, k; |
357 | ||
358 | assert(link); | |
359 | assert(link->manager); | |
360 | assert(link->manager->event); | |
361 | ||
80060352 ZJS |
362 | bool keep_dhcp = may_keep_dhcp && |
363 | link->network && | |
364 | (link->manager->restarting || | |
365 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP_ON_STOP)); | |
366 | ||
84add3cd | 367 | if (!keep_dhcp) { |
111bb8f9 | 368 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 369 | if (k < 0) |
36c7d709 | 370 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
371 | } |
372 | ||
84add3cd YW |
373 | k = sd_ipv4acd_stop(link->dhcp_acd); |
374 | if (k < 0) | |
375 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client for DHCPv4: %m"); | |
a7df5cae | 376 | |
2a99eed0 YW |
377 | k = sd_dhcp_server_stop(link->dhcp_server); |
378 | if (k < 0) | |
379 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 server: %m"); | |
380 | ||
9cc65242 YW |
381 | k = sd_lldp_stop(link->lldp); |
382 | if (k < 0) | |
383 | r = log_link_warning_errno(link, k, "Could not stop LLDP: %m"); | |
384 | ||
84add3cd YW |
385 | k = sd_ipv4ll_stop(link->ipv4ll); |
386 | if (k < 0) | |
387 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); | |
dd43110f | 388 | |
490ccbd5 | 389 | k = ipv4_dad_stop(link); |
2488e4d9 YW |
390 | if (k < 0) |
391 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client: %m"); | |
051e77ca | 392 | |
84add3cd YW |
393 | k = sd_dhcp6_client_stop(link->dhcp6_client); |
394 | if (k < 0) | |
395 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); | |
4138fb2c | 396 | |
2ffd6d73 YW |
397 | k = dhcp6_pd_remove(link); |
398 | if (k < 0) | |
399 | r = log_link_warning_errno(link, k, "Could not remove DHCPv6 PD addresses and routes: %m"); | |
1633c457 | 400 | |
84add3cd YW |
401 | k = sd_ndisc_stop(link->ndisc); |
402 | if (k < 0) | |
403 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); | |
4138fb2c | 404 | |
84add3cd YW |
405 | k = sd_radv_stop(link->radv); |
406 | if (k < 0) | |
407 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
7465dd22 | 408 | |
7272b25e | 409 | link_lldp_emit_stop(link); |
111bb8f9 TG |
410 | return r; |
411 | } | |
412 | ||
b22d8a00 | 413 | void link_enter_failed(Link *link) { |
ef1ba606 | 414 | assert(link); |
f882c247 | 415 | |
370e9930 | 416 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
417 | return; |
418 | ||
6a7a4e4d | 419 | log_link_warning(link, "Failed"); |
449f7554 | 420 | |
e331e246 | 421 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 422 | |
2a99eed0 | 423 | (void) link_stop_engines(link, false); |
f882c247 TG |
424 | } |
425 | ||
6accfd31 DA |
426 | void link_check_ready(Link *link) { |
427 | Address *a; | |
6accfd31 DA |
428 | |
429 | assert(link); | |
430 | ||
5f58af25 YW |
431 | if (link->state == LINK_STATE_CONFIGURED) |
432 | return; | |
433 | ||
d19b9939 YW |
434 | if (link->state != LINK_STATE_CONFIGURING) |
435 | return (void) log_link_debug(link, "%s(): link is in %s state.", __func__, link_state_to_string(link->state)); | |
6accfd31 DA |
436 | |
437 | if (!link->network) | |
a7f07cbe | 438 | return (void) log_link_debug(link, "%s(): link is unmanaged.", __func__); |
6accfd31 | 439 | |
7558f9e7 YW |
440 | if (!link->tc_configured) |
441 | return (void) log_link_debug(link, "%s(): traffic controls are not configured.", __func__); | |
600b7898 | 442 | |
a7f07cbe YW |
443 | if (link->set_link_messages > 0) |
444 | return (void) log_link_debug(link, "%s(): link layer is configuring.", __func__); | |
445 | ||
446 | if (!link->activated) | |
447 | return (void) log_link_debug(link, "%s(): link is not activated.", __func__); | |
448 | ||
7558f9e7 YW |
449 | if (link->iftype == ARPHRD_CAN) { |
450 | /* let's shortcut things for CAN which doesn't need most of checks below. */ | |
451 | link_set_state(link, LINK_STATE_CONFIGURED); | |
452 | return; | |
453 | } | |
454 | ||
76c5a0f2 | 455 | if (!link->static_addresses_configured) |
d19b9939 | 456 | return (void) log_link_debug(link, "%s(): static addresses are not configured.", __func__); |
6accfd31 | 457 | |
90e74a66 | 458 | SET_FOREACH(a, link->addresses) |
39373cb9 YW |
459 | if (!address_is_ready(a)) { |
460 | _cleanup_free_ char *str = NULL; | |
461 | ||
5380707a YW |
462 | (void) in_addr_prefix_to_string(a->family, &a->in_addr, a->prefixlen, &str); |
463 | return (void) log_link_debug(link, "%s(): an address %s is not ready.", __func__, strna(str)); | |
39373cb9 | 464 | } |
6aa5773b | 465 | |
354bc760 YW |
466 | if (!link->static_address_labels_configured) |
467 | return (void) log_link_debug(link, "%s(): static address labels are not configured.", __func__); | |
468 | ||
e5b35bf6 YW |
469 | if (!link->static_bridge_fdb_configured) |
470 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
471 | ||
ff9e0783 YW |
472 | if (!link->static_bridge_mdb_configured) |
473 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
474 | ||
fdeba3f5 YW |
475 | if (!link->static_ipv6_proxy_ndp_configured) |
476 | return (void) log_link_debug(link, "%s(): static IPv6 proxy NDP addresses are not configured.", __func__); | |
477 | ||
40ca350e YW |
478 | if (!link->static_neighbors_configured) |
479 | return (void) log_link_debug(link, "%s(): static neighbors are not configured.", __func__); | |
480 | ||
d19b9939 YW |
481 | if (!link->static_nexthops_configured) |
482 | return (void) log_link_debug(link, "%s(): static nexthops are not configured.", __func__); | |
c16c7808 | 483 | |
76c5a0f2 YW |
484 | if (!link->static_routes_configured) |
485 | return (void) log_link_debug(link, "%s(): static routes are not configured.", __func__); | |
486 | ||
0e5ef6be | 487 | if (!link->static_routing_policy_rules_configured) |
d19b9939 | 488 | return (void) log_link_debug(link, "%s(): static routing policy rules are not configured.", __func__); |
6accfd31 | 489 | |
d19b9939 YW |
490 | if (!link->sr_iov_configured) |
491 | return (void) log_link_debug(link, "%s(): SR-IOV is not configured.", __func__); | |
518cd6b5 | 492 | |
4bcb8625 YW |
493 | /* IPv6LL is assigned after the link gains its carrier. */ |
494 | if (!link->network->configure_without_carrier && | |
495 | link_ipv6ll_enabled(link) && | |
496 | !in6_addr_is_set(&link->ipv6ll_address)) | |
497 | return (void) log_link_debug(link, "%s(): IPv6LL is not configured yet.", __func__); | |
498 | ||
499 | bool has_ndisc_address = false; | |
500 | NDiscAddress *n; | |
501 | SET_FOREACH(n, link->ndisc_addresses) | |
502 | if (!n->marked) { | |
503 | has_ndisc_address = true; | |
504 | break; | |
505 | } | |
50550722 | 506 | |
4bcb8625 YW |
507 | if ((link_dhcp4_enabled(link) || link_dhcp6_with_address_enabled(link) || link_ipv4ll_enabled(link)) && |
508 | !link->dhcp_address && set_isempty(link->dhcp6_addresses) && !has_ndisc_address && | |
509 | !link->ipv4ll_address_configured) | |
510 | /* When DHCP[46] or IPv4LL is enabled, at least one address is acquired by them. */ | |
511 | return (void) log_link_debug(link, "%s(): DHCP4, DHCP6 or IPv4LL is enabled but no dynamic address is assigned yet.", __func__); | |
512 | ||
513 | /* Ignore NDisc when ConfigureWithoutCarrier= is enabled, as IPv6AcceptRA= is enabled by default. */ | |
514 | if (link_dhcp4_enabled(link) || link_dhcp6_enabled(link) || link_dhcp6_pd_is_enabled(link) || | |
515 | (!link->network->configure_without_carrier && link_ipv6_accept_ra_enabled(link)) || | |
516 | link_ipv4ll_enabled(link)) { | |
517 | ||
518 | if (!link->dhcp4_configured && | |
519 | !(link->dhcp6_address_configured && link->dhcp6_route_configured) && | |
520 | !(link->dhcp6_pd_address_configured && link->dhcp6_pd_route_configured) && | |
521 | !(link->ndisc_addresses_configured && link->ndisc_routes_configured) && | |
0d0799da | 522 | !link->ipv4ll_address_configured) |
4bcb8625 YW |
523 | /* When DHCP[46], NDisc, or IPv4LL is enabled, at least one protocol must be finished. */ |
524 | return (void) log_link_debug(link, "%s(): dynamic addresses or routes are not configured.", __func__); | |
525 | ||
526 | log_link_debug(link, "%s(): dhcp4:%s ipv4ll:%s dhcp6_addresses:%s dhcp_routes:%s dhcp_pd_addresses:%s dhcp_pd_routes:%s ndisc_addresses:%s ndisc_routes:%s", | |
527 | __func__, | |
528 | yes_no(link->dhcp4_configured), | |
529 | yes_no(link->ipv4ll_address_configured), | |
530 | yes_no(link->dhcp6_address_configured), | |
531 | yes_no(link->dhcp6_route_configured), | |
532 | yes_no(link->dhcp6_pd_address_configured), | |
533 | yes_no(link->dhcp6_pd_route_configured), | |
534 | yes_no(link->ndisc_addresses_configured), | |
535 | yes_no(link->ndisc_routes_configured)); | |
463797c1 | 536 | } |
6accfd31 | 537 | |
29836c16 | 538 | link_set_state(link, LINK_STATE_CONFIGURED); |
6accfd31 DA |
539 | } |
540 | ||
97108953 | 541 | static int link_request_static_configs(Link *link) { |
f882c247 TG |
542 | int r; |
543 | ||
544 | assert(link); | |
545 | assert(link->network); | |
f5be5601 | 546 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 547 | |
354bc760 | 548 | r = link_request_static_addresses(link); |
0e5ef6be YW |
549 | if (r < 0) |
550 | return r; | |
551 | ||
354bc760 | 552 | r = link_request_static_address_labels(link); |
f3ef324d YW |
553 | if (r < 0) |
554 | return r; | |
e4a71bf3 | 555 | |
e5b35bf6 YW |
556 | r = link_request_static_bridge_fdb(link); |
557 | if (r < 0) | |
558 | return r; | |
559 | ||
9a038aac YW |
560 | r = link_request_static_bridge_mdb(link); |
561 | if (r < 0) | |
562 | return r; | |
563 | ||
fdeba3f5 YW |
564 | r = link_request_static_ipv6_proxy_ndp_addresses(link); |
565 | if (r < 0) | |
566 | return r; | |
567 | ||
40ca350e | 568 | r = link_request_static_neighbors(link); |
682c65b0 YW |
569 | if (r < 0) |
570 | return r; | |
bd6379ec | 571 | |
76c5a0f2 | 572 | r = link_request_static_nexthops(link, false); |
fe2bc17c YW |
573 | if (r < 0) |
574 | return r; | |
f882c247 | 575 | |
76c5a0f2 YW |
576 | r = link_request_static_routes(link, false); |
577 | if (r < 0) | |
578 | return r; | |
579 | ||
580 | r = link_request_static_routing_policy_rules(link); | |
5ae0fb7f YW |
581 | if (r < 0) |
582 | return r; | |
d4cdbea5 | 583 | |
f882c247 TG |
584 | return 0; |
585 | } | |
586 | ||
1187fc33 YW |
587 | static int link_request_stacked_netdevs(Link *link) { |
588 | NetDev *netdev; | |
e16e4b3b DS |
589 | int r; |
590 | ||
591 | assert(link); | |
592 | ||
1187fc33 YW |
593 | link->stacked_netdevs_created = false; |
594 | link->stacked_netdevs_after_configured_created = false; | |
e16e4b3b | 595 | |
1187fc33 YW |
596 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
597 | r = link_request_to_crate_stacked_netdev(link, netdev); | |
598 | if (r < 0) | |
599 | return r; | |
600 | } | |
e16e4b3b | 601 | |
1187fc33 YW |
602 | if (link->create_stacked_netdev_messages == 0) |
603 | link->stacked_netdevs_created = true; | |
604 | if (link->create_stacked_netdev_after_configured_messages == 0) | |
605 | link->stacked_netdevs_after_configured_created = true; | |
e16e4b3b DS |
606 | |
607 | return 0; | |
608 | } | |
609 | ||
8566df79 | 610 | static int link_acquire_dynamic_ipv6_conf(Link *link) { |
e7ab854c TG |
611 | int r; |
612 | ||
613 | assert(link); | |
614 | ||
086b8853 | 615 | if (link->radv) { |
7465dd22 | 616 | assert(link->radv); |
94876904 | 617 | assert(in6_addr_is_link_local(&link->ipv6ll_address)); |
7465dd22 PF |
618 | |
619 | log_link_debug(link, "Starting IPv6 Router Advertisements"); | |
620 | ||
fd3ef936 YW |
621 | r = radv_emit_dns(link); |
622 | if (r < 0) | |
623 | return log_link_warning_errno(link, r, "Failed to configure DNS or Domains in IPv6 Router Advertisement: %m"); | |
624 | ||
7465dd22 PF |
625 | r = sd_radv_start(link->radv); |
626 | if (r < 0 && r != -EBUSY) | |
627 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Advertisement: %m"); | |
628 | } | |
629 | ||
294f129b YW |
630 | r = ndisc_start(link); |
631 | if (r < 0) | |
632 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Discovery: %m"); | |
cd305af1 | 633 | |
294f129b YW |
634 | r = dhcp6_start(link); |
635 | if (r < 0) | |
636 | return log_link_warning_errno(link, r, "Failed to start DHCPv6 client: %m"); | |
cd305af1 | 637 | |
1633c457 YW |
638 | r = dhcp6_request_prefix_delegation(link); |
639 | if (r < 0) | |
640 | return log_link_warning_errno(link, r, "Failed to request DHCPv6 prefix delegation: %m"); | |
10752343 | 641 | |
e7ab854c TG |
642 | return 0; |
643 | } | |
644 | ||
8566df79 | 645 | static int link_acquire_dynamic_ipv4_conf(Link *link) { |
ff254138 TG |
646 | int r; |
647 | ||
648 | assert(link); | |
ff254138 TG |
649 | assert(link->manager); |
650 | assert(link->manager->event); | |
651 | ||
0107b769 | 652 | if (link->dhcp_client) { |
294f129b | 653 | r = dhcp4_start(link); |
0107b769 | 654 | if (r < 0) |
294f129b | 655 | return log_link_warning_errno(link, r, "Failed to start DHCPv4 client: %m"); |
0107b769 | 656 | |
0b4b66cc | 657 | } else if (link->ipv4ll) { |
6a7a4e4d | 658 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
659 | |
660 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
661 | if (r < 0) |
662 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
663 | } |
664 | ||
ab486ef4 YW |
665 | if (link->dhcp_server) { |
666 | r = sd_dhcp_server_start(link->dhcp_server); | |
667 | if (r < 0) | |
668 | return log_link_warning_errno(link, r, "Could not start DHCP server: %m"); | |
669 | } | |
670 | ||
6fc25497 SS |
671 | return 0; |
672 | } | |
673 | ||
8566df79 | 674 | static int link_acquire_dynamic_conf(Link *link) { |
6fc25497 SS |
675 | int r; |
676 | ||
677 | assert(link); | |
678 | ||
8566df79 | 679 | r = link_acquire_dynamic_ipv4_conf(link); |
6fc25497 SS |
680 | if (r < 0) |
681 | return r; | |
682 | ||
94876904 | 683 | if (in6_addr_is_set(&link->ipv6ll_address)) { |
8566df79 | 684 | r = link_acquire_dynamic_ipv6_conf(link); |
6fc25497 SS |
685 | if (r < 0) |
686 | return r; | |
687 | } | |
688 | ||
2ffd6d73 YW |
689 | r = link_lldp_emit_start(link); |
690 | if (r < 0) | |
691 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
8e1ad1ea | 692 | |
ff254138 TG |
693 | return 0; |
694 | } | |
695 | ||
0c9ee5d5 YW |
696 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
697 | int r; | |
deb2e523 | 698 | |
0c9ee5d5 | 699 | assert(link); |
deb2e523 | 700 | |
0c9ee5d5 | 701 | log_link_info(link, "Gained IPv6LL"); |
deb2e523 | 702 | |
0c9ee5d5 YW |
703 | link->ipv6ll_address = *address; |
704 | link_check_ready(link); | |
705 | ||
706 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { | |
707 | r = link_acquire_dynamic_ipv6_conf(link); | |
708 | if (r < 0) { | |
709 | link_enter_failed(link); | |
710 | return r; | |
711 | } | |
712 | } | |
713 | ||
714 | return 0; | |
deb2e523 TG |
715 | } |
716 | ||
112a0972 | 717 | int link_handle_bound_to_list(Link *link) { |
0d4ad91d AR |
718 | bool required_up = false; |
719 | bool link_is_up = false; | |
852a3916 | 720 | Link *l; |
0d4ad91d AR |
721 | |
722 | assert(link); | |
723 | ||
ad82f0c3 YW |
724 | /* If at least one interface in bound_to_links has carrier, then make this interface up. |
725 | * If all interfaces in bound_to_links do not, then make this interface down. */ | |
726 | ||
0d4ad91d AR |
727 | if (hashmap_isempty(link->bound_to_links)) |
728 | return 0; | |
729 | ||
730 | if (link->flags & IFF_UP) | |
731 | link_is_up = true; | |
732 | ||
852a3916 | 733 | HASHMAP_FOREACH(l, link->bound_to_links) |
0d4ad91d AR |
734 | if (link_has_carrier(l)) { |
735 | required_up = true; | |
736 | break; | |
737 | } | |
738 | ||
852a3916 | 739 | if (!required_up && link_is_up) |
68f52063 | 740 | return link_request_to_bring_up_or_down(link, /* up = */ false); |
852a3916 | 741 | if (required_up && !link_is_up) |
68f52063 | 742 | return link_request_to_bring_up_or_down(link, /* up = */ true); |
0d4ad91d AR |
743 | |
744 | return 0; | |
745 | } | |
746 | ||
747 | static int link_handle_bound_by_list(Link *link) { | |
0d4ad91d AR |
748 | Link *l; |
749 | int r; | |
750 | ||
751 | assert(link); | |
752 | ||
ad82f0c3 YW |
753 | /* Update up or down state of interfaces which depend on this interface's carrier state. */ |
754 | ||
0d4ad91d AR |
755 | if (hashmap_isempty(link->bound_by_links)) |
756 | return 0; | |
757 | ||
852a3916 | 758 | HASHMAP_FOREACH(l, link->bound_by_links) { |
0d4ad91d AR |
759 | r = link_handle_bound_to_list(l); |
760 | if (r < 0) | |
761 | return r; | |
762 | } | |
763 | ||
764 | return 0; | |
765 | } | |
766 | ||
767 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
768 | int r; | |
769 | ||
770 | assert(link); | |
771 | assert(carrier); | |
772 | ||
773 | if (link == carrier) | |
774 | return 0; | |
775 | ||
776 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
777 | return 0; | |
778 | ||
190b3b5c | 779 | r = hashmap_ensure_put(h, NULL, INT_TO_PTR(carrier->ifindex), carrier); |
0d4ad91d AR |
780 | if (r < 0) |
781 | return r; | |
782 | ||
9092113d YW |
783 | link_dirty(link); |
784 | ||
0d4ad91d AR |
785 | return 0; |
786 | } | |
787 | ||
788 | static int link_new_bound_by_list(Link *link) { | |
789 | Manager *m; | |
790 | Link *carrier; | |
0d4ad91d | 791 | int r; |
0d4ad91d AR |
792 | |
793 | assert(link); | |
794 | assert(link->manager); | |
795 | ||
796 | m = link->manager; | |
797 | ||
6eab614d | 798 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
0d4ad91d AR |
799 | if (!carrier->network) |
800 | continue; | |
801 | ||
802 | if (strv_isempty(carrier->network->bind_carrier)) | |
803 | continue; | |
804 | ||
191a3f16 | 805 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname)) { |
0d4ad91d AR |
806 | r = link_put_carrier(link, carrier, &link->bound_by_links); |
807 | if (r < 0) | |
808 | return r; | |
0d4ad91d AR |
809 | } |
810 | } | |
811 | ||
90e74a66 | 812 | HASHMAP_FOREACH(carrier, link->bound_by_links) { |
0d4ad91d AR |
813 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
814 | if (r < 0) | |
815 | return r; | |
0d4ad91d AR |
816 | } |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
821 | static int link_new_bound_to_list(Link *link) { | |
822 | Manager *m; | |
823 | Link *carrier; | |
0d4ad91d | 824 | int r; |
0d4ad91d AR |
825 | |
826 | assert(link); | |
827 | assert(link->manager); | |
828 | ||
829 | if (!link->network) | |
830 | return 0; | |
831 | ||
832 | if (strv_isempty(link->network->bind_carrier)) | |
833 | return 0; | |
834 | ||
835 | m = link->manager; | |
836 | ||
6eab614d | 837 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
191a3f16 | 838 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname)) { |
0d4ad91d AR |
839 | r = link_put_carrier(link, carrier, &link->bound_to_links); |
840 | if (r < 0) | |
841 | return r; | |
0d4ad91d AR |
842 | } |
843 | } | |
844 | ||
852a3916 | 845 | HASHMAP_FOREACH(carrier, link->bound_to_links) { |
0d4ad91d AR |
846 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); |
847 | if (r < 0) | |
848 | return r; | |
0d4ad91d AR |
849 | } |
850 | ||
851 | return 0; | |
852 | } | |
853 | ||
854 | static int link_new_carrier_maps(Link *link) { | |
855 | int r; | |
856 | ||
857 | r = link_new_bound_by_list(link); | |
858 | if (r < 0) | |
859 | return r; | |
860 | ||
861 | r = link_handle_bound_by_list(link); | |
862 | if (r < 0) | |
863 | return r; | |
864 | ||
865 | r = link_new_bound_to_list(link); | |
866 | if (r < 0) | |
867 | return r; | |
868 | ||
852a3916 | 869 | return link_handle_bound_to_list(link); |
0d4ad91d AR |
870 | } |
871 | ||
872 | static void link_free_bound_to_list(Link *link) { | |
9092113d | 873 | bool updated = false; |
0d4ad91d | 874 | Link *bound_to; |
0d4ad91d | 875 | |
9092113d YW |
876 | assert(link); |
877 | ||
878 | while ((bound_to = hashmap_steal_first(link->bound_to_links))) { | |
879 | updated = true; | |
0d4ad91d AR |
880 | |
881 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 882 | link_dirty(bound_to); |
0d4ad91d AR |
883 | } |
884 | ||
9092113d YW |
885 | if (updated) |
886 | link_dirty(link); | |
0d4ad91d AR |
887 | } |
888 | ||
889 | static void link_free_bound_by_list(Link *link) { | |
9092113d | 890 | bool updated = false; |
0d4ad91d | 891 | Link *bound_by; |
0d4ad91d | 892 | |
9092113d YW |
893 | assert(link); |
894 | ||
895 | while ((bound_by = hashmap_steal_first(link->bound_by_links))) { | |
896 | updated = true; | |
0d4ad91d AR |
897 | |
898 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 899 | link_dirty(bound_by); |
0d4ad91d AR |
900 | link_handle_bound_to_list(bound_by); |
901 | } | |
902 | } | |
903 | ||
9092113d YW |
904 | if (updated) |
905 | link_dirty(link); | |
0d4ad91d AR |
906 | } |
907 | ||
908 | static void link_free_carrier_maps(Link *link) { | |
0d4ad91d AR |
909 | assert(link); |
910 | ||
9092113d YW |
911 | link_free_bound_to_list(link); |
912 | link_free_bound_by_list(link); | |
0d4ad91d AR |
913 | } |
914 | ||
81357285 | 915 | static int link_append_to_master(Link *link) { |
5f707e12 YW |
916 | Link *master; |
917 | int r; | |
918 | ||
919 | assert(link); | |
5f707e12 | 920 | |
81357285 YW |
921 | /* - The link may have no master. |
922 | * - RTM_NEWLINK message about master interface may not be received yet. */ | |
923 | if (link_get_master(link, &master) < 0) | |
924 | return 0; | |
5f707e12 | 925 | |
de7fef4b | 926 | r = set_ensure_put(&master->slaves, NULL, link); |
38288f0b | 927 | if (r <= 0) |
5f707e12 YW |
928 | return r; |
929 | ||
930 | link_ref(link); | |
931 | return 0; | |
932 | } | |
933 | ||
81357285 | 934 | static void link_drop_from_master(Link *link) { |
5f707e12 YW |
935 | Link *master; |
936 | ||
937 | assert(link); | |
938 | ||
81357285 | 939 | if (!link->manager) |
5f707e12 YW |
940 | return; |
941 | ||
81357285 | 942 | if (link_get_master(link, &master) < 0) |
5f707e12 YW |
943 | return; |
944 | ||
945 | link_unref(set_remove(master->slaves, link)); | |
946 | } | |
947 | ||
56001f02 YW |
948 | static void link_drop_requests(Link *link) { |
949 | Request *req; | |
950 | ||
951 | assert(link); | |
952 | assert(link->manager); | |
953 | ||
954 | ORDERED_SET_FOREACH(req, link->manager->request_queue) | |
955 | if (req->link == link) | |
956 | request_drop(req); | |
957 | } | |
958 | ||
cc2d7efc | 959 | static Link *link_drop(Link *link) { |
0b54c870 YW |
960 | char **n; |
961 | ||
63130eb3 | 962 | if (!link) |
cc2d7efc | 963 | return NULL; |
0d4ad91d | 964 | |
63130eb3 YW |
965 | assert(link->manager); |
966 | ||
0d4ad91d AR |
967 | link_set_state(link, LINK_STATE_LINGER); |
968 | ||
63130eb3 YW |
969 | /* Drop all references from other links and manager. Note that async netlink calls may have |
970 | * references to the link, and they will be dropped when we receive replies. */ | |
971 | ||
56001f02 YW |
972 | link_drop_requests(link); |
973 | ||
0d4ad91d AR |
974 | link_free_carrier_maps(link); |
975 | ||
81357285 | 976 | link_drop_from_master(link); |
5f707e12 | 977 | |
63130eb3 | 978 | link_unref(set_remove(link->manager->links_requesting_uuid, link)); |
0d4ad91d | 979 | |
db2f8a2e | 980 | (void) unlink(link->state_file); |
63130eb3 YW |
981 | link_clean(link); |
982 | ||
0b54c870 YW |
983 | STRV_FOREACH(n, link->alternative_names) |
984 | hashmap_remove(link->manager->links_by_name, *n); | |
0b54c870 YW |
985 | hashmap_remove(link->manager->links_by_name, link->ifname); |
986 | ||
fe321d45 YW |
987 | /* bonding master and its slaves have the same hardware address. */ |
988 | if (hashmap_get(link->manager->links_by_hw_addr, &link->hw_addr) == link) | |
989 | hashmap_remove(link->manager->links_by_hw_addr, &link->hw_addr); | |
990 | ||
63130eb3 | 991 | /* The following must be called at last. */ |
6eab614d | 992 | assert_se(hashmap_remove(link->manager->links_by_index, INT_TO_PTR(link->ifindex)) == link); |
cc2d7efc | 993 | return link_unref(link); |
0d4ad91d AR |
994 | } |
995 | ||
5e5b137a | 996 | static int link_drop_foreign_config(Link *link) { |
0b81225e YW |
997 | int k, r; |
998 | ||
999 | assert(link); | |
1000 | assert(link->manager); | |
5e5b137a | 1001 | |
e36d601c | 1002 | r = link_drop_foreign_routes(link); |
5e5b137a | 1003 | |
e36d601c | 1004 | k = link_drop_foreign_nexthops(link); |
0b81225e YW |
1005 | if (k < 0 && r >= 0) |
1006 | r = k; | |
1007 | ||
e36d601c | 1008 | k = link_drop_foreign_addresses(link); |
0b81225e YW |
1009 | if (k < 0 && r >= 0) |
1010 | r = k; | |
d1bdafd2 | 1011 | |
e36d601c | 1012 | k = link_drop_foreign_neighbors(link); |
25b82b6e YW |
1013 | if (k < 0 && r >= 0) |
1014 | r = k; | |
1015 | ||
0b81225e YW |
1016 | k = manager_drop_foreign_routing_policy_rules(link->manager); |
1017 | if (k < 0 && r >= 0) | |
1018 | r = k; | |
1019 | ||
1020 | return r; | |
5e5b137a TG |
1021 | } |
1022 | ||
3104883d | 1023 | static int link_drop_config(Link *link) { |
0b81225e YW |
1024 | int k, r; |
1025 | ||
1026 | assert(link); | |
1027 | assert(link->manager); | |
3104883d | 1028 | |
e36d601c | 1029 | r = link_drop_routes(link); |
3104883d | 1030 | |
e36d601c | 1031 | k = link_drop_nexthops(link); |
0b81225e YW |
1032 | if (k < 0 && r >= 0) |
1033 | r = k; | |
d1bdafd2 | 1034 | |
e36d601c | 1035 | k = link_drop_addresses(link); |
0b81225e YW |
1036 | if (k < 0 && r >= 0) |
1037 | r = k; | |
1038 | ||
e36d601c | 1039 | k = link_drop_neighbors(link); |
25b82b6e YW |
1040 | if (k < 0 && r >= 0) |
1041 | r = k; | |
1042 | ||
0b81225e YW |
1043 | k = manager_drop_routing_policy_rules(link->manager, link); |
1044 | if (k < 0 && r >= 0) | |
1045 | r = k; | |
3104883d | 1046 | |
c69305ff LP |
1047 | ndisc_flush(link); |
1048 | ||
0b81225e | 1049 | return r; |
3104883d SS |
1050 | } |
1051 | ||
c3b94251 | 1052 | static int link_configure(Link *link) { |
4ecdcb07 YW |
1053 | int r; |
1054 | ||
ef1ba606 | 1055 | assert(link); |
b22d8a00 | 1056 | assert(link->network); |
bd08ce56 | 1057 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 1058 | |
1187fc33 YW |
1059 | link_set_state(link, LINK_STATE_CONFIGURING); |
1060 | ||
34658df2 | 1061 | r = link_configure_traffic_control(link); |
4ecdcb07 YW |
1062 | if (r < 0) |
1063 | return r; | |
1064 | ||
7558f9e7 YW |
1065 | if (link->iftype == ARPHRD_CAN) { |
1066 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
1067 | r = link_request_to_set_can(link); | |
1068 | if (r < 0) | |
1069 | return r; | |
1070 | ||
1071 | return link_request_to_activate(link); | |
1072 | } | |
1073 | ||
518cd6b5 SS |
1074 | r = link_configure_sr_iov(link); |
1075 | if (r < 0) | |
1076 | return r; | |
1077 | ||
5e0534f1 | 1078 | r = link_set_sysctl(link); |
b69c3180 SS |
1079 | if (r < 0) |
1080 | return r; | |
8749cbcd | 1081 | |
d05c332c | 1082 | r = link_request_to_set_mac(link, /* allow_retry = */ true); |
e16e4b3b DS |
1083 | if (r < 0) |
1084 | return r; | |
1085 | ||
1187fc33 | 1086 | r = link_request_to_set_flags(link); |
e16e4b3b DS |
1087 | if (r < 0) |
1088 | return r; | |
1089 | ||
1187fc33 | 1090 | r = link_request_to_set_group(link); |
99d2baa2 SS |
1091 | if (r < 0) |
1092 | return r; | |
1093 | ||
1187fc33 YW |
1094 | r = link_configure_mtu(link); |
1095 | if (r < 0) | |
1096 | return r; | |
1097 | ||
1098 | r = link_request_to_set_addrgen_mode(link); | |
1099 | if (r < 0) | |
1100 | return r; | |
1101 | ||
1102 | r = link_request_to_set_master(link); | |
1103 | if (r < 0) | |
1104 | return r; | |
1105 | ||
1106 | r = link_request_stacked_netdevs(link); | |
1107 | if (r < 0) | |
1108 | return r; | |
1109 | ||
1110 | r = link_request_to_set_bond(link); | |
1111 | if (r < 0) | |
1112 | return r; | |
1113 | ||
1114 | r = link_request_to_set_bridge(link); | |
1115 | if (r < 0) | |
1116 | return r; | |
1117 | ||
1118 | r = link_request_to_set_bridge_vlan(link); | |
1119 | if (r < 0) | |
1120 | return r; | |
1121 | ||
1122 | r = link_request_to_activate(link); | |
89fe6535 SS |
1123 | if (r < 0) |
1124 | return r; | |
1125 | ||
2ffd6d73 YW |
1126 | r = ipv4ll_configure(link); |
1127 | if (r < 0) | |
1128 | return r; | |
64b21ece | 1129 | |
2ffd6d73 YW |
1130 | r = dhcp4_configure(link); |
1131 | if (r < 0) | |
1132 | return r; | |
eb34d4af | 1133 | |
2ffd6d73 YW |
1134 | r = dhcp6_configure(link); |
1135 | if (r < 0) | |
1136 | return r; | |
f5a8c43f | 1137 | |
2ffd6d73 YW |
1138 | r = ndisc_configure(link); |
1139 | if (r < 0) | |
1140 | return r; | |
4138fb2c | 1141 | |
1d28a3cf YW |
1142 | r = link_request_dhcp_server(link); |
1143 | if (r < 0) | |
1144 | return r; | |
1145 | ||
086b8853 YW |
1146 | r = radv_configure(link); |
1147 | if (r < 0) | |
1148 | return r; | |
7465dd22 | 1149 | |
2ffd6d73 YW |
1150 | r = link_lldp_rx_configure(link); |
1151 | if (r < 0) | |
1152 | return r; | |
ce43e484 | 1153 | |
4c649652 DS |
1154 | /* Drop foreign config, but ignore loopback or critical devices. |
1155 | * We do not want to remove loopback address or addresses used for root NFS. */ | |
1156 | if (!(link->flags & IFF_LOOPBACK) && | |
1157 | link->network->keep_configuration != KEEP_CONFIGURATION_YES) { | |
1158 | r = link_drop_foreign_config(link); | |
1159 | if (r < 0) | |
1160 | return r; | |
1161 | } | |
1162 | ||
1187fc33 YW |
1163 | r = link_request_static_configs(link); |
1164 | if (r < 0) | |
1165 | return r; | |
1166 | ||
1167 | if (!link_has_carrier(link)) | |
1168 | return 0; | |
1169 | ||
1170 | return link_acquire_dynamic_conf(link); | |
505f8da7 TG |
1171 | } |
1172 | ||
170e88c8 YW |
1173 | static int link_get_network(Link *link, Network **ret) { |
1174 | Network *network; | |
1a3caa49 | 1175 | int r; |
170e88c8 YW |
1176 | |
1177 | assert(link); | |
1178 | assert(link->manager); | |
1179 | assert(ret); | |
1180 | ||
1181 | ORDERED_HASHMAP_FOREACH(network, link->manager->networks) { | |
1182 | bool warn = false; | |
1183 | ||
1a3caa49 | 1184 | r = net_match_config( |
170e88c8 YW |
1185 | &network->match, |
1186 | link->sd_device, | |
ca2b7cd8 | 1187 | &link->hw_addr.ether, |
170e88c8 YW |
1188 | &link->permanent_mac, |
1189 | link->driver, | |
1190 | link->iftype, | |
1191 | link->ifname, | |
1192 | link->alternative_names, | |
1193 | link->wlan_iftype, | |
1194 | link->ssid, | |
1a3caa49 YW |
1195 | &link->bssid); |
1196 | if (r < 0) | |
1197 | return r; | |
1198 | if (r == 0) | |
170e88c8 YW |
1199 | continue; |
1200 | ||
1201 | if (network->match.ifname && link->sd_device) { | |
1202 | uint8_t name_assign_type = NET_NAME_UNKNOWN; | |
1203 | const char *attr; | |
1204 | ||
1205 | if (sd_device_get_sysattr_value(link->sd_device, "name_assign_type", &attr) >= 0) | |
1206 | (void) safe_atou8(attr, &name_assign_type); | |
1207 | ||
1208 | warn = name_assign_type == NET_NAME_ENUM; | |
1209 | } | |
1210 | ||
1211 | log_link_full(link, warn ? LOG_WARNING : LOG_DEBUG, | |
1212 | "found matching network '%s'%s.", | |
1213 | network->filename, | |
1214 | warn ? ", based on potentially unpredictable interface name" : ""); | |
1215 | ||
1216 | if (network->unmanaged) | |
1217 | return -ENOENT; | |
1218 | ||
1219 | *ret = network; | |
1220 | return 0; | |
1221 | } | |
1222 | ||
1223 | return -ENOENT; | |
1224 | } | |
1225 | ||
7f80fa12 | 1226 | static int link_reconfigure_impl(Link *link, bool force) { |
ad932b15 YW |
1227 | Network *network; |
1228 | int r; | |
1229 | ||
5a1860f7 | 1230 | assert(link); |
572b21d9 | 1231 | |
170e88c8 | 1232 | r = link_get_network(link, &network); |
ad932b15 | 1233 | if (r == -ENOENT) { |
29836c16 | 1234 | link_set_state(link, LINK_STATE_UNMANAGED); |
ad932b15 | 1235 | return 0; |
170e88c8 YW |
1236 | } |
1237 | if (r < 0) | |
ad932b15 YW |
1238 | return r; |
1239 | ||
99b8517c | 1240 | if (link->network == network && !force) |
ad932b15 YW |
1241 | return 0; |
1242 | ||
1243 | log_link_info(link, "Re-configuring with %s", network->filename); | |
1244 | ||
1245 | /* Dropping old .network file */ | |
2a99eed0 | 1246 | r = link_stop_engines(link, false); |
572b21d9 | 1247 | if (r < 0) |
ad932b15 | 1248 | return r; |
ad932b15 | 1249 | |
19d9a5ad YW |
1250 | link_drop_requests(link); |
1251 | ||
ad932b15 YW |
1252 | r = link_drop_config(link); |
1253 | if (r < 0) | |
1254 | return r; | |
1255 | ||
2c7b826d | 1256 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
942cf4b8 | 1257 | log_link_debug(link, "State is %s, dropping foreign config", link_state_to_string(link->state)); |
ad932b15 YW |
1258 | r = link_drop_foreign_config(link); |
1259 | if (r < 0) | |
1260 | return r; | |
1261 | } | |
1262 | ||
1263 | link_free_carrier_maps(link); | |
1264 | link_free_engines(link); | |
1265 | link->network = network_unref(link->network); | |
59c31eba | 1266 | link_unref(set_remove(link->manager->links_requesting_uuid, link)); |
ad932b15 YW |
1267 | |
1268 | /* Then, apply new .network file */ | |
9092113d | 1269 | link->network = network_ref(network); |
b156a95d | 1270 | link_update_operstate(link, true); |
9092113d | 1271 | link_dirty(link); |
ad932b15 YW |
1272 | |
1273 | r = link_new_carrier_maps(link); | |
1274 | if (r < 0) | |
1275 | return r; | |
1276 | ||
1277 | link_set_state(link, LINK_STATE_INITIALIZED); | |
61135582 | 1278 | link->activated = false; |
ad932b15 | 1279 | |
ad932b15 YW |
1280 | r = link_configure(link); |
1281 | if (r < 0) | |
1282 | return r; | |
1283 | ||
0e397560 | 1284 | return 1; |
ad932b15 YW |
1285 | } |
1286 | ||
5a1860f7 | 1287 | static int link_reconfigure_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, bool force) { |
572b21d9 YW |
1288 | int r; |
1289 | ||
5a1860f7 YW |
1290 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to update link state"); |
1291 | if (r <= 0) | |
1292 | return r; | |
1293 | ||
7f80fa12 | 1294 | r = link_reconfigure_impl(link, force); |
572b21d9 YW |
1295 | if (r < 0) |
1296 | link_enter_failed(link); | |
1297 | ||
5a1860f7 | 1298 | return 0; |
572b21d9 YW |
1299 | } |
1300 | ||
5a1860f7 YW |
1301 | static int link_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1302 | return link_reconfigure_handler_internal(rtnl, m, link, false); | |
1303 | } | |
572b21d9 | 1304 | |
5a1860f7 YW |
1305 | static int link_force_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1306 | return link_reconfigure_handler_internal(rtnl, m, link, true); | |
572b21d9 YW |
1307 | } |
1308 | ||
1309 | int link_reconfigure(Link *link, bool force) { | |
572b21d9 YW |
1310 | int r; |
1311 | ||
8bceafa7 | 1312 | /* When link in pending or initialized state, then link_configure() will be called. To prevent |
f8dd4077 ZJS |
1313 | * the function from being called multiple times simultaneously, refuse to reconfigure the |
1314 | * interface in these cases. */ | |
8bceafa7 | 1315 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED, LINK_STATE_LINGER)) |
f8dd4077 | 1316 | return 0; /* 0 means no-op. */ |
2c0d7ed3 | 1317 | |
5a1860f7 | 1318 | r = link_call_getlink(link, force ? link_force_reconfigure_handler : link_reconfigure_handler); |
572b21d9 YW |
1319 | if (r < 0) |
1320 | return r; | |
1321 | ||
8bceafa7 | 1322 | return 1; /* 1 means the interface will be reconfigured. */ |
572b21d9 YW |
1323 | } |
1324 | ||
e6bf7774 | 1325 | static int link_initialized_and_synced(Link *link) { |
505f8da7 | 1326 | Network *network; |
505f8da7 TG |
1327 | int r; |
1328 | ||
1329 | assert(link); | |
1330 | assert(link->ifname); | |
1331 | assert(link->manager); | |
1332 | ||
bd08ce56 | 1333 | /* We may get called either from the asynchronous netlink callback, |
0d411b7f | 1334 | * or directly from link_check_initialized() if running in a container. */ |
bd08ce56 | 1335 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) |
4232cf04 | 1336 | return 0; |
505f8da7 | 1337 | |
6a7a4e4d | 1338 | log_link_debug(link, "Link state is up-to-date"); |
bd08ce56 | 1339 | link_set_state(link, LINK_STATE_INITIALIZED); |
505f8da7 | 1340 | |
0d4ad91d AR |
1341 | r = link_new_bound_by_list(link); |
1342 | if (r < 0) | |
1343 | return r; | |
1344 | ||
1345 | r = link_handle_bound_by_list(link); | |
1346 | if (r < 0) | |
1347 | return r; | |
1348 | ||
c4a03a56 | 1349 | if (!link->network) { |
0894cfe4 | 1350 | r = wifi_get_info(link); |
8d968fdd YW |
1351 | if (r < 0) |
1352 | return r; | |
1353 | ||
170e88c8 | 1354 | r = link_get_network(link, &network); |
c4a03a56 | 1355 | if (r == -ENOENT) { |
29836c16 | 1356 | link_set_state(link, LINK_STATE_UNMANAGED); |
4232cf04 | 1357 | return 0; |
170e88c8 YW |
1358 | } |
1359 | if (r < 0) | |
c4a03a56 | 1360 | return r; |
505f8da7 | 1361 | |
c4a03a56 TG |
1362 | if (link->flags & IFF_LOOPBACK) { |
1363 | if (network->link_local != ADDRESS_FAMILY_NO) | |
1364 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 1365 | |
c4a03a56 TG |
1366 | if (network->dhcp != ADDRESS_FAMILY_NO) |
1367 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 1368 | |
c4a03a56 TG |
1369 | if (network->dhcp_server) |
1370 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
1371 | } | |
bd2efe92 | 1372 | |
9092113d | 1373 | link->network = network_ref(network); |
bcdcc596 | 1374 | link_update_operstate(link, false); |
9092113d | 1375 | link_dirty(link); |
c4a03a56 | 1376 | } |
505f8da7 | 1377 | |
0d4ad91d AR |
1378 | r = link_new_bound_to_list(link); |
1379 | if (r < 0) | |
1380 | return r; | |
1381 | ||
852a3916 | 1382 | return link_configure(link); |
505f8da7 TG |
1383 | } |
1384 | ||
302a796f | 1385 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4ff296b0 YW |
1386 | int r; |
1387 | ||
5a1860f7 YW |
1388 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to wait for the interface to be initialized"); |
1389 | if (r <= 0) | |
0b54c870 | 1390 | return r; |
572b21d9 | 1391 | |
4ff296b0 YW |
1392 | r = link_initialized_and_synced(link); |
1393 | if (r < 0) | |
1394 | link_enter_failed(link); | |
5a1860f7 YW |
1395 | |
1396 | return 0; | |
e6bf7774 YW |
1397 | } |
1398 | ||
3be9d62a | 1399 | static int link_initialized(Link *link, sd_device *device) { |
4f561e8e | 1400 | assert(link); |
4f561e8e TG |
1401 | assert(device); |
1402 | ||
8434fd5c | 1403 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
1404 | return 0; |
1405 | ||
51517f9e | 1406 | if (link->sd_device) |
679b3605 TG |
1407 | return 0; |
1408 | ||
79008bdd | 1409 | log_link_debug(link, "udev initialized link"); |
bd08ce56 | 1410 | link_set_state(link, LINK_STATE_INITIALIZED); |
4f561e8e | 1411 | |
51517f9e | 1412 | link->sd_device = sd_device_ref(device); |
4f561e8e | 1413 | |
3c9b8860 TG |
1414 | /* udev has initialized the link, but we don't know if we have yet |
1415 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
1416 | * when it returns we know that the pending NEWLINKs have already been | |
1417 | * processed and that we are up-to-date */ | |
4f561e8e | 1418 | |
5a1860f7 | 1419 | return link_call_getlink(link, link_initialized_handler); |
cc2d7efc YW |
1420 | } |
1421 | ||
0d411b7f | 1422 | static int link_check_initialized(Link *link) { |
51517f9e | 1423 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
5a937ea2 | 1424 | int r; |
505f8da7 | 1425 | |
0d411b7f | 1426 | assert(link); |
505f8da7 | 1427 | |
0d411b7f | 1428 | if (path_is_read_only_fs("/sys") > 0) |
852a3916 | 1429 | /* no udev */ |
0d411b7f | 1430 | return link_initialized_and_synced(link); |
852a3916 YW |
1431 | |
1432 | /* udev should be around */ | |
0ac655a6 | 1433 | r = sd_device_new_from_ifindex(&device, link->ifindex); |
852a3916 YW |
1434 | if (r < 0) { |
1435 | log_link_debug_errno(link, r, "Could not find device, waiting for device initialization: %m"); | |
1436 | return 0; | |
1437 | } | |
1438 | ||
1439 | r = sd_device_get_is_initialized(device); | |
0d411b7f YW |
1440 | if (r < 0) |
1441 | return log_link_warning_errno(link, r, "Could not determine whether the device is initialized: %m"); | |
852a3916 YW |
1442 | if (r == 0) { |
1443 | /* not yet ready */ | |
1444 | log_link_debug(link, "link pending udev initialization..."); | |
1445 | return 0; | |
1446 | } | |
1447 | ||
1448 | r = device_is_renaming(device); | |
0d411b7f YW |
1449 | if (r < 0) |
1450 | return log_link_warning_errno(link, r, "Failed to determine the device is being renamed: %m"); | |
852a3916 YW |
1451 | if (r > 0) { |
1452 | log_link_debug(link, "Interface is being renamed, pending initialization."); | |
1453 | return 0; | |
4f561e8e | 1454 | } |
505f8da7 | 1455 | |
0d411b7f | 1456 | return link_initialized(link, device); |
a748b692 TG |
1457 | } |
1458 | ||
3be9d62a YW |
1459 | int manager_udev_process_link(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
1460 | sd_device_action_t action; | |
1461 | Manager *m = userdata; | |
1462 | Link *link = NULL; | |
1463 | int r, ifindex; | |
1464 | ||
1465 | assert(m); | |
1466 | assert(device); | |
1467 | ||
1468 | r = sd_device_get_action(device, &action); | |
1469 | if (r < 0) { | |
1470 | log_device_debug_errno(device, r, "Failed to get udev action, ignoring device: %m"); | |
1471 | return 0; | |
1472 | } | |
1473 | ||
1474 | /* Ignore the "remove" uevent — let's remove a device only if rtnetlink says so. All other uevents | |
1475 | * are "positive" events in some form, i.e. inform us about a changed or new network interface, that | |
1476 | * still exists — and we are interested in that. */ | |
1477 | if (action == SD_DEVICE_REMOVE) | |
1478 | return 0; | |
1479 | ||
1480 | r = sd_device_get_ifindex(device, &ifindex); | |
1481 | if (r < 0) { | |
1482 | log_device_debug_errno(device, r, "Ignoring udev %s event for device without ifindex or with invalid ifindex: %m", | |
1483 | device_action_to_string(action)); | |
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | r = device_is_renaming(device); | |
1488 | if (r < 0) { | |
4b9a8c2b | 1489 | log_device_debug_errno(device, r, "Failed to determine the device is renamed or not, ignoring '%s' uevent: %m", |
3be9d62a YW |
1490 | device_action_to_string(action)); |
1491 | return 0; | |
1492 | } | |
1493 | if (r > 0) { | |
1494 | log_device_debug(device, "Interface is under renaming, wait for the interface to be renamed."); | |
1495 | return 0; | |
1496 | } | |
1497 | ||
6eab614d | 1498 | r = link_get_by_index(m, ifindex, &link); |
3be9d62a | 1499 | if (r < 0) { |
4b9a8c2b | 1500 | log_device_debug_errno(device, r, "Failed to get link from ifindex %i, ignoring: %m", ifindex); |
3be9d62a YW |
1501 | return 0; |
1502 | } | |
1503 | ||
4b9a8c2b YW |
1504 | r = link_initialized(link, device); |
1505 | if (r < 0) | |
1506 | link_enter_failed(link); | |
3be9d62a YW |
1507 | |
1508 | return 0; | |
1509 | } | |
1510 | ||
9c0a72f9 TG |
1511 | static int link_carrier_gained(Link *link) { |
1512 | int r; | |
1513 | ||
1514 | assert(link); | |
1515 | ||
aa9117c0 YW |
1516 | r = link_handle_bound_by_list(link); |
1517 | if (r < 0) | |
1518 | return r; | |
1519 | ||
600b7898 YW |
1520 | if (link->iftype == ARPHRD_CAN) |
1521 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
aa9117c0 | 1522 | return 0; |
600b7898 | 1523 | |
b9ea3d2e | 1524 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
8566df79 | 1525 | r = link_acquire_dynamic_conf(link); |
f0269653 | 1526 | if (r < 0) |
9c0a72f9 | 1527 | return r; |
6fc25497 | 1528 | |
97108953 | 1529 | r = link_request_static_configs(link); |
6fc25497 SS |
1530 | if (r < 0) |
1531 | return r; | |
9c0a72f9 TG |
1532 | } |
1533 | ||
aa9117c0 | 1534 | return 0; |
9c0a72f9 TG |
1535 | } |
1536 | ||
1537 | static int link_carrier_lost(Link *link) { | |
1538 | int r; | |
1539 | ||
1540 | assert(link); | |
1541 | ||
aa9117c0 YW |
1542 | r = link_handle_bound_by_list(link); |
1543 | if (r < 0) | |
1544 | return r; | |
93b4dab5 | 1545 | |
600b7898 YW |
1546 | if (link->iftype == ARPHRD_CAN) |
1547 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
aa9117c0 YW |
1548 | return 0; |
1549 | ||
1550 | if (link->network && link->network->ignore_carrier_loss) | |
1551 | return 0; | |
600b7898 | 1552 | |
2a99eed0 | 1553 | r = link_stop_engines(link, false); |
9c0a72f9 TG |
1554 | if (r < 0) { |
1555 | link_enter_failed(link); | |
1556 | return r; | |
1557 | } | |
1558 | ||
3104883d SS |
1559 | r = link_drop_config(link); |
1560 | if (r < 0) | |
1561 | return r; | |
1562 | ||
2c7b826d | 1563 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
942cf4b8 | 1564 | log_link_debug(link, "State is %s, dropping foreign config", link_state_to_string(link->state)); |
c436d553 MM |
1565 | r = link_drop_foreign_config(link); |
1566 | if (r < 0) | |
1567 | return r; | |
1568 | } | |
3104883d | 1569 | |
aa9117c0 | 1570 | return 0; |
0c9ee5d5 YW |
1571 | } |
1572 | ||
1573 | int link_carrier_reset(Link *link) { | |
1574 | int r; | |
1575 | ||
1576 | assert(link); | |
1577 | ||
852a3916 YW |
1578 | if (!link_has_carrier(link)) |
1579 | return 0; | |
0c9ee5d5 | 1580 | |
852a3916 YW |
1581 | r = link_carrier_lost(link); |
1582 | if (r < 0) | |
1583 | return r; | |
0c9ee5d5 | 1584 | |
852a3916 YW |
1585 | r = link_carrier_gained(link); |
1586 | if (r < 0) | |
1587 | return r; | |
0c9ee5d5 | 1588 | |
852a3916 | 1589 | log_link_info(link, "Reset carrier"); |
0c9ee5d5 YW |
1590 | return 0; |
1591 | } | |
1592 | ||
1593 | static int link_admin_state_up(Link *link) { | |
1594 | int r; | |
1595 | ||
1596 | assert(link); | |
1597 | ||
1598 | /* This is called every time an interface admin state changes to up; | |
1599 | * specifically, when IFF_UP flag changes from unset to set. */ | |
1600 | ||
1601 | if (!link->network) | |
1602 | return 0; | |
1603 | ||
899b0e5e | 1604 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_DOWN) { |
712fd5d2 YW |
1605 | log_link_info(link, "ActivationPolicy is \"always-off\", forcing link down."); |
1606 | return link_request_to_bring_up_or_down(link, /* up = */ false); | |
0c9ee5d5 YW |
1607 | } |
1608 | ||
1609 | /* We set the ipv6 mtu after the device mtu, but the kernel resets | |
1610 | * ipv6 mtu on NETDEV_UP, so we need to reset it. */ | |
1611 | r = link_set_ipv6_mtu(link); | |
1612 | if (r < 0) | |
1613 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU, ignoring: %m"); | |
1614 | ||
1615 | return 0; | |
1616 | } | |
1617 | ||
1618 | static int link_admin_state_down(Link *link) { | |
1619 | assert(link); | |
1620 | ||
1621 | if (!link->network) | |
1622 | return 0; | |
1623 | ||
899b0e5e | 1624 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_UP) { |
712fd5d2 YW |
1625 | log_link_info(link, "ActivationPolicy is \"always-on\", forcing link up."); |
1626 | return link_request_to_bring_up_or_down(link, /* up = */ true); | |
0c9ee5d5 YW |
1627 | } |
1628 | ||
1629 | return 0; | |
1630 | } | |
1631 | ||
1632 | bool link_has_carrier(Link *link) { | |
1633 | /* see Documentation/networking/operstates.txt in the kernel sources */ | |
1634 | ||
1635 | if (link->kernel_operstate == IF_OPER_UP) | |
1636 | return true; | |
1637 | ||
1638 | if (link->kernel_operstate == IF_OPER_UNKNOWN) | |
1639 | /* operstate may not be implemented, so fall back to flags */ | |
1640 | if (FLAGS_SET(link->flags, IFF_LOWER_UP | IFF_RUNNING) && | |
1641 | !FLAGS_SET(link->flags, IFF_DORMANT)) | |
1642 | return true; | |
1643 | ||
1644 | return false; | |
1645 | } | |
1646 | ||
1647 | static bool link_is_enslaved(Link *link) { | |
1648 | if (link->flags & IFF_SLAVE) | |
1649 | /* Even if the link is not managed by networkd, honor IFF_SLAVE flag. */ | |
1650 | return true; | |
1651 | ||
1652 | if (!link->network) | |
1653 | return false; | |
1654 | ||
1655 | if (link->master_ifindex > 0 && link->network->bridge) | |
1656 | return true; | |
1657 | ||
1658 | /* TODO: add conditions for other netdevs. */ | |
1659 | ||
1660 | return false; | |
1661 | } | |
1662 | ||
1663 | static LinkAddressState address_state_from_scope(uint8_t scope) { | |
1664 | if (scope < RT_SCOPE_SITE) | |
1665 | /* universally accessible addresses found */ | |
1666 | return LINK_ADDRESS_STATE_ROUTABLE; | |
1667 | ||
1668 | if (scope < RT_SCOPE_HOST) | |
1669 | /* only link or site local addresses found */ | |
1670 | return LINK_ADDRESS_STATE_DEGRADED; | |
1671 | ||
1672 | /* no useful addresses found */ | |
1673 | return LINK_ADDRESS_STATE_OFF; | |
1674 | } | |
1675 | ||
1676 | void link_update_operstate(Link *link, bool also_update_master) { | |
1677 | LinkOperationalState operstate; | |
1678 | LinkCarrierState carrier_state; | |
1679 | LinkAddressState ipv4_address_state, ipv6_address_state, address_state; | |
1680 | LinkOnlineState online_state; | |
1681 | _cleanup_strv_free_ char **p = NULL; | |
1682 | uint8_t ipv4_scope = RT_SCOPE_NOWHERE, ipv6_scope = RT_SCOPE_NOWHERE; | |
1683 | bool changed = false; | |
1684 | Address *address; | |
1685 | ||
1686 | assert(link); | |
1687 | ||
1688 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
1689 | carrier_state = LINK_CARRIER_STATE_DORMANT; | |
1690 | else if (link_has_carrier(link)) { | |
1691 | if (link_is_enslaved(link)) | |
1692 | carrier_state = LINK_CARRIER_STATE_ENSLAVED; | |
1693 | else | |
1694 | carrier_state = LINK_CARRIER_STATE_CARRIER; | |
1695 | } else if (link->flags & IFF_UP) | |
1696 | carrier_state = LINK_CARRIER_STATE_NO_CARRIER; | |
1697 | else | |
1698 | carrier_state = LINK_CARRIER_STATE_OFF; | |
1699 | ||
1700 | if (carrier_state >= LINK_CARRIER_STATE_CARRIER) { | |
1701 | Link *slave; | |
1702 | ||
1703 | SET_FOREACH(slave, link->slaves) { | |
1704 | link_update_operstate(slave, false); | |
1705 | ||
1706 | if (slave->carrier_state < LINK_CARRIER_STATE_CARRIER) | |
1707 | carrier_state = LINK_CARRIER_STATE_DEGRADED_CARRIER; | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | SET_FOREACH(address, link->addresses) { | |
1712 | if (!address_is_ready(address)) | |
1713 | continue; | |
1714 | ||
1715 | if (address->family == AF_INET) | |
1716 | ipv4_scope = MIN(ipv4_scope, address->scope); | |
1717 | ||
1718 | if (address->family == AF_INET6) | |
1719 | ipv6_scope = MIN(ipv6_scope, address->scope); | |
1720 | } | |
1721 | ||
1722 | /* for operstate we also take foreign addresses into account */ | |
1723 | SET_FOREACH(address, link->addresses_foreign) { | |
1724 | if (!address_is_ready(address)) | |
1725 | continue; | |
1726 | ||
1727 | if (address->family == AF_INET) | |
1728 | ipv4_scope = MIN(ipv4_scope, address->scope); | |
1729 | ||
1730 | if (address->family == AF_INET6) | |
1731 | ipv6_scope = MIN(ipv6_scope, address->scope); | |
1732 | } | |
1733 | ||
1734 | ipv4_address_state = address_state_from_scope(ipv4_scope); | |
1735 | ipv6_address_state = address_state_from_scope(ipv6_scope); | |
1736 | address_state = address_state_from_scope(MIN(ipv4_scope, ipv6_scope)); | |
1737 | ||
1738 | /* Mapping of address and carrier state vs operational state | |
1739 | * carrier state | |
1740 | * | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
1741 | * ------------------------------------------------------------------------------ | |
1742 | * off | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
1743 | * address_state degraded | off | no-carrier | dormant | degraded-carrier | degraded | enslaved | |
1744 | * routable | off | no-carrier | dormant | degraded-carrier | routable | routable | |
1745 | */ | |
1746 | ||
1747 | if (carrier_state < LINK_CARRIER_STATE_CARRIER || address_state == LINK_ADDRESS_STATE_OFF) | |
1748 | operstate = (LinkOperationalState) carrier_state; | |
1749 | else if (address_state == LINK_ADDRESS_STATE_ROUTABLE) | |
1750 | operstate = LINK_OPERSTATE_ROUTABLE; | |
1751 | else if (carrier_state == LINK_CARRIER_STATE_CARRIER) | |
1752 | operstate = LINK_OPERSTATE_DEGRADED; | |
1753 | else | |
1754 | operstate = LINK_OPERSTATE_ENSLAVED; | |
1755 | ||
1756 | /* Only determine online state for managed links with RequiredForOnline=yes */ | |
1757 | if (!link->network || !link->network->required_for_online) | |
1758 | online_state = _LINK_ONLINE_STATE_INVALID; | |
1759 | else if (operstate < link->network->required_operstate_for_online.min || | |
1760 | operstate > link->network->required_operstate_for_online.max) | |
1761 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1762 | else { | |
1763 | AddressFamily required_family = link->network->required_family_for_online; | |
1764 | bool needs_ipv4 = required_family & ADDRESS_FAMILY_IPV4; | |
1765 | bool needs_ipv6 = required_family & ADDRESS_FAMILY_IPV6; | |
1766 | ||
1767 | /* The operational state is within the range required for online. | |
1768 | * If a particular address family is also required, we might revert | |
1769 | * to offline in the blocks below. */ | |
1770 | online_state = LINK_ONLINE_STATE_ONLINE; | |
1771 | ||
1772 | if (link->network->required_operstate_for_online.min >= LINK_OPERSTATE_DEGRADED) { | |
1773 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_DEGRADED) | |
1774 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1775 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_DEGRADED) | |
1776 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1777 | } | |
1778 | ||
1779 | if (link->network->required_operstate_for_online.min >= LINK_OPERSTATE_ROUTABLE) { | |
1780 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_ROUTABLE) | |
1781 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1782 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_ROUTABLE) | |
1783 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1784 | } | |
1785 | } | |
1786 | ||
1787 | if (link->carrier_state != carrier_state) { | |
1788 | link->carrier_state = carrier_state; | |
1789 | changed = true; | |
1790 | if (strv_extend(&p, "CarrierState") < 0) | |
1791 | log_oom(); | |
1792 | } | |
1793 | ||
1794 | if (link->address_state != address_state) { | |
1795 | link->address_state = address_state; | |
1796 | changed = true; | |
1797 | if (strv_extend(&p, "AddressState") < 0) | |
1798 | log_oom(); | |
1799 | } | |
0d4ad91d | 1800 | |
0c9ee5d5 YW |
1801 | if (link->ipv4_address_state != ipv4_address_state) { |
1802 | link->ipv4_address_state = ipv4_address_state; | |
1803 | changed = true; | |
1804 | if (strv_extend(&p, "IPv4AddressState") < 0) | |
1805 | log_oom(); | |
1806 | } | |
9c0a72f9 | 1807 | |
0c9ee5d5 YW |
1808 | if (link->ipv6_address_state != ipv6_address_state) { |
1809 | link->ipv6_address_state = ipv6_address_state; | |
1810 | changed = true; | |
1811 | if (strv_extend(&p, "IPv6AddressState") < 0) | |
1812 | log_oom(); | |
1813 | } | |
9c0a72f9 | 1814 | |
0c9ee5d5 YW |
1815 | if (link->operstate != operstate) { |
1816 | link->operstate = operstate; | |
1817 | changed = true; | |
1818 | if (strv_extend(&p, "OperationalState") < 0) | |
1819 | log_oom(); | |
1820 | } | |
9c0a72f9 | 1821 | |
0c9ee5d5 YW |
1822 | if (link->online_state != online_state) { |
1823 | link->online_state = online_state; | |
1824 | changed = true; | |
1825 | if (strv_extend(&p, "OnlineState") < 0) | |
1826 | log_oom(); | |
1827 | } | |
9c0a72f9 | 1828 | |
0c9ee5d5 YW |
1829 | if (p) |
1830 | link_send_changed_strv(link, p); | |
1831 | if (changed) | |
1832 | link_dirty(link); | |
9c0a72f9 | 1833 | |
0c9ee5d5 YW |
1834 | if (also_update_master) { |
1835 | Link *master; | |
9c0a72f9 | 1836 | |
0c9ee5d5 YW |
1837 | if (link_get_master(link, &master) >= 0) |
1838 | link_update_operstate(master, true); | |
1839 | } | |
9c0a72f9 TG |
1840 | } |
1841 | ||
0c9ee5d5 YW |
1842 | #define FLAG_STRING(string, flag, old, new) \ |
1843 | (((old ^ new) & flag) \ | |
1844 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
1845 | : "") | |
1846 | ||
0d411b7f | 1847 | static int link_update_flags(Link *link, sd_netlink_message *message) { |
710fa1b3 | 1848 | bool link_was_lower_up, link_was_admin_up, had_carrier; |
0c9ee5d5 YW |
1849 | uint8_t operstate; |
1850 | unsigned flags; | |
d236718c DS |
1851 | int r; |
1852 | ||
61135582 | 1853 | assert(link); |
0d411b7f | 1854 | assert(message); |
61135582 | 1855 | |
0d411b7f | 1856 | r = sd_rtnl_message_link_get_flags(message, &flags); |
0c9ee5d5 | 1857 | if (r < 0) |
0d411b7f | 1858 | return log_link_debug_errno(link, r, "rtnl: failed to read link flags: %m"); |
3be9d62a | 1859 | |
0d411b7f YW |
1860 | r = sd_netlink_message_read_u8(message, IFLA_OPERSTATE, &operstate); |
1861 | if (r == -ENODATA) | |
1862 | /* If we got a message without operstate, assume the state was unchanged. */ | |
0c9ee5d5 | 1863 | operstate = link->kernel_operstate; |
0d411b7f YW |
1864 | else if (r < 0) |
1865 | return log_link_debug_errno(link, r, "rtnl: failed to read operational state: %m"); | |
0c9ee5d5 | 1866 | |
0d411b7f | 1867 | if (link->flags == flags && link->kernel_operstate == operstate) |
61135582 DS |
1868 | return 0; |
1869 | ||
0c9ee5d5 YW |
1870 | if (link->flags != flags) { |
1871 | unsigned unknown_flags, unknown_flags_added, unknown_flags_removed; | |
61135582 | 1872 | |
0c9ee5d5 YW |
1873 | 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", |
1874 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), | |
1875 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
1876 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
1877 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
1878 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
1879 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
1880 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
1881 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
1882 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
1883 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
1884 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
1885 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
1886 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
1887 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
1888 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
1889 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
1890 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
1891 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
1892 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
d236718c | 1893 | |
0c9ee5d5 YW |
1894 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | |
1895 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
1896 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
1897 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
1898 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
1899 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
1900 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
1901 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
d236718c | 1902 | |
0c9ee5d5 YW |
1903 | if (unknown_flags_added) |
1904 | log_link_debug(link, "Unknown link flags gained, ignoring: %#.5x", unknown_flags_added); | |
61135582 | 1905 | |
0c9ee5d5 YW |
1906 | if (unknown_flags_removed) |
1907 | log_link_debug(link, "Unknown link flags lost, ignoring: %#.5x", unknown_flags_removed); | |
1908 | } | |
61135582 | 1909 | |
710fa1b3 | 1910 | link_was_lower_up = link->flags & IFF_LOWER_UP; |
0d411b7f YW |
1911 | link_was_admin_up = link->flags & IFF_UP; |
1912 | had_carrier = link_has_carrier(link); | |
1913 | ||
0c9ee5d5 YW |
1914 | link->flags = flags; |
1915 | link->kernel_operstate = operstate; | |
36161cba | 1916 | |
0c9ee5d5 | 1917 | link_update_operstate(link, true); |
61135582 | 1918 | |
710fa1b3 YW |
1919 | if (!link_was_lower_up && (link->flags & IFF_LOWER_UP)) { |
1920 | r = wifi_get_info(link); | |
1921 | if (r < 0) | |
1922 | return r; | |
1923 | if (r > 0) { | |
1924 | /* All link information is up-to-date. So, it is not necessary to call | |
1925 | * RTM_GETLINK netlink method again. */ | |
1926 | r = link_reconfigure_impl(link, /* force = */ false); | |
1927 | if (r < 0) | |
1928 | return r; | |
1929 | } | |
1930 | } | |
1931 | ||
0d411b7f YW |
1932 | if (!link_was_admin_up && (link->flags & IFF_UP)) { |
1933 | log_link_info(link, "Link UP"); | |
22936833 | 1934 | |
0d411b7f YW |
1935 | r = link_admin_state_up(link); |
1936 | if (r < 0) | |
1937 | return r; | |
1938 | } else if (link_was_admin_up && !(link->flags & IFF_UP)) { | |
1939 | log_link_info(link, "Link DOWN"); | |
0d4ad91d | 1940 | |
0d411b7f | 1941 | r = link_admin_state_down(link); |
0d4ad91d AR |
1942 | if (r < 0) |
1943 | return r; | |
7619683b TG |
1944 | } |
1945 | ||
0d411b7f YW |
1946 | r = link_update_lldp(link); |
1947 | if (r < 0) | |
1948 | return r; | |
b8941f74 | 1949 | |
0d411b7f YW |
1950 | if (!had_carrier && link_has_carrier(link)) { |
1951 | log_link_info(link, "Gained carrier"); | |
0d4ad91d | 1952 | |
0d411b7f | 1953 | r = link_carrier_gained(link); |
30de2b89 YW |
1954 | if (r < 0) |
1955 | return r; | |
0d411b7f YW |
1956 | } else if (had_carrier && !link_has_carrier(link)) { |
1957 | log_link_info(link, "Lost carrier"); | |
1958 | ||
1959 | r = link_carrier_lost(link); | |
0b54c870 YW |
1960 | if (r < 0) |
1961 | return r; | |
b8941f74 TG |
1962 | } |
1963 | ||
0d411b7f YW |
1964 | return 0; |
1965 | } | |
afe7fd56 | 1966 | |
0d411b7f YW |
1967 | static int link_update_master(Link *link, sd_netlink_message *message) { |
1968 | int master_ifindex, r; | |
7465dd22 | 1969 | |
0d411b7f YW |
1970 | assert(link); |
1971 | assert(message); | |
69629de9 | 1972 | |
0d411b7f YW |
1973 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t*) &master_ifindex); |
1974 | if (r == -ENODATA) | |
1975 | return 0; | |
1976 | if (r < 0) | |
1977 | return log_link_debug_errno(link, r, "rtnl: failed to read master ifindex: %m"); | |
807667f7 | 1978 | |
0d411b7f YW |
1979 | if (master_ifindex == link->master_ifindex) |
1980 | return 0; | |
807667f7 | 1981 | |
0d411b7f YW |
1982 | if (link->master_ifindex == 0) |
1983 | log_link_debug(link, "Joined to master interface: %i", master_ifindex); | |
1984 | else if (master_ifindex == 0) | |
1985 | log_link_debug(link, "Leaved from master interface: %i", link->master_ifindex); | |
1986 | else | |
1987 | log_link_debug(link, "Master interface is changed: %i → %i", link->master_ifindex, master_ifindex); | |
807667f7 | 1988 | |
0d411b7f | 1989 | link_drop_from_master(link); |
807667f7 | 1990 | |
0d411b7f | 1991 | link->master_ifindex = master_ifindex; |
413708d1 | 1992 | |
0d411b7f YW |
1993 | r = link_append_to_master(link); |
1994 | if (r < 0) | |
1995 | return log_link_debug_errno(link, r, "Failed to append link to master: %m"); | |
7465dd22 | 1996 | |
0d411b7f YW |
1997 | return 0; |
1998 | } | |
807667f7 | 1999 | |
0d411b7f | 2000 | static int link_update_hardware_address(Link *link, sd_netlink_message *message) { |
fe321d45 | 2001 | struct hw_addr_data old; |
0d411b7f | 2002 | int r; |
d93d655c | 2003 | |
0d411b7f YW |
2004 | assert(link); |
2005 | assert(message); | |
dfc58b47 | 2006 | |
0d411b7f YW |
2007 | r = netlink_message_read_hw_addr(message, IFLA_BROADCAST, &link->bcast_addr); |
2008 | if (r < 0 && r != -ENODATA) | |
2009 | return log_link_debug_errno(link, r, "rtnl: failed to read broadcast address: %m"); | |
4f882b2a | 2010 | |
fe321d45 YW |
2011 | old = link->hw_addr; |
2012 | r = netlink_message_read_hw_addr(message, IFLA_ADDRESS, &link->hw_addr); | |
0d411b7f YW |
2013 | if (r == -ENODATA) |
2014 | return 0; | |
2015 | if (r < 0) | |
fe321d45 | 2016 | return log_link_debug_errno(link, r, "rtnl: failed to read hardware address: %m"); |
bb262ef0 | 2017 | |
fe321d45 | 2018 | if (hw_addr_equal(&link->hw_addr, &old)) |
0d411b7f | 2019 | return 0; |
a61bb41c | 2020 | |
fe321d45 YW |
2021 | if (hw_addr_is_null(&old)) |
2022 | log_link_debug(link, "Saved hardware address: %s", HW_ADDR_TO_STR(&link->hw_addr)); | |
2023 | else { | |
2024 | log_link_debug(link, "Hardware address is changed: %s → %s", | |
2025 | HW_ADDR_TO_STR(&old), HW_ADDR_TO_STR(&link->hw_addr)); | |
0d411b7f | 2026 | |
fe321d45 YW |
2027 | if (hashmap_get(link->manager->links_by_hw_addr, &old) == link) |
2028 | hashmap_remove(link->manager->links_by_hw_addr, &old); | |
2029 | } | |
2030 | ||
2031 | if (!hw_addr_is_null(&link->hw_addr)) { | |
2032 | r = hashmap_ensure_put(&link->manager->links_by_hw_addr, &hw_addr_hash_ops, &link->hw_addr, link); | |
2033 | if (r == -EEXIST && streq_ptr(link->kind, "bond")) | |
2034 | /* bonding master and its slaves have the same hardware address. */ | |
2035 | r = hashmap_replace(link->manager->links_by_hw_addr, &link->hw_addr, link); | |
2036 | if (r < 0) | |
2037 | log_link_debug_errno(link, r, "Failed to manage link by its new hardware address, ignoring: %m"); | |
2038 | } | |
0d411b7f YW |
2039 | |
2040 | r = ipv4ll_update_mac(link); | |
a61bb41c | 2041 | if (r < 0) |
0d411b7f | 2042 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); |
a61bb41c | 2043 | |
0d411b7f YW |
2044 | r = dhcp4_update_mac(link); |
2045 | if (r < 0) | |
2046 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
d236718c | 2047 | |
0d411b7f YW |
2048 | r = dhcp6_update_mac(link); |
2049 | if (r < 0) | |
2050 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
2051 | ||
2052 | r = radv_update_mac(link); | |
2053 | if (r < 0) | |
2054 | return log_link_debug_errno(link, r, "Could not update MAC address for Router Advertisement: %m"); | |
2055 | ||
2056 | if (link->ndisc) { | |
ca2b7cd8 | 2057 | r = sd_ndisc_set_mac(link->ndisc, &link->hw_addr.ether); |
d236718c | 2058 | if (r < 0) |
0d411b7f YW |
2059 | return log_link_debug_errno(link, r, "Could not update MAC for NDisc: %m"); |
2060 | } | |
d236718c | 2061 | |
0d411b7f | 2062 | if (link->lldp) { |
ca2b7cd8 | 2063 | r = sd_lldp_set_filter_address(link->lldp, &link->hw_addr.ether); |
61135582 | 2064 | if (r < 0) |
0d411b7f | 2065 | return log_link_debug_errno(link, r, "Could not update MAC address for LLDP: %m"); |
61135582 DS |
2066 | } |
2067 | ||
0d411b7f | 2068 | r = ipv4_dad_update_mac(link); |
273eec24 | 2069 | if (r < 0) |
0d411b7f | 2070 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4 ACD client: %m"); |
273eec24 | 2071 | |
0d411b7f YW |
2072 | return 0; |
2073 | } | |
a61bb41c | 2074 | |
0d411b7f | 2075 | static int link_update_mtu(Link *link, sd_netlink_message *message) { |
717ba5fc | 2076 | uint32_t mtu, min_mtu = 0, max_mtu = UINT32_MAX; |
0d411b7f | 2077 | int r; |
a61bb41c | 2078 | |
0d411b7f YW |
2079 | assert(link); |
2080 | assert(message); | |
2081 | ||
2082 | r = sd_netlink_message_read_u32(message, IFLA_MTU, &mtu); | |
2083 | if (r == -ENODATA) | |
2084 | return 0; | |
2085 | if (r < 0) | |
2086 | return log_link_debug_errno(link, r, "rtnl: failed to read MTU in RTM_NEWLINK message: %m"); | |
b5d0fd1e YW |
2087 | if (mtu == 0) |
2088 | return 0; | |
0d411b7f | 2089 | |
717ba5fc YW |
2090 | r = sd_netlink_message_read_u32(message, IFLA_MIN_MTU, &min_mtu); |
2091 | if (r < 0 && r != -ENODATA) | |
2092 | return log_link_debug_errno(link, r, "rtnl: failed to read minimum MTU in RTM_NEWLINK message: %m"); | |
2093 | ||
2094 | r = sd_netlink_message_read_u32(message, IFLA_MAX_MTU, &max_mtu); | |
2095 | if (r < 0 && r != -ENODATA) | |
2096 | return log_link_debug_errno(link, r, "rtnl: failed to read maximum MTU in RTM_NEWLINK message: %m"); | |
2097 | ||
717ba5fc YW |
2098 | if (max_mtu == 0) |
2099 | max_mtu = UINT32_MAX; | |
2100 | ||
2101 | link->min_mtu = min_mtu; | |
2102 | link->max_mtu = max_mtu; | |
2103 | ||
0d411b7f YW |
2104 | if (link->original_mtu == 0) { |
2105 | link->original_mtu = mtu; | |
717ba5fc YW |
2106 | log_link_debug(link, "Saved original MTU %" PRIu32" (min: %"PRIu32", max: %"PRIu32")", |
2107 | link->original_mtu, link->min_mtu, link->max_mtu); | |
0d411b7f YW |
2108 | } |
2109 | ||
717ba5fc YW |
2110 | if (link->mtu == mtu) |
2111 | return 0; | |
2112 | ||
b5d0fd1e YW |
2113 | if (link->mtu != 0) |
2114 | log_link_debug(link, "MTU is changed: %"PRIu32" → %"PRIu32" (min: %"PRIu32", max: %"PRIu32")", | |
2115 | link->mtu, mtu, link->min_mtu, link->max_mtu); | |
0d411b7f YW |
2116 | |
2117 | link->mtu = mtu; | |
2118 | ||
2119 | if (link->dhcp_client) { | |
2120 | r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu); | |
9c0a72f9 | 2121 | if (r < 0) |
0d411b7f YW |
2122 | return log_link_debug_errno(link, r, "Could not update MTU in DHCP client: %m"); |
2123 | } | |
a61bb41c | 2124 | |
0d411b7f YW |
2125 | if (link->radv) { |
2126 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
9c0a72f9 | 2127 | if (r < 0) |
0d411b7f | 2128 | return log_link_debug_errno(link, r, "Could not set MTU for Router Advertisement: %m"); |
a61bb41c TG |
2129 | } |
2130 | ||
2131 | return 0; | |
dd3efc09 | 2132 | } |
fe8db0c5 | 2133 | |
0d411b7f YW |
2134 | static int link_update_alternative_names(Link *link, sd_netlink_message *message) { |
2135 | _cleanup_strv_free_ char **altnames = NULL; | |
2136 | char **n; | |
2137 | int r; | |
2138 | ||
2139 | assert(link); | |
2140 | assert(message); | |
2141 | ||
2142 | r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &altnames); | |
2143 | if (r < 0 && r != -ENODATA) | |
2144 | return log_link_debug_errno(link, r, "rtnl: failed to read alternative names: %m"); | |
2145 | ||
2146 | STRV_FOREACH(n, link->alternative_names) | |
2147 | hashmap_remove(link->manager->links_by_name, *n); | |
2148 | ||
2149 | strv_free_and_replace(link->alternative_names, altnames); | |
2150 | ||
2151 | STRV_FOREACH(n, link->alternative_names) { | |
2152 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, *n, link); | |
2153 | if (r < 0) | |
2154 | return log_link_debug_errno(link, r, "Failed to manage link by its new alternative names: %m"); | |
2155 | } | |
2156 | ||
2157 | return 0; | |
2158 | } | |
2159 | ||
2160 | static int link_update_name(Link *link, sd_netlink_message *message) { | |
2161 | const char *ifname; | |
2162 | int r; | |
2163 | ||
2164 | assert(link); | |
2165 | assert(message); | |
2166 | ||
2167 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); | |
2168 | if (r == -ENODATA) | |
7802194a | 2169 | /* Hmm?? But ok. */ |
0d411b7f YW |
2170 | return 0; |
2171 | if (r < 0) | |
2172 | return log_link_debug_errno(link, r, "Failed to read interface name in RTM_NEWLINK message: %m"); | |
2173 | ||
2174 | if (streq(ifname, link->ifname)) | |
2175 | return 0; | |
2176 | ||
2177 | log_link_info(link, "Interface name change detected, renamed to %s.", ifname); | |
2178 | ||
2179 | hashmap_remove(link->manager->links_by_name, link->ifname); | |
2180 | ||
2181 | r = free_and_strdup(&link->ifname, ifname); | |
2182 | if (r < 0) | |
2183 | return log_oom_debug(); | |
2184 | ||
2185 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, link->ifname, link); | |
2186 | if (r < 0) | |
2187 | return log_link_debug_errno(link, r, "Failed to manage link by its new name: %m"); | |
2188 | ||
2189 | return 0; | |
2190 | } | |
2191 | ||
2192 | static int link_update(Link *link, sd_netlink_message *message) { | |
2193 | int r; | |
2194 | ||
2195 | assert(link); | |
2196 | assert(message); | |
2197 | ||
2198 | r = link_update_name(link, message); | |
2199 | if (r < 0) | |
2200 | return r; | |
2201 | ||
2202 | r = link_update_alternative_names(link, message); | |
2203 | if (r < 0) | |
2204 | return r; | |
2205 | ||
2206 | r = link_update_mtu(link, message); | |
2207 | if (r < 0) | |
2208 | return r; | |
2209 | ||
2210 | r = link_update_hardware_address(link, message); | |
2211 | if (r < 0) | |
2212 | return r; | |
2213 | ||
2214 | r = link_update_master(link, message); | |
2215 | if (r < 0) | |
2216 | return r; | |
2217 | ||
2218 | return link_update_flags(link, message); | |
2219 | } | |
2220 | ||
0c9ee5d5 YW |
2221 | static Link *link_drop_or_unref(Link *link) { |
2222 | if (!link) | |
2223 | return NULL; | |
2224 | if (!link->manager) | |
2225 | return link_unref(link); | |
2226 | return link_drop(link); | |
2227 | } | |
2228 | ||
2229 | DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_drop_or_unref); | |
2230 | ||
2231 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { | |
0d411b7f | 2232 | _cleanup_free_ char *ifname = NULL, *kind = NULL, *state_file = NULL, *lease_file = NULL, *lldp_file = NULL; |
0c9ee5d5 | 2233 | _cleanup_(link_drop_or_unrefp) Link *link = NULL; |
0c9ee5d5 YW |
2234 | unsigned short iftype; |
2235 | int r, ifindex; | |
0c9ee5d5 YW |
2236 | |
2237 | assert(manager); | |
2238 | assert(message); | |
2239 | assert(ret); | |
2240 | ||
0c9ee5d5 YW |
2241 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
2242 | if (r < 0) | |
0d411b7f | 2243 | return log_debug_errno(r, "rtnl: failed to read ifindex from link message: %m"); |
0c9ee5d5 | 2244 | else if (ifindex <= 0) |
0d411b7f | 2245 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "rtnl: received link message without valid ifindex."); |
0c9ee5d5 YW |
2246 | |
2247 | r = sd_rtnl_message_link_get_type(message, &iftype); | |
2248 | if (r < 0) | |
0d411b7f | 2249 | return log_debug_errno(r, "rtnl: failed to read interface type from link message: %m"); |
0c9ee5d5 YW |
2250 | |
2251 | r = sd_netlink_message_read_string_strdup(message, IFLA_IFNAME, &ifname); | |
2252 | if (r < 0) | |
0d411b7f | 2253 | return log_debug_errno(r, "rtnl: failed to read interface name from link message: %m"); |
0c9ee5d5 YW |
2254 | |
2255 | /* check for link kind */ | |
2256 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
2257 | if (r >= 0) { | |
0d411b7f YW |
2258 | r = sd_netlink_message_read_string_strdup(message, IFLA_INFO_KIND, &kind); |
2259 | if (r < 0 && r != -ENODATA) | |
2260 | return log_debug_errno(r, "rtnl: failed to read interface kind from link message: %m"); | |
0c9ee5d5 YW |
2261 | r = sd_netlink_message_exit_container(message); |
2262 | if (r < 0) | |
0d411b7f | 2263 | return log_debug_errno(r, "rtnl: failed to exit IFLA_LINKINFO container: %m"); |
0c9ee5d5 YW |
2264 | } |
2265 | ||
0d411b7f YW |
2266 | if (asprintf(&state_file, "/run/systemd/netif/links/%d", ifindex) < 0) |
2267 | return log_oom_debug(); | |
2268 | ||
2269 | if (asprintf(&lease_file, "/run/systemd/netif/leases/%d", ifindex) < 0) | |
2270 | return log_oom_debug(); | |
2271 | ||
2272 | if (asprintf(&lldp_file, "/run/systemd/netif/lldp/%d", ifindex) < 0) | |
2273 | return log_oom_debug(); | |
2274 | ||
0c9ee5d5 YW |
2275 | link = new(Link, 1); |
2276 | if (!link) | |
2277 | return -ENOMEM; | |
2278 | ||
2279 | *link = (Link) { | |
2280 | .n_ref = 1, | |
2281 | .state = LINK_STATE_PENDING, | |
2282 | .online_state = _LINK_ONLINE_STATE_INVALID, | |
2283 | .ifindex = ifindex, | |
2284 | .iftype = iftype, | |
2285 | .ifname = TAKE_PTR(ifname), | |
2286 | .kind = TAKE_PTR(kind), | |
2287 | ||
0d411b7f YW |
2288 | .state_file = TAKE_PTR(state_file), |
2289 | .lease_file = TAKE_PTR(lease_file), | |
2290 | .lldp_file = TAKE_PTR(lldp_file), | |
2291 | ||
0c9ee5d5 YW |
2292 | .n_dns = UINT_MAX, |
2293 | .dns_default_route = -1, | |
2294 | .llmnr = _RESOLVE_SUPPORT_INVALID, | |
2295 | .mdns = _RESOLVE_SUPPORT_INVALID, | |
2296 | .dnssec_mode = _DNSSEC_MODE_INVALID, | |
2297 | .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID, | |
2298 | }; | |
2299 | ||
6eab614d | 2300 | r = hashmap_ensure_put(&manager->links_by_index, NULL, INT_TO_PTR(link->ifindex), link); |
0c9ee5d5 | 2301 | if (r < 0) |
0d411b7f | 2302 | return log_link_debug_errno(link, r, "Failed to store link into manager: %m"); |
0c9ee5d5 YW |
2303 | |
2304 | link->manager = manager; | |
2305 | ||
0d411b7f | 2306 | r = hashmap_ensure_put(&manager->links_by_name, &string_hash_ops, link->ifname, link); |
0c9ee5d5 | 2307 | if (r < 0) |
0d411b7f | 2308 | return log_link_debug_errno(link, r, "Failed to manage link by its interface name: %m"); |
0c9ee5d5 YW |
2309 | |
2310 | r = ethtool_get_permanent_macaddr(&manager->ethtool_fd, link->ifname, &link->permanent_mac); | |
2311 | if (r < 0) | |
2312 | log_link_debug_errno(link, r, "Permanent MAC address not found for new device, continuing without: %m"); | |
2313 | ||
2314 | r = ethtool_get_driver(&manager->ethtool_fd, link->ifname, &link->driver); | |
2315 | if (r < 0) | |
2316 | log_link_debug_errno(link, r, "Failed to get driver, continuing without: %m"); | |
2317 | ||
0d411b7f | 2318 | log_link_debug(link, "Link %d added", link->ifindex); |
0c9ee5d5 | 2319 | *ret = TAKE_PTR(link); |
0c9ee5d5 YW |
2320 | return 0; |
2321 | } | |
2322 | ||
0d411b7f | 2323 | int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *manager) { |
3be9d62a YW |
2324 | Link *link = NULL; |
2325 | NetDev *netdev = NULL; | |
2326 | uint16_t type; | |
2327 | const char *name; | |
2328 | int r, ifindex; | |
2329 | ||
2330 | assert(rtnl); | |
2331 | assert(message); | |
0d411b7f | 2332 | assert(manager); |
3be9d62a YW |
2333 | |
2334 | if (sd_netlink_message_is_error(message)) { | |
2335 | r = sd_netlink_message_get_errno(message); | |
2336 | if (r < 0) | |
2337 | log_message_warning_errno(message, r, "rtnl: Could not receive link message, ignoring"); | |
2338 | ||
2339 | return 0; | |
2340 | } | |
2341 | ||
2342 | r = sd_netlink_message_get_type(message, &type); | |
2343 | if (r < 0) { | |
2344 | log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m"); | |
2345 | return 0; | |
2346 | } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) { | |
2347 | log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type); | |
2348 | return 0; | |
2349 | } | |
2350 | ||
2351 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
2352 | if (r < 0) { | |
2353 | log_warning_errno(r, "rtnl: Could not get ifindex from link message, ignoring: %m"); | |
2354 | return 0; | |
2355 | } else if (ifindex <= 0) { | |
2356 | log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex); | |
2357 | return 0; | |
2358 | } | |
2359 | ||
2360 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name); | |
2361 | if (r < 0) { | |
2362 | log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m"); | |
2363 | return 0; | |
2364 | } | |
2365 | ||
6eab614d | 2366 | (void) link_get_by_index(manager, ifindex, &link); |
0d411b7f | 2367 | (void) netdev_get(manager, name, &netdev); |
3be9d62a YW |
2368 | |
2369 | switch (type) { | |
2370 | case RTM_NEWLINK: | |
0d411b7f YW |
2371 | if (netdev) { |
2372 | /* netdev exists, so make sure the ifindex matches */ | |
2373 | r = netdev_set_ifindex(netdev, message); | |
2374 | if (r < 0) { | |
2375 | log_warning_errno(r, "Could not process new link message for netdev, ignoring: %m"); | |
2376 | return 0; | |
2377 | } | |
2378 | } | |
2379 | ||
3be9d62a YW |
2380 | if (!link) { |
2381 | /* link is new, so add it */ | |
0d411b7f | 2382 | r = link_new(manager, message, &link); |
3be9d62a | 2383 | if (r < 0) { |
0d411b7f | 2384 | log_warning_errno(r, "Could not process new link message: %m"); |
3be9d62a YW |
2385 | return 0; |
2386 | } | |
3be9d62a | 2387 | |
0d411b7f | 2388 | r = link_update(link, message); |
3be9d62a | 2389 | if (r < 0) { |
0d411b7f YW |
2390 | log_warning_errno(r, "Could not process link message: %m"); |
2391 | link_enter_failed(link); | |
3be9d62a YW |
2392 | return 0; |
2393 | } | |
3be9d62a | 2394 | |
0d411b7f YW |
2395 | r = link_check_initialized(link); |
2396 | if (r < 0) { | |
2397 | log_warning_errno(r, "Failed to check link is initialized: %m"); | |
2398 | link_enter_failed(link); | |
2399 | return 0; | |
2400 | } | |
2401 | } else { | |
2402 | r = link_update(link, message); | |
2403 | if (r < 0) { | |
2404 | log_warning_errno(r, "Could not process link message: %m"); | |
2405 | link_enter_failed(link); | |
2406 | return 0; | |
2407 | } | |
3be9d62a YW |
2408 | } |
2409 | ||
2410 | break; | |
2411 | ||
2412 | case RTM_DELLINK: | |
2413 | link_drop(link); | |
2414 | netdev_drop(netdev); | |
2415 | ||
2416 | break; | |
2417 | ||
2418 | default: | |
2419 | assert_not_reached("Received link message with invalid RTNL message type."); | |
2420 | } | |
2421 | ||
2422 | return 1; | |
2423 | } | |
2424 | ||
79c6e114 YW |
2425 | int link_getlink_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg) { |
2426 | uint16_t message_type; | |
2427 | int r; | |
2428 | ||
2429 | assert(m); | |
2430 | assert(link); | |
2431 | assert(error_msg); | |
2432 | ||
2433 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
2434 | return 0; | |
2435 | ||
2436 | r = sd_netlink_message_get_errno(m); | |
2437 | if (r < 0) { | |
2438 | log_link_message_warning_errno(link, m, r, error_msg); | |
2439 | link_enter_failed(link); | |
2440 | return 0; | |
2441 | } | |
2442 | ||
2443 | r = sd_netlink_message_get_type(m, &message_type); | |
2444 | if (r < 0) { | |
2445 | log_link_debug_errno(link, r, "rtnl: failed to read link message type, ignoring: %m"); | |
2446 | return 0; | |
2447 | } | |
2448 | if (message_type != RTM_NEWLINK) { | |
2449 | log_link_debug(link, "rtnl: received invalid link message type, ignoring."); | |
2450 | return 0; | |
2451 | } | |
2452 | ||
2453 | r = link_update(link, m); | |
2454 | if (r < 0) { | |
2455 | link_enter_failed(link); | |
2456 | return 0; | |
2457 | } | |
2458 | ||
2459 | return 1; | |
2460 | } | |
2461 | ||
2462 | int link_call_getlink(Link *link, link_netlink_message_handler_t callback) { | |
2463 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
2464 | int r; | |
2465 | ||
2466 | assert(link); | |
2467 | assert(link->manager); | |
2468 | assert(link->manager->rtnl); | |
2469 | assert(callback); | |
2470 | ||
2471 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, link->ifindex); | |
2472 | if (r < 0) | |
2473 | return r; | |
2474 | ||
2475 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, | |
2476 | link_netlink_destroy_callback, link); | |
2477 | if (r < 0) | |
2478 | return r; | |
2479 | ||
2480 | link_ref(link); | |
2481 | return 0; | |
2482 | } | |
2483 | ||
fe8db0c5 | 2484 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 2485 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 2486 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 2487 | [LINK_STATE_CONFIGURING] = "configuring", |
fe8db0c5 | 2488 | [LINK_STATE_CONFIGURED] = "configured", |
57bd6899 | 2489 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2490 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2491 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2492 | }; |
2493 | ||
2494 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); |