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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
f579559b | 2 | |
176b8be1 | 3 | #include <net/if.h> |
9aa5d8ba | 4 | #include <netinet/in.h> |
f579559b | 5 | #include <linux/if.h> |
8f815e8b | 6 | #include <linux/if_arp.h> |
518cd6b5 | 7 | #include <linux/if_link.h> |
2a0d07d6 | 8 | #include <linux/netdevice.h> |
8430841b | 9 | #include <sys/socket.h> |
4cc7a82c | 10 | #include <unistd.h> |
f579559b | 11 | |
b5efdb8a | 12 | #include "alloc-util.h" |
8a77e245 | 13 | #include "arphrd-util.h" |
c0267a59 | 14 | #include "batadv.h" |
737f1405 YW |
15 | #include "bond.h" |
16 | #include "bridge.h" | |
1346b1f0 | 17 | #include "bus-util.h" |
3be9d62a YW |
18 | #include "device-private.h" |
19 | #include "device-util.h" | |
27dfc982 | 20 | #include "dhcp-identifier.h" |
bd91b83e | 21 | #include "dhcp-lease-internal.h" |
686d13b9 | 22 | #include "env-file.h" |
4bb7cc82 | 23 | #include "ethtool-util.h" |
6706ce2f | 24 | #include "event-util.h" |
3ffd4af2 | 25 | #include "fd-util.h" |
cf1d700d | 26 | #include "fileio.h" |
176b8be1 | 27 | #include "format-util.h" |
af664001 | 28 | #include "fs-util.h" |
737f1405 | 29 | #include "ipvlan.h" |
ef118d00 | 30 | #include "missing_network.h" |
cf1d700d | 31 | #include "netlink-util.h" |
c6f7c917 | 32 | #include "network-internal.h" |
fb486c90 | 33 | #include "networkd-address-label.h" |
093e3533 | 34 | #include "networkd-address.h" |
9671ae9d | 35 | #include "networkd-bridge-fdb.h" |
ff9e0783 | 36 | #include "networkd-bridge-mdb.h" |
3ddcbeea | 37 | #include "networkd-can.h" |
d5ebcf65 | 38 | #include "networkd-dhcp-prefix-delegation.h" |
8fcf1d61 | 39 | #include "networkd-dhcp-server.h" |
ca5ad760 YW |
40 | #include "networkd-dhcp4.h" |
41 | #include "networkd-dhcp6.h" | |
76a86ffd | 42 | #include "networkd-ipv4acd.h" |
ca5ad760 | 43 | #include "networkd-ipv4ll.h" |
76c5a0f2 | 44 | #include "networkd-ipv6-proxy-ndp.h" |
6a1af3d4 YW |
45 | #include "networkd-link-bus.h" |
46 | #include "networkd-link.h" | |
8e1ad1ea | 47 | #include "networkd-lldp-tx.h" |
23f53b99 | 48 | #include "networkd-manager.h" |
1e7a0e21 | 49 | #include "networkd-ndisc.h" |
e4a71bf3 | 50 | #include "networkd-neighbor.h" |
75156ccb | 51 | #include "networkd-nexthop.h" |
19d9a5ad | 52 | #include "networkd-queue.h" |
7465dd22 | 53 | #include "networkd-radv.h" |
3b6a3bde | 54 | #include "networkd-route.h" |
bce67bbe | 55 | #include "networkd-routing-policy-rule.h" |
0fa8ee6c | 56 | #include "networkd-setlink.h" |
19d9a5ad | 57 | #include "networkd-sriov.h" |
3b5a4fc6 | 58 | #include "networkd-state-file.h" |
19d9a5ad | 59 | #include "networkd-sysctl.h" |
cf1d700d TG |
60 | #include "set.h" |
61 | #include "socket-util.h" | |
15a5e950 | 62 | #include "stdio-util.h" |
8b43440b | 63 | #include "string-table.h" |
51517f9e | 64 | #include "strv.h" |
34658df2 | 65 | #include "tc.h" |
e4de7287 | 66 | #include "tmpfile-util.h" |
299ad32d | 67 | #include "udev-util.h" |
cf1d700d | 68 | #include "util.h" |
737f1405 | 69 | #include "vrf.h" |
fc2f9534 | 70 | |
3ca1fab7 | 71 | bool link_ipv4ll_enabled(Link *link) { |
b9d74c40 LP |
72 | assert(link); |
73 | ||
78c958f8 TG |
74 | if (link->flags & IFF_LOOPBACK) |
75 | return false; | |
76 | ||
77 | if (!link->network) | |
78 | return false; | |
79 | ||
500b96eb | 80 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
81 | return false; |
82 | ||
a1e35fca YW |
83 | if (link->hw_addr.length != ETH_ALEN) |
84 | return false; | |
85 | ||
86 | if (ether_addr_is_null(&link->hw_addr.ether)) | |
87 | return false; | |
88 | ||
71df0776 YW |
89 | /* ARPHRD_INFINIBAND seems to potentially support IPv4LL. |
90 | * But currently sd-ipv4ll and sd-ipv4acd only support ARPHRD_ETHER. */ | |
91 | if (link->iftype != ARPHRD_ETHER) | |
92 | return false; | |
93 | ||
94 | if (streq_ptr(link->kind, "vrf")) | |
a8f5bba6 JD |
95 | return false; |
96 | ||
f410d463 YW |
97 | /* L3 or L3S mode do not support ARP. */ |
98 | if (IN_SET(link_get_ipvlan_mode(link), NETDEV_IPVLAN_MODE_L3, NETDEV_IPVLAN_MODE_L3S)) | |
99 | return false; | |
100 | ||
f2bfcdb9 YW |
101 | if (link->network->bond) |
102 | return false; | |
103 | ||
3ca1fab7 | 104 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
8bc17bb3 SS |
105 | } |
106 | ||
5e0534f1 | 107 | bool link_ipv6_enabled(Link *link) { |
439689c6 SS |
108 | assert(link); |
109 | ||
110 | if (!socket_ipv6_is_supported()) | |
111 | return false; | |
112 | ||
b102cdca | 113 | if (link->network->bond) |
2b00a4e0 TY |
114 | return false; |
115 | ||
500b96eb | 116 | if (link->iftype == ARPHRD_CAN) |
af9ba57a YW |
117 | return false; |
118 | ||
4cef7fe3 | 119 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
adfeee49 YW |
120 | if (link_ipv6ll_enabled(link)) |
121 | return true; | |
122 | ||
123 | if (network_has_static_ipv6_configurations(link->network)) | |
124 | return true; | |
125 | ||
126 | return false; | |
439689c6 SS |
127 | } |
128 | ||
7191a57a YW |
129 | bool link_is_ready_to_configure(Link *link, bool allow_unmanaged) { |
130 | assert(link); | |
131 | ||
8e4b1b35 | 132 | if (!link->network) { |
7191a57a YW |
133 | if (!allow_unmanaged) |
134 | return false; | |
135 | ||
136 | return link_has_carrier(link); | |
137 | } | |
138 | ||
139 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) | |
140 | return false; | |
141 | ||
baa95d22 YW |
142 | if (!link->network->configure_without_carrier) { |
143 | if (link->set_flags_messages > 0) | |
144 | return false; | |
145 | ||
146 | if (!link_has_carrier(link)) | |
147 | return false; | |
148 | } | |
7191a57a | 149 | |
0fa8ee6c YW |
150 | if (link->set_link_messages > 0) |
151 | return false; | |
152 | ||
112a0972 YW |
153 | if (!link->activated) |
154 | return false; | |
112a0972 | 155 | |
7191a57a YW |
156 | return true; |
157 | } | |
158 | ||
15761549 YW |
159 | void link_ntp_settings_clear(Link *link) { |
160 | link->ntp = strv_free(link->ntp); | |
161 | } | |
162 | ||
163 | void link_dns_settings_clear(Link *link) { | |
f5fbe71d | 164 | if (link->n_dns != UINT_MAX) |
e77bd3fd YW |
165 | for (unsigned i = 0; i < link->n_dns; i++) |
166 | in_addr_full_free(link->dns[i]); | |
15761549 | 167 | link->dns = mfree(link->dns); |
f5fbe71d | 168 | link->n_dns = UINT_MAX; |
15761549 | 169 | |
6e4571f0 YW |
170 | link->search_domains = ordered_set_free(link->search_domains); |
171 | link->route_domains = ordered_set_free(link->route_domains); | |
15761549 YW |
172 | |
173 | link->dns_default_route = -1; | |
174 | link->llmnr = _RESOLVE_SUPPORT_INVALID; | |
175 | link->mdns = _RESOLVE_SUPPORT_INVALID; | |
176 | link->dnssec_mode = _DNSSEC_MODE_INVALID; | |
177 | link->dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID; | |
178 | ||
179 | link->dnssec_negative_trust_anchors = set_free_free(link->dnssec_negative_trust_anchors); | |
180 | } | |
181 | ||
1a6bb31f YW |
182 | static void link_free_engines(Link *link) { |
183 | if (!link) | |
184 | return; | |
185 | ||
186 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); | |
187 | link->dhcp_client = sd_dhcp_client_unref(link->dhcp_client); | |
188 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); | |
e49bad01 | 189 | link->dhcp4_6rd_tunnel_name = mfree(link->dhcp4_6rd_tunnel_name); |
1a6bb31f | 190 | |
35778343 | 191 | link->lldp_rx = sd_lldp_rx_unref(link->lldp_rx); |
c01b9b87 | 192 | link->lldp_tx = sd_lldp_tx_unref(link->lldp_tx); |
1a6bb31f YW |
193 | |
194 | ndisc_flush(link); | |
195 | ||
196 | link->ipv4ll = sd_ipv4ll_unref(link->ipv4ll); | |
197 | link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); | |
1633c457 | 198 | link->dhcp6_lease = sd_dhcp6_lease_unref(link->dhcp6_lease); |
1a6bb31f YW |
199 | link->ndisc = sd_ndisc_unref(link->ndisc); |
200 | link->radv = sd_radv_unref(link->radv); | |
201 | } | |
202 | ||
8301aa0b | 203 | static Link *link_free(Link *link) { |
8301aa0b | 204 | assert(link); |
f579559b | 205 | |
15761549 YW |
206 | link_ntp_settings_clear(link); |
207 | link_dns_settings_clear(link); | |
208 | ||
8eec0b9d | 209 | link->routes = set_free(link->routes); |
8eec0b9d | 210 | link->nexthops = set_free(link->nexthops); |
8eec0b9d | 211 | link->neighbors = set_free(link->neighbors); |
8eec0b9d | 212 | link->addresses = set_free(link->addresses); |
828a81a9 | 213 | link->traffic_control = set_free(link->traffic_control); |
adda1ed9 | 214 | |
a27588d4 | 215 | link->dhcp_pd_prefixes = set_free(link->dhcp_pd_prefixes); |
4b409e85 | 216 | |
1a6bb31f | 217 | link_free_engines(link); |
49699bac | 218 | |
c166a070 | 219 | free(link->ifname); |
572b21d9 | 220 | strv_free(link->alternative_names); |
ceac4078 | 221 | free(link->kind); |
8d968fdd | 222 | free(link->ssid); |
6706ce2f | 223 | free(link->previous_ssid); |
c643bda5 | 224 | free(link->driver); |
6cad256d | 225 | |
a34e58d4 YW |
226 | unlink_and_free(link->lease_file); |
227 | unlink_and_free(link->lldp_file); | |
228 | unlink_and_free(link->state_file); | |
c166a070 | 229 | |
51517f9e | 230 | sd_device_unref(link->sd_device); |
b5db00e5 | 231 | |
0d4ad91d | 232 | hashmap_free(link->bound_to_links); |
0d4ad91d AR |
233 | hashmap_free(link->bound_by_links); |
234 | ||
5f707e12 | 235 | set_free_with_destructor(link->slaves, link_unref); |
033295c1 | 236 | |
c9c908a6 YW |
237 | network_unref(link->network); |
238 | ||
6706ce2f YW |
239 | sd_event_source_disable_unref(link->carrier_lost_timer); |
240 | ||
8301aa0b | 241 | return mfree(link); |
14b746f7 TG |
242 | } |
243 | ||
8301aa0b | 244 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 245 | |
6eab614d | 246 | int link_get_by_index(Manager *m, int ifindex, Link **ret) { |
11a7f229 | 247 | Link *link; |
11a7f229 TG |
248 | |
249 | assert(m); | |
e856ed00 | 250 | assert(ifindex > 0); |
11a7f229 | 251 | |
6eab614d | 252 | link = hashmap_get(m->links_by_index, INT_TO_PTR(ifindex)); |
11a7f229 TG |
253 | if (!link) |
254 | return -ENODEV; | |
255 | ||
0b54c870 YW |
256 | if (ret) |
257 | *ret = link; | |
258 | return 0; | |
259 | } | |
260 | ||
261 | int link_get_by_name(Manager *m, const char *ifname, Link **ret) { | |
262 | Link *link; | |
263 | ||
264 | assert(m); | |
265 | assert(ifname); | |
11a7f229 | 266 | |
0b54c870 YW |
267 | link = hashmap_get(m->links_by_name, ifname); |
268 | if (!link) | |
269 | return -ENODEV; | |
270 | ||
271 | if (ret) | |
272 | *ret = link; | |
11a7f229 TG |
273 | return 0; |
274 | } | |
275 | ||
fe321d45 YW |
276 | int link_get_by_hw_addr(Manager *m, const struct hw_addr_data *hw_addr, Link **ret) { |
277 | Link *link; | |
278 | ||
279 | assert(m); | |
280 | assert(hw_addr); | |
281 | ||
282 | link = hashmap_get(m->links_by_hw_addr, hw_addr); | |
283 | if (!link) | |
284 | return -ENODEV; | |
285 | ||
286 | if (ret) | |
287 | *ret = link; | |
288 | return 0; | |
289 | } | |
290 | ||
81357285 YW |
291 | int link_get_master(Link *link, Link **ret) { |
292 | assert(link); | |
293 | assert(link->manager); | |
294 | assert(ret); | |
295 | ||
296 | if (link->master_ifindex <= 0 || link->master_ifindex == link->ifindex) | |
297 | return -ENODEV; | |
298 | ||
6eab614d | 299 | return link_get_by_index(link->manager, link->master_ifindex, ret); |
81357285 YW |
300 | } |
301 | ||
af9ba57a | 302 | void link_set_state(Link *link, LinkState state) { |
e331e246 TG |
303 | assert(link); |
304 | ||
305 | if (link->state == state) | |
306 | return; | |
307 | ||
0beb9542 YW |
308 | log_link_debug(link, "State changed: %s -> %s", |
309 | link_state_to_string(link->state), | |
310 | link_state_to_string(state)); | |
311 | ||
e331e246 TG |
312 | link->state = state; |
313 | ||
314 | link_send_changed(link, "AdministrativeState", NULL); | |
9092113d | 315 | link_dirty(link); |
e331e246 TG |
316 | } |
317 | ||
2a99eed0 | 318 | int link_stop_engines(Link *link, bool may_keep_dhcp) { |
111bb8f9 TG |
319 | int r = 0, k; |
320 | ||
321 | assert(link); | |
322 | assert(link->manager); | |
323 | assert(link->manager->event); | |
324 | ||
80060352 ZJS |
325 | bool keep_dhcp = may_keep_dhcp && |
326 | link->network && | |
76a86ffd | 327 | !link->network->dhcp_send_decline && /* IPv4 ACD for the DHCPv4 address is running. */ |
80060352 ZJS |
328 | (link->manager->restarting || |
329 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP_ON_STOP)); | |
330 | ||
84add3cd | 331 | if (!keep_dhcp) { |
111bb8f9 | 332 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 333 | if (k < 0) |
36c7d709 | 334 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
335 | } |
336 | ||
2a99eed0 YW |
337 | k = sd_dhcp_server_stop(link->dhcp_server); |
338 | if (k < 0) | |
339 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 server: %m"); | |
340 | ||
35778343 | 341 | k = sd_lldp_rx_stop(link->lldp_rx); |
9cc65242 | 342 | if (k < 0) |
c01b9b87 YW |
343 | r = log_link_warning_errno(link, k, "Could not stop LLDP Rx: %m"); |
344 | ||
345 | k = sd_lldp_tx_stop(link->lldp_tx); | |
346 | if (k < 0) | |
347 | r = log_link_warning_errno(link, k, "Could not stop LLDP Tx: %m"); | |
9cc65242 | 348 | |
84add3cd YW |
349 | k = sd_ipv4ll_stop(link->ipv4ll); |
350 | if (k < 0) | |
351 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); | |
dd43110f | 352 | |
76a86ffd | 353 | k = ipv4acd_stop(link); |
2488e4d9 YW |
354 | if (k < 0) |
355 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client: %m"); | |
051e77ca | 356 | |
84add3cd YW |
357 | k = sd_dhcp6_client_stop(link->dhcp6_client); |
358 | if (k < 0) | |
359 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); | |
4138fb2c | 360 | |
a27588d4 | 361 | k = dhcp_pd_remove(link, /* only_marked = */ false); |
2ffd6d73 YW |
362 | if (k < 0) |
363 | r = log_link_warning_errno(link, k, "Could not remove DHCPv6 PD addresses and routes: %m"); | |
1633c457 | 364 | |
84add3cd YW |
365 | k = sd_ndisc_stop(link->ndisc); |
366 | if (k < 0) | |
367 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); | |
4138fb2c | 368 | |
259c65f3 YW |
369 | ndisc_flush(link); |
370 | ||
84add3cd YW |
371 | k = sd_radv_stop(link->radv); |
372 | if (k < 0) | |
373 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
7465dd22 | 374 | |
111bb8f9 TG |
375 | return r; |
376 | } | |
377 | ||
b22d8a00 | 378 | void link_enter_failed(Link *link) { |
ef1ba606 | 379 | assert(link); |
f882c247 | 380 | |
370e9930 | 381 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
382 | return; |
383 | ||
6a7a4e4d | 384 | log_link_warning(link, "Failed"); |
449f7554 | 385 | |
e331e246 | 386 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 387 | |
2a99eed0 | 388 | (void) link_stop_engines(link, false); |
f882c247 TG |
389 | } |
390 | ||
6accfd31 DA |
391 | void link_check_ready(Link *link) { |
392 | Address *a; | |
6accfd31 DA |
393 | |
394 | assert(link); | |
395 | ||
5f58af25 YW |
396 | if (link->state == LINK_STATE_CONFIGURED) |
397 | return; | |
398 | ||
d19b9939 YW |
399 | if (link->state != LINK_STATE_CONFIGURING) |
400 | return (void) log_link_debug(link, "%s(): link is in %s state.", __func__, link_state_to_string(link->state)); | |
6accfd31 DA |
401 | |
402 | if (!link->network) | |
a7f07cbe | 403 | return (void) log_link_debug(link, "%s(): link is unmanaged.", __func__); |
6accfd31 | 404 | |
7558f9e7 YW |
405 | if (!link->tc_configured) |
406 | return (void) log_link_debug(link, "%s(): traffic controls are not configured.", __func__); | |
600b7898 | 407 | |
a7f07cbe YW |
408 | if (link->set_link_messages > 0) |
409 | return (void) log_link_debug(link, "%s(): link layer is configuring.", __func__); | |
410 | ||
411 | if (!link->activated) | |
412 | return (void) log_link_debug(link, "%s(): link is not activated.", __func__); | |
413 | ||
7558f9e7 YW |
414 | if (link->iftype == ARPHRD_CAN) { |
415 | /* let's shortcut things for CAN which doesn't need most of checks below. */ | |
416 | link_set_state(link, LINK_STATE_CONFIGURED); | |
417 | return; | |
418 | } | |
419 | ||
879377ca YW |
420 | if (!link->stacked_netdevs_created) |
421 | return (void) log_link_debug(link, "%s(): stacked netdevs are not created.", __func__); | |
422 | ||
76c5a0f2 | 423 | if (!link->static_addresses_configured) |
d19b9939 | 424 | return (void) log_link_debug(link, "%s(): static addresses are not configured.", __func__); |
6accfd31 | 425 | |
90e74a66 | 426 | SET_FOREACH(a, link->addresses) |
39373cb9 YW |
427 | if (!address_is_ready(a)) { |
428 | _cleanup_free_ char *str = NULL; | |
429 | ||
5380707a | 430 | (void) in_addr_prefix_to_string(a->family, &a->in_addr, a->prefixlen, &str); |
3b6a3bde | 431 | return (void) log_link_debug(link, "%s(): address %s is not ready.", __func__, strna(str)); |
39373cb9 | 432 | } |
6aa5773b | 433 | |
354bc760 YW |
434 | if (!link->static_address_labels_configured) |
435 | return (void) log_link_debug(link, "%s(): static address labels are not configured.", __func__); | |
436 | ||
e5b35bf6 YW |
437 | if (!link->static_bridge_fdb_configured) |
438 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
439 | ||
ff9e0783 YW |
440 | if (!link->static_bridge_mdb_configured) |
441 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
442 | ||
fdeba3f5 YW |
443 | if (!link->static_ipv6_proxy_ndp_configured) |
444 | return (void) log_link_debug(link, "%s(): static IPv6 proxy NDP addresses are not configured.", __func__); | |
445 | ||
40ca350e YW |
446 | if (!link->static_neighbors_configured) |
447 | return (void) log_link_debug(link, "%s(): static neighbors are not configured.", __func__); | |
448 | ||
d19b9939 YW |
449 | if (!link->static_nexthops_configured) |
450 | return (void) log_link_debug(link, "%s(): static nexthops are not configured.", __func__); | |
c16c7808 | 451 | |
76c5a0f2 YW |
452 | if (!link->static_routes_configured) |
453 | return (void) log_link_debug(link, "%s(): static routes are not configured.", __func__); | |
454 | ||
0e5ef6be | 455 | if (!link->static_routing_policy_rules_configured) |
d19b9939 | 456 | return (void) log_link_debug(link, "%s(): static routing policy rules are not configured.", __func__); |
6accfd31 | 457 | |
d19b9939 YW |
458 | if (!link->sr_iov_configured) |
459 | return (void) log_link_debug(link, "%s(): SR-IOV is not configured.", __func__); | |
518cd6b5 | 460 | |
4bcb8625 YW |
461 | /* IPv6LL is assigned after the link gains its carrier. */ |
462 | if (!link->network->configure_without_carrier && | |
463 | link_ipv6ll_enabled(link) && | |
464 | !in6_addr_is_set(&link->ipv6ll_address)) | |
465 | return (void) log_link_debug(link, "%s(): IPv6LL is not configured yet.", __func__); | |
466 | ||
3b6a3bde YW |
467 | bool has_dynamic_address = false; |
468 | SET_FOREACH(a, link->addresses) { | |
469 | if (address_is_marked(a)) | |
470 | continue; | |
471 | if (!address_exists(a)) | |
472 | continue; | |
473 | if (IN_SET(a->source, | |
d9098371 YW |
474 | NETWORK_CONFIG_SOURCE_IPV4LL, |
475 | NETWORK_CONFIG_SOURCE_DHCP4, | |
476 | NETWORK_CONFIG_SOURCE_DHCP6, | |
a27588d4 | 477 | NETWORK_CONFIG_SOURCE_DHCP_PD, |
d9098371 | 478 | NETWORK_CONFIG_SOURCE_NDISC)) { |
3b6a3bde | 479 | has_dynamic_address = true; |
4bcb8625 YW |
480 | break; |
481 | } | |
3b6a3bde | 482 | } |
50550722 | 483 | |
3b6a3bde | 484 | if ((link_ipv4ll_enabled(link) || link_dhcp4_enabled(link) || link_dhcp6_with_address_enabled(link) || |
a27588d4 | 485 | (link_dhcp_pd_is_enabled(link) && link->network->dhcp_pd_assign)) && !has_dynamic_address) |
4bcb8625 | 486 | /* When DHCP[46] or IPv4LL is enabled, at least one address is acquired by them. */ |
a27588d4 | 487 | return (void) log_link_debug(link, "%s(): DHCPv4, DHCPv6, DHCP-PD or IPv4LL is enabled but no dynamic address is assigned yet.", __func__); |
4bcb8625 YW |
488 | |
489 | /* Ignore NDisc when ConfigureWithoutCarrier= is enabled, as IPv6AcceptRA= is enabled by default. */ | |
3b6a3bde | 490 | if (link_ipv4ll_enabled(link) || link_dhcp4_enabled(link) || |
a27588d4 | 491 | link_dhcp6_enabled(link) || link_dhcp_pd_is_enabled(link) || |
3b6a3bde YW |
492 | (!link->network->configure_without_carrier && link_ipv6_accept_ra_enabled(link))) { |
493 | ||
494 | if (!link->ipv4ll_address_configured && !link->dhcp4_configured && | |
a27588d4 | 495 | !link->dhcp6_configured && !link->dhcp_pd_configured && !link->ndisc_configured) |
4bcb8625 YW |
496 | /* When DHCP[46], NDisc, or IPv4LL is enabled, at least one protocol must be finished. */ |
497 | return (void) log_link_debug(link, "%s(): dynamic addresses or routes are not configured.", __func__); | |
498 | ||
a27588d4 | 499 | log_link_debug(link, "%s(): IPv4LL:%s DHCPv4:%s DHCPv6:%s DHCP-PD:%s NDisc:%s", |
4bcb8625 | 500 | __func__, |
4bcb8625 | 501 | yes_no(link->ipv4ll_address_configured), |
3b6a3bde YW |
502 | yes_no(link->dhcp4_configured), |
503 | yes_no(link->dhcp6_configured), | |
a27588d4 | 504 | yes_no(link->dhcp_pd_configured), |
3b6a3bde | 505 | yes_no(link->ndisc_configured)); |
463797c1 | 506 | } |
6accfd31 | 507 | |
29836c16 | 508 | link_set_state(link, LINK_STATE_CONFIGURED); |
6accfd31 DA |
509 | } |
510 | ||
97108953 | 511 | static int link_request_static_configs(Link *link) { |
f882c247 TG |
512 | int r; |
513 | ||
514 | assert(link); | |
515 | assert(link->network); | |
f5be5601 | 516 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 517 | |
354bc760 | 518 | r = link_request_static_addresses(link); |
0e5ef6be YW |
519 | if (r < 0) |
520 | return r; | |
521 | ||
354bc760 | 522 | r = link_request_static_address_labels(link); |
f3ef324d YW |
523 | if (r < 0) |
524 | return r; | |
e4a71bf3 | 525 | |
e5b35bf6 YW |
526 | r = link_request_static_bridge_fdb(link); |
527 | if (r < 0) | |
528 | return r; | |
529 | ||
9a038aac YW |
530 | r = link_request_static_bridge_mdb(link); |
531 | if (r < 0) | |
532 | return r; | |
533 | ||
fdeba3f5 YW |
534 | r = link_request_static_ipv6_proxy_ndp_addresses(link); |
535 | if (r < 0) | |
536 | return r; | |
537 | ||
40ca350e | 538 | r = link_request_static_neighbors(link); |
682c65b0 YW |
539 | if (r < 0) |
540 | return r; | |
bd6379ec | 541 | |
76c5a0f2 | 542 | r = link_request_static_nexthops(link, false); |
fe2bc17c YW |
543 | if (r < 0) |
544 | return r; | |
f882c247 | 545 | |
76c5a0f2 YW |
546 | r = link_request_static_routes(link, false); |
547 | if (r < 0) | |
548 | return r; | |
549 | ||
550 | r = link_request_static_routing_policy_rules(link); | |
5ae0fb7f YW |
551 | if (r < 0) |
552 | return r; | |
d4cdbea5 | 553 | |
f882c247 TG |
554 | return 0; |
555 | } | |
556 | ||
1187fc33 YW |
557 | static int link_request_stacked_netdevs(Link *link) { |
558 | NetDev *netdev; | |
e16e4b3b DS |
559 | int r; |
560 | ||
561 | assert(link); | |
562 | ||
1187fc33 YW |
563 | link->stacked_netdevs_created = false; |
564 | link->stacked_netdevs_after_configured_created = false; | |
e16e4b3b | 565 | |
1187fc33 | 566 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
b14686ff | 567 | r = link_request_stacked_netdev(link, netdev); |
1187fc33 YW |
568 | if (r < 0) |
569 | return r; | |
570 | } | |
e16e4b3b | 571 | |
bb916f35 | 572 | if (link->create_stacked_netdev_messages == 0) { |
1187fc33 | 573 | link->stacked_netdevs_created = true; |
bb916f35 YW |
574 | link_check_ready(link); |
575 | } | |
1187fc33 YW |
576 | if (link->create_stacked_netdev_after_configured_messages == 0) |
577 | link->stacked_netdevs_after_configured_created = true; | |
e16e4b3b DS |
578 | |
579 | return 0; | |
580 | } | |
581 | ||
8566df79 | 582 | static int link_acquire_dynamic_ipv6_conf(Link *link) { |
e7ab854c TG |
583 | int r; |
584 | ||
585 | assert(link); | |
586 | ||
0f96a823 YW |
587 | r = radv_start(link); |
588 | if (r < 0) | |
589 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Advertisement engine: %m"); | |
7465dd22 | 590 | |
294f129b YW |
591 | r = ndisc_start(link); |
592 | if (r < 0) | |
593 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Discovery: %m"); | |
cd305af1 | 594 | |
294f129b YW |
595 | r = dhcp6_start(link); |
596 | if (r < 0) | |
597 | return log_link_warning_errno(link, r, "Failed to start DHCPv6 client: %m"); | |
cd305af1 | 598 | |
e7ab854c TG |
599 | return 0; |
600 | } | |
601 | ||
8566df79 | 602 | static int link_acquire_dynamic_ipv4_conf(Link *link) { |
ff254138 TG |
603 | int r; |
604 | ||
605 | assert(link); | |
ff254138 TG |
606 | assert(link->manager); |
607 | assert(link->manager->event); | |
608 | ||
0107b769 | 609 | if (link->dhcp_client) { |
294f129b | 610 | r = dhcp4_start(link); |
0107b769 | 611 | if (r < 0) |
294f129b | 612 | return log_link_warning_errno(link, r, "Failed to start DHCPv4 client: %m"); |
0107b769 | 613 | |
ccffa166 | 614 | log_link_debug(link, "Acquiring DHCPv4 lease."); |
5c1d3fc9 | 615 | |
ccffa166 | 616 | } else if (link->ipv4ll) { |
5c1d3fc9 | 617 | r = sd_ipv4ll_start(link->ipv4ll); |
6a7a4e4d LP |
618 | if (r < 0) |
619 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
ccffa166 YW |
620 | |
621 | log_link_debug(link, "Acquiring IPv4 link-local address."); | |
5c1d3fc9 UTL |
622 | } |
623 | ||
ab486ef4 YW |
624 | if (link->dhcp_server) { |
625 | r = sd_dhcp_server_start(link->dhcp_server); | |
626 | if (r < 0) | |
627 | return log_link_warning_errno(link, r, "Could not start DHCP server: %m"); | |
628 | } | |
629 | ||
76a86ffd YW |
630 | r = ipv4acd_start(link); |
631 | if (r < 0) | |
632 | return log_link_warning_errno(link, r, "Could not start IPv4 ACD client: %m"); | |
633 | ||
6fc25497 SS |
634 | return 0; |
635 | } | |
636 | ||
8566df79 | 637 | static int link_acquire_dynamic_conf(Link *link) { |
6fc25497 SS |
638 | int r; |
639 | ||
640 | assert(link); | |
0f96a823 | 641 | assert(link->network); |
6fc25497 | 642 | |
8566df79 | 643 | r = link_acquire_dynamic_ipv4_conf(link); |
6fc25497 SS |
644 | if (r < 0) |
645 | return r; | |
646 | ||
94876904 | 647 | if (in6_addr_is_set(&link->ipv6ll_address)) { |
8566df79 | 648 | r = link_acquire_dynamic_ipv6_conf(link); |
6fc25497 SS |
649 | if (r < 0) |
650 | return r; | |
651 | } | |
652 | ||
a27588d4 | 653 | if (!link_radv_enabled(link) || !link->network->dhcp_pd_announce) { |
0f96a823 YW |
654 | /* DHCPv6PD downstream does not require IPv6LL address. But may require RADV to be |
655 | * configured, and RADV may not be configured yet here. Only acquire subnet prefix when | |
656 | * RADV is disabled, or the announcement of the prefix is disabled. Otherwise, the | |
657 | * below will be called in radv_start(). */ | |
a27588d4 | 658 | r = dhcp_request_prefix_delegation(link); |
0f96a823 | 659 | if (r < 0) |
a27588d4 | 660 | return log_link_warning_errno(link, r, "Failed to request DHCP delegated subnet prefix: %m"); |
0f96a823 YW |
661 | } |
662 | ||
c01b9b87 YW |
663 | if (link->lldp_tx) { |
664 | r = sd_lldp_tx_start(link->lldp_tx); | |
665 | if (r < 0) | |
666 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
667 | } | |
8e1ad1ea | 668 | |
35778343 YW |
669 | if (link->lldp_rx) { |
670 | r = sd_lldp_rx_start(link->lldp_rx); | |
f8549910 YW |
671 | if (r < 0) |
672 | return log_link_warning_errno(link, r, "Failed to start LLDP client: %m"); | |
673 | } | |
674 | ||
ff254138 TG |
675 | return 0; |
676 | } | |
677 | ||
7657ec3e | 678 | int link_ipv6ll_gained(Link *link) { |
0c9ee5d5 | 679 | int r; |
deb2e523 | 680 | |
0c9ee5d5 | 681 | assert(link); |
deb2e523 | 682 | |
0c9ee5d5 | 683 | log_link_info(link, "Gained IPv6LL"); |
deb2e523 | 684 | |
7657ec3e YW |
685 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) |
686 | return 0; | |
0c9ee5d5 | 687 | |
7657ec3e YW |
688 | r = link_acquire_dynamic_ipv6_conf(link); |
689 | if (r < 0) | |
690 | return r; | |
0c9ee5d5 | 691 | |
7657ec3e | 692 | link_check_ready(link); |
0c9ee5d5 | 693 | return 0; |
deb2e523 TG |
694 | } |
695 | ||
112a0972 | 696 | int link_handle_bound_to_list(Link *link) { |
0d4ad91d AR |
697 | bool required_up = false; |
698 | bool link_is_up = false; | |
852a3916 | 699 | Link *l; |
0d4ad91d AR |
700 | |
701 | assert(link); | |
702 | ||
ad82f0c3 YW |
703 | /* If at least one interface in bound_to_links has carrier, then make this interface up. |
704 | * If all interfaces in bound_to_links do not, then make this interface down. */ | |
705 | ||
0d4ad91d AR |
706 | if (hashmap_isempty(link->bound_to_links)) |
707 | return 0; | |
708 | ||
709 | if (link->flags & IFF_UP) | |
710 | link_is_up = true; | |
711 | ||
852a3916 | 712 | HASHMAP_FOREACH(l, link->bound_to_links) |
0d4ad91d AR |
713 | if (link_has_carrier(l)) { |
714 | required_up = true; | |
715 | break; | |
716 | } | |
717 | ||
852a3916 | 718 | if (!required_up && link_is_up) |
68f52063 | 719 | return link_request_to_bring_up_or_down(link, /* up = */ false); |
852a3916 | 720 | if (required_up && !link_is_up) |
68f52063 | 721 | return link_request_to_bring_up_or_down(link, /* up = */ true); |
0d4ad91d AR |
722 | |
723 | return 0; | |
724 | } | |
725 | ||
726 | static int link_handle_bound_by_list(Link *link) { | |
0d4ad91d AR |
727 | Link *l; |
728 | int r; | |
729 | ||
730 | assert(link); | |
731 | ||
ad82f0c3 YW |
732 | /* Update up or down state of interfaces which depend on this interface's carrier state. */ |
733 | ||
0d4ad91d AR |
734 | if (hashmap_isempty(link->bound_by_links)) |
735 | return 0; | |
736 | ||
852a3916 | 737 | HASHMAP_FOREACH(l, link->bound_by_links) { |
0d4ad91d AR |
738 | r = link_handle_bound_to_list(l); |
739 | if (r < 0) | |
740 | return r; | |
741 | } | |
742 | ||
743 | return 0; | |
744 | } | |
745 | ||
746 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
747 | int r; | |
748 | ||
749 | assert(link); | |
750 | assert(carrier); | |
751 | ||
752 | if (link == carrier) | |
753 | return 0; | |
754 | ||
755 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
756 | return 0; | |
757 | ||
190b3b5c | 758 | r = hashmap_ensure_put(h, NULL, INT_TO_PTR(carrier->ifindex), carrier); |
0d4ad91d AR |
759 | if (r < 0) |
760 | return r; | |
761 | ||
9092113d YW |
762 | link_dirty(link); |
763 | ||
0d4ad91d AR |
764 | return 0; |
765 | } | |
766 | ||
767 | static int link_new_bound_by_list(Link *link) { | |
768 | Manager *m; | |
769 | Link *carrier; | |
0d4ad91d | 770 | int r; |
0d4ad91d AR |
771 | |
772 | assert(link); | |
773 | assert(link->manager); | |
774 | ||
775 | m = link->manager; | |
776 | ||
6eab614d | 777 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
0d4ad91d AR |
778 | if (!carrier->network) |
779 | continue; | |
780 | ||
781 | if (strv_isempty(carrier->network->bind_carrier)) | |
782 | continue; | |
783 | ||
191a3f16 | 784 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname)) { |
0d4ad91d AR |
785 | r = link_put_carrier(link, carrier, &link->bound_by_links); |
786 | if (r < 0) | |
787 | return r; | |
0d4ad91d AR |
788 | } |
789 | } | |
790 | ||
90e74a66 | 791 | HASHMAP_FOREACH(carrier, link->bound_by_links) { |
0d4ad91d AR |
792 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
793 | if (r < 0) | |
794 | return r; | |
0d4ad91d AR |
795 | } |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | static int link_new_bound_to_list(Link *link) { | |
801 | Manager *m; | |
802 | Link *carrier; | |
0d4ad91d | 803 | int r; |
0d4ad91d AR |
804 | |
805 | assert(link); | |
806 | assert(link->manager); | |
807 | ||
808 | if (!link->network) | |
809 | return 0; | |
810 | ||
811 | if (strv_isempty(link->network->bind_carrier)) | |
812 | return 0; | |
813 | ||
814 | m = link->manager; | |
815 | ||
6eab614d | 816 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
191a3f16 | 817 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname)) { |
0d4ad91d AR |
818 | r = link_put_carrier(link, carrier, &link->bound_to_links); |
819 | if (r < 0) | |
820 | return r; | |
0d4ad91d AR |
821 | } |
822 | } | |
823 | ||
852a3916 | 824 | HASHMAP_FOREACH(carrier, link->bound_to_links) { |
0d4ad91d AR |
825 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); |
826 | if (r < 0) | |
827 | return r; | |
0d4ad91d AR |
828 | } |
829 | ||
830 | return 0; | |
831 | } | |
832 | ||
0d4ad91d | 833 | static void link_free_bound_to_list(Link *link) { |
9092113d | 834 | bool updated = false; |
0d4ad91d | 835 | Link *bound_to; |
0d4ad91d | 836 | |
9092113d YW |
837 | assert(link); |
838 | ||
839 | while ((bound_to = hashmap_steal_first(link->bound_to_links))) { | |
840 | updated = true; | |
0d4ad91d AR |
841 | |
842 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 843 | link_dirty(bound_to); |
0d4ad91d AR |
844 | } |
845 | ||
9092113d YW |
846 | if (updated) |
847 | link_dirty(link); | |
0d4ad91d AR |
848 | } |
849 | ||
850 | static void link_free_bound_by_list(Link *link) { | |
9092113d | 851 | bool updated = false; |
0d4ad91d | 852 | Link *bound_by; |
0d4ad91d | 853 | |
9092113d YW |
854 | assert(link); |
855 | ||
856 | while ((bound_by = hashmap_steal_first(link->bound_by_links))) { | |
857 | updated = true; | |
0d4ad91d AR |
858 | |
859 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 860 | link_dirty(bound_by); |
0d4ad91d AR |
861 | link_handle_bound_to_list(bound_by); |
862 | } | |
863 | } | |
864 | ||
9092113d YW |
865 | if (updated) |
866 | link_dirty(link); | |
0d4ad91d AR |
867 | } |
868 | ||
81357285 | 869 | static int link_append_to_master(Link *link) { |
5f707e12 YW |
870 | Link *master; |
871 | int r; | |
872 | ||
873 | assert(link); | |
5f707e12 | 874 | |
81357285 YW |
875 | /* - The link may have no master. |
876 | * - RTM_NEWLINK message about master interface may not be received yet. */ | |
877 | if (link_get_master(link, &master) < 0) | |
878 | return 0; | |
5f707e12 | 879 | |
de7fef4b | 880 | r = set_ensure_put(&master->slaves, NULL, link); |
38288f0b | 881 | if (r <= 0) |
5f707e12 YW |
882 | return r; |
883 | ||
884 | link_ref(link); | |
885 | return 0; | |
886 | } | |
887 | ||
81357285 | 888 | static void link_drop_from_master(Link *link) { |
5f707e12 YW |
889 | Link *master; |
890 | ||
891 | assert(link); | |
892 | ||
81357285 | 893 | if (!link->manager) |
5f707e12 YW |
894 | return; |
895 | ||
81357285 | 896 | if (link_get_master(link, &master) < 0) |
5f707e12 YW |
897 | return; |
898 | ||
899 | link_unref(set_remove(master->slaves, link)); | |
900 | } | |
901 | ||
56001f02 YW |
902 | static void link_drop_requests(Link *link) { |
903 | Request *req; | |
904 | ||
905 | assert(link); | |
906 | assert(link->manager); | |
907 | ||
908 | ORDERED_SET_FOREACH(req, link->manager->request_queue) | |
909 | if (req->link == link) | |
910 | request_drop(req); | |
911 | } | |
912 | ||
cc2d7efc | 913 | static Link *link_drop(Link *link) { |
0b54c870 YW |
914 | char **n; |
915 | ||
63130eb3 | 916 | if (!link) |
cc2d7efc | 917 | return NULL; |
0d4ad91d | 918 | |
63130eb3 YW |
919 | assert(link->manager); |
920 | ||
0d4ad91d AR |
921 | link_set_state(link, LINK_STATE_LINGER); |
922 | ||
63130eb3 YW |
923 | /* Drop all references from other links and manager. Note that async netlink calls may have |
924 | * references to the link, and they will be dropped when we receive replies. */ | |
925 | ||
56001f02 YW |
926 | link_drop_requests(link); |
927 | ||
bb193d2d YW |
928 | link_free_bound_to_list(link); |
929 | link_free_bound_by_list(link); | |
0d4ad91d | 930 | |
81357285 | 931 | link_drop_from_master(link); |
5f707e12 | 932 | |
4c78dc17 YW |
933 | if (link->state_file) |
934 | (void) unlink(link->state_file); | |
935 | ||
63130eb3 YW |
936 | link_clean(link); |
937 | ||
0b54c870 YW |
938 | STRV_FOREACH(n, link->alternative_names) |
939 | hashmap_remove(link->manager->links_by_name, *n); | |
0b54c870 YW |
940 | hashmap_remove(link->manager->links_by_name, link->ifname); |
941 | ||
fe321d45 | 942 | /* bonding master and its slaves have the same hardware address. */ |
e74f1d07 | 943 | hashmap_remove_value(link->manager->links_by_hw_addr, &link->hw_addr, link); |
fe321d45 | 944 | |
63130eb3 | 945 | /* The following must be called at last. */ |
6eab614d | 946 | assert_se(hashmap_remove(link->manager->links_by_index, INT_TO_PTR(link->ifindex)) == link); |
cc2d7efc | 947 | return link_unref(link); |
0d4ad91d AR |
948 | } |
949 | ||
5e5b137a | 950 | static int link_drop_foreign_config(Link *link) { |
0b81225e YW |
951 | int k, r; |
952 | ||
953 | assert(link); | |
954 | assert(link->manager); | |
5e5b137a | 955 | |
5e3bb5da YW |
956 | /* Drop foreign config, but ignore unmanaged, loopback, or critical interfaces. We do not want |
957 | * to remove loopback address or addresses used for root NFS. */ | |
958 | ||
959 | if (IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) | |
960 | return 0; | |
961 | if (FLAGS_SET(link->flags, IFF_LOOPBACK)) | |
962 | return 0; | |
963 | if (link->network->keep_configuration == KEEP_CONFIGURATION_YES) | |
964 | return 0; | |
965 | ||
e36d601c | 966 | r = link_drop_foreign_routes(link); |
5e5b137a | 967 | |
e36d601c | 968 | k = link_drop_foreign_nexthops(link); |
0b81225e YW |
969 | if (k < 0 && r >= 0) |
970 | r = k; | |
971 | ||
e36d601c | 972 | k = link_drop_foreign_addresses(link); |
0b81225e YW |
973 | if (k < 0 && r >= 0) |
974 | r = k; | |
d1bdafd2 | 975 | |
e36d601c | 976 | k = link_drop_foreign_neighbors(link); |
25b82b6e YW |
977 | if (k < 0 && r >= 0) |
978 | r = k; | |
979 | ||
0b81225e YW |
980 | k = manager_drop_foreign_routing_policy_rules(link->manager); |
981 | if (k < 0 && r >= 0) | |
982 | r = k; | |
983 | ||
984 | return r; | |
5e5b137a TG |
985 | } |
986 | ||
a0e99a37 | 987 | static int link_drop_managed_config(Link *link) { |
0b81225e YW |
988 | int k, r; |
989 | ||
990 | assert(link); | |
991 | assert(link->manager); | |
3104883d | 992 | |
a0e99a37 | 993 | r = link_drop_managed_routes(link); |
3104883d | 994 | |
a0e99a37 | 995 | k = link_drop_managed_nexthops(link); |
0b81225e YW |
996 | if (k < 0 && r >= 0) |
997 | r = k; | |
d1bdafd2 | 998 | |
a0e99a37 | 999 | k = link_drop_managed_addresses(link); |
0b81225e YW |
1000 | if (k < 0 && r >= 0) |
1001 | r = k; | |
1002 | ||
a0e99a37 | 1003 | k = link_drop_managed_neighbors(link); |
25b82b6e YW |
1004 | if (k < 0 && r >= 0) |
1005 | r = k; | |
1006 | ||
a0e99a37 | 1007 | k = link_drop_managed_routing_policy_rules(link); |
0b81225e YW |
1008 | if (k < 0 && r >= 0) |
1009 | r = k; | |
3104883d | 1010 | |
0b81225e | 1011 | return r; |
3104883d SS |
1012 | } |
1013 | ||
b4564f4e YW |
1014 | static void link_foreignize_config(Link *link) { |
1015 | assert(link); | |
1016 | assert(link->manager); | |
1017 | ||
1018 | link_foreignize_routes(link); | |
1019 | link_foreignize_nexthops(link); | |
1020 | link_foreignize_addresses(link); | |
1021 | link_foreignize_neighbors(link); | |
1022 | link_foreignize_routing_policy_rules(link); | |
1023 | } | |
1024 | ||
c3b94251 | 1025 | static int link_configure(Link *link) { |
4ecdcb07 YW |
1026 | int r; |
1027 | ||
ef1ba606 | 1028 | assert(link); |
b22d8a00 | 1029 | assert(link->network); |
bd08ce56 | 1030 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 1031 | |
1187fc33 YW |
1032 | link_set_state(link, LINK_STATE_CONFIGURING); |
1033 | ||
3cf58ef3 YW |
1034 | r = link_new_bound_to_list(link); |
1035 | if (r < 0) | |
1036 | return r; | |
1037 | ||
1dec9d81 | 1038 | r = link_request_traffic_control(link); |
4ecdcb07 YW |
1039 | if (r < 0) |
1040 | return r; | |
1041 | ||
7558f9e7 YW |
1042 | if (link->iftype == ARPHRD_CAN) { |
1043 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
1044 | r = link_request_to_set_can(link); | |
1045 | if (r < 0) | |
1046 | return r; | |
1047 | ||
1048 | return link_request_to_activate(link); | |
1049 | } | |
1050 | ||
518cd6b5 SS |
1051 | r = link_configure_sr_iov(link); |
1052 | if (r < 0) | |
1053 | return r; | |
1054 | ||
5e0534f1 | 1055 | r = link_set_sysctl(link); |
b69c3180 SS |
1056 | if (r < 0) |
1057 | return r; | |
8749cbcd | 1058 | |
d05c332c | 1059 | r = link_request_to_set_mac(link, /* allow_retry = */ true); |
e16e4b3b DS |
1060 | if (r < 0) |
1061 | return r; | |
1062 | ||
72e65e6f YW |
1063 | r = link_request_to_set_ipoib(link); |
1064 | if (r < 0) | |
1065 | return r; | |
1066 | ||
1187fc33 | 1067 | r = link_request_to_set_flags(link); |
e16e4b3b DS |
1068 | if (r < 0) |
1069 | return r; | |
1070 | ||
1187fc33 | 1071 | r = link_request_to_set_group(link); |
99d2baa2 SS |
1072 | if (r < 0) |
1073 | return r; | |
1074 | ||
1187fc33 YW |
1075 | r = link_configure_mtu(link); |
1076 | if (r < 0) | |
1077 | return r; | |
1078 | ||
1079 | r = link_request_to_set_addrgen_mode(link); | |
1080 | if (r < 0) | |
1081 | return r; | |
1082 | ||
1083 | r = link_request_to_set_master(link); | |
1084 | if (r < 0) | |
1085 | return r; | |
1086 | ||
1087 | r = link_request_stacked_netdevs(link); | |
1088 | if (r < 0) | |
1089 | return r; | |
1090 | ||
1091 | r = link_request_to_set_bond(link); | |
1092 | if (r < 0) | |
1093 | return r; | |
1094 | ||
1095 | r = link_request_to_set_bridge(link); | |
1096 | if (r < 0) | |
1097 | return r; | |
1098 | ||
1099 | r = link_request_to_set_bridge_vlan(link); | |
1100 | if (r < 0) | |
1101 | return r; | |
1102 | ||
1103 | r = link_request_to_activate(link); | |
89fe6535 SS |
1104 | if (r < 0) |
1105 | return r; | |
1106 | ||
2ffd6d73 YW |
1107 | r = ipv4ll_configure(link); |
1108 | if (r < 0) | |
1109 | return r; | |
64b21ece | 1110 | |
ccffa166 | 1111 | r = link_request_dhcp4_client(link); |
2ffd6d73 YW |
1112 | if (r < 0) |
1113 | return r; | |
eb34d4af | 1114 | |
ccffa166 | 1115 | r = link_request_dhcp6_client(link); |
2ffd6d73 YW |
1116 | if (r < 0) |
1117 | return r; | |
f5a8c43f | 1118 | |
ba4c7184 | 1119 | r = link_request_ndisc(link); |
2ffd6d73 YW |
1120 | if (r < 0) |
1121 | return r; | |
4138fb2c | 1122 | |
1d28a3cf YW |
1123 | r = link_request_dhcp_server(link); |
1124 | if (r < 0) | |
1125 | return r; | |
1126 | ||
a254fab2 | 1127 | r = link_request_radv(link); |
086b8853 YW |
1128 | if (r < 0) |
1129 | return r; | |
7465dd22 | 1130 | |
2ffd6d73 YW |
1131 | r = link_lldp_rx_configure(link); |
1132 | if (r < 0) | |
1133 | return r; | |
ce43e484 | 1134 | |
c01b9b87 YW |
1135 | r = link_lldp_tx_configure(link); |
1136 | if (r < 0) | |
1137 | return r; | |
1138 | ||
5e3bb5da YW |
1139 | r = link_drop_foreign_config(link); |
1140 | if (r < 0) | |
1141 | return r; | |
4c649652 | 1142 | |
1187fc33 YW |
1143 | r = link_request_static_configs(link); |
1144 | if (r < 0) | |
1145 | return r; | |
1146 | ||
1147 | if (!link_has_carrier(link)) | |
1148 | return 0; | |
1149 | ||
1150 | return link_acquire_dynamic_conf(link); | |
505f8da7 TG |
1151 | } |
1152 | ||
170e88c8 YW |
1153 | static int link_get_network(Link *link, Network **ret) { |
1154 | Network *network; | |
1a3caa49 | 1155 | int r; |
170e88c8 YW |
1156 | |
1157 | assert(link); | |
1158 | assert(link->manager); | |
1159 | assert(ret); | |
1160 | ||
1161 | ORDERED_HASHMAP_FOREACH(network, link->manager->networks) { | |
1162 | bool warn = false; | |
1163 | ||
1a3caa49 | 1164 | r = net_match_config( |
170e88c8 YW |
1165 | &network->match, |
1166 | link->sd_device, | |
52135071 YW |
1167 | &link->hw_addr, |
1168 | &link->permanent_hw_addr, | |
170e88c8 YW |
1169 | link->driver, |
1170 | link->iftype, | |
1171 | link->ifname, | |
1172 | link->alternative_names, | |
1173 | link->wlan_iftype, | |
1174 | link->ssid, | |
1a3caa49 YW |
1175 | &link->bssid); |
1176 | if (r < 0) | |
1177 | return r; | |
1178 | if (r == 0) | |
170e88c8 YW |
1179 | continue; |
1180 | ||
1181 | if (network->match.ifname && link->sd_device) { | |
1182 | uint8_t name_assign_type = NET_NAME_UNKNOWN; | |
1183 | const char *attr; | |
1184 | ||
1185 | if (sd_device_get_sysattr_value(link->sd_device, "name_assign_type", &attr) >= 0) | |
1186 | (void) safe_atou8(attr, &name_assign_type); | |
1187 | ||
1188 | warn = name_assign_type == NET_NAME_ENUM; | |
1189 | } | |
1190 | ||
1191 | log_link_full(link, warn ? LOG_WARNING : LOG_DEBUG, | |
1192 | "found matching network '%s'%s.", | |
1193 | network->filename, | |
1194 | warn ? ", based on potentially unpredictable interface name" : ""); | |
1195 | ||
1196 | if (network->unmanaged) | |
1197 | return -ENOENT; | |
1198 | ||
1199 | *ret = network; | |
1200 | return 0; | |
1201 | } | |
1202 | ||
1203 | return -ENOENT; | |
1204 | } | |
1205 | ||
7f80fa12 | 1206 | static int link_reconfigure_impl(Link *link, bool force) { |
cb71e9c6 | 1207 | Network *network = NULL; |
ad932b15 YW |
1208 | int r; |
1209 | ||
5a1860f7 | 1210 | assert(link); |
572b21d9 | 1211 | |
fb961119 YW |
1212 | if (!IN_SET(link->state, LINK_STATE_INITIALIZED, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED, LINK_STATE_UNMANAGED)) |
1213 | return 0; | |
1214 | ||
170e88c8 | 1215 | r = link_get_network(link, &network); |
cb71e9c6 | 1216 | if (r < 0 && r != -ENOENT) |
ad932b15 YW |
1217 | return r; |
1218 | ||
fb961119 YW |
1219 | if (link->state != LINK_STATE_UNMANAGED && !network) |
1220 | /* If link is in initialized state, then link->network is also NULL. */ | |
1221 | force = true; | |
1222 | ||
99b8517c | 1223 | if (link->network == network && !force) |
ad932b15 YW |
1224 | return 0; |
1225 | ||
fb961119 YW |
1226 | if (network) { |
1227 | if (link->state == LINK_STATE_INITIALIZED) | |
1228 | log_link_info(link, "Configuring with %s.", network->filename); | |
1229 | else | |
1230 | log_link_info(link, "Reconfiguring with %s.", network->filename); | |
1231 | } else | |
1232 | log_link_full(link, link->state == LINK_STATE_INITIALIZED ? LOG_DEBUG : LOG_INFO, | |
1233 | "Unmanaging interface."); | |
ad932b15 YW |
1234 | |
1235 | /* Dropping old .network file */ | |
2a99eed0 | 1236 | r = link_stop_engines(link, false); |
572b21d9 | 1237 | if (r < 0) |
ad932b15 | 1238 | return r; |
ad932b15 | 1239 | |
19d9a5ad YW |
1240 | link_drop_requests(link); |
1241 | ||
81db4f3d | 1242 | if (network && !force && network->keep_configuration != KEEP_CONFIGURATION_YES) |
b4564f4e YW |
1243 | /* When a new/updated .network file is assigned, first make all configs (addresses, |
1244 | * routes, and so on) foreign, and then drop unnecessary configs later by | |
81db4f3d YW |
1245 | * link_drop_foreign_config() in link_configure(). |
1246 | * Note, when KeepConfiguration=yes, link_drop_foreign_config() does nothing. Hence, | |
1247 | * here we need to drop the configs such as addresses, routes, and so on configured by | |
1248 | * the previously assigned .network file. */ | |
b4564f4e YW |
1249 | link_foreignize_config(link); |
1250 | else { | |
a0e99a37 YW |
1251 | /* Remove all managed configs. Note, foreign configs are removed in later by |
1252 | * link_configure() -> link_drop_foreign_config() if the link is managed by us. */ | |
1253 | r = link_drop_managed_config(link); | |
b4564f4e YW |
1254 | if (r < 0) |
1255 | return r; | |
1256 | } | |
ad932b15 | 1257 | |
3cf58ef3 YW |
1258 | /* The bound_to map depends on .network file, hence it needs to be freed. But, do not free the |
1259 | * bound_by map. Otherwise, if a link enters unmanaged state below, then its carrier state will | |
1260 | * not propagated to other interfaces anymore. Moreover, it is not necessary to recreate the | |
1261 | * map here, as it depends on .network files assigned to other links. */ | |
1262 | link_free_bound_to_list(link); | |
1263 | ||
ad932b15 YW |
1264 | link_free_engines(link); |
1265 | link->network = network_unref(link->network); | |
1266 | ||
cb71e9c6 YW |
1267 | if (!network) { |
1268 | link_set_state(link, LINK_STATE_UNMANAGED); | |
1269 | return 0; | |
1270 | } | |
1271 | ||
ad932b15 | 1272 | /* Then, apply new .network file */ |
9092113d | 1273 | link->network = network_ref(network); |
b156a95d | 1274 | link_update_operstate(link, true); |
9092113d | 1275 | link_dirty(link); |
ad932b15 | 1276 | |
ad932b15 | 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 | ||
96f5f9ef | 1287 | static int link_reconfigure_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, bool force) { |
572b21d9 YW |
1288 | int r; |
1289 | ||
d09a179e YW |
1290 | assert(link); |
1291 | ||
5a1860f7 YW |
1292 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to update link state"); |
1293 | if (r <= 0) | |
1294 | return r; | |
1295 | ||
7f80fa12 | 1296 | r = link_reconfigure_impl(link, force); |
d09a179e | 1297 | if (r < 0) { |
572b21d9 | 1298 | link_enter_failed(link); |
d09a179e YW |
1299 | return 0; |
1300 | } | |
572b21d9 | 1301 | |
d09a179e | 1302 | return r; |
572b21d9 YW |
1303 | } |
1304 | ||
5a1860f7 | 1305 | static int link_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
96f5f9ef | 1306 | return link_reconfigure_handler_internal(rtnl, m, link, /* force = */ false); |
5a1860f7 | 1307 | } |
572b21d9 | 1308 | |
5a1860f7 | 1309 | static int link_force_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
96f5f9ef | 1310 | return link_reconfigure_handler_internal(rtnl, m, link, /* force = */ true); |
572b21d9 YW |
1311 | } |
1312 | ||
d09a179e | 1313 | static int link_reconfigure_after_sleep_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
572b21d9 YW |
1314 | int r; |
1315 | ||
d09a179e YW |
1316 | assert(link); |
1317 | ||
96f5f9ef | 1318 | r = link_reconfigure_handler_internal(rtnl, m, link, /* force = */ false); |
d09a179e YW |
1319 | if (r != 0) |
1320 | return r; | |
1321 | ||
1322 | /* r == 0 means an error occurs, the link is unmanaged, or the matching network file is unchanged. */ | |
1323 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) | |
1324 | return 0; | |
1325 | ||
1326 | /* re-request static configs, and restart engines. */ | |
1327 | r = link_stop_engines(link, false); | |
1328 | if (r < 0) { | |
1329 | link_enter_failed(link); | |
1330 | return 0; | |
1331 | } | |
1332 | ||
1333 | r = link_acquire_dynamic_conf(link); | |
1334 | if (r < 0) { | |
1335 | link_enter_failed(link); | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | r = link_request_static_configs(link); | |
1340 | if (r < 0) { | |
1341 | link_enter_failed(link); | |
1342 | return 0; | |
1343 | } | |
1344 | ||
1345 | return 0; | |
1346 | } | |
1347 | ||
1348 | static int link_reconfigure_internal(Link *link, link_netlink_message_handler_t callback) { | |
1349 | int r; | |
1350 | ||
1351 | assert(link); | |
1352 | assert(callback); | |
1353 | ||
8bceafa7 | 1354 | /* When link in pending or initialized state, then link_configure() will be called. To prevent |
f8dd4077 ZJS |
1355 | * the function from being called multiple times simultaneously, refuse to reconfigure the |
1356 | * interface in these cases. */ | |
8bceafa7 | 1357 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED, LINK_STATE_LINGER)) |
f8dd4077 | 1358 | return 0; /* 0 means no-op. */ |
2c0d7ed3 | 1359 | |
d09a179e | 1360 | r = link_call_getlink(link, callback); |
572b21d9 YW |
1361 | if (r < 0) |
1362 | return r; | |
1363 | ||
8bceafa7 | 1364 | return 1; /* 1 means the interface will be reconfigured. */ |
572b21d9 YW |
1365 | } |
1366 | ||
d09a179e YW |
1367 | int link_reconfigure(Link *link, bool force) { |
1368 | return link_reconfigure_internal(link, force ? link_force_reconfigure_handler : link_reconfigure_handler); | |
1369 | } | |
1370 | ||
1371 | int link_reconfigure_after_sleep(Link *link) { | |
1372 | return link_reconfigure_internal(link, link_reconfigure_after_sleep_handler); | |
1373 | } | |
1374 | ||
e6bf7774 | 1375 | static int link_initialized_and_synced(Link *link) { |
505f8da7 TG |
1376 | int r; |
1377 | ||
1378 | assert(link); | |
505f8da7 TG |
1379 | assert(link->manager); |
1380 | ||
faa2e64f YW |
1381 | if (link->manager->test_mode) { |
1382 | log_link_debug(link, "Running in test mode, refusing to enter initialized state."); | |
1383 | link_set_state(link, LINK_STATE_UNMANAGED); | |
1384 | return 0; | |
1385 | } | |
1386 | ||
fb961119 | 1387 | /* This may get called either from the asynchronous netlink callback, |
0d411b7f | 1388 | * or directly from link_check_initialized() if running in a container. */ |
bd08ce56 | 1389 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) |
4232cf04 | 1390 | return 0; |
505f8da7 | 1391 | |
6a7a4e4d | 1392 | log_link_debug(link, "Link state is up-to-date"); |
bd08ce56 | 1393 | link_set_state(link, LINK_STATE_INITIALIZED); |
505f8da7 | 1394 | |
0d4ad91d AR |
1395 | r = link_new_bound_by_list(link); |
1396 | if (r < 0) | |
1397 | return r; | |
1398 | ||
1399 | r = link_handle_bound_by_list(link); | |
1400 | if (r < 0) | |
1401 | return r; | |
1402 | ||
fb961119 | 1403 | return link_reconfigure_impl(link, /* force = */ false); |
505f8da7 TG |
1404 | } |
1405 | ||
302a796f | 1406 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4ff296b0 YW |
1407 | int r; |
1408 | ||
5a1860f7 YW |
1409 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to wait for the interface to be initialized"); |
1410 | if (r <= 0) | |
0b54c870 | 1411 | return r; |
572b21d9 | 1412 | |
4ff296b0 YW |
1413 | r = link_initialized_and_synced(link); |
1414 | if (r < 0) | |
1415 | link_enter_failed(link); | |
5a1860f7 YW |
1416 | |
1417 | return 0; | |
e6bf7774 YW |
1418 | } |
1419 | ||
3be9d62a | 1420 | static int link_initialized(Link *link, sd_device *device) { |
4f561e8e | 1421 | assert(link); |
4f561e8e TG |
1422 | assert(device); |
1423 | ||
160203e9 YW |
1424 | /* Always replace with the new sd_device object. As the sysname (and possibly other properties |
1425 | * or sysattrs) may be outdated. */ | |
1426 | sd_device_ref(device); | |
1427 | sd_device_unref(link->sd_device); | |
1428 | link->sd_device = device; | |
4f561e8e | 1429 | |
160203e9 YW |
1430 | /* Do not ignore unamanaged state case here. If an interface is renamed after being once |
1431 | * configured, and the corresponding .network file has Name= in [Match] section, then the | |
1432 | * interface may be already in unmanaged state. See #20657. */ | |
1433 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_UNMANAGED)) | |
679b3605 TG |
1434 | return 0; |
1435 | ||
79008bdd | 1436 | log_link_debug(link, "udev initialized link"); |
bd08ce56 | 1437 | link_set_state(link, LINK_STATE_INITIALIZED); |
4f561e8e | 1438 | |
3c9b8860 TG |
1439 | /* udev has initialized the link, but we don't know if we have yet |
1440 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
1441 | * when it returns we know that the pending NEWLINKs have already been | |
1442 | * processed and that we are up-to-date */ | |
4f561e8e | 1443 | |
5a1860f7 | 1444 | return link_call_getlink(link, link_initialized_handler); |
cc2d7efc YW |
1445 | } |
1446 | ||
0d411b7f | 1447 | static int link_check_initialized(Link *link) { |
51517f9e | 1448 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
5a937ea2 | 1449 | int r; |
505f8da7 | 1450 | |
0d411b7f | 1451 | assert(link); |
505f8da7 | 1452 | |
82f52245 | 1453 | if (!udev_available()) |
0d411b7f | 1454 | return link_initialized_and_synced(link); |
852a3916 YW |
1455 | |
1456 | /* udev should be around */ | |
0ac655a6 | 1457 | r = sd_device_new_from_ifindex(&device, link->ifindex); |
852a3916 YW |
1458 | if (r < 0) { |
1459 | log_link_debug_errno(link, r, "Could not find device, waiting for device initialization: %m"); | |
1460 | return 0; | |
1461 | } | |
1462 | ||
1463 | r = sd_device_get_is_initialized(device); | |
0d411b7f YW |
1464 | if (r < 0) |
1465 | return log_link_warning_errno(link, r, "Could not determine whether the device is initialized: %m"); | |
852a3916 YW |
1466 | if (r == 0) { |
1467 | /* not yet ready */ | |
1468 | log_link_debug(link, "link pending udev initialization..."); | |
1469 | return 0; | |
1470 | } | |
1471 | ||
1472 | r = device_is_renaming(device); | |
0d411b7f YW |
1473 | if (r < 0) |
1474 | return log_link_warning_errno(link, r, "Failed to determine the device is being renamed: %m"); | |
852a3916 YW |
1475 | if (r > 0) { |
1476 | log_link_debug(link, "Interface is being renamed, pending initialization."); | |
1477 | return 0; | |
4f561e8e | 1478 | } |
505f8da7 | 1479 | |
0d411b7f | 1480 | return link_initialized(link, device); |
a748b692 TG |
1481 | } |
1482 | ||
3be9d62a YW |
1483 | int manager_udev_process_link(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
1484 | sd_device_action_t action; | |
1485 | Manager *m = userdata; | |
1486 | Link *link = NULL; | |
1487 | int r, ifindex; | |
1488 | ||
1489 | assert(m); | |
1490 | assert(device); | |
1491 | ||
1492 | r = sd_device_get_action(device, &action); | |
1493 | if (r < 0) { | |
1494 | log_device_debug_errno(device, r, "Failed to get udev action, ignoring device: %m"); | |
1495 | return 0; | |
1496 | } | |
1497 | ||
1498 | /* Ignore the "remove" uevent — let's remove a device only if rtnetlink says so. All other uevents | |
1499 | * are "positive" events in some form, i.e. inform us about a changed or new network interface, that | |
1500 | * still exists — and we are interested in that. */ | |
1501 | if (action == SD_DEVICE_REMOVE) | |
1502 | return 0; | |
1503 | ||
1504 | r = sd_device_get_ifindex(device, &ifindex); | |
1505 | if (r < 0) { | |
1506 | log_device_debug_errno(device, r, "Ignoring udev %s event for device without ifindex or with invalid ifindex: %m", | |
1507 | device_action_to_string(action)); | |
1508 | return 0; | |
1509 | } | |
1510 | ||
1511 | r = device_is_renaming(device); | |
1512 | if (r < 0) { | |
4b9a8c2b | 1513 | log_device_debug_errno(device, r, "Failed to determine the device is renamed or not, ignoring '%s' uevent: %m", |
3be9d62a YW |
1514 | device_action_to_string(action)); |
1515 | return 0; | |
1516 | } | |
1517 | if (r > 0) { | |
1518 | log_device_debug(device, "Interface is under renaming, wait for the interface to be renamed."); | |
1519 | return 0; | |
1520 | } | |
1521 | ||
6eab614d | 1522 | r = link_get_by_index(m, ifindex, &link); |
3be9d62a | 1523 | if (r < 0) { |
4b9a8c2b | 1524 | log_device_debug_errno(device, r, "Failed to get link from ifindex %i, ignoring: %m", ifindex); |
3be9d62a YW |
1525 | return 0; |
1526 | } | |
1527 | ||
4b9a8c2b YW |
1528 | r = link_initialized(link, device); |
1529 | if (r < 0) | |
1530 | link_enter_failed(link); | |
3be9d62a YW |
1531 | |
1532 | return 0; | |
1533 | } | |
1534 | ||
9c0a72f9 | 1535 | static int link_carrier_gained(Link *link) { |
6706ce2f | 1536 | bool force_reconfigure; |
9c0a72f9 TG |
1537 | int r; |
1538 | ||
1539 | assert(link); | |
1540 | ||
6706ce2f YW |
1541 | r = event_source_disable(link->carrier_lost_timer); |
1542 | if (r < 0) | |
1543 | log_link_warning_errno(link, r, "Failed to disable carrier lost timer, ignoring: %m"); | |
1544 | ||
d9910948 YW |
1545 | /* If a wireless interface was connected to an access point, and the SSID is changed (that is, |
1546 | * both previous_ssid and ssid are non-NULL), then the connected wireless network could be | |
1547 | * changed. So, always reconfigure the link. Which means e.g. the DHCP client will be | |
1548 | * restarted, and the correct network information will be gained. | |
1549 | * | |
1550 | * However, do not reconfigure the wireless interface forcibly if it was not connected to any | |
1551 | * access points previously (previous_ssid is NULL in this case). As, a .network file may be | |
1552 | * already assigned to the interface (in that case, the .network file does not have the SSID= | |
1553 | * setting in the [Match] section), and the interface is already being configured. Of course, | |
1554 | * there may exist another .network file with higher priority and a matching SSID= setting. But | |
1555 | * in that case, link_reconfigure_impl() can handle that without the force_reconfigure flag. | |
1556 | * | |
6706ce2f | 1557 | * For non-wireless interfaces, we have no way to detect the connected network change. So, |
d9910948 YW |
1558 | * setting force_reconfigure = false. Note, both ssid and previous_ssid are NULL in that case. */ |
1559 | force_reconfigure = link->previous_ssid && !streq_ptr(link->previous_ssid, link->ssid); | |
6706ce2f YW |
1560 | link->previous_ssid = mfree(link->previous_ssid); |
1561 | ||
a72d2a7b | 1562 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
b7ac1284 YW |
1563 | /* At this stage, both wlan and link information should be up-to-date. Hence, |
1564 | * it is not necessary to call RTM_GETLINK, NL80211_CMD_GET_INTERFACE, or | |
1565 | * NL80211_CMD_GET_STATION commands, and simply call link_reconfigure_impl(). | |
1566 | * Note, link_reconfigure_impl() returns 1 when the link is reconfigured. */ | |
6706ce2f | 1567 | r = link_reconfigure_impl(link, force_reconfigure); |
b7ac1284 YW |
1568 | if (r != 0) |
1569 | return r; | |
1570 | } | |
1571 | ||
aa9117c0 YW |
1572 | r = link_handle_bound_by_list(link); |
1573 | if (r < 0) | |
1574 | return r; | |
1575 | ||
600b7898 YW |
1576 | if (link->iftype == ARPHRD_CAN) |
1577 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
aa9117c0 | 1578 | return 0; |
600b7898 | 1579 | |
b9ea3d2e | 1580 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
8566df79 | 1581 | r = link_acquire_dynamic_conf(link); |
f0269653 | 1582 | if (r < 0) |
9c0a72f9 | 1583 | return r; |
6fc25497 | 1584 | |
97108953 | 1585 | r = link_request_static_configs(link); |
6fc25497 SS |
1586 | if (r < 0) |
1587 | return r; | |
9c0a72f9 TG |
1588 | } |
1589 | ||
aa9117c0 | 1590 | return 0; |
9c0a72f9 TG |
1591 | } |
1592 | ||
6706ce2f YW |
1593 | static int link_carrier_lost_impl(Link *link) { |
1594 | int r, ret = 0; | |
1595 | ||
1596 | assert(link); | |
1597 | ||
1598 | link->previous_ssid = mfree(link->previous_ssid); | |
1599 | ||
1600 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1601 | return 0; | |
1602 | ||
1603 | if (!link->network) | |
1604 | return 0; | |
1605 | ||
1606 | r = link_stop_engines(link, false); | |
1607 | if (r < 0) | |
1608 | ret = r; | |
1609 | ||
a0e99a37 | 1610 | r = link_drop_managed_config(link); |
6706ce2f YW |
1611 | if (r < 0 && ret >= 0) |
1612 | ret = r; | |
1613 | ||
1614 | return ret; | |
1615 | } | |
1616 | ||
1617 | static int link_carrier_lost_handler(sd_event_source *s, uint64_t usec, void *userdata) { | |
1618 | Link *link = userdata; | |
1619 | int r; | |
1620 | ||
1621 | assert(link); | |
1622 | ||
1623 | r = link_carrier_lost_impl(link); | |
1624 | if (r < 0) { | |
1625 | log_link_warning_errno(link, r, "Failed to process carrier lost event: %m"); | |
1626 | link_enter_failed(link); | |
1627 | } | |
1628 | ||
1629 | return 0; | |
1630 | } | |
1631 | ||
9c0a72f9 TG |
1632 | static int link_carrier_lost(Link *link) { |
1633 | int r; | |
1634 | ||
1635 | assert(link); | |
1636 | ||
aa9117c0 YW |
1637 | r = link_handle_bound_by_list(link); |
1638 | if (r < 0) | |
1639 | return r; | |
93b4dab5 | 1640 | |
600b7898 YW |
1641 | if (link->iftype == ARPHRD_CAN) |
1642 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
aa9117c0 YW |
1643 | return 0; |
1644 | ||
f1c22cf4 YW |
1645 | if (!link->network) |
1646 | return 0; | |
1647 | ||
6706ce2f | 1648 | if (link->network->ignore_carrier_loss_usec == USEC_INFINITY) |
aa9117c0 | 1649 | return 0; |
600b7898 | 1650 | |
6706ce2f YW |
1651 | if (link->network->ignore_carrier_loss_usec == 0) |
1652 | return link_carrier_lost_impl(link); | |
1653 | ||
1654 | return event_reset_time_relative(link->manager->event, | |
1655 | &link->carrier_lost_timer, | |
1656 | clock_boottime_or_monotonic(), | |
1657 | link->network->ignore_carrier_loss_usec, | |
1658 | 0, | |
1659 | link_carrier_lost_handler, | |
1660 | link, | |
1661 | 0, | |
1662 | "link-carrier-loss", | |
1663 | true); | |
0c9ee5d5 YW |
1664 | } |
1665 | ||
0c9ee5d5 YW |
1666 | static int link_admin_state_up(Link *link) { |
1667 | int r; | |
1668 | ||
1669 | assert(link); | |
1670 | ||
1671 | /* This is called every time an interface admin state changes to up; | |
1672 | * specifically, when IFF_UP flag changes from unset to set. */ | |
1673 | ||
1674 | if (!link->network) | |
1675 | return 0; | |
1676 | ||
899b0e5e | 1677 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_DOWN) { |
1a054a20 | 1678 | log_link_info(link, "Activation policy is \"always-down\", forcing link down."); |
712fd5d2 | 1679 | return link_request_to_bring_up_or_down(link, /* up = */ false); |
0c9ee5d5 YW |
1680 | } |
1681 | ||
1682 | /* We set the ipv6 mtu after the device mtu, but the kernel resets | |
1683 | * ipv6 mtu on NETDEV_UP, so we need to reset it. */ | |
1684 | r = link_set_ipv6_mtu(link); | |
1685 | if (r < 0) | |
1686 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU, ignoring: %m"); | |
1687 | ||
1688 | return 0; | |
1689 | } | |
1690 | ||
1691 | static int link_admin_state_down(Link *link) { | |
1692 | assert(link); | |
1693 | ||
1694 | if (!link->network) | |
1695 | return 0; | |
1696 | ||
899b0e5e | 1697 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_UP) { |
1a054a20 | 1698 | log_link_info(link, "Activation policy is \"always-up\", forcing link up."); |
712fd5d2 | 1699 | return link_request_to_bring_up_or_down(link, /* up = */ true); |
0c9ee5d5 YW |
1700 | } |
1701 | ||
1702 | return 0; | |
1703 | } | |
1704 | ||
0c9ee5d5 YW |
1705 | static bool link_is_enslaved(Link *link) { |
1706 | if (link->flags & IFF_SLAVE) | |
0c9ee5d5 YW |
1707 | return true; |
1708 | ||
1f024462 | 1709 | if (link->master_ifindex > 0) |
0c9ee5d5 YW |
1710 | return true; |
1711 | ||
0c9ee5d5 YW |
1712 | return false; |
1713 | } | |
1714 | ||
1715 | static LinkAddressState address_state_from_scope(uint8_t scope) { | |
1716 | if (scope < RT_SCOPE_SITE) | |
1717 | /* universally accessible addresses found */ | |
1718 | return LINK_ADDRESS_STATE_ROUTABLE; | |
1719 | ||
1720 | if (scope < RT_SCOPE_HOST) | |
1721 | /* only link or site local addresses found */ | |
1722 | return LINK_ADDRESS_STATE_DEGRADED; | |
1723 | ||
1724 | /* no useful addresses found */ | |
1725 | return LINK_ADDRESS_STATE_OFF; | |
1726 | } | |
1727 | ||
1728 | void link_update_operstate(Link *link, bool also_update_master) { | |
1729 | LinkOperationalState operstate; | |
1730 | LinkCarrierState carrier_state; | |
1731 | LinkAddressState ipv4_address_state, ipv6_address_state, address_state; | |
1732 | LinkOnlineState online_state; | |
1733 | _cleanup_strv_free_ char **p = NULL; | |
1734 | uint8_t ipv4_scope = RT_SCOPE_NOWHERE, ipv6_scope = RT_SCOPE_NOWHERE; | |
1735 | bool changed = false; | |
1736 | Address *address; | |
1737 | ||
1738 | assert(link); | |
1739 | ||
1740 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
1741 | carrier_state = LINK_CARRIER_STATE_DORMANT; | |
1742 | else if (link_has_carrier(link)) { | |
1743 | if (link_is_enslaved(link)) | |
1744 | carrier_state = LINK_CARRIER_STATE_ENSLAVED; | |
1745 | else | |
1746 | carrier_state = LINK_CARRIER_STATE_CARRIER; | |
1747 | } else if (link->flags & IFF_UP) | |
1748 | carrier_state = LINK_CARRIER_STATE_NO_CARRIER; | |
1749 | else | |
1750 | carrier_state = LINK_CARRIER_STATE_OFF; | |
1751 | ||
1752 | if (carrier_state >= LINK_CARRIER_STATE_CARRIER) { | |
1753 | Link *slave; | |
1754 | ||
1755 | SET_FOREACH(slave, link->slaves) { | |
1756 | link_update_operstate(slave, false); | |
1757 | ||
1758 | if (slave->carrier_state < LINK_CARRIER_STATE_CARRIER) | |
1759 | carrier_state = LINK_CARRIER_STATE_DEGRADED_CARRIER; | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | SET_FOREACH(address, link->addresses) { | |
1764 | if (!address_is_ready(address)) | |
1765 | continue; | |
1766 | ||
1767 | if (address->family == AF_INET) | |
1768 | ipv4_scope = MIN(ipv4_scope, address->scope); | |
1769 | ||
1770 | if (address->family == AF_INET6) | |
1771 | ipv6_scope = MIN(ipv6_scope, address->scope); | |
1772 | } | |
1773 | ||
0c9ee5d5 YW |
1774 | ipv4_address_state = address_state_from_scope(ipv4_scope); |
1775 | ipv6_address_state = address_state_from_scope(ipv6_scope); | |
1776 | address_state = address_state_from_scope(MIN(ipv4_scope, ipv6_scope)); | |
1777 | ||
1778 | /* Mapping of address and carrier state vs operational state | |
1779 | * carrier state | |
1780 | * | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
1781 | * ------------------------------------------------------------------------------ | |
1782 | * off | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
1783 | * address_state degraded | off | no-carrier | dormant | degraded-carrier | degraded | enslaved | |
1784 | * routable | off | no-carrier | dormant | degraded-carrier | routable | routable | |
1785 | */ | |
1786 | ||
1787 | if (carrier_state < LINK_CARRIER_STATE_CARRIER || address_state == LINK_ADDRESS_STATE_OFF) | |
1788 | operstate = (LinkOperationalState) carrier_state; | |
1789 | else if (address_state == LINK_ADDRESS_STATE_ROUTABLE) | |
1790 | operstate = LINK_OPERSTATE_ROUTABLE; | |
1791 | else if (carrier_state == LINK_CARRIER_STATE_CARRIER) | |
1792 | operstate = LINK_OPERSTATE_DEGRADED; | |
1793 | else | |
1794 | operstate = LINK_OPERSTATE_ENSLAVED; | |
1795 | ||
1796 | /* Only determine online state for managed links with RequiredForOnline=yes */ | |
1797 | if (!link->network || !link->network->required_for_online) | |
1798 | online_state = _LINK_ONLINE_STATE_INVALID; | |
1799 | else if (operstate < link->network->required_operstate_for_online.min || | |
1800 | operstate > link->network->required_operstate_for_online.max) | |
1801 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1802 | else { | |
1803 | AddressFamily required_family = link->network->required_family_for_online; | |
1804 | bool needs_ipv4 = required_family & ADDRESS_FAMILY_IPV4; | |
1805 | bool needs_ipv6 = required_family & ADDRESS_FAMILY_IPV6; | |
1806 | ||
1807 | /* The operational state is within the range required for online. | |
1808 | * If a particular address family is also required, we might revert | |
1809 | * to offline in the blocks below. */ | |
1810 | online_state = LINK_ONLINE_STATE_ONLINE; | |
1811 | ||
1812 | if (link->network->required_operstate_for_online.min >= LINK_OPERSTATE_DEGRADED) { | |
1813 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_DEGRADED) | |
1814 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1815 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_DEGRADED) | |
1816 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1817 | } | |
1818 | ||
1819 | if (link->network->required_operstate_for_online.min >= LINK_OPERSTATE_ROUTABLE) { | |
1820 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_ROUTABLE) | |
1821 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1822 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_ROUTABLE) | |
1823 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | if (link->carrier_state != carrier_state) { | |
1828 | link->carrier_state = carrier_state; | |
1829 | changed = true; | |
1830 | if (strv_extend(&p, "CarrierState") < 0) | |
1831 | log_oom(); | |
1832 | } | |
1833 | ||
1834 | if (link->address_state != address_state) { | |
1835 | link->address_state = address_state; | |
1836 | changed = true; | |
1837 | if (strv_extend(&p, "AddressState") < 0) | |
1838 | log_oom(); | |
1839 | } | |
0d4ad91d | 1840 | |
0c9ee5d5 YW |
1841 | if (link->ipv4_address_state != ipv4_address_state) { |
1842 | link->ipv4_address_state = ipv4_address_state; | |
1843 | changed = true; | |
1844 | if (strv_extend(&p, "IPv4AddressState") < 0) | |
1845 | log_oom(); | |
1846 | } | |
9c0a72f9 | 1847 | |
0c9ee5d5 YW |
1848 | if (link->ipv6_address_state != ipv6_address_state) { |
1849 | link->ipv6_address_state = ipv6_address_state; | |
1850 | changed = true; | |
1851 | if (strv_extend(&p, "IPv6AddressState") < 0) | |
1852 | log_oom(); | |
1853 | } | |
9c0a72f9 | 1854 | |
0c9ee5d5 YW |
1855 | if (link->operstate != operstate) { |
1856 | link->operstate = operstate; | |
1857 | changed = true; | |
1858 | if (strv_extend(&p, "OperationalState") < 0) | |
1859 | log_oom(); | |
1860 | } | |
9c0a72f9 | 1861 | |
0c9ee5d5 YW |
1862 | if (link->online_state != online_state) { |
1863 | link->online_state = online_state; | |
1864 | changed = true; | |
1865 | if (strv_extend(&p, "OnlineState") < 0) | |
1866 | log_oom(); | |
1867 | } | |
9c0a72f9 | 1868 | |
0c9ee5d5 YW |
1869 | if (p) |
1870 | link_send_changed_strv(link, p); | |
1871 | if (changed) | |
1872 | link_dirty(link); | |
9c0a72f9 | 1873 | |
0c9ee5d5 YW |
1874 | if (also_update_master) { |
1875 | Link *master; | |
9c0a72f9 | 1876 | |
0c9ee5d5 YW |
1877 | if (link_get_master(link, &master) >= 0) |
1878 | link_update_operstate(master, true); | |
1879 | } | |
9c0a72f9 TG |
1880 | } |
1881 | ||
0c9ee5d5 YW |
1882 | #define FLAG_STRING(string, flag, old, new) \ |
1883 | (((old ^ new) & flag) \ | |
1884 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
1885 | : "") | |
1886 | ||
0d411b7f | 1887 | static int link_update_flags(Link *link, sd_netlink_message *message) { |
96f5f9ef | 1888 | bool link_was_admin_up, had_carrier; |
0c9ee5d5 YW |
1889 | uint8_t operstate; |
1890 | unsigned flags; | |
d236718c DS |
1891 | int r; |
1892 | ||
61135582 | 1893 | assert(link); |
0d411b7f | 1894 | assert(message); |
61135582 | 1895 | |
0d411b7f | 1896 | r = sd_rtnl_message_link_get_flags(message, &flags); |
0c9ee5d5 | 1897 | if (r < 0) |
0d411b7f | 1898 | return log_link_debug_errno(link, r, "rtnl: failed to read link flags: %m"); |
3be9d62a | 1899 | |
0d411b7f YW |
1900 | r = sd_netlink_message_read_u8(message, IFLA_OPERSTATE, &operstate); |
1901 | if (r == -ENODATA) | |
1902 | /* If we got a message without operstate, assume the state was unchanged. */ | |
0c9ee5d5 | 1903 | operstate = link->kernel_operstate; |
0d411b7f YW |
1904 | else if (r < 0) |
1905 | return log_link_debug_errno(link, r, "rtnl: failed to read operational state: %m"); | |
0c9ee5d5 | 1906 | |
0d411b7f | 1907 | if (link->flags == flags && link->kernel_operstate == operstate) |
61135582 DS |
1908 | return 0; |
1909 | ||
0c9ee5d5 YW |
1910 | if (link->flags != flags) { |
1911 | unsigned unknown_flags, unknown_flags_added, unknown_flags_removed; | |
61135582 | 1912 | |
0c9ee5d5 YW |
1913 | 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", |
1914 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), | |
1915 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
1916 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
1917 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
1918 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
1919 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
1920 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
1921 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
1922 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
1923 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
1924 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
1925 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
1926 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
1927 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
1928 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
1929 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
1930 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
1931 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
1932 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
d236718c | 1933 | |
0c9ee5d5 YW |
1934 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | |
1935 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
1936 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
1937 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
1938 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
1939 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
1940 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
1941 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
d236718c | 1942 | |
0c9ee5d5 YW |
1943 | if (unknown_flags_added) |
1944 | log_link_debug(link, "Unknown link flags gained, ignoring: %#.5x", unknown_flags_added); | |
61135582 | 1945 | |
0c9ee5d5 YW |
1946 | if (unknown_flags_removed) |
1947 | log_link_debug(link, "Unknown link flags lost, ignoring: %#.5x", unknown_flags_removed); | |
1948 | } | |
61135582 | 1949 | |
0d411b7f YW |
1950 | link_was_admin_up = link->flags & IFF_UP; |
1951 | had_carrier = link_has_carrier(link); | |
1952 | ||
0c9ee5d5 YW |
1953 | link->flags = flags; |
1954 | link->kernel_operstate = operstate; | |
36161cba | 1955 | |
0c9ee5d5 | 1956 | link_update_operstate(link, true); |
61135582 | 1957 | |
0d411b7f YW |
1958 | if (!link_was_admin_up && (link->flags & IFF_UP)) { |
1959 | log_link_info(link, "Link UP"); | |
22936833 | 1960 | |
0d411b7f YW |
1961 | r = link_admin_state_up(link); |
1962 | if (r < 0) | |
1963 | return r; | |
1964 | } else if (link_was_admin_up && !(link->flags & IFF_UP)) { | |
1965 | log_link_info(link, "Link DOWN"); | |
0d4ad91d | 1966 | |
0d411b7f | 1967 | r = link_admin_state_down(link); |
0d4ad91d AR |
1968 | if (r < 0) |
1969 | return r; | |
7619683b TG |
1970 | } |
1971 | ||
0d411b7f YW |
1972 | if (!had_carrier && link_has_carrier(link)) { |
1973 | log_link_info(link, "Gained carrier"); | |
0d4ad91d | 1974 | |
0d411b7f | 1975 | r = link_carrier_gained(link); |
30de2b89 YW |
1976 | if (r < 0) |
1977 | return r; | |
0d411b7f YW |
1978 | } else if (had_carrier && !link_has_carrier(link)) { |
1979 | log_link_info(link, "Lost carrier"); | |
1980 | ||
1981 | r = link_carrier_lost(link); | |
0b54c870 YW |
1982 | if (r < 0) |
1983 | return r; | |
b8941f74 TG |
1984 | } |
1985 | ||
0d411b7f YW |
1986 | return 0; |
1987 | } | |
afe7fd56 | 1988 | |
0d411b7f YW |
1989 | static int link_update_master(Link *link, sd_netlink_message *message) { |
1990 | int master_ifindex, r; | |
7465dd22 | 1991 | |
0d411b7f YW |
1992 | assert(link); |
1993 | assert(message); | |
69629de9 | 1994 | |
0d411b7f YW |
1995 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t*) &master_ifindex); |
1996 | if (r == -ENODATA) | |
1997 | return 0; | |
1998 | if (r < 0) | |
1999 | return log_link_debug_errno(link, r, "rtnl: failed to read master ifindex: %m"); | |
807667f7 | 2000 | |
571bf1aa YW |
2001 | if (master_ifindex == link->ifindex) |
2002 | master_ifindex = 0; | |
2003 | ||
0d411b7f YW |
2004 | if (master_ifindex == link->master_ifindex) |
2005 | return 0; | |
807667f7 | 2006 | |
0d411b7f YW |
2007 | if (link->master_ifindex == 0) |
2008 | log_link_debug(link, "Joined to master interface: %i", master_ifindex); | |
2009 | else if (master_ifindex == 0) | |
2010 | log_link_debug(link, "Leaved from master interface: %i", link->master_ifindex); | |
2011 | else | |
2012 | log_link_debug(link, "Master interface is changed: %i → %i", link->master_ifindex, master_ifindex); | |
807667f7 | 2013 | |
0d411b7f | 2014 | link_drop_from_master(link); |
807667f7 | 2015 | |
0d411b7f | 2016 | link->master_ifindex = master_ifindex; |
413708d1 | 2017 | |
0d411b7f YW |
2018 | r = link_append_to_master(link); |
2019 | if (r < 0) | |
2020 | return log_link_debug_errno(link, r, "Failed to append link to master: %m"); | |
7465dd22 | 2021 | |
0d411b7f YW |
2022 | return 0; |
2023 | } | |
807667f7 | 2024 | |
0d411b7f | 2025 | static int link_update_hardware_address(Link *link, sd_netlink_message *message) { |
e2bacccd | 2026 | struct hw_addr_data addr; |
0d411b7f | 2027 | int r; |
d93d655c | 2028 | |
0d411b7f YW |
2029 | assert(link); |
2030 | assert(message); | |
dfc58b47 | 2031 | |
0d411b7f YW |
2032 | r = netlink_message_read_hw_addr(message, IFLA_BROADCAST, &link->bcast_addr); |
2033 | if (r < 0 && r != -ENODATA) | |
2034 | return log_link_debug_errno(link, r, "rtnl: failed to read broadcast address: %m"); | |
4f882b2a | 2035 | |
e2bacccd | 2036 | r = netlink_message_read_hw_addr(message, IFLA_ADDRESS, &addr); |
0d411b7f YW |
2037 | if (r == -ENODATA) |
2038 | return 0; | |
2039 | if (r < 0) | |
fe321d45 | 2040 | return log_link_debug_errno(link, r, "rtnl: failed to read hardware address: %m"); |
bb262ef0 | 2041 | |
e2bacccd | 2042 | if (hw_addr_equal(&link->hw_addr, &addr)) |
0d411b7f | 2043 | return 0; |
a61bb41c | 2044 | |
de0f1579 | 2045 | if (link->hw_addr.length == 0) |
e2bacccd | 2046 | log_link_debug(link, "Saved hardware address: %s", HW_ADDR_TO_STR(&addr)); |
fe321d45 YW |
2047 | else { |
2048 | log_link_debug(link, "Hardware address is changed: %s → %s", | |
e2bacccd | 2049 | HW_ADDR_TO_STR(&link->hw_addr), HW_ADDR_TO_STR(&addr)); |
0d411b7f | 2050 | |
e74f1d07 | 2051 | hashmap_remove_value(link->manager->links_by_hw_addr, &link->hw_addr, link); |
fe321d45 YW |
2052 | } |
2053 | ||
e2bacccd YW |
2054 | link->hw_addr = addr; |
2055 | ||
fe321d45 YW |
2056 | if (!hw_addr_is_null(&link->hw_addr)) { |
2057 | r = hashmap_ensure_put(&link->manager->links_by_hw_addr, &hw_addr_hash_ops, &link->hw_addr, link); | |
2058 | if (r == -EEXIST && streq_ptr(link->kind, "bond")) | |
2059 | /* bonding master and its slaves have the same hardware address. */ | |
2060 | r = hashmap_replace(link->manager->links_by_hw_addr, &link->hw_addr, link); | |
2061 | if (r < 0) | |
2062 | log_link_debug_errno(link, r, "Failed to manage link by its new hardware address, ignoring: %m"); | |
2063 | } | |
0d411b7f | 2064 | |
76a86ffd YW |
2065 | r = ipv4ll_update_mac(link); |
2066 | if (r < 0) | |
2067 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4 ACD client: %m"); | |
2068 | ||
0d411b7f | 2069 | r = ipv4ll_update_mac(link); |
a61bb41c | 2070 | if (r < 0) |
0d411b7f | 2071 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); |
a61bb41c | 2072 | |
0d411b7f YW |
2073 | r = dhcp4_update_mac(link); |
2074 | if (r < 0) | |
2075 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
d236718c | 2076 | |
0d411b7f YW |
2077 | r = dhcp6_update_mac(link); |
2078 | if (r < 0) | |
2079 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
2080 | ||
2081 | r = radv_update_mac(link); | |
2082 | if (r < 0) | |
2083 | return log_link_debug_errno(link, r, "Could not update MAC address for Router Advertisement: %m"); | |
2084 | ||
2085 | if (link->ndisc) { | |
ca2b7cd8 | 2086 | r = sd_ndisc_set_mac(link->ndisc, &link->hw_addr.ether); |
d236718c | 2087 | if (r < 0) |
0d411b7f YW |
2088 | return log_link_debug_errno(link, r, "Could not update MAC for NDisc: %m"); |
2089 | } | |
d236718c | 2090 | |
35778343 YW |
2091 | if (link->lldp_rx) { |
2092 | r = sd_lldp_rx_set_filter_address(link->lldp_rx, &link->hw_addr.ether); | |
61135582 | 2093 | if (r < 0) |
c01b9b87 YW |
2094 | return log_link_debug_errno(link, r, "Could not update MAC address for LLDP Rx: %m"); |
2095 | } | |
2096 | ||
2097 | if (link->lldp_tx) { | |
2098 | r = sd_lldp_tx_set_hwaddr(link->lldp_tx, &link->hw_addr.ether); | |
2099 | if (r < 0) | |
2100 | return log_link_debug_errno(link, r, "Could not update MAC address for LLDP Tx: %m"); | |
61135582 DS |
2101 | } |
2102 | ||
0d411b7f YW |
2103 | return 0; |
2104 | } | |
a61bb41c | 2105 | |
0d411b7f | 2106 | static int link_update_mtu(Link *link, sd_netlink_message *message) { |
717ba5fc | 2107 | uint32_t mtu, min_mtu = 0, max_mtu = UINT32_MAX; |
0d411b7f | 2108 | int r; |
a61bb41c | 2109 | |
0d411b7f YW |
2110 | assert(link); |
2111 | assert(message); | |
2112 | ||
2113 | r = sd_netlink_message_read_u32(message, IFLA_MTU, &mtu); | |
2114 | if (r == -ENODATA) | |
2115 | return 0; | |
2116 | if (r < 0) | |
2117 | return log_link_debug_errno(link, r, "rtnl: failed to read MTU in RTM_NEWLINK message: %m"); | |
b5d0fd1e YW |
2118 | if (mtu == 0) |
2119 | return 0; | |
0d411b7f | 2120 | |
717ba5fc YW |
2121 | r = sd_netlink_message_read_u32(message, IFLA_MIN_MTU, &min_mtu); |
2122 | if (r < 0 && r != -ENODATA) | |
2123 | return log_link_debug_errno(link, r, "rtnl: failed to read minimum MTU in RTM_NEWLINK message: %m"); | |
2124 | ||
2125 | r = sd_netlink_message_read_u32(message, IFLA_MAX_MTU, &max_mtu); | |
2126 | if (r < 0 && r != -ENODATA) | |
2127 | return log_link_debug_errno(link, r, "rtnl: failed to read maximum MTU in RTM_NEWLINK message: %m"); | |
2128 | ||
717ba5fc YW |
2129 | if (max_mtu == 0) |
2130 | max_mtu = UINT32_MAX; | |
2131 | ||
2132 | link->min_mtu = min_mtu; | |
2133 | link->max_mtu = max_mtu; | |
2134 | ||
0d411b7f YW |
2135 | if (link->original_mtu == 0) { |
2136 | link->original_mtu = mtu; | |
717ba5fc YW |
2137 | log_link_debug(link, "Saved original MTU %" PRIu32" (min: %"PRIu32", max: %"PRIu32")", |
2138 | link->original_mtu, link->min_mtu, link->max_mtu); | |
0d411b7f YW |
2139 | } |
2140 | ||
717ba5fc YW |
2141 | if (link->mtu == mtu) |
2142 | return 0; | |
2143 | ||
b5d0fd1e YW |
2144 | if (link->mtu != 0) |
2145 | log_link_debug(link, "MTU is changed: %"PRIu32" → %"PRIu32" (min: %"PRIu32", max: %"PRIu32")", | |
2146 | link->mtu, mtu, link->min_mtu, link->max_mtu); | |
0d411b7f YW |
2147 | |
2148 | link->mtu = mtu; | |
2149 | ||
2150 | if (link->dhcp_client) { | |
2151 | r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu); | |
9c0a72f9 | 2152 | if (r < 0) |
0d411b7f YW |
2153 | return log_link_debug_errno(link, r, "Could not update MTU in DHCP client: %m"); |
2154 | } | |
a61bb41c | 2155 | |
0d411b7f YW |
2156 | if (link->radv) { |
2157 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
9c0a72f9 | 2158 | if (r < 0) |
0d411b7f | 2159 | return log_link_debug_errno(link, r, "Could not set MTU for Router Advertisement: %m"); |
a61bb41c TG |
2160 | } |
2161 | ||
2162 | return 0; | |
dd3efc09 | 2163 | } |
fe8db0c5 | 2164 | |
0d411b7f YW |
2165 | static int link_update_alternative_names(Link *link, sd_netlink_message *message) { |
2166 | _cleanup_strv_free_ char **altnames = NULL; | |
2167 | char **n; | |
2168 | int r; | |
2169 | ||
2170 | assert(link); | |
2171 | assert(message); | |
2172 | ||
2173 | r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &altnames); | |
50df02a7 YW |
2174 | if (r == -ENODATA) |
2175 | /* The message does not have IFLA_PROP_LIST container attribute. It does not means the | |
2176 | * interface has no alternative name. */ | |
2177 | return 0; | |
2178 | if (r < 0) | |
0d411b7f YW |
2179 | return log_link_debug_errno(link, r, "rtnl: failed to read alternative names: %m"); |
2180 | ||
1b345c1e YW |
2181 | if (strv_equal(altnames, link->alternative_names)) |
2182 | return 0; | |
2183 | ||
0d411b7f YW |
2184 | STRV_FOREACH(n, link->alternative_names) |
2185 | hashmap_remove(link->manager->links_by_name, *n); | |
2186 | ||
2187 | strv_free_and_replace(link->alternative_names, altnames); | |
2188 | ||
2189 | STRV_FOREACH(n, link->alternative_names) { | |
2190 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, *n, link); | |
2191 | if (r < 0) | |
2192 | return log_link_debug_errno(link, r, "Failed to manage link by its new alternative names: %m"); | |
2193 | } | |
2194 | ||
2195 | return 0; | |
2196 | } | |
2197 | ||
2198 | static int link_update_name(Link *link, sd_netlink_message *message) { | |
01afd0f7 | 2199 | char ifname_from_index[IF_NAMESIZE]; |
0d411b7f YW |
2200 | const char *ifname; |
2201 | int r; | |
2202 | ||
2203 | assert(link); | |
2204 | assert(message); | |
2205 | ||
2206 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); | |
2207 | if (r == -ENODATA) | |
7802194a | 2208 | /* Hmm?? But ok. */ |
0d411b7f YW |
2209 | return 0; |
2210 | if (r < 0) | |
2211 | return log_link_debug_errno(link, r, "Failed to read interface name in RTM_NEWLINK message: %m"); | |
2212 | ||
2213 | if (streq(ifname, link->ifname)) | |
2214 | return 0; | |
2215 | ||
01afd0f7 YW |
2216 | r = format_ifname(link->ifindex, ifname_from_index); |
2217 | if (r < 0) | |
2218 | return log_link_debug_errno(link, r, "Could not get interface name for index %i.", link->ifindex); | |
176b8be1 YW |
2219 | |
2220 | if (!streq(ifname, ifname_from_index)) { | |
2221 | log_link_debug(link, "New interface name '%s' received from the kernel does not correspond " | |
2222 | "with the name currently configured on the actual interface '%s'. Ignoring.", | |
2223 | ifname, ifname_from_index); | |
2224 | return 0; | |
2225 | } | |
2226 | ||
0d411b7f YW |
2227 | log_link_info(link, "Interface name change detected, renamed to %s.", ifname); |
2228 | ||
2229 | hashmap_remove(link->manager->links_by_name, link->ifname); | |
2230 | ||
2231 | r = free_and_strdup(&link->ifname, ifname); | |
2232 | if (r < 0) | |
2233 | return log_oom_debug(); | |
2234 | ||
2235 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, link->ifname, link); | |
2236 | if (r < 0) | |
2237 | return log_link_debug_errno(link, r, "Failed to manage link by its new name: %m"); | |
2238 | ||
54d1fdb2 YW |
2239 | if (link->dhcp_client) { |
2240 | r = sd_dhcp_client_set_ifname(link->dhcp_client, link->ifname); | |
2241 | if (r < 0) | |
2242 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP client: %m"); | |
2243 | } | |
2244 | ||
2245 | if (link->dhcp6_client) { | |
2246 | r = sd_dhcp6_client_set_ifname(link->dhcp6_client, link->ifname); | |
2247 | if (r < 0) | |
2248 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP6 client: %m"); | |
2249 | } | |
2250 | ||
2251 | if (link->ndisc) { | |
2252 | r = sd_ndisc_set_ifname(link->ndisc, link->ifname); | |
2253 | if (r < 0) | |
2254 | return log_link_debug_errno(link, r, "Failed to update interface name in NDisc: %m"); | |
2255 | } | |
2256 | ||
2257 | if (link->dhcp_server) { | |
2258 | r = sd_dhcp_server_set_ifname(link->dhcp_server, link->ifname); | |
2259 | if (r < 0) | |
2260 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP server: %m"); | |
2261 | } | |
2262 | ||
2263 | if (link->radv) { | |
2264 | r = sd_radv_set_ifname(link->radv, link->ifname); | |
2265 | if (r < 0) | |
2266 | return log_link_debug_errno(link, r, "Failed to update interface name in Router Advertisement: %m"); | |
2267 | } | |
2268 | ||
35778343 YW |
2269 | if (link->lldp_rx) { |
2270 | r = sd_lldp_rx_set_ifname(link->lldp_rx, link->ifname); | |
54d1fdb2 | 2271 | if (r < 0) |
c01b9b87 YW |
2272 | return log_link_debug_errno(link, r, "Failed to update interface name in LLDP Rx: %m"); |
2273 | } | |
2274 | ||
2275 | if (link->lldp_tx) { | |
2276 | r = sd_lldp_tx_set_ifname(link->lldp_tx, link->ifname); | |
2277 | if (r < 0) | |
2278 | return log_link_debug_errno(link, r, "Failed to update interface name in LLDP Tx: %m"); | |
54d1fdb2 YW |
2279 | } |
2280 | ||
2281 | if (link->ipv4ll) { | |
2282 | r = sd_ipv4ll_set_ifname(link->ipv4ll, link->ifname); | |
2283 | if (r < 0) | |
2284 | return log_link_debug_errno(link, r, "Failed to update interface name in IPv4LL client: %m"); | |
2285 | } | |
2286 | ||
86173383 YW |
2287 | r = ipv4acd_set_ifname(link); |
2288 | if (r < 0) | |
2289 | return log_link_debug_errno(link, r, "Failed to update interface name in IPv4ACD client: %m"); | |
54d1fdb2 | 2290 | |
0d411b7f YW |
2291 | return 0; |
2292 | } | |
2293 | ||
2294 | static int link_update(Link *link, sd_netlink_message *message) { | |
2295 | int r; | |
2296 | ||
2297 | assert(link); | |
2298 | assert(message); | |
2299 | ||
2300 | r = link_update_name(link, message); | |
2301 | if (r < 0) | |
2302 | return r; | |
2303 | ||
2304 | r = link_update_alternative_names(link, message); | |
2305 | if (r < 0) | |
2306 | return r; | |
2307 | ||
2308 | r = link_update_mtu(link, message); | |
2309 | if (r < 0) | |
2310 | return r; | |
2311 | ||
2312 | r = link_update_hardware_address(link, message); | |
2313 | if (r < 0) | |
2314 | return r; | |
2315 | ||
2316 | r = link_update_master(link, message); | |
2317 | if (r < 0) | |
2318 | return r; | |
2319 | ||
7d0d832d YW |
2320 | r = link_update_ipv6ll_addrgen_mode(link, message); |
2321 | if (r < 0) | |
2322 | return r; | |
2323 | ||
0d411b7f YW |
2324 | return link_update_flags(link, message); |
2325 | } | |
2326 | ||
0c9ee5d5 YW |
2327 | static Link *link_drop_or_unref(Link *link) { |
2328 | if (!link) | |
2329 | return NULL; | |
2330 | if (!link->manager) | |
2331 | return link_unref(link); | |
2332 | return link_drop(link); | |
2333 | } | |
2334 | ||
2335 | DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_drop_or_unref); | |
2336 | ||
2337 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { | |
0d411b7f | 2338 | _cleanup_free_ char *ifname = NULL, *kind = NULL, *state_file = NULL, *lease_file = NULL, *lldp_file = NULL; |
0c9ee5d5 | 2339 | _cleanup_(link_drop_or_unrefp) Link *link = NULL; |
0c9ee5d5 YW |
2340 | unsigned short iftype; |
2341 | int r, ifindex; | |
0c9ee5d5 YW |
2342 | |
2343 | assert(manager); | |
2344 | assert(message); | |
2345 | assert(ret); | |
2346 | ||
0c9ee5d5 YW |
2347 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
2348 | if (r < 0) | |
0d411b7f | 2349 | return log_debug_errno(r, "rtnl: failed to read ifindex from link message: %m"); |
0c9ee5d5 | 2350 | else if (ifindex <= 0) |
0d411b7f | 2351 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "rtnl: received link message without valid ifindex."); |
0c9ee5d5 YW |
2352 | |
2353 | r = sd_rtnl_message_link_get_type(message, &iftype); | |
2354 | if (r < 0) | |
0d411b7f | 2355 | return log_debug_errno(r, "rtnl: failed to read interface type from link message: %m"); |
0c9ee5d5 YW |
2356 | |
2357 | r = sd_netlink_message_read_string_strdup(message, IFLA_IFNAME, &ifname); | |
2358 | if (r < 0) | |
0d411b7f | 2359 | return log_debug_errno(r, "rtnl: failed to read interface name from link message: %m"); |
0c9ee5d5 YW |
2360 | |
2361 | /* check for link kind */ | |
2362 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
2363 | if (r >= 0) { | |
0d411b7f YW |
2364 | r = sd_netlink_message_read_string_strdup(message, IFLA_INFO_KIND, &kind); |
2365 | if (r < 0 && r != -ENODATA) | |
2366 | return log_debug_errno(r, "rtnl: failed to read interface kind from link message: %m"); | |
0c9ee5d5 YW |
2367 | r = sd_netlink_message_exit_container(message); |
2368 | if (r < 0) | |
0d411b7f | 2369 | return log_debug_errno(r, "rtnl: failed to exit IFLA_LINKINFO container: %m"); |
0c9ee5d5 YW |
2370 | } |
2371 | ||
4c78dc17 YW |
2372 | if (!manager->test_mode) { |
2373 | /* Do not update state files when running in test mode. */ | |
2374 | if (asprintf(&state_file, "/run/systemd/netif/links/%d", ifindex) < 0) | |
2375 | return log_oom_debug(); | |
0d411b7f | 2376 | |
4c78dc17 YW |
2377 | if (asprintf(&lease_file, "/run/systemd/netif/leases/%d", ifindex) < 0) |
2378 | return log_oom_debug(); | |
0d411b7f | 2379 | |
4c78dc17 YW |
2380 | if (asprintf(&lldp_file, "/run/systemd/netif/lldp/%d", ifindex) < 0) |
2381 | return log_oom_debug(); | |
2382 | } | |
0d411b7f | 2383 | |
0c9ee5d5 YW |
2384 | link = new(Link, 1); |
2385 | if (!link) | |
2386 | return -ENOMEM; | |
2387 | ||
2388 | *link = (Link) { | |
2389 | .n_ref = 1, | |
2390 | .state = LINK_STATE_PENDING, | |
2391 | .online_state = _LINK_ONLINE_STATE_INVALID, | |
2392 | .ifindex = ifindex, | |
2393 | .iftype = iftype, | |
2394 | .ifname = TAKE_PTR(ifname), | |
2395 | .kind = TAKE_PTR(kind), | |
2396 | ||
7d0d832d YW |
2397 | .ipv6ll_address_gen_mode = _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_INVALID, |
2398 | ||
0d411b7f YW |
2399 | .state_file = TAKE_PTR(state_file), |
2400 | .lease_file = TAKE_PTR(lease_file), | |
2401 | .lldp_file = TAKE_PTR(lldp_file), | |
2402 | ||
0c9ee5d5 YW |
2403 | .n_dns = UINT_MAX, |
2404 | .dns_default_route = -1, | |
2405 | .llmnr = _RESOLVE_SUPPORT_INVALID, | |
2406 | .mdns = _RESOLVE_SUPPORT_INVALID, | |
2407 | .dnssec_mode = _DNSSEC_MODE_INVALID, | |
2408 | .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID, | |
2409 | }; | |
2410 | ||
6eab614d | 2411 | r = hashmap_ensure_put(&manager->links_by_index, NULL, INT_TO_PTR(link->ifindex), link); |
0c9ee5d5 | 2412 | if (r < 0) |
0d411b7f | 2413 | return log_link_debug_errno(link, r, "Failed to store link into manager: %m"); |
0c9ee5d5 YW |
2414 | |
2415 | link->manager = manager; | |
2416 | ||
0d411b7f | 2417 | r = hashmap_ensure_put(&manager->links_by_name, &string_hash_ops, link->ifname, link); |
0c9ee5d5 | 2418 | if (r < 0) |
0d411b7f | 2419 | return log_link_debug_errno(link, r, "Failed to manage link by its interface name: %m"); |
0c9ee5d5 | 2420 | |
8a77e245 YW |
2421 | log_link_debug(link, "Saved new link: ifindex=%i, iftype=%s(%u), kind=%s", |
2422 | link->ifindex, strna(arphrd_to_name(link->iftype)), link->iftype, strna(link->kind)); | |
2423 | ||
4fea97a6 YW |
2424 | r = netlink_message_read_hw_addr(message, IFLA_PERM_ADDRESS, &link->permanent_hw_addr); |
2425 | if (r < 0) { | |
2426 | if (r != -ENODATA) | |
2427 | log_link_debug_errno(link, r, "Failed to read IFLA_PERM_ADDRESS attribute, ignoring: %m"); | |
2428 | ||
2429 | if (netlink_message_read_hw_addr(message, IFLA_ADDRESS, NULL) >= 0) { | |
2430 | /* Fallback to ethtool, if the link has a hardware address. */ | |
2431 | r = ethtool_get_permanent_hw_addr(&manager->ethtool_fd, link->ifname, &link->permanent_hw_addr); | |
2432 | if (r < 0) | |
2433 | log_link_debug_errno(link, r, "Permanent hardware address not found, continuing without: %m"); | |
2434 | } | |
2435 | } | |
8a77e245 YW |
2436 | if (link->permanent_hw_addr.length > 0) |
2437 | log_link_debug(link, "Saved permanent hardware address: %s", HW_ADDR_TO_STR(&link->permanent_hw_addr)); | |
0c9ee5d5 YW |
2438 | |
2439 | r = ethtool_get_driver(&manager->ethtool_fd, link->ifname, &link->driver); | |
2440 | if (r < 0) | |
2441 | log_link_debug_errno(link, r, "Failed to get driver, continuing without: %m"); | |
df25b9e4 YW |
2442 | else |
2443 | log_link_debug(link, "Found driver: %s", strna(link->driver)); | |
0c9ee5d5 | 2444 | |
b1d9c504 YW |
2445 | if (streq_ptr(link->driver, "dsa")) { |
2446 | uint32_t dsa_master_ifindex; | |
2447 | ||
2448 | r = sd_netlink_message_read_u32(message, IFLA_LINK, &dsa_master_ifindex); | |
2449 | if (r < 0) { | |
2450 | dsa_master_ifindex = 0; | |
2451 | if (r != -ENODATA) | |
2452 | log_link_warning_errno(link, r, "rtnl: failed to read ifindex of the DSA master interface, ignoring: %m"); | |
2453 | } else if (dsa_master_ifindex > INT_MAX) { | |
2454 | dsa_master_ifindex = 0; | |
2455 | log_link_warning(link, "rtnl: received too large DSA master ifindex (%"PRIu32" > INT_MAX), ignoring.", | |
2456 | dsa_master_ifindex); | |
2457 | } | |
2458 | ||
2459 | link->dsa_master_ifindex = (int) dsa_master_ifindex; | |
2460 | } | |
2461 | ||
0c9ee5d5 | 2462 | *ret = TAKE_PTR(link); |
0c9ee5d5 YW |
2463 | return 0; |
2464 | } | |
2465 | ||
0d411b7f | 2466 | int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *manager) { |
3be9d62a YW |
2467 | Link *link = NULL; |
2468 | NetDev *netdev = NULL; | |
2469 | uint16_t type; | |
2470 | const char *name; | |
2471 | int r, ifindex; | |
2472 | ||
2473 | assert(rtnl); | |
2474 | assert(message); | |
0d411b7f | 2475 | assert(manager); |
3be9d62a YW |
2476 | |
2477 | if (sd_netlink_message_is_error(message)) { | |
2478 | r = sd_netlink_message_get_errno(message); | |
2479 | if (r < 0) | |
2480 | log_message_warning_errno(message, r, "rtnl: Could not receive link message, ignoring"); | |
2481 | ||
2482 | return 0; | |
2483 | } | |
2484 | ||
2485 | r = sd_netlink_message_get_type(message, &type); | |
2486 | if (r < 0) { | |
2487 | log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m"); | |
2488 | return 0; | |
2489 | } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) { | |
2490 | log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type); | |
2491 | return 0; | |
2492 | } | |
2493 | ||
2494 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
2495 | if (r < 0) { | |
2496 | log_warning_errno(r, "rtnl: Could not get ifindex from link message, ignoring: %m"); | |
2497 | return 0; | |
2498 | } else if (ifindex <= 0) { | |
2499 | log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex); | |
2500 | return 0; | |
2501 | } | |
2502 | ||
2503 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name); | |
2504 | if (r < 0) { | |
2505 | log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m"); | |
2506 | return 0; | |
2507 | } | |
2508 | ||
6eab614d | 2509 | (void) link_get_by_index(manager, ifindex, &link); |
0d411b7f | 2510 | (void) netdev_get(manager, name, &netdev); |
3be9d62a YW |
2511 | |
2512 | switch (type) { | |
2513 | case RTM_NEWLINK: | |
0d411b7f YW |
2514 | if (netdev) { |
2515 | /* netdev exists, so make sure the ifindex matches */ | |
2516 | r = netdev_set_ifindex(netdev, message); | |
2517 | if (r < 0) { | |
66141164 | 2518 | log_netdev_warning_errno(netdev, r, "Could not process new link message for netdev, ignoring: %m"); |
0d411b7f YW |
2519 | return 0; |
2520 | } | |
2521 | } | |
2522 | ||
3be9d62a YW |
2523 | if (!link) { |
2524 | /* link is new, so add it */ | |
0d411b7f | 2525 | r = link_new(manager, message, &link); |
3be9d62a | 2526 | if (r < 0) { |
0d411b7f | 2527 | log_warning_errno(r, "Could not process new link message: %m"); |
3be9d62a YW |
2528 | return 0; |
2529 | } | |
3be9d62a | 2530 | |
0d411b7f | 2531 | r = link_update(link, message); |
3be9d62a | 2532 | if (r < 0) { |
66141164 | 2533 | log_link_warning_errno(link, r, "Could not process link message: %m"); |
0d411b7f | 2534 | link_enter_failed(link); |
3be9d62a YW |
2535 | return 0; |
2536 | } | |
3be9d62a | 2537 | |
0d411b7f YW |
2538 | r = link_check_initialized(link); |
2539 | if (r < 0) { | |
66141164 | 2540 | log_link_warning_errno(link, r, "Failed to check link is initialized: %m"); |
0d411b7f YW |
2541 | link_enter_failed(link); |
2542 | return 0; | |
2543 | } | |
2544 | } else { | |
2545 | r = link_update(link, message); | |
2546 | if (r < 0) { | |
66141164 | 2547 | log_link_warning_errno(link, r, "Could not process link message: %m"); |
0d411b7f YW |
2548 | link_enter_failed(link); |
2549 | return 0; | |
2550 | } | |
3be9d62a | 2551 | } |
3be9d62a YW |
2552 | break; |
2553 | ||
2554 | case RTM_DELLINK: | |
2555 | link_drop(link); | |
2556 | netdev_drop(netdev); | |
3be9d62a YW |
2557 | break; |
2558 | ||
2559 | default: | |
04499a70 | 2560 | assert_not_reached(); |
3be9d62a YW |
2561 | } |
2562 | ||
2563 | return 1; | |
2564 | } | |
2565 | ||
79c6e114 YW |
2566 | int link_getlink_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg) { |
2567 | uint16_t message_type; | |
2568 | int r; | |
2569 | ||
2570 | assert(m); | |
2571 | assert(link); | |
2572 | assert(error_msg); | |
2573 | ||
2574 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
2575 | return 0; | |
2576 | ||
2577 | r = sd_netlink_message_get_errno(m); | |
2578 | if (r < 0) { | |
2579 | log_link_message_warning_errno(link, m, r, error_msg); | |
2580 | link_enter_failed(link); | |
2581 | return 0; | |
2582 | } | |
2583 | ||
2584 | r = sd_netlink_message_get_type(m, &message_type); | |
2585 | if (r < 0) { | |
2586 | log_link_debug_errno(link, r, "rtnl: failed to read link message type, ignoring: %m"); | |
2587 | return 0; | |
2588 | } | |
2589 | if (message_type != RTM_NEWLINK) { | |
2590 | log_link_debug(link, "rtnl: received invalid link message type, ignoring."); | |
2591 | return 0; | |
2592 | } | |
2593 | ||
2594 | r = link_update(link, m); | |
2595 | if (r < 0) { | |
2596 | link_enter_failed(link); | |
2597 | return 0; | |
2598 | } | |
2599 | ||
2600 | return 1; | |
2601 | } | |
2602 | ||
2603 | int link_call_getlink(Link *link, link_netlink_message_handler_t callback) { | |
2604 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
2605 | int r; | |
2606 | ||
2607 | assert(link); | |
2608 | assert(link->manager); | |
2609 | assert(link->manager->rtnl); | |
2610 | assert(callback); | |
2611 | ||
2612 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, link->ifindex); | |
2613 | if (r < 0) | |
2614 | return r; | |
2615 | ||
2616 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, | |
2617 | link_netlink_destroy_callback, link); | |
2618 | if (r < 0) | |
2619 | return r; | |
2620 | ||
2621 | link_ref(link); | |
2622 | return 0; | |
2623 | } | |
2624 | ||
fe8db0c5 | 2625 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
0580badc | 2626 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 2627 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 2628 | [LINK_STATE_CONFIGURING] = "configuring", |
0580badc ZJS |
2629 | [LINK_STATE_CONFIGURED] = "configured", |
2630 | [LINK_STATE_UNMANAGED] = "unmanaged", | |
2631 | [LINK_STATE_FAILED] = "failed", | |
2632 | [LINK_STATE_LINGER] = "linger", | |
fe8db0c5 TG |
2633 | }; |
2634 | ||
2635 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
7ae55b78 YW |
2636 | |
2637 | int link_flags_to_string_alloc(uint32_t flags, char **ret) { | |
2638 | _cleanup_free_ char *str = NULL; | |
19aa7eeb ZJS |
2639 | static const char* map[] = { |
2640 | [LOG2U(IFF_UP)] = "up", /* interface is up. */ | |
2641 | [LOG2U(IFF_BROADCAST)] = "broadcast", /* broadcast address valid.*/ | |
2642 | [LOG2U(IFF_DEBUG)] = "debug", /* turn on debugging. */ | |
2643 | [LOG2U(IFF_LOOPBACK)] = "loopback", /* interface is a loopback net. */ | |
2644 | [LOG2U(IFF_POINTOPOINT)] = "point-to-point", /* interface has p-p link. */ | |
2645 | [LOG2U(IFF_NOTRAILERS)] = "no-trailers", /* avoid use of trailers. */ | |
2646 | [LOG2U(IFF_RUNNING)] = "running", /* interface RFC2863 OPER_UP. */ | |
2647 | [LOG2U(IFF_NOARP)] = "no-arp", /* no ARP protocol. */ | |
2648 | [LOG2U(IFF_PROMISC)] = "promiscuous", /* receive all packets. */ | |
2649 | [LOG2U(IFF_ALLMULTI)] = "all-multicast", /* receive all multicast packets. */ | |
2650 | [LOG2U(IFF_MASTER)] = "master", /* master of a load balancer. */ | |
2651 | [LOG2U(IFF_SLAVE)] = "slave", /* slave of a load balancer. */ | |
2652 | [LOG2U(IFF_MULTICAST)] = "multicast", /* supports multicast.*/ | |
2653 | [LOG2U(IFF_PORTSEL)] = "portsel", /* can set media type. */ | |
2654 | [LOG2U(IFF_AUTOMEDIA)] = "auto-media", /* auto media select active. */ | |
2655 | [LOG2U(IFF_DYNAMIC)] = "dynamic", /* dialup device with changing addresses. */ | |
2656 | [LOG2U(IFF_LOWER_UP)] = "lower-up", /* driver signals L1 up. */ | |
2657 | [LOG2U(IFF_DORMANT)] = "dormant", /* driver signals dormant. */ | |
2658 | [LOG2U(IFF_ECHO)] = "echo", /* echo sent packets. */ | |
7ae55b78 YW |
2659 | }; |
2660 | ||
2661 | assert(ret); | |
2662 | ||
2663 | for (size_t i = 0; i < ELEMENTSOF(map); i++) | |
19aa7eeb ZJS |
2664 | if (FLAGS_SET(flags, 1 << i) && map[i]) |
2665 | if (!strextend_with_separator(&str, ",", map[i])) | |
2666 | return -ENOMEM; | |
7ae55b78 YW |
2667 | |
2668 | *ret = TAKE_PTR(str); | |
2669 | return 0; | |
2670 | } | |
2671 | ||
2672 | static const char * const kernel_operstate_table[] = { | |
2673 | [IF_OPER_UNKNOWN] = "unknown", | |
2674 | [IF_OPER_NOTPRESENT] = "not-present", | |
2675 | [IF_OPER_DOWN] = "down", | |
2676 | [IF_OPER_LOWERLAYERDOWN] = "lower-layer-down", | |
2677 | [IF_OPER_TESTING] = "testing", | |
2678 | [IF_OPER_DORMANT] = "dormant", | |
2679 | [IF_OPER_UP] = "up", | |
2680 | }; | |
2681 | ||
2682 | DEFINE_STRING_TABLE_LOOKUP_TO_STRING(kernel_operstate, int); |