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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" |
e2341b6b | 29 | #include "glyph-util.h" |
3ae6b3bf | 30 | #include "logarithm.h" |
ef118d00 | 31 | #include "missing_network.h" |
cf1d700d | 32 | #include "netlink-util.h" |
c6f7c917 | 33 | #include "network-internal.h" |
fb486c90 | 34 | #include "networkd-address-label.h" |
093e3533 | 35 | #include "networkd-address.h" |
9671ae9d | 36 | #include "networkd-bridge-fdb.h" |
ff9e0783 | 37 | #include "networkd-bridge-mdb.h" |
3ddcbeea | 38 | #include "networkd-can.h" |
d5ebcf65 | 39 | #include "networkd-dhcp-prefix-delegation.h" |
8fcf1d61 | 40 | #include "networkd-dhcp-server.h" |
ca5ad760 YW |
41 | #include "networkd-dhcp4.h" |
42 | #include "networkd-dhcp6.h" | |
76a86ffd | 43 | #include "networkd-ipv4acd.h" |
ca5ad760 | 44 | #include "networkd-ipv4ll.h" |
76c5a0f2 | 45 | #include "networkd-ipv6-proxy-ndp.h" |
6a1af3d4 YW |
46 | #include "networkd-link-bus.h" |
47 | #include "networkd-link.h" | |
8e1ad1ea | 48 | #include "networkd-lldp-tx.h" |
23f53b99 | 49 | #include "networkd-manager.h" |
1e7a0e21 | 50 | #include "networkd-ndisc.h" |
e4a71bf3 | 51 | #include "networkd-neighbor.h" |
75156ccb | 52 | #include "networkd-nexthop.h" |
19d9a5ad | 53 | #include "networkd-queue.h" |
7465dd22 | 54 | #include "networkd-radv.h" |
3b6a3bde | 55 | #include "networkd-route.h" |
bce67bbe | 56 | #include "networkd-routing-policy-rule.h" |
0fa8ee6c | 57 | #include "networkd-setlink.h" |
19d9a5ad | 58 | #include "networkd-sriov.h" |
3b5a4fc6 | 59 | #include "networkd-state-file.h" |
19d9a5ad | 60 | #include "networkd-sysctl.h" |
986b2514 | 61 | #include "networkd-wifi.h" |
cf1d700d TG |
62 | #include "set.h" |
63 | #include "socket-util.h" | |
15a5e950 | 64 | #include "stdio-util.h" |
8b43440b | 65 | #include "string-table.h" |
51517f9e | 66 | #include "strv.h" |
34658df2 | 67 | #include "tc.h" |
e4de7287 | 68 | #include "tmpfile-util.h" |
af7a86b8 | 69 | #include "tuntap.h" |
299ad32d | 70 | #include "udev-util.h" |
737f1405 | 71 | #include "vrf.h" |
fc2f9534 | 72 | |
5e0534f1 | 73 | bool link_ipv6_enabled(Link *link) { |
439689c6 SS |
74 | assert(link); |
75 | ||
76 | if (!socket_ipv6_is_supported()) | |
77 | return false; | |
78 | ||
5fb5fae9 | 79 | if (link->iftype == ARPHRD_CAN) |
2b00a4e0 TY |
80 | return false; |
81 | ||
5fb5fae9 YW |
82 | if (!link->network) |
83 | return false; | |
84 | ||
85 | if (link->network->bond) | |
af9ba57a YW |
86 | return false; |
87 | ||
bd7e0a3f | 88 | if (link_may_have_ipv6ll(link, /* check_multicast = */ false)) |
adfeee49 YW |
89 | return true; |
90 | ||
91 | if (network_has_static_ipv6_configurations(link->network)) | |
92 | return true; | |
93 | ||
94 | return false; | |
439689c6 SS |
95 | } |
96 | ||
e33232d4 | 97 | static bool link_is_ready_to_configure_one(Link *link, bool allow_unmanaged) { |
7191a57a YW |
98 | assert(link); |
99 | ||
d8d4db58 YW |
100 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED, LINK_STATE_UNMANAGED)) |
101 | return false; | |
102 | ||
2fd3908b YW |
103 | if (!link->network) |
104 | return allow_unmanaged; | |
7191a57a | 105 | |
baa95d22 YW |
106 | if (!link->network->configure_without_carrier) { |
107 | if (link->set_flags_messages > 0) | |
108 | return false; | |
109 | ||
110 | if (!link_has_carrier(link)) | |
111 | return false; | |
112 | } | |
7191a57a | 113 | |
0fa8ee6c YW |
114 | if (link->set_link_messages > 0) |
115 | return false; | |
116 | ||
112a0972 YW |
117 | if (!link->activated) |
118 | return false; | |
112a0972 | 119 | |
7191a57a YW |
120 | return true; |
121 | } | |
122 | ||
e33232d4 YW |
123 | bool link_is_ready_to_configure(Link *link, bool allow_unmanaged) { |
124 | return check_ready_for_all_sr_iov_ports(link, allow_unmanaged, link_is_ready_to_configure_one); | |
125 | } | |
126 | ||
15761549 YW |
127 | void link_ntp_settings_clear(Link *link) { |
128 | link->ntp = strv_free(link->ntp); | |
129 | } | |
130 | ||
131 | void link_dns_settings_clear(Link *link) { | |
f5fbe71d | 132 | if (link->n_dns != UINT_MAX) |
e77bd3fd YW |
133 | for (unsigned i = 0; i < link->n_dns; i++) |
134 | in_addr_full_free(link->dns[i]); | |
15761549 | 135 | link->dns = mfree(link->dns); |
f5fbe71d | 136 | link->n_dns = UINT_MAX; |
15761549 | 137 | |
6e4571f0 YW |
138 | link->search_domains = ordered_set_free(link->search_domains); |
139 | link->route_domains = ordered_set_free(link->route_domains); | |
15761549 YW |
140 | |
141 | link->dns_default_route = -1; | |
142 | link->llmnr = _RESOLVE_SUPPORT_INVALID; | |
143 | link->mdns = _RESOLVE_SUPPORT_INVALID; | |
144 | link->dnssec_mode = _DNSSEC_MODE_INVALID; | |
145 | link->dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID; | |
146 | ||
147 | link->dnssec_negative_trust_anchors = set_free_free(link->dnssec_negative_trust_anchors); | |
148 | } | |
149 | ||
1a6bb31f YW |
150 | static void link_free_engines(Link *link) { |
151 | if (!link) | |
152 | return; | |
153 | ||
154 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); | |
b3fac19f | 155 | |
1a6bb31f YW |
156 | link->dhcp_client = sd_dhcp_client_unref(link->dhcp_client); |
157 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); | |
e49bad01 | 158 | link->dhcp4_6rd_tunnel_name = mfree(link->dhcp4_6rd_tunnel_name); |
1a6bb31f | 159 | |
35778343 | 160 | link->lldp_rx = sd_lldp_rx_unref(link->lldp_rx); |
c01b9b87 | 161 | link->lldp_tx = sd_lldp_tx_unref(link->lldp_tx); |
1a6bb31f | 162 | |
1a6bb31f | 163 | link->ipv4ll = sd_ipv4ll_unref(link->ipv4ll); |
b3fac19f | 164 | |
1a6bb31f | 165 | link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); |
1633c457 | 166 | link->dhcp6_lease = sd_dhcp6_lease_unref(link->dhcp6_lease); |
b3fac19f | 167 | |
1a6bb31f | 168 | link->ndisc = sd_ndisc_unref(link->ndisc); |
b3fac19f YW |
169 | link->ndisc_expire = sd_event_source_disable_unref(link->ndisc_expire); |
170 | ndisc_flush(link); | |
171 | ||
1a6bb31f YW |
172 | link->radv = sd_radv_unref(link->radv); |
173 | } | |
174 | ||
8301aa0b | 175 | static Link *link_free(Link *link) { |
8301aa0b | 176 | assert(link); |
f579559b | 177 | |
15761549 YW |
178 | link_ntp_settings_clear(link); |
179 | link_dns_settings_clear(link); | |
180 | ||
8eec0b9d | 181 | link->routes = set_free(link->routes); |
8eec0b9d | 182 | link->nexthops = set_free(link->nexthops); |
8eec0b9d | 183 | link->neighbors = set_free(link->neighbors); |
8eec0b9d | 184 | link->addresses = set_free(link->addresses); |
3a67b8bb YW |
185 | link->qdiscs = set_free(link->qdiscs); |
186 | link->tclasses = set_free(link->tclasses); | |
adda1ed9 | 187 | |
a27588d4 | 188 | link->dhcp_pd_prefixes = set_free(link->dhcp_pd_prefixes); |
4b409e85 | 189 | |
1a6bb31f | 190 | link_free_engines(link); |
49699bac | 191 | |
b0ff6dea | 192 | set_free(link->sr_iov_virt_port_ifindices); |
c166a070 | 193 | free(link->ifname); |
572b21d9 | 194 | strv_free(link->alternative_names); |
ceac4078 | 195 | free(link->kind); |
8d968fdd | 196 | free(link->ssid); |
6706ce2f | 197 | free(link->previous_ssid); |
c643bda5 | 198 | free(link->driver); |
6cad256d | 199 | |
a34e58d4 YW |
200 | unlink_and_free(link->lease_file); |
201 | unlink_and_free(link->lldp_file); | |
202 | unlink_and_free(link->state_file); | |
c166a070 | 203 | |
8de56fb3 | 204 | sd_device_unref(link->dev); |
9aa2585e | 205 | netdev_unref(link->netdev); |
b5db00e5 | 206 | |
0d4ad91d | 207 | hashmap_free(link->bound_to_links); |
0d4ad91d AR |
208 | hashmap_free(link->bound_by_links); |
209 | ||
5f707e12 | 210 | set_free_with_destructor(link->slaves, link_unref); |
033295c1 | 211 | |
c9c908a6 YW |
212 | network_unref(link->network); |
213 | ||
6706ce2f YW |
214 | sd_event_source_disable_unref(link->carrier_lost_timer); |
215 | ||
8301aa0b | 216 | return mfree(link); |
14b746f7 TG |
217 | } |
218 | ||
8301aa0b | 219 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 220 | |
6eab614d | 221 | int link_get_by_index(Manager *m, int ifindex, Link **ret) { |
11a7f229 | 222 | Link *link; |
11a7f229 TG |
223 | |
224 | assert(m); | |
e856ed00 | 225 | assert(ifindex > 0); |
11a7f229 | 226 | |
6eab614d | 227 | link = hashmap_get(m->links_by_index, INT_TO_PTR(ifindex)); |
11a7f229 TG |
228 | if (!link) |
229 | return -ENODEV; | |
230 | ||
0b54c870 YW |
231 | if (ret) |
232 | *ret = link; | |
233 | return 0; | |
234 | } | |
235 | ||
236 | int link_get_by_name(Manager *m, const char *ifname, Link **ret) { | |
237 | Link *link; | |
238 | ||
239 | assert(m); | |
240 | assert(ifname); | |
11a7f229 | 241 | |
0b54c870 YW |
242 | link = hashmap_get(m->links_by_name, ifname); |
243 | if (!link) | |
244 | return -ENODEV; | |
245 | ||
246 | if (ret) | |
247 | *ret = link; | |
11a7f229 TG |
248 | return 0; |
249 | } | |
250 | ||
fe321d45 YW |
251 | int link_get_by_hw_addr(Manager *m, const struct hw_addr_data *hw_addr, Link **ret) { |
252 | Link *link; | |
253 | ||
254 | assert(m); | |
255 | assert(hw_addr); | |
256 | ||
257 | link = hashmap_get(m->links_by_hw_addr, hw_addr); | |
258 | if (!link) | |
259 | return -ENODEV; | |
260 | ||
261 | if (ret) | |
262 | *ret = link; | |
263 | return 0; | |
264 | } | |
265 | ||
81357285 YW |
266 | int link_get_master(Link *link, Link **ret) { |
267 | assert(link); | |
268 | assert(link->manager); | |
269 | assert(ret); | |
270 | ||
271 | if (link->master_ifindex <= 0 || link->master_ifindex == link->ifindex) | |
272 | return -ENODEV; | |
273 | ||
6eab614d | 274 | return link_get_by_index(link->manager, link->master_ifindex, ret); |
81357285 YW |
275 | } |
276 | ||
af9ba57a | 277 | void link_set_state(Link *link, LinkState state) { |
e331e246 TG |
278 | assert(link); |
279 | ||
280 | if (link->state == state) | |
281 | return; | |
282 | ||
0beb9542 YW |
283 | log_link_debug(link, "State changed: %s -> %s", |
284 | link_state_to_string(link->state), | |
285 | link_state_to_string(state)); | |
286 | ||
e331e246 TG |
287 | link->state = state; |
288 | ||
289 | link_send_changed(link, "AdministrativeState", NULL); | |
9092113d | 290 | link_dirty(link); |
e331e246 TG |
291 | } |
292 | ||
2a99eed0 | 293 | int link_stop_engines(Link *link, bool may_keep_dhcp) { |
111bb8f9 TG |
294 | int r = 0, k; |
295 | ||
296 | assert(link); | |
297 | assert(link->manager); | |
298 | assert(link->manager->event); | |
299 | ||
80060352 ZJS |
300 | bool keep_dhcp = may_keep_dhcp && |
301 | link->network && | |
76a86ffd | 302 | !link->network->dhcp_send_decline && /* IPv4 ACD for the DHCPv4 address is running. */ |
80060352 ZJS |
303 | (link->manager->restarting || |
304 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP_ON_STOP)); | |
305 | ||
84add3cd | 306 | if (!keep_dhcp) { |
111bb8f9 | 307 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 308 | if (k < 0) |
36c7d709 | 309 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
310 | } |
311 | ||
2a99eed0 YW |
312 | k = sd_dhcp_server_stop(link->dhcp_server); |
313 | if (k < 0) | |
314 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 server: %m"); | |
315 | ||
35778343 | 316 | k = sd_lldp_rx_stop(link->lldp_rx); |
9cc65242 | 317 | if (k < 0) |
c01b9b87 YW |
318 | r = log_link_warning_errno(link, k, "Could not stop LLDP Rx: %m"); |
319 | ||
320 | k = sd_lldp_tx_stop(link->lldp_tx); | |
321 | if (k < 0) | |
322 | r = log_link_warning_errno(link, k, "Could not stop LLDP Tx: %m"); | |
9cc65242 | 323 | |
84add3cd YW |
324 | k = sd_ipv4ll_stop(link->ipv4ll); |
325 | if (k < 0) | |
326 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); | |
dd43110f | 327 | |
76a86ffd | 328 | k = ipv4acd_stop(link); |
2488e4d9 YW |
329 | if (k < 0) |
330 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client: %m"); | |
051e77ca | 331 | |
84add3cd YW |
332 | k = sd_dhcp6_client_stop(link->dhcp6_client); |
333 | if (k < 0) | |
334 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); | |
4138fb2c | 335 | |
a27588d4 | 336 | k = dhcp_pd_remove(link, /* only_marked = */ false); |
2ffd6d73 YW |
337 | if (k < 0) |
338 | r = log_link_warning_errno(link, k, "Could not remove DHCPv6 PD addresses and routes: %m"); | |
1633c457 | 339 | |
77302468 | 340 | k = ndisc_stop(link); |
84add3cd YW |
341 | if (k < 0) |
342 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); | |
4138fb2c | 343 | |
259c65f3 YW |
344 | ndisc_flush(link); |
345 | ||
84add3cd YW |
346 | k = sd_radv_stop(link->radv); |
347 | if (k < 0) | |
348 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
7465dd22 | 349 | |
111bb8f9 TG |
350 | return r; |
351 | } | |
352 | ||
b22d8a00 | 353 | void link_enter_failed(Link *link) { |
ef1ba606 | 354 | assert(link); |
f882c247 | 355 | |
370e9930 | 356 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
357 | return; |
358 | ||
6a7a4e4d | 359 | log_link_warning(link, "Failed"); |
449f7554 | 360 | |
e331e246 | 361 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 362 | |
2a99eed0 | 363 | (void) link_stop_engines(link, false); |
f882c247 TG |
364 | } |
365 | ||
6accfd31 DA |
366 | void link_check_ready(Link *link) { |
367 | Address *a; | |
6accfd31 DA |
368 | |
369 | assert(link); | |
370 | ||
5f58af25 YW |
371 | if (link->state == LINK_STATE_CONFIGURED) |
372 | return; | |
373 | ||
d19b9939 YW |
374 | if (link->state != LINK_STATE_CONFIGURING) |
375 | return (void) log_link_debug(link, "%s(): link is in %s state.", __func__, link_state_to_string(link->state)); | |
6accfd31 DA |
376 | |
377 | if (!link->network) | |
a7f07cbe | 378 | return (void) log_link_debug(link, "%s(): link is unmanaged.", __func__); |
6accfd31 | 379 | |
7558f9e7 YW |
380 | if (!link->tc_configured) |
381 | return (void) log_link_debug(link, "%s(): traffic controls are not configured.", __func__); | |
600b7898 | 382 | |
a7f07cbe YW |
383 | if (link->set_link_messages > 0) |
384 | return (void) log_link_debug(link, "%s(): link layer is configuring.", __func__); | |
385 | ||
386 | if (!link->activated) | |
387 | return (void) log_link_debug(link, "%s(): link is not activated.", __func__); | |
388 | ||
7558f9e7 YW |
389 | if (link->iftype == ARPHRD_CAN) { |
390 | /* let's shortcut things for CAN which doesn't need most of checks below. */ | |
391 | link_set_state(link, LINK_STATE_CONFIGURED); | |
392 | return; | |
393 | } | |
394 | ||
879377ca YW |
395 | if (!link->stacked_netdevs_created) |
396 | return (void) log_link_debug(link, "%s(): stacked netdevs are not created.", __func__); | |
397 | ||
76c5a0f2 | 398 | if (!link->static_addresses_configured) |
d19b9939 | 399 | return (void) log_link_debug(link, "%s(): static addresses are not configured.", __func__); |
6accfd31 | 400 | |
90e74a66 | 401 | SET_FOREACH(a, link->addresses) |
c71384a9 ZJS |
402 | if (!address_is_ready(a)) |
403 | return (void) log_link_debug(link, "%s(): address %s is not ready.", __func__, | |
404 | IN_ADDR_PREFIX_TO_STRING(a->family, &a->in_addr, a->prefixlen)); | |
6aa5773b | 405 | |
354bc760 YW |
406 | if (!link->static_address_labels_configured) |
407 | return (void) log_link_debug(link, "%s(): static address labels are not configured.", __func__); | |
408 | ||
e5b35bf6 YW |
409 | if (!link->static_bridge_fdb_configured) |
410 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
411 | ||
ff9e0783 YW |
412 | if (!link->static_bridge_mdb_configured) |
413 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
414 | ||
fdeba3f5 YW |
415 | if (!link->static_ipv6_proxy_ndp_configured) |
416 | return (void) log_link_debug(link, "%s(): static IPv6 proxy NDP addresses are not configured.", __func__); | |
417 | ||
40ca350e YW |
418 | if (!link->static_neighbors_configured) |
419 | return (void) log_link_debug(link, "%s(): static neighbors are not configured.", __func__); | |
420 | ||
d19b9939 YW |
421 | if (!link->static_nexthops_configured) |
422 | return (void) log_link_debug(link, "%s(): static nexthops are not configured.", __func__); | |
c16c7808 | 423 | |
76c5a0f2 YW |
424 | if (!link->static_routes_configured) |
425 | return (void) log_link_debug(link, "%s(): static routes are not configured.", __func__); | |
426 | ||
0e5ef6be | 427 | if (!link->static_routing_policy_rules_configured) |
d19b9939 | 428 | return (void) log_link_debug(link, "%s(): static routing policy rules are not configured.", __func__); |
6accfd31 | 429 | |
d19b9939 YW |
430 | if (!link->sr_iov_configured) |
431 | return (void) log_link_debug(link, "%s(): SR-IOV is not configured.", __func__); | |
518cd6b5 | 432 | |
4bcb8625 YW |
433 | /* IPv6LL is assigned after the link gains its carrier. */ |
434 | if (!link->network->configure_without_carrier && | |
435 | link_ipv6ll_enabled(link) && | |
436 | !in6_addr_is_set(&link->ipv6ll_address)) | |
437 | return (void) log_link_debug(link, "%s(): IPv6LL is not configured yet.", __func__); | |
438 | ||
3b6a3bde YW |
439 | bool has_dynamic_address = false; |
440 | SET_FOREACH(a, link->addresses) { | |
441 | if (address_is_marked(a)) | |
442 | continue; | |
443 | if (!address_exists(a)) | |
444 | continue; | |
445 | if (IN_SET(a->source, | |
d9098371 YW |
446 | NETWORK_CONFIG_SOURCE_IPV4LL, |
447 | NETWORK_CONFIG_SOURCE_DHCP4, | |
448 | NETWORK_CONFIG_SOURCE_DHCP6, | |
a27588d4 | 449 | NETWORK_CONFIG_SOURCE_DHCP_PD, |
d9098371 | 450 | NETWORK_CONFIG_SOURCE_NDISC)) { |
3b6a3bde | 451 | has_dynamic_address = true; |
4bcb8625 YW |
452 | break; |
453 | } | |
3b6a3bde | 454 | } |
50550722 | 455 | |
3b6a3bde | 456 | if ((link_ipv4ll_enabled(link) || link_dhcp4_enabled(link) || link_dhcp6_with_address_enabled(link) || |
a27588d4 | 457 | (link_dhcp_pd_is_enabled(link) && link->network->dhcp_pd_assign)) && !has_dynamic_address) |
4bcb8625 | 458 | /* When DHCP[46] or IPv4LL is enabled, at least one address is acquired by them. */ |
a27588d4 | 459 | 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 |
460 | |
461 | /* Ignore NDisc when ConfigureWithoutCarrier= is enabled, as IPv6AcceptRA= is enabled by default. */ | |
3b6a3bde | 462 | if (link_ipv4ll_enabled(link) || link_dhcp4_enabled(link) || |
a27588d4 | 463 | link_dhcp6_enabled(link) || link_dhcp_pd_is_enabled(link) || |
3b6a3bde YW |
464 | (!link->network->configure_without_carrier && link_ipv6_accept_ra_enabled(link))) { |
465 | ||
466 | if (!link->ipv4ll_address_configured && !link->dhcp4_configured && | |
a27588d4 | 467 | !link->dhcp6_configured && !link->dhcp_pd_configured && !link->ndisc_configured) |
4bcb8625 YW |
468 | /* When DHCP[46], NDisc, or IPv4LL is enabled, at least one protocol must be finished. */ |
469 | return (void) log_link_debug(link, "%s(): dynamic addresses or routes are not configured.", __func__); | |
470 | ||
a27588d4 | 471 | log_link_debug(link, "%s(): IPv4LL:%s DHCPv4:%s DHCPv6:%s DHCP-PD:%s NDisc:%s", |
4bcb8625 | 472 | __func__, |
4bcb8625 | 473 | yes_no(link->ipv4ll_address_configured), |
3b6a3bde YW |
474 | yes_no(link->dhcp4_configured), |
475 | yes_no(link->dhcp6_configured), | |
a27588d4 | 476 | yes_no(link->dhcp_pd_configured), |
3b6a3bde | 477 | yes_no(link->ndisc_configured)); |
463797c1 | 478 | } |
6accfd31 | 479 | |
29836c16 | 480 | link_set_state(link, LINK_STATE_CONFIGURED); |
6accfd31 DA |
481 | } |
482 | ||
97108953 | 483 | static int link_request_static_configs(Link *link) { |
f882c247 TG |
484 | int r; |
485 | ||
486 | assert(link); | |
487 | assert(link->network); | |
f5be5601 | 488 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 489 | |
354bc760 | 490 | r = link_request_static_addresses(link); |
0e5ef6be YW |
491 | if (r < 0) |
492 | return r; | |
493 | ||
354bc760 | 494 | r = link_request_static_address_labels(link); |
f3ef324d YW |
495 | if (r < 0) |
496 | return r; | |
e4a71bf3 | 497 | |
e5b35bf6 YW |
498 | r = link_request_static_bridge_fdb(link); |
499 | if (r < 0) | |
500 | return r; | |
501 | ||
9a038aac YW |
502 | r = link_request_static_bridge_mdb(link); |
503 | if (r < 0) | |
504 | return r; | |
505 | ||
fdeba3f5 YW |
506 | r = link_request_static_ipv6_proxy_ndp_addresses(link); |
507 | if (r < 0) | |
508 | return r; | |
509 | ||
40ca350e | 510 | r = link_request_static_neighbors(link); |
682c65b0 YW |
511 | if (r < 0) |
512 | return r; | |
bd6379ec | 513 | |
76c5a0f2 | 514 | r = link_request_static_nexthops(link, false); |
fe2bc17c YW |
515 | if (r < 0) |
516 | return r; | |
f882c247 | 517 | |
76c5a0f2 YW |
518 | r = link_request_static_routes(link, false); |
519 | if (r < 0) | |
520 | return r; | |
521 | ||
522 | r = link_request_static_routing_policy_rules(link); | |
5ae0fb7f YW |
523 | if (r < 0) |
524 | return r; | |
d4cdbea5 | 525 | |
f882c247 TG |
526 | return 0; |
527 | } | |
528 | ||
1187fc33 YW |
529 | static int link_request_stacked_netdevs(Link *link) { |
530 | NetDev *netdev; | |
e16e4b3b DS |
531 | int r; |
532 | ||
533 | assert(link); | |
534 | ||
1187fc33 | 535 | link->stacked_netdevs_created = false; |
e16e4b3b | 536 | |
1187fc33 | 537 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
b14686ff | 538 | r = link_request_stacked_netdev(link, netdev); |
1187fc33 YW |
539 | if (r < 0) |
540 | return r; | |
541 | } | |
e16e4b3b | 542 | |
bb916f35 | 543 | if (link->create_stacked_netdev_messages == 0) { |
1187fc33 | 544 | link->stacked_netdevs_created = true; |
bb916f35 YW |
545 | link_check_ready(link); |
546 | } | |
e16e4b3b DS |
547 | |
548 | return 0; | |
549 | } | |
550 | ||
8566df79 | 551 | static int link_acquire_dynamic_ipv6_conf(Link *link) { |
e7ab854c TG |
552 | int r; |
553 | ||
554 | assert(link); | |
555 | ||
0f96a823 YW |
556 | r = radv_start(link); |
557 | if (r < 0) | |
558 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Advertisement engine: %m"); | |
7465dd22 | 559 | |
294f129b YW |
560 | r = ndisc_start(link); |
561 | if (r < 0) | |
562 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Discovery: %m"); | |
cd305af1 | 563 | |
294f129b YW |
564 | r = dhcp6_start(link); |
565 | if (r < 0) | |
566 | return log_link_warning_errno(link, r, "Failed to start DHCPv6 client: %m"); | |
cd305af1 | 567 | |
e7ab854c TG |
568 | return 0; |
569 | } | |
570 | ||
8566df79 | 571 | static int link_acquire_dynamic_ipv4_conf(Link *link) { |
ff254138 TG |
572 | int r; |
573 | ||
574 | assert(link); | |
ff254138 TG |
575 | assert(link->manager); |
576 | assert(link->manager->event); | |
577 | ||
0107b769 | 578 | if (link->dhcp_client) { |
294f129b | 579 | r = dhcp4_start(link); |
0107b769 | 580 | if (r < 0) |
294f129b | 581 | return log_link_warning_errno(link, r, "Failed to start DHCPv4 client: %m"); |
0107b769 | 582 | |
ccffa166 | 583 | log_link_debug(link, "Acquiring DHCPv4 lease."); |
5c1d3fc9 | 584 | |
ccffa166 | 585 | } else if (link->ipv4ll) { |
59c27231 AK |
586 | if (in4_addr_is_set(&link->network->ipv4ll_start_address)) { |
587 | r = sd_ipv4ll_set_address(link->ipv4ll, &link->network->ipv4ll_start_address); | |
588 | if (r < 0) | |
589 | return log_link_warning_errno(link, r, "Could not set IPv4 link-local start address: %m"); | |
590 | } | |
591 | ||
5c1d3fc9 | 592 | r = sd_ipv4ll_start(link->ipv4ll); |
6a7a4e4d LP |
593 | if (r < 0) |
594 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
ccffa166 YW |
595 | |
596 | log_link_debug(link, "Acquiring IPv4 link-local address."); | |
5c1d3fc9 UTL |
597 | } |
598 | ||
ab486ef4 YW |
599 | if (link->dhcp_server) { |
600 | r = sd_dhcp_server_start(link->dhcp_server); | |
601 | if (r < 0) | |
602 | return log_link_warning_errno(link, r, "Could not start DHCP server: %m"); | |
603 | } | |
604 | ||
76a86ffd YW |
605 | r = ipv4acd_start(link); |
606 | if (r < 0) | |
607 | return log_link_warning_errno(link, r, "Could not start IPv4 ACD client: %m"); | |
608 | ||
6fc25497 SS |
609 | return 0; |
610 | } | |
611 | ||
8566df79 | 612 | static int link_acquire_dynamic_conf(Link *link) { |
6fc25497 SS |
613 | int r; |
614 | ||
615 | assert(link); | |
0f96a823 | 616 | assert(link->network); |
6fc25497 | 617 | |
8566df79 | 618 | r = link_acquire_dynamic_ipv4_conf(link); |
6fc25497 SS |
619 | if (r < 0) |
620 | return r; | |
621 | ||
94876904 | 622 | if (in6_addr_is_set(&link->ipv6ll_address)) { |
8566df79 | 623 | r = link_acquire_dynamic_ipv6_conf(link); |
6fc25497 SS |
624 | if (r < 0) |
625 | return r; | |
626 | } | |
627 | ||
a27588d4 | 628 | if (!link_radv_enabled(link) || !link->network->dhcp_pd_announce) { |
0f96a823 YW |
629 | /* DHCPv6PD downstream does not require IPv6LL address. But may require RADV to be |
630 | * configured, and RADV may not be configured yet here. Only acquire subnet prefix when | |
631 | * RADV is disabled, or the announcement of the prefix is disabled. Otherwise, the | |
632 | * below will be called in radv_start(). */ | |
a27588d4 | 633 | r = dhcp_request_prefix_delegation(link); |
0f96a823 | 634 | if (r < 0) |
a27588d4 | 635 | return log_link_warning_errno(link, r, "Failed to request DHCP delegated subnet prefix: %m"); |
0f96a823 YW |
636 | } |
637 | ||
c01b9b87 YW |
638 | if (link->lldp_tx) { |
639 | r = sd_lldp_tx_start(link->lldp_tx); | |
640 | if (r < 0) | |
641 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
642 | } | |
8e1ad1ea | 643 | |
35778343 YW |
644 | if (link->lldp_rx) { |
645 | r = sd_lldp_rx_start(link->lldp_rx); | |
f8549910 YW |
646 | if (r < 0) |
647 | return log_link_warning_errno(link, r, "Failed to start LLDP client: %m"); | |
648 | } | |
649 | ||
ff254138 TG |
650 | return 0; |
651 | } | |
652 | ||
7657ec3e | 653 | int link_ipv6ll_gained(Link *link) { |
0c9ee5d5 | 654 | int r; |
deb2e523 | 655 | |
0c9ee5d5 | 656 | assert(link); |
deb2e523 | 657 | |
0c9ee5d5 | 658 | log_link_info(link, "Gained IPv6LL"); |
deb2e523 | 659 | |
7657ec3e YW |
660 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) |
661 | return 0; | |
0c9ee5d5 | 662 | |
7657ec3e YW |
663 | r = link_acquire_dynamic_ipv6_conf(link); |
664 | if (r < 0) | |
665 | return r; | |
0c9ee5d5 | 666 | |
7657ec3e | 667 | link_check_ready(link); |
0c9ee5d5 | 668 | return 0; |
deb2e523 TG |
669 | } |
670 | ||
112a0972 | 671 | int link_handle_bound_to_list(Link *link) { |
0d4ad91d AR |
672 | bool required_up = false; |
673 | bool link_is_up = false; | |
852a3916 | 674 | Link *l; |
0d4ad91d AR |
675 | |
676 | assert(link); | |
677 | ||
ad82f0c3 YW |
678 | /* If at least one interface in bound_to_links has carrier, then make this interface up. |
679 | * If all interfaces in bound_to_links do not, then make this interface down. */ | |
680 | ||
0d4ad91d AR |
681 | if (hashmap_isempty(link->bound_to_links)) |
682 | return 0; | |
683 | ||
684 | if (link->flags & IFF_UP) | |
685 | link_is_up = true; | |
686 | ||
852a3916 | 687 | HASHMAP_FOREACH(l, link->bound_to_links) |
0d4ad91d AR |
688 | if (link_has_carrier(l)) { |
689 | required_up = true; | |
690 | break; | |
691 | } | |
692 | ||
852a3916 | 693 | if (!required_up && link_is_up) |
68f52063 | 694 | return link_request_to_bring_up_or_down(link, /* up = */ false); |
852a3916 | 695 | if (required_up && !link_is_up) |
68f52063 | 696 | return link_request_to_bring_up_or_down(link, /* up = */ true); |
0d4ad91d AR |
697 | |
698 | return 0; | |
699 | } | |
700 | ||
701 | static int link_handle_bound_by_list(Link *link) { | |
0d4ad91d AR |
702 | Link *l; |
703 | int r; | |
704 | ||
705 | assert(link); | |
706 | ||
ad82f0c3 YW |
707 | /* Update up or down state of interfaces which depend on this interface's carrier state. */ |
708 | ||
0d4ad91d AR |
709 | if (hashmap_isempty(link->bound_by_links)) |
710 | return 0; | |
711 | ||
852a3916 | 712 | HASHMAP_FOREACH(l, link->bound_by_links) { |
0d4ad91d AR |
713 | r = link_handle_bound_to_list(l); |
714 | if (r < 0) | |
715 | return r; | |
716 | } | |
717 | ||
718 | return 0; | |
719 | } | |
720 | ||
721 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
722 | int r; | |
723 | ||
724 | assert(link); | |
725 | assert(carrier); | |
726 | ||
727 | if (link == carrier) | |
728 | return 0; | |
729 | ||
730 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
731 | return 0; | |
732 | ||
190b3b5c | 733 | r = hashmap_ensure_put(h, NULL, INT_TO_PTR(carrier->ifindex), carrier); |
0d4ad91d AR |
734 | if (r < 0) |
735 | return r; | |
736 | ||
9092113d YW |
737 | link_dirty(link); |
738 | ||
0d4ad91d AR |
739 | return 0; |
740 | } | |
741 | ||
742 | static int link_new_bound_by_list(Link *link) { | |
743 | Manager *m; | |
744 | Link *carrier; | |
0d4ad91d | 745 | int r; |
0d4ad91d AR |
746 | |
747 | assert(link); | |
748 | assert(link->manager); | |
749 | ||
750 | m = link->manager; | |
751 | ||
6eab614d | 752 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
0d4ad91d AR |
753 | if (!carrier->network) |
754 | continue; | |
755 | ||
756 | if (strv_isempty(carrier->network->bind_carrier)) | |
757 | continue; | |
758 | ||
191a3f16 | 759 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname)) { |
0d4ad91d AR |
760 | r = link_put_carrier(link, carrier, &link->bound_by_links); |
761 | if (r < 0) | |
762 | return r; | |
0d4ad91d AR |
763 | } |
764 | } | |
765 | ||
90e74a66 | 766 | HASHMAP_FOREACH(carrier, link->bound_by_links) { |
0d4ad91d AR |
767 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
768 | if (r < 0) | |
769 | return r; | |
0d4ad91d AR |
770 | } |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
775 | static int link_new_bound_to_list(Link *link) { | |
776 | Manager *m; | |
777 | Link *carrier; | |
0d4ad91d | 778 | int r; |
0d4ad91d AR |
779 | |
780 | assert(link); | |
781 | assert(link->manager); | |
782 | ||
783 | if (!link->network) | |
784 | return 0; | |
785 | ||
786 | if (strv_isempty(link->network->bind_carrier)) | |
787 | return 0; | |
788 | ||
789 | m = link->manager; | |
790 | ||
6eab614d | 791 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
191a3f16 | 792 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname)) { |
0d4ad91d AR |
793 | r = link_put_carrier(link, carrier, &link->bound_to_links); |
794 | if (r < 0) | |
795 | return r; | |
0d4ad91d AR |
796 | } |
797 | } | |
798 | ||
852a3916 | 799 | HASHMAP_FOREACH(carrier, link->bound_to_links) { |
0d4ad91d AR |
800 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); |
801 | if (r < 0) | |
802 | return r; | |
0d4ad91d AR |
803 | } |
804 | ||
805 | return 0; | |
806 | } | |
807 | ||
0d4ad91d | 808 | static void link_free_bound_to_list(Link *link) { |
9092113d | 809 | bool updated = false; |
0d4ad91d | 810 | Link *bound_to; |
0d4ad91d | 811 | |
9092113d YW |
812 | assert(link); |
813 | ||
814 | while ((bound_to = hashmap_steal_first(link->bound_to_links))) { | |
815 | updated = true; | |
0d4ad91d AR |
816 | |
817 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 818 | link_dirty(bound_to); |
0d4ad91d AR |
819 | } |
820 | ||
9092113d YW |
821 | if (updated) |
822 | link_dirty(link); | |
0d4ad91d AR |
823 | } |
824 | ||
825 | static void link_free_bound_by_list(Link *link) { | |
9092113d | 826 | bool updated = false; |
0d4ad91d | 827 | Link *bound_by; |
0d4ad91d | 828 | |
9092113d YW |
829 | assert(link); |
830 | ||
831 | while ((bound_by = hashmap_steal_first(link->bound_by_links))) { | |
832 | updated = true; | |
0d4ad91d AR |
833 | |
834 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 835 | link_dirty(bound_by); |
0d4ad91d AR |
836 | link_handle_bound_to_list(bound_by); |
837 | } | |
838 | } | |
839 | ||
9092113d YW |
840 | if (updated) |
841 | link_dirty(link); | |
0d4ad91d AR |
842 | } |
843 | ||
81357285 | 844 | static int link_append_to_master(Link *link) { |
5f707e12 YW |
845 | Link *master; |
846 | int r; | |
847 | ||
848 | assert(link); | |
5f707e12 | 849 | |
81357285 YW |
850 | /* - The link may have no master. |
851 | * - RTM_NEWLINK message about master interface may not be received yet. */ | |
852 | if (link_get_master(link, &master) < 0) | |
853 | return 0; | |
5f707e12 | 854 | |
de7fef4b | 855 | r = set_ensure_put(&master->slaves, NULL, link); |
38288f0b | 856 | if (r <= 0) |
5f707e12 YW |
857 | return r; |
858 | ||
859 | link_ref(link); | |
860 | return 0; | |
861 | } | |
862 | ||
81357285 | 863 | static void link_drop_from_master(Link *link) { |
5f707e12 YW |
864 | Link *master; |
865 | ||
866 | assert(link); | |
867 | ||
81357285 | 868 | if (!link->manager) |
5f707e12 YW |
869 | return; |
870 | ||
81357285 | 871 | if (link_get_master(link, &master) < 0) |
5f707e12 YW |
872 | return; |
873 | ||
874 | link_unref(set_remove(master->slaves, link)); | |
875 | } | |
876 | ||
56001f02 YW |
877 | static void link_drop_requests(Link *link) { |
878 | Request *req; | |
879 | ||
880 | assert(link); | |
881 | assert(link->manager); | |
882 | ||
883 | ORDERED_SET_FOREACH(req, link->manager->request_queue) | |
884 | if (req->link == link) | |
e26d3d40 | 885 | request_detach(link->manager, req); |
56001f02 YW |
886 | } |
887 | ||
cc2d7efc | 888 | static Link *link_drop(Link *link) { |
63130eb3 | 889 | if (!link) |
cc2d7efc | 890 | return NULL; |
0d4ad91d | 891 | |
63130eb3 YW |
892 | assert(link->manager); |
893 | ||
0d4ad91d AR |
894 | link_set_state(link, LINK_STATE_LINGER); |
895 | ||
63130eb3 YW |
896 | /* Drop all references from other links and manager. Note that async netlink calls may have |
897 | * references to the link, and they will be dropped when we receive replies. */ | |
898 | ||
56001f02 YW |
899 | link_drop_requests(link); |
900 | ||
bb193d2d YW |
901 | link_free_bound_to_list(link); |
902 | link_free_bound_by_list(link); | |
0d4ad91d | 903 | |
b0ff6dea YW |
904 | link_clear_sr_iov_ifindices(link); |
905 | ||
81357285 | 906 | link_drop_from_master(link); |
5f707e12 | 907 | |
4c78dc17 YW |
908 | if (link->state_file) |
909 | (void) unlink(link->state_file); | |
910 | ||
63130eb3 YW |
911 | link_clean(link); |
912 | ||
0b54c870 YW |
913 | STRV_FOREACH(n, link->alternative_names) |
914 | hashmap_remove(link->manager->links_by_name, *n); | |
0b54c870 YW |
915 | hashmap_remove(link->manager->links_by_name, link->ifname); |
916 | ||
fe321d45 | 917 | /* bonding master and its slaves have the same hardware address. */ |
e74f1d07 | 918 | hashmap_remove_value(link->manager->links_by_hw_addr, &link->hw_addr, link); |
fe321d45 | 919 | |
63130eb3 | 920 | /* The following must be called at last. */ |
6eab614d | 921 | assert_se(hashmap_remove(link->manager->links_by_index, INT_TO_PTR(link->ifindex)) == link); |
cc2d7efc | 922 | return link_unref(link); |
0d4ad91d AR |
923 | } |
924 | ||
5e5b137a | 925 | static int link_drop_foreign_config(Link *link) { |
0b81225e YW |
926 | int k, r; |
927 | ||
928 | assert(link); | |
929 | assert(link->manager); | |
5e5b137a | 930 | |
5e3bb5da YW |
931 | /* Drop foreign config, but ignore unmanaged, loopback, or critical interfaces. We do not want |
932 | * to remove loopback address or addresses used for root NFS. */ | |
933 | ||
934 | if (IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) | |
935 | return 0; | |
936 | if (FLAGS_SET(link->flags, IFF_LOOPBACK)) | |
937 | return 0; | |
938 | if (link->network->keep_configuration == KEEP_CONFIGURATION_YES) | |
939 | return 0; | |
940 | ||
e36d601c | 941 | r = link_drop_foreign_routes(link); |
5e5b137a | 942 | |
e36d601c | 943 | k = link_drop_foreign_nexthops(link); |
0b81225e YW |
944 | if (k < 0 && r >= 0) |
945 | r = k; | |
946 | ||
e36d601c | 947 | k = link_drop_foreign_addresses(link); |
0b81225e YW |
948 | if (k < 0 && r >= 0) |
949 | r = k; | |
d1bdafd2 | 950 | |
e36d601c | 951 | k = link_drop_foreign_neighbors(link); |
25b82b6e YW |
952 | if (k < 0 && r >= 0) |
953 | r = k; | |
954 | ||
0b81225e YW |
955 | k = manager_drop_foreign_routing_policy_rules(link->manager); |
956 | if (k < 0 && r >= 0) | |
957 | r = k; | |
958 | ||
959 | return r; | |
5e5b137a TG |
960 | } |
961 | ||
a0e99a37 | 962 | static int link_drop_managed_config(Link *link) { |
0b81225e YW |
963 | int k, r; |
964 | ||
965 | assert(link); | |
966 | assert(link->manager); | |
3104883d | 967 | |
a0e99a37 | 968 | r = link_drop_managed_routes(link); |
3104883d | 969 | |
a0e99a37 | 970 | k = link_drop_managed_nexthops(link); |
0b81225e YW |
971 | if (k < 0 && r >= 0) |
972 | r = k; | |
d1bdafd2 | 973 | |
a0e99a37 | 974 | k = link_drop_managed_addresses(link); |
0b81225e YW |
975 | if (k < 0 && r >= 0) |
976 | r = k; | |
977 | ||
a0e99a37 | 978 | k = link_drop_managed_neighbors(link); |
25b82b6e YW |
979 | if (k < 0 && r >= 0) |
980 | r = k; | |
981 | ||
a0e99a37 | 982 | k = link_drop_managed_routing_policy_rules(link); |
0b81225e YW |
983 | if (k < 0 && r >= 0) |
984 | r = k; | |
3104883d | 985 | |
0b81225e | 986 | return r; |
3104883d SS |
987 | } |
988 | ||
b4564f4e YW |
989 | static void link_foreignize_config(Link *link) { |
990 | assert(link); | |
991 | assert(link->manager); | |
992 | ||
993 | link_foreignize_routes(link); | |
994 | link_foreignize_nexthops(link); | |
995 | link_foreignize_addresses(link); | |
996 | link_foreignize_neighbors(link); | |
997 | link_foreignize_routing_policy_rules(link); | |
998 | } | |
999 | ||
c3b94251 | 1000 | static int link_configure(Link *link) { |
4ecdcb07 YW |
1001 | int r; |
1002 | ||
ef1ba606 | 1003 | assert(link); |
b22d8a00 | 1004 | assert(link->network); |
bd08ce56 | 1005 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 1006 | |
1187fc33 YW |
1007 | link_set_state(link, LINK_STATE_CONFIGURING); |
1008 | ||
3cf58ef3 YW |
1009 | r = link_new_bound_to_list(link); |
1010 | if (r < 0) | |
1011 | return r; | |
1012 | ||
1dec9d81 | 1013 | r = link_request_traffic_control(link); |
4ecdcb07 YW |
1014 | if (r < 0) |
1015 | return r; | |
1016 | ||
7558f9e7 YW |
1017 | if (link->iftype == ARPHRD_CAN) { |
1018 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
1019 | r = link_request_to_set_can(link); | |
1020 | if (r < 0) | |
1021 | return r; | |
1022 | ||
1023 | return link_request_to_activate(link); | |
1024 | } | |
1025 | ||
cb8453cc | 1026 | r = link_request_sr_iov_vfs(link); |
518cd6b5 SS |
1027 | if (r < 0) |
1028 | return r; | |
1029 | ||
5e0534f1 | 1030 | r = link_set_sysctl(link); |
b69c3180 SS |
1031 | if (r < 0) |
1032 | return r; | |
8749cbcd | 1033 | |
d05c332c | 1034 | r = link_request_to_set_mac(link, /* allow_retry = */ true); |
e16e4b3b DS |
1035 | if (r < 0) |
1036 | return r; | |
1037 | ||
72e65e6f YW |
1038 | r = link_request_to_set_ipoib(link); |
1039 | if (r < 0) | |
1040 | return r; | |
1041 | ||
1187fc33 | 1042 | r = link_request_to_set_flags(link); |
e16e4b3b DS |
1043 | if (r < 0) |
1044 | return r; | |
1045 | ||
1187fc33 | 1046 | r = link_request_to_set_group(link); |
99d2baa2 SS |
1047 | if (r < 0) |
1048 | return r; | |
1049 | ||
1187fc33 YW |
1050 | r = link_configure_mtu(link); |
1051 | if (r < 0) | |
1052 | return r; | |
1053 | ||
1054 | r = link_request_to_set_addrgen_mode(link); | |
1055 | if (r < 0) | |
1056 | return r; | |
1057 | ||
1058 | r = link_request_to_set_master(link); | |
1059 | if (r < 0) | |
1060 | return r; | |
1061 | ||
1062 | r = link_request_stacked_netdevs(link); | |
1063 | if (r < 0) | |
1064 | return r; | |
1065 | ||
1066 | r = link_request_to_set_bond(link); | |
1067 | if (r < 0) | |
1068 | return r; | |
1069 | ||
1070 | r = link_request_to_set_bridge(link); | |
1071 | if (r < 0) | |
1072 | return r; | |
1073 | ||
1074 | r = link_request_to_set_bridge_vlan(link); | |
1075 | if (r < 0) | |
1076 | return r; | |
1077 | ||
1078 | r = link_request_to_activate(link); | |
89fe6535 SS |
1079 | if (r < 0) |
1080 | return r; | |
1081 | ||
2ffd6d73 YW |
1082 | r = ipv4ll_configure(link); |
1083 | if (r < 0) | |
1084 | return r; | |
64b21ece | 1085 | |
ccffa166 | 1086 | r = link_request_dhcp4_client(link); |
2ffd6d73 YW |
1087 | if (r < 0) |
1088 | return r; | |
eb34d4af | 1089 | |
ccffa166 | 1090 | r = link_request_dhcp6_client(link); |
2ffd6d73 YW |
1091 | if (r < 0) |
1092 | return r; | |
f5a8c43f | 1093 | |
ba4c7184 | 1094 | r = link_request_ndisc(link); |
2ffd6d73 YW |
1095 | if (r < 0) |
1096 | return r; | |
4138fb2c | 1097 | |
1d28a3cf YW |
1098 | r = link_request_dhcp_server(link); |
1099 | if (r < 0) | |
1100 | return r; | |
1101 | ||
a254fab2 | 1102 | r = link_request_radv(link); |
086b8853 YW |
1103 | if (r < 0) |
1104 | return r; | |
7465dd22 | 1105 | |
2ffd6d73 YW |
1106 | r = link_lldp_rx_configure(link); |
1107 | if (r < 0) | |
1108 | return r; | |
ce43e484 | 1109 | |
c01b9b87 YW |
1110 | r = link_lldp_tx_configure(link); |
1111 | if (r < 0) | |
1112 | return r; | |
1113 | ||
5e3bb5da YW |
1114 | r = link_drop_foreign_config(link); |
1115 | if (r < 0) | |
1116 | return r; | |
4c649652 | 1117 | |
1187fc33 YW |
1118 | r = link_request_static_configs(link); |
1119 | if (r < 0) | |
1120 | return r; | |
1121 | ||
1122 | if (!link_has_carrier(link)) | |
1123 | return 0; | |
1124 | ||
1125 | return link_acquire_dynamic_conf(link); | |
505f8da7 TG |
1126 | } |
1127 | ||
170e88c8 YW |
1128 | static int link_get_network(Link *link, Network **ret) { |
1129 | Network *network; | |
1a3caa49 | 1130 | int r; |
170e88c8 YW |
1131 | |
1132 | assert(link); | |
1133 | assert(link->manager); | |
1134 | assert(ret); | |
1135 | ||
1136 | ORDERED_HASHMAP_FOREACH(network, link->manager->networks) { | |
1137 | bool warn = false; | |
1138 | ||
1a3caa49 | 1139 | r = net_match_config( |
170e88c8 | 1140 | &network->match, |
8de56fb3 | 1141 | link->dev, |
52135071 YW |
1142 | &link->hw_addr, |
1143 | &link->permanent_hw_addr, | |
170e88c8 YW |
1144 | link->driver, |
1145 | link->iftype, | |
65022cd7 | 1146 | link->kind, |
170e88c8 YW |
1147 | link->ifname, |
1148 | link->alternative_names, | |
1149 | link->wlan_iftype, | |
1150 | link->ssid, | |
1a3caa49 YW |
1151 | &link->bssid); |
1152 | if (r < 0) | |
1153 | return r; | |
1154 | if (r == 0) | |
170e88c8 YW |
1155 | continue; |
1156 | ||
8de56fb3 | 1157 | if (network->match.ifname && link->dev) { |
170e88c8 YW |
1158 | uint8_t name_assign_type = NET_NAME_UNKNOWN; |
1159 | const char *attr; | |
1160 | ||
8de56fb3 | 1161 | if (sd_device_get_sysattr_value(link->dev, "name_assign_type", &attr) >= 0) |
170e88c8 YW |
1162 | (void) safe_atou8(attr, &name_assign_type); |
1163 | ||
1164 | warn = name_assign_type == NET_NAME_ENUM; | |
1165 | } | |
1166 | ||
1167 | log_link_full(link, warn ? LOG_WARNING : LOG_DEBUG, | |
1168 | "found matching network '%s'%s.", | |
1169 | network->filename, | |
1170 | warn ? ", based on potentially unpredictable interface name" : ""); | |
1171 | ||
1172 | if (network->unmanaged) | |
1173 | return -ENOENT; | |
1174 | ||
1175 | *ret = network; | |
1176 | return 0; | |
1177 | } | |
1178 | ||
1179 | return -ENOENT; | |
1180 | } | |
1181 | ||
8a4ad01a | 1182 | int link_reconfigure_impl(Link *link, bool force) { |
cb71e9c6 | 1183 | Network *network = NULL; |
9aa2585e | 1184 | NetDev *netdev = NULL; |
ad932b15 YW |
1185 | int r; |
1186 | ||
5a1860f7 | 1187 | assert(link); |
572b21d9 | 1188 | |
4faca0a3 | 1189 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_LINGER)) |
fb961119 YW |
1190 | return 0; |
1191 | ||
9aa2585e YW |
1192 | r = netdev_get(link->manager, link->ifname, &netdev); |
1193 | if (r < 0 && r != -ENOENT) | |
1194 | return r; | |
1195 | ||
170e88c8 | 1196 | r = link_get_network(link, &network); |
cb71e9c6 | 1197 | if (r < 0 && r != -ENOENT) |
ad932b15 YW |
1198 | return r; |
1199 | ||
fb961119 YW |
1200 | if (link->state != LINK_STATE_UNMANAGED && !network) |
1201 | /* If link is in initialized state, then link->network is also NULL. */ | |
1202 | force = true; | |
1203 | ||
99b8517c | 1204 | if (link->network == network && !force) |
ad932b15 YW |
1205 | return 0; |
1206 | ||
fb961119 YW |
1207 | if (network) { |
1208 | if (link->state == LINK_STATE_INITIALIZED) | |
1209 | log_link_info(link, "Configuring with %s.", network->filename); | |
1210 | else | |
1211 | log_link_info(link, "Reconfiguring with %s.", network->filename); | |
1212 | } else | |
1213 | log_link_full(link, link->state == LINK_STATE_INITIALIZED ? LOG_DEBUG : LOG_INFO, | |
1214 | "Unmanaging interface."); | |
ad932b15 YW |
1215 | |
1216 | /* Dropping old .network file */ | |
2a99eed0 | 1217 | r = link_stop_engines(link, false); |
572b21d9 | 1218 | if (r < 0) |
ad932b15 | 1219 | return r; |
ad932b15 | 1220 | |
19d9a5ad YW |
1221 | link_drop_requests(link); |
1222 | ||
81db4f3d | 1223 | if (network && !force && network->keep_configuration != KEEP_CONFIGURATION_YES) |
b4564f4e YW |
1224 | /* When a new/updated .network file is assigned, first make all configs (addresses, |
1225 | * routes, and so on) foreign, and then drop unnecessary configs later by | |
81db4f3d YW |
1226 | * link_drop_foreign_config() in link_configure(). |
1227 | * Note, when KeepConfiguration=yes, link_drop_foreign_config() does nothing. Hence, | |
1228 | * here we need to drop the configs such as addresses, routes, and so on configured by | |
1229 | * the previously assigned .network file. */ | |
b4564f4e YW |
1230 | link_foreignize_config(link); |
1231 | else { | |
a0e99a37 YW |
1232 | /* Remove all managed configs. Note, foreign configs are removed in later by |
1233 | * link_configure() -> link_drop_foreign_config() if the link is managed by us. */ | |
1234 | r = link_drop_managed_config(link); | |
b4564f4e YW |
1235 | if (r < 0) |
1236 | return r; | |
1237 | } | |
ad932b15 | 1238 | |
3cf58ef3 YW |
1239 | /* The bound_to map depends on .network file, hence it needs to be freed. But, do not free the |
1240 | * bound_by map. Otherwise, if a link enters unmanaged state below, then its carrier state will | |
1241 | * not propagated to other interfaces anymore. Moreover, it is not necessary to recreate the | |
1242 | * map here, as it depends on .network files assigned to other links. */ | |
1243 | link_free_bound_to_list(link); | |
1244 | ||
ad932b15 YW |
1245 | link_free_engines(link); |
1246 | link->network = network_unref(link->network); | |
1247 | ||
9aa2585e YW |
1248 | netdev_unref(link->netdev); |
1249 | link->netdev = netdev_ref(netdev); | |
1250 | ||
cb71e9c6 YW |
1251 | if (!network) { |
1252 | link_set_state(link, LINK_STATE_UNMANAGED); | |
1253 | return 0; | |
1254 | } | |
1255 | ||
ad932b15 | 1256 | /* Then, apply new .network file */ |
9092113d | 1257 | link->network = network_ref(network); |
b156a95d | 1258 | link_update_operstate(link, true); |
9092113d | 1259 | link_dirty(link); |
ad932b15 | 1260 | |
ad932b15 | 1261 | link_set_state(link, LINK_STATE_INITIALIZED); |
61135582 | 1262 | link->activated = false; |
ad932b15 | 1263 | |
ad932b15 YW |
1264 | r = link_configure(link); |
1265 | if (r < 0) | |
1266 | return r; | |
1267 | ||
0e397560 | 1268 | return 1; |
ad932b15 YW |
1269 | } |
1270 | ||
96f5f9ef | 1271 | static int link_reconfigure_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, bool force) { |
572b21d9 YW |
1272 | int r; |
1273 | ||
d09a179e YW |
1274 | assert(link); |
1275 | ||
5a1860f7 YW |
1276 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to update link state"); |
1277 | if (r <= 0) | |
1278 | return r; | |
1279 | ||
7f80fa12 | 1280 | r = link_reconfigure_impl(link, force); |
d09a179e | 1281 | if (r < 0) { |
572b21d9 | 1282 | link_enter_failed(link); |
d09a179e YW |
1283 | return 0; |
1284 | } | |
572b21d9 | 1285 | |
d09a179e | 1286 | return r; |
572b21d9 YW |
1287 | } |
1288 | ||
5a1860f7 | 1289 | static int link_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
96f5f9ef | 1290 | return link_reconfigure_handler_internal(rtnl, m, link, /* force = */ false); |
5a1860f7 | 1291 | } |
572b21d9 | 1292 | |
5a1860f7 | 1293 | static int link_force_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
96f5f9ef | 1294 | return link_reconfigure_handler_internal(rtnl, m, link, /* force = */ true); |
572b21d9 YW |
1295 | } |
1296 | ||
a39a9ac8 | 1297 | int link_reconfigure(Link *link, bool force) { |
d09a179e YW |
1298 | int r; |
1299 | ||
1300 | assert(link); | |
d09a179e | 1301 | |
8bceafa7 | 1302 | /* When link in pending or initialized state, then link_configure() will be called. To prevent |
f8dd4077 ZJS |
1303 | * the function from being called multiple times simultaneously, refuse to reconfigure the |
1304 | * interface in these cases. */ | |
8bceafa7 | 1305 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED, LINK_STATE_LINGER)) |
f8dd4077 | 1306 | return 0; /* 0 means no-op. */ |
2c0d7ed3 | 1307 | |
a39a9ac8 | 1308 | r = link_call_getlink(link, force ? link_force_reconfigure_handler : link_reconfigure_handler); |
572b21d9 YW |
1309 | if (r < 0) |
1310 | return r; | |
1311 | ||
8bceafa7 | 1312 | return 1; /* 1 means the interface will be reconfigured. */ |
572b21d9 YW |
1313 | } |
1314 | ||
e6bf7774 | 1315 | static int link_initialized_and_synced(Link *link) { |
505f8da7 TG |
1316 | int r; |
1317 | ||
1318 | assert(link); | |
505f8da7 TG |
1319 | assert(link->manager); |
1320 | ||
faa2e64f YW |
1321 | if (link->manager->test_mode) { |
1322 | log_link_debug(link, "Running in test mode, refusing to enter initialized state."); | |
1323 | link_set_state(link, LINK_STATE_UNMANAGED); | |
1324 | return 0; | |
1325 | } | |
1326 | ||
40695457 YW |
1327 | if (link->state == LINK_STATE_PENDING) { |
1328 | log_link_debug(link, "Link state is up-to-date"); | |
1329 | link_set_state(link, LINK_STATE_INITIALIZED); | |
505f8da7 | 1330 | |
40695457 YW |
1331 | r = link_new_bound_by_list(link); |
1332 | if (r < 0) | |
1333 | return r; | |
0d4ad91d | 1334 | |
40695457 YW |
1335 | r = link_handle_bound_by_list(link); |
1336 | if (r < 0) | |
1337 | return r; | |
1338 | } | |
0d4ad91d | 1339 | |
fb961119 | 1340 | return link_reconfigure_impl(link, /* force = */ false); |
505f8da7 TG |
1341 | } |
1342 | ||
302a796f | 1343 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4ff296b0 YW |
1344 | int r; |
1345 | ||
5a1860f7 YW |
1346 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to wait for the interface to be initialized"); |
1347 | if (r <= 0) | |
0b54c870 | 1348 | return r; |
572b21d9 | 1349 | |
4ff296b0 YW |
1350 | r = link_initialized_and_synced(link); |
1351 | if (r < 0) | |
1352 | link_enter_failed(link); | |
5a1860f7 YW |
1353 | |
1354 | return 0; | |
e6bf7774 YW |
1355 | } |
1356 | ||
3be9d62a | 1357 | static int link_initialized(Link *link, sd_device *device) { |
b0ff6dea YW |
1358 | int r; |
1359 | ||
4f561e8e | 1360 | assert(link); |
4f561e8e TG |
1361 | assert(device); |
1362 | ||
160203e9 YW |
1363 | /* Always replace with the new sd_device object. As the sysname (and possibly other properties |
1364 | * or sysattrs) may be outdated. */ | |
8de56fb3 | 1365 | device_unref_and_replace(link->dev, device); |
4f561e8e | 1366 | |
3b1dbdf0 YW |
1367 | if (link->dhcp_client) { |
1368 | r = sd_dhcp_client_attach_device(link->dhcp_client, link->dev); | |
1369 | if (r < 0) | |
1370 | log_link_warning_errno(link, r, "Failed to attach device to DHCPv4 client, ignoring: %m"); | |
1371 | } | |
1372 | ||
1373 | if (link->dhcp6_client) { | |
1374 | r = sd_dhcp6_client_attach_device(link->dhcp6_client, link->dev); | |
1375 | if (r < 0) | |
1376 | log_link_warning_errno(link, r, "Failed to attach device to DHCPv6 client, ignoring: %m"); | |
1377 | } | |
1378 | ||
b0ff6dea YW |
1379 | r = link_set_sr_iov_ifindices(link); |
1380 | if (r < 0) | |
1381 | log_link_warning_errno(link, r, "Failed to manage SR-IOV PF and VF ports, ignoring: %m"); | |
1382 | ||
40695457 YW |
1383 | if (link->state != LINK_STATE_PENDING) |
1384 | return link_reconfigure(link, /* force = */ false); | |
679b3605 | 1385 | |
79008bdd | 1386 | log_link_debug(link, "udev initialized link"); |
4f561e8e | 1387 | |
3c9b8860 TG |
1388 | /* udev has initialized the link, but we don't know if we have yet |
1389 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
1390 | * when it returns we know that the pending NEWLINKs have already been | |
1391 | * processed and that we are up-to-date */ | |
4f561e8e | 1392 | |
5a1860f7 | 1393 | return link_call_getlink(link, link_initialized_handler); |
cc2d7efc YW |
1394 | } |
1395 | ||
0d411b7f | 1396 | static int link_check_initialized(Link *link) { |
51517f9e | 1397 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
5a937ea2 | 1398 | int r; |
505f8da7 | 1399 | |
0d411b7f | 1400 | assert(link); |
505f8da7 | 1401 | |
82f52245 | 1402 | if (!udev_available()) |
0d411b7f | 1403 | return link_initialized_and_synced(link); |
852a3916 YW |
1404 | |
1405 | /* udev should be around */ | |
0ac655a6 | 1406 | r = sd_device_new_from_ifindex(&device, link->ifindex); |
852a3916 YW |
1407 | if (r < 0) { |
1408 | log_link_debug_errno(link, r, "Could not find device, waiting for device initialization: %m"); | |
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | r = sd_device_get_is_initialized(device); | |
0d411b7f YW |
1413 | if (r < 0) |
1414 | return log_link_warning_errno(link, r, "Could not determine whether the device is initialized: %m"); | |
852a3916 YW |
1415 | if (r == 0) { |
1416 | /* not yet ready */ | |
1417 | log_link_debug(link, "link pending udev initialization..."); | |
1418 | return 0; | |
1419 | } | |
1420 | ||
1421 | r = device_is_renaming(device); | |
0d411b7f YW |
1422 | if (r < 0) |
1423 | return log_link_warning_errno(link, r, "Failed to determine the device is being renamed: %m"); | |
852a3916 YW |
1424 | if (r > 0) { |
1425 | log_link_debug(link, "Interface is being renamed, pending initialization."); | |
1426 | return 0; | |
4f561e8e | 1427 | } |
505f8da7 | 1428 | |
0d411b7f | 1429 | return link_initialized(link, device); |
a748b692 TG |
1430 | } |
1431 | ||
1fd3ac1e | 1432 | int manager_udev_process_link(Manager *m, sd_device *device, sd_device_action_t action) { |
3be9d62a | 1433 | int r, ifindex; |
1fd3ac1e | 1434 | Link *link; |
3be9d62a YW |
1435 | |
1436 | assert(m); | |
1437 | assert(device); | |
1438 | ||
3be9d62a | 1439 | r = sd_device_get_ifindex(device, &ifindex); |
1fd3ac1e YW |
1440 | if (r < 0) |
1441 | return log_device_debug_errno(device, r, "Failed to get ifindex: %m"); | |
3be9d62a | 1442 | |
75255a8d YW |
1443 | r = link_get_by_index(m, ifindex, &link); |
1444 | if (r < 0) { | |
1445 | /* This error is not critical, as the corresponding rtnl message may be received later. */ | |
1446 | log_device_debug_errno(device, r, "Failed to get link from ifindex %i, ignoring: %m", ifindex); | |
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | /* Let's unref the sd-device object assigned to the corresponding Link object, but keep the Link | |
1451 | * object here. It will be removed only when rtnetlink says so. */ | |
1452 | if (action == SD_DEVICE_REMOVE) { | |
1453 | link->dev = sd_device_unref(link->dev); | |
1454 | return 0; | |
1455 | } | |
1456 | ||
3be9d62a | 1457 | r = device_is_renaming(device); |
1fd3ac1e YW |
1458 | if (r < 0) |
1459 | return log_device_debug_errno(device, r, "Failed to determine if the device is renaming or not: %m"); | |
3be9d62a | 1460 | if (r > 0) { |
1fd3ac1e | 1461 | log_device_debug(device, "Device is renaming, waiting for the interface to be renamed."); |
71cdfe16 YW |
1462 | /* TODO: |
1463 | * What happens when a device is initialized, then soon renamed after that? When we detect | |
1464 | * such, maybe we should cancel or postpone all queued requests for the interface. */ | |
3be9d62a YW |
1465 | return 0; |
1466 | } | |
1467 | ||
4b9a8c2b YW |
1468 | r = link_initialized(link, device); |
1469 | if (r < 0) | |
1470 | link_enter_failed(link); | |
3be9d62a YW |
1471 | |
1472 | return 0; | |
1473 | } | |
1474 | ||
9c0a72f9 | 1475 | static int link_carrier_gained(Link *link) { |
6706ce2f | 1476 | bool force_reconfigure; |
9c0a72f9 TG |
1477 | int r; |
1478 | ||
1479 | assert(link); | |
1480 | ||
6706ce2f YW |
1481 | r = event_source_disable(link->carrier_lost_timer); |
1482 | if (r < 0) | |
1483 | log_link_warning_errno(link, r, "Failed to disable carrier lost timer, ignoring: %m"); | |
1484 | ||
d9910948 YW |
1485 | /* If a wireless interface was connected to an access point, and the SSID is changed (that is, |
1486 | * both previous_ssid and ssid are non-NULL), then the connected wireless network could be | |
1487 | * changed. So, always reconfigure the link. Which means e.g. the DHCP client will be | |
1488 | * restarted, and the correct network information will be gained. | |
1489 | * | |
1490 | * However, do not reconfigure the wireless interface forcibly if it was not connected to any | |
1491 | * access points previously (previous_ssid is NULL in this case). As, a .network file may be | |
1492 | * already assigned to the interface (in that case, the .network file does not have the SSID= | |
1493 | * setting in the [Match] section), and the interface is already being configured. Of course, | |
1494 | * there may exist another .network file with higher priority and a matching SSID= setting. But | |
1495 | * in that case, link_reconfigure_impl() can handle that without the force_reconfigure flag. | |
1496 | * | |
6706ce2f | 1497 | * For non-wireless interfaces, we have no way to detect the connected network change. So, |
d9910948 YW |
1498 | * setting force_reconfigure = false. Note, both ssid and previous_ssid are NULL in that case. */ |
1499 | force_reconfigure = link->previous_ssid && !streq_ptr(link->previous_ssid, link->ssid); | |
6706ce2f YW |
1500 | link->previous_ssid = mfree(link->previous_ssid); |
1501 | ||
986b2514 AŠ |
1502 | /* AP and P2P-GO interfaces may have a new SSID - update the link properties in case a new .network |
1503 | * profile wants to match on it with SSID= in its [Match] section. | |
1504 | */ | |
1505 | if (IN_SET(link->wlan_iftype, NL80211_IFTYPE_AP, NL80211_IFTYPE_P2P_GO)) { | |
1506 | r = link_get_wlan_interface(link); | |
1507 | if (r < 0) | |
1508 | return r; | |
1509 | } | |
1510 | ||
081466bd YW |
1511 | /* At this stage, both wlan and link information should be up-to-date. Hence, it is not necessary to |
1512 | * call RTM_GETLINK, NL80211_CMD_GET_INTERFACE, or NL80211_CMD_GET_STATION commands, and simply call | |
1513 | * link_reconfigure_impl(). Note, link_reconfigure_impl() returns 1 when the link is reconfigured. */ | |
1514 | r = link_reconfigure_impl(link, force_reconfigure); | |
1515 | if (r != 0) | |
1516 | return r; | |
b7ac1284 | 1517 | |
aa9117c0 YW |
1518 | r = link_handle_bound_by_list(link); |
1519 | if (r < 0) | |
1520 | return r; | |
1521 | ||
600b7898 YW |
1522 | if (link->iftype == ARPHRD_CAN) |
1523 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
aa9117c0 | 1524 | return 0; |
600b7898 | 1525 | |
b9ea3d2e | 1526 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
8566df79 | 1527 | r = link_acquire_dynamic_conf(link); |
f0269653 | 1528 | if (r < 0) |
9c0a72f9 | 1529 | return r; |
6fc25497 | 1530 | |
97108953 | 1531 | r = link_request_static_configs(link); |
6fc25497 SS |
1532 | if (r < 0) |
1533 | return r; | |
9c0a72f9 TG |
1534 | } |
1535 | ||
aa9117c0 | 1536 | return 0; |
9c0a72f9 TG |
1537 | } |
1538 | ||
6706ce2f YW |
1539 | static int link_carrier_lost_impl(Link *link) { |
1540 | int r, ret = 0; | |
1541 | ||
1542 | assert(link); | |
1543 | ||
1544 | link->previous_ssid = mfree(link->previous_ssid); | |
1545 | ||
1546 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1547 | return 0; | |
1548 | ||
1549 | if (!link->network) | |
1550 | return 0; | |
1551 | ||
1552 | r = link_stop_engines(link, false); | |
1553 | if (r < 0) | |
1554 | ret = r; | |
1555 | ||
a0e99a37 | 1556 | r = link_drop_managed_config(link); |
6706ce2f YW |
1557 | if (r < 0 && ret >= 0) |
1558 | ret = r; | |
1559 | ||
1560 | return ret; | |
1561 | } | |
1562 | ||
1563 | static int link_carrier_lost_handler(sd_event_source *s, uint64_t usec, void *userdata) { | |
99534007 | 1564 | Link *link = ASSERT_PTR(userdata); |
6706ce2f YW |
1565 | int r; |
1566 | ||
6706ce2f YW |
1567 | r = link_carrier_lost_impl(link); |
1568 | if (r < 0) { | |
1569 | log_link_warning_errno(link, r, "Failed to process carrier lost event: %m"); | |
1570 | link_enter_failed(link); | |
1571 | } | |
1572 | ||
1573 | return 0; | |
1574 | } | |
1575 | ||
9c0a72f9 | 1576 | static int link_carrier_lost(Link *link) { |
b7326069 YW |
1577 | uint16_t dhcp_mtu; |
1578 | usec_t usec; | |
9c0a72f9 TG |
1579 | int r; |
1580 | ||
1581 | assert(link); | |
1582 | ||
aa9117c0 YW |
1583 | r = link_handle_bound_by_list(link); |
1584 | if (r < 0) | |
1585 | return r; | |
93b4dab5 | 1586 | |
600b7898 YW |
1587 | if (link->iftype == ARPHRD_CAN) |
1588 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
aa9117c0 YW |
1589 | return 0; |
1590 | ||
f1c22cf4 YW |
1591 | if (!link->network) |
1592 | return 0; | |
1593 | ||
b7326069 YW |
1594 | if (link->network->ignore_carrier_loss_set) |
1595 | /* If IgnoreCarrierLoss= is explicitly specified, then use the specified value. */ | |
1596 | usec = link->network->ignore_carrier_loss_usec; | |
1597 | ||
1598 | else if (link->network->bond && link->wlan_iftype > 0) | |
1599 | /* Enslaving wlan interface to a bond disconnects from the connected AP, and causes its | |
1600 | * carrier to be lost. See #19832. */ | |
1601 | usec = 3 * USEC_PER_SEC; | |
1602 | ||
1603 | else if (link->network->dhcp_use_mtu && | |
1604 | link->dhcp_lease && | |
1605 | sd_dhcp_lease_get_mtu(link->dhcp_lease, &dhcp_mtu) >= 0 && | |
1606 | dhcp_mtu != link->original_mtu) | |
1607 | /* Some drivers reset interfaces when changing MTU. Resetting interfaces by the static | |
1608 | * MTU should not cause any issues, as MTU is changed only once. However, setting MTU | |
1609 | * through DHCP lease causes an infinite loop of resetting the interface. See #18738. */ | |
1610 | usec = 5 * USEC_PER_SEC; | |
1611 | ||
1612 | else | |
1613 | /* Otherwise, use the currently set value. */ | |
1614 | usec = link->network->ignore_carrier_loss_usec; | |
1615 | ||
1616 | if (usec == USEC_INFINITY) | |
aa9117c0 | 1617 | return 0; |
600b7898 | 1618 | |
b7326069 | 1619 | if (usec == 0) |
6706ce2f YW |
1620 | return link_carrier_lost_impl(link); |
1621 | ||
1622 | return event_reset_time_relative(link->manager->event, | |
1623 | &link->carrier_lost_timer, | |
ba4e0427 | 1624 | CLOCK_BOOTTIME, |
b7326069 | 1625 | usec, |
6706ce2f YW |
1626 | 0, |
1627 | link_carrier_lost_handler, | |
1628 | link, | |
1629 | 0, | |
1630 | "link-carrier-loss", | |
1631 | true); | |
0c9ee5d5 YW |
1632 | } |
1633 | ||
0c9ee5d5 YW |
1634 | static int link_admin_state_up(Link *link) { |
1635 | int r; | |
1636 | ||
1637 | assert(link); | |
1638 | ||
1639 | /* This is called every time an interface admin state changes to up; | |
1640 | * specifically, when IFF_UP flag changes from unset to set. */ | |
1641 | ||
1642 | if (!link->network) | |
1643 | return 0; | |
1644 | ||
899b0e5e | 1645 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_DOWN) { |
1a054a20 | 1646 | log_link_info(link, "Activation policy is \"always-down\", forcing link down."); |
712fd5d2 | 1647 | return link_request_to_bring_up_or_down(link, /* up = */ false); |
0c9ee5d5 YW |
1648 | } |
1649 | ||
1650 | /* We set the ipv6 mtu after the device mtu, but the kernel resets | |
1651 | * ipv6 mtu on NETDEV_UP, so we need to reset it. */ | |
1652 | r = link_set_ipv6_mtu(link); | |
1653 | if (r < 0) | |
1654 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU, ignoring: %m"); | |
1655 | ||
1656 | return 0; | |
1657 | } | |
1658 | ||
1659 | static int link_admin_state_down(Link *link) { | |
1660 | assert(link); | |
1661 | ||
1662 | if (!link->network) | |
1663 | return 0; | |
1664 | ||
899b0e5e | 1665 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_UP) { |
1a054a20 | 1666 | log_link_info(link, "Activation policy is \"always-up\", forcing link up."); |
712fd5d2 | 1667 | return link_request_to_bring_up_or_down(link, /* up = */ true); |
0c9ee5d5 YW |
1668 | } |
1669 | ||
1670 | return 0; | |
1671 | } | |
1672 | ||
0c9ee5d5 YW |
1673 | static bool link_is_enslaved(Link *link) { |
1674 | if (link->flags & IFF_SLAVE) | |
0c9ee5d5 YW |
1675 | return true; |
1676 | ||
1f024462 | 1677 | if (link->master_ifindex > 0) |
0c9ee5d5 YW |
1678 | return true; |
1679 | ||
0c9ee5d5 YW |
1680 | return false; |
1681 | } | |
1682 | ||
1683 | static LinkAddressState address_state_from_scope(uint8_t scope) { | |
1684 | if (scope < RT_SCOPE_SITE) | |
1685 | /* universally accessible addresses found */ | |
1686 | return LINK_ADDRESS_STATE_ROUTABLE; | |
1687 | ||
1688 | if (scope < RT_SCOPE_HOST) | |
1689 | /* only link or site local addresses found */ | |
1690 | return LINK_ADDRESS_STATE_DEGRADED; | |
1691 | ||
1692 | /* no useful addresses found */ | |
1693 | return LINK_ADDRESS_STATE_OFF; | |
1694 | } | |
1695 | ||
1696 | void link_update_operstate(Link *link, bool also_update_master) { | |
1697 | LinkOperationalState operstate; | |
1698 | LinkCarrierState carrier_state; | |
1699 | LinkAddressState ipv4_address_state, ipv6_address_state, address_state; | |
1700 | LinkOnlineState online_state; | |
1701 | _cleanup_strv_free_ char **p = NULL; | |
1702 | uint8_t ipv4_scope = RT_SCOPE_NOWHERE, ipv6_scope = RT_SCOPE_NOWHERE; | |
1703 | bool changed = false; | |
1704 | Address *address; | |
1705 | ||
1706 | assert(link); | |
1707 | ||
1708 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
1709 | carrier_state = LINK_CARRIER_STATE_DORMANT; | |
1710 | else if (link_has_carrier(link)) { | |
1711 | if (link_is_enslaved(link)) | |
1712 | carrier_state = LINK_CARRIER_STATE_ENSLAVED; | |
1713 | else | |
1714 | carrier_state = LINK_CARRIER_STATE_CARRIER; | |
1715 | } else if (link->flags & IFF_UP) | |
1716 | carrier_state = LINK_CARRIER_STATE_NO_CARRIER; | |
1717 | else | |
1718 | carrier_state = LINK_CARRIER_STATE_OFF; | |
1719 | ||
1720 | if (carrier_state >= LINK_CARRIER_STATE_CARRIER) { | |
1721 | Link *slave; | |
1722 | ||
1723 | SET_FOREACH(slave, link->slaves) { | |
1724 | link_update_operstate(slave, false); | |
1725 | ||
1726 | if (slave->carrier_state < LINK_CARRIER_STATE_CARRIER) | |
1727 | carrier_state = LINK_CARRIER_STATE_DEGRADED_CARRIER; | |
1728 | } | |
1729 | } | |
1730 | ||
1731 | SET_FOREACH(address, link->addresses) { | |
1732 | if (!address_is_ready(address)) | |
1733 | continue; | |
1734 | ||
1735 | if (address->family == AF_INET) | |
1736 | ipv4_scope = MIN(ipv4_scope, address->scope); | |
1737 | ||
1738 | if (address->family == AF_INET6) | |
1739 | ipv6_scope = MIN(ipv6_scope, address->scope); | |
1740 | } | |
1741 | ||
0c9ee5d5 YW |
1742 | ipv4_address_state = address_state_from_scope(ipv4_scope); |
1743 | ipv6_address_state = address_state_from_scope(ipv6_scope); | |
1744 | address_state = address_state_from_scope(MIN(ipv4_scope, ipv6_scope)); | |
1745 | ||
1746 | /* Mapping of address and carrier state vs operational state | |
1747 | * carrier state | |
1748 | * | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
1749 | * ------------------------------------------------------------------------------ | |
1750 | * off | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
1751 | * address_state degraded | off | no-carrier | dormant | degraded-carrier | degraded | enslaved | |
1752 | * routable | off | no-carrier | dormant | degraded-carrier | routable | routable | |
1753 | */ | |
1754 | ||
1755 | if (carrier_state < LINK_CARRIER_STATE_CARRIER || address_state == LINK_ADDRESS_STATE_OFF) | |
1756 | operstate = (LinkOperationalState) carrier_state; | |
1757 | else if (address_state == LINK_ADDRESS_STATE_ROUTABLE) | |
1758 | operstate = LINK_OPERSTATE_ROUTABLE; | |
1759 | else if (carrier_state == LINK_CARRIER_STATE_CARRIER) | |
1760 | operstate = LINK_OPERSTATE_DEGRADED; | |
1761 | else | |
1762 | operstate = LINK_OPERSTATE_ENSLAVED; | |
1763 | ||
1764 | /* Only determine online state for managed links with RequiredForOnline=yes */ | |
1765 | if (!link->network || !link->network->required_for_online) | |
1766 | online_state = _LINK_ONLINE_STATE_INVALID; | |
1767 | else if (operstate < link->network->required_operstate_for_online.min || | |
1768 | operstate > link->network->required_operstate_for_online.max) | |
1769 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1770 | else { | |
1771 | AddressFamily required_family = link->network->required_family_for_online; | |
1772 | bool needs_ipv4 = required_family & ADDRESS_FAMILY_IPV4; | |
1773 | bool needs_ipv6 = required_family & ADDRESS_FAMILY_IPV6; | |
1774 | ||
1775 | /* The operational state is within the range required for online. | |
1776 | * If a particular address family is also required, we might revert | |
1777 | * to offline in the blocks below. */ | |
1778 | online_state = LINK_ONLINE_STATE_ONLINE; | |
1779 | ||
1780 | if (link->network->required_operstate_for_online.min >= LINK_OPERSTATE_DEGRADED) { | |
1781 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_DEGRADED) | |
1782 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1783 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_DEGRADED) | |
1784 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1785 | } | |
1786 | ||
1787 | if (link->network->required_operstate_for_online.min >= LINK_OPERSTATE_ROUTABLE) { | |
1788 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_ROUTABLE) | |
1789 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1790 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_ROUTABLE) | |
1791 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
1792 | } | |
1793 | } | |
1794 | ||
1795 | if (link->carrier_state != carrier_state) { | |
1796 | link->carrier_state = carrier_state; | |
1797 | changed = true; | |
1798 | if (strv_extend(&p, "CarrierState") < 0) | |
1799 | log_oom(); | |
1800 | } | |
1801 | ||
1802 | if (link->address_state != address_state) { | |
1803 | link->address_state = address_state; | |
1804 | changed = true; | |
1805 | if (strv_extend(&p, "AddressState") < 0) | |
1806 | log_oom(); | |
1807 | } | |
0d4ad91d | 1808 | |
0c9ee5d5 YW |
1809 | if (link->ipv4_address_state != ipv4_address_state) { |
1810 | link->ipv4_address_state = ipv4_address_state; | |
1811 | changed = true; | |
1812 | if (strv_extend(&p, "IPv4AddressState") < 0) | |
1813 | log_oom(); | |
1814 | } | |
9c0a72f9 | 1815 | |
0c9ee5d5 YW |
1816 | if (link->ipv6_address_state != ipv6_address_state) { |
1817 | link->ipv6_address_state = ipv6_address_state; | |
1818 | changed = true; | |
1819 | if (strv_extend(&p, "IPv6AddressState") < 0) | |
1820 | log_oom(); | |
1821 | } | |
9c0a72f9 | 1822 | |
0c9ee5d5 YW |
1823 | if (link->operstate != operstate) { |
1824 | link->operstate = operstate; | |
1825 | changed = true; | |
1826 | if (strv_extend(&p, "OperationalState") < 0) | |
1827 | log_oom(); | |
1828 | } | |
9c0a72f9 | 1829 | |
0c9ee5d5 YW |
1830 | if (link->online_state != online_state) { |
1831 | link->online_state = online_state; | |
1832 | changed = true; | |
1833 | if (strv_extend(&p, "OnlineState") < 0) | |
1834 | log_oom(); | |
1835 | } | |
9c0a72f9 | 1836 | |
0c9ee5d5 YW |
1837 | if (p) |
1838 | link_send_changed_strv(link, p); | |
1839 | if (changed) | |
1840 | link_dirty(link); | |
9c0a72f9 | 1841 | |
0c9ee5d5 YW |
1842 | if (also_update_master) { |
1843 | Link *master; | |
9c0a72f9 | 1844 | |
0c9ee5d5 YW |
1845 | if (link_get_master(link, &master) >= 0) |
1846 | link_update_operstate(master, true); | |
1847 | } | |
9c0a72f9 TG |
1848 | } |
1849 | ||
0c9ee5d5 YW |
1850 | #define FLAG_STRING(string, flag, old, new) \ |
1851 | (((old ^ new) & flag) \ | |
1852 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
1853 | : "") | |
1854 | ||
0d411b7f | 1855 | static int link_update_flags(Link *link, sd_netlink_message *message) { |
96f5f9ef | 1856 | bool link_was_admin_up, had_carrier; |
0c9ee5d5 YW |
1857 | uint8_t operstate; |
1858 | unsigned flags; | |
d236718c DS |
1859 | int r; |
1860 | ||
61135582 | 1861 | assert(link); |
0d411b7f | 1862 | assert(message); |
61135582 | 1863 | |
0d411b7f | 1864 | r = sd_rtnl_message_link_get_flags(message, &flags); |
0c9ee5d5 | 1865 | if (r < 0) |
0d411b7f | 1866 | return log_link_debug_errno(link, r, "rtnl: failed to read link flags: %m"); |
3be9d62a | 1867 | |
0d411b7f YW |
1868 | r = sd_netlink_message_read_u8(message, IFLA_OPERSTATE, &operstate); |
1869 | if (r == -ENODATA) | |
1870 | /* If we got a message without operstate, assume the state was unchanged. */ | |
0c9ee5d5 | 1871 | operstate = link->kernel_operstate; |
0d411b7f YW |
1872 | else if (r < 0) |
1873 | return log_link_debug_errno(link, r, "rtnl: failed to read operational state: %m"); | |
0c9ee5d5 | 1874 | |
0d411b7f | 1875 | if (link->flags == flags && link->kernel_operstate == operstate) |
61135582 DS |
1876 | return 0; |
1877 | ||
0c9ee5d5 YW |
1878 | if (link->flags != flags) { |
1879 | unsigned unknown_flags, unknown_flags_added, unknown_flags_removed; | |
61135582 | 1880 | |
0c9ee5d5 YW |
1881 | 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", |
1882 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), | |
1883 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
1884 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
1885 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
1886 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
1887 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
1888 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
1889 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
1890 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
1891 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
1892 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
1893 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
1894 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
1895 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
1896 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
1897 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
1898 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
1899 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
1900 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
d236718c | 1901 | |
0c9ee5d5 YW |
1902 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | |
1903 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
1904 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
1905 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
1906 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
1907 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
1908 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
1909 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
d236718c | 1910 | |
0c9ee5d5 YW |
1911 | if (unknown_flags_added) |
1912 | log_link_debug(link, "Unknown link flags gained, ignoring: %#.5x", unknown_flags_added); | |
61135582 | 1913 | |
0c9ee5d5 YW |
1914 | if (unknown_flags_removed) |
1915 | log_link_debug(link, "Unknown link flags lost, ignoring: %#.5x", unknown_flags_removed); | |
1916 | } | |
61135582 | 1917 | |
0d411b7f YW |
1918 | link_was_admin_up = link->flags & IFF_UP; |
1919 | had_carrier = link_has_carrier(link); | |
1920 | ||
0c9ee5d5 YW |
1921 | link->flags = flags; |
1922 | link->kernel_operstate = operstate; | |
36161cba | 1923 | |
0c9ee5d5 | 1924 | link_update_operstate(link, true); |
61135582 | 1925 | |
0d411b7f YW |
1926 | if (!link_was_admin_up && (link->flags & IFF_UP)) { |
1927 | log_link_info(link, "Link UP"); | |
22936833 | 1928 | |
0d411b7f YW |
1929 | r = link_admin_state_up(link); |
1930 | if (r < 0) | |
1931 | return r; | |
1932 | } else if (link_was_admin_up && !(link->flags & IFF_UP)) { | |
1933 | log_link_info(link, "Link DOWN"); | |
0d4ad91d | 1934 | |
0d411b7f | 1935 | r = link_admin_state_down(link); |
0d4ad91d AR |
1936 | if (r < 0) |
1937 | return r; | |
7619683b TG |
1938 | } |
1939 | ||
0d411b7f YW |
1940 | if (!had_carrier && link_has_carrier(link)) { |
1941 | log_link_info(link, "Gained carrier"); | |
0d4ad91d | 1942 | |
0d411b7f | 1943 | r = link_carrier_gained(link); |
30de2b89 YW |
1944 | if (r < 0) |
1945 | return r; | |
0d411b7f YW |
1946 | } else if (had_carrier && !link_has_carrier(link)) { |
1947 | log_link_info(link, "Lost carrier"); | |
1948 | ||
1949 | r = link_carrier_lost(link); | |
0b54c870 YW |
1950 | if (r < 0) |
1951 | return r; | |
b8941f74 TG |
1952 | } |
1953 | ||
0d411b7f YW |
1954 | return 0; |
1955 | } | |
afe7fd56 | 1956 | |
0d411b7f YW |
1957 | static int link_update_master(Link *link, sd_netlink_message *message) { |
1958 | int master_ifindex, r; | |
7465dd22 | 1959 | |
0d411b7f YW |
1960 | assert(link); |
1961 | assert(message); | |
69629de9 | 1962 | |
0d411b7f YW |
1963 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t*) &master_ifindex); |
1964 | if (r == -ENODATA) | |
1965 | return 0; | |
1966 | if (r < 0) | |
1967 | return log_link_debug_errno(link, r, "rtnl: failed to read master ifindex: %m"); | |
807667f7 | 1968 | |
571bf1aa YW |
1969 | if (master_ifindex == link->ifindex) |
1970 | master_ifindex = 0; | |
1971 | ||
0d411b7f YW |
1972 | if (master_ifindex == link->master_ifindex) |
1973 | return 0; | |
807667f7 | 1974 | |
0d411b7f | 1975 | if (link->master_ifindex == 0) |
8458ca26 | 1976 | log_link_debug(link, "Attached to master interface: %i", master_ifindex); |
0d411b7f | 1977 | else if (master_ifindex == 0) |
8458ca26 | 1978 | log_link_debug(link, "Detached from master interface: %i", link->master_ifindex); |
0d411b7f | 1979 | else |
e2341b6b DT |
1980 | log_link_debug(link, "Master interface changed: %i %s %i", link->master_ifindex, |
1981 | special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), master_ifindex); | |
807667f7 | 1982 | |
0d411b7f | 1983 | link_drop_from_master(link); |
807667f7 | 1984 | |
0d411b7f | 1985 | link->master_ifindex = master_ifindex; |
413708d1 | 1986 | |
0d411b7f YW |
1987 | r = link_append_to_master(link); |
1988 | if (r < 0) | |
1989 | return log_link_debug_errno(link, r, "Failed to append link to master: %m"); | |
7465dd22 | 1990 | |
0d411b7f YW |
1991 | return 0; |
1992 | } | |
807667f7 | 1993 | |
e1658632 YW |
1994 | static int link_update_driver(Link *link, sd_netlink_message *message) { |
1995 | int r; | |
1996 | ||
1997 | assert(link); | |
1998 | assert(link->manager); | |
1999 | assert(message); | |
2000 | ||
2001 | /* Driver is already read. Assuming the driver is never changed. */ | |
6625c39e | 2002 | if (link->ethtool_driver_read) |
e1658632 YW |
2003 | return 0; |
2004 | ||
2005 | /* When udevd is running, read the driver after the interface is initialized by udevd. | |
2006 | * Otherwise, ethtool may not work correctly. See issue #22538. | |
2007 | * When udevd is not running, read the value when the interface is detected. */ | |
6625c39e | 2008 | if (udev_available() && !link->dev) |
e1658632 YW |
2009 | return 0; |
2010 | ||
6625c39e YW |
2011 | link->ethtool_driver_read = true; |
2012 | ||
e1658632 YW |
2013 | r = ethtool_get_driver(&link->manager->ethtool_fd, link->ifname, &link->driver); |
2014 | if (r < 0) { | |
2015 | log_link_debug_errno(link, r, "Failed to get driver, continuing without: %m"); | |
2016 | return 0; | |
2017 | } | |
2018 | ||
2019 | log_link_debug(link, "Found driver: %s", strna(link->driver)); | |
2020 | ||
2021 | if (streq_ptr(link->driver, "dsa")) { | |
2022 | uint32_t dsa_master_ifindex = 0; | |
2023 | ||
2024 | r = sd_netlink_message_read_u32(message, IFLA_LINK, &dsa_master_ifindex); | |
2025 | if (r < 0 && r != -ENODATA) | |
2026 | return log_link_debug_errno(link, r, "rtnl: failed to read ifindex of the DSA master interface: %m"); | |
2027 | ||
2028 | if (dsa_master_ifindex > INT_MAX) { | |
2029 | log_link_debug(link, "rtnl: received too large DSA master ifindex (%"PRIu32" > INT_MAX), ignoring.", | |
2030 | dsa_master_ifindex); | |
2031 | dsa_master_ifindex = 0; | |
2032 | } | |
2033 | ||
2034 | link->dsa_master_ifindex = (int) dsa_master_ifindex; | |
2035 | } | |
2036 | ||
40695457 | 2037 | return 1; /* needs reconfigure */ |
e1658632 YW |
2038 | } |
2039 | ||
6625c39e | 2040 | static int link_update_permanent_hardware_address_from_ethtool(Link *link, sd_netlink_message *message) { |
e1658632 YW |
2041 | int r; |
2042 | ||
2043 | assert(link); | |
2044 | assert(link->manager); | |
2045 | assert(message); | |
2046 | ||
6625c39e | 2047 | if (link->ethtool_permanent_hw_addr_read) |
e1658632 YW |
2048 | return 0; |
2049 | ||
2050 | /* When udevd is running, read the permanent hardware address after the interface is | |
2051 | * initialized by udevd. Otherwise, ethtool may not work correctly. See issue #22538. | |
2052 | * When udevd is not running, read the value when the interface is detected. */ | |
6625c39e YW |
2053 | if (udev_available() && !link->dev) |
2054 | return 0; | |
2055 | ||
2056 | /* If the interface does not have a hardware address, then it will not have a permanent address either. */ | |
2057 | r = netlink_message_read_hw_addr(message, IFLA_ADDRESS, NULL); | |
2058 | if (r == -ENODATA) | |
2059 | return 0; | |
2060 | if (r < 0) | |
2061 | return log_link_debug_errno(link, r, "Failed to read IFLA_ADDRESS attribute: %m"); | |
2062 | ||
2063 | link->ethtool_permanent_hw_addr_read = true; | |
2064 | ||
2065 | r = ethtool_get_permanent_hw_addr(&link->manager->ethtool_fd, link->ifname, &link->permanent_hw_addr); | |
2066 | if (r < 0) | |
2067 | log_link_debug_errno(link, r, "Permanent hardware address not found, continuing without: %m"); | |
2068 | ||
2069 | return 0; | |
2070 | } | |
2071 | ||
2072 | static int link_update_permanent_hardware_address(Link *link, sd_netlink_message *message) { | |
2073 | int r; | |
2074 | ||
2075 | assert(link); | |
2076 | assert(link->manager); | |
2077 | assert(message); | |
2078 | ||
2079 | if (link->permanent_hw_addr.length > 0) | |
e1658632 YW |
2080 | return 0; |
2081 | ||
2082 | r = netlink_message_read_hw_addr(message, IFLA_PERM_ADDRESS, &link->permanent_hw_addr); | |
2083 | if (r < 0) { | |
2084 | if (r != -ENODATA) | |
2085 | return log_link_debug_errno(link, r, "Failed to read IFLA_PERM_ADDRESS attribute: %m"); | |
2086 | ||
6625c39e YW |
2087 | /* Fallback to ethtool for older kernels. */ |
2088 | r = link_update_permanent_hardware_address_from_ethtool(link, message); | |
2089 | if (r < 0) | |
2090 | return r; | |
e1658632 YW |
2091 | } |
2092 | ||
2093 | if (link->permanent_hw_addr.length > 0) | |
2094 | log_link_debug(link, "Saved permanent hardware address: %s", HW_ADDR_TO_STR(&link->permanent_hw_addr)); | |
2095 | ||
40695457 | 2096 | return 1; /* needs reconfigure */ |
e1658632 YW |
2097 | } |
2098 | ||
0d411b7f | 2099 | static int link_update_hardware_address(Link *link, sd_netlink_message *message) { |
e2bacccd | 2100 | struct hw_addr_data addr; |
0d411b7f | 2101 | int r; |
d93d655c | 2102 | |
0d411b7f YW |
2103 | assert(link); |
2104 | assert(message); | |
dfc58b47 | 2105 | |
0d411b7f YW |
2106 | r = netlink_message_read_hw_addr(message, IFLA_BROADCAST, &link->bcast_addr); |
2107 | if (r < 0 && r != -ENODATA) | |
2108 | return log_link_debug_errno(link, r, "rtnl: failed to read broadcast address: %m"); | |
4f882b2a | 2109 | |
e2bacccd | 2110 | r = netlink_message_read_hw_addr(message, IFLA_ADDRESS, &addr); |
0d411b7f YW |
2111 | if (r == -ENODATA) |
2112 | return 0; | |
2113 | if (r < 0) | |
fe321d45 | 2114 | return log_link_debug_errno(link, r, "rtnl: failed to read hardware address: %m"); |
bb262ef0 | 2115 | |
e2bacccd | 2116 | if (hw_addr_equal(&link->hw_addr, &addr)) |
0d411b7f | 2117 | return 0; |
a61bb41c | 2118 | |
de0f1579 | 2119 | if (link->hw_addr.length == 0) |
e2bacccd | 2120 | log_link_debug(link, "Saved hardware address: %s", HW_ADDR_TO_STR(&addr)); |
fe321d45 | 2121 | else { |
e2341b6b DT |
2122 | log_link_debug(link, "Hardware address is changed: %s %s %s", |
2123 | HW_ADDR_TO_STR(&link->hw_addr), | |
2124 | special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), | |
2125 | HW_ADDR_TO_STR(&addr)); | |
0d411b7f | 2126 | |
e74f1d07 | 2127 | hashmap_remove_value(link->manager->links_by_hw_addr, &link->hw_addr, link); |
fe321d45 YW |
2128 | } |
2129 | ||
e2bacccd YW |
2130 | link->hw_addr = addr; |
2131 | ||
fe321d45 YW |
2132 | if (!hw_addr_is_null(&link->hw_addr)) { |
2133 | r = hashmap_ensure_put(&link->manager->links_by_hw_addr, &hw_addr_hash_ops, &link->hw_addr, link); | |
2134 | if (r == -EEXIST && streq_ptr(link->kind, "bond")) | |
2135 | /* bonding master and its slaves have the same hardware address. */ | |
2136 | r = hashmap_replace(link->manager->links_by_hw_addr, &link->hw_addr, link); | |
2137 | if (r < 0) | |
2138 | log_link_debug_errno(link, r, "Failed to manage link by its new hardware address, ignoring: %m"); | |
2139 | } | |
0d411b7f | 2140 | |
76a86ffd YW |
2141 | r = ipv4ll_update_mac(link); |
2142 | if (r < 0) | |
2143 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4 ACD client: %m"); | |
2144 | ||
0d411b7f | 2145 | r = ipv4ll_update_mac(link); |
a61bb41c | 2146 | if (r < 0) |
0d411b7f | 2147 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); |
a61bb41c | 2148 | |
0d411b7f YW |
2149 | r = dhcp4_update_mac(link); |
2150 | if (r < 0) | |
2151 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
d236718c | 2152 | |
0d411b7f YW |
2153 | r = dhcp6_update_mac(link); |
2154 | if (r < 0) | |
2155 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
2156 | ||
2157 | r = radv_update_mac(link); | |
2158 | if (r < 0) | |
2159 | return log_link_debug_errno(link, r, "Could not update MAC address for Router Advertisement: %m"); | |
2160 | ||
3be64aa4 | 2161 | if (link->ndisc && link->hw_addr.length == ETH_ALEN) { |
ca2b7cd8 | 2162 | r = sd_ndisc_set_mac(link->ndisc, &link->hw_addr.ether); |
d236718c | 2163 | if (r < 0) |
0d411b7f YW |
2164 | return log_link_debug_errno(link, r, "Could not update MAC for NDisc: %m"); |
2165 | } | |
d236718c | 2166 | |
35778343 YW |
2167 | if (link->lldp_rx) { |
2168 | r = sd_lldp_rx_set_filter_address(link->lldp_rx, &link->hw_addr.ether); | |
61135582 | 2169 | if (r < 0) |
c01b9b87 YW |
2170 | return log_link_debug_errno(link, r, "Could not update MAC address for LLDP Rx: %m"); |
2171 | } | |
2172 | ||
2173 | if (link->lldp_tx) { | |
2174 | r = sd_lldp_tx_set_hwaddr(link->lldp_tx, &link->hw_addr.ether); | |
2175 | if (r < 0) | |
2176 | return log_link_debug_errno(link, r, "Could not update MAC address for LLDP Tx: %m"); | |
61135582 DS |
2177 | } |
2178 | ||
40695457 | 2179 | return 1; /* needs reconfigure */ |
0d411b7f | 2180 | } |
a61bb41c | 2181 | |
0d411b7f | 2182 | static int link_update_mtu(Link *link, sd_netlink_message *message) { |
717ba5fc | 2183 | uint32_t mtu, min_mtu = 0, max_mtu = UINT32_MAX; |
0d411b7f | 2184 | int r; |
a61bb41c | 2185 | |
0d411b7f YW |
2186 | assert(link); |
2187 | assert(message); | |
2188 | ||
2189 | r = sd_netlink_message_read_u32(message, IFLA_MTU, &mtu); | |
2190 | if (r == -ENODATA) | |
2191 | return 0; | |
2192 | if (r < 0) | |
2193 | return log_link_debug_errno(link, r, "rtnl: failed to read MTU in RTM_NEWLINK message: %m"); | |
b5d0fd1e YW |
2194 | if (mtu == 0) |
2195 | return 0; | |
0d411b7f | 2196 | |
717ba5fc YW |
2197 | r = sd_netlink_message_read_u32(message, IFLA_MIN_MTU, &min_mtu); |
2198 | if (r < 0 && r != -ENODATA) | |
2199 | return log_link_debug_errno(link, r, "rtnl: failed to read minimum MTU in RTM_NEWLINK message: %m"); | |
2200 | ||
2201 | r = sd_netlink_message_read_u32(message, IFLA_MAX_MTU, &max_mtu); | |
2202 | if (r < 0 && r != -ENODATA) | |
2203 | return log_link_debug_errno(link, r, "rtnl: failed to read maximum MTU in RTM_NEWLINK message: %m"); | |
2204 | ||
717ba5fc YW |
2205 | if (max_mtu == 0) |
2206 | max_mtu = UINT32_MAX; | |
2207 | ||
2208 | link->min_mtu = min_mtu; | |
2209 | link->max_mtu = max_mtu; | |
2210 | ||
0d411b7f YW |
2211 | if (link->original_mtu == 0) { |
2212 | link->original_mtu = mtu; | |
717ba5fc YW |
2213 | log_link_debug(link, "Saved original MTU %" PRIu32" (min: %"PRIu32", max: %"PRIu32")", |
2214 | link->original_mtu, link->min_mtu, link->max_mtu); | |
0d411b7f YW |
2215 | } |
2216 | ||
717ba5fc YW |
2217 | if (link->mtu == mtu) |
2218 | return 0; | |
2219 | ||
b5d0fd1e | 2220 | if (link->mtu != 0) |
e2341b6b DT |
2221 | log_link_debug(link, "MTU is changed: %"PRIu32" %s %"PRIu32" (min: %"PRIu32", max: %"PRIu32")", |
2222 | link->mtu, special_glyph(SPECIAL_GLYPH_ARROW_RIGHT), mtu, | |
2223 | link->min_mtu, link->max_mtu); | |
0d411b7f YW |
2224 | |
2225 | link->mtu = mtu; | |
2226 | ||
2227 | if (link->dhcp_client) { | |
2228 | r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu); | |
9c0a72f9 | 2229 | if (r < 0) |
0d411b7f YW |
2230 | return log_link_debug_errno(link, r, "Could not update MTU in DHCP client: %m"); |
2231 | } | |
a61bb41c | 2232 | |
0d411b7f YW |
2233 | if (link->radv) { |
2234 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
9c0a72f9 | 2235 | if (r < 0) |
0d411b7f | 2236 | return log_link_debug_errno(link, r, "Could not set MTU for Router Advertisement: %m"); |
a61bb41c TG |
2237 | } |
2238 | ||
2239 | return 0; | |
dd3efc09 | 2240 | } |
fe8db0c5 | 2241 | |
0d411b7f YW |
2242 | static int link_update_alternative_names(Link *link, sd_netlink_message *message) { |
2243 | _cleanup_strv_free_ char **altnames = NULL; | |
0d411b7f YW |
2244 | int r; |
2245 | ||
2246 | assert(link); | |
2247 | assert(message); | |
2248 | ||
2249 | r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &altnames); | |
50df02a7 | 2250 | if (r == -ENODATA) |
2368ff81 | 2251 | /* The message does not have IFLA_PROP_LIST container attribute. It does not mean the |
50df02a7 YW |
2252 | * interface has no alternative name. */ |
2253 | return 0; | |
2254 | if (r < 0) | |
0d411b7f YW |
2255 | return log_link_debug_errno(link, r, "rtnl: failed to read alternative names: %m"); |
2256 | ||
1b345c1e YW |
2257 | if (strv_equal(altnames, link->alternative_names)) |
2258 | return 0; | |
2259 | ||
0d411b7f YW |
2260 | STRV_FOREACH(n, link->alternative_names) |
2261 | hashmap_remove(link->manager->links_by_name, *n); | |
2262 | ||
2263 | strv_free_and_replace(link->alternative_names, altnames); | |
2264 | ||
2265 | STRV_FOREACH(n, link->alternative_names) { | |
2266 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, *n, link); | |
2267 | if (r < 0) | |
2268 | return log_link_debug_errno(link, r, "Failed to manage link by its new alternative names: %m"); | |
2269 | } | |
2270 | ||
40695457 | 2271 | return 1; /* needs reconfigure */ |
0d411b7f YW |
2272 | } |
2273 | ||
2274 | static int link_update_name(Link *link, sd_netlink_message *message) { | |
01afd0f7 | 2275 | char ifname_from_index[IF_NAMESIZE]; |
0d411b7f YW |
2276 | const char *ifname; |
2277 | int r; | |
2278 | ||
2279 | assert(link); | |
2280 | assert(message); | |
2281 | ||
2282 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); | |
2283 | if (r == -ENODATA) | |
7802194a | 2284 | /* Hmm?? But ok. */ |
0d411b7f YW |
2285 | return 0; |
2286 | if (r < 0) | |
2287 | return log_link_debug_errno(link, r, "Failed to read interface name in RTM_NEWLINK message: %m"); | |
2288 | ||
2289 | if (streq(ifname, link->ifname)) | |
2290 | return 0; | |
2291 | ||
01afd0f7 YW |
2292 | r = format_ifname(link->ifindex, ifname_from_index); |
2293 | if (r < 0) | |
2294 | return log_link_debug_errno(link, r, "Could not get interface name for index %i.", link->ifindex); | |
176b8be1 YW |
2295 | |
2296 | if (!streq(ifname, ifname_from_index)) { | |
2297 | log_link_debug(link, "New interface name '%s' received from the kernel does not correspond " | |
2298 | "with the name currently configured on the actual interface '%s'. Ignoring.", | |
2299 | ifname, ifname_from_index); | |
2300 | return 0; | |
2301 | } | |
2302 | ||
0d411b7f YW |
2303 | log_link_info(link, "Interface name change detected, renamed to %s.", ifname); |
2304 | ||
2305 | hashmap_remove(link->manager->links_by_name, link->ifname); | |
2306 | ||
2307 | r = free_and_strdup(&link->ifname, ifname); | |
2308 | if (r < 0) | |
2309 | return log_oom_debug(); | |
2310 | ||
2311 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, link->ifname, link); | |
2312 | if (r < 0) | |
2313 | return log_link_debug_errno(link, r, "Failed to manage link by its new name: %m"); | |
2314 | ||
54d1fdb2 YW |
2315 | if (link->dhcp_client) { |
2316 | r = sd_dhcp_client_set_ifname(link->dhcp_client, link->ifname); | |
2317 | if (r < 0) | |
2318 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP client: %m"); | |
2319 | } | |
2320 | ||
2321 | if (link->dhcp6_client) { | |
2322 | r = sd_dhcp6_client_set_ifname(link->dhcp6_client, link->ifname); | |
2323 | if (r < 0) | |
2324 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP6 client: %m"); | |
2325 | } | |
2326 | ||
2327 | if (link->ndisc) { | |
2328 | r = sd_ndisc_set_ifname(link->ndisc, link->ifname); | |
2329 | if (r < 0) | |
2330 | return log_link_debug_errno(link, r, "Failed to update interface name in NDisc: %m"); | |
2331 | } | |
2332 | ||
2333 | if (link->dhcp_server) { | |
2334 | r = sd_dhcp_server_set_ifname(link->dhcp_server, link->ifname); | |
2335 | if (r < 0) | |
2336 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP server: %m"); | |
2337 | } | |
2338 | ||
2339 | if (link->radv) { | |
2340 | r = sd_radv_set_ifname(link->radv, link->ifname); | |
2341 | if (r < 0) | |
2342 | return log_link_debug_errno(link, r, "Failed to update interface name in Router Advertisement: %m"); | |
2343 | } | |
2344 | ||
35778343 YW |
2345 | if (link->lldp_rx) { |
2346 | r = sd_lldp_rx_set_ifname(link->lldp_rx, link->ifname); | |
54d1fdb2 | 2347 | if (r < 0) |
c01b9b87 YW |
2348 | return log_link_debug_errno(link, r, "Failed to update interface name in LLDP Rx: %m"); |
2349 | } | |
2350 | ||
2351 | if (link->lldp_tx) { | |
2352 | r = sd_lldp_tx_set_ifname(link->lldp_tx, link->ifname); | |
2353 | if (r < 0) | |
2354 | return log_link_debug_errno(link, r, "Failed to update interface name in LLDP Tx: %m"); | |
54d1fdb2 YW |
2355 | } |
2356 | ||
2357 | if (link->ipv4ll) { | |
2358 | r = sd_ipv4ll_set_ifname(link->ipv4ll, link->ifname); | |
2359 | if (r < 0) | |
2360 | return log_link_debug_errno(link, r, "Failed to update interface name in IPv4LL client: %m"); | |
2361 | } | |
2362 | ||
86173383 YW |
2363 | r = ipv4acd_set_ifname(link); |
2364 | if (r < 0) | |
2365 | return log_link_debug_errno(link, r, "Failed to update interface name in IPv4ACD client: %m"); | |
54d1fdb2 | 2366 | |
40695457 | 2367 | return 1; /* needs reconfigure */ |
0d411b7f YW |
2368 | } |
2369 | ||
2370 | static int link_update(Link *link, sd_netlink_message *message) { | |
40695457 | 2371 | bool needs_reconfigure = false; |
0d411b7f YW |
2372 | int r; |
2373 | ||
2374 | assert(link); | |
2375 | assert(message); | |
2376 | ||
2377 | r = link_update_name(link, message); | |
2378 | if (r < 0) | |
2379 | return r; | |
40695457 | 2380 | needs_reconfigure = needs_reconfigure || r > 0; |
0d411b7f YW |
2381 | |
2382 | r = link_update_alternative_names(link, message); | |
2383 | if (r < 0) | |
2384 | return r; | |
40695457 | 2385 | needs_reconfigure = needs_reconfigure || r > 0; |
0d411b7f YW |
2386 | |
2387 | r = link_update_mtu(link, message); | |
2388 | if (r < 0) | |
2389 | return r; | |
2390 | ||
e1658632 YW |
2391 | r = link_update_driver(link, message); |
2392 | if (r < 0) | |
2393 | return r; | |
40695457 | 2394 | needs_reconfigure = needs_reconfigure || r > 0; |
e1658632 YW |
2395 | |
2396 | r = link_update_permanent_hardware_address(link, message); | |
2397 | if (r < 0) | |
2398 | return r; | |
40695457 | 2399 | needs_reconfigure = needs_reconfigure || r > 0; |
e1658632 | 2400 | |
0d411b7f YW |
2401 | r = link_update_hardware_address(link, message); |
2402 | if (r < 0) | |
2403 | return r; | |
40695457 | 2404 | needs_reconfigure = needs_reconfigure || r > 0; |
0d411b7f YW |
2405 | |
2406 | r = link_update_master(link, message); | |
2407 | if (r < 0) | |
2408 | return r; | |
2409 | ||
7d0d832d YW |
2410 | r = link_update_ipv6ll_addrgen_mode(link, message); |
2411 | if (r < 0) | |
2412 | return r; | |
2413 | ||
40695457 YW |
2414 | r = link_update_flags(link, message); |
2415 | if (r < 0) | |
2416 | return r; | |
2417 | ||
2418 | return needs_reconfigure; | |
0d411b7f YW |
2419 | } |
2420 | ||
0c9ee5d5 YW |
2421 | static Link *link_drop_or_unref(Link *link) { |
2422 | if (!link) | |
2423 | return NULL; | |
2424 | if (!link->manager) | |
2425 | return link_unref(link); | |
2426 | return link_drop(link); | |
2427 | } | |
2428 | ||
2429 | DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_drop_or_unref); | |
2430 | ||
2431 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { | |
0d411b7f | 2432 | _cleanup_free_ char *ifname = NULL, *kind = NULL, *state_file = NULL, *lease_file = NULL, *lldp_file = NULL; |
0c9ee5d5 | 2433 | _cleanup_(link_drop_or_unrefp) Link *link = NULL; |
0c9ee5d5 YW |
2434 | unsigned short iftype; |
2435 | int r, ifindex; | |
0c9ee5d5 YW |
2436 | |
2437 | assert(manager); | |
2438 | assert(message); | |
2439 | assert(ret); | |
2440 | ||
0c9ee5d5 YW |
2441 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
2442 | if (r < 0) | |
0d411b7f | 2443 | return log_debug_errno(r, "rtnl: failed to read ifindex from link message: %m"); |
0c9ee5d5 | 2444 | else if (ifindex <= 0) |
0d411b7f | 2445 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "rtnl: received link message without valid ifindex."); |
0c9ee5d5 YW |
2446 | |
2447 | r = sd_rtnl_message_link_get_type(message, &iftype); | |
2448 | if (r < 0) | |
0d411b7f | 2449 | return log_debug_errno(r, "rtnl: failed to read interface type from link message: %m"); |
0c9ee5d5 YW |
2450 | |
2451 | r = sd_netlink_message_read_string_strdup(message, IFLA_IFNAME, &ifname); | |
2452 | if (r < 0) | |
0d411b7f | 2453 | return log_debug_errno(r, "rtnl: failed to read interface name from link message: %m"); |
0c9ee5d5 YW |
2454 | |
2455 | /* check for link kind */ | |
2456 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
2457 | if (r >= 0) { | |
0d411b7f YW |
2458 | r = sd_netlink_message_read_string_strdup(message, IFLA_INFO_KIND, &kind); |
2459 | if (r < 0 && r != -ENODATA) | |
2460 | return log_debug_errno(r, "rtnl: failed to read interface kind from link message: %m"); | |
0c9ee5d5 YW |
2461 | r = sd_netlink_message_exit_container(message); |
2462 | if (r < 0) | |
0d411b7f | 2463 | return log_debug_errno(r, "rtnl: failed to exit IFLA_LINKINFO container: %m"); |
0c9ee5d5 YW |
2464 | } |
2465 | ||
4c78dc17 YW |
2466 | if (!manager->test_mode) { |
2467 | /* Do not update state files when running in test mode. */ | |
2468 | if (asprintf(&state_file, "/run/systemd/netif/links/%d", ifindex) < 0) | |
2469 | return log_oom_debug(); | |
0d411b7f | 2470 | |
4c78dc17 YW |
2471 | if (asprintf(&lease_file, "/run/systemd/netif/leases/%d", ifindex) < 0) |
2472 | return log_oom_debug(); | |
0d411b7f | 2473 | |
4c78dc17 YW |
2474 | if (asprintf(&lldp_file, "/run/systemd/netif/lldp/%d", ifindex) < 0) |
2475 | return log_oom_debug(); | |
2476 | } | |
0d411b7f | 2477 | |
0c9ee5d5 YW |
2478 | link = new(Link, 1); |
2479 | if (!link) | |
2480 | return -ENOMEM; | |
2481 | ||
2482 | *link = (Link) { | |
2483 | .n_ref = 1, | |
2484 | .state = LINK_STATE_PENDING, | |
2485 | .online_state = _LINK_ONLINE_STATE_INVALID, | |
2486 | .ifindex = ifindex, | |
2487 | .iftype = iftype, | |
2488 | .ifname = TAKE_PTR(ifname), | |
2489 | .kind = TAKE_PTR(kind), | |
2490 | ||
7d0d832d YW |
2491 | .ipv6ll_address_gen_mode = _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_INVALID, |
2492 | ||
0d411b7f YW |
2493 | .state_file = TAKE_PTR(state_file), |
2494 | .lease_file = TAKE_PTR(lease_file), | |
2495 | .lldp_file = TAKE_PTR(lldp_file), | |
2496 | ||
0c9ee5d5 YW |
2497 | .n_dns = UINT_MAX, |
2498 | .dns_default_route = -1, | |
2499 | .llmnr = _RESOLVE_SUPPORT_INVALID, | |
2500 | .mdns = _RESOLVE_SUPPORT_INVALID, | |
2501 | .dnssec_mode = _DNSSEC_MODE_INVALID, | |
2502 | .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID, | |
2503 | }; | |
2504 | ||
6eab614d | 2505 | r = hashmap_ensure_put(&manager->links_by_index, NULL, INT_TO_PTR(link->ifindex), link); |
0c9ee5d5 | 2506 | if (r < 0) |
0d411b7f | 2507 | return log_link_debug_errno(link, r, "Failed to store link into manager: %m"); |
0c9ee5d5 YW |
2508 | |
2509 | link->manager = manager; | |
2510 | ||
0d411b7f | 2511 | r = hashmap_ensure_put(&manager->links_by_name, &string_hash_ops, link->ifname, link); |
0c9ee5d5 | 2512 | if (r < 0) |
0d411b7f | 2513 | return log_link_debug_errno(link, r, "Failed to manage link by its interface name: %m"); |
0c9ee5d5 | 2514 | |
8a77e245 YW |
2515 | log_link_debug(link, "Saved new link: ifindex=%i, iftype=%s(%u), kind=%s", |
2516 | link->ifindex, strna(arphrd_to_name(link->iftype)), link->iftype, strna(link->kind)); | |
2517 | ||
9c5b8d46 AŠ |
2518 | /* If contained in this set, the link is wireless and the corresponding NL80211_CMD_NEW_INTERFACE |
2519 | * message arrived too early. Request the wireless link information again. | |
2520 | */ | |
2521 | if (set_remove(manager->new_wlan_ifindices, INT_TO_PTR(link->ifindex))) { | |
2522 | r = link_get_wlan_interface(link); | |
2523 | if (r < 0) | |
2524 | log_link_warning_errno(link, r, "Failed to get wireless interface, ignoring: %m"); | |
2525 | } | |
2526 | ||
0c9ee5d5 | 2527 | *ret = TAKE_PTR(link); |
0c9ee5d5 YW |
2528 | return 0; |
2529 | } | |
2530 | ||
0d411b7f | 2531 | int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *manager) { |
3be9d62a YW |
2532 | Link *link = NULL; |
2533 | NetDev *netdev = NULL; | |
2534 | uint16_t type; | |
2535 | const char *name; | |
2536 | int r, ifindex; | |
2537 | ||
2538 | assert(rtnl); | |
2539 | assert(message); | |
0d411b7f | 2540 | assert(manager); |
3be9d62a YW |
2541 | |
2542 | if (sd_netlink_message_is_error(message)) { | |
2543 | r = sd_netlink_message_get_errno(message); | |
2544 | if (r < 0) | |
2545 | log_message_warning_errno(message, r, "rtnl: Could not receive link message, ignoring"); | |
2546 | ||
2547 | return 0; | |
2548 | } | |
2549 | ||
2550 | r = sd_netlink_message_get_type(message, &type); | |
2551 | if (r < 0) { | |
2552 | log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m"); | |
2553 | return 0; | |
2554 | } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) { | |
2555 | log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type); | |
2556 | return 0; | |
2557 | } | |
2558 | ||
2559 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
2560 | if (r < 0) { | |
2561 | log_warning_errno(r, "rtnl: Could not get ifindex from link message, ignoring: %m"); | |
2562 | return 0; | |
2563 | } else if (ifindex <= 0) { | |
2564 | log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex); | |
2565 | return 0; | |
2566 | } | |
2567 | ||
2568 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name); | |
2569 | if (r < 0) { | |
2570 | log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m"); | |
2571 | return 0; | |
2572 | } | |
2573 | ||
6eab614d | 2574 | (void) link_get_by_index(manager, ifindex, &link); |
0d411b7f | 2575 | (void) netdev_get(manager, name, &netdev); |
3be9d62a YW |
2576 | |
2577 | switch (type) { | |
2578 | case RTM_NEWLINK: | |
0d411b7f YW |
2579 | if (netdev) { |
2580 | /* netdev exists, so make sure the ifindex matches */ | |
2581 | r = netdev_set_ifindex(netdev, message); | |
2582 | if (r < 0) { | |
66141164 | 2583 | log_netdev_warning_errno(netdev, r, "Could not process new link message for netdev, ignoring: %m"); |
0d411b7f YW |
2584 | return 0; |
2585 | } | |
2586 | } | |
2587 | ||
3be9d62a YW |
2588 | if (!link) { |
2589 | /* link is new, so add it */ | |
0d411b7f | 2590 | r = link_new(manager, message, &link); |
3be9d62a | 2591 | if (r < 0) { |
0d411b7f | 2592 | log_warning_errno(r, "Could not process new link message: %m"); |
3be9d62a YW |
2593 | return 0; |
2594 | } | |
3be9d62a | 2595 | |
0d411b7f | 2596 | r = link_update(link, message); |
3be9d62a | 2597 | if (r < 0) { |
66141164 | 2598 | log_link_warning_errno(link, r, "Could not process link message: %m"); |
0d411b7f | 2599 | link_enter_failed(link); |
3be9d62a YW |
2600 | return 0; |
2601 | } | |
3be9d62a | 2602 | |
0d411b7f YW |
2603 | r = link_check_initialized(link); |
2604 | if (r < 0) { | |
66141164 | 2605 | log_link_warning_errno(link, r, "Failed to check link is initialized: %m"); |
0d411b7f YW |
2606 | link_enter_failed(link); |
2607 | return 0; | |
2608 | } | |
2609 | } else { | |
2610 | r = link_update(link, message); | |
2611 | if (r < 0) { | |
66141164 | 2612 | log_link_warning_errno(link, r, "Could not process link message: %m"); |
0d411b7f YW |
2613 | link_enter_failed(link); |
2614 | return 0; | |
2615 | } | |
40695457 YW |
2616 | if (r > 0) { |
2617 | r = link_reconfigure_impl(link, /* force = */ false); | |
2618 | if (r < 0) { | |
2619 | log_link_warning_errno(link, r, "Failed to reconfigure interface: %m"); | |
2620 | link_enter_failed(link); | |
2621 | return 0; | |
2622 | } | |
2623 | } | |
3be9d62a | 2624 | } |
3be9d62a YW |
2625 | break; |
2626 | ||
2627 | case RTM_DELLINK: | |
2628 | link_drop(link); | |
2629 | netdev_drop(netdev); | |
3be9d62a YW |
2630 | break; |
2631 | ||
2632 | default: | |
04499a70 | 2633 | assert_not_reached(); |
3be9d62a YW |
2634 | } |
2635 | ||
2636 | return 1; | |
2637 | } | |
2638 | ||
79c6e114 YW |
2639 | int link_getlink_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg) { |
2640 | uint16_t message_type; | |
2641 | int r; | |
2642 | ||
2643 | assert(m); | |
2644 | assert(link); | |
2645 | assert(error_msg); | |
2646 | ||
2647 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
2648 | return 0; | |
2649 | ||
2650 | r = sd_netlink_message_get_errno(m); | |
2651 | if (r < 0) { | |
2652 | log_link_message_warning_errno(link, m, r, error_msg); | |
2653 | link_enter_failed(link); | |
2654 | return 0; | |
2655 | } | |
2656 | ||
2657 | r = sd_netlink_message_get_type(m, &message_type); | |
2658 | if (r < 0) { | |
2659 | log_link_debug_errno(link, r, "rtnl: failed to read link message type, ignoring: %m"); | |
2660 | return 0; | |
2661 | } | |
2662 | if (message_type != RTM_NEWLINK) { | |
2663 | log_link_debug(link, "rtnl: received invalid link message type, ignoring."); | |
2664 | return 0; | |
2665 | } | |
2666 | ||
2667 | r = link_update(link, m); | |
2668 | if (r < 0) { | |
2669 | link_enter_failed(link); | |
2670 | return 0; | |
2671 | } | |
2672 | ||
2673 | return 1; | |
2674 | } | |
2675 | ||
2676 | int link_call_getlink(Link *link, link_netlink_message_handler_t callback) { | |
2677 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
2678 | int r; | |
2679 | ||
2680 | assert(link); | |
2681 | assert(link->manager); | |
2682 | assert(link->manager->rtnl); | |
2683 | assert(callback); | |
2684 | ||
2685 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, link->ifindex); | |
2686 | if (r < 0) | |
2687 | return r; | |
2688 | ||
2689 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, | |
2690 | link_netlink_destroy_callback, link); | |
2691 | if (r < 0) | |
2692 | return r; | |
2693 | ||
2694 | link_ref(link); | |
2695 | return 0; | |
2696 | } | |
2697 | ||
fe8db0c5 | 2698 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
0580badc | 2699 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 2700 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 2701 | [LINK_STATE_CONFIGURING] = "configuring", |
0580badc ZJS |
2702 | [LINK_STATE_CONFIGURED] = "configured", |
2703 | [LINK_STATE_UNMANAGED] = "unmanaged", | |
2704 | [LINK_STATE_FAILED] = "failed", | |
2705 | [LINK_STATE_LINGER] = "linger", | |
fe8db0c5 TG |
2706 | }; |
2707 | ||
2708 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
7ae55b78 YW |
2709 | |
2710 | int link_flags_to_string_alloc(uint32_t flags, char **ret) { | |
2711 | _cleanup_free_ char *str = NULL; | |
19aa7eeb ZJS |
2712 | static const char* map[] = { |
2713 | [LOG2U(IFF_UP)] = "up", /* interface is up. */ | |
0b75493d | 2714 | [LOG2U(IFF_BROADCAST)] = "broadcast", /* broadcast address valid. */ |
19aa7eeb ZJS |
2715 | [LOG2U(IFF_DEBUG)] = "debug", /* turn on debugging. */ |
2716 | [LOG2U(IFF_LOOPBACK)] = "loopback", /* interface is a loopback net. */ | |
2717 | [LOG2U(IFF_POINTOPOINT)] = "point-to-point", /* interface has p-p link. */ | |
2718 | [LOG2U(IFF_NOTRAILERS)] = "no-trailers", /* avoid use of trailers. */ | |
2719 | [LOG2U(IFF_RUNNING)] = "running", /* interface RFC2863 OPER_UP. */ | |
2720 | [LOG2U(IFF_NOARP)] = "no-arp", /* no ARP protocol. */ | |
2721 | [LOG2U(IFF_PROMISC)] = "promiscuous", /* receive all packets. */ | |
2722 | [LOG2U(IFF_ALLMULTI)] = "all-multicast", /* receive all multicast packets. */ | |
2723 | [LOG2U(IFF_MASTER)] = "master", /* master of a load balancer. */ | |
2724 | [LOG2U(IFF_SLAVE)] = "slave", /* slave of a load balancer. */ | |
0b75493d | 2725 | [LOG2U(IFF_MULTICAST)] = "multicast", /* supports multicast. */ |
19aa7eeb ZJS |
2726 | [LOG2U(IFF_PORTSEL)] = "portsel", /* can set media type. */ |
2727 | [LOG2U(IFF_AUTOMEDIA)] = "auto-media", /* auto media select active. */ | |
2728 | [LOG2U(IFF_DYNAMIC)] = "dynamic", /* dialup device with changing addresses. */ | |
2729 | [LOG2U(IFF_LOWER_UP)] = "lower-up", /* driver signals L1 up. */ | |
2730 | [LOG2U(IFF_DORMANT)] = "dormant", /* driver signals dormant. */ | |
2731 | [LOG2U(IFF_ECHO)] = "echo", /* echo sent packets. */ | |
7ae55b78 YW |
2732 | }; |
2733 | ||
2734 | assert(ret); | |
2735 | ||
2736 | for (size_t i = 0; i < ELEMENTSOF(map); i++) | |
19aa7eeb ZJS |
2737 | if (FLAGS_SET(flags, 1 << i) && map[i]) |
2738 | if (!strextend_with_separator(&str, ",", map[i])) | |
2739 | return -ENOMEM; | |
7ae55b78 YW |
2740 | |
2741 | *ret = TAKE_PTR(str); | |
2742 | return 0; | |
2743 | } | |
2744 | ||
2745 | static const char * const kernel_operstate_table[] = { | |
2746 | [IF_OPER_UNKNOWN] = "unknown", | |
2747 | [IF_OPER_NOTPRESENT] = "not-present", | |
2748 | [IF_OPER_DOWN] = "down", | |
2749 | [IF_OPER_LOWERLAYERDOWN] = "lower-layer-down", | |
2750 | [IF_OPER_TESTING] = "testing", | |
2751 | [IF_OPER_DORMANT] = "dormant", | |
2752 | [IF_OPER_UP] = "up", | |
2753 | }; | |
2754 | ||
2755 | DEFINE_STRING_TABLE_LOOKUP_TO_STRING(kernel_operstate, int); |