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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
f579559b | 2 | |
f579559b | 3 | #include <linux/if.h> |
8f815e8b | 4 | #include <linux/if_arp.h> |
518cd6b5 | 5 | #include <linux/if_link.h> |
2a0d07d6 | 6 | #include <linux/netdevice.h> |
1cf40697 | 7 | #include <net/if.h> |
8430841b | 8 | #include <sys/socket.h> |
4cc7a82c | 9 | #include <unistd.h> |
f579559b | 10 | |
baa3fadf DDM |
11 | #include "sd-bus.h" |
12 | #include "sd-dhcp-client.h" | |
13 | #include "sd-dhcp-server.h" | |
14 | #include "sd-dhcp6-client.h" | |
15 | #include "sd-dhcp6-lease.h" | |
16 | #include "sd-ipv4ll.h" | |
17 | #include "sd-lldp-rx.h" | |
18 | #include "sd-ndisc.h" | |
19 | #include "sd-netlink.h" | |
20 | #include "sd-radv.h" | |
21 | ||
b5efdb8a | 22 | #include "alloc-util.h" |
8a77e245 | 23 | #include "arphrd-util.h" |
1e4e5572 | 24 | #include "bitfield.h" |
3be9d62a | 25 | #include "device-util.h" |
baa3fadf | 26 | #include "errno-util.h" |
4bb7cc82 | 27 | #include "ethtool-util.h" |
6706ce2f | 28 | #include "event-util.h" |
868258cf | 29 | #include "format-ifname.h" |
af664001 | 30 | #include "fs-util.h" |
e2341b6b | 31 | #include "glyph-util.h" |
3ae6b3bf | 32 | #include "logarithm.h" |
baa3fadf | 33 | #include "netif-util.h" |
cf1d700d | 34 | #include "netlink-util.h" |
093e3533 | 35 | #include "networkd-address.h" |
1cf40697 | 36 | #include "networkd-address-label.h" |
9671ae9d | 37 | #include "networkd-bridge-fdb.h" |
ff9e0783 | 38 | #include "networkd-bridge-mdb.h" |
11cee6ef | 39 | #include "networkd-bridge-vlan.h" |
d5ebcf65 | 40 | #include "networkd-dhcp-prefix-delegation.h" |
8fcf1d61 | 41 | #include "networkd-dhcp-server.h" |
ca5ad760 YW |
42 | #include "networkd-dhcp4.h" |
43 | #include "networkd-dhcp6.h" | |
76a86ffd | 44 | #include "networkd-ipv4acd.h" |
ca5ad760 | 45 | #include "networkd-ipv4ll.h" |
76c5a0f2 | 46 | #include "networkd-ipv6-proxy-ndp.h" |
6a1af3d4 | 47 | #include "networkd-link.h" |
1cf40697 | 48 | #include "networkd-link-bus.h" |
8e1ad1ea | 49 | #include "networkd-lldp-tx.h" |
23f53b99 | 50 | #include "networkd-manager.h" |
1e7a0e21 | 51 | #include "networkd-ndisc.h" |
e4a71bf3 | 52 | #include "networkd-neighbor.h" |
75156ccb | 53 | #include "networkd-nexthop.h" |
19d9a5ad | 54 | #include "networkd-queue.h" |
7465dd22 | 55 | #include "networkd-radv.h" |
3b6a3bde | 56 | #include "networkd-route.h" |
1cf40697 | 57 | #include "networkd-route-util.h" |
bce67bbe | 58 | #include "networkd-routing-policy-rule.h" |
0fa8ee6c | 59 | #include "networkd-setlink.h" |
19d9a5ad | 60 | #include "networkd-sriov.h" |
3b5a4fc6 | 61 | #include "networkd-state-file.h" |
19d9a5ad | 62 | #include "networkd-sysctl.h" |
986b2514 | 63 | #include "networkd-wifi.h" |
baa3fadf | 64 | #include "ordered-set.h" |
c94f6ab1 | 65 | #include "parse-util.h" |
cf1d700d TG |
66 | #include "set.h" |
67 | #include "socket-util.h" | |
8b43440b | 68 | #include "string-table.h" |
baa3fadf | 69 | #include "string-util.h" |
51517f9e | 70 | #include "strv.h" |
34658df2 | 71 | #include "tc.h" |
299ad32d | 72 | #include "udev-util.h" |
fc2f9534 | 73 | |
2278d9f6 YW |
74 | void link_required_operstate_for_online(Link *link, LinkOperationalStateRange *ret) { |
75 | assert(link); | |
76 | assert(ret); | |
77 | ||
78 | if (link->network && operational_state_range_is_valid(&link->network->required_operstate_for_online)) | |
a853cc99 | 79 | /* If explicitly specified, use it as is. */ |
2278d9f6 | 80 | *ret = link->network->required_operstate_for_online; |
3255bda6 | 81 | else if (link->iftype == ARPHRD_CAN) |
a853cc99 | 82 | /* CAN devices do not support addressing, hence defaults to 'carrier'. */ |
3255bda6 YW |
83 | *ret = (const LinkOperationalStateRange) { |
84 | .min = LINK_OPERSTATE_CARRIER, | |
85 | .max = LINK_OPERSTATE_CARRIER, | |
86 | }; | |
a853cc99 YW |
87 | else if (link->network && link->network->bond) |
88 | /* Bonding slaves do not support addressing. */ | |
89 | *ret = (const LinkOperationalStateRange) { | |
90 | .min = LINK_OPERSTATE_ENSLAVED, | |
91 | .max = LINK_OPERSTATE_ENSLAVED, | |
92 | }; | |
93 | else if (STRPTR_IN_SET(link->kind, "batadv", "bond", "bridge", "vrf")) | |
94 | /* Some of slave interfaces may be offline. */ | |
95 | *ret = (const LinkOperationalStateRange) { | |
96 | .min = LINK_OPERSTATE_DEGRADED_CARRIER, | |
97 | .max = LINK_OPERSTATE_ROUTABLE, | |
98 | }; | |
2278d9f6 YW |
99 | else |
100 | *ret = LINK_OPERSTATE_RANGE_DEFAULT; | |
101 | } | |
102 | ||
a853cc99 YW |
103 | AddressFamily link_required_family_for_online(Link *link) { |
104 | assert(link); | |
105 | ||
106 | if (link->network && link->network->required_family_for_online >= 0) | |
107 | return link->network->required_family_for_online; | |
108 | ||
109 | if (link->network && operational_state_range_is_valid(&link->network->required_operstate_for_online)) | |
110 | /* If RequiredForOnline= is explicitly specified, defaults to no. */ | |
111 | return ADDRESS_FAMILY_NO; | |
112 | ||
113 | if (STRPTR_IN_SET(link->kind, "batadv", "bond", "bridge", "vrf")) | |
114 | /* As the minimum required operstate for master interfaces is 'degraded-carrier', | |
115 | * we should request an address assigned to the link for backward compatibility. */ | |
116 | return ADDRESS_FAMILY_YES; | |
117 | ||
118 | return ADDRESS_FAMILY_NO; | |
119 | } | |
120 | ||
5e0534f1 | 121 | bool link_ipv6_enabled(Link *link) { |
439689c6 SS |
122 | assert(link); |
123 | ||
124 | if (!socket_ipv6_is_supported()) | |
125 | return false; | |
126 | ||
5fb5fae9 | 127 | if (link->iftype == ARPHRD_CAN) |
2b00a4e0 TY |
128 | return false; |
129 | ||
5fb5fae9 YW |
130 | if (!link->network) |
131 | return false; | |
132 | ||
133 | if (link->network->bond) | |
af9ba57a YW |
134 | return false; |
135 | ||
bd7e0a3f | 136 | if (link_may_have_ipv6ll(link, /* check_multicast = */ false)) |
adfeee49 YW |
137 | return true; |
138 | ||
139 | if (network_has_static_ipv6_configurations(link->network)) | |
140 | return true; | |
141 | ||
142 | return false; | |
439689c6 SS |
143 | } |
144 | ||
fc35a9f8 YW |
145 | bool link_has_ipv6_connectivity(Link *link) { |
146 | LinkAddressState ipv6_address_state; | |
147 | ||
148 | assert(link); | |
149 | ||
150 | link_get_address_states(link, NULL, &ipv6_address_state, NULL); | |
151 | ||
152 | switch (ipv6_address_state) { | |
153 | case LINK_ADDRESS_STATE_ROUTABLE: | |
154 | /* If the interface has a routable IPv6 address, then we assume yes. */ | |
155 | return true; | |
156 | ||
157 | case LINK_ADDRESS_STATE_DEGRADED: | |
158 | /* If the interface has only degraded IPv6 address (mostly, link-local address), then let's check | |
159 | * there is an IPv6 default gateway. */ | |
160 | return link_has_default_gateway(link, AF_INET6); | |
161 | ||
162 | case LINK_ADDRESS_STATE_OFF: | |
163 | /* No IPv6 address. */ | |
164 | return false; | |
165 | ||
166 | default: | |
167 | assert_not_reached(); | |
168 | } | |
169 | } | |
170 | ||
e33232d4 | 171 | static bool link_is_ready_to_configure_one(Link *link, bool allow_unmanaged) { |
7191a57a YW |
172 | assert(link); |
173 | ||
d8d4db58 YW |
174 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED, LINK_STATE_UNMANAGED)) |
175 | return false; | |
176 | ||
2fd3908b YW |
177 | if (!link->network) |
178 | return allow_unmanaged; | |
7191a57a | 179 | |
baa95d22 YW |
180 | if (!link->network->configure_without_carrier) { |
181 | if (link->set_flags_messages > 0) | |
182 | return false; | |
183 | ||
184 | if (!link_has_carrier(link)) | |
185 | return false; | |
186 | } | |
7191a57a | 187 | |
0fa8ee6c YW |
188 | if (link->set_link_messages > 0) |
189 | return false; | |
190 | ||
112a0972 YW |
191 | if (!link->activated) |
192 | return false; | |
112a0972 | 193 | |
7191a57a YW |
194 | return true; |
195 | } | |
196 | ||
e33232d4 YW |
197 | bool link_is_ready_to_configure(Link *link, bool allow_unmanaged) { |
198 | return check_ready_for_all_sr_iov_ports(link, allow_unmanaged, link_is_ready_to_configure_one); | |
199 | } | |
200 | ||
5078e366 YW |
201 | bool link_is_ready_to_configure_by_name(Manager *manager, const char *name, bool allow_unmanaged) { |
202 | assert(manager); | |
203 | assert(name); | |
204 | ||
205 | Link *link; | |
206 | if (link_get_by_name(manager, name, &link) < 0) | |
207 | return false; | |
208 | ||
209 | return link_is_ready_to_configure(link, allow_unmanaged); | |
210 | } | |
211 | ||
15761549 YW |
212 | void link_ntp_settings_clear(Link *link) { |
213 | link->ntp = strv_free(link->ntp); | |
214 | } | |
215 | ||
216 | void link_dns_settings_clear(Link *link) { | |
f5fbe71d | 217 | if (link->n_dns != UINT_MAX) |
e77bd3fd YW |
218 | for (unsigned i = 0; i < link->n_dns; i++) |
219 | in_addr_full_free(link->dns[i]); | |
15761549 | 220 | link->dns = mfree(link->dns); |
f5fbe71d | 221 | link->n_dns = UINT_MAX; |
15761549 | 222 | |
6e4571f0 YW |
223 | link->search_domains = ordered_set_free(link->search_domains); |
224 | link->route_domains = ordered_set_free(link->route_domains); | |
15761549 YW |
225 | |
226 | link->dns_default_route = -1; | |
227 | link->llmnr = _RESOLVE_SUPPORT_INVALID; | |
228 | link->mdns = _RESOLVE_SUPPORT_INVALID; | |
229 | link->dnssec_mode = _DNSSEC_MODE_INVALID; | |
230 | link->dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID; | |
231 | ||
25a9bd72 | 232 | link->dnssec_negative_trust_anchors = set_free(link->dnssec_negative_trust_anchors); |
15761549 YW |
233 | } |
234 | ||
49e50134 | 235 | static void link_free_engines(Link *link) { |
1a6bb31f YW |
236 | if (!link) |
237 | return; | |
238 | ||
239 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); | |
b3fac19f | 240 | |
1a6bb31f YW |
241 | link->dhcp_client = sd_dhcp_client_unref(link->dhcp_client); |
242 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); | |
e49bad01 | 243 | link->dhcp4_6rd_tunnel_name = mfree(link->dhcp4_6rd_tunnel_name); |
1a6bb31f | 244 | |
35778343 | 245 | link->lldp_rx = sd_lldp_rx_unref(link->lldp_rx); |
c01b9b87 | 246 | link->lldp_tx = sd_lldp_tx_unref(link->lldp_tx); |
1a6bb31f | 247 | |
5385e5f9 YW |
248 | link->ipv4acd_by_address = hashmap_free(link->ipv4acd_by_address); |
249 | ||
1a6bb31f | 250 | link->ipv4ll = sd_ipv4ll_unref(link->ipv4ll); |
b3fac19f | 251 | |
1a6bb31f | 252 | link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); |
1633c457 | 253 | link->dhcp6_lease = sd_dhcp6_lease_unref(link->dhcp6_lease); |
b3fac19f | 254 | |
1a6bb31f | 255 | link->ndisc = sd_ndisc_unref(link->ndisc); |
b3fac19f YW |
256 | link->ndisc_expire = sd_event_source_disable_unref(link->ndisc_expire); |
257 | ndisc_flush(link); | |
258 | ||
1a6bb31f YW |
259 | link->radv = sd_radv_unref(link->radv); |
260 | } | |
261 | ||
4cf443e6 | 262 | static Link* link_free(Link *link) { |
8301aa0b | 263 | assert(link); |
f579559b | 264 | |
22583a00 | 265 | (void) link_clear_sysctl_shadows(link); |
6d9ef22a | 266 | |
15761549 YW |
267 | link_ntp_settings_clear(link); |
268 | link_dns_settings_clear(link); | |
269 | ||
8eec0b9d | 270 | link->neighbors = set_free(link->neighbors); |
8eec0b9d | 271 | link->addresses = set_free(link->addresses); |
3a67b8bb YW |
272 | link->qdiscs = set_free(link->qdiscs); |
273 | link->tclasses = set_free(link->tclasses); | |
adda1ed9 | 274 | |
a27588d4 | 275 | link->dhcp_pd_prefixes = set_free(link->dhcp_pd_prefixes); |
4b409e85 | 276 | |
1a6bb31f | 277 | link_free_engines(link); |
49699bac | 278 | |
b0ff6dea | 279 | set_free(link->sr_iov_virt_port_ifindices); |
c166a070 | 280 | free(link->ifname); |
572b21d9 | 281 | strv_free(link->alternative_names); |
ceac4078 | 282 | free(link->kind); |
8d968fdd | 283 | free(link->ssid); |
6706ce2f | 284 | free(link->previous_ssid); |
c643bda5 | 285 | free(link->driver); |
6cad256d | 286 | |
a34e58d4 | 287 | unlink_and_free(link->lease_file); |
a34e58d4 | 288 | unlink_and_free(link->state_file); |
c166a070 | 289 | |
8de56fb3 | 290 | sd_device_unref(link->dev); |
9aa2585e | 291 | netdev_unref(link->netdev); |
b5db00e5 | 292 | |
0d4ad91d | 293 | hashmap_free(link->bound_to_links); |
0d4ad91d AR |
294 | hashmap_free(link->bound_by_links); |
295 | ||
4cf443e6 | 296 | set_free(link->slaves); |
033295c1 | 297 | |
c9c908a6 YW |
298 | network_unref(link->network); |
299 | ||
6706ce2f | 300 | sd_event_source_disable_unref(link->carrier_lost_timer); |
39283a1f | 301 | sd_event_source_disable_unref(link->ipv6_mtu_wait_synced_event_source); |
6706ce2f | 302 | |
8301aa0b | 303 | return mfree(link); |
14b746f7 TG |
304 | } |
305 | ||
8301aa0b | 306 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 307 | |
4cf443e6 YW |
308 | DEFINE_HASH_OPS_WITH_VALUE_DESTRUCTOR( |
309 | link_hash_ops, | |
310 | void, trivial_hash_func, trivial_compare_func, | |
311 | Link, link_unref); | |
312 | ||
6eab614d | 313 | int link_get_by_index(Manager *m, int ifindex, Link **ret) { |
11a7f229 | 314 | Link *link; |
11a7f229 TG |
315 | |
316 | assert(m); | |
c2aed128 YW |
317 | |
318 | if (ifindex <= 0) | |
319 | return -EINVAL; | |
11a7f229 | 320 | |
6eab614d | 321 | link = hashmap_get(m->links_by_index, INT_TO_PTR(ifindex)); |
11a7f229 TG |
322 | if (!link) |
323 | return -ENODEV; | |
324 | ||
0b54c870 YW |
325 | if (ret) |
326 | *ret = link; | |
327 | return 0; | |
328 | } | |
329 | ||
330 | int link_get_by_name(Manager *m, const char *ifname, Link **ret) { | |
331 | Link *link; | |
332 | ||
333 | assert(m); | |
334 | assert(ifname); | |
11a7f229 | 335 | |
0b54c870 YW |
336 | link = hashmap_get(m->links_by_name, ifname); |
337 | if (!link) | |
338 | return -ENODEV; | |
339 | ||
340 | if (ret) | |
341 | *ret = link; | |
11a7f229 TG |
342 | return 0; |
343 | } | |
344 | ||
fe321d45 YW |
345 | int link_get_by_hw_addr(Manager *m, const struct hw_addr_data *hw_addr, Link **ret) { |
346 | Link *link; | |
347 | ||
348 | assert(m); | |
349 | assert(hw_addr); | |
350 | ||
351 | link = hashmap_get(m->links_by_hw_addr, hw_addr); | |
352 | if (!link) | |
353 | return -ENODEV; | |
354 | ||
355 | if (ret) | |
356 | *ret = link; | |
357 | return 0; | |
358 | } | |
359 | ||
81357285 YW |
360 | int link_get_master(Link *link, Link **ret) { |
361 | assert(link); | |
362 | assert(link->manager); | |
363 | assert(ret); | |
364 | ||
365 | if (link->master_ifindex <= 0 || link->master_ifindex == link->ifindex) | |
366 | return -ENODEV; | |
367 | ||
6eab614d | 368 | return link_get_by_index(link->manager, link->master_ifindex, ret); |
81357285 YW |
369 | } |
370 | ||
af9ba57a | 371 | void link_set_state(Link *link, LinkState state) { |
e331e246 TG |
372 | assert(link); |
373 | ||
374 | if (link->state == state) | |
375 | return; | |
376 | ||
0beb9542 YW |
377 | log_link_debug(link, "State changed: %s -> %s", |
378 | link_state_to_string(link->state), | |
379 | link_state_to_string(state)); | |
380 | ||
e331e246 TG |
381 | link->state = state; |
382 | ||
38c9ca53 | 383 | link_send_changed(link, "AdministrativeState"); |
9092113d | 384 | link_dirty(link); |
e331e246 TG |
385 | } |
386 | ||
80a89d1a | 387 | int link_stop_engines(Link *link, bool may_keep_dynamic) { |
372acaad | 388 | int r, ret = 0; |
111bb8f9 TG |
389 | |
390 | assert(link); | |
391 | assert(link->manager); | |
392 | assert(link->manager->event); | |
393 | ||
80a89d1a YW |
394 | bool keep_dynamic = |
395 | may_keep_dynamic && | |
8c3d6d71 YW |
396 | link->network && |
397 | (link->manager->state == MANAGER_RESTARTING || | |
80a89d1a | 398 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DYNAMIC_ON_STOP)); |
80060352 | 399 | |
80a89d1a | 400 | if (!keep_dynamic) { |
372acaad YW |
401 | r = sd_dhcp_client_stop(link->dhcp_client); |
402 | if (r < 0) | |
403 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not stop DHCPv4 client: %m")); | |
4eca221a YW |
404 | |
405 | r = sd_ipv4ll_stop(link->ipv4ll); | |
406 | if (r < 0) | |
407 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m")); | |
408 | ||
409 | r = sd_dhcp6_client_stop(link->dhcp6_client); | |
410 | if (r < 0) | |
411 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m")); | |
412 | ||
413 | r = dhcp_pd_remove(link, /* only_marked = */ false); | |
414 | if (r < 0) | |
415 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not remove DHCPv6 PD addresses and routes: %m")); | |
416 | ||
417 | r = ndisc_stop(link); | |
418 | if (r < 0) | |
419 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not stop IPv6 Router Discovery: %m")); | |
420 | ||
421 | ndisc_flush(link); | |
111bb8f9 TG |
422 | } |
423 | ||
372acaad YW |
424 | r = sd_dhcp_server_stop(link->dhcp_server); |
425 | if (r < 0) | |
426 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not stop DHCPv4 server: %m")); | |
2a99eed0 | 427 | |
372acaad YW |
428 | r = sd_lldp_rx_stop(link->lldp_rx); |
429 | if (r < 0) | |
430 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not stop LLDP Rx: %m")); | |
c01b9b87 | 431 | |
372acaad YW |
432 | r = sd_lldp_tx_stop(link->lldp_tx); |
433 | if (r < 0) | |
434 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not stop LLDP Tx: %m")); | |
9cc65242 | 435 | |
372acaad YW |
436 | r = ipv4acd_stop(link); |
437 | if (r < 0) | |
438 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not stop IPv4 ACD client: %m")); | |
051e77ca | 439 | |
372acaad YW |
440 | r = sd_radv_stop(link->radv); |
441 | if (r < 0) | |
442 | RET_GATHER(ret, log_link_warning_errno(link, r, "Could not stop IPv6 Router Advertisement: %m")); | |
7465dd22 | 443 | |
372acaad | 444 | return ret; |
111bb8f9 TG |
445 | } |
446 | ||
b22d8a00 | 447 | void link_enter_failed(Link *link) { |
ef1ba606 | 448 | assert(link); |
f882c247 | 449 | |
370e9930 | 450 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
451 | return; |
452 | ||
6a7a4e4d | 453 | log_link_warning(link, "Failed"); |
449f7554 | 454 | |
e331e246 | 455 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 456 | |
c2eb7753 YW |
457 | if (!ratelimit_below(&link->automatic_reconfigure_ratelimit)) { |
458 | log_link_warning(link, "The interface entered the failed state frequently, refusing to reconfigure it automatically."); | |
459 | goto stop; | |
460 | } | |
461 | ||
462 | log_link_info(link, "Trying to reconfigure the interface."); | |
2b07a321 | 463 | if (link_reconfigure(link, LINK_RECONFIGURE_UNCONDITIONALLY) > 0) |
021d39d3 | 464 | return; |
c2eb7753 YW |
465 | |
466 | stop: | |
80a89d1a | 467 | (void) link_stop_engines(link, /* may_keep_dynamic = */ false); |
f882c247 TG |
468 | } |
469 | ||
6accfd31 DA |
470 | void link_check_ready(Link *link) { |
471 | Address *a; | |
6accfd31 DA |
472 | |
473 | assert(link); | |
474 | ||
5f58af25 YW |
475 | if (link->state == LINK_STATE_CONFIGURED) |
476 | return; | |
477 | ||
d19b9939 YW |
478 | if (link->state != LINK_STATE_CONFIGURING) |
479 | return (void) log_link_debug(link, "%s(): link is in %s state.", __func__, link_state_to_string(link->state)); | |
6accfd31 DA |
480 | |
481 | if (!link->network) | |
a7f07cbe | 482 | return (void) log_link_debug(link, "%s(): link is unmanaged.", __func__); |
6accfd31 | 483 | |
7558f9e7 YW |
484 | if (!link->tc_configured) |
485 | return (void) log_link_debug(link, "%s(): traffic controls are not configured.", __func__); | |
600b7898 | 486 | |
a7f07cbe YW |
487 | if (link->set_link_messages > 0) |
488 | return (void) log_link_debug(link, "%s(): link layer is configuring.", __func__); | |
489 | ||
490 | if (!link->activated) | |
491 | return (void) log_link_debug(link, "%s(): link is not activated.", __func__); | |
492 | ||
24b9c341 | 493 | if (link->iftype == ARPHRD_CAN) |
7558f9e7 | 494 | /* let's shortcut things for CAN which doesn't need most of checks below. */ |
24b9c341 | 495 | goto ready; |
7558f9e7 | 496 | |
879377ca YW |
497 | if (!link->stacked_netdevs_created) |
498 | return (void) log_link_debug(link, "%s(): stacked netdevs are not created.", __func__); | |
499 | ||
76c5a0f2 | 500 | if (!link->static_addresses_configured) |
d19b9939 | 501 | return (void) log_link_debug(link, "%s(): static addresses are not configured.", __func__); |
6accfd31 | 502 | |
354bc760 YW |
503 | if (!link->static_address_labels_configured) |
504 | return (void) log_link_debug(link, "%s(): static address labels are not configured.", __func__); | |
505 | ||
e5b35bf6 YW |
506 | if (!link->static_bridge_fdb_configured) |
507 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
508 | ||
ff9e0783 YW |
509 | if (!link->static_bridge_mdb_configured) |
510 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
511 | ||
fdeba3f5 YW |
512 | if (!link->static_ipv6_proxy_ndp_configured) |
513 | return (void) log_link_debug(link, "%s(): static IPv6 proxy NDP addresses are not configured.", __func__); | |
514 | ||
40ca350e YW |
515 | if (!link->static_neighbors_configured) |
516 | return (void) log_link_debug(link, "%s(): static neighbors are not configured.", __func__); | |
517 | ||
d19b9939 YW |
518 | if (!link->static_nexthops_configured) |
519 | return (void) log_link_debug(link, "%s(): static nexthops are not configured.", __func__); | |
c16c7808 | 520 | |
76c5a0f2 YW |
521 | if (!link->static_routes_configured) |
522 | return (void) log_link_debug(link, "%s(): static routes are not configured.", __func__); | |
523 | ||
0e5ef6be | 524 | if (!link->static_routing_policy_rules_configured) |
d19b9939 | 525 | return (void) log_link_debug(link, "%s(): static routing policy rules are not configured.", __func__); |
6accfd31 | 526 | |
d19b9939 YW |
527 | if (!link->sr_iov_configured) |
528 | return (void) log_link_debug(link, "%s(): SR-IOV is not configured.", __func__); | |
518cd6b5 | 529 | |
4bcb8625 YW |
530 | /* IPv6LL is assigned after the link gains its carrier. */ |
531 | if (!link->network->configure_without_carrier && | |
532 | link_ipv6ll_enabled(link) && | |
533 | !in6_addr_is_set(&link->ipv6ll_address)) | |
534 | return (void) log_link_debug(link, "%s(): IPv6LL is not configured yet.", __func__); | |
535 | ||
9e7d91ed YW |
536 | /* All static addresses must be ready. */ |
537 | bool has_static_address = false; | |
538 | SET_FOREACH(a, link->addresses) { | |
539 | if (a->source != NETWORK_CONFIG_SOURCE_STATIC) | |
540 | continue; | |
541 | if (!address_is_ready(a)) | |
542 | return (void) log_link_debug(link, "%s(): static address %s is not ready.", __func__, | |
543 | IN_ADDR_PREFIX_TO_STRING(a->family, &a->in_addr, a->prefixlen)); | |
544 | has_static_address = true; | |
545 | } | |
546 | ||
547 | /* If at least one static address is requested, do not request that dynamic addressing protocols are finished. */ | |
548 | if (has_static_address) | |
549 | goto ready; | |
550 | ||
5f950e56 YW |
551 | /* If no dynamic addressing protocol enabled, assume the interface is ready. |
552 | * Note, ignore NDisc when ConfigureWithoutCarrier= is enabled, as IPv6AcceptRA= is enabled by default. */ | |
553 | if (!link_ipv4ll_enabled(link) && !link_dhcp4_enabled(link) && | |
554 | !link_dhcp6_enabled(link) && !link_dhcp_pd_is_enabled(link) && | |
52672db3 | 555 | (link->network->configure_without_carrier || !link_ndisc_enabled(link))) |
5f950e56 YW |
556 | goto ready; |
557 | ||
558 | bool ipv4ll_ready = | |
559 | link_ipv4ll_enabled(link) && link->ipv4ll_address_configured && | |
560 | link_check_addresses_ready(link, NETWORK_CONFIG_SOURCE_IPV4LL); | |
561 | bool dhcp4_ready = | |
562 | link_dhcp4_enabled(link) && link->dhcp4_configured && | |
563 | link_check_addresses_ready(link, NETWORK_CONFIG_SOURCE_DHCP4); | |
564 | bool dhcp6_ready = | |
565 | link_dhcp6_enabled(link) && link->dhcp6_configured && | |
566 | (!link->network->dhcp6_use_address || | |
567 | link_check_addresses_ready(link, NETWORK_CONFIG_SOURCE_DHCP6)); | |
568 | bool dhcp_pd_ready = | |
569 | link_dhcp_pd_is_enabled(link) && link->dhcp_pd_configured && | |
570 | (!link->network->dhcp_pd_assign || | |
571 | link_check_addresses_ready(link, NETWORK_CONFIG_SOURCE_DHCP_PD)); | |
572 | bool ndisc_ready = | |
52672db3 YW |
573 | link_ndisc_enabled(link) && link->ndisc_configured && |
574 | (!link->network->ndisc_use_autonomous_prefix || | |
5f950e56 YW |
575 | link_check_addresses_ready(link, NETWORK_CONFIG_SOURCE_NDISC)); |
576 | ||
195b83ed YW |
577 | /* If the uplink for PD is self, then request the corresponding DHCP protocol is also ready. */ |
578 | if (dhcp_pd_is_uplink(link, link, /* accept_auto = */ false)) { | |
579 | if (link_dhcp4_enabled(link) && link->network->dhcp_use_6rd && | |
0ad8d953 | 580 | sd_dhcp_lease_has_6rd(link->dhcp_lease)) { |
b4054aff | 581 | if (!link->dhcp4_configured) |
195b83ed YW |
582 | return (void) log_link_debug(link, "%s(): DHCPv4 6rd prefix is assigned, but DHCPv4 protocol is not finished yet.", __func__); |
583 | if (!dhcp_pd_ready) | |
584 | return (void) log_link_debug(link, "%s(): DHCPv4 is finished, but prefix acquired by DHCPv4-6rd is not assigned yet.", __func__); | |
585 | } | |
586 | ||
587 | if (link_dhcp6_enabled(link) && link->network->dhcp6_use_pd_prefix && | |
fb70992d | 588 | sd_dhcp6_lease_has_pd_prefix(link->dhcp6_lease)) { |
b4054aff | 589 | if (!link->dhcp6_configured) |
195b83ed YW |
590 | return (void) log_link_debug(link, "%s(): DHCPv6 IA_PD prefix is assigned, but DHCPv6 protocol is not finished yet.", __func__); |
591 | if (!dhcp_pd_ready) | |
592 | return (void) log_link_debug(link, "%s(): DHCPv6 is finished, but prefix acquired by DHCPv6 IA_PD is not assigned yet.", __func__); | |
593 | } | |
594 | } | |
595 | ||
5f950e56 YW |
596 | /* At least one dynamic addressing protocol is finished. */ |
597 | if (!ipv4ll_ready && !dhcp4_ready && !dhcp6_ready && !dhcp_pd_ready && !ndisc_ready) | |
598 | return (void) log_link_debug(link, "%s(): dynamic addressing protocols are enabled but none of them finished yet.", __func__); | |
599 | ||
600 | log_link_debug(link, "%s(): IPv4LL:%s DHCPv4:%s DHCPv6:%s DHCP-PD:%s NDisc:%s", | |
601 | __func__, | |
602 | yes_no(ipv4ll_ready), | |
603 | yes_no(dhcp4_ready), | |
604 | yes_no(dhcp6_ready), | |
605 | yes_no(dhcp_pd_ready), | |
606 | yes_no(ndisc_ready)); | |
607 | ||
608 | ready: | |
29836c16 | 609 | link_set_state(link, LINK_STATE_CONFIGURED); |
6accfd31 DA |
610 | } |
611 | ||
97108953 | 612 | static int link_request_static_configs(Link *link) { |
f882c247 TG |
613 | int r; |
614 | ||
615 | assert(link); | |
616 | assert(link->network); | |
f5be5601 | 617 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 618 | |
354bc760 | 619 | r = link_request_static_addresses(link); |
0e5ef6be YW |
620 | if (r < 0) |
621 | return r; | |
622 | ||
354bc760 | 623 | r = link_request_static_address_labels(link); |
f3ef324d YW |
624 | if (r < 0) |
625 | return r; | |
e4a71bf3 | 626 | |
e5b35bf6 YW |
627 | r = link_request_static_bridge_fdb(link); |
628 | if (r < 0) | |
629 | return r; | |
630 | ||
9a038aac YW |
631 | r = link_request_static_bridge_mdb(link); |
632 | if (r < 0) | |
633 | return r; | |
634 | ||
fdeba3f5 YW |
635 | r = link_request_static_ipv6_proxy_ndp_addresses(link); |
636 | if (r < 0) | |
637 | return r; | |
638 | ||
40ca350e | 639 | r = link_request_static_neighbors(link); |
682c65b0 YW |
640 | if (r < 0) |
641 | return r; | |
bd6379ec | 642 | |
76c5a0f2 | 643 | r = link_request_static_nexthops(link, false); |
fe2bc17c YW |
644 | if (r < 0) |
645 | return r; | |
f882c247 | 646 | |
76c5a0f2 YW |
647 | r = link_request_static_routes(link, false); |
648 | if (r < 0) | |
649 | return r; | |
650 | ||
651 | r = link_request_static_routing_policy_rules(link); | |
5ae0fb7f YW |
652 | if (r < 0) |
653 | return r; | |
d4cdbea5 | 654 | |
f882c247 TG |
655 | return 0; |
656 | } | |
657 | ||
b8b0c1a0 | 658 | int link_request_stacked_netdevs(Link *link, NetDevLocalAddressType type) { |
1187fc33 | 659 | NetDev *netdev; |
e16e4b3b DS |
660 | int r; |
661 | ||
662 | assert(link); | |
663 | ||
b8b0c1a0 YW |
664 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) |
665 | return 0; | |
666 | ||
667 | assert(link->network); | |
668 | ||
1187fc33 | 669 | link->stacked_netdevs_created = false; |
e16e4b3b | 670 | |
1187fc33 | 671 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
b8b0c1a0 YW |
672 | if (!netdev_needs_reconfigure(netdev, type)) |
673 | continue; | |
674 | ||
b14686ff | 675 | r = link_request_stacked_netdev(link, netdev); |
1187fc33 YW |
676 | if (r < 0) |
677 | return r; | |
678 | } | |
e16e4b3b | 679 | |
bb916f35 | 680 | if (link->create_stacked_netdev_messages == 0) { |
1187fc33 | 681 | link->stacked_netdevs_created = true; |
bb916f35 YW |
682 | link_check_ready(link); |
683 | } | |
e16e4b3b DS |
684 | |
685 | return 0; | |
686 | } | |
687 | ||
8566df79 | 688 | static int link_acquire_dynamic_ipv6_conf(Link *link) { |
e7ab854c TG |
689 | int r; |
690 | ||
691 | assert(link); | |
692 | ||
0f96a823 YW |
693 | r = radv_start(link); |
694 | if (r < 0) | |
695 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Advertisement engine: %m"); | |
7465dd22 | 696 | |
294f129b YW |
697 | r = ndisc_start(link); |
698 | if (r < 0) | |
699 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Discovery: %m"); | |
cd305af1 | 700 | |
294f129b YW |
701 | r = dhcp6_start(link); |
702 | if (r < 0) | |
703 | return log_link_warning_errno(link, r, "Failed to start DHCPv6 client: %m"); | |
cd305af1 | 704 | |
e7ab854c TG |
705 | return 0; |
706 | } | |
707 | ||
8566df79 | 708 | static int link_acquire_dynamic_ipv4_conf(Link *link) { |
ff254138 TG |
709 | int r; |
710 | ||
711 | assert(link); | |
ff254138 TG |
712 | assert(link->manager); |
713 | assert(link->manager->event); | |
714 | ||
0107b769 | 715 | if (link->dhcp_client) { |
294f129b | 716 | r = dhcp4_start(link); |
0107b769 | 717 | if (r < 0) |
294f129b | 718 | return log_link_warning_errno(link, r, "Failed to start DHCPv4 client: %m"); |
0107b769 | 719 | |
ccffa166 | 720 | log_link_debug(link, "Acquiring DHCPv4 lease."); |
5c1d3fc9 | 721 | |
ccffa166 | 722 | } else if (link->ipv4ll) { |
59c27231 AK |
723 | if (in4_addr_is_set(&link->network->ipv4ll_start_address)) { |
724 | r = sd_ipv4ll_set_address(link->ipv4ll, &link->network->ipv4ll_start_address); | |
725 | if (r < 0) | |
726 | return log_link_warning_errno(link, r, "Could not set IPv4 link-local start address: %m"); | |
727 | } | |
728 | ||
b5c83cd5 | 729 | r = ipv4ll_start(link); |
6a7a4e4d LP |
730 | if (r < 0) |
731 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
b5c83cd5 YW |
732 | if (r > 0) |
733 | log_link_debug(link, "Acquiring IPv4 link-local address."); | |
5c1d3fc9 UTL |
734 | } |
735 | ||
c91f8f90 YW |
736 | r = link_start_dhcp4_server(link); |
737 | if (r < 0) | |
738 | return log_link_warning_errno(link, r, "Could not start DHCP server: %m"); | |
ab486ef4 | 739 | |
76a86ffd YW |
740 | r = ipv4acd_start(link); |
741 | if (r < 0) | |
742 | return log_link_warning_errno(link, r, "Could not start IPv4 ACD client: %m"); | |
743 | ||
6fc25497 SS |
744 | return 0; |
745 | } | |
746 | ||
8566df79 | 747 | static int link_acquire_dynamic_conf(Link *link) { |
6fc25497 SS |
748 | int r; |
749 | ||
750 | assert(link); | |
0f96a823 | 751 | assert(link->network); |
6fc25497 | 752 | |
8566df79 | 753 | r = link_acquire_dynamic_ipv4_conf(link); |
6fc25497 SS |
754 | if (r < 0) |
755 | return r; | |
756 | ||
94876904 | 757 | if (in6_addr_is_set(&link->ipv6ll_address)) { |
8566df79 | 758 | r = link_acquire_dynamic_ipv6_conf(link); |
6fc25497 SS |
759 | if (r < 0) |
760 | return r; | |
761 | } | |
762 | ||
a27588d4 | 763 | if (!link_radv_enabled(link) || !link->network->dhcp_pd_announce) { |
0f96a823 YW |
764 | /* DHCPv6PD downstream does not require IPv6LL address. But may require RADV to be |
765 | * configured, and RADV may not be configured yet here. Only acquire subnet prefix when | |
766 | * RADV is disabled, or the announcement of the prefix is disabled. Otherwise, the | |
767 | * below will be called in radv_start(). */ | |
a27588d4 | 768 | r = dhcp_request_prefix_delegation(link); |
0f96a823 | 769 | if (r < 0) |
a27588d4 | 770 | return log_link_warning_errno(link, r, "Failed to request DHCP delegated subnet prefix: %m"); |
0f96a823 YW |
771 | } |
772 | ||
c01b9b87 YW |
773 | if (link->lldp_tx) { |
774 | r = sd_lldp_tx_start(link->lldp_tx); | |
775 | if (r < 0) | |
776 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
777 | } | |
8e1ad1ea | 778 | |
35778343 YW |
779 | if (link->lldp_rx) { |
780 | r = sd_lldp_rx_start(link->lldp_rx); | |
f8549910 YW |
781 | if (r < 0) |
782 | return log_link_warning_errno(link, r, "Failed to start LLDP client: %m"); | |
783 | } | |
784 | ||
ff254138 TG |
785 | return 0; |
786 | } | |
787 | ||
7657ec3e | 788 | int link_ipv6ll_gained(Link *link) { |
0c9ee5d5 | 789 | int r; |
deb2e523 | 790 | |
0c9ee5d5 | 791 | assert(link); |
deb2e523 | 792 | |
0c9ee5d5 | 793 | log_link_info(link, "Gained IPv6LL"); |
deb2e523 | 794 | |
7657ec3e YW |
795 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) |
796 | return 0; | |
0c9ee5d5 | 797 | |
7657ec3e YW |
798 | r = link_acquire_dynamic_ipv6_conf(link); |
799 | if (r < 0) | |
800 | return r; | |
0c9ee5d5 | 801 | |
b8b0c1a0 YW |
802 | r = link_request_stacked_netdevs(link, NETDEV_LOCAL_ADDRESS_IPV6LL); |
803 | if (r < 0) | |
804 | return r; | |
805 | ||
7657ec3e | 806 | link_check_ready(link); |
0c9ee5d5 | 807 | return 0; |
deb2e523 TG |
808 | } |
809 | ||
112a0972 | 810 | int link_handle_bound_to_list(Link *link) { |
0d4ad91d AR |
811 | bool required_up = false; |
812 | bool link_is_up = false; | |
852a3916 | 813 | Link *l; |
0d4ad91d AR |
814 | |
815 | assert(link); | |
816 | ||
ad82f0c3 YW |
817 | /* If at least one interface in bound_to_links has carrier, then make this interface up. |
818 | * If all interfaces in bound_to_links do not, then make this interface down. */ | |
819 | ||
0d4ad91d AR |
820 | if (hashmap_isempty(link->bound_to_links)) |
821 | return 0; | |
822 | ||
823 | if (link->flags & IFF_UP) | |
824 | link_is_up = true; | |
825 | ||
852a3916 | 826 | HASHMAP_FOREACH(l, link->bound_to_links) |
0d4ad91d AR |
827 | if (link_has_carrier(l)) { |
828 | required_up = true; | |
829 | break; | |
830 | } | |
831 | ||
852a3916 | 832 | if (!required_up && link_is_up) |
68f52063 | 833 | return link_request_to_bring_up_or_down(link, /* up = */ false); |
852a3916 | 834 | if (required_up && !link_is_up) |
68f52063 | 835 | return link_request_to_bring_up_or_down(link, /* up = */ true); |
0d4ad91d AR |
836 | |
837 | return 0; | |
838 | } | |
839 | ||
840 | static int link_handle_bound_by_list(Link *link) { | |
0d4ad91d AR |
841 | Link *l; |
842 | int r; | |
843 | ||
844 | assert(link); | |
845 | ||
ad82f0c3 YW |
846 | /* Update up or down state of interfaces which depend on this interface's carrier state. */ |
847 | ||
852a3916 | 848 | HASHMAP_FOREACH(l, link->bound_by_links) { |
0d4ad91d AR |
849 | r = link_handle_bound_to_list(l); |
850 | if (r < 0) | |
851 | return r; | |
852 | } | |
853 | ||
854 | return 0; | |
855 | } | |
856 | ||
857 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
858 | int r; | |
859 | ||
860 | assert(link); | |
861 | assert(carrier); | |
862 | ||
863 | if (link == carrier) | |
864 | return 0; | |
865 | ||
866 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
867 | return 0; | |
868 | ||
190b3b5c | 869 | r = hashmap_ensure_put(h, NULL, INT_TO_PTR(carrier->ifindex), carrier); |
0d4ad91d AR |
870 | if (r < 0) |
871 | return r; | |
872 | ||
9092113d YW |
873 | link_dirty(link); |
874 | ||
0d4ad91d AR |
875 | return 0; |
876 | } | |
877 | ||
878 | static int link_new_bound_by_list(Link *link) { | |
879 | Manager *m; | |
880 | Link *carrier; | |
0d4ad91d | 881 | int r; |
0d4ad91d AR |
882 | |
883 | assert(link); | |
884 | assert(link->manager); | |
885 | ||
886 | m = link->manager; | |
887 | ||
6eab614d | 888 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
0d4ad91d AR |
889 | if (!carrier->network) |
890 | continue; | |
891 | ||
892 | if (strv_isempty(carrier->network->bind_carrier)) | |
893 | continue; | |
894 | ||
191a3f16 | 895 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname)) { |
0d4ad91d AR |
896 | r = link_put_carrier(link, carrier, &link->bound_by_links); |
897 | if (r < 0) | |
898 | return r; | |
0d4ad91d AR |
899 | } |
900 | } | |
901 | ||
90e74a66 | 902 | HASHMAP_FOREACH(carrier, link->bound_by_links) { |
0d4ad91d AR |
903 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
904 | if (r < 0) | |
905 | return r; | |
0d4ad91d AR |
906 | } |
907 | ||
908 | return 0; | |
909 | } | |
910 | ||
911 | static int link_new_bound_to_list(Link *link) { | |
912 | Manager *m; | |
913 | Link *carrier; | |
0d4ad91d | 914 | int r; |
0d4ad91d AR |
915 | |
916 | assert(link); | |
917 | assert(link->manager); | |
918 | ||
919 | if (!link->network) | |
920 | return 0; | |
921 | ||
922 | if (strv_isempty(link->network->bind_carrier)) | |
923 | return 0; | |
924 | ||
925 | m = link->manager; | |
926 | ||
6eab614d | 927 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
191a3f16 | 928 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname)) { |
0d4ad91d AR |
929 | r = link_put_carrier(link, carrier, &link->bound_to_links); |
930 | if (r < 0) | |
931 | return r; | |
0d4ad91d AR |
932 | } |
933 | } | |
934 | ||
852a3916 | 935 | HASHMAP_FOREACH(carrier, link->bound_to_links) { |
0d4ad91d AR |
936 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); |
937 | if (r < 0) | |
938 | return r; | |
0d4ad91d AR |
939 | } |
940 | ||
941 | return 0; | |
942 | } | |
943 | ||
0d4ad91d | 944 | static void link_free_bound_to_list(Link *link) { |
9092113d | 945 | bool updated = false; |
0d4ad91d | 946 | Link *bound_to; |
0d4ad91d | 947 | |
9092113d YW |
948 | assert(link); |
949 | ||
950 | while ((bound_to = hashmap_steal_first(link->bound_to_links))) { | |
951 | updated = true; | |
0d4ad91d AR |
952 | |
953 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 954 | link_dirty(bound_to); |
0d4ad91d AR |
955 | } |
956 | ||
9092113d YW |
957 | if (updated) |
958 | link_dirty(link); | |
0d4ad91d AR |
959 | } |
960 | ||
961 | static void link_free_bound_by_list(Link *link) { | |
9092113d | 962 | bool updated = false; |
0d4ad91d | 963 | Link *bound_by; |
0d4ad91d | 964 | |
9092113d YW |
965 | assert(link); |
966 | ||
967 | while ((bound_by = hashmap_steal_first(link->bound_by_links))) { | |
968 | updated = true; | |
0d4ad91d AR |
969 | |
970 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 971 | link_dirty(bound_by); |
0d4ad91d AR |
972 | link_handle_bound_to_list(bound_by); |
973 | } | |
974 | } | |
975 | ||
9092113d YW |
976 | if (updated) |
977 | link_dirty(link); | |
0d4ad91d AR |
978 | } |
979 | ||
81357285 | 980 | static int link_append_to_master(Link *link) { |
5f707e12 YW |
981 | Link *master; |
982 | int r; | |
983 | ||
984 | assert(link); | |
5f707e12 | 985 | |
81357285 YW |
986 | /* - The link may have no master. |
987 | * - RTM_NEWLINK message about master interface may not be received yet. */ | |
988 | if (link_get_master(link, &master) < 0) | |
989 | return 0; | |
5f707e12 | 990 | |
4cf443e6 | 991 | r = set_ensure_put(&master->slaves, &link_hash_ops, link); |
38288f0b | 992 | if (r <= 0) |
5f707e12 YW |
993 | return r; |
994 | ||
995 | link_ref(link); | |
996 | return 0; | |
997 | } | |
998 | ||
81357285 | 999 | static void link_drop_from_master(Link *link) { |
5f707e12 YW |
1000 | Link *master; |
1001 | ||
1002 | assert(link); | |
1003 | ||
81357285 | 1004 | if (!link->manager) |
5f707e12 YW |
1005 | return; |
1006 | ||
81357285 | 1007 | if (link_get_master(link, &master) < 0) |
5f707e12 YW |
1008 | return; |
1009 | ||
1010 | link_unref(set_remove(master->slaves, link)); | |
1011 | } | |
1012 | ||
4303e980 | 1013 | static int link_drop_requests(Link *link) { |
56001f02 | 1014 | Request *req; |
4303e980 | 1015 | int ret = 0; |
56001f02 YW |
1016 | |
1017 | assert(link); | |
1018 | assert(link->manager); | |
1019 | ||
4303e980 YW |
1020 | ORDERED_SET_FOREACH(req, link->manager->request_queue) { |
1021 | if (req->link != link) | |
1022 | continue; | |
1023 | ||
1024 | /* If the request is already called, but its reply is not received, then we need to | |
1025 | * drop the configuration (e.g. address) here. Note, if the configuration is known, | |
dd6d53a8 | 1026 | * it will be handled later by link_drop_unmanaged_addresses() or so. */ |
4303e980 YW |
1027 | if (req->waiting_reply && link->state != LINK_STATE_LINGER) |
1028 | switch (req->type) { | |
1029 | case REQUEST_TYPE_ADDRESS: { | |
1030 | Address *address = ASSERT_PTR(req->userdata); | |
1031 | ||
1032 | if (address_get(link, address, NULL) < 0) | |
1033 | RET_GATHER(ret, address_remove(address, link)); | |
1034 | break; | |
1035 | } | |
c902fa08 YW |
1036 | case REQUEST_TYPE_NEIGHBOR: { |
1037 | Neighbor *neighbor = ASSERT_PTR(req->userdata); | |
1038 | ||
1039 | if (neighbor_get(link, neighbor, NULL) < 0) | |
1040 | RET_GATHER(ret, neighbor_remove(neighbor, link)); | |
1041 | break; | |
1042 | } | |
9a988d16 YW |
1043 | case REQUEST_TYPE_NEXTHOP: { |
1044 | NextHop *nexthop = ASSERT_PTR(req->userdata); | |
1045 | ||
1046 | if (nexthop_get_by_id(link->manager, nexthop->id, NULL) < 0) | |
1047 | RET_GATHER(ret, nexthop_remove(nexthop, link->manager)); | |
1048 | break; | |
1049 | } | |
97979ece YW |
1050 | case REQUEST_TYPE_ROUTE: { |
1051 | Route *route = ASSERT_PTR(req->userdata); | |
1052 | ||
1053 | if (route_get(link->manager, route, NULL) < 0) | |
1054 | RET_GATHER(ret, route_remove(route, link->manager)); | |
1055 | break; | |
1056 | } | |
4303e980 YW |
1057 | default: |
1058 | ; | |
1059 | } | |
1060 | ||
b9b5096e | 1061 | request_detach(req); |
4303e980 YW |
1062 | } |
1063 | ||
1064 | return ret; | |
56001f02 YW |
1065 | } |
1066 | ||
cc2d7efc | 1067 | static Link *link_drop(Link *link) { |
63130eb3 | 1068 | if (!link) |
cc2d7efc | 1069 | return NULL; |
0d4ad91d | 1070 | |
63130eb3 YW |
1071 | assert(link->manager); |
1072 | ||
0d4ad91d AR |
1073 | link_set_state(link, LINK_STATE_LINGER); |
1074 | ||
63130eb3 YW |
1075 | /* Drop all references from other links and manager. Note that async netlink calls may have |
1076 | * references to the link, and they will be dropped when we receive replies. */ | |
1077 | ||
4303e980 | 1078 | (void) link_drop_requests(link); |
56001f02 | 1079 | |
bb193d2d YW |
1080 | link_free_bound_to_list(link); |
1081 | link_free_bound_by_list(link); | |
0d4ad91d | 1082 | |
b0ff6dea YW |
1083 | link_clear_sr_iov_ifindices(link); |
1084 | ||
81357285 | 1085 | link_drop_from_master(link); |
5f707e12 | 1086 | |
4c78dc17 YW |
1087 | if (link->state_file) |
1088 | (void) unlink(link->state_file); | |
1089 | ||
63130eb3 YW |
1090 | link_clean(link); |
1091 | ||
0b54c870 YW |
1092 | STRV_FOREACH(n, link->alternative_names) |
1093 | hashmap_remove(link->manager->links_by_name, *n); | |
0b54c870 YW |
1094 | hashmap_remove(link->manager->links_by_name, link->ifname); |
1095 | ||
fe321d45 | 1096 | /* bonding master and its slaves have the same hardware address. */ |
e74f1d07 | 1097 | hashmap_remove_value(link->manager->links_by_hw_addr, &link->hw_addr, link); |
fe321d45 | 1098 | |
63130eb3 | 1099 | /* The following must be called at last. */ |
6eab614d | 1100 | assert_se(hashmap_remove(link->manager->links_by_index, INT_TO_PTR(link->ifindex)) == link); |
cc2d7efc | 1101 | return link_unref(link); |
0d4ad91d AR |
1102 | } |
1103 | ||
dd6d53a8 | 1104 | static int link_drop_unmanaged_config(Link *link) { |
1339b950 | 1105 | int r; |
0b81225e YW |
1106 | |
1107 | assert(link); | |
dd6d53a8 | 1108 | assert(link->state == LINK_STATE_CONFIGURING); |
0b81225e | 1109 | assert(link->manager); |
5e5b137a | 1110 | |
dd6d53a8 YW |
1111 | r = link_drop_unmanaged_routes(link); |
1112 | RET_GATHER(r, link_drop_unmanaged_nexthops(link)); | |
1113 | RET_GATHER(r, link_drop_unmanaged_addresses(link)); | |
1114 | RET_GATHER(r, link_drop_unmanaged_neighbors(link)); | |
1115 | RET_GATHER(r, link_drop_unmanaged_routing_policy_rules(link)); | |
0b81225e YW |
1116 | |
1117 | return r; | |
5e5b137a TG |
1118 | } |
1119 | ||
dd6d53a8 | 1120 | static int link_drop_static_config(Link *link) { |
1339b950 | 1121 | int r; |
0b81225e YW |
1122 | |
1123 | assert(link); | |
1124 | assert(link->manager); | |
3104883d | 1125 | |
e09b7588 YW |
1126 | r = link_drop_static_routes(link); |
1127 | RET_GATHER(r, link_drop_static_nexthops(link)); | |
1128 | RET_GATHER(r, link_drop_static_addresses(link)); | |
1129 | RET_GATHER(r, link_drop_static_neighbors(link)); | |
1130 | RET_GATHER(r, link_drop_static_routing_policy_rules(link)); | |
3104883d | 1131 | |
0b81225e | 1132 | return r; |
3104883d SS |
1133 | } |
1134 | ||
451c2baf YW |
1135 | static int link_drop_dynamic_config(Link *link, Network *network) { |
1136 | int r; | |
1137 | ||
1138 | assert(link); | |
82df2e0f | 1139 | assert(link->network); |
451c2baf YW |
1140 | |
1141 | /* Drop unnecessary dynamic configurations gracefully, e.g. drop DHCP lease in the case that | |
1142 | * previously DHCP=yes and now DHCP=no, but keep DHCP lease when DHCP setting is unchanged. */ | |
1143 | ||
1144 | r = link_drop_ndisc_config(link, network); | |
42152390 YW |
1145 | RET_GATHER(r, link_drop_radv_config(link, network)); /* Stop before dropping DHCP-PD prefixes. */ |
1146 | RET_GATHER(r, link_drop_ipv4ll_config(link, network)); /* Stop before DHCPv4 client. */ | |
451c2baf YW |
1147 | RET_GATHER(r, link_drop_dhcp4_config(link, network)); |
1148 | RET_GATHER(r, link_drop_dhcp6_config(link, network)); | |
1149 | RET_GATHER(r, link_drop_dhcp_pd_config(link, network)); | |
451c2baf YW |
1150 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); |
1151 | link->lldp_rx = sd_lldp_rx_unref(link->lldp_rx); /* TODO: keep the received neighbors. */ | |
1152 | link->lldp_tx = sd_lldp_tx_unref(link->lldp_tx); | |
1153 | ||
52f46b77 YW |
1154 | /* Even if we do not release DHCP lease or so, reset 'configured' flags. Otherwise, e.g. if |
1155 | * previously UseDNS= was disabled but is now enabled, link will enter configured state before | |
1156 | * expected DNS servers being acquired. */ | |
1157 | link->ipv4ll_address_configured = false; | |
1158 | link->dhcp4_configured = false; | |
1159 | link->dhcp6_configured = false; | |
1160 | link->dhcp_pd_configured = false; | |
1161 | link->ndisc_configured = false; | |
1162 | ||
451c2baf YW |
1163 | return r; |
1164 | } | |
1165 | ||
c3b94251 | 1166 | static int link_configure(Link *link) { |
4ecdcb07 YW |
1167 | int r; |
1168 | ||
ef1ba606 | 1169 | assert(link); |
b22d8a00 | 1170 | assert(link->network); |
bd08ce56 | 1171 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 1172 | |
1187fc33 YW |
1173 | link_set_state(link, LINK_STATE_CONFIGURING); |
1174 | ||
ed3bab7a YW |
1175 | r = link_drop_unmanaged_config(link); |
1176 | if (r < 0) | |
1177 | return r; | |
1178 | ||
3cf58ef3 YW |
1179 | r = link_new_bound_to_list(link); |
1180 | if (r < 0) | |
1181 | return r; | |
1182 | ||
1dec9d81 | 1183 | r = link_request_traffic_control(link); |
4ecdcb07 YW |
1184 | if (r < 0) |
1185 | return r; | |
1186 | ||
941f8e13 YW |
1187 | r = link_configure_mtu(link); |
1188 | if (r < 0) | |
1189 | return r; | |
1190 | ||
7558f9e7 YW |
1191 | if (link->iftype == ARPHRD_CAN) { |
1192 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
1193 | r = link_request_to_set_can(link); | |
1194 | if (r < 0) | |
1195 | return r; | |
1196 | ||
1197 | return link_request_to_activate(link); | |
1198 | } | |
1199 | ||
cb8453cc | 1200 | r = link_request_sr_iov_vfs(link); |
518cd6b5 SS |
1201 | if (r < 0) |
1202 | return r; | |
1203 | ||
5e0534f1 | 1204 | r = link_set_sysctl(link); |
b69c3180 SS |
1205 | if (r < 0) |
1206 | return r; | |
8749cbcd | 1207 | |
d05c332c | 1208 | r = link_request_to_set_mac(link, /* allow_retry = */ true); |
e16e4b3b DS |
1209 | if (r < 0) |
1210 | return r; | |
1211 | ||
72e65e6f YW |
1212 | r = link_request_to_set_ipoib(link); |
1213 | if (r < 0) | |
1214 | return r; | |
1215 | ||
1187fc33 | 1216 | r = link_request_to_set_flags(link); |
e16e4b3b DS |
1217 | if (r < 0) |
1218 | return r; | |
1219 | ||
1187fc33 | 1220 | r = link_request_to_set_group(link); |
99d2baa2 SS |
1221 | if (r < 0) |
1222 | return r; | |
1223 | ||
1187fc33 YW |
1224 | r = link_request_to_set_addrgen_mode(link); |
1225 | if (r < 0) | |
1226 | return r; | |
1227 | ||
1228 | r = link_request_to_set_master(link); | |
1229 | if (r < 0) | |
1230 | return r; | |
1231 | ||
b8b0c1a0 | 1232 | r = link_request_stacked_netdevs(link, _NETDEV_LOCAL_ADDRESS_TYPE_INVALID); |
1187fc33 YW |
1233 | if (r < 0) |
1234 | return r; | |
1235 | ||
1236 | r = link_request_to_set_bond(link); | |
1237 | if (r < 0) | |
1238 | return r; | |
1239 | ||
1240 | r = link_request_to_set_bridge(link); | |
1241 | if (r < 0) | |
1242 | return r; | |
1243 | ||
1244 | r = link_request_to_set_bridge_vlan(link); | |
1245 | if (r < 0) | |
1246 | return r; | |
1247 | ||
1248 | r = link_request_to_activate(link); | |
89fe6535 SS |
1249 | if (r < 0) |
1250 | return r; | |
1251 | ||
2ffd6d73 YW |
1252 | r = ipv4ll_configure(link); |
1253 | if (r < 0) | |
1254 | return r; | |
64b21ece | 1255 | |
ccffa166 | 1256 | r = link_request_dhcp4_client(link); |
2ffd6d73 YW |
1257 | if (r < 0) |
1258 | return r; | |
eb34d4af | 1259 | |
ccffa166 | 1260 | r = link_request_dhcp6_client(link); |
2ffd6d73 YW |
1261 | if (r < 0) |
1262 | return r; | |
f5a8c43f | 1263 | |
ba4c7184 | 1264 | r = link_request_ndisc(link); |
2ffd6d73 YW |
1265 | if (r < 0) |
1266 | return r; | |
4138fb2c | 1267 | |
1d28a3cf YW |
1268 | r = link_request_dhcp_server(link); |
1269 | if (r < 0) | |
1270 | return r; | |
1271 | ||
a254fab2 | 1272 | r = link_request_radv(link); |
086b8853 YW |
1273 | if (r < 0) |
1274 | return r; | |
7465dd22 | 1275 | |
2ffd6d73 YW |
1276 | r = link_lldp_rx_configure(link); |
1277 | if (r < 0) | |
1278 | return r; | |
ce43e484 | 1279 | |
c01b9b87 YW |
1280 | r = link_lldp_tx_configure(link); |
1281 | if (r < 0) | |
1282 | return r; | |
1283 | ||
1187fc33 YW |
1284 | r = link_request_static_configs(link); |
1285 | if (r < 0) | |
1286 | return r; | |
1287 | ||
1288 | if (!link_has_carrier(link)) | |
1289 | return 0; | |
1290 | ||
1291 | return link_acquire_dynamic_conf(link); | |
505f8da7 TG |
1292 | } |
1293 | ||
170e88c8 YW |
1294 | static int link_get_network(Link *link, Network **ret) { |
1295 | Network *network; | |
1a3caa49 | 1296 | int r; |
170e88c8 YW |
1297 | |
1298 | assert(link); | |
1299 | assert(link->manager); | |
1300 | assert(ret); | |
1301 | ||
1302 | ORDERED_HASHMAP_FOREACH(network, link->manager->networks) { | |
1303 | bool warn = false; | |
1304 | ||
1a3caa49 | 1305 | r = net_match_config( |
170e88c8 | 1306 | &network->match, |
8de56fb3 | 1307 | link->dev, |
52135071 YW |
1308 | &link->hw_addr, |
1309 | &link->permanent_hw_addr, | |
170e88c8 YW |
1310 | link->driver, |
1311 | link->iftype, | |
65022cd7 | 1312 | link->kind, |
170e88c8 YW |
1313 | link->ifname, |
1314 | link->alternative_names, | |
1315 | link->wlan_iftype, | |
1316 | link->ssid, | |
1a3caa49 YW |
1317 | &link->bssid); |
1318 | if (r < 0) | |
1319 | return r; | |
1320 | if (r == 0) | |
170e88c8 YW |
1321 | continue; |
1322 | ||
8de56fb3 | 1323 | if (network->match.ifname && link->dev) { |
170e88c8 YW |
1324 | uint8_t name_assign_type = NET_NAME_UNKNOWN; |
1325 | const char *attr; | |
1326 | ||
8de56fb3 | 1327 | if (sd_device_get_sysattr_value(link->dev, "name_assign_type", &attr) >= 0) |
170e88c8 YW |
1328 | (void) safe_atou8(attr, &name_assign_type); |
1329 | ||
1330 | warn = name_assign_type == NET_NAME_ENUM; | |
1331 | } | |
1332 | ||
1333 | log_link_full(link, warn ? LOG_WARNING : LOG_DEBUG, | |
5872ea70 YW |
1334 | "Found matching .network file%s: %s", |
1335 | warn ? ", based on potentially unpredictable interface name" : "", | |
1336 | network->filename); | |
170e88c8 YW |
1337 | |
1338 | if (network->unmanaged) | |
1339 | return -ENOENT; | |
1340 | ||
1341 | *ret = network; | |
1342 | return 0; | |
1343 | } | |
1344 | ||
5872ea70 | 1345 | return log_link_debug_errno(link, SYNTHETIC_ERRNO(ENOENT), "No matching .network found."); |
170e88c8 YW |
1346 | } |
1347 | ||
5a1ef6df YW |
1348 | static void link_enter_unmanaged(Link *link) { |
1349 | assert(link); | |
1350 | ||
1351 | if (link->state == LINK_STATE_UNMANAGED) | |
1352 | return; | |
1353 | ||
1354 | log_link_full(link, link->state == LINK_STATE_INITIALIZED ? LOG_DEBUG : LOG_INFO, | |
1355 | "Unmanaging interface."); | |
1356 | ||
80a89d1a | 1357 | (void) link_stop_engines(link, /* may_keep_dynamic = */ false); |
5a1ef6df | 1358 | (void) link_drop_requests(link); |
dd6d53a8 | 1359 | (void) link_drop_static_config(link); |
5a1ef6df YW |
1360 | |
1361 | /* The bound_to map depends on .network file, hence it needs to be freed. But, do not free the | |
1362 | * bound_by map. Otherwise, if a link enters unmanaged state below, then its carrier state will | |
1363 | * not propagated to other interfaces anymore. Moreover, it is not necessary to recreate the | |
1364 | * map here, as it depends on .network files assigned to other links. */ | |
1365 | link_free_bound_to_list(link); | |
1366 | link_free_engines(link); | |
1367 | ||
1368 | link->network = network_unref(link->network); | |
1369 | link_set_state(link, LINK_STATE_UNMANAGED); | |
1370 | } | |
1371 | ||
78f8d5ed YW |
1372 | static int link_managed_by_us(Link *link) { |
1373 | int r; | |
1374 | ||
1375 | assert(link); | |
1376 | ||
1377 | if (!link->dev) | |
1378 | return true; | |
1379 | ||
1380 | const char *s; | |
1381 | r = sd_device_get_property_value(link->dev, "ID_NET_MANAGED_BY", &s); | |
1382 | if (r == -ENOENT) | |
1383 | return true; | |
1384 | if (r < 0) | |
1385 | return log_link_warning_errno(link, r, "Failed to get ID_NET_MANAGED_BY udev property: %m"); | |
1386 | ||
1387 | if (streq(s, "io.systemd.Network")) | |
1388 | return true; | |
1389 | ||
1390 | if (link->state == LINK_STATE_UNMANAGED) | |
1391 | return false; /* Already in unmanaged state */ | |
1392 | ||
1393 | log_link_debug(link, "Interface is requested to be managed by '%s', unmanaging the interface.", s); | |
1394 | link_set_state(link, LINK_STATE_UNMANAGED); | |
1395 | return false; | |
1396 | } | |
1397 | ||
2b07a321 | 1398 | int link_reconfigure_impl(Link *link, LinkReconfigurationFlag flags) { |
cb71e9c6 | 1399 | Network *network = NULL; |
ad932b15 YW |
1400 | int r; |
1401 | ||
5a1860f7 | 1402 | assert(link); |
db68e990 | 1403 | assert(link->manager); |
572b21d9 | 1404 | |
1788c346 YW |
1405 | link_assign_netdev(link); |
1406 | ||
db68e990 YW |
1407 | if (link->manager->state != MANAGER_RUNNING) |
1408 | return 0; | |
1409 | ||
4faca0a3 | 1410 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_LINGER)) |
fb961119 YW |
1411 | return 0; |
1412 | ||
78f8d5ed YW |
1413 | r = link_managed_by_us(link); |
1414 | if (r <= 0) | |
1415 | return r; | |
1416 | ||
170e88c8 | 1417 | r = link_get_network(link, &network); |
5a1ef6df YW |
1418 | if (r == -ENOENT) { |
1419 | link_enter_unmanaged(link); | |
1420 | return 0; | |
1421 | } | |
1422 | if (r < 0) | |
ad932b15 YW |
1423 | return r; |
1424 | ||
2b07a321 | 1425 | if (link->network == network && !FLAGS_SET(flags, LINK_RECONFIGURE_UNCONDITIONALLY)) |
ad932b15 YW |
1426 | return 0; |
1427 | ||
5a1ef6df YW |
1428 | _cleanup_free_ char *joined = strv_join(network->dropins, ", "); |
1429 | if (link->network) | |
1430 | log_link_info(link, "Reconfiguring with %s%s%s%s.", | |
1431 | network->filename, | |
1432 | isempty(joined) ? "" : " (dropins: ", | |
1433 | joined, | |
1434 | isempty(joined) ? "" : ")"); | |
1435 | else | |
1436 | log_link_info(link, "Configuring with %s%s%s%s.", | |
1437 | network->filename, | |
1438 | isempty(joined) ? "" : " (dropins: ", | |
1439 | joined, | |
1440 | isempty(joined) ? "" : ")"); | |
ad932b15 | 1441 | |
82df2e0f | 1442 | /* Dropping configurations based on the old .network file. */ |
451c2baf YW |
1443 | r = link_drop_requests(link); |
1444 | if (r < 0) | |
1445 | return r; | |
1446 | ||
3cf58ef3 YW |
1447 | /* The bound_to map depends on .network file, hence it needs to be freed. But, do not free the |
1448 | * bound_by map. Otherwise, if a link enters unmanaged state below, then its carrier state will | |
1449 | * not propagated to other interfaces anymore. Moreover, it is not necessary to recreate the | |
1450 | * map here, as it depends on .network files assigned to other links. */ | |
1451 | link_free_bound_to_list(link); | |
1452 | ||
82df2e0f | 1453 | _cleanup_(network_unrefp) Network *old_network = TAKE_PTR(link->network); |
ad932b15 YW |
1454 | |
1455 | /* Then, apply new .network file */ | |
9092113d | 1456 | link->network = network_ref(network); |
82df2e0f | 1457 | |
80a89d1a | 1458 | if (FLAGS_SET(network->keep_configuration, KEEP_CONFIGURATION_DYNAMIC) || |
82df2e0f YW |
1459 | !FLAGS_SET(flags, LINK_RECONFIGURE_CLEANLY)) { |
1460 | /* To make 'networkctl reconfigure INTERFACE' work safely for an interface whose new .network | |
80a89d1a | 1461 | * file has KeepConfiguration=dynamic or yes, even if a clean reconfiguration is requested, |
82df2e0f YW |
1462 | * drop only unnecessary or possibly being changed dynamic configurations here. */ |
1463 | r = link_drop_dynamic_config(link, old_network); | |
1464 | if (r < 0) | |
1465 | return r; | |
1466 | } else { | |
1467 | /* Otherwise, stop DHCP client and friends unconditionally, and drop all dynamic | |
1468 | * configurations like DHCP address and routes. */ | |
b72c29b6 | 1469 | r = link_stop_engines(link, /* may_keep_dynamic = */ false); |
82df2e0f YW |
1470 | if (r < 0) |
1471 | return r; | |
1472 | ||
1473 | /* Free DHCP client and friends. */ | |
1474 | link_free_engines(link); | |
1475 | } | |
1476 | ||
b156a95d | 1477 | link_update_operstate(link, true); |
9092113d | 1478 | link_dirty(link); |
ad932b15 | 1479 | |
ad932b15 | 1480 | link_set_state(link, LINK_STATE_INITIALIZED); |
61135582 | 1481 | link->activated = false; |
ad932b15 | 1482 | |
ad932b15 YW |
1483 | r = link_configure(link); |
1484 | if (r < 0) | |
1485 | return r; | |
1486 | ||
0e397560 | 1487 | return 1; |
ad932b15 YW |
1488 | } |
1489 | ||
2b07a321 | 1490 | typedef struct LinkReconfigurationData { |
9ad294ef | 1491 | Manager *manager; |
1e869a5d | 1492 | Link *link; |
2b07a321 | 1493 | LinkReconfigurationFlag flags; |
1e869a5d | 1494 | sd_bus_message *message; |
2b07a321 YW |
1495 | unsigned *counter; |
1496 | } LinkReconfigurationData; | |
1e869a5d | 1497 | |
2b07a321 | 1498 | static LinkReconfigurationData* link_reconfiguration_data_free(LinkReconfigurationData *data) { |
ebf66d0c YW |
1499 | if (!data) |
1500 | return NULL; | |
1501 | ||
1502 | link_unref(data->link); | |
1503 | sd_bus_message_unref(data->message); | |
1504 | ||
1505 | return mfree(data); | |
1506 | } | |
1507 | ||
2b07a321 | 1508 | DEFINE_TRIVIAL_CLEANUP_FUNC(LinkReconfigurationData*, link_reconfiguration_data_free); |
ebf66d0c | 1509 | |
2b07a321 | 1510 | static void link_reconfiguration_data_destroy_callback(LinkReconfigurationData *data) { |
1e869a5d YW |
1511 | int r; |
1512 | ||
1513 | assert(data); | |
1e869a5d | 1514 | |
2b07a321 YW |
1515 | if (data->message) { |
1516 | if (data->counter) { | |
1517 | assert(*data->counter > 0); | |
1518 | (*data->counter)--; | |
1519 | } | |
1520 | ||
1521 | if (!data->counter || *data->counter <= 0) { | |
9ad294ef YW |
1522 | /* Update the state files before replying the bus method. Otherwise, |
1523 | * systemd-networkd-wait-online following networkctl reload/reconfigure may read an | |
1524 | * outdated state file and wrongly handle an interface is already in the configured | |
1525 | * state. */ | |
1526 | (void) manager_clean_all(data->manager); | |
1527 | ||
2b07a321 YW |
1528 | r = sd_bus_reply_method_return(data->message, NULL); |
1529 | if (r < 0) | |
1530 | log_warning_errno(r, "Failed to reply for DBus method, ignoring: %m"); | |
1531 | } | |
1e869a5d YW |
1532 | } |
1533 | ||
2b07a321 | 1534 | link_reconfiguration_data_free(data); |
1e869a5d YW |
1535 | } |
1536 | ||
2b07a321 YW |
1537 | static int link_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, LinkReconfigurationData *data) { |
1538 | Link *link = ASSERT_PTR(ASSERT_PTR(data)->link); | |
1539 | int r; | |
1540 | ||
1541 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to update link state"); | |
1542 | if (r <= 0) | |
1543 | return r; | |
1544 | ||
1545 | r = link_reconfigure_impl(link, data->flags); | |
1546 | if (r < 0) { | |
1547 | link_enter_failed(link); | |
1548 | return 0; | |
1549 | } | |
1550 | ||
1551 | return r; | |
1e869a5d YW |
1552 | } |
1553 | ||
2b07a321 | 1554 | int link_reconfigure_full(Link *link, LinkReconfigurationFlag flags, sd_bus_message *message, unsigned *counter) { |
1e869a5d | 1555 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
2b07a321 | 1556 | _cleanup_(link_reconfiguration_data_freep) LinkReconfigurationData *data = NULL; |
1e869a5d YW |
1557 | int r; |
1558 | ||
1559 | assert(link); | |
1560 | assert(link->manager); | |
1561 | assert(link->manager->rtnl); | |
1e869a5d | 1562 | |
2b07a321 YW |
1563 | /* When the link is in the pending or initialized state, link_reconfigure_impl() will be called later |
1564 | * by link_initialized() or link_initialized_and_synced(). To prevent the function from being called | |
1565 | * multiple times simultaneously, let's refuse to reconfigure the interface here in such cases. */ | |
1e869a5d | 1566 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED, LINK_STATE_LINGER)) |
2b07a321 | 1567 | return 0; /* 0 means no-op. */ |
1e869a5d | 1568 | |
2b07a321 | 1569 | data = new(LinkReconfigurationData, 1); |
021d39d3 YW |
1570 | if (!data) { |
1571 | r = -ENOMEM; | |
1572 | goto failed; | |
1573 | } | |
1e869a5d | 1574 | |
2b07a321 | 1575 | *data = (LinkReconfigurationData) { |
9ad294ef | 1576 | .manager = link->manager, |
1e869a5d | 1577 | .link = link_ref(link), |
2b07a321 YW |
1578 | .flags = flags, |
1579 | .message = sd_bus_message_ref(message), /* message may be NULL, but _ref() works fine. */ | |
1580 | .counter = counter, | |
1e869a5d YW |
1581 | }; |
1582 | ||
ebf66d0c YW |
1583 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, link->ifindex); |
1584 | if (r < 0) | |
021d39d3 | 1585 | goto failed; |
ebf66d0c YW |
1586 | |
1587 | r = netlink_call_async(link->manager->rtnl, NULL, req, | |
2b07a321 YW |
1588 | link_reconfigure_handler, |
1589 | link_reconfiguration_data_destroy_callback, data); | |
ebf66d0c | 1590 | if (r < 0) |
021d39d3 | 1591 | goto failed; |
1e869a5d YW |
1592 | |
1593 | TAKE_PTR(data); | |
2b07a321 YW |
1594 | if (counter) |
1595 | (*counter)++; | |
ebf66d0c | 1596 | |
685fd0d7 YW |
1597 | if (link->state == LINK_STATE_FAILED) |
1598 | link_set_state(link, LINK_STATE_INITIALIZED); | |
1599 | ||
2b07a321 | 1600 | return 1; /* 1 means the interface will be reconfigured, and bus method will be replied later. */ |
021d39d3 YW |
1601 | |
1602 | failed: | |
1603 | log_link_warning_errno(link, r, "Failed to reconfigure interface: %m"); | |
1604 | link_enter_failed(link); | |
1605 | return r; | |
1e869a5d YW |
1606 | } |
1607 | ||
e6bf7774 | 1608 | static int link_initialized_and_synced(Link *link) { |
505f8da7 TG |
1609 | int r; |
1610 | ||
1611 | assert(link); | |
505f8da7 TG |
1612 | assert(link->manager); |
1613 | ||
40695457 YW |
1614 | if (link->state == LINK_STATE_PENDING) { |
1615 | log_link_debug(link, "Link state is up-to-date"); | |
1616 | link_set_state(link, LINK_STATE_INITIALIZED); | |
505f8da7 | 1617 | |
40695457 YW |
1618 | r = link_new_bound_by_list(link); |
1619 | if (r < 0) | |
1620 | return r; | |
0d4ad91d | 1621 | |
40695457 YW |
1622 | r = link_handle_bound_by_list(link); |
1623 | if (r < 0) | |
1624 | return r; | |
1625 | } | |
0d4ad91d | 1626 | |
2b07a321 | 1627 | return link_reconfigure_impl(link, /* flags = */ 0); |
505f8da7 TG |
1628 | } |
1629 | ||
302a796f | 1630 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4ff296b0 YW |
1631 | int r; |
1632 | ||
5a1860f7 YW |
1633 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to wait for the interface to be initialized"); |
1634 | if (r <= 0) | |
0b54c870 | 1635 | return r; |
572b21d9 | 1636 | |
4ff296b0 YW |
1637 | r = link_initialized_and_synced(link); |
1638 | if (r < 0) | |
1639 | link_enter_failed(link); | |
5a1860f7 YW |
1640 | |
1641 | return 0; | |
e6bf7774 YW |
1642 | } |
1643 | ||
3be9d62a | 1644 | static int link_initialized(Link *link, sd_device *device) { |
b0ff6dea YW |
1645 | int r; |
1646 | ||
4f561e8e | 1647 | assert(link); |
4f561e8e TG |
1648 | assert(device); |
1649 | ||
160203e9 YW |
1650 | /* Always replace with the new sd_device object. As the sysname (and possibly other properties |
1651 | * or sysattrs) may be outdated. */ | |
8de56fb3 | 1652 | device_unref_and_replace(link->dev, device); |
4f561e8e | 1653 | |
78f8d5ed YW |
1654 | r = link_managed_by_us(link); |
1655 | if (r <= 0) | |
1656 | return r; | |
1657 | ||
3b1dbdf0 YW |
1658 | if (link->dhcp_client) { |
1659 | r = sd_dhcp_client_attach_device(link->dhcp_client, link->dev); | |
1660 | if (r < 0) | |
1661 | log_link_warning_errno(link, r, "Failed to attach device to DHCPv4 client, ignoring: %m"); | |
1662 | } | |
1663 | ||
1664 | if (link->dhcp6_client) { | |
1665 | r = sd_dhcp6_client_attach_device(link->dhcp6_client, link->dev); | |
1666 | if (r < 0) | |
1667 | log_link_warning_errno(link, r, "Failed to attach device to DHCPv6 client, ignoring: %m"); | |
1668 | } | |
1669 | ||
b0ff6dea YW |
1670 | r = link_set_sr_iov_ifindices(link); |
1671 | if (r < 0) | |
1672 | log_link_warning_errno(link, r, "Failed to manage SR-IOV PF and VF ports, ignoring: %m"); | |
1673 | ||
40695457 | 1674 | if (link->state != LINK_STATE_PENDING) |
2b07a321 | 1675 | return link_reconfigure(link, /* flags = */ 0); |
679b3605 | 1676 | |
79008bdd | 1677 | log_link_debug(link, "udev initialized link"); |
4f561e8e | 1678 | |
3c9b8860 TG |
1679 | /* udev has initialized the link, but we don't know if we have yet |
1680 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
1681 | * when it returns we know that the pending NEWLINKs have already been | |
1682 | * processed and that we are up-to-date */ | |
4f561e8e | 1683 | |
5a1860f7 | 1684 | return link_call_getlink(link, link_initialized_handler); |
cc2d7efc YW |
1685 | } |
1686 | ||
9c402e3a | 1687 | int link_check_initialized(Link *link) { |
51517f9e | 1688 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
5a937ea2 | 1689 | int r; |
505f8da7 | 1690 | |
0d411b7f | 1691 | assert(link); |
505f8da7 | 1692 | |
82f52245 | 1693 | if (!udev_available()) |
0d411b7f | 1694 | return link_initialized_and_synced(link); |
852a3916 YW |
1695 | |
1696 | /* udev should be around */ | |
0ac655a6 | 1697 | r = sd_device_new_from_ifindex(&device, link->ifindex); |
852a3916 YW |
1698 | if (r < 0) { |
1699 | log_link_debug_errno(link, r, "Could not find device, waiting for device initialization: %m"); | |
1700 | return 0; | |
1701 | } | |
1702 | ||
3df2b455 | 1703 | r = device_is_processed(device); |
0d411b7f | 1704 | if (r < 0) |
3df2b455 | 1705 | return log_link_warning_errno(link, r, "Could not determine whether the device is processed by udevd: %m"); |
852a3916 YW |
1706 | if (r == 0) { |
1707 | /* not yet ready */ | |
1708 | log_link_debug(link, "link pending udev initialization..."); | |
1709 | return 0; | |
1710 | } | |
1711 | ||
1712 | r = device_is_renaming(device); | |
0d411b7f YW |
1713 | if (r < 0) |
1714 | return log_link_warning_errno(link, r, "Failed to determine the device is being renamed: %m"); | |
852a3916 YW |
1715 | if (r > 0) { |
1716 | log_link_debug(link, "Interface is being renamed, pending initialization."); | |
1717 | return 0; | |
4f561e8e | 1718 | } |
505f8da7 | 1719 | |
0d411b7f | 1720 | return link_initialized(link, device); |
a748b692 TG |
1721 | } |
1722 | ||
1fd3ac1e | 1723 | int manager_udev_process_link(Manager *m, sd_device *device, sd_device_action_t action) { |
3be9d62a | 1724 | int r, ifindex; |
1fd3ac1e | 1725 | Link *link; |
3be9d62a YW |
1726 | |
1727 | assert(m); | |
1728 | assert(device); | |
1729 | ||
3be9d62a | 1730 | r = sd_device_get_ifindex(device, &ifindex); |
1fd3ac1e YW |
1731 | if (r < 0) |
1732 | return log_device_debug_errno(device, r, "Failed to get ifindex: %m"); | |
3be9d62a | 1733 | |
75255a8d YW |
1734 | r = link_get_by_index(m, ifindex, &link); |
1735 | if (r < 0) { | |
1736 | /* This error is not critical, as the corresponding rtnl message may be received later. */ | |
1737 | log_device_debug_errno(device, r, "Failed to get link from ifindex %i, ignoring: %m", ifindex); | |
1738 | return 0; | |
1739 | } | |
1740 | ||
1741 | /* Let's unref the sd-device object assigned to the corresponding Link object, but keep the Link | |
1742 | * object here. It will be removed only when rtnetlink says so. */ | |
1743 | if (action == SD_DEVICE_REMOVE) { | |
1744 | link->dev = sd_device_unref(link->dev); | |
1745 | return 0; | |
1746 | } | |
1747 | ||
3be9d62a | 1748 | r = device_is_renaming(device); |
1fd3ac1e YW |
1749 | if (r < 0) |
1750 | return log_device_debug_errno(device, r, "Failed to determine if the device is renaming or not: %m"); | |
3be9d62a | 1751 | if (r > 0) { |
1fd3ac1e | 1752 | log_device_debug(device, "Device is renaming, waiting for the interface to be renamed."); |
71cdfe16 YW |
1753 | /* TODO: |
1754 | * What happens when a device is initialized, then soon renamed after that? When we detect | |
1755 | * such, maybe we should cancel or postpone all queued requests for the interface. */ | |
3be9d62a YW |
1756 | return 0; |
1757 | } | |
1758 | ||
4b9a8c2b YW |
1759 | r = link_initialized(link, device); |
1760 | if (r < 0) | |
1761 | link_enter_failed(link); | |
3be9d62a YW |
1762 | |
1763 | return 0; | |
1764 | } | |
1765 | ||
9c0a72f9 | 1766 | static int link_carrier_gained(Link *link) { |
2b07a321 | 1767 | LinkReconfigurationFlag flags = 0; |
9c0a72f9 TG |
1768 | int r; |
1769 | ||
1770 | assert(link); | |
1771 | ||
07021ed4 YW |
1772 | log_link_info(link, "Gained carrier"); |
1773 | ||
6706ce2f YW |
1774 | r = event_source_disable(link->carrier_lost_timer); |
1775 | if (r < 0) | |
1776 | log_link_warning_errno(link, r, "Failed to disable carrier lost timer, ignoring: %m"); | |
1777 | ||
36b8ad08 YW |
1778 | /* Process BindCarrier= setting specified by other interfaces. This is independent of the .network |
1779 | * file assigned to this interface, but depends on .network files assigned to other interfaces. | |
1780 | * Hence, this can and should be called earlier. */ | |
1781 | r = link_handle_bound_by_list(link); | |
1782 | if (r < 0) | |
1783 | return r; | |
1784 | ||
d9910948 YW |
1785 | /* If a wireless interface was connected to an access point, and the SSID is changed (that is, |
1786 | * both previous_ssid and ssid are non-NULL), then the connected wireless network could be | |
1787 | * changed. So, always reconfigure the link. Which means e.g. the DHCP client will be | |
1788 | * restarted, and the correct network information will be gained. | |
1789 | * | |
1790 | * However, do not reconfigure the wireless interface forcibly if it was not connected to any | |
1791 | * access points previously (previous_ssid is NULL in this case). As, a .network file may be | |
1792 | * already assigned to the interface (in that case, the .network file does not have the SSID= | |
1793 | * setting in the [Match] section), and the interface is already being configured. Of course, | |
1794 | * there may exist another .network file with higher priority and a matching SSID= setting. But | |
2b07a321 | 1795 | * in that case, link_reconfigure_impl() can handle that without any flags. |
d9910948 | 1796 | * |
6706ce2f | 1797 | * For non-wireless interfaces, we have no way to detect the connected network change. So, |
2b07a321 YW |
1798 | * we do not set any flags here. Note, both ssid and previous_ssid are NULL in that case. */ |
1799 | if (link->previous_ssid && !streq_ptr(link->previous_ssid, link->ssid)) | |
6e0c9b7d | 1800 | flags |= LINK_RECONFIGURE_UNCONDITIONALLY | LINK_RECONFIGURE_CLEANLY; |
6706ce2f YW |
1801 | link->previous_ssid = mfree(link->previous_ssid); |
1802 | ||
986b2514 AŠ |
1803 | /* AP and P2P-GO interfaces may have a new SSID - update the link properties in case a new .network |
1804 | * profile wants to match on it with SSID= in its [Match] section. | |
1805 | */ | |
1806 | if (IN_SET(link->wlan_iftype, NL80211_IFTYPE_AP, NL80211_IFTYPE_P2P_GO)) { | |
1807 | r = link_get_wlan_interface(link); | |
1808 | if (r < 0) | |
1809 | return r; | |
1810 | } | |
1811 | ||
081466bd YW |
1812 | /* At this stage, both wlan and link information should be up-to-date. Hence, it is not necessary to |
1813 | * call RTM_GETLINK, NL80211_CMD_GET_INTERFACE, or NL80211_CMD_GET_STATION commands, and simply call | |
1814 | * link_reconfigure_impl(). Note, link_reconfigure_impl() returns 1 when the link is reconfigured. */ | |
2b07a321 | 1815 | r = link_reconfigure_impl(link, flags); |
081466bd YW |
1816 | if (r != 0) |
1817 | return r; | |
b7ac1284 | 1818 | |
600b7898 YW |
1819 | if (link->iftype == ARPHRD_CAN) |
1820 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
aa9117c0 | 1821 | return 0; |
600b7898 | 1822 | |
b9ea3d2e | 1823 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
8566df79 | 1824 | r = link_acquire_dynamic_conf(link); |
f0269653 | 1825 | if (r < 0) |
9c0a72f9 | 1826 | return r; |
6fc25497 | 1827 | |
97108953 | 1828 | r = link_request_static_configs(link); |
6fc25497 SS |
1829 | if (r < 0) |
1830 | return r; | |
9c0a72f9 TG |
1831 | } |
1832 | ||
aa9117c0 | 1833 | return 0; |
9c0a72f9 TG |
1834 | } |
1835 | ||
6706ce2f | 1836 | static int link_carrier_lost_impl(Link *link) { |
e8eaed02 | 1837 | int ret = 0; |
6706ce2f YW |
1838 | |
1839 | assert(link); | |
1840 | ||
1841 | link->previous_ssid = mfree(link->previous_ssid); | |
1842 | ||
e8eaed02 YW |
1843 | ret = link_handle_bound_by_list(link); |
1844 | ||
6706ce2f | 1845 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
e8eaed02 | 1846 | return ret; |
6706ce2f YW |
1847 | |
1848 | if (!link->network) | |
e8eaed02 | 1849 | return ret; |
6706ce2f | 1850 | |
80a89d1a | 1851 | RET_GATHER(ret, link_stop_engines(link, /* may_keep_dynamic = */ false)); |
dd6d53a8 | 1852 | RET_GATHER(ret, link_drop_static_config(link)); |
6706ce2f YW |
1853 | |
1854 | return ret; | |
1855 | } | |
1856 | ||
1857 | static int link_carrier_lost_handler(sd_event_source *s, uint64_t usec, void *userdata) { | |
99534007 | 1858 | Link *link = ASSERT_PTR(userdata); |
6706ce2f YW |
1859 | int r; |
1860 | ||
6706ce2f YW |
1861 | r = link_carrier_lost_impl(link); |
1862 | if (r < 0) { | |
1863 | log_link_warning_errno(link, r, "Failed to process carrier lost event: %m"); | |
1864 | link_enter_failed(link); | |
1865 | } | |
1866 | ||
1867 | return 0; | |
1868 | } | |
1869 | ||
9c0a72f9 | 1870 | static int link_carrier_lost(Link *link) { |
b7326069 YW |
1871 | uint16_t dhcp_mtu; |
1872 | usec_t usec; | |
9c0a72f9 TG |
1873 | |
1874 | assert(link); | |
1875 | ||
07021ed4 YW |
1876 | log_link_info(link, "Lost carrier"); |
1877 | ||
600b7898 YW |
1878 | if (link->iftype == ARPHRD_CAN) |
1879 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
e8eaed02 | 1880 | usec = 0; |
aa9117c0 | 1881 | |
e8eaed02 YW |
1882 | else if (!link->network) |
1883 | usec = 0; | |
f1c22cf4 | 1884 | |
e8eaed02 | 1885 | else if (link->network->ignore_carrier_loss_set) |
b7326069 YW |
1886 | /* If IgnoreCarrierLoss= is explicitly specified, then use the specified value. */ |
1887 | usec = link->network->ignore_carrier_loss_usec; | |
1888 | ||
1889 | else if (link->network->bond && link->wlan_iftype > 0) | |
1890 | /* Enslaving wlan interface to a bond disconnects from the connected AP, and causes its | |
1891 | * carrier to be lost. See #19832. */ | |
1892 | usec = 3 * USEC_PER_SEC; | |
1893 | ||
1894 | else if (link->network->dhcp_use_mtu && | |
1895 | link->dhcp_lease && | |
1896 | sd_dhcp_lease_get_mtu(link->dhcp_lease, &dhcp_mtu) >= 0 && | |
1897 | dhcp_mtu != link->original_mtu) | |
1898 | /* Some drivers reset interfaces when changing MTU. Resetting interfaces by the static | |
1899 | * MTU should not cause any issues, as MTU is changed only once. However, setting MTU | |
1900 | * through DHCP lease causes an infinite loop of resetting the interface. See #18738. */ | |
1901 | usec = 5 * USEC_PER_SEC; | |
1902 | ||
1903 | else | |
27438545 | 1904 | /* Otherwise, use the implied default value. */ |
b7326069 YW |
1905 | usec = link->network->ignore_carrier_loss_usec; |
1906 | ||
1907 | if (usec == USEC_INFINITY) | |
aa9117c0 | 1908 | return 0; |
600b7898 | 1909 | |
b7326069 | 1910 | if (usec == 0) |
6706ce2f YW |
1911 | return link_carrier_lost_impl(link); |
1912 | ||
1913 | return event_reset_time_relative(link->manager->event, | |
1914 | &link->carrier_lost_timer, | |
ba4e0427 | 1915 | CLOCK_BOOTTIME, |
b7326069 | 1916 | usec, |
6706ce2f YW |
1917 | 0, |
1918 | link_carrier_lost_handler, | |
1919 | link, | |
1920 | 0, | |
1921 | "link-carrier-loss", | |
1922 | true); | |
0c9ee5d5 YW |
1923 | } |
1924 | ||
0c9ee5d5 | 1925 | static int link_admin_state_up(Link *link) { |
0c9ee5d5 YW |
1926 | assert(link); |
1927 | ||
1928 | /* This is called every time an interface admin state changes to up; | |
1929 | * specifically, when IFF_UP flag changes from unset to set. */ | |
1930 | ||
07021ed4 YW |
1931 | log_link_info(link, "Link UP"); |
1932 | ||
0c9ee5d5 YW |
1933 | if (!link->network) |
1934 | return 0; | |
1935 | ||
899b0e5e | 1936 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_DOWN) { |
1a054a20 | 1937 | log_link_info(link, "Activation policy is \"always-down\", forcing link down."); |
712fd5d2 | 1938 | return link_request_to_bring_up_or_down(link, /* up = */ false); |
0c9ee5d5 YW |
1939 | } |
1940 | ||
1941 | /* We set the ipv6 mtu after the device mtu, but the kernel resets | |
1942 | * ipv6 mtu on NETDEV_UP, so we need to reset it. */ | |
7edfbf41 | 1943 | (void) link_set_ipv6_mtu(link, LOG_INFO); |
0c9ee5d5 YW |
1944 | |
1945 | return 0; | |
1946 | } | |
1947 | ||
1948 | static int link_admin_state_down(Link *link) { | |
1949 | assert(link); | |
1950 | ||
07021ed4 YW |
1951 | log_link_info(link, "Link DOWN"); |
1952 | ||
688f1669 | 1953 | link_forget_nexthops(link); |
6954c38c YW |
1954 | link_forget_routes(link); |
1955 | ||
0c9ee5d5 YW |
1956 | if (!link->network) |
1957 | return 0; | |
1958 | ||
899b0e5e | 1959 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_UP) { |
1a054a20 | 1960 | log_link_info(link, "Activation policy is \"always-up\", forcing link up."); |
712fd5d2 | 1961 | return link_request_to_bring_up_or_down(link, /* up = */ true); |
0c9ee5d5 YW |
1962 | } |
1963 | ||
1964 | return 0; | |
1965 | } | |
1966 | ||
0c9ee5d5 YW |
1967 | static bool link_is_enslaved(Link *link) { |
1968 | if (link->flags & IFF_SLAVE) | |
0c9ee5d5 YW |
1969 | return true; |
1970 | ||
1f024462 | 1971 | if (link->master_ifindex > 0) |
0c9ee5d5 YW |
1972 | return true; |
1973 | ||
0c9ee5d5 YW |
1974 | return false; |
1975 | } | |
1976 | ||
0c9ee5d5 YW |
1977 | void link_update_operstate(Link *link, bool also_update_master) { |
1978 | LinkOperationalState operstate; | |
1979 | LinkCarrierState carrier_state; | |
1980 | LinkAddressState ipv4_address_state, ipv6_address_state, address_state; | |
1981 | LinkOnlineState online_state; | |
1982 | _cleanup_strv_free_ char **p = NULL; | |
0c9ee5d5 | 1983 | bool changed = false; |
0c9ee5d5 YW |
1984 | |
1985 | assert(link); | |
1986 | ||
1987 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
1988 | carrier_state = LINK_CARRIER_STATE_DORMANT; | |
1989 | else if (link_has_carrier(link)) { | |
1990 | if (link_is_enslaved(link)) | |
1991 | carrier_state = LINK_CARRIER_STATE_ENSLAVED; | |
1992 | else | |
1993 | carrier_state = LINK_CARRIER_STATE_CARRIER; | |
1994 | } else if (link->flags & IFF_UP) | |
1995 | carrier_state = LINK_CARRIER_STATE_NO_CARRIER; | |
1996 | else | |
1997 | carrier_state = LINK_CARRIER_STATE_OFF; | |
1998 | ||
1999 | if (carrier_state >= LINK_CARRIER_STATE_CARRIER) { | |
2000 | Link *slave; | |
2001 | ||
2002 | SET_FOREACH(slave, link->slaves) { | |
2003 | link_update_operstate(slave, false); | |
2004 | ||
2005 | if (slave->carrier_state < LINK_CARRIER_STATE_CARRIER) | |
2006 | carrier_state = LINK_CARRIER_STATE_DEGRADED_CARRIER; | |
2007 | } | |
2008 | } | |
2009 | ||
60415c13 | 2010 | link_get_address_states(link, &ipv4_address_state, &ipv6_address_state, &address_state); |
0c9ee5d5 YW |
2011 | |
2012 | /* Mapping of address and carrier state vs operational state | |
2013 | * carrier state | |
2014 | * | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
2015 | * ------------------------------------------------------------------------------ | |
2016 | * off | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
cf4dbd84 HH |
2017 | * address_state degraded | off | no-carrier | dormant | degraded | degraded | enslaved |
2018 | * routable | off | no-carrier | dormant | routable | routable | routable | |
0c9ee5d5 YW |
2019 | */ |
2020 | ||
cf4dbd84 HH |
2021 | if (carrier_state == LINK_CARRIER_STATE_DEGRADED_CARRIER && address_state == LINK_ADDRESS_STATE_ROUTABLE) |
2022 | operstate = LINK_OPERSTATE_ROUTABLE; | |
2023 | else if (carrier_state == LINK_CARRIER_STATE_DEGRADED_CARRIER && address_state == LINK_ADDRESS_STATE_DEGRADED) | |
2024 | operstate = LINK_OPERSTATE_DEGRADED; | |
2025 | else if (carrier_state < LINK_CARRIER_STATE_CARRIER || address_state == LINK_ADDRESS_STATE_OFF) | |
0c9ee5d5 YW |
2026 | operstate = (LinkOperationalState) carrier_state; |
2027 | else if (address_state == LINK_ADDRESS_STATE_ROUTABLE) | |
2028 | operstate = LINK_OPERSTATE_ROUTABLE; | |
2029 | else if (carrier_state == LINK_CARRIER_STATE_CARRIER) | |
2030 | operstate = LINK_OPERSTATE_DEGRADED; | |
2031 | else | |
2032 | operstate = LINK_OPERSTATE_ENSLAVED; | |
2033 | ||
2278d9f6 YW |
2034 | LinkOperationalStateRange req; |
2035 | link_required_operstate_for_online(link, &req); | |
2036 | ||
0c9ee5d5 YW |
2037 | /* Only determine online state for managed links with RequiredForOnline=yes */ |
2038 | if (!link->network || !link->network->required_for_online) | |
2039 | online_state = _LINK_ONLINE_STATE_INVALID; | |
2278d9f6 YW |
2040 | |
2041 | else if (!operational_state_is_in_range(operstate, &req)) | |
0c9ee5d5 | 2042 | online_state = LINK_ONLINE_STATE_OFFLINE; |
2278d9f6 | 2043 | |
0c9ee5d5 | 2044 | else { |
a853cc99 | 2045 | AddressFamily required_family = link_required_family_for_online(link); |
0c9ee5d5 YW |
2046 | bool needs_ipv4 = required_family & ADDRESS_FAMILY_IPV4; |
2047 | bool needs_ipv6 = required_family & ADDRESS_FAMILY_IPV6; | |
2048 | ||
2049 | /* The operational state is within the range required for online. | |
2050 | * If a particular address family is also required, we might revert | |
2051 | * to offline in the blocks below. */ | |
2052 | online_state = LINK_ONLINE_STATE_ONLINE; | |
2053 | ||
2278d9f6 | 2054 | if (req.min >= LINK_OPERSTATE_DEGRADED) { |
0c9ee5d5 YW |
2055 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_DEGRADED) |
2056 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
2057 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_DEGRADED) | |
2058 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
2059 | } | |
2060 | ||
2278d9f6 | 2061 | if (req.min >= LINK_OPERSTATE_ROUTABLE) { |
0c9ee5d5 YW |
2062 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_ROUTABLE) |
2063 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
2064 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_ROUTABLE) | |
2065 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | if (link->carrier_state != carrier_state) { | |
2070 | link->carrier_state = carrier_state; | |
2071 | changed = true; | |
2072 | if (strv_extend(&p, "CarrierState") < 0) | |
2073 | log_oom(); | |
2074 | } | |
2075 | ||
2076 | if (link->address_state != address_state) { | |
2077 | link->address_state = address_state; | |
2078 | changed = true; | |
2079 | if (strv_extend(&p, "AddressState") < 0) | |
2080 | log_oom(); | |
2081 | } | |
0d4ad91d | 2082 | |
0c9ee5d5 YW |
2083 | if (link->ipv4_address_state != ipv4_address_state) { |
2084 | link->ipv4_address_state = ipv4_address_state; | |
2085 | changed = true; | |
2086 | if (strv_extend(&p, "IPv4AddressState") < 0) | |
2087 | log_oom(); | |
2088 | } | |
9c0a72f9 | 2089 | |
0c9ee5d5 YW |
2090 | if (link->ipv6_address_state != ipv6_address_state) { |
2091 | link->ipv6_address_state = ipv6_address_state; | |
2092 | changed = true; | |
2093 | if (strv_extend(&p, "IPv6AddressState") < 0) | |
2094 | log_oom(); | |
2095 | } | |
9c0a72f9 | 2096 | |
0c9ee5d5 YW |
2097 | if (link->operstate != operstate) { |
2098 | link->operstate = operstate; | |
2099 | changed = true; | |
2100 | if (strv_extend(&p, "OperationalState") < 0) | |
2101 | log_oom(); | |
2102 | } | |
9c0a72f9 | 2103 | |
0c9ee5d5 YW |
2104 | if (link->online_state != online_state) { |
2105 | link->online_state = online_state; | |
2106 | changed = true; | |
2107 | if (strv_extend(&p, "OnlineState") < 0) | |
2108 | log_oom(); | |
2109 | } | |
9c0a72f9 | 2110 | |
0c9ee5d5 YW |
2111 | if (p) |
2112 | link_send_changed_strv(link, p); | |
2113 | if (changed) | |
2114 | link_dirty(link); | |
9c0a72f9 | 2115 | |
0c9ee5d5 YW |
2116 | if (also_update_master) { |
2117 | Link *master; | |
9c0a72f9 | 2118 | |
0c9ee5d5 YW |
2119 | if (link_get_master(link, &master) >= 0) |
2120 | link_update_operstate(master, true); | |
2121 | } | |
9c0a72f9 TG |
2122 | } |
2123 | ||
baa3fadf DDM |
2124 | bool link_has_carrier(Link *link) { |
2125 | assert(link); | |
2126 | return netif_has_carrier(link->kernel_operstate, link->flags); | |
2127 | } | |
2128 | ||
0c9ee5d5 YW |
2129 | #define FLAG_STRING(string, flag, old, new) \ |
2130 | (((old ^ new) & flag) \ | |
2131 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
2132 | : "") | |
2133 | ||
0d411b7f | 2134 | static int link_update_flags(Link *link, sd_netlink_message *message) { |
96f5f9ef | 2135 | bool link_was_admin_up, had_carrier; |
0c9ee5d5 YW |
2136 | uint8_t operstate; |
2137 | unsigned flags; | |
d236718c DS |
2138 | int r; |
2139 | ||
61135582 | 2140 | assert(link); |
0d411b7f | 2141 | assert(message); |
61135582 | 2142 | |
0d411b7f | 2143 | r = sd_rtnl_message_link_get_flags(message, &flags); |
0c9ee5d5 | 2144 | if (r < 0) |
0d411b7f | 2145 | return log_link_debug_errno(link, r, "rtnl: failed to read link flags: %m"); |
3be9d62a | 2146 | |
0d411b7f YW |
2147 | r = sd_netlink_message_read_u8(message, IFLA_OPERSTATE, &operstate); |
2148 | if (r == -ENODATA) | |
2149 | /* If we got a message without operstate, assume the state was unchanged. */ | |
0c9ee5d5 | 2150 | operstate = link->kernel_operstate; |
0d411b7f YW |
2151 | else if (r < 0) |
2152 | return log_link_debug_errno(link, r, "rtnl: failed to read operational state: %m"); | |
0c9ee5d5 | 2153 | |
0d411b7f | 2154 | if (link->flags == flags && link->kernel_operstate == operstate) |
61135582 DS |
2155 | return 0; |
2156 | ||
0c9ee5d5 YW |
2157 | if (link->flags != flags) { |
2158 | unsigned unknown_flags, unknown_flags_added, unknown_flags_removed; | |
61135582 | 2159 | |
0c9ee5d5 YW |
2160 | 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", |
2161 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), | |
2162 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
2163 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
2164 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
2165 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
2166 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
2167 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
2168 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
2169 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
2170 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
2171 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
2172 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
2173 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
2174 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
2175 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
2176 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
2177 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
2178 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
2179 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
d236718c | 2180 | |
0c9ee5d5 YW |
2181 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | |
2182 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
2183 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
2184 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
2185 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
2186 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
2187 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
2188 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
d236718c | 2189 | |
0c9ee5d5 YW |
2190 | if (unknown_flags_added) |
2191 | log_link_debug(link, "Unknown link flags gained, ignoring: %#.5x", unknown_flags_added); | |
61135582 | 2192 | |
0c9ee5d5 YW |
2193 | if (unknown_flags_removed) |
2194 | log_link_debug(link, "Unknown link flags lost, ignoring: %#.5x", unknown_flags_removed); | |
2195 | } | |
61135582 | 2196 | |
0d411b7f YW |
2197 | link_was_admin_up = link->flags & IFF_UP; |
2198 | had_carrier = link_has_carrier(link); | |
2199 | ||
0c9ee5d5 YW |
2200 | link->flags = flags; |
2201 | link->kernel_operstate = operstate; | |
36161cba | 2202 | |
0c9ee5d5 | 2203 | link_update_operstate(link, true); |
61135582 | 2204 | |
07021ed4 | 2205 | r = 0; |
22936833 | 2206 | |
07021ed4 | 2207 | if (!link_was_admin_up && (link->flags & IFF_UP)) |
0d411b7f | 2208 | r = link_admin_state_up(link); |
07021ed4 | 2209 | else if (link_was_admin_up && !(link->flags & IFF_UP)) |
0d411b7f | 2210 | r = link_admin_state_down(link); |
07021ed4 YW |
2211 | if (r < 0) |
2212 | return r; | |
0d4ad91d | 2213 | |
07021ed4 | 2214 | if (!had_carrier && link_has_carrier(link)) |
0d411b7f | 2215 | r = link_carrier_gained(link); |
07021ed4 YW |
2216 | else if (had_carrier && !link_has_carrier(link)) |
2217 | link_carrier_lost(link); | |
2218 | if (r < 0) | |
2219 | return r; | |
b8941f74 | 2220 | |
0d411b7f YW |
2221 | return 0; |
2222 | } | |
afe7fd56 | 2223 | |
0d411b7f YW |
2224 | static int link_update_master(Link *link, sd_netlink_message *message) { |
2225 | int master_ifindex, r; | |
7465dd22 | 2226 | |
0d411b7f YW |
2227 | assert(link); |
2228 | assert(message); | |
69629de9 | 2229 | |
0d411b7f YW |
2230 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t*) &master_ifindex); |
2231 | if (r == -ENODATA) | |
f44b20b7 YW |
2232 | master_ifindex = 0; /* no master interface */ |
2233 | else if (r < 0) | |
0d411b7f | 2234 | return log_link_debug_errno(link, r, "rtnl: failed to read master ifindex: %m"); |
807667f7 | 2235 | |
571bf1aa YW |
2236 | if (master_ifindex == link->ifindex) |
2237 | master_ifindex = 0; | |
2238 | ||
74e95e3a YW |
2239 | if (master_ifindex != link->master_ifindex) { |
2240 | if (link->master_ifindex == 0) | |
2241 | log_link_debug(link, "Attached to master interface: %i", master_ifindex); | |
2242 | else if (master_ifindex == 0) | |
2243 | log_link_debug(link, "Detached from master interface: %i", link->master_ifindex); | |
2244 | else | |
2245 | log_link_debug(link, "Master interface changed: %i %s %i", link->master_ifindex, | |
1ae9b0cf | 2246 | glyph(GLYPH_ARROW_RIGHT), master_ifindex); |
807667f7 | 2247 | |
74e95e3a YW |
2248 | link_drop_from_master(link); |
2249 | link->master_ifindex = master_ifindex; | |
7dde00ca YW |
2250 | |
2251 | /* Updating master ifindex may cause operational state change, e.g. carrier <-> enslaved */ | |
2252 | link_dirty(link); | |
74e95e3a | 2253 | } |
413708d1 | 2254 | |
0d411b7f YW |
2255 | r = link_append_to_master(link); |
2256 | if (r < 0) | |
2257 | return log_link_debug_errno(link, r, "Failed to append link to master: %m"); | |
7465dd22 | 2258 | |
0d411b7f YW |
2259 | return 0; |
2260 | } | |
807667f7 | 2261 | |
e1658632 YW |
2262 | static int link_update_driver(Link *link, sd_netlink_message *message) { |
2263 | int r; | |
2264 | ||
2265 | assert(link); | |
2266 | assert(link->manager); | |
2267 | assert(message); | |
2268 | ||
2269 | /* Driver is already read. Assuming the driver is never changed. */ | |
6625c39e | 2270 | if (link->ethtool_driver_read) |
e1658632 YW |
2271 | return 0; |
2272 | ||
2273 | /* When udevd is running, read the driver after the interface is initialized by udevd. | |
2274 | * Otherwise, ethtool may not work correctly. See issue #22538. | |
2275 | * When udevd is not running, read the value when the interface is detected. */ | |
6625c39e | 2276 | if (udev_available() && !link->dev) |
e1658632 YW |
2277 | return 0; |
2278 | ||
6625c39e YW |
2279 | link->ethtool_driver_read = true; |
2280 | ||
e1658632 YW |
2281 | r = ethtool_get_driver(&link->manager->ethtool_fd, link->ifname, &link->driver); |
2282 | if (r < 0) { | |
2283 | log_link_debug_errno(link, r, "Failed to get driver, continuing without: %m"); | |
2284 | return 0; | |
2285 | } | |
2286 | ||
2287 | log_link_debug(link, "Found driver: %s", strna(link->driver)); | |
2288 | ||
2289 | if (streq_ptr(link->driver, "dsa")) { | |
2290 | uint32_t dsa_master_ifindex = 0; | |
2291 | ||
2292 | r = sd_netlink_message_read_u32(message, IFLA_LINK, &dsa_master_ifindex); | |
2293 | if (r < 0 && r != -ENODATA) | |
2294 | return log_link_debug_errno(link, r, "rtnl: failed to read ifindex of the DSA master interface: %m"); | |
2295 | ||
2296 | if (dsa_master_ifindex > INT_MAX) { | |
2297 | log_link_debug(link, "rtnl: received too large DSA master ifindex (%"PRIu32" > INT_MAX), ignoring.", | |
2298 | dsa_master_ifindex); | |
2299 | dsa_master_ifindex = 0; | |
2300 | } | |
2301 | ||
2302 | link->dsa_master_ifindex = (int) dsa_master_ifindex; | |
2303 | } | |
2304 | ||
40695457 | 2305 | return 1; /* needs reconfigure */ |
e1658632 YW |
2306 | } |
2307 | ||
6625c39e | 2308 | static int link_update_permanent_hardware_address_from_ethtool(Link *link, sd_netlink_message *message) { |
e1658632 YW |
2309 | int r; |
2310 | ||
2311 | assert(link); | |
2312 | assert(link->manager); | |
2313 | assert(message); | |
2314 | ||
6625c39e | 2315 | if (link->ethtool_permanent_hw_addr_read) |
e1658632 YW |
2316 | return 0; |
2317 | ||
2318 | /* When udevd is running, read the permanent hardware address after the interface is | |
2319 | * initialized by udevd. Otherwise, ethtool may not work correctly. See issue #22538. | |
2320 | * When udevd is not running, read the value when the interface is detected. */ | |
6625c39e YW |
2321 | if (udev_available() && !link->dev) |
2322 | return 0; | |
2323 | ||
2324 | /* If the interface does not have a hardware address, then it will not have a permanent address either. */ | |
2325 | r = netlink_message_read_hw_addr(message, IFLA_ADDRESS, NULL); | |
2326 | if (r == -ENODATA) | |
2327 | return 0; | |
2328 | if (r < 0) | |
2329 | return log_link_debug_errno(link, r, "Failed to read IFLA_ADDRESS attribute: %m"); | |
2330 | ||
2331 | link->ethtool_permanent_hw_addr_read = true; | |
2332 | ||
2333 | r = ethtool_get_permanent_hw_addr(&link->manager->ethtool_fd, link->ifname, &link->permanent_hw_addr); | |
2334 | if (r < 0) | |
2335 | log_link_debug_errno(link, r, "Permanent hardware address not found, continuing without: %m"); | |
2336 | ||
2337 | return 0; | |
2338 | } | |
2339 | ||
2340 | static int link_update_permanent_hardware_address(Link *link, sd_netlink_message *message) { | |
2341 | int r; | |
2342 | ||
2343 | assert(link); | |
2344 | assert(link->manager); | |
2345 | assert(message); | |
2346 | ||
2347 | if (link->permanent_hw_addr.length > 0) | |
e1658632 YW |
2348 | return 0; |
2349 | ||
2350 | r = netlink_message_read_hw_addr(message, IFLA_PERM_ADDRESS, &link->permanent_hw_addr); | |
2351 | if (r < 0) { | |
2352 | if (r != -ENODATA) | |
2353 | return log_link_debug_errno(link, r, "Failed to read IFLA_PERM_ADDRESS attribute: %m"); | |
2354 | ||
0d73214c | 2355 | /* Fallback to ethtool for kernels older than v5.6 (f74877a5457d34d604dba6dbbb13c4c05bac8b93). */ |
6625c39e YW |
2356 | r = link_update_permanent_hardware_address_from_ethtool(link, message); |
2357 | if (r < 0) | |
2358 | return r; | |
e1658632 YW |
2359 | } |
2360 | ||
2361 | if (link->permanent_hw_addr.length > 0) | |
2362 | log_link_debug(link, "Saved permanent hardware address: %s", HW_ADDR_TO_STR(&link->permanent_hw_addr)); | |
2363 | ||
40695457 | 2364 | return 1; /* needs reconfigure */ |
e1658632 YW |
2365 | } |
2366 | ||
0d411b7f | 2367 | static int link_update_hardware_address(Link *link, sd_netlink_message *message) { |
e2bacccd | 2368 | struct hw_addr_data addr; |
0d411b7f | 2369 | int r; |
d93d655c | 2370 | |
0d411b7f YW |
2371 | assert(link); |
2372 | assert(message); | |
dfc58b47 | 2373 | |
0d411b7f YW |
2374 | r = netlink_message_read_hw_addr(message, IFLA_BROADCAST, &link->bcast_addr); |
2375 | if (r < 0 && r != -ENODATA) | |
2376 | return log_link_debug_errno(link, r, "rtnl: failed to read broadcast address: %m"); | |
4f882b2a | 2377 | |
e2bacccd | 2378 | r = netlink_message_read_hw_addr(message, IFLA_ADDRESS, &addr); |
0d411b7f YW |
2379 | if (r == -ENODATA) |
2380 | return 0; | |
2381 | if (r < 0) | |
fe321d45 | 2382 | return log_link_debug_errno(link, r, "rtnl: failed to read hardware address: %m"); |
bb262ef0 | 2383 | |
e2bacccd | 2384 | if (hw_addr_equal(&link->hw_addr, &addr)) |
0d411b7f | 2385 | return 0; |
a61bb41c | 2386 | |
de0f1579 | 2387 | if (link->hw_addr.length == 0) |
e2bacccd | 2388 | log_link_debug(link, "Saved hardware address: %s", HW_ADDR_TO_STR(&addr)); |
fe321d45 | 2389 | else { |
e2341b6b DT |
2390 | log_link_debug(link, "Hardware address is changed: %s %s %s", |
2391 | HW_ADDR_TO_STR(&link->hw_addr), | |
1ae9b0cf | 2392 | glyph(GLYPH_ARROW_RIGHT), |
e2341b6b | 2393 | HW_ADDR_TO_STR(&addr)); |
0d411b7f | 2394 | |
e74f1d07 | 2395 | hashmap_remove_value(link->manager->links_by_hw_addr, &link->hw_addr, link); |
fe321d45 YW |
2396 | } |
2397 | ||
e2bacccd YW |
2398 | link->hw_addr = addr; |
2399 | ||
fe321d45 YW |
2400 | if (!hw_addr_is_null(&link->hw_addr)) { |
2401 | r = hashmap_ensure_put(&link->manager->links_by_hw_addr, &hw_addr_hash_ops, &link->hw_addr, link); | |
2402 | if (r == -EEXIST && streq_ptr(link->kind, "bond")) | |
2403 | /* bonding master and its slaves have the same hardware address. */ | |
2404 | r = hashmap_replace(link->manager->links_by_hw_addr, &link->hw_addr, link); | |
2405 | if (r < 0) | |
2406 | log_link_debug_errno(link, r, "Failed to manage link by its new hardware address, ignoring: %m"); | |
2407 | } | |
0d411b7f | 2408 | |
0a14f83a | 2409 | r = ipv4acd_update_mac(link); |
76a86ffd YW |
2410 | if (r < 0) |
2411 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4 ACD client: %m"); | |
2412 | ||
0d411b7f | 2413 | r = ipv4ll_update_mac(link); |
a61bb41c | 2414 | if (r < 0) |
0d411b7f | 2415 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); |
a61bb41c | 2416 | |
0d411b7f YW |
2417 | r = dhcp4_update_mac(link); |
2418 | if (r < 0) | |
2419 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
d236718c | 2420 | |
0d411b7f YW |
2421 | r = dhcp6_update_mac(link); |
2422 | if (r < 0) | |
2423 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
2424 | ||
2425 | r = radv_update_mac(link); | |
2426 | if (r < 0) | |
2427 | return log_link_debug_errno(link, r, "Could not update MAC address for Router Advertisement: %m"); | |
2428 | ||
3be64aa4 | 2429 | if (link->ndisc && link->hw_addr.length == ETH_ALEN) { |
ca2b7cd8 | 2430 | r = sd_ndisc_set_mac(link->ndisc, &link->hw_addr.ether); |
d236718c | 2431 | if (r < 0) |
0d411b7f YW |
2432 | return log_link_debug_errno(link, r, "Could not update MAC for NDisc: %m"); |
2433 | } | |
d236718c | 2434 | |
35778343 YW |
2435 | if (link->lldp_rx) { |
2436 | r = sd_lldp_rx_set_filter_address(link->lldp_rx, &link->hw_addr.ether); | |
61135582 | 2437 | if (r < 0) |
c01b9b87 YW |
2438 | return log_link_debug_errno(link, r, "Could not update MAC address for LLDP Rx: %m"); |
2439 | } | |
2440 | ||
2441 | if (link->lldp_tx) { | |
2442 | r = sd_lldp_tx_set_hwaddr(link->lldp_tx, &link->hw_addr.ether); | |
2443 | if (r < 0) | |
2444 | return log_link_debug_errno(link, r, "Could not update MAC address for LLDP Tx: %m"); | |
61135582 DS |
2445 | } |
2446 | ||
40695457 | 2447 | return 1; /* needs reconfigure */ |
0d411b7f | 2448 | } |
a61bb41c | 2449 | |
0d411b7f | 2450 | static int link_update_mtu(Link *link, sd_netlink_message *message) { |
717ba5fc | 2451 | uint32_t mtu, min_mtu = 0, max_mtu = UINT32_MAX; |
0d411b7f | 2452 | int r; |
a61bb41c | 2453 | |
0d411b7f YW |
2454 | assert(link); |
2455 | assert(message); | |
2456 | ||
2457 | r = sd_netlink_message_read_u32(message, IFLA_MTU, &mtu); | |
2458 | if (r == -ENODATA) | |
2459 | return 0; | |
2460 | if (r < 0) | |
2461 | return log_link_debug_errno(link, r, "rtnl: failed to read MTU in RTM_NEWLINK message: %m"); | |
b5d0fd1e YW |
2462 | if (mtu == 0) |
2463 | return 0; | |
0d411b7f | 2464 | |
717ba5fc YW |
2465 | r = sd_netlink_message_read_u32(message, IFLA_MIN_MTU, &min_mtu); |
2466 | if (r < 0 && r != -ENODATA) | |
2467 | return log_link_debug_errno(link, r, "rtnl: failed to read minimum MTU in RTM_NEWLINK message: %m"); | |
2468 | ||
2469 | r = sd_netlink_message_read_u32(message, IFLA_MAX_MTU, &max_mtu); | |
2470 | if (r < 0 && r != -ENODATA) | |
2471 | return log_link_debug_errno(link, r, "rtnl: failed to read maximum MTU in RTM_NEWLINK message: %m"); | |
2472 | ||
717ba5fc YW |
2473 | if (max_mtu == 0) |
2474 | max_mtu = UINT32_MAX; | |
2475 | ||
2476 | link->min_mtu = min_mtu; | |
2477 | link->max_mtu = max_mtu; | |
2478 | ||
0d411b7f YW |
2479 | if (link->original_mtu == 0) { |
2480 | link->original_mtu = mtu; | |
717ba5fc YW |
2481 | log_link_debug(link, "Saved original MTU %" PRIu32" (min: %"PRIu32", max: %"PRIu32")", |
2482 | link->original_mtu, link->min_mtu, link->max_mtu); | |
0d411b7f YW |
2483 | } |
2484 | ||
717ba5fc YW |
2485 | if (link->mtu == mtu) |
2486 | return 0; | |
2487 | ||
b5d0fd1e | 2488 | if (link->mtu != 0) |
e2341b6b | 2489 | log_link_debug(link, "MTU is changed: %"PRIu32" %s %"PRIu32" (min: %"PRIu32", max: %"PRIu32")", |
1ae9b0cf | 2490 | link->mtu, glyph(GLYPH_ARROW_RIGHT), mtu, |
e2341b6b | 2491 | link->min_mtu, link->max_mtu); |
0d411b7f YW |
2492 | |
2493 | link->mtu = mtu; | |
2494 | ||
7edfbf41 | 2495 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) |
eb426caa | 2496 | /* The kernel resets IPv6 MTU after changing device MTU. So, we need to re-set IPv6 MTU again. */ |
39283a1f | 2497 | (void) link_set_ipv6_mtu_async(link); |
eb426caa | 2498 | |
0d411b7f YW |
2499 | if (link->dhcp_client) { |
2500 | r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu); | |
9c0a72f9 | 2501 | if (r < 0) |
0d411b7f YW |
2502 | return log_link_debug_errno(link, r, "Could not update MTU in DHCP client: %m"); |
2503 | } | |
a61bb41c | 2504 | |
0d411b7f YW |
2505 | if (link->radv) { |
2506 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
9c0a72f9 | 2507 | if (r < 0) |
0d411b7f | 2508 | return log_link_debug_errno(link, r, "Could not set MTU for Router Advertisement: %m"); |
a61bb41c TG |
2509 | } |
2510 | ||
2511 | return 0; | |
dd3efc09 | 2512 | } |
fe8db0c5 | 2513 | |
0d411b7f YW |
2514 | static int link_update_alternative_names(Link *link, sd_netlink_message *message) { |
2515 | _cleanup_strv_free_ char **altnames = NULL; | |
0d411b7f YW |
2516 | int r; |
2517 | ||
2518 | assert(link); | |
2519 | assert(message); | |
2520 | ||
2521 | r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &altnames); | |
50df02a7 | 2522 | if (r == -ENODATA) |
2368ff81 | 2523 | /* The message does not have IFLA_PROP_LIST container attribute. It does not mean the |
50df02a7 YW |
2524 | * interface has no alternative name. */ |
2525 | return 0; | |
2526 | if (r < 0) | |
0d411b7f YW |
2527 | return log_link_debug_errno(link, r, "rtnl: failed to read alternative names: %m"); |
2528 | ||
1b345c1e YW |
2529 | if (strv_equal(altnames, link->alternative_names)) |
2530 | return 0; | |
2531 | ||
0d411b7f YW |
2532 | STRV_FOREACH(n, link->alternative_names) |
2533 | hashmap_remove(link->manager->links_by_name, *n); | |
2534 | ||
2535 | strv_free_and_replace(link->alternative_names, altnames); | |
2536 | ||
2537 | STRV_FOREACH(n, link->alternative_names) { | |
2538 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, *n, link); | |
2539 | if (r < 0) | |
2540 | return log_link_debug_errno(link, r, "Failed to manage link by its new alternative names: %m"); | |
2541 | } | |
2542 | ||
40695457 | 2543 | return 1; /* needs reconfigure */ |
0d411b7f YW |
2544 | } |
2545 | ||
2546 | static int link_update_name(Link *link, sd_netlink_message *message) { | |
01afd0f7 | 2547 | char ifname_from_index[IF_NAMESIZE]; |
0d411b7f YW |
2548 | const char *ifname; |
2549 | int r; | |
2550 | ||
2551 | assert(link); | |
2552 | assert(message); | |
2553 | ||
2554 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); | |
2555 | if (r == -ENODATA) | |
7802194a | 2556 | /* Hmm?? But ok. */ |
0d411b7f YW |
2557 | return 0; |
2558 | if (r < 0) | |
2559 | return log_link_debug_errno(link, r, "Failed to read interface name in RTM_NEWLINK message: %m"); | |
2560 | ||
2561 | if (streq(ifname, link->ifname)) | |
2562 | return 0; | |
2563 | ||
01afd0f7 YW |
2564 | r = format_ifname(link->ifindex, ifname_from_index); |
2565 | if (r < 0) | |
2566 | return log_link_debug_errno(link, r, "Could not get interface name for index %i.", link->ifindex); | |
176b8be1 YW |
2567 | |
2568 | if (!streq(ifname, ifname_from_index)) { | |
2569 | log_link_debug(link, "New interface name '%s' received from the kernel does not correspond " | |
2570 | "with the name currently configured on the actual interface '%s'. Ignoring.", | |
2571 | ifname, ifname_from_index); | |
2572 | return 0; | |
2573 | } | |
2574 | ||
0d411b7f YW |
2575 | log_link_info(link, "Interface name change detected, renamed to %s.", ifname); |
2576 | ||
2577 | hashmap_remove(link->manager->links_by_name, link->ifname); | |
2578 | ||
2579 | r = free_and_strdup(&link->ifname, ifname); | |
2580 | if (r < 0) | |
2581 | return log_oom_debug(); | |
2582 | ||
2583 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, link->ifname, link); | |
2584 | if (r < 0) | |
2585 | return log_link_debug_errno(link, r, "Failed to manage link by its new name: %m"); | |
2586 | ||
54d1fdb2 YW |
2587 | if (link->dhcp_client) { |
2588 | r = sd_dhcp_client_set_ifname(link->dhcp_client, link->ifname); | |
2589 | if (r < 0) | |
2590 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP client: %m"); | |
2591 | } | |
2592 | ||
2593 | if (link->dhcp6_client) { | |
2594 | r = sd_dhcp6_client_set_ifname(link->dhcp6_client, link->ifname); | |
2595 | if (r < 0) | |
e6c4b5dc | 2596 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCPv6 client: %m"); |
54d1fdb2 YW |
2597 | } |
2598 | ||
2599 | if (link->ndisc) { | |
2600 | r = sd_ndisc_set_ifname(link->ndisc, link->ifname); | |
2601 | if (r < 0) | |
2602 | return log_link_debug_errno(link, r, "Failed to update interface name in NDisc: %m"); | |
2603 | } | |
2604 | ||
2605 | if (link->dhcp_server) { | |
2606 | r = sd_dhcp_server_set_ifname(link->dhcp_server, link->ifname); | |
2607 | if (r < 0) | |
2608 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP server: %m"); | |
2609 | } | |
2610 | ||
2611 | if (link->radv) { | |
2612 | r = sd_radv_set_ifname(link->radv, link->ifname); | |
2613 | if (r < 0) | |
2614 | return log_link_debug_errno(link, r, "Failed to update interface name in Router Advertisement: %m"); | |
2615 | } | |
2616 | ||
35778343 YW |
2617 | if (link->lldp_rx) { |
2618 | r = sd_lldp_rx_set_ifname(link->lldp_rx, link->ifname); | |
54d1fdb2 | 2619 | if (r < 0) |
c01b9b87 YW |
2620 | return log_link_debug_errno(link, r, "Failed to update interface name in LLDP Rx: %m"); |
2621 | } | |
2622 | ||
2623 | if (link->lldp_tx) { | |
2624 | r = sd_lldp_tx_set_ifname(link->lldp_tx, link->ifname); | |
2625 | if (r < 0) | |
2626 | return log_link_debug_errno(link, r, "Failed to update interface name in LLDP Tx: %m"); | |
54d1fdb2 YW |
2627 | } |
2628 | ||
2629 | if (link->ipv4ll) { | |
2630 | r = sd_ipv4ll_set_ifname(link->ipv4ll, link->ifname); | |
2631 | if (r < 0) | |
2632 | return log_link_debug_errno(link, r, "Failed to update interface name in IPv4LL client: %m"); | |
2633 | } | |
2634 | ||
86173383 YW |
2635 | r = ipv4acd_set_ifname(link); |
2636 | if (r < 0) | |
2637 | return log_link_debug_errno(link, r, "Failed to update interface name in IPv4ACD client: %m"); | |
54d1fdb2 | 2638 | |
40695457 | 2639 | return 1; /* needs reconfigure */ |
0d411b7f YW |
2640 | } |
2641 | ||
2642 | static int link_update(Link *link, sd_netlink_message *message) { | |
40695457 | 2643 | bool needs_reconfigure = false; |
0d411b7f YW |
2644 | int r; |
2645 | ||
2646 | assert(link); | |
2647 | assert(message); | |
2648 | ||
2649 | r = link_update_name(link, message); | |
2650 | if (r < 0) | |
2651 | return r; | |
40695457 | 2652 | needs_reconfigure = needs_reconfigure || r > 0; |
0d411b7f YW |
2653 | |
2654 | r = link_update_alternative_names(link, message); | |
2655 | if (r < 0) | |
2656 | return r; | |
40695457 | 2657 | needs_reconfigure = needs_reconfigure || r > 0; |
0d411b7f YW |
2658 | |
2659 | r = link_update_mtu(link, message); | |
2660 | if (r < 0) | |
2661 | return r; | |
2662 | ||
e1658632 YW |
2663 | r = link_update_driver(link, message); |
2664 | if (r < 0) | |
2665 | return r; | |
40695457 | 2666 | needs_reconfigure = needs_reconfigure || r > 0; |
e1658632 YW |
2667 | |
2668 | r = link_update_permanent_hardware_address(link, message); | |
2669 | if (r < 0) | |
2670 | return r; | |
40695457 | 2671 | needs_reconfigure = needs_reconfigure || r > 0; |
e1658632 | 2672 | |
0d411b7f YW |
2673 | r = link_update_hardware_address(link, message); |
2674 | if (r < 0) | |
2675 | return r; | |
40695457 | 2676 | needs_reconfigure = needs_reconfigure || r > 0; |
0d411b7f YW |
2677 | |
2678 | r = link_update_master(link, message); | |
2679 | if (r < 0) | |
2680 | return r; | |
2681 | ||
7d0d832d YW |
2682 | r = link_update_ipv6ll_addrgen_mode(link, message); |
2683 | if (r < 0) | |
2684 | return r; | |
2685 | ||
40695457 YW |
2686 | r = link_update_flags(link, message); |
2687 | if (r < 0) | |
2688 | return r; | |
2689 | ||
11cee6ef YW |
2690 | r = link_update_bridge_vlan(link, message); |
2691 | if (r < 0) | |
2692 | return r; | |
2693 | ||
40695457 | 2694 | return needs_reconfigure; |
0d411b7f YW |
2695 | } |
2696 | ||
0c9ee5d5 YW |
2697 | static Link *link_drop_or_unref(Link *link) { |
2698 | if (!link) | |
2699 | return NULL; | |
2700 | if (!link->manager) | |
2701 | return link_unref(link); | |
2702 | return link_drop(link); | |
2703 | } | |
2704 | ||
2705 | DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_drop_or_unref); | |
2706 | ||
2707 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { | |
5a0f6adb | 2708 | _cleanup_free_ char *ifname = NULL, *kind = NULL, *state_file = NULL, *lease_file = NULL; |
0c9ee5d5 | 2709 | _cleanup_(link_drop_or_unrefp) Link *link = NULL; |
0c9ee5d5 YW |
2710 | unsigned short iftype; |
2711 | int r, ifindex; | |
0c9ee5d5 YW |
2712 | |
2713 | assert(manager); | |
2714 | assert(message); | |
2715 | assert(ret); | |
2716 | ||
0c9ee5d5 YW |
2717 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
2718 | if (r < 0) | |
0d411b7f | 2719 | return log_debug_errno(r, "rtnl: failed to read ifindex from link message: %m"); |
0c9ee5d5 | 2720 | else if (ifindex <= 0) |
0d411b7f | 2721 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "rtnl: received link message without valid ifindex."); |
0c9ee5d5 YW |
2722 | |
2723 | r = sd_rtnl_message_link_get_type(message, &iftype); | |
2724 | if (r < 0) | |
0d411b7f | 2725 | return log_debug_errno(r, "rtnl: failed to read interface type from link message: %m"); |
0c9ee5d5 YW |
2726 | |
2727 | r = sd_netlink_message_read_string_strdup(message, IFLA_IFNAME, &ifname); | |
2728 | if (r < 0) | |
0d411b7f | 2729 | return log_debug_errno(r, "rtnl: failed to read interface name from link message: %m"); |
0c9ee5d5 YW |
2730 | |
2731 | /* check for link kind */ | |
2732 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
2733 | if (r >= 0) { | |
0d411b7f YW |
2734 | r = sd_netlink_message_read_string_strdup(message, IFLA_INFO_KIND, &kind); |
2735 | if (r < 0 && r != -ENODATA) | |
2736 | return log_debug_errno(r, "rtnl: failed to read interface kind from link message: %m"); | |
0c9ee5d5 YW |
2737 | r = sd_netlink_message_exit_container(message); |
2738 | if (r < 0) | |
0d411b7f | 2739 | return log_debug_errno(r, "rtnl: failed to exit IFLA_LINKINFO container: %m"); |
0c9ee5d5 YW |
2740 | } |
2741 | ||
4c78dc17 YW |
2742 | if (!manager->test_mode) { |
2743 | /* Do not update state files when running in test mode. */ | |
2744 | if (asprintf(&state_file, "/run/systemd/netif/links/%d", ifindex) < 0) | |
2745 | return log_oom_debug(); | |
0d411b7f | 2746 | |
4c78dc17 YW |
2747 | if (asprintf(&lease_file, "/run/systemd/netif/leases/%d", ifindex) < 0) |
2748 | return log_oom_debug(); | |
4c78dc17 | 2749 | } |
0d411b7f | 2750 | |
0c9ee5d5 YW |
2751 | link = new(Link, 1); |
2752 | if (!link) | |
2753 | return -ENOMEM; | |
2754 | ||
2755 | *link = (Link) { | |
2756 | .n_ref = 1, | |
2757 | .state = LINK_STATE_PENDING, | |
2758 | .online_state = _LINK_ONLINE_STATE_INVALID, | |
c2eb7753 | 2759 | .automatic_reconfigure_ratelimit = (const RateLimit) { .interval = 10 * USEC_PER_SEC, .burst = 5 }, |
0c9ee5d5 YW |
2760 | .ifindex = ifindex, |
2761 | .iftype = iftype, | |
2762 | .ifname = TAKE_PTR(ifname), | |
2763 | .kind = TAKE_PTR(kind), | |
2764 | ||
11cee6ef YW |
2765 | .bridge_vlan_pvid = UINT16_MAX, |
2766 | ||
7d0d832d YW |
2767 | .ipv6ll_address_gen_mode = _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_INVALID, |
2768 | ||
0d411b7f YW |
2769 | .state_file = TAKE_PTR(state_file), |
2770 | .lease_file = TAKE_PTR(lease_file), | |
0d411b7f | 2771 | |
0c9ee5d5 YW |
2772 | .n_dns = UINT_MAX, |
2773 | .dns_default_route = -1, | |
2774 | .llmnr = _RESOLVE_SUPPORT_INVALID, | |
2775 | .mdns = _RESOLVE_SUPPORT_INVALID, | |
2776 | .dnssec_mode = _DNSSEC_MODE_INVALID, | |
2777 | .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID, | |
2778 | }; | |
2779 | ||
4cf443e6 | 2780 | r = hashmap_ensure_put(&manager->links_by_index, &link_hash_ops, INT_TO_PTR(link->ifindex), link); |
0c9ee5d5 | 2781 | if (r < 0) |
0d411b7f | 2782 | return log_link_debug_errno(link, r, "Failed to store link into manager: %m"); |
0c9ee5d5 YW |
2783 | |
2784 | link->manager = manager; | |
2785 | ||
0d411b7f | 2786 | r = hashmap_ensure_put(&manager->links_by_name, &string_hash_ops, link->ifname, link); |
0c9ee5d5 | 2787 | if (r < 0) |
0d411b7f | 2788 | return log_link_debug_errno(link, r, "Failed to manage link by its interface name: %m"); |
0c9ee5d5 | 2789 | |
8a77e245 YW |
2790 | log_link_debug(link, "Saved new link: ifindex=%i, iftype=%s(%u), kind=%s", |
2791 | link->ifindex, strna(arphrd_to_name(link->iftype)), link->iftype, strna(link->kind)); | |
2792 | ||
9c5b8d46 AŠ |
2793 | /* If contained in this set, the link is wireless and the corresponding NL80211_CMD_NEW_INTERFACE |
2794 | * message arrived too early. Request the wireless link information again. | |
2795 | */ | |
2796 | if (set_remove(manager->new_wlan_ifindices, INT_TO_PTR(link->ifindex))) { | |
2797 | r = link_get_wlan_interface(link); | |
2798 | if (r < 0) | |
2799 | log_link_warning_errno(link, r, "Failed to get wireless interface, ignoring: %m"); | |
2800 | } | |
2801 | ||
0c9ee5d5 | 2802 | *ret = TAKE_PTR(link); |
0c9ee5d5 YW |
2803 | return 0; |
2804 | } | |
2805 | ||
0d411b7f | 2806 | int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *manager) { |
3be9d62a YW |
2807 | Link *link = NULL; |
2808 | NetDev *netdev = NULL; | |
2809 | uint16_t type; | |
2810 | const char *name; | |
2811 | int r, ifindex; | |
2812 | ||
2813 | assert(rtnl); | |
2814 | assert(message); | |
0d411b7f | 2815 | assert(manager); |
3be9d62a YW |
2816 | |
2817 | if (sd_netlink_message_is_error(message)) { | |
2818 | r = sd_netlink_message_get_errno(message); | |
2819 | if (r < 0) | |
2820 | log_message_warning_errno(message, r, "rtnl: Could not receive link message, ignoring"); | |
2821 | ||
2822 | return 0; | |
2823 | } | |
2824 | ||
2825 | r = sd_netlink_message_get_type(message, &type); | |
2826 | if (r < 0) { | |
2827 | log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m"); | |
2828 | return 0; | |
2829 | } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) { | |
2830 | log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type); | |
2831 | return 0; | |
2832 | } | |
2833 | ||
2834 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
2835 | if (r < 0) { | |
2836 | log_warning_errno(r, "rtnl: Could not get ifindex from link message, ignoring: %m"); | |
2837 | return 0; | |
2838 | } else if (ifindex <= 0) { | |
2839 | log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex); | |
2840 | return 0; | |
2841 | } | |
2842 | ||
2843 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name); | |
2844 | if (r < 0) { | |
2845 | log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m"); | |
2846 | return 0; | |
2847 | } | |
2848 | ||
6eab614d | 2849 | (void) link_get_by_index(manager, ifindex, &link); |
0d411b7f | 2850 | (void) netdev_get(manager, name, &netdev); |
3be9d62a YW |
2851 | |
2852 | switch (type) { | |
2853 | case RTM_NEWLINK: | |
0d411b7f YW |
2854 | if (netdev) { |
2855 | /* netdev exists, so make sure the ifindex matches */ | |
2856 | r = netdev_set_ifindex(netdev, message); | |
2857 | if (r < 0) { | |
66141164 | 2858 | log_netdev_warning_errno(netdev, r, "Could not process new link message for netdev, ignoring: %m"); |
bc0d3f38 | 2859 | netdev_enter_failed(netdev); |
0d411b7f YW |
2860 | return 0; |
2861 | } | |
2862 | } | |
2863 | ||
3be9d62a YW |
2864 | if (!link) { |
2865 | /* link is new, so add it */ | |
0d411b7f | 2866 | r = link_new(manager, message, &link); |
3be9d62a | 2867 | if (r < 0) { |
0d411b7f | 2868 | log_warning_errno(r, "Could not process new link message: %m"); |
3be9d62a YW |
2869 | return 0; |
2870 | } | |
3be9d62a | 2871 | |
0d411b7f | 2872 | r = link_update(link, message); |
3be9d62a | 2873 | if (r < 0) { |
66141164 | 2874 | log_link_warning_errno(link, r, "Could not process link message: %m"); |
0d411b7f | 2875 | link_enter_failed(link); |
3be9d62a YW |
2876 | return 0; |
2877 | } | |
3be9d62a | 2878 | |
30d5d11b YW |
2879 | if (link->manager->test_mode) { |
2880 | log_link_debug(link, "Running in test mode, refusing to enter initialized state."); | |
2881 | link_set_state(link, LINK_STATE_UNMANAGED); | |
2882 | return 0; | |
2883 | } | |
2884 | ||
9c402e3a YW |
2885 | /* Do not enter initialized state if we are enumerating. */ |
2886 | if (manager->enumerating) | |
2887 | return 0; | |
2888 | ||
0d411b7f YW |
2889 | r = link_check_initialized(link); |
2890 | if (r < 0) { | |
66141164 | 2891 | log_link_warning_errno(link, r, "Failed to check link is initialized: %m"); |
0d411b7f YW |
2892 | link_enter_failed(link); |
2893 | return 0; | |
2894 | } | |
2895 | } else { | |
2896 | r = link_update(link, message); | |
2897 | if (r < 0) { | |
66141164 | 2898 | log_link_warning_errno(link, r, "Could not process link message: %m"); |
0d411b7f YW |
2899 | link_enter_failed(link); |
2900 | return 0; | |
2901 | } | |
30d5d11b YW |
2902 | if (r == 0) |
2903 | return 0; | |
2904 | ||
2905 | if (link->manager->test_mode) { | |
2906 | log_link_debug(link, "Running in test mode, refusing to configure interface."); | |
2907 | link_set_state(link, LINK_STATE_UNMANAGED); | |
2908 | return 0; | |
2909 | } | |
2910 | ||
9c402e3a YW |
2911 | /* Do not configure interface if we are enumerating. */ |
2912 | if (manager->enumerating) | |
2913 | return 0; | |
2914 | ||
2b07a321 | 2915 | r = link_reconfigure_impl(link, /* flags = */ 0); |
30d5d11b YW |
2916 | if (r < 0) { |
2917 | log_link_warning_errno(link, r, "Failed to reconfigure interface: %m"); | |
2918 | link_enter_failed(link); | |
2919 | return 0; | |
40695457 | 2920 | } |
3be9d62a | 2921 | } |
3be9d62a YW |
2922 | break; |
2923 | ||
2924 | case RTM_DELLINK: | |
2925 | link_drop(link); | |
2926 | netdev_drop(netdev); | |
3be9d62a YW |
2927 | break; |
2928 | ||
2929 | default: | |
04499a70 | 2930 | assert_not_reached(); |
3be9d62a YW |
2931 | } |
2932 | ||
2933 | return 1; | |
2934 | } | |
2935 | ||
79c6e114 YW |
2936 | int link_getlink_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg) { |
2937 | uint16_t message_type; | |
2938 | int r; | |
2939 | ||
2940 | assert(m); | |
2941 | assert(link); | |
2942 | assert(error_msg); | |
2943 | ||
2944 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
2945 | return 0; | |
2946 | ||
2947 | r = sd_netlink_message_get_errno(m); | |
2948 | if (r < 0) { | |
d28746ef | 2949 | log_link_message_warning_errno(link, m, r, "%s", error_msg); |
79c6e114 YW |
2950 | link_enter_failed(link); |
2951 | return 0; | |
2952 | } | |
2953 | ||
2954 | r = sd_netlink_message_get_type(m, &message_type); | |
2955 | if (r < 0) { | |
2956 | log_link_debug_errno(link, r, "rtnl: failed to read link message type, ignoring: %m"); | |
2957 | return 0; | |
2958 | } | |
2959 | if (message_type != RTM_NEWLINK) { | |
2960 | log_link_debug(link, "rtnl: received invalid link message type, ignoring."); | |
2961 | return 0; | |
2962 | } | |
2963 | ||
2964 | r = link_update(link, m); | |
2965 | if (r < 0) { | |
2966 | link_enter_failed(link); | |
2967 | return 0; | |
2968 | } | |
2969 | ||
2970 | return 1; | |
2971 | } | |
2972 | ||
2973 | int link_call_getlink(Link *link, link_netlink_message_handler_t callback) { | |
2974 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
2975 | int r; | |
2976 | ||
2977 | assert(link); | |
2978 | assert(link->manager); | |
2979 | assert(link->manager->rtnl); | |
2980 | assert(callback); | |
2981 | ||
2982 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, link->ifindex); | |
2983 | if (r < 0) | |
2984 | return r; | |
2985 | ||
2986 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, | |
2987 | link_netlink_destroy_callback, link); | |
2988 | if (r < 0) | |
2989 | return r; | |
2990 | ||
2991 | link_ref(link); | |
2992 | return 0; | |
2993 | } | |
2994 | ||
fe8db0c5 | 2995 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
0580badc | 2996 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 2997 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 2998 | [LINK_STATE_CONFIGURING] = "configuring", |
0580badc ZJS |
2999 | [LINK_STATE_CONFIGURED] = "configured", |
3000 | [LINK_STATE_UNMANAGED] = "unmanaged", | |
3001 | [LINK_STATE_FAILED] = "failed", | |
3002 | [LINK_STATE_LINGER] = "linger", | |
fe8db0c5 TG |
3003 | }; |
3004 | ||
3005 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
7ae55b78 YW |
3006 | |
3007 | int link_flags_to_string_alloc(uint32_t flags, char **ret) { | |
3008 | _cleanup_free_ char *str = NULL; | |
19aa7eeb ZJS |
3009 | static const char* map[] = { |
3010 | [LOG2U(IFF_UP)] = "up", /* interface is up. */ | |
0b75493d | 3011 | [LOG2U(IFF_BROADCAST)] = "broadcast", /* broadcast address valid. */ |
19aa7eeb ZJS |
3012 | [LOG2U(IFF_DEBUG)] = "debug", /* turn on debugging. */ |
3013 | [LOG2U(IFF_LOOPBACK)] = "loopback", /* interface is a loopback net. */ | |
3014 | [LOG2U(IFF_POINTOPOINT)] = "point-to-point", /* interface has p-p link. */ | |
3015 | [LOG2U(IFF_NOTRAILERS)] = "no-trailers", /* avoid use of trailers. */ | |
3016 | [LOG2U(IFF_RUNNING)] = "running", /* interface RFC2863 OPER_UP. */ | |
3017 | [LOG2U(IFF_NOARP)] = "no-arp", /* no ARP protocol. */ | |
3018 | [LOG2U(IFF_PROMISC)] = "promiscuous", /* receive all packets. */ | |
3019 | [LOG2U(IFF_ALLMULTI)] = "all-multicast", /* receive all multicast packets. */ | |
3020 | [LOG2U(IFF_MASTER)] = "master", /* master of a load balancer. */ | |
3021 | [LOG2U(IFF_SLAVE)] = "slave", /* slave of a load balancer. */ | |
0b75493d | 3022 | [LOG2U(IFF_MULTICAST)] = "multicast", /* supports multicast. */ |
19aa7eeb ZJS |
3023 | [LOG2U(IFF_PORTSEL)] = "portsel", /* can set media type. */ |
3024 | [LOG2U(IFF_AUTOMEDIA)] = "auto-media", /* auto media select active. */ | |
3025 | [LOG2U(IFF_DYNAMIC)] = "dynamic", /* dialup device with changing addresses. */ | |
3026 | [LOG2U(IFF_LOWER_UP)] = "lower-up", /* driver signals L1 up. */ | |
3027 | [LOG2U(IFF_DORMANT)] = "dormant", /* driver signals dormant. */ | |
3028 | [LOG2U(IFF_ECHO)] = "echo", /* echo sent packets. */ | |
7ae55b78 YW |
3029 | }; |
3030 | ||
3031 | assert(ret); | |
3032 | ||
3033 | for (size_t i = 0; i < ELEMENTSOF(map); i++) | |
1e4e5572 | 3034 | if (BIT_SET(flags, i) && map[i]) |
19aa7eeb ZJS |
3035 | if (!strextend_with_separator(&str, ",", map[i])) |
3036 | return -ENOMEM; | |
7ae55b78 YW |
3037 | |
3038 | *ret = TAKE_PTR(str); | |
3039 | return 0; | |
3040 | } | |
3041 | ||
3042 | static const char * const kernel_operstate_table[] = { | |
3043 | [IF_OPER_UNKNOWN] = "unknown", | |
3044 | [IF_OPER_NOTPRESENT] = "not-present", | |
3045 | [IF_OPER_DOWN] = "down", | |
3046 | [IF_OPER_LOWERLAYERDOWN] = "lower-layer-down", | |
3047 | [IF_OPER_TESTING] = "testing", | |
3048 | [IF_OPER_DORMANT] = "dormant", | |
3049 | [IF_OPER_UP] = "up", | |
3050 | }; | |
3051 | ||
3052 | DEFINE_STRING_TABLE_LOOKUP_TO_STRING(kernel_operstate, int); |