projects / thirdparty / systemd.git / blame
| Commit | Line | Data |
|---|---|---|
| db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| f579559b | 2 | |
| 176b8be1 | 3 | #include <net/if.h> |
| 9aa5d8ba | 4 | #include <netinet/in.h> |
| f579559b | 5 | #include <linux/if.h> |
| 8f815e8b | 6 | #include <linux/if_arp.h> |
| 518cd6b5 | 7 | #include <linux/if_link.h> |
| 2a0d07d6 | 8 | #include <linux/netdevice.h> |
| 8430841b | 9 | #include <sys/socket.h> |
| 4cc7a82c | 10 | #include <unistd.h> |
| f579559b | 11 | |
| b5efdb8a | 12 | #include "alloc-util.h" |
| 8a77e245 | 13 | #include "arphrd-util.h" |
| c0267a59 | 14 | #include "batadv.h" |
| 737f1405 YW |
15 | #include "bond.h" |
| 16 | #include "bridge.h" | |
| 1346b1f0 | 17 | #include "bus-util.h" |
| 3be9d62a YW |
18 | #include "device-private.h" |
| 19 | #include "device-util.h" | |
| 27dfc982 | 20 | #include "dhcp-identifier.h" |
| bd91b83e | 21 | #include "dhcp-lease-internal.h" |
| 686d13b9 | 22 | #include "env-file.h" |
| 4bb7cc82 | 23 | #include "ethtool-util.h" |
| 6706ce2f | 24 | #include "event-util.h" |
| 3ffd4af2 | 25 | #include "fd-util.h" |
| cf1d700d | 26 | #include "fileio.h" |
| 176b8be1 | 27 | #include "format-util.h" |
| af664001 | 28 | #include "fs-util.h" |
| 737f1405 | 29 | #include "ipvlan.h" |
| ef118d00 | 30 | #include "missing_network.h" |
| cf1d700d | 31 | #include "netlink-util.h" |
| c6f7c917 | 32 | #include "network-internal.h" |
| fb486c90 | 33 | #include "networkd-address-label.h" |
| 093e3533 | 34 | #include "networkd-address.h" |
| 9671ae9d | 35 | #include "networkd-bridge-fdb.h" |
| ff9e0783 | 36 | #include "networkd-bridge-mdb.h" |
| 3ddcbeea | 37 | #include "networkd-can.h" |
| d5ebcf65 | 38 | #include "networkd-dhcp-prefix-delegation.h" |
| 8fcf1d61 | 39 | #include "networkd-dhcp-server.h" |
| ca5ad760 YW |
40 | #include "networkd-dhcp4.h" |
| 41 | #include "networkd-dhcp6.h" | |
| 76a86ffd | 42 | #include "networkd-ipv4acd.h" |
| ca5ad760 | 43 | #include "networkd-ipv4ll.h" |
| 76c5a0f2 | 44 | #include "networkd-ipv6-proxy-ndp.h" |
| 6a1af3d4 YW |
45 | #include "networkd-link-bus.h" |
| 46 | #include "networkd-link.h" | |
| 8e1ad1ea | 47 | #include "networkd-lldp-tx.h" |
| 23f53b99 | 48 | #include "networkd-manager.h" |
| 1e7a0e21 | 49 | #include "networkd-ndisc.h" |
| e4a71bf3 | 50 | #include "networkd-neighbor.h" |
| 75156ccb | 51 | #include "networkd-nexthop.h" |
| 19d9a5ad | 52 | #include "networkd-queue.h" |
| 7465dd22 | 53 | #include "networkd-radv.h" |
| 3b6a3bde | 54 | #include "networkd-route.h" |
| bce67bbe | 55 | #include "networkd-routing-policy-rule.h" |
| 0fa8ee6c | 56 | #include "networkd-setlink.h" |
| 19d9a5ad | 57 | #include "networkd-sriov.h" |
| 3b5a4fc6 | 58 | #include "networkd-state-file.h" |
| 19d9a5ad | 59 | #include "networkd-sysctl.h" |
| cf1d700d TG |
60 | #include "set.h" |
| 61 | #include "socket-util.h" | |
| 15a5e950 | 62 | #include "stdio-util.h" |
| 8b43440b | 63 | #include "string-table.h" |
| 51517f9e | 64 | #include "strv.h" |
| 34658df2 | 65 | #include "tc.h" |
| e4de7287 | 66 | #include "tmpfile-util.h" |
| 299ad32d | 67 | #include "udev-util.h" |
| cf1d700d | 68 | #include "util.h" |
| 737f1405 | 69 | #include "vrf.h" |
| fc2f9534 | 70 | |
| 3ca1fab7 | 71 | bool link_ipv4ll_enabled(Link *link) { |
| b9d74c40 LP |
72 | assert(link); |
| 73 | ||
| 78c958f8 TG |
74 | if (link->flags & IFF_LOOPBACK) |
| 75 | return false; | |
| 76 | ||
| 77 | if (!link->network) | |
| 78 | return false; | |
| 79 | ||
| 500b96eb | 80 | if (link->iftype == ARPHRD_CAN) |
| c6ac3729 YW |
81 | return false; |
| 82 | ||
| a1e35fca YW |
83 | if (link->hw_addr.length != ETH_ALEN) |
| 84 | return false; | |
| 85 | ||
| 86 | if (ether_addr_is_null(&link->hw_addr.ether)) | |
| 87 | return false; | |
| 88 | ||
| 71df0776 YW |
89 | /* ARPHRD_INFINIBAND seems to potentially support IPv4LL. |
| 90 | * But currently sd-ipv4ll and sd-ipv4acd only support ARPHRD_ETHER. */ | |
| 91 | if (link->iftype != ARPHRD_ETHER) | |
| 92 | return false; | |
| 93 | ||
| 94 | if (streq_ptr(link->kind, "vrf")) | |
| a8f5bba6 JD |
95 | return false; |
| 96 | ||
| f410d463 YW |
97 | /* L3 or L3S mode do not support ARP. */ |
| 98 | if (IN_SET(link_get_ipvlan_mode(link), NETDEV_IPVLAN_MODE_L3, NETDEV_IPVLAN_MODE_L3S)) | |
| 99 | return false; | |
| 100 | ||
| f2bfcdb9 YW |
101 | if (link->network->bond) |
| 102 | return false; | |
| 103 | ||
| 3ca1fab7 | 104 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
| 8bc17bb3 SS |
105 | } |
| 106 | ||
| 5e0534f1 | 107 | bool link_ipv6_enabled(Link *link) { |
| 439689c6 SS |
108 | assert(link); |
| 109 | ||
| 110 | if (!socket_ipv6_is_supported()) | |
| 111 | return false; | |
| 112 | ||
| b102cdca | 113 | if (link->network->bond) |
| 2b00a4e0 TY |
114 | return false; |
| 115 | ||
| 500b96eb | 116 | if (link->iftype == ARPHRD_CAN) |
| af9ba57a YW |
117 | return false; |
| 118 | ||
| 4cef7fe3 | 119 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
| adfeee49 YW |
120 | if (link_ipv6ll_enabled(link)) |
| 121 | return true; | |
| 122 | ||
| 123 | if (network_has_static_ipv6_configurations(link->network)) | |
| 124 | return true; | |
| 125 | ||
| 126 | return false; | |
| 439689c6 SS |
127 | } |
| 128 | ||
| 7191a57a YW |
129 | bool link_is_ready_to_configure(Link *link, bool allow_unmanaged) { |
| 130 | assert(link); | |
| 131 | ||
| 8e4b1b35 | 132 | if (!link->network) { |
| 7191a57a YW |
133 | if (!allow_unmanaged) |
| 134 | return false; | |
| 135 | ||
| 136 | return link_has_carrier(link); | |
| 137 | } | |
| 138 | ||
| 139 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) | |
| 140 | return false; | |
| 141 | ||
| baa95d22 YW |
142 | if (!link->network->configure_without_carrier) { |
| 143 | if (link->set_flags_messages > 0) | |
| 144 | return false; | |
| 145 | ||
| 146 | if (!link_has_carrier(link)) | |
| 147 | return false; | |
| 148 | } | |
| 7191a57a | 149 | |
| 0fa8ee6c YW |
150 | if (link->set_link_messages > 0) |
| 151 | return false; | |
| 152 | ||
| 112a0972 YW |
153 | if (!link->activated) |
| 154 | return false; | |
| 112a0972 | 155 | |
| 7191a57a YW |
156 | return true; |
| 157 | } | |
| 158 | ||
| 15761549 YW |
159 | void link_ntp_settings_clear(Link *link) { |
| 160 | link->ntp = strv_free(link->ntp); | |
| 161 | } | |
| 162 | ||
| 163 | void link_dns_settings_clear(Link *link) { | |
| f5fbe71d | 164 | if (link->n_dns != UINT_MAX) |
| e77bd3fd YW |
165 | for (unsigned i = 0; i < link->n_dns; i++) |
| 166 | in_addr_full_free(link->dns[i]); | |
| 15761549 | 167 | link->dns = mfree(link->dns); |
| f5fbe71d | 168 | link->n_dns = UINT_MAX; |
| 15761549 | 169 | |
| 6e4571f0 YW |
170 | link->search_domains = ordered_set_free(link->search_domains); |
| 171 | link->route_domains = ordered_set_free(link->route_domains); | |
| 15761549 YW |
172 | |
| 173 | link->dns_default_route = -1; | |
| 174 | link->llmnr = _RESOLVE_SUPPORT_INVALID; | |
| 175 | link->mdns = _RESOLVE_SUPPORT_INVALID; | |
| 176 | link->dnssec_mode = _DNSSEC_MODE_INVALID; | |
| 177 | link->dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID; | |
| 178 | ||
| 179 | link->dnssec_negative_trust_anchors = set_free_free(link->dnssec_negative_trust_anchors); | |
| 180 | } | |
| 181 | ||
| 1a6bb31f YW |
182 | static void link_free_engines(Link *link) { |
| 183 | if (!link) | |
| 184 | return; | |
| 185 | ||
| 186 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); | |
| 187 | link->dhcp_client = sd_dhcp_client_unref(link->dhcp_client); | |
| 188 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); | |
| e49bad01 | 189 | link->dhcp4_6rd_tunnel_name = mfree(link->dhcp4_6rd_tunnel_name); |
| 1a6bb31f | 190 | |
| 35778343 | 191 | link->lldp_rx = sd_lldp_rx_unref(link->lldp_rx); |
| c01b9b87 | 192 | link->lldp_tx = sd_lldp_tx_unref(link->lldp_tx); |
| 1a6bb31f YW |
193 | |
| 194 | ndisc_flush(link); | |
| 195 | ||
| 196 | link->ipv4ll = sd_ipv4ll_unref(link->ipv4ll); | |
| 197 | link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); | |
| 1633c457 | 198 | link->dhcp6_lease = sd_dhcp6_lease_unref(link->dhcp6_lease); |
| 1a6bb31f YW |
199 | link->ndisc = sd_ndisc_unref(link->ndisc); |
| 200 | link->radv = sd_radv_unref(link->radv); | |
| 201 | } | |
| 202 | ||
| 8301aa0b | 203 | static Link *link_free(Link *link) { |
| 8301aa0b | 204 | assert(link); |
| f579559b | 205 | |
| 15761549 YW |
206 | link_ntp_settings_clear(link); |
| 207 | link_dns_settings_clear(link); | |
| 208 | ||
| 8eec0b9d | 209 | link->routes = set_free(link->routes); |
| 8eec0b9d | 210 | link->nexthops = set_free(link->nexthops); |
| 8eec0b9d | 211 | link->neighbors = set_free(link->neighbors); |
| 8eec0b9d | 212 | link->addresses = set_free(link->addresses); |
| 3a67b8bb YW |
213 | link->qdiscs = set_free(link->qdiscs); |
| 214 | link->tclasses = set_free(link->tclasses); | |
| adda1ed9 | 215 | |
| a27588d4 | 216 | link->dhcp_pd_prefixes = set_free(link->dhcp_pd_prefixes); |
| 4b409e85 | 217 | |
| 1a6bb31f | 218 | link_free_engines(link); |
| 49699bac | 219 | |
| c166a070 | 220 | free(link->ifname); |
| 572b21d9 | 221 | strv_free(link->alternative_names); |
| ceac4078 | 222 | free(link->kind); |
| 8d968fdd | 223 | free(link->ssid); |
| 6706ce2f | 224 | free(link->previous_ssid); |
| c643bda5 | 225 | free(link->driver); |
| 6cad256d | 226 | |
| a34e58d4 YW |
227 | unlink_and_free(link->lease_file); |
| 228 | unlink_and_free(link->lldp_file); | |
| 229 | unlink_and_free(link->state_file); | |
| c166a070 | 230 | |
| 51517f9e | 231 | sd_device_unref(link->sd_device); |
| 9aa2585e | 232 | netdev_unref(link->netdev); |
| b5db00e5 | 233 | |
| 0d4ad91d | 234 | hashmap_free(link->bound_to_links); |
| 0d4ad91d AR |
235 | hashmap_free(link->bound_by_links); |
| 236 | ||
| 5f707e12 | 237 | set_free_with_destructor(link->slaves, link_unref); |
| 033295c1 | 238 | |
| c9c908a6 YW |
239 | network_unref(link->network); |
| 240 | ||
| 6706ce2f YW |
241 | sd_event_source_disable_unref(link->carrier_lost_timer); |
| 242 | ||
| 8301aa0b | 243 | return mfree(link); |
| 14b746f7 TG |
244 | } |
| 245 | ||
| 8301aa0b | 246 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
| 14b746f7 | 247 | |
| 6eab614d | 248 | int link_get_by_index(Manager *m, int ifindex, Link **ret) { |
| 11a7f229 | 249 | Link *link; |
| 11a7f229 TG |
250 | |
| 251 | assert(m); | |
| e856ed00 | 252 | assert(ifindex > 0); |
| 11a7f229 | 253 | |
| 6eab614d | 254 | link = hashmap_get(m->links_by_index, INT_TO_PTR(ifindex)); |
| 11a7f229 TG |
255 | if (!link) |
| 256 | return -ENODEV; | |
| 257 | ||
| 0b54c870 YW |
258 | if (ret) |
| 259 | *ret = link; | |
| 260 | return 0; | |
| 261 | } | |
| 262 | ||
| 263 | int link_get_by_name(Manager *m, const char *ifname, Link **ret) { | |
| 264 | Link *link; | |
| 265 | ||
| 266 | assert(m); | |
| 267 | assert(ifname); | |
| 11a7f229 | 268 | |
| 0b54c870 YW |
269 | link = hashmap_get(m->links_by_name, ifname); |
| 270 | if (!link) | |
| 271 | return -ENODEV; | |
| 272 | ||
| 273 | if (ret) | |
| 274 | *ret = link; | |
| 11a7f229 TG |
275 | return 0; |
| 276 | } | |
| 277 | ||
| fe321d45 YW |
278 | int link_get_by_hw_addr(Manager *m, const struct hw_addr_data *hw_addr, Link **ret) { |
| 279 | Link *link; | |
| 280 | ||
| 281 | assert(m); | |
| 282 | assert(hw_addr); | |
| 283 | ||
| 284 | link = hashmap_get(m->links_by_hw_addr, hw_addr); | |
| 285 | if (!link) | |
| 286 | return -ENODEV; | |
| 287 | ||
| 288 | if (ret) | |
| 289 | *ret = link; | |
| 290 | return 0; | |
| 291 | } | |
| 292 | ||
| 81357285 YW |
293 | int link_get_master(Link *link, Link **ret) { |
| 294 | assert(link); | |
| 295 | assert(link->manager); | |
| 296 | assert(ret); | |
| 297 | ||
| 298 | if (link->master_ifindex <= 0 || link->master_ifindex == link->ifindex) | |
| 299 | return -ENODEV; | |
| 300 | ||
| 6eab614d | 301 | return link_get_by_index(link->manager, link->master_ifindex, ret); |
| 81357285 YW |
302 | } |
| 303 | ||
| af9ba57a | 304 | void link_set_state(Link *link, LinkState state) { |
| e331e246 TG |
305 | assert(link); |
| 306 | ||
| 307 | if (link->state == state) | |
| 308 | return; | |
| 309 | ||
| 0beb9542 YW |
310 | log_link_debug(link, "State changed: %s -> %s", |
| 311 | link_state_to_string(link->state), | |
| 312 | link_state_to_string(state)); | |
| 313 | ||
| e331e246 TG |
314 | link->state = state; |
| 315 | ||
| 316 | link_send_changed(link, "AdministrativeState", NULL); | |
| 9092113d | 317 | link_dirty(link); |
| e331e246 TG |
318 | } |
| 319 | ||
| 2a99eed0 | 320 | int link_stop_engines(Link *link, bool may_keep_dhcp) { |
| 111bb8f9 TG |
321 | int r = 0, k; |
| 322 | ||
| 323 | assert(link); | |
| 324 | assert(link->manager); | |
| 325 | assert(link->manager->event); | |
| 326 | ||
| 80060352 ZJS |
327 | bool keep_dhcp = may_keep_dhcp && |
| 328 | link->network && | |
| 76a86ffd | 329 | !link->network->dhcp_send_decline && /* IPv4 ACD for the DHCPv4 address is running. */ |
| 80060352 ZJS |
330 | (link->manager->restarting || |
| 331 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP_ON_STOP)); | |
| 332 | ||
| 84add3cd | 333 | if (!keep_dhcp) { |
| 111bb8f9 | 334 | k = sd_dhcp_client_stop(link->dhcp_client); |
| 6a7a4e4d | 335 | if (k < 0) |
| 36c7d709 | 336 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
| 111bb8f9 TG |
337 | } |
| 338 | ||
| 2a99eed0 YW |
339 | k = sd_dhcp_server_stop(link->dhcp_server); |
| 340 | if (k < 0) | |
| 341 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 server: %m"); | |
| 342 | ||
| 35778343 | 343 | k = sd_lldp_rx_stop(link->lldp_rx); |
| 9cc65242 | 344 | if (k < 0) |
| c01b9b87 YW |
345 | r = log_link_warning_errno(link, k, "Could not stop LLDP Rx: %m"); |
| 346 | ||
| 347 | k = sd_lldp_tx_stop(link->lldp_tx); | |
| 348 | if (k < 0) | |
| 349 | r = log_link_warning_errno(link, k, "Could not stop LLDP Tx: %m"); | |
| 9cc65242 | 350 | |
| 84add3cd YW |
351 | k = sd_ipv4ll_stop(link->ipv4ll); |
| 352 | if (k < 0) | |
| 353 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); | |
| dd43110f | 354 | |
| 76a86ffd | 355 | k = ipv4acd_stop(link); |
| 2488e4d9 YW |
356 | if (k < 0) |
| 357 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client: %m"); | |
| 051e77ca | 358 | |
| 84add3cd YW |
359 | k = sd_dhcp6_client_stop(link->dhcp6_client); |
| 360 | if (k < 0) | |
| 361 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); | |
| 4138fb2c | 362 | |
| a27588d4 | 363 | k = dhcp_pd_remove(link, /* only_marked = */ false); |
| 2ffd6d73 YW |
364 | if (k < 0) |
| 365 | r = log_link_warning_errno(link, k, "Could not remove DHCPv6 PD addresses and routes: %m"); | |
| 1633c457 | 366 | |
| 84add3cd YW |
367 | k = sd_ndisc_stop(link->ndisc); |
| 368 | if (k < 0) | |
| 369 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); | |
| 4138fb2c | 370 | |
| 259c65f3 YW |
371 | ndisc_flush(link); |
| 372 | ||
| 84add3cd YW |
373 | k = sd_radv_stop(link->radv); |
| 374 | if (k < 0) | |
| 375 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
| 7465dd22 | 376 | |
| 111bb8f9 TG |
377 | return r; |
| 378 | } | |
| 379 | ||
| b22d8a00 | 380 | void link_enter_failed(Link *link) { |
| ef1ba606 | 381 | assert(link); |
| f882c247 | 382 | |
| 370e9930 | 383 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
| 2139694e TG |
384 | return; |
| 385 | ||
| 6a7a4e4d | 386 | log_link_warning(link, "Failed"); |
| 449f7554 | 387 | |
| e331e246 | 388 | link_set_state(link, LINK_STATE_FAILED); |
| fe8db0c5 | 389 | |
| 2a99eed0 | 390 | (void) link_stop_engines(link, false); |
| f882c247 TG |
391 | } |
| 392 | ||
| 6accfd31 DA |
393 | void link_check_ready(Link *link) { |
| 394 | Address *a; | |
| 6accfd31 DA |
395 | |
| 396 | assert(link); | |
| 397 | ||
| 5f58af25 YW |
398 | if (link->state == LINK_STATE_CONFIGURED) |
| 399 | return; | |
| 400 | ||
| d19b9939 YW |
401 | if (link->state != LINK_STATE_CONFIGURING) |
| 402 | return (void) log_link_debug(link, "%s(): link is in %s state.", __func__, link_state_to_string(link->state)); | |
| 6accfd31 DA |
403 | |
| 404 | if (!link->network) | |
| a7f07cbe | 405 | return (void) log_link_debug(link, "%s(): link is unmanaged.", __func__); |
| 6accfd31 | 406 | |
| 7558f9e7 YW |
407 | if (!link->tc_configured) |
| 408 | return (void) log_link_debug(link, "%s(): traffic controls are not configured.", __func__); | |
| 600b7898 | 409 | |
| a7f07cbe YW |
410 | if (link->set_link_messages > 0) |
| 411 | return (void) log_link_debug(link, "%s(): link layer is configuring.", __func__); | |
| 412 | ||
| 413 | if (!link->activated) | |
| 414 | return (void) log_link_debug(link, "%s(): link is not activated.", __func__); | |
| 415 | ||
| 7558f9e7 YW |
416 | if (link->iftype == ARPHRD_CAN) { |
| 417 | /* let's shortcut things for CAN which doesn't need most of checks below. */ | |
| 418 | link_set_state(link, LINK_STATE_CONFIGURED); | |
| 419 | return; | |
| 420 | } | |
| 421 | ||
| 879377ca YW |
422 | if (!link->stacked_netdevs_created) |
| 423 | return (void) log_link_debug(link, "%s(): stacked netdevs are not created.", __func__); | |
| 424 | ||
| 76c5a0f2 | 425 | if (!link->static_addresses_configured) |
| d19b9939 | 426 | return (void) log_link_debug(link, "%s(): static addresses are not configured.", __func__); |
| 6accfd31 | 427 | |
| 90e74a66 | 428 | SET_FOREACH(a, link->addresses) |
| 39373cb9 YW |
429 | if (!address_is_ready(a)) { |
| 430 | _cleanup_free_ char *str = NULL; | |
| 431 | ||
| 5380707a | 432 | (void) in_addr_prefix_to_string(a->family, &a->in_addr, a->prefixlen, &str); |
| 3b6a3bde | 433 | return (void) log_link_debug(link, "%s(): address %s is not ready.", __func__, strna(str)); |
| 39373cb9 | 434 | } |
| 6aa5773b | 435 | |
| 354bc760 YW |
436 | if (!link->static_address_labels_configured) |
| 437 | return (void) log_link_debug(link, "%s(): static address labels are not configured.", __func__); | |
| 438 | ||
| e5b35bf6 YW |
439 | if (!link->static_bridge_fdb_configured) |
| 440 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
| 441 | ||
| ff9e0783 YW |
442 | if (!link->static_bridge_mdb_configured) |
| 443 | return (void) log_link_debug(link, "%s(): static bridge MDB entries are not configured.", __func__); | |
| 444 | ||
| fdeba3f5 YW |
445 | if (!link->static_ipv6_proxy_ndp_configured) |
| 446 | return (void) log_link_debug(link, "%s(): static IPv6 proxy NDP addresses are not configured.", __func__); | |
| 447 | ||
| 40ca350e YW |
448 | if (!link->static_neighbors_configured) |
| 449 | return (void) log_link_debug(link, "%s(): static neighbors are not configured.", __func__); | |
| 450 | ||
| d19b9939 YW |
451 | if (!link->static_nexthops_configured) |
| 452 | return (void) log_link_debug(link, "%s(): static nexthops are not configured.", __func__); | |
| c16c7808 | 453 | |
| 76c5a0f2 YW |
454 | if (!link->static_routes_configured) |
| 455 | return (void) log_link_debug(link, "%s(): static routes are not configured.", __func__); | |
| 456 | ||
| 0e5ef6be | 457 | if (!link->static_routing_policy_rules_configured) |
| d19b9939 | 458 | return (void) log_link_debug(link, "%s(): static routing policy rules are not configured.", __func__); |
| 6accfd31 | 459 | |
| d19b9939 YW |
460 | if (!link->sr_iov_configured) |
| 461 | return (void) log_link_debug(link, "%s(): SR-IOV is not configured.", __func__); | |
| 518cd6b5 | 462 | |
| 4bcb8625 YW |
463 | /* IPv6LL is assigned after the link gains its carrier. */ |
| 464 | if (!link->network->configure_without_carrier && | |
| 465 | link_ipv6ll_enabled(link) && | |
| 466 | !in6_addr_is_set(&link->ipv6ll_address)) | |
| 467 | return (void) log_link_debug(link, "%s(): IPv6LL is not configured yet.", __func__); | |
| 468 | ||
| 3b6a3bde YW |
469 | bool has_dynamic_address = false; |
| 470 | SET_FOREACH(a, link->addresses) { | |
| 471 | if (address_is_marked(a)) | |
| 472 | continue; | |
| 473 | if (!address_exists(a)) | |
| 474 | continue; | |
| 475 | if (IN_SET(a->source, | |
| d9098371 YW |
476 | NETWORK_CONFIG_SOURCE_IPV4LL, |
| 477 | NETWORK_CONFIG_SOURCE_DHCP4, | |
| 478 | NETWORK_CONFIG_SOURCE_DHCP6, | |
| a27588d4 | 479 | NETWORK_CONFIG_SOURCE_DHCP_PD, |
| d9098371 | 480 | NETWORK_CONFIG_SOURCE_NDISC)) { |
| 3b6a3bde | 481 | has_dynamic_address = true; |
| 4bcb8625 YW |
482 | break; |
| 483 | } | |
| 3b6a3bde | 484 | } |
| 50550722 | 485 | |
| 3b6a3bde | 486 | if ((link_ipv4ll_enabled(link) || link_dhcp4_enabled(link) || link_dhcp6_with_address_enabled(link) || |
| a27588d4 | 487 | (link_dhcp_pd_is_enabled(link) && link->network->dhcp_pd_assign)) && !has_dynamic_address) |
| 4bcb8625 | 488 | /* When DHCP[46] or IPv4LL is enabled, at least one address is acquired by them. */ |
| a27588d4 | 489 | return (void) log_link_debug(link, "%s(): DHCPv4, DHCPv6, DHCP-PD or IPv4LL is enabled but no dynamic address is assigned yet.", __func__); |
| 4bcb8625 YW |
490 | |
| 491 | /* Ignore NDisc when ConfigureWithoutCarrier= is enabled, as IPv6AcceptRA= is enabled by default. */ | |
| 3b6a3bde | 492 | if (link_ipv4ll_enabled(link) || link_dhcp4_enabled(link) || |
| a27588d4 | 493 | link_dhcp6_enabled(link) || link_dhcp_pd_is_enabled(link) || |
| 3b6a3bde YW |
494 | (!link->network->configure_without_carrier && link_ipv6_accept_ra_enabled(link))) { |
| 495 | ||
| 496 | if (!link->ipv4ll_address_configured && !link->dhcp4_configured && | |
| a27588d4 | 497 | !link->dhcp6_configured && !link->dhcp_pd_configured && !link->ndisc_configured) |
| 4bcb8625 YW |
498 | /* When DHCP[46], NDisc, or IPv4LL is enabled, at least one protocol must be finished. */ |
| 499 | return (void) log_link_debug(link, "%s(): dynamic addresses or routes are not configured.", __func__); | |
| 500 | ||
| a27588d4 | 501 | log_link_debug(link, "%s(): IPv4LL:%s DHCPv4:%s DHCPv6:%s DHCP-PD:%s NDisc:%s", |
| 4bcb8625 | 502 | __func__, |
| 4bcb8625 | 503 | yes_no(link->ipv4ll_address_configured), |
| 3b6a3bde YW |
504 | yes_no(link->dhcp4_configured), |
| 505 | yes_no(link->dhcp6_configured), | |
| a27588d4 | 506 | yes_no(link->dhcp_pd_configured), |
| 3b6a3bde | 507 | yes_no(link->ndisc_configured)); |
| 463797c1 | 508 | } |
| 6accfd31 | 509 | |
| 29836c16 | 510 | link_set_state(link, LINK_STATE_CONFIGURED); |
| 6accfd31 DA |
511 | } |
| 512 | ||
| 97108953 | 513 | static int link_request_static_configs(Link *link) { |
| f882c247 TG |
514 | int r; |
| 515 | ||
| 516 | assert(link); | |
| 517 | assert(link->network); | |
| f5be5601 | 518 | assert(link->state != _LINK_STATE_INVALID); |
| f882c247 | 519 | |
| 354bc760 | 520 | r = link_request_static_addresses(link); |
| 0e5ef6be YW |
521 | if (r < 0) |
| 522 | return r; | |
| 523 | ||
| 354bc760 | 524 | r = link_request_static_address_labels(link); |
| f3ef324d YW |
525 | if (r < 0) |
| 526 | return r; | |
| e4a71bf3 | 527 | |
| e5b35bf6 YW |
528 | r = link_request_static_bridge_fdb(link); |
| 529 | if (r < 0) | |
| 530 | return r; | |
| 531 | ||
| 9a038aac YW |
532 | r = link_request_static_bridge_mdb(link); |
| 533 | if (r < 0) | |
| 534 | return r; | |
| 535 | ||
| fdeba3f5 YW |
536 | r = link_request_static_ipv6_proxy_ndp_addresses(link); |
| 537 | if (r < 0) | |
| 538 | return r; | |
| 539 | ||
| 40ca350e | 540 | r = link_request_static_neighbors(link); |
| 682c65b0 YW |
541 | if (r < 0) |
| 542 | return r; | |
| bd6379ec | 543 | |
| 76c5a0f2 | 544 | r = link_request_static_nexthops(link, false); |
| fe2bc17c YW |
545 | if (r < 0) |
| 546 | return r; | |
| f882c247 | 547 | |
| 76c5a0f2 YW |
548 | r = link_request_static_routes(link, false); |
| 549 | if (r < 0) | |
| 550 | return r; | |
| 551 | ||
| 552 | r = link_request_static_routing_policy_rules(link); | |
| 5ae0fb7f YW |
553 | if (r < 0) |
| 554 | return r; | |
| d4cdbea5 | 555 | |
| f882c247 TG |
556 | return 0; |
| 557 | } | |
| 558 | ||
| 1187fc33 YW |
559 | static int link_request_stacked_netdevs(Link *link) { |
| 560 | NetDev *netdev; | |
| e16e4b3b DS |
561 | int r; |
| 562 | ||
| 563 | assert(link); | |
| 564 | ||
| 1187fc33 | 565 | link->stacked_netdevs_created = false; |
| e16e4b3b | 566 | |
| 1187fc33 | 567 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
| b14686ff | 568 | r = link_request_stacked_netdev(link, netdev); |
| 1187fc33 YW |
569 | if (r < 0) |
| 570 | return r; | |
| 571 | } | |
| e16e4b3b | 572 | |
| bb916f35 | 573 | if (link->create_stacked_netdev_messages == 0) { |
| 1187fc33 | 574 | link->stacked_netdevs_created = true; |
| bb916f35 YW |
575 | link_check_ready(link); |
| 576 | } | |
| e16e4b3b DS |
577 | |
| 578 | return 0; | |
| 579 | } | |
| 580 | ||
| 8566df79 | 581 | static int link_acquire_dynamic_ipv6_conf(Link *link) { |
| e7ab854c TG |
582 | int r; |
| 583 | ||
| 584 | assert(link); | |
| 585 | ||
| 0f96a823 YW |
586 | r = radv_start(link); |
| 587 | if (r < 0) | |
| 588 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Advertisement engine: %m"); | |
| 7465dd22 | 589 | |
| 294f129b YW |
590 | r = ndisc_start(link); |
| 591 | if (r < 0) | |
| 592 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Discovery: %m"); | |
| cd305af1 | 593 | |
| 294f129b YW |
594 | r = dhcp6_start(link); |
| 595 | if (r < 0) | |
| 596 | return log_link_warning_errno(link, r, "Failed to start DHCPv6 client: %m"); | |
| cd305af1 | 597 | |
| e7ab854c TG |
598 | return 0; |
| 599 | } | |
| 600 | ||
| 8566df79 | 601 | static int link_acquire_dynamic_ipv4_conf(Link *link) { |
| ff254138 TG |
602 | int r; |
| 603 | ||
| 604 | assert(link); | |
| ff254138 TG |
605 | assert(link->manager); |
| 606 | assert(link->manager->event); | |
| 607 | ||
| 0107b769 | 608 | if (link->dhcp_client) { |
| 294f129b | 609 | r = dhcp4_start(link); |
| 0107b769 | 610 | if (r < 0) |
| 294f129b | 611 | return log_link_warning_errno(link, r, "Failed to start DHCPv4 client: %m"); |
| 0107b769 | 612 | |
| ccffa166 | 613 | log_link_debug(link, "Acquiring DHCPv4 lease."); |
| 5c1d3fc9 | 614 | |
| ccffa166 | 615 | } else if (link->ipv4ll) { |
| 5c1d3fc9 | 616 | r = sd_ipv4ll_start(link->ipv4ll); |
| 6a7a4e4d LP |
617 | if (r < 0) |
| 618 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
| ccffa166 YW |
619 | |
| 620 | log_link_debug(link, "Acquiring IPv4 link-local address."); | |
| 5c1d3fc9 UTL |
621 | } |
| 622 | ||
| ab486ef4 YW |
623 | if (link->dhcp_server) { |
| 624 | r = sd_dhcp_server_start(link->dhcp_server); | |
| 625 | if (r < 0) | |
| 626 | return log_link_warning_errno(link, r, "Could not start DHCP server: %m"); | |
| 627 | } | |
| 628 | ||
| 76a86ffd YW |
629 | r = ipv4acd_start(link); |
| 630 | if (r < 0) | |
| 631 | return log_link_warning_errno(link, r, "Could not start IPv4 ACD client: %m"); | |
| 632 | ||
| 6fc25497 SS |
633 | return 0; |
| 634 | } | |
| 635 | ||
| 8566df79 | 636 | static int link_acquire_dynamic_conf(Link *link) { |
| 6fc25497 SS |
637 | int r; |
| 638 | ||
| 639 | assert(link); | |
| 0f96a823 | 640 | assert(link->network); |
| 6fc25497 | 641 | |
| 8566df79 | 642 | r = link_acquire_dynamic_ipv4_conf(link); |
| 6fc25497 SS |
643 | if (r < 0) |
| 644 | return r; | |
| 645 | ||
| 94876904 | 646 | if (in6_addr_is_set(&link->ipv6ll_address)) { |
| 8566df79 | 647 | r = link_acquire_dynamic_ipv6_conf(link); |
| 6fc25497 SS |
648 | if (r < 0) |
| 649 | return r; | |
| 650 | } | |
| 651 | ||
| a27588d4 | 652 | if (!link_radv_enabled(link) || !link->network->dhcp_pd_announce) { |
| 0f96a823 YW |
653 | /* DHCPv6PD downstream does not require IPv6LL address. But may require RADV to be |
| 654 | * configured, and RADV may not be configured yet here. Only acquire subnet prefix when | |
| 655 | * RADV is disabled, or the announcement of the prefix is disabled. Otherwise, the | |
| 656 | * below will be called in radv_start(). */ | |
| a27588d4 | 657 | r = dhcp_request_prefix_delegation(link); |
| 0f96a823 | 658 | if (r < 0) |
| a27588d4 | 659 | return log_link_warning_errno(link, r, "Failed to request DHCP delegated subnet prefix: %m"); |
| 0f96a823 YW |
660 | } |
| 661 | ||
| c01b9b87 YW |
662 | if (link->lldp_tx) { |
| 663 | r = sd_lldp_tx_start(link->lldp_tx); | |
| 664 | if (r < 0) | |
| 665 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
| 666 | } | |
| 8e1ad1ea | 667 | |
| 35778343 YW |
668 | if (link->lldp_rx) { |
| 669 | r = sd_lldp_rx_start(link->lldp_rx); | |
| f8549910 YW |
670 | if (r < 0) |
| 671 | return log_link_warning_errno(link, r, "Failed to start LLDP client: %m"); | |
| 672 | } | |
| 673 | ||
| ff254138 TG |
674 | return 0; |
| 675 | } | |
| 676 | ||
| 7657ec3e | 677 | int link_ipv6ll_gained(Link *link) { |
| 0c9ee5d5 | 678 | int r; |
| deb2e523 | 679 | |
| 0c9ee5d5 | 680 | assert(link); |
| deb2e523 | 681 | |
| 0c9ee5d5 | 682 | log_link_info(link, "Gained IPv6LL"); |
| deb2e523 | 683 | |
| 7657ec3e YW |
684 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) |
| 685 | return 0; | |
| 0c9ee5d5 | 686 | |
| 7657ec3e YW |
687 | r = link_acquire_dynamic_ipv6_conf(link); |
| 688 | if (r < 0) | |
| 689 | return r; | |
| 0c9ee5d5 | 690 | |
| 7657ec3e | 691 | link_check_ready(link); |
| 0c9ee5d5 | 692 | return 0; |
| deb2e523 TG |
693 | } |
| 694 | ||
| 112a0972 | 695 | int link_handle_bound_to_list(Link *link) { |
| 0d4ad91d AR |
696 | bool required_up = false; |
| 697 | bool link_is_up = false; | |
| 852a3916 | 698 | Link *l; |
| 0d4ad91d AR |
699 | |
| 700 | assert(link); | |
| 701 | ||
| ad82f0c3 YW |
702 | /* If at least one interface in bound_to_links has carrier, then make this interface up. |
| 703 | * If all interfaces in bound_to_links do not, then make this interface down. */ | |
| 704 | ||
| 0d4ad91d AR |
705 | if (hashmap_isempty(link->bound_to_links)) |
| 706 | return 0; | |
| 707 | ||
| 708 | if (link->flags & IFF_UP) | |
| 709 | link_is_up = true; | |
| 710 | ||
| 852a3916 | 711 | HASHMAP_FOREACH(l, link->bound_to_links) |
| 0d4ad91d AR |
712 | if (link_has_carrier(l)) { |
| 713 | required_up = true; | |
| 714 | break; | |
| 715 | } | |
| 716 | ||
| 852a3916 | 717 | if (!required_up && link_is_up) |
| 68f52063 | 718 | return link_request_to_bring_up_or_down(link, /* up = */ false); |
| 852a3916 | 719 | if (required_up && !link_is_up) |
| 68f52063 | 720 | return link_request_to_bring_up_or_down(link, /* up = */ true); |
| 0d4ad91d AR |
721 | |
| 722 | return 0; | |
| 723 | } | |
| 724 | ||
| 725 | static int link_handle_bound_by_list(Link *link) { | |
| 0d4ad91d AR |
726 | Link *l; |
| 727 | int r; | |
| 728 | ||
| 729 | assert(link); | |
| 730 | ||
| ad82f0c3 YW |
731 | /* Update up or down state of interfaces which depend on this interface's carrier state. */ |
| 732 | ||
| 0d4ad91d AR |
733 | if (hashmap_isempty(link->bound_by_links)) |
| 734 | return 0; | |
| 735 | ||
| 852a3916 | 736 | HASHMAP_FOREACH(l, link->bound_by_links) { |
| 0d4ad91d AR |
737 | r = link_handle_bound_to_list(l); |
| 738 | if (r < 0) | |
| 739 | return r; | |
| 740 | } | |
| 741 | ||
| 742 | return 0; | |
| 743 | } | |
| 744 | ||
| 745 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
| 746 | int r; | |
| 747 | ||
| 748 | assert(link); | |
| 749 | assert(carrier); | |
| 750 | ||
| 751 | if (link == carrier) | |
| 752 | return 0; | |
| 753 | ||
| 754 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
| 755 | return 0; | |
| 756 | ||
| 190b3b5c | 757 | r = hashmap_ensure_put(h, NULL, INT_TO_PTR(carrier->ifindex), carrier); |
| 0d4ad91d AR |
758 | if (r < 0) |
| 759 | return r; | |
| 760 | ||
| 9092113d YW |
761 | link_dirty(link); |
| 762 | ||
| 0d4ad91d AR |
763 | return 0; |
| 764 | } | |
| 765 | ||
| 766 | static int link_new_bound_by_list(Link *link) { | |
| 767 | Manager *m; | |
| 768 | Link *carrier; | |
| 0d4ad91d | 769 | int r; |
| 0d4ad91d AR |
770 | |
| 771 | assert(link); | |
| 772 | assert(link->manager); | |
| 773 | ||
| 774 | m = link->manager; | |
| 775 | ||
| 6eab614d | 776 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
| 0d4ad91d AR |
777 | if (!carrier->network) |
| 778 | continue; | |
| 779 | ||
| 780 | if (strv_isempty(carrier->network->bind_carrier)) | |
| 781 | continue; | |
| 782 | ||
| 191a3f16 | 783 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname)) { |
| 0d4ad91d AR |
784 | r = link_put_carrier(link, carrier, &link->bound_by_links); |
| 785 | if (r < 0) | |
| 786 | return r; | |
| 0d4ad91d AR |
787 | } |
| 788 | } | |
| 789 | ||
| 90e74a66 | 790 | HASHMAP_FOREACH(carrier, link->bound_by_links) { |
| 0d4ad91d AR |
791 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
| 792 | if (r < 0) | |
| 793 | return r; | |
| 0d4ad91d AR |
794 | } |
| 795 | ||
| 796 | return 0; | |
| 797 | } | |
| 798 | ||
| 799 | static int link_new_bound_to_list(Link *link) { | |
| 800 | Manager *m; | |
| 801 | Link *carrier; | |
| 0d4ad91d | 802 | int r; |
| 0d4ad91d AR |
803 | |
| 804 | assert(link); | |
| 805 | assert(link->manager); | |
| 806 | ||
| 807 | if (!link->network) | |
| 808 | return 0; | |
| 809 | ||
| 810 | if (strv_isempty(link->network->bind_carrier)) | |
| 811 | return 0; | |
| 812 | ||
| 813 | m = link->manager; | |
| 814 | ||
| 6eab614d | 815 | HASHMAP_FOREACH(carrier, m->links_by_index) { |
| 191a3f16 | 816 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname)) { |
| 0d4ad91d AR |
817 | r = link_put_carrier(link, carrier, &link->bound_to_links); |
| 818 | if (r < 0) | |
| 819 | return r; | |
| 0d4ad91d AR |
820 | } |
| 821 | } | |
| 822 | ||
| 852a3916 | 823 | HASHMAP_FOREACH(carrier, link->bound_to_links) { |
| 0d4ad91d AR |
824 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); |
| 825 | if (r < 0) | |
| 826 | return r; | |
| 0d4ad91d AR |
827 | } |
| 828 | ||
| 829 | return 0; | |
| 830 | } | |
| 831 | ||
| 0d4ad91d | 832 | static void link_free_bound_to_list(Link *link) { |
| 9092113d | 833 | bool updated = false; |
| 0d4ad91d | 834 | Link *bound_to; |
| 0d4ad91d | 835 | |
| 9092113d YW |
836 | assert(link); |
| 837 | ||
| 838 | while ((bound_to = hashmap_steal_first(link->bound_to_links))) { | |
| 839 | updated = true; | |
| 0d4ad91d AR |
840 | |
| 841 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
| 84de38c5 | 842 | link_dirty(bound_to); |
| 0d4ad91d AR |
843 | } |
| 844 | ||
| 9092113d YW |
845 | if (updated) |
| 846 | link_dirty(link); | |
| 0d4ad91d AR |
847 | } |
| 848 | ||
| 849 | static void link_free_bound_by_list(Link *link) { | |
| 9092113d | 850 | bool updated = false; |
| 0d4ad91d | 851 | Link *bound_by; |
| 0d4ad91d | 852 | |
| 9092113d YW |
853 | assert(link); |
| 854 | ||
| 855 | while ((bound_by = hashmap_steal_first(link->bound_by_links))) { | |
| 856 | updated = true; | |
| 0d4ad91d AR |
857 | |
| 858 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
| 84de38c5 | 859 | link_dirty(bound_by); |
| 0d4ad91d AR |
860 | link_handle_bound_to_list(bound_by); |
| 861 | } | |
| 862 | } | |
| 863 | ||
| 9092113d YW |
864 | if (updated) |
| 865 | link_dirty(link); | |
| 0d4ad91d AR |
866 | } |
| 867 | ||
| 81357285 | 868 | static int link_append_to_master(Link *link) { |
| 5f707e12 YW |
869 | Link *master; |
| 870 | int r; | |
| 871 | ||
| 872 | assert(link); | |
| 5f707e12 | 873 | |
| 81357285 YW |
874 | /* - The link may have no master. |
| 875 | * - RTM_NEWLINK message about master interface may not be received yet. */ | |
| 876 | if (link_get_master(link, &master) < 0) | |
| 877 | return 0; | |
| 5f707e12 | 878 | |
| de7fef4b | 879 | r = set_ensure_put(&master->slaves, NULL, link); |
| 38288f0b | 880 | if (r <= 0) |
| 5f707e12 YW |
881 | return r; |
| 882 | ||
| 883 | link_ref(link); | |
| 884 | return 0; | |
| 885 | } | |
| 886 | ||
| 81357285 | 887 | static void link_drop_from_master(Link *link) { |
| 5f707e12 YW |
888 | Link *master; |
| 889 | ||
| 890 | assert(link); | |
| 891 | ||
| 81357285 | 892 | if (!link->manager) |
| 5f707e12 YW |
893 | return; |
| 894 | ||
| 81357285 | 895 | if (link_get_master(link, &master) < 0) |
| 5f707e12 YW |
896 | return; |
| 897 | ||
| 898 | link_unref(set_remove(master->slaves, link)); | |
| 899 | } | |
| 900 | ||
| 56001f02 YW |
901 | static void link_drop_requests(Link *link) { |
| 902 | Request *req; | |
| 903 | ||
| 904 | assert(link); | |
| 905 | assert(link->manager); | |
| 906 | ||
| 907 | ORDERED_SET_FOREACH(req, link->manager->request_queue) | |
| 908 | if (req->link == link) | |
| e26d3d40 | 909 | request_detach(link->manager, req); |
| 56001f02 YW |
910 | } |
| 911 | ||
| cc2d7efc | 912 | static Link *link_drop(Link *link) { |
| 63130eb3 | 913 | if (!link) |
| cc2d7efc | 914 | return NULL; |
| 0d4ad91d | 915 | |
| 63130eb3 YW |
916 | assert(link->manager); |
| 917 | ||
| 0d4ad91d AR |
918 | link_set_state(link, LINK_STATE_LINGER); |
| 919 | ||
| 63130eb3 YW |
920 | /* Drop all references from other links and manager. Note that async netlink calls may have |
| 921 | * references to the link, and they will be dropped when we receive replies. */ | |
| 922 | ||
| 56001f02 YW |
923 | link_drop_requests(link); |
| 924 | ||
| bb193d2d YW |
925 | link_free_bound_to_list(link); |
| 926 | link_free_bound_by_list(link); | |
| 0d4ad91d | 927 | |
| 81357285 | 928 | link_drop_from_master(link); |
| 5f707e12 | 929 | |
| 4c78dc17 YW |
930 | if (link->state_file) |
| 931 | (void) unlink(link->state_file); | |
| 932 | ||
| 63130eb3 YW |
933 | link_clean(link); |
| 934 | ||
| 0b54c870 YW |
935 | STRV_FOREACH(n, link->alternative_names) |
| 936 | hashmap_remove(link->manager->links_by_name, *n); | |
| 0b54c870 YW |
937 | hashmap_remove(link->manager->links_by_name, link->ifname); |
| 938 | ||
| fe321d45 | 939 | /* bonding master and its slaves have the same hardware address. */ |
| e74f1d07 | 940 | hashmap_remove_value(link->manager->links_by_hw_addr, &link->hw_addr, link); |
| fe321d45 | 941 | |
| 63130eb3 | 942 | /* The following must be called at last. */ |
| 6eab614d | 943 | assert_se(hashmap_remove(link->manager->links_by_index, INT_TO_PTR(link->ifindex)) == link); |
| cc2d7efc | 944 | return link_unref(link); |
| 0d4ad91d AR |
945 | } |
| 946 | ||
| 5e5b137a | 947 | static int link_drop_foreign_config(Link *link) { |
| 0b81225e YW |
948 | int k, r; |
| 949 | ||
| 950 | assert(link); | |
| 951 | assert(link->manager); | |
| 5e5b137a | 952 | |
| 5e3bb5da YW |
953 | /* Drop foreign config, but ignore unmanaged, loopback, or critical interfaces. We do not want |
| 954 | * to remove loopback address or addresses used for root NFS. */ | |
| 955 | ||
| 956 | if (IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) | |
| 957 | return 0; | |
| 958 | if (FLAGS_SET(link->flags, IFF_LOOPBACK)) | |
| 959 | return 0; | |
| 960 | if (link->network->keep_configuration == KEEP_CONFIGURATION_YES) | |
| 961 | return 0; | |
| 962 | ||
| e36d601c | 963 | r = link_drop_foreign_routes(link); |
| 5e5b137a | 964 | |
| e36d601c | 965 | k = link_drop_foreign_nexthops(link); |
| 0b81225e YW |
966 | if (k < 0 && r >= 0) |
| 967 | r = k; | |
| 968 | ||
| e36d601c | 969 | k = link_drop_foreign_addresses(link); |
| 0b81225e YW |
970 | if (k < 0 && r >= 0) |
| 971 | r = k; | |
| d1bdafd2 | 972 | |
| e36d601c | 973 | k = link_drop_foreign_neighbors(link); |
| 25b82b6e YW |
974 | if (k < 0 && r >= 0) |
| 975 | r = k; | |
| 976 | ||
| 0b81225e YW |
977 | k = manager_drop_foreign_routing_policy_rules(link->manager); |
| 978 | if (k < 0 && r >= 0) | |
| 979 | r = k; | |
| 980 | ||
| 981 | return r; | |
| 5e5b137a TG |
982 | } |
| 983 | ||
| a0e99a37 | 984 | static int link_drop_managed_config(Link *link) { |
| 0b81225e YW |
985 | int k, r; |
| 986 | ||
| 987 | assert(link); | |
| 988 | assert(link->manager); | |
| 3104883d | 989 | |
| a0e99a37 | 990 | r = link_drop_managed_routes(link); |
| 3104883d | 991 | |
| a0e99a37 | 992 | k = link_drop_managed_nexthops(link); |
| 0b81225e YW |
993 | if (k < 0 && r >= 0) |
| 994 | r = k; | |
| d1bdafd2 | 995 | |
| a0e99a37 | 996 | k = link_drop_managed_addresses(link); |
| 0b81225e YW |
997 | if (k < 0 && r >= 0) |
| 998 | r = k; | |
| 999 | ||
| a0e99a37 | 1000 | k = link_drop_managed_neighbors(link); |
| 25b82b6e YW |
1001 | if (k < 0 && r >= 0) |
| 1002 | r = k; | |
| 1003 | ||
| a0e99a37 | 1004 | k = link_drop_managed_routing_policy_rules(link); |
| 0b81225e YW |
1005 | if (k < 0 && r >= 0) |
| 1006 | r = k; | |
| 3104883d | 1007 | |
| 0b81225e | 1008 | return r; |
| 3104883d SS |
1009 | } |
| 1010 | ||
| b4564f4e YW |
1011 | static void link_foreignize_config(Link *link) { |
| 1012 | assert(link); | |
| 1013 | assert(link->manager); | |
| 1014 | ||
| 1015 | link_foreignize_routes(link); | |
| 1016 | link_foreignize_nexthops(link); | |
| 1017 | link_foreignize_addresses(link); | |
| 1018 | link_foreignize_neighbors(link); | |
| 1019 | link_foreignize_routing_policy_rules(link); | |
| 1020 | } | |
| 1021 | ||
| c3b94251 | 1022 | static int link_configure(Link *link) { |
| 4ecdcb07 YW |
1023 | int r; |
| 1024 | ||
| ef1ba606 | 1025 | assert(link); |
| b22d8a00 | 1026 | assert(link->network); |
| bd08ce56 | 1027 | assert(link->state == LINK_STATE_INITIALIZED); |
| a748b692 | 1028 | |
| 1187fc33 YW |
1029 | link_set_state(link, LINK_STATE_CONFIGURING); |
| 1030 | ||
| 3cf58ef3 YW |
1031 | r = link_new_bound_to_list(link); |
| 1032 | if (r < 0) | |
| 1033 | return r; | |
| 1034 | ||
| 1dec9d81 | 1035 | r = link_request_traffic_control(link); |
| 4ecdcb07 YW |
1036 | if (r < 0) |
| 1037 | return r; | |
| 1038 | ||
| 7558f9e7 YW |
1039 | if (link->iftype == ARPHRD_CAN) { |
| 1040 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
| 1041 | r = link_request_to_set_can(link); | |
| 1042 | if (r < 0) | |
| 1043 | return r; | |
| 1044 | ||
| 1045 | return link_request_to_activate(link); | |
| 1046 | } | |
| 1047 | ||
| cb8453cc | 1048 | r = link_request_sr_iov_vfs(link); |
| 518cd6b5 SS |
1049 | if (r < 0) |
| 1050 | return r; | |
| 1051 | ||
| 5e0534f1 | 1052 | r = link_set_sysctl(link); |
| b69c3180 SS |
1053 | if (r < 0) |
| 1054 | return r; | |
| 8749cbcd | 1055 | |
| d05c332c | 1056 | r = link_request_to_set_mac(link, /* allow_retry = */ true); |
| e16e4b3b DS |
1057 | if (r < 0) |
| 1058 | return r; | |
| 1059 | ||
| 72e65e6f YW |
1060 | r = link_request_to_set_ipoib(link); |
| 1061 | if (r < 0) | |
| 1062 | return r; | |
| 1063 | ||
| 1187fc33 | 1064 | r = link_request_to_set_flags(link); |
| e16e4b3b DS |
1065 | if (r < 0) |
| 1066 | return r; | |
| 1067 | ||
| 1187fc33 | 1068 | r = link_request_to_set_group(link); |
| 99d2baa2 SS |
1069 | if (r < 0) |
| 1070 | return r; | |
| 1071 | ||
| 1187fc33 YW |
1072 | r = link_configure_mtu(link); |
| 1073 | if (r < 0) | |
| 1074 | return r; | |
| 1075 | ||
| 1076 | r = link_request_to_set_addrgen_mode(link); | |
| 1077 | if (r < 0) | |
| 1078 | return r; | |
| 1079 | ||
| 1080 | r = link_request_to_set_master(link); | |
| 1081 | if (r < 0) | |
| 1082 | return r; | |
| 1083 | ||
| 1084 | r = link_request_stacked_netdevs(link); | |
| 1085 | if (r < 0) | |
| 1086 | return r; | |
| 1087 | ||
| 1088 | r = link_request_to_set_bond(link); | |
| 1089 | if (r < 0) | |
| 1090 | return r; | |
| 1091 | ||
| 1092 | r = link_request_to_set_bridge(link); | |
| 1093 | if (r < 0) | |
| 1094 | return r; | |
| 1095 | ||
| 1096 | r = link_request_to_set_bridge_vlan(link); | |
| 1097 | if (r < 0) | |
| 1098 | return r; | |
| 1099 | ||
| 1100 | r = link_request_to_activate(link); | |
| 89fe6535 SS |
1101 | if (r < 0) |
| 1102 | return r; | |
| 1103 | ||
| 2ffd6d73 YW |
1104 | r = ipv4ll_configure(link); |
| 1105 | if (r < 0) | |
| 1106 | return r; | |
| 64b21ece | 1107 | |
| ccffa166 | 1108 | r = link_request_dhcp4_client(link); |
| 2ffd6d73 YW |
1109 | if (r < 0) |
| 1110 | return r; | |
| eb34d4af | 1111 | |
| ccffa166 | 1112 | r = link_request_dhcp6_client(link); |
| 2ffd6d73 YW |
1113 | if (r < 0) |
| 1114 | return r; | |
| f5a8c43f | 1115 | |
| ba4c7184 | 1116 | r = link_request_ndisc(link); |
| 2ffd6d73 YW |
1117 | if (r < 0) |
| 1118 | return r; | |
| 4138fb2c | 1119 | |
| 1d28a3cf YW |
1120 | r = link_request_dhcp_server(link); |
| 1121 | if (r < 0) | |
| 1122 | return r; | |
| 1123 | ||
| a254fab2 | 1124 | r = link_request_radv(link); |
| 086b8853 YW |
1125 | if (r < 0) |
| 1126 | return r; | |
| 7465dd22 | 1127 | |
| 2ffd6d73 YW |
1128 | r = link_lldp_rx_configure(link); |
| 1129 | if (r < 0) | |
| 1130 | return r; | |
| ce43e484 | 1131 | |
| c01b9b87 YW |
1132 | r = link_lldp_tx_configure(link); |
| 1133 | if (r < 0) | |
| 1134 | return r; | |
| 1135 | ||
| 5e3bb5da YW |
1136 | r = link_drop_foreign_config(link); |
| 1137 | if (r < 0) | |
| 1138 | return r; | |
| 4c649652 | 1139 | |
| 1187fc33 YW |
1140 | r = link_request_static_configs(link); |
| 1141 | if (r < 0) | |
| 1142 | return r; | |
| 1143 | ||
| 1144 | if (!link_has_carrier(link)) | |
| 1145 | return 0; | |
| 1146 | ||
| 1147 | return link_acquire_dynamic_conf(link); | |
| 505f8da7 TG |
1148 | } |
| 1149 | ||
| 170e88c8 YW |
1150 | static int link_get_network(Link *link, Network **ret) { |
| 1151 | Network *network; | |
| 1a3caa49 | 1152 | int r; |
| 170e88c8 YW |
1153 | |
| 1154 | assert(link); | |
| 1155 | assert(link->manager); | |
| 1156 | assert(ret); | |
| 1157 | ||
| 1158 | ORDERED_HASHMAP_FOREACH(network, link->manager->networks) { | |
| 1159 | bool warn = false; | |
| 1160 | ||
| 1a3caa49 | 1161 | r = net_match_config( |
| 170e88c8 YW |
1162 | &network->match, |
| 1163 | link->sd_device, | |
| 52135071 YW |
1164 | &link->hw_addr, |
| 1165 | &link->permanent_hw_addr, | |
| 170e88c8 YW |
1166 | link->driver, |
| 1167 | link->iftype, | |
| 65022cd7 | 1168 | link->kind, |
| 170e88c8 YW |
1169 | link->ifname, |
| 1170 | link->alternative_names, | |
| 1171 | link->wlan_iftype, | |
| 1172 | link->ssid, | |
| 1a3caa49 YW |
1173 | &link->bssid); |
| 1174 | if (r < 0) | |
| 1175 | return r; | |
| 1176 | if (r == 0) | |
| 170e88c8 YW |
1177 | continue; |
| 1178 | ||
| 1179 | if (network->match.ifname && link->sd_device) { | |
| 1180 | uint8_t name_assign_type = NET_NAME_UNKNOWN; | |
| 1181 | const char *attr; | |
| 1182 | ||
| 1183 | if (sd_device_get_sysattr_value(link->sd_device, "name_assign_type", &attr) >= 0) | |
| 1184 | (void) safe_atou8(attr, &name_assign_type); | |
| 1185 | ||
| 1186 | warn = name_assign_type == NET_NAME_ENUM; | |
| 1187 | } | |
| 1188 | ||
| 1189 | log_link_full(link, warn ? LOG_WARNING : LOG_DEBUG, | |
| 1190 | "found matching network '%s'%s.", | |
| 1191 | network->filename, | |
| 1192 | warn ? ", based on potentially unpredictable interface name" : ""); | |
| 1193 | ||
| 1194 | if (network->unmanaged) | |
| 1195 | return -ENOENT; | |
| 1196 | ||
| 1197 | *ret = network; | |
| 1198 | return 0; | |
| 1199 | } | |
| 1200 | ||
| 1201 | return -ENOENT; | |
| 1202 | } | |
| 1203 | ||
| 7f80fa12 | 1204 | static int link_reconfigure_impl(Link *link, bool force) { |
| cb71e9c6 | 1205 | Network *network = NULL; |
| 9aa2585e | 1206 | NetDev *netdev = NULL; |
| ad932b15 YW |
1207 | int r; |
| 1208 | ||
| 5a1860f7 | 1209 | assert(link); |
| 572b21d9 | 1210 | |
| fb961119 YW |
1211 | if (!IN_SET(link->state, LINK_STATE_INITIALIZED, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED, LINK_STATE_UNMANAGED)) |
| 1212 | return 0; | |
| 1213 | ||
| 9aa2585e YW |
1214 | r = netdev_get(link->manager, link->ifname, &netdev); |
| 1215 | if (r < 0 && r != -ENOENT) | |
| 1216 | return r; | |
| 1217 | ||
| 170e88c8 | 1218 | r = link_get_network(link, &network); |
| cb71e9c6 | 1219 | if (r < 0 && r != -ENOENT) |
| ad932b15 YW |
1220 | return r; |
| 1221 | ||
| fb961119 YW |
1222 | if (link->state != LINK_STATE_UNMANAGED && !network) |
| 1223 | /* If link is in initialized state, then link->network is also NULL. */ | |
| 1224 | force = true; | |
| 1225 | ||
| 99b8517c | 1226 | if (link->network == network && !force) |
| ad932b15 YW |
1227 | return 0; |
| 1228 | ||
| fb961119 YW |
1229 | if (network) { |
| 1230 | if (link->state == LINK_STATE_INITIALIZED) | |
| 1231 | log_link_info(link, "Configuring with %s.", network->filename); | |
| 1232 | else | |
| 1233 | log_link_info(link, "Reconfiguring with %s.", network->filename); | |
| 1234 | } else | |
| 1235 | log_link_full(link, link->state == LINK_STATE_INITIALIZED ? LOG_DEBUG : LOG_INFO, | |
| 1236 | "Unmanaging interface."); | |
| ad932b15 YW |
1237 | |
| 1238 | /* Dropping old .network file */ | |
| 2a99eed0 | 1239 | r = link_stop_engines(link, false); |
| 572b21d9 | 1240 | if (r < 0) |
| ad932b15 | 1241 | return r; |
| ad932b15 | 1242 | |
| 19d9a5ad YW |
1243 | link_drop_requests(link); |
| 1244 | ||
| 81db4f3d | 1245 | if (network && !force && network->keep_configuration != KEEP_CONFIGURATION_YES) |
| b4564f4e YW |
1246 | /* When a new/updated .network file is assigned, first make all configs (addresses, |
| 1247 | * routes, and so on) foreign, and then drop unnecessary configs later by | |
| 81db4f3d YW |
1248 | * link_drop_foreign_config() in link_configure(). |
| 1249 | * Note, when KeepConfiguration=yes, link_drop_foreign_config() does nothing. Hence, | |
| 1250 | * here we need to drop the configs such as addresses, routes, and so on configured by | |
| 1251 | * the previously assigned .network file. */ | |
| b4564f4e YW |
1252 | link_foreignize_config(link); |
| 1253 | else { | |
| a0e99a37 YW |
1254 | /* Remove all managed configs. Note, foreign configs are removed in later by |
| 1255 | * link_configure() -> link_drop_foreign_config() if the link is managed by us. */ | |
| 1256 | r = link_drop_managed_config(link); | |
| b4564f4e YW |
1257 | if (r < 0) |
| 1258 | return r; | |
| 1259 | } | |
| ad932b15 | 1260 | |
| 3cf58ef3 YW |
1261 | /* The bound_to map depends on .network file, hence it needs to be freed. But, do not free the |
| 1262 | * bound_by map. Otherwise, if a link enters unmanaged state below, then its carrier state will | |
| 1263 | * not propagated to other interfaces anymore. Moreover, it is not necessary to recreate the | |
| 1264 | * map here, as it depends on .network files assigned to other links. */ | |
| 1265 | link_free_bound_to_list(link); | |
| 1266 | ||
| ad932b15 YW |
1267 | link_free_engines(link); |
| 1268 | link->network = network_unref(link->network); | |
| 1269 | ||
| 9aa2585e YW |
1270 | netdev_unref(link->netdev); |
| 1271 | link->netdev = netdev_ref(netdev); | |
| 1272 | ||
| cb71e9c6 YW |
1273 | if (!network) { |
| 1274 | link_set_state(link, LINK_STATE_UNMANAGED); | |
| 1275 | return 0; | |
| 1276 | } | |
| 1277 | ||
| ad932b15 | 1278 | /* Then, apply new .network file */ |
| 9092113d | 1279 | link->network = network_ref(network); |
| b156a95d | 1280 | link_update_operstate(link, true); |
| 9092113d | 1281 | link_dirty(link); |
| ad932b15 | 1282 | |
| ad932b15 | 1283 | link_set_state(link, LINK_STATE_INITIALIZED); |
| 61135582 | 1284 | link->activated = false; |
| ad932b15 | 1285 | |
| ad932b15 YW |
1286 | r = link_configure(link); |
| 1287 | if (r < 0) | |
| 1288 | return r; | |
| 1289 | ||
| 0e397560 | 1290 | return 1; |
| ad932b15 YW |
1291 | } |
| 1292 | ||
| 96f5f9ef | 1293 | static int link_reconfigure_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, bool force) { |
| 572b21d9 YW |
1294 | int r; |
| 1295 | ||
| d09a179e YW |
1296 | assert(link); |
| 1297 | ||
| 5a1860f7 YW |
1298 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to update link state"); |
| 1299 | if (r <= 0) | |
| 1300 | return r; | |
| 1301 | ||
| 7f80fa12 | 1302 | r = link_reconfigure_impl(link, force); |
| d09a179e | 1303 | if (r < 0) { |
| 572b21d9 | 1304 | link_enter_failed(link); |
| d09a179e YW |
1305 | return 0; |
| 1306 | } | |
| 572b21d9 | 1307 | |
| d09a179e | 1308 | return r; |
| 572b21d9 YW |
1309 | } |
| 1310 | ||
| 5a1860f7 | 1311 | static int link_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
| 96f5f9ef | 1312 | return link_reconfigure_handler_internal(rtnl, m, link, /* force = */ false); |
| 5a1860f7 | 1313 | } |
| 572b21d9 | 1314 | |
| 5a1860f7 | 1315 | static int link_force_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
| 96f5f9ef | 1316 | return link_reconfigure_handler_internal(rtnl, m, link, /* force = */ true); |
| 572b21d9 YW |
1317 | } |
| 1318 | ||
| d09a179e | 1319 | static int link_reconfigure_after_sleep_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
| 572b21d9 YW |
1320 | int r; |
| 1321 | ||
| d09a179e YW |
1322 | assert(link); |
| 1323 | ||
| 96f5f9ef | 1324 | r = link_reconfigure_handler_internal(rtnl, m, link, /* force = */ false); |
| d09a179e YW |
1325 | if (r != 0) |
| 1326 | return r; | |
| 1327 | ||
| 1328 | /* r == 0 means an error occurs, the link is unmanaged, or the matching network file is unchanged. */ | |
| 1329 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) | |
| 1330 | return 0; | |
| 1331 | ||
| 1332 | /* re-request static configs, and restart engines. */ | |
| 1333 | r = link_stop_engines(link, false); | |
| 1334 | if (r < 0) { | |
| 1335 | link_enter_failed(link); | |
| 1336 | return 0; | |
| 1337 | } | |
| 1338 | ||
| 1339 | r = link_acquire_dynamic_conf(link); | |
| 1340 | if (r < 0) { | |
| 1341 | link_enter_failed(link); | |
| 1342 | return 0; | |
| 1343 | } | |
| 1344 | ||
| 1345 | r = link_request_static_configs(link); | |
| 1346 | if (r < 0) { | |
| 1347 | link_enter_failed(link); | |
| 1348 | return 0; | |
| 1349 | } | |
| 1350 | ||
| 1351 | return 0; | |
| 1352 | } | |
| 1353 | ||
| 1354 | static int link_reconfigure_internal(Link *link, link_netlink_message_handler_t callback) { | |
| 1355 | int r; | |
| 1356 | ||
| 1357 | assert(link); | |
| 1358 | assert(callback); | |
| 1359 | ||
| 8bceafa7 | 1360 | /* When link in pending or initialized state, then link_configure() will be called. To prevent |
| f8dd4077 ZJS |
1361 | * the function from being called multiple times simultaneously, refuse to reconfigure the |
| 1362 | * interface in these cases. */ | |
| 8bceafa7 | 1363 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED, LINK_STATE_LINGER)) |
| f8dd4077 | 1364 | return 0; /* 0 means no-op. */ |
| 2c0d7ed3 | 1365 | |
| d09a179e | 1366 | r = link_call_getlink(link, callback); |
| 572b21d9 YW |
1367 | if (r < 0) |
| 1368 | return r; | |
| 1369 | ||
| 8bceafa7 | 1370 | return 1; /* 1 means the interface will be reconfigured. */ |
| 572b21d9 YW |
1371 | } |
| 1372 | ||
| d09a179e YW |
1373 | int link_reconfigure(Link *link, bool force) { |
| 1374 | return link_reconfigure_internal(link, force ? link_force_reconfigure_handler : link_reconfigure_handler); | |
| 1375 | } | |
| 1376 | ||
| 1377 | int link_reconfigure_after_sleep(Link *link) { | |
| 1378 | return link_reconfigure_internal(link, link_reconfigure_after_sleep_handler); | |
| 1379 | } | |
| 1380 | ||
| e6bf7774 | 1381 | static int link_initialized_and_synced(Link *link) { |
| 505f8da7 TG |
1382 | int r; |
| 1383 | ||
| 1384 | assert(link); | |
| 505f8da7 TG |
1385 | assert(link->manager); |
| 1386 | ||
| faa2e64f YW |
1387 | if (link->manager->test_mode) { |
| 1388 | log_link_debug(link, "Running in test mode, refusing to enter initialized state."); | |
| 1389 | link_set_state(link, LINK_STATE_UNMANAGED); | |
| 1390 | return 0; | |
| 1391 | } | |
| 1392 | ||
| fb961119 | 1393 | /* This may get called either from the asynchronous netlink callback, |
| 0d411b7f | 1394 | * or directly from link_check_initialized() if running in a container. */ |
| bd08ce56 | 1395 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) |
| 4232cf04 | 1396 | return 0; |
| 505f8da7 | 1397 | |
| 6a7a4e4d | 1398 | log_link_debug(link, "Link state is up-to-date"); |
| bd08ce56 | 1399 | link_set_state(link, LINK_STATE_INITIALIZED); |
| 505f8da7 | 1400 | |
| 0d4ad91d AR |
1401 | r = link_new_bound_by_list(link); |
| 1402 | if (r < 0) | |
| 1403 | return r; | |
| 1404 | ||
| 1405 | r = link_handle_bound_by_list(link); | |
| 1406 | if (r < 0) | |
| 1407 | return r; | |
| 1408 | ||
| fb961119 | 1409 | return link_reconfigure_impl(link, /* force = */ false); |
| 505f8da7 TG |
1410 | } |
| 1411 | ||
| 302a796f | 1412 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
| 4ff296b0 YW |
1413 | int r; |
| 1414 | ||
| 5a1860f7 YW |
1415 | r = link_getlink_handler_internal(rtnl, m, link, "Failed to wait for the interface to be initialized"); |
| 1416 | if (r <= 0) | |
| 0b54c870 | 1417 | return r; |
| 572b21d9 | 1418 | |
| 4ff296b0 YW |
1419 | r = link_initialized_and_synced(link); |
| 1420 | if (r < 0) | |
| 1421 | link_enter_failed(link); | |
| 5a1860f7 YW |
1422 | |
| 1423 | return 0; | |
| e6bf7774 YW |
1424 | } |
| 1425 | ||
| 3be9d62a | 1426 | static int link_initialized(Link *link, sd_device *device) { |
| 4f561e8e | 1427 | assert(link); |
| 4f561e8e TG |
1428 | assert(device); |
| 1429 | ||
| 160203e9 YW |
1430 | /* Always replace with the new sd_device object. As the sysname (and possibly other properties |
| 1431 | * or sysattrs) may be outdated. */ | |
| 1432 | sd_device_ref(device); | |
| 1433 | sd_device_unref(link->sd_device); | |
| 1434 | link->sd_device = device; | |
| 4f561e8e | 1435 | |
| 160203e9 YW |
1436 | /* Do not ignore unamanaged state case here. If an interface is renamed after being once |
| 1437 | * configured, and the corresponding .network file has Name= in [Match] section, then the | |
| 1438 | * interface may be already in unmanaged state. See #20657. */ | |
| 1439 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_UNMANAGED)) | |
| 679b3605 TG |
1440 | return 0; |
| 1441 | ||
| 79008bdd | 1442 | log_link_debug(link, "udev initialized link"); |
| bd08ce56 | 1443 | link_set_state(link, LINK_STATE_INITIALIZED); |
| 4f561e8e | 1444 | |
| 3c9b8860 TG |
1445 | /* udev has initialized the link, but we don't know if we have yet |
| 1446 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
| 1447 | * when it returns we know that the pending NEWLINKs have already been | |
| 1448 | * processed and that we are up-to-date */ | |
| 4f561e8e | 1449 | |
| 5a1860f7 | 1450 | return link_call_getlink(link, link_initialized_handler); |
| cc2d7efc YW |
1451 | } |
| 1452 | ||
| 0d411b7f | 1453 | static int link_check_initialized(Link *link) { |
| 51517f9e | 1454 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
| 5a937ea2 | 1455 | int r; |
| 505f8da7 | 1456 | |
| 0d411b7f | 1457 | assert(link); |
| 505f8da7 | 1458 | |
| 82f52245 | 1459 | if (!udev_available()) |
| 0d411b7f | 1460 | return link_initialized_and_synced(link); |
| 852a3916 YW |
1461 | |
| 1462 | /* udev should be around */ | |
| 0ac655a6 | 1463 | r = sd_device_new_from_ifindex(&device, link->ifindex); |
| 852a3916 YW |
1464 | if (r < 0) { |
| 1465 | log_link_debug_errno(link, r, "Could not find device, waiting for device initialization: %m"); | |
| 1466 | return 0; | |
| 1467 | } | |
| 1468 | ||
| 1469 | r = sd_device_get_is_initialized(device); | |
| 0d411b7f YW |
1470 | if (r < 0) |
| 1471 | return log_link_warning_errno(link, r, "Could not determine whether the device is initialized: %m"); | |
| 852a3916 YW |
1472 | if (r == 0) { |
| 1473 | /* not yet ready */ | |
| 1474 | log_link_debug(link, "link pending udev initialization..."); | |
| 1475 | return 0; | |
| 1476 | } | |
| 1477 | ||
| 1478 | r = device_is_renaming(device); | |
| 0d411b7f YW |
1479 | if (r < 0) |
| 1480 | return log_link_warning_errno(link, r, "Failed to determine the device is being renamed: %m"); | |
| 852a3916 YW |
1481 | if (r > 0) { |
| 1482 | log_link_debug(link, "Interface is being renamed, pending initialization."); | |
| 1483 | return 0; | |
| 4f561e8e | 1484 | } |
| 505f8da7 | 1485 | |
| 0d411b7f | 1486 | return link_initialized(link, device); |
| a748b692 TG |
1487 | } |
| 1488 | ||
| 3be9d62a YW |
1489 | int manager_udev_process_link(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
| 1490 | sd_device_action_t action; | |
| 1491 | Manager *m = userdata; | |
| 1492 | Link *link = NULL; | |
| 1493 | int r, ifindex; | |
| 1494 | ||
| 1495 | assert(m); | |
| 1496 | assert(device); | |
| 1497 | ||
| 1498 | r = sd_device_get_action(device, &action); | |
| 1499 | if (r < 0) { | |
| 1500 | log_device_debug_errno(device, r, "Failed to get udev action, ignoring device: %m"); | |
| 1501 | return 0; | |
| 1502 | } | |
| 1503 | ||
| 1504 | /* Ignore the "remove" uevent — let's remove a device only if rtnetlink says so. All other uevents | |
| 1505 | * are "positive" events in some form, i.e. inform us about a changed or new network interface, that | |
| 1506 | * still exists — and we are interested in that. */ | |
| 1507 | if (action == SD_DEVICE_REMOVE) | |
| 1508 | return 0; | |
| 1509 | ||
| 1510 | r = sd_device_get_ifindex(device, &ifindex); | |
| 1511 | if (r < 0) { | |
| 1512 | log_device_debug_errno(device, r, "Ignoring udev %s event for device without ifindex or with invalid ifindex: %m", | |
| 1513 | device_action_to_string(action)); | |
| 1514 | return 0; | |
| 1515 | } | |
| 1516 | ||
| 1517 | r = device_is_renaming(device); | |
| 1518 | if (r < 0) { | |
| 4b9a8c2b | 1519 | log_device_debug_errno(device, r, "Failed to determine the device is renamed or not, ignoring '%s' uevent: %m", |
| 3be9d62a YW |
1520 | device_action_to_string(action)); |
| 1521 | return 0; | |
| 1522 | } | |
| 1523 | if (r > 0) { | |
| 1524 | log_device_debug(device, "Interface is under renaming, wait for the interface to be renamed."); | |
| 1525 | return 0; | |
| 1526 | } | |
| 1527 | ||
| 6eab614d | 1528 | r = link_get_by_index(m, ifindex, &link); |
| 3be9d62a | 1529 | if (r < 0) { |
| 4b9a8c2b | 1530 | log_device_debug_errno(device, r, "Failed to get link from ifindex %i, ignoring: %m", ifindex); |
| 3be9d62a YW |
1531 | return 0; |
| 1532 | } | |
| 1533 | ||
| 4b9a8c2b YW |
1534 | r = link_initialized(link, device); |
| 1535 | if (r < 0) | |
| 1536 | link_enter_failed(link); | |
| 3be9d62a YW |
1537 | |
| 1538 | return 0; | |
| 1539 | } | |
| 1540 | ||
| 9c0a72f9 | 1541 | static int link_carrier_gained(Link *link) { |
| 6706ce2f | 1542 | bool force_reconfigure; |
| 9c0a72f9 TG |
1543 | int r; |
| 1544 | ||
| 1545 | assert(link); | |
| 1546 | ||
| 6706ce2f YW |
1547 | r = event_source_disable(link->carrier_lost_timer); |
| 1548 | if (r < 0) | |
| 1549 | log_link_warning_errno(link, r, "Failed to disable carrier lost timer, ignoring: %m"); | |
| 1550 | ||
| d9910948 YW |
1551 | /* If a wireless interface was connected to an access point, and the SSID is changed (that is, |
| 1552 | * both previous_ssid and ssid are non-NULL), then the connected wireless network could be | |
| 1553 | * changed. So, always reconfigure the link. Which means e.g. the DHCP client will be | |
| 1554 | * restarted, and the correct network information will be gained. | |
| 1555 | * | |
| 1556 | * However, do not reconfigure the wireless interface forcibly if it was not connected to any | |
| 1557 | * access points previously (previous_ssid is NULL in this case). As, a .network file may be | |
| 1558 | * already assigned to the interface (in that case, the .network file does not have the SSID= | |
| 1559 | * setting in the [Match] section), and the interface is already being configured. Of course, | |
| 1560 | * there may exist another .network file with higher priority and a matching SSID= setting. But | |
| 1561 | * in that case, link_reconfigure_impl() can handle that without the force_reconfigure flag. | |
| 1562 | * | |
| 6706ce2f | 1563 | * For non-wireless interfaces, we have no way to detect the connected network change. So, |
| d9910948 YW |
1564 | * setting force_reconfigure = false. Note, both ssid and previous_ssid are NULL in that case. */ |
| 1565 | force_reconfigure = link->previous_ssid && !streq_ptr(link->previous_ssid, link->ssid); | |
| 6706ce2f YW |
1566 | link->previous_ssid = mfree(link->previous_ssid); |
| 1567 | ||
| a72d2a7b | 1568 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_FAILED, LINK_STATE_LINGER)) { |
| b7ac1284 YW |
1569 | /* At this stage, both wlan and link information should be up-to-date. Hence, |
| 1570 | * it is not necessary to call RTM_GETLINK, NL80211_CMD_GET_INTERFACE, or | |
| 1571 | * NL80211_CMD_GET_STATION commands, and simply call link_reconfigure_impl(). | |
| 1572 | * Note, link_reconfigure_impl() returns 1 when the link is reconfigured. */ | |
| 6706ce2f | 1573 | r = link_reconfigure_impl(link, force_reconfigure); |
| b7ac1284 YW |
1574 | if (r != 0) |
| 1575 | return r; | |
| 1576 | } | |
| 1577 | ||
| aa9117c0 YW |
1578 | r = link_handle_bound_by_list(link); |
| 1579 | if (r < 0) | |
| 1580 | return r; | |
| 1581 | ||
| 600b7898 YW |
1582 | if (link->iftype == ARPHRD_CAN) |
| 1583 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
| aa9117c0 | 1584 | return 0; |
| 600b7898 | 1585 | |
| b9ea3d2e | 1586 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
| 8566df79 | 1587 | r = link_acquire_dynamic_conf(link); |
| f0269653 | 1588 | if (r < 0) |
| 9c0a72f9 | 1589 | return r; |
| 6fc25497 | 1590 | |
| 97108953 | 1591 | r = link_request_static_configs(link); |
| 6fc25497 SS |
1592 | if (r < 0) |
| 1593 | return r; | |
| 9c0a72f9 TG |
1594 | } |
| 1595 | ||
| aa9117c0 | 1596 | return 0; |
| 9c0a72f9 TG |
1597 | } |
| 1598 | ||
| 6706ce2f YW |
1599 | static int link_carrier_lost_impl(Link *link) { |
| 1600 | int r, ret = 0; | |
| 1601 | ||
| 1602 | assert(link); | |
| 1603 | ||
| 1604 | link->previous_ssid = mfree(link->previous_ssid); | |
| 1605 | ||
| 1606 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
| 1607 | return 0; | |
| 1608 | ||
| 1609 | if (!link->network) | |
| 1610 | return 0; | |
| 1611 | ||
| 1612 | r = link_stop_engines(link, false); | |
| 1613 | if (r < 0) | |
| 1614 | ret = r; | |
| 1615 | ||
| a0e99a37 | 1616 | r = link_drop_managed_config(link); |
| 6706ce2f YW |
1617 | if (r < 0 && ret >= 0) |
| 1618 | ret = r; | |
| 1619 | ||
| 1620 | return ret; | |
| 1621 | } | |
| 1622 | ||
| 1623 | static int link_carrier_lost_handler(sd_event_source *s, uint64_t usec, void *userdata) { | |
| 1624 | Link *link = userdata; | |
| 1625 | int r; | |
| 1626 | ||
| 1627 | assert(link); | |
| 1628 | ||
| 1629 | r = link_carrier_lost_impl(link); | |
| 1630 | if (r < 0) { | |
| 1631 | log_link_warning_errno(link, r, "Failed to process carrier lost event: %m"); | |
| 1632 | link_enter_failed(link); | |
| 1633 | } | |
| 1634 | ||
| 1635 | return 0; | |
| 1636 | } | |
| 1637 | ||
| 9c0a72f9 TG |
1638 | static int link_carrier_lost(Link *link) { |
| 1639 | int r; | |
| 1640 | ||
| 1641 | assert(link); | |
| 1642 | ||
| aa9117c0 YW |
1643 | r = link_handle_bound_by_list(link); |
| 1644 | if (r < 0) | |
| 1645 | return r; | |
| 93b4dab5 | 1646 | |
| 600b7898 YW |
1647 | if (link->iftype == ARPHRD_CAN) |
| 1648 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
| aa9117c0 YW |
1649 | return 0; |
| 1650 | ||
| f1c22cf4 YW |
1651 | if (!link->network) |
| 1652 | return 0; | |
| 1653 | ||
| 6706ce2f | 1654 | if (link->network->ignore_carrier_loss_usec == USEC_INFINITY) |
| aa9117c0 | 1655 | return 0; |
| 600b7898 | 1656 | |
| 6706ce2f YW |
1657 | if (link->network->ignore_carrier_loss_usec == 0) |
| 1658 | return link_carrier_lost_impl(link); | |
| 1659 | ||
| 1660 | return event_reset_time_relative(link->manager->event, | |
| 1661 | &link->carrier_lost_timer, | |
| ba4e0427 | 1662 | CLOCK_BOOTTIME, |
| 6706ce2f YW |
1663 | link->network->ignore_carrier_loss_usec, |
| 1664 | 0, | |
| 1665 | link_carrier_lost_handler, | |
| 1666 | link, | |
| 1667 | 0, | |
| 1668 | "link-carrier-loss", | |
| 1669 | true); | |
| 0c9ee5d5 YW |
1670 | } |
| 1671 | ||
| 0c9ee5d5 YW |
1672 | static int link_admin_state_up(Link *link) { |
| 1673 | int r; | |
| 1674 | ||
| 1675 | assert(link); | |
| 1676 | ||
| 1677 | /* This is called every time an interface admin state changes to up; | |
| 1678 | * specifically, when IFF_UP flag changes from unset to set. */ | |
| 1679 | ||
| 1680 | if (!link->network) | |
| 1681 | return 0; | |
| 1682 | ||
| 899b0e5e | 1683 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_DOWN) { |
| 1a054a20 | 1684 | log_link_info(link, "Activation policy is \"always-down\", forcing link down."); |
| 712fd5d2 | 1685 | return link_request_to_bring_up_or_down(link, /* up = */ false); |
| 0c9ee5d5 YW |
1686 | } |
| 1687 | ||
| 1688 | /* We set the ipv6 mtu after the device mtu, but the kernel resets | |
| 1689 | * ipv6 mtu on NETDEV_UP, so we need to reset it. */ | |
| 1690 | r = link_set_ipv6_mtu(link); | |
| 1691 | if (r < 0) | |
| 1692 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU, ignoring: %m"); | |
| 1693 | ||
| 1694 | return 0; | |
| 1695 | } | |
| 1696 | ||
| 1697 | static int link_admin_state_down(Link *link) { | |
| 1698 | assert(link); | |
| 1699 | ||
| 1700 | if (!link->network) | |
| 1701 | return 0; | |
| 1702 | ||
| 899b0e5e | 1703 | if (link->activated && link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_UP) { |
| 1a054a20 | 1704 | log_link_info(link, "Activation policy is \"always-up\", forcing link up."); |
| 712fd5d2 | 1705 | return link_request_to_bring_up_or_down(link, /* up = */ true); |
| 0c9ee5d5 YW |
1706 | } |
| 1707 | ||
| 1708 | return 0; | |
| 1709 | } | |
| 1710 | ||
| 0c9ee5d5 YW |
1711 | static bool link_is_enslaved(Link *link) { |
| 1712 | if (link->flags & IFF_SLAVE) | |
| 0c9ee5d5 YW |
1713 | return true; |
| 1714 | ||
| 1f024462 | 1715 | if (link->master_ifindex > 0) |
| 0c9ee5d5 YW |
1716 | return true; |
| 1717 | ||
| 0c9ee5d5 YW |
1718 | return false; |
| 1719 | } | |
| 1720 | ||
| 1721 | static LinkAddressState address_state_from_scope(uint8_t scope) { | |
| 1722 | if (scope < RT_SCOPE_SITE) | |
| 1723 | /* universally accessible addresses found */ | |
| 1724 | return LINK_ADDRESS_STATE_ROUTABLE; | |
| 1725 | ||
| 1726 | if (scope < RT_SCOPE_HOST) | |
| 1727 | /* only link or site local addresses found */ | |
| 1728 | return LINK_ADDRESS_STATE_DEGRADED; | |
| 1729 | ||
| 1730 | /* no useful addresses found */ | |
| 1731 | return LINK_ADDRESS_STATE_OFF; | |
| 1732 | } | |
| 1733 | ||
| 1734 | void link_update_operstate(Link *link, bool also_update_master) { | |
| 1735 | LinkOperationalState operstate; | |
| 1736 | LinkCarrierState carrier_state; | |
| 1737 | LinkAddressState ipv4_address_state, ipv6_address_state, address_state; | |
| 1738 | LinkOnlineState online_state; | |
| 1739 | _cleanup_strv_free_ char **p = NULL; | |
| 1740 | uint8_t ipv4_scope = RT_SCOPE_NOWHERE, ipv6_scope = RT_SCOPE_NOWHERE; | |
| 1741 | bool changed = false; | |
| 1742 | Address *address; | |
| 1743 | ||
| 1744 | assert(link); | |
| 1745 | ||
| 1746 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
| 1747 | carrier_state = LINK_CARRIER_STATE_DORMANT; | |
| 1748 | else if (link_has_carrier(link)) { | |
| 1749 | if (link_is_enslaved(link)) | |
| 1750 | carrier_state = LINK_CARRIER_STATE_ENSLAVED; | |
| 1751 | else | |
| 1752 | carrier_state = LINK_CARRIER_STATE_CARRIER; | |
| 1753 | } else if (link->flags & IFF_UP) | |
| 1754 | carrier_state = LINK_CARRIER_STATE_NO_CARRIER; | |
| 1755 | else | |
| 1756 | carrier_state = LINK_CARRIER_STATE_OFF; | |
| 1757 | ||
| 1758 | if (carrier_state >= LINK_CARRIER_STATE_CARRIER) { | |
| 1759 | Link *slave; | |
| 1760 | ||
| 1761 | SET_FOREACH(slave, link->slaves) { | |
| 1762 | link_update_operstate(slave, false); | |
| 1763 | ||
| 1764 | if (slave->carrier_state < LINK_CARRIER_STATE_CARRIER) | |
| 1765 | carrier_state = LINK_CARRIER_STATE_DEGRADED_CARRIER; | |
| 1766 | } | |
| 1767 | } | |
| 1768 | ||
| 1769 | SET_FOREACH(address, link->addresses) { | |
| 1770 | if (!address_is_ready(address)) | |
| 1771 | continue; | |
| 1772 | ||
| 1773 | if (address->family == AF_INET) | |
| 1774 | ipv4_scope = MIN(ipv4_scope, address->scope); | |
| 1775 | ||
| 1776 | if (address->family == AF_INET6) | |
| 1777 | ipv6_scope = MIN(ipv6_scope, address->scope); | |
| 1778 | } | |
| 1779 | ||
| 0c9ee5d5 YW |
1780 | ipv4_address_state = address_state_from_scope(ipv4_scope); |
| 1781 | ipv6_address_state = address_state_from_scope(ipv6_scope); | |
| 1782 | address_state = address_state_from_scope(MIN(ipv4_scope, ipv6_scope)); | |
| 1783 | ||
| 1784 | /* Mapping of address and carrier state vs operational state | |
| 1785 | * carrier state | |
| 1786 | * | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
| 1787 | * ------------------------------------------------------------------------------ | |
| 1788 | * off | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
| 1789 | * address_state degraded | off | no-carrier | dormant | degraded-carrier | degraded | enslaved | |
| 1790 | * routable | off | no-carrier | dormant | degraded-carrier | routable | routable | |
| 1791 | */ | |
| 1792 | ||
| 1793 | if (carrier_state < LINK_CARRIER_STATE_CARRIER || address_state == LINK_ADDRESS_STATE_OFF) | |
| 1794 | operstate = (LinkOperationalState) carrier_state; | |
| 1795 | else if (address_state == LINK_ADDRESS_STATE_ROUTABLE) | |
| 1796 | operstate = LINK_OPERSTATE_ROUTABLE; | |
| 1797 | else if (carrier_state == LINK_CARRIER_STATE_CARRIER) | |
| 1798 | operstate = LINK_OPERSTATE_DEGRADED; | |
| 1799 | else | |
| 1800 | operstate = LINK_OPERSTATE_ENSLAVED; | |
| 1801 | ||
| 1802 | /* Only determine online state for managed links with RequiredForOnline=yes */ | |
| 1803 | if (!link->network || !link->network->required_for_online) | |
| 1804 | online_state = _LINK_ONLINE_STATE_INVALID; | |
| 1805 | else if (operstate < link->network->required_operstate_for_online.min || | |
| 1806 | operstate > link->network->required_operstate_for_online.max) | |
| 1807 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
| 1808 | else { | |
| 1809 | AddressFamily required_family = link->network->required_family_for_online; | |
| 1810 | bool needs_ipv4 = required_family & ADDRESS_FAMILY_IPV4; | |
| 1811 | bool needs_ipv6 = required_family & ADDRESS_FAMILY_IPV6; | |
| 1812 | ||
| 1813 | /* The operational state is within the range required for online. | |
| 1814 | * If a particular address family is also required, we might revert | |
| 1815 | * to offline in the blocks below. */ | |
| 1816 | online_state = LINK_ONLINE_STATE_ONLINE; | |
| 1817 | ||
| 1818 | if (link->network->required_operstate_for_online.min >= LINK_OPERSTATE_DEGRADED) { | |
| 1819 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_DEGRADED) | |
| 1820 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
| 1821 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_DEGRADED) | |
| 1822 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
| 1823 | } | |
| 1824 | ||
| 1825 | if (link->network->required_operstate_for_online.min >= LINK_OPERSTATE_ROUTABLE) { | |
| 1826 | if (needs_ipv4 && ipv4_address_state < LINK_ADDRESS_STATE_ROUTABLE) | |
| 1827 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
| 1828 | if (needs_ipv6 && ipv6_address_state < LINK_ADDRESS_STATE_ROUTABLE) | |
| 1829 | online_state = LINK_ONLINE_STATE_OFFLINE; | |
| 1830 | } | |
| 1831 | } | |
| 1832 | ||
| 1833 | if (link->carrier_state != carrier_state) { | |
| 1834 | link->carrier_state = carrier_state; | |
| 1835 | changed = true; | |
| 1836 | if (strv_extend(&p, "CarrierState") < 0) | |
| 1837 | log_oom(); | |
| 1838 | } | |
| 1839 | ||
| 1840 | if (link->address_state != address_state) { | |
| 1841 | link->address_state = address_state; | |
| 1842 | changed = true; | |
| 1843 | if (strv_extend(&p, "AddressState") < 0) | |
| 1844 | log_oom(); | |
| 1845 | } | |
| 0d4ad91d | 1846 | |
| 0c9ee5d5 YW |
1847 | if (link->ipv4_address_state != ipv4_address_state) { |
| 1848 | link->ipv4_address_state = ipv4_address_state; | |
| 1849 | changed = true; | |
| 1850 | if (strv_extend(&p, "IPv4AddressState") < 0) | |
| 1851 | log_oom(); | |
| 1852 | } | |
| 9c0a72f9 | 1853 | |
| 0c9ee5d5 YW |
1854 | if (link->ipv6_address_state != ipv6_address_state) { |
| 1855 | link->ipv6_address_state = ipv6_address_state; | |
| 1856 | changed = true; | |
| 1857 | if (strv_extend(&p, "IPv6AddressState") < 0) | |
| 1858 | log_oom(); | |
| 1859 | } | |
| 9c0a72f9 | 1860 | |
| 0c9ee5d5 YW |
1861 | if (link->operstate != operstate) { |
| 1862 | link->operstate = operstate; | |
| 1863 | changed = true; | |
| 1864 | if (strv_extend(&p, "OperationalState") < 0) | |
| 1865 | log_oom(); | |
| 1866 | } | |
| 9c0a72f9 | 1867 | |
| 0c9ee5d5 YW |
1868 | if (link->online_state != online_state) { |
| 1869 | link->online_state = online_state; | |
| 1870 | changed = true; | |
| 1871 | if (strv_extend(&p, "OnlineState") < 0) | |
| 1872 | log_oom(); | |
| 1873 | } | |
| 9c0a72f9 | 1874 | |
| 0c9ee5d5 YW |
1875 | if (p) |
| 1876 | link_send_changed_strv(link, p); | |
| 1877 | if (changed) | |
| 1878 | link_dirty(link); | |
| 9c0a72f9 | 1879 | |
| 0c9ee5d5 YW |
1880 | if (also_update_master) { |
| 1881 | Link *master; | |
| 9c0a72f9 | 1882 | |
| 0c9ee5d5 YW |
1883 | if (link_get_master(link, &master) >= 0) |
| 1884 | link_update_operstate(master, true); | |
| 1885 | } | |
| 9c0a72f9 TG |
1886 | } |
| 1887 | ||
| 0c9ee5d5 YW |
1888 | #define FLAG_STRING(string, flag, old, new) \ |
| 1889 | (((old ^ new) & flag) \ | |
| 1890 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
| 1891 | : "") | |
| 1892 | ||
| 0d411b7f | 1893 | static int link_update_flags(Link *link, sd_netlink_message *message) { |
| 96f5f9ef | 1894 | bool link_was_admin_up, had_carrier; |
| 0c9ee5d5 YW |
1895 | uint8_t operstate; |
| 1896 | unsigned flags; | |
| d236718c DS |
1897 | int r; |
| 1898 | ||
| 61135582 | 1899 | assert(link); |
| 0d411b7f | 1900 | assert(message); |
| 61135582 | 1901 | |
| 0d411b7f | 1902 | r = sd_rtnl_message_link_get_flags(message, &flags); |
| 0c9ee5d5 | 1903 | if (r < 0) |
| 0d411b7f | 1904 | return log_link_debug_errno(link, r, "rtnl: failed to read link flags: %m"); |
| 3be9d62a | 1905 | |
| 0d411b7f YW |
1906 | r = sd_netlink_message_read_u8(message, IFLA_OPERSTATE, &operstate); |
| 1907 | if (r == -ENODATA) | |
| 1908 | /* If we got a message without operstate, assume the state was unchanged. */ | |
| 0c9ee5d5 | 1909 | operstate = link->kernel_operstate; |
| 0d411b7f YW |
1910 | else if (r < 0) |
| 1911 | return log_link_debug_errno(link, r, "rtnl: failed to read operational state: %m"); | |
| 0c9ee5d5 | 1912 | |
| 0d411b7f | 1913 | if (link->flags == flags && link->kernel_operstate == operstate) |
| 61135582 DS |
1914 | return 0; |
| 1915 | ||
| 0c9ee5d5 YW |
1916 | if (link->flags != flags) { |
| 1917 | unsigned unknown_flags, unknown_flags_added, unknown_flags_removed; | |
| 61135582 | 1918 | |
| 0c9ee5d5 YW |
1919 | 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", |
| 1920 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), | |
| 1921 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
| 1922 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
| 1923 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
| 1924 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
| 1925 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
| 1926 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
| 1927 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
| 1928 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
| 1929 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
| 1930 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
| 1931 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
| 1932 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
| 1933 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
| 1934 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
| 1935 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
| 1936 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
| 1937 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
| 1938 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
| d236718c | 1939 | |
| 0c9ee5d5 YW |
1940 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | |
| 1941 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
| 1942 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
| 1943 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
| 1944 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
| 1945 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
| 1946 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
| 1947 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
| d236718c | 1948 | |
| 0c9ee5d5 YW |
1949 | if (unknown_flags_added) |
| 1950 | log_link_debug(link, "Unknown link flags gained, ignoring: %#.5x", unknown_flags_added); | |
| 61135582 | 1951 | |
| 0c9ee5d5 YW |
1952 | if (unknown_flags_removed) |
| 1953 | log_link_debug(link, "Unknown link flags lost, ignoring: %#.5x", unknown_flags_removed); | |
| 1954 | } | |
| 61135582 | 1955 | |
| 0d411b7f YW |
1956 | link_was_admin_up = link->flags & IFF_UP; |
| 1957 | had_carrier = link_has_carrier(link); | |
| 1958 | ||
| 0c9ee5d5 YW |
1959 | link->flags = flags; |
| 1960 | link->kernel_operstate = operstate; | |
| 36161cba | 1961 | |
| 0c9ee5d5 | 1962 | link_update_operstate(link, true); |
| 61135582 | 1963 | |
| 0d411b7f YW |
1964 | if (!link_was_admin_up && (link->flags & IFF_UP)) { |
| 1965 | log_link_info(link, "Link UP"); | |
| 22936833 | 1966 | |
| 0d411b7f YW |
1967 | r = link_admin_state_up(link); |
| 1968 | if (r < 0) | |
| 1969 | return r; | |
| 1970 | } else if (link_was_admin_up && !(link->flags & IFF_UP)) { | |
| 1971 | log_link_info(link, "Link DOWN"); | |
| 0d4ad91d | 1972 | |
| 0d411b7f | 1973 | r = link_admin_state_down(link); |
| 0d4ad91d AR |
1974 | if (r < 0) |
| 1975 | return r; | |
| 7619683b TG |
1976 | } |
| 1977 | ||
| 0d411b7f YW |
1978 | if (!had_carrier && link_has_carrier(link)) { |
| 1979 | log_link_info(link, "Gained carrier"); | |
| 0d4ad91d | 1980 | |
| 0d411b7f | 1981 | r = link_carrier_gained(link); |
| 30de2b89 YW |
1982 | if (r < 0) |
| 1983 | return r; | |
| 0d411b7f YW |
1984 | } else if (had_carrier && !link_has_carrier(link)) { |
| 1985 | log_link_info(link, "Lost carrier"); | |
| 1986 | ||
| 1987 | r = link_carrier_lost(link); | |
| 0b54c870 YW |
1988 | if (r < 0) |
| 1989 | return r; | |
| b8941f74 TG |
1990 | } |
| 1991 | ||
| 0d411b7f YW |
1992 | return 0; |
| 1993 | } | |
| afe7fd56 | 1994 | |
| 0d411b7f YW |
1995 | static int link_update_master(Link *link, sd_netlink_message *message) { |
| 1996 | int master_ifindex, r; | |
| 7465dd22 | 1997 | |
| 0d411b7f YW |
1998 | assert(link); |
| 1999 | assert(message); | |
| 69629de9 | 2000 | |
| 0d411b7f YW |
2001 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t*) &master_ifindex); |
| 2002 | if (r == -ENODATA) | |
| 2003 | return 0; | |
| 2004 | if (r < 0) | |
| 2005 | return log_link_debug_errno(link, r, "rtnl: failed to read master ifindex: %m"); | |
| 807667f7 | 2006 | |
| 571bf1aa YW |
2007 | if (master_ifindex == link->ifindex) |
| 2008 | master_ifindex = 0; | |
| 2009 | ||
| 0d411b7f YW |
2010 | if (master_ifindex == link->master_ifindex) |
| 2011 | return 0; | |
| 807667f7 | 2012 | |
| 0d411b7f YW |
2013 | if (link->master_ifindex == 0) |
| 2014 | log_link_debug(link, "Joined to master interface: %i", master_ifindex); | |
| 2015 | else if (master_ifindex == 0) | |
| 2016 | log_link_debug(link, "Leaved from master interface: %i", link->master_ifindex); | |
| 2017 | else | |
| 2018 | log_link_debug(link, "Master interface is changed: %i → %i", link->master_ifindex, master_ifindex); | |
| 807667f7 | 2019 | |
| 0d411b7f | 2020 | link_drop_from_master(link); |
| 807667f7 | 2021 | |
| 0d411b7f | 2022 | link->master_ifindex = master_ifindex; |
| 413708d1 | 2023 | |
| 0d411b7f YW |
2024 | r = link_append_to_master(link); |
| 2025 | if (r < 0) | |
| 2026 | return log_link_debug_errno(link, r, "Failed to append link to master: %m"); | |
| 7465dd22 | 2027 | |
| 0d411b7f YW |
2028 | return 0; |
| 2029 | } | |
| 807667f7 | 2030 | |
| e1658632 YW |
2031 | static int link_update_driver(Link *link, sd_netlink_message *message) { |
| 2032 | int r; | |
| 2033 | ||
| 2034 | assert(link); | |
| 2035 | assert(link->manager); | |
| 2036 | assert(message); | |
| 2037 | ||
| 2038 | /* Driver is already read. Assuming the driver is never changed. */ | |
| 2039 | if (link->driver) | |
| 2040 | return 0; | |
| 2041 | ||
| 2042 | /* When udevd is running, read the driver after the interface is initialized by udevd. | |
| 2043 | * Otherwise, ethtool may not work correctly. See issue #22538. | |
| 2044 | * When udevd is not running, read the value when the interface is detected. */ | |
| 2045 | if (link->state != (udev_available() ? LINK_STATE_INITIALIZED : LINK_STATE_PENDING)) | |
| 2046 | return 0; | |
| 2047 | ||
| 2048 | r = ethtool_get_driver(&link->manager->ethtool_fd, link->ifname, &link->driver); | |
| 2049 | if (r < 0) { | |
| 2050 | log_link_debug_errno(link, r, "Failed to get driver, continuing without: %m"); | |
| 2051 | return 0; | |
| 2052 | } | |
| 2053 | ||
| 2054 | log_link_debug(link, "Found driver: %s", strna(link->driver)); | |
| 2055 | ||
| 2056 | if (streq_ptr(link->driver, "dsa")) { | |
| 2057 | uint32_t dsa_master_ifindex = 0; | |
| 2058 | ||
| 2059 | r = sd_netlink_message_read_u32(message, IFLA_LINK, &dsa_master_ifindex); | |
| 2060 | if (r < 0 && r != -ENODATA) | |
| 2061 | return log_link_debug_errno(link, r, "rtnl: failed to read ifindex of the DSA master interface: %m"); | |
| 2062 | ||
| 2063 | if (dsa_master_ifindex > INT_MAX) { | |
| 2064 | log_link_debug(link, "rtnl: received too large DSA master ifindex (%"PRIu32" > INT_MAX), ignoring.", | |
| 2065 | dsa_master_ifindex); | |
| 2066 | dsa_master_ifindex = 0; | |
| 2067 | } | |
| 2068 | ||
| 2069 | link->dsa_master_ifindex = (int) dsa_master_ifindex; | |
| 2070 | } | |
| 2071 | ||
| 2072 | return 0; | |
| 2073 | } | |
| 2074 | ||
| 2075 | static int link_update_permanent_hardware_address(Link *link, sd_netlink_message *message) { | |
| 2076 | int r; | |
| 2077 | ||
| 2078 | assert(link); | |
| 2079 | assert(link->manager); | |
| 2080 | assert(message); | |
| 2081 | ||
| 2082 | if (link->permanent_hw_addr.length > 0) | |
| 2083 | return 0; | |
| 2084 | ||
| 2085 | /* When udevd is running, read the permanent hardware address after the interface is | |
| 2086 | * initialized by udevd. Otherwise, ethtool may not work correctly. See issue #22538. | |
| 2087 | * When udevd is not running, read the value when the interface is detected. */ | |
| 2088 | if (link->state != (udev_available() ? LINK_STATE_INITIALIZED : LINK_STATE_PENDING)) | |
| 2089 | return 0; | |
| 2090 | ||
| 2091 | r = netlink_message_read_hw_addr(message, IFLA_PERM_ADDRESS, &link->permanent_hw_addr); | |
| 2092 | if (r < 0) { | |
| 2093 | if (r != -ENODATA) | |
| 2094 | return log_link_debug_errno(link, r, "Failed to read IFLA_PERM_ADDRESS attribute: %m"); | |
| 2095 | ||
| 2096 | if (netlink_message_read_hw_addr(message, IFLA_ADDRESS, NULL) >= 0) { | |
| 2097 | /* Fallback to ethtool, if the link has a hardware address. */ | |
| 2098 | r = ethtool_get_permanent_hw_addr(&link->manager->ethtool_fd, link->ifname, &link->permanent_hw_addr); | |
| 2099 | if (r < 0) | |
| 2100 | log_link_debug_errno(link, r, "Permanent hardware address not found, continuing without: %m"); | |
| 2101 | } | |
| 2102 | } | |
| 2103 | ||
| 2104 | if (link->permanent_hw_addr.length > 0) | |
| 2105 | log_link_debug(link, "Saved permanent hardware address: %s", HW_ADDR_TO_STR(&link->permanent_hw_addr)); | |
| 2106 | ||
| 2107 | return 0; | |
| 2108 | } | |
| 2109 | ||
| 0d411b7f | 2110 | static int link_update_hardware_address(Link *link, sd_netlink_message *message) { |
| e2bacccd | 2111 | struct hw_addr_data addr; |
| 0d411b7f | 2112 | int r; |
| d93d655c | 2113 | |
| 0d411b7f YW |
2114 | assert(link); |
| 2115 | assert(message); | |
| dfc58b47 | 2116 | |
| 0d411b7f YW |
2117 | r = netlink_message_read_hw_addr(message, IFLA_BROADCAST, &link->bcast_addr); |
| 2118 | if (r < 0 && r != -ENODATA) | |
| 2119 | return log_link_debug_errno(link, r, "rtnl: failed to read broadcast address: %m"); | |
| 4f882b2a | 2120 | |
| e2bacccd | 2121 | r = netlink_message_read_hw_addr(message, IFLA_ADDRESS, &addr); |
| 0d411b7f YW |
2122 | if (r == -ENODATA) |
| 2123 | return 0; | |
| 2124 | if (r < 0) | |
| fe321d45 | 2125 | return log_link_debug_errno(link, r, "rtnl: failed to read hardware address: %m"); |
| bb262ef0 | 2126 | |
| e2bacccd | 2127 | if (hw_addr_equal(&link->hw_addr, &addr)) |
| 0d411b7f | 2128 | return 0; |
| a61bb41c | 2129 | |
| de0f1579 | 2130 | if (link->hw_addr.length == 0) |
| e2bacccd | 2131 | log_link_debug(link, "Saved hardware address: %s", HW_ADDR_TO_STR(&addr)); |
| fe321d45 YW |
2132 | else { |
| 2133 | log_link_debug(link, "Hardware address is changed: %s → %s", | |
| e2bacccd | 2134 | HW_ADDR_TO_STR(&link->hw_addr), HW_ADDR_TO_STR(&addr)); |
| 0d411b7f | 2135 | |
| e74f1d07 | 2136 | hashmap_remove_value(link->manager->links_by_hw_addr, &link->hw_addr, link); |
| fe321d45 YW |
2137 | } |
| 2138 | ||
| e2bacccd YW |
2139 | link->hw_addr = addr; |
| 2140 | ||
| fe321d45 YW |
2141 | if (!hw_addr_is_null(&link->hw_addr)) { |
| 2142 | r = hashmap_ensure_put(&link->manager->links_by_hw_addr, &hw_addr_hash_ops, &link->hw_addr, link); | |
| 2143 | if (r == -EEXIST && streq_ptr(link->kind, "bond")) | |
| 2144 | /* bonding master and its slaves have the same hardware address. */ | |
| 2145 | r = hashmap_replace(link->manager->links_by_hw_addr, &link->hw_addr, link); | |
| 2146 | if (r < 0) | |
| 2147 | log_link_debug_errno(link, r, "Failed to manage link by its new hardware address, ignoring: %m"); | |
| 2148 | } | |
| 0d411b7f | 2149 | |
| 76a86ffd YW |
2150 | r = ipv4ll_update_mac(link); |
| 2151 | if (r < 0) | |
| 2152 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4 ACD client: %m"); | |
| 2153 | ||
| 0d411b7f | 2154 | r = ipv4ll_update_mac(link); |
| a61bb41c | 2155 | if (r < 0) |
| 0d411b7f | 2156 | return log_link_debug_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); |
| a61bb41c | 2157 | |
| 0d411b7f YW |
2158 | r = dhcp4_update_mac(link); |
| 2159 | if (r < 0) | |
| 2160 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
| d236718c | 2161 | |
| 0d411b7f YW |
2162 | r = dhcp6_update_mac(link); |
| 2163 | if (r < 0) | |
| 2164 | return log_link_debug_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
| 2165 | ||
| 2166 | r = radv_update_mac(link); | |
| 2167 | if (r < 0) | |
| 2168 | return log_link_debug_errno(link, r, "Could not update MAC address for Router Advertisement: %m"); | |
| 2169 | ||
| 2170 | if (link->ndisc) { | |
| ca2b7cd8 | 2171 | r = sd_ndisc_set_mac(link->ndisc, &link->hw_addr.ether); |
| d236718c | 2172 | if (r < 0) |
| 0d411b7f YW |
2173 | return log_link_debug_errno(link, r, "Could not update MAC for NDisc: %m"); |
| 2174 | } | |
| d236718c | 2175 | |
| 35778343 YW |
2176 | if (link->lldp_rx) { |
| 2177 | r = sd_lldp_rx_set_filter_address(link->lldp_rx, &link->hw_addr.ether); | |
| 61135582 | 2178 | if (r < 0) |
| c01b9b87 YW |
2179 | return log_link_debug_errno(link, r, "Could not update MAC address for LLDP Rx: %m"); |
| 2180 | } | |
| 2181 | ||
| 2182 | if (link->lldp_tx) { | |
| 2183 | r = sd_lldp_tx_set_hwaddr(link->lldp_tx, &link->hw_addr.ether); | |
| 2184 | if (r < 0) | |
| 2185 | return log_link_debug_errno(link, r, "Could not update MAC address for LLDP Tx: %m"); | |
| 61135582 DS |
2186 | } |
| 2187 | ||
| 0d411b7f YW |
2188 | return 0; |
| 2189 | } | |
| a61bb41c | 2190 | |
| 0d411b7f | 2191 | static int link_update_mtu(Link *link, sd_netlink_message *message) { |
| 717ba5fc | 2192 | uint32_t mtu, min_mtu = 0, max_mtu = UINT32_MAX; |
| 0d411b7f | 2193 | int r; |
| a61bb41c | 2194 | |
| 0d411b7f YW |
2195 | assert(link); |
| 2196 | assert(message); | |
| 2197 | ||
| 2198 | r = sd_netlink_message_read_u32(message, IFLA_MTU, &mtu); | |
| 2199 | if (r == -ENODATA) | |
| 2200 | return 0; | |
| 2201 | if (r < 0) | |
| 2202 | return log_link_debug_errno(link, r, "rtnl: failed to read MTU in RTM_NEWLINK message: %m"); | |
| b5d0fd1e YW |
2203 | if (mtu == 0) |
| 2204 | return 0; | |
| 0d411b7f | 2205 | |
| 717ba5fc YW |
2206 | r = sd_netlink_message_read_u32(message, IFLA_MIN_MTU, &min_mtu); |
| 2207 | if (r < 0 && r != -ENODATA) | |
| 2208 | return log_link_debug_errno(link, r, "rtnl: failed to read minimum MTU in RTM_NEWLINK message: %m"); | |
| 2209 | ||
| 2210 | r = sd_netlink_message_read_u32(message, IFLA_MAX_MTU, &max_mtu); | |
| 2211 | if (r < 0 && r != -ENODATA) | |
| 2212 | return log_link_debug_errno(link, r, "rtnl: failed to read maximum MTU in RTM_NEWLINK message: %m"); | |
| 2213 | ||
| 717ba5fc YW |
2214 | if (max_mtu == 0) |
| 2215 | max_mtu = UINT32_MAX; | |
| 2216 | ||
| 2217 | link->min_mtu = min_mtu; | |
| 2218 | link->max_mtu = max_mtu; | |
| 2219 | ||
| 0d411b7f YW |
2220 | if (link->original_mtu == 0) { |
| 2221 | link->original_mtu = mtu; | |
| 717ba5fc YW |
2222 | log_link_debug(link, "Saved original MTU %" PRIu32" (min: %"PRIu32", max: %"PRIu32")", |
| 2223 | link->original_mtu, link->min_mtu, link->max_mtu); | |
| 0d411b7f YW |
2224 | } |
| 2225 | ||
| 717ba5fc YW |
2226 | if (link->mtu == mtu) |
| 2227 | return 0; | |
| 2228 | ||
| b5d0fd1e YW |
2229 | if (link->mtu != 0) |
| 2230 | log_link_debug(link, "MTU is changed: %"PRIu32" → %"PRIu32" (min: %"PRIu32", max: %"PRIu32")", | |
| 2231 | link->mtu, mtu, link->min_mtu, link->max_mtu); | |
| 0d411b7f YW |
2232 | |
| 2233 | link->mtu = mtu; | |
| 2234 | ||
| 2235 | if (link->dhcp_client) { | |
| 2236 | r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu); | |
| 9c0a72f9 | 2237 | if (r < 0) |
| 0d411b7f YW |
2238 | return log_link_debug_errno(link, r, "Could not update MTU in DHCP client: %m"); |
| 2239 | } | |
| a61bb41c | 2240 | |
| 0d411b7f YW |
2241 | if (link->radv) { |
| 2242 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
| 9c0a72f9 | 2243 | if (r < 0) |
| 0d411b7f | 2244 | return log_link_debug_errno(link, r, "Could not set MTU for Router Advertisement: %m"); |
| a61bb41c TG |
2245 | } |
| 2246 | ||
| 2247 | return 0; | |
| dd3efc09 | 2248 | } |
| fe8db0c5 | 2249 | |
| 0d411b7f YW |
2250 | static int link_update_alternative_names(Link *link, sd_netlink_message *message) { |
| 2251 | _cleanup_strv_free_ char **altnames = NULL; | |
| 0d411b7f YW |
2252 | int r; |
| 2253 | ||
| 2254 | assert(link); | |
| 2255 | assert(message); | |
| 2256 | ||
| 2257 | r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &altnames); | |
| 50df02a7 YW |
2258 | if (r == -ENODATA) |
| 2259 | /* The message does not have IFLA_PROP_LIST container attribute. It does not means the | |
| 2260 | * interface has no alternative name. */ | |
| 2261 | return 0; | |
| 2262 | if (r < 0) | |
| 0d411b7f YW |
2263 | return log_link_debug_errno(link, r, "rtnl: failed to read alternative names: %m"); |
| 2264 | ||
| 1b345c1e YW |
2265 | if (strv_equal(altnames, link->alternative_names)) |
| 2266 | return 0; | |
| 2267 | ||
| 0d411b7f YW |
2268 | STRV_FOREACH(n, link->alternative_names) |
| 2269 | hashmap_remove(link->manager->links_by_name, *n); | |
| 2270 | ||
| 2271 | strv_free_and_replace(link->alternative_names, altnames); | |
| 2272 | ||
| 2273 | STRV_FOREACH(n, link->alternative_names) { | |
| 2274 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, *n, link); | |
| 2275 | if (r < 0) | |
| 2276 | return log_link_debug_errno(link, r, "Failed to manage link by its new alternative names: %m"); | |
| 2277 | } | |
| 2278 | ||
| 2279 | return 0; | |
| 2280 | } | |
| 2281 | ||
| 2282 | static int link_update_name(Link *link, sd_netlink_message *message) { | |
| 01afd0f7 | 2283 | char ifname_from_index[IF_NAMESIZE]; |
| 0d411b7f YW |
2284 | const char *ifname; |
| 2285 | int r; | |
| 2286 | ||
| 2287 | assert(link); | |
| 2288 | assert(message); | |
| 2289 | ||
| 2290 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); | |
| 2291 | if (r == -ENODATA) | |
| 7802194a | 2292 | /* Hmm?? But ok. */ |
| 0d411b7f YW |
2293 | return 0; |
| 2294 | if (r < 0) | |
| 2295 | return log_link_debug_errno(link, r, "Failed to read interface name in RTM_NEWLINK message: %m"); | |
| 2296 | ||
| 2297 | if (streq(ifname, link->ifname)) | |
| 2298 | return 0; | |
| 2299 | ||
| 01afd0f7 YW |
2300 | r = format_ifname(link->ifindex, ifname_from_index); |
| 2301 | if (r < 0) | |
| 2302 | return log_link_debug_errno(link, r, "Could not get interface name for index %i.", link->ifindex); | |
| 176b8be1 YW |
2303 | |
| 2304 | if (!streq(ifname, ifname_from_index)) { | |
| 2305 | log_link_debug(link, "New interface name '%s' received from the kernel does not correspond " | |
| 2306 | "with the name currently configured on the actual interface '%s'. Ignoring.", | |
| 2307 | ifname, ifname_from_index); | |
| 2308 | return 0; | |
| 2309 | } | |
| 2310 | ||
| 0d411b7f YW |
2311 | log_link_info(link, "Interface name change detected, renamed to %s.", ifname); |
| 2312 | ||
| 2313 | hashmap_remove(link->manager->links_by_name, link->ifname); | |
| 2314 | ||
| 2315 | r = free_and_strdup(&link->ifname, ifname); | |
| 2316 | if (r < 0) | |
| 2317 | return log_oom_debug(); | |
| 2318 | ||
| 2319 | r = hashmap_ensure_put(&link->manager->links_by_name, &string_hash_ops, link->ifname, link); | |
| 2320 | if (r < 0) | |
| 2321 | return log_link_debug_errno(link, r, "Failed to manage link by its new name: %m"); | |
| 2322 | ||
| 54d1fdb2 YW |
2323 | if (link->dhcp_client) { |
| 2324 | r = sd_dhcp_client_set_ifname(link->dhcp_client, link->ifname); | |
| 2325 | if (r < 0) | |
| 2326 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP client: %m"); | |
| 2327 | } | |
| 2328 | ||
| 2329 | if (link->dhcp6_client) { | |
| 2330 | r = sd_dhcp6_client_set_ifname(link->dhcp6_client, link->ifname); | |
| 2331 | if (r < 0) | |
| 2332 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP6 client: %m"); | |
| 2333 | } | |
| 2334 | ||
| 2335 | if (link->ndisc) { | |
| 2336 | r = sd_ndisc_set_ifname(link->ndisc, link->ifname); | |
| 2337 | if (r < 0) | |
| 2338 | return log_link_debug_errno(link, r, "Failed to update interface name in NDisc: %m"); | |
| 2339 | } | |
| 2340 | ||
| 2341 | if (link->dhcp_server) { | |
| 2342 | r = sd_dhcp_server_set_ifname(link->dhcp_server, link->ifname); | |
| 2343 | if (r < 0) | |
| 2344 | return log_link_debug_errno(link, r, "Failed to update interface name in DHCP server: %m"); | |
| 2345 | } | |
| 2346 | ||
| 2347 | if (link->radv) { | |
| 2348 | r = sd_radv_set_ifname(link->radv, link->ifname); | |
| 2349 | if (r < 0) | |
| 2350 | return log_link_debug_errno(link, r, "Failed to update interface name in Router Advertisement: %m"); | |
| 2351 | } | |
| 2352 | ||
| 35778343 YW |
2353 | if (link->lldp_rx) { |
| 2354 | r = sd_lldp_rx_set_ifname(link->lldp_rx, link->ifname); | |
| 54d1fdb2 | 2355 | if (r < 0) |
| c01b9b87 YW |
2356 | return log_link_debug_errno(link, r, "Failed to update interface name in LLDP Rx: %m"); |
| 2357 | } | |
| 2358 | ||
| 2359 | if (link->lldp_tx) { | |
| 2360 | r = sd_lldp_tx_set_ifname(link->lldp_tx, link->ifname); | |
| 2361 | if (r < 0) | |
| 2362 | return log_link_debug_errno(link, r, "Failed to update interface name in LLDP Tx: %m"); | |
| 54d1fdb2 YW |
2363 | } |
| 2364 | ||
| 2365 | if (link->ipv4ll) { | |
| 2366 | r = sd_ipv4ll_set_ifname(link->ipv4ll, link->ifname); | |
| 2367 | if (r < 0) | |
| 2368 | return log_link_debug_errno(link, r, "Failed to update interface name in IPv4LL client: %m"); | |
| 2369 | } | |
| 2370 | ||
| 86173383 YW |
2371 | r = ipv4acd_set_ifname(link); |
| 2372 | if (r < 0) | |
| 2373 | return log_link_debug_errno(link, r, "Failed to update interface name in IPv4ACD client: %m"); | |
| 54d1fdb2 | 2374 | |
| 0d411b7f YW |
2375 | return 0; |
| 2376 | } | |
| 2377 | ||
| 2378 | static int link_update(Link *link, sd_netlink_message *message) { | |
| 2379 | int r; | |
| 2380 | ||
| 2381 | assert(link); | |
| 2382 | assert(message); | |
| 2383 | ||
| 2384 | r = link_update_name(link, message); | |
| 2385 | if (r < 0) | |
| 2386 | return r; | |
| 2387 | ||
| 2388 | r = link_update_alternative_names(link, message); | |
| 2389 | if (r < 0) | |
| 2390 | return r; | |
| 2391 | ||
| 2392 | r = link_update_mtu(link, message); | |
| 2393 | if (r < 0) | |
| 2394 | return r; | |
| 2395 | ||
| e1658632 YW |
2396 | r = link_update_driver(link, message); |
| 2397 | if (r < 0) | |
| 2398 | return r; | |
| 2399 | ||
| 2400 | r = link_update_permanent_hardware_address(link, message); | |
| 2401 | if (r < 0) | |
| 2402 | return r; | |
| 2403 | ||
| 0d411b7f YW |
2404 | r = link_update_hardware_address(link, message); |
| 2405 | if (r < 0) | |
| 2406 | return r; | |
| 2407 | ||
| 2408 | r = link_update_master(link, message); | |
| 2409 | if (r < 0) | |
| 2410 | return r; | |
| 2411 | ||
| 7d0d832d YW |
2412 | r = link_update_ipv6ll_addrgen_mode(link, message); |
| 2413 | if (r < 0) | |
| 2414 | return r; | |
| 2415 | ||
| 0d411b7f YW |
2416 | return link_update_flags(link, message); |
| 2417 | } | |
| 2418 | ||
| 0c9ee5d5 YW |
2419 | static Link *link_drop_or_unref(Link *link) { |
| 2420 | if (!link) | |
| 2421 | return NULL; | |
| 2422 | if (!link->manager) | |
| 2423 | return link_unref(link); | |
| 2424 | return link_drop(link); | |
| 2425 | } | |
| 2426 | ||
| 2427 | DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_drop_or_unref); | |
| 2428 | ||
| 2429 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { | |
| 0d411b7f | 2430 | _cleanup_free_ char *ifname = NULL, *kind = NULL, *state_file = NULL, *lease_file = NULL, *lldp_file = NULL; |
| 0c9ee5d5 | 2431 | _cleanup_(link_drop_or_unrefp) Link *link = NULL; |
| 0c9ee5d5 YW |
2432 | unsigned short iftype; |
| 2433 | int r, ifindex; | |
| 0c9ee5d5 YW |
2434 | |
| 2435 | assert(manager); | |
| 2436 | assert(message); | |
| 2437 | assert(ret); | |
| 2438 | ||
| 0c9ee5d5 YW |
2439 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
| 2440 | if (r < 0) | |
| 0d411b7f | 2441 | return log_debug_errno(r, "rtnl: failed to read ifindex from link message: %m"); |
| 0c9ee5d5 | 2442 | else if (ifindex <= 0) |
| 0d411b7f | 2443 | return log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "rtnl: received link message without valid ifindex."); |
| 0c9ee5d5 YW |
2444 | |
| 2445 | r = sd_rtnl_message_link_get_type(message, &iftype); | |
| 2446 | if (r < 0) | |
| 0d411b7f | 2447 | return log_debug_errno(r, "rtnl: failed to read interface type from link message: %m"); |
| 0c9ee5d5 YW |
2448 | |
| 2449 | r = sd_netlink_message_read_string_strdup(message, IFLA_IFNAME, &ifname); | |
| 2450 | if (r < 0) | |
| 0d411b7f | 2451 | return log_debug_errno(r, "rtnl: failed to read interface name from link message: %m"); |
| 0c9ee5d5 YW |
2452 | |
| 2453 | /* check for link kind */ | |
| 2454 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
| 2455 | if (r >= 0) { | |
| 0d411b7f YW |
2456 | r = sd_netlink_message_read_string_strdup(message, IFLA_INFO_KIND, &kind); |
| 2457 | if (r < 0 && r != -ENODATA) | |
| 2458 | return log_debug_errno(r, "rtnl: failed to read interface kind from link message: %m"); | |
| 0c9ee5d5 YW |
2459 | r = sd_netlink_message_exit_container(message); |
| 2460 | if (r < 0) | |
| 0d411b7f | 2461 | return log_debug_errno(r, "rtnl: failed to exit IFLA_LINKINFO container: %m"); |
| 0c9ee5d5 YW |
2462 | } |
| 2463 | ||
| 4c78dc17 YW |
2464 | if (!manager->test_mode) { |
| 2465 | /* Do not update state files when running in test mode. */ | |
| 2466 | if (asprintf(&state_file, "/run/systemd/netif/links/%d", ifindex) < 0) | |
| 2467 | return log_oom_debug(); | |
| 0d411b7f | 2468 | |
| 4c78dc17 YW |
2469 | if (asprintf(&lease_file, "/run/systemd/netif/leases/%d", ifindex) < 0) |
| 2470 | return log_oom_debug(); | |
| 0d411b7f | 2471 | |
| 4c78dc17 YW |
2472 | if (asprintf(&lldp_file, "/run/systemd/netif/lldp/%d", ifindex) < 0) |
| 2473 | return log_oom_debug(); | |
| 2474 | } | |
| 0d411b7f | 2475 | |
| 0c9ee5d5 YW |
2476 | link = new(Link, 1); |
| 2477 | if (!link) | |
| 2478 | return -ENOMEM; | |
| 2479 | ||
| 2480 | *link = (Link) { | |
| 2481 | .n_ref = 1, | |
| 2482 | .state = LINK_STATE_PENDING, | |
| 2483 | .online_state = _LINK_ONLINE_STATE_INVALID, | |
| 2484 | .ifindex = ifindex, | |
| 2485 | .iftype = iftype, | |
| 2486 | .ifname = TAKE_PTR(ifname), | |
| 2487 | .kind = TAKE_PTR(kind), | |
| 2488 | ||
| 7d0d832d YW |
2489 | .ipv6ll_address_gen_mode = _IPV6_LINK_LOCAL_ADDRESS_GEN_MODE_INVALID, |
| 2490 | ||
| 0d411b7f YW |
2491 | .state_file = TAKE_PTR(state_file), |
| 2492 | .lease_file = TAKE_PTR(lease_file), | |
| 2493 | .lldp_file = TAKE_PTR(lldp_file), | |
| 2494 | ||
| 0c9ee5d5 YW |
2495 | .n_dns = UINT_MAX, |
| 2496 | .dns_default_route = -1, | |
| 2497 | .llmnr = _RESOLVE_SUPPORT_INVALID, | |
| 2498 | .mdns = _RESOLVE_SUPPORT_INVALID, | |
| 2499 | .dnssec_mode = _DNSSEC_MODE_INVALID, | |
| 2500 | .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID, | |
| 2501 | }; | |
| 2502 | ||
| 6eab614d | 2503 | r = hashmap_ensure_put(&manager->links_by_index, NULL, INT_TO_PTR(link->ifindex), link); |
| 0c9ee5d5 | 2504 | if (r < 0) |
| 0d411b7f | 2505 | return log_link_debug_errno(link, r, "Failed to store link into manager: %m"); |
| 0c9ee5d5 YW |
2506 | |
| 2507 | link->manager = manager; | |
| 2508 | ||
| 0d411b7f | 2509 | r = hashmap_ensure_put(&manager->links_by_name, &string_hash_ops, link->ifname, link); |
| 0c9ee5d5 | 2510 | if (r < 0) |
| 0d411b7f | 2511 | return log_link_debug_errno(link, r, "Failed to manage link by its interface name: %m"); |
| 0c9ee5d5 | 2512 | |
| 8a77e245 YW |
2513 | log_link_debug(link, "Saved new link: ifindex=%i, iftype=%s(%u), kind=%s", |
| 2514 | link->ifindex, strna(arphrd_to_name(link->iftype)), link->iftype, strna(link->kind)); | |
| 2515 | ||
| 0c9ee5d5 | 2516 | *ret = TAKE_PTR(link); |
| 0c9ee5d5 YW |
2517 | return 0; |
| 2518 | } | |
| 2519 | ||
| 0d411b7f | 2520 | int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *manager) { |
| 3be9d62a YW |
2521 | Link *link = NULL; |
| 2522 | NetDev *netdev = NULL; | |
| 2523 | uint16_t type; | |
| 2524 | const char *name; | |
| 2525 | int r, ifindex; | |
| 2526 | ||
| 2527 | assert(rtnl); | |
| 2528 | assert(message); | |
| 0d411b7f | 2529 | assert(manager); |
| 3be9d62a YW |
2530 | |
| 2531 | if (sd_netlink_message_is_error(message)) { | |
| 2532 | r = sd_netlink_message_get_errno(message); | |
| 2533 | if (r < 0) | |
| 2534 | log_message_warning_errno(message, r, "rtnl: Could not receive link message, ignoring"); | |
| 2535 | ||
| 2536 | return 0; | |
| 2537 | } | |
| 2538 | ||
| 2539 | r = sd_netlink_message_get_type(message, &type); | |
| 2540 | if (r < 0) { | |
| 2541 | log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m"); | |
| 2542 | return 0; | |
| 2543 | } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) { | |
| 2544 | log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type); | |
| 2545 | return 0; | |
| 2546 | } | |
| 2547 | ||
| 2548 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
| 2549 | if (r < 0) { | |
| 2550 | log_warning_errno(r, "rtnl: Could not get ifindex from link message, ignoring: %m"); | |
| 2551 | return 0; | |
| 2552 | } else if (ifindex <= 0) { | |
| 2553 | log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex); | |
| 2554 | return 0; | |
| 2555 | } | |
| 2556 | ||
| 2557 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name); | |
| 2558 | if (r < 0) { | |
| 2559 | log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m"); | |
| 2560 | return 0; | |
| 2561 | } | |
| 2562 | ||
| 6eab614d | 2563 | (void) link_get_by_index(manager, ifindex, &link); |
| 0d411b7f | 2564 | (void) netdev_get(manager, name, &netdev); |
| 3be9d62a YW |
2565 | |
| 2566 | switch (type) { | |
| 2567 | case RTM_NEWLINK: | |
| 0d411b7f YW |
2568 | if (netdev) { |
| 2569 | /* netdev exists, so make sure the ifindex matches */ | |
| 2570 | r = netdev_set_ifindex(netdev, message); | |
| 2571 | if (r < 0) { | |
| 66141164 | 2572 | log_netdev_warning_errno(netdev, r, "Could not process new link message for netdev, ignoring: %m"); |
| 0d411b7f YW |
2573 | return 0; |
| 2574 | } | |
| 2575 | } | |
| 2576 | ||
| 3be9d62a YW |
2577 | if (!link) { |
| 2578 | /* link is new, so add it */ | |
| 0d411b7f | 2579 | r = link_new(manager, message, &link); |
| 3be9d62a | 2580 | if (r < 0) { |
| 0d411b7f | 2581 | log_warning_errno(r, "Could not process new link message: %m"); |
| 3be9d62a YW |
2582 | return 0; |
| 2583 | } | |
| 3be9d62a | 2584 | |
| 0d411b7f | 2585 | r = link_update(link, message); |
| 3be9d62a | 2586 | if (r < 0) { |
| 66141164 | 2587 | log_link_warning_errno(link, r, "Could not process link message: %m"); |
| 0d411b7f | 2588 | link_enter_failed(link); |
| 3be9d62a YW |
2589 | return 0; |
| 2590 | } | |
| 3be9d62a | 2591 | |
| 0d411b7f YW |
2592 | r = link_check_initialized(link); |
| 2593 | if (r < 0) { | |
| 66141164 | 2594 | log_link_warning_errno(link, r, "Failed to check link is initialized: %m"); |
| 0d411b7f YW |
2595 | link_enter_failed(link); |
| 2596 | return 0; | |
| 2597 | } | |
| 2598 | } else { | |
| 2599 | r = link_update(link, message); | |
| 2600 | if (r < 0) { | |
| 66141164 | 2601 | log_link_warning_errno(link, r, "Could not process link message: %m"); |
| 0d411b7f YW |
2602 | link_enter_failed(link); |
| 2603 | return 0; | |
| 2604 | } | |
| 3be9d62a | 2605 | } |
| 3be9d62a YW |
2606 | break; |
| 2607 | ||
| 2608 | case RTM_DELLINK: | |
| 2609 | link_drop(link); | |
| 2610 | netdev_drop(netdev); | |
| 3be9d62a YW |
2611 | break; |
| 2612 | ||
| 2613 | default: | |
| 04499a70 | 2614 | assert_not_reached(); |
| 3be9d62a YW |
2615 | } |
| 2616 | ||
| 2617 | return 1; | |
| 2618 | } | |
| 2619 | ||
| 79c6e114 YW |
2620 | int link_getlink_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, const char *error_msg) { |
| 2621 | uint16_t message_type; | |
| 2622 | int r; | |
| 2623 | ||
| 2624 | assert(m); | |
| 2625 | assert(link); | |
| 2626 | assert(error_msg); | |
| 2627 | ||
| 2628 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
| 2629 | return 0; | |
| 2630 | ||
| 2631 | r = sd_netlink_message_get_errno(m); | |
| 2632 | if (r < 0) { | |
| 2633 | log_link_message_warning_errno(link, m, r, error_msg); | |
| 2634 | link_enter_failed(link); | |
| 2635 | return 0; | |
| 2636 | } | |
| 2637 | ||
| 2638 | r = sd_netlink_message_get_type(m, &message_type); | |
| 2639 | if (r < 0) { | |
| 2640 | log_link_debug_errno(link, r, "rtnl: failed to read link message type, ignoring: %m"); | |
| 2641 | return 0; | |
| 2642 | } | |
| 2643 | if (message_type != RTM_NEWLINK) { | |
| 2644 | log_link_debug(link, "rtnl: received invalid link message type, ignoring."); | |
| 2645 | return 0; | |
| 2646 | } | |
| 2647 | ||
| 2648 | r = link_update(link, m); | |
| 2649 | if (r < 0) { | |
| 2650 | link_enter_failed(link); | |
| 2651 | return 0; | |
| 2652 | } | |
| 2653 | ||
| 2654 | return 1; | |
| 2655 | } | |
| 2656 | ||
| 2657 | int link_call_getlink(Link *link, link_netlink_message_handler_t callback) { | |
| 2658 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
| 2659 | int r; | |
| 2660 | ||
| 2661 | assert(link); | |
| 2662 | assert(link->manager); | |
| 2663 | assert(link->manager->rtnl); | |
| 2664 | assert(callback); | |
| 2665 | ||
| 2666 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, link->ifindex); | |
| 2667 | if (r < 0) | |
| 2668 | return r; | |
| 2669 | ||
| 2670 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, | |
| 2671 | link_netlink_destroy_callback, link); | |
| 2672 | if (r < 0) | |
| 2673 | return r; | |
| 2674 | ||
| 2675 | link_ref(link); | |
| 2676 | return 0; | |
| 2677 | } | |
| 2678 | ||
| fe8db0c5 | 2679 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
| 0580badc | 2680 | [LINK_STATE_PENDING] = "pending", |
| bd08ce56 | 2681 | [LINK_STATE_INITIALIZED] = "initialized", |
| 289e6774 | 2682 | [LINK_STATE_CONFIGURING] = "configuring", |
| 0580badc ZJS |
2683 | [LINK_STATE_CONFIGURED] = "configured", |
| 2684 | [LINK_STATE_UNMANAGED] = "unmanaged", | |
| 2685 | [LINK_STATE_FAILED] = "failed", | |
| 2686 | [LINK_STATE_LINGER] = "linger", | |
| fe8db0c5 TG |
2687 | }; |
| 2688 | ||
| 2689 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
| 7ae55b78 YW |
2690 | |
| 2691 | int link_flags_to_string_alloc(uint32_t flags, char **ret) { | |
| 2692 | _cleanup_free_ char *str = NULL; | |
| 19aa7eeb ZJS |
2693 | static const char* map[] = { |
| 2694 | [LOG2U(IFF_UP)] = "up", /* interface is up. */ | |
| 2695 | [LOG2U(IFF_BROADCAST)] = "broadcast", /* broadcast address valid.*/ | |
| 2696 | [LOG2U(IFF_DEBUG)] = "debug", /* turn on debugging. */ | |
| 2697 | [LOG2U(IFF_LOOPBACK)] = "loopback", /* interface is a loopback net. */ | |
| 2698 | [LOG2U(IFF_POINTOPOINT)] = "point-to-point", /* interface has p-p link. */ | |
| 2699 | [LOG2U(IFF_NOTRAILERS)] = "no-trailers", /* avoid use of trailers. */ | |
| 2700 | [LOG2U(IFF_RUNNING)] = "running", /* interface RFC2863 OPER_UP. */ | |
| 2701 | [LOG2U(IFF_NOARP)] = "no-arp", /* no ARP protocol. */ | |
| 2702 | [LOG2U(IFF_PROMISC)] = "promiscuous", /* receive all packets. */ | |
| 2703 | [LOG2U(IFF_ALLMULTI)] = "all-multicast", /* receive all multicast packets. */ | |
| 2704 | [LOG2U(IFF_MASTER)] = "master", /* master of a load balancer. */ | |
| 2705 | [LOG2U(IFF_SLAVE)] = "slave", /* slave of a load balancer. */ | |
| 2706 | [LOG2U(IFF_MULTICAST)] = "multicast", /* supports multicast.*/ | |
| 2707 | [LOG2U(IFF_PORTSEL)] = "portsel", /* can set media type. */ | |
| 2708 | [LOG2U(IFF_AUTOMEDIA)] = "auto-media", /* auto media select active. */ | |
| 2709 | [LOG2U(IFF_DYNAMIC)] = "dynamic", /* dialup device with changing addresses. */ | |
| 2710 | [LOG2U(IFF_LOWER_UP)] = "lower-up", /* driver signals L1 up. */ | |
| 2711 | [LOG2U(IFF_DORMANT)] = "dormant", /* driver signals dormant. */ | |
| 2712 | [LOG2U(IFF_ECHO)] = "echo", /* echo sent packets. */ | |
| 7ae55b78 YW |
2713 | }; |
| 2714 | ||
| 2715 | assert(ret); | |
| 2716 | ||
| 2717 | for (size_t i = 0; i < ELEMENTSOF(map); i++) | |
| 19aa7eeb ZJS |
2718 | if (FLAGS_SET(flags, 1 << i) && map[i]) |
| 2719 | if (!strextend_with_separator(&str, ",", map[i])) | |
| 2720 | return -ENOMEM; | |
| 7ae55b78 YW |
2721 | |
| 2722 | *ret = TAKE_PTR(str); | |
| 2723 | return 0; | |
| 2724 | } | |
| 2725 | ||
| 2726 | static const char * const kernel_operstate_table[] = { | |
| 2727 | [IF_OPER_UNKNOWN] = "unknown", | |
| 2728 | [IF_OPER_NOTPRESENT] = "not-present", | |
| 2729 | [IF_OPER_DOWN] = "down", | |
| 2730 | [IF_OPER_LOWERLAYERDOWN] = "lower-layer-down", | |
| 2731 | [IF_OPER_TESTING] = "testing", | |
| 2732 | [IF_OPER_DORMANT] = "dormant", | |
| 2733 | [IF_OPER_UP] = "up", | |
| 2734 | }; | |
| 2735 | ||
| 2736 | DEFINE_STRING_TABLE_LOOKUP_TO_STRING(kernel_operstate, int); |