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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
f579559b | 2 | |
9aa5d8ba | 3 | #include <netinet/in.h> |
f579559b | 4 | #include <linux/if.h> |
8f815e8b | 5 | #include <linux/if_arp.h> |
518cd6b5 | 6 | #include <linux/if_link.h> |
8430841b | 7 | #include <sys/socket.h> |
4cc7a82c | 8 | #include <unistd.h> |
f579559b | 9 | |
b5efdb8a | 10 | #include "alloc-util.h" |
c0267a59 | 11 | #include "batadv.h" |
737f1405 YW |
12 | #include "bond.h" |
13 | #include "bridge.h" | |
1346b1f0 | 14 | #include "bus-util.h" |
3be9d62a YW |
15 | #include "device-private.h" |
16 | #include "device-util.h" | |
27dfc982 | 17 | #include "dhcp-identifier.h" |
bd91b83e | 18 | #include "dhcp-lease-internal.h" |
686d13b9 | 19 | #include "env-file.h" |
4bb7cc82 | 20 | #include "ethtool-util.h" |
3ffd4af2 | 21 | #include "fd-util.h" |
cf1d700d | 22 | #include "fileio.h" |
af664001 | 23 | #include "fs-util.h" |
737f1405 | 24 | #include "ipvlan.h" |
ef118d00 | 25 | #include "missing_network.h" |
cf1d700d | 26 | #include "netlink-util.h" |
c6f7c917 | 27 | #include "network-internal.h" |
fb486c90 | 28 | #include "networkd-address-label.h" |
093e3533 | 29 | #include "networkd-address.h" |
3ddcbeea | 30 | #include "networkd-can.h" |
8fcf1d61 | 31 | #include "networkd-dhcp-server.h" |
ca5ad760 YW |
32 | #include "networkd-dhcp4.h" |
33 | #include "networkd-dhcp6.h" | |
ee446d57 | 34 | #include "networkd-fdb.h" |
ca5ad760 | 35 | #include "networkd-ipv4ll.h" |
6a1af3d4 YW |
36 | #include "networkd-link-bus.h" |
37 | #include "networkd-link.h" | |
8e1ad1ea | 38 | #include "networkd-lldp-tx.h" |
23f53b99 | 39 | #include "networkd-manager.h" |
dbf63196 | 40 | #include "networkd-mdb.h" |
1e7a0e21 | 41 | #include "networkd-ndisc.h" |
e4a71bf3 | 42 | #include "networkd-neighbor.h" |
75156ccb | 43 | #include "networkd-nexthop.h" |
518cd6b5 | 44 | #include "networkd-sriov.h" |
5e0534f1 | 45 | #include "networkd-sysctl.h" |
7465dd22 | 46 | #include "networkd-radv.h" |
bce67bbe | 47 | #include "networkd-routing-policy-rule.h" |
3b5a4fc6 | 48 | #include "networkd-state-file.h" |
8d968fdd | 49 | #include "networkd-wifi.h" |
cf1d700d TG |
50 | #include "set.h" |
51 | #include "socket-util.h" | |
bf331d87 | 52 | #include "stat-util.h" |
15a5e950 | 53 | #include "stdio-util.h" |
8b43440b | 54 | #include "string-table.h" |
51517f9e | 55 | #include "strv.h" |
62e021a9 | 56 | #include "sysctl-util.h" |
34658df2 | 57 | #include "tc.h" |
e4de7287 | 58 | #include "tmpfile-util.h" |
299ad32d | 59 | #include "udev-util.h" |
cf1d700d | 60 | #include "util.h" |
737f1405 | 61 | #include "vrf.h" |
fc2f9534 | 62 | |
3ca1fab7 | 63 | bool link_ipv4ll_enabled(Link *link) { |
b9d74c40 LP |
64 | assert(link); |
65 | ||
78c958f8 TG |
66 | if (link->flags & IFF_LOOPBACK) |
67 | return false; | |
68 | ||
69 | if (!link->network) | |
70 | return false; | |
71 | ||
500b96eb | 72 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
73 | return false; |
74 | ||
98d20a17 | 75 | if (STRPTR_IN_SET(link->kind, |
76 | "vrf", "wireguard", "ipip", "gre", "ip6gre","ip6tnl", "sit", "vti", | |
b0486c73 | 77 | "vti6", "nlmon", "xfrm", "bareudp")) |
a8f5bba6 JD |
78 | return false; |
79 | ||
f410d463 YW |
80 | /* L3 or L3S mode do not support ARP. */ |
81 | if (IN_SET(link_get_ipvlan_mode(link), NETDEV_IPVLAN_MODE_L3, NETDEV_IPVLAN_MODE_L3S)) | |
82 | return false; | |
83 | ||
f2bfcdb9 YW |
84 | if (link->network->bond) |
85 | return false; | |
86 | ||
3ca1fab7 | 87 | return link->network->link_local & ADDRESS_FAMILY_IPV4; |
8bc17bb3 SS |
88 | } |
89 | ||
f8f2f880 | 90 | bool link_ipv6ll_enabled(Link *link) { |
b9d74c40 LP |
91 | assert(link); |
92 | ||
fa709992 LP |
93 | if (!socket_ipv6_is_supported()) |
94 | return false; | |
95 | ||
d0d6a4cd TG |
96 | if (link->flags & IFF_LOOPBACK) |
97 | return false; | |
98 | ||
99 | if (!link->network) | |
100 | return false; | |
101 | ||
500b96eb | 102 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
103 | return false; |
104 | ||
105 | if (STRPTR_IN_SET(link->kind, "vrf", "wireguard", "ipip", "gre", "sit", "vti", "nlmon")) | |
a8f5bba6 JD |
106 | return false; |
107 | ||
f2bfcdb9 YW |
108 | if (link->network->bond) |
109 | return false; | |
110 | ||
e0ee46f2 | 111 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
112 | } |
113 | ||
5e0534f1 | 114 | bool link_ipv6_enabled(Link *link) { |
439689c6 SS |
115 | assert(link); |
116 | ||
117 | if (!socket_ipv6_is_supported()) | |
118 | return false; | |
119 | ||
b102cdca | 120 | if (link->network->bond) |
2b00a4e0 TY |
121 | return false; |
122 | ||
500b96eb | 123 | if (link->iftype == ARPHRD_CAN) |
af9ba57a YW |
124 | return false; |
125 | ||
4cef7fe3 | 126 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
adfeee49 YW |
127 | if (link_ipv6ll_enabled(link)) |
128 | return true; | |
129 | ||
130 | if (network_has_static_ipv6_configurations(link->network)) | |
131 | return true; | |
132 | ||
133 | return false; | |
439689c6 SS |
134 | } |
135 | ||
34bf3c00 YW |
136 | static bool link_is_enslaved(Link *link) { |
137 | if (link->flags & IFF_SLAVE) | |
138 | /* Even if the link is not managed by networkd, honor IFF_SLAVE flag. */ | |
139 | return true; | |
140 | ||
34bf3c00 YW |
141 | if (!link->network) |
142 | return false; | |
143 | ||
bb262ef0 | 144 | if (link->master_ifindex > 0 && link->network->bridge) |
34bf3c00 YW |
145 | return true; |
146 | ||
bb262ef0 YW |
147 | /* TODO: add conditions for other netdevs. */ |
148 | ||
34bf3c00 YW |
149 | return false; |
150 | } | |
151 | ||
45e11abf YW |
152 | static void link_update_master_operstate(Link *link, NetDev *netdev) { |
153 | Link *master; | |
154 | ||
155 | if (!netdev) | |
156 | return; | |
157 | ||
7936917e YW |
158 | if (netdev->ifindex <= 0) |
159 | return; | |
160 | ||
45e11abf YW |
161 | if (link_get(link->manager, netdev->ifindex, &master) < 0) |
162 | return; | |
163 | ||
164 | link_update_operstate(master, true); | |
165 | } | |
166 | ||
8430841b L |
167 | static LinkAddressState address_state_from_scope(uint8_t scope) { |
168 | if (scope < RT_SCOPE_SITE) | |
169 | /* universally accessible addresses found */ | |
170 | return LINK_ADDRESS_STATE_ROUTABLE; | |
171 | ||
172 | if (scope < RT_SCOPE_HOST) | |
173 | /* only link or site local addresses found */ | |
174 | return LINK_ADDRESS_STATE_DEGRADED; | |
175 | ||
176 | /* no useful addresses found */ | |
177 | return LINK_ADDRESS_STATE_OFF; | |
178 | } | |
179 | ||
45e11abf | 180 | void link_update_operstate(Link *link, bool also_update_master) { |
84de38c5 | 181 | LinkOperationalState operstate; |
1678fbb3 | 182 | LinkCarrierState carrier_state; |
8430841b | 183 | LinkAddressState ipv4_address_state, ipv6_address_state, address_state; |
35c5a9ca | 184 | _cleanup_strv_free_ char **p = NULL; |
90afec18 | 185 | uint8_t ipv4_scope = RT_SCOPE_NOWHERE, ipv6_scope = RT_SCOPE_NOWHERE; |
35c5a9ca | 186 | bool changed = false; |
1678fbb3 | 187 | Address *address; |
14153d1b | 188 | |
84de38c5 TG |
189 | assert(link); |
190 | ||
191 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
1678fbb3 | 192 | carrier_state = LINK_CARRIER_STATE_DORMANT; |
84de38c5 | 193 | else if (link_has_carrier(link)) { |
1678fbb3 YW |
194 | if (link_is_enslaved(link)) |
195 | carrier_state = LINK_CARRIER_STATE_ENSLAVED; | |
84de38c5 | 196 | else |
1678fbb3 | 197 | carrier_state = LINK_CARRIER_STATE_CARRIER; |
84de38c5 | 198 | } else if (link->flags & IFF_UP) |
1678fbb3 | 199 | carrier_state = LINK_CARRIER_STATE_NO_CARRIER; |
84de38c5 | 200 | else |
1678fbb3 | 201 | carrier_state = LINK_CARRIER_STATE_OFF; |
84de38c5 | 202 | |
1678fbb3 | 203 | if (carrier_state >= LINK_CARRIER_STATE_CARRIER) { |
959f65d3 YW |
204 | Link *slave; |
205 | ||
90e74a66 | 206 | SET_FOREACH(slave, link->slaves) { |
959f65d3 | 207 | link_update_operstate(slave, false); |
84de38c5 | 208 | |
1678fbb3 YW |
209 | if (slave->carrier_state < LINK_CARRIER_STATE_CARRIER) |
210 | carrier_state = LINK_CARRIER_STATE_DEGRADED_CARRIER; | |
84de38c5 | 211 | } |
959f65d3 | 212 | } |
84de38c5 | 213 | |
90e74a66 | 214 | SET_FOREACH(address, link->addresses) { |
1678fbb3 YW |
215 | if (!address_is_ready(address)) |
216 | continue; | |
84de38c5 | 217 | |
90afec18 YW |
218 | if (address->family == AF_INET) |
219 | ipv4_scope = MIN(ipv4_scope, address->scope); | |
8430841b | 220 | |
90afec18 YW |
221 | if (address->family == AF_INET6) |
222 | ipv6_scope = MIN(ipv6_scope, address->scope); | |
1678fbb3 | 223 | } |
84de38c5 | 224 | |
1678fbb3 | 225 | /* for operstate we also take foreign addresses into account */ |
90e74a66 | 226 | SET_FOREACH(address, link->addresses_foreign) { |
1678fbb3 YW |
227 | if (!address_is_ready(address)) |
228 | continue; | |
229 | ||
90afec18 YW |
230 | if (address->family == AF_INET) |
231 | ipv4_scope = MIN(ipv4_scope, address->scope); | |
8430841b | 232 | |
90afec18 YW |
233 | if (address->family == AF_INET6) |
234 | ipv6_scope = MIN(ipv6_scope, address->scope); | |
1678fbb3 YW |
235 | } |
236 | ||
8430841b L |
237 | ipv4_address_state = address_state_from_scope(ipv4_scope); |
238 | ipv6_address_state = address_state_from_scope(ipv6_scope); | |
90afec18 | 239 | address_state = address_state_from_scope(MIN(ipv4_scope, ipv6_scope)); |
1678fbb3 YW |
240 | |
241 | /* Mapping of address and carrier state vs operational state | |
242 | * carrier state | |
243 | * | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
244 | * ------------------------------------------------------------------------------ | |
245 | * off | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
246 | * address_state degraded | off | no-carrier | dormant | degraded-carrier | degraded | enslaved | |
247 | * routable | off | no-carrier | dormant | degraded-carrier | routable | routable | |
248 | */ | |
84de38c5 | 249 | |
1678fbb3 YW |
250 | if (carrier_state < LINK_CARRIER_STATE_CARRIER || address_state == LINK_ADDRESS_STATE_OFF) |
251 | operstate = (LinkOperationalState) carrier_state; | |
252 | else if (address_state == LINK_ADDRESS_STATE_ROUTABLE) | |
253 | operstate = LINK_OPERSTATE_ROUTABLE; | |
254 | else if (carrier_state == LINK_CARRIER_STATE_CARRIER) | |
255 | operstate = LINK_OPERSTATE_DEGRADED; | |
256 | else | |
14153d1b YW |
257 | operstate = LINK_OPERSTATE_ENSLAVED; |
258 | ||
35c5a9ca YW |
259 | if (link->carrier_state != carrier_state) { |
260 | link->carrier_state = carrier_state; | |
261 | changed = true; | |
262 | if (strv_extend(&p, "CarrierState") < 0) | |
263 | log_oom(); | |
264 | } | |
959f65d3 | 265 | |
35c5a9ca YW |
266 | if (link->address_state != address_state) { |
267 | link->address_state = address_state; | |
268 | changed = true; | |
269 | if (strv_extend(&p, "AddressState") < 0) | |
270 | log_oom(); | |
959f65d3 YW |
271 | } |
272 | ||
8430841b L |
273 | if (link->ipv4_address_state != ipv4_address_state) { |
274 | link->ipv4_address_state = ipv4_address_state; | |
275 | changed = true; | |
276 | if (strv_extend(&p, "IPv4AddressState") < 0) | |
277 | log_oom(); | |
278 | } | |
279 | ||
280 | if (link->ipv6_address_state != ipv6_address_state) { | |
281 | link->ipv6_address_state = ipv6_address_state; | |
282 | changed = true; | |
283 | if (strv_extend(&p, "IPv6AddressState") < 0) | |
284 | log_oom(); | |
285 | } | |
286 | ||
84de38c5 TG |
287 | if (link->operstate != operstate) { |
288 | link->operstate = operstate; | |
35c5a9ca YW |
289 | changed = true; |
290 | if (strv_extend(&p, "OperationalState") < 0) | |
291 | log_oom(); | |
84de38c5 | 292 | } |
959f65d3 | 293 | |
35c5a9ca YW |
294 | if (p) |
295 | link_send_changed_strv(link, p); | |
296 | if (changed) | |
297 | link_dirty(link); | |
298 | ||
45e11abf | 299 | if (also_update_master && link->network) { |
c0267a59 | 300 | link_update_master_operstate(link, link->network->batadv); |
45e11abf YW |
301 | link_update_master_operstate(link, link->network->bond); |
302 | link_update_master_operstate(link, link->network->bridge); | |
959f65d3 | 303 | } |
84de38c5 TG |
304 | } |
305 | ||
51d18171 TG |
306 | #define FLAG_STRING(string, flag, old, new) \ |
307 | (((old ^ new) & flag) \ | |
308 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
309 | : "") | |
310 | ||
bb262ef0 | 311 | static int link_update_flags(Link *link, sd_netlink_message *m, bool force_update_operstate) { |
51d18171 TG |
312 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
313 | uint8_t operstate; | |
314 | int r; | |
315 | ||
316 | assert(link); | |
317 | ||
318 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
319 | if (r < 0) |
320 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 321 | |
1c4baffc | 322 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
323 | if (r < 0) |
324 | /* if we got a message without operstate, take it to mean | |
325 | the state was unchanged */ | |
326 | operstate = link->kernel_operstate; | |
327 | ||
bb262ef0 | 328 | if (!force_update_operstate && (link->flags == flags) && (link->kernel_operstate == operstate)) |
51d18171 TG |
329 | return 0; |
330 | ||
331 | if (link->flags != flags) { | |
6a7a4e4d | 332 | 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", |
51d18171 TG |
333 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
334 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
335 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
336 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
337 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
338 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
339 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
340 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
341 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
342 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
343 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
344 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
345 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
346 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
347 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
348 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
349 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
350 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
351 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
352 | ||
353 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
354 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
355 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
356 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
357 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
358 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
359 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
360 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
361 | ||
362 | /* link flags are currently at most 18 bits, let's align to | |
363 | * printing 20 */ | |
364 | if (unknown_flags_added) | |
79008bdd | 365 | log_link_debug(link, |
6a7a4e4d | 366 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
367 | unknown_flags_added); |
368 | ||
369 | if (unknown_flags_removed) | |
79008bdd | 370 | log_link_debug(link, |
6a7a4e4d | 371 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
372 | unknown_flags_removed); |
373 | } | |
374 | ||
375 | link->flags = flags; | |
376 | link->kernel_operstate = operstate; | |
377 | ||
959f65d3 | 378 | link_update_operstate(link, true); |
51d18171 TG |
379 | |
380 | return 0; | |
381 | } | |
382 | ||
1c4baffc | 383 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
8e766630 | 384 | _cleanup_(link_unrefp) Link *link = NULL; |
6cad256d | 385 | const char *ifname, *kind = NULL; |
b710e6b6 | 386 | unsigned short iftype; |
572b21d9 YW |
387 | int r, ifindex; |
388 | uint16_t type; | |
f579559b | 389 | |
0c2f9b84 | 390 | assert(manager); |
505f8da7 | 391 | assert(message); |
f579559b TG |
392 | assert(ret); |
393 | ||
6cad256d TJ |
394 | /* check for link kind */ |
395 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
396 | if (r == 0) { | |
db2f8a2e | 397 | (void) sd_netlink_message_read_string(message, IFLA_INFO_KIND, &kind); |
6cad256d TJ |
398 | r = sd_netlink_message_exit_container(message); |
399 | if (r < 0) | |
400 | return r; | |
401 | } | |
402 | ||
1c4baffc | 403 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
404 | if (r < 0) |
405 | return r; | |
406 | else if (type != RTM_NEWLINK) | |
407 | return -EINVAL; | |
408 | ||
409 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
410 | if (r < 0) | |
411 | return r; | |
412 | else if (ifindex <= 0) | |
413 | return -EINVAL; | |
414 | ||
b710e6b6 LP |
415 | r = sd_rtnl_message_link_get_type(message, &iftype); |
416 | if (r < 0) | |
417 | return r; | |
418 | ||
1c4baffc | 419 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
420 | if (r < 0) |
421 | return r; | |
422 | ||
17f9c355 | 423 | link = new(Link, 1); |
f579559b TG |
424 | if (!link) |
425 | return -ENOMEM; | |
426 | ||
17f9c355 YW |
427 | *link = (Link) { |
428 | .n_ref = 1, | |
429 | .manager = manager, | |
430 | .state = LINK_STATE_PENDING, | |
17f9c355 YW |
431 | .ifindex = ifindex, |
432 | .iftype = iftype, | |
15761549 | 433 | |
f5fbe71d | 434 | .n_dns = UINT_MAX, |
15761549 YW |
435 | .dns_default_route = -1, |
436 | .llmnr = _RESOLVE_SUPPORT_INVALID, | |
437 | .mdns = _RESOLVE_SUPPORT_INVALID, | |
438 | .dnssec_mode = _DNSSEC_MODE_INVALID, | |
439 | .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID, | |
17f9c355 YW |
440 | }; |
441 | ||
505f8da7 TG |
442 | link->ifname = strdup(ifname); |
443 | if (!link->ifname) | |
444 | return -ENOMEM; | |
f579559b | 445 | |
6cad256d TJ |
446 | if (kind) { |
447 | link->kind = strdup(kind); | |
448 | if (!link->kind) | |
449 | return -ENOMEM; | |
450 | } | |
451 | ||
cbff7170 TJ |
452 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t *)&link->master_ifindex); |
453 | if (r < 0) | |
454 | log_link_debug_errno(link, r, "New device has no master, continuing without"); | |
455 | ||
b8162cd2 | 456 | r = netlink_message_read_hw_addr(message, IFLA_ADDRESS, &link->hw_addr); |
512922f8 | 457 | if (r < 0) |
b8162cd2 | 458 | log_link_debug_errno(link, r, "Hardware address not found for new device, continuing without"); |
512922f8 | 459 | |
14b66dbc TR |
460 | r = netlink_message_read_hw_addr(message, IFLA_BROADCAST, &link->bcast_addr); |
461 | if (r < 0) | |
462 | log_link_debug_errno(link, r, "Broadcast address not found for new device, continuing without"); | |
463 | ||
c643bda5 | 464 | r = ethtool_get_permanent_macaddr(&manager->ethtool_fd, link->ifname, &link->permanent_mac); |
4bb7cc82 YW |
465 | if (r < 0) |
466 | log_link_debug_errno(link, r, "Permanent MAC address not found for new device, continuing without: %m"); | |
467 | ||
c643bda5 YW |
468 | r = ethtool_get_driver(&manager->ethtool_fd, link->ifname, &link->driver); |
469 | if (r < 0) | |
470 | log_link_debug_errno(link, r, "Failed to get driver, continuing without: %m"); | |
471 | ||
572b21d9 YW |
472 | r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &link->alternative_names); |
473 | if (r < 0 && r != -ENODATA) | |
474 | return r; | |
475 | ||
34437b4f | 476 | if (asprintf(&link->state_file, "/run/systemd/netif/links/%d", link->ifindex) < 0) |
315db1a8 | 477 | return -ENOMEM; |
fe8db0c5 | 478 | |
34437b4f | 479 | if (asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", link->ifindex) < 0) |
68a8723c TG |
480 | return -ENOMEM; |
481 | ||
34437b4f | 482 | if (asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", link->ifindex) < 0) |
49699bac SS |
483 | return -ENOMEM; |
484 | ||
967d72ed | 485 | r = hashmap_ensure_put(&manager->links, NULL, INT_TO_PTR(link->ifindex), link); |
f579559b TG |
486 | if (r < 0) |
487 | return r; | |
488 | ||
bb262ef0 | 489 | r = link_update_flags(link, message, false); |
51d18171 TG |
490 | if (r < 0) |
491 | return r; | |
492 | ||
1cc6c93a | 493 | *ret = TAKE_PTR(link); |
f579559b TG |
494 | |
495 | return 0; | |
496 | } | |
497 | ||
15761549 YW |
498 | void link_ntp_settings_clear(Link *link) { |
499 | link->ntp = strv_free(link->ntp); | |
500 | } | |
501 | ||
502 | void link_dns_settings_clear(Link *link) { | |
f5fbe71d | 503 | if (link->n_dns != UINT_MAX) |
e77bd3fd YW |
504 | for (unsigned i = 0; i < link->n_dns; i++) |
505 | in_addr_full_free(link->dns[i]); | |
15761549 | 506 | link->dns = mfree(link->dns); |
f5fbe71d | 507 | link->n_dns = UINT_MAX; |
15761549 | 508 | |
6e4571f0 YW |
509 | link->search_domains = ordered_set_free(link->search_domains); |
510 | link->route_domains = ordered_set_free(link->route_domains); | |
15761549 YW |
511 | |
512 | link->dns_default_route = -1; | |
513 | link->llmnr = _RESOLVE_SUPPORT_INVALID; | |
514 | link->mdns = _RESOLVE_SUPPORT_INVALID; | |
515 | link->dnssec_mode = _DNSSEC_MODE_INVALID; | |
516 | link->dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID; | |
517 | ||
518 | link->dnssec_negative_trust_anchors = set_free_free(link->dnssec_negative_trust_anchors); | |
519 | } | |
520 | ||
1a6bb31f YW |
521 | static void link_free_engines(Link *link) { |
522 | if (!link) | |
523 | return; | |
524 | ||
525 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); | |
526 | link->dhcp_client = sd_dhcp_client_unref(link->dhcp_client); | |
527 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); | |
1c494872 | 528 | link->dhcp_acd = sd_ipv4acd_unref(link->dhcp_acd); |
1a6bb31f YW |
529 | |
530 | link->lldp = sd_lldp_unref(link->lldp); | |
1c494872 | 531 | link_lldp_emit_stop(link); |
1a6bb31f YW |
532 | |
533 | ndisc_flush(link); | |
534 | ||
535 | link->ipv4ll = sd_ipv4ll_unref(link->ipv4ll); | |
536 | link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); | |
1633c457 | 537 | link->dhcp6_lease = sd_dhcp6_lease_unref(link->dhcp6_lease); |
1a6bb31f YW |
538 | link->ndisc = sd_ndisc_unref(link->ndisc); |
539 | link->radv = sd_radv_unref(link->radv); | |
7abe175c YW |
540 | |
541 | ipv4_dad_unref(link); | |
1a6bb31f YW |
542 | } |
543 | ||
8301aa0b | 544 | static Link *link_free(Link *link) { |
8301aa0b | 545 | assert(link); |
f579559b | 546 | |
15761549 YW |
547 | link_ntp_settings_clear(link); |
548 | link_dns_settings_clear(link); | |
549 | ||
8eec0b9d YW |
550 | link->routes = set_free(link->routes); |
551 | link->routes_foreign = set_free(link->routes_foreign); | |
6e537f62 YW |
552 | link->dhcp_routes = set_free(link->dhcp_routes); |
553 | link->dhcp_routes_old = set_free(link->dhcp_routes_old); | |
1633c457 YW |
554 | link->dhcp6_routes = set_free(link->dhcp6_routes); |
555 | link->dhcp6_routes_old = set_free(link->dhcp6_routes_old); | |
556 | link->dhcp6_pd_routes = set_free(link->dhcp6_pd_routes); | |
557 | link->dhcp6_pd_routes_old = set_free(link->dhcp6_pd_routes_old); | |
69203fba | 558 | link->ndisc_routes = set_free(link->ndisc_routes); |
adda1ed9 | 559 | |
8eec0b9d YW |
560 | link->nexthops = set_free(link->nexthops); |
561 | link->nexthops_foreign = set_free(link->nexthops_foreign); | |
c16c7808 | 562 | |
8eec0b9d YW |
563 | link->neighbors = set_free(link->neighbors); |
564 | link->neighbors_foreign = set_free(link->neighbors_foreign); | |
d1bdafd2 | 565 | |
8eec0b9d YW |
566 | link->addresses = set_free(link->addresses); |
567 | link->addresses_foreign = set_free(link->addresses_foreign); | |
aa651e88 | 568 | link->pool_addresses = set_free(link->pool_addresses); |
e5526518 | 569 | link->static_addresses = set_free(link->static_addresses); |
1633c457 YW |
570 | link->dhcp6_addresses = set_free(link->dhcp6_addresses); |
571 | link->dhcp6_addresses_old = set_free(link->dhcp6_addresses_old); | |
572 | link->dhcp6_pd_addresses = set_free(link->dhcp6_pd_addresses); | |
573 | link->dhcp6_pd_addresses_old = set_free(link->dhcp6_pd_addresses_old); | |
69203fba | 574 | link->ndisc_addresses = set_free(link->ndisc_addresses); |
adda1ed9 | 575 | |
4b409e85 YW |
576 | link->dhcp6_pd_prefixes = set_free(link->dhcp6_pd_prefixes); |
577 | ||
1a6bb31f | 578 | link_free_engines(link); |
49699bac | 579 | |
c166a070 | 580 | free(link->ifname); |
572b21d9 | 581 | strv_free(link->alternative_names); |
ceac4078 | 582 | free(link->kind); |
8d968fdd | 583 | free(link->ssid); |
c643bda5 | 584 | free(link->driver); |
6cad256d | 585 | |
a34e58d4 YW |
586 | unlink_and_free(link->lease_file); |
587 | unlink_and_free(link->lldp_file); | |
588 | unlink_and_free(link->state_file); | |
c166a070 | 589 | |
51517f9e | 590 | sd_device_unref(link->sd_device); |
b5db00e5 | 591 | |
0d4ad91d | 592 | hashmap_free(link->bound_to_links); |
0d4ad91d AR |
593 | hashmap_free(link->bound_by_links); |
594 | ||
5f707e12 | 595 | set_free_with_destructor(link->slaves, link_unref); |
033295c1 | 596 | |
c9c908a6 YW |
597 | network_unref(link->network); |
598 | ||
8301aa0b | 599 | return mfree(link); |
14b746f7 TG |
600 | } |
601 | ||
8301aa0b | 602 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 603 | |
11a7f229 TG |
604 | int link_get(Manager *m, int ifindex, Link **ret) { |
605 | Link *link; | |
11a7f229 TG |
606 | |
607 | assert(m); | |
e856ed00 | 608 | assert(ifindex > 0); |
11a7f229 TG |
609 | assert(ret); |
610 | ||
ae06ab10 | 611 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
612 | if (!link) |
613 | return -ENODEV; | |
614 | ||
615 | *ret = link; | |
616 | ||
617 | return 0; | |
618 | } | |
619 | ||
af9ba57a | 620 | void link_set_state(Link *link, LinkState state) { |
e331e246 TG |
621 | assert(link); |
622 | ||
623 | if (link->state == state) | |
624 | return; | |
625 | ||
0beb9542 YW |
626 | log_link_debug(link, "State changed: %s -> %s", |
627 | link_state_to_string(link->state), | |
628 | link_state_to_string(state)); | |
629 | ||
e331e246 TG |
630 | link->state = state; |
631 | ||
632 | link_send_changed(link, "AdministrativeState", NULL); | |
9092113d | 633 | link_dirty(link); |
e331e246 TG |
634 | } |
635 | ||
57bd6899 TG |
636 | static void link_enter_unmanaged(Link *link) { |
637 | assert(link); | |
638 | ||
e331e246 | 639 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 TG |
640 | } |
641 | ||
2a99eed0 | 642 | int link_stop_engines(Link *link, bool may_keep_dhcp) { |
111bb8f9 TG |
643 | int r = 0, k; |
644 | ||
645 | assert(link); | |
646 | assert(link->manager); | |
647 | assert(link->manager->event); | |
648 | ||
80060352 ZJS |
649 | bool keep_dhcp = may_keep_dhcp && |
650 | link->network && | |
651 | (link->manager->restarting || | |
652 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP_ON_STOP)); | |
653 | ||
84add3cd | 654 | if (!keep_dhcp) { |
111bb8f9 | 655 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 656 | if (k < 0) |
36c7d709 | 657 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
658 | } |
659 | ||
84add3cd YW |
660 | k = sd_ipv4acd_stop(link->dhcp_acd); |
661 | if (k < 0) | |
662 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client for DHCPv4: %m"); | |
a7df5cae | 663 | |
2a99eed0 YW |
664 | k = sd_dhcp_server_stop(link->dhcp_server); |
665 | if (k < 0) | |
666 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 server: %m"); | |
667 | ||
9cc65242 YW |
668 | k = sd_lldp_stop(link->lldp); |
669 | if (k < 0) | |
670 | r = log_link_warning_errno(link, k, "Could not stop LLDP: %m"); | |
671 | ||
84add3cd YW |
672 | k = sd_ipv4ll_stop(link->ipv4ll); |
673 | if (k < 0) | |
674 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); | |
dd43110f | 675 | |
490ccbd5 | 676 | k = ipv4_dad_stop(link); |
2488e4d9 YW |
677 | if (k < 0) |
678 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client: %m"); | |
051e77ca | 679 | |
84add3cd YW |
680 | k = sd_dhcp6_client_stop(link->dhcp6_client); |
681 | if (k < 0) | |
682 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); | |
4138fb2c | 683 | |
2ffd6d73 YW |
684 | k = dhcp6_pd_remove(link); |
685 | if (k < 0) | |
686 | r = log_link_warning_errno(link, k, "Could not remove DHCPv6 PD addresses and routes: %m"); | |
1633c457 | 687 | |
84add3cd YW |
688 | k = sd_ndisc_stop(link->ndisc); |
689 | if (k < 0) | |
690 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); | |
4138fb2c | 691 | |
84add3cd YW |
692 | k = sd_radv_stop(link->radv); |
693 | if (k < 0) | |
694 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
7465dd22 | 695 | |
7272b25e | 696 | link_lldp_emit_stop(link); |
111bb8f9 TG |
697 | return r; |
698 | } | |
699 | ||
b22d8a00 | 700 | void link_enter_failed(Link *link) { |
ef1ba606 | 701 | assert(link); |
f882c247 | 702 | |
370e9930 | 703 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
704 | return; |
705 | ||
6a7a4e4d | 706 | log_link_warning(link, "Failed"); |
449f7554 | 707 | |
e331e246 | 708 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 709 | |
2a99eed0 | 710 | (void) link_stop_engines(link, false); |
f882c247 TG |
711 | } |
712 | ||
7033af49 YW |
713 | static int link_join_netdevs_after_configured(Link *link) { |
714 | NetDev *netdev; | |
7033af49 YW |
715 | int r; |
716 | ||
90e74a66 | 717 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
7033af49 YW |
718 | if (netdev->ifindex > 0) |
719 | /* Assume already enslaved. */ | |
720 | continue; | |
721 | ||
722 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_AFTER_CONFIGURED) | |
723 | continue; | |
724 | ||
725 | log_struct(LOG_DEBUG, | |
726 | LOG_LINK_INTERFACE(link), | |
727 | LOG_NETDEV_INTERFACE(netdev), | |
728 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); | |
729 | ||
730 | r = netdev_join(netdev, link, NULL); | |
731 | if (r < 0) | |
732 | return log_struct_errno(LOG_WARNING, r, | |
733 | LOG_LINK_INTERFACE(link), | |
734 | LOG_NETDEV_INTERFACE(netdev), | |
735 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); | |
736 | } | |
737 | ||
738 | return 0; | |
739 | } | |
740 | ||
e3a7b048 | 741 | static void link_enter_configured(Link *link) { |
dd43110f TG |
742 | assert(link); |
743 | assert(link->network); | |
e3a7b048 | 744 | |
289e6774 | 745 | if (link->state != LINK_STATE_CONFIGURING) |
e3a7b048 | 746 | return; |
dd43110f | 747 | |
e331e246 | 748 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 749 | |
7033af49 | 750 | (void) link_join_netdevs_after_configured(link); |
dd43110f TG |
751 | } |
752 | ||
6accfd31 DA |
753 | void link_check_ready(Link *link) { |
754 | Address *a; | |
6accfd31 DA |
755 | |
756 | assert(link); | |
757 | ||
5f58af25 YW |
758 | if (link->state == LINK_STATE_CONFIGURED) |
759 | return; | |
760 | ||
d19b9939 YW |
761 | if (link->state != LINK_STATE_CONFIGURING) |
762 | return (void) log_link_debug(link, "%s(): link is in %s state.", __func__, link_state_to_string(link->state)); | |
6accfd31 DA |
763 | |
764 | if (!link->network) | |
765 | return; | |
766 | ||
600b7898 YW |
767 | if (link->iftype == ARPHRD_CAN) { |
768 | /* let's shortcut things for CAN which doesn't need most of checks below. */ | |
769 | if (!link->can_configured) | |
770 | return (void) log_link_debug(link, "%s(): CAN device is not configured.", __func__); | |
771 | ||
772 | link_enter_configured(link); | |
773 | return; | |
774 | } | |
775 | ||
d19b9939 YW |
776 | if (!link->addresses_configured) |
777 | return (void) log_link_debug(link, "%s(): static addresses are not configured.", __func__); | |
6accfd31 | 778 | |
d19b9939 YW |
779 | if (!link->neighbors_configured) |
780 | return (void) log_link_debug(link, "%s(): static neighbors are not configured.", __func__); | |
6accfd31 | 781 | |
90e74a66 | 782 | SET_FOREACH(a, link->addresses) |
39373cb9 YW |
783 | if (!address_is_ready(a)) { |
784 | _cleanup_free_ char *str = NULL; | |
785 | ||
5380707a YW |
786 | (void) in_addr_prefix_to_string(a->family, &a->in_addr, a->prefixlen, &str); |
787 | return (void) log_link_debug(link, "%s(): an address %s is not ready.", __func__, strna(str)); | |
39373cb9 | 788 | } |
6aa5773b | 789 | |
d19b9939 YW |
790 | if (!link->static_routes_configured) |
791 | return (void) log_link_debug(link, "%s(): static routes are not configured.", __func__); | |
6accfd31 | 792 | |
d19b9939 YW |
793 | if (!link->static_nexthops_configured) |
794 | return (void) log_link_debug(link, "%s(): static nexthops are not configured.", __func__); | |
c16c7808 | 795 | |
d19b9939 YW |
796 | if (!link->routing_policy_rules_configured) |
797 | return (void) log_link_debug(link, "%s(): static routing policy rules are not configured.", __func__); | |
6accfd31 | 798 | |
d19b9939 YW |
799 | if (!link->tc_configured) |
800 | return (void) log_link_debug(link, "%s(): traffic controls are not configured.", __func__); | |
4ecdcb07 | 801 | |
d19b9939 YW |
802 | if (!link->sr_iov_configured) |
803 | return (void) log_link_debug(link, "%s(): SR-IOV is not configured.", __func__); | |
518cd6b5 | 804 | |
d19b9939 YW |
805 | if (!link->bridge_mdb_configured) |
806 | return (void) log_link_debug(link, "%s(): Bridge MDB is not configured.", __func__); | |
1f241589 | 807 | |
463797c1 | 808 | if (link_has_carrier(link) || !link->network->configure_without_carrier) { |
50550722 YW |
809 | bool has_ndisc_address = false; |
810 | NDiscAddress *n; | |
6accfd31 | 811 | |
94876904 YW |
812 | if (link_ipv6ll_enabled(link) && !in6_addr_is_set(&link->ipv6ll_address)) |
813 | return (void) log_link_debug(link, "%s(): IPv6LL is not configured yet.", __func__); | |
6accfd31 | 814 | |
90e74a66 | 815 | SET_FOREACH(n, link->ndisc_addresses) |
50550722 YW |
816 | if (!n->marked) { |
817 | has_ndisc_address = true; | |
818 | break; | |
819 | } | |
820 | ||
8cd37e43 | 821 | if ((link_dhcp4_enabled(link) || link_dhcp6_with_address_enabled(link) || link_ipv4ll_enabled(link)) && |
50550722 | 822 | !link->dhcp_address && set_isempty(link->dhcp6_addresses) && !has_ndisc_address && |
0d0799da YW |
823 | !link->ipv4ll_address_configured) |
824 | /* When DHCP[46] or IPv4LL is enabled, at least one address is acquired by them. */ | |
825 | return (void) log_link_debug(link, "%s(): DHCP4, DHCP6 or IPv4LL is enabled but no dynamic address is assigned yet.", __func__); | |
659ad3a0 | 826 | |
0d0799da YW |
827 | if (link_dhcp4_enabled(link) || link_dhcp6_enabled(link) || link_dhcp6_pd_is_enabled(link) || |
828 | link_ipv6_accept_ra_enabled(link) || link_ipv4ll_enabled(link)) { | |
39373cb9 YW |
829 | if (!link->dhcp4_configured && |
830 | !(link->dhcp6_address_configured && link->dhcp6_route_configured) && | |
831 | !(link->dhcp6_pd_address_configured && link->dhcp6_pd_route_configured) && | |
d98c546d | 832 | !(link->ndisc_addresses_configured && link->ndisc_routes_configured) && |
0d0799da YW |
833 | !link->ipv4ll_address_configured) |
834 | /* When DHCP[46], NDisc, or IPv4LL is enabled, at least one protocol must be finished. */ | |
d19b9939 | 835 | return (void) log_link_debug(link, "%s(): dynamic addresses or routes are not configured.", __func__); |
39373cb9 | 836 | |
0d0799da | 837 | log_link_debug(link, "%s(): dhcp4:%s ipv4ll:%s dhcp6_addresses:%s dhcp_routes:%s dhcp_pd_addresses:%s dhcp_pd_routes:%s ndisc_addresses:%s ndisc_routes:%s", |
39373cb9 YW |
838 | __func__, |
839 | yes_no(link->dhcp4_configured), | |
0d0799da | 840 | yes_no(link->ipv4ll_address_configured), |
39373cb9 YW |
841 | yes_no(link->dhcp6_address_configured), |
842 | yes_no(link->dhcp6_route_configured), | |
843 | yes_no(link->dhcp6_pd_address_configured), | |
844 | yes_no(link->dhcp6_pd_route_configured), | |
d98c546d YW |
845 | yes_no(link->ndisc_addresses_configured), |
846 | yes_no(link->ndisc_routes_configured)); | |
39373cb9 | 847 | } |
463797c1 | 848 | } |
6accfd31 | 849 | |
5f58af25 | 850 | link_enter_configured(link); |
6accfd31 DA |
851 | } |
852 | ||
682c65b0 | 853 | static int link_set_static_configs(Link *link) { |
f882c247 TG |
854 | int r; |
855 | ||
856 | assert(link); | |
857 | assert(link->network); | |
f5be5601 | 858 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 859 | |
2428613f | 860 | /* Reset all *_configured flags we are configuring. */ |
9b966cee | 861 | link->request_static_addresses = false; |
2428613f | 862 | link->addresses_configured = false; |
6aa5773b | 863 | link->addresses_ready = false; |
2428613f YW |
864 | link->neighbors_configured = false; |
865 | link->static_routes_configured = false; | |
c16c7808 | 866 | link->static_nexthops_configured = false; |
2428613f YW |
867 | link->routing_policy_rules_configured = false; |
868 | ||
f6bb7ac5 TJ |
869 | r = link_set_bridge_fdb(link); |
870 | if (r < 0) | |
871 | return r; | |
872 | ||
1f241589 YW |
873 | r = link_set_bridge_mdb(link); |
874 | if (r < 0) | |
875 | return r; | |
876 | ||
58f1fe9a | 877 | r = link_set_neighbors(link); |
f3ef324d YW |
878 | if (r < 0) |
879 | return r; | |
e4a71bf3 | 880 | |
682c65b0 YW |
881 | r = link_set_addresses(link); |
882 | if (r < 0) | |
883 | return r; | |
bd6379ec | 884 | |
fe2bc17c YW |
885 | r = link_set_address_labels(link); |
886 | if (r < 0) | |
887 | return r; | |
f882c247 | 888 | |
e5526518 | 889 | /* now that we can figure out a default address for the dhcp server, start it */ |
5ae0fb7f YW |
890 | r = dhcp4_server_configure(link); |
891 | if (r < 0) | |
892 | return r; | |
d4cdbea5 | 893 | |
f882c247 TG |
894 | return 0; |
895 | } | |
896 | ||
3a390124 | 897 | static int link_configure_continue(Link *link); |
55dc8c4a | 898 | |
e16e4b3b DS |
899 | static int link_mac_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
900 | int r; | |
901 | ||
902 | assert(link); | |
903 | ||
904 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
905 | return 1; | |
906 | ||
907 | r = sd_netlink_message_get_errno(m); | |
908 | if (r < 0) | |
909 | log_link_message_warning_errno(link, m, r, "Could not set MAC address, ignoring"); | |
910 | else | |
911 | log_link_debug(link, "Setting MAC address done."); | |
912 | ||
913 | return 1; | |
914 | } | |
915 | ||
916 | static int link_set_mac(Link *link) { | |
917 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
918 | int r; | |
919 | ||
920 | assert(link); | |
921 | assert(link->network); | |
922 | assert(link->manager); | |
923 | assert(link->manager->rtnl); | |
924 | ||
925 | if (!link->network->mac) | |
926 | return 0; | |
927 | ||
928 | log_link_debug(link, "Setting MAC address"); | |
929 | ||
930 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
931 | if (r < 0) | |
932 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
933 | ||
934 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); | |
935 | if (r < 0) | |
936 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
937 | ||
938 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_mac_handler, | |
939 | link_netlink_destroy_callback, link); | |
940 | if (r < 0) | |
941 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
942 | ||
943 | link_ref(link); | |
944 | ||
945 | return 0; | |
946 | } | |
947 | ||
948 | static int link_nomaster_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
949 | int r; | |
950 | ||
951 | assert(link); | |
952 | ||
953 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
954 | return 1; | |
955 | ||
956 | r = sd_netlink_message_get_errno(m); | |
957 | if (r < 0) | |
958 | log_link_message_warning_errno(link, m, r, "Could not set nomaster, ignoring"); | |
959 | else | |
960 | log_link_debug(link, "Setting nomaster done."); | |
961 | ||
962 | return 1; | |
963 | } | |
964 | ||
965 | static int link_set_nomaster(Link *link) { | |
966 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
967 | int r; | |
968 | ||
969 | assert(link); | |
970 | assert(link->network); | |
971 | assert(link->manager); | |
972 | assert(link->manager->rtnl); | |
973 | ||
974 | /* set it free if not enslaved with networkd */ | |
c0267a59 | 975 | if (link->network->batadv || link->network->bridge || link->network->bond || link->network->vrf) |
e16e4b3b DS |
976 | return 0; |
977 | ||
978 | log_link_debug(link, "Setting nomaster"); | |
979 | ||
980 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
981 | if (r < 0) | |
982 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
983 | ||
984 | r = sd_netlink_message_append_u32(req, IFLA_MASTER, 0); | |
985 | if (r < 0) | |
986 | return log_link_error_errno(link, r, "Could not append IFLA_MASTER attribute: %m"); | |
987 | ||
988 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_nomaster_handler, | |
989 | link_netlink_destroy_callback, link); | |
990 | if (r < 0) | |
991 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
992 | ||
993 | link_ref(link); | |
994 | ||
995 | return 0; | |
996 | } | |
997 | ||
302a796f | 998 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4f882b2a TG |
999 | int r; |
1000 | ||
1001 | assert(m); | |
1002 | assert(link); | |
1003 | assert(link->ifname); | |
1004 | ||
55dc8c4a YW |
1005 | link->setting_mtu = false; |
1006 | ||
5da8149f | 1007 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
1008 | return 1; |
1009 | ||
1c4baffc | 1010 | r = sd_netlink_message_get_errno(m); |
4ff296b0 | 1011 | if (r < 0) |
5ecb131d | 1012 | log_link_message_warning_errno(link, m, r, "Could not set MTU, ignoring"); |
4ff296b0 YW |
1013 | else |
1014 | log_link_debug(link, "Setting MTU done."); | |
55dc8c4a | 1015 | |
4ff296b0 | 1016 | if (link->state == LINK_STATE_INITIALIZED) { |
3a390124 | 1017 | r = link_configure_continue(link); |
4ff296b0 YW |
1018 | if (r < 0) |
1019 | link_enter_failed(link); | |
1020 | } | |
4f882b2a TG |
1021 | |
1022 | return 1; | |
1023 | } | |
1024 | ||
933c70a0 | 1025 | int link_set_mtu(Link *link, uint32_t mtu) { |
4afd3348 | 1026 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f882b2a TG |
1027 | int r; |
1028 | ||
1029 | assert(link); | |
1030 | assert(link->manager); | |
1031 | assert(link->manager->rtnl); | |
1032 | ||
40288ece YW |
1033 | if (mtu == 0 || link->setting_mtu) |
1034 | return 0; | |
1035 | ||
933c70a0 | 1036 | if (link->mtu == mtu) |
ee493106 YW |
1037 | return 0; |
1038 | ||
6a7a4e4d | 1039 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1040 | |
6a7a4e4d LP |
1041 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1042 | if (r < 0) | |
1043 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1044 | |
44b598a1 | 1045 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes |
72c2500b YW |
1046 | * on the interface. Bump up MTU bytes to IPV6_MTU_MIN. */ |
1047 | if (link_ipv6_enabled(link) && mtu < IPV6_MIN_MTU) { | |
44b598a1 SS |
1048 | |
1049 | log_link_warning(link, "Bumping MTU to " STRINGIFY(IPV6_MIN_MTU) ", as " | |
d236718c | 1050 | "IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes"); |
44b598a1 | 1051 | |
72c2500b | 1052 | mtu = IPV6_MIN_MTU; |
44b598a1 SS |
1053 | } |
1054 | ||
1c4baffc | 1055 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1056 | if (r < 0) |
1057 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1058 | |
302a796f YW |
1059 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_mtu_handler, |
1060 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1061 | if (r < 0) |
1062 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1063 | |
ae941762 | 1064 | link_ref(link); |
1046bf9b | 1065 | link->setting_mtu = true; |
b226d99b | 1066 | |
4f882b2a TG |
1067 | return 0; |
1068 | } | |
1069 | ||
f6fcc1c2 YW |
1070 | static bool link_reduces_vlan_mtu(Link *link) { |
1071 | /* See netif_reduces_vlan_mtu() in kernel. */ | |
1072 | return streq_ptr(link->kind, "macsec"); | |
1073 | } | |
1074 | ||
1075 | static uint32_t link_get_requested_mtu_by_stacked_netdevs(Link *link) { | |
1076 | uint32_t mtu = 0; | |
1077 | NetDev *dev; | |
f6fcc1c2 | 1078 | |
90e74a66 | 1079 | HASHMAP_FOREACH(dev, link->network->stacked_netdevs) |
f6fcc1c2 YW |
1080 | if (dev->kind == NETDEV_KIND_VLAN && dev->mtu > 0) |
1081 | /* See vlan_dev_change_mtu() in kernel. */ | |
1082 | mtu = MAX(mtu, link_reduces_vlan_mtu(link) ? dev->mtu + 4 : dev->mtu); | |
1083 | ||
1084 | else if (dev->kind == NETDEV_KIND_MACVLAN && dev->mtu > mtu) | |
1085 | /* See macvlan_change_mtu() in kernel. */ | |
1086 | mtu = dev->mtu; | |
1087 | ||
1088 | return mtu; | |
1089 | } | |
1090 | ||
1091 | static int link_configure_mtu(Link *link) { | |
1092 | uint32_t mtu; | |
1093 | ||
1094 | assert(link); | |
1095 | assert(link->network); | |
1096 | ||
1097 | if (link->network->mtu > 0) | |
1098 | return link_set_mtu(link, link->network->mtu); | |
1099 | ||
1100 | mtu = link_get_requested_mtu_by_stacked_netdevs(link); | |
1101 | if (link->mtu >= mtu) | |
1102 | return 0; | |
1103 | ||
1104 | log_link_notice(link, "Bumping MTU bytes from %"PRIu32" to %"PRIu32" because of stacked device. " | |
1105 | "If it is not desired, then please explicitly specify MTUBytes= setting.", | |
1106 | link->mtu, mtu); | |
1107 | ||
1108 | return link_set_mtu(link, mtu); | |
1109 | } | |
1110 | ||
302a796f | 1111 | static int set_flags_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
99d2baa2 SS |
1112 | int r; |
1113 | ||
1114 | assert(m); | |
1115 | assert(link); | |
1116 | assert(link->ifname); | |
1117 | ||
1118 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1119 | return 1; | |
1120 | ||
1121 | r = sd_netlink_message_get_errno(m); | |
1122 | if (r < 0) | |
5ecb131d | 1123 | log_link_message_warning_errno(link, m, r, "Could not set link flags, ignoring"); |
99d2baa2 SS |
1124 | |
1125 | return 1; | |
1126 | } | |
1127 | ||
1128 | static int link_set_flags(Link *link) { | |
1129 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1130 | unsigned ifi_change = 0; | |
1131 | unsigned ifi_flags = 0; | |
1132 | int r; | |
1133 | ||
1134 | assert(link); | |
1135 | assert(link->manager); | |
1136 | assert(link->manager->rtnl); | |
1137 | ||
1138 | if (link->flags & IFF_LOOPBACK) | |
1139 | return 0; | |
1140 | ||
1141 | if (!link->network) | |
1142 | return 0; | |
1143 | ||
937e305e SS |
1144 | if (link->network->arp < 0 && link->network->multicast < 0 && link->network->allmulticast < 0 && |
1145 | link->network->promiscuous < 0) | |
99d2baa2 SS |
1146 | return 0; |
1147 | ||
1148 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1149 | if (r < 0) | |
1150 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1151 | ||
1152 | if (link->network->arp >= 0) { | |
1153 | ifi_change |= IFF_NOARP; | |
e6ebebbe SS |
1154 | SET_FLAG(ifi_flags, IFF_NOARP, link->network->arp == 0); |
1155 | } | |
1156 | ||
1157 | if (link->network->multicast >= 0) { | |
1158 | ifi_change |= IFF_MULTICAST; | |
1159 | SET_FLAG(ifi_flags, IFF_MULTICAST, link->network->multicast); | |
99d2baa2 SS |
1160 | } |
1161 | ||
866e6b7a SS |
1162 | if (link->network->allmulticast >= 0) { |
1163 | ifi_change |= IFF_ALLMULTI; | |
1164 | SET_FLAG(ifi_flags, IFF_ALLMULTI, link->network->allmulticast); | |
1165 | } | |
1166 | ||
937e305e SS |
1167 | if (link->network->promiscuous >= 0) { |
1168 | ifi_change |= IFF_PROMISC; | |
1169 | SET_FLAG(ifi_flags, IFF_PROMISC, link->network->promiscuous); | |
1170 | } | |
1171 | ||
99d2baa2 SS |
1172 | r = sd_rtnl_message_link_set_flags(req, ifi_flags, ifi_change); |
1173 | if (r < 0) | |
1174 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
1175 | ||
302a796f YW |
1176 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_flags_handler, |
1177 | link_netlink_destroy_callback, link); | |
99d2baa2 SS |
1178 | if (r < 0) |
1179 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1180 | ||
1181 | link_ref(link); | |
1182 | ||
1183 | return 0; | |
1184 | } | |
1185 | ||
e7ab854c TG |
1186 | static int link_acquire_ipv6_conf(Link *link) { |
1187 | int r; | |
1188 | ||
1189 | assert(link); | |
1190 | ||
086b8853 | 1191 | if (link->radv) { |
7465dd22 | 1192 | assert(link->radv); |
94876904 | 1193 | assert(in6_addr_is_link_local(&link->ipv6ll_address)); |
7465dd22 PF |
1194 | |
1195 | log_link_debug(link, "Starting IPv6 Router Advertisements"); | |
1196 | ||
fd3ef936 YW |
1197 | r = radv_emit_dns(link); |
1198 | if (r < 0) | |
1199 | return log_link_warning_errno(link, r, "Failed to configure DNS or Domains in IPv6 Router Advertisement: %m"); | |
1200 | ||
7465dd22 PF |
1201 | r = sd_radv_start(link->radv); |
1202 | if (r < 0 && r != -EBUSY) | |
1203 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Advertisement: %m"); | |
1204 | } | |
1205 | ||
294f129b YW |
1206 | r = ndisc_start(link); |
1207 | if (r < 0) | |
1208 | return log_link_warning_errno(link, r, "Failed to start IPv6 Router Discovery: %m"); | |
cd305af1 | 1209 | |
294f129b YW |
1210 | r = dhcp6_start(link); |
1211 | if (r < 0) | |
1212 | return log_link_warning_errno(link, r, "Failed to start DHCPv6 client: %m"); | |
cd305af1 | 1213 | |
1633c457 YW |
1214 | r = dhcp6_request_prefix_delegation(link); |
1215 | if (r < 0) | |
1216 | return log_link_warning_errno(link, r, "Failed to request DHCPv6 prefix delegation: %m"); | |
10752343 | 1217 | |
e7ab854c TG |
1218 | return 0; |
1219 | } | |
1220 | ||
6fc25497 | 1221 | static int link_acquire_ipv4_conf(Link *link) { |
ff254138 TG |
1222 | int r; |
1223 | ||
1224 | assert(link); | |
ff254138 TG |
1225 | assert(link->manager); |
1226 | assert(link->manager->event); | |
1227 | ||
0107b769 | 1228 | if (link->dhcp_client) { |
294f129b | 1229 | r = dhcp4_start(link); |
0107b769 | 1230 | if (r < 0) |
294f129b | 1231 | return log_link_warning_errno(link, r, "Failed to start DHCPv4 client: %m"); |
0107b769 | 1232 | |
0b4b66cc | 1233 | } else if (link->ipv4ll) { |
6a7a4e4d | 1234 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1235 | |
1236 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1237 | if (r < 0) |
1238 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1239 | } |
1240 | ||
6fc25497 SS |
1241 | return 0; |
1242 | } | |
1243 | ||
1244 | static int link_acquire_conf(Link *link) { | |
1245 | int r; | |
1246 | ||
1247 | assert(link); | |
1248 | ||
1249 | r = link_acquire_ipv4_conf(link); | |
1250 | if (r < 0) | |
1251 | return r; | |
1252 | ||
94876904 | 1253 | if (in6_addr_is_set(&link->ipv6ll_address)) { |
6fc25497 SS |
1254 | r = link_acquire_ipv6_conf(link); |
1255 | if (r < 0) | |
1256 | return r; | |
1257 | } | |
1258 | ||
2ffd6d73 YW |
1259 | r = link_lldp_emit_start(link); |
1260 | if (r < 0) | |
1261 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
8e1ad1ea | 1262 | |
ff254138 TG |
1263 | return 0; |
1264 | } | |
1265 | ||
a61bb41c | 1266 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1267 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1268 | ||
a61bb41c | 1269 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1270 | return true; |
1271 | ||
a61bb41c | 1272 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1273 | /* operstate may not be implemented, so fall back to flags */ |
b26ea308 YW |
1274 | if (FLAGS_SET(link->flags, IFF_LOWER_UP | IFF_RUNNING) && |
1275 | !FLAGS_SET(link->flags, IFF_DORMANT)) | |
deb2e523 TG |
1276 | return true; |
1277 | ||
1278 | return false; | |
1279 | } | |
1280 | ||
0e2fdb83 SS |
1281 | static int link_address_genmode_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1282 | int r; | |
1283 | ||
1284 | assert(link); | |
1285 | ||
9524014e DS |
1286 | link->setting_genmode = false; |
1287 | ||
0e2fdb83 SS |
1288 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1289 | return 1; | |
1290 | ||
1291 | r = sd_netlink_message_get_errno(m); | |
1292 | if (r < 0) | |
5ecb131d | 1293 | log_link_message_warning_errno(link, m, r, "Could not set address genmode for interface, ignoring"); |
9524014e DS |
1294 | else |
1295 | log_link_debug(link, "Setting address genmode done."); | |
1296 | ||
1297 | if (link->state == LINK_STATE_INITIALIZED) { | |
1298 | r = link_configure_continue(link); | |
1299 | if (r < 0) | |
1300 | link_enter_failed(link); | |
1301 | } | |
0e2fdb83 SS |
1302 | |
1303 | return 1; | |
1304 | } | |
1305 | ||
1306 | static int link_configure_addrgen_mode(Link *link) { | |
1307 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1308 | uint8_t ipv6ll_mode; | |
1309 | int r; | |
1310 | ||
1311 | assert(link); | |
1312 | assert(link->network); | |
1313 | assert(link->manager); | |
1314 | assert(link->manager->rtnl); | |
1315 | ||
9524014e | 1316 | if (!socket_ipv6_is_supported() || link->setting_genmode) |
9f6e82e6 YW |
1317 | return 0; |
1318 | ||
0e2fdb83 SS |
1319 | log_link_debug(link, "Setting address genmode for link"); |
1320 | ||
1321 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1322 | if (r < 0) | |
1323 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1324 | ||
1325 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); | |
1326 | if (r < 0) | |
1327 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
1328 | ||
1329 | r = sd_netlink_message_open_container(req, AF_INET6); | |
1330 | if (r < 0) | |
1331 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
1332 | ||
1333 | if (!link_ipv6ll_enabled(link)) | |
1334 | ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE; | |
6f6296b9 | 1335 | else if (link->network->ipv6ll_address_gen_mode < 0) { |
a6f1848a SS |
1336 | r = sysctl_read_ip_property(AF_INET6, link->ifname, "stable_secret", NULL); |
1337 | if (r < 0) { | |
1338 | /* The file may not exist. And even if it exists, when stable_secret is unset, | |
0e275271 YW |
1339 | * reading the file fails with ENOMEM when read_full_virtual_file(), which uses |
1340 | * read() as the backend, and EIO when read_one_line_file() which uses fgetc(). */ | |
1341 | log_link_debug_errno(link, r, "Failed to read sysctl property stable_secret, ignoring: %m"); | |
a6f1848a SS |
1342 | |
1343 | ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64; | |
1344 | } else | |
1345 | ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
1346 | } else | |
6f6296b9 | 1347 | ipv6ll_mode = link->network->ipv6ll_address_gen_mode; |
0e2fdb83 SS |
1348 | |
1349 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); | |
1350 | if (r < 0) | |
1351 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
1352 | ||
1353 | r = sd_netlink_message_close_container(req); | |
1354 | if (r < 0) | |
1355 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); | |
1356 | ||
1357 | r = sd_netlink_message_close_container(req); | |
1358 | if (r < 0) | |
1359 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
1360 | ||
1361 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_address_genmode_handler, | |
1362 | link_netlink_destroy_callback, link); | |
1363 | if (r < 0) | |
1364 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1365 | ||
1366 | link_ref(link); | |
9524014e | 1367 | link->setting_genmode = true; |
0e2fdb83 SS |
1368 | |
1369 | return 0; | |
1370 | } | |
1371 | ||
302a796f | 1372 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
dd3efc09 TG |
1373 | int r; |
1374 | ||
1746cf2a TG |
1375 | assert(link); |
1376 | ||
5da8149f | 1377 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1378 | return 1; |
1379 | ||
1c4baffc | 1380 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d | 1381 | if (r < 0) |
26d6b214 | 1382 | /* we warn but don't fail the link, as it may be brought up later */ |
5ecb131d | 1383 | log_link_message_warning_errno(link, m, r, "Could not bring up interface"); |
45ad2c13 | 1384 | |
f882c247 TG |
1385 | return 1; |
1386 | } | |
1387 | ||
f282ce20 | 1388 | int link_up(Link *link) { |
4afd3348 | 1389 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
f579559b TG |
1390 | int r; |
1391 | ||
f882c247 | 1392 | assert(link); |
c106cc36 | 1393 | assert(link->network); |
f882c247 TG |
1394 | assert(link->manager); |
1395 | assert(link->manager->rtnl); | |
1396 | ||
6a7a4e4d | 1397 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1398 | |
6a7a4e4d LP |
1399 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1400 | if (r < 0) | |
1401 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1402 | |
5d4795f3 | 1403 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1404 | if (r < 0) |
1405 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1406 | |
302a796f YW |
1407 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_up_handler, |
1408 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1409 | if (r < 0) |
1410 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1411 | |
b226d99b TG |
1412 | link_ref(link); |
1413 | ||
f882c247 TG |
1414 | return 0; |
1415 | } | |
1416 | ||
302a796f | 1417 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
0d4ad91d AR |
1418 | int r; |
1419 | ||
1420 | assert(link); | |
1421 | ||
1422 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1423 | return 1; | |
1424 | ||
1c4baffc | 1425 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1426 | if (r < 0) |
5ecb131d | 1427 | log_link_message_warning_errno(link, m, r, "Could not bring down interface"); |
0d4ad91d AR |
1428 | |
1429 | return 1; | |
1430 | } | |
1431 | ||
8e54db83 | 1432 | int link_down(Link *link, link_netlink_message_handler_t callback) { |
4afd3348 | 1433 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
0d4ad91d AR |
1434 | int r; |
1435 | ||
1436 | assert(link); | |
1437 | assert(link->manager); | |
1438 | assert(link->manager->rtnl); | |
1439 | ||
6a7a4e4d | 1440 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1441 | |
1442 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1443 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1444 | if (r < 0) |
1445 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1446 | |
1447 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1448 | if (r < 0) |
1449 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1450 | |
8e54db83 YW |
1451 | r = netlink_call_async(link->manager->rtnl, NULL, req, |
1452 | callback ?: link_down_handler, | |
302a796f | 1453 | link_netlink_destroy_callback, link); |
6a7a4e4d LP |
1454 | if (r < 0) |
1455 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1456 | |
1457 | link_ref(link); | |
1458 | ||
1459 | return 0; | |
1460 | } | |
1461 | ||
89fe6535 SS |
1462 | static int link_group_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1463 | int r; | |
1464 | ||
1465 | assert(link); | |
1466 | ||
1467 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1468 | return 1; | |
1469 | ||
1470 | r = sd_netlink_message_get_errno(m); | |
1471 | if (r < 0) | |
1472 | log_link_message_warning_errno(link, m, r, "Could not set group for the interface"); | |
1473 | ||
1474 | return 1; | |
1475 | } | |
1476 | ||
1477 | static int link_set_group(Link *link) { | |
1478 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1479 | int r; | |
1480 | ||
1481 | assert(link); | |
1482 | assert(link->network); | |
1483 | assert(link->manager); | |
1484 | assert(link->manager->rtnl); | |
1485 | ||
1486 | if (link->network->group <= 0) | |
1487 | return 0; | |
1488 | ||
1489 | log_link_debug(link, "Setting group"); | |
1490 | ||
1491 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1492 | if (r < 0) | |
1493 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1494 | ||
1495 | r = sd_netlink_message_append_u32(req, IFLA_GROUP, link->network->group); | |
1496 | if (r < 0) | |
1497 | return log_link_error_errno(link, r, "Could not set link group: %m"); | |
1498 | ||
1499 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_group_handler, | |
1500 | link_netlink_destroy_callback, link); | |
1501 | if (r < 0) | |
1502 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1503 | ||
1504 | link_ref(link); | |
1505 | ||
1506 | return 0; | |
1507 | } | |
1508 | ||
0d4ad91d AR |
1509 | static int link_handle_bound_to_list(Link *link) { |
1510 | Link *l; | |
0d4ad91d AR |
1511 | int r; |
1512 | bool required_up = false; | |
1513 | bool link_is_up = false; | |
1514 | ||
1515 | assert(link); | |
1516 | ||
1517 | if (hashmap_isempty(link->bound_to_links)) | |
1518 | return 0; | |
1519 | ||
1520 | if (link->flags & IFF_UP) | |
1521 | link_is_up = true; | |
1522 | ||
90e74a66 | 1523 | HASHMAP_FOREACH (l, link->bound_to_links) |
0d4ad91d AR |
1524 | if (link_has_carrier(l)) { |
1525 | required_up = true; | |
1526 | break; | |
1527 | } | |
1528 | ||
1529 | if (!required_up && link_is_up) { | |
8e54db83 | 1530 | r = link_down(link, NULL); |
0d4ad91d AR |
1531 | if (r < 0) |
1532 | return r; | |
1533 | } else if (required_up && !link_is_up) { | |
1534 | r = link_up(link); | |
1535 | if (r < 0) | |
1536 | return r; | |
1537 | } | |
1538 | ||
1539 | return 0; | |
1540 | } | |
1541 | ||
1542 | static int link_handle_bound_by_list(Link *link) { | |
0d4ad91d AR |
1543 | Link *l; |
1544 | int r; | |
1545 | ||
1546 | assert(link); | |
1547 | ||
1548 | if (hashmap_isempty(link->bound_by_links)) | |
1549 | return 0; | |
1550 | ||
90e74a66 | 1551 | HASHMAP_FOREACH (l, link->bound_by_links) { |
0d4ad91d AR |
1552 | r = link_handle_bound_to_list(l); |
1553 | if (r < 0) | |
1554 | return r; | |
1555 | } | |
1556 | ||
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1561 | int r; | |
1562 | ||
1563 | assert(link); | |
1564 | assert(carrier); | |
1565 | ||
1566 | if (link == carrier) | |
1567 | return 0; | |
1568 | ||
1569 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1570 | return 0; | |
1571 | ||
190b3b5c | 1572 | r = hashmap_ensure_put(h, NULL, INT_TO_PTR(carrier->ifindex), carrier); |
0d4ad91d AR |
1573 | if (r < 0) |
1574 | return r; | |
1575 | ||
9092113d YW |
1576 | link_dirty(link); |
1577 | ||
0d4ad91d AR |
1578 | return 0; |
1579 | } | |
1580 | ||
1581 | static int link_new_bound_by_list(Link *link) { | |
1582 | Manager *m; | |
1583 | Link *carrier; | |
0d4ad91d | 1584 | int r; |
0d4ad91d AR |
1585 | |
1586 | assert(link); | |
1587 | assert(link->manager); | |
1588 | ||
1589 | m = link->manager; | |
1590 | ||
90e74a66 | 1591 | HASHMAP_FOREACH(carrier, m->links) { |
0d4ad91d AR |
1592 | if (!carrier->network) |
1593 | continue; | |
1594 | ||
1595 | if (strv_isempty(carrier->network->bind_carrier)) | |
1596 | continue; | |
1597 | ||
191a3f16 | 1598 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname)) { |
0d4ad91d AR |
1599 | r = link_put_carrier(link, carrier, &link->bound_by_links); |
1600 | if (r < 0) | |
1601 | return r; | |
0d4ad91d AR |
1602 | } |
1603 | } | |
1604 | ||
90e74a66 | 1605 | HASHMAP_FOREACH(carrier, link->bound_by_links) { |
0d4ad91d AR |
1606 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
1607 | if (r < 0) | |
1608 | return r; | |
0d4ad91d AR |
1609 | } |
1610 | ||
1611 | return 0; | |
1612 | } | |
1613 | ||
1614 | static int link_new_bound_to_list(Link *link) { | |
1615 | Manager *m; | |
1616 | Link *carrier; | |
0d4ad91d | 1617 | int r; |
0d4ad91d AR |
1618 | |
1619 | assert(link); | |
1620 | assert(link->manager); | |
1621 | ||
1622 | if (!link->network) | |
1623 | return 0; | |
1624 | ||
1625 | if (strv_isempty(link->network->bind_carrier)) | |
1626 | return 0; | |
1627 | ||
1628 | m = link->manager; | |
1629 | ||
90e74a66 | 1630 | HASHMAP_FOREACH (carrier, m->links) { |
191a3f16 | 1631 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname)) { |
0d4ad91d AR |
1632 | r = link_put_carrier(link, carrier, &link->bound_to_links); |
1633 | if (r < 0) | |
1634 | return r; | |
0d4ad91d AR |
1635 | } |
1636 | } | |
1637 | ||
90e74a66 | 1638 | HASHMAP_FOREACH (carrier, link->bound_to_links) { |
0d4ad91d AR |
1639 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); |
1640 | if (r < 0) | |
1641 | return r; | |
0d4ad91d AR |
1642 | } |
1643 | ||
1644 | return 0; | |
1645 | } | |
1646 | ||
1647 | static int link_new_carrier_maps(Link *link) { | |
1648 | int r; | |
1649 | ||
1650 | r = link_new_bound_by_list(link); | |
1651 | if (r < 0) | |
1652 | return r; | |
1653 | ||
1654 | r = link_handle_bound_by_list(link); | |
1655 | if (r < 0) | |
1656 | return r; | |
1657 | ||
1658 | r = link_new_bound_to_list(link); | |
1659 | if (r < 0) | |
1660 | return r; | |
1661 | ||
1662 | r = link_handle_bound_to_list(link); | |
1663 | if (r < 0) | |
1664 | return r; | |
1665 | ||
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | static void link_free_bound_to_list(Link *link) { | |
9092113d | 1670 | bool updated = false; |
0d4ad91d | 1671 | Link *bound_to; |
0d4ad91d | 1672 | |
9092113d YW |
1673 | assert(link); |
1674 | ||
1675 | while ((bound_to = hashmap_steal_first(link->bound_to_links))) { | |
1676 | updated = true; | |
0d4ad91d AR |
1677 | |
1678 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1679 | link_dirty(bound_to); |
0d4ad91d AR |
1680 | } |
1681 | ||
9092113d YW |
1682 | if (updated) |
1683 | link_dirty(link); | |
1684 | ||
0d4ad91d AR |
1685 | return; |
1686 | } | |
1687 | ||
1688 | static void link_free_bound_by_list(Link *link) { | |
9092113d | 1689 | bool updated = false; |
0d4ad91d | 1690 | Link *bound_by; |
0d4ad91d | 1691 | |
9092113d YW |
1692 | assert(link); |
1693 | ||
1694 | while ((bound_by = hashmap_steal_first(link->bound_by_links))) { | |
1695 | updated = true; | |
0d4ad91d AR |
1696 | |
1697 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1698 | link_dirty(bound_by); |
0d4ad91d AR |
1699 | link_handle_bound_to_list(bound_by); |
1700 | } | |
1701 | } | |
1702 | ||
9092113d YW |
1703 | if (updated) |
1704 | link_dirty(link); | |
1705 | ||
0d4ad91d AR |
1706 | return; |
1707 | } | |
1708 | ||
1709 | static void link_free_carrier_maps(Link *link) { | |
0d4ad91d AR |
1710 | assert(link); |
1711 | ||
9092113d YW |
1712 | link_free_bound_to_list(link); |
1713 | link_free_bound_by_list(link); | |
0d4ad91d AR |
1714 | |
1715 | return; | |
1716 | } | |
1717 | ||
5f707e12 YW |
1718 | static int link_append_to_master(Link *link, NetDev *netdev) { |
1719 | Link *master; | |
1720 | int r; | |
1721 | ||
1722 | assert(link); | |
1723 | assert(netdev); | |
1724 | ||
1725 | r = link_get(link->manager, netdev->ifindex, &master); | |
1726 | if (r < 0) | |
1727 | return r; | |
1728 | ||
de7fef4b | 1729 | r = set_ensure_put(&master->slaves, NULL, link); |
38288f0b | 1730 | if (r <= 0) |
5f707e12 YW |
1731 | return r; |
1732 | ||
1733 | link_ref(link); | |
1734 | return 0; | |
1735 | } | |
1736 | ||
1737 | static void link_drop_from_master(Link *link, NetDev *netdev) { | |
1738 | Link *master; | |
1739 | ||
1740 | assert(link); | |
1741 | ||
1742 | if (!link->manager || !netdev) | |
1743 | return; | |
1744 | ||
1745 | if (link_get(link->manager, netdev->ifindex, &master) < 0) | |
1746 | return; | |
1747 | ||
1748 | link_unref(set_remove(master->slaves, link)); | |
1749 | } | |
1750 | ||
1751 | static void link_detach_from_manager(Link *link) { | |
1752 | if (!link || !link->manager) | |
1753 | return; | |
1754 | ||
1755 | link_unref(set_remove(link->manager->links_requesting_uuid, link)); | |
1756 | link_clean(link); | |
1757 | ||
1758 | /* The following must be called at last. */ | |
1759 | assert_se(hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)) == link); | |
1760 | link_unref(link); | |
1761 | } | |
1762 | ||
3be9d62a | 1763 | static void link_drop(Link *link) { |
0d4ad91d AR |
1764 | if (!link || link->state == LINK_STATE_LINGER) |
1765 | return; | |
1766 | ||
1767 | link_set_state(link, LINK_STATE_LINGER); | |
1768 | ||
1769 | link_free_carrier_maps(link); | |
1770 | ||
5f707e12 | 1771 | if (link->network) { |
c0267a59 | 1772 | link_drop_from_master(link, link->network->batadv); |
5f707e12 YW |
1773 | link_drop_from_master(link, link->network->bridge); |
1774 | link_drop_from_master(link, link->network->bond); | |
1775 | } | |
1776 | ||
6a7a4e4d | 1777 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1778 | |
db2f8a2e | 1779 | (void) unlink(link->state_file); |
c4397d94 | 1780 | link_detach_from_manager(link); |
0d4ad91d AR |
1781 | } |
1782 | ||
04952b25 | 1783 | int link_activate(Link *link) { |
f882c247 TG |
1784 | int r; |
1785 | ||
ef1ba606 | 1786 | assert(link); |
f5be5601 | 1787 | assert(link->network); |
dd3efc09 | 1788 | |
61135582 DS |
1789 | switch (link->network->activation_policy) { |
1790 | case ACTIVATION_POLICY_BOUND: | |
0d4ad91d AR |
1791 | r = link_handle_bound_to_list(link); |
1792 | if (r < 0) | |
1793 | return r; | |
61135582 DS |
1794 | break; |
1795 | case ACTIVATION_POLICY_UP: | |
1796 | if (link->activated) | |
1797 | break; | |
1798 | _fallthrough_; | |
1799 | case ACTIVATION_POLICY_ALWAYS_UP: | |
505f8da7 | 1800 | r = link_up(link); |
04952b25 | 1801 | if (r < 0) |
505f8da7 | 1802 | return r; |
61135582 DS |
1803 | break; |
1804 | case ACTIVATION_POLICY_DOWN: | |
1805 | if (link->activated) | |
1806 | break; | |
1807 | _fallthrough_; | |
1808 | case ACTIVATION_POLICY_ALWAYS_DOWN: | |
1809 | r = link_down(link, NULL); | |
04952b25 | 1810 | if (r < 0) |
61135582 | 1811 | return r; |
61135582 DS |
1812 | break; |
1813 | default: | |
1814 | break; | |
ef1ba606 | 1815 | } |
61135582 | 1816 | link->activated = true; |
f882c247 | 1817 | |
04952b25 YW |
1818 | return 0; |
1819 | } | |
1820 | ||
1821 | static int link_joined(Link *link) { | |
1822 | int r; | |
1823 | ||
1824 | assert(link); | |
1825 | assert(link->network); | |
1826 | ||
1827 | r = link_activate(link); | |
1828 | if (r < 0) | |
1829 | return r; | |
1830 | ||
9ed794a3 | 1831 | if (link->network->bridge) { |
e1853b00 | 1832 | r = link_set_bridge(link); |
6a7a4e4d LP |
1833 | if (r < 0) |
1834 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
45e11abf YW |
1835 | |
1836 | r = link_append_to_master(link, link->network->bridge); | |
1837 | if (r < 0) | |
1838 | log_link_error_errno(link, r, "Failed to add to bridge master's slave list: %m"); | |
e1853b00 SS |
1839 | } |
1840 | ||
eb64b435 | 1841 | if (link->network->bond) { |
7fcee284 | 1842 | r = link_set_bond(link); |
eb64b435 SS |
1843 | if (r < 0) |
1844 | log_link_error_errno(link, r, "Could not set bond message: %m"); | |
959f65d3 | 1845 | |
45e11abf | 1846 | r = link_append_to_master(link, link->network->bond); |
959f65d3 YW |
1847 | if (r < 0) |
1848 | log_link_error_errno(link, r, "Failed to add to bond master's slave list: %m"); | |
eb64b435 SS |
1849 | } |
1850 | ||
34d7f2c9 YW |
1851 | r = link_set_bridge_vlan(link); |
1852 | if (r < 0) | |
1853 | log_link_error_errno(link, r, "Could not set bridge vlan: %m"); | |
13b498f9 | 1854 | |
c1835a42 RM |
1855 | /* Skip setting up addresses until it gets carrier, |
1856 | or it would try to set addresses twice, | |
1857 | which is bad for non-idempotent steps. */ | |
dad2d78e | 1858 | if (!link_has_carrier(link) && !link->network->configure_without_carrier) |
c1835a42 RM |
1859 | return 0; |
1860 | ||
b425c3ae | 1861 | link_set_state(link, LINK_STATE_CONFIGURING); |
0e569a43 YW |
1862 | |
1863 | r = link_acquire_conf(link); | |
1864 | if (r < 0) | |
1865 | return r; | |
1866 | ||
682c65b0 | 1867 | return link_set_static_configs(link); |
02b59d57 TG |
1868 | } |
1869 | ||
302a796f | 1870 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
02b59d57 TG |
1871 | int r; |
1872 | ||
1746cf2a | 1873 | assert(link); |
ef1ba606 | 1874 | assert(link->network); |
34bf3c00 | 1875 | assert(link->enslaving > 0); |
02b59d57 | 1876 | |
313cefa1 | 1877 | link->enslaving--; |
52433f6b | 1878 | |
5da8149f | 1879 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1880 | return 1; |
1881 | ||
1c4baffc | 1882 | r = sd_netlink_message_get_errno(m); |
856f962c | 1883 | if (r < 0 && r != -EEXIST) { |
5ecb131d | 1884 | log_link_message_warning_errno(link, m, r, "Could not join netdev"); |
ef1ba606 TG |
1885 | link_enter_failed(link); |
1886 | return 1; | |
4ff296b0 YW |
1887 | } |
1888 | ||
1889 | log_link_debug(link, "Joined netdev"); | |
02b59d57 | 1890 | |
34bf3c00 | 1891 | if (link->enslaving == 0) { |
4ff296b0 YW |
1892 | r = link_joined(link); |
1893 | if (r < 0) | |
1894 | link_enter_failed(link); | |
34bf3c00 | 1895 | } |
02b59d57 TG |
1896 | |
1897 | return 1; | |
1898 | } | |
1899 | ||
3f265037 | 1900 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1901 | NetDev *netdev; |
02b59d57 TG |
1902 | int r; |
1903 | ||
1904 | assert(link); | |
1905 | assert(link->network); | |
bd08ce56 | 1906 | assert(link->state == LINK_STATE_INITIALIZED); |
02b59d57 | 1907 | |
289e6774 | 1908 | link_set_state(link, LINK_STATE_CONFIGURING); |
02b59d57 | 1909 | |
34bf3c00 | 1910 | link->enslaving = 0; |
02b59d57 | 1911 | |
d9c67ea1 | 1912 | if (link->network->bond) { |
cbff7170 TJ |
1913 | if (link->network->bond->state == NETDEV_STATE_READY && |
1914 | link->network->bond->ifindex == link->master_ifindex) | |
1915 | return link_joined(link); | |
1916 | ||
f2341e0a LP |
1917 | log_struct(LOG_DEBUG, |
1918 | LOG_LINK_INTERFACE(link), | |
1919 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 1920 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname)); |
f2341e0a | 1921 | |
34bf3c00 YW |
1922 | link->enslaving++; |
1923 | ||
f2341e0a | 1924 | r = netdev_join(link->network->bond, link, netdev_join_handler); |
52433f6b | 1925 | if (r < 0) { |
f2341e0a LP |
1926 | log_struct_errno(LOG_WARNING, r, |
1927 | LOG_LINK_INTERFACE(link), | |
1928 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 1929 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname)); |
52433f6b TG |
1930 | link_enter_failed(link); |
1931 | return r; | |
c0267a59 AW |
1932 | } |
1933 | } | |
1934 | ||
1935 | if (link->network->batadv) { | |
1936 | log_struct(LOG_DEBUG, | |
1937 | LOG_LINK_INTERFACE(link), | |
1938 | LOG_NETDEV_INTERFACE(link->network->batadv), | |
1939 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->batadv->ifname)); | |
1940 | ||
1941 | link->enslaving++; | |
1942 | ||
1943 | r = netdev_join(link->network->batadv, link, netdev_join_handler); | |
1944 | if (r < 0) { | |
1945 | log_struct_errno(LOG_WARNING, r, | |
1946 | LOG_LINK_INTERFACE(link), | |
1947 | LOG_NETDEV_INTERFACE(link->network->batadv), | |
1948 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->batadv->ifname)); | |
1949 | link_enter_failed(link); | |
1950 | return r; | |
52433f6b | 1951 | } |
0ad6148e MO |
1952 | } |
1953 | ||
d9c67ea1 | 1954 | if (link->network->bridge) { |
f2341e0a LP |
1955 | log_struct(LOG_DEBUG, |
1956 | LOG_LINK_INTERFACE(link), | |
1957 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 1958 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname)); |
f2341e0a | 1959 | |
34bf3c00 YW |
1960 | link->enslaving++; |
1961 | ||
f2341e0a | 1962 | r = netdev_join(link->network->bridge, link, netdev_join_handler); |
0ad6148e | 1963 | if (r < 0) { |
f2341e0a LP |
1964 | log_struct_errno(LOG_WARNING, r, |
1965 | LOG_LINK_INTERFACE(link), | |
1966 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 1967 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname)); |
0ad6148e MO |
1968 | link_enter_failed(link); |
1969 | return r; | |
1970 | } | |
52433f6b TG |
1971 | } |
1972 | ||
6cb955c6 AR |
1973 | if (link->network->vrf) { |
1974 | log_struct(LOG_DEBUG, | |
1975 | LOG_LINK_INTERFACE(link), | |
1976 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 ZJS |
1977 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->vrf->ifname)); |
1978 | ||
34bf3c00 YW |
1979 | link->enslaving++; |
1980 | ||
6cb955c6 AR |
1981 | r = netdev_join(link->network->vrf, link, netdev_join_handler); |
1982 | if (r < 0) { | |
1983 | log_struct_errno(LOG_WARNING, r, | |
1984 | LOG_LINK_INTERFACE(link), | |
1985 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 | 1986 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->vrf->ifname)); |
6cb955c6 AR |
1987 | link_enter_failed(link); |
1988 | return r; | |
1989 | } | |
6cb955c6 AR |
1990 | } |
1991 | ||
90e74a66 | 1992 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
7951dea2 | 1993 | |
2b6db913 YW |
1994 | if (netdev->ifindex > 0) |
1995 | /* Assume already enslaved. */ | |
a63e5daa | 1996 | continue; |
a63e5daa | 1997 | |
7033af49 YW |
1998 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_STACKED) |
1999 | continue; | |
2000 | ||
f2341e0a LP |
2001 | log_struct(LOG_DEBUG, |
2002 | LOG_LINK_INTERFACE(link), | |
2003 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 2004 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); |
f2341e0a | 2005 | |
34bf3c00 YW |
2006 | link->enslaving++; |
2007 | ||
f2341e0a | 2008 | r = netdev_join(netdev, link, netdev_join_handler); |
7951dea2 | 2009 | if (r < 0) { |
f2341e0a LP |
2010 | log_struct_errno(LOG_WARNING, r, |
2011 | LOG_LINK_INTERFACE(link), | |
2012 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 2013 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); |
326cb406 SS |
2014 | link_enter_failed(link); |
2015 | return r; | |
2016 | } | |
326cb406 SS |
2017 | } |
2018 | ||
34bf3c00 YW |
2019 | if (link->enslaving == 0) |
2020 | return link_joined(link); | |
2021 | ||
ef1ba606 TG |
2022 | return 0; |
2023 | } | |
2024 | ||
5e5b137a | 2025 | static int link_drop_foreign_config(Link *link) { |
0b81225e YW |
2026 | int k, r; |
2027 | ||
2028 | assert(link); | |
2029 | assert(link->manager); | |
5e5b137a | 2030 | |
e36d601c | 2031 | r = link_drop_foreign_routes(link); |
5e5b137a | 2032 | |
e36d601c | 2033 | k = link_drop_foreign_nexthops(link); |
0b81225e YW |
2034 | if (k < 0 && r >= 0) |
2035 | r = k; | |
2036 | ||
e36d601c | 2037 | k = link_drop_foreign_addresses(link); |
0b81225e YW |
2038 | if (k < 0 && r >= 0) |
2039 | r = k; | |
d1bdafd2 | 2040 | |
e36d601c | 2041 | k = link_drop_foreign_neighbors(link); |
25b82b6e YW |
2042 | if (k < 0 && r >= 0) |
2043 | r = k; | |
2044 | ||
0b81225e YW |
2045 | k = manager_drop_foreign_routing_policy_rules(link->manager); |
2046 | if (k < 0 && r >= 0) | |
2047 | r = k; | |
2048 | ||
2049 | return r; | |
5e5b137a TG |
2050 | } |
2051 | ||
3104883d | 2052 | static int link_drop_config(Link *link) { |
0b81225e YW |
2053 | int k, r; |
2054 | ||
2055 | assert(link); | |
2056 | assert(link->manager); | |
3104883d | 2057 | |
e36d601c | 2058 | r = link_drop_routes(link); |
3104883d | 2059 | |
e36d601c | 2060 | k = link_drop_nexthops(link); |
0b81225e YW |
2061 | if (k < 0 && r >= 0) |
2062 | r = k; | |
d1bdafd2 | 2063 | |
e36d601c | 2064 | k = link_drop_addresses(link); |
0b81225e YW |
2065 | if (k < 0 && r >= 0) |
2066 | r = k; | |
2067 | ||
e36d601c | 2068 | k = link_drop_neighbors(link); |
25b82b6e YW |
2069 | if (k < 0 && r >= 0) |
2070 | r = k; | |
2071 | ||
0b81225e YW |
2072 | k = manager_drop_routing_policy_rules(link->manager, link); |
2073 | if (k < 0 && r >= 0) | |
2074 | r = k; | |
3104883d | 2075 | |
c69305ff LP |
2076 | ndisc_flush(link); |
2077 | ||
0b81225e | 2078 | return r; |
3104883d SS |
2079 | } |
2080 | ||
256c75fd | 2081 | int link_configure(Link *link) { |
4ecdcb07 YW |
2082 | int r; |
2083 | ||
ef1ba606 | 2084 | assert(link); |
b22d8a00 | 2085 | assert(link->network); |
bd08ce56 | 2086 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 2087 | |
34658df2 | 2088 | r = link_configure_traffic_control(link); |
4ecdcb07 YW |
2089 | if (r < 0) |
2090 | return r; | |
2091 | ||
518cd6b5 SS |
2092 | r = link_configure_sr_iov(link); |
2093 | if (r < 0) | |
2094 | return r; | |
2095 | ||
500b96eb | 2096 | if (link->iftype == ARPHRD_CAN) |
600b7898 | 2097 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ |
93ea7750 | 2098 | return link_configure_can(link); |
92c918b0 | 2099 | |
5e0534f1 | 2100 | r = link_set_sysctl(link); |
b69c3180 SS |
2101 | if (r < 0) |
2102 | return r; | |
8749cbcd | 2103 | |
e16e4b3b DS |
2104 | r = link_set_mac(link); |
2105 | if (r < 0) | |
2106 | return r; | |
2107 | ||
2108 | r = link_set_nomaster(link); | |
2109 | if (r < 0) | |
2110 | return r; | |
2111 | ||
99d2baa2 SS |
2112 | r = link_set_flags(link); |
2113 | if (r < 0) | |
2114 | return r; | |
2115 | ||
89fe6535 SS |
2116 | r = link_set_group(link); |
2117 | if (r < 0) | |
2118 | return r; | |
2119 | ||
2ffd6d73 YW |
2120 | r = ipv4ll_configure(link); |
2121 | if (r < 0) | |
2122 | return r; | |
64b21ece | 2123 | |
2ffd6d73 YW |
2124 | r = dhcp4_configure(link); |
2125 | if (r < 0) | |
2126 | return r; | |
eb34d4af | 2127 | |
2ffd6d73 YW |
2128 | r = dhcp6_configure(link); |
2129 | if (r < 0) | |
2130 | return r; | |
f5a8c43f | 2131 | |
2ffd6d73 YW |
2132 | r = ndisc_configure(link); |
2133 | if (r < 0) | |
2134 | return r; | |
4138fb2c | 2135 | |
086b8853 YW |
2136 | r = radv_configure(link); |
2137 | if (r < 0) | |
2138 | return r; | |
7465dd22 | 2139 | |
2ffd6d73 YW |
2140 | r = link_lldp_rx_configure(link); |
2141 | if (r < 0) | |
2142 | return r; | |
ce43e484 | 2143 | |
f6fcc1c2 | 2144 | r = link_configure_mtu(link); |
40288ece YW |
2145 | if (r < 0) |
2146 | return r; | |
44b598a1 | 2147 | |
9f6e82e6 YW |
2148 | r = link_configure_addrgen_mode(link); |
2149 | if (r < 0) | |
2150 | return r; | |
0e2fdb83 | 2151 | |
3a390124 DS |
2152 | return link_configure_continue(link); |
2153 | } | |
2154 | ||
2155 | /* The configuration continues in this separate function, instead of | |
2156 | * including this in the above link_configure() function, for two | |
2157 | * reasons: | |
2158 | * 1) some devices reset the link when the mtu is set, which caused | |
2159 | * an infinite loop here in networkd; see: | |
2160 | * https://github.com/systemd/systemd/issues/6593 | |
2161 | * https://github.com/systemd/systemd/issues/9831 | |
2162 | * 2) if ipv6ll is disabled, then bringing the interface up must be | |
2163 | * delayed until after we get confirmation from the kernel that | |
2164 | * the addr_gen_mode parameter has been set (via netlink), see: | |
2165 | * https://github.com/systemd/systemd/issues/13882 | |
2166 | */ | |
2167 | static int link_configure_continue(Link *link) { | |
55dc8c4a YW |
2168 | int r; |
2169 | ||
2170 | assert(link); | |
2171 | assert(link->network); | |
bd08ce56 | 2172 | assert(link->state == LINK_STATE_INITIALIZED); |
55dc8c4a | 2173 | |
9524014e | 2174 | if (link->setting_mtu || link->setting_genmode) |
55dc8c4a YW |
2175 | return 0; |
2176 | ||
4c649652 DS |
2177 | /* Drop foreign config, but ignore loopback or critical devices. |
2178 | * We do not want to remove loopback address or addresses used for root NFS. */ | |
2179 | if (!(link->flags & IFF_LOOPBACK) && | |
2180 | link->network->keep_configuration != KEEP_CONFIGURATION_YES) { | |
2181 | r = link_drop_foreign_config(link); | |
2182 | if (r < 0) | |
2183 | return r; | |
2184 | } | |
2185 | ||
d236718c DS |
2186 | /* The kernel resets ipv6 mtu after changing device mtu; |
2187 | * we must set this here, after we've set device mtu */ | |
2188 | r = link_set_ipv6_mtu(link); | |
2189 | if (r < 0) | |
5e0534f1 | 2190 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface, ignoring: %m"); |
d236718c | 2191 | |
3f265037 | 2192 | return link_enter_join_netdev(link); |
505f8da7 TG |
2193 | } |
2194 | ||
572b21d9 | 2195 | static int link_reconfigure_internal(Link *link, sd_netlink_message *m, bool force) { |
8bceafa7 | 2196 | _cleanup_strv_free_ char **s = NULL; |
ad932b15 YW |
2197 | Network *network; |
2198 | int r; | |
2199 | ||
8bceafa7 | 2200 | assert(m); |
572b21d9 | 2201 | |
8bceafa7 YW |
2202 | r = sd_netlink_message_get_errno(m); |
2203 | if (r < 0) | |
2204 | return r; | |
572b21d9 | 2205 | |
8bceafa7 YW |
2206 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); |
2207 | if (r < 0 && r != -ENODATA) | |
2208 | return r; | |
572b21d9 | 2209 | |
8bceafa7 | 2210 | strv_free_and_replace(link->alternative_names, s); |
572b21d9 | 2211 | |
c643bda5 YW |
2212 | r = network_get(link->manager, link->iftype, link->sd_device, |
2213 | link->ifname, link->alternative_names, link->driver, | |
b8162cd2 | 2214 | &link->hw_addr.addr.ether, &link->permanent_mac, |
c643bda5 | 2215 | link->wlan_iftype, link->ssid, &link->bssid, &network); |
ad932b15 YW |
2216 | if (r == -ENOENT) { |
2217 | link_enter_unmanaged(link); | |
2218 | return 0; | |
2219 | } else if (r == 0 && network->unmanaged) { | |
2220 | link_enter_unmanaged(link); | |
2221 | return 0; | |
2222 | } else if (r < 0) | |
2223 | return r; | |
2224 | ||
99b8517c | 2225 | if (link->network == network && !force) |
ad932b15 YW |
2226 | return 0; |
2227 | ||
2228 | log_link_info(link, "Re-configuring with %s", network->filename); | |
2229 | ||
2230 | /* Dropping old .network file */ | |
2a99eed0 | 2231 | r = link_stop_engines(link, false); |
572b21d9 | 2232 | if (r < 0) |
ad932b15 | 2233 | return r; |
ad932b15 | 2234 | |
ad932b15 YW |
2235 | r = link_drop_config(link); |
2236 | if (r < 0) | |
2237 | return r; | |
2238 | ||
2c7b826d | 2239 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
942cf4b8 | 2240 | log_link_debug(link, "State is %s, dropping foreign config", link_state_to_string(link->state)); |
ad932b15 YW |
2241 | r = link_drop_foreign_config(link); |
2242 | if (r < 0) | |
2243 | return r; | |
2244 | } | |
2245 | ||
2246 | link_free_carrier_maps(link); | |
2247 | link_free_engines(link); | |
2248 | link->network = network_unref(link->network); | |
59c31eba | 2249 | link_unref(set_remove(link->manager->links_requesting_uuid, link)); |
ad932b15 YW |
2250 | |
2251 | /* Then, apply new .network file */ | |
9092113d YW |
2252 | link->network = network_ref(network); |
2253 | link_dirty(link); | |
ad932b15 YW |
2254 | |
2255 | r = link_new_carrier_maps(link); | |
2256 | if (r < 0) | |
2257 | return r; | |
2258 | ||
2259 | link_set_state(link, LINK_STATE_INITIALIZED); | |
61135582 | 2260 | link->activated = false; |
ad932b15 | 2261 | |
ad932b15 YW |
2262 | r = link_configure(link); |
2263 | if (r < 0) | |
2264 | return r; | |
2265 | ||
2266 | return 0; | |
2267 | } | |
2268 | ||
572b21d9 YW |
2269 | static int link_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
2270 | int r; | |
2271 | ||
2272 | r = link_reconfigure_internal(link, m, false); | |
2273 | if (r < 0) | |
2274 | link_enter_failed(link); | |
2275 | ||
2276 | return 1; | |
2277 | } | |
2278 | ||
2279 | static int link_force_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
2280 | int r; | |
2281 | ||
2282 | r = link_reconfigure_internal(link, m, true); | |
2283 | if (r < 0) | |
2284 | link_enter_failed(link); | |
2285 | ||
2286 | return 1; | |
2287 | } | |
2288 | ||
2289 | int link_reconfigure(Link *link, bool force) { | |
2290 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
2291 | int r; | |
2292 | ||
8bceafa7 | 2293 | /* When link in pending or initialized state, then link_configure() will be called. To prevent |
f8dd4077 ZJS |
2294 | * the function from being called multiple times simultaneously, refuse to reconfigure the |
2295 | * interface in these cases. */ | |
8bceafa7 | 2296 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED, LINK_STATE_LINGER)) |
f8dd4077 | 2297 | return 0; /* 0 means no-op. */ |
2c0d7ed3 | 2298 | |
572b21d9 YW |
2299 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2300 | link->ifindex); | |
2301 | if (r < 0) | |
2302 | return r; | |
2303 | ||
2304 | r = netlink_call_async(link->manager->rtnl, NULL, req, | |
2305 | force ? link_force_reconfigure_handler : link_reconfigure_handler, | |
2306 | link_netlink_destroy_callback, link); | |
2307 | if (r < 0) | |
2308 | return r; | |
2309 | ||
2310 | link_ref(link); | |
2311 | ||
8bceafa7 | 2312 | return 1; /* 1 means the interface will be reconfigured. */ |
572b21d9 YW |
2313 | } |
2314 | ||
e6bf7774 | 2315 | static int link_initialized_and_synced(Link *link) { |
505f8da7 | 2316 | Network *network; |
505f8da7 TG |
2317 | int r; |
2318 | ||
2319 | assert(link); | |
2320 | assert(link->ifname); | |
2321 | assert(link->manager); | |
2322 | ||
bd08ce56 YW |
2323 | /* We may get called either from the asynchronous netlink callback, |
2324 | * or directly for link_add() if running in a container. See link_add(). */ | |
2325 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) | |
4232cf04 | 2326 | return 0; |
505f8da7 | 2327 | |
6a7a4e4d | 2328 | log_link_debug(link, "Link state is up-to-date"); |
bd08ce56 | 2329 | link_set_state(link, LINK_STATE_INITIALIZED); |
505f8da7 | 2330 | |
0d4ad91d AR |
2331 | r = link_new_bound_by_list(link); |
2332 | if (r < 0) | |
2333 | return r; | |
2334 | ||
2335 | r = link_handle_bound_by_list(link); | |
2336 | if (r < 0) | |
2337 | return r; | |
2338 | ||
c4a03a56 | 2339 | if (!link->network) { |
0894cfe4 | 2340 | r = wifi_get_info(link); |
8d968fdd YW |
2341 | if (r < 0) |
2342 | return r; | |
2343 | ||
c643bda5 YW |
2344 | r = network_get(link->manager, link->iftype, link->sd_device, |
2345 | link->ifname, link->alternative_names, link->driver, | |
b8162cd2 | 2346 | &link->hw_addr.addr.ether, &link->permanent_mac, |
c643bda5 | 2347 | link->wlan_iftype, link->ssid, &link->bssid, &network); |
c4a03a56 TG |
2348 | if (r == -ENOENT) { |
2349 | link_enter_unmanaged(link); | |
4232cf04 | 2350 | return 0; |
a09dc546 DM |
2351 | } else if (r == 0 && network->unmanaged) { |
2352 | link_enter_unmanaged(link); | |
2353 | return 0; | |
c4a03a56 TG |
2354 | } else if (r < 0) |
2355 | return r; | |
505f8da7 | 2356 | |
c4a03a56 TG |
2357 | if (link->flags & IFF_LOOPBACK) { |
2358 | if (network->link_local != ADDRESS_FAMILY_NO) | |
2359 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 2360 | |
c4a03a56 TG |
2361 | if (network->dhcp != ADDRESS_FAMILY_NO) |
2362 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 2363 | |
c4a03a56 TG |
2364 | if (network->dhcp_server) |
2365 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
2366 | } | |
bd2efe92 | 2367 | |
9092113d YW |
2368 | link->network = network_ref(network); |
2369 | link_dirty(link); | |
c4a03a56 | 2370 | } |
505f8da7 | 2371 | |
0d4ad91d AR |
2372 | r = link_new_bound_to_list(link); |
2373 | if (r < 0) | |
2374 | return r; | |
2375 | ||
a748b692 TG |
2376 | r = link_configure(link); |
2377 | if (r < 0) | |
2378 | return r; | |
2379 | ||
4232cf04 | 2380 | return 0; |
505f8da7 TG |
2381 | } |
2382 | ||
302a796f | 2383 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
572b21d9 | 2384 | _cleanup_strv_free_ char **s = NULL; |
4ff296b0 YW |
2385 | int r; |
2386 | ||
572b21d9 YW |
2387 | r = sd_netlink_message_get_errno(m); |
2388 | if (r < 0) { | |
40681e5c | 2389 | log_link_warning_errno(link, r, "Failed to wait for the interface to be initialized: %m"); |
572b21d9 YW |
2390 | link_enter_failed(link); |
2391 | return 0; | |
2392 | } | |
2393 | ||
2394 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); | |
2395 | if (r < 0 && r != -ENODATA) { | |
2396 | link_enter_failed(link); | |
2397 | return 0; | |
2398 | } | |
2399 | ||
2400 | strv_free_and_replace(link->alternative_names, s); | |
2401 | ||
4ff296b0 YW |
2402 | r = link_initialized_and_synced(link); |
2403 | if (r < 0) | |
2404 | link_enter_failed(link); | |
e6bf7774 YW |
2405 | return 1; |
2406 | } | |
2407 | ||
3be9d62a | 2408 | static int link_initialized(Link *link, sd_device *device) { |
4afd3348 | 2409 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f561e8e TG |
2410 | int r; |
2411 | ||
2412 | assert(link); | |
2413 | assert(link->manager); | |
2414 | assert(link->manager->rtnl); | |
2415 | assert(device); | |
2416 | ||
8434fd5c | 2417 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2418 | return 0; |
2419 | ||
51517f9e | 2420 | if (link->sd_device) |
679b3605 TG |
2421 | return 0; |
2422 | ||
79008bdd | 2423 | log_link_debug(link, "udev initialized link"); |
bd08ce56 | 2424 | link_set_state(link, LINK_STATE_INITIALIZED); |
4f561e8e | 2425 | |
51517f9e | 2426 | link->sd_device = sd_device_ref(device); |
4f561e8e | 2427 | |
3c9b8860 TG |
2428 | /* udev has initialized the link, but we don't know if we have yet |
2429 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2430 | * when it returns we know that the pending NEWLINKs have already been | |
2431 | * processed and that we are up-to-date */ | |
4f561e8e | 2432 | |
3c9b8860 TG |
2433 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2434 | link->ifindex); | |
4f561e8e TG |
2435 | if (r < 0) |
2436 | return r; | |
2437 | ||
302a796f YW |
2438 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_initialized_handler, |
2439 | link_netlink_destroy_callback, link); | |
4f561e8e TG |
2440 | if (r < 0) |
2441 | return r; | |
2442 | ||
5da8149f TG |
2443 | link_ref(link); |
2444 | ||
4f561e8e TG |
2445 | return 0; |
2446 | } | |
2447 | ||
3be9d62a | 2448 | static int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
51517f9e | 2449 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
505f8da7 | 2450 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; |
51517f9e | 2451 | Link *link; |
5a937ea2 | 2452 | int r; |
505f8da7 TG |
2453 | |
2454 | assert(m); | |
fbbeb65a | 2455 | assert(m->rtnl); |
505f8da7 TG |
2456 | assert(message); |
2457 | assert(ret); | |
2458 | ||
2459 | r = link_new(m, message, ret); | |
2460 | if (r < 0) | |
2461 | return r; | |
2462 | ||
2463 | link = *ret; | |
2464 | ||
6a7a4e4d | 2465 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2466 | |
bf331d87 YW |
2467 | if (path_is_read_only_fs("/sys") <= 0) { |
2468 | /* udev should be around */ | |
ae06ab10 | 2469 | sprintf(ifindex_str, "n%d", link->ifindex); |
51517f9e YW |
2470 | r = sd_device_new_from_device_id(&device, ifindex_str); |
2471 | if (r < 0) { | |
83e7c37b | 2472 | log_link_debug_errno(link, r, "Could not find device, waiting for device initialization: %m"); |
4d59e14f | 2473 | return 0; |
5c416fc4 | 2474 | } |
505f8da7 | 2475 | |
5a937ea2 | 2476 | r = sd_device_get_is_initialized(device); |
51517f9e | 2477 | if (r < 0) { |
bf331d87 | 2478 | log_link_warning_errno(link, r, "Could not determine whether the device is initialized: %m"); |
51517f9e YW |
2479 | goto failed; |
2480 | } | |
5a937ea2 | 2481 | if (r == 0) { |
505f8da7 | 2482 | /* not yet ready */ |
79008bdd | 2483 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2484 | return 0; |
3c4cb064 | 2485 | } |
505f8da7 | 2486 | |
299ad32d YW |
2487 | r = device_is_renaming(device); |
2488 | if (r < 0) { | |
bf331d87 | 2489 | log_link_warning_errno(link, r, "Failed to determine the device is being renamed: %m"); |
299ad32d YW |
2490 | goto failed; |
2491 | } | |
2492 | if (r > 0) { | |
bf331d87 | 2493 | log_link_debug(link, "Interface is being renamed, pending initialization."); |
299ad32d YW |
2494 | return 0; |
2495 | } | |
2496 | ||
4f561e8e TG |
2497 | r = link_initialized(link, device); |
2498 | if (r < 0) | |
5c416fc4 | 2499 | goto failed; |
4f561e8e | 2500 | } else { |
e6bf7774 | 2501 | r = link_initialized_and_synced(link); |
4f561e8e | 2502 | if (r < 0) |
5c416fc4 | 2503 | goto failed; |
4f561e8e | 2504 | } |
505f8da7 | 2505 | |
a748b692 | 2506 | return 0; |
5c416fc4 TG |
2507 | failed: |
2508 | link_enter_failed(link); | |
2509 | return r; | |
a748b692 TG |
2510 | } |
2511 | ||
c601ebf7 | 2512 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
e7ab854c TG |
2513 | int r; |
2514 | ||
2515 | assert(link); | |
2516 | ||
2517 | log_link_info(link, "Gained IPv6LL"); | |
2518 | ||
c601ebf7 | 2519 | link->ipv6ll_address = *address; |
e7ab854c TG |
2520 | link_check_ready(link); |
2521 | ||
b9ea3d2e | 2522 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
e7ab854c TG |
2523 | r = link_acquire_ipv6_conf(link); |
2524 | if (r < 0) { | |
2525 | link_enter_failed(link); | |
2526 | return r; | |
2527 | } | |
2528 | } | |
2529 | ||
2530 | return 0; | |
2531 | } | |
2532 | ||
3be9d62a YW |
2533 | int manager_udev_process_link(sd_device_monitor *monitor, sd_device *device, void *userdata) { |
2534 | sd_device_action_t action; | |
2535 | Manager *m = userdata; | |
2536 | Link *link = NULL; | |
2537 | int r, ifindex; | |
2538 | ||
2539 | assert(m); | |
2540 | assert(device); | |
2541 | ||
2542 | r = sd_device_get_action(device, &action); | |
2543 | if (r < 0) { | |
2544 | log_device_debug_errno(device, r, "Failed to get udev action, ignoring device: %m"); | |
2545 | return 0; | |
2546 | } | |
2547 | ||
2548 | /* Ignore the "remove" uevent — let's remove a device only if rtnetlink says so. All other uevents | |
2549 | * are "positive" events in some form, i.e. inform us about a changed or new network interface, that | |
2550 | * still exists — and we are interested in that. */ | |
2551 | if (action == SD_DEVICE_REMOVE) | |
2552 | return 0; | |
2553 | ||
2554 | r = sd_device_get_ifindex(device, &ifindex); | |
2555 | if (r < 0) { | |
2556 | log_device_debug_errno(device, r, "Ignoring udev %s event for device without ifindex or with invalid ifindex: %m", | |
2557 | device_action_to_string(action)); | |
2558 | return 0; | |
2559 | } | |
2560 | ||
2561 | r = device_is_renaming(device); | |
2562 | if (r < 0) { | |
2563 | log_device_error_errno(device, r, "Failed to determine the device is renamed or not, ignoring '%s' uevent: %m", | |
2564 | device_action_to_string(action)); | |
2565 | return 0; | |
2566 | } | |
2567 | if (r > 0) { | |
2568 | log_device_debug(device, "Interface is under renaming, wait for the interface to be renamed."); | |
2569 | return 0; | |
2570 | } | |
2571 | ||
2572 | r = link_get(m, ifindex, &link); | |
2573 | if (r < 0) { | |
2574 | if (r != -ENODEV) | |
2575 | log_debug_errno(r, "Failed to get link from ifindex %i, ignoring: %m", ifindex); | |
2576 | return 0; | |
2577 | } | |
2578 | ||
2579 | (void) link_initialized(link, device); | |
2580 | ||
2581 | return 0; | |
2582 | } | |
2583 | ||
9c0a72f9 TG |
2584 | static int link_carrier_gained(Link *link) { |
2585 | int r; | |
2586 | ||
2587 | assert(link); | |
2588 | ||
600b7898 YW |
2589 | if (link->iftype == ARPHRD_CAN) |
2590 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
2591 | return link_handle_bound_by_list(link); | |
2592 | ||
0894cfe4 | 2593 | r = wifi_get_info(link); |
8d968fdd YW |
2594 | if (r < 0) |
2595 | return r; | |
2596 | if (r > 0) { | |
8bceafa7 | 2597 | r = link_reconfigure(link, false); |
572b21d9 YW |
2598 | if (r < 0) { |
2599 | link_enter_failed(link); | |
8d968fdd | 2600 | return r; |
572b21d9 | 2601 | } |
8d968fdd YW |
2602 | } |
2603 | ||
b9ea3d2e | 2604 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
9c0a72f9 TG |
2605 | r = link_acquire_conf(link); |
2606 | if (r < 0) { | |
2607 | link_enter_failed(link); | |
2608 | return r; | |
2609 | } | |
6fc25497 | 2610 | |
b425c3ae | 2611 | link_set_state(link, LINK_STATE_CONFIGURING); |
682c65b0 | 2612 | r = link_set_static_configs(link); |
6fc25497 SS |
2613 | if (r < 0) |
2614 | return r; | |
9c0a72f9 TG |
2615 | } |
2616 | ||
0d4ad91d AR |
2617 | r = link_handle_bound_by_list(link); |
2618 | if (r < 0) | |
2619 | return r; | |
2620 | ||
1f241589 YW |
2621 | if (!link->bridge_mdb_configured) { |
2622 | r = link_set_bridge_mdb(link); | |
2623 | if (r < 0) | |
2624 | return r; | |
2625 | } | |
2626 | ||
2627 | if (streq_ptr(link->kind, "bridge")) { | |
2628 | Link *slave; | |
2629 | ||
2630 | SET_FOREACH(slave, link->slaves) { | |
2631 | if (slave->bridge_mdb_configured) | |
2632 | continue; | |
2633 | ||
2634 | r = link_set_bridge_mdb(slave); | |
2635 | if (r < 0) | |
2636 | link_enter_failed(slave); | |
2637 | } | |
2638 | } | |
3db468ea | 2639 | |
9c0a72f9 TG |
2640 | return 0; |
2641 | } | |
2642 | ||
2643 | static int link_carrier_lost(Link *link) { | |
2644 | int r; | |
2645 | ||
2646 | assert(link); | |
2647 | ||
25e992ba | 2648 | if (link->network && link->network->ignore_carrier_loss) |
93b4dab5 SS |
2649 | return 0; |
2650 | ||
600b7898 YW |
2651 | if (link->iftype == ARPHRD_CAN) |
2652 | /* let's shortcut things for CAN which doesn't need most of what's done below. */ | |
2653 | return link_handle_bound_by_list(link); | |
2654 | ||
fbdb6605 | 2655 | /* Some devices reset itself while setting the MTU. This causes the DHCP client fall into a loop. |
55dc8c4a YW |
2656 | * setting_mtu keep track whether the device got reset because of setting MTU and does not drop the |
2657 | * configuration and stop the clients as well. */ | |
97e7fb39 SS |
2658 | if (link->setting_mtu) |
2659 | return 0; | |
2660 | ||
2a99eed0 | 2661 | r = link_stop_engines(link, false); |
9c0a72f9 TG |
2662 | if (r < 0) { |
2663 | link_enter_failed(link); | |
2664 | return r; | |
2665 | } | |
2666 | ||
3104883d SS |
2667 | r = link_drop_config(link); |
2668 | if (r < 0) | |
2669 | return r; | |
2670 | ||
2c7b826d | 2671 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
942cf4b8 | 2672 | log_link_debug(link, "State is %s, dropping foreign config", link_state_to_string(link->state)); |
c436d553 MM |
2673 | r = link_drop_foreign_config(link); |
2674 | if (r < 0) | |
2675 | return r; | |
2676 | } | |
3104883d | 2677 | |
0d4ad91d AR |
2678 | r = link_handle_bound_by_list(link); |
2679 | if (r < 0) | |
2680 | return r; | |
2681 | ||
9c0a72f9 TG |
2682 | return 0; |
2683 | } | |
2684 | ||
2685 | int link_carrier_reset(Link *link) { | |
2686 | int r; | |
2687 | ||
2688 | assert(link); | |
2689 | ||
2690 | if (link_has_carrier(link)) { | |
2691 | r = link_carrier_lost(link); | |
2692 | if (r < 0) | |
2693 | return r; | |
2694 | ||
2695 | r = link_carrier_gained(link); | |
2696 | if (r < 0) | |
2697 | return r; | |
2698 | ||
6a7a4e4d | 2699 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2700 | } |
2701 | ||
2702 | return 0; | |
2703 | } | |
2704 | ||
d236718c DS |
2705 | static int link_admin_state_up(Link *link) { |
2706 | int r; | |
2707 | ||
61135582 DS |
2708 | assert(link); |
2709 | ||
3be9d62a YW |
2710 | /* This is called every time an interface admin state changes to up; |
2711 | * specifically, when IFF_UP flag changes from unset to set. */ | |
2712 | ||
61135582 DS |
2713 | if (!link->network) |
2714 | return 0; | |
2715 | ||
2716 | if (link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_DOWN) { | |
2717 | log_link_info(link, "ActivationPolicy is \"always-off\", forcing link down"); | |
2718 | return link_down(link, NULL); | |
2719 | } | |
2720 | ||
d236718c DS |
2721 | /* We set the ipv6 mtu after the device mtu, but the kernel resets |
2722 | * ipv6 mtu on NETDEV_UP, so we need to reset it. The check for | |
2723 | * ipv6_mtu_set prevents this from trying to set it too early before | |
2724 | * the link->network has been setup; we only need to reset it | |
2725 | * here if we've already set it during normal initialization. */ | |
2726 | if (link->ipv6_mtu_set) { | |
2727 | r = link_set_ipv6_mtu(link); | |
2728 | if (r < 0) | |
2729 | return r; | |
2730 | } | |
2731 | ||
2732 | return 0; | |
2733 | } | |
2734 | ||
61135582 | 2735 | static int link_admin_state_down(Link *link) { |
61135582 DS |
2736 | assert(link); |
2737 | ||
2738 | if (!link->network) | |
2739 | return 0; | |
2740 | ||
2741 | if (link->network->activation_policy == ACTIVATION_POLICY_ALWAYS_UP) { | |
36161cba YW |
2742 | if (streq_ptr(link->kind, "can") && !link->can_configured) |
2743 | /* CAN device needs to be down on configure. */ | |
2744 | return 0; | |
2745 | ||
61135582 DS |
2746 | log_link_info(link, "ActivationPolicy is \"always-on\", forcing link up"); |
2747 | return link_up(link); | |
2748 | } | |
2749 | ||
2750 | return 0; | |
2751 | } | |
2752 | ||
3be9d62a | 2753 | static int link_update(Link *link, sd_netlink_message *m) { |
572b21d9 | 2754 | _cleanup_strv_free_ char **s = NULL; |
b8162cd2 | 2755 | hw_addr_data hw_addr; |
ca4e095a | 2756 | const char *ifname; |
afe7fd56 | 2757 | uint32_t mtu; |
d236718c | 2758 | bool had_carrier, carrier_gained, carrier_lost, link_was_admin_up; |
bb262ef0 | 2759 | int old_master, r; |
22936833 | 2760 | |
dd3efc09 | 2761 | assert(link); |
b8941f74 | 2762 | assert(link->ifname); |
22936833 TG |
2763 | assert(m); |
2764 | ||
7619683b | 2765 | if (link->state == LINK_STATE_LINGER) { |
5238e957 | 2766 | log_link_info(link, "Link re-added"); |
289e6774 | 2767 | link_set_state(link, LINK_STATE_CONFIGURING); |
0d4ad91d AR |
2768 | |
2769 | r = link_new_carrier_maps(link); | |
2770 | if (r < 0) | |
2771 | return r; | |
7619683b TG |
2772 | } |
2773 | ||
1c4baffc | 2774 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2775 | if (r >= 0 && !streq(ifname, link->ifname)) { |
30de2b89 | 2776 | Manager *manager = link->manager; |
b8941f74 | 2777 | |
30de2b89 | 2778 | log_link_info(link, "Interface name change detected, %s has been renamed to %s.", link->ifname, ifname); |
0d4ad91d | 2779 | |
30de2b89 YW |
2780 | link_drop(link); |
2781 | r = link_add(manager, m, &link); | |
2782 | if (r < 0) | |
2783 | return r; | |
b8941f74 TG |
2784 | } |
2785 | ||
572b21d9 YW |
2786 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); |
2787 | if (r >= 0) | |
2788 | strv_free_and_replace(link->alternative_names, s); | |
2789 | ||
1c4baffc | 2790 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2791 | if (r >= 0 && mtu > 0) { |
2792 | link->mtu = mtu; | |
4e964aa0 | 2793 | if (link->original_mtu == 0) { |
afe7fd56 | 2794 | link->original_mtu = mtu; |
6a7a4e4d | 2795 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2796 | } |
2797 | ||
2798 | if (link->dhcp_client) { | |
3c9b8860 TG |
2799 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2800 | link->mtu); | |
fc95c359 YW |
2801 | if (r < 0) |
2802 | return log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); | |
afe7fd56 | 2803 | } |
7465dd22 PF |
2804 | |
2805 | if (link->radv) { | |
2806 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
2807 | if (r < 0) | |
2808 | return log_link_warning_errno(link, r, "Could not set MTU for Router Advertisement: %m"); | |
2809 | } | |
9842de0d | 2810 | } |
69629de9 | 2811 | |
e9189a1f TG |
2812 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2813 | set, simply ignore them. */ | |
b8162cd2 TR |
2814 | r = netlink_message_read_hw_addr(m, IFLA_ADDRESS, &hw_addr); |
2815 | if (r >= 0 && (link->hw_addr.length != hw_addr.length || | |
2816 | memcmp(link->hw_addr.addr.bytes, hw_addr.addr.bytes, hw_addr.length) != 0)) { | |
807667f7 | 2817 | |
b8162cd2 | 2818 | memcpy(link->hw_addr.addr.bytes, hw_addr.addr.bytes, hw_addr.length); |
807667f7 | 2819 | |
b8162cd2 | 2820 | log_link_debug(link, "Gained new hardware address: %s", HW_ADDR_TO_STR(&hw_addr)); |
807667f7 | 2821 | |
a3adb4a6 YW |
2822 | r = ipv4ll_update_mac(link); |
2823 | if (r < 0) | |
2824 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
807667f7 | 2825 | |
d947f7f9 YW |
2826 | r = dhcp4_update_mac(link); |
2827 | if (r < 0) | |
2828 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
413708d1 | 2829 | |
eebba6dc YW |
2830 | r = dhcp6_update_mac(link); |
2831 | if (r < 0) | |
2832 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
7465dd22 | 2833 | |
d0c4275c | 2834 | r = radv_update_mac(link); |
be9363cc YW |
2835 | if (r < 0) |
2836 | return log_link_warning_errno(link, r, "Could not update MAC address for Router Advertisement: %m"); | |
807667f7 YW |
2837 | |
2838 | if (link->ndisc) { | |
b8162cd2 | 2839 | r = sd_ndisc_set_mac(link->ndisc, &link->hw_addr.addr.ether); |
807667f7 YW |
2840 | if (r < 0) |
2841 | return log_link_warning_errno(link, r, "Could not update MAC for NDisc: %m"); | |
2842 | } | |
d93d655c | 2843 | |
dfc58b47 YW |
2844 | if (link->lldp) { |
2845 | r = sd_lldp_set_filter_address(link->lldp, &link->hw_addr.addr.ether); | |
2846 | if (r < 0) | |
2847 | return log_link_warning_errno(link, r, "Could not update MAC address for LLDP: %m"); | |
2848 | } | |
2849 | ||
d93d655c YW |
2850 | r = ipv4_dad_update_mac(link); |
2851 | if (r < 0) | |
2852 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4 ACD client: %m"); | |
4f882b2a TG |
2853 | } |
2854 | ||
bb262ef0 YW |
2855 | old_master = link->master_ifindex; |
2856 | (void) sd_netlink_message_read_u32(m, IFLA_MASTER, (uint32_t *) &link->master_ifindex); | |
2857 | ||
d236718c | 2858 | link_was_admin_up = link->flags & IFF_UP; |
a61bb41c TG |
2859 | had_carrier = link_has_carrier(link); |
2860 | ||
bb262ef0 | 2861 | r = link_update_flags(link, m, old_master != link->master_ifindex); |
a61bb41c TG |
2862 | if (r < 0) |
2863 | return r; | |
2864 | ||
d236718c DS |
2865 | if (!link_was_admin_up && (link->flags & IFF_UP)) { |
2866 | log_link_info(link, "Link UP"); | |
2867 | ||
2868 | r = link_admin_state_up(link); | |
2869 | if (r < 0) | |
2870 | return r; | |
61135582 | 2871 | } else if (link_was_admin_up && !(link->flags & IFF_UP)) { |
d236718c DS |
2872 | log_link_info(link, "Link DOWN"); |
2873 | ||
61135582 DS |
2874 | r = link_admin_state_down(link); |
2875 | if (r < 0) | |
2876 | return r; | |
2877 | } | |
2878 | ||
273eec24 LP |
2879 | r = link_update_lldp(link); |
2880 | if (r < 0) | |
2881 | return r; | |
2882 | ||
a61bb41c TG |
2883 | carrier_gained = !had_carrier && link_has_carrier(link); |
2884 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2885 | ||
2886 | if (carrier_gained) { | |
6a7a4e4d | 2887 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2888 | |
9c0a72f9 TG |
2889 | r = link_carrier_gained(link); |
2890 | if (r < 0) | |
2891 | return r; | |
a61bb41c | 2892 | } else if (carrier_lost) { |
6a7a4e4d | 2893 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2894 | |
9c0a72f9 TG |
2895 | r = link_carrier_lost(link); |
2896 | if (r < 0) | |
a61bb41c | 2897 | return r; |
a61bb41c TG |
2898 | } |
2899 | ||
2900 | return 0; | |
dd3efc09 | 2901 | } |
fe8db0c5 | 2902 | |
3be9d62a YW |
2903 | int manager_rtnl_process_link(sd_netlink *rtnl, sd_netlink_message *message, Manager *m) { |
2904 | Link *link = NULL; | |
2905 | NetDev *netdev = NULL; | |
2906 | uint16_t type; | |
2907 | const char *name; | |
2908 | int r, ifindex; | |
2909 | ||
2910 | assert(rtnl); | |
2911 | assert(message); | |
2912 | assert(m); | |
2913 | ||
2914 | if (sd_netlink_message_is_error(message)) { | |
2915 | r = sd_netlink_message_get_errno(message); | |
2916 | if (r < 0) | |
2917 | log_message_warning_errno(message, r, "rtnl: Could not receive link message, ignoring"); | |
2918 | ||
2919 | return 0; | |
2920 | } | |
2921 | ||
2922 | r = sd_netlink_message_get_type(message, &type); | |
2923 | if (r < 0) { | |
2924 | log_warning_errno(r, "rtnl: Could not get message type, ignoring: %m"); | |
2925 | return 0; | |
2926 | } else if (!IN_SET(type, RTM_NEWLINK, RTM_DELLINK)) { | |
2927 | log_warning("rtnl: Received unexpected message type %u when processing link, ignoring.", type); | |
2928 | return 0; | |
2929 | } | |
2930 | ||
2931 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
2932 | if (r < 0) { | |
2933 | log_warning_errno(r, "rtnl: Could not get ifindex from link message, ignoring: %m"); | |
2934 | return 0; | |
2935 | } else if (ifindex <= 0) { | |
2936 | log_warning("rtnl: received link message with invalid ifindex %d, ignoring.", ifindex); | |
2937 | return 0; | |
2938 | } | |
2939 | ||
2940 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &name); | |
2941 | if (r < 0) { | |
2942 | log_warning_errno(r, "rtnl: Received link message without ifname, ignoring: %m"); | |
2943 | return 0; | |
2944 | } | |
2945 | ||
2946 | (void) link_get(m, ifindex, &link); | |
2947 | (void) netdev_get(m, name, &netdev); | |
2948 | ||
2949 | switch (type) { | |
2950 | case RTM_NEWLINK: | |
2951 | if (!link) { | |
2952 | /* link is new, so add it */ | |
2953 | r = link_add(m, message, &link); | |
2954 | if (r < 0) { | |
2955 | log_warning_errno(r, "Could not process new link message, ignoring: %m"); | |
2956 | return 0; | |
2957 | } | |
2958 | } | |
2959 | ||
2960 | if (netdev) { | |
2961 | /* netdev exists, so make sure the ifindex matches */ | |
2962 | r = netdev_set_ifindex(netdev, message); | |
2963 | if (r < 0) { | |
2964 | log_warning_errno(r, "Could not process new link message for netdev, ignoring: %m"); | |
2965 | return 0; | |
2966 | } | |
2967 | } | |
2968 | ||
2969 | r = link_update(link, message); | |
2970 | if (r < 0) { | |
2971 | log_warning_errno(r, "Could not process link message, ignoring: %m"); | |
2972 | return 0; | |
2973 | } | |
2974 | ||
2975 | break; | |
2976 | ||
2977 | case RTM_DELLINK: | |
2978 | link_drop(link); | |
2979 | netdev_drop(netdev); | |
2980 | ||
2981 | break; | |
2982 | ||
2983 | default: | |
2984 | assert_not_reached("Received link message with invalid RTNL message type."); | |
2985 | } | |
2986 | ||
2987 | return 1; | |
2988 | } | |
2989 | ||
fe8db0c5 | 2990 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 2991 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 2992 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 2993 | [LINK_STATE_CONFIGURING] = "configuring", |
fe8db0c5 | 2994 | [LINK_STATE_CONFIGURED] = "configured", |
57bd6899 | 2995 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 2996 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 2997 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
2998 | }; |
2999 | ||
3000 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); |