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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
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> |
4cc7a82c | 7 | #include <unistd.h> |
f579559b | 8 | |
b5efdb8a | 9 | #include "alloc-util.h" |
737f1405 YW |
10 | #include "bond.h" |
11 | #include "bridge.h" | |
1346b1f0 | 12 | #include "bus-util.h" |
27dfc982 | 13 | #include "dhcp-identifier.h" |
bd91b83e | 14 | #include "dhcp-lease-internal.h" |
686d13b9 | 15 | #include "env-file.h" |
4bb7cc82 | 16 | #include "ethtool-util.h" |
3ffd4af2 | 17 | #include "fd-util.h" |
cf1d700d | 18 | #include "fileio.h" |
737f1405 | 19 | #include "ipvlan.h" |
ef118d00 | 20 | #include "missing_network.h" |
cf1d700d | 21 | #include "netlink-util.h" |
c6f7c917 | 22 | #include "network-internal.h" |
fb486c90 | 23 | #include "networkd-address-label.h" |
093e3533 | 24 | #include "networkd-address.h" |
3ddcbeea | 25 | #include "networkd-can.h" |
8fcf1d61 | 26 | #include "networkd-dhcp-server.h" |
ca5ad760 YW |
27 | #include "networkd-dhcp4.h" |
28 | #include "networkd-dhcp6.h" | |
ee446d57 | 29 | #include "networkd-fdb.h" |
ca5ad760 | 30 | #include "networkd-ipv4ll.h" |
a0e5c15d | 31 | #include "networkd-ipv6-proxy-ndp.h" |
6a1af3d4 YW |
32 | #include "networkd-link-bus.h" |
33 | #include "networkd-link.h" | |
8e1ad1ea | 34 | #include "networkd-lldp-tx.h" |
23f53b99 | 35 | #include "networkd-manager.h" |
dbf63196 | 36 | #include "networkd-mdb.h" |
1e7a0e21 | 37 | #include "networkd-ndisc.h" |
e4a71bf3 | 38 | #include "networkd-neighbor.h" |
75156ccb | 39 | #include "networkd-nexthop.h" |
518cd6b5 | 40 | #include "networkd-sriov.h" |
5e0534f1 | 41 | #include "networkd-sysctl.h" |
7465dd22 | 42 | #include "networkd-radv.h" |
bce67bbe | 43 | #include "networkd-routing-policy-rule.h" |
8d968fdd | 44 | #include "networkd-wifi.h" |
cf1d700d TG |
45 | #include "set.h" |
46 | #include "socket-util.h" | |
bf331d87 | 47 | #include "stat-util.h" |
15a5e950 | 48 | #include "stdio-util.h" |
8b43440b | 49 | #include "string-table.h" |
51517f9e | 50 | #include "strv.h" |
62e021a9 | 51 | #include "sysctl-util.h" |
34658df2 | 52 | #include "tc.h" |
e4de7287 | 53 | #include "tmpfile-util.h" |
299ad32d | 54 | #include "udev-util.h" |
cf1d700d | 55 | #include "util.h" |
737f1405 | 56 | #include "vrf.h" |
fc2f9534 | 57 | |
2d792895 | 58 | bool link_ipv4ll_enabled(Link *link, AddressFamily mask) { |
b9d74c40 | 59 | assert(link); |
910feb78 | 60 | assert((mask & ~(ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_FALLBACK_IPV4)) == 0); |
b9d74c40 | 61 | |
78c958f8 TG |
62 | if (link->flags & IFF_LOOPBACK) |
63 | return false; | |
64 | ||
65 | if (!link->network) | |
66 | return false; | |
67 | ||
500b96eb | 68 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
69 | return false; |
70 | ||
98d20a17 | 71 | if (STRPTR_IN_SET(link->kind, |
72 | "vrf", "wireguard", "ipip", "gre", "ip6gre","ip6tnl", "sit", "vti", | |
b0486c73 | 73 | "vti6", "nlmon", "xfrm", "bareudp")) |
a8f5bba6 JD |
74 | return false; |
75 | ||
f410d463 YW |
76 | /* L3 or L3S mode do not support ARP. */ |
77 | if (IN_SET(link_get_ipvlan_mode(link), NETDEV_IPVLAN_MODE_L3, NETDEV_IPVLAN_MODE_L3S)) | |
78 | return false; | |
79 | ||
f2bfcdb9 YW |
80 | if (link->network->bond) |
81 | return false; | |
82 | ||
910feb78 | 83 | return link->network->link_local & mask; |
8bc17bb3 SS |
84 | } |
85 | ||
f8f2f880 | 86 | bool link_ipv6ll_enabled(Link *link) { |
b9d74c40 LP |
87 | assert(link); |
88 | ||
fa709992 LP |
89 | if (!socket_ipv6_is_supported()) |
90 | return false; | |
91 | ||
d0d6a4cd TG |
92 | if (link->flags & IFF_LOOPBACK) |
93 | return false; | |
94 | ||
95 | if (!link->network) | |
96 | return false; | |
97 | ||
500b96eb | 98 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
99 | return false; |
100 | ||
101 | if (STRPTR_IN_SET(link->kind, "vrf", "wireguard", "ipip", "gre", "sit", "vti", "nlmon")) | |
a8f5bba6 JD |
102 | return false; |
103 | ||
f2bfcdb9 YW |
104 | if (link->network->bond) |
105 | return false; | |
106 | ||
e0ee46f2 | 107 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
108 | } |
109 | ||
5e0534f1 | 110 | bool link_ipv6_enabled(Link *link) { |
439689c6 SS |
111 | assert(link); |
112 | ||
113 | if (!socket_ipv6_is_supported()) | |
114 | return false; | |
115 | ||
b102cdca | 116 | if (link->network->bond) |
2b00a4e0 TY |
117 | return false; |
118 | ||
500b96eb | 119 | if (link->iftype == ARPHRD_CAN) |
af9ba57a YW |
120 | return false; |
121 | ||
4cef7fe3 | 122 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
adfeee49 YW |
123 | if (link_ipv6ll_enabled(link)) |
124 | return true; | |
125 | ||
126 | if (network_has_static_ipv6_configurations(link->network)) | |
127 | return true; | |
128 | ||
129 | return false; | |
439689c6 SS |
130 | } |
131 | ||
34bf3c00 YW |
132 | static bool link_is_enslaved(Link *link) { |
133 | if (link->flags & IFF_SLAVE) | |
134 | /* Even if the link is not managed by networkd, honor IFF_SLAVE flag. */ | |
135 | return true; | |
136 | ||
34bf3c00 YW |
137 | if (!link->network) |
138 | return false; | |
139 | ||
bb262ef0 | 140 | if (link->master_ifindex > 0 && link->network->bridge) |
34bf3c00 YW |
141 | return true; |
142 | ||
bb262ef0 YW |
143 | /* TODO: add conditions for other netdevs. */ |
144 | ||
34bf3c00 YW |
145 | return false; |
146 | } | |
147 | ||
45e11abf YW |
148 | static void link_update_master_operstate(Link *link, NetDev *netdev) { |
149 | Link *master; | |
150 | ||
151 | if (!netdev) | |
152 | return; | |
153 | ||
7936917e YW |
154 | if (netdev->ifindex <= 0) |
155 | return; | |
156 | ||
45e11abf YW |
157 | if (link_get(link->manager, netdev->ifindex, &master) < 0) |
158 | return; | |
159 | ||
160 | link_update_operstate(master, true); | |
161 | } | |
162 | ||
163 | void link_update_operstate(Link *link, bool also_update_master) { | |
84de38c5 | 164 | LinkOperationalState operstate; |
1678fbb3 YW |
165 | LinkCarrierState carrier_state; |
166 | LinkAddressState address_state; | |
35c5a9ca | 167 | _cleanup_strv_free_ char **p = NULL; |
1678fbb3 | 168 | uint8_t scope = RT_SCOPE_NOWHERE; |
35c5a9ca | 169 | bool changed = false; |
1678fbb3 | 170 | Address *address; |
14153d1b | 171 | |
84de38c5 TG |
172 | assert(link); |
173 | ||
174 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
1678fbb3 | 175 | carrier_state = LINK_CARRIER_STATE_DORMANT; |
84de38c5 | 176 | else if (link_has_carrier(link)) { |
1678fbb3 YW |
177 | if (link_is_enslaved(link)) |
178 | carrier_state = LINK_CARRIER_STATE_ENSLAVED; | |
84de38c5 | 179 | else |
1678fbb3 | 180 | carrier_state = LINK_CARRIER_STATE_CARRIER; |
84de38c5 | 181 | } else if (link->flags & IFF_UP) |
1678fbb3 | 182 | carrier_state = LINK_CARRIER_STATE_NO_CARRIER; |
84de38c5 | 183 | else |
1678fbb3 | 184 | carrier_state = LINK_CARRIER_STATE_OFF; |
84de38c5 | 185 | |
1678fbb3 | 186 | if (carrier_state >= LINK_CARRIER_STATE_CARRIER) { |
959f65d3 YW |
187 | Link *slave; |
188 | ||
90e74a66 | 189 | SET_FOREACH(slave, link->slaves) { |
959f65d3 | 190 | link_update_operstate(slave, false); |
84de38c5 | 191 | |
1678fbb3 YW |
192 | if (slave->carrier_state < LINK_CARRIER_STATE_CARRIER) |
193 | carrier_state = LINK_CARRIER_STATE_DEGRADED_CARRIER; | |
84de38c5 | 194 | } |
959f65d3 | 195 | } |
84de38c5 | 196 | |
90e74a66 | 197 | SET_FOREACH(address, link->addresses) { |
1678fbb3 YW |
198 | if (!address_is_ready(address)) |
199 | continue; | |
84de38c5 | 200 | |
1678fbb3 YW |
201 | if (address->scope < scope) |
202 | scope = address->scope; | |
203 | } | |
84de38c5 | 204 | |
1678fbb3 | 205 | /* for operstate we also take foreign addresses into account */ |
90e74a66 | 206 | SET_FOREACH(address, link->addresses_foreign) { |
1678fbb3 YW |
207 | if (!address_is_ready(address)) |
208 | continue; | |
209 | ||
210 | if (address->scope < scope) | |
211 | scope = address->scope; | |
212 | } | |
213 | ||
214 | if (scope < RT_SCOPE_SITE) | |
215 | /* universally accessible addresses found */ | |
216 | address_state = LINK_ADDRESS_STATE_ROUTABLE; | |
217 | else if (scope < RT_SCOPE_HOST) | |
218 | /* only link or site local addresses found */ | |
219 | address_state = LINK_ADDRESS_STATE_DEGRADED; | |
84de38c5 | 220 | else |
1678fbb3 YW |
221 | /* no useful addresses found */ |
222 | address_state = LINK_ADDRESS_STATE_OFF; | |
223 | ||
224 | /* Mapping of address and carrier state vs operational state | |
225 | * carrier state | |
226 | * | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
227 | * ------------------------------------------------------------------------------ | |
228 | * off | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
229 | * address_state degraded | off | no-carrier | dormant | degraded-carrier | degraded | enslaved | |
230 | * routable | off | no-carrier | dormant | degraded-carrier | routable | routable | |
231 | */ | |
84de38c5 | 232 | |
1678fbb3 YW |
233 | if (carrier_state < LINK_CARRIER_STATE_CARRIER || address_state == LINK_ADDRESS_STATE_OFF) |
234 | operstate = (LinkOperationalState) carrier_state; | |
235 | else if (address_state == LINK_ADDRESS_STATE_ROUTABLE) | |
236 | operstate = LINK_OPERSTATE_ROUTABLE; | |
237 | else if (carrier_state == LINK_CARRIER_STATE_CARRIER) | |
238 | operstate = LINK_OPERSTATE_DEGRADED; | |
239 | else | |
14153d1b YW |
240 | operstate = LINK_OPERSTATE_ENSLAVED; |
241 | ||
35c5a9ca YW |
242 | if (link->carrier_state != carrier_state) { |
243 | link->carrier_state = carrier_state; | |
244 | changed = true; | |
245 | if (strv_extend(&p, "CarrierState") < 0) | |
246 | log_oom(); | |
247 | } | |
959f65d3 | 248 | |
35c5a9ca YW |
249 | if (link->address_state != address_state) { |
250 | link->address_state = address_state; | |
251 | changed = true; | |
252 | if (strv_extend(&p, "AddressState") < 0) | |
253 | log_oom(); | |
959f65d3 YW |
254 | } |
255 | ||
84de38c5 TG |
256 | if (link->operstate != operstate) { |
257 | link->operstate = operstate; | |
35c5a9ca YW |
258 | changed = true; |
259 | if (strv_extend(&p, "OperationalState") < 0) | |
260 | log_oom(); | |
84de38c5 | 261 | } |
959f65d3 | 262 | |
35c5a9ca YW |
263 | if (p) |
264 | link_send_changed_strv(link, p); | |
265 | if (changed) | |
266 | link_dirty(link); | |
267 | ||
45e11abf YW |
268 | if (also_update_master && link->network) { |
269 | link_update_master_operstate(link, link->network->bond); | |
270 | link_update_master_operstate(link, link->network->bridge); | |
959f65d3 | 271 | } |
84de38c5 TG |
272 | } |
273 | ||
51d18171 TG |
274 | #define FLAG_STRING(string, flag, old, new) \ |
275 | (((old ^ new) & flag) \ | |
276 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
277 | : "") | |
278 | ||
bb262ef0 | 279 | static int link_update_flags(Link *link, sd_netlink_message *m, bool force_update_operstate) { |
51d18171 TG |
280 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
281 | uint8_t operstate; | |
282 | int r; | |
283 | ||
284 | assert(link); | |
285 | ||
286 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
287 | if (r < 0) |
288 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 289 | |
1c4baffc | 290 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
291 | if (r < 0) |
292 | /* if we got a message without operstate, take it to mean | |
293 | the state was unchanged */ | |
294 | operstate = link->kernel_operstate; | |
295 | ||
bb262ef0 | 296 | if (!force_update_operstate && (link->flags == flags) && (link->kernel_operstate == operstate)) |
51d18171 TG |
297 | return 0; |
298 | ||
299 | if (link->flags != flags) { | |
6a7a4e4d | 300 | 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 |
301 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
302 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
303 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
304 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
305 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
306 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
307 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
308 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
309 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
310 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
311 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
312 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
313 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
314 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
315 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
316 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
317 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
318 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
319 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
320 | ||
321 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
322 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
323 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
324 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
325 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
326 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
327 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
328 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
329 | ||
330 | /* link flags are currently at most 18 bits, let's align to | |
331 | * printing 20 */ | |
332 | if (unknown_flags_added) | |
79008bdd | 333 | log_link_debug(link, |
6a7a4e4d | 334 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
335 | unknown_flags_added); |
336 | ||
337 | if (unknown_flags_removed) | |
79008bdd | 338 | log_link_debug(link, |
6a7a4e4d | 339 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
340 | unknown_flags_removed); |
341 | } | |
342 | ||
343 | link->flags = flags; | |
344 | link->kernel_operstate = operstate; | |
345 | ||
959f65d3 | 346 | link_update_operstate(link, true); |
51d18171 TG |
347 | |
348 | return 0; | |
349 | } | |
350 | ||
1c4baffc | 351 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
8e766630 | 352 | _cleanup_(link_unrefp) Link *link = NULL; |
6cad256d | 353 | const char *ifname, *kind = NULL; |
b710e6b6 | 354 | unsigned short iftype; |
572b21d9 YW |
355 | int r, ifindex; |
356 | uint16_t type; | |
f579559b | 357 | |
0c2f9b84 | 358 | assert(manager); |
505f8da7 | 359 | assert(message); |
f579559b TG |
360 | assert(ret); |
361 | ||
6cad256d TJ |
362 | /* check for link kind */ |
363 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
364 | if (r == 0) { | |
db2f8a2e | 365 | (void) sd_netlink_message_read_string(message, IFLA_INFO_KIND, &kind); |
6cad256d TJ |
366 | r = sd_netlink_message_exit_container(message); |
367 | if (r < 0) | |
368 | return r; | |
369 | } | |
370 | ||
1c4baffc | 371 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
372 | if (r < 0) |
373 | return r; | |
374 | else if (type != RTM_NEWLINK) | |
375 | return -EINVAL; | |
376 | ||
377 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
378 | if (r < 0) | |
379 | return r; | |
380 | else if (ifindex <= 0) | |
381 | return -EINVAL; | |
382 | ||
b710e6b6 LP |
383 | r = sd_rtnl_message_link_get_type(message, &iftype); |
384 | if (r < 0) | |
385 | return r; | |
386 | ||
1c4baffc | 387 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
388 | if (r < 0) |
389 | return r; | |
390 | ||
17f9c355 | 391 | link = new(Link, 1); |
f579559b TG |
392 | if (!link) |
393 | return -ENOMEM; | |
394 | ||
17f9c355 YW |
395 | *link = (Link) { |
396 | .n_ref = 1, | |
397 | .manager = manager, | |
398 | .state = LINK_STATE_PENDING, | |
17f9c355 YW |
399 | .ifindex = ifindex, |
400 | .iftype = iftype, | |
15761549 YW |
401 | |
402 | .n_dns = (unsigned) -1, | |
403 | .dns_default_route = -1, | |
404 | .llmnr = _RESOLVE_SUPPORT_INVALID, | |
405 | .mdns = _RESOLVE_SUPPORT_INVALID, | |
406 | .dnssec_mode = _DNSSEC_MODE_INVALID, | |
407 | .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID, | |
17f9c355 YW |
408 | }; |
409 | ||
505f8da7 TG |
410 | link->ifname = strdup(ifname); |
411 | if (!link->ifname) | |
412 | return -ENOMEM; | |
f579559b | 413 | |
6cad256d TJ |
414 | if (kind) { |
415 | link->kind = strdup(kind); | |
416 | if (!link->kind) | |
417 | return -ENOMEM; | |
418 | } | |
419 | ||
cbff7170 TJ |
420 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t *)&link->master_ifindex); |
421 | if (r < 0) | |
422 | log_link_debug_errno(link, r, "New device has no master, continuing without"); | |
423 | ||
1c4baffc | 424 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 425 | if (r < 0) |
34437b4f | 426 | log_link_debug_errno(link, r, "MAC address not found for new device, continuing without"); |
512922f8 | 427 | |
c643bda5 | 428 | r = ethtool_get_permanent_macaddr(&manager->ethtool_fd, link->ifname, &link->permanent_mac); |
4bb7cc82 YW |
429 | if (r < 0) |
430 | log_link_debug_errno(link, r, "Permanent MAC address not found for new device, continuing without: %m"); | |
431 | ||
c643bda5 YW |
432 | r = ethtool_get_driver(&manager->ethtool_fd, link->ifname, &link->driver); |
433 | if (r < 0) | |
434 | log_link_debug_errno(link, r, "Failed to get driver, continuing without: %m"); | |
435 | ||
572b21d9 YW |
436 | r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &link->alternative_names); |
437 | if (r < 0 && r != -ENODATA) | |
438 | return r; | |
439 | ||
34437b4f | 440 | if (asprintf(&link->state_file, "/run/systemd/netif/links/%d", link->ifindex) < 0) |
315db1a8 | 441 | return -ENOMEM; |
fe8db0c5 | 442 | |
34437b4f | 443 | if (asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", link->ifindex) < 0) |
68a8723c TG |
444 | return -ENOMEM; |
445 | ||
34437b4f | 446 | if (asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", link->ifindex) < 0) |
49699bac SS |
447 | return -ENOMEM; |
448 | ||
d5099efc | 449 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
450 | if (r < 0) |
451 | return r; | |
452 | ||
453 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
454 | if (r < 0) |
455 | return r; | |
456 | ||
bb262ef0 | 457 | r = link_update_flags(link, message, false); |
51d18171 TG |
458 | if (r < 0) |
459 | return r; | |
460 | ||
1cc6c93a | 461 | *ret = TAKE_PTR(link); |
f579559b TG |
462 | |
463 | return 0; | |
464 | } | |
465 | ||
15761549 YW |
466 | void link_ntp_settings_clear(Link *link) { |
467 | link->ntp = strv_free(link->ntp); | |
468 | } | |
469 | ||
470 | void link_dns_settings_clear(Link *link) { | |
e77bd3fd YW |
471 | if (link->n_dns != (unsigned) -1) |
472 | for (unsigned i = 0; i < link->n_dns; i++) | |
473 | in_addr_full_free(link->dns[i]); | |
15761549 YW |
474 | link->dns = mfree(link->dns); |
475 | link->n_dns = (unsigned) -1; | |
476 | ||
477 | link->search_domains = ordered_set_free_free(link->search_domains); | |
478 | link->route_domains = ordered_set_free_free(link->route_domains); | |
479 | ||
480 | link->dns_default_route = -1; | |
481 | link->llmnr = _RESOLVE_SUPPORT_INVALID; | |
482 | link->mdns = _RESOLVE_SUPPORT_INVALID; | |
483 | link->dnssec_mode = _DNSSEC_MODE_INVALID; | |
484 | link->dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID; | |
485 | ||
486 | link->dnssec_negative_trust_anchors = set_free_free(link->dnssec_negative_trust_anchors); | |
487 | } | |
488 | ||
1a6bb31f YW |
489 | static void link_free_engines(Link *link) { |
490 | if (!link) | |
491 | return; | |
492 | ||
493 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); | |
494 | link->dhcp_client = sd_dhcp_client_unref(link->dhcp_client); | |
495 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); | |
1a6bb31f YW |
496 | |
497 | link->lldp = sd_lldp_unref(link->lldp); | |
498 | ||
499 | ndisc_flush(link); | |
500 | ||
501 | link->ipv4ll = sd_ipv4ll_unref(link->ipv4ll); | |
502 | link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); | |
1633c457 | 503 | link->dhcp6_lease = sd_dhcp6_lease_unref(link->dhcp6_lease); |
1a6bb31f YW |
504 | link->ndisc = sd_ndisc_unref(link->ndisc); |
505 | link->radv = sd_radv_unref(link->radv); | |
506 | } | |
507 | ||
8301aa0b | 508 | static Link *link_free(Link *link) { |
8301aa0b | 509 | assert(link); |
f579559b | 510 | |
15761549 YW |
511 | link_ntp_settings_clear(link); |
512 | link_dns_settings_clear(link); | |
513 | ||
8eec0b9d YW |
514 | link->routes = set_free(link->routes); |
515 | link->routes_foreign = set_free(link->routes_foreign); | |
6e537f62 YW |
516 | link->dhcp_routes = set_free(link->dhcp_routes); |
517 | link->dhcp_routes_old = set_free(link->dhcp_routes_old); | |
1633c457 YW |
518 | link->dhcp6_routes = set_free(link->dhcp6_routes); |
519 | link->dhcp6_routes_old = set_free(link->dhcp6_routes_old); | |
520 | link->dhcp6_pd_routes = set_free(link->dhcp6_pd_routes); | |
521 | link->dhcp6_pd_routes_old = set_free(link->dhcp6_pd_routes_old); | |
69203fba | 522 | link->ndisc_routes = set_free(link->ndisc_routes); |
adda1ed9 | 523 | |
8eec0b9d YW |
524 | link->nexthops = set_free(link->nexthops); |
525 | link->nexthops_foreign = set_free(link->nexthops_foreign); | |
c16c7808 | 526 | |
8eec0b9d YW |
527 | link->neighbors = set_free(link->neighbors); |
528 | link->neighbors_foreign = set_free(link->neighbors_foreign); | |
d1bdafd2 | 529 | |
8eec0b9d YW |
530 | link->addresses = set_free(link->addresses); |
531 | link->addresses_foreign = set_free(link->addresses_foreign); | |
aa651e88 | 532 | link->pool_addresses = set_free(link->pool_addresses); |
e5526518 | 533 | link->static_addresses = set_free(link->static_addresses); |
1633c457 YW |
534 | link->dhcp6_addresses = set_free(link->dhcp6_addresses); |
535 | link->dhcp6_addresses_old = set_free(link->dhcp6_addresses_old); | |
536 | link->dhcp6_pd_addresses = set_free(link->dhcp6_pd_addresses); | |
537 | link->dhcp6_pd_addresses_old = set_free(link->dhcp6_pd_addresses_old); | |
69203fba | 538 | link->ndisc_addresses = set_free(link->ndisc_addresses); |
adda1ed9 | 539 | |
7272b25e | 540 | link_lldp_emit_stop(link); |
1a6bb31f | 541 | link_free_engines(link); |
68a8723c | 542 | free(link->lease_file); |
49699bac SS |
543 | free(link->lldp_file); |
544 | ||
c166a070 | 545 | free(link->ifname); |
572b21d9 | 546 | strv_free(link->alternative_names); |
ceac4078 | 547 | free(link->kind); |
8d968fdd | 548 | free(link->ssid); |
c643bda5 | 549 | free(link->driver); |
6cad256d | 550 | |
db2f8a2e | 551 | (void) unlink(link->state_file); |
fe8db0c5 | 552 | free(link->state_file); |
c166a070 | 553 | |
51517f9e | 554 | sd_device_unref(link->sd_device); |
b5db00e5 | 555 | |
0d4ad91d | 556 | hashmap_free(link->bound_to_links); |
0d4ad91d AR |
557 | hashmap_free(link->bound_by_links); |
558 | ||
5f707e12 | 559 | set_free_with_destructor(link->slaves, link_unref); |
033295c1 | 560 | |
c9c908a6 YW |
561 | network_unref(link->network); |
562 | ||
8301aa0b | 563 | return mfree(link); |
14b746f7 TG |
564 | } |
565 | ||
8301aa0b | 566 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 567 | |
11a7f229 TG |
568 | int link_get(Manager *m, int ifindex, Link **ret) { |
569 | Link *link; | |
11a7f229 TG |
570 | |
571 | assert(m); | |
e856ed00 | 572 | assert(ifindex > 0); |
11a7f229 TG |
573 | assert(ret); |
574 | ||
ae06ab10 | 575 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
576 | if (!link) |
577 | return -ENODEV; | |
578 | ||
579 | *ret = link; | |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
af9ba57a | 584 | void link_set_state(Link *link, LinkState state) { |
e331e246 TG |
585 | assert(link); |
586 | ||
587 | if (link->state == state) | |
588 | return; | |
589 | ||
0beb9542 YW |
590 | log_link_debug(link, "State changed: %s -> %s", |
591 | link_state_to_string(link->state), | |
592 | link_state_to_string(state)); | |
593 | ||
e331e246 TG |
594 | link->state = state; |
595 | ||
596 | link_send_changed(link, "AdministrativeState", NULL); | |
e331e246 TG |
597 | } |
598 | ||
57bd6899 TG |
599 | static void link_enter_unmanaged(Link *link) { |
600 | assert(link); | |
601 | ||
e331e246 | 602 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 603 | |
84de38c5 | 604 | link_dirty(link); |
57bd6899 TG |
605 | } |
606 | ||
95355a28 | 607 | int link_stop_clients(Link *link, bool may_keep_dhcp) { |
111bb8f9 TG |
608 | int r = 0, k; |
609 | ||
610 | assert(link); | |
611 | assert(link->manager); | |
612 | assert(link->manager->event); | |
613 | ||
80060352 ZJS |
614 | bool keep_dhcp = may_keep_dhcp && |
615 | link->network && | |
616 | (link->manager->restarting || | |
617 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP_ON_STOP)); | |
618 | ||
619 | if (link->dhcp_client && !keep_dhcp) { | |
111bb8f9 | 620 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 621 | if (k < 0) |
36c7d709 | 622 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
623 | } |
624 | ||
ba179154 | 625 | if (link->ipv4ll) { |
111bb8f9 | 626 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d | 627 | if (k < 0) |
36c7d709 | 628 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); |
dd43110f TG |
629 | } |
630 | ||
2488e4d9 YW |
631 | k = link_stop_ipv4_dad(link); |
632 | if (k < 0) | |
633 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client: %m"); | |
051e77ca | 634 | |
f5a8c43f TG |
635 | if (link->dhcp6_client) { |
636 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
637 | if (k < 0) | |
36c7d709 | 638 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); |
f5a8c43f | 639 | } |
4138fb2c | 640 | |
2ffd6d73 YW |
641 | k = dhcp6_pd_remove(link); |
642 | if (k < 0) | |
643 | r = log_link_warning_errno(link, k, "Could not remove DHCPv6 PD addresses and routes: %m"); | |
1633c457 | 644 | |
1e7a0e21 LP |
645 | if (link->ndisc) { |
646 | k = sd_ndisc_stop(link->ndisc); | |
6a7a4e4d | 647 | if (k < 0) |
36c7d709 | 648 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
649 | } |
650 | ||
7465dd22 | 651 | if (link->radv) { |
290696e5 | 652 | k = sd_radv_stop(link->radv); |
7465dd22 PF |
653 | if (k < 0) |
654 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
655 | } | |
656 | ||
7272b25e | 657 | link_lldp_emit_stop(link); |
111bb8f9 TG |
658 | return r; |
659 | } | |
660 | ||
b22d8a00 | 661 | void link_enter_failed(Link *link) { |
ef1ba606 | 662 | assert(link); |
f882c247 | 663 | |
370e9930 | 664 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
665 | return; |
666 | ||
6a7a4e4d | 667 | log_link_warning(link, "Failed"); |
449f7554 | 668 | |
e331e246 | 669 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 670 | |
95355a28 | 671 | link_stop_clients(link, false); |
111bb8f9 | 672 | |
84de38c5 | 673 | link_dirty(link); |
f882c247 TG |
674 | } |
675 | ||
7033af49 YW |
676 | static int link_join_netdevs_after_configured(Link *link) { |
677 | NetDev *netdev; | |
7033af49 YW |
678 | int r; |
679 | ||
90e74a66 | 680 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
7033af49 YW |
681 | if (netdev->ifindex > 0) |
682 | /* Assume already enslaved. */ | |
683 | continue; | |
684 | ||
685 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_AFTER_CONFIGURED) | |
686 | continue; | |
687 | ||
688 | log_struct(LOG_DEBUG, | |
689 | LOG_LINK_INTERFACE(link), | |
690 | LOG_NETDEV_INTERFACE(netdev), | |
691 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); | |
692 | ||
693 | r = netdev_join(netdev, link, NULL); | |
694 | if (r < 0) | |
695 | return log_struct_errno(LOG_WARNING, r, | |
696 | LOG_LINK_INTERFACE(link), | |
697 | LOG_NETDEV_INTERFACE(netdev), | |
698 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); | |
699 | } | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
e3a7b048 | 704 | static void link_enter_configured(Link *link) { |
dd43110f TG |
705 | assert(link); |
706 | assert(link->network); | |
e3a7b048 | 707 | |
289e6774 | 708 | if (link->state != LINK_STATE_CONFIGURING) |
e3a7b048 | 709 | return; |
dd43110f | 710 | |
e331e246 | 711 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 712 | |
7033af49 YW |
713 | (void) link_join_netdevs_after_configured(link); |
714 | ||
84de38c5 | 715 | link_dirty(link); |
dd43110f TG |
716 | } |
717 | ||
6accfd31 DA |
718 | void link_check_ready(Link *link) { |
719 | Address *a; | |
6accfd31 DA |
720 | |
721 | assert(link); | |
722 | ||
5f58af25 YW |
723 | if (link->state == LINK_STATE_CONFIGURED) |
724 | return; | |
725 | ||
726 | if (link->state != LINK_STATE_CONFIGURING) { | |
727 | log_link_debug(link, "%s(): link is in %s state.", __func__, link_state_to_string(link->state)); | |
6accfd31 | 728 | return; |
39373cb9 | 729 | } |
6accfd31 DA |
730 | |
731 | if (!link->network) | |
732 | return; | |
733 | ||
39373cb9 YW |
734 | if (!link->addresses_configured) { |
735 | log_link_debug(link, "%s(): static addresses are not configured.", __func__); | |
6accfd31 | 736 | return; |
39373cb9 | 737 | } |
6accfd31 | 738 | |
39373cb9 YW |
739 | if (!link->neighbors_configured) { |
740 | log_link_debug(link, "%s(): static neighbors are not configured.", __func__); | |
6accfd31 | 741 | return; |
39373cb9 | 742 | } |
6accfd31 | 743 | |
90e74a66 | 744 | SET_FOREACH(a, link->addresses) |
39373cb9 YW |
745 | if (!address_is_ready(a)) { |
746 | _cleanup_free_ char *str = NULL; | |
747 | ||
748 | (void) in_addr_to_string(a->family, &a->in_addr, &str); | |
749 | log_link_debug(link, "%s(): an address %s/%d is not ready.", __func__, strnull(str), a->prefixlen); | |
6aa5773b | 750 | return; |
39373cb9 | 751 | } |
6aa5773b | 752 | |
39373cb9 YW |
753 | if (!link->static_routes_configured) { |
754 | log_link_debug(link, "%s(): static routes are not configured.", __func__); | |
6accfd31 | 755 | return; |
39373cb9 | 756 | } |
6accfd31 | 757 | |
39373cb9 YW |
758 | if (!link->static_nexthops_configured) { |
759 | log_link_debug(link, "%s(): static nexthops are not configured.", __func__); | |
c16c7808 | 760 | return; |
39373cb9 | 761 | } |
c16c7808 | 762 | |
39373cb9 YW |
763 | if (!link->routing_policy_rules_configured) { |
764 | log_link_debug(link, "%s(): static routing policy rules are not configured.", __func__); | |
6accfd31 | 765 | return; |
39373cb9 | 766 | } |
6accfd31 | 767 | |
39373cb9 YW |
768 | if (!link->tc_configured) { |
769 | log_link_debug(link, "%s(): traffic controls are not configured.", __func__); | |
4ecdcb07 | 770 | return; |
39373cb9 | 771 | } |
4ecdcb07 | 772 | |
39373cb9 YW |
773 | if (!link->sr_iov_configured) { |
774 | log_link_debug(link, "%s(): SR-IOV is not configured.", __func__); | |
518cd6b5 | 775 | return; |
39373cb9 | 776 | } |
518cd6b5 | 777 | |
1f241589 YW |
778 | if (!link->bridge_mdb_configured) { |
779 | log_link_debug(link, "%s(): Bridge MDB is not configured.", __func__); | |
780 | return; | |
781 | } | |
782 | ||
463797c1 | 783 | if (link_has_carrier(link) || !link->network->configure_without_carrier) { |
50550722 YW |
784 | bool has_ndisc_address = false; |
785 | NDiscAddress *n; | |
6accfd31 | 786 | |
1c09d84e | 787 | if (link_ipv4ll_enabled(link, ADDRESS_FAMILY_IPV4) && !link->ipv4ll_address_configured) { |
39373cb9 | 788 | log_link_debug(link, "%s(): IPv4LL is not configured.", __func__); |
463797c1 | 789 | return; |
39373cb9 | 790 | } |
6accfd31 | 791 | |
463797c1 | 792 | if (link_ipv6ll_enabled(link) && |
39373cb9 YW |
793 | in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) { |
794 | log_link_debug(link, "%s(): IPv6LL is not configured.", __func__); | |
463797c1 | 795 | return; |
39373cb9 | 796 | } |
6accfd31 | 797 | |
90e74a66 | 798 | SET_FOREACH(n, link->ndisc_addresses) |
50550722 YW |
799 | if (!n->marked) { |
800 | has_ndisc_address = true; | |
801 | break; | |
802 | } | |
803 | ||
15797d6a | 804 | if ((link_dhcp4_enabled(link) || link_dhcp6_enabled(link)) && |
50550722 | 805 | !link->dhcp_address && set_isempty(link->dhcp6_addresses) && !has_ndisc_address && |
15797d6a YW |
806 | !(link_ipv4ll_enabled(link, ADDRESS_FAMILY_FALLBACK_IPV4) && link->ipv4ll_address_configured)) { |
807 | log_link_debug(link, "%s(): DHCP4 or DHCP6 is enabled but no dynamic address is assigned yet.", __func__); | |
659ad3a0 YW |
808 | return; |
809 | } | |
810 | ||
1633c457 | 811 | if (link_dhcp4_enabled(link) || link_dhcp6_enabled(link) || link_dhcp6_pd_is_enabled(link) || link_ipv6_accept_ra_enabled(link)) { |
39373cb9 YW |
812 | if (!link->dhcp4_configured && |
813 | !(link->dhcp6_address_configured && link->dhcp6_route_configured) && | |
814 | !(link->dhcp6_pd_address_configured && link->dhcp6_pd_route_configured) && | |
d98c546d | 815 | !(link->ndisc_addresses_configured && link->ndisc_routes_configured) && |
1c09d84e | 816 | !(link_ipv4ll_enabled(link, ADDRESS_FAMILY_FALLBACK_IPV4) && link->ipv4ll_address_configured)) { |
39373cb9 YW |
817 | /* When DHCP or RA is enabled, at least one protocol must provide an address, or |
818 | * an IPv4ll fallback address must be configured. */ | |
819 | log_link_debug(link, "%s(): dynamic addresses or routes are not configured.", __func__); | |
820 | return; | |
821 | } | |
822 | ||
d98c546d | 823 | log_link_debug(link, "%s(): dhcp4:%s dhcp6_addresses:%s dhcp_routes:%s dhcp_pd_addresses:%s dhcp_pd_routes:%s ndisc_addresses:%s ndisc_routes:%s", |
39373cb9 YW |
824 | __func__, |
825 | yes_no(link->dhcp4_configured), | |
826 | yes_no(link->dhcp6_address_configured), | |
827 | yes_no(link->dhcp6_route_configured), | |
828 | yes_no(link->dhcp6_pd_address_configured), | |
829 | yes_no(link->dhcp6_pd_route_configured), | |
d98c546d YW |
830 | yes_no(link->ndisc_addresses_configured), |
831 | yes_no(link->ndisc_routes_configured)); | |
39373cb9 | 832 | } |
463797c1 | 833 | } |
6accfd31 | 834 | |
5f58af25 | 835 | link_enter_configured(link); |
6accfd31 DA |
836 | |
837 | return; | |
838 | } | |
839 | ||
682c65b0 | 840 | static int link_set_static_configs(Link *link) { |
f882c247 TG |
841 | int r; |
842 | ||
843 | assert(link); | |
844 | assert(link->network); | |
f5be5601 | 845 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 846 | |
2428613f | 847 | /* Reset all *_configured flags we are configuring. */ |
9b966cee | 848 | link->request_static_addresses = false; |
2428613f | 849 | link->addresses_configured = false; |
6aa5773b | 850 | link->addresses_ready = false; |
2428613f YW |
851 | link->neighbors_configured = false; |
852 | link->static_routes_configured = false; | |
c16c7808 | 853 | link->static_nexthops_configured = false; |
2428613f YW |
854 | link->routing_policy_rules_configured = false; |
855 | ||
f6bb7ac5 TJ |
856 | r = link_set_bridge_fdb(link); |
857 | if (r < 0) | |
858 | return r; | |
859 | ||
1f241589 YW |
860 | r = link_set_bridge_mdb(link); |
861 | if (r < 0) | |
862 | return r; | |
863 | ||
58f1fe9a | 864 | r = link_set_neighbors(link); |
f3ef324d YW |
865 | if (r < 0) |
866 | return r; | |
e4a71bf3 | 867 | |
682c65b0 YW |
868 | r = link_set_addresses(link); |
869 | if (r < 0) | |
870 | return r; | |
bd6379ec | 871 | |
fe2bc17c YW |
872 | r = link_set_address_labels(link); |
873 | if (r < 0) | |
874 | return r; | |
f882c247 | 875 | |
e5526518 | 876 | /* now that we can figure out a default address for the dhcp server, start it */ |
5ae0fb7f YW |
877 | r = dhcp4_server_configure(link); |
878 | if (r < 0) | |
879 | return r; | |
d4cdbea5 | 880 | |
f882c247 TG |
881 | return 0; |
882 | } | |
883 | ||
3a390124 | 884 | static int link_configure_continue(Link *link); |
55dc8c4a | 885 | |
302a796f | 886 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4f882b2a TG |
887 | int r; |
888 | ||
889 | assert(m); | |
890 | assert(link); | |
891 | assert(link->ifname); | |
892 | ||
55dc8c4a YW |
893 | link->setting_mtu = false; |
894 | ||
5da8149f | 895 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
896 | return 1; |
897 | ||
1c4baffc | 898 | r = sd_netlink_message_get_errno(m); |
4ff296b0 | 899 | if (r < 0) |
5ecb131d | 900 | log_link_message_warning_errno(link, m, r, "Could not set MTU, ignoring"); |
4ff296b0 YW |
901 | else |
902 | log_link_debug(link, "Setting MTU done."); | |
55dc8c4a | 903 | |
4ff296b0 | 904 | if (link->state == LINK_STATE_INITIALIZED) { |
3a390124 | 905 | r = link_configure_continue(link); |
4ff296b0 YW |
906 | if (r < 0) |
907 | link_enter_failed(link); | |
908 | } | |
4f882b2a TG |
909 | |
910 | return 1; | |
911 | } | |
912 | ||
933c70a0 | 913 | int link_set_mtu(Link *link, uint32_t mtu) { |
4afd3348 | 914 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f882b2a TG |
915 | int r; |
916 | ||
917 | assert(link); | |
918 | assert(link->manager); | |
919 | assert(link->manager->rtnl); | |
920 | ||
40288ece YW |
921 | if (mtu == 0 || link->setting_mtu) |
922 | return 0; | |
923 | ||
933c70a0 | 924 | if (link->mtu == mtu) |
ee493106 YW |
925 | return 0; |
926 | ||
6a7a4e4d | 927 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 928 | |
6a7a4e4d LP |
929 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
930 | if (r < 0) | |
931 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 932 | |
44b598a1 | 933 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes |
72c2500b YW |
934 | * on the interface. Bump up MTU bytes to IPV6_MTU_MIN. */ |
935 | if (link_ipv6_enabled(link) && mtu < IPV6_MIN_MTU) { | |
44b598a1 SS |
936 | |
937 | log_link_warning(link, "Bumping MTU to " STRINGIFY(IPV6_MIN_MTU) ", as " | |
d236718c | 938 | "IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes"); |
44b598a1 | 939 | |
72c2500b | 940 | mtu = IPV6_MIN_MTU; |
44b598a1 SS |
941 | } |
942 | ||
1c4baffc | 943 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
944 | if (r < 0) |
945 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 946 | |
302a796f YW |
947 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_mtu_handler, |
948 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
949 | if (r < 0) |
950 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 951 | |
ae941762 | 952 | link_ref(link); |
1046bf9b | 953 | link->setting_mtu = true; |
b226d99b | 954 | |
4f882b2a TG |
955 | return 0; |
956 | } | |
957 | ||
f6fcc1c2 YW |
958 | static bool link_reduces_vlan_mtu(Link *link) { |
959 | /* See netif_reduces_vlan_mtu() in kernel. */ | |
960 | return streq_ptr(link->kind, "macsec"); | |
961 | } | |
962 | ||
963 | static uint32_t link_get_requested_mtu_by_stacked_netdevs(Link *link) { | |
964 | uint32_t mtu = 0; | |
965 | NetDev *dev; | |
f6fcc1c2 | 966 | |
90e74a66 | 967 | HASHMAP_FOREACH(dev, link->network->stacked_netdevs) |
f6fcc1c2 YW |
968 | if (dev->kind == NETDEV_KIND_VLAN && dev->mtu > 0) |
969 | /* See vlan_dev_change_mtu() in kernel. */ | |
970 | mtu = MAX(mtu, link_reduces_vlan_mtu(link) ? dev->mtu + 4 : dev->mtu); | |
971 | ||
972 | else if (dev->kind == NETDEV_KIND_MACVLAN && dev->mtu > mtu) | |
973 | /* See macvlan_change_mtu() in kernel. */ | |
974 | mtu = dev->mtu; | |
975 | ||
976 | return mtu; | |
977 | } | |
978 | ||
979 | static int link_configure_mtu(Link *link) { | |
980 | uint32_t mtu; | |
981 | ||
982 | assert(link); | |
983 | assert(link->network); | |
984 | ||
985 | if (link->network->mtu > 0) | |
986 | return link_set_mtu(link, link->network->mtu); | |
987 | ||
988 | mtu = link_get_requested_mtu_by_stacked_netdevs(link); | |
989 | if (link->mtu >= mtu) | |
990 | return 0; | |
991 | ||
992 | log_link_notice(link, "Bumping MTU bytes from %"PRIu32" to %"PRIu32" because of stacked device. " | |
993 | "If it is not desired, then please explicitly specify MTUBytes= setting.", | |
994 | link->mtu, mtu); | |
995 | ||
996 | return link_set_mtu(link, mtu); | |
997 | } | |
998 | ||
302a796f | 999 | static int set_flags_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
99d2baa2 SS |
1000 | int r; |
1001 | ||
1002 | assert(m); | |
1003 | assert(link); | |
1004 | assert(link->ifname); | |
1005 | ||
1006 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1007 | return 1; | |
1008 | ||
1009 | r = sd_netlink_message_get_errno(m); | |
1010 | if (r < 0) | |
5ecb131d | 1011 | log_link_message_warning_errno(link, m, r, "Could not set link flags, ignoring"); |
99d2baa2 SS |
1012 | |
1013 | return 1; | |
1014 | } | |
1015 | ||
1016 | static int link_set_flags(Link *link) { | |
1017 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1018 | unsigned ifi_change = 0; | |
1019 | unsigned ifi_flags = 0; | |
1020 | int r; | |
1021 | ||
1022 | assert(link); | |
1023 | assert(link->manager); | |
1024 | assert(link->manager->rtnl); | |
1025 | ||
1026 | if (link->flags & IFF_LOOPBACK) | |
1027 | return 0; | |
1028 | ||
1029 | if (!link->network) | |
1030 | return 0; | |
1031 | ||
866e6b7a | 1032 | if (link->network->arp < 0 && link->network->multicast < 0 && link->network->allmulticast < 0) |
99d2baa2 SS |
1033 | return 0; |
1034 | ||
1035 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1036 | if (r < 0) | |
1037 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1038 | ||
1039 | if (link->network->arp >= 0) { | |
1040 | ifi_change |= IFF_NOARP; | |
e6ebebbe SS |
1041 | SET_FLAG(ifi_flags, IFF_NOARP, link->network->arp == 0); |
1042 | } | |
1043 | ||
1044 | if (link->network->multicast >= 0) { | |
1045 | ifi_change |= IFF_MULTICAST; | |
1046 | SET_FLAG(ifi_flags, IFF_MULTICAST, link->network->multicast); | |
99d2baa2 SS |
1047 | } |
1048 | ||
866e6b7a SS |
1049 | if (link->network->allmulticast >= 0) { |
1050 | ifi_change |= IFF_ALLMULTI; | |
1051 | SET_FLAG(ifi_flags, IFF_ALLMULTI, link->network->allmulticast); | |
1052 | } | |
1053 | ||
99d2baa2 SS |
1054 | r = sd_rtnl_message_link_set_flags(req, ifi_flags, ifi_change); |
1055 | if (r < 0) | |
1056 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
1057 | ||
302a796f YW |
1058 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_flags_handler, |
1059 | link_netlink_destroy_callback, link); | |
99d2baa2 SS |
1060 | if (r < 0) |
1061 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1062 | ||
1063 | link_ref(link); | |
1064 | ||
1065 | return 0; | |
1066 | } | |
1067 | ||
e7ab854c TG |
1068 | static int link_acquire_ipv6_conf(Link *link) { |
1069 | int r; | |
1070 | ||
1071 | assert(link); | |
1072 | ||
2ffd6d73 | 1073 | if (link->ndisc) { |
e7ab854c TG |
1074 | log_link_debug(link, "Discovering IPv6 routers"); |
1075 | ||
1e7a0e21 | 1076 | r = sd_ndisc_start(link->ndisc); |
63348d13 | 1077 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1078 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
1079 | } | |
1080 | ||
086b8853 | 1081 | if (link->radv) { |
7465dd22 PF |
1082 | assert(link->radv); |
1083 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); | |
1084 | ||
1085 | log_link_debug(link, "Starting IPv6 Router Advertisements"); | |
1086 | ||
fd3ef936 YW |
1087 | r = radv_emit_dns(link); |
1088 | if (r < 0) | |
1089 | return log_link_warning_errno(link, r, "Failed to configure DNS or Domains in IPv6 Router Advertisement: %m"); | |
1090 | ||
7465dd22 PF |
1091 | r = sd_radv_start(link->radv); |
1092 | if (r < 0 && r != -EBUSY) | |
1093 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Advertisement: %m"); | |
1094 | } | |
1095 | ||
838d39af SS |
1096 | if (link_dhcp6_enabled(link) && IN_SET(link->network->dhcp6_without_ra, |
1097 | DHCP6_CLIENT_START_MODE_INFORMATION_REQUEST, | |
1098 | DHCP6_CLIENT_START_MODE_SOLICIT)) { | |
cd305af1 SS |
1099 | assert(link->dhcp6_client); |
1100 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); | |
1101 | ||
838d39af | 1102 | r = dhcp6_request_address(link, link->network->dhcp6_without_ra == DHCP6_CLIENT_START_MODE_INFORMATION_REQUEST); |
cd305af1 | 1103 | if (r < 0 && r != -EBUSY) |
1633c457 | 1104 | return log_link_warning_errno(link, r, "Could not acquire DHCPv6 lease: %m"); |
cd305af1 SS |
1105 | else |
1106 | log_link_debug(link, "Acquiring DHCPv6 lease"); | |
1107 | } | |
1108 | ||
1633c457 YW |
1109 | r = dhcp6_request_prefix_delegation(link); |
1110 | if (r < 0) | |
1111 | return log_link_warning_errno(link, r, "Failed to request DHCPv6 prefix delegation: %m"); | |
10752343 | 1112 | |
e7ab854c TG |
1113 | return 0; |
1114 | } | |
1115 | ||
6fc25497 | 1116 | static int link_acquire_ipv4_conf(Link *link) { |
ff254138 TG |
1117 | int r; |
1118 | ||
1119 | assert(link); | |
ff254138 TG |
1120 | assert(link->manager); |
1121 | assert(link->manager->event); | |
1122 | ||
910feb78 | 1123 | if (link_ipv4ll_enabled(link, ADDRESS_FAMILY_IPV4)) { |
eb34d4af | 1124 | assert(link->ipv4ll); |
ff254138 | 1125 | |
6a7a4e4d | 1126 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1127 | |
1128 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1129 | if (r < 0) |
1130 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1131 | } |
1132 | ||
2ffd6d73 | 1133 | if (link->dhcp_client) { |
6a7a4e4d | 1134 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1135 | |
5c1d3fc9 | 1136 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1137 | if (r < 0) |
1138 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1139 | } |
ff254138 | 1140 | |
6fc25497 SS |
1141 | return 0; |
1142 | } | |
1143 | ||
1144 | static int link_acquire_conf(Link *link) { | |
1145 | int r; | |
1146 | ||
1147 | assert(link); | |
1148 | ||
1149 | r = link_acquire_ipv4_conf(link); | |
1150 | if (r < 0) | |
1151 | return r; | |
1152 | ||
3f7cc080 | 1153 | if (!in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) { |
6fc25497 SS |
1154 | r = link_acquire_ipv6_conf(link); |
1155 | if (r < 0) | |
1156 | return r; | |
1157 | } | |
1158 | ||
2ffd6d73 YW |
1159 | r = link_lldp_emit_start(link); |
1160 | if (r < 0) | |
1161 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
8e1ad1ea | 1162 | |
ff254138 TG |
1163 | return 0; |
1164 | } | |
1165 | ||
a61bb41c | 1166 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1167 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1168 | ||
a61bb41c | 1169 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1170 | return true; |
1171 | ||
a61bb41c | 1172 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1173 | /* operstate may not be implemented, so fall back to flags */ |
b26ea308 YW |
1174 | if (FLAGS_SET(link->flags, IFF_LOWER_UP | IFF_RUNNING) && |
1175 | !FLAGS_SET(link->flags, IFF_DORMANT)) | |
deb2e523 TG |
1176 | return true; |
1177 | ||
1178 | return false; | |
1179 | } | |
1180 | ||
0e2fdb83 SS |
1181 | static int link_address_genmode_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1182 | int r; | |
1183 | ||
1184 | assert(link); | |
1185 | ||
9524014e DS |
1186 | link->setting_genmode = false; |
1187 | ||
0e2fdb83 SS |
1188 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1189 | return 1; | |
1190 | ||
1191 | r = sd_netlink_message_get_errno(m); | |
1192 | if (r < 0) | |
5ecb131d | 1193 | log_link_message_warning_errno(link, m, r, "Could not set address genmode for interface, ignoring"); |
9524014e DS |
1194 | else |
1195 | log_link_debug(link, "Setting address genmode done."); | |
1196 | ||
1197 | if (link->state == LINK_STATE_INITIALIZED) { | |
1198 | r = link_configure_continue(link); | |
1199 | if (r < 0) | |
1200 | link_enter_failed(link); | |
1201 | } | |
0e2fdb83 SS |
1202 | |
1203 | return 1; | |
1204 | } | |
1205 | ||
1206 | static int link_configure_addrgen_mode(Link *link) { | |
1207 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1208 | uint8_t ipv6ll_mode; | |
1209 | int r; | |
1210 | ||
1211 | assert(link); | |
1212 | assert(link->network); | |
1213 | assert(link->manager); | |
1214 | assert(link->manager->rtnl); | |
1215 | ||
9524014e | 1216 | if (!socket_ipv6_is_supported() || link->setting_genmode) |
9f6e82e6 YW |
1217 | return 0; |
1218 | ||
0e2fdb83 SS |
1219 | log_link_debug(link, "Setting address genmode for link"); |
1220 | ||
1221 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1222 | if (r < 0) | |
1223 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1224 | ||
1225 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); | |
1226 | if (r < 0) | |
1227 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
1228 | ||
1229 | r = sd_netlink_message_open_container(req, AF_INET6); | |
1230 | if (r < 0) | |
1231 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
1232 | ||
1233 | if (!link_ipv6ll_enabled(link)) | |
1234 | ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE; | |
6f6296b9 | 1235 | else if (link->network->ipv6ll_address_gen_mode < 0) { |
a6f1848a SS |
1236 | r = sysctl_read_ip_property(AF_INET6, link->ifname, "stable_secret", NULL); |
1237 | if (r < 0) { | |
1238 | /* The file may not exist. And even if it exists, when stable_secret is unset, | |
1239 | * reading the file fails with EIO. */ | |
1240 | log_link_debug_errno(link, r, "Failed to read sysctl property stable_secret: %m"); | |
1241 | ||
1242 | ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64; | |
1243 | } else | |
1244 | ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
1245 | } else | |
6f6296b9 | 1246 | ipv6ll_mode = link->network->ipv6ll_address_gen_mode; |
0e2fdb83 SS |
1247 | |
1248 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); | |
1249 | if (r < 0) | |
1250 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
1251 | ||
1252 | r = sd_netlink_message_close_container(req); | |
1253 | if (r < 0) | |
1254 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); | |
1255 | ||
1256 | r = sd_netlink_message_close_container(req); | |
1257 | if (r < 0) | |
1258 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
1259 | ||
1260 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_address_genmode_handler, | |
1261 | link_netlink_destroy_callback, link); | |
1262 | if (r < 0) | |
1263 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1264 | ||
1265 | link_ref(link); | |
9524014e | 1266 | link->setting_genmode = true; |
0e2fdb83 SS |
1267 | |
1268 | return 0; | |
1269 | } | |
1270 | ||
302a796f | 1271 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
dd3efc09 TG |
1272 | int r; |
1273 | ||
1746cf2a TG |
1274 | assert(link); |
1275 | ||
5da8149f | 1276 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1277 | return 1; |
1278 | ||
1c4baffc | 1279 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d | 1280 | if (r < 0) |
26d6b214 | 1281 | /* we warn but don't fail the link, as it may be brought up later */ |
5ecb131d | 1282 | log_link_message_warning_errno(link, m, r, "Could not bring up interface"); |
45ad2c13 | 1283 | |
f882c247 TG |
1284 | return 1; |
1285 | } | |
1286 | ||
1cc84f3b | 1287 | static int link_up(Link *link) { |
4afd3348 | 1288 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
f579559b TG |
1289 | int r; |
1290 | ||
f882c247 | 1291 | assert(link); |
c106cc36 | 1292 | assert(link->network); |
f882c247 TG |
1293 | assert(link->manager); |
1294 | assert(link->manager->rtnl); | |
1295 | ||
6a7a4e4d | 1296 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1297 | |
6a7a4e4d LP |
1298 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1299 | if (r < 0) | |
1300 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1301 | |
2b2d8603 | 1302 | /* set it free if not enslaved with networkd */ |
6cb955c6 | 1303 | if (!link->network->bridge && !link->network->bond && !link->network->vrf) { |
2b2d8603 TY |
1304 | r = sd_netlink_message_append_u32(req, IFLA_MASTER, 0); |
1305 | if (r < 0) | |
1306 | return log_link_error_errno(link, r, "Could not append IFLA_MASTER attribute: %m"); | |
1307 | } | |
1308 | ||
5d4795f3 | 1309 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1310 | if (r < 0) |
1311 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1312 | |
c106cc36 | 1313 | if (link->network->mac) { |
1c4baffc | 1314 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1315 | if (r < 0) |
1316 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1317 | } |
1318 | ||
302a796f YW |
1319 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_up_handler, |
1320 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1321 | if (r < 0) |
1322 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1323 | |
b226d99b TG |
1324 | link_ref(link); |
1325 | ||
f882c247 TG |
1326 | return 0; |
1327 | } | |
1328 | ||
302a796f | 1329 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
0d4ad91d AR |
1330 | int r; |
1331 | ||
1332 | assert(link); | |
1333 | ||
1334 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1335 | return 1; | |
1336 | ||
1c4baffc | 1337 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1338 | if (r < 0) |
5ecb131d | 1339 | log_link_message_warning_errno(link, m, r, "Could not bring down interface"); |
0d4ad91d AR |
1340 | |
1341 | return 1; | |
1342 | } | |
1343 | ||
8e54db83 | 1344 | int link_down(Link *link, link_netlink_message_handler_t callback) { |
4afd3348 | 1345 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
0d4ad91d AR |
1346 | int r; |
1347 | ||
1348 | assert(link); | |
1349 | assert(link->manager); | |
1350 | assert(link->manager->rtnl); | |
1351 | ||
6a7a4e4d | 1352 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1353 | |
1354 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1355 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1356 | if (r < 0) |
1357 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1358 | |
1359 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1360 | if (r < 0) |
1361 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1362 | |
8e54db83 YW |
1363 | r = netlink_call_async(link->manager->rtnl, NULL, req, |
1364 | callback ?: link_down_handler, | |
302a796f | 1365 | link_netlink_destroy_callback, link); |
6a7a4e4d LP |
1366 | if (r < 0) |
1367 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1368 | |
1369 | link_ref(link); | |
1370 | ||
1371 | return 0; | |
1372 | } | |
1373 | ||
89fe6535 SS |
1374 | static int link_group_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1375 | int r; | |
1376 | ||
1377 | assert(link); | |
1378 | ||
1379 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1380 | return 1; | |
1381 | ||
1382 | r = sd_netlink_message_get_errno(m); | |
1383 | if (r < 0) | |
1384 | log_link_message_warning_errno(link, m, r, "Could not set group for the interface"); | |
1385 | ||
1386 | return 1; | |
1387 | } | |
1388 | ||
1389 | static int link_set_group(Link *link) { | |
1390 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1391 | int r; | |
1392 | ||
1393 | assert(link); | |
1394 | assert(link->network); | |
1395 | assert(link->manager); | |
1396 | assert(link->manager->rtnl); | |
1397 | ||
1398 | if (link->network->group <= 0) | |
1399 | return 0; | |
1400 | ||
1401 | log_link_debug(link, "Setting group"); | |
1402 | ||
1403 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1404 | if (r < 0) | |
1405 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1406 | ||
1407 | r = sd_netlink_message_append_u32(req, IFLA_GROUP, link->network->group); | |
1408 | if (r < 0) | |
1409 | return log_link_error_errno(link, r, "Could not set link group: %m"); | |
1410 | ||
1411 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_group_handler, | |
1412 | link_netlink_destroy_callback, link); | |
1413 | if (r < 0) | |
1414 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1415 | ||
1416 | link_ref(link); | |
1417 | ||
1418 | return 0; | |
1419 | } | |
1420 | ||
0d4ad91d AR |
1421 | static int link_handle_bound_to_list(Link *link) { |
1422 | Link *l; | |
0d4ad91d AR |
1423 | int r; |
1424 | bool required_up = false; | |
1425 | bool link_is_up = false; | |
1426 | ||
1427 | assert(link); | |
1428 | ||
1429 | if (hashmap_isempty(link->bound_to_links)) | |
1430 | return 0; | |
1431 | ||
1432 | if (link->flags & IFF_UP) | |
1433 | link_is_up = true; | |
1434 | ||
90e74a66 | 1435 | HASHMAP_FOREACH (l, link->bound_to_links) |
0d4ad91d AR |
1436 | if (link_has_carrier(l)) { |
1437 | required_up = true; | |
1438 | break; | |
1439 | } | |
1440 | ||
1441 | if (!required_up && link_is_up) { | |
8e54db83 | 1442 | r = link_down(link, NULL); |
0d4ad91d AR |
1443 | if (r < 0) |
1444 | return r; | |
1445 | } else if (required_up && !link_is_up) { | |
1446 | r = link_up(link); | |
1447 | if (r < 0) | |
1448 | return r; | |
1449 | } | |
1450 | ||
1451 | return 0; | |
1452 | } | |
1453 | ||
1454 | static int link_handle_bound_by_list(Link *link) { | |
0d4ad91d AR |
1455 | Link *l; |
1456 | int r; | |
1457 | ||
1458 | assert(link); | |
1459 | ||
1460 | if (hashmap_isempty(link->bound_by_links)) | |
1461 | return 0; | |
1462 | ||
90e74a66 | 1463 | HASHMAP_FOREACH (l, link->bound_by_links) { |
0d4ad91d AR |
1464 | r = link_handle_bound_to_list(l); |
1465 | if (r < 0) | |
1466 | return r; | |
1467 | } | |
1468 | ||
1469 | return 0; | |
1470 | } | |
1471 | ||
1472 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1473 | int r; | |
1474 | ||
1475 | assert(link); | |
1476 | assert(carrier); | |
1477 | ||
1478 | if (link == carrier) | |
1479 | return 0; | |
1480 | ||
1481 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1482 | return 0; | |
1483 | ||
1484 | r = hashmap_ensure_allocated(h, NULL); | |
1485 | if (r < 0) | |
1486 | return r; | |
1487 | ||
1488 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1489 | if (r < 0) | |
1490 | return r; | |
1491 | ||
1492 | return 0; | |
1493 | } | |
1494 | ||
1495 | static int link_new_bound_by_list(Link *link) { | |
1496 | Manager *m; | |
1497 | Link *carrier; | |
0d4ad91d AR |
1498 | int r; |
1499 | bool list_updated = false; | |
1500 | ||
1501 | assert(link); | |
1502 | assert(link->manager); | |
1503 | ||
1504 | m = link->manager; | |
1505 | ||
90e74a66 | 1506 | HASHMAP_FOREACH(carrier, m->links) { |
0d4ad91d AR |
1507 | if (!carrier->network) |
1508 | continue; | |
1509 | ||
1510 | if (strv_isempty(carrier->network->bind_carrier)) | |
1511 | continue; | |
1512 | ||
191a3f16 | 1513 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname)) { |
0d4ad91d AR |
1514 | r = link_put_carrier(link, carrier, &link->bound_by_links); |
1515 | if (r < 0) | |
1516 | return r; | |
1517 | ||
1518 | list_updated = true; | |
1519 | } | |
1520 | } | |
1521 | ||
1522 | if (list_updated) | |
84de38c5 | 1523 | link_dirty(link); |
0d4ad91d | 1524 | |
90e74a66 | 1525 | HASHMAP_FOREACH(carrier, link->bound_by_links) { |
0d4ad91d AR |
1526 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
1527 | if (r < 0) | |
1528 | return r; | |
1529 | ||
84de38c5 | 1530 | link_dirty(carrier); |
0d4ad91d AR |
1531 | } |
1532 | ||
1533 | return 0; | |
1534 | } | |
1535 | ||
1536 | static int link_new_bound_to_list(Link *link) { | |
1537 | Manager *m; | |
1538 | Link *carrier; | |
0d4ad91d AR |
1539 | int r; |
1540 | bool list_updated = false; | |
1541 | ||
1542 | assert(link); | |
1543 | assert(link->manager); | |
1544 | ||
1545 | if (!link->network) | |
1546 | return 0; | |
1547 | ||
1548 | if (strv_isempty(link->network->bind_carrier)) | |
1549 | return 0; | |
1550 | ||
1551 | m = link->manager; | |
1552 | ||
90e74a66 | 1553 | HASHMAP_FOREACH (carrier, m->links) { |
191a3f16 | 1554 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname)) { |
0d4ad91d AR |
1555 | r = link_put_carrier(link, carrier, &link->bound_to_links); |
1556 | if (r < 0) | |
1557 | return r; | |
1558 | ||
1559 | list_updated = true; | |
1560 | } | |
1561 | } | |
1562 | ||
1563 | if (list_updated) | |
84de38c5 | 1564 | link_dirty(link); |
0d4ad91d | 1565 | |
90e74a66 | 1566 | HASHMAP_FOREACH (carrier, link->bound_to_links) { |
0d4ad91d AR |
1567 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); |
1568 | if (r < 0) | |
1569 | return r; | |
1570 | ||
84de38c5 | 1571 | link_dirty(carrier); |
0d4ad91d AR |
1572 | } |
1573 | ||
1574 | return 0; | |
1575 | } | |
1576 | ||
1577 | static int link_new_carrier_maps(Link *link) { | |
1578 | int r; | |
1579 | ||
1580 | r = link_new_bound_by_list(link); | |
1581 | if (r < 0) | |
1582 | return r; | |
1583 | ||
1584 | r = link_handle_bound_by_list(link); | |
1585 | if (r < 0) | |
1586 | return r; | |
1587 | ||
1588 | r = link_new_bound_to_list(link); | |
1589 | if (r < 0) | |
1590 | return r; | |
1591 | ||
1592 | r = link_handle_bound_to_list(link); | |
1593 | if (r < 0) | |
1594 | return r; | |
1595 | ||
1596 | return 0; | |
1597 | } | |
1598 | ||
1599 | static void link_free_bound_to_list(Link *link) { | |
1600 | Link *bound_to; | |
0d4ad91d | 1601 | |
90e74a66 | 1602 | HASHMAP_FOREACH (bound_to, link->bound_to_links) { |
0d4ad91d AR |
1603 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); |
1604 | ||
1605 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1606 | link_dirty(bound_to); |
0d4ad91d AR |
1607 | } |
1608 | ||
1609 | return; | |
1610 | } | |
1611 | ||
1612 | static void link_free_bound_by_list(Link *link) { | |
1613 | Link *bound_by; | |
0d4ad91d | 1614 | |
90e74a66 | 1615 | HASHMAP_FOREACH (bound_by, link->bound_by_links) { |
0d4ad91d AR |
1616 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); |
1617 | ||
1618 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1619 | link_dirty(bound_by); |
0d4ad91d AR |
1620 | link_handle_bound_to_list(bound_by); |
1621 | } | |
1622 | } | |
1623 | ||
1624 | return; | |
1625 | } | |
1626 | ||
1627 | static void link_free_carrier_maps(Link *link) { | |
1628 | bool list_updated = false; | |
1629 | ||
1630 | assert(link); | |
1631 | ||
1632 | if (!hashmap_isempty(link->bound_to_links)) { | |
1633 | link_free_bound_to_list(link); | |
1634 | list_updated = true; | |
1635 | } | |
1636 | ||
1637 | if (!hashmap_isempty(link->bound_by_links)) { | |
1638 | link_free_bound_by_list(link); | |
1639 | list_updated = true; | |
1640 | } | |
1641 | ||
1642 | if (list_updated) | |
84de38c5 | 1643 | link_dirty(link); |
0d4ad91d AR |
1644 | |
1645 | return; | |
1646 | } | |
1647 | ||
5f707e12 YW |
1648 | static int link_append_to_master(Link *link, NetDev *netdev) { |
1649 | Link *master; | |
1650 | int r; | |
1651 | ||
1652 | assert(link); | |
1653 | assert(netdev); | |
1654 | ||
1655 | r = link_get(link->manager, netdev->ifindex, &master); | |
1656 | if (r < 0) | |
1657 | return r; | |
1658 | ||
de7fef4b | 1659 | r = set_ensure_put(&master->slaves, NULL, link); |
38288f0b | 1660 | if (r <= 0) |
5f707e12 YW |
1661 | return r; |
1662 | ||
1663 | link_ref(link); | |
1664 | return 0; | |
1665 | } | |
1666 | ||
1667 | static void link_drop_from_master(Link *link, NetDev *netdev) { | |
1668 | Link *master; | |
1669 | ||
1670 | assert(link); | |
1671 | ||
1672 | if (!link->manager || !netdev) | |
1673 | return; | |
1674 | ||
1675 | if (link_get(link->manager, netdev->ifindex, &master) < 0) | |
1676 | return; | |
1677 | ||
1678 | link_unref(set_remove(master->slaves, link)); | |
1679 | } | |
1680 | ||
1681 | static void link_detach_from_manager(Link *link) { | |
1682 | if (!link || !link->manager) | |
1683 | return; | |
1684 | ||
1685 | link_unref(set_remove(link->manager->links_requesting_uuid, link)); | |
1686 | link_clean(link); | |
1687 | ||
1688 | /* The following must be called at last. */ | |
1689 | assert_se(hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)) == link); | |
1690 | link_unref(link); | |
1691 | } | |
1692 | ||
0d4ad91d AR |
1693 | void link_drop(Link *link) { |
1694 | if (!link || link->state == LINK_STATE_LINGER) | |
1695 | return; | |
1696 | ||
1697 | link_set_state(link, LINK_STATE_LINGER); | |
1698 | ||
1699 | link_free_carrier_maps(link); | |
1700 | ||
5f707e12 YW |
1701 | if (link->network) { |
1702 | link_drop_from_master(link, link->network->bridge); | |
1703 | link_drop_from_master(link, link->network->bond); | |
1704 | } | |
1705 | ||
6a7a4e4d | 1706 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1707 | |
db2f8a2e | 1708 | (void) unlink(link->state_file); |
c4397d94 | 1709 | link_detach_from_manager(link); |
0d4ad91d AR |
1710 | } |
1711 | ||
3f265037 | 1712 | static int link_joined(Link *link) { |
f882c247 TG |
1713 | int r; |
1714 | ||
ef1ba606 | 1715 | assert(link); |
f5be5601 | 1716 | assert(link->network); |
dd3efc09 | 1717 | |
0d4ad91d AR |
1718 | if (!hashmap_isempty(link->bound_to_links)) { |
1719 | r = link_handle_bound_to_list(link); | |
1720 | if (r < 0) | |
1721 | return r; | |
1722 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1723 | r = link_up(link); |
1724 | if (r < 0) { | |
1725 | link_enter_failed(link); | |
1726 | return r; | |
1727 | } | |
ef1ba606 | 1728 | } |
f882c247 | 1729 | |
9ed794a3 | 1730 | if (link->network->bridge) { |
e1853b00 | 1731 | r = link_set_bridge(link); |
6a7a4e4d LP |
1732 | if (r < 0) |
1733 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
45e11abf YW |
1734 | |
1735 | r = link_append_to_master(link, link->network->bridge); | |
1736 | if (r < 0) | |
1737 | log_link_error_errno(link, r, "Failed to add to bridge master's slave list: %m"); | |
e1853b00 SS |
1738 | } |
1739 | ||
eb64b435 | 1740 | if (link->network->bond) { |
7fcee284 | 1741 | r = link_set_bond(link); |
eb64b435 SS |
1742 | if (r < 0) |
1743 | log_link_error_errno(link, r, "Could not set bond message: %m"); | |
959f65d3 | 1744 | |
45e11abf | 1745 | r = link_append_to_master(link, link->network->bond); |
959f65d3 YW |
1746 | if (r < 0) |
1747 | log_link_error_errno(link, r, "Failed to add to bond master's slave list: %m"); | |
eb64b435 SS |
1748 | } |
1749 | ||
34d7f2c9 YW |
1750 | r = link_set_bridge_vlan(link); |
1751 | if (r < 0) | |
1752 | log_link_error_errno(link, r, "Could not set bridge vlan: %m"); | |
13b498f9 | 1753 | |
c1835a42 RM |
1754 | /* Skip setting up addresses until it gets carrier, |
1755 | or it would try to set addresses twice, | |
1756 | which is bad for non-idempotent steps. */ | |
dad2d78e | 1757 | if (!link_has_carrier(link) && !link->network->configure_without_carrier) |
c1835a42 RM |
1758 | return 0; |
1759 | ||
b425c3ae | 1760 | link_set_state(link, LINK_STATE_CONFIGURING); |
682c65b0 | 1761 | return link_set_static_configs(link); |
02b59d57 TG |
1762 | } |
1763 | ||
302a796f | 1764 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
02b59d57 TG |
1765 | int r; |
1766 | ||
1746cf2a | 1767 | assert(link); |
ef1ba606 | 1768 | assert(link->network); |
34bf3c00 | 1769 | assert(link->enslaving > 0); |
02b59d57 | 1770 | |
313cefa1 | 1771 | link->enslaving--; |
52433f6b | 1772 | |
5da8149f | 1773 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1774 | return 1; |
1775 | ||
1c4baffc | 1776 | r = sd_netlink_message_get_errno(m); |
856f962c | 1777 | if (r < 0 && r != -EEXIST) { |
5ecb131d | 1778 | log_link_message_warning_errno(link, m, r, "Could not join netdev"); |
ef1ba606 TG |
1779 | link_enter_failed(link); |
1780 | return 1; | |
4ff296b0 YW |
1781 | } |
1782 | ||
1783 | log_link_debug(link, "Joined netdev"); | |
02b59d57 | 1784 | |
34bf3c00 | 1785 | if (link->enslaving == 0) { |
4ff296b0 YW |
1786 | r = link_joined(link); |
1787 | if (r < 0) | |
1788 | link_enter_failed(link); | |
34bf3c00 | 1789 | } |
02b59d57 TG |
1790 | |
1791 | return 1; | |
1792 | } | |
1793 | ||
3f265037 | 1794 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1795 | NetDev *netdev; |
02b59d57 TG |
1796 | int r; |
1797 | ||
1798 | assert(link); | |
1799 | assert(link->network); | |
bd08ce56 | 1800 | assert(link->state == LINK_STATE_INITIALIZED); |
02b59d57 | 1801 | |
289e6774 | 1802 | link_set_state(link, LINK_STATE_CONFIGURING); |
02b59d57 | 1803 | |
84de38c5 | 1804 | link_dirty(link); |
34bf3c00 | 1805 | link->enslaving = 0; |
02b59d57 | 1806 | |
d9c67ea1 | 1807 | if (link->network->bond) { |
cbff7170 TJ |
1808 | if (link->network->bond->state == NETDEV_STATE_READY && |
1809 | link->network->bond->ifindex == link->master_ifindex) | |
1810 | return link_joined(link); | |
1811 | ||
f2341e0a LP |
1812 | log_struct(LOG_DEBUG, |
1813 | LOG_LINK_INTERFACE(link), | |
1814 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 1815 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname)); |
f2341e0a | 1816 | |
34bf3c00 YW |
1817 | link->enslaving++; |
1818 | ||
f2341e0a | 1819 | r = netdev_join(link->network->bond, link, netdev_join_handler); |
52433f6b | 1820 | if (r < 0) { |
f2341e0a LP |
1821 | log_struct_errno(LOG_WARNING, r, |
1822 | LOG_LINK_INTERFACE(link), | |
1823 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 1824 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname)); |
52433f6b TG |
1825 | link_enter_failed(link); |
1826 | return r; | |
1827 | } | |
0ad6148e MO |
1828 | } |
1829 | ||
d9c67ea1 | 1830 | if (link->network->bridge) { |
f2341e0a LP |
1831 | log_struct(LOG_DEBUG, |
1832 | LOG_LINK_INTERFACE(link), | |
1833 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 1834 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname)); |
f2341e0a | 1835 | |
34bf3c00 YW |
1836 | link->enslaving++; |
1837 | ||
f2341e0a | 1838 | r = netdev_join(link->network->bridge, link, netdev_join_handler); |
0ad6148e | 1839 | if (r < 0) { |
f2341e0a LP |
1840 | log_struct_errno(LOG_WARNING, r, |
1841 | LOG_LINK_INTERFACE(link), | |
1842 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 1843 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname)); |
0ad6148e MO |
1844 | link_enter_failed(link); |
1845 | return r; | |
1846 | } | |
52433f6b TG |
1847 | } |
1848 | ||
6cb955c6 AR |
1849 | if (link->network->vrf) { |
1850 | log_struct(LOG_DEBUG, | |
1851 | LOG_LINK_INTERFACE(link), | |
1852 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 ZJS |
1853 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->vrf->ifname)); |
1854 | ||
34bf3c00 YW |
1855 | link->enslaving++; |
1856 | ||
6cb955c6 AR |
1857 | r = netdev_join(link->network->vrf, link, netdev_join_handler); |
1858 | if (r < 0) { | |
1859 | log_struct_errno(LOG_WARNING, r, | |
1860 | LOG_LINK_INTERFACE(link), | |
1861 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 | 1862 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->vrf->ifname)); |
6cb955c6 AR |
1863 | link_enter_failed(link); |
1864 | return r; | |
1865 | } | |
6cb955c6 AR |
1866 | } |
1867 | ||
90e74a66 | 1868 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
7951dea2 | 1869 | |
2b6db913 YW |
1870 | if (netdev->ifindex > 0) |
1871 | /* Assume already enslaved. */ | |
a63e5daa | 1872 | continue; |
a63e5daa | 1873 | |
7033af49 YW |
1874 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_STACKED) |
1875 | continue; | |
1876 | ||
f2341e0a LP |
1877 | log_struct(LOG_DEBUG, |
1878 | LOG_LINK_INTERFACE(link), | |
1879 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 1880 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); |
f2341e0a | 1881 | |
34bf3c00 YW |
1882 | link->enslaving++; |
1883 | ||
f2341e0a | 1884 | r = netdev_join(netdev, link, netdev_join_handler); |
7951dea2 | 1885 | if (r < 0) { |
f2341e0a LP |
1886 | log_struct_errno(LOG_WARNING, r, |
1887 | LOG_LINK_INTERFACE(link), | |
1888 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 1889 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); |
326cb406 SS |
1890 | link_enter_failed(link); |
1891 | return r; | |
1892 | } | |
326cb406 SS |
1893 | } |
1894 | ||
34bf3c00 YW |
1895 | if (link->enslaving == 0) |
1896 | return link_joined(link); | |
1897 | ||
ef1ba606 TG |
1898 | return 0; |
1899 | } | |
1900 | ||
5e5b137a | 1901 | static int link_drop_foreign_config(Link *link) { |
5e5b137a TG |
1902 | int r; |
1903 | ||
f8f2f880 YW |
1904 | r = link_drop_foreign_addresses(link); |
1905 | if (r < 0) | |
1906 | return r; | |
5e5b137a | 1907 | |
59048336 YW |
1908 | r = link_drop_foreign_neighbors(link); |
1909 | if (r < 0) | |
1910 | return r; | |
d1bdafd2 | 1911 | |
779804dd | 1912 | return link_drop_foreign_routes(link); |
5e5b137a TG |
1913 | } |
1914 | ||
3104883d | 1915 | static int link_drop_config(Link *link) { |
3104883d SS |
1916 | int r; |
1917 | ||
d7fbb9f5 YW |
1918 | r = link_drop_addresses(link); |
1919 | if (r < 0) | |
1920 | return r; | |
3104883d | 1921 | |
59048336 YW |
1922 | r = link_drop_neighbors(link); |
1923 | if (r < 0) | |
1924 | return r; | |
d1bdafd2 | 1925 | |
62f0ea5f YW |
1926 | r = link_drop_routes(link); |
1927 | if (r < 0) | |
1928 | return r; | |
3104883d | 1929 | |
c69305ff LP |
1930 | ndisc_flush(link); |
1931 | ||
3104883d SS |
1932 | return 0; |
1933 | } | |
1934 | ||
256c75fd | 1935 | int link_configure(Link *link) { |
4ecdcb07 YW |
1936 | int r; |
1937 | ||
ef1ba606 | 1938 | assert(link); |
b22d8a00 | 1939 | assert(link->network); |
bd08ce56 | 1940 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 1941 | |
34658df2 | 1942 | r = link_configure_traffic_control(link); |
4ecdcb07 YW |
1943 | if (r < 0) |
1944 | return r; | |
1945 | ||
518cd6b5 SS |
1946 | r = link_configure_sr_iov(link); |
1947 | if (r < 0) | |
1948 | return r; | |
1949 | ||
500b96eb | 1950 | if (link->iftype == ARPHRD_CAN) |
93ea7750 | 1951 | return link_configure_can(link); |
92c918b0 | 1952 | |
5e0534f1 | 1953 | r = link_set_sysctl(link); |
b69c3180 SS |
1954 | if (r < 0) |
1955 | return r; | |
8749cbcd | 1956 | |
5e0534f1 | 1957 | r = link_set_ipv6_proxy_ndp_addresses(link); |
94d76d07 YW |
1958 | if (r < 0) |
1959 | return r; | |
1960 | ||
99d2baa2 SS |
1961 | r = link_set_flags(link); |
1962 | if (r < 0) | |
1963 | return r; | |
1964 | ||
89fe6535 SS |
1965 | r = link_set_group(link); |
1966 | if (r < 0) | |
1967 | return r; | |
1968 | ||
2ffd6d73 YW |
1969 | r = ipv4ll_configure(link); |
1970 | if (r < 0) | |
1971 | return r; | |
64b21ece | 1972 | |
2ffd6d73 YW |
1973 | r = dhcp4_configure(link); |
1974 | if (r < 0) | |
1975 | return r; | |
eb34d4af | 1976 | |
2ffd6d73 YW |
1977 | r = dhcp6_configure(link); |
1978 | if (r < 0) | |
1979 | return r; | |
f5a8c43f | 1980 | |
2ffd6d73 YW |
1981 | r = ndisc_configure(link); |
1982 | if (r < 0) | |
1983 | return r; | |
4138fb2c | 1984 | |
086b8853 YW |
1985 | r = radv_configure(link); |
1986 | if (r < 0) | |
1987 | return r; | |
7465dd22 | 1988 | |
2ffd6d73 YW |
1989 | r = link_lldp_rx_configure(link); |
1990 | if (r < 0) | |
1991 | return r; | |
ce43e484 | 1992 | |
f6fcc1c2 | 1993 | r = link_configure_mtu(link); |
40288ece YW |
1994 | if (r < 0) |
1995 | return r; | |
44b598a1 | 1996 | |
9f6e82e6 YW |
1997 | r = link_configure_addrgen_mode(link); |
1998 | if (r < 0) | |
1999 | return r; | |
0e2fdb83 | 2000 | |
051e77ca SS |
2001 | r = link_configure_ipv4_dad(link); |
2002 | if (r < 0) | |
2003 | return r; | |
2004 | ||
3a390124 DS |
2005 | return link_configure_continue(link); |
2006 | } | |
2007 | ||
2008 | /* The configuration continues in this separate function, instead of | |
2009 | * including this in the above link_configure() function, for two | |
2010 | * reasons: | |
2011 | * 1) some devices reset the link when the mtu is set, which caused | |
2012 | * an infinite loop here in networkd; see: | |
2013 | * https://github.com/systemd/systemd/issues/6593 | |
2014 | * https://github.com/systemd/systemd/issues/9831 | |
2015 | * 2) if ipv6ll is disabled, then bringing the interface up must be | |
2016 | * delayed until after we get confirmation from the kernel that | |
2017 | * the addr_gen_mode parameter has been set (via netlink), see: | |
2018 | * https://github.com/systemd/systemd/issues/13882 | |
2019 | */ | |
2020 | static int link_configure_continue(Link *link) { | |
55dc8c4a YW |
2021 | int r; |
2022 | ||
2023 | assert(link); | |
2024 | assert(link->network); | |
bd08ce56 | 2025 | assert(link->state == LINK_STATE_INITIALIZED); |
55dc8c4a | 2026 | |
9524014e | 2027 | if (link->setting_mtu || link->setting_genmode) |
55dc8c4a YW |
2028 | return 0; |
2029 | ||
4c649652 DS |
2030 | /* Drop foreign config, but ignore loopback or critical devices. |
2031 | * We do not want to remove loopback address or addresses used for root NFS. */ | |
2032 | if (!(link->flags & IFF_LOOPBACK) && | |
2033 | link->network->keep_configuration != KEEP_CONFIGURATION_YES) { | |
2034 | r = link_drop_foreign_config(link); | |
2035 | if (r < 0) | |
2036 | return r; | |
2037 | } | |
2038 | ||
d236718c DS |
2039 | /* The kernel resets ipv6 mtu after changing device mtu; |
2040 | * we must set this here, after we've set device mtu */ | |
2041 | r = link_set_ipv6_mtu(link); | |
2042 | if (r < 0) | |
5e0534f1 | 2043 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface, ignoring: %m"); |
d236718c | 2044 | |
dad2d78e | 2045 | if (link_has_carrier(link) || link->network->configure_without_carrier) { |
1e9be60b TG |
2046 | r = link_acquire_conf(link); |
2047 | if (r < 0) | |
2048 | return r; | |
cc544d5f | 2049 | } |
1e9be60b | 2050 | |
3f265037 | 2051 | return link_enter_join_netdev(link); |
505f8da7 TG |
2052 | } |
2053 | ||
572b21d9 | 2054 | static int link_reconfigure_internal(Link *link, sd_netlink_message *m, bool force) { |
ad932b15 YW |
2055 | Network *network; |
2056 | int r; | |
2057 | ||
572b21d9 YW |
2058 | if (m) { |
2059 | _cleanup_strv_free_ char **s = NULL; | |
2060 | ||
2061 | r = sd_netlink_message_get_errno(m); | |
2062 | if (r < 0) | |
2063 | return r; | |
2064 | ||
2065 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); | |
2066 | if (r < 0 && r != -ENODATA) | |
2067 | return r; | |
2068 | ||
2069 | strv_free_and_replace(link->alternative_names, s); | |
2070 | } | |
2071 | ||
c643bda5 YW |
2072 | r = network_get(link->manager, link->iftype, link->sd_device, |
2073 | link->ifname, link->alternative_names, link->driver, | |
2074 | &link->mac, &link->permanent_mac, | |
2075 | link->wlan_iftype, link->ssid, &link->bssid, &network); | |
ad932b15 YW |
2076 | if (r == -ENOENT) { |
2077 | link_enter_unmanaged(link); | |
2078 | return 0; | |
2079 | } else if (r == 0 && network->unmanaged) { | |
2080 | link_enter_unmanaged(link); | |
2081 | return 0; | |
2082 | } else if (r < 0) | |
2083 | return r; | |
2084 | ||
99b8517c | 2085 | if (link->network == network && !force) |
ad932b15 YW |
2086 | return 0; |
2087 | ||
2088 | log_link_info(link, "Re-configuring with %s", network->filename); | |
2089 | ||
2090 | /* Dropping old .network file */ | |
2091 | r = link_stop_clients(link, false); | |
572b21d9 | 2092 | if (r < 0) |
ad932b15 | 2093 | return r; |
ad932b15 | 2094 | |
5ae0fb7f | 2095 | if (link->dhcp_server) |
ad932b15 YW |
2096 | (void) sd_dhcp_server_stop(link->dhcp_server); |
2097 | ||
2098 | r = link_drop_config(link); | |
2099 | if (r < 0) | |
2100 | return r; | |
2101 | ||
2c7b826d | 2102 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
ad932b15 YW |
2103 | log_link_debug(link, "State is %s, dropping config", link_state_to_string(link->state)); |
2104 | r = link_drop_foreign_config(link); | |
2105 | if (r < 0) | |
2106 | return r; | |
2107 | } | |
2108 | ||
2109 | link_free_carrier_maps(link); | |
2110 | link_free_engines(link); | |
2111 | link->network = network_unref(link->network); | |
2112 | ||
2113 | /* Then, apply new .network file */ | |
2114 | r = network_apply(network, link); | |
2115 | if (r < 0) | |
2116 | return r; | |
2117 | ||
2118 | r = link_new_carrier_maps(link); | |
2119 | if (r < 0) | |
2120 | return r; | |
2121 | ||
2122 | link_set_state(link, LINK_STATE_INITIALIZED); | |
8ae7b8a1 | 2123 | link_dirty(link); |
ad932b15 YW |
2124 | |
2125 | /* link_configure_duid() returns 0 if it requests product UUID. In that case, | |
2126 | * link_configure() is called later asynchronously. */ | |
2127 | r = link_configure_duid(link); | |
2128 | if (r <= 0) | |
2129 | return r; | |
2130 | ||
2131 | r = link_configure(link); | |
2132 | if (r < 0) | |
2133 | return r; | |
2134 | ||
2135 | return 0; | |
2136 | } | |
2137 | ||
572b21d9 YW |
2138 | static int link_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
2139 | int r; | |
2140 | ||
2141 | r = link_reconfigure_internal(link, m, false); | |
2142 | if (r < 0) | |
2143 | link_enter_failed(link); | |
2144 | ||
2145 | return 1; | |
2146 | } | |
2147 | ||
2148 | static int link_force_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
2149 | int r; | |
2150 | ||
2151 | r = link_reconfigure_internal(link, m, true); | |
2152 | if (r < 0) | |
2153 | link_enter_failed(link); | |
2154 | ||
2155 | return 1; | |
2156 | } | |
2157 | ||
2158 | int link_reconfigure(Link *link, bool force) { | |
2159 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
2160 | int r; | |
2161 | ||
2c0d7ed3 YW |
2162 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_LINGER)) |
2163 | return 0; | |
2164 | ||
572b21d9 YW |
2165 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2166 | link->ifindex); | |
2167 | if (r < 0) | |
2168 | return r; | |
2169 | ||
2170 | r = netlink_call_async(link->manager->rtnl, NULL, req, | |
2171 | force ? link_force_reconfigure_handler : link_reconfigure_handler, | |
2172 | link_netlink_destroy_callback, link); | |
2173 | if (r < 0) | |
2174 | return r; | |
2175 | ||
2176 | link_ref(link); | |
2177 | ||
2178 | return 0; | |
2179 | } | |
2180 | ||
e6bf7774 | 2181 | static int link_initialized_and_synced(Link *link) { |
505f8da7 | 2182 | Network *network; |
505f8da7 TG |
2183 | int r; |
2184 | ||
2185 | assert(link); | |
2186 | assert(link->ifname); | |
2187 | assert(link->manager); | |
2188 | ||
bd08ce56 YW |
2189 | /* We may get called either from the asynchronous netlink callback, |
2190 | * or directly for link_add() if running in a container. See link_add(). */ | |
2191 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) | |
4232cf04 | 2192 | return 0; |
505f8da7 | 2193 | |
6a7a4e4d | 2194 | log_link_debug(link, "Link state is up-to-date"); |
bd08ce56 | 2195 | link_set_state(link, LINK_STATE_INITIALIZED); |
505f8da7 | 2196 | |
0d4ad91d AR |
2197 | r = link_new_bound_by_list(link); |
2198 | if (r < 0) | |
2199 | return r; | |
2200 | ||
2201 | r = link_handle_bound_by_list(link); | |
2202 | if (r < 0) | |
2203 | return r; | |
2204 | ||
c4a03a56 | 2205 | if (!link->network) { |
0894cfe4 | 2206 | r = wifi_get_info(link); |
8d968fdd YW |
2207 | if (r < 0) |
2208 | return r; | |
2209 | ||
c643bda5 YW |
2210 | r = network_get(link->manager, link->iftype, link->sd_device, |
2211 | link->ifname, link->alternative_names, link->driver, | |
2212 | &link->mac, &link->permanent_mac, | |
2213 | link->wlan_iftype, link->ssid, &link->bssid, &network); | |
c4a03a56 TG |
2214 | if (r == -ENOENT) { |
2215 | link_enter_unmanaged(link); | |
4232cf04 | 2216 | return 0; |
a09dc546 DM |
2217 | } else if (r == 0 && network->unmanaged) { |
2218 | link_enter_unmanaged(link); | |
2219 | return 0; | |
c4a03a56 TG |
2220 | } else if (r < 0) |
2221 | return r; | |
505f8da7 | 2222 | |
c4a03a56 TG |
2223 | if (link->flags & IFF_LOOPBACK) { |
2224 | if (network->link_local != ADDRESS_FAMILY_NO) | |
2225 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 2226 | |
c4a03a56 TG |
2227 | if (network->dhcp != ADDRESS_FAMILY_NO) |
2228 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 2229 | |
c4a03a56 TG |
2230 | if (network->dhcp_server) |
2231 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
2232 | } | |
bd2efe92 | 2233 | |
7d342c03 | 2234 | r = network_apply(network, link); |
c4a03a56 TG |
2235 | if (r < 0) |
2236 | return r; | |
2237 | } | |
505f8da7 | 2238 | |
0d4ad91d AR |
2239 | r = link_new_bound_to_list(link); |
2240 | if (r < 0) | |
2241 | return r; | |
2242 | ||
27dfc982 YW |
2243 | /* link_configure_duid() returns 0 if it requests product UUID. In that case, |
2244 | * link_configure() is called later asynchronously. */ | |
2245 | r = link_configure_duid(link); | |
2246 | if (r <= 0) | |
2247 | return r; | |
2248 | ||
a748b692 TG |
2249 | r = link_configure(link); |
2250 | if (r < 0) | |
2251 | return r; | |
2252 | ||
4232cf04 | 2253 | return 0; |
505f8da7 TG |
2254 | } |
2255 | ||
302a796f | 2256 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
572b21d9 | 2257 | _cleanup_strv_free_ char **s = NULL; |
4ff296b0 YW |
2258 | int r; |
2259 | ||
572b21d9 YW |
2260 | r = sd_netlink_message_get_errno(m); |
2261 | if (r < 0) { | |
40681e5c | 2262 | log_link_warning_errno(link, r, "Failed to wait for the interface to be initialized: %m"); |
572b21d9 YW |
2263 | link_enter_failed(link); |
2264 | return 0; | |
2265 | } | |
2266 | ||
2267 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); | |
2268 | if (r < 0 && r != -ENODATA) { | |
2269 | link_enter_failed(link); | |
2270 | return 0; | |
2271 | } | |
2272 | ||
2273 | strv_free_and_replace(link->alternative_names, s); | |
2274 | ||
4ff296b0 YW |
2275 | r = link_initialized_and_synced(link); |
2276 | if (r < 0) | |
2277 | link_enter_failed(link); | |
e6bf7774 YW |
2278 | return 1; |
2279 | } | |
2280 | ||
51517f9e | 2281 | int link_initialized(Link *link, sd_device *device) { |
4afd3348 | 2282 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f561e8e TG |
2283 | int r; |
2284 | ||
2285 | assert(link); | |
2286 | assert(link->manager); | |
2287 | assert(link->manager->rtnl); | |
2288 | assert(device); | |
2289 | ||
8434fd5c | 2290 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2291 | return 0; |
2292 | ||
51517f9e | 2293 | if (link->sd_device) |
679b3605 TG |
2294 | return 0; |
2295 | ||
79008bdd | 2296 | log_link_debug(link, "udev initialized link"); |
bd08ce56 | 2297 | link_set_state(link, LINK_STATE_INITIALIZED); |
4f561e8e | 2298 | |
51517f9e | 2299 | link->sd_device = sd_device_ref(device); |
4f561e8e | 2300 | |
3c9b8860 TG |
2301 | /* udev has initialized the link, but we don't know if we have yet |
2302 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2303 | * when it returns we know that the pending NEWLINKs have already been | |
2304 | * processed and that we are up-to-date */ | |
4f561e8e | 2305 | |
3c9b8860 TG |
2306 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2307 | link->ifindex); | |
4f561e8e TG |
2308 | if (r < 0) |
2309 | return r; | |
2310 | ||
302a796f YW |
2311 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_initialized_handler, |
2312 | link_netlink_destroy_callback, link); | |
4f561e8e TG |
2313 | if (r < 0) |
2314 | return r; | |
2315 | ||
5da8149f TG |
2316 | link_ref(link); |
2317 | ||
4f561e8e TG |
2318 | return 0; |
2319 | } | |
2320 | ||
c4a03a56 | 2321 | static int link_load(Link *link) { |
0bc70f1d TG |
2322 | _cleanup_free_ char *network_file = NULL, |
2323 | *addresses = NULL, | |
f703cc2c | 2324 | *routes = NULL, |
0bc70f1d TG |
2325 | *dhcp4_address = NULL, |
2326 | *ipv4ll_address = NULL; | |
c4a03a56 TG |
2327 | int r; |
2328 | ||
2329 | assert(link); | |
2330 | ||
aa8fbc74 | 2331 | r = parse_env_file(NULL, link->state_file, |
c4a03a56 TG |
2332 | "NETWORK_FILE", &network_file, |
2333 | "ADDRESSES", &addresses, | |
f703cc2c | 2334 | "ROUTES", &routes, |
0bc70f1d | 2335 | "DHCP4_ADDRESS", &dhcp4_address, |
13df9c39 | 2336 | "IPV4LL_ADDRESS", &ipv4ll_address); |
c4a03a56 TG |
2337 | if (r < 0 && r != -ENOENT) |
2338 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
2339 | ||
2340 | if (network_file) { | |
2341 | Network *network; | |
2342 | char *suffix; | |
2343 | ||
2344 | /* drop suffix */ | |
2345 | suffix = strrchr(network_file, '.'); | |
2346 | if (!suffix) { | |
2347 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
2348 | goto network_file_fail; | |
2349 | } | |
2350 | *suffix = '\0'; | |
2351 | ||
2352 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
2353 | if (r < 0) { | |
2354 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
2355 | goto network_file_fail; | |
2356 | } | |
2357 | ||
7d342c03 | 2358 | r = network_apply(network, link); |
c4a03a56 TG |
2359 | if (r < 0) |
2360 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
2361 | } | |
2362 | ||
2363 | network_file_fail: | |
2364 | ||
da4d3a61 YW |
2365 | r = link_deserialize_addresses(link, addresses); |
2366 | if (r < 0) | |
2367 | log_link_warning_errno(link, r, "Failed to load addresses from %s, ignoring: %m", link->state_file); | |
74544b4e | 2368 | |
731ff05b YW |
2369 | r = link_deserialize_routes(link, routes); |
2370 | if (r < 0) | |
2371 | log_link_warning_errno(link, r, "Failed to load routes from %s, ignoring: %m", link->state_file); | |
f703cc2c | 2372 | |
571eeba9 YW |
2373 | r = link_deserialize_dhcp4(link, dhcp4_address); |
2374 | if (r < 0) | |
2375 | log_link_warning_errno(link, r, "Failed to load DHCPv4 address from %s, ignoring: %m", link->state_file); | |
0bc70f1d | 2376 | |
daad60d1 YW |
2377 | r = link_deserialize_ipv4ll(link, ipv4ll_address); |
2378 | if (r < 0) | |
2379 | log_link_warning_errno(link, r, "Failed to load IPv4LL address from %s, ignoring: %m", link->state_file); | |
0bc70f1d | 2380 | |
c4a03a56 TG |
2381 | return 0; |
2382 | } | |
2383 | ||
1c4baffc | 2384 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
51517f9e | 2385 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
505f8da7 | 2386 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; |
51517f9e | 2387 | Link *link; |
5a937ea2 | 2388 | int r; |
505f8da7 TG |
2389 | |
2390 | assert(m); | |
fbbeb65a | 2391 | assert(m->rtnl); |
505f8da7 TG |
2392 | assert(message); |
2393 | assert(ret); | |
2394 | ||
2395 | r = link_new(m, message, ret); | |
2396 | if (r < 0) | |
2397 | return r; | |
2398 | ||
2399 | link = *ret; | |
2400 | ||
6a7a4e4d | 2401 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2402 | |
c4a03a56 TG |
2403 | r = link_load(link); |
2404 | if (r < 0) | |
2405 | return r; | |
2406 | ||
bf331d87 YW |
2407 | if (path_is_read_only_fs("/sys") <= 0) { |
2408 | /* udev should be around */ | |
ae06ab10 | 2409 | sprintf(ifindex_str, "n%d", link->ifindex); |
51517f9e YW |
2410 | r = sd_device_new_from_device_id(&device, ifindex_str); |
2411 | if (r < 0) { | |
4d59e14f YW |
2412 | log_link_warning_errno(link, r, "Could not find device, waiting for device initialization: %m"); |
2413 | return 0; | |
5c416fc4 | 2414 | } |
505f8da7 | 2415 | |
5a937ea2 | 2416 | r = sd_device_get_is_initialized(device); |
51517f9e | 2417 | if (r < 0) { |
bf331d87 | 2418 | log_link_warning_errno(link, r, "Could not determine whether the device is initialized: %m"); |
51517f9e YW |
2419 | goto failed; |
2420 | } | |
5a937ea2 | 2421 | if (r == 0) { |
505f8da7 | 2422 | /* not yet ready */ |
79008bdd | 2423 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2424 | return 0; |
3c4cb064 | 2425 | } |
505f8da7 | 2426 | |
299ad32d YW |
2427 | r = device_is_renaming(device); |
2428 | if (r < 0) { | |
bf331d87 | 2429 | log_link_warning_errno(link, r, "Failed to determine the device is being renamed: %m"); |
299ad32d YW |
2430 | goto failed; |
2431 | } | |
2432 | if (r > 0) { | |
bf331d87 | 2433 | log_link_debug(link, "Interface is being renamed, pending initialization."); |
299ad32d YW |
2434 | return 0; |
2435 | } | |
2436 | ||
4f561e8e TG |
2437 | r = link_initialized(link, device); |
2438 | if (r < 0) | |
5c416fc4 | 2439 | goto failed; |
4f561e8e | 2440 | } else { |
e6bf7774 | 2441 | r = link_initialized_and_synced(link); |
4f561e8e | 2442 | if (r < 0) |
5c416fc4 | 2443 | goto failed; |
4f561e8e | 2444 | } |
505f8da7 | 2445 | |
a748b692 | 2446 | return 0; |
5c416fc4 TG |
2447 | failed: |
2448 | link_enter_failed(link); | |
2449 | return r; | |
a748b692 TG |
2450 | } |
2451 | ||
c601ebf7 | 2452 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
e7ab854c TG |
2453 | int r; |
2454 | ||
2455 | assert(link); | |
2456 | ||
2457 | log_link_info(link, "Gained IPv6LL"); | |
2458 | ||
c601ebf7 | 2459 | link->ipv6ll_address = *address; |
e7ab854c TG |
2460 | link_check_ready(link); |
2461 | ||
b9ea3d2e | 2462 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
e7ab854c TG |
2463 | r = link_acquire_ipv6_conf(link); |
2464 | if (r < 0) { | |
2465 | link_enter_failed(link); | |
2466 | return r; | |
2467 | } | |
2468 | } | |
2469 | ||
2470 | return 0; | |
2471 | } | |
2472 | ||
9c0a72f9 TG |
2473 | static int link_carrier_gained(Link *link) { |
2474 | int r; | |
2475 | ||
2476 | assert(link); | |
2477 | ||
0894cfe4 | 2478 | r = wifi_get_info(link); |
8d968fdd YW |
2479 | if (r < 0) |
2480 | return r; | |
2481 | if (r > 0) { | |
572b21d9 YW |
2482 | r = link_reconfigure_internal(link, NULL, false); |
2483 | if (r < 0) { | |
2484 | link_enter_failed(link); | |
8d968fdd | 2485 | return r; |
572b21d9 | 2486 | } |
8d968fdd YW |
2487 | } |
2488 | ||
b9ea3d2e | 2489 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
9c0a72f9 TG |
2490 | r = link_acquire_conf(link); |
2491 | if (r < 0) { | |
2492 | link_enter_failed(link); | |
2493 | return r; | |
2494 | } | |
6fc25497 | 2495 | |
b425c3ae | 2496 | link_set_state(link, LINK_STATE_CONFIGURING); |
682c65b0 | 2497 | r = link_set_static_configs(link); |
6fc25497 SS |
2498 | if (r < 0) |
2499 | return r; | |
9c0a72f9 TG |
2500 | } |
2501 | ||
0d4ad91d AR |
2502 | r = link_handle_bound_by_list(link); |
2503 | if (r < 0) | |
2504 | return r; | |
2505 | ||
1f241589 YW |
2506 | if (!link->bridge_mdb_configured) { |
2507 | r = link_set_bridge_mdb(link); | |
2508 | if (r < 0) | |
2509 | return r; | |
2510 | } | |
2511 | ||
2512 | if (streq_ptr(link->kind, "bridge")) { | |
2513 | Link *slave; | |
2514 | ||
2515 | SET_FOREACH(slave, link->slaves) { | |
2516 | if (slave->bridge_mdb_configured) | |
2517 | continue; | |
2518 | ||
2519 | r = link_set_bridge_mdb(slave); | |
2520 | if (r < 0) | |
2521 | link_enter_failed(slave); | |
2522 | } | |
2523 | } | |
3db468ea | 2524 | |
9c0a72f9 TG |
2525 | return 0; |
2526 | } | |
2527 | ||
2528 | static int link_carrier_lost(Link *link) { | |
2529 | int r; | |
2530 | ||
2531 | assert(link); | |
2532 | ||
25e992ba | 2533 | if (link->network && link->network->ignore_carrier_loss) |
93b4dab5 SS |
2534 | return 0; |
2535 | ||
fbdb6605 | 2536 | /* Some devices reset itself while setting the MTU. This causes the DHCP client fall into a loop. |
55dc8c4a YW |
2537 | * setting_mtu keep track whether the device got reset because of setting MTU and does not drop the |
2538 | * configuration and stop the clients as well. */ | |
97e7fb39 SS |
2539 | if (link->setting_mtu) |
2540 | return 0; | |
2541 | ||
95355a28 | 2542 | r = link_stop_clients(link, false); |
9c0a72f9 TG |
2543 | if (r < 0) { |
2544 | link_enter_failed(link); | |
2545 | return r; | |
2546 | } | |
2547 | ||
5ae0fb7f | 2548 | if (link->dhcp_server) |
28464ae0 | 2549 | (void) sd_dhcp_server_stop(link->dhcp_server); |
45a9eac9 | 2550 | |
3104883d SS |
2551 | r = link_drop_config(link); |
2552 | if (r < 0) | |
2553 | return r; | |
2554 | ||
2c7b826d | 2555 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
f258e948 | 2556 | log_link_debug(link, "State is %s, dropping config", link_state_to_string(link->state)); |
c436d553 MM |
2557 | r = link_drop_foreign_config(link); |
2558 | if (r < 0) | |
2559 | return r; | |
2560 | } | |
3104883d | 2561 | |
0d4ad91d AR |
2562 | r = link_handle_bound_by_list(link); |
2563 | if (r < 0) | |
2564 | return r; | |
2565 | ||
9c0a72f9 TG |
2566 | return 0; |
2567 | } | |
2568 | ||
2569 | int link_carrier_reset(Link *link) { | |
2570 | int r; | |
2571 | ||
2572 | assert(link); | |
2573 | ||
2574 | if (link_has_carrier(link)) { | |
2575 | r = link_carrier_lost(link); | |
2576 | if (r < 0) | |
2577 | return r; | |
2578 | ||
2579 | r = link_carrier_gained(link); | |
2580 | if (r < 0) | |
2581 | return r; | |
2582 | ||
6a7a4e4d | 2583 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2584 | } |
2585 | ||
2586 | return 0; | |
2587 | } | |
2588 | ||
d236718c DS |
2589 | /* This is called every time an interface admin state changes to up; |
2590 | * specifically, when IFF_UP flag changes from unset to set */ | |
2591 | static int link_admin_state_up(Link *link) { | |
2592 | int r; | |
2593 | ||
2594 | /* We set the ipv6 mtu after the device mtu, but the kernel resets | |
2595 | * ipv6 mtu on NETDEV_UP, so we need to reset it. The check for | |
2596 | * ipv6_mtu_set prevents this from trying to set it too early before | |
2597 | * the link->network has been setup; we only need to reset it | |
2598 | * here if we've already set it during normal initialization. */ | |
2599 | if (link->ipv6_mtu_set) { | |
2600 | r = link_set_ipv6_mtu(link); | |
2601 | if (r < 0) | |
2602 | return r; | |
2603 | } | |
2604 | ||
2605 | return 0; | |
2606 | } | |
2607 | ||
1c4baffc | 2608 | int link_update(Link *link, sd_netlink_message *m) { |
572b21d9 | 2609 | _cleanup_strv_free_ char **s = NULL; |
c49b33ac | 2610 | struct ether_addr mac; |
ca4e095a | 2611 | const char *ifname; |
afe7fd56 | 2612 | uint32_t mtu; |
d236718c | 2613 | bool had_carrier, carrier_gained, carrier_lost, link_was_admin_up; |
bb262ef0 | 2614 | int old_master, r; |
22936833 | 2615 | |
dd3efc09 | 2616 | assert(link); |
b8941f74 | 2617 | assert(link->ifname); |
22936833 TG |
2618 | assert(m); |
2619 | ||
7619683b | 2620 | if (link->state == LINK_STATE_LINGER) { |
5238e957 | 2621 | log_link_info(link, "Link re-added"); |
289e6774 | 2622 | link_set_state(link, LINK_STATE_CONFIGURING); |
0d4ad91d AR |
2623 | |
2624 | r = link_new_carrier_maps(link); | |
2625 | if (r < 0) | |
2626 | return r; | |
7619683b TG |
2627 | } |
2628 | ||
1c4baffc | 2629 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2630 | if (r >= 0 && !streq(ifname, link->ifname)) { |
30de2b89 | 2631 | Manager *manager = link->manager; |
b8941f74 | 2632 | |
30de2b89 | 2633 | log_link_info(link, "Interface name change detected, %s has been renamed to %s.", link->ifname, ifname); |
0d4ad91d | 2634 | |
30de2b89 YW |
2635 | link_drop(link); |
2636 | r = link_add(manager, m, &link); | |
2637 | if (r < 0) | |
2638 | return r; | |
b8941f74 TG |
2639 | } |
2640 | ||
572b21d9 YW |
2641 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); |
2642 | if (r >= 0) | |
2643 | strv_free_and_replace(link->alternative_names, s); | |
2644 | ||
1c4baffc | 2645 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
2646 | if (r >= 0 && mtu > 0) { |
2647 | link->mtu = mtu; | |
4e964aa0 | 2648 | if (link->original_mtu == 0) { |
afe7fd56 | 2649 | link->original_mtu = mtu; |
6a7a4e4d | 2650 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
2651 | } |
2652 | ||
2653 | if (link->dhcp_client) { | |
3c9b8860 TG |
2654 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
2655 | link->mtu); | |
fc95c359 YW |
2656 | if (r < 0) |
2657 | return log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); | |
afe7fd56 | 2658 | } |
7465dd22 PF |
2659 | |
2660 | if (link->radv) { | |
2661 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
2662 | if (r < 0) | |
2663 | return log_link_warning_errno(link, r, "Could not set MTU for Router Advertisement: %m"); | |
2664 | } | |
9842de0d | 2665 | } |
69629de9 | 2666 | |
e9189a1f TG |
2667 | /* The kernel may broadcast NEWLINK messages without the MAC address |
2668 | set, simply ignore them. */ | |
1c4baffc | 2669 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
807667f7 YW |
2670 | if (r >= 0 && memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN) != 0) { |
2671 | ||
2672 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN); | |
2673 | ||
2674 | log_link_debug(link, "Gained new MAC address: " | |
2675 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", | |
2676 | mac.ether_addr_octet[0], | |
2677 | mac.ether_addr_octet[1], | |
2678 | mac.ether_addr_octet[2], | |
2679 | mac.ether_addr_octet[3], | |
2680 | mac.ether_addr_octet[4], | |
2681 | mac.ether_addr_octet[5]); | |
2682 | ||
a3adb4a6 YW |
2683 | r = ipv4ll_update_mac(link); |
2684 | if (r < 0) | |
2685 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
807667f7 | 2686 | |
d947f7f9 YW |
2687 | r = dhcp4_update_mac(link); |
2688 | if (r < 0) | |
2689 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
413708d1 | 2690 | |
eebba6dc YW |
2691 | r = dhcp6_update_mac(link); |
2692 | if (r < 0) | |
2693 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
7465dd22 | 2694 | |
be9363cc YW |
2695 | r = dhcp6_update_mac(link); |
2696 | if (r < 0) | |
2697 | return log_link_warning_errno(link, r, "Could not update MAC address for Router Advertisement: %m"); | |
807667f7 YW |
2698 | |
2699 | if (link->ndisc) { | |
2700 | r = sd_ndisc_set_mac(link->ndisc, &link->mac); | |
2701 | if (r < 0) | |
2702 | return log_link_warning_errno(link, r, "Could not update MAC for NDisc: %m"); | |
2703 | } | |
4f882b2a TG |
2704 | } |
2705 | ||
bb262ef0 YW |
2706 | old_master = link->master_ifindex; |
2707 | (void) sd_netlink_message_read_u32(m, IFLA_MASTER, (uint32_t *) &link->master_ifindex); | |
2708 | ||
d236718c | 2709 | link_was_admin_up = link->flags & IFF_UP; |
a61bb41c TG |
2710 | had_carrier = link_has_carrier(link); |
2711 | ||
bb262ef0 | 2712 | r = link_update_flags(link, m, old_master != link->master_ifindex); |
a61bb41c TG |
2713 | if (r < 0) |
2714 | return r; | |
2715 | ||
d236718c DS |
2716 | if (!link_was_admin_up && (link->flags & IFF_UP)) { |
2717 | log_link_info(link, "Link UP"); | |
2718 | ||
2719 | r = link_admin_state_up(link); | |
2720 | if (r < 0) | |
2721 | return r; | |
2722 | } else if (link_was_admin_up && !(link->flags & IFF_UP)) | |
2723 | log_link_info(link, "Link DOWN"); | |
2724 | ||
273eec24 LP |
2725 | r = link_update_lldp(link); |
2726 | if (r < 0) | |
2727 | return r; | |
2728 | ||
a61bb41c TG |
2729 | carrier_gained = !had_carrier && link_has_carrier(link); |
2730 | carrier_lost = had_carrier && !link_has_carrier(link); | |
2731 | ||
2732 | if (carrier_gained) { | |
6a7a4e4d | 2733 | log_link_info(link, "Gained carrier"); |
a61bb41c | 2734 | |
9c0a72f9 TG |
2735 | r = link_carrier_gained(link); |
2736 | if (r < 0) | |
2737 | return r; | |
a61bb41c | 2738 | } else if (carrier_lost) { |
6a7a4e4d | 2739 | log_link_info(link, "Lost carrier"); |
a61bb41c | 2740 | |
9c0a72f9 TG |
2741 | r = link_carrier_lost(link); |
2742 | if (r < 0) | |
a61bb41c | 2743 | return r; |
a61bb41c TG |
2744 | } |
2745 | ||
2746 | return 0; | |
dd3efc09 | 2747 | } |
fe8db0c5 | 2748 | |
b295beea LP |
2749 | static void print_link_hashmap(FILE *f, const char *prefix, Hashmap* h) { |
2750 | bool space = false; | |
b295beea LP |
2751 | Link *link; |
2752 | ||
2753 | assert(f); | |
2754 | assert(prefix); | |
2755 | ||
2756 | if (hashmap_isempty(h)) | |
2757 | return; | |
2758 | ||
0d536673 | 2759 | fputs(prefix, f); |
90e74a66 | 2760 | HASHMAP_FOREACH(link, h) { |
b295beea | 2761 | if (space) |
0d536673 | 2762 | fputc(' ', f); |
b295beea LP |
2763 | |
2764 | fprintf(f, "%i", link->ifindex); | |
2765 | space = true; | |
2766 | } | |
2767 | ||
0d536673 | 2768 | fputc('\n', f); |
b295beea LP |
2769 | } |
2770 | ||
64581765 | 2771 | static void link_save_dns(Link *link, FILE *f, struct in_addr_full **dns, unsigned n_dns, bool *space) { |
dddc8d1e | 2772 | for (unsigned j = 0; j < n_dns; j++) { |
e77bd3fd | 2773 | const char *str; |
15761549 | 2774 | |
64581765 YW |
2775 | if (dns[j]->ifindex != 0 && dns[j]->ifindex != link->ifindex) |
2776 | continue; | |
2777 | ||
e77bd3fd YW |
2778 | str = in_addr_full_to_string(dns[j]); |
2779 | if (!str) | |
15761549 | 2780 | continue; |
15761549 YW |
2781 | |
2782 | if (*space) | |
2783 | fputc(' ', f); | |
e77bd3fd | 2784 | fputs(str, f); |
15761549 YW |
2785 | *space = true; |
2786 | } | |
2787 | } | |
2788 | ||
d5e172d2 ZJS |
2789 | static void serialize_addresses( |
2790 | FILE *f, | |
2791 | const char *lvalue, | |
2792 | bool *space, | |
2793 | char **addresses, | |
2794 | sd_dhcp_lease *lease, | |
2795 | bool conditional, | |
ddb82ec2 | 2796 | sd_dhcp_lease_server_type what, |
d5e172d2 ZJS |
2797 | sd_dhcp6_lease *lease6, |
2798 | bool conditional6, | |
2799 | int (*lease6_get_addr)(sd_dhcp6_lease*, const struct in6_addr**), | |
2800 | int (*lease6_get_fqdn)(sd_dhcp6_lease*, char ***)) { | |
2801 | int r; | |
2802 | ||
2803 | bool _space = false; | |
2804 | if (!space) | |
2805 | space = &_space; | |
2806 | ||
2807 | if (lvalue) | |
2808 | fprintf(f, "%s=", lvalue); | |
2809 | fputstrv(f, addresses, NULL, space); | |
2810 | ||
2811 | if (lease && conditional) { | |
2812 | const struct in_addr *lease_addresses; | |
2813 | ||
2814 | r = sd_dhcp_lease_get_servers(lease, what, &lease_addresses); | |
2815 | if (r > 0) | |
d8bff5cc | 2816 | serialize_in_addrs(f, lease_addresses, r, space, in4_addr_is_non_local); |
d5e172d2 ZJS |
2817 | } |
2818 | ||
2819 | if (lease6 && conditional6 && lease6_get_addr) { | |
2820 | const struct in6_addr *in6_addrs; | |
2821 | ||
2822 | r = lease6_get_addr(lease6, &in6_addrs); | |
d8bff5cc ZJS |
2823 | if (r > 0) |
2824 | serialize_in6_addrs(f, in6_addrs, r, space); | |
d5e172d2 ZJS |
2825 | } |
2826 | ||
2827 | if (lease6 && conditional6 && lease6_get_fqdn) { | |
2828 | char **in6_hosts; | |
2829 | ||
2830 | r = lease6_get_fqdn(lease6, &in6_hosts); | |
2831 | if (r > 0) | |
2832 | fputstrv(f, in6_hosts, NULL, space); | |
2833 | } | |
2834 | ||
2835 | if (lvalue) | |
2836 | fputc('\n', f); | |
2837 | } | |
2838 | ||
fe8db0c5 | 2839 | int link_save(Link *link) { |
d361b373 | 2840 | const char *admin_state, *oper_state, *carrier_state, *address_state; |
68a8723c | 2841 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 TG |
2842 | _cleanup_fclose_ FILE *f = NULL; |
2843 | int r; | |
2844 | ||
2845 | assert(link); | |
2846 | assert(link->state_file); | |
68a8723c | 2847 | assert(link->lease_file); |
bbf7c048 TG |
2848 | assert(link->manager); |
2849 | ||
370e9930 | 2850 | if (link->state == LINK_STATE_LINGER) { |
6990fb6b | 2851 | (void) unlink(link->state_file); |
370e9930 TG |
2852 | return 0; |
2853 | } | |
2854 | ||
34437b4f LP |
2855 | link_lldp_save(link); |
2856 | ||
deb2e523 TG |
2857 | admin_state = link_state_to_string(link->state); |
2858 | assert(admin_state); | |
2859 | ||
e375dcde TG |
2860 | oper_state = link_operstate_to_string(link->operstate); |
2861 | assert(oper_state); | |
deb2e523 | 2862 | |
ac999bf0 YW |
2863 | carrier_state = link_carrier_state_to_string(link->carrier_state); |
2864 | assert(carrier_state); | |
2865 | ||
2866 | address_state = link_address_state_to_string(link->address_state); | |
2867 | assert(address_state); | |
2868 | ||
fe8db0c5 TG |
2869 | r = fopen_temporary(link->state_file, &f, &temp_path); |
2870 | if (r < 0) | |
6a7a4e4d | 2871 | goto fail; |
fe8db0c5 | 2872 | |
5512a963 | 2873 | (void) fchmod(fileno(f), 0644); |
fe8db0c5 TG |
2874 | |
2875 | fprintf(f, | |
2876 | "# This is private data. Do not parse.\n" | |
deb2e523 | 2877 | "ADMIN_STATE=%s\n" |
ac999bf0 YW |
2878 | "OPER_STATE=%s\n" |
2879 | "CARRIER_STATE=%s\n" | |
2880 | "ADDRESS_STATE=%s\n", | |
2881 | admin_state, oper_state, carrier_state, address_state); | |
fe8db0c5 | 2882 | |
bcb7a07e | 2883 | if (link->network) { |
fe0e16db YW |
2884 | char **dhcp6_domains = NULL, **dhcp_domains = NULL; |
2885 | const char *dhcp_domainname = NULL, *p; | |
fe0e16db | 2886 | bool space; |
07bdc70d | 2887 | |
c1a38904 MTL |
2888 | fprintf(f, "REQUIRED_FOR_ONLINE=%s\n", |
2889 | yes_no(link->network->required_for_online)); | |
2890 | ||
d5e172d2 ZJS |
2891 | LinkOperationalStateRange st = link->network->required_operstate_for_online; |
2892 | fprintf(f, "REQUIRED_OPER_STATE_FOR_ONLINE=%s%s%s\n", | |
2893 | strempty(link_operstate_to_string(st.min)), | |
2894 | st.max != LINK_OPERSTATE_RANGE_DEFAULT.max ? ":" : "", | |
2895 | st.max != LINK_OPERSTATE_RANGE_DEFAULT.max ? strempty(link_operstate_to_string(st.max)) : ""); | |
4ac77d63 | 2896 | |
adc5b2e2 TG |
2897 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
2898 | ||
d5e172d2 ZJS |
2899 | /************************************************************/ |
2900 | ||
0d536673 | 2901 | fputs("DNS=", f); |
ea352b40 | 2902 | space = false; |
15761549 | 2903 | if (link->n_dns != (unsigned) -1) |
64581765 | 2904 | link_save_dns(link, f, link->dns, link->n_dns, &space); |
15761549 | 2905 | else |
64581765 | 2906 | link_save_dns(link, f, link->network->dns, link->network->n_dns, &space); |
d5314fff | 2907 | |
d5e172d2 ZJS |
2908 | serialize_addresses(f, NULL, &space, |
2909 | NULL, | |
2910 | link->dhcp_lease, | |
2911 | link->network->dhcp_use_dns, | |
ddb82ec2 | 2912 | SD_DHCP_LEASE_DNS, |
1633c457 | 2913 | link->dhcp6_lease, |
d5e172d2 ZJS |
2914 | link->network->dhcp6_use_dns, |
2915 | sd_dhcp6_lease_get_dns, | |
2916 | NULL); | |
1e7a0e21 | 2917 | |
a8c10331 | 2918 | /* Make sure to flush out old entries before we use the NDisc data */ |
1e7a0e21 LP |
2919 | ndisc_vacuum(link); |
2920 | ||
b296797f | 2921 | if (link->network->ipv6_accept_ra_use_dns && link->ndisc_rdnss) { |
1e7a0e21 LP |
2922 | NDiscRDNSS *dd; |
2923 | ||
90e74a66 | 2924 | SET_FOREACH(dd, link->ndisc_rdnss) |
d8bff5cc | 2925 | serialize_in6_addrs(f, &dd->address, 1, &space); |
299d578f SS |
2926 | } |
2927 | ||
2928 | fputc('\n', f); | |
2929 | ||
d5e172d2 ZJS |
2930 | /************************************************************/ |
2931 | ||
2932 | serialize_addresses(f, "NTP", NULL, | |
2933 | link->ntp ?: link->network->ntp, | |
2934 | link->dhcp_lease, | |
2935 | link->network->dhcp_use_ntp, | |
ddb82ec2 | 2936 | SD_DHCP_LEASE_NTP, |
1633c457 | 2937 | link->dhcp6_lease, |
d5e172d2 ZJS |
2938 | link->network->dhcp6_use_ntp, |
2939 | sd_dhcp6_lease_get_ntp_addrs, | |
2940 | sd_dhcp6_lease_get_ntp_fqdn); | |
2941 | ||
2942 | serialize_addresses(f, "SIP", NULL, | |
2a71d57f | 2943 | NULL, |
d5e172d2 ZJS |
2944 | link->dhcp_lease, |
2945 | link->network->dhcp_use_sip, | |
ddb82ec2 | 2946 | SD_DHCP_LEASE_SIP, |
2a71d57f | 2947 | NULL, false, NULL, NULL); |
d5e172d2 ZJS |
2948 | |
2949 | /************************************************************/ | |
bd8f6538 | 2950 | |
b2a81c0b | 2951 | if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
b85bc551 | 2952 | if (link->dhcp_lease) { |
b2a81c0b | 2953 | (void) sd_dhcp_lease_get_domainname(link->dhcp_lease, &dhcp_domainname); |
b85bc551 DW |
2954 | (void) sd_dhcp_lease_get_search_domains(link->dhcp_lease, &dhcp_domains); |
2955 | } | |
1633c457 YW |
2956 | if (link->dhcp6_lease) |
2957 | (void) sd_dhcp6_lease_get_domains(link->dhcp6_lease, &dhcp6_domains); | |
07bdc70d PF |
2958 | } |
2959 | ||
fe0e16db YW |
2960 | fputs("DOMAINS=", f); |
2961 | space = false; | |
90e74a66 | 2962 | ORDERED_SET_FOREACH(p, link->search_domains ?: link->network->search_domains) |
fe0e16db | 2963 | fputs_with_space(f, p, NULL, &space); |
07bdc70d | 2964 | |
1e7a0e21 | 2965 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) { |
1e7a0e21 LP |
2966 | if (dhcp_domainname) |
2967 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
2968 | if (dhcp_domains) |
2969 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
2970 | if (dhcp6_domains) |
2971 | fputstrv(f, dhcp6_domains, NULL, &space); | |
a0cd6da5 YW |
2972 | } |
2973 | ||
2974 | if (link->network->ipv6_accept_ra_use_domains == DHCP_USE_DOMAINS_YES) { | |
2975 | NDiscDNSSL *dd; | |
1e7a0e21 | 2976 | |
90e74a66 | 2977 | SET_FOREACH(dd, link->ndisc_dnssl) |
1e7a0e21 LP |
2978 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); |
2979 | } | |
b2a81c0b | 2980 | |
0d536673 | 2981 | fputc('\n', f); |
6192b846 | 2982 | |
d5e172d2 ZJS |
2983 | /************************************************************/ |
2984 | ||
fe0e16db YW |
2985 | fputs("ROUTE_DOMAINS=", f); |
2986 | space = false; | |
90e74a66 | 2987 | ORDERED_SET_FOREACH(p, link->route_domains ?: link->network->route_domains) |
fe0e16db | 2988 | fputs_with_space(f, p, NULL, &space); |
b2a81c0b | 2989 | |
1e7a0e21 | 2990 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE) { |
1e7a0e21 LP |
2991 | if (dhcp_domainname) |
2992 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
2993 | if (dhcp_domains) |
2994 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
2995 | if (dhcp6_domains) |
2996 | fputstrv(f, dhcp6_domains, NULL, &space); | |
a0cd6da5 YW |
2997 | } |
2998 | ||
2999 | if (link->network->ipv6_accept_ra_use_domains == DHCP_USE_DOMAINS_ROUTE) { | |
3000 | NDiscDNSSL *dd; | |
1e7a0e21 | 3001 | |
90e74a66 | 3002 | SET_FOREACH(dd, link->ndisc_dnssl) |
1e7a0e21 LP |
3003 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); |
3004 | } | |
b2a81c0b | 3005 | |
0d536673 | 3006 | fputc('\n', f); |
67272d15 | 3007 | |
d5e172d2 ZJS |
3008 | /************************************************************/ |
3009 | ||
3c9b8860 | 3010 | fprintf(f, "LLMNR=%s\n", |
15761549 | 3011 | resolve_support_to_string(link->llmnr >= 0 ? link->llmnr : link->network->llmnr)); |
d5e172d2 ZJS |
3012 | |
3013 | /************************************************************/ | |
3014 | ||
aaa297d4 | 3015 | fprintf(f, "MDNS=%s\n", |
15761549 | 3016 | resolve_support_to_string(link->mdns >= 0 ? link->mdns : link->network->mdns)); |
15761549 | 3017 | |
d5e172d2 ZJS |
3018 | /************************************************************/ |
3019 | ||
3020 | int dns_default_route = | |
3021 | link->dns_default_route >= 0 ? link->dns_default_route : | |
3022 | link->network->dns_default_route; | |
3023 | if (dns_default_route >= 0) | |
3024 | fprintf(f, "DNS_DEFAULT_ROUTE=%s\n", yes_no(dns_default_route)); | |
3025 | ||
3026 | /************************************************************/ | |
3027 | ||
3028 | DnsOverTlsMode dns_over_tls_mode = | |
3029 | link->dns_over_tls_mode != _DNS_OVER_TLS_MODE_INVALID ? link->dns_over_tls_mode : | |
3030 | link->network->dns_over_tls_mode; | |
3031 | if (dns_over_tls_mode != _DNS_OVER_TLS_MODE_INVALID) | |
3032 | fprintf(f, "DNS_OVER_TLS=%s\n", dns_over_tls_mode_to_string(dns_over_tls_mode)); | |
3033 | ||
3034 | /************************************************************/ | |
3035 | ||
3036 | DnssecMode dnssec_mode = | |
3037 | link->dnssec_mode != _DNSSEC_MODE_INVALID ? link->dnssec_mode : | |
3038 | link->network->dnssec_mode; | |
3039 | if (dnssec_mode != _DNSSEC_MODE_INVALID) | |
3040 | fprintf(f, "DNSSEC=%s\n", dnssec_mode_to_string(dnssec_mode)); | |
3041 | ||
3042 | /************************************************************/ | |
3043 | ||
3044 | Set *nta_anchors = link->dnssec_negative_trust_anchors; | |
3045 | if (set_isempty(nta_anchors)) | |
3046 | nta_anchors = link->network->dnssec_negative_trust_anchors; | |
3047 | ||
3048 | if (!set_isempty(nta_anchors)) { | |
8a516214 LP |
3049 | const char *n; |
3050 | ||
0d536673 | 3051 | fputs("DNSSEC_NTA=", f); |
8a516214 | 3052 | space = false; |
90e74a66 | 3053 | SET_FOREACH(n, nta_anchors) |
d390f8ef | 3054 | fputs_with_space(f, n, NULL, &space); |
0d536673 | 3055 | fputc('\n', f); |
8a516214 LP |
3056 | } |
3057 | ||
d5e172d2 ZJS |
3058 | /************************************************************/ |
3059 | ||
3b31e2b7 YW |
3060 | r = link_serialize_addresses(link, f); |
3061 | if (r < 0) | |
3062 | goto fail; | |
c1eb9872 | 3063 | |
d5e172d2 ZJS |
3064 | /************************************************************/ |
3065 | ||
56519412 YW |
3066 | r = link_serialize_routes(link, f); |
3067 | if (r < 0) | |
3068 | goto fail; | |
bcb7a07e | 3069 | } |
7374f9d8 | 3070 | |
b295beea LP |
3071 | print_link_hashmap(f, "CARRIER_BOUND_TO=", link->bound_to_links); |
3072 | print_link_hashmap(f, "CARRIER_BOUND_BY=", link->bound_by_links); | |
0d4ad91d | 3073 | |
8eb9058d | 3074 | if (link->dhcp_lease) { |
bd91b83e | 3075 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 3076 | if (r < 0) |
c2d6bd61 | 3077 | goto fail; |
fe8db0c5 | 3078 | |
7374f9d8 | 3079 | fprintf(f, |
b0e39c82 TG |
3080 | "DHCP_LEASE=%s\n", |
3081 | link->lease_file); | |
deb2e523 | 3082 | } else |
6990fb6b | 3083 | (void) unlink(link->lease_file); |
fe8db0c5 | 3084 | |
ca21a19a YW |
3085 | r = link_serialize_ipv4ll(link, f); |
3086 | if (r < 0) | |
3087 | goto fail; | |
0bc70f1d | 3088 | |
5460bde5 YW |
3089 | r = link_serialize_dhcp6_client(link, f); |
3090 | if (r < 0) | |
3091 | goto fail; | |
18d8a2cf | 3092 | |
c2d6bd61 LP |
3093 | r = fflush_and_check(f); |
3094 | if (r < 0) | |
3095 | goto fail; | |
fe8db0c5 | 3096 | |
c2d6bd61 | 3097 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 3098 | r = -errno; |
c2d6bd61 | 3099 | goto fail; |
fe8db0c5 TG |
3100 | } |
3101 | ||
c2d6bd61 | 3102 | return 0; |
dacd6cee | 3103 | |
c2d6bd61 | 3104 | fail: |
6a7a4e4d | 3105 | (void) unlink(link->state_file); |
6a7a4e4d LP |
3106 | if (temp_path) |
3107 | (void) unlink(temp_path); | |
3108 | ||
dacd6cee | 3109 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
3110 | } |
3111 | ||
84de38c5 TG |
3112 | /* The serialized state in /run is no longer up-to-date. */ |
3113 | void link_dirty(Link *link) { | |
3114 | int r; | |
3115 | ||
3116 | assert(link); | |
3117 | ||
0c241a37 SS |
3118 | /* mark manager dirty as link is dirty */ |
3119 | manager_dirty(link->manager); | |
3120 | ||
de7fef4b | 3121 | r = set_ensure_put(&link->manager->dirty_links, NULL, link); |
0c241a37 | 3122 | if (r <= 0) |
de7fef4b | 3123 | /* Ignore allocation errors and don't take another ref if the link was already dirty */ |
84de38c5 | 3124 | return; |
84de38c5 TG |
3125 | link_ref(link); |
3126 | } | |
3127 | ||
3128 | /* The serialized state in /run is up-to-date */ | |
3129 | void link_clean(Link *link) { | |
3130 | assert(link); | |
3131 | assert(link->manager); | |
3132 | ||
1046bf9b | 3133 | link_unref(set_remove(link->manager->dirty_links, link)); |
84de38c5 TG |
3134 | } |
3135 | ||
c2a65950 YW |
3136 | int link_save_and_clean(Link *link) { |
3137 | int r; | |
3138 | ||
3139 | r = link_save(link); | |
3140 | if (r < 0) | |
3141 | return r; | |
3142 | ||
3143 | link_clean(link); | |
3144 | return 0; | |
3145 | } | |
3146 | ||
fe8db0c5 | 3147 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 3148 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 3149 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 3150 | [LINK_STATE_CONFIGURING] = "configuring", |
fe8db0c5 | 3151 | [LINK_STATE_CONFIGURED] = "configured", |
57bd6899 | 3152 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 3153 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 3154 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
3155 | }; |
3156 | ||
3157 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
5ecb131d YW |
3158 | |
3159 | int log_link_message_full_errno(Link *link, sd_netlink_message *m, int level, int err, const char *msg) { | |
3160 | const char *err_msg = NULL; | |
3161 | ||
3162 | (void) sd_netlink_message_read_string(m, NLMSGERR_ATTR_MSG, &err_msg); | |
d157714b YW |
3163 | return log_link_full_errno(link, level, err, |
3164 | "%s: %s%s%s%m", | |
3165 | msg, | |
3166 | strempty(err_msg), | |
3167 | err_msg && !endswith(err_msg, ".") ? "." : "", | |
3168 | err_msg ? " " : ""); | |
5ecb131d | 3169 | } |