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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" |
7465dd22 | 41 | #include "networkd-radv.h" |
bce67bbe | 42 | #include "networkd-routing-policy-rule.h" |
8d968fdd | 43 | #include "networkd-wifi.h" |
cf1d700d TG |
44 | #include "set.h" |
45 | #include "socket-util.h" | |
bf331d87 | 46 | #include "stat-util.h" |
15a5e950 | 47 | #include "stdio-util.h" |
8b43440b | 48 | #include "string-table.h" |
51517f9e | 49 | #include "strv.h" |
62e021a9 | 50 | #include "sysctl-util.h" |
34658df2 | 51 | #include "tc.h" |
e4de7287 | 52 | #include "tmpfile-util.h" |
299ad32d | 53 | #include "udev-util.h" |
cf1d700d | 54 | #include "util.h" |
737f1405 | 55 | #include "vrf.h" |
fc2f9534 | 56 | |
2d792895 | 57 | bool link_ipv4ll_enabled(Link *link, AddressFamily mask) { |
b9d74c40 | 58 | assert(link); |
910feb78 | 59 | assert((mask & ~(ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_FALLBACK_IPV4)) == 0); |
b9d74c40 | 60 | |
78c958f8 TG |
61 | if (link->flags & IFF_LOOPBACK) |
62 | return false; | |
63 | ||
64 | if (!link->network) | |
65 | return false; | |
66 | ||
500b96eb | 67 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
68 | return false; |
69 | ||
98d20a17 | 70 | if (STRPTR_IN_SET(link->kind, |
71 | "vrf", "wireguard", "ipip", "gre", "ip6gre","ip6tnl", "sit", "vti", | |
b0486c73 | 72 | "vti6", "nlmon", "xfrm", "bareudp")) |
a8f5bba6 JD |
73 | return false; |
74 | ||
f410d463 YW |
75 | /* L3 or L3S mode do not support ARP. */ |
76 | if (IN_SET(link_get_ipvlan_mode(link), NETDEV_IPVLAN_MODE_L3, NETDEV_IPVLAN_MODE_L3S)) | |
77 | return false; | |
78 | ||
f2bfcdb9 YW |
79 | if (link->network->bond) |
80 | return false; | |
81 | ||
910feb78 | 82 | return link->network->link_local & mask; |
8bc17bb3 SS |
83 | } |
84 | ||
f8f2f880 | 85 | bool link_ipv6ll_enabled(Link *link) { |
b9d74c40 LP |
86 | assert(link); |
87 | ||
fa709992 LP |
88 | if (!socket_ipv6_is_supported()) |
89 | return false; | |
90 | ||
d0d6a4cd TG |
91 | if (link->flags & IFF_LOOPBACK) |
92 | return false; | |
93 | ||
94 | if (!link->network) | |
95 | return false; | |
96 | ||
500b96eb | 97 | if (link->iftype == ARPHRD_CAN) |
c6ac3729 YW |
98 | return false; |
99 | ||
100 | if (STRPTR_IN_SET(link->kind, "vrf", "wireguard", "ipip", "gre", "sit", "vti", "nlmon")) | |
a8f5bba6 JD |
101 | return false; |
102 | ||
f2bfcdb9 YW |
103 | if (link->network->bond) |
104 | return false; | |
105 | ||
e0ee46f2 | 106 | return link->network->link_local & ADDRESS_FAMILY_IPV6; |
78c958f8 TG |
107 | } |
108 | ||
439689c6 SS |
109 | static bool link_ipv6_enabled(Link *link) { |
110 | assert(link); | |
111 | ||
112 | if (!socket_ipv6_is_supported()) | |
113 | return false; | |
114 | ||
b102cdca | 115 | if (link->network->bond) |
2b00a4e0 TY |
116 | return false; |
117 | ||
500b96eb | 118 | if (link->iftype == ARPHRD_CAN) |
af9ba57a YW |
119 | return false; |
120 | ||
4cef7fe3 | 121 | /* DHCPv6 client will not be started if no IPv6 link-local address is configured. */ |
adfeee49 YW |
122 | if (link_ipv6ll_enabled(link)) |
123 | return true; | |
124 | ||
125 | if (network_has_static_ipv6_configurations(link->network)) | |
126 | return true; | |
127 | ||
128 | return false; | |
439689c6 SS |
129 | } |
130 | ||
6f7a17ff | 131 | bool link_ip_forward_enabled(Link *link, int family) { |
b9d74c40 | 132 | assert(link); |
6f7a17ff | 133 | assert(IN_SET(family, AF_INET, AF_INET6)); |
b9d74c40 | 134 | |
6f7a17ff | 135 | if (family == AF_INET6 && !socket_ipv6_is_supported()) |
765afd5c LP |
136 | return false; |
137 | ||
769d324c LP |
138 | if (link->flags & IFF_LOOPBACK) |
139 | return false; | |
140 | ||
141 | if (!link->network) | |
142 | return false; | |
143 | ||
6f7a17ff | 144 | return link->network->ip_forward & (family == AF_INET ? ADDRESS_FAMILY_IPV4 : ADDRESS_FAMILY_IPV6); |
5a8bcb67 LP |
145 | } |
146 | ||
23d8b221 SS |
147 | static bool link_proxy_arp_enabled(Link *link) { |
148 | assert(link); | |
149 | ||
150 | if (link->flags & IFF_LOOPBACK) | |
151 | return false; | |
152 | ||
153 | if (!link->network) | |
154 | return false; | |
155 | ||
156 | if (link->network->proxy_arp < 0) | |
157 | return false; | |
158 | ||
159 | return true; | |
160 | } | |
161 | ||
1f0d9695 | 162 | static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { |
fa709992 | 163 | assert(link); |
d68e2e59 LP |
164 | |
165 | if (!socket_ipv6_is_supported()) | |
166 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; | |
167 | ||
49092e22 | 168 | if (link->flags & IFF_LOOPBACK) |
1f0d9695 | 169 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
170 | |
171 | if (!link->network) | |
1f0d9695 | 172 | return _IPV6_PRIVACY_EXTENSIONS_INVALID; |
49092e22 SS |
173 | |
174 | return link->network->ipv6_privacy_extensions; | |
175 | } | |
176 | ||
57ad7607 | 177 | static int link_update_ipv6_sysctl(Link *link) { |
482efedc | 178 | bool enabled; |
439689c6 SS |
179 | int r; |
180 | ||
181 | if (link->flags & IFF_LOOPBACK) | |
182 | return 0; | |
183 | ||
482efedc SS |
184 | enabled = link_ipv6_enabled(link); |
185 | if (enabled) { | |
186 | r = sysctl_write_ip_property_boolean(AF_INET6, link->ifname, "disable_ipv6", false); | |
187 | if (r < 0) | |
57ad7607 ZJS |
188 | return log_link_warning_errno(link, r, "Cannot enable IPv6: %m"); |
189 | ||
190 | log_link_info(link, "IPv6 successfully enabled"); | |
482efedc | 191 | } |
439689c6 SS |
192 | |
193 | return 0; | |
194 | } | |
195 | ||
34bf3c00 YW |
196 | static bool link_is_enslaved(Link *link) { |
197 | if (link->flags & IFF_SLAVE) | |
198 | /* Even if the link is not managed by networkd, honor IFF_SLAVE flag. */ | |
199 | return true; | |
200 | ||
34bf3c00 YW |
201 | if (!link->network) |
202 | return false; | |
203 | ||
bb262ef0 | 204 | if (link->master_ifindex > 0 && link->network->bridge) |
34bf3c00 YW |
205 | return true; |
206 | ||
bb262ef0 YW |
207 | /* TODO: add conditions for other netdevs. */ |
208 | ||
34bf3c00 YW |
209 | return false; |
210 | } | |
211 | ||
45e11abf YW |
212 | static void link_update_master_operstate(Link *link, NetDev *netdev) { |
213 | Link *master; | |
214 | ||
215 | if (!netdev) | |
216 | return; | |
217 | ||
7936917e YW |
218 | if (netdev->ifindex <= 0) |
219 | return; | |
220 | ||
45e11abf YW |
221 | if (link_get(link->manager, netdev->ifindex, &master) < 0) |
222 | return; | |
223 | ||
224 | link_update_operstate(master, true); | |
225 | } | |
226 | ||
227 | void link_update_operstate(Link *link, bool also_update_master) { | |
84de38c5 | 228 | LinkOperationalState operstate; |
1678fbb3 YW |
229 | LinkCarrierState carrier_state; |
230 | LinkAddressState address_state; | |
35c5a9ca | 231 | _cleanup_strv_free_ char **p = NULL; |
1678fbb3 | 232 | uint8_t scope = RT_SCOPE_NOWHERE; |
35c5a9ca | 233 | bool changed = false; |
1678fbb3 | 234 | Address *address; |
14153d1b | 235 | |
84de38c5 TG |
236 | assert(link); |
237 | ||
238 | if (link->kernel_operstate == IF_OPER_DORMANT) | |
1678fbb3 | 239 | carrier_state = LINK_CARRIER_STATE_DORMANT; |
84de38c5 | 240 | else if (link_has_carrier(link)) { |
1678fbb3 YW |
241 | if (link_is_enslaved(link)) |
242 | carrier_state = LINK_CARRIER_STATE_ENSLAVED; | |
84de38c5 | 243 | else |
1678fbb3 | 244 | carrier_state = LINK_CARRIER_STATE_CARRIER; |
84de38c5 | 245 | } else if (link->flags & IFF_UP) |
1678fbb3 | 246 | carrier_state = LINK_CARRIER_STATE_NO_CARRIER; |
84de38c5 | 247 | else |
1678fbb3 | 248 | carrier_state = LINK_CARRIER_STATE_OFF; |
84de38c5 | 249 | |
1678fbb3 | 250 | if (carrier_state >= LINK_CARRIER_STATE_CARRIER) { |
959f65d3 YW |
251 | Link *slave; |
252 | ||
90e74a66 | 253 | SET_FOREACH(slave, link->slaves) { |
959f65d3 | 254 | link_update_operstate(slave, false); |
84de38c5 | 255 | |
1678fbb3 YW |
256 | if (slave->carrier_state < LINK_CARRIER_STATE_CARRIER) |
257 | carrier_state = LINK_CARRIER_STATE_DEGRADED_CARRIER; | |
84de38c5 | 258 | } |
959f65d3 | 259 | } |
84de38c5 | 260 | |
90e74a66 | 261 | SET_FOREACH(address, link->addresses) { |
1678fbb3 YW |
262 | if (!address_is_ready(address)) |
263 | continue; | |
84de38c5 | 264 | |
1678fbb3 YW |
265 | if (address->scope < scope) |
266 | scope = address->scope; | |
267 | } | |
84de38c5 | 268 | |
1678fbb3 | 269 | /* for operstate we also take foreign addresses into account */ |
90e74a66 | 270 | SET_FOREACH(address, link->addresses_foreign) { |
1678fbb3 YW |
271 | if (!address_is_ready(address)) |
272 | continue; | |
273 | ||
274 | if (address->scope < scope) | |
275 | scope = address->scope; | |
276 | } | |
277 | ||
278 | if (scope < RT_SCOPE_SITE) | |
279 | /* universally accessible addresses found */ | |
280 | address_state = LINK_ADDRESS_STATE_ROUTABLE; | |
281 | else if (scope < RT_SCOPE_HOST) | |
282 | /* only link or site local addresses found */ | |
283 | address_state = LINK_ADDRESS_STATE_DEGRADED; | |
84de38c5 | 284 | else |
1678fbb3 YW |
285 | /* no useful addresses found */ |
286 | address_state = LINK_ADDRESS_STATE_OFF; | |
287 | ||
288 | /* Mapping of address and carrier state vs operational state | |
289 | * carrier state | |
290 | * | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
291 | * ------------------------------------------------------------------------------ | |
292 | * off | off | no-carrier | dormant | degraded-carrier | carrier | enslaved | |
293 | * address_state degraded | off | no-carrier | dormant | degraded-carrier | degraded | enslaved | |
294 | * routable | off | no-carrier | dormant | degraded-carrier | routable | routable | |
295 | */ | |
84de38c5 | 296 | |
1678fbb3 YW |
297 | if (carrier_state < LINK_CARRIER_STATE_CARRIER || address_state == LINK_ADDRESS_STATE_OFF) |
298 | operstate = (LinkOperationalState) carrier_state; | |
299 | else if (address_state == LINK_ADDRESS_STATE_ROUTABLE) | |
300 | operstate = LINK_OPERSTATE_ROUTABLE; | |
301 | else if (carrier_state == LINK_CARRIER_STATE_CARRIER) | |
302 | operstate = LINK_OPERSTATE_DEGRADED; | |
303 | else | |
14153d1b YW |
304 | operstate = LINK_OPERSTATE_ENSLAVED; |
305 | ||
35c5a9ca YW |
306 | if (link->carrier_state != carrier_state) { |
307 | link->carrier_state = carrier_state; | |
308 | changed = true; | |
309 | if (strv_extend(&p, "CarrierState") < 0) | |
310 | log_oom(); | |
311 | } | |
959f65d3 | 312 | |
35c5a9ca YW |
313 | if (link->address_state != address_state) { |
314 | link->address_state = address_state; | |
315 | changed = true; | |
316 | if (strv_extend(&p, "AddressState") < 0) | |
317 | log_oom(); | |
959f65d3 YW |
318 | } |
319 | ||
84de38c5 TG |
320 | if (link->operstate != operstate) { |
321 | link->operstate = operstate; | |
35c5a9ca YW |
322 | changed = true; |
323 | if (strv_extend(&p, "OperationalState") < 0) | |
324 | log_oom(); | |
84de38c5 | 325 | } |
959f65d3 | 326 | |
35c5a9ca YW |
327 | if (p) |
328 | link_send_changed_strv(link, p); | |
329 | if (changed) | |
330 | link_dirty(link); | |
331 | ||
45e11abf YW |
332 | if (also_update_master && link->network) { |
333 | link_update_master_operstate(link, link->network->bond); | |
334 | link_update_master_operstate(link, link->network->bridge); | |
959f65d3 | 335 | } |
84de38c5 TG |
336 | } |
337 | ||
51d18171 TG |
338 | #define FLAG_STRING(string, flag, old, new) \ |
339 | (((old ^ new) & flag) \ | |
340 | ? ((old & flag) ? (" -" string) : (" +" string)) \ | |
341 | : "") | |
342 | ||
bb262ef0 | 343 | static int link_update_flags(Link *link, sd_netlink_message *m, bool force_update_operstate) { |
51d18171 TG |
344 | unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags; |
345 | uint8_t operstate; | |
346 | int r; | |
347 | ||
348 | assert(link); | |
349 | ||
350 | r = sd_rtnl_message_link_get_flags(m, &flags); | |
6a7a4e4d LP |
351 | if (r < 0) |
352 | return log_link_warning_errno(link, r, "Could not get link flags: %m"); | |
51d18171 | 353 | |
1c4baffc | 354 | r = sd_netlink_message_read_u8(m, IFLA_OPERSTATE, &operstate); |
51d18171 TG |
355 | if (r < 0) |
356 | /* if we got a message without operstate, take it to mean | |
357 | the state was unchanged */ | |
358 | operstate = link->kernel_operstate; | |
359 | ||
bb262ef0 | 360 | if (!force_update_operstate && (link->flags == flags) && (link->kernel_operstate == operstate)) |
51d18171 TG |
361 | return 0; |
362 | ||
363 | if (link->flags != flags) { | |
6a7a4e4d | 364 | 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 |
365 | FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags), |
366 | FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags), | |
367 | FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags), | |
368 | FLAG_STRING("UP", IFF_UP, link->flags, flags), | |
369 | FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags), | |
370 | FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags), | |
371 | FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags), | |
372 | FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags), | |
373 | FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags), | |
374 | FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags), | |
375 | FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags), | |
376 | FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags), | |
377 | FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags), | |
378 | FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags), | |
379 | FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags), | |
380 | FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags), | |
381 | FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags), | |
382 | FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags), | |
383 | FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags)); | |
384 | ||
385 | unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP | | |
386 | IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING | | |
387 | IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT | | |
388 | IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL | | |
389 | IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP | | |
390 | IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO); | |
391 | unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags); | |
392 | unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags); | |
393 | ||
394 | /* link flags are currently at most 18 bits, let's align to | |
395 | * printing 20 */ | |
396 | if (unknown_flags_added) | |
79008bdd | 397 | log_link_debug(link, |
6a7a4e4d | 398 | "Unknown link flags gained: %#.5x (ignoring)", |
51d18171 TG |
399 | unknown_flags_added); |
400 | ||
401 | if (unknown_flags_removed) | |
79008bdd | 402 | log_link_debug(link, |
6a7a4e4d | 403 | "Unknown link flags lost: %#.5x (ignoring)", |
51d18171 TG |
404 | unknown_flags_removed); |
405 | } | |
406 | ||
407 | link->flags = flags; | |
408 | link->kernel_operstate = operstate; | |
409 | ||
959f65d3 | 410 | link_update_operstate(link, true); |
51d18171 TG |
411 | |
412 | return 0; | |
413 | } | |
414 | ||
1c4baffc | 415 | static int link_new(Manager *manager, sd_netlink_message *message, Link **ret) { |
8e766630 | 416 | _cleanup_(link_unrefp) Link *link = NULL; |
6cad256d | 417 | const char *ifname, *kind = NULL; |
b710e6b6 | 418 | unsigned short iftype; |
572b21d9 YW |
419 | int r, ifindex; |
420 | uint16_t type; | |
f579559b | 421 | |
0c2f9b84 | 422 | assert(manager); |
505f8da7 | 423 | assert(message); |
f579559b TG |
424 | assert(ret); |
425 | ||
6cad256d TJ |
426 | /* check for link kind */ |
427 | r = sd_netlink_message_enter_container(message, IFLA_LINKINFO); | |
428 | if (r == 0) { | |
db2f8a2e | 429 | (void) sd_netlink_message_read_string(message, IFLA_INFO_KIND, &kind); |
6cad256d TJ |
430 | r = sd_netlink_message_exit_container(message); |
431 | if (r < 0) | |
432 | return r; | |
433 | } | |
434 | ||
1c4baffc | 435 | r = sd_netlink_message_get_type(message, &type); |
505f8da7 TG |
436 | if (r < 0) |
437 | return r; | |
438 | else if (type != RTM_NEWLINK) | |
439 | return -EINVAL; | |
440 | ||
441 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); | |
442 | if (r < 0) | |
443 | return r; | |
444 | else if (ifindex <= 0) | |
445 | return -EINVAL; | |
446 | ||
b710e6b6 LP |
447 | r = sd_rtnl_message_link_get_type(message, &iftype); |
448 | if (r < 0) | |
449 | return r; | |
450 | ||
1c4baffc | 451 | r = sd_netlink_message_read_string(message, IFLA_IFNAME, &ifname); |
505f8da7 TG |
452 | if (r < 0) |
453 | return r; | |
454 | ||
17f9c355 | 455 | link = new(Link, 1); |
f579559b TG |
456 | if (!link) |
457 | return -ENOMEM; | |
458 | ||
17f9c355 YW |
459 | *link = (Link) { |
460 | .n_ref = 1, | |
461 | .manager = manager, | |
462 | .state = LINK_STATE_PENDING, | |
17f9c355 YW |
463 | .ifindex = ifindex, |
464 | .iftype = iftype, | |
15761549 YW |
465 | |
466 | .n_dns = (unsigned) -1, | |
467 | .dns_default_route = -1, | |
468 | .llmnr = _RESOLVE_SUPPORT_INVALID, | |
469 | .mdns = _RESOLVE_SUPPORT_INVALID, | |
470 | .dnssec_mode = _DNSSEC_MODE_INVALID, | |
471 | .dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID, | |
17f9c355 YW |
472 | }; |
473 | ||
505f8da7 TG |
474 | link->ifname = strdup(ifname); |
475 | if (!link->ifname) | |
476 | return -ENOMEM; | |
f579559b | 477 | |
6cad256d TJ |
478 | if (kind) { |
479 | link->kind = strdup(kind); | |
480 | if (!link->kind) | |
481 | return -ENOMEM; | |
482 | } | |
483 | ||
cbff7170 TJ |
484 | r = sd_netlink_message_read_u32(message, IFLA_MASTER, (uint32_t *)&link->master_ifindex); |
485 | if (r < 0) | |
486 | log_link_debug_errno(link, r, "New device has no master, continuing without"); | |
487 | ||
1c4baffc | 488 | r = sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &link->mac); |
512922f8 | 489 | if (r < 0) |
34437b4f | 490 | log_link_debug_errno(link, r, "MAC address not found for new device, continuing without"); |
512922f8 | 491 | |
c643bda5 | 492 | r = ethtool_get_permanent_macaddr(&manager->ethtool_fd, link->ifname, &link->permanent_mac); |
4bb7cc82 YW |
493 | if (r < 0) |
494 | log_link_debug_errno(link, r, "Permanent MAC address not found for new device, continuing without: %m"); | |
495 | ||
c643bda5 YW |
496 | r = ethtool_get_driver(&manager->ethtool_fd, link->ifname, &link->driver); |
497 | if (r < 0) | |
498 | log_link_debug_errno(link, r, "Failed to get driver, continuing without: %m"); | |
499 | ||
572b21d9 YW |
500 | r = sd_netlink_message_read_strv(message, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &link->alternative_names); |
501 | if (r < 0 && r != -ENODATA) | |
502 | return r; | |
503 | ||
34437b4f | 504 | if (asprintf(&link->state_file, "/run/systemd/netif/links/%d", link->ifindex) < 0) |
315db1a8 | 505 | return -ENOMEM; |
fe8db0c5 | 506 | |
34437b4f | 507 | if (asprintf(&link->lease_file, "/run/systemd/netif/leases/%d", link->ifindex) < 0) |
68a8723c TG |
508 | return -ENOMEM; |
509 | ||
34437b4f | 510 | if (asprintf(&link->lldp_file, "/run/systemd/netif/lldp/%d", link->ifindex) < 0) |
49699bac SS |
511 | return -ENOMEM; |
512 | ||
d5099efc | 513 | r = hashmap_ensure_allocated(&manager->links, NULL); |
ae06ab10 TG |
514 | if (r < 0) |
515 | return r; | |
516 | ||
517 | r = hashmap_put(manager->links, INT_TO_PTR(link->ifindex), link); | |
f579559b TG |
518 | if (r < 0) |
519 | return r; | |
520 | ||
bb262ef0 | 521 | r = link_update_flags(link, message, false); |
51d18171 TG |
522 | if (r < 0) |
523 | return r; | |
524 | ||
1cc6c93a | 525 | *ret = TAKE_PTR(link); |
f579559b TG |
526 | |
527 | return 0; | |
528 | } | |
529 | ||
15761549 YW |
530 | void link_ntp_settings_clear(Link *link) { |
531 | link->ntp = strv_free(link->ntp); | |
532 | } | |
533 | ||
534 | void link_dns_settings_clear(Link *link) { | |
e77bd3fd YW |
535 | if (link->n_dns != (unsigned) -1) |
536 | for (unsigned i = 0; i < link->n_dns; i++) | |
537 | in_addr_full_free(link->dns[i]); | |
15761549 YW |
538 | link->dns = mfree(link->dns); |
539 | link->n_dns = (unsigned) -1; | |
540 | ||
541 | link->search_domains = ordered_set_free_free(link->search_domains); | |
542 | link->route_domains = ordered_set_free_free(link->route_domains); | |
543 | ||
544 | link->dns_default_route = -1; | |
545 | link->llmnr = _RESOLVE_SUPPORT_INVALID; | |
546 | link->mdns = _RESOLVE_SUPPORT_INVALID; | |
547 | link->dnssec_mode = _DNSSEC_MODE_INVALID; | |
548 | link->dns_over_tls_mode = _DNS_OVER_TLS_MODE_INVALID; | |
549 | ||
550 | link->dnssec_negative_trust_anchors = set_free_free(link->dnssec_negative_trust_anchors); | |
551 | } | |
552 | ||
1a6bb31f YW |
553 | static void link_free_engines(Link *link) { |
554 | if (!link) | |
555 | return; | |
556 | ||
557 | link->dhcp_server = sd_dhcp_server_unref(link->dhcp_server); | |
558 | link->dhcp_client = sd_dhcp_client_unref(link->dhcp_client); | |
559 | link->dhcp_lease = sd_dhcp_lease_unref(link->dhcp_lease); | |
1a6bb31f YW |
560 | |
561 | link->lldp = sd_lldp_unref(link->lldp); | |
562 | ||
563 | ndisc_flush(link); | |
564 | ||
565 | link->ipv4ll = sd_ipv4ll_unref(link->ipv4ll); | |
566 | link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); | |
1633c457 | 567 | link->dhcp6_lease = sd_dhcp6_lease_unref(link->dhcp6_lease); |
1a6bb31f YW |
568 | link->ndisc = sd_ndisc_unref(link->ndisc); |
569 | link->radv = sd_radv_unref(link->radv); | |
570 | } | |
571 | ||
8301aa0b | 572 | static Link *link_free(Link *link) { |
8301aa0b | 573 | assert(link); |
f579559b | 574 | |
15761549 YW |
575 | link_ntp_settings_clear(link); |
576 | link_dns_settings_clear(link); | |
577 | ||
8eec0b9d YW |
578 | link->routes = set_free(link->routes); |
579 | link->routes_foreign = set_free(link->routes_foreign); | |
6e537f62 YW |
580 | link->dhcp_routes = set_free(link->dhcp_routes); |
581 | link->dhcp_routes_old = set_free(link->dhcp_routes_old); | |
1633c457 YW |
582 | link->dhcp6_routes = set_free(link->dhcp6_routes); |
583 | link->dhcp6_routes_old = set_free(link->dhcp6_routes_old); | |
584 | link->dhcp6_pd_routes = set_free(link->dhcp6_pd_routes); | |
585 | link->dhcp6_pd_routes_old = set_free(link->dhcp6_pd_routes_old); | |
69203fba | 586 | link->ndisc_routes = set_free(link->ndisc_routes); |
adda1ed9 | 587 | |
8eec0b9d YW |
588 | link->nexthops = set_free(link->nexthops); |
589 | link->nexthops_foreign = set_free(link->nexthops_foreign); | |
c16c7808 | 590 | |
8eec0b9d YW |
591 | link->neighbors = set_free(link->neighbors); |
592 | link->neighbors_foreign = set_free(link->neighbors_foreign); | |
d1bdafd2 | 593 | |
8eec0b9d YW |
594 | link->addresses = set_free(link->addresses); |
595 | link->addresses_foreign = set_free(link->addresses_foreign); | |
aa651e88 | 596 | link->pool_addresses = set_free(link->pool_addresses); |
e5526518 | 597 | link->static_addresses = set_free(link->static_addresses); |
1633c457 YW |
598 | link->dhcp6_addresses = set_free(link->dhcp6_addresses); |
599 | link->dhcp6_addresses_old = set_free(link->dhcp6_addresses_old); | |
600 | link->dhcp6_pd_addresses = set_free(link->dhcp6_pd_addresses); | |
601 | link->dhcp6_pd_addresses_old = set_free(link->dhcp6_pd_addresses_old); | |
69203fba | 602 | link->ndisc_addresses = set_free(link->ndisc_addresses); |
adda1ed9 | 603 | |
7272b25e | 604 | link_lldp_emit_stop(link); |
1a6bb31f | 605 | link_free_engines(link); |
68a8723c | 606 | free(link->lease_file); |
49699bac SS |
607 | free(link->lldp_file); |
608 | ||
c166a070 | 609 | free(link->ifname); |
572b21d9 | 610 | strv_free(link->alternative_names); |
ceac4078 | 611 | free(link->kind); |
8d968fdd | 612 | free(link->ssid); |
c643bda5 | 613 | free(link->driver); |
6cad256d | 614 | |
db2f8a2e | 615 | (void) unlink(link->state_file); |
fe8db0c5 | 616 | free(link->state_file); |
c166a070 | 617 | |
51517f9e | 618 | sd_device_unref(link->sd_device); |
b5db00e5 | 619 | |
0d4ad91d | 620 | hashmap_free(link->bound_to_links); |
0d4ad91d AR |
621 | hashmap_free(link->bound_by_links); |
622 | ||
5f707e12 | 623 | set_free_with_destructor(link->slaves, link_unref); |
033295c1 | 624 | |
c9c908a6 YW |
625 | network_unref(link->network); |
626 | ||
8301aa0b | 627 | return mfree(link); |
14b746f7 TG |
628 | } |
629 | ||
8301aa0b | 630 | DEFINE_TRIVIAL_REF_UNREF_FUNC(Link, link, link_free); |
14b746f7 | 631 | |
11a7f229 TG |
632 | int link_get(Manager *m, int ifindex, Link **ret) { |
633 | Link *link; | |
11a7f229 TG |
634 | |
635 | assert(m); | |
e856ed00 | 636 | assert(ifindex > 0); |
11a7f229 TG |
637 | assert(ret); |
638 | ||
ae06ab10 | 639 | link = hashmap_get(m->links, INT_TO_PTR(ifindex)); |
11a7f229 TG |
640 | if (!link) |
641 | return -ENODEV; | |
642 | ||
643 | *ret = link; | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
af9ba57a | 648 | void link_set_state(Link *link, LinkState state) { |
e331e246 TG |
649 | assert(link); |
650 | ||
651 | if (link->state == state) | |
652 | return; | |
653 | ||
0beb9542 YW |
654 | log_link_debug(link, "State changed: %s -> %s", |
655 | link_state_to_string(link->state), | |
656 | link_state_to_string(state)); | |
657 | ||
e331e246 TG |
658 | link->state = state; |
659 | ||
660 | link_send_changed(link, "AdministrativeState", NULL); | |
e331e246 TG |
661 | } |
662 | ||
57bd6899 TG |
663 | static void link_enter_unmanaged(Link *link) { |
664 | assert(link); | |
665 | ||
e331e246 | 666 | link_set_state(link, LINK_STATE_UNMANAGED); |
57bd6899 | 667 | |
84de38c5 | 668 | link_dirty(link); |
57bd6899 TG |
669 | } |
670 | ||
95355a28 | 671 | int link_stop_clients(Link *link, bool may_keep_dhcp) { |
111bb8f9 TG |
672 | int r = 0, k; |
673 | ||
674 | assert(link); | |
675 | assert(link->manager); | |
676 | assert(link->manager->event); | |
677 | ||
80060352 ZJS |
678 | bool keep_dhcp = may_keep_dhcp && |
679 | link->network && | |
680 | (link->manager->restarting || | |
681 | FLAGS_SET(link->network->keep_configuration, KEEP_CONFIGURATION_DHCP_ON_STOP)); | |
682 | ||
683 | if (link->dhcp_client && !keep_dhcp) { | |
111bb8f9 | 684 | k = sd_dhcp_client_stop(link->dhcp_client); |
6a7a4e4d | 685 | if (k < 0) |
36c7d709 | 686 | r = log_link_warning_errno(link, k, "Could not stop DHCPv4 client: %m"); |
111bb8f9 TG |
687 | } |
688 | ||
ba179154 | 689 | if (link->ipv4ll) { |
111bb8f9 | 690 | k = sd_ipv4ll_stop(link->ipv4ll); |
6a7a4e4d | 691 | if (k < 0) |
36c7d709 | 692 | r = log_link_warning_errno(link, k, "Could not stop IPv4 link-local: %m"); |
dd43110f TG |
693 | } |
694 | ||
2488e4d9 YW |
695 | k = link_stop_ipv4_dad(link); |
696 | if (k < 0) | |
697 | r = log_link_warning_errno(link, k, "Could not stop IPv4 ACD client: %m"); | |
051e77ca | 698 | |
f5a8c43f TG |
699 | if (link->dhcp6_client) { |
700 | k = sd_dhcp6_client_stop(link->dhcp6_client); | |
701 | if (k < 0) | |
36c7d709 | 702 | r = log_link_warning_errno(link, k, "Could not stop DHCPv6 client: %m"); |
f5a8c43f | 703 | } |
4138fb2c | 704 | |
1633c457 YW |
705 | if (link_dhcp6_pd_is_enabled(link)) { |
706 | k = dhcp6_pd_remove(link); | |
707 | if (k < 0) | |
708 | r = log_link_warning_errno(link, k, "Could not remove DHCPv6 PD addresses and routes: %m"); | |
709 | } | |
710 | ||
1e7a0e21 LP |
711 | if (link->ndisc) { |
712 | k = sd_ndisc_stop(link->ndisc); | |
6a7a4e4d | 713 | if (k < 0) |
36c7d709 | 714 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Discovery: %m"); |
4138fb2c PF |
715 | } |
716 | ||
7465dd22 | 717 | if (link->radv) { |
290696e5 | 718 | k = sd_radv_stop(link->radv); |
7465dd22 PF |
719 | if (k < 0) |
720 | r = log_link_warning_errno(link, k, "Could not stop IPv6 Router Advertisement: %m"); | |
721 | } | |
722 | ||
7272b25e | 723 | link_lldp_emit_stop(link); |
111bb8f9 TG |
724 | return r; |
725 | } | |
726 | ||
b22d8a00 | 727 | void link_enter_failed(Link *link) { |
ef1ba606 | 728 | assert(link); |
f882c247 | 729 | |
370e9930 | 730 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
2139694e TG |
731 | return; |
732 | ||
6a7a4e4d | 733 | log_link_warning(link, "Failed"); |
449f7554 | 734 | |
e331e246 | 735 | link_set_state(link, LINK_STATE_FAILED); |
fe8db0c5 | 736 | |
95355a28 | 737 | link_stop_clients(link, false); |
111bb8f9 | 738 | |
84de38c5 | 739 | link_dirty(link); |
f882c247 TG |
740 | } |
741 | ||
7033af49 YW |
742 | static int link_join_netdevs_after_configured(Link *link) { |
743 | NetDev *netdev; | |
7033af49 YW |
744 | int r; |
745 | ||
90e74a66 | 746 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
7033af49 YW |
747 | if (netdev->ifindex > 0) |
748 | /* Assume already enslaved. */ | |
749 | continue; | |
750 | ||
751 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_AFTER_CONFIGURED) | |
752 | continue; | |
753 | ||
754 | log_struct(LOG_DEBUG, | |
755 | LOG_LINK_INTERFACE(link), | |
756 | LOG_NETDEV_INTERFACE(netdev), | |
757 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); | |
758 | ||
759 | r = netdev_join(netdev, link, NULL); | |
760 | if (r < 0) | |
761 | return log_struct_errno(LOG_WARNING, r, | |
762 | LOG_LINK_INTERFACE(link), | |
763 | LOG_NETDEV_INTERFACE(netdev), | |
764 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); | |
765 | } | |
766 | ||
767 | return 0; | |
768 | } | |
769 | ||
e3a7b048 | 770 | static void link_enter_configured(Link *link) { |
dd43110f TG |
771 | assert(link); |
772 | assert(link->network); | |
e3a7b048 | 773 | |
289e6774 | 774 | if (link->state != LINK_STATE_CONFIGURING) |
e3a7b048 | 775 | return; |
dd43110f | 776 | |
e331e246 | 777 | link_set_state(link, LINK_STATE_CONFIGURED); |
dd43110f | 778 | |
7033af49 YW |
779 | (void) link_join_netdevs_after_configured(link); |
780 | ||
84de38c5 | 781 | link_dirty(link); |
dd43110f TG |
782 | } |
783 | ||
6accfd31 DA |
784 | void link_check_ready(Link *link) { |
785 | Address *a; | |
6accfd31 DA |
786 | |
787 | assert(link); | |
788 | ||
5f58af25 YW |
789 | if (link->state == LINK_STATE_CONFIGURED) |
790 | return; | |
791 | ||
792 | if (link->state != LINK_STATE_CONFIGURING) { | |
793 | log_link_debug(link, "%s(): link is in %s state.", __func__, link_state_to_string(link->state)); | |
6accfd31 | 794 | return; |
39373cb9 | 795 | } |
6accfd31 DA |
796 | |
797 | if (!link->network) | |
798 | return; | |
799 | ||
39373cb9 YW |
800 | if (!link->addresses_configured) { |
801 | log_link_debug(link, "%s(): static addresses are not configured.", __func__); | |
6accfd31 | 802 | return; |
39373cb9 | 803 | } |
6accfd31 | 804 | |
39373cb9 YW |
805 | if (!link->neighbors_configured) { |
806 | log_link_debug(link, "%s(): static neighbors are not configured.", __func__); | |
6accfd31 | 807 | return; |
39373cb9 | 808 | } |
6accfd31 | 809 | |
90e74a66 | 810 | SET_FOREACH(a, link->addresses) |
39373cb9 YW |
811 | if (!address_is_ready(a)) { |
812 | _cleanup_free_ char *str = NULL; | |
813 | ||
814 | (void) in_addr_to_string(a->family, &a->in_addr, &str); | |
815 | log_link_debug(link, "%s(): an address %s/%d is not ready.", __func__, strnull(str), a->prefixlen); | |
6aa5773b | 816 | return; |
39373cb9 | 817 | } |
6aa5773b | 818 | |
39373cb9 YW |
819 | if (!link->static_routes_configured) { |
820 | log_link_debug(link, "%s(): static routes are not configured.", __func__); | |
6accfd31 | 821 | return; |
39373cb9 | 822 | } |
6accfd31 | 823 | |
39373cb9 YW |
824 | if (!link->static_nexthops_configured) { |
825 | log_link_debug(link, "%s(): static nexthops are not configured.", __func__); | |
c16c7808 | 826 | return; |
39373cb9 | 827 | } |
c16c7808 | 828 | |
39373cb9 YW |
829 | if (!link->routing_policy_rules_configured) { |
830 | log_link_debug(link, "%s(): static routing policy rules are not configured.", __func__); | |
6accfd31 | 831 | return; |
39373cb9 | 832 | } |
6accfd31 | 833 | |
39373cb9 YW |
834 | if (!link->tc_configured) { |
835 | log_link_debug(link, "%s(): traffic controls are not configured.", __func__); | |
4ecdcb07 | 836 | return; |
39373cb9 | 837 | } |
4ecdcb07 | 838 | |
39373cb9 YW |
839 | if (!link->sr_iov_configured) { |
840 | log_link_debug(link, "%s(): SR-IOV is not configured.", __func__); | |
518cd6b5 | 841 | return; |
39373cb9 | 842 | } |
518cd6b5 | 843 | |
1f241589 YW |
844 | if (!link->bridge_mdb_configured) { |
845 | log_link_debug(link, "%s(): Bridge MDB is not configured.", __func__); | |
846 | return; | |
847 | } | |
848 | ||
463797c1 | 849 | if (link_has_carrier(link) || !link->network->configure_without_carrier) { |
50550722 YW |
850 | bool has_ndisc_address = false; |
851 | NDiscAddress *n; | |
6accfd31 | 852 | |
1c09d84e | 853 | if (link_ipv4ll_enabled(link, ADDRESS_FAMILY_IPV4) && !link->ipv4ll_address_configured) { |
39373cb9 | 854 | log_link_debug(link, "%s(): IPv4LL is not configured.", __func__); |
463797c1 | 855 | return; |
39373cb9 | 856 | } |
6accfd31 | 857 | |
463797c1 | 858 | if (link_ipv6ll_enabled(link) && |
39373cb9 YW |
859 | in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) { |
860 | log_link_debug(link, "%s(): IPv6LL is not configured.", __func__); | |
463797c1 | 861 | return; |
39373cb9 | 862 | } |
6accfd31 | 863 | |
90e74a66 | 864 | SET_FOREACH(n, link->ndisc_addresses) |
50550722 YW |
865 | if (!n->marked) { |
866 | has_ndisc_address = true; | |
867 | break; | |
868 | } | |
869 | ||
15797d6a | 870 | if ((link_dhcp4_enabled(link) || link_dhcp6_enabled(link)) && |
50550722 | 871 | !link->dhcp_address && set_isempty(link->dhcp6_addresses) && !has_ndisc_address && |
15797d6a YW |
872 | !(link_ipv4ll_enabled(link, ADDRESS_FAMILY_FALLBACK_IPV4) && link->ipv4ll_address_configured)) { |
873 | log_link_debug(link, "%s(): DHCP4 or DHCP6 is enabled but no dynamic address is assigned yet.", __func__); | |
659ad3a0 YW |
874 | return; |
875 | } | |
876 | ||
1633c457 | 877 | if (link_dhcp4_enabled(link) || link_dhcp6_enabled(link) || link_dhcp6_pd_is_enabled(link) || link_ipv6_accept_ra_enabled(link)) { |
39373cb9 YW |
878 | if (!link->dhcp4_configured && |
879 | !(link->dhcp6_address_configured && link->dhcp6_route_configured) && | |
880 | !(link->dhcp6_pd_address_configured && link->dhcp6_pd_route_configured) && | |
d98c546d | 881 | !(link->ndisc_addresses_configured && link->ndisc_routes_configured) && |
1c09d84e | 882 | !(link_ipv4ll_enabled(link, ADDRESS_FAMILY_FALLBACK_IPV4) && link->ipv4ll_address_configured)) { |
39373cb9 YW |
883 | /* When DHCP or RA is enabled, at least one protocol must provide an address, or |
884 | * an IPv4ll fallback address must be configured. */ | |
885 | log_link_debug(link, "%s(): dynamic addresses or routes are not configured.", __func__); | |
886 | return; | |
887 | } | |
888 | ||
d98c546d | 889 | 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 |
890 | __func__, |
891 | yes_no(link->dhcp4_configured), | |
892 | yes_no(link->dhcp6_address_configured), | |
893 | yes_no(link->dhcp6_route_configured), | |
894 | yes_no(link->dhcp6_pd_address_configured), | |
895 | yes_no(link->dhcp6_pd_route_configured), | |
d98c546d YW |
896 | yes_no(link->ndisc_addresses_configured), |
897 | yes_no(link->ndisc_routes_configured)); | |
39373cb9 | 898 | } |
463797c1 | 899 | } |
6accfd31 | 900 | |
5f58af25 | 901 | link_enter_configured(link); |
6accfd31 DA |
902 | |
903 | return; | |
904 | } | |
905 | ||
682c65b0 | 906 | static int link_set_static_configs(Link *link) { |
f882c247 TG |
907 | int r; |
908 | ||
909 | assert(link); | |
910 | assert(link->network); | |
f5be5601 | 911 | assert(link->state != _LINK_STATE_INVALID); |
f882c247 | 912 | |
2428613f | 913 | /* Reset all *_configured flags we are configuring. */ |
9b966cee | 914 | link->request_static_addresses = false; |
2428613f | 915 | link->addresses_configured = false; |
6aa5773b | 916 | link->addresses_ready = false; |
2428613f YW |
917 | link->neighbors_configured = false; |
918 | link->static_routes_configured = false; | |
c16c7808 | 919 | link->static_nexthops_configured = false; |
2428613f YW |
920 | link->routing_policy_rules_configured = false; |
921 | ||
f6bb7ac5 TJ |
922 | r = link_set_bridge_fdb(link); |
923 | if (r < 0) | |
924 | return r; | |
925 | ||
1f241589 YW |
926 | r = link_set_bridge_mdb(link); |
927 | if (r < 0) | |
928 | return r; | |
929 | ||
58f1fe9a | 930 | r = link_set_neighbors(link); |
f3ef324d YW |
931 | if (r < 0) |
932 | return r; | |
e4a71bf3 | 933 | |
682c65b0 YW |
934 | r = link_set_addresses(link); |
935 | if (r < 0) | |
936 | return r; | |
bd6379ec | 937 | |
fe2bc17c YW |
938 | r = link_set_address_labels(link); |
939 | if (r < 0) | |
940 | return r; | |
f882c247 | 941 | |
e5526518 | 942 | /* now that we can figure out a default address for the dhcp server, start it */ |
5ae0fb7f YW |
943 | r = dhcp4_server_configure(link); |
944 | if (r < 0) | |
945 | return r; | |
d4cdbea5 | 946 | |
f882c247 TG |
947 | return 0; |
948 | } | |
949 | ||
a60a720c | 950 | static int link_set_proxy_arp(Link *link) { |
23d8b221 SS |
951 | int r; |
952 | ||
953 | if (!link_proxy_arp_enabled(link)) | |
954 | return 0; | |
955 | ||
62e021a9 | 956 | r = sysctl_write_ip_property_boolean(AF_INET, link->ifname, "proxy_arp", link->network->proxy_arp > 0); |
23d8b221 SS |
957 | if (r < 0) |
958 | log_link_warning_errno(link, r, "Cannot configure proxy ARP for interface: %m"); | |
959 | ||
960 | return 0; | |
961 | } | |
962 | ||
3a390124 | 963 | static int link_configure_continue(Link *link); |
55dc8c4a | 964 | |
302a796f | 965 | static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
4f882b2a TG |
966 | int r; |
967 | ||
968 | assert(m); | |
969 | assert(link); | |
970 | assert(link->ifname); | |
971 | ||
55dc8c4a YW |
972 | link->setting_mtu = false; |
973 | ||
5da8149f | 974 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
4f882b2a TG |
975 | return 1; |
976 | ||
1c4baffc | 977 | r = sd_netlink_message_get_errno(m); |
4ff296b0 | 978 | if (r < 0) |
5ecb131d | 979 | log_link_message_warning_errno(link, m, r, "Could not set MTU, ignoring"); |
4ff296b0 YW |
980 | else |
981 | log_link_debug(link, "Setting MTU done."); | |
55dc8c4a | 982 | |
4ff296b0 | 983 | if (link->state == LINK_STATE_INITIALIZED) { |
3a390124 | 984 | r = link_configure_continue(link); |
4ff296b0 YW |
985 | if (r < 0) |
986 | link_enter_failed(link); | |
987 | } | |
4f882b2a TG |
988 | |
989 | return 1; | |
990 | } | |
991 | ||
933c70a0 | 992 | int link_set_mtu(Link *link, uint32_t mtu) { |
4afd3348 | 993 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f882b2a TG |
994 | int r; |
995 | ||
996 | assert(link); | |
997 | assert(link->manager); | |
998 | assert(link->manager->rtnl); | |
999 | ||
40288ece YW |
1000 | if (mtu == 0 || link->setting_mtu) |
1001 | return 0; | |
1002 | ||
933c70a0 | 1003 | if (link->mtu == mtu) |
ee493106 YW |
1004 | return 0; |
1005 | ||
6a7a4e4d | 1006 | log_link_debug(link, "Setting MTU: %" PRIu32, mtu); |
4f882b2a | 1007 | |
6a7a4e4d LP |
1008 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1009 | if (r < 0) | |
1010 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
4f882b2a | 1011 | |
44b598a1 | 1012 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes |
72c2500b YW |
1013 | * on the interface. Bump up MTU bytes to IPV6_MTU_MIN. */ |
1014 | if (link_ipv6_enabled(link) && mtu < IPV6_MIN_MTU) { | |
44b598a1 SS |
1015 | |
1016 | log_link_warning(link, "Bumping MTU to " STRINGIFY(IPV6_MIN_MTU) ", as " | |
d236718c | 1017 | "IPv6 is requested and requires a minimum MTU of " STRINGIFY(IPV6_MIN_MTU) " bytes"); |
44b598a1 | 1018 | |
72c2500b | 1019 | mtu = IPV6_MIN_MTU; |
44b598a1 SS |
1020 | } |
1021 | ||
1c4baffc | 1022 | r = sd_netlink_message_append_u32(req, IFLA_MTU, mtu); |
6a7a4e4d LP |
1023 | if (r < 0) |
1024 | return log_link_error_errno(link, r, "Could not append MTU: %m"); | |
4f882b2a | 1025 | |
302a796f YW |
1026 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_mtu_handler, |
1027 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1028 | if (r < 0) |
1029 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
4f882b2a | 1030 | |
ae941762 | 1031 | link_ref(link); |
1046bf9b | 1032 | link->setting_mtu = true; |
b226d99b | 1033 | |
4f882b2a TG |
1034 | return 0; |
1035 | } | |
1036 | ||
f6fcc1c2 YW |
1037 | static bool link_reduces_vlan_mtu(Link *link) { |
1038 | /* See netif_reduces_vlan_mtu() in kernel. */ | |
1039 | return streq_ptr(link->kind, "macsec"); | |
1040 | } | |
1041 | ||
1042 | static uint32_t link_get_requested_mtu_by_stacked_netdevs(Link *link) { | |
1043 | uint32_t mtu = 0; | |
1044 | NetDev *dev; | |
f6fcc1c2 | 1045 | |
90e74a66 | 1046 | HASHMAP_FOREACH(dev, link->network->stacked_netdevs) |
f6fcc1c2 YW |
1047 | if (dev->kind == NETDEV_KIND_VLAN && dev->mtu > 0) |
1048 | /* See vlan_dev_change_mtu() in kernel. */ | |
1049 | mtu = MAX(mtu, link_reduces_vlan_mtu(link) ? dev->mtu + 4 : dev->mtu); | |
1050 | ||
1051 | else if (dev->kind == NETDEV_KIND_MACVLAN && dev->mtu > mtu) | |
1052 | /* See macvlan_change_mtu() in kernel. */ | |
1053 | mtu = dev->mtu; | |
1054 | ||
1055 | return mtu; | |
1056 | } | |
1057 | ||
1058 | static int link_configure_mtu(Link *link) { | |
1059 | uint32_t mtu; | |
1060 | ||
1061 | assert(link); | |
1062 | assert(link->network); | |
1063 | ||
1064 | if (link->network->mtu > 0) | |
1065 | return link_set_mtu(link, link->network->mtu); | |
1066 | ||
1067 | mtu = link_get_requested_mtu_by_stacked_netdevs(link); | |
1068 | if (link->mtu >= mtu) | |
1069 | return 0; | |
1070 | ||
1071 | log_link_notice(link, "Bumping MTU bytes from %"PRIu32" to %"PRIu32" because of stacked device. " | |
1072 | "If it is not desired, then please explicitly specify MTUBytes= setting.", | |
1073 | link->mtu, mtu); | |
1074 | ||
1075 | return link_set_mtu(link, mtu); | |
1076 | } | |
1077 | ||
302a796f | 1078 | static int set_flags_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
99d2baa2 SS |
1079 | int r; |
1080 | ||
1081 | assert(m); | |
1082 | assert(link); | |
1083 | assert(link->ifname); | |
1084 | ||
1085 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1086 | return 1; | |
1087 | ||
1088 | r = sd_netlink_message_get_errno(m); | |
1089 | if (r < 0) | |
5ecb131d | 1090 | log_link_message_warning_errno(link, m, r, "Could not set link flags, ignoring"); |
99d2baa2 SS |
1091 | |
1092 | return 1; | |
1093 | } | |
1094 | ||
1095 | static int link_set_flags(Link *link) { | |
1096 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1097 | unsigned ifi_change = 0; | |
1098 | unsigned ifi_flags = 0; | |
1099 | int r; | |
1100 | ||
1101 | assert(link); | |
1102 | assert(link->manager); | |
1103 | assert(link->manager->rtnl); | |
1104 | ||
1105 | if (link->flags & IFF_LOOPBACK) | |
1106 | return 0; | |
1107 | ||
1108 | if (!link->network) | |
1109 | return 0; | |
1110 | ||
866e6b7a | 1111 | if (link->network->arp < 0 && link->network->multicast < 0 && link->network->allmulticast < 0) |
99d2baa2 SS |
1112 | return 0; |
1113 | ||
1114 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1115 | if (r < 0) | |
1116 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1117 | ||
1118 | if (link->network->arp >= 0) { | |
1119 | ifi_change |= IFF_NOARP; | |
e6ebebbe SS |
1120 | SET_FLAG(ifi_flags, IFF_NOARP, link->network->arp == 0); |
1121 | } | |
1122 | ||
1123 | if (link->network->multicast >= 0) { | |
1124 | ifi_change |= IFF_MULTICAST; | |
1125 | SET_FLAG(ifi_flags, IFF_MULTICAST, link->network->multicast); | |
99d2baa2 SS |
1126 | } |
1127 | ||
866e6b7a SS |
1128 | if (link->network->allmulticast >= 0) { |
1129 | ifi_change |= IFF_ALLMULTI; | |
1130 | SET_FLAG(ifi_flags, IFF_ALLMULTI, link->network->allmulticast); | |
1131 | } | |
1132 | ||
99d2baa2 SS |
1133 | r = sd_rtnl_message_link_set_flags(req, ifi_flags, ifi_change); |
1134 | if (r < 0) | |
1135 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
1136 | ||
302a796f YW |
1137 | r = netlink_call_async(link->manager->rtnl, NULL, req, set_flags_handler, |
1138 | link_netlink_destroy_callback, link); | |
99d2baa2 SS |
1139 | if (r < 0) |
1140 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1141 | ||
1142 | link_ref(link); | |
1143 | ||
1144 | return 0; | |
1145 | } | |
1146 | ||
e7ab854c TG |
1147 | static int link_acquire_ipv6_conf(Link *link) { |
1148 | int r; | |
1149 | ||
1150 | assert(link); | |
1151 | ||
e7ab854c | 1152 | if (link_ipv6_accept_ra_enabled(link)) { |
1e7a0e21 | 1153 | assert(link->ndisc); |
e7ab854c TG |
1154 | |
1155 | log_link_debug(link, "Discovering IPv6 routers"); | |
1156 | ||
1e7a0e21 | 1157 | r = sd_ndisc_start(link->ndisc); |
63348d13 | 1158 | if (r < 0 && r != -EBUSY) |
e7ab854c TG |
1159 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); |
1160 | } | |
1161 | ||
086b8853 | 1162 | if (link->radv) { |
7465dd22 PF |
1163 | assert(link->radv); |
1164 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); | |
1165 | ||
1166 | log_link_debug(link, "Starting IPv6 Router Advertisements"); | |
1167 | ||
fd3ef936 YW |
1168 | r = radv_emit_dns(link); |
1169 | if (r < 0) | |
1170 | return log_link_warning_errno(link, r, "Failed to configure DNS or Domains in IPv6 Router Advertisement: %m"); | |
1171 | ||
7465dd22 PF |
1172 | r = sd_radv_start(link->radv); |
1173 | if (r < 0 && r != -EBUSY) | |
1174 | return log_link_warning_errno(link, r, "Could not start IPv6 Router Advertisement: %m"); | |
1175 | } | |
1176 | ||
838d39af SS |
1177 | if (link_dhcp6_enabled(link) && IN_SET(link->network->dhcp6_without_ra, |
1178 | DHCP6_CLIENT_START_MODE_INFORMATION_REQUEST, | |
1179 | DHCP6_CLIENT_START_MODE_SOLICIT)) { | |
cd305af1 SS |
1180 | assert(link->dhcp6_client); |
1181 | assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); | |
1182 | ||
838d39af | 1183 | r = dhcp6_request_address(link, link->network->dhcp6_without_ra == DHCP6_CLIENT_START_MODE_INFORMATION_REQUEST); |
cd305af1 | 1184 | if (r < 0 && r != -EBUSY) |
1633c457 | 1185 | return log_link_warning_errno(link, r, "Could not acquire DHCPv6 lease: %m"); |
cd305af1 SS |
1186 | else |
1187 | log_link_debug(link, "Acquiring DHCPv6 lease"); | |
1188 | } | |
1189 | ||
1633c457 YW |
1190 | r = dhcp6_request_prefix_delegation(link); |
1191 | if (r < 0) | |
1192 | return log_link_warning_errno(link, r, "Failed to request DHCPv6 prefix delegation: %m"); | |
10752343 | 1193 | |
e7ab854c TG |
1194 | return 0; |
1195 | } | |
1196 | ||
6fc25497 | 1197 | static int link_acquire_ipv4_conf(Link *link) { |
ff254138 TG |
1198 | int r; |
1199 | ||
1200 | assert(link); | |
ff254138 TG |
1201 | assert(link->manager); |
1202 | assert(link->manager->event); | |
1203 | ||
910feb78 | 1204 | if (link_ipv4ll_enabled(link, ADDRESS_FAMILY_IPV4)) { |
eb34d4af | 1205 | assert(link->ipv4ll); |
ff254138 | 1206 | |
6a7a4e4d | 1207 | log_link_debug(link, "Acquiring IPv4 link-local address"); |
5c1d3fc9 UTL |
1208 | |
1209 | r = sd_ipv4ll_start(link->ipv4ll); | |
6a7a4e4d LP |
1210 | if (r < 0) |
1211 | return log_link_warning_errno(link, r, "Could not acquire IPv4 link-local address: %m"); | |
5c1d3fc9 UTL |
1212 | } |
1213 | ||
78c958f8 | 1214 | if (link_dhcp4_enabled(link)) { |
eb34d4af | 1215 | assert(link->dhcp_client); |
ff254138 | 1216 | |
6a7a4e4d | 1217 | log_link_debug(link, "Acquiring DHCPv4 lease"); |
ab47d620 | 1218 | |
5c1d3fc9 | 1219 | r = sd_dhcp_client_start(link->dhcp_client); |
6a7a4e4d LP |
1220 | if (r < 0) |
1221 | return log_link_warning_errno(link, r, "Could not acquire DHCPv4 lease: %m"); | |
5c1d3fc9 | 1222 | } |
ff254138 | 1223 | |
6fc25497 SS |
1224 | return 0; |
1225 | } | |
1226 | ||
1227 | static int link_acquire_conf(Link *link) { | |
1228 | int r; | |
1229 | ||
1230 | assert(link); | |
1231 | ||
1232 | r = link_acquire_ipv4_conf(link); | |
1233 | if (r < 0) | |
1234 | return r; | |
1235 | ||
3f7cc080 | 1236 | if (!in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address)) { |
6fc25497 SS |
1237 | r = link_acquire_ipv6_conf(link); |
1238 | if (r < 0) | |
1239 | return r; | |
1240 | } | |
1241 | ||
7272b25e LP |
1242 | if (link_lldp_emit_enabled(link)) { |
1243 | r = link_lldp_emit_start(link); | |
8e1ad1ea LP |
1244 | if (r < 0) |
1245 | return log_link_warning_errno(link, r, "Failed to start LLDP transmission: %m"); | |
1246 | } | |
1247 | ||
ff254138 TG |
1248 | return 0; |
1249 | } | |
1250 | ||
a61bb41c | 1251 | bool link_has_carrier(Link *link) { |
deb2e523 TG |
1252 | /* see Documentation/networking/operstates.txt in the kernel sources */ |
1253 | ||
a61bb41c | 1254 | if (link->kernel_operstate == IF_OPER_UP) |
deb2e523 TG |
1255 | return true; |
1256 | ||
a61bb41c | 1257 | if (link->kernel_operstate == IF_OPER_UNKNOWN) |
deb2e523 | 1258 | /* operstate may not be implemented, so fall back to flags */ |
b26ea308 YW |
1259 | if (FLAGS_SET(link->flags, IFF_LOWER_UP | IFF_RUNNING) && |
1260 | !FLAGS_SET(link->flags, IFF_DORMANT)) | |
deb2e523 TG |
1261 | return true; |
1262 | ||
1263 | return false; | |
1264 | } | |
1265 | ||
0e2fdb83 SS |
1266 | static int link_address_genmode_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1267 | int r; | |
1268 | ||
1269 | assert(link); | |
1270 | ||
9524014e DS |
1271 | link->setting_genmode = false; |
1272 | ||
0e2fdb83 SS |
1273 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1274 | return 1; | |
1275 | ||
1276 | r = sd_netlink_message_get_errno(m); | |
1277 | if (r < 0) | |
5ecb131d | 1278 | log_link_message_warning_errno(link, m, r, "Could not set address genmode for interface, ignoring"); |
9524014e DS |
1279 | else |
1280 | log_link_debug(link, "Setting address genmode done."); | |
1281 | ||
1282 | if (link->state == LINK_STATE_INITIALIZED) { | |
1283 | r = link_configure_continue(link); | |
1284 | if (r < 0) | |
1285 | link_enter_failed(link); | |
1286 | } | |
0e2fdb83 SS |
1287 | |
1288 | return 1; | |
1289 | } | |
1290 | ||
1291 | static int link_configure_addrgen_mode(Link *link) { | |
1292 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1293 | uint8_t ipv6ll_mode; | |
1294 | int r; | |
1295 | ||
1296 | assert(link); | |
1297 | assert(link->network); | |
1298 | assert(link->manager); | |
1299 | assert(link->manager->rtnl); | |
1300 | ||
9524014e | 1301 | if (!socket_ipv6_is_supported() || link->setting_genmode) |
9f6e82e6 YW |
1302 | return 0; |
1303 | ||
0e2fdb83 SS |
1304 | log_link_debug(link, "Setting address genmode for link"); |
1305 | ||
1306 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1307 | if (r < 0) | |
1308 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1309 | ||
1310 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); | |
1311 | if (r < 0) | |
1312 | return log_link_error_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
1313 | ||
1314 | r = sd_netlink_message_open_container(req, AF_INET6); | |
1315 | if (r < 0) | |
1316 | return log_link_error_errno(link, r, "Could not open AF_INET6 container: %m"); | |
1317 | ||
1318 | if (!link_ipv6ll_enabled(link)) | |
1319 | ipv6ll_mode = IN6_ADDR_GEN_MODE_NONE; | |
6f6296b9 | 1320 | else if (link->network->ipv6ll_address_gen_mode < 0) { |
a6f1848a SS |
1321 | r = sysctl_read_ip_property(AF_INET6, link->ifname, "stable_secret", NULL); |
1322 | if (r < 0) { | |
1323 | /* The file may not exist. And even if it exists, when stable_secret is unset, | |
1324 | * reading the file fails with EIO. */ | |
1325 | log_link_debug_errno(link, r, "Failed to read sysctl property stable_secret: %m"); | |
1326 | ||
1327 | ipv6ll_mode = IN6_ADDR_GEN_MODE_EUI64; | |
1328 | } else | |
1329 | ipv6ll_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
1330 | } else | |
6f6296b9 | 1331 | ipv6ll_mode = link->network->ipv6ll_address_gen_mode; |
0e2fdb83 SS |
1332 | |
1333 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, ipv6ll_mode); | |
1334 | if (r < 0) | |
1335 | return log_link_error_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE: %m"); | |
1336 | ||
1337 | r = sd_netlink_message_close_container(req); | |
1338 | if (r < 0) | |
1339 | return log_link_error_errno(link, r, "Could not close AF_INET6 container: %m"); | |
1340 | ||
1341 | r = sd_netlink_message_close_container(req); | |
1342 | if (r < 0) | |
1343 | return log_link_error_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
1344 | ||
1345 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_address_genmode_handler, | |
1346 | link_netlink_destroy_callback, link); | |
1347 | if (r < 0) | |
1348 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1349 | ||
1350 | link_ref(link); | |
9524014e | 1351 | link->setting_genmode = true; |
0e2fdb83 SS |
1352 | |
1353 | return 0; | |
1354 | } | |
1355 | ||
302a796f | 1356 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
dd3efc09 TG |
1357 | int r; |
1358 | ||
1746cf2a TG |
1359 | assert(link); |
1360 | ||
5da8149f | 1361 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
1746cf2a TG |
1362 | return 1; |
1363 | ||
1c4baffc | 1364 | r = sd_netlink_message_get_errno(m); |
6a7a4e4d | 1365 | if (r < 0) |
26d6b214 | 1366 | /* we warn but don't fail the link, as it may be brought up later */ |
5ecb131d | 1367 | log_link_message_warning_errno(link, m, r, "Could not bring up interface"); |
45ad2c13 | 1368 | |
f882c247 TG |
1369 | return 1; |
1370 | } | |
1371 | ||
1cc84f3b | 1372 | static int link_up(Link *link) { |
4afd3348 | 1373 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
f579559b TG |
1374 | int r; |
1375 | ||
f882c247 | 1376 | assert(link); |
c106cc36 | 1377 | assert(link->network); |
f882c247 TG |
1378 | assert(link->manager); |
1379 | assert(link->manager->rtnl); | |
1380 | ||
6a7a4e4d | 1381 | log_link_debug(link, "Bringing link up"); |
449f7554 | 1382 | |
6a7a4e4d LP |
1383 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); |
1384 | if (r < 0) | |
1385 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
f579559b | 1386 | |
2b2d8603 | 1387 | /* set it free if not enslaved with networkd */ |
6cb955c6 | 1388 | if (!link->network->bridge && !link->network->bond && !link->network->vrf) { |
2b2d8603 TY |
1389 | r = sd_netlink_message_append_u32(req, IFLA_MASTER, 0); |
1390 | if (r < 0) | |
1391 | return log_link_error_errno(link, r, "Could not append IFLA_MASTER attribute: %m"); | |
1392 | } | |
1393 | ||
5d4795f3 | 1394 | r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP); |
6a7a4e4d LP |
1395 | if (r < 0) |
1396 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
fc25d7f8 | 1397 | |
c106cc36 | 1398 | if (link->network->mac) { |
1c4baffc | 1399 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); |
6a7a4e4d LP |
1400 | if (r < 0) |
1401 | return log_link_error_errno(link, r, "Could not set MAC address: %m"); | |
c106cc36 TG |
1402 | } |
1403 | ||
302a796f YW |
1404 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_up_handler, |
1405 | link_netlink_destroy_callback, link); | |
6a7a4e4d LP |
1406 | if (r < 0) |
1407 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
f579559b | 1408 | |
b226d99b TG |
1409 | link_ref(link); |
1410 | ||
f882c247 TG |
1411 | return 0; |
1412 | } | |
1413 | ||
302a796f | 1414 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
0d4ad91d AR |
1415 | int r; |
1416 | ||
1417 | assert(link); | |
1418 | ||
1419 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1420 | return 1; | |
1421 | ||
1c4baffc | 1422 | r = sd_netlink_message_get_errno(m); |
0d4ad91d | 1423 | if (r < 0) |
5ecb131d | 1424 | log_link_message_warning_errno(link, m, r, "Could not bring down interface"); |
0d4ad91d AR |
1425 | |
1426 | return 1; | |
1427 | } | |
1428 | ||
8e54db83 | 1429 | int link_down(Link *link, link_netlink_message_handler_t callback) { |
4afd3348 | 1430 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
0d4ad91d AR |
1431 | int r; |
1432 | ||
1433 | assert(link); | |
1434 | assert(link->manager); | |
1435 | assert(link->manager->rtnl); | |
1436 | ||
6a7a4e4d | 1437 | log_link_debug(link, "Bringing link down"); |
0d4ad91d AR |
1438 | |
1439 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, | |
1440 | RTM_SETLINK, link->ifindex); | |
6a7a4e4d LP |
1441 | if (r < 0) |
1442 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
0d4ad91d AR |
1443 | |
1444 | r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP); | |
6a7a4e4d LP |
1445 | if (r < 0) |
1446 | return log_link_error_errno(link, r, "Could not set link flags: %m"); | |
0d4ad91d | 1447 | |
8e54db83 YW |
1448 | r = netlink_call_async(link->manager->rtnl, NULL, req, |
1449 | callback ?: link_down_handler, | |
302a796f | 1450 | link_netlink_destroy_callback, link); |
6a7a4e4d LP |
1451 | if (r < 0) |
1452 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
0d4ad91d AR |
1453 | |
1454 | link_ref(link); | |
1455 | ||
1456 | return 0; | |
1457 | } | |
1458 | ||
89fe6535 SS |
1459 | static int link_group_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1460 | int r; | |
1461 | ||
1462 | assert(link); | |
1463 | ||
1464 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
1465 | return 1; | |
1466 | ||
1467 | r = sd_netlink_message_get_errno(m); | |
1468 | if (r < 0) | |
1469 | log_link_message_warning_errno(link, m, r, "Could not set group for the interface"); | |
1470 | ||
1471 | return 1; | |
1472 | } | |
1473 | ||
1474 | static int link_set_group(Link *link) { | |
1475 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
1476 | int r; | |
1477 | ||
1478 | assert(link); | |
1479 | assert(link->network); | |
1480 | assert(link->manager); | |
1481 | assert(link->manager->rtnl); | |
1482 | ||
1483 | if (link->network->group <= 0) | |
1484 | return 0; | |
1485 | ||
1486 | log_link_debug(link, "Setting group"); | |
1487 | ||
1488 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
1489 | if (r < 0) | |
1490 | return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
1491 | ||
1492 | r = sd_netlink_message_append_u32(req, IFLA_GROUP, link->network->group); | |
1493 | if (r < 0) | |
1494 | return log_link_error_errno(link, r, "Could not set link group: %m"); | |
1495 | ||
1496 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_group_handler, | |
1497 | link_netlink_destroy_callback, link); | |
1498 | if (r < 0) | |
1499 | return log_link_error_errno(link, r, "Could not send rtnetlink message: %m"); | |
1500 | ||
1501 | link_ref(link); | |
1502 | ||
1503 | return 0; | |
1504 | } | |
1505 | ||
0d4ad91d AR |
1506 | static int link_handle_bound_to_list(Link *link) { |
1507 | Link *l; | |
0d4ad91d AR |
1508 | int r; |
1509 | bool required_up = false; | |
1510 | bool link_is_up = false; | |
1511 | ||
1512 | assert(link); | |
1513 | ||
1514 | if (hashmap_isempty(link->bound_to_links)) | |
1515 | return 0; | |
1516 | ||
1517 | if (link->flags & IFF_UP) | |
1518 | link_is_up = true; | |
1519 | ||
90e74a66 | 1520 | HASHMAP_FOREACH (l, link->bound_to_links) |
0d4ad91d AR |
1521 | if (link_has_carrier(l)) { |
1522 | required_up = true; | |
1523 | break; | |
1524 | } | |
1525 | ||
1526 | if (!required_up && link_is_up) { | |
8e54db83 | 1527 | r = link_down(link, NULL); |
0d4ad91d AR |
1528 | if (r < 0) |
1529 | return r; | |
1530 | } else if (required_up && !link_is_up) { | |
1531 | r = link_up(link); | |
1532 | if (r < 0) | |
1533 | return r; | |
1534 | } | |
1535 | ||
1536 | return 0; | |
1537 | } | |
1538 | ||
1539 | static int link_handle_bound_by_list(Link *link) { | |
0d4ad91d AR |
1540 | Link *l; |
1541 | int r; | |
1542 | ||
1543 | assert(link); | |
1544 | ||
1545 | if (hashmap_isempty(link->bound_by_links)) | |
1546 | return 0; | |
1547 | ||
90e74a66 | 1548 | HASHMAP_FOREACH (l, link->bound_by_links) { |
0d4ad91d AR |
1549 | r = link_handle_bound_to_list(l); |
1550 | if (r < 0) | |
1551 | return r; | |
1552 | } | |
1553 | ||
1554 | return 0; | |
1555 | } | |
1556 | ||
1557 | static int link_put_carrier(Link *link, Link *carrier, Hashmap **h) { | |
1558 | int r; | |
1559 | ||
1560 | assert(link); | |
1561 | assert(carrier); | |
1562 | ||
1563 | if (link == carrier) | |
1564 | return 0; | |
1565 | ||
1566 | if (hashmap_get(*h, INT_TO_PTR(carrier->ifindex))) | |
1567 | return 0; | |
1568 | ||
1569 | r = hashmap_ensure_allocated(h, NULL); | |
1570 | if (r < 0) | |
1571 | return r; | |
1572 | ||
1573 | r = hashmap_put(*h, INT_TO_PTR(carrier->ifindex), carrier); | |
1574 | if (r < 0) | |
1575 | return r; | |
1576 | ||
1577 | return 0; | |
1578 | } | |
1579 | ||
1580 | static int link_new_bound_by_list(Link *link) { | |
1581 | Manager *m; | |
1582 | Link *carrier; | |
0d4ad91d AR |
1583 | int r; |
1584 | bool list_updated = false; | |
1585 | ||
1586 | assert(link); | |
1587 | assert(link->manager); | |
1588 | ||
1589 | m = link->manager; | |
1590 | ||
90e74a66 | 1591 | HASHMAP_FOREACH(carrier, m->links) { |
0d4ad91d AR |
1592 | if (!carrier->network) |
1593 | continue; | |
1594 | ||
1595 | if (strv_isempty(carrier->network->bind_carrier)) | |
1596 | continue; | |
1597 | ||
191a3f16 | 1598 | if (strv_fnmatch(carrier->network->bind_carrier, link->ifname)) { |
0d4ad91d AR |
1599 | r = link_put_carrier(link, carrier, &link->bound_by_links); |
1600 | if (r < 0) | |
1601 | return r; | |
1602 | ||
1603 | list_updated = true; | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | if (list_updated) | |
84de38c5 | 1608 | link_dirty(link); |
0d4ad91d | 1609 | |
90e74a66 | 1610 | HASHMAP_FOREACH(carrier, link->bound_by_links) { |
0d4ad91d AR |
1611 | r = link_put_carrier(carrier, link, &carrier->bound_to_links); |
1612 | if (r < 0) | |
1613 | return r; | |
1614 | ||
84de38c5 | 1615 | link_dirty(carrier); |
0d4ad91d AR |
1616 | } |
1617 | ||
1618 | return 0; | |
1619 | } | |
1620 | ||
1621 | static int link_new_bound_to_list(Link *link) { | |
1622 | Manager *m; | |
1623 | Link *carrier; | |
0d4ad91d AR |
1624 | int r; |
1625 | bool list_updated = false; | |
1626 | ||
1627 | assert(link); | |
1628 | assert(link->manager); | |
1629 | ||
1630 | if (!link->network) | |
1631 | return 0; | |
1632 | ||
1633 | if (strv_isempty(link->network->bind_carrier)) | |
1634 | return 0; | |
1635 | ||
1636 | m = link->manager; | |
1637 | ||
90e74a66 | 1638 | HASHMAP_FOREACH (carrier, m->links) { |
191a3f16 | 1639 | if (strv_fnmatch(link->network->bind_carrier, carrier->ifname)) { |
0d4ad91d AR |
1640 | r = link_put_carrier(link, carrier, &link->bound_to_links); |
1641 | if (r < 0) | |
1642 | return r; | |
1643 | ||
1644 | list_updated = true; | |
1645 | } | |
1646 | } | |
1647 | ||
1648 | if (list_updated) | |
84de38c5 | 1649 | link_dirty(link); |
0d4ad91d | 1650 | |
90e74a66 | 1651 | HASHMAP_FOREACH (carrier, link->bound_to_links) { |
0d4ad91d AR |
1652 | r = link_put_carrier(carrier, link, &carrier->bound_by_links); |
1653 | if (r < 0) | |
1654 | return r; | |
1655 | ||
84de38c5 | 1656 | link_dirty(carrier); |
0d4ad91d AR |
1657 | } |
1658 | ||
1659 | return 0; | |
1660 | } | |
1661 | ||
1662 | static int link_new_carrier_maps(Link *link) { | |
1663 | int r; | |
1664 | ||
1665 | r = link_new_bound_by_list(link); | |
1666 | if (r < 0) | |
1667 | return r; | |
1668 | ||
1669 | r = link_handle_bound_by_list(link); | |
1670 | if (r < 0) | |
1671 | return r; | |
1672 | ||
1673 | r = link_new_bound_to_list(link); | |
1674 | if (r < 0) | |
1675 | return r; | |
1676 | ||
1677 | r = link_handle_bound_to_list(link); | |
1678 | if (r < 0) | |
1679 | return r; | |
1680 | ||
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | static void link_free_bound_to_list(Link *link) { | |
1685 | Link *bound_to; | |
0d4ad91d | 1686 | |
90e74a66 | 1687 | HASHMAP_FOREACH (bound_to, link->bound_to_links) { |
0d4ad91d AR |
1688 | hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); |
1689 | ||
1690 | if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) | |
84de38c5 | 1691 | link_dirty(bound_to); |
0d4ad91d AR |
1692 | } |
1693 | ||
1694 | return; | |
1695 | } | |
1696 | ||
1697 | static void link_free_bound_by_list(Link *link) { | |
1698 | Link *bound_by; | |
0d4ad91d | 1699 | |
90e74a66 | 1700 | HASHMAP_FOREACH (bound_by, link->bound_by_links) { |
0d4ad91d AR |
1701 | hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); |
1702 | ||
1703 | if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { | |
84de38c5 | 1704 | link_dirty(bound_by); |
0d4ad91d AR |
1705 | link_handle_bound_to_list(bound_by); |
1706 | } | |
1707 | } | |
1708 | ||
1709 | return; | |
1710 | } | |
1711 | ||
1712 | static void link_free_carrier_maps(Link *link) { | |
1713 | bool list_updated = false; | |
1714 | ||
1715 | assert(link); | |
1716 | ||
1717 | if (!hashmap_isempty(link->bound_to_links)) { | |
1718 | link_free_bound_to_list(link); | |
1719 | list_updated = true; | |
1720 | } | |
1721 | ||
1722 | if (!hashmap_isempty(link->bound_by_links)) { | |
1723 | link_free_bound_by_list(link); | |
1724 | list_updated = true; | |
1725 | } | |
1726 | ||
1727 | if (list_updated) | |
84de38c5 | 1728 | link_dirty(link); |
0d4ad91d AR |
1729 | |
1730 | return; | |
1731 | } | |
1732 | ||
5f707e12 YW |
1733 | static int link_append_to_master(Link *link, NetDev *netdev) { |
1734 | Link *master; | |
1735 | int r; | |
1736 | ||
1737 | assert(link); | |
1738 | assert(netdev); | |
1739 | ||
1740 | r = link_get(link->manager, netdev->ifindex, &master); | |
1741 | if (r < 0) | |
1742 | return r; | |
1743 | ||
de7fef4b | 1744 | r = set_ensure_put(&master->slaves, NULL, link); |
38288f0b | 1745 | if (r <= 0) |
5f707e12 YW |
1746 | return r; |
1747 | ||
1748 | link_ref(link); | |
1749 | return 0; | |
1750 | } | |
1751 | ||
1752 | static void link_drop_from_master(Link *link, NetDev *netdev) { | |
1753 | Link *master; | |
1754 | ||
1755 | assert(link); | |
1756 | ||
1757 | if (!link->manager || !netdev) | |
1758 | return; | |
1759 | ||
1760 | if (link_get(link->manager, netdev->ifindex, &master) < 0) | |
1761 | return; | |
1762 | ||
1763 | link_unref(set_remove(master->slaves, link)); | |
1764 | } | |
1765 | ||
1766 | static void link_detach_from_manager(Link *link) { | |
1767 | if (!link || !link->manager) | |
1768 | return; | |
1769 | ||
1770 | link_unref(set_remove(link->manager->links_requesting_uuid, link)); | |
1771 | link_clean(link); | |
1772 | ||
1773 | /* The following must be called at last. */ | |
1774 | assert_se(hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)) == link); | |
1775 | link_unref(link); | |
1776 | } | |
1777 | ||
0d4ad91d AR |
1778 | void link_drop(Link *link) { |
1779 | if (!link || link->state == LINK_STATE_LINGER) | |
1780 | return; | |
1781 | ||
1782 | link_set_state(link, LINK_STATE_LINGER); | |
1783 | ||
1784 | link_free_carrier_maps(link); | |
1785 | ||
5f707e12 YW |
1786 | if (link->network) { |
1787 | link_drop_from_master(link, link->network->bridge); | |
1788 | link_drop_from_master(link, link->network->bond); | |
1789 | } | |
1790 | ||
6a7a4e4d | 1791 | log_link_debug(link, "Link removed"); |
0d4ad91d | 1792 | |
db2f8a2e | 1793 | (void) unlink(link->state_file); |
c4397d94 | 1794 | link_detach_from_manager(link); |
0d4ad91d AR |
1795 | } |
1796 | ||
3f265037 | 1797 | static int link_joined(Link *link) { |
f882c247 TG |
1798 | int r; |
1799 | ||
ef1ba606 | 1800 | assert(link); |
f5be5601 | 1801 | assert(link->network); |
dd3efc09 | 1802 | |
0d4ad91d AR |
1803 | if (!hashmap_isempty(link->bound_to_links)) { |
1804 | r = link_handle_bound_to_list(link); | |
1805 | if (r < 0) | |
1806 | return r; | |
1807 | } else if (!(link->flags & IFF_UP)) { | |
505f8da7 TG |
1808 | r = link_up(link); |
1809 | if (r < 0) { | |
1810 | link_enter_failed(link); | |
1811 | return r; | |
1812 | } | |
ef1ba606 | 1813 | } |
f882c247 | 1814 | |
9ed794a3 | 1815 | if (link->network->bridge) { |
e1853b00 | 1816 | r = link_set_bridge(link); |
6a7a4e4d LP |
1817 | if (r < 0) |
1818 | log_link_error_errno(link, r, "Could not set bridge message: %m"); | |
45e11abf YW |
1819 | |
1820 | r = link_append_to_master(link, link->network->bridge); | |
1821 | if (r < 0) | |
1822 | log_link_error_errno(link, r, "Failed to add to bridge master's slave list: %m"); | |
e1853b00 SS |
1823 | } |
1824 | ||
eb64b435 | 1825 | if (link->network->bond) { |
7fcee284 | 1826 | r = link_set_bond(link); |
eb64b435 SS |
1827 | if (r < 0) |
1828 | log_link_error_errno(link, r, "Could not set bond message: %m"); | |
959f65d3 | 1829 | |
45e11abf | 1830 | r = link_append_to_master(link, link->network->bond); |
959f65d3 YW |
1831 | if (r < 0) |
1832 | log_link_error_errno(link, r, "Failed to add to bond master's slave list: %m"); | |
eb64b435 SS |
1833 | } |
1834 | ||
34d7f2c9 YW |
1835 | r = link_set_bridge_vlan(link); |
1836 | if (r < 0) | |
1837 | log_link_error_errno(link, r, "Could not set bridge vlan: %m"); | |
13b498f9 | 1838 | |
c1835a42 RM |
1839 | /* Skip setting up addresses until it gets carrier, |
1840 | or it would try to set addresses twice, | |
1841 | which is bad for non-idempotent steps. */ | |
dad2d78e | 1842 | if (!link_has_carrier(link) && !link->network->configure_without_carrier) |
c1835a42 RM |
1843 | return 0; |
1844 | ||
b425c3ae | 1845 | link_set_state(link, LINK_STATE_CONFIGURING); |
682c65b0 | 1846 | return link_set_static_configs(link); |
02b59d57 TG |
1847 | } |
1848 | ||
302a796f | 1849 | static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
02b59d57 TG |
1850 | int r; |
1851 | ||
1746cf2a | 1852 | assert(link); |
ef1ba606 | 1853 | assert(link->network); |
34bf3c00 | 1854 | assert(link->enslaving > 0); |
02b59d57 | 1855 | |
313cefa1 | 1856 | link->enslaving--; |
52433f6b | 1857 | |
5da8149f | 1858 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
02b59d57 TG |
1859 | return 1; |
1860 | ||
1c4baffc | 1861 | r = sd_netlink_message_get_errno(m); |
856f962c | 1862 | if (r < 0 && r != -EEXIST) { |
5ecb131d | 1863 | log_link_message_warning_errno(link, m, r, "Could not join netdev"); |
ef1ba606 TG |
1864 | link_enter_failed(link); |
1865 | return 1; | |
4ff296b0 YW |
1866 | } |
1867 | ||
1868 | log_link_debug(link, "Joined netdev"); | |
02b59d57 | 1869 | |
34bf3c00 | 1870 | if (link->enslaving == 0) { |
4ff296b0 YW |
1871 | r = link_joined(link); |
1872 | if (r < 0) | |
1873 | link_enter_failed(link); | |
34bf3c00 | 1874 | } |
02b59d57 TG |
1875 | |
1876 | return 1; | |
1877 | } | |
1878 | ||
3f265037 | 1879 | static int link_enter_join_netdev(Link *link) { |
6a0a2f86 | 1880 | NetDev *netdev; |
02b59d57 TG |
1881 | int r; |
1882 | ||
1883 | assert(link); | |
1884 | assert(link->network); | |
bd08ce56 | 1885 | assert(link->state == LINK_STATE_INITIALIZED); |
02b59d57 | 1886 | |
289e6774 | 1887 | link_set_state(link, LINK_STATE_CONFIGURING); |
02b59d57 | 1888 | |
84de38c5 | 1889 | link_dirty(link); |
34bf3c00 | 1890 | link->enslaving = 0; |
02b59d57 | 1891 | |
d9c67ea1 | 1892 | if (link->network->bond) { |
cbff7170 TJ |
1893 | if (link->network->bond->state == NETDEV_STATE_READY && |
1894 | link->network->bond->ifindex == link->master_ifindex) | |
1895 | return link_joined(link); | |
1896 | ||
f2341e0a LP |
1897 | log_struct(LOG_DEBUG, |
1898 | LOG_LINK_INTERFACE(link), | |
1899 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 1900 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bond->ifname)); |
f2341e0a | 1901 | |
34bf3c00 YW |
1902 | link->enslaving++; |
1903 | ||
f2341e0a | 1904 | r = netdev_join(link->network->bond, link, netdev_join_handler); |
52433f6b | 1905 | if (r < 0) { |
f2341e0a LP |
1906 | log_struct_errno(LOG_WARNING, r, |
1907 | LOG_LINK_INTERFACE(link), | |
1908 | LOG_NETDEV_INTERFACE(link->network->bond), | |
a1230ff9 | 1909 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bond->ifname)); |
52433f6b TG |
1910 | link_enter_failed(link); |
1911 | return r; | |
1912 | } | |
0ad6148e MO |
1913 | } |
1914 | ||
d9c67ea1 | 1915 | if (link->network->bridge) { |
f2341e0a LP |
1916 | log_struct(LOG_DEBUG, |
1917 | LOG_LINK_INTERFACE(link), | |
1918 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 1919 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->bridge->ifname)); |
f2341e0a | 1920 | |
34bf3c00 YW |
1921 | link->enslaving++; |
1922 | ||
f2341e0a | 1923 | r = netdev_join(link->network->bridge, link, netdev_join_handler); |
0ad6148e | 1924 | if (r < 0) { |
f2341e0a LP |
1925 | log_struct_errno(LOG_WARNING, r, |
1926 | LOG_LINK_INTERFACE(link), | |
1927 | LOG_NETDEV_INTERFACE(link->network->bridge), | |
a1230ff9 | 1928 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->bridge->ifname)); |
0ad6148e MO |
1929 | link_enter_failed(link); |
1930 | return r; | |
1931 | } | |
52433f6b TG |
1932 | } |
1933 | ||
6cb955c6 AR |
1934 | if (link->network->vrf) { |
1935 | log_struct(LOG_DEBUG, | |
1936 | LOG_LINK_INTERFACE(link), | |
1937 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 ZJS |
1938 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", link->network->vrf->ifname)); |
1939 | ||
34bf3c00 YW |
1940 | link->enslaving++; |
1941 | ||
6cb955c6 AR |
1942 | r = netdev_join(link->network->vrf, link, netdev_join_handler); |
1943 | if (r < 0) { | |
1944 | log_struct_errno(LOG_WARNING, r, | |
1945 | LOG_LINK_INTERFACE(link), | |
1946 | LOG_NETDEV_INTERFACE(link->network->vrf), | |
a1230ff9 | 1947 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", link->network->vrf->ifname)); |
6cb955c6 AR |
1948 | link_enter_failed(link); |
1949 | return r; | |
1950 | } | |
6cb955c6 AR |
1951 | } |
1952 | ||
90e74a66 | 1953 | HASHMAP_FOREACH(netdev, link->network->stacked_netdevs) { |
7951dea2 | 1954 | |
2b6db913 YW |
1955 | if (netdev->ifindex > 0) |
1956 | /* Assume already enslaved. */ | |
a63e5daa | 1957 | continue; |
a63e5daa | 1958 | |
7033af49 YW |
1959 | if (netdev_get_create_type(netdev) != NETDEV_CREATE_STACKED) |
1960 | continue; | |
1961 | ||
f2341e0a LP |
1962 | log_struct(LOG_DEBUG, |
1963 | LOG_LINK_INTERFACE(link), | |
1964 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 1965 | LOG_LINK_MESSAGE(link, "Enslaving by '%s'", netdev->ifname)); |
f2341e0a | 1966 | |
34bf3c00 YW |
1967 | link->enslaving++; |
1968 | ||
f2341e0a | 1969 | r = netdev_join(netdev, link, netdev_join_handler); |
7951dea2 | 1970 | if (r < 0) { |
f2341e0a LP |
1971 | log_struct_errno(LOG_WARNING, r, |
1972 | LOG_LINK_INTERFACE(link), | |
1973 | LOG_NETDEV_INTERFACE(netdev), | |
a1230ff9 | 1974 | LOG_LINK_MESSAGE(link, "Could not join netdev '%s': %m", netdev->ifname)); |
326cb406 SS |
1975 | link_enter_failed(link); |
1976 | return r; | |
1977 | } | |
326cb406 SS |
1978 | } |
1979 | ||
34bf3c00 YW |
1980 | if (link->enslaving == 0) |
1981 | return link_joined(link); | |
1982 | ||
ef1ba606 TG |
1983 | return 0; |
1984 | } | |
1985 | ||
769d324c | 1986 | static int link_set_ipv4_forward(Link *link) { |
5a8bcb67 LP |
1987 | int r; |
1988 | ||
765afd5c | 1989 | if (!link_ipv4_forward_enabled(link)) |
15dee3f0 LP |
1990 | return 0; |
1991 | ||
765afd5c LP |
1992 | /* We propagate the forwarding flag from one interface to the |
1993 | * global setting one way. This means: as long as at least one | |
1994 | * interface was configured at any time that had IP forwarding | |
1995 | * enabled the setting will stay on for good. We do this | |
1996 | * primarily to keep IPv4 and IPv6 packet forwarding behaviour | |
1997 | * somewhat in sync (see below). */ | |
15dee3f0 | 1998 | |
62e021a9 | 1999 | r = sysctl_write_ip_property(AF_INET, NULL, "ip_forward", "1"); |
eb3da901 | 2000 | if (r < 0) |
765afd5c | 2001 | log_link_warning_errno(link, r, "Cannot turn on IPv4 packet forwarding, ignoring: %m"); |
43c6d5ab | 2002 | |
769d324c LP |
2003 | return 0; |
2004 | } | |
2005 | ||
2006 | static int link_set_ipv6_forward(Link *link) { | |
769d324c LP |
2007 | int r; |
2008 | ||
765afd5c | 2009 | if (!link_ipv6_forward_enabled(link)) |
8add5f79 NO |
2010 | return 0; |
2011 | ||
61233823 | 2012 | /* On Linux, the IPv6 stack does not know a per-interface |
765afd5c LP |
2013 | * packet forwarding setting: either packet forwarding is on |
2014 | * for all, or off for all. We hence don't bother with a | |
2015 | * per-interface setting, but simply propagate the interface | |
2016 | * flag, if it is set, to the global flag, one-way. Note that | |
2017 | * while IPv4 would allow a per-interface flag, we expose the | |
2018 | * same behaviour there and also propagate the setting from | |
2019 | * one to all, to keep things simple (see above). */ | |
15dee3f0 | 2020 | |
62e021a9 | 2021 | r = sysctl_write_ip_property(AF_INET6, "all", "forwarding", "1"); |
eb3da901 | 2022 | if (r < 0) |
765afd5c | 2023 | log_link_warning_errno(link, r, "Cannot configure IPv6 packet forwarding, ignoring: %m"); |
5a8bcb67 LP |
2024 | |
2025 | return 0; | |
2026 | } | |
2027 | ||
49092e22 | 2028 | static int link_set_ipv6_privacy_extensions(Link *link) { |
1f0d9695 | 2029 | IPv6PrivacyExtensions s; |
49092e22 SS |
2030 | int r; |
2031 | ||
1f0d9695 | 2032 | s = link_ipv6_privacy_extensions(link); |
66a6bd68 | 2033 | if (s < 0) |
49092e22 SS |
2034 | return 0; |
2035 | ||
62e021a9 | 2036 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "use_tempaddr", (int) link->network->ipv6_privacy_extensions); |
eb3da901 | 2037 | if (r < 0) |
49092e22 SS |
2038 | log_link_warning_errno(link, r, "Cannot configure IPv6 privacy extension for interface: %m"); |
2039 | ||
2040 | return 0; | |
2041 | } | |
2042 | ||
4f2e437a | 2043 | static int link_set_ipv6_accept_ra(Link *link) { |
4f2e437a SS |
2044 | int r; |
2045 | ||
2046 | /* Make this a NOP if IPv6 is not available */ | |
2047 | if (!socket_ipv6_is_supported()) | |
2048 | return 0; | |
2049 | ||
2050 | if (link->flags & IFF_LOOPBACK) | |
2051 | return 0; | |
2052 | ||
d68e2e59 LP |
2053 | if (!link->network) |
2054 | return 0; | |
2055 | ||
62e021a9 | 2056 | r = sysctl_write_ip_property(AF_INET6, link->ifname, "accept_ra", "0"); |
eb3da901 | 2057 | if (r < 0) |
fe307276 | 2058 | log_link_warning_errno(link, r, "Cannot disable kernel IPv6 accept_ra for interface: %m"); |
4f2e437a SS |
2059 | |
2060 | return 0; | |
2061 | } | |
2062 | ||
8749cbcd | 2063 | static int link_set_ipv6_dad_transmits(Link *link) { |
8749cbcd SS |
2064 | int r; |
2065 | ||
2066 | /* Make this a NOP if IPv6 is not available */ | |
2067 | if (!socket_ipv6_is_supported()) | |
2068 | return 0; | |
2069 | ||
2070 | if (link->flags & IFF_LOOPBACK) | |
2071 | return 0; | |
2072 | ||
d68e2e59 LP |
2073 | if (!link->network) |
2074 | return 0; | |
2075 | ||
8749cbcd SS |
2076 | if (link->network->ipv6_dad_transmits < 0) |
2077 | return 0; | |
2078 | ||
62e021a9 | 2079 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "dad_transmits", link->network->ipv6_dad_transmits); |
eb3da901 | 2080 | if (r < 0) |
8749cbcd | 2081 | log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); |
8749cbcd SS |
2082 | |
2083 | return 0; | |
2084 | } | |
2085 | ||
b69c3180 | 2086 | static int link_set_ipv6_hop_limit(Link *link) { |
b69c3180 SS |
2087 | int r; |
2088 | ||
2089 | /* Make this a NOP if IPv6 is not available */ | |
2090 | if (!socket_ipv6_is_supported()) | |
2091 | return 0; | |
2092 | ||
2093 | if (link->flags & IFF_LOOPBACK) | |
2094 | return 0; | |
2095 | ||
d68e2e59 LP |
2096 | if (!link->network) |
2097 | return 0; | |
2098 | ||
b69c3180 SS |
2099 | if (link->network->ipv6_hop_limit < 0) |
2100 | return 0; | |
2101 | ||
62e021a9 | 2102 | r = sysctl_write_ip_property_int(AF_INET6, link->ifname, "hop_limit", link->network->ipv6_hop_limit); |
eb3da901 | 2103 | if (r < 0) |
b69c3180 | 2104 | log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface: %m"); |
b69c3180 SS |
2105 | |
2106 | return 0; | |
2107 | } | |
2108 | ||
11102cba | 2109 | static int link_set_ipv6_mtu(Link *link) { |
11102cba SS |
2110 | int r; |
2111 | ||
2112 | /* Make this a NOP if IPv6 is not available */ | |
2113 | if (!socket_ipv6_is_supported()) | |
2114 | return 0; | |
2115 | ||
2116 | if (link->flags & IFF_LOOPBACK) | |
2117 | return 0; | |
2118 | ||
2119 | if (link->network->ipv6_mtu == 0) | |
2120 | return 0; | |
2121 | ||
d236718c DS |
2122 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes |
2123 | * on the interface. Bump up IPv6 MTU bytes to IPV6_MTU_MIN. */ | |
2124 | if (link->network->ipv6_mtu < IPV6_MIN_MTU) { | |
2125 | log_link_notice(link, "Bumping IPv6 MTU to "STRINGIFY(IPV6_MIN_MTU)" byte minimum required"); | |
2126 | link->network->ipv6_mtu = IPV6_MIN_MTU; | |
2127 | } | |
2128 | ||
62e021a9 | 2129 | r = sysctl_write_ip_property_uint32(AF_INET6, link->ifname, "mtu", link->network->ipv6_mtu); |
d236718c DS |
2130 | if (r < 0) { |
2131 | if (link->mtu < link->network->ipv6_mtu) | |
2132 | log_link_warning(link, "Cannot set IPv6 MTU %"PRIu32" higher than device MTU %"PRIu32, | |
2133 | link->network->ipv6_mtu, link->mtu); | |
2134 | else | |
2135 | log_link_warning_errno(link, r, "Cannot set IPv6 MTU for interface: %m"); | |
2136 | } | |
2137 | ||
2138 | link->ipv6_mtu_set = true; | |
11102cba SS |
2139 | |
2140 | return 0; | |
2141 | } | |
2142 | ||
94d76d07 YW |
2143 | static int link_set_ipv4_accept_local(Link *link) { |
2144 | int r; | |
2145 | ||
2146 | if (link->flags & IFF_LOOPBACK) | |
2147 | return 0; | |
2148 | ||
2149 | if (link->network->ipv4_accept_local < 0) | |
2150 | return 0; | |
2151 | ||
2152 | r = sysctl_write_ip_property_boolean(AF_INET, link->ifname, "accept_local", link->network->ipv4_accept_local); | |
2153 | if (r < 0) | |
2154 | log_link_warning_errno(link, r, "Cannot set IPv4 accept_local flag for interface: %m"); | |
2155 | ||
2156 | return 0; | |
2157 | } | |
2158 | ||
0917a271 DS |
2159 | static int link_enumerate_ipv6_tentative_addresses(Link *link) { |
2160 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL; | |
2161 | sd_netlink_message *addr; | |
2162 | int r; | |
2163 | ||
2164 | assert(link); | |
2165 | assert(link->manager); | |
2166 | assert(link->manager->rtnl); | |
2167 | ||
2168 | r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_GETADDR, 0, AF_INET6); | |
2169 | if (r < 0) | |
2170 | return r; | |
2171 | ||
2172 | r = sd_netlink_call(link->manager->rtnl, req, 0, &reply); | |
2173 | if (r < 0) | |
2174 | return r; | |
2175 | ||
2176 | for (addr = reply; addr; addr = sd_netlink_message_next(addr)) { | |
2177 | unsigned char flags; | |
2178 | int ifindex; | |
2179 | ||
2180 | r = sd_rtnl_message_addr_get_ifindex(addr, &ifindex); | |
2181 | if (r < 0) { | |
2182 | log_link_warning_errno(link, r, "rtnl: invalid ifindex, ignoring: %m"); | |
2183 | continue; | |
2184 | } else if (link->ifindex != ifindex) | |
2185 | continue; | |
2186 | ||
2187 | r = sd_rtnl_message_addr_get_flags(addr, &flags); | |
2188 | if (r < 0) { | |
2189 | log_link_warning_errno(link, r, "rtnl: received address message with invalid flags, ignoring: %m"); | |
2190 | continue; | |
2191 | } else if (!(flags & IFA_F_TENTATIVE)) | |
2192 | continue; | |
2193 | ||
2194 | log_link_debug(link, "Found tentative ipv6 link-local address"); | |
2195 | (void) manager_rtnl_process_address(link->manager->rtnl, addr, link->manager); | |
2196 | } | |
2197 | ||
2198 | return 0; | |
2199 | } | |
2200 | ||
5e5b137a | 2201 | static int link_drop_foreign_config(Link *link) { |
5e5b137a TG |
2202 | int r; |
2203 | ||
0917a271 DS |
2204 | /* The kernel doesn't notify us about tentative addresses; |
2205 | * so if ipv6ll is disabled, we need to enumerate them now so we can drop them below */ | |
2206 | if (!link_ipv6ll_enabled(link)) { | |
2207 | r = link_enumerate_ipv6_tentative_addresses(link); | |
2208 | if (r < 0) | |
2209 | return r; | |
2210 | } | |
2211 | ||
f8f2f880 YW |
2212 | r = link_drop_foreign_addresses(link); |
2213 | if (r < 0) | |
2214 | return r; | |
5e5b137a | 2215 | |
59048336 YW |
2216 | r = link_drop_foreign_neighbors(link); |
2217 | if (r < 0) | |
2218 | return r; | |
d1bdafd2 | 2219 | |
779804dd | 2220 | return link_drop_foreign_routes(link); |
5e5b137a TG |
2221 | } |
2222 | ||
3104883d | 2223 | static int link_drop_config(Link *link) { |
3104883d SS |
2224 | int r; |
2225 | ||
d7fbb9f5 YW |
2226 | r = link_drop_addresses(link); |
2227 | if (r < 0) | |
2228 | return r; | |
3104883d | 2229 | |
59048336 YW |
2230 | r = link_drop_neighbors(link); |
2231 | if (r < 0) | |
2232 | return r; | |
d1bdafd2 | 2233 | |
62f0ea5f YW |
2234 | r = link_drop_routes(link); |
2235 | if (r < 0) | |
2236 | return r; | |
3104883d | 2237 | |
c69305ff LP |
2238 | ndisc_flush(link); |
2239 | ||
3104883d SS |
2240 | return 0; |
2241 | } | |
2242 | ||
256c75fd | 2243 | int link_configure(Link *link) { |
4ecdcb07 YW |
2244 | int r; |
2245 | ||
ef1ba606 | 2246 | assert(link); |
b22d8a00 | 2247 | assert(link->network); |
bd08ce56 | 2248 | assert(link->state == LINK_STATE_INITIALIZED); |
a748b692 | 2249 | |
34658df2 | 2250 | r = link_configure_traffic_control(link); |
4ecdcb07 YW |
2251 | if (r < 0) |
2252 | return r; | |
2253 | ||
518cd6b5 SS |
2254 | r = link_configure_sr_iov(link); |
2255 | if (r < 0) | |
2256 | return r; | |
2257 | ||
500b96eb | 2258 | if (link->iftype == ARPHRD_CAN) |
93ea7750 | 2259 | return link_configure_can(link); |
92c918b0 | 2260 | |
482efedc SS |
2261 | /* If IPv6 configured that is static IPv6 address and IPv6LL autoconfiguration is enabled |
2262 | * for this interface, then enable IPv6 */ | |
57ad7607 | 2263 | (void) link_update_ipv6_sysctl(link); |
482efedc | 2264 | |
23d8b221 SS |
2265 | r = link_set_proxy_arp(link); |
2266 | if (r < 0) | |
2267 | return r; | |
2268 | ||
c16b5821 | 2269 | r = link_set_ipv6_proxy_ndp_addresses(link); |
a0e5c15d FK |
2270 | if (r < 0) |
2271 | return r; | |
2272 | ||
769d324c LP |
2273 | r = link_set_ipv4_forward(link); |
2274 | if (r < 0) | |
2275 | return r; | |
2276 | ||
2277 | r = link_set_ipv6_forward(link); | |
5a8bcb67 LP |
2278 | if (r < 0) |
2279 | return r; | |
2280 | ||
49092e22 SS |
2281 | r = link_set_ipv6_privacy_extensions(link); |
2282 | if (r < 0) | |
2283 | return r; | |
2284 | ||
4f2e437a SS |
2285 | r = link_set_ipv6_accept_ra(link); |
2286 | if (r < 0) | |
2287 | return r; | |
2288 | ||
8749cbcd SS |
2289 | r = link_set_ipv6_dad_transmits(link); |
2290 | if (r < 0) | |
2291 | return r; | |
b69c3180 SS |
2292 | |
2293 | r = link_set_ipv6_hop_limit(link); | |
2294 | if (r < 0) | |
2295 | return r; | |
8749cbcd | 2296 | |
94d76d07 YW |
2297 | r = link_set_ipv4_accept_local(link); |
2298 | if (r < 0) | |
2299 | return r; | |
2300 | ||
99d2baa2 SS |
2301 | r = link_set_flags(link); |
2302 | if (r < 0) | |
2303 | return r; | |
2304 | ||
89fe6535 SS |
2305 | r = link_set_group(link); |
2306 | if (r < 0) | |
2307 | return r; | |
2308 | ||
910feb78 | 2309 | if (link_ipv4ll_enabled(link, ADDRESS_FAMILY_IPV4 | ADDRESS_FAMILY_FALLBACK_IPV4)) { |
b22d8a00 | 2310 | r = ipv4ll_configure(link); |
eb34d4af TG |
2311 | if (r < 0) |
2312 | return r; | |
2313 | } | |
2314 | ||
78c958f8 | 2315 | if (link_dhcp4_enabled(link)) { |
64b21ece MV |
2316 | r = dhcp4_set_promote_secondaries(link); |
2317 | if (r < 0) | |
2318 | return r; | |
2319 | ||
3c9b8860 | 2320 | r = dhcp4_configure(link); |
eb34d4af TG |
2321 | if (r < 0) |
2322 | return r; | |
eb34d4af TG |
2323 | } |
2324 | ||
62379e88 TG |
2325 | if (link_dhcp6_enabled(link) || |
2326 | link_ipv6_accept_ra_enabled(link)) { | |
f5a8c43f TG |
2327 | r = dhcp6_configure(link); |
2328 | if (r < 0) | |
2329 | return r; | |
2330 | } | |
2331 | ||
2332 | if (link_ipv6_accept_ra_enabled(link)) { | |
de1e9928 | 2333 | r = ndisc_configure(link); |
4138fb2c PF |
2334 | if (r < 0) |
2335 | return r; | |
2336 | } | |
2337 | ||
086b8853 YW |
2338 | r = radv_configure(link); |
2339 | if (r < 0) | |
2340 | return r; | |
7465dd22 | 2341 | |
8e1ad1ea | 2342 | if (link_lldp_rx_enabled(link)) { |
7f853950 | 2343 | r = link_lldp_rx_configure(link); |
273eec24 LP |
2344 | if (r < 0) |
2345 | return r; | |
ce43e484 SS |
2346 | } |
2347 | ||
f6fcc1c2 | 2348 | r = link_configure_mtu(link); |
40288ece YW |
2349 | if (r < 0) |
2350 | return r; | |
44b598a1 | 2351 | |
9f6e82e6 YW |
2352 | r = link_configure_addrgen_mode(link); |
2353 | if (r < 0) | |
2354 | return r; | |
0e2fdb83 | 2355 | |
051e77ca SS |
2356 | r = link_configure_ipv4_dad(link); |
2357 | if (r < 0) | |
2358 | return r; | |
2359 | ||
3a390124 DS |
2360 | return link_configure_continue(link); |
2361 | } | |
2362 | ||
2363 | /* The configuration continues in this separate function, instead of | |
2364 | * including this in the above link_configure() function, for two | |
2365 | * reasons: | |
2366 | * 1) some devices reset the link when the mtu is set, which caused | |
2367 | * an infinite loop here in networkd; see: | |
2368 | * https://github.com/systemd/systemd/issues/6593 | |
2369 | * https://github.com/systemd/systemd/issues/9831 | |
2370 | * 2) if ipv6ll is disabled, then bringing the interface up must be | |
2371 | * delayed until after we get confirmation from the kernel that | |
2372 | * the addr_gen_mode parameter has been set (via netlink), see: | |
2373 | * https://github.com/systemd/systemd/issues/13882 | |
2374 | */ | |
2375 | static int link_configure_continue(Link *link) { | |
55dc8c4a YW |
2376 | int r; |
2377 | ||
2378 | assert(link); | |
2379 | assert(link->network); | |
bd08ce56 | 2380 | assert(link->state == LINK_STATE_INITIALIZED); |
55dc8c4a | 2381 | |
9524014e | 2382 | if (link->setting_mtu || link->setting_genmode) |
55dc8c4a YW |
2383 | return 0; |
2384 | ||
4c649652 DS |
2385 | /* Drop foreign config, but ignore loopback or critical devices. |
2386 | * We do not want to remove loopback address or addresses used for root NFS. */ | |
2387 | if (!(link->flags & IFF_LOOPBACK) && | |
2388 | link->network->keep_configuration != KEEP_CONFIGURATION_YES) { | |
2389 | r = link_drop_foreign_config(link); | |
2390 | if (r < 0) | |
2391 | return r; | |
2392 | } | |
2393 | ||
d236718c DS |
2394 | /* The kernel resets ipv6 mtu after changing device mtu; |
2395 | * we must set this here, after we've set device mtu */ | |
2396 | r = link_set_ipv6_mtu(link); | |
2397 | if (r < 0) | |
2398 | return r; | |
2399 | ||
dad2d78e | 2400 | if (link_has_carrier(link) || link->network->configure_without_carrier) { |
1e9be60b TG |
2401 | r = link_acquire_conf(link); |
2402 | if (r < 0) | |
2403 | return r; | |
cc544d5f | 2404 | } |
1e9be60b | 2405 | |
3f265037 | 2406 | return link_enter_join_netdev(link); |
505f8da7 TG |
2407 | } |
2408 | ||
572b21d9 | 2409 | static int link_reconfigure_internal(Link *link, sd_netlink_message *m, bool force) { |
ad932b15 YW |
2410 | Network *network; |
2411 | int r; | |
2412 | ||
572b21d9 YW |
2413 | if (m) { |
2414 | _cleanup_strv_free_ char **s = NULL; | |
2415 | ||
2416 | r = sd_netlink_message_get_errno(m); | |
2417 | if (r < 0) | |
2418 | return r; | |
2419 | ||
2420 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); | |
2421 | if (r < 0 && r != -ENODATA) | |
2422 | return r; | |
2423 | ||
2424 | strv_free_and_replace(link->alternative_names, s); | |
2425 | } | |
2426 | ||
c643bda5 YW |
2427 | r = network_get(link->manager, link->iftype, link->sd_device, |
2428 | link->ifname, link->alternative_names, link->driver, | |
2429 | &link->mac, &link->permanent_mac, | |
2430 | link->wlan_iftype, link->ssid, &link->bssid, &network); | |
ad932b15 YW |
2431 | if (r == -ENOENT) { |
2432 | link_enter_unmanaged(link); | |
2433 | return 0; | |
2434 | } else if (r == 0 && network->unmanaged) { | |
2435 | link_enter_unmanaged(link); | |
2436 | return 0; | |
2437 | } else if (r < 0) | |
2438 | return r; | |
2439 | ||
99b8517c | 2440 | if (link->network == network && !force) |
ad932b15 YW |
2441 | return 0; |
2442 | ||
2443 | log_link_info(link, "Re-configuring with %s", network->filename); | |
2444 | ||
2445 | /* Dropping old .network file */ | |
2446 | r = link_stop_clients(link, false); | |
572b21d9 | 2447 | if (r < 0) |
ad932b15 | 2448 | return r; |
ad932b15 | 2449 | |
5ae0fb7f | 2450 | if (link->dhcp_server) |
ad932b15 YW |
2451 | (void) sd_dhcp_server_stop(link->dhcp_server); |
2452 | ||
2453 | r = link_drop_config(link); | |
2454 | if (r < 0) | |
2455 | return r; | |
2456 | ||
2c7b826d | 2457 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
ad932b15 YW |
2458 | log_link_debug(link, "State is %s, dropping config", link_state_to_string(link->state)); |
2459 | r = link_drop_foreign_config(link); | |
2460 | if (r < 0) | |
2461 | return r; | |
2462 | } | |
2463 | ||
2464 | link_free_carrier_maps(link); | |
2465 | link_free_engines(link); | |
2466 | link->network = network_unref(link->network); | |
2467 | ||
2468 | /* Then, apply new .network file */ | |
2469 | r = network_apply(network, link); | |
2470 | if (r < 0) | |
2471 | return r; | |
2472 | ||
2473 | r = link_new_carrier_maps(link); | |
2474 | if (r < 0) | |
2475 | return r; | |
2476 | ||
2477 | link_set_state(link, LINK_STATE_INITIALIZED); | |
8ae7b8a1 | 2478 | link_dirty(link); |
ad932b15 YW |
2479 | |
2480 | /* link_configure_duid() returns 0 if it requests product UUID. In that case, | |
2481 | * link_configure() is called later asynchronously. */ | |
2482 | r = link_configure_duid(link); | |
2483 | if (r <= 0) | |
2484 | return r; | |
2485 | ||
2486 | r = link_configure(link); | |
2487 | if (r < 0) | |
2488 | return r; | |
2489 | ||
2490 | return 0; | |
2491 | } | |
2492 | ||
572b21d9 YW |
2493 | static int link_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
2494 | int r; | |
2495 | ||
2496 | r = link_reconfigure_internal(link, m, false); | |
2497 | if (r < 0) | |
2498 | link_enter_failed(link); | |
2499 | ||
2500 | return 1; | |
2501 | } | |
2502 | ||
2503 | static int link_force_reconfigure_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
2504 | int r; | |
2505 | ||
2506 | r = link_reconfigure_internal(link, m, true); | |
2507 | if (r < 0) | |
2508 | link_enter_failed(link); | |
2509 | ||
2510 | return 1; | |
2511 | } | |
2512 | ||
2513 | int link_reconfigure(Link *link, bool force) { | |
2514 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
2515 | int r; | |
2516 | ||
2c0d7ed3 YW |
2517 | if (IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_LINGER)) |
2518 | return 0; | |
2519 | ||
572b21d9 YW |
2520 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2521 | link->ifindex); | |
2522 | if (r < 0) | |
2523 | return r; | |
2524 | ||
2525 | r = netlink_call_async(link->manager->rtnl, NULL, req, | |
2526 | force ? link_force_reconfigure_handler : link_reconfigure_handler, | |
2527 | link_netlink_destroy_callback, link); | |
2528 | if (r < 0) | |
2529 | return r; | |
2530 | ||
2531 | link_ref(link); | |
2532 | ||
2533 | return 0; | |
2534 | } | |
2535 | ||
e6bf7774 | 2536 | static int link_initialized_and_synced(Link *link) { |
505f8da7 | 2537 | Network *network; |
505f8da7 TG |
2538 | int r; |
2539 | ||
2540 | assert(link); | |
2541 | assert(link->ifname); | |
2542 | assert(link->manager); | |
2543 | ||
bd08ce56 YW |
2544 | /* We may get called either from the asynchronous netlink callback, |
2545 | * or directly for link_add() if running in a container. See link_add(). */ | |
2546 | if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) | |
4232cf04 | 2547 | return 0; |
505f8da7 | 2548 | |
6a7a4e4d | 2549 | log_link_debug(link, "Link state is up-to-date"); |
bd08ce56 | 2550 | link_set_state(link, LINK_STATE_INITIALIZED); |
505f8da7 | 2551 | |
0d4ad91d AR |
2552 | r = link_new_bound_by_list(link); |
2553 | if (r < 0) | |
2554 | return r; | |
2555 | ||
2556 | r = link_handle_bound_by_list(link); | |
2557 | if (r < 0) | |
2558 | return r; | |
2559 | ||
c4a03a56 | 2560 | if (!link->network) { |
0894cfe4 | 2561 | r = wifi_get_info(link); |
8d968fdd YW |
2562 | if (r < 0) |
2563 | return r; | |
2564 | ||
c643bda5 YW |
2565 | r = network_get(link->manager, link->iftype, link->sd_device, |
2566 | link->ifname, link->alternative_names, link->driver, | |
2567 | &link->mac, &link->permanent_mac, | |
2568 | link->wlan_iftype, link->ssid, &link->bssid, &network); | |
c4a03a56 TG |
2569 | if (r == -ENOENT) { |
2570 | link_enter_unmanaged(link); | |
4232cf04 | 2571 | return 0; |
a09dc546 DM |
2572 | } else if (r == 0 && network->unmanaged) { |
2573 | link_enter_unmanaged(link); | |
2574 | return 0; | |
c4a03a56 TG |
2575 | } else if (r < 0) |
2576 | return r; | |
505f8da7 | 2577 | |
c4a03a56 TG |
2578 | if (link->flags & IFF_LOOPBACK) { |
2579 | if (network->link_local != ADDRESS_FAMILY_NO) | |
2580 | log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); | |
78c958f8 | 2581 | |
c4a03a56 TG |
2582 | if (network->dhcp != ADDRESS_FAMILY_NO) |
2583 | log_link_debug(link, "Ignoring DHCP clients for loopback link"); | |
78c958f8 | 2584 | |
c4a03a56 TG |
2585 | if (network->dhcp_server) |
2586 | log_link_debug(link, "Ignoring DHCP server for loopback link"); | |
2587 | } | |
bd2efe92 | 2588 | |
7d342c03 | 2589 | r = network_apply(network, link); |
c4a03a56 TG |
2590 | if (r < 0) |
2591 | return r; | |
2592 | } | |
505f8da7 | 2593 | |
0d4ad91d AR |
2594 | r = link_new_bound_to_list(link); |
2595 | if (r < 0) | |
2596 | return r; | |
2597 | ||
27dfc982 YW |
2598 | /* link_configure_duid() returns 0 if it requests product UUID. In that case, |
2599 | * link_configure() is called later asynchronously. */ | |
2600 | r = link_configure_duid(link); | |
2601 | if (r <= 0) | |
2602 | return r; | |
2603 | ||
a748b692 TG |
2604 | r = link_configure(link); |
2605 | if (r < 0) | |
2606 | return r; | |
2607 | ||
4232cf04 | 2608 | return 0; |
505f8da7 TG |
2609 | } |
2610 | ||
302a796f | 2611 | static int link_initialized_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
572b21d9 | 2612 | _cleanup_strv_free_ char **s = NULL; |
4ff296b0 YW |
2613 | int r; |
2614 | ||
572b21d9 YW |
2615 | r = sd_netlink_message_get_errno(m); |
2616 | if (r < 0) { | |
40681e5c | 2617 | log_link_warning_errno(link, r, "Failed to wait for the interface to be initialized: %m"); |
572b21d9 YW |
2618 | link_enter_failed(link); |
2619 | return 0; | |
2620 | } | |
2621 | ||
2622 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); | |
2623 | if (r < 0 && r != -ENODATA) { | |
2624 | link_enter_failed(link); | |
2625 | return 0; | |
2626 | } | |
2627 | ||
2628 | strv_free_and_replace(link->alternative_names, s); | |
2629 | ||
4ff296b0 YW |
2630 | r = link_initialized_and_synced(link); |
2631 | if (r < 0) | |
2632 | link_enter_failed(link); | |
e6bf7774 YW |
2633 | return 1; |
2634 | } | |
2635 | ||
51517f9e | 2636 | int link_initialized(Link *link, sd_device *device) { |
4afd3348 | 2637 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
4f561e8e TG |
2638 | int r; |
2639 | ||
2640 | assert(link); | |
2641 | assert(link->manager); | |
2642 | assert(link->manager->rtnl); | |
2643 | assert(device); | |
2644 | ||
8434fd5c | 2645 | if (link->state != LINK_STATE_PENDING) |
4f561e8e TG |
2646 | return 0; |
2647 | ||
51517f9e | 2648 | if (link->sd_device) |
679b3605 TG |
2649 | return 0; |
2650 | ||
79008bdd | 2651 | log_link_debug(link, "udev initialized link"); |
bd08ce56 | 2652 | link_set_state(link, LINK_STATE_INITIALIZED); |
4f561e8e | 2653 | |
51517f9e | 2654 | link->sd_device = sd_device_ref(device); |
4f561e8e | 2655 | |
3c9b8860 TG |
2656 | /* udev has initialized the link, but we don't know if we have yet |
2657 | * processed the NEWLINK messages with the latest state. Do a GETLINK, | |
2658 | * when it returns we know that the pending NEWLINKs have already been | |
2659 | * processed and that we are up-to-date */ | |
4f561e8e | 2660 | |
3c9b8860 TG |
2661 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_GETLINK, |
2662 | link->ifindex); | |
4f561e8e TG |
2663 | if (r < 0) |
2664 | return r; | |
2665 | ||
302a796f YW |
2666 | r = netlink_call_async(link->manager->rtnl, NULL, req, link_initialized_handler, |
2667 | link_netlink_destroy_callback, link); | |
4f561e8e TG |
2668 | if (r < 0) |
2669 | return r; | |
2670 | ||
5da8149f TG |
2671 | link_ref(link); |
2672 | ||
4f561e8e TG |
2673 | return 0; |
2674 | } | |
2675 | ||
c4a03a56 | 2676 | static int link_load(Link *link) { |
0bc70f1d TG |
2677 | _cleanup_free_ char *network_file = NULL, |
2678 | *addresses = NULL, | |
f703cc2c | 2679 | *routes = NULL, |
0bc70f1d TG |
2680 | *dhcp4_address = NULL, |
2681 | *ipv4ll_address = NULL; | |
c4a03a56 TG |
2682 | int r; |
2683 | ||
2684 | assert(link); | |
2685 | ||
aa8fbc74 | 2686 | r = parse_env_file(NULL, link->state_file, |
c4a03a56 TG |
2687 | "NETWORK_FILE", &network_file, |
2688 | "ADDRESSES", &addresses, | |
f703cc2c | 2689 | "ROUTES", &routes, |
0bc70f1d | 2690 | "DHCP4_ADDRESS", &dhcp4_address, |
13df9c39 | 2691 | "IPV4LL_ADDRESS", &ipv4ll_address); |
c4a03a56 TG |
2692 | if (r < 0 && r != -ENOENT) |
2693 | return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); | |
2694 | ||
2695 | if (network_file) { | |
2696 | Network *network; | |
2697 | char *suffix; | |
2698 | ||
2699 | /* drop suffix */ | |
2700 | suffix = strrchr(network_file, '.'); | |
2701 | if (!suffix) { | |
2702 | log_link_debug(link, "Failed to get network name from %s", network_file); | |
2703 | goto network_file_fail; | |
2704 | } | |
2705 | *suffix = '\0'; | |
2706 | ||
2707 | r = network_get_by_name(link->manager, basename(network_file), &network); | |
2708 | if (r < 0) { | |
2709 | log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); | |
2710 | goto network_file_fail; | |
2711 | } | |
2712 | ||
7d342c03 | 2713 | r = network_apply(network, link); |
c4a03a56 TG |
2714 | if (r < 0) |
2715 | return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); | |
2716 | } | |
2717 | ||
2718 | network_file_fail: | |
2719 | ||
da4d3a61 YW |
2720 | r = link_deserialize_addresses(link, addresses); |
2721 | if (r < 0) | |
2722 | log_link_warning_errno(link, r, "Failed to load addresses from %s, ignoring: %m", link->state_file); | |
74544b4e | 2723 | |
731ff05b YW |
2724 | r = link_deserialize_routes(link, routes); |
2725 | if (r < 0) | |
2726 | log_link_warning_errno(link, r, "Failed to load routes from %s, ignoring: %m", link->state_file); | |
f703cc2c | 2727 | |
571eeba9 YW |
2728 | r = link_deserialize_dhcp4(link, dhcp4_address); |
2729 | if (r < 0) | |
2730 | log_link_warning_errno(link, r, "Failed to load DHCPv4 address from %s, ignoring: %m", link->state_file); | |
0bc70f1d | 2731 | |
daad60d1 YW |
2732 | r = link_deserialize_ipv4ll(link, ipv4ll_address); |
2733 | if (r < 0) | |
2734 | log_link_warning_errno(link, r, "Failed to load IPv4LL address from %s, ignoring: %m", link->state_file); | |
0bc70f1d | 2735 | |
c4a03a56 TG |
2736 | return 0; |
2737 | } | |
2738 | ||
1c4baffc | 2739 | int link_add(Manager *m, sd_netlink_message *message, Link **ret) { |
51517f9e | 2740 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; |
505f8da7 | 2741 | char ifindex_str[2 + DECIMAL_STR_MAX(int)]; |
51517f9e | 2742 | Link *link; |
5a937ea2 | 2743 | int r; |
505f8da7 TG |
2744 | |
2745 | assert(m); | |
fbbeb65a | 2746 | assert(m->rtnl); |
505f8da7 TG |
2747 | assert(message); |
2748 | assert(ret); | |
2749 | ||
2750 | r = link_new(m, message, ret); | |
2751 | if (r < 0) | |
2752 | return r; | |
2753 | ||
2754 | link = *ret; | |
2755 | ||
6a7a4e4d | 2756 | log_link_debug(link, "Link %d added", link->ifindex); |
505f8da7 | 2757 | |
c4a03a56 TG |
2758 | r = link_load(link); |
2759 | if (r < 0) | |
2760 | return r; | |
2761 | ||
bf331d87 YW |
2762 | if (path_is_read_only_fs("/sys") <= 0) { |
2763 | /* udev should be around */ | |
ae06ab10 | 2764 | sprintf(ifindex_str, "n%d", link->ifindex); |
51517f9e YW |
2765 | r = sd_device_new_from_device_id(&device, ifindex_str); |
2766 | if (r < 0) { | |
4d59e14f YW |
2767 | log_link_warning_errno(link, r, "Could not find device, waiting for device initialization: %m"); |
2768 | return 0; | |
5c416fc4 | 2769 | } |
505f8da7 | 2770 | |
5a937ea2 | 2771 | r = sd_device_get_is_initialized(device); |
51517f9e | 2772 | if (r < 0) { |
bf331d87 | 2773 | log_link_warning_errno(link, r, "Could not determine whether the device is initialized: %m"); |
51517f9e YW |
2774 | goto failed; |
2775 | } | |
5a937ea2 | 2776 | if (r == 0) { |
505f8da7 | 2777 | /* not yet ready */ |
79008bdd | 2778 | log_link_debug(link, "link pending udev initialization..."); |
505f8da7 | 2779 | return 0; |
3c4cb064 | 2780 | } |
505f8da7 | 2781 | |
299ad32d YW |
2782 | r = device_is_renaming(device); |
2783 | if (r < 0) { | |
bf331d87 | 2784 | log_link_warning_errno(link, r, "Failed to determine the device is being renamed: %m"); |
299ad32d YW |
2785 | goto failed; |
2786 | } | |
2787 | if (r > 0) { | |
bf331d87 | 2788 | log_link_debug(link, "Interface is being renamed, pending initialization."); |
299ad32d YW |
2789 | return 0; |
2790 | } | |
2791 | ||
4f561e8e TG |
2792 | r = link_initialized(link, device); |
2793 | if (r < 0) | |
5c416fc4 | 2794 | goto failed; |
4f561e8e | 2795 | } else { |
e6bf7774 | 2796 | r = link_initialized_and_synced(link); |
4f561e8e | 2797 | if (r < 0) |
5c416fc4 | 2798 | goto failed; |
4f561e8e | 2799 | } |
505f8da7 | 2800 | |
a748b692 | 2801 | return 0; |
5c416fc4 TG |
2802 | failed: |
2803 | link_enter_failed(link); | |
2804 | return r; | |
a748b692 TG |
2805 | } |
2806 | ||
c601ebf7 | 2807 | int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { |
e7ab854c TG |
2808 | int r; |
2809 | ||
2810 | assert(link); | |
2811 | ||
2812 | log_link_info(link, "Gained IPv6LL"); | |
2813 | ||
c601ebf7 | 2814 | link->ipv6ll_address = *address; |
e7ab854c TG |
2815 | link_check_ready(link); |
2816 | ||
b9ea3d2e | 2817 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
e7ab854c TG |
2818 | r = link_acquire_ipv6_conf(link); |
2819 | if (r < 0) { | |
2820 | link_enter_failed(link); | |
2821 | return r; | |
2822 | } | |
2823 | } | |
2824 | ||
2825 | return 0; | |
2826 | } | |
2827 | ||
9c0a72f9 TG |
2828 | static int link_carrier_gained(Link *link) { |
2829 | int r; | |
2830 | ||
2831 | assert(link); | |
2832 | ||
0894cfe4 | 2833 | r = wifi_get_info(link); |
8d968fdd YW |
2834 | if (r < 0) |
2835 | return r; | |
2836 | if (r > 0) { | |
572b21d9 YW |
2837 | r = link_reconfigure_internal(link, NULL, false); |
2838 | if (r < 0) { | |
2839 | link_enter_failed(link); | |
8d968fdd | 2840 | return r; |
572b21d9 | 2841 | } |
8d968fdd YW |
2842 | } |
2843 | ||
b9ea3d2e | 2844 | if (IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) { |
9c0a72f9 TG |
2845 | r = link_acquire_conf(link); |
2846 | if (r < 0) { | |
2847 | link_enter_failed(link); | |
2848 | return r; | |
2849 | } | |
6fc25497 | 2850 | |
b425c3ae | 2851 | link_set_state(link, LINK_STATE_CONFIGURING); |
682c65b0 | 2852 | r = link_set_static_configs(link); |
6fc25497 SS |
2853 | if (r < 0) |
2854 | return r; | |
9c0a72f9 TG |
2855 | } |
2856 | ||
0d4ad91d AR |
2857 | r = link_handle_bound_by_list(link); |
2858 | if (r < 0) | |
2859 | return r; | |
2860 | ||
1f241589 YW |
2861 | if (!link->bridge_mdb_configured) { |
2862 | r = link_set_bridge_mdb(link); | |
2863 | if (r < 0) | |
2864 | return r; | |
2865 | } | |
2866 | ||
2867 | if (streq_ptr(link->kind, "bridge")) { | |
2868 | Link *slave; | |
2869 | ||
2870 | SET_FOREACH(slave, link->slaves) { | |
2871 | if (slave->bridge_mdb_configured) | |
2872 | continue; | |
2873 | ||
2874 | r = link_set_bridge_mdb(slave); | |
2875 | if (r < 0) | |
2876 | link_enter_failed(slave); | |
2877 | } | |
2878 | } | |
3db468ea | 2879 | |
9c0a72f9 TG |
2880 | return 0; |
2881 | } | |
2882 | ||
2883 | static int link_carrier_lost(Link *link) { | |
2884 | int r; | |
2885 | ||
2886 | assert(link); | |
2887 | ||
25e992ba | 2888 | if (link->network && link->network->ignore_carrier_loss) |
93b4dab5 SS |
2889 | return 0; |
2890 | ||
fbdb6605 | 2891 | /* Some devices reset itself while setting the MTU. This causes the DHCP client fall into a loop. |
55dc8c4a YW |
2892 | * setting_mtu keep track whether the device got reset because of setting MTU and does not drop the |
2893 | * configuration and stop the clients as well. */ | |
97e7fb39 SS |
2894 | if (link->setting_mtu) |
2895 | return 0; | |
2896 | ||
95355a28 | 2897 | r = link_stop_clients(link, false); |
9c0a72f9 TG |
2898 | if (r < 0) { |
2899 | link_enter_failed(link); | |
2900 | return r; | |
2901 | } | |
2902 | ||
5ae0fb7f | 2903 | if (link->dhcp_server) |
28464ae0 | 2904 | (void) sd_dhcp_server_stop(link->dhcp_server); |
45a9eac9 | 2905 | |
3104883d SS |
2906 | r = link_drop_config(link); |
2907 | if (r < 0) | |
2908 | return r; | |
2909 | ||
2c7b826d | 2910 | if (!IN_SET(link->state, LINK_STATE_UNMANAGED, LINK_STATE_PENDING, LINK_STATE_INITIALIZED)) { |
f258e948 | 2911 | log_link_debug(link, "State is %s, dropping config", link_state_to_string(link->state)); |
c436d553 MM |
2912 | r = link_drop_foreign_config(link); |
2913 | if (r < 0) | |
2914 | return r; | |
2915 | } | |
3104883d | 2916 | |
0d4ad91d AR |
2917 | r = link_handle_bound_by_list(link); |
2918 | if (r < 0) | |
2919 | return r; | |
2920 | ||
9c0a72f9 TG |
2921 | return 0; |
2922 | } | |
2923 | ||
2924 | int link_carrier_reset(Link *link) { | |
2925 | int r; | |
2926 | ||
2927 | assert(link); | |
2928 | ||
2929 | if (link_has_carrier(link)) { | |
2930 | r = link_carrier_lost(link); | |
2931 | if (r < 0) | |
2932 | return r; | |
2933 | ||
2934 | r = link_carrier_gained(link); | |
2935 | if (r < 0) | |
2936 | return r; | |
2937 | ||
6a7a4e4d | 2938 | log_link_info(link, "Reset carrier"); |
9c0a72f9 TG |
2939 | } |
2940 | ||
2941 | return 0; | |
2942 | } | |
2943 | ||
d236718c DS |
2944 | /* This is called every time an interface admin state changes to up; |
2945 | * specifically, when IFF_UP flag changes from unset to set */ | |
2946 | static int link_admin_state_up(Link *link) { | |
2947 | int r; | |
2948 | ||
2949 | /* We set the ipv6 mtu after the device mtu, but the kernel resets | |
2950 | * ipv6 mtu on NETDEV_UP, so we need to reset it. The check for | |
2951 | * ipv6_mtu_set prevents this from trying to set it too early before | |
2952 | * the link->network has been setup; we only need to reset it | |
2953 | * here if we've already set it during normal initialization. */ | |
2954 | if (link->ipv6_mtu_set) { | |
2955 | r = link_set_ipv6_mtu(link); | |
2956 | if (r < 0) | |
2957 | return r; | |
2958 | } | |
2959 | ||
2960 | return 0; | |
2961 | } | |
2962 | ||
1c4baffc | 2963 | int link_update(Link *link, sd_netlink_message *m) { |
572b21d9 | 2964 | _cleanup_strv_free_ char **s = NULL; |
c49b33ac | 2965 | struct ether_addr mac; |
ca4e095a | 2966 | const char *ifname; |
afe7fd56 | 2967 | uint32_t mtu; |
d236718c | 2968 | bool had_carrier, carrier_gained, carrier_lost, link_was_admin_up; |
bb262ef0 | 2969 | int old_master, r; |
22936833 | 2970 | |
dd3efc09 | 2971 | assert(link); |
b8941f74 | 2972 | assert(link->ifname); |
22936833 TG |
2973 | assert(m); |
2974 | ||
7619683b | 2975 | if (link->state == LINK_STATE_LINGER) { |
5238e957 | 2976 | log_link_info(link, "Link re-added"); |
289e6774 | 2977 | link_set_state(link, LINK_STATE_CONFIGURING); |
0d4ad91d AR |
2978 | |
2979 | r = link_new_carrier_maps(link); | |
2980 | if (r < 0) | |
2981 | return r; | |
7619683b TG |
2982 | } |
2983 | ||
1c4baffc | 2984 | r = sd_netlink_message_read_string(m, IFLA_IFNAME, &ifname); |
b8941f74 | 2985 | if (r >= 0 && !streq(ifname, link->ifname)) { |
30de2b89 | 2986 | Manager *manager = link->manager; |
b8941f74 | 2987 | |
30de2b89 | 2988 | log_link_info(link, "Interface name change detected, %s has been renamed to %s.", link->ifname, ifname); |
0d4ad91d | 2989 | |
30de2b89 YW |
2990 | link_drop(link); |
2991 | r = link_add(manager, m, &link); | |
2992 | if (r < 0) | |
2993 | return r; | |
b8941f74 TG |
2994 | } |
2995 | ||
572b21d9 YW |
2996 | r = sd_netlink_message_read_strv(m, IFLA_PROP_LIST, IFLA_ALT_IFNAME, &s); |
2997 | if (r >= 0) | |
2998 | strv_free_and_replace(link->alternative_names, s); | |
2999 | ||
1c4baffc | 3000 | r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu); |
afe7fd56 TG |
3001 | if (r >= 0 && mtu > 0) { |
3002 | link->mtu = mtu; | |
4e964aa0 | 3003 | if (link->original_mtu == 0) { |
afe7fd56 | 3004 | link->original_mtu = mtu; |
6a7a4e4d | 3005 | log_link_debug(link, "Saved original MTU: %" PRIu32, link->original_mtu); |
afe7fd56 TG |
3006 | } |
3007 | ||
3008 | if (link->dhcp_client) { | |
3c9b8860 TG |
3009 | r = sd_dhcp_client_set_mtu(link->dhcp_client, |
3010 | link->mtu); | |
fc95c359 YW |
3011 | if (r < 0) |
3012 | return log_link_warning_errno(link, r, "Could not update MTU in DHCP client: %m"); | |
afe7fd56 | 3013 | } |
7465dd22 PF |
3014 | |
3015 | if (link->radv) { | |
3016 | r = sd_radv_set_mtu(link->radv, link->mtu); | |
3017 | if (r < 0) | |
3018 | return log_link_warning_errno(link, r, "Could not set MTU for Router Advertisement: %m"); | |
3019 | } | |
9842de0d | 3020 | } |
69629de9 | 3021 | |
e9189a1f TG |
3022 | /* The kernel may broadcast NEWLINK messages without the MAC address |
3023 | set, simply ignore them. */ | |
1c4baffc | 3024 | r = sd_netlink_message_read_ether_addr(m, IFLA_ADDRESS, &mac); |
807667f7 YW |
3025 | if (r >= 0 && memcmp(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN) != 0) { |
3026 | ||
3027 | memcpy(link->mac.ether_addr_octet, mac.ether_addr_octet, ETH_ALEN); | |
3028 | ||
3029 | log_link_debug(link, "Gained new MAC address: " | |
3030 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", | |
3031 | mac.ether_addr_octet[0], | |
3032 | mac.ether_addr_octet[1], | |
3033 | mac.ether_addr_octet[2], | |
3034 | mac.ether_addr_octet[3], | |
3035 | mac.ether_addr_octet[4], | |
3036 | mac.ether_addr_octet[5]); | |
3037 | ||
a3adb4a6 YW |
3038 | r = ipv4ll_update_mac(link); |
3039 | if (r < 0) | |
3040 | return log_link_warning_errno(link, r, "Could not update MAC address in IPv4LL client: %m"); | |
807667f7 YW |
3041 | |
3042 | if (link->dhcp_client) { | |
3043 | r = sd_dhcp_client_set_mac(link->dhcp_client, | |
3044 | (const uint8_t *) &link->mac, | |
3045 | sizeof (link->mac), | |
3046 | ARPHRD_ETHER); | |
3047 | if (r < 0) | |
3048 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCP client: %m"); | |
3049 | ||
3050 | r = dhcp4_set_client_identifier(link); | |
3051 | if (r < 0) | |
3052 | return log_link_warning_errno(link, r, "Could not set DHCP client identifier: %m"); | |
3053 | } | |
413708d1 | 3054 | |
807667f7 YW |
3055 | if (link->dhcp6_client) { |
3056 | const DUID* duid = link_get_duid(link); | |
3057 | bool restart = sd_dhcp6_client_is_running(link->dhcp6_client) > 0; | |
3058 | ||
3059 | if (restart) { | |
3060 | r = sd_dhcp6_client_stop(link->dhcp6_client); | |
fff1f40c | 3061 | if (r < 0) |
807667f7 | 3062 | return log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); |
c49b33ac | 3063 | } |
4138fb2c | 3064 | |
807667f7 YW |
3065 | r = sd_dhcp6_client_set_mac(link->dhcp6_client, |
3066 | (const uint8_t *) &link->mac, | |
3067 | sizeof (link->mac), | |
3068 | ARPHRD_ETHER); | |
3069 | if (r < 0) | |
3070 | return log_link_warning_errno(link, r, "Could not update MAC address in DHCPv6 client: %m"); | |
8341a5c3 | 3071 | |
807667f7 YW |
3072 | if (link->network->iaid_set) { |
3073 | r = sd_dhcp6_client_set_iaid(link->dhcp6_client, link->network->iaid); | |
6a7a4e4d | 3074 | if (r < 0) |
807667f7 YW |
3075 | return log_link_warning_errno(link, r, "Could not update DHCPv6 IAID: %m"); |
3076 | } | |
3077 | ||
3078 | r = sd_dhcp6_client_set_duid(link->dhcp6_client, | |
3079 | duid->type, | |
3080 | duid->raw_data_len > 0 ? duid->raw_data : NULL, | |
3081 | duid->raw_data_len); | |
3082 | if (r < 0) | |
3083 | return log_link_warning_errno(link, r, "Could not update DHCPv6 DUID: %m"); | |
3084 | ||
3085 | if (restart) { | |
3086 | r = sd_dhcp6_client_start(link->dhcp6_client); | |
413708d1 | 3087 | if (r < 0) |
807667f7 | 3088 | return log_link_warning_errno(link, r, "Could not restart DHCPv6 client: %m"); |
4138fb2c | 3089 | } |
807667f7 | 3090 | } |
7465dd22 | 3091 | |
807667f7 YW |
3092 | if (link->radv) { |
3093 | bool restart = sd_radv_is_running(link->radv); | |
3094 | ||
3095 | if (restart) { | |
3096 | r = sd_radv_stop(link->radv); | |
7465dd22 | 3097 | if (r < 0) |
807667f7 | 3098 | return log_link_warning_errno(link, r, "Could not stop Router Advertisement: %m"); |
7465dd22 | 3099 | } |
420d2058 | 3100 | |
807667f7 YW |
3101 | r = sd_radv_set_mac(link->radv, &link->mac); |
3102 | if (r < 0) | |
3103 | return log_link_warning_errno(link, r, "Could not update MAC for Router Advertisement: %m"); | |
3104 | ||
3105 | if (restart) { | |
3106 | r = sd_radv_start(link->radv); | |
420d2058 | 3107 | if (r < 0) |
807667f7 | 3108 | return log_link_warning_errno(link, r, "Could not restart Router Advertisement: %m"); |
420d2058 | 3109 | } |
c49b33ac | 3110 | } |
807667f7 YW |
3111 | |
3112 | if (link->ndisc) { | |
3113 | r = sd_ndisc_set_mac(link->ndisc, &link->mac); | |
3114 | if (r < 0) | |
3115 | return log_link_warning_errno(link, r, "Could not update MAC for NDisc: %m"); | |
3116 | } | |
4f882b2a TG |
3117 | } |
3118 | ||
bb262ef0 YW |
3119 | old_master = link->master_ifindex; |
3120 | (void) sd_netlink_message_read_u32(m, IFLA_MASTER, (uint32_t *) &link->master_ifindex); | |
3121 | ||
d236718c | 3122 | link_was_admin_up = link->flags & IFF_UP; |
a61bb41c TG |
3123 | had_carrier = link_has_carrier(link); |
3124 | ||
bb262ef0 | 3125 | r = link_update_flags(link, m, old_master != link->master_ifindex); |
a61bb41c TG |
3126 | if (r < 0) |
3127 | return r; | |
3128 | ||
d236718c DS |
3129 | if (!link_was_admin_up && (link->flags & IFF_UP)) { |
3130 | log_link_info(link, "Link UP"); | |
3131 | ||
3132 | r = link_admin_state_up(link); | |
3133 | if (r < 0) | |
3134 | return r; | |
3135 | } else if (link_was_admin_up && !(link->flags & IFF_UP)) | |
3136 | log_link_info(link, "Link DOWN"); | |
3137 | ||
273eec24 LP |
3138 | r = link_update_lldp(link); |
3139 | if (r < 0) | |
3140 | return r; | |
3141 | ||
a61bb41c TG |
3142 | carrier_gained = !had_carrier && link_has_carrier(link); |
3143 | carrier_lost = had_carrier && !link_has_carrier(link); | |
3144 | ||
3145 | if (carrier_gained) { | |
6a7a4e4d | 3146 | log_link_info(link, "Gained carrier"); |
a61bb41c | 3147 | |
9c0a72f9 TG |
3148 | r = link_carrier_gained(link); |
3149 | if (r < 0) | |
3150 | return r; | |
a61bb41c | 3151 | } else if (carrier_lost) { |
6a7a4e4d | 3152 | log_link_info(link, "Lost carrier"); |
a61bb41c | 3153 | |
9c0a72f9 TG |
3154 | r = link_carrier_lost(link); |
3155 | if (r < 0) | |
a61bb41c | 3156 | return r; |
a61bb41c TG |
3157 | } |
3158 | ||
3159 | return 0; | |
dd3efc09 | 3160 | } |
fe8db0c5 | 3161 | |
b295beea LP |
3162 | static void print_link_hashmap(FILE *f, const char *prefix, Hashmap* h) { |
3163 | bool space = false; | |
b295beea LP |
3164 | Link *link; |
3165 | ||
3166 | assert(f); | |
3167 | assert(prefix); | |
3168 | ||
3169 | if (hashmap_isempty(h)) | |
3170 | return; | |
3171 | ||
0d536673 | 3172 | fputs(prefix, f); |
90e74a66 | 3173 | HASHMAP_FOREACH(link, h) { |
b295beea | 3174 | if (space) |
0d536673 | 3175 | fputc(' ', f); |
b295beea LP |
3176 | |
3177 | fprintf(f, "%i", link->ifindex); | |
3178 | space = true; | |
3179 | } | |
3180 | ||
0d536673 | 3181 | fputc('\n', f); |
b295beea LP |
3182 | } |
3183 | ||
64581765 | 3184 | static void link_save_dns(Link *link, FILE *f, struct in_addr_full **dns, unsigned n_dns, bool *space) { |
dddc8d1e | 3185 | for (unsigned j = 0; j < n_dns; j++) { |
e77bd3fd | 3186 | const char *str; |
15761549 | 3187 | |
64581765 YW |
3188 | if (dns[j]->ifindex != 0 && dns[j]->ifindex != link->ifindex) |
3189 | continue; | |
3190 | ||
e77bd3fd YW |
3191 | str = in_addr_full_to_string(dns[j]); |
3192 | if (!str) | |
15761549 | 3193 | continue; |
15761549 YW |
3194 | |
3195 | if (*space) | |
3196 | fputc(' ', f); | |
e77bd3fd | 3197 | fputs(str, f); |
15761549 YW |
3198 | *space = true; |
3199 | } | |
3200 | } | |
3201 | ||
d5e172d2 ZJS |
3202 | static void serialize_addresses( |
3203 | FILE *f, | |
3204 | const char *lvalue, | |
3205 | bool *space, | |
3206 | char **addresses, | |
3207 | sd_dhcp_lease *lease, | |
3208 | bool conditional, | |
ddb82ec2 | 3209 | sd_dhcp_lease_server_type what, |
d5e172d2 ZJS |
3210 | sd_dhcp6_lease *lease6, |
3211 | bool conditional6, | |
3212 | int (*lease6_get_addr)(sd_dhcp6_lease*, const struct in6_addr**), | |
3213 | int (*lease6_get_fqdn)(sd_dhcp6_lease*, char ***)) { | |
3214 | int r; | |
3215 | ||
3216 | bool _space = false; | |
3217 | if (!space) | |
3218 | space = &_space; | |
3219 | ||
3220 | if (lvalue) | |
3221 | fprintf(f, "%s=", lvalue); | |
3222 | fputstrv(f, addresses, NULL, space); | |
3223 | ||
3224 | if (lease && conditional) { | |
3225 | const struct in_addr *lease_addresses; | |
3226 | ||
3227 | r = sd_dhcp_lease_get_servers(lease, what, &lease_addresses); | |
3228 | if (r > 0) | |
d8bff5cc | 3229 | serialize_in_addrs(f, lease_addresses, r, space, in4_addr_is_non_local); |
d5e172d2 ZJS |
3230 | } |
3231 | ||
3232 | if (lease6 && conditional6 && lease6_get_addr) { | |
3233 | const struct in6_addr *in6_addrs; | |
3234 | ||
3235 | r = lease6_get_addr(lease6, &in6_addrs); | |
d8bff5cc ZJS |
3236 | if (r > 0) |
3237 | serialize_in6_addrs(f, in6_addrs, r, space); | |
d5e172d2 ZJS |
3238 | } |
3239 | ||
3240 | if (lease6 && conditional6 && lease6_get_fqdn) { | |
3241 | char **in6_hosts; | |
3242 | ||
3243 | r = lease6_get_fqdn(lease6, &in6_hosts); | |
3244 | if (r > 0) | |
3245 | fputstrv(f, in6_hosts, NULL, space); | |
3246 | } | |
3247 | ||
3248 | if (lvalue) | |
3249 | fputc('\n', f); | |
3250 | } | |
3251 | ||
fe8db0c5 | 3252 | int link_save(Link *link) { |
d361b373 | 3253 | const char *admin_state, *oper_state, *carrier_state, *address_state; |
68a8723c | 3254 | _cleanup_free_ char *temp_path = NULL; |
fe8db0c5 TG |
3255 | _cleanup_fclose_ FILE *f = NULL; |
3256 | int r; | |
3257 | ||
3258 | assert(link); | |
3259 | assert(link->state_file); | |
68a8723c | 3260 | assert(link->lease_file); |
bbf7c048 TG |
3261 | assert(link->manager); |
3262 | ||
370e9930 | 3263 | if (link->state == LINK_STATE_LINGER) { |
6990fb6b | 3264 | (void) unlink(link->state_file); |
370e9930 TG |
3265 | return 0; |
3266 | } | |
3267 | ||
34437b4f LP |
3268 | link_lldp_save(link); |
3269 | ||
deb2e523 TG |
3270 | admin_state = link_state_to_string(link->state); |
3271 | assert(admin_state); | |
3272 | ||
e375dcde TG |
3273 | oper_state = link_operstate_to_string(link->operstate); |
3274 | assert(oper_state); | |
deb2e523 | 3275 | |
ac999bf0 YW |
3276 | carrier_state = link_carrier_state_to_string(link->carrier_state); |
3277 | assert(carrier_state); | |
3278 | ||
3279 | address_state = link_address_state_to_string(link->address_state); | |
3280 | assert(address_state); | |
3281 | ||
fe8db0c5 TG |
3282 | r = fopen_temporary(link->state_file, &f, &temp_path); |
3283 | if (r < 0) | |
6a7a4e4d | 3284 | goto fail; |
fe8db0c5 | 3285 | |
5512a963 | 3286 | (void) fchmod(fileno(f), 0644); |
fe8db0c5 TG |
3287 | |
3288 | fprintf(f, | |
3289 | "# This is private data. Do not parse.\n" | |
deb2e523 | 3290 | "ADMIN_STATE=%s\n" |
ac999bf0 YW |
3291 | "OPER_STATE=%s\n" |
3292 | "CARRIER_STATE=%s\n" | |
3293 | "ADDRESS_STATE=%s\n", | |
3294 | admin_state, oper_state, carrier_state, address_state); | |
fe8db0c5 | 3295 | |
bcb7a07e | 3296 | if (link->network) { |
fe0e16db YW |
3297 | char **dhcp6_domains = NULL, **dhcp_domains = NULL; |
3298 | const char *dhcp_domainname = NULL, *p; | |
fe0e16db | 3299 | bool space; |
07bdc70d | 3300 | |
c1a38904 MTL |
3301 | fprintf(f, "REQUIRED_FOR_ONLINE=%s\n", |
3302 | yes_no(link->network->required_for_online)); | |
3303 | ||
d5e172d2 ZJS |
3304 | LinkOperationalStateRange st = link->network->required_operstate_for_online; |
3305 | fprintf(f, "REQUIRED_OPER_STATE_FOR_ONLINE=%s%s%s\n", | |
3306 | strempty(link_operstate_to_string(st.min)), | |
3307 | st.max != LINK_OPERSTATE_RANGE_DEFAULT.max ? ":" : "", | |
3308 | st.max != LINK_OPERSTATE_RANGE_DEFAULT.max ? strempty(link_operstate_to_string(st.max)) : ""); | |
4ac77d63 | 3309 | |
adc5b2e2 TG |
3310 | fprintf(f, "NETWORK_FILE=%s\n", link->network->filename); |
3311 | ||
d5e172d2 ZJS |
3312 | /************************************************************/ |
3313 | ||
0d536673 | 3314 | fputs("DNS=", f); |
ea352b40 | 3315 | space = false; |
15761549 | 3316 | if (link->n_dns != (unsigned) -1) |
64581765 | 3317 | link_save_dns(link, f, link->dns, link->n_dns, &space); |
15761549 | 3318 | else |
64581765 | 3319 | link_save_dns(link, f, link->network->dns, link->network->n_dns, &space); |
d5314fff | 3320 | |
d5e172d2 ZJS |
3321 | serialize_addresses(f, NULL, &space, |
3322 | NULL, | |
3323 | link->dhcp_lease, | |
3324 | link->network->dhcp_use_dns, | |
ddb82ec2 | 3325 | SD_DHCP_LEASE_DNS, |
1633c457 | 3326 | link->dhcp6_lease, |
d5e172d2 ZJS |
3327 | link->network->dhcp6_use_dns, |
3328 | sd_dhcp6_lease_get_dns, | |
3329 | NULL); | |
1e7a0e21 | 3330 | |
a8c10331 | 3331 | /* Make sure to flush out old entries before we use the NDisc data */ |
1e7a0e21 LP |
3332 | ndisc_vacuum(link); |
3333 | ||
b296797f | 3334 | if (link->network->ipv6_accept_ra_use_dns && link->ndisc_rdnss) { |
1e7a0e21 LP |
3335 | NDiscRDNSS *dd; |
3336 | ||
90e74a66 | 3337 | SET_FOREACH(dd, link->ndisc_rdnss) |
d8bff5cc | 3338 | serialize_in6_addrs(f, &dd->address, 1, &space); |
299d578f SS |
3339 | } |
3340 | ||
3341 | fputc('\n', f); | |
3342 | ||
d5e172d2 ZJS |
3343 | /************************************************************/ |
3344 | ||
3345 | serialize_addresses(f, "NTP", NULL, | |
3346 | link->ntp ?: link->network->ntp, | |
3347 | link->dhcp_lease, | |
3348 | link->network->dhcp_use_ntp, | |
ddb82ec2 | 3349 | SD_DHCP_LEASE_NTP, |
1633c457 | 3350 | link->dhcp6_lease, |
d5e172d2 ZJS |
3351 | link->network->dhcp6_use_ntp, |
3352 | sd_dhcp6_lease_get_ntp_addrs, | |
3353 | sd_dhcp6_lease_get_ntp_fqdn); | |
3354 | ||
3355 | serialize_addresses(f, "SIP", NULL, | |
2a71d57f | 3356 | NULL, |
d5e172d2 ZJS |
3357 | link->dhcp_lease, |
3358 | link->network->dhcp_use_sip, | |
ddb82ec2 | 3359 | SD_DHCP_LEASE_SIP, |
2a71d57f | 3360 | NULL, false, NULL, NULL); |
d5e172d2 ZJS |
3361 | |
3362 | /************************************************************/ | |
bd8f6538 | 3363 | |
b2a81c0b | 3364 | if (link->network->dhcp_use_domains != DHCP_USE_DOMAINS_NO) { |
b85bc551 | 3365 | if (link->dhcp_lease) { |
b2a81c0b | 3366 | (void) sd_dhcp_lease_get_domainname(link->dhcp_lease, &dhcp_domainname); |
b85bc551 DW |
3367 | (void) sd_dhcp_lease_get_search_domains(link->dhcp_lease, &dhcp_domains); |
3368 | } | |
1633c457 YW |
3369 | if (link->dhcp6_lease) |
3370 | (void) sd_dhcp6_lease_get_domains(link->dhcp6_lease, &dhcp6_domains); | |
07bdc70d PF |
3371 | } |
3372 | ||
fe0e16db YW |
3373 | fputs("DOMAINS=", f); |
3374 | space = false; | |
90e74a66 | 3375 | ORDERED_SET_FOREACH(p, link->search_domains ?: link->network->search_domains) |
fe0e16db | 3376 | fputs_with_space(f, p, NULL, &space); |
07bdc70d | 3377 | |
1e7a0e21 | 3378 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_YES) { |
1e7a0e21 LP |
3379 | if (dhcp_domainname) |
3380 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
3381 | if (dhcp_domains) |
3382 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
3383 | if (dhcp6_domains) |
3384 | fputstrv(f, dhcp6_domains, NULL, &space); | |
a0cd6da5 YW |
3385 | } |
3386 | ||
3387 | if (link->network->ipv6_accept_ra_use_domains == DHCP_USE_DOMAINS_YES) { | |
3388 | NDiscDNSSL *dd; | |
1e7a0e21 | 3389 | |
90e74a66 | 3390 | SET_FOREACH(dd, link->ndisc_dnssl) |
1e7a0e21 LP |
3391 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); |
3392 | } | |
b2a81c0b | 3393 | |
0d536673 | 3394 | fputc('\n', f); |
6192b846 | 3395 | |
d5e172d2 ZJS |
3396 | /************************************************************/ |
3397 | ||
fe0e16db YW |
3398 | fputs("ROUTE_DOMAINS=", f); |
3399 | space = false; | |
90e74a66 | 3400 | ORDERED_SET_FOREACH(p, link->route_domains ?: link->network->route_domains) |
fe0e16db | 3401 | fputs_with_space(f, p, NULL, &space); |
b2a81c0b | 3402 | |
1e7a0e21 | 3403 | if (link->network->dhcp_use_domains == DHCP_USE_DOMAINS_ROUTE) { |
1e7a0e21 LP |
3404 | if (dhcp_domainname) |
3405 | fputs_with_space(f, dhcp_domainname, NULL, &space); | |
b85bc551 DW |
3406 | if (dhcp_domains) |
3407 | fputstrv(f, dhcp_domains, NULL, &space); | |
1e7a0e21 LP |
3408 | if (dhcp6_domains) |
3409 | fputstrv(f, dhcp6_domains, NULL, &space); | |
a0cd6da5 YW |
3410 | } |
3411 | ||
3412 | if (link->network->ipv6_accept_ra_use_domains == DHCP_USE_DOMAINS_ROUTE) { | |
3413 | NDiscDNSSL *dd; | |
1e7a0e21 | 3414 | |
90e74a66 | 3415 | SET_FOREACH(dd, link->ndisc_dnssl) |
1e7a0e21 LP |
3416 | fputs_with_space(f, NDISC_DNSSL_DOMAIN(dd), NULL, &space); |
3417 | } | |
b2a81c0b | 3418 | |
0d536673 | 3419 | fputc('\n', f); |
67272d15 | 3420 | |
d5e172d2 ZJS |
3421 | /************************************************************/ |
3422 | ||
3c9b8860 | 3423 | fprintf(f, "LLMNR=%s\n", |
15761549 | 3424 | resolve_support_to_string(link->llmnr >= 0 ? link->llmnr : link->network->llmnr)); |
d5e172d2 ZJS |
3425 | |
3426 | /************************************************************/ | |
3427 | ||
aaa297d4 | 3428 | fprintf(f, "MDNS=%s\n", |
15761549 | 3429 | resolve_support_to_string(link->mdns >= 0 ? link->mdns : link->network->mdns)); |
15761549 | 3430 | |
d5e172d2 ZJS |
3431 | /************************************************************/ |
3432 | ||
3433 | int dns_default_route = | |
3434 | link->dns_default_route >= 0 ? link->dns_default_route : | |
3435 | link->network->dns_default_route; | |
3436 | if (dns_default_route >= 0) | |
3437 | fprintf(f, "DNS_DEFAULT_ROUTE=%s\n", yes_no(dns_default_route)); | |
3438 | ||
3439 | /************************************************************/ | |
3440 | ||
3441 | DnsOverTlsMode dns_over_tls_mode = | |
3442 | link->dns_over_tls_mode != _DNS_OVER_TLS_MODE_INVALID ? link->dns_over_tls_mode : | |
3443 | link->network->dns_over_tls_mode; | |
3444 | if (dns_over_tls_mode != _DNS_OVER_TLS_MODE_INVALID) | |
3445 | fprintf(f, "DNS_OVER_TLS=%s\n", dns_over_tls_mode_to_string(dns_over_tls_mode)); | |
3446 | ||
3447 | /************************************************************/ | |
3448 | ||
3449 | DnssecMode dnssec_mode = | |
3450 | link->dnssec_mode != _DNSSEC_MODE_INVALID ? link->dnssec_mode : | |
3451 | link->network->dnssec_mode; | |
3452 | if (dnssec_mode != _DNSSEC_MODE_INVALID) | |
3453 | fprintf(f, "DNSSEC=%s\n", dnssec_mode_to_string(dnssec_mode)); | |
3454 | ||
3455 | /************************************************************/ | |
3456 | ||
3457 | Set *nta_anchors = link->dnssec_negative_trust_anchors; | |
3458 | if (set_isempty(nta_anchors)) | |
3459 | nta_anchors = link->network->dnssec_negative_trust_anchors; | |
3460 | ||
3461 | if (!set_isempty(nta_anchors)) { | |
8a516214 LP |
3462 | const char *n; |
3463 | ||
0d536673 | 3464 | fputs("DNSSEC_NTA=", f); |
8a516214 | 3465 | space = false; |
90e74a66 | 3466 | SET_FOREACH(n, nta_anchors) |
d390f8ef | 3467 | fputs_with_space(f, n, NULL, &space); |
0d536673 | 3468 | fputc('\n', f); |
8a516214 LP |
3469 | } |
3470 | ||
d5e172d2 ZJS |
3471 | /************************************************************/ |
3472 | ||
3b31e2b7 YW |
3473 | r = link_serialize_addresses(link, f); |
3474 | if (r < 0) | |
3475 | goto fail; | |
c1eb9872 | 3476 | |
d5e172d2 ZJS |
3477 | /************************************************************/ |
3478 | ||
56519412 YW |
3479 | r = link_serialize_routes(link, f); |
3480 | if (r < 0) | |
3481 | goto fail; | |
bcb7a07e | 3482 | } |
7374f9d8 | 3483 | |
b295beea LP |
3484 | print_link_hashmap(f, "CARRIER_BOUND_TO=", link->bound_to_links); |
3485 | print_link_hashmap(f, "CARRIER_BOUND_BY=", link->bound_by_links); | |
0d4ad91d | 3486 | |
8eb9058d | 3487 | if (link->dhcp_lease) { |
bd91b83e | 3488 | r = dhcp_lease_save(link->dhcp_lease, link->lease_file); |
fe8db0c5 | 3489 | if (r < 0) |
c2d6bd61 | 3490 | goto fail; |
fe8db0c5 | 3491 | |
7374f9d8 | 3492 | fprintf(f, |
b0e39c82 TG |
3493 | "DHCP_LEASE=%s\n", |
3494 | link->lease_file); | |
deb2e523 | 3495 | } else |
6990fb6b | 3496 | (void) unlink(link->lease_file); |
fe8db0c5 | 3497 | |
ca21a19a YW |
3498 | r = link_serialize_ipv4ll(link, f); |
3499 | if (r < 0) | |
3500 | goto fail; | |
0bc70f1d | 3501 | |
5460bde5 YW |
3502 | r = link_serialize_dhcp6_client(link, f); |
3503 | if (r < 0) | |
3504 | goto fail; | |
18d8a2cf | 3505 | |
c2d6bd61 LP |
3506 | r = fflush_and_check(f); |
3507 | if (r < 0) | |
3508 | goto fail; | |
fe8db0c5 | 3509 | |
c2d6bd61 | 3510 | if (rename(temp_path, link->state_file) < 0) { |
fe8db0c5 | 3511 | r = -errno; |
c2d6bd61 | 3512 | goto fail; |
fe8db0c5 TG |
3513 | } |
3514 | ||
c2d6bd61 | 3515 | return 0; |
dacd6cee | 3516 | |
c2d6bd61 | 3517 | fail: |
6a7a4e4d | 3518 | (void) unlink(link->state_file); |
6a7a4e4d LP |
3519 | if (temp_path) |
3520 | (void) unlink(temp_path); | |
3521 | ||
dacd6cee | 3522 | return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); |
fe8db0c5 TG |
3523 | } |
3524 | ||
84de38c5 TG |
3525 | /* The serialized state in /run is no longer up-to-date. */ |
3526 | void link_dirty(Link *link) { | |
3527 | int r; | |
3528 | ||
3529 | assert(link); | |
3530 | ||
0c241a37 SS |
3531 | /* mark manager dirty as link is dirty */ |
3532 | manager_dirty(link->manager); | |
3533 | ||
de7fef4b | 3534 | r = set_ensure_put(&link->manager->dirty_links, NULL, link); |
0c241a37 | 3535 | if (r <= 0) |
de7fef4b | 3536 | /* Ignore allocation errors and don't take another ref if the link was already dirty */ |
84de38c5 | 3537 | return; |
84de38c5 TG |
3538 | link_ref(link); |
3539 | } | |
3540 | ||
3541 | /* The serialized state in /run is up-to-date */ | |
3542 | void link_clean(Link *link) { | |
3543 | assert(link); | |
3544 | assert(link->manager); | |
3545 | ||
1046bf9b | 3546 | link_unref(set_remove(link->manager->dirty_links, link)); |
84de38c5 TG |
3547 | } |
3548 | ||
c2a65950 YW |
3549 | int link_save_and_clean(Link *link) { |
3550 | int r; | |
3551 | ||
3552 | r = link_save(link); | |
3553 | if (r < 0) | |
3554 | return r; | |
3555 | ||
3556 | link_clean(link); | |
3557 | return 0; | |
3558 | } | |
3559 | ||
fe8db0c5 | 3560 | static const char* const link_state_table[_LINK_STATE_MAX] = { |
8434fd5c | 3561 | [LINK_STATE_PENDING] = "pending", |
bd08ce56 | 3562 | [LINK_STATE_INITIALIZED] = "initialized", |
289e6774 | 3563 | [LINK_STATE_CONFIGURING] = "configuring", |
fe8db0c5 | 3564 | [LINK_STATE_CONFIGURED] = "configured", |
57bd6899 | 3565 | [LINK_STATE_UNMANAGED] = "unmanaged", |
fe8db0c5 | 3566 | [LINK_STATE_FAILED] = "failed", |
370e9930 | 3567 | [LINK_STATE_LINGER] = "linger", |
fe8db0c5 TG |
3568 | }; |
3569 | ||
3570 | DEFINE_STRING_TABLE_LOOKUP(link_state, LinkState); | |
5ecb131d YW |
3571 | |
3572 | int log_link_message_full_errno(Link *link, sd_netlink_message *m, int level, int err, const char *msg) { | |
3573 | const char *err_msg = NULL; | |
3574 | ||
3575 | (void) sd_netlink_message_read_string(m, NLMSGERR_ATTR_MSG, &err_msg); | |
d157714b YW |
3576 | return log_link_full_errno(link, level, err, |
3577 | "%s: %s%s%s%m", | |
3578 | msg, | |
3579 | strempty(err_msg), | |
3580 | err_msg && !endswith(err_msg, ".") ? "." : "", | |
3581 | err_msg ? " " : ""); | |
5ecb131d | 3582 | } |