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0fa8ee6c YW |
1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
2 | ||
93fabc10 YW |
3 | #include <netinet/in.h> |
4 | #include <linux/if.h> | |
7558f9e7 | 5 | #include <linux/if_arp.h> |
93fabc10 | 6 | |
0fa8ee6c YW |
7 | #include "missing_network.h" |
8 | #include "netlink-util.h" | |
7558f9e7 | 9 | #include "networkd-can.h" |
0fa8ee6c YW |
10 | #include "networkd-link.h" |
11 | #include "networkd-manager.h" | |
12 | #include "networkd-queue.h" | |
9b682672 | 13 | #include "networkd-setlink.h" |
0fa8ee6c YW |
14 | #include "string-table.h" |
15 | ||
16 | static const char *const set_link_operation_table[_SET_LINK_OPERATION_MAX] = { | |
8e00e24c | 17 | [SET_LINK_ADDRESS_GENERATION_MODE] = "IPv6LL address generation mode", |
5062b859 | 18 | [SET_LINK_BOND] = "bond configurations", |
7d5b232f | 19 | [SET_LINK_BRIDGE] = "bridge configurations", |
8252fb44 | 20 | [SET_LINK_BRIDGE_VLAN] = "bridge VLAN configurations", |
7558f9e7 | 21 | [SET_LINK_CAN] = "CAN interface configurations", |
93fabc10 | 22 | [SET_LINK_FLAGS] = "link flags", |
cc4c8fb1 | 23 | [SET_LINK_GROUP] = "interface group", |
a8e5e27c | 24 | [SET_LINK_MAC] = "MAC address", |
d24bf1b5 | 25 | [SET_LINK_MASTER] = "master interface", |
0fa8ee6c YW |
26 | [SET_LINK_MTU] = "MTU", |
27 | }; | |
28 | ||
29 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(set_link_operation, SetLinkOperation); | |
30 | ||
1362bd6c YW |
31 | static int get_link_default_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
32 | return link_getlink_handler_internal(rtnl, m, link, "Failed to sync link information"); | |
33 | } | |
34 | ||
440d40dc YW |
35 | static int get_link_master_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
36 | if (get_link_default_handler(rtnl, m, link) > 0) | |
37 | link->master_set = true; | |
38 | return 0; | |
39 | } | |
40 | ||
baa95d22 YW |
41 | static int get_link_update_flag_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
42 | assert(link); | |
43 | assert(link->set_flags_messages > 0); | |
44 | ||
45 | link->set_flags_messages--; | |
46 | ||
47 | return get_link_default_handler(rtnl, m, link); | |
48 | } | |
49 | ||
1362bd6c YW |
50 | static int set_link_handler_internal( |
51 | sd_netlink *rtnl, | |
52 | sd_netlink_message *m, | |
53 | Link *link, | |
54 | SetLinkOperation op, | |
55 | bool ignore, | |
56 | link_netlink_message_handler_t get_link_handler) { | |
57 | ||
0fa8ee6c YW |
58 | int r; |
59 | ||
60 | assert(m); | |
61 | assert(link); | |
62 | assert(link->set_link_messages > 0); | |
63 | assert(op >= 0 && op < _SET_LINK_OPERATION_MAX); | |
64 | ||
65 | link->set_link_messages--; | |
66 | ||
67 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
baa95d22 | 68 | goto on_error; |
0fa8ee6c YW |
69 | |
70 | r = sd_netlink_message_get_errno(m); | |
71 | if (r < 0) { | |
72 | const char *error_msg; | |
73 | ||
74 | error_msg = strjoina("Failed to set ", set_link_operation_to_string(op), ignore ? ", ignoring" : ""); | |
75 | log_link_message_warning_errno(link, m, r, error_msg); | |
76 | ||
77 | if (!ignore) | |
78 | link_enter_failed(link); | |
baa95d22 | 79 | goto on_error; |
0fa8ee6c YW |
80 | } |
81 | ||
82 | log_link_debug(link, "%s set.", set_link_operation_to_string(op)); | |
1362bd6c YW |
83 | |
84 | if (get_link_handler) { | |
85 | r = link_call_getlink(link, get_link_handler); | |
86 | if (r < 0) { | |
87 | link_enter_failed(link); | |
baa95d22 | 88 | goto on_error; |
1362bd6c YW |
89 | } |
90 | } | |
91 | ||
92 | if (link->set_link_messages == 0) | |
93 | link_check_ready(link); | |
94 | ||
0fa8ee6c | 95 | return 1; |
baa95d22 YW |
96 | |
97 | on_error: | |
98 | if (op == SET_LINK_FLAGS) { | |
99 | assert(link->set_flags_messages > 0); | |
100 | link->set_flags_messages--; | |
101 | } | |
102 | ||
103 | return 0; | |
0fa8ee6c YW |
104 | } |
105 | ||
8e00e24c YW |
106 | static int link_set_addrgen_mode_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
107 | int r; | |
108 | ||
1362bd6c | 109 | r = set_link_handler_internal(rtnl, m, link, SET_LINK_ADDRESS_GENERATION_MODE, true, NULL); |
8e00e24c YW |
110 | if (r <= 0) |
111 | return r; | |
112 | ||
113 | r = link_drop_ipv6ll_addresses(link); | |
114 | if (r < 0) { | |
115 | log_link_warning_errno(link, r, "Failed to drop IPv6LL addresses: %m"); | |
116 | link_enter_failed(link); | |
117 | } | |
118 | ||
119 | return 0; | |
120 | } | |
121 | ||
5062b859 | 122 | static int link_set_bond_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
2a057a73 | 123 | return set_link_handler_internal(rtnl, m, link, SET_LINK_BOND, false, NULL); |
5062b859 YW |
124 | } |
125 | ||
7d5b232f | 126 | static int link_set_bridge_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
2a057a73 | 127 | return set_link_handler_internal(rtnl, m, link, SET_LINK_BRIDGE, false, NULL); |
7d5b232f YW |
128 | } |
129 | ||
8252fb44 | 130 | static int link_set_bridge_vlan_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
2a057a73 | 131 | return set_link_handler_internal(rtnl, m, link, SET_LINK_BRIDGE_VLAN, false, NULL); |
8252fb44 YW |
132 | } |
133 | ||
7558f9e7 YW |
134 | static int link_set_can_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
135 | return set_link_handler_internal(rtnl, m, link, SET_LINK_CAN, false, NULL); | |
136 | } | |
137 | ||
93fabc10 | 138 | static int link_set_flags_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
baa95d22 | 139 | return set_link_handler_internal(rtnl, m, link, SET_LINK_FLAGS, false, get_link_update_flag_handler); |
93fabc10 YW |
140 | } |
141 | ||
cc4c8fb1 | 142 | static int link_set_group_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
2a057a73 | 143 | return set_link_handler_internal(rtnl, m, link, SET_LINK_GROUP, false, NULL); |
cc4c8fb1 YW |
144 | } |
145 | ||
a8e5e27c | 146 | static int link_set_mac_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
1362bd6c | 147 | return set_link_handler_internal(rtnl, m, link, SET_LINK_MAC, true, get_link_default_handler); |
a8e5e27c YW |
148 | } |
149 | ||
d05c332c YW |
150 | static int link_set_mac_allow_retry_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
151 | int r; | |
152 | ||
153 | assert(m); | |
154 | assert(link); | |
155 | assert(link->set_link_messages > 0); | |
156 | ||
157 | link->set_link_messages--; | |
158 | ||
159 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
160 | return 0; | |
161 | ||
162 | r = sd_netlink_message_get_errno(m); | |
163 | if (r == -EBUSY) { | |
164 | /* Most real network devices refuse to set its hardware address with -EBUSY when its | |
165 | * operstate is not down. See, eth_prepare_mac_addr_change() in net/ethernet/eth.c | |
166 | * of kernel. */ | |
167 | ||
168 | log_link_message_debug_errno(link, m, r, "Failed to set MAC address, retrying again: %m"); | |
169 | ||
170 | r = link_request_to_set_mac(link, /* allow_retry = */ false); | |
171 | if (r < 0) | |
172 | link_enter_failed(link); | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | /* set_link_mac_handler() also decrement set_link_messages, so once increment the value. */ | |
178 | link->set_link_messages++; | |
179 | return link_set_mac_handler(rtnl, m, link); | |
180 | } | |
181 | ||
d24bf1b5 | 182 | static int link_set_master_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
2a057a73 | 183 | return set_link_handler_internal(rtnl, m, link, SET_LINK_MASTER, false, get_link_master_handler); |
d24bf1b5 YW |
184 | } |
185 | ||
0fa8ee6c YW |
186 | static int link_set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { |
187 | int r; | |
188 | ||
1362bd6c | 189 | r = set_link_handler_internal(rtnl, m, link, SET_LINK_MTU, true, get_link_default_handler); |
0fa8ee6c YW |
190 | if (r <= 0) |
191 | return r; | |
192 | ||
193 | /* The kernel resets ipv6 mtu after changing device mtu; | |
194 | * we must set this here, after we've set device mtu */ | |
195 | r = link_set_ipv6_mtu(link); | |
196 | if (r < 0) | |
197 | log_link_warning_errno(link, r, "Failed to set IPv6 MTU, ignoring: %m"); | |
198 | ||
0fa8ee6c YW |
199 | return 0; |
200 | } | |
201 | ||
202 | static int link_configure( | |
203 | Link *link, | |
204 | SetLinkOperation op, | |
205 | void *userdata, | |
206 | link_netlink_message_handler_t callback) { | |
207 | ||
208 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
209 | int r; | |
210 | ||
211 | assert(link); | |
212 | assert(link->manager); | |
213 | assert(link->manager->rtnl); | |
214 | assert(link->network); | |
215 | assert(op >= 0 && op < _SET_LINK_OPERATION_MAX); | |
216 | assert(callback); | |
217 | ||
218 | log_link_debug(link, "Setting %s", set_link_operation_to_string(op)); | |
219 | ||
7558f9e7 | 220 | if (IN_SET(op, SET_LINK_BOND, SET_LINK_CAN)) { |
5062b859 YW |
221 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_NEWLINK, link->master_ifindex); |
222 | if (r < 0) | |
223 | return log_link_debug_errno(link, r, "Could not allocate RTM_NEWLINK message: %m"); | |
224 | } else { | |
225 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
226 | if (r < 0) | |
227 | return log_link_debug_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
228 | } | |
0fa8ee6c YW |
229 | |
230 | switch (op) { | |
8e00e24c YW |
231 | case SET_LINK_ADDRESS_GENERATION_MODE: |
232 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); | |
233 | if (r < 0) | |
234 | return log_link_debug_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
235 | ||
236 | r = sd_netlink_message_open_container(req, AF_INET6); | |
237 | if (r < 0) | |
238 | return log_link_debug_errno(link, r, "Could not open AF_INET6 container: %m"); | |
239 | ||
240 | r = sd_netlink_message_append_u8(req, IFLA_INET6_ADDR_GEN_MODE, PTR_TO_UINT8(userdata)); | |
241 | if (r < 0) | |
242 | return log_link_debug_errno(link, r, "Could not append IFLA_INET6_ADDR_GEN_MODE attribute: %m"); | |
243 | ||
244 | r = sd_netlink_message_close_container(req); | |
245 | if (r < 0) | |
246 | return log_link_debug_errno(link, r, "Could not close AF_INET6 container: %m"); | |
247 | ||
248 | r = sd_netlink_message_close_container(req); | |
249 | if (r < 0) | |
250 | return log_link_debug_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
251 | break; | |
5062b859 YW |
252 | case SET_LINK_BOND: |
253 | r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK); | |
254 | if (r < 0) | |
255 | return log_link_debug_errno(link, r, "Could not set netlink message flags: %m"); | |
256 | ||
257 | r = sd_netlink_message_open_container(req, IFLA_LINKINFO); | |
258 | if (r < 0) | |
259 | return log_link_debug_errno(link, r, "Could not open IFLA_LINKINFO container: %m"); | |
260 | ||
261 | r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, "bond"); | |
262 | if (r < 0) | |
263 | return log_link_debug_errno(link, r, "Could not open IFLA_INFO_DATA container: %m"); | |
264 | ||
265 | if (link->network->active_slave) { | |
266 | r = sd_netlink_message_append_u32(req, IFLA_BOND_ACTIVE_SLAVE, link->ifindex); | |
267 | if (r < 0) | |
268 | return log_link_debug_errno(link, r, "Could not append IFLA_BOND_ACTIVE_SLAVE attribute: %m"); | |
269 | } | |
270 | ||
271 | if (link->network->primary_slave) { | |
272 | r = sd_netlink_message_append_u32(req, IFLA_BOND_PRIMARY, link->ifindex); | |
273 | if (r < 0) | |
274 | return log_link_debug_errno(link, r, "Could not append IFLA_BOND_PRIMARY attribute: %m"); | |
275 | } | |
276 | ||
277 | r = sd_netlink_message_close_container(req); | |
278 | if (r < 0) | |
279 | return log_link_debug_errno(link, r, "Could not close IFLA_INFO_DATA container: %m"); | |
280 | ||
281 | r = sd_netlink_message_close_container(req); | |
282 | if (r < 0) | |
283 | return log_link_debug_errno(link, r, "Could not close IFLA_LINKINFO container: %m"); | |
284 | ||
285 | break; | |
7d5b232f YW |
286 | case SET_LINK_BRIDGE: |
287 | r = sd_rtnl_message_link_set_family(req, AF_BRIDGE); | |
288 | if (r < 0) | |
289 | return log_link_debug_errno(link, r, "Could not set message family: %m"); | |
290 | ||
291 | r = sd_netlink_message_open_container(req, IFLA_PROTINFO); | |
292 | if (r < 0) | |
293 | return log_link_debug_errno(link, r, "Could not open IFLA_PROTINFO container: %m"); | |
294 | ||
295 | if (link->network->use_bpdu >= 0) { | |
296 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, link->network->use_bpdu); | |
297 | if (r < 0) | |
298 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m"); | |
299 | } | |
300 | ||
301 | if (link->network->hairpin >= 0) { | |
302 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin); | |
303 | if (r < 0) | |
304 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m"); | |
305 | } | |
306 | ||
307 | if (link->network->fast_leave >= 0) { | |
308 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave); | |
309 | if (r < 0) | |
310 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m"); | |
311 | } | |
312 | ||
313 | if (link->network->allow_port_to_be_root >= 0) { | |
314 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, link->network->allow_port_to_be_root); | |
315 | if (r < 0) | |
316 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m"); | |
317 | } | |
318 | ||
319 | if (link->network->unicast_flood >= 0) { | |
320 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood); | |
321 | if (r < 0) | |
322 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m"); | |
323 | } | |
324 | ||
325 | if (link->network->multicast_flood >= 0) { | |
326 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_FLOOD, link->network->multicast_flood); | |
327 | if (r < 0) | |
328 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_MCAST_FLOOD attribute: %m"); | |
329 | } | |
330 | ||
331 | if (link->network->multicast_to_unicast >= 0) { | |
332 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_TO_UCAST, link->network->multicast_to_unicast); | |
333 | if (r < 0) | |
334 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_MCAST_TO_UCAST attribute: %m"); | |
335 | } | |
336 | ||
337 | if (link->network->neighbor_suppression >= 0) { | |
338 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_NEIGH_SUPPRESS, link->network->neighbor_suppression); | |
339 | if (r < 0) | |
340 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_NEIGH_SUPPRESS attribute: %m"); | |
341 | } | |
342 | ||
343 | if (link->network->learning >= 0) { | |
344 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_LEARNING, link->network->learning); | |
345 | if (r < 0) | |
346 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_LEARNING attribute: %m"); | |
347 | } | |
348 | ||
349 | if (link->network->bridge_proxy_arp >= 0) { | |
350 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROXYARP, link->network->bridge_proxy_arp); | |
351 | if (r < 0) | |
352 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_PROXYARP attribute: %m"); | |
353 | } | |
354 | ||
355 | if (link->network->bridge_proxy_arp_wifi >= 0) { | |
356 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROXYARP_WIFI, link->network->bridge_proxy_arp_wifi); | |
357 | if (r < 0) | |
358 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_PROXYARP_WIFI attribute: %m"); | |
359 | } | |
360 | ||
361 | if (link->network->cost != 0) { | |
362 | r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost); | |
363 | if (r < 0) | |
364 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m"); | |
365 | } | |
366 | ||
367 | if (link->network->priority != LINK_BRIDGE_PORT_PRIORITY_INVALID) { | |
368 | r = sd_netlink_message_append_u16(req, IFLA_BRPORT_PRIORITY, link->network->priority); | |
369 | if (r < 0) | |
370 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_PRIORITY attribute: %m"); | |
371 | } | |
372 | ||
373 | if (link->network->multicast_router != _MULTICAST_ROUTER_INVALID) { | |
374 | r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MULTICAST_ROUTER, link->network->multicast_router); | |
375 | if (r < 0) | |
376 | return log_link_debug_errno(link, r, "Could not append IFLA_BRPORT_MULTICAST_ROUTER attribute: %m"); | |
377 | } | |
378 | ||
379 | r = sd_netlink_message_close_container(req); | |
380 | if (r < 0) | |
381 | return log_link_debug_errno(link, r, "Could not close IFLA_PROTINFO container: %m"); | |
382 | break; | |
8252fb44 YW |
383 | case SET_LINK_BRIDGE_VLAN: |
384 | r = sd_rtnl_message_link_set_family(req, AF_BRIDGE); | |
385 | if (r < 0) | |
386 | return log_link_debug_errno(link, r, "Could not set message family: %m"); | |
387 | ||
388 | r = sd_netlink_message_open_container(req, IFLA_AF_SPEC); | |
389 | if (r < 0) | |
390 | return log_link_debug_errno(link, r, "Could not open IFLA_AF_SPEC container: %m"); | |
391 | ||
392 | if (!link->network->bridge) { | |
7802194a | 393 | /* master needs BRIDGE_FLAGS_SELF flag */ |
8252fb44 YW |
394 | r = sd_netlink_message_append_u16(req, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF); |
395 | if (r < 0) | |
396 | return log_link_debug_errno(link, r, "Could not append IFLA_BRIDGE_FLAGS attribute: %m"); | |
397 | } | |
398 | ||
399 | r = bridge_vlan_append_info(link, req, link->network->pvid, link->network->br_vid_bitmap, link->network->br_untagged_bitmap); | |
400 | if (r < 0) | |
401 | return log_link_debug_errno(link, r, "Could not append VLANs: %m"); | |
402 | ||
403 | r = sd_netlink_message_close_container(req); | |
404 | if (r < 0) | |
405 | return log_link_debug_errno(link, r, "Could not close IFLA_AF_SPEC container: %m"); | |
406 | ||
407 | break; | |
7558f9e7 YW |
408 | case SET_LINK_CAN: |
409 | r = can_set_netlink_message(link, req); | |
410 | if (r < 0) | |
411 | return r; | |
412 | break; | |
93fabc10 YW |
413 | case SET_LINK_FLAGS: { |
414 | unsigned ifi_change = 0, ifi_flags = 0; | |
415 | ||
416 | if (link->network->arp >= 0) { | |
417 | ifi_change |= IFF_NOARP; | |
418 | SET_FLAG(ifi_flags, IFF_NOARP, link->network->arp == 0); | |
419 | } | |
420 | ||
421 | if (link->network->multicast >= 0) { | |
422 | ifi_change |= IFF_MULTICAST; | |
423 | SET_FLAG(ifi_flags, IFF_MULTICAST, link->network->multicast); | |
424 | } | |
425 | ||
426 | if (link->network->allmulticast >= 0) { | |
427 | ifi_change |= IFF_ALLMULTI; | |
428 | SET_FLAG(ifi_flags, IFF_ALLMULTI, link->network->allmulticast); | |
429 | } | |
430 | ||
431 | if (link->network->promiscuous >= 0) { | |
432 | ifi_change |= IFF_PROMISC; | |
433 | SET_FLAG(ifi_flags, IFF_PROMISC, link->network->promiscuous); | |
434 | } | |
435 | ||
436 | r = sd_rtnl_message_link_set_flags(req, ifi_flags, ifi_change); | |
437 | if (r < 0) | |
438 | return log_link_debug_errno(link, r, "Could not set link flags: %m"); | |
439 | ||
440 | break; | |
441 | } | |
cc4c8fb1 YW |
442 | case SET_LINK_GROUP: |
443 | r = sd_netlink_message_append_u32(req, IFLA_GROUP, link->network->group); | |
444 | if (r < 0) | |
445 | return log_link_debug_errno(link, r, "Could not append IFLA_GROUP attribute: %m"); | |
446 | break; | |
a8e5e27c YW |
447 | case SET_LINK_MAC: |
448 | r = sd_netlink_message_append_ether_addr(req, IFLA_ADDRESS, link->network->mac); | |
449 | if (r < 0) | |
450 | return log_link_debug_errno(link, r, "Could not append IFLA_ADDRESS attribute: %m"); | |
451 | break; | |
d24bf1b5 YW |
452 | case SET_LINK_MASTER: |
453 | r = sd_netlink_message_append_u32(req, IFLA_MASTER, PTR_TO_UINT32(userdata)); | |
454 | if (r < 0) | |
455 | return log_link_debug_errno(link, r, "Could not append IFLA_MASTER attribute: %m"); | |
456 | break; | |
0fa8ee6c YW |
457 | case SET_LINK_MTU: |
458 | r = sd_netlink_message_append_u32(req, IFLA_MTU, PTR_TO_UINT32(userdata)); | |
459 | if (r < 0) | |
460 | return log_link_debug_errno(link, r, "Could not append IFLA_MTU attribute: %m"); | |
461 | break; | |
462 | default: | |
463 | assert_not_reached("Invalid set link operation"); | |
464 | } | |
465 | ||
466 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, | |
467 | link_netlink_destroy_callback, link); | |
468 | if (r < 0) | |
469 | return log_link_debug_errno(link, r, "Could not send RTM_SETLINK message: %m"); | |
470 | ||
471 | link_ref(link); | |
472 | return 0; | |
473 | } | |
474 | ||
d24bf1b5 YW |
475 | static bool netdev_is_ready(NetDev *netdev) { |
476 | assert(netdev); | |
477 | ||
478 | if (netdev->state != NETDEV_STATE_READY) | |
479 | return false; | |
480 | if (netdev->ifindex == 0) | |
481 | return false; | |
482 | ||
483 | return true; | |
484 | } | |
485 | ||
0fa8ee6c | 486 | static bool link_is_ready_to_call_set_link(Request *req) { |
d24bf1b5 | 487 | SetLinkOperation op; |
0fa8ee6c | 488 | Link *link; |
d24bf1b5 | 489 | int r; |
0fa8ee6c YW |
490 | |
491 | assert(req); | |
492 | ||
493 | link = req->link; | |
9b682672 | 494 | op = PTR_TO_INT(req->set_link_operation_ptr); |
0fa8ee6c YW |
495 | |
496 | if (!IN_SET(link->state, LINK_STATE_INITIALIZED, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) | |
497 | return false; | |
498 | ||
d24bf1b5 | 499 | switch (op) { |
440d40dc YW |
500 | case SET_LINK_BOND: |
501 | case SET_LINK_BRIDGE: | |
502 | case SET_LINK_BRIDGE_VLAN: | |
503 | if (!link->master_set) | |
504 | return false; | |
505 | break; | |
7558f9e7 | 506 | case SET_LINK_CAN: |
baa95d22 YW |
507 | /* Do not check link->set_flgas_messages here, as it is ok even if link->flags |
508 | * is outdated, and checking the counter causes a deadlock. */ | |
7558f9e7 YW |
509 | if (FLAGS_SET(link->flags, IFF_UP)) { |
510 | /* The CAN interface must be down to configure bitrate, etc... */ | |
511 | r = link_down(link); | |
512 | if (r < 0) { | |
513 | link_enter_failed(link); | |
514 | return false; | |
515 | } | |
516 | } | |
517 | break; | |
d05c332c YW |
518 | case SET_LINK_MAC: |
519 | if (req->netlink_handler == link_set_mac_handler) { | |
520 | /* This is the second trial to set MTU. On the first attempt | |
521 | * req->netlink_handler points to link_set_mac_allow_retry_handler(). | |
522 | * The first trial failed as the interface was up. */ | |
523 | r = link_down(link); | |
524 | if (r < 0) { | |
525 | link_enter_failed(link); | |
526 | return false; | |
527 | } | |
528 | } | |
529 | break; | |
d24bf1b5 YW |
530 | case SET_LINK_MASTER: { |
531 | uint32_t m = 0; | |
532 | ||
533 | assert(link->network); | |
534 | ||
535 | if (link->network->batadv) { | |
536 | if (!netdev_is_ready(link->network->batadv)) | |
537 | return false; | |
538 | m = link->network->batadv->ifindex; | |
539 | } else if (link->network->bond) { | |
540 | if (!netdev_is_ready(link->network->bond)) | |
541 | return false; | |
542 | m = link->network->bond->ifindex; | |
543 | ||
baa95d22 YW |
544 | /* Do not check link->set_flgas_messages here, as it is ok even if link->flags |
545 | * is outdated, and checking the counter causes a deadlock. */ | |
d24bf1b5 YW |
546 | if (FLAGS_SET(link->flags, IFF_UP)) { |
547 | /* link must be down when joining to bond master. */ | |
112a0972 | 548 | r = link_down(link); |
d24bf1b5 YW |
549 | if (r < 0) { |
550 | link_enter_failed(link); | |
551 | return false; | |
552 | } | |
553 | } | |
554 | } else if (link->network->bridge) { | |
555 | if (!netdev_is_ready(link->network->bridge)) | |
556 | return false; | |
557 | m = link->network->bridge->ifindex; | |
558 | } else if (link->network->vrf) { | |
559 | if (!netdev_is_ready(link->network->vrf)) | |
560 | return false; | |
561 | m = link->network->vrf->ifindex; | |
562 | } | |
563 | ||
564 | req->userdata = UINT32_TO_PTR(m); | |
565 | break; | |
566 | } | |
567 | default: | |
568 | break; | |
569 | } | |
570 | ||
0fa8ee6c YW |
571 | return true; |
572 | } | |
573 | ||
574 | int request_process_set_link(Request *req) { | |
9b682672 | 575 | SetLinkOperation op; |
0fa8ee6c YW |
576 | int r; |
577 | ||
578 | assert(req); | |
579 | assert(req->link); | |
580 | assert(req->type == REQUEST_TYPE_SET_LINK); | |
0fa8ee6c YW |
581 | assert(req->netlink_handler); |
582 | ||
9b682672 YW |
583 | op = PTR_TO_INT(req->set_link_operation_ptr); |
584 | ||
585 | assert(op >= 0 && op < _SET_LINK_OPERATION_MAX); | |
586 | ||
0fa8ee6c YW |
587 | if (!link_is_ready_to_call_set_link(req)) |
588 | return 0; | |
589 | ||
9b682672 | 590 | r = link_configure(req->link, op, req->userdata, req->netlink_handler); |
0fa8ee6c YW |
591 | if (r < 0) |
592 | return log_link_error_errno(req->link, r, "Failed to set %s: %m", | |
9b682672 | 593 | set_link_operation_to_string(op)); |
0fa8ee6c | 594 | |
9b682672 | 595 | if (op == SET_LINK_FLAGS) |
baa95d22 YW |
596 | req->link->set_flags_messages++; |
597 | ||
0fa8ee6c YW |
598 | return 1; |
599 | } | |
600 | ||
601 | static int link_request_set_link( | |
602 | Link *link, | |
603 | SetLinkOperation op, | |
604 | link_netlink_message_handler_t netlink_handler, | |
605 | Request **ret) { | |
606 | ||
607 | Request *req; | |
608 | int r; | |
609 | ||
610 | assert(link); | |
611 | assert(op >= 0 && op < _SET_LINK_OPERATION_MAX); | |
612 | assert(netlink_handler); | |
613 | ||
614 | r = link_queue_request(link, REQUEST_TYPE_SET_LINK, INT_TO_PTR(op), false, | |
615 | &link->set_link_messages, netlink_handler, &req); | |
616 | if (r < 0) | |
617 | return log_link_error_errno(link, r, "Failed to request to set %s: %m", | |
618 | set_link_operation_to_string(op)); | |
619 | ||
620 | log_link_debug(link, "Requested to set %s", set_link_operation_to_string(op)); | |
621 | ||
622 | if (ret) | |
623 | *ret = req; | |
624 | return 0; | |
625 | } | |
626 | ||
8e00e24c YW |
627 | int link_request_to_set_addrgen_mode(Link *link) { |
628 | Request *req; | |
629 | uint8_t mode; | |
630 | int r; | |
631 | ||
632 | assert(link); | |
633 | assert(link->network); | |
634 | ||
635 | if (!socket_ipv6_is_supported()) | |
636 | return 0; | |
637 | ||
638 | if (!link_ipv6ll_enabled(link)) | |
639 | mode = IN6_ADDR_GEN_MODE_NONE; | |
640 | else if (link->network->ipv6ll_address_gen_mode >= 0) | |
641 | mode = link->network->ipv6ll_address_gen_mode; | |
9e1432d5 YW |
642 | else if (in6_addr_is_set(&link->network->ipv6ll_stable_secret)) |
643 | mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; | |
644 | else | |
645 | mode = IN6_ADDR_GEN_MODE_EUI64; | |
8e00e24c YW |
646 | |
647 | r = link_request_set_link(link, SET_LINK_ADDRESS_GENERATION_MODE, link_set_addrgen_mode_handler, &req); | |
648 | if (r < 0) | |
649 | return r; | |
650 | ||
651 | req->userdata = UINT8_TO_PTR(mode); | |
652 | return 0; | |
653 | } | |
654 | ||
5062b859 YW |
655 | int link_request_to_set_bond(Link *link) { |
656 | assert(link); | |
657 | assert(link->network); | |
658 | ||
659 | if (!link->network->bond) | |
660 | return 0; | |
661 | ||
662 | return link_request_set_link(link, SET_LINK_BOND, link_set_bond_handler, NULL); | |
663 | } | |
664 | ||
7d5b232f YW |
665 | int link_request_to_set_bridge(Link *link) { |
666 | assert(link); | |
667 | assert(link->network); | |
668 | ||
669 | if (!link->network->bridge) | |
670 | return 0; | |
671 | ||
672 | return link_request_set_link(link, SET_LINK_BRIDGE, link_set_bridge_handler, NULL); | |
673 | } | |
674 | ||
8252fb44 YW |
675 | int link_request_to_set_bridge_vlan(Link *link) { |
676 | assert(link); | |
677 | assert(link->network); | |
678 | ||
679 | if (!link->network->use_br_vlan) | |
680 | return 0; | |
681 | ||
682 | if (!link->network->bridge && !streq_ptr(link->kind, "bridge")) | |
683 | return 0; | |
684 | ||
685 | return link_request_set_link(link, SET_LINK_BRIDGE_VLAN, link_set_bridge_vlan_handler, NULL); | |
686 | } | |
687 | ||
7558f9e7 YW |
688 | int link_request_to_set_can(Link *link) { |
689 | assert(link); | |
690 | assert(link->network); | |
691 | ||
692 | if (link->iftype != ARPHRD_CAN) | |
693 | return 0; | |
694 | ||
695 | if (!streq_ptr(link->kind, "can")) | |
696 | return 0; | |
697 | ||
698 | return link_request_set_link(link, SET_LINK_CAN, link_set_can_handler, NULL); | |
699 | } | |
700 | ||
93fabc10 YW |
701 | int link_request_to_set_flags(Link *link) { |
702 | assert(link); | |
703 | assert(link->network); | |
704 | ||
705 | if (link->network->arp < 0 && | |
706 | link->network->multicast < 0 && | |
707 | link->network->allmulticast < 0 && | |
708 | link->network->promiscuous < 0) | |
709 | return 0; | |
710 | ||
711 | return link_request_set_link(link, SET_LINK_FLAGS, link_set_flags_handler, NULL); | |
712 | } | |
713 | ||
cc4c8fb1 YW |
714 | int link_request_to_set_group(Link *link) { |
715 | assert(link); | |
716 | assert(link->network); | |
717 | ||
718 | if (!link->network->group_set) | |
719 | return 0; | |
720 | ||
721 | return link_request_set_link(link, SET_LINK_GROUP, link_set_group_handler, NULL); | |
722 | } | |
723 | ||
d05c332c | 724 | int link_request_to_set_mac(Link *link, bool allow_retry) { |
a8e5e27c YW |
725 | assert(link); |
726 | assert(link->network); | |
727 | ||
728 | if (!link->network->mac) | |
729 | return 0; | |
730 | ||
5388e103 YW |
731 | if (link->hw_addr.length != sizeof(struct ether_addr)) { |
732 | /* Note that for now we only support changing hardware addresses on Ethernet. */ | |
733 | log_link_debug(link, "Size of the hardware address (%zu) does not match the size of MAC address (%zu), ignoring.", | |
734 | link->hw_addr.length, sizeof(struct ether_addr)); | |
735 | return 0; | |
736 | } | |
737 | ||
738 | if (ether_addr_equal(&link->hw_addr.ether, link->network->mac)) | |
739 | return 0; | |
740 | ||
d05c332c YW |
741 | return link_request_set_link(link, SET_LINK_MAC, |
742 | allow_retry ? link_set_mac_allow_retry_handler : link_set_mac_handler, | |
743 | NULL); | |
a8e5e27c YW |
744 | } |
745 | ||
d24bf1b5 YW |
746 | int link_request_to_set_master(Link *link) { |
747 | assert(link); | |
748 | ||
440d40dc YW |
749 | link->master_set = false; |
750 | ||
d24bf1b5 YW |
751 | return link_request_set_link(link, SET_LINK_MASTER, link_set_master_handler, NULL); |
752 | } | |
753 | ||
0fa8ee6c | 754 | int link_request_to_set_mtu(Link *link, uint32_t mtu) { |
59ca71a9 | 755 | Request *req; |
717ba5fc YW |
756 | const char *origin; |
757 | uint32_t min_mtu; | |
0fa8ee6c YW |
758 | int r; |
759 | ||
760 | assert(link); | |
717ba5fc YW |
761 | assert(link->network); |
762 | ||
763 | min_mtu = link->min_mtu; | |
764 | origin = "the minimum MTU of the interface"; | |
765 | if (link_ipv6_enabled(link)) { | |
766 | /* IPv6 protocol requires a minimum MTU of IPV6_MTU_MIN(1280) bytes on the interface. Bump up | |
767 | * MTU bytes to IPV6_MTU_MIN. */ | |
768 | if (min_mtu < IPV6_MIN_MTU) { | |
769 | min_mtu = IPV6_MIN_MTU; | |
770 | origin = "the minimum IPv6 MTU"; | |
771 | } | |
772 | if (min_mtu < link->network->ipv6_mtu) { | |
773 | min_mtu = link->network->ipv6_mtu; | |
774 | origin = "the requested IPv6 MTU in IPv6MTUBytes="; | |
775 | } | |
776 | } | |
777 | ||
778 | if (mtu < min_mtu) { | |
779 | log_link_warning(link, "Bumping the requested MTU %"PRIu32" to %s (%"PRIu32")", | |
780 | mtu, origin, min_mtu); | |
781 | mtu = min_mtu; | |
782 | } | |
0fa8ee6c | 783 | |
717ba5fc YW |
784 | if (mtu > link->max_mtu) { |
785 | log_link_warning(link, "Reducing the requested MTU %"PRIu32" to the interface's maximum MTU %"PRIu32".", | |
786 | mtu, link->max_mtu); | |
787 | mtu = link->max_mtu; | |
0fa8ee6c YW |
788 | } |
789 | ||
790 | if (link->mtu == mtu) | |
791 | return 0; | |
792 | ||
793 | r = link_request_set_link(link, SET_LINK_MTU, link_set_mtu_handler, &req); | |
794 | if (r < 0) | |
795 | return r; | |
796 | ||
797 | req->userdata = UINT32_TO_PTR(mtu); | |
798 | return 0; | |
799 | } | |
800 | ||
801 | static bool link_reduces_vlan_mtu(Link *link) { | |
802 | /* See netif_reduces_vlan_mtu() in kernel. */ | |
803 | return streq_ptr(link->kind, "macsec"); | |
804 | } | |
805 | ||
806 | static uint32_t link_get_requested_mtu_by_stacked_netdevs(Link *link) { | |
807 | uint32_t mtu = 0; | |
808 | NetDev *dev; | |
809 | ||
810 | HASHMAP_FOREACH(dev, link->network->stacked_netdevs) | |
811 | if (dev->kind == NETDEV_KIND_VLAN && dev->mtu > 0) | |
812 | /* See vlan_dev_change_mtu() in kernel. */ | |
813 | mtu = MAX(mtu, link_reduces_vlan_mtu(link) ? dev->mtu + 4 : dev->mtu); | |
814 | ||
815 | else if (dev->kind == NETDEV_KIND_MACVLAN && dev->mtu > mtu) | |
816 | /* See macvlan_change_mtu() in kernel. */ | |
817 | mtu = dev->mtu; | |
818 | ||
819 | return mtu; | |
820 | } | |
821 | ||
822 | int link_configure_mtu(Link *link) { | |
823 | uint32_t mtu; | |
824 | ||
825 | assert(link); | |
826 | assert(link->network); | |
827 | ||
828 | if (link->network->mtu > 0) | |
829 | return link_request_to_set_mtu(link, link->network->mtu); | |
830 | ||
831 | mtu = link_get_requested_mtu_by_stacked_netdevs(link); | |
832 | if (link->mtu >= mtu) | |
833 | return 0; | |
834 | ||
835 | log_link_notice(link, "Bumping MTU bytes from %"PRIu32" to %"PRIu32" because of stacked device. " | |
836 | "If it is not desired, then please explicitly specify MTUBytes= setting.", | |
837 | link->mtu, mtu); | |
838 | ||
839 | return link_request_to_set_mtu(link, mtu); | |
840 | } | |
112a0972 YW |
841 | |
842 | static int link_up_or_down_handler_internal(sd_netlink *rtnl, sd_netlink_message *m, Link *link, bool up, bool check_ready) { | |
843 | int r; | |
844 | ||
845 | assert(m); | |
846 | assert(link); | |
847 | ||
848 | if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) | |
baa95d22 | 849 | goto on_error; |
112a0972 YW |
850 | |
851 | r = sd_netlink_message_get_errno(m); | |
852 | if (r < 0) | |
853 | log_link_message_warning_errno(link, m, r, up ? | |
854 | "Could not bring up interface, ignoring" : | |
855 | "Could not bring down interface, ignoring"); | |
856 | ||
baa95d22 YW |
857 | r = link_call_getlink(link, get_link_update_flag_handler); |
858 | if (r < 0) { | |
859 | link_enter_failed(link); | |
860 | goto on_error; | |
861 | } | |
862 | ||
112a0972 YW |
863 | if (check_ready) { |
864 | link->activated = true; | |
865 | link_check_ready(link); | |
866 | } | |
867 | ||
baa95d22 YW |
868 | return 1; |
869 | ||
870 | on_error: | |
871 | assert(link->set_flags_messages > 0); | |
872 | link->set_flags_messages--; | |
873 | ||
112a0972 YW |
874 | return 0; |
875 | } | |
876 | ||
877 | static int link_activate_up_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
878 | return link_up_or_down_handler_internal(rtnl, m, link, true, true); | |
879 | } | |
880 | ||
881 | static int link_activate_down_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
882 | return link_up_or_down_handler_internal(rtnl, m, link, false, true); | |
883 | } | |
884 | ||
885 | static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
886 | return link_up_or_down_handler_internal(rtnl, m, link, true, false); | |
887 | } | |
888 | ||
889 | static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) { | |
890 | return link_up_or_down_handler_internal(rtnl, m, link, false, false); | |
891 | } | |
892 | ||
68f52063 YW |
893 | static const char *up_or_down(bool up) { |
894 | return up ? "up" : "down"; | |
895 | } | |
896 | ||
112a0972 YW |
897 | static int link_up_or_down(Link *link, bool up, link_netlink_message_handler_t callback) { |
898 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; | |
899 | int r; | |
900 | ||
901 | assert(link); | |
902 | assert(link->manager); | |
903 | assert(link->manager->rtnl); | |
904 | assert(callback); | |
905 | ||
68f52063 | 906 | log_link_debug(link, "Bringing link %s", up_or_down(up)); |
112a0972 YW |
907 | |
908 | r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex); | |
909 | if (r < 0) | |
910 | return log_link_debug_errno(link, r, "Could not allocate RTM_SETLINK message: %m"); | |
911 | ||
912 | r = sd_rtnl_message_link_set_flags(req, up ? IFF_UP : 0, IFF_UP); | |
913 | if (r < 0) | |
914 | return log_link_debug_errno(link, r, "Could not set link flags: %m"); | |
915 | ||
916 | r = netlink_call_async(link->manager->rtnl, NULL, req, callback, | |
917 | link_netlink_destroy_callback, link); | |
918 | if (r < 0) | |
919 | return log_link_debug_errno(link, r, "Could not send rtnetlink message: %m"); | |
920 | ||
921 | link_ref(link); | |
922 | ||
923 | return 0; | |
924 | } | |
925 | ||
112a0972 | 926 | int link_down(Link *link) { |
7149bde4 YW |
927 | int r; |
928 | ||
929 | assert(link); | |
930 | ||
931 | r = link_up_or_down(link, false, link_down_handler); | |
932 | if (r < 0) | |
933 | return log_link_error_errno(link, r, "Failed to bring down interface: %m"); | |
934 | ||
935 | link->set_flags_messages++; | |
936 | return 0; | |
112a0972 YW |
937 | } |
938 | ||
939 | static bool link_is_ready_to_activate(Link *link) { | |
940 | assert(link); | |
941 | ||
942 | if (!IN_SET(link->state, LINK_STATE_INITIALIZED, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) | |
943 | return false; | |
944 | ||
945 | if (link->set_link_messages > 0) | |
946 | return false; | |
947 | ||
948 | return true; | |
949 | } | |
950 | ||
951 | int request_process_activation(Request *req) { | |
952 | Link *link; | |
953 | bool up; | |
954 | int r; | |
955 | ||
956 | assert(req); | |
957 | assert(req->link); | |
958 | assert(req->type == REQUEST_TYPE_ACTIVATE_LINK); | |
959 | assert(req->netlink_handler); | |
960 | ||
961 | link = req->link; | |
962 | up = PTR_TO_INT(req->userdata); | |
963 | ||
964 | if (!link_is_ready_to_activate(link)) | |
965 | return 0; | |
966 | ||
967 | r = link_up_or_down(link, up, req->netlink_handler); | |
968 | if (r < 0) | |
68f52063 | 969 | return log_link_error_errno(link, r, "Failed to bring %s: %m", up_or_down(up)); |
112a0972 YW |
970 | |
971 | return 1; | |
972 | } | |
973 | ||
974 | int link_request_to_activate(Link *link) { | |
975 | Request *req; | |
976 | bool up; | |
977 | int r; | |
978 | ||
979 | assert(link); | |
980 | assert(link->network); | |
981 | ||
982 | switch (link->network->activation_policy) { | |
983 | case ACTIVATION_POLICY_BOUND: | |
112a0972 YW |
984 | r = link_handle_bound_to_list(link); |
985 | if (r < 0) | |
986 | return r; | |
987 | _fallthrough_; | |
988 | case ACTIVATION_POLICY_MANUAL: | |
989 | link->activated = true; | |
990 | link_check_ready(link); | |
991 | return 0; | |
992 | case ACTIVATION_POLICY_UP: | |
993 | case ACTIVATION_POLICY_ALWAYS_UP: | |
994 | up = true; | |
995 | break; | |
996 | case ACTIVATION_POLICY_DOWN: | |
997 | case ACTIVATION_POLICY_ALWAYS_DOWN: | |
998 | up = false; | |
999 | break; | |
1000 | default: | |
1001 | assert_not_reached("invalid activation policy"); | |
1002 | } | |
1003 | ||
1004 | link->activated = false; | |
1005 | ||
baa95d22 | 1006 | r = link_queue_request(link, REQUEST_TYPE_ACTIVATE_LINK, NULL, false, &link->set_flags_messages, |
112a0972 YW |
1007 | up ? link_activate_up_handler : link_activate_down_handler, &req); |
1008 | if (r < 0) | |
1009 | return log_link_error_errno(link, r, "Failed to request to activate link: %m"); | |
1010 | ||
1011 | req->userdata = INT_TO_PTR(up); | |
1012 | ||
1013 | log_link_debug(link, "Requested to activate link"); | |
1014 | return 0; | |
1015 | } | |
68f52063 YW |
1016 | |
1017 | static bool link_is_ready_to_bring_up_or_down(Link *link) { | |
1018 | assert(link); | |
1019 | ||
1020 | if (link->state == LINK_STATE_UNMANAGED) | |
1021 | return true; | |
1022 | ||
1023 | if (!IN_SET(link->state, LINK_STATE_CONFIGURING, LINK_STATE_CONFIGURED)) | |
1024 | return false; | |
1025 | ||
1026 | if (link->set_link_messages > 0) | |
1027 | return false; | |
1028 | ||
1029 | if (!link->activated) | |
1030 | return false; | |
1031 | ||
1032 | return true; | |
1033 | } | |
1034 | ||
1035 | int request_process_link_up_or_down(Request *req) { | |
1036 | Link *link; | |
1037 | bool up; | |
1038 | int r; | |
1039 | ||
1040 | assert(req); | |
1041 | assert(req->link); | |
1042 | assert(req->type == REQUEST_TYPE_UP_DOWN); | |
1043 | ||
1044 | link = req->link; | |
1045 | up = PTR_TO_INT(req->userdata); | |
1046 | ||
1047 | if (!link_is_ready_to_bring_up_or_down(link)) | |
1048 | return 0; | |
1049 | ||
1050 | r = link_up_or_down(link, up, req->netlink_handler); | |
1051 | if (r < 0) | |
1052 | return log_link_error_errno(link, r, "Failed to bring %s: %m", up_or_down(up)); | |
1053 | ||
1054 | return 1; | |
1055 | } | |
1056 | ||
1057 | int link_request_to_bring_up_or_down(Link *link, bool up) { | |
1058 | Request *req; | |
1059 | int r; | |
1060 | ||
1061 | assert(link); | |
1062 | ||
baa95d22 | 1063 | r = link_queue_request(link, REQUEST_TYPE_UP_DOWN, NULL, false, &link->set_flags_messages, |
68f52063 YW |
1064 | up ? link_up_handler : link_down_handler, &req); |
1065 | if (r < 0) | |
1066 | return log_link_error_errno(link, r, "Failed to request to bring %s link: %m", | |
1067 | up_or_down(up)); | |
1068 | ||
1069 | req->userdata = INT_TO_PTR(up); | |
1070 | ||
1071 | log_link_debug(link, "Requested to bring link %s", up_or_down(up)); | |
1072 | return 0; | |
1073 | } |