8 #include "interface-ip.h"
14 struct vlist_tree interfaces
;
23 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
24 [IFACE_ATTR_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
25 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
26 [IFACE_ATTR_AUTO
] = { .name
= "auto", .type
= BLOBMSG_TYPE_BOOL
},
29 const struct config_param_list interface_attr_list
= {
30 .n_params
= IFACE_ATTR_MAX
,
31 .params
= iface_attrs
,
35 interface_clear_errors(struct interface
*iface
)
37 struct interface_error
*error
, *tmp
;
39 list_for_each_entry_safe(error
, tmp
, &iface
->errors
, list
) {
40 list_del(&error
->list
);
45 void interface_add_error(struct interface
*iface
, const char *subsystem
,
46 const char *code
, const char **data
, int n_data
)
48 struct interface_error
*error
;
54 len
= n_data
* sizeof(char *);
55 datalen
= alloca(len
);
56 for (i
= 0; i
< n_data
; i
++) {
57 datalen
[i
] = strlen(data
[i
]) + 1;
62 error
= calloc(1, sizeof(*error
) + sizeof(char *) + len
);
66 list_add_tail(&error
->list
, &iface
->errors
);
67 error
->subsystem
= subsystem
;
70 dest
= (char *) &error
->data
[n_data
+ 1];
71 for (i
= 0; i
< n_data
; i
++) {
72 error
->data
[i
] = dest
;
73 memcpy(dest
, data
[i
], datalen
[i
]);
76 error
->data
[n_data
] = NULL
;
80 interface_event(struct interface
*iface
, enum interface_event ev
)
82 struct interface_user
*dep
, *tmp
;
84 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
85 dep
->cb(dep
, IFEV_UP
);
87 interface_queue_event(iface
, ev
);
91 interface_flush_state(struct interface
*iface
)
93 interface_ip_flush(&iface
->proto_ip
);
94 if (iface
->main_dev
.dev
)
95 device_release(&iface
->main_dev
);
96 if (iface
->l3_dev
!= &iface
->main_dev
&& iface
->l3_dev
->dev
)
97 device_release(iface
->l3_dev
);
101 mark_interface_down(struct interface
*iface
)
103 interface_flush_state(iface
);
104 iface
->state
= IFS_DOWN
;
108 __interface_set_up(struct interface
*iface
)
112 if (iface
->state
!= IFS_DOWN
)
115 if (iface
->main_dev
.dev
) {
116 ret
= device_claim(&iface
->main_dev
);
121 iface
->state
= IFS_SETUP
;
122 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
124 mark_interface_down(iface
);
132 __interface_set_down(struct interface
*iface
, bool force
)
134 interface_clear_errors(iface
);
136 if (iface
->state
== IFS_DOWN
||
137 iface
->state
== IFS_TEARDOWN
)
140 iface
->state
= IFS_TEARDOWN
;
141 interface_event(iface
, IFEV_DOWN
);
142 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
144 interface_flush_state(iface
);
148 interface_cb(struct device_user
*dep
, enum device_event ev
)
150 struct interface
*iface
;
153 iface
= container_of(dep
, struct interface
, main_dev
);
158 case DEV_EVENT_REMOVE
:
165 interface_set_available(iface
, new_state
);
169 interface_set_available(struct interface
*iface
, bool new_state
)
171 if (iface
->available
== new_state
)
174 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
175 iface
->available
= new_state
;
178 if (iface
->autostart
&& !config_init
)
179 interface_set_up(iface
);
181 __interface_set_down(iface
, true);
185 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
188 list_add(&dep
->list
, &iface
->users
);
189 if (iface
->state
== IFS_UP
)
190 dep
->cb(dep
, IFEV_UP
);
194 interface_remove_user(struct interface_user
*dep
)
196 list_del_init(&dep
->list
);
201 interface_claim_device(struct interface
*iface
)
205 if (iface
->ifname
&& iface
->proto_handler
&&
206 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
207 dev
= device_get(iface
->ifname
, true);
209 device_add_user(&iface
->main_dev
, dev
);
215 interface_cleanup(struct interface
*iface
)
217 struct interface_user
*dep
, *tmp
;
219 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
220 interface_remove_user(dep
);
222 interface_ip_flush(&iface
->config_ip
);
223 interface_flush_state(iface
);
224 interface_clear_errors(iface
);
225 if (iface
->main_dev
.dev
)
226 device_remove_user(&iface
->main_dev
);
227 iface
->l3_dev
= &iface
->main_dev
;
228 interface_set_proto_state(iface
, NULL
);
232 interface_do_free(struct interface
*iface
)
234 interface_cleanup(iface
);
236 netifd_ubus_remove_interface(iface
);
237 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
242 interface_do_reload(struct interface
*iface
)
244 interface_cleanup(iface
);
246 interface_claim_device(iface
);
247 proto_init_interface(iface
, iface
->config
);
251 interface_handle_config_change(struct interface
*iface
)
253 switch(iface
->config_state
) {
257 interface_do_reload(iface
);
260 interface_do_free(iface
);
263 if (iface
->autostart
&& iface
->available
)
264 interface_set_up(iface
);
268 interface_proto_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
270 struct interface
*iface
= state
->iface
;
274 if (iface
->state
!= IFS_SETUP
)
277 interface_ip_set_enabled(&iface
->config_ip
, true);
278 system_flush_routes();
279 iface
->state
= IFS_UP
;
280 iface
->start_time
= system_get_rtime();
281 interface_event(iface
, IFEV_UP
);
282 interface_write_resolv_conf();
283 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
286 if (iface
->state
== IFS_DOWN
)
289 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
290 interface_ip_set_enabled(&iface
->config_ip
, false);
291 system_flush_routes();
292 mark_interface_down(iface
);
293 interface_handle_config_change(iface
);
295 case IFPEV_LINK_LOST
:
296 if (iface
->state
!= IFS_UP
)
299 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
300 iface
->state
= IFS_SETUP
;
301 interface_event(iface
, IFEV_DOWN
);
306 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
309 iface
->proto
->free(iface
->proto
);
312 iface
->state
= IFS_DOWN
;
313 iface
->proto
= state
;
317 state
->proto_event
= interface_proto_cb
;
318 state
->iface
= iface
;
322 interface_init(struct interface
*iface
, const char *name
,
323 struct blob_attr
*config
)
325 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
326 struct blob_attr
*cur
;
327 const char *proto_name
= NULL
;
329 strncpy(iface
->name
, name
, sizeof(iface
->name
) - 1);
330 INIT_LIST_HEAD(&iface
->errors
);
331 INIT_LIST_HEAD(&iface
->users
);
332 INIT_LIST_HEAD(&iface
->hotplug_list
);
333 interface_ip_init(&iface
->proto_ip
, iface
);
334 interface_ip_init(&iface
->config_ip
, iface
);
335 iface
->config_ip
.enabled
= false;
337 iface
->main_dev
.cb
= interface_cb
;
338 iface
->l3_dev
= &iface
->main_dev
;
340 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
341 blob_data(config
), blob_len(config
));
343 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
344 proto_name
= blobmsg_data(cur
);
346 proto_attach_interface(iface
, proto_name
);
348 if ((cur
= tb
[IFACE_ATTR_AUTO
]))
349 iface
->autostart
= blobmsg_get_bool(cur
);
351 iface
->autostart
= true;
352 iface
->config_autostart
= iface
->autostart
;
356 interface_add(struct interface
*iface
, struct blob_attr
*config
)
358 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
359 struct blob_attr
*cur
;
361 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
362 blob_data(config
), blob_len(config
));
364 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
365 iface
->ifname
= blobmsg_data(cur
);
367 iface
->config
= config
;
368 vlist_add(&interfaces
, &iface
->node
);
372 interface_remove_link(struct interface
*iface
, struct device
*dev
)
374 struct device
*mdev
= iface
->main_dev
.dev
;
376 if (mdev
&& mdev
->hotplug_ops
) {
377 mdev
->hotplug_ops
->del(mdev
, dev
);
381 device_remove_user(&iface
->main_dev
);
385 interface_add_link(struct interface
*iface
, struct device
*dev
)
387 struct device
*mdev
= iface
->main_dev
.dev
;
389 if (mdev
&& mdev
->hotplug_ops
)
390 return mdev
->hotplug_ops
->add(mdev
, dev
);
392 if (iface
->main_dev
.dev
)
393 interface_remove_link(iface
, NULL
);
395 device_add_user(&iface
->main_dev
, dev
);
401 interface_set_up(struct interface
*iface
)
403 iface
->autostart
= true;
405 if (iface
->state
!= IFS_DOWN
)
408 interface_clear_errors(iface
);
409 if (!iface
->available
) {
410 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
414 return __interface_set_up(iface
);
418 interface_set_down(struct interface
*iface
)
421 vlist_for_each_element(&interfaces
, iface
, node
)
422 __interface_set_down(iface
, false);
424 iface
->autostart
= false;
425 __interface_set_down(iface
, false);
432 interface_start_pending(void)
434 struct interface
*iface
;
436 vlist_for_each_element(&interfaces
, iface
, node
) {
437 if (iface
->available
&& iface
->autostart
)
438 interface_set_up(iface
);
443 set_config_state(struct interface
*iface
, enum interface_config_state s
)
445 iface
->config_state
= s
;
446 if (iface
->state
== IFS_DOWN
)
447 interface_handle_config_change(iface
);
449 __interface_set_down(iface
, false);
453 interface_update_start(struct interface
*iface
)
455 interface_ip_update_start(&iface
->proto_ip
);
459 interface_update_complete(struct interface
*iface
)
461 struct device_route
*route
;
463 interface_ip_update_complete(&iface
->proto_ip
);
464 vlist_for_each_element(&iface
->config_ip
.route
, route
, node
) {
465 if (iface
->l3_dev
->dev
) {
466 system_add_route(iface
->l3_dev
->dev
, route
);
467 route
->enabled
= true;
473 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
475 struct blob_attr
*old_config
= if_old
->config
;
476 const char *old_ifname
= if_old
->ifname
;
477 const struct proto_handler
*proto
= if_old
->proto_handler
;
479 interface_clear_errors(if_old
);
480 if_old
->config
= if_new
->config
;
481 if (!if_old
->config_autostart
&& if_new
->config_autostart
)
482 if_old
->autostart
= true;
484 if_old
->config_autostart
= if_new
->config_autostart
;
485 if_old
->ifname
= if_new
->ifname
;
486 if_old
->proto_handler
= if_new
->proto_handler
;
488 if (strcmp(old_ifname
, if_new
->ifname
) != 0 ||
489 proto
!= if_new
->proto_handler
) {
490 D(INTERFACE
, "Reload interface '%s' because of ifname/proto change\n",
495 if (!proto
->config_params
)
496 D(INTERFACE
, "No config parameters for interface '%s'\n",
498 else if (!config_check_equal(old_config
, if_new
->config
,
499 proto
->config_params
)) {
500 D(INTERFACE
, "Reload interface '%s because of config changes\n",
508 set_config_state(if_old
, IFC_RELOAD
);
515 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
516 struct vlist_node
*node_old
)
518 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
519 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
521 if (node_old
&& node_new
) {
522 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
523 interface_change_config(if_old
, if_new
);
524 } else if (node_old
) {
525 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
526 set_config_state(if_old
, IFC_REMOVE
);
527 } else if (node_new
) {
528 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
529 interface_claim_device(if_new
);
530 proto_init_interface(if_new
, if_new
->config
);
531 netifd_ubus_add_interface(if_new
);
537 interface_init_list(void)
539 vlist_init(&interfaces
, avl_strcmp
, interface_update
,
540 struct interface
, node
, name
);
541 interfaces
.keep_old
= true;
542 interfaces
.no_delete
= true;