8 #include "interface-ip.h"
14 struct vlist_tree interfaces
;
20 IFACE_ATTR_DEFAULTROUTE
,
25 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
26 [IFACE_ATTR_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
27 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
28 [IFACE_ATTR_AUTO
] = { .name
= "auto", .type
= BLOBMSG_TYPE_BOOL
},
29 [IFACE_ATTR_DEFAULTROUTE
] = { .name
= "defaultroute", .type
= BLOBMSG_TYPE_BOOL
},
30 [IFACE_ATTR_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
33 const struct config_param_list interface_attr_list
= {
34 .n_params
= IFACE_ATTR_MAX
,
35 .params
= iface_attrs
,
39 interface_clear_errors(struct interface
*iface
)
41 struct interface_error
*error
, *tmp
;
43 list_for_each_entry_safe(error
, tmp
, &iface
->errors
, list
) {
44 list_del(&error
->list
);
49 void interface_add_error(struct interface
*iface
, const char *subsystem
,
50 const char *code
, const char **data
, int n_data
)
52 struct interface_error
*error
;
58 len
= n_data
* sizeof(char *);
59 datalen
= alloca(len
);
60 for (i
= 0; i
< n_data
; i
++) {
61 datalen
[i
] = strlen(data
[i
]) + 1;
66 error
= calloc(1, sizeof(*error
) + sizeof(char *) + len
);
70 list_add_tail(&error
->list
, &iface
->errors
);
71 error
->subsystem
= subsystem
;
74 dest
= (char *) &error
->data
[n_data
+ 1];
75 for (i
= 0; i
< n_data
; i
++) {
76 error
->data
[i
] = dest
;
77 memcpy(dest
, data
[i
], datalen
[i
]);
80 error
->data
[n_data
] = NULL
;
84 interface_event(struct interface
*iface
, enum interface_event ev
)
86 struct interface_user
*dep
, *tmp
;
88 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
89 dep
->cb(dep
, IFEV_UP
);
91 interface_queue_event(iface
, ev
);
95 interface_flush_state(struct interface
*iface
)
97 if (iface
->main_dev
.dev
)
98 device_release(&iface
->main_dev
);
99 if (iface
->l3_dev
.dev
)
100 device_release(&iface
->l3_dev
);
104 mark_interface_down(struct interface
*iface
)
106 if (iface
->state
== IFS_UP
)
107 interface_event(iface
, IFEV_DOWN
);
108 interface_flush_state(iface
);
109 iface
->state
= IFS_DOWN
;
113 __interface_set_down(struct interface
*iface
, bool force
)
115 interface_clear_errors(iface
);
117 if (iface
->state
== IFS_DOWN
||
118 iface
->state
== IFS_TEARDOWN
)
121 if (iface
->state
== IFS_UP
)
122 interface_event(iface
, IFEV_DOWN
);
123 iface
->state
= IFS_TEARDOWN
;
124 interface_ip_flush(&iface
->config_ip
);
125 interface_ip_flush(&iface
->proto_ip
);
126 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
128 interface_flush_state(iface
);
132 interface_cb(struct device_user
*dep
, enum device_event ev
)
134 struct interface
*iface
;
137 iface
= container_of(dep
, struct interface
, main_dev
);
142 case DEV_EVENT_REMOVE
:
149 interface_set_available(iface
, new_state
);
153 interface_set_available(struct interface
*iface
, bool new_state
)
155 if (iface
->available
== new_state
)
158 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
159 iface
->available
= new_state
;
162 if (iface
->autostart
&& !config_init
)
163 interface_set_up(iface
);
165 __interface_set_down(iface
, true);
169 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
172 list_add(&dep
->list
, &iface
->users
);
173 if (iface
->state
== IFS_UP
)
174 dep
->cb(dep
, IFEV_UP
);
178 interface_remove_user(struct interface_user
*dep
)
180 list_del_init(&dep
->list
);
185 interface_claim_device(struct interface
*iface
)
190 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
191 dev
= device_get(iface
->ifname
, true);
193 interface_set_main_dev(iface
, dev
);
195 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
196 interface_set_available(iface
, true);
201 interface_cleanup(struct interface
*iface
, bool reload
)
203 struct interface_user
*dep
, *tmp
;
205 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
206 interface_remove_user(dep
);
208 interface_ip_flush(&iface
->config_ip
);
209 interface_flush_state(iface
);
210 interface_clear_errors(iface
);
211 if (iface
->main_dev
.dev
&&
212 (!reload
|| !iface
->main_dev
.hotplug
))
213 interface_set_main_dev(iface
, NULL
);
214 interface_set_proto_state(iface
, NULL
);
218 interface_do_free(struct interface
*iface
)
220 interface_cleanup(iface
, false);
222 netifd_ubus_remove_interface(iface
);
223 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
228 interface_do_reload(struct interface
*iface
)
230 interface_cleanup(iface
, true);
231 proto_init_interface(iface
, iface
->config
);
232 interface_claim_device(iface
);
236 interface_handle_config_change(struct interface
*iface
)
238 switch(iface
->config_state
) {
242 interface_do_reload(iface
);
245 interface_do_free(iface
);
248 if (iface
->autostart
&& iface
->available
)
249 interface_set_up(iface
);
253 interface_proto_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
255 struct interface
*iface
= state
->iface
;
259 if (iface
->state
!= IFS_SETUP
)
262 interface_ip_set_enabled(&iface
->config_ip
, true);
263 system_flush_routes();
264 iface
->state
= IFS_UP
;
265 iface
->start_time
= system_get_rtime();
266 interface_event(iface
, IFEV_UP
);
267 interface_write_resolv_conf();
268 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
271 if (iface
->state
== IFS_DOWN
)
274 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
275 interface_ip_set_enabled(&iface
->config_ip
, false);
276 system_flush_routes();
277 mark_interface_down(iface
);
278 interface_handle_config_change(iface
);
280 case IFPEV_LINK_LOST
:
281 if (iface
->state
!= IFS_UP
)
284 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
285 if (iface
->state
== IFS_UP
)
286 interface_event(iface
, IFEV_DOWN
);
287 iface
->state
= IFS_SETUP
;
292 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
295 iface
->proto
->free(iface
->proto
);
298 iface
->state
= IFS_DOWN
;
299 iface
->proto
= state
;
303 state
->proto_event
= interface_proto_cb
;
304 state
->iface
= iface
;
308 interface_init(struct interface
*iface
, const char *name
,
309 struct blob_attr
*config
)
311 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
312 struct blob_attr
*cur
;
313 const char *proto_name
= NULL
;
315 strncpy(iface
->name
, name
, sizeof(iface
->name
) - 1);
316 INIT_LIST_HEAD(&iface
->errors
);
317 INIT_LIST_HEAD(&iface
->users
);
318 INIT_LIST_HEAD(&iface
->hotplug_list
);
319 interface_ip_init(&iface
->proto_ip
, iface
);
320 interface_ip_init(&iface
->config_ip
, iface
);
321 iface
->config_ip
.enabled
= false;
323 iface
->main_dev
.cb
= interface_cb
;
325 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
326 blob_data(config
), blob_len(config
));
328 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
329 proto_name
= blobmsg_data(cur
);
331 proto_attach_interface(iface
, proto_name
);
333 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
334 iface
->proto_ip
.no_defaultroute
=
335 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
337 iface
->config_autostart
= iface
->autostart
;
341 interface_add(struct interface
*iface
, struct blob_attr
*config
)
343 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
344 struct blob_attr
*cur
;
346 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
347 blob_data(config
), blob_len(config
));
349 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
350 iface
->ifname
= blobmsg_data(cur
);
352 iface
->config
= config
;
353 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
357 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
359 bool enabled
= iface
->config_ip
.enabled
;
360 bool claimed
= iface
->l3_dev
.claimed
;
362 if (iface
->l3_dev
.dev
== dev
)
365 interface_ip_set_enabled(&iface
->config_ip
, false);
366 interface_ip_flush(&iface
->proto_ip
);
367 device_add_user(&iface
->l3_dev
, dev
);
371 device_claim(&iface
->l3_dev
);
372 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
377 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
379 bool set_l3
= (iface
->main_dev
.dev
== iface
->l3_dev
.dev
);
380 bool claimed
= iface
->l3_dev
.claimed
;
382 if (iface
->main_dev
.dev
== dev
)
385 device_add_user(&iface
->main_dev
, dev
);
387 interface_set_l3_dev(iface
, dev
);
390 device_claim(&iface
->l3_dev
);
392 if (!iface
->l3_dev
.dev
)
393 interface_set_l3_dev(iface
, dev
);
397 interface_remove_link(struct interface
*iface
, struct device
*dev
)
399 struct device
*mdev
= iface
->main_dev
.dev
;
401 if (mdev
&& mdev
->hotplug_ops
)
402 return mdev
->hotplug_ops
->del(mdev
, dev
);
404 if (!iface
->main_dev
.hotplug
)
405 return UBUS_STATUS_INVALID_ARGUMENT
;
407 if (dev
!= iface
->main_dev
.dev
)
408 return UBUS_STATUS_INVALID_ARGUMENT
;
410 device_remove_user(&iface
->main_dev
);
415 interface_add_link(struct interface
*iface
, struct device
*dev
)
417 struct device
*mdev
= iface
->main_dev
.dev
;
422 if (iface
->main_dev
.hotplug
)
423 device_remove_user(&iface
->main_dev
);
426 if (mdev
->hotplug_ops
)
427 return mdev
->hotplug_ops
->add(mdev
, dev
);
429 return UBUS_STATUS_NOT_SUPPORTED
;
432 interface_set_main_dev(iface
, dev
);
433 iface
->main_dev
.hotplug
= true;
438 interface_set_up(struct interface
*iface
)
442 iface
->autostart
= true;
444 if (iface
->state
!= IFS_DOWN
)
447 interface_clear_errors(iface
);
448 if (!iface
->available
) {
449 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
453 if (iface
->main_dev
.dev
) {
454 ret
= device_claim(&iface
->main_dev
);
459 iface
->state
= IFS_SETUP
;
460 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
462 mark_interface_down(iface
);
470 interface_set_down(struct interface
*iface
)
473 vlist_for_each_element(&interfaces
, iface
, node
)
474 __interface_set_down(iface
, false);
476 iface
->autostart
= false;
477 __interface_set_down(iface
, false);
484 interface_start_pending(void)
486 struct interface
*iface
;
488 vlist_for_each_element(&interfaces
, iface
, node
) {
489 if (iface
->available
&& iface
->autostart
)
490 interface_set_up(iface
);
495 set_config_state(struct interface
*iface
, enum interface_config_state s
)
497 iface
->config_state
= s
;
498 if (iface
->state
== IFS_DOWN
)
499 interface_handle_config_change(iface
);
501 __interface_set_down(iface
, false);
505 interface_update_start(struct interface
*iface
)
507 interface_ip_update_start(&iface
->proto_ip
);
511 interface_update_complete(struct interface
*iface
)
513 struct device_route
*route
;
515 interface_ip_update_complete(&iface
->proto_ip
);
516 vlist_for_each_element(&iface
->config_ip
.route
, route
, node
) {
517 if (iface
->l3_dev
.dev
) {
518 system_add_route(iface
->l3_dev
.dev
, route
);
519 route
->enabled
= true;
525 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
527 struct blob_attr
*old_config
= if_old
->config
;
528 const char *old_ifname
= if_old
->ifname
;
529 const struct proto_handler
*proto
= if_old
->proto_handler
;
531 interface_clear_errors(if_old
);
532 if_old
->config
= if_new
->config
;
533 if (!if_old
->config_autostart
&& if_new
->config_autostart
)
534 if_old
->autostart
= true;
536 if_old
->config_autostart
= if_new
->config_autostart
;
537 if_old
->ifname
= if_new
->ifname
;
538 if_old
->proto_handler
= if_new
->proto_handler
;
540 if ((!!old_ifname
!= !!if_new
->ifname
) ||
541 (old_ifname
&& strcmp(old_ifname
, if_new
->ifname
) != 0) ||
542 proto
!= if_new
->proto_handler
) {
543 D(INTERFACE
, "Reload interface '%s' because of ifname/proto change\n",
548 if (!proto
->config_params
)
549 D(INTERFACE
, "No config parameters for interface '%s'\n",
551 else if (!config_check_equal(old_config
, if_new
->config
,
552 proto
->config_params
)) {
553 D(INTERFACE
, "Reload interface '%s because of config changes\n",
558 #define UPDATE(field) ({ \
559 bool __changed = (if_old->field != if_new->field); \
560 if_old->field = if_new->field; \
564 if (UPDATE(metric
) || UPDATE(proto_ip
.no_defaultroute
)) {
565 interface_ip_set_enabled(&if_old
->config_ip
, false);
566 interface_ip_set_enabled(&if_old
->config_ip
, if_new
->config_ip
.enabled
);
567 interface_ip_set_enabled(&if_old
->proto_ip
, false);
568 interface_ip_set_enabled(&if_old
->proto_ip
, if_new
->proto_ip
.enabled
);
576 set_config_state(if_old
, IFC_RELOAD
);
583 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
584 struct vlist_node
*node_old
)
586 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
587 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
589 if (node_old
&& node_new
) {
590 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
591 interface_change_config(if_old
, if_new
);
592 } else if (node_old
) {
593 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
594 set_config_state(if_old
, IFC_REMOVE
);
595 } else if (node_new
) {
596 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
597 proto_init_interface(if_new
, if_new
->config
);
598 interface_claim_device(if_new
);
599 netifd_ubus_add_interface(if_new
);
605 interface_init_list(void)
607 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
608 interfaces
.keep_old
= true;
609 interfaces
.no_delete
= true;