8 #include "interface-ip.h"
14 struct vlist_tree interfaces
;
15 static LIST_HEAD(iface_all_users
);
21 IFACE_ATTR_DEFAULTROUTE
,
26 static const struct blobmsg_policy iface_attrs
[IFACE_ATTR_MAX
] = {
27 [IFACE_ATTR_PROTO
] = { .name
= "proto", .type
= BLOBMSG_TYPE_STRING
},
28 [IFACE_ATTR_IFNAME
] = { .name
= "ifname", .type
= BLOBMSG_TYPE_STRING
},
29 [IFACE_ATTR_AUTO
] = { .name
= "auto", .type
= BLOBMSG_TYPE_BOOL
},
30 [IFACE_ATTR_DEFAULTROUTE
] = { .name
= "defaultroute", .type
= BLOBMSG_TYPE_BOOL
},
31 [IFACE_ATTR_METRIC
] = { .name
= "metric", .type
= BLOBMSG_TYPE_INT32
},
34 const struct config_param_list interface_attr_list
= {
35 .n_params
= IFACE_ATTR_MAX
,
36 .params
= iface_attrs
,
40 interface_clear_errors(struct interface
*iface
)
42 struct interface_error
*error
, *tmp
;
44 list_for_each_entry_safe(error
, tmp
, &iface
->errors
, list
) {
45 list_del(&error
->list
);
50 void interface_add_error(struct interface
*iface
, const char *subsystem
,
51 const char *code
, const char **data
, int n_data
)
53 struct interface_error
*error
;
59 len
= n_data
* sizeof(char *);
60 datalen
= alloca(len
);
61 for (i
= 0; i
< n_data
; i
++) {
62 datalen
[i
] = strlen(data
[i
]) + 1;
67 error
= calloc(1, sizeof(*error
) + sizeof(char *) + len
);
71 list_add_tail(&error
->list
, &iface
->errors
);
72 error
->subsystem
= subsystem
;
75 dest
= (char *) &error
->data
[n_data
+ 1];
76 for (i
= 0; i
< n_data
; i
++) {
77 error
->data
[i
] = dest
;
78 memcpy(dest
, data
[i
], datalen
[i
]);
81 error
->data
[n_data
] = NULL
;
85 interface_data_del(struct interface
*iface
, struct interface_data
*data
)
87 avl_delete(&iface
->data
, &data
->node
);
92 interface_data_flush(struct interface
*iface
)
94 struct interface_data
*d
, *tmp
;
96 avl_for_each_element_safe(&iface
->data
, d
, node
, tmp
)
97 interface_data_del(iface
, d
);
101 interface_add_data(struct interface
*iface
, const struct blob_attr
*data
)
103 struct interface_data
*n
, *o
;
105 if (!blobmsg_check_attr(data
, true))
106 return UBUS_STATUS_INVALID_ARGUMENT
;
108 n
= calloc(1, sizeof(*data
) + blob_pad_len(data
));
109 memcpy(n
->data
, data
, blob_pad_len(data
));
110 n
->node
.key
= blobmsg_name(data
);
112 o
= avl_find_element(&iface
->data
, n
->node
.key
, o
, node
);
114 interface_data_del(iface
, o
);
116 avl_insert(&iface
->data
, &n
->node
);
121 interface_event(struct interface
*iface
, enum interface_event ev
)
123 struct interface_user
*dep
, *tmp
;
125 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
126 dep
->cb(dep
, iface
, ev
);
128 list_for_each_entry_safe(dep
, tmp
, &iface_all_users
, list
)
129 dep
->cb(dep
, iface
, ev
);
131 interface_queue_event(iface
, ev
);
135 interface_flush_state(struct interface
*iface
)
137 if (iface
->main_dev
.dev
)
138 device_release(&iface
->main_dev
);
139 if (iface
->l3_dev
.dev
)
140 device_release(&iface
->l3_dev
);
141 interface_data_flush(iface
);
145 mark_interface_down(struct interface
*iface
)
147 if (iface
->state
== IFS_UP
)
148 interface_event(iface
, IFEV_DOWN
);
149 interface_ip_set_enabled(&iface
->config_ip
, false);
150 interface_ip_flush(&iface
->proto_ip
);
151 interface_flush_state(iface
);
152 system_flush_routes();
153 iface
->state
= IFS_DOWN
;
157 __interface_set_down(struct interface
*iface
, bool force
)
159 interface_clear_errors(iface
);
161 if (iface
->state
== IFS_DOWN
||
162 iface
->state
== IFS_TEARDOWN
)
165 if (iface
->state
== IFS_UP
)
166 interface_event(iface
, IFEV_DOWN
);
167 iface
->state
= IFS_TEARDOWN
;
168 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
170 interface_flush_state(iface
);
174 interface_cb(struct device_user
*dep
, enum device_event ev
)
176 struct interface
*iface
;
179 iface
= container_of(dep
, struct interface
, main_dev
);
184 case DEV_EVENT_REMOVE
:
191 interface_set_available(iface
, new_state
);
195 interface_set_available(struct interface
*iface
, bool new_state
)
197 if (iface
->available
== new_state
)
200 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
201 iface
->available
= new_state
;
204 if (iface
->autostart
&& !config_init
)
205 interface_set_up(iface
);
207 __interface_set_down(iface
, true);
211 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
214 list_add(&dep
->list
, &iface_all_users
);
219 list_add(&dep
->list
, &iface
->users
);
220 if (iface
->state
== IFS_UP
)
221 dep
->cb(dep
, iface
, IFEV_UP
);
225 interface_remove_user(struct interface_user
*dep
)
227 list_del_init(&dep
->list
);
232 interface_claim_device(struct interface
*iface
)
237 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
238 dev
= device_get(iface
->ifname
, true);
240 interface_set_main_dev(iface
, dev
);
242 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
243 interface_set_available(iface
, true);
248 interface_cleanup(struct interface
*iface
, bool reload
)
250 struct interface_user
*dep
, *tmp
;
252 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
253 interface_remove_user(dep
);
255 interface_dequeue_event(iface
);
256 interface_ip_flush(&iface
->config_ip
);
257 interface_flush_state(iface
);
258 interface_clear_errors(iface
);
259 if (iface
->main_dev
.dev
&&
260 (!reload
|| !iface
->main_dev
.hotplug
))
261 interface_set_main_dev(iface
, NULL
);
262 interface_set_proto_state(iface
, NULL
);
266 interface_do_free(struct interface
*iface
)
268 interface_event(iface
, IFEV_FREE
);
269 interface_cleanup(iface
, false);
271 netifd_ubus_remove_interface(iface
);
272 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
277 interface_do_reload(struct interface
*iface
)
279 interface_cleanup(iface
, true);
280 proto_init_interface(iface
, iface
->config
);
281 interface_claim_device(iface
);
285 interface_handle_config_change(struct interface
*iface
)
287 switch(iface
->config_state
) {
291 interface_do_reload(iface
);
294 interface_do_free(iface
);
297 if (iface
->autostart
&& iface
->available
)
298 interface_set_up(iface
);
302 interface_proto_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
304 struct interface
*iface
= state
->iface
;
308 if (iface
->state
!= IFS_SETUP
)
311 interface_ip_set_enabled(&iface
->config_ip
, true);
312 system_flush_routes();
313 iface
->state
= IFS_UP
;
314 iface
->start_time
= system_get_rtime();
315 interface_event(iface
, IFEV_UP
);
316 interface_write_resolv_conf();
317 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
320 if (iface
->state
== IFS_DOWN
)
323 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
324 mark_interface_down(iface
);
325 interface_handle_config_change(iface
);
327 case IFPEV_LINK_LOST
:
328 if (iface
->state
!= IFS_UP
)
331 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
332 mark_interface_down(iface
);
333 iface
->state
= IFS_SETUP
;
338 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
341 iface
->proto
->free(iface
->proto
);
344 iface
->state
= IFS_DOWN
;
345 iface
->proto
= state
;
349 state
->proto_event
= interface_proto_cb
;
350 state
->iface
= iface
;
354 interface_init(struct interface
*iface
, const char *name
,
355 struct blob_attr
*config
)
357 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
358 struct blob_attr
*cur
;
359 const char *proto_name
= NULL
;
361 strncpy(iface
->name
, name
, sizeof(iface
->name
) - 1);
362 INIT_LIST_HEAD(&iface
->errors
);
363 INIT_LIST_HEAD(&iface
->users
);
364 INIT_LIST_HEAD(&iface
->hotplug_list
);
365 interface_ip_init(iface
);
366 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
367 iface
->config_ip
.enabled
= false;
369 iface
->main_dev
.cb
= interface_cb
;
371 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
372 blob_data(config
), blob_len(config
));
374 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
375 proto_name
= blobmsg_data(cur
);
377 proto_attach_interface(iface
, proto_name
);
379 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
380 iface
->proto_ip
.no_defaultroute
=
381 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
383 iface
->config_autostart
= iface
->autostart
;
387 interface_add(struct interface
*iface
, struct blob_attr
*config
)
389 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
390 struct blob_attr
*cur
;
392 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
393 blob_data(config
), blob_len(config
));
395 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
396 iface
->ifname
= blobmsg_data(cur
);
398 iface
->config
= config
;
399 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
403 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
405 bool enabled
= iface
->config_ip
.enabled
;
406 bool claimed
= iface
->l3_dev
.claimed
;
408 if (iface
->l3_dev
.dev
== dev
)
411 interface_ip_set_enabled(&iface
->config_ip
, false);
412 interface_ip_flush(&iface
->proto_ip
);
413 device_add_user(&iface
->l3_dev
, dev
);
417 device_claim(&iface
->l3_dev
);
418 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
423 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
425 bool set_l3
= (iface
->main_dev
.dev
== iface
->l3_dev
.dev
);
426 bool claimed
= iface
->l3_dev
.claimed
;
428 if (iface
->main_dev
.dev
== dev
)
432 interface_set_l3_dev(iface
, dev
);
434 device_add_user(&iface
->main_dev
, dev
);
436 device_claim(&iface
->l3_dev
);
438 if (!iface
->l3_dev
.dev
)
439 interface_set_l3_dev(iface
, dev
);
443 interface_remove_link(struct interface
*iface
, struct device
*dev
)
445 struct device
*mdev
= iface
->main_dev
.dev
;
447 if (mdev
&& mdev
->hotplug_ops
)
448 return mdev
->hotplug_ops
->del(mdev
, dev
);
450 if (!iface
->main_dev
.hotplug
)
451 return UBUS_STATUS_INVALID_ARGUMENT
;
453 if (dev
!= iface
->main_dev
.dev
)
454 return UBUS_STATUS_INVALID_ARGUMENT
;
456 device_remove_user(&iface
->main_dev
);
461 interface_add_link(struct interface
*iface
, struct device
*dev
)
463 struct device
*mdev
= iface
->main_dev
.dev
;
468 if (iface
->main_dev
.hotplug
)
469 device_remove_user(&iface
->main_dev
);
472 if (mdev
->hotplug_ops
)
473 return mdev
->hotplug_ops
->add(mdev
, dev
);
475 return UBUS_STATUS_NOT_SUPPORTED
;
478 interface_set_main_dev(iface
, dev
);
479 iface
->main_dev
.hotplug
= true;
484 interface_set_up(struct interface
*iface
)
488 iface
->autostart
= true;
490 if (iface
->state
!= IFS_DOWN
)
493 interface_clear_errors(iface
);
494 if (!iface
->available
) {
495 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
499 if (iface
->main_dev
.dev
) {
500 ret
= device_claim(&iface
->main_dev
);
505 iface
->state
= IFS_SETUP
;
506 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
508 mark_interface_down(iface
);
516 interface_set_down(struct interface
*iface
)
519 vlist_for_each_element(&interfaces
, iface
, node
)
520 __interface_set_down(iface
, false);
522 iface
->autostart
= false;
523 __interface_set_down(iface
, false);
530 interface_start_pending(void)
532 struct interface
*iface
;
534 vlist_for_each_element(&interfaces
, iface
, node
) {
535 if (iface
->available
&& iface
->autostart
)
536 interface_set_up(iface
);
541 set_config_state(struct interface
*iface
, enum interface_config_state s
)
543 iface
->config_state
= s
;
544 if (iface
->state
== IFS_DOWN
)
545 interface_handle_config_change(iface
);
547 __interface_set_down(iface
, false);
551 interface_update_start(struct interface
*iface
)
553 interface_ip_update_start(&iface
->proto_ip
);
557 interface_update_complete(struct interface
*iface
)
559 interface_ip_update_complete(&iface
->proto_ip
);
563 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
565 struct blob_attr
*old_config
= if_old
->config
;
566 const char *old_ifname
= if_old
->ifname
;
567 const struct proto_handler
*proto
= if_old
->proto_handler
;
569 interface_clear_errors(if_old
);
570 if_old
->config
= if_new
->config
;
571 if (!if_old
->config_autostart
&& if_new
->config_autostart
)
572 if_old
->autostart
= true;
574 if_old
->config_autostart
= if_new
->config_autostart
;
575 if_old
->ifname
= if_new
->ifname
;
576 if_old
->proto_handler
= if_new
->proto_handler
;
578 if ((!!old_ifname
!= !!if_new
->ifname
) ||
579 (old_ifname
&& strcmp(old_ifname
, if_new
->ifname
) != 0) ||
580 proto
!= if_new
->proto_handler
) {
581 D(INTERFACE
, "Reload interface '%s' because of ifname/proto change\n",
586 if (!proto
->config_params
)
587 D(INTERFACE
, "No config parameters for interface '%s'\n",
589 else if (!config_check_equal(old_config
, if_new
->config
,
590 proto
->config_params
)) {
591 D(INTERFACE
, "Reload interface '%s because of config changes\n",
596 #define UPDATE(field) ({ \
597 bool __changed = (if_old->field != if_new->field); \
598 if_old->field = if_new->field; \
602 if (UPDATE(metric
) || UPDATE(proto_ip
.no_defaultroute
)) {
603 interface_ip_set_enabled(&if_old
->config_ip
, false);
604 interface_ip_set_enabled(&if_old
->config_ip
, if_new
->config_ip
.enabled
);
605 interface_ip_set_enabled(&if_old
->proto_ip
, false);
606 interface_ip_set_enabled(&if_old
->proto_ip
, if_new
->proto_ip
.enabled
);
614 set_config_state(if_old
, IFC_RELOAD
);
621 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
622 struct vlist_node
*node_old
)
624 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
625 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
627 if (node_old
&& node_new
) {
628 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
629 interface_change_config(if_old
, if_new
);
630 } else if (node_old
) {
631 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
632 set_config_state(if_old
, IFC_REMOVE
);
633 } else if (node_new
) {
634 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
635 proto_init_interface(if_new
, if_new
->config
);
636 interface_claim_device(if_new
);
637 netifd_ubus_add_interface(if_new
);
643 interface_init_list(void)
645 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
646 interfaces
.keep_old
= true;
647 interfaces
.no_delete
= true;