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_cleanup(iface
, false);
270 netifd_ubus_remove_interface(iface
);
271 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
276 interface_do_reload(struct interface
*iface
)
278 interface_cleanup(iface
, true);
279 proto_init_interface(iface
, iface
->config
);
280 interface_claim_device(iface
);
284 interface_handle_config_change(struct interface
*iface
)
286 switch(iface
->config_state
) {
290 interface_do_reload(iface
);
293 interface_do_free(iface
);
296 if (iface
->autostart
&& iface
->available
)
297 interface_set_up(iface
);
301 interface_proto_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
303 struct interface
*iface
= state
->iface
;
307 if (iface
->state
!= IFS_SETUP
)
310 interface_ip_set_enabled(&iface
->config_ip
, true);
311 system_flush_routes();
312 iface
->state
= IFS_UP
;
313 iface
->start_time
= system_get_rtime();
314 interface_event(iface
, IFEV_UP
);
315 interface_write_resolv_conf();
316 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
319 if (iface
->state
== IFS_DOWN
)
322 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
323 mark_interface_down(iface
);
324 interface_handle_config_change(iface
);
326 case IFPEV_LINK_LOST
:
327 if (iface
->state
!= IFS_UP
)
330 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
331 mark_interface_down(iface
);
332 iface
->state
= IFS_SETUP
;
337 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
340 iface
->proto
->free(iface
->proto
);
343 iface
->state
= IFS_DOWN
;
344 iface
->proto
= state
;
348 state
->proto_event
= interface_proto_cb
;
349 state
->iface
= iface
;
353 interface_init(struct interface
*iface
, const char *name
,
354 struct blob_attr
*config
)
356 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
357 struct blob_attr
*cur
;
358 const char *proto_name
= NULL
;
360 strncpy(iface
->name
, name
, sizeof(iface
->name
) - 1);
361 INIT_LIST_HEAD(&iface
->errors
);
362 INIT_LIST_HEAD(&iface
->users
);
363 INIT_LIST_HEAD(&iface
->hotplug_list
);
364 interface_ip_init(iface
);
365 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
366 iface
->config_ip
.enabled
= false;
368 iface
->main_dev
.cb
= interface_cb
;
370 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
371 blob_data(config
), blob_len(config
));
373 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
374 proto_name
= blobmsg_data(cur
);
376 proto_attach_interface(iface
, proto_name
);
378 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
379 iface
->proto_ip
.no_defaultroute
=
380 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
382 iface
->config_autostart
= iface
->autostart
;
386 interface_add(struct interface
*iface
, struct blob_attr
*config
)
388 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
389 struct blob_attr
*cur
;
391 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
392 blob_data(config
), blob_len(config
));
394 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
395 iface
->ifname
= blobmsg_data(cur
);
397 iface
->config
= config
;
398 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
402 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
404 bool enabled
= iface
->config_ip
.enabled
;
405 bool claimed
= iface
->l3_dev
.claimed
;
407 if (iface
->l3_dev
.dev
== dev
)
410 interface_ip_set_enabled(&iface
->config_ip
, false);
411 interface_ip_flush(&iface
->proto_ip
);
412 device_add_user(&iface
->l3_dev
, dev
);
416 device_claim(&iface
->l3_dev
);
417 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
422 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
424 bool set_l3
= (iface
->main_dev
.dev
== iface
->l3_dev
.dev
);
425 bool claimed
= iface
->l3_dev
.claimed
;
427 if (iface
->main_dev
.dev
== dev
)
431 interface_set_l3_dev(iface
, dev
);
433 device_add_user(&iface
->main_dev
, dev
);
435 device_claim(&iface
->l3_dev
);
437 if (!iface
->l3_dev
.dev
)
438 interface_set_l3_dev(iface
, dev
);
442 interface_remove_link(struct interface
*iface
, struct device
*dev
)
444 struct device
*mdev
= iface
->main_dev
.dev
;
446 if (mdev
&& mdev
->hotplug_ops
)
447 return mdev
->hotplug_ops
->del(mdev
, dev
);
449 if (!iface
->main_dev
.hotplug
)
450 return UBUS_STATUS_INVALID_ARGUMENT
;
452 if (dev
!= iface
->main_dev
.dev
)
453 return UBUS_STATUS_INVALID_ARGUMENT
;
455 device_remove_user(&iface
->main_dev
);
460 interface_add_link(struct interface
*iface
, struct device
*dev
)
462 struct device
*mdev
= iface
->main_dev
.dev
;
467 if (iface
->main_dev
.hotplug
)
468 device_remove_user(&iface
->main_dev
);
471 if (mdev
->hotplug_ops
)
472 return mdev
->hotplug_ops
->add(mdev
, dev
);
474 return UBUS_STATUS_NOT_SUPPORTED
;
477 interface_set_main_dev(iface
, dev
);
478 iface
->main_dev
.hotplug
= true;
483 interface_set_up(struct interface
*iface
)
487 iface
->autostart
= true;
489 if (iface
->state
!= IFS_DOWN
)
492 interface_clear_errors(iface
);
493 if (!iface
->available
) {
494 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
498 if (iface
->main_dev
.dev
) {
499 ret
= device_claim(&iface
->main_dev
);
504 iface
->state
= IFS_SETUP
;
505 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
507 mark_interface_down(iface
);
515 interface_set_down(struct interface
*iface
)
518 vlist_for_each_element(&interfaces
, iface
, node
)
519 __interface_set_down(iface
, false);
521 iface
->autostart
= false;
522 __interface_set_down(iface
, false);
529 interface_start_pending(void)
531 struct interface
*iface
;
533 vlist_for_each_element(&interfaces
, iface
, node
) {
534 if (iface
->available
&& iface
->autostart
)
535 interface_set_up(iface
);
540 set_config_state(struct interface
*iface
, enum interface_config_state s
)
542 iface
->config_state
= s
;
543 if (iface
->state
== IFS_DOWN
)
544 interface_handle_config_change(iface
);
546 __interface_set_down(iface
, false);
550 interface_update_start(struct interface
*iface
)
552 interface_ip_update_start(&iface
->proto_ip
);
556 interface_update_complete(struct interface
*iface
)
558 interface_ip_update_complete(&iface
->proto_ip
);
562 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
564 struct blob_attr
*old_config
= if_old
->config
;
565 const char *old_ifname
= if_old
->ifname
;
566 const struct proto_handler
*proto
= if_old
->proto_handler
;
568 interface_clear_errors(if_old
);
569 if_old
->config
= if_new
->config
;
570 if (!if_old
->config_autostart
&& if_new
->config_autostart
)
571 if_old
->autostart
= true;
573 if_old
->config_autostart
= if_new
->config_autostart
;
574 if_old
->ifname
= if_new
->ifname
;
575 if_old
->proto_handler
= if_new
->proto_handler
;
577 if ((!!old_ifname
!= !!if_new
->ifname
) ||
578 (old_ifname
&& strcmp(old_ifname
, if_new
->ifname
) != 0) ||
579 proto
!= if_new
->proto_handler
) {
580 D(INTERFACE
, "Reload interface '%s' because of ifname/proto change\n",
585 if (!proto
->config_params
)
586 D(INTERFACE
, "No config parameters for interface '%s'\n",
588 else if (!config_check_equal(old_config
, if_new
->config
,
589 proto
->config_params
)) {
590 D(INTERFACE
, "Reload interface '%s because of config changes\n",
595 #define UPDATE(field) ({ \
596 bool __changed = (if_old->field != if_new->field); \
597 if_old->field = if_new->field; \
601 if (UPDATE(metric
) || UPDATE(proto_ip
.no_defaultroute
)) {
602 interface_ip_set_enabled(&if_old
->config_ip
, false);
603 interface_ip_set_enabled(&if_old
->config_ip
, if_new
->config_ip
.enabled
);
604 interface_ip_set_enabled(&if_old
->proto_ip
, false);
605 interface_ip_set_enabled(&if_old
->proto_ip
, if_new
->proto_ip
.enabled
);
613 set_config_state(if_old
, IFC_RELOAD
);
620 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
621 struct vlist_node
*node_old
)
623 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
624 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
626 if (node_old
&& node_new
) {
627 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
628 interface_change_config(if_old
, if_new
);
629 } else if (node_old
) {
630 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
631 set_config_state(if_old
, IFC_REMOVE
);
632 } else if (node_new
) {
633 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
634 proto_init_interface(if_new
, if_new
->config
);
635 interface_claim_device(if_new
);
636 netifd_ubus_add_interface(if_new
);
642 interface_init_list(void)
644 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
645 interfaces
.keep_old
= true;
646 interfaces
.no_delete
= true;