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_data_del(struct interface
*iface
, struct interface_data
*data
)
86 avl_delete(&iface
->data
, &data
->node
);
91 interface_data_flush(struct interface
*iface
)
93 struct interface_data
*d
, *tmp
;
95 avl_for_each_element_safe(&iface
->data
, d
, node
, tmp
)
96 interface_data_del(iface
, d
);
100 interface_add_data(struct interface
*iface
, const struct blob_attr
*data
)
102 struct interface_data
*n
, *o
;
104 if (!blobmsg_check_attr(data
, true))
105 return UBUS_STATUS_INVALID_ARGUMENT
;
107 n
= calloc(1, sizeof(*data
) + blob_pad_len(data
));
108 memcpy(n
->data
, data
, blob_pad_len(data
));
109 n
->node
.key
= blobmsg_name(data
);
111 o
= avl_find_element(&iface
->data
, n
->node
.key
, o
, node
);
113 interface_data_del(iface
, o
);
115 avl_insert(&iface
->data
, &n
->node
);
120 interface_event(struct interface
*iface
, enum interface_event ev
)
122 struct interface_user
*dep
, *tmp
;
124 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
125 dep
->cb(dep
, IFEV_UP
);
127 interface_queue_event(iface
, ev
);
131 interface_flush_state(struct interface
*iface
)
133 if (iface
->main_dev
.dev
)
134 device_release(&iface
->main_dev
);
135 if (iface
->l3_dev
.dev
)
136 device_release(&iface
->l3_dev
);
137 interface_data_flush(iface
);
141 mark_interface_down(struct interface
*iface
)
143 if (iface
->state
== IFS_UP
)
144 interface_event(iface
, IFEV_DOWN
);
145 interface_flush_state(iface
);
146 iface
->state
= IFS_DOWN
;
150 __interface_set_down(struct interface
*iface
, bool force
)
152 interface_clear_errors(iface
);
154 if (iface
->state
== IFS_DOWN
||
155 iface
->state
== IFS_TEARDOWN
)
158 if (iface
->state
== IFS_UP
)
159 interface_event(iface
, IFEV_DOWN
);
160 iface
->state
= IFS_TEARDOWN
;
161 interface_ip_flush(&iface
->config_ip
);
162 interface_ip_flush(&iface
->proto_ip
);
163 interface_proto_event(iface
->proto
, PROTO_CMD_TEARDOWN
, force
);
165 interface_flush_state(iface
);
169 interface_cb(struct device_user
*dep
, enum device_event ev
)
171 struct interface
*iface
;
174 iface
= container_of(dep
, struct interface
, main_dev
);
179 case DEV_EVENT_REMOVE
:
186 interface_set_available(iface
, new_state
);
190 interface_set_available(struct interface
*iface
, bool new_state
)
192 if (iface
->available
== new_state
)
195 D(INTERFACE
, "Interface '%s', available=%d\n", iface
->name
, new_state
);
196 iface
->available
= new_state
;
199 if (iface
->autostart
&& !config_init
)
200 interface_set_up(iface
);
202 __interface_set_down(iface
, true);
206 interface_add_user(struct interface_user
*dep
, struct interface
*iface
)
209 list_add(&dep
->list
, &iface
->users
);
210 if (iface
->state
== IFS_UP
)
211 dep
->cb(dep
, IFEV_UP
);
215 interface_remove_user(struct interface_user
*dep
)
217 list_del_init(&dep
->list
);
222 interface_claim_device(struct interface
*iface
)
227 !(iface
->proto_handler
->flags
& PROTO_FLAG_NODEV
)) {
228 dev
= device_get(iface
->ifname
, true);
230 interface_set_main_dev(iface
, dev
);
232 if (iface
->proto_handler
->flags
& PROTO_FLAG_INIT_AVAILABLE
)
233 interface_set_available(iface
, true);
238 interface_cleanup(struct interface
*iface
, bool reload
)
240 struct interface_user
*dep
, *tmp
;
242 list_for_each_entry_safe(dep
, tmp
, &iface
->users
, list
)
243 interface_remove_user(dep
);
245 interface_dequeue_event(iface
);
246 interface_ip_flush(&iface
->config_ip
);
247 interface_flush_state(iface
);
248 interface_clear_errors(iface
);
249 if (iface
->main_dev
.dev
&&
250 (!reload
|| !iface
->main_dev
.hotplug
))
251 interface_set_main_dev(iface
, NULL
);
252 interface_set_proto_state(iface
, NULL
);
256 interface_do_free(struct interface
*iface
)
258 interface_cleanup(iface
, false);
260 netifd_ubus_remove_interface(iface
);
261 avl_delete(&interfaces
.avl
, &iface
->node
.avl
);
266 interface_do_reload(struct interface
*iface
)
268 interface_cleanup(iface
, true);
269 proto_init_interface(iface
, iface
->config
);
270 interface_claim_device(iface
);
274 interface_handle_config_change(struct interface
*iface
)
276 switch(iface
->config_state
) {
280 interface_do_reload(iface
);
283 interface_do_free(iface
);
286 if (iface
->autostart
&& iface
->available
)
287 interface_set_up(iface
);
291 interface_proto_cb(struct interface_proto_state
*state
, enum interface_proto_event ev
)
293 struct interface
*iface
= state
->iface
;
297 if (iface
->state
!= IFS_SETUP
)
300 interface_ip_set_enabled(&iface
->config_ip
, true);
301 system_flush_routes();
302 iface
->state
= IFS_UP
;
303 iface
->start_time
= system_get_rtime();
304 interface_event(iface
, IFEV_UP
);
305 interface_write_resolv_conf();
306 netifd_log_message(L_NOTICE
, "Interface '%s' is now up\n", iface
->name
);
309 if (iface
->state
== IFS_DOWN
)
312 netifd_log_message(L_NOTICE
, "Interface '%s' is now down\n", iface
->name
);
313 interface_ip_set_enabled(&iface
->config_ip
, false);
314 system_flush_routes();
315 mark_interface_down(iface
);
316 interface_handle_config_change(iface
);
318 case IFPEV_LINK_LOST
:
319 if (iface
->state
!= IFS_UP
)
322 netifd_log_message(L_NOTICE
, "Interface '%s' has lost the connection\n", iface
->name
);
323 if (iface
->state
== IFS_UP
)
324 interface_event(iface
, IFEV_DOWN
);
325 iface
->state
= IFS_SETUP
;
330 void interface_set_proto_state(struct interface
*iface
, struct interface_proto_state
*state
)
333 iface
->proto
->free(iface
->proto
);
336 iface
->state
= IFS_DOWN
;
337 iface
->proto
= state
;
341 state
->proto_event
= interface_proto_cb
;
342 state
->iface
= iface
;
346 interface_init(struct interface
*iface
, const char *name
,
347 struct blob_attr
*config
)
349 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
350 struct blob_attr
*cur
;
351 const char *proto_name
= NULL
;
353 strncpy(iface
->name
, name
, sizeof(iface
->name
) - 1);
354 INIT_LIST_HEAD(&iface
->errors
);
355 INIT_LIST_HEAD(&iface
->users
);
356 INIT_LIST_HEAD(&iface
->hotplug_list
);
357 interface_ip_init(&iface
->proto_ip
, iface
);
358 interface_ip_init(&iface
->config_ip
, iface
);
359 avl_init(&iface
->data
, avl_strcmp
, false, NULL
);
360 iface
->config_ip
.enabled
= false;
362 iface
->main_dev
.cb
= interface_cb
;
364 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
365 blob_data(config
), blob_len(config
));
367 if ((cur
= tb
[IFACE_ATTR_PROTO
]))
368 proto_name
= blobmsg_data(cur
);
370 proto_attach_interface(iface
, proto_name
);
372 iface
->autostart
= blobmsg_get_bool_default(tb
[IFACE_ATTR_AUTO
], true);
373 iface
->proto_ip
.no_defaultroute
=
374 !blobmsg_get_bool_default(tb
[IFACE_ATTR_DEFAULTROUTE
], true);
376 iface
->config_autostart
= iface
->autostart
;
380 interface_add(struct interface
*iface
, struct blob_attr
*config
)
382 struct blob_attr
*tb
[IFACE_ATTR_MAX
];
383 struct blob_attr
*cur
;
385 blobmsg_parse(iface_attrs
, IFACE_ATTR_MAX
, tb
,
386 blob_data(config
), blob_len(config
));
388 if ((cur
= tb
[IFACE_ATTR_IFNAME
]))
389 iface
->ifname
= blobmsg_data(cur
);
391 iface
->config
= config
;
392 vlist_add(&interfaces
, &iface
->node
, iface
->name
);
396 interface_set_l3_dev(struct interface
*iface
, struct device
*dev
)
398 bool enabled
= iface
->config_ip
.enabled
;
399 bool claimed
= iface
->l3_dev
.claimed
;
401 if (iface
->l3_dev
.dev
== dev
)
404 interface_ip_set_enabled(&iface
->config_ip
, false);
405 interface_ip_flush(&iface
->proto_ip
);
406 device_add_user(&iface
->l3_dev
, dev
);
410 device_claim(&iface
->l3_dev
);
411 interface_ip_set_enabled(&iface
->config_ip
, enabled
);
416 interface_set_main_dev(struct interface
*iface
, struct device
*dev
)
418 bool set_l3
= (iface
->main_dev
.dev
== iface
->l3_dev
.dev
);
419 bool claimed
= iface
->l3_dev
.claimed
;
421 if (iface
->main_dev
.dev
== dev
)
425 interface_set_l3_dev(iface
, dev
);
427 device_add_user(&iface
->main_dev
, dev
);
429 device_claim(&iface
->l3_dev
);
431 if (!iface
->l3_dev
.dev
)
432 interface_set_l3_dev(iface
, dev
);
436 interface_remove_link(struct interface
*iface
, struct device
*dev
)
438 struct device
*mdev
= iface
->main_dev
.dev
;
440 if (mdev
&& mdev
->hotplug_ops
)
441 return mdev
->hotplug_ops
->del(mdev
, dev
);
443 if (!iface
->main_dev
.hotplug
)
444 return UBUS_STATUS_INVALID_ARGUMENT
;
446 if (dev
!= iface
->main_dev
.dev
)
447 return UBUS_STATUS_INVALID_ARGUMENT
;
449 device_remove_user(&iface
->main_dev
);
454 interface_add_link(struct interface
*iface
, struct device
*dev
)
456 struct device
*mdev
= iface
->main_dev
.dev
;
461 if (iface
->main_dev
.hotplug
)
462 device_remove_user(&iface
->main_dev
);
465 if (mdev
->hotplug_ops
)
466 return mdev
->hotplug_ops
->add(mdev
, dev
);
468 return UBUS_STATUS_NOT_SUPPORTED
;
471 interface_set_main_dev(iface
, dev
);
472 iface
->main_dev
.hotplug
= true;
477 interface_set_up(struct interface
*iface
)
481 iface
->autostart
= true;
483 if (iface
->state
!= IFS_DOWN
)
486 interface_clear_errors(iface
);
487 if (!iface
->available
) {
488 interface_add_error(iface
, "interface", "NO_DEVICE", NULL
, 0);
492 if (iface
->main_dev
.dev
) {
493 ret
= device_claim(&iface
->main_dev
);
498 iface
->state
= IFS_SETUP
;
499 ret
= interface_proto_event(iface
->proto
, PROTO_CMD_SETUP
, false);
501 mark_interface_down(iface
);
509 interface_set_down(struct interface
*iface
)
512 vlist_for_each_element(&interfaces
, iface
, node
)
513 __interface_set_down(iface
, false);
515 iface
->autostart
= false;
516 __interface_set_down(iface
, false);
523 interface_start_pending(void)
525 struct interface
*iface
;
527 vlist_for_each_element(&interfaces
, iface
, node
) {
528 if (iface
->available
&& iface
->autostart
)
529 interface_set_up(iface
);
534 set_config_state(struct interface
*iface
, enum interface_config_state s
)
536 iface
->config_state
= s
;
537 if (iface
->state
== IFS_DOWN
)
538 interface_handle_config_change(iface
);
540 __interface_set_down(iface
, false);
544 interface_update_start(struct interface
*iface
)
546 interface_ip_update_start(&iface
->proto_ip
);
550 interface_update_complete(struct interface
*iface
)
552 struct device_route
*route
;
554 interface_ip_update_complete(&iface
->proto_ip
);
555 vlist_for_each_element(&iface
->config_ip
.route
, route
, node
) {
556 if (iface
->l3_dev
.dev
) {
557 system_add_route(iface
->l3_dev
.dev
, route
);
558 route
->enabled
= true;
564 interface_change_config(struct interface
*if_old
, struct interface
*if_new
)
566 struct blob_attr
*old_config
= if_old
->config
;
567 const char *old_ifname
= if_old
->ifname
;
568 const struct proto_handler
*proto
= if_old
->proto_handler
;
570 interface_clear_errors(if_old
);
571 if_old
->config
= if_new
->config
;
572 if (!if_old
->config_autostart
&& if_new
->config_autostart
)
573 if_old
->autostart
= true;
575 if_old
->config_autostart
= if_new
->config_autostart
;
576 if_old
->ifname
= if_new
->ifname
;
577 if_old
->proto_handler
= if_new
->proto_handler
;
579 if ((!!old_ifname
!= !!if_new
->ifname
) ||
580 (old_ifname
&& strcmp(old_ifname
, if_new
->ifname
) != 0) ||
581 proto
!= if_new
->proto_handler
) {
582 D(INTERFACE
, "Reload interface '%s' because of ifname/proto change\n",
587 if (!proto
->config_params
)
588 D(INTERFACE
, "No config parameters for interface '%s'\n",
590 else if (!config_check_equal(old_config
, if_new
->config
,
591 proto
->config_params
)) {
592 D(INTERFACE
, "Reload interface '%s because of config changes\n",
597 #define UPDATE(field) ({ \
598 bool __changed = (if_old->field != if_new->field); \
599 if_old->field = if_new->field; \
603 if (UPDATE(metric
) || UPDATE(proto_ip
.no_defaultroute
)) {
604 interface_ip_set_enabled(&if_old
->config_ip
, false);
605 interface_ip_set_enabled(&if_old
->config_ip
, if_new
->config_ip
.enabled
);
606 interface_ip_set_enabled(&if_old
->proto_ip
, false);
607 interface_ip_set_enabled(&if_old
->proto_ip
, if_new
->proto_ip
.enabled
);
615 set_config_state(if_old
, IFC_RELOAD
);
622 interface_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
623 struct vlist_node
*node_old
)
625 struct interface
*if_old
= container_of(node_old
, struct interface
, node
);
626 struct interface
*if_new
= container_of(node_new
, struct interface
, node
);
628 if (node_old
&& node_new
) {
629 D(INTERFACE
, "Update interface '%s'\n", if_new
->name
);
630 interface_change_config(if_old
, if_new
);
631 } else if (node_old
) {
632 D(INTERFACE
, "Remove interface '%s'\n", if_old
->name
);
633 set_config_state(if_old
, IFC_REMOVE
);
634 } else if (node_new
) {
635 D(INTERFACE
, "Create interface '%s'\n", if_new
->name
);
636 proto_init_interface(if_new
, if_new
->config
);
637 interface_claim_device(if_new
);
638 netifd_ubus_add_interface(if_new
);
644 interface_init_list(void)
646 vlist_init(&interfaces
, avl_strcmp
, interface_update
);
647 interfaces
.keep_old
= true;
648 interfaces
.no_delete
= true;