2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
22 #include "interface.h"
28 BRIDGE_ATTR_FORWARD_DELAY
,
30 BRIDGE_ATTR_IGMP_SNOOP
,
31 BRIDGE_ATTR_AGEING_TIME
,
32 BRIDGE_ATTR_HELLO_TIME
,
37 static const struct blobmsg_policy bridge_attrs
[__BRIDGE_ATTR_MAX
] = {
38 [BRIDGE_ATTR_IFNAME
] = { "ifname", BLOBMSG_TYPE_ARRAY
},
39 [BRIDGE_ATTR_STP
] = { "stp", BLOBMSG_TYPE_BOOL
},
40 [BRIDGE_ATTR_FORWARD_DELAY
] = { "forward_delay", BLOBMSG_TYPE_INT32
},
41 [BRIDGE_ATTR_PRIORITY
] = { "priority", BLOBMSG_TYPE_INT32
},
42 [BRIDGE_ATTR_AGEING_TIME
] = { "ageing_time", BLOBMSG_TYPE_INT32
},
43 [BRIDGE_ATTR_HELLO_TIME
] = { "hello_time", BLOBMSG_TYPE_INT32
},
44 [BRIDGE_ATTR_MAX_AGE
] = { "max_age", BLOBMSG_TYPE_INT32
},
45 [BRIDGE_ATTR_IGMP_SNOOP
] = { "igmp_snooping", BLOBMSG_TYPE_BOOL
},
48 static const union config_param_info bridge_attr_info
[__BRIDGE_ATTR_MAX
] = {
49 [BRIDGE_ATTR_IFNAME
] = { .type
= BLOBMSG_TYPE_STRING
},
52 static const struct config_param_list bridge_attr_list
= {
53 .n_params
= __BRIDGE_ATTR_MAX
,
54 .params
= bridge_attrs
,
55 .info
= bridge_attr_info
,
58 .next
= { &device_attr_list
},
61 static struct device
*bridge_create(const char *name
, struct blob_attr
*attr
);
62 static void bridge_config_init(struct device
*dev
);
63 static void bridge_free(struct device
*dev
);
64 static void bridge_dump_info(struct device
*dev
, struct blob_buf
*b
);
66 bridge_reload(struct device
*dev
, struct blob_attr
*attr
);
68 const struct device_type bridge_device_type
= {
70 .config_params
= &bridge_attr_list
,
72 .create
= bridge_create
,
73 .config_init
= bridge_config_init
,
74 .reload
= bridge_reload
,
76 .dump_info
= bridge_dump_info
,
81 device_state_cb set_state
;
83 struct blob_attr
*config_data
;
84 struct bridge_config config
;
85 struct blob_attr
*ifnames
;
89 struct bridge_member
*primary_port
;
90 struct vlist_tree members
;
94 struct bridge_member
{
95 struct vlist_node node
;
96 struct bridge_state
*bst
;
97 struct device_user dev
;
103 bridge_reset_primary(struct bridge_state
*bst
)
105 struct bridge_member
*bm
;
107 if (!bst
->primary_port
&&
108 (bst
->dev
.settings
.flags
& DEV_OPT_MACADDR
))
111 bst
->primary_port
= NULL
;
112 bst
->dev
.settings
.flags
&= ~DEV_OPT_MACADDR
;
113 vlist_for_each_element(&bst
->members
, bm
, node
) {
119 bst
->primary_port
= bm
;
120 if (bm
->dev
.dev
->settings
.flags
& DEV_OPT_MACADDR
)
121 macaddr
= bm
->dev
.dev
->settings
.macaddr
;
123 macaddr
= bm
->dev
.dev
->orig_settings
.macaddr
;
124 memcpy(bst
->dev
.settings
.macaddr
, macaddr
, 6);
125 bst
->dev
.settings
.flags
|= DEV_OPT_MACADDR
;
131 bridge_disable_member(struct bridge_member
*bm
)
133 struct bridge_state
*bst
= bm
->bst
;
138 system_bridge_delif(&bst
->dev
, bm
->dev
.dev
);
139 device_release(&bm
->dev
);
145 bridge_enable_member(struct bridge_member
*bm
)
147 struct bridge_state
*bst
= bm
->bst
;
153 ret
= device_claim(&bm
->dev
);
157 ret
= system_bridge_addif(&bst
->dev
, bm
->dev
.dev
);
159 D(DEVICE
, "Bridge device %s could not be added\n", bm
->dev
.dev
->ifname
);
172 bridge_remove_member(struct bridge_member
*bm
)
174 struct bridge_state
*bst
= bm
->bst
;
179 if (bm
== bst
->primary_port
);
180 bridge_reset_primary(bst
);
183 bridge_disable_member(bm
);
186 bm
->bst
->n_present
--;
188 bst
->force_active
= false;
189 if (bst
->n_present
== 0)
190 device_set_present(&bst
->dev
, false);
194 bridge_free_member(struct bridge_member
*bm
)
196 struct device
*dev
= bm
->dev
.dev
;
198 bridge_remove_member(bm
);
199 device_remove_user(&bm
->dev
);
202 * When reloading the config and moving a device from one bridge to
203 * another, the other bridge may have tried to claim this device
204 * before it was removed here.
205 * Ensure that claiming the device is retried by toggling its present
209 device_set_present(dev
, false);
210 device_set_present(dev
, true);
217 bridge_member_cb(struct device_user
*dev
, enum device_event ev
)
219 struct bridge_member
*bm
= container_of(dev
, struct bridge_member
, dev
);
220 struct bridge_state
*bst
= bm
->bst
;
224 assert(!bm
->present
);
230 bridge_enable_member(bm
);
231 else if (bst
->n_present
== 1)
232 device_set_present(&bst
->dev
, true);
235 case DEV_EVENT_REMOVE
:
237 vlist_delete(&bst
->members
, &bm
->node
);
242 bridge_remove_member(bm
);
251 bridge_set_down(struct bridge_state
*bst
)
253 struct bridge_member
*bm
;
255 bst
->set_state(&bst
->dev
, false);
257 vlist_for_each_element(&bst
->members
, bm
, node
)
258 bridge_disable_member(bm
);
260 system_bridge_delbr(&bst
->dev
);
266 bridge_set_up(struct bridge_state
*bst
)
268 struct bridge_member
*bm
;
271 if (!bst
->force_active
&& !bst
->n_present
)
274 ret
= system_bridge_addbr(&bst
->dev
, &bst
->config
);
278 vlist_for_each_element(&bst
->members
, bm
, node
)
279 bridge_enable_member(bm
);
281 if (!bst
->force_active
&& !bst
->n_present
) {
282 /* initialization of all member interfaces failed */
283 system_bridge_delbr(&bst
->dev
);
284 device_set_present(&bst
->dev
, false);
288 bridge_reset_primary(bst
);
289 ret
= bst
->set_state(&bst
->dev
, true);
291 bridge_set_down(bst
);
298 bridge_set_state(struct device
*dev
, bool up
)
300 struct bridge_state
*bst
;
302 bst
= container_of(dev
, struct bridge_state
, dev
);
305 return bridge_set_up(bst
);
307 return bridge_set_down(bst
);
310 static struct bridge_member
*
311 bridge_create_member(struct bridge_state
*bst
, struct device
*dev
, bool hotplug
)
313 struct bridge_member
*bm
;
315 bm
= calloc(1, sizeof(*bm
) + strlen(dev
->ifname
) + 1);
317 bm
->dev
.cb
= bridge_member_cb
;
318 bm
->dev
.hotplug
= hotplug
;
319 strcpy(bm
->name
, dev
->ifname
);
321 vlist_add(&bst
->members
, &bm
->node
, bm
->name
);
323 bm
->node
.version
= -1;
329 bridge_member_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
330 struct vlist_node
*node_old
)
332 struct bridge_member
*bm
;
336 bm
= container_of(node_new
, struct bridge_member
, node
);
345 device_add_user(&bm
->dev
, dev
);
350 bm
= container_of(node_old
, struct bridge_member
, node
);
351 bridge_free_member(bm
);
357 bridge_add_member(struct bridge_state
*bst
, const char *name
)
361 dev
= device_get(name
, true);
365 bridge_create_member(bst
, dev
, false);
369 bridge_hotplug_add(struct device
*dev
, struct device
*member
)
371 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
373 bridge_create_member(bst
, member
, true);
379 bridge_hotplug_del(struct device
*dev
, struct device
*member
)
381 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
382 struct bridge_member
*bm
;
384 bm
= vlist_find(&bst
->members
, member
->ifname
, bm
, node
);
386 return UBUS_STATUS_NOT_FOUND
;
388 vlist_delete(&bst
->members
, &bm
->node
);
393 bridge_hotplug_prepare(struct device
*dev
)
395 struct bridge_state
*bst
;
397 bst
= container_of(dev
, struct bridge_state
, dev
);
398 bst
->force_active
= true;
399 device_set_present(&bst
->dev
, true);
404 static const struct device_hotplug_ops bridge_ops
= {
405 .prepare
= bridge_hotplug_prepare
,
406 .add
= bridge_hotplug_add
,
407 .del
= bridge_hotplug_del
411 bridge_free(struct device
*dev
)
413 struct bridge_state
*bst
;
415 bst
= container_of(dev
, struct bridge_state
, dev
);
416 vlist_flush_all(&bst
->members
);
421 bridge_dump_info(struct device
*dev
, struct blob_buf
*b
)
423 struct bridge_state
*bst
;
424 struct bridge_member
*bm
;
427 bst
= container_of(dev
, struct bridge_state
, dev
);
429 system_if_dump_info(dev
, b
);
430 list
= blobmsg_open_array(b
, "bridge-members");
432 vlist_for_each_element(&bst
->members
, bm
, node
)
433 blobmsg_add_string(b
, NULL
, bm
->dev
.dev
->ifname
);
435 blobmsg_close_array(b
, list
);
439 bridge_config_init(struct device
*dev
)
441 struct bridge_state
*bst
;
442 struct blob_attr
*cur
;
445 bst
= container_of(dev
, struct bridge_state
, dev
);
450 vlist_update(&bst
->members
);
451 blobmsg_for_each_attr(cur
, bst
->ifnames
, rem
) {
452 bridge_add_member(bst
, blobmsg_data(cur
));
454 vlist_flush(&bst
->members
);
458 bridge_apply_settings(struct bridge_state
*bst
, struct blob_attr
**tb
)
460 struct bridge_config
*cfg
= &bst
->config
;
461 struct blob_attr
*cur
;
465 cfg
->forward_delay
= 2;
466 cfg
->igmp_snoop
= false;
467 cfg
->priority
= 0x7FFF;
469 if ((cur
= tb
[BRIDGE_ATTR_STP
]))
470 cfg
->stp
= blobmsg_get_bool(cur
);
472 if ((cur
= tb
[BRIDGE_ATTR_FORWARD_DELAY
]))
473 cfg
->forward_delay
= blobmsg_get_u32(cur
);
475 if ((cur
= tb
[BRIDGE_ATTR_PRIORITY
]))
476 cfg
->priority
= blobmsg_get_u32(cur
);
478 if ((cur
= tb
[BRIDGE_ATTR_IGMP_SNOOP
]))
479 cfg
->igmp_snoop
= blobmsg_get_bool(cur
);
481 if ((cur
= tb
[BRIDGE_ATTR_AGEING_TIME
])) {
482 cfg
->ageing_time
= blobmsg_get_u32(cur
);
483 cfg
->flags
|= BRIDGE_OPT_AGEING_TIME
;
486 if ((cur
= tb
[BRIDGE_ATTR_HELLO_TIME
])) {
487 cfg
->hello_time
= blobmsg_get_u32(cur
);
488 cfg
->flags
|= BRIDGE_OPT_HELLO_TIME
;
491 if ((cur
= tb
[BRIDGE_ATTR_MAX_AGE
])) {
492 cfg
->max_age
= blobmsg_get_u32(cur
);
493 cfg
->flags
|= BRIDGE_OPT_MAX_AGE
;
498 bridge_reload(struct device
*dev
, struct blob_attr
*attr
)
500 struct blob_attr
*tb_dev
[__DEV_ATTR_MAX
];
501 struct blob_attr
*tb_br
[__BRIDGE_ATTR_MAX
];
502 enum dev_change_type ret
= DEV_CONFIG_APPLIED
;
504 struct bridge_state
*bst
;
506 BUILD_BUG_ON(sizeof(diff
) < __BRIDGE_ATTR_MAX
/ 8);
507 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
509 bst
= container_of(dev
, struct bridge_state
, dev
);
511 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, tb_dev
,
512 blob_data(attr
), blob_len(attr
));
513 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, tb_br
,
514 blob_data(attr
), blob_len(attr
));
516 bst
->ifnames
= tb_br
[BRIDGE_ATTR_IFNAME
];
517 device_init_settings(dev
, tb_dev
);
518 bridge_apply_settings(bst
, tb_br
);
520 if (bst
->config_data
) {
521 struct blob_attr
*otb_dev
[__DEV_ATTR_MAX
];
522 struct blob_attr
*otb_br
[__BRIDGE_ATTR_MAX
];
524 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb_dev
,
525 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
528 config_diff(tb_dev
, otb_dev
, &device_attr_list
, &diff
);
529 if (diff
& ~(1 << DEV_ATTR_IFNAME
))
530 ret
= DEV_CONFIG_RESTART
;
532 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, otb_br
,
533 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
536 config_diff(tb_br
, otb_br
, &bridge_attr_list
, &diff
);
537 if (diff
& ~(1 << BRIDGE_ATTR_IFNAME
))
538 ret
= DEV_CONFIG_RESTART
;
540 bridge_config_init(dev
);
543 bst
->config_data
= attr
;
547 static struct device
*
548 bridge_create(const char *name
, struct blob_attr
*attr
)
550 struct bridge_state
*bst
;
551 struct device
*dev
= NULL
;
553 bst
= calloc(1, sizeof(*bst
));
558 device_init(dev
, &bridge_device_type
, name
);
559 dev
->config_pending
= true;
561 bst
->set_state
= dev
->set_state
;
562 dev
->set_state
= bridge_set_state
;
564 dev
->hotplug_ops
= &bridge_ops
;
566 vlist_init(&bst
->members
, avl_strcmp
, bridge_member_update
);
567 bst
->members
.keep_old
= true;
568 bridge_reload(dev
, attr
);