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
,
34 BRIDGE_ATTR_BRIDGE_EMPTY
,
35 BRIDGE_ATTR_MULTICAST_QUERIER
,
37 BRIDGE_ATTR_ROBUSTNESS
,
38 BRIDGE_ATTR_QUERY_INTERVAL
,
39 BRIDGE_ATTR_QUERY_RESPONSE_INTERVAL
,
40 BRIDGE_ATTR_LAST_MEMBER_INTERVAL
,
41 BRIDGE_ATTR_VLAN_FILTERING
,
45 static const struct blobmsg_policy bridge_attrs
[__BRIDGE_ATTR_MAX
] = {
46 [BRIDGE_ATTR_IFNAME
] = { "ifname", BLOBMSG_TYPE_ARRAY
},
47 [BRIDGE_ATTR_STP
] = { "stp", BLOBMSG_TYPE_BOOL
},
48 [BRIDGE_ATTR_FORWARD_DELAY
] = { "forward_delay", BLOBMSG_TYPE_INT32
},
49 [BRIDGE_ATTR_PRIORITY
] = { "priority", BLOBMSG_TYPE_INT32
},
50 [BRIDGE_ATTR_AGEING_TIME
] = { "ageing_time", BLOBMSG_TYPE_INT32
},
51 [BRIDGE_ATTR_HELLO_TIME
] = { "hello_time", BLOBMSG_TYPE_INT32
},
52 [BRIDGE_ATTR_MAX_AGE
] = { "max_age", BLOBMSG_TYPE_INT32
},
53 [BRIDGE_ATTR_IGMP_SNOOP
] = { "igmp_snooping", BLOBMSG_TYPE_BOOL
},
54 [BRIDGE_ATTR_BRIDGE_EMPTY
] = { "bridge_empty", BLOBMSG_TYPE_BOOL
},
55 [BRIDGE_ATTR_MULTICAST_QUERIER
] = { "multicast_querier", BLOBMSG_TYPE_BOOL
},
56 [BRIDGE_ATTR_HASH_MAX
] = { "hash_max", BLOBMSG_TYPE_INT32
},
57 [BRIDGE_ATTR_ROBUSTNESS
] = { "robustness", BLOBMSG_TYPE_INT32
},
58 [BRIDGE_ATTR_QUERY_INTERVAL
] = { "query_interval", BLOBMSG_TYPE_INT32
},
59 [BRIDGE_ATTR_QUERY_RESPONSE_INTERVAL
] = { "query_response_interval", BLOBMSG_TYPE_INT32
},
60 [BRIDGE_ATTR_LAST_MEMBER_INTERVAL
] = { "last_member_interval", BLOBMSG_TYPE_INT32
},
61 [BRIDGE_ATTR_VLAN_FILTERING
] = { "vlan_filtering", BLOBMSG_TYPE_BOOL
},
64 static const struct uci_blob_param_info bridge_attr_info
[__BRIDGE_ATTR_MAX
] = {
65 [BRIDGE_ATTR_IFNAME
] = { .type
= BLOBMSG_TYPE_STRING
},
68 static const struct uci_blob_param_list bridge_attr_list
= {
69 .n_params
= __BRIDGE_ATTR_MAX
,
70 .params
= bridge_attrs
,
71 .info
= bridge_attr_info
,
74 .next
= { &device_attr_list
},
77 static struct device
*bridge_create(const char *name
, struct device_type
*devtype
,
78 struct blob_attr
*attr
);
79 static void bridge_config_init(struct device
*dev
);
80 static void bridge_free(struct device
*dev
);
81 static void bridge_dump_info(struct device
*dev
, struct blob_buf
*b
);
82 static enum dev_change_type
83 bridge_reload(struct device
*dev
, struct blob_attr
*attr
);
85 static struct device_type bridge_device_type
= {
87 .config_params
= &bridge_attr_list
,
89 .bridge_capability
= true,
92 .create
= bridge_create
,
93 .config_init
= bridge_config_init
,
94 .reload
= bridge_reload
,
96 .dump_info
= bridge_dump_info
,
101 device_state_cb set_state
;
103 struct blob_attr
*config_data
;
104 struct bridge_config config
;
105 struct blob_attr
*ifnames
;
109 struct uloop_timeout retry
;
110 struct bridge_member
*primary_port
;
111 struct vlist_tree members
;
116 struct bridge_member
{
117 struct vlist_node node
;
118 struct bridge_state
*bst
;
119 struct device_user dev
;
125 bridge_reset_primary(struct bridge_state
*bst
)
127 struct bridge_member
*bm
;
129 if (!bst
->primary_port
&&
130 (bst
->dev
.settings
.flags
& DEV_OPT_MACADDR
))
133 bst
->primary_port
= NULL
;
134 bst
->dev
.settings
.flags
&= ~DEV_OPT_MACADDR
;
135 vlist_for_each_element(&bst
->members
, bm
, node
) {
141 bst
->primary_port
= bm
;
142 if (bm
->dev
.dev
->settings
.flags
& DEV_OPT_MACADDR
)
143 macaddr
= bm
->dev
.dev
->settings
.macaddr
;
145 macaddr
= bm
->dev
.dev
->orig_settings
.macaddr
;
146 memcpy(bst
->dev
.settings
.macaddr
, macaddr
, 6);
147 bst
->dev
.settings
.flags
|= DEV_OPT_MACADDR
;
153 bridge_disable_member(struct bridge_member
*bm
)
155 struct bridge_state
*bst
= bm
->bst
;
160 system_bridge_delif(&bst
->dev
, bm
->dev
.dev
);
161 device_release(&bm
->dev
);
163 device_broadcast_event(&bst
->dev
, DEV_EVENT_TOPO_CHANGE
);
169 bridge_enable_interface(struct bridge_state
*bst
)
176 ret
= system_bridge_addbr(&bst
->dev
, &bst
->config
);
185 bridge_disable_interface(struct bridge_state
*bst
)
190 system_bridge_delbr(&bst
->dev
);
195 bridge_enable_member(struct bridge_member
*bm
)
197 struct bridge_state
*bst
= bm
->bst
;
203 ret
= bridge_enable_interface(bst
);
207 /* Disable IPv6 for bridge members */
208 if (!(bm
->dev
.dev
->settings
.flags
& DEV_OPT_IPV6
)) {
209 bm
->dev
.dev
->settings
.ipv6
= 0;
210 bm
->dev
.dev
->settings
.flags
|= DEV_OPT_IPV6
;
213 ret
= device_claim(&bm
->dev
);
217 ret
= system_bridge_addif(&bst
->dev
, bm
->dev
.dev
);
219 D(DEVICE
, "Bridge device %s could not be added\n", bm
->dev
.dev
->ifname
);
223 device_set_present(&bst
->dev
, true);
224 device_broadcast_event(&bst
->dev
, DEV_EVENT_TOPO_CHANGE
);
232 device_release(&bm
->dev
);
238 bridge_remove_member(struct bridge_member
*bm
)
240 struct bridge_state
*bst
= bm
->bst
;
246 bridge_disable_member(bm
);
249 bm
->bst
->n_present
--;
251 if (bm
== bst
->primary_port
)
252 bridge_reset_primary(bst
);
254 if (bst
->config
.bridge_empty
)
257 bst
->force_active
= false;
258 if (bst
->n_present
== 0)
259 device_set_present(&bst
->dev
, false);
263 bridge_free_member(struct bridge_member
*bm
)
265 struct device
*dev
= bm
->dev
.dev
;
267 bridge_remove_member(bm
);
268 device_remove_user(&bm
->dev
);
271 * When reloading the config and moving a device from one bridge to
272 * another, the other bridge may have tried to claim this device
273 * before it was removed here.
274 * Ensure that claiming the device is retried by toggling its present
278 device_set_present(dev
, false);
279 device_set_present(dev
, true);
286 bridge_check_retry(struct bridge_state
*bst
)
291 uloop_timeout_set(&bst
->retry
, 100);
295 bridge_member_cb(struct device_user
*dev
, enum device_event ev
)
297 struct bridge_member
*bm
= container_of(dev
, struct bridge_member
, dev
);
298 struct bridge_state
*bst
= bm
->bst
;
302 assert(!bm
->present
);
307 if (bst
->n_present
== 1)
308 device_set_present(&bst
->dev
, true);
309 if (bst
->dev
.active
&& !bridge_enable_member(bm
)) {
311 * Adding a bridge member can overwrite the bridge mtu
312 * in the kernel, apply the bridge settings in case the
315 system_if_apply_settings(&bst
->dev
, &bst
->dev
.settings
,
316 DEV_OPT_MTU
| DEV_OPT_MTU6
);
320 case DEV_EVENT_REMOVE
:
322 vlist_delete(&bst
->members
, &bm
->node
);
327 bridge_remove_member(bm
);
336 bridge_set_down(struct bridge_state
*bst
)
338 struct bridge_member
*bm
;
340 bst
->set_state(&bst
->dev
, false);
342 vlist_for_each_element(&bst
->members
, bm
, node
)
343 bridge_disable_member(bm
);
345 bridge_disable_interface(bst
);
351 bridge_set_up(struct bridge_state
*bst
)
353 struct bridge_member
*bm
;
356 if (!bst
->n_present
) {
357 if (!bst
->force_active
)
360 ret
= bridge_enable_interface(bst
);
366 vlist_for_each_element(&bst
->members
, bm
, node
)
367 bridge_enable_member(bm
);
368 bridge_check_retry(bst
);
370 if (!bst
->force_active
&& !bst
->n_present
) {
371 /* initialization of all member interfaces failed */
372 bridge_disable_interface(bst
);
373 device_set_present(&bst
->dev
, false);
377 bridge_reset_primary(bst
);
378 ret
= bst
->set_state(&bst
->dev
, true);
380 bridge_set_down(bst
);
386 bridge_set_state(struct device
*dev
, bool up
)
388 struct bridge_state
*bst
;
390 bst
= container_of(dev
, struct bridge_state
, dev
);
393 return bridge_set_up(bst
);
395 return bridge_set_down(bst
);
398 static struct bridge_member
*
399 bridge_create_member(struct bridge_state
*bst
, const char *name
,
400 struct device
*dev
, bool hotplug
)
402 struct bridge_member
*bm
;
404 bm
= calloc(1, sizeof(*bm
) + strlen(name
) + 1);
409 bm
->dev
.cb
= bridge_member_cb
;
410 bm
->dev
.hotplug
= hotplug
;
411 strcpy(bm
->name
, name
);
413 vlist_add(&bst
->members
, &bm
->node
, bm
->name
);
415 * Need to look up the bridge member again as the above
416 * created pointer will be freed in case the bridge member
419 bm
= vlist_find(&bst
->members
, name
, bm
, node
);
421 bm
->node
.version
= -1;
427 bridge_member_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
428 struct vlist_node
*node_old
)
430 struct bridge_member
*bm
;
434 bm
= container_of(node_new
, struct bridge_member
, node
);
443 device_add_user(&bm
->dev
, dev
);
448 bm
= container_of(node_old
, struct bridge_member
, node
);
449 bridge_free_member(bm
);
455 bridge_add_member(struct bridge_state
*bst
, const char *name
)
459 dev
= device_get(name
, true);
463 bridge_create_member(bst
, name
, dev
, false);
467 bridge_hotplug_add(struct device
*dev
, struct device
*member
)
469 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
471 bridge_create_member(bst
, member
->ifname
, member
, true);
477 bridge_hotplug_del(struct device
*dev
, struct device
*member
)
479 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
480 struct bridge_member
*bm
;
482 bm
= vlist_find(&bst
->members
, member
->ifname
, bm
, node
);
484 return UBUS_STATUS_NOT_FOUND
;
486 vlist_delete(&bst
->members
, &bm
->node
);
491 bridge_hotplug_prepare(struct device
*dev
)
493 struct bridge_state
*bst
;
495 bst
= container_of(dev
, struct bridge_state
, dev
);
496 bst
->force_active
= true;
497 device_set_present(&bst
->dev
, true);
502 static const struct device_hotplug_ops bridge_ops
= {
503 .prepare
= bridge_hotplug_prepare
,
504 .add
= bridge_hotplug_add
,
505 .del
= bridge_hotplug_del
509 bridge_free(struct device
*dev
)
511 struct bridge_state
*bst
;
513 bst
= container_of(dev
, struct bridge_state
, dev
);
514 vlist_flush_all(&bst
->members
);
515 free(bst
->config_data
);
520 bridge_dump_info(struct device
*dev
, struct blob_buf
*b
)
522 struct bridge_state
*bst
;
523 struct bridge_member
*bm
;
526 bst
= container_of(dev
, struct bridge_state
, dev
);
528 system_if_dump_info(dev
, b
);
529 list
= blobmsg_open_array(b
, "bridge-members");
531 vlist_for_each_element(&bst
->members
, bm
, node
) {
532 if (bm
->dev
.dev
->hidden
)
535 blobmsg_add_string(b
, NULL
, bm
->dev
.dev
->ifname
);
538 blobmsg_close_array(b
, list
);
542 bridge_config_init(struct device
*dev
)
544 struct bridge_state
*bst
;
545 struct blob_attr
*cur
;
548 bst
= container_of(dev
, struct bridge_state
, dev
);
550 if (bst
->config
.bridge_empty
) {
551 bst
->force_active
= true;
552 device_set_present(&bst
->dev
, true);
556 vlist_update(&bst
->members
);
558 blobmsg_for_each_attr(cur
, bst
->ifnames
, rem
) {
559 bridge_add_member(bst
, blobmsg_data(cur
));
562 vlist_flush(&bst
->members
);
563 bridge_check_retry(bst
);
567 bridge_apply_settings(struct bridge_state
*bst
, struct blob_attr
**tb
)
569 struct bridge_config
*cfg
= &bst
->config
;
570 struct blob_attr
*cur
;
574 cfg
->forward_delay
= 2;
576 cfg
->query_interval
= 12500;
577 cfg
->query_response_interval
= 1000;
578 cfg
->last_member_interval
= 100;
580 cfg
->bridge_empty
= false;
581 cfg
->priority
= 0x7FFF;
582 cfg
->vlan_filtering
= false;
584 if ((cur
= tb
[BRIDGE_ATTR_STP
]))
585 cfg
->stp
= blobmsg_get_bool(cur
);
587 if ((cur
= tb
[BRIDGE_ATTR_FORWARD_DELAY
]))
588 cfg
->forward_delay
= blobmsg_get_u32(cur
);
590 if ((cur
= tb
[BRIDGE_ATTR_PRIORITY
]))
591 cfg
->priority
= blobmsg_get_u32(cur
);
593 if ((cur
= tb
[BRIDGE_ATTR_IGMP_SNOOP
]))
594 cfg
->multicast_querier
= cfg
->igmp_snoop
= blobmsg_get_bool(cur
);
596 if ((cur
= tb
[BRIDGE_ATTR_MULTICAST_QUERIER
]))
597 cfg
->multicast_querier
= blobmsg_get_bool(cur
);
599 if ((cur
= tb
[BRIDGE_ATTR_HASH_MAX
]))
600 cfg
->hash_max
= blobmsg_get_u32(cur
);
602 if ((cur
= tb
[BRIDGE_ATTR_ROBUSTNESS
])) {
603 cfg
->robustness
= blobmsg_get_u32(cur
);
604 cfg
->flags
|= BRIDGE_OPT_ROBUSTNESS
;
607 if ((cur
= tb
[BRIDGE_ATTR_QUERY_INTERVAL
])) {
608 cfg
->query_interval
= blobmsg_get_u32(cur
);
609 cfg
->flags
|= BRIDGE_OPT_QUERY_INTERVAL
;
612 if ((cur
= tb
[BRIDGE_ATTR_QUERY_RESPONSE_INTERVAL
])) {
613 cfg
->query_response_interval
= blobmsg_get_u32(cur
);
614 cfg
->flags
|= BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
;
617 if ((cur
= tb
[BRIDGE_ATTR_LAST_MEMBER_INTERVAL
])) {
618 cfg
->last_member_interval
= blobmsg_get_u32(cur
);
619 cfg
->flags
|= BRIDGE_OPT_LAST_MEMBER_INTERVAL
;
622 if ((cur
= tb
[BRIDGE_ATTR_AGEING_TIME
])) {
623 cfg
->ageing_time
= blobmsg_get_u32(cur
);
624 cfg
->flags
|= BRIDGE_OPT_AGEING_TIME
;
627 if ((cur
= tb
[BRIDGE_ATTR_HELLO_TIME
])) {
628 cfg
->hello_time
= blobmsg_get_u32(cur
);
629 cfg
->flags
|= BRIDGE_OPT_HELLO_TIME
;
632 if ((cur
= tb
[BRIDGE_ATTR_MAX_AGE
])) {
633 cfg
->max_age
= blobmsg_get_u32(cur
);
634 cfg
->flags
|= BRIDGE_OPT_MAX_AGE
;
637 if ((cur
= tb
[BRIDGE_ATTR_BRIDGE_EMPTY
]))
638 cfg
->bridge_empty
= blobmsg_get_bool(cur
);
640 if ((cur
= tb
[BRIDGE_ATTR_VLAN_FILTERING
]))
641 cfg
->vlan_filtering
= blobmsg_get_bool(cur
);
644 static enum dev_change_type
645 bridge_reload(struct device
*dev
, struct blob_attr
*attr
)
647 struct blob_attr
*tb_dev
[__DEV_ATTR_MAX
];
648 struct blob_attr
*tb_br
[__BRIDGE_ATTR_MAX
];
649 enum dev_change_type ret
= DEV_CONFIG_APPLIED
;
651 struct bridge_state
*bst
;
653 BUILD_BUG_ON(sizeof(diff
) < __BRIDGE_ATTR_MAX
/ 8);
654 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
656 bst
= container_of(dev
, struct bridge_state
, dev
);
657 attr
= blob_memdup(attr
);
659 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, tb_dev
,
660 blob_data(attr
), blob_len(attr
));
661 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, tb_br
,
662 blob_data(attr
), blob_len(attr
));
664 if (tb_dev
[DEV_ATTR_MACADDR
])
665 bst
->primary_port
= NULL
;
667 bst
->ifnames
= tb_br
[BRIDGE_ATTR_IFNAME
];
668 device_init_settings(dev
, tb_dev
);
669 bridge_apply_settings(bst
, tb_br
);
671 if (bst
->config_data
) {
672 struct blob_attr
*otb_dev
[__DEV_ATTR_MAX
];
673 struct blob_attr
*otb_br
[__BRIDGE_ATTR_MAX
];
675 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb_dev
,
676 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
679 uci_blob_diff(tb_dev
, otb_dev
, &device_attr_list
, &diff
);
681 ret
= DEV_CONFIG_RESTART
;
683 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, otb_br
,
684 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
687 uci_blob_diff(tb_br
, otb_br
, &bridge_attr_list
, &diff
);
688 if (diff
& ~(1 << BRIDGE_ATTR_IFNAME
))
689 ret
= DEV_CONFIG_RESTART
;
691 bridge_config_init(dev
);
694 free(bst
->config_data
);
695 bst
->config_data
= attr
;
700 bridge_retry_members(struct uloop_timeout
*timeout
)
702 struct bridge_state
*bst
= container_of(timeout
, struct bridge_state
, retry
);
703 struct bridge_member
*bm
;
706 vlist_for_each_element(&bst
->members
, bm
, node
) {
710 if (!bm
->dev
.dev
->present
)
715 bridge_enable_member(bm
);
719 static struct device
*
720 bridge_create(const char *name
, struct device_type
*devtype
,
721 struct blob_attr
*attr
)
723 struct bridge_state
*bst
;
724 struct device
*dev
= NULL
;
726 bst
= calloc(1, sizeof(*bst
));
732 if (device_init(dev
, devtype
, name
) < 0) {
738 dev
->config_pending
= true;
739 bst
->retry
.cb
= bridge_retry_members
;
741 bst
->set_state
= dev
->set_state
;
742 dev
->set_state
= bridge_set_state
;
744 dev
->hotplug_ops
= &bridge_ops
;
746 vlist_init(&bst
->members
, avl_strcmp
, bridge_member_update
);
747 bst
->members
.keep_old
= true;
748 bridge_reload(dev
, attr
);
753 static void __init
bridge_device_type_init(void)
755 device_type_add(&bridge_device_type
);