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"
29 BRIDGE_ATTR_FORWARD_DELAY
,
31 BRIDGE_ATTR_IGMP_SNOOP
,
32 BRIDGE_ATTR_AGEING_TIME
,
33 BRIDGE_ATTR_HELLO_TIME
,
35 BRIDGE_ATTR_BRIDGE_EMPTY
,
36 BRIDGE_ATTR_MULTICAST_QUERIER
,
38 BRIDGE_ATTR_ROBUSTNESS
,
39 BRIDGE_ATTR_QUERY_INTERVAL
,
40 BRIDGE_ATTR_QUERY_RESPONSE_INTERVAL
,
41 BRIDGE_ATTR_LAST_MEMBER_INTERVAL
,
42 BRIDGE_ATTR_VLAN_FILTERING
,
43 BRIDGE_ATTR_HAS_VLANS
,
44 BRIDGE_ATTR_STP_KERNEL
,
45 BRIDGE_ATTR_STP_PROTO
,
49 static const struct blobmsg_policy bridge_attrs
[__BRIDGE_ATTR_MAX
] = {
50 [BRIDGE_ATTR_PORTS
] = { "ports", BLOBMSG_TYPE_ARRAY
},
51 [BRIDGE_ATTR_STP
] = { "stp", BLOBMSG_TYPE_BOOL
},
52 [BRIDGE_ATTR_FORWARD_DELAY
] = { "forward_delay", BLOBMSG_TYPE_INT32
},
53 [BRIDGE_ATTR_PRIORITY
] = { "priority", BLOBMSG_TYPE_INT32
},
54 [BRIDGE_ATTR_AGEING_TIME
] = { "ageing_time", BLOBMSG_TYPE_INT32
},
55 [BRIDGE_ATTR_HELLO_TIME
] = { "hello_time", BLOBMSG_TYPE_INT32
},
56 [BRIDGE_ATTR_MAX_AGE
] = { "max_age", BLOBMSG_TYPE_INT32
},
57 [BRIDGE_ATTR_IGMP_SNOOP
] = { "igmp_snooping", BLOBMSG_TYPE_BOOL
},
58 [BRIDGE_ATTR_BRIDGE_EMPTY
] = { "bridge_empty", BLOBMSG_TYPE_BOOL
},
59 [BRIDGE_ATTR_MULTICAST_QUERIER
] = { "multicast_querier", BLOBMSG_TYPE_BOOL
},
60 [BRIDGE_ATTR_HASH_MAX
] = { "hash_max", BLOBMSG_TYPE_INT32
},
61 [BRIDGE_ATTR_ROBUSTNESS
] = { "robustness", BLOBMSG_TYPE_INT32
},
62 [BRIDGE_ATTR_QUERY_INTERVAL
] = { "query_interval", BLOBMSG_TYPE_INT32
},
63 [BRIDGE_ATTR_QUERY_RESPONSE_INTERVAL
] = { "query_response_interval", BLOBMSG_TYPE_INT32
},
64 [BRIDGE_ATTR_LAST_MEMBER_INTERVAL
] = { "last_member_interval", BLOBMSG_TYPE_INT32
},
65 [BRIDGE_ATTR_VLAN_FILTERING
] = { "vlan_filtering", BLOBMSG_TYPE_BOOL
},
66 [BRIDGE_ATTR_HAS_VLANS
] = { "__has_vlans", BLOBMSG_TYPE_BOOL
}, /* internal */
67 [BRIDGE_ATTR_STP_KERNEL
] = { "stp_kernel", BLOBMSG_TYPE_BOOL
},
68 [BRIDGE_ATTR_STP_PROTO
] = { "stp_proto", BLOBMSG_TYPE_STRING
},
71 static const struct uci_blob_param_info bridge_attr_info
[__BRIDGE_ATTR_MAX
] = {
72 [BRIDGE_ATTR_PORTS
] = { .type
= BLOBMSG_TYPE_STRING
},
75 static const struct uci_blob_param_list bridge_attr_list
= {
76 .n_params
= __BRIDGE_ATTR_MAX
,
77 .params
= bridge_attrs
,
78 .info
= bridge_attr_info
,
81 .next
= { &device_attr_list
},
84 static struct blob_buf b
;
85 static struct device
*bridge_create(const char *name
, struct device_type
*devtype
,
86 struct blob_attr
*attr
);
87 static void bridge_config_init(struct device
*dev
);
88 static void bridge_dev_vlan_update(struct device
*dev
);
89 static void bridge_free(struct device
*dev
);
90 static void bridge_stp_init(struct device
*dev
);
91 static void bridge_dump_info(struct device
*dev
, struct blob_buf
*b
);
92 static enum dev_change_type
93 bridge_reload(struct device
*dev
, struct blob_attr
*attr
);
95 static struct device_type bridge_device_type
= {
97 .config_params
= &bridge_attr_list
,
99 .bridge_capability
= true,
102 .create
= bridge_create
,
103 .config_init
= bridge_config_init
,
104 .vlan_update
= bridge_dev_vlan_update
,
105 .reload
= bridge_reload
,
107 .dump_info
= bridge_dump_info
,
108 .stp_init
= bridge_stp_init
,
111 struct bridge_state
{
113 device_state_cb set_state
;
115 struct blob_attr
*config_data
;
116 struct bridge_config config
;
117 struct blob_attr
*ports
;
122 struct uloop_timeout retry
;
123 struct bridge_member
*primary_port
;
124 struct vlist_tree members
;
129 struct bridge_member
{
130 struct vlist_node node
;
131 struct bridge_state
*bst
;
132 struct device_user dev
;
133 struct uloop_timeout check_timer
;
141 bridge_reset_primary(struct bridge_state
*bst
)
143 struct bridge_member
*bm
;
145 if (!bst
->primary_port
&&
146 (bst
->dev
.settings
.flags
& DEV_OPT_MACADDR
))
149 bst
->primary_port
= NULL
;
150 bst
->dev
.settings
.flags
&= ~DEV_OPT_MACADDR
;
151 vlist_for_each_element(&bst
->members
, bm
, node
) {
157 bst
->primary_port
= bm
;
158 if (bm
->dev
.dev
->settings
.flags
& DEV_OPT_MACADDR
)
159 macaddr
= bm
->dev
.dev
->settings
.macaddr
;
161 macaddr
= bm
->dev
.dev
->orig_settings
.macaddr
;
162 memcpy(bst
->dev
.settings
.macaddr
, macaddr
, 6);
163 bst
->dev
.settings
.flags
|= DEV_OPT_MACADDR
;
168 static struct bridge_vlan_port
*
169 bridge_find_vlan_member_port(struct bridge_member
*bm
, struct bridge_vlan
*vlan
)
171 struct bridge_vlan_hotplug_port
*port
;
172 const char *ifname
= bm
->dev
.dev
->ifname
;
175 for (i
= 0; i
< vlan
->n_ports
; i
++) {
176 if (strcmp(vlan
->ports
[i
].ifname
, ifname
) != 0)
179 return &vlan
->ports
[i
];
182 list_for_each_entry(port
, &vlan
->hotplug_ports
, list
) {
183 if (strcmp(port
->port
.ifname
, ifname
) != 0)
193 bridge_member_vlan_is_pvid(struct bridge_member
*bm
, struct bridge_vlan_port
*port
)
195 return (!bm
->pvid
&& (port
->flags
& BRVLAN_F_UNTAGGED
)) ||
196 (port
->flags
& BRVLAN_F_PVID
);
200 __bridge_set_member_vlan(struct bridge_member
*bm
, struct bridge_vlan
*vlan
,
201 struct bridge_vlan_port
*port
, bool add
)
206 if (bm
->pvid
== vlan
->vid
)
207 flags
|= BRVLAN_F_PVID
;
209 system_bridge_vlan(port
->ifname
, vlan
->vid
, add
, flags
);
213 bridge_set_member_vlan(struct bridge_member
*bm
, struct bridge_vlan
*vlan
, bool add
)
215 struct bridge_vlan_port
*port
;
220 port
= bridge_find_vlan_member_port(bm
, vlan
);
224 if (bridge_member_vlan_is_pvid(bm
, port
))
225 bm
->pvid
= vlan
->vid
;
227 __bridge_set_member_vlan(bm
, vlan
, port
, add
);
231 bridge_set_local_vlan(struct bridge_state
*bst
, struct bridge_vlan
*vlan
, bool add
)
233 if (!vlan
->local
&& add
)
236 system_bridge_vlan(bst
->dev
.ifname
, vlan
->vid
, add
, BRVLAN_F_SELF
);
240 bridge_set_local_vlans(struct bridge_state
*bst
, bool add
)
242 struct bridge_vlan
*vlan
;
244 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
245 bridge_set_local_vlan(bst
, vlan
, add
);
248 static struct bridge_vlan
*
249 bridge_recalc_member_pvid(struct bridge_member
*bm
)
251 struct bridge_state
*bst
= bm
->bst
;
252 struct bridge_vlan_port
*port
;
253 struct bridge_vlan
*vlan
, *ret
= NULL
;
255 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
) {
256 port
= bridge_find_vlan_member_port(bm
, vlan
);
260 if (!bridge_member_vlan_is_pvid(bm
, port
))
264 if (port
->flags
& BRVLAN_F_PVID
)
272 bridge_set_vlan_state(struct bridge_state
*bst
, struct bridge_vlan
*vlan
, bool add
)
274 struct bridge_member
*bm
;
275 struct bridge_vlan
*vlan2
;
277 bridge_set_local_vlan(bst
, vlan
, add
);
279 vlist_for_each_element(&bst
->members
, bm
, node
) {
280 struct bridge_vlan_port
*port
;
283 port
= bridge_find_vlan_member_port(bm
, vlan
);
288 if (bridge_member_vlan_is_pvid(bm
, port
))
289 bm
->pvid
= vlan
->vid
;
290 } else if (bm
->pvid
== vlan
->vid
) {
291 vlan2
= bridge_recalc_member_pvid(bm
);
292 if (vlan2
&& vlan2
->vid
!= vlan
->vid
) {
293 bridge_set_member_vlan(bm
, vlan2
, false);
294 bridge_set_member_vlan(bm
, vlan2
, true);
296 new_pvid
= vlan2
? vlan2
->vid
: 0;
302 __bridge_set_member_vlan(bm
, vlan
, port
, add
);
309 bridge_disable_member(struct bridge_member
*bm
, bool keep_dev
)
311 struct bridge_state
*bst
= bm
->bst
;
312 struct bridge_vlan
*vlan
;
314 if (!bm
->present
|| !bm
->active
)
318 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
319 bridge_set_member_vlan(bm
, vlan
, false);
321 system_bridge_delif(&bst
->dev
, bm
->dev
.dev
);
323 device_release(&bm
->dev
);
325 device_broadcast_event(&bst
->dev
, DEV_EVENT_TOPO_CHANGE
);
330 static void bridge_stp_notify(struct bridge_state
*bst
)
332 struct bridge_config
*cfg
= &bst
->config
;
334 if (!cfg
->stp
|| cfg
->stp_kernel
)
337 blob_buf_init(&b
, 0);
338 blobmsg_add_string(&b
, "name", bst
->dev
.ifname
);
340 blobmsg_add_string(&b
, "proto", cfg
->stp_proto
);
341 blobmsg_add_u32(&b
, "forward_delay", cfg
->forward_delay
);
342 blobmsg_add_u32(&b
, "hello_time", cfg
->hello_time
);
343 blobmsg_add_u32(&b
, "max_age", cfg
->max_age
);
344 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
)
345 blobmsg_add_u32(&b
, "ageing_time", cfg
->ageing_time
);
346 netifd_ubus_device_notify("stp_init", b
.head
, 1000);
350 bridge_enable_interface(struct bridge_state
*bst
)
357 bridge_stp_notify(bst
);
358 ret
= system_bridge_addbr(&bst
->dev
, &bst
->config
);
362 if (bst
->has_vlans
) {
363 /* delete default VLAN 1 */
364 system_bridge_vlan(bst
->dev
.ifname
, 1, false, BRVLAN_F_SELF
);
366 bridge_set_local_vlans(bst
, true);
374 bridge_stp_init(struct device
*dev
)
376 struct bridge_state
*bst
;
378 bst
= container_of(dev
, struct bridge_state
, dev
);
379 if (!bst
->config
.stp
|| !bst
->active
)
382 bridge_stp_notify(bst
);
383 system_bridge_set_stp_state(&bst
->dev
, false);
384 system_bridge_set_stp_state(&bst
->dev
, true);
388 bridge_disable_interface(struct bridge_state
*bst
)
393 system_bridge_delbr(&bst
->dev
);
398 bridge_enable_member(struct bridge_member
*bm
)
400 struct bridge_state
*bst
= bm
->bst
;
401 struct bridge_vlan
*vlan
;
408 ret
= bridge_enable_interface(bst
);
412 /* Disable IPv6 for bridge members */
413 if (!(bm
->dev
.dev
->settings
.flags
& DEV_OPT_IPV6
)) {
414 bm
->dev
.dev
->settings
.ipv6
= 0;
415 bm
->dev
.dev
->settings
.flags
|= DEV_OPT_IPV6
;
418 ret
= device_claim(&bm
->dev
);
423 if (dev
->settings
.auth
&& !dev
->auth_status
)
429 ret
= system_bridge_addif(&bst
->dev
, bm
->dev
.dev
);
431 D(DEVICE
, "Bridge device %s could not be added\n", bm
->dev
.dev
->ifname
);
436 if (bst
->has_vlans
) {
437 /* delete default VLAN 1 */
438 system_bridge_vlan(bm
->dev
.dev
->ifname
, 1, false, 0);
440 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
441 bridge_set_member_vlan(bm
, vlan
, true);
444 device_set_present(&bst
->dev
, true);
445 device_broadcast_event(&bst
->dev
, DEV_EVENT_TOPO_CHANGE
);
453 device_release(&bm
->dev
);
459 bridge_remove_member(struct bridge_member
*bm
)
461 struct bridge_state
*bst
= bm
->bst
;
467 bridge_disable_member(bm
, false);
470 bm
->bst
->n_present
--;
472 if (bm
== bst
->primary_port
)
473 bridge_reset_primary(bst
);
475 if (bst
->config
.bridge_empty
)
478 bst
->force_active
= false;
479 if (bst
->n_present
== 0)
480 device_set_present(&bst
->dev
, false);
484 bridge_free_member(struct bridge_member
*bm
)
486 struct bridge_state
*bst
= bm
->bst
;
487 struct device
*dev
= bm
->dev
.dev
;
488 const char *ifname
= dev
->ifname
;
489 struct bridge_vlan
*vlan
;
491 bridge_remove_member(bm
);
494 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
) {
495 struct bridge_vlan_hotplug_port
*port
, *tmp
;
496 bool free_port
= false;
498 list_for_each_entry_safe(port
, tmp
, &vlan
->hotplug_ports
, list
) {
499 if (strcmp(port
->port
.ifname
, ifname
) != 0)
502 list_del(&port
->list
);
507 if (!free_port
|| !list_empty(&vlan
->hotplug_ports
) ||
508 vlan
->n_ports
|| vlan
->node
.version
!= -1)
511 vlist_delete(&bst
->dev
.vlans
, &vlan
->node
);
517 device_remove_user(&bm
->dev
);
518 uloop_timeout_cancel(&bm
->check_timer
);
521 * When reloading the config and moving a device from one bridge to
522 * another, the other bridge may have tried to claim this device
523 * before it was removed here.
524 * Ensure that claiming the device is retried by toggling its present
528 device_set_present(dev
, false);
529 device_set_present(dev
, true);
538 bridge_check_retry(struct bridge_state
*bst
)
543 uloop_timeout_set(&bst
->retry
, 100);
547 bridge_member_check_cb(struct uloop_timeout
*t
)
549 struct bridge_member
*bm
;
550 struct bridge_state
*bst
;
552 bm
= container_of(t
, struct bridge_member
, check_timer
);
555 if (system_bridge_vlan_check(&bst
->dev
, bm
->dev
.dev
->ifname
) <= 0)
558 bridge_disable_member(bm
, true);
559 bridge_enable_member(bm
);
563 bridge_member_cb(struct device_user
*dep
, enum device_event ev
)
565 struct bridge_member
*bm
= container_of(dep
, struct bridge_member
, dev
);
566 struct bridge_state
*bst
= bm
->bst
;
567 struct device
*dev
= dep
->dev
;
571 assert(!bm
->present
);
576 if (bst
->n_present
== 1)
577 device_set_present(&bst
->dev
, true);
579 case DEV_EVENT_AUTH_UP
:
580 if (!bst
->dev
.active
)
583 if (bridge_enable_member(bm
))
587 * Adding a bridge member can overwrite the bridge mtu
588 * in the kernel, apply the bridge settings in case the
591 system_if_apply_settings(&bst
->dev
, &bst
->dev
.settings
,
592 DEV_OPT_MTU
| DEV_OPT_MTU6
);
594 case DEV_EVENT_LINK_UP
:
596 uloop_timeout_set(&bm
->check_timer
, 1000);
598 case DEV_EVENT_LINK_DOWN
:
599 if (!dev
->settings
.auth
)
602 bridge_disable_member(bm
, true);
604 case DEV_EVENT_REMOVE
:
606 vlist_delete(&bst
->members
, &bm
->node
);
611 bridge_remove_member(bm
);
620 bridge_set_down(struct bridge_state
*bst
)
622 struct bridge_member
*bm
;
624 bst
->set_state(&bst
->dev
, false);
626 vlist_for_each_element(&bst
->members
, bm
, node
)
627 bridge_disable_member(bm
, false);
629 bridge_disable_interface(bst
);
635 bridge_set_up(struct bridge_state
*bst
)
637 struct bridge_member
*bm
;
640 bst
->has_vlans
= !avl_is_empty(&bst
->dev
.vlans
.avl
);
641 if (!bst
->n_present
) {
642 if (!bst
->force_active
)
645 ret
= bridge_enable_interface(bst
);
651 vlist_for_each_element(&bst
->members
, bm
, node
)
652 bridge_enable_member(bm
);
653 bridge_check_retry(bst
);
655 if (!bst
->force_active
&& !bst
->n_present
) {
656 /* initialization of all member interfaces failed */
657 bridge_disable_interface(bst
);
658 device_set_present(&bst
->dev
, false);
662 bridge_reset_primary(bst
);
663 ret
= bst
->set_state(&bst
->dev
, true);
665 bridge_set_down(bst
);
671 bridge_set_state(struct device
*dev
, bool up
)
673 struct bridge_state
*bst
;
675 bst
= container_of(dev
, struct bridge_state
, dev
);
678 return bridge_set_up(bst
);
680 return bridge_set_down(bst
);
683 static struct bridge_member
*
684 bridge_create_member(struct bridge_state
*bst
, const char *name
,
685 struct device
*dev
, bool hotplug
)
687 struct bridge_member
*bm
;
689 bm
= calloc(1, sizeof(*bm
) + strlen(name
) + 1);
694 bm
->dev
.cb
= bridge_member_cb
;
695 bm
->dev
.hotplug
= hotplug
;
696 bm
->check_timer
.cb
= bridge_member_check_cb
;
697 strcpy(bm
->name
, name
);
699 vlist_add(&bst
->members
, &bm
->node
, bm
->name
);
701 * Need to look up the bridge member again as the above
702 * created pointer will be freed in case the bridge member
705 bm
= vlist_find(&bst
->members
, name
, bm
, node
);
707 bm
->node
.version
= -1;
713 bridge_member_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
714 struct vlist_node
*node_old
)
716 struct bridge_member
*bm
;
720 bm
= container_of(node_new
, struct bridge_member
, node
);
729 device_add_user(&bm
->dev
, dev
);
734 bm
= container_of(node_old
, struct bridge_member
, node
);
735 bridge_free_member(bm
);
741 bridge_add_member(struct bridge_state
*bst
, const char *name
)
745 dev
= device_get(name
, true);
749 bridge_create_member(bst
, name
, dev
, false);
752 static struct bridge_vlan
*
753 bridge_hotplug_get_vlan(struct bridge_state
*bst
, uint16_t vid
)
755 struct bridge_vlan
*vlan
;
757 vlan
= vlist_find(&bst
->dev
.vlans
, &vid
, vlan
, node
);
761 vlan
= calloc(1, sizeof(*vlan
));
764 INIT_LIST_HEAD(&vlan
->hotplug_ports
);
765 vlist_add(&bst
->dev
.vlans
, &vlan
->node
, &vlan
->vid
);
766 vlan
->node
.version
= -1;
771 static struct bridge_vlan_hotplug_port
*
772 bridge_hotplug_get_vlan_port(struct bridge_vlan
*vlan
, const char *ifname
)
774 struct bridge_vlan_hotplug_port
*port
;
776 list_for_each_entry(port
, &vlan
->hotplug_ports
, list
)
777 if (!strcmp(port
->port
.ifname
, ifname
))
784 bridge_hotplug_set_member_vlans(struct bridge_state
*bst
, struct blob_attr
*vlans
,
785 const char *ifname
, struct bridge_member
*bm
, bool add
)
787 struct bridge_vlan
*vlan
;
788 struct blob_attr
*cur
;
794 blobmsg_for_each_attr(cur
, vlans
, rem
) {
795 struct bridge_vlan_hotplug_port
*port
;
796 uint16_t flags
= BRVLAN_F_UNTAGGED
;
801 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
804 vid
= strtoul(blobmsg_get_string(cur
), &end
, 0);
805 if (!vid
|| vid
> 4095)
808 vlan
= bridge_hotplug_get_vlan(bst
, vid
);
813 vlan
->pending
= false;
814 bridge_set_vlan_state(bst
, vlan
, true);
821 for (end
++; *end
; end
++) {
824 flags
&= ~BRVLAN_F_UNTAGGED
;
827 flags
|= BRVLAN_F_PVID
;
833 port
= bridge_hotplug_get_vlan_port(vlan
, ifname
);
838 __bridge_set_member_vlan(bm
, vlan
, &port
->port
, false);
839 list_del(&port
->list
);
845 if (port
->port
.flags
== flags
)
848 __bridge_set_member_vlan(bm
, vlan
, &port
->port
, false);
849 port
->port
.flags
= flags
;
850 __bridge_set_member_vlan(bm
, vlan
, &port
->port
, true);
854 port
= calloc_a(sizeof(*port
), &name_buf
, strlen(ifname
) + 1);
858 port
->port
.flags
= flags
;
859 port
->port
.ifname
= strcpy(name_buf
, ifname
);
860 list_add_tail(&port
->list
, &vlan
->hotplug_ports
);
865 __bridge_set_member_vlan(bm
, vlan
, &port
->port
, true);
870 bridge_hotplug_add(struct device
*dev
, struct device
*member
, struct blob_attr
*vlan
)
872 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
873 struct bridge_member
*bm
;
875 bm
= vlist_find(&bst
->members
, member
->ifname
, bm
, node
);
876 bridge_hotplug_set_member_vlans(bst
, vlan
, member
->ifname
, bm
, true);
878 bridge_create_member(bst
, member
->ifname
, member
, true);
884 bridge_hotplug_del(struct device
*dev
, struct device
*member
, struct blob_attr
*vlan
)
886 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
887 struct bridge_member
*bm
;
889 bm
= vlist_find(&bst
->members
, member
->ifname
, bm
, node
);
891 return UBUS_STATUS_NOT_FOUND
;
893 bridge_hotplug_set_member_vlans(bst
, vlan
, member
->ifname
, bm
, false);
894 if (!bm
->dev
.hotplug
)
897 vlist_delete(&bst
->members
, &bm
->node
);
902 bridge_hotplug_prepare(struct device
*dev
, struct device
**bridge_dev
)
904 struct bridge_state
*bst
;
909 bst
= container_of(dev
, struct bridge_state
, dev
);
910 bst
->force_active
= true;
911 device_set_present(&bst
->dev
, true);
916 static const struct device_hotplug_ops bridge_ops
= {
917 .prepare
= bridge_hotplug_prepare
,
918 .add
= bridge_hotplug_add
,
919 .del
= bridge_hotplug_del
923 bridge_free(struct device
*dev
)
925 struct bridge_state
*bst
;
927 bst
= container_of(dev
, struct bridge_state
, dev
);
928 vlist_flush_all(&bst
->members
);
929 vlist_flush_all(&dev
->vlans
);
930 kvlist_free(&dev
->vlan_aliases
);
931 free(bst
->config_data
);
936 bridge_dump_port(struct blob_buf
*b
, struct bridge_vlan_port
*port
)
938 bool tagged
= !(port
->flags
& BRVLAN_F_UNTAGGED
);
939 bool pvid
= (port
->flags
& BRVLAN_F_PVID
);
941 blobmsg_printf(b
, "%s%s%s%s\n", port
->ifname
,
942 tagged
|| pvid
? ":" : "",
948 bridge_dump_vlan(struct blob_buf
*b
, struct bridge_vlan
*vlan
)
950 struct bridge_vlan_hotplug_port
*port
;
954 c
= blobmsg_open_table(b
, NULL
);
956 blobmsg_add_u32(b
, "id", vlan
->vid
);
957 blobmsg_add_u8(b
, "local", vlan
->local
);
959 p
= blobmsg_open_array(b
, "ports");
961 for (i
= 0; i
< vlan
->n_ports
; i
++)
962 bridge_dump_port(b
, &vlan
->ports
[i
]);
964 list_for_each_entry(port
, &vlan
->hotplug_ports
, list
)
965 bridge_dump_port(b
, &port
->port
);
967 blobmsg_close_array(b
, p
);
969 blobmsg_close_table(b
, c
);
973 bridge_dump_info(struct device
*dev
, struct blob_buf
*b
)
975 struct bridge_state
*bst
;
976 struct bridge_member
*bm
;
977 struct bridge_vlan
*vlan
;
980 bst
= container_of(dev
, struct bridge_state
, dev
);
982 system_if_dump_info(dev
, b
);
983 list
= blobmsg_open_array(b
, "bridge-members");
985 vlist_for_each_element(&bst
->members
, bm
, node
) {
986 if (bm
->dev
.dev
->hidden
)
989 blobmsg_add_string(b
, NULL
, bm
->dev
.dev
->ifname
);
992 blobmsg_close_array(b
, list
);
994 if (avl_is_empty(&dev
->vlans
.avl
))
997 list
= blobmsg_open_array(b
, "bridge-vlans");
999 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
1000 bridge_dump_vlan(b
, vlan
);
1002 blobmsg_close_array(b
, list
);
1006 bridge_config_init(struct device
*dev
)
1008 struct bridge_state
*bst
;
1009 struct bridge_vlan
*vlan
;
1010 struct blob_attr
*cur
;
1013 bst
= container_of(dev
, struct bridge_state
, dev
);
1015 if (bst
->config
.bridge_empty
) {
1016 bst
->force_active
= true;
1017 device_set_present(&bst
->dev
, true);
1021 vlist_update(&bst
->members
);
1023 blobmsg_for_each_attr(cur
, bst
->ports
, rem
) {
1024 bridge_add_member(bst
, blobmsg_data(cur
));
1028 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
1029 for (i
= 0; i
< vlan
->n_ports
; i
++)
1030 bridge_add_member(bst
, vlan
->ports
[i
].ifname
);
1032 vlist_flush(&bst
->members
);
1033 bridge_check_retry(bst
);
1037 bridge_apply_settings(struct bridge_state
*bst
, struct blob_attr
**tb
)
1039 struct bridge_config
*cfg
= &bst
->config
;
1040 struct blob_attr
*cur
;
1043 memset(cfg
, 0, sizeof(*cfg
));
1045 cfg
->stp_kernel
= false;
1046 cfg
->robustness
= 2;
1047 cfg
->igmp_snoop
= false;
1048 cfg
->multicast_querier
= false;
1049 cfg
->query_interval
= 12500;
1050 cfg
->query_response_interval
= 1000;
1051 cfg
->last_member_interval
= 100;
1052 cfg
->hash_max
= 512;
1053 cfg
->bridge_empty
= false;
1054 cfg
->priority
= 0x7FFF;
1055 cfg
->vlan_filtering
= false;
1057 cfg
->forward_delay
= 8;
1059 cfg
->hello_time
= 1;
1061 if ((cur
= tb
[BRIDGE_ATTR_STP
]))
1062 cfg
->stp
= blobmsg_get_bool(cur
);
1064 if ((cur
= tb
[BRIDGE_ATTR_STP_KERNEL
]))
1065 cfg
->stp
= blobmsg_get_bool(cur
);
1067 if ((cur
= tb
[BRIDGE_ATTR_STP_PROTO
]))
1068 cfg
->stp_proto
= blobmsg_get_string(cur
);
1070 if ((cur
= tb
[BRIDGE_ATTR_FORWARD_DELAY
]))
1071 cfg
->forward_delay
= blobmsg_get_u32(cur
);
1073 if ((cur
= tb
[BRIDGE_ATTR_PRIORITY
]))
1074 cfg
->priority
= blobmsg_get_u32(cur
);
1076 if ((cur
= tb
[BRIDGE_ATTR_IGMP_SNOOP
]))
1077 cfg
->multicast_querier
= cfg
->igmp_snoop
= blobmsg_get_bool(cur
);
1079 if ((cur
= tb
[BRIDGE_ATTR_MULTICAST_QUERIER
]))
1080 cfg
->multicast_querier
= blobmsg_get_bool(cur
);
1082 if ((cur
= tb
[BRIDGE_ATTR_HASH_MAX
]))
1083 cfg
->hash_max
= blobmsg_get_u32(cur
);
1085 if ((cur
= tb
[BRIDGE_ATTR_ROBUSTNESS
])) {
1086 cfg
->robustness
= blobmsg_get_u32(cur
);
1087 cfg
->flags
|= BRIDGE_OPT_ROBUSTNESS
;
1090 if ((cur
= tb
[BRIDGE_ATTR_QUERY_INTERVAL
])) {
1091 cfg
->query_interval
= blobmsg_get_u32(cur
);
1092 cfg
->flags
|= BRIDGE_OPT_QUERY_INTERVAL
;
1095 if ((cur
= tb
[BRIDGE_ATTR_QUERY_RESPONSE_INTERVAL
])) {
1096 cfg
->query_response_interval
= blobmsg_get_u32(cur
);
1097 cfg
->flags
|= BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
;
1100 if ((cur
= tb
[BRIDGE_ATTR_LAST_MEMBER_INTERVAL
])) {
1101 cfg
->last_member_interval
= blobmsg_get_u32(cur
);
1102 cfg
->flags
|= BRIDGE_OPT_LAST_MEMBER_INTERVAL
;
1105 if ((cur
= tb
[BRIDGE_ATTR_AGEING_TIME
])) {
1106 cfg
->ageing_time
= blobmsg_get_u32(cur
);
1107 cfg
->flags
|= BRIDGE_OPT_AGEING_TIME
;
1110 if ((cur
= tb
[BRIDGE_ATTR_HELLO_TIME
]))
1111 cfg
->hello_time
= blobmsg_get_u32(cur
);
1113 if ((cur
= tb
[BRIDGE_ATTR_MAX_AGE
]))
1114 cfg
->max_age
= blobmsg_get_u32(cur
);
1116 if ((cur
= tb
[BRIDGE_ATTR_BRIDGE_EMPTY
]))
1117 cfg
->bridge_empty
= blobmsg_get_bool(cur
);
1119 if ((cur
= tb
[BRIDGE_ATTR_VLAN_FILTERING
]))
1120 cfg
->vlan_filtering
= blobmsg_get_bool(cur
);
1123 static enum dev_change_type
1124 bridge_reload(struct device
*dev
, struct blob_attr
*attr
)
1126 struct blob_attr
*tb_dev
[__DEV_ATTR_MAX
];
1127 struct blob_attr
*tb_br
[__BRIDGE_ATTR_MAX
];
1128 enum dev_change_type ret
= DEV_CONFIG_APPLIED
;
1130 struct bridge_state
*bst
;
1132 BUILD_BUG_ON(sizeof(diff
) < __BRIDGE_ATTR_MAX
/ 8);
1133 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ 8);
1135 bst
= container_of(dev
, struct bridge_state
, dev
);
1136 attr
= blob_memdup(attr
);
1138 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, tb_dev
,
1139 blob_data(attr
), blob_len(attr
));
1140 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, tb_br
,
1141 blob_data(attr
), blob_len(attr
));
1143 if (tb_dev
[DEV_ATTR_MACADDR
])
1144 bst
->primary_port
= NULL
;
1146 bst
->ports
= tb_br
[BRIDGE_ATTR_PORTS
];
1147 device_init_settings(dev
, tb_dev
);
1148 bridge_apply_settings(bst
, tb_br
);
1150 if (bst
->config_data
) {
1151 struct blob_attr
*otb_dev
[__DEV_ATTR_MAX
];
1152 struct blob_attr
*otb_br
[__BRIDGE_ATTR_MAX
];
1154 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb_dev
,
1155 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
1158 uci_blob_diff(tb_dev
, otb_dev
, &device_attr_list
, &diff
);
1160 ret
= DEV_CONFIG_RESTART
;
1162 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, otb_br
,
1163 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
1166 uci_blob_diff(tb_br
, otb_br
, &bridge_attr_list
, &diff
);
1167 if (diff
& ~(1 << BRIDGE_ATTR_PORTS
))
1168 ret
= DEV_CONFIG_RESTART
;
1170 bridge_config_init(dev
);
1173 free(bst
->config_data
);
1174 bst
->config_data
= attr
;
1179 bridge_retry_members(struct uloop_timeout
*timeout
)
1181 struct bridge_state
*bst
= container_of(timeout
, struct bridge_state
, retry
);
1182 struct bridge_member
*bm
;
1185 vlist_for_each_element(&bst
->members
, bm
, node
) {
1189 if (!bm
->dev
.dev
->present
)
1194 bridge_enable_member(bm
);
1198 static int bridge_avl_cmp_u16(const void *k1
, const void *k2
, void *ptr
)
1200 const uint16_t *i1
= k1
, *i2
= k2
;
1206 bridge_vlan_equal(struct bridge_vlan
*v1
, struct bridge_vlan
*v2
)
1210 if (v1
->n_ports
!= v2
->n_ports
)
1213 for (i
= 0; i
< v1
->n_ports
; i
++)
1214 if (v1
->ports
[i
].flags
!= v2
->ports
[i
].flags
||
1215 strcmp(v1
->ports
[i
].ifname
, v2
->ports
[i
].ifname
) != 0)
1222 bridge_vlan_free(struct bridge_vlan
*vlan
)
1224 struct bridge_vlan_hotplug_port
*port
, *tmp
;
1229 list_for_each_entry_safe(port
, tmp
, &vlan
->hotplug_ports
, list
)
1236 bridge_vlan_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1237 struct vlist_node
*node_old
)
1239 struct bridge_state
*bst
= container_of(tree
, struct bridge_state
, dev
.vlans
);
1240 struct bridge_vlan
*vlan_new
= NULL
, *vlan_old
= NULL
;
1242 if (!bst
->has_vlans
|| !bst
->active
)
1246 vlan_old
= container_of(node_old
, struct bridge_vlan
, node
);
1248 vlan_new
= container_of(node_new
, struct bridge_vlan
, node
);
1250 if (node_new
&& node_old
&& bridge_vlan_equal(vlan_old
, vlan_new
)) {
1251 list_splice_init(&vlan_old
->hotplug_ports
, &vlan_new
->hotplug_ports
);
1256 bridge_set_vlan_state(bst
, vlan_old
, false);
1258 if (node_old
&& node_new
)
1259 list_splice_init(&vlan_old
->hotplug_ports
, &vlan_new
->hotplug_ports
);
1262 vlan_new
->pending
= true;
1264 bst
->dev
.config_pending
= true;
1267 bridge_vlan_free(vlan_old
);
1271 bridge_dev_vlan_update(struct device
*dev
)
1273 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
1274 struct bridge_vlan
*vlan
;
1276 vlist_for_each_element(&dev
->vlans
, vlan
, node
) {
1280 vlan
->pending
= false;
1281 bridge_set_vlan_state(bst
, vlan
, true);
1285 static struct device
*
1286 bridge_create(const char *name
, struct device_type
*devtype
,
1287 struct blob_attr
*attr
)
1289 struct bridge_state
*bst
;
1290 struct device
*dev
= NULL
;
1292 bst
= calloc(1, sizeof(*bst
));
1298 if (device_init(dev
, devtype
, name
) < 0) {
1299 device_cleanup(dev
);
1304 dev
->config_pending
= true;
1305 bst
->retry
.cb
= bridge_retry_members
;
1307 bst
->set_state
= dev
->set_state
;
1308 dev
->set_state
= bridge_set_state
;
1310 dev
->hotplug_ops
= &bridge_ops
;
1312 vlist_init(&bst
->members
, avl_strcmp
, bridge_member_update
);
1313 bst
->members
.keep_old
= true;
1315 vlist_init(&dev
->vlans
, bridge_avl_cmp_u16
, bridge_vlan_update
);
1317 bridge_reload(dev
, attr
);
1322 static void __init
bridge_device_type_init(void)
1324 device_type_add(&bridge_device_type
);