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
;
134 struct device_vlan_range
*extra_vlan
;
143 bridge_reset_primary(struct bridge_state
*bst
)
145 struct bridge_member
*bm
;
147 if (!bst
->primary_port
&&
148 (bst
->dev
.settings
.flags
& DEV_OPT_MACADDR
))
151 bst
->primary_port
= NULL
;
152 bst
->dev
.settings
.flags
&= ~DEV_OPT_MACADDR
;
153 vlist_for_each_element(&bst
->members
, bm
, node
) {
159 bst
->primary_port
= bm
;
160 if (bm
->dev
.dev
->settings
.flags
& DEV_OPT_MACADDR
)
161 macaddr
= bm
->dev
.dev
->settings
.macaddr
;
163 macaddr
= bm
->dev
.dev
->orig_settings
.macaddr
;
164 memcpy(bst
->dev
.settings
.macaddr
, macaddr
, 6);
165 bst
->dev
.settings
.flags
|= DEV_OPT_MACADDR
;
170 static struct bridge_vlan_port
*
171 bridge_find_vlan_member_port(struct bridge_member
*bm
, struct bridge_vlan
*vlan
)
173 struct bridge_vlan_hotplug_port
*port
;
174 const char *ifname
= bm
->dev
.dev
->ifname
;
177 for (i
= 0; i
< vlan
->n_ports
; i
++) {
178 if (strcmp(vlan
->ports
[i
].ifname
, ifname
) != 0)
181 return &vlan
->ports
[i
];
184 list_for_each_entry(port
, &vlan
->hotplug_ports
, list
) {
185 if (strcmp(port
->port
.ifname
, ifname
) != 0)
195 bridge_member_vlan_is_pvid(struct bridge_member
*bm
, struct bridge_vlan_port
*port
)
197 return (!bm
->pvid
&& (port
->flags
& BRVLAN_F_UNTAGGED
)) ||
198 (port
->flags
& BRVLAN_F_PVID
);
202 __bridge_set_member_vlan(struct bridge_member
*bm
, struct bridge_vlan
*vlan
,
203 struct bridge_vlan_port
*port
, bool add
)
208 if (bm
->pvid
== vlan
->vid
)
209 flags
|= BRVLAN_F_PVID
;
211 system_bridge_vlan(port
->ifname
, vlan
->vid
, -1, add
, flags
);
215 bridge_set_member_vlan(struct bridge_member
*bm
, struct bridge_vlan
*vlan
, bool add
)
217 struct bridge_vlan_port
*port
;
222 port
= bridge_find_vlan_member_port(bm
, vlan
);
226 if (bridge_member_vlan_is_pvid(bm
, port
))
227 bm
->pvid
= vlan
->vid
;
229 __bridge_set_member_vlan(bm
, vlan
, port
, add
);
233 bridge_set_local_vlan(struct bridge_state
*bst
, struct bridge_vlan
*vlan
, bool add
)
235 if (!vlan
->local
&& add
)
238 system_bridge_vlan(bst
->dev
.ifname
, vlan
->vid
, -1, add
, BRVLAN_F_SELF
);
242 bridge_set_local_vlans(struct bridge_state
*bst
, bool add
)
244 struct bridge_vlan
*vlan
;
246 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
247 bridge_set_local_vlan(bst
, vlan
, add
);
250 static struct bridge_vlan
*
251 bridge_recalc_member_pvid(struct bridge_member
*bm
)
253 struct bridge_state
*bst
= bm
->bst
;
254 struct bridge_vlan_port
*port
;
255 struct bridge_vlan
*vlan
, *ret
= NULL
;
257 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
) {
258 port
= bridge_find_vlan_member_port(bm
, vlan
);
262 if (!bridge_member_vlan_is_pvid(bm
, port
))
266 if (port
->flags
& BRVLAN_F_PVID
)
274 bridge_set_vlan_state(struct bridge_state
*bst
, struct bridge_vlan
*vlan
, bool add
)
276 struct bridge_member
*bm
;
277 struct bridge_vlan
*vlan2
;
279 bridge_set_local_vlan(bst
, vlan
, add
);
281 vlist_for_each_element(&bst
->members
, bm
, node
) {
282 struct bridge_vlan_port
*port
;
285 port
= bridge_find_vlan_member_port(bm
, vlan
);
290 if (bridge_member_vlan_is_pvid(bm
, port
))
291 bm
->pvid
= vlan
->vid
;
292 } else if (bm
->pvid
== vlan
->vid
) {
293 vlan2
= bridge_recalc_member_pvid(bm
);
294 if (vlan2
&& vlan2
->vid
!= vlan
->vid
) {
295 bridge_set_member_vlan(bm
, vlan2
, false);
296 bridge_set_member_vlan(bm
, vlan2
, true);
298 new_pvid
= vlan2
? vlan2
->vid
: 0;
304 __bridge_set_member_vlan(bm
, vlan
, port
, add
);
311 bridge_disable_member(struct bridge_member
*bm
, bool keep_dev
)
313 struct bridge_state
*bst
= bm
->bst
;
314 struct bridge_vlan
*vlan
;
316 if (!bm
->present
|| !bm
->active
)
320 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
321 bridge_set_member_vlan(bm
, vlan
, false);
323 system_bridge_delif(&bst
->dev
, bm
->dev
.dev
);
325 device_release(&bm
->dev
);
327 device_broadcast_event(&bst
->dev
, DEV_EVENT_TOPO_CHANGE
);
332 static void bridge_stp_notify(struct bridge_state
*bst
)
334 struct bridge_config
*cfg
= &bst
->config
;
336 if (!cfg
->stp
|| cfg
->stp_kernel
)
339 blob_buf_init(&b
, 0);
340 blobmsg_add_string(&b
, "name", bst
->dev
.ifname
);
342 blobmsg_add_string(&b
, "proto", cfg
->stp_proto
);
343 blobmsg_add_u32(&b
, "forward_delay", cfg
->forward_delay
);
344 blobmsg_add_u32(&b
, "hello_time", cfg
->hello_time
);
345 blobmsg_add_u32(&b
, "max_age", cfg
->max_age
);
346 if (cfg
->flags
& BRIDGE_OPT_AGEING_TIME
)
347 blobmsg_add_u32(&b
, "ageing_time", cfg
->ageing_time
);
348 netifd_ubus_device_notify("stp_init", b
.head
, 1000);
352 bridge_enable_interface(struct bridge_state
*bst
)
354 struct device
*dev
= &bst
->dev
;
360 bridge_stp_notify(bst
);
361 ret
= system_bridge_addbr(dev
, &bst
->config
);
365 if (bst
->has_vlans
) {
366 /* delete default VLAN 1 */
367 system_bridge_vlan(bst
->dev
.ifname
, 1, -1, false, BRVLAN_F_SELF
);
369 bridge_set_local_vlans(bst
, true);
372 for (i
= 0; i
< dev
->n_extra_vlan
; i
++)
373 system_bridge_vlan(dev
->ifname
, dev
->extra_vlan
[i
].start
,
374 dev
->extra_vlan
[i
].end
, true, BRVLAN_F_SELF
);
381 bridge_stp_init(struct device
*dev
)
383 struct bridge_state
*bst
;
385 bst
= container_of(dev
, struct bridge_state
, dev
);
386 if (!bst
->config
.stp
|| !bst
->active
)
389 bridge_stp_notify(bst
);
390 system_bridge_set_stp_state(&bst
->dev
, false);
391 system_bridge_set_stp_state(&bst
->dev
, true);
395 bridge_disable_interface(struct bridge_state
*bst
)
400 system_bridge_delbr(&bst
->dev
);
404 static struct bridge_vlan
*
405 bridge_hotplug_get_vlan(struct bridge_state
*bst
, uint16_t vid
, bool create
)
407 struct bridge_vlan
*vlan
;
409 vlan
= vlist_find(&bst
->dev
.vlans
, &vid
, vlan
, node
);
413 vlan
= calloc(1, sizeof(*vlan
));
416 INIT_LIST_HEAD(&vlan
->hotplug_ports
);
417 vlist_add(&bst
->dev
.vlans
, &vlan
->node
, &vlan
->vid
);
418 vlan
->node
.version
= -1;
423 static struct bridge_vlan_hotplug_port
*
424 bridge_hotplug_get_vlan_port(struct bridge_vlan
*vlan
, const char *ifname
)
426 struct bridge_vlan_hotplug_port
*port
;
428 list_for_each_entry(port
, &vlan
->hotplug_ports
, list
)
429 if (!strcmp(port
->port
.ifname
, ifname
))
436 bridge_hotplug_set_member_vlans(struct bridge_state
*bst
, struct blob_attr
*vlans
,
437 struct bridge_member
*bm
, bool add
, bool untracked
)
439 const char *ifname
= bm
->name
;
440 struct device_vlan_range
*r
;
441 struct bridge_vlan
*vlan
;
442 struct blob_attr
*cur
;
450 bm
->n_extra_vlan
= 0;
451 n_vlans
= blobmsg_check_array(vlans
, BLOBMSG_TYPE_STRING
);
455 bm
->extra_vlan
= realloc(bm
->extra_vlan
, n_vlans
* sizeof(*bm
->extra_vlan
));
458 blobmsg_for_each_attr(cur
, vlans
, rem
) {
459 struct bridge_vlan_hotplug_port
*port
;
460 unsigned int vid
, vid_end
;
465 if (blobmsg_type(cur
) != BLOBMSG_TYPE_STRING
)
468 vid
= strtoul(blobmsg_get_string(cur
), &end
, 0);
470 if (!vid
|| vid
> 4095)
474 vid_end
= strtoul(end
+ 1, &end
, 0);
483 for (end
++; *end
; end
++) {
486 flags
|= BRVLAN_F_UNTAGGED
;
489 flags
|= BRVLAN_F_PVID
;
495 vlan
= bridge_hotplug_get_vlan(bst
, vid
, !!flags
);
496 if (!vlan
|| vid_end
> vid
|| untracked
) {
499 r
= &bm
->extra_vlan
[bm
->n_extra_vlan
++];
504 system_bridge_vlan(ifname
, vid
, vid_end
, true, flags
);
505 } else if (bm
->active
) {
506 system_bridge_vlan(ifname
, vid
, vid_end
, false, 0);
512 vlan
->pending
= false;
513 bridge_set_vlan_state(bst
, vlan
, true);
516 port
= bridge_hotplug_get_vlan_port(vlan
, ifname
);
521 __bridge_set_member_vlan(bm
, vlan
, &port
->port
, false);
522 list_del(&port
->list
);
528 if (port
->port
.flags
== flags
)
531 __bridge_set_member_vlan(bm
, vlan
, &port
->port
, false);
532 port
->port
.flags
= flags
;
533 __bridge_set_member_vlan(bm
, vlan
, &port
->port
, true);
537 port
= calloc_a(sizeof(*port
), &name_buf
, strlen(ifname
) + 1);
541 port
->port
.flags
= flags
;
542 port
->port
.ifname
= strcpy(name_buf
, ifname
);
543 list_add_tail(&port
->list
, &vlan
->hotplug_ports
);
548 __bridge_set_member_vlan(bm
, vlan
, &port
->port
, true);
554 bridge_member_add_extra_vlans(struct bridge_member
*bm
)
556 struct device
*dev
= bm
->dev
.dev
;
559 for (i
= 0; i
< dev
->n_extra_vlan
; i
++)
560 system_bridge_vlan(dev
->ifname
, dev
->extra_vlan
[i
].start
,
561 dev
->extra_vlan
[i
].end
, true, 0);
562 for (i
= 0; i
< bm
->n_extra_vlan
; i
++)
563 system_bridge_vlan(dev
->ifname
, bm
->extra_vlan
[i
].start
,
564 bm
->extra_vlan
[i
].end
, true, 0);
568 bridge_member_enable_vlans(struct bridge_member
*bm
)
570 struct bridge_state
*bst
= bm
->bst
;
571 struct device
*dev
= bm
->dev
.dev
;
572 struct bridge_vlan
*vlan
;
574 if (dev
->settings
.auth
) {
575 bridge_hotplug_set_member_vlans(bst
, dev
->config_auth_vlans
, bm
,
576 !dev
->auth_status
, true);
577 bridge_hotplug_set_member_vlans(bst
, dev
->auth_vlans
, bm
,
578 dev
->auth_status
, true);
581 if (dev
->settings
.auth
&& !dev
->auth_status
)
584 bridge_member_add_extra_vlans(bm
);
585 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
586 bridge_set_member_vlan(bm
, vlan
, true);
590 bridge_enable_member(struct bridge_member
*bm
)
592 struct bridge_state
*bst
= bm
->bst
;
599 ret
= bridge_enable_interface(bst
);
603 /* Disable IPv6 for bridge members */
604 if (!(bm
->dev
.dev
->settings
.flags
& DEV_OPT_IPV6
)) {
605 bm
->dev
.dev
->settings
.ipv6
= 0;
606 bm
->dev
.dev
->settings
.flags
|= DEV_OPT_IPV6
;
609 ret
= device_claim(&bm
->dev
);
614 if (dev
->settings
.auth
&& !bst
->has_vlans
&& !dev
->auth_status
)
618 ret
= system_bridge_addif(&bst
->dev
, bm
->dev
.dev
);
620 D(DEVICE
, "Bridge device %s could not be added\n", bm
->dev
.dev
->ifname
);
627 if (bst
->has_vlans
) {
628 /* delete default VLAN 1 */
629 system_bridge_vlan(bm
->dev
.dev
->ifname
, 1, -1, false, 0);
631 bridge_member_enable_vlans(bm
);
634 device_set_present(&bst
->dev
, true);
635 if (!dev
->settings
.auth
|| dev
->auth_status
)
636 device_broadcast_event(&bst
->dev
, DEV_EVENT_TOPO_CHANGE
);
644 device_release(&bm
->dev
);
650 bridge_remove_member(struct bridge_member
*bm
)
652 struct bridge_state
*bst
= bm
->bst
;
658 bridge_disable_member(bm
, false);
661 bm
->bst
->n_present
--;
663 if (bm
== bst
->primary_port
)
664 bridge_reset_primary(bst
);
666 if (bst
->config
.bridge_empty
)
669 bst
->force_active
= false;
670 if (bst
->n_present
== 0)
671 device_set_present(&bst
->dev
, false);
675 bridge_free_member(struct bridge_member
*bm
)
677 struct bridge_state
*bst
= bm
->bst
;
678 struct device
*dev
= bm
->dev
.dev
;
679 const char *ifname
= dev
->ifname
;
680 struct bridge_vlan
*vlan
;
682 bridge_remove_member(bm
);
685 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
) {
686 struct bridge_vlan_hotplug_port
*port
, *tmp
;
687 bool free_port
= false;
689 list_for_each_entry_safe(port
, tmp
, &vlan
->hotplug_ports
, list
) {
690 if (strcmp(port
->port
.ifname
, ifname
) != 0)
693 list_del(&port
->list
);
698 if (!free_port
|| !list_empty(&vlan
->hotplug_ports
) ||
699 vlan
->n_ports
|| vlan
->node
.version
!= -1)
702 vlist_delete(&bst
->dev
.vlans
, &vlan
->node
);
706 device_remove_user(&bm
->dev
);
707 uloop_timeout_cancel(&bm
->check_timer
);
710 * When reloading the config and moving a device from one bridge to
711 * another, the other bridge may have tried to claim this device
712 * before it was removed here.
713 * Ensure that claiming the device is retried by toggling its present
717 device_set_present(dev
, false);
718 device_set_present(dev
, true);
725 bridge_check_retry(struct bridge_state
*bst
)
730 uloop_timeout_set(&bst
->retry
, 100);
734 bridge_member_check_cb(struct uloop_timeout
*t
)
736 struct bridge_member
*bm
;
737 struct bridge_state
*bst
;
739 bm
= container_of(t
, struct bridge_member
, check_timer
);
742 if (system_bridge_vlan_check(&bst
->dev
, bm
->dev
.dev
->ifname
) <= 0)
745 bridge_disable_member(bm
, true);
746 bridge_enable_member(bm
);
750 bridge_member_cb(struct device_user
*dep
, enum device_event ev
)
752 struct bridge_member
*bm
= container_of(dep
, struct bridge_member
, dev
);
753 struct bridge_state
*bst
= bm
->bst
;
754 struct device
*dev
= dep
->dev
;
758 assert(!bm
->present
);
763 if (bst
->n_present
== 1)
764 device_set_present(&bst
->dev
, true);
766 case DEV_EVENT_AUTH_UP
:
767 if (!bst
->dev
.active
)
770 if (bridge_enable_member(bm
))
774 * Adding a bridge member can overwrite the bridge mtu
775 * in the kernel, apply the bridge settings in case the
778 system_if_apply_settings(&bst
->dev
, &bst
->dev
.settings
,
779 DEV_OPT_MTU
| DEV_OPT_MTU6
);
781 case DEV_EVENT_LINK_UP
:
785 if (dev
->settings
.auth
)
786 bridge_enable_member(bm
);
788 uloop_timeout_set(&bm
->check_timer
, 1000);
790 case DEV_EVENT_LINK_DOWN
:
791 if (!dev
->settings
.auth
)
794 bridge_disable_member(bm
, true);
796 case DEV_EVENT_REMOVE
:
798 vlist_delete(&bst
->members
, &bm
->node
);
803 bridge_remove_member(bm
);
812 bridge_set_down(struct bridge_state
*bst
)
814 struct bridge_member
*bm
;
816 bst
->set_state(&bst
->dev
, false);
818 vlist_for_each_element(&bst
->members
, bm
, node
)
819 bridge_disable_member(bm
, false);
821 bridge_disable_interface(bst
);
827 bridge_set_up(struct bridge_state
*bst
)
829 struct bridge_member
*bm
;
832 bst
->has_vlans
= !avl_is_empty(&bst
->dev
.vlans
.avl
);
833 if (!bst
->n_present
) {
834 if (!bst
->force_active
)
837 ret
= bridge_enable_interface(bst
);
843 vlist_for_each_element(&bst
->members
, bm
, node
)
844 bridge_enable_member(bm
);
845 bridge_check_retry(bst
);
847 if (!bst
->force_active
&& !bst
->n_present
) {
848 /* initialization of all member interfaces failed */
849 bridge_disable_interface(bst
);
850 device_set_present(&bst
->dev
, false);
854 bridge_reset_primary(bst
);
855 ret
= bst
->set_state(&bst
->dev
, true);
857 bridge_set_down(bst
);
863 bridge_set_state(struct device
*dev
, bool up
)
865 struct bridge_state
*bst
;
867 bst
= container_of(dev
, struct bridge_state
, dev
);
870 return bridge_set_up(bst
);
872 return bridge_set_down(bst
);
875 static struct bridge_member
*
876 bridge_alloc_member(struct bridge_state
*bst
, const char *name
,
877 struct device
*dev
, bool hotplug
)
879 struct bridge_member
*bm
;
881 bm
= calloc(1, sizeof(*bm
) + strlen(name
) + 1);
886 bm
->dev
.cb
= bridge_member_cb
;
887 bm
->dev
.hotplug
= hotplug
;
888 bm
->check_timer
.cb
= bridge_member_check_cb
;
889 strcpy(bm
->name
, name
);
895 static void bridge_insert_member(struct bridge_member
*bm
, const char *name
)
897 struct bridge_state
*bst
= bm
->bst
;
898 bool hotplug
= bm
->dev
.hotplug
;
900 vlist_add(&bst
->members
, &bm
->node
, bm
->name
);
902 * Need to look up the bridge member again as the above
903 * created pointer will be freed in case the bridge member
906 bm
= vlist_find(&bst
->members
, name
, bm
, node
);
908 bm
->node
.version
= -1;
912 bridge_create_member(struct bridge_state
*bst
, const char *name
,
913 struct device
*dev
, bool hotplug
)
915 struct bridge_member
*bm
;
917 bm
= bridge_alloc_member(bst
, name
, dev
, hotplug
);
919 bridge_insert_member(bm
, name
);
923 bridge_member_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
924 struct vlist_node
*node_old
)
926 struct bridge_member
*bm
;
930 bm
= container_of(node_new
, struct bridge_member
, node
);
939 device_add_user(&bm
->dev
, dev
);
944 bm
= container_of(node_old
, struct bridge_member
, node
);
945 bridge_free_member(bm
);
951 bridge_add_member(struct bridge_state
*bst
, const char *name
)
955 dev
= device_get(name
, true);
959 bridge_create_member(bst
, name
, dev
, false);
963 bridge_hotplug_add(struct device
*dev
, struct device
*member
, struct blob_attr
*vlan
)
965 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
966 struct bridge_member
*bm
;
967 bool new_entry
= false;
969 bm
= vlist_find(&bst
->members
, member
->ifname
, bm
, node
);
972 bm
= bridge_alloc_member(bst
, member
->ifname
, member
, true);
974 bridge_hotplug_set_member_vlans(bst
, vlan
, bm
, true, false);
976 bridge_insert_member(bm
, member
->ifname
);
982 bridge_hotplug_del(struct device
*dev
, struct device
*member
, struct blob_attr
*vlan
)
984 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
985 struct bridge_member
*bm
;
987 bm
= vlist_find(&bst
->members
, member
->ifname
, bm
, node
);
989 return UBUS_STATUS_NOT_FOUND
;
991 bridge_hotplug_set_member_vlans(bst
, vlan
, bm
, false, false);
992 if (!bm
->dev
.hotplug
)
995 vlist_delete(&bst
->members
, &bm
->node
);
1000 bridge_hotplug_prepare(struct device
*dev
, struct device
**bridge_dev
)
1002 struct bridge_state
*bst
;
1007 bst
= container_of(dev
, struct bridge_state
, dev
);
1008 bst
->force_active
= true;
1009 device_set_present(&bst
->dev
, true);
1014 static const struct device_hotplug_ops bridge_ops
= {
1015 .prepare
= bridge_hotplug_prepare
,
1016 .add
= bridge_hotplug_add
,
1017 .del
= bridge_hotplug_del
1021 bridge_free(struct device
*dev
)
1023 struct bridge_state
*bst
;
1025 bst
= container_of(dev
, struct bridge_state
, dev
);
1026 vlist_flush_all(&bst
->members
);
1027 vlist_flush_all(&dev
->vlans
);
1028 kvlist_free(&dev
->vlan_aliases
);
1029 free(bst
->config_data
);
1034 bridge_dump_port(struct blob_buf
*b
, struct bridge_vlan_port
*port
)
1036 bool tagged
= !(port
->flags
& BRVLAN_F_UNTAGGED
);
1037 bool pvid
= (port
->flags
& BRVLAN_F_PVID
);
1039 blobmsg_printf(b
, NULL
, "%s%s%s%s", port
->ifname
,
1040 tagged
|| pvid
? ":" : "",
1046 bridge_dump_vlan(struct blob_buf
*b
, struct bridge_vlan
*vlan
)
1048 struct bridge_vlan_hotplug_port
*port
;
1052 c
= blobmsg_open_table(b
, NULL
);
1054 blobmsg_add_u32(b
, "id", vlan
->vid
);
1055 blobmsg_add_u8(b
, "local", vlan
->local
);
1057 p
= blobmsg_open_array(b
, "ports");
1059 for (i
= 0; i
< vlan
->n_ports
; i
++)
1060 bridge_dump_port(b
, &vlan
->ports
[i
]);
1062 list_for_each_entry(port
, &vlan
->hotplug_ports
, list
)
1063 bridge_dump_port(b
, &port
->port
);
1065 blobmsg_close_array(b
, p
);
1067 blobmsg_close_table(b
, c
);
1071 bridge_dump_info(struct device
*dev
, struct blob_buf
*b
)
1073 struct bridge_config
*cfg
;
1074 struct bridge_state
*bst
;
1075 struct bridge_member
*bm
;
1076 struct bridge_vlan
*vlan
;
1080 bst
= container_of(dev
, struct bridge_state
, dev
);
1083 system_if_dump_info(dev
, b
);
1084 list
= blobmsg_open_array(b
, "bridge-members");
1086 vlist_for_each_element(&bst
->members
, bm
, node
) {
1087 if (bm
->dev
.dev
->hidden
)
1090 blobmsg_add_string(b
, NULL
, bm
->dev
.dev
->ifname
);
1093 blobmsg_close_array(b
, list
);
1095 c
= blobmsg_open_table(b
, "bridge-attributes");
1097 blobmsg_add_u8(b
, "stp", cfg
->stp
);
1098 blobmsg_add_u32(b
, "forward_delay", cfg
->forward_delay
);
1099 blobmsg_add_u32(b
, "priority", cfg
->priority
);
1100 blobmsg_add_u32(b
, "ageing_time", cfg
->ageing_time
);
1101 blobmsg_add_u32(b
, "hello_time", cfg
->hello_time
);
1102 blobmsg_add_u32(b
, "max_age", cfg
->max_age
);
1103 blobmsg_add_u8(b
, "igmp_snooping", cfg
->igmp_snoop
);
1104 blobmsg_add_u8(b
, "bridge_empty", cfg
->bridge_empty
);
1105 blobmsg_add_u8(b
, "multicast_querier", cfg
->multicast_querier
);
1106 blobmsg_add_u32(b
, "hash_max", cfg
->hash_max
);
1107 blobmsg_add_u32(b
, "robustness", cfg
->robustness
);
1108 blobmsg_add_u32(b
, "query_interval", cfg
->query_interval
);
1109 blobmsg_add_u32(b
, "query_response_interval", cfg
->query_response_interval
);
1110 blobmsg_add_u32(b
, "last_member_interval", cfg
->last_member_interval
);
1111 blobmsg_add_u8(b
, "vlan_filtering", cfg
->vlan_filtering
);
1112 blobmsg_add_u8(b
, "stp_kernel", cfg
->stp_kernel
);
1114 blobmsg_add_string(b
, "stp_proto", cfg
->stp_proto
);
1116 blobmsg_close_table(b
, c
);
1118 if (avl_is_empty(&dev
->vlans
.avl
))
1121 list
= blobmsg_open_array(b
, "bridge-vlans");
1123 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
1124 bridge_dump_vlan(b
, vlan
);
1126 blobmsg_close_array(b
, list
);
1130 bridge_config_init(struct device
*dev
)
1132 struct bridge_state
*bst
;
1133 struct bridge_vlan
*vlan
;
1134 struct blob_attr
*cur
;
1138 bst
= container_of(dev
, struct bridge_state
, dev
);
1140 if (bst
->config
.bridge_empty
) {
1141 bst
->force_active
= true;
1142 device_set_present(&bst
->dev
, true);
1146 vlist_update(&bst
->members
);
1148 blobmsg_for_each_attr(cur
, bst
->ports
, rem
) {
1149 bridge_add_member(bst
, blobmsg_data(cur
));
1153 vlist_for_each_element(&bst
->dev
.vlans
, vlan
, node
)
1154 for (i
= 0; i
< vlan
->n_ports
; i
++)
1155 bridge_add_member(bst
, vlan
->ports
[i
].ifname
);
1157 vlist_flush(&bst
->members
);
1158 bridge_check_retry(bst
);
1162 bridge_apply_settings(struct bridge_state
*bst
, struct blob_attr
**tb
)
1164 struct bridge_config
*cfg
= &bst
->config
;
1165 struct blob_attr
*cur
;
1168 memset(cfg
, 0, sizeof(*cfg
));
1170 cfg
->stp_kernel
= false;
1171 cfg
->robustness
= 2;
1172 cfg
->igmp_snoop
= false;
1173 cfg
->multicast_querier
= false;
1174 cfg
->query_interval
= 12500;
1175 cfg
->query_response_interval
= 1000;
1176 cfg
->last_member_interval
= 100;
1177 cfg
->hash_max
= 512;
1178 cfg
->bridge_empty
= false;
1179 cfg
->priority
= 0x7FFF;
1180 cfg
->vlan_filtering
= false;
1182 cfg
->forward_delay
= 8;
1184 cfg
->hello_time
= 1;
1186 if ((cur
= tb
[BRIDGE_ATTR_STP
]))
1187 cfg
->stp
= blobmsg_get_bool(cur
);
1189 if ((cur
= tb
[BRIDGE_ATTR_STP_KERNEL
]))
1190 cfg
->stp
= blobmsg_get_bool(cur
);
1192 if ((cur
= tb
[BRIDGE_ATTR_STP_PROTO
]))
1193 cfg
->stp_proto
= blobmsg_get_string(cur
);
1195 if ((cur
= tb
[BRIDGE_ATTR_FORWARD_DELAY
]))
1196 cfg
->forward_delay
= blobmsg_get_u32(cur
);
1198 if ((cur
= tb
[BRIDGE_ATTR_PRIORITY
]))
1199 cfg
->priority
= blobmsg_get_u32(cur
);
1201 if ((cur
= tb
[BRIDGE_ATTR_IGMP_SNOOP
]))
1202 cfg
->multicast_querier
= cfg
->igmp_snoop
= blobmsg_get_bool(cur
);
1204 if ((cur
= tb
[BRIDGE_ATTR_MULTICAST_QUERIER
]))
1205 cfg
->multicast_querier
= blobmsg_get_bool(cur
);
1207 if ((cur
= tb
[BRIDGE_ATTR_HASH_MAX
]))
1208 cfg
->hash_max
= blobmsg_get_u32(cur
);
1210 if ((cur
= tb
[BRIDGE_ATTR_ROBUSTNESS
])) {
1211 cfg
->robustness
= blobmsg_get_u32(cur
);
1212 cfg
->flags
|= BRIDGE_OPT_ROBUSTNESS
;
1215 if ((cur
= tb
[BRIDGE_ATTR_QUERY_INTERVAL
])) {
1216 cfg
->query_interval
= blobmsg_get_u32(cur
);
1217 cfg
->flags
|= BRIDGE_OPT_QUERY_INTERVAL
;
1220 if ((cur
= tb
[BRIDGE_ATTR_QUERY_RESPONSE_INTERVAL
])) {
1221 cfg
->query_response_interval
= blobmsg_get_u32(cur
);
1222 cfg
->flags
|= BRIDGE_OPT_QUERY_RESPONSE_INTERVAL
;
1225 if ((cur
= tb
[BRIDGE_ATTR_LAST_MEMBER_INTERVAL
])) {
1226 cfg
->last_member_interval
= blobmsg_get_u32(cur
);
1227 cfg
->flags
|= BRIDGE_OPT_LAST_MEMBER_INTERVAL
;
1230 if ((cur
= tb
[BRIDGE_ATTR_AGEING_TIME
])) {
1231 cfg
->ageing_time
= blobmsg_get_u32(cur
);
1232 cfg
->flags
|= BRIDGE_OPT_AGEING_TIME
;
1235 if ((cur
= tb
[BRIDGE_ATTR_HELLO_TIME
]))
1236 cfg
->hello_time
= blobmsg_get_u32(cur
);
1238 if ((cur
= tb
[BRIDGE_ATTR_MAX_AGE
]))
1239 cfg
->max_age
= blobmsg_get_u32(cur
);
1241 if ((cur
= tb
[BRIDGE_ATTR_BRIDGE_EMPTY
]))
1242 cfg
->bridge_empty
= blobmsg_get_bool(cur
);
1244 if ((cur
= tb
[BRIDGE_ATTR_VLAN_FILTERING
]))
1245 cfg
->vlan_filtering
= blobmsg_get_bool(cur
);
1248 static enum dev_change_type
1249 bridge_reload(struct device
*dev
, struct blob_attr
*attr
)
1251 struct blob_attr
*tb_dev
[__DEV_ATTR_MAX
];
1252 struct blob_attr
*tb_br
[__BRIDGE_ATTR_MAX
];
1253 enum dev_change_type ret
= DEV_CONFIG_APPLIED
;
1254 struct bridge_state
*bst
;
1255 unsigned long diff
[2] = {};
1257 BUILD_BUG_ON(sizeof(diff
) < __BRIDGE_ATTR_MAX
/ BITS_PER_LONG
);
1258 BUILD_BUG_ON(sizeof(diff
) < __DEV_ATTR_MAX
/ BITS_PER_LONG
);
1260 bst
= container_of(dev
, struct bridge_state
, dev
);
1261 attr
= blob_memdup(attr
);
1263 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, tb_dev
,
1264 blob_data(attr
), blob_len(attr
));
1265 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, tb_br
,
1266 blob_data(attr
), blob_len(attr
));
1268 if (tb_dev
[DEV_ATTR_MACADDR
])
1269 bst
->primary_port
= NULL
;
1271 bst
->ports
= tb_br
[BRIDGE_ATTR_PORTS
];
1272 device_init_settings(dev
, tb_dev
);
1273 bridge_apply_settings(bst
, tb_br
);
1275 if (bst
->config_data
) {
1276 struct blob_attr
*otb_dev
[__DEV_ATTR_MAX
];
1277 struct blob_attr
*otb_br
[__BRIDGE_ATTR_MAX
];
1279 blobmsg_parse(device_attr_list
.params
, __DEV_ATTR_MAX
, otb_dev
,
1280 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
1282 uci_blob_diff(tb_dev
, otb_dev
, &device_attr_list
, diff
);
1283 if (diff
[0] | diff
[1]) {
1284 ret
= DEV_CONFIG_RESTART
;
1285 D(DEVICE
, "Bridge %s device attributes have changed, diff=[%lx %lx]\n",
1286 dev
->ifname
, diff
[1], diff
[0]);
1289 blobmsg_parse(bridge_attrs
, __BRIDGE_ATTR_MAX
, otb_br
,
1290 blob_data(bst
->config_data
), blob_len(bst
->config_data
));
1292 diff
[0] = diff
[1] = 0;
1293 uci_blob_diff(tb_br
, otb_br
, &bridge_attr_list
, diff
);
1294 if (diff
[0] & ~(1 << BRIDGE_ATTR_PORTS
)) {
1295 ret
= DEV_CONFIG_RESTART
;
1296 D(DEVICE
, "Bridge %s attributes have changed, diff=[%lx %lx]\n",
1297 dev
->ifname
, diff
[1], diff
[0]);
1300 bridge_config_init(dev
);
1303 free(bst
->config_data
);
1304 bst
->config_data
= attr
;
1309 bridge_retry_members(struct uloop_timeout
*timeout
)
1311 struct bridge_state
*bst
= container_of(timeout
, struct bridge_state
, retry
);
1312 struct bridge_member
*bm
;
1315 vlist_for_each_element(&bst
->members
, bm
, node
) {
1319 if (!bm
->dev
.dev
->present
)
1324 bridge_enable_member(bm
);
1328 static int bridge_avl_cmp_u16(const void *k1
, const void *k2
, void *ptr
)
1330 const uint16_t *i1
= k1
, *i2
= k2
;
1336 bridge_vlan_equal(struct bridge_vlan
*v1
, struct bridge_vlan
*v2
)
1340 if (v1
->n_ports
!= v2
->n_ports
)
1343 for (i
= 0; i
< v1
->n_ports
; i
++)
1344 if (v1
->ports
[i
].flags
!= v2
->ports
[i
].flags
||
1345 strcmp(v1
->ports
[i
].ifname
, v2
->ports
[i
].ifname
) != 0)
1352 bridge_vlan_free(struct bridge_vlan
*vlan
)
1354 struct bridge_vlan_hotplug_port
*port
, *tmp
;
1359 list_for_each_entry_safe(port
, tmp
, &vlan
->hotplug_ports
, list
)
1366 bridge_vlan_update(struct vlist_tree
*tree
, struct vlist_node
*node_new
,
1367 struct vlist_node
*node_old
)
1369 struct bridge_state
*bst
= container_of(tree
, struct bridge_state
, dev
.vlans
);
1370 struct bridge_vlan
*vlan_new
= NULL
, *vlan_old
= NULL
;
1372 if (!bst
->has_vlans
|| !bst
->active
)
1376 vlan_old
= container_of(node_old
, struct bridge_vlan
, node
);
1378 vlan_new
= container_of(node_new
, struct bridge_vlan
, node
);
1380 if (node_new
&& node_old
&& bridge_vlan_equal(vlan_old
, vlan_new
)) {
1381 list_splice_init(&vlan_old
->hotplug_ports
, &vlan_new
->hotplug_ports
);
1386 bridge_set_vlan_state(bst
, vlan_old
, false);
1388 if (node_old
&& node_new
)
1389 list_splice_init(&vlan_old
->hotplug_ports
, &vlan_new
->hotplug_ports
);
1392 vlan_new
->pending
= true;
1394 bst
->dev
.config_pending
= true;
1397 bridge_vlan_free(vlan_old
);
1401 bridge_dev_vlan_update(struct device
*dev
)
1403 struct bridge_state
*bst
= container_of(dev
, struct bridge_state
, dev
);
1404 struct bridge_vlan
*vlan
;
1406 vlist_for_each_element(&dev
->vlans
, vlan
, node
) {
1410 vlan
->pending
= false;
1411 bridge_set_vlan_state(bst
, vlan
, true);
1415 static struct device
*
1416 bridge_create(const char *name
, struct device_type
*devtype
,
1417 struct blob_attr
*attr
)
1419 struct bridge_state
*bst
;
1420 struct device
*dev
= NULL
;
1422 bst
= calloc(1, sizeof(*bst
));
1428 if (device_init(dev
, devtype
, name
) < 0) {
1429 device_cleanup(dev
);
1434 dev
->config_pending
= true;
1435 bst
->retry
.cb
= bridge_retry_members
;
1437 bst
->set_state
= dev
->set_state
;
1438 dev
->set_state
= bridge_set_state
;
1440 dev
->hotplug_ops
= &bridge_ops
;
1442 vlist_init(&bst
->members
, avl_strcmp
, bridge_member_update
);
1443 bst
->members
.keep_old
= true;
1445 vlist_init(&dev
->vlans
, bridge_avl_cmp_u16
, bridge_vlan_update
);
1447 bridge_reload(dev
, attr
);
1452 static void __init
bridge_device_type_init(void)
1454 device_type_add(&bridge_device_type
);