2 * Bridge netlink control interface
5 * Stephen Hemminger <shemminger@osdl.org>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
13 #include <linux/kernel.h>
14 #include <linux/slab.h>
15 #include <linux/etherdevice.h>
16 #include <net/rtnetlink.h>
17 #include <net/net_namespace.h>
19 #include <uapi/linux/if_bridge.h>
21 #include "br_private.h"
22 #include "br_private_stp.h"
24 static int br_get_num_vlan_infos(const struct net_port_vlans
*pv
,
27 u16 vid_range_start
= 0, vid_range_end
= 0;
28 u16 vid_range_flags
= 0;
32 if (filter_mask
& RTEXT_FILTER_BRVLAN
)
35 if (!(filter_mask
& RTEXT_FILTER_BRVLAN_COMPRESSED
))
38 /* Count number of vlan info's
40 pvid
= br_get_pvid(pv
);
41 for_each_set_bit(vid
, pv
->vlan_bitmap
, VLAN_N_VID
) {
44 flags
|= BRIDGE_VLAN_INFO_PVID
;
46 if (test_bit(vid
, pv
->untagged_bitmap
))
47 flags
|= BRIDGE_VLAN_INFO_UNTAGGED
;
49 if (vid_range_start
== 0) {
51 } else if ((vid
- vid_range_end
) == 1 &&
52 flags
== vid_range_flags
) {
56 if ((vid_range_end
- vid_range_start
) > 0)
62 vid_range_start
= vid
;
64 vid_range_flags
= flags
;
67 if (vid_range_start
!= 0) {
68 if ((vid_range_end
- vid_range_start
) > 0)
77 static size_t br_get_link_af_size_filtered(const struct net_device
*dev
,
80 struct net_port_vlans
*pv
;
84 if (br_port_exists(dev
))
85 pv
= nbp_get_vlan_info(br_port_get_rcu(dev
));
86 else if (dev
->priv_flags
& IFF_EBRIDGE
)
87 pv
= br_get_vlan_info((struct net_bridge
*)netdev_priv(dev
));
91 num_vlan_infos
= br_get_num_vlan_infos(pv
, filter_mask
);
99 /* Each VLAN is returned in bridge_vlan_info along with flags */
100 return num_vlan_infos
* nla_total_size(sizeof(struct bridge_vlan_info
));
103 static inline size_t br_port_info_size(void)
105 return nla_total_size(1) /* IFLA_BRPORT_STATE */
106 + nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
107 + nla_total_size(4) /* IFLA_BRPORT_COST */
108 + nla_total_size(1) /* IFLA_BRPORT_MODE */
109 + nla_total_size(1) /* IFLA_BRPORT_GUARD */
110 + nla_total_size(1) /* IFLA_BRPORT_PROTECT */
111 + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
112 + nla_total_size(1) /* IFLA_BRPORT_LEARNING */
113 + nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
114 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP */
115 + nla_total_size(1) /* IFLA_BRPORT_PROXYARP_WIFI */
119 static inline size_t br_nlmsg_size(struct net_device
*dev
, u32 filter_mask
)
121 return NLMSG_ALIGN(sizeof(struct ifinfomsg
))
122 + nla_total_size(IFNAMSIZ
) /* IFLA_IFNAME */
123 + nla_total_size(MAX_ADDR_LEN
) /* IFLA_ADDRESS */
124 + nla_total_size(4) /* IFLA_MASTER */
125 + nla_total_size(4) /* IFLA_MTU */
126 + nla_total_size(4) /* IFLA_LINK */
127 + nla_total_size(1) /* IFLA_OPERSTATE */
128 + nla_total_size(br_port_info_size()) /* IFLA_PROTINFO */
129 + nla_total_size(br_get_link_af_size_filtered(dev
,
130 filter_mask
)); /* IFLA_AF_SPEC */
133 static int br_port_fill_attrs(struct sk_buff
*skb
,
134 const struct net_bridge_port
*p
)
136 u8 mode
= !!(p
->flags
& BR_HAIRPIN_MODE
);
138 if (nla_put_u8(skb
, IFLA_BRPORT_STATE
, p
->state
) ||
139 nla_put_u16(skb
, IFLA_BRPORT_PRIORITY
, p
->priority
) ||
140 nla_put_u32(skb
, IFLA_BRPORT_COST
, p
->path_cost
) ||
141 nla_put_u8(skb
, IFLA_BRPORT_MODE
, mode
) ||
142 nla_put_u8(skb
, IFLA_BRPORT_GUARD
, !!(p
->flags
& BR_BPDU_GUARD
)) ||
143 nla_put_u8(skb
, IFLA_BRPORT_PROTECT
, !!(p
->flags
& BR_ROOT_BLOCK
)) ||
144 nla_put_u8(skb
, IFLA_BRPORT_FAST_LEAVE
, !!(p
->flags
& BR_MULTICAST_FAST_LEAVE
)) ||
145 nla_put_u8(skb
, IFLA_BRPORT_LEARNING
, !!(p
->flags
& BR_LEARNING
)) ||
146 nla_put_u8(skb
, IFLA_BRPORT_UNICAST_FLOOD
, !!(p
->flags
& BR_FLOOD
)) ||
147 nla_put_u8(skb
, IFLA_BRPORT_PROXYARP
, !!(p
->flags
& BR_PROXYARP
)) ||
148 nla_put_u8(skb
, IFLA_BRPORT_PROXYARP_WIFI
,
149 !!(p
->flags
& BR_PROXYARP_WIFI
)))
155 static int br_fill_ifvlaninfo_range(struct sk_buff
*skb
, u16 vid_start
,
156 u16 vid_end
, u16 flags
)
158 struct bridge_vlan_info vinfo
;
160 if ((vid_end
- vid_start
) > 0) {
161 /* add range to skb */
162 vinfo
.vid
= vid_start
;
163 vinfo
.flags
= flags
| BRIDGE_VLAN_INFO_RANGE_BEGIN
;
164 if (nla_put(skb
, IFLA_BRIDGE_VLAN_INFO
,
165 sizeof(vinfo
), &vinfo
))
166 goto nla_put_failure
;
169 vinfo
.flags
= flags
| BRIDGE_VLAN_INFO_RANGE_END
;
170 if (nla_put(skb
, IFLA_BRIDGE_VLAN_INFO
,
171 sizeof(vinfo
), &vinfo
))
172 goto nla_put_failure
;
174 vinfo
.vid
= vid_start
;
176 if (nla_put(skb
, IFLA_BRIDGE_VLAN_INFO
,
177 sizeof(vinfo
), &vinfo
))
178 goto nla_put_failure
;
187 static int br_fill_ifvlaninfo_compressed(struct sk_buff
*skb
,
188 const struct net_port_vlans
*pv
)
190 u16 vid_range_start
= 0, vid_range_end
= 0;
191 u16 vid_range_flags
= 0;
192 u16 pvid
, vid
, flags
;
195 /* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
196 * and mark vlan info with begin and end flags
197 * if vlaninfo represents a range
199 pvid
= br_get_pvid(pv
);
200 for_each_set_bit(vid
, pv
->vlan_bitmap
, VLAN_N_VID
) {
203 flags
|= BRIDGE_VLAN_INFO_PVID
;
205 if (test_bit(vid
, pv
->untagged_bitmap
))
206 flags
|= BRIDGE_VLAN_INFO_UNTAGGED
;
208 if (vid_range_start
== 0) {
210 } else if ((vid
- vid_range_end
) == 1 &&
211 flags
== vid_range_flags
) {
215 err
= br_fill_ifvlaninfo_range(skb
, vid_range_start
,
223 vid_range_start
= vid
;
225 vid_range_flags
= flags
;
228 if (vid_range_start
!= 0) {
229 /* Call it once more to send any left over vlans */
230 err
= br_fill_ifvlaninfo_range(skb
, vid_range_start
,
240 static int br_fill_ifvlaninfo(struct sk_buff
*skb
,
241 const struct net_port_vlans
*pv
)
243 struct bridge_vlan_info vinfo
;
246 pvid
= br_get_pvid(pv
);
247 for_each_set_bit(vid
, pv
->vlan_bitmap
, VLAN_N_VID
) {
251 vinfo
.flags
|= BRIDGE_VLAN_INFO_PVID
;
253 if (test_bit(vid
, pv
->untagged_bitmap
))
254 vinfo
.flags
|= BRIDGE_VLAN_INFO_UNTAGGED
;
256 if (nla_put(skb
, IFLA_BRIDGE_VLAN_INFO
,
257 sizeof(vinfo
), &vinfo
))
258 goto nla_put_failure
;
268 * Create one netlink message for one interface
269 * Contains port and master info as well as carrier and bridge state.
271 static int br_fill_ifinfo(struct sk_buff
*skb
,
272 const struct net_bridge_port
*port
,
273 u32 pid
, u32 seq
, int event
, unsigned int flags
,
274 u32 filter_mask
, const struct net_device
*dev
)
276 const struct net_bridge
*br
;
277 struct ifinfomsg
*hdr
;
278 struct nlmsghdr
*nlh
;
279 u8 operstate
= netif_running(dev
) ? dev
->operstate
: IF_OPER_DOWN
;
284 br
= netdev_priv(dev
);
286 br_debug(br
, "br_fill_info event %d port %s master %s\n",
287 event
, dev
->name
, br
->dev
->name
);
289 nlh
= nlmsg_put(skb
, pid
, seq
, event
, sizeof(*hdr
), flags
);
293 hdr
= nlmsg_data(nlh
);
294 hdr
->ifi_family
= AF_BRIDGE
;
296 hdr
->ifi_type
= dev
->type
;
297 hdr
->ifi_index
= dev
->ifindex
;
298 hdr
->ifi_flags
= dev_get_flags(dev
);
301 if (nla_put_string(skb
, IFLA_IFNAME
, dev
->name
) ||
302 nla_put_u32(skb
, IFLA_MASTER
, br
->dev
->ifindex
) ||
303 nla_put_u32(skb
, IFLA_MTU
, dev
->mtu
) ||
304 nla_put_u8(skb
, IFLA_OPERSTATE
, operstate
) ||
306 nla_put(skb
, IFLA_ADDRESS
, dev
->addr_len
, dev
->dev_addr
)) ||
307 (dev
->ifindex
!= dev_get_iflink(dev
) &&
308 nla_put_u32(skb
, IFLA_LINK
, dev_get_iflink(dev
))))
309 goto nla_put_failure
;
311 if (event
== RTM_NEWLINK
&& port
) {
313 = nla_nest_start(skb
, IFLA_PROTINFO
| NLA_F_NESTED
);
315 if (nest
== NULL
|| br_port_fill_attrs(skb
, port
) < 0)
316 goto nla_put_failure
;
317 nla_nest_end(skb
, nest
);
320 /* Check if the VID information is requested */
321 if ((filter_mask
& RTEXT_FILTER_BRVLAN
) ||
322 (filter_mask
& RTEXT_FILTER_BRVLAN_COMPRESSED
)) {
323 const struct net_port_vlans
*pv
;
328 pv
= nbp_get_vlan_info(port
);
330 pv
= br_get_vlan_info(br
);
332 if (!pv
|| bitmap_empty(pv
->vlan_bitmap
, VLAN_N_VID
))
335 af
= nla_nest_start(skb
, IFLA_AF_SPEC
);
337 goto nla_put_failure
;
339 if (filter_mask
& RTEXT_FILTER_BRVLAN_COMPRESSED
)
340 err
= br_fill_ifvlaninfo_compressed(skb
, pv
);
342 err
= br_fill_ifvlaninfo(skb
, pv
);
344 goto nla_put_failure
;
345 nla_nest_end(skb
, af
);
353 nlmsg_cancel(skb
, nlh
);
358 * Notify listeners of a change in port information
360 void br_ifinfo_notify(int event
, struct net_bridge_port
*port
)
365 u32 filter
= RTEXT_FILTER_BRVLAN_COMPRESSED
;
370 net
= dev_net(port
->dev
);
371 br_debug(port
->br
, "port %u(%s) event %d\n",
372 (unsigned int)port
->port_no
, port
->dev
->name
, event
);
374 skb
= nlmsg_new(br_nlmsg_size(port
->dev
, filter
), GFP_ATOMIC
);
378 err
= br_fill_ifinfo(skb
, port
, 0, 0, event
, 0, filter
, port
->dev
);
380 /* -EMSGSIZE implies BUG in br_nlmsg_size() */
381 WARN_ON(err
== -EMSGSIZE
);
385 rtnl_notify(skb
, net
, 0, RTNLGRP_LINK
, NULL
, GFP_ATOMIC
);
388 rtnl_set_sk_err(net
, RTNLGRP_LINK
, err
);
393 * Dump information about all ports, in response to GETLINK
395 int br_getlink(struct sk_buff
*skb
, u32 pid
, u32 seq
,
396 struct net_device
*dev
, u32 filter_mask
, int nlflags
)
398 struct net_bridge_port
*port
= br_port_get_rtnl(dev
);
400 if (!port
&& !(filter_mask
& RTEXT_FILTER_BRVLAN
) &&
401 !(filter_mask
& RTEXT_FILTER_BRVLAN_COMPRESSED
))
404 return br_fill_ifinfo(skb
, port
, pid
, seq
, RTM_NEWLINK
, nlflags
,
408 static int br_vlan_info(struct net_bridge
*br
, struct net_bridge_port
*p
,
409 int cmd
, struct bridge_vlan_info
*vinfo
)
416 err
= nbp_vlan_add(p
, vinfo
->vid
, vinfo
->flags
);
420 if (vinfo
->flags
& BRIDGE_VLAN_INFO_MASTER
)
421 err
= br_vlan_add(p
->br
, vinfo
->vid
,
424 err
= br_vlan_add(br
, vinfo
->vid
, vinfo
->flags
);
430 nbp_vlan_delete(p
, vinfo
->vid
);
431 if (vinfo
->flags
& BRIDGE_VLAN_INFO_MASTER
)
432 br_vlan_delete(p
->br
, vinfo
->vid
);
434 br_vlan_delete(br
, vinfo
->vid
);
442 static int br_afspec(struct net_bridge
*br
,
443 struct net_bridge_port
*p
,
444 struct nlattr
*af_spec
,
447 struct bridge_vlan_info
*vinfo_start
= NULL
;
448 struct bridge_vlan_info
*vinfo
= NULL
;
453 nla_for_each_nested(attr
, af_spec
, rem
) {
454 if (nla_type(attr
) != IFLA_BRIDGE_VLAN_INFO
)
456 if (nla_len(attr
) != sizeof(struct bridge_vlan_info
))
458 vinfo
= nla_data(attr
);
459 if (!vinfo
->vid
|| vinfo
->vid
>= VLAN_VID_MASK
)
461 if (vinfo
->flags
& BRIDGE_VLAN_INFO_RANGE_BEGIN
) {
469 struct bridge_vlan_info tmp_vinfo
;
472 if (!(vinfo
->flags
& BRIDGE_VLAN_INFO_RANGE_END
))
475 if (vinfo
->vid
<= vinfo_start
->vid
)
478 memcpy(&tmp_vinfo
, vinfo_start
,
479 sizeof(struct bridge_vlan_info
));
481 for (v
= vinfo_start
->vid
; v
<= vinfo
->vid
; v
++) {
483 err
= br_vlan_info(br
, p
, cmd
, &tmp_vinfo
);
489 err
= br_vlan_info(br
, p
, cmd
, vinfo
);
498 static const struct nla_policy br_port_policy
[IFLA_BRPORT_MAX
+ 1] = {
499 [IFLA_BRPORT_STATE
] = { .type
= NLA_U8
},
500 [IFLA_BRPORT_COST
] = { .type
= NLA_U32
},
501 [IFLA_BRPORT_PRIORITY
] = { .type
= NLA_U16
},
502 [IFLA_BRPORT_MODE
] = { .type
= NLA_U8
},
503 [IFLA_BRPORT_GUARD
] = { .type
= NLA_U8
},
504 [IFLA_BRPORT_PROTECT
] = { .type
= NLA_U8
},
505 [IFLA_BRPORT_FAST_LEAVE
]= { .type
= NLA_U8
},
506 [IFLA_BRPORT_LEARNING
] = { .type
= NLA_U8
},
507 [IFLA_BRPORT_UNICAST_FLOOD
] = { .type
= NLA_U8
},
508 [IFLA_BRPORT_PROXYARP
] = { .type
= NLA_U8
},
509 [IFLA_BRPORT_PROXYARP_WIFI
] = { .type
= NLA_U8
},
512 /* Change the state of the port and notify spanning tree */
513 static int br_set_port_state(struct net_bridge_port
*p
, u8 state
)
515 if (state
> BR_STATE_BLOCKING
)
518 /* if kernel STP is running, don't allow changes */
519 if (p
->br
->stp_enabled
== BR_KERNEL_STP
)
522 /* if device is not up, change is not allowed
523 * if link is not present, only allowable state is disabled
525 if (!netif_running(p
->dev
) ||
526 (!netif_oper_up(p
->dev
) && state
!= BR_STATE_DISABLED
))
529 br_set_state(p
, state
);
531 br_port_state_selection(p
->br
);
535 /* Set/clear or port flags based on attribute */
536 static void br_set_port_flag(struct net_bridge_port
*p
, struct nlattr
*tb
[],
537 int attrtype
, unsigned long mask
)
540 u8 flag
= nla_get_u8(tb
[attrtype
]);
548 /* Process bridge protocol info on port */
549 static int br_setport(struct net_bridge_port
*p
, struct nlattr
*tb
[])
552 unsigned long old_flags
= p
->flags
;
554 br_set_port_flag(p
, tb
, IFLA_BRPORT_MODE
, BR_HAIRPIN_MODE
);
555 br_set_port_flag(p
, tb
, IFLA_BRPORT_GUARD
, BR_BPDU_GUARD
);
556 br_set_port_flag(p
, tb
, IFLA_BRPORT_FAST_LEAVE
, BR_MULTICAST_FAST_LEAVE
);
557 br_set_port_flag(p
, tb
, IFLA_BRPORT_PROTECT
, BR_ROOT_BLOCK
);
558 br_set_port_flag(p
, tb
, IFLA_BRPORT_LEARNING
, BR_LEARNING
);
559 br_set_port_flag(p
, tb
, IFLA_BRPORT_UNICAST_FLOOD
, BR_FLOOD
);
560 br_set_port_flag(p
, tb
, IFLA_BRPORT_PROXYARP
, BR_PROXYARP
);
561 br_set_port_flag(p
, tb
, IFLA_BRPORT_PROXYARP_WIFI
, BR_PROXYARP_WIFI
);
563 if (tb
[IFLA_BRPORT_COST
]) {
564 err
= br_stp_set_path_cost(p
, nla_get_u32(tb
[IFLA_BRPORT_COST
]));
569 if (tb
[IFLA_BRPORT_PRIORITY
]) {
570 err
= br_stp_set_port_priority(p
, nla_get_u16(tb
[IFLA_BRPORT_PRIORITY
]));
575 if (tb
[IFLA_BRPORT_STATE
]) {
576 err
= br_set_port_state(p
, nla_get_u8(tb
[IFLA_BRPORT_STATE
]));
581 br_port_flags_change(p
, old_flags
^ p
->flags
);
585 /* Change state and parameters on port. */
586 int br_setlink(struct net_device
*dev
, struct nlmsghdr
*nlh
, u16 flags
)
588 struct nlattr
*protinfo
;
589 struct nlattr
*afspec
;
590 struct net_bridge_port
*p
;
591 struct nlattr
*tb
[IFLA_BRPORT_MAX
+ 1];
594 protinfo
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_PROTINFO
);
595 afspec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
596 if (!protinfo
&& !afspec
)
599 p
= br_port_get_rtnl(dev
);
600 /* We want to accept dev as bridge itself if the AF_SPEC
601 * is set to see if someone is setting vlan info on the bridge
607 if (protinfo
->nla_type
& NLA_F_NESTED
) {
608 err
= nla_parse_nested(tb
, IFLA_BRPORT_MAX
,
609 protinfo
, br_port_policy
);
613 spin_lock_bh(&p
->br
->lock
);
614 err
= br_setport(p
, tb
);
615 spin_unlock_bh(&p
->br
->lock
);
617 /* Binary compatibility with old RSTP */
618 if (nla_len(protinfo
) < sizeof(u8
))
621 spin_lock_bh(&p
->br
->lock
);
622 err
= br_set_port_state(p
, nla_get_u8(protinfo
));
623 spin_unlock_bh(&p
->br
->lock
);
630 err
= br_afspec((struct net_bridge
*)netdev_priv(dev
), p
,
631 afspec
, RTM_SETLINK
);
635 br_ifinfo_notify(RTM_NEWLINK
, p
);
640 /* Delete port information */
641 int br_dellink(struct net_device
*dev
, struct nlmsghdr
*nlh
, u16 flags
)
643 struct nlattr
*afspec
;
644 struct net_bridge_port
*p
;
647 afspec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
651 p
= br_port_get_rtnl(dev
);
652 /* We want to accept dev as bridge itself as well */
653 if (!p
&& !(dev
->priv_flags
& IFF_EBRIDGE
))
656 err
= br_afspec((struct net_bridge
*)netdev_priv(dev
), p
,
657 afspec
, RTM_DELLINK
);
659 /* Send RTM_NEWLINK because userspace
660 * expects RTM_NEWLINK for vlan dels
662 br_ifinfo_notify(RTM_NEWLINK
, p
);
666 static int br_validate(struct nlattr
*tb
[], struct nlattr
*data
[])
668 if (tb
[IFLA_ADDRESS
]) {
669 if (nla_len(tb
[IFLA_ADDRESS
]) != ETH_ALEN
)
671 if (!is_valid_ether_addr(nla_data(tb
[IFLA_ADDRESS
])))
672 return -EADDRNOTAVAIL
;
678 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
679 if (data
[IFLA_BR_VLAN_PROTOCOL
]) {
680 switch (nla_get_be16(data
[IFLA_BR_VLAN_PROTOCOL
])) {
681 case htons(ETH_P_8021Q
):
682 case htons(ETH_P_8021AD
):
685 return -EPROTONOSUPPORT
;
693 static int br_dev_newlink(struct net
*src_net
, struct net_device
*dev
,
694 struct nlattr
*tb
[], struct nlattr
*data
[])
696 struct net_bridge
*br
= netdev_priv(dev
);
698 if (tb
[IFLA_ADDRESS
]) {
699 spin_lock_bh(&br
->lock
);
700 br_stp_change_bridge_id(br
, nla_data(tb
[IFLA_ADDRESS
]));
701 spin_unlock_bh(&br
->lock
);
704 return register_netdevice(dev
);
707 static int br_port_slave_changelink(struct net_device
*brdev
,
708 struct net_device
*dev
,
710 struct nlattr
*data
[])
712 struct net_bridge
*br
= netdev_priv(brdev
);
718 spin_lock_bh(&br
->lock
);
719 ret
= br_setport(br_port_get_rtnl(dev
), data
);
720 spin_unlock_bh(&br
->lock
);
725 static int br_port_fill_slave_info(struct sk_buff
*skb
,
726 const struct net_device
*brdev
,
727 const struct net_device
*dev
)
729 return br_port_fill_attrs(skb
, br_port_get_rtnl(dev
));
732 static size_t br_port_get_slave_size(const struct net_device
*brdev
,
733 const struct net_device
*dev
)
735 return br_port_info_size();
738 static const struct nla_policy br_policy
[IFLA_BR_MAX
+ 1] = {
739 [IFLA_BR_FORWARD_DELAY
] = { .type
= NLA_U32
},
740 [IFLA_BR_HELLO_TIME
] = { .type
= NLA_U32
},
741 [IFLA_BR_MAX_AGE
] = { .type
= NLA_U32
},
742 [IFLA_BR_AGEING_TIME
] = { .type
= NLA_U32
},
743 [IFLA_BR_STP_STATE
] = { .type
= NLA_U32
},
744 [IFLA_BR_PRIORITY
] = { .type
= NLA_U16
},
745 [IFLA_BR_VLAN_FILTERING
] = { .type
= NLA_U8
},
746 [IFLA_BR_VLAN_PROTOCOL
] = { .type
= NLA_U16
},
749 static int br_changelink(struct net_device
*brdev
, struct nlattr
*tb
[],
750 struct nlattr
*data
[])
752 struct net_bridge
*br
= netdev_priv(brdev
);
758 if (data
[IFLA_BR_FORWARD_DELAY
]) {
759 err
= br_set_forward_delay(br
, nla_get_u32(data
[IFLA_BR_FORWARD_DELAY
]));
764 if (data
[IFLA_BR_HELLO_TIME
]) {
765 err
= br_set_hello_time(br
, nla_get_u32(data
[IFLA_BR_HELLO_TIME
]));
770 if (data
[IFLA_BR_MAX_AGE
]) {
771 err
= br_set_max_age(br
, nla_get_u32(data
[IFLA_BR_MAX_AGE
]));
776 if (data
[IFLA_BR_AGEING_TIME
]) {
777 u32 ageing_time
= nla_get_u32(data
[IFLA_BR_AGEING_TIME
]);
779 br
->ageing_time
= clock_t_to_jiffies(ageing_time
);
782 if (data
[IFLA_BR_STP_STATE
]) {
783 u32 stp_enabled
= nla_get_u32(data
[IFLA_BR_STP_STATE
]);
785 br_stp_set_enabled(br
, stp_enabled
);
788 if (data
[IFLA_BR_PRIORITY
]) {
789 u32 priority
= nla_get_u16(data
[IFLA_BR_PRIORITY
]);
791 br_stp_set_bridge_priority(br
, priority
);
794 if (data
[IFLA_BR_VLAN_FILTERING
]) {
795 u8 vlan_filter
= nla_get_u8(data
[IFLA_BR_VLAN_FILTERING
]);
797 err
= __br_vlan_filter_toggle(br
, vlan_filter
);
802 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
803 if (data
[IFLA_BR_VLAN_PROTOCOL
]) {
804 __be16 vlan_proto
= nla_get_be16(data
[IFLA_BR_VLAN_PROTOCOL
]);
806 err
= __br_vlan_set_proto(br
, vlan_proto
);
815 static size_t br_get_size(const struct net_device
*brdev
)
817 return nla_total_size(sizeof(u32
)) + /* IFLA_BR_FORWARD_DELAY */
818 nla_total_size(sizeof(u32
)) + /* IFLA_BR_HELLO_TIME */
819 nla_total_size(sizeof(u32
)) + /* IFLA_BR_MAX_AGE */
820 nla_total_size(sizeof(u32
)) + /* IFLA_BR_AGEING_TIME */
821 nla_total_size(sizeof(u32
)) + /* IFLA_BR_STP_STATE */
822 nla_total_size(sizeof(u16
)) + /* IFLA_BR_PRIORITY */
823 nla_total_size(sizeof(u8
)) + /* IFLA_BR_VLAN_FILTERING */
824 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
825 nla_total_size(sizeof(__be16
)) + /* IFLA_BR_VLAN_PROTOCOL */
830 static int br_fill_info(struct sk_buff
*skb
, const struct net_device
*brdev
)
832 struct net_bridge
*br
= netdev_priv(brdev
);
833 u32 forward_delay
= jiffies_to_clock_t(br
->forward_delay
);
834 u32 hello_time
= jiffies_to_clock_t(br
->hello_time
);
835 u32 age_time
= jiffies_to_clock_t(br
->max_age
);
836 u32 ageing_time
= jiffies_to_clock_t(br
->ageing_time
);
837 u32 stp_enabled
= br
->stp_enabled
;
838 u16 priority
= (br
->bridge_id
.prio
[0] << 8) | br
->bridge_id
.prio
[1];
839 u8 vlan_enabled
= br_vlan_enabled(br
);
841 if (nla_put_u32(skb
, IFLA_BR_FORWARD_DELAY
, forward_delay
) ||
842 nla_put_u32(skb
, IFLA_BR_HELLO_TIME
, hello_time
) ||
843 nla_put_u32(skb
, IFLA_BR_MAX_AGE
, age_time
) ||
844 nla_put_u32(skb
, IFLA_BR_AGEING_TIME
, ageing_time
) ||
845 nla_put_u32(skb
, IFLA_BR_STP_STATE
, stp_enabled
) ||
846 nla_put_u16(skb
, IFLA_BR_PRIORITY
, priority
) ||
847 nla_put_u8(skb
, IFLA_BR_VLAN_FILTERING
, vlan_enabled
))
850 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
851 if (nla_put_be16(skb
, IFLA_BR_VLAN_PROTOCOL
, br
->vlan_proto
))
858 static size_t br_get_link_af_size(const struct net_device
*dev
)
860 struct net_port_vlans
*pv
;
862 if (br_port_exists(dev
))
863 pv
= nbp_get_vlan_info(br_port_get_rtnl(dev
));
864 else if (dev
->priv_flags
& IFF_EBRIDGE
)
865 pv
= br_get_vlan_info((struct net_bridge
*)netdev_priv(dev
));
872 /* Each VLAN is returned in bridge_vlan_info along with flags */
873 return pv
->num_vlans
* nla_total_size(sizeof(struct bridge_vlan_info
));
876 static struct rtnl_af_ops br_af_ops __read_mostly
= {
878 .get_link_af_size
= br_get_link_af_size
,
881 struct rtnl_link_ops br_link_ops __read_mostly
= {
883 .priv_size
= sizeof(struct net_bridge
),
884 .setup
= br_dev_setup
,
885 .maxtype
= IFLA_BR_MAX
,
887 .validate
= br_validate
,
888 .newlink
= br_dev_newlink
,
889 .changelink
= br_changelink
,
890 .dellink
= br_dev_delete
,
891 .get_size
= br_get_size
,
892 .fill_info
= br_fill_info
,
894 .slave_maxtype
= IFLA_BRPORT_MAX
,
895 .slave_policy
= br_port_policy
,
896 .slave_changelink
= br_port_slave_changelink
,
897 .get_slave_size
= br_port_get_slave_size
,
898 .fill_slave_info
= br_port_fill_slave_info
,
901 int __init
br_netlink_init(void)
906 rtnl_af_register(&br_af_ops
);
908 err
= rtnl_link_register(&br_link_ops
);
915 rtnl_af_unregister(&br_af_ops
);
920 void br_netlink_fini(void)
923 rtnl_af_unregister(&br_af_ops
);
924 rtnl_link_unregister(&br_link_ops
);