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net: rtnetlink: fdb dflt dump must set idx used for cb->arg[0] 

In rtnl_fdb_dump() when the fdb_dump ndo op is not populated
we never set the idx value so that cb->arg[0] is always 0.
Resulting in a endless loop of messages.

Introduced with this commit,

commit 090096bf3d
Author: Vlad Yasevich <vyasevic@redhat.com>
Date:   Wed Mar 6 15:39:42 2013 +0000

    net: generic fdb support for drivers without ndo_fdb_<op>

CC: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend 2013-03-29 08:18:37 +00:00 committed by David S. Miller
parent 54a5d38289
commit 91f3e7b174
1 changed files with 2 additions and 2 deletions
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4
net/core/rtnetlink.c
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@ -2262,7 +2262,7 @@ static int nlmsg_populate_fdb(struct sk_buff *skb,
* @dev: netdevice
*
* Default netdevice operation to dump the existing unicast address list.
* Returns zero on success.
* Returns number of addresses from list put in skb.
*/
int ndo_dflt_fdb_dump(struct sk_buff *skb,
struct netlink_callback *cb,
@ -2303,7 +2303,7 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
if (dev->netdev_ops->ndo_fdb_dump)
idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx);
else
ndo_dflt_fdb_dump(skb, cb, dev, idx);
idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);
}
rcu_read_unlock();