netlink: bug fix: don't overrun skbs on vf_port dump
authorScott Feldman <scofeldm@cisco.com>
Fri, 28 May 2010 10:42:18 +0000 (03:42 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 28 May 2010 10:42:18 +0000 (03:42 -0700)
commit8ca9418350eccd5dd2659931807c1901224dd638
tree2b476e5a084de1da3cb68dbddcce80c0c917578a
parent50636af715ac1ceb1872bd29a4bdcc68975c3263
netlink: bug fix: don't overrun skbs on vf_port dump

Noticed by Patrick McHardy: was continuing to fill skb after a
nla_put_failure, ignoring the size calculated by upper layer.  Now,
return -EMSGSIZE on any overruns, but also allow netdev to
fail ndo_get_vf_port with error other than -EMSGSIZE, thus unwinding
nest.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/rtnetlink.c