tree abd497f5b7023ff748001d6ef182d74f882f1a07
parent ac6d439d2097b72ea0cbc2322ce1263a38bc1fd0
author Patrick McHardy <kaber@trash.net> 1124073096 -0700
committer David S. Miller <davem@sunset.davemloft.net> 1125356458 -0700

[NETLINK]: Return -EPROTONOSUPPORT in netlink_create() if no kernel socket is registered

This is necessary for dynamic number of netlink groups to make sure we know
the number of possible groups before bind() is called. With this change pure
userspace communication using unused netlink protocols becomes impossible.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>