tree 16e2ad819112b59a759daff79651955e9bfab1dd
parent 3ca4095f246c21c285d9e4be2ea4d3ee7fbacebd
author Patrick McHardy <kaber@trash.net> 1216429519 -0700
committer David S. Miller <davem@davemloft.net> 1216429519 -0700

packet: add PACKET_RESERVE sockopt

Add new sockopt to reserve some headroom in the mmaped ring frames in
front of the packet payload. This can be used f.i. when the VLAN header
needs to be (re)constructed to avoid moving the entire payload.

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