tree 1c475a8f59b7fce528eb97c6709b25145c110c33
parent 33de014c63646f69f36f3673e3b4676f931dc878
author Pavel Emelyanov <xemul@openvz.org> 1213661651 -0700
committer David S. Miller <davem@davemloft.net> 1213661651 -0700

netns: introduce the net_hash_mix "salt" for hashes

There are many possible ways to add this "salt", thus I made this
patch to be the last in the series to change it if required.

Currently I propose to use the struct net pointer itself as this 
salt, but since this pointer is most often cache-line aligned, shift 
this right to eliminate the bits, that are most often zeroed.

After this, simply add this mix to prepared hashfn-s.

For CONFIG_NET_NS=n case this salt is 0 and no changes in hashfn
appear.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>