[RFC] [XFRM] SAD only lookup

Folks, 
shit happened and my old hard-drive was whipped containing my old
ipsec pktgen patches. I am now trying to recover them.
Luckily, this one patch i sent on email - so it was an easy recovery.

I know James and Herbert had both commented in the past on this patch.
Please look at it again and see if i am missing something we agreed on.
Herbert, I cant see any easier way to do the SAD lookup. If you have
suggestions please shoot. I am shooting for this to go in when 2.6.23
opens up.


cheers,
jamal