From: Jamal Hadi Salim <hadi@cyberus.ca>
Date: Thu, 26 Apr 2007 07:10:29 +0000 (-0700)
Subject: [XFRM]: Export SAD info.
X-Git-Tag: v2.6.22-rc1~1128^2~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28d8909bc790d936ce33f4402adf7577533bbd4b;p=pandora-kernel.git

[XFRM]: Export SAD info.

On a system with a lot of SAs, counting SAD entries chews useful
CPU time since you need to dump the whole SAD to user space;
i.e something like ip xfrm state ls | grep -i src | wc -l
I have seen taking literally minutes on a 40K SAs when the system
is swapping.
With this patch, some of the SAD info (that was already being tracked)
is exposed to user space. i.e you do:
ip xfrm state count
And you get the count; you can also pass -s to the command line and
get the hash info.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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