netdev - Re: regression due to "flush SAD/SPD generate false events"

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Date:	Wed, 17 Feb 2010 18:32:09 -0500
From:	jamal <hadi@...erus.ca>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: regression due to "flush SAD/SPD generate false events"

On Wed, 2010-02-17 at 18:07 -0500, jamal wrote:
> When you flush
> an empty table, the time goes up from about 1.5s
> to 3 secs with pfkey. You also see the EAGAIN for
> each flush ...
> I am going to dig a little more ..

Here is a fix. The speed is restored (actually looks a little better
now) - the only thing is if you try to flush an empty table we return
-ESRCH; this seems reasonable, no? So a script like following 

---
#!/usr/sbin/setkey -f
flush;
spdflush;
----

will get:
---
bigismall:~# time setkey -f ./setkey-sample
The result of line 2: No such process.
The result of line 3: No such process.

real	0m0.663s
user	0m0.080s
sys	0m0.128s
----

cheers,
jamal

View attachment "incr-flush-pfkey" of type "text/x-patch" (760 bytes)