From: "Timo Teräs" <timo.teras@iki.fi>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH 1/4] flow: virtualize flow cache entry methods
Date: Sat, 03 Apr 2010 17:26:00 +0300 [thread overview]
Message-ID: <4BB74FF8.2020303@iki.fi> (raw)
In-Reply-To: <20100403141709.GA5165@gondor.apana.org.au>
Herbert Xu wrote:
> On Sat, Apr 03, 2010 at 04:50:08PM +0300, Timo Teräs wrote:
>> The flow cache is randomized every ten minutes. Thus all flow
>> cache entries get recreated regularly.
>
> Having rmmod <netdrv> block for up to ten minutes is hardly
> ideal.
Why would this block? The device down hook calls flow cache
flush. On flush all bundles with non-up devices get pruned
immediately (via stale_bundle check).
> Besides, in future we may want to get rid of the regular reseeding
> just like we did for IPv4 routes.
Right. It certainly sounds good. And needs a separate change
then.
If this is done, we will need to still have some sort of
periodic gc for flow cache, just like ipv4 routes have. The
gc would on each tick scan just some of the flow cache hash
chains.
next prev parent reply other threads:[~2010-04-03 14:26 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-01 12:52 [PATCH 0/4] caching bundles, iteration 3 Timo Teras
2010-04-01 12:52 ` [PATCH 1/4] flow: virtualize flow cache entry methods Timo Teras
2010-04-01 13:05 ` Eric Dumazet
2010-04-01 13:07 ` Timo Teräs
2010-04-03 3:38 ` Herbert Xu
2010-04-03 8:36 ` Herbert Xu
2010-04-03 13:50 ` Timo Teräs
2010-04-03 14:17 ` Herbert Xu
2010-04-03 14:26 ` Timo Teräs [this message]
2010-04-03 15:53 ` Herbert Xu
2010-04-03 20:19 ` Timo Teräs
2010-04-04 2:06 ` Herbert Xu
2010-04-04 5:50 ` Timo Teräs
2010-04-04 5:58 ` Herbert Xu
2010-04-04 6:07 ` Timo Teräs
2010-04-04 6:19 ` Herbert Xu
2010-04-04 6:28 ` Timo Teräs
2010-04-04 8:35 ` Herbert Xu
2010-04-04 10:42 ` Herbert Xu
2010-04-04 10:50 ` Timo Teräs
2010-04-04 11:00 ` Herbert Xu
2010-04-04 11:06 ` Timo Teräs
2010-04-04 11:26 ` Herbert Xu
2010-04-04 11:31 ` Herbert Xu
2010-04-04 12:09 ` Timo Teräs
2010-04-01 12:52 ` [PATCH 2/4] xfrm: cache bundles instead of policies for outgoing flows Timo Teras
2010-04-01 12:52 ` [PATCH 3/4] xfrm: remove policy garbage collection Timo Teras
2010-04-01 12:52 ` [PATCH 4/4] flow: delayed deletion of flow cache entries Timo Teras
2010-04-02 3:00 ` [PATCH 0/4] caching bundles, iteration 3 David Miller
2010-04-02 13:12 ` Herbert Xu
-- strict thread matches above, loose matches on Subject: below --
2010-04-05 7:00 [PATCH 0/4] caching bundles, iteration 4 Timo Teras
2010-04-05 7:00 ` [PATCH 1/4] flow: virtualize flow cache entry methods Timo Teras
2010-04-05 8:33 ` Herbert Xu
2010-04-05 8:36 ` Timo Teräs
2010-04-05 8:44 ` Herbert Xu
2010-04-05 8:49 ` Herbert Xu
2010-04-05 8:53 ` Timo Teräs
2010-04-05 9:12 ` Herbert Xu
2010-04-05 17:01 ` Timo Teras
2010-04-06 12:34 ` Herbert Xu
2010-04-06 13:26 ` Timo Teräs
2010-04-07 9:15 ` David Miller
2010-04-07 10:30 [PATCH 0/4] caching bundles, iteration 5 Timo Teras
2010-04-07 10:30 ` [PATCH 1/4] flow: virtualize flow cache entry methods Timo Teras
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