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From: Ulrich Weber <uweber@astaro•com>
To: Eric Dumazet <eric.dumazet@gmail•com>
Cc: David Miller <davem@davemloft•net>, netdev@vger•kernel.org
Subject: Re: [RFC PATCH] dont create cached routes from ARP requests
Date: Mon, 27 Sep 2010 15:11:47 +0200	[thread overview]
Message-ID: <4CA09813.6090707@astaro.com> (raw)
In-Reply-To: <1285347509.2503.357.camel@edumazet-laptop>

Hi Eric,

thanks for the correction! Searched through the log files and discovered
that the initial "Neighbor overflow" message was caused by an IPv6 ping
scan from the Internet.

rt_garbage_collect() is called from dst_alloc and rt_intern_hash. In any
case no routes will be freed if the total entries are smaller than
ipv4.route.gc_thresh.

neigh.default.gc_thresh is static while ipv4.route.gc_thresh is based on
system memory. Wouldn't it make sense to set neigh.default.gc_thresh
based on system memory too?

Cheers
 Ulrich

-- 
Ulrich Weber | uweber@astaro•com | Software Engineer
Astaro GmbH & Co. KG | www.astaro.com | Phone +49-721-25516-0 | Fax –200
An der RaumFabrik 33a | 76227 Karlsruhe | Germany

next prev parent reply	other threads:[~2010-09-27 13:27 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-22 16:22 [RFC PATCH] dont create cached routes from ARP requests Ulrich Weber
2010-09-23  3:34 ` David Miller
2010-09-23 14:47   ` Ulrich Weber
2010-09-23 15:05     ` Eric Dumazet
2010-09-24 15:00       ` Ulrich Weber
2010-09-24 15:28         ` Eric Dumazet
2010-09-24 15:34           ` Eric Dumazet
2010-09-24 15:43             ` Ulrich Weber
2010-09-24 15:38           ` Ulrich Weber
2010-09-24 16:05             ` Eric Dumazet
2010-09-24 16:40               ` Ulrich Weber
2010-09-24 16:58                 ` Eric Dumazet
2010-09-27 13:11                   ` Ulrich Weber [this message]
2010-09-23 19:04     ` David Miller

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