netdev - Re: [PATCH net-next] neigh: speedup neigh_resolve

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Message-Id: <20101011.130128.245392712.davem@davemloft.net>
Date:	Mon, 11 Oct 2010 13:01:28 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] neigh: speedup neigh_resolve_output()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 11 Oct 2010 21:46:01 +0200

> Hmm, we would need a neigh->ha pointer to some struct, with rcu
> protection. It adds a dereference in hot path. I believe this seqlock
> (only for pathological cases, where dst are used for few packets) should
> be fine.

Good point.

Ok, assuming it passes build testing I'll push this seqlock
patch to net-next-2.6

Thanks!

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