netdev - Re: [net-next PATCH] net: Optimize local checksum offload

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20160218.152943.1817919033060980651.davem@davemloft.net>
Date:	Thu, 18 Feb 2016 15:29:43 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	aduyck@...antis.com
Cc:	netdev@...r.kernel.org
Subject: Re: [net-next PATCH] net: Optimize local checksum offload

From: Alexander Duyck <aduyck@...antis.com>
Date: Wed, 17 Feb 2016 11:23:55 -0800

> This patch takes advantage of several assumptions we can make about the
> headers of the frame in order to reduce overall processing overhead for
> computing the outer header checksum.
> 
> First we can assume the entire header is in the region pointed to by
> skb->head as this is what csum_start is based on.
> 
> Second, as a result of our first assumption, we can just call csum_partial
> instead of making a call to skb_checksum which would end up having to
> configure things so that we could walk through the frags list.
> 
> Signed-off-by: Alexander Duyck <aduyck@...antis.com>

Applied, thanks Alex.