From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
To: intel-wired-lan@osuosl.org
Subject: [Intel-wired-lan] [net PATCH 0/2] Don't use lco_csum to compute IPv4 checksum
Date: Wed, 30 Nov 2016 13:15:22 -0800 [thread overview]
Message-ID: <1480540522.2377.18.camel@intel.com> (raw)
In-Reply-To: <20161130.094746.724735454244491985.davem@davemloft.net>
On Wed, 2016-11-30 at 09:47 -0500, David Miller wrote:
> From: Alexander Duyck <alexander.h.duyck@intel.com>
> Date: Mon, 28 Nov 2016 10:42:18 -0500
>
> > When I implemented the GSO partial support in the Intel drivers I was
> using
> > lco_csum to compute the checksum that we needed to plug into the IPv4
> > checksum field in order to cancel out the data that was not a part of
> the
> > IPv4 header.? However this didn't take into account that the transport
> > offset might be pointing to the inner transport header.
> >?
> > Instead of using lco_csum I have just coded around it so that we can
> use
> > the outer IP header plus the IP header length to determine where we
> need to
> > start our checksum and then just call csum_partial ourselves.
> >?
> > This should fix the SIT issue reported on igb interfaces as well as
> simliar
> > issues that would pop up on other Intel NICs.
>
> Jeff, are you going to send me a pull request with this stuff or would
> you be OK with my applying these directly to 'net'?
Go ahead and apply those to your net tree, I do not want to hold this up.
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next prev parent reply other threads:[~2016-11-30 21:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-28 15:42 [Intel-wired-lan] [net PATCH 0/2] Don't use lco_csum to compute IPv4 checksum Alexander Duyck
2016-11-28 15:42 ` [Intel-wired-lan] [net PATCH 1/2] igb/igbvf: " Alexander Duyck
2016-11-28 15:42 ` [Intel-wired-lan] [net PATCH 2/2] ixgbe/ixgbevf: " Alexander Duyck
2016-11-28 22:26 ` [Intel-wired-lan] [net PATCH 0/2] " Jeff Kirsher
2016-11-28 23:43 ` Stephen Rothwell
2016-11-29 9:07 ` Stephen Rothwell
2017-01-11 23:19 ` Stephen Rothwell
2016-11-30 14:47 ` David Miller
2016-11-30 21:15 ` Jeff Kirsher [this message]
2016-12-01 20:41 ` David Miller
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