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From: Olivier Matz <olivier.matz@6wind.com>
To: Gregory Etelson <getelson@nvidia.com>
Cc: dev@dpdk.org, Ajit Khaparde <ajit.khaparde@broadcom.com>,
	Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
	Ferruh Yigit <ferruh.yigit@intel.com>,
	Thomas Monjalon <thomas@monjalon.net>,
	stable@dpdk.org, Xiaoyun Li <xiaoyun.li@intel.com>,
	Tomasz Kulasek <tomaszx.kulasek@intel.com>,
	Konstantin Ananyev <konstantin.ananyev@intel.com>
Subject: Re: [dpdk-dev] [PATCH v4] app/testpmd: fix TX checksum calculation for tunnel
Date: Fri, 30 Jul 2021 10:39:20 +0200	[thread overview]
Message-ID: <YQO6uEBMnTNTT71K@platinum> (raw)
In-Reply-To: <20210729170141.26563-1-getelson@nvidia.com>

On Thu, Jul 29, 2021 at 08:01:41PM +0300, Gregory Etelson wrote:
> csumonly engine calculates TX checksum of a tunnelled packet for outer
> headers only or separately for outer and inner headers. The
> calculation method is determined by checksum configuration options.
> If TX checksum calculation is separated, the inner headers are
> processed before outer headers.
> 
> Inner headers processing sets checksum values to 0 unconditionally.
> If TX configuration offloads inner checksums only, outer checksum
> calculation in software will read 0 instead of real values and
> produce wrong result.
> 
> The patch zeroes inner checksums only before software calculation.
> 
> Fixes: 6b520d54ebfe ("app/testpmd: use Tx preparation in checksum engine")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Gregory Etelson <getelson@nvidia.com>

Acked-by: Olivier Matz <olivier.matz@6wind.com>

  reply	other threads:[~2021-07-30  8:39 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-19  8:33 [dpdk-dev] [PATCH] " Gregory Etelson
2021-07-21  6:42 ` Ori Kam
2021-07-24 11:37 ` Thomas Monjalon
2021-07-24 12:43   ` Gregory Etelson
2021-07-27 13:07 ` [dpdk-dev] [PATCH v2] " Gregory Etelson
2021-07-28  1:31   ` Li, Xiaoyun
2021-07-28  3:45     ` Gregory Etelson
2021-07-28  4:09   ` Ajit Khaparde
2021-07-28  5:07   ` Li, Xiaoyun
2021-07-28 14:12   ` Olivier Matz
2021-07-28 16:07     ` Gregory Etelson
2021-07-29  8:25       ` Olivier Matz
2021-07-29 10:31         ` Gregory Etelson
2021-07-29 16:02           ` Olivier Matz
2021-07-29  9:39 ` [dpdk-dev] [PATCH v3] " Gregory Etelson
2021-07-29 16:05   ` Olivier Matz
2021-07-29 17:05     ` Gregory Etelson
2021-07-29 17:01 ` [dpdk-dev] [PATCH v4] " Gregory Etelson
2021-07-30  8:39   ` Olivier Matz [this message]
2021-07-30 12:04     ` Thomas Monjalon
2021-08-02 11:21       ` Jiang, YuX

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