From: Ajit Khaparde <ajit.khaparde@broadcom.com>
To: Gregory Etelson <getelson@nvidia.com>
Cc: dpdk-dev <dev@dpdk.org>, Olivier Matz <olivier.matz@6wind.com>,
Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
Ferruh Yigit <ferruh.yigit@intel.com>,
Thomas Monjalon <thomas@monjalon.net>,
dpdk stable <stable@dpdk.org>, Xiaoyun Li <xiaoyun.li@intel.com>
Subject: Re: [dpdk-stable] [PATCH v2] app/testpmd: fix TX checksum calculation for tunnel
Date: Tue, 27 Jul 2021 21:09:17 -0700 [thread overview]
Message-ID: <CACZ4nhu72wgYohCFbn+09Hvbq+AOor5D8XKih6V5RKwxNW71_Q@mail.gmail.com> (raw)
In-Reply-To: <20210727130757.30724-1-getelson@nvidia.com>
[-- Attachment #1: Type: text/plain, Size: 975 bytes --]
On Tue, Jul 27, 2021 at 6:08 AM Gregory Etelson <getelson@nvidia.com> wrote:
>
> TX checksum of a tunnelled packet can be calculated for outer headers
> only or for both outer and inner parts. The calculation method is
> determined by application.
> If TX checksum calculation can be offloaded, hardware ignores
> existing checksum value and replaces it with an updated result.
> If TX checksum is calculated by a software, existing value must be
> zeroed first.
> The testpmd checksum forwarding engine always zeroed inner checksums.
> If inner checksum calculation was offloaded, that header was left
> with 0 checksum value.
> Following outer software checksum calculation produced wrong value.
> The patch zeroes inner IPv4 checksum only before software calculation.
>
> Fixes: 51f694dd40f5 ("app/testpmd: rework checksum forward engine")
> Cc: stable@dpdk.org
>
> Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
next prev parent reply other threads:[~2021-07-28 4:09 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-19 8:33 [dpdk-stable] [PATCH] " Gregory Etelson
2021-07-21 6:42 ` [dpdk-stable] [dpdk-dev] " Ori Kam
2021-07-24 11:37 ` Thomas Monjalon
2021-07-24 12:43 ` Gregory Etelson
2021-07-27 13:07 ` [dpdk-stable] [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 [this message]
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-stable] [PATCH v3] " Gregory Etelson
2021-07-29 16:05 ` Olivier Matz
2021-07-29 17:05 ` Gregory Etelson
2021-07-29 17:01 ` [dpdk-stable] [PATCH v4] " Gregory Etelson
2021-07-30 8:39 ` Olivier Matz
2021-07-30 12:04 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2021-08-02 11:21 ` Jiang, YuX
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