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From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: "Dabilpuram, Nithin" <Nithin.Dabilpuram@cavium.com>
CC: "dev@dpdk.org" <dev@dpdk.org>, "Jacob, Jerin"
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Thread-Topic: [PATCH] net/thunderx: fix Tx desc corruption in scatter-gather
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Date: Fri, 9 Nov 2018 08:20:15 +0000
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Subject: Re: [dpdk-stable] [PATCH] net/thunderx: fix Tx desc corruption in
scatter-gather mode
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-----Original Message-----
> Date: Fri, 9 Nov 2018 11:20:55 +0530
> From: "Dabilpuram, Nithin" <Nithin.Dabilpuram@cavium.com>
> To: "dev@dpdk.org" <dev@dpdk.org>, "Jacob, Jerin"
> <Jerin.JacobKollanukkaran@cavium.com>, "Czekaj, Maciej"
> <Maciej.Czekaj@cavium.com>
> CC: "Nilla, Subrahmanyam" <Subrahmanyam.Nilla@cavium.com>,
> "stable@dpdk.org" <stable@dpdk.org>, "Dabilpuram, Nithin"
> <Nithin.Dabilpuram@cavium.com>
> Subject: [PATCH] net/thunderx: fix Tx desc corruption in scatter-gather
> mode
>=20
> From: Subrahmanyam Nilla <snilla@caviumnetworks.com>
>=20
> For performance reasons, word1 of send_hdr_s
> sub descriptor was not cleared assuming it is always
> having default value of zero since it comes from fixed
> offsets of SQ buffer.
> This is causing issues in case of SG mode because,
> the size of send command might change and hence the word1
> of send_hdr_s is not always at fixed offsets of the SQ buffer
> and hence not having default value of zero.
>=20
> This fixes the issue by clearing the word1 in case of SG mode
> for every packet.
>=20
> Fixes: 1c421f18e0 ("net/thunderx: add single and multi-segment Tx")
> Cc: stable@dpdk.org
>=20
> Signed-off-by: Subrahmanyam Nilla <snilla@caviumnetworks.com>
> Signed-off-by: Nithin Dabilpuram <ndabilpuram@caviumnetworks.com>
> ---
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>