From: Yuanhan Liu <yuanhan.liu@linux.intel.com>
To: Alejandro Lucero <alejandro.lucero@netronome.com>
Cc: stable@dpdk.org
Subject: Re: [dpdk-stable] [PATCH] net/nfp: fix packet/data length conversion
Date: Wed, 17 May 2017 14:26:29 +0800 [thread overview]
Message-ID: <20170517062629.GJ3102@yliu-dev.sh.intel.com> (raw)
In-Reply-To: <1494942782-36575-1-git-send-email-alejandro.lucero@netronome.com>
On Tue, May 16, 2017 at 02:53:02PM +0100, Alejandro Lucero wrote:
> [ backported from upstream commit 19ac8c75df90ef90ef8100b13ee3fed2da5a5ac7 ]
>
> Chained mbufs hold data_len as the length of that particular mbuf
> and pkt_len as the full packet length including all the chained
> mbufs. It is not clear from the mbuf definition if pkt_len should
> be set for all the mbufs in a chain, but code there for handling
> mbufs suggests just the first mbuf requires to have pkt_len set.
>
> NFP PMD was assuming pkt_len is set in all the chained mbufs and
> unit tests for gather dma were building mbufs with pkt_len always
> set. This patch gets rid of that assumption.
>
> Fixes: b812daadad0d ("nfp: add Rx and Tx")
>
> Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
Applied to dpdk-stable/16.11.
Thanks!
--yliu
prev parent reply other threads:[~2017-05-17 6:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-16 13:53 Alejandro Lucero
2017-05-17 6:26 ` Yuanhan Liu [this message]
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