patches for DPDK stable branches
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From: "Zhang, Qi Z" <qi.z.zhang@intel.com>
To: Ruifeng Wang <ruifeng.wang@arm.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "Xing, Beilei" <beilei.xing@intel.com>,
	"Richardson, Bruce" <bruce.richardson@intel.com>,
	"jerinj@marvell.com" <jerinj@marvell.com>,
	"hemant.agrawal@nxp.com" <hemant.agrawal@nxp.com>,
	"drc@linux.vnet.ibm.com" <drc@linux.vnet.ibm.com>,
	"honnappa.nagarahalli@arm.com" <honnappa.nagarahalli@arm.com>,
	"stable@dpdk.org" <stable@dpdk.org>, "nd@arm.com" <nd@arm.com>
Subject: Re: [dpdk-stable] [PATCH v2 0/2] i40e Rx descriptor loads ordering
Date: Fri, 24 Sep 2021 11:08:57 +0000
Message-ID: <a7049c6c293b4997ac3e2c02cb54d5eb@intel.com> (raw)
In-Reply-To: <20210915083339.2424369-1-ruifeng.wang@arm.com>



> -----Original Message-----
> From: Ruifeng Wang <ruifeng.wang@arm.com>
> Sent: Wednesday, September 15, 2021 4:34 PM
> To: dev@dpdk.org
> Cc: Xing, Beilei <beilei.xing@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>;
> Richardson, Bruce <bruce.richardson@intel.com>; jerinj@marvell.com;
> hemant.agrawal@nxp.com; drc@linux.vnet.ibm.com;
> honnappa.nagarahalli@arm.com; stable@dpdk.org; nd@arm.com; Ruifeng
> Wang <ruifeng.wang@arm.com>
> Subject: [PATCH v2 0/2] i40e Rx descriptor loads ordering
> 
> On Rx path, NIC fills Rx descriptor with data pertains to received packet.
> 
> A single descriptor consists of multiple words. Word1 has the bit that indicates
> readiness of descriptor for software to use. So word1 should be loaded before
> other words.
> 
> On architectures with weaker memory ordering, barrier is needed to ensure
> the ordering of loads.
> 
> This patch set fixed the risk on both scalar path and aarch64 vector path.
> 
> v2:
> Updated commit message. Performance impact added. (Honnappa)
> 
> Ruifeng Wang (2):
>   net/i40e: fix risk in Rx descriptor read in NEON vector path
>   net/i40e: fix risk in Rx descriptor read in scalar path
> 
>  drivers/net/i40e/i40e_rxtx.c          | 12 ++++++++++++
>  drivers/net/i40e/i40e_rxtx_vec_neon.c |  8 ++++++++
>  2 files changed, 20 insertions(+)
> 
> --
> 2.25.1

Applied to dpdk-next-net-intel.

Thanks
Qi

      parent reply	other threads:[~2021-09-24 11:09 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-06  3:31 [dpdk-stable] [PATCH " Ruifeng Wang
2021-09-06  3:32 ` [dpdk-stable] [PATCH 1/2] net/i40e: fix risk in Rx descriptor read in NEON vector path Ruifeng Wang
2021-09-14 18:33   ` Honnappa Nagarahalli
2021-09-15  8:42     ` Ruifeng Wang
2021-09-06  3:32 ` [dpdk-stable] [PATCH 2/2] net/i40e: fix risk in Rx descriptor read in scalar path Ruifeng Wang
2021-09-14 18:06   ` Honnappa Nagarahalli
2021-09-15  8:33 ` [dpdk-stable] [PATCH v2 0/2] i40e Rx descriptor loads ordering Ruifeng Wang
2021-09-15  8:33   ` [dpdk-stable] [PATCH v2 1/2] net/i40e: fix risk in Rx descriptor read in NEON vector path Ruifeng Wang
2021-09-15  8:33   ` [dpdk-stable] [PATCH v2 2/2] net/i40e: fix risk in Rx descriptor read in scalar path Ruifeng Wang
2021-09-29 15:05     ` Ferruh Yigit
2021-09-29 15:29       ` Honnappa Nagarahalli
2021-10-11 16:26         ` Ferruh Yigit
2021-10-19 11:14           ` Zhang, Qi Z
2021-11-05  6:57             ` Ruifeng Wang
2021-11-11 10:27               ` Ruifeng Wang
2021-11-11 12:27     ` Zhang, Qi Z
2021-09-24 11:08   ` Zhang, Qi Z [this message]

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