From: "Lu, Wenzhuo" <wenzhuo.lu@intel.com>
To: "Zhang, Roy Fan" <roy.fan.zhang@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: "Glynn, Michael J" <michael.j.glynn@intel.com>,
"Zhang, Roy Fan" <roy.fan.zhang@intel.com>,
"stable@dpdk.org" <stable@dpdk.org>,
"Zhang, Helin" <helin.zhang@intel.com>,
"Liang, Cunming" <cunming.liang@intel.com>,
"Chilikin, Andrey" <andrey.chilikin@intel.com>
Subject: Re: [dpdk-dev] [PATCH v2] drivers/i40e: fix link update no wait
Date: Fri, 9 Mar 2018 08:45:22 +0000 [thread overview]
Message-ID: <6A0DE07E22DDAD4C9103DF62FEBC09093B749EDA@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <20180308121752.70424-1-roy.fan.zhang@intel.com>
Hi,
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Fan Zhang
> Sent: Thursday, March 8, 2018 8:18 PM
> To: dev@dpdk.org
> Cc: Glynn, Michael J <michael.j.glynn@intel.com>; Zhang, Roy Fan
> <roy.fan.zhang@intel.com>; stable@dpdk.org; Zhang, Helin
> <helin.zhang@intel.com>; Liang, Cunming <cunming.liang@intel.com>;
> Chilikin, Andrey <andrey.chilikin@intel.com>
> Subject: [dpdk-dev] [PATCH v2] drivers/i40e: fix link update no wait
>
> Fixes: 263333bbb7a9 ("i40e: fix link status timeout")
> Cc: cunming.liang@intel.com
> Cc: stable@dpdk.org
>
> In i40e_dev_link_update() the driver obtains the link status info via admin
> queue command despite of "no_wait" flag. This requires relatively long time
> and may be a problem to some application such as ovs-dpdk
> (https://bugzilla.redhat.com/show_bug.cgi?id=1551761).
>
> This patch aims to fix the problem by using a different approach of obtaining
> link status for i40e NIC without waiting.
> Instead of getting the link status via admin queue command, this patch
> reads the link status registers to accelerate the procedure.
>
> Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
> Signed-off-by: Andrey Chilikin <andrey.chilikin@intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
next prev parent reply other threads:[~2018-03-09 8:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-08 11:55 [dpdk-dev] [PATCH] " Fan Zhang
2018-03-08 12:17 ` [dpdk-dev] [PATCH v2] " Fan Zhang
2018-03-08 13:01 ` Eelco Chaudron
2018-03-09 8:45 ` Lu, Wenzhuo [this message]
2018-03-09 13:22 ` Zhang, Helin
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