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From: "Zhang, Qi Z" <qi.z.zhang@intel.com>
To: "Wu, Wenjun1" <wenjun1.wu@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"Xing, Beilei" <beilei.xing@intel.com>
Cc: "Wu, Wenjun1" <wenjun1.wu@intel.com>
Subject: Re: [dpdk-dev] [PATCH v5] net/i40e: extend VF reset waiting time
Date: Thu, 29 Apr 2021 11:04:16 +0000
Message-ID: <ca0f630c567f47e49729e945a0156b1d@intel.com> (raw)
In-Reply-To: <20210429082724.1157163-1-wenjun1.wu@intel.com>



> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Wenjun Wu
> Sent: Thursday, April 29, 2021 4:27 PM
> To: dev@dpdk.org; Xing, Beilei <beilei.xing@intel.com>
> Cc: Wu, Wenjun1 <wenjun1.wu@intel.com>
> Subject: [dpdk-dev] [PATCH v5] net/i40e: extend VF reset waiting time
> 
> When starting VF, VF will issue reset command to PF, wait a fixed amount of
> time, and assume VF reset is done on PF side. However, compared with kernel
> PF, DPDK PF needs more time to setup. If we run DPDK PF to support DPDK VF,
> the original delay will not be enough. When we first start VF after PF is
> launched, the execution time of the statement info.msg_buf =
> rte_zmalloc("msg_buffer", info.buf_len, 0); in the function
> i40e_dev_handle_aq_msg is more than 200ms. It may cause VF start error.
> 
> Since iavf can hardly triggle this issue and i40evf will be replaced by iavf in
> future DPDK versions, this patch provide a workaround.
> We extend VF reset waiting time from 200ms to 500ms so that VF can start
> normally when using DPDK PF and DPDK VF in most cases.
> 
> Signed-off-by: Wenjun Wu <wenjun1.wu@intel.com>

Acked-by: Qi Zhang <qi.z.zhang@intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi


      reply	other threads:[~2021-04-29 11:04 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-22  5:34 [dpdk-dev] [PATCH v1] " Wenjun Wu
2021-04-25  2:02 ` [dpdk-dev] [PATCH v2] " Wenjun Wu
2021-04-25  2:25   ` Zhang, Qi Z
2021-04-25  7:44   ` Zhou, JunX W
2021-04-28  9:30   ` Ferruh Yigit
2021-04-29  2:26     ` Wu, Wenjun1
2021-04-29  3:05   ` [dpdk-dev] [PATCH v3] " Wenjun Wu
2021-04-29  3:10     ` [dpdk-dev] [PATCH v4] " Wenjun Wu
2021-04-29  8:27       ` [dpdk-dev] [PATCH v5] " Wenjun Wu
2021-04-29 11:04         ` Zhang, Qi Z [this message]

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