[dpdk-dev] [PATCH v2] i40e: fix the write back issue in FVL VF

Zhang, Helin helin.zhang at intel.com
Fri Oct 30 07:24:49 CET 2015



> -----Original Message-----
> From: Wu, Jingjing
> Sent: Wednesday, October 21, 2015 10:18 AM
> To: dev at dpdk.org
> Cc: Wu, Jingjing; Zhang, Helin; Pei, Yulong
> Subject: [PATCH v2] i40e: fix the write back issue in FVL VF
> 
> If DPDK is used on VF while the host is using Linux Kernel driver as PF driver on
> FVL NIC, then VF Rx is reported only in batches of
> 4 packets. It is due to the kernel driver assumes VF driver is working in interrupt
> mode, but DPDK VF is working in Polling mode.
> This patch fixes this issue by using the V1.1 virtual channel with Linux i40e PF
> driver.
> 
> Signed-off-by: Jingjing Wu <jingjing.wu at intel.com>
Acked-by: Helin Zhang <helin.zhang at intel.com>


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