[dpdk-dev] [PATCH v2] net/igc: fix Rx packet size error

[Chen, LingliX]

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Alvin Zhang
> Sent: Tuesday, April 20, 2021 10:05 AM
> To: Wang, Haiyue <haiyue.wang at intel.com>; Guo, Jia <jia.guo at intel.com>
> Cc: dev at dpdk.org; Zhang, AlvinX <alvinx.zhang at intel.com>; stable at dpdk.org
> Subject: [dpdk-dev] [PATCH v2] net/igc: fix Rx packet size error
> 
> When DEV_RX_OFFLOAD_KEEP_CRC is enabled, the PMD will minus 4 bytes of
> CRC from the size of a packet, but the NIC will strip the CRC because the CRC
> strip bit in DVMOLR register is not cleared. This will cause the size of a packet
> to be 4 bytes less.
> 
> This patch updates the CRC strip bit according to whether
> DEV_RX_OFFLOAD_KEEP_CRC is enabled.
> 
> Fixes: a5aeb2b9e225 ("net/igc: support Rx and Tx")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Alvin Zhang <alvinx.zhang at intel.com>

Tested-by: Lingli Chen <linglix.chen at intel.com>