net/i40e: fix error setting for L2TAG

  Base on HW, if a packet be split into multiple segments, the L2TAG
should only be valid on the last Rx descriptor. So fix it by setting
L2TAG into mbuf when processing the last split packet.

Fixes: ca74903b75cf ("net/i40e: extract non-x86 specific code from vector driver")

Signed-off-by: Jeff Guo <jia.guo@intel.com>
---
 drivers/net/i40e/i40e_rxtx_vec_common.h | 1 +
 1 file changed, 1 insertion(+)
  

> -----Original Message-----
> From: Guo, Jia <jia.guo@intel.com>
> Sent: Thursday, May 21, 2020 5:25 AM
> To: Xing, Beilei <beilei.xing@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>;
> jianbo.liu@linaro.org; xiaoping.yan@nokia-sbell.com
> Cc: Ye, Xiaolong <xiaolong.ye@intel.com>; dev@dpdk.org; Guo, Jia
> <jia.guo@intel.com>; olivier.matz@6wind.com
> Subject: [dpdk-dev] net/i40e: fix error setting for L2TAG
> 
> Base on HW, if a packet be split into multiple segments, the L2TAG should
> only be valid on the last Rx descriptor. So fix it by setting L2TAG into mbuf
> when processing the last split packet.
> 
> Fixes: ca74903b75cf ("net/i40e: extract non-x86 specific code from vector
> driver")
> 
> Signed-off-by: Jeff Guo <jia.guo@intel.com>

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

On 05/20, Jeff Guo wrote:
>Base on HW, if a packet be split into multiple segments, the L2TAG
>should only be valid on the last Rx descriptor. So fix it by setting
>L2TAG into mbuf when processing the last split packet.
>
>Fixes: ca74903b75cf ("net/i40e: extract non-x86 specific code from vector driver")
>
>Signed-off-by: Jeff Guo <jia.guo@intel.com>
>---
> drivers/net/i40e/i40e_rxtx_vec_common.h | 1 +
> 1 file changed, 1 insertion(+)
>
>diff --git a/drivers/net/i40e/i40e_rxtx_vec_common.h b/drivers/net/i40e/i40e_rxtx_vec_common.h
>index 0e6ffa007..31f73f605 100644
>--- a/drivers/net/i40e/i40e_rxtx_vec_common.h
>+++ b/drivers/net/i40e/i40e_rxtx_vec_common.h
>@@ -33,6 +33,7 @@ reassemble_packets(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_bufs,
> 			if (!split_flags[buf_idx]) {
> 				/* it's the last packet of the set */
> 				start->hash = end->hash;
>+				start->vlan_tci = end->vlan_tci;
> 				start->ol_flags = end->ol_flags;
> 				/* we need to strip crc for the whole packet */
> 				start->pkt_len -= rxq->crc_len;
>-- 
>2.20.1
>

Applied to dpdk-next-net-intel, Thanks.
  

Hi,

In which dpdk release, this fix will be available?
Thank you.

Best regards
Yan Xiaoping

-----Original Message-----
From: Ye Xiaolong <xiaolong.ye@intel.com> 
Sent: 2020年5月21日 8:23
To: Jeff Guo <jia.guo@intel.com>
Cc: beilei.xing@intel.com; qi.z.zhang@intel.com; jianbo.liu@linaro.org; Yan, Xiaoping (NSB - CN/Hangzhou) <xiaoping.yan@nokia-sbell.com>; dev@dpdk.org; olivier.matz@6wind.com
Subject: Re: [dpdk-dev] net/i40e: fix error setting for L2TAG

On 05/20, Jeff Guo wrote:
>Base on HW, if a packet be split into multiple segments, the L2TAG 
>should only be valid on the last Rx descriptor. So fix it by setting 
>L2TAG into mbuf when processing the last split packet.
>
>Fixes: ca74903b75cf ("net/i40e: extract non-x86 specific code from 
>vector driver")
>
>Signed-off-by: Jeff Guo <jia.guo@intel.com>
>---
> drivers/net/i40e/i40e_rxtx_vec_common.h | 1 +
> 1 file changed, 1 insertion(+)
>
>diff --git a/drivers/net/i40e/i40e_rxtx_vec_common.h 
>b/drivers/net/i40e/i40e_rxtx_vec_common.h
>index 0e6ffa007..31f73f605 100644
>--- a/drivers/net/i40e/i40e_rxtx_vec_common.h
>+++ b/drivers/net/i40e/i40e_rxtx_vec_common.h
>@@ -33,6 +33,7 @@ reassemble_packets(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_bufs,
> 			if (!split_flags[buf_idx]) {
> 				/* it's the last packet of the set */
> 				start->hash = end->hash;
>+				start->vlan_tci = end->vlan_tci;
> 				start->ol_flags = end->ol_flags;
> 				/* we need to strip crc for the whole packet */
> 				start->pkt_len -= rxq->crc_len;
>--
>2.20.1
>

Applied to dpdk-next-net-intel, Thanks.