[PATCH v3] app/testpmd: perform SW IP checksum for GRO/GSO packets

[Ling, WeiX]

> -----Original Message-----
> From: Wenwu Ma <wenwux.ma at intel.com>
> Sent: Thursday, May 12, 2022 9:08 AM
> To: Li, Xiaoyun <xiaoyun.li at intel.com>; Singh, Aman Deep
> <aman.deep.singh at intel.com>; Zhang, Yuying <yuying.zhang at intel.com>;
> dev at dpdk.org
> Cc: Hu, Jiayu <jiayu.hu at intel.com>; Wang, Yinan <yinan.wang at intel.com>;
> He, Xingguang <xingguang.he at intel.com>; Ma, WenwuX
> <wenwux.ma at intel.com>; stable at dpdk.org
> Subject: [PATCH v3] app/testpmd: perform SW IP checksum for GRO/GSO
> packets
>
> The GRO/GSO library doesn't re-calculate checksums for
> merged/fragmented packets. If users want the packets to have correct IP
> checksums, they should select HW IP checksum calculation for the port which
> the packets are transmitted to. But if the port doesn't support HW IP
> checksum, users may perform a SW IP checksum. This patch add the code
> about it.
>
> Fixes: b7091f1dcfbc ("app/testpmd: enable the heavyweight mode TCP/IPv4
> GRO")
> Fixes: 52f38a2055ed ("app/testpmd: enable TCP/IPv4 VxLAN and GRE GSO")
> Cc: stable at dpdk.org
>
> Signed-off-by: Wenwu Ma <wenwux.ma at intel.com>
> ---

Tested-by: Wei Ling <weix.ling at intel.com>