[PATCH] app/testpmd: fix GTP L2 len in checksum engine

[Singh, Aman Deep]

On 4/2/2023 5:56 PM, Raslan Darawsheh wrote:
> GTP header can be followed by an optional 32 bits extension.
>
> But, l2_len value statically set to RTE_ETHER_GTP_HLEN
> which is defined to be
>          (sizeof(struct rte_udp_hdr) + sizeof(struct rte_gtp_hdr))
>
> This fixes the l2_len to take into consideration the extension size.
>
> Fixes: d8e5e69f3a9b ("app/testpmd: add GTP parsing and Tx checksum offload")
> Cc: ting.xu at intel.com
> Cc: stable at dpdk.org
>
> Signed-off-by: Raslan Darawsheh <rasland at nvidia.com>

Acked-by: Aman Singh <aman.deep.singh at intel.com>

> ---
>   app/test-pmd/csumonly.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
> index fc85c22a77..b50b89367a 100644
> --- a/app/test-pmd/csumonly.c
> +++ b/app/test-pmd/csumonly.c
> @@ -250,7 +250,7 @@ parse_gtp(struct rte_udp_hdr *udp_hdr,
>   		info->l4_proto = 0;
>   	}
>   
> -	info->l2_len += RTE_ETHER_GTP_HLEN;
> +	info->l2_len += gtp_len + sizeof(udp_hdr);

Macro is unused after above change.
So can be removed.

>   }
>   
>   /* Parse a vxlan header */