[v1 1/4] ethdev: add IPv4/IPv6 ECN header rewrite action

[Ferruh Yigit]

On 4/2/2022 8:11 AM, Sean Zhang wrote:
> From: Jiawei Wang <jiaweiw at nvidia.com>
> 
> This patch introduces the IPv4/IPv6 ECN modify field support, and
> adds the testpmd CLI commands support.
> 
> Usage:
> 	modify_field op set dst_type ipv4_ecn src_type ...
> 
> For example:
> 
> flow create 0 ingress group 1 pattern eth / ipv4 /  end actions
> 	modify_field op set dst_type ipv4_ecn src_type value src_value
> 	0x03 width 2 / queue index 0 / end
> 
> Signed-off-by: Jiawei Wang <jiaweiw at nvidia.com>
> ---
>   app/test-pmd/cmdline_flow.c | 3 ++-
>   lib/ethdev/rte_flow.h       | 2 ++
>   2 files changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
> index fc4a6d9cca..3250add834 100644
> --- a/app/test-pmd/cmdline_flow.c
> +++ b/app/test-pmd/cmdline_flow.c
> @@ -795,7 +795,8 @@ static const char *const modify_field_ids[] = {
>   	"tcp_seq_num", "tcp_ack_num", "tcp_flags",
>   	"udp_port_src", "udp_port_dst",
>   	"vxlan_vni", "geneve_vni", "gtp_teid",
> -	"tag", "mark", "meta", "pointer", "value", NULL
> +	"tag", "mark", "meta", "pointer", "value",
> +	"ipv4_ecn", "ipv6_ecn", NULL
>   };
>   
>   /** Maximum number of subsequent tokens and arguments on the stack. */
> diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
> index d8827dd184..1b56f23cba 100644
> --- a/lib/ethdev/rte_flow.h
> +++ b/lib/ethdev/rte_flow.h
> @@ -3690,6 +3690,8 @@ enum rte_flow_field_id {
>   	RTE_FLOW_FIELD_META,		/**< Metadata value. */
>   	RTE_FLOW_FIELD_POINTER,		/**< Memory pointer. */
>   	RTE_FLOW_FIELD_VALUE,		/**< Immediate value. */
> +	RTE_FLOW_FIELD_IPV4_ECN,	/**< IPv4 ECN. */
> +	RTE_FLOW_FIELD_IPV6_ECN,	/**< IPv6 ECN. */
>   };
>   
>   /**

cc'ed Alexander.

Patch looks good to me, only perhaps release notes can be updated, what 
do you think?

@Ori, @Alex, do you have any objection/comment?