[dpdk-dev] [PATCH] net/mlx5: fix ipv6 type icmp6 header rewrite actions

[Raslan Darawsheh]

Hi,

> -----Original Message-----
> From: Shiri Kuzin <shirik at mellanox.com>
> Sent: Tuesday, February 18, 2020 1:53 PM
> To: dev at dpdk.org
> Cc: Matan Azrad <matan at mellanox.com>; Raslan Darawsheh
> <rasland at mellanox.com>; Slava Ovsiienko <viacheslavo at mellanox.com>;
> stable at dpdk.org
> Subject: [PATCH] net/mlx5: fix ipv6 type icmp6 header rewrite actions
> 
> ICMPv6 header contains the checksum field, that includes the IP
> addresses from IP header.
> 
> The ConnectX-5 hardware does not support ICMPv6 checksum calculation
> and in case of IP header modification the checksum will contain
> the wrong value.
> 
> The patch rejects the header modification actions related to IP
> addresses if ICMPv6 protocol is detected in pattern.
> This issue was also partly fixed in commit [1] which rejects
> flows with the pattern "ipv6 proto is 58".
> 
> [1] commit b1632bd0c1e3 ("net/mlx5: fix ICMPv6 header rewrite actions")
> 
> Fixes: 4bb14c83df95 ("net/mlx5: support modify header using Direct Verbs")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Shiri Kuzin <shirik at mellanox.com>
> Acked-by: Viacheslav Ovsiienko <viacheslavo at mellanox.com>
> Acked-by: Matan Azrad <matan at mellanox.com>
> ---
>  drivers/net/mlx5/mlx5_flow_dv.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/mlx5/mlx5_flow_dv.c
> b/drivers/net/mlx5/mlx5_flow_dv.c
> index a9bb0b4..e5862bd 100644
> --- a/drivers/net/mlx5/mlx5_flow_dv.c
> +++ b/drivers/net/mlx5/mlx5_flow_dv.c
> @@ -4621,6 +4621,7 @@ struct field_modify_info modify_tcp[] = {
>  							    error);
>  			if (ret < 0)
>  				return ret;
> +			item_ipv6_proto = IPPROTO_ICMPV6;
>  			last_item = MLX5_FLOW_LAYER_ICMP6;
>  			break;
>  		case RTE_FLOW_ITEM_TYPE_TAG:
> --
> 1.8.3.1


Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh