[dpdk-dev] [PATCH] net/mlx5: match on TCP flags via DV/DR engine

[Ori Kam]

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Jack Min
> Sent: Thursday, May 9, 2019 9:11 AM
> To: Shahaf Shuler <shahafs at mellanox.com>; Yongseok Koh
> <yskoh at mellanox.com>
> Cc: dev at dpdk.org
> Subject: [dpdk-dev] [PATCH] net/mlx5: match on TCP flags via DV/DR engine
> 
> Add support to match all TCP control bits (flags)
> except "NS (ECN-nonce)" via Direct Verbs (DV) or Direct Rule (DR)
> engine.
> 
> Signed-off-by: Xiaoyu Min <jackmin at mellanox.com>
> ---
>  drivers/net/mlx5/mlx5_flow_dv.c | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/mlx5/mlx5_flow_dv.c
> b/drivers/net/mlx5/mlx5_flow_dv.c
> index cf255ca95c..44b4f40404 100644
> --- a/drivers/net/mlx5/mlx5_flow_dv.c
> +++ b/drivers/net/mlx5/mlx5_flow_dv.c
> @@ -2066,6 +2066,12 @@ flow_dv_validate(struct rte_eth_dev *dev, const
> struct rte_flow_attr *attr,
>  	uint64_t last_item = 0;
>  	uint8_t next_protocol = 0xff;
>  	int actions_n = 0;
> +	struct rte_flow_item_tcp nic_tcp_mask = {
> +		.hdr = { .tcp_flags = 0xFF,
> +			 .src_port = RTE_BE16(UINT16_MAX),
> +			 .dst_port = RTE_BE16(UINT16_MAX),
> +		}
> +	};
> 
>  	if (items == NULL)
>  		return -1;
> @@ -2146,7 +2152,7 @@ flow_dv_validate(struct rte_eth_dev *dev, const
> struct rte_flow_attr *attr,
>  			ret = mlx5_flow_validate_item_tcp
>  						(items, item_flags,
>  						 next_protocol,
> -						 &rte_flow_item_tcp_mask,
> +						 &nic_tcp_mask,
>  						 error);
>  			if (ret < 0)
>  				return ret;
> @@ -2862,6 +2868,10 @@ flow_dv_translate_item_tcp(void *matcher, void
> *key,
>  		 rte_be_to_cpu_16(tcp_m->hdr.dst_port));
>  	MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
>  		 rte_be_to_cpu_16(tcp_v->hdr.dst_port & tcp_m-
> >hdr.dst_port));
> +	MLX5_SET(fte_match_set_lyr_2_4, headers_m, tcp_flags,
> +		 tcp_m->hdr.tcp_flags);
> +	MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
> +		 (tcp_v->hdr.tcp_flags & tcp_m->hdr.tcp_flags));
>  }
> 
>  /**
> --
> 2.20.1

Acked-by: Ori Kam <orika at mellanox.com>
Thanks,