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Commit da2f22ae authored by Ariel Levkovich's avatar Ariel Levkovich Committed by Jason Gunthorpe
Browse files

IB/mlx5: Add support for GRE flow specification 



This patch introduces support for the GRE flow spec and
allowing the creation of rules based on the protocol and
key fields that are part of GRE protocol header.

Reviewed-by: default avatarMark Bloch <markb@mellanox.com>
Signed-off-by: default avatarAriel Levkovich <lariel@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent b04f0f03

drivers/infiniband/hw/mlx5/main.c

+24 −0
Original line number Diff line number Diff line
@@ -2448,6 +2448,7 @@ static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val) 
#define LAST_TUNNEL_FIELD tunnel_id

#define LAST_FLOW_TAG_FIELD tag_id

#define LAST_DROP_FIELD size

#define LAST_DROP_FIELD size



/* Field is the last supported field */

#define FIELDS_NOT_SUPPORTED(filter, field)\
@@ -2689,6 +2690,29 @@ static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c, 
		MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,

			 ntohs(ib_spec->tcp_udp.val.dst_port));

		break;

	case IB_FLOW_SPEC_GRE:

		if (ib_spec->gre.mask.c_ks_res0_ver)

			return -EOPNOTSUPP;



		MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,

			 0xff);

		MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,

			 IPPROTO_GRE);



		MLX5_SET(fte_match_set_misc, misc_params_c, gre_protocol,

			 0xffff);

		MLX5_SET(fte_match_set_misc, misc_params_v, gre_protocol,

			 ntohs(ib_spec->gre.val.protocol));



		memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_c,

				    gre_key_h),

		       &ib_spec->gre.mask.key,

		       sizeof(ib_spec->gre.mask.key));

		memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_v,

				    gre_key_h),

		       &ib_spec->gre.val.key,

		       sizeof(ib_spec->gre.val.key));

		break;

	case IB_FLOW_SPEC_VXLAN_TUNNEL:

		if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask,

					 LAST_TUNNEL_FIELD))