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IB/mlx5: Add support for GRE flow specification

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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: Mark Bloch <markb@mellanox.com>
Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Ariel Levkovich 2018-05-13 14:33:33 +03:00 committed by Jason Gunthorpe
parent b04f0f036a
commit da2f22ae77
1 changed files with 24 additions and 0 deletions
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24
drivers/infiniband/hw/mlx5/main.c
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@ -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))