From da2f22ae7707b6ed254983aa3b23e013e07cd532 Mon Sep 17 00:00:00 2001 From: Ariel Levkovich Date: Sun, 13 May 2018 14:33:33 +0300 Subject: [PATCH] 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: Mark Bloch Signed-off-by: Ariel Levkovich Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/mlx5/main.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index a42c6b1cdb5a..81f696b21356 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -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))