[dpdk-dev] [PATCH 1/3] common/mlx5: query for hardware capability to offload IPv4 IHL field

[Gregory Etelson <getelson@nvidia.com>]

The patch queries MLX5 port hardware if it is capable to offload
IPv4 IHL field.

Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
 drivers/common/mlx5/mlx5_devx_cmds.c | 6 ++++++
 drivers/common/mlx5/mlx5_devx_cmds.h | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c
index f5914bce32..9070691332 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.c
+++ b/drivers/common/mlx5/mlx5_devx_cmds.c
@@ -948,6 +948,12 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
 		(flow_table_nic_cap, hcattr,
 		 flow_table_properties_nic_receive.log_max_ft_sampler_num);
 	attr->pkt_integrity_match = mlx5_devx_query_pkt_integrity_match(hcattr);
+	attr->inner_ipv4_ihl = MLX5_GET
+		(flow_table_nic_cap, hcattr,
+		 ft_field_support_2_nic_receive.inner_ipv4_ihl);
+	attr->outer_ipv4_ihl = MLX5_GET
+		(flow_table_nic_cap, hcattr,
+		 ft_field_support_2_nic_receive.outer_ipv4_ihl);
 	/* Query HCA offloads for Ethernet protocol. */
 	memset(in, 0, sizeof(in));
 	memset(out, 0, sizeof(out));
diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h b/drivers/common/mlx5/mlx5_devx_cmds.h
index f8a17b886b..034c40b49c 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.h
+++ b/drivers/common/mlx5/mlx5_devx_cmds.h
@@ -148,6 +148,8 @@ struct mlx5_hca_attr {
 	uint32_t crypto_login:1; /* General obj type CRYPTO_LOGIN supported. */
 	uint32_t regexp_num_of_engines;
 	uint32_t log_max_ft_sampler_num:8;
+	uint32_t inner_ipv4_ihl:1;
+	uint32_t outer_ipv4_ihl:1;
 	uint32_t geneve_tlv_opt;
 	uint32_t cqe_compression:1;
 	uint32_t mini_cqe_resp_flow_tag:1;
-- 
2.31.1