[dpdk-dev] [PATCH v4 03/15] net/mlx5: query hca hairpin capabilities

[Ori Kam <orika@mellanox.com>]

This commit query and store the hairpin capabilities from the device.

Those capabilities will be used when creating the hairpin queue.

Signed-off-by: Ori Kam <orika@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>

---
 drivers/net/mlx5/mlx5.h           | 4 ++++
 drivers/net/mlx5/mlx5_devx_cmds.c | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index baf945c..4d14e9e 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -184,6 +184,10 @@ struct mlx5_hca_attr {
 	uint32_t tunnel_lro_vxlan:1;
 	uint32_t lro_max_msg_sz_mode:2;
 	uint32_t lro_timer_supported_periods[MLX5_LRO_NUM_SUPP_PERIODS];
+	uint32_t hairpin:1;
+	uint32_t log_max_hairpin_queues:5;
+	uint32_t log_max_hairpin_wq_data_sz:5;
+	uint32_t log_max_hairpin_num_packets:5;
 };
 
 /* Flow list . */
diff --git a/drivers/net/mlx5/mlx5_devx_cmds.c b/drivers/net/mlx5/mlx5_devx_cmds.c
index acfe1de..b072c37 100644
--- a/drivers/net/mlx5/mlx5_devx_cmds.c
+++ b/drivers/net/mlx5/mlx5_devx_cmds.c
@@ -327,6 +327,13 @@ struct mlx5_devx_obj *
 	attr->flow_counters_dump = MLX5_GET(cmd_hca_cap, hcattr,
 					    flow_counters_dump);
 	attr->eswitch_manager = MLX5_GET(cmd_hca_cap, hcattr, eswitch_manager);
+	attr->hairpin = MLX5_GET(cmd_hca_cap, hcattr, hairpin);
+	attr->log_max_hairpin_queues = MLX5_GET(cmd_hca_cap, hcattr,
+						log_max_hairpin_queues);
+	attr->log_max_hairpin_wq_data_sz = MLX5_GET(cmd_hca_cap, hcattr,
+						    log_max_hairpin_wq_data_sz);
+	attr->log_max_hairpin_num_packets = MLX5_GET
+		(cmd_hca_cap, hcattr, log_min_hairpin_wq_data_sz);
 	attr->eth_net_offloads = MLX5_GET(cmd_hca_cap, hcattr,
 					  eth_net_offloads);
 	attr->eth_virt = MLX5_GET(cmd_hca_cap, hcattr, eth_virt);
-- 
1.8.3.1