[PATCH v2 01/23] common/mlx5: fix duplicate read of general capabilities
    Michael Baum 
    michaelba at nvidia.com
       
    Thu Jan 25 14:30:21 CET 2024
    
    
  
General object types support is indicated in bitmap general_obj_types,
which is part of HCA capabilities list.
This bitmap was read multiple times, and each time a different bit was
extracted.
Previous patch optimized the code, reading the bitmap once into a local
variable, and then extracting the required bits.
However, it missed few of them which still read the bitmap for
themselves. In addition, for other readings, it moved them to use local
variable without removing the old reading, and they are read twice.
This patch moves them all to use the local variable and removes all
duplications.
Fixes: 876d4702b141 ("common/mlx5: optimize read of general capabilities")
Cc: dekelp at nvidia.com
Cc: stable at dpdk.org
Signed-off-by: Michael Baum <michaelba at nvidia.com>
Acked-by: Suanming Mou <suanmingm at nvidia.com>
---
 drivers/common/mlx5/mlx5_devx_cmds.c | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)
diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c
index 3a894f894a..faa38a9f95 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.c
+++ b/drivers/common/mlx5/mlx5_devx_cmds.c
@@ -966,18 +966,6 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
 	attr->max_geneve_tlv_option_data_len = MLX5_GET(cmd_hca_cap, hcattr,
 			max_geneve_tlv_option_data_len);
 	attr->qos.sup = MLX5_GET(cmd_hca_cap, hcattr, qos);
-	attr->qos.flow_meter_aso_sup = !!(MLX5_GET64(cmd_hca_cap, hcattr,
-					 general_obj_types) &
-			      MLX5_GENERAL_OBJ_TYPES_CAP_FLOW_METER_ASO);
-	attr->vdpa.valid = !!(MLX5_GET64(cmd_hca_cap, hcattr,
-					 general_obj_types) &
-			      MLX5_GENERAL_OBJ_TYPES_CAP_VIRTQ_NET_Q);
-	attr->vdpa.queue_counters_valid = !!(MLX5_GET64(cmd_hca_cap, hcattr,
-							general_obj_types) &
-				  MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_Q_COUNTERS);
-	attr->parse_graph_flex_node = !!(MLX5_GET64(cmd_hca_cap, hcattr,
-					 general_obj_types) &
-			      MLX5_GENERAL_OBJ_TYPES_CAP_PARSE_GRAPH_FLEX_NODE);
 	attr->wqe_index_ignore = MLX5_GET(cmd_hca_cap, hcattr,
 					  wqe_index_ignore_cap);
 	attr->cross_channel = MLX5_GET(cmd_hca_cap, hcattr, cd);
@@ -1001,6 +989,9 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
 	/* Read the general_obj_types bitmap and extract the relevant bits. */
 	general_obj_types_supported = MLX5_GET64(cmd_hca_cap, hcattr,
 						 general_obj_types);
+	attr->qos.flow_meter_aso_sup =
+			!!(general_obj_types_supported &
+			   MLX5_GENERAL_OBJ_TYPES_CAP_FLOW_METER_ASO);
 	attr->vdpa.valid = !!(general_obj_types_supported &
 			      MLX5_GENERAL_OBJ_TYPES_CAP_VIRTQ_NET_Q);
 	attr->vdpa.queue_counters_valid =
@@ -1074,8 +1065,7 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
 		MLX5_GET(cmd_hca_cap, hcattr, umr_modify_entity_size_disabled);
 	attr->wait_on_time = MLX5_GET(cmd_hca_cap, hcattr, wait_on_time);
 	attr->crypto = MLX5_GET(cmd_hca_cap, hcattr, crypto);
-	attr->ct_offload = !!(MLX5_GET64(cmd_hca_cap, hcattr,
-					 general_obj_types) &
+	attr->ct_offload = !!(general_obj_types_supported &
 			      MLX5_GENERAL_OBJ_TYPES_CAP_CONN_TRACK_OFFLOAD);
 	attr->rq_delay_drop = MLX5_GET(cmd_hca_cap, hcattr, rq_delay_drop);
 	attr->nic_flow_table = MLX5_GET(cmd_hca_cap, hcattr, nic_flow_table);
-- 
2.25.1
    
    
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