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IB/mlx5: Add np_min_time_between_cnps and rp_max_rate debug params

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Add two debugfs parameters described below.

np_min_time_between_cnps - Minimum time between sending CNPs from the
                           port.
                           Unit = microseconds.
                           Default = 0 (no min wait time; generated
                           based on incoming ECN marked packets).

rp_max_rate - Maximum rate at which reaction point node can transmit.
              Once this limit is reached, RP is no longer rate limited.
              Unit = Mbits/sec
              Default = 0 (full speed)

Link: https://lore.kernel.org/r/20200227125246.99472-1-leon@kernel.org
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Parav Pandit 2020-02-27 14:52:46 +02:00 committed by Jason Gunthorpe
parent 91b74bf531
commit 9e3aaf6883
2 changed files with 22 additions and 0 deletions
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20
drivers/infiniband/hw/mlx5/cong.c
View File

@ -47,6 +47,7 @@ static const char * const mlx5_ib_dbg_cc_name[] = {
"rp_byte_reset",
"rp_threshold",
"rp_ai_rate",
"rp_max_rate",
"rp_hai_rate",
"rp_min_dec_fac",
"rp_min_rate",
@ -56,6 +57,7 @@ static const char * const mlx5_ib_dbg_cc_name[] = {
"rp_rate_reduce_monitor_period",
"rp_initial_alpha_value",
"rp_gd",
"np_min_time_between_cnps",
"np_cnp_dscp",
"np_cnp_prio_mode",
"np_cnp_prio",
@ -66,6 +68,7 @@ static const char * const mlx5_ib_dbg_cc_name[] = {
#define MLX5_IB_RP_TIME_RESET_ATTR BIT(3)
#define MLX5_IB_RP_BYTE_RESET_ATTR BIT(4)
#define MLX5_IB_RP_THRESHOLD_ATTR BIT(5)
#define MLX5_IB_RP_MAX_RATE_ATTR BIT(6)
#define MLX5_IB_RP_AI_RATE_ATTR BIT(7)
#define MLX5_IB_RP_HAI_RATE_ATTR BIT(8)
#define MLX5_IB_RP_MIN_DEC_FAC_ATTR BIT(9)
@ -77,6 +80,7 @@ static const char * const mlx5_ib_dbg_cc_name[] = {
#define MLX5_IB_RP_INITIAL_ALPHA_VALUE_ATTR BIT(15)
#define MLX5_IB_RP_GD_ATTR BIT(16)
#define MLX5_IB_NP_MIN_TIME_BETWEEN_CNPS_ATTR BIT(2)
#define MLX5_IB_NP_CNP_DSCP_ATTR BIT(3)
#define MLX5_IB_NP_CNP_PRIO_MODE_ATTR BIT(4)
@ -111,6 +115,9 @@ static u32 mlx5_get_cc_param_val(void *field, int offset)
case MLX5_IB_DBG_CC_RP_AI_RATE:
return MLX5_GET(cong_control_r_roce_ecn_rp, field,
rpg_ai_rate);
case MLX5_IB_DBG_CC_RP_MAX_RATE:
return MLX5_GET(cong_control_r_roce_ecn_rp, field,
rpg_max_rate);
case MLX5_IB_DBG_CC_RP_HAI_RATE:
return MLX5_GET(cong_control_r_roce_ecn_rp, field,
rpg_hai_rate);
@ -138,6 +145,9 @@ static u32 mlx5_get_cc_param_val(void *field, int offset)
case MLX5_IB_DBG_CC_RP_GD:
return MLX5_GET(cong_control_r_roce_ecn_rp, field,
rpg_gd);
case MLX5_IB_DBG_CC_NP_MIN_TIME_BETWEEN_CNPS:
return MLX5_GET(cong_control_r_roce_ecn_np, field,
min_time_between_cnps);
case MLX5_IB_DBG_CC_NP_CNP_DSCP:
return MLX5_GET(cong_control_r_roce_ecn_np, field,
cnp_dscp);
@ -186,6 +196,11 @@ static void mlx5_ib_set_cc_param_mask_val(void *field, int offset,
MLX5_SET(cong_control_r_roce_ecn_rp, field,
rpg_ai_rate, var);
break;
case MLX5_IB_DBG_CC_RP_MAX_RATE:
*attr_mask |= MLX5_IB_RP_MAX_RATE_ATTR;
MLX5_SET(cong_control_r_roce_ecn_rp, field,
rpg_max_rate, var);
break;
case MLX5_IB_DBG_CC_RP_HAI_RATE:
*attr_mask |= MLX5_IB_RP_HAI_RATE_ATTR;
MLX5_SET(cong_control_r_roce_ecn_rp, field,
@ -231,6 +246,11 @@ static void mlx5_ib_set_cc_param_mask_val(void *field, int offset,
MLX5_SET(cong_control_r_roce_ecn_rp, field,
rpg_gd, var);
break;
case MLX5_IB_DBG_CC_NP_MIN_TIME_BETWEEN_CNPS:
*attr_mask |= MLX5_IB_NP_MIN_TIME_BETWEEN_CNPS_ATTR;
MLX5_SET(cong_control_r_roce_ecn_np, field,
min_time_between_cnps, var);
break;
case MLX5_IB_DBG_CC_NP_CNP_DSCP:
*attr_mask |= MLX5_IB_NP_CNP_DSCP_ATTR;
MLX5_SET(cong_control_r_roce_ecn_np, field, cnp_dscp, var);

2
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -792,6 +792,7 @@ enum mlx5_ib_dbg_cc_types {
MLX5_IB_DBG_CC_RP_BYTE_RESET,
MLX5_IB_DBG_CC_RP_THRESHOLD,
MLX5_IB_DBG_CC_RP_AI_RATE,
MLX5_IB_DBG_CC_RP_MAX_RATE,
MLX5_IB_DBG_CC_RP_HAI_RATE,
MLX5_IB_DBG_CC_RP_MIN_DEC_FAC,
MLX5_IB_DBG_CC_RP_MIN_RATE,
@ -801,6 +802,7 @@ enum mlx5_ib_dbg_cc_types {
MLX5_IB_DBG_CC_RP_RATE_REDUCE_MONITOR_PERIOD,
MLX5_IB_DBG_CC_RP_INITIAL_ALPHA_VALUE,
MLX5_IB_DBG_CC_RP_GD,
MLX5_IB_DBG_CC_NP_MIN_TIME_BETWEEN_CNPS,
MLX5_IB_DBG_CC_NP_CNP_DSCP,
MLX5_IB_DBG_CC_NP_CNP_PRIO_MODE,
MLX5_IB_DBG_CC_NP_CNP_PRIO,