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| author |   Parav Pandit <parav@mellanox.com> | 2020-02-27 14:52:46 +0200 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2020-03-04 14:20:03 -0400 |
| commit | 9e3aaf6883b3b47d9f14579c1a03c911dd17cf10 (patch) | |
| tree | 6f7686e986e814c0f880cad8ba9bacde492979f5 /drivers/infiniband/hw/mlx5/cong.c | |
| parent | IB/mlx5: Optimize u64 division on 32-bit arches (diff) | |
| download | linux-dev-9e3aaf6883b3b47d9f14579c1a03c911dd17cf10.tar.xz linux-dev-9e3aaf6883b3b47d9f14579c1a03c911dd17cf10.zip | |
IB/mlx5: Add np_min_time_between_cnps and rp_max_rate debug params
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>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/cong.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/cong.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/cong.c b/drivers/infiniband/hw/mlx5/cong.c index 8ba439fabf7f..de4da92b81a6 100644 --- a/drivers/infiniband/hw/mlx5/cong.c +++ b/drivers/infiniband/hw/mlx5/cong.c @@ -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); |