xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net/mlx4_core: Add basic support for QP max-rate limiting

Browse Source 
Add the low-level device commands and definitions used for QP max-rate limiting.

This is done through the following elements:

  - read rate-limit device caps in QUERY_DEV_CAP: number of different
    rates and the min/max rates in Kbs/Mbs/Gbs units

  - enhance the QP context struct to contain rate limit units and value

  - allow to do run time rate-limit setting to QPs through the
    update-qp firmware command

  - QP rate-limiting is disallowed for VFs

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Or Gerlitz
2015-03-18 14:57:34 +02:00
committed by David S. Miller
parent 822b3b2ebf
commit fc31e2560a
7 changed files with 72 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
include/linux/mlx4/device.h
View File

@@ -205,6 +205,7 @@ enum {
MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT = 1LL << 20,
MLX4_DEV_CAP_FLAG2_PORT_REMAP = 1LL << 21,
MLX4_DEV_CAP_FLAG2_QCN = 1LL << 22,
MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT = 1LL << 23
};
enum {
@@ -450,6 +451,21 @@ enum mlx4_module_id {
MLX4_MODULE_ID_QSFP28 = 0x11,
};
enum { /* rl */
MLX4_QP_RATE_LIMIT_NONE = 0,
MLX4_QP_RATE_LIMIT_KBS = 1,
MLX4_QP_RATE_LIMIT_MBS = 2,
MLX4_QP_RATE_LIMIT_GBS = 3
};
struct mlx4_rate_limit_caps {
u16 num_rates; /* Number of different rates */
u8 min_unit;
u16 min_val;
u8 max_unit;
u16 max_val;
};
static inline u64 mlx4_fw_ver(u64 major, u64 minor, u64 subminor)
{
return (major << 32) | (minor << 16) | subminor;
@@ -565,6 +581,7 @@ struct mlx4_caps {
u32 dmfs_high_rate_qpn_base;
u32 dmfs_high_rate_qpn_range;
u32 vf_caps;
struct mlx4_rate_limit_caps rl_caps;
};
struct mlx4_buf_list {