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net/mlx5: Introduce set delay drop command 

Add support to SET_DELAY_DROP command.

This command will be used in downstream patches for delay packet drop.
The timeout value should be indicated by delay_drop_timeout field.
Packet processing will be delayed till timeout value passed or until
more WQEs are posted.

Setting this value to 0 disables the feature.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Maor Gottlieb 2017-05-30 10:29:11 +03:00 committed by Doug Ledford
parent 7d9336d80b
commit c1e0bfc131
3 changed files with 41 additions and 1 deletions
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14
drivers/net/ethernet/mellanox/mlx5/core/qp.c
View File

@ -242,6 +242,20 @@ int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
}
EXPORT_SYMBOL_GPL(mlx5_core_destroy_qp);
int mlx5_core_set_delay_drop(struct mlx5_core_dev *dev,
u32 timeout_usec)
{
u32 out[MLX5_ST_SZ_DW(set_delay_drop_params_out)] = {0};
u32 in[MLX5_ST_SZ_DW(set_delay_drop_params_in)] = {0};
MLX5_SET(set_delay_drop_params_in, in, opcode,
MLX5_CMD_OP_SET_DELAY_DROP_PARAMS);
MLX5_SET(set_delay_drop_params_in, in, delay_drop_timeout,
timeout_usec / 100);
return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
}
EXPORT_SYMBOL_GPL(mlx5_core_set_delay_drop);
struct mbox_info {
u32 *in;
u32 *out;

25
include/linux/mlx5/mlx5_ifc.h
View File

@ -200,6 +200,7 @@ enum {
MLX5_CMD_OP_QUERY_SQ = 0x907,
MLX5_CMD_OP_CREATE_RQ = 0x908,
MLX5_CMD_OP_MODIFY_RQ = 0x909,
MLX5_CMD_OP_SET_DELAY_DROP_PARAMS = 0x910,
MLX5_CMD_OP_DESTROY_RQ = 0x90a,
MLX5_CMD_OP_QUERY_RQ = 0x90b,
MLX5_CMD_OP_CREATE_RMP = 0x90c,
@ -840,7 +841,7 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 retransmission_q_counters[0x1];
u8 reserved_at_183[0x1];
u8 modify_rq_counter_set_id[0x1];
u8 reserved_at_185[0x1];
u8 rq_delay_drop[0x1];
u8 max_qp_cnt[0xa];
u8 pkey_table_size[0x10];
@ -5853,6 +5854,28 @@ struct mlx5_ifc_destroy_rq_in_bits {
u8 reserved_at_60[0x20];
};
struct mlx5_ifc_set_delay_drop_params_in_bits {
u8 opcode[0x10];
u8 reserved_at_10[0x10];
u8 reserved_at_20[0x10];
u8 op_mod[0x10];
u8 reserved_at_40[0x20];
u8 reserved_at_60[0x10];
u8 delay_drop_timeout[0x10];
};
struct mlx5_ifc_set_delay_drop_params_out_bits {
u8 status[0x8];
u8 reserved_at_8[0x18];
u8 syndrome[0x20];
u8 reserved_at_40[0x40];
};
struct mlx5_ifc_destroy_rmp_out_bits {
u8 status[0x8];
u8 reserved_at_8[0x18];

3
include/linux/mlx5/qp.h
View File

@ -561,6 +561,9 @@ int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
int mlx5_core_qp_query(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
u32 *out, int outlen);
int mlx5_core_set_delay_drop(struct mlx5_core_dev *dev,
u32 timeout_usec);
int mlx5_core_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn);
int mlx5_core_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn);
void mlx5_init_qp_table(struct mlx5_core_dev *dev);