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net/mlx5: Use u16 for Work Queue buffer strides offset 

Minimal stride size is 16.
Hence, the number of strides in a fragment (of PAGE_SIZE)
is <= PAGE_SIZE / 16 <= 4K.

u16 is sufficient to represent this.

Fixes: d7037ad73d ("net/mlx5: Fix QP fragmented buffer allocation")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
hifive-unleashed-5.1
Tariq Toukan 2018-08-21 16:07:58 +03:00 committed by Saeed Mahameed
parent 8d71e81850
commit a090362210
2 changed files with 3 additions and 3 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/wq.c
View File

@ -138,7 +138,7 @@ int mlx5_wq_qp_create(struct mlx5_core_dev *mdev, struct mlx5_wq_param *param,
void *qpc, struct mlx5_wq_qp *wq,
struct mlx5_wq_ctrl *wq_ctrl)
{
u32 sq_strides_offset;
u16 sq_strides_offset;
u32 rq_pg_remainder;
int err;

4
include/linux/mlx5/driver.h
View File

@ -363,7 +363,7 @@ struct mlx5_frag_buf_ctrl {
struct mlx5_frag_buf frag_buf;
u32 sz_m1;
u16 frag_sz_m1;
u32 strides_offset;
u16 strides_offset;
u8 log_sz;
u8 log_stride;
u8 log_frag_strides;
@ -995,7 +995,7 @@ static inline u32 mlx5_base_mkey(const u32 key)
}
static inline void mlx5_fill_fbc_offset(u8 log_stride, u8 log_sz,
u32 strides_offset,
u16 strides_offset,
struct mlx5_frag_buf_ctrl *fbc)
{
fbc->log_stride = log_stride;