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authorDaniel Jurgens <danielj@mellanox.com>2018-11-21 17:12:05 +0200
committerDavid S. Miller <davem@davemloft.net>2018-11-22 11:38:36 -0800
commite45678973dcbb131f29a6c90b0ea3829f38eeab8 (patch)
tree7c832cf06e48233a27040f9134bd70b14d77debf /include/linux/mlx4
parent1d0795ea9ca37be0fa0823776e0367b8fc398c91 (diff)
{net, IB}/mlx4: Initialize CQ buffers in the driver when possible
Perform CQ initialization in the driver when the capability is supported by the FW. When passing the CQ to HW indicate that the CQ buffer has been pre-initialized. Doing so decreases CQ creation time. Testing on P8 showed a single 2048 entry CQ creation time was reduced from ~395us to ~170us, which is 2.3x faster. Signed-off-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/mlx4')
-rw-r--r--include/linux/mlx4/device.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index dca6ab4eaa99..36e412c3d657 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -226,6 +226,7 @@ enum {
MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT = 1ULL << 37,
MLX4_DEV_CAP_FLAG2_USER_MAC_EN = 1ULL << 38,
MLX4_DEV_CAP_FLAG2_DRIVER_VERSION_TO_FW = 1ULL << 39,
+ MLX4_DEV_CAP_FLAG2_SW_CQ_INIT = 1ULL << 40,
};
enum {
@@ -1136,7 +1137,8 @@ void mlx4_free_hwq_res(struct mlx4_dev *mdev, struct mlx4_hwq_resources *wqres,
int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt,
struct mlx4_uar *uar, u64 db_rec, struct mlx4_cq *cq,
- unsigned vector, int collapsed, int timestamp_en);
+ unsigned int vector, int collapsed, int timestamp_en,
+ void *buf_addr, bool user_cq);
void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq);
int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align,
int *base, u8 flags, u8 usage);