If user requested signature enable we Initialize
relevant mlx5_ib_qp members. we mark the qp as sig_enable
and we increase the effective SQ size, but still
limit the user max_send_wr to original size computed.
We also allow the create_qp routine to accept sig_enable
create flag.
Signed-off-by: Sagi Grimberg <sa...@mellanox.com>
---
drivers/infiniband/hw/mlx5/mlx5_ib.h | 3 +++
drivers/infiniband/hw/mlx5/qp.c | 12 +++++++++---
include/linux/mlx5/qp.h | 1 +
3 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h
b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 79c4f14..e438f08 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -189,6 +189,9 @@ struct mlx5_ib_qp {
int create_type;
u32 pa_lkey;
+
+ /* Store signature errors */
+ bool signature_en;
};
struct mlx5_ib_cq_buf {
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 7dfe8a1..01999f3 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -256,8 +256,11 @@ static int calc_send_wqe(struct ib_qp_init_attr *attr)
}
size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
-
- return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
+ if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN &&
+ ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB) <
MLX5_SIG_WQE_SIZE)
+ return MLX5_SIG_WQE_SIZE;
+ else
+ return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
}
static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
@@ -284,6 +287,9 @@ static int calc_sq_size(struct mlx5_ib_dev *dev, struct
ib_qp_init_attr *attr,
sizeof(struct mlx5_wqe_inline_seg);
attr->cap.max_inline_data = qp->max_inline_data;
+ if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN)
+ qp->signature_en = true;
+
wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
if (qp->sq.wqe_cnt > dev->mdev.caps.max_wqes) {
@@ -665,7 +671,7 @@ static int create_kernel_qp(struct mlx5_ib_dev *dev,
int err;
uuari = &dev->mdev.priv.uuari;
- if (init_attr->create_flags)
+ if (init_attr->create_flags & ~IB_QP_CREATE_SIGNATURE_EN)
return -EINVAL;
if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
diff --git a/include/linux/mlx5/qp.h b/include/linux/mlx5/qp.h
index d51eff7..c809725 100644
--- a/include/linux/mlx5/qp.h
+++ b/include/linux/mlx5/qp.h
@@ -37,6 +37,7 @@
#include <linux/mlx5/driver.h>
#define MLX5_INVALID_LKEY 0x100
+#define MLX5_SIG_WQE_SIZE MLX5_SEND_WQE_BB * 5
enum mlx5_qp_optpar {
MLX5_QP_OPTPAR_ALT_ADDR_PATH = 1 << 0,
--
1.7.1
--
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