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RDMA/mlx5: Rely on existence of udata to separate kernel/user flows

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Instead of keeping special field to separate kernel/user create/destroy
flows, rely on existence of udata pointer. All allocation flows are
using kzalloc() and leave uninitialized pointers as NULL which makes
MLX5_QP_EMPTY and MLX5_QP_KERNEL flows to be the same.

Link: https://lore.kernel.org/r/20200427154636.381474-25-leon@kernel.org
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky 2020-04-27 18:46:24 +03:00 committed by Jason Gunthorpe
parent 76883a6cc1
commit 03c4077b28
2 changed files with 10 additions and 27 deletions
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14
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -337,7 +337,6 @@ struct mlx5_ib_rwq {
struct ib_umem *umem;
size_t buf_size;
unsigned int page_shift;
int create_type;
struct mlx5_db db;
u32 user_index;
u32 wqe_count;
@ -346,17 +345,6 @@ struct mlx5_ib_rwq {
u32 create_flags; /* Use enum mlx5_ib_wq_flags */
};
enum {
MLX5_QP_USER,
MLX5_QP_KERNEL,
MLX5_QP_EMPTY
};
enum {
MLX5_WQ_USER,
MLX5_WQ_KERNEL
};
struct mlx5_ib_rwq_ind_table {
struct ib_rwq_ind_table ib_rwq_ind_tbl;
u32 rqtn;
@ -457,8 +445,6 @@ struct mlx5_ib_qp {
*/
int bfregn;
int create_type;
struct list_head qps_list;
struct list_head cq_recv_list;
struct list_head cq_send_list;

23
drivers/infiniband/hw/mlx5/qp.c
View File

@ -897,7 +897,6 @@ static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
goto err_umem;
}
rwq->create_type = MLX5_WQ_USER;
return 0;
err_umem:
@ -1022,7 +1021,6 @@ static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
mlx5_ib_dbg(dev, "copy failed\n");
goto err_unmap;
}
qp->create_type = MLX5_QP_USER;
return 0;
@ -1187,7 +1185,6 @@ static int create_kernel_qp(struct mlx5_ib_dev *dev,
err = -ENOMEM;
goto err_wrid;
}
qp->create_type = MLX5_QP_KERNEL;
return 0;
@ -1214,8 +1211,10 @@ static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
kvfree(qp->sq.wrid);
kvfree(qp->sq.wr_data);
kvfree(qp->rq.wrid);
mlx5_db_free(dev->mdev, &qp->db);
mlx5_frag_buf_free(dev->mdev, &qp->buf);
if (qp->db.db)
mlx5_db_free(dev->mdev, &qp->db);
if (qp->buf.frags)
mlx5_frag_buf_free(dev->mdev, &qp->buf);
}
static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
@ -2000,8 +1999,6 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
qp->create_type = MLX5_QP_EMPTY;
}
if (is_sqp(init_attr->qp_type))
@ -2155,9 +2152,9 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
return 0;
err_create:
if (qp->create_type == MLX5_QP_USER)
if (udata)
destroy_qp_user(dev, pd, qp, base, udata);
else if (qp->create_type == MLX5_QP_KERNEL)
else
destroy_qp_kernel(dev, qp);
err:
@ -2311,7 +2308,7 @@ static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
if (recv_cq)
list_del(&qp->cq_recv_list);
if (qp->create_type == MLX5_QP_KERNEL) {
if (!udata) {
__mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
if (send_cq != recv_cq)
@ -2331,10 +2328,10 @@ static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
base->mqp.qpn);
}
if (qp->create_type == MLX5_QP_KERNEL)
destroy_qp_kernel(dev, qp);
else if (qp->create_type == MLX5_QP_USER)
if (udata)
destroy_qp_user(dev, &get_pd(qp)->ibpd, qp, base, udata);
else
destroy_qp_kernel(dev, qp);
}
static int create_dct(struct ib_pd *pd, struct mlx5_ib_qp *qp,