From: Leon Romanovsky <leonro@mellanox.com>
Date: Mon, 27 Apr 2020 18:46:04 +0300
Subject: RDMA/mlx5: Prepare QP allocation for future removal
Patch-mainline: v5.8-rc1
Git-commit: 9c2ba4ede4c0166d4e3bdc15e3b32c9680309ca1
References: jsc#SLE-15175
Unify the QP memory allocation across different paths,
so it will be in one place.
Link: https://lore.kernel.org/r/20200427154636.381474-5-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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/mlx5/qp.c | 45 +++++++++++++++++-----------------------
1 file changed, 20 insertions(+), 25 deletions(-)
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -2557,14 +2557,13 @@ static void destroy_qp_common(struct mlx
destroy_qp_user(dev, &get_pd(qp)->ibpd, qp, base, udata);
}
-static struct ib_qp *mlx5_ib_create_dct(struct ib_pd *pd,
+static struct ib_qp *mlx5_ib_create_dct(struct ib_pd *pd, struct mlx5_ib_qp *qp,
struct ib_qp_init_attr *attr,
struct mlx5_ib_create_qp *ucmd,
struct ib_udata *udata)
{
struct mlx5_ib_ucontext *ucontext = rdma_udata_to_drv_context(
udata, struct mlx5_ib_ucontext, ibucontext);
- struct mlx5_ib_qp *qp;
int err = 0;
u32 uidx = MLX5_IB_DEFAULT_UIDX;
void *dctc;
@@ -2576,15 +2575,9 @@ static struct ib_qp *mlx5_ib_create_dct(
if (err)
return ERR_PTR(err);
- qp = kzalloc(sizeof(*qp), GFP_KERNEL);
- if (!qp)
- return ERR_PTR(-ENOMEM);
-
qp->dct.in = kzalloc(MLX5_ST_SZ_BYTES(create_dct_in), GFP_KERNEL);
- if (!qp->dct.in) {
- err = -ENOMEM;
- goto err_free;
- }
+ if (!qp->dct.in)
+ return ERR_PTR(-ENOMEM);
MLX5_SET(create_dct_in, qp->dct.in, uid, to_mpd(pd)->uid);
dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry);
@@ -2601,9 +2594,6 @@ static struct ib_qp *mlx5_ib_create_dct(
qp->state = IB_QPS_RESET;
return &qp->ibqp;
-err_free:
- kfree(qp);
- return ERR_PTR(err);
}
static int set_mlx_qp_type(struct mlx5_ib_dev *dev,
@@ -2752,6 +2742,13 @@ struct ib_qp *mlx5_ib_create_qp(struct i
if (err)
return ERR_PTR(err);
+ if (init_attr->qp_type == IB_QPT_GSI)
+ return mlx5_ib_gsi_create_qp(pd, init_attr);
+
+ qp = kzalloc(sizeof(*qp), GFP_KERNEL);
+ if (!qp)
+ return ERR_PTR(-ENOMEM);
+
if (init_attr->qp_type == IB_QPT_DRIVER) {
struct mlx5_ib_create_qp ucmd;
@@ -2759,22 +2756,21 @@ struct ib_qp *mlx5_ib_create_qp(struct i
memcpy(init_attr, verbs_init_attr, sizeof(*verbs_init_attr));
err = set_mlx_qp_type(dev, init_attr, &ucmd, udata);
if (err)
- return ERR_PTR(err);
+ goto free_qp;
if (init_attr->qp_type == MLX5_IB_QPT_DCI) {
if (init_attr->cap.max_recv_wr ||
init_attr->cap.max_recv_sge) {
mlx5_ib_dbg(dev, "DCI QP requires zero size receive queue\n");
- return ERR_PTR(-EINVAL);
+ err = -EINVAL;
+ goto free_qp;
}
} else {
- return mlx5_ib_create_dct(pd, init_attr, &ucmd, udata);
+ return mlx5_ib_create_dct(pd, qp, init_attr, &ucmd,
+ udata);
}
}
- if (init_attr->qp_type == IB_QPT_GSI)
- return mlx5_ib_gsi_create_qp(pd, init_attr);
-
if (init_attr->qp_type == IB_QPT_XRC_TGT) {
init_attr->recv_cq = NULL;
xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
@@ -2784,15 +2780,10 @@ struct ib_qp *mlx5_ib_create_qp(struct i
if (init_attr->qp_type == IB_QPT_XRC_INI)
init_attr->recv_cq = NULL;
- qp = kzalloc(sizeof(*qp), GFP_KERNEL);
- if (!qp)
- return ERR_PTR(-ENOMEM);
-
err = create_qp_common(dev, pd, init_attr, udata, qp);
if (err) {
mlx5_ib_dbg(dev, "create_qp_common failed\n");
- kfree(qp);
- return ERR_PTR(err);
+ goto free_qp;
}
if (is_qp0(init_attr->qp_type))
@@ -2808,6 +2799,10 @@ struct ib_qp *mlx5_ib_create_qp(struct i
qp->qp_sub_type = init_attr->qp_type;
return &qp->ibqp;
+
+free_qp:
+ kfree(qp);
+ return ERR_PTR(err);
}
static int mlx5_ib_destroy_dct(struct mlx5_ib_qp *mqp)