[PATCH 5.9 430/757] RDMA: Change XRCD destroy return value

Greg Kroah-Hartman
2020-10-27T15:56:48Z

From: Leon Romanovsky <leonro@mellanox.com>

[ Upstream commit d0c45c8556e57342d44c9548763609ffcc4e3866 ]

Update XRCD destroy flow to allow command failure.

Fixes: 28ad5f65c314 ("RDMA: Move XRCD to be under ib_core responsibility")
Link: https://lore.kernel.org/r/20200907120921.476363-8-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/core/verbs.c | 8 ++++++--
drivers/infiniband/hw/mlx4/main.c | 3 ++-
drivers/infiniband/hw/mlx5/mlx5_ib.h | 2 +-
drivers/infiniband/hw/mlx5/qp.c | 4 ++--
include/rdma/ib_verbs.h | 2 +-
5 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index c8b650f240d5f..b411be9321bdf 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -2333,13 +2333,17 @@ EXPORT_SYMBOL(ib_alloc_xrcd_user);
*/
int ib_dealloc_xrcd_user(struct ib_xrcd *xrcd, struct ib_udata *udata)
{
+ int ret;
+
if (atomic_read(&xrcd->usecnt))
return -EBUSY;

WARN_ON(!xa_empty(&xrcd->tgt_qps));
- xrcd->device->ops.dealloc_xrcd(xrcd, udata);
+ ret = xrcd->device->ops.dealloc_xrcd(xrcd, udata);
+ if (ret)
+ return ret;
kfree(xrcd);
- return 0;
+ return ret;
}
EXPORT_SYMBOL(ib_dealloc_xrcd_user);

diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index bd4f975e7f9ac..d22bf9a4b53e2 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -1256,11 +1256,12 @@ static int mlx4_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
return err;
}

-static void mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
+static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
{
ib_destroy_cq(to_mxrcd(xrcd)->cq);
ib_dealloc_pd(to_mxrcd(xrcd)->pd);
mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
+ return 0;
}

static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 0d4b88389beb8..2f06677adaa2a 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -1193,7 +1193,7 @@ int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
const struct ib_mad *in, struct ib_mad *out,
size_t *out_mad_size, u16 *out_mad_pkey_index);
int mlx5_ib_alloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata);
-void mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata);
+int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata);
int mlx5_ib_get_buf_offset(u64 addr, int page_shift, u32 *offset);
int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port);
int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 5758dbe640451..cda7608b6f2d9 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -4716,12 +4716,12 @@ int mlx5_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
return mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0);
}

-void mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
+int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
u32 xrcdn = to_mxrcd(xrcd)->xrcdn;

- mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
+ return mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
}

static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index f64c1d02b9350..8cccbdef5de2a 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2468,7 +2468,7 @@ struct ib_device_ops {
int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
int (*alloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata);
- void (*dealloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata);
+ int (*dealloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata);
struct ib_flow *(*create_flow)(struct ib_qp *qp,
struct ib_flow_attr *flow_attr,
int domain, struct ib_udata *udata);
--
2.25.1