RDMA: Change XRCD destroy return value

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>

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 93503f1..1172656 100644 (file)
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -2345,13 +2345,17 @@ 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 1be0108..8e1e3b8 100644 (file)
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -1256,11 +1256,12 @@ err2:
        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 0a65f7b..041f9d1 100644 (file)
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -1196,7 +1196,7 @@ 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 ee7265f..e0b6115 100644 (file)
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -4745,12 +4745,12 @@ 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 bec05ba..e25e25a 100644 (file)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2452,7 +2452,7 @@ 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,
                                       struct ib_udata *udata);