From: Leon Romanovsky <leonro@mellanox.com>
Date: Tue, 30 Jun 2020 13:18:54 +0300
Subject: RDMA: Move XRCD to be under ib_core responsibility
Patch-mainline: v5.9-rc1
Git-commit: 28ad5f65c314ffdd5888d6afa61772d3032a332c
References: jsc#SLE-15176
Update the code to allocate and free ib_xrcd structure in the
ib_core instead of inside drivers.
Link: https://lore.kernel.org/r/20200630101855.368895-4-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/core/device.c | 1
drivers/infiniband/core/verbs.c | 30 ++++++++++++++++++----------
drivers/infiniband/hw/mlx4/main.c | 37 ++++++++++++++---------------------
drivers/infiniband/hw/mlx5/main.c | 2 +
drivers/infiniband/hw/mlx5/mlx5_ib.h | 5 +---
drivers/infiniband/hw/mlx5/qp.c | 32 ++++++------------------------
include/rdma/ib_verbs.h | 6 ++---
7 files changed, 50 insertions(+), 63 deletions(-)
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -2696,6 +2696,7 @@ void ib_set_device_ops(struct ib_device
SET_OBJ_SIZE(dev_ops, ib_pd);
SET_OBJ_SIZE(dev_ops, ib_srq);
SET_OBJ_SIZE(dev_ops, ib_ucontext);
+ SET_OBJ_SIZE(dev_ops, ib_xrcd);
}
EXPORT_SYMBOL(ib_set_device_ops);
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -2293,20 +2293,28 @@ struct ib_xrcd *ib_alloc_xrcd_user(struc
struct inode *inode, struct ib_udata *udata)
{
struct ib_xrcd *xrcd;
+ int ret;
if (!device->ops.alloc_xrcd)
return ERR_PTR(-EOPNOTSUPP);
- xrcd = device->ops.alloc_xrcd(device, udata);
- if (!IS_ERR(xrcd)) {
- xrcd->device = device;
- xrcd->inode = inode;
- atomic_set(&xrcd->usecnt, 0);
- init_rwsem(&xrcd->tgt_qps_rwsem);
- xa_init(&xrcd->tgt_qps);
- }
-
+ xrcd = rdma_zalloc_drv_obj(device, ib_xrcd);
+ if (!xrcd)
+ return ERR_PTR(-ENOMEM);
+
+ xrcd->device = device;
+ xrcd->inode = inode;
+ atomic_set(&xrcd->usecnt, 0);
+ init_rwsem(&xrcd->tgt_qps_rwsem);
+ xa_init(&xrcd->tgt_qps);
+
+ ret = device->ops.alloc_xrcd(xrcd, udata);
+ if (ret)
+ goto err;
return xrcd;
+err:
+ kfree(xrcd);
+ return ERR_PTR(ret);
}
EXPORT_SYMBOL(ib_alloc_xrcd_user);
@@ -2321,7 +2329,9 @@ int ib_dealloc_xrcd_user(struct ib_xrcd
return -EBUSY;
WARN_ON(!xa_empty(&xrcd->tgt_qps));
- return xrcd->device->ops.dealloc_xrcd(xrcd, udata);
+ xrcd->device->ops.dealloc_xrcd(xrcd, udata);
+ kfree(xrcd);
+ return 0;
}
EXPORT_SYMBOL(ib_dealloc_xrcd_user);
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -1219,56 +1219,47 @@ static void mlx4_ib_dealloc_pd(struct ib
mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
}
-static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
- struct ib_udata *udata)
+static int mlx4_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
{
- struct mlx4_ib_xrcd *xrcd;
+ struct mlx4_ib_dev *dev = to_mdev(ibxrcd->device);
+ struct mlx4_ib_xrcd *xrcd = to_mxrcd(ibxrcd);
struct ib_cq_init_attr cq_attr = {};
int err;
- if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
- return ERR_PTR(-ENOSYS);
-
- xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
- if (!xrcd)
- return ERR_PTR(-ENOMEM);
+ if (!(dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
+ return -EOPNOTSUPP;
- err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
+ err = mlx4_xrcd_alloc(dev->dev, &xrcd->xrcdn);
if (err)
- goto err1;
+ return err;
- xrcd->pd = ib_alloc_pd(ibdev, 0);
+ xrcd->pd = ib_alloc_pd(ibxrcd->device, 0);
if (IS_ERR(xrcd->pd)) {
err = PTR_ERR(xrcd->pd);
goto err2;
}
cq_attr.cqe = 1;
- xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, &cq_attr);
+ xrcd->cq = ib_create_cq(ibxrcd->device, NULL, NULL, xrcd, &cq_attr);
if (IS_ERR(xrcd->cq)) {
err = PTR_ERR(xrcd->cq);
goto err3;
}
- return &xrcd->ibxrcd;
+ return 0;
err3:
ib_dealloc_pd(xrcd->pd);
err2:
- mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
-err1:
- kfree(xrcd);
- return ERR_PTR(err);
+ mlx4_xrcd_free(dev->dev, xrcd->xrcdn);
+ return err;
}
-static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
+static void 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);
- kfree(xrcd);
-
- return 0;
}
static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
@@ -2607,6 +2598,8 @@ static const struct ib_device_ops mlx4_i
static const struct ib_device_ops mlx4_ib_dev_xrc_ops = {
.alloc_xrcd = mlx4_ib_alloc_xrcd,
.dealloc_xrcd = mlx4_ib_dealloc_xrcd,
+
+ INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx4_ib_xrcd, ibxrcd),
};
static const struct ib_device_ops mlx4_ib_dev_fs_ops = {
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -6671,6 +6671,8 @@ static const struct ib_device_ops mlx5_i
static const struct ib_device_ops mlx5_ib_dev_xrc_ops = {
.alloc_xrcd = mlx5_ib_alloc_xrcd,
.dealloc_xrcd = mlx5_ib_dealloc_xrcd,
+
+ INIT_RDMA_OBJ_SIZE(ib_xrcd, mlx5_ib_xrcd, ibxrcd),
};
static const struct ib_device_ops mlx5_ib_dev_dm_ops = {
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -1224,9 +1224,8 @@ int mlx5_ib_process_mad(struct ib_device
const struct ib_wc *in_wc, const struct ib_grh *in_grh,
const struct ib_mad *in, struct ib_mad *out,
size_t *out_mad_size, u16 *out_mad_pkey_index);
-struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
- struct ib_udata *udata);
-int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata);
+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_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,
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -4708,41 +4708,23 @@ out:
return err;
}
-struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
- struct ib_udata *udata)
+int mlx5_ib_alloc_xrcd(struct ib_xrcd *ibxrcd, struct ib_udata *udata)
{
- struct mlx5_ib_dev *dev = to_mdev(ibdev);
- struct mlx5_ib_xrcd *xrcd;
- int err;
+ struct mlx5_ib_dev *dev = to_mdev(ibxrcd->device);
+ struct mlx5_ib_xrcd *xrcd = to_mxrcd(ibxrcd);
if (!MLX5_CAP_GEN(dev->mdev, xrc))
- return ERR_PTR(-ENOSYS);
+ return -EOPNOTSUPP;
- xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL);
- if (!xrcd)
- return ERR_PTR(-ENOMEM);
-
- err = mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0);
- if (err) {
- kfree(xrcd);
- return ERR_PTR(-ENOMEM);
- }
-
- return &xrcd->ibxrcd;
+ return mlx5_cmd_xrcd_alloc(dev->mdev, &xrcd->xrcdn, 0);
}
-int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata)
+void 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;
- int err;
-
- err = mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
- if (err)
- mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
- kfree(xrcd);
- return 0;
+ mlx5_cmd_xrcd_dealloc(dev->mdev, xrcdn, 0);
}
static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2492,9 +2492,8 @@ struct ib_device_ops {
int (*dealloc_mw)(struct ib_mw *mw);
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);
- struct ib_xrcd *(*alloc_xrcd)(struct ib_device *device,
- struct ib_udata *udata);
- int (*dealloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata);
+ int (*alloc_xrcd)(struct ib_xrcd *xrcd, struct ib_udata *udata);
+ void (*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);
@@ -2653,6 +2652,7 @@ struct ib_device_ops {
DECLARE_RDMA_OBJ_SIZE(ib_pd);
DECLARE_RDMA_OBJ_SIZE(ib_srq);
DECLARE_RDMA_OBJ_SIZE(ib_ucontext);
+ DECLARE_RDMA_OBJ_SIZE(ib_xrcd);
};
struct ib_core_device {