IB/uverbs: Do not pass struct ib_device to the ioctl methods

This does the same as the patch before, except for ioctl. The rules are
the same, but for the ioctl methods the core code handles setting up the
uobject.

- Retrieve the ib_dev from the uobject->context->device. This is
  safe under ioctl as the core has already done rdma_alloc_begin_uobject
  and so CREATE calls are entirely protected by the rwsem.
- Retrieve the ib_dev from uobject->object
- Call ib_uverbs_get_ucontext()

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

2 files changed, 3 insertions, 4 deletions

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index be208421f7d3..dea770e5b9ae 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4170,7 +4170,6 @@ void rdma_roce_rescan_device(struct ib_device *ibdev);
 
 struct ib_ucontext *ib_uverbs_get_ucontext(struct ib_uverbs_file *ufile);
 
-int uverbs_destroy_def_handler(struct ib_device *ib_dev,
-			       struct ib_uverbs_file *file,
+int uverbs_destroy_def_handler(struct ib_uverbs_file *file,
 			       struct uverbs_attr_bundle *attrs);
 #endif /* IB_VERBS_H */
diff --git a/include/rdma/uverbs_ioctl.h b/include/rdma/uverbs_ioctl.h
index 5e6d0569d97c..8d71b7a7f147 100644
--- a/include/rdma/uverbs_ioctl.h
+++ b/include/rdma/uverbs_ioctl.h
@@ -128,7 +128,7 @@ struct uverbs_method_spec {
 	u32						flags;
 	size_t						num_buckets;
 	size_t						num_child_attrs;
-	int (*handler)(struct ib_device *ib_dev, struct ib_uverbs_file *ufile,
+	int (*handler)(struct ib_uverbs_file *ufile,
 		       struct uverbs_attr_bundle *ctx);
 	struct uverbs_attr_spec_hash		*attr_buckets[0];
 };
@@ -171,7 +171,7 @@ struct uverbs_method_def {
 	u32				     flags;
 	size_t				     num_attrs;
 	const struct uverbs_attr_def * const (*attrs)[];
-	int (*handler)(struct ib_device *ib_dev, struct ib_uverbs_file *ufile,
+	int (*handler)(struct ib_uverbs_file *ufile,
 		       struct uverbs_attr_bundle *ctx);
 };