IB: Pass only ib_udata in function prototypes

Now when ib_udata is passed to all the driver's object create/destroy APIs
the ib_udata will carry the ib_ucontext for every user command. There is
no need to also pass the ib_ucontext via the functions prototypes.

Make ib_udata the only argument psssed.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/sw/rxe/rxe_mmap.c

@@ -36,6 +36,7 @@
 #include <linux/mm.h>
 #include <linux/errno.h>
 #include <asm/pgtable.h>
+#include <rdma/uverbs_ioctl.h>
 
 #include "rxe.h"
 #include "rxe_loc.h"
@@ -140,13 +141,14 @@ done:
 /*
  * Allocate information for rxe_mmap
  */
-struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *rxe,
-					   u32 size,
-					   struct ib_ucontext *context,
-					   void *obj)
+struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *rxe, u32 size,
+					   struct ib_udata *udata, void *obj)
 {
 	struct rxe_mmap_info *ip;
 
+	if (!udata)
+		return ERR_PTR(-EINVAL);
+
 	ip = kmalloc(sizeof(*ip), GFP_KERNEL);
 	if (!ip)
 		return NULL;
@@ -165,7 +167,9 @@ struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *rxe,
 
 	INIT_LIST_HEAD(&ip->pending_mmaps);
 	ip->info.size = size;
-	ip->context = context;
+	ip->context =
+		container_of(udata, struct uverbs_attr_bundle, driver_udata)
+			->context;
 	ip->obj = obj;
 	kref_init(&ip->ref);