IB/{hw,sw}: Remove 'uobject->context' dependency in object creation APIs

Now when we have the udata passed to all the ib_xxx object creation APIs
and the additional macro 'rdma_udata_to_drv_context' to get the
ib_ucontext from ib_udata stored in uverbs_attr_bundle, we can finally
start to remove the dependency of the drivers in the
ib_xxx->uobject->context.

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

drivers/infiniband/hw/cxgb4/qp.c

@@ -31,6 +31,7 @@
  */
 
 #include <linux/module.h>
+#include <rdma/uverbs_ioctl.h>
 
 #include "iw_cxgb4.h"
 
@@ -2136,7 +2137,8 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
 	struct c4iw_cq *rchp;
 	struct c4iw_create_qp_resp uresp;
 	unsigned int sqsize, rqsize = 0;
-	struct c4iw_ucontext *ucontext;
+	struct c4iw_ucontext *ucontext = rdma_udata_to_drv_context(
+		udata, struct c4iw_ucontext, ibucontext);
 	int ret;
 	struct c4iw_mm_entry *sq_key_mm, *rq_key_mm = NULL, *sq_db_key_mm;
 	struct c4iw_mm_entry *rq_db_key_mm = NULL, *ma_sync_key_mm = NULL;
@@ -2170,8 +2172,6 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
 	if (sqsize < 8)
 		sqsize = 8;
 
-	ucontext = udata ? to_c4iw_ucontext(pd->uobject->context) : NULL;
-
 	qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
 	if (!qhp)
 		return ERR_PTR(-ENOMEM);
@@ -2718,7 +2718,8 @@ struct ib_srq *c4iw_create_srq(struct ib_pd *pd, struct ib_srq_init_attr *attrs,
 	rqsize = attrs->attr.max_wr + 1;
 	rqsize = roundup_pow_of_two(max_t(u16, rqsize, 16));
 
-	ucontext = udata ? to_c4iw_ucontext(pd->uobject->context) : NULL;
+	ucontext = rdma_udata_to_drv_context(udata, struct c4iw_ucontext,
+					     ibucontext);
 
 	srq = kzalloc(sizeof(*srq), GFP_KERNEL);
 	if (!srq)