IB/{core,hw}: Have ib_umem_get extract the ib_ucontext from ib_udata

ib_umem_get() can only be called in a method callback, which always has a
udata parameter. This allows ib_umem_get() to derive the ucontext pointer
directly from the udata without requiring the drivers to find it in some
way or another.

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

drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c

@@ -141,7 +141,7 @@ struct ib_cq *pvrdma_create_cq(struct ib_device *ibdev,
 			goto err_cq;
 		}
 
-		cq->umem = ib_umem_get(context, ucmd.buf_addr, ucmd.buf_size,
+		cq->umem = ib_umem_get(udata, ucmd.buf_addr, ucmd.buf_size,
 				       IB_ACCESS_LOCAL_WRITE, 1);
 		if (IS_ERR(cq->umem)) {
 			ret = PTR_ERR(cq->umem);

drivers/infiniband/hw/vmw_pvrdma/pvrdma_mr.c

@@ -126,8 +126,7 @@ struct ib_mr *pvrdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 		return ERR_PTR(-EINVAL);
 	}
 
-	umem = ib_umem_get(pd->uobject->context, start,
-			   length, access_flags, 0);
+	umem = ib_umem_get(udata, start, length, access_flags, 0);
 	if (IS_ERR(umem)) {
 		dev_warn(&dev->pdev->dev,
 			 "could not get umem for mem region\n");

drivers/infiniband/hw/vmw_pvrdma/pvrdma_qp.c

@@ -262,8 +262,7 @@ struct ib_qp *pvrdma_create_qp(struct ib_pd *pd,
 
 			if (!is_srq) {
 				/* set qp->sq.wqe_cnt, shift, buf_size.. */
-				qp->rumem = ib_umem_get(pd->uobject->context,
-							ucmd.rbuf_addr,
+				qp->rumem = ib_umem_get(udata, ucmd.rbuf_addr,
 							ucmd.rbuf_size, 0, 0);
 				if (IS_ERR(qp->rumem)) {
 					ret = PTR_ERR(qp->rumem);
@@ -275,8 +274,7 @@ struct ib_qp *pvrdma_create_qp(struct ib_pd *pd,
 				qp->srq = to_vsrq(init_attr->srq);
 			}
 
-			qp->sumem = ib_umem_get(pd->uobject->context,
-						ucmd.sbuf_addr,
+			qp->sumem = ib_umem_get(udata, ucmd.sbuf_addr,
 						ucmd.sbuf_size, 0, 0);
 			if (IS_ERR(qp->sumem)) {
 				if (!is_srq)

drivers/infiniband/hw/vmw_pvrdma/pvrdma_srq.c

@@ -153,9 +153,7 @@ struct ib_srq *pvrdma_create_srq(struct ib_pd *pd,
 		goto err_srq;
 	}
 
-	srq->umem = ib_umem_get(pd->uobject->context,
-				ucmd.buf_addr,
-				ucmd.buf_size, 0, 0);
+	srq->umem = ib_umem_get(udata, ucmd.buf_addr, ucmd.buf_size, 0, 0);
 	if (IS_ERR(srq->umem)) {
 		ret = PTR_ERR(srq->umem);
 		goto err_srq;