xprtrdma: Refactor frwr_init_mr()

Clean up: prepare for combining the rpcrdma_ia and rpcrdma_ep
structures. Take the opportunity to rename the function to be
consistent with the "subsystem _ object _ verb" naming scheme.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

net/sunrpc/xprtrdma/frwr_ops.c

@@ -52,7 +52,7 @@
 
 /**
  * frwr_release_mr - Destroy one MR
- * @mr: MR allocated by frwr_init_mr
+ * @mr: MR allocated by frwr_mr_init
  *
  */
 void frwr_release_mr(struct rpcrdma_mr *mr)
@@ -106,15 +106,16 @@ void frwr_reset(struct rpcrdma_req *req)
 }
 
 /**
- * frwr_init_mr - Initialize one MR
- * @ia: interface adapter
+ * frwr_mr_init - Initialize one MR
+ * @r_xprt: controlling transport instance
  * @mr: generic MR to prepare for FRWR
  *
  * Returns zero if successful. Otherwise a negative errno
  * is returned.
  */
-int frwr_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr)
+int frwr_mr_init(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr *mr)
 {
+	struct rpcrdma_ia *ia = &r_xprt->rx_ia;
 	unsigned int depth = ia->ri_max_frwr_depth;
 	struct scatterlist *sg;
 	struct ib_mr *frmr;
@@ -128,6 +129,7 @@ int frwr_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr)
 	if (!sg)
 		goto out_list_err;
 
+	mr->mr_xprt = r_xprt;
 	mr->frwr.fr_mr = frmr;
 	mr->mr_dir = DMA_NONE;
 	INIT_LIST_HEAD(&mr->mr_list);

net/sunrpc/xprtrdma/verbs.c

@@ -896,14 +896,12 @@ rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt)
 		if (!mr)
 			break;
 
-		rc = frwr_init_mr(ia, mr);
+		rc = frwr_mr_init(r_xprt, mr);
 		if (rc) {
 			kfree(mr);
 			break;
 		}
 
-		mr->mr_xprt = r_xprt;
-
 		spin_lock(&buf->rb_lock);
 		rpcrdma_mr_push(mr, &buf->rb_mrs);
 		list_add(&mr->mr_all, &buf->rb_all_mrs);

net/sunrpc/xprtrdma/xprt_rdma.h

@@ -536,7 +536,7 @@ rpcrdma_data_dir(bool writing)
 void frwr_reset(struct rpcrdma_req *req);
 int frwr_query_device(struct rpcrdma_xprt *r_xprt,
 		      const struct ib_device *device);
-int frwr_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr);
+int frwr_mr_init(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr *mr);
 void frwr_release_mr(struct rpcrdma_mr *mr);
 struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
 				struct rpcrdma_mr_seg *seg,