RDS: Drop stale iWARP RDMA transport

RDS iWarp support code has become stale and non testable. As
indicated earlier, am dropping the support for it.

If new iWarp user(s) shows up in future, we can adapat the RDS IB
transprt for the special RDMA READ sink case. iWarp needs an MR
for the RDMA READ sink.

Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rds/rdma_transport.c b/net/rds/rdma_transport.c
index 9c1fed8..4f4b3d8 100644
--- a/net/rds/rdma_transport.c
+++ b/net/rds/rdma_transport.c
@@ -49,9 +49,7 @@
 	rdsdebug("conn %p id %p handling event %u (%s)\n", conn, cm_id,
 		 event->event, rdma_event_msg(event->event));
 
-	if (cm_id->device->node_type == RDMA_NODE_RNIC)
-		trans = &rds_iw_transport;
-	else
+	if (cm_id->device->node_type == RDMA_NODE_IB_CA)
 		trans = &rds_ib_transport;
 
 	/* Prevent shutdown from tearing down the connection
@@ -200,10 +198,6 @@
 	if (ret)
 		goto out;
 
-	ret = rds_iw_init();
-	if (ret)
-		goto err_iw_init;
-
 	ret = rds_ib_init();
 	if (ret)
 		goto err_ib_init;
@@ -211,8 +205,6 @@
 	goto out;
 
 err_ib_init:
-	rds_iw_exit();
-err_iw_init:
 	rds_rdma_listen_stop();
 out:
 	return ret;
@@ -224,11 +216,10 @@
 	/* stop listening first to ensure no new connections are attempted */
 	rds_rdma_listen_stop();
 	rds_ib_exit();
-	rds_iw_exit();
 }
 module_exit(rds_rdma_exit);
 
 MODULE_AUTHOR("Oracle Corporation <rds-devel@oss.oracle.com>");
-MODULE_DESCRIPTION("RDS: IB/iWARP transport");
+MODULE_DESCRIPTION("RDS: IB transport");
 MODULE_LICENSE("Dual BSD/GPL");