[PATCH v4 13/27] IB/Verbs: Reserve legacy transport type in 'dev_addr'

[Michael Wang]

Reserve the legacy transport type for the 'transport' member
of 'struct rdma_dev_addr' until we make sure this is no
longer needed.

Cc: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
Cc: Tom Talpey <tom@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx>
Cc: Doug Ledford <dledford@xxxxxxxxxx>
Cc: Ira Weiny <ira.weiny@xxxxxxxxx>
Cc: Sean Hefty <sean.hefty@xxxxxxxxx>
Signed-off-by: Michael Wang <yun.wang@xxxxxxxxxxxxxxxx>
---
 drivers/infiniband/core/cma.c | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 377e2fb..b520882 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -244,14 +244,35 @@ static inline void cma_set_ip_ver(struct cma_hdr *hdr, u8 ip_ver)
 	hdr->ip_version = (ip_ver << 4) | (hdr->ip_version & 0xF);
 }
 
+static inline void cma_set_legacy_transport(struct rdma_cm_id *id)
+{
+	switch (id->device->node_type) {
+	case RDMA_NODE_IB_CA:
+	case RDMA_NODE_IB_SWITCH:
+	case RDMA_NODE_IB_ROUTER:
+		id->route.addr.dev_addr.transport = RDMA_TRANSPORT_IB;
+		break;
+	case RDMA_NODE_RNIC:
+		id->route.addr.dev_addr.transport = RDMA_TRANSPORT_IWARP;
+		break;
+	case RDMA_NODE_USNIC:
+		id->route.addr.dev_addr.transport = RDMA_TRANSPORT_USNIC;
+		break;
+	case RDMA_NODE_USNIC_UDP:
+		id->route.addr.dev_addr.transport = RDMA_TRANSPORT_USNIC_UDP;
+		break;
+	default:
+		BUG();
+	}
+}
+
 static void cma_attach_to_dev(struct rdma_id_private *id_priv,
 			      struct cma_device *cma_dev)
 {
 	atomic_inc(&cma_dev->refcount);
 	id_priv->cma_dev = cma_dev;
 	id_priv->id.device = cma_dev->device;
-	id_priv->id.route.addr.dev_addr.transport =
-		rdma_node_get_transport(cma_dev->device->node_type);
+	cma_set_legacy_transport(&id_priv->id);
 	list_add_tail(&id_priv->list, &cma_dev->id_list);
 }
 
-- 
2.1.0
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