diff mbox series

[3/3] RDMA/rxe: Make rping work with tun device

Message ID 20250119172831.3123110-4-yanjun.zhu@linux.dev (mailing list archive)
State New
Headers show
Series Add the support of tun to RXE | expand

Commit Message

Zhu Yanjun Jan. 19, 2025, 5:28 p.m. UTC 
Because the type of tun device is ARPHRD_NONE, in cma, ARPHRD_NONE is
not recognized. To RXE device, just as SIW does, ARPHRD_NONE is added
to support.

Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
---
 drivers/infiniband/core/cma.c | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 91db10515d74..fedcdb56fb6b 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -739,12 +739,26 @@  cma_validate_port(struct ib_device *device, u32 port,
 		goto out;
 	}
 
-	if (dev_type == ARPHRD_ETHER && rdma_protocol_roce(device, port)) {
-		ndev = dev_get_by_index(dev_addr->net, bound_if_index);
-		if (!ndev)
-			goto out;
+	/*
+	 * For a RXE device, it should work with TUN device and normal ethernet
+	 * devices. Use driver_id to check if a device is a RXE device or not.
+	 * ARPHDR_NONE means a TUN device.
+	 */
+	if (device->ops.driver_id == RDMA_DRIVER_RXE) {
+		if ((dev_type == ARPHRD_NONE || dev_type == ARPHRD_ETHER)
+			&& rdma_protocol_roce(device, port)) {
+			ndev = dev_get_by_index(dev_addr->net, bound_if_index);
+			if (!ndev)
+				goto out;
+		}
 	} else {
-		gid_type = IB_GID_TYPE_IB;
+		if (dev_type == ARPHRD_ETHER && rdma_protocol_roce(device, port)) {
+			ndev = dev_get_by_index(dev_addr->net, bound_if_index);
+			if (!ndev)
+				goto out;
+		} else {
+			gid_type = IB_GID_TYPE_IB;
+		}
 	}
 
 	sgid_attr = rdma_find_gid_by_port(device, gid, gid_type, port, ndev);