[ofa-general] [PATCHv5 04/10] IB/umad: Enable support only for IB ports

[Eli Cohen]

Initialize umad context for devices that have any of their ports IB. Since
devices may have ports of two different protocols (for example,
RDMA_TRANSPORT_IB and RDMA_TRANSPORT_RDMAOE), ib_umad_add_one() needs to
succeed if any of the ports is IB but ib_umad_init_port() is called only for IB
ports.

Signed-off-by: Eli Cohen <eli at mellanox.co.il>
---

Changes from last version:
1. Patch title changed from to "Enable support for RDMAoE ports" to
"Enable support only for IB ports".
2. Do not allow userspace MADs to RDMAoE ports.


 drivers/infiniband/core/user_mad.c |   15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index aa4eeb3..51888eb 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -1123,10 +1123,6 @@ static void ib_umad_add_one(struct ib_device *device)
 		e = device->phys_port_cnt;
 	}
 
-	for (i = s; i <= e; ++i)
-		if (rdma_port_get_transport(device, i) != RDMA_TRANSPORT_IB)
-			return;
-
 	umad_dev = kzalloc(sizeof *umad_dev +
 			   (e - s + 1) * sizeof (struct ib_umad_port),
 			   GFP_KERNEL);
@@ -1141,8 +1137,9 @@ static void ib_umad_add_one(struct ib_device *device)
 	for (i = s; i <= e; ++i) {
 		umad_dev->port[i - s].umad_dev = umad_dev;
 
-		if (ib_umad_init_port(device, i, &umad_dev->port[i - s]))
-			goto err;
+		if (rdma_port_get_transport(device, i) == RDMA_TRANSPORT_IB)
+			if (ib_umad_init_port(device, i, &umad_dev->port[i - s]))
+				goto err;
 	}
 
 	ib_set_client_data(device, &umad_client, umad_dev);
@@ -1151,7 +1148,8 @@ static void ib_umad_add_one(struct ib_device *device)
 
 err:
 	while (--i >= s)
-		ib_umad_kill_port(&umad_dev->port[i - s]);
+		if (rdma_port_get_transport(device, i) == RDMA_TRANSPORT_IB)
+			ib_umad_kill_port(&umad_dev->port[i - s]);
 
 	kref_put(&umad_dev->ref, ib_umad_release_dev);
 }
@@ -1165,7 +1163,8 @@ static void ib_umad_remove_one(struct ib_device *device)
 		return;
 
 	for (i = 0; i <= umad_dev->end_port - umad_dev->start_port; ++i)
-		ib_umad_kill_port(&umad_dev->port[i]);
+		if (rdma_port_get_transport(device, i + 1) == RDMA_TRANSPORT_IB)
+			ib_umad_kill_port(&umad_dev->port[i]);
 
 	kref_put(&umad_dev->ref, ib_umad_release_dev);
 }
-- 
1.6.4