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authorEli Cohen <eli@mellanox.co.il>2010-09-27 17:51:10 -0700
committerRoland Dreier <rolandd@cisco.com>2010-09-27 17:51:10 -0700
commita3f5adaf491490089215f863a61b9422fae902f8 (patch)
treeab4bd1d3875a220cf752bd1a9fd233a1c14bd86e /drivers/infiniband/core
parent252a52aa4fa22a668f019e55b3aac3ff71ec1c29 (diff)
downloadop-kernel-dev-a3f5adaf491490089215f863a61b9422fae902f8.zip
op-kernel-dev-a3f5adaf491490089215f863a61b9422fae902f8.tar.gz
IB/core: Add link layer property to ports
This patch allows ports to have different link layers: IB_LINK_LAYER_INFINIBAND or IB_LINK_LAYER_ETHERNET. This is required for adding IBoE (InfiniBand-over-Ethernet, aka RoCE) support. For devices that do not provide an implementation for querying the link layer property of a port, we return a default value based on the transport: RMA_TRANSPORT_IB nodes will return IB_LINK_LAYER_INFINIBAND and RDMA_TRANSPORT_IWARP nodes will return IB_LINK_LAYER_ETHERNET. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/core')
-rw-r--r--drivers/infiniband/core/verbs.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index e0fa222..af7a8b0 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -94,6 +94,22 @@ rdma_node_get_transport(enum rdma_node_type node_type)
}
EXPORT_SYMBOL(rdma_node_get_transport);
+enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num)
+{
+ if (device->get_link_layer)
+ return device->get_link_layer(device, port_num);
+
+ switch (rdma_node_get_transport(device->node_type)) {
+ case RDMA_TRANSPORT_IB:
+ return IB_LINK_LAYER_INFINIBAND;
+ case RDMA_TRANSPORT_IWARP:
+ return IB_LINK_LAYER_ETHERNET;
+ default:
+ return IB_LINK_LAYER_UNSPECIFIED;
+ }
+}
+EXPORT_SYMBOL(rdma_port_get_link_layer);
+
/* Protection domains */
struct ib_pd *ib_alloc_pd(struct ib_device *device)
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