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IB/core: Fix query port failure in RoCE

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Currently ib_query_port always attempts to to read the subnet prefix by
calling ib_query_gid(). For RoCE/iWARP there is no subnet manager and no
subnet prefix. Fix this by querying GID[0] only for IB networks.

Fixes: fad61ad4e7 ('IB/core: Add subnet prefix to port info')
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Eli Cohen 2016-06-04 15:15:18 +03:00 committed by Doug Ledford
parent 495fbae6e2
commit d7012467a9
1 changed files with 3 additions and 0 deletions
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3
drivers/infiniband/core/device.c
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@ -661,6 +661,9 @@ int ib_query_port(struct ib_device *device,
if (err || port_attr->subnet_prefix)
return err;
if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND)
return 0;
err = ib_query_gid(device, port_num, 0, &gid, NULL);
if (err)
return err;