IPoIB: Set dev_id field of net_device

Use the net device's dev_id field to encode the port number of the pci
device.  This can be used to to associate a net device with the pci
device's port. The encoding is: dev_id = port - 1.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index b4b22576f12a..30d23334f967 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1240,6 +1240,7 @@ static struct net_device *ipoib_add_port(const char *format,
                 goto alloc_mem_failed;
 
         SET_NETDEV_DEV(priv->dev, hca->dma_device);
+        priv->dev->dev_id = port - 1;
 
         if (!ib_query_port(hca, port, &attr))
                 priv->max_ib_mtu = ib_mtu_enum_to_int(attr.max_mtu);