RDMA/cxgb3: Report correct port state and MTU

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index 160ef48..e2a6321 100644 (file)
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -40,6 +40,7 @@
 #include <linux/spinlock.h>
 #include <linux/ethtool.h>
 #include <linux/rtnetlink.h>
+#include <linux/inetdevice.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -1152,12 +1153,39 @@ static int iwch_query_device(struct ib_device *ibdev,
 static int iwch_query_port(struct ib_device *ibdev,
                           u8 port, struct ib_port_attr *props)
 {
+       struct iwch_dev *dev;
+       struct net_device *netdev;
+       struct in_device *inetdev;
+
        PDBG("%s ibdev %p\n", __func__, ibdev);
 
+       dev = to_iwch_dev(ibdev);
+       netdev = dev->rdev.port_info.lldevs[port-1];
+
        memset(props, 0, sizeof(struct ib_port_attr));
        props->max_mtu = IB_MTU_4096;
-       props->active_mtu = IB_MTU_2048;
-       props->state = IB_PORT_ACTIVE;
+       if (netdev->mtu >= 4096)
+               props->active_mtu = IB_MTU_4096;
+       else if (netdev->mtu >= 2048)
+               props->active_mtu = IB_MTU_2048;
+       else if (netdev->mtu >= 1024)
+               props->active_mtu = IB_MTU_1024;
+       else if (netdev->mtu >= 512)
+               props->active_mtu = IB_MTU_512;
+       else
+               props->active_mtu = IB_MTU_256;
+
+       if (!netif_carrier_ok(netdev))
+               props->state = IB_PORT_DOWN;
+       else {
+               inetdev = in_dev_get(netdev);
+               if (inetdev->ifa_list)
+                       props->state = IB_PORT_ACTIVE;
+               else
+                       props->state = IB_PORT_INIT;
+               in_dev_put(inetdev);
+       }
+
        props->port_cap_flags =
            IB_PORT_CM_SUP |
            IB_PORT_SNMP_TUNNEL_SUP |