i40iw: Add notifier for network device events

Register a netdevice notifier for netdev UP/DOWN
notification events and report the appropriate ib event.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/i40iw/i40iw.h b/drivers/infiniband/hw/i40iw/i40iw.h
index 4ae9131..bcddd70 100644 (file)
--- a/drivers/infiniband/hw/i40iw/i40iw.h
+++ b/drivers/infiniband/hw/i40iw/i40iw.h
@@ -587,5 +587,8 @@ int i40iw_inet6addr_event(struct notifier_block *notifier,
 int i40iw_net_event(struct notifier_block *notifier,
                    unsigned long event,
                    void *ptr);
+int i40iw_netdevice_event(struct notifier_block *notifier,
+                         unsigned long event,
+                         void *ptr);
 
 #endif

diff --git a/drivers/infiniband/hw/i40iw/i40iw_main.c b/drivers/infiniband/hw/i40iw/i40iw_main.c
index 3aecf4c..a4a8458 100644 (file)
--- a/drivers/infiniband/hw/i40iw/i40iw_main.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_main.c
@@ -99,6 +99,10 @@ static struct notifier_block i40iw_net_notifier = {
        .notifier_call = i40iw_net_event
 };
 
+static struct notifier_block i40iw_netdevice_notifier = {
+       .notifier_call = i40iw_netdevice_event
+};
+
 /**
  * i40iw_find_i40e_handler - find a handler given a client info
  * @ldev: pointer to a client info
@@ -1394,6 +1398,7 @@ static void i40iw_register_notifiers(void)
        register_inetaddr_notifier(&i40iw_inetaddr_notifier);
        register_inet6addr_notifier(&i40iw_inetaddr6_notifier);
        register_netevent_notifier(&i40iw_net_notifier);
+       register_netdevice_notifier(&i40iw_netdevice_notifier);
 }
 
 /**
@@ -1405,6 +1410,7 @@ static void i40iw_unregister_notifiers(void)
        unregister_netevent_notifier(&i40iw_net_notifier);
        unregister_inetaddr_notifier(&i40iw_inetaddr_notifier);
        unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier);
+       unregister_netdevice_notifier(&i40iw_netdevice_notifier);
 }
 
 /**

diff --git a/drivers/infiniband/hw/i40iw/i40iw_utils.c b/drivers/infiniband/hw/i40iw/i40iw_utils.c
index 8845dba..ddc1056 100644 (file)
--- a/drivers/infiniband/hw/i40iw/i40iw_utils.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_utils.c
@@ -137,7 +137,7 @@ inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg)
 }
 
 /**
- * i40iw_inetaddr_event - system notifier for netdev events
+ * i40iw_inetaddr_event - system notifier for ipv4 addr events
  * @notfier: not used
  * @event: event for notifier
  * @ptr: if address
@@ -200,7 +200,7 @@ int i40iw_inetaddr_event(struct notifier_block *notifier,
 }
 
 /**
- * i40iw_inet6addr_event - system notifier for ipv6 netdev events
+ * i40iw_inet6addr_event - system notifier for ipv6 addr events
  * @notfier: not used
  * @event: event for notifier
  * @ptr: if address
@@ -252,7 +252,7 @@ int i40iw_inet6addr_event(struct notifier_block *notifier,
 }
 
 /**
- * i40iw_net_event - system notifier for net events
+ * i40iw_net_event - system notifier for netevents
  * @notfier: not used
  * @event: event for notifier
  * @ptr: neighbor
@@ -297,6 +297,50 @@ int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *
 }
 
 /**
+ * i40iw_netdevice_event - system notifier for netdev events
+ * @notfier: not used
+ * @event: event for notifier
+ * @ptr: netdev
+ */
+int i40iw_netdevice_event(struct notifier_block *notifier,
+                         unsigned long event,
+                         void *ptr)
+{
+       struct net_device *event_netdev;
+       struct net_device *netdev;
+       struct i40iw_device *iwdev;
+       struct i40iw_handler *hdl;
+
+       event_netdev = netdev_notifier_info_to_dev(ptr);
+
+       hdl = i40iw_find_netdev(event_netdev);
+       if (!hdl)
+               return NOTIFY_DONE;
+
+       iwdev = &hdl->device;
+       if (iwdev->init_state < RDMA_DEV_REGISTERED || iwdev->closing)
+               return NOTIFY_DONE;
+
+       netdev = iwdev->ldev->netdev;
+       if (netdev != event_netdev)
+               return NOTIFY_DONE;
+
+       iwdev->iw_status = 1;
+
+       switch (event) {
+       case NETDEV_DOWN:
+               iwdev->iw_status = 0;
+               /* Fall through */
+       case NETDEV_UP:
+               i40iw_port_ibevent(iwdev);
+               break;
+       default:
+               break;
+       }
+       return NOTIFY_DONE;
+}
+
+/**
  * i40iw_get_cqp_request - get cqp struct
  * @cqp: device cqp ptr
  * @wait: cqp to be used in wait mode