1 files changed, 32 insertions, 19 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index d4a4d9867794..65ee1929b2b1 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -72,10 +72,6 @@ struct wireless_dev;
 /* Backlog congestion levels */
 #define NET_RX_SUCCESS          0   /* keep 'em coming, baby */
 #define NET_RX_DROP             1  /* packet dropped */
-#define NET_RX_CN_LOW           2   /* storm alert, just in case */
-#define NET_RX_CN_MOD           3   /* Storm on its way! */
-#define NET_RX_CN_HIGH          4   /* The storm is here */
-#define NET_RX_BAD              5  /* packet dropped due to kernel error */
 
 /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
  * indicates that the device will soon be dropping packets, or already drops
@@ -83,17 +79,19 @@ struct wireless_dev;
 #define net_xmit_eval(e)        ((e) == NET_XMIT_CN? 0 : (e))
 #define net_xmit_errno(e)       ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
 
+/* Driver transmit return codes */
+enum netdev_tx {
+        NETDEV_TX_OK = 0,       /* driver took care of packet */
+        NETDEV_TX_BUSY,         /* driver tx path was busy*/
+        NETDEV_TX_LOCKED = -1,  /* driver tx lock was already taken */
+};
+typedef enum netdev_tx netdev_tx_t;
+
 #endif
 
 #define MAX_ADDR_LEN    32              /* Largest hardware address length */
 
-/* Driver transmit return codes */
-#define NETDEV_TX_OK 0          /* driver took care of packet */
-#define NETDEV_TX_BUSY 1        /* driver tx path was busy*/
-#define NETDEV_TX_LOCKED -1     /* driver tx lock was already taken */
-
 #ifdef  __KERNEL__
-
 /*
  *      Compute the worst case header length according to the protocols
  *      used.
@@ -511,9 +509,11 @@ struct netdev_queue {
  *     This function is called when network device transistions to the down
  *     state.
  *
- * int (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev);
+ * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
+ *                               struct net_device *dev);
  *      Called when a packet needs to be transmitted.
- *      Must return NETDEV_TX_OK , NETDEV_TX_BUSY, or NETDEV_TX_LOCKED,
+ *      Must return NETDEV_TX_OK , NETDEV_TX_BUSY.
+ *        (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)
  *      Required can not be NULL.
  *
  * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
@@ -584,7 +584,7 @@ struct net_device_ops {
         void                    (*ndo_uninit)(struct net_device *dev);
         int                     (*ndo_open)(struct net_device *dev);
         int                     (*ndo_stop)(struct net_device *dev);
-        int                     (*ndo_start_xmit) (struct sk_buff *skb,
+        netdev_tx_t             (*ndo_start_xmit) (struct sk_buff *skb,
                                                    struct net_device *dev);
         u16                     (*ndo_select_queue)(struct net_device *dev,
                                                     struct sk_buff *skb);
@@ -627,6 +627,8 @@ struct net_device_ops {
         void                    (*ndo_poll_controller)(struct net_device *dev);
 #endif
 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
+        int                     (*ndo_fcoe_enable)(struct net_device *dev);
+        int                     (*ndo_fcoe_disable)(struct net_device *dev);
         int                     (*ndo_fcoe_ddp_setup)(struct net_device *dev,
                                                       u16 xid,
                                                       struct scatterlist *sgl,
@@ -705,6 +707,7 @@ struct net_device
 /* the GSO_MASK reserves bits 16 through 23 */
 #define NETIF_F_FCOE_CRC        (1 << 24) /* FCoE CRC32 */
 #define NETIF_F_SCTP_CSUM       (1 << 25) /* SCTP checksum offload */
+#define NETIF_F_FCOE_MTU        (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
 
         /* Segmentation offload features */
 #define NETIF_F_GSO_SHIFT       16
@@ -829,6 +832,9 @@ struct net_device
         /* Number of TX queues currently active in device  */
         unsigned int            real_num_tx_queues;
 
+        /* root qdisc from userspace point of view */
+        struct Qdisc            *qdisc;
+
         unsigned long           tx_queue_len;   /* Max frames per queue allowed */
         spinlock_t              tx_global_lock;
 /*
@@ -992,6 +998,12 @@ static inline void *netdev_priv(const struct net_device *dev)
  */
 #define SET_NETDEV_DEV(net, pdev)       ((net)->dev.parent = (pdev))
 
+/* Set the sysfs device type for the network logical device to allow
+ * fin grained indentification of different network device types. For
+ * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc.
+ */
+#define SET_NETDEV_DEVTYPE(net, devtype)        ((net)->dev.type = (devtype))
+
 /**
  *      netif_napi_add - initialize a napi context
  *      @dev:  network device
@@ -1260,7 +1272,7 @@ static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue)
 {
 #ifdef CONFIG_NETPOLL_TRAP
         if (netpoll_trap()) {
-                clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
+                netif_tx_start_queue(dev_queue);
                 return;
         }
 #endif
@@ -1366,7 +1378,8 @@ static inline int netif_running(const struct net_device *dev)
 static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
 {
         struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
-        clear_bit(__QUEUE_STATE_XOFF, &txq->state);
+
+        netif_tx_start_queue(txq);
 }
 
 /**
@@ -1383,7 +1396,7 @@ static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
         if (netpoll_trap())
                 return;
 #endif
-        set_bit(__QUEUE_STATE_XOFF, &txq->state);
+        netif_tx_stop_queue(txq);
 }
 
 /**
@@ -1397,7 +1410,8 @@ static inline int __netif_subqueue_stopped(const struct net_device *dev,
                                          u16 queue_index)
 {
         struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
-        return test_bit(__QUEUE_STATE_XOFF, &txq->state);
+
+        return netif_tx_queue_stopped(txq);
 }
 
 static inline int netif_subqueue_stopped(const struct net_device *dev,
@@ -1749,8 +1763,7 @@ static inline void netif_tx_unlock(struct net_device *dev)
                  * force a schedule.
                  */
                 clear_bit(__QUEUE_STATE_FROZEN, &txq->state);
-                if (!test_bit(__QUEUE_STATE_XOFF, &txq->state))
-                        __netif_schedule(txq->qdisc);
+                netif_schedule_queue(txq);
         }
         spin_unlock(&dev->tx_global_lock);
 }