diff options
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 51 |
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); } |