unsigned total;
unsigned dropped;
unsigned time_squeeze;
- unsigned throttled;
unsigned cpu_collision;
};
};
#define NETDEV_BOOT_SETUP_MAX 8
+extern int __init netdev_boot_setup(char *str);
/*
* The DEVICE structure.
* the interface.
*/
char name[IFNAMSIZ];
+ /* device name hash chain */
+ struct hlist_node name_hlist;
/*
* I/O specific fields
/* ------- Fields preinitialized in Space.c finish here ------- */
+ /* Net device features */
+ unsigned long features;
+#define NETIF_F_SG 1 /* Scatter/gather IO. */
+#define NETIF_F_IP_CSUM 2 /* Can checksum only TCP/UDP over IPv4. */
+#define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
+#define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
+#define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
+#define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
+#define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
+#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
+#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
+#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
+#define NETIF_F_TSO 2048 /* Can offload TCP/IP segmentation */
+#define NETIF_F_LLTX 4096 /* LockLess TX */
+#define NETIF_F_UFO 8192 /* Can offload UDP Large Send*/
+
struct net_device *next_sched;
/* Interface index. Unique device identifier */
* will (read: may be cleaned up at will).
*/
- /* These may be needed for future network-power-down code. */
- unsigned long trans_start; /* Time (in jiffies) of last Tx */
- unsigned long last_rx; /* Time of last Rx */
unsigned short flags; /* interface flags (a la BSD) */
unsigned short gflags;
unsigned mtu; /* interface MTU value */
unsigned short type; /* interface hardware type */
unsigned short hard_header_len; /* hardware hdr length */
- void *priv; /* pointer to private data */
struct net_device *master; /* Pointer to master device of a group,
* which this device is member of.
*/
/* Interface address info. */
- unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
- unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address */
+ unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
unsigned char addr_len; /* hardware address length */
unsigned short dev_id; /* for shared network cards */
int promiscuity;
int allmulti;
- int watchdog_timeo;
- struct timer_list watchdog_timer;
/* Protocol specific pointers */
void *ec_ptr; /* Econet specific data */
void *ax25_ptr; /* AX.25 specific data */
- struct list_head poll_list; /* Link to poll list */
+/*
+ * Cache line mostly used on receive path (including eth_type_trans())
+ */
+ struct list_head poll_list ____cacheline_aligned_in_smp;
+ /* Link to poll list */
+
+ int (*poll) (struct net_device *dev, int *quota);
int quota;
int weight;
+ unsigned long last_rx; /* Time of last Rx */
+ /* Interface address info used in eth_type_trans() */
+ unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast
+ because most packets are unicast) */
+ unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
+
+/*
+ * Cache line mostly used on queue transmit path (qdisc)
+ */
+ /* device queue lock */
+ spinlock_t queue_lock ____cacheline_aligned_in_smp;
struct Qdisc *qdisc;
struct Qdisc *qdisc_sleeping;
- struct Qdisc *qdisc_ingress;
struct list_head qdisc_list;
unsigned long tx_queue_len; /* Max frames per queue allowed */
/* ingress path synchronizer */
spinlock_t ingress_lock;
+ struct Qdisc *qdisc_ingress;
+
+/*
+ * One part is mostly used on xmit path (device)
+ */
/* hard_start_xmit synchronizer */
- spinlock_t xmit_lock;
+ spinlock_t xmit_lock ____cacheline_aligned_in_smp;
/* cpu id of processor entered to hard_start_xmit or -1,
if nobody entered there.
*/
int xmit_lock_owner;
- /* device queue lock */
- spinlock_t queue_lock;
+ void *priv; /* pointer to private data */
+ int (*hard_start_xmit) (struct sk_buff *skb,
+ struct net_device *dev);
+ /* These may be needed for future network-power-down code. */
+ unsigned long trans_start; /* Time (in jiffies) of last Tx */
+
+ int watchdog_timeo; /* used by dev_watchdog() */
+ struct timer_list watchdog_timer;
+
+/*
+ * refcnt is a very hot point, so align it on SMP
+ */
/* Number of references to this device */
- atomic_t refcnt;
+ atomic_t refcnt ____cacheline_aligned_in_smp;
+
/* delayed register/unregister */
struct list_head todo_list;
- /* device name hash chain */
- struct hlist_node name_hlist;
/* device index hash chain */
struct hlist_node index_hlist;
NETREG_RELEASED, /* called free_netdev */
} reg_state;
- /* Net device features */
- unsigned long features;
-#define NETIF_F_SG 1 /* Scatter/gather IO. */
-#define NETIF_F_IP_CSUM 2 /* Can checksum only TCP/UDP over IPv4. */
-#define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
-#define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
-#define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
-#define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
-#define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
-#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
-#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
-#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
-#define NETIF_F_TSO 2048 /* Can offload TCP/IP segmentation */
-#define NETIF_F_LLTX 4096 /* LockLess TX */
-
/* Called after device is detached from network. */
void (*uninit)(struct net_device *dev);
/* Called after last user reference disappears. */
/* Pointers to interface service routines. */
int (*open)(struct net_device *dev);
int (*stop)(struct net_device *dev);
- int (*hard_start_xmit) (struct sk_buff *skb,
- struct net_device *dev);
#define HAVE_NETDEV_POLL
- int (*poll) (struct net_device *dev, int *quota);
int (*hard_header) (struct sk_buff *skb,
struct net_device *dev,
unsigned short type,
#define SET_NETDEV_DEV(net, pdev) ((net)->class_dev.dev = (pdev))
struct packet_type {
- __be16 type; /* This is really htons(ether_type). */
- struct net_device *dev; /* NULL is wildcarded here */
- int (*func) (struct sk_buff *, struct net_device *,
- struct packet_type *);
+ __be16 type; /* This is really htons(ether_type). */
+ struct net_device *dev; /* NULL is wildcarded here */
+ int (*func) (struct sk_buff *,
+ struct net_device *,
+ struct packet_type *,
+ struct net_device *);
void *af_packet_priv;
struct list_head list;
};
struct softnet_data
{
- int throttle;
+ struct net_device *output_queue;
struct sk_buff_head input_pkt_queue;
struct list_head poll_list;
- struct net_device *output_queue;
struct sk_buff *completion_queue;
struct net_device backlog_dev; /* Sorry. 8) */
extern int netif_rx_ni(struct sk_buff *skb);
#define HAVE_NETIF_RECEIVE_SKB 1
extern int netif_receive_skb(struct sk_buff *skb);
+extern int dev_valid_name(const char *name);
extern int dev_ioctl(unsigned int cmd, void __user *);
extern int dev_ethtool(struct ifreq *);
extern unsigned dev_get_flags(const struct net_device *);
extern void dev_init(void);
extern int netdev_nit;
+extern int netdev_budget;
/* Called by rtnetlink.c:rtnl_unlock() */
extern void netdev_run_todo(void);
extern void __netdev_watchdog_up(struct net_device *dev);
-static inline void netif_carrier_on(struct net_device *dev)
-{
- if (test_and_clear_bit(__LINK_STATE_NOCARRIER, &dev->state))
- linkwatch_fire_event(dev);
- if (netif_running(dev))
- __netdev_watchdog_up(dev);
-}
+extern void netif_carrier_on(struct net_device *dev);
-static inline void netif_carrier_off(struct net_device *dev)
-{
- if (!test_and_set_bit(__LINK_STATE_NOCARRIER, &dev->state))
- linkwatch_fire_event(dev);
-}
+extern void netif_carrier_off(struct net_device *dev);
/* Hot-plugging. */
static inline int netif_device_present(struct net_device *dev)
return (1 << debug_value) - 1;
}
-/* Schedule rx intr now? */
+/* Test if receive needs to be scheduled */
+static inline int __netif_rx_schedule_prep(struct net_device *dev)
+{
+ return !test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state);
+}
+/* Test if receive needs to be scheduled but only if up */
static inline int netif_rx_schedule_prep(struct net_device *dev)
{
- return netif_running(dev) &&
- !test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state);
+ return netif_running(dev) && __netif_rx_schedule_prep(dev);
}
/* Add interface to tail of rx poll list. This assumes that _prep has
static inline void netif_poll_disable(struct net_device *dev)
{
- while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state)) {
+ while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state))
/* No hurry. */
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(1);
- }
+ schedule_timeout_interruptible(1);
}
static inline void netif_poll_enable(struct net_device *dev)
extern int weight_p;
extern int netdev_set_master(struct net_device *dev, struct net_device *master);
extern int skb_checksum_help(struct sk_buff *skb, int inward);
+#ifdef CONFIG_BUG
+extern void netdev_rx_csum_fault(struct net_device *dev);
+#else
+static inline void netdev_rx_csum_fault(struct net_device *dev)
+{
+}
+#endif
/* rx skb timestamps */
extern void net_enable_timestamp(void);
extern void net_disable_timestamp(void);
+#ifdef CONFIG_PROC_FS
+extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
+extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
+extern void dev_seq_stop(struct seq_file *seq, void *v);
+#endif
+
+extern void linkwatch_run_queue(void);
+
#endif /* __KERNEL__ */
#endif /* _LINUX_DEV_H */
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