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/*

 * INET         An implementation of the TCP/IP protocol suite for the LINUX

 *              operating system.  INET is implemented using the  BSD Socket

 *              interface as the means of communication with the user level.

 *

 *              Definitions for the Interfaces handler.

 *

 * Version:     @(#)dev.h       1.0.10  08/12/93

 *

 * Authors:     Ross Biro

 *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>

 *              Corey Minyard <wf-rch!minyard@relay.EU.net>

 *              Donald J. Becker, <becker@cesdis.gsfc.nasa.gov>

 *              Alan Cox, <Alan.Cox@linux.org>

 *              Bjorn Ekwall. <bj0rn@blox.se>

 *              Pekka Riikonen <priikone@poseidon.pspt.fi>

 *

 *              This program is free software; you can redistribute it and/or

 *              modify it under the terms of the GNU General Public License

 *              as published by the Free Software Foundation; either version

 *              2 of the License, or (at your option) any later version.

 *

 *              Moved to /usr/include/linux for NET3

 */

#ifndef _LINUX_NETDEVICE_H

#define _LINUX_NETDEVICE_H

#include <linux/if.h>

#include <linux/if_ether.h>

#include <linux/if_packet.h>

#ifdef __KERNEL__

#include <linux/timer.h>

#include <linux/delay.h>

#include <asm/atomic.h>

#include <asm/cache.h>

#include <asm/byteorder.h>

#include <linux/device.h>

#include <linux/percpu.h>

#include <linux/dmaengine.h>

#include <linux/workqueue.h>

#include <net/net_namespace.h>

struct vlan_group;

struct ethtool_ops;

struct netpoll_info;

/* 802.11 specific */

struct wireless_dev;

                                        /* source back-compat hooks */

#define SET_ETHTOOL_OPS(netdev,ops) \

        ( (netdev)->ethtool_ops = (ops) )

#define HAVE_ALLOC_NETDEV               /* feature macro: alloc_xxxdev

                                           functions are available. */

#define HAVE_FREE_NETDEV                /* free_netdev() */

#define HAVE_NETDEV_PRIV                /* netdev_priv() */

#define NET_XMIT_SUCCESS        0

#define NET_XMIT_DROP           1       /* skb dropped                  */

#define NET_XMIT_CN             2       /* congestion notification      */

#define NET_XMIT_POLICED        3       /* skb is shot by police        */

#define NET_XMIT_BYPASS         4       /* packet does not leave via dequeue;

                                           (TC use only - dev_queue_xmit

                                           returns this as NET_XMIT_SUCCESS) */

/* 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

 * some packets of the same priority; prompting us to send less aggressively. */

#define net_xmit_eval(e)        ((e) == NET_XMIT_CN? 0 : (e))

#define net_xmit_errno(e)       ((e) != NET_XMIT_CN ? -ENOBUFS : 0)

#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 */

/*

 *      Compute the worst case header length according to the protocols

 *      used.

 */

#if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR)

#define LL_MAX_HEADER   32

#else

#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)

#define LL_MAX_HEADER   96

#else

#define LL_MAX_HEADER   48

#endif

#endif

#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \

    !defined(CONFIG_NET_IPGRE) &&  !defined(CONFIG_NET_IPGRE_MODULE) && \

    !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \

    !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)

#define MAX_HEADER LL_MAX_HEADER

#else

#define MAX_HEADER (LL_MAX_HEADER + 48)

#endif

struct net_device_subqueue

{

        /* Give a control state for each queue.  This struct may contain

         * per-queue locks in the future.

         */

        unsigned long   state;

};

/*

 *      Network device statistics. Akin to the 2.0 ether stats but

 *      with byte counters.

 */

struct net_device_stats

{

        unsigned long   rx_packets;             /* total packets received       */

        unsigned long   tx_packets;             /* total packets transmitted    */

        unsigned long   rx_bytes;               /* total bytes received         */

        unsigned long   tx_bytes;               /* total bytes transmitted      */

        unsigned long   rx_errors;              /* bad packets received         */

        unsigned long   tx_errors;              /* packet transmit problems     */

        unsigned long   rx_dropped;             /* no space in linux buffers    */

        unsigned long   tx_dropped;             /* no space available in linux  */

        unsigned long   multicast;              /* multicast packets received   */

        unsigned long   collisions;

        /* detailed rx_errors: */

        unsigned long   rx_length_errors;

        unsigned long   rx_over_errors;         /* receiver ring buff overflow  */

        unsigned long   rx_crc_errors;          /* recved pkt with crc error    */

        unsigned long   rx_frame_errors;        /* recv'd frame alignment error */

        unsigned long   rx_fifo_errors;         /* recv'r fifo overrun          */

        unsigned long   rx_missed_errors;       /* receiver missed packet       */

        /* detailed tx_errors */

        unsigned long   tx_aborted_errors;

        unsigned long   tx_carrier_errors;

        unsigned long   tx_fifo_errors;

        unsigned long   tx_heartbeat_errors;

        unsigned long   tx_window_errors;

        /* for cslip etc */

        unsigned long   rx_compressed;

        unsigned long   tx_compressed;

};

/* Media selection options. */

enum {

        IF_PORT_UNKNOWN = 0,

        IF_PORT_10BASE2,

        IF_PORT_10BASET,

        IF_PORT_AUI,

        IF_PORT_100BASET,

        IF_PORT_100BASETX,

        IF_PORT_100BASEFX

};

#ifdef __KERNEL__

#include <linux/cache.h>

#include <linux/skbuff.h>

struct neighbour;

struct neigh_parms;

struct sk_buff;

struct netif_rx_stats

{

        unsigned total;

        unsigned dropped;

        unsigned time_squeeze;

        unsigned cpu_collision;

};

DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);

struct dev_addr_list

{

        struct dev_addr_list    *next;

        u8                      da_addr[MAX_ADDR_LEN];

        u8                      da_addrlen;

        u8                      da_synced;

        int                     da_users;

        int                     da_gusers;

};

/*

 *      We tag multicasts with these structures.

 */

#define dev_mc_list     dev_addr_list

#define dmi_addr        da_addr

#define dmi_addrlen     da_addrlen

#define dmi_users       da_users

#define dmi_gusers      da_gusers

struct hh_cache

{

        struct hh_cache *hh_next;       /* Next entry                        */

        atomic_t        hh_refcnt;      /* number of users                   */

/*

 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate

 * cache line on SMP.

 * They are mostly read, but hh_refcnt may be changed quite frequently,

 * incurring cache line ping pongs.

 */

        __be16          hh_type ____cacheline_aligned_in_smp;

                                        /* protocol identifier, f.e ETH_P_IP

                                         *  NOTE:  For VLANs, this will be the

                                         *  encapuslated type. --BLG

                                         */

        u16             hh_len;         /* length of header */

        int             (*hh_output)(struct sk_buff *skb);

        seqlock_t       hh_lock;

        /* cached hardware header; allow for machine alignment needs.        */

#define HH_DATA_MOD     16

#define HH_DATA_OFF(__len) \

        (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))

#define HH_DATA_ALIGN(__len) \

        (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))

        unsigned long   hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];

};

/* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.

 * Alternative is:

 *   dev->hard_header_len ? (dev->hard_header_len +

 *                           (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0

 *

 * We could use other alignment values, but we must maintain the

 * relationship HH alignment <= LL alignment.

 */

#define LL_RESERVED_SPACE(dev) \

        (((dev)->hard_header_len&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)

#define LL_RESERVED_SPACE_EXTRA(dev,extra) \

        ((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)

struct header_ops {

        int     (*create) (struct sk_buff *skb, struct net_device *dev,

                           unsigned short type, const void *daddr,

                           const void *saddr, unsigned len);

        int     (*parse)(const struct sk_buff *skb, unsigned char *haddr);

        int     (*rebuild)(struct sk_buff *skb);

#define HAVE_HEADER_CACHE

        int     (*cache)(const struct neighbour *neigh, struct hh_cache *hh);

        void    (*cache_update)(struct hh_cache *hh,

                                const struct net_device *dev,

                                const unsigned char *haddr);

};

/* These flag bits are private to the generic network queueing

 * layer, they may not be explicitly referenced by any other

 * code.

 */

enum netdev_state_t

{

        __LINK_STATE_XOFF=0,

        __LINK_STATE_START,

        __LINK_STATE_PRESENT,

        __LINK_STATE_SCHED,

        __LINK_STATE_NOCARRIER,

        __LINK_STATE_LINKWATCH_PENDING,

        __LINK_STATE_DORMANT,

        __LINK_STATE_QDISC_RUNNING,

};

/*

 * This structure holds at boot time configured netdevice settings. They

 * are then used in the device probing.

 */

struct netdev_boot_setup {

        char name[IFNAMSIZ];

        struct ifmap map;

};

#define NETDEV_BOOT_SETUP_MAX 8

extern int __init netdev_boot_setup(char *str);

/*

 * Structure for NAPI scheduling similar to tasklet but with weighting

 */

struct napi_struct {

        /* The poll_list must only be managed by the entity which

         * changes the state of the NAPI_STATE_SCHED bit.  This means

         * whoever atomically sets that bit can add this napi_struct

         * to the per-cpu poll_list, and whoever clears that bit

         * can remove from the list right before clearing the bit.

         */

        struct list_head        poll_list;

        unsigned long           state;

        int                     weight;

        int                     (*poll)(struct napi_struct *, int);

#ifdef CONFIG_NETPOLL

        spinlock_t              poll_lock;

        int                     poll_owner;

        struct net_device       *dev;

        struct list_head        dev_list;

#endif

};

enum

{

        NAPI_STATE_SCHED,       /* Poll is scheduled */

        NAPI_STATE_DISABLE,     /* Disable pending */

};

extern void FASTCALL(__napi_schedule(struct napi_struct *n));

static inline int napi_disable_pending(struct napi_struct *n)

{

        return test_bit(NAPI_STATE_DISABLE, &n->state);

}

/**

 *      napi_schedule_prep - check if napi can be scheduled

 *      @n: napi context

 *

 * Test if NAPI routine is already running, and if not mark

 * it as running.  This is used as a condition variable

 * insure only one NAPI poll instance runs.  We also make

 * sure there is no pending NAPI disable.

 */

static inline int napi_schedule_prep(struct napi_struct *n)

{

        return !napi_disable_pending(n) &&

                !test_and_set_bit(NAPI_STATE_SCHED, &n->state);

}

/**

 *      napi_schedule - schedule NAPI poll

 *      @n: napi context

 *

 * Schedule NAPI poll routine to be called if it is not already

 * running.

 */

static inline void napi_schedule(struct napi_struct *n)

{

        if (napi_schedule_prep(n))

                __napi_schedule(n);

}

/* Try to reschedule poll. Called by dev->poll() after napi_complete().  */

static inline int napi_reschedule(struct napi_struct *napi)

{

        if (napi_schedule_prep(napi)) {

                __napi_schedule(napi);

                return 1;

        }

        return 0;

}

/**

 *      napi_complete - NAPI processing complete

 *      @n: napi context

 *

 * Mark NAPI processing as complete.

 */

static inline void __napi_complete(struct napi_struct *n)

{

        BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));

        list_del(&n->poll_list);

        smp_mb__before_clear_bit();

        clear_bit(NAPI_STATE_SCHED, &n->state);

}

static inline void napi_complete(struct napi_struct *n)

{

        local_irq_disable();

        __napi_complete(n);

        local_irq_enable();

}

/**

 *      napi_disable - prevent NAPI from scheduling

 *      @n: napi context

 *

 * Stop NAPI from being scheduled on this context.

 * Waits till any outstanding processing completes.

 */

static inline void napi_disable(struct napi_struct *n)

{

        set_bit(NAPI_STATE_DISABLE, &n->state);

        while (test_and_set_bit(NAPI_STATE_SCHED, &n->state))

                msleep(1);

        clear_bit(NAPI_STATE_DISABLE, &n->state);

}

/**

 *      napi_enable - enable NAPI scheduling

 *      @n: napi context

 *

 * Resume NAPI from being scheduled on this context.

 * Must be paired with napi_disable.

 */

static inline void napi_enable(struct napi_struct *n)

{

        BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));

        smp_mb__before_clear_bit();

        clear_bit(NAPI_STATE_SCHED, &n->state);

}

#ifdef CONFIG_SMP

/**

 *      napi_synchronize - wait until NAPI is not running

 *      @n: napi context

 *

 * Wait until NAPI is done being scheduled on this context.

 * Waits till any outstanding processing completes but

 * does not disable future activations.

 */

static inline void napi_synchronize(const struct napi_struct *n)

{

        while (test_bit(NAPI_STATE_SCHED, &n->state))

                msleep(1);

}

#else

# define napi_synchronize(n)    barrier()

#endif

/*

 *      The DEVICE structure.

 *      Actually, this whole structure is a big mistake.  It mixes I/O

 *      data with strictly "high-level" data, and it has to know about

 *      almost every data structure used in the INET module.

 *

 *      FIXME: cleanup struct net_device such that network protocol info

 *      moves out.

 */

struct net_device

{

        /*

         * This is the first field of the "visible" part of this structure

         * (i.e. as seen by users in the "Space.c" file).  It is the name

         * the interface.

         */

        char                    name[IFNAMSIZ];

        /* device name hash chain */

        struct hlist_node       name_hlist;

        /*

         *      I/O specific fields

         *      FIXME: Merge these and struct ifmap into one

         */

        unsigned long           mem_end;        /* shared mem end       */

        unsigned long           mem_start;      /* shared mem start     */

        unsigned long           base_addr;      /* device I/O address   */

        unsigned int            irq;            /* device IRQ number    */

        /*

         *      Some hardware also needs these fields, but they are not

         *      part of the usual set specified in Space.c.

         */

        unsigned char           if_port;        /* Selectable AUI, TP,..*/

        unsigned char           dma;            /* DMA channel          */

        unsigned long           state;

        struct list_head        dev_list;

#ifdef CONFIG_NETPOLL

        struct list_head        napi_list;

#endif

        /* The device initialization function. Called only once. */

        int                     (*init)(struct net_device *dev);

        /* ------- 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 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_IPV6_CSUM       16      /* Can checksum TCP/UDP over IPV6 */

#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_GSO             2048    /* Enable software GSO. */

#define NETIF_F_LLTX            4096    /* LockLess TX - deprecated. Please */

                                        /* do not use LLTX in new drivers */

#define NETIF_F_NETNS_LOCAL     8192    /* Does not change network namespaces */

#define NETIF_F_MULTI_QUEUE     16384   /* Has multiple TX/RX queues */

#define NETIF_F_LRO             32768   /* large receive offload */

        /* Segmentation offload features */

#define NETIF_F_GSO_SHIFT       16

#define NETIF_F_GSO_MASK        0xffff0000

#define NETIF_F_TSO             (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)

#define NETIF_F_UFO             (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)

#define NETIF_F_GSO_ROBUST      (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)

#define NETIF_F_TSO_ECN         (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)

#define NETIF_F_TSO6            (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)

        /* List of features with software fallbacks. */

#define NETIF_F_GSO_SOFTWARE    (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)

#define NETIF_F_GEN_CSUM        (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)

#define NETIF_F_V4_CSUM         (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)

#define NETIF_F_V6_CSUM         (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)

#define NETIF_F_ALL_CSUM        (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)

        struct net_device       *next_sched;

        /* Interface index. Unique device identifier    */

        int                     ifindex;

        int                     iflink;

        struct net_device_stats* (*get_stats)(struct net_device *dev);

        struct net_device_stats stats;

#ifdef CONFIG_WIRELESS_EXT

        /* List of functions to handle Wireless Extensions (instead of ioctl).

         * See <net/iw_handler.h> for details. Jean II */

        const struct iw_handler_def *   wireless_handlers;

        /* Instance data managed by the core of Wireless Extensions. */

        struct iw_public_data * wireless_data;

#endif

        const struct ethtool_ops *ethtool_ops;

        /* Hardware header description */

        const struct header_ops *header_ops;

        /*

         * This marks the end of the "visible" part of the structure. All

         * fields hereafter are internal to the system, and may change at

         * will (read: may be cleaned up at will).

         */

        unsigned int            flags;  /* interface flags (a la BSD)   */

        unsigned short          gflags;

        unsigned short          priv_flags; /* Like 'flags' but invisible to userspace. */

        unsigned short          padded; /* How much padding added by alloc_netdev() */

        unsigned char           operstate; /* RFC2863 operstate */

        unsigned char           link_mode; /* mapping policy to operstate */

        unsigned                mtu;    /* interface MTU value          */

        unsigned short          type;   /* interface hardware type      */

        unsigned short          hard_header_len;        /* hardware hdr length  */

        struct net_device       *master; /* Pointer to master device of a group,

                                          * which this device is member of.

                                          */

        /* Interface address info. */

        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 */

        struct dev_addr_list    *uc_list;       /* Secondary unicast mac addresses */

        int                     uc_count;       /* Number of installed ucasts   */

        int                     uc_promisc;

        struct dev_addr_list    *mc_list;       /* Multicast mac addresses      */

        int                     mc_count;       /* Number of installed mcasts   */

        int                     promiscuity;

        int                     allmulti;

        /* Protocol specific pointers */

        void                    *atalk_ptr;     /* AppleTalk link       */

        void                    *ip_ptr;        /* IPv4 specific data   */

        void                    *dn_ptr;        /* DECnet specific data */

        void                    *ip6_ptr;       /* IPv6 specific data */

        void                    *ec_ptr;        /* Econet specific data */

        void                    *ax25_ptr;      /* AX.25 specific data */

        struct wireless_dev     *ieee80211_ptr; /* IEEE 802.11 specific data,

                                                   assign before registering */

/*

 * Cache line mostly used on receive path (including eth_type_trans())

 */

        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 list_head        qdisc_list;

        unsigned long           tx_queue_len;   /* Max frames per queue allowed */

        /* Partially transmitted GSO packet. */

        struct sk_buff          *gso_skb;

        /* 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 ____cacheline_aligned_in_smp;

        /* cpu id of processor entered to hard_start_xmit or -1,

           if nobody entered there.

         */

        int                     xmit_lock_owner;

        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 ____cacheline_aligned_in_smp;

        /* delayed register/unregister */

        struct list_head        todo_list;

        /* device index hash chain */

        struct hlist_node       index_hlist;

        struct net_device       *link_watch_next;

        /* register/unregister state machine */

        enum { NETREG_UNINITIALIZED=0,

               NETREG_REGISTERED,       /* completed register_netdevice */

               NETREG_UNREGISTERING,    /* called unregister_netdevice */

               NETREG_UNREGISTERED,     /* completed unregister todo */

               NETREG_RELEASED,         /* called free_netdev */

        } reg_state;

        /* Called after device is detached from network. */

        void                    (*uninit)(struct net_device *dev);

        /* Called after last user reference disappears. */

        void                    (*destructor)(struct net_device *dev);

        /* Pointers to interface service routines.      */

        int                     (*open)(struct net_device *dev);

        int                     (*stop)(struct net_device *dev);

#define HAVE_NETDEV_POLL

#define HAVE_CHANGE_RX_FLAGS

        void                    (*change_rx_flags)(struct net_device *dev,

                                                   int flags);

#define HAVE_SET_RX_MODE

        void                    (*set_rx_mode)(struct net_device *dev);

#define HAVE_MULTICAST                   

        void                    (*set_multicast_list)(struct net_device *dev);

#define HAVE_SET_MAC_ADDR                

        int                     (*set_mac_address)(struct net_device *dev,

                                                   void *addr);

#define HAVE_VALIDATE_ADDR

        int                     (*validate_addr)(struct net_device *dev);

#define HAVE_PRIVATE_IOCTL

        int                     (*do_ioctl)(struct net_device *dev,

                                            struct ifreq *ifr, int cmd);

#define HAVE_SET_CONFIG

        int                     (*set_config)(struct net_device *dev,

                                              struct ifmap *map);

#define HAVE_CHANGE_MTU

        int                     (*change_mtu)(struct net_device *dev, int new_mtu);

#define HAVE_TX_TIMEOUT

        void                    (*tx_timeout) (struct net_device *dev);

        void                    (*vlan_rx_register)(struct net_device *dev,

                                                    struct vlan_group *grp);

        void                    (*vlan_rx_add_vid)(struct net_device *dev,

                                                   unsigned short vid);

        void                    (*vlan_rx_kill_vid)(struct net_device *dev,

                                                    unsigned short vid);

        int                     (*neigh_setup)(struct net_device *dev, struct neigh_parms *);

#ifdef CONFIG_NETPOLL

        struct netpoll_info     *npinfo;

#endif

#ifdef CONFIG_NET_POLL_CONTROLLER

        void                    (*poll_controller)(struct net_device *dev);

#endif

        /* Network namespace this network device is inside */

        struct net              *nd_net;

        /* bridge stuff */

        struct net_bridge_port  *br_port;

        /* macvlan */

        struct macvlan_port     *macvlan_port;

        /* class/net/name entry */

        struct device           dev;

        /* space for optional statistics and wireless sysfs groups */

        struct attribute_group  *sysfs_groups[3];

        /* rtnetlink link ops */

        const struct rtnl_link_ops *rtnl_link_ops;

        /* The TX queue control structures */

        unsigned int                    egress_subqueue_count;

        struct net_device_subqueue      egress_subqueue[1];

};

#define to_net_dev(d) container_of(d, struct net_device, dev)

#define NETDEV_ALIGN            32

#define NETDEV_ALIGN_CONST      (NETDEV_ALIGN - 1)

/**

 *      netdev_priv - access network device private data

 *      @dev: network device

 *

 * Get network device private data

 */

static inline void *netdev_priv(const struct net_device *dev)

{

        return dev->priv;