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#ifndef _SUNVNET_H

#define _SUNVNET_H

#define DESC_NCOOKIES(entry_size)       \

        ((entry_size) - sizeof(struct vio_net_desc))

/* length of time before we decide the hardware is borked,

 * and dev->tx_timeout() should be called to fix the problem

 */

#define VNET_TX_TIMEOUT                 (5 * HZ)

#define VNET_TX_RING_SIZE               512

#define VNET_TX_WAKEUP_THRESH(dr)       ((dr)->pending / 4)

/* VNET packets are sent in buffers with the first 6 bytes skipped

 * so that after the ethernet header the IPv4/IPv6 headers are aligned

 * properly.

 */

#define VNET_PACKET_SKIP                6

struct vnet_tx_entry {

        void                    *buf;

        unsigned int            ncookies;

        struct ldc_trans_cookie cookies[2];

};

struct vnet;

struct vnet_port {

        struct vio_driver_state vio;

        struct hlist_node       hash;

        u8                      raddr[ETH_ALEN];

        u8                      switch_port;

        u8                      __pad;

        struct vnet             *vp;

        struct vnet_tx_entry    tx_bufs[VNET_TX_RING_SIZE];

        struct list_head        list;

};

static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio)

{

        return container_of(vio, struct vnet_port, vio);

}

#define VNET_PORT_HASH_SIZE     16

#define VNET_PORT_HASH_MASK     (VNET_PORT_HASH_SIZE - 1)

static inline unsigned int vnet_hashfn(u8 *mac)

{

        unsigned int val = mac[4] ^ mac[5];

        return val & (VNET_PORT_HASH_MASK);

}

struct vnet_mcast_entry {

        u8                      addr[ETH_ALEN];

        u8                      sent;

        u8                      hit;

        struct vnet_mcast_entry *next;

};

struct vnet {

        /* Protects port_list and port_hash.  */

        spinlock_t              lock;

        struct net_device       *dev;

        u32                     msg_enable;

        struct list_head        port_list;

        struct hlist_head       port_hash[VNET_PORT_HASH_SIZE];

        struct vnet_mcast_entry *mcast_list;

        struct list_head        list;

        u64                     local_mac;

};

#endif /* _SUNVNET_H */