sunvnet.h

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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 */