LXR linux/drivers/net/sunvnet.h

   1#ifndef _SUNVNET_H
   2#define _SUNVNET_H
   3
   4#define DESC_NCOOKIES(entry_size)       \
   5        ((entry_size) - sizeof(struct vio_net_desc))
   6
   7/* length of time before we decide the hardware is borked,
   8 * and dev->tx_timeout() should be called to fix the problem
   9 */
  10#define VNET_TX_TIMEOUT                 (5 * HZ)
  11
  12#define VNET_TX_RING_SIZE               512
  13#define VNET_TX_WAKEUP_THRESH(dr)       ((dr)->pending / 4)
  14
  15/* VNET packets are sent in buffers with the first 6 bytes skipped
  16 * so that after the ethernet header the IPv4/IPv6 headers are aligned
  17 * properly.
  18 */
  19#define VNET_PACKET_SKIP                6
  20
  21struct vnet_tx_entry {
  22        void                    *buf;
  23        unsigned int            ncookies;
  24        struct ldc_trans_cookie cookies[2];
  25};
  26
  27struct vnet;
  28struct vnet_port {
  29        struct vio_driver_state vio;
  30
  31        struct hlist_node       hash;
  32        u8                      raddr[ETH_ALEN];
  33        u8                      switch_port;
  34        u8                      __pad;
  35
  36        struct vnet             *vp;
  37
  38        struct vnet_tx_entry    tx_bufs[VNET_TX_RING_SIZE];
  39
  40        struct list_head        list;
  41};
  42
  43static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio)
  44{
  45        return container_of(vio, struct vnet_port, vio);
  46}
  47
  48#define VNET_PORT_HASH_SIZE     16
  49#define VNET_PORT_HASH_MASK     (VNET_PORT_HASH_SIZE - 1)
  50
  51static inline unsigned int vnet_hashfn(u8 *mac)
  52{
  53        unsigned int val = mac[4] ^ mac[5];
  54
  55        return val & (VNET_PORT_HASH_MASK);
  56}
  57
  58struct vnet_mcast_entry {
  59        u8                      addr[ETH_ALEN];
  60        u8                      sent;
  61        u8                      hit;
  62        struct vnet_mcast_entry *next;
  63};
  64
  65struct vnet {
  66        /* Protects port_list and port_hash.  */
  67        spinlock_t              lock;
  68
  69        struct net_device       *dev;
  70
  71        u32                     msg_enable;
  72
  73        struct list_head        port_list;
  74
  75        struct hlist_head       port_hash[VNET_PORT_HASH_SIZE];
  76
  77        struct vnet_mcast_entry *mcast_list;
  78
  79        struct list_head        list;
  80        u64                     local_mac;
  81};
  82
  83#endif /* _SUNVNET_H */
  84