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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [net/] [sunvnet.h] - Rev 69

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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 */
 

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