[linux-2.6-block.git] / drivers / net / sunvnet.h

#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];

	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 {
	/* 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 list_head	list;
	u64			local_mac;
};

#endif /* _SUNVNET_H */
Commit	Line	Data
4c521e42 DM	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
	21	struct vnet_tx_entry {
	22	void *buf;
	23	unsigned int ncookies;
	24	struct ldc_trans_cookie cookies[2];
	25	};
	26
	27	struct vnet;
	28	struct vnet_port {
	29	struct vio_driver_state vio;
	30
	31	struct hlist_node hash;
	32	u8 raddr[ETH_ALEN];
	33
	34	struct vnet *vp;
	35
	36	struct vnet_tx_entry tx_bufs[VNET_TX_RING_SIZE];
	37
	38	struct list_head list;
	39	};
	40
	41	static inline struct vnet_port to_vnet_port(struct vio_driver_state vio)
	42	{
	43	return container_of(vio, struct vnet_port, vio);
	44	}
	45
	46	#define VNET_PORT_HASH_SIZE 16
	47	#define VNET_PORT_HASH_MASK (VNET_PORT_HASH_SIZE - 1)
	48
	49	static inline unsigned int vnet_hashfn(u8 *mac)
	50	{
	51	unsigned int val = mac[4] ^ mac[5];
	52
	53	return val & (VNET_PORT_HASH_MASK);
	54	}
	55
	56	struct vnet {
	57	/* Protects port_list and port_hash. */
	58	spinlock_t lock;
	59
	60	struct net_device *dev;
	61
	62	u32 msg_enable;
4c521e42 DM	63
	64	struct list_head port_list;
	65
	66	struct hlist_head port_hash[VNET_PORT_HASH_SIZE];
9184a046 DM	67
	68	struct list_head list;
	69	u64 local_mac;
4c521e42 DM	70	};
	71
	72	#endif /* _SUNVNET_H */