[deliverable/linux.git] / drivers / net / ethernet / sun / sunvnet.h

#ifndef _SUNVNET_H
#define _SUNVNET_H

#include <linux/interrupt.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)

/* length of time (or less) we expect pending descriptors to be marked
 * as VIO_DESC_DONE and skbs ready to be freed
 */
#define	VNET_CLEAN_TIMEOUT		((HZ/100)+1)

#define VNET_MAXPACKET			(65535ULL + ETH_HLEN + VLAN_HLEN)
#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

#define VNET_MAXCOOKIES			(VNET_MAXPACKET/PAGE_SIZE + 1)

struct vnet_tx_entry {
	struct sk_buff		*skb;
	unsigned int		ncookies;
	struct ldc_trans_cookie	cookies[VNET_MAXCOOKIES];
};

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;

	u32			stop_rx_idx;
	bool			stop_rx;
	bool			start_cons;

	struct timer_list	clean_timer;

	u64			rmtu;

	struct napi_struct	napi;
	u32			napi_stop_idx;
	bool			napi_resume;
	int			rx_event;
	u16			q_index;
};

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;

	int			nports;
};

#endif /* _SUNVNET_H */
Commit	Line	Data
4c521e42 DM	1	#ifndef _SUNVNET_H
	2	#define _SUNVNET_H
	3
1d311ad2 SV	4	#include <linux/interrupt.h>
1d311ad2 SV	5
4c521e42 DM	6	#define DESC_NCOOKIES(entry_size) \
	7	((entry_size) - sizeof(struct vio_net_desc))
	8
	9	/* length of time before we decide the hardware is borked,
	10	* and dev->tx_timeout() should be called to fix the problem
	11	*/
	12	#define VNET_TX_TIMEOUT (5 * HZ)
	13
8e845f4c DS	14	/* length of time (or less) we expect pending descriptors to be marked
	15	* as VIO_DESC_DONE and skbs ready to be freed
	16	*/
	17	#define VNET_CLEAN_TIMEOUT ((HZ/100)+1)
	18
42db672d	19	#define VNET_MAXPACKET (65535ULL + ETH_HLEN + VLAN_HLEN)
4c521e42 DM	20	#define VNET_TX_RING_SIZE 512
	21	#define VNET_TX_WAKEUP_THRESH(dr) ((dr)->pending / 4)
	22
	23	/* VNET packets are sent in buffers with the first 6 bytes skipped
	24	* so that after the ethernet header the IPv4/IPv6 headers are aligned
	25	* properly.
	26	*/
	27	#define VNET_PACKET_SKIP 6
	28
42db672d DS	29	#define VNET_MAXCOOKIES (VNET_MAXPACKET/PAGE_SIZE + 1)
42db672d DS	30
4c521e42	31	struct vnet_tx_entry {
8e845f4c	32	struct sk_buff *skb;
4c521e42	33	unsigned int ncookies;
42db672d	34	struct ldc_trans_cookie cookies[VNET_MAXCOOKIES];
4c521e42 DM	35	};
	36
	37	struct vnet;
	38	struct vnet_port {
	39	struct vio_driver_state vio;
	40
	41	struct hlist_node hash;
	42	u8 raddr[ETH_ALEN];
028ebff2 DM	43	u8 switch_port;
028ebff2 DM	44	u8 __pad;
4c521e42 DM	45
	46	struct vnet *vp;
	47
	48	struct vnet_tx_entry tx_bufs[VNET_TX_RING_SIZE];
	49
	50	struct list_head list;
d1015645 SV	51
	52	u32 stop_rx_idx;
	53	bool stop_rx;
	54	bool start_cons;
e4defc77	55
8e845f4c DS	56	struct timer_list clean_timer;
8e845f4c DS	57
e4defc77	58	u64 rmtu;
69088822 SV	59
	60	struct napi_struct napi;
	61	u32 napi_stop_idx;
	62	bool napi_resume;
	63	int rx_event;
d51bffd1	64	u16 q_index;
4c521e42 DM	65	};
	66
	67	static inline struct vnet_port to_vnet_port(struct vio_driver_state vio)
	68	{
	69	return container_of(vio, struct vnet_port, vio);
	70	}
	71
	72	#define VNET_PORT_HASH_SIZE 16
	73	#define VNET_PORT_HASH_MASK (VNET_PORT_HASH_SIZE - 1)
	74
	75	static inline unsigned int vnet_hashfn(u8 *mac)
	76	{
	77	unsigned int val = mac[4] ^ mac[5];
	78
	79	return val & (VNET_PORT_HASH_MASK);
	80	}
	81
028ebff2 DM	82	struct vnet_mcast_entry {
	83	u8 addr[ETH_ALEN];
	84	u8 sent;
	85	u8 hit;
	86	struct vnet_mcast_entry *next;
	87	};
	88
4c521e42 DM	89	struct vnet {
	90	/* Protects port_list and port_hash. */
	91	spinlock_t lock;
	92
	93	struct net_device *dev;
	94
	95	u32 msg_enable;
4c521e42 DM	96
	97	struct list_head port_list;
	98
	99	struct hlist_head port_hash[VNET_PORT_HASH_SIZE];
9184a046	100
028ebff2 DM	101	struct vnet_mcast_entry *mcast_list;
028ebff2 DM	102
9184a046 DM	103	struct list_head list;
9184a046 DM	104	u64 local_mac;
1d311ad2	105
d51bffd1	106	int nports;
4c521e42 DM	107	};
	108
	109	#endif /* _SUNVNET_H */