[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)

#define	VNET_MINTSO	 2048	/* VIO protocol's minimum TSO len */
#define	VNET_MAXTSO	65535	/* VIO protocol's maximum TSO len */

/* 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];
	unsigned		switch_port:1;
	unsigned		tso:1;
	unsigned		__pad:14;

	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;
	u16			tsolen;

	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
368e36ed DS	23	#define VNET_MINTSO 2048 /* VIO protocol's minimum TSO len */
	24	#define VNET_MAXTSO 65535 /* VIO protocol's maximum TSO len */
	25
4c521e42 DM	26	/* VNET packets are sent in buffers with the first 6 bytes skipped
	27	* so that after the ethernet header the IPv4/IPv6 headers are aligned
	28	* properly.
	29	*/
	30	#define VNET_PACKET_SKIP 6
	31
42db672d DS	32	#define VNET_MAXCOOKIES (VNET_MAXPACKET/PAGE_SIZE + 1)
42db672d DS	33
4c521e42	34	struct vnet_tx_entry {
8e845f4c	35	struct sk_buff *skb;
4c521e42	36	unsigned int ncookies;
42db672d	37	struct ldc_trans_cookie cookies[VNET_MAXCOOKIES];
4c521e42 DM	38	};
	39
	40	struct vnet;
	41	struct vnet_port {
	42	struct vio_driver_state vio;
	43
	44	struct hlist_node hash;
	45	u8 raddr[ETH_ALEN];
368e36ed DS	46	unsigned switch_port:1;
	47	unsigned tso:1;
	48	unsigned __pad:14;
4c521e42 DM	49
	50	struct vnet *vp;
	51
	52	struct vnet_tx_entry tx_bufs[VNET_TX_RING_SIZE];
	53
	54	struct list_head list;
d1015645 SV	55
	56	u32 stop_rx_idx;
	57	bool stop_rx;
	58	bool start_cons;
e4defc77	59
8e845f4c DS	60	struct timer_list clean_timer;
8e845f4c DS	61
e4defc77	62	u64 rmtu;
368e36ed	63	u16 tsolen;
69088822 SV	64
	65	struct napi_struct napi;
	66	u32 napi_stop_idx;
	67	bool napi_resume;
	68	int rx_event;
d51bffd1	69	u16 q_index;
4c521e42 DM	70	};
	71
	72	static inline struct vnet_port to_vnet_port(struct vio_driver_state vio)
	73	{
	74	return container_of(vio, struct vnet_port, vio);
	75	}
	76
	77	#define VNET_PORT_HASH_SIZE 16
	78	#define VNET_PORT_HASH_MASK (VNET_PORT_HASH_SIZE - 1)
	79
	80	static inline unsigned int vnet_hashfn(u8 *mac)
	81	{
	82	unsigned int val = mac[4] ^ mac[5];
	83
	84	return val & (VNET_PORT_HASH_MASK);
	85	}
	86
028ebff2 DM	87	struct vnet_mcast_entry {
	88	u8 addr[ETH_ALEN];
	89	u8 sent;
	90	u8 hit;
	91	struct vnet_mcast_entry *next;
	92	};
	93
4c521e42 DM	94	struct vnet {
	95	/* Protects port_list and port_hash. */
	96	spinlock_t lock;
	97
	98	struct net_device *dev;
	99
	100	u32 msg_enable;
4c521e42 DM	101
	102	struct list_head port_list;
	103
	104	struct hlist_head port_hash[VNET_PORT_HASH_SIZE];
9184a046	105
028ebff2 DM	106	struct vnet_mcast_entry *mcast_list;
028ebff2 DM	107
9184a046 DM	108	struct list_head list;
9184a046 DM	109	u64 local_mac;
1d311ad2	110
d51bffd1	111	int nports;
4c521e42 DM	112	};
	113
	114	#endif /* _SUNVNET_H */