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/drivers/net/ethernet/sun/sunvnet.h

http://github.com/mirrors/linux
C++ Header | 83 lines | 52 code | 23 blank | 8 comment | 0 complexity | cb17318dea0ba2d374c451921f07dc4d MD5 | raw file
 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 */