diff options
Diffstat (limited to 'drivers/net/sunvnet.h')
-rw-r--r-- | drivers/net/sunvnet.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/net/sunvnet.h b/drivers/net/sunvnet.h new file mode 100644 index 000000000000..1c887302d46d --- /dev/null +++ b/drivers/net/sunvnet.h | |||
@@ -0,0 +1,70 @@ | |||
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; | ||
63 | struct vio_dev *vdev; | ||
64 | |||
65 | struct list_head port_list; | ||
66 | |||
67 | struct hlist_head port_hash[VNET_PORT_HASH_SIZE]; | ||
68 | }; | ||
69 | |||
70 | #endif /* _SUNVNET_H */ | ||