Merge remote-tracking branch 'regulator/fix/rk808' into regulator-linus
[cascardo/linux.git] / drivers / net / ethernet / sun / sunvnet.h
1 #ifndef _SUNVNET_H
2 #define _SUNVNET_H
3
4 #include <linux/interrupt.h>
5
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
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
19 #define VNET_MAXPACKET                  (65535ULL + ETH_HLEN + VLAN_HLEN)
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
29 #define VNET_MAXCOOKIES                 (VNET_MAXPACKET/PAGE_SIZE + 1)
30
31 struct vnet_tx_entry {
32         struct sk_buff          *skb;
33         unsigned int            ncookies;
34         struct ldc_trans_cookie cookies[VNET_MAXCOOKIES];
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];
43         u8                      switch_port;
44         u8                      __pad;
45
46         struct vnet             *vp;
47
48         struct vnet_tx_entry    tx_bufs[VNET_TX_RING_SIZE];
49
50         struct list_head        list;
51
52         u32                     stop_rx_idx;
53         bool                    stop_rx;
54         bool                    start_cons;
55
56         struct timer_list       clean_timer;
57
58         u64                     rmtu;
59 };
60
61 static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio)
62 {
63         return container_of(vio, struct vnet_port, vio);
64 }
65
66 #define VNET_PORT_HASH_SIZE     16
67 #define VNET_PORT_HASH_MASK     (VNET_PORT_HASH_SIZE - 1)
68
69 static inline unsigned int vnet_hashfn(u8 *mac)
70 {
71         unsigned int val = mac[4] ^ mac[5];
72
73         return val & (VNET_PORT_HASH_MASK);
74 }
75
76 struct vnet_mcast_entry {
77         u8                      addr[ETH_ALEN];
78         u8                      sent;
79         u8                      hit;
80         struct vnet_mcast_entry *next;
81 };
82
83 struct vnet {
84         /* Protects port_list and port_hash.  */
85         spinlock_t              lock;
86
87         struct net_device       *dev;
88
89         u32                     msg_enable;
90
91         struct list_head        port_list;
92
93         struct hlist_head       port_hash[VNET_PORT_HASH_SIZE];
94
95         struct vnet_mcast_entry *mcast_list;
96
97         struct list_head        list;
98         u64                     local_mac;
99
100         struct tasklet_struct   vnet_tx_wakeup;
101 };
102
103 #endif /* _SUNVNET_H */