]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Common code for low-level network console, dump, and debugger code | |
3 | * | |
4 | * Derived from netconsole, kgdb-over-ethernet, and netdump patches | |
5 | */ | |
6 | ||
7 | #ifndef _LINUX_NETPOLL_H | |
8 | #define _LINUX_NETPOLL_H | |
9 | ||
10 | #include <linux/netdevice.h> | |
11 | #include <linux/interrupt.h> | |
12 | #include <linux/list.h> | |
13 | ||
14 | struct netpoll; | |
15 | ||
16 | struct netpoll { | |
17 | struct net_device *dev; | |
18 | char dev_name[16], *name; | |
1da177e4 LT |
19 | void (*rx_hook)(struct netpoll *, int, char *, int); |
20 | void (*drop)(struct sk_buff *skb); | |
21 | u32 local_ip, remote_ip; | |
22 | u16 local_port, remote_port; | |
23 | unsigned char local_mac[6], remote_mac[6]; | |
115c1d6e JM |
24 | }; |
25 | ||
26 | struct netpoll_info { | |
1da177e4 LT |
27 | spinlock_t poll_lock; |
28 | int poll_owner; | |
115c1d6e JM |
29 | int rx_flags; |
30 | struct netpoll *np; | |
1da177e4 LT |
31 | }; |
32 | ||
33 | void netpoll_poll(struct netpoll *np); | |
34 | void netpoll_send_udp(struct netpoll *np, const char *msg, int len); | |
35 | int netpoll_parse_options(struct netpoll *np, char *opt); | |
36 | int netpoll_setup(struct netpoll *np); | |
37 | int netpoll_trap(void); | |
38 | void netpoll_set_trap(int trap); | |
39 | void netpoll_cleanup(struct netpoll *np); | |
40 | int __netpoll_rx(struct sk_buff *skb); | |
41 | void netpoll_queue(struct sk_buff *skb); | |
42 | ||
43 | #ifdef CONFIG_NETPOLL | |
44 | static inline int netpoll_rx(struct sk_buff *skb) | |
45 | { | |
115c1d6e JM |
46 | struct netpoll_info *npinfo = skb->dev->npinfo; |
47 | ||
48 | if (!npinfo || !npinfo->rx_flags) | |
49 | return 0; | |
50 | ||
51 | return npinfo->np && __netpoll_rx(skb); | |
1da177e4 LT |
52 | } |
53 | ||
54 | static inline void netpoll_poll_lock(struct net_device *dev) | |
55 | { | |
115c1d6e JM |
56 | if (dev->npinfo) { |
57 | spin_lock(&dev->npinfo->poll_lock); | |
58 | dev->npinfo->poll_owner = smp_processor_id(); | |
1da177e4 LT |
59 | } |
60 | } | |
61 | ||
62 | static inline void netpoll_poll_unlock(struct net_device *dev) | |
63 | { | |
115c1d6e JM |
64 | if (dev->npinfo) { |
65 | dev->npinfo->poll_owner = -1; | |
66 | spin_unlock(&dev->npinfo->poll_lock); | |
1da177e4 LT |
67 | } |
68 | } | |
69 | ||
70 | #else | |
71 | #define netpoll_rx(a) 0 | |
72 | #define netpoll_poll_lock(a) | |
73 | #define netpoll_poll_unlock(a) | |
74 | #endif | |
75 | ||
76 | #endif |