Commit | Line | Data |
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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; | |
19 | int rx_flags; | |
20 | void (*rx_hook)(struct netpoll *, int, char *, int); | |
21 | void (*drop)(struct sk_buff *skb); | |
22 | u32 local_ip, remote_ip; | |
23 | u16 local_port, remote_port; | |
24 | unsigned char local_mac[6], remote_mac[6]; | |
25 | spinlock_t poll_lock; | |
26 | int poll_owner; | |
27 | }; | |
28 | ||
29 | void netpoll_poll(struct netpoll *np); | |
30 | void netpoll_send_udp(struct netpoll *np, const char *msg, int len); | |
31 | int netpoll_parse_options(struct netpoll *np, char *opt); | |
32 | int netpoll_setup(struct netpoll *np); | |
33 | int netpoll_trap(void); | |
34 | void netpoll_set_trap(int trap); | |
35 | void netpoll_cleanup(struct netpoll *np); | |
36 | int __netpoll_rx(struct sk_buff *skb); | |
37 | void netpoll_queue(struct sk_buff *skb); | |
38 | ||
39 | #ifdef CONFIG_NETPOLL | |
40 | static inline int netpoll_rx(struct sk_buff *skb) | |
41 | { | |
42 | return skb->dev->np && skb->dev->np->rx_flags && __netpoll_rx(skb); | |
43 | } | |
44 | ||
45 | static inline void netpoll_poll_lock(struct net_device *dev) | |
46 | { | |
47 | if (dev->np) { | |
48 | spin_lock(&dev->np->poll_lock); | |
49 | dev->np->poll_owner = smp_processor_id(); | |
50 | } | |
51 | } | |
52 | ||
53 | static inline void netpoll_poll_unlock(struct net_device *dev) | |
54 | { | |
55 | if (dev->np) { | |
1da177e4 | 56 | dev->np->poll_owner = -1; |
6ca4f65e | 57 | spin_unlock(&dev->np->poll_lock); |
1da177e4 LT |
58 | } |
59 | } | |
60 | ||
61 | #else | |
62 | #define netpoll_rx(a) 0 | |
63 | #define netpoll_poll_lock(a) | |
64 | #define netpoll_poll_unlock(a) | |
65 | #endif | |
66 | ||
67 | #endif |