| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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) { |
| 56 | spin_unlock(&dev->np->poll_lock); |
| 57 | dev->np->poll_owner = -1; |
| 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 |