Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
14struct netpoll;
15
16struct 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
29void netpoll_poll(struct netpoll *np);
30void netpoll_send_udp(struct netpoll *np, const char *msg, int len);
31int netpoll_parse_options(struct netpoll *np, char *opt);
32int netpoll_setup(struct netpoll *np);
33int netpoll_trap(void);
34void netpoll_set_trap(int trap);
35void netpoll_cleanup(struct netpoll *np);
36int __netpoll_rx(struct sk_buff *skb);
37void netpoll_queue(struct sk_buff *skb);
38
39#ifdef CONFIG_NETPOLL
40static inline int netpoll_rx(struct sk_buff *skb)
41{
42 return skb->dev->np && skb->dev->np->rx_flags && __netpoll_rx(skb);
43}
44
45static 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
53static 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