2 * Common code for low-level network console, dump, and debugger code
4 * Derived from netconsole, kgdb-over-ethernet, and netdump patches
7 #ifndef _LINUX_NETPOLL_H
8 #define _LINUX_NETPOLL_H
10 #include <linux/netdevice.h>
11 #include <linux/interrupt.h>
12 #include <linux/list.h>
17 struct net_device *dev;
18 char dev_name[16], *name;
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];
32 struct netpoll *rx_np; /* netpoll that registered an rx_hook */
35 void netpoll_poll(struct netpoll *np);
36 void netpoll_send_udp(struct netpoll *np, const char *msg, int len);
37 int netpoll_parse_options(struct netpoll *np, char *opt);
38 int netpoll_setup(struct netpoll *np);
39 int netpoll_trap(void);
40 void netpoll_set_trap(int trap);
41 void netpoll_cleanup(struct netpoll *np);
42 int __netpoll_rx(struct sk_buff *skb);
43 void netpoll_queue(struct sk_buff *skb);
46 static inline int netpoll_rx(struct sk_buff *skb)
48 struct netpoll_info *npinfo = skb->dev->npinfo;
52 if (!npinfo || (!npinfo->rx_np && !npinfo->rx_flags))
55 spin_lock_irqsave(&npinfo->rx_lock, flags);
56 /* check rx_flags again with the lock held */
57 if (npinfo->rx_flags && __netpoll_rx(skb))
59 spin_unlock_irqrestore(&npinfo->rx_lock, flags);
64 static inline void netpoll_poll_lock(struct net_device *dev)
67 spin_lock(&dev->npinfo->poll_lock);
68 dev->npinfo->poll_owner = smp_processor_id();
72 static inline void netpoll_poll_unlock(struct net_device *dev)
75 dev->npinfo->poll_owner = -1;
76 spin_unlock(&dev->npinfo->poll_lock);
81 #define netpoll_rx(a) 0
82 #define netpoll_poll_lock(a)
83 #define netpoll_poll_unlock(a)