snap_kern_iface.h

一个学习SNMP项目：tmoerlan.

/* $Id: snap_kern_iface.h,v 1.2 2003/09/17 11:26:10 tmoerlan Exp $ */

#ifndef _SNAP_KERN_IFACE_H
#define _SNAP_KERN_IFACE

#ifdef CONFIG_IP_SNAP

#include <asm/types.h>
#include <net/if.h>
#include "packet.h"
#include <netinet/in.h>    /* sockaddr_in */

#ifdef __KERNEL__
extern int snap_here(__u32 *addr, struct sk_buff *skb);
extern int next_hop(struct rtable **rtp, __u32 daddr, int tos);
extern int ishere(__u32 daddr, struct sk_buff *skb);
extern int getdevindex(struct device *dev_in);
extern int snap_demux_send(__u16 destport, struct sk_buff *skb,
		      void *s, unsigned int slen);
extern int snap_send_packet(packet_t *p, int stack_amt, __u32 dest,
			    unsigned char rb, int ep, short direct);
extern struct sk_buff *skb_grow(struct sk_buff *skb, int newtailroom);
extern packet_t *pkt_dup(packet_t *p);
#else
extern void init_kern_iface(struct sockaddr_in *herehint);
extern int snap_here(__u32 *addr, packet_t *p);
extern int next_hop(__u32 *hop, __u32 daddr, int tos);
extern int next_hop_and_dev(__u32 *hop, int *dev, __u32 daddr);
extern int ishere(__u32 daddr, packet_t *p);
extern int snap_demux_send(__u16 destport, packet_t *p,
		      void *s, unsigned int slen);
extern int snap_send_packet(packet_t *p, int stack_amt, __u32 dest,
			    unsigned char rb, int ep, short direct);
extern packet_t *pkt_dup(packet_t *p);

struct if_info {
  struct if_nameindex ifni;
  __u32 addr;
  char hwaddr[32];
};

extern unsigned int numifs;
extern struct if_info *ifs;
extern unsigned int maxifnum;
extern unsigned int ifs_size;
#endif

#ifdef CONFIG_IP_SNAP_DEBUG
extern int sysctl_snap_debug_level;
#endif /* CONFIG_IP_SNAP_DEBUG */
#endif /* CONFIG_IP_SNAP */
#endif /* !_SNAP_KERN_IFACE_H */