net-support.h

一个基于linux的TCP/IP协议栈的实现

/* net-support.h
 * [e-mail]
 * 2006-10-20
 */

#ifndef INCLUDED_NET_SUPPORT_H
#define INCLUDED_NET_SUPPORT_H

#include <sys/socket.h>

#define E_NOTFOUND  8
#define E_SOCK      7
#define E_LOOKUP    6
#define E_VERSION   5
#define E_USAGE     4
#define E_OPTERR    3
#define E_INTERN    2
#define E_NOSUPP    1

#define FLAG_EXT       3
#define FLAG_NUM_HOST  4
#define FLAG_NUM_PORT  8
#define FLAG_NUM_USER 16
#define FLAG_NUM     (FLAG_NUM_HOST|FLAG_NUM_PORT|FLAG_NUM_USER)
#define FLAG_SYM      32
#define FLAG_CACHE    64
#define FLAG_FIB     128
#define FLAG_VERBOSE 256

#define E_USAGE           4

struct hwtype {
	char *name;
	char *title;
	int type;
	int alen;
	char *(*print) (unsigned char *);
	int (*input) (char *, struct sockaddr *);
	int (*activate) (int fd);
	int suppress_null_addr;
};
extern int hw_null_address(struct hwtype *hw, void *addr);
extern int get_socket_for_af(int af);
extern struct hwtype *get_hwntype(int type);
extern void print_hwlist(int type);
extern void print_aflist(int type);
extern struct aftype *get_aftype(const char *name);
extern struct hwtype *get_hwtype(const char *name);
extern int getargs(char *string, char *arguments[]);

/* This structure defines protocol families and their handlers. */
struct aftype {
	char *name;
	char *title;
	int af;
	int alen;
	char *(*print) (unsigned char *);
	char *(*sprint) (struct sockaddr *, int numeric);
	int (*input) (int type, char *bufp, struct sockaddr *);
	void (*herror) (char *text);
	int (*rprint) (int options);
	int (*rinput) (int typ, int ext, char **argv);
	int (*getmask) (char *src, struct sockaddr * mask, char *name);
	int fd;
	char *flag_file;
};

extern struct aftype *aftypes[];

extern struct aftype *get_afntype(int type);

#endif //INCLUDED_NET_SUPPORT_H