mpls_in.h

技术文件名称：MPLSv1.0软件模块测试规程

/*      Definition module : in.h
 
        Copyright 1999 Diab Data, USA
 
        Description :
        Berkeley socket standard header file
 
	4/14/99
*/

/*
 * Constants and structures defined by the internet system,
 * Per RFC 790, September 1981.
 */

#ifndef MPLS_IN_H
#define	MPLS_IN_H

#ifdef	__cplusplus
extern "C" {
#endif

/*
 * macros to convert to and from network byte ordering
 * dummies if target is big endian
 */
#ifdef __LITTLE_ENDIAN__
# define htonl(addr)	((((unsigned long)(addr) & 0x000000FF)<<24) |	\
 			 (((unsigned long)(addr) & 0x0000FF00)<<8)  |	\
			 (((unsigned long)(addr) & 0x00FF0000)>>8)  |	\
			 (((unsigned long)(addr) & 0xFF000000)>>24))
# define ntohl(addr)	htonl(addr)
# define htons(addr)	((((unsigned short)(addr) & 0x000000FF)<<8) |	\
			 (((unsigned short)(addr) & 0x0000FF00)>>8))

# define ntohs(addr)	htons(addr)
#else
# define htonl(a)	((unsigned long)(a))
# define ntohl(a)	((unsigned long)(a))
# define htons(a)	((unsigned short)(a))
# define ntohs(a)	((unsigned short)(a))
#endif

#ifdef	__cplusplus
}
#endif

#endif	/* _NETINET_IN_H */