[LV-kern-commit] CVS: kernel-2.4/arch/vax/lib checksum.c,NONE,1.1

[Andy P. <at...@us...>]

Update of /cvsroot/linux-vax/kernel-2.4/arch/vax/lib
In directory usw-pr-cvs1:/tmp/cvs-serv15834/arch/vax/lib

Added Files:
	checksum.c 
Log Message:
Add network checksum stubs.


--- NEW FILE ---
/*
 *  arch/vax/lib/checksum.c
 *    Fast network checksum routines
 *
 *
 * This file contains network checksum routines
 *  FIXME: implement.
 */
 
#include <linux/string.h>
#include <linux/types.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>
#include <asm/checksum.h>

/*
 * computes a partial checksum, e.g. for TCP/UDP fragments
 */
unsigned int
csum_partial (const unsigned char *buff, int len, unsigned int sum)
{
	  /*
	   * Experiments with ethernet and slip connections show that buff
	   * is aligned on either a 2-byte or 4-byte boundary.
	   */
        return sum;
}

/*
 *	Fold a partial checksum without adding pseudo headers
 */
unsigned short csum_fold(unsigned int sum)
{
        return ((unsigned short) ~sum);
}