/*
   *		This program is free software; you can redistribute it and/or
   *		modify it under the terms of the GNU General Public License
   *		as published by the Free Software Foundation; either version
   *		2 of the License, or (at your option) any later version.
   */
  #include <linux/module.h>
  #include <net/checksum.h>
  
  #include <asm/byteorder.h>
  
  /*
   * copy from fs while checksumming, otherwise like csum_partial
   */
  __wsum
  csum_partial_copy_from_user(const void __user *src, void *dst, int len,
  			    __wsum sum, int *csum_err)
  {
  	int missing;
  
  	missing = __copy_from_user(dst, src, len);
  	if (missing) {
  		memset(dst + len - missing, 0, missing);
  		*csum_err = -EFAULT;
  	} else
  		*csum_err = 0;
  
  	return csum_partial(dst, len, sum);
  }
  EXPORT_SYMBOL(csum_partial_copy_from_user);
  
  /* These are from csum_64plus.S */
  EXPORT_SYMBOL(csum_partial);
  EXPORT_SYMBOL(csum_partial_copy);
  EXPORT_SYMBOL(ip_compute_csum);
  EXPORT_SYMBOL(ip_fast_csum);