-unsigned int csum_partial(const unsigned char * buff, int len,
- unsigned int sum);
-
-/*
- * the same as csum_partial, but copies from src while it
- * checksums, and handles user-space pointer exceptions correctly, when needed.
- *
- * here even more important to align src and dst on a 32-bit (or even
- * better 64-bit) boundary
- */
-
-unsigned int csum_partial_copy_to(const char *src, char *dst, int len,
- int sum, int *err_ptr);
-unsigned int csum_partial_copy_from(const char *src, char *dst, int len,
- int sum, int *err_ptr);