[lib] Add fletcher checksum implementation

2008-08-13 Jingjing Duan <Jingjing.Duan@sun.com>

	* lib/checksum.?: (fletcher_checksum) implementation of
	  Fletcher checksum, as per RFC1008.

Signed-off-by: Paul Jakma <paul@quagga.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/checksum.h b/lib/checksum.h
index ccc4da03..d3ce9302 100644
--- a/lib/checksum.h
+++ b/lib/checksum.h
@@ -1 +1,2 @@
 extern int in_cksum(void *, int);
+extern u_int16_t fletcher_checksum(u_char * buffer, int len, u_int16_t offset);