From ea9b0170bf3719d7e6057ba015ae6acbd17fe17e Mon Sep 17 00:00:00 2001
From: Randall Stewart <rrs@FreeBSD.org>
Date: Wed, 12 May 2010 18:33:25 +0000
Subject: [PATCH] Fix an old long time bug in generating a fwd-tsn. This would
 appear when greater than the size of mbuf TSN's would need to be skipped.

MFC after:	3 days
---
 sys/netinet/sctp_output.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sys/netinet/sctp_output.c b/sys/netinet/sctp_output.c
index 522b52fcc18..96a45754bb1 100644
--- a/sys/netinet/sctp_output.c
+++ b/sys/netinet/sctp_output.c
@@ -9775,9 +9775,8 @@ sctp_fill_in_rest:
 				    0xff, 0xff, cnt_of_space,
 				    space_needed);
 			}
-			cnt_of_skipped = (cnt_of_space -
-			    ((sizeof(struct sctp_forward_tsn_chunk)) /
-			    sizeof(struct sctp_strseq)));
+			cnt_of_skipped = cnt_of_space - sizeof(struct sctp_forward_tsn_chunk);
+			cnt_of_skipped /= sizeof(struct sctp_strseq);
 			/*-
 			 * Go through and find the TSN that will be the one
 			 * we report.