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From: Randall Stewart <rrs@FreeBSD.org>
Date: Wed, 12 May 2010 18:33:25 +0000 (UTC)
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Subject: svn commit: r207985 - head/sys/netinet
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Author: rrs
Date: Wed May 12 18:33:25 2010
New Revision: 207985
URL: http://svn.freebsd.org/changeset/base/207985

Log:
  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

Modified:
  head/sys/netinet/sctp_output.c

Modified: head/sys/netinet/sctp_output.c
==============================================================================
--- head/sys/netinet/sctp_output.c	Wed May 12 18:16:08 2010	(r207984)
+++ head/sys/netinet/sctp_output.c	Wed May 12 18:33:25 2010	(r207985)
@@ -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.