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From: Oleg Bulyzhin <oleg@FreeBSD.org>
Date: Sat, 5 Dec 2009 23:27:21 +0000 (UTC)
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Subject: svn commit: r200170 - head/sys/netinet/ipfw
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Author: oleg
Date: Sat Dec  5 23:27:21 2009
New Revision: 200170
URL: http://svn.freebsd.org/changeset/base/200170

Log:
  Fix burst processing for WF2Q pipes - do not increase available burst size
  unless pipe is idle. This should fix follwing issues:
  - 'dummynet: OUCH! pipe should have been idle!' log messages.
  - exceeding configured pipe bandwidth.
  
  MFC after:	1 week

Modified:
  head/sys/netinet/ipfw/ip_dummynet.c

Modified: head/sys/netinet/ipfw/ip_dummynet.c
==============================================================================
--- head/sys/netinet/ipfw/ip_dummynet.c	Sat Dec  5 23:23:46 2009	(r200169)
+++ head/sys/netinet/ipfw/ip_dummynet.c	Sat Dec  5 23:27:21 2009	(r200170)
@@ -1447,7 +1447,9 @@ dummynet_io(struct mbuf **m0, int dir, s
 				q->numbytes += pipe->bandwidth;
 		}
 	} else {			/* WF2Q. */
-		if (pipe->idle_time < curr_time) {
+		if (pipe->idle_time < curr_time &&
+		    pipe->scheduler_heap.elements == 0 &&
+		    pipe->not_eligible_heap.elements == 0) {
 			/* Calculate available burst size. */
 			pipe->numbytes +=
 			    (curr_time - pipe->idle_time - 1) * pipe->bandwidth;