Module Name: src
Committed By: gdt
Date: Wed May 25 23:17:44 UTC 2011
Modified Files:
src/sys/netinet: tcp_var.h
Log Message:
Add comment urging a separation of TCP_RTT_SHIFT into separate defines
describing the EWMA calculation and the storage representation.
(No code change.)
To generate a diff of this commit:
cvs rdiff -u -r1.166 -r1.167 src/sys/netinet/tcp_var.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/netinet/tcp_var.h
diff -u src/sys/netinet/tcp_var.h:1.166 src/sys/netinet/tcp_var.h:1.167
--- src/sys/netinet/tcp_var.h:1.166 Tue May 3 18:28:45 2011
+++ src/sys/netinet/tcp_var.h Wed May 25 23:17:44 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: tcp_var.h,v 1.166 2011/05/03 18:28:45 dyoung Exp $ */
+/* $NetBSD: tcp_var.h,v 1.167 2011/05/25 23:17:44 gdt Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -571,6 +571,9 @@
* average (smoothed = (1/scale)sample + ((scale-1)/scale)smoothed).
* This results in alpha of 0.125 and beta of 0.25, following RFC2988
* section 2.3
+ *
+ * XXX Change SHIFT values to LGWEIGHT and REP_SHIFT, and adjust
+ * the code to use the correct ones.
*/
#define TCP_RTT_SHIFT 3 /* shift for srtt; 3 bits frac. */
#define TCP_RTTVAR_SHIFT 2 /* multiplier for rttvar; 2 bits */
