Merge branch 'dde' into upstream-merged

1 files changed, 55 insertions, 0 deletions

diff --git a/libdde_linux26/contrib/include/linux/tfrc.h b/libdde_linux26/contrib/include/linux/tfrc.h
new file mode 100644
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+++ b/libdde_linux26/contrib/include/linux/tfrc.h
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+#ifndef _LINUX_TFRC_H_
+#define _LINUX_TFRC_H_
+/*
+ *  TFRC - Data Structures for the TCP-Friendly Rate Control congestion
+ *         control mechanism as specified in RFC 3448.
+ *
+ *  Copyright (c) 2005 The University of Waikato, Hamilton, New Zealand.
+ *  Copyright (c) 2005 Ian McDonald <iam4@cs.waikato.ac.nz>
+ *  Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ *  Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ */
+#include <linux/types.h>
+
+/** 	tfrc_rx_info    -    TFRC Receiver Data Structure
+ *
+ * 	@tfrcrx_x_recv:	receiver estimate of sending rate (3.2.2)
+ * 	@tfrcrx_rtt:	round-trip-time (communicated by sender)
+ * 	@tfrcrx_p:	current estimate of loss event rate (3.2.2)
+ */
+struct tfrc_rx_info {
+  	__u32 tfrcrx_x_recv;
+	__u32 tfrcrx_rtt;
+  	__u32 tfrcrx_p;
+};
+
+/** 	tfrc_tx_info    -    TFRC Sender Data Structure
+ *
+ * 	@tfrctx_x:	computed transmit rate (4.3 (4))
+ * 	@tfrctx_x_recv: receiver estimate of send rate (4.3)
+ * 	@tfrctx_x_calc:	return value of throughput equation (3.1)
+ * 	@tfrctx_rtt:	(moving average) estimate of RTT (4.3)
+ * 	@tfrctx_p:	current loss event rate (5.4)
+ * 	@tfrctx_rto:	estimate of RTO, equals 4*RTT (4.3)
+ * 	@tfrctx_ipi:	inter-packet interval (4.6)
+ *
+ *  Note: X and X_recv are both maintained in units of 64 * bytes/second. This
+ *        enables a finer resolution of sending rates and avoids problems with
+ *        integer arithmetic; u32 is not sufficient as scaling consumes 6 bits.
+ */
+struct tfrc_tx_info {
+	__u64 tfrctx_x;
+	__u64 tfrctx_x_recv;
+	__u32 tfrctx_x_calc;
+	__u32 tfrctx_rtt;
+	__u32 tfrctx_p;
+	__u32 tfrctx_rto;
+	__u32 tfrctx_ipi;
+};
+
+#endif /* _LINUX_TFRC_H_ */