Index: iproute2-2.6.11-w/include/linux/pkt_sched.h
===================================================================
--- iproute2-2.6.11-w/include/linux/pkt_sched.h	(revision 1)
+++ iproute2-2.6.11-w/include/linux/pkt_sched.h	(working copy)
@@ -272,6 +272,28 @@
 	__u32 ctokens;
 };
 
+
+/* PERFLOW section */
+
+#define TC_PERFLOW_DEFAULTLIMIT	1024
+
+struct tc_perflow_qopt
+{
+	struct tc_ratespec 	rate;
+	struct tc_ratespec 	ceil;
+	__u32  limit;
+	__u32  qlen;
+};
+enum
+{
+	TCA_PERFLOW_UNSPEC,
+	TCA_PERFLOW_PARMS,
+	__TCA_PERFLOW_MAX,
+};
+
+#define TCA_PERFLOW_MAX	(__TCA_PERFLOW_MAX - 1)
+
+
 /* HFSC section */
 
 struct tc_hfsc_qopt
Index: iproute2-2.6.11-w/tc/q_perflow.c
===================================================================
--- iproute2-2.6.11-w/tc/q_perflow.c	(revision 0)
+++ iproute2-2.6.11-w/tc/q_perflow.c	(revision 0)
@@ -0,0 +1,153 @@
+/*
+ * q_perflow.c		PERFLOW.
+ *
+ *		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.
+ *
+ * Authors:	Wang Jian <lark@linux.net.cn>, 2005
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#include "utils.h"
+#include "tc_util.h"
+
+static void explain(void)
+{
+	fprintf(stderr,
+"Usage: ... perflow rate RATE [ ceil CEIL ] [ limit LIMIT ] [ qlen QLEN ]\n"
+"\n"
+"rate    rate allocated to each flow (flow can still borrow)\n"
+"ceil    upper limit for each flow (flow can not borrow)\n"
+"limit   maximum concurrent flows\n"
+"qlen    maximum queue length\n"
+	);
+}
+
+#define usage() return(-1)
+
+static int perflow_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
+{
+	struct tc_perflow_qopt opt;
+	struct rtattr *tail;
+	int ok = 0;
+
+	memset(&opt, 0, sizeof(opt));
+
+	while (argc > 0) {
+		if (strcmp(*argv, "rate") == 0) {
+			NEXT_ARG();
+			if (opt.rate.rate) {
+				fprintf(stderr, "Double \"ceil\" spec\n");
+				return -1;
+			}
+			if (get_rate(&opt.rate.rate, *argv)) {
+				fprintf(stderr, "Illegal \"rate\"\n");
+				return -1;
+			}
+			ok++;
+		} else if (strcmp(*argv, "ceil") == 0) {
+			NEXT_ARG();
+			if (opt.ceil.rate) {
+				fprintf(stderr, "Double \"ceil\" spec\n");
+				return -1;
+			}
+			if (get_rate(&opt.ceil.rate, *argv)) {
+				fprintf(stderr, "Illegal \"ceil\"\n");
+				return -1;
+			}
+			ok++;
+		} else if (strcmp(*argv, "limit") == 0) {
+			NEXT_ARG();
+			if (get_size(&opt.limit, *argv)) {
+				fprintf(stderr, "Illegal \"limit\"\n");
+				return -1;
+			}
+			ok++;
+		} else if (strcmp(*argv, "qlen") == 0) {
+			NEXT_ARG();
+			if (get_size(&opt.qlen, *argv)) {
+				fprintf(stderr, "Illegal \"limit\"\n");
+				return -1;
+			}
+			ok++;
+		} else if (strcmp(*argv, "help") == 0) {
+			explain();
+			return -1;
+		} else {
+			fprintf(stderr, "What is \"%s\"?\n", *argv);
+			explain();
+			return -1;
+		}
+		argc--; argv++;
+	}
+
+	if (!ok)
+		return 0;
+
+	if (opt.rate.rate == 0) {
+		fprintf(stderr, "\"rate\" is required.\n");
+		return -1;
+	}
+
+	if (opt.ceil.rate == 0)
+		opt.ceil = opt.rate;
+
+	if (opt.ceil.rate < opt.rate.rate) {
+		fprintf(stderr, "\"ceil\" must be >= \"rate\".\n");
+		return -1;
+	}
+
+	if (opt.limit == 0)
+		opt.limit = TC_PERFLOW_DEFAULTLIMIT;
+
+	if (opt.qlen > 0 && opt.qlen < 5) {
+		fprintf(stderr, "\"qlen\" must be >= 5.\n");
+		return -1;
+	}
+
+	tail = NLMSG_TAIL(n);
+	//addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
+	//addattr_l(n, 1024, TCA_PERFLOW_PARMS, &opt, sizeof(opt));
+	addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
+	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
+
+	return 0;
+}
+
+static int perflow_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+	struct tc_perflow_qopt *qopt;
+
+	if (opt == NULL)
+		return 0;
+
+	if (RTA_PAYLOAD(opt) < sizeof(*qopt))
+		return -1;
+
+	qopt = RTA_DATA(opt);
+
+	SPRINT_BUF(b1);
+	fprintf(f, "rate %s ", sprint_rate(qopt->rate.rate, b1));
+	fprintf(f, "ceil %s ", sprint_rate(qopt->ceil.rate, b1));
+	fprintf(f, "limit %s ", sprint_size(qopt->rate.rate, b1));
+
+	return 0;
+}
+
+struct qdisc_util perflow_qdisc_util = {
+	.id		= "perflow",
+	.parse_qopt	= perflow_parse_opt,
+	.print_qopt	= perflow_print_opt,
+};
Index: iproute2-2.6.11-w/tc/Makefile
===================================================================
--- iproute2-2.6.11-w/tc/Makefile	(revision 1)
+++ iproute2-2.6.11-w/tc/Makefile	(working copy)
@@ -7,6 +7,7 @@
 TCMODULES += q_fifo.o
 TCMODULES += q_sfq.o
 TCMODULES += q_red.o
+TCMODULES += q_perflow.o
 TCMODULES += q_prio.o
 TCMODULES += q_tbf.o
 TCMODULES += q_cbq.o