From ae19ac01545ee2429f2fcbb37b36f8471a5d1498 Mon Sep 17 00:00:00 2001
From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Tue, 19 Nov 2013 21:10:05 -0800
Subject: [PATCH] add fq_codel cli module

Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
---
 lib/Makefile.am          |   2 +
 lib/cli/qdisc/fq_codel.c | 112 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 114 insertions(+)
 create mode 100644 lib/cli/qdisc/fq_codel.c

diff --git a/lib/Makefile.am b/lib/Makefile.am
index f03ca00..f96fc27 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -116,6 +116,7 @@ nobase_pkglib_LTLIBRARIES = \
 	cli/qdisc/plug.la \
 	cli/qdisc/bfifo.la \
 	cli/qdisc/ingress.la \
+	cli/qdisc/fq_codel.la \
 	cli/cls/basic.la \
 	cli/cls/cgroup.la
 
@@ -125,6 +126,7 @@ cli_qdisc_pfifo_la_LDFLAGS = -module -avoid-version
 cli_qdisc_plug_la_LDFLAGS = -module -avoid-version
 cli_qdisc_bfifo_la_LDFLAGS = -module -avoid-version
 cli_qdisc_ingress_la_LDFLAGS = -module -avoid-version
+cli_qdisc_fq_codel_la_LDFLAGS = -module -avoid-version
 cli_cls_basic_la_LDFLAGS = -module -avoid-version
 cli_cls_cgroup_la_LDFLAGS = -module -avoid-version
 endif
diff --git a/lib/cli/qdisc/fq_codel.c b/lib/cli/qdisc/fq_codel.c
new file mode 100644
index 0000000..1602bcb
--- /dev/null
+++ b/lib/cli/qdisc/fq_codel.c
@@ -0,0 +1,112 @@
+/*
+ * lib/cli/qdisc/fq_codel.c     	fq_codel module for CLI lib
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation version 2.1
+ *	of the License.
+ *
+ * Copyright (c) 2013 Cong Wang <xiyou.wangcong@gmail.com>
+ */
+
+#include <netlink/cli/utils.h>
+#include <netlink/cli/tc.h>
+#include <netlink/route/qdisc/fq_codel.h>
+
+static void print_usage(void)
+{
+	printf(
+"Usage: nl-qdisc-add [...] fq_codel [OPTIONS]...\n"
+"\n"
+"OPTIONS\n"
+"     --help                Show this help text.\n"
+"     --limit=LIMIT         Maximum queue length in number of bytes.\n"
+"     --quantum=SIZE        Amount of bytes to serve at once.\n"
+"     --flows=N             Number of flows.\n"
+"     --interval=N          The interval in usec.\n"
+"     --target=N            The minimum delay in usec.\n"
+"\n"
+"EXAMPLE"
+"    # Attach fq_codel with a 4096 packets limit to eth1\n"
+"    nl-qdisc-add --dev=eth1 --parent=root fq_codel --limit=4096\n");
+}
+
+static void fq_codel_parse_argv(struct rtnl_tc *tc, int argc, char **argv)
+{
+	struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) tc;
+	int limit, flows;
+	uint32_t quantum, target, interval;
+
+	for (;;) {
+		int c, optidx = 0;
+		enum {
+			ARG_LIMIT = 257,
+			ARG_QUANTUM = 258,
+			ARG_FLOWS,
+			ARG_INTERVAL,
+			ARG_TARGET,
+		};
+		static struct option long_opts[] = {
+			{ "help", 0, 0, 'h' },
+			{ "limit", 1, 0, ARG_LIMIT },
+			{ "quantum", 1, 0, ARG_QUANTUM },
+			{ "flows", 1, 0, ARG_FLOWS},
+			{ "interval", 1, 0, ARG_INTERVAL},
+			{ "target", 1, 0, ARG_TARGET},
+			{ 0, 0, 0, 0 }
+		};
+	
+		c = getopt_long(argc, argv, "h", long_opts, &optidx);
+		if (c == -1)
+			break;
+
+		switch (c) {
+		case 'h':
+			print_usage();
+			return;
+
+		case ARG_LIMIT:
+			limit = nl_cli_parse_u32(optarg);
+			rtnl_qdisc_fq_codel_set_limit(qdisc, limit);
+			break;
+
+		case ARG_QUANTUM:
+			quantum = nl_cli_parse_u32(optarg);
+			rtnl_qdisc_fq_codel_set_quantum(qdisc, quantum);
+			break;
+
+		case ARG_FLOWS:
+			flows = nl_cli_parse_u32(optarg);
+			rtnl_qdisc_fq_codel_set_flows(qdisc, flows);
+			break;
+
+		case ARG_INTERVAL:
+			interval = nl_cli_parse_u32(optarg);
+			rtnl_qdisc_fq_codel_set_interval(qdisc, interval);
+			break;
+
+		case ARG_TARGET:
+			target = nl_cli_parse_u32(optarg);
+			rtnl_qdisc_fq_codel_set_target(qdisc, target);
+			break;
+
+		}
+ 	}
+}
+
+static struct nl_cli_tc_module fq_codel_module =
+{
+	.tm_name		= "fq_codel",
+	.tm_type		= RTNL_TC_TYPE_QDISC,
+	.tm_parse_argv		= fq_codel_parse_argv,
+};
+
+static void __init fq_codel_init(void)
+{
+	nl_cli_tc_register(&fq_codel_module);
+}
+
+static void __exit fq_codel_exit(void)
+{
+	nl_cli_tc_unregister(&fq_codel_module);
+}