add ingress qdisc

This patch adds ingress qdisc to libnl.

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

@@ -81,7 +81,7 @@ libnl_route_3_la_SOURCES = \
 	route/qdisc/blackhole.c route/qdisc/cbq.c route/qdisc/dsmark.c \
 	route/qdisc/fifo.c route/qdisc/htb.c route/qdisc/netem.c \
 	route/qdisc/prio.c route/qdisc/red.c route/qdisc/sfq.c \
-	route/qdisc/tbf.c route/qdisc/plug.c \
+	route/qdisc/tbf.c route/qdisc/plug.c route/qdisc/ingress.c \
 	\
 	fib_lookup/lookup.c fib_lookup/request.c \
 	\
@@ -112,6 +112,7 @@ nobase_pkglib_LTLIBRARIES = \
 	cli/qdisc/pfifo.la \
 	cli/qdisc/plug.la \
 	cli/qdisc/bfifo.la \
+	cli/qdisc/ingress.la \
 	cli/cls/basic.la \
 	cli/cls/cgroup.la
 
@@ -120,6 +121,7 @@ cli_qdisc_blackhole_la_LDFLAGS = -module -avoid-version
 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_cls_basic_la_LDFLAGS = -module -avoid-version
 cli_cls_cgroup_la_LDFLAGS = -module -avoid-version
 endif

lib/cli/qdisc/ingress.c

@@ -0,0 +1,65 @@
+
+/*
+ * src/lib/ingress.c     	ingress 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>
+
+static void print_usage(void)
+{
+	printf(
+"Usage: nl-qdisc-add [...] ingress\n"
+"\n"
+"OPTIONS\n"
+"     --help                Show this help text.\n"
+"\n"
+"EXAMPLE"
+"    # Attach ingress to eth1\n"
+"    nl-qdisc-add --dev=eth1 --parent=root ingress\n");
+}
+
+static void ingress_parse_argv(struct rtnl_tc *tc, int argc, char **argv)
+{
+	for (;;) {
+		int c, optidx = 0;
+		static struct option long_opts[] = {
+			{ "help", 0, 0, 'h' },
+			{ 0, 0, 0, 0 }
+		};
+
+		c = getopt_long(argc, argv, "h", long_opts, &optidx);
+		if (c == -1)
+			break;
+
+		switch (c) {
+		case 'h':
+			print_usage();
+			return;
+		}
+	}
+}
+
+static struct nl_cli_tc_module ingress_module =
+{
+	.tm_name		= "ingress",
+	.tm_type		= RTNL_TC_TYPE_QDISC,
+	.tm_parse_argv		= ingress_parse_argv,
+};
+
+static void __init ingress_init(void)
+{
+	nl_cli_tc_register(&ingress_module);
+}
+
+static void __exit ingress_exit(void)
+{
+	nl_cli_tc_unregister(&ingress_module);
+}

lib/route/qdisc/ingress.c

@@ -0,0 +1,64 @@
+/*
+ * lib/route/qdisc/ingress.c		ingress
+ *
+ *	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>
+ */
+
+/**
+ * @ingroup qdisc
+ * @defgroup qdisc_ingress Ingress qdisc
+ *
+ * @{
+ */
+
+#include <netlink-private/netlink.h>
+#include <netlink-private/tc.h>
+#include <netlink/netlink.h>
+#include <netlink-private/route/tc-api.h>
+#include <netlink/route/qdisc.h>
+#include <netlink/utils.h>
+
+struct dumb {
+	uint32_t foo;
+};
+
+static int dumb_msg_parser(struct rtnl_tc *tc, void *data)
+{
+	return 0;
+}
+
+static void dumb_dump_line(struct rtnl_tc *tc, void *data,
+			    struct nl_dump_params *p)
+{
+}
+
+static int dumb_msg_fill(struct rtnl_tc *tc, void *data, struct nl_msg *msg)
+{
+	return 0;
+}
+
+static struct rtnl_tc_ops ingress_ops = {
+	.to_kind		= "ingress",
+	.to_type		= RTNL_TC_TYPE_QDISC,
+	.to_size		= sizeof(struct dumb),
+	.to_msg_parser		= dumb_msg_parser,
+	.to_dump[NL_DUMP_LINE]	= dumb_dump_line,
+	.to_msg_fill		= dumb_msg_fill,
+};
+
+static void __init ingress_init(void)
+{
+	rtnl_tc_register(&ingress_ops);
+}
+
+static void __exit ingress_exit(void)
+{
+	rtnl_tc_unregister(&ingress_ops);
+}
+
+/** @} */