Big routing code rework (API/ABI BREAK!)

Adds all missing routing attributes and brings the routing
related code to a working state. In the process the API
was broken several times with the justification that nobody
is using this code yet.

The changes include new example code which is also a prototype
for how plain CLI tools could look like to control routes.

1 files changed, 118 insertions, 0 deletions

diff --git a/src/nl-route-list.c b/src/nl-route-list.c
new file mode 100644
index 0000000..4f70ff7
--- /dev/null
+++ b/src/nl-route-list.c
@@ -0,0 +1,118 @@
+/*
+ * src/nl-route-list.c     List route attributes
+ *
+ *	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) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#include "route-utils.h"
+
+static void print_usage(void)
+{
+	printf(
+	"Usage: nl-route-list [OPTION]...\n"
+	"\n"
+	"Options\n"
+	" -f, --family=FAMILY	address family\n"
+	" -d, --dst=ADDR        destination prefix, e.g. 10.10.0.0/16\n"
+	" -n, --nh=NEXTHOP      nexthop configuration:\n"
+	"                         dev=DEV         route via device\n"
+	"                         weight=WEIGHT   weight of nexthop\n"
+	"                         flags=FLAGS\n"
+	"                         via=GATEWAY     route via other node\n"
+	"                         realms=REALMS\n"
+	"                         e.g. dev=eth0,via=192.168.1.12\n"
+	" -s, --src=ADDR        source prefix\n"
+	" -i, --iif=DEV         incomming interface\n"
+	" -P, --pref-src=ADDR   preferred source address\n"
+	" -t, --table=TABLE     routing table\n"
+	" -m, --metric=OPTS     metrics\n"
+	" -p, --prio=NUM        priotity\n"
+	" -S, --scope=SCOPE     scope\n"
+	" -x, --proto=PROTO     protocol\n"
+	" -T, --type=TYPE       routing type\n"
+	" -D, --dumptype=TYPE   { brief | detailed | stats | env }\n"
+	" -h, --help            show this help\n");
+	exit(1);
+}
+
+int main(int argc, char *argv[])
+{
+	struct nl_handle *nlh;
+	struct nl_cache *link_cache, *route_cache;
+	struct rtnl_route *route;
+	struct nl_dump_params params = {
+		.dp_fd = stdout,
+		.dp_type = NL_DUMP_BRIEF
+	};
+	int err = 1;
+
+	nlh = nltool_alloc_handle();
+	nltool_connect(nlh, NETLINK_ROUTE);
+	link_cache = nltool_alloc_link_cache(nlh);
+	route_cache = nltool_alloc_route_cache(nlh);
+
+	route = rtnl_route_alloc();
+	if (!route)
+		goto errout;
+
+	for (;;) {
+		int c, optidx = 0;
+		static struct option long_opts[] = {
+			{ "family", 1, 0, 'f' },
+			{ "dst", 1, 0, 'd' },
+			{ "src", 1, 0, 's' },
+			{ "iif", 1, 0, 'i' },
+			{ "nh", 1, 0, 'n' },
+			{ "pref-src", 1, 0, 'P' },
+			{ "table", 1, 0, 't' },
+			{ "metric", 1, 0, 'm' },
+			{ "prio", 1, 0, 'p' },
+			{ "scope", 1, 0, 'S' },
+			{ "proto", 1, 0, 'x' },
+			{ "type", 1, 0, 'T' },
+			{ "dumptype", 1, 0, 'D' },
+			{ "help", 0, 0, 'h' },
+			{ 0, 0, 0, 0 }
+		};
+
+		c = getopt_long(argc, argv, "f:d:s:i:n:P:t:m:p:S:x:T:D:h",
+				long_opts, &optidx);
+		if (c == -1)
+			break;
+
+		switch (c) {
+		case 'f': parse_family(route, optarg); break;
+		case 'd': parse_dst(route, optarg); break;
+		case 's': parse_src(route, optarg); break;
+		case 'i': parse_iif(route, optarg, link_cache); break;
+		case 'n': parse_nexthop(route, optarg, link_cache); break;
+		case 'P': parse_pref_src(route, optarg); break;
+		case 't': parse_table(route, optarg); break;
+		case 'm': parse_metric(route, optarg); break;
+		case 'p': parse_prio(route, optarg); break;
+		case 'S': parse_scope(route, optarg); break;
+		case 'x': parse_protocol(route, optarg); break;
+		case 'T': parse_type(route, optarg); break;
+		case 'D': params.dp_type = nltool_parse_dumptype(optarg); break;
+		case 'h': print_usage(); break;
+		}
+	}
+
+	nl_cache_dump_filter(route_cache, &params, OBJ_CAST(route));
+
+	err = 0;
+
+	rtnl_route_put(route);
+errout:
+	nl_cache_free(route_cache);
+	nl_cache_free(link_cache);
+	nl_close(nlh);
+	nl_handle_destroy(nlh);
+
+	return err;
+}