1/*
2 * src/nl-qdisc-add.c     Add Queueing Discipline
3 *
4 *	This library is free software; you can redistribute it and/or
5 *	modify it under the terms of the GNU Lesser General Public
6 *	License as published by the Free Software Foundation version 2.1
7 *	of the License.
8 *
9 * Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>
10 */
11
12#include <netlink/cli/utils.h>
13#include <netlink/cli/tc.h>
14#include <netlink/cli/qdisc.h>
15#include <netlink/cli/link.h>
16
17#include <netlink-private/route/tc-api.h>
18
19static int quiet = 0;
20
21static void print_usage(void)
22{
23	printf(
24"Usage: nl-qdisc-add [OPTIONS]... QDISC [CONFIGURATION]...\n"
25"\n"
26"OPTIONS\n"
27" -q, --quiet               Do not print informal notifications.\n"
28" -h, --help                Show this help text.\n"
29" -v, --version             Show versioning information.\n"
30"     --update              Update qdisc if it exists.\n"
31"     --replace             Replace or update qdisc if it exists.\n"
32"     --update-only         Only update qdisc, never create it.\n"
33"     --replace-only        Only replace or update qdisc, never create it.\n"
34" -d, --dev=DEV             Network device the qdisc should be attached to.\n"
35" -i, --id=ID               ID of new qdisc (default: auto-generated)r\n"
36" -p, --parent=ID           ID of parent { root | ingress | QDISC-ID }\n"
37"\n"
38"CONFIGURATION\n"
39" -h, --help                Show help text of qdisc specific options.\n"
40"\n"
41"EXAMPLE\n"
42"   $ nl-qdisc-add --dev=eth1 --parent=root htb --rate=100mbit\n"
43"\n"
44	);
45	exit(0);
46}
47
48int main(int argc, char *argv[])
49{
50	struct nl_sock *sock;
51	struct rtnl_qdisc *qdisc;
52	struct rtnl_tc *tc;
53	struct nl_cache *link_cache;
54	struct nl_dump_params dp = {
55		.dp_type = NL_DUMP_DETAILS,
56		.dp_fd = stdout,
57	};
58	struct nl_cli_tc_module *tm;
59	struct rtnl_tc_ops *ops;
60	int err, flags = NLM_F_CREATE | NLM_F_EXCL;
61	char *kind, *id = NULL;
62
63	sock = nl_cli_alloc_socket();
64	nl_cli_connect(sock, NETLINK_ROUTE);
65
66	link_cache = nl_cli_link_alloc_cache(sock);
67
68 	qdisc = nl_cli_qdisc_alloc();
69	tc = (struct rtnl_tc *) qdisc;
70
71	for (;;) {
72		int c, optidx = 0;
73		enum {
74			ARG_REPLACE = 257,
75			ARG_UPDATE = 258,
76			ARG_REPLACE_ONLY,
77			ARG_UPDATE_ONLY,
78		};
79		static struct option long_opts[] = {
80			{ "quiet", 0, 0, 'q' },
81			{ "help", 0, 0, 'h' },
82			{ "version", 0, 0, 'v' },
83			{ "dev", 1, 0, 'd' },
84			{ "parent", 1, 0, 'p' },
85			{ "id", 1, 0, 'i' },
86			{ "replace", 0, 0, ARG_REPLACE },
87			{ "update", 0, 0, ARG_UPDATE },
88			{ "replace-only", 0, 0, ARG_REPLACE_ONLY },
89			{ "update-only", 0, 0, ARG_UPDATE_ONLY },
90			{ 0, 0, 0, 0 }
91		};
92
93		c = getopt_long(argc, argv, "+qhvd:p:i:",
94				long_opts, &optidx);
95		if (c == -1)
96			break;
97
98		switch (c) {
99		case 'q': quiet = 1; break;
100		case 'h': print_usage(); break;
101		case 'v': nl_cli_print_version(); break;
102		case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;
103		case 'p': nl_cli_tc_parse_parent(tc, optarg); break;
104		case 'i': id = strdup(optarg); break;
105		case ARG_UPDATE: flags = NLM_F_CREATE; break;
106		case ARG_REPLACE: flags = NLM_F_CREATE | NLM_F_REPLACE; break;
107		case ARG_UPDATE_ONLY: flags = 0; break;
108		case ARG_REPLACE_ONLY: flags = NLM_F_REPLACE; break;
109		}
110 	}
111
112	if (optind >= argc)
113		print_usage();
114
115	if (!rtnl_tc_get_ifindex(tc))
116		nl_cli_fatal(EINVAL, "You must specify a network device (--dev=XXX)");
117
118	if (!rtnl_tc_get_parent(tc))
119		nl_cli_fatal(EINVAL, "You must specify a parent");
120
121	if (id) {
122		nl_cli_tc_parse_handle(tc, id, 1);
123		free(id);
124	}
125
126	kind = argv[optind++];
127	rtnl_tc_set_kind(tc, kind);
128
129	if (!(ops = rtnl_tc_get_ops(tc)))
130		nl_cli_fatal(ENOENT, "Unknown qdisc \"%s\"", kind);
131
132	if (!(tm = nl_cli_tc_lookup(ops)))
133		nl_cli_fatal(ENOTSUP, "Qdisc type \"%s\" not supported.", kind);
134
135	tm->tm_parse_argv(tc, argc, argv);
136
137	if (!quiet) {
138		printf("Adding ");
139		nl_object_dump(OBJ_CAST(qdisc), &dp);
140 	}
141
142	if ((err = rtnl_qdisc_add(sock, qdisc, flags)) < 0)
143		nl_cli_fatal(EINVAL, "Unable to add qdisc: %s", nl_geterror(err));
144
145	return 0;
146}
147