File: nl-cls-add.c

package info (click to toggle)
libnl3 3.4.0-1
  • links: PTS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 6,120 kB
  • sloc: ansic: 57,494; sh: 4,447; python: 3,702; makefile: 888; yacc: 478; cpp: 454; lex: 210
file content (165 lines) | stat: -rw-r--r-- 4,710 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
/*
 * src/nl-cls-add.c     Add classifier
 *
 *	This library 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 version 2 of the License.
 *
 * Copyright (c) 2003-2011 Thomas Graf <tgraf@suug.ch>
 */

#include <netlink/cli/utils.h>
#include <netlink/cli/tc.h>
#include <netlink/cli/cls.h>
#include <netlink/cli/link.h>

#include <netlink-private/route/tc-api.h>

#include <linux/netlink.h>

static int quiet = 0;

static void print_usage(void)
{
	printf(
"Usage: nl-cls-add [OPTIONS]... classifier [CONFIGURATION]...\n"
"\n"
"OPTIONS\n"
" -q, --quiet               Do not print informal notifications.\n"
" -h, --help                Show this help text.\n"
" -v, --version             Show versioning information.\n"
"     --update              Update classifier if it exists.\n"
"     --update-only         Only update classifier, never create it.\n"
" -d, --dev=DEV             Network device the classifier should be attached to.\n"
" -i, --id=ID               ID of new classifier (default: auto-generated)\n"
" -p, --parent=ID           ID of parent { root | ingress | class-ID }\n"
"     --proto=PROTO         Protocol to match (default: all)\n"
"     --prio=PRIO           Priority (default: 0)\n"
"     --mtu=SIZE            Overwrite MTU (default: MTU of network device)\n"
"     --mpu=SIZE            Minimum packet size on the link (default: 0).\n"
"     --overhead=SIZE       Overhead in bytes per packet (default: 0).\n"
"     --linktype=TYPE       Overwrite linktype (default: type of network device)\n"
"\n"
"CONFIGURATION\n"
" -h, --help                Show help text of classifier specific options.\n"
"\n"
"EXAMPLE\n"
"   $ nl-cls-add --dev=eth1 --parent=q_root basic --target c_www\n"
"\n"
	);
	exit(0);
}

int main(int argc, char *argv[])
{
	struct nl_sock *sock;
	struct rtnl_cls *cls;
	struct rtnl_tc *tc;
	struct nl_cache *link_cache;
	struct nl_dump_params dp = {
		.dp_type = NL_DUMP_DETAILS,
		.dp_fd = stdout,
	};
	struct nl_cli_tc_module *tm;
	struct rtnl_tc_ops *ops;
	int err, flags = NLM_F_CREATE | NLM_F_EXCL;
	char *kind, *id = NULL;

	sock = nl_cli_alloc_socket();
	nl_cli_connect(sock, NETLINK_ROUTE);

	link_cache = nl_cli_link_alloc_cache(sock);

	cls = nl_cli_cls_alloc();
	tc = (struct rtnl_tc *) cls;

	for (;;) {
		int c, optidx = 0;
		enum {
			ARG_UPDATE = 257,
			ARG_UPDATE_ONLY = 258,
			ARG_MTU,
			ARG_MPU,
			ARG_OVERHEAD,
			ARG_LINKTYPE,
			ARG_PROTO,
			ARG_PRIO,
		};
		static struct option long_opts[] = {
			{ "quiet", 0, 0, 'q' },
			{ "help", 0, 0, 'h' },
			{ "version", 0, 0, 'v' },
			{ "dev", 1, 0, 'd' },
			{ "parent", 1, 0, 'p' },
			{ "id", 1, 0, 'i' },
			{ "proto", 1, 0, ARG_PROTO },
			{ "prio", 1, 0, ARG_PRIO },
			{ "update", 0, 0, ARG_UPDATE },
			{ "update-only", 0, 0, ARG_UPDATE_ONLY },
			{ "mtu", 1, 0, ARG_MTU },
			{ "mpu", 1, 0, ARG_MPU },
			{ "overhead", 1, 0, ARG_OVERHEAD },
			{ "linktype", 1, 0, ARG_LINKTYPE },
			{ 0, 0, 0, 0 }
		};

		c = getopt_long(argc, argv, "+qhvd:p:i:",
				long_opts, &optidx);
		if (c == -1)
			break;

		switch (c) {
		case 'q': quiet = 1; break;
		case 'h': print_usage(); break;
		case 'v': nl_cli_print_version(); break;
		case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;
		case 'p': nl_cli_tc_parse_parent(tc, optarg); break;
		case 'i': id = strdup(optarg); break;
		case ARG_UPDATE: flags = NLM_F_CREATE; break;
		case ARG_UPDATE_ONLY: flags = 0; break;
		case ARG_MTU: nl_cli_tc_parse_mtu(tc, optarg); break;
		case ARG_MPU: nl_cli_tc_parse_mpu(tc, optarg); break;
		case ARG_OVERHEAD: nl_cli_tc_parse_overhead(tc, optarg); break;
		case ARG_LINKTYPE: nl_cli_tc_parse_linktype(tc, optarg); break;
		case ARG_PROTO: nl_cli_cls_parse_proto(cls, optarg); break;
		case ARG_PRIO:
			rtnl_cls_set_prio(cls, nl_cli_parse_u32(optarg));
			break;
		}
	}

	if (optind >= argc)
		print_usage();

	if (!rtnl_tc_get_ifindex(tc))
		nl_cli_fatal(EINVAL, "You must specify a network device (--dev=XXX)");

	if (!rtnl_tc_get_parent(tc))
		nl_cli_fatal(EINVAL, "You must specify a parent (--parent=XXX)");

	if (id) {
		nl_cli_tc_parse_handle(tc, id, 1);
		free(id);
	}

	kind = argv[optind++];
	rtnl_tc_set_kind(tc, kind);

	if (!(ops = rtnl_tc_get_ops(tc)))
		nl_cli_fatal(ENOENT, "Unknown classifier \"%s\".", kind);

	if (!(tm = nl_cli_tc_lookup(ops)))
		nl_cli_fatal(ENOTSUP, "Classifier type \"%s\" not supported.", kind);

	tm->tm_parse_argv(tc, argc, argv);

	if (!quiet) {
		printf("Adding ");
		nl_object_dump(OBJ_CAST(cls), &dp);
	}

	if ((err = rtnl_cls_add(sock, cls, flags)) < 0)
		nl_cli_fatal(EINVAL, "Unable to add classifier: %s", nl_geterror(err));

	return 0;
}