1/*
2 * DiffServ classname <-> DiffServ codepoint mapping functions.
3 *
4 * The latest list of the mappings can be found at:
5 * <http://www.iana.org/assignments/dscp-registry>
6 *
7 * This code is released under the GNU GPL v2, 1991
8 *
9 * Author: Iain Barnes
10 */
11
12#include <stdio.h>
13#include <string.h>
14#include <xtables.h>
15
16
17static const struct ds_class
18{
19	const char *name;
20	unsigned int dscp;
21} ds_classes[] =
22{
23	{ "CS0", 0x00 },
24	{ "CS1", 0x08 },
25	{ "CS2", 0x10 },
26	{ "CS3", 0x18 },
27	{ "CS4", 0x20 },
28	{ "CS5", 0x28 },
29	{ "CS6", 0x30 },
30	{ "CS7", 0x38 },
31	{ "BE", 0x00 },
32	{ "AF11", 0x0a },
33	{ "AF12", 0x0c },
34	{ "AF13", 0x0e },
35	{ "AF21", 0x12 },
36	{ "AF22", 0x14 },
37	{ "AF23", 0x16 },
38	{ "AF31", 0x1a },
39	{ "AF32", 0x1c },
40	{ "AF33", 0x1e },
41	{ "AF41", 0x22 },
42	{ "AF42", 0x24 },
43	{ "AF43", 0x26 },
44	{ "EF", 0x2e }
45};
46
47
48
49static unsigned int
50class_to_dscp(const char *name)
51{
52	unsigned int i;
53
54	for (i = 0; i < ARRAY_SIZE(ds_classes); i++) {
55		if (!strncasecmp(name, ds_classes[i].name,
56					strlen(ds_classes[i].name)))
57			return ds_classes[i].dscp;
58	}
59
60	xtables_error(PARAMETER_PROBLEM,
61			"Invalid DSCP value `%s'\n", name);
62}
63
64
65#if 0
66static const char *
67dscp_to_name(unsigned int dscp)
68{
69	int i;
70
71	for (i = 0; i < ARRAY_SIZE(ds_classes); ++i)
72		if (dscp == ds_classes[i].dscp)
73			return ds_classes[i].name;
74
75	xtables_error(PARAMETER_PROBLEM,
76			"Invalid DSCP value `%d'\n", dscp);
77}
78#endif
79
80