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
17 static 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
49 static unsigned int
class_to_dscp(const char * name)50 class_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
66 static const char *
67 dscp_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