/*

 * DiffServ classname <-> DiffServ codepoint mapping functions.

 *

 * The latest list of the mappings can be found at:

 * <http://www.iana.org/assignments/dscp-registry>

 *

 * This code is released under the GNU GPL v2, 1991

 *

 * Author: Iain Barnes

 */

#include <stdio.h>

#include <string.h>

#include <xtables.h>

static const struct ds_class

{

	const char *name;

	unsigned int dscp;

} ds_classes[] =

{

	{ "CS0", 0x00 },

	{ "CS1", 0x08 },

	{ "CS2", 0x10 },

	{ "CS3", 0x18 },

	{ "CS4", 0x20 },

	{ "CS5", 0x28 },

	{ "CS6", 0x30 },

	{ "CS7", 0x38 },

	{ "BE", 0x00 },

	{ "AF11", 0x0a },

	{ "AF12", 0x0c },

	{ "AF13", 0x0e },

	{ "AF21", 0x12 },

	{ "AF22", 0x14 },

	{ "AF23", 0x16 },

	{ "AF31", 0x1a },

	{ "AF32", 0x1c },

	{ "AF33", 0x1e },

	{ "AF41", 0x22 },

	{ "AF42", 0x24 },

	{ "AF43", 0x26 },

	{ "EF", 0x2e }

};

static unsigned int

class_to_dscp(const char *name)

{

	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(ds_classes); i++) {

		if (!strncasecmp(name, ds_classes[i].name,

					strlen(ds_classes[i].name)))

			return ds_classes[i].dscp;

	}

	xtables_error(PARAMETER_PROBLEM,

			"Invalid DSCP value `%s'\n", name);

}

#if 0

static const char *

dscp_to_name(unsigned int dscp)

{

	int i;

	for (i = 0; i < ARRAY_SIZE(ds_classes); ++i) 

		if (dscp == ds_classes[i].dscp)

			return ds_classes[i].name;

	xtables_error(PARAMETER_PROBLEM,

			"Invalid DSCP value `%d'\n", dscp);

}

#endif