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/*
* mod_order.c
*
* Copyright (c) 2001 Dug Song <dugsong@monkey.org>
*
* $Id: mod_order.c,v 1.9 2002/04/07 22:55:20 dugsong Exp $
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mod.h"
#define ORDER_RANDOM 1
#define ORDER_REVERSE 2
struct order_data {
rand_t *rnd;
int type;
};
void *
order_close(void *d)
{
struct order_data *data = (struct order_data *)d;
if (data != NULL) {
rand_close(data->rnd);
free(data);
}
return (NULL);
}
void *
order_open(int argc, char *argv[])
{
struct order_data *data;
if (argc < 2)
return (NULL);
if ((data = malloc(sizeof(*data))) == NULL)
return (NULL);
data->rnd = rand_open();
if (strcasecmp(argv[1], "random") == 0) {
data->type = ORDER_RANDOM;
} else if (strcasecmp(argv[1], "reverse") == 0) {
data->type = ORDER_REVERSE;
} else
return (order_close(data));
return (data);
}
int
order_apply(void *d, struct pktq *pktq)
{
struct order_data *data = (struct order_data *)d;
if (data->type == ORDER_RANDOM)
pktq_shuffle(data->rnd, pktq);
else
pktq_reverse(pktq);
return (0);
}
struct mod mod_order = {
"order", /* name */
"order random|reverse", /* usage */
order_open, /* open */
order_apply, /* apply */
order_close /* close */
};
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