Subversion Repositories or1k

/*

 *      NET/ROM release 007

 *

 *      This code REQUIRES 2.1.15 or higher/ NET3.038

 *

 *      This module:

 *              This module 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; either version

 *              2 of the License, or (at your option) any later version.

 *

 *      History

 *      NET/ROM 007     Tomi(OH2BNS)    Created this file.

 *                                      Small change in nr_loopback_queue().

 *

 */

#include <linux/types.h>

#include <linux/socket.h>

#include <linux/timer.h>

#include <net/ax25.h>

#include <linux/skbuff.h>

#include <net/netrom.h>

#include <linux/init.h>

static struct sk_buff_head loopback_queue;

static struct timer_list loopback_timer;

static void nr_set_loopback_timer(void);

void nr_loopback_init(void)

{

        skb_queue_head_init(&loopback_queue);

        init_timer(&loopback_timer);

}

static int nr_loopback_running(void)

{

        return timer_pending(&loopback_timer);

}

int nr_loopback_queue(struct sk_buff *skb)

{

        struct sk_buff *skbn;

        if ((skbn = alloc_skb(skb->len, GFP_ATOMIC)) != NULL) {

                memcpy(skb_put(skbn, skb->len), skb->data, skb->len);

                skbn->h.raw = skbn->data;

                skb_queue_tail(&loopback_queue, skbn);

                if (!nr_loopback_running())

                        nr_set_loopback_timer();

        }

        kfree_skb(skb);

        return 1;

}

static void nr_loopback_timer(unsigned long);

static void nr_set_loopback_timer(void)

{

        del_timer(&loopback_timer);

        loopback_timer.data     = 0;

        loopback_timer.function = &nr_loopback_timer;

        loopback_timer.expires  = jiffies + 10;

        add_timer(&loopback_timer);

}

static void nr_loopback_timer(unsigned long param)

{

        struct sk_buff *skb;

        ax25_address *nr_dest;

        struct net_device *dev;

        if ((skb = skb_dequeue(&loopback_queue)) != NULL) {

                nr_dest = (ax25_address *)(skb->data + 7);

                dev = nr_dev_get(nr_dest);

                if (dev == NULL || nr_rx_frame(skb, dev) == 0)

                        kfree_skb(skb);

                if (dev != NULL)

                        dev_put(dev);

                if (!skb_queue_empty(&loopback_queue) && !nr_loopback_running())

                        nr_set_loopback_timer();

        }

}

void __exit nr_loopback_clear(void)

{

        del_timer(&loopback_timer);

        skb_queue_purge(&loopback_queue);

}