4 * This code REQUIRES 2.1.15 or higher/ NET3.038
7 * This module is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
13 * NET/ROM 007 Tomi(OH2BNS) Created this file.
14 * Small change in nr_loopback_queue().
18 #include <linux/types.h>
19 #include <linux/socket.h>
20 #include <linux/timer.h>
22 #include <linux/skbuff.h>
23 #include <net/netrom.h>
24 #include <linux/init.h>
26 static struct sk_buff_head loopback_queue;
27 static struct timer_list loopback_timer;
29 static void nr_set_loopback_timer(void);
31 void nr_loopback_init(void)
33 skb_queue_head_init(&loopback_queue);
35 init_timer(&loopback_timer);
38 static int nr_loopback_running(void)
40 return timer_pending(&loopback_timer);
43 int nr_loopback_queue(struct sk_buff *skb)
47 if ((skbn = alloc_skb(skb->len, GFP_ATOMIC)) != NULL) {
48 memcpy(skb_put(skbn, skb->len), skb->data, skb->len);
49 skbn->h.raw = skbn->data;
51 skb_queue_tail(&loopback_queue, skbn);
53 if (!nr_loopback_running())
54 nr_set_loopback_timer();
61 static void nr_loopback_timer(unsigned long);
63 static void nr_set_loopback_timer(void)
65 del_timer(&loopback_timer);
67 loopback_timer.data = 0;
68 loopback_timer.function = &nr_loopback_timer;
69 loopback_timer.expires = jiffies + 10;
71 add_timer(&loopback_timer);
74 static void nr_loopback_timer(unsigned long param)
77 ax25_address *nr_dest;
78 struct net_device *dev;
80 if ((skb = skb_dequeue(&loopback_queue)) != NULL) {
81 nr_dest = (ax25_address *)(skb->data + 7);
83 dev = nr_dev_get(nr_dest);
85 if (dev == NULL || nr_rx_frame(skb, dev) == 0)
91 if (!skb_queue_empty(&loopback_queue) && !nr_loopback_running())
92 nr_set_loopback_timer();
96 void __exit nr_loopback_clear(void)
98 del_timer(&loopback_timer);
99 skb_queue_purge(&loopback_queue);