patch-2.1.96 linux/net/netrom/nr_loopback.c

• Lines: 108
• Date: Sat Apr 11 17:18:16 1998
• Orig file: v2.1.95/linux/net/netrom/nr_loopback.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.95/linux/net/netrom/nr_loopback.c linux/net/netrom/nr_loopback.c
@@ -0,0 +1,107 @@
+/*
+ *	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.
+ *
+ */
+
+#include <linux/config.h>
+#if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE)
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/timer.h>
+#include <net/ax25.h>
+#include <linux/skbuff.h>
+#include <net/netrom.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 (loopback_timer.prev != NULL || loopback_timer.next != NULL);
+}
+
+int nr_loopback_queue(struct sk_buff *skb)
+{
+	struct sk_buff *skbn;
+
+	skbn = skb_clone(skb, GFP_ATOMIC);
+
+	kfree_skb(skb);
+
+	if (skbn != NULL) {
+		skb_queue_tail(&loopback_queue, skbn);
+
+		if (!nr_loopback_running())
+			nr_set_loopback_timer();
+	}
+
+	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 device *dev;
+
+	while ((skb = skb_dequeue(&loopback_queue)) != NULL) {
+		nr_dest = (ax25_address *)(skb->data + 7);
+
+		if ((dev = nr_dev_get(nr_dest)) == NULL) {
+			kfree_skb(skb);
+			continue;
+		}
+
+		if (nr_rx_frame(skb, dev) == 0)
+			kfree_skb(skb);
+	}
+}
+
+#ifdef MODULE
+
+void nr_loopback_clear(void)
+{
+	struct sk_buff *skb;
+
+	del_timer(&loopback_timer);
+
+	while ((skb = skb_dequeue(&loopback_queue)) != NULL)
+		kfree_skb(skb);
+}
+
+#endif
+
+#endif