1 // SPDX-License-Identifier: GPL-2.0-or-later <<
2 /* 1 /*
>> 2 * NET/ROM release 007
>> 3 *
>> 4 * This code REQUIRES 2.1.15 or higher/ NET3.038
>> 5 *
>> 6 * This module:
>> 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.
>> 11 *
>> 12 * History
>> 13 * NET/ROM 007 Tomi(OH2BNS) Created this file.
>> 14 * Small change in nr_loopback_queue().
3 * 15 *
4 * Copyright Tomi Manninen OH2BNS (oh2bns@sral <<
5 */ 16 */
>> 17
6 #include <linux/types.h> 18 #include <linux/types.h>
7 #include <linux/slab.h> <<
8 #include <linux/socket.h> 19 #include <linux/socket.h>
9 #include <linux/timer.h> 20 #include <linux/timer.h>
10 #include <net/ax25.h> 21 #include <net/ax25.h>
11 #include <linux/skbuff.h> 22 #include <linux/skbuff.h>
12 #include <net/netrom.h> 23 #include <net/netrom.h>
13 #include <linux/init.h> 24 #include <linux/init.h>
14 25
15 static void nr_loopback_timer(struct timer_lis <<
16 <<
17 static struct sk_buff_head loopback_queue; 26 static struct sk_buff_head loopback_queue;
18 static DEFINE_TIMER(loopback_timer, nr_loopbac !! 27 static struct timer_list loopback_timer;
>> 28
>> 29 static void nr_set_loopback_timer(void);
19 30
20 void __init nr_loopback_init(void) !! 31 void nr_loopback_init(void)
21 { 32 {
22 skb_queue_head_init(&loopback_queue); 33 skb_queue_head_init(&loopback_queue);
>> 34
>> 35 init_timer(&loopback_timer);
23 } 36 }
24 37
25 static inline int nr_loopback_running(void) !! 38 static int nr_loopback_running(void)
26 { 39 {
27 return timer_pending(&loopback_timer); 40 return timer_pending(&loopback_timer);
28 } 41 }
29 42
30 int nr_loopback_queue(struct sk_buff *skb) 43 int nr_loopback_queue(struct sk_buff *skb)
31 { 44 {
32 struct sk_buff *skbn; 45 struct sk_buff *skbn;
33 46
34 if ((skbn = alloc_skb(skb->len, GFP_AT 47 if ((skbn = alloc_skb(skb->len, GFP_ATOMIC)) != NULL) {
35 skb_copy_from_linear_data(skb, !! 48 memcpy(skb_put(skbn, skb->len), skb->data, skb->len);
36 skb_reset_transport_header(skb !! 49 skbn->h.raw = skbn->data;
37 50
38 skb_queue_tail(&loopback_queue 51 skb_queue_tail(&loopback_queue, skbn);
39 52
40 if (!nr_loopback_running()) 53 if (!nr_loopback_running())
41 mod_timer(&loopback_ti !! 54 nr_set_loopback_timer();
42 } 55 }
43 56
44 kfree_skb(skb); 57 kfree_skb(skb);
45 return 1; 58 return 1;
46 } 59 }
47 60
48 static void nr_loopback_timer(struct timer_lis !! 61 static void nr_loopback_timer(unsigned long);
>> 62
>> 63 static void nr_set_loopback_timer(void)
>> 64 {
>> 65 del_timer(&loopback_timer);
>> 66
>> 67 loopback_timer.data = 0;
>> 68 loopback_timer.function = &nr_loopback_timer;
>> 69 loopback_timer.expires = jiffies + 10;
>> 70
>> 71 add_timer(&loopback_timer);
>> 72 }
>> 73
>> 74 static void nr_loopback_timer(unsigned long param)
49 { 75 {
50 struct sk_buff *skb; 76 struct sk_buff *skb;
51 ax25_address *nr_dest; 77 ax25_address *nr_dest;
52 struct net_device *dev; 78 struct net_device *dev;
53 79
54 if ((skb = skb_dequeue(&loopback_queue 80 if ((skb = skb_dequeue(&loopback_queue)) != NULL) {
55 nr_dest = (ax25_address *)(skb 81 nr_dest = (ax25_address *)(skb->data + 7);
56 82
57 dev = nr_dev_get(nr_dest); 83 dev = nr_dev_get(nr_dest);
58 84
59 if (dev == NULL || nr_rx_frame 85 if (dev == NULL || nr_rx_frame(skb, dev) == 0)
60 kfree_skb(skb); 86 kfree_skb(skb);
61 87
62 dev_put(dev); !! 88 if (dev != NULL)
>> 89 dev_put(dev);
63 90
64 if (!skb_queue_empty(&loopback 91 if (!skb_queue_empty(&loopback_queue) && !nr_loopback_running())
65 mod_timer(&loopback_ti !! 92 nr_set_loopback_timer();
66 } 93 }
67 } 94 }
68 95
69 void nr_loopback_clear(void) !! 96 void __exit nr_loopback_clear(void)
70 { 97 {
71 del_timer_sync(&loopback_timer); !! 98 del_timer(&loopback_timer);
72 skb_queue_purge(&loopback_queue); 99 skb_queue_purge(&loopback_queue);
73 } 100 }
74 101
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