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[/] [test_project/] [trunk/] [linux_sd_driver/] [net/] [rose/] [rose_loopback.c] - Blame information for rev 79

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/*
 * This program 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.
 *
 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
 */
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/timer.h>
#include <net/ax25.h>
#include <linux/skbuff.h>
#include <net/rose.h>
#include <linux/init.h>
 
static struct sk_buff_head loopback_queue;
static struct timer_list loopback_timer;
 
static void rose_set_loopback_timer(void);
 
void rose_loopback_init(void)
{
        skb_queue_head_init(&loopback_queue);
 
        init_timer(&loopback_timer);
}
 
static int rose_loopback_running(void)
{
        return timer_pending(&loopback_timer);
}
 
int rose_loopback_queue(struct sk_buff *skb, struct rose_neigh *neigh)
{
        struct sk_buff *skbn;
 
        skbn = skb_clone(skb, GFP_ATOMIC);
 
        kfree_skb(skb);
 
        if (skbn != NULL) {
                skb_queue_tail(&loopback_queue, skbn);
 
                if (!rose_loopback_running())
                        rose_set_loopback_timer();
        }
 
        return 1;
}
 
static void rose_loopback_timer(unsigned long);
 
static void rose_set_loopback_timer(void)
{
        del_timer(&loopback_timer);
 
        loopback_timer.data     = 0;
        loopback_timer.function = &rose_loopback_timer;
        loopback_timer.expires  = jiffies + 10;
 
        add_timer(&loopback_timer);
}
 
static void rose_loopback_timer(unsigned long param)
{
        struct sk_buff *skb;
        struct net_device *dev;
        rose_address *dest;
        struct sock *sk;
        unsigned short frametype;
        unsigned int lci_i, lci_o;
 
        while ((skb = skb_dequeue(&loopback_queue)) != NULL) {
                lci_i     = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);
                frametype = skb->data[2];
                dest      = (rose_address *)(skb->data + 4);
                lci_o     = 0xFFF - lci_i;
 
                skb_reset_transport_header(skb);
 
                sk = rose_find_socket(lci_o, rose_loopback_neigh);
                if (sk) {
                        if (rose_process_rx_frame(sk, skb) == 0)
                                kfree_skb(skb);
                        continue;
                }
 
                if (frametype == ROSE_CALL_REQUEST) {
                        if ((dev = rose_dev_get(dest)) != NULL) {
                                if (rose_rx_call_request(skb, dev, rose_loopback_neigh, lci_o) == 0)
                                        kfree_skb(skb);
                        } else {
                                kfree_skb(skb);
                        }
                } else {
                        kfree_skb(skb);
                }
        }
}
 
void __exit rose_loopback_clear(void)
{
        struct sk_buff *skb;
 
        del_timer(&loopback_timer);
 
        while ((skb = skb_dequeue(&loopback_queue)) != NULL) {
                skb->sk = NULL;
                kfree_skb(skb);
        }
}

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* This program is free software; you can redistribute it and/or modify`
3			`* it under the terms of the GNU General Public License as published by`
4			`* the Free Software Foundation; either version 2 of the License, or`
5			`* (at your option) any later version.`
6			`*`
7			`* Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)`
8			`*/`
9			`#include <linux/types.h>`
10			`#include <linux/socket.h>`
11			`#include <linux/timer.h>`
12			`#include <net/ax25.h>`
13			`#include <linux/skbuff.h>`
14			`#include <net/rose.h>`
15			`#include <linux/init.h>`
16
17			`static struct sk_buff_head loopback_queue;`
18			`static struct timer_list loopback_timer;`
19
20			`static void rose_set_loopback_timer(void);`
21
22			`void rose_loopback_init(void)`
23			`{`
24			`skb_queue_head_init(&loopback_queue);`
25
26			`init_timer(&loopback_timer);`
27			`}`
28
29			`static int rose_loopback_running(void)`
30			`{`
31			`return timer_pending(&loopback_timer);`
32			`}`
33
34			`int rose_loopback_queue(struct sk_buff skb, struct rose_neigh neigh)`
35			`{`
36			`struct sk_buff *skbn;`
37
38			`skbn = skb_clone(skb, GFP_ATOMIC);`
39
40			`kfree_skb(skb);`
41
42			`if (skbn != NULL) {`
43			`skb_queue_tail(&loopback_queue, skbn);`
44
45			`if (!rose_loopback_running())`
46			`rose_set_loopback_timer();`
47			`}`
48
49			`return 1;`
50			`}`
51
52			`static void rose_loopback_timer(unsigned long);`
53
54			`static void rose_set_loopback_timer(void)`
55			`{`
56			`del_timer(&loopback_timer);`
57
58			`loopback_timer.data = 0;`
59			`loopback_timer.function = &rose_loopback_timer;`
60			`loopback_timer.expires = jiffies + 10;`
61
62			`add_timer(&loopback_timer);`
63			`}`
64
65			`static void rose_loopback_timer(unsigned long param)`
66			`{`
67			`struct sk_buff *skb;`
68			`struct net_device *dev;`
69			`rose_address *dest;`
70			`struct sock *sk;`
71			`unsigned short frametype;`
72			`unsigned int lci_i, lci_o;`
73
74			`while ((skb = skb_dequeue(&loopback_queue)) != NULL) {`
75			`lci_i = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);`
76			`frametype = skb->data[2];`
77			`dest = (rose_address *)(skb->data + 4);`
78			`lci_o = 0xFFF - lci_i;`
79
80			`skb_reset_transport_header(skb);`
81
82			`sk = rose_find_socket(lci_o, rose_loopback_neigh);`
83			`if (sk) {`
84			`if (rose_process_rx_frame(sk, skb) == 0)`
85			`kfree_skb(skb);`
86			`continue;`
87			`}`
88
89			`if (frametype == ROSE_CALL_REQUEST) {`
90			`if ((dev = rose_dev_get(dest)) != NULL) {`
91			`if (rose_rx_call_request(skb, dev, rose_loopback_neigh, lci_o) == 0)`
92			`kfree_skb(skb);`
93			`} else {`
94			`kfree_skb(skb);`
95			`}`
96			`} else {`
97			`kfree_skb(skb);`
98			`}`
99			`}`
100			`}`
101
102			`void __exit rose_loopback_clear(void)`
103			`{`
104			`struct sk_buff *skb;`
105
106			`del_timer(&loopback_timer);`
107
108			`while ((skb = skb_dequeue(&loopback_queue)) != NULL) {`
109			`skb->sk = NULL;`
110			`kfree_skb(skb);`
111			`}`
112			`}`

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[/] [test_project/] [trunk/] [linux_sd_driver/] [net/] [rose/] [rose_loopback.c] - Blame information for rev 79