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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [net/] [rose/] [rose_loopback.c] - Blame information for rev 1775

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/*
 *      ROSE release 003
 *
 *      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
 *      ROSE 003        Jonathan(G4KLX) Created this file from nr_loopback.c.
 *
 */
 
#include <linux/config.h>
#if defined(CONFIG_ROSE) || defined(CONFIG_ROSE_MODULE)
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/timer.h>
#include <net/ax25.h>
#include <linux/skbuff.h>
#include <net/rose.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);
}
 
void 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, FREE_READ);
        }
}
 
static int rose_loopback_running(void)
{
        return (loopback_timer.prev != NULL || loopback_timer.next != NULL);
}
 
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, FREE_WRITE);
 
        if (skbn != NULL) {
                skbn->sk = (struct sock *)neigh;
                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 rose_neigh *rose_neigh;
        struct sock *sk;
        struct device *dev;
        rose_address *dest_addr;
        unsigned int lci;
        unsigned short frametype;
 
        while ((skb = skb_dequeue(&loopback_queue)) != NULL) {
                rose_neigh = (struct rose_neigh *)skb->sk;
                lci        = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);
                dest_addr = (rose_address *)(skb->data + 4);
 
                /* F1OAT : Patch the LCI for proper loopback operation */
                /* Work only if the system open less than 2048 VC !!! */
 
                lci = 4096 - lci;
                skb->data[0] = (lci >> 8) & 0x0F;
                skb->data[1] = lci & 0xFF;
 
                skb->sk = NULL;
 
                frametype = skb->data[2];
 
                if (frametype == ROSE_CALL_REQUEST) {
                        if ((dev = rose_dev_get(dest_addr)) == NULL) {
                                kfree_skb(skb, FREE_READ);
                                continue;
                        }
                        if (!rose_rx_call_request(skb, dev, rose_neigh, lci))
                                kfree_skb(skb, FREE_READ);
                }
                else {
                        if ((sk = rose_find_socket(lci, rose_neigh)) == NULL) {
                                kfree_skb(skb, FREE_READ);
                                continue;
                        }
                        skb->h.raw = skb->data;
 
                        if (rose_process_rx_frame(sk, skb) == 0)
                                kfree_skb(skb, FREE_READ);
                }
        }
}
 
#endif

Line No.	Rev	Author	Line
1	199	simons	`/*`
2			`* ROSE release 003`
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			`* ROSE 003 Jonathan(G4KLX) Created this file from nr_loopback.c.`
14			`*`
15			`*/`
16
17			`#include <linux/config.h>`
18			`#if defined(CONFIG_ROSE) \|\| defined(CONFIG_ROSE_MODULE)`
19			`#include <linux/types.h>`
20			`#include <linux/socket.h>`
21			`#include <linux/timer.h>`
22			`#include <net/ax25.h>`
23			`#include <linux/skbuff.h>`
24			`#include <net/rose.h>`
25
26			`static struct sk_buff_head loopback_queue;`
27			`static struct timer_list loopback_timer;`
28
29			`static void rose_set_loopback_timer(void);`
30
31			`void rose_loopback_init(void)`
32			`{`
33			`skb_queue_head_init(&loopback_queue);`
34
35			`init_timer(&loopback_timer);`
36			`}`
37
38			`void rose_loopback_clear(void)`
39			`{`
40			`struct sk_buff *skb;`
41
42			`del_timer(&loopback_timer);`
43
44			`while ((skb = skb_dequeue(&loopback_queue)) != NULL) {`
45			`skb->sk = NULL;`
46			`kfree_skb(skb, FREE_READ);`
47			`}`
48			`}`
49
50			`static int rose_loopback_running(void)`
51			`{`
52			`return (loopback_timer.prev != NULL \|\| loopback_timer.next != NULL);`
53			`}`
54
55			`int rose_loopback_queue(struct sk_buff skb, struct rose_neigh neigh)`
56			`{`
57			`struct sk_buff *skbn;`
58
59			`skbn = skb_clone(skb, GFP_ATOMIC);`
60
61			`kfree_skb(skb, FREE_WRITE);`
62
63			`if (skbn != NULL) {`
64			`skbn->sk = (struct sock *)neigh;`
65			`skb_queue_tail(&loopback_queue, skbn);`
66			`}`
67
68			`if (!rose_loopback_running())`
69			`{`
70			`rose_set_loopback_timer();`
71			`}`
72			`return 1;`
73			`}`
74
75			`static void rose_loopback_timer(unsigned long);`
76
77			`static void rose_set_loopback_timer(void)`
78			`{`
79			`del_timer(&loopback_timer);`
80
81			`loopback_timer.data = 0;`
82			`loopback_timer.function = &rose_loopback_timer;`
83			`loopback_timer.expires = jiffies + 10;`
84
85			`add_timer(&loopback_timer);`
86			`}`
87
88			`static void rose_loopback_timer(unsigned long param)`
89			`{`
90			`struct sk_buff *skb;`
91			`struct rose_neigh *rose_neigh;`
92			`struct sock *sk;`
93			`struct device *dev;`
94			`rose_address *dest_addr;`
95			`unsigned int lci;`
96			`unsigned short frametype;`
97
98			`while ((skb = skb_dequeue(&loopback_queue)) != NULL) {`
99			`rose_neigh = (struct rose_neigh *)skb->sk;`
100			`lci = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);`
101			`dest_addr = (rose_address *)(skb->data + 4);`
102
103			`/* F1OAT : Patch the LCI for proper loopback operation */`
104			`/* Work only if the system open less than 2048 VC !!! */`
105
106			`lci = 4096 - lci;`
107			`skb->data[0] = (lci >> 8) & 0x0F;`
108			`skb->data[1] = lci & 0xFF;`
109
110			`skb->sk = NULL;`
111
112			`frametype = skb->data[2];`
113
114			`if (frametype == ROSE_CALL_REQUEST) {`
115			`if ((dev = rose_dev_get(dest_addr)) == NULL) {`
116			`kfree_skb(skb, FREE_READ);`
117			`continue;`
118			`}`
119			`if (!rose_rx_call_request(skb, dev, rose_neigh, lci))`
120			`kfree_skb(skb, FREE_READ);`
121			`}`
122			`else {`
123			`if ((sk = rose_find_socket(lci, rose_neigh)) == NULL) {`
124			`kfree_skb(skb, FREE_READ);`
125			`continue;`
126			`}`
127			`skb->h.raw = skb->data;`
128
129			`if (rose_process_rx_frame(sk, skb) == 0)`
130			`kfree_skb(skb, FREE_READ);`
131			`}`
132			`}`
133			`}`
134
135			`#endif`

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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [net/] [rose/] [rose_loopback.c] - Blame information for rev 1775