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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [net/] [atm/] [raw.c] - Blame information for rev 1765

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/* net/atm/raw.c - Raw AAL0 and AAL5 transports */
 
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
 
 
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/atmdev.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/mm.h>
 
#include "common.h"
#include "protocols.h"
 
 
#if 0
#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
#else
#define DPRINTK(format,args...)
#endif
 
 
/*
 * SKB == NULL indicates that the link is being closed
 */
 
void atm_push_raw(struct atm_vcc *vcc,struct sk_buff *skb)
{
        if (skb) {
                skb_queue_tail(&vcc->sk->receive_queue,skb);
                wake_up(&vcc->sleep);
        }
}
 
 
static void atm_pop_raw(struct atm_vcc *vcc,struct sk_buff *skb)
{
        DPRINTK("APopR (%d) %d -= %d\n",vcc->vci,vcc->sk->wmem_alloc,skb->truesize);
        atomic_sub(skb->truesize, &vcc->sk->wmem_alloc);
        dev_kfree_skb_any(skb);
        wake_up(&vcc->sleep);
}
 
 
static int atm_send_aal0(struct atm_vcc *vcc,struct sk_buff *skb)
{
        /*
         * Note that if vpi/vci are _ANY or _UNSPEC the below will
         * still work
         */
        if (!capable(CAP_NET_ADMIN) &&
            (((u32 *) skb->data)[0] & (ATM_HDR_VPI_MASK | ATM_HDR_VCI_MASK)) !=
            ((vcc->vpi << ATM_HDR_VPI_SHIFT) | (vcc->vci << ATM_HDR_VCI_SHIFT)))
            {
                kfree_skb(skb);
                return -EADDRNOTAVAIL;
        }
        return vcc->dev->ops->send(vcc,skb);
}
 
 
int atm_init_aal0(struct atm_vcc *vcc)
{
        vcc->push = atm_push_raw;
        vcc->pop = atm_pop_raw;
        vcc->push_oam = NULL;
        vcc->send = atm_send_aal0;
        return 0;
}
 
 
int atm_init_aal34(struct atm_vcc *vcc)
{
        vcc->push = atm_push_raw;
        vcc->pop = atm_pop_raw;
        vcc->push_oam = NULL;
        vcc->send = vcc->dev->ops->send;
        return 0;
}
 
 
int atm_init_aal5(struct atm_vcc *vcc)
{
        vcc->push = atm_push_raw;
        vcc->pop = atm_pop_raw;
        vcc->push_oam = NULL;
        vcc->send = vcc->dev->ops->send;
        return 0;
}
 
 
EXPORT_SYMBOL(atm_init_aal5);

Line No.	Rev	Author	Line
1	1275	phoenix	`/* net/atm/raw.c - Raw AAL0 and AAL5 transports */`
2
3			`/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */`
4
5
6			`#include <linux/module.h>`
7			`#include <linux/sched.h>`
8			`#include <linux/atmdev.h>`
9			`#include <linux/kernel.h>`
10			`#include <linux/skbuff.h>`
11			`#include <linux/mm.h>`
12
13			`#include "common.h"`
14			`#include "protocols.h"`
15
16
17			`#if 0`
18			`#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)`
19			`#else`
20			`#define DPRINTK(format,args...)`
21			`#endif`
22
23
24			`/*`
25			`* SKB == NULL indicates that the link is being closed`
26			`*/`
27
28			`void atm_push_raw(struct atm_vcc vcc,struct sk_buff skb)`
29			`{`
30			`if (skb) {`
31			`skb_queue_tail(&vcc->sk->receive_queue,skb);`
32			`wake_up(&vcc->sleep);`
33			`}`
34			`}`
35
36
37			`static void atm_pop_raw(struct atm_vcc vcc,struct sk_buff skb)`
38			`{`
39			`DPRINTK("APopR (%d) %d -= %d\n",vcc->vci,vcc->sk->wmem_alloc,skb->truesize);`
40			`atomic_sub(skb->truesize, &vcc->sk->wmem_alloc);`
41			`dev_kfree_skb_any(skb);`
42			`wake_up(&vcc->sleep);`
43			`}`
44
45
46			`static int atm_send_aal0(struct atm_vcc vcc,struct sk_buff skb)`
47			`{`
48			`/*`
49			`* Note that if vpi/vci are _ANY or _UNSPEC the below will`
50			`* still work`
51			`*/`
52			`if (!capable(CAP_NET_ADMIN) &&`
53			`(((u32 *) skb->data)[0] & (ATM_HDR_VPI_MASK \| ATM_HDR_VCI_MASK)) !=`
54			`((vcc->vpi << ATM_HDR_VPI_SHIFT) \| (vcc->vci << ATM_HDR_VCI_SHIFT)))`
55			`{`
56			`kfree_skb(skb);`
57			`return -EADDRNOTAVAIL;`
58			`}`
59			`return vcc->dev->ops->send(vcc,skb);`
60			`}`
61
62
63			`int atm_init_aal0(struct atm_vcc *vcc)`
64			`{`
65			`vcc->push = atm_push_raw;`
66			`vcc->pop = atm_pop_raw;`
67			`vcc->push_oam = NULL;`
68			`vcc->send = atm_send_aal0;`
69			`return 0;`
70			`}`
71
72
73			`int atm_init_aal34(struct atm_vcc *vcc)`
74			`{`
75			`vcc->push = atm_push_raw;`
76			`vcc->pop = atm_pop_raw;`
77			`vcc->push_oam = NULL;`
78			`vcc->send = vcc->dev->ops->send;`
79			`return 0;`
80			`}`
81
82
83			`int atm_init_aal5(struct atm_vcc *vcc)`
84			`{`
85			`vcc->push = atm_push_raw;`
86			`vcc->pop = atm_pop_raw;`
87			`vcc->push_oam = NULL;`
88			`vcc->send = vcc->dev->ops->send;`
89			`return 0;`
90			`}`
91
92
93			`EXPORT_SYMBOL(atm_init_aal5);`

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [net/] [atm/] [raw.c] - Blame information for rev 1765