1 /* net/atm/raw.c - Raw AAL0 and AAL5 transports */
3 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
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>
14 #include "protocols.h"
18 #define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
20 #define DPRINTK(format,args...)
25 * SKB == NULL indicates that the link is being closed
28 void atm_push_raw(struct atm_vcc
*vcc
,struct sk_buff
*skb
)
31 skb_queue_tail(&vcc
->sk
->sk_receive_queue
, skb
);
32 vcc
->sk
->sk_data_ready(vcc
->sk
, skb
->len
);
37 static void atm_pop_raw(struct atm_vcc
*vcc
,struct sk_buff
*skb
)
39 DPRINTK("APopR (%d) %d -= %d\n", vcc
->vci
, vcc
->sk
->sk_wmem_alloc
,
41 atomic_sub(skb
->truesize
, &vcc
->sk
->sk_wmem_alloc
);
42 dev_kfree_skb_any(skb
);
43 vcc
->sk
->sk_write_space(vcc
->sk
);
47 static int atm_send_aal0(struct atm_vcc
*vcc
,struct sk_buff
*skb
)
50 * Note that if vpi/vci are _ANY or _UNSPEC the below will
53 if (!capable(CAP_NET_ADMIN
) &&
54 (((u32
*) skb
->data
)[0] & (ATM_HDR_VPI_MASK
| ATM_HDR_VCI_MASK
)) !=
55 ((vcc
->vpi
<< ATM_HDR_VPI_SHIFT
) | (vcc
->vci
<< ATM_HDR_VCI_SHIFT
)))
58 return -EADDRNOTAVAIL
;
60 return vcc
->dev
->ops
->send(vcc
,skb
);
64 int atm_init_aal0(struct atm_vcc
*vcc
)
66 vcc
->push
= atm_push_raw
;
67 vcc
->pop
= atm_pop_raw
;
69 vcc
->send
= atm_send_aal0
;
74 int atm_init_aal34(struct atm_vcc
*vcc
)
76 vcc
->push
= atm_push_raw
;
77 vcc
->pop
= atm_pop_raw
;
79 vcc
->send
= vcc
->dev
->ops
->send
;
84 int atm_init_aal5(struct atm_vcc
*vcc
)
86 vcc
->push
= atm_push_raw
;
87 vcc
->pop
= atm_pop_raw
;
89 vcc
->send
= vcc
->dev
->ops
->send
;
94 EXPORT_SYMBOL(atm_init_aal5
);