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