#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
#include <linux/module.h>
#include <linux/atmdev.h>
#include <linux/capability.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include "common.h"
#include "protocols.h"
static void atm_push_raw(struct atm_vcc *vcc, struct sk_buff *skb)
{
if (skb) {
struct sock *sk = sk_atm(vcc);
skb_queue_tail(&sk->sk_receive_queue, skb);
sk->sk_data_ready(sk);
}
}
static void atm_pop_raw(struct atm_vcc *vcc, struct sk_buff *skb)
{
struct sock *sk = sk_atm(vcc);
pr_debug("(%d) %d -= %d\n",
vcc->vci, sk_wmem_alloc_get(sk), ATM_SKB(skb)->acct_truesize);
WARN_ON(refcount_sub_and_test(ATM_SKB(skb)->acct_truesize, &sk->sk_wmem_alloc));
dev_kfree_skb_any(skb);
sk->sk_write_space(sk);
}
static int atm_send_aal0(struct atm_vcc *vcc, struct sk_buff *skb)
{
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;
}
if (vcc->dev->ops->send_bh)
return vcc->dev->ops->send_bh(vcc, skb);
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;
if (vcc->dev->ops->send_bh)
vcc->send = vcc->dev->ops->send_bh;
else
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;
if (vcc->dev->ops->send_bh)
vcc->send = vcc->dev->ops->send_bh;
else
vcc->send = vcc->dev->ops->send;
return 0;
}
EXPORT_SYMBOL