int isdn_concap_dl_disconn_req(struct concap_proto *concap)
{
IX25DEBUG( "isdn_concap_dl_disconn_req: %s \n", concap -> net_dev -> name);
isdn_net_hangup( concap -> net_dev );
return 0;
}
int dw_abc_udp_test(struct sk_buff *skb,struct net_device *ndev)
{
if(ndev != NULL && skb != NULL && skb->protocol == htons(ETH_P_IP)) {
struct iphdr *iph = (struct iphdr *)skb->data;
isdn_net_local *lp = (isdn_net_local *) ndev->priv;
int rklen = skb->len;
if (skb->nh.raw > skb->data && skb->nh.raw < skb->tail) {
rklen -= (char *)skb->nh.raw - (char *)skb->data;
iph = (struct iphdr *)skb->nh.raw;
}
if(rklen >= 20 && iph->version == 4 &&
!(lp->dw_abc_flags & ISDN_DW_ABC_FLAG_NO_UDP_CHECK)) {
if( iph->tot_len == NBYTEORDER_30BYTES &&
iph->protocol == IPPROTO_UDP) {
struct udphdr *udp =
(struct udphdr *)((char *)iph + (iph->ihl << 2));
ushort usrc = ntohs(udp->source);
if( udp->dest == htons(25001) &&
usrc >= 20000 && usrc < 25000) {
char *p = (char *)(udp + 1);
if(p[0] == p[1]) {
char mc = 0;
switch(*p) {
case 0x30:
mc = *p;
if((lp->flags & ISDN_NET_CONNECTED) && (!lp->dialstate))
mc++;
break;
case 0x32:
mc = *p;
#ifdef CONFIG_ISDN_WITH_ABC_UDP_CHECK_DIAL
if((lp->flags & ISDN_NET_CONNECTED) && (!lp->dialstate)) {
mc++;
break;
}
if(!isdn_net_force_dial_lp(lp)) mc++;
#endif
break;
case 0x11:
mc = *p + 1;
isdn_dw_abc_reset_interface(lp,1);
break;
case 0x28: mc = *p + 1; break;
case 0x2a:
case 0x2c:
mc = *p;
#ifdef CONFIG_ISDN_WITH_ABC_UDP_CHECK_HANGUP
if(!(lp->dw_abc_flags & ISDN_DW_ABC_FLAG_NO_UDP_HANGUP)) {
if(lp->isdn_device >= 0) {
isdn_net_hangup(ndev);
mc = *p + 1;
}
}
#endif
break;
}
if(mc) {
struct sk_buff *nskb;
int need = 2+sizeof(struct iphdr)+sizeof(struct udphdr);
int hneed = need + ndev->hard_header_len;
if((nskb = (struct sk_buff *)dev_alloc_skb(hneed)) != NULL) {
ushort n = sizeof(struct udphdr) + 2;
struct iphdr *niph;
struct udphdr *nup;
skb_reserve(nskb,ndev->hard_header_len);
if((niph = (struct iphdr *)skb_put(nskb,need))==NULL){
printk(KERN_DEBUG "%s: skb_put failt (%d bytes)\n", lp->name,hneed);
dev_kfree_skb(nskb);
return(0);
}
nup = (struct udphdr *)(niph + 1);
((char *)(nup + 1))[0] = mc;
((char *)(nup + 1))[1] = mc;
nup->source=udp->dest;
nup->dest=udp->source;
nup->len=htons(n);
nup->check=0; /* dont need checksum */
memset((void *)niph,0,sizeof(*niph));
niph->version=4;
niph->ihl=5;
niph->tot_len=NBYTEORDER_30BYTES;
niph->ttl = 32;
niph->protocol = IPPROTO_UDP;
niph->saddr=iph->daddr;
niph->daddr=iph->saddr;
niph->id=iph->id;
niph->check=ip_fast_csum((unsigned char *)niph,niph->ihl);
nskb->dev = ndev;
nskb->pkt_type = PACKET_HOST;
nskb->protocol = htons(ETH_P_IP);
nskb->mac.raw = nskb->data;
netif_rx(nskb);
}
return(1);
}
}
}
}
}
}
return(0);
}
