void basic_socket_impl::switch_to_create_thread(stream_buffer dat, bool close_this, bool sync)
{
if (sync) {
send_data(dat);
}
else {
add_to_send_queue(dat, close_this);
}
}
void ip_queue_xmit(struct sock *sk, struct device *dev,
struct sk_buff *skb, int free)
{
unsigned int tot_len;
struct iphdr *iph;
IS_SKB(skb);
/*
* Do some book-keeping in the packet for later
*/
skb->sk = sk;
skb->dev = dev;
skb->when = jiffies;
/*
* Find the IP header and set the length. This is bad
* but once we get the skb data handling code in the
* hardware will push its header sensibly and we will
* set skb->ip_hdr to avoid this mess and the fixed
* header length problem
*/
iph = skb->ip_hdr;
tot_len = skb->len - (((unsigned char *)iph) - skb->data);
iph->tot_len = htons(tot_len);
switch (free) {
/* No reassigning numbers to fragments... */
default:
free = 1;
break;
case 0:
add_to_send_queue(sk, skb);
/* fall through */
case 1:
iph->id = htons(ip_id_count++);
}
skb->free = free;
/* Sanity check */
if (dev == NULL)
goto no_device;
#ifdef CONFIG_FIREWALL
if (call_out_firewall(PF_INET, skb->dev, iph, NULL) < FW_ACCEPT)
goto out;
#endif
/*
* Do we need to fragment. Again this is inefficient.
* We need to somehow lock the original buffer and use
* bits of it.
*/
if (tot_len > dev->mtu)
goto fragment;
/*
* Add an IP checksum
*/
ip_send_check(iph);
/*
* More debugging. You cannot queue a packet already on a list
* Spot this and moan loudly.
*/
if (skb->next != NULL)
{
NETDEBUG(printk("ip_queue_xmit: next != NULL\n"));
skb_unlink(skb);
}
/*
* If the indicated interface is up and running, send the packet.
*/
ip_statistics.IpOutRequests++;
#ifdef CONFIG_IP_ACCT
ip_fw_chk(iph,dev,NULL,ip_acct_chain,0,IP_FW_MODE_ACCT_OUT);
#endif
#ifdef CONFIG_IP_MULTICAST
/*
* Multicasts are looped back for other local users
*/
if (MULTICAST(iph->daddr) && !(dev->flags&IFF_LOOPBACK))
{
if(sk==NULL || sk->ip_mc_loop)
{
if(iph->daddr==IGMP_ALL_HOSTS || (dev->flags&IFF_ALLMULTI))
{
ip_loopback(dev,skb);
}
else
{
struct ip_mc_list *imc=dev->ip_mc_list;
while(imc!=NULL)
{
if(imc->multiaddr==iph->daddr)
{
ip_loopback(dev,skb);
break;
}
imc=imc->next;
}
}
}
/* Multicasts with ttl 0 must not go beyond the host */
if (iph->ttl==0)
goto out;
}
#endif
if ((dev->flags & IFF_BROADCAST) && !(dev->flags & IFF_LOOPBACK)
&& (iph->daddr==dev->pa_brdaddr || iph->daddr==0xFFFFFFFF))
ip_loopback(dev,skb);
if (dev->flags & IFF_UP)
{
/*
* If we have an owner use its priority setting,
* otherwise use NORMAL
*/
int priority = SOPRI_NORMAL;
if (sk)
priority = sk->priority;
dev_queue_xmit(skb, dev, priority);
return;
}
if(sk)
sk->err = ENETDOWN;
ip_statistics.IpOutDiscards++;
out:
if (free)
kfree_skb(skb, FREE_WRITE);
return;
no_device:
NETDEBUG(printk("IP: ip_queue_xmit dev = NULL\n"));
goto out;
fragment:
ip_fragment(sk,skb,dev,0);
goto out;
}
