Hi
Iam exploring the linux tcp/ip implementation. Iam trying to tunnel
packets sent by an application through IP. Iam using the function
ip_finish_output for sending the packet out. After building the IP header, I
call ip_route_output_key with the destination and source addresses and
set the skb->dst to that returned by the function. Then i call
ip_finish_output with the skb. The problem is the system behaviour is very
non-deterministic. I have written this particular piece of code as a module
and sometimes it works very well but sometimes it hangs. It hangs in
ip_finish_output and sometimes I have also observed that the same packet
is sent a lot of times before it hangs but not always.
Can anyone please tell me whats wrong in my method?
Here's what i do
After building all the headers
ip_route_output_key(&rth,&key);
skb->dst = &rth->u.dst;
ip_finish_output(skb);
Thanks in advance
Iam exploring the linux tcp/ip implementation. Iam trying to tunnel
packets sent by an application through IP. Iam using the function
ip_finish_output for sending the packet out. After building the IP header, I
call ip_route_output_key with the destination and source addresses and
set the skb->dst to that returned by the function. Then i call
ip_finish_output with the skb. The problem is the system behaviour is very
non-deterministic. I have written this particular piece of code as a module
and sometimes it works very well but sometimes it hangs. It hangs in
ip_finish_output and sometimes I have also observed that the same packet
is sent a lot of times before it hangs but not always.
Can anyone please tell me whats wrong in my method?
Here's what i do
After building all the headers
ip_route_output_key(&rth,&key);
skb->dst = &rth->u.dst;
ip_finish_output(skb);
Thanks in advance
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