Hi, i'm a student of computer science and i'm developing a project on a kernel 2.6.30.

I already have a mechanism that give me a feedback when a tcp packet don't reach the router on wireless connection. Now i will be able to resend lost packets(that are lost during the route node-router) before the tcp timeout. When my hardware give me this information i put the lost packet into a list(with information about ip and tcp headers).

Here i have my problem. When i put package on my list i think i have to send an event that tcp_write_timer() can handle for resending. Now i alredy modified tcp_write_timer() to handle another event but i don't understand how this function receive it. I think i need to set the parameter icsk_pending with the number of the event and put the package into the sk list of the socket. Can anyone explain me how this resending event work ?

Thanks a lot.

I have done packet buffering and forwarding, but I used iptables, libnfnetlink, and libnet. That allowed me to do everything in user space. If you are directly modifying code in the network stack, you will really need a copy of "Understanding Linux Network Internals". This book tells and shows how the Linux network stack works.

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Moved: This thread is more suitable in Linux Kernel and has been moved accordingly to help your question t get he exposure it deserves.