Hi, I'm doing some kernel hacking to evaluate different TCP congestion control algorithms in a WLAN mesh network. I need to output some TCP parameters (such as window sizes et al) over time; what I'd wish to do is outputting them to a character device whenever a packet comes in/is sent. I've written the device code, now I just need to output the parameters using that device. The easiest way would be simply outputting the whole tcp_sock structure to the device, and then reading it in from user space. The problem is that I don't know where exactly in the TCP implementation the packets are transmitted/received, i.e. where I should send the data over to the device implementation. The ideal case would of course be some kind of callback/hook function; I imagine there might be something like this for the netfilter modules, but I have no idea. Can anybody help me with this? Thank you, Aaron -- Aaron Isotton | http://www.isotton.com/ I'll give you a definite maybe. --Samuel Goldwyn
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