Creating and sending a packet from a kernel module

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I'd like to create and send a brand new TCP SYN packet from a module.
Does anybody have an example of how to do this.

I've tried doing alloc_skb, filling in all the information I could
imagine needing in skb->data, but what is the minimal amount of stuff
needed by the other parts of the skb to get this packet moving?

Is there an easy way to create and own a TCP socket from a module that I
could send and receive on?

Thanks,
        Josh

-- 
Joshua Stewart <joshua.stewart@comcast.net>

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