On Thu, 02 Jan 2014 12:12:49 +0700, Mulyadi Santosa said: > Other than what others have said, IMHO it is better to avoid such > rapid alloc/free, assuming your code fragment is running on every > packet reception/sending. > > Instead, I suggest to allocate the memory before the ip_queue_xmit and > use-reuse it inside ip_queue_xmit.
Be careful with re-entrancy issues - you'll want a separate instance of memory for all possible concurrent callers of ip_queue_xmit (you may need one per active interface, because you can e transmitting packets on multiple interfaces at the same time).
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