net: Use skbufhead with raw lock
Use the rps lock as rawlock so we can keep irq-off regions. It looks low
latency. However we can't kfree() from this context therefore we defer this
to the softirq and use the tofree_queue list for it (similar to process_queue).
Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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