Why sch_fifo.c etc, en(de)queues skb buffers by using __skb_queue_* functions, but sch_csz.c using skb_queue_* (irq locking) variants? What cases should I lock them too? Thanks in advance, Dimitry. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/