Hello, I wonder HOW could i know which packet was sent with tx_interrupt... to collect stats on time that sending process takes I added field to skbuff that is filled for each and every packet - so every packet is numbered. Unfortunatelly when packet is sent to NIC for transmission over ethernet cable there is no skb allocated for this packet any longer. So HOW can i tell how long tx_interrupt is processed for let's say 56th, 132nd, 239th packet etc. I mean is there a variable in tx_interrupt() that i can check for which packet tx_interrupt was called??? some variable that (in some way) controlls packets being sent? I am speaking of http://lxr.linux.no/source/drivers/net/8139too.c#L1721 routine in 8139too.c in 2.4.20 kernel. regards adam - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html