The outgoing packets are dropped in the enqueue routine of the queing discipline if there is not enough space in the queue. dev_queue_xmit calls q->enqueue which resolves to pfifo_fast_enqueue() when the default queuing discipline is used. You can see the packet drop in this routine. Thanks Sridhar Sent by: linux-net-owner@vger.kernel.org To: "linux-net@vger.kernel.org" <linux-net@vger.kernel.org> cc: Subject: outbound queue overflow I wonder where in the Linux networking code, we can see if outgoing packets are dropped due to lack of buffer space (full queue). In particular, IP->ETH. I looked e.g. at dev_queue_xmit in net/core/dev.c but could not find out if this is the right place to look at. Hope anybody can give me a helping hint Cheers, Thiemo - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org