Re: outbound queue overflow

From: samudrala@us.ibm.com
Date: Fri Jul 27 2001 - 13:50:50 EST


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

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