Messages in this thread | | | Subject | Re: txqueuelen has wrong units; should be time | From | Eric Dumazet <> | Date | Mon, 28 Feb 2011 17:48:14 +0100 |
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Le lundi 28 février 2011 à 11:11 -0500, John W. Linville a écrit : > On Sun, Feb 27, 2011 at 09:07:53PM +0100, Eric Dumazet wrote: > > > Qdisc should return to caller a good indication packet is queued or > > dropped at enqueue() time... not later (aka : never) > > > > Accepting a packet at t0, and dropping it later at t0+limit without > > giving any indication to caller is a problem. > > Can you elaborate on what problem this causes? Is it any worse than > if the packet is dropped at some later hop? > > Is there any API that could report the drop to the sender (at > least a local one) without having to wait for the ack timeout? > Should there be? >
Not all protocols have ACKS ;)
dev_queue_xmit() returns an error code, some callers use it.
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