netdev - Re: [PATCH net-next 0/4] xps_flows: XPS flow steering when there is no socket

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Date:   Thu, 1 Sep 2016 12:25:30 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Tom Herbert <tom@...bertland.com>, davem@...emloft.net,
        netdev@...r.kernel.org
Cc:     kernel-team@...com, rick.jones2@....com
Subject: Re: [PATCH net-next 0/4] xps_flows: XPS flow steering when there is
 no socket

On 08/31/2016 05:10 PM, Tom Herbert wrote:
> This patch set introduces transmit flow steering for socketless packets.
> The idea is that we record the transmit queues in a flow table that is
> indexed by skbuff hash.  The flow table entries have two values: the
> queue_index and the head cnt of packets from the TX queue. We only allow
> a queue to change for a flow if the tail cnt in the TX queue advances
> beyond the recorded head cnt. That is the condition that should indicate
> that all outstanding packets for the flow have completed transmission so
> the queue can change.
> 
> Tracking the inflight queue is performed as part of DQL. Two fields are
> added to the dql structure: num_enqueue_ops and num_completed_ops.
> num_enqueue_ops incremented in dql_queued and num_completed_ops is
> incremented in dql_completed by the number of operations completed (an
> new argument to the function).
> 
> This patch set creates /sys/class/net/eth*/xps_dev_flow_table_cnt
> which number of entries in the XPS flow table.

If you respin, do you mind updating the sysfs documentation at
Documentation/ABI/testing/sysfs-class-net-queues with the new entries
you are adding? Thanks!
-- 
Florian