From: Daniele Palmas <dnlplm@gmail.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: "David Miller" <davem@davemloft.net>,
"Paolo Abeni" <pabeni@redhat.com>,
"Eric Dumazet" <edumazet@google.com>,
"Subash Abhinov Kasiviswanathan" <quic_subashab@quicinc.com>,
"Sean Tranchetti" <quic_stranche@quicinc.com>,
"Jonathan Corbet" <corbet@lwn.net>, "Bjørn Mork" <bjorn@mork.no>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
netdev@vger.kernel.org
Subject: Re: [PATCH net-next 1/3] ethtool: add tx aggregation parameters
Date: Fri, 11 Nov 2022 22:51:37 +0100 [thread overview]
Message-ID: <CAGRyCJF0v8M3Ebd3tSnLpWeB6K5pOtWvbhd1tzOnTE8ZHs4r0w@mail.gmail.com> (raw)
In-Reply-To: <20221111090720.278326d1@kernel.org>
Hello Jakub,
Il giorno ven 11 nov 2022 alle ore 18:07 Jakub Kicinski
<kuba@kernel.org> ha scritto:
>
> On Wed, 9 Nov 2022 19:02:47 +0100 Daniele Palmas wrote:
> > Add the following ethtool tx aggregation parameters:
> >
> > ETHTOOL_A_COALESCE_TX_MAX_AGGR_SIZE
> > Maximum size of an aggregated block of frames in tx.
>
> perhaps s/size/bytes/ ? Or just mention bytes in the doc? I think it's
> the first argument in coalescing expressed in bytes, so to avoid
> confusion we should state that clearly.
Right, better to have the word bytes to make it clear.
>
> > ETHTOOL_A_COALESCE_TX_MAX_AGGR_FRAMES
> > Maximum number of frames that can be aggregated into a block.
> >
> > ETHTOOL_A_COALESCE_TX_USECS_AGGR_TIME
> > Time in usecs after the first packet arrival in an aggregated
> > block for the block to be sent.
>
> Can we add this info to the ethtool-netlink.rst doc?
>
> Can we also add a couple of sentences describing what aggregation is?
> Something about copying the packets into a contiguous buffer to submit
> as one large IO operation, usually found on USB adapters?
>
> People with very different device needs will read this and may pattern
> match the parameters to something completely different like just
> delaying ringing the doorbell. So even if things seem obvious they are
> worth documenting.
>
Sure, I'll take care of documenting this better.
> > diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
> > index d578b8bcd8a4..a6f115867648 100644
> > --- a/Documentation/networking/ethtool-netlink.rst
> > +++ b/Documentation/networking/ethtool-netlink.rst
> > @@ -1001,6 +1001,9 @@ Kernel response contents:
> > ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval
> > ``ETHTOOL_A_COALESCE_USE_CQE_TX`` bool timer reset mode, Tx
> > ``ETHTOOL_A_COALESCE_USE_CQE_RX`` bool timer reset mode, Rx
> > + ``ETHTOOL_A_COALESCE_TX_MAX_AGGR_SIZE`` u32 max aggr packets size, Tx
> > + ``ETHTOOL_A_COALESCE_TX_MAX_AGGR_FRAMES`` u32 max aggr packets, Tx
> > + ``ETHTOOL_A_COALESCE_TX_USECS_AGGR_TIME`` u32 time (us), aggr pkts, Tx
>
> nit: perhaps move _aggr before the specifics? e.g.
>
> ETHTOOL_A_COALESCE_TX_AGGR_MAX_SIZE
> ETHTOOL_A_COALESCE_TX_AGGR_USECS_TIME
>
Ack.
> FWIW I find that the easiest way to do whole-sale renames in a series
> is to generate the patches as .patch files, run sed on those, and apply
> them back on a fresh branch. Rebasing is a PITA with renames.
>
Thanks for the advice.
> Other then these nit picks - looks very reasonable :)
Thanks for the review!
Regards,
Daniele
next prev parent reply other threads:[~2022-11-11 21:52 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-09 18:02 [PATCH net-next 0/3] add tx packets aggregation to ethtool and rmnet Daniele Palmas
2022-11-09 18:02 ` [PATCH net-next 1/3] ethtool: add tx aggregation parameters Daniele Palmas
2022-11-11 17:07 ` Jakub Kicinski
2022-11-11 21:51 ` Daniele Palmas [this message]
2022-11-13 9:48 ` Gal Pressman
2022-11-14 10:06 ` Daniele Palmas
2022-11-14 10:45 ` Dave Taht
2022-11-15 11:51 ` Daniele Palmas
2022-11-15 15:27 ` Dave Taht
2022-11-15 0:42 ` Jakub Kicinski
2022-11-15 10:59 ` Gal Pressman
2022-11-15 16:21 ` Jakub Kicinski
2022-11-09 18:02 ` [PATCH net-next 2/3] net: qualcomm: rmnet: add tx packets aggregation Daniele Palmas
2022-11-10 17:32 ` Alexander Lobakin
2022-11-11 1:17 ` Subash Abhinov Kasiviswanathan (KS)
2022-11-11 17:11 ` Jakub Kicinski
2022-11-11 22:00 ` Daniele Palmas
2022-11-14 8:48 ` Daniele Palmas
2022-11-11 17:23 ` Daniele Palmas
2022-11-16 15:19 ` Daniele Palmas
2022-11-16 16:20 ` Alexander Lobakin
2022-11-20 9:25 ` Daniele Palmas
2022-11-20 9:39 ` Bjørn Mork
2022-11-20 9:52 ` Daniele Palmas
2022-11-20 17:48 ` Subash Abhinov Kasiviswanathan (KS)
2022-11-21 7:00 ` Daniele Palmas
2022-11-24 3:32 ` Subash Abhinov Kasiviswanathan (KS)
2022-11-10 19:09 ` kernel test robot
2022-11-11 17:14 ` Jakub Kicinski
2022-11-14 9:13 ` Daniele Palmas
2022-11-14 10:25 ` Bjørn Mork
2022-11-15 0:43 ` Jakub Kicinski
2022-11-09 18:02 ` [PATCH net-next 3/3] net: qualcomm: rmnet: add ethtool support for configuring tx aggregation Daniele Palmas
2022-11-11 6:46 ` kernel test robot
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