From: Jakub Kicinski <kuba@kernel.org>
To: Mina Almasry <almasrymina@google.com>
Cc: Pavel Begunkov <asml.silence@gmail.com>,
netdev@vger.kernel.org, io-uring@vger.kernel.org,
Eric Dumazet <edumazet@google.com>,
Willem de Bruijn <willemb@google.com>,
Paolo Abeni <pabeni@redhat.com>,
andrew+netdev@lunn.ch, horms@kernel.org, davem@davemloft.net,
sdf@fomichev.me, dw@davidwei.uk, michael.chan@broadcom.com,
dtatulea@nvidia.com, ap420073@gmail.com
Subject: Re: [RFC v1 01/22] docs: ethtool: document that rx_buf_len must control payload lengths
Date: Fri, 1 Aug 2025 16:13:26 -0700 [thread overview]
Message-ID: <20250801161326.6dd670be@kernel.org> (raw)
In-Reply-To: <CAHS8izN_TEY3PuHmW6czP0Ce00gfCOgUCW0vJNzakBeYRFAGgg@mail.gmail.com>
On Mon, 28 Jul 2025 14:36:37 -0700 Mina Almasry wrote:
> > +``ETHTOOL_A_RINGS_RX_BUF_LEN`` controls the size of the buffer chunks driver
> > +uses to receive packets. If the device uses different memory polls for headers
> > +and payload this setting may control the size of the header buffers but must
> > +control the size of the payload buffers.
> > +
>
> To be honest I'm not a big fan of the ambiguity here? Could this
> configure just the payload buffer sizes? And a new one to configure
> the header buffer sizes eventually?
>
> Also, IIUC in this patchset, actually the size applied will be the
> order that is larger than the size configured, no? So a setting of 9KB
> will actually result in 16KB, no? Should this be documented? Or do we
> expect non power of 2 sizes to be rejected by the driver and this API
> fail?
This is an existing parameter.
next prev parent reply other threads:[~2025-08-01 23:13 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-28 11:04 [RFC v1 00/22] Large rx buffer support for zcrx Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 01/22] docs: ethtool: document that rx_buf_len must control payload lengths Pavel Begunkov
2025-07-28 18:11 ` Mina Almasry
2025-07-28 21:36 ` Mina Almasry
2025-08-01 23:13 ` Jakub Kicinski [this message]
2025-07-28 11:04 ` [RFC v1 02/22] net: ethtool: report max value for rx-buf-len Pavel Begunkov
2025-07-29 5:00 ` Subbaraya Sundeep
2025-07-28 11:04 ` [RFC v1 03/22] net: use zero value to restore rx_buf_len to default Pavel Begunkov
2025-07-29 5:03 ` Subbaraya Sundeep
2025-07-28 11:04 ` [RFC v1 04/22] net: clarify the meaning of netdev_config members Pavel Begunkov
2025-07-28 21:44 ` Mina Almasry
2025-08-01 23:14 ` Jakub Kicinski
2025-07-28 11:04 ` [RFC v1 05/22] net: add rx_buf_len to netdev config Pavel Begunkov
2025-07-28 21:50 ` Mina Almasry
2025-08-01 23:18 ` Jakub Kicinski
2025-07-28 11:04 ` [RFC v1 06/22] eth: bnxt: read the page size from the adapter struct Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 07/22] eth: bnxt: set page pool page order based on rx_page_size Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 08/22] eth: bnxt: support setting size of agg buffers via ethtool Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 09/22] net: move netdev_config manipulation to dedicated helpers Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 10/22] net: reduce indent of struct netdev_queue_mgmt_ops members Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 11/22] net: allocate per-queue config structs and pass them thru the queue API Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 12/22] net: pass extack to netdev_rx_queue_restart() Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 13/22] net: add queue config validation callback Pavel Begunkov
2025-07-28 22:26 ` Mina Almasry
2025-07-28 11:04 ` [RFC v1 14/22] eth: bnxt: always set the queue mgmt ops Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 15/22] eth: bnxt: store the rx buf size per queue Pavel Begunkov
2025-07-28 22:33 ` Mina Almasry
2025-08-01 23:20 ` Jakub Kicinski
2025-07-28 11:04 ` [RFC v1 16/22] eth: bnxt: adjust the fill level of agg queues with larger buffers Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 17/22] netdev: add support for setting rx-buf-len per queue Pavel Begunkov
2025-07-28 23:10 ` Mina Almasry
2025-08-01 23:37 ` Jakub Kicinski
2025-07-28 11:04 ` [RFC v1 18/22] net: wipe the setting of deactived queues Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 19/22] eth: bnxt: use queue op config validate Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 20/22] eth: bnxt: support per queue configuration of rx-buf-len Pavel Begunkov
2025-07-28 11:04 ` [RFC v1 21/22] net: parametrise mp open with a queue config Pavel Begunkov
2025-08-02 0:10 ` Jakub Kicinski
2025-08-04 12:50 ` Pavel Begunkov
2025-08-05 22:43 ` Jakub Kicinski
2025-08-06 0:05 ` Jakub Kicinski
2025-08-06 16:48 ` Mina Almasry
2025-08-06 18:11 ` Jakub Kicinski
2025-08-06 18:30 ` Mina Almasry
2025-08-06 22:05 ` Jakub Kicinski
2025-07-28 11:04 ` [RFC v1 22/22] io_uring/zcrx: implement large rx buffer support Pavel Begunkov
2025-07-28 17:13 ` [RFC v1 00/22] Large rx buffer support for zcrx Stanislav Fomichev
2025-07-28 18:18 ` Pavel Begunkov
2025-07-28 20:21 ` Stanislav Fomichev
2025-07-28 21:28 ` Pavel Begunkov
2025-07-28 22:06 ` Stanislav Fomichev
2025-07-28 22:44 ` Pavel Begunkov
2025-07-29 16:33 ` Stanislav Fomichev
2025-07-30 14:16 ` Pavel Begunkov
2025-07-30 15:50 ` Stanislav Fomichev
2025-07-31 19:34 ` Mina Almasry
2025-07-31 19:57 ` Pavel Begunkov
2025-07-31 20:05 ` Mina Almasry
2025-08-01 9:48 ` Pavel Begunkov
2025-08-01 9:58 ` Pavel Begunkov
2025-07-28 23:22 ` Mina Almasry
2025-07-29 16:41 ` Stanislav Fomichev
2025-07-29 17:01 ` Mina Almasry
2025-07-28 18:54 ` Mina Almasry
2025-07-28 19:42 ` Pavel Begunkov
2025-07-28 20:23 ` Mina Almasry
2025-07-28 20:57 ` Pavel Begunkov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250801161326.6dd670be@kernel.org \
--to=kuba@kernel.org \
--cc=almasrymina@google.com \
--cc=andrew+netdev@lunn.ch \
--cc=ap420073@gmail.com \
--cc=asml.silence@gmail.com \
--cc=davem@davemloft.net \
--cc=dtatulea@nvidia.com \
--cc=dw@davidwei.uk \
--cc=edumazet@google.com \
--cc=horms@kernel.org \
--cc=io-uring@vger.kernel.org \
--cc=michael.chan@broadcom.com \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=sdf@fomichev.me \
--cc=willemb@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox