From: Jakub Kicinski <kuba@kernel.org>
To: Taehee Yoo <ap420073@gmail.com>
Cc: davem@davemloft.net, pabeni@redhat.com, edumazet@google.com,
almasrymina@google.com, donald.hunter@gmail.com, corbet@lwn.net,
michael.chan@broadcom.com, andrew+netdev@lunn.ch,
hawk@kernel.org, ilias.apalodimas@linaro.org, ast@kernel.org,
daniel@iogearbox.net, john.fastabend@gmail.com, dw@davidwei.uk,
sdf@fomichev.me, asml.silence@gmail.com, brett.creeley@amd.com,
linux-doc@vger.kernel.org, netdev@vger.kernel.org,
kory.maincent@bootlin.com, maxime.chevallier@bootlin.com,
danieller@nvidia.com, hengqi@linux.alibaba.com,
ecree.xilinx@gmail.com, przemyslaw.kitszel@intel.com,
hkallweit1@gmail.com, ahmed.zaki@intel.com,
rrameshbabu@nvidia.com, idosch@nvidia.com, jiri@resnulli.us,
bigeasy@linutronix.de, lorenzo@kernel.org, jdamato@fastly.com,
aleksander.lobakin@intel.com, kaiyuanz@google.com,
willemb@google.com, daniel.zahka@gmail.com,
Andy Gospodarek <gospo@broadcom.com>
Subject: Re: [PATCH net-next v6 3/9] bnxt_en: add support for tcp-data-split ethtool command
Date: Thu, 19 Dec 2024 07:25:19 -0800 [thread overview]
Message-ID: <20241219072519.4f35de6e@kernel.org> (raw)
In-Reply-To: <CAMArcTUToUPUceEFd0Xh_JL8kVZOX=rTarpy1iOAD5KvRWP5Fg@mail.gmail.com>
On Fri, 20 Dec 2024 00:14:01 +0900 Taehee Yoo wrote:
> > > The bnxt_en disallows setting up both single and multi buffer XDP, but core
> > > checks only single buffer XDP. So, if multi buffer XDP is attaching to
> > > the bnxt_en driver when HDS is enabled, the core can't filter it.
> >
> > Hm. Did you find this in the code, or did Broadcom folks suggest it?
> > AFAICT bnxt supports multi-buf XDP. Is there something in the code
> > that special-cases aggregation but doesn't work for pure HDS?
>
> There were some comments about HDS with XDP in the following thread.
> https://lore.kernel.org/netdev/20241022162359.2713094-1-ap420073@gmail.com/T/
> I may misunderstand reviews from Broadcom folks.
I see it now in bnxt_set_rx_skb_mode. I guess with high MTU
the device splits in some "dumb" way, at a fixed offset..
You're right, we have to keep the check in the driver,
at least for now.
next prev parent reply other threads:[~2024-12-19 15:25 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-18 14:45 [PATCH net-next v6 0/9] bnxt_en: implement tcp-data-split and thresh option Taehee Yoo
2024-12-18 14:45 ` [PATCH net-next v6 1/9] bnxt_en: add support for rx-copybreak ethtool command Taehee Yoo
2024-12-19 2:07 ` Jakub Kicinski
2024-12-19 13:24 ` Taehee Yoo
2024-12-18 14:45 ` [PATCH net-next v6 2/9] net: ethtool: add hds_config member in ethtool_netdev_state Taehee Yoo
2024-12-19 2:16 ` Jakub Kicinski
2024-12-18 14:45 ` [PATCH net-next v6 3/9] bnxt_en: add support for tcp-data-split ethtool command Taehee Yoo
2024-12-19 2:25 ` Jakub Kicinski
2024-12-19 2:41 ` Jakub Kicinski
2024-12-19 14:05 ` Taehee Yoo
2024-12-19 14:29 ` Jakub Kicinski
2024-12-19 15:14 ` Taehee Yoo
2024-12-19 15:25 ` Jakub Kicinski [this message]
2024-12-19 19:33 ` Andy Gospodarek
2024-12-19 20:18 ` Jakub Kicinski
2024-12-19 23:41 ` Michael Chan
2024-12-20 2:08 ` Jakub Kicinski
2024-12-18 14:45 ` [PATCH net-next v6 4/9] net: ethtool: add support for configuring hds-thresh Taehee Yoo
2024-12-19 2:35 ` Jakub Kicinski
2024-12-19 14:10 ` Taehee Yoo
2024-12-18 14:45 ` [PATCH net-next v6 5/9] bnxt_en: add support for hds-thresh ethtool command Taehee Yoo
2024-12-19 2:40 ` Jakub Kicinski
2024-12-19 14:12 ` Taehee Yoo
2024-12-18 14:45 ` [PATCH net-next v6 6/9] net: devmem: add ring parameter filtering Taehee Yoo
2024-12-18 14:45 ` [PATCH net-next v6 7/9] net: ethtool: " Taehee Yoo
2024-12-18 14:45 ` [PATCH net-next v6 8/9] net: disallow setup single buffer XDP when tcp-data-split is enabled Taehee Yoo
2024-12-19 2:44 ` Jakub Kicinski
2024-12-19 14:14 ` Taehee Yoo
2024-12-18 14:45 ` [PATCH net-next v6 9/9] netdevsim: add HDS feature Taehee Yoo
2024-12-19 2:49 ` Jakub Kicinski
2024-12-19 14:37 ` Taehee Yoo
2024-12-19 14:45 ` Jakub Kicinski
2024-12-19 15:19 ` Taehee Yoo
2024-12-19 15:28 ` Jakub Kicinski
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