From: Kurt Kanzenbach <kurt@linutronix.de>
To: Vladimir Oltean <vladimir.oltean@nxp.com>, netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Jamal Hadi Salim <jhs@mojatatu.com>,
Cong Wang <xiyou.wangcong@gmail.com>,
Jiri Pirko <jiri@resnulli.us>,
Vinicius Costa Gomes <vinicius.gomes@intel.com>,
Gerhard Engleder <gerhard@engleder-embedded.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next 3/3] net/sched: taprio: dynamic max_sdu larger than the max_mtu is unlimited
Date: Thu, 16 Feb 2023 10:28:48 +0100 [thread overview]
Message-ID: <87cz6aot67.fsf@kurt> (raw)
In-Reply-To: <20230215224632.2532685-4-vladimir.oltean@nxp.com>
[-- Attachment #1: Type: text/plain, Size: 586 bytes --]
On Thu Feb 16 2023, Vladimir Oltean wrote:
> It makes no sense to keep randomly large max_sdu values, especially if
> larger than the device's max_mtu. These are visible in "tc qdisc show".
> Such a max_sdu is practically unlimited and will cause no packets for
> that traffic class to be dropped on enqueue.
>
> Just set max_sdu_dynamic to U32_MAX, which in the logic below causes
> taprio to save a max_frm_len of U32_MAX and a max_sdu presented to user
> space of 0 (unlimited).
>
> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Doesn't this deserve a Fixes tag as well?
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 857 bytes --]
next prev parent reply other threads:[~2023-02-16 9:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-15 22:46 [PATCH net-next 0/3] taprio queueMaxSDU fixes Vladimir Oltean
2023-02-15 22:46 ` [PATCH net-next 1/3] net/sched: taprio: fix calculation of maximum gate durations Vladimir Oltean
2023-02-16 9:27 ` Kurt Kanzenbach
2023-02-15 22:46 ` [PATCH net-next 2/3] net/sched: taprio: don't allow dynamic max_sdu to go negative after stab adjustment Vladimir Oltean
2023-02-16 9:27 ` Kurt Kanzenbach
2023-02-15 22:46 ` [PATCH net-next 3/3] net/sched: taprio: dynamic max_sdu larger than the max_mtu is unlimited Vladimir Oltean
2023-02-16 9:28 ` Kurt Kanzenbach [this message]
2023-02-16 10:29 ` Vladimir Oltean
2023-02-16 10:34 ` Kurt Kanzenbach
2023-02-16 10:35 ` Vladimir Oltean
2023-02-20 8:00 ` [PATCH net-next 0/3] taprio queueMaxSDU fixes patchwork-bot+netdevbpf
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=87cz6aot67.fsf@kurt \
--to=kurt@linutronix.de \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=gerhard@engleder-embedded.com \
--cc=jhs@mojatatu.com \
--cc=jiri@resnulli.us \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=vinicius.gomes@intel.com \
--cc=vladimir.oltean@nxp.com \
--cc=xiyou.wangcong@gmail.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;
as well as URLs for NNTP newsgroup(s).