From: Jakub Kicinski <kuba@kernel.org>
To: Johan Alvarado <contact@c127.dev>
Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
pabeni@redhat.com, mcoquelin.stm32@gmail.com,
alexandre.torgue@foss.st.com, Jose.Abreu@synopsys.com,
pavel@ucw.cz, netdev@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net] net: stmmac: raise TX completion interrupt at the end of an xmit burst
Date: Mon, 20 Jul 2026 17:35:57 -0700 [thread overview]
Message-ID: <20260720173557.09e322d7@kernel.org> (raw)
In-Reply-To: <0100019f35ea26e0-42ad009c-01ab-4a8f-b126-fa65fbacae5c-000000@email.amazonses.com>
On Mon, 6 Jul 2026 05:32:45 +0000 Johan Alvarado wrote:
> The TX mitigation logic only sets the Interrupt on Completion bit once
> every tx_coal_frames descriptors (STMMAC_TX_FRAMES = 25), with the
> tx_coal_timer hrtimer (STMMAC_COAL_TX_TIMER = 5000 us) as the only
> fallback. TX skbs are freed exclusively from the TX completion path,
> so any flow that keeps fewer than 25 frames in flight has all of its
> skbs held for up to 5 ms after transmission.
The netdev patch queue has overflown.
If these patches are still relevant you'll have to repost them.
prev parent reply other threads:[~2026-07-21 0:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-06 5:32 [PATCH net] net: stmmac: raise TX completion interrupt at the end of an xmit burst Johan Alvarado
2026-07-06 11:04 ` Maciej Fijalkowski
2026-07-06 19:35 ` Johan Alvarado
2026-07-21 0:35 ` Jakub Kicinski [this message]
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=20260720173557.09e322d7@kernel.org \
--to=kuba@kernel.org \
--cc=Jose.Abreu@synopsys.com \
--cc=alexandre.torgue@foss.st.com \
--cc=andrew+netdev@lunn.ch \
--cc=contact@c127.dev \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-stm32@st-md-mailman.stormreply.com \
--cc=mcoquelin.stm32@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=pavel@ucw.cz \
/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