From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
To: Aaro Koskinen <aaro.koskinen@iki.fi>,
"David S. Miller" <davem@davemloft.net>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
Jose Abreu <joabreu@synopsys.com>,
Thor Thayer <thor.thayer@linux.intel.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Aaro Koskinen <aaro.koskinen@nokia.com>
Subject: Re: [PATCH 1/2] net: stmmac: don't set own bit too early for jumbo frames
Date: Fri, 15 Mar 2019 11:45:40 +0300 [thread overview]
Message-ID: <c2141562-f1a8-f2ee-a12a-9d6819ee9cd2@cogentembedded.com> (raw)
In-Reply-To: <20190314194320.25566-1-aaro.koskinen@iki.fi>
Hello!
On 14.03.2019 22:43, Aaro Koskinen wrote:
> From: Aaro Koskinen <aaro.koskinen@nokia.com>
>
> Commit 0e80bdc9a72d ("stmmac: first frame prep at the end of xmit
> routine") overlooked jumbo frames when re-ordering the code, and as a
> result the own bit was not getting set anymore for the first jumbo frame
> descriptor. Commit 487e2e22ab79 ("net: stmmac: Set OWN bit for jumbo
> frames") tried to fix this, but now the bit is getting set too early and
> the DMA may start while we are still setting up the remaing descriptors.
Remaining?
> And with the chain mode the own bit remains still unset.
>
> Fix by setting the own bit at the end of xmit also with jumbo frames.
>
> Fixes: 0e80bdc9a72d ("stmmac: first frame prep at the end of xmit routine")
> Fixes: 487e2e22ab79 ("net: stmmac: Set OWN bit for jumbo frames")
> Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
[...]
MBR, Sergei
next prev parent reply other threads:[~2019-03-15 8:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-14 19:43 [PATCH 1/2] net: stmmac: don't set own bit too early for jumbo frames Aaro Koskinen
2019-03-14 19:43 ` [PATCH 2/2] net: stmmac: fix jumbo frame sending with non-linear skbs Aaro Koskinen
2019-03-15 9:50 ` Jose Abreu
2019-03-15 18:39 ` David Miller
2019-03-15 8:45 ` Sergei Shtylyov [this message]
2019-03-15 9:47 ` [PATCH 1/2] net: stmmac: don't set own bit too early for jumbo frames Jose Abreu
2019-03-15 18:39 ` David Miller
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