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Date: Fri, 15 Mar 2019 09:50:15 +0000 From: Jose Abreu <jose.abreu@...opsys.com> To: Aaro Koskinen <aaro.koskinen@....fi>, "David S. Miller" <davem@...emloft.net>, Giuseppe Cavallaro <peppe.cavallaro@...com>, Alexandre Torgue <alexandre.torgue@...com>, Jose Abreu <jose.abreu@...opsys.com>, Thor Thayer <thor.thayer@...ux.intel.com>, <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org> CC: Aaro Koskinen <aaro.koskinen@...ia.com> Subject: Re: [PATCH 2/2] net: stmmac: fix jumbo frame sending with non-linear skbs On 3/14/2019 7:43 PM, Aaro Koskinen wrote: > From: Aaro Koskinen <aaro.koskinen@...ia.com> > > When sending non-linear skbs with jumbo frames, we set up the non-paged > data and mark that as a last segment, although the paged fragments are > also prepared. This will stall the TX queue and trigger a watchdog warning > (a simple reproducer is to run an iperf client mode TCP test with a large > MTU - networking fails instantly). > > Fix by checking if the skb is non-linear. > > Signed-off-by: Aaro Koskinen <aaro.koskinen@...ia.com> Acked-by: Jose Abreu <joabreu@...opsys.com> Thanks, Jose Miguel Abreu
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