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Date: Tue, 25 May 2021 09:44:57 +0000 From: Joakim Zhang <qiangqing.zhang@....com> To: Andrew Lunn <andrew@...n.ch> CC: "davem@...emloft.net" <davem@...emloft.net>, "kuba@...nel.org" <kuba@...nel.org>, "frieder.schrempf@...tron.de" <frieder.schrempf@...tron.de>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, dl-linux-imx <linux-imx@....com> Subject: RE: [RFC net-next 2/2] net: fec: add ndo_select_queue to fix TX bandwidth fluctuations Hi Andrew, > -----Original Message----- > From: Andrew Lunn <andrew@...n.ch> > Sent: 2021年5月23日 22:39 > To: Joakim Zhang <qiangqing.zhang@....com> > Cc: davem@...emloft.net; kuba@...nel.org; frieder.schrempf@...tron.de; > netdev@...r.kernel.org; linux-kernel@...r.kernel.org; dl-linux-imx > <linux-imx@....com> > Subject: Re: [RFC net-next 2/2] net: fec: add ndo_select_queue to fix TX > bandwidth fluctuations > > > @@ -76,6 +76,8 @@ static void fec_enet_itr_coal_init(struct net_device > *ndev); > > > > #define DRIVER_NAME "fec" > > > > +static const u16 fec_enet_vlan_pri_to_queue[8] = {1, 1, 1, 1, 2, 2, 2, 2}; > > I wonder if priority 0 should be sent to queue 0? Yes, we can. But the original thought of author seems to, VLAN tagged packets only use queue 1&2, and queue 0is reserved for VLAN untagged packets. Best Regards, Joakim Zhang > Andrew
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