linux-kernel - RE: [PATCH net-next 1/2] mqprio: Add a new hardware offload type in mqprio

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Message-ID: <AM0PR0502MB3683208C0F411F67C70BF6B1BF4B0@AM0PR0502MB3683.eurprd05.prod.outlook.com>
Date:   Thu, 12 Oct 2017 20:10:28 +0000
From:   Yuval Mintz <yuvalm@...lanox.com>
To:     Yunsheng Lin <linyunsheng@...wei.com>,
        "davem@...emloft.net" <davem@...emloft.net>
CC:     "huangdaode@...ilicon.com" <huangdaode@...ilicon.com>,
        "xuwei5@...ilicon.com" <xuwei5@...ilicon.com>,
        "liguozhu@...ilicon.com" <liguozhu@...ilicon.com>,
        "Yisen.Zhuang@...wei.com" <Yisen.Zhuang@...wei.com>,
        "gabriele.paoloni@...wei.com" <gabriele.paoloni@...wei.com>,
        "john.garry@...wei.com" <john.garry@...wei.com>,
        "linuxarm@...wei.com" <linuxarm@...wei.com>,
        "yisen.zhuang@...wei.com" <yisen.zhuang@...wei.com>,
        "salil.mehta@...wei.com" <salil.mehta@...wei.com>,
        "lipeng321@...wei.com" <lipeng321@...wei.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH net-next 1/2] mqprio: Add a new hardware offload type in
 mqprio

> When a driver supports both dcb and hardware offloaded mqprio, and
> user is running mqprio and dcb tool concurrently, the configuration
> set by each tool may be conflicted with each other because the dcb
(for second 'each') s/each/the

> and mqprio may be using the same hardwere offload component and share
s/hardwere/hardware

> the tc system in the network stack.
> 
> This patch adds a new offload type to indicate that the underlying
> driver offload prio mapping as part of DCB. If the driver would be
'should' offload

> incapable of that it would refuse the offload. User would then have
> to explicitly request that qdisc offload.