netdev - Re: [PATCH v2 net] net/sched: make dev_trans_start() have a better chance of working with stacked interfaces

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Message-ID: <20220727084404.34ebf5e6@hermes.local>
Date:   Wed, 27 Jul 2022 08:44:04 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jonathan Toppins <jtoppins@...hat.com>,
        Jay Vosburgh <j.vosburgh@...il.com>,
        Veaceslav Falico <vfalico@...il.com>,
        Hangbin Liu <liuhangbin@...il.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Brian Hutchinson <b.hutchman@...il.com>
Subject: Re: [PATCH v2 net] net/sched: make dev_trans_start() have a better
 chance of working with stacked interfaces

On Wed, 27 Jul 2022 18:20:00 +0300
Vladimir Oltean <vladimir.oltean@....com> wrote:

> +	do {
> +		have_lowers = false;
> +
> +		netdev_for_each_lower_dev(dev, lower, iter) {
> +			have_lowers = true;
> +			dev = lower;
> +			break;
> +		}
> +	} while (have_lower

Would be clearer if this was a helper function.
Something like dev_leaf_device?