netdev - Re: [PATCH v2 net-next 01/12] net/sched: taprio: allow user input of per-tc max SDU

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Message-ID: <20220926133829.6bb62b8a@kernel.org>
Date:   Mon, 26 Sep 2022 13:38:29 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        Rui Sousa <rui.sousa@....com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        UNGLinuxDriver@...rochip.com,
        Horatiu Vultur <horatiu.vultur@...rochip.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Michael Walle <michael@...le.cc>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        Maxim Kochetkov <fido_max@...ox.ru>,
        Colin Foster <colin.foster@...advantage.com>,
        Richie Pearn <richard.pearn@....com>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Vladimir Oltean <olteanv@...il.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Gerhard Engleder <gerhard@...leder-embedded.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 net-next 01/12] net/sched: taprio: allow user input
 of per-tc max SDU

On Fri, 23 Sep 2022 19:32:59 +0300 Vladimir Oltean wrote:
> +	if (!tb[TCA_TAPRIO_TC_ENTRY_INDEX]) {
> +		NL_SET_ERR_MSG_MOD(extack, "TC entry index missing");

NL_SET_ERR_ATTR_MISS() ?

> +		return -EINVAL;
> +	}
> +
> +	tc = nla_get_u32(tb[TCA_TAPRIO_TC_ENTRY_INDEX]);
> +	if (tc >= TC_QOPT_MAX_QUEUE) {
> +		NL_SET_ERR_MSG_MOD(extack, "TC entry index out of range");

NLA_POLICY_MAX()

Are you not using those on purpose? :(