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Date:   Wed, 14 Oct 2020 16:30:18 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Henrik Bjoernlund <henrik.bjoernlund@...rochip.com>
Cc:     <davem@...emloft.net>, <roopa@...dia.com>, <nikolay@...dia.com>,
        <jiri@...lanox.com>, <idosch@...lanox.com>,
        <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <bridge@...ts.linux-foundation.org>,
        <UNGLinuxDriver@...rochip.com>,
        Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: Re: [PATCH net-next v5 04/10] bridge: cfm: Kernel space
 implementation of CFM. MEP create/delete.

On Mon, 12 Oct 2020 14:04:22 +0000 Henrik Bjoernlund wrote:
> +	if (config->mdlevel > 7) {
> +		NL_SET_ERR_MSG_MOD(extack,
> +				   "MD level is invalid");
> +		return -EINVAL;
> +	}
> +	/* The MEP-ID is a 13 bit field in the CCM PDU identifying the MEP */
> +	if (config->mepid > 0x1FFF) {
> +		NL_SET_ERR_MSG_MOD(extack,
> +				   "MEP-ID is invalid");
> +		return -EINVAL;
> +	}

If I'm reading patch 7 correctly these parameters come from netlink,
right? In that case please use the netlink policies to check things
like ranges or correct values.

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