netdev - Re: [PATCH net v2 2/6] bnxt_en: do not allow wildcard matches for L2 flows

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Message-ID: <20180411114303.6f927c45@cakuba.netronome.com>
Date:   Wed, 11 Apr 2018 11:43:14 -0700
From:   Jakub Kicinski <kubakici@...pl>
To:     Michael Chan <michael.chan@...adcom.com>,
        Andy Gospodarek <gospo@...adcom.com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH net v2 2/6] bnxt_en: do not allow wildcard matches for
 L2 flows

On Wed, 11 Apr 2018 11:50:14 -0400, Michael Chan wrote:
> @@ -764,6 +788,41 @@ static bool bnxt_tc_can_offload(struct bnxt *bp, struct bnxt_tc_flow *flow)
>  		return false;
>  	}
>  
> +	/* Currently source/dest MAC cannot be partial wildcard  */
> +	if (bits_set(&flow->l2_key.smac, sizeof(flow->l2_key.smac)) &&
> +	    !is_exactmatch(flow->l2_mask.smac, sizeof(flow->l2_mask.smac))) {
> +		netdev_info(bp->dev, "Wildcard match unsupported for Source MAC\n");

This wouldn't be something to do in net, but how do you feel about
using extack for messages like this?

> +		return false;
> +	}