linux-kernel - Re: [PATCH net-next v5 05/15] net: macsec: hardware offloading infrastructure

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Message-ID: <20200113145947.GC3078@kwain>
Date:   Mon, 13 Jan 2020 15:59:47 +0100
From:   Antoine Tenart <antoine.tenart@...tlin.com>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     Antoine Tenart <antoine.tenart@...tlin.com>, davem@...emloft.net,
        sd@...asysnail.net, andrew@...n.ch, f.fainelli@...il.com,
        hkallweit1@...il.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com,
        alexandre.belloni@...tlin.com, allan.nielsen@...rochip.com,
        camelia.groza@....com, Simon.Edelhaus@...antia.com,
        Igor.Russkikh@...antia.com, jakub.kicinski@...ronome.com
Subject: Re: [PATCH net-next v5 05/15] net: macsec: hardware offloading
 infrastructure

On Mon, Jan 13, 2020 at 03:57:58PM +0100, Antoine Tenart wrote:
> On Mon, Jan 13, 2020 at 03:34:52PM +0100, Jiri Pirko wrote:
> > Fri, Jan 10, 2020 at 05:20:00PM CET, antoine.tenart@...tlin.com wrote:
> 
> > >+/* Checks if underlying layers implement MACsec offloading functions. */
> > >+static bool macsec_check_offload(enum macsec_offload offload,
> > >+				 struct macsec_dev *macsec)
> > >+{
> > >+	if (!macsec || !macsec->real_dev)
> > >+		return false;
> > >+
> > >+	if (offload == MACSEC_OFFLOAD_PHY)
> > 
> > You have a helper for this already - macsec_is_offloaded(). No need for
> > "offload" arg then.
> 
> Same here, except the _PHY case is different from the _MAC one. So the
> check needs to be specific to _PHY.

Also 'offload' here can be different from the one stored in the macsec
structure.

> 
> > >+		return macsec->real_dev->phydev &&
> > >+		       macsec->real_dev->phydev->macsec_ops;
> > >+
> > >+	return false;
> > >+}

-- 
Antoine Ténart, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com