netdev - Re: [PATCH] net: phy: b53: switchdev driver for Broadcom BCM53xx switches

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Message-ID: <20150226151830.GD8806@lunn.ch>
Date:	Thu, 26 Feb 2015 16:18:30 +0100
From:	Andrew Lunn <andrew@...n.ch>
To:	Rafa?? Mi??ecki <zajec5@...il.com>
Cc:	Florian Fainelli <f.fainelli@...il.com>,
	Andy Gospodarek <gospo@...ulusnetworks.com>,
	"David S. Miller" <davem@...emloft.net>,
	Network Development <netdev@...r.kernel.org>,
	Jonas Gorski <jogo@...nwrt.org>,
	Hauke Mehrtens <hauke@...ke-m.de>,
	Felix Fietkau <nbd@...nwrt.org>, Jiri Pirko <jiri@...nulli.us>
Subject: Re: [PATCH] net: phy: b53: switchdev driver for Broadcom BCM53xx
 switches

On Thu, Feb 26, 2015 at 03:58:40PM +0100, Rafa?? Mi??ecki wrote:
> On 25 February 2015 at 15:19, Andrew Lunn <andrew@...n.ch> wrote:
> >> What do you mean by these recent patches? Has DSA recently received a
> >> support for bridging ports in the hardware? Like setting VLANs using
> >> some "bridge" comment (nl API) or something? Because I'm not aware of
> >> that.
> >
> > Yes. Scan over netdev list for the last week. e.g:
> >
> > http://comments.gmane.org/gmane.linux.network/350754
> 
> Hm, I can see it was actually merged to the net-next already:
> https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=bb66be1c549a0760500cfad404b3d79a136d0e44
> 
> But this dsa implementation is still totally unclear to me. So I can
> see we now have
> 1) port_join_bridge
> 2) port_leave_bridge
> 
> How does it allow me to bridge few ports with specifying PVID /
> (UN)TAG for some of them?

How about going back to the beginning. Look at the Starfigher 2 DSA
driver. Do you have similar registers? Can you map the Starfigher code
onto the b53 registers? If so, just write a new driver following the
Starfigher as a reference.

     Andrew
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