linux-kernel - Re: [PATCH net-next 1/7] net: dsa: add support for switchdev VLAN objects

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Message-ID: <20150814005523.GA5596@lunn.ch>
Date:	Fri, 14 Aug 2015 02:55:23 +0200
From:	Andrew Lunn <andrew@...n.ch>
To:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...oirfairelinux.com,
	"David S. Miller" <davem@...emloft.net>,
	Guenter Roeck <linux@...ck-us.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Scott Feldman <sfeldma@...il.com>,
	Jiri Pirko <jiri@...nulli.us>, Chris Healy <cphealy@...il.com>
Subject: Re: [PATCH net-next 1/7] net: dsa: add support for switchdev VLAN
 objects

On Thu, Aug 13, 2015 at 05:01:57PM -0400, Vivien Didelot wrote:
> Hi Andrew,
> 
> On 15-08-13 22:16:08, Andrew Lunn wrote:
> > On Thu, Aug 13, 2015 at 12:52:17PM -0400, Vivien Didelot wrote:
> > > Add new functions in DSA drivers to access hardware VLAN entries through
> > > SWITCHDEV_OBJ_PORT_VLAN objects:
> > > 
> > >  - port_pvid_get() and vlan_getnext() to dump a VLAN
> > >  - port_vlan_del() to exclude a port from a VLAN
> > >  - port_pvid_set() and port_vlan_add() to join a port to a VLAN
> > > 
> > > The DSA infrastructure will ensure that each VLAN of the given range
> > > does not already belong to another bridge. If it does, it will fallback
> > > to software VLAN and won't program the hardware.
> > > 
> > > Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
> > > ---
> > >  include/net/dsa.h |  11 ++++
> > >  net/dsa/slave.c   | 158 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
> > >  2 files changed, 169 insertions(+)
> > > 
> > > diff --git a/include/net/dsa.h b/include/net/dsa.h
> > > index 6356f43..bd9b765 100644
> > > --- a/include/net/dsa.h
> > > +++ b/include/net/dsa.h
> > > @@ -298,6 +298,17 @@ struct dsa_switch_driver {
> > >  				   u8 state);
> > >  
> > >  	/*
> > > +	 * VLAN support
> > > +	 */
> > > +	int	(*port_pvid_get)(struct dsa_switch *ds, int port, u16 *pvid);
> > > +	int	(*port_pvid_set)(struct dsa_switch *ds, int port, u16 pvid);
> > > +	int	(*port_vlan_add)(struct dsa_switch *ds, int port, u16 vid,
> > > +				 bool untagged);
> > > +	int	(*port_vlan_del)(struct dsa_switch *ds, int port, u16 vid);
> > > @@ -794,6 +949,9 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
> > >  	.ndo_netpoll_cleanup	= dsa_slave_netpoll_cleanup,
> > >  	.ndo_poll_controller	= dsa_slave_poll_controller,
> > >  #endif
> > > +	.ndo_bridge_getlink	= switchdev_port_bridge_getlink,
> > > +	.ndo_bridge_setlink	= switchdev_port_bridge_setlink,
> > > +	.ndo_bridge_dellink	= switchdev_port_bridge_dellink,
> > >  };
> > 
> > Do these changes belong here?
> 
> Yes, these are used by switchdev to access bridge requests and exchange
> SWITCHDEV_OBJ_PORT_VLAN objects with DSA, through the its switchdev_ops.

O.K, so if a v2 is needed, please mention this in the change log. It
was not obvious to me.

    Thanks
	Andrew
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