RE: [PATCH v4 2/6] staging: fsl-dpaa2/ethsw: Add Freescale DPAA2 Ethernet Switch driver

[Razvan Stefanescu]

> -----Original Message-----
> From: Andrew Lunn [mailto:and...@lunn.ch]
> Sent: Monday, March 12, 2018 4:37 PM
> To: Razvan Stefanescu <razvan.stefane...@nxp.com>
> Cc: gre...@linuxfoundation.org; de...@driverdev.osuosl.org; linux-
> ker...@vger.kernel.org; net...@vger.kernel.org; Alexander Graf
> <ag...@suse.de>; a...@arndb.de; Alexandru Marginean
> <alexandru.margin...@nxp.com>; Ruxandra Ioana Ciocoi Radulescu
> <ruxandra.radule...@nxp.com>; Ioana Ciornei <ioana.cior...@nxp.com>;
> Laurentiu Tudor <laurentiu.tu...@nxp.com>; stuyo...@gmail.com
> Subject: Re: [PATCH v4 2/6] staging: fsl-dpaa2/ethsw: Add Freescale DPAA2
> Ethernet Switch driver
> 
> > +static int port_netdevice_event(struct notifier_block *unused,
> > +                           unsigned long event, void *ptr)
> > +{
> > +   struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
> > +   struct netdev_notifier_changeupper_info *info = ptr;
> > +   struct net_device *upper_dev;
> > +   int err = 0;
> > +
> > +   if (netdev->netdev_ops != &ethsw_port_ops)
> > +           return NOTIFY_DONE;
> > +
> > +   /* Handle just upper dev link/unlink for the moment */
> > +   if (event == NETDEV_CHANGEUPPER) {
> > +           upper_dev = info->upper_dev;
> > +           if (netif_is_bridge_master(upper_dev)) {
> > +                   if (info->linking)
> > +                           err = port_bridge_join(netdev);
> > +                   else
> > +                           err = port_bridge_leave(netdev);
> > +           }
> > +   }
> > +
> > +   return notifier_from_errno(err);
> > +}
> 
> I could be missing something here, but don't you need to pass to
> port_bridge_join() which bridge the port is joining. There can be
> multiple bridges, so you need to ensure the port joins the correct
> bridge.
> 
Thank you for noticing this. I'll add proper checks in next version.

        Razvan

>       Andrew