netdev - RE: [PATCH net-next v2] xen-netback: implement dynamic multicast control

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Date:	Tue, 2 Feb 2016 11:48:25 +0000
From:	Paul Durrant <Paul.Durrant@...rix.com>
To:	Wei Liu <wei.liu2@...rix.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
	"Ian Campbell" <Ian.Campbell@...rix.com>,
	Wei Liu <wei.liu2@...rix.com>
Subject: RE: [PATCH net-next v2] xen-netback: implement dynamic multicast
 control

> -----Original Message-----
> From: Wei Liu [mailto:wei.liu2@...rix.com]
> Sent: 02 February 2016 11:47
> To: Paul Durrant
> Cc: netdev@...r.kernel.org; xen-devel@...ts.xenproject.org; Ian Campbell;
> Wei Liu
> Subject: Re: [PATCH net-next v2] xen-netback: implement dynamic multicast
> control
> 
> On Tue, Feb 02, 2016 at 11:31:08AM +0000, Paul Durrant wrote:
> [...]
> > +static int xen_register_mcast_ctrl_watch(struct xenbus_device *dev,
> > +					 struct xenvif *vif)
> > +{
> > +	int err = 0;
> > +	char *node;
> > +	unsigned maxlen = strlen(dev->otherend) +
> > +		sizeof("/request-multicast-control");
> > +
> > +	if (vif->mcast_ctrl_watch.node)
> > +		return -EADDRINUSE;
> > +
> 
> Sorry if I didn't make myself clear enough. I think EADDRINUSE should
> also be logged.
> 

Ok. Not sure how much noise that will cause though.

  Paul

> Wei.