netdev - Re: [PATCH v4 1/3] VSOCK: Add vsockmon tap functions

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Message-ID: <20170420142427.GB28450@stefanha-x1.localdomain>
Date:   Thu, 20 Apr 2017 15:24:27 +0100
From:   Stefan Hajnoczi <stefanha@...hat.com>
To:     "Jorgen S. Hansen" <jhansen@...are.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Zhu Yanjun <zyjzyj2000@...il.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Gerard Garcia <ggarcia@...a.uab.cat>
Subject: Re: [PATCH v4 1/3] VSOCK: Add vsockmon tap functions

On Thu, Apr 20, 2017 at 12:27:37PM +0000, Jorgen S. Hansen wrote:
> 
> > On Apr 13, 2017, at 6:18 PM, Stefan Hajnoczi <stefanha@...hat.com> wrote:
> > 
> > +
> > +static void __vsock_deliver_tap(struct sk_buff *skb)
> > +{
> > +	int ret;
> > +	struct vsock_tap *tmp;
> > +
> > +	list_for_each_entry_rcu(tmp, &vsock_tap_all, list) {
> > +		ret = __vsock_deliver_tap_skb(skb, tmp->dev);
> > +		if (unlikely(ret))
> > +			break;
> > +	}
> > +
> > +	consume_skb(skb);
> 
> It looks like the caller will allocate the skb regardless of whether vsock_tap_all is empty, so shouldn’t the skb be consumed in vsock_deliver_tap?

You are right.  Thanks!

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