Message-ID: <1360072210.8376.9.camel@jlt4.sipsolutions.net> (sfid-20130205_144950_996774_14518D3F)
Subject: Re: [RFC] cfg80211: configuration for WoWLAN over TCP
From: Johannes Berg <johannes@sipsolutions.net>
To: Pontus Fuchs <pontus.fuchs@gmail.com>
Cc: linux-wireless@vger.kernel.org
Date: Tue, 05 Feb 2013 14:50:10 +0100
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On Tue, 2013-02-05 at 14:47 +0100, Pontus Fuchs wrote:
> On 2013-02-05 12:06, Johannes Berg wrote:
> >
> > Intel Wireless devices are able to make a TCP connection
> > after suspending, sending some data and waking up when
> > the connection receives wakeup data (or breaks). Add the
> > WoWLAN configuration and feature advertising API for it.
> >
> 
> What's protecting this feature from stomping on an existing connection 
> when specifying the source port?

Nothing. Presumably if you specify it you know what you're doing, and
don't also create a connection to the same IP from the same port?

Hmm. Maybe we could allocate the socket anyway and make it allocate the
chosen port, failing if it isn't available? I guess I need to check the
APIs.

johannes