From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Berg Subject: Re: multicasting netlink messages to groups > 31 from userspace Date: Wed, 04 Jul 2007 17:08:33 +0200 Message-ID: <1183561713.9662.5.camel@johannes.berg> References: <1183492286.4021.21.camel@johannes.berg> <468BAADC.4030203@trash.net> <1183558702.3812.33.camel@johannes.berg> <468BAF10.6080208@trash.net> <1183559883.3812.42.camel@johannes.berg> <468BB327.5050709@trash.net> <1183561006.3812.47.camel@johannes.berg> <468BB5F8.3080908@trash.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-WFn+P5g8RWozaj16cI6g" Cc: netdev , jamal , Thomas Graf , Herbert Xu To: Patrick McHardy Return-path: Received: from crystal.sipsolutions.net ([195.210.38.204]:38187 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755215AbXGDPHo (ORCPT ); Wed, 4 Jul 2007 11:07:44 -0400 In-Reply-To: <468BB5F8.3080908@trash.net> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org --=-WFn+P5g8RWozaj16cI6g Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Wed, 2007-07-04 at 17:00 +0200, Patrick McHardy wrote: > Not by itself probably but a user could DoS your wireless connectivity > this way. Hmm, if anything then not the connectivity but rather the MLME i.e. it won't do roaming properly maybe. Maybe we should then have a way to say that somebody only wants to receive messages from privileged users, that way the MLME process wouldn't be affected. > I'm not sure, it would probably also have to be called when userspace > unsubscribes from a group, no? No actually having that hook means I can do without multicast groups by just publishing that "send configuration requests to pid N" where N is either 0 (in-kernel MLME) or something else (userspace MLME); I just didn't know the hook existed. Not that we shouldn't fix the multicast issues anyway though the one from this particular thread wouldn't be too interesting right now until somebody needs userspace to multicast; the other three patches still should be done now before there are more generic netlink multicast users. johannes --=-WFn+P5g8RWozaj16cI6g Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iD8DBQBGi7fx/ETPhpq3jKURApQMAKCgpJ67ScJNJOdSWkpqhJ0E1T9tHACgtVVN 9YqA1ORKAcJOaKTyKg9IZA4= =dRcS -----END PGP SIGNATURE----- --=-WFn+P5g8RWozaj16cI6g--