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Date: Sat, 19 Dec 2009 10:45:32 +0100 From: Stefano Salsano <stefano.salsano@...roma2.it> To: David Miller <davem@...emloft.net> CC: netdev@...r.kernel.org, fabio.ludovici@...oo.it, Stephen Hemminger <shemminger@...tta.com> Subject: Re: [PATCH] netem/iproute2 solving correlated loss issues [0/5] David Miller wrote: >> The patch is backward compatible, we have not removed the previous... > > To heck it is! > The changed version of iproute2 will not work without the kernel > changes installed. The kernel validates the size of the structures > passed in, you can't change the user visible interface like this. David Miller wrote: > Furthermore it is fundamentally flawed in it's implementation > in that the user exported data structures cannot be changed, > you cannot change the layout and you absolutely cannot > change the size of these things or else various tool and > kernel combinations stop working. thank you for raising these fundamental issues ! we will address them and resubmit the patch when done... > Add new netlink attributes to extend things, that's the "real" > backwards compatible way to make changes to netlink interfaces. point taken -- ******************************************************************* Stefano Salsano Dipartimento Ingegneria Elettronica Universita' di Roma "Tor Vergata" Via del Politecnico, 1 - 00133 Roma - ITALY http://netgroup.uniroma2.it/Stefano_Salsano/ E-mail : stefano.salsano@...roma2.it Cell. : +39 320 4307310 Office : (Tel.) +39 06 72597770 (Fax.) +39 06 72597435 ******************************************************************* -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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