linux-kernel - Re: [PATCH] qeth: Default to allow promiscuous mode

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Message-Id: <201603181207.u2IC7muq030383@d06av10.portsmouth.uk.ibm.com>
Date:	Fri, 18 Mar 2016 13:07:34 +0000
From:	"Evgeny Cherkashin" <Eugene.Crosser@...ibm.com>
To:	Alexander Graf <agraf@...e.de>
Cc:	linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
	heicars2@...ux.vnet.ibm.com, mschwid2@...ux.vnet.ibm.com,
	Ursula Braun <ubraun@...ux.vnet.ibm.com>, ihno@...e.de,
	mt@...e.com, pwieczorkiewicz@...e.de,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] qeth: Default to allow promiscuous mode

Hello Alexander,

-----Alexander Graf <agraf@...e.de> wrote: -----

send it explicitly if that makes it move obvious, sure.
>
>> 3. The patch should probably go via the -networking maillist.
>
>Ah, get_maintainers.pl didn't list it. You may want to send a patch
>for
>the MAINTAINERS file here :).

My mistake, you've sent it to the right place.

About the nature of the patch:

- Enabling bridgeport on adaptors on which bridgeport is already used by somebody else will break somebody else's operation.

- Therefore, system administrator must only enable bridgeport on adaptors on which nobody else tries to use it (without coordinating with them).

- Making bridge_reflect_promisc enabled by default makes it impossible.

- Therefore, bridge_reflect_promisc must not be enabled by default.

(Those who enable bridge_reflect_promisc blindly on all adaptors will break their users' setup, and will have to deal with the consequences.)

Regards,

Evgeny Cherkashin / Евгений Черкашин / Eugene Crosser (preferred)
Software Engineer, IBM Science and Technology Center, Linux on z-Systems Development
tel. +7 495 775 8800 ext.1103, Moscow 123317, Presnenskaya emb. 10