netdev - Re: [PATCH net-next 12/12] net/mlx5e: Disable link up on INIT HCA command

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Message-ID: <CALzJLG8Jo5sk=CiHAUDF43RZDGQ1LKRbZftYDpzsO3QJsWx-uA@mail.gmail.com>
Date:	Sun, 24 Apr 2016 00:24:23 +0300
From:	Saeed Mahameed <saeedm@....mellanox.co.il>
To:	Or Gerlitz <gerlitz.or@...il.com>
Cc:	Ido Schimmel <idosch@...lanox.com>,
	Saeed Mahameed <saeedm@...lanox.com>,
	"David S. Miller" <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Tal Alon <talal@...lanox.com>,
	Eran Ben Elisha <eranbe@...lanox.com>,
	Eugenia Emantayev <eugenia@...lanox.com>,
	Jiri Pirko <jiri@...lanox.com>, Elad Raz <eladr@...lanox.com>
Subject: Re: [PATCH net-next 12/12] net/mlx5e: Disable link up on INIT HCA command

On Sat, Apr 23, 2016 at 11:28 PM, Or Gerlitz <gerlitz.or@...il.com> wrote:
> On Sat, Apr 23, 2016 at 11:21 PM, Saeed Mahameed
> <saeedm@....mellanox.co.il> wrote:
>> On Sat, Apr 23, 2016 at 7:00 PM, Ido Schimmel <idosch@...lanox.com> wrote:
>
>>> Also, why is this directed at net-next?
>
>> it is kind of new behavior, and not a bug fix.
>
> Saeed,
>
> We should be aiming to patch the driver around this issue with
> something that goes all the way back through -stable to the very 1st
> upstream kernel supporting mlx5 EN --- the operational link doesn't go
> down when instructed by the admin and this is an entry level
> requirement from Ethernet of things (such as NIC and Switch ports).

Well, this feature requires updating mlx5_ifc, which was done in
earlier patch which added disable_link_up[0x1] bit,
I think it is doable, but it will introduce a conflict that Dave might
need to solve by not taking this bit from the patch I will send to net
if we decide to do so,
are you saying that i need to drop this patch and submit it to net ?