netdev - Re: [PATCH net-next 00/13] mlx5: Add Interface Step Sequence ID support

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Date:	Thu, 04 Jun 2015 16:41:34 -0700 (PDT)
From:	David Miller <davem@...hat.com>
To:	ogerlitz@...lanox.com
Cc:	netdev@...r.kernel.org, majd@...lanox.com, hagaya@...lanox.com,
	talal@...lanox.com, amirv@...lanox.com
Subject: Re: [PATCH net-next 00/13] mlx5: Add Interface Step Sequence ID
 support

From: Or Gerlitz <ogerlitz@...lanox.com>
Date: Thu,  4 Jun 2015 19:30:35 +0300

> ISSI (Interface Step Sequence ID) defines the step sequence ID of the 
> interface between the driver to the firmware and is incremented by 
> steps of one. ISSI is used to enable deprecating/modifying features, 
> command interfaces and such, while maintaining compatibility.
> 
> As the driver serves both ConnectIB (CIB) and ConnectX4, we carefully 
> made sure that the IB functionality keeps running also on older CIB 
> firmware releases that don't support ISSI. 
> 
> The Ethernet functionailty is available only on ConnectX4 where all 
> firmware releases support the feature since the very basic ISSI level. 
> So at this point no need for compatility code there.
> 
> As done prior to this series, when the Ethernet functionlity is enabled, 
> during the initialization flow, the core driver performs a query of the 
> supported ISSIs using the QUERY_ISSI command, and then, if ISSI is supported, 
> sets the actual issi value informing the firmware on which ISSI level to run, 
> using SET_ISSI command.
> 
> Previously, the IB driver wasn't ready to work on that mode, and hence
> building both the IB driver and the Ethernet functionality in the core
> driver were disallowed by Kconfigs, with this series, we allow users to
> enable them both.

Series applied, thanks.
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