netdev - Re: [PATCH net-next v5] net: ti: icssg_prueth: add TAPRIO offload support

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Message-ID: <20240501151726.GU2575892@kernel.org>
Date: Wed, 1 May 2024 16:17:26 +0100
From: Simon Horman <horms@...nel.org>
To: MD Danish Anwar <danishanwar@...com>
Cc: Dan Carpenter <dan.carpenter@...aro.org>, Andrew Lunn <andrew@...n.ch>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	Niklas Schnelle <schnelle@...ux.ibm.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Diogo Ivo <diogo.ivo@...mens.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Vignesh Raghavendra <vigneshr@...com>,
	Richard Cochran <richardcochran@...il.com>,
	Roger Quadros <rogerq@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	"David S. Miller" <davem@...emloft.net>,
	linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, srk@...com, r-gunasekaran@...com,
	Roger Quadros <rogerq@...com>,
	Vinicius Costa Gomes <vinicius.gomes@...el.com>,
	Vladimir Oltean <vladimir.oltean@....com>
Subject: Re: [PATCH net-next v5] net: ti: icssg_prueth: add TAPRIO offload
 support

On Mon, Apr 29, 2024 at 04:00:22PM +0530, MD Danish Anwar wrote:
> From: Roger Quadros <rogerq@...com>
> 
> ICSSG dual-emac f/w supports Enhanced Scheduled Traffic (EST – defined
> in P802.1Qbv/D2.2 that later got included in IEEE 802.1Q-2018)
> configuration. EST allows express queue traffic to be scheduled
> (placed) on the wire at specific repeatable time intervals. In
> Linux kernel, EST configuration is done through tc command and
> the taprio scheduler in the net core implements a software only
> scheduler (SCH_TAPRIO). If the NIC is capable of EST configuration,
> user indicate "flag 2" in the command which is then parsed by
> taprio scheduler in net core and indicate that the command is to
> be offloaded to h/w. taprio then offloads the command to the
> driver by calling ndo_setup_tc() ndo ops. This patch implements
> ndo_setup_tc() to offload EST configuration to ICSSG.
> 
> Also move icss_iep structure and it's dependencies to icss_iep.h in
> order to access iep->def_inc from driver files.
> 
> Signed-off-by: Roger Quadros <rogerq@...com>
> Signed-off-by: Vignesh Raghavendra <vigneshr@...com>
> Signed-off-by: MD Danish Anwar <danishanwar@...com>

Reviewed-by: Simon Horman <horms@...nel.org>