netdev - Re: [PATCH net-next v3 0/2] net: ethernet: ti: am65-cpsw: enable DSCP to priority map for RX

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Message-ID: <ZzVCDZR8a/xchDU6@debian>
Date: Thu, 14 Nov 2024 01:19:25 +0100
From: Guillaume Nault <gnault@...hat.com>
To: Simon Horman <horms@...nel.org>
Cc: Roger Quadros <rogerq@...nel.org>,
	Siddharth Vadapalli <s-vadapalli@...com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	linux-omap@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, srk@...com,
	Pekka Varis <p-varis@...com>, Ido Schimmel <idosch@...sch.org>
Subject: Re: [PATCH net-next v3 0/2] net: ethernet: ti: am65-cpsw: enable
 DSCP to priority map for RX

On Tue, Nov 12, 2024 at 02:08:33PM +0000, Simon Horman wrote:
> + Ido and Guilliame
> 
> On Sat, Nov 09, 2024 at 01:00:06PM +0200, Roger Quadros wrote:
> > Configure DSCP to Priority mapping registers so that IP precedence
> > field (top 3 bits of DSCP) map it to one of the 8 priority queues
> > for RX traffic.
> >     
> > Also update Priority to Thread maping to be compliant with
> > IEEE802.1Q-2014. Priority Code Point (PCP) 2 is higher priority than
> > PCP 0 (Best Effort). PCP 1 (Background) is lower priority than
> > PCP 0 (Best Effort).
> > 
> > Signed-off-by: Roger Quadros <rogerq@...nel.org>
> 
> Hi Ido and Guilliame,
> 
> I am wondering if you could find time to review this series.

I don't have the IEEE802.1Q-2014 spec at hand, so I focused on
patch 2/2.

> > ---
> > Changes in v3:
> > - Added Reviewed-by tag to patch 1
> > - Added macros for DSCP PRI field size and DSCP PRI per register
> > - Drop unnecessary readl() in am65_cpsw_port_set_dscp_map()
> > - Link to v2: https://lore.kernel.org/r/20241107-am65-cpsw-multi-rx-dscp-v2-0-9e9cd1920035@kernel.org
> > 
> > Changes in v2:
> > - Updated references to more recent standard IEEE802.1Q-2014.
> > - Dropped reference to web link which might change in the future.
> > - Typo fix in commit log.
> > - Link to v1: https://lore.kernel.org/r/20241105-am65-cpsw-multi-rx-dscp-v1-0-38db85333c88@kernel.org
> > 
> > ---
> > Roger Quadros (2):
> >       net: ethernet: ti: am65-cpsw: update pri_thread_map as per IEEE802.1Q-2014
> >       net: ethernet: ti: am65-cpsw: enable DSCP to priority map for RX
> > 
> >  drivers/net/ethernet/ti/am65-cpsw-nuss.c | 54 ++++++++++++++++++++++++++++++++
> >  drivers/net/ethernet/ti/cpsw_ale.c       | 36 ++++++++++++---------
> >  2 files changed, 76 insertions(+), 14 deletions(-)
> > ---
> > base-commit: 42f7652d3eb527d03665b09edac47f85fb600924
> > change-id: 20241101-am65-cpsw-multi-rx-dscp-000b2c4af6d0
> > 
> > Best regards,
> > -- 
> > Roger Quadros <rogerq@...nel.org>
> > 
>