linux-kernel - [PATCH net-next v3 0/6] net: ethernet: ti: am65-cpsw: Add multi queue RX support

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Message-Id: <20240703-am65-cpsw-multi-rx-v3-0-f11cd860fd72@kernel.org>
Date: Wed, 03 Jul 2024 16:51:31 +0300
From: Roger Quadros <rogerq@...nel.org>
To: "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Siddharth Vadapalli <s-vadapalli@...com>, 
 Julien Panis <jpanis@...libre.com>
Cc: Simon Horman <horms@...nel.org>, Andrew Lunn <andrew@...n.ch>, 
 srk@...com, vigneshr@...com, danishanwar@...com, 
 pekka Varis <p-varis@...com>, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org, 
 Roger Quadros <rogerq@...nel.org>
Subject: [PATCH net-next v3 0/6] net: ethernet: ti: am65-cpsw: Add multi
 queue RX support

Hi,

am65-cpsw can support up to 8 queues at Rx. So far we have
been using only one queue (i.e. default flow) for all RX traffic.

This series adds multi-queue support. The driver starts with
1 RX queue by default. User can increase the RX queues via ethtool,
e.g. 'ethtool -L ethx rx <N>'

The series also adds regmap and regfield support to some of the
ALE registers. It adds Policer/Classifier registers and fields.

Converting the existing ALE control APIs to regfields can be a separate
exercise.

Some helper functions are added to read/write to the Policer/Classifier
registers and a default Classifier setup function is added that
routes packets based on their PCP/DSCP priority to different RX queues.

Signed-off-by: Roger Quadros <rogerq@...nel.org>
---
Changes in v3:
- code style fixes
- squashed patches 5 and 6
- added comment about priority to thread mapping table.
- Added Reviewed-by Simon Horman.
- Link to v2: https://lore.kernel.org/r/20240628-am65-cpsw-multi-rx-v2-0-c399cb77db56@kernel.org

Changes in v2:
- rebase to net/next
- fixed RX stall issue during iperf
- Link to v1: https://lore.kernel.org/r/20240606-am65-cpsw-multi-rx-v1-0-0704b0cb6fdc@kernel.org

---
Roger Quadros (6):
      net: ethernet: ti: am65-cpsw: Introduce multi queue Rx
      net: ethernet: ti: cpsw_ale: use regfields for ALE registers
      net: ethernet: ti: cpsw_ale: use regfields for number of Entries and Policers
      net: ethernet: ti: cpsw_ale: add Policer and Thread control register fields
      net: ethernet: ti: cpsw_ale: add policer/classifier helpers and setup defaults
      net: ethernet: ti: am65-cpsw: setup priority to flow mapping

 drivers/net/ethernet/ti/am65-cpsw-ethtool.c |  62 +++--
 drivers/net/ethernet/ti/am65-cpsw-nuss.c    | 370 ++++++++++++++++------------
 drivers/net/ethernet/ti/am65-cpsw-nuss.h    |  36 +--
 drivers/net/ethernet/ti/cpsw_ale.c          | 287 +++++++++++++++++++--
 drivers/net/ethernet/ti/cpsw_ale.h          |  62 ++++-
 5 files changed, 609 insertions(+), 208 deletions(-)
---
base-commit: 84562f9953ec5f91a4922baa2bd4f2d4f64fac31
change-id: 20240606-am65-cpsw-multi-rx-fb6cf8dea5eb

Best regards,
-- 
Roger Quadros <rogerq@...nel.org>