[RFC,net-next,0/7] net: ethernet: ti: am65-cpsw: Add multi queue RX support

Message

Roger Quadros June 6, 2024, 12:09 p.m. UTC

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 ethx -L 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.

'RFC' because I had to revert the RX coalesing patch [1] to
apply this series. I still need to work out how this will work
together with RX coalescing. Series is based on v6.9

[1] e4918f9d4882 ("net: ethernet: ti: am65-cpsw: add sw tx/rx irq coalescing based on hrtimers")

Signed-off-by: Roger Quadros <[e-mail]>
---
Roger Quadros (7):
      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
      net: ethernet: ti: cpsw_ale: add helper to setup classifier defaults
      net: ethernet: ti: am65-cpsw: setup priority to flow mapping

 drivers/net/ethernet/ti/am65-cpsw-ethtool.c |   5 +-
 drivers/net/ethernet/ti/am65-cpsw-nuss.c    | 197 +++++++++++---------
 drivers/net/ethernet/ti/am65-cpsw-nuss.h    |  25 ++-
 drivers/net/ethernet/ti/cpsw_ale.c          | 273 +++++++++++++++++++++++++---
 drivers/net/ethernet/ti/cpsw_ale.h          |  62 ++++++-
 5 files changed, 437 insertions(+), 125 deletions(-)
---
base-commit: bc4f675ad79dd6f081e36ca45b27eac8ee60e29f
change-id: 20240606-am65-cpsw-multi-rx-fb6cf8dea5eb

Best regards,