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@xxxxxxxxxx> --- Changes in v4: - Use single macro AM65_CPSW_MAX_QUEUES for both TX and RX queues to simplify code - reuse am65_cpsw_get/set_per_queue_coalesce for am65_cpsw_get/set_coalesce. - return -EINVAL if unsupported tx/rx_coalesce_usecs in am65_cpsw_set_coalesce. - reverse Xmas tree declaration order fixes in cpsw_ale - Link to v3: https://lore.kernel.org/r/20240703-am65-cpsw-multi-rx-v3-0-f11cd860fd72@xxxxxxxxxx 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@xxxxxxxxxx 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@xxxxxxxxxx --- 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 | 75 +++--- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 388 ++++++++++++++++------------ drivers/net/ethernet/ti/am65-cpsw-nuss.h | 39 +-- drivers/net/ethernet/ti/cpsw_ale.c | 287 ++++++++++++++++++-- drivers/net/ethernet/ti/cpsw_ale.h | 62 ++++- 5 files changed, 594 insertions(+), 257 deletions(-) --- base-commit: bfba7bc8b7c2c100b76edb3a646fdce256392129 change-id: 20240606-am65-cpsw-multi-rx-fb6cf8dea5eb Best regards, -- Roger Quadros <rogerq@xxxxxxxxxx>
