[PATCH net-next v3 0/8] bng_en: add link management and statistics support

[Bhargava Marreddy <bhargava.marreddy@broadcom.com>]

Hi,

This series enhances the bng_en driver by adding:
1. Link/PHY support
   a. Link query
   b. Async Link events
   c. Ethtool link set/get functionality
2. Hardware statistics reporting via ethtool -S

This version incorporates feedback received prior to splitting the
original series into two parts. 

 Addressed following comments from Andrew Lunn
   - Apply Rev-xmas fix in several places.
   - Correct ethtool-speed comment to reflect accurate behavior.
   https://lore.kernel.org/netdev/49930724-74b8-41fe-8f5c-482afc976b82@lunn.ch/
   https://lore.kernel.org/netdev/CANXQDtb5XuLKOOorCMYDUpVz6aFuQgvmQZ4pS6RJGkAgeM8n1A@mail.gmail.com/

 Addressed following comments from Jakub Kicinski
   - Took care of missing mutex_init()
   https://lore.kernel.org/netdev/20251127190855.69779791@kernel.org/#t
   https://lore.kernel.org/netdev/CANXQDtYy2JziaaVi=Cqt+gAJNt4NjFFs8NbhrS=RBV61ORwinA@mail.gmail.com/

 Addressed following comments from ALOK TIWARI
   - Add newline for clarity/formatting.
   https://lore.kernel.org/netdev/CANXQDtZbLhdwEtN+kKg1OVLV+uy-gsNfX+rU4MR77QPuO6_y9A@mail.gmail.com/

v3:
 Addressed comments from Andrew Lunn:
  - Fix a comment and refactor bnge_hwrm_set_pause() 
    to improve code readability.

 Addressed comments from Jakub Kicinski:
  - Switch to RCU for stats synchronization and drop the 
    BNGE_STATE_READ_STATS state bit.

 Fix checkpatch warning by switching to kzalloc_node(). 

v2:
 Addressed comments from Andrew Lunn:
  - Add implementation for .get_pauseparam and .set_pauseparam to support
    a full flow control configuration, covering global autoneg, independent
    pause autoneg, and forced RX/TX pause functionality.
  - Move MAC, PHY, Control, Pause, and RMON statistics from
    .get_ethtool_stats to their respective structured ethtool
    callbacks (e.g., .get_eth_mac_stats, .get_rmon_stats).
 
 Addressed comments from Jakub Kicinski:
  - Fix potential out-of-bounds read in speed mask array by adding 
    the missing sentinel.
  - Simplify timer synchronization by removing the redundant intr_sem.
  - Replace link_lock with the netdev instance lock, as it is sufficient
    to handle the required synchronization.

v1: https://lore.kernel.org/all/20260223163641.755200-1-bhargava.marreddy@broadcom.com/

Bhargava Marreddy (8):
  bng_en: add per-PF workqueue, timer, and slow-path task
  bng_en: query PHY capabilities and report link status
  bng_en: add ethtool link settings, get_link, and nway_reset
  bng_en: implement ethtool pauseparam operations
  bng_en: add support for link async events
  bng_en: add initial support for ethtool stats display
  bng_en: periodically fetch and accumulate hardware statistics
  bng_en: implement ndo_get_stats64

 drivers/net/ethernet/broadcom/bnge/Makefile   |    3 +-
 drivers/net/ethernet/broadcom/bnge/bnge.h     |   12 +
 .../net/ethernet/broadcom/bnge/bnge_core.c    |    1 +
 .../net/ethernet/broadcom/bnge/bnge_ethtool.c |  811 ++++++++++
 .../ethernet/broadcom/bnge/bnge_hwrm_lib.c    |  388 ++++-
 .../ethernet/broadcom/bnge/bnge_hwrm_lib.h    |    8 +
 .../net/ethernet/broadcom/bnge/bnge_link.c    | 1304 +++++++++++++++++
 .../net/ethernet/broadcom/bnge/bnge_link.h    |  204 +++
 .../net/ethernet/broadcom/bnge/bnge_netdev.c  |  579 +++++++-
 .../net/ethernet/broadcom/bnge/bnge_netdev.h  |  120 +-
 .../net/ethernet/broadcom/bnge/bnge_txrx.c    |   35 +-
 11 files changed, 3446 insertions(+), 19 deletions(-)
 create mode 100644 drivers/net/ethernet/broadcom/bnge/bnge_link.c
 create mode 100644 drivers/net/ethernet/broadcom/bnge/bnge_link.h

-- 
2.47.3