[PATCH net-next 00/14][pull request] igc: Add support for Frame Preemption

[Tony Nguyen]

Faizal Rahim says:

Introduce support for the FPE feature in the IGC driver.

The patches aligns with the upstream FPE API:
https://patchwork.kernel.org/project/netdevbpf/cover/20230220122343.1156614-1-vladimir.oltean@nxp.com/
https://patchwork.kernel.org/project/netdevbpf/cover/20230119122705.73054-1-vladimir.oltean@nxp.com/

It builds upon earlier work:
https://patchwork.kernel.org/project/netdevbpf/cover/20220520011538.1098888-1-vinicius.gomes@intel.com/

The patch series adds the following functionalities to the IGC driver:
a) Configure FPE using `ethtool --set-mm`.
b) Display FPE settings via `ethtool --show-mm`.
c) View FPE statistics using `ethtool --include-statistics --show-mm'.
e) Block setting preemptible tc in taprio since it is not supported yet.
   Existing code already blocks it in mqprio.

Tested:
Enabled CONFIG_PROVE_LOCKING, CONFIG_DEBUG_ATOMIC_SLEEP, CONFIG_DMA_API_DEBUG, and CONFIG_KASAN
1) selftests
2) netdev down/up cycles
3) suspend/resume cycles
4) fpe verification

No bugs or unusual dmesg logs were observed.
Ran 1), 2) and 3) with and without the patch series, compared dmesg and selftest logs - no differences found.
---
IWL: https://lore.kernel.org/intel-wired-lan/20250318030742.2567080-1-faizal.abdul.rahim@linux.intel.com/

The following are changes since commit 8066e388be48f1ad62b0449dc1d31a25489fa12a:
  net: add UAPI to the header guard in various network headers
and are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue 1GbE

Faizal Rahim (13):
  net: stmmac: move frag_size handling out of spin_lock
  net: ethtool: mm: reset verification status when link is down
  igc: rename xdp_get_tx_ring() for non-xdp usage
  igc: rename I225_RXPBSIZE_DEFAULT and I225_TXPBSIZE_DEFAULT
  igc: use FIELD_PREP and GENMASK for existing TX packet buffer size
  igc: optimize TX packet buffer utilization for TSN mode
  igc: use FIELD_PREP and GENMASK for existing RX packet buffer size
  igc: set the RX packet buffer size for TSN mode
  igc: add support for frame preemption verification
  igc: add support to set tx-min-frag-size
  igc: block setting preemptible traffic class in taprio
  igc: add support to get MAC Merge data via ethtool
  igc: add support to get frame preemption statistics via ethtool

Vladimir Oltean (1):
  net: ethtool: mm: extract stmmac verification logic into common
    library

 drivers/net/ethernet/intel/Kconfig            |   1 +
 drivers/net/ethernet/intel/igc/igc.h          |  15 +-
 drivers/net/ethernet/intel/igc/igc_base.h     |   1 +
 drivers/net/ethernet/intel/igc/igc_defines.h  |  55 +++-
 drivers/net/ethernet/intel/igc/igc_ethtool.c  |  81 +++++
 drivers/net/ethernet/intel/igc/igc_main.c     |  69 ++++-
 drivers/net/ethernet/intel/igc/igc_regs.h     |  16 +
 drivers/net/ethernet/intel/igc/igc_tsn.c      | 210 ++++++++++++-
 drivers/net/ethernet/intel/igc/igc_tsn.h      |  52 ++++
 drivers/net/ethernet/stmicro/stmmac/Kconfig   |   1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac.h  |  16 +-
 .../ethernet/stmicro/stmmac/stmmac_ethtool.c  |  41 +--
 .../net/ethernet/stmicro/stmmac/stmmac_fpe.c  | 174 +++--------
 .../net/ethernet/stmicro/stmmac/stmmac_fpe.h  |   5 -
 .../net/ethernet/stmicro/stmmac/stmmac_main.c |   8 +-
 include/linux/ethtool.h                       |  73 +++++
 net/ethtool/mm.c                              | 279 +++++++++++++++++-
 17 files changed, 876 insertions(+), 221 deletions(-)

-- 
2.47.1