netdev - [PATCH net-next 0/7][pull request] igc: harmonize queue priority and add preemptible queue support

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Message-ID: <20250611180314.2059166-1-anthony.l.nguyen@intel.com>
Date: Wed, 11 Jun 2025 11:03:02 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	andrew+netdev@...n.ch,
	netdev@...r.kernel.org
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>,
	faizal.abdul.rahim@...ux.intel.com,
	faizal.abdul.rahim@...el.com,
	chwee.lin.choong@...el.com,
	vladimir.oltean@....com,
	horms@...nel.org,
	vitaly.lifshits@...el.com,
	dima.ruinskiy@...el.com
Subject: [PATCH net-next 0/7][pull request] igc: harmonize queue priority and add preemptible queue support

Faizal Rahim says:

MAC Merge support for frame preemption was previously added for igc:
https://lore.kernel.org/netdev/20250418163822.3519810-1-anthony.l.nguyen@intel.com/

This series builds on that work and adds support for:
- Harmonizing taprio and mqprio queue priority behavior, based on past
  discussions and suggestions:
  https://lore.kernel.org/all/20250214102206.25dqgut5tbak2rkz@skbuf/
- Enabling preemptible queue support for both taprio and mqprio, with
  priority harmonization as a prerequisite.

Patch organization:
- Patches 1-3: Preparation work for patches 6 and 7
- Patches 4-5: Queue priority harmonization
- Patches 6-7: Add preemptible queue support
---
IWL: https://lore.kernel.org/intel-wired-lan/20250519071911.2748406-1-faizal.abdul.rahim@intel.com/

The following are changes since commit 0097c4195b1d0ca57d15979626c769c74747b5a0:
  net: airoha: Add PPPoE offload support
and are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue 1GbE

Faizal Rahim (7):
  igc: move TXDCTL and RXDCTL related macros
  igc: add DCTL prefix to related macros
  igc: refactor TXDCTL macros to use FIELD_PREP and GEN_MASK
  igc: assign highest TX queue number as highest priority in mqprio
  igc: add private flag to reverse TX queue priority in TSN mode
  igc: add preemptible queue support in taprio
  igc: add preemptible queue support in mqprio

 drivers/net/ethernet/intel/igc/igc.h         |  33 +++++-
 drivers/net/ethernet/intel/igc/igc_base.h    |   8 --
 drivers/net/ethernet/intel/igc/igc_defines.h |   1 +
 drivers/net/ethernet/intel/igc/igc_ethtool.c |  12 +-
 drivers/net/ethernet/intel/igc/igc_main.c    |  57 ++++++---
 drivers/net/ethernet/intel/igc/igc_tsn.c     | 116 ++++++++++++++++---
 drivers/net/ethernet/intel/igc/igc_tsn.h     |   5 +
 7 files changed, 189 insertions(+), 43 deletions(-)

-- 
2.47.1