netdev - [PATCH iwl-next v3 0/4] igb: XDP/ZC follow up

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Message-Id: <20250319-igb_irq-v3-0-b9ee902143dd@linutronix.de>
Date: Wed, 19 Mar 2025 11:26:38 +0100
From: Kurt Kanzenbach <kurt@...utronix.de>
To: Tony Nguyen <anthony.l.nguyen@...el.com>, 
 Przemek Kitszel <przemyslaw.kitszel@...el.com>
Cc: Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Sebastian Andrzej Siewior <bigeasy@...utronix.de>, 
 Joe Damato <jdamato@...tly.com>, 
 Gerhard Engleder <gerhard@...leder-embedded.com>, 
 intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org, 
 Kurt Kanzenbach <kurt@...utronix.de>, Rinitha S <sx.rinitha@...el.com>, 
 Aleksandr Loktionov <aleksandr.loktionov@...el.com>, 
 Sweta Kumari <sweta.kumari@...el.com>
Subject: [PATCH iwl-next v3 0/4] igb: XDP/ZC follow up

This is a follow up for the igb XDP/ZC implementation. The first three 
patches link the IRQs and queues to NAPI instances. This is required to 
bring back the XDP/ZC busy polling support. The last patch removes 
undesired IRQs (injected via igb watchdog) while busy polling with 
napi_defer_hard_irqs and gro_flush_timeout set.

I've dropped the tags for patch #2. Please, review and test again.

Test output:
|apl1:~/linux# uname -a
|Linux apl1 6.14.0-rc6+ #1 SMP PREEMPT_RT Wed Mar 19 08:31:00 CET 2025 x86_64 GNU/Linux
|apl1:~/linux# NETIF=enp2s0 ./tools/testing/selftests/drivers/net/queues.py
|TAP version 13
|1..4
|ok 1 queues.get_queues
|ok 2 queues.addremove_queues
|ok 3 queues.check_down
|ok 4 queues.check_xsk
|# Totals: pass:4 fail:0 xfail:0 xpass:0 skip:0 error:0

Signed-off-by: Kurt Kanzenbach <kurt@...utronix.de>
---
Changes in v3:
- Drop igb_set_queue_napi() in xsk code (Joe & Tony)
- Add tags
- Rebase to net-next
- Link to v2: https://lore.kernel.org/r/20250217-igb_irq-v2-0-4cb502049ac2@linutronix.de

Changes in v2:
- Take RTNL lock in PCI error handlers (Joe)
- Fix typo in commit message (Gerhard)
- Use netif_napi_add_config() (Joe)
- Link to v1: https://lore.kernel.org/r/20250210-igb_irq-v1-0-bde078cdb9df@linutronix.de

---
Kurt Kanzenbach (4):
      igb: Link IRQs to NAPI instances
      igb: Link queues to NAPI instances
      igb: Add support for persistent NAPI config
      igb: Get rid of spurious interrupts

 drivers/net/ethernet/intel/igb/igb.h      |  5 +-
 drivers/net/ethernet/intel/igb/igb_main.c | 78 +++++++++++++++++++++++++++----
 drivers/net/ethernet/intel/igb/igb_xsk.c  |  1 +
 3 files changed, 73 insertions(+), 11 deletions(-)
---
base-commit: 23c9ff659140f97d44bf6fb59f89526a168f2b86
change-id: 20250206-igb_irq-f5a4d4deb207

Best regards,
-- 
Kurt Kanzenbach <kurt@...utronix.de>