netdev - [PATCH net-next v3 00/14] eth: fbnic: support queue API and zero-copy Rx

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Message-ID: <20250901211214.1027927-1-kuba@kernel.org>
Date: Mon,  1 Sep 2025 14:12:00 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	andrew+netdev@...n.ch,
	horms@...nel.org,
	almasrymina@...gle.com,
	tariqt@...dia.com,
	dtatulea@...dia.com,
	hawk@...nel.org,
	ilias.apalodimas@...aro.org,
	alexanderduyck@...com,
	sdf@...ichev.me,
	Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next v3 00/14] eth: fbnic: support queue API and zero-copy Rx

Add support for queue API to fbnic, enable zero-copy Rx.

Patch 10 is likely of most interest as it adds a new core helper
(and touches mlx5). The rest of the patches are fbnic-specific
(and relatively boring).

Patches 1-3 reshuffle the Rx init/allocation path to better
align structures and functions which operate on them. Notably
patch 1 moves the page pool pointer to the queue struct (from NAPI).

Patch 4 converts the driver to use netmem_ref. The driver has
separate and explicit buffer queue for scatter / payloads, so only
references to those are converted.

Next 5 patches are more boring code shifts.

Patch 11 adds unreadable memory support to page pool allocation.

Patch 14 finally adds the support for queue API.

v3:
 - rebase (fix from net added something to the context)
v2: https://lore.kernel.org/20250829012304.4146195-1-kuba@kernel.org
 - rework patch 10
 - update commit message in patch 11
v1: https://lore.kernel.org/20250820025704.166248-1-kuba@kernel.org

Jakub Kicinski (14):
  eth: fbnic: move page pool pointer from NAPI to the ring struct
  eth: fbnic: move xdp_rxq_info_reg() to resource alloc
  eth: fbnic: move page pool alloc to fbnic_alloc_rx_qt_resources()
  eth: fbnic: use netmem_ref where applicable
  eth: fbnic: request ops lock
  eth: fbnic: split fbnic_disable()
  eth: fbnic: split fbnic_flush()
  eth: fbnic: split fbnic_enable()
  eth: fbnic: split fbnic_fill()
  net: add helper to pre-check if PP for an Rx queue will be unreadable
  eth: fbnic: allocate unreadable page pool for the payloads
  eth: fbnic: defer page pool recycling activation to queue start
  eth: fbnic: don't pass NAPI into pp alloc
  eth: fbnic: support queue ops / zero-copy Rx

 drivers/net/ethernet/meta/fbnic/fbnic_txrx.h  |  20 +-
 include/net/netdev_queues.h                   |   2 +
 include/net/page_pool/helpers.h               |  12 +
 .../net/ethernet/mellanox/mlx5/core/en_main.c |   9 +-
 .../net/ethernet/meta/fbnic/fbnic_netdev.c    |   1 +
 drivers/net/ethernet/meta/fbnic/fbnic_pci.c   |   9 +-
 drivers/net/ethernet/meta/fbnic/fbnic_txrx.c  | 621 ++++++++++++------
 net/core/netdev_rx_queue.c                    |   9 +
 8 files changed, 454 insertions(+), 229 deletions(-)

-- 
2.51.0