netdev - [PATCH net v2 0/2] net: make memory provider install / close paths more common

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Message-ID: <20250403013405.2827250-1-kuba@kernel.org>
Date: Wed,  2 Apr 2025 18:34:03 -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,
	ap420073@...il.com,
	almasrymina@...gle.com,
	asml.silence@...il.com,
	dw@...idwei.uk,
	sdf@...ichev.me,
	Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net v2 0/2] net: make memory provider install / close paths more common

We seem to be fixing bugs in config path for devmem which also exist
in the io_uring ZC path. Let's try to make the two paths more common,
otherwise this is bound to keep happening.

Found by code inspection and compile tested only.

v2:
 - [patch 1] add to commit msg
 - [patch 1] fix arg naming in the header
 - [patch 2] don't split the registration check, it may cause a race
   if we just bail on the registration state and not on the MP being
   present, as we drop and re-take the instance lock after setting
   reg_state
v1: https://lore.kernel.org/20250331194201.2026422-1-kuba@kernel.org

Jakub Kicinski (2):
  net: move mp dev config validation to __net_mp_open_rxq()
  net: avoid false positive warnings in __net_mp_close_rxq()

 include/net/page_pool/memory_provider.h |  6 +++
 net/core/devmem.c                       | 64 +++++++------------------
 net/core/netdev-genl.c                  |  6 ---
 net/core/netdev_rx_queue.c              | 53 +++++++++++++++-----
 4 files changed, 63 insertions(+), 66 deletions(-)

-- 
2.49.0