netdev - [PATCH net-next v2 0/7] u64_stats: Introduce u64_stats

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Message-ID: <20260123162159.2877941-1-mmyangfl@gmail.com>
Date: Sat, 24 Jan 2026 00:21:32 +0800
From: David Yang <mmyangfl@...il.com>
To: netdev@...r.kernel.org
Cc: David Yang <mmyangfl@...il.com>,
	Sabrina Dubroca <sd@...asysnail.net>,
	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>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Ido Schimmel <idosch@...dia.com>,
	Simon Horman <horms@...nel.org>,
	Aaron Conole <aconole@...hat.com>,
	Eelco Chaudron <echaudro@...hat.com>,
	Ilya Maximets <i.maximets@....org>,
	Shigeru Yoshida <syoshida@...hat.com>,
	Stanislav Fomichev <sdf@...ichev.me>,
	Breno Leitao <leitao@...ian.org>,
	Carolina Jubran <cjubran@...dia.com>,
	Kuniyuki Iwashima <kuniyu@...gle.com>,
	Guillaume Nault <gnault@...hat.com>,
	linux-kernel@...r.kernel.org,
	bridge@...ts.linux.dev,
	dev@...nvswitch.org
Subject: [PATCH net-next v2 0/7] u64_stats: Introduce u64_stats_reads()

On 64bit arches, struct u64_stats_sync is empty and provides no help
against load/store tearing. memcpy() and struct copying should not be
considered tear-free. Use u64_stats_reads() instead.

v1: https://lore.kernel.org/r/20260120092137.2161162-1-mmyangfl@gmail.com
  - rename to u64_stats_reads() to clarify data flow direction
  - refine the implementation
  - add docs
  - fix struct copying too

David Yang (7):
  u64_stats: Introduce u64_stats_reads()
  u64_stats: Doc incorrect usage with plain variables
  net: bridge: mcast: fix memcpy with u64_stats
  net: openvswitch: fix load tearing with u64_stats
  macsec: fix memcpy with u64_stats
  mpls: Fix load tearing with u64_stats
  vxlan: vnifilter: fix memcpy with u64_stats

 drivers/net/macsec.c                |  6 ++--
 drivers/net/vxlan/vxlan_vnifilter.c |  2 +-
 include/linux/u64_stats_sync.h      | 56 ++++++++++++++++++++++++-----
 net/bridge/br_multicast.c           |  2 +-
 net/mpls/af_mpls.c                  |  2 +-
 net/openvswitch/datapath.c          |  3 +-
 6 files changed, 55 insertions(+), 16 deletions(-)

-- 
2.51.0