netdev - [PATCH net-next 00/10] net: add data-race annotations around dst fields

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Message-ID: <20250627112526.3615031-1-edumazet@google.com>
Date: Fri, 27 Jun 2025 11:25:16 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, Kuniyuki Iwashima <kuniyu@...gle.com>, 
	David Ahern <dsahern@...nel.org>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 00/10] net: add data-race annotations around dst fields

Add annotations around various dst fields, which can change under us.

Add four helpers to prepare better dst->dev protection,
and start using them. More to come later.

Eric Dumazet (10):
  net: dst: annotate data-races around dst->obsolete
  net: dst: annotate data-races around dst->expires
  net: dst: annotate data-races around dst->lastuse
  net: dst: annotate data-races around dst->input
  net: dst: annotate data-races around dst->output
  net: dst: add four helpers to annotate data-races around dst->dev
  ipv4: adopt dst_dev, skb_dst_dev and skb_dst_dev_net[_rcu]
  ipv6: adopt dst_dev() helper
  ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers
  ipv6: ip6_mc_input() and ip6_mr_input() cleanups

 include/net/dst.h                   | 38 +++++++++++++++++-----
 include/net/inet6_hashtables.h      |  2 +-
 include/net/inet_hashtables.h       |  2 +-
 include/net/ip.h                    | 13 ++++----
 include/net/ip6_route.h             |  4 +--
 include/net/ip6_tunnel.h            |  2 +-
 include/net/lwtunnel.h              |  8 ++---
 include/net/route.h                 |  2 +-
 net/core/dst.c                      | 10 +++---
 net/core/dst_cache.c                |  2 +-
 net/core/neighbour.c                |  3 +-
 net/core/rtnetlink.c                |  4 ++-
 net/core/sock.c                     | 12 +++----
 net/ipv4/datagram.c                 |  2 +-
 net/ipv4/icmp.c                     | 24 +++++++-------
 net/ipv4/igmp.c                     |  2 +-
 net/ipv4/ip_fragment.c              |  2 +-
 net/ipv4/ip_output.c                |  6 ++--
 net/ipv4/ip_vti.c                   |  4 +--
 net/ipv4/netfilter.c                |  4 +--
 net/ipv4/route.c                    | 34 ++++++++++----------
 net/ipv4/tcp_fastopen.c             |  4 ++-
 net/ipv4/tcp_ipv4.c                 |  2 +-
 net/ipv4/tcp_metrics.c              |  8 ++---
 net/ipv4/xfrm4_output.c             |  2 +-
 net/ipv6/datagram.c                 |  2 +-
 net/ipv6/exthdrs.c                  | 10 +++---
 net/ipv6/icmp.c                     |  4 ++-
 net/ipv6/ila/ila_lwt.c              |  2 +-
 net/ipv6/ioam6.c                    | 17 +++++-----
 net/ipv6/ioam6_iptunnel.c           |  4 +--
 net/ipv6/ip6_gre.c                  |  8 +++--
 net/ipv6/ip6_input.c                | 33 +++++++++----------
 net/ipv6/ip6_output.c               | 24 +++++++-------
 net/ipv6/ip6_tunnel.c               |  6 ++--
 net/ipv6/ip6_udp_tunnel.c           |  2 +-
 net/ipv6/ip6_vti.c                  |  4 +--
 net/ipv6/ip6mr.c                    |  9 +++---
 net/ipv6/ndisc.c                    |  6 ++--
 net/ipv6/netfilter.c                |  4 +--
 net/ipv6/netfilter/nf_dup_ipv6.c    |  2 +-
 net/ipv6/netfilter/nf_reject_ipv6.c |  2 +-
 net/ipv6/output_core.c              |  4 +--
 net/ipv6/reassembly.c               | 10 +++---
 net/ipv6/route.c                    | 49 +++++++++++++++--------------
 net/ipv6/rpl_iptunnel.c             |  4 +--
 net/ipv6/seg6_iptunnel.c            | 26 ++++++++-------
 net/ipv6/seg6_local.c               |  2 +-
 net/ipv6/tcp_ipv6.c                 |  4 +--
 net/ipv6/xfrm6_output.c             |  2 +-
 net/netfilter/ipvs/ip_vs_xmit.c     |  2 +-
 net/sctp/transport.c                |  2 +-
 net/xfrm/xfrm_policy.c              |  4 +--
 53 files changed, 242 insertions(+), 202 deletions(-)

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2.50.0.727.gbf7dc18ff4-goog