netdev - [PATCH net 00/16] net: first round to use dev_net

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Message-ID: <20250131171334.1172661-1-edumazet@google.com>
Date: Fri, 31 Jan 2025 17:13:18 +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: netdev@...r.kernel.org, Kuniyuki Iwashima <kuniyu@...zon.com>, 
	Simon Horman <horms@...nel.org>, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net 00/16] net: first round to use dev_net_rcu()

dev_net(dev) should either be protected by RTNL or RCU.

There is no LOCKDEP support yet for this helper.

Adding it would trigger too many splats.

Instead, add dev_net_rcu() and start to use it
to either fix bugs or document points that were safely
using dev_net().

Eric Dumazet (16):
  net: add dev_net_rcu() helper
  ipv4: add RCU protection to ip4_dst_hoplimit()
  ipv4: use RCU protection in ip_dst_mtu_maybe_forward()
  ipv4: use RCU protection in ipv4_default_advmss()
  ipv4: use RCU protection in rt_is_expired()
  tcp: convert to dev_net_rcu()
  net: gro: convert four dev_net() calls
  udp: convert to dev_net_rcu()
  ipv4: icmp: convert to dev_net_rcu()
  ipv6: icmp: convert to dev_net_rcu()
  ipv6: input: convert to dev_net_rcu()
  ipv6: output: convert to dev_net_rcu()
  ipv6: use RCU protection in ip6_default_advmss()
  net: filter: convert to dev_net_rcu()
  flow_dissector: use rcu protection to fetch dev_net()
  ipv4: use RCU protection in inet_select_addr()

 include/linux/netdevice.h      |  6 +++++
 include/net/inet6_hashtables.h |  2 +-
 include/net/inet_hashtables.h  |  2 +-
 include/net/ip.h               | 13 ++++++++---
 include/net/net_namespace.h    |  2 +-
 include/net/route.h            |  9 ++++++--
 net/core/filter.c              | 40 +++++++++++++++++-----------------
 net/core/flow_dissector.c      | 21 +++++++++---------
 net/ipv4/devinet.c             |  3 ++-
 net/ipv4/icmp.c                | 22 +++++++++----------
 net/ipv4/route.c               | 19 ++++++++++++----
 net/ipv4/tcp_ipv4.c            |  8 +++----
 net/ipv4/tcp_metrics.c         |  6 ++---
 net/ipv4/tcp_offload.c         |  2 +-
 net/ipv4/udp.c                 | 19 ++++++++--------
 net/ipv4/udp_offload.c         |  2 +-
 net/ipv6/icmp.c                | 22 +++++++++----------
 net/ipv6/ip6_input.c           | 12 +++++-----
 net/ipv6/ip6_output.c          |  4 ++--
 net/ipv6/output_core.c         |  2 +-
 net/ipv6/route.c               |  7 +++++-
 net/ipv6/tcp_ipv6.c            | 10 ++++-----
 net/ipv6/tcpv6_offload.c       |  2 +-
 net/ipv6/udp.c                 | 18 +++++++--------
 net/ipv6/udp_offload.c         |  2 +-
 25 files changed, 146 insertions(+), 109 deletions(-)

-- 
2.48.1.362.g079036d154-goog