netdev - [PATCH v2 net-next 00/11] net_sched: act: extend RCU use in dump() methods

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Message-ID: <20250709090204.797558-1-edumazet@google.com>
Date: Wed,  9 Jul 2025 09:01:52 +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>, Jamal Hadi Salim <jhs@...atatu.com>, 
	Cong Wang <xiyou.wangcong@...il.com>, Jiri Pirko <jiri@...nulli.us>, 
	Kuniyuki Iwashima <kuniyu@...gle.com>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH v2 net-next 00/11] net_sched: act: extend RCU use in dump() methods

We are trying to get away from central RTNL in favor of fine-grained
mutexes. While looking at net/sched, I found that act already uses
RCU in the fast path for the most cases, and could also be used
in dump() methods.

This series is not complete and will be followed by a second one.

v2: fix act_nat patch (Simon)
v1: https://lore.kernel.org/netdev/20250707130110.619822-1-edumazet@google.com/

Eric Dumazet (11):
  net_sched: act: annotate data-races in tcf_lastuse_update() and
	tcf_tm_dump()
  net_sched: act_connmark: use RCU in tcf_connmark_dump()
  net_sched: act_csum: use RCU in tcf_csum_dump()
  net_sched: act_ct: use RCU in tcf_ct_dump()
  net_sched: act_ctinfo: use atomic64_t for three counters
  net_sched: act_ctinfo: use RCU in tcf_ctinfo_dump()
  net_sched: act_mpls: use RCU in tcf_mpls_dump()
  net_sched: act_nat: use RCU in tcf_nat_dump()
  net_sched: act_pedit: use RCU in tcf_pedit_dump()
  net_sched: act_police: use RCU in tcf_police_dump()
  net_sched: act_skbedit: use RCU in tcf_skbedit_dump()

 include/net/act_api.h			  | 23 ++++++++++-------
 include/net/tc_act/tc_connmark.h |  1 +
 include/net/tc_act/tc_csum.h	  |  1 +
 include/net/tc_act/tc_ct.h 	  |  2 +-
 include/net/tc_act/tc_ctinfo.h   |  7 +++---
 include/net/tc_act/tc_mpls.h	  |  1 +
 include/net/tc_act/tc_nat.h	  |  1 +
 include/net/tc_act/tc_pedit.h	  |  1 +
 include/net/tc_act/tc_police.h   |  3 ++-
 include/net/tc_act/tc_skbedit.h  |  1 +
 net/sched/act_connmark.c		  | 18 ++++++++------
 net/sched/act_csum.c			  | 18 +++++++-------
 net/sched/act_ct.c 			  | 30 +++++++++++------------
 net/sched/act_ctinfo.c 		  | 42 +++++++++++++++++---------------
 net/sched/act_mpls.c			  | 21 ++++++++--------
 net/sched/act_nat.c			  | 25 +++++++++----------
 net/sched/act_pedit.c			  | 20 +++++++--------
 net/sched/act_police.c 		  | 18 +++++++-------
 net/sched/act_skbedit.c		  | 20 +++++++--------
 19 files changed, 133 insertions(+), 120 deletions(-)

--
2.50.0.727.gbf7dc18ff4-goog