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* [PATCH net-next v3 0/4] net/sched: let actions drop their per CPU memory
@ 2026-11-09 12:46 Alexandre Cassen
  2026-11-09 12:46 ` [PATCH net-next v3 2/4] net/sched: honor TCA_ACT_FLAGS_NO_PERCPU_STATS in bpf, ife and skbmod Alexandre Cassen
  2026-11-12  1:30 ` [PATCH net-next v3 0/4] net/sched: let actions drop their per CPU memory patchwork-bot+netdevbpf
  0 siblings, 2 replies; 5+ messages in thread
From: Alexandre Cassen @ 2026-11-09 12:46 UTC (permalink / raw)
  To: Jamal Hadi Salim, Jiri Pirko
  Cc: David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
	Simon Horman, Vladimir Oltean, Ido Schimmel, Daniel Borkmann,
	Martin KaFai Lau, John Fastabend, Stanislav Fomichev,
	Alexei Starovoitov, Andrii Nakryiko, Eduard Zingerman,
	Kumar Kartikeya Dwivedi, Song Liu, Yonghong Song, Jiri Olsa,
	Emil Tsalapatis, Ihor Solodrai, netdev, bpf

This series lets actions drop their per CPU stats and lets skip_sw
tunnel_key actions drop their dst cache:

- skbedit, police, mpls and sample honor TCA_ACT_FLAGS_NO_PERCPU_STATS.
- bpf, ife and skbmod honor it too. All actions now do.
- Action init sees the offload flags of the filter. A skip_sw filter
  alone now satisfies the skbedit queue_mapping check.
- tunnel_key skips the dst cache for skip_sw actions.

v3:
- Add patch 2 for bpf, ife and skbmod (Jamal).
- Add Jamal's Reviewed-by to patch 3.
- Correct the memory saving in patch 1 to 8 KB. The 6.5 KB in v2 ignored
  the padding that the alignment of the stats adds.
- Reword the title. Patch 2 does not concern hardware only actions.

v2: https://lore.kernel.org/netdev/20261104214607.556269-1-acassen@corp.free.fr/
- Add the act_api patch so that a skip_sw filter is enough for the
  tunnel_key patch (Sashiko [1], Jakub).
- Give the memory saving in the tunnel_key patch (Sashiko [1], Jakub)
  and in patch 1.
- Drop the race note from patch 1. Commit 1800f27a5ef8 ("net/sched:
  act_api: take tcfa_lock for hardware stats updates") fixes this race,
  which Sashiko [1] also flags.
- Add Jamal's Reviewed-by to patch 1 and the tunnel_key patch.

v1: https://lore.kernel.org/netdev/20261009051930.3619697-1-acassen@corp.free.fr/
[1] https://netdev-ai.bots.linux.dev/sashiko/#/patchset/20261009051930.3619697-1-acassen%40corp.free.fr

Alexandre Cassen (4):
  net/sched: honor TCA_ACT_FLAGS_NO_PERCPU_STATS in more actions
  net/sched: honor TCA_ACT_FLAGS_NO_PERCPU_STATS in bpf, ife and skbmod
  net/sched: act_api: pass the filter offload flags to action init
  net/sched: act_tunnel_key: skip dst cache for skip_sw actions

 net/sched/act_api.c        | 17 +++++++----------
 net/sched/act_bpf.c        |  8 ++++----
 net/sched/act_ife.c        | 24 ++++++++++++------------
 net/sched/act_mpls.c       |  8 ++++----
 net/sched/act_police.c     | 10 +++++-----
 net/sched/act_sample.c     |  6 +++---
 net/sched/act_skbedit.c    |  9 +++++----
 net/sched/act_skbmod.c     |  8 ++++----
 net/sched/act_tunnel_key.c | 10 +++++++---
 9 files changed, 51 insertions(+), 49 deletions(-)

-- 
2.43.0


^ permalink raw reply	[flat|nested] 5+ messages in thread
end of thread, other threads:[~2026-11-12  9:06 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-11-09 12:46 [PATCH net-next v3 0/4] net/sched: let actions drop their per CPU memory Alexandre Cassen
2026-11-09 12:46 ` [PATCH net-next v3 2/4] net/sched: honor TCA_ACT_FLAGS_NO_PERCPU_STATS in bpf, ife and skbmod Alexandre Cassen
2026-11-12  1:22   ` Jakub Kicinski
2026-11-12  9:06     ` Alexandre Cassen
2026-11-12  1:30 ` [PATCH net-next v3 0/4] net/sched: let actions drop their per CPU memory patchwork-bot+netdevbpf

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