netdev - [PATCH RFC ipsec-next 0/3] Add support for per cpu xfrm states.

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Message-ID: <20231214113645.2416005-1-steffen.klassert@secunet.com>
Date: Thu, 14 Dec 2023 12:36:42 +0100
From: Steffen Klassert <steffen.klassert@...unet.com>
To: <netdev@...r.kernel.org>, <devel@...ux-ipsec.org>
CC: Steffen Klassert <steffen.klassert@...unet.com>
Subject: [PATCH RFC ipsec-next 0/3] Add support for per cpu xfrm states.

This patchset implements the xfrm part of per cpu SAs as specified in:

https://datatracker.ietf.org/doc/draft-ietf-ipsecme-multi-sa-performance/

Patch 1 adds the cpu as a lookup key and config option to to generate
acquire messages for each cpu.

Patch 2 caches outbound states at the policy.

Patch 3 caches inbound states on a new percpu state cache.

Please review and test.

Thanks!

----------------------------------------------------------------
Steffen Klassert (3):
      xfrm: Add support for per cpu xfrm state handling.
      xfrm: Cache used outbound xfrm states at the policy.
      xfrm: Add an inbound percpu state cache.

 include/net/netns/xfrm.h  |   1 +
 include/net/xfrm.h        |  13 +++++--
 include/uapi/linux/xfrm.h |   2 ++
 net/ipv4/esp4_offload.c   |   6 ++--
 net/ipv6/esp6_offload.c   |   6 ++--
 net/key/af_key.c          |   6 ++--
 net/xfrm/xfrm_input.c     |   2 +-
 net/xfrm/xfrm_policy.c    |  12 +++++++
 net/xfrm/xfrm_state.c     | 159 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------
 net/xfrm/xfrm_user.c      |  43 ++++++++++++++++++++--
 10 files changed, 225 insertions(+), 25 deletions(-)