Steffen Klassert 2a64cff2aa xfrm: Add support for per cpu xfrm state handling. ...

[ Upstream commit 1ddf9916ac ]

Currently all flows for a certain SA must be processed by the same
cpu to avoid packet reordering and lock contention of the xfrm
state lock.

To get rid of this limitation, the IETF standardized per cpu SAs
in RFC 9611. This patch implements the xfrm part of it.

We add the cpu as a lookup key for xfrm states and a config option
to generate acquire messages for each cpu.

With that, we can have on each cpu a SA with identical traffic selector
so that flows can be processed in parallel on all cpus.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Tested-by: Antony Antony <antony.antony@secunet.com>
Tested-by: Tobias Brunner <tobias@strongswan.org>
Stable-dep-of: e952837f3d ("xfrm: state: fix out-of-bounds read during lookup")
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-02-08 09:58:00 +01:00

..

af_key.c

xfrm: Add support for per cpu xfrm state handling.

2025-02-08 09:58:00 +01:00

Makefile

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00