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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2024-10-23 12:53:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-08 09:58:00 +0100 |
| commit | 2a64cff2aabe8b3a1bff9374a3e953323d08ee0e (patch) | |
| tree | 54ad6f6061857769b5e5d3c0e915cf29c56e8f11 /include/uapi | |
| parent | 87fdd4c4478f1741d69c6f7cb0bf2eeb1e3588c7 (diff) | |
| download | linux-2a64cff2aabe8b3a1bff9374a3e953323d08ee0e.tar.gz linux-2a64cff2aabe8b3a1bff9374a3e953323d08ee0e.tar.bz2 linux-2a64cff2aabe8b3a1bff9374a3e953323d08ee0e.zip | |
xfrm: Add support for per cpu xfrm state handling.
[ Upstream commit 1ddf9916ac09313128e40d6581cef889c0b4ce84 ]
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: e952837f3ddb ("xfrm: state: fix out-of-bounds read during lookup")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/xfrm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/xfrm.h b/include/uapi/linux/xfrm.h index f28701500714..d73a97e3030a 100644 --- a/include/uapi/linux/xfrm.h +++ b/include/uapi/linux/xfrm.h @@ -322,6 +322,7 @@ enum xfrm_attr_type_t { XFRMA_MTIMER_THRESH, /* __u32 in seconds for input SA */ XFRMA_SA_DIR, /* __u8 */ XFRMA_NAT_KEEPALIVE_INTERVAL, /* __u32 in seconds for NAT keepalive */ + XFRMA_SA_PCPU, /* __u32 */ __XFRMA_MAX #define XFRMA_OUTPUT_MARK XFRMA_SET_MARK /* Compatibility */ @@ -437,6 +438,7 @@ struct xfrm_userpolicy_info { #define XFRM_POLICY_LOCALOK 1 /* Allow user to override global policy */ /* Automatically expand selector to include matching ICMP payloads. */ #define XFRM_POLICY_ICMP 2 +#define XFRM_POLICY_CPU_ACQUIRE 4 __u8 share; }; |