Files
linux/include/net
Antony Antony bac7a60e26 xfrm: add state synchronization after migration
Add xfrm_migrate_sync() to copy curlft and replay state from the old SA
to the new one before installation. The function allocates no memory, so
it can be called under a spinlock. In preparation for a subsequent patch
in this series.

A subsequent patch calls this under x->lock, atomically capturing the
latest lifetime counters and replay state from the original SA and
deleting it in the same critical section to prevent SN/IV reuse
for XFRM_MSG_MIGRATE_STATE method.

No functional change.

Signed-off-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2026-06-04 12:22:40 +02:00
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