xfrm: state: add sequence count to detect hash resizes

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Once xfrm_state_find is lockless we have to cope with a concurrent
resize opertion.

We use a sequence counter to block in case a resize is in progress
and to detect if we might have missed a state that got moved to
a new hash table.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

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Florian Westphal 2016-08-09 12:16:07 +02:00 • committed by Steffen Klassert

parent df7274eb70

commit b65e3d7be0

1 changed files with 15 additions and 0 deletions

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net/xfrm/xfrm_state.c

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