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xfrm: Add ESN support for IPSec HW offload

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This patch adds ESN support to IPsec device offload.
Adding new xfrm device operation to synchronize device ESN.

Signed-off-by: Yossef Efraim <yossefe@mellanox.com>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Yossef Efraim
2018-01-14 11:39:10 +02:00
committed by Steffen Klassert
parent 4f7d58517f
commit 50bd870a9e
5 changed files with 27 additions and 2 deletions
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net/xfrm/xfrm_replay.c
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@@ -551,6 +551,8 @@ static void xfrm_replay_advance_esn(struct xfrm_state *x, __be32 net_seq)
bitnr = replay_esn->replay_window - (diff - pos);
}
xfrm_dev_state_advance_esn(x);
nr = bitnr >> 5;
bitnr = bitnr & 0x1F;
replay_esn->bmp[nr] |= (1U << bitnr);