[PATCH] crypto/cnxk: predecrement esn value to be used in session

[Anoob Joseph]

ESN provided in the session would be the next sequence number to be
used. Hence predecrement the value, so that in datapath, incremented
value will be as expected.

Signed-off-by: Anoob Joseph <ano...@marvell.com>
---
 drivers/crypto/cnxk/cn9k_ipsec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/cnxk/cn9k_ipsec.c b/drivers/crypto/cnxk/cn9k_ipsec.c
index cb9cf174a4..6d26b0cc01 100644
--- a/drivers/crypto/cnxk/cn9k_ipsec.c
+++ b/drivers/crypto/cnxk/cn9k_ipsec.c
@@ -41,7 +41,8 @@ cn9k_ipsec_outb_sa_create(struct cnxk_cpt_qp *qp,
        /* Initialize lookaside IPsec private data */
        sa->dir = RTE_SECURITY_IPSEC_SA_DIR_EGRESS;
 
-       sa->esn = ipsec->esn.value;
+       if (ipsec->esn.value)
+               sa->esn = ipsec->esn.value - 1;
 
        ret = cnxk_ipsec_outb_rlens_get(&sa->rlens, ipsec, crypto_xform);
        if (ret)
-- 
2.25.1