crypto/cnxk: decrement ESN to be used in session

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 <anoobj@marvell.com>

diff --git a/drivers/crypto/cnxk/cn9k_ipsec.c b/drivers/crypto/cnxk/cn9k_ipsec.c
index cb9cf174a46c3e5c9debee6dee394905df388a85..6d26b0cc01f147372e11f78e7e3eb444040c0dcd 100644 (file)
--- 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)