[dpdk-dev] [PATCH 03/20] security: add hfn override option in PDCP

[Akhil Goyal]

HFN can be given as a per packet value also.
As we do not have IV in case of PDCP, and HFN is
used to generate IV. IV field can be used to get the
per packet HFN while enq/deq
If hfn_ovrd field in pdcp_xform is set,
application is expected to set the per packet HFN
in place of IV. Driver will extract the HFN and perform
operations accordingly.

Signed-off-by: Akhil Goyal <akhil.goyal at nxp.com>
---
 lib/librte_security/rte_security.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/librte_security/rte_security.h b/lib/librte_security/rte_security.h
index 96806e3a2..4452545fe 100644
--- a/lib/librte_security/rte_security.h
+++ b/lib/librte_security/rte_security.h
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2017 NXP.
+ * Copyright 2017,2019 NXP
  * Copyright(c) 2017 Intel Corporation.
  */
 
@@ -270,6 +270,8 @@ struct rte_security_pdcp_xform {
 	uint32_t hfn;
 	/** HFN Threshold for key renegotiation */
 	uint32_t hfn_threshold;
+	/** Enable per packet HFN override */
+	uint32_t hfn_ovrd;
 };
 
 /**
-- 
2.17.1