Update ipsec_xform definition to include ESN field.
This allows the application to control the ESN starting value.

Signed-off-by: Declan Doherty <redacted>
Signed-off-by: Radu Nicolau <redacted>
Signed-off-by: Abhijit Sinha <redacted>
Signed-off-by: Daniel Martin Buckley <redacted>
Acked-by: Fan Zhang <redacted>
Acked-by: Anoob Joseph <redacted>
---
 lib/security/rte_security.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/security/rte_security.h b/lib/security/rte_security.h
index 84ba1b08f8..1bd09e3cc2 100644
--- a/lib/security/rte_security.h
+++ b/lib/security/rte_security.h

@@ -240,6 +240,14 @@ struct rte_security_ipsec_xform {
 	 */
 	uint32_t mss;
 	/**< IPsec payload Maximum Segment Size */
+	union {
+		uint64_t value;
+		struct {
+			uint32_t low;
+			uint32_t hi;