[dpdk-dev] [PATCH 6/7] examples/ipsec-secgw: add support for defining initial sequence number value

[Radu Nicolau]

Add esn field to SA definition block to allow initial ESN value

Signed-off-by: Declan Doherty <declan.doherty at intel.com>
Signed-off-by: Radu Nicolau <radu.nicolau at intel.com>
---
 examples/ipsec-secgw/ipsec.c |  5 +++++
 examples/ipsec-secgw/ipsec.h |  2 ++
 examples/ipsec-secgw/sa.c    | 15 +++++++++++++++
 3 files changed, 22 insertions(+)

diff --git a/examples/ipsec-secgw/ipsec.c b/examples/ipsec-secgw/ipsec.c
index aa68e4f827..28772da345 100644
--- a/examples/ipsec-secgw/ipsec.c
+++ b/examples/ipsec-secgw/ipsec.c
@@ -234,6 +234,11 @@ create_inline_session(struct socket_ctx *skt_ctx, struct ipsec_sa *sa,
 		sess_conf.ipsec.udp.dport = htons(sa->udp.dport);
 	}
 
+	if (sa->esn > 0) {
+		sess_conf.ipsec.options.esn = 1;
+		sess_conf.ipsec.esn.value = sa->esn;
+	}
+
 	struct rte_flow_action_security action_security;
 	struct rte_flow_error err;
 
diff --git a/examples/ipsec-secgw/ipsec.h b/examples/ipsec-secgw/ipsec.h
index 4f12c57dc3..db7988604a 100644
--- a/examples/ipsec-secgw/ipsec.h
+++ b/examples/ipsec-secgw/ipsec.h
@@ -146,6 +146,8 @@ struct ipsec_sa {
 	uint8_t udp_encap;
 	uint16_t portid;
 	uint16_t mss;
+	uint16_t esn;
+
 	uint8_t fdir_qid;
 	uint8_t fdir_flag;
 
diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c
index 37039e70fc..3ee5ed7dcf 100644
--- a/examples/ipsec-secgw/sa.c
+++ b/examples/ipsec-secgw/sa.c
@@ -711,6 +711,16 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
 			continue;
 		}
 
+		if (strcmp(tokens[ti], "esn") == 0) {
+			INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+			if (status->status < 0)
+				return;
+			rule->esn = atoll(tokens[ti]);
+			if (status->status < 0)
+				return;
+			continue;
+		}
+
 		if (strcmp(tokens[ti], "fallback") == 0) {
 			struct rte_ipsec_session *fb;
 
@@ -1387,6 +1397,11 @@ fill_ipsec_sa_prm(struct rte_ipsec_sa_prm *prm, const struct ipsec_sa *ss,
 		prm->ipsec_xform.mss = ss->mss;
 	}
 
+	if (ss->esn > 0) {
+		prm->ipsec_xform.options.esn = 1;
+		prm->ipsec_xform.esn.value = ss->esn;
+	}
+
 	if (IS_TRANSPORT(ss->flags)) {
 		/* transport mode */
 		prm->trs.proto = rc;
-- 
2.25.1