[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.dohe...@intel.com>
Signed-off-by: Radu Nicolau <radu.nico...@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