[dpdk-dev] [PATCH] examples/ipsec-secgw: fix session mempool initialisation

[Vladimir Medvedkin <vladimir.medvedkin@intel.com>]

Creation of a session mempool may fail in the case of a single lcore
and a low number of SA.

Fixes: e30b2833c47c ("security: update session create API")
Cc: akhil.goyal@nxp.com

Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
---
 examples/ipsec-secgw/ipsec-secgw.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
index 2219148..935829e 100644
--- a/examples/ipsec-secgw/ipsec-secgw.c
+++ b/examples/ipsec-secgw/ipsec-secgw.c
@@ -65,6 +65,7 @@ volatile bool force_quit;
 #define CDEV_QUEUE_DESC 2048
 #define CDEV_MAP_ENTRIES 16384
 #define CDEV_MP_CACHE_SZ 64
+#define CDEV_MP_CACHE_MULTIPLIER 1.5 /* from rte_mempool.c */
 #define MAX_QUEUE_PAIRS 1
 
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
@@ -2350,6 +2351,8 @@ session_pool_init(struct socket_ctx *ctx, int32_t socket_id, size_t sess_sz)
 			"sess_mp_%u", socket_id);
 	nb_sess = (get_nb_crypto_sessions() + CDEV_MP_CACHE_SZ *
 		rte_lcore_count());
+	nb_sess = RTE_MAX(nb_sess, CDEV_MP_CACHE_SZ *
+			CDEV_MP_CACHE_MULTIPLIER);
 	sess_mp = rte_cryptodev_sym_session_pool_create(
 			mp_name, nb_sess, sess_sz, CDEV_MP_CACHE_SZ, 0,
 			socket_id);
@@ -2374,6 +2377,8 @@ session_priv_pool_init(struct socket_ctx *ctx, int32_t socket_id,
 			"sess_mp_priv_%u", socket_id);
 	nb_sess = (get_nb_crypto_sessions() + CDEV_MP_CACHE_SZ *
 		rte_lcore_count());
+	nb_sess = RTE_MAX(nb_sess, CDEV_MP_CACHE_SZ *
+			CDEV_MP_CACHE_MULTIPLIER);
 	sess_mp = rte_mempool_create(mp_name,
 			nb_sess,
 			sess_sz,
-- 
2.7.4