[dpdk-dev] [PATCH v4 3/6] doc: announce deprecation for attach/detach crypto session

[Pablo de Lara <pablo.de.lara.guarch@intel.com>]

Functions rte_cryptodev_queue_pair_attach_sym_session
and rte_cryptodev_queue_pair_detach_sym_sessions
are not really used in any of the crypto drivers
(only one driver implements it and it just return 0).
Therefore, this API can be deprecated from 18.05
and removed in 18.08.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
---
 doc/guides/rel_notes/deprecation.rst |  4 ++++
 examples/ipsec-secgw/ipsec.c         | 12 ------------
 lib/librte_cryptodev/rte_cryptodev.h |  4 ++++
 3 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 85945ee72..b5d1cc0d5 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -80,3 +80,7 @@ Deprecation Notices
     is not internal in the crypto device anymore.
   - Replacement of ``pci_dev`` field with the more generic ``rte_device``
     structure.
+  - Functions ``rte_cryptodev_queue_pair_attach_sym_session()`` and
+    ``rte_cryptodev_queue_pair_dettach_sym_session()`` will be deprecated from
+    18.05 and removed in 18.08, as there are no drivers doing anything useful
+    with them.
diff --git a/examples/ipsec-secgw/ipsec.c b/examples/ipsec-secgw/ipsec.c
index 6c896477c..3d415f1af 100644
--- a/examples/ipsec-secgw/ipsec.c
+++ b/examples/ipsec-secgw/ipsec.c
@@ -327,18 +327,6 @@ create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa)
 
 		rte_cryptodev_info_get(ipsec_ctx->tbl[cdev_id_qp].id,
 				&cdev_info);
-		if (cdev_info.sym.max_nb_sessions_per_qp > 0) {
-			ret = rte_cryptodev_queue_pair_attach_sym_session(
-					ipsec_ctx->tbl[cdev_id_qp].id,
-					ipsec_ctx->tbl[cdev_id_qp].qp,
-					sa->crypto_session);
-			if (ret < 0) {
-				RTE_LOG(ERR, IPSEC,
-					"Session cannot be attached to qp %u\n",
-					ipsec_ctx->tbl[cdev_id_qp].qp);
-				return -1;
-			}
-		}
 	}
 	sa->cdev_id_qp = cdev_id_qp;
 
diff --git a/lib/librte_cryptodev/rte_cryptodev.h b/lib/librte_cryptodev/rte_cryptodev.h
index 261a359dc..efd3270e5 100644
--- a/lib/librte_cryptodev/rte_cryptodev.h
+++ b/lib/librte_cryptodev/rte_cryptodev.h
@@ -986,6 +986,7 @@ unsigned int
 rte_cryptodev_get_private_session_size(uint8_t dev_id);
 
 /**
+ * @deprecated
  * Attach queue pair with sym session.
  *
  * @param	dev_id		Device to which the session will be attached.
@@ -997,11 +998,13 @@ rte_cryptodev_get_private_session_size(uint8_t dev_id);
  *  - On success, zero.
  *  - On failure, a negative value.
  */
+__rte_deprecated
 int
 rte_cryptodev_queue_pair_attach_sym_session(uint8_t dev_id, uint16_t qp_id,
 		struct rte_cryptodev_sym_session *session);
 
 /**
+ * @deprecated
  * Detach queue pair with sym session.
  *
  * @param	dev_id		Device to which the session is attached.
@@ -1013,6 +1016,7 @@ rte_cryptodev_queue_pair_attach_sym_session(uint8_t dev_id, uint16_t qp_id,
  *  - On success, zero.
  *  - On failure, a negative value.
  */
+__rte_deprecated
 int
 rte_cryptodev_queue_pair_detach_sym_session(uint8_t dev_id, uint16_t qp_id,
 		struct rte_cryptodev_sym_session *session);
-- 
2.17.0