From d816fdea557c997b24650807bb7616907c418864 Mon Sep 17 00:00:00 2001 From: Akhil Goyal Date: Fri, 24 Mar 2017 14:59:20 +0530 Subject: [PATCH] cryptodev: add API to associate session with queue pair HW based crypto drivers may only support limited number of sessions per queue pair. This requires support for attaching sessions to specific queue pair. New APIs are introduced to attach/detach a session with/from a particular queue pair. These are optional APIs. Application can call attach API after creating a session and can call detach API before deleting a session. Application needs to check if max_nb_sessions_per_qp > 0, then it should call the attach API. max_nb_sessions_per_qp = 0 means infinite sessions per qp Signed-off-by: Akhil Goyal Acked-by: Fiona Trahe --- doc/guides/rel_notes/deprecation.rst | 5 -- doc/guides/rel_notes/release_17_05.rst | 3 ++ lib/librte_cryptodev/rte_cryptodev.c | 47 +++++++++++++++++++ lib/librte_cryptodev/rte_cryptodev.h | 34 ++++++++++++++ lib/librte_cryptodev/rte_cryptodev_pmd.h | 29 ++++++++++++ .../rte_cryptodev_version.map | 2 + 6 files changed, 115 insertions(+), 5 deletions(-) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 6bf245d8bc..7d730192f2 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -75,8 +75,3 @@ Deprecation Notices PMDs that implement the latter. Target release for removal of the legacy API will be defined once most PMDs have switched to rte_flow. - -* cryptodev: A new parameter ``max_nb_sessions_per_qp`` will be added to - ``rte_cryptodev_info.sym``. Some drivers may support limited number of - sessions per queue_pair. With this new parameter application will know - how many sessions can be mapped to each queue_pair of a device. diff --git a/doc/guides/rel_notes/release_17_05.rst b/doc/guides/rel_notes/release_17_05.rst index 310536e53e..7bc23d0a5b 100644 --- a/doc/guides/rel_notes/release_17_05.rst +++ b/doc/guides/rel_notes/release_17_05.rst @@ -408,6 +408,9 @@ ABI Changes The order and size of the fields in the ``mbuf`` structure changed, as described in the `New Features`_ section. +* The ``rte_cryptodev_info.sym`` structure has new field ``max_nb_sessions_per_qp`` + to support drivers which may support limited number of sessions per queue_pair. + Removed Items ------------- diff --git a/lib/librte_cryptodev/rte_cryptodev.c b/lib/librte_cryptodev/rte_cryptodev.c index 114dd57127..30fd86e493 100644 --- a/lib/librte_cryptodev/rte_cryptodev.c +++ b/lib/librte_cryptodev/rte_cryptodev.c @@ -1399,6 +1399,53 @@ rte_cryptodev_sym_session_create(uint8_t dev_id, return sess; } +int +rte_cryptodev_queue_pair_attach_sym_session(uint16_t qp_id, + struct rte_cryptodev_sym_session *sess) +{ + struct rte_cryptodev *dev; + + if (!rte_cryptodev_pmd_is_valid_dev(sess->dev_id)) { + CDEV_LOG_ERR("Invalid dev_id=%d", sess->dev_id); + return -EINVAL; + } + + dev = &rte_crypto_devices[sess->dev_id]; + + /* The API is optional, not returning error if driver do not suuport */ + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->qp_attach_session, 0); + if (dev->dev_ops->qp_attach_session(dev, qp_id, sess->_private)) { + CDEV_LOG_ERR("dev_id %d failed to attach qp: %d with session", + sess->dev_id, qp_id); + return -EPERM; + } + + return 0; +} + +int +rte_cryptodev_queue_pair_detach_sym_session(uint16_t qp_id, + struct rte_cryptodev_sym_session *sess) +{ + struct rte_cryptodev *dev; + + if (!rte_cryptodev_pmd_is_valid_dev(sess->dev_id)) { + CDEV_LOG_ERR("Invalid dev_id=%d", sess->dev_id); + return -EINVAL; + } + + dev = &rte_crypto_devices[sess->dev_id]; + + /* The API is optional, not returning error if driver do not suuport */ + RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->qp_detach_session, 0); + if (dev->dev_ops->qp_detach_session(dev, qp_id, sess->_private)) { + CDEV_LOG_ERR("dev_id %d failed to detach qp: %d from session", + sess->dev_id, qp_id); + return -EPERM; + } + + return 0; +} struct rte_cryptodev_sym_session * rte_cryptodev_sym_session_free(uint8_t dev_id, struct rte_cryptodev_sym_session *sess) diff --git a/lib/librte_cryptodev/rte_cryptodev.h b/lib/librte_cryptodev/rte_cryptodev.h index d61a43eb74..f5fba131d6 100644 --- a/lib/librte_cryptodev/rte_cryptodev.h +++ b/lib/librte_cryptodev/rte_cryptodev.h @@ -332,6 +332,10 @@ struct rte_cryptodev_info { struct { unsigned max_nb_sessions; /**< Maximum number of sessions supported by device. */ + unsigned int max_nb_sessions_per_qp; + /**< Maximum number of sessions per queue pair. + * Default 0 for infinite sessions + */ } sym; }; @@ -915,6 +919,36 @@ extern struct rte_cryptodev_sym_session * rte_cryptodev_sym_session_free(uint8_t dev_id, struct rte_cryptodev_sym_session *session); +/** + * Attach queue pair with sym session. + * + * @param qp_id Queue pair to which session will be attached. + * @param session Session pointer previously allocated by + * *rte_cryptodev_sym_session_create*. + * + * @return + * - On success, zero. + * - On failure, a negative value. + */ +int +rte_cryptodev_queue_pair_attach_sym_session(uint16_t qp_id, + struct rte_cryptodev_sym_session *session); + +/** + * Detach queue pair with sym session. + * + * @param qp_id Queue pair to which session is attached. + * @param session Session pointer previously allocated by + * *rte_cryptodev_sym_session_create*. + * + * @return + * - On success, zero. + * - On failure, a negative value. + */ +int +rte_cryptodev_queue_pair_detach_sym_session(uint16_t qp_id, + struct rte_cryptodev_sym_session *session); + #ifdef __cplusplus } diff --git a/lib/librte_cryptodev/rte_cryptodev_pmd.h b/lib/librte_cryptodev/rte_cryptodev_pmd.h index 8d95dac934..356b9dc0dc 100644 --- a/lib/librte_cryptodev/rte_cryptodev_pmd.h +++ b/lib/librte_cryptodev/rte_cryptodev_pmd.h @@ -383,6 +383,31 @@ typedef void * (*cryptodev_sym_configure_session_t)(struct rte_cryptodev *dev, typedef void (*cryptodev_sym_free_session_t)(struct rte_cryptodev *dev, void *session_private); +/** + * Optional API for drivers to attach sessions with queue pair. + * @param dev Crypto device pointer + * @param qp_id queue pair id for attaching session + * @param priv_sess Pointer to cryptodev's private session structure + * @return + * - Return 0 on success + */ +typedef int (*cryptodev_sym_queue_pair_attach_session_t)( + struct rte_cryptodev *dev, + uint16_t qp_id, + void *session_private); + +/** + * Optional API for drivers to detach sessions from queue pair. + * @param dev Crypto device pointer + * @param qp_id queue pair id for detaching session + * @param priv_sess Pointer to cryptodev's private session structure + * @return + * - Return 0 on success + */ +typedef int (*cryptodev_sym_queue_pair_detach_session_t)( + struct rte_cryptodev *dev, + uint16_t qp_id, + void *session_private); /** Crypto device operations function pointer table */ struct rte_cryptodev_ops { @@ -417,6 +442,10 @@ struct rte_cryptodev_ops { /**< Configure a Crypto session. */ cryptodev_sym_free_session_t session_clear; /**< Clear a Crypto sessions private data. */ + cryptodev_sym_queue_pair_attach_session_t qp_attach_session; + /**< Attach session to queue pair. */ + cryptodev_sym_queue_pair_attach_session_t qp_detach_session; + /**< Detach session from queue pair. */ }; diff --git a/lib/librte_cryptodev/rte_cryptodev_version.map b/lib/librte_cryptodev/rte_cryptodev_version.map index 831a15cabc..9ac510ec93 100644 --- a/lib/librte_cryptodev/rte_cryptodev_version.map +++ b/lib/librte_cryptodev/rte_cryptodev_version.map @@ -70,5 +70,7 @@ DPDK_17.05 { rte_cryptodev_get_auth_algo_enum; rte_cryptodev_get_cipher_algo_enum; + rte_cryptodev_queue_pair_attach_sym_session; + rte_cryptodev_queue_pair_detach_sym_session; } DPDK_17.02; -- 2.20.1