From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id 44BEC1BBB1 for ; Wed, 4 Apr 2018 08:33:51 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Apr 2018 23:33:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,405,1517904000"; d="scan'208";a="213777429" Received: from unknown (HELO localhost.localdomain) ([10.224.122.195]) by orsmga005.jf.intel.com with ESMTP; 03 Apr 2018 23:33:47 -0700 From: Abhinandan Gujjar To: pablo.de.lara.guarch@intel.com, declan.doherty@intel.com, jerin.jacob@caviumnetworks.com, hemant.agrawal@nxp.com, akhil.goyal@nxp.com, dev@dpdk.org Cc: narender.vangati@intel.com, abhinandan.gujjar@intel.com, nikhil.rao@intel.com Date: Wed, 4 Apr 2018 12:04:16 +0530 Message-Id: <1522823656-59973-1-git-send-email-abhinandan.gujjar@intel.com> X-Mailer: git-send-email 1.9.1 Subject: [dpdk-dev] [dpdk-dev, v1, 2/3] cryptodev: add support to set session private data X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Apr 2018 06:33:51 -0000 The application may want to store private data along with the rte_cryptodev that is transparent to the rte_cryptodev layer. For e.g., If an eventdev based application is submitting a rte_cryptodev_sym_session operation and wants to indicate event information required to construct a new event that will be enqueued to eventdev after completion of the rte_cryptodev_sym_session operation. This patch provides a mechanism for the application to associate this information with the rte_cryptodev_sym_session session. The application can set the private data using rte_cryptodev_sym_session_set_private_data() and retrieve it using rte_cryptodev_sym_session_get_private_data(). Signed-off-by: Abhinandan Gujjar Signed-off-by: Nikhil Rao --- lib/librte_cryptodev/rte_cryptodev.c | 43 +++++++++++++++++++++++--- lib/librte_cryptodev/rte_cryptodev.h | 32 +++++++++++++++++++ lib/librte_cryptodev/rte_cryptodev_version.map | 7 +++++ 3 files changed, 78 insertions(+), 4 deletions(-) diff --git a/lib/librte_cryptodev/rte_cryptodev.c b/lib/librte_cryptodev/rte_cryptodev.c index 8745b6b..5275111 100644 --- a/lib/librte_cryptodev/rte_cryptodev.c +++ b/lib/librte_cryptodev/rte_cryptodev.c @@ -1099,8 +1099,10 @@ struct rte_cryptodev_sym_session * return NULL; } - /* Clear device session pointer */ - memset(sess, 0, (sizeof(void *) * nb_drivers)); + /* Clear device session pointer. + * Include the flag indicating presence of private data + */ + memset(sess, 0, (sizeof(void *) * nb_drivers) + sizeof(uint8_t)); return sess; } @@ -1204,9 +1206,10 @@ struct rte_cryptodev_sym_session * { /* * Header contains pointers to the private data - * of all registered drivers + * of all registered drivers, and a flag which + * indicates presence of private data */ - return (sizeof(void *) * nb_drivers); + return ((sizeof(void *) * nb_drivers) + sizeof(uint8_t)); } unsigned int @@ -1238,6 +1241,38 @@ struct rte_cryptodev_sym_session * } +int +rte_cryptodev_sym_session_set_private_data( + struct rte_cryptodev_sym_session *sess, + void *data, + uint16_t size) +{ + uint16_t off_set = sizeof(void *) * nb_drivers; + uint8_t *private_data_present = (uint8_t *)sess + off_set; + + if (sess == NULL) + return -EINVAL; + + *private_data_present = 1; + off_set += sizeof(uint8_t); + rte_memcpy((uint8_t *)sess + off_set, data, size); + return 0; +} + +void * +rte_cryptodev_sym_session_get_private_data( + struct rte_cryptodev_sym_session *sess) +{ + uint16_t off_set = sizeof(void *) * nb_drivers; + uint8_t *private_data_present = (uint8_t *)sess + off_set; + + if (sess == NULL || !*private_data_present) + return NULL; + + off_set += sizeof(uint8_t); + return (uint8_t *)sess + off_set; +} + /** Initialise rte_crypto_op mempool element */ static void rte_crypto_op_init(struct rte_mempool *mempool, diff --git a/lib/librte_cryptodev/rte_cryptodev.h b/lib/librte_cryptodev/rte_cryptodev.h index c8fa689..a75b3da 100644 --- a/lib/librte_cryptodev/rte_cryptodev.h +++ b/lib/librte_cryptodev/rte_cryptodev.h @@ -1037,6 +1037,38 @@ struct rte_cryptodev_sym_session * */ const char *rte_cryptodev_driver_name_get(uint8_t driver_id); +/** + * Set private data for a session. + * + * @param sess Session pointer allocated by + * *rte_cryptodev_sym_session_create*. + * @param data Pointer to the private data. + * @param size Size of the private data. + * + * @return + * - On success, zero. + * - On failure, a negative value. + */ +int +rte_cryptodev_sym_session_set_private_data( + struct rte_cryptodev_sym_session *sess, + void *data, + uint16_t size); + +/** + * Get private data of a session. + * + * @param sess Session pointer allocated by + * *rte_cryptodev_sym_session_create*. + * + * @return + * - On success return pointer to private data. + * - On failure returns NULL. + */ +void * +rte_cryptodev_sym_session_get_private_data( + struct rte_cryptodev_sym_session *sess); + #ifdef __cplusplus } #endif diff --git a/lib/librte_cryptodev/rte_cryptodev_version.map b/lib/librte_cryptodev/rte_cryptodev_version.map index eb47308..c3a3fda 100644 --- a/lib/librte_cryptodev/rte_cryptodev_version.map +++ b/lib/librte_cryptodev/rte_cryptodev_version.map @@ -85,3 +85,10 @@ DPDK_17.11 { rte_cryptodev_pmd_parse_input_args; } DPDK_17.08; + +DPDK_18.05 { + global: + + rte_cryptodev_sym_session_set_private_data; + rte_cryptodev_sym_session_get_private_data; +} DPDK_17.11; -- 1.9.1