crypto/qat: add multi-process handling of driver ID

[dpdk.git] / drivers / crypto / qat / qat_sym_pmd.c

diff --git a/drivers/crypto/qat/qat_sym_pmd.c b/drivers/crypto/qat/qat_sym_pmd.c
index bdcb42e..6ef9a34 100644 (file)
--- a/drivers/crypto/qat/qat_sym_pmd.c
+++ b/drivers/crypto/qat/qat_sym_pmd.c
@@ -19,7 +19,7 @@
 
 #define MIXED_CRYPTO_MIN_FW_VER 0x04090000
 
-uint8_t cryptodev_qat_driver_id;
+uint8_t qat_sym_driver_id;
 
 static const struct rte_cryptodev_capabilities qat_gen1_sym_capabilities[] = {
        QAT_BASE_GEN1_SYM_CAPABILITIES,
@@ -92,7 +92,7 @@ static void qat_sym_dev_info_get(struct rte_cryptodev *dev,
                        qat_qps_per_service(sym_hw_qps, QAT_SERVICE_SYMMETRIC);
                info->feature_flags = dev->feature_flags;
                info->capabilities = internals->qat_dev_capabilities;
-               info->driver_id = cryptodev_qat_driver_id;
+               info->driver_id = qat_sym_driver_id;
                /* No limit of number of sessions */
                info->sym.max_nb_sessions = 0;
        }
@@ -317,6 +317,25 @@ qat_sym_dev_create(struct qat_pci_device *qat_pci_dev,
        struct rte_cryptodev *cryptodev;
        struct qat_sym_dev_private *internals;
 
+       /*
+        * All processes must use same driver id so they can share sessions.
+        * Store driver_id so we can validate that all processes have the same
+        * value, typically they have, but could differ if binaries built
+        * separately.
+        */
+       if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+               qat_pci_dev->qat_sym_driver_id =
+                               qat_sym_driver_id;
+       } else if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+               if (qat_pci_dev->qat_sym_driver_id !=
+                               qat_sym_driver_id) {
+                       QAT_LOG(ERR,
+                               "Device %s have different driver id than corresponding device in primary process",
+                               name);
+                       return -(EFAULT);
+               }
+       }
+
 #ifdef RTE_LIBRTE_SECURITY
        struct rte_security_ctx *security_instance;
 #endif
@@ -338,7 +357,7 @@ qat_sym_dev_create(struct qat_pci_device *qat_pci_dev,
                return -ENODEV;
 
        qat_dev_instance->sym_rte_dev.name = cryptodev->data->name;
-       cryptodev->driver_id = cryptodev_qat_driver_id;
+       cryptodev->driver_id = qat_sym_driver_id;
        cryptodev->dev_ops = &crypto_qat_ops;
 
        cryptodev->enqueue_burst = qat_sym_pmd_enqueue_op_burst;
@@ -434,4 +453,4 @@ qat_sym_dev_destroy(struct qat_pci_device *qat_pci_dev)
 static struct cryptodev_driver qat_crypto_drv;
 RTE_PMD_REGISTER_CRYPTO_DRIVER(qat_crypto_drv,
                cryptodev_qat_sym_driver,
-               cryptodev_qat_driver_id);
+               qat_sym_driver_id);