crypto/qat: support DOCSIS protocol

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

diff --git a/drivers/crypto/qat/qat_sym_session.c b/drivers/crypto/qat/qat_sym_session.c
index 11b459e..c7c2d36 100644 (file)
--- a/drivers/crypto/qat/qat_sym_session.c
+++ b/drivers/crypto/qat/qat_sym_session.c
@@ -14,6 +14,9 @@
 #include <rte_log.h>
 #include <rte_malloc.h>
 #include <rte_crypto_sym.h>
+#ifdef RTE_LIBRTE_SECURITY
+#include <rte_security.h>
+#endif
 
 #include "qat_logs.h"
 #include "qat_sym_session.h"
@@ -2100,3 +2103,153 @@ int qat_sym_validate_zuc_key(int key_len, enum icp_qat_hw_cipher_algo *alg)
        }
        return 0;
 }
+
+#ifdef RTE_LIBRTE_SECURITY
+static int
+qat_sec_session_check_docsis(struct rte_security_session_conf *conf)
+{
+       struct rte_crypto_sym_xform *crypto_sym = conf->crypto_xform;
+       struct rte_security_docsis_xform *docsis = &conf->docsis;
+
+       /* CRC generate -> Cipher encrypt */
+       if (docsis->direction == RTE_SECURITY_DOCSIS_DOWNLINK) {
+
+               if (crypto_sym != NULL &&
+                   crypto_sym->type == RTE_CRYPTO_SYM_XFORM_CIPHER &&
+                   crypto_sym->cipher.op == RTE_CRYPTO_CIPHER_OP_ENCRYPT &&
+                   crypto_sym->cipher.algo ==
+                                       RTE_CRYPTO_CIPHER_AES_DOCSISBPI &&
+                   (crypto_sym->cipher.key.length ==
+                                       ICP_QAT_HW_AES_128_KEY_SZ ||
+                    crypto_sym->cipher.key.length ==
+                                       ICP_QAT_HW_AES_256_KEY_SZ) &&
+                   crypto_sym->cipher.iv.length == ICP_QAT_HW_AES_BLK_SZ &&
+                   crypto_sym->next == NULL) {
+                       return 0;
+               }
+       /* Cipher decrypt -> CRC verify */
+       } else if (docsis->direction == RTE_SECURITY_DOCSIS_UPLINK) {
+
+               if (crypto_sym != NULL &&
+                   crypto_sym->type == RTE_CRYPTO_SYM_XFORM_CIPHER &&
+                   crypto_sym->cipher.op == RTE_CRYPTO_CIPHER_OP_DECRYPT &&
+                   crypto_sym->cipher.algo ==
+                                       RTE_CRYPTO_CIPHER_AES_DOCSISBPI &&
+                   (crypto_sym->cipher.key.length ==
+                                       ICP_QAT_HW_AES_128_KEY_SZ ||
+                    crypto_sym->cipher.key.length ==
+                                       ICP_QAT_HW_AES_256_KEY_SZ) &&
+                   crypto_sym->cipher.iv.length == ICP_QAT_HW_AES_BLK_SZ &&
+                   crypto_sym->next == NULL) {
+                       return 0;
+               }
+       }
+
+       return -EINVAL;
+}
+
+static int
+qat_sec_session_set_docsis_parameters(struct rte_cryptodev *dev,
+               struct rte_security_session_conf *conf, void *session_private)
+{
+       int ret;
+       int qat_cmd_id;
+       struct rte_crypto_sym_xform *xform = NULL;
+       struct qat_sym_session *session = session_private;
+
+       ret = qat_sec_session_check_docsis(conf);
+       if (ret) {
+               QAT_LOG(ERR, "Unsupported DOCSIS security configuration");
+               return ret;
+       }
+
+       xform = conf->crypto_xform;
+
+       /* Verify the session physical address is known */
+       rte_iova_t session_paddr = rte_mempool_virt2iova(session);
+       if (session_paddr == 0 || session_paddr == RTE_BAD_IOVA) {
+               QAT_LOG(ERR,
+                       "Session physical address unknown. Bad memory pool.");
+               return -EINVAL;
+       }
+
+       /* Set context descriptor physical address */
+       session->cd_paddr = session_paddr +
+                       offsetof(struct qat_sym_session, cd);
+
+       session->min_qat_dev_gen = QAT_GEN1;
+
+       /* Get requested QAT command id */
+       qat_cmd_id = qat_get_cmd_id(xform);
+       if (qat_cmd_id < 0 || qat_cmd_id >= ICP_QAT_FW_LA_CMD_DELIMITER) {
+               QAT_LOG(ERR, "Unsupported xform chain requested");
+               return -ENOTSUP;
+       }
+       session->qat_cmd = (enum icp_qat_fw_la_cmd_id)qat_cmd_id;
+       switch (session->qat_cmd) {
+       case ICP_QAT_FW_LA_CMD_CIPHER:
+               ret = qat_sym_session_configure_cipher(dev, xform, session);
+               if (ret < 0)
+                       return ret;
+               break;
+       default:
+               QAT_LOG(ERR, "Unsupported Service %u", session->qat_cmd);
+               return -ENOTSUP;
+       }
+
+       return 0;
+}
+
+int
+qat_security_session_create(void *dev,
+                               struct rte_security_session_conf *conf,
+                               struct rte_security_session *sess,
+                               struct rte_mempool *mempool)
+{
+       void *sess_private_data;
+       struct rte_cryptodev *cdev = (struct rte_cryptodev *)dev;
+       int ret;
+
+       if (rte_mempool_get(mempool, &sess_private_data)) {
+               QAT_LOG(ERR, "Couldn't get object from session mempool");
+               return -ENOMEM;
+       }
+
+       if (conf->protocol != RTE_SECURITY_PROTOCOL_DOCSIS) {
+               QAT_LOG(ERR, "Invalid security protocol");
+               return -EINVAL;
+       }
+
+       ret = qat_sec_session_set_docsis_parameters(cdev, conf,
+                       sess_private_data);
+       if (ret != 0) {
+               QAT_LOG(ERR, "Failed to configure session parameters");
+               /* Return session to mempool */
+               rte_mempool_put(mempool, sess_private_data);
+               return ret;
+       }
+
+       set_sec_session_private_data(sess, sess_private_data);
+
+       return ret;
+}
+
+int
+qat_security_session_destroy(void *dev __rte_unused,
+                                struct rte_security_session *sess)
+{
+       void *sess_priv = get_sec_session_private_data(sess);
+       struct qat_sym_session *s = (struct qat_sym_session *)sess_priv;
+
+       if (sess_priv) {
+               if (s->bpi_ctx)
+                       bpi_cipher_ctx_free(s->bpi_ctx);
+               memset(s, 0, qat_sym_session_get_private_size(dev));
+               struct rte_mempool *sess_mp = rte_mempool_from_obj(sess_priv);
+
+               set_sec_session_private_data(sess, NULL);
+               rte_mempool_put(sess_mp, sess_priv);
+       }
+       return 0;
+}
+#endif