New upstream version 17.11-rc3
[deb_dpdk.git] / drivers / crypto / armv8 / rte_armv8_pmd.c
index 3d603a5..97719f2 100644 (file)
@@ -1,7 +1,7 @@
 /*
  *   BSD LICENSE
  *
- *   Copyright (C) Cavium networks Ltd. 2017.
+ *   Copyright (C) Cavium, Inc. 2017.
  *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
@@ -13,7 +13,7 @@
  *       notice, this list of conditions and the following disclaimer in
  *       the documentation and/or other materials provided with the
  *       distribution.
- *     * Neither the name of Cavium networks nor the names of its
+ *     * Neither the name of Cavium, Inc nor the names of its
  *       contributors may be used to endorse or promote products derived
  *       from this software without specific prior written permission.
  *
@@ -36,7 +36,7 @@
 #include <rte_hexdump.h>
 #include <rte_cryptodev.h>
 #include <rte_cryptodev_pmd.h>
-#include <rte_vdev.h>
+#include <rte_bus_vdev.h>
 #include <rte_malloc.h>
 #include <rte_cpuflags.h>
 
@@ -44,6 +44,8 @@
 
 #include "rte_armv8_pmd_private.h"
 
+static uint8_t cryptodev_driver_id;
+
 static int cryptodev_armv8_crypto_uninit(struct rte_vdev_device *vdev);
 
 /**
@@ -288,27 +290,14 @@ auth_set_prerequisites(struct armv8_crypto_session *sess,
                 * Generate authentication key, i_key_pad and o_key_pad.
                 */
                /* Zero memory under key */
-               memset(sess->auth.hmac.key, 0, SHA1_AUTH_KEY_LENGTH);
-
-               if (xform->auth.key.length > SHA1_AUTH_KEY_LENGTH) {
-                       /*
-                        * In case the key is longer than 160 bits
-                        * the algorithm will use SHA1(key) instead.
-                        */
-                       error = sha1_block(NULL, xform->auth.key.data,
-                               sess->auth.hmac.key, xform->auth.key.length);
-                       if (error != 0)
-                               return -1;
-               } else {
-                       /*
-                        * Now copy the given authentication key to the session
-                        * key assuming that the session key is zeroed there is
-                        * no need for additional zero padding if the key is
-                        * shorter than SHA1_AUTH_KEY_LENGTH.
-                        */
-                       rte_memcpy(sess->auth.hmac.key, xform->auth.key.data,
-                                                       xform->auth.key.length);
-               }
+               memset(sess->auth.hmac.key, 0, SHA1_BLOCK_SIZE);
+
+               /*
+                * Now copy the given authentication key to the session
+                * key.
+                */
+               rte_memcpy(sess->auth.hmac.key, xform->auth.key.data,
+                                               xform->auth.key.length);
 
                /* Prepare HMAC padding: key|pattern */
                auth_hmac_pad_prepare(sess, xform);
@@ -334,27 +323,14 @@ auth_set_prerequisites(struct armv8_crypto_session *sess,
                 * Generate authentication key, i_key_pad and o_key_pad.
                 */
                /* Zero memory under key */
-               memset(sess->auth.hmac.key, 0, SHA256_AUTH_KEY_LENGTH);
-
-               if (xform->auth.key.length > SHA256_AUTH_KEY_LENGTH) {
-                       /*
-                        * In case the key is longer than 256 bits
-                        * the algorithm will use SHA256(key) instead.
-                        */
-                       error = sha256_block(NULL, xform->auth.key.data,
-                               sess->auth.hmac.key, xform->auth.key.length);
-                       if (error != 0)
-                               return -1;
-               } else {
-                       /*
-                        * Now copy the given authentication key to the session
-                        * key assuming that the session key is zeroed there is
-                        * no need for additional zero padding if the key is
-                        * shorter than SHA256_AUTH_KEY_LENGTH.
-                        */
-                       rte_memcpy(sess->auth.hmac.key, xform->auth.key.data,
-                                                       xform->auth.key.length);
-               }
+               memset(sess->auth.hmac.key, 0, SHA256_BLOCK_SIZE);
+
+               /*
+                * Now copy the given authentication key to the session
+                * key.
+                */
+               rte_memcpy(sess->auth.hmac.key, xform->auth.key.data,
+                                               xform->auth.key.length);
 
                /* Prepare HMAC padding: key|pattern */
                auth_hmac_pad_prepare(sess, xform);
@@ -414,7 +390,7 @@ armv8_crypto_set_session_chained_parameters(struct armv8_crypto_session *sess,
                order = sess->chain_order;
                break;
        default:
-               return -EINVAL;
+               return -ENOTSUP;
        }
        /* Select cipher direction */
        sess->cipher.direction = cipher_xform->cipher.op;
@@ -431,10 +407,10 @@ armv8_crypto_set_session_chained_parameters(struct armv8_crypto_session *sess,
        case RTE_CRYPTO_CIPHER_AES_CBC:
                sess->cipher.algo = calg;
                /* IV len is always 16 bytes (block size) for AES CBC */
-               sess->cipher.iv_len = 16;
+               sess->cipher.iv.length = 16;
                break;
        default:
-               return -EINVAL;
+               return -ENOTSUP;
        }
        /* Select auth generate/verify */
        sess->auth.operation = auth_xform->auth.op;
@@ -448,9 +424,12 @@ armv8_crypto_set_session_chained_parameters(struct armv8_crypto_session *sess,
                sess->auth.mode = ARMV8_CRYPTO_AUTH_AS_HMAC;
                break;
        default:
-               return -EINVAL;
+               return -ENOTSUP;
        }
 
+       /* Set the digest length */
+       sess->auth.digest_length = auth_xform->auth.digest_length;
+
        /* Verify supported key lengths and extract proper algorithm */
        switch (cipher_xform->cipher.key.length << 3) {
        case 128:
@@ -465,7 +444,7 @@ armv8_crypto_set_session_chained_parameters(struct armv8_crypto_session *sess,
        default: /* Fall through */
                sess->crypto_func = NULL;
                sess->cipher.key_sched = NULL;
-               return -EINVAL;
+               return -ENOTSUP;
        }
 
        if (unlikely(sess->crypto_func == NULL)) {
@@ -519,20 +498,23 @@ armv8_crypto_set_session_parameters(struct armv8_crypto_session *sess,
                break;
        default:
                is_chained_op = false;
-               return -EINVAL;
+               return -ENOTSUP;
        }
 
+       /* Set IV offset */
+       sess->cipher.iv.offset = cipher_xform->cipher.iv.offset;
+
        if (is_chained_op) {
                ret = armv8_crypto_set_session_chained_parameters(sess,
                                                cipher_xform, auth_xform);
                if (unlikely(ret != 0)) {
                        ARMV8_CRYPTO_LOG_ERR(
                        "Invalid/unsupported chained (cipher/auth) parameters");
-                       return -EINVAL;
+                       return ret;
                }
        } else {
                ARMV8_CRYPTO_LOG_ERR("Invalid/unsupported operation");
-               return -EINVAL;
+               return -ENOTSUP;
        }
 
        return 0;
@@ -544,30 +526,36 @@ get_session(struct armv8_crypto_qp *qp, struct rte_crypto_op *op)
 {
        struct armv8_crypto_session *sess = NULL;
 
-       if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_WITH_SESSION) {
+       if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
                /* get existing session */
-               if (likely(op->sym->session != NULL &&
-                               op->sym->session->dev_type ==
-                               RTE_CRYPTODEV_ARMV8_PMD)) {
+               if (likely(op->sym->session != NULL)) {
                        sess = (struct armv8_crypto_session *)
-                               op->sym->session->_private;
+                                       get_session_private_data(
+                                       op->sym->session,
+                                       cryptodev_driver_id);
                }
        } else {
                /* provide internal session */
                void *_sess = NULL;
+               void *_sess_private_data = NULL;
 
-               if (!rte_mempool_get(qp->sess_mp, (void **)&_sess)) {
-                       sess = (struct armv8_crypto_session *)
-                               ((struct rte_cryptodev_sym_session *)_sess)
-                               ->_private;
-
-                       if (unlikely(armv8_crypto_set_session_parameters(
-                                       sess, op->sym->xform) != 0)) {
-                               rte_mempool_put(qp->sess_mp, _sess);
-                               sess = NULL;
-                       } else
-                               op->sym->session = _sess;
+               if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
+                       return NULL;
+
+               if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))
+                       return NULL;
+
+               sess = (struct armv8_crypto_session *)_sess_private_data;
+
+               if (unlikely(armv8_crypto_set_session_parameters(sess,
+                               op->sym->xform) != 0)) {
+                       rte_mempool_put(qp->sess_mp, _sess);
+                       rte_mempool_put(qp->sess_mp, _sess_private_data);
+                       sess = NULL;
                }
+               op->sym->session = (struct rte_cryptodev_sym_session *)_sess;
+               set_session_private_data(op->sym->session, cryptodev_driver_id,
+                       _sess_private_data);
        }
 
        if (unlikely(sess == NULL))
@@ -586,8 +574,8 @@ get_session(struct armv8_crypto_qp *qp, struct rte_crypto_op *op)
 
 /** Process cipher operation */
 static inline void
-process_armv8_chained_op
-               (struct rte_crypto_op *op, struct armv8_crypto_session *sess,
+process_armv8_chained_op(struct armv8_crypto_qp *qp, struct rte_crypto_op *op,
+               struct armv8_crypto_session *sess,
                struct rte_mbuf *mbuf_src, struct rte_mbuf *mbuf_dst)
 {
        crypto_func_t crypto_func;
@@ -644,16 +632,11 @@ process_armv8_chained_op
                                        op->sym->auth.data.length);
                }
        } else {
-               adst = (uint8_t *)rte_pktmbuf_append(m_asrc,
-                               op->sym->auth.digest.length);
-       }
-
-       if (unlikely(op->sym->cipher.iv.length != sess->cipher.iv_len)) {
-               op->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
-               return;
+               adst = qp->temp_digest;
        }
 
-       arg.cipher.iv = op->sym->cipher.iv.data;
+       arg.cipher.iv = rte_crypto_op_ctod_offset(op, uint8_t *,
+                                       sess->cipher.iv.offset);
        arg.cipher.key = sess->cipher.key.data;
        /* Acquire combined mode function */
        crypto_func = sess->crypto_func;
@@ -667,18 +650,15 @@ process_armv8_chained_op
        op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
        if (sess->auth.operation == RTE_CRYPTO_AUTH_OP_VERIFY) {
                if (memcmp(adst, op->sym->auth.digest.data,
-                               op->sym->auth.digest.length) != 0) {
+                               sess->auth.digest_length) != 0) {
                        op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
                }
-               /* Trim area used for digest from mbuf. */
-               rte_pktmbuf_trim(m_asrc,
-                               op->sym->auth.digest.length);
        }
 }
 
 /** Process crypto operation for mbuf */
 static inline int
-process_op(const struct armv8_crypto_qp *qp, struct rte_crypto_op *op,
+process_op(struct armv8_crypto_qp *qp, struct rte_crypto_op *op,
                struct armv8_crypto_session *sess)
 {
        struct rte_mbuf *msrc, *mdst;
@@ -691,7 +671,7 @@ process_op(const struct armv8_crypto_qp *qp, struct rte_crypto_op *op,
        switch (sess->chain_order) {
        case ARMV8_CRYPTO_CHAIN_CIPHER_AUTH:
        case ARMV8_CRYPTO_CHAIN_AUTH_CIPHER: /* Fall through */
-               process_armv8_chained_op(op, sess, msrc, mdst);
+               process_armv8_chained_op(qp, op, sess, msrc, mdst);
                break;
        default:
                op->status = RTE_CRYPTO_OP_STATUS_ERROR;
@@ -699,8 +679,11 @@ process_op(const struct armv8_crypto_qp *qp, struct rte_crypto_op *op,
        }
 
        /* Free session if a session-less crypto op */
-       if (op->sym->sess_type == RTE_CRYPTO_SYM_OP_SESSIONLESS) {
+       if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
                memset(sess, 0, sizeof(struct armv8_crypto_session));
+               memset(op->sym->session, 0,
+                               rte_cryptodev_get_header_session_size());
+               rte_mempool_put(qp->sess_mp, sess);
                rte_mempool_put(qp->sess_mp, op->sym->session);
                op->sym->session = NULL;
        }
@@ -775,7 +758,7 @@ armv8_crypto_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
 static int
 cryptodev_armv8_crypto_create(const char *name,
                        struct rte_vdev_device *vdev,
-                       struct rte_crypto_vdev_init_params *init_params)
+                       struct rte_cryptodev_pmd_init_params *init_params)
 {
        struct rte_cryptodev *dev;
        struct armv8_crypto_private *internals;
@@ -802,19 +785,13 @@ cryptodev_armv8_crypto_create(const char *name,
                return -EFAULT;
        }
 
-       if (init_params->name[0] == '\0')
-               snprintf(init_params->name, sizeof(init_params->name),
-                               "%s", name);
-
-       dev = rte_cryptodev_pmd_virtual_dev_init(init_params->name,
-                               sizeof(struct armv8_crypto_private),
-                               init_params->socket_id);
+       dev = rte_cryptodev_pmd_create(name, &vdev->device, init_params);
        if (dev == NULL) {
                ARMV8_CRYPTO_LOG_ERR("failed to create cryptodev vdev");
                goto init_error;
        }
 
-       dev->dev_type = RTE_CRYPTODEV_ARMV8_PMD;
+       dev->driver_id = cryptodev_driver_id;
        dev->dev_ops = rte_armv8_crypto_pmd_ops;
 
        /* register rx/tx burst functions for data path */
@@ -847,11 +824,12 @@ init_error:
 static int
 cryptodev_armv8_crypto_init(struct rte_vdev_device *vdev)
 {
-       struct rte_crypto_vdev_init_params init_params = {
-               RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_QUEUE_PAIRS,
-               RTE_CRYPTODEV_VDEV_DEFAULT_MAX_NB_SESSIONS,
+       struct rte_cryptodev_pmd_init_params init_params = {
+               "",
+               sizeof(struct armv8_crypto_private),
                rte_socket_id(),
-               {0}
+               RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_QUEUE_PAIRS,
+               RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_SESSIONS
        };
        const char *name;
        const char *input_args;
@@ -860,18 +838,7 @@ cryptodev_armv8_crypto_init(struct rte_vdev_device *vdev)
        if (name == NULL)
                return -EINVAL;
        input_args = rte_vdev_device_args(vdev);
-       rte_cryptodev_parse_vdev_init_params(&init_params, input_args);
-
-       RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
-                       init_params.socket_id);
-       if (init_params.name[0] != '\0') {
-               RTE_LOG(INFO, PMD, "  User defined name = %s\n",
-                       init_params.name);
-       }
-       RTE_LOG(INFO, PMD, "  Max number of queue pairs = %d\n",
-                       init_params.max_nb_queue_pairs);
-       RTE_LOG(INFO, PMD, "  Max number of sessions = %d\n",
-                       init_params.max_nb_sessions);
+       rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
 
        return cryptodev_armv8_crypto_create(name, vdev, &init_params);
 }
@@ -880,6 +847,7 @@ cryptodev_armv8_crypto_init(struct rte_vdev_device *vdev)
 static int
 cryptodev_armv8_crypto_uninit(struct rte_vdev_device *vdev)
 {
+       struct rte_cryptodev *cryptodev;
        const char *name;
 
        name = rte_vdev_device_name(vdev);
@@ -890,17 +858,25 @@ cryptodev_armv8_crypto_uninit(struct rte_vdev_device *vdev)
                "Closing ARMv8 crypto device %s on numa socket %u\n",
                name, rte_socket_id());
 
-       return 0;
+       cryptodev = rte_cryptodev_pmd_get_named_dev(name);
+       if (cryptodev == NULL)
+               return -ENODEV;
+
+       return rte_cryptodev_pmd_destroy(cryptodev);
 }
 
-static struct rte_vdev_driver armv8_crypto_drv = {
+static struct rte_vdev_driver armv8_crypto_pmd_drv = {
        .probe = cryptodev_armv8_crypto_init,
        .remove = cryptodev_armv8_crypto_uninit
 };
 
-RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_ARMV8_PMD, armv8_crypto_drv);
+static struct cryptodev_driver armv8_crypto_drv;
+
+RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_ARMV8_PMD, armv8_crypto_pmd_drv);
 RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_ARMV8_PMD, cryptodev_armv8_pmd);
 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_ARMV8_PMD,
        "max_nb_queue_pairs=<int> "
        "max_nb_sessions=<int> "
        "socket_id=<int>");
+RTE_PMD_REGISTER_CRYPTO_DRIVER(armv8_crypto_drv, armv8_crypto_pmd_drv,
+               cryptodev_driver_id);