New upstream version 17.11.3
[deb_dpdk.git] / drivers / crypto / zuc / rte_zuc_pmd.c
index 590224b..8b13be9 100644 (file)
@@ -40,7 +40,7 @@
 
 #include "rte_zuc_pmd_private.h"
 
-#define ZUC_MAX_BURST 8
+#define ZUC_MAX_BURST 4
 #define BYTE_LEN 8
 
 static uint8_t cryptodev_driver_id;
@@ -196,10 +196,10 @@ zuc_get_session(struct zuc_qp *qp, struct rte_crypto_op *op)
        return sess;
 }
 
-/** Encrypt/decrypt mbufs with same cipher key. */
+/** Encrypt/decrypt mbufs. */
 static uint8_t
 process_zuc_cipher_op(struct rte_crypto_op **ops,
-               struct zuc_session *session,
+               struct zuc_session **sessions,
                uint8_t num_ops)
 {
        unsigned i;
@@ -208,6 +208,7 @@ process_zuc_cipher_op(struct rte_crypto_op **ops,
        uint8_t *iv[ZUC_MAX_BURST];
        uint32_t num_bytes[ZUC_MAX_BURST];
        uint8_t *cipher_keys[ZUC_MAX_BURST];
+       struct zuc_session *sess;
 
        for (i = 0; i < num_ops; i++) {
                if (((ops[i]->sym->cipher.data.length % BYTE_LEN) != 0)
@@ -218,6 +219,8 @@ process_zuc_cipher_op(struct rte_crypto_op **ops,
                        break;
                }
 
+               sess = sessions[i];
+
 #ifdef RTE_LIBRTE_PMD_ZUC_DEBUG
                if (!rte_pktmbuf_is_contiguous(ops[i]->sym->m_src) ||
                                (ops[i]->sym->m_dst != NULL &&
@@ -239,10 +242,10 @@ process_zuc_cipher_op(struct rte_crypto_op **ops,
                        rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
                                (ops[i]->sym->cipher.data.offset >> 3);
                iv[i] = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
-                               session->cipher_iv_offset);
+                               sess->cipher_iv_offset);
                num_bytes[i] = ops[i]->sym->cipher.data.length >> 3;
 
-               cipher_keys[i] = session->pKey_cipher;
+               cipher_keys[i] = sess->pKey_cipher;
 
                processed_ops++;
        }
@@ -253,10 +256,10 @@ process_zuc_cipher_op(struct rte_crypto_op **ops,
        return processed_ops;
 }
 
-/** Generate/verify hash from mbufs with same hash key. */
+/** Generate/verify hash from mbufs. */
 static int
 process_zuc_hash_op(struct zuc_qp *qp, struct rte_crypto_op **ops,
-               struct zuc_session *session,
+               struct zuc_session **sessions,
                uint8_t num_ops)
 {
        unsigned i;
@@ -265,6 +268,7 @@ process_zuc_hash_op(struct zuc_qp *qp, struct rte_crypto_op **ops,
        uint32_t *dst;
        uint32_t length_in_bits;
        uint8_t *iv;
+       struct zuc_session *sess;
 
        for (i = 0; i < num_ops; i++) {
                /* Data must be byte aligned */
@@ -274,17 +278,19 @@ process_zuc_hash_op(struct zuc_qp *qp, struct rte_crypto_op **ops,
                        break;
                }
 
+               sess = sessions[i];
+
                length_in_bits = ops[i]->sym->auth.data.length;
 
                src = rte_pktmbuf_mtod(ops[i]->sym->m_src, uint8_t *) +
                                (ops[i]->sym->auth.data.offset >> 3);
                iv = rte_crypto_op_ctod_offset(ops[i], uint8_t *,
-                               session->auth_iv_offset);
+                               sess->auth_iv_offset);
 
-               if (session->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
+               if (sess->auth_op == RTE_CRYPTO_AUTH_OP_VERIFY) {
                        dst = (uint32_t *)qp->temp_digest;
 
-                       sso_zuc_eia3_1_buffer(session->pKey_hash,
+                       sso_zuc_eia3_1_buffer(sess->pKey_hash,
                                        iv, src,
                                        length_in_bits, dst);
                        /* Verify digest. */
@@ -294,7 +300,7 @@ process_zuc_hash_op(struct zuc_qp *qp, struct rte_crypto_op **ops,
                } else  {
                        dst = (uint32_t *)ops[i]->sym->auth.digest.data;
 
-                       sso_zuc_eia3_1_buffer(session->pKey_hash,
+                       sso_zuc_eia3_1_buffer(sess->pKey_hash,
                                        iv, src,
                                        length_in_bits, dst);
                }
@@ -304,33 +310,34 @@ process_zuc_hash_op(struct zuc_qp *qp, struct rte_crypto_op **ops,
        return processed_ops;
 }
 
-/** Process a batch of crypto ops which shares the same session. */
+/** Process a batch of crypto ops which shares the same operation type. */
 static int
-process_ops(struct rte_crypto_op **ops, struct zuc_session *session,
+process_ops(struct rte_crypto_op **ops, enum zuc_operation op_type,
+               struct zuc_session **sessions,
                struct zuc_qp *qp, uint8_t num_ops,
                uint16_t *accumulated_enqueued_ops)
 {
        unsigned i;
        unsigned enqueued_ops, processed_ops;
 
-       switch (session->op) {
+       switch (op_type) {
        case ZUC_OP_ONLY_CIPHER:
                processed_ops = process_zuc_cipher_op(ops,
-                               session, num_ops);
+                               sessions, num_ops);
                break;
        case ZUC_OP_ONLY_AUTH:
-               processed_ops = process_zuc_hash_op(qp, ops, session,
+               processed_ops = process_zuc_hash_op(qp, ops, sessions,
                                num_ops);
                break;
        case ZUC_OP_CIPHER_AUTH:
-               processed_ops = process_zuc_cipher_op(ops, session,
+               processed_ops = process_zuc_cipher_op(ops, sessions,
                                num_ops);
-               process_zuc_hash_op(qp, ops, session, processed_ops);
+               process_zuc_hash_op(qp, ops, sessions, processed_ops);
                break;
        case ZUC_OP_AUTH_CIPHER:
-               processed_ops = process_zuc_hash_op(qp, ops, session,
+               processed_ops = process_zuc_hash_op(qp, ops, sessions,
                                num_ops);
-               process_zuc_cipher_op(ops, session, processed_ops);
+               process_zuc_cipher_op(ops, sessions, processed_ops);
                break;
        default:
                /* Operation not supported. */
@@ -346,10 +353,10 @@ process_ops(struct rte_crypto_op **ops, struct zuc_session *session,
                        ops[i]->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
                /* Free session if a session-less crypto op. */
                if (ops[i]->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
-                       memset(session, 0, sizeof(struct zuc_session));
+                       memset(sessions[i], 0, sizeof(struct zuc_session));
                        memset(ops[i]->sym->session, 0,
                                        rte_cryptodev_get_header_session_size());
-                       rte_mempool_put(qp->sess_mp, session);
+                       rte_mempool_put(qp->sess_mp, sessions[i]);
                        rte_mempool_put(qp->sess_mp, ops[i]->sym->session);
                        ops[i]->sym->session = NULL;
                }
@@ -370,7 +377,10 @@ zuc_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
        struct rte_crypto_op *c_ops[ZUC_MAX_BURST];
        struct rte_crypto_op *curr_c_op;
 
-       struct zuc_session *prev_sess = NULL, *curr_sess = NULL;
+       struct zuc_session *curr_sess;
+       struct zuc_session *sessions[ZUC_MAX_BURST];
+       enum zuc_operation prev_zuc_op = ZUC_OP_NOT_SUPPORTED;
+       enum zuc_operation curr_zuc_op;
        struct zuc_qp *qp = queue_pair;
        unsigned i;
        uint8_t burst_size = 0;
@@ -380,9 +390,6 @@ zuc_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
        for (i = 0; i < nb_ops; i++) {
                curr_c_op = ops[i];
 
-               /* Set status as enqueued (not processed yet) by default. */
-               curr_c_op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
-
                curr_sess = zuc_get_session(qp, curr_c_op);
                if (unlikely(curr_sess == NULL ||
                                curr_sess->op == ZUC_OP_NOT_SUPPORTED)) {
@@ -391,50 +398,63 @@ zuc_pmd_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
                        break;
                }
 
-               /* Batch ops that share the same session. */
-               if (prev_sess == NULL) {
-                       prev_sess = curr_sess;
-                       c_ops[burst_size++] = curr_c_op;
-               } else if (curr_sess == prev_sess) {
-                       c_ops[burst_size++] = curr_c_op;
+               curr_zuc_op = curr_sess->op;
+
+               /*
+                * Batch ops that share the same operation type
+                * (cipher only, auth only...).
+                */
+               if (burst_size == 0) {
+                       prev_zuc_op = curr_zuc_op;
+                       c_ops[0] = curr_c_op;
+                       sessions[0] = curr_sess;
+                       burst_size++;
+               } else if (curr_zuc_op == prev_zuc_op) {
+                       c_ops[burst_size] = curr_c_op;
+                       sessions[burst_size] = curr_sess;
+                       burst_size++;
                        /*
                         * When there are enough ops to process in a batch,
                         * process them, and start a new batch.
                         */
                        if (burst_size == ZUC_MAX_BURST) {
-                               processed_ops = process_ops(c_ops, prev_sess,
-                                               qp, burst_size, &enqueued_ops);
+                               processed_ops = process_ops(c_ops, curr_zuc_op,
+                                               sessions, qp, burst_size,
+                                               &enqueued_ops);
                                if (processed_ops < burst_size) {
                                        burst_size = 0;
                                        break;
                                }
 
                                burst_size = 0;
-                               prev_sess = NULL;
                        }
                } else {
                        /*
-                        * Different session, process the ops
-                        * of the previous session.
+                        * Different operation type, process the ops
+                        * of the previous type.
                         */
-                       processed_ops = process_ops(c_ops, prev_sess,
-                                       qp, burst_size, &enqueued_ops);
+                       processed_ops = process_ops(c_ops, prev_zuc_op,
+                                       sessions, qp, burst_size,
+                                       &enqueued_ops);
                        if (processed_ops < burst_size) {
                                burst_size = 0;
                                break;
                        }
 
                        burst_size = 0;
-                       prev_sess = curr_sess;
+                       prev_zuc_op = curr_zuc_op;
 
-                       c_ops[burst_size++] = curr_c_op;
+                       c_ops[0] = curr_c_op;
+                       sessions[0] = curr_sess;
+                       burst_size++;
                }
        }
 
        if (burst_size != 0) {
-               /* Process the crypto ops of the last session. */
-               processed_ops = process_ops(c_ops, prev_sess,
-                               qp, burst_size, &enqueued_ops);
+               /* Process the crypto ops of the last operation type. */
+               processed_ops = process_ops(c_ops, prev_zuc_op,
+                               sessions, qp, burst_size,
+                               &enqueued_ops);
        }
 
        qp->qp_stats.enqueue_err_count += nb_ops - enqueued_ops;