--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2015-2018 Intel Corporation
+ */
+
+#ifndef _QAT_SYM_H_
+#define _QAT_SYM_H_
+
+#include <rte_cryptodev_pmd.h>
+
+#ifdef BUILD_QAT_SYM
+#include <openssl/evp.h>
+
+#include "qat_common.h"
+#include "qat_sym_session.h"
+#include "qat_sym_pmd.h"
+#include "qat_logs.h"
+
+#define BYTE_LENGTH 8
+/* bpi is only used for partial blocks of DES and AES
+ * so AES block len can be assumed as max len for iv, src and dst
+ */
+#define BPI_MAX_ENCR_IV_LEN ICP_QAT_HW_AES_BLK_SZ
+
+/*
+ * Maximum number of SGL entries
+ */
+#define QAT_SYM_SGL_MAX_NUMBER 16
+
+struct qat_sym_session;
+
+struct qat_sym_sgl {
+ qat_sgl_hdr;
+ struct qat_flat_buf buffers[QAT_SYM_SGL_MAX_NUMBER];
+} __rte_packed __rte_cache_aligned;
+
+struct qat_sym_op_cookie {
+ struct qat_sym_sgl qat_sgl_src;
+ struct qat_sym_sgl qat_sgl_dst;
+ phys_addr_t qat_sgl_src_phys_addr;
+ phys_addr_t qat_sgl_dst_phys_addr;
+};
+
+int
+qat_sym_build_request(void *in_op, uint8_t *out_msg,
+ void *op_cookie, enum qat_device_gen qat_dev_gen);
+
+
+/** Encrypt a single partial block
+ * Depends on openssl libcrypto
+ * Uses ECB+XOR to do CFB encryption, same result, more performant
+ */
+static inline int
+bpi_cipher_encrypt(uint8_t *src, uint8_t *dst,
+ uint8_t *iv, int ivlen, int srclen,
+ void *bpi_ctx)
+{
+ EVP_CIPHER_CTX *ctx = (EVP_CIPHER_CTX *)bpi_ctx;
+ int encrypted_ivlen;
+ uint8_t encrypted_iv[BPI_MAX_ENCR_IV_LEN];
+ uint8_t *encr = encrypted_iv;
+
+ /* ECB method: encrypt the IV, then XOR this with plaintext */
+ if (EVP_EncryptUpdate(ctx, encrypted_iv, &encrypted_ivlen, iv, ivlen)
+ <= 0)
+ goto cipher_encrypt_err;
+
+ for (; srclen != 0; --srclen, ++dst, ++src, ++encr)
+ *dst = *src ^ *encr;
+
+ return 0;
+
+cipher_encrypt_err:
+ QAT_DP_LOG(ERR, "libcrypto ECB cipher encrypt failed");
+ return -EINVAL;
+}
+
+static inline uint32_t
+qat_bpicipher_postprocess(struct qat_sym_session *ctx,
+ struct rte_crypto_op *op)
+{
+ int block_len = qat_cipher_get_block_size(ctx->qat_cipher_alg);
+ struct rte_crypto_sym_op *sym_op = op->sym;
+ uint8_t last_block_len = block_len > 0 ?
+ sym_op->cipher.data.length % block_len : 0;
+
+ if (last_block_len > 0 &&
+ ctx->qat_dir == ICP_QAT_HW_CIPHER_ENCRYPT) {
+
+ /* Encrypt last block */
+ uint8_t *last_block, *dst, *iv;
+ uint32_t last_block_offset;
+
+ last_block_offset = sym_op->cipher.data.offset +
+ sym_op->cipher.data.length - last_block_len;
+ last_block = (uint8_t *) rte_pktmbuf_mtod_offset(sym_op->m_src,
+ uint8_t *, last_block_offset);
+
+ if (unlikely(sym_op->m_dst != NULL))
+ /* out-of-place operation (OOP) */
+ dst = (uint8_t *) rte_pktmbuf_mtod_offset(sym_op->m_dst,
+ uint8_t *, last_block_offset);
+ else
+ dst = last_block;
+
+ if (last_block_len < sym_op->cipher.data.length)
+ /* use previous block ciphertext as IV */
+ iv = dst - block_len;
+ else
+ /* runt block, i.e. less than one full block */
+ iv = rte_crypto_op_ctod_offset(op, uint8_t *,
+ ctx->cipher_iv.offset);
+
+#if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
+ QAT_DP_HEXDUMP_LOG(DEBUG, "BPI: src before post-process:",
+ last_block, last_block_len);
+ if (sym_op->m_dst != NULL)
+ QAT_DP_HEXDUMP_LOG(DEBUG,
+ "BPI: dst before post-process:",
+ dst, last_block_len);
+#endif
+ bpi_cipher_encrypt(last_block, dst, iv, block_len,
+ last_block_len, ctx->bpi_ctx);
+#if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
+ QAT_DP_HEXDUMP_LOG(DEBUG, "BPI: src after post-process:",
+ last_block, last_block_len);
+ if (sym_op->m_dst != NULL)
+ QAT_DP_HEXDUMP_LOG(DEBUG,
+ "BPI: dst after post-process:",
+ dst, last_block_len);
+#endif
+ }
+ return sym_op->cipher.data.length - last_block_len;
+}
+
+static inline void
+qat_sym_process_response(void **op, uint8_t *resp)
+{
+
+ struct icp_qat_fw_comn_resp *resp_msg =
+ (struct icp_qat_fw_comn_resp *)resp;
+ struct rte_crypto_op *rx_op = (struct rte_crypto_op *)(uintptr_t)
+ (resp_msg->opaque_data);
+
+#if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
+ QAT_DP_HEXDUMP_LOG(DEBUG, "qat_response:", (uint8_t *)resp_msg,
+ sizeof(struct icp_qat_fw_comn_resp));
+#endif
+
+ if (ICP_QAT_FW_COMN_STATUS_FLAG_OK !=
+ ICP_QAT_FW_COMN_RESP_CRYPTO_STAT_GET(
+ resp_msg->comn_hdr.comn_status)) {
+
+ rx_op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
+ } else {
+ struct qat_sym_session *sess = (struct qat_sym_session *)
+ get_sym_session_private_data(
+ rx_op->sym->session,
+ cryptodev_qat_driver_id);
+
+
+ if (sess->bpi_ctx)
+ qat_bpicipher_postprocess(sess, rx_op);
+ rx_op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+ }
+ *op = (void *)rx_op;
+}
+#else
+
+static inline void
+qat_sym_process_response(void **op __rte_unused, uint8_t *resp __rte_unused)
+{
+}
+#endif
+#endif /* _QAT_SYM_H_ */
Code Review / deb_dpdk.git / blobdiff