1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2015-2018 Intel Corporation
8 #include <rte_cryptodev_pmd.h>
9 #include <openssl/evp.h>
11 #include "qat_common.h"
12 #include "qat_sym_session.h"
13 #include "qat_sym_pmd.h"
17 /* bpi is only used for partial blocks of DES and AES
18 * so AES block len can be assumed as max len for iv, src and dst
20 #define BPI_MAX_ENCR_IV_LEN ICP_QAT_HW_AES_BLK_SZ
22 struct qat_sym_session;
24 struct qat_sym_op_cookie {
25 struct qat_sgl qat_sgl_src;
26 struct qat_sgl qat_sgl_dst;
27 phys_addr_t qat_sgl_src_phys_addr;
28 phys_addr_t qat_sgl_dst_phys_addr;
32 qat_sym_build_request(void *in_op, uint8_t *out_msg,
33 void *op_cookie, enum qat_device_gen qat_dev_gen);
36 /** Encrypt a single partial block
37 * Depends on openssl libcrypto
38 * Uses ECB+XOR to do CFB encryption, same result, more performant
41 bpi_cipher_encrypt(uint8_t *src, uint8_t *dst,
42 uint8_t *iv, int ivlen, int srclen,
45 EVP_CIPHER_CTX *ctx = (EVP_CIPHER_CTX *)bpi_ctx;
47 uint8_t encrypted_iv[BPI_MAX_ENCR_IV_LEN];
48 uint8_t *encr = encrypted_iv;
50 /* ECB method: encrypt the IV, then XOR this with plaintext */
51 if (EVP_EncryptUpdate(ctx, encrypted_iv, &encrypted_ivlen, iv, ivlen)
53 goto cipher_encrypt_err;
55 for (; srclen != 0; --srclen, ++dst, ++src, ++encr)
61 QAT_DP_LOG(ERR, "libcrypto ECB cipher encrypt failed");
65 static inline uint32_t
66 qat_bpicipher_postprocess(struct qat_sym_session *ctx,
67 struct rte_crypto_op *op)
69 int block_len = qat_cipher_get_block_size(ctx->qat_cipher_alg);
70 struct rte_crypto_sym_op *sym_op = op->sym;
71 uint8_t last_block_len = block_len > 0 ?
72 sym_op->cipher.data.length % block_len : 0;
74 if (last_block_len > 0 &&
75 ctx->qat_dir == ICP_QAT_HW_CIPHER_ENCRYPT) {
77 /* Encrypt last block */
78 uint8_t *last_block, *dst, *iv;
79 uint32_t last_block_offset;
81 last_block_offset = sym_op->cipher.data.offset +
82 sym_op->cipher.data.length - last_block_len;
83 last_block = (uint8_t *) rte_pktmbuf_mtod_offset(sym_op->m_src,
84 uint8_t *, last_block_offset);
86 if (unlikely(sym_op->m_dst != NULL))
87 /* out-of-place operation (OOP) */
88 dst = (uint8_t *) rte_pktmbuf_mtod_offset(sym_op->m_dst,
89 uint8_t *, last_block_offset);
93 if (last_block_len < sym_op->cipher.data.length)
94 /* use previous block ciphertext as IV */
97 /* runt block, i.e. less than one full block */
98 iv = rte_crypto_op_ctod_offset(op, uint8_t *,
99 ctx->cipher_iv.offset);
101 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
102 QAT_DP_HEXDUMP_LOG(DEBUG, "BPI: src before post-process:",
103 last_block, last_block_len);
104 if (sym_op->m_dst != NULL)
105 QAT_DP_HEXDUMP_LOG(DEBUG,
106 "BPI: dst before post-process:",
107 dst, last_block_len);
109 bpi_cipher_encrypt(last_block, dst, iv, block_len,
110 last_block_len, ctx->bpi_ctx);
111 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
112 QAT_DP_HEXDUMP_LOG(DEBUG, "BPI: src after post-process:",
113 last_block, last_block_len);
114 if (sym_op->m_dst != NULL)
115 QAT_DP_HEXDUMP_LOG(DEBUG,
116 "BPI: dst after post-process:",
117 dst, last_block_len);
120 return sym_op->cipher.data.length - last_block_len;
124 qat_sym_process_response(void **op, uint8_t *resp)
127 struct icp_qat_fw_comn_resp *resp_msg =
128 (struct icp_qat_fw_comn_resp *)resp;
129 struct rte_crypto_op *rx_op = (struct rte_crypto_op *)(uintptr_t)
130 (resp_msg->opaque_data);
132 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
133 QAT_DP_HEXDUMP_LOG(DEBUG, "qat_response:", (uint8_t *)resp_msg,
134 sizeof(struct icp_qat_fw_comn_resp));
137 if (ICP_QAT_FW_COMN_STATUS_FLAG_OK !=
138 ICP_QAT_FW_COMN_RESP_CRYPTO_STAT_GET(
139 resp_msg->comn_hdr.comn_status)) {
141 rx_op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
143 struct qat_sym_session *sess = (struct qat_sym_session *)
144 get_session_private_data(
146 cryptodev_qat_driver_id);
150 qat_bpicipher_postprocess(sess, rx_op);
151 rx_op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
156 #endif /* _QAT_SYM_H_ */