1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2015-2018 Intel Corporation
8 #include <rte_cryptodev_pmd.h>
9 #include <rte_hexdump.h>
11 #include <openssl/evp.h>
13 #include "qat_common.h"
14 #include "qat_sym_session.h"
15 #include "qat_sym_pmd.h"
18 /* bpi is only used for partial blocks of DES and AES
19 * so AES block len can be assumed as max len for iv, src and dst
21 #define BPI_MAX_ENCR_IV_LEN ICP_QAT_HW_AES_BLK_SZ
23 struct qat_sym_session;
25 struct qat_sym_op_cookie {
26 struct qat_sgl qat_sgl_src;
27 struct qat_sgl qat_sgl_dst;
28 phys_addr_t qat_sgl_src_phys_addr;
29 phys_addr_t qat_sgl_dst_phys_addr;
33 qat_sym_build_request(void *in_op, uint8_t *out_msg,
34 void *op_cookie, enum qat_device_gen qat_dev_gen);
37 /** Encrypt a single partial block
38 * Depends on openssl libcrypto
39 * Uses ECB+XOR to do CFB encryption, same result, more performant
42 bpi_cipher_encrypt(uint8_t *src, uint8_t *dst,
43 uint8_t *iv, int ivlen, int srclen,
46 EVP_CIPHER_CTX *ctx = (EVP_CIPHER_CTX *)bpi_ctx;
48 uint8_t encrypted_iv[BPI_MAX_ENCR_IV_LEN];
49 uint8_t *encr = encrypted_iv;
51 /* ECB method: encrypt the IV, then XOR this with plaintext */
52 if (EVP_EncryptUpdate(ctx, encrypted_iv, &encrypted_ivlen, iv, ivlen)
54 goto cipher_encrypt_err;
56 for (; srclen != 0; --srclen, ++dst, ++src, ++encr)
62 PMD_DRV_LOG(ERR, "libcrypto ECB cipher encrypt failed");
66 static inline uint32_t
67 qat_bpicipher_postprocess(struct qat_sym_session *ctx,
68 struct rte_crypto_op *op)
70 int block_len = qat_cipher_get_block_size(ctx->qat_cipher_alg);
71 struct rte_crypto_sym_op *sym_op = op->sym;
72 uint8_t last_block_len = block_len > 0 ?
73 sym_op->cipher.data.length % block_len : 0;
75 if (last_block_len > 0 &&
76 ctx->qat_dir == ICP_QAT_HW_CIPHER_ENCRYPT) {
78 /* Encrypt last block */
79 uint8_t *last_block, *dst, *iv;
80 uint32_t last_block_offset;
82 last_block_offset = sym_op->cipher.data.offset +
83 sym_op->cipher.data.length - last_block_len;
84 last_block = (uint8_t *) rte_pktmbuf_mtod_offset(sym_op->m_src,
85 uint8_t *, last_block_offset);
87 if (unlikely(sym_op->m_dst != NULL))
88 /* out-of-place operation (OOP) */
89 dst = (uint8_t *) rte_pktmbuf_mtod_offset(sym_op->m_dst,
90 uint8_t *, last_block_offset);
94 if (last_block_len < sym_op->cipher.data.length)
95 /* use previous block ciphertext as IV */
98 /* runt block, i.e. less than one full block */
99 iv = rte_crypto_op_ctod_offset(op, uint8_t *,
100 ctx->cipher_iv.offset);
102 #ifdef RTE_LIBRTE_PMD_QAT_DEBUG_RX
103 rte_hexdump(stdout, "BPI: src before post-process:", last_block,
105 if (sym_op->m_dst != NULL)
106 rte_hexdump(stdout, "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 #ifdef RTE_LIBRTE_PMD_QAT_DEBUG_RX
112 rte_hexdump(stdout, "BPI: src after post-process:", last_block,
114 if (sym_op->m_dst != NULL)
115 rte_hexdump(stdout, "BPI: dst after post-process:", dst,
119 return sym_op->cipher.data.length - last_block_len;
123 qat_sym_process_response(void **op, uint8_t *resp)
126 struct icp_qat_fw_comn_resp *resp_msg =
127 (struct icp_qat_fw_comn_resp *)resp;
128 struct rte_crypto_op *rx_op = (struct rte_crypto_op *)(uintptr_t)
129 (resp_msg->opaque_data);
131 #ifdef RTE_LIBRTE_PMD_QAT_DEBUG_RX
132 rte_hexdump(stdout, "qat_response:", (uint8_t *)resp_msg,
133 sizeof(struct icp_qat_fw_comn_resp));
136 if (ICP_QAT_FW_COMN_STATUS_FLAG_OK !=
137 ICP_QAT_FW_COMN_RESP_CRYPTO_STAT_GET(
138 resp_msg->comn_hdr.comn_status)) {
140 rx_op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
142 struct qat_sym_session *sess = (struct qat_sym_session *)
143 get_session_private_data(
145 cryptodev_qat_driver_id);
149 qat_bpicipher_postprocess(sess, rx_op);
150 rx_op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
154 #endif /* _QAT_SYM_H_ */