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e_dpdkcpt_cpoly.c
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e_dpdkcpt_cpoly.c
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/* SPDX-License-Identifier: Marvell-MIT
* Copyright (c) 2024 Marvell.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <sched.h>
#include <sys/types.h>
#include <stdint.h>
#include <openssl/rsa.h>
#include <openssl/engine.h>
#include <openssl/evp.h>
#include <openssl/async.h>
#include <openssl/modes.h>
#include <openssl/aes.h>
#include <openssl/crypto.h>
#include <crypto/poly1305.h>
#include <crypto/chacha.h>
#if OPENSSL_API_LEVEL >= 30000
#include <openssl/evp.h>
#else
#include <evp_local.h>
#endif
#include <rte_eal.h>
#include <rte_errno.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_cryptodev.h>
#include "e_dpdkcpt.h"
#pragma GCC diagnostic ignored "-Wdiscarded-qualifiers"
#define E_DPDKCPT_CPOLY_KEY_LEN 32
#define E_DPDKCPT_CPOLY_BLOCK_SIZE 1
#define E_DPDKCPT_CPOLY_AEAD_AAD_LEN 12
#define E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN 16
#define SSL_MAX_PIPELINES 32
#define TLS_HDR_SIZE 13
#define NO_TLS_PAYLOAD_LENGTH ((size_t)-1)
#define POLY1305_ctx(actx) ((POLY1305 *)(actx + 1))
#define CRYPTO_OP(c) \
((c) ? RTE_CRYPTO_AEAD_OP_ENCRYPT : RTE_CRYPTO_AEAD_OP_DECRYPT)
#define CPOLY_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
| EVP_CIPH_FLAG_CUSTOM_CIPHER \
| EVP_CIPH_ALWAYS_CALL_INIT \
| EVP_CIPH_CTRL_INIT \
| EVP_CIPH_CUSTOM_COPY \
| EVP_CIPH_FLAG_AEAD_CIPHER \
| EVP_CIPH_FLAG_PIPELINE)
EVP_CIPHER *dpdkcpt_chacha20_poly1305;
static const unsigned char zero[2*CHACHA_BLK_SIZE] = { 0 };
typedef struct {
union {
double align; /* this ensures even sizeof(EVP_CHACHA_KEY)%8==0 */
unsigned int d[CHACHA_KEY_SIZE / 4];
} key;
unsigned int counter[CHACHA_CTR_SIZE / 4];
unsigned char buf[CHACHA_BLK_SIZE];
unsigned int partial_len;
} EVP_CHACHA_KEY;
typedef struct {
EVP_CHACHA_KEY key;
unsigned int nonce[12/4];
unsigned char tag[POLY1305_BLOCK_SIZE];
unsigned char tls_aad[POLY1305_BLOCK_SIZE];
struct { uint64_t aad, text; } len;
int aad, mac_inited, tag_len, nonce_len;
size_t tls_payload_length;
} EVP_CHACHA_AEAD_CTX;
struct ossl_dpdk_cpoly_ctx {
EVP_CHACHA_AEAD_CTX *actx;
uint8_t key[32];
int key_len;
uint8_t iv[12];
int iv_len;
uint8_t auth_tag[16];
int auth_taglen;
uint8_t aad[16];
int aad_len;
/* Below two members for tls1_2 */
uint8_t seq_num[SSL_MAX_PIPELINES][8];
int tls_aad_len;
uint8_t dev_id;
struct rte_crypto_sym_xform aead_xform;
struct rte_cryptodev_sym_session *cry_session;
struct rte_crypto_op *op;
struct rte_mbuf *ibuf;
struct rte_mbuf *obuf;
/* Below members are for pipeline */
int numpipes;
uint8_t **input_buf;
uint8_t **output_buf;
size_t *input_len;
struct rte_crypto_op *ops[SSL_MAX_PIPELINES];
struct rte_mbuf *ibufs[SSL_MAX_PIPELINES];
uint32_t aad_cnt;
char aad_pipe[SSL_MAX_PIPELINES][TLS_HDR_SIZE];
int hw_offload_pkt_sz_threshold;
};
const EVP_CIPHER *EVP_dpdkcpt_chacha20_poly1305(void);
static int dpdkcpt_chacha20_poly1305_init_key(EVP_CIPHER_CTX *ctx,
const unsigned char *ch, const unsigned char *uch, int val);
static int dpdkcpt_chacha20_poly1305_cleanup(EVP_CIPHER_CTX *ctx);
static int dpdkcpt_chacha20_poly1305_cipher(EVP_CIPHER_CTX *ctx, unsigned char *ch,
const unsigned char *ch1, size_t ln);
static int dpdkcpt_chacha20_poly1305_ctrl(EVP_CIPHER_CTX *c, int type,
int arg, void *ptr);
static int create_crypto_operation_pl(struct ossl_dpdk_cpoly_ctx *dpdk_ctx,
const uint8_t *in, int len, int enc, uint8_t pipe_index);
static int dpdkcpt_chacha20_poly1305_crypto(EVP_CIPHER_CTX *ctx,
unsigned char *out, const unsigned char *in, size_t len);
static int dpdkcpt_chacha20_poly1305_tls_cipher(EVP_CIPHER_CTX *ctx,
unsigned char *out, const unsigned char *in, size_t len);
static int create_crypto_operation(EVP_CIPHER_CTX *ctx,
const uint8_t *in, int len, int enc);
extern int sym_dev_id[];
extern int sym_queues[];
extern uint16_t hw_offload_pktsz_thresh;
extern int cpt_num_requests_in_flight;
extern int cpt_num_cipher_pipeline_requests_in_flight;
static int chacha_init_key(EVP_CIPHER_CTX *ctx,
const unsigned char user_key[CHACHA_KEY_SIZE],
const unsigned char iv[CHACHA_CTR_SIZE], int enc)
{
struct ossl_dpdk_cpoly_ctx *dpdk_ctx =
(struct ossl_dpdk_cpoly_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
EVP_CHACHA_AEAD_CTX *actx = dpdk_ctx->actx;
EVP_CHACHA_KEY *key = (EVP_CHACHA_KEY*)&actx->key;
unsigned int i;
if (user_key)
for (i = 0; i < CHACHA_KEY_SIZE; i+=4) {
key->key.d[i/4] = CHACHA_U8TOU32(user_key+i);
}
if (iv)
for (i = 0; i < CHACHA_CTR_SIZE; i+=4) {
key->counter[i/4] = CHACHA_U8TOU32(iv+i);
}
key->partial_len = 0;
return 1;
}
/*
* Create AEAD Session
*/
static int create_cpoly_aead_session(struct ossl_dpdk_cpoly_ctx *dpdk_ctx, int enc,
int aad_len, uint8_t reconfigure)
{
int retval;
if (reconfigure) {
#if RTE_VERSION >= RTE_VERSION_NUM(22, 11, 0, 99)
retval = rte_cryptodev_sym_session_free(dpdk_ctx->dev_id,
(struct rte_cryptodev_sym_session *)
dpdk_ctx->cry_session);
#else
retval = rte_cryptodev_sym_session_clear(
dpdk_ctx->dev_id,
(struct rte_cryptodev_sym_session *)dpdk_ctx->cry_session);
#endif
if (retval < 0)
engine_log(ENG_LOG_ERR, "FAILED to free session\n");
}
struct rte_crypto_sym_xform aead_xform = {
.next = NULL,
.type = RTE_CRYPTO_SYM_XFORM_AEAD,
.aead = {
.op = enc ? RTE_CRYPTO_AEAD_OP_ENCRYPT :
RTE_CRYPTO_AEAD_OP_DECRYPT,
.algo = RTE_CRYPTO_AEAD_CHACHA20_POLY1305,
.key = {.length = E_DPDKCPT_CPOLY_KEY_LEN},
.iv = { .offset = E_DPDKCPT_IV_OFFSET,
.length = E_DPDKCPT_CPOLY_IV_LEN},
.digest_length = E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN,
.aad_length = aad_len
},
};
aead_xform.aead.key.data = dpdk_ctx->key;
aead_xform.aead.key.length = dpdk_ctx->key_len;
#if RTE_VERSION >= RTE_VERSION_NUM(22, 11, 0, 99)
dpdk_ctx->cry_session =
(void *)rte_cryptodev_sym_session_create(dpdk_ctx->dev_id,
&aead_xform,
sym_session_pool);
if (dpdk_ctx->cry_session == NULL) {
engine_log (ENG_LOG_ERR, "Session could not be created: %d\n", __LINE__);
return 0;
}
#else
if (!reconfigure) {
dpdk_ctx->cry_session =
(void *)rte_cryptodev_sym_session_create(sym_session_pool);
if (dpdk_ctx->cry_session == NULL) {
engine_log (ENG_LOG_ERR, "Session could not be created: %d\n",
__LINE__);
return 0;
}
}
if (rte_cryptodev_sym_session_init(dpdk_ctx->dev_id,
(struct rte_cryptodev_sym_session *)
dpdk_ctx->cry_session,
&aead_xform, sym_session_priv_pool) < 0) {
engine_log(ENG_LOG_ERR, "Session initialization failed\n");
return 0;
}
#endif
return 1;
}
static int dpdkcpt_chacha20_poly1305_init_key(EVP_CIPHER_CTX *ctx,
const unsigned char *key, const unsigned char *iv, int enc)
{
if (iv == NULL && key == NULL)
return 1;
struct ossl_dpdk_cpoly_ctx *dpdk_ctx =
(struct ossl_dpdk_cpoly_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
unsigned int lcore = rte_lcore_id();
dpdk_ctx->actx->len.aad = 0;
dpdk_ctx->actx->len.text = 0;
dpdk_ctx->actx->aad = 0;
dpdk_ctx->actx->mac_inited = 0;
dpdk_ctx->actx->tls_payload_length = NO_TLS_PAYLOAD_LENGTH;
if (lcore == LCORE_ID_ANY || sym_dev_id[lcore] == -1) {
engine_log(ENG_LOG_ERR, "%s: Queues not available for lcore %d\n",
__FUNCTION__, lcore);
return 0;
}
dpdk_ctx->dev_id = sym_dev_id[lcore];
if (key != NULL) {
dpdk_ctx->key_len = E_DPDKCPT_CPOLY_KEY_LEN;
memcpy(dpdk_ctx->key, key, E_DPDKCPT_CPOLY_KEY_LEN);
dpdk_ctx->auth_taglen = E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN;
dpdk_ctx->aad_len = EVP_AEAD_TLS1_AAD_LEN;
dpdk_ctx->numpipes = 0;
int retval = create_cpoly_aead_session(
dpdk_ctx, enc, dpdk_ctx->aad_len, 0);
if (retval < 0) {
engine_log(ENG_LOG_ERR, "AEAD Sesion creation failed.\n");
return 0;
}
}
if (iv != NULL) {
memcpy (dpdk_ctx->iv, iv, E_DPDKCPT_CPOLY_IV_LEN);
unsigned char temp[CHACHA_CTR_SIZE] = { 0 };
/* pad on the left */
if (dpdk_ctx->actx->nonce_len <= CHACHA_CTR_SIZE)
memcpy(temp + CHACHA_CTR_SIZE - dpdk_ctx->actx->nonce_len, iv,
dpdk_ctx->actx->nonce_len);
chacha_init_key(ctx, key, temp, enc);
dpdk_ctx->actx->nonce[0] = dpdk_ctx->actx->key.counter[1];
dpdk_ctx->actx->nonce[1] = dpdk_ctx->actx->key.counter[2];
dpdk_ctx->actx->nonce[2] = dpdk_ctx->actx->key.counter[3];
} else {
chacha_init_key(ctx, key, NULL, enc);
}
return 1;
}
static int dpdkcpt_chacha20_poly1305_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
{
int i;
struct ossl_dpdk_cpoly_ctx *dpdk_ctx = EVP_CIPHER_CTX_get_cipher_data(c);
int enc = EVP_CIPHER_CTX_encrypting(c);
int ret = 0;
switch (type) {
case EVP_CTRL_INIT:
memset(dpdk_ctx, 0, sizeof(struct ossl_dpdk_cpoly_ctx));
dpdk_ctx->iv_len = EVP_CIPHER_CTX_iv_length(c);
memcpy(dpdk_ctx->iv, EVP_CIPHER_CTX_iv_noconst(c), dpdk_ctx->iv_len);
dpdk_ctx->auth_taglen = -1;
dpdk_ctx->aad_len = -1;
dpdk_ctx->tls_aad_len = -1;
dpdk_ctx->hw_offload_pkt_sz_threshold = hw_offload_pktsz_thresh;
if (dpdk_ctx->actx == NULL)
dpdk_ctx->actx =
OPENSSL_zalloc(sizeof(EVP_CHACHA_AEAD_CTX) +
Poly1305_ctx_size());
if (dpdk_ctx->actx == NULL) {
engine_log(ENG_LOG_ERR, "EVP_F_CHACHA20_POLY1305_CTRL, "
"EVP_R_INITIALIZATION_ERROR \n");
return 0;
}
dpdk_ctx->actx->len.aad = 0;
dpdk_ctx->actx->len.text = 0;
dpdk_ctx->actx->aad = 0;
dpdk_ctx->actx->mac_inited = 0;
dpdk_ctx->actx->tag_len = 0;
dpdk_ctx->actx->nonce_len = 12;
dpdk_ctx->actx->tls_payload_length = NO_TLS_PAYLOAD_LENGTH;
memset(dpdk_ctx->actx->tls_aad, 0, POLY1305_BLOCK_SIZE);
return 1;
case EVP_CTRL_AEAD_SET_IVLEN:
if (arg <= 0)
return 0;
if ((arg > EVP_MAX_IV_LENGTH) && (arg > dpdk_ctx->iv_len)) {
if (dpdk_ctx->iv == NULL) {
engine_log(ENG_LOG_INFO, "dpdk_ctx->iv is null\n");
return 0;
}
}
dpdk_ctx->iv_len = arg;
dpdk_ctx->actx->nonce_len = arg;
return 1;
case EVP_CTRL_AEAD_SET_IV_FIXED:
if (arg != 12)
return 0;
dpdk_ctx->actx->nonce[0] = dpdk_ctx->actx->key.counter[1]
= CHACHA_U8TOU32((unsigned char *)ptr);
dpdk_ctx->actx->nonce[1] = dpdk_ctx->actx->key.counter[2]
= CHACHA_U8TOU32((unsigned char *)ptr+4);
dpdk_ctx->actx->nonce[2] =dpdk_ctx->actx->key.counter[3]
= CHACHA_U8TOU32((unsigned char *)ptr+8);
return 1;
case EVP_CTRL_AEAD_SET_TAG:
if (arg <= 0 || arg > 16 || EVP_CIPHER_CTX_encrypting(c) || ptr == NULL)
return 0;
memcpy(dpdk_ctx->auth_tag, ptr, arg);
memcpy(dpdk_ctx->actx->tag, ptr, arg);
dpdk_ctx->auth_taglen = arg;
dpdk_ctx->actx->tag_len = arg;
return 1;
case EVP_CTRL_AEAD_GET_TAG:
if (arg <= 0 || arg > 16 || !EVP_CIPHER_CTX_encrypting(c) ||
((dpdk_ctx->auth_taglen < 0) && (dpdk_ctx->actx->tag_len < 0)))
return 0;
memcpy(ptr, dpdk_ctx->auth_tag, arg);
return 1;
case EVP_CTRL_AEAD_TLS1_AAD:
/* Save AAD for later use */
if (arg != EVP_AEAD_TLS1_AAD_LEN)
return 0;
unsigned char *aad = ptr;
memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
memcpy(dpdk_ctx->actx->tls_aad, ptr, EVP_AEAD_TLS1_AAD_LEN);
aad = dpdk_ctx->actx->tls_aad;
/* Save sequence number for IV update */
for (i = 0; i < 8; i++) {
dpdk_ctx->seq_num[dpdk_ctx->aad_cnt][i] =
((uint8_t *)ptr)[i];
}
dpdk_ctx->tls_aad_len = arg;
unsigned int len = EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8 |
EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
if (!EVP_CIPHER_CTX_encrypting(c)) {
if (len < E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN)
return -1;
len -= E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN;
EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = (len >> 8) & 0xFF;
EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xFF;
aad[arg - 2] = (len >> 8) & 0xFF;
aad[arg - 1] = len & 0xFF;
}
dpdk_ctx->actx->tls_payload_length = len;
if (dpdk_ctx->aad_cnt < SSL_MAX_PIPELINES) {
memcpy(dpdk_ctx->aad_pipe[dpdk_ctx->aad_cnt],
EVP_CIPHER_CTX_buf_noconst(c), arg);
dpdk_ctx->aad_cnt++;
}
/*
* record sequence number is XORed with the IV as per RFC7905.
*/
dpdk_ctx->actx->key.counter[1] = dpdk_ctx->actx->nonce[0];
dpdk_ctx->actx->key.counter[2] =
dpdk_ctx->actx->nonce[1] ^ CHACHA_U8TOU32(aad);
dpdk_ctx->actx->key.counter[3] =
dpdk_ctx->actx->nonce[2] ^ CHACHA_U8TOU32(aad+4);
dpdk_ctx->actx->mac_inited = 0;
return E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN;
case EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS:
dpdk_ctx->numpipes = arg;
dpdk_ctx->output_buf = ptr;
return 1;
case EVP_CTRL_SET_PIPELINE_INPUT_BUFS:
dpdk_ctx->numpipes = arg;
dpdk_ctx->input_buf = ptr;
return 1;
case EVP_CTRL_SET_PIPELINE_INPUT_LENS:
dpdk_ctx->numpipes = arg;
dpdk_ctx->input_len = ptr;
return 1;
default:
engine_log(ENG_LOG_INFO, "Default value = %d\n", type);
return -1;
}
}
static int create_crypto_operation(
EVP_CIPHER_CTX *ctx, const uint8_t *in, int len, int enc)
{
unsigned int aad_pad_len = 16, plaintext_pad_len = 0;
uint8_t *plaintext, *ciphertext, i, updated_iv[12];
struct ossl_dpdk_cpoly_ctx *dpdk_ctx = EVP_CIPHER_CTX_get_cipher_data(ctx);
/* Generate crypto op data structure */
dpdk_ctx->op = rte_crypto_op_alloc(crypto_sym_op_pool,
RTE_CRYPTO_OP_TYPE_SYMMETRIC);
if (dpdk_ctx->op == NULL) {
engine_log(ENG_LOG_ERR, "Failed to create crypto_op : %d\n", __LINE__);
return -1;
}
struct rte_crypto_sym_op *sym_op = dpdk_ctx->op->sym;
sym_op->aead.aad.data = (uint8_t *)rte_pktmbuf_append(dpdk_ctx->ibuf,
aad_pad_len);
sym_op->aead.aad.phys_addr = rte_pktmbuf_iova(dpdk_ctx->ibuf);
if (dpdk_ctx->tls_aad_len > 0) {
memcpy(sym_op->aead.aad.data, EVP_CIPHER_CTX_buf_noconst(ctx),
dpdk_ctx->tls_aad_len);
} else {
memcpy(sym_op->aead.aad.data, dpdk_ctx->aad, dpdk_ctx->aad_len);
}
/* Append IV at the end of the crypto operation */
uint8_t *iv_ptr = rte_crypto_op_ctod_offset(dpdk_ctx->op, uint8_t *,
E_DPDKCPT_IV_OFFSET);
if (iv_ptr == NULL)
engine_log(ENG_LOG_ERR, "IV_PTR is null: %d\n", __LINE__);
/* XORing iv with sequence no: is not needed in TLS1.3 since it is
* already being done inside openssl */
rte_memcpy(iv_ptr, dpdk_ctx->iv, dpdk_ctx->iv_len);
if (CRYPTO_OP(enc) == RTE_CRYPTO_AEAD_OP_ENCRYPT) {
plaintext_pad_len = RTE_ALIGN_CEIL(len, 16);
plaintext = (uint8_t *)rte_pktmbuf_append(dpdk_ctx->ibuf,
plaintext_pad_len);
memcpy(plaintext, in, len);
/* Append digest data* */
if (dpdk_ctx->tls_aad_len >= 0) {
sym_op->aead.digest.data = (uint8_t *)rte_pktmbuf_append(
dpdk_ctx->ibuf, E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN);
memset(sym_op->aead.digest.data, 0, E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN);
sym_op->aead.digest.phys_addr = rte_pktmbuf_iova_offset(dpdk_ctx->ibuf,
plaintext_pad_len + aad_pad_len);
} else {
sym_op->aead.digest.data = (uint8_t *)rte_pktmbuf_append(
dpdk_ctx->ibuf, dpdk_ctx->auth_taglen);
memset(sym_op->aead.digest.data, 0, dpdk_ctx->auth_taglen);
sym_op->aead.digest.phys_addr = rte_pktmbuf_iova_offset(dpdk_ctx->ibuf,
plaintext_pad_len + aad_pad_len);
}
} else {
plaintext_pad_len = RTE_ALIGN_CEIL(len, 16);
ciphertext = (uint8_t *)rte_pktmbuf_append(dpdk_ctx->ibuf,
plaintext_pad_len);
memcpy(ciphertext, in, len);
/* Append digest data* */
if (dpdk_ctx->tls_aad_len >= 0) {
sym_op->aead.digest.data = (uint8_t *)rte_pktmbuf_append(
dpdk_ctx->ibuf, E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN);
sym_op->aead.digest.phys_addr = rte_pktmbuf_iova_offset(dpdk_ctx->ibuf,
plaintext_pad_len + aad_pad_len);
rte_memcpy(sym_op->aead.digest.data, in+len,
E_DPDKCPT_CPOLY_AEAD_DIGEST_LEN);
} else {
sym_op->aead.digest.data = (uint8_t *)rte_pktmbuf_append(
dpdk_ctx->ibuf, dpdk_ctx->auth_taglen);
sym_op->aead.digest.phys_addr = rte_pktmbuf_iova_offset(dpdk_ctx->ibuf,
plaintext_pad_len + aad_pad_len);
rte_memcpy(sym_op->aead.digest.data, dpdk_ctx->auth_tag,
dpdk_ctx->auth_taglen);
}
}
sym_op->aead.data.length = len;
sym_op->aead.data.offset = aad_pad_len;
return 0;
}
static int create_crypto_operation_pl(struct ossl_dpdk_cpoly_ctx *dpdk_ctx,
const uint8_t *in, int len, int enc, uint8_t pipe_index)
{
unsigned int aad_pad_len = 0, plaintext_pad_len = 0;
uint8_t updated_iv[12];
dpdk_ctx->ops[pipe_index] = rte_crypto_op_alloc(crypto_sym_op_pool,
RTE_CRYPTO_OP_TYPE_SYMMETRIC);
if (unlikely(dpdk_ctx->ops[pipe_index] == NULL)) {
engine_log(ENG_LOG_ERR, "Failed to create crypto_ops for pipe: %d\n",
pipe_index);
return -1;
}
struct rte_crypto_sym_op *sym_op = dpdk_ctx->ops[pipe_index]->sym;
if (dpdk_ctx->tls_aad_len >= 0) {
aad_pad_len = RTE_ALIGN_CEIL(dpdk_ctx->tls_aad_len, 16);
sym_op->aead.aad.data = (uint8_t *)rte_pktmbuf_append(
dpdk_ctx->ibufs[pipe_index], aad_pad_len);
sym_op->aead.aad.phys_addr = rte_pktmbuf_iova(
dpdk_ctx->ibufs[pipe_index]);
memcpy(sym_op->aead.aad.data, dpdk_ctx->aad_pipe[pipe_index],
dpdk_ctx->tls_aad_len);
}
/* Append IV at the end of the crypto operation*/
uint8_t *iv_ptr = rte_crypto_op_ctod_offset(dpdk_ctx->ops[pipe_index],
uint8_t *, E_DPDKCPT_IV_OFFSET);
if (iv_ptr == NULL)
engine_log(ENG_LOG_ERR, "IV_PTR is null\n");
if (dpdk_ctx->tls_aad_len > 0) {
memcpy(updated_iv, dpdk_ctx->iv, dpdk_ctx->iv_len);
/* Updating IV value by XORing with sequence number */
for (uint8_t i = 0; i < 8; i++)
updated_iv[i + 4] = dpdk_ctx->seq_num[pipe_index][i] ^
dpdk_ctx->iv[i + 4];
rte_memcpy(iv_ptr, updated_iv, dpdk_ctx->iv_len);
} else {
rte_memcpy(iv_ptr, dpdk_ctx->iv, dpdk_ctx->iv_len);
}
if (dpdk_ctx->tls_aad_len >= 0 || dpdk_ctx->aad_len >= 0) {
uint8_t *plaintext, *ciphertext;
/* Append plaintext/ciphertext */
if (CRYPTO_OP(enc) == RTE_CRYPTO_AEAD_OP_ENCRYPT) {
plaintext_pad_len = RTE_ALIGN_CEIL(len, 16);
plaintext = (uint8_t *)rte_pktmbuf_append(
dpdk_ctx->ibufs[pipe_index], plaintext_pad_len);
memcpy(plaintext, in, len);
/* Append digest data */
sym_op->aead.digest.data =
(uint8_t *)rte_pktmbuf_append(
dpdk_ctx->ibufs[pipe_index],
EVP_CHACHAPOLY_TLS_TAG_LEN);
memset(sym_op->aead.digest.data, 0,
EVP_CHACHAPOLY_TLS_TAG_LEN);
sym_op->aead.digest.phys_addr = rte_pktmbuf_iova_offset(
dpdk_ctx->ibufs[pipe_index],
plaintext_pad_len + aad_pad_len);
} else {
plaintext_pad_len = RTE_ALIGN_CEIL(len, 16);
ciphertext = (uint8_t *)rte_pktmbuf_append(
dpdk_ctx->ibufs[pipe_index],
plaintext_pad_len);
memcpy(ciphertext, in, len);
/* Append digest data */
sym_op->aead.digest.data =
(uint8_t *)rte_pktmbuf_append(
dpdk_ctx->ibufs[pipe_index],
EVP_CHACHAPOLY_TLS_TAG_LEN);
sym_op->aead.digest.phys_addr = rte_pktmbuf_iova_offset(
dpdk_ctx->ibufs[pipe_index],
plaintext_pad_len + aad_pad_len);
rte_memcpy(sym_op->aead.digest.data, in + len,
EVP_CHACHAPOLY_TLS_TAG_LEN);
}
sym_op->aead.data.length = len;
sym_op->aead.data.offset = aad_pad_len;
}
return 0;
}
static int chacha_cipher(EVP_CIPHER_CTX * ctx, unsigned char *out,
const unsigned char *inp, size_t len)
{
struct ossl_dpdk_cpoly_ctx *dpdk_ctx =
(struct ossl_dpdk_cpoly_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
EVP_CHACHA_KEY *key = (EVP_CHACHA_KEY*)(&dpdk_ctx->actx->key);
unsigned int n, rem, ctr32;
if ((n = key->partial_len)) {
while (len && n < CHACHA_BLK_SIZE) {
*out++ = *inp++ ^ key->buf[n++];
len--;
}
key->partial_len = n;
if (len == 0)
return 1;
if (n == CHACHA_BLK_SIZE) {
key->partial_len = 0;
key->counter[0]++;
if (key->counter[0] == 0)
key->counter[1]++;
}
}
rem = (unsigned int)(len % CHACHA_BLK_SIZE);
len -= rem;
ctr32 = key->counter[0];
while (len >= CHACHA_BLK_SIZE) {
size_t blocks = len / CHACHA_BLK_SIZE;
/*
* 1<<28 is just a not-so-small yet not-so-large number...
* Below condition is practically never met, but it has to
* be checked for code correctness.
*/
if (sizeof(size_t)>sizeof(unsigned int) && blocks>(1U<<28))
blocks = (1U<<28);
/*
* As ChaCha20_ctr32 operates on 32-bit counter, caller
* has to handle overflow. 'if' below detects the
* overflow, which is then handled by limiting the
* amount of blocks to the exact overflow point...
*/
ctr32 += (unsigned int)blocks;
if (ctr32 < blocks) {
blocks -= ctr32;
ctr32 = 0;
}
blocks *= CHACHA_BLK_SIZE;
ChaCha20_ctr32(out, inp, blocks, key->key.d, key->counter);
len -= blocks;
inp += blocks;
out += blocks;
key->counter[0] = ctr32;
if (ctr32 == 0) key->counter[1]++;
}
if (rem) {
memset(key->buf, 0, sizeof(key->buf));
ChaCha20_ctr32(key->buf, key->buf, CHACHA_BLK_SIZE,
key->key.d, key->counter);
for (n = 0; n < rem; n++)
out[n] = inp[n] ^ key->buf[n];
key->partial_len = rem;
}
return 1;
}
static int dpdkcpt_chacha20_poly1305_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
int ret;
struct ossl_dpdk_cpoly_ctx *dpdk_ctx = EVP_CIPHER_CTX_get_cipher_data(ctx);
if (dpdk_ctx->tls_aad_len >= 0)
ret = dpdkcpt_chacha20_poly1305_tls_cipher(ctx, out, in, len);
else
ret = dpdkcpt_chacha20_poly1305_crypto(ctx, out, in, len);
if (ret < 0)
return -1;
return ret;
}
/* sw_chacha20_poly1305_tls_cipher API is invoked if protocol version is TLS1.2
* and data(PT/CT) len is less than hw_offload_pkt_sz_threshold
* This API will use Chachapoly ARMv8 implementation for doing the operation.
*/
static int sw_chacha20_poly1305_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
struct ossl_dpdk_cpoly_ctx *dpdk_ctx =
(struct ossl_dpdk_cpoly_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
EVP_CHACHA_AEAD_CTX *actx = (EVP_CHACHA_AEAD_CTX *)dpdk_ctx->actx;
size_t tail, tohash_len, buf_len, plen = actx->tls_payload_length;
unsigned char *buf, *tohash, *ctr, storage[sizeof(zero) + 32];
int enc = EVP_CIPHER_CTX_encrypting(ctx);
if (len != plen + POLY1305_BLOCK_SIZE)
return -1;
buf = storage + ((0 - (size_t)storage) & 15); /* align */
ctr = buf + CHACHA_BLK_SIZE;
tohash = buf + CHACHA_BLK_SIZE - POLY1305_BLOCK_SIZE;
if (plen <= CHACHA_BLK_SIZE) {
size_t i;
actx->key.counter[0] = 0;
ChaCha20_ctr32(buf, zero, (buf_len = 2 * CHACHA_BLK_SIZE),
actx->key.key.d, actx->key.counter);
Poly1305_Init(POLY1305_ctx(actx), buf);
actx->key.partial_len = 0;
memcpy(tohash, actx->tls_aad, POLY1305_BLOCK_SIZE);
tohash_len = POLY1305_BLOCK_SIZE;
actx->len.aad = EVP_AEAD_TLS1_AAD_LEN;
actx->len.text = plen;
if (enc) {
for (i = 0; i < plen; i++) {
out[i] = ctr[i] ^= in[i];
}
} else {
for (i = 0; i < plen; i++) {
unsigned char c = in[i];
out[i] = ctr[i] ^ c;
ctr[i] = c;
}
}
in += i;
out += i;
tail = (0 - i) & (POLY1305_BLOCK_SIZE - 1);
memset(ctr + i, 0, tail);
ctr += i + tail;
tohash_len += i + tail;
} else {
actx->key.counter[0] = 0;
ChaCha20_ctr32(buf, zero, (buf_len = CHACHA_BLK_SIZE),
actx->key.key.d, actx->key.counter);
Poly1305_Init(POLY1305_ctx(actx), buf);
actx->key.counter[0] = 1;
actx->key.partial_len = 0;
Poly1305_Update(POLY1305_ctx(actx), actx->tls_aad, POLY1305_BLOCK_SIZE);
tohash = ctr;
tohash_len = 0;
actx->len.aad = EVP_AEAD_TLS1_AAD_LEN;
actx->len.text = plen;
if (enc) {
ChaCha20_ctr32(out, in, plen, actx->key.key.d, actx->key.counter);
Poly1305_Update(POLY1305_ctx(actx), out, plen);
} else {
Poly1305_Update(POLY1305_ctx(actx), in, plen);
ChaCha20_ctr32(out, in, plen, actx->key.key.d, actx->key.counter);
}
in += plen;
out += plen;
tail = (0 - plen) & (POLY1305_BLOCK_SIZE - 1);
Poly1305_Update(POLY1305_ctx(actx), zero, tail);
}
{
const union {
long one;
char little;
} is_endian = { 1 };
if (is_endian.little) {
memcpy(ctr, (unsigned char *)&actx->len, POLY1305_BLOCK_SIZE);
} else {
ctr[0] = (unsigned char)(actx->len.aad);
ctr[1] = (unsigned char)(actx->len.aad>>8);
ctr[2] = (unsigned char)(actx->len.aad>>16);
ctr[3] = (unsigned char)(actx->len.aad>>24);
ctr[4] = (unsigned char)(actx->len.aad>>32);
ctr[5] = (unsigned char)(actx->len.aad>>40);
ctr[6] = (unsigned char)(actx->len.aad>>48);
ctr[7] = (unsigned char)(actx->len.aad>>56);
ctr[8] = (unsigned char)(actx->len.text);
ctr[9] = (unsigned char)(actx->len.text>>8);
ctr[10] = (unsigned char)(actx->len.text>>16);
ctr[11] = (unsigned char)(actx->len.text>>24);
ctr[12] = (unsigned char)(actx->len.text>>32);
ctr[13] = (unsigned char)(actx->len.text>>40);
ctr[14] = (unsigned char)(actx->len.text>>48);
ctr[15] = (unsigned char)(actx->len.text>>56);
}
tohash_len += POLY1305_BLOCK_SIZE;
}
Poly1305_Update(POLY1305_ctx(actx), tohash, tohash_len);
OPENSSL_cleanse(buf, buf_len);
Poly1305_Final(POLY1305_ctx(actx), enc ? actx->tag
: tohash);
actx->tls_payload_length = NO_TLS_PAYLOAD_LENGTH;
if (enc) {
memcpy(out, actx->tag, POLY1305_BLOCK_SIZE);
} else {
if (CRYPTO_memcmp(tohash, in, POLY1305_BLOCK_SIZE)) {
memset(out - (len - POLY1305_BLOCK_SIZE), 0,
len - POLY1305_BLOCK_SIZE);
return -1;
}
}
return len;
}
/* Below API added for TLS1_2 protocol
*
* AAD data is alway set via control function in case of TLS1_2
* IV is updating by XOR'ing with sequence number
* Here, len value is comming from SSL layer is equal to
* (PT/CT length + AUTH tag len) for both encryption/decryption.*/
static int dpdkcpt_chacha20_poly1305_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
int enc;
ossl_cry_op_status_t **status_ptr = NULL;
ossl_cry_op_status_t *new_st_ptr[E_DPDKCPT_NUM_DEQUEUED_OPS];
ossl_cry_op_status_t current_job;
uint16_t num_enqueued_ops, num_dequeued_ops;
struct rte_crypto_op *deq_op_ptr[E_DPDKCPT_NUM_DEQUEUED_OPS];
uint8_t i, j, numpipes, numalloc, k, ret = 0;
struct ossl_dpdk_cpoly_ctx *dpdk_ctx = EVP_CIPHER_CTX_get_cipher_data(ctx);
uint16_t datalen = (uint16_t)(len - EVP_CHACHAPOLY_TLS_TAG_LEN);
ASYNC_JOB *job = NULL;
ASYNC_WAIT_CTX *wctx_local = NULL;
async_pipe_job_t pip_jobs[MAX_PIPE_JOBS];
uint8_t pip_jb_qsz = 0;
if ((in != out) || (len < EVP_CHACHAPOLY_TLS_TAG_LEN))
return -1;
numpipes = dpdk_ctx->numpipes;
/* Bydefault number of pipe is one */
if (numpipes == 0) {
numpipes = 1;
dpdk_ctx->input_len = malloc(sizeof(int));
dpdk_ctx->input_len[0] = len;
dpdk_ctx->output_buf = &out;
/* As it's inplace */
dpdk_ctx->input_buf = &out;
}
if ((datalen < dpdk_ctx->hw_offload_pkt_sz_threshold) && (numpipes == 1)) {
ret = sw_chacha20_poly1305_tls_cipher(ctx, out, in, len);
dpdk_ctx->numpipes = 0;
dpdk_ctx->aad_cnt = 0;
return ret;
}
enc = EVP_CIPHER_CTX_encrypting(ctx);
status_ptr = malloc(sizeof(ossl_cry_op_status_t *) * numpipes);
if (unlikely(status_ptr == NULL)) {
engine_log(ENG_LOG_ERR, "Malloc failed\n");
numalloc = 0;
ret = -1;
goto free_resources;
}
job = ASYNC_get_current_job();
if (job != NULL)
wctx_local = (ASYNC_WAIT_CTX *)ASYNC_get_wait_ctx(job);
for (i = 0; i < numpipes; i++) {
dpdk_ctx->input_len[i] -= EVP_CHACHAPOLY_TLS_TAG_LEN;
/* Get a burst of mbufs */
dpdk_ctx->ibufs[i] = rte_pktmbuf_alloc(mbuf_pool);
if (unlikely(dpdk_ctx->ibufs[i] == NULL)) {
engine_log(ENG_LOG_ERR, "Not enough mbufs available\n");
numalloc = i;
ret = -1;
goto free_resources;
}
/* Create crypto session and initialize it for
* the crypto device
*/
ret = create_crypto_operation_pl(dpdk_ctx,
dpdk_ctx->input_buf[i], dpdk_ctx->input_len[i],
enc, i);
if (unlikely(ret < 0)) {
/* roll back last buf */
rte_pktmbuf_free(dpdk_ctx->ibufs[i]);
dpdk_ctx->ibufs[i] = NULL;
numalloc = i;
ret = -1;
goto free_resources;
}
rte_crypto_op_attach_sym_session(dpdk_ctx->ops[i],
dpdk_ctx->cry_session);
dpdk_ctx->ops[i]->sym->m_src = dpdk_ctx->ibufs[i];
status_ptr[i] = rte_crypto_op_ctod_offset(dpdk_ctx->ops[i],
ossl_cry_op_status_t *,
E_DPDKCPT_COP_METADATA_OFF);
status_ptr[i]->is_complete = 0;
status_ptr[i]->is_successful = 0;
status_ptr[i]->numpipes = numpipes;
status_ptr[i]->wctx_p = wctx_local;
}
for (k=0, num_enqueued_ops=0;
((num_enqueued_ops < numpipes) && (k < MAX_ENQUEUE_ATTEMPTS)); k++) {
num_enqueued_ops +=
rte_cryptodev_enqueue_burst(
dpdk_ctx->dev_id, sym_queues[rte_lcore_id()],
&dpdk_ctx->ops[num_enqueued_ops],
numpipes - num_enqueued_ops);
}
if (unlikely(num_enqueued_ops < numpipes)) {
engine_log(ENG_LOG_ERR, "Enqueue failed - too many attempts\n");
numalloc = numpipes;
ret = -1;
goto free_resources;
}
CPT_ATOMIC_INC_N(cpt_num_cipher_pipeline_requests_in_flight, numpipes);
CPT_ATOMIC_INC(cpt_num_requests_in_flight);
pause_async_job();
CPT_ATOMIC_DEC_N(cpt_num_cipher_pipeline_requests_in_flight, numpipes);
CPT_ATOMIC_DEC(cpt_num_requests_in_flight);
while (status_ptr[0]->is_successful == 0) {
do {
num_dequeued_ops = rte_cryptodev_dequeue_burst(
dpdk_ctx->dev_id, sym_queues[rte_lcore_id()],
&deq_op_ptr[0], E_DPDKCPT_NUM_DEQUEUED_OPS);
for (i = 0; i < num_dequeued_ops; i++) {
new_st_ptr[i] = rte_crypto_op_ctod_offset(
deq_op_ptr[i], ossl_cry_op_status_t *,
E_DPDKCPT_COP_METADATA_OFF);
new_st_ptr[i]->is_complete = 1;
/* Check if operation was processed successfully */
if (deq_op_ptr[i]->status !=
RTE_CRYPTO_OP_STATUS_SUCCESS) {
engine_log(ENG_LOG_ERR, "Crypto (CPOLY) op status is not success (err:%d)\n",
deq_op_ptr[i]->status);
new_st_ptr[i]->is_successful = 0;
} else {
new_st_ptr[i]->is_successful = 1;
if(new_st_ptr[i]->wctx_p)
check_for_job_completion(status_ptr[0]->wctx_p,
new_st_ptr[i]->wctx_p, new_st_ptr[i]->numpipes,
&pip_jb_qsz, &pip_jobs[0]);
}
}
} while(pip_jb_qsz>0);
}
for (i = 0; i < numpipes; i++) {
void *buf = rte_pktmbuf_mtod_offset(
dpdk_ctx->ops[i]->sym->m_src, char *,
dpdk_ctx->ops[i]->sym[0].aead.data.offset);
memcpy(dpdk_ctx->output_buf[i], buf, dpdk_ctx->input_len[i]);
memcpy(dpdk_ctx->output_buf[i] + dpdk_ctx->input_len[i],
dpdk_ctx->ops[i]->sym[0].aead.digest.data,
EVP_CHACHAPOLY_TLS_TAG_LEN);
rte_pktmbuf_free(dpdk_ctx->ops[i]->sym->m_src);
dpdk_ctx->ops[i]->sym->m_src = NULL;
}
rte_mempool_put_bulk(crypto_sym_op_pool, (void **)dpdk_ctx->ops,
numpipes);
for (int j = 0; j < numpipes; j++)
dpdk_ctx->ops[j] = NULL;
ret = 1;
free_resources:
if (unlikely(ret < 0)) {
for (i = 0; i < numalloc; i++) {
rte_pktmbuf_free(dpdk_ctx->ops[i]->sym->m_src);
dpdk_ctx->ops[i]->sym->m_src = NULL;
rte_mempool_put(crypto_sym_op_pool, dpdk_ctx->ops[i]);
dpdk_ctx->ops[i] = NULL;
}
}
dpdk_ctx->numpipes = 0;
dpdk_ctx->aad_cnt = 0;
if (status_ptr != NULL) {
free(status_ptr);
status_ptr = NULL;
}
return ret;
}
static inline void cpoly_mac_init(EVP_CHACHA_AEAD_CTX *actx)
{
size_t plen = actx->tls_payload_length;
actx->key.counter[0] = 0;
ChaCha20_ctr32(actx->key.buf, zero, CHACHA_BLK_SIZE,
actx->key.key.d, actx->key.counter);
Poly1305_Init(POLY1305_ctx(actx), actx->key.buf);
actx->key.counter[0] = 1;
actx->key.partial_len = 0;
actx->len.aad = actx->len.text = 0;
actx->mac_inited = 1;
if (plen != NO_TLS_PAYLOAD_LENGTH) {
Poly1305_Update(POLY1305_ctx(actx), actx->tls_aad,
EVP_AEAD_TLS1_AAD_LEN);