add session function.
Signed-off-by: Hanxiao Li <li.hanxiao@zte.com.cn>
---
drivers/crypto/zsda/zsda_sym_session.c | 231 +++++++++++++++++++++++++
drivers/crypto/zsda/zsda_sym_session.h | 74 ++++++++
2 files changed, 305 insertions(+)
diff --git a/drivers/crypto/zsda/zsda_sym_session.c b/drivers/crypto/zsda/zsda_sym_session.c
index ddb6b6a62f..7189b353c4 100644
--- a/drivers/crypto/zsda/zsda_sym_session.c
+++ b/drivers/crypto/zsda/zsda_sym_session.c
@@ -279,3 +279,234 @@ zsda_aes_key_expansion(uint8_t *round_key, uint32_t round_num,
round_key[j + 3] = round_key[k + 3] ^ tempa[3];
}
}
+
+void
+zsda_reverse_memcpy(uint8_t *dst, const uint8_t *src, size_t n)
+{
+ size_t i;
+
+ for (i = 0; i < n; ++i)
+ dst[n - 1 - i] = src[i];
+}
+
+static void
+zsda_decry_set_key(uint8_t key[64], const uint8_t *key1_ptr, uint8_t skey_len,
+ enum rte_crypto_cipher_algorithm algo)
+{
+ uint8_t round_num;
+ uint8_t dec_key1[ZSDA_AES_MAX_KEY_BYTE_LEN] = {0};
+ uint8_t aes_round_key[ZSDA_AES_MAX_EXP_BYTE_SIZE] = {0};
+ uint32_t sm4_round_key[ZSDA_SM4_MAX_EXP_DWORD_SIZE] = {0};
+
+ switch (algo) {
+ case RTE_CRYPTO_CIPHER_AES_XTS:
+ round_num = (skey_len == ZSDA_SYM_XTS_256_SKEY_LEN)
+ ? ZSDA_AES256_ROUND_NUM
+ : ZSDA_AES512_ROUND_NUM;
+ zsda_aes_key_expansion(aes_round_key, round_num, key1_ptr,
+ skey_len);
+ rte_memcpy(dec_key1,
+ ((uint8_t *)aes_round_key + (16 * round_num)), 16);
+
+ if (skey_len == ZSDA_SYM_XTS_512_SKEY_LEN &&
+ (16 * round_num) <= ZSDA_AES_MAX_EXP_BYTE_SIZE) {
+ for (int i = 0; i < 16; i++) {
+ dec_key1[i + 16] =
+ aes_round_key[(16 * (round_num - 1)) + i];
+ }
+ }
+ break;
+ case RTE_CRYPTO_CIPHER_SM4_XTS:
+ zsda_sm4_key_expansion(sm4_round_key, key1_ptr);
+ for (size_t i = 0; i < 4; i++)
+ u32_to_u8((uint32_t *)sm4_round_key +
+ ZSDA_SM4_MAX_EXP_DWORD_SIZE - 1 - i,
+ dec_key1 + (4 * i));
+ break;
+ default:
+ ZSDA_LOG(ERR, "unknown cipher algo!");
+ return;
+ }
+
+ if (skey_len == ZSDA_SYM_XTS_256_SKEY_LEN) {
+ zsda_reverse_memcpy((uint8_t *)key + ZSDA_SYM_XTS_256_KEY2_OFF,
+ key1_ptr + skey_len, skey_len);
+ zsda_reverse_memcpy((uint8_t *)key + ZSDA_SYM_XTS_256_KEY1_OFF,
+ dec_key1, skey_len);
+ } else {
+ zsda_reverse_memcpy(key, key1_ptr + skey_len, skey_len);
+ zsda_reverse_memcpy((uint8_t *)key + ZSDA_SYM_XTS_512_KEY1_OFF,
+ dec_key1, skey_len);
+ }
+}
+
+static uint8_t
+zsda_sym_lbads(uint32_t dataunit_len)
+{
+ uint8_t lbads;
+
+ switch (dataunit_len) {
+ case ZSDA_AES_LBADS_512:
+ lbads = ZSDA_AES_LBADS_INDICATE_512;
+ break;
+ case ZSDA_AES_LBADS_4096:
+ lbads = ZSDA_AES_LBADS_INDICATE_4096;
+ break;
+ case ZSDA_AES_LBADS_8192:
+ lbads = ZSDA_AES_LBADS_INDICATE_8192;
+ break;
+ case ZSDA_AES_LBADS_0:
+ lbads = ZSDA_AES_LBADS_INDICATE_0;
+ break;
+ default:
+ ZSDA_LOG(ERR, "dataunit_len should be 0/512/4096/8192 - %d.",
+ dataunit_len);
+ lbads = ZSDA_AES_LBADS_INDICATE_INVALID;
+ break;
+ }
+ return lbads;
+}
+
+static int
+zsda_set_session_cipher(struct zsda_sym_session *sess,
+ struct rte_crypto_cipher_xform *cipher_xform)
+{
+ uint8_t skey_len = 0;
+ const uint8_t *key1_ptr = NULL;
+
+ if (cipher_xform->key.length > ZSDA_CIPHER_KEY_MAX_LEN) {
+ ZSDA_LOG(ERR, "key length not supported");
+ return -EINVAL;
+ }
+
+ sess->chain_order = ZSDA_SYM_CHAIN_ONLY_CIPHER;
+ sess->cipher.iv.offset = cipher_xform->iv.offset;
+ sess->cipher.iv.length = cipher_xform->iv.length;
+ sess->cipher.op = cipher_xform->op;
+ sess->cipher.algo = cipher_xform->algo;
+ sess->cipher.dataunit_len = cipher_xform->dataunit_len;
+ sess->cipher.lbads = zsda_sym_lbads(cipher_xform->dataunit_len);
+ if (sess->cipher.lbads == 0xff) {
+ ZSDA_LOG(ERR, "dataunit_len wrong!");
+ return -EINVAL;
+ }
+
+ skey_len = (cipher_xform->key.length / 2) & 0xff;
+
+ /* key set */
+ if (sess->cipher.op == RTE_CRYPTO_CIPHER_OP_ENCRYPT) {
+ sess->cipher.key_encry.length = cipher_xform->key.length;
+ if (skey_len == ZSDA_SYM_XTS_256_SKEY_LEN) {
+ zsda_reverse_memcpy((uint8_t *)sess->cipher.key_encry.data +
+ ZSDA_SYM_XTS_256_KEY2_OFF,
+ (cipher_xform->key.data + skey_len),
+ skey_len);
+ zsda_reverse_memcpy(((uint8_t *)sess->cipher.key_encry.data +
+ ZSDA_SYM_XTS_256_KEY1_OFF),
+ cipher_xform->key.data, skey_len);
+ } else
+ zsda_reverse_memcpy((uint8_t *)sess->cipher.key_encry.data,
+ cipher_xform->key.data,
+ cipher_xform->key.length);
+ } else if (sess->cipher.op == RTE_CRYPTO_CIPHER_OP_DECRYPT) {
+ sess->cipher.key_decry.length = cipher_xform->key.length;
+ key1_ptr = cipher_xform->key.data;
+ zsda_decry_set_key(sess->cipher.key_decry.data, key1_ptr, skey_len,
+ sess->cipher.algo);
+ }
+
+ return ZSDA_SUCCESS;
+}
+
+static void
+zsda_set_session_auth(struct zsda_sym_session *sess,
+ struct rte_crypto_auth_xform *xform)
+{
+ sess->auth.op = xform->op;
+ sess->auth.algo = xform->algo;
+ sess->auth.digest_length = xform->digest_length;
+ sess->chain_order = ZSDA_SYM_CHAIN_ONLY_AUTH;
+}
+
+static struct rte_crypto_auth_xform *
+zsda_get_auth_xform(struct rte_crypto_sym_xform *xform)
+{
+ do {
+ if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH)
+ return &xform->auth;
+
+ xform = xform->next;
+ } while (xform);
+
+ return NULL;
+}
+
+static struct rte_crypto_cipher_xform *
+zsda_get_cipher_xform(struct rte_crypto_sym_xform *xform)
+{
+ do {
+ if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER)
+ return &xform->cipher;
+
+ xform = xform->next;
+ } while (xform);
+
+ return NULL;
+}
+
+/** Configure the session from a crypto xform chain */
+static enum zsda_sym_chain_order
+zsda_crypto_get_chain_order(const struct rte_crypto_sym_xform *xform)
+{
+ enum zsda_sym_chain_order res = ZSDA_SYM_CHAIN_NOT_SUPPORTED;
+
+ if (xform != NULL) {
+ if (xform->type == RTE_CRYPTO_SYM_XFORM_AUTH) {
+ if (xform->next == NULL)
+ res = ZSDA_SYM_CHAIN_ONLY_AUTH;
+ else if (xform->next->type ==
+ RTE_CRYPTO_SYM_XFORM_CIPHER)
+ res = ZSDA_SYM_CHAIN_AUTH_CIPHER;
+ }
+ if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
+ if (xform->next == NULL)
+ res = ZSDA_SYM_CHAIN_ONLY_CIPHER;
+ else if (xform->next->type == RTE_CRYPTO_SYM_XFORM_AUTH)
+ res = ZSDA_SYM_CHAIN_CIPHER_AUTH;
+ }
+ }
+
+ return res;
+}
+
+/* Set session cipher parameters */
+int
+zsda_crypto_set_session_parameters(void *sess_priv,
+ struct rte_crypto_sym_xform *xform)
+{
+
+ struct zsda_sym_session *sess = sess_priv;
+ struct rte_crypto_cipher_xform *cipher_xform =
+ zsda_get_cipher_xform(xform);
+ struct rte_crypto_auth_xform *auth_xform =
+ zsda_get_auth_xform(xform);
+
+ int ret = ZSDA_SUCCESS;
+
+ sess->chain_order = zsda_crypto_get_chain_order(xform);
+ switch (sess->chain_order) {
+ case ZSDA_SYM_CHAIN_ONLY_CIPHER:
+ zsda_set_session_cipher(sess, cipher_xform);
+ break;
+ case ZSDA_SYM_CHAIN_ONLY_AUTH:
+ zsda_set_session_auth(sess, auth_xform);
+ break;
+
+ default:
+ ZSDA_LOG(ERR, "Invalid chain order");
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
diff --git a/drivers/crypto/zsda/zsda_sym_session.h b/drivers/crypto/zsda/zsda_sym_session.h
index 15897b1aaf..eefd38f8bb 100644
--- a/drivers/crypto/zsda/zsda_sym_session.h
+++ b/drivers/crypto/zsda/zsda_sym_session.h
@@ -5,5 +5,79 @@
#ifndef _ZSDA_SYM_SESSION_H_
#define _ZSDA_SYM_SESSION_H_
+#define ZSDA_SYM_XTS_IV_SLBA_OFF (8)
+#define ZSDA_SYM_XTS_256_SKEY_LEN (16)
+#define ZSDA_SYM_XTS_512_SKEY_LEN (32)
+#define ZSDA_SYM_XTS_256_KEY2_OFF (16)
+#define ZSDA_SYM_XTS_256_KEY1_OFF (48)
+#define ZSDA_SYM_XTS_512_KEY1_OFF (32)
+#define ZSDA_SYM_MIN_SRC_LEN_HASH (16)
+
+#define ZSDA_AES256_ROUND_NUM (10)
+#define ZSDA_AES512_ROUND_NUM (14)
+#define ZSDA_AES_MAX_EXP_BYTE_SIZE (240)
+#define ZSDA_AES_MAX_KEY_BYTE_LEN (32)
+#define ZSDA_SM4_MAX_EXP_DWORD_SIZE (32)
+
+#define ZSDA_AES_LBADS_0 (0)
+#define ZSDA_AES_LBADS_512 (512)
+#define ZSDA_AES_LBADS_4096 (4096)
+#define ZSDA_AES_LBADS_8192 (8192)
+
+#define ZSDA_AES_LBADS_INDICATE_0 (0x0)
+#define ZSDA_AES_LBADS_INDICATE_512 (0x9)
+#define ZSDA_AES_LBADS_INDICATE_4096 (0xC)
+#define ZSDA_AES_LBADS_INDICATE_8192 (0xD)
+#define ZSDA_AES_LBADS_INDICATE_INVALID (0xff)
+
+#define ZSDA_CIPHER_KEY_MAX_LEN 64
+
+enum zsda_sym_chain_order {
+ ZSDA_SYM_CHAIN_ONLY_CIPHER,
+ ZSDA_SYM_CHAIN_ONLY_AUTH,
+ ZSDA_SYM_CHAIN_CIPHER_AUTH,
+ ZSDA_SYM_CHAIN_AUTH_CIPHER,
+ ZSDA_SYM_CHAIN_NOT_SUPPORTED
+};
+
+struct __rte_cache_aligned zsda_sym_session {
+ enum zsda_sym_chain_order chain_order;
+
+ /* Cipher Parameters */
+ struct {
+ enum rte_crypto_cipher_operation op;
+ enum rte_crypto_cipher_algorithm algo;
+ struct {
+ uint8_t data[ZSDA_CIPHER_KEY_MAX_LEN];
+ size_t length;
+ } key_encry;
+ struct {
+ uint8_t data[ZSDA_CIPHER_KEY_MAX_LEN];
+ size_t length;
+ } key_decry;
+ struct {
+ uint32_t offset;
+ size_t length;
+ } iv;
+
+ uint32_t dataunit_len;
+ uint8_t lbads;
+ } cipher;
+
+ struct {
+ enum rte_crypto_auth_operation op;
+ /* Auth operation */
+ enum rte_crypto_auth_algorithm algo;
+ /* Auth algorithm */
+ uint16_t digest_length;
+ } auth;
+
+ bool cipher_first;
+};
+
+void zsda_reverse_memcpy(uint8_t *dst, const uint8_t *src, size_t n);
+
+int zsda_crypto_set_session_parameters(void *sess_priv,
+ struct rte_crypto_sym_xform *xform);
#endif /* _ZSDA_SYM_SESSION_H_ */
--
2.27.0