[PATCH 20.11 1/2] crypto/ipsec_mb: fix length and offset settings

[Pablo de Lara <pablo.de.lara.guarch@intel.com>]

[ upstream commit a501609ea6466ed8526c0dfadedee332a4d4a451 ]

KASUMI, SNOW3G and ZUC require lengths and offsets to
be set in bits or bytes depending on the algorithm.
There were some algorithms that were mixing these two,
so this commit is fixing this issue.

Fixes: ae8e085c608d ("crypto/aesni_mb: support KASUMI F8/F9")
Fixes: 6c42e0cf4d12 ("crypto/aesni_mb: support SNOW3G-UEA2/UIA2")
Fixes: fd8df85487c4 ("crypto/aesni_mb: support ZUC-EEA3/EIA3")

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c | 126 +++++++++++++++------
 1 file changed, 90 insertions(+), 36 deletions(-)

diff --git a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
index f4ffb21e10..ab9864739d 100644
--- a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
+++ b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
@@ -1057,7 +1057,9 @@ get_session(struct aesni_mb_qp *qp, struct rte_crypto_op *op)
 
 static inline uint64_t
 auth_start_offset(struct rte_crypto_op *op, struct aesni_mb_session *session,
-		uint32_t oop)
+		uint32_t oop, const uint32_t auth_offset,
+		const uint32_t cipher_offset, const uint32_t auth_length,
+		const uint32_t cipher_length)
 {
 	struct rte_mbuf *m_src, *m_dst;
 	uint8_t *p_src, *p_dst;
@@ -1066,7 +1068,7 @@ auth_start_offset(struct rte_crypto_op *op, struct aesni_mb_session *session,
 
 	/* Only cipher then hash needs special calculation. */
 	if (!oop || session->chain_order != CIPHER_HASH)
-		return op->sym->auth.data.offset;
+		return auth_offset;
 
 	m_src = op->sym->m_src;
 	m_dst = op->sym->m_dst;
@@ -1074,24 +1076,23 @@ auth_start_offset(struct rte_crypto_op *op, struct aesni_mb_session *session,
 	p_src = rte_pktmbuf_mtod(m_src, uint8_t *);
 	p_dst = rte_pktmbuf_mtod(m_dst, uint8_t *);
 	u_src = (uintptr_t)p_src;
-	u_dst = (uintptr_t)p_dst + op->sym->auth.data.offset;
+	u_dst = (uintptr_t)p_dst + auth_offset;
 
 	/**
 	 * Copy the content between cipher offset and auth offset for generating
 	 * correct digest.
 	 */
-	if (op->sym->cipher.data.offset > op->sym->auth.data.offset)
-		memcpy(p_dst + op->sym->auth.data.offset,
-				p_src + op->sym->auth.data.offset,
-				op->sym->cipher.data.offset -
-				op->sym->auth.data.offset);
-
+	if (cipher_offset > auth_offset)
+		memcpy(p_dst + auth_offset,
+				p_src + auth_offset,
+				cipher_offset -
+				auth_offset);
 	/**
 	 * Copy the content between (cipher offset + length) and (auth offset +
 	 * length) for generating correct digest
 	 */
-	cipher_end = op->sym->cipher.data.offset + op->sym->cipher.data.length;
-	auth_end = op->sym->auth.data.offset + op->sym->auth.data.length;
+	cipher_end = cipher_offset + cipher_length;
+	auth_end = auth_offset + auth_length;
 	if (cipher_end < auth_end)
 		memcpy(p_dst + cipher_end, p_src + cipher_end,
 				auth_end - cipher_end);
@@ -1246,7 +1247,12 @@ set_mb_job_params(JOB_AES_HMAC *job, struct aesni_mb_qp *qp,
 	struct rte_mbuf *m_src = op->sym->m_src, *m_dst;
 	struct aesni_mb_session *session;
 	uint32_t m_offset, oop;
-
+#if IMB_VERSION(0, 53, 3) <= IMB_VERSION_NUM
+	uint32_t auth_off_in_bytes;
+	uint32_t ciph_off_in_bytes;
+	uint32_t auth_len_in_bytes;
+	uint32_t ciph_len_in_bytes;
+#endif
 	session = get_session(qp, op);
 	if (session == NULL) {
 		op->status = RTE_CRYPTO_OP_STATUS_INVALID_SESSION;
@@ -1362,6 +1368,7 @@ set_mb_job_params(JOB_AES_HMAC *job, struct aesni_mb_qp *qp,
 	if (job->cipher_mode == IMB_CIPHER_ZUC_EEA3) {
 		job->aes_enc_key_expanded = session->cipher.zuc_cipher_key;
 		job->aes_dec_key_expanded = session->cipher.zuc_cipher_key;
+		m_offset >>= 3;
 	} else if (job->cipher_mode == IMB_CIPHER_SNOW3G_UEA2_BITLEN) {
 		job->enc_keys = &session->cipher.pKeySched_snow3g_cipher;
 		m_offset = 0;
@@ -1418,9 +1425,6 @@ set_mb_job_params(JOB_AES_HMAC *job, struct aesni_mb_qp *qp,
 
 	switch (job->hash_alg) {
 	case AES_CCM:
-		job->cipher_start_src_offset_in_bytes =
-				op->sym->aead.data.offset;
-		job->msg_len_to_cipher_in_bytes = op->sym->aead.data.length;
 		job->hash_start_src_offset_in_bytes = op->sym->aead.data.offset;
 		job->msg_len_to_hash_in_bytes = op->sym->aead.data.length;
 
@@ -1430,19 +1434,11 @@ set_mb_job_params(JOB_AES_HMAC *job, struct aesni_mb_qp *qp,
 
 	case AES_GMAC:
 		if (session->cipher.mode == GCM) {
-			job->cipher_start_src_offset_in_bytes =
-					op->sym->aead.data.offset;
 			job->hash_start_src_offset_in_bytes =
 					op->sym->aead.data.offset;
-			job->msg_len_to_cipher_in_bytes =
-					op->sym->aead.data.length;
 			job->msg_len_to_hash_in_bytes =
 					op->sym->aead.data.length;
 		} else {
-			job->cipher_start_src_offset_in_bytes =
-					op->sym->auth.data.offset;
-			job->hash_start_src_offset_in_bytes =
-					op->sym->auth.data.offset;
 			job->msg_len_to_cipher_in_bytes = 0;
 			job->msg_len_to_hash_in_bytes = 0;
 		}
@@ -1453,10 +1449,7 @@ set_mb_job_params(JOB_AES_HMAC *job, struct aesni_mb_qp *qp,
 
 #if IMB_VERSION(0, 54, 3) <= IMB_VERSION_NUM
 	case IMB_AUTH_CHACHA20_POLY1305:
-		job->cipher_start_src_offset_in_bytes = op->sym->aead.data.offset;
 		job->hash_start_src_offset_in_bytes = op->sym->aead.data.offset;
-		job->msg_len_to_cipher_in_bytes =
-				op->sym->aead.data.length;
 		job->msg_len_to_hash_in_bytes =
 					op->sym->aead.data.length;
 
@@ -1464,26 +1457,87 @@ set_mb_job_params(JOB_AES_HMAC *job, struct aesni_mb_qp *qp,
 				session->iv.offset);
 		break;
 #endif
-	default:
-		/* For SNOW3G, length and offsets are already in bits */
-		job->cipher_start_src_offset_in_bytes =
-				op->sym->cipher.data.offset;
-		job->msg_len_to_cipher_in_bytes = op->sym->cipher.data.length;
+#if IMB_VERSION(0, 53, 3) <= IMB_VERSION_NUM
+	/* ZUC and SNOW3G require length in bits and offset in bytes */
+	case IMB_AUTH_ZUC_EIA3_BITLEN:
+	case IMB_AUTH_SNOW3G_UIA2_BITLEN:
+		auth_off_in_bytes = op->sym->auth.data.offset >> 3;
+		ciph_off_in_bytes = op->sym->cipher.data.offset >> 3;
+		auth_len_in_bytes = op->sym->auth.data.length >> 3;
+		ciph_len_in_bytes = op->sym->cipher.data.length >> 3;
 
 		job->hash_start_src_offset_in_bytes = auth_start_offset(op,
-				session, oop);
+				session, oop, auth_off_in_bytes,
+				ciph_off_in_bytes, auth_len_in_bytes,
+				ciph_len_in_bytes);
+		job->msg_len_to_hash_in_bits = op->sym->auth.data.length;
+
+		job->iv = rte_crypto_op_ctod_offset(op, uint8_t *,
+			session->iv.offset);
+		break;
+
+	/* KASUMI requires lengths and offset in bytes */
+	case IMB_AUTH_KASUMI_UIA1:
+		auth_off_in_bytes = op->sym->auth.data.offset >> 3;
+		ciph_off_in_bytes = op->sym->cipher.data.offset >> 3;
+		auth_len_in_bytes = op->sym->auth.data.length >> 3;
+		ciph_len_in_bytes = op->sym->cipher.data.length >> 3;
+
+		job->hash_start_src_offset_in_bytes = auth_start_offset(op,
+				session, oop, auth_off_in_bytes,
+				ciph_off_in_bytes, auth_len_in_bytes,
+				ciph_len_in_bytes);
+		job->msg_len_to_hash_in_bytes = auth_len_in_bytes;
+
+		job->iv = rte_crypto_op_ctod_offset(op, uint8_t *,
+			session->iv.offset);
+		break;
+#endif
+
+	default:
+		job->hash_start_src_offset_in_bytes = auth_start_offset(op,
+				session, oop, op->sym->auth.data.offset,
+				op->sym->cipher.data.offset,
+				op->sym->auth.data.length,
+				op->sym->cipher.data.length);
 		job->msg_len_to_hash_in_bytes = op->sym->auth.data.length;
 
 		job->iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 			session->iv.offset);
 	}
 
+	switch (job->cipher_mode) {
 #if IMB_VERSION(0, 53, 3) <= IMB_VERSION_NUM
-	if (job->cipher_mode == IMB_CIPHER_ZUC_EEA3)
-		job->msg_len_to_cipher_in_bytes >>= 3;
-	else if (job->hash_alg == IMB_AUTH_KASUMI_UIA1)
-		job->msg_len_to_hash_in_bytes >>= 3;
+	/* ZUC requires length and offset in bytes */
+	case IMB_CIPHER_ZUC_EEA3:
+		job->cipher_start_src_offset_in_bytes =
+					op->sym->cipher.data.offset >> 3;
+		job->msg_len_to_cipher_in_bytes =
+					op->sym->cipher.data.length >> 3;
+		break;
+	/* ZUC and SNOW3G require length and offset in bits */
+	case IMB_CIPHER_SNOW3G_UEA2_BITLEN:
+	case IMB_CIPHER_KASUMI_UEA1_BITLEN:
+		job->cipher_start_src_offset_in_bits =
+					op->sym->cipher.data.offset;
+		job->msg_len_to_cipher_in_bits =
+					op->sym->cipher.data.length;
+		break;
+#endif
+	case CCM:
+	case GCM:
+#if IMB_VERSION(0, 54, 3) <= IMB_VERSION_NUM
+	case IMB_CIPHER_CHACHA20_POLY1305:
 #endif
+		job->cipher_start_src_offset_in_bytes =
+				op->sym->aead.data.offset;
+		job->msg_len_to_cipher_in_bytes = op->sym->aead.data.length;
+		break;
+	default:
+		job->cipher_start_src_offset_in_bytes =
+					op->sym->cipher.data.offset;
+		job->msg_len_to_cipher_in_bytes = op->sym->cipher.data.length;
+	}
 
 	/* Set user data to be crypto operation data struct */
 	job->user_data = op;
-- 
2.25.1