[PATCH 4/4] crypto/ipsec_mb: fix length and offset settings

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

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")
Fixes: 8c835018de84 ("crypto/ipsec_mb: support ZUC-256 for aesni_mb")
Cc: pablo.de.lara.guarch@intel.com
Cc: stable@dpdk.org

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 drivers/crypto/ipsec_mb/pmd_aesni_mb.c | 120 +++++++++++++++++--------
 1 file changed, 85 insertions(+), 35 deletions(-)

diff --git a/drivers/crypto/ipsec_mb/pmd_aesni_mb.c b/drivers/crypto/ipsec_mb/pmd_aesni_mb.c
index a308d42ffa..eac8f1bd28 100644
--- a/drivers/crypto/ipsec_mb/pmd_aesni_mb.c
+++ b/drivers/crypto/ipsec_mb/pmd_aesni_mb.c
@@ -918,7 +918,9 @@ aesni_mb_set_docsis_sec_session_parameters(
 
 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;
@@ -927,7 +929,7 @@ 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 != IMB_ORDER_CIPHER_HASH)
-		return op->sym->auth.data.offset;
+		return auth_offset;
 
 	m_src = op->sym->m_src;
 	m_dst = op->sym->m_dst;
@@ -935,24 +937,24 @@ 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);
@@ -1099,6 +1101,10 @@ set_mb_job_params(IMB_JOB *job, struct ipsec_mb_qp *qp,
 	struct aesni_mb_qp_data *qp_data = ipsec_mb_get_qp_private_data(qp);
 	struct aesni_mb_session *session;
 	uint32_t m_offset, oop;
+	uint32_t auth_off_in_bytes;
+	uint32_t ciph_off_in_bytes;
+	uint32_t auth_len_in_bytes;
+	uint32_t ciph_len_in_bytes;
 
 	session = ipsec_mb_get_session_private(qp, op);
 	if (session == NULL) {
@@ -1207,6 +1213,7 @@ set_mb_job_params(IMB_JOB *job, struct ipsec_mb_qp *qp,
 	if (job->cipher_mode == IMB_CIPHER_ZUC_EEA3) {
 		job->enc_keys = session->cipher.zuc_cipher_key;
 		job->dec_keys = 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;
@@ -1264,9 +1271,6 @@ set_mb_job_params(IMB_JOB *job, struct ipsec_mb_qp *qp,
 
 	switch (job->hash_alg) {
 	case IMB_AUTH_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;
 
@@ -1276,19 +1280,11 @@ set_mb_job_params(IMB_JOB *job, struct ipsec_mb_qp *qp,
 
 	case IMB_AUTH_AES_GMAC:
 		if (session->cipher.mode == IMB_CIPHER_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;
 		}
@@ -1298,36 +1294,90 @@ set_mb_job_params(IMB_JOB *job, struct ipsec_mb_qp *qp,
 		break;
 
 	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;
 
 		job->iv = rte_crypto_op_ctod_offset(op, uint8_t *,
 				session->iv.offset);
 		break;
-	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;
 
+	/* ZUC and SNOW3G require length in bits and offset in bytes */
+	case IMB_AUTH_ZUC_EIA3_BITLEN:
+	case IMB_AUTH_ZUC256_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, 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;
+
+	default:
 		job->hash_start_src_offset_in_bytes = auth_start_offset(op,
-				session, oop);
+				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);
 	}
 
-	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;
+	switch (job->cipher_mode) {
+	/* 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;
+	case IMB_CIPHER_CCM:
+	case IMB_CIPHER_GCM:
+	case IMB_CIPHER_CHACHA20_POLY1305:
+		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_bits =
+					op->sym->cipher.data.offset;
+		job->msg_len_to_cipher_in_bits = op->sym->cipher.data.length;
+	}
 
 	/* Set user data to be crypto operation data struct */
 	job->user_data = op;
-- 
2.25.1