[PATCH v2 2/7] common/cnxk: fix salt handling with aes-ctr

Tejasree Kondoj ktejasree at marvell.com
Mon Jun 9 12:40:33 CEST 2025


From: Nithinsen Kaithakadan <nkaithakadan at marvell.com>

This patch includes fix for setting correct salt value
for CTR algorithm.

Fixes: 78d03027f2cc ("common/cnxk: add IPsec common code")
Fixes: 532963b8070 ("crypto/cnxk: move IPsec SA creation to common")
Cc: stable at dpdk.org

Signed-off-by: Nithinsen Kaithakadan <nkaithakadan at marvell.com>
Signed-off-by: Tejasree Kondoj <ktejasree at marvell.com>
---
 drivers/common/cnxk/cnxk_security.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/common/cnxk/cnxk_security.c b/drivers/common/cnxk/cnxk_security.c
index ea3b87e65c..0e6777e6ca 100644
--- a/drivers/common/cnxk/cnxk_security.c
+++ b/drivers/common/cnxk/cnxk_security.c
@@ -96,6 +96,9 @@ ot_ipsec_sa_common_param_fill(union roc_ot_ipsec_sa_word2 *w2, uint8_t *cipher_k
 				break;
 			case RTE_CRYPTO_CIPHER_AES_CTR:
 				w2->s.enc_type = ROC_IE_SA_ENC_AES_CTR;
+				memcpy(salt_key, &ipsec_xfrm->salt, 4);
+				tmp_salt = (uint32_t *)salt_key;
+				*tmp_salt = rte_be_to_cpu_32(*tmp_salt);
 				break;
 			case RTE_CRYPTO_CIPHER_3DES_CBC:
 				w2->s.enc_type = ROC_IE_SA_ENC_3DES_CBC;
@@ -962,6 +965,8 @@ on_fill_ipsec_common_sa(struct rte_security_ipsec_xform *ipsec,
 		cipher_key_len = crypto_xform->aead.key.length;
 	} else {
 		if (cipher_xform) {
+			if (cipher_xform->cipher.algo == RTE_CRYPTO_CIPHER_AES_CTR)
+				memcpy(common_sa->iv.gcm.nonce, &ipsec->salt, 4);
 			cipher_key = cipher_xform->cipher.key.data;
 			cipher_key_len = cipher_xform->cipher.key.length;
 		}
@@ -1282,6 +1287,9 @@ ow_ipsec_sa_common_param_fill(union roc_ow_ipsec_sa_word2 *w2, uint8_t *cipher_k
 				break;
 			case RTE_CRYPTO_CIPHER_AES_CTR:
 				w2->s.enc_type = ROC_IE_SA_ENC_AES_CTR;
+				memcpy(salt_key, &ipsec_xfrm->salt, 4);
+				tmp_salt = (uint32_t *)salt_key;
+				*tmp_salt = rte_be_to_cpu_32(*tmp_salt);
 				break;
 			case RTE_CRYPTO_CIPHER_3DES_CBC:
 				w2->s.enc_type = ROC_IE_SA_ENC_3DES_CBC;
-- 
2.25.1



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