[dpdk-dev] [PATCH] crypto/ipsec_mb: support ZUC-256

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

Add support for ZUC-EEA3-256 and ZUC-EIA3-256
(only 4-byte tags supported for now).

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---

This patch depends on patchset https://patches.dpdk.org/project/dpdk/list/?series=18470

---

 doc/guides/cryptodevs/aesni_mb.rst     |  1 +
 doc/guides/rel_notes/release_21_11.rst |  4 ++++
 drivers/crypto/ipsec_mb/pmd_aesni_mb.c | 18 ++++++++++--------
 3 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/doc/guides/cryptodevs/aesni_mb.rst b/doc/guides/cryptodevs/aesni_mb.rst
index 3551a0dbd7..948128ae9b 100644
--- a/doc/guides/cryptodevs/aesni_mb.rst
+++ b/doc/guides/cryptodevs/aesni_mb.rst
@@ -77,6 +77,7 @@ Limitations
   protocol.
 * RTE_CRYPTO_CIPHER_DES_DOCSISBPI is not supported for combined Crypto-CRC
   DOCSIS security protocol.
+* The only tag size supported for ZUC-EIA3-256 is 4 bytes.
 
 
 Installation
diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 3fa8018695..71380d4986 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -82,6 +82,10 @@ New Features
 
   * Added PDCP short MAC-I support.
 
+* **Updated the aesni_mb crypto PMD.**
+
+  * Added support for ZUC-EEA3-256 and ZUC-EIA3-256.
+
 
 Removed Items
 -------------
diff --git a/drivers/crypto/ipsec_mb/pmd_aesni_mb.c b/drivers/crypto/ipsec_mb/pmd_aesni_mb.c
index e05865798b..31c25e2bc7 100644
--- a/drivers/crypto/ipsec_mb/pmd_aesni_mb.c
+++ b/drivers/crypto/ipsec_mb/pmd_aesni_mb.c
@@ -526,8 +526,8 @@ static const struct rte_cryptodev_capabilities aesni_mb_capabilities[] = {
 				.block_size = 16,
 				.key_size = {
 					.min = 16,
-					.max = 16,
-					.increment = 0
+					.max = 32,
+					.increment = 16
 				},
 				.digest_size = {
 					.min = 4,
@@ -551,8 +551,8 @@ static const struct rte_cryptodev_capabilities aesni_mb_capabilities[] = {
 				.block_size = 16,
 				.key_size = {
 					.min = 16,
-					.max = 16,
-					.increment = 0
+					.max = 32,
+					.increment = 16
 				},
 				.iv_size = {
 					.min = 16,
@@ -1099,7 +1099,8 @@ aesni_mb_set_session_auth_parameters(const MB_MGR *mb_mgr,
 		}
 		sess->auth.gen_digest_len = sess->auth.req_digest_len;
 
-		memcpy(sess->auth.zuc_auth_key, xform->auth.key.data, 16);
+		memcpy(sess->auth.zuc_auth_key, xform->auth.key.data,
+			xform->auth.key.length);
 		return 0;
 	} else if (xform->auth.algo == RTE_CRYPTO_AUTH_SNOW3G_UIA2) {
 		sess->auth.algo = IMB_AUTH_SNOW3G_UIA2_BITLEN;
@@ -1427,13 +1428,14 @@ aesni_mb_set_session_cipher_parameters(const MB_MGR *mb_mgr,
 
 		sess->cipher.key_length_in_bytes = 24;
 	} else if (is_zuc) {
-		if (xform->cipher.key.length != 16) {
+		if (xform->cipher.key.length != 16 &&
+				xform->cipher.key.length != 32) {
 			IPSEC_MB_LOG(ERR, "Invalid cipher key length");
 			return -EINVAL;
 		}
-		sess->cipher.key_length_in_bytes = 16;
+		sess->cipher.key_length_in_bytes = xform->cipher.key.length;
 		memcpy(sess->cipher.zuc_cipher_key, xform->cipher.key.data,
-			16);
+			xform->cipher.key.length);
 	} else if (is_snow3g) {
 		if (xform->cipher.key.length != 16) {
 			IPSEC_MB_LOG(ERR, "Invalid cipher key length");
-- 
2.25.1