From: Vakul Garg <vakul.garg@nxp.com>
Date: Wed, 6 Nov 2019 05:17:30 +0000 (+0530)
Subject: crypto/dpaax_sec: use AES-CTR initial counter as 1
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=5906b0ad0f7550a14d6c4c7dbcb6919a5352007f;p=dpdk.git

crypto/dpaax_sec: use AES-CTR initial counter as 1

As per RFC3686, the initial aes-ctr counter value should be '1' for use
in ipsec. The patches changes SEC descriptor for using correct counter
value. In addition, it drops a redundant parameter for passing IV while
creating the descriptor.

This patch adds changes for all NXP crypto PMDs

Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
---

diff --git a/drivers/common/dpaax/caamflib/desc/algo.h b/drivers/common/dpaax/caamflib/desc/algo.h
index 83dbb80ce4..345bb5b3f9 100644
--- a/drivers/common/dpaax/caamflib/desc/algo.h
+++ b/drivers/common/dpaax/caamflib/desc/algo.h
@@ -289,12 +289,12 @@ cnstr_shdsc_snow_f9(uint32_t *descbuf, bool ps, bool swap,
 static inline int
 cnstr_shdsc_blkcipher(uint32_t *descbuf, bool ps, bool swap,
 		      enum rta_share_type share,
-		      struct alginfo *cipherdata, uint8_t *iv,
+		      struct alginfo *cipherdata,
 		      uint32_t ivlen, uint8_t dir)
 {
 	struct program prg;
 	struct program *p = &prg;
-	uint32_t iv_off = 0;
+	uint32_t iv_off = 0, counter;
 	const bool need_dk = (dir == DIR_DEC) &&
 			     (cipherdata->algtype == OP_ALG_ALGSEL_AES) &&
 			     (cipherdata->algmode == OP_ALG_AAI_CBC);
@@ -336,12 +336,17 @@ cnstr_shdsc_blkcipher(uint32_t *descbuf, bool ps, bool swap,
 	if (cipherdata->algmode == OP_ALG_AAI_CTR)
 		iv_off = 16;
 
-	if (iv)
-		/* IV load, convert size */
-		LOAD(p, (uintptr_t)iv, CONTEXT1, iv_off, ivlen, IMMED | COPY);
-	else
-		/* IV is present first before the actual message */
-		SEQLOAD(p, CONTEXT1, iv_off, ivlen, 0);
+	/* IV is present first before the actual message */
+	SEQLOAD(p, CONTEXT1, iv_off, ivlen, 0);
+
+	/* If IV len is less than 16 bytes, set 'counter' as 1 */
+	if (cipherdata->algmode == OP_ALG_AAI_CTR && ivlen < 16) {
+		counter = 1;
+		if (!swap)
+			counter = swab32(1);
+
+		LOAD(p, counter, CONTEXT1, (iv_off + ivlen), 16 - ivlen, IMMED);
+	}
 
 	MATHB(p, SEQINSZ, SUB, MATH2, VSEQINSZ, 4, 0);
 	MATHB(p, SEQINSZ, SUB, MATH2, VSEQOUTSZ, 4, 0);
diff --git a/drivers/crypto/caam_jr/caam_jr.c b/drivers/crypto/caam_jr/caam_jr.c
index d1da9a64c8..8aaa3d45f6 100644
--- a/drivers/crypto/caam_jr/caam_jr.c
+++ b/drivers/crypto/caam_jr/caam_jr.c
@@ -336,7 +336,6 @@ caam_jr_prep_cdb(struct caam_jr_session *ses)
 		shared_desc_len = cnstr_shdsc_blkcipher(
 						cdb->sh_desc, true,
 						swap, SHR_NEVER, &alginfo_c,
-						NULL,
 						ses->iv.length,
 						ses->dir);
 	} else if (is_auth_only(ses)) {
diff --git a/drivers/crypto/dpaa2_sec/dpaa2_sec_dpseci.c b/drivers/crypto/dpaa2_sec/dpaa2_sec_dpseci.c
index c6af3a4715..3150ca4a17 100644
--- a/drivers/crypto/dpaa2_sec/dpaa2_sec_dpseci.c
+++ b/drivers/crypto/dpaa2_sec/dpaa2_sec_dpseci.c
@@ -1858,7 +1858,7 @@ dpaa2_sec_cipher_init(struct rte_cryptodev *dev,
 		cipherdata.algmode = OP_ALG_AAI_CBC;
 		session->cipher_alg = RTE_CRYPTO_CIPHER_AES_CBC;
 		bufsize = cnstr_shdsc_blkcipher(priv->flc_desc[0].desc, 1, 0,
-						SHR_NEVER, &cipherdata, NULL,
+						SHR_NEVER, &cipherdata,
 						session->iv.length,
 						session->dir);
 		break;
@@ -1867,7 +1867,7 @@ dpaa2_sec_cipher_init(struct rte_cryptodev *dev,
 		cipherdata.algmode = OP_ALG_AAI_CBC;
 		session->cipher_alg = RTE_CRYPTO_CIPHER_3DES_CBC;
 		bufsize = cnstr_shdsc_blkcipher(priv->flc_desc[0].desc, 1, 0,
-						SHR_NEVER, &cipherdata, NULL,
+						SHR_NEVER, &cipherdata,
 						session->iv.length,
 						session->dir);
 		break;
@@ -1876,7 +1876,7 @@ dpaa2_sec_cipher_init(struct rte_cryptodev *dev,
 		cipherdata.algmode = OP_ALG_AAI_CTR;
 		session->cipher_alg = RTE_CRYPTO_CIPHER_AES_CTR;
 		bufsize = cnstr_shdsc_blkcipher(priv->flc_desc[0].desc, 1, 0,
-						SHR_NEVER, &cipherdata, NULL,
+						SHR_NEVER, &cipherdata,
 						session->iv.length,
 						session->dir);
 		break;
@@ -1885,7 +1885,7 @@ dpaa2_sec_cipher_init(struct rte_cryptodev *dev,
 		cipherdata.algmode = OP_ALG_AAI_CTR;
 		session->cipher_alg = RTE_CRYPTO_CIPHER_3DES_CTR;
 		bufsize = cnstr_shdsc_blkcipher(priv->flc_desc[0].desc, 1, 0,
-						SHR_NEVER, &cipherdata, NULL,
+						SHR_NEVER, &cipherdata,
 						session->iv.length,
 						session->dir);
 		break;
diff --git a/drivers/crypto/dpaa_sec/dpaa_sec.c b/drivers/crypto/dpaa_sec/dpaa_sec.c
index dcd03997fd..dc528eed30 100644
--- a/drivers/crypto/dpaa_sec/dpaa_sec.c
+++ b/drivers/crypto/dpaa_sec/dpaa_sec.c
@@ -478,7 +478,6 @@ dpaa_sec_prep_cdb(dpaa_sec_session *ses)
 			shared_desc_len = cnstr_shdsc_blkcipher(
 					cdb->sh_desc, true,
 					swap, SHR_NEVER, &alginfo_c,
-					NULL,
 					ses->iv.length,
 					ses->dir);
 			break;