[v3,12/13] crypto/dpaa2_sec: use aes-ctr initial counter as 1

Message ID 20191106051731.3625-12-hemant.agrawal@nxp.com
State New
Headers show
Series
  • [v3,01/13] crypto/dpaa_sec: fix to set PDCP capability flags
Related show

Commit Message

Hemant Agrawal Nov. 6, 2019, 5:17 a.m.
From: Vakul Garg <vakul.garg@nxp.com>


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.

Signed-off-by: Vakul Garg <vakul.garg@nxp.com>

---
 drivers/common/dpaax/caamflib/desc/algo.h   | 21 +++++++++++++--------
 drivers/crypto/caam_jr/caam_jr.c            |  1 -
 drivers/crypto/dpaa2_sec/dpaa2_sec_dpseci.c |  8 ++++----
 drivers/crypto/dpaa_sec/dpaa_sec.c          |  1 -
 4 files changed, 17 insertions(+), 14 deletions(-)

-- 
2.17.1

Patch

diff --git a/drivers/common/dpaax/caamflib/desc/algo.h b/drivers/common/dpaax/caamflib/desc/algo.h
index 83dbb80ce..345bb5b3f 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 d1da9a64c..8aaa3d45f 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 96753caad..46925be5f 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 990708de4..2c1915fec 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;