[dpdk-dev] [PATCH v2 12/13] crypto/dpaa2_sec: use aes-ctr initial counter as 1
Hemant Agrawal
hemant.agrawal at nxp.com
Fri Nov 1 18:51:40 CET 2019
From: Vakul Garg <vakul.garg at 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 at 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(-)
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 4a1887c4c..7368fc248 100644
--- a/drivers/crypto/dpaa2_sec/dpaa2_sec_dpseci.c
+++ b/drivers/crypto/dpaa2_sec/dpaa2_sec_dpseci.c
@@ -1861,7 +1861,7 @@ 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;
@@ -1870,7 +1870,7 @@ 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;
@@ -1879,7 +1879,7 @@ 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;
@@ -1888,7 +1888,7 @@ 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 f7c5b5183..c52593746 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;
--
2.17.1
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