From: Arek Kusztal <arkadiuszx.kusztal@intel.com>
To: dev@dpdk.org
Cc: fiona.trahe@intel.com, john.griffin@intel.com,
deepak.k.jain@intel.com,
Arek Kusztal <arkadiuszx.kusztal@intel.com>
Subject: [dpdk-dev] [PATCH 1/2] qat: add aad_len variable to avoid GCC break strict-aliasing rules warning
Date: Tue, 7 Jun 2016 17:58:13 +0100 [thread overview]
Message-ID: <1465318694-20727-2-git-send-email-arkadiuszx.kusztal@intel.com> (raw)
In-Reply-To: <1465318694-20727-1-git-send-email-arkadiuszx.kusztal@intel.com>
To avoid GCC warning about "dereferencing type-punned pointer will break
strict-aliasing rules" aad_len pointer is dereferenced instead of direct
dereferencing of uint32_t* cast of the middle of an array.
Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
drivers/crypto/qat/qat_adf/qat_algs_build_desc.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c b/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
index bcccdf4..a5210d2 100644
--- a/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
+++ b/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
@@ -616,10 +616,12 @@ int qat_alg_aead_session_create_content_desc_auth(struct qat_session *cdesc,
* Write (the length of AAD) into bytes 16-19 of state2
* in big-endian format. This field is 8 bytes
*/
- *(uint32_t *)&(hash->sha.state1[
+ uint32_t *aad_len = (uint32_t *)&hash->sha.state1[
ICP_QAT_HW_GALOIS_128_STATE1_SZ +
- ICP_QAT_HW_GALOIS_H_SZ]) =
- rte_bswap32(add_auth_data_length);
+ ICP_QAT_HW_GALOIS_H_SZ];
+
+ *aad_len = rte_bswap32(add_auth_data_length);
+
proto = ICP_QAT_FW_LA_GCM_PROTO;
} else if (cdesc->qat_hash_alg == ICP_QAT_HW_AUTH_ALGO_SNOW_3G_UIA2) {
proto = ICP_QAT_FW_LA_SNOW_3G_PROTO;
--
2.1.0
next prev parent reply other threads:[~2016-06-07 16:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-07 16:58 [dpdk-dev] [PATCH 0/2] Change optimization flag for Intel QuickAssist Technology driver Makefile Arek Kusztal
2016-06-07 16:58 ` Arek Kusztal [this message]
2016-06-07 16:58 ` [dpdk-dev] [PATCH 2/2] qat: change optimization flag for Intel QuickAssist Technology Makefile Arek Kusztal
2016-06-07 17:13 ` [dpdk-dev] [PATCH 0/2] Change optimization flag for Intel QuickAssist Technology driver Makefile Jain, Deepak K
2016-06-07 19:37 ` Thomas Monjalon
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