[PATCH 3/3] crypto/qat: compilation fix for GCC-12

[Amit Prakash Shukla]

GCC 12 raises the following warning:

                 from ../lib/eal/x86/include/rte_vect.h:31,
                 from ../lib/eal/x86/include/rte_memcpy.h:17,
                 from ../drivers/crypto/qat/qat_sym_session.c:10:
In function '_mm_storeu_si128',
    inlined from 'rte_mov16' at
        ../lib/eal/x86/include/rte_memcpy.h:508:2,
    inlined from 'rte_mov128' at
        ../lib/eal/x86/include/rte_memcpy.h:542:2,
    inlined from 'rte_memcpy_generic' at
        ../lib/eal/x86/include/rte_memcpy.h:732:4,
    inlined from 'rte_memcpy' at
        ../lib/eal/x86/include/rte_memcpy.h:882:10,
    inlined from 'qat_sym_do_precomputes.constprop' at
        ../drivers/crypto/qat/qat_sym_session.c:1434:2:
/usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/include/emmintrin.h:739:8: error:
        array subscript 8 is outside array bounds of 'unsigned char[128]'
        [-Werror=array-bounds]
  739 |   *__P = __B;
      |   ~~~~~^~~~~

../drivers/crypto/qat/qat_sym_session.c:
        In function 'qat_sym_do_precomputes.constprop':
../drivers/crypto/qat/qat_sym_session.c:1305:17: note:
        at offset 192 into object 'opad.750' of size 128
 1305 | uint8_t
          opad[qat_hash_get_block_size(ICP_QAT_HW_AUTH_ALGO_DELIMITER)];
      |           ^~~~

../drivers/crypto/qat/qat_sym_session.c:
        In function 'qat_sym_do_precomputes.constprop':
../drivers/crypto/qat/qat_sym_session.c:1304:17: note:
        at offset 128 into object 'ipad.749' of size 128
 1304 | uint8_t
          ipad[qat_hash_get_block_size(ICP_QAT_HW_AUTH_ALGO_DELIMITER)];
      |           ^~~~

Added a check to prevent compiler warnings.

Signed-off-by: Amit Prakash Shukla <amitpraka...@marvell.com>
---
 drivers/crypto/qat/qat_sym_session.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/crypto/qat/qat_sym_session.c 
b/drivers/crypto/qat/qat_sym_session.c
index 8ca475ca8b..4c513186d4 100644
--- a/drivers/crypto/qat/qat_sym_session.c
+++ b/drivers/crypto/qat/qat_sym_session.c
@@ -1431,6 +1431,10 @@ static int qat_sym_do_precomputes(enum 
icp_qat_hw_auth_algo hash_alg,
                QAT_LOG(ERR, "invalid keylen %u", auth_keylen);
                return -EFAULT;
        }
+
+       RTE_VERIFY(auth_keylen <= sizeof(ipad));
+       RTE_VERIFY(auth_keylen <= sizeof(opad));
+
        rte_memcpy(ipad, auth_key, auth_keylen);
        rte_memcpy(opad, auth_key, auth_keylen);
 
-- 
2.25.1