RE: [PATCH v2 1/2] lib/cryptodev: avoid implicit conversion to 64 bit number

["Morten Brørup" <mb@smartsharesystems.com>]

> From: Andre Muezerie [mailto:andremue@linux.microsoft.com]
> Sent: Monday, 27 January 2025 17.04
> 
> MSVC issues the warning below:
> 
> ../lib/cryptodev/rte_cryptodev.c(623): warning C4334: '<<':
>     result of 32-bit shift implicitly converted to 64 bits
>     (was 64-bit shift intended?)
> 
> The code would be better off by using 64 bit numbers to begin with.
> That eliminates the need for a conversion to 64 bits later.
> 
> Signed-off-by: Andre Muezerie <andremue@linux.microsoft.com>
> Acked-by: Akhil Goyal <gakhil@marvell.com>
> ---
>  lib/cryptodev/rte_cryptodev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/cryptodev/rte_cryptodev.c
> b/lib/cryptodev/rte_cryptodev.c
> index 85a4b46ac9..a49b0662f3 100644
> --- a/lib/cryptodev/rte_cryptodev.c
> +++ b/lib/cryptodev/rte_cryptodev.c
> @@ -620,7 +620,7 @@ rte_cryptodev_asym_xform_capability_check_hash(
>  {
>  	bool ret = false;
> 
> -	if (capability->hash_algos & (1 << hash))
> +	if (capability->hash_algos & RTE_BIT64(hash))
>  		ret = true;

If I'm not mistaken, the last of the hash enums RTE_CRYPTO_AUTH_SM3_HMAC has the value 32, so this patch actually fixes a bug.
If you agree with my analysis, a Fixes tag should be added, so the patch can be backported. (RTE_CRYPTO_AUTH_SM3_HMAC also exists in previous DPDK versions.)

Furthermore, driver initializations of hash_algos should also use RTE_BIT64():
https://elixir.bootlin.com/dpdk/v24.11.1/C/ident/hash_algos
Specifically, OpenSSL and CNXK crypto drivers have the same bug, and need to be fixed too:
https://elixir.bootlin.com/dpdk/v24.11.1/source/drivers/crypto/openssl/rte_openssl_pmd_ops.c#L633
https://elixir.bootlin.com/dpdk/v24.11.1/source/drivers/crypto/cnxk/cnxk_cryptodev_capabilities.c#L1210

With Fixes tag added,
Reviewed-by: Morten Brørup <mb@smartsharesystems.com>