[EXT] [PATCH] cryptodev: add support for 25519 and 448 curves

[Akhil Goyal]

> This commit adds support for following elliptic curves:
> 1) Curve25519
> 2) Curve448
> 
> Signed-off-by: Arek Kusztal <arkadiuszx.kusztal at intel.com>
> ---
>  lib/cryptodev/rte_crypto_asym.h | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/lib/cryptodev/rte_crypto_asym.h b/lib/cryptodev/rte_crypto_asym.h
> index cd24d4b07b..775b2f6277 100644
> --- a/lib/cryptodev/rte_crypto_asym.h
> +++ b/lib/cryptodev/rte_crypto_asym.h
> @@ -48,6 +48,8 @@ enum rte_crypto_ec_group {
>  	RTE_CRYPTO_EC_GROUP_SECP256R1 = 23,
>  	RTE_CRYPTO_EC_GROUP_SECP384R1 = 24,
>  	RTE_CRYPTO_EC_GROUP_SECP521R1 = 25,
> +	RTE_CRYPTO_EC_GROUP_CURVE25519 = 29,
> +	RTE_CRYPTO_EC_GROUP_CURVE448 = 30,
>  };
> 
>  /**
> @@ -180,9 +182,17 @@ typedef rte_crypto_param rte_crypto_uint;
>   */
>  struct rte_crypto_ec_point {
>  	rte_crypto_param x;
> -	/**< X coordinate */
> +	/**<
> +	 * X coordinate
> +	 * For curve25519 and curve448 - little-endian integer
> +	 * otherwise, big-endian integer
> +	 */
>  	rte_crypto_param y;
> -	/**< Y coordinate */
> +	/**<
> +	 * Y coordinate
> +	 * For curve25519 and curve448 - little-endian integer
> +	 * otherwise, big-endian integer
> +	 */
Can you give reference of the document which specify this endianness?

And if it is implicit as per the protocol, do we need to add explicit comments here?