[dpdk-dev] [PATCH 2/2] crypto/ccp: change to command line option from compile time

[De Lara Guarch, Pablo]

> -----Original Message-----
> From: Ravi Kumar [mailto:Ravi1.kumar at amd.com]
> Sent: Thursday, May 3, 2018 6:57 AM
> To: dev at dpdk.org
> Cc: De Lara Guarch, Pablo <pablo.de.lara.guarch at intel.com>;
> thomas at monjalon.net; hemant.agrawal at nxp.com
> Subject: [PATCH 2/2] crypto/ccp: change to command line option from compile
> time
> 
> CCP PMD supports authentication offload to either of CCP or CPU. The earlier
> version of patch provided this option as compile time. This patch changes this
> option from compile time to run time. User can pass "ccp_auth_opt=1" as an
> additional argument to vdev parameter to enable authentication operations on
> CPU.
> 
> Signed-off-by: Ravi Kumar <Ravi1.kumar at amd.com>

...

> +++ b/drivers/crypto/ccp/ccp_pmd_ops.c
> @@ -13,7 +13,6 @@
>  #include "ccp_crypto.h"
> 
>  static const struct rte_cryptodev_capabilities ccp_pmd_capabilities[] = { -#ifdef
> RTE_LIBRTE_PMD_CCP_CPU_AUTH
>  	{	/* MD5 HMAC */
>  		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
>  		{.sym = {
> @@ -35,7 +34,6 @@ static const struct rte_cryptodev_capabilities
> ccp_pmd_capabilities[] = {
>  			}, }
>  		}, }
>  	},
> -#endif

MD5 won't be supported unless the auth_opt is enabled.
I would suggest doing something similar to what QAT does.
You can have an array with the base capabilities and another one
for the extended ones (with MD5).
When "auth_opt" is enabled, you can have the combination of both.
When it is not, then you can just have the base capabilities.

>  	{	/* SHA1 */
>  		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
>  		{.sym = {

...

>  	RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
> -			init_params.socket_id);
> +		init_params.def_p.socket_id);
>  	RTE_LOG(INFO, PMD, "Max number of queue pairs = %d\n",
> -			init_params.max_nb_queue_pairs);
> +		init_params.def_p.max_nb_queue_pairs);
>  	RTE_LOG(INFO, PMD, "Max number of sessions = %d\n",
> -			init_params.max_nb_sessions);
> +		init_params.def_p.max_nb_sessions);
> +	RTE_LOG(INFO, PMD, "Authentication offload to %s\n",
> +		((init_params.auth_opt == 0) ? "CCP" : "CPU"));
> +	snprintf(die_num, 20, "die_num-%d", init_params.die_num);
> +	RTE_LOG(INFO, PMD, "Combining %s CCP devices\n",
> +		((init_params.die_num == -1) ? "all" : die_num));
> 
>  	rc = cryptodev_ccp_create(name, vdev, &init_params);
>  	if (rc)
> --
> 2.7.4

You are adding new parameters, so you should extend the parameters registration at the bottom of this file:

RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_CCP_PMD,
        "max_nb_queue_pairs=<int> max_nb_sessions=<int> socket_id=<int>");