[dpdk-stable] [dpdk-dev] [PATCH 1/2] examples/ip_pipeline: fix crypto queue config

[Dumitrescu, Cristian]

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Hemant Agrawal
> Sent: Wednesday, December 11, 2019 5:26 AM
> To: dev at dpdk.org
> Cc: Dumitrescu, Cristian <cristian.dumitrescu at intel.com>; stable at dpdk.org;
> Jun Yang <jun.yang at nxp.com>; Hemant Agrawal
> <hemant.agrawal at nxp.com>
> Subject: [dpdk-dev] [PATCH 1/2] examples/ip_pipeline: fix crypto queue
> config
> 
> queue_conf need to have mempool details before pair setup.
> 
> Fixes: 261bbff75e34 ("examples: use separate crypto session mempools")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Jun Yang <jun.yang at nxp.com>
> Signed-off-by: Hemant Agrawal <hemant.agrawal at nxp.com>
> ---
>  examples/ip_pipeline/cryptodev.c | 24 +++++++++++++-----------
>  1 file changed, 13 insertions(+), 11 deletions(-)
> 
> diff --git a/examples/ip_pipeline/cryptodev.c
> b/examples/ip_pipeline/cryptodev.c
> index b0d9f3d217..ae65a90859 100644
> --- a/examples/ip_pipeline/cryptodev.c
> +++ b/examples/ip_pipeline/cryptodev.c
> @@ -99,17 +99,6 @@ cryptodev_create(const char *name, struct
> cryptodev_params *params)
>  	if (status < 0)
>  		return NULL;
> 
> -	queue_conf.nb_descriptors = params->queue_size;
> -	for (i = 0; i < params->n_queues; i++) {
> -		status = rte_cryptodev_queue_pair_setup(dev_id, i,
> -				&queue_conf, socket_id);
> -		if (status < 0)
> -			return NULL;
> -	}
> -
> -	if (rte_cryptodev_start(dev_id) < 0)
> -		return NULL;
> -
>  	cryptodev = calloc(1, sizeof(struct cryptodev));
>  	if (cryptodev == NULL) {
>  		rte_cryptodev_stop(dev_id);
> @@ -149,6 +138,19 @@ cryptodev_create(const char *name, struct
> cryptodev_params *params)
> 
>  	TAILQ_INSERT_TAIL(&cryptodev_list, cryptodev, node);
> 
> +	queue_conf.nb_descriptors = params->queue_size;
> +	queue_conf.mp_session = cryptodev->mp_create;
> +	queue_conf.mp_session_private = cryptodev->mp_init;
> +	for (i = 0; i < params->n_queues; i++) {
> +		status = rte_cryptodev_queue_pair_setup(dev_id, i,
> +				&queue_conf, socket_id);
> +		if (status < 0)
> +			goto error_exit;
> +	}
> +
> +	if (rte_cryptodev_start(dev_id) < 0)
> +		goto error_exit;
> +
>  	return cryptodev;
> 
>  error_exit:
> --
> 2.17.1

Idea is correct, implementation is broken, so rework is needed.

The cryptodev->mp_create and cryptodev->mp_init are not valid at this point where you assign them to queue_conf.mp_session and queue_conf.mp_session_private, as they only get created later in this same function. Please fix.