[dpdk-dev] [PATCH v2 4/7] rte_sched: don't clear statistics when read

[Neil Horman]

On Wed, Feb 04, 2015 at 10:13:58PM -0800, Stephen Hemminger wrote:
> From: Stephen Hemminger <shemming at brocade.com>
> 
> Make rte_sched statistics API work like the ethernet statistics API.
> Don't auto-clear statistics.
> 
> Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> ---
>  lib/librte_sched/rte_sched.c | 30 ++++++++++++++++++++++++++++++
>  lib/librte_sched/rte_sched.h | 29 +++++++++++++++++++++++++++++
>  2 files changed, 59 insertions(+)
> 
> diff --git a/lib/librte_sched/rte_sched.c b/lib/librte_sched/rte_sched.c
> index 8cb8bf1..d891e50 100644
> --- a/lib/librte_sched/rte_sched.c
> +++ b/lib/librte_sched/rte_sched.c
> @@ -935,6 +935,21 @@ rte_sched_subport_read_stats(struct rte_sched_port *port,
>  }
>  
>  int
> +rte_sched_subport_stats_reset(struct rte_sched_port *port,
> +			      uint32_t subport_id)
> +{
> +	struct rte_sched_subport *s;
> +
> +	/* Check user parameters */
> +	if (port == NULL || subport_id >= port->n_subports_per_port)
> +		return -1;
> +
> +	s = port->subport + subport_id;
> +	memset(&s->stats, 0, sizeof(struct rte_sched_subport_stats));
> +	return 0;
> +}
> +
> +int
>  rte_sched_queue_read_stats(struct rte_sched_port *port,
>  	uint32_t queue_id,
>  	struct rte_sched_queue_stats *stats,
> @@ -963,6 +978,21 @@ rte_sched_queue_read_stats(struct rte_sched_port *port,
>  	return 0;
>  }
>  
> +int
> +rte_sched_queue_stats_reset(struct rte_sched_port *port,
> +			    uint32_t queue_id)
> +{
> +	struct rte_sched_queue_extra *qe;
> +
> +	/* Check user parameters */
> +	if (port == NULL || queue_id >= rte_sched_port_queues_per_port(port))
> +		return -1;
> +
> +	qe = port->queue_extra + queue_id;
> +	memset(&qe->stats, 0, sizeof(struct rte_sched_queue_stats));
> +	return 0;
> +}
> +
>  static inline uint32_t
>  rte_sched_port_qindex(struct rte_sched_port *port, uint32_t subport, uint32_t pipe, uint32_t traffic_class, uint32_t queue)
>  {
> diff --git a/lib/librte_sched/rte_sched.h b/lib/librte_sched/rte_sched.h
> index e9bf18a..3d007e4 100644
> --- a/lib/librte_sched/rte_sched.h
> +++ b/lib/librte_sched/rte_sched.h
> @@ -317,6 +317,21 @@ rte_sched_subport_read_stats(struct rte_sched_port *port,
>  	struct rte_sched_subport_stats *stats,
>  	uint32_t *tc_ov);
>  
> +
> +/**
> + * Hierarchical scheduler subport statistics reset
> + *
> + * @param port
> + *   Handle to port scheduler instance
> + * @param subport_id
> + *   Subport ID
> + * @return
> + *   0 upon success, error code otherwise
> + */
> +int
> +rte_sched_subport_stats_reset(struct rte_sched_port *port,
> +			      uint32_t subport_id);
> +
>  /**
>   * Hierarchical scheduler queue statistics read
>   *
> @@ -338,6 +353,20 @@ rte_sched_queue_read_stats(struct rte_sched_port *port,
>  	struct rte_sched_queue_stats *stats,
>  	uint16_t *qlen);
>  
> +/**
> + * Hierarchical scheduler queue statistics reset
> + *
> + * @param port
> + *   Handle to port scheduler instance
> + * @param queue_id
> + *   Queue ID within port scheduler
> + * @return
> + *   0 upon success, error code otherwise
> + */
> +int
> +rte_sched_queue_stats_reset(struct rte_sched_port *port,
> +			    uint32_t queue_id);
> +
Both need to be added to the version map to expose them properly.
Neil