Re: [dpdk-dev] [PATCH v4] eventdev/rx_adapter: add telemetry callbacks

["Naga Harish K, S V" <s.v.naga.harish.k@intel.com>]

Acked-by: Naga Harish K S V <s.v.naga.harish.k@intel.com>

> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Ganapati Kundapura
> Sent: Wednesday, October 13, 2021 1:27 PM
> To: jerinjacobk@gmail.com; dev@dpdk.org
> Cc: Jayatheerthan, Jay <jay.jayatheerthan@intel.com>
> Subject: [dpdk-dev] [PATCH v4] eventdev/rx_adapter: add telemetry
> callbacks
> 
> Added telemetry callbacks to get Rx adapter stats, reset stats and to get Rx
> queue config information.
> 
> Acked-by: Jay Jayatheerthan <jay.jayatheerthan@intel.com>
> 
> Signed-off-by: Ganapati Kundapura <ganapati.kundapura@intel.com>
> ---
> v4:
> * Addressed segfault when per Rx queue event buffer is used.
> 
> v3:
> * Updated release notes.
> * Addressed review comments.
> 
> v2:
> * Fixed checkpatch warning.
> ---
> 
> diff --git a/doc/guides/rel_notes/release_21_11.rst
> b/doc/guides/rel_notes/release_21_11.rst
> index dfc2cbd..9955e52 100644
> --- a/doc/guides/rel_notes/release_21_11.rst
> +++ b/doc/guides/rel_notes/release_21_11.rst
> @@ -130,6 +130,10 @@ New Features
>    * Added tests to validate packets hard expiry.
>    * Added tests to verify tunnel header verification in IPsec inbound.
> 
> +* **Updated rte_event_eth_rx_adapter_stats structure
> +  * Added 'uint64_t rx_event_buf_count'
> +  * Added 'uint64_t rx_event_buf_size'
> +
> 
>  Removed Items
>  -------------
> diff --git a/lib/eventdev/rte_event_eth_rx_adapter.c
> b/lib/eventdev/rte_event_eth_rx_adapter.c
> index 9ac976c..bd68b8e 100644
> --- a/lib/eventdev/rte_event_eth_rx_adapter.c
> +++ b/lib/eventdev/rte_event_eth_rx_adapter.c
> @@ -18,6 +18,7 @@
>  #include <rte_thash.h>
>  #include <rte_interrupts.h>
>  #include <rte_mbuf_dyn.h>
> +#include <rte_telemetry.h>
> 
>  #include "rte_eventdev.h"
>  #include "eventdev_pmd.h"
> @@ -2852,6 +2853,7 @@ rte_event_eth_rx_adapter_stats_get(uint8_t id,
>  			       struct rte_event_eth_rx_adapter_stats *stats)  {
>  	struct rte_event_eth_rx_adapter *rx_adapter;
> +	struct rte_eth_event_enqueue_buffer *buf;
>  	struct rte_event_eth_rx_adapter_stats dev_stats_sum = { 0 };
>  	struct rte_event_eth_rx_adapter_stats dev_stats;
>  	struct rte_eventdev *dev;
> @@ -2890,6 +2892,15 @@ rte_event_eth_rx_adapter_stats_get(uint8_t id,
>  	stats->rx_packets += dev_stats_sum.rx_packets;
>  	stats->rx_enq_count += dev_stats_sum.rx_enq_count;
> 
> +	if (!rx_adapter->use_queue_event_buf) {
> +		buf = &rx_adapter->event_enqueue_buffer;
> +		stats->rx_event_buf_count = buf->count;
> +		stats->rx_event_buf_size = buf->events_size;
> +	} else {
> +		stats->rx_event_buf_count = 0;
> +		stats->rx_event_buf_size = 0;
> +	}
> +
>  	return 0;
>  }
> 
> @@ -3052,3 +3063,146 @@
> rte_event_eth_rx_adapter_queue_conf_get(uint8_t id,
> 
>  	return 0;
>  }
> +
> +#define RXA_ADD_DICT(stats, s) rte_tel_data_add_dict_u64(d, #s,
> +stats.s)
> +
> +static int
> +handle_rxa_stats(const char *cmd __rte_unused,
> +		 const char *params,
> +		 struct rte_tel_data *d)
> +{
> +	uint8_t rx_adapter_id;
> +	struct rte_event_eth_rx_adapter_stats rx_adptr_stats;
> +
> +	if (params == NULL || strlen(params) == 0 || !isdigit(*params))
> +		return -1;
> +
> +	/* Get Rx adapter ID from parameter string */
> +	rx_adapter_id = atoi(params);
> +
> 	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(rx_adapter
> _id, -EINVAL);
> +
> +	/* Get Rx adapter stats */
> +	if (rte_event_eth_rx_adapter_stats_get(rx_adapter_id,
> +					       &rx_adptr_stats)) {
> +		RTE_EDEV_LOG_ERR("Failed to get Rx adapter stats\n");
> +		return -1;
> +	}
> +
> +	rte_tel_data_start_dict(d);
> +	rte_tel_data_add_dict_u64(d, "rx_adapter_id", rx_adapter_id);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_packets);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_poll_count);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_dropped);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_enq_retry);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_event_buf_count);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_event_buf_size);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_enq_count);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_enq_start_ts);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_enq_block_cycles);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_enq_end_ts);
> +	RXA_ADD_DICT(rx_adptr_stats, rx_intr_packets);
> +
> +	return 0;
> +}
> +
> +static int
> +handle_rxa_stats_reset(const char *cmd __rte_unused,
> +		       const char *params,
> +		       struct rte_tel_data *d __rte_unused) {
> +	uint8_t rx_adapter_id;
> +
> +	if (params == NULL || strlen(params) == 0 || ~isdigit(*params))
> +		return -1;
> +
> +	/* Get Rx adapter ID from parameter string */
> +	rx_adapter_id = atoi(params);
> +
> 	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(rx_adapter
> _id, -EINVAL);
> +
> +	/* Reset Rx adapter stats */
> +	if (rte_event_eth_rx_adapter_stats_reset(rx_adapter_id)) {
> +		RTE_EDEV_LOG_ERR("Failed to reset Rx adapter stats\n");
> +		return -1;
> +	}
> +
> +	return 0;
> +}
> +
> +static int
> +handle_rxa_get_queue_conf(const char *cmd __rte_unused,
> +			  const char *params,
> +			  struct rte_tel_data *d)
> +{
> +	uint8_t rx_adapter_id;
> +	uint16_t rx_queue_id;
> +	int eth_dev_id;
> +	char *token, *l_params;
> +	struct rte_event_eth_rx_adapter_queue_conf queue_conf;
> +
> +	if (params == NULL || strlen(params) == 0 || !isdigit(*params))
> +		return -1;
> +
> +	/* Get Rx adapter ID from parameter string */
> +	l_params = strdup(params);
> +	token = strtok(l_params, ",");
> +	rx_adapter_id = strtoul(token, NULL, 10);
> +
> 	RTE_EVENT_ETH_RX_ADAPTER_ID_VALID_OR_ERR_RET(rx_adapter
> _id, -EINVAL);
> +
> +	token = strtok(NULL, ",");
> +	if (token == NULL || strlen(token) == 0 || !isdigit(*token))
> +		return -1;
> +
> +	/* Get device ID from parameter string */
> +	eth_dev_id = strtoul(token, NULL, 10);
> +	RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(eth_dev_id, -EINVAL);
> +
> +	token = strtok(NULL, ",");
> +	if (token == NULL || strlen(token) == 0 || !isdigit(*token))
> +		return -1;
> +
> +	/* Get Rx queue ID from parameter string */
> +	rx_queue_id = strtoul(token, NULL, 10);
> +	if (rx_queue_id >= rte_eth_devices[eth_dev_id].data-
> >nb_rx_queues) {
> +		RTE_EDEV_LOG_ERR("Invalid rx queue_id %u",
> rx_queue_id);
> +		return -EINVAL;
> +	}
> +
> +	token = strtok(NULL, "\0");
> +	if (token != NULL)
> +		RTE_EDEV_LOG_ERR("Extra parameters passed to eventdev"
> +				 " telemetry command, igrnoring");
> +
> +	if (rte_event_eth_rx_adapter_queue_conf_get(rx_adapter_id,
> eth_dev_id,
> +						    rx_queue_id,
> &queue_conf)) {
> +		RTE_EDEV_LOG_ERR("Failed to get Rx adapter queue
> config");
> +		return -1;
> +	}
> +
> +	rte_tel_data_start_dict(d);
> +	rte_tel_data_add_dict_u64(d, "rx_adapter_id", rx_adapter_id);
> +	rte_tel_data_add_dict_u64(d, "eth_dev_id", eth_dev_id);
> +	rte_tel_data_add_dict_u64(d, "rx_queue_id", rx_queue_id);
> +	RXA_ADD_DICT(queue_conf, rx_queue_flags);
> +	RXA_ADD_DICT(queue_conf, servicing_weight);
> +	RXA_ADD_DICT(queue_conf.ev, queue_id);
> +	RXA_ADD_DICT(queue_conf.ev, sched_type);
> +	RXA_ADD_DICT(queue_conf.ev, priority);
> +	RXA_ADD_DICT(queue_conf.ev, flow_id);
> +
> +	return 0;
> +}
> +
> +RTE_INIT(rxa_init_telemetry)
> +{
> +	rte_telemetry_register_cmd("/eventdev/rxa_stats",
> +		handle_rxa_stats,
> +		"Returns Rx adapter stats. Parameter: rxa_id");
> +
> +	rte_telemetry_register_cmd("/eventdev/rxa_stats_reset",
> +		handle_rxa_stats_reset,
> +		"Reset Rx adapter stats. Parameter: rxa_id");
> +
> +	rte_telemetry_register_cmd("/eventdev/rxa_queue_conf",
> +		handle_rxa_get_queue_conf,
> +		"Returns Rx queue config. Parameter: rxa_id, dev_id,
> queue_id"); }
> diff --git a/lib/eventdev/rte_event_eth_rx_adapter.h
> b/lib/eventdev/rte_event_eth_rx_adapter.h
> index 70ca427..c4257e7 100644
> --- a/lib/eventdev/rte_event_eth_rx_adapter.h
> +++ b/lib/eventdev/rte_event_eth_rx_adapter.h
> @@ -232,6 +232,10 @@ struct rte_event_eth_rx_adapter_stats {
>  	 */
>  	uint64_t rx_intr_packets;
>  	/**< Received packet count for interrupt mode Rx queues */
> +	uint64_t rx_event_buf_count;
> +	/**< Rx event buffered count */
> +	uint64_t rx_event_buf_size;
> +	/**< Rx event buffer size */
>  };
> 
>  /**
> --
> 2.6.4