Hi Harish,
> -----Original Message-----
> From: Naga Harish K, S V <s.v.naga.haris...@intel.com>
> Sent: 13 October 2021 12:18
> To: Kundapura, Ganapati <ganapati.kundap...@intel.com>; Jayatheerthan, Jay
> <jay.jayatheert...@intel.com>; jerinjac...@gmail.com; dev@dpdk.org
> Cc: Kinsella, Ray <ray.kinse...@intel.com>; Thomas Monjalon
> <tho...@monjalon.net>; David Marchand <david.march...@redhat.com>
> Subject: RE: [PATCH v3] eventdev/rx_adapter: add telemetry callbacks
>
>
>
> > -----Original Message-----
> > From: Kundapura, Ganapati <ganapati.kundap...@intel.com>
> > Sent: Tuesday, October 12, 2021 9:44 PM
> > To: Naga Harish K, S V <s.v.naga.haris...@intel.com>; Jayatheerthan,
> > Jay <jay.jayatheert...@intel.com>; jerinjac...@gmail.com; dev@dpdk.org
> > Cc: Kinsella, Ray <ray.kinse...@intel.com>; Thomas Monjalon
> > <tho...@monjalon.net>; David Marchand <david.march...@redhat.com>
> > Subject: RE: [PATCH v3] eventdev/rx_adapter: add telemetry callbacks
> >
> > Hi Harish,
> >
> > > -----Original Message-----
> > > From: Naga Harish K, S V <s.v.naga.haris...@intel.com>
> > > Sent: 12 October 2021 19:36
> > > To: Jayatheerthan, Jay <jay.jayatheert...@intel.com>; Kundapura,
> > > Ganapati <ganapati.kundap...@intel.com>; jerinjac...@gmail.com;
> > > dev@dpdk.org
> > > Cc: Kinsella, Ray <ray.kinse...@intel.com>; Thomas Monjalon
> > > <tho...@monjalon.net>; David Marchand
> > <david.march...@redhat.com>
> > > Subject: RE: [PATCH v3] eventdev/rx_adapter: add telemetry callbacks
> > >
> > >
> > >
> > > > -----Original Message-----
> > > > From: dev <dev-boun...@dpdk.org> On Behalf Of Jayatheerthan, Jay
> > > > Sent: Tuesday, October 12, 2021 6:39 PM
> > > > To: Kundapura, Ganapati <ganapati.kundap...@intel.com>;
> > > > jerinjac...@gmail.com; dev@dpdk.org
> > > > Cc: Kinsella, Ray <ray.kinse...@intel.com>; Thomas Monjalon
> > > > <tho...@monjalon.net>; David Marchand
> > <david.march...@redhat.com>
> > > > Subject: Re: [dpdk-dev] [PATCH v3] eventdev/rx_adapter: add
> > > > telemetry callbacks
> > > >
> > > > Acked by: Jay Jayatheerthan <jay.jayatheert...@intel.com>
> > > >
> > > > + @Ray Kinsella @Thomas Monjalon @David Marchand
> > > >
> > > > > -----Original Message-----
> > > > > From: Kundapura, Ganapati <ganapati.kundap...@intel.com>
> > > > > Sent: Tuesday, October 12, 2021 3:55 PM
> > > > > To: jerinjac...@gmail.com; dev@dpdk.org
> > > > > Cc: Jayatheerthan, Jay <jay.jayatheert...@intel.com>
> > > > > Subject: [PATCH v3] eventdev/rx_adapter: add telemetry callbacks
> > > > >
> > > > > Added telemetry callbacks to get Rx adapter stats, reset stats
> > > > > and to get Rx queue config information.
> > > > >
> > > > > Signed-off-by: Ganapati Kundapura <ganapati.kundap...@intel.com>
> > > > > ---
> > > > > 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..7e3bf62 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;
> > > > > @@ -2887,8 +2889,11 @@
> > rte_event_eth_rx_adapter_stats_get(uint8_t
> > > > id,
> > > > > if (rx_adapter->service_inited)
> > > > > *stats = rx_adapter->stats;
> > > > >
> > > > > + buf = &rx_adapter->event_enqueue_buffer;
> > > > > stats->rx_packets += dev_stats_sum.rx_packets;
> > > > > stats->rx_enq_count += dev_stats_sum.rx_enq_count;
> > > > > + stats->rx_event_buf_count = buf->count;
> > >
> > > When per Rx queue event buffer is used, there is a possibility of
> > > segfault here Because of null pointer deference.
> > >
> > Queue_id is not passed to rte_event_eth_rx_adapter_stats_get() and
> > there's no way to retrieve the queue id to return the queue's event
> > buffer size and count. We may need to loop through all the queue's in
> > the adapter which requires changes in rte_event_eth_rx_adapter_stats
> > structure to hold event buffer size and count for all the queues.
> >
> > Alternatively stats_get() can return event buffer size and count only
> > if use_queue_event_buf = false i.e only for adapter wide event buffer.
> >
>
> This approach looks ok. When use_queue_event_buf = true, buffer size and
> count Can be returned as zero.
>
Posted new patch with the suggested changes.
> > Do we need event buffer size and count in Rx adapter stats?
> >
> > > > > + stats->rx_event_buf_size = buf->events_size;
> > > > >
> > > > > return 0;
> > > > > }
> > > > > @@ -3052,3 +3057,146 @@
> > > > > 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
