[v12,4/6] eventdev/eth_tx: add instance get API

  Added rte_event_eth_tx_adapter_instance_get() to get the
adapter instance id for specified ethernet device id and
tx queue index.

Added rte_event_eth_tx_adapter_instance_get() details in
prog_guide/event_ethernet_tx_adapter.rst

Signed-off-by: Ganapati Kundapura <ganapati.kundapura@intel.com>

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

On Mon, Aug 29, 2022 at 1:45 PM Ganapati Kundapura
<ganapati.kundapura@intel.com> wrote:
>
> Added rte_event_eth_tx_adapter_instance_get() to get the
> adapter instance id for specified ethernet device id and
> tx queue index.
>
> Added rte_event_eth_tx_adapter_instance_get() details in
> prog_guide/event_ethernet_tx_adapter.rst
>
> Signed-off-by: Ganapati Kundapura <ganapati.kundapura@intel.com>
>
> Reviewed-by: Naga Harish K S V <s.v.naga.harish.k@intel.com>
> Acked-by: Jay Jayatheerthan <jay.jayatheerthan@intel.com>


Acked-by: Jerin Jacob <jerinj@marvell.com>

>
> diff --git a/doc/guides/prog_guide/event_ethernet_tx_adapter.rst b/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
> index f80d226..4da9bcd 100644
> --- a/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
> +++ b/doc/guides/prog_guide/event_ethernet_tx_adapter.rst
> @@ -165,6 +165,12 @@ in struct ``rte_event_eth_tx_adapter_stats``. The counter values are the sum of
>  the counts from the eventdev PMD callback if the callback is supported, and
>  the counts maintained by the service function, if one exists.
>
> +Getting Adapter instance id
> +~~~~~~~~~~~~~~~~~~~~~~~~~~~
> +
> +The  ``rte_event_eth_tx_adapter_instance_get()`` function reports
> +tx adapter instance id for a specified ethernet device id and tx queue index.
> +
>  Tx event vectorization
>  ~~~~~~~~~~~~~~~~~~~~~~
>
> diff --git a/lib/eventdev/eventdev_pmd.h b/lib/eventdev/eventdev_pmd.h
> index c58ba05..f514a37 100644
> --- a/lib/eventdev/eventdev_pmd.h
> +++ b/lib/eventdev/eventdev_pmd.h
> @@ -1274,6 +1274,27 @@ typedef int (*eventdev_eth_tx_adapter_stats_get_t)(
>  typedef int (*eventdev_eth_tx_adapter_stats_reset_t)(uint8_t id,
>                                         const struct rte_eventdev *dev);
>
> +/**
> + * Get TX adapter instance id for TX queue
> + *
> + * @param eth_dev_id
> + *  Port identifier of Ethernet device
> + *
> + * @param tx_queue_id
> + *  Ethernet device TX queue index
> + *
> + * @param[out] txa_inst_id
> + *  Pointer to TX adapter instance identifier
> + *  Contains valid Tx adapter instance id when return value is 0
> + *
> + * @return
> + *  -  0: Success
> + *  - <0: Error code on failure
> + */
> +typedef int (*eventdev_eth_tx_adapter_instance_get_t)
> +       (uint16_t eth_dev_id, uint16_t tx_queue_id, uint8_t *txa_inst_id);
> +
> +
>  /** Event device operations function pointer table */
>  struct eventdev_ops {
>         eventdev_info_get_t dev_infos_get;      /**< Get device info. */
> @@ -1386,6 +1407,8 @@ struct eventdev_ops {
>         /**< Get eth Tx adapter statistics */
>         eventdev_eth_tx_adapter_stats_reset_t eth_tx_adapter_stats_reset;
>         /**< Reset eth Tx adapter statistics */
> +       eventdev_eth_tx_adapter_instance_get_t eth_tx_adapter_instance_get;
> +       /**< Get Tx adapter instance id for Tx queue */
>
>         eventdev_selftest dev_selftest;
>         /**< Start eventdev Selftest */
> diff --git a/lib/eventdev/rte_event_eth_tx_adapter.c b/lib/eventdev/rte_event_eth_tx_adapter.c
> index b4b37f1..aaef352 100644
> --- a/lib/eventdev/rte_event_eth_tx_adapter.c
> +++ b/lib/eventdev/rte_event_eth_tx_adapter.c
> @@ -18,6 +18,9 @@
>  #define TXA_INVALID_DEV_ID     INT32_C(-1)
>  #define TXA_INVALID_SERVICE_ID INT64_C(-1)
>
> +#define TXA_ADAPTER_ARRAY "txa_adapter_array"
> +#define TXA_SERVICE_DATA_ARRAY "txa_service_data_array"
> +
>  #define txa_evdev(id) (&rte_eventdevs[txa_dev_id_array[(id)]])
>
>  #define txa_dev_caps_get(id) txa_evdev((id))->dev_ops->eth_tx_adapter_caps_get
> @@ -41,6 +44,9 @@
>
>  #define txa_dev_stats_get(t) txa_evdev(t)->dev_ops->eth_tx_adapter_stats_get
>
> +#define txa_dev_instance_get(id) \
> +                       txa_evdev(id)->dev_ops->eth_tx_adapter_instance_get
> +
>  #define RTE_EVENT_ETH_TX_ADAPTER_ID_VALID_OR_ERR_RET(id, retval) \
>  do { \
>         if (!txa_valid_id(id)) { \
> @@ -194,12 +200,34 @@ txa_memzone_array_get(const char *name, unsigned int elt_size, int nb_elems)
>  }
>
>  static int
> +txa_lookup(void)
> +{
> +       const struct rte_memzone *mz;
> +
> +       if (txa_dev_id_array == NULL) {
> +               mz = rte_memzone_lookup(TXA_ADAPTER_ARRAY);
> +               if (mz == NULL)
> +                       return -ENOMEM;
> +               txa_dev_id_array = mz->addr;
> +       }
> +
> +       if (txa_service_data_array == NULL) {
> +               mz = rte_memzone_lookup(TXA_SERVICE_DATA_ARRAY);
> +               if (mz == NULL)
> +                       return -ENOMEM;
> +               txa_service_data_array = mz->addr;
> +       }
> +
> +       return 0;
> +}
> +
> +static int
>  txa_dev_id_array_init(void)
>  {
>         if (txa_dev_id_array == NULL) {
>                 int i;
>
> -               txa_dev_id_array = txa_memzone_array_get("txa_adapter_array",
> +               txa_dev_id_array = txa_memzone_array_get(TXA_ADAPTER_ARRAY,
>                                         sizeof(int),
>                                         RTE_EVENT_ETH_TX_ADAPTER_MAX_INSTANCE);
>                 if (txa_dev_id_array == NULL)
> @@ -222,12 +250,18 @@ static int
>  txa_service_data_init(void)
>  {
>         if (txa_service_data_array == NULL) {
> +               int i;
> +
>                 txa_service_data_array =
> -                               txa_memzone_array_get("txa_service_data_array",
> +                               txa_memzone_array_get(TXA_SERVICE_DATA_ARRAY,
>                                         sizeof(*txa_service_data_array),
>                                         RTE_EVENT_ETH_TX_ADAPTER_MAX_INSTANCE);
>                 if (txa_service_data_array == NULL)
>                         return -ENOMEM;
> +
> +               /* Reset the txa service pointers */
> +               for (i = 0; i < RTE_EVENT_ETH_TX_ADAPTER_MAX_INSTANCE; i++)
> +                       txa_service_data_array[i] = NULL;
>         }
>
>         return 0;
> @@ -1222,3 +1256,67 @@ rte_event_eth_tx_adapter_stop(uint8_t id)
>         rte_eventdev_trace_eth_tx_adapter_stop(id, ret);
>         return ret;
>  }
> +
> +int
> +rte_event_eth_tx_adapter_instance_get(uint16_t eth_dev_id,
> +                                     uint16_t tx_queue_id,
> +                                     uint8_t *txa_inst_id)
> +{
> +       uint8_t id;
> +       int ret = -EINVAL;
> +       uint32_t caps;
> +       struct txa_service_data *txa;
> +
> +       if (txa_lookup())
> +               return -ENOMEM;
> +
> +       if (eth_dev_id >= rte_eth_dev_count_avail()) {
> +               RTE_EDEV_LOG_ERR("Invalid ethernet port id %u", eth_dev_id);
> +               return -EINVAL;
> +       }
> +
> +       if (tx_queue_id >= rte_eth_devices[eth_dev_id].data->nb_tx_queues) {
> +               RTE_EDEV_LOG_ERR("Invalid tx queue id %u", tx_queue_id);
> +               return -EINVAL;
> +       }
> +
> +       if (txa_inst_id == NULL) {
> +               RTE_EDEV_LOG_ERR("txa_instance_id cannot be NULL");
> +               return -EINVAL;
> +       }
> +
> +       /* Iterate through all Tx adapter instances */
> +       for (id = 0; id < RTE_EVENT_ETH_TX_ADAPTER_MAX_INSTANCE; id++) {
> +               txa = txa_service_id_to_data(id);
> +               if (!txa)
> +                       continue;
> +
> +               caps = 0;
> +               if (rte_event_eth_tx_adapter_caps_get(txa->eventdev_id,
> +                                                     eth_dev_id,
> +                                                     &caps))
> +                       continue;
> +
> +               if (caps & RTE_EVENT_ETH_TX_ADAPTER_CAP_INTERNAL_PORT) {
> +                       ret = txa_dev_instance_get(id) ?
> +                                       txa_dev_instance_get(id)(eth_dev_id,
> +                                                                tx_queue_id,
> +                                                                txa_inst_id)
> +                                                       : -EINVAL;
> +                       if (ret == 0)
> +                               return ret;
> +               } else {
> +                       struct rte_eth_dev *eth_dev;
> +
> +                       eth_dev = &rte_eth_devices[eth_dev_id];
> +
> +                       if (txa_service_is_queue_added(txa, eth_dev,
> +                                                      tx_queue_id)) {
> +                               *txa_inst_id = txa->id;
> +                               return 0;
> +                       }
> +               }
> +       }
> +
> +       return -EINVAL;
> +}
> diff --git a/lib/eventdev/rte_event_eth_tx_adapter.h b/lib/eventdev/rte_event_eth_tx_adapter.h
> index 3908c2d..9432b74 100644
> --- a/lib/eventdev/rte_event_eth_tx_adapter.h
> +++ b/lib/eventdev/rte_event_eth_tx_adapter.h
> @@ -34,6 +34,7 @@
>   *  - rte_event_eth_tx_adapter_enqueue()
>   *  - rte_event_eth_tx_adapter_event_port_get()
>   *  - rte_event_eth_tx_adapter_service_id_get()
> + *  - rte_event_eth_tx_adapter_instance_get()
>   *
>   * The application creates the adapter using
>   * rte_event_eth_tx_adapter_create() or rte_event_eth_tx_adapter_create_ext().
> @@ -423,6 +424,29 @@ rte_event_eth_tx_adapter_stats_reset(uint8_t id);
>  int
>  rte_event_eth_tx_adapter_service_id_get(uint8_t id, uint32_t *service_id);
>
> +/**
> + * Get TX adapter instance id for TX queue
> + *
> + * @param eth_dev_id
> + *  Port identifier of Ethernet device
> + *
> + * @param tx_queue_id
> + *  Etherdev device TX queue index
> + *
> + * @param[out] txa_inst_id
> + *  Pointer to TX adapter instance identifier
> + *  Contains valid Tx adapter instance id when return value is 0
> + *
> + * @return
> + *  -  0: Success
> + *  - <0: Error code on failure
> + */
> +__rte_experimental
> +int
> +rte_event_eth_tx_adapter_instance_get(uint16_t eth_dev_id,
> +                                     uint16_t tx_queue_id,
> +                                     uint8_t *txa_inst_id);
> +
>  #ifdef __cplusplus
>  }
>  #endif
> diff --git a/lib/eventdev/version.map b/lib/eventdev/version.map
> index 0066187..9a71cf3 100644
> --- a/lib/eventdev/version.map
> +++ b/lib/eventdev/version.map
> @@ -115,6 +115,7 @@ EXPERIMENTAL {
>
>         # added in 22.11
>         rte_event_eth_rx_adapter_instance_get;
> +       rte_event_eth_tx_adapter_instance_get;
>  };
>
>  INTERNAL {
> --
> 2.6.4
>