[PATCH v1 01/24] net/ntnic: introduce service API for NTNIC PMD

[Thomas Monjalon]

20/10/2025 18:35, Serhii Iliushyk:
> --- a/doc/guides/nics/ntnic.rst
> +++ b/doc/guides/nics/ntnic.rst
> @@ -185,3 +185,115 @@ There are list of characteristics that age timeout action has:
>  - after flow is aged-out it's not automatically deleted;
>  - aged-out flow can be updated with ``flow update`` command,
>    and its aged-out status will be reverted;
> +
> +Service API
> +-----------
> +
> +**nthw_service_add**
> +**nthw_service_del**
> +**nthw_service_get_info**
> +
> +The NTNIC PMD provides a service API that allows applications to configure services
> +
> +The services are responsible for handling the vital functionality of the NTNIC PMD:
> +
> +- **FLM Update**: is responsible for creating and destroying flows;
> +- **Statistics**: is responsible for collecting statistics;
> +- **Port event**: is responsible for handling port events: aging, port load, and flow load;
> +- **Adapter monitor** is responsible for link control;
> +
> +**NOTE**: Use next EAL options to configure set service cores
> +   * -s SERVICE COREMASK Hexadecimal bitmask of cores to be used as service cores;
> +   * -S SERVICE CORELIST List of cores to run services on;
> +
> +**NOTE**: **At least 5 lcores must be reserved** for the ntnic services by EAL options. above.
> +
> +For example
> +
> +.. code-block:: console
> +
> +   dpdk-testpmd -S 8,9,10,11,12
> +
> +The PMD registers each service during initialization by function:
> +
> +.. code-block:: c
> +
> +   int nthw_service_add(struct rte_service_spec *srv_spec, const enum rte_ntnic_service_tag tag)
> +
> +and unregistered by the PMD during deinitialization by the function:
> +
> +.. code-block:: c
> +
> +   int nthw_service_del(const enum rte_ntnic_service_tag tag)
> +
> +The service info may be retrieved by function:
> +
> +.. code-block:: c
> +
> +   struct nt_service *nthw_service_get_info(const enum rte_ntnic_service_tag tag)
> +
> +The service info includes the service ID, assigned lcore, and initialization state.
> +
> +Service API for user applications
> +---------------------------------
> +**rte_pmd_ntnic_service_set_lcore**
> +**rte_pmd_ntnic_service_get_id**
> +
> +The exported service API is available for applications to configure the services.
> +
> +By API function:
> +
> +.. code-block:: c
> +
> +   int rte_pmd_ntnic_service_set_lcore(enum rte_ntnic_service_tag tag, uint32_t lcore_id)
> +
> +For example to assign lcores 8,9,10,11,12 to the services, the application can use:
> +
> +.. code-block:: c
> +
> +   rte_pmd_ntnic_service_set_lcore(RTE_NTNIC_SERVICE_STAT, 8);
> +   rte_pmd_ntnic_service_set_lcore(RTE_NTNIC_SERVICE_ADAPTER_MON, 9);
> +   rte_pmd_ntnic_service_set_lcore(RTE_NTNIC_SERVICE_PORT_0_EVENT, 10);
> +   rte_pmd_ntnic_service_set_lcore(RTE_NTNIC_SERVICE_PORT_1_EVENT,11);
> +   rte_pmd_ntnic_service_set_lcore(RTE_NTNIC_SERVICE_FLM_UPDATE, 12);
> +
> +The API will automatically lcore to service core list and map the service to the lcore.
> +
> +.. note:: Use `rte_service_lcore_start` to start the lcore after mapping it to the service.
> +
> +Each service has its own tag to identify it.
> +
> +.. code-block:: c
> +
> +   enum rte_ntnic_service_tag {
> +      RTE_NTNIC_SERVICE_FLM_UPDATE = 0,
> +      RTE_NTNIC_SERVICE_STAT = 1,
> +      RTE_NTNIC_SERVICE_PORT_0_EVENT = 2,
> +      RTE_NTNIC_SERVICE_PORT_1_EVENT = 3,
> +      RTE_NTNIC_SERVICE_ADAPTER_MON = 4,
> +      RTE_NTNIC_SERVICE_MAX
> +   };
> +
> +The application may use next API function to retrieve the service id:
> +
> +.. code-block:: c
> +
> +  int rte_pmd_ntnic_service_get_id(enum rte_ntnic_service_tag tag);
> +
> +
> +For example, to enable statistics for flm_update service, the application can use:
> +
> +.. code-block:: c
> +
> +   int flm_update_id = rte_pmd_ntnic_service_get_id(RTE_NTNIC_SERVICE_FLM_UPDATE);
> +   rte_service_set_stats_enable(flm_update_id, 1);
> +
> +All other manipulations with the service can be done with the service ID and rte_service* API.
> +
> +To use the service API, an application must have included the header file:
> +
> +.. code-block:: c
> +
> +   #include <rte_pmd_ntnic.h>
> +
> +And linked with the library: `librte_net_ntnic.so` or `librte_net_ntnic.a` for static linking.


This doc is a real mess considering formatting.
I suppose you didn't read it twice and never tried to generate HTML output.
I'll do a quick cleanup while pulling in the main branch.