[dpdk-dev] [PATCH v2 07/11] examples/l3fwd: add service core setup based on caps
Ananyev, Konstantin
konstantin.ananyev at intel.com
Fri Jan 3 14:07:30 CET 2020
> diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
> index 20df12748..69d212bc2 100644
> --- a/examples/l3fwd/main.c
> +++ b/examples/l3fwd/main.c
> @@ -826,6 +826,93 @@ prepare_ptype_parser(uint16_t portid, uint16_t queueid)
> return 0;
> }
>
> +static inline int
> +l3fwd_service_enable(uint32_t service_id)
> +{
> + uint8_t min_service_count = UINT8_MAX;
> + uint32_t slcore_array[RTE_MAX_LCORE];
> + unsigned int slcore = 0;
> + uint8_t service_count;
> + int32_t slcore_count;
> +
> + if (!rte_service_lcore_count())
> + return -ENOENT;
> +
> + slcore_count = rte_service_lcore_list(slcore_array, RTE_MAX_LCORE);
> + if (slcore_count < 0)
> + return -ENOENT;
> + /* Get the core which has least number of services running. */
> + while (slcore_count--) {
> + /* Reset default mapping */
> + rte_service_map_lcore_set(service_id,
> + slcore_array[slcore_count], 0);
> + service_count = rte_service_lcore_count_services(
> + slcore_array[slcore_count]);
> + if (service_count < min_service_count) {
> + slcore = slcore_array[slcore_count];
> + min_service_count = service_count;
> + }
> + }
> + if (rte_service_map_lcore_set(service_id, slcore, 1))
> + return -ENOENT;
> + rte_service_lcore_start(slcore);
> +
> + return 0;
> +}
> +
> +static void
> +l3fwd_event_service_setup(void)
> +{
> + struct l3fwd_event_resources *evt_rsrc = l3fwd_get_eventdev_rsrc();
> + struct rte_event_dev_info evdev_info;
> + uint32_t service_id, caps;
> + int ret, i;
> +
> + rte_event_dev_info_get(evt_rsrc->event_d_id, &evdev_info);
> + if (evdev_info.event_dev_cap & RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED) {
> + ret = rte_event_dev_service_id_get(evt_rsrc->event_d_id,
> + &service_id);
> + if (ret != -ESRCH && ret != 0)
> + rte_exit(EXIT_FAILURE,
> + "Error in starting eventdev service\n");
> + l3fwd_service_enable(service_id);
> + }
> +
> + for (i = 0; i < evt_rsrc->rx_adptr.nb_rx_adptr; i++) {
> + ret = rte_event_eth_rx_adapter_caps_get(evt_rsrc->event_d_id,
> + evt_rsrc->rx_adptr.rx_adptr[i], &caps);
> + if (ret < 0)
> + rte_exit(EXIT_FAILURE,
> + "Failed to get Rx adapter[%d] caps\n",
> + evt_rsrc->rx_adptr.rx_adptr[i]);
> + ret = rte_event_eth_rx_adapter_service_id_get(
> + evt_rsrc->event_d_id,
> + &service_id);
> + if (ret != -ESRCH && ret != 0)
> + rte_exit(EXIT_FAILURE,
> + "Error in starting Rx adapter[%d] service\n",
> + evt_rsrc->rx_adptr.rx_adptr[i]);
> + l3fwd_service_enable(service_id);
> + }
> +
> + for (i = 0; i < evt_rsrc->tx_adptr.nb_tx_adptr; i++) {
> + ret = rte_event_eth_tx_adapter_caps_get(evt_rsrc->event_d_id,
> + evt_rsrc->tx_adptr.tx_adptr[i], &caps);
> + if (ret < 0)
> + rte_exit(EXIT_FAILURE,
> + "Failed to get Rx adapter[%d] caps\n",
> + evt_rsrc->tx_adptr.tx_adptr[i]);
> + ret = rte_event_eth_tx_adapter_service_id_get(
> + evt_rsrc->event_d_id,
> + &service_id);
> + if (ret != -ESRCH && ret != 0)
> + rte_exit(EXIT_FAILURE,
> + "Error in starting Rx adapter[%d] service\n",
> + evt_rsrc->tx_adptr.tx_adptr[i]);
> + l3fwd_service_enable(service_id);
> + }
> +}
> +
> int
> main(int argc, char **argv)
> {
> @@ -869,6 +956,8 @@ main(int argc, char **argv)
> evt_rsrc->port_mask = enabled_port_mask;
> /* Configure eventdev parameters if user has requested */
> l3fwd_event_resource_setup(&port_conf);
> + if (evt_rsrc->enabled)
> + goto skip_port_config;
Please try to avoid introducing more gotos.
If init code below is poll mode specific, let's move it int a separate function.
Then we can have something like:
If (evt_rsrc->enabled) {
...
ret = l3fwd_event_resource_setup(...);
l3fwd_event_service_setup();
...
} else
ret = l3fwd_poll_resource_setup(...);
...
>
> if (check_lcore_params() < 0)
> rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
> @@ -1054,6 +1143,7 @@ main(int argc, char **argv)
> }
> }
>
> +skip_port_config:
> printf("\n");
>
> /* start ports */
> @@ -1083,6 +1173,9 @@ main(int argc, char **argv)
> }
> }
>
> + if (evt_rsrc->enabled)
> + l3fwd_event_service_setup();
> +
> printf("\n");
>
> for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
> --
> 2.17.1
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