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The added function would receive an array of such workers and probes the eventmode properties to choose the worker. Signed-off-by: Anoob Joseph --- lib/librte_eventdev/rte_eventmode_helper.c | 299 +++++++++++++++++++++ lib/librte_eventdev/rte_eventmode_helper.h | 57 ++++ .../rte_eventmode_helper_internal.h | 23 ++ 3 files changed, 379 insertions(+) diff --git a/lib/librte_eventdev/rte_eventmode_helper.c b/lib/librte_eventdev/rte_eventmode_helper.c index 7f2d269..25cb4a9 100644 --- a/lib/librte_eventdev/rte_eventmode_helper.c +++ b/lib/librte_eventdev/rte_eventmode_helper.c @@ -2,6 +2,7 @@ * Copyright(c) 2018 Cavium, Inc */ #include +#include #include #include @@ -13,6 +14,9 @@ #define CMD_LINE_OPT_TRANSFER_MODE "transfer-mode" +static volatile bool rx_core_running; +static volatile bool eventmode_worker_stop; + static const char short_options[] = "" ; @@ -110,6 +114,16 @@ internal_get_next_active_core(struct eventmode_conf *em_conf, return next_core; } +static inline bool +internal_dev_has_burst_mode(uint8_t dev_id) +{ + struct rte_event_dev_info dev_info; + + rte_event_dev_info_get(dev_id, &dev_info); + return (dev_info.event_dev_cap & RTE_EVENT_DEV_CAP_BURST_MODE) ? + true : false; +} + /* Global functions */ void @@ -992,3 +1006,288 @@ rte_eventmode_helper_get_tx_queue(struct rte_eventmode_helper_conf *mode_conf, return eventdev_config->nb_eventqueue; } +/* Helper functions for launching workers */ + +static int32_t +rte_eventmode_helper_start_worker_rx_core(struct eventmode_conf *em_conf, + uint32_t lcore_id) +{ + uint32_t service_id[EVENT_MODE_MAX_ADAPTERS_PER_RX_CORE]; + struct rx_adapter_conf *adapter; + int service_count = 0; + int adapter_id; + int32_t ret; + int i; + + RTE_EM_HLPR_LOG_INFO( + "Entering rx_core processing on lcore %u", lcore_id); + + /* + * Need to parse adapter conf to see which all adapters need to be + * handled this core. + */ + for (i = 0; i < em_conf->nb_rx_adapter; i++) { + /* Check if we have exceeded the max allowed */ + if (service_count > EVENT_MODE_MAX_ADAPTERS_PER_RX_CORE) { + RTE_EM_HLPR_LOG_ERR( + "Exceeded the max allowed adapters per rx core"); + break; + } + + adapter = &(em_conf->adapter[i]); + if (adapter->rx_core_id != lcore_id) + continue; + + /* Adapter need to be handled by this core */ + adapter_id = adapter->adapter_id; + + /* Get the service ID for the adapters */ + ret = rte_event_eth_rx_adapter_service_id_get(adapter_id, + &(service_id[service_count])); + + if (ret != -ESRCH && ret != 0) { + RTE_EM_HLPR_LOG_ERR( + "Error getting service ID used by adapter"); + return ret; + } + + /* Update service count */ + service_count++; + } + + rx_core_running = true; + + while (rx_core_running) { + for (i = 0; i < service_count; i++) { + /* Initiate rx_adapter service */ + rte_service_run_iter_on_app_lcore(service_id[i], 0); + } + } + + return 0; +} + +static int32_t +rte_eventmode_helper_stop_worker_rx_core(void) +{ + if (rx_core_running) { + RTE_EM_HLPR_LOG_INFO("Stopping rx cores\n"); + rx_core_running = false; + } + return 0; +} + +static struct rte_eventmode_helper_app_worker_params * +rte_eventmode_helper_find_worker(uint32_t lcore_id, + struct eventmode_conf *em_conf, + struct rte_eventmode_helper_app_worker_params *app_wrkrs, + uint8_t nb_wrkr_param) +{ + struct rte_eventmode_helper_event_link_info *link = NULL; + uint8_t eventdev_id; + struct eventdev_params *eventdev_config; + int i; + struct rte_eventmode_helper_app_worker_params curr_conf = {0}; + struct rte_eventmode_helper_app_worker_params *tmp_wrkr; + + /* + * Event device to be used will be derived from the first lcore-event + * link. + * + * Assumption: All lcore-event link tied to a core would be using the + * same event device. in other words, one core would be polling on + * queues of a single event device only. + */ + + /* Get a link for this lcore */ + for (i = 0; i < em_conf->nb_link; i++) { + link = &(em_conf->link[i]); + if (link->lcore_id == lcore_id) + break; + } + + if (link == NULL) { + RTE_EM_HLPR_LOG_ERR( + "No valid link found for lcore(%d)", lcore_id); + return NULL; + } + + /* Get event dev ID */ + eventdev_id = link->eventdev_id; + + /* Get the corresponding eventdev config */ + eventdev_config = internal_get_eventdev_params(em_conf, eventdev_id); + + /* Populate the curr_conf with the capabilities */ + + /* Check for burst mode */ + if (internal_dev_has_burst_mode(eventdev_id)) + curr_conf.cap.burst = RTE_EVENTMODE_HELPER_RX_TYPE_BURST; + else + curr_conf.cap.burst = RTE_EVENTMODE_HELPER_RX_TYPE_NON_BURST; + + curr_conf.cap.s1_sched_type = + rte_eventmode_helper_get_s1_sched_type(em_conf); + + curr_conf.cap.s2_sched_type = + rte_eventmode_helper_get_s2_sched_type(em_conf); + + /* TODO make this part of em_conf */ + curr_conf.nb_stage = 1; + + /* Now parse the passed list and see if we have matching capabilties */ + + /* Initialize the pointer used to traverse the list */ + tmp_wrkr = app_wrkrs; + + for (i = 0; i < nb_wrkr_param; i++, tmp_wrkr++) { + + /* Skip this if capabilities are not matching */ + if (tmp_wrkr->cap.u64 != curr_conf.cap.u64) + continue; + + /* Skip if the number of stages is not matching */ + if (tmp_wrkr->nb_stage != curr_conf.nb_stage) + continue; + + /* If the checks pass, we have a match */ + return tmp_wrkr; + } + + /* TODO required for ATQ */ + RTE_SET_USED(eventdev_config); + + return NULL; +} + +static int +rte_eventmode_helper_verify_match_worker( + struct rte_eventmode_helper_app_worker_params *match_wrkr) +{ + if (match_wrkr->nb_stage == 0) { + RTE_EM_HLPR_LOG_ERR("App stages cannot be 0"); + return 0; + } + + /* Verify the stages registered */ + switch (match_wrkr->nb_stage) { + case 2: + if (match_wrkr->s2_worker_thread == NULL) { + RTE_EM_HLPR_LOG_ERR( + "No worker registered for second stage"); + return 0; + } + /* Fall through */ + case 1: + if (match_wrkr->s1_worker_thread == NULL) { + RTE_EM_HLPR_LOG_ERR( + "No worker registered for first stage"); + return 0; + } + break; + default: + RTE_EM_HLPR_LOG_ERR("Only two stages are supported now"); + return 0; + } + + /* Success */ + return 1; +} + +void +rte_eventmode_helper_launch_worker(struct rte_eventmode_helper_conf *mode_conf, + struct rte_eventmode_helper_app_worker_params *app_wrkr, + uint8_t nb_wrkr_param) +{ + struct rte_eventmode_helper_app_worker_params *match_wrkr; + uint32_t lcore_id; + int i; + struct eventmode_conf *em_conf; + + if (mode_conf == NULL) { + RTE_EM_HLPR_LOG_ERR("Invalid conf"); + return; + } + + if (mode_conf->mode_params == NULL) { + RTE_EM_HLPR_LOG_ERR("Invalid mode params"); + return; + } + + /* Get eventmode conf */ + em_conf = (struct eventmode_conf *)(mode_conf->mode_params); + + /* Get core ID */ + lcore_id = rte_lcore_id(); + + /* TODO check capability for rx core */ + + /* Check if this is rx core */ + if (em_conf->rx_core_mask & (1 << lcore_id)) { + rte_eventmode_helper_start_worker_rx_core(em_conf, lcore_id); + return; + } + + if (app_wrkr == NULL || nb_wrkr_param == 0) { + RTE_EM_HLPR_LOG_ERR("Invalid args"); + return; + } + + /* + * This is a regular worker thread. The application would be + * registering multiple workers with various capabilities. The + * worker to be run will be selected by the capabilities of the + * event device configured. + */ + + /* Get the first matching worker for the event device */ + match_wrkr = rte_eventmode_helper_find_worker(lcore_id, + em_conf, + app_wrkr, + nb_wrkr_param); + + if (match_wrkr == NULL) { + RTE_EM_HLPR_LOG_ERR( + "No matching worker registered for lcore %d", lcore_id); + goto clean_and_exit; + } + + /* Verify sanity of the matched worker */ + if (rte_eventmode_helper_verify_match_worker(match_wrkr) != 1) { + RTE_EM_HLPR_LOG_ERR("Error in validating the matched worker"); + goto clean_and_exit; + } + + /* + * If single stage, then the worker thread will have the loop, + * thereby avoiding the dereferencing of the function pointer. + */ + if (match_wrkr->nb_stage == 1) { + match_wrkr->s1_worker_thread((void *)mode_conf); + goto clean_and_exit; + } + + /* TODO write worker stop API */ + eventmode_worker_stop = false; + + /* Run the worker threads */ + while (!eventmode_worker_stop) { + + /* Launch the stages registered */ + for (i = 1; i <= match_wrkr->nb_stage; i++) { + switch (i) { + case 1: + match_wrkr->s1_worker_thread((void *)em_conf); + break; + case 2: + match_wrkr->s2_worker_thread((void *)em_conf); + break; + } + } + } + +clean_and_exit: + + /* Flag rx_cores to stop, if started */ + rte_eventmode_helper_stop_worker_rx_core(); +} diff --git a/lib/librte_eventdev/rte_eventmode_helper.h b/lib/librte_eventdev/rte_eventmode_helper.h index be2fe8d..25b1180 100644 --- a/lib/librte_eventdev/rte_eventmode_helper.h +++ b/lib/librte_eventdev/rte_eventmode_helper.h @@ -12,6 +12,22 @@ enum rte_eventmode_helper_pkt_transfer_mode { RTE_EVENTMODE_HELPER_PKT_TRANSFER_MODE_EVENT, }; +/* Event mode packet rx types */ +enum rte_eventmode_helper_rx_types { + RTE_EVENTMODE_HELPER_RX_TYPE_INVALID = 0, + RTE_EVENTMODE_HELPER_RX_TYPE_NON_BURST, + RTE_EVENTMODE_HELPER_RX_TYPE_BURST, + RTE_EVENTMODE_HELPER_RX_TYPE_MAX = 16 +}; + +/* Event mode packet tx types */ +enum rte_eventmode_helper_tx_types { + RTE_EVETNMODE_HELPER_TX_TYPE_INVALID = 0, + RTE_EVENTMODE_HELPER_TX_TYPE_LOCKED, + RTE_EVENTMODE_HELPER_TX_TYPE_LOCKLESS, + RTE_EVENTMODE_HELPER_TX_TYPE_MAX = 16 +}; + struct rte_eventmode_helper_conf { enum rte_eventmode_helper_pkt_transfer_mode mode; /**< Packet transfer mode of the application */ @@ -36,6 +52,27 @@ struct rte_eventmode_helper_event_link_info { /**< Lcore to be polling on this port */ }; +/* Workers registered by the application */ +struct rte_eventmode_helper_app_worker_params { + union { + struct { + uint64_t burst : 4; + /**< Specify status of rx type burst */ + uint64_t s1_sched_type : 2; + /**< Stage 1 scheduling type for the thread */ + uint64_t s2_sched_type : 2; + /**< Stage 2 scheduling type for the thread */ + }; + uint64_t u64; + } cap; + /**< Capabilities of this worker */ + uint8_t nb_stage; + void (*s1_worker_thread)(void *); + /**< Stage 1 worker thread */ + void (*s2_worker_thread)(void *); + /**< Stage 2 worker thread */ +}; + /* Common helper functions for command line parsing */ /** @@ -152,5 +189,25 @@ uint8_t rte_eventmode_helper_get_tx_queue(struct rte_eventmode_helper_conf *mode_conf, uint8_t eventdev_id); +/** + * Launch eventmode worker + * + * The application can request the eventmode helper subsystem to launch the + * worker based on the capabilities of event device and the options selected + * while initializing the eventmode. + * + * @param mode_conf + * Configuration of the mode in which app is doing packet handling + * @param app_wrkr + * List of all the workers registered by application, along with it's + * capabilties + * @param nb_wrkr_param + * Number of workers passed by the application + * + */ +void +rte_eventmode_helper_launch_worker(struct rte_eventmode_helper_conf *mode_conf, + struct rte_eventmode_helper_app_worker_params *app_wrkr, + uint8_t nb_wrkr_param); #endif /* _RTE_EVENTMODE_HELPER_H_ */ diff --git a/lib/librte_eventdev/rte_eventmode_helper_internal.h b/lib/librte_eventdev/rte_eventmode_helper_internal.h index 3a4e52f..996c654 100644 --- a/lib/librte_eventdev/rte_eventmode_helper_internal.h +++ b/lib/librte_eventdev/rte_eventmode_helper_internal.h @@ -43,6 +43,9 @@ #define EVENT_MODE_MAX_LCORE_LINKS \ (EVENT_MODE_MAX_EVENT_DEVS * EVENT_MODE_MAX_EVENT_QUEUES_PER_DEV) +/* Max adapters that one rx core can handle */ +#define EVENT_MODE_MAX_ADAPTERS_PER_RX_CORE EVENT_MODE_MAX_RX_ADAPTERS + /* Event dev params */ struct eventdev_params { uint8_t eventdev_id; @@ -104,4 +107,24 @@ struct eventmode_conf { /**< 64 bit field to specify extended params */ }; +/* + * Get sched type of the first stage of app + * + */ +static inline uint8_t +rte_eventmode_helper_get_s1_sched_type(struct eventmode_conf *em_conf) +{ + return em_conf->ext_params.s1_sched_type; +} + +/* + * Get sched type of the first stage of app + * + */ +static inline uint8_t +rte_eventmode_helper_get_s2_sched_type(struct eventmode_conf *em_conf) +{ + return em_conf->ext_params.s2_sched_type; +} + #endif /* _RTE_EVENTMODE_HELPER_INTERNAL_H_ */