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34 * @file rte_keepalive.h
35 * DPDK RTE LCore Keepalive Monitor.
42 #include <rte_config.h>
43 #include <rte_memory.h>
45 #ifndef RTE_KEEPALIVE_MAXCORES
47 * Number of cores to track.
48 * @note Must be larger than the highest core id. */
49 #define RTE_KEEPALIVE_MAXCORES RTE_MAX_LCORE
52 enum rte_keepalive_state {
53 RTE_KA_STATE_UNUSED = 0,
54 RTE_KA_STATE_ALIVE = 1,
55 RTE_KA_STATE_MISSING = 4,
56 RTE_KA_STATE_DEAD = 2,
57 RTE_KA_STATE_GONE = 3,
58 RTE_KA_STATE_DOZING = 5,
59 RTE_KA_STATE_SLEEP = 6
63 * Keepalive failure callback.
65 * Receives a data pointer passed to rte_keepalive_create() and the id of the
67 * @param data Data pointer passed to rte_keepalive_create()
68 * @param id_core ID of the core that has failed
70 typedef void (*rte_keepalive_failure_callback_t)(
75 * Keepalive relay callback.
77 * Receives a data pointer passed to rte_keepalive_register_relay_callback(),
78 * the id of the core for which state is to be forwarded, and details of the
80 * @param data Data pointer passed to rte_keepalive_register_relay_callback()
81 * @param id_core ID of the core for which state is being reported
82 * @param core_state The current state of the core
83 * @param Timestamp of when core was last seen alive
85 typedef void (*rte_keepalive_relay_callback_t)(
88 enum rte_keepalive_state core_state,
93 * Keepalive state structure.
99 * Initialise keepalive sub-system.
101 * Function called upon detection of a dead core.
103 * Data pointer to be passed to function callback.
105 * Keepalive structure success, NULL on failure.
107 struct rte_keepalive *rte_keepalive_create(
108 rte_keepalive_failure_callback_t callback,
112 * Checks & handles keepalive state of monitored cores.
113 * @param *ptr_timer Triggering timer (unused)
114 * @param *ptr_data Data pointer (keepalive structure)
116 void rte_keepalive_dispatch_pings(void *ptr_timer, void *ptr_data);
119 * Registers a core for keepalive checks.
121 * Keepalive structure pointer
123 * ID number of core to register.
125 void rte_keepalive_register_core(struct rte_keepalive *keepcfg,
129 * Per-core keepalive check.
131 * Keepalive structure pointer
133 * This function needs to be called from within the main process loop of
134 * the LCore to be checked.
137 rte_keepalive_mark_alive(struct rte_keepalive *keepcfg);
140 * Per-core sleep-time indication.
142 * Keepalive structure pointer
144 * If CPU idling is enabled, this function needs to be called from within
145 * the main process loop of the LCore going to sleep, in order to avoid
146 * the LCore being mis-detected as dead.
149 rte_keepalive_mark_sleep(struct rte_keepalive *keepcfg);
152 * Registers a 'live core' callback.
154 * The complement of the 'dead core' callback. This is called when a
155 * core is known to be alive, and is intended for cases when an app
156 * needs to know 'liveness' beyond just knowing when a core has died.
159 * Keepalive structure pointer
161 * Function called upon detection of a dead core.
163 * Data pointer to be passed to function callback.
166 rte_keepalive_register_relay_callback(struct rte_keepalive *keepcfg,
167 rte_keepalive_relay_callback_t callback,
170 #endif /* _KEEPALIVE_H_ */