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35 #include <rte_common.h>
36 #include <rte_cycles.h>
37 #include <rte_lcore.h>
39 #include <rte_keepalive.h>
40 #include <rte_malloc.h>
42 struct rte_keepalive {
44 enum rte_keepalive_state __rte_cache_aligned state_flags[
45 RTE_KEEPALIVE_MAXCORES];
47 /** Last-seen-alive timestamps */
48 uint64_t last_alive[RTE_KEEPALIVE_MAXCORES];
52 * Indexed by core id, non-zero if the core should be checked.
54 uint8_t active_cores[RTE_KEEPALIVE_MAXCORES];
56 /** Dead core handler. */
57 rte_keepalive_failure_callback_t callback;
60 * Dead core handler app data.
61 * Pointer is passed to dead core handler.
67 /** Core state relay handler. */
68 rte_keepalive_relay_callback_t relay_callback;
71 * Core state relay handler app data.
72 * Pointer is passed to live core handler.
74 void *relay_callback_data;
78 print_trace(const char *msg, struct rte_keepalive *keepcfg, int idx_core)
80 RTE_LOG(INFO, EAL, "%sLast seen %" PRId64 "ms ago.\n",
82 ((rte_rdtsc() - keepcfg->last_alive[idx_core])*1000)
88 rte_keepalive_dispatch_pings(__rte_unused void *ptr_timer,
91 struct rte_keepalive *keepcfg = ptr_data;
94 for (idx_core = 0; idx_core < RTE_KEEPALIVE_MAXCORES; idx_core++) {
95 if (keepcfg->active_cores[idx_core] == 0)
98 switch (keepcfg->state_flags[idx_core]) {
99 case RTE_KA_STATE_UNUSED:
101 case RTE_KA_STATE_ALIVE: /* Alive */
102 keepcfg->state_flags[idx_core] = RTE_KA_STATE_MISSING;
103 keepcfg->last_alive[idx_core] = rte_rdtsc();
105 case RTE_KA_STATE_MISSING: /* MIA */
106 print_trace("Core MIA. ", keepcfg, idx_core);
107 keepcfg->state_flags[idx_core] = RTE_KA_STATE_DEAD;
109 case RTE_KA_STATE_DEAD: /* Dead */
110 keepcfg->state_flags[idx_core] = RTE_KA_STATE_GONE;
111 print_trace("Core died. ", keepcfg, idx_core);
112 if (keepcfg->callback)
114 keepcfg->callback_data,
118 case RTE_KA_STATE_GONE: /* Buried */
120 case RTE_KA_STATE_DOZING: /* Core going idle */
121 keepcfg->state_flags[idx_core] = RTE_KA_STATE_SLEEP;
122 keepcfg->last_alive[idx_core] = rte_rdtsc();
124 case RTE_KA_STATE_SLEEP: /* Idled core */
127 if (keepcfg->relay_callback)
128 keepcfg->relay_callback(
129 keepcfg->relay_callback_data,
131 keepcfg->state_flags[idx_core],
132 keepcfg->last_alive[idx_core]
137 struct rte_keepalive *
138 rte_keepalive_create(rte_keepalive_failure_callback_t callback,
141 struct rte_keepalive *keepcfg;
143 keepcfg = rte_zmalloc("RTE_EAL_KEEPALIVE",
144 sizeof(struct rte_keepalive),
145 RTE_CACHE_LINE_SIZE);
146 if (keepcfg != NULL) {
147 keepcfg->callback = callback;
148 keepcfg->callback_data = data;
149 keepcfg->tsc_initial = rte_rdtsc();
150 keepcfg->tsc_mhz = rte_get_tsc_hz() / 1000;
155 void rte_keepalive_register_relay_callback(struct rte_keepalive *keepcfg,
156 rte_keepalive_relay_callback_t callback,
159 keepcfg->relay_callback = callback;
160 keepcfg->relay_callback_data = data;
164 rte_keepalive_register_core(struct rte_keepalive *keepcfg, const int id_core)
166 if (id_core < RTE_KEEPALIVE_MAXCORES) {
167 keepcfg->active_cores[id_core] = RTE_KA_STATE_ALIVE;
168 keepcfg->last_alive[id_core] = rte_rdtsc();
173 rte_keepalive_mark_alive(struct rte_keepalive *keepcfg)
175 keepcfg->state_flags[rte_lcore_id()] = RTE_KA_STATE_ALIVE;
179 rte_keepalive_mark_sleep(struct rte_keepalive *keepcfg)
181 keepcfg->state_flags[rte_lcore_id()] = RTE_KA_STATE_DOZING;