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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>
41 #include <rte_cycles.h>
43 struct rte_keepalive {
45 enum rte_keepalive_state __rte_cache_aligned state_flags[
46 RTE_KEEPALIVE_MAXCORES];
48 /** Last-seen-alive timestamps */
49 uint64_t last_alive[RTE_KEEPALIVE_MAXCORES];
53 * Indexed by core id, non-zero if the core should be checked.
55 uint8_t active_cores[RTE_KEEPALIVE_MAXCORES];
57 /** Dead core handler. */
58 rte_keepalive_failure_callback_t callback;
61 * Dead core handler app data.
62 * Pointer is passed to dead core handler.
68 /** Core state relay handler. */
69 rte_keepalive_relay_callback_t relay_callback;
72 * Core state relay handler app data.
73 * Pointer is passed to live core handler.
75 void *relay_callback_data;
79 print_trace(const char *msg, struct rte_keepalive *keepcfg, int idx_core)
81 RTE_LOG(INFO, EAL, "%sLast seen %" PRId64 "ms ago.\n",
83 ((rte_rdtsc() - keepcfg->last_alive[idx_core])*1000)
89 rte_keepalive_dispatch_pings(__rte_unused void *ptr_timer,
92 struct rte_keepalive *keepcfg = ptr_data;
95 for (idx_core = 0; idx_core < RTE_KEEPALIVE_MAXCORES; idx_core++) {
96 if (keepcfg->active_cores[idx_core] == 0)
99 switch (keepcfg->state_flags[idx_core]) {
100 case RTE_KA_STATE_UNUSED:
102 case RTE_KA_STATE_ALIVE: /* Alive */
103 keepcfg->state_flags[idx_core] = RTE_KA_STATE_MISSING;
104 keepcfg->last_alive[idx_core] = rte_rdtsc();
106 case RTE_KA_STATE_MISSING: /* MIA */
107 print_trace("Core MIA. ", keepcfg, idx_core);
108 keepcfg->state_flags[idx_core] = RTE_KA_STATE_DEAD;
110 case RTE_KA_STATE_DEAD: /* Dead */
111 keepcfg->state_flags[idx_core] = RTE_KA_STATE_GONE;
112 print_trace("Core died. ", keepcfg, idx_core);
113 if (keepcfg->callback)
115 keepcfg->callback_data,
119 case RTE_KA_STATE_GONE: /* Buried */
121 case RTE_KA_STATE_DOZING: /* Core going idle */
122 keepcfg->state_flags[idx_core] = RTE_KA_STATE_SLEEP;
123 keepcfg->last_alive[idx_core] = rte_rdtsc();
125 case RTE_KA_STATE_SLEEP: /* Idled core */
128 if (keepcfg->relay_callback)
129 keepcfg->relay_callback(
130 keepcfg->relay_callback_data,
132 keepcfg->state_flags[idx_core],
133 keepcfg->last_alive[idx_core]
138 struct rte_keepalive *
139 rte_keepalive_create(rte_keepalive_failure_callback_t callback,
142 struct rte_keepalive *keepcfg;
144 keepcfg = rte_zmalloc("RTE_EAL_KEEPALIVE",
145 sizeof(struct rte_keepalive),
146 RTE_CACHE_LINE_SIZE);
147 if (keepcfg != NULL) {
148 keepcfg->callback = callback;
149 keepcfg->callback_data = data;
150 keepcfg->tsc_initial = rte_rdtsc();
151 keepcfg->tsc_mhz = rte_get_tsc_hz() / 1000;
156 void rte_keepalive_register_relay_callback(struct rte_keepalive *keepcfg,
157 rte_keepalive_relay_callback_t callback,
160 keepcfg->relay_callback = callback;
161 keepcfg->relay_callback_data = data;
165 rte_keepalive_register_core(struct rte_keepalive *keepcfg, const int id_core)
167 if (id_core < RTE_KEEPALIVE_MAXCORES) {
168 keepcfg->active_cores[id_core] = RTE_KA_STATE_ALIVE;
169 keepcfg->last_alive[id_core] = rte_rdtsc();
174 rte_keepalive_mark_alive(struct rte_keepalive *keepcfg)
176 keepcfg->state_flags[rte_lcore_id()] = RTE_KA_STATE_ALIVE;
180 rte_keepalive_mark_sleep(struct rte_keepalive *keepcfg)
182 keepcfg->state_flags[rte_lcore_id()] = RTE_KA_STATE_DOZING;