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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 {
47 * Each element must be cache aligned to prevent false sharing.
49 enum rte_keepalive_state core_state __rte_cache_aligned;
50 } live_data[RTE_KEEPALIVE_MAXCORES];
52 /** Last-seen-alive timestamps */
53 uint64_t last_alive[RTE_KEEPALIVE_MAXCORES];
57 * Indexed by core id, non-zero if the core should be checked.
59 uint8_t active_cores[RTE_KEEPALIVE_MAXCORES];
61 /** Dead core handler. */
62 rte_keepalive_failure_callback_t callback;
65 * Dead core handler app data.
66 * Pointer is passed to dead core handler.
72 /** Core state relay handler. */
73 rte_keepalive_relay_callback_t relay_callback;
76 * Core state relay handler app data.
77 * Pointer is passed to live core handler.
79 void *relay_callback_data;
83 print_trace(const char *msg, struct rte_keepalive *keepcfg, int idx_core)
85 RTE_LOG(INFO, EAL, "%sLast seen %" PRId64 "ms ago.\n",
87 ((rte_rdtsc() - keepcfg->last_alive[idx_core])*1000)
93 rte_keepalive_dispatch_pings(__rte_unused void *ptr_timer,
96 struct rte_keepalive *keepcfg = ptr_data;
99 for (idx_core = 0; idx_core < RTE_KEEPALIVE_MAXCORES; idx_core++) {
100 if (keepcfg->active_cores[idx_core] == 0)
103 switch (keepcfg->live_data[idx_core].core_state) {
104 case RTE_KA_STATE_UNUSED:
106 case RTE_KA_STATE_ALIVE: /* Alive */
107 keepcfg->live_data[idx_core].core_state =
108 RTE_KA_STATE_MISSING;
109 keepcfg->last_alive[idx_core] = rte_rdtsc();
111 case RTE_KA_STATE_MISSING: /* MIA */
112 print_trace("Core MIA. ", keepcfg, idx_core);
113 keepcfg->live_data[idx_core].core_state =
116 case RTE_KA_STATE_DEAD: /* Dead */
117 keepcfg->live_data[idx_core].core_state =
119 print_trace("Core died. ", keepcfg, idx_core);
120 if (keepcfg->callback)
122 keepcfg->callback_data,
126 case RTE_KA_STATE_GONE: /* Buried */
128 case RTE_KA_STATE_DOZING: /* Core going idle */
129 keepcfg->live_data[idx_core].core_state =
131 keepcfg->last_alive[idx_core] = rte_rdtsc();
133 case RTE_KA_STATE_SLEEP: /* Idled core */
136 if (keepcfg->relay_callback)
137 keepcfg->relay_callback(
138 keepcfg->relay_callback_data,
140 keepcfg->live_data[idx_core].core_state,
141 keepcfg->last_alive[idx_core]
146 struct rte_keepalive *
147 rte_keepalive_create(rte_keepalive_failure_callback_t callback,
150 struct rte_keepalive *keepcfg;
152 keepcfg = rte_zmalloc("RTE_EAL_KEEPALIVE",
153 sizeof(struct rte_keepalive),
154 RTE_CACHE_LINE_SIZE);
155 if (keepcfg != NULL) {
156 keepcfg->callback = callback;
157 keepcfg->callback_data = data;
158 keepcfg->tsc_initial = rte_rdtsc();
159 keepcfg->tsc_mhz = rte_get_tsc_hz() / 1000;
164 void rte_keepalive_register_relay_callback(struct rte_keepalive *keepcfg,
165 rte_keepalive_relay_callback_t callback,
168 keepcfg->relay_callback = callback;
169 keepcfg->relay_callback_data = data;
173 rte_keepalive_register_core(struct rte_keepalive *keepcfg, const int id_core)
175 if (id_core < RTE_KEEPALIVE_MAXCORES) {
176 keepcfg->active_cores[id_core] = RTE_KA_STATE_ALIVE;
177 keepcfg->last_alive[id_core] = rte_rdtsc();
182 rte_keepalive_mark_alive(struct rte_keepalive *keepcfg)
184 keepcfg->live_data[rte_lcore_id()].core_state = RTE_KA_STATE_ALIVE;
188 rte_keepalive_mark_sleep(struct rte_keepalive *keepcfg)
190 keepcfg->live_data[rte_lcore_id()].core_state = RTE_KA_STATE_DOZING;