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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 {
46 * Each element must be cache aligned to prevent false sharing.
48 enum rte_keepalive_state core_state __rte_cache_aligned;
49 } live_data[RTE_KEEPALIVE_MAXCORES];
51 /** Last-seen-alive timestamps */
52 uint64_t last_alive[RTE_KEEPALIVE_MAXCORES];
56 * Indexed by core id, non-zero if the core should be checked.
58 uint8_t active_cores[RTE_KEEPALIVE_MAXCORES];
60 /** Dead core handler. */
61 rte_keepalive_failure_callback_t callback;
64 * Dead core handler app data.
65 * Pointer is passed to dead core handler.
71 /** Core state relay handler. */
72 rte_keepalive_relay_callback_t relay_callback;
75 * Core state relay handler app data.
76 * Pointer is passed to live core handler.
78 void *relay_callback_data;
82 print_trace(const char *msg, struct rte_keepalive *keepcfg, int idx_core)
84 RTE_LOG(INFO, EAL, "%sLast seen %" PRId64 "ms ago.\n",
86 ((rte_rdtsc() - keepcfg->last_alive[idx_core])*1000)
92 rte_keepalive_dispatch_pings(__rte_unused void *ptr_timer,
95 struct rte_keepalive *keepcfg = ptr_data;
98 for (idx_core = 0; idx_core < RTE_KEEPALIVE_MAXCORES; idx_core++) {
99 if (keepcfg->active_cores[idx_core] == 0)
102 switch (keepcfg->live_data[idx_core].core_state) {
103 case RTE_KA_STATE_UNUSED:
105 case RTE_KA_STATE_ALIVE: /* Alive */
106 keepcfg->live_data[idx_core].core_state =
107 RTE_KA_STATE_MISSING;
108 keepcfg->last_alive[idx_core] = rte_rdtsc();
110 case RTE_KA_STATE_MISSING: /* MIA */
111 print_trace("Core MIA. ", keepcfg, idx_core);
112 keepcfg->live_data[idx_core].core_state =
115 case RTE_KA_STATE_DEAD: /* Dead */
116 keepcfg->live_data[idx_core].core_state =
118 print_trace("Core died. ", keepcfg, idx_core);
119 if (keepcfg->callback)
121 keepcfg->callback_data,
125 case RTE_KA_STATE_GONE: /* Buried */
127 case RTE_KA_STATE_DOZING: /* Core going idle */
128 keepcfg->live_data[idx_core].core_state =
130 keepcfg->last_alive[idx_core] = rte_rdtsc();
132 case RTE_KA_STATE_SLEEP: /* Idled core */
135 if (keepcfg->relay_callback)
136 keepcfg->relay_callback(
137 keepcfg->relay_callback_data,
139 keepcfg->live_data[idx_core].core_state,
140 keepcfg->last_alive[idx_core]
145 struct rte_keepalive *
146 rte_keepalive_create(rte_keepalive_failure_callback_t callback,
149 struct rte_keepalive *keepcfg;
151 keepcfg = rte_zmalloc("RTE_EAL_KEEPALIVE",
152 sizeof(struct rte_keepalive),
153 RTE_CACHE_LINE_SIZE);
154 if (keepcfg != NULL) {
155 keepcfg->callback = callback;
156 keepcfg->callback_data = data;
157 keepcfg->tsc_initial = rte_rdtsc();
158 keepcfg->tsc_mhz = rte_get_tsc_hz() / 1000;
163 void rte_keepalive_register_relay_callback(struct rte_keepalive *keepcfg,
164 rte_keepalive_relay_callback_t callback,
167 keepcfg->relay_callback = callback;
168 keepcfg->relay_callback_data = data;
172 rte_keepalive_register_core(struct rte_keepalive *keepcfg, const int id_core)
174 if (id_core < RTE_KEEPALIVE_MAXCORES) {
175 keepcfg->active_cores[id_core] = RTE_KA_STATE_ALIVE;
176 keepcfg->last_alive[id_core] = rte_rdtsc();
181 rte_keepalive_mark_alive(struct rte_keepalive *keepcfg)
183 keepcfg->live_data[rte_lcore_id()].core_state = RTE_KA_STATE_ALIVE;
187 rte_keepalive_mark_sleep(struct rte_keepalive *keepcfg)
189 keepcfg->live_data[rte_lcore_id()].core_state = RTE_KA_STATE_DOZING;