rte_keepalive.h

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#ifndef _KEEPALIVE_H_
#define _KEEPALIVE_H_

#include <rte_memory.h>

#ifndef RTE_KEEPALIVE_MAXCORES

#define RTE_KEEPALIVE_MAXCORES RTE_MAX_LCORE
#endif


typedef void (*rte_keepalive_failure_callback_t)(
        void *data,
        const int id_core);


struct rte_keepalive {
        enum {
                ALIVE = 1,
                MISSING = 0,
                DEAD = 2,
                GONE = 3
        } __rte_cache_aligned state_flags[RTE_KEEPALIVE_MAXCORES];

        uint64_t last_alive[RTE_KEEPALIVE_MAXCORES];

        uint8_t active_cores[RTE_KEEPALIVE_MAXCORES];

        rte_keepalive_failure_callback_t callback;

        void *callback_data;
        uint64_t tsc_initial;
        uint64_t tsc_mhz;
};


struct rte_keepalive *rte_keepalive_create(
        rte_keepalive_failure_callback_t callback,
        void *data);


void rte_keepalive_dispatch_pings(void *ptr_timer, void *ptr_data);


void rte_keepalive_register_core(struct rte_keepalive *keepcfg,
        const int id_core);


static inline void
rte_keepalive_mark_alive(struct rte_keepalive *keepcfg)
{
        keepcfg->state_flags[rte_lcore_id()] = ALIVE;
}


#endif /* _KEEPALIVE_H_ */