Hi,
Like was mentioned here, maybe we need a global counter that is not
accessed that frequently, and use per-cpu counters for the most frequent
accesses. To keep the order somewhat sane, we need a global counter:
Pseudo code:
static int V_ip_id;
PER_CPU(V_ip_id_start);
PER_CPU(V_ip_id_end);
static uint16_t
get_next_id()
{
if (PER_CPU(V_ip_id_start) == PER_CPU(V_ip_id_end)) {
next = atomic_add32(&V_ip_id, 256);
V_ip_id_start = next;
V_ip_id_end = next + 256;
}
id = V_ip_id_start++;
return (id);
}
--HPS
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