Function bnxt_cpr_cmp_valid

dpdk/drivers/net/bnxt/bnxt_cpr.h:124–137

* Check validity of a completion ring entry. If the entry is valid, include a * C11 __ATOMIC_ACQUIRE fence to ensure that subsequent loads of fields in the * completion are not hoisted by the compiler or by the CPU to come before the * loading of the "valid" field. * * Note: the caller must not access any fields in the specified completion * entry prior to calling this function. * * @param

 *   Size of completion ring.
 */
static __rte_always_inline bool
bnxt_cpr_cmp_valid(const void *cmpl, uint32_t raw_cons, uint32_t ring_size)
{
	const struct cmpl_base *c = cmpl;
	bool expected, valid;

	expected = !(raw_cons & ring_size);
	valid = !!(rte_le_to_cpu_32(c->info3_v) & CMPL_BASE_V);
	if (valid == expected) {
		rte_atomic_thread_fence(__ATOMIC_ACQUIRE);
		return true;
	}
	return false;
}
#endif