net: remove __napi_complete()

All __napi_complete() callers have been converted to
use the more standard napi_complete_done(),
we can now remove this NAPI method for good.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netdevice.h

@@ -463,7 +463,6 @@ static inline bool napi_reschedule(struct napi_struct *napi)
 	return false;
 }
 
-bool __napi_complete(struct napi_struct *n);
 bool napi_complete_done(struct napi_struct *n, int work_done);
 /**
  *	napi_complete - NAPI processing complete

net/core/dev.c

@@ -4883,23 +4883,6 @@ void __napi_schedule_irqoff(struct napi_struct *n)
 }
 EXPORT_SYMBOL(__napi_schedule_irqoff);
 
-bool __napi_complete(struct napi_struct *n)
-{
-	BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
-
-	/* Some drivers call us directly, instead of calling
-	 * napi_complete_done().
-	 */
-	if (unlikely(test_bit(NAPI_STATE_IN_BUSY_POLL, &n->state)))
-		return false;
-
-	list_del_init(&n->poll_list);
-	smp_mb__before_atomic();
-	clear_bit(NAPI_STATE_SCHED, &n->state);
-	return true;
-}
-EXPORT_SYMBOL(__napi_complete);
-
 bool napi_complete_done(struct napi_struct *n, int work_done)
 {
 	unsigned long flags;
@@ -4926,14 +4909,13 @@ bool napi_complete_done(struct napi_struct *n, int work_done)
 		else
 			napi_gro_flush(n, false);
 	}
-	if (likely(list_empty(&n->poll_list))) {
-		WARN_ON_ONCE(!test_and_clear_bit(NAPI_STATE_SCHED, &n->state));
-	} else {
+	if (unlikely(!list_empty(&n->poll_list))) {
 		/* If n->poll_list is not empty, we need to mask irqs */
 		local_irq_save(flags);
-		__napi_complete(n);
+		list_del_init(&n->poll_list);
 		local_irq_restore(flags);
 	}
+	WARN_ON_ONCE(!test_and_clear_bit(NAPI_STATE_SCHED, &n->state));
 	return true;
 }
 EXPORT_SYMBOL(napi_complete_done);