[NET]: Stop polling when napi_disable() is pending.

This finally adds the code in net_rx_action() to break out of the ->poll()'ing loop when a napi_disable() is found to be pending. Now, even if a device is being flooded with packets it can be cleanly brought down. Signed-off-by: David S. Miller <[email protected]>
mrcsosa · Jan 9, 2008 · fed17f3 · fed17f3
1 parent d1d08d1
commit fed17f3
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/net/core/dev.c b/net/core/dev.c
@@ -2207,8 +2207,12 @@ static void net_rx_action(struct softirq_action *h)
 		 * still "owns" the NAPI instance and therefore can
 		 * move the instance around on the list at-will.
 		 */
-		if (unlikely(work == weight))
-			list_move_tail(&n->poll_list, list);
+		if (unlikely(work == weight)) {
+			if (unlikely(napi_disable_pending(n)))
+				__napi_complete(n);
+			else
+				list_move_tail(&n->poll_list, list);
+		}
 
 		netpoll_poll_unlock(have);
 	}