[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 <davem@davemloft.net>

parent d1d08d12

net/core/dev.c

+6 −2

Original line number	Diff line number	Diff line
		@@ -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))
		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);
		}