---

yaml --- r: 119884 b: refs/heads/master c: 7b363e4 h: refs/heads/master v: v3
git-mirror · Dec 10, 2008 · b1bced0 · b1bced0
1 parent 0e2a816
commit b1bced0
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Showing 3 changed files with 10 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 24fc7b86dc0470616803be2f921c8cd5c459175d
+refs/heads/master: 7b363e440021a1cf9ed76944b2685f48dacefb3e
diff --git a/trunk/include/linux/netdevice.h b/trunk/include/linux/netdevice.h
@@ -319,6 +319,7 @@ enum
 {
 	NAPI_STATE_SCHED,	/* Poll is scheduled */
 	NAPI_STATE_DISABLE,	/* Disable pending */
+	NAPI_STATE_NPSVC,	/* Netpoll - don't dequeue from poll_list */
 };
 
 extern void __napi_schedule(struct napi_struct *n);
@@ -1497,6 +1498,12 @@ static inline void netif_rx_complete(struct net_device *dev,
 {
 	unsigned long flags;
 
+	/*
+	 * don't let napi dequeue from the cpu poll list
+	 * just in case its running on a different cpu
+	 */
+	if (unlikely(test_bit(NAPI_STATE_NPSVC, &napi->state)))
+		return;
 	local_irq_save(flags);
 	__netif_rx_complete(dev, napi);
 	local_irq_restore(flags);

diff --git a/trunk/net/core/netpoll.c b/trunk/net/core/netpoll.c
@@ -133,9 +133,11 @@ static int poll_one_napi(struct netpoll_info *npinfo,
 
 	npinfo->rx_flags |= NETPOLL_RX_DROP;
 	atomic_inc(&trapped);
+	set_bit(NAPI_STATE_NPSVC, &napi->state);
 
 	work = napi->poll(napi, budget);
 
+	clear_bit(NAPI_STATE_NPSVC, &napi->state);
 	atomic_dec(&trapped);
 	npinfo->rx_flags &= ~NETPOLL_RX_DROP;