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From: Cong Wang <amwang@redhat.com>
To: netdev@vger.kernel.org
Cc: Cong Wang <amwang@redhat.com>, "David S. Miller" <davem@davemloft.net>
Subject: [PATCH 5/8] netpoll: use netpoll_rx_on() in netpoll_rx()
Date: Mon,  6 Aug 2012 22:23:29 +0800	[thread overview]
Message-ID: <1344263012-4031-6-git-send-email-amwang@redhat.com> (raw)
In-Reply-To: <1344263012-4031-1-git-send-email-amwang@redhat.com>

The logic of the code is same, just call netpoll_rx_on().

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
---
 include/linux/netpoll.h |   18 +++++++++---------
 1 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index 5d881c3..2d178ba 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -63,6 +63,13 @@ static inline void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 
 
 #ifdef CONFIG_NETPOLL
+static inline int netpoll_rx_on(struct sk_buff *skb)
+{
+	struct netpoll_info *npinfo = rcu_dereference_bh(skb->dev->npinfo);
+
+	return npinfo && (!list_empty(&npinfo->rx_np) || npinfo->rx_flags);
+}
+
 static inline bool netpoll_rx(struct sk_buff *skb)
 {
 	struct netpoll_info *npinfo;
@@ -70,11 +77,11 @@ static inline bool netpoll_rx(struct sk_buff *skb)
 	bool ret = false;
 
 	local_irq_save(flags);
-	npinfo = rcu_dereference_bh(skb->dev->npinfo);
 
-	if (!npinfo || (list_empty(&npinfo->rx_np) && !npinfo->rx_flags))
+	if (!netpoll_rx_on(skb))
 		goto out;
 
+	npinfo = rcu_dereference_bh(skb->dev->npinfo);
 	spin_lock(&npinfo->rx_lock);
 	/* check rx_flags again with the lock held */
 	if (npinfo->rx_flags && __netpoll_rx(skb, npinfo))
@@ -86,13 +93,6 @@ out:
 	return ret;
 }
 
-static inline int netpoll_rx_on(struct sk_buff *skb)
-{
-	struct netpoll_info *npinfo = rcu_dereference_bh(skb->dev->npinfo);
-
-	return npinfo && (!list_empty(&npinfo->rx_np) || npinfo->rx_flags);
-}
-
 static inline int netpoll_receive_skb(struct sk_buff *skb)
 {
 	if (!list_empty(&skb->dev->napi_list))
-- 
1.7.7.6

  parent reply	other threads:[~2012-08-06 14:24 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-06 14:23 [PATCH v2 0/8] some netpoll and netconsole fixes Cong Wang
2012-08-06 14:23 ` [PATCH 1/8] netpoll: use GFP_ATOMIC in slave_enable_netpoll() and __netpoll_setup() Cong Wang
2012-08-06 15:20   ` Eric Dumazet
2012-08-07  2:28     ` Cong Wang
2012-08-06 14:23 ` [PATCH 2/8] netpoll: make __netpoll_cleanup non-block Cong Wang
2012-08-06 14:23 ` [PATCH 3/8] netconsole: do not release spin_lock when calling __netpoll_cleanup Cong Wang
2012-08-06 14:23 ` [PATCH 4/8] netpoll: take rcu_read_lock_bh() in netpoll_rx() Cong Wang
2012-08-06 14:23 ` Cong Wang [this message]
2012-08-06 14:23 ` [PATCH 6/8] netpoll: take rcu_read_lock_bh() in netpoll_send_skb_on_dev() Cong Wang
2012-08-06 14:23 ` [PATCH 7/8] bridge: add some comments for NETDEV_RELEASE Cong Wang
2012-08-06 20:50   ` David Miller
2012-08-06 23:39     ` Joe Perches
2012-08-10 10:59       ` Jan Engelhardt
2012-08-10 11:13         ` Joe Perches
2012-08-07  2:27     ` Cong Wang
2012-08-07  5:59     ` [Resend PATCH " Cong Wang
2012-08-07  7:10       ` David Miller
2012-08-07 15:13         ` Cong Wang
2012-08-06 14:23 ` [PATCH 8/8] bridge: use list_for_each_entry() in netpoll functions Cong Wang
2012-08-11 18:07   ` Stephen Hemminger
2012-08-07  6:58 ` [PATCH v2 0/8] some netpoll and netconsole fixes Cong Wang

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