All of lore.kernel.org
 help / color / mirror / Atom feed
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1344263012-4031-6-git-send-email-amwang@redhat.com \
    --to=amwang@redhat.com \
    --cc=davem@davemloft.net \
    --cc=netdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.