netdev - [PATCH net-next 1/5] netpoll: remove dev argument from netpoll_send_skb_on

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Message-Id: <20200507163222.122469-2-edumazet@google.com>
Date:   Thu,  7 May 2020 09:32:18 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 1/5] netpoll: remove dev argument from netpoll_send_skb_on_dev()

netpoll_send_skb_on_dev() can get the device pointer directly from np->dev

Rename it to __netpoll_send_skb()

Following patch will move netpoll_send_skb() out-of-line.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 include/linux/netpoll.h |  5 ++---
 net/core/netpoll.c      | 10 ++++++----
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index 676f1ff161a98cd185d2f8cfff561779722fab29..00e0bae3d402e7388742373e81600e962c945ea5 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -63,13 +63,12 @@ int netpoll_setup(struct netpoll *np);
 void __netpoll_cleanup(struct netpoll *np);
 void __netpoll_free(struct netpoll *np);
 void netpoll_cleanup(struct netpoll *np);
-void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
-			     struct net_device *dev);
+void __netpoll_send_skb(struct netpoll *np, struct sk_buff *skb);
 static inline void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 {
 	unsigned long flags;
 	local_irq_save(flags);
-	netpoll_send_skb_on_dev(np, skb, np->dev);
+	__netpoll_send_skb(np, skb);
 	local_irq_restore(flags);
 }
 
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 15b366a1a9585f1aa15d642f208b0f4ae6effa34..c5059b7ffc9446e2c777c2b81f0ae59882d6f265 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -305,17 +305,19 @@ static int netpoll_owner_active(struct net_device *dev)
 }
 
 /* call with IRQ disabled */
-void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
-			     struct net_device *dev)
+void __netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
 {
 	netdev_tx_t status = NETDEV_TX_BUSY;
+	struct net_device *dev;
 	unsigned long tries;
 	/* It is up to the caller to keep npinfo alive. */
 	struct netpoll_info *npinfo;
 
 	lockdep_assert_irqs_disabled();
 
-	npinfo = rcu_dereference_bh(np->dev->npinfo);
+	dev = np->dev;
+	npinfo = rcu_dereference_bh(dev->npinfo);
+
 	if (!npinfo || !netif_running(dev) || !netif_device_present(dev)) {
 		dev_kfree_skb_irq(skb);
 		return;
@@ -358,7 +360,7 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
 		schedule_delayed_work(&npinfo->tx_work,0);
 	}
 }
-EXPORT_SYMBOL(netpoll_send_skb_on_dev);
+EXPORT_SYMBOL(__netpoll_send_skb);
 
 void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
 {
-- 
2.26.2.526.g744177e7f7-goog