netdev - [patch net-next 1/7] switchdev: introduce switchdev workqueue

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Date:	Sun, 11 Oct 2015 17:21:05 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, idosch@...lanox.com, eladr@...lanox.com,
	sfeldma@...il.com, f.fainelli@...il.com, linux@...ck-us.net,
	vivien.didelot@...oirfairelinux.com, andrew@...n.ch,
	john.fastabend@...il.com, David.Laight@...LAB.COM,
	stephen@...workplumber.org
Subject: [patch net-next 1/7] switchdev: introduce switchdev workqueue

From: Jiri Pirko <jiri@...lanox.com>

This is going to be used for deferred operations.

Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
 include/net/switchdev.h   |  5 +++++
 net/switchdev/switchdev.c | 19 +++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 89266a3..cc7f772 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -202,6 +202,7 @@ int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 void switchdev_port_fwd_mark_set(struct net_device *dev,
 				 struct net_device *group_dev,
 				 bool joining);
+void switchdev_flush_deferred(void);
 
 #else
 
@@ -323,6 +324,10 @@ static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
 {
 }
 
+static inline void switchdev_flush_deferred(void)
+{
+}
+
 #endif
 
 #endif /* _LINUX_SWITCHDEV_H_ */
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 6e4a4f9..10306b6 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -17,9 +17,12 @@
 #include <linux/netdevice.h>
 #include <linux/if_bridge.h>
 #include <linux/list.h>
+#include <linux/workqueue.h>
 #include <net/ip_fib.h>
 #include <net/switchdev.h>
 
+static struct workqueue_struct *switchdev_wq;
+
 /**
  *	switchdev_trans_item_enqueue - Enqueue data item to transaction queue
  *
@@ -1210,3 +1213,19 @@ void switchdev_port_fwd_mark_set(struct net_device *dev,
 	dev->offload_fwd_mark = mark;
 }
 EXPORT_SYMBOL_GPL(switchdev_port_fwd_mark_set);
+
+void switchdev_flush_deferred(void)
+{
+	flush_workqueue(switchdev_wq);
+}
+EXPORT_SYMBOL_GPL(switchdev_flush_deferred);
+
+static int __init switchdev_init(void)
+{
+	switchdev_wq = create_workqueue("switchdev");
+	if (!switchdev_wq)
+		return -ENOMEM;
+	return 0;
+}
+
+subsys_initcall(switchdev_init);
-- 
1.9.3

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