netdev - [net-next PATCH 3/3] dcb: Add stub routines for !CONFIG

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Date:	Thu, 06 Oct 2011 11:52:44 -0700
From:	John Fastabend <john.r.fastabend@...el.com>
To:	davem@...emloft.net
Cc:	john.r.fastabend@...el.com, netdev@...r.kernel.org,
	gospo@...hat.com
Subject: [net-next PATCH 3/3] dcb: Add stub routines for !CONFIG_DCB

To avoid ifdefs in the other code that supports DCB notifiers
add stub routines. This method seems popular in other net code
for example 8021Q.

Signed-off-by: John Fastabend <john.r.fastabend@...el.com>
---

 include/net/dcbevent.h |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/include/net/dcbevent.h b/include/net/dcbevent.h
index bc1e7ef..443626e 100644
--- a/include/net/dcbevent.h
+++ b/include/net/dcbevent.h
@@ -24,8 +24,26 @@ enum dcbevent_notif_type {
 	DCB_APP_EVENT = 1,
 };
 
+#ifdef CONFIG_DCB
 extern int register_dcbevent_notifier(struct notifier_block *nb);
 extern int unregister_dcbevent_notifier(struct notifier_block *nb);
 extern int call_dcbevent_notifiers(unsigned long val, void *v);
+#else
+static inline int
+register_dcbevent_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+
+static inline int unregister_dcbevent_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+
+static inline int call_dcbevent_notifiers(unsigned long val, void *v)
+{
+	return 0;
+}
+#endif /* CONFIG_DCB */
 
 #endif

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