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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/net/core/netevent.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/net/core/netevent.c')
-rw-r--r--kernel/net/core/netevent.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/kernel/net/core/netevent.c b/kernel/net/core/netevent.c
new file mode 100644
index 000000000..f17ccd291
--- /dev/null
+++ b/kernel/net/core/netevent.c
@@ -0,0 +1,70 @@
+/*
+ * Network event notifiers
+ *
+ * Authors:
+ * Tom Tucker <tom@opengridcomputing.com>
+ * Steve Wise <swise@opengridcomputing.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Fixes:
+ */
+
+#include <linux/rtnetlink.h>
+#include <linux/notifier.h>
+#include <linux/export.h>
+#include <net/netevent.h>
+
+static ATOMIC_NOTIFIER_HEAD(netevent_notif_chain);
+
+/**
+ * register_netevent_notifier - register a netevent notifier block
+ * @nb: notifier
+ *
+ * Register a notifier to be called when a netevent occurs.
+ * The notifier passed is linked into the kernel structures and must
+ * not be reused until it has been unregistered. A negative errno code
+ * is returned on a failure.
+ */
+int register_netevent_notifier(struct notifier_block *nb)
+{
+ int err;
+
+ err = atomic_notifier_chain_register(&netevent_notif_chain, nb);
+ return err;
+}
+EXPORT_SYMBOL_GPL(register_netevent_notifier);
+
+/**
+ * netevent_unregister_notifier - unregister a netevent notifier block
+ * @nb: notifier
+ *
+ * Unregister a notifier previously registered by
+ * register_neigh_notifier(). The notifier is unlinked into the
+ * kernel structures and may then be reused. A negative errno code
+ * is returned on a failure.
+ */
+
+int unregister_netevent_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(&netevent_notif_chain, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_netevent_notifier);
+
+/**
+ * call_netevent_notifiers - call all netevent notifier blocks
+ * @val: value passed unmodified to notifier function
+ * @v: pointer passed unmodified to notifier function
+ *
+ * Call all neighbour notifier blocks. Parameters and return value
+ * are as for notifier_call_chain().
+ */
+
+int call_netevent_notifiers(unsigned long val, void *v)
+{
+ return atomic_notifier_call_chain(&netevent_notif_chain, val, v);
+}
+EXPORT_SYMBOL_GPL(call_netevent_notifiers);