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authorTom Tucker <tom@opengridcomputing.com>2006-07-31 07:43:26 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-08-03 00:38:20 +0400
commit792d1932e319ff8ba01361e7d151b1794c55c31f (patch)
treee4259bbccab44d311f7fd3d3ffc18557ae52c49c /include/net/netevent.h
parent3687b1dc6fe83a500ba4d3235704594f6a111a2d (diff)
downloadlinux-792d1932e319ff8ba01361e7d151b1794c55c31f.tar.xz
[NET]: Network Event Notifier Mechanism.
This patch uses notifier blocks to implement a network event notifier mechanism. Clients register their callback function by calling register_netevent_notifier() like this: static struct notifier_block nb = { .notifier_call = my_callback_func }; ... register_netevent_notifier(&nb); Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/netevent.h')
-rw-r--r--include/net/netevent.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/include/net/netevent.h b/include/net/netevent.h
new file mode 100644
index 000000000000..e5d216241423
--- /dev/null
+++ b/include/net/netevent.h
@@ -0,0 +1,33 @@
+#ifndef _NET_EVENT_H
+#define _NET_EVENT_H
+
+/*
+ * Generic netevent notifiers
+ *
+ * Authors:
+ * Tom Tucker <tom@opengridcomputing.com>
+ * Steve Wise <swise@opengridcomputing.com>
+ *
+ * Changes:
+ */
+#ifdef __KERNEL__
+
+#include <net/dst.h>
+
+struct netevent_redirect {
+ struct dst_entry *old;
+ struct dst_entry *new;
+};
+
+enum netevent_notif_type {
+ NETEVENT_NEIGH_UPDATE = 1, /* arg is struct neighbour ptr */
+ NETEVENT_PMTU_UPDATE, /* arg is struct dst_entry ptr */
+ NETEVENT_REDIRECT, /* arg is struct netevent_redirect ptr */
+};
+
+extern int register_netevent_notifier(struct notifier_block *nb);
+extern int unregister_netevent_notifier(struct notifier_block *nb);
+extern int call_netevent_notifiers(unsigned long val, void *v);
+
+#endif
+#endif