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792d1932e3
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>
34 lines
784 B
C
34 lines
784 B
C
#ifndef _NET_EVENT_H
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#define _NET_EVENT_H
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/*
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* Generic netevent notifiers
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*
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* Authors:
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* Tom Tucker <tom@opengridcomputing.com>
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* Steve Wise <swise@opengridcomputing.com>
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*
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* Changes:
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*/
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#ifdef __KERNEL__
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#include <net/dst.h>
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struct netevent_redirect {
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struct dst_entry *old;
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struct dst_entry *new;
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};
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enum netevent_notif_type {
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NETEVENT_NEIGH_UPDATE = 1, /* arg is struct neighbour ptr */
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NETEVENT_PMTU_UPDATE, /* arg is struct dst_entry ptr */
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NETEVENT_REDIRECT, /* arg is struct netevent_redirect ptr */
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};
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extern int register_netevent_notifier(struct notifier_block *nb);
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extern int unregister_netevent_notifier(struct notifier_block *nb);
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extern int call_netevent_notifiers(unsigned long val, void *v);
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#endif
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#endif
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