转:http://blog.csdn.net/nerdx/article/details/12843799
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1.1 static struct notifier_block fib_inetaddr_notifier = {
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.notifier_call = fib_inetaddr_event,
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};
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1.2 static int fib_inetaddr_event(struct notifier_block *this, unsigned long event, void *ptr)
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{
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struct in_ifaddr *ifa = (struct in_ifaddr*)ptr;
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switch (event) {
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case NETDEV_UP:
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fib_add_ifaddr(ifa);
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#ifdef CONFIG_IP_ROUTE_MULTIPATH
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fib_sync_up(ifa->ifa_dev->dev);
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#endif
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rt_cache_flush(-1);
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break;
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case NETDEV_DOWN:
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fib_del_ifaddr(ifa);
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if (ifa->ifa_dev && ifa->ifa_dev->ifa_list == NULL) {
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fib_disable_ip(ifa->ifa_dev->dev, 1);
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} else {
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rt_cache_flush(-1);
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}
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break;
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}
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return NOTIFY_DONE;
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}
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