Attachment 303426 Details for Bug 441716 – Send fake ARP when link gets carrier

[patch] Send fake ARP when link gets carrier

p (text/plain), 1.52 KB, created by Herbert Xu on 2008-04-23 04:59:56 UTC

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Creator: Herbert Xu

Created: 2008-04-23 04:59:56 UTC

Size: 1.52 KB

patch

obsolete

>diff --git a/drivers/xen/netfront/netfront.c b/drivers/xen/netfront/netfront.c
>index 8925e77..ce9c1cf 100644
>--- a/drivers/xen/netfront/netfront.c
>+++ b/drivers/xen/netfront/netfront.c
>@@ -1999,6 +1999,22 @@ inetdev_notify(struct notifier_block *this, unsigned long event, void *ptr)
> 	return NOTIFY_DONE;
> }
> 
>+/*
>+ * We also send a fake ARP if the link gets carrier.
>+ */
>+static int
>+netdev_notify(struct notifier_block *this, unsigned long event, void *ptr)
>+{
>+	struct net_device *dev = ptr;
>+
>+	/* Carrier up event and is it one of our devices? */
>+	if (event == NETDEV_CHANGE && netif_carrier_ok(dev) &&
>+	    dev->open == network_open)
>+		(void)send_fake_arp(dev);
>+
>+	return NOTIFY_DONE;
>+}
>+
> 
> static void netif_disconnect_backend(struct netfront_info *info)
> {
>@@ -2062,6 +2078,10 @@ static struct notifier_block notifier_inetdev = {
> 	.priority       = 0
> };
> 
>+static struct notifier_block notifier_netdev = {
>+	.notifier_call  = netdev_notify,
>+};
>+
> static int __init netif_init(void)
> {
> 	if (!is_running_on_xen())
>@@ -2083,6 +2103,7 @@ static int __init netif_init(void)
> 	IPRINTK("Initialising virtual ethernet driver.\n");
> 
> 	(void)register_inetaddr_notifier(&notifier_inetdev);
>+	(void)register_netdevice_notifier(&notifier_netdev);
> 
> 	return xenbus_register_frontend(&netfront);
> }
>@@ -2096,6 +2117,7 @@ static void __exit netif_exit(void)
> 	if (is_initial_xendomain())
> 		return;
> 
>+	unregister_netdevice_notifier(&notifier_netdev);
> 	unregister_inetaddr_notifier(&notifier_inetdev);
> 
> 	return xenbus_unregister_driver(&netfront);

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Attachments on bug 441716: 302697 | 303426 | 310783 | 310792 | 312200 | 313096 | 313197