Re: [PATCH 1/4]review For Oracle bug 14470382

[jianhai luan <jianhai.luan@oracle.com>]

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On 2013-1-18 9:46, jianhai luan wrote:
> orabug: 14470382
>
> When Dom0's network environment change, for example the issue, DomU 
> should send send gratuitous ARP initially to notify how to reach it.
>
> To fix the bug, we should modify backend and frontend at the same 
> time. For fixing frontend, i filer the new bug 16182568. The review 
> only to backend.
>
> For fixing the backend, I have 4 patch for review.
[PATCH] net/core: add NETDEV_BONDING_FAILOVER event
>
> Thanks,
> Jason



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From c1da4ac752b8b0411791d26c678fcf23d2eed242 Mon Sep 17 00:00:00 2001
From: Or Gerlitz <ogerlitz@voltaire.com>
Date: Fri, 13 Jun 2008 18:12:00 -0700
Subject: [PATCH] net/core: add NETDEV_BONDING_FAILOVER event

Add NETDEV_BONDING_FAILOVER event to be used in a successive patch
by bonding to announce fail-over for the active-backup mode through the
netdev events notifier chain mechanism. Such an event can be of use for the
RDMA CM (communication manager) to let native RDMA ULPs (eg NFS-RDMA, iSER)
always be aligned with the IP stack, in the sense that they use the same
ports/links as the stack does. More usages can be done to allow monitoring
tools based on netlink events being aware to bonding fail-over.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 include/linux/netdevice.h |    1 +
 include/linux/notifier.h  |    1 +
 net/core/dev.c            |    6 ++++++
 3 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f27fd20..e92fc83 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1479,6 +1479,7 @@ extern void		__dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct
 extern void		dev_set_promiscuity(struct net_device *dev, int inc);
 extern void		dev_set_allmulti(struct net_device *dev, int inc);
 extern void		netdev_state_change(struct net_device *dev);
+extern void		netdev_bonding_change(struct net_device *dev);
 extern void		netdev_features_change(struct net_device *dev);
 /* Load a device via the kmod */
 extern void		dev_load(struct net *net, const char *name);
diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index 0ff6224..bd3d72d 100644
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -197,6 +197,7 @@ static inline int notifier_to_errno(int ret)
 #define NETDEV_GOING_DOWN	0x0009
 #define NETDEV_CHANGENAME	0x000A
 #define NETDEV_FEAT_CHANGE	0x000B
+#define NETDEV_BONDING_FAILOVER 0x000C
 
 #define SYS_DOWN	0x0001	/* Notify of system down */
 #define SYS_RESTART	SYS_DOWN
diff --git a/net/core/dev.c b/net/core/dev.c
index 68d8df0..0e45742 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -961,6 +961,12 @@ void netdev_state_change(struct net_device *dev)
 	}
 }
 
+void netdev_bonding_change(struct net_device *dev)
+{
+	call_netdevice_notifiers(NETDEV_BONDING_FAILOVER, dev);
+}
+EXPORT_SYMBOL(netdev_bonding_change);
+
 /**
  *	dev_load 	- load a network module
  *	@net: the applicable net namespace
-- 
1.7.6.5


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