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Commit c1da4ac7 authored by Or Gerlitz's avatar Or Gerlitz Committed by Jeff Garzik
Browse files

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: default avatarOr Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: default avatarJay Vosburgh <fubar@us.ibm.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 743d32ad

include/linux/netdevice.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

include/linux/notifier.h

+1 −0
Original line number Diff line number Diff line
@@ -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

net/core/dev.c

+6 −0
Original line number Diff line number Diff line
@@ -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