From: Or Gerlitz Date: Sat, 14 Jun 2008 01:12:00 +0000 (-0700) Subject: net/core: add NETDEV_BONDING_FAILOVER event X-Git-Tag: v2.6.27-rc1~969^2~289^2~5 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c1da4ac752b8b0411791d26c678fcf23d2eed242;p=linux-2.6 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 Signed-off-by: Jay Vosburgh Signed-off-by: Jeff Garzik --- diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f27fd20093..e92fc839ab 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 0ff6224d17..bd3d72ddf3 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 68d8df0992..0e45742e71 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