From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jay Vosburgh Subject: [PATCH 1/5] net/core: add NETDEV_BONDING_FAILOVER event Date: Fri, 13 Jun 2008 18:12:00 -0700 Message-ID: <12134059253135-git-send-email-fubar@us.ibm.com> References: <12134059242107-git-send-email-fubar@us.ibm.com> Cc: Jeff Garzik , David Miller , Or Gerlitz , Jay Vosburgh To: netdev@vger.kernel.org Return-path: Received: from e33.co.us.ibm.com ([32.97.110.151]:46263 "EHLO e33.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757596AbYFNBMR (ORCPT ); Fri, 13 Jun 2008 21:12:17 -0400 Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by e33.co.us.ibm.com (8.13.8/8.13.8) with ESMTP id m5E1C6BK007591 for ; Fri, 13 Jun 2008 21:12:06 -0400 Received: from d03av04.boulder.ibm.com (d03av04.boulder.ibm.com [9.17.195.170]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v9.0) with ESMTP id m5E1C6b5178950 for ; Fri, 13 Jun 2008 19:12:06 -0600 Received: from d03av04.boulder.ibm.com (loopback [127.0.0.1]) by d03av04.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m5E1C50L030207 for ; Fri, 13 Jun 2008 19:12:06 -0600 In-Reply-To: <12134059242107-git-send-email-fubar@us.ibm.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Or Gerlitz 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 --- 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 5829630..da8367c 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -960,6 +960,12 @@ 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 -- 1.5.2.4