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Commit 61bd3857 authored by Moni Shoua's avatar Moni Shoua Committed by David S. Miller
Browse files

net/core: Add event for a change in slave state 



Add event which provides an indication on a change in the state
of a bonding slave. The event handler should cast the pointer to the
appropriate type (struct netdev_bonding_info) in order to get the
full info about the slave.

Signed-off-by: default avatarMoni Shoua <monis@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 251c005a

include/linux/netdevice.h

+15 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ 
#include <linux/netdev_features.h>

#include <linux/neighbour.h>

#include <uapi/linux/netdevice.h>

#include <uapi/linux/if_bonding.h>



struct netpoll_info;

struct device;
@@ -2056,6 +2057,7 @@ struct pcpu_sw_netstats { 
#define NETDEV_RESEND_IGMP	0x0016

#define NETDEV_PRECHANGEMTU	0x0017 /* notify before mtu change happened */

#define NETDEV_CHANGEINFODATA	0x0018

#define NETDEV_BONDING_INFO	0x0019



int register_netdevice_notifier(struct notifier_block *nb);

int unregister_netdevice_notifier(struct notifier_block *nb);
@@ -3494,6 +3496,19 @@ struct sk_buff *__skb_gso_segment(struct sk_buff *skb, 
struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,

				    netdev_features_t features);



struct netdev_bonding_info {

	ifslave	slave;

	ifbond	master;

};



struct netdev_notifier_bonding_info {

	struct netdev_notifier_info info; /* must be first */

	struct netdev_bonding_info  bonding_info;

};



void netdev_bonding_info_change(struct net_device *dev,

				struct netdev_bonding_info *bonding_info);



static inline

struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features)

{

net/core/dev.c

+20 −0
Original line number Diff line number Diff line
@@ -5355,6 +5355,26 @@ void netdev_upper_dev_unlink(struct net_device *dev, 
}

EXPORT_SYMBOL(netdev_upper_dev_unlink);



/**

 * netdev_bonding_info_change - Dispatch event about slave change

 * @dev: device

 * @netdev_bonding_info: info to dispatch

 *

 * Send NETDEV_BONDING_INFO to netdev notifiers with info.

 * The caller must hold the RTNL lock.

 */

void netdev_bonding_info_change(struct net_device *dev,

				struct netdev_bonding_info *bonding_info)

{

	struct netdev_notifier_bonding_info	info;



	memcpy(&info.bonding_info, bonding_info,

	       sizeof(struct netdev_bonding_info));

	call_netdevice_notifiers_info(NETDEV_BONDING_INFO, dev,

				      &info.info);

}

EXPORT_SYMBOL(netdev_bonding_info_change);



void netdev_adjacent_add_links(struct net_device *dev)

{

	struct netdev_adjacent *iter;

net/core/rtnetlink.c

+1 −0
Original line number Diff line number Diff line
@@ -3180,6 +3180,7 @@ static int rtnetlink_event(struct notifier_block *this, unsigned long event, voi 
	case NETDEV_UNREGISTER_FINAL:

	case NETDEV_RELEASE:

	case NETDEV_JOIN:

	case NETDEV_BONDING_INFO:

		break;

	default:

		rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL);