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[BRIDGE]: netlink interface for link management

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Add basic netlink support to the Ethernet bridge. Including:
 * dump interfaces in bridges
 * monitor link status changes
 * change state of bridge port

For some demo programs see:
	http://developer.osdl.org/shemminger/prototypes/brnl.tar.gz

These are to allow building a daemon that does alternative
implementations of Spanning Tree Protocol.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
2006-05-25 16:00:12 -07:00
committed by David S. Miller
parent c090971326
commit 11dc1f36a6
6 changed files with 214 additions and 2 deletions
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4
net/bridge/br_stp_if.c
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@ -16,6 +16,7 @@
#include <linux/kernel.h>
#include <linux/smp_lock.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include "br_private.h"
#include "br_private_stp.h"
@ -86,6 +87,7 @@ void br_stp_disable_bridge(struct net_bridge *br)
void br_stp_enable_port(struct net_bridge_port *p)
{
br_init_port(p);
br_ifinfo_notify(RTM_NEWLINK, p);
br_port_state_selection(p->br);
}
@ -99,6 +101,8 @@ void br_stp_disable_port(struct net_bridge_port *p)
printk(KERN_INFO "%s: port %i(%s) entering %s state\n",
br->dev->name, p->port_no, p->dev->name, "disabled");
br_ifinfo_notify(RTM_DELLINK, p);
wasroot = br_is_root_bridge(br);
br_become_designated_port(p);
p->state = BR_STATE_DISABLED;