Linux Ethernet Bridging - Apr 2007 - [Bridge] Possibility of copying over fdb entries.

Hi, all,

I wish to copy over fdb(forwarding database  entries) learnt over from 
one interface  onto  as  they are from another interface.

Like for eg :
 brctl showmacs br0
port no mac addr                is local?       ageing timer
  1     00:30:1a:01:6f:e4       no                 0.46
  1     00:30:1a:1c:3d:b7       yes                0.00
  2     00:30:1a:1c:3d:b8       yes                0.00

Instead of the above in line 1 if i wish to forcefully add mac  "  
00:30:1a:01:6f:e4 "  from port 2 instated of port 1.


Do i need to create a separate ioctl for it from the brctl to the kernel 
code or is thier some provision for doing it.


Regards,
Munro.

On Tue, 28 Jun 2005 14:40:34 +0800
munro <munro.biswal@smartbridges.com> wrote:
> 
> 
> Hi, all,
> 
> I wish to copy over fdb(forwarding database  entries) learnt over from 
> one interface  onto  as  they are from another interface.
> 
> Like for eg :
>  brctl showmacs br0
> port no mac addr                is local?       ageing timer
>   1     00:30:1a:01:6f:e4       no                 0.46
>   1     00:30:1a:1c:3d:b7       yes                0.00
>   2     00:30:1a:1c:3d:b8       yes                0.00
> 
> Instead of the above in line 1 if i wish to forcefully add mac  "  
> 00:30:1a:01:6f:e4 "  from port 2 instated of port 1.
Why? What reason.
> Do i need to create a separate ioctl for it from the brctl to the kernel 
> code or is thier some provision for doing it.
Since all enhancements can be 2.6 only,
I would prefer a sysfs interface to an ioctl to do this.
You can add a store/write interface to /sys/class/net/brX/bridge/brforward
file.  The creative part is figuring out what the semantics should
be and getting the locking right.