Re: [PATCH] net: dsa: fix mv88e6xxx switches

On Sat, Jan 23, 2016 at 07:06:22PM +0000, Russell King - ARM Linux wrote:

On Sat, Jan 23, 2016 at 07:15:26PM +0100, Andrew Lunn wrote:

quoted

Thanks for digging into this.

I hope you saw v2, which is functionally identical.

No, not yet. I will go look for it.
 

quoted

I think this is a step towards a solution, but does not solve all the
problems.

e.g. I have a switch interface lan0 with the IP address
192.168.10.2. I can ping this address from another host. I then take
the IP address off the interface, create a br0 device, add lan0 to the
bridge, and put 192.168.10.2 onto the bridge. I should be able to then
ping the address. But it does not work.

That works for me.  Maybe it's differences in the switch device?  I
seem to remember you said your switch was an older generation than
mine (88E6176).

I'm testing on a 6172. But 6172 and 6176 are both in the same family
6352, and share the same driver.

root@clearfog:~# brctl show br0
bridge name     bridge id               STP enabled     interfaces
br0             8000.005043020202       no              lan1
                                                        lan2
                                                        lan3
                                                        lan4
                                                        lan5
                                                        lan6

So you initially have lan1 in an bridge. I don't.

root@370-rd:~# ip link set lan0 up                                                             
root@370-rd:~# ip addr add 192.168.10.2/24 dev lan0                                            
root@370-rd:~# ping 192.168.10.1                                                
PING 192.168.10.1 (192.168.10.1) 56(84) bytes of data.                          
64 bytes from 192.168.10.1: icmp_seq=1 ttl=64 time=1.69 ms                      
64 bytes from 192.168.10.1: icmp_seq=2 ttl=64 time=0.953 ms                     
64 bytes from 192.168.10.1: icmp_seq=3 ttl=64 time=0.926 ms    

root@370-rd:~# ip addr del 192.168.10.2/24 dev lan0
root@370-rd:~# brctl addbr br0
root@370-rd:~# brctl addif br0 lan0
root@370-rd:~# ip link set br0 up
root@370-rd:~# ip addr add 192.168.10.2/24 dev br0                              
root@370-rd:~# ping 192.168.10.1                                                
PING 192.168.10.1 (192.168.10.1) 56(84) bytes of data.                          
^C                                                                              

--- 192.168.10.1 ping statistics ---                                            

3 packets transmitted, 0 received, 100% packet loss, time 2001ms    

  Andrew