netdev - Re: am335x: no multicast reception over VLAN

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Date:	Thu, 31 Mar 2016 12:16:59 +0200
From:	Yegor Yefremov <yegorslists@...glemail.com>
To:	Mugunthan V N <mugunthanvnm@...com>
Cc:	Peter Korsgaard <peter@...sgaard.com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	netdev <netdev@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	drivshin@...worx.com, ml@...kusgrimm.de
Subject: Re: am335x: no multicast reception over VLAN

On Thu, Mar 31, 2016 at 12:02 PM, Mugunthan V N <mugunthanvnm@...com> wrote:
> On Thursday 31 March 2016 01:22 PM, Yegor Yefremov wrote:
>> On Thu, Mar 31, 2016 at 8:37 AM, Mugunthan V N <mugunthanvnm@...com> wrote:
>>> On Thursday 31 March 2016 01:17 AM, Peter Korsgaard wrote:
>>>>>>>>> "Mugunthan" == Mugunthan V N <mugunthanvnm@...com> writes:
>>>>
>>>> Hi,
>>>>
>>>>  > You had received these packets as tcpdump will enable promiscuous mode
>>>>  > so that you receive all the packets from the wire.
>>>>
>>>> FYI, you can use the -p option to tcpdump to not put the interface into
>>>> promiscuous mode.
>>>>
>>>
>>> Thanks for the information Peter Korsgaard.
>>>
>>> Yegor, can you provide tcpdump using -p as well in Grygorii commands.
>>
>> Before VLAN configuration:
>>
>> # switch-config -d
>> cpsw hw version 1.12 (0)
>> 0   : type: vlan , vid = 1, untag_force = 0x3, reg_mcast = 0x3,
>> unreg_mcast = 0x0, member_list = 0x3
>> 1   : type: mcast, vid = 1, addr = ff:ff:ff:ff:ff:ff, mcast_state = f,
>> no super, port_mask = 0x3
>> 2   : type: ucast, vid = 1, addr = 74:6a:8f:00:16:12, ucast_type =
>> persistant, port_num = 0x0, Secure
>> 3   : type: vlan , vid = 0, untag_force = 0x7, reg_mcast = 0x0,
>> unreg_mcast = 0x0, member_list = 0x7
>> 4   : type: mcast, vid = 1, addr = 01:00:5e:00:00:01, mcast_state = f,
>> no super, port_mask = 0x3
>> 5   : type: vlan , vid = 2, untag_force = 0x5, reg_mcast = 0x5,
>> unreg_mcast = 0x0, member_list = 0x5
>> 6   : type: mcast, vid = 2, addr = ff:ff:ff:ff:ff:ff, mcast_state = f,
>> no super, port_mask = 0x5
>> 7   : type: ucast, vid = 2, addr = 74:6a:8f:00:16:13, ucast_type =
>> persistant, port_num = 0x0, Secure
>> 8   : type: mcast, vid = 2, addr = 01:00:5e:00:00:01, mcast_state = f,
>> no super, port_mask = 0x5
>>
>> After VLAN configuration:
>>
>> # switch-config -d
>> cpsw hw version 1.12 (0)
>> 0   : type: vlan , vid = 1, untag_force = 0x3, reg_mcast = 0x3,
>> unreg_mcast = 0x0, member_list = 0x3
>> 1   : type: mcast, vid = 1, addr = ff:ff:ff:ff:ff:ff, mcast_state = f,
>> no super, port_mask = 0x3
>> 2   : type: ucast, vid = 1, addr = 74:6a:8f:00:16:12, ucast_type =
>> persistant, port_num = 0x0, Secure
>> 3   : type: vlan , vid = 0, untag_force = 0x7, reg_mcast = 0x0,
>> unreg_mcast = 0x0, member_list = 0x7
>> 4   : type: mcast, vid = 1, addr = 01:00:5e:00:00:01, mcast_state = f,
>> no super, port_mask = 0x3
>> 5   : type: vlan , vid = 2, untag_force = 0x5, reg_mcast = 0x5,
>> unreg_mcast = 0x0, member_list = 0x5
>> 6   : type: mcast, vid = 2, addr = ff:ff:ff:ff:ff:ff, mcast_state = f,
>> no super, port_mask = 0x5
>> 7   : type: ucast, vid = 2, addr = 74:6a:8f:00:16:13, ucast_type =
>> persistant, port_num = 0x0, Secure
>> 8   : type: mcast, vid = 2, addr = 01:00:5e:00:00:01, mcast_state = f,
>> no super, port_mask = 0x5
>> 9   : type: vlan , vid = 100, untag_force = 0x0, reg_mcast = 0x5,
>> unreg_mcast = 0x0, member_list = 0x5
>> 10  : type: ucast, vid = 100, addr = 74:6a:8f:00:16:13, ucast_type =
>> persistant, port_num = 0x0
>> 11  : type: mcast, vid = 100, addr = ff:ff:ff:ff:ff:ff, mcast_state =
>> f, no super, port_mask = 0x5
>> 12  : type: mcast, vid = 2, addr = 01:80:c2:00:00:21, mcast_state = f,
>> no super, port_mask = 0x5
>>
>> During mulitcast receive:
>>
>> # switch-config -d
>> cpsw hw version 1.12 (0)
>> 0   : type: vlan , vid = 1, untag_force = 0x3, reg_mcast = 0x3,
>> unreg_mcast = 0x0, member_list = 0x3
>> 1   : type: mcast, vid = 1, addr = ff:ff:ff:ff:ff:ff, mcast_state = f,
>> no super, port_mask = 0x3
>> 2   : type: ucast, vid = 1, addr = 74:6a:8f:00:16:12, ucast_type =
>> persistant, port_num = 0x0, Secure
>> 3   : type: vlan , vid = 0, untag_force = 0x7, reg_mcast = 0x0,
>> unreg_mcast = 0x0, member_list = 0x7
>> 4   : type: mcast, vid = 1, addr = 01:00:5e:00:00:01, mcast_state = f,
>> no super, port_mask = 0x3
>> 5   : type: vlan , vid = 2, untag_force = 0x5, reg_mcast = 0x5,
>> unreg_mcast = 0x0, member_list = 0x5
>> 6   : type: mcast, vid = 2, addr = ff:ff:ff:ff:ff:ff, mcast_state = f,
>> no super, port_mask = 0x5
>> 7   : type: ucast, vid = 2, addr = 74:6a:8f:00:16:13, ucast_type =
>> persistant, port_num = 0x0, Secure
>> 8   : type: mcast, vid = 2, addr = 01:00:5e:00:00:01, mcast_state = f,
>> no super, port_mask = 0x5
>> 9   : type: vlan , vid = 100, untag_force = 0x0, reg_mcast = 0x5,
>> unreg_mcast = 0x0, member_list = 0x5
>> 10  : type: ucast, vid = 100, addr = 74:6a:8f:00:16:13, ucast_type =
>> persistant, port_num = 0x0
>> 11  : type: mcast, vid = 100, addr = ff:ff:ff:ff:ff:ff, mcast_state =
>> f, no super, port_mask = 0x5
>> 12  : type: mcast, vid = 2, addr = 01:80:c2:00:00:21, mcast_state = f,
>> no super, port_mask = 0x5
>> 13  : type: mcast, vid = 2, addr = 01:00:5e:03:1d:47, mcast_state = f,
>> no super, port_mask = 0x5
>> 14  : type: ucast, vid = 100, addr = 66:22:04:bc:90:26, ucast_type =
>> untouched , port_num = 0x2
>
> I could see multicast address 01:00:5e:03:1d:47 is added to ALE table at
> index 13, but it is added for VLAN id 2 ie eth1, did you ran the test
> for eth1 or eth1.100?

My routing table looks as follows:

# route add -net 224.0.0.0 netmask 224.0.0.0 eth1.100
# ip route show
192.168.1.0/24 dev eth1  proto kernel  scope link  src 192.168.1.233
192.168.100.0/24 dev eth1.100  proto kernel  scope link  src 192.168.100.2
192.168.254.0/24 dev eth0  proto kernel  scope link  src 192.168.254.254
224.0.0.0/3 dev eth1.100  scope link

so multicast packets should go via eth1.100

Yegor