Setting IP of VLAN device (NDK and DM6437)

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Posted by Simone Cilli

on Apr 06 2012 10:45 AM

I'm working with a "hello world" code on DM6437. I need to create a VLAN and set an IP to this new "device". I can set the ip of eth0 and ping it.

I saw the chapter "A.16 Virtual LAN (VLAN) Support" in spru54_pg.pdf and I understand how i can create the device but I don't know how to set an IP.

I know It's possible in Linux. Is it possible in this platform? Any help?

All Replies

Posted by Steven Connell

on Apr 09 2012 20:56 PM

Mastermind20540 points

Hi Simone Cilli,

Which version of the NDK are you using? Also which version of BIOS?

Thanks,

Steve

Posted by Simone Cilli

on Apr 10 2012 02:17 AM

Prodigy80 points

NDK 2.0 and DSP/BIOS 5.31.02.

Simone

Posted by Steven Connell

on Apr 11 2012 16:47 PM

Mastermind20540 points

Simone,

Have you seen the NDK Client example?

This example has VLAN built into it. You don't need to configure an IP address as they will just be sent via the board's IP address. The VLAN tagged packets carry a 16-bit tag also known as the tag control information (TCI) header, which I believe is used by the stack to identify which socket data should go to.

You can use VLAN by first telneting into the board. The 'vlan' command allows you to add/delete and send on a VLAN device:

>vlan

[vlan Command]

Use this to add/del & configure VLAN Devices

vlan add <srcif> <vlan_id> <default prio>   - Adds a VLAN Device
vlan del <vlan_id_index>                    - Deletes a VLAN Device
vlan send <dst_ip>                           - Tests SO_PRIORITY option by sending packets
>
>
>
>vlan add 1 2 5
Successfully created new VLAN Device 2
>
>
>
>vlan send 146.252.161.73
TEST Case Passed: Priority 0x8 is incorrect and was detected
Packet with priority 0 has been sent
Packet with priority 1 has been sent
Packet with priority 2 has been sent
Packet with priority 3 has been sent
Packet with priority 4 has been sent
Packet with priority 5 has been sent
Packet with priority 6 has been sent
Packet with priority 7 has been sent
Packet with default priority has been sent

Steve

Posted by Simone Cilli

on Apr 12 2012 02:26 AM

Prodigy80 points

The problem is that my requirements said I have to use different IP for each VLAN on the same network interface....
Can I conclude It is impossible to set different IPs on the VLANs on this board?!

Anyway Thanks for your help!

Simone

Posted by Simone Cilli

on Apr 12 2012 05:11 AM

Prodigy80 points

Following the example you suggest, we tried to modify the VLAN ip.
We obtain this error:
"BindNew: Duplicate bindings ignored"

This is the code we apply to the vlan project (NDK 2.0):

File convlan.c:

static void CmdVLANAdd(char *tok1, char *tok2, char *tok3){

mmZeroInit (&nimu_ifreq, sizeof(NIMU_IF_REQ));

nimu_ifreq.index = vlan_dev_index;

if (NIMUIoctl (NIMU_GET_DEVICE_HANDLE, &nimu_ifreq, &hIF_vlan1, sizeof(HANDLE)) < 0){

ConPrintf ("NIMUIoctl error\n");

return;

}

//If-1 ip: 192.168.0.144

//If-1 subnet_mask: 255.255.255.0

ipn = inet_addr(vlan1_ip); //vlan1_ip: 192.168.1.144

ipmask = inet_addr(vlan1_sm); //vlan1_subnetmask: 255.255.255.0

BindNew(hIF_vlan1, ipn, ipmask);

NtIPN2Str(ipn, (char *)ip_str);

ConPrintf ("VLAN - set ip: %s\n", ip_str);

return;

}

Posted by Steven Connell

on Apr 12 2012 19:57 PM

Verified Answer

Verified by David Friedland

Mastermind20540 points

Simone,

I think what you need to do is first get 2 IP addresses working on a single interface. Then, once you have that working, you should be able to configure VLAN for each one.

Please see the following post in which a customer was able to do this, it may help you. Note, however, that he had to make each IP address on a different sub net

Steve

http://e2e.ti.com/support/embedded/bios/f/355/t/168240.aspx#613886