TDA4VL-Q1: [ICMP_Ipv4]

Emad Halim

Part Number: TDA4VL-Q1
Other Parts Discussed in Thread: TDA4VL

Hello ,

I need to know why is the ICMP size is limited to 60 bytes , please support if there is any option to increase the packet size to be 64 bytes .

over 1 year ago

0 Doredla Sudheer Kumar over 1 year ago

TI__Guru 63470 points

Hi,

May I know which SDK version you are using and also the Ethernet application running?

Emad Halim said:
I need to know why is the ICMP size is limited to 60 bytes

When you send ping (ICMP) request message it will send the packet with 64 bytes out of NIC.

Can you please share the packet capture as well (from Wireshark)

Best Regards,
Sudheer

0 Emad Halim over 1 year ago in reply to Doredla Sudheer Kumar

Prodigy 50 points

Hi ,

we use 8.4 SDK version , what do you mean by the Ethernet application?

0 Doredla Sudheer Kumar over 1 year ago in reply to Emad Halim

TI__Guru 63470 points

Hi,

Emad Halim said:
what do you mean by the Ethernet application?

ICMP messages via CPSW you are talking right?
If so, I am asking the CPSW driver running is Native Linux Driver or AUTOSAR MACL?

But, if any case packet size will be >=64 bytes.

Emad Halim said:
I need to know why is the ICMP size is limited to 60 bytes

Where you have seen ICMP size is limited to 60 bytes? Please share more details.
Also, perform ICMP test and confirm is your understanding of 60 bytes ICMP packet size is observed or not?
I have checked at my end by connecting CPSW2G to PC and ran Native Linux Driver (default enabled from Linux SDK for MCU CPSW2G), packet size >=64 bytes.

Best Regards,
Sudheer

0 Emad Halim over 1 year ago in reply to Doredla Sudheer Kumar

Prodigy 50 points

Hello ,

we use the AUTOSAR MCAL ,

about the 60 bytes, I attached a screenshot of the ICMP test , please check the top left marker .

0 Doredla Sudheer Kumar over 1 year ago in reply to Emad Halim

TI__Guru 63470 points

Hi,

It could due to the CRC of Ethernet packet (4 bytes) removed by NIC while passing to application.
You can check byte count from CPSW External port Tx byte count (octet count) statistics, how many bytes transferred by CPSW.
Similarly we have Rx byte count (octet count) as well.

Send only ICMP request and check above CPSW Tx, Rx statistics counter of octet count will provide you the no.of bytes the packet has.

Best Regards,
Sudheer

0 Emad Halim over 1 year ago in reply to Doredla Sudheer Kumar

Prodigy 50 points

The Ethernet version is 8.6.

0 Doredla Sudheer Kumar over 1 year ago in reply to Emad Halim

TI__Guru 63470 points

Hi,

Can you please check above my comment and capture CPSW statistics and confirm.

Best Regards,
Sudheer

0 Emad Halim over 1 year ago in reply to Doredla Sudheer Kumar

Prodigy 50 points

could you please clarify what do you mean by the NIC and the CPSW?

0 Emad Halim over 1 year ago in reply to Doredla Sudheer Kumar

Prodigy 50 points

This check box must be enabled to add the 4 bytes of the CRC and then the total packet size will be 64 instead of 60?

0 Doredla Sudheer Kumar over 1 year ago in reply to Emad Halim

TI__Guru 63470 points

Hi,

Emad Halim said:
could you please clarify what do you mean by the NIC and the CPSW?

CPSW is SOC side Ethernet interface.
NIC I mean from PC point of view where you are running the ICMP command.

I mean send ICMP request from Test PC to TDA4VL CPSW and check Rx Statistics of CPSW and for response check Tx statistics of CPSW.
Please refer to TRM (Register details) from SOC page, for the information about CPSW statistics.

Best Regards,
Sudheer

0 Doredla Sudheer Kumar over 1 year ago in reply to Emad Halim

TI__Guru 63470 points

Hi,

I am not sure about the tool you are using.
I can't comment on check box.

Best Regards,
Sudheer

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TDA4VL-Q1: [ICMP_Ipv4]