RTOS: NDK - UDP fragmentation

HRi

Guru 10750 points

Tool/software: TI-RTOS

Hi,

I'm trying to send a multicast packet size 1801B, I have enlarged the send buffer

"i = 8192;

setsockopt(socketMultiCast, SOL_SOCKET, SO_SNDBUF, &i, sizeof(int));"

On the nimu.c -> NIMUSendPacket function I get twice one with pPkt->ValidLen = 1530 and one with pPkt->ValidLen = 347 but on the WireShark I get only the message with the 347B fragmented why am I not getting the second one?

I'm using NDK 2.24.0.11,

Many Thanks,

over 9 years ago

Gerardo Gomez Martinez over 9 years ago

TI__Expert 5825 points

Hi HR,

It looks like you are hitting a know bug on that version of the NDK. A design bug in the ARP layer due to queue length of 1, you can read more about it here:

https://e2e.ti.com/support/embedded/tirtos/f/355/p/372023/1314892#pi317008=1

This has been fixed in NDK 2.24.01.13.

Thanks,
Gerardo

HRi over 9 years ago in reply to Gerardo Gomez Martinez

Guru 10750 points

Hi Gerardo,

I'm getting the same behavior with NDK 2.24.2.31 (I assume it includes the 2.24.01.13 fixes), anything else I'm doing wrong?

Thanks,

Gerardo Gomez Martinez over 9 years ago in reply to HRi

TI__Expert 5825 points

HR,

Yea that version should include the fixes. What device are you using? Also would you mind providing your project or some of your code so we can see if the error may be somwehere else?

Thanks,
Gerardo

HRi over 9 years ago in reply to Gerardo Gomez Martinez

Guru 10750 points

Gerardo,

I'm using the TDA3x, running the app. on M40, one thing to add I'm using multicast address, I have seen I'm getting to the fregment loop which sends two packets but just one goes out, I will prepare a project,

Thanks,

Gerardo Gomez Martinez over 9 years ago in reply to HRi

TI__Expert 5825 points

HR,

Could you also attach the generated linker file (*.xdl)?

Thanks,
Gerardo

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RTOS: NDK - UDP fragmentation