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MCU-PLUS-SDK-AM263X: Issues using TSN stack alonside lwip sockets library

Hudson Ayers
Prodigy 30 points
Part Number: MCU-PLUS-SDK-AM263X
I am finding that there are issues when using TI's tsn stack from the mcu-plus-sdk when an app also includes the lwip sockets library. For example, source/tsn/tsn_stack/tsn_combase/tilld/cb_lld_ethernet.h redefines IFNAMSIZ to 16 from LWIP's default of 6, and then relies on that length later (since the tilld0 / tilld1 names require a length of 7 to differentiate from each other). The same file also redefines `struct sockaddr` with a different definition.
This can be straightforwardly reproduced in the TI SDK by adding `#include "lwip/sockets.h"` to tsnapp_lwip_cpsw_main.c and then building the gptp_lwip_cpsw example. 
Are there plans in a future release to support the TSN stack alongside use of the LWIP sockets library? Should we not be attempting to use the library in this way?
  • 0
    TI__Genius 16382 points

    Hi Hudson,

    Hudson Ayers said:
    I am finding that there are issues when using TI's tsn stack from the mcu-plus-sdk when an app also includes the lwip sockets library

    This is a valid bug that has been reported to the Networking team and is being tracked (MCUSDK-13225). Right now the TSN stack seems to be re-using a lot of macros and entities as observed and reported by you. 

    Hudson Ayers said:
    Are there plans in a future release to support the TSN stack alongside use of the LWIP sockets library? Should we not be attempting to use the library in this way?

    The official fix version is 10.00.00 SDK release (Mid August, 2024). For now, if possible I recommend using other functionality and APIs of the lwIP stack (other than Socket APIs).

    Regards,
    Shaunak

  • 0 in reply to Shaunak Deshpande
    Prodigy 30 points

    Hi Shaunak,

    Is there anywhere that I can find more information about MCUSDK-13225? Is there a bug tracker somewhere I can follow? Has it been reported elsewhere on this forum as well?

    Does the networking team have any other mitigations they can suggest while we wait for the next release? I am happy to make direct patches to the SDK source if required.

  • 0 in reply to Hudson Ayers
    TI__Genius 16382 points

    Hi Hudson,

    Hudson Ayers said:
    Is there anywhere that I can find more information about MCUSDK-13225? Is there a bug tracker somewhere I can follow? Has it been reported elsewhere on this forum as well?

    The MCUSDK-13225 is an internal JIRA ticket I logged in this thread for internal tracking purposes. It will not be accessible to you.

    Hudson Ayers said:
    Does the networking team have any other mitigations they can suggest while we wait for the next release? I am happy to make direct patches to the SDK source if required.

    The official fix version is 10.00 but If I do get the changes or a PR/Branch, I will create a patch and share it with you before the end of next week. I think the changes will mostly be related to file structure change and variables/macros being renamed but I am not sure on the exact changes and that will be coming from the networking team.

    Regards,
    Shaunak

  • 0 in reply to Shaunak Deshpande
    TI__Genius 16382 points

    Hi Hudson,

    Apologies for a delayed response.

    Please find below the patch to fix this issue. Paste this patch file inside source/networking/tsn/tsn-stack and in git-bash run the following command "git apply <patch-file-name>"

    https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/908/0001_2D00_allsocs_2D00_TSN_2D00_Fix_2D00_conflict_2D00_b_2D00_w_2D00_LWIP_2D00_and_2D00_TSN_2D00_CB_2D00_Etherne.patch

    I have tested it and saw no issues with the same on 09.02 MCU_PLUS_SDK for am263x.

    If you face any other issues, feel free to raise another E2E for the same

    Regards,
    Shaunak