With kernel 5.4.0-73-generic, gtp5g failed to decap gtp pkts larger than 144 bytes

Question

With kernel 5.4.0-73-generic, gtp5g failed to decap gtp pkts larger than 144 bytes

mmadnac1313 opened this issue 3 years ago · comments

As title, I have tested it with free5gc, and device "upfgtp" always failed to decap gtp pkts larger than 144 bytes. But it's OK with Linux kernel 5.4.0-42.
I have printed out "sk_buff->data" to kernel message, and I found "sk_buff->data" was corrupted since the byte of "next extention header type". Is there any workaround to solve this issue, instead of replacing the kernel?

Muthuraman Elangovan · Answer 1 · Fri Jun 25 2021 12:52:01 GMT+0800 (China Standard Time)

Hi @mmadnac1313,

Which codebase did you use?

This repo no longer to maintain, use the repo https://github.com/free5gc/gtp5g.

Please, consider open an issue in https://github.com/free5gc, and also attach the packet trace of GTP.

mmadnac1313 · Answer 2 · Fri Jun 25 2021 14:23:09 GMT+0800 (China Standard Time)

HI~muthuramanecs03g ,the repo https://github.com/free5gc/gtp5g. has no "issues" tab, so I am unable to submit the issue.

Muthuraman Elangovan · Answer 3 · Fri Jun 25 2021 15:10:05 GMT+0800 (China Standard Time)

Hi @mmadnac1313,

Wait some time, I will let you know how to open an issue in free5GC/gtp5g.

Muthuraman Elangovan · Answer 4 · Wed Jul 14 2021 14:24:22 GMT+0800 (China Standard Time)

Closing this issue due to no longer support this repo.'

Please, consider opening the issues in https://github.com/free5gc/gtp5g