ORAN FH CUS – SE 19 decodes beamId twice when disableBFWs = 1

asked 2025-08-13 07:52:20 +0000

Quydgg
3 ●1 ●1

I cannot decode successfully ORAN packet with SE19 because of malformed error, the Beam ID is decoded twice. I also check the source code and notice that beamId is decoded twice when disableBFWs is set in epan/dissectors/packet-oran.c.

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Please review https://gitlab.com/wireshark/wireshar...

I guess I didn't actually test SE19 with !disableBFWs

MartinM ( 2025-08-13 16:55:46 +0000 )edit

Thank you very much Martin, it works for me now.

Quydgg ( 2025-08-14 02:01:33 +0000 )edit

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answered 2025-08-13 13:48:57 +0000

MartinM
212 ●19 ●10

Thanks, will be fixed in https://gitlab.com/wireshark/wireshar...

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That change is now merged, should be available after a while in e.g., https://www.wireshark.org/download/au...

Bug reports are very welcome, as are merge requests!

MartinM ( 2025-08-13 14:24:28 +0000 )edit

Thank you very much!

Quydgg ( 2025-08-13 15:03:16 +0000 )edit

By the way, the bfwCompHdr parameter should not be decoded when disableBFWs = 1. Please check.

"7.7.19.7 bfwCompHdr If 'repetition =1' or 'disableBFWs=1' beamforming weights are not present in the extension, and hence 'bfwComHdr' parameter is also not present in the extension header."

Quydgg ( 2025-08-13 15:19:20 +0000 )edit

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ORAN FH CUS – SE 19 decodes beamId twice when disableBFWs = 1

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