Bug 2655 – A-MPDU simulation using TCP sometimes fails with message "Packet has no Traffic ID"

Bug 2655 - A-MPDU simulation using TCP sometimes fails with message "Packet has no Traffic ID"


Summary:	A-MPDU simulation using TCP sometimes fails with message "Packet has no Traff...

Status:	RESOLVED FIXED

Product:	ns-3
Classification:	Unclassified
Component:	wifi
Version:	ns-3-dev
Hardware:	All All

Importance:	P3 major
Assigned To:	sebastien.deronne

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2017-02-10 06:51 UTC by sebastien.deronne
Modified:	2017-02-11 15:14 UTC (History)
CC List:	1 user (show)

See Also:

Attachments
Forbid to send ACK using A-MPDU (647 bytes, patch) 2017-02-11 09:50 UTC, sebastien.deronne	Details \| Diff
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Description sebastien.deronne 2017-02-10 06:51:23 UTC

I will provide simulation script a bit later, but I encounter quite often this failure when I run A-MPDU examples with TCP traffic:

msg="Packet has no Traffic ID", file=../src/wifi/model/qos-utils.cc, line=163
terminate called without an active exception

I am not sure whether this is a really wifi issue or not (not seen with UDP), I will investigate and re-assign if needed.

Comment 1 sebastien.deronne 2017-02-11 09:50:46 UTC

Created attachment 2782 [details]
Forbid to send ACK using A-MPDU

This is well a wifi bug, caused in different simulation scenarios using TCP (but maybe some UDP cases as well), and occurs when it tries to send an ACK using ... A-MPDU! 
Fix is in attachment.

Comment 2 sebastien.deronne 2017-02-11 09:51:06 UTC

Should be delivered to the mainstream ASAP

Comment 3 sebastien.deronne 2017-02-11 15:14:23 UTC

Fixed in changeset 12679:b60b7708bd2c