Bug 731 – Send function in point-to-point-net-device fails to check the return value of the Dequeue function

Bug 731 - Send function in point-to-point-net-device fails to check the return value of the Dequeue function


Summary:	Send function in point-to-point-net-device fails to check the return value of...

Status:	RESOLVED FIXED

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

Importance:	P5 normal
Assigned To:	Craig Dowell

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2009-10-26 05:44 EDT by Alberto Blanc
Modified:	2010-02-05 13:11 EST (History)
CC List:	3 users (show)

See Also:

Attachments
patch to fix (1.28 KB, patch) 2010-01-08 18:33 EST, Tom Henderson	Details \| Diff
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Description Alberto Blanc 2009-10-26 05:44:36 EDT

In the Send function when the queue is empty (m_txMachineState == READY) a packet is queued and then immediately dequeued (comments explain that this is done in order to hit all the tracing hooks) but the return value of the Dequeue function is not checked.  If the Enqueue function decides to drop the packet the program exits with code -11 (while it's true that dropping a packet when it's the only one in the queue is probably not the most obvious solution, it is possible to come with cases where this could be reasonable).

Comment 1 Tom Henderson 2010-01-08 18:33:07 EST

Created attachment 714 [details]
patch to fix

Craig, please review.  Passes all tests.

Comment 2 Faker Moatamri 2010-01-27 08:55:11 EST

Craig please review and commit if ok.

Comment 3 Craig Dowell 2010-02-05 13:11:07 EST

changeset bd6c06ad0f41