netdev - about tx_queue_len for phonet driver

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Date:	Thu, 12 Jan 2012 11:45:48 +0100
From:	Hemant-vilas RAMDASI <hemant.ramdasi@...ricsson.com>
To:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Rémi Denis-Courmont 
	<remi.denis-courmont@...ia.com>
Subject: about tx_queue_len for phonet driver

Hi,

Can anyone guide me about when should a network driver set tx_queue_len to 0?
We are facing a network congestion issue with phonet packets where one of the control message packet is dropped because of congestion. In our phonet network driver the tx_queue_len is set to 3 (taken from usb-phonet mostly). If phonet cannot handle packet-drop (for pipe messages), then should network driver always set tx_queue_len as 0?

Regards,
Hemant

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