From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH v9] tilegx network driver: initial support
Date: Wed, 06 Jun 2012 19:31:40 +0200
Message-ID: <1339003900.26966.24.camel@edumazet-glaptop>
References: <201205201636.q4KGaoA3003845@farm-0027.internal.tilera.com>
	 <20120520.165546.1211013675964130504.davem@davemloft.net>
	 <201205240115.q4O1FwqG006336@lab-41.internal.tilera.com>
	 <20120524.003148.700603156196416506.davem@davemloft.net>
	 <201205251853.q4PIrE7T000723@lab-41.internal.tilera.com>
	 <201206042023.q54KNEZp003834@farm-0002.internal.tilera.com>
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Cc: bhutchings@solarflare.com, arnd@arndb.de,
	David Miller <davem@davemloft.net>,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org
To: Chris Metcalf <cmetcalf@tilera.com>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <201206042023.q54KNEZp003834@farm-0002.internal.tilera.com>
Sender: linux-kernel-owner@vger.kernel.org
List-Id: netdev.vger.kernel.org

On Mon, 2012-06-04 at 16:12 -0400, Chris Metcalf wrote:
> This change adds support for the tilegx network driver based on the
> GXIO IORPC support in the tilegx software stack, using the on-chip
> mPIPE packet processing engine.

> +static void tile_net_setup(struct net_device *dev)
> +{
> +	ether_setup(dev);
> +	dev->netdev_ops = &tile_net_ops;
> +	dev->watchdog_timeo = TILE_NET_TIMEOUT;
> +	dev->features |= NETIF_F_LLTX;
> +	dev->features |= NETIF_F_HW_CSUM;
> +	dev->features |= NETIF_F_SG;
> +	dev->features |= NETIF_F_TSO;
> +	dev->tx_queue_len = 0;
> +	dev->mtu = 1500;
> +}

Why is tx_queue_len set to 0 ?