linux-kernel - Re: [PATCH RFC] fix problems with NETIF_F

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Message-ID: <adar5nshqyr.fsf@roland-alpha.cisco.com>
Date:	Wed, 10 Mar 2010 12:17:00 -0800
From:	Roland Dreier <rdreier@...co.com>
To:	Robert Hancock <hancockrwd@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>,
	Linux-usb <linux-usb@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Subject: Re: [PATCH RFC] fix problems with NETIF_F_HIGHDMA in networking drivers v2

 > diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
 > index df3eb8c..53be462 100644
 > --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
 > +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
 > @@ -1058,7 +1058,7 @@ static void ipoib_setup(struct net_device *dev)
 >  	dev->type		 = ARPHRD_INFINIBAND;
 >  	dev->tx_queue_len	 = ipoib_sendq_size * 2;
 >  	dev->features		 = (NETIF_F_VLAN_CHALLENGED	|
 > -				    NETIF_F_HIGHDMA);
 > +				    NETIF_F_DMA_HIGH);
 >  	dev->priv_flags		&= ~IFF_XMIT_DST_RELEASE;
 >  
 >  	memcpy(dev->broadcast, ipv4_bcast_addr, INFINIBAND_ALEN);

Been meaning to mention this for a bit, but ipoib is capable of handling
any DMA address, so if I understand your patch correctly, this can be
NETIF_F_DMA_64BIT instead of just DMA_HIGH.
-- 
Roland Dreier  <rolandd@...co.com>
For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/index.html
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