netdev - Re: [git patches] net driver updates

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Date:	Mon, 11 Feb 2008 12:07:39 -0800
From:	Divy Le Ray <divy@...lsio.com>
To:	Jeff Garzik <jeff@...zik.org>
CC:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [git patches] net driver updates

Jeff Garzik wrote:
> Mostly fixes, a few cleanups (generally assisting fixes), and an
> exception for PS3 wireless because it had been posted, reviewed and
> acked for a while, just not committed.
>
> Please pull from 'upstream-davem' branch of
> master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6.git upstream-davem
>
> to receive the following updates:
>
>  
>  drivers/net/cxgb3/sge.c          |   35 +-
>   
>  
> diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
> index 9ca8c66..979f3fc 100644
> --- a/drivers/net/cxgb3/sge.c
> +++ b/drivers/net/cxgb3/sge.c
> @@ -1059,6 +1059,14 @@ static void write_tx_pkt_wr(struct adapter *adap, struct sk_buff *skb,
>  			 htonl(V_WR_TID(q->token)));
>  }
>  
> +static inline void t3_stop_queue(struct net_device *dev, struct sge_qset *qs,
> +				 struct sge_txq *q)
> +{
> +	netif_stop_queue(dev);
> +	set_bit(TXQ_ETH, &qs->txq_stopped);
> +	q->stops++;
> +}
> +
>  /**
>   *	eth_xmit - add a packet to the Ethernet Tx queue
>   *	@skb: the packet
> @@ -1090,31 +1098,18 @@ int t3_eth_xmit(struct sk_buff *skb, struct net_device *dev)
>  	ndesc = calc_tx_descs(skb);
>  
>  	if (unlikely(credits < ndesc)) {
> -		if (!netif_queue_stopped(dev)) {
> -			netif_stop_queue(dev);
> -			set_bit(TXQ_ETH, &qs->txq_stopped);
> -			q->stops++;
> -			dev_err(&adap->pdev->dev,
> -				"%s: Tx ring %u full while queue awake!\n",
> -				dev->name, q->cntxt_id & 7);
> -		}
> +		t3_stop_queue(dev, qs, q);
> +		dev_err(&adap->pdev->dev,
> +			"%s: Tx ring %u full while queue awake!\n",
> +			dev->name, q->cntxt_id & 7);
>  		spin_unlock(&q->lock);
>  		return NETDEV_TX_BUSY;
>  	}
>  
>  	q->in_use += ndesc;
> -	if (unlikely(credits - ndesc < q->stop_thres)) {
> -		q->stops++;
> -		netif_stop_queue(dev);
> -		set_bit(TXQ_ETH, &qs->txq_stopped);
> -#if !USE_GTS
> -		if (should_restart_tx(q) &&
> -		    test_and_clear_bit(TXQ_ETH, &qs->txq_stopped)) {
> -			q->restarts++;
> -			netif_wake_queue(dev);
> -		}
> -#endif
> -	}
> +	if (unlikely(credits - ndesc < q->stop_thres))
> +		if (USE_GTS || !should_restart_tx(q))
> +			t3_stop_queue(dev, qs, q);
>  
>  	gen = q->gen;
>  	q->unacked += ndesc;
>   
Hi Jeff,

I thought I had NAK'ed the patch modifying sge.c from Krishna Kumar.
Looking back at my answer at the time, I was obviously unclear.
Can you please revert the drivers/net/cxgb3sge.c change ?

Cheers,
Divy

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