linux-kernel - Re: [PATCH 1/1] netdev/ethernet: dev_alloc_skb to netdev_alloc

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Date:	Sat, 21 Jan 2012 16:53:58 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	"Pradeep A. Dalvi" <netdev@...deepdalvi.com>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] netdev/ethernet: dev_alloc_skb to netdev_alloc_skb

Le samedi 21 janvier 2012 à 20:13 +0530, Pradeep A. Dalvi a écrit :
> Replaced deprecating dev_alloc_skb with netdev_alloc_skb in drivers/net/ethernet
> 
> Signed-off-by: Pradeep A. Dalvi <netdev@...deepdalvi.com>
> ---

...

>  114 files changed, 257 insertions(+), 203 deletions(-)
> 
> diff --git a/drivers/net/ethernet/3com/3c501.c b/drivers/net/ethernet/3com/3c501.c
> index 68da81d..9ebc739 100644
> --- a/drivers/net/ethernet/3com/3c501.c
> +++ b/drivers/net/ethernet/3com/3c501.c
> @@ -702,7 +702,7 @@ static void el_receive(struct net_device *dev)
>  	 */
>  
>  	outb(AX_SYS, AX_CMD);
> -	skb = dev_alloc_skb(pkt_len+2);
> +	skb = netdev_alloc_skb(dev, pkt_len + NET_IP_ALIGN);
>  
>  	/*
>  	 *	Start of frame
> diff --git a/drivers/net/ethernet/3com/3c509.c b/drivers/net/ethernet/3com/3c509.c


So the very first chunk of this huge patch is wrong, since it adds a
true bug.  (You dont change the skb_reserve(skb, 2); later)

I stopped my review at this first chunk.

Please dont add NET_IP_ALIGN on drivers if you cant test the change
yourself.
 
Some hardware really need the hardcoded 2 value.



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