netdev - Re: [PATCH] gianfar: fix headroom expansion code

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Date:	Fri, 27 Mar 2009 16:06:27 +0800
From:	Li Yang <leoli@...escale.com>
To:	David Miller <davem@...emloft.net>
Cc:	shemminger@...tta.com, netdev@...r.kernel.org
Subject: Re: [PATCH] gianfar: fix headroom expansion code

On Fri, Mar 27, 2009 at 3:39 PM, David Miller <davem@...emloft.net> wrote:
> From: Li Yang <leoli@...escale.com>
> Date: Fri, 27 Mar 2009 12:26:33 +0800
>
>> We have legacy devices without the offloading feature.  And we can
>> even turn off the IP checksum offloading at runtime.  Your code will
>> cause unnecessary realloc for these cases.
>>
>> I can propose a new patch to fix the pointer problem and add more
>> error handling.
>
> I'm applying Stephen's patch for now, please send any improvements
> relative to that.

Ok.

However is it ok to use kfree() instead of kfree_skb() in Stephen's patch?

+               skb_new = skb_realloc_headroom(skb, GMAC_FCB_LEN);
+               if (!skb_new) {
+                       dev->stats.tx_errors++;
+                       kfree(skb);
+                       return NETDEV_TX_OK;
+               }

- Leo
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