Subject: Re: [PATCH net] tg3: Expand 4g_overflow_test workaround to skb fragments of any size.

From: Nithin Nayak Sujir <[email-masked]>
Date: Thu, 19 Dec 2013 17:33:31 -0800

>> -	return (base > 0xffffdcc0) && (base + len + 8 < base);
>> +	return (base + len + 8 < base);
>>   }
>
> And it is actually faster ;)
>
> What is 8 value exactly ?
>
>

Some older devices needed to be at least 8 bytes away from the boundary. For 
simplicity we use the same check for all devices.