netdev - Re: [PATCH 05/10] Add divisor.

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Message-ID: <47015CC8.2080507@fatooh.org>
Date:	Mon, 01 Oct 2007 13:47:04 -0700
From:	Corey Hickey <bugfood-ml@...ooh.org>
To:	Patrick McHardy <kaber@...sh.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH 05/10] Add divisor.

Patrick McHardy wrote:
> Corey Hickey wrote:
>> Make hash divisor user-configurable.
>>
> 
>> @@ -120,7 +121,7 @@ static __inline__ unsigned sfq_fold_hash(struct sfq_sched_data *q, u32 h, u32 h1
>>  	/* Have we any rotation primitives? If not, WHY? */
>>  	h ^= (h1<<pert) ^ (h1>>(0x1F - pert));
>>  	h ^= h>>10;
>> -	return h & 0x3FF;
>> +	return h & (q->hash_divisor-1);
> 
> 
> This assumes that hash_divisor is a power of two, but this is
> not enforced anywhere.

Ok. I'll move that part from userspace to the kernel. That should be 
better anyway.

-Corey
-
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