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Date:	Thu, 08 Nov 2007 08:45:31 -0500
From:	jamal <>
To:	Radu Rendec <>
Subject: Re: [PATCH] [PKT_SCHED] CLS_U32: Use ffs() instead of C code on
	hash mask to get first set bit.

On Thu, 2007-08-11 at 13:07 +0200, Radu Rendec wrote:
> Computing the rank of the first set bit in the hash mask (for using later
> in u32_hash_fold()) was done with plain C code. Using ffs() instead makes
> the code more readable and improves performance (since ffs() is better
> optimized in assembler).
> Using the conditional operator on hash mask before applying ntohl() also
> saves one ntohl() call if mask is 0.
> Signed-off-by: Radu Rendec <>

Acked-by: Jamal Hadi Salim <>


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