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Re: [PATCH] introduce WEXT scan capabilities

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From: Dan Williams <dcbw@xxxxxxxxxx>
Date: Fri, 07 Dec 2007 19:22:46 -0500

> @@ -1040,6 +1049,16 @@ struct	iw_range
>  	 * because each entry contain its channel index */
>  
>  	__u32		enc_capa;	/* IW_ENC_CAPA_* bit field */
> +
> +	/* Do *NOT* use those fields, they are just used as padding to get
> +	 * proper alignement with user space */
> +	__s32		reserved1;
> +	__s32		reserved2;
> +	__u16		reserved3;
> +	__s32		reserved4;
> +	__u32		reserved5;
> +
> +	__u32		scan_capa;	/* IW_SCAN_CAPA_* bit field */
>  };
>  
>  /*

Major NACK.  These datastructure usages are complete wrong, and
we have to stop spreading this problem instead of continuing on
with it as if it's OK.

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