netdev - Re: [PATCH net-next] ipv6: Use FIELD_SIZEOF() instead of dummy variable.

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Date:	Thu, 10 Jan 2013 01:56:33 +0900
From:	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
To:	David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>
CC:	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Subject: Re: [PATCH net-next] ipv6: Use FIELD_SIZEOF() instead of dummy variable.

YOSHIFUJI Hideaki wrote:
> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
> ---
>  net/ipv6/af_inet6.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
> index b043c60..6b793bf 100644
> --- a/net/ipv6/af_inet6.c
> +++ b/net/ipv6/af_inet6.c
> @@ -811,11 +811,10 @@ static struct pernet_operations inet6_net_ops = {
>  
>  static int __init inet6_init(void)
>  {
> -	struct sk_buff *dummy_skb;
>  	struct list_head *r;
>  	int err = 0;
>  
> -	BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > sizeof(dummy_skb->cb));
> +	BUILD_BUG_ON(sizeof(struct inet6_skb_parm) > FIELD_SIZEOF(struct sk_buff, cb));
>  
>  	/* Register the socket-side information for inet6_create.  */
>  	for (r = &inetsw6[0]; r < &inetsw6[SOCK_MAX]; ++r)
> 

I'm resending this one with others.

--yoshfuji
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