From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH next-next v4 1/2] net: Use 16bits for inner_*_headers
 fields of struct skbuff
Date: Thu, 23 May 2013 18:38:17 -0700 (PDT)
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From: Simon Horman <horms@verge.net.au>
Date: Wed, 22 May 2013 15:57:15 +0900

> @@ -509,9 +509,9 @@ struct sk_buff {
>  		__u32		reserved_tailroom;
>  	};
>  
> -	sk_buff_data_t		inner_transport_header;
> -	sk_buff_data_t		inner_network_header;
> -	sk_buff_data_t		inner_mac_header;
> +	__u16			inner_transport_header;
> +	__u16			inner_network_header;
> +	__u16			inner_mac_header;
>  	sk_buff_data_t		transport_header;
>  	sk_buff_data_t		network_header;
>  	sk_buff_data_t		mac_header;

As Pekka suggested, let's try to convert them allto __u16.

Thanks.