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Message-Id: <20140825.181341.304248903530349010.davem@davemloft.net>
Date:	Mon, 25 Aug 2014 18:13:41 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	therbert@...gle.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next 1/8] net: Clarification of CHECKSUM_UNNECESSARY

From: Tom Herbert <therbert@...gle.com>
Date: Mon, 25 Aug 2014 17:55:56 -0700 (PDT)

> @@ -569,16 +590,13 @@ struct sk_buff {
>  	__u8			wifi_acked:1;
>  	__u8			no_fcs:1;
>  	__u8			head_frag:1;
> -	/* Encapsulation protocol and NIC drivers should use
> -	 * this flag to indicate to each other if the skb contains
> -	 * encapsulated packet or not and maybe use the inner packet
> -	 * headers if needed
> -	 */
> +	/* Indicates the the inner headers are valid in the skbuff. */
>  	__u8			encapsulation:1;
>  	__u8			encap_hdr_csum:1;
>  	__u8			csum_valid:1;
>  	__u8			csum_complete_sw:1;
> -	/* 2/4 bit hole (depending on ndisc_nodetype presence) */
> +	__u8			csum_level:2;
> +	/* 0/2 bit hole (depending on ndisc_nodetype presence) */
>  	kmemcheck_bitfield_end(flags2);

Crap, with xmit_more, this actually bleeds us over into a new __u8.
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