netdev - Re: [Devel] [PATCH 1/5] Cut off br_port fied from net

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Message-ID: <20071022124915.GD6271@localhost.sw.ru>
Date:	Mon, 22 Oct 2007 16:49:15 +0400
From:	Alexey Dobriyan <adobriyan@...ru>
To:	Pavel Emelyanov <xemul@...nvz.org>
Cc:	David Miller <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>, devel@...nvz.org
Subject: Re: [Devel] [PATCH 1/5] Cut off br_port fied from net_device

On Mon, Oct 22, 2007 at 04:33:33PM +0400, Pavel Emelyanov wrote:
> And add the forward declaration for br_handle_frame_hook in
> include/linux/if_bridge.h

> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -699,8 +699,10 @@ struct net_device
>  	/* Network namespace this network device is inside */
>  	struct net		*nd_net;
>  
> +#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
>  	/* bridge stuff */
>  	struct net_bridge_port	*br_port;
> +#endif

Such ifdefs are troublesome, because one can compile kernel with
CONFIG_BRIDGE=n and later decide he needs BRIDGE=m and go boom.

IPv6 -- the biggest violator of this rule should not be taken as
example. :^)

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