netdev - Re: [PATCH net-next 5/5] net: skbuff: hide nf_trace and ipvs

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Date:   Mon, 17 Apr 2023 14:09:36 +0200
From:   Simon Horman <horms@...nel.org>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     davem@...emloft.net, netdev@...r.kernel.org, edumazet@...gle.com,
        pabeni@...hat.com, pablo@...filter.org, fw@...len.de
Subject: Re: [PATCH net-next 5/5] net: skbuff: hide nf_trace and ipvs_property

On Fri, Apr 14, 2023 at 09:01:05AM -0700, Jakub Kicinski wrote:
> Accesses to nf_trace and ipvs_property are already wrapped
> by ifdefs where necessary. Don't allocate the bits for those
> fields at all if possible.
> 
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

FWIIW, I'm fine with this, modulo the module handling
discussed elsewhere in this thread.

Acked-by: Simon Horman <horms@...nel.org>

> ---
> CC: pablo@...filter.org
> CC: fw@...len.de
> ---
>  include/linux/skbuff.h | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 543f7ae9f09f..7b43d5a03613 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -966,8 +966,12 @@ struct sk_buff {
>  	__u8			ndisc_nodetype:2;
>  #endif
>  
> +#if IS_ENABLED(CONFIG_IP_VS)
>  	__u8			ipvs_property:1;
> +#endif
> +#if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE) || defined(CONFIG_NF_TABLES)
>  	__u8			nf_trace:1;
> +#endif
>  #ifdef CONFIG_NET_SWITCHDEV
>  	__u8			offload_fwd_mark:1;
>  	__u8			offload_l3_fwd_mark:1;
> -- 
> 2.39.2
>