netdev - Re: [PATCH net-next,v2] netfilter: nf_conntrack_bridge: fix CONFIG

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Date:   Fri, 31 May 2019 17:36:15 +0800
From:   wenxu <wenxu@...oud.cn>
To:     Pablo Neira Ayuso <pablo@...filter.org>,
        netfilter-devel@...r.kernel.org
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net-next,v2] netfilter: nf_conntrack_bridge: fix
 CONFIG_IPV6=y


Signed-off-by: wenxu <wenxu@...oud.cn>

On 5/31/2019 5:15 PM, Pablo Neira Ayuso wrote:
> This patch fixes a few problems with CONFIG_IPV6=y and
> CONFIG_NF_CONNTRACK_BRIDGE=m:
>
> In file included from net/netfilter/utils.c:5:
> include/linux/netfilter_ipv6.h: In function 'nf_ipv6_br_defrag':
> include/linux/netfilter_ipv6.h:110:9: error: implicit declaration of function 'nf_ct_frag6_gather'; did you mean 'nf_ct_attach'? [-Werror=implicit-function-declaration]
>
> And these too:
>
> net/ipv6/netfilter.c:242:2: error: unknown field 'br_defrag' specified in initializer
> net/ipv6/netfilter.c:243:2: error: unknown field 'br_fragment' specified in initializer
>
> This patch includes an original chunk from wenxu.
>
> Fixes: 764dd163ac92 ("netfilter: nf_conntrack_bridge: add support for IPv6")
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Reported-by: Yuehaibing <yuehaibing@...wei.com>
> Reported-by: kbuild test robot <lkp@...el.com>
> Reported-by: wenxu <wenxu@...oud.cn>
> Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
> ---
> v2: Forgot to include "net-next" and added Reported-by to all people that have
>     reported problems.
>
>  include/linux/netfilter_ipv6.h | 2 ++
>  net/ipv6/netfilter.c           | 2 +-
>  2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/netfilter_ipv6.h b/include/linux/netfilter_ipv6.h
> index a21b8c9623ee..3a3dc4b1f0e7 100644
> --- a/include/linux/netfilter_ipv6.h
> +++ b/include/linux/netfilter_ipv6.h
> @@ -96,6 +96,8 @@ static inline int nf_ip6_route(struct net *net, struct dst_entry **dst,
>  #endif
>  }
>  
> +#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
> +
>  static inline int nf_ipv6_br_defrag(struct net *net, struct sk_buff *skb,
>  				    u32 user)
>  {
> diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
> index c6665382acb5..9530cc280953 100644
> --- a/net/ipv6/netfilter.c
> +++ b/net/ipv6/netfilter.c
> @@ -238,7 +238,7 @@ static const struct nf_ipv6_ops ipv6ops = {
>  	.route_input		= ip6_route_input,
>  	.fragment		= ip6_fragment,
>  	.reroute		= nf_ip6_reroute,
> -#if IS_MODULE(CONFIG_NF_CONNTRACK_BRIDGE)
> +#if IS_MODULE(CONFIG_IPV6)
>  	.br_defrag		= nf_ct_frag6_gather,
>  	.br_fragment		= br_ip6_fragment,
>  #endif