Subject: Re: linux-next: Tree for Aug 2 (netfilter: tproxy)

From: Máté Eckl <[email-masked]>
Date: Thu, 2 Aug 2018 21:05:57 +0200

Hi Randy,

Thanks for reporting!

Please find the patch attached.

Regards,
Mate

On Thu, Aug 02, 2018 at 09:28:16AM -0700, Randy Dunlap wrote:
> On 08/02/2018 02:31 AM, Stephen Rothwell wrote:
> > Hi all,
> > 
> > Changes since 20180801:
> > 
> 
> on i386:
> 
> ../net/netfilter/nft_tproxy.c: In function 'nft_tproxy_init':
> ../net/netfilter/nft_tproxy.c:237:3: error: implicit declaration of function 'nf_defrag_ipv6_enable' [-Werror=implicit-function-declaration]
>    err = nf_defrag_ipv6_enable(ctx->net);
> 
> 
> Full randconfig file is attached.
> 
> Reported-by: Randy Dunlap <[email-masked]>
> 
> -- 
> ~Randy
>>From 2c3a7d3209ed5e539ecd69192fc0f4186fdc7d99 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A1t=C3=A9=20Eckl?= <[email-masked]>
Date: Thu, 2 Aug 2018 20:46:13 +0200
Subject: [PATCH] netfilter: nft_tproxy: Add missing config check
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A config check was missing form the code when using
nf_defrag_ipv6_enable with NFT_TPROXY != n and NF_DEFRAG_IPV6 = n and
this caused the following error in case of :

../net/netfilter/nft_tproxy.c: In function 'nft_tproxy_init':
../net/netfilter/nft_tproxy.c:237:3: error: implicit declaration of function
+'nf_defrag_ipv6_enable' [-Werror=implicit-function-declaration]
   err = nf_defrag_ipv6_enable(ctx->net);

This patch adds a check for NF_TABLES_IPV6 when NF_DEFRAG_IPV6 is
selected by Kconfig.

Reported-by: Randy Dunlap <[email-masked]>
Fixes: 4ed8eb6570a4 ("netfilter: nf_tables: Add native tproxy support")
Signed-off-by: Máté Eckl <[email-masked]>
---
 net/netfilter/nft_tproxy.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/netfilter/nft_tproxy.c b/net/netfilter/nft_tproxy.c
index c6845f7baa08..eff99dffc842 100644
--- a/net/netfilter/nft_tproxy.c
+++ b/net/netfilter/nft_tproxy.c
@@ -234,9 +234,11 @@ static int nft_tproxy_init(const struct nft_ctx *ctx,
 		err = nf_defrag_ipv4_enable(ctx->net);
 		if (err)
 			return err;
+#if IS_ENABLED(CONFIG_NF_TABLES_IPV6)
 		err = nf_defrag_ipv6_enable(ctx->net);
 		if (err)
 			return err;
+#endif
 		break;
 	default:
 		return -EOPNOTSUPP;
-- 
ecklm