[PATCH 4.14 033/189] netfilter: nf_tables: NAT chain and extensions require NF_TABLES

Greg Kroah-Hartman
2018-06-18T09:10:52Z

From: Pablo Neira Ayuso <pablo@netfilter.org>

[ Upstream commit 39f2ff0816e5421476c2bc538b68b4bb0708a78e ]

Move these options inside the scope of the 'if' NF_TABLES and
NF_TABLES_IPV6 dependencies. This patch fixes:

net/ipv6/netfilter/nft_chain_nat_ipv6.o: In function `nft_nat_do_chain':
>> net/ipv6/netfilter/nft_chain_nat_ipv6.c:37: undefined reference to `nft_do_chain'
net/ipv6/netfilter/nft_chain_nat_ipv6.o: In function `nft_chain_nat_ipv6_exit':
>> net/ipv6/netfilter/nft_chain_nat_ipv6.c:94: undefined reference to `nft_unregister_chain_type'
net/ipv6/netfilter/nft_chain_nat_ipv6.o: In function `nft_chain_nat_ipv6_init':
>> net/ipv6/netfilter/nft_chain_nat_ipv6.c:87: undefined reference to `nft_register_chain_type'

that happens with:

CONFIG_NF_TABLES=m
CONFIG_NFT_CHAIN_NAT_IPV6=y

Fixes: 02c7b25e5f54 ("netfilter: nf_tables: build-in filter chain type")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv6/netfilter/Kconfig | 55 ++++++++++++++++++++++-----------------------
1 file changed, 28 insertions(+), 27 deletions(-)

--- a/net/ipv6/netfilter/Kconfig
+++ b/net/ipv6/netfilter/Kconfig
@@ -48,6 +48,34 @@ config NFT_CHAIN_ROUTE_IPV6
fields such as the source, destination, flowlabel, hop-limit and
the packet mark.

+if NF_NAT_IPV6
+
+config NFT_CHAIN_NAT_IPV6
+ tristate "IPv6 nf_tables nat chain support"
+ help
+ This option enables the "nat" chain for IPv6 in nf_tables. This
+ chain type is used to perform Network Address Translation (NAT)
+ packet transformations such as the source, destination address and
+ source and destination ports.
+
+config NFT_MASQ_IPV6
+ tristate "IPv6 masquerade support for nf_tables"
+ depends on NFT_MASQ
+ select NF_NAT_MASQUERADE_IPV6
+ help
+ This is the expression that provides IPv4 masquerading support for
+ nf_tables.
+
+config NFT_REDIR_IPV6
+ tristate "IPv6 redirect support for nf_tables"
+ depends on NFT_REDIR
+ select NF_NAT_REDIRECT
+ help
+ This is the expression that provides IPv4 redirect support for
+ nf_tables.
+
+endif # NF_NAT_IPV6
+
config NFT_REJECT_IPV6
select NF_REJECT_IPV6
default NFT_REJECT
@@ -99,39 +127,12 @@ config NF_NAT_IPV6

if NF_NAT_IPV6

-config NFT_CHAIN_NAT_IPV6
- depends on NF_TABLES_IPV6
- tristate "IPv6 nf_tables nat chain support"
- help
- This option enables the "nat" chain for IPv6 in nf_tables. This
- chain type is used to perform Network Address Translation (NAT)
- packet transformations such as the source, destination address and
- source and destination ports.
-
config NF_NAT_MASQUERADE_IPV6
tristate "IPv6 masquerade support"
help
This is the kernel functionality to provide NAT in the masquerade
flavour (automatic source address selection) for IPv6.

-config NFT_MASQ_IPV6
- tristate "IPv6 masquerade support for nf_tables"
- depends on NF_TABLES_IPV6
- depends on NFT_MASQ
- select NF_NAT_MASQUERADE_IPV6
- help
- This is the expression that provides IPv4 masquerading support for
- nf_tables.
-
-config NFT_REDIR_IPV6
- tristate "IPv6 redirect support for nf_tables"
- depends on NF_TABLES_IPV6
- depends on NFT_REDIR
- select NF_NAT_REDIRECT
- help
- This is the expression that provides IPv4 redirect support for
- nf_tables.
-
endif # NF_NAT_IPV6

config IP6_NF_IPTABLES