netfilter: Add dependency on IPV6 for NF_TABLES_INET

Commit 1d49144c0aa ("netfilter: nf_tables: add "inet" table for
IPv4/IPv6") allows creation of non-IPV6 enabled .config files that
will fail to configure/link as follows:

warning: (NF_TABLES_INET) selects NF_TABLES_IPV6 which has unmet direct dependencies (NET && INET && IPV6 && NETFILTER && NF_TABLES)
warning: (NF_TABLES_INET) selects NF_TABLES_IPV6 which has unmet direct dependencies (NET && INET && IPV6 && NETFILTER && NF_TABLES)
warning: (NF_TABLES_INET) selects NF_TABLES_IPV6 which has unmet direct dependencies (NET && INET && IPV6 && NETFILTER && NF_TABLES)
net/built-in.o: In function `nft_reject_eval':
nft_reject.c:(.text+0x651e8): undefined reference to `nf_ip6_checksum'
nft_reject.c:(.text+0x65270): undefined reference to `ip6_route_output'
nft_reject.c:(.text+0x656c4): undefined reference to `ip6_dst_hoplimit'
make: *** [vmlinux] Error 1

Since the feature is to allow for a mixed IPV4 and IPV6 table, it
seems sensible to make it depend on IPV6.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index 37d2092705a7eb215f28b3ba569aedfe10be2ed6..6941a4f3b3eeeaf68c68a40ee45fc30f45826631 100644 (file)
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -429,7 +429,7 @@ config NF_TABLES
          To compile it as a module, choose M here.
 
 config NF_TABLES_INET
-       depends on NF_TABLES
+       depends on NF_TABLES && IPV6
        select NF_TABLES_IPV4
        select NF_TABLES_IPV6
        tristate "Netfilter nf_tables mixed IPv4/IPv6 tables support"