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netfilter: flowtable infrastructure depends on NETFILTER_INGRESS

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config NF_FLOW_TABLE depends on NETFILTER_INGRESS. If users forget to
enable this toggle, flowtable registration fails with EOPNOTSUPP.

Moreover, turn 'select NF_FLOW_TABLE' in every flowtable family flavour
into dependency instead, otherwise this new dependency on
NETFILTER_INGRESS causes a warning. This also allows us to remove the
explicit dependency between family flowtables <-> NF_TABLES and
NF_CONNTRACK, given they depend on the NF_FLOW_TABLE core that already
expresses the general dependencies for this new infrastructure.

Moreover, NF_FLOW_TABLE_INET depends on NF_FLOW_TABLE_IPV4 and
NF_FLOWTABLE_IPV6, which already depends on NF_FLOW_TABLE. So we can get
rid of direct dependency with NF_FLOW_TABLE.

In general, let's avoid 'select', it just makes things more complicated.

Reported-by: John Crispin <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
This commit is contained in:
Pablo Neira Ayuso 2018-01-31 18:13:39 +01:00
commit 6be3bcd75a
3 changed files with 7 additions and 7 deletions
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3
net/ipv4/netfilter/Kconfig
View file

@ -80,8 +80,7 @@ endif # NF_TABLES
config NF_FLOW_TABLE_IPV4
tristate "Netfilter flow table IPv4 module"
depends on NF_CONNTRACK && NF_TABLES
select NF_FLOW_TABLE
depends on NF_FLOW_TABLE
help
This option adds the flow table IPv4 support.