[OpenWrt-Devel] [PATCH 28/29] kernel: netfilter: Adapt merge ipv4/ipv6 masquerade code

[Hauke Mehrtens]

In kernel commit 0168e8b361 ("netfilter: nat: merge ipv4/ipv6 masquerade
code into main nat module") the CONFIG_NF_NAT_MASQUERADE_IPV4 and
CONFIG_NF_NAT_MASQUERADE_IPV6 kernel configuration option were changed
to bool and the code will not be compiled as a own module any more, but
it will be integrated into nf_nat_ipv4.ko or nf_nat_ipv6.ko to save some
memory.

Activate these options as bool in the generic kernel 4.19 configuration
only, to always build them into the nf_nat_ipv*.ko modules. The kmod
file will still try to select them as module, but the generic
configuration will not be overwritten.

Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 include/netfilter.mk             | 4 ++--
 target/linux/generic/config-4.19 | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/netfilter.mk b/include/netfilter.mk
index 2d232b5f5c..4b9cc20622 100644
--- a/include/netfilter.mk
+++ b/include/netfilter.mk
@@ -187,10 +187,10 @@ $(eval $(call nf_add,IPT_IPV6_EXTRA,CONFIG_IP6_NF_MATCH_RT, $(P_V6)ip6t_rt))
 $(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT,CONFIG_NF_NAT, $(P_XT)nf_nat),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT,CONFIG_NF_NAT_REDIRECT, $(P_XT)nf_nat_redirect, ge 3.19.0),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT,CONFIG_NF_NAT_IPV4, $(P_V4)nf_nat_ipv4),))
-$(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT,CONFIG_NF_NAT_MASQUERADE_IPV4, $(P_V4)nf_nat_masquerade_ipv4),))
+$(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT,CONFIG_NF_NAT_MASQUERADE_IPV4, $(P_V4)nf_nat_masquerade_ipv4, lt 4.18),))
 
 $(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT6,CONFIG_NF_NAT_IPV6, $(P_V6)nf_nat_ipv6),))
-$(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT6,CONFIG_NF_NAT_MASQUERADE_IPV6, $(P_V6)nf_nat_masquerade_ipv6),))
+$(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT6,CONFIG_NF_NAT_MASQUERADE_IPV6, $(P_V6)nf_nat_masquerade_ipv6, lt 4.18),))
 
 $(eval $(if $(NF_KMOD),$(call nf_add,IPT_NAT,CONFIG_NETFILTER_XT_NAT, $(P_XT)xt_nat),))
 $(eval $(if $(NF_KMOD),$(call nf_add,IPT_NAT,CONFIG_IP_NF_NAT, $(P_V4)iptable_nat),))
diff --git a/target/linux/generic/config-4.19 b/target/linux/generic/config-4.19
index 7171c2e478..f57824de86 100644
--- a/target/linux/generic/config-4.19
+++ b/target/linux/generic/config-4.19
@@ -3357,8 +3357,8 @@ CONFIG_NF_CONNTRACK_PROCFS=y
 # CONFIG_NF_NAT_H323 is not set
 # CONFIG_NF_NAT_IPV6 is not set
 # CONFIG_NF_NAT_IRC is not set
-# CONFIG_NF_NAT_MASQUERADE_IPV4 is not set
-# CONFIG_NF_NAT_MASQUERADE_IPV6 is not set
+CONFIG_NF_NAT_MASQUERADE_IPV4=y
+CONFIG_NF_NAT_MASQUERADE_IPV6=y
 # CONFIG_NF_NAT_NEEDED is not set
 # CONFIG_NF_NAT_PPTP is not set
 # CONFIG_NF_NAT_PROTO_GRE is not set
-- 
2.11.0


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