several netfilter compilation units rely on implicit includes
coming from nf_conntrack_proto_gre.h.

Clean this up and add the required dependencies where needed.

nf_conntrack.h requires net_generic() helper.
Place various gre/ppp/vlan includes to where they are needed.

Signed-off-by: Florian Westphal <fw@strlen.de>
---
 include/linux/netfilter/nf_conntrack_proto_gre.h | 3 ---
 include/net/netfilter/nf_conntrack.h             | 1 +
 net/netfilter/nf_conntrack_netlink.c             | 1 +
 net/netfilter/nf_conntrack_proto_gre.c           | 2 ++
 net/netfilter/nf_flow_table_ip.c                 | 2 ++
 net/netfilter/nf_flow_table_offload.c            | 1 +
 net/netfilter/nf_flow_table_path.c               | 1 +
 net/netfilter/nf_nat_ovs.c                       | 3 +++
 net/netfilter/nf_nat_proto.c                     | 1 +
 net/netfilter/nft_flow_offload.c                 | 1 +
 net/sched/act_ct.c                               | 2 ++
 net/sched/act_ctinfo.c                           | 1 +
 12 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/include/linux/netfilter/nf_conntrack_proto_gre.h b/include/linux/netfilter/nf_conntrack_proto_gre.h
index 34ce5d2f37a2..9ee7014400e8 100644
--- a/include/linux/netfilter/nf_conntrack_proto_gre.h
+++ b/include/linux/netfilter/nf_conntrack_proto_gre.h
@@ -1,9 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _CONNTRACK_PROTO_GRE_H
 #define _CONNTRACK_PROTO_GRE_H
-#include <asm/byteorder.h>
-#include <net/gre.h>
-#include <net/pptp.h>
 
 struct nf_ct_gre {
 	unsigned int stream_timeout;
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index aa0a7c82199e..bc42dd0e10e6 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -16,6 +16,7 @@
 #include <linux/bitops.h>
 #include <linux/compiler.h>
 
+#include <net/netns/generic.h>
 #include <linux/netfilter/nf_conntrack_common.h>
 #include <linux/netfilter/nf_conntrack_tcp.h>
 #include <linux/netfilter/nf_conntrack_sctp.h>
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 3a04665adf99..662f6bbfa805 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -32,6 +32,7 @@
 #include <linux/siphash.h>
 
 #include <linux/netfilter.h>
+#include <net/ipv6.h>
 #include <net/netlink.h>
 #include <net/sock.h>
 #include <net/netfilter/nf_conntrack.h>
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index af369e686fc5..b894bb7a97ad 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -33,12 +33,14 @@
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <net/dst.h>
+#include <net/gre.h>
 #include <net/net_namespace.h>
 #include <net/netns/generic.h>
 #include <net/netfilter/nf_conntrack_l4proto.h>
 #include <net/netfilter/nf_conntrack_helper.h>
 #include <net/netfilter/nf_conntrack_core.h>
 #include <net/netfilter/nf_conntrack_timeout.h>
+#include <net/pptp.h>
 #include <linux/netfilter/nf_conntrack_proto_gre.h>
 #include <linux/netfilter/nf_conntrack_pptp.h>
 
diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c
index 78883343e5d6..11da560f38bf 100644
--- a/net/netfilter/nf_flow_table_ip.c
+++ b/net/netfilter/nf_flow_table_ip.c
@@ -8,6 +8,8 @@
 #include <linux/ipv6.h>
 #include <linux/netdevice.h>
 #include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <net/gre.h>
 #include <net/gso.h>
 #include <net/ip.h>
 #include <net/ipv6.h>
diff --git a/net/netfilter/nf_flow_table_offload.c b/net/netfilter/nf_flow_table_offload.c
index d8f7bfd60ac6..b1966b68c48a 100644
--- a/net/netfilter/nf_flow_table_offload.c
+++ b/net/netfilter/nf_flow_table_offload.c
@@ -6,6 +6,7 @@
 #include <linux/netdevice.h>
 #include <linux/tc_act/tc_csum.h>
 #include <net/flow_offload.h>
+#include <net/ip_tunnels.h>
 #include <net/netfilter/nf_flow_table.h>
 #include <net/netfilter/nf_tables.h>
 #include <net/netfilter/nf_conntrack.h>
diff --git a/net/netfilter/nf_flow_table_path.c b/net/netfilter/nf_flow_table_path.c
index eb24fe2715dc..6bb9579dcc2a 100644
--- a/net/netfilter/nf_flow_table_path.c
+++ b/net/netfilter/nf_flow_table_path.c
@@ -2,6 +2,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/etherdevice.h>
 #include <linux/netlink.h>
 #include <linux/netfilter.h>
 #include <linux/spinlock.h>
diff --git a/net/netfilter/nf_nat_ovs.c b/net/netfilter/nf_nat_ovs.c
index 0f9a559f6207..31474e8c034a 100644
--- a/net/netfilter/nf_nat_ovs.c
+++ b/net/netfilter/nf_nat_ovs.c
@@ -2,6 +2,9 @@
 /* Support nat functions for openvswitch and used by OVS and TC conntrack. */
 
 #include <net/netfilter/nf_nat.h>
+#include <net/ipv6.h>
+#include <linux/ip.h>
+#include <linux/if_vlan.h>
 
 /* Modelled after nf_nat_ipv[46]_fn().
  * range is only used for new, uninitialized NAT state.
diff --git a/net/netfilter/nf_nat_proto.c b/net/netfilter/nf_nat_proto.c
index b14a434b9561..97c0f841fc96 100644
--- a/net/netfilter/nf_nat_proto.c
+++ b/net/netfilter/nf_nat_proto.c
@@ -25,6 +25,7 @@
 #include <net/ip6_route.h>
 #include <net/xfrm.h>
 #include <net/ipv6.h>
+#include <net/pptp.h>
 
 #include <net/netfilter/nf_conntrack_core.h>
 #include <net/netfilter/nf_conntrack.h>
diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c
index b8f76c9057fd..179d0e59e2b5 100644
--- a/net/netfilter/nft_flow_offload.c
+++ b/net/netfilter/nft_flow_offload.c
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
+#include <linux/etherdevice.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
index 2b6ac7069dc1..81d488655793 100644
--- a/net/sched/act_ct.c
+++ b/net/sched/act_ct.c
@@ -13,9 +13,11 @@
 #include <linux/skbuff.h>
 #include <linux/rtnetlink.h>
 #include <linux/pkt_cls.h>
+#include <linux/if_tunnel.h>
 #include <linux/ip.h>
 #include <linux/ipv6.h>
 #include <linux/rhashtable.h>
+#include <net/gre.h>
 #include <net/netlink.h>
 #include <net/pkt_sched.h>
 #include <net/pkt_cls.h>
diff --git a/net/sched/act_ctinfo.c b/net/sched/act_ctinfo.c
index 71efe04d00b5..d2c750bab1d3 100644
--- a/net/sched/act_ctinfo.c
+++ b/net/sched/act_ctinfo.c
@@ -16,6 +16,7 @@
 #include <net/pkt_sched.h>
 #include <net/act_api.h>
 #include <net/pkt_cls.h>
+#include <net/inet_ecn.h>
 #include <uapi/linux/tc_act/tc_ctinfo.h>
 #include <net/tc_act/tc_ctinfo.h>
 #include <net/tc_wrapper.h>
-- 
2.52.0