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From b89f391203c4420eb454cb321e799a64de809f52 Mon Sep 17 00:00:00 2001
From: Yousong Zhou <zhouyousong@yunionyun.com>
Date: Fri, 3 May 2019 15:03:24 +0000
Subject: [PATCH 5/5] datapath: conntrack: fix include for
 IP6_DEFRAG_CONNTRACK_IN

The enum definition is now inside include/net/ipv6_frag.h since upstream commit
70b095c ("ipv6: remove dependency of nf_defrag_ipv6 on ipv6 module") which was
backported to stable trees (4.9, 4.14, 4.19) only these days.

The error message

	  CC [M]  /opt/buildbot/slaves/lede-slave-tah/mipsel_24kc/build/sdk/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7620/openvswitch-2.11.0/datapath/linux/conntrack.o
	/opt/buildbot/slaves/lede-slave-tah/mipsel_24kc/build/sdk/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7620/openvswitch-2.11.0/datapath/linux/conntrack.c: In function 'handle_fragments':
	/opt/buildbot/slaves/lede-slave-tah/mipsel_24kc/build/sdk/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7620/openvswitch-2.11.0/datapath/linux/conntrack.c:554:8: error: variable 'user' has initializer but incomplete type
	   enum ip6_defrag_users user = IP6_DEFRAG_CONNTRACK_IN + zone;
		^~~~~~~~~~~~~~~~
	/opt/buildbot/slaves/lede-slave-tah/mipsel_24kc/build/sdk/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7620/openvswitch-2.11.0/datapath/linux/conntrack.c:554:32: error: 'IP6_DEFRAG_CONNTRACK_IN' undeclared (first use in this function); did you mean 'IP_DEFRAG_CONNTRACK_IN'?
	   enum ip6_defrag_users user = IP6_DEFRAG_CONNTRACK_IN + zone;
					^~~~~~~~~~~~~~~~~~~~~~~
					IP_DEFRAG_CONNTRACK_IN
	/opt/buildbot/slaves/lede-slave-tah/mipsel_24kc/build/sdk/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7620/openvswitch-2.11.0/datapath/linux/conntrack.c:554:32: note: each undeclared identifier is reported only once for each function it appears in
	/opt/buildbot/slaves/lede-slave-tah/mipsel_24kc/build/sdk/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7620/openvswitch-2.11.0/datapath/linux/conntrack.c:554:25: error: storage size of 'user' isn't known
	   enum ip6_defrag_users user = IP6_DEFRAG_CONNTRACK_IN + zone;
				 ^~~~
	/opt/buildbot/slaves/lede-slave-tah/mipsel_24kc/build/sdk/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7620/openvswitch-2.11.0/datapath/linux/conntrack.c:554:25: warning: unused variable 'user' [-Wunused-variable]
	scripts/Makefile.build:326: recipe for target '/opt/buildbot/slaves/lede-slave-tah/mipsel_24kc/build/sdk/build_dir/target-mipsel_24kc_musl/linux-ramips_mt7620/openvswitch-2.11.0/datapath/linux/conntrack.o' failed

Reference: https://github.com/openwrt/packages/issues/8548#issuecomment-488871090
Signed-off-by: Yousong Zhou <zhouyousong@yunionyun.com>
---
 datapath/conntrack.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/datapath/conntrack.c b/datapath/conntrack.c
index a7dc9e0c3..69bda5a9c 100644
--- a/datapath/conntrack.c
+++ b/datapath/conntrack.c
@@ -31,6 +31,7 @@
 #include <net/netfilter/nf_conntrack_seqadj.h>
 #include <net/netfilter/nf_conntrack_zones.h>
 #include <net/netfilter/ipv6/nf_defrag_ipv6.h>
+#include <net/ipv6_frag.h>
 
 #ifdef CONFIG_NF_NAT_NEEDED
 #include <linux/netfilter/nf_nat.h>