enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/include/net/lwtunnel.h
..
..
@@ -16,9 +16,12 @@
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 #define LWTUNNEL_STATE_INPUT_REDIRECT	BIT(1)
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 #define LWTUNNEL_STATE_XMIT_REDIRECT	BIT(2)
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+/* LWTUNNEL_XMIT_CONTINUE should be distinguishable from dst_output return
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+ * values (NET_XMIT_xxx and NETDEV_TX_xxx in linux/netdevice.h) for safety.
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+ */
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 enum {
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 	LWTUNNEL_XMIT_DONE,
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-	LWTUNNEL_XMIT_CONTINUE,
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+	LWTUNNEL_XMIT_CONTINUE = 0x100,
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 };
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