enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/include/net/ip6_tunnel.h
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@@ -57,7 +57,7 @@
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 	/* These fields used only by GRE */
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 	__u32 i_seqno;	/* The last seen seqno	*/
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-	__u32 o_seqno;	/* The last output seqno */
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+	atomic_t o_seqno;	/* The last output seqno */
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 	int hlen;       /* tun_hlen + encap_hlen */
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 	int tun_hlen;	/* Precalculated header length */
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 	int encap_hlen; /* Encap header length (FOU,GUE) */
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@@ -69,6 +69,8 @@
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 	size_t (*encap_hlen)(struct ip_tunnel_encap *e);
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 	int (*build_header)(struct sk_buff *skb, struct ip_tunnel_encap *e,
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 			    u8 *protocol, struct flowi6 *fl6);
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+	int (*err_handler)(struct sk_buff *skb, struct inet6_skb_parm *opt,
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+			   u8 type, u8 code, int offset, __be32 info);
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 };
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 #ifdef CONFIG_INET