1 files changed, 114 insertions, 0 deletions
diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h
new file mode 100644
index 000000000..db0f4fcfd
--- /dev/null
+++ b/include/linux/icmpv6.h
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_ICMPV6_H
+#define _LINUX_ICMPV6_H
+
+#include <linux/skbuff.h>
+#include <linux/ipv6.h>
+#include <uapi/linux/icmpv6.h>
+
+static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
+{
+	return (struct icmp6hdr *)skb_transport_header(skb);
+}
+
+#include <linux/netdevice.h>
+
+#if IS_ENABLED(CONFIG_IPV6)
+
+typedef void ip6_icmp_send_t(struct sk_buff *skb, u8 type, u8 code, __u32 info,
+			     const struct in6_addr *force_saddr,
+			     const struct inet6_skb_parm *parm);
+void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
+		const struct in6_addr *force_saddr,
+		const struct inet6_skb_parm *parm);
+#if IS_BUILTIN(CONFIG_IPV6)
+static inline void __icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
+				 const struct inet6_skb_parm *parm)
+{
+	icmp6_send(skb, type, code, info, NULL, parm);
+}
+static inline int inet6_register_icmp_sender(ip6_icmp_send_t *fn)
+{
+	BUILD_BUG_ON(fn != icmp6_send);
+	return 0;
+}
+static inline int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn)
+{
+	BUILD_BUG_ON(fn != icmp6_send);
+	return 0;
+}
+#else
+extern void __icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
+			  const struct inet6_skb_parm *parm);
+extern int inet6_register_icmp_sender(ip6_icmp_send_t *fn);
+extern int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn);
+#endif
+
+static inline void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
+{
+	__icmpv6_send(skb, type, code, info, IP6CB(skb));
+}
+
+int ip6_err_gen_icmpv6_unreach(struct sk_buff *skb, int nhs, int type,
+			       unsigned int data_len);
+
+#if IS_ENABLED(CONFIG_NF_NAT)
+void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info);
+#else
+static inline void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info)
+{
+	struct inet6_skb_parm parm = { 0 };
+	__icmpv6_send(skb_in, type, code, info, &parm);
+}
+#endif
+
+#else
+
+static inline void icmpv6_send(struct sk_buff *skb,
+			       u8 type, u8 code, __u32 info)
+{
+}
+
+static inline void icmpv6_ndo_send(struct sk_buff *skb,
+				   u8 type, u8 code, __u32 info)
+{
+}
+#endif
+
+extern int				icmpv6_init(void);
+extern int				icmpv6_err_convert(u8 type, u8 code,
+							   int *err);
+extern void				icmpv6_cleanup(void);
+extern void				icmpv6_param_prob_reason(struct sk_buff *skb,
+								 u8 code, int pos,
+								 enum skb_drop_reason reason);
+
+struct flowi6;
+struct in6_addr;
+extern void				icmpv6_flow_init(struct sock *sk,
+							 struct flowi6 *fl6,
+							 u8 type,
+							 const struct in6_addr *saddr,
+							 const struct in6_addr *daddr,
+							 int oif);
+
+static inline void icmpv6_param_prob(struct sk_buff *skb, u8 code, int pos)
+{
+	icmpv6_param_prob_reason(skb, code, pos,
+				 SKB_DROP_REASON_NOT_SPECIFIED);
+}
+
+static inline bool icmpv6_is_err(int type)
+{
+	switch (type) {
+	case ICMPV6_DEST_UNREACH:
+	case ICMPV6_PKT_TOOBIG:
+	case ICMPV6_TIME_EXCEED:
+	case ICMPV6_PARAMPROB:
+		return true;
+	}
+
+	return false;
+}
+
+#endif