1 files changed, 77 insertions, 10 deletions

diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h
index 630f45335c73..e3b3b0fa2a8f 100644
--- a/include/linux/icmpv6.h
+++ b/include/linux/icmpv6.h
@@ -1,7 +1,9 @@
+/* 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)
@@ -12,18 +14,64 @@ static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
 #include <linux/netdevice.h>
 
 #if IS_ENABLED(CONFIG_IPV6)
-extern void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info);
 
-typedef void ip6_icmp_send_t(struct sk_buff *skb, u8 type, u8 code, __u32 info);
+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
 
@@ -31,15 +79,34 @@ 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(struct sk_buff *skb,
-							  u8 code, int pos);
+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);
+
+void icmpv6_flow_init(const 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