1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_ICMPV6_H
3 #define _LINUX_ICMPV6_H
5 #include <linux/skbuff.h>
6 #include <uapi/linux/icmpv6.h>
8 static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
10 return (struct icmp6hdr *)skb_transport_header(skb);
13 #include <linux/netdevice.h>
15 #if IS_ENABLED(CONFIG_IPV6)
17 typedef void ip6_icmp_send_t(struct sk_buff *skb, u8 type, u8 code, __u32 info,
18 const struct in6_addr *force_saddr);
19 #if IS_BUILTIN(CONFIG_IPV6)
20 void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
21 const struct in6_addr *force_saddr);
22 static inline void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
24 icmp6_send(skb, type, code, info, NULL);
26 static inline int inet6_register_icmp_sender(ip6_icmp_send_t *fn)
28 BUILD_BUG_ON(fn != icmp6_send);
31 static inline int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn)
33 BUILD_BUG_ON(fn != icmp6_send);
37 extern void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info);
38 extern int inet6_register_icmp_sender(ip6_icmp_send_t *fn);
39 extern int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn);
42 int ip6_err_gen_icmpv6_unreach(struct sk_buff *skb, int nhs, int type,
43 unsigned int data_len);
45 #if IS_ENABLED(CONFIG_NF_NAT)
46 void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info);
48 #define icmpv6_ndo_send icmpv6_send
53 static inline void icmpv6_send(struct sk_buff *skb,
54 u8 type, u8 code, __u32 info)
58 static inline void icmpv6_ndo_send(struct sk_buff *skb,
59 u8 type, u8 code, __u32 info)
64 extern int icmpv6_init(void);
65 extern int icmpv6_err_convert(u8 type, u8 code,
67 extern void icmpv6_cleanup(void);
68 extern void icmpv6_param_prob(struct sk_buff *skb,
73 extern void icmpv6_flow_init(struct sock *sk,
76 const struct in6_addr *saddr,
77 const struct in6_addr *daddr,
80 static inline bool icmpv6_is_err(int type)
83 case ICMPV6_DEST_UNREACH:
84 case ICMPV6_PKT_TOOBIG:
85 case ICMPV6_TIME_EXCEED:
86 case ICMPV6_PARAMPROB: