1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_ICMPV6_H 3 #define _LINUX_ICMPV6_H 4 5 #include <linux/skbuff.h> 6 #include <uapi/linux/icmpv6.h> 7 8 static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb) 9 { 10 return (struct icmp6hdr *)skb_transport_header(skb); 11 } 12 13 #include <linux/netdevice.h> 14 15 #if IS_ENABLED(CONFIG_IPV6) 16 extern void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info); 17 18 typedef void ip6_icmp_send_t(struct sk_buff *skb, u8 type, u8 code, __u32 info, 19 const struct in6_addr *force_saddr); 20 extern int inet6_register_icmp_sender(ip6_icmp_send_t *fn); 21 extern int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn); 22 int ip6_err_gen_icmpv6_unreach(struct sk_buff *skb, int nhs, int type, 23 unsigned int data_len); 24 25 #else 26 27 static inline void icmpv6_send(struct sk_buff *skb, 28 u8 type, u8 code, __u32 info) 29 { 30 31 } 32 #endif 33 34 extern int icmpv6_init(void); 35 extern int icmpv6_err_convert(u8 type, u8 code, 36 int *err); 37 extern void icmpv6_cleanup(void); 38 extern void icmpv6_param_prob(struct sk_buff *skb, 39 u8 code, int pos); 40 41 struct flowi6; 42 struct in6_addr; 43 extern void icmpv6_flow_init(struct sock *sk, 44 struct flowi6 *fl6, 45 u8 type, 46 const struct in6_addr *saddr, 47 const struct in6_addr *daddr, 48 int oif); 49 #endif 50