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 #if IS_ENABLED(CONFIG_NF_NAT) 35 void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info); 36 #else 37 #define icmpv6_ndo_send icmpv6_send 38 #endif 39 40 extern int icmpv6_init(void); 41 extern int icmpv6_err_convert(u8 type, u8 code, 42 int *err); 43 extern void icmpv6_cleanup(void); 44 extern void icmpv6_param_prob(struct sk_buff *skb, 45 u8 code, int pos); 46 47 struct flowi6; 48 struct in6_addr; 49 extern void icmpv6_flow_init(struct sock *sk, 50 struct flowi6 *fl6, 51 u8 type, 52 const struct in6_addr *saddr, 53 const struct in6_addr *daddr, 54 int oif); 55 56 static inline bool icmpv6_is_err(int type) 57 { 58 switch (type) { 59 case ICMPV6_DEST_UNREACH: 60 case ICMPV6_PKT_TOOBIG: 61 case ICMPV6_TIME_EXCEED: 62 case ICMPV6_PARAMPROB: 63 return true; 64 } 65 66 return false; 67 } 68 69 #endif 70