| /* 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 |