Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
8static 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)
16extern void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info);
17
18typedef void ip6_icmp_send_t(struct sk_buff *skb, u8 type, u8 code, __u32 info,
19 const struct in6_addr *force_saddr);
20extern int inet6_register_icmp_sender(ip6_icmp_send_t *fn);
21extern int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn);
22int ip6_err_gen_icmpv6_unreach(struct sk_buff *skb, int nhs, int type,
23 unsigned int data_len);
24
25#if IS_ENABLED(CONFIG_NF_NAT)
26void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info);
27#else
28#define icmpv6_ndo_send icmpv6_send
29#endif
30
31#else
32
33static inline void icmpv6_send(struct sk_buff *skb,
34 u8 type, u8 code, __u32 info)
35{
36}
37
38static inline void icmpv6_ndo_send(struct sk_buff *skb,
39 u8 type, u8 code, __u32 info)
40{
41}
42#endif
43
44extern int icmpv6_init(void);
45extern int icmpv6_err_convert(u8 type, u8 code,
46 int *err);
47extern void icmpv6_cleanup(void);
48extern void icmpv6_param_prob(struct sk_buff *skb,
49 u8 code, int pos);
50
51struct flowi6;
52struct in6_addr;
53extern void icmpv6_flow_init(struct sock *sk,
54 struct flowi6 *fl6,
55 u8 type,
56 const struct in6_addr *saddr,
57 const struct in6_addr *daddr,
58 int oif);
59
60static inline bool icmpv6_is_err(int type)
61{
62 switch (type) {
63 case ICMPV6_DEST_UNREACH:
64 case ICMPV6_PKT_TOOBIG:
65 case ICMPV6_TIME_EXCEED:
66 case ICMPV6_PARAMPROB:
67 return true;
68 }
69
70 return false;
71}
72
73#endif