1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * INET An implementation of the TCP/IP protocol suite for the LINUX
4 * operating system. INET is implemented using the BSD Socket
5 * interface as the means of communication with the user level.
6 *
7 * Definitions for the "ping" module.
8 */
9#ifndef _PING_H
10#define _PING_H
11
12#include <net/icmp.h>
13#include <net/netns/hash.h>
14
15/* PING_HTABLE_SIZE must be power of 2 */
16#define PING_HTABLE_SIZE 64
17#define PING_HTABLE_MASK (PING_HTABLE_SIZE-1)
18
19#define GID_T_MAX (((gid_t)~0U) - 1)
20
21/* Compatibility glue so we can support IPv6 when it's compiled as a module */
22struct pingv6_ops {
23 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len,
24 int *addr_len);
25 void (*ip6_datagram_recv_common_ctl)(struct sock *sk,
26 struct msghdr *msg,
27 struct sk_buff *skb);
28 void (*ip6_datagram_recv_specific_ctl)(struct sock *sk,
29 struct msghdr *msg,
30 struct sk_buff *skb);
31 int (*icmpv6_err_convert)(u8 type, u8 code, int *err);
32 void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err,
33 __be16 port, u32 info, u8 *payload);
34 int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr,
35 const struct net_device *dev, int strict);
36};
37
38struct ping_iter_state {
39 struct seq_net_private p;
40 int bucket;
41 sa_family_t family;
42};
43
44extern struct proto ping_prot;
45#if IS_ENABLED(CONFIG_IPV6)
46extern struct pingv6_ops pingv6_ops;
47#endif
48
49struct pingfakehdr {
50 struct icmphdr icmph;
51 struct msghdr *msg;
52 sa_family_t family;
53 __wsum wcheck;
54};
55
56int ping_get_port(struct sock *sk, unsigned short ident);
57void ping_unhash(struct sock *sk);
58
59int ping_init_sock(struct sock *sk);
60void ping_close(struct sock *sk, long timeout);
61int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
62void ping_err(struct sk_buff *skb, int offset, u32 info);
63int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
64 struct sk_buff *);
65
66int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
67 int flags, int *addr_len);
68int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
69 void *user_icmph, size_t icmph_len);
70int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
71enum skb_drop_reason ping_rcv(struct sk_buff *skb);
72
73#ifdef CONFIG_PROC_FS
74void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
75void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
76void ping_seq_stop(struct seq_file *seq, void *v);
77
78int __init ping_proc_init(void);
79void ping_proc_exit(void);
80#endif
81
82void __init ping_init(void);
83int __init pingv6_init(void);
84void pingv6_exit(void);
85
86#endif /* _PING_H */
87