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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/*
20 * gid_t is either uint or ushort. We want to pass it to
21 * proc_dointvec_minmax(), so it must not be larger than MAX_INT
22 */
23#define GID_T_MAX (((gid_t)~0U) >> 1)
24
25/* Compatibility glue so we can support IPv6 when it's compiled as a module */
26struct pingv6_ops {
27 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len,
28 int *addr_len);
29 void (*ip6_datagram_recv_common_ctl)(struct sock *sk,
30 struct msghdr *msg,
31 struct sk_buff *skb);
32 void (*ip6_datagram_recv_specific_ctl)(struct sock *sk,
33 struct msghdr *msg,
34 struct sk_buff *skb);
35 int (*icmpv6_err_convert)(u8 type, u8 code, int *err);
36 void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err,
37 __be16 port, u32 info, u8 *payload);
38 int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr,
39 const struct net_device *dev, int strict);
40};
41
42struct ping_iter_state {
43 struct seq_net_private p;
44 int bucket;
45 sa_family_t family;
46};
47
48extern struct proto ping_prot;
49#if IS_ENABLED(CONFIG_IPV6)
50extern struct pingv6_ops pingv6_ops;
51#endif
52
53struct pingfakehdr {
54 struct icmphdr icmph;
55 struct msghdr *msg;
56 sa_family_t family;
57 __wsum wcheck;
58};
59
60int ping_get_port(struct sock *sk, unsigned short ident);
61int ping_hash(struct sock *sk);
62void ping_unhash(struct sock *sk);
63
64int ping_init_sock(struct sock *sk);
65void ping_close(struct sock *sk, long timeout);
66int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
67void ping_err(struct sk_buff *skb, int offset, u32 info);
68int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
69 struct sk_buff *);
70
71int ping_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
72 int flags, int *addr_len);
73int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
74 void *user_icmph, size_t icmph_len);
75int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
76enum skb_drop_reason ping_rcv(struct sk_buff *skb);
77
78#ifdef CONFIG_PROC_FS
79void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
80void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
81void ping_seq_stop(struct seq_file *seq, void *v);
82
83int __init ping_proc_init(void);
84void ping_proc_exit(void);
85#endif
86
87void __init ping_init(void);
88int __init pingv6_init(void);
89void pingv6_exit(void);
90
91#endif /* _PING_H */
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Definitions for the "ping" module.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 */
13#ifndef _PING_H
14#define _PING_H
15
16#include <net/icmp.h>
17#include <net/netns/hash.h>
18
19/* PING_HTABLE_SIZE must be power of 2 */
20#define PING_HTABLE_SIZE 64
21#define PING_HTABLE_MASK (PING_HTABLE_SIZE-1)
22
23#define ping_portaddr_for_each_entry(__sk, node, list) \
24 hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)
25
26/*
27 * gid_t is either uint or ushort. We want to pass it to
28 * proc_dointvec_minmax(), so it must not be larger than MAX_INT
29 */
30#define GID_T_MAX (((gid_t)~0U) >> 1)
31
32/* Compatibility glue so we can support IPv6 when it's compiled as a module */
33struct pingv6_ops {
34 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len,
35 int *addr_len);
36 void (*ip6_datagram_recv_common_ctl)(struct sock *sk,
37 struct msghdr *msg,
38 struct sk_buff *skb);
39 void (*ip6_datagram_recv_specific_ctl)(struct sock *sk,
40 struct msghdr *msg,
41 struct sk_buff *skb);
42 int (*icmpv6_err_convert)(u8 type, u8 code, int *err);
43 void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err,
44 __be16 port, u32 info, u8 *payload);
45 int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr,
46 const struct net_device *dev, int strict);
47};
48
49struct ping_iter_state {
50 struct seq_net_private p;
51 int bucket;
52 sa_family_t family;
53};
54
55extern struct proto ping_prot;
56#if IS_ENABLED(CONFIG_IPV6)
57extern struct pingv6_ops pingv6_ops;
58#endif
59
60struct pingfakehdr {
61 struct icmphdr icmph;
62 struct iovec *iov;
63 sa_family_t family;
64 __wsum wcheck;
65};
66
67int ping_get_port(struct sock *sk, unsigned short ident);
68void ping_hash(struct sock *sk);
69void ping_unhash(struct sock *sk);
70
71int ping_init_sock(struct sock *sk);
72void ping_close(struct sock *sk, long timeout);
73int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
74void ping_err(struct sk_buff *skb, int offset, u32 info);
75int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
76 struct sk_buff *);
77
78int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
79 size_t len, int noblock, int flags, int *addr_len);
80int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
81 void *user_icmph, size_t icmph_len);
82int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
83 size_t len);
84int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
85void ping_rcv(struct sk_buff *skb);
86
87#ifdef CONFIG_PROC_FS
88struct ping_seq_afinfo {
89 char *name;
90 sa_family_t family;
91 const struct file_operations *seq_fops;
92 const struct seq_operations seq_ops;
93};
94
95extern const struct file_operations ping_seq_fops;
96
97void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
98void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
99void ping_seq_stop(struct seq_file *seq, void *v);
100int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo);
101void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo);
102
103int __init ping_proc_init(void);
104void ping_proc_exit(void);
105#endif
106
107void __init ping_init(void);
108int __init pingv6_init(void);
109void pingv6_exit(void);
110
111#endif /* _PING_H */