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Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +00001/*
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
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000016#include <net/icmp.h>
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000017#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
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000032/* Compatibility glue so we can support IPv6 when it's compiled as a module */
33struct pingv6_ops {
Hannes Frederic Sowa85fbaa72013-11-23 00:46:12 +010034 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len,
35 int *addr_len);
Hannes Frederic Sowa4b261c72014-01-20 03:43:08 +010036 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);
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000042 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,
David S. Miller6bc19fb2013-06-05 15:56:43 -070046 const struct net_device *dev, int strict);
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000047};
48
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000049struct ping_iter_state {
50 struct seq_net_private p;
51 int bucket;
Lorenzo Colitti8cc785f2013-05-31 15:05:49 +000052 sa_family_t family;
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000053};
54
55extern struct proto ping_prot;
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000056#if IS_ENABLED(CONFIG_IPV6)
57extern struct pingv6_ops pingv6_ops;
58#endif
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000059
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000060struct pingfakehdr {
61 struct icmphdr icmph;
Al Virocacdc7d2014-11-27 20:34:16 -050062 struct msghdr *msg;
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000063 sa_family_t family;
64 __wsum wcheck;
65};
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000066
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000067int 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);
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000082int 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);
Rick Jonese3e32172014-11-17 14:04:29 -080085bool ping_rcv(struct sk_buff *skb);
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000086
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000087#ifdef CONFIG_PROC_FS
Lorenzo Colitti8cc785f2013-05-31 15:05:49 +000088struct 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
Lorenzo Colittid862e542013-05-31 15:05:50 +000095extern 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
Joe Perches6d3b3342013-09-22 10:32:16 -0700103int __init ping_proc_init(void);
104void ping_proc_exit(void);
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +0000105#endif
106
107void __init ping_init(void);
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +0000108int __init pingv6_init(void);
109void pingv6_exit(void);
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +0000110
111#endif /* _PING_H */