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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 {
34 int (*ipv6_recv_error)(struct sock *sk, struct msghdr *msg, int len);
35 int (*ip6_datagram_recv_ctl)(struct sock *sk, struct msghdr *msg,
36 struct sk_buff *skb);
37 int (*icmpv6_err_convert)(u8 type, u8 code, int *err);
38 void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err,
39 __be16 port, u32 info, u8 *payload);
40 int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr,
David S. Miller6bc19fb2013-06-05 15:56:43 -070041 const struct net_device *dev, int strict);
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000042};
43
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000044struct ping_table {
45 struct hlist_nulls_head hash[PING_HTABLE_SIZE];
46 rwlock_t lock;
47};
48
49struct 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 +000056extern struct ping_table ping_table;
57#if IS_ENABLED(CONFIG_IPV6)
58extern struct pingv6_ops pingv6_ops;
59#endif
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000060
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000061struct pingfakehdr {
62 struct icmphdr icmph;
63 struct iovec *iov;
64 sa_family_t family;
65 __wsum wcheck;
66};
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000067
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +000068int ping_get_port(struct sock *sk, unsigned short ident);
69void ping_hash(struct sock *sk);
70void ping_unhash(struct sock *sk);
71
72int ping_init_sock(struct sock *sk);
73void ping_close(struct sock *sk, long timeout);
74int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
75void ping_err(struct sk_buff *skb, int offset, u32 info);
76int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
77 struct sk_buff *);
78
79int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
80 size_t len, int noblock, int flags, int *addr_len);
81int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
82 void *user_icmph, size_t icmph_len);
83int ping_v4_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
84 size_t len);
85int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
86 size_t len);
87int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
88void ping_rcv(struct sk_buff *skb);
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000089
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +000090#ifdef CONFIG_PROC_FS
Lorenzo Colitti8cc785f2013-05-31 15:05:49 +000091struct ping_seq_afinfo {
92 char *name;
93 sa_family_t family;
94 const struct file_operations *seq_fops;
95 const struct seq_operations seq_ops;
96};
97
Lorenzo Colittid862e542013-05-31 15:05:50 +000098extern const struct file_operations ping_seq_fops;
99
100void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
101void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
102void ping_seq_stop(struct seq_file *seq, void *v);
103int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo);
104void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo);
105
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +0000106extern int __init ping_proc_init(void);
107extern void ping_proc_exit(void);
108#endif
109
110void __init ping_init(void);
Lorenzo Colitti6d0bfe22013-05-22 20:17:31 +0000111int __init pingv6_init(void);
112void pingv6_exit(void);
Vasiliy Kulikovc319b4d2011-05-13 10:01:00 +0000113
114#endif /* _PING_H */