Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 int (*ip6_datagram_recv_ctl)(struct sock *sk, struct msghdr *msg,
37 struct sk_buff *skb);
38 int (*icmpv6_err_convert)(u8 type, u8 code, int *err);
39 void (*ipv6_icmp_error)(struct sock *sk, struct sk_buff *skb, int err,
40 __be16 port, u32 info, u8 *payload);
41 int (*ipv6_chk_addr)(struct net *net, const struct in6_addr *addr,
42 const struct net_device *dev, int strict);
43};
44
45struct ping_table {
46 struct hlist_nulls_head hash[PING_HTABLE_SIZE];
47 rwlock_t lock;
48};
49
50struct ping_iter_state {
51 struct seq_net_private p;
52 int bucket;
53 sa_family_t family;
54};
55
56extern struct proto ping_prot;
57extern struct ping_table ping_table;
58#if IS_ENABLED(CONFIG_IPV6)
59extern struct pingv6_ops pingv6_ops;
60#endif
61
62struct pingfakehdr {
63 struct icmphdr icmph;
64 struct iovec *iov;
65 sa_family_t family;
66 __wsum wcheck;
67};
68
69int ping_get_port(struct sock *sk, unsigned short ident);
70void ping_hash(struct sock *sk);
71void ping_unhash(struct sock *sk);
72
73int ping_init_sock(struct sock *sk);
74void ping_close(struct sock *sk, long timeout);
75int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
76void ping_err(struct sk_buff *skb, int offset, u32 info);
77int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
78 struct sk_buff *);
79
80int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
81 size_t len, int noblock, int flags, int *addr_len);
82int ping_common_sendmsg(int family, struct msghdr *msg, size_t len,
83 void *user_icmph, size_t icmph_len);
84int ping_v4_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
85 size_t len);
86int ping_v6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
87 size_t len);
88int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
89void ping_rcv(struct sk_buff *skb);
90
91#ifdef CONFIG_PROC_FS
92struct ping_seq_afinfo {
93 char *name;
94 sa_family_t family;
95 const struct file_operations *seq_fops;
96 const struct seq_operations seq_ops;
97};
98
99extern const struct file_operations ping_seq_fops;
100
101void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
102void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
103void ping_seq_stop(struct seq_file *seq, void *v);
104int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo);
105void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo);
106
107int __init ping_proc_init(void);
108void ping_proc_exit(void);
109#endif
110
111void __init ping_init(void);
112int __init pingv6_init(void);
113void pingv6_exit(void);
114
115#endif /* _PING_H */