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/netns/hash.h>
17
18/* PING_HTABLE_SIZE must be power of 2 */
19#define PING_HTABLE_SIZE 	64
20#define PING_HTABLE_MASK 	(PING_HTABLE_SIZE-1)
21
22#define ping_portaddr_for_each_entry(__sk, node, list) \
23	hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)
24
25/*
26 * gid_t is either uint or ushort.  We want to pass it to
27 * proc_dointvec_minmax(), so it must not be larger than MAX_INT
28 */
29#define GID_T_MAX (((gid_t)~0U) >> 1)
30
31struct ping_table {
32	struct hlist_nulls_head	hash[PING_HTABLE_SIZE];
33	rwlock_t		lock;
 
 
 
 
 
 
 
 
 
 
 
 
34};
35
36struct ping_iter_state {
37	struct seq_net_private  p;
38	int			bucket;
 
39};
40
41extern struct proto ping_prot;
 
 
 
42
 
 
 
 
 
 
43
44extern void ping_rcv(struct sk_buff *);
45extern void ping_err(struct sk_buff *, u32 info);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
46
47#ifdef CONFIG_PROC_FS
48extern int __init ping_proc_init(void);
49extern void ping_proc_exit(void);
 
 
 
 
50#endif
51
52void __init ping_init(void);
53
 
54
55#endif /* _PING_H */

 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 */