summaryrefslogtreecommitdiffstats
path: root/include/net/ping.h
blob: 23062c369c6268a7af91fb10e7b99bee2beb7f60 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
/*
 * INET		An implementation of the TCP/IP protocol suite for the LINUX
 *		operating system.  INET is implemented using the  BSD Socket
 *		interface as the means of communication with the user level.
 *
 *		Definitions for the "ping" module.
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 */
#ifndef _PING_H
#define _PING_H

#include <net/netns/hash.h>

/* PING_HTABLE_SIZE must be power of 2 */
#define PING_HTABLE_SIZE 	64
#define PING_HTABLE_MASK 	(PING_HTABLE_SIZE-1)

#define ping_portaddr_for_each_entry(__sk, node, list) \
	hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)

/*
 * gid_t is either uint or ushort.  We want to pass it to
 * proc_dointvec_minmax(), so it must not be larger than MAX_INT
 */
#define GID_T_MAX (((gid_t)~0U) >> 1)

struct ping_table {
	struct hlist_nulls_head	hash[PING_HTABLE_SIZE];
	rwlock_t		lock;
};

struct ping_iter_state {
	struct seq_net_private  p;
	int			bucket;
};

extern struct proto ping_prot;


extern void ping_rcv(struct sk_buff *);
extern void ping_err(struct sk_buff *, u32 info);

extern void inet_get_ping_group_range_net(struct net *net, unsigned int *low, unsigned int *high);

#ifdef CONFIG_PROC_FS
extern int __init ping_proc_init(void);
extern void ping_proc_exit(void);
#endif

void __init ping_init(void);


#endif /* _PING_H */