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 ICMP module.
 8 *
 9 * Version:	@(#)icmp.h	1.0.4	05/13/93
10 *
11 * Authors:	Ross Biro
12 *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 
 
 
 
 
13 */
14#ifndef _ICMP_H
15#define	_ICMP_H
16
17#include <linux/icmp.h>
18
19#include <net/inet_sock.h>
20#include <net/snmp.h>
21#include <net/ip.h>
22
23struct icmp_err {
24  int		errno;
25  unsigned int	fatal:1;
26};
27
28extern const struct icmp_err icmp_err_convert[];
29#define ICMP_INC_STATS(net, field)	SNMP_INC_STATS((net)->mib.icmp_statistics, field)
30#define __ICMP_INC_STATS(net, field)	__SNMP_INC_STATS((net)->mib.icmp_statistics, field)
31#define ICMPMSGOUT_INC_STATS(net, field)	SNMP_INC_STATS_ATOMIC_LONG((net)->mib.icmpmsg_statistics, field+256)
32#define ICMPMSGIN_INC_STATS(net, field)		SNMP_INC_STATS_ATOMIC_LONG((net)->mib.icmpmsg_statistics, field)
33
34struct dst_entry;
35struct net_proto_family;
36struct sk_buff;
37struct net;
38
39void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info,
40		 const struct ip_options *opt);
41static inline void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
42{
43	__icmp_send(skb_in, type, code, info, &IPCB(skb_in)->opt);
44}
45
46#if IS_ENABLED(CONFIG_NF_NAT)
47void icmp_ndo_send(struct sk_buff *skb_in, int type, int code, __be32 info);
48#else
49static inline void icmp_ndo_send(struct sk_buff *skb_in, int type, int code, __be32 info)
50{
51	struct ip_options opts = { 0 };
52	__icmp_send(skb_in, type, code, info, &opts);
53}
54#endif
55
56int icmp_rcv(struct sk_buff *skb);
57int icmp_err(struct sk_buff *skb, u32 info);
58int icmp_init(void);
59void icmp_out_count(struct net *net, unsigned char type);
60bool icmp_build_probe(struct sk_buff *skb, struct icmphdr *icmphdr);
61
62#endif	/* _ICMP_H */

 
 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 ICMP module.
 7 *
 8 * Version:	@(#)icmp.h	1.0.4	05/13/93
 9 *
10 * Authors:	Ross Biro
11 *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 *
13 *		This program is free software; you can redistribute it and/or
14 *		modify it under the terms of the GNU General Public License
15 *		as published by the Free Software Foundation; either version
16 *		2 of the License, or (at your option) any later version.
17 */
18#ifndef _ICMP_H
19#define	_ICMP_H
20
21#include <linux/icmp.h>
22
23#include <net/inet_sock.h>
24#include <net/snmp.h>
 
25
26struct icmp_err {
27  int		errno;
28  unsigned	fatal:1;
29};
30
31extern const struct icmp_err icmp_err_convert[];
32#define ICMP_INC_STATS(net, field)	SNMP_INC_STATS((net)->mib.icmp_statistics, field)
33#define ICMP_INC_STATS_BH(net, field)	SNMP_INC_STATS_BH((net)->mib.icmp_statistics, field)
34#define ICMPMSGOUT_INC_STATS(net, field)	SNMP_INC_STATS((net)->mib.icmpmsg_statistics, field+256)
35#define ICMPMSGIN_INC_STATS_BH(net, field)	SNMP_INC_STATS_BH((net)->mib.icmpmsg_statistics, field)
36
37struct dst_entry;
38struct net_proto_family;
39struct sk_buff;
40struct net;
41
42extern void	icmp_send(struct sk_buff *skb_in,  int type, int code, __be32 info);
43extern int	icmp_rcv(struct sk_buff *skb);
44extern int	icmp_ioctl(struct sock *sk, int cmd, unsigned long arg);
45extern int	icmp_init(void);
46extern void	icmp_out_count(struct net *net, unsigned char type);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
47
48#endif	/* _ICMP_H */