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
26 struct icmp_err {
27 int errno;
28 unsigned fatal:1;
29 };
30
31 extern struct icmp_err icmp_err_convert[];
32 DECLARE_SNMP_STAT(struct icmp_mib, icmp_statistics);
33 DECLARE_SNMP_STAT(struct icmpmsg_mib, icmpmsg_statistics);
34 #define ICMP_INC_STATS(field) SNMP_INC_STATS(icmp_statistics, field)
35 #define ICMP_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmp_statistics, field)
36 #define ICMP_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmp_statistics, field)
37 #define ICMPMSGOUT_INC_STATS(field) SNMP_INC_STATS(icmpmsg_statistics, field+256)
38 #define ICMPMSGOUT_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmpmsg_statistics, field+256)
39 #define ICMPMSGOUT_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmpmsg_statistics, field+256)
40 #define ICMPMSGIN_INC_STATS(field) SNMP_INC_STATS(icmpmsg_statistics, field)
41 #define ICMPMSGIN_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmpmsg_statistics, field)
42 #define ICMPMSGIN_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmpmsg_statistics, field)
43
44 struct dst_entry;
45 struct net_proto_family;
46 struct sk_buff;
47
48 extern void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info);
49 extern int icmp_rcv(struct sk_buff *skb);
50 extern int icmp_ioctl(struct sock *sk, int cmd, unsigned long arg);
51 extern void icmp_init(struct net_proto_family *ops);
52 extern void icmp_out_count(unsigned char type);
53
54 /* Move into dst.h ? */
55 extern int xrlim_allow(struct dst_entry *dst, int timeout);
56
57 struct raw_sock {
58 /* inet_sock has to be the first member */
59 struct inet_sock inet;
60 struct icmp_filter filter;
61 };
62
63 static inline struct raw_sock *raw_sk(const struct sock *sk)
64 {
65 return (struct raw_sock *)sk;
66 }
67
68 extern int sysctl_icmp_echo_ignore_all;
69 extern int sysctl_icmp_echo_ignore_broadcasts;
70 extern int sysctl_icmp_ignore_bogus_error_responses;
71 extern int sysctl_icmp_errors_use_inbound_ifaddr;
72 extern int sysctl_icmp_ratelimit;
73 extern int sysctl_icmp_ratemask;
74
75 #endif /* _ICMP_H */
76
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