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33 * @(#)icmp_var.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/netinet/icmp_var.h,v 1.15.2.2 2001/12/07 09:23:11 ru Exp $
35 * $DragonFly: src/sys/netinet/icmp_var.h,v 1.5 2004/12/21 02:54:15 hsu Exp $
38 #ifndef _NETINET_ICMP_VAR_H_
39 #define _NETINET_ICMP_VAR_H_
42 #include "opt_icmp_bandlim.h" /* for ICMP_BANDLIM */
46 * Variables related to this implementation
47 * of the internet control message protocol.
50 /* statistics related to icmp packets generated */
51 u_long icps_error; /* # of calls to icmp_error */
52 u_long icps_oldshort; /* no error 'cuz old ip too short */
53 u_long icps_oldicmp; /* no error 'cuz old was icmp */
54 u_long icps_outhist[ICMP_MAXTYPE + 1];
55 /* statistics related to input messages processed */
56 u_long icps_badcode; /* icmp_code out of range */
57 u_long icps_tooshort; /* packet < ICMP_MINLEN */
58 u_long icps_checksum; /* bad checksum */
59 u_long icps_badlen; /* calculated bound mismatch */
60 u_long icps_reflect; /* number of responses */
61 u_long icps_inhist[ICMP_MAXTYPE + 1];
62 u_long icps_bmcastecho; /* b/mcast echo requests dropped */
63 u_long icps_bmcasttstamp; /* b/mcast tstamp requests dropped */
64 u_long icps_badaddr; /* bad return address */
65 u_long icps_noroute; /* no route back */
69 * Names for ICMP sysctl objects
71 #define ICMPCTL_MASKREPL 1 /* allow replies to netmask requests */
72 #define ICMPCTL_STATS 2 /* statistics (read-only) */
73 #define ICMPCTL_ICMPLIM 3
74 #define ICMPCTL_MAXID 4
76 #define ICMPCTL_NAMES { \
78 { "maskrepl", CTLTYPE_INT }, \
79 { "stats", CTLTYPE_STRUCT }, \
80 { "icmplim", CTLTYPE_INT }, \
84 SYSCTL_DECL(_net_inet_icmp);
85 extern struct icmpstat icmpstat; /* icmp statistics */
87 extern int badport_bandlim (int);
89 #define BANDLIM_UNLIMITED -1
90 #define BANDLIM_ICMP_UNREACH 0
91 #define BANDLIM_ICMP_ECHO 1
92 #define BANDLIM_ICMP_TSTAMP 2
93 #define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */
94 #define BANDLIM_RST_OPENPORT 4 /* No connection, listener */