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29 * @(#)icmp_var.h 8.1 (Berkeley) 6/10/93
33 #ifndef _NETINET_ICMP_VAR_H_
34 #define _NETINET_ICMP_VAR_H_
38 * Variables related to this implementation
39 * of the internet control message protocol.
42 /* statistics related to icmp packets generated */
43 u_long icps_error; /* # of calls to icmp_error */
44 u_long icps_oldshort; /* no error 'cuz old ip too short */
45 u_long icps_oldicmp; /* no error 'cuz old was icmp */
46 u_long icps_outhist[ICMP_MAXTYPE + 1];
47 /* statistics related to input messages processed */
48 u_long icps_badcode; /* icmp_code out of range */
49 u_long icps_tooshort; /* packet < ICMP_MINLEN */
50 u_long icps_checksum; /* bad checksum */
51 u_long icps_badlen; /* calculated bound mismatch */
52 u_long icps_reflect; /* number of responses */
53 u_long icps_inhist[ICMP_MAXTYPE + 1];
54 u_long icps_bmcastecho; /* b/mcast echo requests dropped */
55 u_long icps_bmcasttstamp; /* b/mcast tstamp requests dropped */
56 u_long icps_badaddr; /* bad return address */
57 u_long icps_noroute; /* no route back */
62 * In-kernel consumers can use these accessor macros directly to update
65 #define ICMPSTAT_ADD(name, val) V_icmpstat.name += (val)
66 #define ICMPSTAT_INC(name) ICMPSTAT_ADD(name, 1)
69 * Kernel module consumers must use this accessor macro.
71 void kmod_icmpstat_inc(int statnum);
72 #define KMOD_ICMPSTAT_INC(name) \
73 kmod_icmpstat_inc(offsetof(struct icmpstat, name) / sizeof(u_long))
77 * Names for ICMP sysctl objects
79 #define ICMPCTL_MASKREPL 1 /* allow replies to netmask requests */
80 #define ICMPCTL_STATS 2 /* statistics (read-only) */
81 #define ICMPCTL_ICMPLIM 3
82 #define ICMPCTL_MAXID 4
84 #define ICMPCTL_NAMES { \
86 { "maskrepl", CTLTYPE_INT }, \
87 { "stats", CTLTYPE_STRUCT }, \
88 { "icmplim", CTLTYPE_INT }, \
92 SYSCTL_DECL(_net_inet_icmp);
94 VNET_DECLARE(struct icmpstat, icmpstat); /* icmp statistics. */
95 #define V_icmpstat VNET(icmpstat)
97 extern int badport_bandlim(int);
98 #define BANDLIM_UNLIMITED -1
99 #define BANDLIM_ICMP_UNREACH 0
100 #define BANDLIM_ICMP_ECHO 1
101 #define BANDLIM_ICMP_TSTAMP 2
102 #define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */
103 #define BANDLIM_RST_OPENPORT 4 /* No connection, listener */
104 #define BANDLIM_ICMP6_UNREACH 5
105 #define BANDLIM_MAX 5