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31 * @(#)icmp_var.h 8.1 (Berkeley) 6/10/93
35 #ifndef _NETINET_ICMP_VAR_H_
36 #define _NETINET_ICMP_VAR_H_
40 * Variables related to this implementation
41 * of the internet control message protocol.
44 /* statistics related to icmp packets generated */
45 u_long icps_error; /* # of calls to icmp_error */
46 u_long icps_oldshort; /* no error 'cuz old ip too short */
47 u_long icps_oldicmp; /* no error 'cuz old was icmp */
48 u_long icps_outhist[ICMP_MAXTYPE + 1];
49 /* statistics related to input messages processed */
50 u_long icps_badcode; /* icmp_code out of range */
51 u_long icps_tooshort; /* packet < ICMP_MINLEN */
52 u_long icps_checksum; /* bad checksum */
53 u_long icps_badlen; /* calculated bound mismatch */
54 u_long icps_reflect; /* number of responses */
55 u_long icps_inhist[ICMP_MAXTYPE + 1];
56 u_long icps_bmcastecho; /* b/mcast echo requests dropped */
57 u_long icps_bmcasttstamp; /* b/mcast tstamp requests dropped */
58 u_long icps_badaddr; /* bad return address */
59 u_long icps_noroute; /* no route back */
63 #include <sys/counter.h>
65 VNET_PCPUSTAT_DECLARE(struct icmpstat, icmpstat);
67 * In-kernel consumers can use these accessor macros directly to update
70 #define ICMPSTAT_ADD(name, val) \
71 VNET_PCPUSTAT_ADD(struct icmpstat, icmpstat, name, (val))
72 #define ICMPSTAT_INC(name) ICMPSTAT_ADD(name, 1)
75 * Kernel module consumers must use this accessor macro.
77 void kmod_icmpstat_inc(int statnum);
78 #define KMOD_ICMPSTAT_INC(name) \
79 kmod_icmpstat_inc(offsetof(struct icmpstat, name) / sizeof(uint64_t))
83 * Identifiers for ICMP sysctl nodes
85 #define ICMPCTL_MASKREPL 1 /* allow replies to netmask requests */
86 #define ICMPCTL_STATS 2 /* statistics (read-only) */
87 #define ICMPCTL_ICMPLIM 3
90 SYSCTL_DECL(_net_inet_icmp);
92 extern int badport_bandlim(int);
93 #define BANDLIM_UNLIMITED -1
94 #define BANDLIM_ICMP_UNREACH 0
95 #define BANDLIM_ICMP_ECHO 1
96 #define BANDLIM_ICMP_TSTAMP 2
97 #define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */
98 #define BANDLIM_RST_OPENPORT 4 /* No connection, listener */
99 #define BANDLIM_ICMP6_UNREACH 5
100 #define BANDLIM_SCTP_OOTB 6
101 #define BANDLIM_MAX 7