1 /*- 2 * Copyright (c) 1982, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)icmp_var.h 8.1 (Berkeley) 6/10/93 30 * $FreeBSD$ 31 */ 32 33 #ifndef _NETINET_ICMP_VAR_H_ 34 #define _NETINET_ICMP_VAR_H_ 35 36 37 /* 38 * Variables related to this implementation 39 * of the internet control message protocol. 40 */ 41 struct icmpstat { 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 */ 58 }; 59 60 #ifdef _KERNEL 61 #include <sys/counter.h> 62 63 VNET_PCPUSTAT_DECLARE(struct icmpstat, icmpstat); 64 /* 65 * In-kernel consumers can use these accessor macros directly to update 66 * stats. 67 */ 68 #define ICMPSTAT_ADD(name, val) \ 69 VNET_PCPUSTAT_ADD(struct icmpstat, icmpstat, name, (val)) 70 #define ICMPSTAT_INC(name) ICMPSTAT_ADD(name, 1) 71 72 /* 73 * Kernel module consumers must use this accessor macro. 74 */ 75 void kmod_icmpstat_inc(int statnum); 76 #define KMOD_ICMPSTAT_INC(name) \ 77 kmod_icmpstat_inc(offsetof(struct icmpstat, name) / sizeof(uint64_t)) 78 #endif 79 80 /* 81 * Identifiers for ICMP sysctl nodes 82 */ 83 #define ICMPCTL_MASKREPL 1 /* allow replies to netmask requests */ 84 #define ICMPCTL_STATS 2 /* statistics (read-only) */ 85 #define ICMPCTL_ICMPLIM 3 86 87 #ifdef _KERNEL 88 SYSCTL_DECL(_net_inet_icmp); 89 90 extern int badport_bandlim(int); 91 #define BANDLIM_UNLIMITED -1 92 #define BANDLIM_ICMP_UNREACH 0 93 #define BANDLIM_ICMP_ECHO 1 94 #define BANDLIM_ICMP_TSTAMP 2 95 #define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */ 96 #define BANDLIM_RST_OPENPORT 4 /* No connection, listener */ 97 #define BANDLIM_ICMP6_UNREACH 5 98 #define BANDLIM_SCTP_OOTB 6 99 #define BANDLIM_MAX 7 100 #endif 101 102 #endif 103