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icmp_var.h revision 1.26 
      1 /*	$NetBSD: icmp_var.h,v 1.26 2008/04/06 19:04:50 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1986, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)icmp_var.h	8.1 (Berkeley) 6/10/93
     32  */
     33 
     34 #ifndef _NETINET_ICMP_VAR_H_
     35 #define _NETINET_ICMP_VAR_H_
     36 
     37 /*
     38  * Variables related to this implementation
     39  * of the internet control message protocol.
     40  */
     41 
     42 /*
     43  * ICMP stastistics.
     44  * Each counter is an unsigned 64-bit value.
     45  */
     46 #define	ICMP_STAT_ERROR		0	/* # of calls to icmp_error */
     47 #define	ICMP_STAT_OLDSHORT	1	/* no error (old ip too short) */
     48 #define	ICMP_STAT_OLDICMP	2	/* no error (old was icmp) */
     49 #define	ICMP_STAT_OUTHIST	3	/* # of output messages */
     50 		/* space for ICMP_MAXTYPE + 1 (19) counters */
     51 #define	ICMP_STAT_BADCODE	22	/* icmp_code out of range */
     52 #define	ICMP_STAT_TOOSHORT	23	/* packet < ICMP_MINLEN */
     53 #define	ICMP_STAT_CHECKSUM	24	/* bad checksum */
     54 #define	ICMP_STAT_BADLEN	25	/* calculated bound mismatch */
     55 #define	ICMP_STAT_REFLECT	26	/* number of responses */
     56 #define	ICMP_STAT_INHIST	27	/* # of input messages */
     57 		/* space for ICMP_MAXTYPE + 1 (19) counters */
     58 #define	ICMP_STAT_PMTUCHG	46	/* path MTU changes */
     59 
     60 #define	ICMP_NSTATS		47
     61 
     62 #if ICMP_MAXTYPE != 18
     63 #error ICMP_MAXTYPE too large for ICMP statistics
     64 #endif
     65 
     66 /*
     67  * Names for ICMP sysctl objects
     68  */
     69 #define	ICMPCTL_MASKREPL	1	/* allow replies to netmask requests */
     70 #if 0	/*obsoleted*/
     71 #define ICMPCTL_ERRRATELIMIT	2	/* error rate limit */
     72 #endif
     73 #define ICMPCTL_RETURNDATABYTES	3	/* # of bytes to include in errors */
     74 #define ICMPCTL_ERRPPSLIMIT	4	/* ICMP error pps limitation */
     75 #define ICMPCTL_REDIRACCEPT	5	/* Accept redirects from routers */
     76 #define ICMPCTL_REDIRTIMEOUT	6	/* Remove routes added via redirects */
     77 #define	ICMPCTL_STATS		7	/* ICMP statistics */
     78 #define ICMPCTL_MAXID		8
     79 
     80 #define ICMPCTL_NAMES { \
     81 	{ 0, 0 }, \
     82 	{ "maskrepl", CTLTYPE_INT }, \
     83 	{ 0, 0 }, \
     84 	{ "returndatabytes", CTLTYPE_INT }, \
     85 	{ "errppslimit", CTLTYPE_INT }, \
     86 	{ "rediraccept", CTLTYPE_INT }, \
     87 	{ "redirtimeout", CTLTYPE_INT }, \
     88 	{ "stats", CTLTYPE_STRUCT }, \
     89 }
     90 
     91 #ifdef _KERNEL
     92 extern uint64_t	icmpstat[ICMP_NSTATS];
     93 
     94 #ifdef __NO_STRICT_ALIGNMENT
     95 #define	ICMP_HDR_ALIGNED_P(ic)	1
     96 #else
     97 #define	ICMP_HDR_ALIGNED_P(ic)	((((vaddr_t) (ic)) & 3) == 0)
     98 #endif
     99 #endif /* _KERNEL_ */
    100 
    101 #endif /* !_NETINET_ICMP_VAR_H_ */
    102