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08af97b790
UDPv4 features to UDPv6: - Add MAC checks on delivery and MAC labeling on transmit. - Check for (and reject) datagrams with destination port 0. - For multicast delivery, check the source port only if the socket being considered as a destination has been connected. - Implement UDP blackholing based on net.inet.udp.blackhole. - Add a new ICMPv6 unreachable reply rate limiting category for failed delivery attempts and implement rate limiting for UDPv6 (submitted by bz). Approved by: re (kensmith) Reviewed by: bz
90 lines
3.4 KiB
C
90 lines
3.4 KiB
C
/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)icmp_var.h 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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#ifndef _NETINET_ICMP_VAR_H_
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#define _NETINET_ICMP_VAR_H_
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/*
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* Variables related to this implementation
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* of the internet control message protocol.
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*/
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struct icmpstat {
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/* statistics related to icmp packets generated */
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u_long icps_error; /* # of calls to icmp_error */
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u_long icps_oldshort; /* no error 'cuz old ip too short */
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u_long icps_oldicmp; /* no error 'cuz old was icmp */
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u_long icps_outhist[ICMP_MAXTYPE + 1];
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/* statistics related to input messages processed */
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u_long icps_badcode; /* icmp_code out of range */
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u_long icps_tooshort; /* packet < ICMP_MINLEN */
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u_long icps_checksum; /* bad checksum */
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u_long icps_badlen; /* calculated bound mismatch */
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u_long icps_reflect; /* number of responses */
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u_long icps_inhist[ICMP_MAXTYPE + 1];
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u_long icps_bmcastecho; /* b/mcast echo requests dropped */
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u_long icps_bmcasttstamp; /* b/mcast tstamp requests dropped */
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u_long icps_badaddr; /* bad return address */
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u_long icps_noroute; /* no route back */
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};
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/*
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* Names for ICMP sysctl objects
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*/
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#define ICMPCTL_MASKREPL 1 /* allow replies to netmask requests */
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#define ICMPCTL_STATS 2 /* statistics (read-only) */
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#define ICMPCTL_ICMPLIM 3
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#define ICMPCTL_MAXID 4
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#define ICMPCTL_NAMES { \
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{ 0, 0 }, \
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{ "maskrepl", CTLTYPE_INT }, \
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{ "stats", CTLTYPE_STRUCT }, \
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{ "icmplim", CTLTYPE_INT }, \
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}
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#ifdef _KERNEL
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SYSCTL_DECL(_net_inet_icmp);
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extern struct icmpstat icmpstat; /* icmp statistics */
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extern int badport_bandlim(int);
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#define BANDLIM_UNLIMITED -1
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#define BANDLIM_ICMP_UNREACH 0
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#define BANDLIM_ICMP_ECHO 1
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#define BANDLIM_ICMP_TSTAMP 2
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#define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */
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#define BANDLIM_RST_OPENPORT 4 /* No connection, listener */
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#define BANDLIM_ICMP6_UNREACH 5
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#define BANDLIM_MAX 5
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#endif
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#endif
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