| 1 | /* Modified for gcc/os2 by bird 2003
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| 2 | *
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| 3 | * Copyright (c) 1982, 1986, 1993
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| 4 | * The Regents of the University of California. All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | * 1. Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * 2. Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * 3. All advertising materials mentioning features or use of this software
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| 15 | * must display the following acknowledgement:
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| 16 | * This product includes software developed by the University of
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| 17 | * California, Berkeley and its contributors.
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| 18 | * 4. Neither the name of the University nor the names of its contributors
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| 19 | * may be used to endorse or promote products derived from this software
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| 20 | * without specific prior written permission.
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| 21 | *
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| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 32 | * SUCH DAMAGE.
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| 33 | *
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| 34 | * @(#)ip_var.h 8.2 (Berkeley) 1/9/95
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| 35 | * $FreeBSD: src/sys/netinet/ip_var.h,v 1.50.2.12 2003/02/27 04:50:02 silby Exp $
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| 36 | */
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| 37 |
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| 38 | #ifndef _NETINET_IP_VAR_H_
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| 39 | #define _NETINET_IP_VAR_H_
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| 40 | #ifndef TCPV40HDRS
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| 41 |
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| 42 | #if 0 /* not os/2 - no such header */
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| 43 | #include <sys/queue.h>
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| 44 | #endif
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| 45 |
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| 46 | /*
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| 47 | * Overlay for ip header used by other protocols (tcp, udp).
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| 48 | */
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| 49 | #pragma pack(1) /* OS/2 paranoia */
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| 50 | struct ipovly {
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| 51 | #if 0 /* different on OS/2 */
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| 52 | u_char ih_x1[9]; /* (unused) */
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| 53 | #else
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| 54 | caddr_t ih_next, ih_prev; /* for protocol sequence q's */
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| 55 | u_char ih_x1; /* (unused) */
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| 56 | #endif
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| 57 | u_char ih_pr; /* protocol */
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| 58 | u_short ih_len; /* protocol length */
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| 59 | struct in_addr ih_src; /* source internet address */
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| 60 | struct in_addr ih_dst; /* destination internet address */
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| 61 | };
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| 62 | #pragma pack()
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| 63 |
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| 64 | /*
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| 65 | * Ip reassembly queue structure. Each fragment
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| 66 | * being reassembled is attached to one of these structures.
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| 67 | * They are timed out after ipq_ttl drops to 0, and may also
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| 68 | * be reclaimed if memory becomes tight.
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| 69 | */
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| 70 | #pragma pack(1) /* OS/2 paranoia */
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| 71 | struct ipq {
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| 72 | struct ipq *next,*prev; /* to other reass headers */
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| 73 | u_char ipq_ttl; /* time for reass q to live */
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| 74 | u_char ipq_p; /* protocol of this fragment */
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| 75 | u_short ipq_id; /* sequence id for reassembly */
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| 76 | #if 0 /* Different on OS/2 */
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| 77 | struct mbuf *ipq_frags; /* to ip headers of fragments */
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| 78 | struct in_addr ipq_src,ipq_dst;
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| 79 | u_char ipq_nfrags; /* # frags in this packet */
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| 80 | #ifdef IPDIVERT
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| 81 | u_int32_t ipq_div_info; /* ipfw divert port & flags */
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| 82 | u_int16_t ipq_div_cookie; /* ipfw divert cookie */
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| 83 | #endif
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| 84 | #else /* OS2: */
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| 85 | struct ipasfrag *ipq_next,*ipq_prev;
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| 86 | /* to ip headers of fragments */
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| 87 | struct in_addr ipq_src,ipq_dst;
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| 88 | #endif
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| 89 | };
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| 90 | #pragma pack()
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| 91 |
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| 92 |
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| 93 | /*
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| 94 | * Structure stored in mbuf in inpcb.ip_options
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| 95 | * and passed to ip_output when ip options are in use.
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| 96 | * The actual length of the options (including ipopt_dst)
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| 97 | * is in m_len.
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| 98 | */
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| 99 | #define MAX_IPOPTLEN 40
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| 100 | #if 0 /* different/not on OS/2 */
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| 101 | struct ipoption {
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| 102 | struct in_addr ipopt_dst; /* first-hop dst if source routed */
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| 103 | char ipopt_list[MAX_IPOPTLEN]; /* options proper */
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| 104 | };
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| 105 |
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| 106 | /*
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| 107 | * Structure attached to inpcb.ip_moptions and
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| 108 | * passed to ip_output when IP multicast options are in use.
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| 109 | */
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| 110 | struct ip_moptions {
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| 111 | struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */
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| 112 | struct in_addr imo_multicast_addr; /* ifindex/addr on MULTICAST_IF */
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| 113 | u_char imo_multicast_ttl; /* TTL for outgoing multicasts */
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| 114 | u_char imo_multicast_loop; /* 1 => hear sends if a member */
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| 115 | u_short imo_num_memberships; /* no. memberships this socket */
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| 116 | struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS];
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| 117 | u_long imo_multicast_vif; /* vif num outgoing multicasts */
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| 118 | };
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| 119 |
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| 120 | #else /* OS2: */
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| 121 |
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| 122 | /*
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| 123 | * Ip header, when holding a fragment.
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| 124 | *
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| 125 | * Note: ipf_next must be at same offset as ipq_next above
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| 126 | */
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| 127 | #pragma pack(1)
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| 128 | struct ipasfrag {
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| 129 | #if BYTE_ORDER == LITTLE_ENDIAN
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| 130 | unsigned ip_hl:4,
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| 131 | ip_v:4;
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| 132 | #endif
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| 133 | #if BYTE_ORDER == BIG_ENDIAN
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| 134 | unsigned ip_v:4,
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| 135 | ip_hl:4;
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| 136 | #endif
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| 137 | u_char ipf_mff; /* XXX overlays ip_tos: use low bit
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| 138 | * to avoid destroying tos;
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| 139 | * copied from (ip_off&IP_MF) */
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| 140 | u_short ip_len; /* should be ushort rather than short */
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| 141 | u_short ip_id;
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| 142 | short ip_off;
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| 143 | u_char ip_ttl;
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| 144 | u_char ip_p;
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| 145 | u_short ip_sum;
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| 146 | struct ipasfrag *ipf_next; /* next fragment */
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| 147 | struct ipasfrag *ipf_prev; /* previous fragment */
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| 148 | };
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| 149 | #pragma pack()
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| 150 |
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| 151 | #endif /* OS2 */
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| 152 |
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| 153 | struct ipstat {
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| 154 | u_long ips_total; /* total packets received */
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| 155 | u_long ips_badsum; /* checksum bad */
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| 156 | u_long ips_tooshort; /* packet too short */
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| 157 | u_long ips_toosmall; /* not enough data */
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| 158 | u_long ips_badhlen; /* ip header length < data size */
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| 159 | u_long ips_badlen; /* ip length < ip header length */
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| 160 | u_long ips_fragments; /* fragments received */
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| 161 | u_long ips_fragdropped; /* frags dropped (dups, out of space) */
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| 162 | u_long ips_fragtimeout; /* fragments timed out */
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| 163 | u_long ips_forward; /* packets forwarded */
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| 164 | #if 0 /* not on OS/2 */
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| 165 | u_long ips_fastforward; /* packets fast forwarded */
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| 166 | #endif
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| 167 | u_long ips_cantforward; /* packets rcvd for unreachable dest */
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| 168 | u_long ips_redirectsent; /* packets forwarded on same net */
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| 169 | u_long ips_noproto; /* unknown or unsupported protocol */
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| 170 | u_long ips_delivered; /* datagrams delivered to upper level*/
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| 171 | u_long ips_localout; /* total ip packets generated here */
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| 172 | u_long ips_odropped; /* lost packets due to nobufs, etc. */
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| 173 | u_long ips_reassembled; /* total packets reassembled ok */
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| 174 | u_long ips_fragmented; /* datagrams successfully fragmented */
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| 175 | u_long ips_ofragments; /* output fragments created */
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| 176 | u_long ips_cantfrag; /* don't fragment flag was set, etc. */
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| 177 | u_long ips_badoptions; /* error in option processing */
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| 178 | u_long ips_noroute; /* packets discarded due to no route */
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| 179 | u_long ips_badvers; /* ip version != 4 */
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| 180 | u_long ips_rawout; /* total raw ip packets generated */
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| 181 | #if 0 /* not on OS/2 */
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| 182 | u_long ips_toolong; /* ip length > max ip packet size */
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| 183 | u_long ips_notmember; /* multicasts for unregistered grps */
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| 184 | u_long ips_nogif; /* no match gif found */
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| 185 | u_long ips_badaddr; /* invalid address on header */
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| 186 | #endif
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| 187 | };
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| 188 |
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| 189 | #if 0 /* not on OS/2 */
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| 190 |
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| 191 | #ifdef _KERNEL
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| 192 |
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| 193 | /* flags passed to ip_output as last parameter */
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| 194 | #define IP_FORWARDING 0x1 /* most of ip header exists */
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| 195 | #define IP_RAWOUTPUT 0x2 /* raw ip header exists */
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| 196 | #define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */
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| 197 | #define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */
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| 198 |
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| 199 | struct ip;
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| 200 | struct inpcb;
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| 201 | struct route;
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| 202 | struct sockopt;
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| 203 |
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| 204 | extern struct ipstat ipstat;
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| 205 | #ifndef RANDOM_IP_ID
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| 206 | extern u_short ip_id; /* ip packet ctr, for ids */
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| 207 | #endif
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| 208 | extern int ip_defttl; /* default IP ttl */
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| 209 | extern int ipforwarding; /* ip forwarding */
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| 210 | extern struct route ipforward_rt; /* ip forwarding cached route */
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| 211 | extern u_char ip_protox[];
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| 212 | extern struct socket *ip_rsvpd; /* reservation protocol daemon */
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| 213 | extern struct socket *ip_mrouter; /* multicast routing daemon */
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| 214 | extern int (*legal_vif_num)(int);
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| 215 | extern u_long (*ip_mcast_src)(int);
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| 216 | extern int rsvp_on;
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| 217 | extern struct pr_usrreqs rip_usrreqs;
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| 218 |
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| 219 | int ip_ctloutput(struct socket *, struct sockopt *sopt);
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| 220 | void ip_drain(void);
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| 221 | void ip_freemoptions(struct ip_moptions *);
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| 222 | void ip_init(void);
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| 223 | extern int (*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *,
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| 224 | struct ip_moptions *);
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| 225 | int ip_output(struct mbuf *,
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| 226 | struct mbuf *, struct route *, int, struct ip_moptions *,
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| 227 | struct inpcb *);
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| 228 | struct in_ifaddr *
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| 229 | ip_rtaddr(struct in_addr, struct route *);
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| 230 | void ip_savecontrol(struct inpcb *, struct mbuf **, struct ip *,
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| 231 | struct mbuf *);
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| 232 | void ip_slowtimo(void);
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| 233 | struct mbuf *
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| 234 | ip_srcroute(void);
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| 235 | void ip_stripoptions(struct mbuf *, struct mbuf *);
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| 236 | #ifdef RANDOM_IP_ID
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| 237 | u_int16_t
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| 238 | ip_randomid(void);
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| 239 | #endif
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| 240 | int rip_ctloutput(struct socket *, struct sockopt *);
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| 241 | void rip_ctlinput(int, struct sockaddr *, void *);
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| 242 | void rip_init(void);
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| 243 | void rip_input(struct mbuf *, int, int);
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| 244 | int rip_output(struct mbuf *, struct socket *, u_long);
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| 245 | extern void (*ipip_input)(struct mbuf *, int, int);
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| 246 | void rsvp_input(struct mbuf *, int, int);
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| 247 | int ip_rsvp_init(struct socket *);
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| 248 | int ip_rsvp_done(void);
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| 249 | extern int (*ip_rsvp_vif)(struct socket *, struct sockopt *);
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| 250 | extern void (*ip_rsvp_force_done)(struct socket *);
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| 251 | extern void (*rsvp_input_p)(struct mbuf *m, int off, int proto);
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| 252 |
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| 253 | #ifdef IPDIVERT
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| 254 | void div_init(void);
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| 255 | void div_input(struct mbuf *, int, int);
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| 256 | void divert_packet(struct mbuf *m, int incoming, int port, int rule);
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| 257 | extern struct pr_usrreqs div_usrreqs;
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| 258 | #endif
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| 259 |
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| 260 | void in_delayed_cksum(struct mbuf *m);
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| 261 |
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| 262 | #endif /* _KERNEL */
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| 263 |
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| 264 |
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| 265 | #else /*OS2: */
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| 266 |
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| 267 | /*
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| 268 | * Names for IP sysctl objects
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| 269 | */
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| 270 | #define IPCTL_FORWARDING 1 /* act as router */
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| 271 | #define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */
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| 272 | #define IPCTL_INETCFG 40 /* Generic IP Inetcfg switching */
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| 273 | #define IPCTL_INETVER 41 /* sysctl: AFINET Version */
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| 274 | #define IPCTL_FORWARD 42 /* sysctl:IP Forwarding */
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| 275 | #define IPCTL_FIREWALL 43 /* sysctl:FIREWALL flag */
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| 276 | #define IPCTL_ARPTKILLC 44 /* sysctl:ARP cache completed entry TO */
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| 277 | #define IPCTL_ARPTKILLI 45 /* sysctl:ARP cache incomplete entry TO */
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| 278 | #define FRAGCTL_TTL 46 /* sysctl:Fragments TTL */
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| 279 | #define IPCTL_SYNATTACK 47 /* sysctl:SYN Attack flg ON/OFF */
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| 280 | #define IPCTL_MULTIDEFROUTES 48 /* sysctl:Multiple def routes. lynx stuff */
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| 281 |
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| 282 | #define IPCTL_NAMES { \
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| 283 | { 0, 0 }, \
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| 284 | { "forwarding", CTLTYPE_INT }, \
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| 285 | { "redirect", CTLTYPE_INT }, \
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| 286 | { "mtu", CTLTYPE_INT }, \
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| 287 | { "multi-default-routes", CTLTYPE_INT }, \
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| 288 | { "inetver", CTLTYPE_INETVER }, \
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| 289 | { "inetcfg", CTLTYPE_INETCFG }, \
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| 290 | }
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| 291 | #endif /* OS2 (else) */
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| 292 |
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| 293 | #endif /* !TCPV40HDRS */
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| 294 | #endif /* !_NETINET_IP_VAR_H_ */
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