1 /* Parts of this file are covered under the following copyright */ 2 /* 3 * Copyright (c) 1982, 1986, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)ip_var.h 8.1 (Berkeley) 6/10/93 35 */ 36 37 #ifndef NETINET_IP_VAR_H 38 #define NETINET_IP_VAR_H 39 40 #include <sys/socket.h> 41 42 /* 43 * Overlay for ip header used by other protocols (tcp, udp). 44 */ 45 struct ipovly { 46 char * ih_next; 47 char * ih_prev; 48 uint8 ih_x1; /* (unused) */ 49 uint8 ih_pr; /* protocol */ 50 uint16 ih_len; /* protocol length */ 51 struct in_addr ih_src; /* source internet address */ 52 struct in_addr ih_dst; /* destination internet address */ 53 }; 54 55 /* 56 * Structure stored in mbuf in inpcb.ip_options 57 * and passed to ip_output when ip options are in use. 58 * The actual length of the options (including ipopt_dst) 59 * is in m_len. 60 */ 61 #define MAX_IPOPTLEN 40 62 63 struct ipoption { 64 struct in_addr ipopt_dst; /* first-hop dst if source routed */ 65 int8 ipopt_list[MAX_IPOPTLEN]; /* options proper */ 66 }; 67 68 /* 69 * Structure attached to inpcb.ip_moptions and 70 * passed to ip_output when IP multicast options are in use. 71 */ 72 struct ip_moptions { 73 struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */ 74 uint8 imo_multicast_ttl; /* TTL for outgoing multicasts */ 75 uint8 imo_multicast_loop; /* 1 => here sends if a member */ 76 uint16 imo_num_memberships; /* no. memberships this socket */ 77 struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS]; 78 }; 79 80 struct ipasfrag { 81 #if B_HOST_IS_BENDIAN 82 uint8 ip_v:4; 83 uint8 ip_hl:4; 84 #else 85 uint8 ip_hl:4; 86 uint8 ip_v:4; 87 #endif 88 uint8 ipf_mff; 89 int16 ip_len; 90 uint16 ip_id; 91 int16 ip_off; 92 uint8 ip_ttl; 93 uint8 ip_p; 94 struct ipasfrag *ipf_next; 95 struct ipasfrag *ipf_prev; 96 }; 97 98 struct ipq { 99 struct ipq *next, *prev; 100 uint8 ipq_ttl; 101 uint8 ipq_p; 102 uint16 ipq_id; 103 struct ipasfrag *ipq_next, *ipq_prev; 104 struct in_addr ipq_src, ipq_dst; 105 }; 106 107 struct ipstat { 108 int32 ips_total; /* total packets received */ 109 int32 ips_badsum; /* checksum bad */ 110 int32 ips_tooshort; /* packet too short */ 111 int32 ips_toosmall; /* not enough data */ 112 int32 ips_badhlen; /* ip header length < data size */ 113 int32 ips_badlen; /* ip length < ip header length */ 114 int32 ips_fragments; /* fragments received */ 115 int32 ips_fragdropped; /* frags dropped (dups, out of space) */ 116 int32 ips_fragtimeout; /* fragments timed out */ 117 int32 ips_forward; /* packets forwarded */ 118 int32 ips_cantforward; /* packets rcvd for unreachable dest */ 119 int32 ips_redirectsent; /* packets forwarded on same net */ 120 int32 ips_noproto; /* unknown or unsupported protocol */ 121 int32 ips_delivered; /* datagrams delivered to upper level*/ 122 int32 ips_localout; /* total ip packets generated here */ 123 int32 ips_odropped; /* lost packets due to nobufs, etc. */ 124 int32 ips_reassembled; /* total packets reassembled ok */ 125 int32 ips_fragmented; /* datagrams sucessfully fragmented */ 126 int32 ips_ofragments; /* output fragments created */ 127 int32 ips_cantfrag; /* don't fragment flag was set, etc. */ 128 int32 ips_badoptions; /* error in option processing */ 129 int32 ips_noroute; /* packets discarded due to no route */ 130 int32 ips_badvers; /* ip version != 4 */ 131 int32 ips_rawout; /* total raw ip packets generated */ 132 int32 ips_badfrags; /* malformed fragments (bad length) */ 133 int32 ips_rcvmemdrop; /* frags dropped for lack of memory */ 134 int32 ips_toolong; /* ip length > max ip packet size */ 135 int32 ips_nogif; /* no match gif found */ 136 int32 ips_badaddr; /* invalid address on header */ 137 int32 ips_inhwcsum; /* hardware checksummed on input */ 138 int32 ips_outhwcsum; /* hardware checksummed on output */ 139 }; 140 141 //#ifdef _KERNEL_MODE 142 143 #define IP_FORWARDING 0x1 /* most of ip header exists */ 144 #define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */ 145 #define IP_RAWOUTPUT 0x4 /* raw ip header exists */ 146 #define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */ 147 #define IP_MTUDISC 0x10 /* pmtu discovery, set DF */ 148 149 #if 0 150 //struct ipstat ipstat; 151 152 void ipv4_input(struct mbuf *, int); 153 int ipv4_output(struct mbuf *, struct mbuf *, struct route *, int, void *); 154 int ipv4_ctloutput(int, struct socket *, int, int, struct mbuf **); 155 156 int ip_dooptions(struct mbuf *); 157 void ip_stripoptions (struct mbuf *, struct mbuf *); 158 struct mbuf *ip_srcroute(void); 159 160 161 #endif /* _KERNEL_MODE */ 162 163 #endif /* NETINET_IP_VAR_H */ 164