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 <netinet/in.h> 41 #include <sys/socket.h> 42 43 /* 44 * Overlay for ip header used by other protocols (tcp, udp). 45 */ 46 struct ipovly { 47 char * ih_next; 48 char * ih_prev; 49 uint8_t ih_x1; /* (unused) */ 50 uint8_t ih_pr; /* protocol */ 51 uint16_t ih_len; /* protocol length */ 52 struct in_addr ih_src; /* source internet address */ 53 struct in_addr ih_dst; /* destination internet address */ 54 }; 55 56 /* 57 * Structure stored in mbuf in inpcb.ip_options 58 * and passed to ip_output when ip options are in use. 59 * The actual length of the options (including ipopt_dst) 60 * is in m_len. 61 */ 62 #define MAX_IPOPTLEN 40 63 64 struct ipoption { 65 struct in_addr ipopt_dst; /* first-hop dst if source routed */ 66 int8_t ipopt_list[MAX_IPOPTLEN]; /* options proper */ 67 }; 68 69 /* 70 * Structure attached to inpcb.ip_moptions and 71 * passed to ip_output when IP multicast options are in use. 72 */ 73 struct ip_moptions { 74 struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */ 75 uint8_t imo_multicast_ttl; /* TTL for outgoing multicasts */ 76 uint8_t imo_multicast_loop; /* 1 => here sends if a member */ 77 uint16_t imo_num_memberships; /* no. memberships this socket */ 78 struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS]; 79 }; 80 81 struct ipasfrag { 82 #if B_HOST_IS_BENDIAN 83 uint8_t ip_v:4; 84 uint8_t ip_hl:4; 85 #else 86 uint8_t ip_hl:4; 87 uint8_t ip_v:4; 88 #endif 89 uint8_t ipf_mff; 90 int16_t ip_len; 91 uint16_t ip_id; 92 int16_t ip_off; 93 uint8_t ip_ttl; 94 uint8_t ip_p; 95 struct ipasfrag *ipf_next; 96 struct ipasfrag *ipf_prev; 97 }; 98 99 struct ipq { 100 struct ipq *next, *prev; 101 uint8_t ipq_ttl; 102 uint8_t ipq_p; 103 uint16_t ipq_id; 104 struct ipasfrag *ipq_next, *ipq_prev; 105 struct in_addr ipq_src, ipq_dst; 106 }; 107 108 struct ipstat { 109 int32_t ips_total; /* total packets received */ 110 int32_t ips_badsum; /* checksum bad */ 111 int32_t ips_tooshort; /* packet too short */ 112 int32_t ips_toosmall; /* not enough data */ 113 int32_t ips_badhlen; /* ip header length < data size */ 114 int32_t ips_badlen; /* ip length < ip header length */ 115 int32_t ips_fragments; /* fragments received */ 116 int32_t ips_fragdropped; /* frags dropped (dups, out of space) */ 117 int32_t ips_fragtimeout; /* fragments timed out */ 118 int32_t ips_forward; /* packets forwarded */ 119 int32_t ips_cantforward; /* packets rcvd for unreachable dest */ 120 int32_t ips_redirectsent; /* packets forwarded on same net */ 121 int32_t ips_noproto; /* unknown or unsupported protocol */ 122 int32_t ips_delivered; /* datagrams delivered to upper level*/ 123 int32_t ips_localout; /* total ip packets generated here */ 124 int32_t ips_odropped; /* lost packets due to nobufs, etc. */ 125 int32_t ips_reassembled; /* total packets reassembled ok */ 126 int32_t ips_fragmented; /* datagrams sucessfully fragmented */ 127 int32_t ips_ofragments; /* output fragments created */ 128 int32_t ips_cantfrag; /* don't fragment flag was set, etc. */ 129 int32_t ips_badoptions; /* error in option processing */ 130 int32_t ips_noroute; /* packets discarded due to no route */ 131 int32_t ips_badvers; /* ip version != 4 */ 132 int32_t ips_rawout; /* total raw ip packets generated */ 133 int32_t ips_badfrags; /* malformed fragments (bad length) */ 134 int32_t ips_rcvmemdrop; /* frags dropped for lack of memory */ 135 int32_t ips_toolong; /* ip length > max ip packet size */ 136 int32_t ips_nogif; /* no match gif found */ 137 int32_t ips_badaddr; /* invalid address on header */ 138 int32_t ips_inhwcsum; /* hardware checksummed on input */ 139 int32_t ips_outhwcsum; /* hardware checksummed on output */ 140 }; 141 142 /* #ifdef _KERNEL_MODE */ 143 144 #define IP_FORWARDING 0x1 /* most of ip header exists */ 145 #define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */ 146 #define IP_RAWOUTPUT 0x4 /* raw ip header exists */ 147 #define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */ 148 #define IP_MTUDISC 0x10 /* pmtu discovery, set DF */ 149 150 #if 0 151 /* struct ipstat ipstat; */ 152 153 void ipv4_input(struct mbuf *, int); 154 int ipv4_output(struct mbuf *, struct mbuf *, struct route *, int, void *); 155 int ipv4_ctloutput(int, struct socket *, int, int, struct mbuf **); 156 157 int ip_dooptions(struct mbuf *); 158 void ip_stripoptions (struct mbuf *, struct mbuf *); 159 struct mbuf *ip_srcroute(void); 160 161 162 #endif /* _KERNEL_MODE */ 163 164 #endif /* NETINET_IP_VAR_H */ 165