1 /* 2 * Copyright (c) 1982, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef NETINET_IP_VAR_H 31 #define NETINET_IP_VAR_H 32 33 #include <netinet/in.h> 34 #include <sys/socket.h> 35 36 /* 37 * Overlay for ip header used by other protocols (tcp, udp). 38 */ 39 struct ipovly { 40 char * ih_next; 41 char * ih_prev; 42 uint8_t ih_x1; /* (unused) */ 43 uint8_t ih_pr; /* protocol */ 44 uint16_t ih_len; /* protocol length */ 45 struct in_addr ih_src; /* source internet address */ 46 struct in_addr ih_dst; /* destination internet address */ 47 }; 48 49 /* 50 * Structure stored in mbuf in inpcb.ip_options 51 * and passed to ip_output when ip options are in use. 52 * The actual length of the options (including ipopt_dst) 53 * is in m_len. 54 */ 55 #define MAX_IPOPTLEN 40 56 57 struct ipoption { 58 struct in_addr ipopt_dst; /* first-hop dst if source routed */ 59 int8_t ipopt_list[MAX_IPOPTLEN]; /* options proper */ 60 }; 61 62 /* 63 * Structure attached to inpcb.ip_moptions and 64 * passed to ip_output when IP multicast options are in use. 65 */ 66 struct ip_moptions { 67 struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */ 68 uint8_t imo_multicast_ttl; /* TTL for outgoing multicasts */ 69 uint8_t imo_multicast_loop; /* 1 => here sends if a member */ 70 uint16_t imo_num_memberships; /* no. memberships this socket */ 71 struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS]; 72 }; 73 74 struct ipasfrag { 75 #if B_HOST_IS_BENDIAN 76 uint8_t ip_v:4; 77 uint8_t ip_hl:4; 78 #else 79 uint8_t ip_hl:4; 80 uint8_t ip_v:4; 81 #endif 82 uint8_t ipf_mff; 83 int16_t ip_len; 84 uint16_t ip_id; 85 int16_t ip_off; 86 uint8_t ip_ttl; 87 uint8_t ip_p; 88 struct ipasfrag *ipf_next; 89 struct ipasfrag *ipf_prev; 90 }; 91 92 struct ipq { 93 struct ipq *next, *prev; 94 uint8_t ipq_ttl; 95 uint8_t ipq_p; 96 uint16_t ipq_id; 97 struct ipasfrag *ipq_next, *ipq_prev; 98 struct in_addr ipq_src, ipq_dst; 99 }; 100 101 struct ipstat { 102 int32_t ips_total; /* total packets received */ 103 int32_t ips_badsum; /* checksum bad */ 104 int32_t ips_tooshort; /* packet too short */ 105 int32_t ips_toosmall; /* not enough data */ 106 int32_t ips_badhlen; /* ip header length < data size */ 107 int32_t ips_badlen; /* ip length < ip header length */ 108 int32_t ips_fragments; /* fragments received */ 109 int32_t ips_fragdropped; /* frags dropped (dups, out of space) */ 110 int32_t ips_fragtimeout; /* fragments timed out */ 111 int32_t ips_forward; /* packets forwarded */ 112 int32_t ips_cantforward; /* packets rcvd for unreachable dest */ 113 int32_t ips_redirectsent; /* packets forwarded on same net */ 114 int32_t ips_noproto; /* unknown or unsupported protocol */ 115 int32_t ips_delivered; /* datagrams delivered to upper level*/ 116 int32_t ips_localout; /* total ip packets generated here */ 117 int32_t ips_odropped; /* lost packets due to nobufs, etc. */ 118 int32_t ips_reassembled; /* total packets reassembled ok */ 119 int32_t ips_fragmented; /* datagrams sucessfully fragmented */ 120 int32_t ips_ofragments; /* output fragments created */ 121 int32_t ips_cantfrag; /* don't fragment flag was set, etc. */ 122 int32_t ips_badoptions; /* error in option processing */ 123 int32_t ips_noroute; /* packets discarded due to no route */ 124 int32_t ips_badvers; /* ip version != 4 */ 125 int32_t ips_rawout; /* total raw ip packets generated */ 126 int32_t ips_badfrags; /* malformed fragments (bad length) */ 127 int32_t ips_rcvmemdrop; /* frags dropped for lack of memory */ 128 int32_t ips_toolong; /* ip length > max ip packet size */ 129 int32_t ips_nogif; /* no match gif found */ 130 int32_t ips_badaddr; /* invalid address on header */ 131 int32_t ips_inhwcsum; /* hardware checksummed on input */ 132 int32_t ips_outhwcsum; /* hardware checksummed on output */ 133 }; 134 135 #endif /* NETINET_IP_VAR_H */ 136