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 */
39struct 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
57struct 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 */
66struct 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
74struct 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
92struct 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
101struct  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