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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)ip_var.h 8.2 (Berkeley) 1/9/95
| 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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)ip_var.h 8.2 (Berkeley) 1/9/95
|
34 * $Id: ip_var.h,v 1.39 1998/06/05 22:40:01 julian Exp $
| 34 * $Id: ip_var.h,v 1.40 1998/06/06 19:39:10 julian Exp $
|
35 */
36
37#ifndef _NETINET_IP_VAR_H_
38#define _NETINET_IP_VAR_H_
39
40/*
41 * Overlay for ip header used by other protocols (tcp, udp).
42 */
43struct ipovly {
44 caddr_t ih_next, ih_prev; /* for protocol sequence q's */
45 u_char ih_x1; /* (unused) */
46 u_char ih_pr; /* protocol */
47 u_short ih_len; /* protocol length */
48 struct in_addr ih_src; /* source internet address */
49 struct in_addr ih_dst; /* destination internet address */
50};
51
52/*
53 * Ip reassembly queue structure. Each fragment
54 * being reassembled is attached to one of these structures.
55 * They are timed out after ipq_ttl drops to 0, and may also
56 * be reclaimed if memory becomes tight.
57 */
58struct ipq {
59 struct ipq *next,*prev; /* to other reass headers */
60 u_char ipq_ttl; /* time for reass q to live */
61 u_char ipq_p; /* protocol of this fragment */
62 u_short ipq_id; /* sequence id for reassembly */
63 struct ipasfrag *ipq_next,*ipq_prev;
64 /* to ip headers of fragments */
65 struct in_addr ipq_src,ipq_dst;
66#ifdef IPDIVERT
67 u_short ipq_divert; /* divert protocol port */
68 u_short ipq_div_cookie; /* divert protocol cookie */
69#endif
70};
71
72/*
73 * Ip header, when holding a fragment.
74 *
75 * Note: ipf_next must be at same offset as ipq_next above
76 */
77struct ipasfrag {
78#if BYTE_ORDER == LITTLE_ENDIAN
| 35 */
36
37#ifndef _NETINET_IP_VAR_H_
38#define _NETINET_IP_VAR_H_
39
40/*
41 * Overlay for ip header used by other protocols (tcp, udp).
42 */
43struct ipovly {
44 caddr_t ih_next, ih_prev; /* for protocol sequence q's */
45 u_char ih_x1; /* (unused) */
46 u_char ih_pr; /* protocol */
47 u_short ih_len; /* protocol length */
48 struct in_addr ih_src; /* source internet address */
49 struct in_addr ih_dst; /* destination internet address */
50};
51
52/*
53 * Ip reassembly queue structure. Each fragment
54 * being reassembled is attached to one of these structures.
55 * They are timed out after ipq_ttl drops to 0, and may also
56 * be reclaimed if memory becomes tight.
57 */
58struct ipq {
59 struct ipq *next,*prev; /* to other reass headers */
60 u_char ipq_ttl; /* time for reass q to live */
61 u_char ipq_p; /* protocol of this fragment */
62 u_short ipq_id; /* sequence id for reassembly */
63 struct ipasfrag *ipq_next,*ipq_prev;
64 /* to ip headers of fragments */
65 struct in_addr ipq_src,ipq_dst;
66#ifdef IPDIVERT
67 u_short ipq_divert; /* divert protocol port */
68 u_short ipq_div_cookie; /* divert protocol cookie */
69#endif
70};
71
72/*
73 * Ip header, when holding a fragment.
74 *
75 * Note: ipf_next must be at same offset as ipq_next above
76 */
77struct ipasfrag {
78#if BYTE_ORDER == LITTLE_ENDIAN
|
79 u_char ip_hl:4,
| 79 u_int ip_hl:4,
|
80 ip_v:4;
81#endif
82#if BYTE_ORDER == BIG_ENDIAN
| 80 ip_v:4;
81#endif
82#if BYTE_ORDER == BIG_ENDIAN
|
83 u_char ip_v:4,
| 83 u_int ip_v:4,
|
84 ip_hl:4;
85#endif
86 u_char ipf_mff; /* XXX overlays ip_tos: use low bit
87 * to avoid destroying tos;
88 * copied from (ip_off&IP_MF) */
89 u_short ip_len;
90 u_short ip_id;
91 u_short ip_off;
92 u_char ip_ttl;
93 u_char ip_p;
94 u_short ip_sum;
95 struct ipasfrag *ipf_next; /* next fragment */
96 struct ipasfrag *ipf_prev; /* previous fragment */
97};
98
99/*
100 * Structure stored in mbuf in inpcb.ip_options
101 * and passed to ip_output when ip options are in use.
102 * The actual length of the options (including ipopt_dst)
103 * is in m_len.
104 */
105#define MAX_IPOPTLEN 40
106
107struct ipoption {
108 struct in_addr ipopt_dst; /* first-hop dst if source routed */
109 char ipopt_list[MAX_IPOPTLEN]; /* options proper */
110};
111
112/*
113 * Structure attached to inpcb.ip_moptions and
114 * passed to ip_output when IP multicast options are in use.
115 */
116struct ip_moptions {
117 struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */
118 u_char imo_multicast_ttl; /* TTL for outgoing multicasts */
119 u_char imo_multicast_loop; /* 1 => hear sends if a member */
120 u_short imo_num_memberships; /* no. memberships this socket */
121 struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS];
122 u_long imo_multicast_vif; /* vif num outgoing multicasts */
123};
124
125struct ipstat {
126 u_long ips_total; /* total packets received */
127 u_long ips_badsum; /* checksum bad */
128 u_long ips_tooshort; /* packet too short */
129 u_long ips_toosmall; /* not enough data */
130 u_long ips_badhlen; /* ip header length < data size */
131 u_long ips_badlen; /* ip length < ip header length */
132 u_long ips_fragments; /* fragments received */
133 u_long ips_fragdropped; /* frags dropped (dups, out of space) */
134 u_long ips_fragtimeout; /* fragments timed out */
135 u_long ips_forward; /* packets forwarded */
136 u_long ips_fastforward; /* packets fast forwarded */
137 u_long ips_cantforward; /* packets rcvd for unreachable dest */
138 u_long ips_redirectsent; /* packets forwarded on same net */
139 u_long ips_noproto; /* unknown or unsupported protocol */
140 u_long ips_delivered; /* datagrams delivered to upper level*/
141 u_long ips_localout; /* total ip packets generated here */
142 u_long ips_odropped; /* lost packets due to nobufs, etc. */
143 u_long ips_reassembled; /* total packets reassembled ok */
144 u_long ips_fragmented; /* datagrams successfully fragmented */
145 u_long ips_ofragments; /* output fragments created */
146 u_long ips_cantfrag; /* don't fragment flag was set, etc. */
147 u_long ips_badoptions; /* error in option processing */
148 u_long ips_noroute; /* packets discarded due to no route */
149 u_long ips_badvers; /* ip version != 4 */
150 u_long ips_rawout; /* total raw ip packets generated */
151 u_long ips_toolong; /* ip length > max ip packet size */
152 u_long ips_notmember; /* multicasts for unregistered grps */
153};
154
155#ifdef KERNEL
156/* flags passed to ip_output as last parameter */
157#define IP_FORWARDING 0x1 /* most of ip header exists */
158#define IP_RAWOUTPUT 0x2 /* raw ip header exists */
159#define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */
160#define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */
161
162struct inpcb;
163struct route;
164
165extern struct ipstat ipstat;
166extern u_short ip_id; /* ip packet ctr, for ids */
167extern int ip_defttl; /* default IP ttl */
168extern int ipforwarding; /* ip forwarding */
169extern u_char ip_protox[];
170extern struct socket *ip_rsvpd; /* reservation protocol daemon */
171extern struct socket *ip_mrouter; /* multicast routing daemon */
172extern int (*legal_vif_num) __P((int));
173extern u_long (*ip_mcast_src) __P((int));
174extern int rsvp_on;
175extern struct pr_usrreqs rip_usrreqs;
176
177int ip_ctloutput __P((int, struct socket *, int, int, struct mbuf **,
178 struct proc *));
179void ip_drain __P((void));
180void ip_freemoptions __P((struct ip_moptions *));
181void ip_init __P((void));
182extern int (*ip_mforward) __P((struct ip *, struct ifnet *, struct mbuf *,
183 struct ip_moptions *));
184int ip_output __P((struct mbuf *,
185 struct mbuf *, struct route *, int, struct ip_moptions *));
186void ip_savecontrol __P((struct inpcb *, struct mbuf **, struct ip *,
187 struct mbuf *));
188void ip_slowtimo __P((void));
189struct mbuf *
190 ip_srcroute __P((void));
191void ip_stripoptions __P((struct mbuf *, struct mbuf *));
192int rip_ctloutput __P((int, struct socket *, int, int, struct mbuf **,
193 struct proc *p));
194void rip_ctlinput __P((int, struct sockaddr *, void *));
195void rip_init __P((void));
196void rip_input __P((struct mbuf *, int));
197int rip_output __P((struct mbuf *, struct socket *, u_long));
198void ipip_input __P((struct mbuf *, int));
199void rsvp_input __P((struct mbuf *, int));
200int ip_rsvp_init __P((struct socket *));
201int ip_rsvp_done __P((void));
202int ip_rsvp_vif_init __P((struct socket *, struct mbuf *));
203int ip_rsvp_vif_done __P((struct socket *, struct mbuf *));
204void ip_rsvp_force_done __P((struct socket *));
205
206#ifdef IPDIVERT
207void div_init __P((void));
208void div_input __P((struct mbuf *, int));
209extern struct pr_usrreqs div_usrreqs;
210extern u_short ip_divert_port;
211extern u_short ip_divert_cookie;
212#endif /* IPDIVERT */
213
214#endif /* KERNEL */
215
216#endif /* _NETINET_IP_VAR_H_ */
| 84 ip_hl:4;
85#endif
86 u_char ipf_mff; /* XXX overlays ip_tos: use low bit
87 * to avoid destroying tos;
88 * copied from (ip_off&IP_MF) */
89 u_short ip_len;
90 u_short ip_id;
91 u_short ip_off;
92 u_char ip_ttl;
93 u_char ip_p;
94 u_short ip_sum;
95 struct ipasfrag *ipf_next; /* next fragment */
96 struct ipasfrag *ipf_prev; /* previous fragment */
97};
98
99/*
100 * Structure stored in mbuf in inpcb.ip_options
101 * and passed to ip_output when ip options are in use.
102 * The actual length of the options (including ipopt_dst)
103 * is in m_len.
104 */
105#define MAX_IPOPTLEN 40
106
107struct ipoption {
108 struct in_addr ipopt_dst; /* first-hop dst if source routed */
109 char ipopt_list[MAX_IPOPTLEN]; /* options proper */
110};
111
112/*
113 * Structure attached to inpcb.ip_moptions and
114 * passed to ip_output when IP multicast options are in use.
115 */
116struct ip_moptions {
117 struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */
118 u_char imo_multicast_ttl; /* TTL for outgoing multicasts */
119 u_char imo_multicast_loop; /* 1 => hear sends if a member */
120 u_short imo_num_memberships; /* no. memberships this socket */
121 struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS];
122 u_long imo_multicast_vif; /* vif num outgoing multicasts */
123};
124
125struct ipstat {
126 u_long ips_total; /* total packets received */
127 u_long ips_badsum; /* checksum bad */
128 u_long ips_tooshort; /* packet too short */
129 u_long ips_toosmall; /* not enough data */
130 u_long ips_badhlen; /* ip header length < data size */
131 u_long ips_badlen; /* ip length < ip header length */
132 u_long ips_fragments; /* fragments received */
133 u_long ips_fragdropped; /* frags dropped (dups, out of space) */
134 u_long ips_fragtimeout; /* fragments timed out */
135 u_long ips_forward; /* packets forwarded */
136 u_long ips_fastforward; /* packets fast forwarded */
137 u_long ips_cantforward; /* packets rcvd for unreachable dest */
138 u_long ips_redirectsent; /* packets forwarded on same net */
139 u_long ips_noproto; /* unknown or unsupported protocol */
140 u_long ips_delivered; /* datagrams delivered to upper level*/
141 u_long ips_localout; /* total ip packets generated here */
142 u_long ips_odropped; /* lost packets due to nobufs, etc. */
143 u_long ips_reassembled; /* total packets reassembled ok */
144 u_long ips_fragmented; /* datagrams successfully fragmented */
145 u_long ips_ofragments; /* output fragments created */
146 u_long ips_cantfrag; /* don't fragment flag was set, etc. */
147 u_long ips_badoptions; /* error in option processing */
148 u_long ips_noroute; /* packets discarded due to no route */
149 u_long ips_badvers; /* ip version != 4 */
150 u_long ips_rawout; /* total raw ip packets generated */
151 u_long ips_toolong; /* ip length > max ip packet size */
152 u_long ips_notmember; /* multicasts for unregistered grps */
153};
154
155#ifdef KERNEL
156/* flags passed to ip_output as last parameter */
157#define IP_FORWARDING 0x1 /* most of ip header exists */
158#define IP_RAWOUTPUT 0x2 /* raw ip header exists */
159#define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */
160#define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */
161
162struct inpcb;
163struct route;
164
165extern struct ipstat ipstat;
166extern u_short ip_id; /* ip packet ctr, for ids */
167extern int ip_defttl; /* default IP ttl */
168extern int ipforwarding; /* ip forwarding */
169extern u_char ip_protox[];
170extern struct socket *ip_rsvpd; /* reservation protocol daemon */
171extern struct socket *ip_mrouter; /* multicast routing daemon */
172extern int (*legal_vif_num) __P((int));
173extern u_long (*ip_mcast_src) __P((int));
174extern int rsvp_on;
175extern struct pr_usrreqs rip_usrreqs;
176
177int ip_ctloutput __P((int, struct socket *, int, int, struct mbuf **,
178 struct proc *));
179void ip_drain __P((void));
180void ip_freemoptions __P((struct ip_moptions *));
181void ip_init __P((void));
182extern int (*ip_mforward) __P((struct ip *, struct ifnet *, struct mbuf *,
183 struct ip_moptions *));
184int ip_output __P((struct mbuf *,
185 struct mbuf *, struct route *, int, struct ip_moptions *));
186void ip_savecontrol __P((struct inpcb *, struct mbuf **, struct ip *,
187 struct mbuf *));
188void ip_slowtimo __P((void));
189struct mbuf *
190 ip_srcroute __P((void));
191void ip_stripoptions __P((struct mbuf *, struct mbuf *));
192int rip_ctloutput __P((int, struct socket *, int, int, struct mbuf **,
193 struct proc *p));
194void rip_ctlinput __P((int, struct sockaddr *, void *));
195void rip_init __P((void));
196void rip_input __P((struct mbuf *, int));
197int rip_output __P((struct mbuf *, struct socket *, u_long));
198void ipip_input __P((struct mbuf *, int));
199void rsvp_input __P((struct mbuf *, int));
200int ip_rsvp_init __P((struct socket *));
201int ip_rsvp_done __P((void));
202int ip_rsvp_vif_init __P((struct socket *, struct mbuf *));
203int ip_rsvp_vif_done __P((struct socket *, struct mbuf *));
204void ip_rsvp_force_done __P((struct socket *));
205
206#ifdef IPDIVERT
207void div_init __P((void));
208void div_input __P((struct mbuf *, int));
209extern struct pr_usrreqs div_usrreqs;
210extern u_short ip_divert_port;
211extern u_short ip_divert_cookie;
212#endif /* IPDIVERT */
213
214#endif /* KERNEL */
215
216#endif /* _NETINET_IP_VAR_H_ */
|