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1c79356b | 1 | /* |
5d5c5d0d A |
2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
3 | * | |
8f6c56a5 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
1c79356b | 5 | * |
8f6c56a5 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License | |
8 | * Version 2.0 (the 'License'). You may not use this file except in | |
9 | * compliance with the License. The rights granted to you under the License | |
10 | * may not be used to create, or enable the creation or redistribution of, | |
11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
12 | * circumvent, violate, or enable the circumvention or violation of, any | |
13 | * terms of an Apple operating system software license agreement. | |
14 | * | |
15 | * Please obtain a copy of the License at | |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
17 | * | |
18 | * The Original Code and all software distributed under the License are | |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
23 | * Please see the License for the specific language governing rights and | |
8ad349bb | 24 | * limitations under the License. |
8f6c56a5 A |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
1c79356b A |
27 | */ |
28 | /* | |
29 | * Copyright (c) 1982, 1986, 1993 | |
30 | * The Regents of the University of California. All rights reserved. | |
31 | * | |
32 | * Redistribution and use in source and binary forms, with or without | |
33 | * modification, are permitted provided that the following conditions | |
34 | * are met: | |
35 | * 1. Redistributions of source code must retain the above copyright | |
36 | * notice, this list of conditions and the following disclaimer. | |
37 | * 2. Redistributions in binary form must reproduce the above copyright | |
38 | * notice, this list of conditions and the following disclaimer in the | |
39 | * documentation and/or other materials provided with the distribution. | |
40 | * 3. All advertising materials mentioning features or use of this software | |
41 | * must display the following acknowledgement: | |
42 | * This product includes software developed by the University of | |
43 | * California, Berkeley and its contributors. | |
44 | * 4. Neither the name of the University nor the names of its contributors | |
45 | * may be used to endorse or promote products derived from this software | |
46 | * without specific prior written permission. | |
47 | * | |
48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
58 | * SUCH DAMAGE. | |
59 | * | |
60 | * @(#)ip_var.h 8.2 (Berkeley) 1/9/95 | |
61 | */ | |
62 | ||
63 | #ifndef _NETINET_IP_VAR_H_ | |
64 | #define _NETINET_IP_VAR_H_ | |
9bccf70c | 65 | #include <sys/appleapiopts.h> |
1c79356b A |
66 | |
67 | /* | |
68 | * Overlay for ip header used by other protocols (tcp, udp). | |
69 | */ | |
70 | struct ipovly { | |
71 | u_char ih_x1[9]; /* (unused) */ | |
72 | u_char ih_pr; /* protocol */ | |
73 | u_short ih_len; /* protocol length */ | |
74 | struct in_addr ih_src; /* source internet address */ | |
75 | struct in_addr ih_dst; /* destination internet address */ | |
76 | }; | |
77 | ||
91447636 | 78 | #ifdef KERNEL_PRIVATE |
1c79356b A |
79 | /* |
80 | * Ip reassembly queue structure. Each fragment | |
81 | * being reassembled is attached to one of these structures. | |
82 | * They are timed out after ipq_ttl drops to 0, and may also | |
83 | * be reclaimed if memory becomes tight. | |
84 | */ | |
85 | struct ipq { | |
86 | struct ipq *next,*prev; /* to other reass headers */ | |
87 | u_char ipq_ttl; /* time for reass q to live */ | |
88 | u_char ipq_p; /* protocol of this fragment */ | |
89 | u_short ipq_id; /* sequence id for reassembly */ | |
90 | struct mbuf *ipq_frags; /* to ip headers of fragments */ | |
91 | struct in_addr ipq_src,ipq_dst; | |
483a1d10 | 92 | u_long ipq_nfrags; |
91447636 A |
93 | TAILQ_ENTRY(ipq) ipq_list; |
94 | u_long reserved[1]; /* for future use */ | |
1c79356b | 95 | #if IPDIVERT |
9bccf70c A |
96 | #ifdef IPDIVERT_44 |
97 | u_int32_t ipq_div_info; /* ipfw divert port & flags */ | |
98 | #else | |
99 | u_int16_t ipq_divert; /* ipfw divert port (Maintain backward compat.) */ | |
100 | #endif | |
101 | u_int16_t ipq_div_cookie; /* ipfw divert cookie */ | |
1c79356b A |
102 | #endif |
103 | }; | |
104 | ||
105 | /* | |
106 | * Structure stored in mbuf in inpcb.ip_options | |
107 | * and passed to ip_output when ip options are in use. | |
108 | * The actual length of the options (including ipopt_dst) | |
109 | * is in m_len. | |
110 | */ | |
91447636 | 111 | #endif /* KERNEL_PRIVATE */ |
1c79356b | 112 | #define MAX_IPOPTLEN 40 |
91447636 | 113 | #ifdef KERNEL_PRIVATE |
1c79356b A |
114 | |
115 | struct ipoption { | |
116 | struct in_addr ipopt_dst; /* first-hop dst if source routed */ | |
117 | char ipopt_list[MAX_IPOPTLEN]; /* options proper */ | |
118 | }; | |
119 | ||
120 | /* | |
121 | * Structure attached to inpcb.ip_moptions and | |
122 | * passed to ip_output when IP multicast options are in use. | |
123 | */ | |
124 | struct ip_moptions { | |
125 | struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */ | |
126 | u_char imo_multicast_ttl; /* TTL for outgoing multicasts */ | |
127 | u_char imo_multicast_loop; /* 1 => hear sends if a member */ | |
128 | u_short imo_num_memberships; /* no. memberships this socket */ | |
129 | struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS]; | |
130 | u_long imo_multicast_vif; /* vif num outgoing multicasts */ | |
9bccf70c | 131 | struct in_addr imo_multicast_addr; /* ifindex/addr on MULTICAST_IF */ |
1c79356b A |
132 | }; |
133 | ||
91447636 A |
134 | /* mbuf tag for ip_forwarding info */ |
135 | struct ip_fwd_tag { | |
136 | struct sockaddr_in *next_hop; /* next_hop */ | |
137 | }; | |
138 | ||
139 | #endif /* KERNEL_PRIVATE */ | |
140 | ||
1c79356b A |
141 | struct ipstat { |
142 | u_long ips_total; /* total packets received */ | |
143 | u_long ips_badsum; /* checksum bad */ | |
144 | u_long ips_tooshort; /* packet too short */ | |
145 | u_long ips_toosmall; /* not enough data */ | |
146 | u_long ips_badhlen; /* ip header length < data size */ | |
147 | u_long ips_badlen; /* ip length < ip header length */ | |
148 | u_long ips_fragments; /* fragments received */ | |
149 | u_long ips_fragdropped; /* frags dropped (dups, out of space) */ | |
150 | u_long ips_fragtimeout; /* fragments timed out */ | |
151 | u_long ips_forward; /* packets forwarded */ | |
152 | u_long ips_fastforward; /* packets fast forwarded */ | |
153 | u_long ips_cantforward; /* packets rcvd for unreachable dest */ | |
154 | u_long ips_redirectsent; /* packets forwarded on same net */ | |
155 | u_long ips_noproto; /* unknown or unsupported protocol */ | |
156 | u_long ips_delivered; /* datagrams delivered to upper level*/ | |
157 | u_long ips_localout; /* total ip packets generated here */ | |
158 | u_long ips_odropped; /* lost packets due to nobufs, etc. */ | |
159 | u_long ips_reassembled; /* total packets reassembled ok */ | |
160 | u_long ips_fragmented; /* datagrams successfully fragmented */ | |
161 | u_long ips_ofragments; /* output fragments created */ | |
162 | u_long ips_cantfrag; /* don't fragment flag was set, etc. */ | |
163 | u_long ips_badoptions; /* error in option processing */ | |
164 | u_long ips_noroute; /* packets discarded due to no route */ | |
165 | u_long ips_badvers; /* ip version != 4 */ | |
166 | u_long ips_rawout; /* total raw ip packets generated */ | |
167 | u_long ips_toolong; /* ip length > max ip packet size */ | |
168 | u_long ips_notmember; /* multicasts for unregistered grps */ | |
169 | u_long ips_nogif; /* no match gif found */ | |
9bccf70c | 170 | u_long ips_badaddr; /* invalid address on header */ |
1c79356b A |
171 | }; |
172 | ||
9bccf70c A |
173 | struct ip_linklocal_stat { |
174 | u_long iplls_in_total; | |
175 | u_long iplls_in_badttl; | |
176 | u_long iplls_out_total; | |
177 | u_long iplls_out_badttl; | |
178 | }; | |
1c79356b | 179 | |
91447636 | 180 | #ifdef KERNEL_PRIVATE |
1c79356b A |
181 | /* flags passed to ip_output as last parameter */ |
182 | #define IP_FORWARDING 0x1 /* most of ip header exists */ | |
183 | #define IP_RAWOUTPUT 0x2 /* raw ip header exists */ | |
55e303ae A |
184 | #define IP_NOIPSEC 0x4 /* No IPSec processing */ |
185 | #define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables (0x0010) */ | |
186 | #define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets (0x0020) */ | |
1c79356b A |
187 | |
188 | struct ip; | |
189 | struct inpcb; | |
190 | struct route; | |
191 | struct sockopt; | |
192 | ||
193 | extern struct ipstat ipstat; | |
9bccf70c | 194 | #if !defined(RANDOM_IP_ID) || RANDOM_IP_ID == 0 |
1c79356b | 195 | extern u_short ip_id; /* ip packet ctr, for ids */ |
9bccf70c | 196 | #endif |
1c79356b A |
197 | extern int ip_defttl; /* default IP ttl */ |
198 | extern int ipforwarding; /* ip forwarding */ | |
199 | extern struct protosw *ip_protox[]; | |
200 | extern struct socket *ip_rsvpd; /* reservation protocol daemon */ | |
201 | extern struct socket *ip_mrouter; /* multicast routing daemon */ | |
91447636 A |
202 | extern int (*legal_vif_num)(int); |
203 | extern u_long (*ip_mcast_src)(int); | |
1c79356b A |
204 | extern int rsvp_on; |
205 | extern struct pr_usrreqs rip_usrreqs; | |
206 | ||
91447636 A |
207 | int ip_ctloutput(struct socket *, struct sockopt *sopt); |
208 | void ip_drain(void); | |
209 | void ip_freemoptions(struct ip_moptions *); | |
210 | void ip_init(void); | |
211 | extern int (*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *, | |
212 | struct ip_moptions *); | |
213 | int ip_output(struct mbuf *, | |
214 | struct mbuf *, struct route *, int, struct ip_moptions *); | |
215 | int ip_output_list(struct mbuf *, int, | |
216 | struct mbuf *, struct route *, int, struct ip_moptions *); | |
217 | struct in_ifaddr * | |
218 | ip_rtaddr(struct in_addr, struct route *); | |
219 | void ip_savecontrol(struct inpcb *, struct mbuf **, struct ip *, | |
220 | struct mbuf *); | |
221 | void ip_slowtimo(void); | |
1c79356b | 222 | struct mbuf * |
91447636 A |
223 | ip_srcroute(void); |
224 | void ip_stripoptions(struct mbuf *, struct mbuf *); | |
9bccf70c A |
225 | #if RANDOM_IP_ID |
226 | u_int16_t | |
91447636 | 227 | ip_randomid(void); |
9bccf70c | 228 | #endif |
91447636 A |
229 | int rip_ctloutput(struct socket *, struct sockopt *); |
230 | void rip_ctlinput(int, struct sockaddr *, void *); | |
231 | void rip_init(void); | |
232 | void rip_input(struct mbuf *, int); | |
233 | int rip_output(struct mbuf *, struct socket *, u_long); | |
234 | int rip_unlock(struct socket *, int, int); | |
235 | void ipip_input(struct mbuf *, int); | |
236 | void rsvp_input(struct mbuf *, int); | |
237 | int ip_rsvp_init(struct socket *); | |
238 | int ip_rsvp_done(void); | |
239 | int ip_rsvp_vif_init(struct socket *, struct sockopt *); | |
240 | int ip_rsvp_vif_done(struct socket *, struct sockopt *); | |
241 | void ip_rsvp_force_done(struct socket *); | |
1c79356b | 242 | |
9bccf70c A |
243 | void in_delayed_cksum(struct mbuf *m); |
244 | ||
89b3af67 A |
245 | #endif /* KERNEL_PRIVATE */ |
246 | #endif /* !_NETINET_IP_VAR_H_ */ |