1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/* $OpenBSD: in_var.h,v 1.20 2013/05/31 19:16:52 mpi Exp $ */
/* $NetBSD: in_var.h,v 1.16 1996/02/13 23:42:15 christos Exp $ */
/*
* Copyright (c) 1985, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)in_var.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _NETINET_IN_VAR_H_
#define _NETINET_IN_VAR_H_
#include <sys/queue.h>
/*
* Interface address, Internet version. One of these structures
* is allocated for each interface with an Internet address.
* The ifaddr structure contains the protocol-independent part
* of the structure and is assumed to be first.
*/
struct in_ifaddr {
struct ifaddr ia_ifa; /* protocol-independent info */
#define ia_ifp ia_ifa.ifa_ifp
#define ia_flags ia_ifa.ifa_flags
/* ia_net{,mask} in host order */
u_int32_t ia_net; /* network number of interface */
u_int32_t ia_netmask; /* mask of net part */
TAILQ_ENTRY(in_ifaddr) ia_list; /* list of internet addresses */
struct sockaddr_in ia_addr; /* reserve space for interface name */
struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
#define ia_broadaddr ia_dstaddr
struct sockaddr_in ia_sockmask; /* reserve space for general netmask */
LIST_HEAD(, in_multi) ia_multiaddrs; /* list of multicast addresses */
struct in_multi *ia_allhosts; /* multicast address record for
the allhosts multicast group */
};
struct in_aliasreq {
char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
union {
struct sockaddr_in ifrau_addr;
int ifrau_align;
} ifra_ifrau;
#ifndef ifra_addr
#define ifra_addr ifra_ifrau.ifrau_addr
#endif
struct sockaddr_in ifra_dstaddr;
#define ifra_broadaddr ifra_dstaddr
struct sockaddr_in ifra_mask;
};
/*
* Given a pointer to an in_ifaddr (ifaddr),
* return a pointer to the addr as a sockaddr_in.
*/
#define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr))
#ifdef _KERNEL
TAILQ_HEAD(in_ifaddrhead, in_ifaddr);
extern struct in_ifaddrhead in_ifaddr;
extern struct ifqueue ipintrq; /* ip packet input queue */
extern int inetctlerrmap[];
void in_socktrim(struct sockaddr_in *);
/*
* Macro for finding the interface (ifnet structure) corresponding to one
* of our IP addresses.
*/
#define INADDR_TO_IFP(addr, ifp, rdomain) \
/* struct in_addr addr; */ \
/* struct ifnet *ifp; */ \
do { \
struct in_ifaddr *ia; \
\
for (ia = TAILQ_FIRST(&in_ifaddr); ia != NULL && \
(ia->ia_ifp->if_rdomain != rtable_l2(rdomain) || \
ia->ia_addr.sin_addr.s_addr != (addr).s_addr); \
ia = TAILQ_NEXT(ia, ia_list)) \
continue; \
(ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
} while (/* CONSTCOND */ 0)
/*
* Macro for finding the internet address structure (in_ifaddr) corresponding
* to a given interface (ifnet structure).
*/
#define IFP_TO_IA(ifp, ia) \
/* struct ifnet *ifp; */ \
/* struct in_ifaddr *ia; */ \
do { \
for ((ia) = TAILQ_FIRST(&in_ifaddr); \
(ia) != NULL && (ia)->ia_ifp != (ifp); \
(ia) = TAILQ_NEXT((ia), ia_list)) \
continue; \
} while (/* CONSTCOND */ 0)
#endif
/*
* Per-interface router version information.
*/
struct router_info {
struct ifnet *rti_ifp;
int rti_type; /* type of router on this interface */
int rti_age; /* time since last v1 query */
struct router_info *rti_next;
};
/*
* Internet multicast address structure. There is one of these for each IP
* multicast group to which this host belongs on a given network interface.
* They are kept in a linked list, rooted in the interface's in_ifaddr
* structure.
*/
struct in_multi {
struct in_addr inm_addr; /* IP multicast address */
struct in_ifaddr *inm_ia; /* back pointer to in_ifaddr */
u_int inm_refcount; /* no. membership claims by sockets */
u_int inm_timer; /* IGMP membership report timer */
LIST_ENTRY(in_multi) inm_list; /* list of multicast addresses */
u_int inm_state; /* state of membership */
struct router_info *inm_rti; /* router version info */
};
#ifdef _KERNEL
/*
* Structure used by macros below to remember position when stepping through
* all of the in_multi records.
*/
struct in_multistep {
struct in_ifaddr *i_ia;
struct in_multi *i_inm;
};
/*
* Macro for looking up the in_multi record for a given IP multicast address
* on a given interface. If no matching record is found, "inm" returns NULL.
*/
#define IN_LOOKUP_MULTI(addr, ifp, inm) \
/* struct in_addr addr; */ \
/* struct ifnet *ifp; */ \
/* struct in_multi *inm; */ \
do { \
struct in_ifaddr *ia; \
\
IFP_TO_IA((ifp), ia); \
if (ia == NULL) \
(inm) = NULL; \
else \
for ((inm) = LIST_FIRST(&ia->ia_multiaddrs); \
(inm) != NULL && \
(inm)->inm_addr.s_addr != (addr).s_addr; \
(inm) = LIST_NEXT(inm, inm_list)) \
continue; \
} while (/* CONSTCOND */ 0)
/*
* Macro to step through all of the in_multi records, one at a time.
* The current position is remembered in "step", which the caller must
* provide. IN_FIRST_MULTI(), below, must be called to initialize "step"
* and get the first record. Both macros return a NULL "inm" when there
* are no remaining records.
*/
#define IN_NEXT_MULTI(step, inm) \
/* struct in_multistep step; */ \
/* struct in_multi *inm; */ \
do { \
if (((inm) = (step).i_inm) != NULL) \
(step).i_inm = LIST_NEXT((inm), inm_list); \
else \
while ((step).i_ia != NULL) { \
(inm) = LIST_FIRST(&(step).i_ia->ia_multiaddrs); \
(step).i_ia = TAILQ_NEXT((step).i_ia, ia_list); \
if ((inm) != NULL) { \
(step).i_inm = LIST_NEXT((inm), inm_list); \
break; \
} \
} \
} while (/* CONSTCOND */ 0)
#define IN_FIRST_MULTI(step, inm) \
/* struct in_multistep step; */ \
/* struct in_multi *inm; */ \
do { \
(step).i_ia = TAILQ_FIRST(&in_ifaddr); \
(step).i_inm = NULL; \
IN_NEXT_MULTI((step), (inm)); \
} while (/* CONSTCOND */ 0)
int in_ifinit(struct ifnet *,
struct in_ifaddr *, struct sockaddr_in *, int);
struct in_multi *in_addmulti(struct in_addr *, struct ifnet *);
void in_delmulti(struct in_multi *);
void in_ifscrub(struct ifnet *, struct in_ifaddr *);
int in_control(struct socket *, u_long, caddr_t, struct ifnet *);
int inet_nat64(int, const void *, void *, const void *, u_int8_t);
int inet_nat46(int, const void *, void *, const void *, u_int8_t);
int in_mask2len(struct in_addr *);
#endif
/* INET6 stuff */
#include <netinet6/in6_var.h>
#endif /* _NETINET_IN_VAR_H_ */
|
