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
|
/* $OpenBSD: in_var.h,v 1.33 2014/01/21 10:18:26 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>
#ifdef _KERNEL
/*
* 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 */
struct in_multi *ia_allhosts; /* multicast address record for
the allhosts multicast group */
};
#endif
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;
};
#ifdef _KERNEL
TAILQ_HEAD(in_ifaddrhead, in_ifaddr);
extern struct in_ifaddrhead in_ifaddr;
/*
* 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 { \
struct ifaddr *ifa; \
TAILQ_FOREACH(ifa, &(ifp)->if_addrlist, ifa_list) { \
if (ifa->ifa_addr->sa_family == AF_INET) \
break; \
} \
(ia) = ifatoia(ifa); \
} 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;
};
#ifdef _KERNEL
/*
* Internet multicast address structure. There is one of these for each IP
* multicast group to which this host belongs on a given network interface.
*/
struct in_multi {
struct ifmaddr inm_ifma; /* Protocol-independent info */
#define inm_refcnt inm_ifma.ifma_refcnt
#define inm_ifidx inm_ifma.ifma_ifidx
struct sockaddr_in inm_sin; /* IPv4 multicast address */
#define inm_addr inm_sin.sin_addr
u_int inm_state; /* state of membership */
u_int inm_timer; /* IGMP membership report timer */
struct router_info *inm_rti; /* router version info */
};
static __inline struct in_multi *
ifmatoinm(struct ifmaddr *ifma)
{
return ((struct in_multi *)(ifma));
}
/*
* 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 ifmaddr *ifma; \
\
(inm) = NULL; \
TAILQ_FOREACH(ifma, &(ifp)->if_maddrlist, ifma_list) \
if (ifma->ifma_addr->sa_family == AF_INET && \
ifmatoinm(ifma)->inm_addr.s_addr == (addr).s_addr) {\
(inm) = ifmatoinm(ifma); \
break; \
} \
} 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 *);
#endif
#endif /* _NETINET_IN_VAR_H_ */
|
