source: rtems/cpukit/libnetworking/netinet/in_var.h @ 8fc471a5

4.104.114.84.9
Last change on this file since 8fc471a5 was 8fc471a5, checked in by Ralf Corsepius <ralf.corsepius@…>, on May 10, 2007 at 5:07:28 AM

Include <rtems/bsd/sys/queue.h> instead of <sys/queue.h>.

  • Property mode set to 100644
File size: 7.7 KB
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1/* $Id */
2/*
3 * Copyright (c) 1985, 1986, 1993
4 *      The Regents of the University of California.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 4. Neither the name of the University nor the names of its contributors
15 *    may be used to endorse or promote products derived from this software
16 *    without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 *      @(#)in_var.h    8.2 (Berkeley) 1/9/95
31 * $FreeBSD: src/sys/netinet/in_var.h,v 1.52 2004/10/19 21:06:14 andre Exp $
32 */
33
34#ifndef _NETINET_IN_VAR_H_
35#define _NETINET_IN_VAR_H_
36
37#include <rtems/bsd/sys/queue.h>
38#if !defined(__rtems__)
39#include <sys/fnv_hash.h>
40#endif
41
42/*
43 * Interface address, Internet version.  One of these structures
44 * is allocated for each Internet address on an interface.
45 * The ifaddr structure contains the protocol-independent part
46 * of the structure and is assumed to be first.
47 */
48struct in_ifaddr {
49        struct  ifaddr ia_ifa;          /* protocol-independent info */
50#define ia_ifp          ia_ifa.ifa_ifp
51#define ia_flags        ia_ifa.ifa_flags
52                                        /* ia_{,sub}net{,mask} in host order */
53        u_long  ia_net;                 /* network number of interface */
54        u_long  ia_netmask;             /* mask of net part */
55        u_long  ia_subnet;              /* subnet number, including net */
56        u_long  ia_subnetmask;          /* mask of subnet part */
57        struct  in_addr ia_netbroadcast; /* to recognize net broadcasts */
58        struct  in_ifaddr *ia_next;     /* next in list of internet addresses */
59        struct  sockaddr_in ia_addr;    /* reserve space for interface name */
60        struct  sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
61#define ia_broadaddr    ia_dstaddr
62        struct  sockaddr_in ia_sockmask; /* reserve space for general netmask */
63        LIST_HEAD(in_multihead, in_multi) ia_multiaddrs;
64                                        /* list of multicast addresses */
65};
66
67struct  in_aliasreq {
68        char    ifra_name[IFNAMSIZ];            /* if name, e.g. "en0" */
69        struct  sockaddr_in ifra_addr;
70        struct  sockaddr_in ifra_broadaddr;
71#define ifra_dstaddr ifra_broadaddr
72        struct  sockaddr_in ifra_mask;
73};
74/*
75 * Given a pointer to an in_ifaddr (ifaddr),
76 * return a pointer to the addr as a sockaddr_in.
77 */
78#define IA_SIN(ia)    (&(((struct in_ifaddr *)(ia))->ia_addr))
79#define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr))
80
81#define IN_LNAOF(in, ifa) \
82        ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))
83
84
85#ifdef  _KERNEL
86extern  struct  in_ifaddr *in_ifaddr;
87extern  struct  ifqueue ipintrq;                /* ip packet input queue */
88extern  struct  in_addr zeroin_addr;
89extern  u_char  inetctlerrmap[];
90
91/*
92 * Macro for finding the interface (ifnet structure) corresponding to one
93 * of our IP addresses.
94 */
95#define INADDR_TO_IFP(addr, ifp) \
96        /* struct in_addr addr; */ \
97        /* struct ifnet *ifp; */ \
98{ \
99        register struct in_ifaddr *ia; \
100\
101        for (ia = in_ifaddr; \
102            ia != NULL && ((ia->ia_ifp->if_flags & IFF_POINTOPOINT)? \
103                IA_DSTSIN(ia):IA_SIN(ia))->sin_addr.s_addr != (addr).s_addr; \
104            ia = ia->ia_next) \
105                 continue; \
106        if (ia == NULL) \
107            for (ia = in_ifaddr; \
108                ia != NULL; \
109                ia = ia->ia_next) \
110                    if (ia->ia_ifp->if_flags & IFF_POINTOPOINT && \
111                        IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \
112                            break; \
113        (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
114}
115
116/*
117 * Macro for finding the internet address structure (in_ifaddr) corresponding
118 * to a given interface (ifnet structure).
119 */
120#define IFP_TO_IA(ifp, ia) \
121        /* struct ifnet *ifp; */ \
122        /* struct in_ifaddr *ia; */ \
123{ \
124        for ((ia) = in_ifaddr; \
125            (ia) != NULL && (ia)->ia_ifp != (ifp); \
126            (ia) = (ia)->ia_next) \
127                continue; \
128}
129#endif
130
131/*
132 * This information should be part of the ifnet structure but we don't wish
133 * to change that - as it might break a number of things
134 */
135
136struct router_info {
137        struct ifnet *rti_ifp;
138        int    rti_type; /* type of router which is querier on this interface */
139        int    rti_time; /* # of slow timeouts since last old query */
140        struct router_info *rti_next;
141};
142
143/*
144 * Internet multicast address structure.  There is one of these for each IP
145 * multicast group to which this host belongs on a given network interface.
146 * They are kept in a linked list, rooted in the interface's in_ifaddr
147 * structure.
148 */
149struct in_multi {
150        LIST_ENTRY(in_multi) inm_entry; /* list glue */
151        struct  in_addr inm_addr;       /* IP multicast address */
152        struct  ifnet *inm_ifp;         /* back pointer to ifnet */
153        struct  in_ifaddr *inm_ia;      /* back pointer to in_ifaddr */
154        u_int   inm_refcount;           /* no. membership claims by sockets */
155        u_int   inm_timer;              /* IGMP membership report timer */
156        u_int   inm_state;              /*  state of the membership */
157        struct  router_info *inm_rti;   /* router info*/
158};
159
160#ifdef _KERNEL
161
162#ifdef SYSCTL_DECL
163SYSCTL_DECL(_net_inet_ip);
164SYSCTL_DECL(_net_inet_raw);
165#endif
166
167/*
168 * Structure used by macros below to remember position when stepping through
169 * all of the in_multi records.
170 */
171struct in_multistep {
172        struct in_ifaddr *i_ia;
173        struct in_multi *i_inm;
174};
175
176/*
177 * Macro for looking up the in_multi record for a given IP multicast address
178 * on a given interface.  If no matching record is found, "inm" returns NULL.
179 */
180#define IN_LOOKUP_MULTI(addr, ifp, inm) \
181        /* struct in_addr addr; */ \
182        /* struct ifnet *ifp; */ \
183        /* struct in_multi *inm; */ \
184{ \
185        register struct in_ifaddr *ia; \
186\
187        IFP_TO_IA((ifp), ia); \
188        if (ia == NULL) \
189                (inm) = NULL; \
190        else \
191                for ((inm) = ia->ia_multiaddrs.lh_first; \
192                    (inm) != NULL && (inm)->inm_addr.s_addr != (addr).s_addr; \
193                     (inm) = inm->inm_entry.le_next) \
194                         continue; \
195}
196
197/*
198 * Macro to step through all of the in_multi records, one at a time.
199 * The current position is remembered in "step", which the caller must
200 * provide.  IN_FIRST_MULTI(), below, must be called to initialize "step"
201 * and get the first record.  Both macros return a NULL "inm" when there
202 * are no remaining records.
203 */
204#define IN_NEXT_MULTI(step, inm) \
205        /* struct in_multistep  step; */ \
206        /* struct in_multi *inm; */ \
207{ \
208        if (((inm) = (step).i_inm) != NULL) \
209                (step).i_inm = (inm)->inm_entry.le_next; \
210        else \
211                while ((step).i_ia != NULL) { \
212                        (inm) = (step).i_ia->ia_multiaddrs.lh_first; \
213                        (step).i_ia = (step).i_ia->ia_next; \
214                        if ((inm) != NULL) { \
215                                (step).i_inm = (inm)->inm_entry.le_next; \
216                                break; \
217                        } \
218                } \
219}
220
221#define IN_FIRST_MULTI(step, inm) \
222        /* struct in_multistep step; */ \
223        /* struct in_multi *inm; */ \
224{ \
225        (step).i_ia = in_ifaddr; \
226        (step).i_inm = NULL; \
227        IN_NEXT_MULTI((step), (inm)); \
228}
229
230struct  in_multi *in_addmulti(struct in_addr *, struct ifnet *);
231void    in_delmulti(struct in_multi *);
232int     in_control(struct socket *, u_long, caddr_t, struct ifnet *);
233void    in_rtqdrain(void);
234void    ip_input(struct mbuf *);
235
236#endif /* _KERNEL */
237
238#endif /* _NETINET_IN_VAR_H_ */
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