reactos/drivers/lib/oskittcp/include/freebsd/src/sys/netinet/in_var.h

   1 /*
   2  * Copyright (c) 1985, 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  *      @(#)in_var.h    8.1 (Berkeley) 6/10/93
  34  */
  35
  36 #ifndef _NETINET_IN_VAR_H_
  37 #define _NETINET_IN_VAR_H_
  38
  39 #include <sys/queue.h>
  40 /*
  41  * Interface address, Internet version.  One of these structures
  42  * is allocated for each interface with an Internet address.
  43  * The ifaddr structure contains the protocol-independent part
  44  * of the structure and is assumed to be first.
  45  */
  46 struct in_ifaddr {
  47         struct  ifaddr ia_ifa;          /* protocol-independent info */
  48 #define ia_ifp          ia_ifa.ifa_ifp
  49 #define ia_flags        ia_ifa.ifa_flags
  50                                         /* ia_{,sub}net{,mask} in host order */
  51         u_long  ia_net;                 /* network number of interface */
  52         u_long  ia_netmask;             /* mask of net part */
  53         u_long  ia_subnet;              /* subnet number, including net */
  54         u_long  ia_subnetmask;          /* mask of subnet part */
  55         struct  in_addr ia_netbroadcast; /* to recognize net broadcasts */
  56         struct  in_ifaddr *ia_next;     /* next in list of internet addresses */
  57         struct  sockaddr_in ia_addr;    /* reserve space for interface name */
  58         struct  sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
  59 #define ia_broadaddr    ia_dstaddr
  60         struct  sockaddr_in ia_sockmask; /* reserve space for general netmask */
  61         LIST_HEAD(in_multihead, in_multi) ia_multiaddrs;
  62                                         /* list of multicast addresses */
  63 };
  64
  65 struct  in_aliasreq {
  66         char    ifra_name[IFNAMSIZ];            /* if name, e.g. "en0" */
  67         struct  sockaddr_in ifra_addr;
  68         struct  sockaddr_in ifra_broadaddr;
  69 #define ifra_dstaddr ifra_broadaddr
  70         struct  sockaddr_in ifra_mask;
  71 };
  72 /*
  73  * Given a pointer to an in_ifaddr (ifaddr),
  74  * return a pointer to the addr as a sockaddr_in.
  75  */
  76 #define IA_SIN(ia)    (&(((struct in_ifaddr *)(ia))->ia_addr))
  77 #define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr))
  78
  79 #define IN_LNAOF(in, ifa) \
  80         ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))
  81
  82
  83 #ifdef  KERNEL
  84 extern  struct  in_ifaddr *in_ifaddr;
  85 extern  struct  ifqueue ipintrq;                /* ip packet input queue */
  86 extern  struct  in_addr zeroin_addr;
  87 extern  u_char  inetctlerrmap[];
  88 extern  int rtq_reallyold;      /* XXX */
  89 extern  int rtq_minreallyold;   /* XXX */
  90 extern  int rtq_toomany;        /* XXX */
  91
  92 /*
  93  * Macro for finding the interface (ifnet structure) corresponding to one
  94  * of our IP addresses.
  95  */
  96 #define INADDR_TO_IFP(addr, ifp) \
  97         /* struct in_addr addr; */ \
  98         /* struct ifnet *ifp; */ \
  99 { \
 100         register struct in_ifaddr *ia; \
 101 \
 102         for (ia = in_ifaddr; \
 103             ia != NULL && ((ia->ia_ifp->if_flags & IFF_POINTOPOINT)? \
 104                 IA_DSTSIN(ia):IA_SIN(ia))->sin_addr.s_addr != (addr).s_addr; \
 105             ia = ia->ia_next) \
 106                  continue; \
 107         if (ia == NULL) \
 108             for (ia = in_ifaddr; \
 109                 ia != NULL; \
 110                 ia = ia->ia_next) \
 111                     if (ia->ia_ifp->if_flags & IFF_POINTOPOINT && \
 112                         IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \
 113                             break; \
 114         (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
 115 }
 116
 117 /*
 118  * Macro for finding the internet address structure (in_ifaddr) corresponding
 119  * to a given interface (ifnet structure).
 120  */
 121 #define IFP_TO_IA(ifp, ia) \
 122         /* struct ifnet *ifp; */ \
 123         /* struct in_ifaddr *ia; */ \
 124 { \
 125         for ((ia) = in_ifaddr; \
 126             (ia) != NULL && (ia)->ia_ifp != (ifp); \
 127             (ia) = (ia)->ia_next) \
 128                 continue; \
 129 }
 130 #endif
 131
 132 /*
 133  * This information should be part of the ifnet structure but we don't wish
 134  * to change that - as it might break a number of things
 135  */
 136
 137 struct router_info {
 138         struct ifnet *ifp;
 139         int    type; /* type of router which is querier on this interface */
 140         int    time; /* # of slow timeouts since last old query */
 141         struct router_info *next;
 142 };
 143
 144 /*
 145  * Internet multicast address structure.  There is one of these for each IP
 146  * multicast group to which this host belongs on a given network interface.
 147  * They are kept in a linked list, rooted in the interface's in_ifaddr
 148  * structure.
 149  */
 150 struct in_multi {
 151         LIST_ENTRY(in_multi) inm_entry; /* list glue */
 152         struct  in_addr inm_addr;       /* IP multicast address */
 153         struct  ifnet *inm_ifp;         /* back pointer to ifnet */
 154         struct  in_ifaddr *inm_ia;      /* back pointer to in_ifaddr */
 155         u_int   inm_refcount;           /* no. membership claims by sockets */
 156         u_int   inm_timer;              /* IGMP membership report timer */
 157         u_int   inm_state;              /*  state of the membership */
 158         struct  router_info *inm_rti;   /* router info*/
 159 };
 160
 161 #ifdef KERNEL
 162 /*
 163  * Structure used by macros below to remember position when stepping through
 164  * all of the in_multi records.
 165  */
 166 struct in_multistep {
 167         struct in_ifaddr *i_ia;
 168         struct in_multi *i_inm;
 169 };
 170
 171 /*
 172  * Macro for looking up the in_multi record for a given IP multicast address
 173  * on a given interface.  If no matching record is found, "inm" returns NULL.
 174  */
 175 #define IN_LOOKUP_MULTI(addr, ifp, inm) \
 176         /* struct in_addr addr; */ \
 177         /* struct ifnet *ifp; */ \
 178         /* struct in_multi *inm; */ \
 179 { \
 180         register struct in_ifaddr *ia; \
 181 \
 182         IFP_TO_IA((ifp), ia); \
 183         if (ia == NULL) \
 184                 (inm) = NULL; \
 185         else \
 186                 for ((inm) = ia->ia_multiaddrs.lh_first; \
 187                     (inm) != NULL && (inm)->inm_addr.s_addr != (addr).s_addr; \
 188                      (inm) = inm->inm_entry.le_next) \
 189                          continue; \
 190 }
 191
 192 /*
 193  * Macro to step through all of the in_multi records, one at a time.
 194  * The current position is remembered in "step", which the caller must
 195  * provide.  IN_FIRST_MULTI(), below, must be called to initialize "step"
 196  * and get the first record.  Both macros return a NULL "inm" when there
 197  * are no remaining records.
 198  */
 199 #define IN_NEXT_MULTI(step, inm) \
 200         /* struct in_multistep  step; */ \
 201         /* struct in_multi *inm; */ \
 202 { \
 203         if (((inm) = (step).i_inm) != NULL) \
 204                 (step).i_inm = (inm)->inm_entry.le_next; \
 205         else \
 206                 while ((step).i_ia != NULL) { \
 207                         (inm) = (step).i_ia->ia_multiaddrs.lh_first; \
 208                         (step).i_ia = (step).i_ia->ia_next; \
 209                         if ((inm) != NULL) { \
 210                                 (step).i_inm = (inm)->inm_entry.le_next; \
 211                                 break; \
 212                         } \
 213                 } \
 214 }
 215
 216 #define IN_FIRST_MULTI(step, inm) \
 217         /* struct in_multistep step; */ \
 218         /* struct in_multi *inm; */ \
 219 { \
 220         (step).i_ia = in_ifaddr; \
 221         (step).i_inm = NULL; \
 222         IN_NEXT_MULTI((step), (inm)); \
 223 }
 224
 225 int     in_ifinit __P((struct ifnet *,
 226             struct in_ifaddr *, struct sockaddr_in *, int));
 227 struct  in_multi *in_addmulti __P((struct in_addr *, struct ifnet *));
 228 void    in_delmulti __P((struct in_multi *));
 229 void    in_ifscrub __P((struct ifnet *, struct in_ifaddr *));
 230 int     in_control __P((struct socket *, int, caddr_t, struct ifnet *));
 231
 232 #endif
 233 #endif