BSD 4_4 release

[unix-history] / usr / src / sys / netinet / in_var.h

diff --git a/usr/src/sys/netinet/in_var.h b/usr/src/sys/netinet/in_var.h
index e5c50b9..8218f0b 100644 (file)
--- a/usr/src/sys/netinet/in_var.h
+++ b/usr/src/sys/netinet/in_var.h
@@ -1,9 +1,36 @@
 /*
 /*

- * Copyright (c) 1985, 1986 Regents of the University of California.
- * All rights reserved.  The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
+ * Copyright (c) 1985, 1986, 1993
+ *     The Regents of the University of California.  All rights reserved.

  *
  *

- *     @(#)in_var.h    7.1 (Berkeley) %G%
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. 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

  */
 
 /*
  */
 
 /*


@@ -14,30 +41,160 @@
  */
 struct in_ifaddr {
        struct  ifaddr ia_ifa;          /* protocol-independent info */
  */
 struct in_ifaddr {
        struct  ifaddr ia_ifa;          /* protocol-independent info */

-#define        ia_addr ia_ifa.ifa_addr
-#define        ia_broadaddr    ia_ifa.ifa_broadaddr
-#define        ia_dstaddr      ia_ifa.ifa_dstaddr

 #define        ia_ifp          ia_ifa.ifa_ifp
 #define        ia_ifp          ia_ifa.ifa_ifp

+#define ia_flags       ia_ifa.ifa_flags
+                                       /* ia_{,sub}net{,mask} in host order */

        u_long  ia_net;                 /* network number of interface */
        u_long  ia_netmask;             /* mask of net part */
        u_long  ia_subnet;              /* subnet number, including net */
        u_long  ia_net;                 /* network number of interface */
        u_long  ia_netmask;             /* mask of net part */
        u_long  ia_subnet;              /* subnet number, including net */

-       u_long  ia_subnetmask;          /* mask of net + subnet */
-       struct  in_addr ia_netbroadcast; /* broadcast addr for (logical) net */
-       int     ia_flags;
+       u_long  ia_subnetmask;          /* mask of subnet part */
+       struct  in_addr ia_netbroadcast; /* to recognize net broadcasts */

        struct  in_ifaddr *ia_next;     /* next in list of internet addresses */
        struct  in_ifaddr *ia_next;     /* next in 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_multiaddrs; /* list of multicast addresses */
+};
+
+struct in_aliasreq {
+       char    ifra_name[IFNAMSIZ];            /* if name, e.g. "en0" */
+       struct  sockaddr_in ifra_addr;
+       struct  sockaddr_in ifra_broadaddr;
+#define ifra_dstaddr ifra_broadaddr
+       struct  sockaddr_in ifra_mask;

 };
 /*
  * Given a pointer to an in_ifaddr (ifaddr),
 };
 /*
  * Given a pointer to an in_ifaddr (ifaddr),

- * return a pointer to the addr as a sockadd_in.
+ * return a pointer to the addr as a sockaddr_in.

  */
  */

-#define        IA_SIN(ia) ((struct sockaddr_in *)(&((struct in_ifaddr *)ia)->ia_addr))
+#define        IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr))
+
+#define IN_LNAOF(in, ifa) \
+       ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))
+                       
+
+#ifdef KERNEL
+extern struct  in_ifaddr *in_ifaddr;
+extern struct  ifqueue ipintrq;                /* ip packet input queue */
+void   in_socktrim __P((struct sockaddr_in *));
+
+

 /*
 /*

- * ia_flags
+ * Macro for finding the interface (ifnet structure) corresponding to one
+ * of our IP addresses.

  */
  */

-#define        IFA_ROUTE       0x01            /* routing entry installed */
+#define INADDR_TO_IFP(addr, ifp) \
+       /* struct in_addr addr; */ \
+       /* struct ifnet *ifp; */ \
+{ \
+       register struct in_ifaddr *ia; \
+\
+       for (ia = in_ifaddr; \
+           ia != NULL && IA_SIN(ia)->sin_addr.s_addr != (addr).s_addr; \
+           ia = ia->ia_next) \
+                continue; \
+       (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
+}

 
 

-#ifdef KERNEL
-struct in_ifaddr *in_ifaddr;
-struct in_ifaddr *in_iaonnetof();
-struct ifqueue ipintrq;                /* ip packet input queue */
+/*
+ * 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; */ \
+{ \
+       for ((ia) = in_ifaddr; \
+           (ia) != NULL && (ia)->ia_ifp != (ifp); \
+           (ia) = (ia)->ia_next) \
+               continue; \
+}
+#endif
+
+/*
+ * 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  ifnet *inm_ifp;         /* back pointer to ifnet */
+       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 */
+       struct  in_multi *inm_next;     /* ptr to next multicast address */
+};
+
+#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; */ \
+{ \
+       register struct in_ifaddr *ia; \
+\
+       IFP_TO_IA((ifp), ia); \
+       if (ia == NULL) \
+               (inm) = NULL; \
+       else \
+               for ((inm) = ia->ia_multiaddrs; \
+                   (inm) != NULL && (inm)->inm_addr.s_addr != (addr).s_addr; \
+                    (inm) = inm->inm_next) \
+                        continue; \
+}
+
+/*
+ * 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; */ \
+{ \
+       if (((inm) = (step).i_inm) != NULL) \
+               (step).i_inm = (inm)->inm_next; \
+       else \
+               while ((step).i_ia != NULL) { \
+                       (inm) = (step).i_ia->ia_multiaddrs; \
+                       (step).i_ia = (step).i_ia->ia_next; \
+                       if ((inm) != NULL) { \
+                               (step).i_inm = (inm)->inm_next; \
+                               break; \
+                       } \
+               } \
+}
+
+#define IN_FIRST_MULTI(step, inm) \
+       /* struct in_multistep step; */ \
+       /* struct in_multi *inm; */ \
+{ \
+       (step).i_ia = in_ifaddr; \
+       (step).i_inm = NULL; \
+       IN_NEXT_MULTI((step), (inm)); \
+}
+
+int    in_ifinit __P((struct ifnet *,
+           struct in_ifaddr *, struct sockaddr_in *, int));
+struct in_multi *in_addmulti __P((struct in_addr *, struct ifnet *));
+int    in_delmulti __P((struct in_multi *));
+void   in_ifscrub __P((struct ifnet *, struct in_ifaddr *));
+int    in_control __P((struct socket *, int, caddr_t, struct ifnet *));

 #endif
 #endif