1df8bae1dSRodney W. Grimes /* 2df8bae1dSRodney W. Grimes * Copyright (c) 1985, 1986, 1993 3df8bae1dSRodney W. Grimes * The Regents of the University of California. All rights reserved. 4df8bae1dSRodney W. Grimes * 5df8bae1dSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 6df8bae1dSRodney W. Grimes * modification, are permitted provided that the following conditions 7df8bae1dSRodney W. Grimes * are met: 8df8bae1dSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 9df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 10df8bae1dSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 11df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 12df8bae1dSRodney W. Grimes * documentation and/or other materials provided with the distribution. 13df8bae1dSRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 14df8bae1dSRodney W. Grimes * must display the following acknowledgement: 15df8bae1dSRodney W. Grimes * This product includes software developed by the University of 16df8bae1dSRodney W. Grimes * California, Berkeley and its contributors. 17df8bae1dSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 18df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software 19df8bae1dSRodney W. Grimes * without specific prior written permission. 20df8bae1dSRodney W. Grimes * 21df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31df8bae1dSRodney W. Grimes * SUCH DAMAGE. 32df8bae1dSRodney W. Grimes * 33df8bae1dSRodney W. Grimes * @(#)in_var.h 8.1 (Berkeley) 6/10/93 34ffa5b11aSGarrett Wollman * $Id: in_var.h,v 1.8 1995/03/16 18:14:53 bde Exp $ 35df8bae1dSRodney W. Grimes */ 36df8bae1dSRodney W. Grimes 37707f139eSPaul Richards #ifndef _NETINET_IN_VAR_H_ 38707f139eSPaul Richards #define _NETINET_IN_VAR_H_ 39707f139eSPaul Richards 40ffa5b11aSGarrett Wollman #include <sys/queue.h> 41ffa5b11aSGarrett Wollman 42df8bae1dSRodney W. Grimes /* 43df8bae1dSRodney W. Grimes * Interface address, Internet version. One of these structures 44df8bae1dSRodney W. Grimes * is allocated for each interface with an Internet address. 45df8bae1dSRodney W. Grimes * The ifaddr structure contains the protocol-independent part 46df8bae1dSRodney W. Grimes * of the structure and is assumed to be first. 47df8bae1dSRodney W. Grimes */ 48df8bae1dSRodney W. Grimes struct in_ifaddr { 49df8bae1dSRodney W. Grimes struct ifaddr ia_ifa; /* protocol-independent info */ 50df8bae1dSRodney W. Grimes #define ia_ifp ia_ifa.ifa_ifp 51df8bae1dSRodney W. Grimes #define ia_flags ia_ifa.ifa_flags 52df8bae1dSRodney W. Grimes /* ia_{,sub}net{,mask} in host order */ 53df8bae1dSRodney W. Grimes u_long ia_net; /* network number of interface */ 54df8bae1dSRodney W. Grimes u_long ia_netmask; /* mask of net part */ 55df8bae1dSRodney W. Grimes u_long ia_subnet; /* subnet number, including net */ 56df8bae1dSRodney W. Grimes u_long ia_subnetmask; /* mask of subnet part */ 57df8bae1dSRodney W. Grimes struct in_addr ia_netbroadcast; /* to recognize net broadcasts */ 58df8bae1dSRodney W. Grimes struct in_ifaddr *ia_next; /* next in list of internet addresses */ 59df8bae1dSRodney W. Grimes struct sockaddr_in ia_addr; /* reserve space for interface name */ 60df8bae1dSRodney W. Grimes struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */ 61df8bae1dSRodney W. Grimes #define ia_broadaddr ia_dstaddr 62df8bae1dSRodney W. Grimes struct sockaddr_in ia_sockmask; /* reserve space for general netmask */ 63ffa5b11aSGarrett Wollman LIST_HEAD(in_multihead, in_multi) ia_multiaddrs; 64ffa5b11aSGarrett Wollman /* list of multicast addresses */ 65df8bae1dSRodney W. Grimes }; 66df8bae1dSRodney W. Grimes 67df8bae1dSRodney W. Grimes struct in_aliasreq { 68df8bae1dSRodney W. Grimes char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 69df8bae1dSRodney W. Grimes struct sockaddr_in ifra_addr; 70df8bae1dSRodney W. Grimes struct sockaddr_in ifra_broadaddr; 71df8bae1dSRodney W. Grimes #define ifra_dstaddr ifra_broadaddr 72df8bae1dSRodney W. Grimes struct sockaddr_in ifra_mask; 73df8bae1dSRodney W. Grimes }; 74df8bae1dSRodney W. Grimes /* 75df8bae1dSRodney W. Grimes * Given a pointer to an in_ifaddr (ifaddr), 76df8bae1dSRodney W. Grimes * return a pointer to the addr as a sockaddr_in. 77df8bae1dSRodney W. Grimes */ 78df8bae1dSRodney W. Grimes #define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr)) 791bc8a809SSteven Wallace #define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr)) 80df8bae1dSRodney W. Grimes 81df8bae1dSRodney W. Grimes #define IN_LNAOF(in, ifa) \ 82df8bae1dSRodney W. Grimes ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask)) 83df8bae1dSRodney W. Grimes 84df8bae1dSRodney W. Grimes 85df8bae1dSRodney W. Grimes #ifdef KERNEL 86df8bae1dSRodney W. Grimes extern struct in_ifaddr *in_ifaddr; 87df8bae1dSRodney W. Grimes extern struct ifqueue ipintrq; /* ip packet input queue */ 88b5e8ce9fSBruce Evans extern struct in_addr zeroin_addr; 89b5e8ce9fSBruce Evans extern u_char inetctlerrmap[]; 90b5e8ce9fSBruce Evans extern int rtq_reallyold; /* XXX */ 91b5e8ce9fSBruce Evans extern int rtq_minreallyold; /* XXX */ 92b5e8ce9fSBruce Evans extern int rtq_toomany; /* XXX */ 93df8bae1dSRodney W. Grimes 94df8bae1dSRodney W. Grimes /* 95df8bae1dSRodney W. Grimes * Macro for finding the interface (ifnet structure) corresponding to one 96df8bae1dSRodney W. Grimes * of our IP addresses. 97df8bae1dSRodney W. Grimes */ 98df8bae1dSRodney W. Grimes #define INADDR_TO_IFP(addr, ifp) \ 99df8bae1dSRodney W. Grimes /* struct in_addr addr; */ \ 100df8bae1dSRodney W. Grimes /* struct ifnet *ifp; */ \ 101df8bae1dSRodney W. Grimes { \ 102df8bae1dSRodney W. Grimes register struct in_ifaddr *ia; \ 103df8bae1dSRodney W. Grimes \ 104df8bae1dSRodney W. Grimes for (ia = in_ifaddr; \ 1051bc8a809SSteven Wallace ia != NULL && ((ia->ia_ifp->if_flags & IFF_POINTOPOINT)? \ 1061bc8a809SSteven Wallace IA_DSTSIN(ia):IA_SIN(ia))->sin_addr.s_addr != (addr).s_addr; \ 107df8bae1dSRodney W. Grimes ia = ia->ia_next) \ 108df8bae1dSRodney W. Grimes continue; \ 109df8bae1dSRodney W. Grimes (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \ 110df8bae1dSRodney W. Grimes } 111df8bae1dSRodney W. Grimes 112df8bae1dSRodney W. Grimes /* 113df8bae1dSRodney W. Grimes * Macro for finding the internet address structure (in_ifaddr) corresponding 114df8bae1dSRodney W. Grimes * to a given interface (ifnet structure). 115df8bae1dSRodney W. Grimes */ 116df8bae1dSRodney W. Grimes #define IFP_TO_IA(ifp, ia) \ 117df8bae1dSRodney W. Grimes /* struct ifnet *ifp; */ \ 118df8bae1dSRodney W. Grimes /* struct in_ifaddr *ia; */ \ 119df8bae1dSRodney W. Grimes { \ 120df8bae1dSRodney W. Grimes for ((ia) = in_ifaddr; \ 121df8bae1dSRodney W. Grimes (ia) != NULL && (ia)->ia_ifp != (ifp); \ 122df8bae1dSRodney W. Grimes (ia) = (ia)->ia_next) \ 123df8bae1dSRodney W. Grimes continue; \ 124df8bae1dSRodney W. Grimes } 125df8bae1dSRodney W. Grimes #endif 126df8bae1dSRodney W. Grimes 127df8bae1dSRodney W. Grimes /* 128f0068c4aSGarrett Wollman * This information should be part of the ifnet structure but we don't wish 129f0068c4aSGarrett Wollman * to change that - as it might break a number of things 130f0068c4aSGarrett Wollman */ 131f0068c4aSGarrett Wollman 132f0068c4aSGarrett Wollman struct router_info { 133f0068c4aSGarrett Wollman struct ifnet *ifp; 134f0068c4aSGarrett Wollman int type; /* type of router which is querier on this interface */ 135f0068c4aSGarrett Wollman int time; /* # of slow timeouts since last old query */ 136f0068c4aSGarrett Wollman struct router_info *next; 137f0068c4aSGarrett Wollman }; 138f0068c4aSGarrett Wollman 139f0068c4aSGarrett Wollman /* 140df8bae1dSRodney W. Grimes * Internet multicast address structure. There is one of these for each IP 141df8bae1dSRodney W. Grimes * multicast group to which this host belongs on a given network interface. 142df8bae1dSRodney W. Grimes * They are kept in a linked list, rooted in the interface's in_ifaddr 143df8bae1dSRodney W. Grimes * structure. 144df8bae1dSRodney W. Grimes */ 145df8bae1dSRodney W. Grimes struct in_multi { 146ffa5b11aSGarrett Wollman LIST_ENTRY(in_multi) inm_entry; /* list glue */ 147df8bae1dSRodney W. Grimes struct in_addr inm_addr; /* IP multicast address */ 148df8bae1dSRodney W. Grimes struct ifnet *inm_ifp; /* back pointer to ifnet */ 149df8bae1dSRodney W. Grimes struct in_ifaddr *inm_ia; /* back pointer to in_ifaddr */ 150df8bae1dSRodney W. Grimes u_int inm_refcount; /* no. membership claims by sockets */ 151df8bae1dSRodney W. Grimes u_int inm_timer; /* IGMP membership report timer */ 152f0068c4aSGarrett Wollman u_int inm_state; /* state of the membership */ 153f0068c4aSGarrett Wollman struct router_info *inm_rti; /* router info*/ 154df8bae1dSRodney W. Grimes }; 155df8bae1dSRodney W. Grimes 156df8bae1dSRodney W. Grimes #ifdef KERNEL 157df8bae1dSRodney W. Grimes /* 158df8bae1dSRodney W. Grimes * Structure used by macros below to remember position when stepping through 159df8bae1dSRodney W. Grimes * all of the in_multi records. 160df8bae1dSRodney W. Grimes */ 161df8bae1dSRodney W. Grimes struct in_multistep { 162df8bae1dSRodney W. Grimes struct in_ifaddr *i_ia; 163df8bae1dSRodney W. Grimes struct in_multi *i_inm; 164df8bae1dSRodney W. Grimes }; 165df8bae1dSRodney W. Grimes 166df8bae1dSRodney W. Grimes /* 167df8bae1dSRodney W. Grimes * Macro for looking up the in_multi record for a given IP multicast address 168df8bae1dSRodney W. Grimes * on a given interface. If no matching record is found, "inm" returns NULL. 169df8bae1dSRodney W. Grimes */ 170df8bae1dSRodney W. Grimes #define IN_LOOKUP_MULTI(addr, ifp, inm) \ 171df8bae1dSRodney W. Grimes /* struct in_addr addr; */ \ 172df8bae1dSRodney W. Grimes /* struct ifnet *ifp; */ \ 173df8bae1dSRodney W. Grimes /* struct in_multi *inm; */ \ 174df8bae1dSRodney W. Grimes { \ 175df8bae1dSRodney W. Grimes register struct in_ifaddr *ia; \ 176df8bae1dSRodney W. Grimes \ 177df8bae1dSRodney W. Grimes IFP_TO_IA((ifp), ia); \ 178df8bae1dSRodney W. Grimes if (ia == NULL) \ 179df8bae1dSRodney W. Grimes (inm) = NULL; \ 180df8bae1dSRodney W. Grimes else \ 181ffa5b11aSGarrett Wollman for ((inm) = ia->ia_multiaddrs.lh_first; \ 182df8bae1dSRodney W. Grimes (inm) != NULL && (inm)->inm_addr.s_addr != (addr).s_addr; \ 183ffa5b11aSGarrett Wollman (inm) = inm->inm_entry.le_next) \ 184df8bae1dSRodney W. Grimes continue; \ 185df8bae1dSRodney W. Grimes } 186df8bae1dSRodney W. Grimes 187df8bae1dSRodney W. Grimes /* 188df8bae1dSRodney W. Grimes * Macro to step through all of the in_multi records, one at a time. 189df8bae1dSRodney W. Grimes * The current position is remembered in "step", which the caller must 190df8bae1dSRodney W. Grimes * provide. IN_FIRST_MULTI(), below, must be called to initialize "step" 191df8bae1dSRodney W. Grimes * and get the first record. Both macros return a NULL "inm" when there 192df8bae1dSRodney W. Grimes * are no remaining records. 193df8bae1dSRodney W. Grimes */ 194df8bae1dSRodney W. Grimes #define IN_NEXT_MULTI(step, inm) \ 195df8bae1dSRodney W. Grimes /* struct in_multistep step; */ \ 196df8bae1dSRodney W. Grimes /* struct in_multi *inm; */ \ 197df8bae1dSRodney W. Grimes { \ 198df8bae1dSRodney W. Grimes if (((inm) = (step).i_inm) != NULL) \ 199ffa5b11aSGarrett Wollman (step).i_inm = (inm)->inm_entry.le_next; \ 200df8bae1dSRodney W. Grimes else \ 201df8bae1dSRodney W. Grimes while ((step).i_ia != NULL) { \ 202ffa5b11aSGarrett Wollman (inm) = (step).i_ia->ia_multiaddrs.lh_first; \ 203df8bae1dSRodney W. Grimes (step).i_ia = (step).i_ia->ia_next; \ 204df8bae1dSRodney W. Grimes if ((inm) != NULL) { \ 205ffa5b11aSGarrett Wollman (step).i_inm = (inm)->inm_entry.le_next; \ 206df8bae1dSRodney W. Grimes break; \ 207df8bae1dSRodney W. Grimes } \ 208df8bae1dSRodney W. Grimes } \ 209df8bae1dSRodney W. Grimes } 210df8bae1dSRodney W. Grimes 211df8bae1dSRodney W. Grimes #define IN_FIRST_MULTI(step, inm) \ 212df8bae1dSRodney W. Grimes /* struct in_multistep step; */ \ 213df8bae1dSRodney W. Grimes /* struct in_multi *inm; */ \ 214df8bae1dSRodney W. Grimes { \ 215df8bae1dSRodney W. Grimes (step).i_ia = in_ifaddr; \ 216df8bae1dSRodney W. Grimes (step).i_inm = NULL; \ 217df8bae1dSRodney W. Grimes IN_NEXT_MULTI((step), (inm)); \ 218df8bae1dSRodney W. Grimes } 219df8bae1dSRodney W. Grimes 220df8bae1dSRodney W. Grimes int in_ifinit __P((struct ifnet *, 221df8bae1dSRodney W. Grimes struct in_ifaddr *, struct sockaddr_in *, int)); 222df8bae1dSRodney W. Grimes struct in_multi *in_addmulti __P((struct in_addr *, struct ifnet *)); 22326f9a767SRodney W. Grimes void in_delmulti __P((struct in_multi *)); 224df8bae1dSRodney W. Grimes void in_ifscrub __P((struct ifnet *, struct in_ifaddr *)); 225df8bae1dSRodney W. Grimes int in_control __P((struct socket *, int, caddr_t, struct ifnet *)); 226707f139eSPaul Richards 227707f139eSPaul Richards #endif 228df8bae1dSRodney W. Grimes #endif 229