1 /* 2 * Copyright (c) 1985, 1986 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)in_var.h 7.4 (Berkeley) 04/22/89 18 */ 19 20 /* 21 * Interface address, Internet version. One of these structures 22 * is allocated for each interface with an Internet address. 23 * The ifaddr structure contains the protocol-independent part 24 * of the structure and is assumed to be first. 25 */ 26 struct in_ifaddr { 27 struct ifaddr ia_ifa; /* protocol-independent info */ 28 #define ia_ifp ia_ifa.ifa_ifp 29 /* ia_{,sub}net{,mask} in host order */ 30 u_long ia_net; /* network number of interface */ 31 u_long ia_netmask; /* mask of net part */ 32 u_long ia_subnet; /* subnet number, including net */ 33 u_long ia_subnetmask; /* mask of subnet part */ 34 int ia_flags; 35 struct in_addr ia_netbroadcast; /* to recognize net broadcasts */ 36 struct in_ifaddr *ia_next; /* next in list of internet addresses */ 37 struct sockaddr_in ia_addr; /* reserve space for interface name */ 38 struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */ 39 #define ia_broadaddr ia_dstaddr 40 struct sockaddr_in ia_sockmask; /* reserve space for general netmask */ 41 }; 42 43 struct in_aliasreq { 44 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 45 struct sockaddr_in ifra_addr; 46 struct sockaddr_in ifra_broadaddr; 47 #define ifra_dstaddr ifra_broadaddr 48 struct sockaddr_in ifra_mask; 49 }; 50 /* 51 * Given a pointer to an in_ifaddr (ifaddr), 52 * return a pointer to the addr as a sockadd_in. 53 */ 54 #define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr)) 55 /* 56 * ia_flags 57 */ 58 #define IFA_ROUTE 0x01 /* routing entry installed */ 59 60 #ifdef KERNEL 61 struct in_ifaddr *in_ifaddr; 62 struct in_ifaddr *in_iaonnetof(); 63 struct ifqueue ipintrq; /* ip packet input queue */ 64 #endif 65