usr/src/sys/deprecated/bbnnet/in_var.h

/*
 * Copyright (c) 1982 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *      @(#)in_var.h    6.2 (Berkeley) 6/8/85
 */

/*
 * Interface address, internet version.  One of these structures
 * is allocated for each interface with an internet address.
 * The ifaddr structure contains the protocol-independent part
 * of the structure and is assumed to be first.
 */
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
        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 */
        int     ia_flags;
        struct  in_ifaddr *ia_next;     /* next in list of internet addresses */
};

/*
 * Given a pointer to an in_ifaddr (ifaddr),
 * return a pointer to the addr as a sockadd_in.
 */
#define IA_SIN(ia) ((struct sockaddr_in *)(&((struct in_ifaddr *)ia)->ia_addr))

#define IA_B_SIN(ia) ((struct sockaddr_in *)(&((struct in_ifaddr *)ia)->ia_broadaddr))

/*
 * in_ifaddr to in_addr
 */
#define IA_INADDR(ia) (IA_SIN(ia)->sin_addr)

#define IA_B_INADDR(ia) (IA_B_SIN(ia)->sin_addr)

/*
 * ia_flags
 */
#define IFA_ROUTE       0x01            /* routing entry installed */

/*
 * protocol switch table built by IP at initialization time
 */

struct ipswitch {
    struct protosw *ipsw_user;          /* for normal user packets passed up */
    struct protosw *ipsw_raw;           /* for raw packets passed up */
    int             ipsw_hlen;
};
extern struct ipswitch ipsw[];

extern u_char inetctlerrmap[];

/*
 * Internet protocol statistics structure (should be at the head
 * of protocol dependent structures).
 */

struct in_stat {
    int in_total;               /* total packets seen */
    int in_badsum;              /* packets with bad cksums */
    int in_tooshort;            /* bad sizes */
    int in_drops;               /* packets no one (except raw) wanted */
};


#ifdef  KERNEL
extern  struct in_ifaddr *in_ifaddr;

extern  struct in_ifaddr *in_iawithaddr();
extern  struct in_ifaddr *in_iawithnet();
extern  struct in_ifaddr *in_iafromif();
#endif