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/*
 * INET         An implementation of the TCP/IP protocol suite for the LINUX
 *              operating system.  INET is implemented using the  BSD Socket
 *              interface as the means of communication with the user level.
 *
 *              Global definitions for the INET interface module.
 *
 * Version:     @(#)if.h        1.0.2   04/18/93
 *
 * Authors:     Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988
 *              Ross Biro, <bir7@leland.Stanford.Edu>
 *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 */

#ifndef _LINUX_IF_H
#define _LINUX_IF_H

#include <linux/types.h>                /* for "__kernel_caddr_t" et al */
#include <linux/socket.h>               /* for "struct sockaddr" et al  */

#define IFNAMSIZ        16
#include <linux/hdlc/ioctl.h>

/* Standard interface flags (netdevice->flags). */
#define IFF_UP          0x1             /* interface is up              */
#define IFF_BROADCAST   0x2             /* broadcast address valid      */
#define IFF_DEBUG       0x4             /* turn on debugging            */
#define IFF_LOOPBACK    0x8             /* is a loopback net            */
#define IFF_POINTOPOINT 0x10            /* interface is has p-p link    */
#define IFF_NOTRAILERS  0x20            /* avoid use of trailers        */
#define IFF_RUNNING     0x40            /* resources allocated          */
#define IFF_NOARP       0x80            /* no ARP protocol              */
#define IFF_PROMISC     0x100           /* receive all packets          */
#define IFF_ALLMULTI    0x200           /* receive all multicast packets*/

#define IFF_MASTER      0x400           /* master of a load balancer    */
#define IFF_SLAVE       0x800           /* slave of a load balancer     */

#define IFF_MULTICAST   0x1000          /* Supports multicast           */

#define IFF_VOLATILE    (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_MASTER|IFF_SLAVE|IFF_RUNNING)

#define IFF_PORTSEL     0x2000          /* can set media type           */
#define IFF_AUTOMEDIA   0x4000          /* auto media select active     */
#define IFF_DYNAMIC     0x8000          /* dialup device with changing addresses*/

/* Private (from user) interface flags (netdevice->priv_flags). */
#define IFF_802_1Q_VLAN 0x1             /* 802.1Q VLAN device.          */
#define IFF_EBRIDGE     0x2             /* Ethernet bridging device.    */

#define IF_GET_IFACE    0x0001          /* for querying only */
#define IF_GET_PROTO    0x0002

/* For definitions see hdlc.h */
#define IF_IFACE_V35    0x1000          /* V.35 serial interface        */
#define IF_IFACE_V24    0x1001          /* V.24 serial interface        */
#define IF_IFACE_X21    0x1002          /* X.21 serial interface        */
#define IF_IFACE_T1     0x1003          /* T1 telco serial interface    */
#define IF_IFACE_E1     0x1004          /* E1 telco serial interface    */
#define IF_IFACE_SYNC_SERIAL 0x1005     /* can't be set by software     */

/* For definitions see hdlc.h */
#define IF_PROTO_HDLC   0x2000          /* raw HDLC protocol            */
#define IF_PROTO_PPP    0x2001          /* PPP protocol                 */
#define IF_PROTO_CISCO  0x2002          /* Cisco HDLC protocol          */
#define IF_PROTO_FR     0x2003          /* Frame Relay protocol         */
#define IF_PROTO_FR_ADD_PVC 0x2004      /*    Create FR PVC             */
#define IF_PROTO_FR_DEL_PVC 0x2005      /*    Delete FR PVC             */
#define IF_PROTO_X25    0x2006          /* X.25                         */
#define IF_PROTO_HDLC_ETH 0x2007        /* raw HDLC, Ethernet emulation */
#define IF_PROTO_FR_ADD_ETH_PVC 0x2008  /*  Create FR Ethernet-bridged PVC */
#define IF_PROTO_FR_DEL_ETH_PVC 0x2009  /*  Delete FR Ethernet-bridged PVC */
#define IF_PROTO_FR_PVC 0x200A          /* for reading PVC status       */
#define IF_PROTO_FR_ETH_PVC 0x200B


/*
 *      Device mapping structure. I'd just gone off and designed a
 *      beautiful scheme using only loadable modules with arguments
 *      for driver options and along come the PCMCIA people 8)
 *
 *      Ah well. The get() side of this is good for WDSETUP, and it'll
 *      be handy for debugging things. The set side is fine for now and
 *      being very small might be worth keeping for clean configuration.
 */


struct ifmap
{
        unsigned long mem_start;
        unsigned long mem_end;
        unsigned short base_addr;
        unsigned char irq;
        unsigned char dma;
        unsigned char port;
        /* 3 bytes spare */
};

struct if_settings
{
        unsigned int type;      /* Type of physical device or protocol */
        unsigned int size;      /* Size of the data allocated by the caller */
        union {
                /* {atm/eth/dsl}_settings anyone ? */
                raw_hdlc_proto          *raw_hdlc;
                cisco_proto             *cisco;
                fr_proto                *fr;
                fr_proto_pvc            *fr_pvc;
                fr_proto_pvc_info       *fr_pvc_info;

                /* interface settings */
                sync_serial_settings    *sync;
                te1_settings            *te1;
        } ifs_ifsu;
};

/*
 * Interface request structure used for socket
 * ioctl's.  All interface ioctl's must have parameter
 * definitions which begin with ifr_name.  The
 * remainder may be interface specific.
 */


struct ifreq
{
#define IFHWADDRLEN     6
        union
        {
                char    ifrn_name[IFNAMSIZ];            /* if name, e.g. "en0" */
        } ifr_ifrn;
       
        union {
                struct  sockaddr ifru_addr;
                struct  sockaddr ifru_dstaddr;
                struct  sockaddr ifru_broadaddr;
                struct  sockaddr ifru_netmask;
                struct  sockaddr ifru_hwaddr;
                short   ifru_flags;
                int     ifru_ivalue;
                int     ifru_mtu;
                struct  ifmap ifru_map;
                char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
                char    ifru_newname[IFNAMSIZ];
                char *  ifru_data;
                struct  if_settings ifru_settings;
        } ifr_ifru;
};

#define ifr_name        ifr_ifrn.ifrn_name      /* interface name       */
#define ifr_hwaddr      ifr_ifru.ifru_hwaddr    /* MAC address          */
#define ifr_addr        ifr_ifru.ifru_addr      /* address              */
#define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-p lnk */
#define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address    */
#define ifr_netmask     ifr_ifru.ifru_netmask   /* interface net mask   */
#define ifr_flags       ifr_ifru.ifru_flags     /* flags                */
#define ifr_metric      ifr_ifru.ifru_ivalue    /* metric               */
#define ifr_mtu         ifr_ifru.ifru_mtu       /* mtu                  */
#define ifr_map         ifr_ifru.ifru_map       /* device map           */
#define ifr_slave       ifr_ifru.ifru_slave     /* slave device         */
#define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
#define ifr_ifindex     ifr_ifru.ifru_ivalue    /* interface index      */
#define ifr_bandwidth   ifr_ifru.ifru_ivalue    /* link bandwidth       */
#define ifr_qlen        ifr_ifru.ifru_ivalue    /* Queue length         */
#define ifr_newname     ifr_ifru.ifru_newname   /* New name             */
#define ifr_settings    ifr_ifru.ifru_settings  /* Device/proto settings*/

/*
 * Structure used in SIOCGIFCONF request.
 * Used to retrieve interface configuration
 * for machine (useful for programs which
 * must know all networks accessible).
 */


struct ifconf
{
        int     ifc_len;                        /* size of buffer       */
        union
        {
                char *                  ifcu_buf;
                struct  ifreq           *ifcu_req;
        } ifc_ifcu;
};
#define ifc_buf ifc_ifcu.ifcu_buf               /* buffer address       */
#define ifc_req ifc_ifcu.ifcu_req               /* array of structures  */


#endif /* _LINUX_IF_H */