Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 /*
  2  * INET         An implementation of the TCP/IP protocol suite for the LINUX
  3  *              operating system.  INET is implemented using the  BSD Socket
  4  *              interface as the means of communication with the user level.
  5  *
  6  *              Global definitions for the INET interface module.
  7  *
  8  * Version:     @(#)if.h        1.0.2   04/18/93
  9  *
 10  * Authors:     Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988
 11  *              Ross Biro, <bir7@leland.Stanford.Edu>
 12  *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 13  *
 14  *              This program is free software; you can redistribute it and/or
 15  *              modify it under the terms of the GNU General Public License
 16  *              as published by the Free Software Foundation; either version
 17  *              2 of the License, or (at your option) any later version.
 18  */
 19 #ifndef _LINUX_IF_H
 20 #define _LINUX_IF_H
 21 
 22 #include <linux/types.h>                /* for "__kernel_caddr_t" et al */
 23 #include <linux/socket.h>               /* for "struct sockaddr" et al  */
 24 #include <linux/compiler.h>             /* for "__user" et al           */
 25 
 26 #define IFNAMSIZ        16
 27 #include <linux/hdlc/ioctl.h>
 28 
 29 /* Standard interface flags (netdevice->flags). */
 30 #define IFF_UP          0x1             /* interface is up              */
 31 #define IFF_BROADCAST   0x2             /* broadcast address valid      */
 32 #define IFF_DEBUG       0x4             /* turn on debugging            */
 33 #define IFF_LOOPBACK    0x8             /* is a loopback net            */
 34 #define IFF_POINTOPOINT 0x10            /* interface is has p-p link    */
 35 #define IFF_NOTRAILERS  0x20            /* avoid use of trailers        */
 36 #define IFF_RUNNING     0x40            /* resources allocated          */
 37 #define IFF_NOARP       0x80            /* no ARP protocol              */
 38 #define IFF_PROMISC     0x100           /* receive all packets          */
 39 #define IFF_ALLMULTI    0x200           /* receive all multicast packets*/
 40 
 41 #define IFF_MASTER      0x400           /* master of a load balancer    */
 42 #define IFF_SLAVE       0x800           /* slave of a load balancer     */
 43 
 44 #define IFF_MULTICAST   0x1000          /* Supports multicast           */
 45 
 46 #define IFF_VOLATILE    (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_MASTER|IFF_SLAVE|IFF_RUNNING)
 47 
 48 #define IFF_PORTSEL     0x2000          /* can set media type           */
 49 #define IFF_AUTOMEDIA   0x4000          /* auto media select active     */
 50 #define IFF_DYNAMIC     0x8000          /* dialup device with changing addresses*/
 51 
 52 /* Private (from user) interface flags (netdevice->priv_flags). */
 53 #define IFF_802_1Q_VLAN 0x1             /* 802.1Q VLAN device.          */
 54 #define IFF_EBRIDGE     0x2             /* Ethernet bridging device.    */
 55 
 56 #define IF_GET_IFACE    0x0001          /* for querying only */
 57 #define IF_GET_PROTO    0x0002
 58 
 59 /* For definitions see hdlc.h */
 60 #define IF_IFACE_V35    0x1000          /* V.35 serial interface        */
 61 #define IF_IFACE_V24    0x1001          /* V.24 serial interface        */
 62 #define IF_IFACE_X21    0x1002          /* X.21 serial interface        */
 63 #define IF_IFACE_T1     0x1003          /* T1 telco serial interface    */
 64 #define IF_IFACE_E1     0x1004          /* E1 telco serial interface    */
 65 #define IF_IFACE_SYNC_SERIAL 0x1005     /* can't be set by software     */
 66 #define IF_IFACE_X21D   0x1006          /* X.21 Dual Clocking (FarSite) */
 67 
 68 /* For definitions see hdlc.h */
 69 #define IF_PROTO_HDLC   0x2000          /* raw HDLC protocol            */
 70 #define IF_PROTO_PPP    0x2001          /* PPP protocol                 */
 71 #define IF_PROTO_CISCO  0x2002          /* Cisco HDLC protocol          */
 72 #define IF_PROTO_FR     0x2003          /* Frame Relay protocol         */
 73 #define IF_PROTO_FR_ADD_PVC 0x2004      /*    Create FR PVC             */
 74 #define IF_PROTO_FR_DEL_PVC 0x2005      /*    Delete FR PVC             */
 75 #define IF_PROTO_X25    0x2006          /* X.25                         */
 76 #define IF_PROTO_HDLC_ETH 0x2007        /* raw HDLC, Ethernet emulation */
 77 #define IF_PROTO_FR_ADD_ETH_PVC 0x2008  /*  Create FR Ethernet-bridged PVC */
 78 #define IF_PROTO_FR_DEL_ETH_PVC 0x2009  /*  Delete FR Ethernet-bridged PVC */
 79 #define IF_PROTO_FR_PVC 0x200A          /* for reading PVC status       */
 80 #define IF_PROTO_FR_ETH_PVC 0x200B
 81 #define IF_PROTO_RAW    0x200C          /* RAW Socket                   */
 82 
 83 
 84 /*
 85  *      Device mapping structure. I'd just gone off and designed a 
 86  *      beautiful scheme using only loadable modules with arguments
 87  *      for driver options and along come the PCMCIA people 8)
 88  *
 89  *      Ah well. The get() side of this is good for WDSETUP, and it'll
 90  *      be handy for debugging things. The set side is fine for now and
 91  *      being very small might be worth keeping for clean configuration.
 92  */
 93 
 94 struct ifmap 
 95 {
 96         unsigned long mem_start;
 97         unsigned long mem_end;
 98         unsigned short base_addr; 
 99         unsigned char irq;
100         unsigned char dma;
101         unsigned char port;
102         /* 3 bytes spare */
103 };
104 
105 struct if_settings
106 {
107         unsigned int type;      /* Type of physical device or protocol */
108         unsigned int size;      /* Size of the data allocated by the caller */
109         union {
110                 /* {atm/eth/dsl}_settings anyone ? */
111                 raw_hdlc_proto          __user *raw_hdlc;
112                 cisco_proto             __user *cisco;
113                 fr_proto                __user *fr;
114                 fr_proto_pvc            __user *fr_pvc;
115                 fr_proto_pvc_info       __user *fr_pvc_info;
116 
117                 /* interface settings */
118                 sync_serial_settings    __user *sync;
119                 te1_settings            __user *te1;
120         } ifs_ifsu;
121 };
122 
123 /*
124  * Interface request structure used for socket
125  * ioctl's.  All interface ioctl's must have parameter
126  * definitions which begin with ifr_name.  The
127  * remainder may be interface specific.
128  */
129 
130 struct ifreq 
131 {
132 #define IFHWADDRLEN     6
133         union
134         {
135                 char    ifrn_name[IFNAMSIZ];            /* if name, e.g. "en0" */
136         } ifr_ifrn;
137         
138         union {
139                 struct  sockaddr ifru_addr;
140                 struct  sockaddr ifru_dstaddr;
141                 struct  sockaddr ifru_broadaddr;
142                 struct  sockaddr ifru_netmask;
143                 struct  sockaddr ifru_hwaddr;
144                 short   ifru_flags;
145                 int     ifru_ivalue;
146                 int     ifru_mtu;
147                 struct  ifmap ifru_map;
148                 char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
149                 char    ifru_newname[IFNAMSIZ];
150                 void __user *   ifru_data;
151                 struct  if_settings ifru_settings;
152         } ifr_ifru;
153 };
154 
155 #define ifr_name        ifr_ifrn.ifrn_name      /* interface name       */
156 #define ifr_hwaddr      ifr_ifru.ifru_hwaddr    /* MAC address          */
157 #define ifr_addr        ifr_ifru.ifru_addr      /* address              */
158 #define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-p lnk */
159 #define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address    */
160 #define ifr_netmask     ifr_ifru.ifru_netmask   /* interface net mask   */
161 #define ifr_flags       ifr_ifru.ifru_flags     /* flags                */
162 #define ifr_metric      ifr_ifru.ifru_ivalue    /* metric               */
163 #define ifr_mtu         ifr_ifru.ifru_mtu       /* mtu                  */
164 #define ifr_map         ifr_ifru.ifru_map       /* device map           */
165 #define ifr_slave       ifr_ifru.ifru_slave     /* slave device         */
166 #define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
167 #define ifr_ifindex     ifr_ifru.ifru_ivalue    /* interface index      */
168 #define ifr_bandwidth   ifr_ifru.ifru_ivalue    /* link bandwidth       */
169 #define ifr_qlen        ifr_ifru.ifru_ivalue    /* Queue length         */
170 #define ifr_newname     ifr_ifru.ifru_newname   /* New name             */
171 #define ifr_settings    ifr_ifru.ifru_settings  /* Device/proto settings*/
172 
173 /*
174  * Structure used in SIOCGIFCONF request.
175  * Used to retrieve interface configuration
176  * for machine (useful for programs which
177  * must know all networks accessible).
178  */
179 
180 struct ifconf 
181 {
182         int     ifc_len;                        /* size of buffer       */
183         union 
184         {
185                 char __user *ifcu_buf;
186                 struct ifreq __user *ifcu_req;
187         } ifc_ifcu;
188 };
189 #define ifc_buf ifc_ifcu.ifcu_buf               /* buffer address       */
190 #define ifc_req ifc_ifcu.ifcu_req               /* array of structures  */
191 
192 
193 #endif /* _LINUX_IF_H */
194 
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