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  2. /*
  3. * INET An implementation of the TCP/IP protocol suite for the LINUX
  4. * operating system. INET is implemented using the BSD Socket
  5. * interface as the means of communication with the user level.
  6. *
  7. * Global definitions for the INET interface module.
  8. *
  9. * Version: @(#)if.h 1.0.2 04/18/93
  10. *
  11. * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988
  12. * Ross Biro
  13. * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  14. *
  15. * This program is free software; you can redistribute it and/or
  16. * modify it under the terms of the GNU General Public License
  17. * as published by the Free Software Foundation; either version
  18. * 2 of the License, or (at your option) any later version.
  19. */
  20. #ifndef _LINUX_IF_H
  21. #define _LINUX_IF_H
  23. #include <linux/types.h> /* for "__kernel_caddr_t" et al */
  24. #include <linux/socket.h> /* for "struct sockaddr" et al */
  25. /* for "__user" et al */
  27. #define IFNAMSIZ 16
  28. #define IFALIASZ 256
  29. #include <linux/hdlc/ioctl.h>
  31. /**
  32. * enum net_device_flags - &struct net_device flags
  33. *
  34. * These are the &struct net_device flags, they can be set by drivers, the
  35. * kernel and some can be triggered by userspace. Userspace can query and
  36. * set these flags using userspace utilities but there is also a sysfs
  37. * entry available for all dev flags which can be queried and set. These flags
  38. * are shared for all types of net_devices. The sysfs entries are available
  39. * via /sys/class/net/<dev>/flags. Flags which can be toggled through sysfs
  40. * are annotated below, note that only a few flags can be toggled and some
  41. * other flags are always always preserved from the original net_device flags
  42. * even if you try to set them via sysfs. Flags which are always preserved
  43. * are kept under the flag grouping @IFF_VOLATILE. Flags which are __volatile__
  44. * are annotated below as such.
  45. *
  46. * You should have a pretty good reason to be extending these flags.
  47. *
  48. * @IFF_UP: interface is up. Can be toggled through sysfs.
  49. * @IFF_BROADCAST: broadcast address valid. Volatile.
  50. * @IFF_DEBUG: turn on debugging. Can be toggled through sysfs.
  51. * @IFF_LOOPBACK: is a loopback net. Volatile.
  52. * @IFF_POINTOPOINT: interface is has p-p link. Volatile.
  53. * @IFF_NOTRAILERS: avoid use of trailers. Can be toggled through sysfs.
  54. * Volatile.
  55. * @IFF_RUNNING: interface RFC2863 OPER_UP. Volatile.
  56. * @IFF_NOARP: no ARP protocol. Can be toggled through sysfs. Volatile.
  57. * @IFF_PROMISC: receive all packets. Can be toggled through sysfs.
  58. * @IFF_ALLMULTI: receive all multicast packets. Can be toggled through
  59. * sysfs.
  60. * @IFF_MASTER: master of a load balancer. Volatile.
  61. * @IFF_SLAVE: slave of a load balancer. Volatile.
  62. * @IFF_MULTICAST: Supports multicast. Can be toggled through sysfs.
  63. * @IFF_PORTSEL: can set media type. Can be toggled through sysfs.
  64. * @IFF_AUTOMEDIA: auto media select active. Can be toggled through sysfs.
  65. * @IFF_DYNAMIC: dialup device with changing addresses. Can be toggled
  66. * through sysfs.
  67. * @IFF_LOWER_UP: driver signals L1 up. Volatile.
  68. * @IFF_DORMANT: driver signals dormant. Volatile.
  69. * @IFF_ECHO: echo sent packets. Volatile.
  70. */
  71. enum net_device_flags {
  72. IFF_UP = 1<<0, /* sysfs */
  73. IFF_BROADCAST = 1<<1, /* __volatile__ */
  74. IFF_DEBUG = 1<<2, /* sysfs */
  75. IFF_LOOPBACK = 1<<3, /* __volatile__ */
  76. IFF_POINTOPOINT = 1<<4, /* __volatile__ */
  77. IFF_NOTRAILERS = 1<<5, /* sysfs */
  78. IFF_RUNNING = 1<<6, /* __volatile__ */
  79. IFF_NOARP = 1<<7, /* sysfs */
  80. IFF_PROMISC = 1<<8, /* sysfs */
  81. IFF_ALLMULTI = 1<<9, /* sysfs */
  82. IFF_MASTER = 1<<10, /* __volatile__ */
  83. IFF_SLAVE = 1<<11, /* __volatile__ */
  84. IFF_MULTICAST = 1<<12, /* sysfs */
  85. IFF_PORTSEL = 1<<13, /* sysfs */
  86. IFF_AUTOMEDIA = 1<<14, /* sysfs */
  87. IFF_DYNAMIC = 1<<15, /* sysfs */
  88. IFF_LOWER_UP = 1<<16, /* __volatile__ */
  89. IFF_DORMANT = 1<<17, /* __volatile__ */
  90. IFF_ECHO = 1<<18, /* __volatile__ */
  91. };
  93. #define IFF_UP IFF_UP
  94. #define IFF_BROADCAST IFF_BROADCAST
  95. #define IFF_DEBUG IFF_DEBUG
  96. #define IFF_LOOPBACK IFF_LOOPBACK
  97. #define IFF_POINTOPOINT IFF_POINTOPOINT
  98. #define IFF_NOTRAILERS IFF_NOTRAILERS
  99. #define IFF_RUNNING IFF_RUNNING
  100. #define IFF_NOARP IFF_NOARP
  101. #define IFF_PROMISC IFF_PROMISC
  102. #define IFF_ALLMULTI IFF_ALLMULTI
  103. #define IFF_MASTER IFF_MASTER
  104. #define IFF_SLAVE IFF_SLAVE
  105. #define IFF_MULTICAST IFF_MULTICAST
  106. #define IFF_PORTSEL IFF_PORTSEL
  107. #define IFF_AUTOMEDIA IFF_AUTOMEDIA
  108. #define IFF_DYNAMIC IFF_DYNAMIC
  109. #define IFF_LOWER_UP IFF_LOWER_UP
  110. #define IFF_DORMANT IFF_DORMANT
  111. #define IFF_ECHO IFF_ECHO
  113. #define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
  114. IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
  116. #define IF_GET_IFACE 0x0001 /* for querying only */
  117. #define IF_GET_PROTO 0x0002
  119. /* For definitions see hdlc.h */
  120. #define IF_IFACE_V35 0x1000 /* V.35 serial interface */
  121. #define IF_IFACE_V24 0x1001 /* V.24 serial interface */
  122. #define IF_IFACE_X21 0x1002 /* X.21 serial interface */
  123. #define IF_IFACE_T1 0x1003 /* T1 telco serial interface */
  124. #define IF_IFACE_E1 0x1004 /* E1 telco serial interface */
  125. #define IF_IFACE_SYNC_SERIAL 0x1005 /* can't be set by software */
  126. #define IF_IFACE_X21D 0x1006 /* X.21 Dual Clocking (FarSite) */
  128. /* For definitions see hdlc.h */
  129. #define IF_PROTO_HDLC 0x2000 /* raw HDLC protocol */
  130. #define IF_PROTO_PPP 0x2001 /* PPP protocol */
  131. #define IF_PROTO_CISCO 0x2002 /* Cisco HDLC protocol */
  132. #define IF_PROTO_FR 0x2003 /* Frame Relay protocol */
  133. #define IF_PROTO_FR_ADD_PVC 0x2004 /* Create FR PVC */
  134. #define IF_PROTO_FR_DEL_PVC 0x2005 /* Delete FR PVC */
  135. #define IF_PROTO_X25 0x2006 /* X.25 */
  136. #define IF_PROTO_HDLC_ETH 0x2007 /* raw HDLC, Ethernet emulation */
  137. #define IF_PROTO_FR_ADD_ETH_PVC 0x2008 /* Create FR Ethernet-bridged PVC */
  138. #define IF_PROTO_FR_DEL_ETH_PVC 0x2009 /* Delete FR Ethernet-bridged PVC */
  139. #define IF_PROTO_FR_PVC 0x200A /* for reading PVC status */
  140. #define IF_PROTO_FR_ETH_PVC 0x200B
  141. #define IF_PROTO_RAW 0x200C /* RAW Socket */
  143. /* RFC 2863 operational status */
  144. enum {
  145. IF_OPER_UNKNOWN,
  146. IF_OPER_NOTPRESENT,
  147. IF_OPER_DOWN,
  148. IF_OPER_LOWERLAYERDOWN,
  149. IF_OPER_TESTING,
  150. IF_OPER_DORMANT,
  151. IF_OPER_UP,
  152. };
  154. /* link modes */
  155. enum {
  156. IF_LINK_MODE_DEFAULT,
  157. IF_LINK_MODE_DORMANT, /* limit upward transition to dormant */
  158. };
  160. /*
  161. * Device mapping structure. I'd just gone off and designed a
  162. * beautiful scheme using only loadable modules with arguments
  163. * for driver options and along come the PCMCIA people 8)
  164. *
  165. * Ah well. The get() side of this is good for WDSETUP, and it'll
  166. * be handy for debugging things. The set side is fine for now and
  167. * being very small might be worth keeping for clean configuration.
  168. */
  170. struct ifmap {
  171. unsigned long mem_start;
  172. unsigned long mem_end;
  173. unsigned short base_addr;
  174. unsigned char irq;
  175. unsigned char dma;
  176. unsigned char port;
  177. /* 3 bytes spare */
  178. };
  180. struct if_settings {
  181. unsigned int type; /* Type of physical device or protocol */
  182. unsigned int size; /* Size of the data allocated by the caller */
  183. union {
  184. /* {atm/eth/dsl}_settings anyone ? */
  185. raw_hdlc_proto *raw_hdlc;
  186. cisco_proto *cisco;
  187. fr_proto *fr;
  188. fr_proto_pvc *fr_pvc;
  189. fr_proto_pvc_info *fr_pvc_info;
  191. /* interface settings */
  192. sync_serial_settings *sync;
  193. te1_settings *te1;
  194. } ifs_ifsu;
  195. };
  197. /*
  198. * Interface request structure used for socket
  199. * ioctl's. All interface ioctl's must have parameter
  200. * definitions which begin with ifr_name. The
  201. * remainder may be interface specific.
  202. */
  204. struct ifreq {
  205. #define IFHWADDRLEN 6
  206. union
  207. {
  208. char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
  209. } ifr_ifrn;
  211. union {
  212. struct sockaddr ifru_addr;
  213. struct sockaddr ifru_dstaddr;
  214. struct sockaddr ifru_broadaddr;
  215. struct sockaddr ifru_netmask;
  216. struct sockaddr ifru_hwaddr;
  217. short ifru_flags;
  218. int ifru_ivalue;
  219. int ifru_mtu;
  220. struct ifmap ifru_map;
  221. char ifru_slave[IFNAMSIZ]; /* Just fits the size */
  222. char ifru_newname[IFNAMSIZ];
  223. void * ifru_data;
  224. struct if_settings ifru_settings;
  225. } ifr_ifru;
  226. };
  228. #define ifr_name ifr_ifrn.ifrn_name /* interface name */
  229. #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
  230. #define ifr_addr ifr_ifru.ifru_addr /* address */
  231. #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-p lnk */
  232. #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
  233. #define ifr_netmask ifr_ifru.ifru_netmask /* interface net mask */
  234. #define ifr_flags ifr_ifru.ifru_flags /* flags */
  235. #define ifr_metric ifr_ifru.ifru_ivalue /* metric */
  236. #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
  237. #define ifr_map ifr_ifru.ifru_map /* device map */
  238. #define ifr_slave ifr_ifru.ifru_slave /* slave device */
  239. #define ifr_data ifr_ifru.ifru_data /* for use by interface */
  240. #define ifr_ifindex ifr_ifru.ifru_ivalue /* interface index */
  241. #define ifr_bandwidth ifr_ifru.ifru_ivalue /* link bandwidth */
  242. #define ifr_qlen ifr_ifru.ifru_ivalue /* Queue length */
  243. #define ifr_newname ifr_ifru.ifru_newname /* New name */
  244. #define ifr_settings ifr_ifru.ifru_settings /* Device/proto settings*/
  246. /*
  247. * Structure used in SIOCGIFCONF request.
  248. * Used to retrieve interface configuration
  249. * for machine (useful for programs which
  250. * must know all networks accessible).
  251. */
  253. struct ifconf {
  254. int ifc_len; /* size of buffer */
  255. union {
  256. char *ifcu_buf;
  257. struct ifreq *ifcu_req;
  258. } ifc_ifcu;
  259. };
  260. #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
  261. #define ifc_req ifc_ifcu.ifcu_req /* array of structures */
  263. #endif /* _LINUX_IF_H */
  264.  
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