MdePkg/Include/Protocol/Arp.h

   1 /** @file
   2   EFI ARP Protocol Definition
   3
   4   The EFI ARP Service Binding Protocol is used to locate EFI
   5   ARP Protocol drivers to create and destroy child of the
   6   driver to communicate with other host using ARP protocol.
   7   The EFI ARP Protocol provides services to map IP network
   8   address to hardware address used by a data link protocol.
   9
  10   Copyright (c) 2006 - 2009, Intel Corporation.<BR>
  11   All rights reserved. This program and the accompanying materials
  12   are licensed and made available under the terms and conditions of the BSD License
  13   which accompanies this distribution.  The full text of the license may be found at<BR>
  14   http://opensource.org/licenses/bsd-license.php
  15
  16   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  17   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  18
  19   @par Revision Reference:
  20   This Protocol is introduced in UEFI Specification 2.0
  21
  22 **/
  23
  24 #ifndef __EFI_ARP_PROTOCOL_H__
  25 #define __EFI_ARP_PROTOCOL_H__
  26
  27 #define EFI_ARP_SERVICE_BINDING_PROTOCOL_GUID \
  28   { \
  29     0xf44c00ee, 0x1f2c, 0x4a00, {0xaa, 0x9, 0x1c, 0x9f, 0x3e, 0x8, 0x0, 0xa3 } \
  30   }
  31
  32 #define EFI_ARP_PROTOCOL_GUID \
  33   { \
  34     0xf4b427bb, 0xba21, 0x4f16, {0xbc, 0x4e, 0x43, 0xe4, 0x16, 0xab, 0x61, 0x9c } \
  35   }
  36
  37 typedef struct _EFI_ARP_PROTOCOL EFI_ARP_PROTOCOL;
  38
  39 typedef struct {
  40   ///
  41   /// Length in bytes of this entry.
  42   ///
  43   UINT32                      Size;
  44
  45   ///
  46   /// Set to TRUE if this entry is a "deny" entry.
  47   /// Set to FALSE if this entry is a "normal" entry.
  48   ///
  49   BOOLEAN                     DenyFlag;
  50
  51   ///
  52   /// Set to TRUE if this entry will not time out.
  53   /// Set to FALSE if this entry will time out.
  54   ///
  55   BOOLEAN                     StaticFlag;
  56
  57   ///
  58   /// 16-bit ARP hardware identifier number.
  59   ///
  60   UINT16                      HwAddressType;
  61
  62   ///
  63   /// 16-bit protocol type number.
  64   ///
  65   UINT16                      SwAddressType;
  66
  67   ///
  68   /// Length of the hardware address.
  69   ///
  70   UINT8                       HwAddressLength;
  71
  72   ///
  73   /// Length of the protocol address.
  74   ///
  75   UINT8                       SwAddressLength;
  76 } EFI_ARP_FIND_DATA;
  77
  78 typedef struct {
  79   ///
  80   /// 16-bit protocol type number in host byte order.
  81   ///
  82   UINT16                    SwAddressType;
  83
  84   ///
  85   /// Length in bytes of the station's protocol address to register.
  86   ///
  87   UINT8                     SwAddressLength;
  88
  89   ///
  90   /// Pointer to the first byte of the protocol address to register. For
  91   /// example, if SwAddressType is 0x0800 (IP), then
  92   /// StationAddress points to the first byte of this station's IP
  93   /// address stored in network byte order.
  94   ///
  95   VOID                      *StationAddress;
  96
  97   ///
  98   /// The timeout value in 100-ns units that is associated with each
  99   /// new dynamic ARP cache entry. If it is set to zero, the value is
 100   /// implementation-specific.
 101   ///
 102   UINT32                    EntryTimeOut;
 103
 104   ///
 105   /// The number of retries before a MAC address is resolved. If it is
 106   /// set to zero, the value is implementation-specific.
 107   ///
 108   UINT32                    RetryCount;
 109
 110   ///
 111   /// The timeout value in 100-ns units that is used to wait for the ARP
 112   /// reply packet or the timeout value between two retries. Set to zero
 113   /// to use implementation-specific value.
 114   ///
 115   UINT32                    RetryTimeOut;
 116 } EFI_ARP_CONFIG_DATA;
 117
 118
 119 /**
 120   This function is used to assign a station address to the ARP cache for this instance
 121   of the ARP driver.
 122
 123   Each ARP instance has one station address. The EFI_ARP_PROTOCOL driver will
 124   respond to ARP requests that match this registered station address. A call to
 125   this function with the ConfigData field set to NULL will reset this ARP instance.
 126
 127   Once a protocol type and station address have been assigned to this ARP instance,
 128   all the following ARP functions will use this information. Attempting to change
 129   the protocol type or station address to a configured ARP instance will result in errors.
 130
 131   @param  This                   Pointer to the EFI_ARP_PROTOCOL instance.
 132   @param  ConfigData             Pointer to the EFI_ARP_CONFIG_DATA structure.
 133
 134   @retval EFI_SUCCESS            The new station address was successfully
 135                                  registered.
 136   @retval EFI_INVALID_PARAMETER  One or more of the following conditions is TRUE:
 137                                  * This is NULL.
 138                                  * SwAddressLength is zero when ConfigData is not NULL.
 139                                  * StationAddress is NULL when ConfigData is not NULL.
 140   @retval EFI_ACCESS_DENIED      The SwAddressType, SwAddressLength, or
 141                                  StationAddress is different from the one that is
 142                                  already registered.
 143   @retval EFI_OUT_OF_RESOURCES   Storage for the new StationAddress could not be
 144                                  allocated.
 145
 146 **/
 147 typedef
 148 EFI_STATUS
 149 (EFIAPI *EFI_ARP_CONFIGURE)(
 150   IN EFI_ARP_PROTOCOL       *This,
 151   IN EFI_ARP_CONFIG_DATA    *ConfigData   OPTIONAL
 152   );
 153
 154 /**
 155   This function is used to insert entries into the ARP cache.
 156
 157   ARP cache entries are typically inserted and updated by network protocol drivers
 158   as network traffic is processed. Most ARP cache entries will time out and be
 159   deleted if the network traffic stops. ARP cache entries that were inserted
 160   by the Add() function may be static (will not time out) or dynamic (will time out).
 161   Default ARP cache timeout values are not covered in most network protocol
 162   specifications (although RFC 1122 comes pretty close) and will only be
 163   discussed in general in this specification. The timeout values that are
 164   used in the EFI Sample Implementation should be used only as a guideline.
 165   Final product implementations of the EFI network stack should be tuned for
 166   their expected network environments.
 167
 168   @param  This                   Pointer to the EFI_ARP_PROTOCOL instance.
 169   @param  DenyFlag               Set to TRUE if this entry is a deny entry. Set to
 170                                  FALSE if this  entry is a normal entry.
 171   @param  TargetSwAddress        Pointer to a protocol address to add (or deny).
 172                                  May be set to NULL if DenyFlag is TRUE.
 173   @param  TargetHwAddress        Pointer to a hardware address to add (or deny).
 174                                  May be set to NULL if DenyFlag is TRUE.
 175   @param  TimeoutValue           Time in 100-ns units that this entry will remain
 176                                  in the ARP cache. A value of zero means that the
 177                                  entry is permanent. A nonzero value will override
 178                                  the one given by Configure() if the entry to be
 179                                  added is a dynamic entry.
 180   @param  Overwrite              If TRUE, the matching cache entry will be
 181                                  overwritten with the supplied parameters. If
 182                                  FALSE, EFI_ACCESS_DENIED is returned if the
 183                                  corresponding cache entry already exists.
 184
 185   @retval EFI_SUCCESS            The entry has been added or updated.
 186   @retval EFI_INVALID_PARAMETER  One or more of the following conditions is TRUE:
 187                                  * This is NULL.
 188                                  * DenyFlag is FALSE and TargetHwAddress is NULL.
 189                                  * DenyFlag is FALSE and TargetSwAddress is NULL.
 190                                  * TargetHwAddress is NULL and TargetSwAddress is NULL.
 191                                  * Neither TargetSwAddress nor TargetHwAddress are NULL when DenyFlag is
 192                                  TRUE.
 193   @retval EFI_OUT_OF_RESOURCES   The new ARP cache entry could not be allocated.
 194   @retval EFI_ACCESS_DENIED      The ARP cache entry already exists and Overwrite
 195                                  is not true.
 196   @retval EFI_NOT_STARTED        The ARP driver instance has not been configured.
 197
 198 **/
 199 typedef
 200 EFI_STATUS
 201 (EFIAPI *EFI_ARP_ADD)(
 202   IN EFI_ARP_PROTOCOL       *This,
 203   IN BOOLEAN                DenyFlag,
 204   IN VOID                   *TargetSwAddress  OPTIONAL,
 205   IN VOID                   *TargetHwAddress  OPTIONAL,
 206   IN UINT32                 TimeoutValue,
 207   IN BOOLEAN                Overwrite
 208   );
 209
 210 /**
 211   This function searches the ARP cache for matching entries and allocates a buffer into
 212   which those entries are copied.
 213
 214   The first part of the allocated buffer is EFI_ARP_FIND_DATA, following which
 215   are protocol address pairs and hardware address pairs.
 216   When finding a specific protocol address (BySwAddress is TRUE and AddressBuffer
 217   is not NULL), the ARP cache timeout for the found entry is reset if Refresh is
 218   set to TRUE. If the found ARP cache entry is a permanent entry, it is not
 219   affected by Refresh.
 220
 221   @param  This                   Pointer to the EFI_ARP_PROTOCOL instance.
 222   @param  BySwAddress            Set to TRUE to look for matching software protocol
 223                                  addresses. Set to FALSE to look for matching
 224                                  hardware protocol addresses.
 225   @param  AddressBuffer          Pointer to address buffer. Set to NULL to match
 226                                  all addresses.
 227   @param  EntryLength            The size of an entry in the entries buffer.
 228   @param  EntryCount             The number of ARP cache entries that are found by
 229                                  the specified criteria.
 230   @param  Entries                Pointer to the buffer that will receive the ARP
 231                                  cache entries.
 232   @param  Refresh                Set to TRUE to refresh the timeout value of the
 233                                  matching ARP cache entry.
 234
 235   @retval EFI_SUCCESS            The requested ARP cache entries were copied into
 236                                  the buffer.
 237   @retval EFI_INVALID_PARAMETER  One or more of the following conditions is TRUE:
 238                                  This is NULL. Both EntryCount and EntryLength are
 239                                  NULL, when Refresh is FALSE.
 240   @retval EFI_NOT_FOUND          No matching entries were found.
 241   @retval EFI_NOT_STARTED        The ARP driver instance has not been configured.
 242
 243 **/
 244 typedef
 245 EFI_STATUS
 246 (EFIAPI *EFI_ARP_FIND)(
 247   IN EFI_ARP_PROTOCOL       *This,
 248   IN BOOLEAN                BySwAddress,
 249   IN VOID                   *AddressBuffer    OPTIONAL,
 250   OUT UINT32                *EntryLength      OPTIONAL,
 251   OUT UINT32                *EntryCount       OPTIONAL,
 252   OUT EFI_ARP_FIND_DATA     **Entries         OPTIONAL,
 253   IN BOOLEAN                Refresh
 254   );
 255
 256
 257 /**
 258   This function removes specified ARP cache entries.
 259
 260   @param  This                   Pointer to the EFI_ARP_PROTOCOL instance.
 261   @param  BySwAddress            Set to TRUE to delete matching protocol addresses.
 262                                  Set to FALSE to delete matching hardware
 263                                  addresses.
 264   @param  AddressBuffer          Pointer to the address buffer that is used as a
 265                                  key to look for the cache entry. Set to NULL to
 266                                  delete all entries.
 267
 268   @retval EFI_SUCCESS            The entry was removed from the ARP cache.
 269   @retval EFI_INVALID_PARAMETER  This is NULL.
 270   @retval EFI_NOT_FOUND          The specified deletion key was not found.
 271   @retval EFI_NOT_STARTED        The ARP driver instance has not been configured.
 272
 273 **/
 274 typedef
 275 EFI_STATUS
 276 (EFIAPI *EFI_ARP_DELETE)(
 277   IN EFI_ARP_PROTOCOL       *This,
 278   IN BOOLEAN                BySwAddress,
 279   IN VOID                   *AddressBuffer   OPTIONAL
 280   );
 281
 282 /**
 283   This function delete all dynamic entries from the ARP cache that match the specified
 284   software protocol type.
 285
 286   @param  This                   Pointer to the EFI_ARP_PROTOCOL instance.
 287
 288   @retval EFI_SUCCESS            The cache has been flushed.
 289   @retval EFI_INVALID_PARAMETER  This is NULL.
 290   @retval EFI_NOT_FOUND          There are no matching dynamic cache entries.
 291   @retval EFI_NOT_STARTED        The ARP driver instance has not been configured.
 292
 293 **/
 294 typedef
 295 EFI_STATUS
 296 (EFIAPI *EFI_ARP_FLUSH)(
 297   IN EFI_ARP_PROTOCOL       *This
 298   );
 299
 300 /**
 301   This function tries to resolve the TargetSwAddress and optionally returns a
 302   TargetHwAddress if it already exists in the ARP cache.
 303
 304   @param  This                   Pointer to the EFI_ARP_PROTOCOL instance.
 305   @param  TargetSwAddress        Pointer to the protocol address to resolve.
 306   @param  ResolvedEvent          Pointer to the event that will be signaled when
 307                                  the address is resolved or some error occurs.
 308   @param  TargetHwAddress        Pointer to the buffer for the resolved hardware
 309                                  address in network byte order.
 310
 311   @retval EFI_SUCCESS            The data is copied from the ARP cache into the
 312                                  TargetHwAddress buffer.
 313   @retval EFI_INVALID_PARAMETER  One or more of the following conditions is TRUE:
 314                                  This is NULL. TargetHwAddress is NULL.
 315   @retval EFI_ACCESS_DENIED      The requested address is not present in the normal
 316                                  ARP cache but is present in the deny address list.
 317                                  Outgoing traffic to that address is forbidden.
 318   @retval EFI_NOT_STARTED        The ARP driver instance has not been configured.
 319   @retval EFI_NOT_READY          The request has been started and is not finished.
 320
 321 **/
 322 typedef
 323 EFI_STATUS
 324 (EFIAPI *EFI_ARP_REQUEST)(
 325   IN EFI_ARP_PROTOCOL       *This,
 326   IN VOID                   *TargetSwAddress  OPTIONAL,
 327   IN EFI_EVENT              ResolvedEvent     OPTIONAL,
 328   OUT VOID                  *TargetHwAddress
 329   );
 330
 331 /**
 332   This function aborts the previous ARP request (identified by This, TargetSwAddress
 333   and ResolvedEvent) that is issued by EFI_ARP_PROTOCOL.Request().
 334
 335   If the request is in the internal ARP request queue, the request is aborted
 336   immediately and its ResolvedEvent is signaled. Only an asynchronous address
 337   request needs to be canceled. If TargeSwAddress and ResolveEvent are both
 338   NULL, all the pending asynchronous requests that have been issued by This
 339   instance will be cancelled and their corresponding events will be signaled.
 340
 341   @param  This                   Pointer to the EFI_ARP_PROTOCOL instance.
 342   @param  TargetSwAddress        Pointer to the protocol address in previous
 343                                  request session.
 344   @param  ResolvedEvent          Pointer to the event that is used as the
 345                                  notification event in previous request session.
 346
 347   @retval EFI_SUCCESS            The pending request session(s) is/are aborted and
 348                                  corresponding event(s) is/are signaled.
 349   @retval EFI_INVALID_PARAMETER  One or more of the following conditions is TRUE:
 350                                  This is NULL. TargetSwAddress is not NULL and
 351                                  ResolvedEvent is NULL. TargetSwAddress is NULL and
 352                                  ResolvedEvent is not NULL.
 353   @retval EFI_NOT_STARTED        The ARP driver instance has not been configured.
 354   @retval EFI_NOT_FOUND          The request is not issued by
 355                                  EFI_ARP_PROTOCOL.Request().
 356
 357
 358 **/
 359 typedef
 360 EFI_STATUS
 361 (EFIAPI *EFI_ARP_CANCEL)(
 362   IN EFI_ARP_PROTOCOL       *This,
 363   IN VOID                   *TargetSwAddress  OPTIONAL,
 364   IN EFI_EVENT              ResolvedEvent     OPTIONAL
 365   );
 366
 367 ///
 368 /// ARP is used to resolve local network protocol addresses into
 369 /// network hardware addresses.
 370 ///
 371 struct _EFI_ARP_PROTOCOL {
 372   EFI_ARP_CONFIGURE         Configure;
 373   EFI_ARP_ADD               Add;
 374   EFI_ARP_FIND              Find;
 375   EFI_ARP_DELETE            Delete;
 376   EFI_ARP_FLUSH             Flush;
 377   EFI_ARP_REQUEST           Request;
 378   EFI_ARP_CANCEL            Cancel;
 379 };
 380
 381
 382 extern EFI_GUID gEfiArpServiceBindingProtocolGuid;
 383 extern EFI_GUID gEfiArpProtocolGuid;
 384
 385 #endif