[mirror_edk2.git] / MdeModulePkg / Include / Library / IpIoLib.h

/** @file\r
  This library is only intended to be used by UEFI network stack modules.\r
  It provides the combined IpIo layer on the EFI IP4 Protocol and EFI IP6 protocol.\r
\r
Copyright (c) 2005 - 2010, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials are licensed and made available under \r
the terms and conditions of the BSD License that accompanies this distribution.  \r
The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php.                                            \r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef _IP_IO_H_\r
#define _IP_IO_H_\r
\r
#include <Protocol/Ip4.h>\r
#include <Protocol/Ip6.h>\r
\r
#include <Library/NetLib.h>\r
\r
//\r
// type and code define for ICMP protocol error \r
// from IP\r
//\r
#define ICMP_TYPE_UNREACH              3\r
#define ICMP_TYPE_TIMXCEED             11\r
#define ICMP_TYPE_PARAMPROB            12\r
#define ICMP_TYPE_SOURCEQUENCH         4\r
\r
#define ICMP_CODE_UNREACH_NET          0\r
#define ICMP_CODE_UNREACH_HOST         1\r
#define ICMP_CODE_UNREACH_PROTOCOL     2\r
#define ICMP_CODE_UNREACH_PORT         3\r
#define ICMP_CODE_UNREACH_NEEDFRAG     4\r
#define ICMP_CODE_UNREACH_SRCFAIL      5\r
#define ICMP_CODE_UNREACH_NET_UNKNOWN  6\r
#define ICMP_CODE_UNREACH_HOST_UNKNOWN 7\r
#define ICMP_CODE_UNREACH_ISOLATED     8\r
#define ICMP_CODE_UNREACH_NET_PROHIB   9\r
#define ICMP_CODE_UNREACH_HOST_PROHIB  10\r
#define ICMP_CODE_UNREACH_TOSNET       11\r
#define ICMP_CODE_UNREACH_TOSHOST      12\r
\r
/**\r
  Get the IP header length from the struct EFI_IP4_HEADER. HeaderLength is\r
  Internet header length in 32-bit words, so HeaderLength<<2 is the real\r
  length of IP header.\r
  \r
  @param[out] HdrPtr   A pointer to EFI_IP4_HEADER.\r
  \r
  @return The IP header length.\r
**/\r
#define EFI_IP4_HEADER_LEN(HdrPtr) ((HdrPtr)->HeaderLength << 2)\r
\r
/**\r
  To types of ICMP error which consist of ICMP header, IP header and original \r
  datagram's data, get length from sum of ICMP header length, IP header length \r
  and first 64 bits of datagram's data length.\r
  \r
  @param[in] IpHdr   A pointer to EFI_IP4_HEADER.\r
  \r
  @return The ICMP error length.\r
**/\r
#define ICMP_ERRLEN(IpHdr) \\r
  (sizeof(IP4_ICMP_HEAD) + EFI_IP4_HEADER_LEN(IpHdr) + 8)\r
\r
/**\r
  Get the packet header from NET_BUF.\r
  \r
  @param[out]  Buf    A pointer to NET_BUF.\r
  @param[in]   Type   Header type.\r
  \r
  @return The pointer to packet header.\r
**/\r
#define NET_PROTO_HDR(Buf, Type)  ((Type *) ((Buf)->BlockOp[0].Head))\r
\r
  \r
extern EFI_IP4_CONFIG_DATA  mIp4IoDefaultIpConfigData;\r
extern EFI_IP6_CONFIG_DATA  mIp6IoDefaultIpConfigData;\r
\r
\r
///\r
/// This error will be delivered to the\r
/// listening transportation layer protocol\r
/// that consumes IpIO.\r
///\r
\r
#define  ICMP_ERR_UNREACH_NET           0\r
#define  ICMP_ERR_UNREACH_HOST          1\r
#define  ICMP_ERR_UNREACH_PROTOCOL      2\r
#define  ICMP_ERR_UNREACH_PORT          3\r
#define  ICMP_ERR_MSGSIZE               4\r
#define  ICMP_ERR_UNREACH_SRCFAIL       5\r
#define  ICMP_ERR_TIMXCEED_INTRANS      6\r
#define  ICMP_ERR_TIMXCEED_REASS        7\r
#define  ICMP_ERR_QUENCH                8\r
#define  ICMP_ERR_PARAMPROB             9\r
\r
#define  ICMP6_ERR_UNREACH_NET          0\r
#define  ICMP6_ERR_UNREACH_HOST         1\r
#define  ICMP6_ERR_UNREACH_PROTOCOL     2\r
#define  ICMP6_ERR_UNREACH_PORT         3\r
#define  ICMP6_ERR_PACKAGE_TOOBIG       4\r
#define  ICMP6_ERR_TIMXCEED_HOPLIMIT    5\r
#define  ICMP6_ERR_TIMXCEED_REASS       6\r
#define  ICMP6_ERR_PARAMPROB_HEADER     7\r
#define  ICMP6_ERR_PARAMPROB_NEXHEADER  8\r
#define  ICMP6_ERR_PARAMPROB_IPV6OPTION 9\r
\r
///\r
/// The helper struct for IpIoGetIcmpErrStatus(). It is for internal use only.\r
///\r
typedef struct {\r
  BOOLEAN                   IsHard;\r
  BOOLEAN                   Notify;\r
} ICMP_ERROR_INFO;\r
\r
typedef union {\r
  EFI_IP4_COMPLETION_TOKEN  Ip4Token;\r
  EFI_IP6_COMPLETION_TOKEN  Ip6Token;\r
} IP_IO_IP_COMPLETION_TOKEN;\r
\r
typedef union {\r
  EFI_IP4_TRANSMIT_DATA     Ip4TxData;\r
  EFI_IP6_TRANSMIT_DATA     Ip6TxData;\r
} IP_IO_IP_TX_DATA;\r
\r
typedef union {\r
  EFI_IP4_RECEIVE_DATA      Ip4RxData;\r
  EFI_IP6_RECEIVE_DATA      Ip6RxData;\r
} IP_IO_IP_RX_DATA;\r
\r
typedef union {\r
  EFI_IP4_OVERRIDE_DATA     Ip4OverrideData;\r
  EFI_IP6_OVERRIDE_DATA     Ip6OverrideData;\r
} IP_IO_OVERRIDE;\r
\r
typedef union {\r
  EFI_IP4_CONFIG_DATA       Ip4CfgData;\r
  EFI_IP6_CONFIG_DATA       Ip6CfgData;\r
} IP_IO_IP_CONFIG_DATA;\r
\r
typedef union {\r
  EFI_IP4_HEADER            *Ip4Hdr;\r
  EFI_IP6_HEADER            *Ip6Hdr;\r
} IP_IO_IP_HEADER;\r
\r
typedef union {\r
  IP4_ADDR                  SubnetMask;\r
  UINT8                     PrefixLength;\r
} IP_IO_IP_MASK;\r
\r
typedef union {\r
  EFI_IP4_PROTOCOL  *Ip4;\r
  EFI_IP6_PROTOCOL  *Ip6;\r
} IP_IO_IP_PROTOCOL;\r
\r
///\r
/// The IP session for an IP receive packet.\r
///\r
typedef struct _EFI_NET_SESSION_DATA {\r
  EFI_IP_ADDRESS        Source;     ///< Source IP of the received packet.\r
  EFI_IP_ADDRESS        Dest;       ///< Destination IP of the received packet.\r
  IP_IO_IP_HEADER       IpHdr;      ///< IP header of the received packet.\r
  UINT32                IpHdrLen;   ///< IP header length of the received packet. \r
                                    ///< For IPv6, it includes the IP6 header \r
                                    ///< length and extension header length. For\r
                                    ///< IPv4, it includes the IP4 header length\r
                                    ///< and options length.\r
  UINT8                 IpVersion;  ///< The IP version of the received packet.\r
} EFI_NET_SESSION_DATA;\r
\r
/**\r
  The prototype is called back when an IP packet is received.\r
  \r
  @param[in] Status        The result of the receive request.\r
  @param[in] IcmpErr       Valid when Status is EFI_ICMP_ERROR.\r
  @param[in] NetSession    The IP session for the received packet.\r
  @param[in] Pkt           The packet received.\r
  @param[in] Context       The data provided by the user for the received packet when\r
                           the callback is registered in IP_IO_OPEN_DATA::RcvdContext.\r
  \r
**/\r
typedef\r
VOID\r
(EFIAPI *PKT_RCVD_NOTIFY) (\r
  IN EFI_STATUS           Status, \r
  IN UINT8                IcmpErr,\r
  IN EFI_NET_SESSION_DATA *NetSession,\r
  IN NET_BUF              *Pkt,\r
  IN VOID                 *Context\r
  );\r
\r
/**\r
  The prototype is called back when an IP packet is sent.\r
  \r
  @param[in] Status        Result of the IP packet being sent.\r
  @param[in] Context       The data provided by user for the received packet when\r
                           the callback is registered in IP_IO_OPEN_DATA::SndContext.\r
  @param[in] Sender        A Union type to specify a pointer of EFI_IP4_PROTOCOL \r
                           or EFI_IP6_PROTOCOL.\r
  @param[in] NotifyData    The Context data specified when calling IpIoSend()\r
  \r
**/\r
typedef\r
VOID\r
(EFIAPI *PKT_SENT_NOTIFY) (\r
  IN EFI_STATUS        Status,\r
  IN VOID              *Context,\r
  IN IP_IO_IP_PROTOCOL Sender,\r
  IN VOID              *NotifyData\r
  );\r
\r
///\r
/// This data structure wraps Ip4/Ip6 instances. The IpIo Library uses it for all\r
/// Ip4/Ip6 operations.\r
///\r
typedef struct _IP_IO {\r
  ///\r
  /// The node used to link this IpIo to the active IpIo list.\r
  ///\r
  LIST_ENTRY                    Entry;\r
\r
  ///\r
  /// The list used to maintain the IP instance for different sending purpose.\r
  ///\r
  LIST_ENTRY                    IpList;\r
  \r
  EFI_HANDLE                    Controller;\r
  EFI_HANDLE                    Image;\r
  EFI_HANDLE                    ChildHandle;\r
  //\r
  // The IP instance consumed by this IP_IO\r
  //\r
  IP_IO_IP_PROTOCOL             Ip;\r
  BOOLEAN                       IsConfigured;\r
\r
  ///\r
  /// Some ip configuration data can be changed.\r
  ///\r
  UINT8                         Protocol;\r
\r
  ///\r
  /// Token and event used to get data from IP.\r
  ///\r
  IP_IO_IP_COMPLETION_TOKEN     RcvToken; \r
\r
  ///\r
  /// List entry used to link the token passed to IP_IO.\r
  ///\r
  LIST_ENTRY                    PendingSndList;\r
\r
  //\r
  // User interface used to get notify from IP_IO\r
  //\r
  VOID                          *RcvdContext;    ///< See IP_IO_OPEN_DATA::RcvdContext.\r
  VOID                          *SndContext;     ///< See IP_IO_OPEN_DATA::SndContext.\r
  PKT_RCVD_NOTIFY               PktRcvdNotify;   ///< See IP_IO_OPEN_DATA::PktRcvdNotify.\r
  PKT_SENT_NOTIFY               PktSentNotify;   ///< See IP_IO_OPEN_DATA::PktSentNotify.\r
  UINT8                         IpVersion;\r
} IP_IO;\r
\r
///\r
/// The struct is for the user to pass IP configuration and callbacks to IP_IO.\r
/// It is used by IpIoOpen().\r
///\r
typedef struct _IP_IO_OPEN_DATA {\r
  IP_IO_IP_CONFIG_DATA IpConfigData;    ///< Configuration of the IP instance.\r
  VOID                 *RcvdContext;    ///< Context data used by receive callback.\r
  VOID                 *SndContext;     ///< Context data used by send callback.\r
  PKT_RCVD_NOTIFY      PktRcvdNotify;   ///< Receive callback.\r
  PKT_SENT_NOTIFY      PktSentNotify;   ///< Send callback.\r
} IP_IO_OPEN_DATA;\r
\r
///\r
/// Internal struct book-keeping send request of IP_IO.\r
///\r
/// An IP_IO_SEND_ENTRY will be created each time a send request is issued to\r
/// IP_IO via IpIoSend().\r
///\r
typedef struct _IP_IO_SEND_ENTRY {\r
  LIST_ENTRY                Entry;\r
  IP_IO                     *IpIo;\r
  VOID                      *Context;\r
  VOID                      *NotifyData;\r
  IP_IO_IP_PROTOCOL         Ip;\r
  NET_BUF                   *Pkt;\r
  IP_IO_IP_COMPLETION_TOKEN SndToken;\r
} IP_IO_SEND_ENTRY;\r
\r
///\r
/// The IP_IO_IP_INFO is used in IpIoSend() to override the default IP instance\r
/// in IP_IO.\r
///\r
typedef struct _IP_IO_IP_INFO {\r
  EFI_IP_ADDRESS            Addr;\r
  IP_IO_IP_MASK             PreMask;\r
  LIST_ENTRY                Entry;\r
  EFI_HANDLE                ChildHandle;\r
  IP_IO_IP_PROTOCOL         Ip;\r
  IP_IO_IP_COMPLETION_TOKEN DummyRcvToken;\r
  INTN                      RefCnt;\r
  UINT8                     IpVersion;\r
} IP_IO_IP_INFO;\r
\r
/**\r
  Create a new IP_IO instance.\r
  \r
  This function uses IP4/IP6 service binding protocol in Controller to create\r
  an IP4/IP6 child (aka IP4/IP6 instance).\r
\r
  @param[in]  Image             The image handle of the driver or application that\r
                                consumes IP_IO.\r
  @param[in]  Controller        The controller handle that has IP4 or IP6 service\r
                                binding protocol installed.\r
  @param[in]  IpVersion         The version of the IP protocol to use, either\r
                                IPv4 or IPv6.                            \r
\r
  @return The pointer to a newly created IP_IO instance, or NULL if failed.\r
\r
**/\r
IP_IO *\r
EFIAPI\r
IpIoCreate (\r
  IN EFI_HANDLE Image,\r
  IN EFI_HANDLE Controller,\r
  IN UINT8      IpVersion\r
  );\r
\r
/**\r
  Destroy an IP_IO instance.\r
  \r
  This function is paired with IpIoCreate(). The IP_IO will be closed first.\r
  Resource will be freed afterwards. See IpIoClose().\r
\r
  @param[in, out]  IpIo         The pointer to the IP_IO instance that needs to be\r
                                destroyed.\r
\r
  @retval          EFI_SUCCESS  The IP_IO instance was destroyed successfully.\r
  @retval          Others       An error condition occurred.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IpIoDestroy (\r
  IN OUT IP_IO *IpIo\r
  );\r
\r
/**\r
  Stop an IP_IO instance.\r
  \r
  This function is paired with IpIoOpen(). The IP_IO will be unconfigured, and all\r
  pending send/receive tokens will be canceled.\r
\r
  @param[in, out]  IpIo            The pointer to the IP_IO instance that needs to stop.\r
\r
  @retval          EFI_SUCCESS     The IP_IO instance stopped successfully.\r
  @retval          Others          Anrror condition occurred.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IpIoStop (\r
  IN OUT IP_IO *IpIo\r
  );\r
\r
/**\r
  Open an IP_IO instance for use.\r
  \r
  This function is called after IpIoCreate(). It is used for configuring the IP\r
  instance and register the callbacks and their context data for sending and\r
  receiving IP packets.\r
\r
  @param[in, out]  IpIo               The pointer to an IP_IO instance that needs\r
                                      to open.\r
  @param[in]       OpenData           The configuration data and callbacks for\r
                                      the IP_IO instance.\r
\r
  @retval          EFI_SUCCESS        The IP_IO instance opened with OpenData\r
                                      successfully.\r
  @retval          EFI_ACCESS_DENIED  The IP_IO instance is configured; avoid  \r
                                      reopening it.\r
  @retval          Others             An error condition occurred.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IpIoOpen (\r
  IN OUT IP_IO           *IpIo,\r
  IN     IP_IO_OPEN_DATA *OpenData\r
  );\r
\r
/**\r
  Send out an IP packet.\r
  \r
  This function is called after IpIoOpen(). The data to be sent are wrapped in\r
  Pkt. The IP instance wrapped in IpIo is used for sending by default, but can be\r
  overriden by Sender. Other sending configurations, such as source address and gateway\r
  address, are specified in OverrideData.\r
\r
  @param[in, out]  IpIo                  The pointer to an IP_IO instance used for sending IP\r
                                         packet.\r
  @param[in, out]  Pkt                   The pointer to the IP packet to be sent.\r
  @param[in]       Sender                Optional. The IP protocol instance used for sending.\r
  @param[in]       Context               The optional context data.\r
  @param[in]       NotifyData            The optional notify data.\r
  @param[in]       Dest                  The destination IP address to send this packet to.\r
  @param[in]       OverrideData          The data to override some configuration of the IP\r
                                         instance used for sending.\r
\r
  @retval          EFI_SUCCESS           The operation completed successfully.\r
  @retval          EFI_NOT_STARTED       The IpIo is not configured.\r
  @retval          EFI_OUT_OF_RESOURCES  Failed due to resource limitations.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IpIoSend (\r
  IN OUT IP_IO          *IpIo,\r
  IN OUT NET_BUF        *Pkt,\r
  IN     IP_IO_IP_INFO  *Sender        OPTIONAL,\r
  IN     VOID           *Context       OPTIONAL,\r
  IN     VOID           *NotifyData    OPTIONAL,\r
  IN     EFI_IP_ADDRESS *Dest,\r
  IN     IP_IO_OVERRIDE *OverrideData  OPTIONAL\r
  );\r
\r
/**\r
  Cancel the IP transmit token that wraps this Packet.\r
\r
  @param[in]  IpIo                  The pointer to the IP_IO instance.\r
  @param[in]  Packet                The pointer to the packet of NET_BUF to cancel.\r
\r
**/\r
VOID\r
EFIAPI\r
IpIoCancelTxToken (\r
  IN IP_IO  *IpIo,\r
  IN VOID   *Packet\r
  );\r
\r
/**\r
  Add a new IP instance for sending data.\r
  \r
  The function is used to add the IP_IO to the IP_IO sending list. The caller\r
  can later use IpIoFindSender() to get the IP_IO and call IpIoSend() to send\r
  data.\r
\r
  @param[in, out]  IpIo               The pointer to an IP_IO instance to add a new IP\r
                                      instance for sending purposes.\r
\r
  @return The pointer to the created IP_IO_IP_INFO structure; NULL if failed.\r
\r
**/\r
IP_IO_IP_INFO *\r
EFIAPI\r
IpIoAddIp (\r
  IN OUT IP_IO  *IpIo\r
  );\r
\r
/**\r
  Configure the IP instance of this IpInfo and start the receiving if IpConfigData\r
  is not NULL.\r
\r
  @param[in, out]  IpInfo          The pointer to the IP_IO_IP_INFO instance.\r
  @param[in, out]  IpConfigData    The IP4 or IP6 configure data used to configure \r
                                   the IP instance. If NULL, the IP instance is reset.\r
                                   If UseDefaultAddress is set to TRUE, and the configure\r
                                   operation succeeds, the default address information\r
                                   is written back in this IpConfigData.\r
\r
  @retval          EFI_SUCCESS     The IP instance of this IpInfo was configured successfully,\r
                                   or there is no need to reconfigure it.\r
  @retval          Others          The configuration failed.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IpIoConfigIp (\r
  IN OUT IP_IO_IP_INFO        *IpInfo,\r
  IN OUT VOID                 *IpConfigData OPTIONAL\r
  );\r
\r
/**\r
  Destroy an IP instance maintained in IpIo->IpList for\r
  sending purpose.\r
  \r
  This function pairs with IpIoAddIp(). The IpInfo is previously created by\r
  IpIoAddIp(). The IP_IO_IP_INFO::RefCnt is decremented and the IP instance\r
  will be dstroyed if the RefCnt is zero.\r
\r
  @param[in]  IpIo                  The pointer to the IP_IO instance.\r
  @param[in]  IpInfo                The pointer to the IpInfo to be removed.\r
\r
**/\r
VOID\r
EFIAPI\r
IpIoRemoveIp (\r
  IN IP_IO            *IpIo,\r
  IN IP_IO_IP_INFO    *IpInfo\r
  );\r
\r
/**\r
  Find the first IP protocol maintained in IpIo whose local\r
  address is the same as Src.\r
  \r
  This function is called when the caller needs the IpIo to send data to the\r
  specified Src. The IpIo was added previously by IpIoAddIp().\r
\r
  @param[in, out]  IpIo              The pointer to the pointer of the IP_IO instance.\r
  @param[in]       IpVersion         The version of the IP protocol to use, either\r
                                     IPv4 or IPv6.\r
  @param[in]       Src               The local IP address.\r
\r
  @return The pointer to the IP protocol can be used for sending purpose and its local\r
          address is the same with Src.\r
\r
**/\r
IP_IO_IP_INFO *\r
EFIAPI\r
IpIoFindSender (\r
  IN OUT IP_IO           **IpIo,\r
  IN     UINT8           IpVersion,\r
  IN     EFI_IP_ADDRESS  *Src\r
  );\r
\r
/**\r
  Get the ICMP error map information.\r
  \r
  The ErrorStatus will be returned. The IsHard and Notify are optional. If they\r
  are not NULL, this routine will fill them.\r
\r
  @param[in]   IcmpError             IcmpError Type.\r
  @param[in]   IpVersion             The version of the IP protocol to use,\r
                                     either IPv4 or IPv6. \r
  @param[out]  IsHard                If TRUE, indicates that it is a hard error.\r
  @param[out]  Notify                If TRUE, SockError needs to be notified.\r
\r
  @return The ICMP Error Status, such as EFI_NETWORK_UNREACHABLE.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IpIoGetIcmpErrStatus (\r
  IN  UINT8       IcmpError,\r
  IN  UINT8       IpVersion,\r
  OUT BOOLEAN     *IsHard  OPTIONAL,\r
  OUT BOOLEAN     *Notify  OPTIONAL\r
  );\r
\r
/**\r
  Refresh the remote peer's Neighbor Cache entries.\r
\r
  This function is called when the caller needs the IpIo to refresh the existing\r
  IPv6 neighbor cache entries since the neighbor is considered reachable by the \r
  node has recently received a confirmation that packets sent recently to the \r
  neighbor were received by its IP layer. \r
\r
  @param[in]   IpIo                  The pointer to an IP_IO instance\r
  @param[in]   Neighbor              The IP address of the neighbor\r
  @param[in]   Timeout               The time in 100-ns units that this entry will\r
                                     remain in the neighbor cache. A value of \r
                                     zero means that the entry is permanent. \r
                                     A value of non-zero means that the entry is \r
                                     dynamic and will be deleted after Timeout.\r
\r
  @retval      EFI_SUCCESS           The operation completed successfully.\r
  @retval      EFI_NOT_STARTED       The IpIo is not configured.\r
  @retval      EFI_INVALID_PARAMETER The Neighbor Address is invalid.\r
  @retval      EFI_NOT_FOUND         The neighbor cache entry is not in the \r
                                     neighbor table.  \r
  @retval      EFI_OUT_OF_RESOURCES  Failed due to resource limitations.\r
\r
**/\r
EFI_STATUS\r
IpIoRefreshNeighbor (\r
  IN IP_IO           *IpIo,\r
  IN EFI_IP_ADDRESS  *Neighbor,\r
  IN UINT32          Timeout  \r
  );\r
\r
#endif\r
\r
Commit	Line	Data
	1	/** @file\r
	2	This library is only intended to be used by UEFI network stack modules.\r
	3	It provides the combined IpIo layer on the EFI IP4 Protocol and EFI IP6 protocol.\r
	4	\r
	5	Copyright (c) 2005 - 2010, Intel Corporation. All rights reserved.<BR>\r
	6	This program and the accompanying materials are licensed and made available under \r
	7	the terms and conditions of the BSD License that accompanies this distribution. \r
	8	The full text of the license may be found at\r
	9	http://opensource.org/licenses/bsd-license.php. \r
	10	\r
	11	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	12	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	13	\r
	14	**/\r
	15	\r
	16	#ifndef _IP_IO_H_\r
	17	#define _IP_IO_H_\r
	18	\r
	19	#include <Protocol/Ip4.h>\r
	20	#include <Protocol/Ip6.h>\r
	21	\r
	22	#include <Library/NetLib.h>\r
	23	\r
	24	//\r
	25	// type and code define for ICMP protocol error \r
	26	// from IP\r
	27	//\r
	28	#define ICMP_TYPE_UNREACH 3\r
	29	#define ICMP_TYPE_TIMXCEED 11\r
	30	#define ICMP_TYPE_PARAMPROB 12\r
	31	#define ICMP_TYPE_SOURCEQUENCH 4\r
	32	\r
	33	#define ICMP_CODE_UNREACH_NET 0\r
	34	#define ICMP_CODE_UNREACH_HOST 1\r
	35	#define ICMP_CODE_UNREACH_PROTOCOL 2\r
	36	#define ICMP_CODE_UNREACH_PORT 3\r
	37	#define ICMP_CODE_UNREACH_NEEDFRAG 4\r
	38	#define ICMP_CODE_UNREACH_SRCFAIL 5\r
	39	#define ICMP_CODE_UNREACH_NET_UNKNOWN 6\r
	40	#define ICMP_CODE_UNREACH_HOST_UNKNOWN 7\r
	41	#define ICMP_CODE_UNREACH_ISOLATED 8\r
	42	#define ICMP_CODE_UNREACH_NET_PROHIB 9\r
	43	#define ICMP_CODE_UNREACH_HOST_PROHIB 10\r
	44	#define ICMP_CODE_UNREACH_TOSNET 11\r
	45	#define ICMP_CODE_UNREACH_TOSHOST 12\r
	46	\r
	47	/**\r
	48	Get the IP header length from the struct EFI_IP4_HEADER. HeaderLength is\r
	49	Internet header length in 32-bit words, so HeaderLength<<2 is the real\r
	50	length of IP header.\r
	51	\r
	52	@param[out] HdrPtr A pointer to EFI_IP4_HEADER.\r
	53	\r
	54	@return The IP header length.\r
	55	**/\r
	56	#define EFI_IP4_HEADER_LEN(HdrPtr) ((HdrPtr)->HeaderLength << 2)\r
	57	\r
	58	/**\r
	59	To types of ICMP error which consist of ICMP header, IP header and original \r
	60	datagram's data, get length from sum of ICMP header length, IP header length \r
	61	and first 64 bits of datagram's data length.\r
	62	\r
	63	@param[in] IpHdr A pointer to EFI_IP4_HEADER.\r
	64	\r
	65	@return The ICMP error length.\r
	66	**/\r
	67	#define ICMP_ERRLEN(IpHdr) \\r
	68	(sizeof(IP4_ICMP_HEAD) + EFI_IP4_HEADER_LEN(IpHdr) + 8)\r
	69	\r
	70	/**\r
	71	Get the packet header from NET_BUF.\r
	72	\r
	73	@param[out] Buf A pointer to NET_BUF.\r
	74	@param[in] Type Header type.\r
	75	\r
	76	@return The pointer to packet header.\r
	77	**/\r
	78	#define NET_PROTO_HDR(Buf, Type) ((Type *) ((Buf)->BlockOp[0].Head))\r
	79	\r
	80	\r
	81	extern EFI_IP4_CONFIG_DATA mIp4IoDefaultIpConfigData;\r
	82	extern EFI_IP6_CONFIG_DATA mIp6IoDefaultIpConfigData;\r
	83	\r
	84	\r
	85	///\r
	86	/// This error will be delivered to the\r
	87	/// listening transportation layer protocol\r
	88	/// that consumes IpIO.\r
	89	///\r
	90	\r
	91	#define ICMP_ERR_UNREACH_NET 0\r
	92	#define ICMP_ERR_UNREACH_HOST 1\r
	93	#define ICMP_ERR_UNREACH_PROTOCOL 2\r
	94	#define ICMP_ERR_UNREACH_PORT 3\r
	95	#define ICMP_ERR_MSGSIZE 4\r
	96	#define ICMP_ERR_UNREACH_SRCFAIL 5\r
	97	#define ICMP_ERR_TIMXCEED_INTRANS 6\r
	98	#define ICMP_ERR_TIMXCEED_REASS 7\r
	99	#define ICMP_ERR_QUENCH 8\r
	100	#define ICMP_ERR_PARAMPROB 9\r
	101	\r
	102	#define ICMP6_ERR_UNREACH_NET 0\r
	103	#define ICMP6_ERR_UNREACH_HOST 1\r
	104	#define ICMP6_ERR_UNREACH_PROTOCOL 2\r
	105	#define ICMP6_ERR_UNREACH_PORT 3\r
	106	#define ICMP6_ERR_PACKAGE_TOOBIG 4\r
	107	#define ICMP6_ERR_TIMXCEED_HOPLIMIT 5\r
	108	#define ICMP6_ERR_TIMXCEED_REASS 6\r
	109	#define ICMP6_ERR_PARAMPROB_HEADER 7\r
	110	#define ICMP6_ERR_PARAMPROB_NEXHEADER 8\r
	111	#define ICMP6_ERR_PARAMPROB_IPV6OPTION 9\r
	112	\r
	113	///\r
	114	/// The helper struct for IpIoGetIcmpErrStatus(). It is for internal use only.\r
	115	///\r
	116	typedef struct {\r
	117	BOOLEAN IsHard;\r
	118	BOOLEAN Notify;\r
	119	} ICMP_ERROR_INFO;\r
	120	\r
	121	typedef union {\r
	122	EFI_IP4_COMPLETION_TOKEN Ip4Token;\r
	123	EFI_IP6_COMPLETION_TOKEN Ip6Token;\r
	124	} IP_IO_IP_COMPLETION_TOKEN;\r
	125	\r
	126	typedef union {\r
	127	EFI_IP4_TRANSMIT_DATA Ip4TxData;\r
	128	EFI_IP6_TRANSMIT_DATA Ip6TxData;\r
	129	} IP_IO_IP_TX_DATA;\r
	130	\r
	131	typedef union {\r
	132	EFI_IP4_RECEIVE_DATA Ip4RxData;\r
	133	EFI_IP6_RECEIVE_DATA Ip6RxData;\r
	134	} IP_IO_IP_RX_DATA;\r
	135	\r
	136	typedef union {\r
	137	EFI_IP4_OVERRIDE_DATA Ip4OverrideData;\r
	138	EFI_IP6_OVERRIDE_DATA Ip6OverrideData;\r
	139	} IP_IO_OVERRIDE;\r
	140	\r
	141	typedef union {\r
	142	EFI_IP4_CONFIG_DATA Ip4CfgData;\r
	143	EFI_IP6_CONFIG_DATA Ip6CfgData;\r
	144	} IP_IO_IP_CONFIG_DATA;\r
	145	\r
	146	typedef union {\r
	147	EFI_IP4_HEADER *Ip4Hdr;\r
	148	EFI_IP6_HEADER *Ip6Hdr;\r
	149	} IP_IO_IP_HEADER;\r
	150	\r
	151	typedef union {\r
	152	IP4_ADDR SubnetMask;\r
	153	UINT8 PrefixLength;\r
	154	} IP_IO_IP_MASK;\r
	155	\r
	156	typedef union {\r
	157	EFI_IP4_PROTOCOL *Ip4;\r
	158	EFI_IP6_PROTOCOL *Ip6;\r
	159	} IP_IO_IP_PROTOCOL;\r
	160	\r
	161	///\r
	162	/// The IP session for an IP receive packet.\r
	163	///\r
	164	typedef struct _EFI_NET_SESSION_DATA {\r
	165	EFI_IP_ADDRESS Source; ///< Source IP of the received packet.\r
	166	EFI_IP_ADDRESS Dest; ///< Destination IP of the received packet.\r
	167	IP_IO_IP_HEADER IpHdr; ///< IP header of the received packet.\r
	168	UINT32 IpHdrLen; ///< IP header length of the received packet. \r
	169	///< For IPv6, it includes the IP6 header \r
	170	///< length and extension header length. For\r
	171	///< IPv4, it includes the IP4 header length\r
	172	///< and options length.\r
	173	UINT8 IpVersion; ///< The IP version of the received packet.\r
	174	} EFI_NET_SESSION_DATA;\r
	175	\r
	176	/**\r
	177	The prototype is called back when an IP packet is received.\r
	178	\r
	179	@param[in] Status The result of the receive request.\r
	180	@param[in] IcmpErr Valid when Status is EFI_ICMP_ERROR.\r
	181	@param[in] NetSession The IP session for the received packet.\r
	182	@param[in] Pkt The packet received.\r
	183	@param[in] Context The data provided by the user for the received packet when\r
	184	the callback is registered in IP_IO_OPEN_DATA::RcvdContext.\r
	185	\r
	186	**/\r
	187	typedef\r
	188	VOID\r
	189	(EFIAPI *PKT_RCVD_NOTIFY) (\r
	190	IN EFI_STATUS Status, \r
	191	IN UINT8 IcmpErr,\r
	192	IN EFI_NET_SESSION_DATA *NetSession,\r
	193	IN NET_BUF *Pkt,\r
	194	IN VOID *Context\r
	195	);\r
	196	\r
	197	/**\r
	198	The prototype is called back when an IP packet is sent.\r
	199	\r
	200	@param[in] Status Result of the IP packet being sent.\r
	201	@param[in] Context The data provided by user for the received packet when\r
	202	the callback is registered in IP_IO_OPEN_DATA::SndContext.\r
	203	@param[in] Sender A Union type to specify a pointer of EFI_IP4_PROTOCOL \r
	204	or EFI_IP6_PROTOCOL.\r
	205	@param[in] NotifyData The Context data specified when calling IpIoSend()\r
	206	\r
	207	**/\r
	208	typedef\r
	209	VOID\r
	210	(EFIAPI *PKT_SENT_NOTIFY) (\r
	211	IN EFI_STATUS Status,\r
	212	IN VOID *Context,\r
	213	IN IP_IO_IP_PROTOCOL Sender,\r
	214	IN VOID *NotifyData\r
	215	);\r
	216	\r
	217	///\r
	218	/// This data structure wraps Ip4/Ip6 instances. The IpIo Library uses it for all\r
	219	/// Ip4/Ip6 operations.\r
	220	///\r
	221	typedef struct _IP_IO {\r
	222	///\r
	223	/// The node used to link this IpIo to the active IpIo list.\r
	224	///\r
	225	LIST_ENTRY Entry;\r
	226	\r
	227	///\r
	228	/// The list used to maintain the IP instance for different sending purpose.\r
	229	///\r
	230	LIST_ENTRY IpList;\r
	231	\r
	232	EFI_HANDLE Controller;\r
	233	EFI_HANDLE Image;\r
	234	EFI_HANDLE ChildHandle;\r
	235	//\r
	236	// The IP instance consumed by this IP_IO\r
	237	//\r
	238	IP_IO_IP_PROTOCOL Ip;\r
	239	BOOLEAN IsConfigured;\r
	240	\r
	241	///\r
	242	/// Some ip configuration data can be changed.\r
	243	///\r
	244	UINT8 Protocol;\r
	245	\r
	246	///\r
	247	/// Token and event used to get data from IP.\r
	248	///\r
	249	IP_IO_IP_COMPLETION_TOKEN RcvToken; \r
	250	\r
	251	///\r
	252	/// List entry used to link the token passed to IP_IO.\r
	253	///\r
	254	LIST_ENTRY PendingSndList;\r
	255	\r
	256	//\r
	257	// User interface used to get notify from IP_IO\r
	258	//\r
	259	VOID *RcvdContext; ///< See IP_IO_OPEN_DATA::RcvdContext.\r
	260	VOID *SndContext; ///< See IP_IO_OPEN_DATA::SndContext.\r
	261	PKT_RCVD_NOTIFY PktRcvdNotify; ///< See IP_IO_OPEN_DATA::PktRcvdNotify.\r
	262	PKT_SENT_NOTIFY PktSentNotify; ///< See IP_IO_OPEN_DATA::PktSentNotify.\r
	263	UINT8 IpVersion;\r
	264	} IP_IO;\r
	265	\r
	266	///\r
	267	/// The struct is for the user to pass IP configuration and callbacks to IP_IO.\r
	268	/// It is used by IpIoOpen().\r
	269	///\r
	270	typedef struct _IP_IO_OPEN_DATA {\r
	271	IP_IO_IP_CONFIG_DATA IpConfigData; ///< Configuration of the IP instance.\r
	272	VOID *RcvdContext; ///< Context data used by receive callback.\r
	273	VOID *SndContext; ///< Context data used by send callback.\r
	274	PKT_RCVD_NOTIFY PktRcvdNotify; ///< Receive callback.\r
	275	PKT_SENT_NOTIFY PktSentNotify; ///< Send callback.\r
	276	} IP_IO_OPEN_DATA;\r
	277	\r
	278	///\r
	279	/// Internal struct book-keeping send request of IP_IO.\r
	280	///\r
	281	/// An IP_IO_SEND_ENTRY will be created each time a send request is issued to\r
	282	/// IP_IO via IpIoSend().\r
	283	///\r
	284	typedef struct _IP_IO_SEND_ENTRY {\r
	285	LIST_ENTRY Entry;\r
	286	IP_IO *IpIo;\r
	287	VOID *Context;\r
	288	VOID *NotifyData;\r
	289	IP_IO_IP_PROTOCOL Ip;\r
	290	NET_BUF *Pkt;\r
	291	IP_IO_IP_COMPLETION_TOKEN SndToken;\r
	292	} IP_IO_SEND_ENTRY;\r
	293	\r
	294	///\r
	295	/// The IP_IO_IP_INFO is used in IpIoSend() to override the default IP instance\r
	296	/// in IP_IO.\r
	297	///\r
	298	typedef struct _IP_IO_IP_INFO {\r
	299	EFI_IP_ADDRESS Addr;\r
	300	IP_IO_IP_MASK PreMask;\r
	301	LIST_ENTRY Entry;\r
	302	EFI_HANDLE ChildHandle;\r
	303	IP_IO_IP_PROTOCOL Ip;\r
	304	IP_IO_IP_COMPLETION_TOKEN DummyRcvToken;\r
	305	INTN RefCnt;\r
	306	UINT8 IpVersion;\r
	307	} IP_IO_IP_INFO;\r
	308	\r
	309	/**\r
	310	Create a new IP_IO instance.\r
	311	\r
	312	This function uses IP4/IP6 service binding protocol in Controller to create\r
	313	an IP4/IP6 child (aka IP4/IP6 instance).\r
	314	\r
	315	@param[in] Image The image handle of the driver or application that\r
	316	consumes IP_IO.\r
	317	@param[in] Controller The controller handle that has IP4 or IP6 service\r
	318	binding protocol installed.\r
	319	@param[in] IpVersion The version of the IP protocol to use, either\r
	320	IPv4 or IPv6. \r
	321	\r
	322	@return The pointer to a newly created IP_IO instance, or NULL if failed.\r
	323	\r
	324	**/\r
	325	IP_IO *\r
	326	EFIAPI\r
	327	IpIoCreate (\r
	328	IN EFI_HANDLE Image,\r
	329	IN EFI_HANDLE Controller,\r
	330	IN UINT8 IpVersion\r
	331	);\r
	332	\r
	333	/**\r
	334	Destroy an IP_IO instance.\r
	335	\r
	336	This function is paired with IpIoCreate(). The IP_IO will be closed first.\r
	337	Resource will be freed afterwards. See IpIoClose().\r
	338	\r
	339	@param[in, out] IpIo The pointer to the IP_IO instance that needs to be\r
	340	destroyed.\r
	341	\r
	342	@retval EFI_SUCCESS The IP_IO instance was destroyed successfully.\r
	343	@retval Others An error condition occurred.\r
	344	\r
	345	**/\r
	346	EFI_STATUS\r
	347	EFIAPI\r
	348	IpIoDestroy (\r
	349	IN OUT IP_IO *IpIo\r
	350	);\r
	351	\r
	352	/**\r
	353	Stop an IP_IO instance.\r
	354	\r
	355	This function is paired with IpIoOpen(). The IP_IO will be unconfigured, and all\r
	356	pending send/receive tokens will be canceled.\r
	357	\r
	358	@param[in, out] IpIo The pointer to the IP_IO instance that needs to stop.\r
	359	\r
	360	@retval EFI_SUCCESS The IP_IO instance stopped successfully.\r
	361	@retval Others Anrror condition occurred.\r
	362	\r
	363	**/\r
	364	EFI_STATUS\r
	365	EFIAPI\r
	366	IpIoStop (\r
	367	IN OUT IP_IO *IpIo\r
	368	);\r
	369	\r
	370	/**\r
	371	Open an IP_IO instance for use.\r
	372	\r
	373	This function is called after IpIoCreate(). It is used for configuring the IP\r
	374	instance and register the callbacks and their context data for sending and\r
	375	receiving IP packets.\r
	376	\r
	377	@param[in, out] IpIo The pointer to an IP_IO instance that needs\r
	378	to open.\r
	379	@param[in] OpenData The configuration data and callbacks for\r
	380	the IP_IO instance.\r
	381	\r
	382	@retval EFI_SUCCESS The IP_IO instance opened with OpenData\r
	383	successfully.\r
	384	@retval EFI_ACCESS_DENIED The IP_IO instance is configured; avoid \r
	385	reopening it.\r
	386	@retval Others An error condition occurred.\r
	387	\r
	388	**/\r
	389	EFI_STATUS\r
	390	EFIAPI\r
	391	IpIoOpen (\r
	392	IN OUT IP_IO *IpIo,\r
	393	IN IP_IO_OPEN_DATA *OpenData\r
	394	);\r
	395	\r
	396	/**\r
	397	Send out an IP packet.\r
	398	\r
	399	This function is called after IpIoOpen(). The data to be sent are wrapped in\r
	400	Pkt. The IP instance wrapped in IpIo is used for sending by default, but can be\r
	401	overriden by Sender. Other sending configurations, such as source address and gateway\r
	402	address, are specified in OverrideData.\r
	403	\r
	404	@param[in, out] IpIo The pointer to an IP_IO instance used for sending IP\r
	405	packet.\r
	406	@param[in, out] Pkt The pointer to the IP packet to be sent.\r
	407	@param[in] Sender Optional. The IP protocol instance used for sending.\r
	408	@param[in] Context The optional context data.\r
	409	@param[in] NotifyData The optional notify data.\r
	410	@param[in] Dest The destination IP address to send this packet to.\r
	411	@param[in] OverrideData The data to override some configuration of the IP\r
	412	instance used for sending.\r
	413	\r
	414	@retval EFI_SUCCESS The operation completed successfully.\r
	415	@retval EFI_NOT_STARTED The IpIo is not configured.\r
	416	@retval EFI_OUT_OF_RESOURCES Failed due to resource limitations.\r
	417	\r
	418	**/\r
	419	EFI_STATUS\r
	420	EFIAPI\r
	421	IpIoSend (\r
	422	IN OUT IP_IO *IpIo,\r
	423	IN OUT NET_BUF *Pkt,\r
	424	IN IP_IO_IP_INFO *Sender OPTIONAL,\r
	425	IN VOID *Context OPTIONAL,\r
	426	IN VOID *NotifyData OPTIONAL,\r
	427	IN EFI_IP_ADDRESS *Dest,\r
	428	IN IP_IO_OVERRIDE *OverrideData OPTIONAL\r
	429	);\r
	430	\r
	431	/**\r
	432	Cancel the IP transmit token that wraps this Packet.\r
	433	\r
	434	@param[in] IpIo The pointer to the IP_IO instance.\r
	435	@param[in] Packet The pointer to the packet of NET_BUF to cancel.\r
	436	\r
	437	**/\r
	438	VOID\r
	439	EFIAPI\r
	440	IpIoCancelTxToken (\r
	441	IN IP_IO *IpIo,\r
	442	IN VOID *Packet\r
	443	);\r
	444	\r
	445	/**\r
	446	Add a new IP instance for sending data.\r
	447	\r
	448	The function is used to add the IP_IO to the IP_IO sending list. The caller\r
	449	can later use IpIoFindSender() to get the IP_IO and call IpIoSend() to send\r
	450	data.\r
	451	\r
	452	@param[in, out] IpIo The pointer to an IP_IO instance to add a new IP\r
	453	instance for sending purposes.\r
	454	\r
	455	@return The pointer to the created IP_IO_IP_INFO structure; NULL if failed.\r
	456	\r
	457	**/\r
	458	IP_IO_IP_INFO *\r
	459	EFIAPI\r
	460	IpIoAddIp (\r
	461	IN OUT IP_IO *IpIo\r
	462	);\r
	463	\r
	464	/**\r
	465	Configure the IP instance of this IpInfo and start the receiving if IpConfigData\r
	466	is not NULL.\r
	467	\r
	468	@param[in, out] IpInfo The pointer to the IP_IO_IP_INFO instance.\r
	469	@param[in, out] IpConfigData The IP4 or IP6 configure data used to configure \r
	470	the IP instance. If NULL, the IP instance is reset.\r
	471	If UseDefaultAddress is set to TRUE, and the configure\r
	472	operation succeeds, the default address information\r
	473	is written back in this IpConfigData.\r
	474	\r
	475	@retval EFI_SUCCESS The IP instance of this IpInfo was configured successfully,\r
	476	or there is no need to reconfigure it.\r
	477	@retval Others The configuration failed.\r
	478	\r
	479	**/\r
	480	EFI_STATUS\r
	481	EFIAPI\r
	482	IpIoConfigIp (\r
	483	IN OUT IP_IO_IP_INFO *IpInfo,\r
	484	IN OUT VOID *IpConfigData OPTIONAL\r
	485	);\r
	486	\r
	487	/**\r
	488	Destroy an IP instance maintained in IpIo->IpList for\r
	489	sending purpose.\r
	490	\r
	491	This function pairs with IpIoAddIp(). The IpInfo is previously created by\r
	492	IpIoAddIp(). The IP_IO_IP_INFO::RefCnt is decremented and the IP instance\r
	493	will be dstroyed if the RefCnt is zero.\r
	494	\r
	495	@param[in] IpIo The pointer to the IP_IO instance.\r
	496	@param[in] IpInfo The pointer to the IpInfo to be removed.\r
	497	\r
	498	**/\r
	499	VOID\r
	500	EFIAPI\r
	501	IpIoRemoveIp (\r
	502	IN IP_IO *IpIo,\r
	503	IN IP_IO_IP_INFO *IpInfo\r
	504	);\r
	505	\r
	506	/**\r
	507	Find the first IP protocol maintained in IpIo whose local\r
	508	address is the same as Src.\r
	509	\r
	510	This function is called when the caller needs the IpIo to send data to the\r
	511	specified Src. The IpIo was added previously by IpIoAddIp().\r
	512	\r
	513	@param[in, out] IpIo The pointer to the pointer of the IP_IO instance.\r
	514	@param[in] IpVersion The version of the IP protocol to use, either\r
	515	IPv4 or IPv6.\r
	516	@param[in] Src The local IP address.\r
	517	\r
	518	@return The pointer to the IP protocol can be used for sending purpose and its local\r
	519	address is the same with Src.\r
	520	\r
	521	**/\r
	522	IP_IO_IP_INFO *\r
	523	EFIAPI\r
	524	IpIoFindSender (\r
	525	IN OUT IP_IO **IpIo,\r
	526	IN UINT8 IpVersion,\r
	527	IN EFI_IP_ADDRESS *Src\r
	528	);\r
	529	\r
	530	/**\r
	531	Get the ICMP error map information.\r
	532	\r
	533	The ErrorStatus will be returned. The IsHard and Notify are optional. If they\r
	534	are not NULL, this routine will fill them.\r
	535	\r
	536	@param[in] IcmpError IcmpError Type.\r
	537	@param[in] IpVersion The version of the IP protocol to use,\r
	538	either IPv4 or IPv6. \r
	539	@param[out] IsHard If TRUE, indicates that it is a hard error.\r
	540	@param[out] Notify If TRUE, SockError needs to be notified.\r
	541	\r
	542	@return The ICMP Error Status, such as EFI_NETWORK_UNREACHABLE.\r
	543	\r
	544	**/\r
	545	EFI_STATUS\r
	546	EFIAPI\r
	547	IpIoGetIcmpErrStatus (\r
	548	IN UINT8 IcmpError,\r
	549	IN UINT8 IpVersion,\r
	550	OUT BOOLEAN *IsHard OPTIONAL,\r
	551	OUT BOOLEAN *Notify OPTIONAL\r
	552	);\r
	553	\r
	554	/**\r
	555	Refresh the remote peer's Neighbor Cache entries.\r
	556	\r
	557	This function is called when the caller needs the IpIo to refresh the existing\r
	558	IPv6 neighbor cache entries since the neighbor is considered reachable by the \r
	559	node has recently received a confirmation that packets sent recently to the \r
	560	neighbor were received by its IP layer. \r
	561	\r
	562	@param[in] IpIo The pointer to an IP_IO instance\r
	563	@param[in] Neighbor The IP address of the neighbor\r
	564	@param[in] Timeout The time in 100-ns units that this entry will\r
	565	remain in the neighbor cache. A value of \r
	566	zero means that the entry is permanent. \r
	567	A value of non-zero means that the entry is \r
	568	dynamic and will be deleted after Timeout.\r
	569	\r
	570	@retval EFI_SUCCESS The operation completed successfully.\r
	571	@retval EFI_NOT_STARTED The IpIo is not configured.\r
	572	@retval EFI_INVALID_PARAMETER The Neighbor Address is invalid.\r
	573	@retval EFI_NOT_FOUND The neighbor cache entry is not in the \r
	574	neighbor table. \r
	575	@retval EFI_OUT_OF_RESOURCES Failed due to resource limitations.\r
	576	\r
	577	**/\r
	578	EFI_STATUS\r
	579	IpIoRefreshNeighbor (\r
	580	IN IP_IO *IpIo,\r
	581	IN EFI_IP_ADDRESS *Neighbor,\r
	582	IN UINT32 Timeout \r
	583	);\r
	584	\r
	585	#endif\r
	586	\r