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/** @file
Dhcp6 support functions declaration.
Copyright (c) 2009 - 2012, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __EFI_DHCP6_UTILITY_H__
#define __EFI_DHCP6_UTILITY_H__
#define DHCP6_10_BIT_MASK 0x3ff
#define DHCP6_DAD_ADDITIONAL_DELAY 30000000 // 3 seconds
/**
Generate client Duid in the format of Duid-llt.
@param[in] Mode The pointer to the mode of SNP.
@retval NULL if failed to generate client Id.
@retval Others The pointer to the new client id.
**/
EFI_DHCP6_DUID *
Dhcp6GenerateClientId (
IN EFI_SIMPLE_NETWORK_MODE *Mode
);
/**
Copy the Dhcp6 configure data.
@param[in] DstCfg The pointer to the destination configure data.
@param[in] SorCfg The pointer to the source configure data.
@retval EFI_SUCCESS Copy the content from SorCfg from DstCfg successfully.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
**/
EFI_STATUS
Dhcp6CopyConfigData (
IN EFI_DHCP6_CONFIG_DATA *DstCfg,
IN EFI_DHCP6_CONFIG_DATA *SorCfg
);
/**
Clean up the configure data.
@param[in, out] CfgData The pointer to the configure data.
**/
VOID
Dhcp6CleanupConfigData (
IN OUT EFI_DHCP6_CONFIG_DATA *CfgData
);
/**
Clean up the mode data.
@param[in, out] ModeData The pointer to the mode data.
**/
VOID
Dhcp6CleanupModeData (
IN OUT EFI_DHCP6_MODE_DATA *ModeData
);
/**
Calculate the expire time by the algorithm defined in rfc.
@param[in] Base The base value of the time.
@param[in] IsFirstRt If TRUE, it is the first time to calculate expire time.
@param[in] NeedSigned If TRUE, the signed factor is needed.
@return Expire The calculated result for the new expire time.
**/
UINT32
Dhcp6CalculateExpireTime (
IN UINT32 Base,
IN BOOLEAN IsFirstRt,
IN BOOLEAN NeedSigned
);
/**
Calculate the lease time by the algorithm defined in rfc.
@param[in] IaCb The pointer to the Ia control block.
**/
VOID
Dhcp6CalculateLeaseTime (
IN DHCP6_IA_CB *IaCb
);
/**
Check whether the addresses are all included by the configured Ia.
@param[in] Ia The pointer to the Ia.
@param[in] AddressCount The number of addresses.
@param[in] Addresses The pointer to the addresses buffer.
@retval EFI_SUCCESS The addresses are all included by the configured IA.
@retval EFI_NOT_FOUND The addresses are not included by the configured IA.
**/
EFI_STATUS
Dhcp6CheckAddress (
IN EFI_DHCP6_IA *Ia,
IN UINT32 AddressCount,
IN EFI_IPv6_ADDRESS *Addresses
);
/**
Deprive the addresses from current Ia, and generate another eliminated Ia.
@param[in] Ia The pointer to the Ia.
@param[in] AddressCount The number of addresses.
@param[in] Addresses The pointer to the addresses buffer.
@retval NULL If failed to generate the deprived Ia.
@retval others The pointer to the deprived Ia.
**/
EFI_DHCP6_IA *
Dhcp6DepriveAddress (
IN EFI_DHCP6_IA *Ia,
IN UINT32 AddressCount,
IN EFI_IPv6_ADDRESS *Addresses
);
/**
The dummy ext buffer free callback routine.
@param[in] Arg The pointer to the parameter.
**/
VOID
EFIAPI
Dhcp6DummyExtFree (
IN VOID *Arg
);
/**
The callback routine once message transmitted.
@param[in] Wrap The pointer to the received net buffer.
@param[in] EndPoint The pointer to the udp end point.
@param[in] IoStatus The return status from udp io.
@param[in] Context The opaque parameter to the function.
**/
VOID
EFIAPI
Dhcp6OnTransmitted (
IN NET_BUF *Wrap,
IN UDP_END_POINT *EndPoint,
IN EFI_STATUS IoStatus,
IN VOID *Context
);
/**
Append the option to Buf, update the length of packet, and move Buf to the end.
@param[in, out] Packet A pointer to the packet, on success Packet->Length
will be updated.
@param[in, out] PacketCursor The pointer in the packet, on success PacketCursor
will be moved to the end of the option.
@param[in] OptType The option type.
@param[in] OptLen The length of option contents.
@param[in] Data The pointer to the option content.
@retval EFI_INVALID_PARAMETER An argument provided to the function was invalid
@retval EFI_BUFFER_TOO_SMALL The buffer is too small to append the option.
@retval EFI_SUCCESS The option is appended successfully.
**/
EFI_STATUS
Dhcp6AppendOption (
IN OUT EFI_DHCP6_PACKET *Packet,
IN OUT UINT8 **PacketCursor,
IN UINT16 OptType,
IN UINT16 OptLen,
IN UINT8 *Data
);
/**
Append the appointed Ia option to Buf, update the Ia option length, and move Buf
to the end of the option.
@param[in, out] Packet A pointer to the packet, on success Packet->Length
will be updated.
@param[in, out] PacketCursor The pointer in the packet, on success PacketCursor
will be moved to the end of the option.
@param[in] Ia The pointer to the Ia.
@param[in] T1 The time of T1.
@param[in] T2 The time of T2.
@param[in] MessageType Message type of DHCP6 package.
@retval EFI_INVALID_PARAMETER An argument provided to the function was invalid
@retval EFI_BUFFER_TOO_SMALL The buffer is too small to append the option.
@retval EFI_SUCCESS The option is appended successfully.
**/
EFI_STATUS
Dhcp6AppendIaOption (
IN OUT EFI_DHCP6_PACKET *Packet,
IN OUT UINT8 **PacketCursor,
IN EFI_DHCP6_IA *Ia,
IN UINT32 T1,
IN UINT32 T2,
IN UINT32 MessageType
);
/**
Append the appointed Elapsed time option to Buf, and move Buf to the end.
@param[in, out] Packet A pointer to the packet, on success Packet->Length
@param[in, out] PacketCursor The pointer in the packet, on success PacketCursor
will be moved to the end of the option.
@param[in] Instance The pointer to the Dhcp6 instance.
@param[out] Elapsed The pointer to the elapsed time value in
the generated packet.
@retval EFI_INVALID_PARAMETER An argument provided to the function was invalid
@retval EFI_BUFFER_TOO_SMALL The buffer is too small to append the option.
@retval EFI_SUCCESS The option is appended successfully.
**/
EFI_STATUS
Dhcp6AppendETOption (
IN OUT EFI_DHCP6_PACKET *Packet,
IN OUT UINT8 **PacketCursor,
IN DHCP6_INSTANCE *Instance,
OUT UINT16 **Elapsed
);
/**
Set the elapsed time based on the given instance and the pointer to the
elapsed time option.
@retval EFI_INVALID_PARAMETER An argument provided to the function was invalid
@retval EFI_BUFFER_TOO_SMALL The buffer is too small to append the option.
@retval EFI_SUCCESS The option is appended successfully.
**/
VOID
SetElapsedTime (
IN UINT16 *Elapsed,
IN DHCP6_INSTANCE *Instance
);
/**
Seek the address of the first byte of the option header.
@param[in] Buf The pointer to buffer.
@param[in] SeekLen The length to seek.
@param[in] OptType The option type.
@retval NULL If failed to seek the option.
@retval others The position to the option.
**/
UINT8 *
Dhcp6SeekOption (
IN UINT8 *Buf,
IN UINT32 SeekLen,
IN UINT16 OptType
);
/**
Seek the address of the first byte of the Ia option header.
@param[in] Buf The pointer to the buffer.
@param[in] SeekLen The length to seek.
@param[in] IaDesc The pointer to the Ia descriptor.
@retval NULL If failed to seek the Ia option.
@retval others The position to the Ia option.
**/
UINT8 *
Dhcp6SeekIaOption (
IN UINT8 *Buf,
IN UINT32 SeekLen,
IN EFI_DHCP6_IA_DESCRIPTOR *IaDesc
);
/**
Parse the address option and update the address info.
@param[in] CurrentIa The pointer to the Ia Address in control block.
@param[in] IaInnerOpt The pointer to the buffer.
@param[in] IaInnerLen The length to parse.
@param[out] AddrNum The number of addresses.
@param[in, out] AddrBuf The pointer to the address buffer.
**/
VOID
Dhcp6ParseAddrOption (
IN EFI_DHCP6_IA *CurrentIa,
IN UINT8 *IaInnerOpt,
IN UINT16 IaInnerLen,
OUT UINT32 *AddrNum,
IN OUT EFI_DHCP6_IA_ADDRESS *AddrBuf
);
/**
Create a control block for the Ia according to the corresponding options.
@param[in] Instance The pointer to DHCP6 Instance.
@param[in] IaInnerOpt The pointer to the inner options in the Ia option.
@param[in] IaInnerLen The length of all the inner options in the Ia option.
@param[in] T1 T1 time in the Ia option.
@param[in] T2 T2 time in the Ia option.
@retval EFI_NOT_FOUND No valid IA option is found.
@retval EFI_SUCCESS Create an IA control block successfully.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
@retval EFI_DEVICE_ERROR An unexpected error.
**/
EFI_STATUS
Dhcp6GenerateIaCb (
IN DHCP6_INSTANCE *Instance,
IN UINT8 *IaInnerOpt,
IN UINT16 IaInnerLen,
IN UINT32 T1,
IN UINT32 T2
);
/**
Cache the current IA configuration information.
@param[in] Instance The pointer to DHCP6 Instance.
@retval EFI_SUCCESS Cache the current IA successfully.
@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
**/
EFI_STATUS
Dhcp6CacheIa (
IN DHCP6_INSTANCE *Instance
);
/**
Append CacheIa to the current IA. Meanwhile, clear CacheIa.ValidLifetime to 0.
@param[in] Instance The pointer to DHCP6 instance.
**/
VOID
Dhcp6AppendCacheIa (
IN DHCP6_INSTANCE *Instance
);
/**
Calculate the Dhcp6 get mapping timeout by adding additional delay to the IP6 DAD transmits count.
@param[in] Ip6Cfg The pointer to Ip6 config protocol.
@param[out] TimeOut The time out value in 100ns units.
@retval EFI_INVALID_PARAMETER Input parameters are invalid.
@retval EFI_SUCCESS Calculate the time out value successfully.
**/
EFI_STATUS
Dhcp6GetMappingTimeOut (
IN EFI_IP6_CONFIG_PROTOCOL *Ip6Cfg,
OUT UINTN *TimeOut
);
#endif
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