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