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468 lines
12 KiB
C
468 lines
12 KiB
C
/** @file
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Miscellaneous definitions for iSCSI driver.
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Copyright (c) 2004 - 2018, 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 _ISCSI_MISC_H_
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#define _ISCSI_MISC_H_
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typedef struct _ISCSI_DRIVER_DATA ISCSI_DRIVER_DATA;
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///
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/// IPv4 Device Path Node Length
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///
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#define IP4_NODE_LEN_NEW_VERSIONS 27
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///
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/// IPv6 Device Path Node Length
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///
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#define IP6_NODE_LEN_OLD_VERSIONS 43
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#define IP6_NODE_LEN_NEW_VERSIONS 60
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///
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/// The ignored field StaticIpAddress's offset in old IPv6 Device Path
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///
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#define IP6_OLD_IPADDRESS_OFFSET 42
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#pragma pack(1)
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typedef struct _ISCSI_SESSION_CONFIG_NVDATA {
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UINT16 TargetPort;
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UINT8 Enabled;
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UINT8 IpMode;
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EFI_IP_ADDRESS LocalIp;
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EFI_IPv4_ADDRESS SubnetMask;
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EFI_IP_ADDRESS Gateway;
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BOOLEAN InitiatorInfoFromDhcp;
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BOOLEAN TargetInfoFromDhcp;
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CHAR8 TargetName[ISCSI_NAME_MAX_SIZE];
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EFI_IP_ADDRESS TargetIp;
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UINT8 PrefixLength;
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UINT8 BootLun[8];
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UINT16 ConnectTimeout; ///< timout value in milliseconds.
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UINT8 ConnectRetryCount;
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UINT8 IsId[6];
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BOOLEAN RedirectFlag;
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UINT16 OriginalTargetPort; // The port of proxy/virtual target.
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EFI_IP_ADDRESS OriginalTargetIp; // The address of proxy/virtual target.
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BOOLEAN DnsMode; // Flag indicate whether the Target address is expressed as URL format.
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CHAR8 TargetUrl[ISCSI_TARGET_URI_MAX_SIZE];
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} ISCSI_SESSION_CONFIG_NVDATA;
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#pragma pack()
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/**
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Calculate the prefix length of the IPv4 subnet mask.
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@param[in] SubnetMask The IPv4 subnet mask.
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@return The prefix length of the subnet mask.
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@retval 0 Other errors as indicated.
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**/
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UINT8
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IScsiGetSubnetMaskPrefixLength (
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IN EFI_IPv4_ADDRESS *SubnetMask
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);
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/**
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Convert the hexadecimal encoded LUN string into the 64-bit LUN.
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@param[in] Str The hexadecimal encoded LUN string.
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@param[out] Lun Storage to return the 64-bit LUN.
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@retval EFI_SUCCESS The 64-bit LUN is stored in Lun.
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@retval EFI_INVALID_PARAMETER The string is malformatted.
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**/
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EFI_STATUS
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IScsiAsciiStrToLun (
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IN CHAR8 *Str,
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OUT UINT8 *Lun
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);
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/**
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Convert the 64-bit LUN into the hexadecimal encoded LUN string.
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@param[in] Lun The 64-bit LUN.
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@param[out] String The storage to return the hexadecimal encoded LUN string.
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**/
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VOID
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IScsiLunToUnicodeStr (
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IN UINT8 *Lun,
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OUT CHAR16 *String
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);
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/**
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Convert the mac address into a hexadecimal encoded "-" seperated string.
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@param[in] Mac The mac address.
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@param[in] Len Length in bytes of the mac address.
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@param[in] VlanId VLAN ID of the network device.
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@param[out] Str The storage to return the mac string.
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**/
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VOID
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IScsiMacAddrToStr (
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IN EFI_MAC_ADDRESS *Mac,
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IN UINT32 Len,
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IN UINT16 VlanId,
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OUT CHAR16 *Str
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);
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/**
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Convert the formatted IP address into the binary IP address.
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@param[in] Str The UNICODE string.
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@param[in] IpMode Indicates whether the IP address is v4 or v6.
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@param[out] Ip The storage to return the ASCII string.
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@retval EFI_SUCCESS The binary IP address is returned in Ip.
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@retval EFI_INVALID_PARAMETER The IP string is malformatted or IpMode is
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invalid.
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**/
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EFI_STATUS
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IScsiAsciiStrToIp (
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IN CHAR8 *Str,
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IN UINT8 IpMode,
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OUT EFI_IP_ADDRESS *Ip
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);
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/**
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Convert the binary encoded buffer into a hexadecimal encoded string.
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@param[in] BinBuffer The buffer containing the binary data.
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@param[in] BinLength Length of the binary buffer.
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@param[in, out] HexStr Pointer to the string.
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@param[in, out] HexLength The length of the string.
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@retval EFI_SUCCESS The binary data is converted to the hexadecimal string
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and the length of the string is updated.
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@retval EFI_BUFFER_TOO_SMALL The string is too small.
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@retval EFI_INVALID_PARAMETER The IP string is malformatted.
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**/
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EFI_STATUS
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IScsiBinToHex (
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IN UINT8 *BinBuffer,
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IN UINT32 BinLength,
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IN OUT CHAR8 *HexStr,
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IN OUT UINT32 *HexLength
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);
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/**
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Convert the hexadecimal string into a binary encoded buffer.
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@param[in, out] BinBuffer The binary buffer.
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@param[in, out] BinLength Length of the binary buffer.
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@param[in] HexStr The hexadecimal string.
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@retval EFI_SUCCESS The hexadecimal string is converted into a binary
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encoded buffer.
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@retval EFI_BUFFER_TOO_SMALL The binary buffer is too small to hold the converted data.
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**/
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EFI_STATUS
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IScsiHexToBin (
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IN OUT UINT8 *BinBuffer,
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IN OUT UINT32 *BinLength,
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IN CHAR8 *HexStr
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);
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/**
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Convert the decimal-constant string or hex-constant string into a numerical value.
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@param[in] Str String in decimal or hex.
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@return The numerical value.
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**/
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UINTN
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IScsiNetNtoi (
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IN CHAR8 *Str
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);
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/**
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Generate random numbers.
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@param[in, out] Rand The buffer to contain random numbers.
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@param[in] RandLength The length of the Rand buffer.
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**/
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VOID
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IScsiGenRandom (
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IN OUT UINT8 *Rand,
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IN UINTN RandLength
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);
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/**
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Record the NIC information in a global structure.
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@param[in] Controller The handle of the controller.
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@param[in] Image Handle of the image.
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@retval EFI_SUCCESS The operation is completed.
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@retval EFI_OUT_OF_RESOURCES Do not have sufficient resource to finish this
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operation.
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**/
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EFI_STATUS
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IScsiAddNic (
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IN EFI_HANDLE Controller,
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IN EFI_HANDLE Image
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);
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/**
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Delete the recorded NIC information from a global structure. Also delete corresponding
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attempts.
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@param[in] Controller The handle of the controller.
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@retval EFI_SUCCESS The operation completed.
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@retval EFI_NOT_FOUND The NIC information to be deleted is not recorded.
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**/
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EFI_STATUS
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IScsiRemoveNic (
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IN EFI_HANDLE Controller
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);
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/**
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Create and initialize the Attempts.
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@param[in] AttemptNum The number of Attempts will be created.
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@retval EFI_SUCCESS The Attempts have been created successfully.
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@retval Others Failed to create the Attempt.
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**/
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EFI_STATUS
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IScsiCreateAttempts (
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IN UINTN AttemptNum
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);
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/**
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Create the iSCSI configuration Keywords for each attempt.
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@param[in] KeywordNum The number Sets of Keywords will be created.
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@retval EFI_SUCCESS The operation is completed.
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@retval Others Failed to create the Keywords.
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**/
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EFI_STATUS
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IScsiCreateKeywords (
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IN UINTN KeywordNum
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);
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/**
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Free the attempt configure data variable.
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**/
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VOID
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IScsiCleanAttemptVariable (
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IN VOID
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);
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/**
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Get the recorded NIC information from a global structure by the Index.
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@param[in] NicIndex The index indicates the position of NIC info.
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@return Pointer to the NIC info or NULL if not found.
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**/
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ISCSI_NIC_INFO *
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IScsiGetNicInfoByIndex (
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IN UINT8 NicIndex
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);
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/**
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Get the NIC's PCI location and return it according to the composited
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format defined in iSCSI Boot Firmware Table.
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@param[in] Controller The handle of the controller.
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@param[out] Bus The bus number.
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@param[out] Device The device number.
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@param[out] Function The function number.
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@return The composited representation of the NIC PCI location.
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**/
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UINT16
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IScsiGetNICPciLocation (
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IN EFI_HANDLE Controller,
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OUT UINTN *Bus,
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OUT UINTN *Device,
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OUT UINTN *Function
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);
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/**
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Read the EFI variable (VendorGuid/Name) and return a dynamically allocated
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buffer, and the size of the buffer. If failure, return NULL.
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@param[in] Name String part of EFI variable name.
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@param[in] VendorGuid GUID part of EFI variable name.
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@param[out] VariableSize Returns the size of the EFI variable that was read.
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@return Dynamically allocated memory that contains a copy of the EFI variable.
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@return Caller is responsible freeing the buffer.
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@retval NULL Variable was not read.
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**/
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VOID *
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IScsiGetVariableAndSize (
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IN CHAR16 *Name,
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IN EFI_GUID *VendorGuid,
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OUT UINTN *VariableSize
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);
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/**
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Create the iSCSI driver data.
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@param[in] Image The handle of the driver image.
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@param[in] Controller The handle of the controller.
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@return The iSCSI driver data created.
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@retval NULL Other errors as indicated.
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**/
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ISCSI_DRIVER_DATA *
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IScsiCreateDriverData (
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IN EFI_HANDLE Image,
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IN EFI_HANDLE Controller
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);
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/**
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Clean the iSCSI driver data.
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@param[in] Private The iSCSI driver data.
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@retval EFI_SUCCES The clean operation is successful.
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@retval Others Other errors as indicated.
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**/
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EFI_STATUS
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IScsiCleanDriverData (
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IN ISCSI_DRIVER_DATA *Private
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);
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/**
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Check wheather the Controller handle is configured to use DHCP protocol.
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@param[in] Controller The handle of the controller.
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@param[in] IpVersion IP_VERSION_4 or IP_VERSION_6.
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@retval TRUE The handle of the controller need the Dhcp protocol.
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@retval FALSE The handle of the controller does not need the Dhcp protocol.
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**/
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BOOLEAN
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IScsiDhcpIsConfigured (
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IN EFI_HANDLE Controller,
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IN UINT8 IpVersion
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);
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/**
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Check wheather the Controller handle is configured to use DNS protocol.
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@param[in] Controller The handle of the controller.
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@retval TRUE The handle of the controller need the DNS protocol.
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@retval FALSE The handle of the controller does not need the DNS protocol.
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**/
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BOOLEAN
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IScsiDnsIsConfigured (
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IN EFI_HANDLE Controller
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);
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/**
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Get the various configuration data of this iSCSI instance.
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@param[in] Private The iSCSI driver data.
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@retval EFI_SUCCESS Obtained the configuration of this instance.
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@retval EFI_ABORTED The operation was aborted.
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@retval Others Other errors as indicated.
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**/
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EFI_STATUS
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IScsiGetConfigData (
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IN ISCSI_DRIVER_DATA *Private
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);
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/**
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Get the device path of the iSCSI tcp connection and update it.
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@param[in] Session The iSCSI session data.
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@return The updated device path.
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@retval NULL Other errors as indicated.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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IScsiGetTcpConnDevicePath (
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IN ISCSI_SESSION *Session
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);
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/**
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Abort the session when the transition from BS to RT is initiated.
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@param[in] Event The event signaled.
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@param[in] Context The iSCSI driver data.
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**/
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VOID
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EFIAPI
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IScsiOnExitBootService (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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/**
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Tests whether a controller handle is being managed by IScsi driver.
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This function tests whether the driver specified by DriverBindingHandle is
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currently managing the controller specified by ControllerHandle. This test
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is performed by evaluating if the the protocol specified by ProtocolGuid is
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present on ControllerHandle and is was opened by DriverBindingHandle and Nic
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Device handle with an attribute of EFI_OPEN_PROTOCOL_BY_DRIVER.
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If ProtocolGuid is NULL, then ASSERT().
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@param ControllerHandle A handle for a controller to test.
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@param DriverBindingHandle Specifies the driver binding handle for the
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driver.
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@param ProtocolGuid Specifies the protocol that the driver specified
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by DriverBindingHandle opens in its Start()
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function.
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@retval EFI_SUCCESS ControllerHandle is managed by the driver
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specified by DriverBindingHandle.
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@retval EFI_UNSUPPORTED ControllerHandle is not managed by the driver
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specified by DriverBindingHandle.
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**/
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EFI_STATUS
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EFIAPI
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IScsiTestManagedDevice (
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IN EFI_HANDLE ControllerHandle,
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IN EFI_HANDLE DriverBindingHandle,
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IN EFI_GUID *ProtocolGuid
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);
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#endif
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