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501793fad4
Signed-off-by: tye Reviewed-by: niruiyu Adopt SasEx and new IPv6 device path for DevicePathDxe driver. Signed-off-by: niruiyu Reviewed-by: erictian git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12574 6f19259b-4bc3-4df7-8a09-765794883524
802 lines
20 KiB
C
802 lines
20 KiB
C
/** @file
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Miscellaneous routines for iSCSI driver.
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Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "IScsiImpl.h"
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GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 IScsiHexString[] = "0123456789ABCDEFabcdef";
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/**
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Removes (trims) specified leading and trailing characters from a string.
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@param[in, out] Str Pointer to the null-terminated string to be trimmed. On return,
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Str will hold the trimmed string.
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@param[in] CharC Character will be trimmed from str.
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**/
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VOID
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StrTrim (
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IN OUT CHAR16 *Str,
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IN CHAR16 CharC
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)
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{
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CHAR16 *Pointer1;
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CHAR16 *Pointer2;
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if (*Str == 0) {
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return;
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}
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//
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// Trim off the leading and trailing characters c
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//
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for (Pointer1 = Str; (*Pointer1 != 0) && (*Pointer1 == CharC); Pointer1++) {
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;
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}
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Pointer2 = Str;
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if (Pointer2 == Pointer1) {
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while (*Pointer1 != 0) {
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Pointer2++;
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Pointer1++;
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}
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} else {
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while (*Pointer1 != 0) {
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*Pointer2 = *Pointer1;
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Pointer1++;
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Pointer2++;
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}
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*Pointer2 = 0;
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}
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for (Pointer1 = Str + StrLen(Str) - 1; Pointer1 >= Str && *Pointer1 == CharC; Pointer1--) {
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;
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}
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if (Pointer1 != Str + StrLen(Str) - 1) {
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*(Pointer1 + 1) = 0;
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}
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}
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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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UINT8 Len;
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UINT32 ReverseMask;
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//
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// The SubnetMask is in network byte order.
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//
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ReverseMask = (SubnetMask->Addr[0] << 24) | (SubnetMask->Addr[1] << 16) | (SubnetMask->Addr[2] << 8) | (SubnetMask->Addr[3]);
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//
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// Reverse it.
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//
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ReverseMask = ~ReverseMask;
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if ((ReverseMask & (ReverseMask + 1)) != 0) {
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return 0;
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}
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Len = 0;
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while (ReverseMask != 0) {
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ReverseMask = ReverseMask >> 1;
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Len++;
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}
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return (UINT8) (32 - Len);
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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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UINTN Index, IndexValue, IndexNum, SizeStr;
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CHAR8 TemStr[2];
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UINT8 TemValue;
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UINT16 Value[4];
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ZeroMem (Lun, 8);
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ZeroMem (TemStr, 2);
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ZeroMem ((UINT8 *) Value, sizeof (Value));
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SizeStr = AsciiStrLen (Str);
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IndexValue = 0;
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IndexNum = 0;
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for (Index = 0; Index < SizeStr; Index ++) {
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TemStr[0] = Str[Index];
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TemValue = (UINT8) AsciiStrHexToUint64 (TemStr);
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if (TemValue == 0 && TemStr[0] != '0') {
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if ((TemStr[0] != '-') || (IndexNum == 0)) {
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//
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// Invalid Lun Char
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//
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return EFI_INVALID_PARAMETER;
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}
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}
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if ((TemValue == 0) && (TemStr[0] == '-')) {
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//
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// Next Lun value
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//
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if (++IndexValue >= 4) {
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//
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// Max 4 Lun value
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//
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return EFI_INVALID_PARAMETER;
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}
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//
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// Restart str index for the next lun value
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//
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IndexNum = 0;
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continue;
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}
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if (++IndexNum > 4) {
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//
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// Each Lun Str can't exceed size 4, because it will be as UINT16 value
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//
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return EFI_INVALID_PARAMETER;
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}
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//
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// Combine UINT16 value
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//
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Value[IndexValue] = (UINT16) ((Value[IndexValue] << 4) + TemValue);
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}
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for (Index = 0; Index <= IndexValue; Index ++) {
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*((UINT16 *) &Lun[Index * 2]) = HTONS (Value[Index]);
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}
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return EFI_SUCCESS;
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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] Str 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 *Str
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)
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{
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UINTN Index;
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CHAR16 *TempStr;
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TempStr = Str;
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for (Index = 0; Index < 4; Index++) {
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if ((Lun[2 * Index] | Lun[2 * Index + 1]) == 0) {
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StrCpy (TempStr, L"0-");
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} else {
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TempStr[0] = (CHAR16) IScsiHexString[Lun[2 * Index] >> 4];
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TempStr[1] = (CHAR16) IScsiHexString[Lun[2 * Index] & 0x0F];
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TempStr[2] = (CHAR16) IScsiHexString[Lun[2 * Index + 1] >> 4];
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TempStr[3] = (CHAR16) IScsiHexString[Lun[2 * Index + 1] & 0x0F];
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TempStr[4] = L'-';
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TempStr[5] = 0;
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StrTrim (TempStr, L'0');
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}
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TempStr += StrLen (TempStr);
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}
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Str[StrLen (Str) - 1] = 0;
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for (Index = StrLen (Str) - 1; Index > 1; Index = Index - 2) {
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if ((Str[Index] == L'0') && (Str[Index - 1] == L'-')) {
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Str[Index - 1] = 0;
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} else {
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break;
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}
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}
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}
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/**
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Convert the ASCII string into a UNICODE string.
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@param[in] Source The ASCII string.
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@param[out] Destination The storage to return the UNICODE string.
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@return CHAR16 * Pointer to the UNICODE string.
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**/
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CHAR16 *
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IScsiAsciiStrToUnicodeStr (
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IN CHAR8 *Source,
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OUT CHAR16 *Destination
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)
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{
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ASSERT (Destination != NULL);
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ASSERT (Source != NULL);
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while (*Source != '\0') {
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*(Destination++) = (CHAR16) *(Source++);
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}
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*Destination = '\0';
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return Destination;
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}
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/**
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Convert the UNICODE string into an ASCII string.
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@param[in] Source The UNICODE string.
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@param[out] Destination The storage to return the ASCII string.
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@return CHAR8 * Pointer to the ASCII string.
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**/
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CHAR8 *
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IScsiUnicodeStrToAsciiStr (
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IN CHAR16 *Source,
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OUT CHAR8 *Destination
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)
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{
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ASSERT (Destination != NULL);
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ASSERT (Source != NULL);
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while (*Source != '\0') {
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//
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// If any Unicode characters in Source contain
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// non-zero value in the upper 8 bits, then ASSERT().
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//
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ASSERT (*Source < 0x100);
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*(Destination++) = (CHAR8) *(Source++);
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}
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*Destination = '\0';
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return Destination;
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}
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/**
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Convert the decimal dotted IPv4 address into the binary IPv4 address.
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@param[in] Str The UNICODE string.
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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.
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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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OUT EFI_IPv4_ADDRESS *Ip
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)
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{
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UINTN Index;
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UINTN Number;
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Index = 0;
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while (*Str != 0) {
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if (Index > 3) {
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return EFI_INVALID_PARAMETER;
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}
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Number = 0;
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while (NET_IS_DIGIT (*Str)) {
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Number = Number * 10 + (*Str - '0');
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Str++;
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}
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if (Number > 0xFF) {
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return EFI_INVALID_PARAMETER;
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}
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Ip->Addr[Index] = (UINT8) Number;
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if ((*Str != '\0') && (*Str != '.')) {
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//
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// The current character should be either the NULL terminator or
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// the dot delimiter.
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//
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return EFI_INVALID_PARAMETER;
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}
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if (*Str == '.') {
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//
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// Skip the delimiter.
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//
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Str++;
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}
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Index++;
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}
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if (Index != 4) {
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return EFI_INVALID_PARAMETER;
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}
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return EFI_SUCCESS;
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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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UINT32 Index;
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CHAR16 *String;
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for (Index = 0; Index < Len; Index++) {
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Str[3 * Index] = (CHAR16) IScsiHexString[(Mac->Addr[Index] >> 4) & 0x0F];
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Str[3 * Index + 1] = (CHAR16) IScsiHexString[Mac->Addr[Index] & 0x0F];
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Str[3 * Index + 2] = L'-';
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}
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String = &Str[3 * Index - 1] ;
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if (VlanId != 0) {
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String += UnicodeSPrint (String, 6 * sizeof (CHAR16), L"\\%04x", (UINTN) VlanId);
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}
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*String = L'\0';
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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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UINTN Index;
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if ((HexStr == NULL) || (BinBuffer == NULL) || (BinLength == 0)) {
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return EFI_INVALID_PARAMETER;
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}
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if (((*HexLength) - 3) < BinLength * 2) {
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*HexLength = BinLength * 2 + 3;
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return EFI_BUFFER_TOO_SMALL;
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}
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*HexLength = BinLength * 2 + 3;
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//
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// Prefix for Hex String
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//
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HexStr[0] = '0';
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HexStr[1] = 'x';
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for (Index = 0; Index < BinLength; Index++) {
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HexStr[Index * 2 + 2] = IScsiHexString[BinBuffer[Index] >> 4];
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HexStr[Index * 2 + 3] = IScsiHexString[BinBuffer[Index] & 0x0F];
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}
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HexStr[Index * 2 + 2] = '\0';
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return EFI_SUCCESS;
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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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UINTN Index;
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UINTN Length;
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UINT8 Digit;
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CHAR8 TemStr[2];
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ZeroMem (TemStr, sizeof (TemStr));
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//
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// Find out how many hex characters the string has.
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//
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if ((HexStr[0] == '0') && ((HexStr[1] == 'x') || (HexStr[1] == 'X'))) {
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HexStr += 2;
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}
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Length = AsciiStrLen (HexStr);
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for (Index = 0; Index < Length; Index ++) {
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TemStr[0] = HexStr[Index];
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Digit = (UINT8) AsciiStrHexToUint64 (TemStr);
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if (Digit == 0 && TemStr[0] != '0') {
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//
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// Invalid Lun Char
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//
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break;
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}
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if ((Index & 1) == 0) {
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BinBuffer [Index/2] = Digit;
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} else {
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BinBuffer [Index/2] = (UINT8) ((BinBuffer [Index/2] << 4) + Digit);
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}
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}
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*BinLength = (UINT32) ((Index + 1)/2);
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return EFI_SUCCESS;
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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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UINT32 Random;
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while (RandLength > 0) {
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Random = NET_RANDOM (NetRandomInitSeed ());
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*Rand++ = (UINT8) (Random);
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RandLength--;
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}
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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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ISCSI_DRIVER_DATA *Private;
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EFI_STATUS Status;
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Private = AllocateZeroPool (sizeof (ISCSI_DRIVER_DATA));
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if (Private == NULL) {
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return NULL;
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}
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Private->Signature = ISCSI_DRIVER_DATA_SIGNATURE;
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Private->Image = Image;
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Private->Controller = Controller;
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//
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// Create an event to be signal when the BS to RT transition is triggerd so
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// as to abort the iSCSI session.
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//
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_CALLBACK,
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IScsiOnExitBootService,
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Private,
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&gEfiEventExitBootServicesGuid,
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&Private->ExitBootServiceEvent
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);
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if (EFI_ERROR (Status)) {
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FreePool (Private);
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return NULL;
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}
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CopyMem(&Private->IScsiExtScsiPassThru, &gIScsiExtScsiPassThruProtocolTemplate, sizeof(EFI_EXT_SCSI_PASS_THRU_PROTOCOL));
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//
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// 0 is designated to the TargetId, so use another value for the AdapterId.
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//
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Private->ExtScsiPassThruMode.AdapterId = 2;
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Private->ExtScsiPassThruMode.Attributes = EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL | EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL;
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Private->ExtScsiPassThruMode.IoAlign = 4;
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Private->IScsiExtScsiPassThru.Mode = &Private->ExtScsiPassThruMode;
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//
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// Install the Ext SCSI PASS THRU protocol.
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//
|
|
Status = gBS->InstallProtocolInterface (
|
|
&Private->ExtScsiPassThruHandle,
|
|
&gEfiExtScsiPassThruProtocolGuid,
|
|
EFI_NATIVE_INTERFACE,
|
|
&Private->IScsiExtScsiPassThru
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
gBS->CloseEvent (Private->ExitBootServiceEvent);
|
|
FreePool (Private);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
IScsiSessionInit (&Private->Session, FALSE);
|
|
|
|
return Private;
|
|
}
|
|
|
|
/**
|
|
Clean the iSCSI driver data.
|
|
|
|
@param[in] Private The iSCSI driver data.
|
|
**/
|
|
VOID
|
|
IScsiCleanDriverData (
|
|
IN ISCSI_DRIVER_DATA *Private
|
|
)
|
|
{
|
|
if (Private->DevicePath != NULL) {
|
|
gBS->UninstallProtocolInterface (
|
|
Private->ExtScsiPassThruHandle,
|
|
&gEfiDevicePathProtocolGuid,
|
|
Private->DevicePath
|
|
);
|
|
|
|
FreePool (Private->DevicePath);
|
|
}
|
|
|
|
if (Private->ExtScsiPassThruHandle != NULL) {
|
|
gBS->UninstallProtocolInterface (
|
|
Private->ExtScsiPassThruHandle,
|
|
&gEfiExtScsiPassThruProtocolGuid,
|
|
&Private->IScsiExtScsiPassThru
|
|
);
|
|
}
|
|
|
|
gBS->CloseEvent (Private->ExitBootServiceEvent);
|
|
|
|
FreePool (Private);
|
|
}
|
|
|
|
/**
|
|
Get the various configuration data of this iSCSI instance.
|
|
|
|
@param[in] Private The iSCSI driver data.
|
|
|
|
@retval EFI_SUCCESS The configuration of this instance is got.
|
|
@retval EFI_ABORTED The operation was aborted.
|
|
@retval Others Other errors as indicated.
|
|
**/
|
|
EFI_STATUS
|
|
IScsiGetConfigData (
|
|
IN ISCSI_DRIVER_DATA *Private
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
ISCSI_SESSION *Session;
|
|
UINTN BufferSize;
|
|
EFI_MAC_ADDRESS MacAddress;
|
|
UINTN HwAddressSize;
|
|
UINT16 VlanId;
|
|
CHAR16 MacString[70];
|
|
|
|
//
|
|
// get the iSCSI Initiator Name
|
|
//
|
|
Session = &Private->Session;
|
|
Session->InitiatorNameLength = ISCSI_NAME_MAX_SIZE;
|
|
Status = gIScsiInitiatorName.Get (
|
|
&gIScsiInitiatorName,
|
|
&Session->InitiatorNameLength,
|
|
Session->InitiatorName
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Get the mac string, it's the name of various variable
|
|
//
|
|
Status = NetLibGetMacAddress (Private->Controller, &MacAddress, &HwAddressSize);
|
|
ASSERT (Status == EFI_SUCCESS);
|
|
VlanId = NetLibGetVlanId (Private->Controller);
|
|
IScsiMacAddrToStr (&MacAddress, (UINT32) HwAddressSize, VlanId, MacString);
|
|
|
|
//
|
|
// Get the normal configuration.
|
|
//
|
|
BufferSize = sizeof (Session->ConfigData.NvData);
|
|
Status = gRT->GetVariable (
|
|
MacString,
|
|
&gEfiIScsiInitiatorNameProtocolGuid,
|
|
NULL,
|
|
&BufferSize,
|
|
&Session->ConfigData.NvData
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
if (!Session->ConfigData.NvData.Enabled) {
|
|
return EFI_ABORTED;
|
|
}
|
|
//
|
|
// Get the CHAP Auth information.
|
|
//
|
|
BufferSize = sizeof (Session->AuthData.AuthConfig);
|
|
Status = gRT->GetVariable (
|
|
MacString,
|
|
&gIScsiCHAPAuthInfoGuid,
|
|
NULL,
|
|
&BufferSize,
|
|
&Session->AuthData.AuthConfig
|
|
);
|
|
|
|
if (!EFI_ERROR (Status) && Session->ConfigData.NvData.InitiatorInfoFromDhcp) {
|
|
//
|
|
// Start dhcp.
|
|
//
|
|
Status = IScsiDoDhcp (Private->Image, Private->Controller, &Session->ConfigData);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Get the device path of the iSCSI tcp connection and update it.
|
|
|
|
@param[in] Private The iSCSI driver data.
|
|
|
|
@return The updated device path.
|
|
@retval NULL Other errors as indicated.
|
|
**/
|
|
EFI_DEVICE_PATH_PROTOCOL *
|
|
IScsiGetTcpConnDevicePath (
|
|
IN ISCSI_DRIVER_DATA *Private
|
|
)
|
|
{
|
|
ISCSI_SESSION *Session;
|
|
ISCSI_CONNECTION *Conn;
|
|
TCP4_IO *Tcp4Io;
|
|
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
|
|
EFI_STATUS Status;
|
|
EFI_DEV_PATH *DPathNode;
|
|
|
|
Session = &Private->Session;
|
|
if (Session->State != SESSION_STATE_LOGGED_IN) {
|
|
return NULL;
|
|
}
|
|
|
|
Conn = NET_LIST_USER_STRUCT_S (
|
|
Session->Conns.ForwardLink,
|
|
ISCSI_CONNECTION,
|
|
Link,
|
|
ISCSI_CONNECTION_SIGNATURE
|
|
);
|
|
Tcp4Io = &Conn->Tcp4Io;
|
|
|
|
Status = gBS->HandleProtocol (
|
|
Tcp4Io->Handle,
|
|
&gEfiDevicePathProtocolGuid,
|
|
(VOID **)&DevicePath
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return NULL;
|
|
}
|
|
//
|
|
// Duplicate it.
|
|
//
|
|
DevicePath = DuplicateDevicePath (DevicePath);
|
|
if (DevicePath == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
DPathNode = (EFI_DEV_PATH *) DevicePath;
|
|
|
|
while (!IsDevicePathEnd (&DPathNode->DevPath)) {
|
|
if ((DevicePathType (&DPathNode->DevPath) == MESSAGING_DEVICE_PATH) &&
|
|
(DevicePathSubType (&DPathNode->DevPath) == MSG_IPv4_DP)
|
|
) {
|
|
|
|
DPathNode->Ipv4.LocalPort = 0;
|
|
DPathNode->Ipv4.StaticIpAddress =
|
|
(BOOLEAN) (!Session->ConfigData.NvData.InitiatorInfoFromDhcp);
|
|
|
|
IP4_COPY_ADDRESS (
|
|
&DPathNode->Ipv4.GatewayIpAddress,
|
|
&Session->ConfigData.NvData.Gateway
|
|
);
|
|
|
|
IP4_COPY_ADDRESS (
|
|
&DPathNode->Ipv4.SubnetMask,
|
|
&Session->ConfigData.NvData.SubnetMask
|
|
);
|
|
|
|
break;
|
|
}
|
|
|
|
DPathNode = (EFI_DEV_PATH *) NextDevicePathNode (&DPathNode->DevPath);
|
|
}
|
|
|
|
return DevicePath;
|
|
}
|
|
|
|
/**
|
|
Abort the session when the transition from BS to RT is initiated.
|
|
|
|
@param[in] Event The event signaled.
|
|
@param[in] Context The iSCSI driver data.
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
IScsiOnExitBootService (
|
|
IN EFI_EVENT Event,
|
|
IN VOID *Context
|
|
)
|
|
{
|
|
ISCSI_DRIVER_DATA *Private;
|
|
|
|
Private = (ISCSI_DRIVER_DATA *) Context;
|
|
gBS->CloseEvent (Private->ExitBootServiceEvent);
|
|
|
|
IScsiSessionAbort (&Private->Session);
|
|
}
|