/** @file\r
Support functions implementation for UefiPxeBc Driver.\r
\r
- Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR>\r
\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
#include "PxeBcImpl.h"\r
\r
\r
-\r
-/**\r
- This function returns SMBIOS string given the string number.\r
-\r
- @param[in] Smbios The pointer to the SMBIOS structure\r
- @param[in] StringNumber String number to return. 0 is used to skip all\r
- strings and point to the next SMBIOS structure.\r
-\r
- @return String The pointer to the next SMBIOS structure if\r
- StringNumber == 0.\r
-\r
-**/\r
-CHAR8 *\r
-PxeBcGetSmbiosString (\r
- IN SMBIOS_STRUCTURE_POINTER *Smbios,\r
- IN UINT16 StringNumber\r
- )\r
-{\r
- UINT16 Index;\r
- CHAR8 *String;\r
-\r
- //\r
- // Skip over formatted section.\r
- //\r
- String = (CHAR8 *) (Smbios->Raw + Smbios->Hdr->Length);\r
-\r
- //\r
- // Look through unformated section.\r
- //\r
- for (Index = 1; Index <= StringNumber || StringNumber == 0; Index++) {\r
- if (StringNumber == Index) {\r
- return String;\r
- }\r
-\r
- //\r
- // Skip zero string.\r
- //\r
- while (*String != 0) {\r
- String++;\r
- }\r
- String++;\r
-\r
- if (*String == 0) {\r
- //\r
- // If double NULL then we are done.\r
- // Return pointer to next structure in Smbios.\r
- // if you pass in a 0 you will always get here\r
- //\r
- Smbios->Raw = (UINT8 *)++String;\r
- return NULL;\r
- }\r
- }\r
-\r
- return NULL;\r
-}\r
-\r
-\r
-/**\r
- This function obtains the system guid and the serial number from the smbios table.\r
-\r
- @param[out] SystemGuid The pointer of the returned system guid.\r
-\r
- @retval EFI_SUCCESS Successfully obtained the system guid.\r
- @retval EFI_NOT_FOUND Did not find the SMBIOS table.\r
-\r
-**/\r
-EFI_STATUS\r
-PxeBcGetSystemGuid (\r
- OUT EFI_GUID *SystemGuid\r
- )\r
-{\r
- EFI_STATUS Status;\r
- SMBIOS_TABLE_ENTRY_POINT *SmbiosTable;\r
- SMBIOS_STRUCTURE_POINTER Smbios;\r
- SMBIOS_STRUCTURE_POINTER SmbiosEnd;\r
- UINT16 Index;\r
-\r
- SmbiosTable = NULL;\r
- Status = EfiGetSystemConfigurationTable (&gEfiSmbiosTableGuid, (VOID **) &SmbiosTable);\r
-\r
- if (EFI_ERROR (Status) || SmbiosTable == NULL) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- Smbios.Hdr = (SMBIOS_STRUCTURE *) (UINTN) SmbiosTable->TableAddress;\r
- SmbiosEnd.Raw = (UINT8 *) (UINTN) (SmbiosTable->TableAddress + SmbiosTable->TableLength);\r
-\r
- for (Index = 0; Index < SmbiosTable->TableLength; Index++) {\r
- if (Smbios.Hdr->Type == 1) {\r
- if (Smbios.Hdr->Length < 0x19) {\r
- //\r
- // Older version did not support Guid and Serial number\r
- //\r
- continue;\r
- }\r
- //\r
- // SMBIOS tables are byte packed so we need to do a byte copy to\r
- // prevend alignment faults on Itanium-based platform.\r
- //\r
- CopyMem (SystemGuid, &Smbios.Type1->Uuid, sizeof (EFI_GUID));\r
- PxeBcGetSmbiosString (&Smbios, Smbios.Type1->SerialNumber);\r
-\r
- return EFI_SUCCESS;\r
- }\r
- //\r
- // Make Smbios point to the next record\r
- //\r
- PxeBcGetSmbiosString (&Smbios, 0);\r
-\r
- if (Smbios.Raw >= SmbiosEnd.Raw) {\r
- //\r
- // SMBIOS 2.1 incorrectly stated the length of SmbiosTable as 0x1e.\r
- // given this we must double check against the length of the structure.\r
- //\r
- return EFI_SUCCESS;\r
- }\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-\r
/**\r
Flush the previous configration using the new station Ip address.\r
\r
\r
**/\r
EFI_STATUS\r
-PxeBcFlushStaionIp (\r
+PxeBcFlushStationIp (\r
PXEBC_PRIVATE_DATA *Private,\r
EFI_IP_ADDRESS *StationIp,\r
EFI_IP_ADDRESS *SubnetMask OPTIONAL\r
}\r
\r
Status = Private->Ip6->Receive (Private->Ip6, &Private->Icmp6Token);\r
- if (EFI_ERROR (Status)) {\r
- goto ON_EXIT;\r
- }\r
-\r
} else {\r
ASSERT (SubnetMask != NULL);\r
CopyMem (&Private->Udp4CfgData.StationAddress, StationIp, sizeof (EFI_IPv4_ADDRESS));\r
}\r
\r
Status = Private->Ip4->Receive (Private->Ip4, &Private->IcmpToken);\r
- if (EFI_ERROR (Status)) {\r
- goto ON_EXIT;\r
- }\r
-\r
}\r
\r
ON_EXIT:\r
/**\r
Check the received packet using the destination port.\r
\r
- @param[in] PxeBcMode The pointer to the mode data of PxeBc.\r
+ @param[in] Mode The pointer to the mode data of PxeBc.\r
@param[in] Session The pointer to the current UDPv4 session.\r
@param[in, out] DestPort The pointer to the destination port.\r
@param[in] OpFlags Operation flag for UdpRead/UdpWrite.\r
\r
@param[in] Number Numeric value to be converted.\r
@param[in] Buffer The pointer to the buffer for ASCII string.\r
+ @param[in] BufferSize The maxsize of the buffer.\r
\r
@return Length The actual length of the ASCII string.\r
\r
UINTN\r
PxeBcUintnToAscDec (\r
IN UINTN Number,\r
- IN UINT8 *Buffer\r
+ IN UINT8 *Buffer,\r
+ IN UINTN BufferSize\r
)\r
{\r
UINTN Index;\r
Number = (UINTN) (Number / 10);\r
} while (Number != 0);\r
\r
- AsciiStrCpy ((CHAR8 *) Buffer, &TempStr[Index]);\r
+ AsciiStrCpyS ((CHAR8 *) Buffer, BufferSize, &TempStr[Index]);\r
\r
Length = AsciiStrLen ((CHAR8 *) Buffer);\r
\r
\r
return EFI_INVALID_PARAMETER;\r
}\r
+\r
+/**\r
+ Calculate the elapsed time.\r
+\r
+ @param[in] Private The pointer to PXE private data\r
+\r
+**/\r
+VOID\r
+CalcElapsedTime (\r
+ IN PXEBC_PRIVATE_DATA *Private\r
+ )\r
+{\r
+ EFI_TIME Time;\r
+ UINT64 CurrentStamp;\r
+ UINT64 ElapsedTimeValue;\r
+\r
+ //\r
+ // Generate a time stamp of the centiseconds from 1900/1/1, assume 30day/month.\r
+ //\r
+ ZeroMem (&Time, sizeof (EFI_TIME));\r
+ gRT->GetTime (&Time, NULL);\r
+ CurrentStamp = (UINT64)\r
+ (\r
+ ((((((Time.Year - 1900) * 360 +\r
+ (Time.Month - 1)) * 30 +\r
+ (Time.Day - 1)) * 24 + Time.Hour) * 60 +\r
+ Time.Minute) * 60 + Time.Second) * 100\r
+ + DivU64x32(Time.Nanosecond, 10000000)\r
+ );\r
+\r
+ //\r
+ // Sentinel value of 0 means that this is the first DHCP packet that we are\r
+ // sending and that we need to initialize the value. First DHCP Solicit\r
+ // gets 0 elapsed-time. Otherwise, calculate based on StartTime.\r
+ //\r
+ if (Private->ElapsedTime == 0) {\r
+ Private->ElapsedTime = CurrentStamp;\r
+ } else {\r
+ ElapsedTimeValue = CurrentStamp - Private->ElapsedTime;\r
+\r
+ //\r
+ // If elapsed time cannot fit in two bytes, set it to 0xffff.\r
+ //\r
+ if (ElapsedTimeValue > 0xffff) {\r
+ ElapsedTimeValue = 0xffff;\r
+ }\r
+ //\r
+ // Save the elapsed time\r
+ //\r
+ Private->ElapsedTime = ElapsedTimeValue;\r
+ }\r
+}\r
+\r
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