1 /** @file 2 Support routines for PxeBc. 3 4 Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 16 #include "PxeBcImpl.h" 17 18 19 /** 20 The common notify function associated with various PxeBc events. 21 22 @param Event The event signaled. 23 @param Context The context. 24 25 **/ 26 VOID 27 EFIAPI 28 PxeBcCommonNotify ( 29 IN EFI_EVENT Event, 30 IN VOID *Context 31 ) 32 { 33 *((BOOLEAN *) Context) = TRUE; 34 } 35 36 37 /** 38 This function initialize(or configure) the Udp4Write instance. 39 40 @param Udp4 Pointer to the EFI_UDP4_PROTOCOL instance. 41 @param StationIp Pointer to the station ip address. 42 @param SubnetMask Pointer to the subnetmask of the station ip address. 43 @param Gateway Pointer to the gateway ip address. 44 @param SrcPort Pointer to the srouce port of the station. 45 46 @retval EFI_SUCCESS The configuration settings were set, changed, or reset successfully. 47 @retval EFI_NO_MAPPING When using a default address, configuration (DHCP, BOOTP, 48 RARP, etc.) is not finished yet. 49 @retval EFI_INVALID_PARAMETER One or more following conditions are TRUE: 50 @retval EFI_ALREADY_STARTED The EFI UDPv4 Protocol instance is already started/configured 51 and must be stopped/reset before it can be reconfigured. 52 @retval EFI_ACCESS_DENIED UdpConfigData. AllowDuplicatePort is FALSE 53 and UdpConfigData.StationPort is already used by 54 other instance. 55 @retval EFI_OUT_OF_RESOURCES The EFI UDPv4 Protocol driver cannot allocate memory for this 56 EFI UDPv4 Protocol instance. 57 @retval EFI_DEVICE_ERROR An unexpected network or system error occurred and this instance 58 was not opened. 59 @retval Others Please examine the function Udp4->Routes(Udp4, FALSE, &mZeroIp4Addr, &mZeroIp4Addr, Gateway) returns. 60 61 **/ 62 EFI_STATUS 63 PxeBcConfigureUdpWriteInstance ( 64 IN EFI_UDP4_PROTOCOL *Udp4, 65 IN EFI_IPv4_ADDRESS *StationIp, 66 IN EFI_IPv4_ADDRESS *SubnetMask, 67 IN EFI_IPv4_ADDRESS *Gateway, 68 IN OUT UINT16 *SrcPort 69 ) 70 { 71 EFI_UDP4_CONFIG_DATA Udp4CfgData; 72 EFI_STATUS Status; 73 74 ZeroMem (&Udp4CfgData, sizeof (Udp4CfgData)); 75 76 Udp4CfgData.ReceiveTimeout = PXEBC_DEFAULT_LIFETIME; 77 Udp4CfgData.TypeOfService = DEFAULT_ToS; 78 Udp4CfgData.TimeToLive = DEFAULT_TTL; 79 Udp4CfgData.AllowDuplicatePort = TRUE; 80 81 CopyMem (&Udp4CfgData.StationAddress, StationIp, sizeof (*StationIp)); 82 CopyMem (&Udp4CfgData.SubnetMask, SubnetMask, sizeof (*SubnetMask)); 83 84 Udp4CfgData.StationPort = *SrcPort; 85 86 // 87 // Reset the instance. 88 // 89 Udp4->Configure (Udp4, NULL); 90 91 Status = Udp4->Configure (Udp4, &Udp4CfgData); 92 if (!EFI_ERROR (Status) && (Gateway->Addr[0] != 0)) { 93 // 94 // basic configuration OK, need to add the default route entry 95 // 96 Status = Udp4->Routes (Udp4, FALSE, &mZeroIp4Addr, &mZeroIp4Addr, Gateway); 97 if (EFI_ERROR (Status)) { 98 // 99 // roll back 100 // 101 Udp4->Configure (Udp4, NULL); 102 } 103 } 104 105 if (!EFI_ERROR (Status) && (*SrcPort == 0)) { 106 Udp4->GetModeData (Udp4, &Udp4CfgData, NULL, NULL, NULL); 107 *SrcPort = Udp4CfgData.StationPort; 108 } 109 110 return Status; 111 } 112 113 114 /** 115 Convert number to ASCII value. 116 117 @param Number Numeric value to convert to decimal ASCII value. 118 @param Buffer Buffer to place ASCII version of the Number. 119 @param Length Length of Buffer. 120 121 **/ 122 VOID 123 CvtNum ( 124 IN UINTN Number, 125 IN UINT8 *Buffer, 126 IN UINTN Length 127 ) 128 { 129 UINTN Remainder; 130 131 while (Length > 0) { 132 Remainder = Number % 10; 133 Number /= 10; 134 Length--; 135 Buffer[Length] = (UINT8) ('0' + Remainder); 136 } 137 } 138 139 140 /** 141 Convert unsigned int number to decimal number. 142 143 @param Number The unsigned int number will be converted. 144 @param Buffer Pointer to the buffer to store the decimal number after transform. 145 @param[in] BufferSize The maxsize of the buffer. 146 147 @return the length of the number after transform. 148 149 **/ 150 UINTN 151 UtoA10 ( 152 IN UINTN Number, 153 IN CHAR8 *Buffer, 154 IN UINTN BufferSize 155 ) 156 { 157 UINTN Index; 158 CHAR8 TempStr[64]; 159 160 Index = 63; 161 TempStr[Index] = 0; 162 163 do { 164 Index--; 165 TempStr[Index] = (CHAR8) ('0' + (Number % 10)); 166 Number = Number / 10; 167 } while (Number != 0); 168 169 AsciiStrCpyS (Buffer, BufferSize, &TempStr[Index]); 170 171 return AsciiStrLen (Buffer); 172 } 173 174 175 /** 176 Convert ASCII numeric string to a UINTN value. 177 178 @param Buffer Pointer to the 8-byte unsigned int value. 179 180 @return UINTN value of the ASCII string. 181 182 **/ 183 UINT64 184 AtoU64 ( 185 IN UINT8 *Buffer 186 ) 187 { 188 UINT64 Value; 189 UINT8 Character; 190 191 Value = 0; 192 while ((Character = *Buffer++) != '\0') { 193 Value = MultU64x32 (Value, 10) + (Character - '0'); 194 } 195 196 return Value; 197 } 198 199
