/** @file\r
Implementation of Managed Network Protocol I/O functions.\r
\r
-Copyright (c) 2005 - 2013, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2005 - 2016, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions\r
of the BSD License which accompanies this distribution. The full\r
return TRUE;\r
}\r
\r
-\r
/**\r
Build the packet to transmit from the TxData passed in.\r
\r
@param[out] PktLen Pointer to a UINT32 variable used to record the packet's\r
length.\r
\r
+ @retval EFI_SUCCESS TxPackage is built.\r
+ @retval EFI_OUT_OF_RESOURCES The deliver fails due to lack of memory resource.\r
+\r
**/\r
-VOID\r
+EFI_STATUS\r
MnpBuildTxPacket (\r
IN MNP_SERVICE_DATA *MnpServiceData,\r
IN EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData,\r
EFI_SIMPLE_NETWORK_MODE *SnpMode;\r
UINT8 *DstPos;\r
UINT16 Index;\r
- MNP_DEVICE_DATA *MnpDerviceData;\r
-\r
- MnpDerviceData = MnpServiceData->MnpDeviceData;\r
+ MNP_DEVICE_DATA *MnpDeviceData;\r
+ UINT8 *TxBuf;\r
+ \r
+ MnpDeviceData = MnpServiceData->MnpDeviceData;\r
+ \r
+ TxBuf = MnpAllocTxBuf (MnpDeviceData);\r
+ if (TxBuf == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+ \r
+ //\r
+ // Reserve space for vlan tag if needed.\r
+ //\r
+ if (MnpServiceData->VlanId != 0) {\r
+ *PktBuf = TxBuf + NET_VLAN_TAG_LEN;\r
+ } else {\r
+ *PktBuf = TxBuf;\r
+ }\r
+ \r
if ((TxData->DestinationAddress == NULL) && (TxData->FragmentCount == 1)) {\r
- //\r
- // Reserve space for vlan tag,if necessary.\r
- //\r
- if (MnpServiceData->VlanId != 0) {\r
- *PktBuf = MnpDerviceData->TxBuf + NET_VLAN_TAG_LEN;\r
- } else {\r
- *PktBuf = MnpDerviceData->TxBuf;\r
- } \r
- \r
CopyMem (\r
*PktBuf,\r
TxData->FragmentTable[0].FragmentBuffer,\r
// one fragment, copy the data into the packet buffer. Reserve the\r
// media header space if necessary.\r
//\r
- SnpMode = MnpDerviceData->Snp->Mode;\r
- DstPos = MnpDerviceData->TxBuf;\r
-\r
+ SnpMode = MnpDeviceData->Snp->Mode; \r
+ DstPos = *PktBuf;\r
*PktLen = 0;\r
if (TxData->DestinationAddress != NULL) {\r
//\r
}\r
\r
//\r
- // Set the buffer pointer and the buffer length.\r
+ // Set the buffer length.\r
//\r
- *PktBuf = MnpDerviceData->TxBuf;\r
*PktLen += TxData->DataLength + TxData->HeaderLength;\r
}\r
+\r
+ return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
- Synchronously send out the packet.\r
+ Synchronously send out the packet. \r
+\r
+ This functon places the packet buffer to SNP driver's tansmit queue. The packet\r
+ can be considered successfully sent out once SNP acccetp the packet, while the\r
+ packet buffer recycle is deferred for better performance.\r
\r
@param[in] MnpServiceData Pointer to the mnp service context data.\r
@param[in] Packet Pointer to the pakcet buffer.\r
EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r
EFI_MANAGED_NETWORK_TRANSMIT_DATA *TxData;\r
UINT32 HeaderSize;\r
- UINT8 *TxBuf;\r
MNP_DEVICE_DATA *MnpDeviceData;\r
UINT16 ProtocolType;\r
\r
MnpDeviceData = MnpServiceData->MnpDeviceData;\r
Snp = MnpDeviceData->Snp;\r
TxData = Token->Packet.TxData;\r
-\r
+ Token->Status = EFI_SUCCESS;\r
HeaderSize = Snp->Mode->MediaHeaderSize - TxData->HeaderLength;\r
\r
//\r
// Media not present, skip packet transmit and report EFI_NO_MEDIA\r
//\r
DEBUG ((EFI_D_WARN, "MnpSyncSendPacket: No network cable detected.\n"));\r
- Status = EFI_NO_MEDIA;\r
- goto SIGNAL_TOKEN;\r
- }\r
-\r
- //\r
- // Start the timeout event.\r
- //\r
- Status = gBS->SetTimer (\r
- MnpDeviceData->TxTimeoutEvent,\r
- TimerRelative,\r
- MNP_TX_TIMEOUT_TIME\r
- );\r
- if (EFI_ERROR (Status)) {\r
+ Token->Status = EFI_NO_MEDIA;\r
goto SIGNAL_TOKEN;\r
}\r
\r
ProtocolType = TxData->ProtocolType;\r
}\r
\r
- for (;;) {\r
- //\r
- // Transmit the packet through SNP.\r
- //\r
+ //\r
+ // Transmit the packet through SNP.\r
+ //\r
+ Status = Snp->Transmit (\r
+ Snp,\r
+ HeaderSize,\r
+ Length,\r
+ Packet,\r
+ TxData->SourceAddress,\r
+ TxData->DestinationAddress,\r
+ &ProtocolType\r
+ );\r
+ if (Status == EFI_NOT_READY) {\r
+ Status = MnpRecycleTxBuf (MnpDeviceData);\r
+ if (EFI_ERROR (Status)) {\r
+ Token->Status = EFI_DEVICE_ERROR;\r
+ goto SIGNAL_TOKEN;\r
+ }\r
+\r
Status = Snp->Transmit (\r
Snp,\r
HeaderSize,\r
TxData->SourceAddress,\r
TxData->DestinationAddress,\r
&ProtocolType\r
- );\r
- if ((Status != EFI_SUCCESS) && (Status != EFI_NOT_READY)) {\r
- Status = EFI_DEVICE_ERROR;\r
- break;\r
- }\r
-\r
- //\r
- // If Status is EFI_SUCCESS, the packet is put in the transmit queue.\r
- // if Status is EFI_NOT_READY, the transmit engine of the network interface is busy.\r
- // Both need to sync SNP.\r
- //\r
- TxBuf = NULL;\r
- do {\r
- //\r
- // Get the recycled transmit buffer status.\r
- //\r
- Snp->GetStatus (Snp, NULL, (VOID **) &TxBuf);\r
-\r
- if (!EFI_ERROR (gBS->CheckEvent (MnpDeviceData->TxTimeoutEvent))) {\r
- Status = EFI_TIMEOUT;\r
- break;\r
- }\r
- } while (TxBuf == NULL);\r
-\r
- if ((Status == EFI_SUCCESS) || (Status == EFI_TIMEOUT)) {\r
- break;\r
- } else {\r
- //\r
- // Status is EFI_NOT_READY. Restart the timer event and call Snp->Transmit again.\r
- //\r
- gBS->SetTimer (\r
- MnpDeviceData->TxTimeoutEvent,\r
- TimerRelative,\r
- MNP_TX_TIMEOUT_TIME\r
- );\r
- }\r
+ ); \r
+ }\r
+ \r
+ if (EFI_ERROR (Status)) {\r
+ Token->Status = EFI_DEVICE_ERROR;\r
}\r
-\r
- //\r
- // Cancel the timer event.\r
- //\r
- gBS->SetTimer (MnpDeviceData->TxTimeoutEvent, TimerCancel, 0);\r
\r
SIGNAL_TOKEN:\r
\r
- Token->Status = Status;\r
gBS->SignalEvent (Token->Event);\r
\r
//\r
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