+++ /dev/null
-/** @file\r
- Implementation of collecting the statistics on a network interface.\r
-\r
-Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>\r
-SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-\r
-#include "Snp.h"\r
-\r
-\r
-/**\r
- Resets or collects the statistics on a network interface.\r
-\r
- This function resets or collects the statistics on a network interface. If the\r
- size of the statistics table specified by StatisticsSize is not big enough for\r
- all the statistics that are collected by the network interface, then a partial\r
- buffer of statistics is returned in StatisticsTable, StatisticsSize is set to\r
- the size required to collect all the available statistics, and\r
- EFI_BUFFER_TOO_SMALL is returned.\r
- If StatisticsSize is big enough for all the statistics, then StatisticsTable\r
- will be filled, StatisticsSize will be set to the size of the returned\r
- StatisticsTable structure, and EFI_SUCCESS is returned.\r
- If the driver has not been initialized, EFI_DEVICE_ERROR will be returned.\r
- If Reset is FALSE, and both StatisticsSize and StatisticsTable are NULL, then\r
- no operations will be performed, and EFI_SUCCESS will be returned.\r
- If Reset is TRUE, then all of the supported statistics counters on this network\r
- interface will be reset to zero.\r
-\r
- @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.\r
- @param Reset Set to TRUE to reset the statistics for the network interface.\r
- @param StatisticsSize On input the size, in bytes, of StatisticsTable. On output\r
- the size, in bytes, of the resulting table of statistics.\r
- @param StatisticsTable A pointer to the EFI_NETWORK_STATISTICS structure that\r
- contains the statistics. Type EFI_NETWORK_STATISTICS is\r
- defined in "Related Definitions" below.\r
-\r
- @retval EFI_SUCCESS The requested operation succeeded.\r
- @retval EFI_NOT_STARTED The Simple Network Protocol interface has not been\r
- started by calling Start().\r
- @retval EFI_BUFFER_TOO_SMALL StatisticsSize is not NULL and StatisticsTable is\r
- NULL. The current buffer size that is needed to\r
- hold all the statistics is returned in StatisticsSize.\r
- @retval EFI_BUFFER_TOO_SMALL StatisticsSize is not NULL and StatisticsTable is\r
- not NULL. The current buffer size that is needed\r
- to hold all the statistics is returned in\r
- StatisticsSize. A partial set of statistics is\r
- returned in StatisticsTable.\r
- @retval EFI_INVALID_PARAMETER StatisticsSize is NULL and StatisticsTable is not\r
- NULL.\r
- @retval EFI_DEVICE_ERROR The Simple Network Protocol interface has not\r
- been initialized by calling Initialize().\r
- @retval EFI_DEVICE_ERROR An error was encountered collecting statistics\r
- from the NIC.\r
- @retval EFI_UNSUPPORTED The NIC does not support collecting statistics\r
- from the network interface.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-SnpUndi32Statistics (\r
- IN EFI_SIMPLE_NETWORK_PROTOCOL *This,\r
- IN BOOLEAN Reset,\r
- IN OUT UINTN *StatisticsSize, OPTIONAL\r
- IN OUT EFI_NETWORK_STATISTICS *StatisticsTable OPTIONAL\r
- )\r
-{\r
- SNP_DRIVER *Snp;\r
- PXE_DB_STATISTICS *Db;\r
- UINT64 *Stp;\r
- UINT64 Mask;\r
- UINTN Size;\r
- UINTN Index;\r
- EFI_TPL OldTpl;\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Get pointer to SNP driver instance for *This.\r
- //\r
- if (This == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);\r
-\r
- OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
-\r
- //\r
- // Return error if the SNP is not initialized.\r
- //\r
- switch (Snp->Mode.State) {\r
- case EfiSimpleNetworkInitialized:\r
- break;\r
-\r
- case EfiSimpleNetworkStopped:\r
- Status = EFI_NOT_STARTED;\r
- goto ON_EXIT;\r
-\r
- default:\r
- Status = EFI_DEVICE_ERROR;\r
- goto ON_EXIT;\r
- }\r
- //\r
- // if we are not resetting the counters, we have to have a valid stat table\r
- // with >0 size. if no reset, no table and no size, return success.\r
- //\r
- if (!Reset && StatisticsSize == NULL) {\r
- Status = (StatisticsTable != NULL) ? EFI_INVALID_PARAMETER : EFI_SUCCESS;\r
- goto ON_EXIT;\r
- }\r
- //\r
- // Initialize UNDI Statistics CDB\r
- //\r
- Snp->Cdb.OpCode = PXE_OPCODE_STATISTICS;\r
- Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;\r
- Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;\r
- Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;\r
- Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;\r
- Snp->Cdb.IFnum = Snp->IfNum;\r
- Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;\r
-\r
- if (Reset) {\r
- Snp->Cdb.OpFlags = PXE_OPFLAGS_STATISTICS_RESET;\r
- Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED;\r
- Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED;\r
- Db = Snp->Db;\r
- } else {\r
- Snp->Cdb.OpFlags = PXE_OPFLAGS_STATISTICS_READ;\r
- Snp->Cdb.DBsize = (UINT16) sizeof (PXE_DB_STATISTICS);\r
- Snp->Cdb.DBaddr = (UINT64)(UINTN) (Db = Snp->Db);\r
- }\r
- //\r
- // Issue UNDI command and check result.\r
- //\r
- DEBUG ((EFI_D_NET, "\nsnp->undi.statistics() "));\r
-\r
- (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);\r
-\r
- switch (Snp->Cdb.StatCode) {\r
- case PXE_STATCODE_SUCCESS:\r
- break;\r
-\r
- case PXE_STATCODE_UNSUPPORTED:\r
- DEBUG (\r
- (EFI_D_ERROR,\r
- "\nsnp->undi.statistics() %xh:%xh\n",\r
- Snp->Cdb.StatFlags,\r
- Snp->Cdb.StatCode)\r
- );\r
-\r
- Status = EFI_UNSUPPORTED;\r
- goto ON_EXIT;\r
-\r
- default:\r
- DEBUG (\r
- (EFI_D_ERROR,\r
- "\nsnp->undi.statistics() %xh:%xh\n",\r
- Snp->Cdb.StatFlags,\r
- Snp->Cdb.StatCode)\r
- );\r
-\r
- Status = EFI_DEVICE_ERROR;\r
- goto ON_EXIT;\r
- }\r
-\r
- if (Reset) {\r
- Status = EFI_SUCCESS;\r
- goto ON_EXIT;\r
- }\r
-\r
- if (StatisticsTable == NULL) {\r
- *StatisticsSize = sizeof (EFI_NETWORK_STATISTICS);\r
- Status = EFI_BUFFER_TOO_SMALL;\r
- goto ON_EXIT;\r
- }\r
- //\r
- // Convert the UNDI statistics information to SNP statistics\r
- // information.\r
- //\r
- ZeroMem (StatisticsTable, *StatisticsSize);\r
- Stp = (UINT64 *) StatisticsTable;\r
- Size = 0;\r
-\r
- for (Index = 0, Mask = 1; Index < 64; Index++, Mask = LShiftU64 (Mask, 1), Stp++) {\r
- //\r
- // There must be room for a full UINT64. Partial\r
- // numbers will not be stored.\r
- //\r
- if ((Index + 1) * sizeof (UINT64) > *StatisticsSize) {\r
- break;\r
- }\r
-\r
- if ((Db->Supported & Mask) != 0) {\r
- *Stp = Db->Data[Index];\r
- Size = Index + 1;\r
- } else {\r
- SetMem (Stp, sizeof (UINT64), 0xFF);\r
- }\r
- }\r
- //\r
- // Compute size up to last supported statistic.\r
- //\r
- while (++Index < 64) {\r
- if ((Db->Supported & (Mask = LShiftU64 (Mask, 1))) != 0) {\r
- Size = Index;\r
- }\r
- }\r
-\r
- Size *= sizeof (UINT64);\r
-\r
- if (*StatisticsSize >= Size) {\r
- *StatisticsSize = Size;\r
- Status = EFI_SUCCESS;\r
- } else {\r
- *StatisticsSize = Size;\r
- Status = EFI_BUFFER_TOO_SMALL;\r
- }\r
-\r
-ON_EXIT:\r
- gBS->RestoreTPL (OldTpl);\r
-\r
- return Status;\r
-}\r
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