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MdeModulePkg/NetLib: Add NetLibDetectMediaWaitTimeout() API to support EFI_NOT_READY media state detection

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In wireless connection, connecting state needs to be cared more
about. ECR 1772 redefined the state EFI_NOT_READY to represent
connecting state and can be retrieved from Aip protocol. This
patch adds a new API to check media state at a specified time
interval when network is connecting until the connection process
finishes or timeout.

V2:
  * Return error status code directly when Aip protocol falied to detect
    media rather than wait for another time's check.
  * Set media state default value to EFI_SUCCESS since some platforms may
    not support retrieving media state from Aip protocol.

Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wang Fan <fan.wang@intel.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
This commit is contained in:
fanwang2
2017-12-06 13:00:21 +08:00
committed by Jiaxin Wu
parent 1e6e6e188e
commit ca4e432392
3 changed files with 205 additions and 0 deletions
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163
MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
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@ -19,6 +19,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Protocol/DriverBinding.h>
#include <Protocol/ServiceBinding.h>
#include <Protocol/SimpleNetwork.h>
#include <Protocol/AdapterInformation.h>
#include <Protocol/ManagedNetwork.h>
#include <Protocol/Ip4Config2.h>
#include <Protocol/ComponentName.h>
@ -2502,6 +2503,168 @@ Exit:
return Status;
}
/**
Detect media state for a network device. This routine will wait for a period of time at
a specified checking interval when a certain network is under connecting until connection
process finishs or timeout. If Aip protocol is supported by low layer drivers, three kinds
of media states can be detected: EFI_SUCCESS, EFI_NOT_READY and EFI_NO_MEDIA, represents
connected state, connecting state and no media state respectively. When function detects
the current state is EFI_NOT_READY, it will loop to wait for next time's check until state
turns to be EFI_SUCCESS or EFI_NO_MEDIA. If Aip protocol is not supported, function will
call NetLibDetectMedia() and return state directly.
@param[in] ServiceHandle The handle where network service binding protocols are
installed on.
@param[in] Timeout The maximum number of 100ns units to wait when network
is connecting. Zero value means detect once and return
immediately.
@param[out] MediaState The pointer to the detected media state.
@retval EFI_SUCCESS Media detection success.
@retval EFI_INVALID_PARAMETER ServiceHandle is not a valid network device handle or
MediaState pointer is NULL.
@retval EFI_DEVICE_ERROR A device error occurred.
@retval EFI_TIMEOUT Network is connecting but timeout.
**/
EFI_STATUS
EFIAPI
NetLibDetectMediaWaitTimeout (
IN EFI_HANDLE ServiceHandle,
IN UINT64 Timeout,
OUT EFI_STATUS *MediaState
)
{
EFI_STATUS Status;
EFI_HANDLE SnpHandle;
EFI_SIMPLE_NETWORK_PROTOCOL *Snp;
EFI_ADAPTER_INFORMATION_PROTOCOL *Aip;
EFI_ADAPTER_INFO_MEDIA_STATE *MediaInfo;
BOOLEAN MediaPresent;
UINTN DataSize;
EFI_STATUS TimerStatus;
EFI_EVENT Timer;
UINT64 TimeRemained;
if (MediaState == NULL) {
return EFI_INVALID_PARAMETER;
}
*MediaState = EFI_SUCCESS;
MediaInfo = NULL;
//
// Get SNP handle
//
Snp = NULL;
SnpHandle = NetLibGetSnpHandle (ServiceHandle, &Snp);
if (SnpHandle == NULL) {
return EFI_INVALID_PARAMETER;
}
Status = gBS->HandleProtocol (
SnpHandle,
&gEfiAdapterInformationProtocolGuid,
(VOID *) &Aip
);
if (EFI_ERROR (Status)) {
MediaPresent = TRUE;
Status = NetLibDetectMedia (ServiceHandle, &MediaPresent);
if (!EFI_ERROR (Status)) {
if (MediaPresent == TRUE) {
*MediaState = EFI_SUCCESS;
} else {
*MediaState = EFI_NO_MEDIA;
}
}
//
// NetLibDetectMedia doesn't support EFI_NOT_READY status, return now!
//
return Status;
}
Status = Aip->GetInformation (
Aip,
&gEfiAdapterInfoMediaStateGuid,
(VOID **) &MediaInfo,
&DataSize
);
if (!EFI_ERROR (Status)) {
*MediaState = MediaInfo->MediaState;
FreePool (MediaInfo);
if (*MediaState != EFI_NOT_READY || Timeout < MEDIA_STATE_DETECT_TIME_INTERVAL) {
return EFI_SUCCESS;
}
} else {
if (MediaInfo != NULL) {
FreePool (MediaInfo);
}
return Status;
}
//
// Loop to check media state
//
Timer = NULL;
TimeRemained = Timeout;
Status = gBS->CreateEvent (EVT_TIMER, TPL_CALLBACK, NULL, NULL, &Timer);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
do {
Status = gBS->SetTimer (
Timer,
TimerRelative,
MEDIA_STATE_DETECT_TIME_INTERVAL
);
if (EFI_ERROR (Status)) {
gBS->CloseEvent(Timer);
return EFI_DEVICE_ERROR;
}
do {
TimerStatus = gBS->CheckEvent (Timer);
if (!EFI_ERROR (TimerStatus)) {
TimeRemained -= MEDIA_STATE_DETECT_TIME_INTERVAL;
Status = Aip->GetInformation (
Aip,
&gEfiAdapterInfoMediaStateGuid,
(VOID **) &MediaInfo,
&DataSize
);
if (!EFI_ERROR (Status)) {
*MediaState = MediaInfo->MediaState;
FreePool (MediaInfo);
} else {
if (MediaInfo != NULL) {
FreePool (MediaInfo);
}
gBS->CloseEvent(Timer);
return Status;
}
}
} while (TimerStatus == EFI_NOT_READY);
} while (*MediaState == EFI_NOT_READY && TimeRemained >= MEDIA_STATE_DETECT_TIME_INTERVAL);
gBS->CloseEvent(Timer);
if (*MediaState == EFI_NOT_READY && TimeRemained < MEDIA_STATE_DETECT_TIME_INTERVAL) {
return EFI_TIMEOUT;
} else {
return EFI_SUCCESS;
}
}
/**
Check the default address used by the IPv4 driver is static or dynamic (acquired
from DHCP).