Hesham/wintun
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Cleanup adapter power monitoring

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Wintun adapter is always paused before transition to a low-power state.
Even on NDIS 6.30 we do not specify the NDIS_MINIPORT_ATTRIBUTES_NO_-
PAUSE_ON_SUSPEND flag. Since OID_PNP_SET_POWER does not do anything else
that TunPause() already takes care of it is redundant. The
TUN_FLAGS_ENABLED and TUN_FLAGS_POWERED were also mostly identical.

Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2019-06-12 15:27:07 +02:00
parent bce44d30e4
commit 47cde0f340
1 changed files with 2 additions and 15 deletions
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17
wintun.c
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@ -57,8 +57,7 @@ typedef struct _TUN_PACKET {
typedef enum _TUN_FLAGS {
TUN_FLAGS_ENABLED = 1 << 0, // Toggles between paused and running state
TUN_FLAGS_POWERED = 1 << 1, // Toggles between D1-4 (powered off) and D0 (powered on)
TUN_FLAGS_PRESENT = 1 << 2, // Toggles between removal pending and being present
TUN_FLAGS_PRESENT = 1 << 1, // Toggles between removal pending and being present
} TUN_FLAGS;
typedef struct _TUN_CTX {
@ -164,7 +163,6 @@ static NTSTATUS TunCheckForPause(_Inout_ TUN_CTX *ctx)
LONG flags = InterlockedGet(&ctx->Flags);
return
!(flags & TUN_FLAGS_PRESENT) ? STATUS_NDIS_ADAPTER_REMOVED :
!(flags & TUN_FLAGS_POWERED) ? STATUS_NDIS_LOW_POWER_STATE :
!(flags & TUN_FLAGS_ENABLED) ? STATUS_NDIS_PAUSED :
InterlockedGet64(&ctx->Device.RefCount) <= 0 ? STATUS_NDIS_MEDIA_DISCONNECTED :
STATUS_SUCCESS;
@ -1212,7 +1210,7 @@ static NDIS_STATUS TunInitializeEx(NDIS_HANDLE MiniportAdapterHandle, NDIS_HANDL
TunIndicateStatus(MiniportAdapterHandle, MediaConnectStateDisconnected);
ASSERT(InterlockedGet64(&AdapterCount) < MAXLONG64);
InterlockedIncrement64(&AdapterCount);
InterlockedOr(&ctx->Flags, TUN_FLAGS_POWERED | TUN_FLAGS_PRESENT);
InterlockedOr(&ctx->Flags, TUN_FLAGS_PRESENT);
return NDIS_STATUS_SUCCESS;
cleanup_NdisFreeNetBufferListPool:
@ -1493,17 +1491,6 @@ static NDIS_STATUS TunOidSet(_Inout_ TUN_CTX *ctx, _Inout_ NDIS_OID_REQUEST *Oid
return NDIS_STATUS_INVALID_LENGTH;
}
OidRequest->DATA.SET_INFORMATION.BytesRead = sizeof(NDIS_DEVICE_POWER_STATE);
BOOLEAN powered = *(NDIS_DEVICE_POWER_STATE *)OidRequest->DATA.SET_INFORMATION.InformationBuffer < NdisDeviceStateD1;
KIRQL irql = ExAcquireSpinLockExclusive(&ctx->TransitionLock);
if (powered)
InterlockedOr (&ctx->Flags, TUN_FLAGS_POWERED);
else
InterlockedAnd(&ctx->Flags, ~TUN_FLAGS_POWERED);
ExReleaseSpinLockExclusive(&ctx->TransitionLock, irql);
if (!powered)
TunQueueClear(ctx, STATUS_NDIS_LOW_POWER_STATE);
return NDIS_STATUS_SUCCESS;
}