NTSTATUS
NotifierStoreWrite(
IN PXENVIF_NOTIFIER Notifier,
IN PXENBUS_STORE_TRANSACTION Transaction
)
{
PXENVIF_FRONTEND Frontend = Notifier->Frontend;
ULONG Port;
NTSTATUS status;
Port = EVTCHN(Port,
Notifier->EvtchnInterface,
Notifier->Evtchn);
status = STORE(Printf,
Notifier->StoreInterface,
Transaction,
FrontendGetPath(Frontend),
"event-channel",
"%u",
Port);
if (!NT_SUCCESS(status))
goto fail1;
return STATUS_SUCCESS;
fail1:
Error("fail1 (%08x)\n", status);
return status;
}
NTSTATUS
MacEnable(
IN PXENVIF_MAC Mac
)
{
PXENVIF_FRONTEND Frontend;
NTSTATUS status;
Frontend = Mac->Frontend;
ASSERT3U(KeGetCurrentIrql(), ==, DISPATCH_LEVEL);
KeAcquireSpinLockAtDpcLevel(&Mac->Lock);
status = STORE(Watch,
Mac->StoreInterface,
FrontendGetPath(Frontend),
"disconnect",
&Mac->Event,
&Mac->Watch);
if (!NT_SUCCESS(status))
goto fail1;
ASSERT(!Mac->Enabled);
Mac->Enabled = TRUE;
KeReleaseSpinLockFromDpcLevel(&Mac->Lock);
return STATUS_SUCCESS;
fail1:
Error("fail1 (%08x)\n");
KeReleaseSpinLockFromDpcLevel(&Mac->Lock);
return status;
}
NTSTATUS
MacConnect(
IN PXENVIF_MAC Mac
)
{
PXENVIF_FRONTEND Frontend;
PCHAR Buffer;
ULONG64 Mtu;
NTSTATUS status;
Frontend = Mac->Frontend;
Mac->StoreInterface = FrontendGetStoreInterface(Frontend);
STORE(Acquire, Mac->StoreInterface);
status = STORE(Read,
Mac->StoreInterface,
NULL,
FrontendGetPath(Frontend),
"mtu",
&Buffer);
if (!NT_SUCCESS(status)) {
Mtu = ETHERNET_MTU;
} else {
Mtu = strtol(Buffer, NULL, 10);
STORE(Free,
Mac->StoreInterface,
Buffer);
}
status = STATUS_INVALID_PARAMETER;
if (Mtu < ETHERNET_MIN)
goto fail1;
Mac->MaximumFrameSize = (ULONG)Mtu + sizeof (ETHERNET_TAGGED_HEADER);
status = __MacSetPermanentAddress(Mac,
FrontendGetPermanentMacAddress(Frontend));
if (!NT_SUCCESS(status))
goto fail2;
status = __MacSetCurrentAddress(Mac,
FrontendGetCurrentMacAddress(Frontend));
if (!NT_SUCCESS(status))
RtlCopyMemory(&Mac->CurrentAddress,
&Mac->PermanentAddress,
sizeof (ETHERNET_ADDRESS));
RtlFillMemory(Mac->BroadcastAddress.Byte, ETHERNET_ADDRESS_LENGTH, 0xFF);
Mac->DebugInterface = FrontendGetDebugInterface(Frontend);
DEBUG(Acquire, Mac->DebugInterface);
status = DEBUG(Register,
Mac->DebugInterface,
__MODULE__ "|MAC",
MacDebugCallback,
Mac,
&Mac->DebugCallback);
if (!NT_SUCCESS(status))
goto fail3;
ASSERT(!Mac->Connected);
Mac->Connected = TRUE;
return STATUS_SUCCESS;
fail3:
Error("fail3\n");
DEBUG(Release, Mac->DebugInterface);
Mac->DebugInterface = NULL;
RtlZeroMemory(Mac->BroadcastAddress.Byte, ETHERNET_ADDRESS_LENGTH);
RtlZeroMemory(Mac->CurrentAddress.Byte, ETHERNET_ADDRESS_LENGTH);
RtlZeroMemory(Mac->PermanentAddress.Byte, ETHERNET_ADDRESS_LENGTH);
fail2:
Error("fail2\n");
Mac->MaximumFrameSize = 0;
fail1:
Error("fail1 (%08x)\n");
STORE(Release, Mac->StoreInterface);
Mac->StoreInterface = NULL;
return status;
}
