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More tap driver cleanup, and add IOCTL to get L2 multicast ethernet address subscriptions.

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This commit is contained in:
Adam Ierymenko 2014-01-20 14:33:05 -08:00
commit 3375363d93
16 changed files with 118 additions and 250 deletions
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34
windows/TapDriver/tapdrvr.c
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@ -1523,6 +1523,7 @@ NTSTATUS
PIO_STACK_LOCATION l_IrpSp;
NTSTATUS l_Status = STATUS_SUCCESS;
BOOLEAN accessible;
ULONG i,j;
l_IrpSp = IoGetCurrentIrpStackLocation (p_IRP);
@ -1633,6 +1634,39 @@ NTSTATUS
}
#endif
// Allow ZeroTier One to get multicast memberships at the L2 level in a
// protocol-neutral manner.
case TAP_WIN_IOCTL_GET_MULTICAST_MEMBERSHIPS:
{
if (&l_Adapter->m_MCLockAllocated)
NdisAcquireSpinLock (&l_Adapter->m_MCLock);
if (l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength < TAP_WIN_IOCTL_GET_MULTICAST_MEMBERSHIPS_OUTPUT_BUF_SIZE) {
/* output buffer too small */
NOTE_ERROR ();
p_IRP->IoStatus.Status = l_Status = STATUS_INVALID_PARAMETER;
} else {
char *out = (char *)p_IRP->AssociatedIrp.SystemBuffer;
char *end = out + TAP_WIN_IOCTL_GET_MULTICAST_MEMBERSHIPS_OUTPUT_BUF_SIZE;
for(i=0;i<l_Adapter->m_MCListSize;++i) {
if (i >= TAP_MAX_MCAST_LIST)
break;
for(j=0;j<6;++j)
*(out++) = l_Adapter->m_MCList.list[i].addr[j];
if (out >= end)
break;
}
while (out < end)
*(out++) = (char)0;
p_IRP->IoStatus.Information
= l_IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
p_IRP->IoStatus.Status = l_Status = STATUS_SUCCESS;
}
if (&l_Adapter->m_MCLockAllocated)
NdisReleaseSpinLock (&l_Adapter->m_MCLock);
break;
}
case TAP_WIN_IOCTL_SET_MEDIA_STATUS:
{
if (l_IrpSp->Parameters.DeviceIoControl.InputBufferLength >=