/*
* --------------------------------------------------------------------------
* This function allocated the switch context, and initializes its necessary
* members.
* --------------------------------------------------------------------------
*/
NDIS_STATUS
OvsCreateSwitch(NDIS_HANDLE ndisFilterHandle,
POVS_SWITCH_CONTEXT *switchContextOut)
{
NDIS_STATUS status;
POVS_SWITCH_CONTEXT switchContext;
NDIS_SWITCH_CONTEXT hostSwitchContext;
NDIS_SWITCH_OPTIONAL_HANDLERS hostSwitchHandler;
OVS_LOG_TRACE("Enter: Create switch object");
switchContext = (POVS_SWITCH_CONTEXT) OvsAllocateMemoryWithTag(
sizeof(OVS_SWITCH_CONTEXT), OVS_SWITCH_POOL_TAG);
if (switchContext == NULL) {
status = NDIS_STATUS_RESOURCES;
goto create_switch_done;
}
RtlZeroMemory(switchContext, sizeof(OVS_SWITCH_CONTEXT));
/* Initialize the switch. */
hostSwitchHandler.Header.Type = NDIS_OBJECT_TYPE_SWITCH_OPTIONAL_HANDLERS;
hostSwitchHandler.Header.Size = NDIS_SIZEOF_SWITCH_OPTIONAL_HANDLERS_REVISION_1;
hostSwitchHandler.Header.Revision = NDIS_SWITCH_OPTIONAL_HANDLERS_REVISION_1;
status = NdisFGetOptionalSwitchHandlers(ndisFilterHandle,
&hostSwitchContext,
&hostSwitchHandler);
if (status != NDIS_STATUS_SUCCESS) {
OVS_LOG_ERROR("OvsExtAttach: Extension is running in "
"non-switch environment.");
OvsFreeMemoryWithTag(switchContext, OVS_SWITCH_POOL_TAG);
goto create_switch_done;
}
switchContext->NdisFilterHandle = ndisFilterHandle;
switchContext->NdisSwitchContext = hostSwitchContext;
RtlCopyMemory(&switchContext->NdisSwitchHandlers, &hostSwitchHandler,
sizeof(NDIS_SWITCH_OPTIONAL_HANDLERS));
status = OvsInitSwitchContext(switchContext);
if (status != NDIS_STATUS_SUCCESS) {
OvsFreeMemoryWithTag(switchContext, OVS_SWITCH_POOL_TAG);
switchContext = NULL;
goto create_switch_done;
}
status = OvsInitTunnelFilter(gOvsExtDriverObject, gOvsDeviceObject);
if (status != NDIS_STATUS_SUCCESS) {
OvsUninitSwitchContext(switchContext);
goto create_switch_done;
}
*switchContextOut = switchContext;
create_switch_done:
OVS_LOG_TRACE("Exit: switchContext: %p status: %#lx",
switchContext, status);
return status;
}
/*
* --------------------------------------------------------------------------
* This function deletes the switch by freeing all memory previously allocated.
* XXX need synchronization with other path.
* --------------------------------------------------------------------------
*/
VOID
OvsDeleteSwitch(POVS_SWITCH_CONTEXT switchContext)
{
UINT32 dpNo = (UINT32) -1;
OVS_LOG_TRACE("Enter: switchContext:%p", switchContext);
if (switchContext)
{
dpNo = switchContext->dpNo;
OvsClearAllSwitchVports(switchContext);
OvsUninitTunnelFilter(gOvsExtDriverObject);
OvsUninitSwitchContext(switchContext);
}
OVS_LOG_TRACE("Exit: deleted switch %p dpNo: %d", switchContext, dpNo);
}
