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/*
* Copyright (c) 2016 Cloudbase Solutions Srl
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __RECIRC_H_
#define __RECIRC_H_ 1
#include "Actions.h"
#define DEFERRED_ACTION_QUEUE_SIZE 10
#define DEFERRED_ACTION_EXEC_LEVEL 4
typedef struct _OVS_DEFERRED_ACTION {
PNET_BUFFER_LIST nbl;
PNL_ATTR actions;
OvsFlowKey key;
} OVS_DEFERRED_ACTION, *POVS_DEFERRED_ACTION;
/*
* --------------------------------------------------------------------------
* '_OVS_DEFERRED_ACTION_QUEUE' structure is responsible for keeping track of
* all deferred actions. The maximum number of deferred actions should not
* exceed 'DEFERRED_ACTION_QUEUE_SIZE'.
* --------------------------------------------------------------------------
*/
typedef struct _OVS_DEFERRED_ACTION_QUEUE {
UINT32 head;
UINT32 tail;
OVS_DEFERRED_ACTION queue[DEFERRED_ACTION_QUEUE_SIZE];
} OVS_DEFERRED_ACTION_QUEUE, *POVS_DEFERRED_ACTION_QUEUE;
/*
* --------------------------------------------------------------------------
* OvsProcessDeferredActions --
* This function processes all deferred actions contained in the queue
* corresponding to the current CPU.
* --------------------------------------------------------------------------
*/
NDIS_STATUS
OvsProcessDeferredActions(POVS_SWITCH_CONTEXT switchContext,
OvsCompletionList *completionList,
UINT32 portNo,
ULONG sendFlags,
OVS_PACKET_HDR_INFO *layers);
/*
* --------------------------------------------------------------------------
* OvsAddDeferredActions --
* This function adds the deferred action to the current CPU queue and
* returns the new queue entry if the queue is not already full.
* --------------------------------------------------------------------------
*/
POVS_DEFERRED_ACTION
OvsAddDeferredActions(PNET_BUFFER_LIST packet,
OvsFlowKey *key,
const PNL_ATTR actions);
/*
* --------------------------------------------------------------------------
* OvsDeferredActionsQueueAlloc --
* The function allocates per-cpu deferred actions queue.
* --------------------------------------------------------------------------
*/
BOOLEAN
OvsDeferredActionsQueueAlloc();
/*
* --------------------------------------------------------------------------
* OvsDeferredActionsQueueFree --
* The function frees per-cpu deferred actions queue.
* --------------------------------------------------------------------------
*/
VOID
OvsDeferredActionsQueueFree();
/*
* --------------------------------------------------------------------------
* OvsDeferredActionsLevelAlloc --
* The function allocates per-cpu deferred actions execution level.
* --------------------------------------------------------------------------
*/
BOOLEAN
OvsDeferredActionsLevelAlloc();
/*
* --------------------------------------------------------------------------
* OvsDeferredActionsLevelFree --
* The function frees per-cpu deferred actions execution level.
* --------------------------------------------------------------------------
*/
VOID
OvsDeferredActionsLevelFree();
/*
* --------------------------------------------------------------------------
* OvsDeferredActionsLevelGet --
* The function returns the deferred action execution level corresponding
* to the current processor.
* --------------------------------------------------------------------------
*/
UINT32
OvsDeferredActionsLevelGet();
/*
* --------------------------------------------------------------------------
* OvsDeferredActionsLevelInc --
* The function increments the deferred action execution level
* corresponding to the current processor.
* --------------------------------------------------------------------------
*/
VOID
OvsDeferredActionsLevelInc();
/*
* --------------------------------------------------------------------------
* OvsDeferredActionsLevelDec --
* The function decrements the deferred action execution level
* corresponding to the current processor.
* --------------------------------------------------------------------------
*/
VOID
OvsDeferredActionsLevelDec();
#endif /* __RECIRC_H_ */
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