nwkFrame.c File Reference

Frame buffers management implementation.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include "sysConfig.h"
#include "nwk.h"
#include "nwkFrame.h"

Enumerations
enum	{ NWK_FRAME_STATE_FREE = 0x00 }

Functions
NwkFrame_t *	nwkFrameAlloc (void)
	Allocates an empty frame from the buffer pool. More...
void	nwkFrameCommandInit (NwkFrame_t *frame)
	Sets default parameters for the the command frame. More...
void	nwkFrameFree (NwkFrame_t *frame)
	Frees a frame and returns it to the buffer pool. More...
void	nwkFrameInit (void)
	Initializes the Frame module. More...
NwkFrame_t *	nwkFrameNext (NwkFrame_t *frame)
	Cycles through the allocated frames starting from the specified frame. More...

Variables
static NwkFrame_t	nwkFrameFrames [NWK_BUFFERS_AMOUNT]

anonymous enum

Enumerator
NWK_FRAME_STATE_FREE

NwkFrame_t* nwkFrameAlloc

(

void

)

Allocates an empty frame from the buffer pool.

Returns

Pointer to the frame or NULL if there are no free frames

References NwkFrame_t::data, NwkIb_t::lock, NWK_BUFFERS_AMOUNT, NWK_FRAME_STATE_FREE, nwkIb, NwkFrame_t::payload, NwkFrame_t::size, and NWK_DataReq_t::state.

Referenced by nwkDataReqSendFrame(), nwkRouteDiscoverySendReply(), nwkRouteDiscoverySendRequest(), nwkRouteSendRouteError(), nwkRxSendAck(), nwkTxBroadcastFrame(), and PHY_DataInd().

void nwkFrameCommandInit

(

NwkFrame_t *

frame

)

Sets default parameters for the the command frame.

Parameters

[in]

frame

Pointer to the command frame

References NwkIb_t::addr, NwkFrame_t::header, NWK_SUCCESS_STATUS, NwkFrameHeader_t::nwkFcf, nwkIb, NwkFrameHeader_t::nwkSeq, NwkIb_t::nwkSeqNum, NwkFrameHeader_t::nwkSrcAddr, NwkFrameHeader_t::security, and NwkFrame_t::tx.

Referenced by nwkRouteDiscoverySendReply(), nwkRouteDiscoverySendRequest(), nwkRouteSendRouteError(), and nwkRxSendAck().

void nwkFrameFree

(

NwkFrame_t *

frame

)

Frees a frame and returns it to the buffer pool.

Parameters

[in]

frame

Pointer to the frame to be freed

References NwkIb_t::lock, NWK_FRAME_STATE_FREE, nwkIb, and NwkFrame_t::state.

Referenced by nwkDataReqTxConf(), nwkRouteFrame(), nwkRxTaskHandler(), and nwkTxTaskHandler().

void nwkFrameInit

(

void

)

Initializes the Frame module.

References NWK_BUFFERS_AMOUNT, NWK_FRAME_STATE_FREE, and NwkFrame_t::state.

Referenced by NWK_Init().

NwkFrame_t* nwkFrameNext

(

NwkFrame_t *

frame

)

Cycles through the allocated frames starting from the specified frame.

Parameters

[in]

frame

Pointer to the current frame or NULL for the first frame

Returns

Next allocated frame or NULL if there are no more frames

References NWK_DataReq_t::frame, NWK_BUFFERS_AMOUNT, NWK_FRAME_STATE_FREE, nwkFrameFrames, and NwkFrame_t::state.

Referenced by nwkRouteDiscoveryDone(), nwkRxTaskHandler(), nwkSecurityTaskHandler(), nwkTxAckReceived(), nwkTxAckWaitTimerHandler(), nwkTxDelayTimerHandler(), and nwkTxTaskHandler().

NwkFrame_t nwkFrameFrames[NWK_BUFFERS_AMOUNT]

static

Referenced by nwkFrameNext().