nwkRouteDiscovery.c File Reference

Route discovery implementation.

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

#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include "sysTimer.h"
#include "sysConfig.h"
#include "nwk.h"
#include "nwkTx.h"
#include "nwkFrame.h"
#include "nwkRoute.h"
#include "nwkGroup.h"
#include "nwkCommand.h"
#include "nwkRouteDiscovery.h"

Data Structures
struct	NwkRouteDiscoveryTableEntry_t

Macros
#define	NWK_ROUTE_DISCOVERY_BEST_LINK_QUALITY   255
#define	NWK_ROUTE_DISCOVERY_NO_LINK   0
#define	NWK_ROUTE_DISCOVERY_TIMER_INTERVAL   100 /* ms */

Typedefs
typedef struct NwkRouteDiscoveryTableEntry_t	NwkRouteDiscoveryTableEntry_t

Enumerations
enum	{ NWK_RD_STATE_WAIT_FOR_ROUTE = 0x40 }

Functions
static void	nwkRouteDiscoveryDone (NwkRouteDiscoveryTableEntry_t *entry, bool status)
static NwkRouteDiscoveryTableEntry_t *	nwkRouteDiscoveryFindEntry (uint16_t src, uint16_t dst, uint8_t multicast)
void	nwkRouteDiscoveryInit (void)
	Initializes the Route Discovery module. More...
static NwkRouteDiscoveryTableEntry_t *	nwkRouteDiscoveryNewEntry (void)
bool	nwkRouteDiscoveryReplyReceived (NWK_DataInd_t *ind)
void	nwkRouteDiscoveryRequest (NwkFrame_t *frame)
bool	nwkRouteDiscoveryRequestReceived (NWK_DataInd_t *ind)
static void	nwkRouteDiscoverySendReply (NwkRouteDiscoveryTableEntry_t *entry, uint8_t flq, uint8_t rlq)
static bool	nwkRouteDiscoverySendRequest (NwkRouteDiscoveryTableEntry_t *entry, uint8_t lq)
static void	nwkRouteDiscoveryTimerHandler (SYS_Timer_t *timer)
static uint8_t	nwkRouteDiscoveryUpdateLq (uint8_t lqa, uint8_t lqb)

Variables
static NwkRouteDiscoveryTableEntry_t	nwkRouteDiscoveryTable [NWK_ROUTE_DISCOVERY_TABLE_SIZE]
static SYS_Timer_t	nwkRouteDiscoveryTimer

#define NWK_ROUTE_DISCOVERY_BEST_LINK_QUALITY   255

Referenced by nwkRouteDiscoveryRequest(), and nwkRouteDiscoveryRequestReceived().

#define NWK_ROUTE_DISCOVERY_NO_LINK   0

Referenced by nwkRouteDiscoveryNewEntry().

#define NWK_ROUTE_DISCOVERY_TIMER_INTERVAL   100 /* ms */

Referenced by nwkRouteDiscoveryInit(), and nwkRouteDiscoveryTimerHandler().

typedef struct NwkRouteDiscoveryTableEntry_t NwkRouteDiscoveryTableEntry_t

anonymous enum

Enumerator
NWK_RD_STATE_WAIT_FOR_ROUTE

static void nwkRouteDiscoveryDone ( NwkRouteDiscoveryTableEntry_t *  entry, bool  status  )

static

References NwkRouteDiscoveryTableEntry_t::dstAddr, NwkFrame_t::header, NwkFrameHeader_t::multicast, NwkRouteDiscoveryTableEntry_t::multicast, NWK_NO_ROUTE_STATUS, NWK_RD_STATE_WAIT_FOR_ROUTE, NwkFrameHeader_t::nwkDstAddr, NwkFrameHeader_t::nwkFcf, nwkFrameNext(), nwkTxConfirm(), nwkTxFrame(), and NwkFrame_t::state.

Referenced by nwkRouteDiscoveryTimerHandler().

static NwkRouteDiscoveryTableEntry_t * nwkRouteDiscoveryFindEntry ( uint16_t  src, uint16_t  dst, uint8_t  multicast  )

static

References NWK_ROUTE_DISCOVERY_TABLE_SIZE.

Referenced by nwkRouteDiscoveryReplyReceived(), nwkRouteDiscoveryRequest(), and nwkRouteDiscoveryRequestReceived().

void nwkRouteDiscoveryInit

(

void

)

Initializes the Route Discovery module.

References SYS_Timer_t::handler, SYS_Timer_t::interval, SYS_Timer_t::mode, NWK_ROUTE_DISCOVERY_TABLE_SIZE, NWK_ROUTE_DISCOVERY_TIMER_INTERVAL, nwkRouteDiscoveryTimerHandler(), SYS_TIMER_INTERVAL_MODE, and NwkRouteDiscoveryTableEntry_t::timeout.

Referenced by NWK_Init().

static NwkRouteDiscoveryTableEntry_t * nwkRouteDiscoveryNewEntry ( void  )

static

References NwkRouteDiscoveryTableEntry_t::forwardLinkQuality, NWK_ROUTE_DISCOVERY_NO_LINK, NWK_ROUTE_DISCOVERY_TABLE_SIZE, NWK_ROUTE_DISCOVERY_TIMEOUT, NwkRouteDiscoveryTableEntry_t::reverseLinkQuality, SYS_TimerStart(), and NwkRouteDiscoveryTableEntry_t::timeout.

Referenced by nwkRouteDiscoveryRequest(), and nwkRouteDiscoveryRequestReceived().

bool nwkRouteDiscoveryReplyReceived

(

NWK_DataInd_t *

ind

)

References NwkIb_t::addr, NWK_DataInd_t::data, NwkCommandRouteReply_t::dstAddr, NwkCommandRouteReply_t::forwardLinkQuality, if(), NWK_DataInd_t::lqi, NwkCommandRouteReply_t::multicast, nwkIb, nwkRouteDiscoveryFindEntry(), nwkRouteDiscoverySendReply(), nwkRouteDiscoveryUpdateLq(), nwkRouteUpdateEntry(), NwkCommandRouteReply_t::reverseLinkQuality, NWK_DataInd_t::size, NWK_DataInd_t::srcAddr, and NwkCommandRouteReply_t::srcAddr.

Referenced by nwkRxSeriveDataInd().

void nwkRouteDiscoveryRequest

(

NwkFrame_t *

frame

)

References NwkIb_t::addr, NwkRouteDiscoveryTableEntry_t::dstAddr, NwkFrame_t::header, NwkFrameHeader_t::multicast, NwkRouteDiscoveryTableEntry_t::multicast, NWK_BROADCAST_ADDR, NWK_NO_ROUTE_STATUS, NWK_RD_STATE_WAIT_FOR_ROUTE, NWK_ROUTE_DISCOVERY_BEST_LINK_QUALITY, NwkFrameHeader_t::nwkDstAddr, NwkFrameHeader_t::nwkFcf, nwkIb, nwkRouteDiscoveryFindEntry(), nwkRouteDiscoveryNewEntry(), nwkRouteDiscoverySendRequest(), nwkTxConfirm(), NwkRouteDiscoveryTableEntry_t::senderAddr, NwkRouteDiscoveryTableEntry_t::srcAddr, and NwkFrame_t::state.

Referenced by nwkRoutePrepareTx().

bool nwkRouteDiscoveryRequestReceived

(

NWK_DataInd_t *

ind

)

References NwkIb_t::addr, NWK_DataInd_t::data, NwkCommandRouteRequest_t::dstAddr, if(), NwkCommandRouteRequest_t::linkQuality, NWK_DataInd_t::lqi, NwkCommandRouteRequest_t::multicast, NWK_ROUTE_DISCOVERY_BEST_LINK_QUALITY, NWK_ROUTE_NON_ROUTING, nwkIb, nwkRouteDiscoveryFindEntry(), nwkRouteDiscoveryNewEntry(), nwkRouteDiscoverySendReply(), nwkRouteDiscoverySendRequest(), nwkRouteDiscoveryUpdateLq(), nwkRouteUpdateEntry(), NWK_DataInd_t::size, NWK_DataInd_t::srcAddr, and NwkCommandRouteRequest_t::srcAddr.

Referenced by nwkRxSeriveDataInd().

static void nwkRouteDiscoverySendReply ( NwkRouteDiscoveryTableEntry_t *  entry, uint8_t  flq, uint8_t  rlq  )

static

References NwkRouteDiscoveryTableEntry_t::dstAddr, NwkCommandRouteReply_t::dstAddr, NwkCommandRouteReply_t::forwardLinkQuality, NwkFrame_t::header, NwkCommandRouteReply_t::id, NwkRouteDiscoveryTableEntry_t::multicast, NwkCommandRouteReply_t::multicast, NWK_COMMAND_ROUTE_REPLY, NWK_TX_CONTROL_DIRECT_LINK, NwkFrameHeader_t::nwkDstAddr, nwkFrameAlloc(), nwkFrameCommandInit(), nwkTxFrame(), NwkFrame_t::payload, NwkCommandRouteReply_t::reverseLinkQuality, NwkRouteDiscoveryTableEntry_t::senderAddr, NwkFrame_t::size, NwkRouteDiscoveryTableEntry_t::srcAddr, NwkCommandRouteReply_t::srcAddr, and NwkFrame_t::tx.

Referenced by nwkRouteDiscoveryReplyReceived(), and nwkRouteDiscoveryRequestReceived().

static bool nwkRouteDiscoverySendRequest ( NwkRouteDiscoveryTableEntry_t *  entry, uint8_t  lq  )

static

References NwkRouteDiscoveryTableEntry_t::dstAddr, NwkCommandRouteRequest_t::dstAddr, NwkFrame_t::header, NwkCommandRouteRequest_t::id, NwkFrameHeader_t::linkLocal, NwkCommandRouteRequest_t::linkQuality, NwkRouteDiscoveryTableEntry_t::multicast, NwkCommandRouteRequest_t::multicast, NWK_BROADCAST_ADDR, NWK_COMMAND_ROUTE_REQUEST, NwkFrameHeader_t::nwkDstAddr, NwkFrameHeader_t::nwkFcf, nwkFrameAlloc(), nwkFrameCommandInit(), nwkTxFrame(), NwkFrame_t::payload, NwkFrame_t::size, NwkRouteDiscoveryTableEntry_t::srcAddr, NwkCommandRouteRequest_t::srcAddr, and NwkFrame_t::tx.

Referenced by nwkRouteDiscoveryRequest(), and nwkRouteDiscoveryRequestReceived().

static void nwkRouteDiscoveryTimerHandler ( SYS_Timer_t *  timer )

static

References NwkIb_t::addr, NWK_ROUTE_DISCOVERY_TABLE_SIZE, NWK_ROUTE_DISCOVERY_TIMER_INTERVAL, nwkIb, nwkRouteDiscoveryDone(), NwkRouteDiscoveryTableEntry_t::reverseLinkQuality, NwkRouteDiscoveryTableEntry_t::srcAddr, SYS_TimerStart(), and NwkRouteDiscoveryTableEntry_t::timeout.

Referenced by nwkRouteDiscoveryInit().

static uint8_t nwkRouteDiscoveryUpdateLq ( uint8_t  lqa, uint8_t  lqb  )

static

Referenced by nwkRouteDiscoveryReplyReceived(), and nwkRouteDiscoveryRequestReceived().

NwkRouteDiscoveryTableEntry_t nwkRouteDiscoveryTable[NWK_ROUTE_DISCOVERY_TABLE_SIZE]

static

SYS_Timer_t nwkRouteDiscoveryTimer

static