Implements incoming frame handling in the MAC.

#include <compiler.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>
#include "return_val.h"
#include "pal.h"
#include "bmm.h"
#include "qmm.h"
#include "tal.h"
#include "ieee_const.h"
#include "mac_msg_const.h"
#include "mac_api.h"
#include "mac_msg_types.h"
#include "mac_data_structures.h"
#include "stack_config.h"
#include "mac_internal.h"
#include "mac.h"
#include "mac_config.h"
#include "mac_build_config.h"

Macros
#define	GET_PAN_COORDINATOR(spec) (((spec) & 0x4000) >> 14)

#define	GTS_DESCRIPTOR_COUNTER_MASK (0x07)

#define	PAN_ID_CONFLICT_PAYLOAD_LEN (1)

Functions
static void	check_for_pan_id_conflict_as_pc (bool in_scan)
	PAN-Id conflict detection as PAN-Coordinator. More...

static void	check_for_pan_id_conflict_non_pc (bool in_scan)
	PAN-Id conflict detection NOT as PAN-Coordinator. More...

void	mac_process_tal_data_ind (uint8_t *msg)
	Depending on received frame the appropriate function is called. More...

static bool	parse_mpdu (frame_info_t *frameptr)

static bool	process_data_ind_not_transient (buffer_t b_ptr, frame_info_t f_ptr)
	Continues processing a data indication from the TAL for non-polling and non-scanning states of the MAC (mac_poll_state == MAC_POLL_IDLE, mac_scan_state == MAC_SCAN_IDLE). More...

static bool	process_data_ind_scanning (buffer_t *b_ptr)
	Continues processing a data indication from the TAL for scanning states of the MAC (mac_scan_state == MAC_SCAN_IDLE). More...

void	tal_rx_frame_cb (frame_info_t *frame)
	Callback function called by TAL on reception of any frame. More...

static bool	tx_pan_id_conf_notif (void)
	Sends a PAN-Id conflict detection command frame. More...

#define GET_PAN_COORDINATOR ( spec ) (((spec) & 0x4000) >> 14)

Referenced by check_for_pan_id_conflict_as_pc(), and check_for_pan_id_conflict_non_pc().

#define GTS_DESCRIPTOR_COUNTER_MASK (0x07)

Referenced by parse_mpdu().

#define PAN_ID_CONFLICT_PAYLOAD_LEN (1)

Referenced by tx_pan_id_conf_notif().

static void check_for_pan_id_conflict_as_pc ( bool in_scan )

static

PAN-Id conflict detection as PAN-Coordinator.

This function handles the detection of PAN-Id Conflict detection in case the node is a PAN Coordinator.

Parameters

in_scan Indicates whether node is currently scanning

References frame_payload_t::beacon_data, GET_PAN_COORDINATOR, MAC_PAN_ID_CONFLICT, mac_parse_data, parse_tag::mac_payload_data, MAC_SCAN_ACTIVE_REQUEST_CONFIRM, mac_scan_orig_panid, MAC_SCAN_PASSIVE_REQUEST_CONFIRM, mac_sync_loss(), parse_tag::src_panid, and tal_pib.

Referenced by process_data_ind_not_transient(), and process_data_ind_scanning().

static void check_for_pan_id_conflict_non_pc ( bool in_scan )

static

PAN-Id conflict detection NOT as PAN-Coordinator.

This function handles the detection of PAN-Id Conflict detection in case the node is NOT a PAN Coordinator.

Parameters

in_scan Indicates whether node is currently scanning

References frame_payload_t::beacon_data, GET_PAN_COORDINATOR, address_field_t::long_address, mac_pib_tag::mac_CoordExtendedAddress, mac_pib_tag::mac_CoordShortAddress, mac_parse_data, parse_tag::mac_payload_data, mac_pib, MAC_SCAN_ACTIVE_REQUEST_CONFIRM, mac_scan_orig_panid, MAC_SCAN_PASSIVE_REQUEST_CONFIRM, address_field_t::short_address, parse_tag::src_addr, parse_tag::src_panid, tal_pib, and tx_pan_id_conf_notif().

Referenced by process_data_ind_not_transient(), and process_data_ind_scanning().

static bool parse_mpdu ( frame_info_t * frameptr )

static

References aMaxMACPayloadSize, Assert, frame_payload_t::assoc_req_data, frame_payload_t::assoc_response_data, ASSOCIATIONREQUEST, ASSOCIATIONRESPONSE, frame_payload_t::beacon_data, BEACONREQUEST, bmm_buffer_alloc(), BMM_BUFFER_POINTER, CLE16_TO_CPU_ENDIAN, mlme_comm_status_ind_tag::cmdcode, convert_byte_array_to_16_bit(), frame_payload_t::coord_realign_data, mac_coord_realign_tag::coord_short_addr, COORDINATORREALIGNMENT, frame_payload_t::data, DATAREQUEST, parse_tag::dest_addr, parse_tag::dest_addr_mode, frame_payload_t::disassoc_req_data, DISASSOCIATIONNOTIFICATION, mlme_comm_status_ind_tag::DstAddr, mlme_comm_status_ind_tag::DstAddrMode, parse_tag::fcf, FCF_FRAME_VERSION_2006, FCF_FRAMETYPE_BEACON, FCF_FRAMETYPE_DATA, FCF_FRAMETYPE_MAC_CMD, FCF_GET_FRAMETYPE, FCF_SECURITY_ENABLED, parse_tag::frame_type, GTS_DESCRIPTOR_COUNTER_MASK, mac_beacon_payload_tag::gts_spec, GTSREQUEST, LARGE_BUFFER_SIZE, address_field_t::long_address, parse_tag::mac_command, mac_extract_mhr_addr_info(), mac_nhle_q, mac_parse_data, parse_tag::mac_payload_data, parse_tag::mac_payload_length, MAC_SUCCESS, MLME_COMM_STATUS_INDICATION, frame_info_tag::mpdu, NUM_LONG_PEND_ADDR, NUM_SHORT_PEND_ADDR, ORPHANNOTIFICATION, mac_coord_realign_tag::pan_id, mlme_comm_status_ind_tag::PANId, PANIDCONFLICTNOTIFICAION, mac_data_payload_tag::payload, mac_beacon_payload_tag::pending_addr_spec, qmm_queue_append(), parse_tag::sequence_number, mac_assoc_response_tag::short_addr, mac_coord_realign_tag::short_addr, parse_tag::src_addr, parse_tag::src_addr_mode, mlme_comm_status_ind_tag::SrcAddr, mlme_comm_status_ind_tag::SrcAddrMode, mlme_comm_status_ind_tag::status, mac_beacon_payload_tag::superframe_spec, tal_pib, parse_tag::time_stamp, and frame_info_tag::time_stamp.

Referenced by mac_process_tal_data_ind().

static bool process_data_ind_not_transient	(	buffer_t *	b_ptr,
		frame_info_t *	f_ptr
	)

static

Continues processing a data indication from the TAL for non-polling and non-scanning states of the MAC (mac_poll_state == MAC_POLL_IDLE, mac_scan_state == MAC_SCAN_IDLE).

Parameters

b_ptr	Pointer to the buffer header.
f_ptr	Pointer to the frame_info_t structure.

Returns: bool True if frame has been processed, or false otherwise.

References Assert, ASSOCIATIONREQUEST, BEACONREQUEST, bmm_buffer_free(), BO_USED_FOR_MAC_PERS_TIME, check_for_pan_id_conflict_as_pc(), check_for_pan_id_conflict_non_pc(), COORDINATORREALIGNMENT, DATAREQUEST, DISASSOCIATIONNOTIFICATION, FAILURE, FCF_FRAMETYPE_BEACON, FCF_FRAMETYPE_DATA, FCF_FRAMETYPE_MAC_CMD, FCF_LONG_ADDR, FCF_SHORT_ADDR, FINAL_CAP_SLOT_DEFAULT, parse_tag::frame_type, FUNC_PTR, GTSREQUEST, indirect_data_q, MAC_ACTIVE_CAP, MAC_ASSOCIATED, mac_pib_tag::mac_AssociatedPANCoord, parse_tag::mac_command, mac_pib_tag::mac_CoordExtendedAddress, MAC_COORDINATOR, mac_pib_tag::mac_CoordShortAddress, mac_handle_tx_null_data_frame(), MAC_IDLE, mac_idle_trans(), MAC_PAN_COORD_STARTED, MAC_PAN_ID_CONFLICT, mac_parse_data, mac_pib, MAC_POLL_IDLE, mac_poll_state, mac_process_associate_request(), mac_process_beacon_frame(), mac_process_beacon_request(), mac_process_coord_realign(), mac_process_data_frame(), mac_process_data_request(), mac_process_disassociate_notification(), mac_process_orphan_notification(), MAC_SCAN_IDLE, mac_scan_state, mac_sleep_trans(), mac_state, MAC_SUCCESS, MAC_SYNC_BEFORE_ASSOC, mac_sync_loss(), MAC_SYNC_NEVER, MAC_SYNC_ONCE, mac_sync_state, MAC_SYNC_TRACKING_BEACON, mac_trx_wakeup(), macBeaconTxTime, NON_BEACON_NWK, ORPHANNOTIFICATION, pal_is_timer_running(), pal_timer_start(), pal_timer_stop(), PANIDCONFLICTNOTIFICAION, PHY_RX_ON, set_tal_pib_internal(), queue_tag::size, parse_tag::src_addr, parse_tag::src_addr_mode, parse_tag::src_panid, tal_add_time_symbols(), TAL_CONVERT_SYMBOLS_TO_US, TAL_CONVERT_US_TO_SYMBOLS, TAL_GET_BEACON_INTERVAL_TIME, TAL_GET_SUPERFRAME_DURATION_TIME, tal_pib, TAL_RADIO_WAKEUP_TIME_SYM, tal_rx_enable(), tal_sub_time_symbols(), frame_info_tag::time_stamp, TIMEOUT_ABSOLUTE, and TIMEOUT_RELATIVE.

Referenced by mac_process_tal_data_ind().

static bool process_data_ind_scanning ( buffer_t * b_ptr )

static

Continues processing a data indication from the TAL for scanning states of the MAC (mac_scan_state == MAC_SCAN_IDLE).

Parameters

b_ptr Pointer to the buffer header.

Returns: bool True if frame has been processed, or false otherwise.

References Assert, check_for_pan_id_conflict_as_pc(), check_for_pan_id_conflict_non_pc(), COORDINATORREALIGNMENT, FCF_FRAMETYPE_BEACON, FCF_FRAMETYPE_MAC_CMD, parse_tag::frame_type, MAC_ASSOCIATED, mac_pib_tag::mac_AssociatedPANCoord, parse_tag::mac_command, MAC_COORDINATOR, MAC_PAN_COORD_STARTED, mac_parse_data, mac_pib, mac_process_beacon_frame(), mac_process_orphan_realign(), MAC_SCAN_ACTIVE, MAC_SCAN_ED, MAC_SCAN_ORPHAN, MAC_SCAN_PASSIVE, mac_scan_state, mac_state, pal_timer_stop(), and T_Scan_Duration.

Referenced by mac_process_tal_data_ind().

void tal_rx_frame_cb ( frame_info_t * frame )

Callback function called by TAL on reception of any frame.

User call back function for frame reception.

This function pushes an event into the TAL-MAC queue, indicating a frame reception.

Parameters

frame Pointer to recived frame

References Assert, frame_info_tag::buffer_header, frame_info_tag::msg_type, qmm_queue_append(), TAL_DATA_INDICATION, and tal_mac_q.

Referenced by process_incoming_frame().

static bool tx_pan_id_conf_notif ( void )

static

Sends a PAN-Id conflict detection command frame.

This function is called in case a device (that is associated to a PAN Coordinator) detects a PAN-Id conflict situation.

Returns: True if the PAN-Id conflict notification is sent successfully, false otherwise

References bmm_buffer_alloc(), bmm_buffer_free(), BMM_BUFFER_POINTER, frame_info_tag::buffer_header, convert_16_bit_to_byte_array(), convert_64_bit_to_byte_array(), convert_spec_16_bit_to_byte_array(), CSMA_SLOTTED, CSMA_UNSLOTTED, FCF_ACK_REQUEST, FCF_FRAMETYPE_MAC_CMD, FCF_LONG_ADDR, FCF_PAN_ID_COMPRESSION, FCF_SET_DEST_ADDR_MODE, FCF_SET_FRAMETYPE, FCF_SET_SOURCE_ADDR_MODE, LARGE_BUFFER_SIZE, MAC_ASSOCIATED, mac_pib_tag::mac_CoordExtendedAddress, MAC_COORDINATOR, mac_pib_tag::mac_DSN, MAC_IDLE, mac_pib, MAC_START_REQUEST_CONFIRM, mac_state, MAC_SUCCESS, MAC_SYNC_BEFORE_ASSOC, mac_sync_state, MAKE_MAC_BUSY, frame_info_tag::mpdu, frame_info_tag::msg_type, NON_BEACON_NWK, PAN_ID_CONFLICT_PAYLOAD_LEN, PANIDCONFLICTNOTIFICAION, tal_pib, and tal_tx_frame().

Referenced by check_for_pan_id_conflict_non_pc().

Microchip® Advanced Software Framework

Macros

Functions