Buffer Management (large and small buffers): provides services for dynamically allocating and freeing memory buffers.

Data Structures
struct	buffer_t
	Buffer structure holding information of each buffer. More...

Macros
#define	BMM_BUFFER_POINTER(buf) ((buf)->body)
	This macro provides the pointer to the corresponding body of the supplied buffer header. More...

Functions
buffer_t *	bmm_buffer_alloc (uint8_t size)
	Allocates a buffer. More...

void	bmm_buffer_free (buffer_t *pbuffer)
	Frees up a buffer. More...

__PACK__RST_DATA__ void	bmm_buffer_init (void)
	Initializes the buffer module. More...

Variables
uint8_t *	buffer_t::body
	Pointer to the buffer body. More...

struct buffer_tag *	buffer_t::next
	Pointer to next free buffer. More...

#define BMM_BUFFER_POINTER ( buf ) ((buf)->body)

This macro provides the pointer to the corresponding body of the supplied buffer header.

Referenced by build_null_data_frame(), dispatch_event(), find_buffer_cb(), gen_mlme_poll_conf(), gen_mlme_start_conf(), gen_rx_enable_conf(), handle_exp_persistence_timer(), handle_received_frame_irq(), mac_awake_disassociate(), mac_awake_scan(), mac_build_and_tx_beacon(), mac_build_and_tx_data_req(), mac_gen_mcps_data_conf(), mac_gen_mlme_associate_conf(), mac_gen_mlme_disassociate_conf(), mac_handle_tx_null_data_frame(), mac_mlme_comm_status(), mac_prep_disassoc_conf(), mac_process_associate_request(), mac_process_beacon_frame(), mac_process_data_frame(), mac_process_data_request(), mac_process_disassociate_notification(), mac_process_orphan_notification(), mac_process_orphan_realign(), mac_process_tal_data_ind(), mac_process_tal_tx_status(), mac_t_scan_duration_cb(), mac_tx_coord_realignment_command(), mcps_data_conf(), mcps_data_ind(), mcps_data_request(), mcps_purge_conf(), mcps_purge_request(), mlme_associate_conf(), mlme_associate_ind(), mlme_associate_request(), mlme_associate_response(), mlme_beacon_notify_ind(), mlme_comm_status_ind(), mlme_disassociate_conf(), mlme_disassociate_ind(), mlme_disassociate_request(), mlme_get_conf(), mlme_get_request(), mlme_orphan_ind(), mlme_poll_conf(), mlme_poll_request(), mlme_reset_conf(), mlme_reset_request(), mlme_rx_enable_conf(), mlme_rx_enable_request(), mlme_scan_conf(), mlme_scan_request(), mlme_set_conf(), mlme_set_request(), mlme_start_conf(), mlme_start_request(), mlme_sync_loss_ind(), parse_mpdu(), process_incoming_frame(), scan_proceed(), send_reset_conf(), send_scan_cmd(), tal_ed_end_cb(), tx_pan_id_conf_notif(), wpan_mcps_data_req(), wpan_mcps_purge_req(), wpan_mlme_associate_req(), wpan_mlme_associate_resp(), wpan_mlme_disassociate_req(), wpan_mlme_get_req(), wpan_mlme_orphan_resp(), wpan_mlme_poll_req(), wpan_mlme_reset_req(), wpan_mlme_rx_enable_req(), wpan_mlme_scan_req(), wpan_mlme_set_req(), and wpan_mlme_start_req().

buffer_t* bmm_buffer_alloc ( uint8_t size )

Allocates a buffer.

This function allocates a buffer and returns a pointer to the buffer. The same pointer should be used while freeing the buffer.User should call BMM_BUFFER_POINTER(buf) to get the pointer to buffer user area.

Parameters

size	size of buffer to be allocated.

Returns: pointer to the buffer allocated, NULL if buffer not available.

References LARGE_BUFFER_SIZE, qmm_queue_remove(), and SMALL_BUFFER_SIZE.

Referenced by build_null_data_frame(), handle_received_frame_irq(), mac_awake_scan(), mac_build_and_tx_data_req(), parse_mpdu(), tal_init(), tal_task(), tx_pan_id_conf_notif(), wpan_mcps_data_req(), wpan_mcps_purge_req(), wpan_mlme_associate_req(), wpan_mlme_associate_resp(), wpan_mlme_disassociate_req(), wpan_mlme_get_req(), wpan_mlme_orphan_resp(), wpan_mlme_poll_req(), wpan_mlme_reset_req(), wpan_mlme_rx_enable_req(), wpan_mlme_scan_req(), wpan_mlme_set_req(), and wpan_mlme_start_req().

void bmm_buffer_free ( buffer_t * pbuffer )

Frees up a buffer.

This function frees up a buffer. The pointer passed to this function should be the pointer returned during buffer allocation. The result is unpredictable if an incorrect pointer is passed.

Parameters

pbuffer Pointer to buffer that has to be freed.

References qmm_queue_append().

Referenced by dispatch_event(), mac_awake_scan(), mac_buffer_purge(), mac_build_and_tx_data_req(), mac_handle_tx_null_data_frame(), mac_process_associate_request(), mac_process_associate_response(), mac_process_beacon_frame(), mac_process_beacon_request(), mac_process_coord_realign(), mac_process_data_frame(), mac_process_data_request(), mac_process_orphan_realign(), mac_process_tal_data_ind(), mac_process_tal_tx_status(), mcps_data_conf(), mcps_data_ind(), mcps_purge_conf(), mlme_associate_conf(), mlme_associate_ind(), mlme_associate_response(), mlme_beacon_notify_ind(), mlme_comm_status_ind(), mlme_disassociate_conf(), mlme_disassociate_ind(), mlme_get_conf(), mlme_orphan_ind(), mlme_poll_conf(), mlme_reset_conf(), mlme_rx_enable_conf(), mlme_scan_conf(), mlme_set_conf(), mlme_start_conf(), process_data_ind_not_transient(), qmm_queue_flush(), scan_proceed(), tal_reset(), tx_pan_id_conf_notif(), wpan_mcps_data_req(), wpan_mcps_purge_req(), wpan_mlme_associate_req(), wpan_mlme_associate_resp(), wpan_mlme_disassociate_req(), wpan_mlme_get_req(), wpan_mlme_orphan_resp(), wpan_mlme_poll_req(), wpan_mlme_reset_req(), wpan_mlme_rx_enable_req(), wpan_mlme_scan_req(), wpan_mlme_set_req(), and wpan_mlme_start_req().