dsr_wlan_mac.pr.c

afit的ad hoc路由协议源码

static void			wlan_higher_layer_data_arrival ();
static void			wlan_physical_layer_data_arrival ();
static void			wlan_hlpk_enqueue (Packet* hld_pkptr, int dest_addr);
Boolean 			wlan_tuple_find (int sta_addr, int seq_id, int frag_num);
static void			wlan_data_process (Packet* seg_pkptr,int dest_addr, int sta_addr, int final_dest_addr, int frag_num, int more_frag, int pkt_id);
static void			wlan_accepted_frame_stats_update (Packet* seg_pkptr);
static void			wlan_interrupts_process ();
static void 		wlan_prepare_frame_to_send (int frame_type);
static void			wlan_frame_transmit ();
static void			wlan_schedule_deference ();
static void			wlan_frame_discard ();
static void			wlan_mac_rcv_channel_status_update (int channel_id);
static void			wlan_mac_error (const char* msg1, const char* msg2, const char* msg3);


/* End of Header Block */


#if !defined (VOSD_NO_FIN)
#undef	BIN
#undef	BOUT
#define	BIN		FIN_LOCAL_FIELD(last_line_passed) = __LINE__ - _block_origin;
#define	BOUT	BIN
#define	BINIT	FIN_LOCAL_FIELD(last_line_passed) = 0; _block_origin = __LINE__;
#else
#define	BINIT
#endif /* #if !defined (VOSD_NO_FIN) */



/* State variable definitions */
typedef struct
	{
	/* Internal state tracking for FSM */
	FSM_SYS_STATE
	/* State Variables */
	int	                    		retry_count;
	int	                    		intrpt_type;
	WlanT_Mac_Intrpt_Code	  		intrpt_code;
	int	                    		my_address;
	Objid	                  		my_objid;
	Objid	                  		my_node_objid;
	Objid	                  		my_subnet_objid;
	List*	                  		hld_list_ptr;
	double	                 		operational_speed;
	int	                    		frag_threshold;
	int	                    		packet_seq_number;
	int	                    		packet_frag_number;
	int	                    		destination_addr;
	Sbhandle	               		fragmentation_buffer_ptr;
	WlanT_Mac_Frame_Type	   		fresp_to_send;
	double	                 		nav_duration;
	int	                    		rts_threshold;
	int	                    		duplicate_entry;
	WlanT_Mac_Frame_Type	   		expected_frame_type;
	int	                    		remote_sta_addr;
	double	                 		backoff_slots;
	Stathandle	             		packet_load_handle;
	double	                 		intrpt_time;
	Packet *	               		wlan_transmit_frame_copy_ptr;
	Stathandle	             		backoff_slots_handle;
	int	                    		instrm_from_mac_if;
	int	                    		outstrm_to_mac_if;
	int	                    		num_fragments;
	int	                    		remainder_size;
	List*	                  		defragmentation_list_ptr;
	WlanT_Mac_Flags*	       		wlan_flags;
	OmsT_Aa_Address_Handle	 		oms_aa_handle;
	double	                 		current_time;
	double	                 		rcv_idle_time;
	WlanT_Mac_Duplicate_Buffer_Entry**			duplicate_list_ptr;
	Pmohandle	              		hld_pmh;
	int	                    		max_backoff;
	char	                   		current_state_name [32];
	Stathandle	             		hl_packets_rcvd;
	Stathandle	             		media_access_delay;
	Stathandle	             		ete_delay_handle;
	Stathandle	             		global_ete_delay_handle;
	Stathandle	             		global_throughput_handle;
	Stathandle	             		global_load_handle;
	Stathandle	             		global_dropped_data_handle;
	Stathandle	             		global_mac_delay_handle;
	Stathandle	             		ctrl_traffic_rcvd_handle_inbits;
	Stathandle	             		ctrl_traffic_sent_handle_inbits;
	Stathandle	             		ctrl_traffic_rcvd_handle;
	Stathandle	             		ctrl_traffic_sent_handle;
	Stathandle	             		data_traffic_rcvd_handle_inbits;
	Stathandle	             		data_traffic_sent_handle_inbits;
	Stathandle	             		data_traffic_rcvd_handle;
	Stathandle	             		data_traffic_sent_handle;
	double	                 		sifs_time;
	double	                 		slot_time;
	int	                    		cw_min;
	int	                    		cw_max;
	double	                 		difs_time;
	Stathandle	             		channel_reserv_handle;
	Stathandle	             		retrans_handle;
	Stathandle	             		throughput_handle;
	int	                    		long_retry_limit;
	int	                    		short_retry_limit;
	int	                    		retry_limit;
	WlanT_Mac_Frame_Type	   		last_frametx_type;
	Evhandle	               		deference_evh;
	Evhandle	               		backoff_elapsed_evh;
	Evhandle	               		frame_timeout_evh;
	double	                 		eifs_time;
	int	                    		i_strm;
	Boolean	                		wlan_trace_active;
	int	                    		pkt_in_service;
	Stathandle	             		bits_load_handle;
	int	                    		ap_flag;
	int	                    		bss_flag;
	int	                    		ap_mac_address;
	int	                    		hld_max_size;
	double	                 		max_receive_lifetime;
	Boolean	                		accept_large_packets;
	WlanT_Phy_Char_Code	    		phy_char_flag;
	OmsT_Aa_Address_Handle	 		oms_aa_wlan_handle;
	int	                    		total_hlpk_size;
	Stathandle	             		drop_packet_handle;
	Stathandle	             		drop_packet_handle_inbits;
	Log_Handle	             		drop_pkt_log_handle;
	int	                    		drop_pkt_entry_log_flag;
	int	                    		packet_size;
	double	                 		receive_time;
	Ici*	                   		llc_iciptr;
	int	                    		rcv_channel_status;
	int*	                   		bss_stn_list;
	int	                    		bss_stn_count;
	int	                    		bss_id;
	int	                    		data_packet_type;
	int	                    		data_packet_dest;
	int	                    		data_packet_final_dest;
	} dsr_wlan_mac_state;

#define pr_state_ptr            		((dsr_wlan_mac_state*) SimI_Mod_State_Ptr)
#define retry_count             		pr_state_ptr->retry_count
#define intrpt_type             		pr_state_ptr->intrpt_type
#define intrpt_code             		pr_state_ptr->intrpt_code
#define my_address              		pr_state_ptr->my_address
#define my_objid                		pr_state_ptr->my_objid
#define my_node_objid           		pr_state_ptr->my_node_objid
#define my_subnet_objid         		pr_state_ptr->my_subnet_objid
#define hld_list_ptr            		pr_state_ptr->hld_list_ptr
#define operational_speed       		pr_state_ptr->operational_speed
#define frag_threshold          		pr_state_ptr->frag_threshold
#define packet_seq_number       		pr_state_ptr->packet_seq_number
#define packet_frag_number      		pr_state_ptr->packet_frag_number
#define destination_addr        		pr_state_ptr->destination_addr
#define fragmentation_buffer_ptr		pr_state_ptr->fragmentation_buffer_ptr
#define fresp_to_send           		pr_state_ptr->fresp_to_send
#define nav_duration            		pr_state_ptr->nav_duration
#define rts_threshold           		pr_state_ptr->rts_threshold
#define duplicate_entry         		pr_state_ptr->duplicate_entry
#define expected_frame_type     		pr_state_ptr->expected_frame_type
#define remote_sta_addr         		pr_state_ptr->remote_sta_addr
#define backoff_slots           		pr_state_ptr->backoff_slots
#define packet_load_handle      		pr_state_ptr->packet_load_handle
#define intrpt_time             		pr_state_ptr->intrpt_time
#define wlan_transmit_frame_copy_ptr		pr_state_ptr->wlan_transmit_frame_copy_ptr
#define backoff_slots_handle    		pr_state_ptr->backoff_slots_handle
#define instrm_from_mac_if      		pr_state_ptr->instrm_from_mac_if
#define outstrm_to_mac_if       		pr_state_ptr->outstrm_to_mac_if
#define num_fragments           		pr_state_ptr->num_fragments
#define remainder_size          		pr_state_ptr->remainder_size
#define defragmentation_list_ptr		pr_state_ptr->defragmentation_list_ptr
#define wlan_flags              		pr_state_ptr->wlan_flags
#define oms_aa_handle           		pr_state_ptr->oms_aa_handle
#define current_time            		pr_state_ptr->current_time
#define rcv_idle_time           		pr_state_ptr->rcv_idle_time
#define duplicate_list_ptr      		pr_state_ptr->duplicate_list_ptr
#define hld_pmh                 		pr_state_ptr->hld_pmh
#define max_backoff             		pr_state_ptr->max_backoff
#define current_state_name      		pr_state_ptr->current_state_name
#define hl_packets_rcvd         		pr_state_ptr->hl_packets_rcvd
#define media_access_delay      		pr_state_ptr->media_access_delay
#define ete_delay_handle        		pr_state_ptr->ete_delay_handle
#define global_ete_delay_handle 		pr_state_ptr->global_ete_delay_handle
#define global_throughput_handle		pr_state_ptr->global_throughput_handle
#define global_load_handle      		pr_state_ptr->global_load_handle
#define global_dropped_data_handle		pr_state_ptr->global_dropped_data_handle
#define global_mac_delay_handle 		pr_state_ptr->global_mac_delay_handle
#define ctrl_traffic_rcvd_handle_inbits		pr_state_ptr->ctrl_traffic_rcvd_handle_inbits
#define ctrl_traffic_sent_handle_inbits		pr_state_ptr->ctrl_traffic_sent_handle_inbits
#define ctrl_traffic_rcvd_handle		pr_state_ptr->ctrl_traffic_rcvd_handle
#define ctrl_traffic_sent_handle		pr_state_ptr->ctrl_traffic_sent_handle
#define data_traffic_rcvd_handle_inbits		pr_state_ptr->data_traffic_rcvd_handle_inbits
#define data_traffic_sent_handle_inbits		pr_state_ptr->data_traffic_sent_handle_inbits
#define data_traffic_rcvd_handle		pr_state_ptr->data_traffic_rcvd_handle
#define data_traffic_sent_handle		pr_state_ptr->data_traffic_sent_handle
#define sifs_time               		pr_state_ptr->sifs_time
#define slot_time               		pr_state_ptr->slot_time
#define cw_min                  		pr_state_ptr->cw_min
#define cw_max                  		pr_state_ptr->cw_max
#define difs_time               		pr_state_ptr->difs_time
#define channel_reserv_handle   		pr_state_ptr->channel_reserv_handle
#define retrans_handle          		pr_state_ptr->retrans_handle
#define throughput_handle       		pr_state_ptr->throughput_handle
#define long_retry_limit        		pr_state_ptr->long_retry_limit
#define short_retry_limit       		pr_state_ptr->short_retry_limit
#define retry_limit             		pr_state_ptr->retry_limit
#define last_frametx_type       		pr_state_ptr->last_frametx_type
#define deference_evh           		pr_state_ptr->deference_evh
#define backoff_elapsed_evh     		pr_state_ptr->backoff_elapsed_evh
#define frame_timeout_evh       		pr_state_ptr->frame_timeout_evh
#define eifs_time               		pr_state_ptr->eifs_time
#define i_strm                  		pr_state_ptr->i_strm
#define wlan_trace_active       		pr_state_ptr->wlan_trace_active
#define pkt_in_service          		pr_state_ptr->pkt_in_service
#define bits_load_handle        		pr_state_ptr->bits_load_handle
#define ap_flag                 		pr_state_ptr->ap_flag
#define bss_flag                		pr_state_ptr->bss_flag
#define ap_mac_address          		pr_state_ptr->ap_mac_address
#define hld_max_size            		pr_state_ptr->hld_max_size
#define max_receive_lifetime    		pr_state_ptr->max_receive_lifetime
#define accept_large_packets    		pr_state_ptr->accept_large_packets
#define phy_char_flag           		pr_state_ptr->phy_char_flag
#define oms_aa_wlan_handle      		pr_state_ptr->oms_aa_wlan_handle
#define total_hlpk_size         		pr_state_ptr->total_hlpk_size
#define drop_packet_handle      		pr_state_ptr->drop_packet_handle
#define drop_packet_handle_inbits		pr_state_ptr->drop_packet_handle_inbits
#define drop_pkt_log_handle     		pr_state_ptr->drop_pkt_log_handle
#define drop_pkt_entry_log_flag 		pr_state_ptr->drop_pkt_entry_log_flag
#define packet_size             		pr_state_ptr->packet_size
#define receive_time            		pr_state_ptr->receive_time
#define llc_iciptr              		pr_state_ptr->llc_iciptr
#define rcv_channel_status      		pr_state_ptr->rcv_channel_status
#define bss_stn_list            		pr_state_ptr->bss_stn_list
#define bss_stn_count           		pr_state_ptr->bss_stn_count
#define bss_id                  		pr_state_ptr->bss_id
#define data_packet_type        		pr_state_ptr->data_packet_type
#define data_packet_dest        		pr_state_ptr->data_packet_dest
#define data_packet_final_dest  		pr_state_ptr->data_packet_final_dest

/* This macro definition will define a local variable called	*/
/* "op_sv_ptr" in each function containing a FIN statement.	*/
/* This variable points to the state variable data structure,	*/
/* and can be used from a C debugger to display their values.	*/
#undef FIN_PREAMBLE
#define FIN_PREAMBLE	dsr_wlan_mac_state *op_sv_ptr = pr_state_ptr;


/* Function Block */

enum { _block_origin = __LINE__ };
static void
wlan_mac_sv_init ()
	{
	Objid					mac_params_comp_attr_objid;
	Objid					params_attr_objid;
	Objid					rx_objid;
	Objid					tx_objid;
	Objid					chann_params_comp_attr_objid;
	Objid					subchann_params_attr_objid;
	Objid					chann_objid;
	Objid					sub_chann_objid;
	int						num_chann;
	char					subnet_name [512];
	double					bandwidth;
	double					frequency;
	int						i;
	char                    bss_name[128];
	Log_Handle				bssid_changed_log_handle;
	char					ip_addr_mode [64];
	
	
	/**	1. Initialize state variables.						**/
	/** 2. Read model attribute values in variables.	    **/
	/** 3. Create global lists								**/
	/** 4. Register statistics handlers						**/
	FIN (wlan_mac_sv_init ());

	/* object id of the surrounding processor.				*/
	my_objid = op_id_self ();

	/* Obtain the node's object identifier					*/
	my_node_objid = op_topo_parent (my_objid);

	/* Obtain subnet objid.									*/
	my_subnet_objid = op_topo_parent (my_node_objid);

	/* Obtain the values assigned to the various attributes	*/
	op_ima_obj_attr_get (my_objid, "Wireless LAN Parameters", &mac_params_comp_attr_objid);
    params_attr_objid = op_topo_child (mac_params_comp_attr_objid, OPC_OBJTYPE_GENERIC, 0);

	/* Determine the assigned MAC address.					*/
	op_ima_obj_attr_get (my_objid, "station_address", &my_address);

	/* Obtain an address handle for resolving WLAN MAC addresses.				*/
	oms_aa_handle = oms_aa_address_handle_get ("MAC Addresses", "station_address");

 	/* Obtain the BSS_Id attribute to determine if BSS based network is used	*/ 
	op_ima_obj_attr_get (params_attr_objid, "BSS Identifier", &bss_id);
	
	/* Update the global variable if this is the first node to come up. If not the	*/ 
	/* first node, then check for mismatches. A subnet can be a traditional subnet	*/
	/* (i.e. a subnet with one BSS,this is the existing model) or a  BSS based		*/