/********************************************************************* * * Filename: irlap.h * Version: 0.8 * Description: An IrDA LAP driver for Linux * Status: Experimental. * Author: Dag Brattli * Created at: Mon Aug 4 20:40:53 1997 * Modified at: Sun May 9 11:38:18 1999 * Modified by: Dag Brattli * * Copyright (c) 1998-1999 Dag Brattli , All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * Neither Dag Brattli nor University of Tromsų admit liability nor * provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * ********************************************************************/ #ifndef IRLAP_H #define IRLAP_H #include #include #include #include #include #include #include #define LAP_RELIABLE 1 #define LAP_UNRELIABLE 0 #define LAP_ADDR_HEADER 1 /* IrLAP Address Header */ #define LAP_CTRL_HEADER 1 /* IrLAP Control Header */ #define LAP_COMP_HEADER 1 /* IrLAP Compression Header */ #ifdef CONFIG_IRDA_COMPRESSION # define LAP_MAX_HEADER (LAP_ADDR_HEADER + LAP_CTRL_HEADER + LAP_COMP_HEADER) # define IRDA_COMPRESSED 1 # define IRDA_NORMAL 0 #else #define LAP_MAX_HEADER (LAP_ADDR_HEADER + LAP_CTRL_HEADER) #endif #define BROADCAST 0xffffffff /* Broadcast device address */ #define CBROADCAST 0xfe /* Connection broadcast address */ #define XID_FORMAT 0x01 /* Discovery XID format */ #define LAP_WINDOW_SIZE 8 #define MAX_CONNECTIONS 1 #define NR_EXPECTED 1 #define NR_UNEXPECTED 0 #define NR_INVALID -1 #define NS_EXPECTED 1 #define NS_UNEXPECTED 0 #define NS_INVALID -1 #ifdef CONFIG_IRDA_COMPRESSION /* * Just some shortcuts (may give you strange compiler errors if you change * them :-) */ #define irda_compress (*self->compessor.cp->compress) #define irda_comp_free (*self->compressor.cp->comp_free) #define irda_decompress (*self->decompressor.cp->decompress) #define irda_decomp_free (*self->decompressor.cp->decomp_free) #define irda_incomp (*self->decompressor.cp->incomp) struct irda_compressor { QUEUE queue; struct compressor *cp; void *state; /* Not used by IrDA */ }; #endif /* Main structure of IrLAP */ struct irlap_cb { QUEUE q; /* Must be first */ int magic; struct irda_device *irdev; struct device *netdev; /* Connection state */ volatile IRLAP_STATE state; /* Current state */ /* Timers used by IrLAP */ struct timer_list query_timer; struct timer_list slot_timer; struct timer_list discovery_timer; struct timer_list final_timer; struct timer_list poll_timer; struct timer_list wd_timer; struct timer_list backoff_timer; /* Timeouts which will be different with different turn time */ int slot_timeout; int poll_timeout; int final_timeout; int wd_timeout; struct sk_buff_head tx_list; /* Frames to be transmitted */ __u8 caddr; /* Connection address */ __u32 saddr; /* Source device address */ __u32 daddr; /* Destination device address */ int retry_count; /* Times tried to establish connection */ int add_wait; /* True if we are waiting for frame */ __u8 connect_pending; __u8 disconnect_pending; /* To send a faster RR if tx queue empty */ #ifdef CONFIG_IRDA_FAST_RR int fast_RR_timeout; int fast_RR; #endif int N1; /* N1 * F-timer = Negitiated link disconnect warning threshold */ int N2; /* N2 * F-timer = Negitiated link disconnect time */ int N3; /* Connection retry count */ int local_busy; int remote_busy; int xmitflag; __u8 vs; /* Next frame to be sent */ __u8 vr; /* Next frame to be received */ /* int tmp; */ __u8 va; /* Last frame acked */ int window; /* Nr of I-frames allowed to send */ int window_size; /* Current negotiated window size */ int window_bytes; /* Number of bytes allowed to send */ int bytes_left; /* Number of bytes allowed to transmit */ struct sk_buff_head wx_list; __u8 ack_required; /* XID parameters */ __u8 S; /* Number of slots */ __u8 slot; /* Random chosen slot */ __u8 s; /* Current slot */ int frame_sent; /* Have we sent reply? */ hashbin_t *discovery_log; discovery_t *discovery_cmd; struct qos_info qos_tx; /* QoS requested by peer */ struct qos_info qos_rx; /* QoS requested by self */ struct notify_t notify; /* Callbacks to IrLMP */ int mtt_required; /* Minumum turnaround time required */ int xbofs_delay; /* Nr of XBOF's used to MTT */ int bofs_count; /* Negotiated extra BOFs */ struct irda_statistics stats; #ifdef CONFIG_IRDA_COMPRESSION struct irda_compressor compressor; struct irda_compressor decompressor; #endif }; extern hashbin_t *irlap; /* * Function prototypes */ int irlap_init( void); void irlap_cleanup( void); struct irlap_cb *irlap_open( struct irda_device *dev); void irlap_close( struct irlap_cb *self); void irlap_connect_request( struct irlap_cb *self, __u32 daddr, struct qos_info *qos, int sniff); void irlap_connect_response( struct irlap_cb *self, struct sk_buff *skb); void irlap_connect_indication( struct irlap_cb *self, struct sk_buff *skb); void irlap_connect_confirm( struct irlap_cb *, struct sk_buff *skb); inline void irlap_data_indication( struct irlap_cb *, struct sk_buff *); inline void irlap_unit_data_indication( struct irlap_cb *, struct sk_buff *); inline void irlap_data_request( struct irlap_cb *, struct sk_buff *, int reliable); void irlap_disconnect_request( struct irlap_cb *); void irlap_disconnect_indication( struct irlap_cb *, LAP_REASON reason); void irlap_status_indication( int quality_of_link); void irlap_test_request( __u8 *info, int len); void irlap_discovery_request(struct irlap_cb *, discovery_t *discovery); void irlap_discovery_confirm(struct irlap_cb *, hashbin_t *discovery_log); void irlap_discovery_indication(struct irlap_cb *, discovery_t *discovery); void irlap_reset_indication( struct irlap_cb *self); void irlap_reset_confirm(void); void irlap_update_nr_received( struct irlap_cb *, int nr); int irlap_validate_nr_received( struct irlap_cb *, int nr); int irlap_validate_ns_received( struct irlap_cb *, int ns); int irlap_generate_rand_time_slot( int S, int s); void irlap_initiate_connection_state( struct irlap_cb *); void irlap_flush_all_queues(struct irlap_cb *); void irlap_change_speed(struct irlap_cb *, int); void irlap_wait_min_turn_around(struct irlap_cb *, struct qos_info *); void irlap_init_qos_capabilities(struct irlap_cb *, struct qos_info *); void irlap_apply_default_connection_parameters(struct irlap_cb *self); void irlap_apply_connection_parameters(struct irlap_cb *, struct qos_info *); extern inline __u8 irlap_get_header_size(struct irlap_cb *self) { return 2; } #endif