patch-2.1.132 linux/include/net/irda/irlap.h

• Lines: 233
• Date: Thu Dec 17 09:01:03 1998
• Orig file: v2.1.131/linux/include/net/irda/irlap.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.131/linux/include/net/irda/irlap.h linux/include/net/irda/irlap.h
@@ -0,0 +1,232 @@
+/*********************************************************************
+ *                
+ * Filename:      irlap.h
+ * Version:       0.3
+ * Description:   An IrDA LAP driver for Linux
+ * Status:        Experimental.
+ * Author:        Dag Brattli <dagb@cs.uit.no>
+ * Created at:    Mon Aug  4 20:40:53 1997
+ * Modified at:   Sat Dec 12 12:25:33 1998
+ * Modified by:   Dag Brattli <dagb@cs.uit.no>
+ * 
+ *     Copyright (c) 1998 Dag Brattli <dagb@cs.uit.no>, 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 <linux/config.h>
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/ppp_defs.h>
+#include <linux/ppp-comp.h>
+
+#include <net/irda/irlap_event.h>
+
+#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_HEADER  (LAP_ADDR_HEADER + LAP_CTRL_HEADER + LAP_COMP_HEADER)
+#  define IRDA_COMPRESSED 1
+#  define IRDA_NORMAL     0
+#else
+#define LAP_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 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 */
+
+#ifdef CONFIG_IRDA_FAST_RR
+	/* 
+	 *  To send a faster RR if tx queue empty 
+	 */
+	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? */
+
+	int discovery_count;
+	hashbin_t *discovery_log;
+ 	DISCOVERY *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_RECYCLE_RR
+	struct sk_buff *recycle_rr_skb;
+#endif
+
+#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 *discovery);
+void irlap_discovery_confirm( struct irlap_cb *, hashbin_t *discovery_log);
+void irlap_discovery_indication( struct irlap_cb *, DISCOVERY *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 *);
+
+#endif