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+/*********************************************************************
+ *
+ * Filename: irlmp.h
+ * Version: 0.3
+ * Description: IrDA Link Management Protocol (LMP) layer
+ * Status: Experimental.
+ * Author: Dag Brattli <dagb@cs.uit.no>
+ * Created at: Sun Aug 17 20:54:32 1997
+ * Modified at: Mon Dec 7 21:11:32 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 IRLMP_H
+#define IRLMP_H
+
+#include <linux/config.h>
+#include <linux/types.h>
+
+#include "irmod.h"
+#include "qos.h"
+#include "irlap.h"
+#include "irlmp_event.h"
+#include "irqueue.h"
+
+/* LSAP-SEL's */
+#define LSAP_MASK 0x7f
+#define LSAP_IAS 0x00
+#define LSAP_ANY 0xff
+
+/* Predefined LSAPs used by the various servers */
+#define TSAP_IRLAN 0x05
+#define LSAP_IRLPT 0x06
+#define TSAP_IROBEX 0x07
+#define TSAP_IRCOMM 0x08
+
+#define LMP_HEADER 2 /* Dest LSAP + Source LSAP */
+#define LMP_CONTROL_HEADER 4
+#define LMP_MAX_HEADER (LAP_HEADER+LMP_HEADER)
+
+#define LM_MAX_CONNECTIONS 10
+
+/* Hint bit positions for first hint byte */
+#define HINT_PNP 0x01
+#define HINT_PDA 0x02
+#define HINT_COMPUTER 0x04
+#define HINT_PRINTER 0x08
+#define HINT_MODEM 0x10
+#define HINT_FAX 0x20
+#define HINT_LAN 0x40
+#define HINT_EXTENSION 0x80
+
+/* Hint bit positions for second hint byte (first extension byte) */
+#define HINT_TELEPHONY 0x01
+#define HINT_FILE_SERVER 0x02
+#define HINT_COMM 0x04
+#define HINT_MESSAGE 0x08
+#define HINT_HTTP 0x10
+#define HINT_OBEX 0x20
+
+typedef enum {
+ S_PNP,
+ S_PDA,
+ S_COMPUTER,
+ S_PRINTER,
+ S_MODEM,
+ S_FAX,
+ S_LAN,
+ S_TELEPHONY,
+ S_COMM,
+ S_OBEX,
+} SERVICE;
+
+#define S_END 0xff
+
+#define CLIENT 1
+#define SERVER 2
+
+typedef void (*DISCOVERY_CALLBACK) ( DISCOVERY*);
+
+struct irlmp_registration {
+ QUEUE queue; /* Must be first */
+
+ int service; /* LAN, OBEX, COMM etc. */
+ int type; /* Client or server or both */
+
+ DISCOVERY_CALLBACK discovery_callback;
+};
+
+struct lap_cb; /* Forward decl. */
+
+/*
+ * Information about each logical LSAP connection
+ */
+struct lsap_cb {
+ QUEUE queue; /* Must be first */
+
+ int magic;
+
+ int connected;
+ int persistent;
+
+ struct irda_statistics stats;
+
+ __u8 slsap_sel; /* Source (this) LSAP address */
+ __u8 dlsap_sel; /* Destination LSAP address (if connected) */
+
+ struct sk_buff *tmp_skb; /* Store skb here while connecting */
+
+ struct timer_list watchdog_timer;
+
+ IRLMP_STATE lsap_state; /* Connection state */
+ struct notify_t notify; /* Indication/Confirm entry points */
+ struct qos_info qos; /* QoS for this connection */
+
+ struct lap_cb *lap; /* Pointer to LAP connection structure */
+};
+
+/*
+ * Information about each registred IrLAP layer
+ */
+struct lap_cb {
+ QUEUE queue; /* Must be first */
+
+ int magic;
+ int reason; /* LAP disconnect reason */
+
+ IRLMP_STATE lap_state;
+
+ struct irlap_cb *irlap; /* Instance of IrLAP layer */
+
+ hashbin_t *lsaps; /* LSAP associated with this link */
+
+ __u8 caddr; /* Connection address */
+
+ __u32 saddr; /* Source device address */
+ __u32 daddr; /* Destination device address */
+
+ hashbin_t *cachelog; /* Discovered devices for this link */
+
+ struct qos_info *qos; /* LAP QoS for this session */
+};
+
+/*
+ * Used for caching the last slsap->dlsap->handle mapping
+ */
+typedef struct {
+ int valid;
+
+ __u8 slsap_sel;
+ __u8 dlsap_sel;
+ struct lsap_cb *lsap;
+} CACHE_ENTRY;
+
+/*
+ * Main structure for IrLMP
+ */
+struct irlmp_cb {
+ int magic;
+
+ __u8 conflict_flag;
+
+ /* int discovery; */
+
+ DISCOVERY discovery_rsp; /* Discovery response to use by IrLAP */
+ DISCOVERY discovery_cmd; /* Discovery command to use by IrLAP */
+
+ int free_lsap_sel;
+
+#ifdef CONFIG_IRDA_CACHE_LAST_LSAP
+ CACHE_ENTRY cache; /* Caching last slsap->dlsap->handle mapping */
+#endif
+ struct timer_list discovery_timer;
+
+ hashbin_t *links; /* IrLAP connection table */
+ hashbin_t *unconnected_lsaps;
+ hashbin_t *registry;
+
+ __u8 hint[2]; /* Hint bits */
+};
+
+/* Prototype declarations */
+int irlmp_init(void);
+void irlmp_cleanup(void);
+
+struct lsap_cb *irlmp_open_lsap( __u8 slsap, struct notify_t *notify);
+void irlmp_close_lsap( struct lsap_cb *self);
+
+void irlmp_register_layer( int service, int type, int do_discovery,
+ DISCOVERY_CALLBACK);
+void irlmp_unregister_layer( int service, int type);
+
+void irlmp_register_irlap( struct irlap_cb *self, __u32 saddr,
+ struct notify_t *);
+void irlmp_unregister_irlap( __u32 saddr);
+
+void irlmp_connect_request( struct lsap_cb *, __u8 dlsap_sel, __u32 daddr,
+ struct qos_info *, struct sk_buff *);
+void irlmp_connect_indication( struct lsap_cb *self, struct sk_buff *skb);
+void irlmp_connect_response( struct lsap_cb *, struct sk_buff *);
+void irlmp_connect_confirm( struct lsap_cb *, struct sk_buff *);
+
+
+void irlmp_disconnect_indication( struct lsap_cb *self, LM_REASON reason,
+ struct sk_buff *userdata);
+void irlmp_disconnect_request( struct lsap_cb *, struct sk_buff *userdata);
+
+void irlmp_discovery_confirm( struct lap_cb *, hashbin_t *discovery_log);
+void irlmp_discovery_indication( struct lap_cb *, DISCOVERY *discovery);
+void irlmp_discovery_request( int nslots);
+DISCOVERY *irlmp_get_discovery_response(void);
+
+void irlmp_data_request( struct lsap_cb *, struct sk_buff *);
+void irlmp_udata_request( struct lsap_cb *, struct sk_buff *);
+void irlmp_data_indication( struct lsap_cb *, struct sk_buff *);
+void irlmp_udata_indication( struct lsap_cb *, struct sk_buff *);
+
+void irlmp_status_request(void);
+void irlmp_status_indication( LINK_STATUS link, LOCK_STATUS lock);
+
+int irlmp_slsap_inuse( __u8 slsap);
+__u8 irlmp_find_free_slsap(void);
+
+LM_REASON irlmp_convert_lap_reason( LAP_REASON);
+
+extern struct irlmp_cb *irlmp;
+
+#endif
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