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- /*********************************************************************
- *
- * Filename: irttp.h
- * Version: 1.0
- * Description: Tiny Transport Protocol (TTP) definitions
- * Status: Experimental.
- * Author: Dag Brattli <dagb@cs.uit.no>
- * Created at: Sun Aug 31 20:14:31 1997
- * Modified at: Mon Mar 22 13:17:30 1999
- * 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 Troms° admit liability nor
- * provide warranty for any of this software. This material is
- * provided "AS-IS" and at no charge.
- *
- ********************************************************************/
-
- #ifndef IRTTP_H
- #define IRTTP_H
-
- #include <linux/types.h>
- #include <linux/skbuff.h>
- #include <asm/spinlock.h>
-
- #include <net/irda/irda.h>
- #include <net/irda/irlmp.h>
- #include <net/irda/qos.h>
- #include <net/irda/irqueue.h>
-
- #define TTP_MAX_CONNECTIONS LM_MAX_CONNECTIONS
- #define TTP_HEADER 1
- #define TTP_HEADER_WITH_SAR 6
- #define TTP_PARAMETERS 0x80
- #define TTP_MORE 0x80
-
- #define DEFAULT_INITIAL_CREDIT 22
-
- #define LOW_THRESHOLD 4
- #define HIGH_THRESHOLD 8
- #define TTP_MAX_QUEUE 22
-
- /* Some priorities for disconnect requests */
- #define P_NORMAL 0
- #define P_HIGH 1
-
- #define SAR_DISABLE 0
- #define SAR_UNBOUND 0xffffffff
-
- /*
- * This structure contains all data assosiated with one instance of a TTP
- * connection.
- */
- struct tsap_cb {
- QUEUE queue; /* For linking it into the hashbin */
- int magic; /* Just in case */
-
- int max_seg_size; /* Max data that fit into an IrLAP frame */
-
- __u8 stsap_sel; /* Source TSAP */
- __u8 dtsap_sel; /* Destination TSAP */
-
- struct lsap_cb *lsap; /* Corresponding LSAP to this TSAP */
-
- __u8 connected; /* TSAP connected */
-
- __u8 initial_credit; /* Initial credit to give peer */
-
- int avail_credit; /* Available credit to return to peer */
- int remote_credit; /* Credit held by peer TTP entity */
- int send_credit; /* Credit held by local TTP entity */
-
- struct sk_buff_head tx_queue; /* Frames to be transmitted */
- struct sk_buff_head rx_queue; /* Received frames */
- struct sk_buff_head rx_fragments;
- int tx_queue_lock;
- int rx_queue_lock;
- spinlock_t lock;
-
- struct notify_t notify; /* Callbacks to client layer */
-
- struct irda_statistics stats;
- struct timer_list todo_timer;
-
- int rx_sdu_busy; /* RxSdu.busy */
- __u32 rx_sdu_size; /* Current size of a partially received frame */
- __u32 rx_max_sdu_size; /* Max receive user data size */
-
- int tx_sdu_busy; /* TxSdu.busy */
- int tx_max_sdu_size; /* Max transmit user data size */
-
- int close_pend; /* Close, but disconnect_pend */
- int disconnect_pend; /* Disconnect, but still data to send */
- struct sk_buff *disconnect_skb;
- };
-
- struct irttp_cb {
- int magic;
-
- hashbin_t *tsaps;
- };
-
- int irttp_init(void);
- void irttp_cleanup(void);
-
- struct tsap_cb *irttp_open_tsap(__u8 stsap_sel, int credit,
- struct notify_t *notify);
- int irttp_close_tsap(struct tsap_cb *self);
-
- int irttp_data_request(struct tsap_cb *self, struct sk_buff *skb);
- int irttp_udata_request(struct tsap_cb *self, struct sk_buff *skb);
-
- int irttp_connect_request(struct tsap_cb *self, __u8 dtsap_sel,
- __u32 saddr, __u32 daddr,
- struct qos_info *qos, __u32 max_sdu_size,
- struct sk_buff *userdata);
- void irttp_connect_confirm(void *instance, void *sap, struct qos_info *qos,
- __u32 max_sdu_size, struct sk_buff *skb);
- void irttp_connect_response(struct tsap_cb *self, __u32 max_sdu_size,
- struct sk_buff *userdata);
- struct tsap_cb *irttp_dup(struct tsap_cb *self, void *instance);
- void irttp_disconnect_request(struct tsap_cb *self, struct sk_buff *skb,
- int priority);
- void irttp_flow_request(struct tsap_cb *self, LOCAL_FLOW flow);
-
- static __inline __u32 irttp_get_saddr(struct tsap_cb *self)
- {
- return irlmp_get_saddr(self->lsap);
- }
-
- static __inline __u32 irttp_get_daddr(struct tsap_cb *self)
- {
- return irlmp_get_daddr(self->lsap);
- }
-
- extern struct irttp_cb *irttp;
-
- #endif /* IRTTP_H */
-