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Diffstat (limited to 'include/net/irda/irttp.h')
| -rw-r--r-- | include/net/irda/irttp.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/include/net/irda/irttp.h b/include/net/irda/irttp.h new file mode 100644 index 000000000..02a486dd5 --- /dev/null +++ b/include/net/irda/irttp.h @@ -0,0 +1,136 @@ +/********************************************************************* + * + * Filename: irttp.h + * Version: 0.3 + * 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: Sat Dec 5 13:48:12 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 IRTTP_H +#define IRTTP_H + +#include <linux/types.h> +#include <linux/skbuff.h> + +#include <net/irda/irmod.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 + +/* + * 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; + + struct notify_t notify; /* Callbacks to client layer */ + + struct irda_statistics stats; + struct timer_list todo_timer; + + int rx_sdu_busy; /* RxSdu.busy */ + int rx_sdu_size; /* The current size of a partially received frame */ + int 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 no_defrag; /* Don't reassemble received fragments */ + + 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, int credit, + struct notify_t *notify); +void 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); + +void irttp_connect_request( struct tsap_cb *self, __u8 dtsap_sel, __u32 daddr, + struct qos_info *qos, int max_sdu_size, + struct sk_buff *userdata); +void irttp_connect_confirm( void *instance, void *sap, struct qos_info *qos, + int max_sdu_size, struct sk_buff *skb); +void irttp_connect_response( struct tsap_cb *self, int max_sdu_size, + struct sk_buff *userdata); + +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__ void irttp_no_reassemble( struct tsap_cb *self) +{ + self->no_defrag = TRUE; +} + +extern struct irttp_cb *irttp; + +#endif /* IRTTP_H */ |