1/******************************************************************************
  2 *
  3 *	(C)Copyright 1998,1999 SysKonnect,
  4 *	a business unit of Schneider & Koch & Co. Datensysteme GmbH.
  5 *
  6 *	This program is free software; you can redistribute it and/or modify
  7 *	it under the terms of the GNU General Public License as published by
  8 *	the Free Software Foundation; either version 2 of the License, or
  9 *	(at your option) any later version.
 10 *
 11 *	The information in this file is provided "AS IS" without warranty.
 12 *
 13 ******************************************************************************/
 14
 15/*
 16 * Synchronous Bandwidth Allocation (SBA) structs
 17 */
 18 
 19#ifndef _SBA_
 20#define _SBA_
 21
 22#include "h/mbuf.h"
 23#include "h/sba_def.h"
 24
 25#ifdef	SBA
 26
 27/* Timer Cell Template */
 28struct timer_cell {
 29	struct timer_cell	*next_ptr ;
 30	struct timer_cell	*prev_ptr ;
 31	u_long			start_time ;
 32	struct s_sba_node_vars	*node_var ;
 33} ;
 34
 35/*
 36 * Node variables
 37 */
 38struct s_sba_node_vars {
 39	u_char			change_resp_flag ;
 40	u_char			report_resp_flag ;
 41	u_char			change_req_flag ;
 42	u_char			report_req_flag ;
 43	long			change_amount ;
 44	long			node_overhead ;
 45	long			node_payload ;
 46	u_long			node_status ;
 47	u_char			deallocate_status ;
 48	u_char			timer_state ;
 49	u_short			report_cnt ;
 50	long			lastrep_req_tranid ;
 51	struct fddi_addr	mac_address ;
 52	struct s_sba_sessions 	*node_sessions ;
 53	struct timer_cell	timer ;
 54} ;
 55
 56/*
 57 * Session variables
 58 */
 59struct s_sba_sessions {
 60	u_long			deallocate_status ;
 61	long			session_overhead ;
 62	u_long			min_segment_size ;
 63	long			session_payload ;
 64	u_long			session_status ;
 65	u_long			sba_category ;
 66	long			lastchg_req_tranid ;
 67	u_short			session_id ;
 68	u_char			class ;
 69	u_char			fddi2 ;
 70	u_long			max_t_neg ;
 71	struct s_sba_sessions	*next_session ;
 72} ;
 73
 74struct s_sba {
 75
 76	struct s_sba_node_vars	node[MAX_NODES] ;
 77	struct s_sba_sessions	session[MAX_SESSIONS] ;
 78
 79	struct s_sba_sessions	*free_session ;	/* points to the first */
 80						/* free session */
 81
 82	struct timer_cell	*tail_timer ;	/* points to the last timer cell */
 83
 84	/*
 85	 * variables for allocation actions
 86	 */
 87	long	total_payload ;		/* Total Payload */
 88	long	total_overhead ;	/* Total Overhead */
 89	long	sba_allocatable ;	/* allocatable sync bandwidth */
 90
 91	/*
 92	 * RAF message receive parameters
 93	 */
 94	long		msg_path_index ;	/* Path Type */
 95	long		msg_sba_pl_req ;	/* Payload Request */
 96	long		msg_sba_ov_req ;	/* Overhead Request */
 97	long		msg_mib_pl ;		/* Current Payload for this Path */
 98	long		msg_mib_ov ;		/* Current Overhead for this Path*/
 99	long		msg_category ;		/* Category of the Allocation */
100	u_long		msg_max_t_neg ;		/* longest T_Neg acceptable */
101	u_long		msg_min_seg_siz ;	/* minimum segement size */
102	struct smt_header	*sm ;		/* points to the rec message */
103	struct fddi_addr	*msg_alloc_addr ;	/* Allocation Address */
104
105	/*
106	 * SBA variables
107	 */
108	u_long	sba_t_neg ;		/* holds the last T_NEG */
109	long	sba_max_alloc ;		/* the parsed value of SBAAvailable */	
110
111	/*
112	 * SBA state machine variables
113	 */
114	short	sba_next_state ;	/* the next state of the SBA */
115	char	sba_command ;		/* holds the execuded SBA cmd */
116	u_char	sba_available ;		/* parsed value after possible check */
117} ;
118
119#endif	/* SBA */
120
121	/*
122	 * variables for the End Station Support
123	 */
124struct s_ess {
125
126	/*
127	 * flags and counters
128	 */
129	u_char	sync_bw_available ;	/* is set if sync bw is allocated */
130	u_char	local_sba_active ;	/* set when a local sba is available */
131	char	raf_act_timer_poll ;	/* activate the timer to send allc req */
132	char	timer_count ;		/* counts every timer function call */
133
134	SMbuf	*sba_reply_pend ;	/* local reply for the sba is pending */
135	
136	/*
137	 * variables for the ess bandwidth control
138	 */
139	long	sync_bw ;		/* holds the allocaed sync bw */
140	u_long	alloc_trans_id ;	/* trans id of the last alloc req */
141} ;
142#endif