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
143