blob: df716cd5784a8028feac830603b4d3b177b6ed8e [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/******************************************************************************
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 Bandwith 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