blob: 35ddb44a112086db7ded95d8f81c0b8f65050c4d (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/******************************************************************************
*
* (C)Copyright 1998,1999 SysKonnect,
* a business unit of Schneider & Koch & Co. Datensysteme GmbH.
*
* 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.
*
* The information in this file is provided "AS IS" without warranty.
*
******************************************************************************/
/*
* Synchronous Bandwidth Allocation (SBA) structs
*/
#ifndef _SBA_
#define _SBA_
#include "mbuf.h"
#include "sba_def.h"
#ifdef SBA
/* Timer Cell Template */
struct timer_cell {
struct timer_cell *next_ptr ;
struct timer_cell *prev_ptr ;
u_long start_time ;
struct s_sba_node_vars *node_var ;
} ;
/*
* Node variables
*/
struct s_sba_node_vars {
u_char change_resp_flag ;
u_char report_resp_flag ;
u_char change_req_flag ;
u_char report_req_flag ;
long change_amount ;
long node_overhead ;
long node_payload ;
u_long node_status ;
u_char deallocate_status ;
u_char timer_state ;
u_short report_cnt ;
long lastrep_req_tranid ;
struct fddi_addr mac_address ;
struct s_sba_sessions *node_sessions ;
struct timer_cell timer ;
} ;
/*
* Session variables
*/
struct s_sba_sessions {
u_long deallocate_status ;
long session_overhead ;
u_long min_segment_size ;
long session_payload ;
u_long session_status ;
u_long sba_category ;
long lastchg_req_tranid ;
u_short session_id ;
u_char class ;
u_char fddi2 ;
u_long max_t_neg ;
struct s_sba_sessions *next_session ;
} ;
struct s_sba {
struct s_sba_node_vars node[MAX_NODES] ;
struct s_sba_sessions session[MAX_SESSIONS] ;
struct s_sba_sessions *free_session ; /* points to the first */
/* free session */
struct timer_cell *tail_timer ; /* points to the last timer cell */
/*
* variables for allocation actions
*/
long total_payload ; /* Total Payload */
long total_overhead ; /* Total Overhead */
long sba_allocatable ; /* allocatable sync bandwidth */
/*
* RAF message receive parameters
*/
long msg_path_index ; /* Path Type */
long msg_sba_pl_req ; /* Payload Request */
long msg_sba_ov_req ; /* Overhead Request */
long msg_mib_pl ; /* Current Payload for this Path */
long msg_mib_ov ; /* Current Overhead for this Path*/
long msg_category ; /* Category of the Allocation */
u_long msg_max_t_neg ; /* longest T_Neg acceptable */
u_long msg_min_seg_siz ; /* minimum segement size */
struct smt_header *sm ; /* points to the rec message */
struct fddi_addr *msg_alloc_addr ; /* Allocation Address */
/*
* SBA variables
*/
u_long sba_t_neg ; /* holds the last T_NEG */
long sba_max_alloc ; /* the parsed value of SBAAvailable */
/*
* SBA state machine variables
*/
short sba_next_state ; /* the next state of the SBA */
char sba_command ; /* holds the execuded SBA cmd */
u_char sba_available ; /* parsed value after possible check */
} ;
#endif /* SBA */
/*
* variables for the End Station Support
*/
struct s_ess {
/*
* flags and counters
*/
u_char sync_bw_available ; /* is set if sync bw is allocated */
u_char local_sba_active ; /* set when a local sba is available */
char raf_act_timer_poll ; /* activate the timer to send allc req */
char timer_count ; /* counts every timer function call */
SMbuf *sba_reply_pend ; /* local reply for the sba is pending */
/*
* variables for the ess bandwidth control
*/
long sync_bw ; /* holds the allocaed sync bw */
u_long alloc_trans_id ; /* trans id of the last alloc req */
} ;
#endif
|
