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marcus.erl |
/******************************************************************************
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*
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* (C)Copyright 1998,1999 SysKonnect,
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* a business unit of Schneider & Koch & Co. Datensysteme GmbH.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* The information in this file is provided "AS IS" without warranty.
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*
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******************************************************************************/
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/*
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* Synchronous Bandwidth Allocation (SBA) structs
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*/
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#ifndef _SBA_
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#define _SBA_
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#include "h/mbuf.h"
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#include "h/sba_def.h"
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#ifdef SBA
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/* Timer Cell Template */
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struct timer_cell {
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struct timer_cell *next_ptr ;
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struct timer_cell *prev_ptr ;
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u_long start_time ;
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struct s_sba_node_vars *node_var ;
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} ;
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/*
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* Node variables
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*/
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struct s_sba_node_vars {
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u_char change_resp_flag ;
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u_char report_resp_flag ;
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u_char change_req_flag ;
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u_char report_req_flag ;
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long change_amount ;
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long node_overhead ;
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long node_payload ;
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u_long node_status ;
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u_char deallocate_status ;
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u_char timer_state ;
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u_short report_cnt ;
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long lastrep_req_tranid ;
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struct fddi_addr mac_address ;
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struct s_sba_sessions *node_sessions ;
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struct timer_cell timer ;
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} ;
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/*
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* Session variables
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*/
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struct s_sba_sessions {
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u_long deallocate_status ;
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long session_overhead ;
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u_long min_segment_size ;
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long session_payload ;
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u_long session_status ;
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u_long sba_category ;
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long lastchg_req_tranid ;
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u_short session_id ;
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u_char class ;
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u_char fddi2 ;
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u_long max_t_neg ;
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struct s_sba_sessions *next_session ;
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} ;
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struct s_sba {
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struct s_sba_node_vars node[MAX_NODES] ;
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struct s_sba_sessions session[MAX_SESSIONS] ;
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struct s_sba_sessions *free_session ; /* points to the first */
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/* free session */
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struct timer_cell *tail_timer ; /* points to the last timer cell */
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/*
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* variables for allocation actions
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*/
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long total_payload ; /* Total Payload */
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long total_overhead ; /* Total Overhead */
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long sba_allocatable ; /* allocatable sync bandwidth */
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/*
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* RAF message receive parameters
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*/
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long msg_path_index ; /* Path Type */
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long msg_sba_pl_req ; /* Payload Request */
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long msg_sba_ov_req ; /* Overhead Request */
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long msg_mib_pl ; /* Current Payload for this Path */
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long msg_mib_ov ; /* Current Overhead for this Path*/
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long msg_category ; /* Category of the Allocation */
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u_long msg_max_t_neg ; /* longest T_Neg acceptable */
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u_long msg_min_seg_siz ; /* minimum segement size */
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struct smt_header *sm ; /* points to the rec message */
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struct fddi_addr *msg_alloc_addr ; /* Allocation Address */
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/*
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* SBA variables
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*/
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u_long sba_t_neg ; /* holds the last T_NEG */
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long sba_max_alloc ; /* the parsed value of SBAAvailable */
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/*
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* SBA state machine variables
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*/
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short sba_next_state ; /* the next state of the SBA */
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char sba_command ; /* holds the execuded SBA cmd */
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u_char sba_available ; /* parsed value after possible check */
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} ;
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#endif /* SBA */
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/*
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* variables for the End Station Support
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*/
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struct s_ess {
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/*
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* flags and counters
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*/
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u_char sync_bw_available ; /* is set if sync bw is allocated */
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u_char local_sba_active ; /* set when a local sba is available */
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char raf_act_timer_poll ; /* activate the timer to send allc req */
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char timer_count ; /* counts every timer function call */
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SMbuf *sba_reply_pend ; /* local reply for the sba is pending */
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/*
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* variables for the ess bandwidth control
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*/
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long sync_bw ; /* holds the allocaed sync bw */
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u_long alloc_trans_id ; /* trans id of the last alloc req */
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} ;
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#endif
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