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/******************************************************************************
*
* (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
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