143 строки
3.7 KiB
C
143 строки
3.7 KiB
C
/******************************************************************************
|
|
*
|
|
* (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
|