drivers/net/skfp/h/sba.h

   1 /******************************************************************************
   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 Bandwidth 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 */
  28 struct 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  */
  38 struct 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  */
  59 struct 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
  74 struct 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          */
 124 struct 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