| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 Bandwith 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 |