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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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* See the file "skfddi.c" for further information.
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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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* *******************************************************************
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* This SBA code implements the Synchronous Bandwidth Allocation
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* functions described in the "FDDI Synchronous Forum Implementer's
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* Agreement" dated December 1th, 1993.
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* *******************************************************************
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*
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* PURPOSE: The purpose of this function is to control
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* synchronous allocations on a single FDDI segment.
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* Allocations are limited to the primary FDDI ring.
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* The SBM provides recovery mechanisms to recover
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* unused bandwidth also resolves T_Neg and
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* reconfiguration changes. Many of the SBM state
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* machine inputs are sourced by the underlying
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* FDDI sub-system supporting the SBA application.
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*
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* *******************************************************************
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*/
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#include "h/types.h"
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#include "h/fddi.h"
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#include "h/smc.h"
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#include "h/smt_p.h"
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#ifndef SLIM_SMT
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#ifdef ESS
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#ifndef lint
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static const char ID_sccs[] = "@(#)ess.c 1.10 96/02/23 (C) SK" ;
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#define LINT_USE(x)
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#else
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#define LINT_USE(x) (x)=(x)
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#endif
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#define MS2BCLK(x) ((x)*12500L)
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/*
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-------------------------------------------------------------
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LOCAL VARIABLES:
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-------------------------------------------------------------
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*/
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static const u_short plist_raf_alc_res[] = { SMT_P0012, SMT_P320B, SMT_P320F,
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SMT_P3210, SMT_P0019, SMT_P001A,
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SMT_P001D, 0 } ;
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static const u_short plist_raf_chg_req[] = { SMT_P320B, SMT_P320F, SMT_P3210,
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SMT_P001A, 0 } ;
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static const struct fddi_addr smt_sba_da = {{0x80,0x01,0x43,0x00,0x80,0x0C}} ;
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static const struct fddi_addr null_addr = {{0,0,0,0,0,0}} ;
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/*
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-------------------------------------------------------------
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GLOBAL VARIABLES:
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-------------------------------------------------------------
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*/
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/*
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-------------------------------------------------------------
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LOCAL FUNCTIONS:
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-------------------------------------------------------------
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*/
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static void ess_send_response(struct s_smc *smc, struct smt_header *sm,
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int sba_cmd);
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static void ess_config_fifo(struct s_smc *smc);
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static void ess_send_alc_req(struct s_smc *smc);
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static void ess_send_frame(struct s_smc *smc, SMbuf *mb);
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/*
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-------------------------------------------------------------
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EXTERNAL FUNCTIONS:
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-------------------------------------------------------------
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*/
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/*
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-------------------------------------------------------------
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PUBLIC FUNCTIONS:
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-------------------------------------------------------------
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*/
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void ess_timer_poll(struct s_smc *smc);
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void ess_para_change(struct s_smc *smc);
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int ess_raf_received_pack(struct s_smc *smc, SMbuf *mb, struct smt_header *sm,
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int fs);
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static int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead);
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/*
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* --------------------------------------------------------------------------
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* End Station Support (ESS)
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* --------------------------------------------------------------------------
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*/
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/*
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* evaluate the RAF frame
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*/
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int ess_raf_received_pack(struct s_smc *smc, SMbuf *mb, struct smt_header *sm,
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int fs)
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{
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void *p ; /* universal pointer */
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struct smt_p_0016 *cmd ; /* para: command for the ESS */
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SMbuf *db ;
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u_long msg_res_type ; /* recource type */
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u_long payload, overhead ;
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int local ;
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int i ;
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/*
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* Message Processing Code
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*/
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local = ((fs & L_INDICATOR) != 0) ;
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/*
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* get the resource type
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*/
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if (!(p = (void *) sm_to_para(smc,sm,SMT_P0015))) {
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DB_ESS("ESS: RAF frame error, parameter type not found\n",0,0) ;
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return(fs) ;
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}
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msg_res_type = ((struct smt_p_0015 *)p)->res_type ;
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/*
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* get the pointer to the ESS command
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*/
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if (!(cmd = (struct smt_p_0016 *) sm_to_para(smc,sm,SMT_P0016))) {
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/*
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* error in frame: para ESS command was not found
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*/
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DB_ESS("ESS: RAF frame error, parameter command not found\n",0,0);
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return(fs) ;
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}
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DB_ESSN(2,"fc %x ft %x\n",sm->smt_class,sm->smt_type) ;
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DB_ESSN(2,"ver %x tran %lx\n",sm->smt_version,sm->smt_tid) ;
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DB_ESSN(2,"stn_id %s\n",addr_to_string(&sm->smt_source),0) ;
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DB_ESSN(2,"infolen %x res %x\n",sm->smt_len, msg_res_type) ;
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DB_ESSN(2,"sbacmd %x\n",cmd->sba_cmd,0) ;
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/*
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* evaluate the ESS command
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*/
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switch (cmd->sba_cmd) {
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/*
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* Process an ESS Allocation Request
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*/
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case REQUEST_ALLOCATION :
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/*
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* check for an RAF Request (Allocation Request)
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*/
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if (sm->smt_type == SMT_REQUEST) {
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/*
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* process the Allocation request only if the frame is
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* local and no static allocation is used
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*/
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if (!local || smc->mib.fddiESSPayload)
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return(fs) ;
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p = (void *) sm_to_para(smc,sm,SMT_P0019) ;
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for (i = 0; i < 5; i++) {
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if (((struct smt_p_0019 *)p)->alloc_addr.a[i]) {
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return(fs) ;
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}
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}
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/*
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* Note: The Application should send a LAN_LOC_FRAME.
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* The ESS do not send the Frame to the network!
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*/
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smc->ess.alloc_trans_id = sm->smt_tid ;
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DB_ESS("ESS: save Alloc Req Trans ID %lx\n",sm->smt_tid,0);
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p = (void *) sm_to_para(smc,sm,SMT_P320F) ;
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((struct smt_p_320f *)p)->mib_payload =
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smc->mib.a[PATH0].fddiPATHSbaPayload ;
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p = (void *) sm_to_para(smc,sm,SMT_P3210) ;
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((struct smt_p_3210 *)p)->mib_overhead =
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smc->mib.a[PATH0].fddiPATHSbaOverhead ;
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sm->smt_dest = smt_sba_da ;
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if (smc->ess.local_sba_active)
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return(fs | I_INDICATOR) ;
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if (!(db = smt_get_mbuf(smc)))
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return(fs) ;
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db->sm_len = mb->sm_len ;
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db->sm_off = mb->sm_off ;
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memcpy(((char *)(db->sm_data+db->sm_off)),(char *)sm,
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(int)db->sm_len) ;
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dump_smt(smc,
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(struct smt_header *)(db->sm_data+db->sm_off),
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"RAF") ;
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smt_send_frame(smc,db,FC_SMT_INFO,0) ;
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return(fs) ;
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}
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/*
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* The RAF frame is an Allocation Response !
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* check the parameters
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*/
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if (smt_check_para(smc,sm,plist_raf_alc_res)) {
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DB_ESS("ESS: RAF with para problem, ignoring\n",0,0) ;
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return(fs) ;
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}
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/*
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* VERIFY THE FRAME IS WELL BUILT:
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*
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* 1. path index = primary ring only
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* 2. resource type = sync bw only
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* 3. trans action id = alloc_trans_id
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* 4. reason code = success
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*
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* If any are violated, discard the RAF frame
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*/
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if ((((struct smt_p_320b *)sm_to_para(smc,sm,SMT_P320B))->path_index
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!= PRIMARY_RING) ||
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(msg_res_type != SYNC_BW) ||
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(((struct smt_p_reason *)sm_to_para(smc,sm,SMT_P0012))->rdf_reason
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!= SMT_RDF_SUCCESS) ||
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(sm->smt_tid != smc->ess.alloc_trans_id)) {
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DB_ESS("ESS: Allocation Responce not accepted\n",0,0) ;
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return(fs) ;
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}
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/*
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* Extract message parameters
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*/
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p = (void *) sm_to_para(smc,sm,SMT_P320F) ;
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if (!p) {
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printk(KERN_ERR "ESS: sm_to_para failed");
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return fs;
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}
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payload = ((struct smt_p_320f *)p)->mib_payload ;
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p = (void *) sm_to_para(smc,sm,SMT_P3210) ;
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if (!p) {
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printk(KERN_ERR "ESS: sm_to_para failed");
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return fs;
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}
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overhead = ((struct smt_p_3210 *)p)->mib_overhead ;
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DB_ESSN(2,"payload= %lx overhead= %lx\n",payload,overhead) ;
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/*
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* process the bandwidth allocation
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*/
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(void)process_bw_alloc(smc,(long)payload,(long)overhead) ;
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return(fs) ;
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/* end of Process Allocation Request */
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/*
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* Process an ESS Change Request
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*/
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case CHANGE_ALLOCATION :
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/*
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* except only replies
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*/
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if (sm->smt_type != SMT_REQUEST) {
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DB_ESS("ESS: Do not process Change Responses\n",0,0) ;
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return(fs) ;
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}
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/*
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* check the para for the Change Request
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*/
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if (smt_check_para(smc,sm,plist_raf_chg_req)) {
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DB_ESS("ESS: RAF with para problem, ignoring\n",0,0) ;
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return(fs) ;
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}
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/*
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* Verify the path index and resource
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* type are correct. If any of
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* these are false, don't process this
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* change request frame.
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*/
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if ((((struct smt_p_320b *)sm_to_para(smc,sm,SMT_P320B))->path_index
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!= PRIMARY_RING) || (msg_res_type != SYNC_BW)) {
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DB_ESS("ESS: RAF frame with para problem, ignoring\n",0,0) ;
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return(fs) ;
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}
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/*
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* Extract message queue parameters
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*/
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p = (void *) sm_to_para(smc,sm,SMT_P320F) ;
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payload = ((struct smt_p_320f *)p)->mib_payload ;
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p = (void *) sm_to_para(smc,sm,SMT_P3210) ;
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overhead = ((struct smt_p_3210 *)p)->mib_overhead ;
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DB_ESSN(2,"ESS: Change Request from %s\n",
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addr_to_string(&sm->smt_source),0) ;
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DB_ESSN(2,"payload= %lx overhead= %lx\n",payload,overhead) ;
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/*
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* process the bandwidth allocation
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*/
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if(!process_bw_alloc(smc,(long)payload,(long)overhead))
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return(fs) ;
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/*
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* send an RAF Change Reply
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*/
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ess_send_response(smc,sm,CHANGE_ALLOCATION) ;
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return(fs) ;
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/* end of Process Change Request */
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/*
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* Process Report Response
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| 334 |
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*/
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case REPORT_ALLOCATION :
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/*
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* except only requests
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*/
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if (sm->smt_type != SMT_REQUEST) {
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DB_ESS("ESS: Do not process a Report Reply\n",0,0) ;
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return(fs) ;
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| 342 |
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|
}
|
| 343 |
|
|
|
| 344 |
|
|
DB_ESSN(2,"ESS: Report Request from %s\n",
|
| 345 |
|
|
addr_to_string(&(sm->smt_source)),0) ;
|
| 346 |
|
|
|
| 347 |
|
|
/*
|
| 348 |
|
|
* verify that the resource type is sync bw only
|
| 349 |
|
|
*/
|
| 350 |
|
|
if (msg_res_type != SYNC_BW) {
|
| 351 |
|
|
DB_ESS("ESS: ignoring RAF with para problem\n",0,0) ;
|
| 352 |
|
|
return(fs) ;
|
| 353 |
|
|
}
|
| 354 |
|
|
|
| 355 |
|
|
/*
|
| 356 |
|
|
* send an RAF Change Reply
|
| 357 |
|
|
*/
|
| 358 |
|
|
ess_send_response(smc,sm,REPORT_ALLOCATION) ;
|
| 359 |
|
|
|
| 360 |
|
|
return(fs) ;
|
| 361 |
|
|
/* end of Process Report Request */
|
| 362 |
|
|
|
| 363 |
|
|
default:
|
| 364 |
|
|
/*
|
| 365 |
|
|
* error in frame
|
| 366 |
|
|
*/
|
| 367 |
|
|
DB_ESS("ESS: ignoring RAF with bad sba_cmd\n",0,0) ;
|
| 368 |
|
|
break ;
|
| 369 |
|
|
}
|
| 370 |
|
|
|
| 371 |
|
|
return(fs) ;
|
| 372 |
|
|
}
|
| 373 |
|
|
|
| 374 |
|
|
/*
|
| 375 |
|
|
* determines the synchronous bandwidth, set the TSYNC register and the
|
| 376 |
|
|
* mib variables SBAPayload, SBAOverhead and fddiMACT-NEG.
|
| 377 |
|
|
*/
|
| 378 |
|
|
static int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead)
|
| 379 |
|
|
{
|
| 380 |
|
|
/*
|
| 381 |
|
|
* determine the synchronous bandwidth (sync_bw) in bytes per T-NEG,
|
| 382 |
|
|
* if the payload is greater than zero.
|
| 383 |
|
|
* For the SBAPayload and the SBAOverhead we have the following
|
| 384 |
|
|
* unite quations
|
| 385 |
|
|
* _ _
|
| 386 |
|
|
* | bytes |
|
| 387 |
|
|
* SBAPayload = | 8000 ------ |
|
| 388 |
|
|
* | s |
|
| 389 |
|
|
* - -
|
| 390 |
|
|
* _ _
|
| 391 |
|
|
* | bytes |
|
| 392 |
|
|
* SBAOverhead = | ------ |
|
| 393 |
|
|
* | T-NEG |
|
| 394 |
|
|
* - -
|
| 395 |
|
|
*
|
| 396 |
|
|
* T-NEG is discribed by the equation:
|
| 397 |
|
|
*
|
| 398 |
|
|
* (-) fddiMACT-NEG
|
| 399 |
|
|
* T-NEG = -------------------
|
| 400 |
|
|
* 12500000 1/s
|
| 401 |
|
|
*
|
| 402 |
|
|
* The number of bytes we are able to send is the payload
|
| 403 |
|
|
* plus the overhead.
|
| 404 |
|
|
*
|
| 405 |
|
|
* bytes T-NEG SBAPayload 8000 bytes/s
|
| 406 |
|
|
* sync_bw = SBAOverhead ------ + -----------------------------
|
| 407 |
|
|
* T-NEG T-NEG
|
| 408 |
|
|
*
|
| 409 |
|
|
*
|
| 410 |
|
|
* 1
|
| 411 |
|
|
* sync_bw = SBAOverhead + ---- (-)fddiMACT-NEG * SBAPayload
|
| 412 |
|
|
* 1562
|
| 413 |
|
|
*
|
| 414 |
|
|
*/
|
| 415 |
|
|
|
| 416 |
|
|
/*
|
| 417 |
|
|
* set the mib attributes fddiPATHSbaOverhead, fddiPATHSbaPayload
|
| 418 |
|
|
*/
|
| 419 |
|
|
/* if (smt_set_obj(smc,SMT_P320F,payload,S_SET)) {
|
| 420 |
|
|
DB_ESS("ESS: SMT does not accept the payload value\n",0,0) ;
|
| 421 |
|
|
return(FALSE) ;
|
| 422 |
|
|
}
|
| 423 |
|
|
if (smt_set_obj(smc,SMT_P3210,overhead,S_SET)) {
|
| 424 |
|
|
DB_ESS("ESS: SMT does not accept the overhead value\n",0,0) ;
|
| 425 |
|
|
return(FALSE) ;
|
| 426 |
|
|
} */
|
| 427 |
|
|
|
| 428 |
|
|
/* premliminary */
|
| 429 |
|
|
if (payload > MAX_PAYLOAD || overhead > 5000) {
|
| 430 |
|
|
DB_ESS("ESS: payload / overhead not accepted\n",0,0) ;
|
| 431 |
|
|
return(FALSE) ;
|
| 432 |
|
|
}
|
| 433 |
|
|
|
| 434 |
|
|
/*
|
| 435 |
|
|
* start the iterative allocation process if the payload or the overhead
|
| 436 |
|
|
* are smaller than the parsed values
|
| 437 |
|
|
*/
|
| 438 |
|
|
if (smc->mib.fddiESSPayload &&
|
| 439 |
|
|
((u_long)payload != smc->mib.fddiESSPayload ||
|
| 440 |
|
|
(u_long)overhead != smc->mib.fddiESSOverhead)) {
|
| 441 |
|
|
smc->ess.raf_act_timer_poll = TRUE ;
|
| 442 |
|
|
smc->ess.timer_count = 0 ;
|
| 443 |
|
|
}
|
| 444 |
|
|
|
| 445 |
|
|
/*
|
| 446 |
|
|
* evulate the Payload
|
| 447 |
|
|
*/
|
| 448 |
|
|
if (payload) {
|
| 449 |
|
|
DB_ESSN(2,"ESS: turn SMT_ST_SYNC_SERVICE bit on\n",0,0) ;
|
| 450 |
|
|
smc->ess.sync_bw_available = TRUE ;
|
| 451 |
|
|
|
| 452 |
|
|
smc->ess.sync_bw = overhead -
|
| 453 |
|
|
(long)smc->mib.m[MAC0].fddiMACT_Neg *
|
| 454 |
|
|
payload / 1562 ;
|
| 455 |
|
|
}
|
| 456 |
|
|
else {
|
| 457 |
|
|
DB_ESSN(2,"ESS: turn SMT_ST_SYNC_SERVICE bit off\n",0,0) ;
|
| 458 |
|
|
smc->ess.sync_bw_available = FALSE ;
|
| 459 |
|
|
smc->ess.sync_bw = 0 ;
|
| 460 |
|
|
overhead = 0 ;
|
| 461 |
|
|
}
|
| 462 |
|
|
|
| 463 |
|
|
smc->mib.a[PATH0].fddiPATHSbaPayload = payload ;
|
| 464 |
|
|
smc->mib.a[PATH0].fddiPATHSbaOverhead = overhead ;
|
| 465 |
|
|
|
| 466 |
|
|
|
| 467 |
|
|
DB_ESSN(2,"tsync = %lx\n",smc->ess.sync_bw,0) ;
|
| 468 |
|
|
|
| 469 |
|
|
ess_config_fifo(smc) ;
|
| 470 |
|
|
set_formac_tsync(smc,smc->ess.sync_bw) ;
|
| 471 |
|
|
return(TRUE) ;
|
| 472 |
|
|
}
|
| 473 |
|
|
|
| 474 |
|
|
static void ess_send_response(struct s_smc *smc, struct smt_header *sm,
|
| 475 |
|
|
int sba_cmd)
|
| 476 |
|
|
{
|
| 477 |
|
|
struct smt_sba_chg *chg ;
|
| 478 |
|
|
SMbuf *mb ;
|
| 479 |
|
|
void *p ;
|
| 480 |
|
|
|
| 481 |
|
|
/*
|
| 482 |
|
|
* get and initialize the responce frame
|
| 483 |
|
|
*/
|
| 484 |
|
|
if (sba_cmd == CHANGE_ALLOCATION) {
|
| 485 |
|
|
if (!(mb=smt_build_frame(smc,SMT_RAF,SMT_REPLY,
|
| 486 |
|
|
sizeof(struct smt_sba_chg))))
|
| 487 |
|
|
return ;
|
| 488 |
|
|
}
|
| 489 |
|
|
else {
|
| 490 |
|
|
if (!(mb=smt_build_frame(smc,SMT_RAF,SMT_REPLY,
|
| 491 |
|
|
sizeof(struct smt_sba_rep_res))))
|
| 492 |
|
|
return ;
|
| 493 |
|
|
}
|
| 494 |
|
|
|
| 495 |
|
|
chg = smtod(mb,struct smt_sba_chg *) ;
|
| 496 |
|
|
chg->smt.smt_tid = sm->smt_tid ;
|
| 497 |
|
|
chg->smt.smt_dest = sm->smt_source ;
|
| 498 |
|
|
|
| 499 |
|
|
/* set P15 */
|
| 500 |
|
|
chg->s_type.para.p_type = SMT_P0015 ;
|
| 501 |
|
|
chg->s_type.para.p_len = sizeof(struct smt_p_0015) - PARA_LEN ;
|
| 502 |
|
|
chg->s_type.res_type = SYNC_BW ;
|
| 503 |
|
|
|
| 504 |
|
|
/* set P16 */
|
| 505 |
|
|
chg->cmd.para.p_type = SMT_P0016 ;
|
| 506 |
|
|
chg->cmd.para.p_len = sizeof(struct smt_p_0016) - PARA_LEN ;
|
| 507 |
|
|
chg->cmd.sba_cmd = sba_cmd ;
|
| 508 |
|
|
|
| 509 |
|
|
/* set P320B */
|
| 510 |
|
|
chg->path.para.p_type = SMT_P320B ;
|
| 511 |
|
|
chg->path.para.p_len = sizeof(struct smt_p_320b) - PARA_LEN ;
|
| 512 |
|
|
chg->path.mib_index = SBAPATHINDEX ;
|
| 513 |
|
|
chg->path.path_pad = (u_short)NULL ;
|
| 514 |
|
|
chg->path.path_index = PRIMARY_RING ;
|
| 515 |
|
|
|
| 516 |
|
|
/* set P320F */
|
| 517 |
|
|
chg->payload.para.p_type = SMT_P320F ;
|
| 518 |
|
|
chg->payload.para.p_len = sizeof(struct smt_p_320f) - PARA_LEN ;
|
| 519 |
|
|
chg->payload.mib_index = SBAPATHINDEX ;
|
| 520 |
|
|
chg->payload.mib_payload = smc->mib.a[PATH0].fddiPATHSbaPayload ;
|
| 521 |
|
|
|
| 522 |
|
|
/* set P3210 */
|
| 523 |
|
|
chg->overhead.para.p_type = SMT_P3210 ;
|
| 524 |
|
|
chg->overhead.para.p_len = sizeof(struct smt_p_3210) - PARA_LEN ;
|
| 525 |
|
|
chg->overhead.mib_index = SBAPATHINDEX ;
|
| 526 |
|
|
chg->overhead.mib_overhead = smc->mib.a[PATH0].fddiPATHSbaOverhead ;
|
| 527 |
|
|
|
| 528 |
|
|
if (sba_cmd == CHANGE_ALLOCATION) {
|
| 529 |
|
|
/* set P1A */
|
| 530 |
|
|
chg->cat.para.p_type = SMT_P001A ;
|
| 531 |
|
|
chg->cat.para.p_len = sizeof(struct smt_p_001a) - PARA_LEN ;
|
| 532 |
|
|
p = (void *) sm_to_para(smc,sm,SMT_P001A) ;
|
| 533 |
|
|
chg->cat.category = ((struct smt_p_001a *)p)->category ;
|
| 534 |
|
|
}
|
| 535 |
|
|
dump_smt(smc,(struct smt_header *)chg,"RAF") ;
|
| 536 |
|
|
ess_send_frame(smc,mb) ;
|
| 537 |
|
|
}
|
| 538 |
|
|
|
| 539 |
|
|
void ess_timer_poll(struct s_smc *smc)
|
| 540 |
|
|
{
|
| 541 |
|
|
if (!smc->ess.raf_act_timer_poll)
|
| 542 |
|
|
return ;
|
| 543 |
|
|
|
| 544 |
|
|
DB_ESSN(2,"ESS: timer_poll\n",0,0) ;
|
| 545 |
|
|
|
| 546 |
|
|
smc->ess.timer_count++ ;
|
| 547 |
|
|
if (smc->ess.timer_count == 10) {
|
| 548 |
|
|
smc->ess.timer_count = 0 ;
|
| 549 |
|
|
ess_send_alc_req(smc) ;
|
| 550 |
|
|
}
|
| 551 |
|
|
}
|
| 552 |
|
|
|
| 553 |
|
|
static void ess_send_alc_req(struct s_smc *smc)
|
| 554 |
|
|
{
|
| 555 |
|
|
struct smt_sba_alc_req *req ;
|
| 556 |
|
|
SMbuf *mb ;
|
| 557 |
|
|
|
| 558 |
|
|
/*
|
| 559 |
|
|
* send never allocation request where the requested payload and
|
| 560 |
|
|
* overhead is zero or deallocate bandwidht when no bandwidth is
|
| 561 |
|
|
* parsed
|
| 562 |
|
|
*/
|
| 563 |
|
|
if (!smc->mib.fddiESSPayload) {
|
| 564 |
|
|
smc->mib.fddiESSOverhead = 0 ;
|
| 565 |
|
|
}
|
| 566 |
|
|
else {
|
| 567 |
|
|
if (!smc->mib.fddiESSOverhead)
|
| 568 |
|
|
smc->mib.fddiESSOverhead = DEFAULT_OV ;
|
| 569 |
|
|
}
|
| 570 |
|
|
|
| 571 |
|
|
if (smc->mib.fddiESSOverhead ==
|
| 572 |
|
|
smc->mib.a[PATH0].fddiPATHSbaOverhead &&
|
| 573 |
|
|
smc->mib.fddiESSPayload ==
|
| 574 |
|
|
smc->mib.a[PATH0].fddiPATHSbaPayload){
|
| 575 |
|
|
smc->ess.raf_act_timer_poll = FALSE ;
|
| 576 |
|
|
smc->ess.timer_count = 7 ; /* next RAF alc req after 3 s */
|
| 577 |
|
|
return ;
|
| 578 |
|
|
}
|
| 579 |
|
|
|
| 580 |
|
|
/*
|
| 581 |
|
|
* get and initialize the responce frame
|
| 582 |
|
|
*/
|
| 583 |
|
|
if (!(mb=smt_build_frame(smc,SMT_RAF,SMT_REQUEST,
|
| 584 |
|
|
sizeof(struct smt_sba_alc_req))))
|
| 585 |
|
|
return ;
|
| 586 |
|
|
req = smtod(mb,struct smt_sba_alc_req *) ;
|
| 587 |
|
|
req->smt.smt_tid = smc->ess.alloc_trans_id = smt_get_tid(smc) ;
|
| 588 |
|
|
req->smt.smt_dest = smt_sba_da ;
|
| 589 |
|
|
|
| 590 |
|
|
/* set P15 */
|
| 591 |
|
|
req->s_type.para.p_type = SMT_P0015 ;
|
| 592 |
|
|
req->s_type.para.p_len = sizeof(struct smt_p_0015) - PARA_LEN ;
|
| 593 |
|
|
req->s_type.res_type = SYNC_BW ;
|
| 594 |
|
|
|
| 595 |
|
|
/* set P16 */
|
| 596 |
|
|
req->cmd.para.p_type = SMT_P0016 ;
|
| 597 |
|
|
req->cmd.para.p_len = sizeof(struct smt_p_0016) - PARA_LEN ;
|
| 598 |
|
|
req->cmd.sba_cmd = REQUEST_ALLOCATION ;
|
| 599 |
|
|
|
| 600 |
|
|
/*
|
| 601 |
|
|
* set the parameter type and parameter lenght of all used
|
| 602 |
|
|
* parameters
|
| 603 |
|
|
*/
|
| 604 |
|
|
|
| 605 |
|
|
/* set P320B */
|
| 606 |
|
|
req->path.para.p_type = SMT_P320B ;
|
| 607 |
|
|
req->path.para.p_len = sizeof(struct smt_p_320b) - PARA_LEN ;
|
| 608 |
|
|
req->path.mib_index = SBAPATHINDEX ;
|
| 609 |
|
|
req->path.path_pad = (u_short)NULL ;
|
| 610 |
|
|
req->path.path_index = PRIMARY_RING ;
|
| 611 |
|
|
|
| 612 |
|
|
/* set P0017 */
|
| 613 |
|
|
req->pl_req.para.p_type = SMT_P0017 ;
|
| 614 |
|
|
req->pl_req.para.p_len = sizeof(struct smt_p_0017) - PARA_LEN ;
|
| 615 |
|
|
req->pl_req.sba_pl_req = smc->mib.fddiESSPayload -
|
| 616 |
|
|
smc->mib.a[PATH0].fddiPATHSbaPayload ;
|
| 617 |
|
|
|
| 618 |
|
|
/* set P0018 */
|
| 619 |
|
|
req->ov_req.para.p_type = SMT_P0018 ;
|
| 620 |
|
|
req->ov_req.para.p_len = sizeof(struct smt_p_0018) - PARA_LEN ;
|
| 621 |
|
|
req->ov_req.sba_ov_req = smc->mib.fddiESSOverhead -
|
| 622 |
|
|
smc->mib.a[PATH0].fddiPATHSbaOverhead ;
|
| 623 |
|
|
|
| 624 |
|
|
/* set P320F */
|
| 625 |
|
|
req->payload.para.p_type = SMT_P320F ;
|
| 626 |
|
|
req->payload.para.p_len = sizeof(struct smt_p_320f) - PARA_LEN ;
|
| 627 |
|
|
req->payload.mib_index = SBAPATHINDEX ;
|
| 628 |
|
|
req->payload.mib_payload = smc->mib.a[PATH0].fddiPATHSbaPayload ;
|
| 629 |
|
|
|
| 630 |
|
|
/* set P3210 */
|
| 631 |
|
|
req->overhead.para.p_type = SMT_P3210 ;
|
| 632 |
|
|
req->overhead.para.p_len = sizeof(struct smt_p_3210) - PARA_LEN ;
|
| 633 |
|
|
req->overhead.mib_index = SBAPATHINDEX ;
|
| 634 |
|
|
req->overhead.mib_overhead = smc->mib.a[PATH0].fddiPATHSbaOverhead ;
|
| 635 |
|
|
|
| 636 |
|
|
/* set P19 */
|
| 637 |
|
|
req->a_addr.para.p_type = SMT_P0019 ;
|
| 638 |
|
|
req->a_addr.para.p_len = sizeof(struct smt_p_0019) - PARA_LEN ;
|
| 639 |
|
|
req->a_addr.sba_pad = (u_short)NULL ;
|
| 640 |
|
|
req->a_addr.alloc_addr = null_addr ;
|
| 641 |
|
|
|
| 642 |
|
|
/* set P1A */
|
| 643 |
|
|
req->cat.para.p_type = SMT_P001A ;
|
| 644 |
|
|
req->cat.para.p_len = sizeof(struct smt_p_001a) - PARA_LEN ;
|
| 645 |
|
|
req->cat.category = smc->mib.fddiESSCategory ;
|
| 646 |
|
|
|
| 647 |
|
|
/* set P1B */
|
| 648 |
|
|
req->tneg.para.p_type = SMT_P001B ;
|
| 649 |
|
|
req->tneg.para.p_len = sizeof(struct smt_p_001b) - PARA_LEN ;
|
| 650 |
|
|
req->tneg.max_t_neg = smc->mib.fddiESSMaxTNeg ;
|
| 651 |
|
|
|
| 652 |
|
|
/* set P1C */
|
| 653 |
|
|
req->segm.para.p_type = SMT_P001C ;
|
| 654 |
|
|
req->segm.para.p_len = sizeof(struct smt_p_001c) - PARA_LEN ;
|
| 655 |
|
|
req->segm.min_seg_siz = smc->mib.fddiESSMinSegmentSize ;
|
| 656 |
|
|
|
| 657 |
|
|
dump_smt(smc,(struct smt_header *)req,"RAF") ;
|
| 658 |
|
|
ess_send_frame(smc,mb) ;
|
| 659 |
|
|
}
|
| 660 |
|
|
|
| 661 |
|
|
static void ess_send_frame(struct s_smc *smc, SMbuf *mb)
|
| 662 |
|
|
{
|
| 663 |
|
|
/*
|
| 664 |
|
|
* check if the frame must be send to the own ESS
|
| 665 |
|
|
*/
|
| 666 |
|
|
if (smc->ess.local_sba_active) {
|
| 667 |
|
|
/*
|
| 668 |
|
|
* Send the Change Reply to the local SBA
|
| 669 |
|
|
*/
|
| 670 |
|
|
DB_ESS("ESS:Send to the local SBA\n",0,0) ;
|
| 671 |
|
|
if (!smc->ess.sba_reply_pend)
|
| 672 |
|
|
smc->ess.sba_reply_pend = mb ;
|
| 673 |
|
|
else {
|
| 674 |
|
|
DB_ESS("Frame is lost - another frame was pending\n",0,0);
|
| 675 |
|
|
smt_free_mbuf(smc,mb) ;
|
| 676 |
|
|
}
|
| 677 |
|
|
}
|
| 678 |
|
|
else {
|
| 679 |
|
|
/*
|
| 680 |
|
|
* Send the SBA RAF Change Reply to the network
|
| 681 |
|
|
*/
|
| 682 |
|
|
DB_ESS("ESS:Send to the network\n",0,0) ;
|
| 683 |
|
|
smt_send_frame(smc,mb,FC_SMT_INFO,0) ;
|
| 684 |
|
|
}
|
| 685 |
|
|
}
|
| 686 |
|
|
|
| 687 |
|
|
void ess_para_change(struct s_smc *smc)
|
| 688 |
|
|
{
|
| 689 |
|
|
(void)process_bw_alloc(smc,(long)smc->mib.a[PATH0].fddiPATHSbaPayload,
|
| 690 |
|
|
(long)smc->mib.a[PATH0].fddiPATHSbaOverhead) ;
|
| 691 |
|
|
}
|
| 692 |
|
|
|
| 693 |
|
|
static void ess_config_fifo(struct s_smc *smc)
|
| 694 |
|
|
{
|
| 695 |
|
|
/*
|
| 696 |
|
|
* if nothing to do exit
|
| 697 |
|
|
*/
|
| 698 |
|
|
if (smc->mib.a[PATH0].fddiPATHSbaPayload) {
|
| 699 |
|
|
if (smc->hw.fp.fifo.fifo_config_mode & SYNC_TRAFFIC_ON &&
|
| 700 |
|
|
(smc->hw.fp.fifo.fifo_config_mode&SEND_ASYNC_AS_SYNC) ==
|
| 701 |
|
|
smc->mib.fddiESSSynchTxMode) {
|
| 702 |
|
|
return ;
|
| 703 |
|
|
}
|
| 704 |
|
|
}
|
| 705 |
|
|
else {
|
| 706 |
|
|
if (!(smc->hw.fp.fifo.fifo_config_mode & SYNC_TRAFFIC_ON)) {
|
| 707 |
|
|
return ;
|
| 708 |
|
|
}
|
| 709 |
|
|
}
|
| 710 |
|
|
|
| 711 |
|
|
/*
|
| 712 |
|
|
* split up the FIFO and reinitialize the queues
|
| 713 |
|
|
*/
|
| 714 |
|
|
formac_reinit_tx(smc) ;
|
| 715 |
|
|
}
|
| 716 |
|
|
|
| 717 |
|
|
#endif /* ESS */
|
| 718 |
|
|
|
| 719 |
|
|
#endif /* no SLIM_SMT */
|
| 720 |
|
|
|
