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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/skfp/ess.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/skfp/ess.c')
-rw-r--r--drivers/net/skfp/ess.c720
1 files changed, 720 insertions, 0 deletions
diff --git a/drivers/net/skfp/ess.c b/drivers/net/skfp/ess.c
new file mode 100644
index 00000000000..fd39b4b2ef7
--- /dev/null
+++ b/drivers/net/skfp/ess.c
@@ -0,0 +1,720 @@
+/******************************************************************************
+ *
+ * (C)Copyright 1998,1999 SysKonnect,
+ * a business unit of Schneider & Koch & Co. Datensysteme GmbH.
+ *
+ * See the file "skfddi.c" for further information.
+ *
+ * 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.
+ *
+ ******************************************************************************/
+
+/*
+ * *******************************************************************
+ * This SBA code implements the Synchronous Bandwidth Allocation
+ * functions described in the "FDDI Synchronous Forum Implementer's
+ * Agreement" dated December 1th, 1993.
+ * *******************************************************************
+ *
+ * PURPOSE: The purpose of this function is to control
+ * synchronous allocations on a single FDDI segment.
+ * Allocations are limited to the primary FDDI ring.
+ * The SBM provides recovery mechanisms to recover
+ * unused bandwidth also resolves T_Neg and
+ * reconfiguration changes. Many of the SBM state
+ * machine inputs are sourced by the underlying
+ * FDDI sub-system supporting the SBA application.
+ *
+ * *******************************************************************
+ */
+
+#include "h/types.h"
+#include "h/fddi.h"
+#include "h/smc.h"
+#include "h/smt_p.h"
+
+
+#ifndef SLIM_SMT
+
+#ifdef ESS
+
+#ifndef lint
+static const char ID_sccs[] = "@(#)ess.c 1.10 96/02/23 (C) SK" ;
+#define LINT_USE(x)
+#else
+#define LINT_USE(x) (x)=(x)
+#endif
+#define MS2BCLK(x) ((x)*12500L)
+
+/*
+ -------------------------------------------------------------
+ LOCAL VARIABLES:
+ -------------------------------------------------------------
+*/
+
+static const u_short plist_raf_alc_res[] = { SMT_P0012, SMT_P320B, SMT_P320F,
+ SMT_P3210, SMT_P0019, SMT_P001A,
+ SMT_P001D, 0 } ;
+
+static const u_short plist_raf_chg_req[] = { SMT_P320B, SMT_P320F, SMT_P3210,
+ SMT_P001A, 0 } ;
+
+static const struct fddi_addr smt_sba_da = {{0x80,0x01,0x43,0x00,0x80,0x0C}} ;
+static const struct fddi_addr null_addr = {{0,0,0,0,0,0}} ;
+
+/*
+ -------------------------------------------------------------
+ GLOBAL VARIABLES:
+ -------------------------------------------------------------
+*/
+
+
+/*
+ -------------------------------------------------------------
+ LOCAL FUNCTIONS:
+ -------------------------------------------------------------
+*/
+
+static void ess_send_response(struct s_smc *smc, struct smt_header *sm,
+ int sba_cmd);
+static void ess_config_fifo(struct s_smc *smc);
+static void ess_send_alc_req(struct s_smc *smc);
+static void ess_send_frame(struct s_smc *smc, SMbuf *mb);
+
+/*
+ -------------------------------------------------------------
+ EXTERNAL FUNCTIONS:
+ -------------------------------------------------------------
+*/
+
+/*
+ -------------------------------------------------------------
+ PUBLIC FUNCTIONS:
+ -------------------------------------------------------------
+*/
+
+void ess_timer_poll(struct s_smc *smc);
+void ess_para_change(struct s_smc *smc);
+int ess_raf_received_pack(struct s_smc *smc, SMbuf *mb, struct smt_header *sm,
+ int fs);
+int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead);
+
+
+/*
+ * --------------------------------------------------------------------------
+ * End Station Support (ESS)
+ * --------------------------------------------------------------------------
+ */
+
+/*
+ * evaluate the RAF frame
+ */
+int ess_raf_received_pack(struct s_smc *smc, SMbuf *mb, struct smt_header *sm,
+ int fs)
+{
+ void *p ; /* universal pointer */
+ struct smt_p_0016 *cmd ; /* para: command for the ESS */
+ SMbuf *db ;
+ u_long msg_res_type ; /* recource type */
+ u_long payload, overhead ;
+ int local ;
+ int i ;
+
+ /*
+ * Message Processing Code
+ */
+ local = ((fs & L_INDICATOR) != 0) ;
+
+ /*
+ * get the resource type
+ */
+ if (!(p = (void *) sm_to_para(smc,sm,SMT_P0015))) {
+ DB_ESS("ESS: RAF frame error, parameter type not found\n",0,0) ;
+ return(fs) ;
+ }
+ msg_res_type = ((struct smt_p_0015 *)p)->res_type ;
+
+ /*
+ * get the pointer to the ESS command
+ */
+ if (!(cmd = (struct smt_p_0016 *) sm_to_para(smc,sm,SMT_P0016))) {
+ /*
+ * error in frame: para ESS command was not found
+ */
+ DB_ESS("ESS: RAF frame error, parameter command not found\n",0,0);
+ return(fs) ;
+ }
+
+ DB_ESSN(2,"fc %x ft %x\n",sm->smt_class,sm->smt_type) ;
+ DB_ESSN(2,"ver %x tran %lx\n",sm->smt_version,sm->smt_tid) ;
+ DB_ESSN(2,"stn_id %s\n",addr_to_string(&sm->smt_source),0) ;
+
+ DB_ESSN(2,"infolen %x res %x\n",sm->smt_len, msg_res_type) ;
+ DB_ESSN(2,"sbacmd %x\n",cmd->sba_cmd,0) ;
+
+ /*
+ * evaluate the ESS command
+ */
+ switch (cmd->sba_cmd) {
+
+ /*
+ * Process an ESS Allocation Request
+ */
+ case REQUEST_ALLOCATION :
+ /*
+ * check for an RAF Request (Allocation Request)
+ */
+ if (sm->smt_type == SMT_REQUEST) {
+ /*
+ * process the Allocation request only if the frame is
+ * local and no static allocation is used
+ */
+ if (!local || smc->mib.fddiESSPayload)
+ return(fs) ;
+
+ p = (void *) sm_to_para(smc,sm,SMT_P0019) ;
+ for (i = 0; i < 5; i++) {
+ if (((struct smt_p_0019 *)p)->alloc_addr.a[i]) {
+ return(fs) ;
+ }
+ }
+
+ /*
+ * Note: The Application should send a LAN_LOC_FRAME.
+ * The ESS do not send the Frame to the network!
+ */
+ smc->ess.alloc_trans_id = sm->smt_tid ;
+ DB_ESS("ESS: save Alloc Req Trans ID %lx\n",sm->smt_tid,0);
+ p = (void *) sm_to_para(smc,sm,SMT_P320F) ;
+ ((struct smt_p_320f *)p)->mib_payload =
+ smc->mib.a[PATH0].fddiPATHSbaPayload ;
+ p = (void *) sm_to_para(smc,sm,SMT_P3210) ;
+ ((struct smt_p_3210 *)p)->mib_overhead =
+ smc->mib.a[PATH0].fddiPATHSbaOverhead ;
+ sm->smt_dest = smt_sba_da ;
+
+ if (smc->ess.local_sba_active)
+ return(fs | I_INDICATOR) ;
+
+ if (!(db = smt_get_mbuf(smc)))
+ return(fs) ;
+
+ db->sm_len = mb->sm_len ;
+ db->sm_off = mb->sm_off ;
+ memcpy(((char *)(db->sm_data+db->sm_off)),(char *)sm,
+ (int)db->sm_len) ;
+ dump_smt(smc,
+ (struct smt_header *)(db->sm_data+db->sm_off),
+ "RAF") ;
+ smt_send_frame(smc,db,FC_SMT_INFO,0) ;
+ return(fs) ;
+ }
+
+ /*
+ * The RAF frame is an Allocation Response !
+ * check the parameters
+ */
+ if (smt_check_para(smc,sm,plist_raf_alc_res)) {
+ DB_ESS("ESS: RAF with para problem, ignoring\n",0,0) ;
+ return(fs) ;
+ }
+
+ /*
+ * VERIFY THE FRAME IS WELL BUILT:
+ *
+ * 1. path index = primary ring only
+ * 2. resource type = sync bw only
+ * 3. trans action id = alloc_trans_id
+ * 4. reason code = success
+ *
+ * If any are violated, discard the RAF frame
+ */
+ if ((((struct smt_p_320b *)sm_to_para(smc,sm,SMT_P320B))->path_index
+ != PRIMARY_RING) ||
+ (msg_res_type != SYNC_BW) ||
+ (((struct smt_p_reason *)sm_to_para(smc,sm,SMT_P0012))->rdf_reason
+ != SMT_RDF_SUCCESS) ||
+ (sm->smt_tid != smc->ess.alloc_trans_id)) {
+
+ DB_ESS("ESS: Allocation Responce not accepted\n",0,0) ;
+ return(fs) ;
+ }
+
+ /*
+ * Extract message parameters
+ */
+ p = (void *) sm_to_para(smc,sm,SMT_P320F) ;
+ if (!p) {
+ printk(KERN_ERR "ESS: sm_to_para failed");
+ return fs;
+ }
+ payload = ((struct smt_p_320f *)p)->mib_payload ;
+ p = (void *) sm_to_para(smc,sm,SMT_P3210) ;
+ if (!p) {
+ printk(KERN_ERR "ESS: sm_to_para failed");
+ return fs;
+ }
+ overhead = ((struct smt_p_3210 *)p)->mib_overhead ;
+
+ DB_ESSN(2,"payload= %lx overhead= %lx\n",payload,overhead) ;
+
+ /*
+ * process the bandwidth allocation
+ */
+ (void)process_bw_alloc(smc,(long)payload,(long)overhead) ;
+
+ return(fs) ;
+ /* end of Process Allocation Request */
+
+ /*
+ * Process an ESS Change Request
+ */
+ case CHANGE_ALLOCATION :
+ /*
+ * except only replies
+ */
+ if (sm->smt_type != SMT_REQUEST) {
+ DB_ESS("ESS: Do not process Change Responses\n",0,0) ;
+ return(fs) ;
+ }
+
+ /*
+ * check the para for the Change Request
+ */
+ if (smt_check_para(smc,sm,plist_raf_chg_req)) {
+ DB_ESS("ESS: RAF with para problem, ignoring\n",0,0) ;
+ return(fs) ;
+ }
+
+ /*
+ * Verify the path index and resource
+ * type are correct. If any of
+ * these are false, don't process this
+ * change request frame.
+ */
+ if ((((struct smt_p_320b *)sm_to_para(smc,sm,SMT_P320B))->path_index
+ != PRIMARY_RING) || (msg_res_type != SYNC_BW)) {
+ DB_ESS("ESS: RAF frame with para problem, ignoring\n",0,0) ;
+ return(fs) ;
+ }
+
+ /*
+ * Extract message queue parameters
+ */
+ p = (void *) sm_to_para(smc,sm,SMT_P320F) ;
+ payload = ((struct smt_p_320f *)p)->mib_payload ;
+ p = (void *) sm_to_para(smc,sm,SMT_P3210) ;
+ overhead = ((struct smt_p_3210 *)p)->mib_overhead ;
+
+ DB_ESSN(2,"ESS: Change Request from %s\n",
+ addr_to_string(&sm->smt_source),0) ;
+ DB_ESSN(2,"payload= %lx overhead= %lx\n",payload,overhead) ;
+
+ /*
+ * process the bandwidth allocation
+ */
+ if(!process_bw_alloc(smc,(long)payload,(long)overhead))
+ return(fs) ;
+
+ /*
+ * send an RAF Change Reply
+ */
+ ess_send_response(smc,sm,CHANGE_ALLOCATION) ;
+
+ return(fs) ;
+ /* end of Process Change Request */
+
+ /*
+ * Process Report Response
+ */
+ case REPORT_ALLOCATION :
+ /*
+ * except only requests
+ */
+ if (sm->smt_type != SMT_REQUEST) {
+ DB_ESS("ESS: Do not process a Report Reply\n",0,0) ;
+ return(fs) ;
+ }
+
+ DB_ESSN(2,"ESS: Report Request from %s\n",
+ addr_to_string(&(sm->smt_source)),0) ;
+
+ /*
+ * verify that the resource type is sync bw only
+ */
+ if (msg_res_type != SYNC_BW) {
+ DB_ESS("ESS: ignoring RAF with para problem\n",0,0) ;
+ return(fs) ;
+ }
+
+ /*
+ * send an RAF Change Reply
+ */
+ ess_send_response(smc,sm,REPORT_ALLOCATION) ;
+
+ return(fs) ;
+ /* end of Process Report Request */
+
+ default:
+ /*
+ * error in frame
+ */
+ DB_ESS("ESS: ignoring RAF with bad sba_cmd\n",0,0) ;
+ break ;
+ }
+
+ return(fs) ;
+}
+
+/*
+ * determines the synchronous bandwidth, set the TSYNC register and the
+ * mib variables SBAPayload, SBAOverhead and fddiMACT-NEG.
+ */
+int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead)
+{
+ /*
+ * determine the synchronous bandwidth (sync_bw) in bytes per T-NEG,
+ * if the payload is greater than zero.
+ * For the SBAPayload and the SBAOverhead we have the following
+ * unite quations
+ * _ _
+ * | bytes |
+ * SBAPayload = | 8000 ------ |
+ * | s |
+ * - -
+ * _ _
+ * | bytes |
+ * SBAOverhead = | ------ |
+ * | T-NEG |
+ * - -
+ *
+ * T-NEG is discribed by the equation:
+ *
+ * (-) fddiMACT-NEG
+ * T-NEG = -------------------
+ * 12500000 1/s
+ *
+ * The number of bytes we are able to send is the payload
+ * plus the overhead.
+ *
+ * bytes T-NEG SBAPayload 8000 bytes/s
+ * sync_bw = SBAOverhead ------ + -----------------------------
+ * T-NEG T-NEG
+ *
+ *
+ * 1
+ * sync_bw = SBAOverhead + ---- (-)fddiMACT-NEG * SBAPayload
+ * 1562
+ *
+ */
+
+ /*
+ * set the mib attributes fddiPATHSbaOverhead, fddiPATHSbaPayload
+ */
+/* if (smt_set_obj(smc,SMT_P320F,payload,S_SET)) {
+ DB_ESS("ESS: SMT does not accept the payload value\n",0,0) ;
+ return(FALSE) ;
+ }
+ if (smt_set_obj(smc,SMT_P3210,overhead,S_SET)) {
+ DB_ESS("ESS: SMT does not accept the overhead value\n",0,0) ;
+ return(FALSE) ;
+ } */
+
+ /* premliminary */
+ if (payload > MAX_PAYLOAD || overhead > 5000) {
+ DB_ESS("ESS: payload / overhead not accepted\n",0,0) ;
+ return(FALSE) ;
+ }
+
+ /*
+ * start the iterative allocation process if the payload or the overhead
+ * are smaller than the parsed values
+ */
+ if (smc->mib.fddiESSPayload &&
+ ((u_long)payload != smc->mib.fddiESSPayload ||
+ (u_long)overhead != smc->mib.fddiESSOverhead)) {
+ smc->ess.raf_act_timer_poll = TRUE ;
+ smc->ess.timer_count = 0 ;
+ }
+
+ /*
+ * evulate the Payload
+ */
+ if (payload) {
+ DB_ESSN(2,"ESS: turn SMT_ST_SYNC_SERVICE bit on\n",0,0) ;
+ smc->ess.sync_bw_available = TRUE ;
+
+ smc->ess.sync_bw = overhead -
+ (long)smc->mib.m[MAC0].fddiMACT_Neg *
+ payload / 1562 ;
+ }
+ else {
+ DB_ESSN(2,"ESS: turn SMT_ST_SYNC_SERVICE bit off\n",0,0) ;
+ smc->ess.sync_bw_available = FALSE ;
+ smc->ess.sync_bw = 0 ;
+ overhead = 0 ;
+ }
+
+ smc->mib.a[PATH0].fddiPATHSbaPayload = payload ;
+ smc->mib.a[PATH0].fddiPATHSbaOverhead = overhead ;
+
+
+ DB_ESSN(2,"tsync = %lx\n",smc->ess.sync_bw,0) ;
+
+ ess_config_fifo(smc) ;
+ set_formac_tsync(smc,smc->ess.sync_bw) ;
+ return(TRUE) ;
+}
+
+static void ess_send_response(struct s_smc *smc, struct smt_header *sm,
+ int sba_cmd)
+{
+ struct smt_sba_chg *chg ;
+ SMbuf *mb ;
+ void *p ;
+
+ /*
+ * get and initialize the responce frame
+ */
+ if (sba_cmd == CHANGE_ALLOCATION) {
+ if (!(mb=smt_build_frame(smc,SMT_RAF,SMT_REPLY,
+ sizeof(struct smt_sba_chg))))
+ return ;
+ }
+ else {
+ if (!(mb=smt_build_frame(smc,SMT_RAF,SMT_REPLY,
+ sizeof(struct smt_sba_rep_res))))
+ return ;
+ }
+
+ chg = smtod(mb,struct smt_sba_chg *) ;
+ chg->smt.smt_tid = sm->smt_tid ;
+ chg->smt.smt_dest = sm->smt_source ;
+
+ /* set P15 */
+ chg->s_type.para.p_type = SMT_P0015 ;
+ chg->s_type.para.p_len = sizeof(struct smt_p_0015) - PARA_LEN ;
+ chg->s_type.res_type = SYNC_BW ;
+
+ /* set P16 */
+ chg->cmd.para.p_type = SMT_P0016 ;
+ chg->cmd.para.p_len = sizeof(struct smt_p_0016) - PARA_LEN ;
+ chg->cmd.sba_cmd = sba_cmd ;
+
+ /* set P320B */
+ chg->path.para.p_type = SMT_P320B ;
+ chg->path.para.p_len = sizeof(struct smt_p_320b) - PARA_LEN ;
+ chg->path.mib_index = SBAPATHINDEX ;
+ chg->path.path_pad = (u_short)NULL ;
+ chg->path.path_index = PRIMARY_RING ;
+
+ /* set P320F */
+ chg->payload.para.p_type = SMT_P320F ;
+ chg->payload.para.p_len = sizeof(struct smt_p_320f) - PARA_LEN ;
+ chg->payload.mib_index = SBAPATHINDEX ;
+ chg->payload.mib_payload = smc->mib.a[PATH0].fddiPATHSbaPayload ;
+
+ /* set P3210 */
+ chg->overhead.para.p_type = SMT_P3210 ;
+ chg->overhead.para.p_len = sizeof(struct smt_p_3210) - PARA_LEN ;
+ chg->overhead.mib_index = SBAPATHINDEX ;
+ chg->overhead.mib_overhead = smc->mib.a[PATH0].fddiPATHSbaOverhead ;
+
+ if (sba_cmd == CHANGE_ALLOCATION) {
+ /* set P1A */
+ chg->cat.para.p_type = SMT_P001A ;
+ chg->cat.para.p_len = sizeof(struct smt_p_001a) - PARA_LEN ;
+ p = (void *) sm_to_para(smc,sm,SMT_P001A) ;
+ chg->cat.category = ((struct smt_p_001a *)p)->category ;
+ }
+ dump_smt(smc,(struct smt_header *)chg,"RAF") ;
+ ess_send_frame(smc,mb) ;
+}
+
+void ess_timer_poll(struct s_smc *smc)
+{
+ if (!smc->ess.raf_act_timer_poll)
+ return ;
+
+ DB_ESSN(2,"ESS: timer_poll\n",0,0) ;
+
+ smc->ess.timer_count++ ;
+ if (smc->ess.timer_count == 10) {
+ smc->ess.timer_count = 0 ;
+ ess_send_alc_req(smc) ;
+ }
+}
+
+static void ess_send_alc_req(struct s_smc *smc)
+{
+ struct smt_sba_alc_req *req ;
+ SMbuf *mb ;
+
+ /*
+ * send never allocation request where the requested payload and
+ * overhead is zero or deallocate bandwidht when no bandwidth is
+ * parsed
+ */
+ if (!smc->mib.fddiESSPayload) {
+ smc->mib.fddiESSOverhead = 0 ;
+ }
+ else {
+ if (!smc->mib.fddiESSOverhead)
+ smc->mib.fddiESSOverhead = DEFAULT_OV ;
+ }
+
+ if (smc->mib.fddiESSOverhead ==
+ smc->mib.a[PATH0].fddiPATHSbaOverhead &&
+ smc->mib.fddiESSPayload ==
+ smc->mib.a[PATH0].fddiPATHSbaPayload){
+ smc->ess.raf_act_timer_poll = FALSE ;
+ smc->ess.timer_count = 7 ; /* next RAF alc req after 3 s */
+ return ;
+ }
+
+ /*
+ * get and initialize the responce frame
+ */
+ if (!(mb=smt_build_frame(smc,SMT_RAF,SMT_REQUEST,
+ sizeof(struct smt_sba_alc_req))))
+ return ;
+ req = smtod(mb,struct smt_sba_alc_req *) ;
+ req->smt.smt_tid = smc->ess.alloc_trans_id = smt_get_tid(smc) ;
+ req->smt.smt_dest = smt_sba_da ;
+
+ /* set P15 */
+ req->s_type.para.p_type = SMT_P0015 ;
+ req->s_type.para.p_len = sizeof(struct smt_p_0015) - PARA_LEN ;
+ req->s_type.res_type = SYNC_BW ;
+
+ /* set P16 */
+ req->cmd.para.p_type = SMT_P0016 ;
+ req->cmd.para.p_len = sizeof(struct smt_p_0016) - PARA_LEN ;
+ req->cmd.sba_cmd = REQUEST_ALLOCATION ;
+
+ /*
+ * set the parameter type and parameter lenght of all used
+ * parameters
+ */
+
+ /* set P320B */
+ req->path.para.p_type = SMT_P320B ;
+ req->path.para.p_len = sizeof(struct smt_p_320b) - PARA_LEN ;
+ req->path.mib_index = SBAPATHINDEX ;
+ req->path.path_pad = (u_short)NULL ;
+ req->path.path_index = PRIMARY_RING ;
+
+ /* set P0017 */
+ req->pl_req.para.p_type = SMT_P0017 ;
+ req->pl_req.para.p_len = sizeof(struct smt_p_0017) - PARA_LEN ;
+ req->pl_req.sba_pl_req = smc->mib.fddiESSPayload -
+ smc->mib.a[PATH0].fddiPATHSbaPayload ;
+
+ /* set P0018 */
+ req->ov_req.para.p_type = SMT_P0018 ;
+ req->ov_req.para.p_len = sizeof(struct smt_p_0018) - PARA_LEN ;
+ req->ov_req.sba_ov_req = smc->mib.fddiESSOverhead -
+ smc->mib.a[PATH0].fddiPATHSbaOverhead ;
+
+ /* set P320F */
+ req->payload.para.p_type = SMT_P320F ;
+ req->payload.para.p_len = sizeof(struct smt_p_320f) - PARA_LEN ;
+ req->payload.mib_index = SBAPATHINDEX ;
+ req->payload.mib_payload = smc->mib.a[PATH0].fddiPATHSbaPayload ;
+
+ /* set P3210 */
+ req->overhead.para.p_type = SMT_P3210 ;
+ req->overhead.para.p_len = sizeof(struct smt_p_3210) - PARA_LEN ;
+ req->overhead.mib_index = SBAPATHINDEX ;
+ req->overhead.mib_overhead = smc->mib.a[PATH0].fddiPATHSbaOverhead ;
+
+ /* set P19 */
+ req->a_addr.para.p_type = SMT_P0019 ;
+ req->a_addr.para.p_len = sizeof(struct smt_p_0019) - PARA_LEN ;
+ req->a_addr.sba_pad = (u_short)NULL ;
+ req->a_addr.alloc_addr = null_addr ;
+
+ /* set P1A */
+ req->cat.para.p_type = SMT_P001A ;
+ req->cat.para.p_len = sizeof(struct smt_p_001a) - PARA_LEN ;
+ req->cat.category = smc->mib.fddiESSCategory ;
+
+ /* set P1B */
+ req->tneg.para.p_type = SMT_P001B ;
+ req->tneg.para.p_len = sizeof(struct smt_p_001b) - PARA_LEN ;
+ req->tneg.max_t_neg = smc->mib.fddiESSMaxTNeg ;
+
+ /* set P1C */
+ req->segm.para.p_type = SMT_P001C ;
+ req->segm.para.p_len = sizeof(struct smt_p_001c) - PARA_LEN ;
+ req->segm.min_seg_siz = smc->mib.fddiESSMinSegmentSize ;
+
+ dump_smt(smc,(struct smt_header *)req,"RAF") ;
+ ess_send_frame(smc,mb) ;
+}
+
+static void ess_send_frame(struct s_smc *smc, SMbuf *mb)
+{
+ /*
+ * check if the frame must be send to the own ESS
+ */
+ if (smc->ess.local_sba_active) {
+ /*
+ * Send the Change Reply to the local SBA
+ */
+ DB_ESS("ESS:Send to the local SBA\n",0,0) ;
+ if (!smc->ess.sba_reply_pend)
+ smc->ess.sba_reply_pend = mb ;
+ else {
+ DB_ESS("Frame is lost - another frame was pending\n",0,0);
+ smt_free_mbuf(smc,mb) ;
+ }
+ }
+ else {
+ /*
+ * Send the SBA RAF Change Reply to the network
+ */
+ DB_ESS("ESS:Send to the network\n",0,0) ;
+ smt_send_frame(smc,mb,FC_SMT_INFO,0) ;
+ }
+}
+
+void ess_para_change(struct s_smc *smc)
+{
+ (void)process_bw_alloc(smc,(long)smc->mib.a[PATH0].fddiPATHSbaPayload,
+ (long)smc->mib.a[PATH0].fddiPATHSbaOverhead) ;
+}
+
+static void ess_config_fifo(struct s_smc *smc)
+{
+ /*
+ * if nothing to do exit
+ */
+ if (smc->mib.a[PATH0].fddiPATHSbaPayload) {
+ if (smc->hw.fp.fifo.fifo_config_mode & SYNC_TRAFFIC_ON &&
+ (smc->hw.fp.fifo.fifo_config_mode&SEND_ASYNC_AS_SYNC) ==
+ smc->mib.fddiESSSynchTxMode) {
+ return ;
+ }
+ }
+ else {
+ if (!(smc->hw.fp.fifo.fifo_config_mode & SYNC_TRAFFIC_ON)) {
+ return ;
+ }
+ }
+
+ /*
+ * split up the FIFO and reinitialize the queues
+ */
+ formac_reinit_tx(smc) ;
+}
+
+#endif /* ESS */
+
+#endif /* no SLIM_SMT */
+