static void smt_send_ecf_request(struct s_smc *smc, struct fddi_addr *dest,
int len)
{
smc->sm.pend[SMT_TID_ECF] = smt_get_tid(smc) ;
smt_send_ecf(smc,dest, FC_SMT_INFO, smc->sm.pend[SMT_TID_ECF],
SMT_REQUEST,len) ;
}
static void smt_echo_test(struct s_smc *smc, int dna)
{
u_long tid ;
smc->sm.pend[dna ? SMT_TID_ECF_DNA : SMT_TID_ECF_UNA] =
tid = smt_get_tid(smc) ;
smt_send_ecf(smc, dna ?
&smc->mib.m[MAC0].fddiMACDownstreamNbr :
&smc->mib.m[MAC0].fddiMACUpstreamNbr,
FC_SMT_INFO,tid, SMT_REQUEST, (SMT_TEST_ECHO_LEN & ~3)-8) ;
}
static void ess_send_alc_req(struct s_smc *smc)
{
struct smt_sba_alc_req *req ;
SMbuf *mb ;
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 ;
return ;
}
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 ;
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 ;
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 ;
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 = 0;
req->path.path_index = PRIMARY_RING ;
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 ;
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 ;
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 ;
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 ;
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 = 0;
req->a_addr.alloc_addr = null_addr ;
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 ;
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 ;
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_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 bandwidth 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 response 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 length 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 = 0;
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 = 0;
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 smt_send_nif_request(struct s_smc *smc, struct fddi_addr *dest)
{
smc->sm.pend[SMT_TID_NIF_TEST] = smt_get_tid(smc) ;
smt_send_nif(smc,dest, FC_SMT_INFO, smc->sm.pend[SMT_TID_NIF_TEST],
SMT_REQUEST,0) ;
}
void smt_event(struct s_smc *smc, int event)
{
u_long time ;
#ifndef SMT_REAL_TOKEN_CT
int i ;
#endif
if (smc->sm.please_reconnect) {
smc->sm.please_reconnect -- ;
if (smc->sm.please_reconnect == 0) {
queue_event(smc,EVENT_ECM,EC_CONNECT) ;
}
}
if (event == SM_FAST)
return ;
smt_timer_poll(smc) ;
smt_start_watchdog(smc) ;
#ifndef SLIM_SMT
#ifndef BOOT
#ifdef ESS
ess_timer_poll(smc) ;
#endif
#endif
#ifdef SBA
sba_timer_poll(smc) ;
#endif
smt_srf_event(smc,0,0,0) ;
#endif
time = smt_get_time() ;
if (time - smc->sm.smt_last_lem >= TICKS_PER_SECOND*8) {
struct fddi_mib_m *mib ;
u_long upper ;
u_long lower ;
int cond ;
int port;
struct s_phy *phy ;
sm_lem_evaluate(smc) ;
smc->sm.smt_last_lem = time ;
#ifndef SLIM_SMT
mac_update_counter(smc) ;
mib = smc->mib.m ;
upper =
(mib->fddiMACLost_Ct - mib->fddiMACOld_Lost_Ct) +
(mib->fddiMACError_Ct - mib->fddiMACOld_Error_Ct) ;
lower =
(mib->fddiMACFrame_Ct - mib->fddiMACOld_Frame_Ct) +
(mib->fddiMACLost_Ct - mib->fddiMACOld_Lost_Ct) ;
mib->fddiMACFrameErrorRatio = div_ratio(upper,lower) ;
cond =
((!mib->fddiMACFrameErrorThreshold &&
mib->fddiMACError_Ct != mib->fddiMACOld_Error_Ct) ||
(mib->fddiMACFrameErrorRatio >
mib->fddiMACFrameErrorThreshold)) ;
if (cond != mib->fddiMACFrameErrorFlag)
smt_srf_event(smc,SMT_COND_MAC_FRAME_ERROR,
INDEX_MAC,cond) ;
upper =
(mib->fddiMACNotCopied_Ct - mib->fddiMACOld_NotCopied_Ct) ;
lower =
upper +
(mib->fddiMACCopied_Ct - mib->fddiMACOld_Copied_Ct) ;
mib->fddiMACNotCopiedRatio = div_ratio(upper,lower) ;
cond =
((!mib->fddiMACNotCopiedThreshold &&
mib->fddiMACNotCopied_Ct !=
mib->fddiMACOld_NotCopied_Ct)||
(mib->fddiMACNotCopiedRatio >
mib->fddiMACNotCopiedThreshold)) ;
if (cond != mib->fddiMACNotCopiedFlag)
smt_srf_event(smc,SMT_COND_MAC_NOT_COPIED,
INDEX_MAC,cond) ;
mib->fddiMACOld_Frame_Ct = mib->fddiMACFrame_Ct ;
mib->fddiMACOld_Copied_Ct = mib->fddiMACCopied_Ct ;
mib->fddiMACOld_Error_Ct = mib->fddiMACError_Ct ;
mib->fddiMACOld_Lost_Ct = mib->fddiMACLost_Ct ;
mib->fddiMACOld_NotCopied_Ct = mib->fddiMACNotCopied_Ct ;
for (port = 0; port < NUMPHYS; port ++) {
phy = &smc->y[port] ;
if (!phy->mib->fddiPORTHardwarePresent) {
continue;
}
cond = (phy->mib->fddiPORTEBError_Ct -
phy->mib->fddiPORTOldEBError_Ct > 5) ;
smt_srf_event(smc,SMT_COND_PORT_EB_ERROR,
(int) (INDEX_PORT+ phy->np) ,cond) ;
phy->mib->fddiPORTOldEBError_Ct =
phy->mib->fddiPORTEBError_Ct ;
}
#endif
}
#ifndef SLIM_SMT
if (time - smc->sm.smt_last_notify >= (u_long)
(smc->mib.fddiSMTTT_Notify * TICKS_PER_SECOND) ) {
if (!smc->sm.pend[SMT_TID_NIF])
smc->sm.pend[SMT_TID_NIF] = smt_get_tid(smc) ;
smt_send_nif(smc,&fddi_broadcast, FC_SMT_NSA,
smc->sm.pend[SMT_TID_NIF], SMT_REQUEST,0) ;
smc->sm.smt_last_notify = time ;
}
if (smc->sm.smt_tvu &&
time - smc->sm.smt_tvu > 228*TICKS_PER_SECOND) {
DB_SMT("SMT : UNA expired\n",0,0) ;
smc->sm.smt_tvu = 0 ;
if (!is_equal(&smc->mib.m[MAC0].fddiMACUpstreamNbr,
&SMT_Unknown)){
smc->mib.m[MAC0].fddiMACOldUpstreamNbr=
smc->mib.m[MAC0].fddiMACUpstreamNbr ;
}
smc->mib.m[MAC0].fddiMACUpstreamNbr = SMT_Unknown ;
smc->mib.m[MAC0].fddiMACUNDA_Flag = FALSE ;
update_dac(smc,0) ;
smt_srf_event(smc, SMT_EVENT_MAC_NEIGHBOR_CHANGE,
INDEX_MAC,0) ;
}
if (smc->sm.smt_tvd &&
time - smc->sm.smt_tvd > 228*TICKS_PER_SECOND) {
DB_SMT("SMT : DNA expired\n",0,0) ;
smc->sm.smt_tvd = 0 ;
if (!is_equal(&smc->mib.m[MAC0].fddiMACDownstreamNbr,
&SMT_Unknown)){
smc->mib.m[MAC0].fddiMACOldDownstreamNbr=
smc->mib.m[MAC0].fddiMACDownstreamNbr ;
}
smc->mib.m[MAC0].fddiMACDownstreamNbr = SMT_Unknown ;
smt_srf_event(smc, SMT_EVENT_MAC_NEIGHBOR_CHANGE,
INDEX_MAC,0) ;
}
#endif
#ifndef SMT_REAL_TOKEN_CT
for (i = MAC0; i < NUMMACS; i++ ){
if (time - smc->sm.last_tok_time[i] > 2*TICKS_PER_SECOND ){
smt_emulate_token_ct( smc, i );
}
}
#endif
smt_timer_start(smc,&smc->sm.smt_timer, (u_long)1000000L,
EV_TOKEN(EVENT_SMT,SM_TIMER)) ;
}
/*ARGSUSED1*/
void smt_event(struct s_smc *smc, int event)
{
u_long time ;
#ifndef SMT_REAL_TOKEN_CT
int i ;
#endif
if (smc->sm.please_reconnect) {
smc->sm.please_reconnect -- ;
if (smc->sm.please_reconnect == 0) {
/* Counted down */
queue_event(smc,EVENT_ECM,EC_CONNECT) ;
}
}
if (event == SM_FAST)
return ;
/*
* timer for periodic cleanup in driver
* reset and start the watchdog (FM2)
* ESS timer
* SBA timer
*/
smt_timer_poll(smc) ;
smt_start_watchdog(smc) ;
#ifndef SLIM_SMT
#ifndef BOOT
#ifdef ESS
ess_timer_poll(smc) ;
#endif
#endif
#ifdef SBA
sba_timer_poll(smc) ;
#endif
smt_srf_event(smc,0,0,0) ;
#endif /* no SLIM_SMT */
time = smt_get_time() ;
if (time - smc->sm.smt_last_lem >= TICKS_PER_SECOND*8) {
/*
* Use 8 sec. for the time intervall, it simplifies the
* LER estimation.
*/
struct fddi_mib_m *mib ;
u_long upper ;
u_long lower ;
int cond ;
int port;
struct s_phy *phy ;
/*
* calculate LEM bit error rate
*/
sm_lem_evaluate(smc) ;
smc->sm.smt_last_lem = time ;
/*
* check conditions
*/
#ifndef SLIM_SMT
mac_update_counter(smc) ;
mib = smc->mib.m ;
upper =
(mib->fddiMACLost_Ct - mib->fddiMACOld_Lost_Ct) +
(mib->fddiMACError_Ct - mib->fddiMACOld_Error_Ct) ;
lower =
(mib->fddiMACFrame_Ct - mib->fddiMACOld_Frame_Ct) +
(mib->fddiMACLost_Ct - mib->fddiMACOld_Lost_Ct) ;
mib->fddiMACFrameErrorRatio = div_ratio(upper,lower) ;
cond =
((!mib->fddiMACFrameErrorThreshold &&
mib->fddiMACError_Ct != mib->fddiMACOld_Error_Ct) ||
(mib->fddiMACFrameErrorRatio >
mib->fddiMACFrameErrorThreshold)) ;
if (cond != mib->fddiMACFrameErrorFlag)
smt_srf_event(smc,SMT_COND_MAC_FRAME_ERROR,
INDEX_MAC,cond) ;
upper =
(mib->fddiMACNotCopied_Ct - mib->fddiMACOld_NotCopied_Ct) ;
lower =
upper +
(mib->fddiMACCopied_Ct - mib->fddiMACOld_Copied_Ct) ;
mib->fddiMACNotCopiedRatio = div_ratio(upper,lower) ;
cond =
((!mib->fddiMACNotCopiedThreshold &&
mib->fddiMACNotCopied_Ct !=
mib->fddiMACOld_NotCopied_Ct)||
(mib->fddiMACNotCopiedRatio >
mib->fddiMACNotCopiedThreshold)) ;
if (cond != mib->fddiMACNotCopiedFlag)
smt_srf_event(smc,SMT_COND_MAC_NOT_COPIED,
INDEX_MAC,cond) ;
/*
* set old values
*/
mib->fddiMACOld_Frame_Ct = mib->fddiMACFrame_Ct ;
mib->fddiMACOld_Copied_Ct = mib->fddiMACCopied_Ct ;
mib->fddiMACOld_Error_Ct = mib->fddiMACError_Ct ;
mib->fddiMACOld_Lost_Ct = mib->fddiMACLost_Ct ;
mib->fddiMACOld_NotCopied_Ct = mib->fddiMACNotCopied_Ct ;
/*
* Check port EBError Condition
*/
for (port = 0; port < NUMPHYS; port ++) {
phy = &smc->y[port] ;
if (!phy->mib->fddiPORTHardwarePresent) {
continue;
}
cond = (phy->mib->fddiPORTEBError_Ct -
phy->mib->fddiPORTOldEBError_Ct > 5) ;
/* If ratio is more than 5 in 8 seconds
* Set the condition.
*/
smt_srf_event(smc,SMT_COND_PORT_EB_ERROR,
(int) (INDEX_PORT+ phy->np) ,cond) ;
/*
* set old values
*/
phy->mib->fddiPORTOldEBError_Ct =
phy->mib->fddiPORTEBError_Ct ;
}
#endif /* no SLIM_SMT */
}
#ifndef SLIM_SMT
if (time - smc->sm.smt_last_notify >= (u_long)
(smc->mib.fddiSMTTT_Notify * TICKS_PER_SECOND) ) {
/*
* we can either send an announcement or a request
* a request will trigger a reply so that we can update
* our dna
* note: same tid must be used until reply is received
*/
if (!smc->sm.pend[SMT_TID_NIF])
smc->sm.pend[SMT_TID_NIF] = smt_get_tid(smc) ;
smt_send_nif(smc,&fddi_broadcast, FC_SMT_NSA,
smc->sm.pend[SMT_TID_NIF], SMT_REQUEST,0) ;
smc->sm.smt_last_notify = time ;
}
/*
* check timer
*/
if (smc->sm.smt_tvu &&
time - smc->sm.smt_tvu > 228*TICKS_PER_SECOND) {
DB_SMT("SMT : UNA expired\n",0,0) ;
smc->sm.smt_tvu = 0 ;
if (!is_equal(&smc->mib.m[MAC0].fddiMACUpstreamNbr,
&SMT_Unknown)){
/* Do not update unknown address */
smc->mib.m[MAC0].fddiMACOldUpstreamNbr=
smc->mib.m[MAC0].fddiMACUpstreamNbr ;
}
smc->mib.m[MAC0].fddiMACUpstreamNbr = SMT_Unknown ;
smc->mib.m[MAC0].fddiMACUNDA_Flag = FALSE ;
/*
* Make sure the fddiMACUNDA_Flag = FALSE is
* included in the SRF so we don't generate
* a separate SRF for the deassertion of this
* condition
*/
update_dac(smc,0) ;
smt_srf_event(smc, SMT_EVENT_MAC_NEIGHBOR_CHANGE,
INDEX_MAC,0) ;
}
if (smc->sm.smt_tvd &&
time - smc->sm.smt_tvd > 228*TICKS_PER_SECOND) {
DB_SMT("SMT : DNA expired\n",0,0) ;
smc->sm.smt_tvd = 0 ;
if (!is_equal(&smc->mib.m[MAC0].fddiMACDownstreamNbr,
&SMT_Unknown)){
/* Do not update unknown address */
smc->mib.m[MAC0].fddiMACOldDownstreamNbr=
smc->mib.m[MAC0].fddiMACDownstreamNbr ;
}
smc->mib.m[MAC0].fddiMACDownstreamNbr = SMT_Unknown ;
smt_srf_event(smc, SMT_EVENT_MAC_NEIGHBOR_CHANGE,
INDEX_MAC,0) ;
}
#endif /* no SLIM_SMT */
#ifndef SMT_REAL_TOKEN_CT
/*
* Token counter emulation section. If hardware supports the token
* count, the token counter will be updated in mac_update_counter.
*/
for (i = MAC0; i < NUMMACS; i++ ){
if (time - smc->sm.last_tok_time[i] > 2*TICKS_PER_SECOND ){
smt_emulate_token_ct( smc, i );
}
}
#endif
smt_timer_start(smc,&smc->sm.smt_timer, (u_long)1000000L,
EV_TOKEN(EVENT_SMT,SM_TIMER)) ;
}