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smt.c
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/******************************************************************************
*
* (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.
*
******************************************************************************/
#include "h/types.h"
#include "h/fddi.h"
#include "h/smc.h"
#include "h/smt_p.h"
#define KERNEL
#include "h/smtstate.h"
#ifndef lint
static const char ID_sccs[] = "@(#)smt.c 2.43 98/11/23 (C) SK " ;
#endif
extern const u_char canonical[256] ;
/*
* FC in SMbuf
*/
#define m_fc(mb) ((mb)->sm_data[0])
#define SMT_TID_MAGIC 0x1f0a7b3c
#ifdef DEBUG
static const char *const smt_type_name[] = {
"SMT_00??", "SMT_INFO", "SMT_02??", "SMT_03??",
"SMT_04??", "SMT_05??", "SMT_06??", "SMT_07??",
"SMT_08??", "SMT_09??", "SMT_0A??", "SMT_0B??",
"SMT_0C??", "SMT_0D??", "SMT_0E??", "SMT_NSA"
} ;
static const char *const smt_class_name[] = {
"UNKNOWN","NIF","SIF_CONFIG","SIF_OPER","ECF","RAF","RDF",
"SRF","PMF_GET","PMF_SET","ESF"
} ;
#endif
#define LAST_CLASS (SMT_PMF_SET)
static const struct fddi_addr SMT_Unknown = {
{ 0,0,0x1f,0,0,0 }
} ;
/*
* external variables
*/
extern const struct fddi_addr fddi_broadcast ;
/*
* external functions
*/
int pcm_status_twisted(struct s_smc *smc);
/*
* function prototypes
*/
#ifdef LITTLE_ENDIAN
static int smt_swap_short(u_short s);
#endif
static int mac_index(struct s_smc *smc, int mac);
static int phy_index(struct s_smc *smc, int phy);
static int mac_con_resource_index(struct s_smc *smc, int mac);
static int phy_con_resource_index(struct s_smc *smc, int phy);
static void smt_send_rdf(struct s_smc *smc, SMbuf *rej, int fc, int reason,
int local);
static void smt_send_nif(struct s_smc *smc, const struct fddi_addr *dest,
int fc, u_long tid, int type, int local);
static void smt_send_ecf(struct s_smc *smc, struct fddi_addr *dest, int fc,
u_long tid, int type, int len);
static void smt_echo_test(struct s_smc *smc, int dna);
static void smt_send_sif_config(struct s_smc *smc, struct fddi_addr *dest,
u_long tid, int local);
static void smt_send_sif_operation(struct s_smc *smc, struct fddi_addr *dest,
u_long tid, int local);
#ifdef LITTLE_ENDIAN
static void smt_string_swap(char *data, const char *format, int len);
#endif
static void smt_add_frame_len(SMbuf *mb, int len);
static void smt_fill_una(struct s_smc *smc, struct smt_p_una *una);
static void smt_fill_sde(struct s_smc *smc, struct smt_p_sde *sde);
static void smt_fill_state(struct s_smc *smc, struct smt_p_state *state);
static void smt_fill_timestamp(struct s_smc *smc, struct smt_p_timestamp *ts);
static void smt_fill_policy(struct s_smc *smc, struct smt_p_policy *policy);
static void smt_fill_latency(struct s_smc *smc, struct smt_p_latency *latency);
static void smt_fill_neighbor(struct s_smc *smc, struct smt_p_neighbor *neighbor);
static int smt_fill_path(struct s_smc *smc, struct smt_p_path *path);
static void smt_fill_mac_status(struct s_smc *smc, struct smt_p_mac_status *st);
static void smt_fill_lem(struct s_smc *smc, struct smt_p_lem *lem, int phy);
static void smt_fill_version(struct s_smc *smc, struct smt_p_version *vers);
static void smt_fill_fsc(struct s_smc *smc, struct smt_p_fsc *fsc);
static void smt_fill_mac_counter(struct s_smc *smc, struct smt_p_mac_counter *mc);
static void smt_fill_mac_fnc(struct s_smc *smc, struct smt_p_mac_fnc *fnc);
static void smt_fill_manufacturer(struct s_smc *smc,
struct smp_p_manufacturer *man);
static void smt_fill_user(struct s_smc *smc, struct smp_p_user *user);
static void smt_fill_setcount(struct s_smc *smc, struct smt_p_setcount *setcount);
static void smt_fill_echo(struct s_smc *smc, struct smt_p_echo *echo, u_long seed,
int len);
static void smt_clear_una_dna(struct s_smc *smc);
static void smt_clear_old_una_dna(struct s_smc *smc);
#ifdef CONCENTRATOR
static int entity_to_index(void);
#endif
static void update_dac(struct s_smc *smc, int report);
static int div_ratio(u_long upper, u_long lower);
#ifdef USE_CAN_ADDR
static void hwm_conv_can(struct s_smc *smc, char *data, int len);
#else
#define hwm_conv_can(smc,data,len)
#endif
static inline int is_my_addr(const struct s_smc *smc,
const struct fddi_addr *addr)
{
return(*(short *)(&addr->a[0]) ==
*(short *)(&smc->mib.m[MAC0].fddiMACSMTAddress.a[0])
&& *(short *)(&addr->a[2]) ==
*(short *)(&smc->mib.m[MAC0].fddiMACSMTAddress.a[2])
&& *(short *)(&addr->a[4]) ==
*(short *)(&smc->mib.m[MAC0].fddiMACSMTAddress.a[4])) ;
}
static inline int is_broadcast(const struct fddi_addr *addr)
{
return(*(u_short *)(&addr->a[0]) == 0xffff &&
*(u_short *)(&addr->a[2]) == 0xffff &&
*(u_short *)(&addr->a[4]) == 0xffff ) ;
}
static inline int is_individual(const struct fddi_addr *addr)
{
return(!(addr->a[0] & GROUP_ADDR)) ;
}
static inline int is_equal(const struct fddi_addr *addr1,
const struct fddi_addr *addr2)
{
return(*(u_short *)(&addr1->a[0]) == *(u_short *)(&addr2->a[0]) &&
*(u_short *)(&addr1->a[2]) == *(u_short *)(&addr2->a[2]) &&
*(u_short *)(&addr1->a[4]) == *(u_short *)(&addr2->a[4]) ) ;
}
/*
* list of mandatory paras in frames
*/
static const u_short plist_nif[] = { SMT_P_UNA,SMT_P_SDE,SMT_P_STATE,0 } ;
/*
* init SMT agent
*/
void smt_agent_init(struct s_smc *smc)
{
int i ;
/*
* get MAC address
*/
smc->mib.m[MAC0].fddiMACSMTAddress = smc->hw.fddi_home_addr ;
/*
* get OUI address from driver (bia == built-in-address)
*/
smc->mib.fddiSMTStationId.sid_oem[0] = 0 ;
smc->mib.fddiSMTStationId.sid_oem[1] = 0 ;
driver_get_bia(smc,&smc->mib.fddiSMTStationId.sid_node) ;
for (i = 0 ; i < 6 ; i ++) {
smc->mib.fddiSMTStationId.sid_node.a[i] =
canonical[smc->mib.fddiSMTStationId.sid_node.a[i]] ;
}
smc->mib.fddiSMTManufacturerData[0] =
smc->mib.fddiSMTStationId.sid_node.a[0] ;
smc->mib.fddiSMTManufacturerData[1] =
smc->mib.fddiSMTStationId.sid_node.a[1] ;
smc->mib.fddiSMTManufacturerData[2] =
smc->mib.fddiSMTStationId.sid_node.a[2] ;
smc->sm.smt_tid = 0 ;
smc->mib.m[MAC0].fddiMACDupAddressTest = DA_NONE ;
smc->mib.m[MAC0].fddiMACUNDA_Flag = FALSE ;
#ifndef SLIM_SMT
smt_clear_una_dna(smc) ;
smt_clear_old_una_dna(smc) ;
#endif
for (i = 0 ; i < SMT_MAX_TEST ; i++)
smc->sm.pend[i] = 0 ;
smc->sm.please_reconnect = 0 ;
smc->sm.uniq_ticks = 0 ;
}
/*
* SMT task
* forever
* delay 30 seconds
* send NIF
* check tvu & tvd
* end
*/
void smt_agent_task(struct s_smc *smc)
{
smt_timer_start(smc,&smc->sm.smt_timer, (u_long)1000000L,
EV_TOKEN(EVENT_SMT,SM_TIMER)) ;
DB_SMT("SMT agent task\n",0,0) ;
}
#ifndef SMT_REAL_TOKEN_CT
void smt_emulate_token_ct(struct s_smc *smc, int mac_index)
{
u_long count;
u_long time;
time = smt_get_time();
count = ((time - smc->sm.last_tok_time[mac_index]) *
100)/TICKS_PER_SECOND;
/*
* Only when ring is up we will have a token count. The
* flag is unfortunatly a single instance value. This
* doesn't matter now, because we currently have only
* one MAC instance.
*/
if (smc->hw.mac_ring_is_up){
smc->mib.m[mac_index].fddiMACToken_Ct += count;
}
/* Remember current time */
smc->sm.last_tok_time[mac_index] = time;
}
#endif
/*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)) ;
}
static int div_ratio(u_long upper, u_long lower)
{
if ((upper<<16L) < upper)
upper = 0xffff0000L ;
else
upper <<= 16L ;
if (!lower)
return(0) ;
return((int)(upper/lower)) ;
}
#ifndef SLIM_SMT
/*
* receive packet handler
*/
void smt_received_pack(struct s_smc *smc, SMbuf *mb, int fs)
/* int fs; frame status */
{
struct smt_header *sm ;
int local ;
int illegal = 0 ;
switch (m_fc(mb)) {
case FC_SMT_INFO :
case FC_SMT_LAN_LOC :
case FC_SMT_LOC :
case FC_SMT_NSA :
break ;
default :
smt_free_mbuf(smc,mb) ;
return ;
}
smc->mib.m[MAC0].fddiMACSMTCopied_Ct++ ;
sm = smtod(mb,struct smt_header *) ;
local = ((fs & L_INDICATOR) != 0) ;
hwm_conv_can(smc,(char *)sm,12) ;
/* check destination address */
if (is_individual(&sm->smt_dest) && !is_my_addr(smc,&sm->smt_dest)) {
smt_free_mbuf(smc,mb) ;
return ;
}
#if 0 /* for DUP recognition, do NOT filter them */
/* ignore loop back packets */
if (is_my_addr(smc,&sm->smt_source) && !local) {
smt_free_mbuf(smc,mb) ;
return ;
}
#endif
smt_swap_para(sm,(int) mb->sm_len,1) ;
DB_SMT("SMT : received packet [%s] at 0x%x\n",
smt_type_name[m_fc(mb) & 0xf],sm) ;
DB_SMT("SMT : version %d, class %s\n",sm->smt_version,
smt_class_name[(sm->smt_class>LAST_CLASS)?0 : sm->smt_class]) ;
#ifdef SBA
/*
* check if NSA frame
*/
if (m_fc(mb) == FC_SMT_NSA && sm->smt_class == SMT_NIF &&
(sm->smt_type == SMT_ANNOUNCE || sm->smt_type == SMT_REQUEST)) {
smc->sba.sm = sm ;
sba(smc,NIF) ;
}
#endif
/*
* ignore any packet with NSA and A-indicator set
*/
if ( (fs & A_INDICATOR) && m_fc(mb) == FC_SMT_NSA) {
DB_SMT("SMT : ignoring NSA with A-indicator set from %s\n",
addr_to_string(&sm->smt_source),0) ;
smt_free_mbuf(smc,mb) ;
return ;
}
/*
* ignore frames with illegal length
*/
if (((sm->smt_class == SMT_ECF) && (sm->smt_len > SMT_MAX_ECHO_LEN)) ||
((sm->smt_class != SMT_ECF) && (sm->smt_len > SMT_MAX_INFO_LEN))) {
smt_free_mbuf(smc,mb) ;
return ;
}
/*
* check SMT version
*/
switch (sm->smt_class) {
case SMT_NIF :
case SMT_SIF_CONFIG :
case SMT_SIF_OPER :
case SMT_ECF :
if (sm->smt_version != SMT_VID)
illegal = 1;
break ;
default :
if (sm->smt_version != SMT_VID_2)
illegal = 1;
break ;
}
if (illegal) {
DB_SMT("SMT : version = %d, dest = %s\n",
sm->smt_version,addr_to_string(&sm->smt_source)) ;
smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_VERSION,local) ;
smt_free_mbuf(smc,mb) ;
return ;
}
if ((sm->smt_len > mb->sm_len - sizeof(struct smt_header)) ||
((sm->smt_len & 3) && (sm->smt_class != SMT_ECF))) {
DB_SMT("SMT: info length error, len = %d\n",sm->smt_len,0) ;
smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_LENGTH,local) ;
smt_free_mbuf(smc,mb) ;
return ;
}
switch (sm->smt_class) {
case SMT_NIF :
if (smt_check_para(smc,sm,plist_nif)) {
DB_SMT("SMT: NIF with para problem, ignoring\n",0,0) ;
break ;
} ;
switch (sm->smt_type) {
case SMT_ANNOUNCE :
case SMT_REQUEST :
if (!(fs & C_INDICATOR) && m_fc(mb) == FC_SMT_NSA
&& is_broadcast(&sm->smt_dest)) {
struct smt_p_state *st ;
/* set my UNA */
if (!is_equal(
&smc->mib.m[MAC0].fddiMACUpstreamNbr,
&sm->smt_source)) {
DB_SMT("SMT : updated my UNA = %s\n",
addr_to_string(&sm->smt_source),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 =
sm->smt_source ;
smt_srf_event(smc,
SMT_EVENT_MAC_NEIGHBOR_CHANGE,
INDEX_MAC,0) ;
smt_echo_test(smc,0) ;
}
smc->sm.smt_tvu = smt_get_time() ;
st = (struct smt_p_state *)
sm_to_para(smc,sm,SMT_P_STATE) ;
if (st) {
smc->mib.m[MAC0].fddiMACUNDA_Flag =
(st->st_dupl_addr & SMT_ST_MY_DUPA) ?
TRUE : FALSE ;
update_dac(smc,1) ;
}
}
if ((sm->smt_type == SMT_REQUEST) &&
is_individual(&sm->smt_source) &&
((!(fs & A_INDICATOR) && m_fc(mb) == FC_SMT_NSA) ||
(m_fc(mb) != FC_SMT_NSA))) {
DB_SMT("SMT : replying to NIF request %s\n",
addr_to_string(&sm->smt_source),0) ;
smt_send_nif(smc,&sm->smt_source,
FC_SMT_INFO,
sm->smt_tid,
SMT_REPLY,local) ;
}
break ;
case SMT_REPLY :
DB_SMT("SMT : received NIF response from %s\n",
addr_to_string(&sm->smt_source),0) ;
if (fs & A_INDICATOR) {
smc->sm.pend[SMT_TID_NIF] = 0 ;
DB_SMT("SMT : duplicate address\n",0,0) ;
smc->mib.m[MAC0].fddiMACDupAddressTest =
DA_FAILED ;
smc->r.dup_addr_test = DA_FAILED ;
queue_event(smc,EVENT_RMT,RM_DUP_ADDR) ;
smc->mib.m[MAC0].fddiMACDA_Flag = TRUE ;
update_dac(smc,1) ;
break ;
}
if (sm->smt_tid == smc->sm.pend[SMT_TID_NIF]) {
smc->sm.pend[SMT_TID_NIF] = 0 ;
/* set my DNA */
if (!is_equal(
&smc->mib.m[MAC0].fddiMACDownstreamNbr,
&sm->smt_source)) {
DB_SMT("SMT : updated my DNA\n",0,0) ;
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 =
sm->smt_source ;
smt_srf_event(smc,
SMT_EVENT_MAC_NEIGHBOR_CHANGE,
INDEX_MAC,0) ;
smt_echo_test(smc,1) ;
}
smc->mib.m[MAC0].fddiMACDA_Flag = FALSE ;
update_dac(smc,1) ;
smc->sm.smt_tvd = smt_get_time() ;
smc->mib.m[MAC0].fddiMACDupAddressTest =
DA_PASSED ;
if (smc->r.dup_addr_test != DA_PASSED) {
smc->r.dup_addr_test = DA_PASSED ;
queue_event(smc,EVENT_RMT,RM_DUP_ADDR) ;
}
}
else if (sm->smt_tid ==
smc->sm.pend[SMT_TID_NIF_TEST]) {
DB_SMT("SMT : NIF test TID ok\n",0,0) ;
}
else {
DB_SMT("SMT : expected TID %lx, got %lx\n",
smc->sm.pend[SMT_TID_NIF],sm->smt_tid) ;
}
break ;
default :
illegal = 2 ;
break ;
}
break ;
case SMT_SIF_CONFIG : /* station information */
if (sm->smt_type != SMT_REQUEST)
break ;
DB_SMT("SMT : replying to SIF Config request from %s\n",
addr_to_string(&sm->smt_source),0) ;
smt_send_sif_config(smc,&sm->smt_source,sm->smt_tid,local) ;
break ;
case SMT_SIF_OPER : /* station information */
if (sm->smt_type != SMT_REQUEST)
break ;
DB_SMT("SMT : replying to SIF Operation request from %s\n",
addr_to_string(&sm->smt_source),0) ;
smt_send_sif_operation(smc,&sm->smt_source,sm->smt_tid,local) ;
break ;
case SMT_ECF : /* echo frame */
switch (sm->smt_type) {
case SMT_REPLY :
smc->mib.priv.fddiPRIVECF_Reply_Rx++ ;
DB_SMT("SMT: received ECF reply from %s\n",
addr_to_string(&sm->smt_source),0) ;
if (sm_to_para(smc,sm,SMT_P_ECHODATA) == 0) {
DB_SMT("SMT: ECHODATA missing\n",0,0) ;
break ;
}
if (sm->smt_tid == smc->sm.pend[SMT_TID_ECF]) {
DB_SMT("SMT : ECF test TID ok\n",0,0) ;
}
else if (sm->smt_tid == smc->sm.pend[SMT_TID_ECF_UNA]) {
DB_SMT("SMT : ECF test UNA ok\n",0,0) ;
}
else if (sm->smt_tid == smc->sm.pend[SMT_TID_ECF_DNA]) {
DB_SMT("SMT : ECF test DNA ok\n",0,0) ;
}
else {
DB_SMT("SMT : expected TID %lx, got %lx\n",
smc->sm.pend[SMT_TID_ECF],
sm->smt_tid) ;
}
break ;
case SMT_REQUEST :
smc->mib.priv.fddiPRIVECF_Req_Rx++ ;
{
if (sm->smt_len && !sm_to_para(smc,sm,SMT_P_ECHODATA)) {
DB_SMT("SMT: ECF with para problem,sending RDF\n",0,0) ;
smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_LENGTH,
local) ;
break ;
}
DB_SMT("SMT - sending ECF reply to %s\n",
addr_to_string(&sm->smt_source),0) ;
/* set destination addr. & reply */
sm->smt_dest = sm->smt_source ;
sm->smt_type = SMT_REPLY ;
dump_smt(smc,sm,"ECF REPLY") ;
smc->mib.priv.fddiPRIVECF_Reply_Tx++ ;
smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
return ; /* DON'T free mbuf */
}
default :
illegal = 1 ;
break ;
}
break ;
#ifndef BOOT
case SMT_RAF : /* resource allocation */
#ifdef ESS
DB_ESSN(2,"ESS: RAF frame received\n",0,0) ;
fs = ess_raf_received_pack(smc,mb,sm,fs) ;
#endif
#ifdef SBA
DB_SBAN(2,"SBA: RAF frame received\n",0,0) ;
sba_raf_received_pack(smc,sm,fs) ;
#endif
break ;
case SMT_RDF : /* request denied */
smc->mib.priv.fddiPRIVRDF_Rx++ ;
break ;
case SMT_ESF : /* extended service - not supported */
if (sm->smt_type == SMT_REQUEST) {
DB_SMT("SMT - received ESF, sending RDF\n",0,0) ;
smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_CLASS,local) ;
}
break ;
case SMT_PMF_GET :
case SMT_PMF_SET :
if (sm->smt_type != SMT_REQUEST)
break ;
/* update statistics */
if (sm->smt_class == SMT_PMF_GET)
smc->mib.priv.fddiPRIVPMF_Get_Rx++ ;
else
smc->mib.priv.fddiPRIVPMF_Set_Rx++ ;
/*
* ignore PMF SET with I/G set
*/
if ((sm->smt_class == SMT_PMF_SET) &&
!is_individual(&sm->smt_dest)) {
DB_SMT("SMT: ignoring PMF-SET with I/G set\n",0,0) ;
break ;
}
smt_pmf_received_pack(smc,mb, local) ;
break ;
case SMT_SRF :
dump_smt(smc,sm,"SRF received") ;
break ;
default :
if (sm->smt_type != SMT_REQUEST)
break ;
/*
* For frames with unknown class:
* we need to send a RDF frame according to 8.1.3.1.1,
* only if it is a REQUEST.
*/
DB_SMT("SMT : class = %d, send RDF to %s\n",
sm->smt_class, addr_to_string(&sm->smt_source)) ;
smt_send_rdf(smc,mb,m_fc(mb),SMT_RDF_CLASS,local) ;
break ;
#endif
}
if (illegal) {
DB_SMT("SMT: discarding invalid frame, reason = %d\n",
illegal,0) ;
}
smt_free_mbuf(smc,mb) ;
}
static void update_dac(struct s_smc *smc, int report)
{
int cond ;
cond = ( smc->mib.m[MAC0].fddiMACUNDA_Flag |
smc->mib.m[MAC0].fddiMACDA_Flag) != 0 ;
if (report && (cond != smc->mib.m[MAC0].fddiMACDuplicateAddressCond))
smt_srf_event(smc, SMT_COND_MAC_DUP_ADDR,INDEX_MAC,cond) ;
else
smc->mib.m[MAC0].fddiMACDuplicateAddressCond = cond ;
}
/*
* send SMT frame
* set source address
* set station ID
* send frame
*/
void smt_send_frame(struct s_smc *smc, SMbuf *mb, int fc, int local)
/* SMbuf *mb; buffer to send */
/* int fc; FC value */
{
struct smt_header *sm ;
if (!smc->r.sm_ma_avail && !local) {
smt_free_mbuf(smc,mb) ;
return ;
}
sm = smtod(mb,struct smt_header *) ;
sm->smt_source = smc->mib.m[MAC0].fddiMACSMTAddress ;
sm->smt_sid = smc->mib.fddiSMTStationId ;
smt_swap_para(sm,(int) mb->sm_len,0) ; /* swap para & header */
hwm_conv_can(smc,(char *)sm,12) ; /* convert SA and DA */
smc->mib.m[MAC0].fddiMACSMTTransmit_Ct++ ;
smt_send_mbuf(smc,mb,local ? FC_SMT_LOC : fc) ;
}
/*
* generate and send RDF
*/
static void smt_send_rdf(struct s_smc *smc, SMbuf *rej, int fc, int reason,
int local)
/* SMbuf *rej; mbuf of offending frame */
/* int fc; FC of denied frame */
/* int reason; reason code */
{
SMbuf *mb ;
struct smt_header *sm ; /* header of offending frame */
struct smt_rdf *rdf ;
int len ;
int frame_len ;
sm = smtod(rej,struct smt_header *) ;
if (sm->smt_type != SMT_REQUEST)
return ;
DB_SMT("SMT: sending RDF to %s,reason = 0x%x\n",
addr_to_string(&sm->smt_source),reason) ;
/*
* note: get framelength from MAC length, NOT from SMT header
* smt header length is included in sm_len
*/
frame_len = rej->sm_len ;
if (!(mb=smt_build_frame(smc,SMT_RDF,SMT_REPLY,sizeof(struct smt_rdf))))
return ;
rdf = smtod(mb,struct smt_rdf *) ;
rdf->smt.smt_tid = sm->smt_tid ; /* use TID from sm */
rdf->smt.smt_dest = sm->smt_source ; /* set dest = source */
/* set P12 */
rdf->reason.para.p_type = SMT_P_REASON ;
rdf->reason.para.p_len = sizeof(struct smt_p_reason) - PARA_LEN ;
rdf->reason.rdf_reason = reason ;
/* set P14 */
rdf->version.para.p_type = SMT_P_VERSION ;
rdf->version.para.p_len = sizeof(struct smt_p_version) - PARA_LEN ;
rdf->version.v_pad = 0 ;
rdf->version.v_n = 1 ;
rdf->version.v_index = 1 ;
rdf->version.v_version[0] = SMT_VID_2 ;
rdf->version.v_pad2 = 0 ;
/* set P13 */
if ((unsigned) frame_len <= SMT_MAX_INFO_LEN - sizeof(*rdf) +
2*sizeof(struct smt_header))
len = frame_len ;
else
len = SMT_MAX_INFO_LEN - sizeof(*rdf) +
2*sizeof(struct smt_header) ;
/* make length multiple of 4 */
len &= ~3 ;
rdf->refused.para.p_type = SMT_P_REFUSED ;
/* length of para is smt_frame + ref_fc */
rdf->refused.para.p_len = len + 4 ;
rdf->refused.ref_fc = fc ;
/* swap it back */
smt_swap_para(sm,frame_len,0) ;
memcpy((char *) &rdf->refused.ref_header,(char *) sm,len) ;
len -= sizeof(struct smt_header) ;
mb->sm_len += len ;
rdf->smt.smt_len += len ;
dump_smt(smc,(struct smt_header *)rdf,"RDF") ;
smc->mib.priv.fddiPRIVRDF_Tx++ ;
smt_send_frame(smc,mb,FC_SMT_INFO,local) ;
}
/*
* generate and send NIF
*/
static void smt_send_nif(struct s_smc *smc, const struct fddi_addr *dest,
int fc, u_long tid, int type, int local)
/* struct fddi_addr *dest; dest address */
/* int fc; frame control */
/* u_long tid; transaction id */
/* int type; frame type */
{
struct smt_nif *nif ;
SMbuf *mb ;
if (!(mb = smt_build_frame(smc,SMT_NIF,type,sizeof(struct smt_nif))))
return ;
nif = smtod(mb, struct smt_nif *) ;
smt_fill_una(smc,&nif->una) ; /* set UNA */
smt_fill_sde(smc,&nif->sde) ; /* set station descriptor */
smt_fill_state(smc,&nif->state) ; /* set state information */
#ifdef SMT6_10
smt_fill_fsc(smc,&nif->fsc) ; /* set frame status cap. */
#endif
nif->smt.smt_dest = *dest ; /* destination address */
nif->smt.smt_tid = tid ; /* transaction ID */
dump_smt(smc,(struct smt_header *)nif,"NIF") ;
smt_send_frame(smc,mb,fc,local) ;
}
#ifdef DEBUG
/*
* send NIF request (test purpose)
*/
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) ;
}
/*
* send ECF request (test purpose)
*/
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) ;
}
#endif
/*
* echo test
*/
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 ?