void process_receive(struct s_smc *smc)
{
int i ;
int n ;
int frag_count ; /* number of RxDs of the curr rx buf */
int used_frags ; /* number of RxDs of the curr frame */
struct s_smt_rx_queue *queue ; /* points to the queue ctl struct */
struct s_smt_fp_rxd volatile *r ; /* rxd pointer */
struct s_smt_fp_rxd volatile *rxd ; /* first rxd of rx frame */
u_long rbctrl ; /* receive buffer control word */
u_long rfsw ; /* receive frame status word */
u_short rx_used ;
u_char far *virt ;
char far *data ;
SMbuf *mb ;
u_char fc ; /* Frame control */
int len ; /* Frame length */
smc->os.hwm.detec_count = 0 ;
queue = smc->hw.fp.rx[QUEUE_R1] ;
NDD_TRACE("RHxB",0,0,0) ;
for ( ; ; ) {
r = queue->rx_curr_get ;
rx_used = queue->rx_used ;
frag_count = 0 ;
#ifdef USE_BREAK_ISR
if (smc->os.hwm.leave_isr) {
goto rx_end ;
}
#endif
#ifdef NDIS_OS2
if (offDepth) {
smc->os.hwm.rx_break = 1 ;
goto rx_end ;
}
smc->os.hwm.rx_break = 0 ;
#endif
#ifdef ODI2
if (smc->os.hwm.rx_break) {
goto rx_end ;
}
#endif
n = 0 ;
do {
DB_RX("Check RxD %x for OWN and EOF",(void *)r,0,5) ;
DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
rbctrl = le32_to_cpu(CR_READ(r->rxd_rbctrl));
if (rbctrl & BMU_OWN) {
NDD_TRACE("RHxE",r,rfsw,rbctrl) ;
DB_RX("End of RxDs",0,0,4) ;
goto rx_end ;
}
/*
* out of RxD detection
*/
if (!rx_used) {
SK_BREAK() ;
SMT_PANIC(smc,HWM_E0009,HWM_E0009_MSG) ;
/* Either we don't have an RxD or all
* RxDs are filled. Therefore it's allowed
* for to set the STOPPED flag */
smc->hw.hw_state = STOPPED ;
mac_drv_clear_rx_queue(smc) ;
smc->hw.hw_state = STARTED ;
mac_drv_fill_rxd(smc) ;
smc->os.hwm.detec_count = 0 ;
goto rx_end ;
}
rfsw = le32_to_cpu(r->rxd_rfsw) ;
if ((rbctrl & BMU_STF) != ((rbctrl & BMU_ST_BUF) <<5)) {
/*
* The BMU_STF bit is deleted, 1 frame is
* placed into more than 1 rx buffer
*
* skip frame by setting the rx len to 0
*
* if fragment count == 0
* The missing STF bit belongs to the
* current frame, search for the
* EOF bit to complete the frame
* else
* the fragment belongs to the next frame,
* exit the loop and process the frame
*/
SK_BREAK() ;
rfsw = 0 ;
if (frag_count) {
break ;
}
}
n += rbctrl & 0xffff ;
r = r->rxd_next ;
frag_count++ ;
rx_used-- ;
} while (!(rbctrl & BMU_EOF)) ;
used_frags = frag_count ;
DB_RX("EOF set in RxD, used_frags = %d ",used_frags,0,5) ;
/* may be next 2 DRV_BUF_FLUSH() can be skipped, because */
/* BMU_ST_BUF will not be changed by the ASIC */
DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
while (rx_used && !(r->rxd_rbctrl & cpu_to_le32(BMU_ST_BUF))) {
DB_RX("Check STF bit in %x",(void *)r,0,5) ;
r = r->rxd_next ;
DRV_BUF_FLUSH(r,DDI_DMA_SYNC_FORCPU) ;
frag_count++ ;
rx_used-- ;
}
DB_RX("STF bit found",0,0,5) ;
/*
* The received frame is finished for the process receive
*/
rxd = queue->rx_curr_get ;
queue->rx_curr_get = r ;
queue->rx_free += frag_count ;
queue->rx_used = rx_used ;
/*
* ASIC Errata no. 7 (STF - Bit Bug)
*/
rxd->rxd_rbctrl &= cpu_to_le32(~BMU_STF) ;
for (r=rxd, i=frag_count ; i ; r=r->rxd_next, i--){
DB_RX("dma_complete for RxD %x",(void *)r,0,5) ;
dma_complete(smc,(union s_fp_descr volatile *)r,DMA_WR);
}
smc->hw.fp.err_stats.err_valid++ ;
smc->mib.m[MAC0].fddiMACCopied_Ct++ ;
/* the length of the data including the FC */
len = (rfsw & RD_LENGTH) - 4 ;
DB_RX("frame length = %d",len,0,4) ;
/*
* check the frame_length and all error flags
*/
if (rfsw & (RX_MSRABT|RX_FS_E|RX_FS_CRC|RX_FS_IMPL)){
if (rfsw & RD_S_MSRABT) {
DB_RX("Frame aborted by the FORMAC",0,0,2) ;
smc->hw.fp.err_stats.err_abort++ ;
}
/*
* check frame status
*/
if (rfsw & RD_S_SEAC2) {
DB_RX("E-Indicator set",0,0,2) ;
smc->hw.fp.err_stats.err_e_indicator++ ;
}
if (rfsw & RD_S_SFRMERR) {
DB_RX("CRC error",0,0,2) ;
smc->hw.fp.err_stats.err_crc++ ;
}
if (rfsw & RX_FS_IMPL) {
DB_RX("Implementer frame",0,0,2) ;
smc->hw.fp.err_stats.err_imp_frame++ ;
}
goto abort_frame ;
}
if (len > FDDI_RAW_MTU-4) {
DB_RX("Frame too long error",0,0,2) ;
smc->hw.fp.err_stats.err_too_long++ ;
goto abort_frame ;
}
/*
* SUPERNET 3 Bug: FORMAC delivers status words
* of aborded frames to the BMU
*/
if (len <= 4) {
DB_RX("Frame length = 0",0,0,2) ;
goto abort_frame ;
}
if (len != (n-4)) {
DB_RX("BMU: rx len differs: [%d:%d]",len,n,4);
smc->os.hwm.rx_len_error++ ;
goto abort_frame ;
}
/*
* Check SA == MA
*/
virt = (u_char far *) rxd->rxd_virt ;
DB_RX("FC = %x",*virt,0,2) ;
if (virt[12] == MA[5] &&
virt[11] == MA[4] &&
virt[10] == MA[3] &&
virt[9] == MA[2] &&
virt[8] == MA[1] &&
(virt[7] & ~GROUP_ADDR_BIT) == MA[0]) {
goto abort_frame ;
}
/*
* test if LLC frame
*/
if (rfsw & RX_FS_LLC) {
/*
* if pass_llc_promisc is disable
* if DA != Multicast or Broadcast or DA!=MA
* abort the frame
*/
if (!smc->os.hwm.pass_llc_promisc) {
if(!(virt[1] & GROUP_ADDR_BIT)) {
if (virt[6] != MA[5] ||
virt[5] != MA[4] ||
virt[4] != MA[3] ||
virt[3] != MA[2] ||
virt[2] != MA[1] ||
virt[1] != MA[0]) {
DB_RX("DA != MA and not multi- or broadcast",0,0,2) ;
goto abort_frame ;
}
}
}
/*
* LLC frame received
*/
DB_RX("LLC - receive",0,0,4) ;
mac_drv_rx_complete(smc,rxd,frag_count,len) ;
}
else {
if (!(mb = smt_get_mbuf(smc))) {
smc->hw.fp.err_stats.err_no_buf++ ;
DB_RX("No SMbuf; receive terminated",0,0,4) ;
goto abort_frame ;
}
data = smtod(mb,char *) - 1 ;
/*
* copy the frame into a SMT_MBuf
*/
#ifdef USE_OS_CPY
hwm_cpy_rxd2mb(rxd,data,len) ;
#else
for (r=rxd, i=used_frags ; i ; r=r->rxd_next, i--){
n = le32_to_cpu(r->rxd_rbctrl) & RD_LENGTH ;
DB_RX("cp SMT frame to mb: len = %d",n,0,6) ;
memcpy(data,r->rxd_virt,n) ;
data += n ;
}
data = smtod(mb,char *) - 1 ;
#endif
fc = *(char *)mb->sm_data = *data ;
mb->sm_len = len - 1 ; /* len - fc */
data++ ;
/*
* SMT frame received
*/
switch(fc) {
case FC_SMT_INFO :
smc->hw.fp.err_stats.err_smt_frame++ ;
DB_RX("SMT frame received ",0,0,5) ;
if (smc->os.hwm.pass_SMT) {
DB_RX("pass SMT frame ",0,0,5) ;
mac_drv_rx_complete(smc, rxd,
frag_count,len) ;
}
else {
DB_RX("requeue RxD",0,0,5) ;
mac_drv_requeue_rxd(smc,rxd,frag_count);
}
smt_received_pack(smc,mb,(int)(rfsw>>25)) ;
break ;
case FC_SMT_NSA :
smc->hw.fp.err_stats.err_smt_frame++ ;
DB_RX("SMT frame received ",0,0,5) ;
/* if pass_NSA set pass the NSA frame or */
/* pass_SMT set and the A-Indicator */
/* is not set, pass the NSA frame */
if (smc->os.hwm.pass_NSA ||
(smc->os.hwm.pass_SMT &&
!(rfsw & A_INDIC))) {
DB_RX("pass SMT frame ",0,0,5) ;
mac_drv_rx_complete(smc, rxd,
frag_count,len) ;
}
else {
DB_RX("requeue RxD",0,0,5) ;
mac_drv_requeue_rxd(smc,rxd,frag_count);
}
smt_received_pack(smc,mb,(int)(rfsw>>25)) ;
break ;
case FC_BEACON :
if (smc->os.hwm.pass_DB) {
DB_RX("pass DB frame ",0,0,5) ;
mac_drv_rx_complete(smc, rxd,
frag_count,len) ;
}
else {
DB_RX("requeue RxD",0,0,5) ;
mac_drv_requeue_rxd(smc,rxd,frag_count);
}
smt_free_mbuf(smc,mb) ;
break ;
default :
/*
* unknown FC abord the frame
*/
DB_RX("unknown FC error",0,0,2) ;
smt_free_mbuf(smc,mb) ;
DB_RX("requeue RxD",0,0,5) ;
mac_drv_requeue_rxd(smc,rxd,frag_count) ;
if ((fc & 0xf0) == FC_MAC)
smc->hw.fp.err_stats.err_mac_frame++ ;
else
smc->hw.fp.err_stats.err_imp_frame++ ;
break ;
}
}
DB_RX("next RxD is %x ",queue->rx_curr_get,0,3) ;
NDD_TRACE("RHx1",queue->rx_curr_get,0,0) ;
continue ;
/*--------------------------------------------------------------------*/
abort_frame:
DB_RX("requeue RxD",0,0,5) ;
mac_drv_requeue_rxd(smc,rxd,frag_count) ;
DB_RX("next RxD is %x ",queue->rx_curr_get,0,3) ;
NDD_TRACE("RHx2",queue->rx_curr_get,0,0) ;
}
rx_end:
#ifdef ALL_RX_COMPLETE
mac_drv_all_receives_complete(smc) ;
#endif
return ; /* lint bug: needs return detect end of function */
}
int ess_raf_received_pack(struct s_smc *smc, SMbuf *mb, struct smt_header *sm,
int fs)
{
void *p ;
struct smt_p_0016 *cmd ;
SMbuf *db ;
u_long msg_res_type ;
u_long payload, overhead ;
int local ;
int i ;
local = ((fs & L_INDICATOR) != 0) ;
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 ;
if (!(cmd = (struct smt_p_0016 *) sm_to_para(smc,sm,SMT_P0016))) {
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) ;
switch (cmd->sba_cmd) {
case REQUEST_ALLOCATION :
if (sm->smt_type == SMT_REQUEST) {
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;
}
}
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;
}
if (smt_check_para(smc,sm,plist_raf_alc_res)) {
DB_ESS("ESS: RAF with para problem, ignoring\n",0,0) ;
return fs;
}
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 Response not accepted\n",0,0) ;
return fs;
}
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) ;
(void)process_bw_alloc(smc,(long)payload,(long)overhead) ;
return fs;
case CHANGE_ALLOCATION :
if (sm->smt_type != SMT_REQUEST) {
DB_ESS("ESS: Do not process Change Responses\n",0,0) ;
return fs;
}
if (smt_check_para(smc,sm,plist_raf_chg_req)) {
DB_ESS("ESS: RAF with para problem, ignoring\n",0,0) ;
return fs;
}
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;
}
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) ;
if(!process_bw_alloc(smc,(long)payload,(long)overhead))
return fs;
ess_send_response(smc,sm,CHANGE_ALLOCATION) ;
return fs;
case REPORT_ALLOCATION :
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) ;
if (msg_res_type != SYNC_BW) {
DB_ESS("ESS: ignoring RAF with para problem\n",0,0) ;
return fs;
}
ess_send_response(smc,sm,REPORT_ALLOCATION) ;
return fs;
default:
DB_ESS("ESS: ignoring RAF with bad sba_cmd\n",0,0) ;
break ;
}
return fs;
}
void hwm_tx_frag(struct s_smc *smc, char far *virt, u_long phys, int len,
int frame_status)
{
struct s_smt_fp_txd volatile *t ;
struct s_smt_tx_queue *queue ;
__le32 tbctrl ;
queue = smc->os.hwm.tx_p ;
NDD_TRACE("THfB",virt,len,frame_status) ;
/* Bug fix: AF / May 31 1999 (#missing)
* snmpinfo problem reported by IBM is caused by invalid
* t-pointer (txd) if LAN_TX is not set but LOC_TX only.
* Set: t = queue->tx_curr_put here !
*/
t = queue->tx_curr_put ;
DB_TX("hwm_tx_frag: len = %d, frame_status = %x ",len,frame_status,2) ;
if (frame_status & LAN_TX) {
/* '*t' is already defined */
DB_TX("LAN_TX: TxD = %x, virt = %x ",t,virt,3) ;
t->txd_virt = virt ;
t->txd_txdscr = cpu_to_le32(smc->os.hwm.tx_descr) ;
t->txd_tbadr = cpu_to_le32(phys) ;
tbctrl = cpu_to_le32((((__u32)frame_status &
(FIRST_FRAG|LAST_FRAG|EN_IRQ_EOF))<< 26) |
BMU_OWN|BMU_CHECK |len) ;
t->txd_tbctrl = tbctrl ;
#ifndef AIX
DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
outpd(queue->tx_bmu_ctl,CSR_START) ;
#else /* ifndef AIX */
DRV_BUF_FLUSH(t,DDI_DMA_SYNC_FORDEV) ;
if (frame_status & QUEUE_A0) {
outpd(ADDR(B0_XA_CSR),CSR_START) ;
}
else {
outpd(ADDR(B0_XS_CSR),CSR_START) ;
}
#endif
queue->tx_free-- ;
queue->tx_used++ ;
queue->tx_curr_put = t->txd_next ;
if (frame_status & LAST_FRAG) {
smc->mib.m[MAC0].fddiMACTransmit_Ct++ ;
}
}
if (frame_status & LOC_TX) {
DB_TX("LOC_TX: ",0,0,3) ;
if (frame_status & FIRST_FRAG) {
if(!(smc->os.hwm.tx_mb = smt_get_mbuf(smc))) {
smc->hw.fp.err_stats.err_no_buf++ ;
DB_TX("No SMbuf; transmit terminated",0,0,4) ;
}
else {
smc->os.hwm.tx_data =
smtod(smc->os.hwm.tx_mb,char *) - 1 ;
#ifdef USE_OS_CPY
#ifdef PASS_1ST_TXD_2_TX_COMP
hwm_cpy_txd2mb(t,smc->os.hwm.tx_data,
smc->os.hwm.tx_len) ;
#endif
#endif
}
}
if (smc->os.hwm.tx_mb) {
#ifndef USE_OS_CPY
DB_TX("copy fragment into MBuf ",0,0,3) ;
memcpy(smc->os.hwm.tx_data,virt,len) ;
smc->os.hwm.tx_data += len ;
#endif
if (frame_status & LAST_FRAG) {
#ifdef USE_OS_CPY
#ifndef PASS_1ST_TXD_2_TX_COMP
/*
* hwm_cpy_txd2mb(txd,data,len) copies 'len'
* bytes from the virtual pointer in 'rxd'
* to 'data'. The virtual pointer of the
* os-specific tx-buffer should be written
* in the LAST txd.
*/
hwm_cpy_txd2mb(t,smc->os.hwm.tx_data,
smc->os.hwm.tx_len) ;
#endif /* nPASS_1ST_TXD_2_TX_COMP */
#endif /* USE_OS_CPY */
smc->os.hwm.tx_data =
smtod(smc->os.hwm.tx_mb,char *) - 1 ;
*(char *)smc->os.hwm.tx_mb->sm_data =
*smc->os.hwm.tx_data ;
smc->os.hwm.tx_data++ ;
smc->os.hwm.tx_mb->sm_len =
smc->os.hwm.tx_len - 1 ;
DB_TX("pass LLC frame to SMT ",0,0,3) ;
smt_received_pack(smc,smc->os.hwm.tx_mb,
RD_FS_LOCAL) ;
}
/*
* 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 Response 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;
}
