int
w_inltv(Ctlr* ctlr, Wltv* ltv)
{
int len;
ushort code;
if(w_cmd(ctlr, WCmdAccRd, ltv->type)){
DEBUG("wavelan: access read failed\n");
return -1;
}
if(w_seek(ctlr,ltv->type,0,1)){
DEBUG("wavelan: seek failed\n");
return -1;
}
len = csr_ins(ctlr, WR_Data1);
if(len > ltv->len)
return -1;
ltv->len = len;
if((code=csr_ins(ctlr, WR_Data1)) != ltv->type){
USED(code);
DEBUG("wavelan: type %x != code %x\n",ltv->type,code);
return -1;
}
if(ltv->len > 0)
csr_inss(ctlr, WR_Data1, <v->val, ltv->len-1);
return 0;
}
static int
w_write(Ctlr* ctlr, int type, int off, void* buf, ulong len)
{
int tries;
for (tries=0; tries < WTmOut; tries++) {
if(w_seek(ctlr, type, off, 0)) {
DEBUG("wavelan: w_write: seek failed\n");
return 0;
}
csr_outss(ctlr, WR_Data0, buf, len/2);
csr_outs(ctlr, WR_Data0, 0xdead);
csr_outs(ctlr, WR_Data0, 0xbeef);
if(w_seek(ctlr, type, off + len, 0)) {
DEBUG("wavelan: write seek failed\n");
return 0;
}
if(csr_ins(ctlr, WR_Data0) == 0xdead)
if(csr_ins(ctlr, WR_Data0) == 0xbeef)
return len;
DEBUG("wavelan: Hermes bug byte.\n");
return 0;
}
DEBUG("wavelan: tx timeout\n");
return 0;
}
static void
w_intr(Ether *ether)
{
int rc, txid;
Ctlr* ctlr = (Ctlr*) ether->ctlr;
if((ctlr->state & Power) == 0)
return;
if((ctlr->state & Attached) == 0){
csr_ack(ctlr, 0xffff);
csr_outs(ctlr, WR_IntEna, 0);
return;
}
rc = csr_ins(ctlr, WR_EvSts);
csr_ack(ctlr, ~WEvs); // Not interested in them
if(rc & WRXEv){
w_rxdone(ether);
csr_ack(ctlr, WRXEv);
}
if(rc & WTXEv){
w_txdone(ctlr, rc);
csr_ack(ctlr, WTXEv);
}
if(rc & WAllocEv){
ctlr->nalloc++;
txid = csr_ins(ctlr, WR_Alloc);
csr_ack(ctlr, WAllocEv);
if(txid == ctlr->txdid){
if((rc & WTXEv) == 0)
w_txdone(ctlr, rc);
}
}
if(rc & WInfoEv){
ctlr->ninfo++;
w_info(ether, ctlr);
csr_ack(ctlr, WInfoEv);
}
if(rc & WTxErrEv){
w_txdone(ctlr, rc);
csr_ack(ctlr, WTxErrEv);
}
if(rc & WIDropEv){
ctlr->nidrop++;
csr_ack(ctlr, WIDropEv);
}
w_txstart(ether);
}
static void
w_rxdone(Ether* ether)
{
Ctlr* ctlr = (Ctlr*) ether->ctlr;
int len, sp;
WFrame f;
Block* bp=0;
Etherpkt* ep;
sp = csr_ins(ctlr, WR_RXId);
len = w_read(ctlr, sp, 0, &f, sizeof(f));
if(len == 0){
DEBUG("wavelan: read frame error\n");
goto rxerror;
}
if(f.sts&WF_Err){
goto rxerror;
}
switch(f.sts){
case WF_1042:
case WF_Tunnel:
case WF_WMP:
len = f.dlen + WSnapHdrLen;
bp = iallocb(ETHERHDRSIZE + len + 2);
if(!bp)
goto rxerror;
ep = (Etherpkt*) bp->wp;
memmove(ep->d, f.addr1, Eaddrlen);
memmove(ep->s, f.addr2, Eaddrlen);
memmove(ep->type,&f.type,2);
bp->wp += ETHERHDRSIZE;
if(w_read(ctlr, sp, WF_802_11_Off, bp->wp, len+2) == 0){
DEBUG("wavelan: read 802.11 error\n");
goto rxerror;
}
bp->wp = bp->rp+(ETHERHDRSIZE+f.dlen);
break;
default:
len = ETHERHDRSIZE + f.dlen + 2;
bp = iallocb(len);
if(!bp)
goto rxerror;
if(w_read(ctlr, sp, WF_802_3_Off, bp->wp, len) == 0){
DEBUG("wavelan: read 800.3 error\n");
goto rxerror;
}
bp->wp += len;
}
ctlr->nrx++;
etheriq(ether,bp,1);
ctlr->signal = ((ctlr->signal*15)+((f.qinfo>>8) & 0xFF))/16;
ctlr->noise = ((ctlr->noise*15)+(f.qinfo & 0xFF))/16;
return;
rxerror:
freeb(bp);
ctlr->nrxerr++;
}
static void
w_timer(void* arg)
{
Ether* ether = (Ether*) arg;
Ctlr* ctlr = (Ctlr*)ether->ctlr;
ctlr->timerproc = up;
for(;;) {
tsleep(&up->sleep, return0, 0, MSperTick);
ctlr = (Ctlr*)ether->ctlr;
if(ctlr == 0)
break;
if((ctlr->state & (Attached|Power)) != (Attached|Power))
continue;
ctlr->ticks++;
ilock(ctlr);
// Seems that the card gets frames BUT does
// not send the interrupt; this is a problem because
// I suspect it runs out of receive buffers and
// stops receiving until a transmit watchdog
// reenables the card.
// The problem is serious because it leads to
// poor rtts.
// This can be seen clearly by commenting out
// the next if and doing a ping: it will stop
// receiving (although the icmp replies are being
// issued from the remote) after a few seconds.
// Of course this `bug' could be because I'm reading
// the card frames in the wrong way; due to the
// lack of documentation I cannot know.
if(csr_ins(ctlr, WR_EvSts)&WEvs) {
ctlr->tickintr++;
w_intr(ether);
}
if((ctlr->ticks % 10) == 0) {
if(ctlr->txtmout && --ctlr->txtmout == 0) {
ctlr->nwatchdogs++;
w_txdone(ctlr, WTxErrEv);
if(w_enable(ether)) {
DEBUG("wavelan: wdog enable failed\n");
}
w_txstart(ether);
}
if((ctlr->ticks % 120) == 0)
if(ctlr->txbusy == 0)
w_cmd(ctlr, WCmdEnquire, WTyp_Stats);
if(ctlr->scanticks > 0)
if((ctlr->ticks % ctlr->scanticks) == 0)
if(ctlr->txbusy == 0)
w_cmd(ctlr, WCmdEnquire, WTyp_Scan);
}
iunlock(ctlr);
}
pexit("terminated", 0);
}
static int
w_alloc(Ctlr* ctlr, int len)
{
int rc;
int i,j;
if(w_cmd(ctlr, WCmdMalloc, len)==0)
for (i = 0; i<WTmOut; i++)
if(csr_ins(ctlr, WR_EvSts) & WAllocEv){
csr_ack(ctlr, WAllocEv);
rc=csr_ins(ctlr, WR_Alloc);
if(w_seek(ctlr, rc, 0, 0))
return -1;
len = len/2;
for (j=0; j<len; j++)
csr_outs(ctlr, WR_Data0, 0);
return rc;
}
return -1;
}
/* save the stats info in the ctlr struct */
static void
w_stats(Ctlr* ctlr, int len)
{
int i, rc;
ulong* p = (ulong*)&ctlr->WStats;
ulong* pend = (ulong*)&ctlr->end;
for (i = 0; i < len && p < pend; i++){
rc = csr_ins(ctlr, WR_Data1);
if(rc > 0xf000)
rc = ~rc & 0xffff;
p[i] += rc;
}
}
/* send the base station scan info to any readers */
static void
w_scaninfo(Ether* ether, Ctlr *ctlr, int len)
{
int i, j;
Netfile **ep, *f, **fp;
Block *bp;
WScan *wsp;
ushort *scanbuf;
scanbuf = malloc(len*2);
if(scanbuf == nil)
return;
for (i = 0; i < len ; i++)
scanbuf[i] = csr_ins(ctlr, WR_Data1);
/* calculate number of samples */
len /= 25;
if(len == 0)
goto out;
i = ether->scan;
ep = ðer->f[Ntypes];
for(fp = ether->f; fp < ep && i > 0; fp++){
f = *fp;
if(f == nil || f->scan == 0)
continue;
bp = iallocb(100*len);
if(bp == nil)
break;
for(j = 0; j < len; j++){
wsp = (WScan*)(&scanbuf[j*25]);
if(wsp->ssid_len > 32)
wsp->ssid_len = 32;
bp->wp = (uchar*)seprint((char*)bp->wp, (char*)bp->lim,
"ssid=%.*s;bssid=%E;signal=%d;noise=%d;chan=%d%s\n",
wsp->ssid_len, wsp->ssid, wsp->bssid, wsp->signal,
wsp->noise, wsp->chan, (wsp->capinfo&(1<<4))?";wep":"");
}
qpass(f->in, bp);
i--;
}
out:
free(scanbuf);
}
static int
w_seek(Ctlr* ctlr, ushort id, ushort offset, int chan)
{
int i, rc;
static ushort sel[] = { WR_Sel0, WR_Sel1 };
static ushort off[] = { WR_Off0, WR_Off1 };
if(chan != 0 && chan != 1)
panic("wavelan: bad chan");
csr_outs(ctlr, sel[chan], id);
csr_outs(ctlr, off[chan], offset);
for (i=0; i<WTmOut; i++){
rc = csr_ins(ctlr, off[chan]);
if((rc & (WBusyOff|WErrOff)) == 0)
return 0;
}
return -1;
}
int
w_cmd(Ctlr *ctlr, ushort cmd, ushort arg)
{
int i, rc;
for(i=0; i<WTmOut; i++)
if((csr_ins(ctlr, WR_Cmd)&WCmdBusy) == 0)
break;
if(i==WTmOut){
print("#l%d: issuing cmd %.4ux: %.4ux\n", ctlr->ctlrno, cmd, csr_ins(ctlr, WR_Cmd));
return -1;
}
csr_outs(ctlr, WR_Parm0, arg);
csr_outs(ctlr, WR_Cmd, cmd);
for(i=0; i<WTmOut; i++)
if(csr_ins(ctlr, WR_EvSts)&WCmdEv)
break;
if(i==WTmOut){
/*
* WCmdIni can take a really long time.
*/
enum { IniTmOut = 2000 };
for(i=0; i<IniTmOut; i++){
if(csr_ins(ctlr, WR_EvSts)&WCmdEv)
break;
microdelay(100);
}
if(i < IniTmOut)
if(0) print("#l%d: long cmd %.4ux %d\n", ctlr->ctlrno, cmd, i);
if(i == IniTmOut){
print("#l%d: execing cmd %.4ux: %.4ux\n", ctlr->ctlrno, cmd, csr_ins(ctlr, WR_EvSts));
return -1;
}
}
rc = csr_ins(ctlr, WR_Sts);
csr_ack(ctlr, WCmdEv);
if((rc&WCmdMsk) != (cmd&WCmdMsk)){
print("#l%d: cmd %.4ux: status %.4ux\n", ctlr->ctlrno, cmd, rc);
return -1;
}
if(rc&WResSts){
/*
* Don't print; this happens on every WCmdAccWr for some reason.
*/
if(0) print("#l%d: cmd %.4ux: status %.4ux\n", ctlr->ctlrno, cmd, rc);
return -1;
}
return 0;
}
static int
w_info(Ether *ether, Ctlr* ctlr)
{
int sp;
Wltv ltv;
sp = csr_ins(ctlr, WR_InfoId);
ltv.len = ltv.type = 0;
w_read(ctlr, sp, 0, <v, 4);
ltv.len--;
switch(ltv.type){
case WTyp_Stats:
w_stats(ctlr, ltv.len);
return 0;
case WTyp_Scan:
w_scaninfo(ether, ctlr, ltv.len);
return 0;
}
return -1;
}
long
w_ifstat(Ether* ether, void* a, long n, ulong offset)
{
Ctlr *ctlr = (Ctlr*) ether->ctlr;
char *k, *p;
int i, l, txid;
ether->oerrs = ctlr->ntxerr;
ether->crcs = ctlr->nrxfcserr;
ether->frames = 0;
ether->buffs = ctlr->nrxdropnobuf;
ether->overflows = 0;
//
// Offset must be zero or there's a possibility the
// new data won't match the previous read.
//
if(n == 0 || offset != 0)
return 0;
p = smalloc(READSTR);
l = 0;
PRINTSTAT("Signal: %d\n", ctlr->signal-149);
PRINTSTAT("Noise: %d\n", ctlr->noise-149);
PRINTSTAT("SNR: %ud\n", ctlr->signal-ctlr->noise);
PRINTSTAT("Interrupts: %lud\n", ctlr->nints);
PRINTSTAT("Double Interrupts: %lud\n", ctlr->ndoubleint);
PRINTSTAT("TxPackets: %lud\n", ctlr->ntx);
PRINTSTAT("RxPackets: %lud\n", ctlr->nrx);
PRINTSTAT("TxErrors: %lud\n", ctlr->ntxerr);
PRINTSTAT("RxErrors: %lud\n", ctlr->nrxerr);
PRINTSTAT("TxRequests: %lud\n", ctlr->ntxrq);
PRINTSTAT("AllocEvs: %lud\n", ctlr->nalloc);
PRINTSTAT("InfoEvs: %lud\n", ctlr->ninfo);
PRINTSTAT("InfoDrop: %lud\n", ctlr->nidrop);
PRINTSTAT("WatchDogs: %lud\n", ctlr->nwatchdogs);
PRINTSTAT("Ticks: %ud\n", ctlr->ticks);
PRINTSTAT("TickIntr: %ud\n", ctlr->tickintr);
k = ((ctlr->state & Attached) ? "attached" : "not attached");
PRINTSTAT("Card %s", k);
k = ((ctlr->state & Power) ? "on" : "off");
PRINTSTAT(", power %s", k);
k = ((ctlr->txbusy)? ", txbusy" : "");
PRINTSTAT("%s\n", k);
if(ctlr->hascrypt){
PRINTSTR("Keys: ");
for (i = 0; i < WNKeys; i++){
if(ctlr->keys.keys[i].len == 0)
PRINTSTR("none ");
else if(SEEKEYS == 0)
PRINTSTR("set ");
else
PRINTSTAT("%s ", ctlr->keys.keys[i].dat);
}
PRINTSTR("\n");
}
// real card stats
ilock(ctlr);
PRINTSTR("\nCard stats: \n");
PRINTSTAT("Status: %ux\n", csr_ins(ctlr, WR_Sts));
PRINTSTAT("Event status: %ux\n", csr_ins(ctlr, WR_EvSts));
i = ltv_ins(ctlr, WTyp_Ptype);
PRINTSTAT("Port type: %d\n", i);
PRINTSTAT("Transmit rate: %d\n", ltv_ins(ctlr, WTyp_TxRate));
PRINTSTAT("Current Transmit rate: %d\n",
ltv_ins(ctlr, WTyp_CurTxRate));
PRINTSTAT("Channel: %d\n", ltv_ins(ctlr, WTyp_Chan));
PRINTSTAT("AP density: %d\n", ltv_ins(ctlr, WTyp_ApDens));
PRINTSTAT("Promiscuous mode: %d\n", ltv_ins(ctlr, WTyp_Prom));
if(i == WPTypeAdHoc)
PRINTSTAT("SSID name: %s\n", ltv_inname(ctlr, WTyp_NetName));
else {
Wltv ltv;
PRINTSTAT("Current name: %s\n", ltv_inname(ctlr, WTyp_CurName));
ltv.type = WTyp_BaseID;
ltv.len = 4;
if(w_inltv(ctlr, <v))
print("#l%d: unable to read base station mac addr\n", ether->ctlrno);
l += snprint(p+l, READSTR-l, "Base station: %2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
ltv.addr[0], ltv.addr[1], ltv.addr[2], ltv.addr[3], ltv.addr[4], ltv.addr[5]);
}
PRINTSTAT("Net name: %s\n", ltv_inname(ctlr, WTyp_WantName));
PRINTSTAT("Node name: %s\n", ltv_inname(ctlr, WTyp_NodeName));
if(ltv_ins(ctlr, WTyp_HasCrypt) == 0)
PRINTSTR("WEP: not supported\n");
else {
if(ltv_ins(ctlr, WTyp_Crypt) == 0)
PRINTSTR("WEP: disabled\n");
else{
PRINTSTR("WEP: enabled\n");
k = ((ctlr->xclear)? "excluded": "included");
PRINTSTAT("Clear packets: %s\n", k);
txid = ltv_ins(ctlr, WTyp_TxKey);
PRINTSTAT("Transmit key id: %d\n", txid);
}
}
iunlock(ctlr);
PRINTSTAT("ntxuframes: %lud\n", ctlr->ntxuframes);
PRINTSTAT("ntxmframes: %lud\n", ctlr->ntxmframes);
PRINTSTAT("ntxfrags: %lud\n", ctlr->ntxfrags);
PRINTSTAT("ntxubytes: %lud\n", ctlr->ntxubytes);
PRINTSTAT("ntxmbytes: %lud\n", ctlr->ntxmbytes);
PRINTSTAT("ntxdeferred: %lud\n", ctlr->ntxdeferred);
PRINTSTAT("ntxsretries: %lud\n", ctlr->ntxsretries);
PRINTSTAT("ntxmultiretries: %lud\n", ctlr->ntxmultiretries);
PRINTSTAT("ntxretrylimit: %lud\n", ctlr->ntxretrylimit);
PRINTSTAT("ntxdiscards: %lud\n", ctlr->ntxdiscards);
PRINTSTAT("nrxuframes: %lud\n", ctlr->nrxuframes);
PRINTSTAT("nrxmframes: %lud\n", ctlr->nrxmframes);
PRINTSTAT("nrxfrags: %lud\n", ctlr->nrxfrags);
PRINTSTAT("nrxubytes: %lud\n", ctlr->nrxubytes);
PRINTSTAT("nrxmbytes: %lud\n", ctlr->nrxmbytes);
PRINTSTAT("nrxfcserr: %lud\n", ctlr->nrxfcserr);
PRINTSTAT("nrxdropnobuf: %lud\n", ctlr->nrxdropnobuf);
PRINTSTAT("nrxdropnosa: %lud\n", ctlr->nrxdropnosa);
PRINTSTAT("nrxcantdecrypt: %lud\n", ctlr->nrxcantdecrypt);
PRINTSTAT("nrxmsgfrag: %lud\n", ctlr->nrxmsgfrag);
PRINTSTAT("nrxmsgbadfrag: %lud\n", ctlr->nrxmsgbadfrag);
USED(l);
n = readstr(offset, a, n, p);
free(p);
return n;
}