ref: c116550e6a41572796e4db65e4f6acbcb3d9d6f8
dir: /os/ipaq1110/etherwavelan.c/
/*
Lucent Wavelan IEEE 802.11 pcmcia.
There is almost no documentation for the card.
the driver is done using both the FreeBSD, Linux and
original Plan 9 drivers as `documentation'.
Has been used with the card plugged in during all up time.
no cards removals/insertions yet.
For known BUGS see the comments below. Besides,
the driver keeps interrupts disabled for just too
long. When it gets robust, locks should be revisited.
BUGS: check endian, alignment and mem/io issues;
multicast;
receive watchdog interrupts.
TODO: automatic power management;
improve locking.
*/
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "../port/error.h"
#include "../port/netif.h"
#include "etherif.h"
#define print iprint
#define DEBUG if(1)iprint
#define SEEKEYS 1
typedef struct Ctlr Ctlr;
typedef struct Wltv Wltv;
typedef struct WFrame WFrame;
typedef struct Stats Stats;
typedef struct WStats WStats;
typedef struct WKey WKey;
struct WStats
{
ulong ntxuframes; // unicast frames
ulong ntxmframes; // multicast frames
ulong ntxfrags; // fragments
ulong ntxubytes; // unicast bytes
ulong ntxmbytes; // multicast bytes
ulong ntxdeferred; // deferred transmits
ulong ntxsretries; // single retries
ulong ntxmultiretries; // multiple retries
ulong ntxretrylimit;
ulong ntxdiscards;
ulong nrxuframes; // unicast frames
ulong nrxmframes; // multicast frames
ulong nrxfrags; // fragments
ulong nrxubytes; // unicast bytes
ulong nrxmbytes; // multicast bytes
ulong nrxfcserr;
ulong nrxdropnobuf;
ulong nrxdropnosa;
ulong nrxcantdecrypt;
ulong nrxmsgfrag;
ulong nrxmsgbadfrag;
ulong end;
};
struct WFrame
{
ushort sts;
ushort rsvd0;
ushort rsvd1;
ushort qinfo;
ushort rsvd2;
ushort rsvd3;
ushort txctl;
ushort framectl;
ushort id;
uchar addr1[Eaddrlen];
uchar addr2[Eaddrlen];
uchar addr3[Eaddrlen];
ushort seqctl;
uchar addr4[Eaddrlen];
ushort dlen;
uchar dstaddr[Eaddrlen];
uchar srcaddr[Eaddrlen];
ushort len;
ushort dat[3];
ushort type;
};
// Lucent's Length-Type-Value records to talk to the wavelan.
// most operational parameters are read/set using this.
enum
{
WTyp_Stats = 0xf100,
WTyp_Ptype = 0xfc00,
WTyp_Mac = 0xfc01,
WTyp_WantName = 0xfc02,
WTyp_Chan = 0xfc03,
WTyp_NetName = 0xfc04,
WTyp_ApDens = 0xfc06,
WTyp_MaxLen = 0xfc07,
WTyp_PM = 0xfc09,
WTyp_PMWait = 0xfc0c,
WTyp_NodeName = 0xfc0e,
WTyp_Crypt = 0xfc20,
WTyp_XClear = 0xfc22,
WTyp_Tick = 0xfce0,
WTyp_RtsThres = 0xfc83,
WTyp_TxRate = 0xfc84,
WTx1Mbps = 0x0,
WTx2Mbps = 0x1,
WTxAuto = 0x3,
WTyp_Prom = 0xfc85,
WTyp_Keys = 0xfcb0,
WTyp_TxKey = 0xfcb1,
WTyp_StationID = 0xfd20,
WTyp_CurName = 0xfd41,
WTyp_BaseID = 0xfd42, // ID of the currently connected-to base station
WTyp_CurTxRate = 0xfd44, // Current TX rate
WTyp_HasCrypt = 0xfd4f,
};
// Controller
enum
{
WDfltIRQ = 3, // default irq
WDfltIOB = 0x180, // default IO base
WIOLen = 0x40, // Hermes IO length
WTmOut = 65536, // Cmd time out
WPTypePeerToPeer = 0,
WPTypeManaged = 1,
WPTypeWDS = 2,
WPTypeAdHoc = 3,
WDfltPType = WPTypeManaged,
WDfltApDens = 1,
WDfltRtsThres = 2347, // == disabled
WDfltTxRate = WTxAuto, // 2Mbps
WMaxLen = 2304,
WNameLen = 32,
WNKeys = 4,
WKeyLen = 14,
WMinKeyLen = 5,
// Wavelan hermes registers
WR_Cmd = 0x00,
WCmdIni = 0x0000,
WCmdEna = 0x0001,
WCmdDis = 0x0002,
WCmdTx = 0x000b,
WCmdMalloc = 0x000a,
WCmdAskStats = 0x0011,
WCmdMsk = 0x003f,
WCmdAccRd = 0x0021,
WCmdReclaim = 0x0100,
WCmdAccWr = 0x0121,
WCmdBusy = 0x8000,
WR_Parm0 = 0x02,
WR_Parm1 = 0x04,
WR_Parm2 = 0x06,
WR_Sts = 0x08,
WR_InfoId = 0x10,
WR_Sel0 = 0x18,
WR_Sel1 = 0x1a,
WR_Off0 = 0x1c,
WR_Off1 = 0x1e,
WBusyOff = 0x8000,
WErrOff = 0x4000,
WResSts = 0x7f00,
WR_RXId = 0x20,
WR_Alloc = 0x22,
WR_EvSts = 0x30,
WR_IntEna = 0x32,
WCmdEv = 0x0010,
WRXEv = 0x0001,
WTXEv = 0x0002,
WTxErrEv = 0x0004,
WAllocEv = 0x0008,
WInfoEv = 0x0080,
WIDropEv = 0x2000,
WTickEv = 0x8000,
WEvs = WRXEv|WTXEv|WAllocEv|WInfoEv|WIDropEv,
WR_EvAck = 0x34,
WR_Data0 = 0x36,
WR_Data1 = 0x38,
// Frame stuff
WF_Err = 0x0003,
WF_1042 = 0x2000,
WF_Tunnel = 0x4000,
WF_WMP = 0x6000,
WF_Data = 0x0008,
WSnapK1 = 0xaa,
WSnapK2 = 0x00,
WSnapCtlr = 0x03,
WSnap0 = (WSnapK1|(WSnapK1<<8)),
WSnap1 = (WSnapK2|(WSnapCtlr<<8)),
WSnapHdrLen = 6,
WF_802_11_Off = 0x44,
WF_802_3_Off = 0x2e,
};
#define csr_outs(ctlr,r,arg) outs((ctlr)->iob+(r),(arg))
#define csr_ins(ctlr,r) ins((ctlr)->iob+(r))
#define csr_ack(ctlr,ev) outs((ctlr)->iob+WR_EvAck,(ev))
struct WKey
{
ushort len;
char dat[WKeyLen];
};
struct Wltv
{
ushort len;
ushort type;
union
{
struct {
ushort val;
ushort pad;
};
struct {
uchar addr[8];
};
struct {
ushort slen;
char s[WNameLen];
};
struct {
char name[WNameLen];
};
struct {
WKey keys[WNKeys];
};
};
};
// What the driver thinks. Not what the card thinks.
struct Stats
{
ulong nints;
ulong nrx;
ulong ntx;
ulong ntxrq;
ulong nrxerr;
ulong ntxerr;
ulong nalloc; // allocation (reclaim) events
ulong ninfo;
ulong nidrop;
ulong nwatchdogs; // transmit time outs, actually
int ticks;
int tickintr;
int signal;
int noise;
};
struct Ctlr
{
Lock;
Rendez timer;
int attached;
int slot;
int iob;
int ptype;
int apdensity;
int rtsthres;
int txbusy;
int txrate;
int txdid;
int txmid;
int txtmout;
int maxlen;
int chan;
int pmena;
int pmwait;
char netname[WNameLen];
char wantname[WNameLen];
char nodename[WNameLen];
WFrame txf;
uchar txbuf[1536];
int hascrypt; // card has encryption
int crypt; // encryption off/on
int txkey; // transmit key
Wltv keys; // default keys
int xclear; // exclude clear packets off/on
Stats;
WStats;
};
// w_... routines do not ilock the Ctlr and should
// be called locked.
static void
w_intdis(Ctlr* ctlr)
{
csr_outs(ctlr, WR_IntEna, 0);
csr_ack(ctlr, 0xffff);
}
static void
w_intena(Ctlr* ctlr)
{
csr_outs(ctlr, WR_IntEna, WEvs);
}
static int
w_cmd(Ctlr *ctlr, ushort cmd, ushort arg)
{
int i, rc;
csr_outs(ctlr, WR_Parm0, arg);
csr_outs(ctlr, WR_Cmd, cmd);
for (i = 0; i<WTmOut; i++){
rc = csr_ins(ctlr, WR_EvSts);
if ( rc&WCmdEv ){
rc = csr_ins(ctlr, WR_Sts);
csr_ack(ctlr, WCmdEv);
if ((rc&WCmdMsk) != (cmd&WCmdMsk))
break;
if (rc&WResSts)
break;
return 0;
}
}
return -1;
}
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\n");
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;
}
static 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){
DEBUG("wavelan: type %x != code %x\n",ltv->type,code);
return -1;
}
if(ltv->len > 0)
inss((ctlr)->iob+(WR_Data1), <v->val, ltv->len-1);
return 0;
}
static void
w_outltv(Ctlr* ctlr, Wltv* ltv)
{
if(w_seek(ctlr,ltv->type, 0, 1))
return;
outss((ctlr)->iob+(WR_Data1), ltv, ltv->len+1);
w_cmd(ctlr, WCmdAccWr, ltv->type);
}
static void
ltv_outs(Ctlr* ctlr, int type, ushort val)
{
Wltv ltv;
ltv.len = 2;
ltv.type = type;
ltv.val = val;
w_outltv(ctlr, <v);
}
static int
ltv_ins(Ctlr* ctlr, int type)
{
Wltv ltv;
ltv.len = 2;
ltv.type = type;
ltv.val = 0;
if(w_inltv(ctlr, <v))
return -1;
return ltv.val;
}
static void
ltv_outstr(Ctlr* ctlr, int type, char* val)
{
Wltv ltv;
int len;
len = strlen(val);
if(len > sizeof(ltv.s))
len = sizeof(ltv.s);
memset(<v, 0, sizeof(ltv));
ltv.len = (sizeof(ltv.type)+sizeof(ltv.slen)+sizeof(ltv.s))/2;
ltv.type = type;
// This should be ltv.slen = len; according to Axel Belinfante
ltv.slen = len;
strncpy(ltv.s, val, len);
w_outltv(ctlr, <v);
}
static char Unkname[] = "who knows";
static char Nilname[] = "card does not tell";
static char*
ltv_inname(Ctlr* ctlr, int type)
{
static Wltv ltv;
int len;
memset(<v,0,sizeof(ltv));
ltv.len = WNameLen/2+2;
ltv.type = type;
if (w_inltv(ctlr, <v))
return Unkname;
len = ltv.slen;
if(len == 0 || ltv.s[0] == 0)
return Nilname;
if(len >= sizeof ltv.s)
len = sizeof ltv.s - 1;
ltv.s[len] = '\0';
return ltv.s;
}
static int
w_read(Ctlr* ctlr, int type, int off, void* buf, ulong len)
{
if (w_seek(ctlr, type, off, 1)){
DEBUG("wavelan: w_read: seek failed");
return 0;
}
inss((ctlr)->iob+(WR_Data1), buf, len/2);
return len;
}
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;
}
outss((ctlr)->iob+(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 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;
}
static int
w_enable(Ether* ether)
{
Wltv ltv;
Ctlr* ctlr = (Ctlr*) ether->ctlr;
if (!ctlr)
return -1;
w_intdis(ctlr);
w_cmd(ctlr, WCmdDis, 0);
w_intdis(ctlr);
if(w_cmd(ctlr, WCmdIni, 0))
return -1;
w_intdis(ctlr);
ltv_outs(ctlr, WTyp_Tick, 8);
ltv_outs(ctlr, WTyp_MaxLen, ctlr->maxlen);
ltv_outs(ctlr, WTyp_Ptype, ctlr->ptype);
ltv_outs(ctlr, WTyp_RtsThres, ctlr->rtsthres);
ltv_outs(ctlr, WTyp_TxRate, ctlr->txrate);
ltv_outs(ctlr, WTyp_ApDens, ctlr->apdensity);
ltv_outs(ctlr, WTyp_PMWait, ctlr->pmwait);
ltv_outs(ctlr, WTyp_PM, ctlr->pmena);
if (*ctlr->netname)
ltv_outstr(ctlr, WTyp_NetName, ctlr->netname);
if (*ctlr->wantname)
ltv_outstr(ctlr, WTyp_WantName, ctlr->wantname);
ltv_outs(ctlr, WTyp_Chan, ctlr->chan);
if (*ctlr->nodename)
ltv_outstr(ctlr, WTyp_NodeName, ctlr->nodename);
ltv.len = 4;
ltv.type = WTyp_Mac;
memmove(ltv.addr, ether->ea, Eaddrlen);
w_outltv(ctlr, <v);
ltv_outs(ctlr, WTyp_Prom, (ether->prom?1:0));
if (ctlr->hascrypt){
ltv_outs(ctlr, WTyp_Crypt, ctlr->crypt);
ltv_outs(ctlr, WTyp_TxKey, ctlr->txkey);
w_outltv(ctlr, &ctlr->keys);
ltv_outs(ctlr, WTyp_XClear, ctlr->xclear);
}
// BUG: set multicast addresses
if (w_cmd(ctlr, WCmdEna, 0)){
DEBUG("wavelan: Enable failed");
return -1;
}
ctlr->txdid = w_alloc(ctlr, 1518 + sizeof(WFrame) + 8);
ctlr->txmid = w_alloc(ctlr, 1518 + sizeof(WFrame) + 8);
if (ctlr->txdid == -1 || ctlr->txmid == -1)
DEBUG("wavelan: alloc failed");
ctlr->txbusy = 0;
w_intena(ctlr);
return 0;
}
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_txstart(Ether* ether)
{
Etherpkt *pkt;
Ctlr *ctlr;
Block *bp;
int len, off;
if((ctlr = ether->ctlr) == nil || ctlr->attached == 0 || ctlr->txbusy)
return;
if((bp = qget(ether->oq)) == nil)
return;
pkt = (Etherpkt*)bp->rp;
//
// If the packet header type field is > 1500 it is an IP or
// ARP datagram, otherwise it is an 802.3 packet. See RFC1042.
//
memset(&ctlr->txf, 0, sizeof(ctlr->txf));
if(((pkt->type[0]<<8)|pkt->type[1]) > 1500){
ctlr->txf.framectl = WF_Data;
memmove(ctlr->txf.addr1, pkt->d, Eaddrlen);
memmove(ctlr->txf.addr2, pkt->s, Eaddrlen);
memmove(ctlr->txf.dstaddr, pkt->d, Eaddrlen);
memmove(ctlr->txf.srcaddr, pkt->s, Eaddrlen);
memmove(&ctlr->txf.type, pkt->type, 2);
bp->rp += ETHERHDRSIZE;
len = BLEN(bp);
off = WF_802_11_Off;
ctlr->txf.dlen = len+ETHERHDRSIZE-WSnapHdrLen;
hnputs((uchar*)&ctlr->txf.dat[0], WSnap0);
hnputs((uchar*)&ctlr->txf.dat[1], WSnap1);
hnputs((uchar*)&ctlr->txf.len, len+ETHERHDRSIZE-WSnapHdrLen);
}
else{
len = BLEN(bp);
off = WF_802_3_Off;
ctlr->txf.dlen = len;
}
w_write(ctlr, ctlr->txdid, 0, &ctlr->txf, sizeof(ctlr->txf));
w_write(ctlr, ctlr->txdid, off, bp->rp, len+2);
if(w_cmd(ctlr, WCmdReclaim|WCmdTx, ctlr->txdid)){
DEBUG("wavelan: transmit failed\n");
ctlr->ntxerr++;
}
else{
ctlr->txbusy = 1;
ctlr->txtmout = 2;
}
freeb(bp);
}
static void
w_txdone(Ctlr* ctlr, int sts)
{
ctlr->txbusy = 0;
ctlr->txtmout = 0;
if (sts & WTxErrEv)
ctlr->ntxerr++;
else
ctlr->ntx++;
}
static int
w_stats(Ctlr* ctlr)
{
int i, rc, sp;
Wltv ltv;
ulong* p = (ulong*)&ctlr->WStats;
ulong* pend = (ulong*)&ctlr->end;
sp = csr_ins(ctlr, WR_InfoId);
ltv.len = ltv.type = 0;
w_read(ctlr, sp, 0, <v, 4);
if (ltv.type == WTyp_Stats){
ltv.len--;
for (i = 0; i < ltv.len && p < pend; i++){
rc = csr_ins(ctlr, WR_Data1);
if (rc > 0xf000)
rc = ~rc & 0xffff;
p[i] += rc;
}
return 0;
}
return -1;
}
static void
w_intr(Ether *ether)
{
int rc, txid;
Ctlr* ctlr = (Ctlr*) ether->ctlr;
if (ctlr->attached == 0){
csr_ack(ctlr, 0xffff);
csr_outs(ctlr, WR_IntEna, 0);
return;
}
csr_outs(ctlr, WR_IntEna, 0);
rc = csr_ins(ctlr, WR_EvSts);
csr_ack(ctlr, ~WEvs); // Not interested on 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_stats(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_intena(ctlr);
w_txstart(ether);
}
// Watcher to ensure that the card still works properly and
// to request WStats updates once a minute.
// BUG: it runs much more often, see the comment below.
static void
w_timer(void* arg)
{
Ether* ether = (Ether*) arg;
Ctlr* ctlr = (Ctlr*)ether->ctlr;
for(;;){
tsleep(&ctlr->timer, return0, 0, 50);
ctlr = (Ctlr*)ether->ctlr;
if (ctlr == 0)
break;
if (ctlr->attached == 0)
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, WCmdAskStats, WTyp_Stats);
}
iunlock(ctlr);
}
pexit("terminated",0);
}
static void
multicast(void*, uchar*, int)
{
// BUG: to be added.
}
static void
attach(Ether* ether)
{
Ctlr* ctlr;
char name[64];
int rc;
if (ether->ctlr == 0)
return;
snprint(name, sizeof(name), "#l%dtimer", ether->ctlrno);
ctlr = (Ctlr*) ether->ctlr;
if (ctlr->attached == 0){
ilock(ctlr);
rc = w_enable(ether);
iunlock(ctlr);
if(rc == 0){
ctlr->attached = 1;
kproc(name, w_timer, ether, 0);
} else
print("#l%d: enable failed\n",ether->ctlrno);
}
}
#define PRINTSTAT(fmt,val) l += snprint(p+l, READSTR-l, (fmt), (val))
#define PRINTSTR(fmt) l += snprint(p+l, READSTR-l, (fmt))
static long
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 = malloc(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("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->attached) ? "attached" : "not attached");
PRINTSTAT("Card %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 == 3)
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;
}
#undef PRINTSTR
#undef PRINTSTAT
static int
w_option(Ctlr* ctlr, char* buf, long n)
{
char *p;
int i, r;
WKey *key;
Cmdbuf *cb;
r = 0;
cb = parsecmd(buf, n);
if(cb->nf < 2)
r = -1;
else if(cistrcmp(cb->f[0], "essid") == 0){
if (cistrcmp(cb->f[1],"default") == 0)
p = "";
else
p = cb->f[1];
switch(ctlr->ptype){
case 0:
case 3:
memset(ctlr->netname, 0, sizeof(ctlr->netname));
strncpy(ctlr->netname, p, WNameLen);
if(ctlr->ptype == 3)
break;
/* fall through to set both for peer-to-peer */
default:
memset(ctlr->wantname, 0, sizeof(ctlr->wantname));
strncpy(ctlr->wantname, p, WNameLen);
break;
}
}
else if(cistrcmp(cb->f[0], "station") == 0){
memset(ctlr->nodename, 0, sizeof(ctlr->nodename));
strncpy(ctlr->nodename, cb->f[1], WNameLen);
}
else if(cistrcmp(cb->f[0], "channel") == 0){
if((i = atoi(cb->f[1])) >= 1 && i <= 16)
ctlr->chan = i;
else
r = -1;
}
else if(cistrcmp(cb->f[0], "mode") == 0){
if(cistrcmp(cb->f[1], "managed") == 0)
ctlr->ptype = WPTypeManaged;
else if(cistrcmp(cb->f[1], "wds") == 0)
ctlr->ptype = WPTypeWDS;
else if(cistrcmp(cb->f[1], "adhoc") == 0)
ctlr->ptype = WPTypeAdHoc;
else if(cistrcmp(cb->f[1], "peertopeer") == 0)
ctlr->ptype = WPTypePeerToPeer;
else if((i = atoi(cb->f[1])) >= 0 && i <= 3)
ctlr->ptype = i;
else
r = -1;
}
else if(cistrcmp(cb->f[0], "crypt") == 0){
if(cistrcmp(cb->f[1], "off") == 0)
ctlr->crypt = 0;
else if(cistrcmp(cb->f[1], "on") == 0 && ctlr->hascrypt)
ctlr->crypt = 1;
else
r = -1;
}
else if(cistrcmp(cb->f[0], "clear") == 0){
if(cistrcmp(cb->f[1], "on") == 0)
ctlr->xclear = 0;
else if(cistrcmp(cb->f[1], "off") == 0 && ctlr->hascrypt)
ctlr->xclear = 1;
else
r = -1;
}
else if(strncmp(cb->f[0], "key", 3) == 0){
if((i = atoi(cb->f[0]+3)) >= 1 && i <= WNKeys){
ctlr->txkey = i-1;
key = &ctlr->keys.keys[ctlr->txkey];
key->len = strlen(cb->f[1]);
if (key->len > WKeyLen)
key->len = WKeyLen;
memset(key->dat, 0, sizeof(key->dat));
memmove(key->dat, cb->f[1], key->len);
}
else
r = -1;
}
else if(cistrcmp(cb->f[0], "txkey") == 0){
if((i = atoi(cb->f[1])) >= 1 && i <= WNKeys)
ctlr->txkey = i-1;
else
r = -1;
}
else if(cistrcmp(cb->f[0], "pm") == 0){
if(cistrcmp(cb->f[1], "off") == 0)
ctlr->pmena = 0;
else if(cistrcmp(cb->f[1], "on") == 0){
ctlr->pmena = 1;
if(cb->nf == 3){
i = atoi(cb->f[2]);
// check range here? what are the units?
ctlr->pmwait = i;
}
}
else
r = -1;
}
else
r = -2;
free(cb);
return r;
}
static long
ctl(Ether* ether, void* buf, long n)
{
Ctlr *ctlr;
if((ctlr = ether->ctlr) == nil)
error(Enonexist);
if(ctlr->attached == 0)
error(Eshutdown);
ilock(ctlr);
if(w_option(ctlr, buf, n)){
iunlock(ctlr);
error(Ebadctl);
}
if(ctlr->txbusy)
w_txdone(ctlr, WTxErrEv);
w_enable(ether);
w_txstart(ether);
iunlock(ctlr);
return n;
}
static void
transmit(Ether* ether)
{
Ctlr* ctlr = ether->ctlr;
if (ctlr == 0)
return;
ilock(ctlr);
ctlr->ntxrq++;
w_txstart(ether);
iunlock(ctlr);
}
static void
promiscuous(void* arg, int on)
{
Ether* ether = (Ether*)arg;
Ctlr* ctlr = ether->ctlr;
if (ctlr == nil)
error("card not found");
if (ctlr->attached == 0)
error("card not attached");
ilock(ctlr);
ltv_outs(ctlr, WTyp_Prom, (on?1:0));
iunlock(ctlr);
}
static void
interrupt(Ureg* ,void* arg)
{
Ether* ether = (Ether*) arg;
Ctlr* ctlr = (Ctlr*) ether->ctlr;
if (ctlr == 0)
return;
ilock(ctlr);
ctlr->nints++;
w_intr(ether);
iunlock(ctlr);
}
static int
reset(Ether* ether)
{
int i;
Wltv ltv;
Ctlr* ctlr;
int slot;
char *p;
if ((slot = pcmspecial("WaveLAN/IEEE", ether))<0){
DEBUG("no wavelan found\n");
return -1;
}
if((ctlr = malloc(sizeof(Ctlr))) == nil)
return -1;
ilock(ctlr);
if (ether->port==0)
ether->port = WDfltIOB;
ctlr->iob = ether->port;
ctlr->slot = slot;
if (ioalloc(ether->port,WIOLen,0,"wavelan")<0){
print("#l%d: port 0x%lx in use\n",
ether->ctlrno, ether->port);
goto abort;
}
DEBUG("#l%d: port=0x%lx irq=%ld\n",
ether->ctlrno, ether->port, ether->irq);
w_intdis(ctlr);
if (w_cmd(ctlr,WCmdIni,0)){
print("#l%d: init failed\n", ether->ctlrno);
goto abort;
}
w_intdis(ctlr);
ltv_outs(ctlr, WTyp_Tick, 8);
ctlr->chan = 0;
ctlr->ptype = WDfltPType;
ctlr->txkey = 0;
ctlr->keys.len = sizeof(WKey)*WNKeys/2 + 1;
ctlr->keys.type = WTyp_Keys;
if(ctlr->hascrypt = ltv_ins(ctlr, WTyp_HasCrypt))
ctlr->crypt = 1;
*ctlr->netname = *ctlr->wantname = 0;
strcpy(ctlr->nodename, "Plan 9 STA");
for(i = 0; i < ether->nopt; i++){
//
// The max. length of an 'opt' is ISAOPTLEN in dat.h.
// It should be > 16 to give reasonable name lengths.
//
if(p = strchr(ether->opt[i], '='))
*p = ' ';
w_option(ctlr, ether->opt[i], strlen(ether->opt[i]));
}
ctlr->netname[WNameLen-1] = 0;
ctlr->wantname[WNameLen-1] = 0;
ctlr->nodename[WNameLen-1] =0;
ltv.type = WTyp_Mac;
ltv.len = 4;
if (w_inltv(ctlr, <v)){
print("#l%d: unable to read mac addr\n",
ether->ctlrno);
goto abort;
}
memmove(ether->ea, ltv.addr, Eaddrlen);
if (ctlr->chan == 0)
ctlr->chan = ltv_ins(ctlr, WTyp_Chan);
ctlr->apdensity = WDfltApDens;
ctlr->rtsthres = WDfltRtsThres;
ctlr->txrate = WDfltTxRate;
ctlr->maxlen = WMaxLen;
ctlr->pmena = 0;
ctlr->pmwait = 100;
ctlr->signal = 1;
ctlr->noise = 1;
// link to ether
ether->ctlr = ctlr;
ether->mbps = 10;
ether->attach = attach;
ether->interrupt = interrupt;
ether->transmit = transmit;
ether->ifstat = ifstat;
ether->ctl = ctl;
ether->promiscuous = promiscuous;
ether->multicast = multicast;
ether->arg = ether;
// DEBUG("#l%d: irq %ld port %lx type %s",
// ether->ctlrno, ether->irq, ether->port, ether->type);
// DEBUG(" %2.2uX%2.2uX%2.2uX%2.2uX%2.2uX%2.2uX\n",
// ether->ea[0], ether->ea[1], ether->ea[2],
// ether->ea[3], ether->ea[4], ether->ea[5]);
iunlock(ctlr);
return 0;
abort:
iunlock(ctlr);
free(ctlr);
ether->ctlr = nil;
iprint("wave reset failed\n");
return -1;
}
void
etherwavelanlink(void)
{
addethercard("wavelan", reset);
}