Update the WaveLAN/IEEE driver:

- Convert to new bus attachment scheme. Thanks to Blaz Zupan for doing
  the initial work here. One thing I changed was to have the attach
  and detach routines work like the PCI drivers, which means that in
  theory you should be able to load and unload the driver like the PCI
  NIC drivers, however the pccard support for this hasn't settled down
  yet so it doesn't quite work. Once the pccard work is done, I'll have
  to revisit this.

- Add device wi0 to PCCARD. If we're lucky, people should be able to
  install via their WaveLAN cards now.

- Add support for signal strength caching. The wicontrol utility has
  also been updated to allow zeroing and displaying the signal strength
  cache.

- Add a /sys/modules/wi directory and fix a Makefile to builf if_wi.ko.
  Currently this module is only built for the i386 platform, though once
  the pccard stuff is done it should be able to work on the alpha too.
  (Theoretically you should be able to plug one of the WaveLAN/IEEE ISA
  cards into an alpha with an ISA slot, but we'll see how that turns out.

- Update LINT to use only device wi0. There is no true ISA version of
  the WaveLAN/IEEE so we'll never use an ISA attachment.

- Update files.i386 so that if_wi is dependent on card.

3 files changed, 105 insertions, 2 deletions

diff --git a/usr.sbin/wicontrol/Makefile b/usr.sbin/wicontrol/Makefile
index 47ea6f8..f68ae34 100644
--- a/usr.sbin/wicontrol/Makefile
+++ b/usr.sbin/wicontrol/Makefile
@@ -2,7 +2,7 @@
 PROG=	wicontrol
 SRCS=	wicontrol.c
 
-CFLAGS+= -Wall
+CFLAGS+= -Wall -DWICACHE
 
 MAN8=	wicontrol.8
 
diff --git a/usr.sbin/wicontrol/wicontrol.8 b/usr.sbin/wicontrol/wicontrol.8
index ad7d03c..c0b363e 100644
--- a/usr.sbin/wicontrol/wicontrol.8
+++ b/usr.sbin/wicontrol/wicontrol.8
@@ -65,6 +65,10 @@
 .Fl i Ar iface Fl P Ar 0|1
 .Nm wicontrol
 .Fl i Ar iface Fl S Ar max_sleep_duration
+.Nm wicontrol
+.Fl i Ar iface Fl Z (zero signal cache)
+.Nm wicontrol
+.Fl i Ar iface Fl C (display signal cache)
 .Sh DESCRIPTION
 The
 .Nm
@@ -238,6 +242,19 @@ Specify the sleep interval to use when power management is enabled.
 The
 .Are max sleep interval
 is specified in milliseconds. The default is 100.
+.It Fl i Ar iface Fl Z
+Clear the signal strength cache maintained internally by the
+.Nm wi
+driver.
+.It Fl i Ar iface Fl C
+Display the cached signal strength information maintained by the
+.Nm wi
+driver. The driver retains information about signal strength and
+noise level for packets received from different hosts. The signal
+strength and noise level values are displayed in units of dBms.
+The signal quality values is produced by subtracting the noise level
+from the signal strength (i.e. less noise and better signal yields
+better signal quality).
 .El
 .Sh SEE ALSO
 .Xr wi 4 ,
diff --git a/usr.sbin/wicontrol/wicontrol.c b/usr.sbin/wicontrol/wicontrol.c
index bdb9e20..ef62368 100644
--- a/usr.sbin/wicontrol/wicontrol.c
+++ b/usr.sbin/wicontrol/wicontrol.c
@@ -431,10 +431,77 @@ static void usage(p)
 	fprintf(stderr, "\t%s -i iface -f frequency\n", p);
 	fprintf(stderr, "\t%s -i iface -P 0|1t\n", p);
 	fprintf(stderr, "\t%s -i iface -S max sleep duration\n", p);
+#ifdef WICACHE
+	fprintf(stderr, "\t%s -i iface -Z zero out signal cache\n", p);
+	fprintf(stderr, "\t%s -i iface -C print signal cache\n", p);
+#endif
 
 	exit(1);
 }
 
+#ifdef WICACHE
+static void wi_zerocache(iface)
+	char			*iface;
+{
+	struct wi_req		wreq;
+
+	if (iface == NULL)
+		errx(1, "must specify interface name");
+
+	bzero((char *)&wreq, sizeof(wreq));
+	wreq.wi_len = 0;
+	wreq.wi_type = WI_RID_ZERO_CACHE;
+
+	wi_getval(iface, &wreq);
+}
+
+static void wi_readcache(iface)
+	char			*iface;
+{
+	struct wi_req		wreq;
+	int 			*wi_sigitems;
+	struct wi_sigcache 	*sc;
+	char *			pt;
+	int 			i;
+
+	if (iface == NULL)
+		errx(1, "must specify interface name");
+
+	bzero((char *)&wreq, sizeof(wreq));
+	wreq.wi_len = WI_MAX_DATALEN;
+	wreq.wi_type = WI_RID_READ_CACHE;
+
+	wi_getval(iface, &wreq);
+
+	wi_sigitems = (int *) &wreq.wi_val; 
+	pt = ((char *) &wreq.wi_val);
+	pt += sizeof(int);
+	sc = (struct wi_sigcache *) pt;
+
+	for (i = 0; i < *wi_sigitems; i++) {
+		printf("[%d/%d]:", i+1, *wi_sigitems);
+		printf(" %02x:%02x:%02x:%02x:%02x:%02x,",
+		  		    	sc->macsrc[0]&0xff,
+		  		    	sc->macsrc[1]&0xff,
+		   		    	sc->macsrc[2]&0xff,
+		   			sc->macsrc[3]&0xff,
+		   			sc->macsrc[4]&0xff,
+		   			sc->macsrc[5]&0xff);
+        	printf(" %d.%d.%d.%d,",((sc->ipsrc >> 0) & 0xff),
+				        ((sc->ipsrc >> 8) & 0xff),
+				        ((sc->ipsrc >> 16) & 0xff),
+				        ((sc->ipsrc >> 24) & 0xff));
+		printf(" sig: %d, noise: %d, qual: %d\n",
+		   			sc->signal,
+		   			sc->noise,
+		   			sc->quality);
+		sc++;
+	}
+
+	return;
+}
+#endif
+
 int main(argc, argv)
 	int			argc;
 	char			*argv[];
@@ -444,8 +511,24 @@ int main(argc, argv)
 	char			*p = argv[0];
 
 	while((ch = getopt(argc, argv,
-	    "hoc:d:f:i:p:r:q:t:n:s:m:P:S:")) != -1) {
+	    "hoc:d:f:i:p:r:q:t:n:s:m:P:S:ZC")) != -1) {
 		switch(ch) {
+		case 'Z':
+#ifdef WICACHE
+			wi_zerocache(iface);
+			exit(0);
+#else
+			printf("WICACHE not available\n");
+#endif
+			break;
+		case 'C':
+#ifdef WICACHE
+			wi_readcache(iface);
+#else
+			printf("WICACHE not available\n");
+#endif
+			exit(0);
+			break;
 		case 'o':
 			wi_dumpstats(iface);
 			exit(0);
@@ -515,3 +598,6 @@ int main(argc, argv)
 
 	exit(0);
 }
+
+
+