Add support for the SIOCGIWRATE call.

CHANGES

@@ -41,6 +41,7 @@
 * Intersil Corporation as part of PRISM(R) chipset product development.
 *
 * --------------------------------------------------------------------
+  - Add support for the SIOCGIWRATE wireless extension.
 -pre2
   - Restructured the driver locking.  SMP should be MUCH better now.
   - Stripped out more dead code. (mainly FID_STACK)

THANKS

@@ -88,6 +88,7 @@ Tony Likhite <tony@likhite.net>
 David Everly <deckrider@yahoo.com>
 Nick Jafa <jafa@silicondust.com>
 James Goodwin <jamesg@Filanet.com>
+Derek Atkins <warlord@mit.edu>
 
 [Many, many more.  If I've overlooked you and you want to be listed here, 
 send me e-mail and I'll fix it.  I _know_ a bunch of linux-wlan contributors

src/prism2/driver/prism2wext.c

@@ -114,6 +114,37 @@ iw_stats* prism2wext_get_wireless_stats(struct net_device *dev)
 	return &wlandev->wstats;
 }
 
+static int prism2wext_getrate(hfa384x_t* hw, struct iw_param *rrq)
+{
+  UINT16 rate;
+  int err;
+
+  err = hfa384x_drvr_getconfig16 (hw, HFA384x_RID_CURRENTTXRATE, &rate);
+  if (err)
+    return err;
+	
+  rrq->fixed = 0;
+  rrq->disabled = 0;
+  rrq->value = 0;
+
+  switch (rate) {
+  case 0x0001:
+    rrq->value = 100000;
+    return 0;
+  case 0x0002:
+    rrq->value = 200000;
+    return 0;
+  case 0x0004:
+    rrq->value = 5500000;
+    return 0;
+  case 0x0008:
+    rrq->value = 11000000;
+    return 0;
+  default:
+    return (-EINVAL);
+  }
+}
+
 /* wireless extensions' ioctls */ 
 int prism2wext_support_ioctl(struct net_device *dev, struct iwreq *iwr, int cmd)
 {
@@ -237,7 +268,13 @@ int prism2wext_support_ioctl(struct net_device *dev, struct iwreq *iwr, int cmd)
 		break;
 
 	case SIOCSIWRATE: /* set default bit rate (bps) */	
+		err = (-EOPNOTSUPP);
+		break;
+
 	case SIOCGIWRATE: /* get default bit rate (bps) */	
+		err = prism2wext_getrate (hw, &iwr->u.bitrate);
+		break;
+
 	case SIOCSIWRTS:	
 	case SIOCGIWRTS:	
 	case SIOCSIWFRAG: