Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6

Documentation/networking/README.ipw2100

@@ -3,18 +3,18 @@ Intel(R) PRO/Wireless 2100 Driver for Linux in support of:
 
 Intel(R) PRO/Wireless 2100 Network Connection
 
-Copyright (C) 2003-2005, Intel Corporation
+Copyright (C) 2003-2006, Intel Corporation
 
 README.ipw2100
 
-Version: 1.1.3
-Date   : October 17, 2005
+Version: git-1.1.5
+Date   : January 25, 2006
 
 Index
 -----------------------------------------------
 0. IMPORTANT INFORMATION BEFORE USING THIS DRIVER
 1. Introduction
-2. Release 1.1.3 Current Features
+2. Release git-1.1.5 Current Features
 3. Command Line Parameters
 4. Sysfs Helper Files
 5. Radio Kill Switch
@@ -89,7 +89,7 @@ potential fixes and patches, as well as links to the development mailing list
 for the driver project.
 
 
-2. Release 1.1.3 Current Supported Features
+2. Release git-1.1.5 Current Supported Features
 -----------------------------------------------
 - Managed (BSS) and Ad-Hoc (IBSS)
 - WEP (shared key and open)
@@ -270,7 +270,7 @@ For installation support on the ipw2100 1.1.0 driver on Linux kernels
 9. License
 -----------------------------------------------
 
-  Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved.
+  Copyright(c) 2003 - 2006 Intel Corporation. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify it 
   under the terms of the GNU General Public License (version 2) as 

Documentation/networking/README.ipw2200

@@ -10,7 +10,7 @@ both hardware adapters listed above. In this document the Intel(R)
 PRO/Wireless 2915ABG Driver for Linux will be used to reference the
 unified driver.
 
-Copyright (C) 2004-2005, Intel Corporation
+Copyright (C) 2004-2006, Intel Corporation
 
 README.ipw2200
 
@@ -26,9 +26,11 @@ Index
 1.2. Module parameters
 1.3. Wireless Extension Private Methods
 1.4. Sysfs Helper Files
+1.5. Supported channels
 2.   Ad-Hoc Networking
 3.   Interacting with Wireless Tools
 3.1. iwconfig mode
+3.2. iwconfig sens
 4.   About the Version Numbers
 5.   Firmware installation
 6.   Support
@@ -314,6 +316,35 @@ For the device level files, see /sys/bus/pci/drivers/ipw2200:
 	running ifconfig and is therefore disabled by default.
 
 
+1.5. Supported channels
+-----------------------------------------------
+
+Upon loading the Intel(R) PRO/Wireless 2915ABG Driver for Linux, a
+message stating the detected geography code and the number of 802.11
+channels supported by the card will be displayed in the log.
+
+The geography code corresponds to a regulatory domain as shown in the
+table below.
+
+					  Supported channels
+Code	Geography			802.11bg	802.11a
+
+---	Restricted			11 	 	 0
+ZZF	Custom US/Canada		11	 	 8
+ZZD	Rest of World			13	 	 0
+ZZA	Custom USA & Europe & High	11		13
+ZZB	Custom NA & Europe    		11		13
+ZZC	Custom Japan			11	 	 4
+ZZM	Custom 				11	 	 0
+ZZE	Europe				13		19
+ZZJ	Custom Japan			14	 	 4
+ZZR	Rest of World			14	 	 0
+ZZH	High Band			13	 	 4
+ZZG	Custom Europe			13	 	 4
+ZZK	Europe 				13		24
+ZZL	Europe				11		13
+
+
 2.   Ad-Hoc Networking
 -----------------------------------------------
 
@@ -353,6 +384,15 @@ When configuring the mode of the adapter, all run-time configured parameters
 are reset to the value used when the module was loaded.  This includes
 channels, rates, ESSID, etc.
 
+3.2 iwconfig sens
+-----------------------------------------------
+
+The 'iwconfig ethX sens XX' command will not set the signal sensitivity
+threshold, as described in iwconfig documentation, but rather the number
+of consecutive missed beacons that will trigger handover, i.e. roaming
+to another access point. At the same time, it will set the disassociation
+threshold to 3 times the given value.
+
 
 4.   About the Version Numbers
 -----------------------------------------------
@@ -408,7 +448,7 @@ For general information and support, go to:
 7.  License
 -----------------------------------------------
 
-  Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved.
+  Copyright(c) 2003 - 2006 Intel Corporation. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify it 
   under the terms of the GNU General Public License version 2 as 

drivers/net/wireless/ipw2100.c

 /******************************************************************************
 
-  Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved.
+  Copyright(c) 2003 - 2006 Intel Corporation. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify it
   under the terms of version 2 of the GNU General Public License as
@@ -167,12 +167,12 @@ that only one external action is invoked at a time.
 
 #include "ipw2100.h"
 
-#define IPW2100_VERSION "git-1.1.4"
+#define IPW2100_VERSION "git-1.2.2"
 
 #define DRV_NAME	"ipw2100"
 #define DRV_VERSION	IPW2100_VERSION
 #define DRV_DESCRIPTION	"Intel(R) PRO/Wireless 2100 Network Driver"
-#define DRV_COPYRIGHT	"Copyright(c) 2003-2005 Intel Corporation"
+#define DRV_COPYRIGHT	"Copyright(c) 2003-2006 Intel Corporation"
 
 /* Debugging stuff */
 #ifdef CONFIG_IPW2100_DEBUG
@@ -1418,7 +1418,7 @@ static int ipw2100_enable_adapter(struct ipw2100_priv *priv)
 	if (priv->status & STATUS_ENABLED)
 		return 0;
 
-	down(&priv->adapter_sem);
+	mutex_lock(&priv->adapter_mutex);
 
 	if (rf_kill_active(priv)) {
 		IPW_DEBUG_HC("Command aborted due to RF kill active.\n");
@@ -1444,7 +1444,7 @@ static int ipw2100_enable_adapter(struct ipw2100_priv *priv)
 	}
 
       fail_up:
-	up(&priv->adapter_sem);
+	mutex_unlock(&priv->adapter_mutex);
 	return err;
 }
 
@@ -1576,7 +1576,7 @@ static int ipw2100_disable_adapter(struct ipw2100_priv *priv)
 		cancel_delayed_work(&priv->hang_check);
 	}
 
-	down(&priv->adapter_sem);
+	mutex_lock(&priv->adapter_mutex);
 
 	err = ipw2100_hw_send_command(priv, &cmd);
 	if (err) {
@@ -1595,7 +1595,7 @@ static int ipw2100_disable_adapter(struct ipw2100_priv *priv)
 	IPW_DEBUG_INFO("TODO: implement scan state machine\n");
 
       fail_up:
-	up(&priv->adapter_sem);
+	mutex_unlock(&priv->adapter_mutex);
 	return err;
 }
 
@@ -1888,7 +1888,7 @@ static void ipw2100_reset_adapter(struct ipw2100_priv *priv)
 	priv->status |= STATUS_RESET_PENDING;
 	spin_unlock_irqrestore(&priv->low_lock, flags);
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	/* stop timed checks so that they don't interfere with reset */
 	priv->stop_hang_check = 1;
 	cancel_delayed_work(&priv->hang_check);
@@ -1898,7 +1898,7 @@ static void ipw2100_reset_adapter(struct ipw2100_priv *priv)
 		wireless_send_event(priv->net_dev, SIOCGIWAP, &wrqu, NULL);
 
 	ipw2100_up(priv, 0);
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 
 }
 
@@ -2390,15 +2390,6 @@ static void isr_rx(struct ipw2100_priv *priv, int i,
 		IPW_DEBUG_DROP("Dropping packet while interface is not up.\n");
 		return;
 	}
-#ifdef CONFIG_IPW2100_MONITOR
-	if (unlikely(priv->ieee->iw_mode == IW_MODE_MONITOR &&
-		     priv->config & CFG_CRC_CHECK &&
-		     status->flags & IPW_STATUS_FLAG_CRC_ERROR)) {
-		IPW_DEBUG_RX("CRC error in packet.  Dropping.\n");
-		priv->ieee->stats.rx_errors++;
-		return;
-	}
-#endif
 
 	if (unlikely(priv->ieee->iw_mode != IW_MODE_MONITOR &&
 		     !(priv->status & STATUS_ASSOCIATED))) {
@@ -2446,6 +2437,89 @@ static void isr_rx(struct ipw2100_priv *priv, int i,
 	priv->rx_queue.drv[i].host_addr = packet->dma_addr;
 }
 
+#ifdef CONFIG_IPW2100_MONITOR
+
+static void isr_rx_monitor(struct ipw2100_priv *priv, int i,
+		   struct ieee80211_rx_stats *stats)
+{
+	struct ipw2100_status *status = &priv->status_queue.drv[i];
+	struct ipw2100_rx_packet *packet = &priv->rx_buffers[i];
+
+	/* Magic struct that slots into the radiotap header -- no reason
+	 * to build this manually element by element, we can write it much
+	 * more efficiently than we can parse it. ORDER MATTERS HERE */
+	struct ipw_rt_hdr {
+		struct ieee80211_radiotap_header rt_hdr;
+		s8 rt_dbmsignal; /* signal in dbM, kluged to signed */
+	} *ipw_rt;
+
+	IPW_DEBUG_RX("Handler...\n");
+
+	if (unlikely(status->frame_size > skb_tailroom(packet->skb) -
+				sizeof(struct ipw_rt_hdr))) {
+		IPW_DEBUG_INFO("%s: frame_size (%u) > skb_tailroom (%u)!"
+			       "  Dropping.\n",
+			       priv->net_dev->name,
+			       status->frame_size,
+			       skb_tailroom(packet->skb));
+		priv->ieee->stats.rx_errors++;
+		return;
+	}
+
+	if (unlikely(!netif_running(priv->net_dev))) {
+		priv->ieee->stats.rx_errors++;
+		priv->wstats.discard.misc++;
+		IPW_DEBUG_DROP("Dropping packet while interface is not up.\n");
+		return;
+	}
+
+	if (unlikely(priv->config & CFG_CRC_CHECK &&
+		     status->flags & IPW_STATUS_FLAG_CRC_ERROR)) {
+		IPW_DEBUG_RX("CRC error in packet.  Dropping.\n");
+		priv->ieee->stats.rx_errors++;
+		return;
+	}
+
+	pci_unmap_single(priv->pci_dev, packet->dma_addr,
+			 sizeof(struct ipw2100_rx), PCI_DMA_FROMDEVICE);
+	memmove(packet->skb->data + sizeof(struct ipw_rt_hdr),
+		packet->skb->data, status->frame_size);
+
+	ipw_rt = (struct ipw_rt_hdr *) packet->skb->data;
+
+	ipw_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
+	ipw_rt->rt_hdr.it_pad = 0; /* always good to zero */
+	ipw_rt->rt_hdr.it_len = sizeof(struct ipw_rt_hdr); /* total hdr+data */
+
+	ipw_rt->rt_hdr.it_present = 1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL;
+
+	ipw_rt->rt_dbmsignal = status->rssi + IPW2100_RSSI_TO_DBM;
+
+	skb_put(packet->skb, status->frame_size + sizeof(struct ipw_rt_hdr));
+
+	if (!ieee80211_rx(priv->ieee, packet->skb, stats)) {
+		priv->ieee->stats.rx_errors++;
+
+		/* ieee80211_rx failed, so it didn't free the SKB */
+		dev_kfree_skb_any(packet->skb);
+		packet->skb = NULL;
+	}
+
+	/* We need to allocate a new SKB and attach it to the RDB. */
+	if (unlikely(ipw2100_alloc_skb(priv, packet))) {
+		IPW_DEBUG_WARNING(
+			"%s: Unable to allocate SKB onto RBD ring - disabling "
+			"adapter.\n", priv->net_dev->name);
+		/* TODO: schedule adapter shutdown */
+		IPW_DEBUG_INFO("TODO: Shutdown adapter...\n");
+	}
+
+	/* Update the RDB entry */
+	priv->rx_queue.drv[i].host_addr = packet->dma_addr;
+}
+
+#endif
+
 static int ipw2100_corruption_check(struct ipw2100_priv *priv, int i)
 {
 	struct ipw2100_status *status = &priv->status_queue.drv[i];
@@ -2577,7 +2651,7 @@ static void __ipw2100_rx_process(struct ipw2100_priv *priv)
 		case P8023_DATA_VAL:
 #ifdef CONFIG_IPW2100_MONITOR
 			if (priv->ieee->iw_mode == IW_MODE_MONITOR) {
-				isr_rx(priv, i, &stats);
+				isr_rx_monitor(priv, i, &stats);
 				break;
 			}
 #endif
@@ -3882,7 +3956,7 @@ static int ipw2100_switch_mode(struct ipw2100_priv *priv, u32 mode)
 #ifdef CONFIG_IPW2100_MONITOR
 	case IW_MODE_MONITOR:
 		priv->last_mode = priv->ieee->iw_mode;
-		priv->net_dev->type = ARPHRD_IEEE80211;
+		priv->net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
 		break;
 #endif				/* CONFIG_IPW2100_MONITOR */
 	}
@@ -4138,7 +4212,7 @@ static int ipw_radio_kill_sw(struct ipw2100_priv *priv, int disable_radio)
 	IPW_DEBUG_RF_KILL("Manual SW RF Kill set to: RADIO  %s\n",
 			  disable_radio ? "OFF" : "ON");
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 
 	if (disable_radio) {
 		priv->status |= STATUS_RF_KILL_SW;
@@ -4156,7 +4230,7 @@ static int ipw_radio_kill_sw(struct ipw2100_priv *priv, int disable_radio)
 			schedule_reset(priv);
 	}
 
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return 1;
 }
 
@@ -5460,7 +5534,7 @@ static void shim__set_security(struct net_device *dev,
 	struct ipw2100_priv *priv = ieee80211_priv(dev);
 	int i, force_update = 0;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED))
 		goto done;
 
@@ -5533,7 +5607,7 @@ static void shim__set_security(struct net_device *dev,
 	if (!(priv->status & (STATUS_ASSOCIATED | STATUS_ASSOCIATING)))
 		ipw2100_configure_security(priv, 0);
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 }
 
 static int ipw2100_adapter_setup(struct ipw2100_priv *priv)
@@ -5657,7 +5731,7 @@ static int ipw2100_set_address(struct net_device *dev, void *p)
 	if (!is_valid_ether_addr(addr->sa_data))
 		return -EADDRNOTAVAIL;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 
 	priv->config |= CFG_CUSTOM_MAC;
 	memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
@@ -5667,12 +5741,12 @@ static int ipw2100_set_address(struct net_device *dev, void *p)
 		goto done;
 
 	priv->reset_backoff = 0;
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	ipw2100_reset_adapter(priv);
 	return 0;
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -6015,8 +6089,8 @@ static struct net_device *ipw2100_alloc_device(struct pci_dev *pci_dev,
 	strcpy(priv->nick, "ipw2100");
 
 	spin_lock_init(&priv->low_lock);
-	sema_init(&priv->action_sem, 1);
-	sema_init(&priv->adapter_sem, 1);
+	mutex_init(&priv->action_mutex);
+	mutex_init(&priv->adapter_mutex);
 
 	init_waitqueue_head(&priv->wait_command_queue);
 
@@ -6181,7 +6255,7 @@ static int ipw2100_pci_init_one(struct pci_dev *pci_dev,
 	 * member to call a function that then just turns and calls ipw2100_up.
 	 * net_dev->init is called after name allocation but before the
 	 * notifier chain is called */
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	err = register_netdev(dev);
 	if (err) {
 		printk(KERN_WARNING DRV_NAME
@@ -6217,12 +6291,12 @@ static int ipw2100_pci_init_one(struct pci_dev *pci_dev,
 
 	priv->status |= STATUS_INITIALIZED;
 
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 
 	return 0;
 
       fail_unlock:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 
       fail:
 	if (dev) {
@@ -6262,7 +6336,7 @@ static void __devexit ipw2100_pci_remove_one(struct pci_dev *pci_dev)
 	struct net_device *dev;
 
 	if (priv) {
-		down(&priv->action_sem);
+		mutex_lock(&priv->action_mutex);
 
 		priv->status &= ~STATUS_INITIALIZED;
 
@@ -6277,9 +6351,9 @@ static void __devexit ipw2100_pci_remove_one(struct pci_dev *pci_dev)
 		/* Take down the hardware */
 		ipw2100_down(priv);
 
-		/* Release the semaphore so that the network subsystem can
+		/* Release the mutex so that the network subsystem can
 		 * complete any needed calls into the driver... */
-		up(&priv->action_sem);
+		mutex_unlock(&priv->action_mutex);
 
 		/* Unregister the device first - this results in close()
 		 * being called if the device is open.  If we free storage
@@ -6318,7 +6392,7 @@ static int ipw2100_suspend(struct pci_dev *pci_dev, pm_message_t state)
 
 	IPW_DEBUG_INFO("%s: Going into suspend...\n", dev->name);
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (priv->status & STATUS_INITIALIZED) {
 		/* Take down the device; powers it off, etc. */
 		ipw2100_down(priv);
@@ -6331,7 +6405,7 @@ static int ipw2100_suspend(struct pci_dev *pci_dev, pm_message_t state)
 	pci_disable_device(pci_dev);
 	pci_set_power_state(pci_dev, PCI_D3hot);
 
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 
 	return 0;
 }
@@ -6345,7 +6419,7 @@ static int ipw2100_resume(struct pci_dev *pci_dev)
 	if (IPW2100_PM_DISABLED)
 		return 0;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 
 	IPW_DEBUG_INFO("%s: Coming out of suspend...\n", dev->name);
 
@@ -6371,7 +6445,7 @@ static int ipw2100_resume(struct pci_dev *pci_dev)
 	if (!(priv->status & STATUS_RF_KILL_SW))
 		ipw2100_up(priv, 0);
 
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 
 	return 0;
 }
@@ -6535,7 +6609,7 @@ static int ipw2100_wx_set_freq(struct net_device *dev,
 	if (priv->ieee->iw_mode == IW_MODE_INFRA)
 		return -EOPNOTSUPP;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -6566,7 +6640,7 @@ static int ipw2100_wx_set_freq(struct net_device *dev,
 	}
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -6607,7 +6681,7 @@ static int ipw2100_wx_set_mode(struct net_device *dev,
 	if (wrqu->mode == priv->ieee->iw_mode)
 		return 0;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -6630,7 +6704,7 @@ static int ipw2100_wx_set_mode(struct net_device *dev,
 	}
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -6812,7 +6886,7 @@ static int ipw2100_wx_set_wap(struct net_device *dev,
 	if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
 		return -EINVAL;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -6841,7 +6915,7 @@ static int ipw2100_wx_set_wap(struct net_device *dev,
 		     wrqu->ap_addr.sa_data[5] & 0xff);
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -6877,7 +6951,7 @@ static int ipw2100_wx_set_essid(struct net_device *dev,
 	int length = 0;
 	int err = 0;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -6914,7 +6988,7 @@ static int ipw2100_wx_set_essid(struct net_device *dev,
 	err = ipw2100_set_essid(priv, essid, length, 0);
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -6995,7 +7069,7 @@ static int ipw2100_wx_set_rate(struct net_device *dev,
 	u32 rate;
 	int err = 0;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7022,7 +7096,7 @@ static int ipw2100_wx_set_rate(struct net_device *dev,
 
 	IPW_DEBUG_WX("SET Rate -> %04X \n", rate);
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -7042,7 +7116,7 @@ static int ipw2100_wx_get_rate(struct net_device *dev,
 		return 0;
 	}
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7074,7 +7148,7 @@ static int ipw2100_wx_get_rate(struct net_device *dev,
 	IPW_DEBUG_WX("GET Rate -> %d \n", wrqu->bitrate.value);
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -7089,7 +7163,7 @@ static int ipw2100_wx_set_rts(struct net_device *dev,
 	if (wrqu->rts.fixed == 0)
 		return -EINVAL;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7109,7 +7183,7 @@ static int ipw2100_wx_set_rts(struct net_device *dev,
 
 	IPW_DEBUG_WX("SET RTS Threshold -> 0x%08X \n", value);
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -7160,7 +7234,7 @@ static int ipw2100_wx_set_txpow(struct net_device *dev,
 		value = wrqu->txpower.value;
 	}
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7171,7 +7245,7 @@ static int ipw2100_wx_set_txpow(struct net_device *dev,
 	IPW_DEBUG_WX("SET TX Power -> %d \n", value);
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -7263,7 +7337,7 @@ static int ipw2100_wx_set_retry(struct net_device *dev,
 	if (!(wrqu->retry.flags & IW_RETRY_LIMIT))
 		return 0;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7290,7 +7364,7 @@ static int ipw2100_wx_set_retry(struct net_device *dev,
 	IPW_DEBUG_WX("SET Both Retry Limits -> %d \n", wrqu->retry.value);
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -7333,7 +7407,7 @@ static int ipw2100_wx_set_scan(struct net_device *dev,
 	struct ipw2100_priv *priv = ieee80211_priv(dev);
 	int err = 0;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7348,7 +7422,7 @@ static int ipw2100_wx_set_scan(struct net_device *dev,
 	}
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -7398,7 +7472,7 @@ static int ipw2100_wx_set_power(struct net_device *dev,
 	struct ipw2100_priv *priv = ieee80211_priv(dev);
 	int err = 0;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7431,7 +7505,7 @@ static int ipw2100_wx_set_power(struct net_device *dev,
 	IPW_DEBUG_WX("SET Power Management Mode -> 0x%02X\n", priv->power_mode);
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 
 }
@@ -7735,7 +7809,7 @@ static int ipw2100_wx_set_promisc(struct net_device *dev,
 	int enable = (parms[0] > 0);
 	int err = 0;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7753,7 +7827,7 @@ static int ipw2100_wx_set_promisc(struct net_device *dev,
 			err = ipw2100_switch_mode(priv, priv->last_mode);
 	}
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -7776,7 +7850,7 @@ static int ipw2100_wx_set_powermode(struct net_device *dev,
 	struct ipw2100_priv *priv = ieee80211_priv(dev);
 	int err = 0, mode = *(int *)extra;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7788,7 +7862,7 @@ static int ipw2100_wx_set_powermode(struct net_device *dev,
 	if (priv->power_mode != mode)
 		err = ipw2100_set_power_mode(priv, mode);
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -7840,7 +7914,7 @@ static int ipw2100_wx_set_preamble(struct net_device *dev,
 	struct ipw2100_priv *priv = ieee80211_priv(dev);
 	int err, mode = *(int *)extra;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7858,7 +7932,7 @@ static int ipw2100_wx_set_preamble(struct net_device *dev,
 	err = ipw2100_system_config(priv, 0);
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -7888,7 +7962,7 @@ static int ipw2100_wx_set_crc_check(struct net_device *dev,
 	struct ipw2100_priv *priv = ieee80211_priv(dev);
 	int err, mode = *(int *)extra;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 	if (!(priv->status & STATUS_INITIALIZED)) {
 		err = -EIO;
 		goto done;
@@ -7905,7 +7979,7 @@ static int ipw2100_wx_set_crc_check(struct net_device *dev,
 	err = 0;
 
       done:
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 	return err;
 }
 
@@ -8210,11 +8284,11 @@ static void ipw2100_wx_event_work(struct ipw2100_priv *priv)
 	if (priv->status & STATUS_STOPPING)
 		return;
 
-	down(&priv->action_sem);
+	mutex_lock(&priv->action_mutex);
 
 	IPW_DEBUG_WX("enter\n");
 
-	up(&priv->action_sem);
+	mutex_unlock(&priv->action_mutex);
 
 	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
 
@@ -8237,7 +8311,7 @@ static void ipw2100_wx_event_work(struct ipw2100_priv *priv)
 
 	if (!(priv->status & STATUS_ASSOCIATED)) {
 		IPW_DEBUG_WX("Configuring ESSID\n");
-		down(&priv->action_sem);
+		mutex_lock(&priv->action_mutex);
 		/* This is a disassociation event, so kick the firmware to
 		 * look for another AP */
 		if (priv->config & CFG_STATIC_ESSID)
@@ -8245,7 +8319,7 @@ static void ipw2100_wx_event_work(struct ipw2100_priv *priv)
 					  0);
 		else
 			ipw2100_set_essid(priv, NULL, 0, 0);
-		up(&priv->action_sem);
+		mutex_unlock(&priv->action_mutex);
 	}
 
 	wireless_send_event(priv->net_dev, SIOCGIWAP, &wrqu, NULL);

drivers/net/wireless/ipw2100.h

 /******************************************************************************
 
-  Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved.
+  Copyright(c) 2003 - 2006 Intel Corporation. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify it
   under the terms of version 2 of the GNU General Public License as
@@ -41,7 +41,12 @@
 
 #include <net/ieee80211.h>
 
+#ifdef CONFIG_IPW2100_MONITOR
+#include <net/ieee80211_radiotap.h>
+#endif
+
 #include <linux/workqueue.h>
+#include <linux/mutex.h>
 
 struct ipw2100_priv;
 struct ipw2100_tx_packet;
@@ -590,8 +595,8 @@ struct ipw2100_priv {
 	int inta_other;
 
 	spinlock_t low_lock;
-	struct semaphore action_sem;
-	struct semaphore adapter_sem;
+	struct mutex action_mutex;
+	struct mutex adapter_mutex;
 
 	wait_queue_head_t wait_command_queue;
 };

drivers/net/wireless/ipw2200.h

 /******************************************************************************
 
-  Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved.
+  Copyright(c) 2003 - 2006 Intel Corporation. All rights reserved.
 
   This program is free software; you can redistribute it and/or modify it
   under the terms of version 2 of the GNU General Public License as
@@ -246,8 +246,10 @@ enum connection_manager_assoc_states {
 #define HOST_NOTIFICATION_S36_MEASUREMENT_REFUSED       31
 
 #define HOST_NOTIFICATION_STATUS_BEACON_MISSING         1
-#define IPW_MB_DISASSOCIATE_THRESHOLD_DEFAULT           24
+#define IPW_MB_ROAMING_THRESHOLD_MIN                    1
 #define IPW_MB_ROAMING_THRESHOLD_DEFAULT                8
+#define IPW_MB_ROAMING_THRESHOLD_MAX                    30
+#define IPW_MB_DISASSOCIATE_THRESHOLD_DEFAULT           3*IPW_MB_ROAMING_THRESHOLD_DEFAULT
 #define IPW_REAL_RATE_RX_PACKET_THRESHOLD               300
 
 #define MACADRR_BYTE_LEN                     6
@@ -618,13 +620,16 @@ struct notif_tgi_tx_key {
 	u8 reserved;
 } __attribute__ ((packed));
 
+#define SILENCE_OVER_THRESH (1)
+#define SILENCE_UNDER_THRESH (2)
+
 struct notif_link_deterioration {
 	struct ipw_cmd_stats stats;
 	u8 rate;
 	u8 modulation;
 	struct rate_histogram histogram;
-	u8 reserved1;
-	u16 reserved2;
+	u8 silence_notification_type;	/* SILENCE_OVER/UNDER_THRESH */
+	u16 silence_count;
 } __attribute__ ((packed));
 
 struct notif_association {
@@ -782,7 +787,7 @@ struct ipw_sys_config {
 	u8 enable_cts_to_self;
 	u8 enable_multicast_filtering;
 	u8 bt_coexist_collision_thr;
-	u8 reserved2;
+	u8 silence_threshold;
 	u8 accept_all_mgmt_bcpr;
 	u8 accept_all_mgtm_frames;
 	u8 pass_noise_stats_to_host;
@@ -1892,6 +1897,7 @@ struct ipw_cmd_log {
 #define CFG_SYS_ANTENNA_BOTH            0x00	/* NIC selects best antenna */
 #define CFG_SYS_ANTENNA_A               0x01	/* force antenna A */
 #define CFG_SYS_ANTENNA_B               0x03	/* force antenna B */
+#define CFG_SYS_ANTENNA_SLOW_DIV        0x02	/* consider background noise */
 
 /*
  * The definitions below were lifted off the ipw2100 driver, which only
@@ -1907,27 +1913,4 @@ struct ipw_cmd_log {
 
 #define IPW_MAX_CONFIG_RETRIES 10
 
-static inline u32 frame_hdr_len(struct ieee80211_hdr_4addr *hdr)
-{
-	u32 retval;
-	u16 fc;
-
-	retval = sizeof(struct ieee80211_hdr_3addr);
-	fc = le16_to_cpu(hdr->frame_ctl);
-
-	/*
-	 * Function     ToDS    FromDS
-	 * IBSS         0       0
-	 * To AP        1       0
-	 * From AP      0       1
-	 * WDS (bridge) 1       1
-	 *
-	 * Only WDS frames use Address4 among them. --YZ
-	 */
-	if (!(fc & IEEE80211_FCTL_TODS) || !(fc & IEEE80211_FCTL_FROMDS))
-		retval -= ETH_ALEN;
-
-	return retval;
-}
-
 #endif				/* __ipw2200_h__ */

net/ieee80211/ieee80211_rx.c

@@ -1345,7 +1345,19 @@ static void update_network(struct ieee80211_network *dst,
 	ieee80211_network_reset(dst);
 	dst->ibss_dfs = src->ibss_dfs;
 
-	memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
+	/* We only update the statistics if they were created by receiving
+	 * the network information on the actual channel the network is on.
+	 * 
+	 * This keeps beacons received on neighbor channels from bringing
+	 * down the signal level of an AP. */
+	if (dst->channel == src->stats.received_channel)
+		memcpy(&dst->stats, &src->stats,
+		       sizeof(struct ieee80211_rx_stats));
+	else
+		IEEE80211_DEBUG_SCAN("Network " MAC_FMT " info received "
+			"off channel (%d vs. %d)\n", MAC_ARG(src->bssid),
+			dst->channel, src->stats.received_channel);
+
 	dst->capability = src->capability;
 	memcpy(dst->rates, src->rates, src->rates_len);
 	dst->rates_len = src->rates_len;