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

6 files changed, 125 insertions, 109 deletions

diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c
index 233d527c69533..6a5de1b84459c 100644
--- a/net/ieee80211/ieee80211_tx.c
+++ b/net/ieee80211/ieee80211_tx.c
@@ -555,7 +555,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
 /* Incoming 802.11 strucure is converted to a TXB
  * a block of 802.11 fragment packets (stored as skbs) */
 int ieee80211_tx_frame(struct ieee80211_device *ieee,
-		       struct ieee80211_hdr *frame, int len)
+		       struct ieee80211_hdr *frame, int hdr_len, int total_len,
+		       int encrypt_mpdu)
 {
 	struct ieee80211_txb *txb = NULL;
 	unsigned long flags;
@@ -565,6 +566,9 @@ int ieee80211_tx_frame(struct ieee80211_device *ieee,
 
 	spin_lock_irqsave(&ieee->lock, flags);
 
+	if (encrypt_mpdu && !ieee->sec.encrypt)
+		encrypt_mpdu = 0;
+
 	/* If there is no driver handler to take the TXB, dont' bother
 	 * creating it... */
 	if (!ieee->hard_start_xmit) {
@@ -572,32 +576,41 @@ int ieee80211_tx_frame(struct ieee80211_device *ieee,
 		goto success;
 	}
 
-	if (unlikely(len < 24)) {
+	if (unlikely(total_len < 24)) {
 		printk(KERN_WARNING "%s: skb too small (%d).\n",
-		       ieee->dev->name, len);
+		       ieee->dev->name, total_len);
 		goto success;
 	}
 
+	if (encrypt_mpdu)
+		frame->frame_ctl |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+
 	/* When we allocate the TXB we allocate enough space for the reserve
 	 * and full fragment bytes (bytes_per_frag doesn't include prefix,
 	 * postfix, header, FCS, etc.) */
-	txb = ieee80211_alloc_txb(1, len, ieee->tx_headroom, GFP_ATOMIC);
+	txb = ieee80211_alloc_txb(1, total_len, ieee->tx_headroom, GFP_ATOMIC);
 	if (unlikely(!txb)) {
 		printk(KERN_WARNING "%s: Could not allocate TXB\n",
 		       ieee->dev->name);
 		goto failed;
 	}
 	txb->encrypted = 0;
-	txb->payload_size = len;
+	txb->payload_size = total_len;
 
 	skb_frag = txb->fragments[0];
 
-	memcpy(skb_put(skb_frag, len), frame, len);
+	memcpy(skb_put(skb_frag, total_len), frame, total_len);
 
 	if (ieee->config &
 	    (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
 		skb_put(skb_frag, 4);
 
+	/* To avoid overcomplicating things, we do the corner-case frame
+	 * encryption in software. The only real situation where encryption is
+	 * needed here is during software-based shared key authentication. */
+	if (encrypt_mpdu)
+		ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len);
+
       success:
 	spin_unlock_irqrestore(&ieee->lock, flags);
 
diff --git a/net/ieee80211/softmac/Kconfig b/net/ieee80211/softmac/Kconfig
index f2a27cc6ecb1f..2811651cb1340 100644
--- a/net/ieee80211/softmac/Kconfig
+++ b/net/ieee80211/softmac/Kconfig
@@ -2,6 +2,7 @@ config IEEE80211_SOFTMAC
 	tristate "Software MAC add-on to the IEEE 802.11 networking stack"
 	depends on IEEE80211 && EXPERIMENTAL
 	select WIRELESS_EXT
+	select IEEE80211_CRYPT_WEP
 	---help---
 	This option enables the hardware independent software MAC addon
 	for the IEEE 802.11 networking stack.
diff --git a/net/ieee80211/softmac/ieee80211softmac_assoc.c b/net/ieee80211/softmac/ieee80211softmac_assoc.c
index 5d90b9a6ee50f..5e9a90651d04f 100644
--- a/net/ieee80211/softmac/ieee80211softmac_assoc.c
+++ b/net/ieee80211/softmac/ieee80211softmac_assoc.c
@@ -164,12 +164,28 @@ network_matches_request(struct ieee80211softmac_device *mac, struct ieee80211_ne
 }
 
 static void
-ieee80211softmac_assoc_notify(struct net_device *dev, void *context)
+ieee80211softmac_assoc_notify_scan(struct net_device *dev, int event_type, void *context)
 {
 	struct ieee80211softmac_device *mac = ieee80211_priv(dev);
 	ieee80211softmac_assoc_work((void*)mac);
 }
 
+static void
+ieee80211softmac_assoc_notify_auth(struct net_device *dev, int event_type, void *context)
+{
+	struct ieee80211softmac_device *mac = ieee80211_priv(dev);
+
+	switch (event_type) {
+	case IEEE80211SOFTMAC_EVENT_AUTHENTICATED:
+		ieee80211softmac_assoc_work((void*)mac);
+		break;
+	case IEEE80211SOFTMAC_EVENT_AUTH_FAILED:
+	case IEEE80211SOFTMAC_EVENT_AUTH_TIMEOUT:
+		ieee80211softmac_disassoc(mac);
+		break;
+	}
+}
+
 /* This function is called to handle userspace requests (asynchronously) */
 void
 ieee80211softmac_assoc_work(void *d)
@@ -249,7 +265,7 @@ ieee80211softmac_assoc_work(void *d)
 			 * Maybe we can hope to have more memory after scanning finishes ;)
 			 */
 			dprintk(KERN_INFO PFX "Associate: Scanning for networks first.\n");
-			ieee80211softmac_notify(mac->dev, IEEE80211SOFTMAC_EVENT_SCAN_FINISHED, ieee80211softmac_assoc_notify, NULL);
+			ieee80211softmac_notify(mac->dev, IEEE80211SOFTMAC_EVENT_SCAN_FINISHED, ieee80211softmac_assoc_notify_scan, NULL);
 			if (ieee80211softmac_start_scan(mac))
 				dprintk(KERN_INFO PFX "Associate: failed to initiate scan. Is device up?\n");
 			return;
@@ -284,7 +300,7 @@ ieee80211softmac_assoc_work(void *d)
 		 * otherwise adding the notification would be racy. */
 		if (!ieee80211softmac_auth_req(mac, found)) {
 			dprintk(KERN_INFO PFX "cannot associate without being authenticated, requested authentication\n");
-			ieee80211softmac_notify_internal(mac, IEEE80211SOFTMAC_EVENT_ANY, found, ieee80211softmac_assoc_notify, NULL, GFP_KERNEL);
+			ieee80211softmac_notify_internal(mac, IEEE80211SOFTMAC_EVENT_ANY, found, ieee80211softmac_assoc_notify_auth, NULL, GFP_KERNEL);
 		} else {
 			printkl(KERN_WARNING PFX "Not authenticated, but requesting authentication failed. Giving up to associate\n");
 			ieee80211softmac_call_events(mac, IEEE80211SOFTMAC_EVENT_ASSOCIATE_FAILED, found);
diff --git a/net/ieee80211/softmac/ieee80211softmac_auth.c b/net/ieee80211/softmac/ieee80211softmac_auth.c
index 084b6211f293e..90b8484e509b8 100644
--- a/net/ieee80211/softmac/ieee80211softmac_auth.c
+++ b/net/ieee80211/softmac/ieee80211softmac_auth.c
@@ -107,6 +107,7 @@ ieee80211softmac_auth_queue(void *data)
 	printkl(KERN_WARNING PFX "Authentication timed out with "MAC_FMT"\n", MAC_ARG(net->bssid));
 	/* Remove this item from the queue */
 	spin_lock_irqsave(&mac->lock, flags);
+	net->authenticating = 0;
 	ieee80211softmac_call_events_locked(mac, IEEE80211SOFTMAC_EVENT_AUTH_TIMEOUT, net);
 	cancel_delayed_work(&auth->work); /* just to make sure... */
 	list_del(&auth->list);
@@ -212,13 +213,13 @@ ieee80211softmac_auth_resp(struct net_device *dev, struct ieee80211_auth *auth)
 			aq->state = IEEE80211SOFTMAC_AUTH_SHARED_RESPONSE; 
 			spin_unlock_irqrestore(&mac->lock, flags);
 
-			/* Switch to correct channel for this network */
-			mac->set_channel(mac->dev, net->channel);
-			
-			/* Send our response (How to encrypt?) */
+			/* Send our response */
 			ieee80211softmac_send_mgt_frame(mac, aq->net, IEEE80211_STYPE_AUTH, aq->state);
-			break;
+			return 0;
 		case IEEE80211SOFTMAC_AUTH_SHARED_PASS:
+			kfree(net->challenge);
+			net->challenge = NULL;
+			net->challenge_len = 0;
 			/* Check the status code of the response */
 			switch(auth->status) {
 			case WLAN_STATUS_SUCCESS:
@@ -229,6 +230,7 @@ ieee80211softmac_auth_resp(struct net_device *dev, struct ieee80211_auth *auth)
 				spin_unlock_irqrestore(&mac->lock, flags);
 				printkl(KERN_NOTICE PFX "Shared Key Authentication completed with "MAC_FMT"\n", 
 					MAC_ARG(net->bssid));
+				ieee80211softmac_call_events(mac, IEEE80211SOFTMAC_EVENT_AUTHENTICATED, net);
 				break;
 			default:
 				printkl(KERN_NOTICE PFX "Shared Key Authentication with "MAC_FMT" failed, error code: %i\n", 
diff --git a/net/ieee80211/softmac/ieee80211softmac_event.c b/net/ieee80211/softmac/ieee80211softmac_event.c
index 4b153f7cc96c7..f34fa2ef666b5 100644
--- a/net/ieee80211/softmac/ieee80211softmac_event.c
+++ b/net/ieee80211/softmac/ieee80211softmac_event.c
@@ -78,7 +78,7 @@ ieee80211softmac_notify_callback(void *d)
 	struct ieee80211softmac_event event = *(struct ieee80211softmac_event*) d;
 	kfree(d);
 	
-	event.fun(event.mac->dev, event.context);
+	event.fun(event.mac->dev, event.event_type, event.context);
 }
 
 int
@@ -167,6 +167,9 @@ ieee80211softmac_call_events_locked(struct ieee80211softmac_device *mac, int eve
 			if ((eventptr->event_type == event || eventptr->event_type == -1)
 				&& (eventptr->event_context == NULL || eventptr->event_context == event_ctx)) {
 				list_del(&eventptr->list);
+				/* User may have subscribed to ANY event, so
+				 * we tell them which event triggered it. */
+				eventptr->event_type = event;
 				schedule_work(&eventptr->work);
 			}
 		}
diff --git a/net/ieee80211/softmac/ieee80211softmac_io.c b/net/ieee80211/softmac/ieee80211softmac_io.c
index cc6cd56c85b10..09541611e48ce 100644
--- a/net/ieee80211/softmac/ieee80211softmac_io.c
+++ b/net/ieee80211/softmac/ieee80211softmac_io.c
@@ -149,6 +149,56 @@ ieee80211softmac_hdr_3addr(struct ieee80211softmac_device *mac,
 	 * shouldn't the sequence number be in ieee80211? */
 }
 
+static u16
+ieee80211softmac_capabilities(struct ieee80211softmac_device *mac,
+	struct ieee80211softmac_network *net)
+{
+	u16 capability = 0;
+
+	/* ESS and IBSS bits are set according to the current mode */
+	switch (mac->ieee->iw_mode) {
+	case IW_MODE_INFRA:
+		capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
+		break;
+	case IW_MODE_ADHOC:
+		capability = cpu_to_le16(WLAN_CAPABILITY_IBSS);
+		break;
+	case IW_MODE_AUTO:
+		capability = net->capabilities &
+			(WLAN_CAPABILITY_ESS|WLAN_CAPABILITY_IBSS);
+		break;
+	default:
+		/* bleh. we don't ever go to these modes */
+		printk(KERN_ERR PFX "invalid iw_mode!\n");
+		break;
+	}
+
+	/* CF Pollable / CF Poll Request */
+	/* Needs to be implemented, for now, the 0's == not supported */
+
+	/* Privacy Bit */
+	capability |= mac->ieee->sec.level ?
+		cpu_to_le16(WLAN_CAPABILITY_PRIVACY) : 0;
+
+	/* Short Preamble */
+	/* Always supported: we probably won't ever be powering devices which
+	 * dont support this... */
+	capability |= WLAN_CAPABILITY_SHORT_PREAMBLE;
+
+	/* PBCC */
+	/* Not widely used */
+
+	/* Channel Agility */
+	/* Not widely used */
+
+	/* Short Slot */
+	/* Will be implemented later */
+
+	/* DSSS-OFDM */
+	/* Not widely used */
+
+	return capability;
+}
 
 /*****************************************************************************
  * Create Management packets
@@ -179,27 +229,6 @@ ieee80211softmac_assoc_req(struct ieee80211_assoc_request **pkt,
 		return 0;
 	ieee80211softmac_hdr_3addr(mac, &((*pkt)->header), IEEE80211_STYPE_ASSOC_REQ, net->bssid, net->bssid);
 
-	/* Fill in capability Info */
-	switch (mac->ieee->iw_mode) {
-	case IW_MODE_INFRA:
-		(*pkt)->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
-		break;
-	case IW_MODE_ADHOC:
-		(*pkt)->capability = cpu_to_le16(WLAN_CAPABILITY_IBSS);
-		break;
-	case IW_MODE_AUTO:
-		(*pkt)->capability = net->capabilities & (WLAN_CAPABILITY_ESS|WLAN_CAPABILITY_IBSS);
-		break;
-	default:
-		/* bleh. we don't ever go to these modes */
-		printk(KERN_ERR PFX "invalid iw_mode!\n");
-		break;
-	}
-	/* Need to add this
-	(*pkt)->capability |= mac->ieee->short_slot ? 
-			cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME) : 0;
-	 */
-	(*pkt)->capability |= mac->ieee->sec.level ? cpu_to_le16(WLAN_CAPABILITY_PRIVACY) : 0;
 	/* Fill in Listen Interval (?) */
 	(*pkt)->listen_interval = cpu_to_le16(10);
 	
@@ -239,17 +268,9 @@ ieee80211softmac_reassoc_req(struct ieee80211_reassoc_request **pkt,
 		return 0;
 	ieee80211softmac_hdr_3addr(mac, &((*pkt)->header), IEEE80211_STYPE_REASSOC_REQ, net->bssid, net->bssid);
 
-	/* Fill in capability Info */
-	(*pkt)->capability = mac->ieee->iw_mode == IW_MODE_MASTER ? 
-				cpu_to_le16(WLAN_CAPABILITY_ESS) :
-				cpu_to_le16(WLAN_CAPABILITY_IBSS);
-	/*
-	(*pkt)->capability |= mac->ieee->short_slot ? 
-			cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME) : 0;
-	 */
-	(*pkt)->capability |= mac->ieee->sec.level ?
-			cpu_to_le16(WLAN_CAPABILITY_PRIVACY) : 0;
-		
+	/* Fill in the capabilities */
+	(*pkt)->capability = ieee80211softmac_capabilities(mac, net);
+
 	/* Fill in Listen Interval (?) */
 	(*pkt)->listen_interval = cpu_to_le16(10);
 	/* Fill in the current AP MAC */
@@ -268,26 +289,27 @@ ieee80211softmac_reassoc_req(struct ieee80211_reassoc_request **pkt,
 static u32
 ieee80211softmac_auth(struct ieee80211_auth **pkt, 
 	struct ieee80211softmac_device *mac, struct ieee80211softmac_network *net,
-	u16 transaction, u16 status)
+	u16 transaction, u16 status, int *encrypt_mpdu)
 {
 	u8 *data;
+	int auth_mode = mac->ieee->sec.auth_mode;
+	int is_shared_response = (auth_mode == WLAN_AUTH_SHARED_KEY
+		&& transaction == IEEE80211SOFTMAC_AUTH_SHARED_RESPONSE);
+
 	/* Allocate Packet */
 	(*pkt) = (struct ieee80211_auth *)ieee80211softmac_alloc_mgt(
 		2 +		/* Auth Algorithm */
 		2 +		/* Auth Transaction Seq */
 		2 +		/* Status Code */
 		 /* Challenge Text IE */
-		mac->ieee->open_wep ? 0 : 
-		1 + 1 + WLAN_AUTH_CHALLENGE_LEN
-	);	
+		is_shared_response ? 0 : 1 + 1 + net->challenge_len
+	);
 	if (unlikely((*pkt) == NULL))
 		return 0;
 	ieee80211softmac_hdr_3addr(mac, &((*pkt)->header), IEEE80211_STYPE_AUTH, net->bssid, net->bssid);
 		
 	/* Algorithm */
-	(*pkt)->algorithm = mac->ieee->open_wep ? 
-		cpu_to_le16(WLAN_AUTH_OPEN) :
-		cpu_to_le16(WLAN_AUTH_SHARED_KEY);
+	(*pkt)->algorithm = cpu_to_le16(auth_mode);
 	/* Transaction */
 	(*pkt)->transaction = cpu_to_le16(transaction);
 	/* Status */
@@ -295,18 +317,20 @@ ieee80211softmac_auth(struct ieee80211_auth **pkt,
 	
 	data = (u8 *)(*pkt)->info_element;
 	/* Challenge Text */
-	if(!mac->ieee->open_wep){
+	if (is_shared_response) {
 		*data = MFIE_TYPE_CHALLENGE;
 		data++;
 		
 		/* Copy the challenge in */
-		// *data = challenge length
-		// data += sizeof(u16);
-		// memcpy(data, challenge, challenge length);
-		// data += challenge length;
-		
-		/* Add the full size to the packet length */
-	}
+		*data = net->challenge_len;
+		data++;
+		memcpy(data, net->challenge, net->challenge_len);
+		data += net->challenge_len;
+
+		/* Make sure this frame gets encrypted with the shared key */
+		*encrypt_mpdu = 1;
+	} else
+		*encrypt_mpdu = 0;
 
 	/* Return the packet size */
 	return (data - (u8 *)(*pkt));
@@ -396,6 +420,7 @@ ieee80211softmac_send_mgt_frame(struct ieee80211softmac_device *mac,
 {
 	void *pkt = NULL;
 	u32 pkt_size = 0;
+	int encrypt_mpdu = 0;
 
 	switch(type) {
 	case IEEE80211_STYPE_ASSOC_REQ:
@@ -405,7 +430,7 @@ ieee80211softmac_send_mgt_frame(struct ieee80211softmac_device *mac,
 		pkt_size = ieee80211softmac_reassoc_req((struct ieee80211_reassoc_request **)(&pkt), mac, (struct ieee80211softmac_network *)ptrarg);
 		break;
 	case IEEE80211_STYPE_AUTH:
-		pkt_size = ieee80211softmac_auth((struct ieee80211_auth **)(&pkt), mac, (struct ieee80211softmac_network *)ptrarg, (u16)(arg & 0xFFFF), (u16) (arg >> 16));
+		pkt_size = ieee80211softmac_auth((struct ieee80211_auth **)(&pkt), mac, (struct ieee80211softmac_network *)ptrarg, (u16)(arg & 0xFFFF), (u16) (arg >> 16), &encrypt_mpdu);
 		break;
 	case IEEE80211_STYPE_DISASSOC:
 	case IEEE80211_STYPE_DEAUTH:
@@ -434,52 +459,8 @@ ieee80211softmac_send_mgt_frame(struct ieee80211softmac_device *mac,
 	 * or get rid of it alltogether?
 	 * Does this work for you now?
 	 */
-	ieee80211_tx_frame(mac->ieee, (struct ieee80211_hdr *)pkt, pkt_size);
-
-	kfree(pkt);
-	return 0;
-}
-
-
-/* Create an rts/cts frame */
-static u32
-ieee80211softmac_rts_cts(struct ieee80211_hdr_2addr **pkt,
-	struct ieee80211softmac_device *mac, struct ieee80211softmac_network *net, 
-	u32 type)
-{
-	/* Allocate Packet */
-	(*pkt) = kmalloc(IEEE80211_2ADDR_LEN, GFP_ATOMIC);	
-	memset(*pkt, 0, IEEE80211_2ADDR_LEN);
-	if((*pkt) == NULL)
-		return 0;
-	ieee80211softmac_hdr_2addr(mac, (*pkt), type, net->bssid);
-	return IEEE80211_2ADDR_LEN;
-}
-
-
-/* Sends a control packet */
-static int
-ieee80211softmac_send_ctl_frame(struct ieee80211softmac_device *mac,
-	struct ieee80211softmac_network *net, u32 type, u32 arg)
-{
-	void *pkt = NULL;
-	u32 pkt_size = 0;
-	
-	switch(type) {
-	case IEEE80211_STYPE_RTS:
-	case IEEE80211_STYPE_CTS:
-		pkt_size = ieee80211softmac_rts_cts((struct ieee80211_hdr_2addr **)(&pkt), mac, net, type);
-		break;
-	default:
-		printkl(KERN_DEBUG PFX "Unsupported Control Frame type: %i\n", type);
-		return -EINVAL;
-	}
-
-	if(pkt_size == 0)
-		return -ENOMEM;
-	
-	/* Send the packet to the ieee80211 layer for tx */
-	ieee80211_tx_frame(mac->ieee, (struct ieee80211_hdr *) pkt, pkt_size);
+	ieee80211_tx_frame(mac->ieee, (struct ieee80211_hdr *)pkt,
+		IEEE80211_3ADDR_LEN, pkt_size, encrypt_mpdu);
 
 	kfree(pkt);
 	return 0;