[PATCH] hostap update

Added support for setting channel mask for scan requests
('iwpriv wlan0 scan_channels 0x00ff' masks scans to use channels 1-8).

Signed-off-by: Jouni Malinen <jkmaline@cc.hut.fi>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/wireless/hostap/hostap_common.h

@@ -423,6 +423,7 @@ enum {
 	PRISM2_PARAM_PRIVACY_INVOKED = 37,
 	PRISM2_PARAM_TKIP_COUNTERMEASURES = 38,
 	PRISM2_PARAM_DROP_UNENCRYPTED = 39,
+	PRISM2_PARAM_SCAN_CHANNEL_MASK = 40,
 };
 
 enum { HOSTAP_ANTSEL_DO_NOT_TOUCH = 0, HOSTAP_ANTSEL_DIVERSITY = 1,

drivers/net/wireless/hostap/hostap_hw.c

@@ -3374,6 +3374,7 @@ prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx,
 				   * cnfDbmAdjust, if available */
 	local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY;
 	local->sram_type = -1;
+	local->scan_channel_mask = 0xffff;
 #if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
 	local->bus_master_threshold_rx = GET_INT_PARM(bus_master_threshold_rx,
 						      card_idx);

drivers/net/wireless/hostap/hostap_ioctl.c

@@ -1664,7 +1664,8 @@ static int prism2_request_hostscan(struct net_device *dev,
 	local = iface->local;
 
 	memset(&scan_req, 0, sizeof(scan_req));
-	scan_req.channel_list = __constant_cpu_to_le16(local->channel_mask);
+	scan_req.channel_list = cpu_to_le16(local->channel_mask &
+					    local->scan_channel_mask);
 	scan_req.txrate = __constant_cpu_to_le16(HFA384X_RATES_1MBPS);
 	if (ssid) {
 		if (ssid_len > 32)
@@ -1693,7 +1694,8 @@ static int prism2_request_scan(struct net_device *dev)
 	local = iface->local;
 
 	memset(&scan_req, 0, sizeof(scan_req));
-	scan_req.channel_list = __constant_cpu_to_le16(local->channel_mask);
+	scan_req.channel_list = cpu_to_le16(local->channel_mask &
+					    local->scan_channel_mask);
 	scan_req.txrate = __constant_cpu_to_le16(HFA384X_RATES_1MBPS);
 
 	/* FIX:
@@ -2338,6 +2340,10 @@ static const struct iw_priv_args prism2_priv[] = {
 	  IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "drop_unencrypte" },
 	{ PRISM2_PARAM_DROP_UNENCRYPTED,
 	  0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getdrop_unencry" },
+	{ PRISM2_PARAM_SCAN_CHANNEL_MASK,
+	  IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "scan_channels" },
+	{ PRISM2_PARAM_SCAN_CHANNEL_MASK,
+	  0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getscan_channel" },
 };
 
 
@@ -2699,6 +2705,10 @@ static int prism2_ioctl_priv_prism2_param(struct net_device *dev,
 		local->drop_unencrypted = value;
 		break;
 
+	case PRISM2_PARAM_SCAN_CHANNEL_MASK:
+		local->scan_channel_mask = value;
+		break;
+
 	default:
 		printk(KERN_DEBUG "%s: prism2_param: unknown param %d\n",
 		       dev->name, param);
@@ -2890,6 +2900,10 @@ static int prism2_ioctl_priv_get_prism2_param(struct net_device *dev,
 		*param = local->drop_unencrypted;
 		break;
 
+	case PRISM2_PARAM_SCAN_CHANNEL_MASK:
+		*param = local->scan_channel_mask;
+		break;
+
 	default:
 		printk(KERN_DEBUG "%s: get_prism2_param: unknown param %d\n",
 		       dev->name, *param);

drivers/net/wireless/hostap/hostap_wlan.h

@@ -680,7 +680,8 @@ struct local_info {
 	char essid[MAX_SSID_LEN + 1];
 	char name[MAX_NAME_LEN + 1];
 	int name_set;
-	u16 channel_mask;
+	u16 channel_mask; /* mask of allowed channels */
+	u16 scan_channel_mask; /* mask of channels to be scanned */
 	struct comm_tallies_sums comm_tallies;
 	struct net_device_stats stats;
 	struct proc_dir_entry *proc;