wext: Emit event stream entries correctly when compat.

Three major portions to this change:

1) Add IW_EV_COMPAT_LCP_LEN, IW_EV_COMPAT_POINT_OFF,
   and IW_EV_COMPAT_POINT_LEN helper defines.

2) Delete iw_stream_check_add_*(), they are unused.

3) Add iw_request_info argument to iwe_stream_add_*(), and use it to
   size the event and pointer lengths correctly depending upon whether
   IW_REQUEST_FLAG_COMPAT is set or not.

4) The mechanical transformations to the drivers and wireless stack
   bits to get the iw_request_info passed down into the routines
   modified in #3.  Also, explicit references to IW_EV_LCP_LEN are
   replaced with iwe_stream_lcp_len(info).

With a lot of help and bug fixes from Masakazu Mokuno.

Signed-off-by: David S. Miller <davem@davemloft.net>

12 files changed, 211 insertions, 157 deletions

diff --git a/drivers/net/ps3_gelic_wireless.c b/drivers/net/ps3_gelic_wireless.c
index aa963ac1e37b..6b2dee0cf3a9 100644
--- a/drivers/net/ps3_gelic_wireless.c
+++ b/drivers/net/ps3_gelic_wireless.c
@@ -571,6 +571,7 @@ static void gelic_wl_parse_ie(u8 *data, size_t len,
  * independent format
  */
 static char *gelic_wl_translate_scan(struct net_device *netdev,
+				     struct iw_request_info *info,
 				     char *ev,
 				     char *stop,
 				     struct gelic_wl_scan_info *network)
@@ -588,26 +589,26 @@ static char *gelic_wl_translate_scan(struct net_device *netdev,
 	iwe.cmd = SIOCGIWAP;
 	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 	memcpy(iwe.u.ap_addr.sa_data, &scan->bssid[2], ETH_ALEN);
-	ev = iwe_stream_add_event(ev, stop, &iwe, IW_EV_ADDR_LEN);
+	ev = iwe_stream_add_event(info, ev, stop, &iwe, IW_EV_ADDR_LEN);
 
 	/* ESSID */
 	iwe.cmd = SIOCGIWESSID;
 	iwe.u.data.flags = 1;
 	iwe.u.data.length = strnlen(scan->essid, 32);
-	ev = iwe_stream_add_point(ev, stop, &iwe, scan->essid);
+	ev = iwe_stream_add_point(info, ev, stop, &iwe, scan->essid);
 
 	/* FREQUENCY */
 	iwe.cmd = SIOCGIWFREQ;
 	iwe.u.freq.m = be16_to_cpu(scan->channel);
 	iwe.u.freq.e = 0; /* table value in MHz */
 	iwe.u.freq.i = 0;
-	ev = iwe_stream_add_event(ev, stop, &iwe, IW_EV_FREQ_LEN);
+	ev = iwe_stream_add_event(info, ev, stop, &iwe, IW_EV_FREQ_LEN);
 
 	/* RATES */
 	iwe.cmd = SIOCGIWRATE;
 	iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
 	/* to stuff multiple values in one event */
-	tmp = ev + IW_EV_LCP_LEN;
+	tmp = ev + iwe_stream_lcp_len(info);
 	/* put them in ascendant order (older is first) */
 	i = 0;
 	j = 0;
@@ -620,16 +621,16 @@ static char *gelic_wl_translate_scan(struct net_device *netdev,
 		else
 		    rate = scan->rate[i++] & 0x7f;
 		iwe.u.bitrate.value = rate * 500000; /* 500kbps unit */
-		tmp = iwe_stream_add_value(ev, tmp, stop, &iwe,
+		tmp = iwe_stream_add_value(info, ev, tmp, stop, &iwe,
 					   IW_EV_PARAM_LEN);
 	}
 	while (j < network->rate_ext_len) {
 		iwe.u.bitrate.value = (scan->ext_rate[j++] & 0x7f) * 500000;
-		tmp = iwe_stream_add_value(ev, tmp, stop, &iwe,
+		tmp = iwe_stream_add_value(info, ev, tmp, stop, &iwe,
 					   IW_EV_PARAM_LEN);
 	}
 	/* Check if we added any rate */
-	if (IW_EV_LCP_LEN < (tmp - ev))
+	if (iwe_stream_lcp_len(info) < (tmp - ev))
 		ev = tmp;
 
 	/* ENCODE */
@@ -639,7 +640,7 @@ static char *gelic_wl_translate_scan(struct net_device *netdev,
 	else
 		iwe.u.data.flags = IW_ENCODE_DISABLED;
 	iwe.u.data.length = 0;
-	ev = iwe_stream_add_point(ev, stop, &iwe, scan->essid);
+	ev = iwe_stream_add_point(info, ev, stop, &iwe, scan->essid);
 
 	/* MODE */
 	iwe.cmd = SIOCGIWMODE;
@@ -649,7 +650,7 @@ static char *gelic_wl_translate_scan(struct net_device *netdev,
 			iwe.u.mode = IW_MODE_MASTER;
 		else
 			iwe.u.mode = IW_MODE_ADHOC;
-		ev = iwe_stream_add_event(ev, stop, &iwe, IW_EV_UINT_LEN);
+		ev = iwe_stream_add_event(info, ev, stop, &iwe, IW_EV_UINT_LEN);
 	}
 
 	/* QUAL */
@@ -659,7 +660,7 @@ static char *gelic_wl_translate_scan(struct net_device *netdev,
 	iwe.u.qual.level = be16_to_cpu(scan->rssi);
 	iwe.u.qual.qual = be16_to_cpu(scan->rssi);
 	iwe.u.qual.noise = 0;
-	ev  = iwe_stream_add_event(ev, stop, &iwe, IW_EV_QUAL_LEN);
+	ev  = iwe_stream_add_event(info, ev, stop, &iwe, IW_EV_QUAL_LEN);
 
 	/* RSN */
 	memset(&iwe, 0, sizeof(iwe));
@@ -669,7 +670,7 @@ static char *gelic_wl_translate_scan(struct net_device *netdev,
 		if (len) {
 			iwe.cmd = IWEVGENIE;
 			iwe.u.data.length = len;
-			ev = iwe_stream_add_point(ev, stop, &iwe, buf);
+			ev = iwe_stream_add_point(info, ev, stop, &iwe, buf);
 		}
 	} else {
 		/* this scan info has IE data */
@@ -684,7 +685,7 @@ static char *gelic_wl_translate_scan(struct net_device *netdev,
 			memcpy(buf, ie_info.wpa.data, ie_info.wpa.len);
 			iwe.cmd = IWEVGENIE;
 			iwe.u.data.length = ie_info.wpa.len;
-			ev = iwe_stream_add_point(ev, stop, &iwe, buf);
+			ev = iwe_stream_add_point(info, ev, stop, &iwe, buf);
 		}
 
 		if (ie_info.rsn.len && (ie_info.rsn.len <= sizeof(buf))) {
@@ -692,7 +693,7 @@ static char *gelic_wl_translate_scan(struct net_device *netdev,
 			memcpy(buf, ie_info.rsn.data, ie_info.rsn.len);
 			iwe.cmd = IWEVGENIE;
 			iwe.u.data.length = ie_info.rsn.len;
-			ev = iwe_stream_add_point(ev, stop, &iwe, buf);
+			ev = iwe_stream_add_point(info, ev, stop, &iwe, buf);
 		}
 	}
 
@@ -737,7 +738,8 @@ static int gelic_wl_get_scan(struct net_device *netdev,
 		if (wl->scan_age == 0 ||
 		    time_after(scan_info->last_scanned + wl->scan_age,
 			       this_time))
-			ev = gelic_wl_translate_scan(netdev, ev, stop,
+			ev = gelic_wl_translate_scan(netdev, info,
+						     ev, stop,
 						     scan_info);
 		else
 			pr_debug("%s:entry too old\n", __func__);
diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index e30f8b79ea89..73d66a80c4a3 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -7156,6 +7156,7 @@ out:
  * format that the Wireless Tools will understand - Jean II
  */
 static inline char *airo_translate_scan(struct net_device *dev,
+					struct iw_request_info *info,
 					char *current_ev,
 					char *end_buf,
 					BSSListRid *bss)
@@ -7172,7 +7173,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
 	iwe.cmd = SIOCGIWAP;
 	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 	memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
-	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+					  &iwe, IW_EV_ADDR_LEN);
 
 	/* Other entries will be displayed in the order we give them */
 
@@ -7182,7 +7184,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
 		iwe.u.data.length = 32;
 	iwe.cmd = SIOCGIWESSID;
 	iwe.u.data.flags = 1;
-	current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss->ssid);
+	current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+					  &iwe, bss->ssid);
 
 	/* Add mode */
 	iwe.cmd = SIOCGIWMODE;
@@ -7192,7 +7195,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
 			iwe.u.mode = IW_MODE_MASTER;
 		else
 			iwe.u.mode = IW_MODE_ADHOC;
-		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_UINT_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_UINT_LEN);
 	}
 
 	/* Add frequency */
@@ -7203,7 +7207,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
 	 */
 	iwe.u.freq.m = frequency_list[iwe.u.freq.m - 1] * 100000;
 	iwe.u.freq.e = 1;
-	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+					  &iwe, IW_EV_FREQ_LEN);
 
 	dBm = le16_to_cpu(bss->dBm);
 
@@ -7223,7 +7228,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
 				| IW_QUAL_DBM;
 	}
 	iwe.u.qual.noise = ai->wstats.qual.noise;
-	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+					  &iwe, IW_EV_QUAL_LEN);
 
 	/* Add encryption capability */
 	iwe.cmd = SIOCGIWENCODE;
@@ -7232,11 +7238,12 @@ static inline char *airo_translate_scan(struct net_device *dev,
 	else
 		iwe.u.data.flags = IW_ENCODE_DISABLED;
 	iwe.u.data.length = 0;
-	current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss->ssid);
+	current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+					  &iwe, bss->ssid);
 
 	/* Rate : stuffing multiple values in a single event require a bit
 	 * more of magic - Jean II */
-	current_val = current_ev + IW_EV_LCP_LEN;
+	current_val = current_ev + iwe_stream_lcp_len(info);
 
 	iwe.cmd = SIOCGIWRATE;
 	/* Those two flags are ignored... */
@@ -7249,10 +7256,12 @@ static inline char *airo_translate_scan(struct net_device *dev,
 		/* Bit rate given in 500 kb/s units (+ 0x80) */
 		iwe.u.bitrate.value = ((bss->rates[i] & 0x7f) * 500000);
 		/* Add new value to event */
-		current_val = iwe_stream_add_value(current_ev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN);
+		current_val = iwe_stream_add_value(info, current_ev,
+						   current_val, end_buf,
+						   &iwe, IW_EV_PARAM_LEN);
 	}
 	/* Check if we added any event */
-	if((current_val - current_ev) > IW_EV_LCP_LEN)
+	if ((current_val - current_ev) > iwe_stream_lcp_len(info))
 		current_ev = current_val;
 
 	/* Beacon interval */
@@ -7261,7 +7270,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
 		iwe.cmd = IWEVCUSTOM;
 		sprintf(buf, "bcn_int=%d", bss->beaconInterval);
 		iwe.u.data.length = strlen(buf);
-		current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, buf);
+		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+						  &iwe, buf);
 		kfree(buf);
 	}
 
@@ -7295,8 +7305,10 @@ static inline char *airo_translate_scan(struct net_device *dev,
 					iwe.cmd = IWEVGENIE;
 					iwe.u.data.length = min(info_element->len + 2,
 								  MAX_WPA_IE_LEN);
-					current_ev = iwe_stream_add_point(current_ev, end_buf,
-							&iwe, (char *) info_element);
+					current_ev = iwe_stream_add_point(
+							info, current_ev,
+							end_buf, &iwe,
+							(char *) info_element);
 				}
 				break;
 
@@ -7304,8 +7316,9 @@ static inline char *airo_translate_scan(struct net_device *dev,
 				iwe.cmd = IWEVGENIE;
 				iwe.u.data.length = min(info_element->len + 2,
 							  MAX_WPA_IE_LEN);
-				current_ev = iwe_stream_add_point(current_ev, end_buf,
-						&iwe, (char *) info_element);
+				current_ev = iwe_stream_add_point(
+					info, current_ev, end_buf,
+					&iwe, (char *) info_element);
 				break;
 
 			default:
@@ -7344,7 +7357,7 @@ static int airo_get_scan(struct net_device *dev,
 
 	list_for_each_entry (net, &ai->network_list, list) {
 		/* Translate to WE format this entry */
-		current_ev = airo_translate_scan(dev, current_ev,
+		current_ev = airo_translate_scan(dev, info, current_ev,
 						 extra + dwrq->length,
 						 &net->bss);
 
diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c
index 7bb2646ae0ef..28b6ff3eaa37 100644
--- a/drivers/net/wireless/atmel.c
+++ b/drivers/net/wireless/atmel.c
@@ -2310,30 +2310,40 @@ static int atmel_get_scan(struct net_device *dev,
 		iwe.cmd = SIOCGIWAP;
 		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 		memcpy(iwe.u.ap_addr.sa_data, priv->BSSinfo[i].BSSID, 6);
-		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_ADDR_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, IW_EV_ADDR_LEN);
 
 		iwe.u.data.length =  priv->BSSinfo[i].SSIDsize;
 		if (iwe.u.data.length > 32)
 			iwe.u.data.length = 32;
 		iwe.cmd = SIOCGIWESSID;
 		iwe.u.data.flags = 1;
-		current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, priv->BSSinfo[i].SSID);
+		current_ev = iwe_stream_add_point(info, current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, priv->BSSinfo[i].SSID);
 
 		iwe.cmd = SIOCGIWMODE;
 		iwe.u.mode = priv->BSSinfo[i].BSStype;
-		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_UINT_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, IW_EV_UINT_LEN);
 
 		iwe.cmd = SIOCGIWFREQ;
 		iwe.u.freq.m = priv->BSSinfo[i].channel;
 		iwe.u.freq.e = 0;
-		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, IW_EV_FREQ_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, IW_EV_FREQ_LEN);
 
 		/* Add quality statistics */
 		iwe.cmd = IWEVQUAL;
 		iwe.u.qual.level = priv->BSSinfo[i].RSSI;
 		iwe.u.qual.qual  = iwe.u.qual.level;
 		/* iwe.u.qual.noise  = SOMETHING */
-		current_ev = iwe_stream_add_event(current_ev, extra + IW_SCAN_MAX_DATA , &iwe, IW_EV_QUAL_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, IW_EV_QUAL_LEN);
 
 
 		iwe.cmd = SIOCGIWENCODE;
@@ -2342,7 +2352,9 @@ static int atmel_get_scan(struct net_device *dev,
 		else
 			iwe.u.data.flags = IW_ENCODE_DISABLED;
 		iwe.u.data.length = 0;
-		current_ev = iwe_stream_add_point(current_ev, extra + IW_SCAN_MAX_DATA, &iwe, NULL);
+		current_ev = iwe_stream_add_point(info, current_ev,
+						  extra + IW_SCAN_MAX_DATA,
+						  &iwe, NULL);
 	}
 
 	/* Length of data */
diff --git a/drivers/net/wireless/hostap/hostap.h b/drivers/net/wireless/hostap/hostap.h
index 547ba84dc797..3a386a636cca 100644
--- a/drivers/net/wireless/hostap/hostap.h
+++ b/drivers/net/wireless/hostap/hostap.h
@@ -67,7 +67,8 @@ void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent,
 int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[],
 			   struct iw_quality qual[], int buf_size,
 			   int aplist);
-int prism2_ap_translate_scan(struct net_device *dev, char *buffer);
+int prism2_ap_translate_scan(struct net_device *dev,
+			     struct iw_request_info *info, char *buffer);
 int prism2_hostapd(struct ap_data *ap, struct prism2_hostapd_param *param);
 
 
diff --git a/drivers/net/wireless/hostap/hostap_ap.c b/drivers/net/wireless/hostap/hostap_ap.c
index 0acd9589c48c..06b23df8f69b 100644
--- a/drivers/net/wireless/hostap/hostap_ap.c
+++ b/drivers/net/wireless/hostap/hostap_ap.c
@@ -2420,7 +2420,8 @@ int prism2_ap_get_sta_qual(local_info_t *local, struct sockaddr addr[],
 
 /* Translate our list of Access Points & Stations to a card independant
  * format that the Wireless Tools will understand - Jean II */
-int prism2_ap_translate_scan(struct net_device *dev, char *buffer)
+int prism2_ap_translate_scan(struct net_device *dev,
+			     struct iw_request_info *info, char *buffer)
 {
 	struct hostap_interface *iface;
 	local_info_t *local;
@@ -2449,8 +2450,8 @@ int prism2_ap_translate_scan(struct net_device *dev, char *buffer)
 		iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 		memcpy(iwe.u.ap_addr.sa_data, sta->addr, ETH_ALEN);
 		iwe.len = IW_EV_ADDR_LEN;
-		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
-						  IW_EV_ADDR_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_ADDR_LEN);
 
 		/* Use the mode to indicate if it's a station or
 		 * an Access Point */
@@ -2461,8 +2462,8 @@ int prism2_ap_translate_scan(struct net_device *dev, char *buffer)
 		else
 			iwe.u.mode = IW_MODE_INFRA;
 		iwe.len = IW_EV_UINT_LEN;
-		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
-						  IW_EV_UINT_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_UINT_LEN);
 
 		/* Some quality */
 		memset(&iwe, 0, sizeof(iwe));
@@ -2477,8 +2478,8 @@ int prism2_ap_translate_scan(struct net_device *dev, char *buffer)
 		iwe.u.qual.noise = HFA384X_LEVEL_TO_dBm(sta->last_rx_silence);
 		iwe.u.qual.updated = sta->last_rx_updated;
 		iwe.len = IW_EV_QUAL_LEN;
-		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
-						  IW_EV_QUAL_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_QUAL_LEN);
 
 #ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
 		if (sta->ap) {
@@ -2486,8 +2487,8 @@ int prism2_ap_translate_scan(struct net_device *dev, char *buffer)
 			iwe.cmd = SIOCGIWESSID;
 			iwe.u.data.length = sta->u.ap.ssid_len;
 			iwe.u.data.flags = 1;
-			current_ev = iwe_stream_add_point(current_ev, end_buf,
-							  &iwe,
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf, &iwe,
 							  sta->u.ap.ssid);
 
 			memset(&iwe, 0, sizeof(iwe));
@@ -2497,10 +2498,9 @@ int prism2_ap_translate_scan(struct net_device *dev, char *buffer)
 					IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
 			else
 				iwe.u.data.flags = IW_ENCODE_DISABLED;
-			current_ev = iwe_stream_add_point(current_ev, end_buf,
-							  &iwe,
-							  sta->u.ap.ssid
-							  /* 0 byte memcpy */);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf, &iwe,
+							  sta->u.ap.ssid);
 
 			if (sta->u.ap.channel > 0 &&
 			    sta->u.ap.channel <= FREQ_COUNT) {
@@ -2510,7 +2510,7 @@ int prism2_ap_translate_scan(struct net_device *dev, char *buffer)
 					* 100000;
 				iwe.u.freq.e = 1;
 				current_ev = iwe_stream_add_event(
-					current_ev, end_buf, &iwe,
+					info, current_ev, end_buf, &iwe,
 					IW_EV_FREQ_LEN);
 			}
 
@@ -2519,8 +2519,8 @@ int prism2_ap_translate_scan(struct net_device *dev, char *buffer)
 			sprintf(buf, "beacon_interval=%d",
 				sta->listen_interval);
 			iwe.u.data.length = strlen(buf);
-			current_ev = iwe_stream_add_point(current_ev, end_buf,
-							  &iwe, buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf, &iwe, buf);
 		}
 #endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
 
diff --git a/drivers/net/wireless/hostap/hostap_ioctl.c b/drivers/net/wireless/hostap/hostap_ioctl.c
index 0ca0bfeb0ada..ed52d98317cd 100644
--- a/drivers/net/wireless/hostap/hostap_ioctl.c
+++ b/drivers/net/wireless/hostap/hostap_ioctl.c
@@ -1793,6 +1793,7 @@ static int prism2_ioctl_siwscan(struct net_device *dev,
 
 #ifndef PRISM2_NO_STATION_MODES
 static char * __prism2_translate_scan(local_info_t *local,
+				      struct iw_request_info *info,
 				      struct hfa384x_hostscan_result *scan,
 				      struct hostap_bss_info *bss,
 				      char *current_ev, char *end_buf)
@@ -1823,7 +1824,7 @@ static char * __prism2_translate_scan(local_info_t *local,
 	iwe.cmd = SIOCGIWAP;
 	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 	memcpy(iwe.u.ap_addr.sa_data, bssid, ETH_ALEN);
-	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe,
 					  IW_EV_ADDR_LEN);
 
 	/* Other entries will be displayed in the order we give them */
@@ -1832,7 +1833,8 @@ static char * __prism2_translate_scan(local_info_t *local,
 	iwe.cmd = SIOCGIWESSID;
 	iwe.u.data.length = ssid_len;
 	iwe.u.data.flags = 1;
-	current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, ssid);
+	current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+					  &iwe, ssid);
 
 	memset(&iwe, 0, sizeof(iwe));
 	iwe.cmd = SIOCGIWMODE;
@@ -1847,8 +1849,8 @@ static char * __prism2_translate_scan(local_info_t *local,
 			iwe.u.mode = IW_MODE_MASTER;
 		else
 			iwe.u.mode = IW_MODE_ADHOC;
-		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
-						  IW_EV_UINT_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_UINT_LEN);
 	}
 
 	memset(&iwe, 0, sizeof(iwe));
@@ -1864,8 +1866,8 @@ static char * __prism2_translate_scan(local_info_t *local,
 	if (chan > 0) {
 		iwe.u.freq.m = freq_list[chan - 1] * 100000;
 		iwe.u.freq.e = 1;
-		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
-						  IW_EV_FREQ_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_FREQ_LEN);
 	}
 
 	if (scan) {
@@ -1884,8 +1886,8 @@ static char * __prism2_translate_scan(local_info_t *local,
 			| IW_QUAL_NOISE_UPDATED
 			| IW_QUAL_QUAL_INVALID
 			| IW_QUAL_DBM;
-		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
-						  IW_EV_QUAL_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_QUAL_LEN);
 	}
 
 	memset(&iwe, 0, sizeof(iwe));
@@ -1895,13 +1897,13 @@ static char * __prism2_translate_scan(local_info_t *local,
 	else
 		iwe.u.data.flags = IW_ENCODE_DISABLED;
 	iwe.u.data.length = 0;
-	current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, "");
+	current_ev = iwe_stream_add_point(info, current_ev, end_buf, &iwe, "");
 
 	/* TODO: add SuppRates into BSS table */
 	if (scan) {
 		memset(&iwe, 0, sizeof(iwe));
 		iwe.cmd = SIOCGIWRATE;
-		current_val = current_ev + IW_EV_LCP_LEN;
+		current_val = current_ev + iwe_stream_lcp_len(info);
 		pos = scan->sup_rates;
 		for (i = 0; i < sizeof(scan->sup_rates); i++) {
 			if (pos[i] == 0)
@@ -1909,11 +1911,11 @@ static char * __prism2_translate_scan(local_info_t *local,
 			/* Bit rate given in 500 kb/s units (+ 0x80) */
 			iwe.u.bitrate.value = ((pos[i] & 0x7f) * 500000);
 			current_val = iwe_stream_add_value(
-				current_ev, current_val, end_buf, &iwe,
+				info, current_ev, current_val, end_buf, &iwe,
 				IW_EV_PARAM_LEN);
 		}
 		/* Check if we added any event */
-		if ((current_val - current_ev) > IW_EV_LCP_LEN)
+		if ((current_val - current_ev) > iwe_stream_lcp_len(info))
 			current_ev = current_val;
 	}
 
@@ -1924,15 +1926,15 @@ static char * __prism2_translate_scan(local_info_t *local,
 		iwe.cmd = IWEVCUSTOM;
 		sprintf(buf, "bcn_int=%d", le16_to_cpu(scan->beacon_interval));
 		iwe.u.data.length = strlen(buf);
-		current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
-						  buf);
+		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+						  &iwe, buf);
 
 		memset(&iwe, 0, sizeof(iwe));
 		iwe.cmd = IWEVCUSTOM;
 		sprintf(buf, "resp_rate=%d", le16_to_cpu(scan->rate));
 		iwe.u.data.length = strlen(buf);
-		current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
-						  buf);
+		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+						  &iwe, buf);
 
 		if (local->last_scan_type == PRISM2_HOSTSCAN &&
 		    (capabilities & WLAN_CAPABILITY_IBSS)) {
@@ -1940,8 +1942,8 @@ static char * __prism2_translate_scan(local_info_t *local,
 			iwe.cmd = IWEVCUSTOM;
 			sprintf(buf, "atim=%d", le16_to_cpu(scan->atim));
 			iwe.u.data.length = strlen(buf);
-			current_ev = iwe_stream_add_point(current_ev, end_buf,
-							  &iwe, buf);
+			current_ev = iwe_stream_add_point(info, current_ev,
+							  end_buf, &iwe, buf);
 		}
 	}
 	kfree(buf);
@@ -1950,16 +1952,16 @@ static char * __prism2_translate_scan(local_info_t *local,
 		memset(&iwe, 0, sizeof(iwe));
 		iwe.cmd = IWEVGENIE;
 		iwe.u.data.length = bss->wpa_ie_len;
-		current_ev = iwe_stream_add_point(
-			current_ev, end_buf, &iwe, bss->wpa_ie);
+		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+						  &iwe, bss->wpa_ie);
 	}
 
 	if (bss && bss->rsn_ie_len > 0 && bss->rsn_ie_len <= MAX_WPA_IE_LEN) {
 		memset(&iwe, 0, sizeof(iwe));
 		iwe.cmd = IWEVGENIE;
 		iwe.u.data.length = bss->rsn_ie_len;
-		current_ev = iwe_stream_add_point(
-			current_ev, end_buf, &iwe, bss->rsn_ie);
+		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+						  &iwe, bss->rsn_ie);
 	}
 
 	return current_ev;
@@ -1969,6 +1971,7 @@ static char * __prism2_translate_scan(local_info_t *local,
 /* Translate scan data returned from the card to a card independant
  * format that the Wireless Tools will understand - Jean II */
 static inline int prism2_translate_scan(local_info_t *local,
+					struct iw_request_info *info,
 					char *buffer, int buflen)
 {
 	struct hfa384x_hostscan_result *scan;
@@ -1999,13 +2002,14 @@ static inline int prism2_translate_scan(local_info_t *local,
 			if (memcmp(bss->bssid, scan->bssid, ETH_ALEN) == 0) {
 				bss->included = 1;
 				current_ev = __prism2_translate_scan(
-					local, scan, bss, current_ev, end_buf);
+					local, info, scan, bss, current_ev,
+					end_buf);
 				found++;
 			}
 		}
 		if (!found) {
 			current_ev = __prism2_translate_scan(
-				local, scan, NULL, current_ev, end_buf);
+				local, info, scan, NULL, current_ev, end_buf);
 		}
 		/* Check if there is space for one more entry */
 		if ((end_buf - current_ev) <= IW_EV_ADDR_LEN) {
@@ -2023,7 +2027,7 @@ static inline int prism2_translate_scan(local_info_t *local,
 		bss = list_entry(ptr, struct hostap_bss_info, list);
 		if (bss->included)
 			continue;
-		current_ev = __prism2_translate_scan(local, NULL, bss,
+		current_ev = __prism2_translate_scan(local, info, NULL, bss,
 						     current_ev, end_buf);
 		/* Check if there is space for one more entry */
 		if ((end_buf - current_ev) <= IW_EV_ADDR_LEN) {
@@ -2070,7 +2074,7 @@ static inline int prism2_ioctl_giwscan_sta(struct net_device *dev,
 	}
 	local->scan_timestamp = 0;
 
-	res = prism2_translate_scan(local, extra, data->length);
+	res = prism2_translate_scan(local, info, extra, data->length);
 
 	if (res >= 0) {
 		data->length = res;
@@ -2103,7 +2107,7 @@ static int prism2_ioctl_giwscan(struct net_device *dev,
 		 * Jean II */
 
 		/* Translate to WE format */
-		res = prism2_ap_translate_scan(dev, extra);
+		res = prism2_ap_translate_scan(dev, info, extra);
 		if (res >= 0) {
 			printk(KERN_DEBUG "Scan result translation succeeded "
 			       "(length=%d)\n", res);
diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c
index d448c9702a0f..343ed38f772d 100644
--- a/drivers/net/wireless/libertas/scan.c
+++ b/drivers/net/wireless/libertas/scan.c
@@ -776,8 +776,9 @@ out:
 #define MAX_CUSTOM_LEN 64
 
 static inline char *lbs_translate_scan(struct lbs_private *priv,
-				       char *start, char *stop,
-				       struct bss_descriptor *bss)
+					    struct iw_request_info *info,
+					    char *start, char *stop,
+					    struct bss_descriptor *bss)
 {
 	struct chan_freq_power *cfp;
 	char *current_val;	/* For rates */
@@ -801,24 +802,24 @@ static inline char *lbs_translate_scan(struct lbs_private *priv,
 	iwe.cmd = SIOCGIWAP;
 	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 	memcpy(iwe.u.ap_addr.sa_data, &bss->bssid, ETH_ALEN);
-	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN);
+	start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN);
 
 	/* SSID */
 	iwe.cmd = SIOCGIWESSID;
 	iwe.u.data.flags = 1;
 	iwe.u.data.length = min((uint32_t) bss->ssid_len, (uint32_t) IW_ESSID_MAX_SIZE);
-	start = iwe_stream_add_point(start, stop, &iwe, bss->ssid);
+	start = iwe_stream_add_point(info, start, stop, &iwe, bss->ssid);
 
 	/* Mode */
 	iwe.cmd = SIOCGIWMODE;
 	iwe.u.mode = bss->mode;
-	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_UINT_LEN);
+	start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_UINT_LEN);
 
 	/* Frequency */
 	iwe.cmd = SIOCGIWFREQ;
 	iwe.u.freq.m = (long)cfp->freq * 100000;
 	iwe.u.freq.e = 1;
-	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN);
+	start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);
 
 	/* Add quality statistics */
 	iwe.cmd = IWEVQUAL;
@@ -852,7 +853,7 @@ static inline char *lbs_translate_scan(struct lbs_private *priv,
 		nf = priv->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE;
 		iwe.u.qual.level = CAL_RSSI(snr, nf);
 	}
-	start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN);
+	start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN);
 
 	/* Add encryption capability */
 	iwe.cmd = SIOCGIWENCODE;
@@ -862,9 +863,9 @@ static inline char *lbs_translate_scan(struct lbs_private *priv,
 		iwe.u.data.flags = IW_ENCODE_DISABLED;
 	}
 	iwe.u.data.length = 0;
-	start = iwe_stream_add_point(start, stop, &iwe, bss->ssid);
+	start = iwe_stream_add_point(info, start, stop, &iwe, bss->ssid);
 
-	current_val = start + IW_EV_LCP_LEN;
+	current_val = start + iwe_stream_lcp_len(info);
 
 	iwe.cmd = SIOCGIWRATE;
 	iwe.u.bitrate.fixed = 0;
@@ -874,19 +875,19 @@ static inline char *lbs_translate_scan(struct lbs_private *priv,
 	for (j = 0; bss->rates[j] && (j < sizeof(bss->rates)); j++) {
 		/* Bit rate given in 500 kb/s units */
 		iwe.u.bitrate.value = bss->rates[j] * 500000;
-		current_val = iwe_stream_add_value(start, current_val,
-					 stop, &iwe, IW_EV_PARAM_LEN);
+		current_val = iwe_stream_add_value(info, start, current_val,
+						   stop, &iwe, IW_EV_PARAM_LEN);
 	}
 	if ((bss->mode == IW_MODE_ADHOC) && priv->adhoccreate
 	    && !lbs_ssid_cmp(priv->curbssparams.ssid,
 			     priv->curbssparams.ssid_len,
 			     bss->ssid, bss->ssid_len)) {
 		iwe.u.bitrate.value = 22 * 500000;
-		current_val = iwe_stream_add_value(start, current_val,
+		current_val = iwe_stream_add_value(info, start, current_val,
 						   stop, &iwe, IW_EV_PARAM_LEN);
 	}
 	/* Check if we added any event */
-	if((current_val - start) > IW_EV_LCP_LEN)
+	if ((current_val - start) > iwe_stream_lcp_len(info))
 		start = current_val;
 
 	memset(&iwe, 0, sizeof(iwe));
@@ -895,7 +896,7 @@ static inline char *lbs_translate_scan(struct lbs_private *priv,
 		memcpy(buf, bss->wpa_ie, bss->wpa_ie_len);
 		iwe.cmd = IWEVGENIE;
 		iwe.u.data.length = bss->wpa_ie_len;
-		start = iwe_stream_add_point(start, stop, &iwe, buf);
+		start = iwe_stream_add_point(info, start, stop, &iwe, buf);
 	}
 
 	memset(&iwe, 0, sizeof(iwe));
@@ -904,7 +905,7 @@ static inline char *lbs_translate_scan(struct lbs_private *priv,
 		memcpy(buf, bss->rsn_ie, bss->rsn_ie_len);
 		iwe.cmd = IWEVGENIE;
 		iwe.u.data.length = bss->rsn_ie_len;
-		start = iwe_stream_add_point(start, stop, &iwe, buf);
+		start = iwe_stream_add_point(info, start, stop, &iwe, buf);
 	}
 
 	if (bss->mesh) {
@@ -915,7 +916,8 @@ static inline char *lbs_translate_scan(struct lbs_private *priv,
 		p += snprintf(p, MAX_CUSTOM_LEN, "mesh-type: olpc");
 		iwe.u.data.length = p - custom;
 		if (iwe.u.data.length)
-			start = iwe_stream_add_point(start, stop, &iwe, custom);
+			start = iwe_stream_add_point(info, start, stop,
+						     &iwe, custom);
 	}
 
 out:
@@ -1036,7 +1038,7 @@ int lbs_get_scan(struct net_device *dev, struct iw_request_info *info,
 		}
 
 		/* Translate to WE format this entry */
-		next_ev = lbs_translate_scan(priv, ev, stop, iter_bss);
+		next_ev = lbs_translate_scan(priv, info, ev, stop, iter_bss);
 		if (next_ev == NULL)
 			continue;
 		ev = next_ev;
diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c
index 6d13a0d15a0c..b047306bf386 100644
--- a/drivers/net/wireless/orinoco.c
+++ b/drivers/net/wireless/orinoco.c
@@ -4046,6 +4046,7 @@ static int orinoco_ioctl_setscan(struct net_device *dev,
  * format that the Wireless Tools will understand - Jean II
  * Return message length or -errno for fatal errors */
 static inline char *orinoco_translate_scan(struct net_device *dev,
+					   struct iw_request_info *info,
 					   char *current_ev,
 					   char *end_buf,
 					   union hermes_scan_info *bss,
@@ -4062,7 +4063,8 @@ static inline char *orinoco_translate_scan(struct net_device *dev,
 	iwe.cmd = SIOCGIWAP;
 	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 	memcpy(iwe.u.ap_addr.sa_data, bss->a.bssid, ETH_ALEN);
-	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+					  &iwe, IW_EV_ADDR_LEN);
 
 	/* Other entries will be displayed in the order we give them */
 
@@ -4072,7 +4074,8 @@ static inline char *orinoco_translate_scan(struct net_device *dev,
 		iwe.u.data.length = 32;
 	iwe.cmd = SIOCGIWESSID;
 	iwe.u.data.flags = 1;
-	current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss->a.essid);
+	current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+					  &iwe, bss->a.essid);
 
 	/* Add mode */
 	iwe.cmd = SIOCGIWMODE;
@@ -4082,7 +4085,8 @@ static inline char *orinoco_translate_scan(struct net_device *dev,
 			iwe.u.mode = IW_MODE_MASTER;
 		else
 			iwe.u.mode = IW_MODE_ADHOC;
-		current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_UINT_LEN);
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+						  &iwe, IW_EV_UINT_LEN);
 	}
 
 	channel = bss->s.channel;
@@ -4091,7 +4095,7 @@ static inline char *orinoco_translate_scan(struct net_device *dev,
 		iwe.cmd = SIOCGIWFREQ;
 		iwe.u.freq.m = channel_frequency[channel-1] * 100000;
 		iwe.u.freq.e = 1;
-		current_ev = iwe_stream_add_event(current_ev, end_buf,
+		current_ev = iwe_stream_add_event(info, current_ev, end_buf,
 						  &iwe, IW_EV_FREQ_LEN);
 	}
 
@@ -4106,7 +4110,8 @@ static inline char *orinoco_translate_scan(struct net_device *dev,
 		iwe.u.qual.qual = iwe.u.qual.level - iwe.u.qual.noise;
 	else
 		iwe.u.qual.qual = 0;
-	current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
+	current_ev = iwe_stream_add_event(info, current_ev, end_buf,
+					  &iwe, IW_EV_QUAL_LEN);
 
 	/* Add encryption capability */
 	iwe.cmd = SIOCGIWENCODE;
@@ -4115,7 +4120,8 @@ static inline char *orinoco_translate_scan(struct net_device *dev,
 	else
 		iwe.u.data.flags = IW_ENCODE_DISABLED;
 	iwe.u.data.length = 0;
-	current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss->a.essid);
+	current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+					  &iwe, bss->a.essid);
 
 	/* Add EXTRA: Age to display seconds since last beacon/probe response
 	 * for given network. */
@@ -4126,11 +4132,12 @@ static inline char *orinoco_translate_scan(struct net_device *dev,
 		      jiffies_to_msecs(jiffies - last_scanned));
 	iwe.u.data.length = p - custom;
 	if (iwe.u.data.length)
-		current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, custom);
+		current_ev = iwe_stream_add_point(info, current_ev, end_buf,
+						  &iwe, custom);
 
 	/* Bit rate is not available in Lucent/Agere firmwares */
 	if (priv->firmware_type != FIRMWARE_TYPE_AGERE) {
-		char *current_val = current_ev + IW_EV_LCP_LEN;
+		char *current_val = current_ev + iwe_stream_lcp_len(info);
 		int i;
 		int step;
 
@@ -4149,12 +4156,