mwifiex: add support for WPS2.0

This patches enables setting association request and probe request
IE for station interface. WPS exchange between WPS2.0 AP and mwifiex
STA Enrollee/External Registrar completes successfully.

Tested with wpa_supplicant 1.0 and 2.0 devel.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index bd07030..01d4d17 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -1162,6 +1162,17 @@
 	priv->user_scan_cfg->num_ssids = request->n_ssids;
 	priv->user_scan_cfg->ssid_list = request->ssids;
 
+	if (request->ie && request->ie_len) {
+		for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
+			if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
+				continue;
+			priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
+			memcpy(&priv->vs_ie[i].ie, request->ie,
+			       request->ie_len);
+			break;
+		}
+	}
+
 	for (i = 0; i < request->n_channels; i++) {
 		chan = request->channels[i];
 		priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
@@ -1179,6 +1190,15 @@
 	if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
 		return -EFAULT;
 
+	if (request->ie && request->ie_len) {
+		for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
+			if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
+				priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
+				memset(&priv->vs_ie[i].ie, 0,
+				       MWIFIEX_MAX_VSIE_LEN);
+			}
+		}
+	}
 	return 0;
 }
 
@@ -1439,6 +1459,7 @@
 	}
 	wdev->iftype = NL80211_IFTYPE_STATION;
 	wdev->wiphy->max_scan_ssids = 10;
+	wdev->wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
 	wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 				       BIT(NL80211_IFTYPE_ADHOC);