iwlwifi: improve scan support

This modifies iwlwifi to
 * no longer build its own probe request, but use mac80211's
 * therefore, support arbitrary scan IEs (up to the max len)
 * support multiple scan SSIDs
 * support passive scanning

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index f2317524028..c43c57d7a4c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -1309,8 +1309,10 @@ int iwl_setup_mac(struct iwl_priv *priv)
                 BIT(NL80211_IFTYPE_ADHOC);
 
         hw->wiphy->custom_regulatory = true;
-        hw->wiphy->max_scan_ssids = 1;
-        hw->wiphy->max_scan_ie_len = 0; /* XXX for now */
+
+        hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
+        /* we create the 802.11 header and a zero-length SSID element */
+        hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
 
         /* Default value; 4 EDCA QOS priorities */
         hw->queues = 4;