iwlwifi: mvm: enable pre-scan passive to active

Enable passive to active scan feature, on channels that was
active in the past hour.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h b/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
index b60d141..c33ff8e 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
+++ b/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
@@ -138,6 +138,8 @@ struct iwl_ssid_ie {
  *@SCAN_FLAGS_DELAYED_SCAN_LOWBAND:
  *@SCAN_FLAGS_DELAYED_SCAN_HIGHBAND:
  *@SCAN_FLAGS_FRAGMENTED_SCAN:
+ *@SCAN_FLAGS_PASSIVE2ACTIVE: use active scan on channels that was active
+ *     in the past hour, even if they are marked as passive.
  */
 enum iwl_scan_flags {
        SCAN_FLAGS_PERIODIC_SCAN                = BIT(0),
@@ -145,6 +147,7 @@ enum iwl_scan_flags {
        SCAN_FLAGS_DELAYED_SCAN_LOWBAND         = BIT(2),
        SCAN_FLAGS_DELAYED_SCAN_HIGHBAND        = BIT(3),
        SCAN_FLAGS_FRAGMENTED_SCAN              = BIT(4),
+       SCAN_FLAGS_PASSIVE2ACTIVE               = BIT(5),
 };
 
 /**
@@ -179,7 +182,7 @@ enum iwl_scan_type {
  * @quiet_time: in msecs, dwell this time for active scan on quiet channels
  * @quiet_plcp_th: quiet PLCP threshold (channel is quiet if less than
  *     this number of packets were received (typically 1)
- * @passive2active: is auto switching from passive to active allowed (0 or 1)
+ * @passive2active: is auto switching from passive to active during scan allowed
  * @rxchain_sel_flags: RXON_RX_CHAIN_*
  * @max_out_time: in usecs, max out of serving channel time
  * @suspend_time: how long to pause scan when returning to service channel:

diff --git a/drivers/net/wireless/iwlwifi/mvm/scan.c b/drivers/net/wireless/iwlwifi/mvm/scan.c
index 2157b0f..dc63579 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/iwlwifi/mvm/scan.c
@@ -306,10 +306,12 @@ int iwl_mvm_scan_request(struct iwl_mvm *mvm,
         */
        if (req->n_ssids > 0) {
                cmd->passive2active = cpu_to_le16(1);
+               cmd->scan_flags |= SCAN_FLAGS_PASSIVE2ACTIVE;
                ssid = req->ssids[0].ssid;
                ssid_len = req->ssids[0].ssid_len;
        } else {
                cmd->passive2active = 0;
+               cmd->scan_flags &= ~SCAN_FLAGS_PASSIVE2ACTIVE;
        }
 
        iwl_mvm_scan_fill_ssids(cmd, req);