mwifiex: implement extended scan feature

In extended scan, host gets scan results through one or
multiple events instead of scan command response. Host will
send next scan command when all the events are received.

Legacy scan sometimes truncates scan results in a noisy
environment due to buffer length limitation. This issue
is addressed in extended scan.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 29d27d9b5ebe..c473f54ba738 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -59,7 +59,7 @@ enum {
 
 #define MWIFIEX_UPLD_SIZE               (2312)
 
-#define MAX_EVENT_SIZE                  1024
+#define MAX_EVENT_SIZE                  2048
 
 #define ARP_FILTER_MAX_BUF_SIZE         68
 
@@ -753,6 +753,7 @@ struct mwifiex_adapter {
         atomic_t is_tx_received;
         atomic_t pending_bridged_pkts;
         struct semaphore *card_sem;
+        bool ext_scan;
 };
 
 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter);
@@ -938,6 +939,12 @@ mwifiex_set_wmm_params(struct mwifiex_private *priv,
                        struct cfg80211_ap_settings *params);
 void mwifiex_set_ba_params(struct mwifiex_private *priv);
 void mwifiex_set_11ac_ba_params(struct mwifiex_private *priv);
+int mwifiex_cmd_802_11_scan_ext(struct mwifiex_private *priv,
+                                struct host_cmd_ds_command *cmd,
+                                void *data_buf);
+int mwifiex_ret_802_11_scan_ext(struct mwifiex_private *priv);
+int mwifiex_handle_event_ext_scan_report(struct mwifiex_private *priv,
+                                         void *buf);
 
 /*
  * This function checks if the queuing is RA based or not.