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, 5 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/sta_cmdresp.c b/drivers/net/wireless/mwifiex/sta_cmdresp.c
index 24523e4015cb..95e13589d2bd 100644
--- a/drivers/net/wireless/mwifiex/sta_cmdresp.c
+++ b/drivers/net/wireless/mwifiex/sta_cmdresp.c
@@ -69,6 +69,7 @@ mwifiex_process_cmdresp_error(struct mwifiex_private *priv,
 
                 break;
         case HostCmd_CMD_802_11_SCAN:
+        case HostCmd_CMD_802_11_SCAN_EXT:
                 /* Cancel all pending scan command */
                 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
                 list_for_each_entry_safe(cmd_node, tmp_node,
@@ -871,6 +872,10 @@ int mwifiex_process_sta_cmdresp(struct mwifiex_private *priv, u16 cmdresp_no,
                 ret = mwifiex_ret_802_11_scan(priv, resp);
                 adapter->curr_cmd->wait_q_enabled = false;
                 break;
+        case HostCmd_CMD_802_11_SCAN_EXT:
+                ret = mwifiex_ret_802_11_scan_ext(priv);
+                adapter->curr_cmd->wait_q_enabled = false;
+                break;
         case HostCmd_CMD_802_11_BG_SCAN_QUERY:
                 ret = mwifiex_ret_802_11_scan(priv, resp);
                 dev_dbg(adapter->dev,