commit 5cba24e562c94e4eb346731ced4d4fed17d97b7e
author Siddharth Bhal <sbhal@qti.qualcomm.com> Thu May 08 18:59:39 2014 +0530
committer Kiet Lam <c_kietl@qca.qualcomm.com> Sat May 10 10:40:19 2014 -0700
tree 838319691d89b2fa3beba40c38cee949aeaa1f1a
parent ddce3aa847fa0a1bf9d6223f92b6dbae003aac12

wlan: Fix for SAP not operating in VHT mode

Updated the 11N fallback condition for the following case.
If (ACS disable and selected channel < 14 or ACS enabled
and ACS operating band is choosen as 2.4) AND if VHT in
2.4G is disabled: Then only fallback to 11N mode.

Change-Id: Ica5393255046a21978118940df36e25a2f48cd73
Crs-Fixed: 659660

CORE/HDD/src/wlan_hdd_cfg80211.c

diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index a301169..aed08c9 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -1908,6 +1908,7 @@
     v_CONTEXT_t pVosContext = (WLAN_HDD_GET_CTX(pHostapdAdapter))->pvosContext;
     tHalHandle hHal = WLAN_HDD_GET_HAL_CTX(pHostapdAdapter);
     struct qc_mac_acl_entry *acl_entry = NULL;
+    hdd_config_t *iniConfig;
     v_SINT_t i;
     hdd_context_t *pHddCtx = WLAN_HDD_GET_CTX(pHostapdAdapter);
     v_BOOL_t MFPCapable;
@@ -1917,6 +1918,8 @@
 
     ENTER();
 
+    iniConfig = pHddCtx->cfg_ini;
+
     pHostapdState = WLAN_HDD_GET_HOSTAP_STATE_PTR(pHostapdAdapter);
 
     pConfig = &pHostapdAdapter->sessionCtx.ap.sapConfig;
@@ -2216,9 +2219,18 @@
     {
         pConfig->SapHw_mode = eSAP_DOT11_MODE_11ac;
 
-        /* Disable VHT support in 2.4 GHz and */
-        if (pConfig->channel <= 14 &&
-            (WLAN_HDD_GET_CTX(pHostapdAdapter))->cfg_ini->enableVhtFor24GHzBand == FALSE)
+        /* If ACS disable and selected channel <= 14
+         *  OR
+         *  ACS enabled and ACS operating band is choosen as 2.4
+         *  AND
+         *  VHT in 2.4G Disabled
+         *  THEN
+         *  Fallback to 11N mode
+         */
+        if (((AUTO_CHANNEL_SELECT != pConfig->channel && pConfig->channel <= SIR_11B_CHANNEL_END)
+                    || (AUTO_CHANNEL_SELECT == pConfig->channel &&
+            iniConfig->apOperatingBand == RF_SUBBAND_2_4_GHZ)) &&
+                iniConfig->enableVhtFor24GHzBand == FALSE)
         {
             pConfig->SapHw_mode = eSAP_DOT11_MODE_11n;
         }