commit 416a0c28b578da5f0ee55a7de8a7526ed6a42311
author Sravan Kumar Kairam <sgoud@codeaurora.org> Mon Jan 02 22:58:09 2017 +0530
committer Ashish kumar goswami <agoswa@codeaurora.org> Tue Jan 03 16:19:43 2017 +0530
tree ed78c252592754e0284c7e5fdfc8e819a3ea46b2
parent 2b44acb541cee123c0f4a52a4b7e36f12bbb5211

wlan: Handle slow RA rate ramp down when link goes bad rapidly

Currently when link quality deteriorate rapidly then station's RA
rate does get ramp down quickly resulting in pile up of stations in
its BTQM and also high PER.

In this change indicate to HDD as bad station when it's PER and BTQM
queue length reaches threshold.

Change-Id: I3a2c281fe19d150ca3843019cdb9f26498c6b9ce
CRs-Fixed: 1106748

CORE/TL/src/wlan_qct_tl.c

diff --git a/CORE/TL/src/wlan_qct_tl.c b/CORE/TL/src/wlan_qct_tl.c
index 21a6232..0933b44 100644
--- a/CORE/TL/src/wlan_qct_tl.c
+++ b/CORE/TL/src/wlan_qct_tl.c
@@ -244,6 +244,8 @@
 #define SEND_ARP_ON_WQ5    2
 
 #define WLANTL_RATE_RATIO_THRESHOLD 2
+#define WLANTL_PER_THRESHOLD 5
+#define WLANTL_QUEUE_THRESHOLD 60
 #define WLANTL_GOOD_STA_WEIGHT 1
 
 /*----------------------------------------------------------------------------
@@ -6061,7 +6063,12 @@
       }
       if (pTLCb->atlSTAClients[staid[i]]->weight <
           WLANTL_RATE_RATIO_THRESHOLD) {
-         if (pTLCb->atlSTAClients[staid[i]]->set_flag) {
+         if (pTLCb->atlSTAClients[staid[i]]->per > WLANTL_PER_THRESHOLD &&
+             pTLCb->atlSTAClients[staid[i]]->queue > WLANTL_QUEUE_THRESHOLD) {
+             vos_set_hdd_bad_sta(staid[i]);
+             pTLCb->atlSTAClients[staid[i]]->set_flag = true;
+         }
+         else if (pTLCb->atlSTAClients[staid[i]]->set_flag) {
             vos_reset_hdd_bad_sta(staid[i]);
             pTLCb->atlSTAClients[staid[i]]->set_flag = false;
          }