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qcacld-3.0: Add counter for number of times scan was rejected due to -EBUSY

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This is a qcacld-2.0 to qcacld-3.0 propagation.

The counter is incremented and logged for each -EBUSY and reset when
scan request is successfully accepted.
It should help us debug cases where the recovery timeout logic
isn't working well or is too slow to react.

Change-Id: I9dd4384cec2a6aefb56e97c1d871c2d2a4819bf6
CRs-Fixed: 1113120
This commit is contained in:
Srinivas Girigowda 2017-03-08 00:09:34 -08:00 • committed by Sandeep Puligilla
commit 28c776bad9
1 changed files with 9 additions and 2 deletions
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11
core/hdd/src/wlan_hdd_scan.c
View file

@ -1508,6 +1508,7 @@ static int __wlan_hdd_cfg80211_scan(struct wiphy *wiphy,
#endif
uint8_t curr_session_id;
enum scan_reject_states curr_reason;
static uint32_t scan_ebusy_cnt;
ENTER();
@ -1595,7 +1596,8 @@ static int __wlan_hdd_cfg80211_scan(struct wiphy *wiphy,
/* Check if scan is allowed at this point of time */
if (hdd_is_connection_in_progress(&curr_session_id, &curr_reason)) {
hdd_err("Scan not allowed");
scan_ebusy_cnt++;
hdd_err("Scan not allowed. scan_ebusy_cnt: %d", scan_ebusy_cnt);
if (pHddCtx->last_scan_reject_session_id != curr_session_id ||
pHddCtx->last_scan_reject_reason != curr_reason ||
!pHddCtx->last_scan_reject_timestamp) {
@ -1883,7 +1885,9 @@ static int __wlan_hdd_cfg80211_scan(struct wiphy *wiphy,
if (QDF_STATUS_SUCCESS != status) {
hdd_err("sme_scan_request returned error %d", status);
if (QDF_STATUS_E_RESOURCES == status) {
hdd_err("HO is in progress.So defer the scan by informing busy");
scan_ebusy_cnt++;
hdd_err("HO is in progress. Defer scan scan_ebusy_cnt: %d",
scan_ebusy_cnt);
status = -EBUSY;
} else {
status = -EIO;
@ -1904,6 +1908,9 @@ free_mem:
if (channelList)
qdf_mem_free(channelList);
if (status == 0)
scan_ebusy_cnt = 0;
EXIT();
return status;
#endif