mwifiex: use LOW_PRIORITY scan flag provided in scan request
We will delay/abort scan operation based on traffic for low
priority 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>
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index 38a5871..6046132 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -1819,7 +1819,8 @@
wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
- if (atomic_read(&priv->wmm.tx_pkts_queued) >=
+ if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
+ atomic_read(&priv->wmm.tx_pkts_queued) >=
MWIFIEX_MIN_TX_PENDING_TO_CANCEL_SCAN) {
dev_dbg(priv->adapter->dev, "scan rejected due to traffic\n");
return -EBUSY;
@@ -2251,7 +2252,8 @@
wiphy->available_antennas_rx = BIT(adapter->number_of_antenna) - 1;
wiphy->features |= NL80211_FEATURE_HT_IBSS |
- NL80211_FEATURE_INACTIVITY_TIMER;
+ NL80211_FEATURE_INACTIVITY_TIMER |
+ NL80211_FEATURE_LOW_PRIORITY_SCAN;
/* Reserve space for mwifiex specific private data for BSS */
wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
index 5896b1f..0596526 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -1776,12 +1776,16 @@
priv->user_scan_cfg = NULL;
}
} else {
- if (!mwifiex_wmm_lists_empty(adapter)) {
+ if (!mwifiex_wmm_lists_empty(adapter) &&
+ (priv->scan_request && (priv->scan_request->flags &
+ NL80211_SCAN_FLAG_LOW_PRIORITY))) {
spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
flags);
adapter->scan_delay_cnt = 1;
mod_timer(&priv->scan_delay_timer, jiffies +
msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC));
+ dev_dbg(priv->adapter->dev,
+ "info: %s: deferring scan\n", __func__);
} else {
/* Get scan command from scan_pending_q and put to
cmd_pending_q */