diff options
| author | Amitkumar Karwar <akarwar@marvell.com> | 2012-09-20 20:23:18 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-09-24 15:02:07 -0400 |
| commit | de09364eca2fc79f8585d4d476a60c6730664098 (patch) | |
| tree | 53e96fe26ffb80ee36c3af42ff2f5fe93134b7c3 /drivers/net/wireless/mwifiex/cfg80211.c | |
| parent | 22c22d2710ab828ea36487abd1d7f94f79a86a68 (diff) | |
mwifiex: block scan request during heavy Tx traffic
Currently scan operation is delayed/aborted based on Tx traffic
consistency. This decision is taken after receiving scan
response of first scan command from FW. But when heavy traffic
is running, we can not even afford to send first scan command
and go off channel for 30msec. We will block scan request in
this case.
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>
Diffstat (limited to 'drivers/net/wireless/mwifiex/cfg80211.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/cfg80211.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c index b9f7b3e6912d..aa619186d9b6 100644 --- a/drivers/net/wireless/mwifiex/cfg80211.c +++ b/drivers/net/wireless/mwifiex/cfg80211.c @@ -1502,6 +1502,12 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy, wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name); + if (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; + } + priv->scan_request = request; priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg), |