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[5/6] AP: Avoid 20/40 MHz co-ex scan if PRI/SEC switch is not allowed

Message ID 1446560701-30841-6-git-send-email-ilan.peer@intel.com
State Accepted
Headers show

Commit Message

Peer, Ilan Nov. 3, 2015, 2:25 p.m. UTC 
From: Alexander Bondar <alexander.bondar@intel.com>

When an AP is started on the 5.2 band with 40MHz bandwidth, a
scan is issued in order to handle 20/40 MHz coexistence. However,
the scan is issued even if iface->conf->no_pri_sec_switch is set,
which is redundant.

Fix this by checking iface->conf->no_pri_sec_switch before starting
the scan.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
---
 src/ap/hw_features.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/src/ap/hw_features.c b/src/ap/hw_features.c
index fc8786d..3607066 100644
--- a/src/ap/hw_features.c
+++ b/src/ap/hw_features.c
@@ -472,8 +472,9 @@  static int ieee80211n_check_40mhz(struct hostapd_iface *iface)
 	struct wpa_driver_scan_params params;
 	int ret;
 
-	if (!iface->conf->secondary_channel)
-		return 0; /* HT40 not used */
+	/* Check that HT40 is used and PRI / SEC switch is allowed */
+	if (!iface->conf->secondary_channel || iface->conf->no_pri_sec_switch)
+		return 0;
 
 	hostapd_set_state(iface, HAPD_IFACE_HT_SCAN);
 	wpa_printf(MSG_DEBUG, "Scan for neighboring BSSes prior to enabling "