[PATCH 2/4] bgscan-simple: Poll for signal in init

Paul Stewart pstew at google.com
Thu Mar 24 16:31:50 EDT 2011


It is not guaranteed that we will get a CQM signal shortly
after setting up monitoring.  In order to establish the
correct initial background scanning rate, poll directly
for the signal strength.

Signed-off-by: Paul Stewart
---
 wpa_supplicant/bgscan_simple.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/wpa_supplicant/bgscan_simple.c b/wpa_supplicant/bgscan_simple.c
index 409d9ce..e2692c4 100644
--- a/wpa_supplicant/bgscan_simple.c
+++ b/wpa_supplicant/bgscan_simple.c
@@ -122,6 +122,15 @@ static void * bgscan_simple_init(struct wpa_supplicant *wpa_s,
 	}
 
 	data->scan_interval = data->short_interval;
+	if (data->signal_threshold) {
+		/* Poll for signal info to set initial scan interval */
+		struct wpa_signal_info siginfo;
+		if (wpa_drv_signal_poll(wpa_s, &siginfo) == 0 &&
+		    siginfo.current_signal >= data->signal_threshold)
+			data->scan_interval = data->long_interval;
+	}
+	wpa_printf(MSG_DEBUG, "bgscan simple: Init scan interval: %d",
+		   data->scan_interval);
 	eloop_register_timeout(data->scan_interval, 0, bgscan_simple_timeout,
 			       data, NULL);
 
-- 
1.7.3.1



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