xiaomi-sm8450/android_kernel_xiaomi_sm8450
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carl9170: improve site survey

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The firmware keeps track of channel usage. This data can
be used by the automatic channel selection to find the
*best* channel.

Survey data from wlan22
	frequency:                      2412 MHz [in use]
	noise:                          -86 dBm
	channel active time:            3339608 ms
	channel busy time:              270982 ms
	channel transmit time:          121515 ms
Survey data from wlan22
	frequency:                      2417 MHz
	noise:                          -86 dBm
	channel active time:            70 ms
	channel busy time:              2 ms
	channel transmit time:          1 ms

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter
2011-08-15 19:50:48 +02:00
committed by John W. Linville
parent f5e2289a14
commit acf1771221
5 changed files with 153 additions and 15 deletions
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11
drivers/net/wireless/ath/carl9170/carl9170.h
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@@ -151,6 +151,7 @@ struct carl9170_sta_tid {
#define CARL9170_TX_TIMEOUT 2500
#define CARL9170_JANITOR_DELAY 128
#define CARL9170_QUEUE_STUCK_TIMEOUT 5500
#define CARL9170_STAT_WORK 30000
#define CARL9170_NUM_TX_AGG_MAX 30
@@ -332,11 +333,21 @@ struct ar9170 {
/* PHY */
struct ieee80211_channel *channel;
unsigned int num_channels;
int noise[4];
unsigned int chan_fail;
unsigned int total_chan_fail;
u8 heavy_clip;
u8 ht_settings;
struct {
u64 active; /* usec */
u64 cca; /* usec */
u64 tx_time; /* usec */
u64 rx_total;
u64 rx_overrun;
} tally;
struct delayed_work stat_work;
struct survey_info *survey;
/* power calibration data */
u8 power_5G_leg[4];