diff options
| author | Christian Lamparter <chunkeey@googlemail.com> | 2011-08-15 21:50:48 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-08-24 22:41:42 +0400 |
| commit | acf1771221f2877ab5d36487930cd6a2ecaa73e6 (patch) | |
| tree | cbe4f29eb2b7c5a78a63f99bdffdbaaac141ef33 /drivers/net/wireless/ath/carl9170/cmd.c | |
| parent | f5e2289a142c714732aef67cadbb0a8843565507 (diff) | |
| download | linux-acf1771221f2877ab5d36487930cd6a2ecaa73e6.tar.xz | |
carl9170: improve site survey
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>
Diffstat (limited to 'drivers/net/wireless/ath/carl9170/cmd.c')
| -rw-r--r-- | drivers/net/wireless/ath/carl9170/cmd.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/carl9170/cmd.c b/drivers/net/wireless/ath/carl9170/cmd.c index cdfc94c371b4..9970bf8edc40 100644 --- a/drivers/net/wireless/ath/carl9170/cmd.c +++ b/drivers/net/wireless/ath/carl9170/cmd.c @@ -165,6 +165,37 @@ int carl9170_bcn_ctrl(struct ar9170 *ar, const unsigned int vif_id, return __carl9170_exec_cmd(ar, cmd, true); } +int carl9170_collect_tally(struct ar9170 *ar) +{ + struct carl9170_tally_rsp tally; + struct survey_info *info; + unsigned int tick; + int err; + + err = carl9170_exec_cmd(ar, CARL9170_CMD_TALLY, 0, NULL, + sizeof(tally), (u8 *)&tally); + if (err) + return err; + + tick = le32_to_cpu(tally.tick); + if (tick) { + ar->tally.active += le32_to_cpu(tally.active) / tick; + ar->tally.cca += le32_to_cpu(tally.cca) / tick; + ar->tally.tx_time += le32_to_cpu(tally.tx_time) / tick; + ar->tally.rx_total += le32_to_cpu(tally.rx_total); + ar->tally.rx_overrun += le32_to_cpu(tally.rx_overrun); + + if (ar->channel) { + info = &ar->survey[ar->channel->hw_value]; + + info->channel_time = ar->tally.active / 1000; + info->channel_time_busy = ar->tally.cca / 1000; + info->channel_time_tx = ar->tally.tx_time / 1000; + } + } + return 0; +} + int carl9170_powersave(struct ar9170 *ar, const bool ps) { struct carl9170_cmd *cmd; |