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Date: Tue, 1 May 2018 15:46:11 -0700
From: "João Paulo Rechi Vita" <jprvita@...il.com>
To: Larry Finger <Larry.Finger@...inger.net>
Cc: Steve deRosier <derosier@...il.com>,
Yan-Hsuan Chuang <yhchuang@...ltek.com>,
Ping-Ke Shih <pkshih@...ltek.com>,
Birming Chiu <birming@...ltek.com>,
Shaofu <shaofu@...ltek.com>,
Steven Ting <steventing@...ltek.com>,
Chaoming Li <chaoming_li@...lsil.com.cn>,
Kalle Valo <kvalo@...eaurora.org>,
linux-wireless <linux-wireless@...r.kernel.org>,
Network Development <netdev@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>,
Daniel Drake <drake@...lessm.com>,
João Paulo Rechi Vita <jprvita@...lessm.com>,
linux@...lessm.com
Subject: [RFC PATCH 1/3] rtlwifi: btcoex: Don't init antenna position to main port
This partially reverts commit 40d9dd4f1c5dcd0d4a2a1f0efcd225c9c4b36d6f,
which does not only remove global variables from btcoex, as described on
its commit message, but also does a few other things -- in particular,
setting the default antenna position to BTC_ANTENNA_AT_MAIN_PORT.
This drastically affects the upload performance and signal strenght on
the HP 240 G4 laptop, as shown by the results bellow:
Without this change:
$ sudo iw dev wlp2s0 scan | grep -B3 JJ | grep signal
signal: -42.00 dBm
$ iperf3 -c 192.168.1.254
Connecting to host 192.168.1.254, port 5201
[ 4] local 192.168.1.253 port 39678 connected to 192.168.1.254 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-1.00 sec 735 KBytes 6.02 Mbits/sec 1 1.41 KBytes
[ 4] 1.00-2.00 sec 274 KBytes 2.25 Mbits/sec 1 1.41 KBytes
[ 4] 2.00-3.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes
[ 4] 3.00-4.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes
[ 4] 4.00-5.00 sec 0.00 Bytes 0.00 bits/sec 1 28.3 KBytes
[ 4] 5.00-6.00 sec 423 KBytes 3.47 Mbits/sec 3 41.0 KBytes
[ 4] 6.00-7.00 sec 840 KBytes 6.88 Mbits/sec 0 58.0 KBytes
[ 4] 7.00-8.00 sec 830 KBytes 6.79 Mbits/sec 1 1.41 KBytes
[ 4] 8.00-9.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes
[ 4] 9.00-10.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 3.03 MBytes 2.54 Mbits/sec 7 sender
[ 4] 0.00-10.00 sec 2.88 MBytes 2.41 Mbits/sec receiver
iperf Done.
With this change:
$ sudo iw dev wlp2s0 scan | grep -B3 JJ | grep signal
signal: -14.00 dBm
$ iperf3 -c 192.168.1.254
Connecting to host 192.168.1.254, port 5201
[ 4] local 192.168.1.253 port 59380 connected to 192.168.1.254 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-1.00 sec 4.63 MBytes 38.8 Mbits/sec 0 194 KBytes
[ 4] 1.00-2.00 sec 4.58 MBytes 38.4 Mbits/sec 0 273 KBytes
[ 4] 2.00-3.00 sec 5.05 MBytes 42.3 Mbits/sec 0 332 KBytes
[ 4] 3.00-4.00 sec 4.98 MBytes 41.8 Mbits/sec 0 393 KBytes
[ 4] 4.00-5.00 sec 4.76 MBytes 39.9 Mbits/sec 0 434 KBytes
[ 4] 5.00-6.00 sec 4.85 MBytes 40.7 Mbits/sec 0 434 KBytes
[ 4] 6.00-7.00 sec 3.96 MBytes 33.2 Mbits/sec 0 464 KBytes
[ 4] 7.00-8.00 sec 4.74 MBytes 39.8 Mbits/sec 0 481 KBytes
[ 4] 8.00-9.00 sec 4.22 MBytes 35.4 Mbits/sec 0 508 KBytes
[ 4] 9.00-10.00 sec 4.09 MBytes 34.3 Mbits/sec 0 564 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 45.9 MBytes 38.5 Mbits/sec 0 sender
[ 4] 0.00-10.00 sec 45.0 MBytes 37.7 Mbits/sec receiver
iperf Done.
Signed-off-by: João Paulo Rechi Vita <jprvita@...lessm.com>
---
drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c
index b026e80940a4..86182b917c92 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtcoutsrc.c
@@ -1388,9 +1388,6 @@ bool exhalbtc_bind_bt_coex_withadapter(void *adapter)
ant_num = rtl_get_hwpg_ant_num(rtlpriv);
exhalbtc_set_ant_num(rtlpriv, BT_COEX_ANT_TYPE_PG, ant_num);
- /* set default antenna position to main port */
- btcoexist->board_info.btdm_ant_pos = BTC_ANTENNA_AT_MAIN_PORT;
-
single_ant_path = rtl_get_hwpg_single_ant_path(rtlpriv);
exhalbtc_set_single_ant_path(btcoexist, single_ant_path);
--
2.17.0
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