diff mbox series

[v2,1/1] wilc1000: Improve WILC TX performance when power_save is off

Message ID 20211210203016.3680425-2-davidm@egauge.net
State Superseded
Headers show
Series wilc1000: Improve WILC TX performance when power_save is off | expand

Commit Message

David Mosberger-Tang Dec. 10, 2021, 8:30 p.m. UTC
The wakeup and sleep commands need to be sent to the WILC chip only
when it is in power save mode (PSM, as controlled by "iw dev wlan0 set
power_save on/off").  The commands are relatively costly, so it pays
to skip them when possible.

iperf3 without this patch (no significant different with PSM on/off):
  TX   0.00-120.01 sec   140 MBytes  9.82 Mbits/sec
  RX   0.00-120.69 sec   283 MBytes  19.6 Mbits/sec

with this patch applied:

PSM off (TX is 46% improved, RX slightly improved; may not be significant):
  TX   0.00-120.00 sec   206 MBytes  14.4 Mbits/sec
  RX   0.00-120.48 sec   322 MBytes  22.4 Mbits/sec

PSM on (no significant change):
  TX   0.00-120.00 sec   140 MBytes  9.78 Mbits/sec
  RX   0.00-120.08 sec   257 MBytes  18.0 Mbits/sec

Signed-off-by: David Mosberger-Tang <davidm@egauge.net>
---
 drivers/net/wireless/microchip/wilc1000/hif.c    | 3 +++
 drivers/net/wireless/microchip/wilc1000/netdev.h | 1 +
 drivers/net/wireless/microchip/wilc1000/wlan.c   | 4 ++--
 3 files changed, 6 insertions(+), 2 deletions(-)

Comments

Kalle Valo Dec. 16, 2021, 8:30 a.m. UTC | #1
David Mosberger-Tang <davidm@egauge.net> wrote:

> The wakeup and sleep commands need to be sent to the WILC chip only
> when it is in power save mode (PSM, as controlled by "iw dev wlan0 set
> power_save on/off").  The commands are relatively costly, so it pays
> to skip them when possible.
> 
> iperf3 without this patch (no significant different with PSM on/off):
>   TX   0.00-120.01 sec   140 MBytes  9.82 Mbits/sec
>   RX   0.00-120.69 sec   283 MBytes  19.6 Mbits/sec
> 
> with this patch applied:
> 
> PSM off (TX is 46% improved, RX slightly improved; may not be significant):
>   TX   0.00-120.00 sec   206 MBytes  14.4 Mbits/sec
>   RX   0.00-120.48 sec   322 MBytes  22.4 Mbits/sec
> 
> PSM on (no significant change):
>   TX   0.00-120.00 sec   140 MBytes  9.78 Mbits/sec
>   RX   0.00-120.08 sec   257 MBytes  18.0 Mbits/sec
> 
> Signed-off-by: David Mosberger-Tang <davidm@egauge.net>

Patch applied to wireless-drivers-next.git, thanks.

b530d5f39c2f wilc1000: Improve WILC TX performance when power_save is off
diff mbox series

Patch

diff --git a/drivers/net/wireless/microchip/wilc1000/hif.c b/drivers/net/wireless/microchip/wilc1000/hif.c
index e69b9c7f3d31..29a42bc47017 100644
--- a/drivers/net/wireless/microchip/wilc1000/hif.c
+++ b/drivers/net/wireless/microchip/wilc1000/hif.c
@@ -1929,6 +1929,7 @@  int wilc_edit_station(struct wilc_vif *vif, const u8 *mac,
 
 int wilc_set_power_mgmt(struct wilc_vif *vif, bool enabled, u32 timeout)
 {
+	struct wilc *wilc = vif->wilc;
 	struct wid wid;
 	int result;
 	s8 power_mode;
@@ -1944,6 +1945,8 @@  int wilc_set_power_mgmt(struct wilc_vif *vif, bool enabled, u32 timeout)
 	result = wilc_send_config_pkt(vif, WILC_SET_CFG, &wid, 1);
 	if (result)
 		netdev_err(vif->ndev, "Failed to send power management\n");
+	else
+		wilc->power_save_mode = enabled;
 
 	return result;
 }
diff --git a/drivers/net/wireless/microchip/wilc1000/netdev.h b/drivers/net/wireless/microchip/wilc1000/netdev.h
index b9a88b3e322f..6c0e634d0249 100644
--- a/drivers/net/wireless/microchip/wilc1000/netdev.h
+++ b/drivers/net/wireless/microchip/wilc1000/netdev.h
@@ -212,6 +212,7 @@  struct wilc {
 	s8 mac_status;
 	struct clk *rtc_clk;
 	bool initialized;
+	bool power_save_mode;
 	int dev_irq_num;
 	int close;
 	u8 vif_num;
diff --git a/drivers/net/wireless/microchip/wilc1000/wlan.c b/drivers/net/wireless/microchip/wilc1000/wlan.c
index 82566544419a..c63219fc634b 100644
--- a/drivers/net/wireless/microchip/wilc1000/wlan.c
+++ b/drivers/net/wireless/microchip/wilc1000/wlan.c
@@ -20,13 +20,13 @@  static inline bool is_wilc1000(u32 id)
 static inline void acquire_bus(struct wilc *wilc, enum bus_acquire acquire)
 {
 	mutex_lock(&wilc->hif_cs);
-	if (acquire == WILC_BUS_ACQUIRE_AND_WAKEUP)
+	if (acquire == WILC_BUS_ACQUIRE_AND_WAKEUP && wilc->power_save_mode)
 		chip_wakeup(wilc);
 }
 
 static inline void release_bus(struct wilc *wilc, enum bus_release release)
 {
-	if (release == WILC_BUS_RELEASE_ALLOW_SLEEP)
+	if (release == WILC_BUS_RELEASE_ALLOW_SLEEP && wilc->power_save_mode)
 		chip_allow_sleep(wilc);
 	mutex_unlock(&wilc->hif_cs);
 }