From: Jérôme Pouiller <jerome.pouiller@xxxxxxxxxx>
In some advanced usage or debug scenarios, it could interesting to
change the value of ps_timeout or eventually to force use of PS-Poll
frames.
The wext API (used by iwconfig) provide a way to change ps_timeout.
However, this API is obsolete and it seems a little weird to use (it
seems it does apply the change, so the user have to disable then
re-enable de power save)
On side of nl80211, there is no way to change the ps_timeout.
This patch provides a file in debugfs to change the value of ps_timeout.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@xxxxxxxxxx>
---
drivers/staging/wfx/debug.c | 23 +++++++++++++++++++++++
drivers/staging/wfx/main.c | 1 +
drivers/staging/wfx/sta.c | 10 +++++++---
drivers/staging/wfx/sta.h | 1 +
drivers/staging/wfx/wfx.h | 1 +
5 files changed, 33 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/wfx/debug.c b/drivers/staging/wfx/debug.c
index 10d649985696a..3f1712b7c919d 100644
--- a/drivers/staging/wfx/debug.c
+++ b/drivers/staging/wfx/debug.c
@@ -334,6 +334,28 @@ static const struct file_operations wfx_send_hif_msg_fops = {
.read = wfx_send_hif_msg_read,
};
+static int wfx_ps_timeout_set(void *data, u64 val)
+{
+ struct wfx_dev *wdev = (struct wfx_dev *)data;
+ struct wfx_vif *wvif;
+
+ wdev->force_ps_timeout = val;
+ wvif = NULL;
+ while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
+ wfx_update_pm(wvif);
+ return 0;
+}
+
+static int wfx_ps_timeout_get(void *data, u64 *val)
+{
+ struct wfx_dev *wdev = (struct wfx_dev *)data;
+
+ *val = wdev->force_ps_timeout;
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(wfx_ps_timeout_fops, wfx_ps_timeout_get, wfx_ps_timeout_set, "%lld\n");
+
int wfx_debug_init(struct wfx_dev *wdev)
{
struct dentry *d;
@@ -348,6 +370,7 @@ int wfx_debug_init(struct wfx_dev *wdev)
&wfx_burn_slk_key_fops);
debugfs_create_file("send_hif_msg", 0600, d, wdev,
&wfx_send_hif_msg_fops);
+ debugfs_create_file("ps_timeout", 0600, d, wdev, &wfx_ps_timeout_fops);
return 0;
}
diff --git a/drivers/staging/wfx/main.c b/drivers/staging/wfx/main.c
index 80e4474cc3314..62e3634556ec0 100644
--- a/drivers/staging/wfx/main.c
+++ b/drivers/staging/wfx/main.c
@@ -352,6 +352,7 @@ struct wfx_dev *wfx_init_common(struct device *dev,
skb_queue_head_init(&wdev->tx_pending);
init_waitqueue_head(&wdev->tx_dequeue);
wfx_init_hif_cmd(&wdev->hif_cmd);
+ wdev->force_ps_timeout = -1;
if (devm_add_action_or_reset(dev, wfx_free_common, wdev))
return NULL;
diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index 2c0ab51fc92da..fdf4f48ddc2ce 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -217,20 +217,24 @@ static int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps)
// are differents.
if (enable_ps)
*enable_ps = true;
- if (wvif->bss_not_support_ps_poll)
+ if (wvif->wdev->force_ps_timeout > -1)
+ return wvif->wdev->force_ps_timeout;
+ else if (wvif->bss_not_support_ps_poll)
return 30;
else
return 0;
}
if (enable_ps)
*enable_ps = wvif->vif->bss_conf.ps;
- if (wvif->vif->bss_conf.assoc && wvif->vif->bss_conf.ps)
+ if (wvif->wdev->force_ps_timeout > -1)
+ return wvif->wdev->force_ps_timeout;
+ else if (wvif->vif->bss_conf.assoc && wvif->vif->bss_conf.ps)
return conf->dynamic_ps_timeout;
else
return -1;
}
-static int wfx_update_pm(struct wfx_vif *wvif)
+int wfx_update_pm(struct wfx_vif *wvif)
{
int ps_timeout;
bool ps;
diff --git a/drivers/staging/wfx/sta.h b/drivers/staging/wfx/sta.h
index 43808cef4785c..6b15a64ac9e28 100644
--- a/drivers/staging/wfx/sta.h
+++ b/drivers/staging/wfx/sta.h
@@ -66,6 +66,7 @@ void wfx_cooling_timeout_work(struct work_struct *work);
void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd);
void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd cmd);
void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi);
+int wfx_update_pm(struct wfx_vif *wvif);
// Other Helpers
void wfx_reset(struct wfx_vif *wvif);
diff --git a/drivers/staging/wfx/wfx.h b/drivers/staging/wfx/wfx.h
index 0c44b733ef6fe..477c08fc713fa 100644
--- a/drivers/staging/wfx/wfx.h
+++ b/drivers/staging/wfx/wfx.h
@@ -59,6 +59,7 @@ struct wfx_dev {
struct mutex rx_stats_lock;
struct hif_tx_power_loop_info tx_power_loop_info;
struct mutex tx_power_loop_info_lock;
+ int force_ps_timeout;
};
struct wfx_vif {
--
2.27.0
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