[PATCH v5] ath10k: Enable debugfs provision to enable Peer Stats feature
Mohammed Shafi Shajakhan
mohammed at qti.qualcomm.com
Fri Feb 26 07:49:30 PST 2016
From: Mohammed Shafi Shajakhan <mohammed at qti.qualcomm.com>
Provide a debugfs entry to enable/ disable Peer Stats feature.
Peer Stats feature is for developers/users who are more interested
in studying in Rx/Tx stats with multiple clients connected, hence
disable this by default. Enabling this feature by default results
in unneccessary processing of Peer Stats event for every 500ms
and updating peer_stats list (allocating memory) and cleaning it up
ifexceeds the higher limit and this can be an unnecessary overhead
during long run stress testing.
Signed-off-by: Mohammed Shafi Shajakhan <mohammed at qti.qualcomm.com>
---
Dependencies:-
[PATCH] ath10k: Reduce number of peers to support peer stats feature
(in upstream review)
ath10k: Fix updating peer stats rx duration (in upstream review)
ath10k: Fix pointless update of peer stats list (in upstream review)
drivers/net/wireless/ath/ath10k/core.c | 2 +-
drivers/net/wireless/ath/ath10k/core.h | 12 +++++
drivers/net/wireless/ath/ath10k/debug.c | 80 +++++++++++++++++++++++++++++--
drivers/net/wireless/ath/ath10k/mac.c | 2 +-
drivers/net/wireless/ath/ath10k/wmi.c | 12 ++---
5 files changed, 94 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index c84c2d3..c4c31b2 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -1509,7 +1509,7 @@ static int ath10k_core_init_firmware_features(struct ath10k *ar)
case ATH10K_FW_WMI_OP_VERSION_10_1:
case ATH10K_FW_WMI_OP_VERSION_10_2:
case ATH10K_FW_WMI_OP_VERSION_10_2_4:
- if (test_bit(WMI_SERVICE_PEER_STATS, ar->wmi.svc_map)) {
+ if (ath10k_peer_stats_enabled(ar)) {
ar->max_num_peers = TARGET_10X_TX_STATS_NUM_PEERS;
ar->max_num_stations = TARGET_10X_TX_STATS_NUM_STATIONS;
} else {
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index a62b62a..cebf22c 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -549,6 +549,9 @@ enum ath10k_dev_flags {
/* Bluetooth coexistance enabled */
ATH10K_FLAG_BTCOEX,
+
+ /* Per Station statistics service */
+ ATH10K_FLAG_PEER_STATS,
};
enum ath10k_cal_mode {
@@ -876,6 +879,15 @@ struct ath10k {
u8 drv_priv[0] __aligned(sizeof(void *));
};
+static inline bool ath10k_peer_stats_enabled(struct ath10k *ar)
+{
+ if (test_bit(ATH10K_FLAG_PEER_STATS, &ar->dev_flags) &&
+ test_bit(WMI_SERVICE_PEER_STATS, ar->wmi.svc_map))
+ return true;
+
+ return false;
+}
+
struct ath10k *ath10k_core_create(size_t priv_size, struct device *dev,
enum ath10k_bus bus,
enum ath10k_hw_rev hw_rev,
diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
index 06581fa..406e8bc 100644
--- a/drivers/net/wireless/ath/ath10k/debug.c
+++ b/drivers/net/wireless/ath/ath10k/debug.c
@@ -319,7 +319,7 @@ static void ath10k_debug_fw_stats_reset(struct ath10k *ar)
void ath10k_debug_fw_stats_process(struct ath10k *ar, struct sk_buff *skb)
{
struct ath10k_fw_stats stats = {};
- bool is_start, is_started, is_end, peer_stats_svc;
+ bool is_start, is_started, is_end;
size_t num_peers;
size_t num_vdevs;
int ret;
@@ -346,13 +346,11 @@ void ath10k_debug_fw_stats_process(struct ath10k *ar, struct sk_buff *skb)
* b) consume stat update events until another one with pdev stats is
* delivered which is treated as end-of-data and is itself discarded
*/
-
- peer_stats_svc = test_bit(WMI_SERVICE_PEER_STATS, ar->wmi.svc_map);
- if (peer_stats_svc)
+ if (ath10k_peer_stats_enabled(ar))
ath10k_sta_update_rx_duration(ar, &stats.peers);
if (ar->debug.fw_stats_done) {
- if (!peer_stats_svc)
+ if (!ath10k_peer_stats_enabled(ar))
ath10k_warn(ar, "received unsolicited stats update event\n");
goto free;
@@ -2169,6 +2167,73 @@ static const struct file_operations fops_btcoex = {
.open = simple_open
};
+static ssize_t ath10k_write_peer_stats(struct file *file,
+ const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct ath10k *ar = file->private_data;
+ char buf[32];
+ size_t buf_size;
+ int ret = 0;
+ bool val;
+
+ buf_size = min(count, (sizeof(buf) - 1));
+ if (copy_from_user(buf, ubuf, buf_size))
+ return -EFAULT;
+
+ buf[buf_size] = '\0';
+
+ if (strtobool(buf, &val) != 0)
+ return -EINVAL;
+
+ mutex_lock(&ar->conf_mutex);
+
+ if (ar->state != ATH10K_STATE_ON &&
+ ar->state != ATH10K_STATE_RESTARTED) {
+ ret = -ENETDOWN;
+ goto exit;
+ }
+
+ if (!(test_bit(ATH10K_FLAG_PEER_STATS, &ar->dev_flags) ^ val))
+ goto exit;
+
+ if (val)
+ set_bit(ATH10K_FLAG_PEER_STATS, &ar->dev_flags);
+ else
+ clear_bit(ATH10K_FLAG_PEER_STATS, &ar->dev_flags);
+
+ ath10k_info(ar, "restarting firmware due to Peer stats change");
+
+ queue_work(ar->workqueue, &ar->restart_work);
+ ret = count;
+
+exit:
+ mutex_unlock(&ar->conf_mutex);
+ return ret;
+}
+
+static ssize_t ath10k_read_peer_stats(struct file *file, char __user *ubuf,
+ size_t count, loff_t *ppos)
+
+{
+ char buf[32];
+ struct ath10k *ar = file->private_data;
+ int len = 0;
+
+ mutex_lock(&ar->conf_mutex);
+ len = scnprintf(buf, sizeof(buf) - len, "%d\n",
+ test_bit(ATH10K_FLAG_PEER_STATS, &ar->dev_flags));
+ mutex_unlock(&ar->conf_mutex);
+
+ return simple_read_from_buffer(ubuf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_peer_stats = {
+ .read = ath10k_read_peer_stats,
+ .write = ath10k_write_peer_stats,
+ .open = simple_open
+};
+
static ssize_t ath10k_debug_fw_checksums_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
@@ -2335,6 +2400,11 @@ int ath10k_debug_register(struct ath10k *ar)
debugfs_create_file("btcoex", S_IRUGO | S_IWUSR,
ar->debug.debugfs_phy, ar, &fops_btcoex);
+ if (test_bit(WMI_SERVICE_PEER_STATS, ar->wmi.svc_map))
+ debugfs_create_file("peer_stats", S_IRUGO | S_IWUSR,
+ ar->debug.debugfs_phy, ar,
+ &fops_peer_stats);
+
debugfs_create_file("fw_checksums", S_IRUSR,
ar->debug.debugfs_phy, ar, &fops_fw_checksums);
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 96e2f8a..d5ef201 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -4100,7 +4100,7 @@ static int ath10k_start(struct ieee80211_hw *hw)
ar->ani_enabled = true;
- if (test_bit(WMI_SERVICE_PEER_STATS, ar->wmi.svc_map)) {
+ if (ath10k_peer_stats_enabled(ar)) {
param = ar->wmi.pdev_param->peer_stats_update_period;
ret = ath10k_wmi_pdev_set_param(ar, param,
PEER_DEFAULT_STATS_UPDATE_PERIOD);
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 7026138..ef390ae 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -2865,11 +2865,8 @@ static int ath10k_wmi_10_2_4_op_pull_fw_stats(struct ath10k *ar,
const struct wmi_10_2_4_ext_peer_stats *src;
struct ath10k_fw_stats_peer *dst;
int stats_len;
- bool ext_peer_stats_support;
- ext_peer_stats_support = test_bit(WMI_SERVICE_PEER_STATS,
- ar->wmi.svc_map);
- if (ext_peer_stats_support)
+ if (test_bit(WMI_SERVICE_PEER_STATS, ar->wmi.svc_map))
stats_len = sizeof(struct wmi_10_2_4_ext_peer_stats);
else
stats_len = sizeof(struct wmi_10_2_4_peer_stats);
@@ -2886,7 +2883,7 @@ static int ath10k_wmi_10_2_4_op_pull_fw_stats(struct ath10k *ar,
dst->peer_rx_rate = __le32_to_cpu(src->common.peer_rx_rate);
- if (ext_peer_stats_support)
+ if (ath10k_peer_stats_enabled(ar))
dst->rx_duration = __le32_to_cpu(src->rx_duration);
/* FIXME: expose 10.2 specific values */
@@ -5517,7 +5514,8 @@ static struct sk_buff *ath10k_wmi_10_2_op_gen_init(struct ath10k *ar)
config.num_vdevs = __cpu_to_le32(TARGET_10X_NUM_VDEVS);
config.num_peer_keys = __cpu_to_le32(TARGET_10X_NUM_PEER_KEYS);
- if (test_bit(WMI_SERVICE_PEER_STATS, ar->wmi.svc_map)) {
+
+ if (ath10k_peer_stats_enabled(ar)) {
config.num_peers = __cpu_to_le32(TARGET_10X_TX_STATS_NUM_PEERS);
config.num_tids = __cpu_to_le32(TARGET_10X_TX_STATS_NUM_TIDS);
} else {
@@ -5579,7 +5577,7 @@ static struct sk_buff *ath10k_wmi_10_2_op_gen_init(struct ath10k *ar)
test_bit(WMI_SERVICE_COEX_GPIO, ar->wmi.svc_map))
features |= WMI_10_2_COEX_GPIO;
- if (test_bit(WMI_SERVICE_PEER_STATS, ar->wmi.svc_map))
+ if (ath10k_peer_stats_enabled(ar))
features |= WMI_10_2_PEER_STATS;
cmd->resource_config.feature_mask = __cpu_to_le32(features);
--
1.7.9.5
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