ath10k: add debugfs support to get per peer tids log via tracing

This patch provides support to get per peer tids log.

echo 1 > /sys/kernel/debug/ieee80211/phyX/netdev\:wlanX/stations/
XX:XX/peer_debug_trigger

These logs will be the part of FWLOGS which we collect the logs
via tracing interface. Here we will get the peer tigd logs only
once(not repeatedly) when we write 1 to the debugfs file.

Signed-off-by: Maharaja Kennadyrajan <c_mkenna@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath10k/debugfs_sta.c b/drivers/net/wireless/ath/ath10k/debugfs_sta.c
index fce6f8137d3330f56b0f5a79128cb552b94c55fa..7353e7ea88f13f3e804213f1aa2ab8f34e41557a 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/debugfs_sta.c
+++ b/drivers/net/wireless/ath/ath10k/debugfs_sta.c
@@ -306,6 +306,69 @@ static const struct file_operations fops_delba = {
        .llseek = default_llseek,
 };
 
+static ssize_t ath10k_dbg_sta_read_peer_debug_trigger(struct file *file,
+                                                     char __user *user_buf,
+                                                     size_t count,
+                                                     loff_t *ppos)
+{
+       struct ieee80211_sta *sta = file->private_data;
+       struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
+       struct ath10k *ar = arsta->arvif->ar;
+       char buf[8];
+       int len = 0;
+
+       mutex_lock(&ar->conf_mutex);
+       len = scnprintf(buf, sizeof(buf) - len,
+                       "Write 1 to once trigger the debug logs\n");
+       mutex_unlock(&ar->conf_mutex);
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t
+ath10k_dbg_sta_write_peer_debug_trigger(struct file *file,
+                                       const char __user *user_buf,
+                                       size_t count, loff_t *ppos)
+{
+       struct ieee80211_sta *sta = file->private_data;
+       struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
+       struct ath10k *ar = arsta->arvif->ar;
+       u8 peer_debug_trigger;
+       int ret;
+
+       if (kstrtou8_from_user(user_buf, count, 0, &peer_debug_trigger))
+               return -EINVAL;
+
+       if (peer_debug_trigger != 1)
+               return -EINVAL;
+
+       mutex_lock(&ar->conf_mutex);
+
+       if (ar->state != ATH10K_STATE_ON) {
+               ret = -ENETDOWN;
+               goto out;
+       }
+
+       ret = ath10k_wmi_peer_set_param(ar, arsta->arvif->vdev_id, sta->addr,
+                                       WMI_PEER_DEBUG, peer_debug_trigger);
+       if (ret) {
+               ath10k_warn(ar, "failed to set param to trigger peer tid logs for station ret: %d\n",
+                           ret);
+               goto out;
+       }
+out:
+       mutex_unlock(&ar->conf_mutex);
+       return count;
+}
+
+static const struct file_operations fops_peer_debug_trigger = {
+       .open = simple_open,
+       .read = ath10k_dbg_sta_read_peer_debug_trigger,
+       .write = ath10k_dbg_sta_write_peer_debug_trigger,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
 void ath10k_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
                            struct ieee80211_sta *sta, struct dentry *dir)
 {
@@ -314,4 +377,6 @@ void ath10k_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
        debugfs_create_file("addba", S_IWUSR, dir, sta, &fops_addba);
        debugfs_create_file("addba_resp", S_IWUSR, dir, sta, &fops_addba_resp);
        debugfs_create_file("delba", S_IWUSR, dir, sta, &fops_delba);
+       debugfs_create_file("peer_debug_trigger", 0600, dir, sta,
+                           &fops_peer_debug_trigger);
 }

diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h
index 1333cbe48693e85323c35cc54780f2aa531f749e..cec713c999316922e95fa02525a5ede3ba6c17dc 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/wmi.h
+++ b/drivers/net/wireless/ath/ath10k/wmi.h
@@ -5811,6 +5811,7 @@ enum wmi_peer_param {
        WMI_PEER_CHAN_WIDTH = 0x4,
        WMI_PEER_NSS        = 0x5,
        WMI_PEER_USE_4ADDR  = 0x6,
+       WMI_PEER_DEBUG      = 0xa,
        WMI_PEER_DUMMY_VAR  = 0xff, /* dummy parameter for STA PS workaround */
 };