From ee8b08a1be82edca6cfc3cb7e86f674e0ede9de2 Mon Sep 17 00:00:00 2001 From: Maharaja Kennadyrajan Date: Thu, 2 Feb 2017 08:32:19 +0200 Subject: [PATCH] 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 Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/debugfs_sta.c | 65 +++++++++++++++++++ drivers/net/wireless/ath/ath10k/wmi.h | 1 + 2 files changed, 66 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/debugfs_sta.c b/drivers/net/wireless/ath/ath10k/debugfs_sta.c index fce6f8137d33..7353e7ea88f1 100644 --- 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 1333cbe48693..cec713c99931 100644 --- 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 */ }; -- 2.20.1