From 85dd28eb9917fb22095aab0cf22eaa351bb3e24d Mon Sep 17 00:00:00 2001 From: Anilkumar Kolli Date: Tue, 4 Sep 2018 12:15:16 +0530 Subject: [PATCH] ath10k: add debugfs support to dump per sta tx stats This patch adds 'tx_stats' in per station debugfs entry. Use this command to dump tx_stats: cat /sys/kernel/debug/ieee80211/phy0/netdev\:wlan0/ stations//tx_stats Signed-off-by: Anilkumar Kolli Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/debugfs_sta.c | 101 ++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/debugfs_sta.c b/drivers/net/wireless/ath/ath10k/debugfs_sta.c index a63c97e..929f2f6 100644 --- a/drivers/net/wireless/ath/ath10k/debugfs_sta.c +++ b/drivers/net/wireless/ath/ath10k/debugfs_sta.c @@ -626,9 +626,105 @@ static const struct file_operations fops_tid_stats_dump = { .llseek = default_llseek, }; +static ssize_t ath10k_dbg_sta_dump_tx_stats(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; + struct ath10k_htt_data_stats *stats; + const char *str_name[ATH10K_STATS_TYPE_MAX] = {"succ", "fail", + "retry", "ampdu"}; + const char *str[ATH10K_COUNTER_TYPE_MAX] = {"bytes", "packets"}; + int len = 0, i, j, k, retval = 0; + const int size = 2 * 4096; + char *buf; + + buf = kzalloc(size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + mutex_lock(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + for (k = 0; k < ATH10K_STATS_TYPE_MAX; k++) { + for (j = 0; j < ATH10K_COUNTER_TYPE_MAX; j++) { + stats = &arsta->tx_stats->stats[k]; + len += scnprintf(buf + len, size - len, "%s_%s\n", + str_name[k], + str[j]); + len += scnprintf(buf + len, size - len, + " VHT MCS %s\n", + str[j]); + for (i = 0; i < ATH10K_VHT_MCS_NUM; i++) + len += scnprintf(buf + len, size - len, + " %llu ", + stats->vht[j][i]); + len += scnprintf(buf + len, size - len, "\n"); + len += scnprintf(buf + len, size - len, " HT MCS %s\n", + str[j]); + for (i = 0; i < ATH10K_HT_MCS_NUM; i++) + len += scnprintf(buf + len, size - len, + " %llu ", stats->ht[j][i]); + len += scnprintf(buf + len, size - len, "\n"); + len += scnprintf(buf + len, size - len, + " BW %s (20,40,80,160 MHz)\n", str[j]); + len += scnprintf(buf + len, size - len, + " %llu %llu %llu %llu\n", + stats->bw[j][0], stats->bw[j][1], + stats->bw[j][2], stats->bw[j][3]); + len += scnprintf(buf + len, size - len, + " NSS %s (1x1,2x2,3x3,4x4)\n", str[j]); + len += scnprintf(buf + len, size - len, + " %llu %llu %llu %llu\n", + stats->nss[j][0], stats->nss[j][1], + stats->nss[j][2], stats->nss[j][3]); + len += scnprintf(buf + len, size - len, + " GI %s (LGI,SGI)\n", + str[j]); + len += scnprintf(buf + len, size - len, " %llu %llu\n", + stats->gi[j][0], stats->gi[j][1]); + len += scnprintf(buf + len, size - len, + " legacy rate %s (1,2 ... Mbps)\n ", + str[j]); + for (i = 0; i < ATH10K_LEGACY_NUM; i++) + len += scnprintf(buf + len, size - len, "%llu ", + stats->legacy[j][i]); + len += scnprintf(buf + len, size - len, "\n"); + } + } + + len += scnprintf(buf + len, size - len, + "\nTX duration\n %llu usecs\n", + arsta->tx_stats->tx_duration); + len += scnprintf(buf + len, size - len, + "BA fails\n %llu\n", arsta->tx_stats->ba_fails); + len += scnprintf(buf + len, size - len, + "ack fails\n %llu\n", arsta->tx_stats->ack_fails); + spin_unlock_bh(&ar->data_lock); + + if (len > size) + len = size; + retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + mutex_unlock(&ar->conf_mutex); + return retval; +} + +static const struct file_operations fops_tx_stats = { + .read = ath10k_dbg_sta_dump_tx_stats, + .open = simple_open, + .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) { + struct ath10k *ar = hw->priv; + debugfs_create_file("aggr_mode", 0644, dir, sta, &fops_aggr_mode); debugfs_create_file("addba", 0200, dir, sta, &fops_addba); debugfs_create_file("addba_resp", 0200, dir, sta, &fops_addba_resp); @@ -637,4 +733,9 @@ void ath10k_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif, &fops_peer_debug_trigger); debugfs_create_file("dump_tid_stats", 0400, dir, sta, &fops_tid_stats_dump); + + if (ath10k_peer_stats_enabled(ar) && + ath10k_debug_is_extd_tx_stats_enabled(ar)) + debugfs_create_file("tx_stats", 0400, dir, sta, + &fops_tx_stats); } -- 2.7.4