ath6kl: Add debugfs entry to dump target stats

It would be at <debugfs_root>/ieee80211/phyX/ath6kl/tgt_stats.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

1 files changed, 146 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c
index 12775e80a0f4..5a082c0f34cd 100644
--- a/drivers/net/wireless/ath/ath6kl/debug.c
+++ b/drivers/net/wireless/ath/ath6kl/debug.c
@@ -147,6 +147,149 @@ void dump_cred_dist_stats(struct htc_target *target)
                    target->cred_dist_cntxt->cur_free_credits);
 }
 
+static int ath6kl_debugfs_open(struct inode *inode, struct file *file)
+{
+        file->private_data = inode->i_private;
+        return 0;
+}
+
+static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
+                                   size_t count, loff_t *ppos)
+{
+        struct ath6kl *ar = file->private_data;
+        struct target_stats *tgt_stats = &ar->target_stats;
+        char *buf;
+        unsigned int len = 0, buf_len = 1500;
+        int i;
+        long left;
+        ssize_t ret_cnt;
+
+        buf = kzalloc(buf_len, GFP_KERNEL);
+        if (!buf)
+                return -ENOMEM;
+
+        if (down_interruptible(&ar->sem)) {
+                kfree(buf);
+                return -EBUSY;
+        }
+
+        set_bit(STATS_UPDATE_PEND, &ar->flag);
+
+        if (ath6kl_wmi_get_stats_cmd(ar->wmi)) {
+                up(&ar->sem);
+                kfree(buf);
+                return -EIO;
+        }
+
+        left = wait_event_interruptible_timeout(ar->event_wq,
+                                                !test_bit(STATS_UPDATE_PEND,
+                                                &ar->flag), WMI_TIMEOUT);
+
+        up(&ar->sem);
+
+        if (left <= 0) {
+                kfree(buf);
+                return -ETIMEDOUT;
+        }
+
+        len += scnprintf(buf + len, buf_len - len, "\n");
+        len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                         "Target Tx stats");
+        len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
+                         "=================");
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Ucast packets", tgt_stats->tx_ucast_pkt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Bcast packets", tgt_stats->tx_bcast_pkt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Ucast byte", tgt_stats->tx_ucast_byte);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Bcast byte", tgt_stats->tx_bcast_byte);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Rts success cnt", tgt_stats->tx_rts_success_cnt);
+        for (i = 0; i < 4; i++)
+                len += scnprintf(buf + len, buf_len - len,
+                                 "%18s %d %10llu\n", "PER on ac",
+                                 i, tgt_stats->tx_pkt_per_ac[i]);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Error", tgt_stats->tx_err);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Fail count", tgt_stats->tx_fail_cnt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Retry count", tgt_stats->tx_retry_cnt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Multi retry cnt", tgt_stats->tx_mult_retry_cnt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Rts fail cnt", tgt_stats->tx_rts_fail_cnt);
+        len += scnprintf(buf + len, buf_len - len, "%25s %10llu\n\n",
+                         "TKIP counter measure used",
+                         tgt_stats->tkip_cnter_measures_invoked);
+
+        len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                         "Target Rx stats");
+        len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                         "=================");
+
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Ucast packets", tgt_stats->rx_ucast_pkt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
+                         "Ucast Rate", tgt_stats->rx_ucast_rate);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Bcast packets", tgt_stats->rx_bcast_pkt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Ucast byte", tgt_stats->rx_ucast_byte);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Bcast byte", tgt_stats->rx_bcast_byte);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Fragmented pkt", tgt_stats->rx_frgment_pkt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Error", tgt_stats->rx_err);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "CRC Err", tgt_stats->rx_crc_err);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Key chache miss", tgt_stats->rx_key_cache_miss);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Decrypt Err", tgt_stats->rx_decrypt_err);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Duplicate frame", tgt_stats->rx_dupl_frame);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Tkip Mic failure", tgt_stats->tkip_local_mic_fail);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "TKIP format err", tgt_stats->tkip_fmt_err);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "CCMP format Err", tgt_stats->ccmp_fmt_err);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n\n",
+                         "CCMP Replay Err", tgt_stats->ccmp_replays);
+
+        len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                         "Misc Target stats");
+        len += scnprintf(buf + len, buf_len - len, "%25s\n",
+                         "=================");
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Beacon Miss count", tgt_stats->cs_bmiss_cnt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Num Connects", tgt_stats->cs_connect_cnt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
+                         "Num disconnects", tgt_stats->cs_discon_cnt);
+        len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
+                         "Beacon avg rssi", tgt_stats->cs_ave_beacon_rssi);
+
+        if (len > buf_len)
+                len = buf_len;
+
+        ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+
+        kfree(buf);
+        return ret_cnt;
+}
+
+static const struct file_operations fops_tgt_stats = {
+        .read = read_file_tgt_stats,
+        .open = ath6kl_debugfs_open,
+        .owner = THIS_MODULE,
+        .llseek = default_llseek,
+};
+
 int ath6kl_debug_init(struct ath6kl *ar)
 {
         ar->debugfs_phy = debugfs_create_dir("ath6kl",
@@ -154,7 +297,9 @@ int ath6kl_debug_init(struct ath6kl *ar)
         if (!ar->debugfs_phy)
                 return -ENOMEM;
 
-        /* TODO: Create debugfs file entries for various target/host stats */
+        debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar,
+                            &fops_tgt_stats);
+
         return 0;
 }
 #endif