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>

diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c
index 12775e8..5a082c0 100644 (file)
--- 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