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ath6kl: Add debugfs entry to dump target stats
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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>
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Vasanthakumar Thiagarajan authored and Kalle Valo committed Aug 31, 2011
1 parent d999ba3 commit 03f68a9
Showing 1 changed file with 146 additions and 1 deletion.
147 changes: 146 additions & 1 deletion drivers/net/wireless/ath/ath6kl/debug.c
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Original file line number Diff line number Diff line change
Expand Up @@ -147,14 +147,159 @@ 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",
ar->wdev->wiphy->debugfsdir);
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

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