From 03f68a95e5763faf7b95993b3407fb816c200893 Mon Sep 17 00:00:00 2001 From: Vasanthakumar Thiagarajan Date: Fri, 26 Aug 2011 13:06:32 +0530 Subject: [PATCH] ath6kl: Add debugfs entry to dump target stats It would be at /ieee80211/phyX/ath6kl/tgt_stats. Signed-off-by: Vasanthakumar Thiagarajan Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath6kl/debug.c | 147 +++++++++++++++++++++++- 1 file changed, 146 insertions(+), 1 deletion(-) 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