diff options
author | Felix Fietkau <nbd@openwrt.org> | 2010-10-13 14:43:26 (GMT) |
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committer | John W. Linville <linville@tuxdriver.com> | 2010-10-15 19:48:44 (GMT) |
commit | 772d5515635fef5bc7a9d0efee785b58b0181ee5 (patch) | |
tree | ab01946e53486d79b831c83456af71d8ab495b63 /drivers/net/wireless/ath/ath9k/rc.c | |
parent | 88eac2dad876a58b9c6a4c4805c3fc27b02c048f (diff) | |
download | linux-fsl-qoriq-772d5515635fef5bc7a9d0efee785b58b0181ee5.tar.xz |
ath9k: make rate control debugfs stats per station
Move them to the same debugfs file that the other rc modules use.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/rc.c')
-rw-r--r-- | drivers/net/wireless/ath/ath9k/rc.c | 115 |
1 files changed, 113 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c index abebf24..5db3a12 100644 --- a/drivers/net/wireless/ath/ath9k/rc.c +++ b/drivers/net/wireless/ath/ath9k/rc.c @@ -1026,6 +1026,16 @@ static bool ath_rc_update_per(struct ath_softc *sc, return state_change; } +static void ath_debug_stat_retries(struct ath_rate_priv *rc, int rix, + int xretries, int retries, u8 per) +{ + struct ath_rc_stats *stats = &rc->rcstats[rix]; + + stats->xretries += xretries; + stats->retries += retries; + stats->per = per; +} + /* Update PER, RSSI and whatever else that the code thinks it is doing. If you can make sense of all this, you really need to go out more. */ @@ -1098,7 +1108,7 @@ static void ath_rc_update_ht(struct ath_softc *sc, ath_rc_priv->per_down_time = now_msec; } - ath_debug_stat_retries(sc, tx_rate, xretries, retries, + ath_debug_stat_retries(ath_rc_priv, tx_rate, xretries, retries, ath_rc_priv->per[tx_rate]); } @@ -1294,6 +1304,7 @@ static void ath_rc_init(struct ath_softc *sc, ath_rc_sort_validrates(rate_table, ath_rc_priv); ath_rc_priv->rate_max_phy = ath_rc_priv->valid_rate_index[k-4]; sc->cur_rate_table = rate_table; + ath_rc_priv->rate_table = rate_table; ath_print(common, ATH_DBG_CONFIG, "RC Initialized with capabilities: 0x%x\n", @@ -1340,6 +1351,15 @@ static bool ath_tx_aggr_check(struct ath_softc *sc, struct ath_node *an, /* mac80211 Rate Control callbacks */ /***********************************/ +static void ath_debug_stat_rc(struct ath_rate_priv *rc, int final_rate) +{ + struct ath_rc_stats *stats; + + stats = &rc->rcstats[final_rate]; + stats->success++; +} + + static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, struct ieee80211_sta *sta, void *priv_sta, struct sk_buff *skb) @@ -1419,7 +1439,7 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, } } - ath_debug_stat_rc(sc, ath_rc_get_rateindex(sc->cur_rate_table, + ath_debug_stat_rc(ath_rc_priv, ath_rc_get_rateindex(sc->cur_rate_table, &tx_info->status.rates[final_ts_idx])); } @@ -1521,6 +1541,94 @@ static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband, } } +#ifdef CONFIG_ATH9K_DEBUGFS + +static int ath9k_debugfs_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +static ssize_t read_file_rcstat(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath_rate_priv *rc = file->private_data; + char *buf; + unsigned int len = 0, max; + int i = 0; + ssize_t retval; + + if (rc->rate_table == NULL) + return 0; + + max = 80 + rc->rate_table->rate_cnt * 1024 + 1; + buf = kmalloc(max, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + + len += sprintf(buf, "%6s %6s %6s " + "%10s %10s %10s %10s\n", + "HT", "MCS", "Rate", + "Success", "Retries", "XRetries", "PER"); + + for (i = 0; i < rc->rate_table->rate_cnt; i++) { + u32 ratekbps = rc->rate_table->info[i].ratekbps; + struct ath_rc_stats *stats = &rc->rcstats[i]; + char mcs[5]; + char htmode[5]; + int used_mcs = 0, used_htmode = 0; + + if (WLAN_RC_PHY_HT(rc->rate_table->info[i].phy)) { + used_mcs = snprintf(mcs, 5, "%d", + rc->rate_table->info[i].ratecode); + + if (WLAN_RC_PHY_40(rc->rate_table->info[i].phy)) + used_htmode = snprintf(htmode, 5, "HT40"); + else if (WLAN_RC_PHY_20(rc->rate_table->info[i].phy)) + used_htmode = snprintf(htmode, 5, "HT20"); + else + used_htmode = snprintf(htmode, 5, "????"); + } + + mcs[used_mcs] = '\0'; + htmode[used_htmode] = '\0'; + + len += snprintf(buf + len, max - len, + "%6s %6s %3u.%d: " + "%10u %10u %10u %10u\n", + htmode, + mcs, + ratekbps / 1000, + (ratekbps % 1000) / 100, + stats->success, + stats->retries, + stats->xretries, + stats->per); + } + + if (len > max) + len = max; + + retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + return retval; +} + +static const struct file_operations fops_rcstat = { + .read = read_file_rcstat, + .open = ath9k_debugfs_open, + .owner = THIS_MODULE +}; + +static void ath_rate_add_sta_debugfs(void *priv, void *priv_sta, + struct dentry *dir) +{ + struct ath_rate_priv *rc = priv_sta; + debugfs_create_file("rc_stats", S_IRUGO, dir, rc, &fops_rcstat); +} + +#endif /* CONFIG_ATH9K_DEBUGFS */ + static void *ath_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) { struct ath_wiphy *aphy = hw->priv; @@ -1567,6 +1675,9 @@ static struct rate_control_ops ath_rate_ops = { .free = ath_rate_free, .alloc_sta = ath_rate_alloc_sta, .free_sta = ath_rate_free_sta, +#ifdef CONFIG_ATH9K_DEBUGFS + .add_sta_debugfs = ath_rate_add_sta_debugfs, +#endif }; int ath_rate_control_register(void) |