[linux-2.6-block.git] / drivers / net / wireless / ath / ath9k / debug_sta.c

/*
 * Copyright (c) 2013 Qualcomm Atheros, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "ath9k.h"

/*************/
/* node_aggr */
/*************/

static ssize_t read_file_node_aggr(struct file *file, char __user *user_buf,
				   size_t count, loff_t *ppos)
{
	struct ath_node *an = file->private_data;
	struct ath_softc *sc = an->sc;
	struct ath_atx_tid *tid;
	struct ath_txq *txq;
	u32 len = 0, size = 4096;
	char *buf;
	size_t retval;
	int tidno;

	buf = kzalloc(size, GFP_KERNEL);
	if (buf == NULL)
		return -ENOMEM;

	if (!an->sta->ht_cap.ht_supported) {
		len = scnprintf(buf, size, "%s\n",
				"HT not supported");
		goto exit;
	}

	len = scnprintf(buf, size, "Max-AMPDU: %d\n",
			an->maxampdu);
	len += scnprintf(buf + len, size - len, "MPDU Density: %d\n\n",
			 an->mpdudensity);

	len += scnprintf(buf + len, size - len,
			 "\n%3s%11s%10s%10s%10s%10s%9s%6s%8s\n",
			 "TID", "SEQ_START", "SEQ_NEXT", "BAW_SIZE",
			 "BAW_HEAD", "BAW_TAIL", "BAR_IDX", "SCHED", "PAUSED");

	for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
		tid = ath_node_to_tid(an, tidno);
		txq = tid->txq;
		ath_txq_lock(sc, txq);
		if (tid->active) {
			len += scnprintf(buf + len, size - len,
					 "%3d%11d%10d%10d%10d%10d%9d%6d\n",
					 tid->tidno,
					 tid->seq_start,
					 tid->seq_next,
					 tid->baw_size,
					 tid->baw_head,
					 tid->baw_tail,
					 tid->bar_index,
					 !list_empty(&tid->list));
		}
		ath_txq_unlock(sc, txq);
	}
exit:
	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
	kfree(buf);

	return retval;
}

static const struct file_operations fops_node_aggr = {
	.read = read_file_node_aggr,
	.open = simple_open,
	.owner = THIS_MODULE,
	.llseek = default_llseek,
};

/*************/
/* node_recv */
/*************/

void ath_debug_rate_stats(struct ath_softc *sc,
			  struct ath_rx_status *rs,
			  struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
	struct ath_hw *ah = sc->sc_ah;
	struct ieee80211_rx_status *rxs;
	struct ath_rx_rate_stats *rstats;
	struct ieee80211_sta *sta;
	struct ath_node *an;

	if (!ieee80211_is_data(hdr->frame_control))
		return;

	rcu_read_lock();

	sta = ieee80211_find_sta_by_ifaddr(sc->hw, hdr->addr2, NULL);
	if (!sta)
		goto exit;

	an = (struct ath_node *) sta->drv_priv;
	rstats = &an->rx_rate_stats;
	rxs = IEEE80211_SKB_RXCB(skb);

	if (IS_HT_RATE(rs->rs_rate)) {
		if (rxs->rate_idx >= ARRAY_SIZE(rstats->ht_stats))
			goto exit;

		if ((rxs->bw == RATE_INFO_BW_40))
			rstats->ht_stats[rxs->rate_idx].ht40_cnt++;
		else
			rstats->ht_stats[rxs->rate_idx].ht20_cnt++;

		if (rxs->enc_flags & RX_ENC_FLAG_SHORT_GI)
			rstats->ht_stats[rxs->rate_idx].sgi_cnt++;
		else
			rstats->ht_stats[rxs->rate_idx].lgi_cnt++;

		goto exit;
	}

	if (IS_CCK_RATE(rs->rs_rate)) {
		if (rxs->enc_flags & RX_ENC_FLAG_SHORTPRE)
			rstats->cck_stats[rxs->rate_idx].cck_sp_cnt++;
		else
			rstats->cck_stats[rxs->rate_idx].cck_lp_cnt++;

		goto exit;
	}

	if (IS_OFDM_RATE(rs->rs_rate)) {
		if (ah->curchan->chan->band == NL80211_BAND_2GHZ)
			rstats->ofdm_stats[rxs->rate_idx - 4].ofdm_cnt++;
		else
			rstats->ofdm_stats[rxs->rate_idx].ofdm_cnt++;
	}
exit:
	rcu_read_unlock();
}

#define PRINT_CCK_RATE(str, i, sp)					\
	do {								\
		len += scnprintf(buf + len, size - len,			\
			 "%11s : %10u\n",				\
			 str,						\
			 (sp) ? rstats->cck_stats[i].cck_sp_cnt :	\
			 rstats->cck_stats[i].cck_lp_cnt);		\
	} while (0)

#define PRINT_OFDM_RATE(str, i)					\
	do {							\
		len += scnprintf(buf + len, size - len,		\
			 "%11s : %10u\n",			\
			 str,					\
			 rstats->ofdm_stats[i].ofdm_cnt);	\
	} while (0)

static ssize_t read_file_node_recv(struct file *file, char __user *user_buf,
				   size_t count, loff_t *ppos)
{
	struct ath_node *an = file->private_data;
	struct ath_softc *sc = an->sc;
	struct ath_hw *ah = sc->sc_ah;
	struct ath_rx_rate_stats *rstats;
	struct ieee80211_sta *sta = an->sta;
	enum nl80211_band band;
	u32 len = 0, size = 4096;
	char *buf;
	size_t retval;
	int i;

	buf = kzalloc(size, GFP_KERNEL);
	if (buf == NULL)
		return -ENOMEM;

	band = ah->curchan->chan->band;
	rstats = &an->rx_rate_stats;

	if (!sta->ht_cap.ht_supported)
		goto legacy;

	len += scnprintf(buf + len, size - len,
			 "%24s%10s%10s%10s\n",
			 "HT20", "HT40", "SGI", "LGI");

	for (i = 0; i < 24; i++) {
		len += scnprintf(buf + len, size - len,
				 "%8s%3u : %10u%10u%10u%10u\n",
				 "MCS", i,
				 rstats->ht_stats[i].ht20_cnt,
				 rstats->ht_stats[i].ht40_cnt,
				 rstats->ht_stats[i].sgi_cnt,
				 rstats->ht_stats[i].lgi_cnt);
	}

	len += scnprintf(buf + len, size - len, "\n");

legacy:
	if (band == NL80211_BAND_2GHZ) {
		PRINT_CCK_RATE("CCK-1M/LP", 0, false);
		PRINT_CCK_RATE("CCK-2M/LP", 1, false);
		PRINT_CCK_RATE("CCK-5.5M/LP", 2, false);
		PRINT_CCK_RATE("CCK-11M/LP", 3, false);

		PRINT_CCK_RATE("CCK-2M/SP", 1, true);
		PRINT_CCK_RATE("CCK-5.5M/SP", 2, true);
		PRINT_CCK_RATE("CCK-11M/SP", 3, true);
	}

	PRINT_OFDM_RATE("OFDM-6M", 0);
	PRINT_OFDM_RATE("OFDM-9M", 1);
	PRINT_OFDM_RATE("OFDM-12M", 2);
	PRINT_OFDM_RATE("OFDM-18M", 3);
	PRINT_OFDM_RATE("OFDM-24M", 4);
	PRINT_OFDM_RATE("OFDM-36M", 5);
	PRINT_OFDM_RATE("OFDM-48M", 6);
	PRINT_OFDM_RATE("OFDM-54M", 7);

	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
	kfree(buf);

	return retval;
}

#undef PRINT_OFDM_RATE
#undef PRINT_CCK_RATE

static const struct file_operations fops_node_recv = {
	.read = read_file_node_recv,
	.open = simple_open,
	.owner = THIS_MODULE,
	.llseek = default_llseek,
};

void ath_debug_airtime(struct ath_softc *sc,
		struct ath_node *an,
		u32 rx,
		u32 tx)
{
	struct ath_airtime_stats *astats = &an->airtime_stats;

	astats->rx_airtime += rx;
	astats->tx_airtime += tx;
}

static ssize_t read_airtime(struct file *file, char __user *user_buf,
			size_t count, loff_t *ppos)
{
	struct ath_node *an = file->private_data;
	struct ath_airtime_stats *astats;
	static const char *qname[4] = {
		"VO", "VI", "BE", "BK"
	};
	u32 len = 0, size = 256;
	char *buf;
	size_t retval;
	int i;

	buf = kzalloc(size, GFP_KERNEL);
	if (buf == NULL)
		return -ENOMEM;

	astats = &an->airtime_stats;

	len += scnprintf(buf + len, size - len, "RX: %u us\n", astats->rx_airtime);
	len += scnprintf(buf + len, size - len, "TX: %u us\n", astats->tx_airtime);
	len += scnprintf(buf + len, size - len, "Deficit: ");
	for (i = 0; i < 4; i++)
		len += scnprintf(buf+len, size - len, "%s: %lld us ", qname[i], an->airtime_deficit[i]);
	if (len < size)
		buf[len++] = '\n';

	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
	kfree(buf);

	return retval;
}


static const struct file_operations fops_airtime = {
	.read = read_airtime,
	.open = simple_open,
	.owner = THIS_MODULE,
	.llseek = default_llseek,
};


void ath9k_sta_add_debugfs(struct ieee80211_hw *hw,
			   struct ieee80211_vif *vif,
			   struct ieee80211_sta *sta,
			   struct dentry *dir)
{
	struct ath_node *an = (struct ath_node *)sta->drv_priv;

	debugfs_create_file("node_aggr", S_IRUGO, dir, an, &fops_node_aggr);
	debugfs_create_file("node_recv", S_IRUGO, dir, an, &fops_node_recv);
	debugfs_create_file("airtime", S_IRUGO, dir, an, &fops_airtime);
}
Commit	Line	Data
1cdbaf0d SM	1	/*
	2	* Copyright (c) 2013 Qualcomm Atheros, Inc.
	3	*
	4	* Permission to use, copy, modify, and/or distribute this software for any
	5	* purpose with or without fee is hereby granted, provided that the above
	6	* copyright notice and this permission notice appear in all copies.
	7	*
	8	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	9	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	10	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	11	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	12	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	13	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	14	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	15	*/
	16
	17	#include "ath9k.h"
	18
350e2dcb SM	19	/*************/
	20	/* node_aggr */
	21	/*************/
	22
1cdbaf0d SM	23	static ssize_t read_file_node_aggr(struct file file, char __user user_buf,
	24	size_t count, loff_t *ppos)
	25	{
	26	struct ath_node *an = file->private_data;
	27	struct ath_softc *sc = an->sc;
	28	struct ath_atx_tid *tid;
1cdbaf0d SM	29	struct ath_txq *txq;
	30	u32 len = 0, size = 4096;
	31	char *buf;
	32	size_t retval;
12e03596	33	int tidno;
1cdbaf0d SM	34
	35	buf = kzalloc(size, GFP_KERNEL);
	36	if (buf == NULL)
	37	return -ENOMEM;
	38
	39	if (!an->sta->ht_cap.ht_supported) {
	40	len = scnprintf(buf, size, "%s\n",
	41	"HT not supported");
	42	goto exit;
	43	}
	44
	45	len = scnprintf(buf, size, "Max-AMPDU: %d\n",
	46	an->maxampdu);
	47	len += scnprintf(buf + len, size - len, "MPDU Density: %d\n\n",
	48	an->mpdudensity);
	49
1cdbaf0d SM	50	len += scnprintf(buf + len, size - len,
	51	"\n%3s%11s%10s%10s%10s%10s%9s%6s%8s\n",
	52	"TID", "SEQ_START", "SEQ_NEXT", "BAW_SIZE",
	53	"BAW_HEAD", "BAW_TAIL", "BAR_IDX", "SCHED", "PAUSED");
	54
50f08edf THJ	55	for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
50f08edf THJ	56	tid = ath_node_to_tid(an, tidno);
12e03596	57	txq = tid->txq;
1cdbaf0d	58	ath_txq_lock(sc, txq);
78175fc4 SM	59	if (tid->active) {
78175fc4 SM	60	len += scnprintf(buf + len, size - len,
62e54dbb	61	"%3d%11d%10d%10d%10d%10d%9d%6d\n",
78175fc4 SM	62	tid->tidno,
	63	tid->seq_start,
	64	tid->seq_next,
	65	tid->baw_size,
	66	tid->baw_head,
	67	tid->baw_tail,
	68	tid->bar_index,
12e03596	69	!list_empty(&tid->list));
78175fc4	70	}
1cdbaf0d SM	71	ath_txq_unlock(sc, txq);
	72	}
	73	exit:
	74	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
	75	kfree(buf);
	76
	77	return retval;
	78	}
	79
	80	static const struct file_operations fops_node_aggr = {
	81	.read = read_file_node_aggr,
	82	.open = simple_open,
	83	.owner = THIS_MODULE,
	84	.llseek = default_llseek,
	85	};
	86
350e2dcb SM	87	/*************/
	88	/* node_recv */
	89	/*************/
	90
	91	void ath_debug_rate_stats(struct ath_softc *sc,
	92	struct ath_rx_status *rs,
	93	struct sk_buff *skb)
	94	{
	95	struct ieee80211_hdr hdr = (struct ieee80211_hdr ) skb->data;
	96	struct ath_hw *ah = sc->sc_ah;
	97	struct ieee80211_rx_status *rxs;
	98	struct ath_rx_rate_stats *rstats;
	99	struct ieee80211_sta *sta;
	100	struct ath_node *an;
	101
	102	if (!ieee80211_is_data(hdr->frame_control))
	103	return;
	104
	105	rcu_read_lock();
	106
	107	sta = ieee80211_find_sta_by_ifaddr(sc->hw, hdr->addr2, NULL);
	108	if (!sta)
	109	goto exit;
	110
	111	an = (struct ath_node *) sta->drv_priv;
	112	rstats = &an->rx_rate_stats;
	113	rxs = IEEE80211_SKB_RXCB(skb);
	114
	115	if (IS_HT_RATE(rs->rs_rate)) {
1908861f	116	if (rxs->rate_idx >= ARRAY_SIZE(rstats->ht_stats))
350e2dcb SM	117	goto exit;
350e2dcb SM	118
da6a4352	119	if ((rxs->bw == RATE_INFO_BW_40))
350e2dcb SM	120	rstats->ht_stats[rxs->rate_idx].ht40_cnt++;
	121	else
	122	rstats->ht_stats[rxs->rate_idx].ht20_cnt++;
	123
7fdd69c5	124	if (rxs->enc_flags & RX_ENC_FLAG_SHORT_GI)
350e2dcb SM	125	rstats->ht_stats[rxs->rate_idx].sgi_cnt++;
	126	else
	127	rstats->ht_stats[rxs->rate_idx].lgi_cnt++;
	128
	129	goto exit;
	130	}
	131
	132	if (IS_CCK_RATE(rs->rs_rate)) {
7fdd69c5	133	if (rxs->enc_flags & RX_ENC_FLAG_SHORTPRE)
350e2dcb SM	134	rstats->cck_stats[rxs->rate_idx].cck_sp_cnt++;
	135	else
	136	rstats->cck_stats[rxs->rate_idx].cck_lp_cnt++;
	137
	138	goto exit;
	139	}
	140
	141	if (IS_OFDM_RATE(rs->rs_rate)) {
57fbcce3	142	if (ah->curchan->chan->band == NL80211_BAND_2GHZ)
350e2dcb SM	143	rstats->ofdm_stats[rxs->rate_idx - 4].ofdm_cnt++;
	144	else
	145	rstats->ofdm_stats[rxs->rate_idx].ofdm_cnt++;
	146	}
	147	exit:
	148	rcu_read_unlock();
	149	}
	150
	151	#define PRINT_CCK_RATE(str, i, sp) \
	152	do { \
	153	len += scnprintf(buf + len, size - len, \
	154	"%11s : %10u\n", \
	155	str, \
	156	(sp) ? rstats->cck_stats[i].cck_sp_cnt : \
	157	rstats->cck_stats[i].cck_lp_cnt); \
	158	} while (0)
	159
	160	#define PRINT_OFDM_RATE(str, i) \
	161	do { \
	162	len += scnprintf(buf + len, size - len, \
	163	"%11s : %10u\n", \
	164	str, \
	165	rstats->ofdm_stats[i].ofdm_cnt); \
	166	} while (0)
	167
	168	static ssize_t read_file_node_recv(struct file file, char __user user_buf,
	169	size_t count, loff_t *ppos)
	170	{
	171	struct ath_node *an = file->private_data;
	172	struct ath_softc *sc = an->sc;
	173	struct ath_hw *ah = sc->sc_ah;
	174	struct ath_rx_rate_stats *rstats;
	175	struct ieee80211_sta *sta = an->sta;
57fbcce3	176	enum nl80211_band band;
350e2dcb SM	177	u32 len = 0, size = 4096;
	178	char *buf;
	179	size_t retval;
	180	int i;
	181
	182	buf = kzalloc(size, GFP_KERNEL);
	183	if (buf == NULL)
	184	return -ENOMEM;
	185
	186	band = ah->curchan->chan->band;
	187	rstats = &an->rx_rate_stats;
	188
	189	if (!sta->ht_cap.ht_supported)
	190	goto legacy;
	191
	192	len += scnprintf(buf + len, size - len,
	193	"%24s%10s%10s%10s\n",
	194	"HT20", "HT40", "SGI", "LGI");
	195
	196	for (i = 0; i < 24; i++) {
	197	len += scnprintf(buf + len, size - len,
	198	"%8s%3u : %10u%10u%10u%10u\n",
	199	"MCS", i,
	200	rstats->ht_stats[i].ht20_cnt,
	201	rstats->ht_stats[i].ht40_cnt,
	202	rstats->ht_stats[i].sgi_cnt,
	203	rstats->ht_stats[i].lgi_cnt);
	204	}
	205
	206	len += scnprintf(buf + len, size - len, "\n");
	207
	208	legacy:
57fbcce3	209	if (band == NL80211_BAND_2GHZ) {
350e2dcb SM	210	PRINT_CCK_RATE("CCK-1M/LP", 0, false);
	211	PRINT_CCK_RATE("CCK-2M/LP", 1, false);
	212	PRINT_CCK_RATE("CCK-5.5M/LP", 2, false);
	213	PRINT_CCK_RATE("CCK-11M/LP", 3, false);
	214
	215	PRINT_CCK_RATE("CCK-2M/SP", 1, true);
	216	PRINT_CCK_RATE("CCK-5.5M/SP", 2, true);
	217	PRINT_CCK_RATE("CCK-11M/SP", 3, true);
	218	}
	219
	220	PRINT_OFDM_RATE("OFDM-6M", 0);
	221	PRINT_OFDM_RATE("OFDM-9M", 1);
	222	PRINT_OFDM_RATE("OFDM-12M", 2);
	223	PRINT_OFDM_RATE("OFDM-18M", 3);
	224	PRINT_OFDM_RATE("OFDM-24M", 4);
	225	PRINT_OFDM_RATE("OFDM-36M", 5);
	226	PRINT_OFDM_RATE("OFDM-48M", 6);
	227	PRINT_OFDM_RATE("OFDM-54M", 7);
	228
	229	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
	230	kfree(buf);
	231
	232	return retval;
	233	}
	234
	235	#undef PRINT_OFDM_RATE
	236	#undef PRINT_CCK_RATE
	237
	238	static const struct file_operations fops_node_recv = {
	239	.read = read_file_node_recv,
	240	.open = simple_open,
	241	.owner = THIS_MODULE,
	242	.llseek = default_llseek,
	243	};
	244
63fefa05 THJ	245	void ath_debug_airtime(struct ath_softc *sc,
	246	struct ath_node *an,
	247	u32 rx,
	248	u32 tx)
	249	{
	250	struct ath_airtime_stats *astats = &an->airtime_stats;
	251
	252	astats->rx_airtime += rx;
	253	astats->tx_airtime += tx;
	254	}
	255
	256	static ssize_t read_airtime(struct file file, char __user user_buf,
	257	size_t count, loff_t *ppos)
	258	{
	259	struct ath_node *an = file->private_data;
	260	struct ath_airtime_stats *astats;
	261	static const char *qname[4] = {
	262	"VO", "VI", "BE", "BK"
	263	};
	264	u32 len = 0, size = 256;
	265	char *buf;
	266	size_t retval;
	267	int i;
	268
	269	buf = kzalloc(size, GFP_KERNEL);
	270	if (buf == NULL)
	271	return -ENOMEM;
	272
	273	astats = &an->airtime_stats;
	274
	275	len += scnprintf(buf + len, size - len, "RX: %u us\n", astats->rx_airtime);
	276	len += scnprintf(buf + len, size - len, "TX: %u us\n", astats->tx_airtime);
	277	len += scnprintf(buf + len, size - len, "Deficit: ");
	278	for (i = 0; i < 4; i++)
	279	len += scnprintf(buf+len, size - len, "%s: %lld us ", qname[i], an->airtime_deficit[i]);
	280	if (len < size)
	281	buf[len++] = '\n';
	282
	283	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
	284	kfree(buf);
	285
	286	return retval;
	287	}
	288
	289
	290	static const struct file_operations fops_airtime = {
	291	.read = read_airtime,
	292	.open = simple_open,
	293	.owner = THIS_MODULE,
	294	.llseek = default_llseek,
	295	};
	296
	297
1cdbaf0d SM	298	void ath9k_sta_add_debugfs(struct ieee80211_hw *hw,
	299	struct ieee80211_vif *vif,
	300	struct ieee80211_sta *sta,
	301	struct dentry *dir)
	302	{
	303	struct ath_node an = (struct ath_node )sta->drv_priv;
350e2dcb	304
1cdbaf0d	305	debugfs_create_file("node_aggr", S_IRUGO, dir, an, &fops_node_aggr);
350e2dcb	306	debugfs_create_file("node_recv", S_IRUGO, dir, an, &fops_node_recv);
63fefa05	307	debugfs_create_file("airtime", S_IRUGO, dir, an, &fops_airtime);
1cdbaf0d	308	}