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/*
* 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, tid = &an->tid[tidno];
tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
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->flag & RX_FLAG_40MHZ)
rstats->ht_stats[rxs->rate_idx].ht40_cnt++;
else
rstats->ht_stats[rxs->rate_idx].ht20_cnt++;
if (rxs->flag & RX_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->flag & RX_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 == IEEE80211_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 ieee80211_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 == IEEE80211_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 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);
}
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