255 lines · c
1/*2 * Copyright (c) 2013 Qualcomm Atheros, Inc.3 *4 * Permission to use, copy, modify, and/or distribute this software for any5 * purpose with or without fee is hereby granted, provided that the above6 * copyright notice and this permission notice appear in all copies.7 *8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.15 */16 17#include "ath9k.h"18 19/*************/20/* node_aggr */21/*************/22 23static 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;29 struct ath_txq *txq;30 u32 len = 0, size = 4096;31 char *buf;32 size_t retval;33 int tidno;34 35 buf = kzalloc(size, GFP_KERNEL);36 if (buf == NULL)37 return -ENOMEM;38 39 if (!an->sta->deflink.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 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 55 for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {56 tid = ath_node_to_tid(an, tidno);57 txq = tid->txq;58 ath_txq_lock(sc, txq);59 if (tid->active) {60 len += scnprintf(buf + len, size - len,61 "%3d%11d%10d%10d%10d%10d%9d%6d\n",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,69 !list_empty(&tid->list));70 }71 ath_txq_unlock(sc, txq);72 }73exit:74 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);75 kfree(buf);76 77 return retval;78}79 80static 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 87/*************/88/* node_recv */89/*************/90 91void 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)) {116 if (rxs->rate_idx >= ARRAY_SIZE(rstats->ht_stats))117 goto exit;118 119 if (rxs->bw == RATE_INFO_BW_40)120 rstats->ht_stats[rxs->rate_idx].ht40_cnt++;121 else122 rstats->ht_stats[rxs->rate_idx].ht20_cnt++;123 124 if (rxs->enc_flags & RX_ENC_FLAG_SHORT_GI)125 rstats->ht_stats[rxs->rate_idx].sgi_cnt++;126 else127 rstats->ht_stats[rxs->rate_idx].lgi_cnt++;128 129 goto exit;130 }131 132 if (IS_CCK_RATE(rs->rs_rate)) {133 if (rxs->enc_flags & RX_ENC_FLAG_SHORTPRE)134 rstats->cck_stats[rxs->rate_idx].cck_sp_cnt++;135 else136 rstats->cck_stats[rxs->rate_idx].cck_lp_cnt++;137 138 goto exit;139 }140 141 if (IS_OFDM_RATE(rs->rs_rate)) {142 if (ah->curchan->chan->band == NL80211_BAND_2GHZ)143 rstats->ofdm_stats[rxs->rate_idx - 4].ofdm_cnt++;144 else145 rstats->ofdm_stats[rxs->rate_idx].ofdm_cnt++;146 }147exit: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 168static 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;176 enum nl80211_band band;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->deflink.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 208legacy:209 if (band == NL80211_BAND_2GHZ) {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_RATE236#undef PRINT_CCK_RATE237 238static 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 245void ath9k_sta_add_debugfs(struct ieee80211_hw *hw,246 struct ieee80211_vif *vif,247 struct ieee80211_sta *sta,248 struct dentry *dir)249{250 struct ath_node *an = (struct ath_node *)sta->drv_priv;251 252 debugfs_create_file("node_aggr", 0444, dir, an, &fops_node_aggr);253 debugfs_create_file("node_recv", 0444, dir, an, &fops_node_recv);254}255