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 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_atx_ac *ac; 30 struct ath_txq *txq; 31 u32 len = 0, size = 4096; 32 char *buf; 33 size_t retval; 34 int tidno, acno; 35 36 buf = kzalloc(size, GFP_KERNEL); 37 if (buf == NULL) 38 return -ENOMEM; 39 40 if (!an->sta->ht_cap.ht_supported) { 41 len = scnprintf(buf, size, "%s\n", 42 "HT not supported"); 43 goto exit; 44 } 45 46 len = scnprintf(buf, size, "Max-AMPDU: %d\n", 47 an->maxampdu); 48 len += scnprintf(buf + len, size - len, "MPDU Density: %d\n\n", 49 an->mpdudensity); 50 51 len += scnprintf(buf + len, size - len, 52 "%2s%7s\n", "AC", "SCHED"); 53 54 for (acno = 0, ac = &an->ac[acno]; 55 acno < IEEE80211_NUM_ACS; acno++, ac++) { 56 txq = ac->txq; 57 ath_txq_lock(sc, txq); 58 len += scnprintf(buf + len, size - len, 59 "%2d%7d\n", 60 acno, ac->sched); 61 ath_txq_unlock(sc, txq); 62 } 63 64 len += scnprintf(buf + len, size - len, 65 "\n%3s%11s%10s%10s%10s%10s%9s%6s%8s\n", 66 "TID", "SEQ_START", "SEQ_NEXT", "BAW_SIZE", 67 "BAW_HEAD", "BAW_TAIL", "BAR_IDX", "SCHED", "PAUSED"); 68 69 for (tidno = 0, tid = &an->tid[tidno]; 70 tidno < IEEE80211_NUM_TIDS; tidno++, tid++) { 71 txq = tid->ac->txq; 72 ath_txq_lock(sc, txq); 73 if (tid->active) { 74 len += scnprintf(buf + len, size - len, 75 "%3d%11d%10d%10d%10d%10d%9d%6d\n", 76 tid->tidno, 77 tid->seq_start, 78 tid->seq_next, 79 tid->baw_size, 80 tid->baw_head, 81 tid->baw_tail, 82 tid->bar_index, 83 tid->sched); 84 } 85 ath_txq_unlock(sc, txq); 86 } 87exit: 88 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 89 kfree(buf); 90 91 return retval; 92} 93 94static const struct file_operations fops_node_aggr = { 95 .read = read_file_node_aggr, 96 .open = simple_open, 97 .owner = THIS_MODULE, 98 .llseek = default_llseek, 99}; 100 101/*************/ 102/* node_recv */ 103/*************/ 104 105void ath_debug_rate_stats(struct ath_softc *sc, 106 struct ath_rx_status *rs, 107 struct sk_buff *skb) 108{ 109 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; 110 struct ath_hw *ah = sc->sc_ah; 111 struct ieee80211_rx_status *rxs; 112 struct ath_rx_rate_stats *rstats; 113 struct ieee80211_sta *sta; 114 struct ath_node *an; 115 116 if (!ieee80211_is_data(hdr->frame_control)) 117 return; 118 119 rcu_read_lock(); 120 121 sta = ieee80211_find_sta_by_ifaddr(sc->hw, hdr->addr2, NULL); 122 if (!sta) 123 goto exit; 124 125 an = (struct ath_node *) sta->drv_priv; 126 rstats = &an->rx_rate_stats; 127 rxs = IEEE80211_SKB_RXCB(skb); 128 129 if (IS_HT_RATE(rs->rs_rate)) { 130 if (rxs->rate_idx >= ARRAY_SIZE(rstats->ht_stats)) 131 goto exit; 132 133 if (rxs->flag & RX_FLAG_40MHZ) 134 rstats->ht_stats[rxs->rate_idx].ht40_cnt++; 135 else 136 rstats->ht_stats[rxs->rate_idx].ht20_cnt++; 137 138 if (rxs->flag & RX_FLAG_SHORT_GI) 139 rstats->ht_stats[rxs->rate_idx].sgi_cnt++; 140 else 141 rstats->ht_stats[rxs->rate_idx].lgi_cnt++; 142 143 goto exit; 144 } 145 146 if (IS_CCK_RATE(rs->rs_rate)) { 147 if (rxs->flag & RX_FLAG_SHORTPRE) 148 rstats->cck_stats[rxs->rate_idx].cck_sp_cnt++; 149 else 150 rstats->cck_stats[rxs->rate_idx].cck_lp_cnt++; 151 152 goto exit; 153 } 154 155 if (IS_OFDM_RATE(rs->rs_rate)) { 156 if (ah->curchan->chan->band == IEEE80211_BAND_2GHZ) 157 rstats->ofdm_stats[rxs->rate_idx - 4].ofdm_cnt++; 158 else 159 rstats->ofdm_stats[rxs->rate_idx].ofdm_cnt++; 160 } 161exit: 162 rcu_read_unlock(); 163} 164 165#define PRINT_CCK_RATE(str, i, sp) \ 166 do { \ 167 len += scnprintf(buf + len, size - len, \ 168 "%11s : %10u\n", \ 169 str, \ 170 (sp) ? rstats->cck_stats[i].cck_sp_cnt : \ 171 rstats->cck_stats[i].cck_lp_cnt); \ 172 } while (0) 173 174#define PRINT_OFDM_RATE(str, i) \ 175 do { \ 176 len += scnprintf(buf + len, size - len, \ 177 "%11s : %10u\n", \ 178 str, \ 179 rstats->ofdm_stats[i].ofdm_cnt); \ 180 } while (0) 181 182static ssize_t read_file_node_recv(struct file *file, char __user *user_buf, 183 size_t count, loff_t *ppos) 184{ 185 struct ath_node *an = file->private_data; 186 struct ath_softc *sc = an->sc; 187 struct ath_hw *ah = sc->sc_ah; 188 struct ath_rx_rate_stats *rstats; 189 struct ieee80211_sta *sta = an->sta; 190 enum ieee80211_band band; 191 u32 len = 0, size = 4096; 192 char *buf; 193 size_t retval; 194 int i; 195 196 buf = kzalloc(size, GFP_KERNEL); 197 if (buf == NULL) 198 return -ENOMEM; 199 200 band = ah->curchan->chan->band; 201 rstats = &an->rx_rate_stats; 202 203 if (!sta->ht_cap.ht_supported) 204 goto legacy; 205 206 len += scnprintf(buf + len, size - len, 207 "%24s%10s%10s%10s\n", 208 "HT20", "HT40", "SGI", "LGI"); 209 210 for (i = 0; i < 24; i++) { 211 len += scnprintf(buf + len, size - len, 212 "%8s%3u : %10u%10u%10u%10u\n", 213 "MCS", i, 214 rstats->ht_stats[i].ht20_cnt, 215 rstats->ht_stats[i].ht40_cnt, 216 rstats->ht_stats[i].sgi_cnt, 217 rstats->ht_stats[i].lgi_cnt); 218 } 219 220 len += scnprintf(buf + len, size - len, "\n"); 221 222legacy: 223 if (band == IEEE80211_BAND_2GHZ) { 224 PRINT_CCK_RATE("CCK-1M/LP", 0, false); 225 PRINT_CCK_RATE("CCK-2M/LP", 1, false); 226 PRINT_CCK_RATE("CCK-5.5M/LP", 2, false); 227 PRINT_CCK_RATE("CCK-11M/LP", 3, false); 228 229 PRINT_CCK_RATE("CCK-2M/SP", 1, true); 230 PRINT_CCK_RATE("CCK-5.5M/SP", 2, true); 231 PRINT_CCK_RATE("CCK-11M/SP", 3, true); 232 } 233 234 PRINT_OFDM_RATE("OFDM-6M", 0); 235 PRINT_OFDM_RATE("OFDM-9M", 1); 236 PRINT_OFDM_RATE("OFDM-12M", 2); 237 PRINT_OFDM_RATE("OFDM-18M", 3); 238 PRINT_OFDM_RATE("OFDM-24M", 4); 239 PRINT_OFDM_RATE("OFDM-36M", 5); 240 PRINT_OFDM_RATE("OFDM-48M", 6); 241 PRINT_OFDM_RATE("OFDM-54M", 7); 242 243 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 244 kfree(buf); 245 246 return retval; 247} 248 249#undef PRINT_OFDM_RATE 250#undef PRINT_CCK_RATE 251 252static const struct file_operations fops_node_recv = { 253 .read = read_file_node_recv, 254 .open = simple_open, 255 .owner = THIS_MODULE, 256 .llseek = default_llseek, 257}; 258 259void ath9k_sta_add_debugfs(struct ieee80211_hw *hw, 260 struct ieee80211_vif *vif, 261 struct ieee80211_sta *sta, 262 struct dentry *dir) 263{ 264 struct ath_node *an = (struct ath_node *)sta->drv_priv; 265 266 debugfs_create_file("node_aggr", S_IRUGO, dir, an, &fops_node_aggr); 267 debugfs_create_file("node_recv", S_IRUGO, dir, an, &fops_node_recv); 268} 269