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_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 else 122 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 else 127 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 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)) { 142 if (ah->curchan->chan->band == NL80211_BAND_2GHZ) 143 rstats->ofdm_stats[rxs->rate_idx - 4].ofdm_cnt++; 144 else 145 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_RATE 236#undef PRINT_CCK_RATE 237 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