1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * mac80211 ethtool hooks for cfg80211 4 * 5 * Copied from cfg.c - originally 6 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2014 Intel Corporation (Author: Johannes Berg) 8 * Copyright (C) 2018 Intel Corporation 9 */ 10 #include <linux/types.h> 11 #include <net/cfg80211.h> 12 #include "ieee80211_i.h" 13 #include "sta_info.h" 14 #include "driver-ops.h" 15 16 static int ieee80211_set_ringparam(struct net_device *dev, 17 struct ethtool_ringparam *rp) 18 { 19 struct ieee80211_local *local = wiphy_priv(dev->ieee80211_ptr->wiphy); 20 21 if (rp->rx_mini_pending != 0 || rp->rx_jumbo_pending != 0) 22 return -EINVAL; 23 24 return drv_set_ringparam(local, rp->tx_pending, rp->rx_pending); 25 } 26 27 static void ieee80211_get_ringparam(struct net_device *dev, 28 struct ethtool_ringparam *rp) 29 { 30 struct ieee80211_local *local = wiphy_priv(dev->ieee80211_ptr->wiphy); 31 32 memset(rp, 0, sizeof(*rp)); 33 34 drv_get_ringparam(local, &rp->tx_pending, &rp->tx_max_pending, 35 &rp->rx_pending, &rp->rx_max_pending); 36 } 37 38 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 39 "rx_packets", "rx_bytes", 40 "rx_duplicates", "rx_fragments", "rx_dropped", 41 "tx_packets", "tx_bytes", 42 "tx_filtered", "tx_retry_failed", "tx_retries", 43 "sta_state", "txrate", "rxrate", "signal", 44 "channel", "noise", "ch_time", "ch_time_busy", 45 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 46 }; 47 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 48 49 static int ieee80211_get_sset_count(struct net_device *dev, int sset) 50 { 51 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 52 int rv = 0; 53 54 if (sset == ETH_SS_STATS) 55 rv += STA_STATS_LEN; 56 57 rv += drv_get_et_sset_count(sdata, sset); 58 59 if (rv == 0) 60 return -EOPNOTSUPP; 61 return rv; 62 } 63 64 static void ieee80211_get_stats(struct net_device *dev, 65 struct ethtool_stats *stats, 66 u64 *data) 67 { 68 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 69 struct ieee80211_chanctx_conf *chanctx_conf; 70 struct ieee80211_channel *channel; 71 struct sta_info *sta; 72 struct ieee80211_local *local = sdata->local; 73 struct station_info sinfo; 74 struct survey_info survey; 75 int i, q; 76 #define STA_STATS_SURVEY_LEN 7 77 78 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 79 80 #define ADD_STA_STATS(sta) \ 81 do { \ 82 data[i++] += sta->rx_stats.packets; \ 83 data[i++] += sta->rx_stats.bytes; \ 84 data[i++] += sta->rx_stats.num_duplicates; \ 85 data[i++] += sta->rx_stats.fragments; \ 86 data[i++] += sta->rx_stats.dropped; \ 87 \ 88 data[i++] += sinfo.tx_packets; \ 89 data[i++] += sinfo.tx_bytes; \ 90 data[i++] += sta->status_stats.filtered; \ 91 data[i++] += sta->status_stats.retry_failed; \ 92 data[i++] += sta->status_stats.retry_count; \ 93 } while (0) 94 95 /* For Managed stations, find the single station based on BSSID 96 * and use that. For interface types, iterate through all available 97 * stations and add stats for any station that is assigned to this 98 * network device. 99 */ 100 101 mutex_lock(&local->sta_mtx); 102 103 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 104 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 105 106 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 107 goto do_survey; 108 109 memset(&sinfo, 0, sizeof(sinfo)); 110 sta_set_sinfo(sta, &sinfo, false); 111 112 i = 0; 113 ADD_STA_STATS(sta); 114 115 data[i++] = sta->sta_state; 116 117 118 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) 119 data[i] = 100000ULL * 120 cfg80211_calculate_bitrate(&sinfo.txrate); 121 i++; 122 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) 123 data[i] = 100000ULL * 124 cfg80211_calculate_bitrate(&sinfo.rxrate); 125 i++; 126 127 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG)) 128 data[i] = (u8)sinfo.signal_avg; 129 i++; 130 } else { 131 list_for_each_entry(sta, &local->sta_list, list) { 132 /* Make sure this station belongs to the proper dev */ 133 if (sta->sdata->dev != dev) 134 continue; 135 136 memset(&sinfo, 0, sizeof(sinfo)); 137 sta_set_sinfo(sta, &sinfo, false); 138 i = 0; 139 ADD_STA_STATS(sta); 140 } 141 } 142 143 do_survey: 144 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 145 /* Get survey stats for current channel */ 146 survey.filled = 0; 147 148 rcu_read_lock(); 149 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 150 if (chanctx_conf) 151 channel = chanctx_conf->def.chan; 152 else 153 channel = NULL; 154 rcu_read_unlock(); 155 156 if (channel) { 157 q = 0; 158 do { 159 survey.filled = 0; 160 if (drv_get_survey(local, q, &survey) != 0) { 161 survey.filled = 0; 162 break; 163 } 164 q++; 165 } while (channel != survey.channel); 166 } 167 168 if (survey.filled) 169 data[i++] = survey.channel->center_freq; 170 else 171 data[i++] = 0; 172 if (survey.filled & SURVEY_INFO_NOISE_DBM) 173 data[i++] = (u8)survey.noise; 174 else 175 data[i++] = -1LL; 176 if (survey.filled & SURVEY_INFO_TIME) 177 data[i++] = survey.time; 178 else 179 data[i++] = -1LL; 180 if (survey.filled & SURVEY_INFO_TIME_BUSY) 181 data[i++] = survey.time_busy; 182 else 183 data[i++] = -1LL; 184 if (survey.filled & SURVEY_INFO_TIME_EXT_BUSY) 185 data[i++] = survey.time_ext_busy; 186 else 187 data[i++] = -1LL; 188 if (survey.filled & SURVEY_INFO_TIME_RX) 189 data[i++] = survey.time_rx; 190 else 191 data[i++] = -1LL; 192 if (survey.filled & SURVEY_INFO_TIME_TX) 193 data[i++] = survey.time_tx; 194 else 195 data[i++] = -1LL; 196 197 mutex_unlock(&local->sta_mtx); 198 199 if (WARN_ON(i != STA_STATS_LEN)) 200 return; 201 202 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 203 } 204 205 static void ieee80211_get_strings(struct net_device *dev, u32 sset, u8 *data) 206 { 207 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 208 int sz_sta_stats = 0; 209 210 if (sset == ETH_SS_STATS) { 211 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 212 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats); 213 } 214 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 215 } 216 217 static int ieee80211_get_regs_len(struct net_device *dev) 218 { 219 return 0; 220 } 221 222 static void ieee80211_get_regs(struct net_device *dev, 223 struct ethtool_regs *regs, 224 void *data) 225 { 226 struct wireless_dev *wdev = dev->ieee80211_ptr; 227 228 regs->version = wdev->wiphy->hw_version; 229 regs->len = 0; 230 } 231 232 const struct ethtool_ops ieee80211_ethtool_ops = { 233 .get_drvinfo = cfg80211_get_drvinfo, 234 .get_regs_len = ieee80211_get_regs_len, 235 .get_regs = ieee80211_get_regs, 236 .get_link = ethtool_op_get_link, 237 .get_ringparam = ieee80211_get_ringparam, 238 .set_ringparam = ieee80211_set_ringparam, 239 .get_strings = ieee80211_get_strings, 240 .get_ethtool_stats = ieee80211_get_stats, 241 .get_sset_count = ieee80211_get_sset_count, 242 }; 243