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 struct kernel_ethtool_ringparam *kernel_rp, 19 struct netlink_ext_ack *extack) 20 { 21 struct ieee80211_local *local = wiphy_priv(dev->ieee80211_ptr->wiphy); 22 23 if (rp->rx_mini_pending != 0 || rp->rx_jumbo_pending != 0) 24 return -EINVAL; 25 26 return drv_set_ringparam(local, rp->tx_pending, rp->rx_pending); 27 } 28 29 static void ieee80211_get_ringparam(struct net_device *dev, 30 struct ethtool_ringparam *rp, 31 struct kernel_ethtool_ringparam *kernel_rp, 32 struct netlink_ext_ack *extack) 33 { 34 struct ieee80211_local *local = wiphy_priv(dev->ieee80211_ptr->wiphy); 35 36 memset(rp, 0, sizeof(*rp)); 37 38 drv_get_ringparam(local, &rp->tx_pending, &rp->tx_max_pending, 39 &rp->rx_pending, &rp->rx_max_pending); 40 } 41 42 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 43 "rx_packets", "rx_bytes", 44 "rx_duplicates", "rx_fragments", "rx_dropped", 45 "tx_packets", "tx_bytes", 46 "tx_filtered", "tx_retry_failed", "tx_retries", 47 "sta_state", "txrate", "rxrate", "signal", 48 "channel", "noise", "ch_time", "ch_time_busy", 49 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 50 }; 51 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 52 53 static int ieee80211_get_sset_count(struct net_device *dev, int sset) 54 { 55 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 56 int rv = 0; 57 58 if (sset == ETH_SS_STATS) 59 rv += STA_STATS_LEN; 60 61 rv += drv_get_et_sset_count(sdata, sset); 62 63 if (rv == 0) 64 return -EOPNOTSUPP; 65 return rv; 66 } 67 68 static void ieee80211_get_stats(struct net_device *dev, 69 struct ethtool_stats *stats, 70 u64 *data) 71 { 72 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 73 struct ieee80211_chanctx_conf *chanctx_conf; 74 struct ieee80211_channel *channel; 75 struct sta_info *sta; 76 struct ieee80211_local *local = sdata->local; 77 struct station_info sinfo; 78 struct survey_info survey; 79 int i, q; 80 #define STA_STATS_SURVEY_LEN 7 81 82 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 83 84 #define ADD_STA_STATS(sta) \ 85 do { \ 86 data[i++] += sta->rx_stats.packets; \ 87 data[i++] += sta->rx_stats.bytes; \ 88 data[i++] += sta->rx_stats.num_duplicates; \ 89 data[i++] += sta->rx_stats.fragments; \ 90 data[i++] += sta->rx_stats.dropped; \ 91 \ 92 data[i++] += sinfo.tx_packets; \ 93 data[i++] += sinfo.tx_bytes; \ 94 data[i++] += sta->status_stats.filtered; \ 95 data[i++] += sta->status_stats.retry_failed; \ 96 data[i++] += sta->status_stats.retry_count; \ 97 } while (0) 98 99 /* For Managed stations, find the single station based on BSSID 100 * and use that. For interface types, iterate through all available 101 * stations and add stats for any station that is assigned to this 102 * network device. 103 */ 104 105 mutex_lock(&local->sta_mtx); 106 107 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 108 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid); 109 110 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 111 goto do_survey; 112 113 memset(&sinfo, 0, sizeof(sinfo)); 114 sta_set_sinfo(sta, &sinfo, false); 115 116 i = 0; 117 ADD_STA_STATS(sta); 118 119 data[i++] = sta->sta_state; 120 121 122 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) 123 data[i] = 100000ULL * 124 cfg80211_calculate_bitrate(&sinfo.txrate); 125 i++; 126 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) 127 data[i] = 100000ULL * 128 cfg80211_calculate_bitrate(&sinfo.rxrate); 129 i++; 130 131 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG)) 132 data[i] = (u8)sinfo.signal_avg; 133 i++; 134 } else { 135 list_for_each_entry(sta, &local->sta_list, list) { 136 /* Make sure this station belongs to the proper dev */ 137 if (sta->sdata->dev != dev) 138 continue; 139 140 memset(&sinfo, 0, sizeof(sinfo)); 141 sta_set_sinfo(sta, &sinfo, false); 142 i = 0; 143 ADD_STA_STATS(sta); 144 } 145 } 146 147 do_survey: 148 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 149 /* Get survey stats for current channel */ 150 survey.filled = 0; 151 152 rcu_read_lock(); 153 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 154 if (chanctx_conf) 155 channel = chanctx_conf->def.chan; 156 else 157 channel = NULL; 158 rcu_read_unlock(); 159 160 if (channel) { 161 q = 0; 162 do { 163 survey.filled = 0; 164 if (drv_get_survey(local, q, &survey) != 0) { 165 survey.filled = 0; 166 break; 167 } 168 q++; 169 } while (channel != survey.channel); 170 } 171 172 if (survey.filled) 173 data[i++] = survey.channel->center_freq; 174 else 175 data[i++] = 0; 176 if (survey.filled & SURVEY_INFO_NOISE_DBM) 177 data[i++] = (u8)survey.noise; 178 else 179 data[i++] = -1LL; 180 if (survey.filled & SURVEY_INFO_TIME) 181 data[i++] = survey.time; 182 else 183 data[i++] = -1LL; 184 if (survey.filled & SURVEY_INFO_TIME_BUSY) 185 data[i++] = survey.time_busy; 186 else 187 data[i++] = -1LL; 188 if (survey.filled & SURVEY_INFO_TIME_EXT_BUSY) 189 data[i++] = survey.time_ext_busy; 190 else 191 data[i++] = -1LL; 192 if (survey.filled & SURVEY_INFO_TIME_RX) 193 data[i++] = survey.time_rx; 194 else 195 data[i++] = -1LL; 196 if (survey.filled & SURVEY_INFO_TIME_TX) 197 data[i++] = survey.time_tx; 198 else 199 data[i++] = -1LL; 200 201 mutex_unlock(&local->sta_mtx); 202 203 if (WARN_ON(i != STA_STATS_LEN)) 204 return; 205 206 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 207 } 208 209 static void ieee80211_get_strings(struct net_device *dev, u32 sset, u8 *data) 210 { 211 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 212 int sz_sta_stats = 0; 213 214 if (sset == ETH_SS_STATS) { 215 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 216 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats); 217 } 218 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 219 } 220 221 static int ieee80211_get_regs_len(struct net_device *dev) 222 { 223 return 0; 224 } 225 226 static void ieee80211_get_regs(struct net_device *dev, 227 struct ethtool_regs *regs, 228 void *data) 229 { 230 struct wireless_dev *wdev = dev->ieee80211_ptr; 231 232 regs->version = wdev->wiphy->hw_version; 233 regs->len = 0; 234 } 235 236 const struct ethtool_ops ieee80211_ethtool_ops = { 237 .get_drvinfo = cfg80211_get_drvinfo, 238 .get_regs_len = ieee80211_get_regs_len, 239 .get_regs = ieee80211_get_regs, 240 .get_link = ethtool_op_get_link, 241 .get_ringparam = ieee80211_get_ringparam, 242 .set_ringparam = ieee80211_set_ringparam, 243 .get_strings = ieee80211_get_strings, 244 .get_ethtool_stats = ieee80211_get_stats, 245 .get_sset_count = ieee80211_get_sset_count, 246 }; 247