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, 2022-2023 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 guard(wiphy)(local->hw.wiphy); 27 28 return drv_set_ringparam(local, rp->tx_pending, rp->rx_pending); 29 } 30 31 static void ieee80211_get_ringparam(struct net_device *dev, 32 struct ethtool_ringparam *rp, 33 struct kernel_ethtool_ringparam *kernel_rp, 34 struct netlink_ext_ack *extack) 35 { 36 struct ieee80211_local *local = wiphy_priv(dev->ieee80211_ptr->wiphy); 37 38 memset(rp, 0, sizeof(*rp)); 39 40 guard(wiphy)(local->hw.wiphy); 41 42 drv_get_ringparam(local, &rp->tx_pending, &rp->tx_max_pending, 43 &rp->rx_pending, &rp->rx_max_pending); 44 } 45 46 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = { 47 "rx_packets", "rx_bytes", 48 "rx_duplicates", "rx_fragments", "rx_dropped", 49 "tx_packets", "tx_bytes", 50 "tx_filtered", "tx_retry_failed", "tx_retries", 51 "tx_handlers_drop", "sta_state", "txrate", "rxrate", 52 "signal", "channel", "noise", "ch_time", "ch_time_busy", 53 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx" 54 }; 55 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats) 56 57 static int ieee80211_get_sset_count(struct net_device *dev, int sset) 58 { 59 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 60 int rv = 0; 61 62 if (sset == ETH_SS_STATS) 63 rv += STA_STATS_LEN; 64 65 rv += drv_get_et_sset_count(sdata, sset); 66 67 if (rv == 0) 68 return -EOPNOTSUPP; 69 return rv; 70 } 71 72 static void ieee80211_get_stats(struct net_device *dev, 73 struct ethtool_stats *stats, 74 u64 *data) 75 { 76 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 77 struct ieee80211_chanctx_conf *chanctx_conf; 78 struct ieee80211_channel *channel; 79 struct sta_info *sta; 80 struct ieee80211_local *local = sdata->local; 81 struct station_info sinfo; 82 struct survey_info survey; 83 int i, q; 84 #define STA_STATS_SURVEY_LEN 7 85 86 memset(data, 0, sizeof(u64) * STA_STATS_LEN); 87 88 #define ADD_STA_STATS(sta) \ 89 do { \ 90 data[i++] += sinfo.rx_packets; \ 91 data[i++] += sinfo.rx_bytes; \ 92 data[i++] += (sta)->rx_stats.num_duplicates; \ 93 data[i++] += (sta)->rx_stats.fragments; \ 94 data[i++] += sinfo.rx_dropped_misc; \ 95 \ 96 data[i++] += sinfo.tx_packets; \ 97 data[i++] += sinfo.tx_bytes; \ 98 data[i++] += (sta)->status_stats.filtered; \ 99 data[i++] += sinfo.tx_failed; \ 100 data[i++] += sinfo.tx_retries; \ 101 } while (0) 102 103 /* For Managed stations, find the single station based on BSSID 104 * and use that. For interface types, iterate through all available 105 * stations and add stats for any station that is assigned to this 106 * network device. 107 */ 108 109 guard(wiphy)(local->hw.wiphy); 110 111 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 112 sta = sta_info_get_bss(sdata, sdata->deflink.u.mgd.bssid); 113 114 if (!(sta && !WARN_ON(sta->sdata->dev != dev))) 115 goto do_survey; 116 117 memset(&sinfo, 0, sizeof(sinfo)); 118 sta_set_sinfo(sta, &sinfo, false); 119 120 i = 0; 121 ADD_STA_STATS(&sta->deflink); 122 123 data[i++] = sdata->tx_handlers_drop; 124 data[i++] = sta->sta_state; 125 126 127 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) 128 data[i] = 100000ULL * 129 cfg80211_calculate_bitrate(&sinfo.txrate); 130 i++; 131 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) 132 data[i] = 100000ULL * 133 cfg80211_calculate_bitrate(&sinfo.rxrate); 134 i++; 135 136 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG)) 137 data[i] = (u8)sinfo.signal_avg; 138 i++; 139 } else { 140 list_for_each_entry(sta, &local->sta_list, list) { 141 /* Make sure this station belongs to the proper dev */ 142 if (sta->sdata->dev != dev) 143 continue; 144 145 memset(&sinfo, 0, sizeof(sinfo)); 146 sta_set_sinfo(sta, &sinfo, false); 147 i = 0; 148 ADD_STA_STATS(&sta->deflink); 149 data[i++] = sdata->tx_handlers_drop; 150 } 151 } 152 153 do_survey: 154 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; 155 /* Get survey stats for current channel */ 156 survey.filled = 0; 157 158 rcu_read_lock(); 159 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 160 if (chanctx_conf) 161 channel = chanctx_conf->def.chan; 162 else if (local->open_count > 0 && 163 local->open_count == local->virt_monitors && 164 sdata->vif.type == NL80211_IFTYPE_MONITOR) 165 channel = local->monitor_chanreq.oper.chan; 166 else 167 channel = NULL; 168 rcu_read_unlock(); 169 170 if (channel) { 171 q = 0; 172 do { 173 survey.filled = 0; 174 if (drv_get_survey(local, q, &survey) != 0) { 175 survey.filled = 0; 176 break; 177 } 178 q++; 179 } while (channel != survey.channel); 180 } 181 182 if (survey.filled) 183 data[i++] = survey.channel->center_freq; 184 else 185 data[i++] = 0; 186 if (survey.filled & SURVEY_INFO_NOISE_DBM) 187 data[i++] = (u8)survey.noise; 188 else 189 data[i++] = -1LL; 190 if (survey.filled & SURVEY_INFO_TIME) 191 data[i++] = survey.time; 192 else 193 data[i++] = -1LL; 194 if (survey.filled & SURVEY_INFO_TIME_BUSY) 195 data[i++] = survey.time_busy; 196 else 197 data[i++] = -1LL; 198 if (survey.filled & SURVEY_INFO_TIME_EXT_BUSY) 199 data[i++] = survey.time_ext_busy; 200 else 201 data[i++] = -1LL; 202 if (survey.filled & SURVEY_INFO_TIME_RX) 203 data[i++] = survey.time_rx; 204 else 205 data[i++] = -1LL; 206 if (survey.filled & SURVEY_INFO_TIME_TX) 207 data[i++] = survey.time_tx; 208 else 209 data[i++] = -1LL; 210 211 if (WARN_ON(i != STA_STATS_LEN)) 212 return; 213 214 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN])); 215 } 216 217 static void ieee80211_get_strings(struct net_device *dev, u32 sset, u8 *data) 218 { 219 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 220 int sz_sta_stats = 0; 221 222 if (sset == ETH_SS_STATS) { 223 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats); 224 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats); 225 } 226 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats])); 227 } 228 229 static int ieee80211_get_regs_len(struct net_device *dev) 230 { 231 return 0; 232 } 233 234 static void ieee80211_get_regs(struct net_device *dev, 235 struct ethtool_regs *regs, 236 void *data) 237 { 238 struct wireless_dev *wdev = dev->ieee80211_ptr; 239 240 regs->version = wdev->wiphy->hw_version; 241 regs->len = 0; 242 } 243 244 const struct ethtool_ops ieee80211_ethtool_ops = { 245 .get_drvinfo = cfg80211_get_drvinfo, 246 .get_regs_len = ieee80211_get_regs_len, 247 .get_regs = ieee80211_get_regs, 248 .get_link = ethtool_op_get_link, 249 .get_ringparam = ieee80211_get_ringparam, 250 .set_ringparam = ieee80211_set_ringparam, 251 .get_strings = ieee80211_get_strings, 252 .get_ethtool_stats = ieee80211_get_stats, 253 .get_sset_count = ieee80211_get_sset_count, 254 }; 255