net/mac80211/ethtool.c

   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         "sta_state", "txrate", "rxrate", "signal",
  52         "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++] = sta->sta_state;
 124
 125
 126                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))
 127                         data[i] = 100000ULL *
 128                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 129                 i++;
 130                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE))
 131                         data[i] = 100000ULL *
 132                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 133                 i++;
 134
 135                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))
 136                         data[i] = (u8)sinfo.signal_avg;
 137                 i++;
 138         } else {
 139                 list_for_each_entry(sta, &local->sta_list, list) {
 140                         /* Make sure this station belongs to the proper dev */
 141                         if (sta->sdata->dev != dev)
 142                                 continue;
 143
 144                         memset(&sinfo, 0, sizeof(sinfo));
 145                         sta_set_sinfo(sta, &sinfo, false);
 146                         i = 0;
 147                         ADD_STA_STATS(&sta->deflink);
 148                 }
 149         }
 150
 151 do_survey:
 152         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 153         /* Get survey stats for current channel */
 154         survey.filled = 0;
 155
 156         rcu_read_lock();
 157         chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
 158         if (chanctx_conf)
 159                 channel = chanctx_conf->def.chan;
 160         else if (local->open_count > 0 &&
 161                  local->open_count == local->monitors &&
 162                  sdata->vif.type == NL80211_IFTYPE_MONITOR)
 163                 channel = local->monitor_chanreq.oper.chan;
 164         else
 165                 channel = NULL;
 166         rcu_read_unlock();
 167
 168         if (channel) {
 169                 q = 0;
 170                 do {
 171                         survey.filled = 0;
 172                         if (drv_get_survey(local, q, &survey) != 0) {
 173                                 survey.filled = 0;
 174                                 break;
 175                         }
 176                         q++;
 177                 } while (channel != survey.channel);
 178         }
 179
 180         if (survey.filled)
 181                 data[i++] = survey.channel->center_freq;
 182         else
 183                 data[i++] = 0;
 184         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 185                 data[i++] = (u8)survey.noise;
 186         else
 187                 data[i++] = -1LL;
 188         if (survey.filled & SURVEY_INFO_TIME)
 189                 data[i++] = survey.time;
 190         else
 191                 data[i++] = -1LL;
 192         if (survey.filled & SURVEY_INFO_TIME_BUSY)
 193                 data[i++] = survey.time_busy;
 194         else
 195                 data[i++] = -1LL;
 196         if (survey.filled & SURVEY_INFO_TIME_EXT_BUSY)
 197                 data[i++] = survey.time_ext_busy;
 198         else
 199                 data[i++] = -1LL;
 200         if (survey.filled & SURVEY_INFO_TIME_RX)
 201                 data[i++] = survey.time_rx;
 202         else
 203                 data[i++] = -1LL;
 204         if (survey.filled & SURVEY_INFO_TIME_TX)
 205                 data[i++] = survey.time_tx;
 206         else
 207                 data[i++] = -1LL;
 208
 209         if (WARN_ON(i != STA_STATS_LEN))
 210                 return;
 211
 212         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 213 }
 214
 215 static void ieee80211_get_strings(struct net_device *dev, u32 sset, u8 *data)
 216 {
 217         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 218         int sz_sta_stats = 0;
 219
 220         if (sset == ETH_SS_STATS) {
 221                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 222                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
 223         }
 224         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 225 }
 226
 227 static int ieee80211_get_regs_len(struct net_device *dev)
 228 {
 229         return 0;
 230 }
 231
 232 static void ieee80211_get_regs(struct net_device *dev,
 233                                struct ethtool_regs *regs,
 234                                void *data)
 235 {
 236         struct wireless_dev *wdev = dev->ieee80211_ptr;
 237
 238         regs->version = wdev->wiphy->hw_version;
 239         regs->len = 0;
 240 }
 241
 242 const struct ethtool_ops ieee80211_ethtool_ops = {
 243         .get_drvinfo = cfg80211_get_drvinfo,
 244         .get_regs_len = ieee80211_get_regs_len,
 245         .get_regs = ieee80211_get_regs,
 246         .get_link = ethtool_op_get_link,
 247         .get_ringparam = ieee80211_get_ringparam,
 248         .set_ringparam = ieee80211_set_ringparam,
 249         .get_strings = ieee80211_get_strings,
 250         .get_ethtool_stats = ieee80211_get_stats,
 251         .get_sset_count = ieee80211_get_sset_count,
 252 };