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 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 };