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 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++] += sinfo.rx_packets;                  \
  87                 data[i++] += sinfo.rx_bytes;                    \
  88                 data[i++] += (sta)->rx_stats.num_duplicates;    \
  89                 data[i++] += (sta)->rx_stats.fragments;         \
  90                 data[i++] += sinfo.rx_dropped_misc;             \
  91                                                                 \
  92                 data[i++] += sinfo.tx_packets;                  \
  93                 data[i++] += sinfo.tx_bytes;                    \
  94                 data[i++] += (sta)->status_stats.filtered;      \
  95                 data[i++] += sinfo.tx_failed;                   \
  96                 data[i++] += sinfo.tx_retries;                  \
  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->deflink.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->deflink);
 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->deflink);
 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.bss_conf.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 };