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