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Linux/net/mac80211/ethtool.c

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  1 /*
  2  * mac80211 ethtool hooks for cfg80211
  3  *
  4  * Copied from cfg.c - originally
  5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
  6  * Copyright 2014       Intel Corporation (Author: Johannes Berg)
  7  *
  8  * This file is GPLv2 as found in COPYING.
  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                 sinfo.filled = 0;
110                 sta_set_sinfo(sta, &sinfo);
111 
112                 i = 0;
113                 ADD_STA_STATS(sta);
114 
115                 data[i++] = sta->sta_state;
116 
117 
118                 if (sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE))
119                         data[i] = 100000 *
120                                 cfg80211_calculate_bitrate(&sinfo.txrate);
121                 i++;
122                 if (sinfo.filled & BIT(NL80211_STA_INFO_RX_BITRATE))
123                         data[i] = 100000 *
124                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
125                 i++;
126 
127                 if (sinfo.filled & BIT(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                         sinfo.filled = 0;
137                         sta_set_sinfo(sta, &sinfo);
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 };
243 

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