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TOMOYO Linux Cross Reference
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", "tx_fragments",
 42         "tx_filtered", "tx_retry_failed", "tx_retries",
 43         "beacon_loss", "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_packets;           \
 83                 data[i++] += sta->rx_bytes;             \
 84                 data[i++] += sta->num_duplicates;       \
 85                 data[i++] += sta->rx_fragments;         \
 86                 data[i++] += sta->rx_dropped;           \
 87                                                         \
 88                 data[i++] += sinfo.tx_packets;          \
 89                 data[i++] += sinfo.tx_bytes;            \
 90                 data[i++] += sta->tx_fragments;         \
 91                 data[i++] += sta->tx_filtered_count;    \
 92                 data[i++] += sta->tx_retry_failed;      \
 93                 data[i++] += sta->tx_retry_count;       \
 94                 data[i++] += sta->beacon_loss_count;    \
 95         } while (0)
 96 
 97         /* For Managed stations, find the single station based on BSSID
 98          * and use that.  For interface types, iterate through all available
 99          * stations and add stats for any station that is assigned to this
100          * network device.
101          */
102 
103         mutex_lock(&local->sta_mtx);
104 
105         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
106                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
107 
108                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
109                         goto do_survey;
110 
111                 sinfo.filled = 0;
112                 sta_set_sinfo(sta, &sinfo);
113 
114                 i = 0;
115                 ADD_STA_STATS(sta);
116 
117                 data[i++] = sta->sta_state;
118 
119 
120                 if (sinfo.filled & BIT(NL80211_STA_INFO_TX_BITRATE))
121                         data[i] = 100000 *
122                                 cfg80211_calculate_bitrate(&sinfo.txrate);
123                 i++;
124                 if (sinfo.filled & BIT(NL80211_STA_INFO_RX_BITRATE))
125                         data[i] = 100000 *
126                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
127                 i++;
128 
129                 if (sinfo.filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))
130                         data[i] = (u8)sinfo.signal_avg;
131                 i++;
132         } else {
133                 list_for_each_entry(sta, &local->sta_list, list) {
134                         /* Make sure this station belongs to the proper dev */
135                         if (sta->sdata->dev != dev)
136                                 continue;
137 
138                         sinfo.filled = 0;
139                         sta_set_sinfo(sta, &sinfo);
140                         i = 0;
141                         ADD_STA_STATS(sta);
142                 }
143         }
144 
145 do_survey:
146         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
147         /* Get survey stats for current channel */
148         survey.filled = 0;
149 
150         rcu_read_lock();
151         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
152         if (chanctx_conf)
153                 channel = chanctx_conf->def.chan;
154         else
155                 channel = NULL;
156         rcu_read_unlock();
157 
158         if (channel) {
159                 q = 0;
160                 do {
161                         survey.filled = 0;
162                         if (drv_get_survey(local, q, &survey) != 0) {
163                                 survey.filled = 0;
164                                 break;
165                         }
166                         q++;
167                 } while (channel != survey.channel);
168         }
169 
170         if (survey.filled)
171                 data[i++] = survey.channel->center_freq;
172         else
173                 data[i++] = 0;
174         if (survey.filled & SURVEY_INFO_NOISE_DBM)
175                 data[i++] = (u8)survey.noise;
176         else
177                 data[i++] = -1LL;
178         if (survey.filled & SURVEY_INFO_TIME)
179                 data[i++] = survey.time;
180         else
181                 data[i++] = -1LL;
182         if (survey.filled & SURVEY_INFO_TIME_BUSY)
183                 data[i++] = survey.time_busy;
184         else
185                 data[i++] = -1LL;
186         if (survey.filled & SURVEY_INFO_TIME_EXT_BUSY)
187                 data[i++] = survey.time_ext_busy;
188         else
189                 data[i++] = -1LL;
190         if (survey.filled & SURVEY_INFO_TIME_RX)
191                 data[i++] = survey.time_rx;
192         else
193                 data[i++] = -1LL;
194         if (survey.filled & SURVEY_INFO_TIME_TX)
195                 data[i++] = survey.time_tx;
196         else
197                 data[i++] = -1LL;
198 
199         mutex_unlock(&local->sta_mtx);
200 
201         if (WARN_ON(i != STA_STATS_LEN))
202                 return;
203 
204         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
205 }
206 
207 static void ieee80211_get_strings(struct net_device *dev, u32 sset, u8 *data)
208 {
209         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
210         int sz_sta_stats = 0;
211 
212         if (sset == ETH_SS_STATS) {
213                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
214                 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
215         }
216         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
217 }
218 
219 static int ieee80211_get_regs_len(struct net_device *dev)
220 {
221         return 0;
222 }
223 
224 static void ieee80211_get_regs(struct net_device *dev,
225                                struct ethtool_regs *regs,
226                                void *data)
227 {
228         struct wireless_dev *wdev = dev->ieee80211_ptr;
229 
230         regs->version = wdev->wiphy->hw_version;
231         regs->len = 0;
232 }
233 
234 const struct ethtool_ops ieee80211_ethtool_ops = {
235         .get_drvinfo = cfg80211_get_drvinfo,
236         .get_regs_len = ieee80211_get_regs_len,
237         .get_regs = ieee80211_get_regs,
238         .get_link = ethtool_op_get_link,
239         .get_ringparam = ieee80211_get_ringparam,
240         .set_ringparam = ieee80211_set_ringparam,
241         .get_strings = ieee80211_get_strings,
242         .get_ethtool_stats = ieee80211_get_stats,
243         .get_sset_count = ieee80211_get_sset_count,
244 };
245 

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