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 };
255
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