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// SPDX-License-Identifier: GPL-2.0-only
/*
* mac80211 ethtool hooks for cfg80211
*
* Copied from cfg.c - originally
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2014 Intel Corporation (Author: Johannes Berg)
* Copyright (C) 2018, 2022 Intel Corporation
*/
#include <linux/types.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
#include "sta_info.h"
#include "driver-ops.h"
static int ieee80211_set_ringparam(struct net_device *dev,
struct ethtool_ringparam *rp,
struct kernel_ethtool_ringparam *kernel_rp,
struct netlink_ext_ack *extack)
{
struct ieee80211_local *local = wiphy_priv(dev->ieee80211_ptr->wiphy);
if (rp->rx_mini_pending != 0 || rp->rx_jumbo_pending != 0)
return -EINVAL;
return drv_set_ringparam(local, rp->tx_pending, rp->rx_pending);
}
static void ieee80211_get_ringparam(struct net_device *dev,
struct ethtool_ringparam *rp,
struct kernel_ethtool_ringparam *kernel_rp,
struct netlink_ext_ack *extack)
{
struct ieee80211_local *local = wiphy_priv(dev->ieee80211_ptr->wiphy);
memset(rp, 0, sizeof(*rp));
drv_get_ringparam(local, &rp->tx_pending, &rp->tx_max_pending,
&rp->rx_pending, &rp->rx_max_pending);
}
static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
"rx_packets", "rx_bytes",
"rx_duplicates", "rx_fragments", "rx_dropped",
"tx_packets", "tx_bytes",
"tx_filtered", "tx_retry_failed", "tx_retries",
"sta_state", "txrate", "rxrate", "signal",
"channel", "noise", "ch_time", "ch_time_busy",
"ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
};
#define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
static int ieee80211_get_sset_count(struct net_device *dev, int sset)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
int rv = 0;
if (sset == ETH_SS_STATS)
rv += STA_STATS_LEN;
rv += drv_get_et_sset_count(sdata, sset);
if (rv == 0)
return -EOPNOTSUPP;
return rv;
}
static void ieee80211_get_stats(struct net_device *dev,
struct ethtool_stats *stats,
u64 *data)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_channel *channel;
struct sta_info *sta;
struct ieee80211_local *local = sdata->local;
struct station_info sinfo;
struct survey_info survey;
int i, q;
#define STA_STATS_SURVEY_LEN 7
memset(data, 0, sizeof(u64) * STA_STATS_LEN);
#define ADD_STA_STATS(sta) \
do { \
data[i++] += sinfo.rx_packets; \
data[i++] += sinfo.rx_bytes; \
data[i++] += (sta)->rx_stats.num_duplicates; \
data[i++] += (sta)->rx_stats.fragments; \
data[i++] += sinfo.rx_dropped_misc; \
\
data[i++] += sinfo.tx_packets; \
data[i++] += sinfo.tx_bytes; \
data[i++] += (sta)->status_stats.filtered; \
data[i++] += sinfo.tx_failed; \
data[i++] += sinfo.tx_retries; \
} while (0)
/* For Managed stations, find the single station based on BSSID
* and use that. For interface types, iterate through all available
* stations and add stats for any station that is assigned to this
* network device.
*/
mutex_lock(&local->sta_mtx);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
sta = sta_info_get_bss(sdata, sdata->deflink.u.mgd.bssid);
if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
goto do_survey;
memset(&sinfo, 0, sizeof(sinfo));
sta_set_sinfo(sta, &sinfo, false);
i = 0;
ADD_STA_STATS(&sta->deflink);
data[i++] = sta->sta_state;
if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))
data[i] = 100000ULL *
cfg80211_calculate_bitrate(&sinfo.txrate);
i++;
if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE))
data[i] = 100000ULL *
cfg80211_calculate_bitrate(&sinfo.rxrate);
i++;
if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))
data[i] = (u8)sinfo.signal_avg;
i++;
} else {
list_for_each_entry(sta, &local->sta_list, list) {
/* Make sure this station belongs to the proper dev */
if (sta->sdata->dev != dev)
continue;
memset(&sinfo, 0, sizeof(sinfo));
sta_set_sinfo(sta, &sinfo, false);
i = 0;
ADD_STA_STATS(&sta->deflink);
}
}
do_survey:
i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
/* Get survey stats for current channel */
survey.filled = 0;
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
if (chanctx_conf)
channel = chanctx_conf->def.chan;
else
channel = NULL;
rcu_read_unlock();
if (channel) {
q = 0;
do {
survey.filled = 0;
if (drv_get_survey(local, q, &survey) != 0) {
survey.filled = 0;
break;
}
q++;
} while (channel != survey.channel);
}
if (survey.filled)
data[i++] = survey.channel->center_freq;
else
data[i++] = 0;
if (survey.filled & SURVEY_INFO_NOISE_DBM)
data[i++] = (u8)survey.noise;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_TIME)
data[i++] = survey.time;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_TIME_BUSY)
data[i++] = survey.time_busy;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_TIME_EXT_BUSY)
data[i++] = survey.time_ext_busy;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_TIME_RX)
data[i++] = survey.time_rx;
else
data[i++] = -1LL;
if (survey.filled & SURVEY_INFO_TIME_TX)
data[i++] = survey.time_tx;
else
data[i++] = -1LL;
mutex_unlock(&local->sta_mtx);
if (WARN_ON(i != STA_STATS_LEN))
return;
drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
}
static void ieee80211_get_strings(struct net_device *dev, u32 sset, u8 *data)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
int sz_sta_stats = 0;
if (sset == ETH_SS_STATS) {
sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
}
drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
}
static int ieee80211_get_regs_len(struct net_device *dev)
{
return 0;
}
static void ieee80211_get_regs(struct net_device *dev,
struct ethtool_regs *regs,
void *data)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
regs->version = wdev->wiphy->hw_version;
regs->len = 0;
}
const struct ethtool_ops ieee80211_ethtool_ops = {
.get_drvinfo = cfg80211_get_drvinfo,
.get_regs_len = ieee80211_get_regs_len,
.get_regs = ieee80211_get_regs,
.get_link = ethtool_op_get_link,
.get_ringparam = ieee80211_get_ringparam,
.set_ringparam = ieee80211_set_ringparam,
.get_strings = ieee80211_get_strings,
.get_ethtool_stats = ieee80211_get_stats,
.get_sset_count = ieee80211_get_sset_count,
};
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