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![Sriram R](/assets/img/avatar_default.png)
Currently in mac80211 each STA object is represented using sta_info datastructure with the associated STA specific information and drivers access ieee80211_sta part of it. With MLO (Multi Link Operation) support being added in 802.11be standard, though the association is logically with a single Multi Link capable STA, at the physical level communication can happen via different advertised links (uniquely identified by Channel, operating class, BSSID) and hence the need to handle multiple link STA parameters within a composite sta_info object called the MLD STA. The different link STA part of MLD STA are identified using the link address which can be same or different as the MLD STA address and unique link id based on the link vif. To support extension of such a model, the sta_info datastructure is modified to hold multiple link STA objects with link specific params currently within sta_info moved to this new structure. Similarly this is done for ieee80211_sta as well which will be accessed within mac80211 as well as by drivers, hence trivial driver changes are expected to support this. For current non MLO supported drivers, only one link STA is present and link information is accessed via 'deflink' member. For MLO drivers, we still need to define the APIs etc. to get the correct link ID and access the correct part of the station info. Currently in mac80211, all link STA info are accessed directly via deflink. These will be updated to access via link pointers indexed by link id with MLO support patches, with link id being 0 for non MLO supported cases. Except for couple of macro related changes, below spatch takes care of updating mac80211 and driver code to access to the link STA info via deflink. @ieee80211_sta@ struct ieee80211_sta *s; struct sta_info *si; identifier var = {supp_rates, ht_cap, vht_cap, he_cap, he_6ghz_capa, eht_cap, rx_nss, bandwidth, txpwr}; @@ ( s-> - var + deflink.var | si->sta. - var + deflink.var ) @sta_info@ struct sta_info *si; identifier var = {gtk, pcpu_rx_stats, rx_stats, rx_stats_avg, status_stats, tx_stats, cur_max_bandwidth}; @@ ( si-> - var + deflink.var ) Signed-off-by: Sriram R <quic_srirrama@quicinc.com> Link: https://lore.kernel.org/r/1649086883-13246-1-git-send-email-quic_srirrama@quicinc.com [remove MLO-drivers notes from commit message, not clear yet; run spatch] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
246 lines
6.4 KiB
C
246 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* mac80211 ethtool hooks for cfg80211
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*
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* Copied from cfg.c - originally
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* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
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* Copyright 2014 Intel Corporation (Author: Johannes Berg)
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* Copyright (C) 2018 Intel Corporation
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*/
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#include <linux/types.h>
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#include <net/cfg80211.h>
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#include "ieee80211_i.h"
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#include "sta_info.h"
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#include "driver-ops.h"
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static int ieee80211_set_ringparam(struct net_device *dev,
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struct ethtool_ringparam *rp,
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struct kernel_ethtool_ringparam *kernel_rp,
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struct netlink_ext_ack *extack)
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{
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struct ieee80211_local *local = wiphy_priv(dev->ieee80211_ptr->wiphy);
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if (rp->rx_mini_pending != 0 || rp->rx_jumbo_pending != 0)
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return -EINVAL;
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return drv_set_ringparam(local, rp->tx_pending, rp->rx_pending);
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}
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static void ieee80211_get_ringparam(struct net_device *dev,
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struct ethtool_ringparam *rp,
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struct kernel_ethtool_ringparam *kernel_rp,
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struct netlink_ext_ack *extack)
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{
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struct ieee80211_local *local = wiphy_priv(dev->ieee80211_ptr->wiphy);
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memset(rp, 0, sizeof(*rp));
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drv_get_ringparam(local, &rp->tx_pending, &rp->tx_max_pending,
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&rp->rx_pending, &rp->rx_max_pending);
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}
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static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
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"rx_packets", "rx_bytes",
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"rx_duplicates", "rx_fragments", "rx_dropped",
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"tx_packets", "tx_bytes",
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"tx_filtered", "tx_retry_failed", "tx_retries",
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"sta_state", "txrate", "rxrate", "signal",
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"channel", "noise", "ch_time", "ch_time_busy",
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"ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
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};
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#define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
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static int ieee80211_get_sset_count(struct net_device *dev, int sset)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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int rv = 0;
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if (sset == ETH_SS_STATS)
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rv += STA_STATS_LEN;
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rv += drv_get_et_sset_count(sdata, sset);
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if (rv == 0)
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return -EOPNOTSUPP;
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return rv;
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}
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static void ieee80211_get_stats(struct net_device *dev,
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struct ethtool_stats *stats,
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u64 *data)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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struct ieee80211_chanctx_conf *chanctx_conf;
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struct ieee80211_channel *channel;
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struct sta_info *sta;
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struct ieee80211_local *local = sdata->local;
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struct station_info sinfo;
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struct survey_info survey;
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int i, q;
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#define STA_STATS_SURVEY_LEN 7
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memset(data, 0, sizeof(u64) * STA_STATS_LEN);
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#define ADD_STA_STATS(sta) \
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do { \
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data[i++] += sta->rx_stats.packets; \
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data[i++] += sta->rx_stats.bytes; \
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data[i++] += sta->rx_stats.num_duplicates; \
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data[i++] += sta->rx_stats.fragments; \
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data[i++] += sta->rx_stats.dropped; \
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\
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data[i++] += sinfo.tx_packets; \
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data[i++] += sinfo.tx_bytes; \
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data[i++] += sta->status_stats.filtered; \
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data[i++] += sta->status_stats.retry_failed; \
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data[i++] += sta->status_stats.retry_count; \
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} while (0)
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/* For Managed stations, find the single station based on BSSID
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* and use that. For interface types, iterate through all available
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* stations and add stats for any station that is assigned to this
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* network device.
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*/
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mutex_lock(&local->sta_mtx);
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if (sdata->vif.type == NL80211_IFTYPE_STATION) {
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sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
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if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
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goto do_survey;
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memset(&sinfo, 0, sizeof(sinfo));
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sta_set_sinfo(sta, &sinfo, false);
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i = 0;
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ADD_STA_STATS(sta->link[0]);
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data[i++] = sta->sta_state;
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if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE))
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data[i] = 100000ULL *
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cfg80211_calculate_bitrate(&sinfo.txrate);
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i++;
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if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE))
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data[i] = 100000ULL *
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cfg80211_calculate_bitrate(&sinfo.rxrate);
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i++;
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if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG))
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data[i] = (u8)sinfo.signal_avg;
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i++;
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} else {
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list_for_each_entry(sta, &local->sta_list, list) {
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/* Make sure this station belongs to the proper dev */
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if (sta->sdata->dev != dev)
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continue;
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memset(&sinfo, 0, sizeof(sinfo));
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sta_set_sinfo(sta, &sinfo, false);
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i = 0;
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ADD_STA_STATS(sta->link[0]);
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}
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}
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do_survey:
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i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
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/* Get survey stats for current channel */
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survey.filled = 0;
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rcu_read_lock();
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chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
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if (chanctx_conf)
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channel = chanctx_conf->def.chan;
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else
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channel = NULL;
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rcu_read_unlock();
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if (channel) {
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q = 0;
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do {
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survey.filled = 0;
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if (drv_get_survey(local, q, &survey) != 0) {
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survey.filled = 0;
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break;
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}
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q++;
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} while (channel != survey.channel);
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}
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if (survey.filled)
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data[i++] = survey.channel->center_freq;
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else
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data[i++] = 0;
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if (survey.filled & SURVEY_INFO_NOISE_DBM)
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data[i++] = (u8)survey.noise;
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else
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data[i++] = -1LL;
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if (survey.filled & SURVEY_INFO_TIME)
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data[i++] = survey.time;
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else
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data[i++] = -1LL;
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if (survey.filled & SURVEY_INFO_TIME_BUSY)
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data[i++] = survey.time_busy;
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else
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data[i++] = -1LL;
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if (survey.filled & SURVEY_INFO_TIME_EXT_BUSY)
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data[i++] = survey.time_ext_busy;
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else
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data[i++] = -1LL;
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if (survey.filled & SURVEY_INFO_TIME_RX)
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data[i++] = survey.time_rx;
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else
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data[i++] = -1LL;
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if (survey.filled & SURVEY_INFO_TIME_TX)
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data[i++] = survey.time_tx;
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else
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data[i++] = -1LL;
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mutex_unlock(&local->sta_mtx);
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if (WARN_ON(i != STA_STATS_LEN))
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return;
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drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
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}
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static void ieee80211_get_strings(struct net_device *dev, u32 sset, u8 *data)
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{
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struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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int sz_sta_stats = 0;
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if (sset == ETH_SS_STATS) {
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sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
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memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
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}
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drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
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}
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static int ieee80211_get_regs_len(struct net_device *dev)
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{
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return 0;
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}
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static void ieee80211_get_regs(struct net_device *dev,
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struct ethtool_regs *regs,
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void *data)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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regs->version = wdev->wiphy->hw_version;
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regs->len = 0;
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}
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const struct ethtool_ops ieee80211_ethtool_ops = {
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.get_drvinfo = cfg80211_get_drvinfo,
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.get_regs_len = ieee80211_get_regs_len,
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.get_regs = ieee80211_get_regs,
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.get_link = ethtool_op_get_link,
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.get_ringparam = ieee80211_get_ringparam,
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.set_ringparam = ieee80211_set_ringparam,
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.get_strings = ieee80211_get_strings,
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.get_ethtool_stats = ieee80211_get_stats,
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.get_sset_count = ieee80211_get_sset_count,
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};
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