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wifi: mac80211: Support multi link in ieee80211_recalc_min_chandef()

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Recalculate min channel context for the given or all interface
links, depending on the caller. For a station state change, we
need to recalculate all of them since we don't know which link
(or multiple) it might be on.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Andrei Otcheretianski 2022-06-22 16:15:56 +03:00 committed by Johannes Berg
parent e10b680118
commit 0cbf348a9a
4 changed files with 39 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/mac80211/ieee80211_i.h
View File

@ -2335,7 +2335,8 @@ int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode);
void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
struct ieee80211_link_data *link);
void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
int link_id);
size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,

6
net/mac80211/sta_info.c
View File

@ -780,7 +780,7 @@ static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
* change, this enables driver using the updated channel context right away.
*/
if (sta->sta_state >= IEEE80211_STA_ASSOC) {
ieee80211_recalc_min_chandef(sta->sdata);
ieee80211_recalc_min_chandef(sta->sdata, -1);
if (!sta->sta.support_p2p_ps)
ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
}
@ -2136,7 +2136,7 @@ int sta_info_move_state(struct sta_info *sta,
set_bit(WLAN_STA_AUTH, &sta->_flags);
} else if (sta->sta_state == IEEE80211_STA_ASSOC) {
clear_bit(WLAN_STA_ASSOC, &sta->_flags);
ieee80211_recalc_min_chandef(sta->sdata);
ieee80211_recalc_min_chandef(sta->sdata, -1);
if (!sta->sta.support_p2p_ps)
ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
}
@ -2145,7 +2145,7 @@ int sta_info_move_state(struct sta_info *sta,
if (sta->sta_state == IEEE80211_STA_AUTH) {
set_bit(WLAN_STA_ASSOC, &sta->_flags);
sta->assoc_at = ktime_get_boottime_ns();
ieee80211_recalc_min_chandef(sta->sdata);
ieee80211_recalc_min_chandef(sta->sdata, -1);
if (!sta->sta.support_p2p_ps)
ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
} else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) {

40
net/mac80211/util.c
View File

@ -2839,22 +2839,48 @@ void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
mutex_unlock(&local->chanctx_mtx);
}
void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata)
void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
int link_id)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_chanctx *chanctx;
int i;
mutex_lock(&local->chanctx_mtx);
chanctx_conf = rcu_dereference_protected(sdata->vif.bss_conf.chanctx_conf,
lockdep_is_held(&local->chanctx_mtx));
for (i = 0; i < ARRAY_SIZE(sdata->vif.link_conf); i++) {
struct ieee80211_bss_conf *bss_conf;
if (WARN_ON_ONCE(!chanctx_conf))
goto unlock;
if (link_id >= 0 && link_id != i)
continue;
chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
ieee80211_recalc_chanctx_min_def(local, chanctx);
rcu_read_lock();
bss_conf = rcu_dereference(sdata->vif.link_conf[i]);
if (!bss_conf) {
rcu_read_unlock();
continue;
}
chanctx_conf = rcu_dereference_protected(bss_conf->chanctx_conf,
lockdep_is_held(&local->chanctx_mtx));
/*
* Since we hold the chanctx_mtx (checked above)
* we can take the chanctx_conf pointer out of the
* RCU critical section, it cannot go away without
* the mutex. Just the way we reached it could - in
* theory - go away, but we don't really care and
* it really shouldn't happen anyway.
*/
rcu_read_unlock();
if (WARN_ON_ONCE(!chanctx_conf))
goto unlock;
chanctx = container_of(chanctx_conf, struct ieee80211_chanctx,
conf);
ieee80211_recalc_chanctx_min_def(local, chanctx);
}
unlock:
mutex_unlock(&local->chanctx_mtx);
}

2
net/mac80211/vht.c
View File

@ -731,7 +731,7 @@ void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
opmode, band);
if (changed > 0) {
ieee80211_recalc_min_chandef(sdata);
ieee80211_recalc_min_chandef(sdata, link_sta->link_id);
rate_control_rate_update(local, sband, link_sta->sta,
link_sta->link_id, changed);
}