diff options
Diffstat (limited to 'net/mac80211/ht.c')
-rw-r--r-- | net/mac80211/ht.c | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c index 2eb3a409b70f..8c24817cd497 100644 --- a/net/mac80211/ht.c +++ b/net/mac80211/ht.c @@ -140,12 +140,14 @@ bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, const struct ieee80211_ht_cap *ht_cap_ie, struct link_sta_info *link_sta) { + struct ieee80211_bss_conf *link_conf; struct sta_info *sta = link_sta->sta; struct ieee80211_sta_ht_cap ht_cap, own_cap; u8 ampdu_info, tx_mcs_set_cap; int i, max_tx_streams; bool changed; enum ieee80211_sta_rx_bandwidth bw; + enum nl80211_chan_width width; memset(&ht_cap, 0, sizeof(ht_cap)); @@ -248,7 +250,14 @@ bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, memcpy(&link_sta->pub->ht_cap, &ht_cap, sizeof(ht_cap)); - switch (sdata->vif.link_conf[link_sta->link_id]->chandef.width) { + rcu_read_lock(); + link_conf = rcu_dereference(sdata->vif.link_conf[link_sta->link_id]); + if (WARN_ON(!link_conf)) + width = NL80211_CHAN_WIDTH_20_NOHT; + else + width = link_conf->chandef.width; + + switch (width) { default: WARN_ON_ONCE(1); fallthrough; @@ -264,6 +273,7 @@ bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20; break; } + rcu_read_unlock(); link_sta->pub->bandwidth = bw; @@ -540,35 +550,27 @@ int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, return 0; } -void ieee80211_request_smps_mgd_work(struct work_struct *work) -{ - struct ieee80211_link_data *link = - container_of(work, struct ieee80211_link_data, - u.mgd.request_smps_work); - - sdata_lock(link->sdata); - __ieee80211_request_smps_mgd(link->sdata, link->link_id, - link->u.mgd.driver_smps_mode); - sdata_unlock(link->sdata); -} - void ieee80211_request_smps(struct ieee80211_vif *vif, unsigned int link_id, enum ieee80211_smps_mode smps_mode) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); - struct ieee80211_link_data *link = sdata->link[link_id]; + struct ieee80211_link_data *link; if (WARN_ON_ONCE(vif->type != NL80211_IFTYPE_STATION)) return; + rcu_read_lock(); + link = rcu_dereference(sdata->link[link_id]); if (WARN_ON(!link)) - return; + goto out; if (link->u.mgd.driver_smps_mode == smps_mode) - return; + goto out; link->u.mgd.driver_smps_mode = smps_mode; ieee80211_queue_work(&sdata->local->hw, &link->u.mgd.request_smps_work); +out: + rcu_read_unlock(); } /* this might change ... don't want non-open drivers using it */ EXPORT_SYMBOL_GPL(ieee80211_request_smps); |