diff options
| -rw-r--r-- | net/mac80211/iface.c | 74 |
1 files changed, 49 insertions, 25 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index d0d5f20f1ec4..8c9419595bc8 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -739,8 +739,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, sdata->dev->addr_len); spin_unlock_bh(&local->filter_lock); netif_addr_unlock_bh(sdata->dev); - - ieee80211_configure_filter(local); } del_timer_sync(&local->dynamic_ps_timer); @@ -751,6 +749,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); if (sdata->wdev.cac_started) { + WARN_ON(local->suspended); mutex_lock(&local->iflist_mtx); ieee80211_vif_release_channel(sdata); mutex_unlock(&local->iflist_mtx); @@ -801,14 +800,9 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, if (local->monitors == 0) { local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; - ieee80211_del_virtual_monitor(local); } ieee80211_adjust_monitor_flags(sdata, -1); - ieee80211_configure_filter(local); - mutex_lock(&local->mtx); - ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); break; case NL80211_IFTYPE_P2P_DEVICE: /* relies on synchronize_rcu() below */ @@ -838,27 +832,10 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, /* fall through */ case NL80211_IFTYPE_AP: skb_queue_purge(&sdata->skb_queue); - - if (going_down) - drv_remove_interface(local, sdata); } sdata->bss = NULL; - ieee80211_recalc_ps(local, -1); - - if (local->open_count == 0) { - ieee80211_clear_tx_pending(local); - ieee80211_stop_device(local); - - /* no reconfiguring after stop! */ - hw_reconf_flags = 0; - } - - /* do after stop to avoid reconfiguring when we stop anyway */ - if (hw_reconf_flags) - ieee80211_hw_config(local, hw_reconf_flags); - spin_lock_irqsave(&local->queue_stop_reason_lock, flags); for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { skb_queue_walk_safe(&local->pending[i], skb, tmp) { @@ -871,7 +848,54 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, } spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); - if (local->monitors == local->open_count && local->monitors > 0) + if (local->open_count == 0) + ieee80211_clear_tx_pending(local); + + /* + * If the interface goes down while suspended, presumably because + * the device was unplugged and that happens before our resume, + * then the driver is already unconfigured and the remainder of + * this function isn't needed. + * XXX: what about WoWLAN? If the device has software state, e.g. + * memory allocated, it might expect teardown commands from + * mac80211 here? + */ + if (local->suspended) { + WARN_ON(local->wowlan); + WARN_ON(rtnl_dereference(local->monitor_sdata)); + return; + } + + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP_VLAN: + break; + case NL80211_IFTYPE_MONITOR: + if (local->monitors == 0) + ieee80211_del_virtual_monitor(local); + + mutex_lock(&local->mtx); + ieee80211_recalc_idle(local); + mutex_unlock(&local->mtx); + break; + default: + if (going_down) + drv_remove_interface(local, sdata); + } + + ieee80211_recalc_ps(local, -1); + + if (local->open_count == 0) { + ieee80211_stop_device(local); + + /* no reconfiguring after stop! */ + return; + } + + /* do after stop to avoid reconfiguring when we stop anyway */ + ieee80211_configure_filter(local); + ieee80211_hw_config(local, hw_reconf_flags); + + if (local->monitors == local->open_count) ieee80211_add_virtual_monitor(local); } |