From fd0f979a1b67f0889aea24a7c7d2a54d6706a1cf Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 7 Feb 2013 00:14:51 +0100 Subject: mac80211: simplify idle handling Now that we have channel contexts, idle is (pretty much) equivalent to not having a channel context. Change the code to use this relation so that there no longer is a need for a lot of idle recalculate calls everywhere. Signed-off-by: Johannes Berg diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index b5b5076..038f249 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -91,6 +91,10 @@ ieee80211_new_chanctx(struct ieee80211_local *local, list_add_rcu(&ctx->list, &local->chanctx_list); + mutex_lock(&local->mtx); + ieee80211_recalc_idle(local); + mutex_unlock(&local->mtx); + return ctx; } @@ -110,6 +114,10 @@ static void ieee80211_free_chanctx(struct ieee80211_local *local, list_del_rcu(&ctx->list); kfree_rcu(ctx, rcu_head); + + mutex_lock(&local->mtx); + ieee80211_recalc_idle(local); + mutex_unlock(&local->mtx); } static int ieee80211_assign_vif_chanctx(struct ieee80211_sub_if_data *sdata, @@ -128,6 +136,8 @@ static int ieee80211_assign_vif_chanctx(struct ieee80211_sub_if_data *sdata, ctx->refcount++; ieee80211_recalc_txpower(sdata); + sdata->vif.bss_conf.idle = false; + ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); return 0; } @@ -175,6 +185,9 @@ static void ieee80211_unassign_vif_chanctx(struct ieee80211_sub_if_data *sdata, ctx->refcount--; rcu_assign_pointer(sdata->vif.chanctx_conf, NULL); + sdata->vif.bss_conf.idle = true; + ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); + drv_unassign_vif_chanctx(local, sdata, ctx); if (ctx->refcount > 0) { diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 055fa94..2db1f2b 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -1108,10 +1108,6 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, mutex_unlock(&sdata->u.ibss.mtx); - mutex_lock(&sdata->local->mtx); - ieee80211_recalc_idle(sdata->local); - mutex_unlock(&sdata->local->mtx); - /* * 802.11n-2009 9.13.3.1: In an IBSS, the HT Protection field is * reserved, but an HT STA shall protect HT transmissions as though @@ -1209,9 +1205,5 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) mutex_unlock(&sdata->u.ibss.mtx); - mutex_lock(&local->mtx); - ieee80211_recalc_idle(sdata->local); - mutex_unlock(&local->mtx); - return 0; } diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index fafeb30..5635dfc 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -689,9 +689,6 @@ struct ieee80211_sub_if_data { char name[IFNAMSIZ]; - /* to detect idle changes */ - bool old_idle; - /* Fragment table for host-based reassembly */ struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; unsigned int fragment_next; diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 3ece8eb..40ff030 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -78,8 +78,7 @@ void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); } -static u32 ieee80211_idle_off(struct ieee80211_local *local, - const char *reason) +static u32 ieee80211_idle_off(struct ieee80211_local *local) { if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) return 0; @@ -99,106 +98,45 @@ static u32 ieee80211_idle_on(struct ieee80211_local *local) return IEEE80211_CONF_CHANGE_IDLE; } -static u32 __ieee80211_recalc_idle(struct ieee80211_local *local) +void ieee80211_recalc_idle(struct ieee80211_local *local) { - struct ieee80211_sub_if_data *sdata; - int count = 0; - bool working = false, scanning = false; + bool working = false, scanning, active; unsigned int led_trig_start = 0, led_trig_stop = 0; struct ieee80211_roc_work *roc; + u32 change; -#ifdef CONFIG_PROVE_LOCKING - WARN_ON(debug_locks && !lockdep_rtnl_is_held() && - !lockdep_is_held(&local->iflist_mtx)); -#endif lockdep_assert_held(&local->mtx); - list_for_each_entry(sdata, &local->interfaces, list) { - if (!ieee80211_sdata_running(sdata)) { - sdata->vif.bss_conf.idle = true; - continue; - } - - sdata->old_idle = sdata->vif.bss_conf.idle; - - /* do not count disabled managed interfaces */ - if (sdata->vif.type == NL80211_IFTYPE_STATION && - !sdata->u.mgd.associated && - !sdata->u.mgd.auth_data && - !sdata->u.mgd.assoc_data) { - sdata->vif.bss_conf.idle = true; - continue; - } - /* do not count unused IBSS interfaces */ - if (sdata->vif.type == NL80211_IFTYPE_ADHOC && - !sdata->u.ibss.ssid_len) { - sdata->vif.bss_conf.idle = true; - continue; - } - - if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) - continue; - - /* count everything else */ - sdata->vif.bss_conf.idle = false; - count++; - } + active = !list_empty(&local->chanctx_list); if (!local->ops->remain_on_channel) { list_for_each_entry(roc, &local->roc_list, list) { working = true; - roc->sdata->vif.bss_conf.idle = false; + break; } } scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); - list_for_each_entry(sdata, &local->interfaces, list) { - if (sdata->vif.type == NL80211_IFTYPE_MONITOR || - sdata->vif.type == NL80211_IFTYPE_AP_VLAN || - sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) - continue; - if (sdata->old_idle == sdata->vif.bss_conf.idle) - continue; - if (!ieee80211_sdata_running(sdata)) - continue; - ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); - } - if (working || scanning) led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; else led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; - if (count) + if (active) led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; else led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); - if (working) - return ieee80211_idle_off(local, "working"); - if (scanning) - return ieee80211_idle_off(local, "scanning"); - if (!count) - return ieee80211_idle_on(local); + if (working || scanning || active) + change = ieee80211_idle_off(local); else - return ieee80211_idle_off(local, "in use"); - - return 0; -} - -void ieee80211_recalc_idle(struct ieee80211_local *local) -{ - u32 chg; - - mutex_lock(&local->iflist_mtx); - chg = __ieee80211_recalc_idle(local); - mutex_unlock(&local->iflist_mtx); - if (chg) - ieee80211_hw_config(local, chg); + change = ieee80211_idle_on(local); + if (change) + ieee80211_hw_config(local, change); } static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) @@ -692,10 +630,6 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) if (sdata->flags & IEEE80211_SDATA_PROMISC) atomic_inc(&local->iff_promiscs); - mutex_lock(&local->mtx); - hw_reconf_flags |= __ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); - if (coming_up) local->open_count++; @@ -888,10 +822,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, sdata->bss = NULL; - mutex_lock(&local->mtx); - hw_reconf_flags |= __ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); - ieee80211_recalc_ps(local, -1); if (local->open_count == 0) { diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 1e7662c..3bcf393 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1792,7 +1792,6 @@ EXPORT_SYMBOL(ieee80211_ap_probereq_get); static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - struct ieee80211_local *local = sdata->local; u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; mutex_lock(&ifmgd->mtx); @@ -1812,10 +1811,6 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) * but that's not a problem. */ cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); - - mutex_lock(&local->mtx); - ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); } static void ieee80211_beacon_connection_loss_work(struct work_struct *work) @@ -2048,10 +2043,6 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, 0, 0, false, NULL); - mutex_lock(&sdata->local->mtx); - ieee80211_recalc_idle(sdata->local); - mutex_unlock(&sdata->local->mtx); - return RX_MGMT_CFG80211_DEAUTH; } @@ -2079,10 +2070,6 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, 0, 0, false, NULL); - mutex_lock(&sdata->local->mtx); - ieee80211_recalc_idle(sdata->local); - mutex_unlock(&sdata->local->mtx); - return RX_MGMT_CFG80211_DISASSOC; } @@ -2839,7 +2826,6 @@ static void ieee80211_sta_timer(unsigned long data) static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, u8 *bssid, u8 reason, bool tx) { - struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; @@ -2853,10 +2839,6 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, */ cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); - mutex_lock(&local->mtx); - ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); - mutex_lock(&ifmgd->mtx); } @@ -3127,10 +3109,6 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) } mutex_unlock(&ifmgd->mtx); - - mutex_lock(&local->mtx); - ieee80211_recalc_idle(local); - mutex_unlock(&local->mtx); } static void ieee80211_sta_bcn_mon_timer(unsigned long data) @@ -3644,10 +3622,6 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, return -ENOMEM; } - mutex_lock(&local->mtx); - ieee80211_recalc_idle(sdata->local); - mutex_unlock(&local->mtx); - if (new_sta) { u32 rates = 0, basic_rates = 0; bool have_higher_than_11mbit; @@ -4138,10 +4112,6 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, mutex_unlock(&ifmgd->mtx); out: - mutex_lock(&sdata->local->mtx); - ieee80211_recalc_idle(sdata->local); - mutex_unlock(&sdata->local->mtx); - if (sent_frame) __cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); @@ -4182,10 +4152,6 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, __cfg80211_send_disassoc(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); - mutex_lock(&sdata->local->mtx); - ieee80211_recalc_idle(sdata->local); - mutex_unlock(&sdata->local->mtx); - return 0; } -- cgit v0.10.2