Return-path: Received: from mail-ea0-f169.google.com ([209.85.215.169]:36010 "EHLO mail-ea0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933715Ab3CVPvq (ORCPT ); Fri, 22 Mar 2013 11:51:46 -0400 Received: by mail-ea0-f169.google.com with SMTP id z7so1499378eaf.28 for ; Fri, 22 Mar 2013 08:51:45 -0700 (PDT) From: Karl Beldan To: Johannes Berg Cc: linux-wireless , Karl Beldan , Karl Beldan Subject: [RFC V3 1/2] mac80211: Use a cfg80211_chan_def in ieee80211_hw_conf_chan Date: Fri, 22 Mar 2013 16:48:23 +0100 Message-Id: <1363967304-4394-1-git-send-email-karl.beldan@gmail.com> (sfid-20130322_165152_512870_C297D0D0) Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Karl Beldan Drivers that don't use chanctxes cannot perform VHT association because they still use a "backward compatibility" pair of {ieee80211_channel, nl80211_channel_type} in ieee80211_conf and ieee80211_local. FIXME: - *this only changes mac80211_hwsim for the RFC - *this improperly handles CSA (c.f mlme.c:ieee80211_chswitch_work()) Signed-off-by: Karl Beldan --- drivers/net/wireless/mac80211_hwsim.c | 44 +++++++++++++++--------- include/net/mac80211.h | 15 +++++---- net/mac80211/cfg.c | 7 ++-- net/mac80211/chan.c | 11 +++--- net/mac80211/ieee80211_i.h | 3 +- net/mac80211/main.c | 59 +++++++++++++++++++-------------- net/mac80211/mlme.c | 25 +++++++++----- net/mac80211/scan.c | 6 ++-- net/mac80211/trace.h | 17 ++++------ net/mac80211/tx.c | 4 +-- net/mac80211/util.c | 3 +- 11 files changed, 110 insertions(+), 84 deletions(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index 0064d38..33d23e5 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -1062,11 +1062,13 @@ out: return HRTIMER_NORESTART; } -static const char *hwsim_chantypes[] = { - [NL80211_CHAN_NO_HT] = "noht", - [NL80211_CHAN_HT20] = "ht20", - [NL80211_CHAN_HT40MINUS] = "ht40-", - [NL80211_CHAN_HT40PLUS] = "ht40+", +static const char *hwsim_chanwidths[] = { + [NL80211_CHAN_WIDTH_20_NOHT] = "noht", + [NL80211_CHAN_WIDTH_20] = "ht20", + [NL80211_CHAN_WIDTH_40] = "ht40", + [NL80211_CHAN_WIDTH_80] = "vht80", + [NL80211_CHAN_WIDTH_80P80] = "vht80p80", + [NL80211_CHAN_WIDTH_160] = "vht160", }; static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed) @@ -1080,18 +1082,30 @@ static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed) [IEEE80211_SMPS_DYNAMIC] = "dynamic", }; - wiphy_debug(hw->wiphy, - "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n", - __func__, - conf->channel ? conf->channel->center_freq : 0, - hwsim_chantypes[conf->channel_type], - !!(conf->flags & IEEE80211_CONF_IDLE), - !!(conf->flags & IEEE80211_CONF_PS), - smps_modes[conf->smps_mode]); + if (conf->chandef.chan) + wiphy_debug(hw->wiphy, + "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n", + __func__, + conf->chandef.chan->center_freq, + conf->chandef.width > NL80211_CHAN_WIDTH_20 ? + conf->chandef.center_freq1 : 0, + conf->chandef.width > NL80211_CHAN_WIDTH_40 ? + conf->chandef.center_freq2 : 0, + hwsim_chanwidths[conf->chandef.width], + !!(conf->flags & IEEE80211_CONF_IDLE), + !!(conf->flags & IEEE80211_CONF_PS), + smps_modes[conf->smps_mode]); + else + wiphy_debug(hw->wiphy, + "%s (freq=0 idle=%d ps=%d smps=%s)\n", + __func__, + !!(conf->flags & IEEE80211_CONF_IDLE), + !!(conf->flags & IEEE80211_CONF_PS), + smps_modes[conf->smps_mode]); data->idle = !!(conf->flags & IEEE80211_CONF_IDLE); - data->channel = conf->channel; + data->channel = conf->chandef.chan; WARN_ON(data->channel && channels > 1); @@ -1277,7 +1291,7 @@ static int mac80211_hwsim_get_survey( return -ENOENT; /* Current channel */ - survey->channel = conf->channel; + survey->channel = conf->chandef.chan; /* * Magically conjured noise level --- this is only ok for simulated hardware. diff --git a/include/net/mac80211.h b/include/net/mac80211.h index dd73b8c..0584dd3 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -1003,8 +1003,7 @@ struct ieee80211_conf { u8 long_frame_max_tx_count, short_frame_max_tx_count; - struct ieee80211_channel *channel; - enum nl80211_channel_type channel_type; + struct cfg80211_chan_def chandef; bool radar_enabled; enum ieee80211_smps_mode smps_mode; }; @@ -4205,31 +4204,33 @@ void ieee80211_rate_control_unregister(struct rate_control_ops *ops); static inline bool conf_is_ht20(struct ieee80211_conf *conf) { - return conf->channel_type == NL80211_CHAN_HT20; + return conf->chandef.width == NL80211_CHAN_WIDTH_20; } static inline bool conf_is_ht40_minus(struct ieee80211_conf *conf) { - return conf->channel_type == NL80211_CHAN_HT40MINUS; + return conf->chandef.width == NL80211_CHAN_WIDTH_40 && + conf->chandef.center_freq1 < conf->chandef.chan->center_freq; } static inline bool conf_is_ht40_plus(struct ieee80211_conf *conf) { - return conf->channel_type == NL80211_CHAN_HT40PLUS; + return conf->chandef.width == NL80211_CHAN_WIDTH_40 && + conf->chandef.center_freq1 > conf->chandef.chan->center_freq; } static inline bool conf_is_ht40(struct ieee80211_conf *conf) { - return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf); + return conf->chandef.width == NL80211_CHAN_WIDTH_40; } static inline bool conf_is_ht(struct ieee80211_conf *conf) { - return conf->channel_type != NL80211_CHAN_NO_HT; + return conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT; } static inline enum nl80211_iftype diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index e5c1441..8a59294 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -805,8 +805,7 @@ static int ieee80211_set_monitor_channel(struct wiphy *wiphy, IEEE80211_CHANCTX_EXCLUSIVE); } } else if (local->open_count == local->monitors) { - local->_oper_channel = chandef->chan; - local->_oper_channel_type = cfg80211_get_chandef_type(chandef); + local->_oper_chandef = *chandef; ieee80211_hw_config(local, 0); } @@ -3360,9 +3359,7 @@ static int ieee80211_cfg_get_channel(struct wiphy *wiphy, if (local->use_chanctx) *chandef = local->monitor_chandef; else - cfg80211_chandef_create(chandef, - local->_oper_channel, - local->_oper_channel_type); + *chandef = local->_oper_chandef; ret = 0; } rcu_read_unlock(); diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 78c0d90..8024874 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -22,7 +22,7 @@ static void ieee80211_change_chanctx(struct ieee80211_local *local, drv_change_chanctx(local, ctx, IEEE80211_CHANCTX_CHANGE_WIDTH); if (!local->use_chanctx) { - local->_oper_channel_type = cfg80211_get_chandef_type(chandef); + local->_oper_chandef = *chandef; ieee80211_hw_config(local, 0); } } @@ -77,9 +77,7 @@ ieee80211_new_chanctx(struct ieee80211_local *local, ctx->mode = mode; if (!local->use_chanctx) { - local->_oper_channel_type = - cfg80211_get_chandef_type(chandef); - local->_oper_channel = chandef->chan; + local->_oper_chandef = *chandef; ieee80211_hw_config(local, 0); } else { err = drv_add_chanctx(local, ctx); @@ -106,7 +104,10 @@ static void ieee80211_free_chanctx(struct ieee80211_local *local, WARN_ON_ONCE(ctx->refcount != 0); if (!local->use_chanctx) { - local->_oper_channel_type = NL80211_CHAN_NO_HT; + struct cfg80211_chan_def *chandef = &local->_oper_chandef; + chandef->width = NL80211_CHAN_WIDTH_20_NOHT; + chandef->center_freq1 = chandef->chan->center_freq; + chandef->center_freq2 = 0; ieee80211_hw_config(local, 0); } else { drv_remove_chanctx(local, ctx); diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index ae2d175..9dc2bf4 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1022,8 +1022,7 @@ struct ieee80211_local { struct ieee80211_sub_if_data __rcu *scan_sdata; struct ieee80211_channel *csa_channel; /* For backward compatibility only -- do not use */ - struct ieee80211_channel *_oper_channel; - enum nl80211_channel_type _oper_channel_type; + struct cfg80211_chan_def _oper_chandef; /* Temporary remain-on-channel for off-channel operations */ struct ieee80211_channel *tmp_channel; diff --git a/net/mac80211/main.c b/net/mac80211/main.c index c6f81ec..c71efbe 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -95,42 +95,47 @@ static void ieee80211_reconfig_filter(struct work_struct *work) static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata; - struct ieee80211_channel *chan; + struct cfg80211_chan_def chandef = {}; u32 changed = 0; int power; - enum nl80211_channel_type channel_type; u32 offchannel_flag; offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; + if (local->scan_channel) { - chan = local->scan_channel; + chandef.chan = local->scan_channel; /* If scanning on oper channel, use whatever channel-type * is currently in use. */ - if (chan == local->_oper_channel) - channel_type = local->_oper_channel_type; - else - channel_type = NL80211_CHAN_NO_HT; + if (chandef.chan == local->_oper_chandef.chan) + chandef = local->_oper_chandef; + else { + chandef.width = NL80211_CHAN_WIDTH_20_NOHT; + chandef.center_freq1 = chandef.chan->center_freq; + } } else if (local->tmp_channel) { - chan = local->tmp_channel; - channel_type = NL80211_CHAN_NO_HT; - } else { - chan = local->_oper_channel; - channel_type = local->_oper_channel_type; - } - - if (chan != local->_oper_channel || - channel_type != local->_oper_channel_type) + chandef.chan = local->tmp_channel; + chandef.width = NL80211_CHAN_WIDTH_20_NOHT; + chandef.center_freq1 = chandef.chan->center_freq; + } else + chandef = local->_oper_chandef; + + WARN(!cfg80211_chandef_valid(&chandef), + "control:%d MHz width:%d center: %d/%d MHz", + chandef.chan->center_freq, chandef.width, + chandef.center_freq1, chandef.center_freq2); + + if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef)) local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; else local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; - if (offchannel_flag || chan != local->hw.conf.channel || - channel_type != local->hw.conf.channel_type) { - local->hw.conf.channel = chan; - local->hw.conf.channel_type = channel_type; + if (offchannel_flag || + !cfg80211_chandef_identical(&local->hw.conf.chandef, + &local->_oper_chandef)) { + local->hw.conf.chandef = chandef; changed |= IEEE80211_CONF_CHANGE_CHANNEL; } @@ -146,7 +151,7 @@ static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) changed |= IEEE80211_CONF_CHANGE_SMPS; } - power = chan->max_power; + power = chandef.chan->max_power; rcu_read_lock(); list_for_each_entry_rcu(sdata, &local->interfaces, list) { @@ -738,11 +743,15 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) sband = local->hw.wiphy->bands[band]; if (!sband) continue; - if (!local->use_chanctx && !local->_oper_channel) { + if (!local->use_chanctx && !local->_oper_chandef.chan) { /* init channel we're on */ - local->hw.conf.channel = - local->_oper_channel = &sband->channels[0]; - local->hw.conf.channel_type = NL80211_CHAN_NO_HT; + struct cfg80211_chan_def init_chandef = { + .chan = &sband->channels[0], + .width = NL80211_CHAN_NO_HT, + .center_freq1 = sband->channels[0].center_freq, + .center_freq2 = 0 + }; + local->hw.conf.chandef = local->_oper_chandef = init_chandef; } cfg80211_chandef_create(&local->monitor_chandef, &sband->channels[0], diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 4d383a9..e031c77 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -985,6 +985,7 @@ static void ieee80211_chswitch_work(struct work_struct *work) { struct ieee80211_sub_if_data *sdata = container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); + struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; if (!ieee80211_sdata_running(sdata)) @@ -994,24 +995,32 @@ static void ieee80211_chswitch_work(struct work_struct *work) if (!ifmgd->associated) goto out; - sdata->local->_oper_channel = sdata->local->csa_channel; - if (!sdata->local->ops->channel_switch) { + /* + * FIXME: Here we are downgrading to NL80211_CHAN_WIDTH_20_NOHT + * and don't adjust our ht/vht settings + * This is wrong - we should behave according to the CSA params + */ + local->_oper_chandef.chan = local->csa_channel; + local->_oper_chandef.width = NL80211_CHAN_WIDTH_20_NOHT; + local->_oper_chandef.center_freq1 = local->_oper_chandef.chan->center_freq; + local->_oper_chandef.center_freq2 = 0; + + if (!local->ops->channel_switch) { /* call "hw_config" only if doing sw channel switch */ - ieee80211_hw_config(sdata->local, - IEEE80211_CONF_CHANGE_CHANNEL); + ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); } else { /* update the device channel directly */ - sdata->local->hw.conf.channel = sdata->local->_oper_channel; + local->hw.conf.chandef = local->_oper_chandef; } /* XXX: shouldn't really modify cfg80211-owned data! */ - ifmgd->associated->channel = sdata->local->_oper_channel; + ifmgd->associated->channel = local->_oper_chandef.chan; /* XXX: wait for a beacon first? */ - ieee80211_wake_queues_by_reason(&sdata->local->hw, + ieee80211_wake_queues_by_reason(&local->hw, IEEE80211_MAX_QUEUE_MAP, IEEE80211_QUEUE_STOP_REASON_CSA); - out: +out: ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; mutex_unlock(&ifmgd->mtx); } diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index cb34cbb..581764f 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -384,7 +384,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local, { int i; struct ieee80211_sub_if_data *sdata; - enum ieee80211_band band = local->hw.conf.channel->band; + enum ieee80211_band band = local->hw.conf.chandef.chan->band; u32 tx_flags; tx_flags = IEEE80211_TX_INTFL_OFFCHAN_TX_OK; @@ -401,7 +401,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local, local->scan_req->ssids[i].ssid_len, local->scan_req->ie, local->scan_req->ie_len, local->scan_req->rates[band], false, - tx_flags, local->hw.conf.channel, true); + tx_flags, local->hw.conf.chandef.chan, true); /* * After sending probe requests, wait for probe responses @@ -467,7 +467,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata, if (local->ops->hw_scan) { __set_bit(SCAN_HW_SCANNING, &local->scanning); } else if ((req->n_channels == 1) && - (req->channels[0] == local->_oper_channel)) { + (req->channels[0] == local->_oper_chandef.chan)) { /* * If we are scanning only on the operating channel * then we do not need to stop normal activities diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h index c589979..dcf8444 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -33,9 +33,9 @@ __field(u32, center_freq1) \ __field(u32, center_freq2) #define CHANDEF_ASSIGN(c) \ - __entry->control_freq = (c)->chan->center_freq; \ - __entry->chan_width = (c)->width; \ - __entry->center_freq1 = (c)->center_freq1; \ + __entry->control_freq = (c)->chan ? (c)->chan->center_freq : 0; \ + __entry->chan_width = (c)->width; \ + __entry->center_freq1 = (c)->center_freq1; \ __entry->center_freq2 = (c)->center_freq2; #define CHANDEF_PR_FMT " control:%d MHz width:%d center: %d/%d MHz" #define CHANDEF_PR_ARG __entry->control_freq, __entry->chan_width, \ @@ -286,8 +286,7 @@ TRACE_EVENT(drv_config, __field(u16, listen_interval) __field(u8, long_frame_max_tx_count) __field(u8, short_frame_max_tx_count) - __field(int, center_freq) - __field(int, channel_type) + CHANDEF_ENTRY __field(int, smps) ), @@ -303,15 +302,13 @@ TRACE_EVENT(drv_config, local->hw.conf.long_frame_max_tx_count; __entry->short_frame_max_tx_count = local->hw.conf.short_frame_max_tx_count; - __entry->center_freq = local->hw.conf.channel ? - local->hw.conf.channel->center_freq : 0; - __entry->channel_type = local->hw.conf.channel_type; + CHANDEF_ASSIGN(&local->hw.conf.chandef) __entry->smps = local->hw.conf.smps_mode; ), TP_printk( - LOCAL_PR_FMT " ch:%#x freq:%d", - LOCAL_PR_ARG, __entry->changed, __entry->center_freq + LOCAL_PR_FMT " ch:%#x" CHANDEF_PR_FMT, + LOCAL_PR_ARG, __entry->changed, CHANDEF_PR_ARG ) ); diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 2a6ae80..38ffa1c 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1709,7 +1709,7 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, if (chanctx_conf) chan = chanctx_conf->def.chan; else if (!local->use_chanctx) - chan = local->_oper_channel; + chan = local->_oper_chandef.chan; else goto fail_rcu; @@ -1843,7 +1843,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, * This is the exception! WDS style interfaces are prohibited * when channel contexts are in used so this must be valid */ - band = local->hw.conf.channel->band; + band = local->hw.conf.chandef.chan->band; break; #ifdef CONFIG_MAC80211_MESH case NL80211_IFTYPE_MESH_POINT: diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 90cc2b8..1734cd2 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2171,8 +2171,7 @@ void ieee80211_dfs_radar_detected_work(struct work_struct *work) /* currently not handled */ WARN_ON(1); else { - cfg80211_chandef_create(&chandef, local->hw.conf.channel, - local->hw.conf.channel_type); + chandef = local->hw.conf.chandef; cfg80211_radar_event(local->hw.wiphy, &chandef, GFP_KERNEL); } } -- 1.7.10.GIT