diff options
Diffstat (limited to 'net/mac80211')
-rw-r--r-- | net/mac80211/cfg.c | 248 | ||||
-rw-r--r-- | net/mac80211/chan.c | 152 | ||||
-rw-r--r-- | net/mac80211/ibss.c | 70 | ||||
-rw-r--r-- | net/mac80211/ieee80211_i.h | 74 | ||||
-rw-r--r-- | net/mac80211/iface.c | 28 | ||||
-rw-r--r-- | net/mac80211/main.c | 43 | ||||
-rw-r--r-- | net/mac80211/mesh.c | 41 | ||||
-rw-r--r-- | net/mac80211/mesh_plink.c | 10 | ||||
-rw-r--r-- | net/mac80211/mlme.c | 129 | ||||
-rw-r--r-- | net/mac80211/offchannel.c | 3 | ||||
-rw-r--r-- | net/mac80211/pm.c | 2 | ||||
-rw-r--r-- | net/mac80211/rate.h | 12 | ||||
-rw-r--r-- | net/mac80211/scan.c | 4 | ||||
-rw-r--r-- | net/mac80211/sta_info.c | 12 | ||||
-rw-r--r-- | net/mac80211/tx.c | 183 | ||||
-rw-r--r-- | net/mac80211/util.c | 41 |
16 files changed, 586 insertions, 466 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 70a5d26..09c9062 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -372,10 +372,11 @@ static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx) { + enum ieee80211_band band = ieee80211_get_sdata_band(sta->sdata); + if (!(rate->flags & RATE_INFO_FLAGS_MCS)) { struct ieee80211_supported_band *sband; - sband = sta->local->hw.wiphy->bands[ - sta->local->oper_channel->band]; + sband = sta->local->hw.wiphy->bands[band]; rate->legacy = sband->bitrates[idx].bitrate; } else rate->mcs = idx; @@ -532,6 +533,8 @@ static void ieee80211_get_et_stats(struct wiphy *wiphy, u64 *data) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_channel *channel; struct sta_info *sta; struct ieee80211_local *local = sdata->local; struct station_info sinfo; @@ -607,19 +610,26 @@ static void ieee80211_get_et_stats(struct wiphy *wiphy, do_survey: i = STA_STATS_LEN - STA_STATS_SURVEY_LEN; /* Get survey stats for current channel */ - q = 0; - while (true) { - survey.filled = 0; - if (drv_get_survey(local, q, &survey) != 0) { - survey.filled = 0; - break; - } + survey.filled = 0; - if (survey.channel && - (local->oper_channel->center_freq == - survey.channel->center_freq)) - break; - q++; + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (chanctx_conf) + channel = chanctx_conf->channel; + else + channel = NULL; + rcu_read_unlock(); + + if (channel) { + q = 0; + do { + survey.filled = 0; + if (drv_get_survey(local, q, &survey) != 0) { + survey.filled = 0; + break; + } + q++; + } while (channel != survey.channel); } if (survey.filled) @@ -724,47 +734,42 @@ static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, return ret; } -static int ieee80211_set_channel(struct wiphy *wiphy, - struct net_device *netdev, - struct ieee80211_channel *chan, - enum nl80211_channel_type channel_type) +static int ieee80211_set_monitor_channel(struct wiphy *wiphy, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type) { struct ieee80211_local *local = wiphy_priv(wiphy); - struct ieee80211_sub_if_data *sdata = NULL; - - if (netdev) - sdata = IEEE80211_DEV_TO_SUB_IF(netdev); - - switch (ieee80211_get_channel_mode(local, NULL)) { - case CHAN_MODE_HOPPING: - return -EBUSY; - case CHAN_MODE_FIXED: - if (local->oper_channel != chan || - (!sdata && local->_oper_channel_type != channel_type)) - return -EBUSY; - if (!sdata && local->_oper_channel_type == channel_type) - return 0; - break; - case CHAN_MODE_UNDEFINED: - break; - } - - if (!ieee80211_set_channel_type(local, sdata, channel_type)) - return -EBUSY; + struct ieee80211_sub_if_data *sdata; + int ret = 0; - local->oper_channel = chan; + if (local->monitor_channel == chan && + local->monitor_channel_type == channel_type) + return 0; - /* auto-detects changes */ - ieee80211_hw_config(local, 0); + mutex_lock(&local->iflist_mtx); + if (local->use_chanctx) { + sdata = rcu_dereference_protected( + local->monitor_sdata, + lockdep_is_held(&local->iflist_mtx)); + if (sdata) { + ieee80211_vif_release_channel(sdata); + ret = ieee80211_vif_use_channel( + sdata, chan, channel_type, + IEEE80211_CHANCTX_EXCLUSIVE); + } + } else if (local->open_count == local->monitors) { + local->_oper_channel = chan; + local->_oper_channel_type = channel_type; + ieee80211_hw_config(local, 0); + } - return 0; -} + if (ret == 0) { + local->monitor_channel = chan; + local->monitor_channel_type = channel_type; + } + mutex_unlock(&local->iflist_mtx); -static int ieee80211_set_monitor_channel(struct wiphy *wiphy, - struct ieee80211_channel *chan, - enum nl80211_channel_type channel_type) -{ - return ieee80211_set_channel(wiphy, NULL, chan, channel_type); + return ret; } static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, @@ -879,8 +884,9 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, if (old) return -EALREADY; - err = ieee80211_set_channel(wiphy, dev, params->channel, - params->channel_type); + err = ieee80211_vif_use_channel(sdata, params->channel, + params->channel_type, + IEEE80211_CHANCTX_SHARED); if (err) return err; @@ -963,6 +969,8 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) sta_info_flush(sdata->local, sdata); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); + ieee80211_vif_release_channel(sdata); + return 0; } @@ -1019,9 +1027,10 @@ static int sta_apply_parameters(struct ieee80211_local *local, int i, j; struct ieee80211_supported_band *sband; struct ieee80211_sub_if_data *sdata = sta->sdata; + enum ieee80211_band band = ieee80211_get_sdata_band(sdata); u32 mask, set; - sband = local->hw.wiphy->bands[local->oper_channel->band]; + sband = local->hw.wiphy->bands[band]; mask = params->sta_flags_mask; set = params->sta_flags_set; @@ -1136,7 +1145,7 @@ static int sta_apply_parameters(struct ieee80211_local *local, rates |= BIT(j); } } - sta->sta.supp_rates[local->oper_channel->band] = rates; + sta->sta.supp_rates[band] = rates; } if (params->ht_capa) @@ -1664,8 +1673,9 @@ static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, if (err) return err; - err = ieee80211_set_channel(wiphy, dev, setup->channel, - setup->channel_type); + err = ieee80211_vif_use_channel(sdata, setup->channel, + setup->channel_type, + IEEE80211_CHANCTX_SHARED); if (err) return err; @@ -1679,6 +1689,7 @@ static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); ieee80211_stop_mesh(sdata); + ieee80211_vif_release_channel(sdata); return 0; } @@ -1688,10 +1699,14 @@ static int ieee80211_change_bss(struct wiphy *wiphy, struct net_device *dev, struct bss_parameters *params) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + enum ieee80211_band band; u32 changed = 0; - sdata = IEEE80211_DEV_TO_SUB_IF(dev); + if (!rtnl_dereference(sdata->u.ap.beacon)) + return -ENOENT; + + band = ieee80211_get_sdata_band(sdata); if (params->use_cts_prot >= 0) { sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; @@ -1704,7 +1719,7 @@ static int ieee80211_change_bss(struct wiphy *wiphy, } if (!sdata->vif.bss_conf.use_short_slot && - sdata->local->oper_channel->band == IEEE80211_BAND_5GHZ) { + band == IEEE80211_BAND_5GHZ) { sdata->vif.bss_conf.use_short_slot = true; changed |= BSS_CHANGED_ERP_SLOT; } @@ -1718,9 +1733,7 @@ static int ieee80211_change_bss(struct wiphy *wiphy, if (params->basic_rates) { int i, j; u32 rates = 0; - struct ieee80211_local *local = wiphy_priv(wiphy); - struct ieee80211_supported_band *sband = - wiphy->bands[local->oper_channel->band]; + struct ieee80211_supported_band *sband = wiphy->bands[band]; for (i = 0; i < params->basic_rates_len; i++) { int rate = (params->basic_rates[i] & 0x7f) * 5; @@ -1872,20 +1885,6 @@ static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_assoc_request *req) { - struct ieee80211_local *local = wiphy_priv(wiphy); - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - switch (ieee80211_get_channel_mode(local, sdata)) { - case CHAN_MODE_HOPPING: - return -EBUSY; - case CHAN_MODE_FIXED: - if (local->oper_channel == req->bss->channel) - break; - return -EBUSY; - case CHAN_MODE_UNDEFINED: - break; - } - return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); } @@ -1904,30 +1903,12 @@ static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ibss_params *params) { - struct ieee80211_local *local = wiphy_priv(wiphy); - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - switch (ieee80211_get_channel_mode(local, sdata)) { - case CHAN_MODE_HOPPING: - return -EBUSY; - case CHAN_MODE_FIXED: - if (!params->channel_fixed) - return -EBUSY; - if (local->oper_channel == params->channel) - break; - return -EBUSY; - case CHAN_MODE_UNDEFINED: - break; - } - - return ieee80211_ibss_join(sdata, params); + return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); } static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) { - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - return ieee80211_ibss_leave(sdata); + return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); } static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) @@ -1971,9 +1952,13 @@ static int ieee80211_set_tx_power(struct wiphy *wiphy, enum nl80211_tx_power_setting type, int mbm) { struct ieee80211_local *local = wiphy_priv(wiphy); - struct ieee80211_channel *chan = local->oper_channel; + struct ieee80211_channel *chan = local->_oper_channel; u32 changes = 0; + /* FIXME */ + if (local->use_chanctx) + return -EOPNOTSUPP; + switch (type) { case NL80211_TX_POWER_AUTOMATIC: local->user_power_level = -1; @@ -2518,10 +2503,20 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, /* Check if the operating channel is the requested channel */ if (!need_offchan) { - need_offchan = chan != local->oper_channel; - if (channel_type_valid && - channel_type != local->_oper_channel_type) + struct ieee80211_chanctx_conf *chanctx_conf; + + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + + if (chanctx_conf) { + need_offchan = chan != chanctx_conf->channel; + if (channel_type_valid && + channel_type != chanctx_conf->channel_type) + need_offchan = true; + } else { need_offchan = true; + } + rcu_read_unlock(); } if (need_offchan && !offchan) { @@ -2670,7 +2665,7 @@ static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) u16 capab; capab = 0; - if (local->oper_channel->band != IEEE80211_BAND_2GHZ) + if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ) return capab; if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) @@ -2702,7 +2697,7 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, u16 status_code, struct sk_buff *skb) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_local *local = sdata->local; + enum ieee80211_band band = ieee80211_get_sdata_band(sdata); struct ieee80211_tdls_data *tf; tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); @@ -2722,10 +2717,8 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, tf->u.setup_req.capability = cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); - ieee80211_add_srates_ie(sdata, skb, false, - local->oper_channel->band); - ieee80211_add_ext_srates_ie(sdata, skb, false, - local->oper_channel->band); + ieee80211_add_srates_ie(sdata, skb, false, band); + ieee80211_add_ext_srates_ie(sdata, skb, false, band); ieee80211_tdls_add_ext_capab(skb); break; case WLAN_TDLS_SETUP_RESPONSE: @@ -2738,10 +2731,8 @@ ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, tf->u.setup_resp.capability = cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); - ieee80211_add_srates_ie(sdata, skb, false, - local->oper_channel->band); - ieee80211_add_ext_srates_ie(sdata, skb, false, - local->oper_channel->band); + ieee80211_add_srates_ie(sdata, skb, false, band); + ieee80211_add_ext_srates_ie(sdata, skb, false, band); ieee80211_tdls_add_ext_capab(skb); break; case WLAN_TDLS_SETUP_CONFIRM: @@ -2779,7 +2770,7 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, u16 status_code, struct sk_buff *skb) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_local *local = sdata->local; + enum ieee80211_band band = ieee80211_get_sdata_band(sdata); struct ieee80211_mgmt *mgmt; mgmt = (void *)skb_put(skb, 24); @@ -2802,10 +2793,8 @@ ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, mgmt->u.action.u.tdls_discover_resp.capability = cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata)); - ieee80211_add_srates_ie(sdata, skb, false, - local->oper_channel->band); - ieee80211_add_ext_srates_ie(sdata, skb, false, - local->oper_channel->band); + ieee80211_add_srates_ie(sdata, skb, false, band); + ieee80211_add_ext_srates_ie(sdata, skb, false, band); ieee80211_tdls_add_ext_capab(skb); break; default: @@ -2985,12 +2974,19 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, bool qos; struct ieee80211_tx_info *info; struct sta_info *sta; + struct ieee80211_chanctx_conf *chanctx_conf; + enum ieee80211_band band; rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + return -EINVAL; + } + band = chanctx_conf->channel->band; sta = sta_info_get(sdata, peer); if (sta) { qos = test_sta_flag(sta, WLAN_STA_WME); - rcu_read_unlock(); } else { rcu_read_unlock(); return -ENOLINK; @@ -3008,8 +3004,10 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, } skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); - if (!skb) + if (!skb) { + rcu_read_unlock(); return -ENOMEM; + } skb->dev = dev; @@ -3034,8 +3032,9 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, nullfunc->qos_ctrl = cpu_to_le16(7); local_bh_disable(); - ieee80211_xmit(sdata, skb); + ieee80211_xmit(sdata, skb, band); local_bh_enable(); + rcu_read_unlock(); *cookie = (unsigned long) skb; return 0; @@ -3045,10 +3044,19 @@ static struct ieee80211_channel * ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev, enum nl80211_channel_type *type) { - struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_channel *chan = NULL; + + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (chanctx_conf) { + *type = chanctx_conf->channel_type; + chan = chanctx_conf->channel; + } + rcu_read_unlock(); - *type = local->_oper_channel_type; - return local->oper_channel; + return chan; } #ifdef CONFIG_PM diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 1a8dee4..41e1aa6 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -7,106 +7,6 @@ #include "ieee80211_i.h" #include "driver-ops.h" -static enum ieee80211_chan_mode -__ieee80211_get_channel_mode(struct ieee80211_local *local, - struct ieee80211_sub_if_data *ignore) -{ - struct ieee80211_sub_if_data *sdata; - - lockdep_assert_held(&local->iflist_mtx); - - list_for_each_entry(sdata, &local->interfaces, list) { - if (sdata == ignore) - continue; - - if (!ieee80211_sdata_running(sdata)) - continue; - - switch (sdata->vif.type) { - case NL80211_IFTYPE_MONITOR: - continue; - case NL80211_IFTYPE_STATION: - if (!sdata->u.mgd.associated) - continue; - break; - case NL80211_IFTYPE_ADHOC: - if (!sdata->u.ibss.ssid_len) - continue; - if (!sdata->u.ibss.fixed_channel) - return CHAN_MODE_HOPPING; - break; - case NL80211_IFTYPE_AP_VLAN: - /* will also have _AP interface */ - continue; - case NL80211_IFTYPE_AP: - if (!sdata->u.ap.beacon) - continue; - break; - case NL80211_IFTYPE_MESH_POINT: - if (!sdata->wdev.mesh_id_len) - continue; - break; - default: - break; - } - - return CHAN_MODE_FIXED; - } - - return CHAN_MODE_UNDEFINED; -} - -enum ieee80211_chan_mode -ieee80211_get_channel_mode(struct ieee80211_local *local, - struct ieee80211_sub_if_data *ignore) -{ - enum ieee80211_chan_mode mode; - - mutex_lock(&local->iflist_mtx); - mode = __ieee80211_get_channel_mode(local, ignore); - mutex_unlock(&local->iflist_mtx); - - return mode; -} - -static enum nl80211_channel_type -ieee80211_get_superchan(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata) -{ - enum nl80211_channel_type superchan = NL80211_CHAN_NO_HT; - struct ieee80211_sub_if_data *tmp; - - mutex_lock(&local->iflist_mtx); - list_for_each_entry(tmp, &local->interfaces, list) { - if (tmp == sdata) - continue; - - if (!ieee80211_sdata_running(tmp)) - continue; - - switch (tmp->vif.bss_conf.channel_type) { - case NL80211_CHAN_NO_HT: - case NL80211_CHAN_HT20: - if (superchan > tmp->vif.bss_conf.channel_type) - break; - - superchan = tmp->vif.bss_conf.channel_type; - break; - case NL80211_CHAN_HT40PLUS: - WARN_ON(superchan == NL80211_CHAN_HT40MINUS); - superchan = NL80211_CHAN_HT40PLUS; - break; - case NL80211_CHAN_HT40MINUS: - WARN_ON(superchan == NL80211_CHAN_HT40PLUS); - superchan = NL80211_CHAN_HT40MINUS; - break; - } - } - mutex_unlock(&local->iflist_mtx); - - return superchan; -} - static bool ieee80211_channel_types_are_compatible(enum nl80211_channel_type chantype1, enum nl80211_channel_type chantype2, @@ -149,26 +49,6 @@ ieee80211_channel_types_are_compatible(enum nl80211_channel_type chantype1, return true; } -bool ieee80211_set_channel_type(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata, - enum nl80211_channel_type chantype) -{ - enum nl80211_channel_type superchan; - enum nl80211_channel_type compatchan; - - superchan = ieee80211_get_superchan(local, sdata); - if (!ieee80211_channel_types_are_compatible(superchan, chantype, - &compatchan)) - return false; - - local->_oper_channel_type = compatchan; - - if (sdata) - sdata->vif.bss_conf.channel_type = chantype; - - return true; -} - static void ieee80211_change_chantype(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, enum nl80211_channel_type chantype) @@ -178,6 +58,11 @@ static void ieee80211_change_chantype(struct ieee80211_local *local, ctx->conf.channel_type = chantype; drv_change_chanctx(local, ctx, IEEE80211_CHANCTX_CHANGE_CHANNEL_TYPE); + + if (!local->use_chanctx) { + local->_oper_channel_type = chantype; + ieee80211_hw_config(local, 0); + } } static struct ieee80211_chanctx * @@ -235,10 +120,16 @@ ieee80211_new_chanctx(struct ieee80211_local *local, ctx->conf.channel_type = channel_type; ctx->mode = mode; - err = drv_add_chanctx(local, ctx); - if (err) { - kfree(ctx); - return ERR_PTR(err); + if (!local->use_chanctx) { + local->_oper_channel_type = channel_type; + local->_oper_channel = channel; + ieee80211_hw_config(local, 0); + } else { + err = drv_add_chanctx(local, ctx); + if (err) { + kfree(ctx); + return ERR_PTR(err); + } } list_add(&ctx->list, &local->chanctx_list); @@ -253,7 +144,12 @@ static void ieee80211_free_chanctx(struct ieee80211_local *local, WARN_ON_ONCE(ctx->refcount != 0); - drv_remove_chanctx(local, ctx); + if (!local->use_chanctx) { + local->_oper_channel_type = NL80211_CHAN_NO_HT; + ieee80211_hw_config(local, 0); + } else { + drv_remove_chanctx(local, ctx); + } list_del(&ctx->list); kfree_rcu(ctx, rcu_head); @@ -359,6 +255,8 @@ int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, struct ieee80211_chanctx *ctx; int ret; + WARN_ON(sdata->dev && netif_carrier_ok(sdata->dev)); + mutex_lock(&local->chanctx_mtx); __ieee80211_vif_release_channel(sdata); @@ -370,6 +268,8 @@ int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, goto out; } + sdata->vif.bss_conf.channel_type = channel_type; + ret = ieee80211_assign_vif_chanctx(sdata, ctx); if (ret) { /* if assign fails refcount stays the same */ @@ -385,6 +285,8 @@ int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata) { + WARN_ON(sdata->dev && netif_carrier_ok(sdata->dev)); + mutex_lock(&sdata->local->chanctx_mtx); __ieee80211_vif_release_channel(sdata); mutex_unlock(&sdata->local->chanctx_mtx); diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 5f3620f..34d9235 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -26,7 +26,6 @@ #include "rate.h" #define IEEE80211_SCAN_INTERVAL (2 * HZ) -#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) @@ -76,21 +75,22 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IBSS); } - memcpy(ifibss->bssid, bssid, ETH_ALEN); - sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0; - local->oper_channel = chan; channel_type = ifibss->channel_type; if (!cfg80211_can_beacon_sec_chan(local->hw.wiphy, chan, channel_type)) channel_type = NL80211_CHAN_HT20; - if (!ieee80211_set_channel_type(local, sdata, channel_type)) { - /* can only fail due to HT40+/- mismatch */ - channel_type = NL80211_CHAN_HT20; - WARN_ON(!ieee80211_set_channel_type(local, sdata, - NL80211_CHAN_HT20)); + + ieee80211_vif_release_channel(sdata); + if (ieee80211_vif_use_channel(sdata, chan, channel_type, + ifibss->fixed_channel ? + IEEE80211_CHANCTX_SHARED : + IEEE80211_CHANCTX_EXCLUSIVE)) { + sdata_info(sdata, "Failed to join IBSS, no channel context\n"); + return; } - ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); + + memcpy(ifibss->bssid, bssid, ETH_ALEN); sband = local->hw.wiphy->bands[chan->band]; @@ -294,7 +294,8 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct ieee80211_local *local = sdata->local; struct sta_info *sta; - int band = local->oper_channel->band; + struct ieee80211_chanctx_conf *chanctx_conf; + int band; /* * XXX: Consider removing the least recently used entry and @@ -317,6 +318,13 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, return NULL; } + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON_ONCE(!chanctx_conf)) + return NULL; + band = chanctx_conf->channel->band; + rcu_read_unlock(); + sta = sta_info_alloc(sdata, addr, GFP_KERNEL); if (!sta) { rcu_read_lock(); @@ -517,7 +525,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, goto put_bss; /* different channel */ - if (cbss->channel != local->oper_channel) + if (sdata->u.ibss.fixed_channel && + sdata->u.ibss.channel != cbss->channel) goto put_bss; /* different SSID */ @@ -592,7 +601,8 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; struct ieee80211_local *local = sdata->local; struct sta_info *sta; - int band = local->oper_channel->band; + struct ieee80211_chanctx_conf *chanctx_conf; + int band; /* * XXX: Consider removing the least recently used entry and @@ -610,6 +620,15 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, if (!ether_addr_equal(bssid, sdata->u.ibss.bssid)) return; + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON_ONCE(!chanctx_conf)) { + rcu_read_unlock(); + return; + } + band = chanctx_conf->channel->band; + rcu_read_unlock(); + sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); if (!sta) return; @@ -784,18 +803,8 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) int interval = IEEE80211_SCAN_INTERVAL; if (time_after(jiffies, ifibss->ibss_join_req + - IEEE80211_IBSS_JOIN_TIMEOUT)) { - if (!(local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS)) { - ieee80211_sta_create_ibss(sdata); - return; - } - sdata_info(sdata, "IBSS not allowed on %d MHz\n", - local->oper_channel->center_freq); - - /* No IBSS found - decrease scan interval and continue - * scanning. */ - interval = IEEE80211_SCAN_INTERVAL_SLOW; - } + IEEE80211_IBSS_JOIN_TIMEOUT)) + ieee80211_sta_create_ibss(sdata); mod_timer(&ifibss->timer, round_jiffies(jiffies + interval)); @@ -1086,17 +1095,6 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, sdata->u.ibss.channel_type = params->channel_type; sdata->u.ibss.fixed_channel = params->channel_fixed; - /* fix ourselves to that channel now already */ - if (params->channel_fixed) { - sdata->local->oper_channel = params->channel; - if (!ieee80211_set_channel_type(sdata->local, sdata, - params->channel_type)) { - mutex_unlock(&sdata->u.ibss.mtx); - kfree_skb(skb); - return -EINVAL; - } - } - if (params->ie) { sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len, GFP_KERNEL); diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 8fa00ad..6660118 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -773,6 +773,21 @@ struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) return container_of(p, struct ieee80211_sub_if_data, vif); } +static inline enum ieee80211_band +ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) +{ + enum ieee80211_band band = IEEE80211_BAND_2GHZ; + struct ieee80211_chanctx_conf *chanctx_conf; + + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (!WARN_ON(!chanctx_conf)) + band = chanctx_conf->channel->band; + rcu_read_unlock(); + + return band; +} + enum sdata_queue_type { IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0, IEEE80211_SDATA_QUEUE_AGG_START = 1, @@ -1006,8 +1021,10 @@ struct ieee80211_local { enum mac80211_scan_state next_scan_state; struct delayed_work scan_work; 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 ieee80211_channel *oper_channel, *csa_channel; /* Temporary remain-on-channel for off-channel operations */ struct ieee80211_channel *tmp_channel; @@ -1121,6 +1138,8 @@ struct ieee80211_local { /* virtual monitor interface */ struct ieee80211_sub_if_data __rcu *monitor_sdata; + struct ieee80211_channel *monitor_channel; + enum nl80211_channel_type monitor_channel_type; }; static inline struct ieee80211_sub_if_data * @@ -1423,11 +1442,42 @@ void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int ke gfp_t gfp); void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, bool bss_notify); -void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); +void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, + enum ieee80211_band band); + +void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, int tid, + enum ieee80211_band band); + +static inline void +ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, int tid, + enum ieee80211_band band) +{ + rcu_read_lock(); + __ieee80211_tx_skb_tid_band(sdata, skb, tid, band); + rcu_read_unlock(); +} -void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb, int tid); -static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, +static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, int tid) +{ + struct ieee80211_chanctx_conf *chanctx_conf; + + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + kfree_skb(skb); + return; + } + + __ieee80211_tx_skb_tid_band(sdata, skb, tid, + chanctx_conf->channel->band); + rcu_read_unlock(); +} + +static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) { /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ @@ -1494,7 +1544,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, const u8 *ssid, size_t ssid_len, const u8 *ie, size_t ie_len, u32 ratemask, bool directed, bool no_cck, - struct ieee80211_channel *channel); + struct ieee80211_channel *channel, bool scan); void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, const size_t supp_rates_len, @@ -1525,18 +1575,6 @@ int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, enum ieee80211_band band); /* channel management */ -enum ieee80211_chan_mode { - CHAN_MODE_UNDEFINED, - CHAN_MODE_HOPPING, - CHAN_MODE_FIXED, -}; - -enum ieee80211_chan_mode -ieee80211_get_channel_mode(struct ieee80211_local *local, - struct ieee80211_sub_if_data *ignore); -bool ieee80211_set_channel_type(struct ieee80211_local *local, - struct ieee80211_sub_if_data *sdata, - enum nl80211_channel_type chantype); enum nl80211_channel_type ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper); diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 6f8a73c..7cb8382 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -380,6 +380,15 @@ static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) goto out_unlock; } + ret = ieee80211_vif_use_channel(sdata, local->monitor_channel, + local->monitor_channel_type, + IEEE80211_CHANCTX_EXCLUSIVE); + if (ret) { + drv_remove_interface(local, sdata); + kfree(sdata); + goto out_unlock; + } + rcu_assign_pointer(local->monitor_sdata, sdata); out_unlock: mutex_unlock(&local->iflist_mtx); @@ -403,6 +412,8 @@ static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) rcu_assign_pointer(local->monitor_sdata, NULL); synchronize_net(); + ieee80211_vif_release_channel(sdata); + drv_remove_interface(local, sdata); kfree(sdata); @@ -665,7 +676,6 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, *tmp; u32 hw_reconf_flags = 0; int i; - enum nl80211_channel_type orig_ct; clear_bit(SDATA_STATE_RUNNING, &sdata->state); @@ -837,14 +847,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, hw_reconf_flags = 0; } - /* Re-calculate channel-type, in case there are multiple vifs - * on different channel types. - */ - orig_ct = local->_oper_channel_type; - ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT); - /* do after stop to avoid reconfiguring when we stop anyway */ - if (hw_reconf_flags || (orig_ct != local->_oper_channel_type)) + if (hw_reconf_flags) ieee80211_hw_config(local, hw_reconf_flags); spin_lock_irqsave(&local->queue_stop_reason_lock, flags); @@ -1282,11 +1286,6 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, if (type == ieee80211_vif_type_p2p(&sdata->vif)) return 0; - /* Setting ad-hoc mode on non-IBSS channel is not supported. */ - if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && - type == NL80211_IFTYPE_ADHOC) - return -EOPNOTSUPP; - if (ieee80211_sdata_running(sdata)) { ret = ieee80211_runtime_change_iftype(sdata, type); if (ret) @@ -1298,9 +1297,6 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, } /* reset some values that shouldn't be kept across type changes */ - sdata->vif.bss_conf.basic_rates = - ieee80211_mandatory_rates(sdata->local, - sdata->local->oper_channel->band); sdata->drop_unencrypted = 0; if (type == NL80211_IFTYPE_STATION) sdata->u.mgd.use_4addr = false; diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 0dd1ea2..9cb6280 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -93,23 +93,21 @@ static void ieee80211_reconfig_filter(struct work_struct *work) ieee80211_configure_filter(local); } -int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) +static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) { struct ieee80211_channel *chan; - int ret = 0; + u32 changed = 0; int power; enum nl80211_channel_type channel_type; u32 offchannel_flag; - might_sleep(); - offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; if (local->scan_channel) { chan = local->scan_channel; /* If scanning on oper channel, use whatever channel-type * is currently in use. */ - if (chan == local->oper_channel) + if (chan == local->_oper_channel) channel_type = local->_oper_channel_type; else channel_type = NL80211_CHAN_NO_HT; @@ -117,11 +115,11 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) chan = local->tmp_channel; channel_type = local->tmp_channel_type; } else { - chan = local->oper_channel; + chan = local->_oper_channel; channel_type = local->_oper_channel_type; } - if (chan != local->oper_channel || + if (chan != local->_oper_channel || channel_type != local->_oper_channel_type) local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; else @@ -164,6 +162,21 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) local->hw.conf.power_level = power; } + return changed; +} + +int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) +{ + int ret = 0; + + might_sleep(); + + if (!local->use_chanctx) + changed |= ieee80211_hw_conf_chan(local); + else + changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL | + IEEE80211_CONF_CHANGE_POWER); + if (changed && local->open_count) { ret = drv_config(local, changed); /* @@ -775,12 +788,16 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) sband = local->hw.wiphy->bands[band]; if (!sband) continue; - if (!local->oper_channel) { + if (!local->use_chanctx && !local->_oper_channel) { /* init channel we're on */ local->hw.conf.channel = - local->oper_channel = &sband->channels[0]; + local->_oper_channel = &sband->channels[0]; local->hw.conf.channel_type = NL80211_CHAN_NO_HT; } + if (!local->monitor_channel) { + local->monitor_channel = &sband->channels[0]; + local->monitor_channel_type = NL80211_CHAN_NO_HT; + } channels += sband->n_channels; if (max_bitrates < sband->n_bitrates) @@ -810,19 +827,13 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); - /* - * mac80211 doesn't support more than 1 channel, and also not more - * than one IBSS interface - */ + /* mac80211 doesn't support more than one IBSS interface right now */ for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { const struct ieee80211_iface_combination *c; int j; c = &hw->wiphy->iface_combinations[i]; - if (c->num_different_channels > 1) - return -EINVAL; - for (j = 0; j < c->n_limits; j++) if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && c->limits[j].max > 1) diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index ff0296c..19725e0 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -97,7 +97,7 @@ bool mesh_matches_local(struct ieee80211_sub_if_data *sdata, (ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth))) goto mismatch; - ieee80211_sta_get_rates(local, ie, local->oper_channel->band, + ieee80211_sta_get_rates(local, ie, ieee80211_get_sdata_band(sdata), &basic_rates); if (sdata->vif.bss_conf.basic_rates != basic_rates) @@ -355,12 +355,22 @@ int mesh_add_ds_params_ie(struct sk_buff *skb, { struct ieee80211_local *local = sdata->local; struct ieee80211_supported_band *sband; - struct ieee80211_channel *chan = local->oper_channel; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_channel *chan; u8 *pos; if (skb_tailroom(skb) < 3) return -ENOMEM; + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + return -EINVAL; + } + chan = chanctx_conf->channel; + rcu_read_unlock(); + sband = local->hw.wiphy->bands[chan->band]; if (sband->band == IEEE80211_BAND_2GHZ) { pos = skb_put(skb, 2 + 1); @@ -376,10 +386,11 @@ int mesh_add_ht_cap_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata) { struct ieee80211_local *local = sdata->local; + enum ieee80211_band band = ieee80211_get_sdata_band(sdata); struct ieee80211_supported_band *sband; u8 *pos; - sband = local->hw.wiphy->bands[local->oper_channel->band]; + sband = local->hw.wiphy->bands[band]; if (!sband->ht_cap.ht_supported || sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) return 0; @@ -397,14 +408,26 @@ int mesh_add_ht_oper_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata) { struct ieee80211_local *local = sdata->local; - struct ieee80211_channel *channel = local->oper_channel; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_channel *channel; enum nl80211_channel_type channel_type = - sdata->vif.bss_conf.channel_type; - struct ieee80211_supported_band *sband = - local->hw.wiphy->bands[channel->band]; - struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap; + sdata->vif.bss_conf.channel_type; + struct ieee80211_supported_band *sband; + struct ieee80211_sta_ht_cap *ht_cap; u8 *pos; + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + return -EINVAL; + } + channel = chanctx_conf->channel; + rcu_read_unlock(); + + sband = local->hw.wiphy->bands[channel->band]; + ht_cap = &sband->ht_cap; + if (!ht_cap->ht_supported || channel_type == NL80211_CHAN_NO_HT) return 0; @@ -610,7 +633,7 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL; sdata->vif.bss_conf.basic_rates = ieee80211_mandatory_rates(sdata->local, - sdata->local->oper_channel->band); + ieee80211_get_sdata_band(sdata)); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_HT | diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index 3ab34d8..8a8b459 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -252,6 +252,8 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, mgmt->u.action.u.self_prot.action_code = action; if (action != WLAN_SP_MESH_PEERING_CLOSE) { + enum ieee80211_band band = ieee80211_get_sdata_band(sdata); + /* capability info */ pos = skb_put(skb, 2); memset(pos, 0, 2); @@ -260,10 +262,8 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, pos = skb_put(skb, 2); memcpy(pos + 2, &plid, 2); } - if (ieee80211_add_srates_ie(sdata, skb, true, - local->oper_channel->band) || - ieee80211_add_ext_srates_ie(sdata, skb, true, - local->oper_channel->band) || + if (ieee80211_add_srates_ie(sdata, skb, true, band) || + ieee80211_add_ext_srates_ie(sdata, skb, true, band) || mesh_add_rsn_ie(skb, sdata) || mesh_add_meshid_ie(skb, sdata) || mesh_add_meshconf_ie(skb, sdata)) @@ -343,7 +343,7 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata, struct ieee802_11_elems *elems) { struct ieee80211_local *local = sdata->local; - enum ieee80211_band band = local->oper_channel->band; + enum ieee80211_band band = ieee80211_get_sdata_band(sdata); struct ieee80211_supported_band *sband; u32 rates, basic_rates = 0; struct sta_info *sta; diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index e714ed8..4add500 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -178,20 +178,30 @@ static u32 ieee80211_config_ht_tx(struct ieee80211_sub_if_data *sdata, { struct ieee80211_local *local = sdata->local; struct ieee80211_supported_band *sband; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_channel *chan; struct sta_info *sta; u32 changed = 0; u16 ht_opmode; bool disable_40 = false; - sband = local->hw.wiphy->bands[local->oper_channel->band]; + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + return 0; + } + chan = chanctx_conf->channel; + rcu_read_unlock(); + sband = local->hw.wiphy->bands[chan->band]; switch (sdata->vif.bss_conf.channel_type) { case NL80211_CHAN_HT40PLUS: - if (local->oper_channel->flags & IEEE80211_CHAN_NO_HT40PLUS) + if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) disable_40 = true; break; case NL80211_CHAN_HT40MINUS: - if (local->oper_channel->flags & IEEE80211_CHAN_NO_HT40MINUS) + if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) disable_40 = true; break; default: @@ -359,11 +369,21 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) int i, count, rates_len, supp_rates_len; u16 capab; struct ieee80211_supported_band *sband; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_channel *chan; u32 rates = 0; lockdep_assert_held(&ifmgd->mtx); - sband = local->hw.wiphy->bands[local->oper_channel->band]; + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + return; + } + chan = chanctx_conf->channel; + rcu_read_unlock(); + sband = local->hw.wiphy->bands[chan->band]; if (assoc_data->supp_rates_len) { /* @@ -485,7 +505,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) *pos++ = WLAN_EID_PWR_CAPABILITY; *pos++ = 2; *pos++ = 0; /* min tx power */ - *pos++ = local->oper_channel->max_power; /* max tx power */ + *pos++ = chan->max_power; /* max tx power */ /* 2. supported channels */ /* TODO: get this in reg domain format */ @@ -523,7 +543,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) if (!(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, - sband, local->oper_channel, ifmgd->ap_smps); + sband, chan, ifmgd->ap_smps); if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) ieee80211_add_vht_ie(sdata, skb, sband); @@ -657,18 +677,18 @@ static void ieee80211_chswitch_work(struct work_struct *work) if (!ifmgd->associated) goto out; - sdata->local->oper_channel = sdata->local->csa_channel; + sdata->local->_oper_channel = sdata->local->csa_channel; if (!sdata->local->ops->channel_switch) { /* call "hw_config" only if doing sw channel switch */ ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL); } else { /* update the device channel directly */ - sdata->local->hw.conf.channel = sdata->local->oper_channel; + sdata->local->hw.conf.channel = sdata->local->_oper_channel; } /* XXX: shouldn't really modify cfg80211-owned data! */ - ifmgd->associated->channel = sdata->local->oper_channel; + ifmgd->associated->channel = sdata->local->_oper_channel; /* XXX: wait for a beacon first? */ ieee80211_wake_queues_by_reason(&sdata->local->hw, @@ -680,11 +700,8 @@ static void ieee80211_chswitch_work(struct work_struct *work) void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) { - struct ieee80211_sub_if_data *sdata; - struct ieee80211_if_managed *ifmgd; - - sdata = vif_to_sdata(vif); - ifmgd = &sdata->u.mgd; + struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; trace_api_chswitch_done(sdata, success); if (!success) { @@ -723,6 +740,7 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num, cbss->channel->band); + struct ieee80211_chanctx *chanctx; ASSERT_MGD_MTX(ifmgd); @@ -748,10 +766,34 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, return; } - sdata->local->csa_channel = new_ch; - ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; + if (sdata->local->use_chanctx) { + sdata_info(sdata, + "not handling channel switch with channel contexts\n"); + ieee80211_queue_work(&sdata->local->hw, + &ifmgd->csa_connection_drop_work); + } + + mutex_lock(&sdata->local->chanctx_mtx); + if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) { + mutex_unlock(&sdata->local->chanctx_mtx); + return; + } + chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf), + struct ieee80211_chanctx, conf); + if (chanctx->refcount > 1) { + sdata_info(sdata, + "channel switch with multiple interfaces on the same channel, disconnecting\n"); + ieee80211_queue_work(&sdata->local->hw, + &ifmgd->csa_connection_drop_work); + mutex_unlock(&sdata->local->chanctx_mtx); + return; + } + mutex_unlock(&sdata->local->chanctx_mtx); + + sdata->local->csa_channel = new_ch; + if (sw_elem->mode) ieee80211_stop_queues_by_reason(&sdata->local->hw, IEEE80211_QUEUE_STOP_REASON_CSA); @@ -1280,7 +1322,7 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, } use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); - if (sdata->local->oper_channel->band == IEEE80211_BAND_5GHZ) + if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) use_short_slot = true; if (use_protection != bss_conf->use_cts_prot) { @@ -1465,9 +1507,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; ieee80211_bss_info_change_notify(sdata, changed); - /* channel(_type) changes are handled by ieee80211_hw_config */ - WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT)); - ieee80211_hw_config(local, 0); + ieee80211_vif_release_channel(sdata); /* disassociated - set to defaults now */ ieee80211_set_wmm_default(sdata, false); @@ -1589,7 +1629,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL, 0, (u32) -1, true, false, - ifmgd->associated->channel); + ifmgd->associated->channel, false); } ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); @@ -1692,8 +1732,7 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, ssid_len = ssid[1]; skb = ieee80211_build_probe_req(sdata, cbss->bssid, - (u32) -1, - sdata->local->oper_channel, + (u32) -1, cbss->channel, ssid + 2, ssid_len, NULL, 0, true); @@ -1804,6 +1843,7 @@ static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, memset(sdata->u.mgd.bssid, 0, ETH_ALEN); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); + ieee80211_vif_release_channel(sdata); } cfg80211_put_bss(auth_data->bss); @@ -2030,6 +2070,7 @@ static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, memset(sdata->u.mgd.bssid, 0, ETH_ALEN); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); + ieee80211_vif_release_channel(sdata); } kfree(assoc_data); @@ -2091,7 +2132,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, return false; } - sband = local->hw.wiphy->bands[local->oper_channel->band]; + sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, @@ -2369,6 +2410,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, size_t baselen; struct ieee802_11_elems elems; struct ieee80211_local *local = sdata->local; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_channel *chan; u32 changed = 0; bool erp_valid, directed_tim = false; u8 erp_value = 0; @@ -2382,8 +2425,19 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, if (baselen > len) return; - if (rx_status->freq != local->oper_channel->center_freq) + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (!chanctx_conf) { + rcu_read_unlock(); return; + } + + if (rx_status->freq != chanctx_conf->channel->center_freq) { + rcu_read_unlock(); + return; + } + chan = chanctx_conf->channel; + rcu_read_unlock(); if (ifmgd->assoc_data && !ifmgd->assoc_data->have_beacon && ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { @@ -2546,7 +2600,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) { struct ieee80211_supported_band *sband; - sband = local->hw.wiphy->bands[local->oper_channel->band]; + sband = local->hw.wiphy->bands[chan->band]; changed |= ieee80211_config_ht_tx(sdata, elems.ht_operation, bssid, true); @@ -2555,7 +2609,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, if (elems.country_elem && elems.pwr_constr_elem && mgmt->u.probe_resp.capab_info & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT)) - ieee80211_handle_pwr_constr(sdata, local->oper_channel, + ieee80211_handle_pwr_constr(sdata, chan, elems.country_elem, elems.country_elem_len, elems.pwr_constr_elem); @@ -2728,7 +2782,7 @@ static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) */ ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1], NULL, 0, (u32) -1, true, false, - auth_data->bss->channel); + auth_data->bss->channel, false); } auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; @@ -3118,20 +3172,9 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, } } - if (!ieee80211_set_channel_type(local, sdata, channel_type)) { - /* can only fail due to HT40+/- mismatch */ - channel_type = NL80211_CHAN_HT20; - sdata_info(sdata, - "disabling 40 MHz due to multi-vif mismatch\n"); - ifmgd->flags |= IEEE80211_STA_DISABLE_40MHZ; - WARN_ON(!ieee80211_set_channel_type(local, sdata, - channel_type)); - } - - local->oper_channel = cbss->channel; - ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); - - return 0; + ieee80211_vif_release_channel(sdata); + return ieee80211_vif_use_channel(sdata, cbss->channel, channel_type, + IEEE80211_CHANCTX_SHARED); } static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, @@ -3201,7 +3244,7 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, sdata->vif.bss_conf.basic_rates = basic_rates; /* cf. IEEE 802.11 9.2.12 */ - if (local->oper_channel->band == IEEE80211_BAND_2GHZ && + if (cbss->channel->band == IEEE80211_BAND_2GHZ && have_higher_than_11mbit) sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; else diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c index 9c52fc4..c349f3a 100644 --- a/net/mac80211/offchannel.c +++ b/net/mac80211/offchannel.c @@ -199,7 +199,8 @@ void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc) if (roc->mgmt_tx_cookie) { if (!WARN_ON(!roc->frame)) { - ieee80211_tx_skb(roc->sdata, roc->frame); + ieee80211_tx_skb_tid_band(roc->sdata, roc->frame, 7, + roc->chan->band); roc->frame = NULL; } } else { diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c index 5c572e7..9f404ac 100644 --- a/net/mac80211/pm.c +++ b/net/mac80211/pm.c @@ -135,6 +135,8 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); + /* the interface is leaving the channel and is removed */ + ieee80211_vif_release_channel(sdata); drv_remove_interface(local, sdata); } diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h index 10de668..ec198ef 100644 --- a/net/mac80211/rate.h +++ b/net/mac80211/rate.h @@ -52,11 +52,21 @@ static inline void rate_control_rate_init(struct sta_info *sta) struct ieee80211_sta *ista = &sta->sta; void *priv_sta = sta->rate_ctrl_priv; struct ieee80211_supported_band *sband; + struct ieee80211_chanctx_conf *chanctx_conf; if (!ref) return; - sband = local->hw.wiphy->bands[local->oper_channel->band]; + rcu_read_lock(); + + chanctx_conf = rcu_dereference(sta->sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + return; + } + + sband = local->hw.wiphy->bands[chanctx_conf->channel->band]; + rcu_read_unlock(); ref->ops->rate_init(ref->priv, sband, ista, priv_sta); set_sta_flag(sta, WLAN_STA_RATE_CONTROL); diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index fdaa505..987c75d4 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -421,7 +421,7 @@ static void ieee80211_scan_state_send_probe(struct ieee80211_local *local, local->scan_req->ie, local->scan_req->ie_len, local->scan_req->rates[band], false, local->scan_req->no_cck, - local->hw.conf.channel); + local->hw.conf.channel, true); /* * After sending probe requests, wait for probe responses @@ -484,7 +484,7 @@ 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_channel)) { /* * If we are scanning only on the operating channel * then we do not need to stop normal activities diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 797dd36..fa639f4 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -1008,6 +1008,7 @@ static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, __le16 fc; bool qos = test_sta_flag(sta, WLAN_STA_WME); struct ieee80211_tx_info *info; + struct ieee80211_chanctx_conf *chanctx_conf; if (qos) { fc = cpu_to_le16(IEEE80211_FTYPE_DATA | @@ -1057,7 +1058,16 @@ static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, drv_allow_buffered_frames(local, sta, BIT(tid), 1, reason, false); - ieee80211_xmit(sdata, skb); + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + kfree_skb(skb); + return; + } + + ieee80211_xmit(sdata, skb, chanctx_conf->channel->band); + rcu_read_unlock(); } static void diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index c9bf83f..eee448a 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -324,11 +324,6 @@ static void purge_old_ps_buffers(struct ieee80211_local *local) struct ieee80211_sub_if_data *sdata; struct sta_info *sta; - /* - * virtual interfaces are protected by RCU - */ - rcu_read_lock(); - list_for_each_entry_rcu(sdata, &local->interfaces, list) { struct ieee80211_if_ap *ap; if (sdata->vif.type != NL80211_IFTYPE_AP) @@ -360,8 +355,6 @@ static void purge_old_ps_buffers(struct ieee80211_local *local) } } - rcu_read_unlock(); - local->total_ps_buffered = total; ps_dbg_hw(&local->hw, "PS buffers full - purged %d frames\n", purged); } @@ -1372,7 +1365,8 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx) * Returns false if the frame couldn't be transmitted but was queued instead. */ static bool ieee80211_tx(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb, bool txpending) + struct sk_buff *skb, bool txpending, + enum ieee80211_band band) { struct ieee80211_local *local = sdata->local; struct ieee80211_tx_data tx; @@ -1386,20 +1380,18 @@ static bool ieee80211_tx(struct ieee80211_sub_if_data *sdata, return true; } - rcu_read_lock(); - /* initialises tx */ led_len = skb->len; res_prepare = ieee80211_tx_prepare(sdata, &tx, skb); if (unlikely(res_prepare == TX_DROP)) { ieee80211_free_txskb(&local->hw, skb); - goto out; + return true; } else if (unlikely(res_prepare == TX_QUEUED)) { - goto out; + return true; } - info->band = local->hw.conf.channel->band; + info->band = band; /* set up hw_queue value early */ if (!(info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) || @@ -1410,8 +1402,7 @@ static bool ieee80211_tx(struct ieee80211_sub_if_data *sdata, if (!invoke_tx_handlers(&tx)) result = __ieee80211_tx(local, &tx.skbs, led_len, tx.sta, txpending); - out: - rcu_read_unlock(); + return result; } @@ -1446,7 +1437,8 @@ static int ieee80211_skb_resize(struct ieee80211_sub_if_data *sdata, return 0; } -void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) +void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, + enum ieee80211_band band) { struct ieee80211_local *local = sdata->local; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); @@ -1454,8 +1446,6 @@ void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) int headroom; bool may_encrypt; - rcu_read_lock(); - may_encrypt = !(info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT); headroom = local->tx_headroom; @@ -1466,7 +1456,6 @@ void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) if (ieee80211_skb_resize(sdata, skb, headroom, may_encrypt)) { ieee80211_free_txskb(&local->hw, skb); - rcu_read_unlock(); return; } @@ -1478,13 +1467,11 @@ void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) !is_multicast_ether_addr(hdr->addr1) && mesh_nexthop_resolve(skb, sdata)) { /* skb queued: don't free */ - rcu_read_unlock(); return; } ieee80211_set_qos_hdr(sdata, skb); - ieee80211_tx(sdata, skb, false); - rcu_read_unlock(); + ieee80211_tx(sdata, skb, false, band); } static bool ieee80211_parse_tx_radiotap(struct sk_buff *skb) @@ -1574,7 +1561,8 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_channel *chan = local->hw.conf.channel; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_channel *chan; struct ieee80211_radiotap_header *prthdr = (struct ieee80211_radiotap_header *)skb->data; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); @@ -1583,26 +1571,6 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, u16 len_rthdr; int hdrlen; - /* - * Frame injection is not allowed if beaconing is not allowed - * or if we need radar detection. Beaconing is usually not allowed when - * the mode or operation (Adhoc, AP, Mesh) does not support DFS. - * Passive scan is also used in world regulatory domains where - * your country is not known and as such it should be treated as - * NO TX unless the channel is explicitly allowed in which case - * your current regulatory domain would not have the passive scan - * flag. - * - * Since AP mode uses monitor interfaces to inject/TX management - * frames we can make AP mode the exception to this rule once it - * supports radar detection as its implementation can deal with - * radar detection by itself. We can do that later by adding a - * monitor flag interfaces used for AP support. - */ - if ((chan->flags & (IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_RADAR | - IEEE80211_CHAN_PASSIVE_SCAN))) - goto fail; - /* check for not even having the fixed radiotap header part */ if (unlikely(skb->len < sizeof(struct ieee80211_radiotap_header))) goto fail; /* too short to be possibly valid */ @@ -1688,11 +1656,45 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, } } - ieee80211_xmit(sdata, skb); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (!chanctx_conf) { + tmp_sdata = rcu_dereference(local->monitor_sdata); + if (tmp_sdata) + chanctx_conf = + rcu_dereference(tmp_sdata->vif.chanctx_conf); + } + if (!chanctx_conf) + goto fail_rcu; + + chan = chanctx_conf->channel; + + /* + * Frame injection is not allowed if beaconing is not allowed + * or if we need radar detection. Beaconing is usually not allowed when + * the mode or operation (Adhoc, AP, Mesh) does not support DFS. + * Passive scan is also used in world regulatory domains where + * your country is not known and as such it should be treated as + * NO TX unless the channel is explicitly allowed in which case + * your current regulatory domain would not have the passive scan + * flag. + * + * Since AP mode uses monitor interfaces to inject/TX management + * frames we can make AP mode the exception to this rule once it + * supports radar detection as its implementation can deal with + * radar detection by itself. We can do that later by adding a + * monitor flag interfaces used for AP support. + */ + if ((chan->flags & (IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_PASSIVE_SCAN))) + goto fail_rcu; + + ieee80211_xmit(sdata, skb, chan->band); rcu_read_unlock(); return NETDEV_TX_OK; +fail_rcu: + rcu_read_unlock(); fail: dev_kfree_skb(skb); return NETDEV_TX_OK; /* meaning, we dealt with the skb */ @@ -1734,6 +1736,9 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, bool multicast; u32 info_flags = 0; u16 info_id = 0; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_sub_if_data *ap_sdata; + enum ieee80211_band band; if (unlikely(skb->len < ETH_HLEN)) goto fail; @@ -1743,9 +1748,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, ethertype = (skb->data[12] << 8) | skb->data[13]; fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA); + rcu_read_lock(); + switch (sdata->vif.type) { case NL80211_IFTYPE_AP_VLAN: - rcu_read_lock(); sta = rcu_dereference(sdata->u.vlan.sta); if (sta) { fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); @@ -1758,7 +1764,12 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); wme_sta = test_sta_flag(sta, WLAN_STA_WME); } - rcu_read_unlock(); + ap_sdata = container_of(sdata->bss, struct ieee80211_sub_if_data, + u.ap); + chanctx_conf = rcu_dereference(ap_sdata->vif.chanctx_conf); + if (!chanctx_conf) + goto fail_rcu; + band = chanctx_conf->channel->band; if (sta) break; /* fall through */ @@ -1769,6 +1780,11 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, memcpy(hdr.addr2, sdata->vif.addr, ETH_ALEN); memcpy(hdr.addr3, skb->data + ETH_ALEN, ETH_ALEN); hdrlen = 24; + if (sdata->vif.type == NL80211_IFTYPE_AP) + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (!chanctx_conf) + goto fail_rcu; + band = chanctx_conf->channel->band; break; case NL80211_IFTYPE_WDS: fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); @@ -1778,15 +1794,20 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, memcpy(hdr.addr3, skb->data, ETH_ALEN); memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN); hdrlen = 30; + /* + * 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; break; #ifdef CONFIG_MAC80211_MESH case NL80211_IFTYPE_MESH_POINT: if (!sdata->u.mesh.mshcfg.dot11MeshTTL) { /* Do not send frames with mesh_ttl == 0 */ sdata->u.mesh.mshstats.dropped_frames_ttl++; - goto fail; + goto fail_rcu; } - rcu_read_lock(); + if (!is_multicast_ether_addr(skb->data)) { mpath = mesh_path_lookup(skb->data, sdata); if (!mpath) @@ -1803,7 +1824,6 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, !(mppath && !ether_addr_equal(mppath->mpp, skb->data))) { hdrlen = ieee80211_fill_mesh_addresses(&hdr, &fc, skb->data, skb->data + ETH_ALEN); - rcu_read_unlock(); meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr, sdata, NULL, NULL); } else { @@ -1819,7 +1839,6 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, mesh_da = mppath->mpp; else if (mpath) mesh_da = mpath->dst; - rcu_read_unlock(); hdrlen = ieee80211_fill_mesh_addresses(&hdr, &fc, mesh_da, sdata->vif.addr); @@ -1839,13 +1858,16 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, skb->data + ETH_ALEN); } + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (!chanctx_conf) + goto fail_rcu; + band = chanctx_conf->channel->band; break; #endif case NL80211_IFTYPE_STATION: if (sdata->wdev.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) { bool tdls_peer = false; - rcu_read_lock(); sta = sta_info_get(sdata, skb->data); if (sta) { authorized = test_sta_flag(sta, @@ -1856,7 +1878,6 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, tdls_auth = test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); } - rcu_read_unlock(); /* * If the TDLS link is enabled, send everything @@ -1871,7 +1892,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, if (tdls_direct) { /* link during setup - throw out frames to peer */ if (!tdls_auth) - goto fail; + goto fail_rcu; /* DA SA BSSID */ memcpy(hdr.addr1, skb->data, ETH_ALEN); @@ -1896,6 +1917,10 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, memcpy(hdr.addr3, skb->data, ETH_ALEN); hdrlen = 24; } + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (!chanctx_conf) + goto fail_rcu; + band = chanctx_conf->channel->band; break; case NL80211_IFTYPE_ADHOC: /* DA SA BSSID */ @@ -1903,9 +1928,13 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN); memcpy(hdr.addr3, sdata->u.ibss.bssid, ETH_ALEN); hdrlen = 24; + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (!chanctx_conf) + goto fail_rcu; + band = chanctx_conf->channel->band; break; default: - goto fail; + goto fail_rcu; } /* @@ -1915,13 +1944,11 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, */ multicast = is_multicast_ether_addr(hdr.addr1); if (!multicast) { - rcu_read_lock(); sta = sta_info_get(sdata, hdr.addr1); if (sta) { authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); wme_sta = test_sta_flag(sta, WLAN_STA_WME); } - rcu_read_unlock(); } /* For mesh, the use of the QoS header is mandatory */ @@ -1949,7 +1976,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, I802_DEBUG_INC(local->tx_handlers_drop_unauth_port); - goto fail; + goto fail_rcu; } if (unlikely(!multicast && skb->sk && @@ -2004,7 +2031,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, kfree_skb(tmp_skb); if (!skb) - goto fail; + goto fail_rcu; } hdr.frame_control = fc; @@ -2052,7 +2079,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, head_need = max_t(int, 0, head_need); if (ieee80211_skb_resize(sdata, skb, head_need, true)) { ieee80211_free_txskb(&local->hw, skb); - return NETDEV_TX_OK; + goto fail_rcu; } } @@ -2104,10 +2131,13 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, info->flags = info_flags; info->ack_frame_id = info_id; - ieee80211_xmit(sdata, skb); + ieee80211_xmit(sdata, skb, band); + rcu_read_unlock(); return NETDEV_TX_OK; + fail_rcu: + rcu_read_unlock(); fail: dev_kfree_skb(skb); return NETDEV_TX_OK; @@ -2139,11 +2169,18 @@ static bool ieee80211_tx_pending_skb(struct ieee80211_local *local, struct sta_info *sta; struct ieee80211_hdr *hdr; bool result; + struct ieee80211_chanctx_conf *chanctx_conf; sdata = vif_to_sdata(info->control.vif); if (info->flags & IEEE80211_TX_INTFL_NEED_TXPROCESSING) { - result = ieee80211_tx(sdata, skb, true); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (unlikely(!chanctx_conf)) { + dev_kfree_skb(skb); + return true; + } + result = ieee80211_tx(sdata, skb, true, + chanctx_conf->channel->band); } else { struct sk_buff_head skbs; @@ -2285,14 +2322,16 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, struct ieee80211_sub_if_data *sdata = NULL; struct ieee80211_if_ap *ap = NULL; struct beacon_data *beacon; - enum ieee80211_band band = local->oper_channel->band; + enum ieee80211_band band; struct ieee80211_tx_rate_control txrc; + struct ieee80211_chanctx_conf *chanctx_conf; rcu_read_lock(); sdata = vif_to_sdata(vif); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); - if (!ieee80211_sdata_running(sdata)) + if (!ieee80211_sdata_running(sdata) || !chanctx_conf) goto out; if (tim_offset) @@ -2409,6 +2448,8 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, *pos++ = WLAN_EID_SSID; *pos++ = 0x0; + band = chanctx_conf->channel->band; + if (ieee80211_add_srates_ie(sdata, skb, true, band) || mesh_add_ds_params_ie(skb, sdata) || ieee80211_add_ext_srates_ie(sdata, skb, true, band) || @@ -2426,6 +2467,8 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, goto out; } + band = chanctx_conf->channel->band; + info = IEEE80211_SKB_CB(skb); info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; @@ -2656,14 +2699,17 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_if_ap *bss = NULL; struct beacon_data *beacon; struct ieee80211_tx_info *info; + struct ieee80211_chanctx_conf *chanctx_conf; sdata = vif_to_sdata(vif); bss = &sdata->u.ap; rcu_read_lock(); beacon = rcu_dereference(bss->beacon); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); - if (sdata->vif.type != NL80211_IFTYPE_AP || !beacon || !beacon->head) + if (sdata->vif.type != NL80211_IFTYPE_AP || !beacon || !beacon->head || + !chanctx_conf) goto out; if (bss->dtim_count != 0 || !bss->dtim_bc_mc) @@ -2693,7 +2739,7 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, info = IEEE80211_SKB_CB(skb); tx.flags |= IEEE80211_TX_PS_BUFFERED; - info->band = local->oper_channel->band; + info->band = chanctx_conf->channel->band; if (invoke_tx_handlers(&tx)) skb = NULL; @@ -2704,8 +2750,9 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, } EXPORT_SYMBOL(ieee80211_get_buffered_bc); -void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb, int tid) +void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, int tid, + enum ieee80211_band band) { int ac = ieee802_1d_to_ac[tid & 7]; @@ -2722,6 +2769,6 @@ void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, * requirements are that we do not come into tx with bhs on. */ local_bh_disable(); - ieee80211_xmit(sdata, skb); + ieee80211_xmit(sdata, skb, band); local_bh_enable(); } diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 22ca350..7d73707 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -832,6 +832,7 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, { struct ieee80211_local *local = sdata->local; struct ieee80211_tx_queue_params qparam; + struct ieee80211_chanctx_conf *chanctx_conf; int ac; bool use_11b, enable_qos; int aCWmin, aCWmax; @@ -844,8 +845,12 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, memset(&qparam, 0, sizeof(qparam)); - use_11b = (local->oper_channel->band == IEEE80211_BAND_2GHZ) && + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + use_11b = (chanctx_conf && + chanctx_conf->channel->band == IEEE80211_BAND_2GHZ) && !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE); + rcu_read_unlock(); /* * By default disable QoS in STA mode for old access points, which do @@ -924,7 +929,7 @@ void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, const size_t supp_rates_len, const u8 *supp_rates) { - struct ieee80211_local *local = sdata->local; + struct ieee80211_chanctx_conf *chanctx_conf; int i, have_higher_than_11mbit = 0; /* cf. IEEE 802.11 9.2.12 */ @@ -932,11 +937,16 @@ void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, if ((supp_rates[i] & 0x7f) * 5 > 110) have_higher_than_11mbit = 1; - if (local->oper_channel->band == IEEE80211_BAND_2GHZ && + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + + if (chanctx_conf && + chanctx_conf->channel->band == IEEE80211_BAND_2GHZ && have_higher_than_11mbit) sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; else sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; + rcu_read_unlock(); ieee80211_set_wmm_default(sdata, true); } @@ -1206,7 +1216,7 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, const u8 *ssid, size_t ssid_len, const u8 *ie, size_t ie_len, u32 ratemask, bool directed, bool no_cck, - struct ieee80211_channel *channel) + struct ieee80211_channel *channel, bool scan) { struct sk_buff *skb; @@ -1217,7 +1227,10 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, if (no_cck) IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_NO_CCK_RATE; - ieee80211_tx_skb(sdata, skb); + if (scan) + ieee80211_tx_skb_tid_band(sdata, skb, 7, channel->band); + else + ieee80211_tx_skb(sdata, skb); } } @@ -1280,6 +1293,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) { struct ieee80211_hw *hw = &local->hw; struct ieee80211_sub_if_data *sdata; + struct ieee80211_chanctx *ctx; struct sta_info *sta; int res, i; @@ -1352,6 +1366,12 @@ int ieee80211_reconfig(struct ieee80211_local *local) res = drv_add_interface(local, sdata); } + /* add channel contexts */ + mutex_lock(&local->chanctx_mtx); + list_for_each_entry(ctx, &local->chanctx_list, list) + WARN_ON(drv_add_chanctx(local, ctx)); + mutex_unlock(&local->chanctx_mtx); + /* add STAs back */ mutex_lock(&local->sta_mtx); list_for_each_entry(sta, &local->sta_list, list) { @@ -1392,11 +1412,22 @@ int ieee80211_reconfig(struct ieee80211_local *local) /* Finally also reconfigure all the BSS information */ list_for_each_entry(sdata, &local->interfaces, list) { + struct ieee80211_chanctx_conf *ctx_conf; u32 changed; if (!ieee80211_sdata_running(sdata)) continue; + mutex_lock(&local->chanctx_mtx); + ctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, + lockdep_is_held(&local->chanctx_mtx)); + if (ctx_conf) { + ctx = container_of(ctx_conf, struct ieee80211_chanctx, + conf); + drv_assign_vif_chanctx(local, sdata, ctx); + } + mutex_unlock(&local->chanctx_mtx); + /* common change flags for all interface types */ changed = BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE | |