--- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1122,6 +1122,7 @@ struct cfg80211_ibss_params { u8 *ssid; u8 *bssid; struct ieee80211_channel *channel; + enum nl80211_channel_type channel_type; u8 *ie; u8 ssid_len, ie_len; u16 beacon_interval; @@ -3188,6 +3189,16 @@ void cfg80211_gtk_rekey_notify(struct ne void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, const u8 *bssid, bool preauth, gfp_t gfp); +/** + * cfg80211_can_use_ext_chan - test if ht40 on extension channel can be used + * @wiphy: the wiphy + * @chan: main channel + * @channel_type: HT mode + */ +bool cfg80211_can_beacon_sec_chan(struct wiphy *wiphy, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type); + /* Logging, debugging and troubleshooting/diagnostic helpers. */ /* wiphy_printk helpers, similar to dev_printk */ --- a/net/mac80211/agg-rx.c +++ b/net/mac80211/agg-rx.c @@ -180,6 +180,10 @@ static void ieee80211_send_addba_resp(st memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); else if (sdata->vif.type == NL80211_IFTYPE_STATION) memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); + else if (sdata->vif.type == NL80211_IFTYPE_WDS) + memcpy(mgmt->bssid, da, ETH_ALEN); + else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c @@ -77,10 +77,13 @@ static void ieee80211_send_addba_request memcpy(mgmt->da, da, ETH_ALEN); memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); if (sdata->vif.type == NL80211_IFTYPE_AP || - sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + sdata->vif.type == NL80211_IFTYPE_AP_VLAN || + sdata->vif.type == NL80211_IFTYPE_WDS) memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); else if (sdata->vif.type == NL80211_IFTYPE_STATION) memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); + else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); @@ -397,7 +400,9 @@ int ieee80211_start_tx_ba_session(struct */ if (sdata->vif.type != NL80211_IFTYPE_STATION && sdata->vif.type != NL80211_IFTYPE_AP_VLAN && - sdata->vif.type != NL80211_IFTYPE_AP) + sdata->vif.type != NL80211_IFTYPE_AP && + sdata->vif.type != NL80211_IFTYPE_ADHOC && + sdata->vif.type != NL80211_IFTYPE_WDS) return -EINVAL; if (test_sta_flag(sta, WLAN_STA_BLOCK_BA)) { --- a/net/mac80211/debugfs_sta.c +++ b/net/mac80211/debugfs_sta.c @@ -63,11 +63,11 @@ static ssize_t sta_flags_read(struct fil test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : "" int res = scnprintf(buf, sizeof(buf), - "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", + "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", TEST(AUTH), TEST(ASSOC), TEST(PS_STA), TEST(PS_DRIVER), TEST(AUTHORIZED), TEST(SHORT_PREAMBLE), TEST(ASSOC_AP), - TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT), + TEST(WME), TEST(CLEAR_PS_FILT), TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL), TEST(UAPSD), TEST(SP), TEST(TDLS_PEER), TEST(TDLS_PEER_AUTH)); --- a/net/mac80211/ht.c +++ b/net/mac80211/ht.c @@ -199,6 +199,8 @@ void ieee80211_send_delba(struct ieee802 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); else if (sdata->vif.type == NL80211_IFTYPE_STATION) memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); + else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -77,6 +77,7 @@ static void __ieee80211_sta_join_ibss(st struct cfg80211_bss *bss; u32 bss_change; u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; + enum nl80211_channel_type channel_type; lockdep_assert_held(&ifibss->mtx); @@ -104,8 +105,16 @@ static void __ieee80211_sta_join_ibss(st sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0; - local->oper_channel = chan; - WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT)); + channel_type = ifibss->channel_type; + if (channel_type > NL80211_CHAN_HT20 && + !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_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); sband = local->hw.wiphy->bands[chan->band]; @@ -171,6 +180,18 @@ static void __ieee80211_sta_join_ibss(st memcpy(skb_put(skb, ifibss->ie_len), ifibss->ie, ifibss->ie_len); + /* add HT capability and information IEs */ + if (channel_type && sband->ht_cap.ht_supported) { + pos = skb_put(skb, 4 + + sizeof(struct ieee80211_ht_cap) + + sizeof(struct ieee80211_ht_info)); + pos = ieee80211_ie_build_ht_cap(pos, sband, sband->ht_cap.cap); + pos = ieee80211_ie_build_ht_info(pos, + &sband->ht_cap, + chan, + channel_type); + } + if (local->hw.queues >= 4) { pos = skb_put(skb, 9); *pos++ = WLAN_EID_VENDOR_SPECIFIC; @@ -194,6 +215,7 @@ static void __ieee80211_sta_join_ibss(st bss_change |= BSS_CHANGED_BEACON; bss_change |= BSS_CHANGED_BEACON_ENABLED; bss_change |= BSS_CHANGED_BASIC_RATES; + bss_change |= BSS_CHANGED_HT; bss_change |= BSS_CHANGED_IBSS; sdata->vif.bss_conf.ibss_joined = true; ieee80211_bss_info_change_notify(sdata, bss_change); @@ -266,6 +288,7 @@ static void ieee80211_rx_bss_info(struct u64 beacon_timestamp, rx_timestamp; u32 supp_rates = 0; enum ieee80211_band band = rx_status->band; + struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; if (elems->ds_params && elems->ds_params_len == 1) freq = ieee80211_channel_to_frequency(elems->ds_params[0], @@ -275,7 +298,10 @@ static void ieee80211_rx_bss_info(struct channel = ieee80211_get_channel(local->hw.wiphy, freq); - if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) + if (!channel || + channel->flags & (IEEE80211_CHAN_DISABLED || + IEEE80211_CHAN_NO_IBSS || + IEEE80211_CHAN_RADAR)) return; if (sdata->vif.type == NL80211_IFTYPE_ADHOC && @@ -313,8 +339,41 @@ static void ieee80211_rx_bss_info(struct GFP_ATOMIC); } - if (sta && elems->wmm_info) - set_sta_flag(sta, WLAN_STA_WME); + if (sta) { + if (elems->wmm_info) + set_sta_flag(sta, WLAN_STA_WME); + + /* we both use HT */ + if (elems->ht_info_elem && elems->ht_cap_elem && + sdata->u.ibss.channel_type) { + enum nl80211_channel_type channel_type = + ieee80211_ht_info_to_channel_type( + elems->ht_info_elem); + struct ieee80211_sta_ht_cap sta_ht_cap_new; + + /* + * fall back to HT20 if we don't use or use + * the other extension channel + */ + if (channel_type > NL80211_CHAN_HT20 && + channel_type != sdata->u.ibss.channel_type) + channel_type = NL80211_CHAN_HT20; + + ieee80211_ht_cap_ie_to_sta_ht_cap(sband, + elems->ht_cap_elem, + &sta_ht_cap_new); + if (memcmp(&sta->sta.ht_cap, &sta_ht_cap_new, + sizeof(sta_ht_cap_new))) { + memcpy(&sta->sta.ht_cap, + &sta_ht_cap_new, + sizeof(sta_ht_cap_new)); + rate_control_rate_update(local, sband, + sta, + IEEE80211_RC_HT_CHANGED, + channel_type); + } + } + } rcu_read_unlock(); } @@ -896,10 +955,15 @@ int ieee80211_ibss_join(struct ieee80211 struct sk_buff *skb; skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom + - 36 /* bitrates */ + - 34 /* SSID */ + - 3 /* DS params */ + - 4 /* IBSS params */ + + sizeof(struct ieee80211_hdr_3addr) + + 12 /* struct ieee80211_mgmt.u.beacon */ + + 2 + IEEE80211_MAX_SSID_LEN /* max SSID */ + + 2 + 8 /* max Supported Rates */ + + 3 /* max DS params */ + + 4 /* IBSS params */ + + 2 + (IEEE80211_MAX_SUPP_RATES - 8) + + 2 + sizeof(struct ieee80211_ht_cap) + + 2 + sizeof(struct ieee80211_ht_info) + params->ie_len); if (!skb) return -ENOMEM; @@ -920,13 +984,15 @@ int ieee80211_ibss_join(struct ieee80211 sdata->vif.bss_conf.beacon_int = params->beacon_interval; sdata->u.ibss.channel = params->channel; + 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; - WARN_ON(!ieee80211_set_channel_type(sdata->local, sdata, - NL80211_CHAN_NO_HT)); + if (!ieee80211_set_channel_type(sdata->local, sdata, + params->channel_type)) + return -EINVAL; } if (params->ie) { --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -465,6 +465,7 @@ struct ieee80211_if_ibss { u8 ssid_len, ie_len; u8 *ie; struct ieee80211_channel *channel; + enum nl80211_channel_type channel_type; unsigned long ibss_join_req; /* probe response/beacon for IBSS */ @@ -1339,6 +1340,12 @@ void ieee80211_recalc_smps(struct ieee80 size_t ieee80211_ie_split(const u8 *ies, size_t ielen, const u8 *ids, int n_ids, size_t offset); size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); +u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_supported_band *sband, + u16 cap); +u8 *ieee80211_ie_build_ht_info(u8 *pos, + struct ieee80211_sta_ht_cap *ht_cap, + struct ieee80211_channel *channel, + enum nl80211_channel_type channel_type); /* internal work items */ void ieee80211_work_init(struct ieee80211_local *local); @@ -1367,6 +1374,8 @@ ieee80211_get_channel_mode(struct ieee80 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_info_to_channel_type(struct ieee80211_ht_info *ht_info); #ifdef CONFIG_MAC80211_NOINLINE #define debug_noinline noinline --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -178,7 +178,6 @@ static int ieee80211_do_open(struct net_ { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; - struct sta_info *sta; u32 changed = 0; int res; u32 hw_reconf_flags = 0; @@ -290,27 +289,6 @@ static int ieee80211_do_open(struct net_ set_bit(SDATA_STATE_RUNNING, &sdata->state); - if (sdata->vif.type == NL80211_IFTYPE_WDS) { - /* Create STA entry for the WDS peer */ - sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, - GFP_KERNEL); - if (!sta) { - res = -ENOMEM; - goto err_del_interface; - } - - /* no atomic bitop required since STA is not live yet */ - set_sta_flag(sta, WLAN_STA_AUTHORIZED); - - res = sta_info_insert(sta); - if (res) { - /* STA has been freed */ - goto err_del_interface; - } - - rate_control_rate_init(sta); - } - /* * set_multicast_list will be invoked by the networking core * which will check whether any increments here were done in @@ -344,8 +322,7 @@ static int ieee80211_do_open(struct net_ netif_tx_start_all_queues(dev); return 0; - err_del_interface: - drv_remove_interface(local, &sdata->vif); + err_stop: if (!local->open_count) drv_stop(local); @@ -716,6 +693,70 @@ static void ieee80211_if_setup(struct ne dev->destructor = free_netdev; } +static void ieee80211_wds_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_rx_status *rx_status; + struct ieee802_11_elems elems; + struct ieee80211_mgmt *mgmt; + struct sta_info *sta; + size_t baselen; + u32 rates = 0; + u16 stype; + bool new = false; + enum ieee80211_band band = local->hw.conf.channel->band; + struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; + + rx_status = IEEE80211_SKB_RXCB(skb); + mgmt = (struct ieee80211_mgmt *) skb->data; + stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE; + + if (stype != IEEE80211_STYPE_BEACON) + return; + + baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; + if (baselen > skb->len) + return; + + ieee802_11_parse_elems(mgmt->u.probe_resp.variable, + skb->len - baselen, &elems); + + rates = ieee80211_sta_get_rates(local, &elems, band); + + rcu_read_lock(); + + sta = sta_info_get(sdata, sdata->u.wds.remote_addr); + + if (!sta) { + rcu_read_unlock(); + sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, + GFP_KERNEL); + if (!sta) + return; + + new = true; + } + + sta->last_rx = jiffies; + sta->sta.supp_rates[local->hw.conf.channel->band] = rates; + + if (elems.ht_cap_elem) + ieee80211_ht_cap_ie_to_sta_ht_cap(sband, + elems.ht_cap_elem, &sta->sta.ht_cap); + + if (elems.wmm_param) + set_sta_flag(sta, WLAN_STA_WME); + + if (new) { + set_sta_flag(sta, WLAN_STA_AUTHORIZED); + rate_control_rate_init(sta); + sta_info_insert_rcu(sta); + } + + rcu_read_unlock(); +} + static void ieee80211_iface_work(struct work_struct *work) { struct ieee80211_sub_if_data *sdata = @@ -820,6 +861,9 @@ static void ieee80211_iface_work(struct break; ieee80211_mesh_rx_queued_mgmt(sdata, skb); break; + case NL80211_IFTYPE_WDS: + ieee80211_wds_rx_queued_mgmt(sdata, skb); + break; default: WARN(1, "frame for unexpected interface type"); break; --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2211,7 +2211,9 @@ ieee80211_rx_h_action(struct ieee80211_r */ if (sdata->vif.type != NL80211_IFTYPE_STATION && sdata->vif.type != NL80211_IFTYPE_AP_VLAN && - sdata->vif.type != NL80211_IFTYPE_AP) + sdata->vif.type != NL80211_IFTYPE_AP && + sdata->vif.type != NL80211_IFTYPE_ADHOC && + sdata->vif.type != NL80211_IFTYPE_WDS) break; /* verify action_code is present */ @@ -2426,13 +2428,14 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_ if (!ieee80211_vif_is_mesh(&sdata->vif) && sdata->vif.type != NL80211_IFTYPE_ADHOC && - sdata->vif.type != NL80211_IFTYPE_STATION) + sdata->vif.type != NL80211_IFTYPE_STATION && + sdata->vif.type != NL80211_IFTYPE_WDS) return RX_DROP_MONITOR; switch (stype) { case cpu_to_le16(IEEE80211_STYPE_BEACON): case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): - /* process for all: mesh, mlme, ibss */ + /* process for all: mesh, mlme, ibss, wds */ break; case cpu_to_le16(IEEE80211_STYPE_DEAUTH): case cpu_to_le16(IEEE80211_STYPE_DISASSOC): @@ -2775,10 +2778,16 @@ static int prepare_for_handlers(struct i } break; case NL80211_IFTYPE_WDS: - if (bssid || !ieee80211_is_data(hdr->frame_control)) - return 0; if (compare_ether_addr(sdata->u.wds.remote_addr, hdr->addr2)) return 0; + + if (ieee80211_is_data(hdr->frame_control) || + ieee80211_is_action(hdr->frame_control)) { + if (compare_ether_addr(sdata->vif.addr, hdr->addr1)) + return 0; + } else if (!ieee80211_is_beacon(hdr->frame_control)) + return 0; + break; default: /* should never get here */ --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -32,7 +32,6 @@ * frames. * @WLAN_STA_ASSOC_AP: We're associated to that station, it is an AP. * @WLAN_STA_WME: Station is a QoS-STA. - * @WLAN_STA_WDS: Station is one of our WDS peers. * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the * IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next * frame to this station is transmitted. @@ -61,7 +60,6 @@ enum ieee80211_sta_info_flags { WLAN_STA_SHORT_PREAMBLE, WLAN_STA_ASSOC_AP, WLAN_STA_WME, - WLAN_STA_WDS, WLAN_STA_CLEAR_PS_FILT, WLAN_STA_MFP, WLAN_STA_BLOCK_BA, --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -836,23 +836,8 @@ int ieee80211_build_preq_ies(struct ieee offset = noffset; } - if (sband->ht_cap.ht_supported) { - u16 cap = sband->ht_cap.cap; - __le16 tmp; - - *pos++ = WLAN_EID_HT_CAPABILITY; - *pos++ = sizeof(struct ieee80211_ht_cap); - memset(pos, 0, sizeof(struct ieee80211_ht_cap)); - tmp = cpu_to_le16(cap); - memcpy(pos, &tmp, sizeof(u16)); - pos += sizeof(u16); - *pos++ = sband->ht_cap.ampdu_factor | - (sband->ht_cap.ampdu_density << - IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); - memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); - pos += sizeof(sband->ht_cap.mcs); - pos += 2 + 4 + 1; /* ext info, BF cap, antsel */ - } + if (sband->ht_cap.ht_supported) + pos = ieee80211_ie_build_ht_cap(pos, sband, sband->ht_cap.cap); /* * If adding more here, adjust code in main.c @@ -1443,3 +1428,100 @@ int ieee80211_add_ext_srates_ie(struct i } return 0; } + +u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_supported_band *sband, + u16 cap) +{ + __le16 tmp; + + *pos++ = WLAN_EID_HT_CAPABILITY; + *pos++ = sizeof(struct ieee80211_ht_cap); + memset(pos, 0, sizeof(struct ieee80211_ht_cap)); + + /* capability flags */ + tmp = cpu_to_le16(cap); + memcpy(pos, &tmp, sizeof(u16)); + pos += sizeof(u16); + + /* AMPDU parameters */ + *pos++ = sband->ht_cap.ampdu_factor | + (sband->ht_cap.ampdu_density << + IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); + + /* MCS set */ + memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); + pos += sizeof(sband->ht_cap.mcs); + + /* extended capabilities */ + pos += sizeof(__le16); + + /* BF capabilities */ + pos += sizeof(__le32); + + /* antenna selection */ + pos += sizeof(u8); + + return pos; +} + +u8 *ieee80211_ie_build_ht_info(u8 *pos, + struct ieee80211_sta_ht_cap *ht_cap, + struct ieee80211_channel *channel, + enum nl80211_channel_type channel_type) +{ + struct ieee80211_ht_info *ht_info; + /* Build HT Information */ + *pos++ = WLAN_EID_HT_INFORMATION; + *pos++ = sizeof(struct ieee80211_ht_info); + ht_info = (struct ieee80211_ht_info *)pos; + ht_info->control_chan = + ieee80211_frequency_to_channel(channel->center_freq); + switch (channel_type) { + case NL80211_CHAN_HT40MINUS: + ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_BELOW; + break; + case NL80211_CHAN_HT40PLUS: + ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; + break; + case NL80211_CHAN_HT20: + default: + ht_info->ht_param = IEEE80211_HT_PARAM_CHA_SEC_NONE; + break; + } + if (ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) + ht_info->ht_param |= IEEE80211_HT_PARAM_CHAN_WIDTH_ANY; + ht_info->operation_mode = 0x0000; + ht_info->stbc_param = 0x0000; + + /* It seems that Basic MCS set and Supported MCS set + are identical for the first 10 bytes */ + memset(&ht_info->basic_set, 0, 16); + memcpy(&ht_info->basic_set, &ht_cap->mcs, 10); + + return pos + sizeof(struct ieee80211_ht_info); +} + +enum nl80211_channel_type +ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info) +{ + enum nl80211_channel_type channel_type; + + if (!ht_info) + return NL80211_CHAN_NO_HT; + + switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { + case IEEE80211_HT_PARAM_CHA_SEC_NONE: + channel_type = NL80211_CHAN_HT20; + break; + case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: + channel_type = NL80211_CHAN_HT40PLUS; + break; + case IEEE80211_HT_PARAM_CHA_SEC_BELOW: + channel_type = NL80211_CHAN_HT40MINUS; + break; + default: + channel_type = NL80211_CHAN_NO_HT; + } + + return channel_type; +} --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -118,7 +118,6 @@ static void ieee80211_add_ht_ie(struct s u8 *pos; u32 flags = channel->flags; u16 cap = sband->ht_cap.cap; - __le16 tmp; if (!sband->ht_cap.ht_supported) return; @@ -169,34 +168,8 @@ static void ieee80211_add_ht_ie(struct s } /* reserve and fill IE */ - pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); - *pos++ = WLAN_EID_HT_CAPABILITY; - *pos++ = sizeof(struct ieee80211_ht_cap); - memset(pos, 0, sizeof(struct ieee80211_ht_cap)); - - /* capability flags */ - tmp = cpu_to_le16(cap); - memcpy(pos, &tmp, sizeof(u16)); - pos += sizeof(u16); - - /* AMPDU parameters */ - *pos++ = sband->ht_cap.ampdu_factor | - (sband->ht_cap.ampdu_density << - IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); - - /* MCS set */ - memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); - pos += sizeof(sband->ht_cap.mcs); - - /* extended capabilities */ - pos += sizeof(__le16); - - /* BF capabilities */ - pos += sizeof(__le32); - - /* antenna selection */ - pos += sizeof(u8); + ieee80211_ie_build_ht_cap(pos, sband, cap); } static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, --- a/net/wireless/chan.c +++ b/net/wireless/chan.c @@ -44,9 +44,9 @@ rdev_freq_to_chan(struct cfg80211_regist return chan; } -static bool can_beacon_sec_chan(struct wiphy *wiphy, - struct ieee80211_channel *chan, - enum nl80211_channel_type channel_type) +bool cfg80211_can_beacon_sec_chan(struct wiphy *wiphy, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type) { struct ieee80211_channel *sec_chan; int diff; @@ -75,6 +75,7 @@ static bool can_beacon_sec_chan(struct w return true; } +EXPORT_SYMBOL(cfg80211_can_beacon_sec_chan); int cfg80211_set_freq(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, int freq, @@ -109,8 +110,8 @@ int cfg80211_set_freq(struct cfg80211_re switch (channel_type) { case NL80211_CHAN_HT40PLUS: case NL80211_CHAN_HT40MINUS: - if (!can_beacon_sec_chan(&rdev->wiphy, chan, - channel_type)) { + if (!cfg80211_can_beacon_sec_chan(&rdev->wiphy, chan, + channel_type)) { printk(KERN_DEBUG "cfg80211: Secondary channel not " "allowed to initiate communication\n"); --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -4574,13 +4574,34 @@ static int nl80211_join_ibss(struct sk_b ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); } - ibss.channel = ieee80211_get_channel(wiphy, - nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); + if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { + enum nl80211_channel_type channel_type; + + channel_type = nla_get_u32( + info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); + if (channel_type > NL80211_CHAN_HT40PLUS) + return -EINVAL; + ibss.channel_type = channel_type; + } else { + ibss.channel_type = NL80211_CHAN_NO_HT; + } + + ibss.channel = rdev_freq_to_chan(rdev, + nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]), + ibss.channel_type); if (!ibss.channel || + ibss.channel->flags & IEEE80211_CHAN_RADAR || ibss.channel->flags & IEEE80211_CHAN_NO_IBSS || ibss.channel->flags & IEEE80211_CHAN_DISABLED) return -EINVAL; + /* Both channels should be able to initiate communication */ + if ((ibss.channel_type == NL80211_CHAN_HT40PLUS || + ibss.channel_type == NL80211_CHAN_HT40MINUS) && + !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel, + ibss.channel_type)) + return -EINVAL; + ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];