From abcff6ef01f9ffa6958e50457574132f8f786308 Mon Sep 17 00:00:00 2001 From: "Janusz.Dziedzic@tieto.com" Date: Fri, 20 Mar 2015 06:37:01 +0100 Subject: [PATCH] mac80211: add VHT support for IBSS Add VHT support for IBSS. Drivers could activate this feature by setting NL80211_EXT_FEATURE_VHT_IBSS flag. Signed-off-by: Janusz Dziedzic Signed-off-by: Johannes Berg --- net/mac80211/ht.c | 2 -- net/mac80211/ibss.c | 49 +++++++++++++++++++++++++++++++------- net/mac80211/ieee80211_i.h | 3 +++ net/mac80211/mesh_plink.c | 4 ++++ net/mac80211/util.c | 33 +++++++++++++++++++++++++ 5 files changed, 80 insertions(+), 11 deletions(-) diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c index ff630be2ca75..7a76ce639d58 100644 --- a/net/mac80211/ht.c +++ b/net/mac80211/ht.c @@ -252,8 +252,6 @@ bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, break; } - if (bw != sta->sta.bandwidth) - changed = true; sta->sta.bandwidth = bw; sta->cur_max_bandwidth = diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 8f8391e008ed..52d629d5e797 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -188,6 +188,16 @@ ieee80211_ibss_build_presp(struct ieee80211_sub_if_data *sdata, */ pos = ieee80211_ie_build_ht_oper(pos, &sband->ht_cap, chandef, 0); + + /* add VHT capability and information IEs */ + if (chandef->width != NL80211_CHAN_WIDTH_20 && + chandef->width != NL80211_CHAN_WIDTH_40 && + sband->vht_cap.vht_supported) { + pos = ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, + sband->vht_cap.cap); + pos = ieee80211_ie_build_vht_oper(pos, &sband->vht_cap, + chandef); + } } if (local->hw.queues >= IEEE80211_NUM_ACS) @@ -415,6 +425,11 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, NL80211_CHAN_WIDTH_20_NOHT); chandef.width = sdata->u.ibss.chandef.width; break; + case NL80211_CHAN_WIDTH_80: + case NL80211_CHAN_WIDTH_160: + chandef = sdata->u.ibss.chandef; + chandef.chan = cbss->channel; + break; default: /* fall back to 20 MHz for unsupported modes */ cfg80211_chandef_create(&chandef, cbss->channel, @@ -1026,24 +1041,40 @@ static void ieee80211_update_sta_info(struct ieee80211_sub_if_data *sdata, /* we both use HT */ struct ieee80211_ht_cap htcap_ie; struct cfg80211_chan_def chandef; + enum ieee80211_sta_rx_bandwidth bw = sta->sta.bandwidth; ieee80211_ht_oper_to_chandef(channel, elems->ht_operation, &chandef); memcpy(&htcap_ie, elems->ht_cap_elem, sizeof(htcap_ie)); - - /* - * fall back to HT20 if we don't use or use - * the other extension channel - */ - if (chandef.center_freq1 != sdata->u.ibss.chandef.center_freq1) - htcap_ie.cap_info &= - cpu_to_le16(~IEEE80211_HT_CAP_SUP_WIDTH_20_40); - rates_updated |= ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, &htcap_ie, sta); + + if (elems->vht_operation && elems->vht_cap_elem && + sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20 && + sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_40) { + /* we both use VHT */ + struct ieee80211_vht_cap cap_ie; + struct ieee80211_sta_vht_cap cap = sta->sta.vht_cap; + + ieee80211_vht_oper_to_chandef(channel, + elems->vht_operation, + &chandef); + memcpy(&cap_ie, elems->vht_cap_elem, sizeof(cap_ie)); + ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, + &cap_ie, sta); + if (memcmp(&cap, &sta->sta.vht_cap, sizeof(cap))) + rates_updated |= true; + } + + if (bw != sta->sta.bandwidth) + rates_updated |= true; + + if (!cfg80211_chandef_compatible(&sdata->u.ibss.chandef, + &chandef)) + WARN_ON_ONCE(1); } if (sta && rates_updated) { diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 3331c62b4433..81340abb3876 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1960,6 +1960,9 @@ u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, const struct ieee80211_ht_operation *ht_oper, struct cfg80211_chan_def *chandef); +void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, + const struct ieee80211_vht_operation *oper, + struct cfg80211_chan_def *chandef); u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); int __must_check diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index 8465c055a371..60d737f144e3 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -382,6 +382,7 @@ static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata, enum ieee80211_band band = ieee80211_get_sdata_band(sdata); struct ieee80211_supported_band *sband; u32 rates, basic_rates = 0, changed = 0; + enum ieee80211_sta_rx_bandwidth bw = sta->sta.bandwidth; sband = local->hw.wiphy->bands[band]; rates = ieee80211_sta_get_rates(sdata, elems, band, &basic_rates); @@ -401,6 +402,9 @@ static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata, elems->ht_cap_elem, sta)) changed |= IEEE80211_RC_BW_CHANGED; + if (bw != sta->sta.bandwidth) + changed |= IEEE80211_RC_BW_CHANGED; + /* HT peer is operating 20MHz-only */ if (elems->ht_operation && !(elems->ht_operation->ht_param & diff --git a/net/mac80211/util.c b/net/mac80211/util.c index e664b28821a2..256647cb1d24 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2440,6 +2440,39 @@ void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan, cfg80211_chandef_create(chandef, control_chan, channel_type); } +void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan, + const struct ieee80211_vht_operation *oper, + struct cfg80211_chan_def *chandef) +{ + if (!oper) + return; + + chandef->chan = control_chan; + + switch (oper->chan_width) { + case IEEE80211_VHT_CHANWIDTH_USE_HT: + break; + case IEEE80211_VHT_CHANWIDTH_80MHZ: + chandef->width = NL80211_CHAN_WIDTH_80; + break; + case IEEE80211_VHT_CHANWIDTH_160MHZ: + chandef->width = NL80211_CHAN_WIDTH_160; + break; + case IEEE80211_VHT_CHANWIDTH_80P80MHZ: + chandef->width = NL80211_CHAN_WIDTH_80P80; + break; + default: + break; + } + + chandef->center_freq1 = + ieee80211_channel_to_frequency(oper->center_freq_seg1_idx, + control_chan->band); + chandef->center_freq2 = + ieee80211_channel_to_frequency(oper->center_freq_seg2_idx, + control_chan->band); +} + int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, const struct ieee80211_supported_band *sband, const u8 *srates, int srates_len, u32 *rates)