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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 <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Janusz.Dziedzic@tieto.com 2015-03-20 06:37:01 +01:00 committed by Johannes Berg
parent 76bed0f43b
commit abcff6ef01
5 changed files with 80 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/mac80211/ht.c
View File

@ -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 =

49
net/mac80211/ibss.c
View File

@ -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) {

3
net/mac80211/ieee80211_i.h
View File

@ -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

4
net/mac80211/mesh_plink.c
View File

@ -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 &

33
net/mac80211/util.c
View File

@ -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)