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authorJanusz.Dziedzic@tieto.com <Janusz.Dziedzic@tieto.com>2015-03-20 06:37:01 +0100
committerJohannes Berg <johannes.berg@intel.com>2015-03-30 10:48:26 +0200
commitabcff6ef01f9ffa6958e50457574132f8f786308 (patch)
tree54c40e220974486318c8b5c4e3c1d0d45a4333ba /net/mac80211/ibss.c
parent76bed0f43b27d37cbe5fe9f3c27362db59451dea (diff)
downloadlinux-abcff6ef01f9ffa6958e50457574132f8f786308.tar.bz2
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>
Diffstat (limited to 'net/mac80211/ibss.c')
-rw-r--r--net/mac80211/ibss.c49
1 files changed, 40 insertions, 9 deletions
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) {