mac80211: define TDLS wider BW support bits
Allow a device to specify support for the TDLS wider-bandwidth feature.
Indicate this support during TDLS setup in the ext-capab IE and set an
appropriate station flag when our TDLS peer supports it.
This feature gives TDLS peers the ability to use a wider channel than
the base width of the BSS. For instance VHT capable TDLS peers connected
on a 20MHz channel can extend the channel to 80MHz, if regulatory
considerations allow it.
Do not cap the bandwidth of such stations by the current BSS channel width
in mac80211.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/vht.c b/net/mac80211/vht.c
index 80694d5..f05808d 100644
--- a/net/mac80211/vht.c
+++ b/net/mac80211/vht.c
@@ -308,11 +308,15 @@
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
enum ieee80211_sta_rx_bandwidth bw;
+ enum nl80211_chan_width bss_width = sdata->vif.bss_conf.chandef.width;
- bw = ieee80211_chan_width_to_rx_bw(sdata->vif.bss_conf.chandef.width);
- bw = min(bw, ieee80211_sta_cap_rx_bw(sta));
+ bw = ieee80211_sta_cap_rx_bw(sta);
bw = min(bw, sta->cur_max_bandwidth);
+ /* do not cap the BW of TDLS WIDER_BW peers by the bss */
+ if (!test_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW))
+ bw = min(bw, ieee80211_chan_width_to_rx_bw(bss_width));
+
return bw;
}