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mac80211: handle width changes from opmode notification IE in beacon 

An AP can send an operating channel width change in a beacon
opmode notification IE as long as there's a change in the nss as
well (See 802.11ac-2013 section 10.41).
So don't limit updating to nss only from an opmode notification IE.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Eyal Shapira 2015-12-08 16:04:36 +02:00 committed by Johannes Berg
parent a87da0cbc4
commit cf1e05c636
5 changed files with 8 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/mac80211/cfg.c
View File

@ -1169,8 +1169,7 @@ static int sta_apply_parameters(struct ieee80211_local *local,
* rc isn't initialized here yet, so ignore it
*/
__ieee80211_vht_handle_opmode(sdata, sta,
params->opmode_notif,
band, false);
params->opmode_notif, band);
}
if (ieee80211_vif_is_mesh(&sdata->vif))

4
net/mac80211/ieee80211_i.h
View File

@ -1709,10 +1709,10 @@ enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
void ieee80211_sta_set_rx_nss(struct sta_info *sta);
u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, u8 opmode,
enum ieee80211_band band, bool nss_only);
enum ieee80211_band band);
void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, u8 opmode,
enum ieee80211_band band, bool nss_only);
enum ieee80211_band band);
void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta_vht_cap *vht_cap);
void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,

2
net/mac80211/mlme.c
View File

@ -3580,7 +3580,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
if (sta && elems.opmode_notif)
ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
rx_status->band, true);
rx_status->band);
mutex_unlock(&local->sta_mtx);
changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,

3
net/mac80211/rx.c
View File

@ -2736,8 +2736,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
opmode = mgmt->u.action.u.vht_opmode_notif.operating_mode;
ieee80211_vht_handle_opmode(rx->sdata, rx->sta,
opmode, status->band,
false);
opmode, status->band);
goto handled;
}
default:

10
net/mac80211/vht.c
View File

@ -378,7 +378,7 @@ void ieee80211_sta_set_rx_nss(struct sta_info *sta)
u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, u8 opmode,
enum ieee80211_band band, bool nss_only)
enum ieee80211_band band)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
@ -401,9 +401,6 @@ u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
changed |= IEEE80211_RC_NSS_CHANGED;
}
if (nss_only)
return changed;
switch (opmode & IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK) {
case IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ:
sta->cur_max_bandwidth = IEEE80211_STA_RX_BW_20;
@ -430,13 +427,12 @@ u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta, u8 opmode,
enum ieee80211_band band, bool nss_only)
enum ieee80211_band band)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band];
u32 changed = __ieee80211_vht_handle_opmode(sdata, sta, opmode,
band, nss_only);
u32 changed = __ieee80211_vht_handle_opmode(sdata, sta, opmode, band);
if (changed > 0)
rate_control_rate_update(local, sband, sta, changed);