xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mac80211: track needed RX chains for channel contexts

Browse Source 
On each channel that the device is operating on, it
may need to listen using one or more chains depending
on the SMPS settings of the interfaces using it. The
previous channel context changes completely removed
this ability (before, it was available as the SMPS
mode).

Add per-context tracking of the required static and
dynamic RX chains and notify the driver on changes.
To achieve this, track the chains and SMPS mode used
on each virtual interface and update the channel
context whenever this changes.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2012-09-11 14:34:12 +02:00
parent 55de908ab2
commit 04ecd2578e
12 changed files with 219 additions and 92 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
net/mac80211/status.c
View File

@@ -189,30 +189,31 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
}
if (ieee80211_is_action(mgmt->frame_control) &&
sdata->vif.type == NL80211_IFTYPE_STATION &&
mgmt->u.action.category == WLAN_CATEGORY_HT &&
mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS) {
mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS &&
sdata->vif.type == NL80211_IFTYPE_STATION &&
ieee80211_sdata_running(sdata)) {
/*
* This update looks racy, but isn't -- if we come
* here we've definitely got a station that we're
* talking to, and on a managed interface that can
* only be the AP. And the only other place updating
* this variable is before we're associated.
* this variable in managed mode is before association.
*/
switch (mgmt->u.action.u.ht_smps.smps_control) {
case WLAN_HT_SMPS_CONTROL_DYNAMIC:
sta->sdata->u.mgd.ap_smps = IEEE80211_SMPS_DYNAMIC;
sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
break;
case WLAN_HT_SMPS_CONTROL_STATIC:
sta->sdata->u.mgd.ap_smps = IEEE80211_SMPS_STATIC;
sdata->smps_mode = IEEE80211_SMPS_STATIC;
break;
case WLAN_HT_SMPS_CONTROL_DISABLED:
default: /* shouldn't happen since we don't send that */
sta->sdata->u.mgd.ap_smps = IEEE80211_SMPS_OFF;
sdata->smps_mode = IEEE80211_SMPS_OFF;
break;
}
ieee80211_queue_work(&local->hw, &local->recalc_smps);
ieee80211_queue_work(&local->hw, &sdata->recalc_smps);
}
}