mac80211: add support for Rx reordering offloading
Some drivers may be performing most of Tx/Rx
aggregation on their own (e.g. in firmware)
including AddBa/DelBa negotiations but may
otherwise require Rx reordering assistance.
The patch exports 2 new functions for establishing
Rx aggregation sessions in assumption device
driver has taken care of the necessary
negotiations.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
[fix endian bug]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 2a12b8a..29be885 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1140,6 +1140,7 @@
struct sk_buff *skb;
struct sta_info *sta;
struct ieee80211_ra_tid *ra_tid;
+ struct ieee80211_rx_agg *rx_agg;
if (!ieee80211_sdata_running(sdata))
return;
@@ -1167,6 +1168,34 @@
ra_tid = (void *)&skb->cb;
ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra,
ra_tid->tid);
+ } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_START) {
+ rx_agg = (void *)&skb->cb;
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get_bss(sdata, rx_agg->addr);
+ if (sta) {
+ u16 last_seq;
+
+ last_seq = le16_to_cpu(
+ sta->last_seq_ctrl[rx_agg->tid]);
+
+ __ieee80211_start_rx_ba_session(sta,
+ 0, 0,
+ ieee80211_sn_inc(last_seq),
+ 1, rx_agg->tid,
+ IEEE80211_MAX_AMPDU_BUF,
+ false);
+ }
+ mutex_unlock(&local->sta_mtx);
+ } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_STOP) {
+ rx_agg = (void *)&skb->cb;
+ mutex_lock(&local->sta_mtx);
+ sta = sta_info_get_bss(sdata, rx_agg->addr);
+ if (sta)
+ __ieee80211_stop_rx_ba_session(sta,
+ rx_agg->tid,
+ WLAN_BACK_RECIPIENT, 0,
+ false);
+ mutex_unlock(&local->sta_mtx);
} else if (ieee80211_is_action(mgmt->frame_control) &&
mgmt->u.action.category == WLAN_CATEGORY_BACK) {
int len = skb->len;