mac80211: add block ack request capability
This patch adds block ack request capability
Signed-off-by: Ester Kummer <ester.kummer@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index f18cfd7..074f71a 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1404,14 +1404,15 @@
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
u16 frag, type;
+ __le16 fc;
struct ieee80211_tx_status_rtap_hdr *rthdr;
struct ieee80211_sub_if_data *sdata;
struct net_device *prev_dev = NULL;
+ struct sta_info *sta;
rcu_read_lock();
if (info->status.excessive_retries) {
- struct sta_info *sta;
sta = sta_info_get(local, hdr->addr1);
if (sta) {
if (test_sta_flags(sta, WLAN_STA_PS)) {
@@ -1426,8 +1427,24 @@
}
}
+ fc = hdr->frame_control;
+
+ if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) &&
+ (ieee80211_is_data_qos(fc))) {
+ u16 tid, ssn;
+ u8 *qc;
+ sta = sta_info_get(local, hdr->addr1);
+ if (sta) {
+ qc = ieee80211_get_qos_ctl(hdr);
+ tid = qc[0] & 0xf;
+ ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10)
+ & IEEE80211_SCTL_SEQ);
+ ieee80211_send_bar(sta->sdata->dev, hdr->addr1,
+ tid, ssn);
+ }
+ }
+
if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
- struct sta_info *sta;
sta = sta_info_get(local, hdr->addr1);
if (sta) {
ieee80211_handle_filtered_frame(local, sta, skb);