From c6e133277bcf05597ad32f2699b928b284138d59 Mon Sep 17 00:00:00 2001 From: Karl Beldan Date: Thu, 23 Jan 2014 20:06:34 +0100 Subject: mac80211: send {ADD,DEL}BA on AC_VO like other mgmt frames, as per spec ATM, {ADD,DEL}BA and BAR frames are sent on the AC matching the TID of the BA parameters. In the discussion [1] about this patch, Johannes recalled that it fixed some races with the DELBA and indeed this behavior was introduced in [2]. While [2] is right for the BARs, the part queueing the {ADD,DEL}BAs on their BA params TID AC violates the spec and is more a workaround for some drivers. Helmut expressed some concerns wrt such drivers, in particular DELBAs in rt2x00. ATM, DELBAs are sent after a driver has called (hence "purposely") ieee80211_start_tx_ba_cb_irqsafe and Johannes and Emmanuel gave some details wrt intentions behind the split of the IEEE80211_AMPDU_TX_STOP_* given to the driver ampdu_action supposed to call this function, which could prove handy to people trying to do the right thing in faulty drivers (if their fw/hw don't get in their way). [1] http://mid.gmane.org/1390391564-18481-1-git-send-email-karl.beldan@gmail.com [2] Commit: cf6bb79ad828 ("mac80211: Use appropriate TID for sending BAR, ADDBA and DELBA frames") Signed-off-by: Karl Beldan Cc: Helmut Schaa Cc: Emmanuel Grumbach Signed-off-by: Johannes Berg --- net/mac80211/agg-tx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/mac80211/agg-tx.c') diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c index 13b7683de5a4..ce9633a3cfb0 100644 --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c @@ -107,7 +107,7 @@ static void ieee80211_send_addba_request(struct ieee80211_sub_if_data *sdata, mgmt->u.action.u.addba_req.start_seq_num = cpu_to_le16(start_seq_num << 4); - ieee80211_tx_skb_tid(sdata, skb, tid); + ieee80211_tx_skb(sdata, skb); } void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn) -- cgit v1.2.1