Sync BAR frame handling with out of tree work:

o correct BAR frame construction for AMPDU
o retransmit BAR frames until ACK'd or timeout (use tunables to
  control behaviour, default is very aggressive)
o defer seq# update until BAR frame is ACK'd
o add BAR response handling callback for driver to interpose and
  push new state to device or push pending aggregates

While here also:
o add backpointer to node in the per-tid tx aggregation data structure
o move ampdu tx state setup/teardown work to separate functions

1 files changed, 3 insertions, 0 deletions

diff --git a/sys/net80211/ieee80211_var.h b/sys/net80211/ieee80211_var.h
index 0136701..0697f6f 100644
--- a/sys/net80211/ieee80211_var.h
+++ b/sys/net80211/ieee80211_var.h
@@ -273,6 +273,9 @@ struct ieee80211com {
 				    int status, int baparamset, int batimeout);
 	void			(*ic_addba_stop)(struct ieee80211_node *,
 				    struct ieee80211_tx_ampdu *);
+	/* BAR response received */
+	void			(*ic_bar_response)(struct ieee80211_node *,
+				    struct ieee80211_tx_ampdu *, int status);
 };
 
 struct ieee80211_aclator;