Add an external facing function to manually set the RX A-MPDU parameters

for re-ordering.

Devices like if_rsu don't pass through action/management frames but do send
firmware commands to inform us of things.  One of those notifications is
the RX A-MPDU negotiated parameters.

2 files changed, 40 insertions, 0 deletions

diff --git a/sys/net80211/ieee80211_ht.c b/sys/net80211/ieee80211_ht.c
index d83cf65..09c007a 100644
--- a/sys/net80211/ieee80211_ht.c
+++ b/sys/net80211/ieee80211_ht.c
@@ -558,6 +558,43 @@ ampdu_rx_start(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap,
 }
 
 /*
+ * Public function; manually setup the RX ampdu state.
+ */
+int
+ieee80211_ampdu_rx_start_ext(struct ieee80211_node *ni, int tid, int seq, int baw)
+{
+	struct ieee80211_rx_ampdu *rap;
+
+	/* XXX TODO: sanity check tid, seq, baw */
+
+	rap = &ni->ni_rx_ampdu[tid];
+
+	if (rap->rxa_flags & IEEE80211_AGGR_RUNNING) {
+		/*
+		 * AMPDU previously setup and not terminated with a DELBA,
+		 * flush the reorder q's in case anything remains.
+		 */
+		ampdu_rx_purge(rap);
+	}
+
+	memset(rap, 0, sizeof(*rap));
+	rap->rxa_wnd = (baw== 0) ?
+	    IEEE80211_AGGR_BAWMAX : min(baw, IEEE80211_AGGR_BAWMAX);
+	rap->rxa_start = seq;
+	rap->rxa_flags |=  IEEE80211_AGGR_RUNNING | IEEE80211_AGGR_XCHGPEND;
+
+	IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_11N, ni,
+	    "%s: tid=%d, start=%d, wnd=%d, flags=0x%08x\n",
+	    __func__,
+	    tid,
+	    seq,
+	    rap->rxa_wnd,
+	    rap->rxa_flags);
+
+	return 0;
+}
+
+/*
  * Stop A-MPDU rx processing for the specified TID.
  */
 static void
diff --git a/sys/net80211/ieee80211_ht.h b/sys/net80211/ieee80211_ht.h
index 3bda5fe..f7ba6c6 100644
--- a/sys/net80211/ieee80211_ht.h
+++ b/sys/net80211/ieee80211_ht.h
@@ -200,4 +200,7 @@ uint8_t	*ieee80211_add_htinfo_vendor(uint8_t *, struct ieee80211_node *);
 struct ieee80211_beacon_offsets;
 void	ieee80211_ht_update_beacon(struct ieee80211vap *,
 		struct ieee80211_beacon_offsets *);
+int	ieee80211_ampdu_rx_start_ext(struct ieee80211_node *ni, int tid,
+	    int seq, int baw);
+
 #endif /* _NET80211_IEEE80211_HT_H_ */