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authorStefan Sperling <stsp@cvs.openbsd.org>2021-12-03 12:40:16 +0000
committerStefan Sperling <stsp@cvs.openbsd.org>2021-12-03 12:40:16 +0000
commit63c341751462aadfbefca44bba02aa90f9070f7f (patch)
tree074c18c0e92518ed4401ffc080610956f52e5ee5
parent067cbc8581ca0c9298a8dac5e48f33cb0ece2a23 (diff)
Ignore ADDBA requests from our AP while we are roaming away from it.
Noticed while testing iwm/iwx roaming patches, where my AP would request a new Rx BA session when we had already decided to roam away. There is no need to set up a new Rx BA session with our old AP which we would have to immediately tear down again anyway.
-rw-r--r--sys/net80211/ieee80211_input.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/net80211/ieee80211_input.c b/sys/net80211/ieee80211_input.c
index 888a39c43dd..bb6367fd1d5 100644
--- a/sys/net80211/ieee80211_input.c
+++ b/sys/net80211/ieee80211_input.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ieee80211_input.c,v 1.239 2021/10/11 09:02:01 stsp Exp $ */
+/* $OpenBSD: ieee80211_input.c,v 1.240 2021/12/03 12:40:15 stsp Exp $ */
/*-
* Copyright (c) 2001 Atsushi Onoe
@@ -2822,6 +2822,10 @@ ieee80211_recv_addba_req(struct ieee80211com *ic, struct mbuf *m,
/* The driver is still processing an ADDBA request for this tid. */
if (ba->ba_state == IEEE80211_BA_REQUESTED)
return;
+ /* If we are in the process of roaming between APs, ignore. */
+ if ((ic->ic_flags & IEEE80211_F_BGSCAN) &&
+ (ic->ic_xflags & IEEE80211_F_TX_MGMT_ONLY))
+ return;
/* check if we already have a Block Ack agreement for this RA/TID */
if (ba->ba_state == IEEE80211_BA_AGREED) {
/* XXX should we update the timeout value? */