mac80211: reject TSPEC TIDs (TSIDs) for aggregation
Since mac80211 doesn't currently support TSIDs 8-15 which can
only be used after QoS TSPEC negotiation (and not even after
WMM negotiation), reject attempts to set up aggregation
sessions for them, which might confuse drivers. In mac80211
we do correctly handle that, but the TSIDs should never get
used anyway, and drivers might not be able to handle it.
Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 5650c46..45319cc 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -584,6 +584,9 @@
ieee80211_hw_check(&local->hw, TX_AMPDU_SETUP_IN_HW))
return -EINVAL;
+ if (WARN_ON(tid >= IEEE80211_FIRST_TSPEC_TSID))
+ return -EINVAL;
+
ht_dbg(sdata, "Open BA session requested for %pM tid %u\n",
pubsta->addr, tid);