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authorJohannes Berg <johannes.berg@intel.com>2016-09-14 11:38:31 +0200
committerJohannes Berg <johannes.berg@intel.com>2016-09-15 10:08:52 +0200
commit85d5313ed717ad60769491c7c072d23bc0a68e7a (patch)
tree4f39837717938d9cbf341704d0c8d06113b6b3f2 /net
parent0b97a484e52cb423662eb98904aad82dafcc1f10 (diff)
downloadlinux-stericsson-85d5313ed717ad60769491c7c072d23bc0a68e7a.tar.gz
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>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/agg-rx.c8
-rw-r--r--net/mac80211/agg-tx.c3
2 files changed, 10 insertions, 1 deletions
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index a9aff6079c42..afa94687d5e1 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -261,10 +261,16 @@ void __ieee80211_start_rx_ba_session(struct sta_info *sta,
.timeout = timeout,
.ssn = start_seq_num,
};
-
int i, ret = -EOPNOTSUPP;
u16 status = WLAN_STATUS_REQUEST_DECLINED;
+ if (tid >= IEEE80211_FIRST_TSPEC_TSID) {
+ ht_dbg(sta->sdata,
+ "STA %pM requests BA session on unsupported tid %d\n",
+ sta->sta.addr, tid);
+ goto end_no_lock;
+ }
+
if (!sta->sta.ht_cap.ht_supported) {
ht_dbg(sta->sdata,
"STA %pM erroneously requests BA session on tid %d w/o QoS\n",
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 5650c46bf91a..45319cc01121 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -584,6 +584,9 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
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);