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authorLiad Kaufman <liad.kaufman@intel.com>2014-11-19 14:47:38 +0300
committerJohannes Berg <johannes.berg@intel.com>2014-11-19 20:45:36 +0300
commitb6da911b3cf1d342f2f7123c9eb6463d299bca4e (patch)
tree7e90aaf36e8149ca731e4d8589d9d18556de933b /net/mac80211/agg-tx.c
parent4f9610d528a6aa5642fa350fa93fbd905a753ae8 (diff)
downloadlinux-b6da911b3cf1d342f2f7123c9eb6463d299bca4e.tar.xz
mac80211: synchronously reserve TID per station
In TDLS (e.g., TDLS off-channel) there is a requirement for some drivers to supply an unused TID between the AP and the device to the FW, to allow sending PTI requests and to allow the FW to aggregate on a specific TID for better throughput. To ensure that the allocated TID is indeed unused, this patch introduces an API for blocking the driver from TXing on that TID. Signed-off-by: Liad Kaufman <liad.kaufman@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/agg-tx.c')
-rw-r--r--net/mac80211/agg-tx.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 9242c60048cf..a360c15cc978 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -509,6 +509,10 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
struct tid_ampdu_tx *tid_tx;
int ret = 0;
+ if (WARN(sta->reserved_tid == tid,
+ "Requested to start BA session on reserved tid=%d", tid))
+ return -EINVAL;
+
trace_api_start_tx_ba_session(pubsta, tid);
if (WARN_ON_ONCE(!local->ops->ampdu_action))
@@ -765,6 +769,9 @@ int ieee80211_stop_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid)
goto unlock;
}
+ WARN(sta->reserved_tid == tid,
+ "Requested to stop BA session on reserved tid=%d", tid);
+
if (test_bit(HT_AGG_STATE_STOPPING, &tid_tx->state)) {
/* already in progress stopping it */
ret = 0;