The tid which is given in addba/delba req event is not
just tid but also muxed with the assoc id (MSB 4 bits)
which can be used to determine the corresponding connected
station in softap mode. The actual tid is LSB 4 bits. Using
the tid as it is with rx_tid[] would result in OOB or invalid
memory access in AP mode.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath6kl/txrx.c | 25 +++++++++++++++++++++++--
1 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath6kl/txrx.c b/drivers/net/wireless/ath/ath6kl/txrx.c
index 8407d01..8cf7b2f 100644
--- a/drivers/net/wireless/ath/ath6kl/txrx.c
+++ b/drivers/net/wireless/ath/ath6kl/txrx.c
@@ -17,6 +17,17 @@
#include "core.h"
#include "debug.h"
+/*
+ * tid - tid_mux0..tid_mux3
+ * aid - tid_mux4..tid_mux7
+ */
+#define ATH6KL_TID_MASK 0xf
+
+static inline u8 ath6kl_get_tid(u8 tid_mux)
+{
+ return tid_mux & ATH6KL_TID_MASK;
+}
+
static u8 ath6kl_ibss_map_epid(struct sk_buff *skb, struct net_device *dev,
u32 *map_no)
{
@@ -1602,7 +1613,7 @@ static void aggr_delete_tid_state(struct aggr_info_conn *aggr_conn, u8 tid)
memset(stats, 0, sizeof(struct rxtid_stats));
}
-void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid, u16 seq_no,
+void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid_mux, u16 seq_no,
u8 win_sz)
{
struct aggr_info *p_aggr = vif->aggr_cntxt;
@@ -1610,12 +1621,17 @@ void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid, u16 seq_no,
struct rxtid *rxtid;
struct rxtid_stats *stats;
u16 hold_q_size;
+ u8 tid;
if (!p_aggr || !p_aggr->aggr_conn)
return;
aggr_conn = p_aggr->aggr_conn;
+ tid = ath6kl_get_tid(tid_mux);
+ if (tid >= NUM_OF_TIDS)
+ return;
+
rxtid = &aggr_conn->rx_tid[tid];
stats = &aggr_conn->stat[tid];
@@ -1691,15 +1707,20 @@ struct aggr_info *aggr_init(struct ath6kl_vif *vif)
return p_aggr;
}
-void aggr_recv_delba_req_evt(struct ath6kl_vif *vif, u8 tid)
+void aggr_recv_delba_req_evt(struct ath6kl_vif *vif, u8 tid_mux)
{
struct aggr_info *p_aggr = vif->aggr_cntxt;
struct rxtid *rxtid;
struct aggr_info_conn *aggr_conn;
+ u8 tid;
if (!p_aggr || !p_aggr->aggr_conn)
return;
+ tid = ath6kl_get_tid(tid_mux);
+ if (tid >= NUM_OF_TIDS)
+ return;
+
aggr_conn = p_aggr->aggr_conn;
rxtid = &aggr_conn->rx_tid[tid];
--
1.7.0.4
--
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