ath9k: Keep track of stations for debugfs.
The stations hold the ath_node, which holds the tid
and other xmit logic structures. In order to debug
stuck xmit logic, we need a way to print out the tid
state for the stations.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index c03184e7..bed6eb9 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -548,6 +548,12 @@
struct ath_hw *ah = sc->sc_ah;
an = (struct ath_node *)sta->drv_priv;
+#ifdef CONFIG_ATH9K_DEBUGFS
+ spin_lock(&sc->nodes_lock);
+ list_add(&an->list, &sc->nodes);
+ spin_unlock(&sc->nodes_lock);
+ an->sta = sta;
+#endif
if ((ah->caps.hw_caps) & ATH9K_HW_CAP_APM)
sc->sc_flags |= SC_OP_ENABLE_APM;
@@ -563,6 +569,13 @@
{
struct ath_node *an = (struct ath_node *)sta->drv_priv;
+#ifdef CONFIG_ATH9K_DEBUGFS
+ spin_lock(&sc->nodes_lock);
+ list_del(&an->list);
+ spin_unlock(&sc->nodes_lock);
+ an->sta = NULL;
+#endif
+
if (sc->sc_flags & SC_OP_TXAGGR)
ath_tx_node_cleanup(sc, an);
}