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>
author: Ben Greear <greearb@candelatech.com> 2011-01-10 02:11:49 -0500
committer: John W. Linville <linville@tuxdriver.com> 2011-01-21 15:32:22 -0500
commit: 7f010c93d73847ffc6b74b572fef9a63e305d65e (patch)
tree: 9ed4a9cb46b55995b415f255fc83da7f4e4a95f8 /drivers/net/wireless
parent: bda8addaed08834956d5695212717893a2e0cb13 (diff)
4 files changed, 115 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index aadb5de9ac76..d4640117fa8c 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -254,7 +254,10 @@ struct ath_atx_tid {
 };
 struct ath_node {
-        struct ath_common *common;
+#ifdef CONFIG_ATH9K_DEBUGFS
+        struct list_head list; /* for sc->nodes */
+        struct ieee80211_sta *sta; /* station struct we're part of */
+#endif
        struct ath_atx_tid tid[WME_NUM_TID];
        struct ath_atx_ac ac[WME_NUM_AC];
        u16 maxampdu;
@@ -638,6 +641,8 @@ struct ath_softc {
 #ifdef CONFIG_ATH9K_DEBUGFS
        struct ath9k_debug debug;
+        spinlock_t nodes_lock;
+        struct list_head nodes; /* basically, stations */
 #endif
        struct ath_beacon_config cur_beacon_conf;
        struct delayed_work tx_complete_work;
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index faf84e499c8f..650f00f59d79 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -587,6 +587,8 @@ static const struct file_operations fops_wiphy = {
                sc->debug.stats.txstats[WME_AC_BK].elem, \
                sc->debug.stats.txstats[WME_AC_VI].elem, \
                sc->debug.stats.txstats[WME_AC_VO].elem); \
+                if (len >= size)                          \
+                        goto done;                        \
 } while(0)
 #define PRX(str, elem)                                                  \
@@ -597,6 +599,8 @@ do {									\
                        (unsigned int)(sc->tx.txq[WME_AC_BK].elem),     \
                        (unsigned int)(sc->tx.txq[WME_AC_VI].elem),     \
                        (unsigned int)(sc->tx.txq[WME_AC_VO].elem));    \
+        if (len >= size)                                                \
+                goto done;                                              \
 } while(0)
 #define PRQLE(str, elem)                                                \
@@ -607,6 +611,8 @@ do {									\
                        list_empty(&sc->tx.txq[WME_AC_BK].elem),        \
                        list_empty(&sc->tx.txq[WME_AC_VI].elem),        \
                        list_empty(&sc->tx.txq[WME_AC_VO].elem));       \
+        if (len >= size)                                                \
+                goto done;                                              \
 } while (0)
 static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
@@ -614,7 +620,7 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
 {
        struct ath_softc *sc = file->private_data;
        char *buf;
-        unsigned int len = 0, size = 4000;
+        unsigned int len = 0, size = 8000;
        int i;
        ssize_t retval = 0;
        char tmp[32];
@@ -623,7 +629,10 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
        if (buf == NULL)
                return -ENOMEM;
-        len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
+        len += sprintf(buf, "Num-Tx-Queues: %i  tx-queues-setup: 0x%x\n"
+                       "%30s %10s%10s%10s\n\n",
+                       ATH9K_NUM_TX_QUEUES, sc->tx.txqsetup,
+                       "BE", "BK", "VI", "VO");
        PR("MPDUs Queued:    ", queued);
        PR("MPDUs Completed: ", completed);
@@ -644,6 +653,14 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
        PR("hw-put-tx-buf:   ", puttxbuf);
        PR("hw-tx-start:     ", txstart);
        PR("hw-tx-proc-desc: ", txprocdesc);
+        len += snprintf(buf + len, size - len,
+                        "%s%11p%11p%10p%10p\n", "txq-memory-address:",
+                        &(sc->tx.txq[WME_AC_BE]),
+                        &(sc->tx.txq[WME_AC_BK]),
+                        &(sc->tx.txq[WME_AC_VI]),
+                        &(sc->tx.txq[WME_AC_VO]));
+        if (len >= size)
+                goto done;
        PRX("axq-qnum:        ", axq_qnum);
        PRX("axq-depth:       ", axq_depth);
@@ -661,6 +678,68 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
                snprintf(tmp, sizeof(tmp) - 1, "txq_fifo[%i] empty: ", i);
                PRQLE(tmp, txq_fifo[i]);
        }
+done:
+        if (len > size)
+                len = size;
+        retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+        kfree(buf);
+        return retval;
+}
+static ssize_t read_file_stations(struct file *file, char __user *user_buf,
+                                  size_t count, loff_t *ppos)
+{
+        struct ath_softc *sc = file->private_data;
+        char *buf;
+        unsigned int len = 0, size = 64000;
+        struct ath_node *an = NULL;
+        ssize_t retval = 0;
+        int q;
+        buf = kzalloc(size, GFP_KERNEL);
+        if (buf == NULL)
+                return -ENOMEM;
+        len += snprintf(buf + len, size - len,
+                        "Stations:\n"
+                        " tid: addr sched paused buf_q-empty an ac\n"
+                        " ac: addr sched tid_q-empty txq\n");
+        spin_lock(&sc->nodes_lock);
+        list_for_each_entry(an, &sc->nodes, list) {
+                len += snprintf(buf + len, size - len,
+                                "%pM\n", an->sta->addr);
+                if (len >= size)
+                        goto done;
+                for (q = 0; q < WME_NUM_TID; q++) {
+                        struct ath_atx_tid *tid = &(an->tid[q]);
+                        len += snprintf(buf + len, size - len,
+                                        " tid: %p %s %s %i %p %p\n",
+                                        tid, tid->sched ? "sched" : "idle",
+                                        tid->paused ? "paused" : "running",
+                                        list_empty(&tid->buf_q),
+                                        tid->an, tid->ac);
+                        if (len >= size)
+                                goto done;
+                }
+                for (q = 0; q < WME_NUM_AC; q++) {
+                        struct ath_atx_ac *ac = &(an->ac[q]);
+                        len += snprintf(buf + len, size - len,
+                                        " ac: %p %s %i %p\n",
+                                        ac, ac->sched ? "sched" : "idle",
+                                        list_empty(&ac->tid_q), ac->txq);
+                        if (len >= size)
+                                goto done;
+                }
+        }
+done:
+        spin_unlock(&sc->nodes_lock);
        if (len > size)
                len = size;
@@ -708,6 +787,13 @@ static const struct file_operations fops_xmit = {
        .llseek = default_llseek,
 };
+static const struct file_operations fops_stations = {
+        .read = read_file_stations,
+        .open = ath9k_debugfs_open,
+        .owner = THIS_MODULE,
+        .llseek = default_llseek,
+};
 static ssize_t read_file_recv(struct file *file, char __user *user_buf,
                              size_t count, loff_t *ppos)
 {
@@ -945,6 +1031,10 @@ int ath9k_init_debug(struct ath_hw *ah)
                        sc, &fops_xmit))
                goto err;
+        if (!debugfs_create_file("stations", S_IRUSR, sc->debug.debugfs_phy,
+                        sc, &fops_stations))
+                goto err;
        if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy,
                        sc, &fops_recv))
                goto err;
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 23b299818b18..59c01ca4379e 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -559,6 +559,10 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
        spin_lock_init(&sc->sc_serial_rw);
        spin_lock_init(&sc->sc_pm_lock);
        mutex_init(&sc->mutex);
+#ifdef CONFIG_ATH9K_DEBUGFS
+        spin_lock_init(&sc->nodes_lock);
+        INIT_LIST_HEAD(&sc->nodes);
+#endif
        tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
        tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
                     (unsigned long)sc);
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index c03184e7bffe..bed6eb97fac9 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -548,6 +548,12 @@ static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta)
        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 @@ static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
 {
        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);
 }
author	Ben Greear <greearb@candelatech.com>	2011-01-10 02:11:49 -0500
committer	John W. Linville <linville@tuxdriver.com>	2011-01-21 15:32:22 -0500
commit	7f010c93d73847ffc6b74b572fef9a63e305d65e (patch)
tree	9ed4a9cb46b55995b415f255fc83da7f4e4a95f8 /drivers/net/wireless
parent	bda8addaed08834956d5695212717893a2e0cb13 (diff)

diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index aadb5de9ac76..d4640117fa8c 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -254,7 +254,10 @@ struct ath_atx_tid {
254	};	254	};
255		255
256	struct ath_node {	256	struct ath_node {
257	struct ath_common *common;	257	#ifdef CONFIG_ATH9K_DEBUGFS
		258	struct list_head list; /* for sc->nodes */
		259	struct ieee80211_sta sta; / station struct we're part of */
		260	#endif
258	struct ath_atx_tid tid[WME_NUM_TID];	261	struct ath_atx_tid tid[WME_NUM_TID];
259	struct ath_atx_ac ac[WME_NUM_AC];	262	struct ath_atx_ac ac[WME_NUM_AC];
260	u16 maxampdu;	263	u16 maxampdu;
@@ -638,6 +641,8 @@ struct ath_softc {
638		641
639	#ifdef CONFIG_ATH9K_DEBUGFS	642	#ifdef CONFIG_ATH9K_DEBUGFS
640	struct ath9k_debug debug;	643	struct ath9k_debug debug;
		644	spinlock_t nodes_lock;
		645	struct list_head nodes; /* basically, stations */
641	#endif	646	#endif
642	struct ath_beacon_config cur_beacon_conf;	647	struct ath_beacon_config cur_beacon_conf;
643	struct delayed_work tx_complete_work;	648	struct delayed_work tx_complete_work;


diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index faf84e499c8f..650f00f59d79 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -587,6 +587,8 @@ static const struct file_operations fops_wiphy = {
587	sc->debug.stats.txstats[WME_AC_BK].elem, \	587	sc->debug.stats.txstats[WME_AC_BK].elem, \
588	sc->debug.stats.txstats[WME_AC_VI].elem, \	588	sc->debug.stats.txstats[WME_AC_VI].elem, \
589	sc->debug.stats.txstats[WME_AC_VO].elem); \	589	sc->debug.stats.txstats[WME_AC_VO].elem); \
		590	if (len >= size) \
		591	goto done; \
590	} while(0)	592	} while(0)
591		593
592	#define PRX(str, elem) \	594	#define PRX(str, elem) \
@@ -597,6 +599,8 @@ do { \
597	(unsigned int)(sc->tx.txq[WME_AC_BK].elem), \	599	(unsigned int)(sc->tx.txq[WME_AC_BK].elem), \
598	(unsigned int)(sc->tx.txq[WME_AC_VI].elem), \	600	(unsigned int)(sc->tx.txq[WME_AC_VI].elem), \
599	(unsigned int)(sc->tx.txq[WME_AC_VO].elem)); \	601	(unsigned int)(sc->tx.txq[WME_AC_VO].elem)); \
		602	if (len >= size) \
		603	goto done; \
600	} while(0)	604	} while(0)
601		605
602	#define PRQLE(str, elem) \	606	#define PRQLE(str, elem) \
@@ -607,6 +611,8 @@ do { \
607	list_empty(&sc->tx.txq[WME_AC_BK].elem), \	611	list_empty(&sc->tx.txq[WME_AC_BK].elem), \
608	list_empty(&sc->tx.txq[WME_AC_VI].elem), \	612	list_empty(&sc->tx.txq[WME_AC_VI].elem), \
609	list_empty(&sc->tx.txq[WME_AC_VO].elem)); \	613	list_empty(&sc->tx.txq[WME_AC_VO].elem)); \
		614	if (len >= size) \
		615	goto done; \
610	} while (0)	616	} while (0)
611		617
612	static ssize_t read_file_xmit(struct file file, char __user user_buf,	618	static ssize_t read_file_xmit(struct file file, char __user user_buf,
@@ -614,7 +620,7 @@ static ssize_t read_file_xmit(struct file file, char __user user_buf,
614	{	620	{
615	struct ath_softc *sc = file->private_data;	621	struct ath_softc *sc = file->private_data;
616	char *buf;	622	char *buf;
617	unsigned int len = 0, size = 4000;	623	unsigned int len = 0, size = 8000;
618	int i;	624	int i;
619	ssize_t retval = 0;	625	ssize_t retval = 0;
620	char tmp[32];	626	char tmp[32];
@@ -623,7 +629,10 @@ static ssize_t read_file_xmit(struct file file, char __user user_buf,
623	if (buf == NULL)	629	if (buf == NULL)
624	return -ENOMEM;	630	return -ENOMEM;
625		631
626	len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");	632	len += sprintf(buf, "Num-Tx-Queues: %i tx-queues-setup: 0x%x\n"
		633	"%30s %10s%10s%10s\n\n",
		634	ATH9K_NUM_TX_QUEUES, sc->tx.txqsetup,
		635	"BE", "BK", "VI", "VO");
627		636
628	PR("MPDUs Queued: ", queued);	637	PR("MPDUs Queued: ", queued);
629	PR("MPDUs Completed: ", completed);	638	PR("MPDUs Completed: ", completed);
@@ -644,6 +653,14 @@ static ssize_t read_file_xmit(struct file file, char __user user_buf,
644	PR("hw-put-tx-buf: ", puttxbuf);	653	PR("hw-put-tx-buf: ", puttxbuf);
645	PR("hw-tx-start: ", txstart);	654	PR("hw-tx-start: ", txstart);
646	PR("hw-tx-proc-desc: ", txprocdesc);	655	PR("hw-tx-proc-desc: ", txprocdesc);
		656	len += snprintf(buf + len, size - len,
		657	"%s%11p%11p%10p%10p\n", "txq-memory-address:",
		658	&(sc->tx.txq[WME_AC_BE]),
		659	&(sc->tx.txq[WME_AC_BK]),
		660	&(sc->tx.txq[WME_AC_VI]),
		661	&(sc->tx.txq[WME_AC_VO]));
		662	if (len >= size)
		663	goto done;
647		664
648	PRX("axq-qnum: ", axq_qnum);	665	PRX("axq-qnum: ", axq_qnum);
649	PRX("axq-depth: ", axq_depth);	666	PRX("axq-depth: ", axq_depth);
@@ -661,6 +678,68 @@ static ssize_t read_file_xmit(struct file file, char __user user_buf,
661	snprintf(tmp, sizeof(tmp) - 1, "txq_fifo[%i] empty: ", i);	678	snprintf(tmp, sizeof(tmp) - 1, "txq_fifo[%i] empty: ", i);
662	PRQLE(tmp, txq_fifo[i]);	679	PRQLE(tmp, txq_fifo[i]);
663	}	680	}
		681
		682	done:
		683	if (len > size)
		684	len = size;
		685
		686	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
		687	kfree(buf);
		688
		689	return retval;
		690	}
		691
		692	static ssize_t read_file_stations(struct file file, char __user user_buf,
		693	size_t count, loff_t *ppos)
		694	{
		695	struct ath_softc *sc = file->private_data;
		696	char *buf;
		697	unsigned int len = 0, size = 64000;
		698	struct ath_node *an = NULL;
		699	ssize_t retval = 0;
		700	int q;
		701
		702	buf = kzalloc(size, GFP_KERNEL);
		703	if (buf == NULL)
		704	return -ENOMEM;
		705
		706	len += snprintf(buf + len, size - len,
		707	"Stations:\n"
		708	" tid: addr sched paused buf_q-empty an ac\n"
		709	" ac: addr sched tid_q-empty txq\n");
		710
		711	spin_lock(&sc->nodes_lock);
		712	list_for_each_entry(an, &sc->nodes, list) {
		713	len += snprintf(buf + len, size - len,
		714	"%pM\n", an->sta->addr);
		715	if (len >= size)
		716	goto done;
		717
		718	for (q = 0; q < WME_NUM_TID; q++) {
		719	struct ath_atx_tid *tid = &(an->tid[q]);
		720	len += snprintf(buf + len, size - len,
		721	" tid: %p %s %s %i %p %p\n",
		722	tid, tid->sched ? "sched" : "idle",
		723	tid->paused ? "paused" : "running",
		724	list_empty(&tid->buf_q),
		725	tid->an, tid->ac);
		726	if (len >= size)
		727	goto done;
		728	}
		729
		730	for (q = 0; q < WME_NUM_AC; q++) {
		731	struct ath_atx_ac *ac = &(an->ac[q]);
		732	len += snprintf(buf + len, size - len,
		733	" ac: %p %s %i %p\n",
		734	ac, ac->sched ? "sched" : "idle",
		735	list_empty(&ac->tid_q), ac->txq);
		736	if (len >= size)
		737	goto done;
		738	}
		739	}
		740
		741	done:
		742	spin_unlock(&sc->nodes_lock);
664	if (len > size)	743	if (len > size)
665	len = size;	744	len = size;
666		745
@@ -708,6 +787,13 @@ static const struct file_operations fops_xmit = {
708	.llseek = default_llseek,	787	.llseek = default_llseek,
709	};	788	};
710		789
		790	static const struct file_operations fops_stations = {
		791	.read = read_file_stations,
		792	.open = ath9k_debugfs_open,
		793	.owner = THIS_MODULE,
		794	.llseek = default_llseek,
		795	};
		796
711	static ssize_t read_file_recv(struct file file, char __user user_buf,	797	static ssize_t read_file_recv(struct file file, char __user user_buf,
712	size_t count, loff_t *ppos)	798	size_t count, loff_t *ppos)
713	{	799	{
@@ -945,6 +1031,10 @@ int ath9k_init_debug(struct ath_hw *ah)
945	sc, &fops_xmit))	1031	sc, &fops_xmit))
946	goto err;	1032	goto err;
947		1033
		1034	if (!debugfs_create_file("stations", S_IRUSR, sc->debug.debugfs_phy,
		1035	sc, &fops_stations))
		1036	goto err;
		1037
948	if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy,	1038	if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy,
949	sc, &fops_recv))	1039	sc, &fops_recv))
950	goto err;	1040	goto err;


diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index 23b299818b18..59c01ca4379e 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -559,6 +559,10 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
559	spin_lock_init(&sc->sc_serial_rw);	559	spin_lock_init(&sc->sc_serial_rw);
560	spin_lock_init(&sc->sc_pm_lock);	560	spin_lock_init(&sc->sc_pm_lock);
561	mutex_init(&sc->mutex);	561	mutex_init(&sc->mutex);
		562	#ifdef CONFIG_ATH9K_DEBUGFS
		563	spin_lock_init(&sc->nodes_lock);
		564	INIT_LIST_HEAD(&sc->nodes);
		565	#endif
562	tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);	566	tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
563	tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,	567	tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
564	(unsigned long)sc);	568	(unsigned long)sc);


diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index c03184e7bffe..bed6eb97fac9 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -548,6 +548,12 @@ static void ath_node_attach(struct ath_softc sc, struct ieee80211_sta sta)
548	struct ath_hw *ah = sc->sc_ah;	548	struct ath_hw *ah = sc->sc_ah;
549	an = (struct ath_node *)sta->drv_priv;	549	an = (struct ath_node *)sta->drv_priv;
550		550
		551	#ifdef CONFIG_ATH9K_DEBUGFS
		552	spin_lock(&sc->nodes_lock);
		553	list_add(&an->list, &sc->nodes);
		554	spin_unlock(&sc->nodes_lock);
		555	an->sta = sta;
		556	#endif
551	if ((ah->caps.hw_caps) & ATH9K_HW_CAP_APM)	557	if ((ah->caps.hw_caps) & ATH9K_HW_CAP_APM)
552	sc->sc_flags \|= SC_OP_ENABLE_APM;	558	sc->sc_flags \|= SC_OP_ENABLE_APM;
553		559
@@ -563,6 +569,13 @@ static void ath_node_detach(struct ath_softc sc, struct ieee80211_sta sta)
563	{	569	{
564	struct ath_node an = (struct ath_node )sta->drv_priv;	570	struct ath_node an = (struct ath_node )sta->drv_priv;
565		571
		572	#ifdef CONFIG_ATH9K_DEBUGFS
		573	spin_lock(&sc->nodes_lock);
		574	list_del(&an->list);
		575	spin_unlock(&sc->nodes_lock);
		576	an->sta = NULL;
		577	#endif
		578
566	if (sc->sc_flags & SC_OP_TXAGGR)	579	if (sc->sc_flags & SC_OP_TXAGGR)
567	ath_tx_node_cleanup(sc, an);	580	ath_tx_node_cleanup(sc, an);
568	}	581	}