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Commit eb2ba62e authored by Ron Rindjunsky's avatar Ron Rindjunsky Committed by John W. Linville
Browse files

mac80211: A-MPDU add debugfs support 



This patch adds A-MPDU status report per STA to the debugfs.
The option to de/activate A-MPDU through debugfs is also present.

Signed-off-by: default avatarRon Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent fe3bf0f5

net/mac80211/debugfs_sta.c

+116 −0
Original line number Diff line number Diff line
@@ -55,6 +55,13 @@ static const struct file_operations sta_ ##name## _ops = { \ 
	.open = mac80211_open_file_generic,				\

}



#define STA_OPS_WR(name)						\

static const struct file_operations sta_ ##name## _ops = {		\

	.read = sta_##name##_read,					\

	.write = sta_##name##_write,					\

	.open = mac80211_open_file_generic,				\

}



#define STA_FILE(name, field, format)					\

		STA_READ_##format(name, field)				\

		STA_OPS(name)
@@ -191,6 +198,113 @@ static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf, 
STA_OPS(wme_tx_queue);

#endif



static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,

					size_t count, loff_t *ppos)

{

	char buf[768], *p = buf;

	int i;

	struct sta_info *sta = file->private_data;

	p += scnprintf(p, sizeof(buf)+buf-p, "Agg state for STA is:\n");

	p += scnprintf(p, sizeof(buf)+buf-p, " STA next dialog_token is %d \n "

			"TIDs info is: \n TID :",

			(sta->ampdu_mlme.dialog_token_allocator + 1));

	for (i = 0; i < STA_TID_NUM; i++)

		p += scnprintf(p, sizeof(buf)+buf-p, "%5d", i);



	p += scnprintf(p, sizeof(buf)+buf-p, "\n RX  :");

	for (i = 0; i < STA_TID_NUM; i++)

		p += scnprintf(p, sizeof(buf)+buf-p, "%5d",

	sta->ampdu_mlme.tid_rx[i].state);



	p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");

	for (i = 0; i < STA_TID_NUM; i++)

		p += scnprintf(p, sizeof(buf)+buf-p, "%5d",

			sta->ampdu_mlme.tid_rx[i].dialog_token);



	p += scnprintf(p, sizeof(buf)+buf-p, "\n TX  :");

	for (i = 0; i < STA_TID_NUM; i++)

		p += scnprintf(p, sizeof(buf)+buf-p, "%5d",

			sta->ampdu_mlme.tid_tx[i].state);



	p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");

	for (i = 0; i < STA_TID_NUM; i++)

		p += scnprintf(p, sizeof(buf)+buf-p, "%5d",

			sta->ampdu_mlme.tid_tx[i].dialog_token);



	p += scnprintf(p, sizeof(buf)+buf-p, "\n SSN :");

	for (i = 0; i < STA_TID_NUM; i++)

		p += scnprintf(p, sizeof(buf)+buf-p, "%5d",

			sta->ampdu_mlme.tid_tx[i].ssn);



	p += scnprintf(p, sizeof(buf)+buf-p, "\n");



	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);

}



static ssize_t sta_agg_status_write(struct file *file,

		const char __user *user_buf, size_t count, loff_t *ppos)

{

	struct sta_info *sta = file->private_data;

	struct net_device *dev = sta->dev;

	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

	struct ieee80211_hw *hw = &local->hw;

	u8 *da = sta->addr;

	static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0,

					0, 0, 0, 0, 0, 0, 0, 0};

	static int tid_static_rx[16] = {1, 1, 1, 1, 1, 1, 1, 1,

					1, 1, 1, 1, 1, 1, 1, 1};

	char *endp;

	char buf[32];

	int buf_size, rs;

	unsigned int tid_num;

	char state[4];



	memset(buf, 0x00, sizeof(buf));

	buf_size = min(count, (sizeof(buf)-1));

	if (copy_from_user(buf, user_buf, buf_size))

		return -EFAULT;



	tid_num = simple_strtoul(buf, &endp, 0);

	if (endp == buf)

		return -EINVAL;



	if ((tid_num >= 100) && (tid_num <= 115)) {

		/* toggle Rx aggregation command */

		tid_num = tid_num - 100;

		if (tid_static_rx[tid_num] == 1) {

			strcpy(state, "off ");

			ieee80211_sta_stop_rx_ba_session(dev, da, tid_num, 0,

					WLAN_REASON_QSTA_REQUIRE_SETUP);

			sta->ampdu_mlme.tid_rx[tid_num].buf_size = 0xFF;

			tid_static_rx[tid_num] = 0;

		} else {

			strcpy(state, "on ");

			sta->ampdu_mlme.tid_rx[tid_num].buf_size = 0x00;

			tid_static_rx[tid_num] = 1;

		}

		printk(KERN_DEBUG "debugfs - try switching tid %u %s\n",

				tid_num, state);

	} else if ((tid_num >= 0) && (tid_num <= 15)) {

		/* toggle Tx aggregation command */

		if (tid_static_tx[tid_num] == 0) {

			strcpy(state, "on ");

			rs =  ieee80211_start_tx_ba_session(hw, da, tid_num);

			if (rs == 0)

				tid_static_tx[tid_num] = 1;

		} else {

			strcpy(state, "off");

			rs =  ieee80211_stop_tx_ba_session(hw, da, tid_num, 1);

			if (rs == 0)

				tid_static_tx[tid_num] = 0;

		}

		printk(KERN_DEBUG "debugfs - switching tid %u %s, return=%d\n",

				tid_num, state, rs);

	}



	return count;

}

STA_OPS_WR(agg_status);



#define DEBUGFS_ADD(name) \

	sta->debugfs.name = debugfs_create_file(#name, 0444, \

		sta->debugfs.dir, sta, &sta_ ##name## _ops);
@@ -224,6 +338,7 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta) 
	DEBUGFS_ADD(wme_rx_queue);

	DEBUGFS_ADD(wme_tx_queue);

#endif

	DEBUGFS_ADD(agg_status);

}



void ieee80211_sta_debugfs_remove(struct sta_info *sta)
@@ -238,6 +353,7 @@ void ieee80211_sta_debugfs_remove(struct sta_info *sta) 
	DEBUGFS_DEL(wme_rx_queue);

	DEBUGFS_DEL(wme_tx_queue);

#endif

	DEBUGFS_DEL(agg_status);



	debugfs_remove(sta->debugfs.dir);

	sta->debugfs.dir = NULL;

net/mac80211/sta_info.h

+1 −0
Original line number Diff line number Diff line
@@ -192,6 +192,7 @@ struct sta_info { 
		struct dentry *wme_rx_queue;

		struct dentry *wme_tx_queue;

#endif

		struct dentry *agg_status;

	} debugfs;

#endif

};