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Commit 4b28a80d authored by Jouni Malinen's avatar Jouni Malinen Committed by Kalle Valo
Browse files

ath6kl: Add debugfs file for target roam table 



The new roam_table debugfs file can be used to display the current
roam table from the target.

Signed-off-by: default avatarJouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent e8091281

drivers/net/wireless/ath/ath6kl/core.h

+4 −0
Original line number Diff line number Diff line
@@ -397,6 +397,7 @@ struct ath6kl_req_key { 
#define TESTMODE	     13

#define CLEAR_BSSFILTER_ON_BEACON 14

#define DTIM_PERIOD_AVAIL    15

#define ROAM_TBL_PEND        16



struct ath6kl {

	struct device *dev;
@@ -529,6 +530,9 @@ struct ath6kl { 
		struct {

			unsigned int invalid_rate;

		} war_stats;



		u8 *roam_tbl;

		unsigned int roam_tbl_len;

	} debug;

#endif /* CONFIG_ATH6KL_DEBUG */

};

drivers/net/wireless/ath/ath6kl/debug.c

+109 −0
Original line number Diff line number Diff line
@@ -966,6 +966,111 @@ static const struct file_operations fops_diag_reg_write = { 
	.llseek = default_llseek,

};



int ath6kl_debug_roam_tbl_event(struct ath6kl *ar, const void *buf,

				size_t len)

{

	const struct wmi_target_roam_tbl *tbl;

	u16 num_entries;



	if (len < sizeof(*tbl))

		return -EINVAL;



	tbl = (const struct wmi_target_roam_tbl *) buf;

	num_entries = le16_to_cpu(tbl->num_entries);

	if (sizeof(*tbl) + num_entries * sizeof(struct wmi_bss_roam_info) >

	    len)

		return -EINVAL;



	if (ar->debug.roam_tbl == NULL ||

	    ar->debug.roam_tbl_len < (unsigned int) len) {

		kfree(ar->debug.roam_tbl);

		ar->debug.roam_tbl = kmalloc(len, GFP_ATOMIC);

		if (ar->debug.roam_tbl == NULL)

			return -ENOMEM;

	}



	memcpy(ar->debug.roam_tbl, buf, len);

	ar->debug.roam_tbl_len = len;



	if (test_bit(ROAM_TBL_PEND, &ar->flag)) {

		clear_bit(ROAM_TBL_PEND, &ar->flag);

		wake_up(&ar->event_wq);

	}



	return 0;

}



static ssize_t ath6kl_roam_table_read(struct file *file, char __user *user_buf,

				      size_t count, loff_t *ppos)

{

	struct ath6kl *ar = file->private_data;

	int ret;

	long left;

	struct wmi_target_roam_tbl *tbl;

	u16 num_entries, i;

	char *buf;

	unsigned int len, buf_len;

	ssize_t ret_cnt;



	if (down_interruptible(&ar->sem))

		return -EBUSY;



	set_bit(ROAM_TBL_PEND, &ar->flag);



	ret = ath6kl_wmi_get_roam_tbl_cmd(ar->wmi);

	if (ret) {

		up(&ar->sem);

		return ret;

	}



	left = wait_event_interruptible_timeout(

		ar->event_wq, !test_bit(ROAM_TBL_PEND, &ar->flag), WMI_TIMEOUT);

	up(&ar->sem);



	if (left <= 0)

		return -ETIMEDOUT;



	if (ar->debug.roam_tbl == NULL)

		return -ENOMEM;



	tbl = (struct wmi_target_roam_tbl *) ar->debug.roam_tbl;

	num_entries = le16_to_cpu(tbl->num_entries);



	buf_len = 100 + num_entries * 100;

	buf = kzalloc(buf_len, GFP_KERNEL);

	if (buf == NULL)

		return -ENOMEM;

	len = 0;

	len += scnprintf(buf + len, buf_len - len,

			 "roam_mode=%u\n\n"

			 "# roam_util bssid rssi rssidt last_rssi util bias\n",

			 le16_to_cpu(tbl->roam_mode));



	for (i = 0; i < num_entries; i++) {

		struct wmi_bss_roam_info *info = &tbl->info[i];

		len += scnprintf(buf + len, buf_len - len,

				 "%d %pM %d %d %d %d %d\n",

				 a_sle32_to_cpu(info->roam_util), info->bssid,

				 info->rssi, info->rssidt, info->last_rssi,

				 info->util, info->bias);

	}



	if (len > buf_len)

		len = buf_len;



	ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);



	kfree(buf);

	return ret_cnt;

}



static const struct file_operations fops_roam_table = {

	.read = ath6kl_roam_table_read,

	.open = ath6kl_debugfs_open,

	.owner = THIS_MODULE,

	.llseek = default_llseek,

};



int ath6kl_debug_init(struct ath6kl *ar)

{

	ar->debug.fwlog_buf.buf = vmalloc(ATH6KL_FWLOG_SIZE);
@@ -1024,6 +1129,9 @@ int ath6kl_debug_init(struct ath6kl *ar) 
	debugfs_create_file("war_stats", S_IRUSR, ar->debugfs_phy, ar,

			    &fops_war_stats);



	debugfs_create_file("roam_table", S_IRUSR, ar->debugfs_phy, ar,

			    &fops_roam_table);



	return 0;

}
@@ -1031,6 +1139,7 @@ void ath6kl_debug_cleanup(struct ath6kl *ar) 
{

	vfree(ar->debug.fwlog_buf.buf);

	kfree(ar->debug.fwlog_tmp);

	kfree(ar->debug.roam_tbl);

}



#endif

drivers/net/wireless/ath/ath6kl/debug.h

+8 −0
Original line number Diff line number Diff line
@@ -90,6 +90,8 @@ void ath6kl_dump_registers(struct ath6kl_device *dev, 
void dump_cred_dist_stats(struct htc_target *target);

void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len);

void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war);

int ath6kl_debug_roam_tbl_event(struct ath6kl *ar, const void *buf,

				size_t len);

int ath6kl_debug_init(struct ath6kl *ar);

void ath6kl_debug_cleanup(struct ath6kl *ar);
@@ -125,6 +127,12 @@ static inline void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war) 
{

}



static inline int ath6kl_debug_roam_tbl_event(struct ath6kl *ar,

					      const void *buf, size_t len)

{

	return 0;

}



static inline int ath6kl_debug_init(struct ath6kl *ar)

{

	return 0;

drivers/net/wireless/ath/ath6kl/wmi.c

+11 −0
Original line number Diff line number Diff line
@@ -2407,6 +2407,11 @@ int ath6kl_wmi_get_tx_pwr_cmd(struct wmi *wmi) 
	return ath6kl_wmi_simple_cmd(wmi, WMI_GET_TX_PWR_CMDID);

}



int ath6kl_wmi_get_roam_tbl_cmd(struct wmi *wmi)

{

	return ath6kl_wmi_simple_cmd(wmi, WMI_GET_ROAM_TBL_CMDID);

}



int ath6kl_wmi_set_lpreamble_cmd(struct wmi *wmi, u8 status, u8 preamble_policy)

{

	struct sk_buff *skb;
@@ -2844,6 +2849,11 @@ static int ath6kl_wmi_control_rx_xtnd(struct wmi *wmi, struct sk_buff *skb) 
	return ret;

}



static int ath6kl_wmi_roam_tbl_event_rx(struct wmi *wmi, u8 *datap, int len)

{

	return ath6kl_debug_roam_tbl_event(wmi->parent_dev, datap, len);

}



/* Control Path */

int ath6kl_wmi_control_rx(struct wmi *wmi, struct sk_buff *skb)

{
@@ -2948,6 +2958,7 @@ int ath6kl_wmi_control_rx(struct wmi *wmi, struct sk_buff *skb) 
		break;

	case WMI_REPORT_ROAM_TBL_EVENTID:

		ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REPORT_ROAM_TBL_EVENTID\n");

		ret = ath6kl_wmi_roam_tbl_event_rx(wmi, datap, len);

		break;

	case WMI_EXTENSION_EVENTID:

		ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_EXTENSION_EVENTID\n");

drivers/net/wireless/ath/ath6kl/wmi.h

+7 −0
Original line number Diff line number Diff line
@@ -1624,6 +1624,12 @@ struct wmi_bss_roam_info { 
	u8 reserved;

} __packed;



struct wmi_target_roam_tbl {

	__le16 roam_mode;

	__le16 num_entries;

	struct wmi_bss_roam_info info[];

} __packed;



/* WMI_CAC_EVENTID */

enum cac_indication {

	CAC_INDICATION_ADMISSION = 0x00,
@@ -2221,6 +2227,7 @@ int ath6kl_wmi_setpmkid_cmd(struct wmi *wmi, const u8 *bssid, 
			    const u8 *pmkid, bool set);

int ath6kl_wmi_set_tx_pwr_cmd(struct wmi *wmi, u8 dbM);

int ath6kl_wmi_get_tx_pwr_cmd(struct wmi *wmi);

int ath6kl_wmi_get_roam_tbl_cmd(struct wmi *wmi);



int ath6kl_wmi_set_wmm_txop(struct wmi *wmi, enum wmi_txop_cfg cfg);

int ath6kl_wmi_set_keepalive_cmd(struct wmi *wmi, u8 keep_alive_intvl);