path: root/drivers/net/wireless/marvell/mwifiex/debugfs.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * NXP Wireless LAN device driver: debugfs
 *
 * Copyright 2011-2020 NXP
 */

#include <linux/debugfs.h>

#include "main.h"
#include "11n.h"


static struct dentry *mwifiex_dfs_dir;

static char *bss_modes[] = {
	"UNSPECIFIED",
	"ADHOC",
	"STATION",
	"AP",
	"AP_VLAN",
	"WDS",
	"MONITOR",
	"MESH_POINT",
	"P2P_CLIENT",
	"P2P_GO",
	"P2P_DEVICE",
};

/*
 * Proc info file read handler.
 *
 * This function is called when the 'info' file is opened for reading.
 * It prints the following driver related information -
 *      - Driver name
 *      - Driver version
 *      - Driver extended version
 *      - Interface name
 *      - BSS mode
 *      - Media state (connected or disconnected)
 *      - MAC address
 *      - Total number of Tx bytes
 *      - Total number of Rx bytes
 *      - Total number of Tx packets
 *      - Total number of Rx packets
 *      - Total number of dropped Tx packets
 *      - Total number of dropped Rx packets
 *      - Total number of corrupted Tx packets
 *      - Total number of corrupted Rx packets
 *      - Carrier status (on or off)
 *      - Tx queue status (started or stopped)
 *
 * For STA mode drivers, it also prints the following extra -
 *      - ESSID
 *      - BSSID
 *      - Channel
 *      - Region code
 *      - Multicast count
 *      - Multicast addresses
 */
static ssize_t
mwifiex_info_read(struct file *file, char __user *ubuf,
		  size_t count, loff_t *ppos)
{
	struct mwifiex_private *priv =
		(struct mwifiex_private *) file->private_data;
	struct net_device *netdev = priv->netdev;
	struct netdev_hw_addr *ha;
	struct netdev_queue *txq;
	unsigned long page = get_zeroed_page(GFP_KERNEL);
	char *p = (char *) page, fmt[64];
	struct mwifiex_bss_info info;
	ssize_t ret;
	int i = 0;

	if (!p)
		return -ENOMEM;

	memset(&info, 0, sizeof(info));
	ret = mwifiex_get_bss_info(priv, &info);
	if (ret)
		goto free_and_exit;

	mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1);

	mwifiex_get_ver_ext(priv, 0);

	p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
	p += sprintf(p, "driver_version = %s", fmt);
	p += sprintf(p, "\nverext = %s", priv->version_str);
	p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name);

	if (info.bss_mode >= ARRAY_SIZE(bss_modes))
		p += sprintf(p, "bss_mode=\"%d\"\n", info.bss_mode);
	else
		p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]);

	p += sprintf(p, "media_state=\"%s\"\n",
		     (!priv->media_connected ? "Disconnected" : "Connected"));
	p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr);

	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {
		p += sprintf(p, "multicast_count=\"%d\"\n",
			     netdev_mc_count(netdev));
		p += sprintf(p, "essid=\"%.*s\"\n", info.ssid.ssid_len,
			     info.ssid.ssid);
		p += sprintf(p, "bssid=\"%pM\"\n", info.bssid);
		p += sprintf(p, "channel=\"%d\"\n", (int) info.bss_chan);
		p += sprintf(p, "country_code = \"%s\"\n", info.country_code);
		p += sprintf(p, "region_code=\"0x%x\"\n",
			     priv->adapter->region_code);

		netdev_for_each_mc_addr(ha, netdev)
			p += sprintf(p, "multicast_address[%d]=\"%pM\"\n",
					i++, ha->addr);
	}

	p += sprintf(p, "num_tx_bytes = %lu\n", priv->stats.tx_bytes);
	p += sprintf(p, "num_rx_bytes = %lu\n", priv->stats.rx_bytes);
	p += sprintf(p, "num_tx_pkts = %lu\n", priv->stats.tx_packets);
	p += sprintf(p, "num_rx_pkts = %lu\n", priv->stats.rx_packets);
	p += sprintf(p, "num_tx_pkts_dropped = %lu\n", priv->stats.tx_dropped);
	p += sprintf(p, "num_rx_pkts_dropped = %lu\n", priv->stats.rx_dropped);
	p += sprintf(p, "num_tx_pkts_err = %lu\n", priv->stats.tx_errors);
	p += sprintf(p, "num_rx_pkts_err = %lu\n", priv->stats.rx_errors);
	p += sprintf(p, "carrier %s\n", ((netif_carrier_ok(priv->netdev))
					 ? "on" : "off"));
	p += sprintf(p, "tx queue");
	for (i = 0; i < netdev->num_tx_queues; i++) {
		txq = netdev_get_tx_queue(netdev, i);
		p += sprintf(p, " %d:%s", i, netif_tx_queue_stopped(txq) ?
			     "stopped" : "started");
	}
	p += sprintf(p, "\n");

	ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
				      (unsigned long) p - page);

free_and_exit:
	free_page(page);
	return ret