/*
   * Copyright (c) 2006	Jiri Benc <jbenc@suse.cz>
   * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #include <linux/kernel.h>
  #include <linux/device.h>
  #include <linux/if.h>

  #include <linux/if_ether.h>

  #include <linux/interrupt.h>
  #include <linux/netdevice.h>
  #include <linux/rtnetlink.h>

  #include <linux/slab.h>

  #include <linux/notifier.h>
  #include <net/mac80211.h>
  #include <net/cfg80211.h>
  #include "ieee80211_i.h"

  #include "rate.h"

  #include "debugfs.h"
  #include "debugfs_netdev.h"

  #include "driver-ops.h"

  
  static ssize_t ieee80211_if_read(
  	struct ieee80211_sub_if_data *sdata,
  	char __user *userbuf,
  	size_t count, loff_t *ppos,
  	ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
  {
  	char buf[70];
  	ssize_t ret = -EINVAL;
  
  	read_lock(&dev_base_lock);

  	if (sdata->dev->reg_state == NETREG_REGISTERED)

  		ret = (*format)(sdata, buf, sizeof(buf));

  	read_unlock(&dev_base_lock);

  	if (ret >= 0)

  		ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);

  	return ret;
  }

  static ssize_t ieee80211_if_write(
  	struct ieee80211_sub_if_data *sdata,
  	const char __user *userbuf,
  	size_t count, loff_t *ppos,
  	ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int))
  {

  	char buf[64];

  	ssize_t ret;

  	if (count >= sizeof(buf))
  		return -E2BIG;

  
  	if (copy_from_user(buf, userbuf, count))

  		return -EFAULT;
  	buf[count] = '\0';

  	ret = -ENODEV;

  	rtnl_lock();
  	if (sdata->dev->reg_state == NETREG_REGISTERED)
  		ret = (*write)(sdata, buf, count);
  	rtnl_unlock();
  
  	return ret;
  }

  #define IEEE80211_IF_FMT(name, field, format_string)			\
  static ssize_t ieee80211_if_fmt_##name(					\
  	const struct ieee80211_sub_if_data *sdata, char *buf,		\
  	int buflen)							\
  {									\
  	return scnprintf(buf, buflen, format_string, sdata->field);	\
  }
  #define IEEE80211_IF_FMT_DEC(name, field)				\
  		IEEE80211_IF_FMT(name, field, "%d
  ")
  #define IEEE80211_IF_FMT_HEX(name, field)				\
  		IEEE80211_IF_FMT(name, field, "%#x
  ")

  #define IEEE80211_IF_FMT_LHEX(name, field)				\
  		IEEE80211_IF_FMT(name, field, "%#lx
  ")

  #define IEEE80211_IF_FMT_SIZE(name, field)				\
  		IEEE80211_IF_FMT(name, field, "%zd
  ")

  #define IEEE80211_IF_FMT_HEXARRAY(name, field)				\
  static ssize_t ieee80211_if_fmt_##name(					\
  	const struct ieee80211_sub_if_data *sdata,			\
  	char *buf, int buflen)						\
  {									\
  	char *p = buf;							\
  	int i;								\
  	for (i = 0; i < sizeof(sdata->field); i++) {			\
  		p += scnprintf(p, buflen + buf - p, "%.2x ",		\
  				 sdata->field[i]);			\
  	}								\
  	p += scnprintf(p, buflen + buf - p, "
  ");			\
  	return p - buf;							\
  }

  #define IEEE80211_IF_FMT_ATOMIC(name, field)				\
  static ssize_t ieee80211_if_fmt_##name(					\
  	const struct ieee80211_sub_if_data *sdata,			\
  	char *buf, int buflen)						\
  {									\
  	return scnprintf(buf, buflen, "%d
  ", atomic_read(&sdata->field));\
  }
  
  #define IEEE80211_IF_FMT_MAC(name, field)				\
  static ssize_t ieee80211_if_fmt_##name(					\
  	const struct ieee80211_sub_if_data *sdata, char *buf,		\
  	int buflen)							\
  {									\

  	return scnprintf(buf, buflen, "%pM
  ", sdata->field);		\

  }

  #define IEEE80211_IF_FMT_DEC_DIV_16(name, field)			\
  static ssize_t ieee80211_if_fmt_##name(					\
  	const struct ieee80211_sub_if_data *sdata,			\
  	char *buf, int buflen)						\
  {									\
  	return scnprintf(buf, buflen, "%d
  ", sdata->field / 16);	\
  }

  #define IEEE80211_IF_FMT_JIFFIES_TO_MS(name, field)			\
  static ssize_t ieee80211_if_fmt_##name(					\
  	const struct ieee80211_sub_if_data *sdata,			\
  	char *buf, int buflen)						\
  {									\
  	return scnprintf(buf, buflen, "%d
  ",				\
  			 jiffies_to_msecs(sdata->field));		\
  }

  #define __IEEE80211_IF_FILE(name, _write)				\

  static ssize_t ieee80211_if_read_##name(struct file *file,		\
  					char __user *userbuf,		\
  					size_t count, loff_t *ppos)	\
  {									\
  	return ieee80211_if_read(file->private_data,			\
  				 userbuf, count, ppos,			\
  				 ieee80211_if_fmt_##name);		\
  }									\
  static const struct file_operations name##_ops = {			\
  	.read = ieee80211_if_read_##name,				\

  	.write = (_write),						\

  	.open = simple_open,						\

  	.llseek = generic_file_llseek,					\

  }

  #define __IEEE80211_IF_FILE_W(name)					\
  static ssize_t ieee80211_if_write_##name(struct file *file,		\
  					 const char __user *userbuf,	\
  					 size_t count, loff_t *ppos)	\
  {									\
  	return ieee80211_if_write(file->private_data, userbuf, count,	\
  				  ppos, ieee80211_if_parse_##name);	\
  }									\
  __IEEE80211_IF_FILE(name, ieee80211_if_write_##name)

  #define IEEE80211_IF_FILE(name, field, format)				\
  		IEEE80211_IF_FMT_##format(name, field)			\

  		__IEEE80211_IF_FILE(name, NULL)

  
  /* common attributes */

  IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);

  IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[IEEE80211_BAND_2GHZ],
  		  HEX);
  IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ],
  		  HEX);

  IEEE80211_IF_FILE(rc_rateidx_mcs_mask_2ghz,
  		  rc_rateidx_mcs_mask[IEEE80211_BAND_2GHZ], HEXARRAY);
  IEEE80211_IF_FILE(rc_rateidx_mcs_mask_5ghz,
  		  rc_rateidx_mcs_mask[IEEE80211_BAND_5GHZ], HEXARRAY);

  IEEE80211_IF_FILE(flags, flags, HEX);
  IEEE80211_IF_FILE(state, state, LHEX);

  IEEE80211_IF_FILE(txpower, vif.bss_conf.txpower, DEC);
  IEEE80211_IF_FILE(ap_power_level, ap_power_level, DEC);
  IEEE80211_IF_FILE(user_power_level, user_power_level, DEC);

  static ssize_t
  ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata,
  			   char *buf, int buflen)
  {
  	int len;
  
  	len = scnprintf(buf, buflen, "AC queues: VO:%d VI:%d BE:%d BK:%d
  ",
  			sdata->vif.hw_queue[IEEE80211_AC_VO],
  			sdata->vif.hw_queue[IEEE80211_AC_VI],
  			sdata->vif.hw_queue[IEEE80211_AC_BE],
  			sdata->vif.hw_queue[IEEE80211_AC_BK]);
  
  	if (sdata->vif.type == NL80211_IFTYPE_AP)
  		len += scnprintf(buf + len, buflen - len, "cab queue: %d
  ",
  				 sdata->vif.cab_queue);
  
  	return len;
  }
  __IEEE80211_IF_FILE(hw_queues, NULL);

  /* STA attributes */

  IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);

  IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);

  IEEE80211_IF_FILE(last_beacon, u.mgd.last_beacon_signal, DEC);
  IEEE80211_IF_FILE(ave_beacon, u.mgd.ave_beacon_signal, DEC_DIV_16);

  IEEE80211_IF_FILE(beacon_timeout, u.mgd.beacon_timeout, JIFFIES_TO_MS);

  static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
  			      enum ieee80211_smps_mode smps_mode)
  {
  	struct ieee80211_local *local = sdata->local;
  	int err;
  
  	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) &&
  	    smps_mode == IEEE80211_SMPS_STATIC)
  		return -EINVAL;
  
  	/* auto should be dynamic if in PS mode */
  	if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) &&
  	    (smps_mode == IEEE80211_SMPS_DYNAMIC ||
  	     smps_mode == IEEE80211_SMPS_AUTOMATIC))
  		return -EINVAL;
  
  	/* supported only on managed interfaces for now */
  	if (sdata->vif.type != NL80211_IFTYPE_STATION)
  		return -EOPNOTSUPP;

  	mutex_lock(&sdata->u.mgd.mtx);

  	err = __ieee80211_request_smps(sdata, smps_mode);

  	mutex_unlock(&sdata->u.mgd.mtx);

  
  	return err;
  }
  
  static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
  	[IEEE80211_SMPS_AUTOMATIC] = "auto",
  	[IEEE80211_SMPS_OFF] = "off",
  	[IEEE80211_SMPS_STATIC] = "static",
  	[IEEE80211_SMPS_DYNAMIC] = "dynamic",
  };
  
  static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata,
  				     char *buf, int buflen)
  {
  	if (sdata->vif.type != NL80211_IFTYPE_STATION)
  		return -EOPNOTSUPP;
  
  	return snprintf(buf, buflen, "request: %s
  used: %s
  ",
  			smps_modes[sdata->u.mgd.req_smps],

  			smps_modes[sdata->smps_mode]);

  }
  
  static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
  				       const char *buf, int buflen)
  {
  	enum ieee80211_smps_mode mode;
  
  	for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) {
  		if (strncmp(buf, smps_modes[mode], buflen) == 0) {
  			int err = ieee80211_set_smps(sdata, mode);
  			if (!err)
  				return buflen;
  			return err;
  		}
  	}
  
  	return -EINVAL;
  }
  
  __IEEE80211_IF_FILE_W(smps);

  static ssize_t ieee80211_if_fmt_tkip_mic_test(
  	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
  {
  	return -EOPNOTSUPP;
  }

  static ssize_t ieee80211_if_parse_tkip_mic_test(
  	struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
  {
  	struct ieee80211_local *local = sdata->local;
  	u8 addr[ETH_ALEN];
  	struct sk_buff *skb;
  	struct ieee80211_hdr *hdr;
  	__le16 fc;

  	if (!mac_pton(buf, addr))

  		return -EINVAL;
  
  	if (!ieee80211_sdata_running(sdata))
  		return -ENOTCONN;
  
  	skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100);
  	if (!skb)
  		return -ENOMEM;
  	skb_reserve(skb, local->hw.extra_tx_headroom);
  
  	hdr = (struct ieee80211_hdr *) skb_put(skb, 24);
  	memset(hdr, 0, 24);
  	fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
  
  	switch (sdata->vif.type) {
  	case NL80211_IFTYPE_AP:
  		fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
  		/* DA BSSID SA */
  		memcpy(hdr->addr1, addr, ETH_ALEN);
  		memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
  		memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN);
  		break;
  	case NL80211_IFTYPE_STATION:
  		fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
  		/* BSSID SA DA */

  		mutex_lock(&sdata->u.mgd.mtx);
  		if (!sdata->u.mgd.associated) {
  			mutex_unlock(&sdata->u.mgd.mtx);

  			dev_kfree_skb(skb);
  			return -ENOTCONN;
  		}

  		memcpy(hdr->addr1, sdata->u.mgd.associated->bssid, ETH_ALEN);

  		memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
  		memcpy(hdr->addr3, addr, ETH_ALEN);

  		mutex_unlock(&sdata->u.mgd.mtx);

  		break;
  	default:
  		dev_kfree_skb(skb);
  		return -EOPNOTSUPP;
  	}
  	hdr->frame_control = fc;
  
  	/*
  	 * Add some length to the test frame to make it look bit more valid.
  	 * The exact contents does not matter since the recipient is required
  	 * to drop this because of the Michael MIC failure.
  	 */
  	memset(skb_put(skb, 50), 0, 50);
  
  	IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE;
  
  	ieee80211_tx_skb(sdata, skb);
  
  	return buflen;
  }
  
  __IEEE80211_IF_FILE_W(tkip_mic_test);

  static ssize_t ieee80211_if_fmt_uapsd_queues(
  	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
  {
  	const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
  
  	return snprintf(buf, buflen, "0x%x
  ", ifmgd->uapsd_queues);
  }
  
  static ssize_t ieee80211_if_parse_uapsd_queues(
  	struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
  {
  	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
  	u8 val;
  	int ret;
  
  	ret = kstrtou8(buf, 0, &val);
  	if (ret)
  		return ret;
  
  	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
  		return -ERANGE;
  
  	ifmgd->uapsd_queues = val;
  
  	return buflen;
  }
  __IEEE80211_IF_FILE_W(uapsd_queues);
  
  static ssize_t ieee80211_if_fmt_uapsd_max_sp_len(
  	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
  {
  	const struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
  
  	return snprintf(buf, buflen, "0x%x
  ", ifmgd->uapsd_max_sp_len);
  }
  
  static ssize_t ieee80211_if_parse_uapsd_max_sp_len(
  	struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
  {
  	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
  	unsigned long val;
  	int ret;
  
  	ret = kstrtoul(buf, 0, &val);
  	if (ret)
  		return -EINVAL;
  
  	if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
  		return -ERANGE;
  
  	ifmgd->uapsd_max_sp_len = val;
  
  	return buflen;
  }
  __IEEE80211_IF_FILE_W(uapsd_max_sp_len);

  /* AP attributes */

  IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC);

  IEEE80211_IF_FILE(num_sta_ps, u.ap.ps.num_sta_ps, ATOMIC);
  IEEE80211_IF_FILE(dtim_count, u.ap.ps.dtim_count, DEC);

  
  static ssize_t ieee80211_if_fmt_num_buffered_multicast(
  	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
  {
  	return scnprintf(buf, buflen, "%u
  ",

  			 skb_queue_len(&sdata->u.ap.ps.bc_buf));

  }

  __IEEE80211_IF_FILE(num_buffered_multicast, NULL);

  /* IBSS attributes */
  static ssize_t ieee80211_if_fmt_tsf(
  	const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
  {
  	struct ieee80211_local *local = sdata->local;
  	u64 tsf;
  
  	tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata);
  
  	return scnprintf(buf, buflen, "0x%016llx
  ", (unsigned long long) tsf);
  }
  
  static ssize_t ieee80211_if_parse_tsf(
  	struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
  {
  	struct ieee80211_local *local = sdata->local;
  	unsigned long long tsf;
  	int ret;

  	int tsf_is_delta = 0;

  
  	if (strncmp(buf, "reset", 5) == 0) {
  		if (local->ops->reset_tsf) {
  			drv_reset_tsf(local, sdata);
  			wiphy_info(local->hw.wiphy, "debugfs reset TSF
  ");
  		}
  	} else {

  		if (buflen > 10 && buf[1] == '=') {
  			if (buf[0] == '+')
  				tsf_is_delta = 1;
  			else if (buf[0] == '-')
  				tsf_is_delta = -1;
  			else
  				return -EINVAL;
  			buf += 2;
  		}

  		ret = kstrtoull(buf, 10, &tsf);
  		if (ret < 0)

  			return ret;

  		if (tsf_is_delta)
  			tsf = drv_get_tsf(local, sdata) + tsf_is_delta * tsf;

  		if (local->ops->set_tsf) {
  			drv_set_tsf(local, sdata, tsf);
  			wiphy_info(local->hw.wiphy,
  				   "debugfs set TSF to %#018llx
  ", tsf);
  		}
  	}
  
  	return buflen;
  }
  __IEEE80211_IF_FILE_W(tsf);

  /* WDS attributes */
  IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);

  #ifdef CONFIG_MAC80211_MESH
  /* Mesh stats attributes */

  IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
  IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);

  IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
  IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);

  IEEE80211_IF_FILE(dropped_frames_congestion,

  		  u.mesh.mshstats.dropped_frames_congestion, DEC);

  IEEE80211_IF_FILE(dropped_frames_no_route,

  		  u.mesh.mshstats.dropped_frames_no_route, DEC);

  IEEE80211_IF_FILE(estab_plinks, u.mesh.estab_plinks, ATOMIC);

  
  /* Mesh parameters */

  IEEE80211_IF_FILE(dot11MeshMaxRetries,

  		  u.mesh.mshcfg.dot11MeshMaxRetries, DEC);

  IEEE80211_IF_FILE(dot11MeshRetryTimeout,

  		  u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);

  IEEE80211_IF_FILE(dot11MeshConfirmTimeout,

  		  u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);

  IEEE80211_IF_FILE(dot11MeshHoldingTimeout,

  		  u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);

  IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);

  IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC);

  IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
  IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,

  		  u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);

  IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,

  		  u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);

  IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,

  		  u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);

  IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval,

  		  u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC);

  IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,

  		  u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);

  IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,

  		  u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);

  IEEE80211_IF_FILE(path_refresh_time,

  		  u.mesh.mshcfg.path_refresh_time, DEC);

  IEEE80211_IF_FILE(min_discovery_timeout,

  		  u.mesh.mshcfg.min_discovery_timeout, DEC);

  IEEE80211_IF_FILE(dot11MeshHWMPRootMode,

  		  u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);

  IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol,

  		  u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC);

  IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,

  		  u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);

  IEEE80211_IF_FILE(dot11MeshForwarding, u.mesh.mshcfg.dot11MeshForwarding, DEC);

  IEEE80211_IF_FILE(rssi_threshold, u.mesh.mshcfg.rssi_threshold, DEC);

  IEEE80211_IF_FILE(ht_opmode, u.mesh.mshcfg.ht_opmode, DEC);

  IEEE80211_IF_FILE(dot11MeshHWMPactivePathToRootTimeout,
  		  u.mesh.mshcfg.dot11MeshHWMPactivePathToRootTimeout, DEC);
  IEEE80211_IF_FILE(dot11MeshHWMProotInterval,
  		  u.mesh.mshcfg.dot11MeshHWMProotInterval, DEC);

  IEEE80211_IF_FILE(dot11MeshHWMPconfirmationInterval,
  		  u.mesh.mshcfg.dot11MeshHWMPconfirmationInterval, DEC);

  IEEE80211_IF_FILE(power_mode, u.mesh.mshcfg.power_mode, DEC);
  IEEE80211_IF_FILE(dot11MeshAwakeWindowDuration,
  		  u.mesh.mshcfg.dot11MeshAwakeWindowDuration, DEC);

  #endif

  #define DEBUGFS_ADD_MODE(name, mode) \

  	debugfs_create_file(#name, mode, sdata->vif.debugfs_dir, \

  			    sdata, &name##_ops);

  #define DEBUGFS_ADD(name) DEBUGFS_ADD_MODE(name, 0400)
  
  static void add_common_files(struct ieee80211_sub_if_data *sdata)

  {

  	DEBUGFS_ADD(drop_unencrypted);
  	DEBUGFS_ADD(rc_rateidx_mask_2ghz);
  	DEBUGFS_ADD(rc_rateidx_mask_5ghz);

  	DEBUGFS_ADD(rc_rateidx_mcs_mask_2ghz);
  	DEBUGFS_ADD(rc_rateidx_mcs_mask_5ghz);

  	DEBUGFS_ADD(hw_queues);

  }

  static void add_sta_files(struct ieee80211_sub_if_data *sdata)
  {

  	DEBUGFS_ADD(bssid);
  	DEBUGFS_ADD(aid);

  	DEBUGFS_ADD(last_beacon);
  	DEBUGFS_ADD(ave_beacon);

  	DEBUGFS_ADD(beacon_timeout);

  	DEBUGFS_ADD_MODE(smps, 0600);

  	DEBUGFS_ADD_MODE(tkip_mic_test, 0200);

  	DEBUGFS_ADD_MODE(uapsd_queues, 0600);
  	DEBUGFS_ADD_MODE(uapsd_max_sp_len, 0600);

  }
  
  static void add_ap_files(struct ieee80211_sub_if_data *sdata)
  {

  	DEBUGFS_ADD(num_mcast_sta);

  	DEBUGFS_ADD(num_sta_ps);
  	DEBUGFS_ADD(dtim_count);
  	DEBUGFS_ADD(num_buffered_multicast);

  	DEBUGFS_ADD_MODE(tkip_mic_test, 0200);

  }

  static void add_ibss_files(struct ieee80211_sub_if_data *sdata)
  {
  	DEBUGFS_ADD_MODE(tsf, 0600);
  }

  static void add_wds_files(struct ieee80211_sub_if_data *sdata)
  {

  	DEBUGFS_ADD(peer);

  }

  #ifdef CONFIG_MAC80211_MESH

  static void add_mesh_files(struct ieee80211_sub_if_data *sdata)
  {
  	DEBUGFS_ADD_MODE(tsf, 0600);
  }

  static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
  {

  	struct dentry *dir = debugfs_create_dir("mesh_stats",

  						sdata->vif.debugfs_dir);

  #define MESHSTATS_ADD(name)\
  	debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);

  	MESHSTATS_ADD(fwded_mcast);
  	MESHSTATS_ADD(fwded_unicast);

  	MESHSTATS_ADD(fwded_frames);
  	MESHSTATS_ADD(dropped_frames_ttl);
  	MESHSTATS_ADD(dropped_frames_no_route);

  	MESHSTATS_ADD(dropped_frames_congestion);

  	MESHSTATS_ADD(estab_plinks);

  #undef MESHSTATS_ADD

  }

  static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
  {

  	struct dentry *dir = debugfs_create_dir("mesh_config",

  						sdata->vif.debugfs_dir);

  
  #define MESHPARAMS_ADD(name) \
  	debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);

  	MESHPARAMS_ADD(dot11MeshMaxRetries);
  	MESHPARAMS_ADD(dot11MeshRetryTimeout);
  	MESHPARAMS_ADD(dot11MeshConfirmTimeout);
  	MESHPARAMS_ADD(dot11MeshHoldingTimeout);
  	MESHPARAMS_ADD(dot11MeshTTL);

  	MESHPARAMS_ADD(element_ttl);

  	MESHPARAMS_ADD(auto_open_plinks);
  	MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
  	MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
  	MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);

  	MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval);

  	MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
  	MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
  	MESHPARAMS_ADD(path_refresh_time);
  	MESHPARAMS_ADD(min_discovery_timeout);

  	MESHPARAMS_ADD(dot11MeshHWMPRootMode);

  	MESHPARAMS_ADD(dot11MeshHWMPRannInterval);

  	MESHPARAMS_ADD(dot11MeshForwarding);

  	MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol);

  	MESHPARAMS_ADD(rssi_threshold);

  	MESHPARAMS_ADD(ht_opmode);

  	MESHPARAMS_ADD(dot11MeshHWMPactivePathToRootTimeout);
  	MESHPARAMS_ADD(dot11MeshHWMProotInterval);

  	MESHPARAMS_ADD(dot11MeshHWMPconfirmationInterval);

  	MESHPARAMS_ADD(power_mode);
  	MESHPARAMS_ADD(dot11MeshAwakeWindowDuration);

  #undef MESHPARAMS_ADD

  }
  #endif

  static void add_files(struct ieee80211_sub_if_data *sdata)
  {

  	if (!sdata->vif.debugfs_dir)

  		return;

  	DEBUGFS_ADD(flags);
  	DEBUGFS_ADD(state);

  	DEBUGFS_ADD(txpower);
  	DEBUGFS_ADD(user_power_level);
  	DEBUGFS_ADD(ap_power_level);

  
  	if (sdata->vif.type != NL80211_IFTYPE_MONITOR)
  		add_common_files(sdata);

  	switch (sdata->vif.type) {

  	case NL80211_IFTYPE_MESH_POINT:

  #ifdef CONFIG_MAC80211_MESH

  		add_mesh_files(sdata);

  		add_mesh_stats(sdata);
  		add_mesh_config(sdata);
  #endif

  		break;

  	case NL80211_IFTYPE_STATION:

  		add_sta_files(sdata);
  		break;

  	case NL80211_IFTYPE_ADHOC:

  		add_ibss_files(sdata);

  		break;

  	case NL80211_IFTYPE_AP:

  		add_ap_files(sdata);
  		break;

  	case NL80211_IFTYPE_WDS:

  		add_wds_files(sdata);
  		break;

  	default:
  		break;
  	}
  }

  void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
  {
  	char buf[10+IFNAMSIZ];

  	sprintf(buf, "netdev:%s", sdata->name);

  	sdata->vif.debugfs_dir = debugfs_create_dir(buf,

  		sdata->local->hw.wiphy->debugfsdir);

  	if (sdata->vif.debugfs_dir)

  		sdata->debugfs.subdir_stations = debugfs_create_dir("stations",

  			sdata->vif.debugfs_dir);

  	add_files(sdata);

  }
  
  void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
  {

  	if (!sdata->vif.debugfs_dir)

  		return;

  	debugfs_remove_recursive(sdata->vif.debugfs_dir);
  	sdata->vif.debugfs_dir = NULL;

  }

  void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)

  {

  	struct dentry *dir;

  	char buf[10 + IFNAMSIZ];

  	dir = sdata->vif.debugfs_dir;

  
  	if (!dir)

  		return;

  	sprintf(buf, "netdev:%s", sdata->name);

  	if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))

  		sdata_err(sdata,
  			  "debugfs: failed to rename debugfs dir to %s
  ",
  			  buf);

  }