net/wireless/wext-compat.c - SHIFTPHONES/mainline/linux - Gitiles

 /*
  * cfg80211 - wext compat code
  *
  * This is temporary code until all wireless functionality is migrated
  * into cfg80211, when that happens all the exports here go away and
  * we directly assign the wireless handlers of wireless interfaces.
  *
  * Copyright 2008	Johannes Berg <johannes@sipsolutions.net>
  */

 #include <linux/wireless.h>
 #include <linux/nl80211.h>
 #include <linux/if_arp.h>
 #include <net/iw_handler.h>
 #include <net/cfg80211.h>
 #include "core.h"

 int cfg80211_wext_giwname(struct net_device *dev,
 			  struct iw_request_info *info,
 			  char *name, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct ieee80211_supported_band *sband;
 	bool is_ht = false, is_a = false, is_b = false, is_g = false;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
 	if (sband) {
 		is_a = true;
 		is_ht |= sband->ht_cap.ht_supported;
 	}

 	sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
 	if (sband) {
 		int i;
 		/* Check for mandatory rates */
 		for (i = 0; i < sband->n_bitrates; i++) {
 			if (sband->bitrates[i].bitrate == 10)
 				is_b = true;
 			if (sband->bitrates[i].bitrate == 60)
 				is_g = true;
 		}
 		is_ht |= sband->ht_cap.ht_supported;
 	}

 	strcpy(name, "IEEE 802.11");
 	if (is_a)
 		strcat(name, "a");
 	if (is_b)
 		strcat(name, "b");
 	if (is_g)
 		strcat(name, "g");
 	if (is_ht)
 		strcat(name, "n");

 	return 0;
 }
 EXPORT_SYMBOL(cfg80211_wext_giwname);

 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
 			  u32 *mode, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct cfg80211_registered_device *rdev;
 	struct vif_params vifparams;
 	enum nl80211_iftype type;
 	int ret;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	rdev = wiphy_to_dev(wdev->wiphy);

 	if (!rdev->ops->change_virtual_intf)
 		return -EOPNOTSUPP;

 	/* don't support changing VLANs, you just re-create them */
 	if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
 		return -EOPNOTSUPP;

 	switch (*mode) {
 	case IW_MODE_INFRA:
 		type = NL80211_IFTYPE_STATION;
 		break;
 	case IW_MODE_ADHOC:
 		type = NL80211_IFTYPE_ADHOC;
 		break;
 	case IW_MODE_REPEAT:
 		type = NL80211_IFTYPE_WDS;
 		break;
 	case IW_MODE_MONITOR:
 		type = NL80211_IFTYPE_MONITOR;
 		break;
 	default:
 		return -EINVAL;
 	}

 	if (type == wdev->iftype)
 		return 0;

 	memset(&vifparams, 0, sizeof(vifparams));

 	ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev->ifindex, type,
 					     NULL, &vifparams);
 	WARN_ON(!ret && wdev->iftype != type);

 	return ret;
 }
 EXPORT_SYMBOL(cfg80211_wext_siwmode);

 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
 			  u32 *mode, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	switch (wdev->iftype) {
 	case NL80211_IFTYPE_AP:
 		*mode = IW_MODE_MASTER;
 		break;
 	case NL80211_IFTYPE_STATION:
 		*mode = IW_MODE_INFRA;
 		break;
 	case NL80211_IFTYPE_ADHOC:
 		*mode = IW_MODE_ADHOC;
 		break;
 	case NL80211_IFTYPE_MONITOR:
 		*mode = IW_MODE_MONITOR;
 		break;
 	case NL80211_IFTYPE_WDS:
 		*mode = IW_MODE_REPEAT;
 		break;
 	case NL80211_IFTYPE_AP_VLAN:
 		*mode = IW_MODE_SECOND;		/* FIXME */
 		break;
 	default:
 		*mode = IW_MODE_AUTO;
 		break;
 	}
 	return 0;
 }
 EXPORT_SYMBOL(cfg80211_wext_giwmode);


 int cfg80211_wext_giwrange(struct net_device *dev,
 			   struct iw_request_info *info,
 			   struct iw_point *data, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct iw_range *range = (struct iw_range *) extra;
 	enum ieee80211_band band;
 	int c = 0;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	data->length = sizeof(struct iw_range);
 	memset(range, 0, sizeof(struct iw_range));

 	range->we_version_compiled = WIRELESS_EXT;
 	range->we_version_source = 21;
 	range->retry_capa = IW_RETRY_LIMIT;
 	range->retry_flags = IW_RETRY_LIMIT;
 	range->min_retry = 0;
 	range->max_retry = 255;
 	range->min_rts = 0;
 	range->max_rts = 2347;
 	range->min_frag = 256;
 	range->max_frag = 2346;

 	range->encoding_size[0] = 5;
 	range->encoding_size[1] = 13;
 	range->num_encoding_sizes = 2;
 	range->max_encoding_tokens = 4;

 	range->max_qual.updated = IW_QUAL_NOISE_INVALID;

 	switch (wdev->wiphy->signal_type) {
 	case CFG80211_SIGNAL_TYPE_NONE:
 		break;
 	case CFG80211_SIGNAL_TYPE_MBM:
 		range->max_qual.level = -110;
 		range->max_qual.qual = 70;
 		range->avg_qual.qual = 35;
 		range->max_qual.updated |= IW_QUAL_DBM;
 		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 		break;
 	case CFG80211_SIGNAL_TYPE_UNSPEC:
 		range->max_qual.level = 100;
 		range->max_qual.qual = 100;
 		range->avg_qual.qual = 50;
 		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
 		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
 		break;
 	}

 	range->avg_qual.level = range->max_qual.level / 2;
 	range->avg_qual.noise = range->max_qual.noise / 2;
 	range->avg_qual.updated = range->max_qual.updated;

 	range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
 			  IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;

 	for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
 		int i;
 		struct ieee80211_supported_band *sband;

 		sband = wdev->wiphy->bands[band];

 		if (!sband)
 			continue;

 		for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
 			struct ieee80211_channel *chan = &sband->channels[i];

 			if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
 				range->freq[c].i =
 					ieee80211_frequency_to_channel(
 						chan->center_freq);
 				range->freq[c].m = chan->center_freq;
 				range->freq[c].e = 6;
 				c++;
 			}
 		}
 	}
 	range->num_channels = c;
 	range->num_frequency = c;

 	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
 	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
 	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);

 	range->scan_capa |= IW_SCAN_CAPA_ESSID;

 	return 0;
 }
 EXPORT_SYMBOL(cfg80211_wext_giwrange);

 int cfg80211_wext_siwmlme(struct net_device *dev,
 			  struct iw_request_info *info,
 			  struct iw_point *data, char *extra)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
 	struct iw_mlme *mlme = (struct iw_mlme *)extra;
 	struct cfg80211_registered_device *rdev;
 	union {
 		struct cfg80211_disassoc_request disassoc;
 		struct cfg80211_deauth_request deauth;
 	} cmd;

 	if (!wdev)
 		return -EOPNOTSUPP;

 	rdev = wiphy_to_dev(wdev->wiphy);

 	if (wdev->iftype != NL80211_IFTYPE_STATION)
 		return -EINVAL;

 	if (mlme->addr.sa_family != ARPHRD_ETHER)
 		return -EINVAL;

 	memset(&cmd, 0, sizeof(cmd));

 	switch (mlme->cmd) {
 	case IW_MLME_DEAUTH:
 		if (!rdev->ops->deauth)
 			return -EOPNOTSUPP;
 		cmd.deauth.peer_addr = mlme->addr.sa_data;
 		cmd.deauth.reason_code = mlme->reason_code;
 		return rdev->ops->deauth(wdev->wiphy, dev, &cmd.deauth);
 	case IW_MLME_DISASSOC:
 		if (!rdev->ops->disassoc)
 			return -EOPNOTSUPP;
 		cmd.disassoc.peer_addr = mlme->addr.sa_data;
 		cmd.disassoc.reason_code = mlme->reason_code;
 		return rdev->ops->disassoc(wdev->wiphy, dev, &cmd.disassoc);
 	default:
 		return -EOPNOTSUPP;
 	}
 }
 EXPORT_SYMBOL(cfg80211_wext_siwmlme);


 /**
  * cfg80211_wext_freq - get wext frequency for non-"auto"
  * @wiphy: the wiphy
  * @freq: the wext freq encoding
  *
  * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
  */
 struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
 					     struct iw_freq *freq)
 {
 	if (freq->e == 0) {
 		if (freq->m < 0)
 			return NULL;
 		else
 			return ieee80211_get_channel(wiphy,
 				ieee80211_channel_to_frequency(freq->m));
 	} else {
 		int i, div = 1000000;
 		for (i = 0; i < freq->e; i++)
 			div /= 10;
 		if (div > 0)
 			return ieee80211_get_channel(wiphy, freq->m / div);
 		else
 			return ERR_PTR(-EINVAL);
 	}

 }
 EXPORT_SYMBOL(cfg80211_wext_freq);
	/*
	* cfg80211 - wext compat code
	*
	* This is temporary code until all wireless functionality is migrated
	* into cfg80211, when that happens all the exports here go away and
	* we directly assign the wireless handlers of wireless interfaces.
	*
	* Copyright 2008 Johannes Berg <johannes@sipsolutions.net>
	*/

	#include <linux/wireless.h>
	#include <linux/nl80211.h>
	#include <linux/if_arp.h>
	#include <net/iw_handler.h>
	#include <net/cfg80211.h>
	#include "core.h"

	int cfg80211_wext_giwname(struct net_device *dev,
	struct iw_request_info *info,
	char name, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct ieee80211_supported_band *sband;
	bool is_ht = false, is_a = false, is_b = false, is_g = false;

	if (!wdev)
	return -EOPNOTSUPP;

	sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
	if (sband) {
	is_a = true;
	is_ht \|= sband->ht_cap.ht_supported;
	}

	sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
	if (sband) {
	int i;
	/* Check for mandatory rates */
	for (i = 0; i < sband->n_bitrates; i++) {
	if (sband->bitrates[i].bitrate == 10)
	is_b = true;
	if (sband->bitrates[i].bitrate == 60)
	is_g = true;
	}
	is_ht \|= sband->ht_cap.ht_supported;
	}

	strcpy(name, "IEEE 802.11");
	if (is_a)
	strcat(name, "a");
	if (is_b)
	strcat(name, "b");
	if (is_g)
	strcat(name, "g");
	if (is_ht)
	strcat(name, "n");

	return 0;
	}
	EXPORT_SYMBOL(cfg80211_wext_giwname);

	int cfg80211_wext_siwmode(struct net_device dev, struct iw_request_info info,
	u32 mode, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev;
	struct vif_params vifparams;
	enum nl80211_iftype type;
	int ret;

	if (!wdev)
	return -EOPNOTSUPP;

	rdev = wiphy_to_dev(wdev->wiphy);

	if (!rdev->ops->change_virtual_intf)
	return -EOPNOTSUPP;

	/* don't support changing VLANs, you just re-create them */
	if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
	return -EOPNOTSUPP;

	switch (*mode) {
	case IW_MODE_INFRA:
	type = NL80211_IFTYPE_STATION;
	break;
	case IW_MODE_ADHOC:
	type = NL80211_IFTYPE_ADHOC;
	break;
	case IW_MODE_REPEAT:
	type = NL80211_IFTYPE_WDS;
	break;
	case IW_MODE_MONITOR:
	type = NL80211_IFTYPE_MONITOR;
	break;
	default:
	return -EINVAL;
	}

	if (type == wdev->iftype)
	return 0;

	memset(&vifparams, 0, sizeof(vifparams));

	ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev->ifindex, type,
	NULL, &vifparams);
	WARN_ON(!ret && wdev->iftype != type);

	return ret;
	}
	EXPORT_SYMBOL(cfg80211_wext_siwmode);

	int cfg80211_wext_giwmode(struct net_device dev, struct iw_request_info info,
	u32 mode, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;

	if (!wdev)
	return -EOPNOTSUPP;

	switch (wdev->iftype) {
	case NL80211_IFTYPE_AP:
	*mode = IW_MODE_MASTER;
	break;
	case NL80211_IFTYPE_STATION:
	*mode = IW_MODE_INFRA;
	break;
	case NL80211_IFTYPE_ADHOC:
	*mode = IW_MODE_ADHOC;
	break;
	case NL80211_IFTYPE_MONITOR:
	*mode = IW_MODE_MONITOR;
	break;
	case NL80211_IFTYPE_WDS:
	*mode = IW_MODE_REPEAT;
	break;
	case NL80211_IFTYPE_AP_VLAN:
	mode = IW_MODE_SECOND; / FIXME */
	break;
	default:
	*mode = IW_MODE_AUTO;
	break;
	}
	return 0;
	}
	EXPORT_SYMBOL(cfg80211_wext_giwmode);


	int cfg80211_wext_giwrange(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_point data, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct iw_range range = (struct iw_range ) extra;
	enum ieee80211_band band;
	int c = 0;

	if (!wdev)
	return -EOPNOTSUPP;

	data->length = sizeof(struct iw_range);
	memset(range, 0, sizeof(struct iw_range));

	range->we_version_compiled = WIRELESS_EXT;
	range->we_version_source = 21;
	range->retry_capa = IW_RETRY_LIMIT;
	range->retry_flags = IW_RETRY_LIMIT;
	range->min_retry = 0;
	range->max_retry = 255;
	range->min_rts = 0;
	range->max_rts = 2347;
	range->min_frag = 256;
	range->max_frag = 2346;

	range->encoding_size[0] = 5;
	range->encoding_size[1] = 13;
	range->num_encoding_sizes = 2;
	range->max_encoding_tokens = 4;

	range->max_qual.updated = IW_QUAL_NOISE_INVALID;

	switch (wdev->wiphy->signal_type) {
	case CFG80211_SIGNAL_TYPE_NONE:
	break;
	case CFG80211_SIGNAL_TYPE_MBM:
	range->max_qual.level = -110;
	range->max_qual.qual = 70;
	range->avg_qual.qual = 35;
	range->max_qual.updated \|= IW_QUAL_DBM;
	range->max_qual.updated \|= IW_QUAL_QUAL_UPDATED;
	range->max_qual.updated \|= IW_QUAL_LEVEL_UPDATED;
	break;
	case CFG80211_SIGNAL_TYPE_UNSPEC:
	range->max_qual.level = 100;
	range->max_qual.qual = 100;
	range->avg_qual.qual = 50;
	range->max_qual.updated \|= IW_QUAL_QUAL_UPDATED;
	range->max_qual.updated \|= IW_QUAL_LEVEL_UPDATED;
	break;
	}

	range->avg_qual.level = range->max_qual.level / 2;
	range->avg_qual.noise = range->max_qual.noise / 2;
	range->avg_qual.updated = range->max_qual.updated;

	range->enc_capa = IW_ENC_CAPA_WPA \| IW_ENC_CAPA_WPA2 \|
	IW_ENC_CAPA_CIPHER_TKIP \| IW_ENC_CAPA_CIPHER_CCMP;

	for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
	int i;
	struct ieee80211_supported_band *sband;

	sband = wdev->wiphy->bands[band];

	if (!sband)
	continue;

	for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
	struct ieee80211_channel *chan = &sband->channels[i];

	if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
	range->freq[c].i =
	ieee80211_frequency_to_channel(
	chan->center_freq);
	range->freq[c].m = chan->center_freq;
	range->freq[c].e = 6;
	c++;
	}
	}
	}
	range->num_channels = c;
	range->num_frequency = c;

	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);

	range->scan_capa \|= IW_SCAN_CAPA_ESSID;

	return 0;
	}
	EXPORT_SYMBOL(cfg80211_wext_giwrange);

	int cfg80211_wext_siwmlme(struct net_device *dev,
	struct iw_request_info *info,
	struct iw_point data, char extra)
	{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct iw_mlme mlme = (struct iw_mlme )extra;
	struct cfg80211_registered_device *rdev;
	union {
	struct cfg80211_disassoc_request disassoc;
	struct cfg80211_deauth_request deauth;
	} cmd;

	if (!wdev)
	return -EOPNOTSUPP;

	rdev = wiphy_to_dev(wdev->wiphy);

	if (wdev->iftype != NL80211_IFTYPE_STATION)
	return -EINVAL;

	if (mlme->addr.sa_family != ARPHRD_ETHER)
	return -EINVAL;

	memset(&cmd, 0, sizeof(cmd));

	switch (mlme->cmd) {
	case IW_MLME_DEAUTH:
	if (!rdev->ops->deauth)
	return -EOPNOTSUPP;
	cmd.deauth.peer_addr = mlme->addr.sa_data;
	cmd.deauth.reason_code = mlme->reason_code;
	return rdev->ops->deauth(wdev->wiphy, dev, &cmd.deauth);
	case IW_MLME_DISASSOC:
	if (!rdev->ops->disassoc)
	return -EOPNOTSUPP;
	cmd.disassoc.peer_addr = mlme->addr.sa_data;
	cmd.disassoc.reason_code = mlme->reason_code;
	return rdev->ops->disassoc(wdev->wiphy, dev, &cmd.disassoc);
	default:
	return -EOPNOTSUPP;
	}
	}
	EXPORT_SYMBOL(cfg80211_wext_siwmlme);


	/**
	* cfg80211_wext_freq - get wext frequency for non-"auto"
	* @wiphy: the wiphy
	* @freq: the wext freq encoding
	*
	* Returns a channel, %NULL for auto, or an ERR_PTR for errors!
	*/
	struct ieee80211_channel cfg80211_wext_freq(struct wiphy wiphy,
	struct iw_freq *freq)
	{
	if (freq->e == 0) {
	if (freq->m < 0)
	return NULL;
	else
	return ieee80211_get_channel(wiphy,
	ieee80211_channel_to_frequency(freq->m));
	} else {
	int i, div = 1000000;
	for (i = 0; i < freq->e; i++)
	div /= 10;
	if (div > 0)
	return ieee80211_get_channel(wiphy, freq->m / div);
	else
	return ERR_PTR(-EINVAL);
	}

	}
	EXPORT_SYMBOL(cfg80211_wext_freq);