xref: /openbmc/linux/net/wireless/wext-compat.c (revision b04b4f78)
1 /*
2  * cfg80211 - wext compat code
3  *
4  * This is temporary code until all wireless functionality is migrated
5  * into cfg80211, when that happens all the exports here go away and
6  * we directly assign the wireless handlers of wireless interfaces.
7  *
8  * Copyright 2008	Johannes Berg <johannes@sipsolutions.net>
9  */
10 
11 #include <linux/wireless.h>
12 #include <linux/nl80211.h>
13 #include <net/iw_handler.h>
14 #include <net/wireless.h>
15 #include <net/cfg80211.h>
16 #include "core.h"
17 
18 int cfg80211_wext_giwname(struct net_device *dev,
19 			  struct iw_request_info *info,
20 			  char *name, char *extra)
21 {
22 	struct wireless_dev *wdev = dev->ieee80211_ptr;
23 	struct ieee80211_supported_band *sband;
24 	bool is_ht = false, is_a = false, is_b = false, is_g = false;
25 
26 	if (!wdev)
27 		return -EOPNOTSUPP;
28 
29 	sband = wdev->wiphy->bands[IEEE80211_BAND_5GHZ];
30 	if (sband) {
31 		is_a = true;
32 		is_ht |= sband->ht_cap.ht_supported;
33 	}
34 
35 	sband = wdev->wiphy->bands[IEEE80211_BAND_2GHZ];
36 	if (sband) {
37 		int i;
38 		/* Check for mandatory rates */
39 		for (i = 0; i < sband->n_bitrates; i++) {
40 			if (sband->bitrates[i].bitrate == 10)
41 				is_b = true;
42 			if (sband->bitrates[i].bitrate == 60)
43 				is_g = true;
44 		}
45 		is_ht |= sband->ht_cap.ht_supported;
46 	}
47 
48 	strcpy(name, "IEEE 802.11");
49 	if (is_a)
50 		strcat(name, "a");
51 	if (is_b)
52 		strcat(name, "b");
53 	if (is_g)
54 		strcat(name, "g");
55 	if (is_ht)
56 		strcat(name, "n");
57 
58 	return 0;
59 }
60 EXPORT_SYMBOL(cfg80211_wext_giwname);
61 
62 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info,
63 			  u32 *mode, char *extra)
64 {
65 	struct wireless_dev *wdev = dev->ieee80211_ptr;
66 	struct cfg80211_registered_device *rdev;
67 	struct vif_params vifparams;
68 	enum nl80211_iftype type;
69 	int ret;
70 
71 	if (!wdev)
72 		return -EOPNOTSUPP;
73 
74 	rdev = wiphy_to_dev(wdev->wiphy);
75 
76 	if (!rdev->ops->change_virtual_intf)
77 		return -EOPNOTSUPP;
78 
79 	/* don't support changing VLANs, you just re-create them */
80 	if (wdev->iftype == NL80211_IFTYPE_AP_VLAN)
81 		return -EOPNOTSUPP;
82 
83 	switch (*mode) {
84 	case IW_MODE_INFRA:
85 		type = NL80211_IFTYPE_STATION;
86 		break;
87 	case IW_MODE_ADHOC:
88 		type = NL80211_IFTYPE_ADHOC;
89 		break;
90 	case IW_MODE_REPEAT:
91 		type = NL80211_IFTYPE_WDS;
92 		break;
93 	case IW_MODE_MONITOR:
94 		type = NL80211_IFTYPE_MONITOR;
95 		break;
96 	default:
97 		return -EINVAL;
98 	}
99 
100 	if (type == wdev->iftype)
101 		return 0;
102 
103 	memset(&vifparams, 0, sizeof(vifparams));
104 
105 	ret = rdev->ops->change_virtual_intf(wdev->wiphy, dev->ifindex, type,
106 					     NULL, &vifparams);
107 	WARN_ON(!ret && wdev->iftype != type);
108 
109 	return ret;
110 }
111 EXPORT_SYMBOL(cfg80211_wext_siwmode);
112 
113 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
114 			  u32 *mode, char *extra)
115 {
116 	struct wireless_dev *wdev = dev->ieee80211_ptr;
117 
118 	if (!wdev)
119 		return -EOPNOTSUPP;
120 
121 	switch (wdev->iftype) {
122 	case NL80211_IFTYPE_AP:
123 		*mode = IW_MODE_MASTER;
124 		break;
125 	case NL80211_IFTYPE_STATION:
126 		*mode = IW_MODE_INFRA;
127 		break;
128 	case NL80211_IFTYPE_ADHOC:
129 		*mode = IW_MODE_ADHOC;
130 		break;
131 	case NL80211_IFTYPE_MONITOR:
132 		*mode = IW_MODE_MONITOR;
133 		break;
134 	case NL80211_IFTYPE_WDS:
135 		*mode = IW_MODE_REPEAT;
136 		break;
137 	case NL80211_IFTYPE_AP_VLAN:
138 		*mode = IW_MODE_SECOND;		/* FIXME */
139 		break;
140 	default:
141 		*mode = IW_MODE_AUTO;
142 		break;
143 	}
144 	return 0;
145 }
146 EXPORT_SYMBOL(cfg80211_wext_giwmode);
147 
148 
149 int cfg80211_wext_giwrange(struct net_device *dev,
150 			   struct iw_request_info *info,
151 			   struct iw_point *data, char *extra)
152 {
153 	struct wireless_dev *wdev = dev->ieee80211_ptr;
154 	struct iw_range *range = (struct iw_range *) extra;
155 	enum ieee80211_band band;
156 	int c = 0;
157 
158 	if (!wdev)
159 		return -EOPNOTSUPP;
160 
161 	data->length = sizeof(struct iw_range);
162 	memset(range, 0, sizeof(struct iw_range));
163 
164 	range->we_version_compiled = WIRELESS_EXT;
165 	range->we_version_source = 21;
166 	range->retry_capa = IW_RETRY_LIMIT;
167 	range->retry_flags = IW_RETRY_LIMIT;
168 	range->min_retry = 0;
169 	range->max_retry = 255;
170 	range->min_rts = 0;
171 	range->max_rts = 2347;
172 	range->min_frag = 256;
173 	range->max_frag = 2346;
174 
175 	range->encoding_size[0] = 5;
176 	range->encoding_size[1] = 13;
177 	range->num_encoding_sizes = 2;
178 	range->max_encoding_tokens = 4;
179 
180 	range->max_qual.updated = IW_QUAL_NOISE_INVALID;
181 
182 	switch (wdev->wiphy->signal_type) {
183 	case CFG80211_SIGNAL_TYPE_NONE:
184 		break;
185 	case CFG80211_SIGNAL_TYPE_MBM:
186 		range->max_qual.level = -110;
187 		range->max_qual.qual = 70;
188 		range->avg_qual.qual = 35;
189 		range->max_qual.updated |= IW_QUAL_DBM;
190 		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
191 		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
192 		break;
193 	case CFG80211_SIGNAL_TYPE_UNSPEC:
194 		range->max_qual.level = 100;
195 		range->max_qual.qual = 100;
196 		range->avg_qual.qual = 50;
197 		range->max_qual.updated |= IW_QUAL_QUAL_UPDATED;
198 		range->max_qual.updated |= IW_QUAL_LEVEL_UPDATED;
199 		break;
200 	}
201 
202 	range->avg_qual.level = range->max_qual.level / 2;
203 	range->avg_qual.noise = range->max_qual.noise / 2;
204 	range->avg_qual.updated = range->max_qual.updated;
205 
206 	range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
207 			  IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
208 
209 
210 	for (band = 0; band < IEEE80211_NUM_BANDS; band ++) {
211 		int i;
212 		struct ieee80211_supported_band *sband;
213 
214 		sband = wdev->wiphy->bands[band];
215 
216 		if (!sband)
217 			continue;
218 
219 		for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) {
220 			struct ieee80211_channel *chan = &sband->channels[i];
221 
222 			if (!(chan->flags & IEEE80211_CHAN_DISABLED)) {
223 				range->freq[c].i =
224 					ieee80211_frequency_to_channel(
225 						chan->center_freq);
226 				range->freq[c].m = chan->center_freq;
227 				range->freq[c].e = 6;
228 				c++;
229 			}
230 		}
231 	}
232 	range->num_channels = c;
233 	range->num_frequency = c;
234 
235 	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
236 	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
237 	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);
238 
239 	range->scan_capa |= IW_SCAN_CAPA_ESSID;
240 
241 	return 0;
242 }
243 EXPORT_SYMBOL(cfg80211_wext_giwrange);
244