mac80211/cfg80211: move iwrange handler to cfg80211

The previous patch made cfg80211 generally aware of the signal
type a given hardware will give, so now it can implement
SIOCGIWRANGE itself, removing more wext stuff from mac80211.
Might need to be a little more parametrized once we have
more hardware using cfg80211 and new hardware capabilities.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 58e489fd4ae..b84a9b4fe96 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -137,3 +137,100 @@ int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info,
 	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);