[PATCH] mac80211: add support for iwlist channel

Add supported channels info in SIOCGIWRANGE implementation.

Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/net/mac80211/ieee80211_ioctl.c b/net/mac80211/ieee80211_ioctl.c
index 66e8a976b311..ef74a91e02a5 100644
--- a/net/mac80211/ieee80211_ioctl.c
+++ b/net/mac80211/ieee80211_ioctl.c
@@ -345,6 +345,8 @@ static int ieee80211_ioctl_giwrange(struct net_device *dev,
 {
         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
         struct iw_range *range = (struct iw_range *) extra;
+        struct ieee80211_hw_mode *mode = NULL;
+        int c = 0;
 
         data->length = sizeof(struct iw_range);
         memset(range, 0, sizeof(struct iw_range));
@@ -378,6 +380,29 @@ static int ieee80211_ioctl_giwrange(struct net_device *dev,
         range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
                           IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
 
+        list_for_each_entry(mode, &local->modes_list, list) {
+                int i = 0;
+
+                if (!(local->enabled_modes & (1 << mode->mode)) ||
+                    (local->hw_modes & local->enabled_modes &
+                     (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
+                        continue;
+
+                while (i < mode->num_channels && c < IW_MAX_FREQUENCIES) {
+                        struct ieee80211_channel *chan = &mode->channels[i];
+
+                        if (chan->flag & IEEE80211_CHAN_W_SCAN) {
+                                range->freq[c].i = chan->chan;
+                                range->freq[c].m = chan->freq * 100000;
+                                range->freq[c].e = 1;
+                                c++;
+                        }
+                        i++;
+                }
+        }
+        range->num_channels = c;
+        range->num_frequency = c;
+
         IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWTHRSPY);
         IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);