libs/iwinfo: add *_get_freqlist()

[project/luci.git] / libs / iwinfo / src / iwinfo_madwifi.c

diff --git a/libs/iwinfo/src/iwinfo_madwifi.c b/libs/iwinfo/src/iwinfo_madwifi.c
index 1fe777f..99c02dc 100644 (file)
--- a/libs/iwinfo/src/iwinfo_madwifi.c
+++ b/libs/iwinfo/src/iwinfo_madwifi.c
@@ -494,6 +494,32 @@ int madwifi_get_scanlist(const char *ifname, char *buf, int *len)
        return ret;
 }
 
+int madwifi_get_freqlist(const char *ifname, char *buf, int *len)
+{
+       int i, bl;
+       struct ieee80211req_chaninfo chans;
+       struct iwinfo_freqlist_entry entry;
+
+       if( get80211priv(ifname, IEEE80211_IOCTL_GETCHANINFO, &chans, sizeof(chans)) >= 0 )
+       {
+               bl = 0;
+
+               for( i = 0; i < chans.ic_nchans; i++ )
+               {
+                       entry.mhz     = (int)(chans.ic_chans[i].ic_freq / 1000);
+                       entry.channel = chans.ic_chans[i].ic_ieee;
+
+                       memcpy(&buf[bl], &entry, sizeof(struct iwinfo_freqlist_entry));
+                       bl += sizeof(struct iwinfo_freqlist_entry);
+               }
+
+               *len = bl;
+               return 0;
+       }
+
+       return -1;
+}
+
 int madwifi_get_mbssid_support(const char *ifname, int *buf)
 {
        /* We assume that multi bssid is always possible */