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-rw-r--r--net/wireless/util.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c
index b9d15f3693..2bde8a3546 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -2079,6 +2079,82 @@ bool ieee80211_operating_class_to_band(u8 operating_class,
}
EXPORT_SYMBOL(ieee80211_operating_class_to_band);
+bool ieee80211_operating_class_to_chandef(u8 operating_class,
+ struct ieee80211_channel *chan,
+ struct cfg80211_chan_def *chandef)
+{
+ u32 control_freq, offset = 0;
+ enum nl80211_band band;
+
+ if (!ieee80211_operating_class_to_band(operating_class, &band) ||
+ !chan || band != chan->band)
+ return false;
+
+ control_freq = chan->center_freq;
+ chandef->chan = chan;
+
+ if (control_freq >= 5955)
+ offset = control_freq - 5955;
+ else if (control_freq >= 5745)
+ offset = control_freq - 5745;
+ else if (control_freq >= 5180)
+ offset = control_freq - 5180;
+ offset /= 20;
+
+ switch (operating_class) {
+ case 81: /* 2 GHz band; 20 MHz; channels 1..13 */
+ case 82: /* 2 GHz band; 20 MHz; channel 14 */
+ case 115: /* 5 GHz band; 20 MHz; channels 36,40,44,48 */
+ case 118: /* 5 GHz band; 20 MHz; channels 52,56,60,64 */
+ case 121: /* 5 GHz band; 20 MHz; channels 100..144 */
+ case 124: /* 5 GHz band; 20 MHz; channels 149,153,157,161 */
+ case 125: /* 5 GHz band; 20 MHz; channels 149..177 */
+ case 131: /* 6 GHz band; 20 MHz; channels 1..233*/
+ case 136: /* 6 GHz band; 20 MHz; channel 2 */
+ chandef->center_freq1 = control_freq;
+ chandef->width = NL80211_CHAN_WIDTH_20;
+ return true;
+ case 83: /* 2 GHz band; 40 MHz; channels 1..9 */
+ case 116: /* 5 GHz band; 40 MHz; channels 36,44 */
+ case 119: /* 5 GHz band; 40 MHz; channels 52,60 */
+ case 122: /* 5 GHz band; 40 MHz; channels 100,108,116,124,132,140 */
+ case 126: /* 5 GHz band; 40 MHz; channels 149,157,165,173 */
+ chandef->center_freq1 = control_freq + 10;
+ chandef->width = NL80211_CHAN_WIDTH_40;
+ return true;
+ case 84: /* 2 GHz band; 40 MHz; channels 5..13 */
+ case 117: /* 5 GHz band; 40 MHz; channels 40,48 */
+ case 120: /* 5 GHz band; 40 MHz; channels 56,64 */
+ case 123: /* 5 GHz band; 40 MHz; channels 104,112,120,128,136,144 */
+ case 127: /* 5 GHz band; 40 MHz; channels 153,161,169,177 */
+ chandef->center_freq1 = control_freq - 10;
+ chandef->width = NL80211_CHAN_WIDTH_40;
+ return true;
+ case 132: /* 6 GHz band; 40 MHz; channels 1,5,..,229*/
+ chandef->center_freq1 = control_freq + 10 - (offset & 1) * 20;
+ chandef->width = NL80211_CHAN_WIDTH_40;
+ return true;
+ case 128: /* 5 GHz band; 80 MHz; channels 36..64,100..144,149..177 */
+ case 133: /* 6 GHz band; 80 MHz; channels 1,5,..,229 */
+ chandef->center_freq1 = control_freq + 30 - (offset & 3) * 20;
+ chandef->width = NL80211_CHAN_WIDTH_80;
+ return true;
+ case 129: /* 5 GHz band; 160 MHz; channels 36..64,100..144,149..177 */
+ case 134: /* 6 GHz band; 160 MHz; channels 1,5,..,229 */
+ chandef->center_freq1 = control_freq + 70 - (offset & 7) * 20;
+ chandef->width = NL80211_CHAN_WIDTH_160;
+ return true;
+ case 130: /* 5 GHz band; 80+80 MHz; channels 36..64,100..144,149..177 */
+ case 135: /* 6 GHz band; 80+80 MHz; channels 1,5,..,229 */
+ /* The center_freq2 of 80+80 MHz is unknown */
+ case 137: /* 6 GHz band; 320 MHz; channels 1,5,..,229 */
+ /* 320-1 or 320-2 channelization is unknown */
+ default:
+ return false;
+ }
+}
+EXPORT_SYMBOL(ieee80211_operating_class_to_chandef);
+
bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef,
u8 *op_class)
{