Extend the functions ieee80211_channel_to_frequency() and
ieee80211_frequency_to_channel() to support 6GHz band according
specification in 802.11ax D4.1 27.3.22.2.

Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesbe...@broadcom.com>
Reviewed-by: Leon Zegers <leon.zeg...@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspr...@broadcom.com>
---
 net/wireless/util.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/net/wireless/util.c b/net/wireless/util.c
index 1c39d6a..4e633d4 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -91,6 +91,11 @@ int ieee80211_channel_to_frequency(int chan, enum 
nl80211_band band)
                else
                        return 5000 + chan * 5;
                break;
+       case NL80211_BAND_6GHZ:
+               /* see 802.11ax D4.1 27.3.22.2 */
+               if (chan <= 253)
+                       return 5940 + chan * 5;
+               break;
        case NL80211_BAND_60GHZ:
                if (chan < 7)
                        return 56160 + chan * 2160;
@@ -111,8 +116,11 @@ int ieee80211_frequency_to_channel(int freq)
                return (freq - 2407) / 5;
        else if (freq >= 4910 && freq <= 4980)
                return (freq - 4000) / 5;
-       else if (freq <= 45000) /* DMG band lower limit */
+       else if (freq < 5940)
                return (freq - 5000) / 5;
+       else if (freq <= 45000) /* DMG band lower limit */
+               /* see 802.11ax D4.1 27.3.22.2 */
+               return (freq - 5940) / 5;
        else if (freq >= 58320 && freq <= 70200)
                return (freq - 56160) / 2160;
        else
-- 
1.9.1

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