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cfg80211: util: add 6GHz channel to freq conversion and vice versa 

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.giesberts@broadcom.com>
Reviewed-by: Leon Zegers <leon.zegers@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://lore.kernel.org/r/1564745465-21234-4-git-send-email-arend.vanspriel@broadcom.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arend van Spriel 2019-08-02 13:31:00 +02:00 committed by Johannes Berg
parent f89769cfdd
commit fa1f1085bc
1 changed files with 9 additions and 1 deletions
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10
net/wireless/util.c
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@ -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