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authorArend van Spriel <arend.vanspriel@broadcom.com>2019-08-02 13:31:00 +0200
committerJohannes Berg <johannes.berg@intel.com>2019-08-21 10:53:31 +0200
commitfa1f1085bc063da5a44f779c9b655b7026c52d68 (patch)
treef1a9194f7fbdff5dd12af3d6846c24988218f640
parentf89769cfdd5a469c9d5791a06a670d424e847477 (diff)
downloadlinux-fa1f1085bc063da5a44f779c9b655b7026c52d68.tar.bz2
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>
-rw-r--r--net/wireless/util.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c
index d0e35b7b9e35..c18d4fc440f4 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