From 9c0be26f1a29eaec7fa8b65742edb73862481891 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joan=20Bruguera=20Mic=C3=B3?= <joanbrugueram@gmail.com>
Date: Sat, 23 Dec 2023 21:35:36 +0000
Subject: [PATCH] Update `ieee80211_frequency_to_channel` from iw

Make sure the definition of `ieee80211_frequency_to_channel` matches
with the latest changes from iw. Probably not very useful since all
changes seem related to 6GHz / 60GHz / 802.11ah support, which as far
as I can tell create_ap does not yet support.

See also: https://git.kernel.org/pub/scm/linux/kernel/git/jberg/iw.git/commit/?id=43789196906376cc108ed06b4a3175d767586cd3
          https://git.kernel.org/pub/scm/linux/kernel/git/jberg/iw.git/commit/?id=b12fc8a84480d25ea791f0dff8cb92d69098c91c
          https://git.kernel.org/pub/scm/linux/kernel/git/jberg/iw.git/commit/?id=f2d9f5b52677f5414dc194be94b5916d2b080eab
---
 src/scripts/create_ap | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/scripts/create_ap b/src/scripts/create_ap
index 20efc7b..d9d8fd6 100755
--- a/src/scripts/create_ap
+++ b/src/scripts/create_ap
@@ -342,15 +342,21 @@ ieee80211_frequency_to_channel() {
     local FREQ_MAYBE_FRACTIONAL=$1
     local FREQ=${FREQ_MAYBE_FRACTIONAL%.*}
 
-    if [[ $FREQ -eq 2484 ]]; then
+    if [[ $FREQ -lt 1000 ]]; then
+        echo 0
+    elif [[ $FREQ -eq 2484 ]]; then
         echo 14
+    elif [[ $FREQ -eq 5935 ]]; then
+        echo 2
     elif [[ $FREQ -lt 2484 ]]; then
         echo $(( ($FREQ - 2407) / 5 ))
     elif [[ $FREQ -ge 4910 && $FREQ -le 4980 ]]; then
         echo $(( ($FREQ - 4000) / 5 ))
-    elif [[ $FREQ -le 45000 ]]; then
+    elif [[ $FREQ -lt 5950 ]]; then
         echo $(( ($FREQ - 5000) / 5 ))
-    elif [[ $FREQ -ge 58320 && $FREQ -le 64800 ]]; then
+    elif [[ $FREQ -le 45000 ]]; then
+        echo $(( ($FREQ - 5950) / 5 ))
+    elif [[ $FREQ -ge 58320 && $FREQ -le 70200 ]]; then
         echo $(( ($FREQ - 56160) / 2160 ))
     else
         echo 0