From a55b736a655c1bf4dffe8ddb985aaa350e22b2dc Mon Sep 17 00:00:00 2001
From: Ricardo Ardissone <ricardo.ardissone@gmail.com>
Date: Mon, 4 May 2020 21:28:56 -0300
Subject: [PATCH] nixos/hostapd: conditionally enable ieee80211d

---
 nixos/modules/services/networking/hostapd.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/networking/hostapd.nix b/nixos/modules/services/networking/hostapd.nix
index c11f5bab3d5c..87e07509fefa 100644
--- a/nixos/modules/services/networking/hostapd.nix
+++ b/nixos/modules/services/networking/hostapd.nix
@@ -21,6 +21,7 @@ let
     hw_mode=${cfg.hwMode}
     channel=${toString cfg.channel}
     ${optionalString (cfg.countryCode != null) ''country_code=${cfg.countryCode}''}
+    ${optionalString (cfg.countryCode != null) ''ieee80211d=1''}
 
     # logging (debug level)
     logger_syslog=-1
@@ -167,7 +168,10 @@ in
           Set as needed to indicate country in which device is operating.
           This can limit available channels and transmit power.
           These two octets are used as the first two octets of the Country String
-          (dot11CountryString)
+          (dot11CountryString).
+          If set this enables IEEE 802.11d. This advertises the countryCode and
+          the set of allowed channels and transmit power levels based on the
+          regulatory limits.
         '';
       };