[PATCH v2] hostapd: enable background scanning in wpa_supplicant_full

[Andre Valentin]

Hello!

Could someone please take care of this little snippet?

Kind regards,

André
Am 09.09.20 um 22:00 schrieb André Valentin:
> Activation of autoscanning enables a a wifi client to select the best
> accesspoint based on rssi.
> 
> This feature is useful in case you have multiple access points in your range
> and you do not want to stick the client on the first one it connected to.
> Especially when used with 802.11r this allows seamless transition to the
> optimal accesspoints.
> 
> Setting the config value bgscan to -65 will tell wpa_supplicant to try to
> connect to an access points with better rssi.
> 
> Example config:
> config wifi-iface 'default_radio1'
> 	option device 'radio1'
> 	option mode 'sta'
> 	option ssid 'openwrt'
> 	option encryption 'psk2'
> 	option key 'mykey'
> 	option network 'wlan'
> 	option roam_rssi_threshold '-65'
> 
> The ipk sizes for mipsel_24kc change like this:
> old:
> wpad-openssl_2020-06-08-5a8b3662-4_mipsel_24kc.ipk 550133
> 
> new:
> wpad-openssl_2020-06-08-5a8b3662-5_mipsel_24kc.ipk 551961
> 
> Signed-off-by: André Valentin <avalentin at marcant.net>
> ---
>  package/network/services/hostapd/files/hostapd.sh          		| 7 +++++++
>  package/network/services/hostapd/files/wpa_supplicant-full.config      | 6 +++---
>  package/network/services/hostapd/Makefile				| 1 +-
>  3 files changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/package/network/services/hostapd/files/hostapd.sh b/package/network/services/hostapd/files/hostapd.sh
> index 88113cd7ce..85299234c2 100644
> --- a/package/network/services/hostapd/files/hostapd.sh
> +++ b/package/network/services/hostapd/files/hostapd.sh
> @@ -272,6 +272,8 @@ hostapd_common_add_bss_config() {
>  	config_add_array operator_icon
>  	config_add_array hs20_conn_capab
>  	config_add_string osu_ssid hs20_wan_metrics hs20_operating_class hs20_t_c_filename hs20_t_c_timestamp
> +
> +	config_add_string roam_rssi_threshold
>  }
>  
>  hostapd_set_vlan_file() {
> @@ -1178,6 +1180,11 @@ wpa_supplicant_add_network() {
>  	[ -n "$bssid_blacklist" ] && append network_data "bssid_blacklist=$bssid_blacklist" "$N$T"
>  	[ -n "$bssid_whitelist" ] && append network_data "bssid_whitelist=$bssid_whitelist" "$N$T"
>  
> +	[ -n "$roam_rssi_threshold" ] && {
> +		json_get_vars roam_rssi_threshold
> +		append network_data "bgscan=\"simple:120:${roam_rssi_threshold}:600\"" "$N$T"
> +	}
> +
>  	[ -n "$basic_rate" ] && {
>  		local br rate_list=
>  		for br in $basic_rate; do
> diff --git a/package/network/services/hostapd/files/wpa_supplicant-full.config b/package/network/services/hostapd/files/wpa_supplicant-full.config
> index 982f4d5534..d39ee74a8d 100644
> --- a/package/network/services/hostapd/files/wpa_supplicant-full.config
> +++ b/package/network/services/hostapd/files/wpa_supplicant-full.config
> @@ -527,9 +527,9 @@ CONFIG_WNM=y
>  #
>  # Enabling directly a module will enable autoscan support.
>  # For exponential module:
> -#CONFIG_AUTOSCAN_EXPONENTIAL=y
> +CONFIG_AUTOSCAN_EXPONENTIAL=y
>  # For periodic module:
> -#CONFIG_AUTOSCAN_PERIODIC=y
> +CONFIG_AUTOSCAN_PERIODIC=y
>  
>  # Password (and passphrase, etc.) backend for external storage
>  # These optional mechanisms can be used to add support for storing passwords
> @@ -600,7 +600,7 @@ CONFIG_IBSS_RSN=y
>  # operations for roaming within an ESS (same SSID). See the bgscan parameter in
>  # the wpa_supplicant.conf file for more details.
>  # Periodic background scans based on signal strength
> -#CONFIG_BGSCAN_SIMPLE=y
> +CONFIG_BGSCAN_SIMPLE=y
>  # Learn channels used by the network and try to avoid bgscans on other
>  # channels (experimental)
>  #CONFIG_BGSCAN_LEARN=y
> diff --git a/package/network/services/hostapd/Makefile b/package/network/services/hostapd/Makefile
> index 8f94dce782..8c264854d7 100644
> --- a/package/network/services/hostapd/Makefile
> +++ b/package/network/services/hostapd/Makefile
> @@ -7,7 +7,7 @@
>  include $(TOPDIR)/rules.mk
>  
>  PKG_NAME:=hostapd
> -PKG_RELEASE:=5
> +PKG_RELEASE:=6
>  
>  PKG_SOURCE_URL:=http://w1.fi/hostap.git
>  PKG_SOURCE_PROTO:=git
> 


-- 
Mit freundlichen Grüßen
André Valentin

Systemadministration - Projektkoordination


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